WASHING ASSEMBLY AND WASHING DEVICE

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims priority from Chinese patent applications No. CN202211105453.1, No. CN202211105118.1 and No. CN202211105100.1, all of which were filed on Sep. 9, 2022 and entitled “WASHING ASSEMBLY AND WASHING DEVICE”, and the entire disclosures of which are incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to the field of washing and cleaning, and specifically provides a washing assembly and a washing apparatus.

TECHNICAL BACKGROUND

In order to improve washing efficiency and achieve separate washing of different clothing, a washing machine with “tub-in-tub” technology can be used, which means that in addition to the original mother tub in the washing machine, a small son tub is added inside the mother tub to wash different clothing. The appearance of the “tub-in-tub” washing machine can also achieve maximum water and electricity saving of the washing machine. However, this technology still has many defects.

In order to achieve complete isolation between the small tub and the inner tub, a hole-free design is adopted for the small tub. When the small tub is spinning, water is thrown out from a top edge of the small tub through high-speed rotation. If there is clothing in the large tub, this drainage mode will make the discharged water splash onto the clothing in the large tub, wetting or even contaminating the clothing in the large tub.

Accordingly, there is an urgent need in the relevant field for a washing assembly and a washing apparatus to solve the above technical problems.

SUMMARY

First solution: CN202211105453.1: the present disclosure aims to solve the above technical problem, that is, to solve the problem that the drainage mode of the small tub of the existing tub-in-tub washing apparatus will wet or even contaminate the clothing in the large tub.

In a first aspect, the present disclosure provides a washing assembly, which includes a large tub, a small tub, and a first pulsator, in which the first pulsator is arranged inside the large tub and located at the bottom of the large tub, and the small tub is located inside the large tub;

• • the small tub is arranged on the first pulsator, a drainage channel is provided on a side wall of the small tub in its length direction, and a water inlet of the drainage channel is located at the top of the wall of the small tub;
  • the bottom of the first pulsator is provided with a drainage hole, and the drainage channel is communicated with the drainage hole; and
  • when the small tub rotates, water inside the small tub flows into the drainage channel and is discharged to the bottom of the first pulsator through the drainage hole.

In a specific implementation of the washing assembly described above, the drainage hole is located below the drainage channel.

In a specific implementation of the washing assembly described above, a water stirring rib is provided on the first pulsator, and a drainage chamber is provided inside the water stirring rib; the drainage hole is provided on a bottom wall of the drainage chamber, and the drainage channel is communicated with the drainage chamber; the water in the drainage channel can flow through the drainage chamber to the drainage hole, and can be further discharged to the bottom of the first pulsator.

In a specific implementation of the washing assembly described above, the small tub is a conical cylinder, and an inner diameter of a top end of the small tub is larger than an inner diameter of a bottom end of the small tub.

In a specific implementation of the washing assembly described above, multiple drainage channels are arranged at intervals on the side wall of the small tub in a circumferential direction.

In a specific implementation of the washing assembly described above, two drainage channels are symmetrically arranged on the side wall of the small tub in a circumferential direction.

In a specific implementation of the washing assembly described above, an insertion socket is provided on the first pulsator, and the drainage channel is inserted into the insertion socket.

In a specific implementation of the washing assembly described above, the small tub is detachably snap-fitted with the first pulsator.

In a specific implementation of the washing assembly described above, the washing assembly further includes a second pulsator, which is arranged inside the small tub and located at the bottom of the small tub.

In a second aspect, the present disclosure provides a washing apparatus, which includes:

• • the washing assembly described above; and
  • a driving mechanism, which is arranged at the bottom of the washing assembly, and which is configured to drive the large tub, the first pulsator, and the second pulsator of the washing assembly to rotate.

In a case where the above technical solutions are adopted, a drainage channel is provided on a side wall of the small tub of the washing assembly of the present disclosure in its length direction, and a water inlet of the drainage channel is located at the top of the inner wall of the small tub; the bottom of the first pulsator is provided with a drainage hole, and the drainage channel is communicated with the drainage hole; when the small tub rotates, water inside the small tub flows into the drainage channel and is discharged to the bottom of the first pulsator through the drainage hole; during the drainage process, the water does not flow into the large tub, which ensures that the water discharged from the small tub does not splash onto the clothing inside the large tub, so that the clothing inside the large tub will not be wetted, and the large tub and the clothing inside it will not be contaminated.

Second solution: CN202211105118.1: the present disclosure aims to solve the above technical problem, that is, to solve the problem of inconvenient disassembly and assembly of the small tub in the existing tub-in-tub washing apparatus.

In a first aspect, the present disclosure provides a washing assembly, which includes a large tub, a small tub, a first pulsator, and a second pulsator, in which the small tub and the first pulsator are both arranged inside the large tub, the first pulsator is located at the bottom of the large tub, the second pulsator is arranged inside the small tub and located at the bottom of the small tub, and the small tub is detachably connected to the first pulsator.

In a specific implementation of the washing assembly described above, the small tub is snap-fitted with the first pulsator.

In a specific implementation of the washing assembly described above, the washing assembly further includes a snap-fit block that is slidably arranged at the bottom of the small tub, and a limiting groove is provided on the first pulsator;

• • the snap-fit block can at least partially extend into the limiting groove to limit and fix the small tub; and
  • the detachment of the snap-fit block from the limiting groove can release the limiting and fixing of the small tub.

In a specific implementation of the washing assembly described above, the washing assembly further includes an elastic member that can drive the snap-fit block to partially extend into the limiting groove.

In a specific implementation of the washing assembly described above, an installation groove is provided at the bottom of the small tub, and the snap-fit block is slidably arranged inside the installation groove; the elastic member is arranged inside the installation groove, and two ends of the elastic member respectively act on the small tub and the snap-fit block.

In a specific implementation of the washing assembly described above, the washing assembly further includes a driving block, which is provided with an upward facing first inclined surface, and the snap-fit block is provided with a downward facing second inclined surface, the first inclined surface and the second inclined surface being in abutment with each other; and

• • the driving block moves upward so that the first inclined surface and the second inclined surface can drive the snap-fit block to move in a direction away from the limiting groove and the snap-fit block can detach from the limiting groove.

In a specific implementation of the washing assembly described above, a receiving hole is provided on the side wall of the small tub, and the driving block is connected to a connecting rod; the connecting rod passes through the receiving hole and extends upward out of the small tub, and pulling the connecting rod upward can move the driving block upward to drive the snap-fit block to detach from the limiting groove.

In a specific implementation of the washing assembly described above, the top of the small tub is pivotally connected with a handle, and the top of the connecting rod is provided with a strip-shaped hole in a horizontal direction; the handle is provided with a connecting pin which passes through the strip-shaped hole, and pulling the handle upward can move the connecting rod upward.

In a specific implementation of the washing assembly described above, the washing assembly further includes:

• • a fixed block fixed on the first pulsator, the limiting groove being provided on the fixed block.

In a second aspect, the present disclosure provides a washing apparatus, which includes:

• • the washing assembly described above; and
  • a driving mechanism, which is arranged at the bottom of the washing assembly, and which is configured to drive the large tub, the first pulsator and the second pulsator to rotate.

In a case where the above technical solutions are adopted, the small tub of the present disclosure is detachably connected to the first pulsator. Specifically, the snap-fit block is moved to partially extend into the limiting groove to limit and fix the small tub and complete the installation of the small tub. The installation is simple and quick. The snap-fit block is moved to detach from the limiting groove, which can release the limiting and fixing of the small tub to disassemble the small tub. The disassembly is simple and quick. That is, the disassembly and assembly of the small tub of the present disclosure is relatively simple, quick, and efficient.

The present disclosure aims to solve the above technical problem, that is, to solve the problem that existing tub-in-tub washing apparatus cannot determine whether the small tub is installed in place.

In a first aspect, the present disclosure provides a washing assembly, which includes a large tub, a small tub, a first pulsator, and a second pulsator; both the small tub and the first pulsator are arranged inside the large tub, and the first pulsator is located at the bottom of the large tub; the small tub is arranged on the first pulsator, and the second pulsator is arranged inside the small tub and located at the bottom of the small tub;

• • one of the first pulsator and the bottom of the small tub is provided with a limiting groove, and the other is provided with a movable snap-fit block;
  • the second pulsator is provided with an observation window through which the position of the snap-fit block can be observed;
  • the snap-fit block can at least partially extend into the limiting groove to limit and fix the small tub, and the snap-fit block can be detached from the limiting groove to release the limiting and fixing of the small tub; and
  • whether the snap-fit block has extended into the limiting groove can be observed through the observation window, so as to judge whether the small tub is installed in place.

In a specific implementation of the washing assembly described above, the color of the snap-fit block is different from that of the first pulsator.

In a specific implementation of the washing assembly described above, the part of the snap-fit block that extends into the limiting groove is red, blue, or green.

In a specific implementation of the washing assembly described above, the washing assembly further includes a fixed block fixed on the first pulsator, the limiting groove and the observation window are both arranged on the fixed block, and the snap-fit block is movably arranged at the bottom of the small tub.

In a specific implementation of the washing assembly described above, the washing assembly further includes an elastic member, an installation groove is provided at the bottom of the small tub, and the snap-fit block is slidably arranged inside the installation groove; the elastic member is arranged inside the installation groove, two ends of the elastic member respectively act on the bottom of the installation groove and the snap-fit block, and the elastic member can drive the snap-fit block to partially extend into the limiting groove.

In a specific implementation of the washing assembly described above, the washing assembly further includes a driving block, which is provided with an upward facing first inclined surface, and the snap-fit block is provided with a downward facing second inclined surface, the first inclined surface and the second inclined surface being in abutment with each other; and

• • the driving block moves upward so that the first inclined surface and the second inclined surface can drive the snap-fit block to move in a direction away from the limiting groove and the snap-fit block can detach from the limiting groove.

In a specific implementation of the washing assembly described above, the driving block is connected to a connecting rod, which extends upward out of the small tub; a receiving chamber is provided on the side wall of the small tub, and the connecting rod is located inside the receiving chamber; and

• • pulling the connecting rod upward can move the driving block upward to drive the snap-fit block to detach from the limiting groove.

In a specific implementation of the washing assembly described above, the top of the small tub is pivotally connected with a handle, which is connected to the top of the connecting rod, and pulling the handle upward can move the connecting rod upward.

In a specific implementation of the washing assembly described above, the top of the connecting rod is provided with a strip-shaped hole in a horizontal direction, and the handle is provided with a connecting pin which passes through the strip-shaped hole.

In a second aspect, the present disclosure provides a washing apparatus, which includes:

• • the washing assembly described above; and
  • a driving mechanism, which is arranged at the bottom of the washing assembly, and which is configured to drive the large tub, the first pulsator and the second pulsator to rotate.

In a case where the above technical solutions are adopted, the snap-fit block of the present disclosure can at least partially extend into the limiting groove to limit and fix the small tub; and the detachment of the snap-fit block from the limiting groove can release the limiting and fixing of the small tub. Through the observation window, it is possible to observe whether the snap-fit block has extended into the limiting groove, so as to judge whether the small tub is installed in place. If the snap-fit block can be observed through the observation window, it indicates that the snap-fit block has extended into the limiting groove. At this time, the snap-fit block can limit and fix the small tub, indicating that the small tub is installed in place. If the snap-fit block cannot be observed through the observation window, it indicates that the snap-fit block has not extended into the limiting groove and cannot limit and fix the small tub, indicating that the small tub is not installed in place. The way to judge whether the small tub is installed in place through the observation window is simple. Moreover, the structure of the observation window is simple, which simplifies the structure of the washing assembly and reduces the cost.

Third solution: CN202211105100.1; the present disclosure aims to solve the above technical problem, that is, to solve the problem that existing tub-in-tub washing apparatus cannot determine whether the small tub is installed in place.

In a first aspect, the present disclosure provides a washing assembly, which includes a large tub, a small tub, a first pulsator, and a second pulsator; both the small tub and the first pulsator are arranged inside the large tub, and the first pulsator is located at the bottom of the large tub; the small tub is arranged on the first pulsator, and the second pulsator is arranged inside the small tub and located at the bottom of the small tub;

• • one of the first pulsator and the bottom of the small tub is provided with a limiting groove, and the other is provided with a movable snap-fit block;
  • the second pulsator is provided with an observation window through which the position of the snap-fit block can be observed;
  • the snap-fit block can at least partially extend into the limiting groove to limit and fix the small tub, and the snap-fit block can be detached from the limiting groove to release the limiting and fixing of the small tub; and
  • whether the snap-fit block has extended into the limiting groove can be observed through the observation window, so as to judge whether the small tub is installed in place.

In a specific implementation of the washing assembly described above, the color of the snap-fit block is different from that of the first pulsator.

In a specific implementation of the washing assembly described above, the part of the snap-fit block that extends into the limiting groove is red, blue, or green.

In a specific implementation of the washing assembly described above, the washing assembly further includes a fixed block fixed on the first pulsator, the limiting groove and the observation window are both arranged on the fixed block, and the snap-fit block is movably arranged at the bottom of the small tub.

In a specific implementation of the washing assembly described above, the washing assembly further includes an elastic member, an installation groove is provided at the bottom of the small tub, and the snap-fit block is slidably arranged inside the installation groove; the elastic member is arranged inside the installation groove, two ends of the elastic member respectively act on the bottom of the installation groove and the snap-fit block, and the elastic member can drive the snap-fit block to partially extend into the limiting groove.

In a specific implementation of the washing assembly described above, the washing assembly further includes a driving block, which is provided with an upward facing first inclined surface, and the snap-fit block is provided with a downward facing second inclined surface, the first inclined surface and the second inclined surface being in abutment with each other; and

• • the driving block moves upward so that the first inclined surface and the second inclined surface can drive the snap-fit block to move in a direction away from the limiting groove and the snap-fit block can detach from the limiting groove.

In a specific implementation of the washing assembly described above, the driving block is connected to a connecting rod, which extends upward out of the small tub; a receiving chamber is provided on the side wall of the small tub, and the connecting rod is located inside the receiving chamber; and

• • pulling the connecting rod upward can move the driving block upward to drive the snap-fit block to detach from the limiting groove.

In a specific implementation of the washing assembly described above, the top of the small tub is pivotally connected with a handle, which is connected to the top of the connecting rod, and pulling the handle upward can move the connecting rod upward.

In a specific implementation of the washing assembly described above, the top of the connecting rod is provided with a strip-shaped hole in a horizontal direction, and the handle is provided with a connecting pin which passes through the strip-shaped hole.

In a second aspect, the present disclosure provides a washing apparatus, which includes:

• • the washing assembly described above; and
  • a driving mechanism, which is arranged at the bottom of the washing assembly, and which is configured to drive the large tub, the first pulsator and the second pulsator to rotate.

In a case where the above technical solutions are adopted, the snap-fit block of the present disclosure can at least partially extend into the limiting groove to limit and fix the small tub; and the detachment of the snap-fit block from the limiting groove can release the limiting and fixing of the small tub. Through the observation window, it is possible to observe whether the snap-fit block has extended into the limiting groove, so as to judge whether the small tub is installed in place. If the snap-fit block can be observed through the observation window, it indicates that the snap-fit block has extended into the limiting groove. At this time, the snap-fit block can limit and fix the small tub, indicating that the small tub is installed in place. If the snap-fit block cannot be observed through the observation window, it indicates that the snap-fit block has not extended into the limiting groove and cannot limit and fix the small tub, indicating that the small tub is not installed in place. The way to judge whether the small tub is installed in place through the observation window is simple. Moreover, the structure of the observation window is simple, which simplifies the structure of the washing assembly and reduces the cost.

BRIEF DESCRIPTION OF DRAWINGS

Preferred embodiments of the present disclosure will be described below in connection with the accompanying drawings. In the drawings:

First solution: CN202211105453.1, FIGS. 1 to 4, first embodiment;

FIG. 1 is a simplified structural view of the washing apparatus provided by the present disclosure;

FIG. 2 is a schematic structural view of the washing assembly provided by the present disclosure;

FIG. 3 is a cross-sectional view of the washing assembly provided by the present disclosure; and

FIG. 4 is a schematic view of a partial structure of the first pulsator provided by the present disclosure.

Second solution: CN202211105118.1; third solution: CN202211105100.1; FIGS. 5 to 12, second and third embodiments;

FIG. 5 is a simplified structural view of the washing apparatus provided by the present disclosure;

FIG. 6 is a first cross-sectional view of the washing assembly provided by the present disclosure (with the snap-fit block partially extending into the limiting groove);

FIG. 7 is a partially enlarged view of part A in FIG. 6;

FIG. 8 is a second cross-sectional view of the washing assembly provided by the present disclosure (with the snap-fit block partially extending into the limiting groove);

FIG. 9 is a cross-sectional view of the washing assembly provided by the present disclosure (with the snap-fit block detached from the limiting groove);

FIG. 10 is a partially enlarged view of part B in FIG. 9;

FIG. 11 is a schematic structural view of the washing assembly provided by the present disclosure; and

FIG. 12 is a partially enlarged view of part C in FIG. 11.

List of reference signs: first solution: CN202211105453.1; first embodiment: 01: cabinet; 02: large tub; 021: first washing chamber; 03: small tub; 031: second washing chamber; 032: drainage channel; 04: first pulsator; 041: drainage hole; 042: protruding rib; 05: second pulsator; 06: driving mechanism; second solution: CN202211105118.1; third solution: CN202211105100.1; FIGS. 5 to 12, second and third embodiments: 01: cabinet; 02: large tub; 021: first washing chamber; 03: small tub; 031: second washing chamber; 032: drainage channel; 033: snap-fit block; 0331: receiving groove; 0332: connecting column; 0333: second inclined surface; 034: driving block; 0341: first inclined surface; 035: connecting rod; 0351: strip-shaped hole; 036: handle; 0361: connecting pin; 037: elastic member; 038: receiving hole; 04: first pulsator; 041: fixed block; 0411: limiting groove; 0412: observation window; 05: second pulsator; 06: driving mechanism.

DETAILED DESCRIPTION OF EMBODIMENTS

Preferred embodiments of the present disclosure will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principle of the present disclosure, and are not intended to limit the scope of protection of the present disclosure.

It should be noted that in the description of the present disclosure, terms indicating directional or positional relationships, such as “upper”, “lower”, “left”, “right”, “inner”, “outer” and the like, are based on the directional or positional relationships shown in the accompanying drawings. They are only used for ease of description, and do not indicate or imply that the device or element must have a specific orientation, or must be constructed or operated in a specific orientation; therefore, they should not be considered as limitations to the present disclosure. In addition, terms “first” and “second” are only used for descriptive purpose, and should not be understood as indicating or implying relative importance.

In addition, it should also be noted that in the description of the present disclosure, unless otherwise clearly specified and defined, terms “install”, “arrange” and “connect” should be understood in a broad sense; for example, the connection may be a fixed connection, or a detachable connection, or an integral connection; it may be a direct connection, or an indirect connection implemented through an intermediate medium, or internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be interpreted according to specific situations.

First Solution: CN202211105453.1, First Embodiment

The first solution aims to solve the problem that the existing drainage mode of small tub can wet or even contaminate the clothing in the large tub.

As shown in FIGS. 1-4, this embodiment discloses a washing apparatus, specifically a pulsator washing machine, which is mainly used for washing the clothing and which can also be used for washing shoes, etc.

Specifically, referring to FIGS. 1-3, the washing apparatus includes a cabinet 01, a driving mechanism 06, and a washing assembly. The washing assembly includes a large tub 02, a small tub 03, a first pulsator 04, and a second pulsator 05.

The large tub 02 is rotatably arranged inside the cabinet 01, and the first pulsator 04 is arranged inside the large tub 02 and located at the bottom of the large tub 02. The first pulsator 04 is coaxially arranged with the large tub 02. The first pulsator 04 can rotate independently, and it can be ensured that the small tub 03 and the large tub 02 rotate simultaneously and in opposite directions to effectively wash the clothing inside the large tub 02.

The small tub 03 is arranged inside the large tub 02, and is coaxially arranged with the first pulsator 04 and the large tub 02. The small tub 03 is installed on the first pulsator 04, and the first pulsator 04 can be configured to drive the small tub 03 to rotate synchronously. Specifically, the small tub 03 and the first pulsator 04 are detachably connected through snap-fit; in this embodiment, the small tub 03 and the first pulsator 04 are connected in a quickly detachable way. When it is only required to use the large tub 02 for washing the clothing and it is not required to use the small tub 03 for washing the clothing, the small tub 03 can be quickly detached; and when it is required to use the small tub 03 for washing the clothing, it can be quickly installed on the first pulsator 04.

The second pulsator 05 is arranged inside the small tub 03 and located at the bottom of the small tub 03. The second pulsator 05 is coaxially arranged with the small tub 03. The second pulsator 05 can rotate independently, and it can be ensured that the second pulsator 05 and the small tub 03 rotate simultaneously and in opposite directions to effectively wash the clothing inside the small tub 03. Specifically, the first pulsator 04 is a large pulsator, and the second pulsator 05 is a small pulsator. The rotation of the first pulsator 04 enables the clothing inside the large tub 02 to be washed, and the rotation of the second pulsator 05 enables the clothing inside the small tub 03 to be washed.

The large tub 02, the first pulsator 04, and the second pulsator 05 are specifically driven by the driving mechanism 06 to rotate. The driving mechanism 06 is arranged inside the cabinet 01, and located at the bottom of the first pulsator 04. The large tub 02, the first pulsator 04 and the second pulsator 05 are all connected to the driving mechanism 06 for transmission. The driving mechanism 06 includes a driving motor and a clutch arranged at an output end of the driving motor. The large tub 02, the first pulsator 04 and the second pulsator 05 are respectively connected to different output ends of the clutch, so that the driving motor can simultaneously or separately drive the large tub 02, the first pulsator 04 and the second pulsator 05 to rotate, that is, it can control the rotation of the large tub 02, the first pulsator 04 and the second pulsator 05 simultaneously, or control the rotation of one, two or three of them separately. Specifically, the clutch is provided with a first output shaft, a second output shaft, and a third output shaft; the second output shaft is sleeved on the first output shaft and can rotate relative to the first output shaft; the third output shaft is sleeved on the second output shaft and can rotate relative to the second output shaft. The first output shaft is fixedly connected to the second pulsator 05, so that the driving mechanism 06 can drive the second pulsator 05 to rotate through the first output shaft; the second output shaft is fixedly connected to the first pulsator 04, so that the driving mechanism 06 can drive the first pulsator 04 to rotate through the second output shaft; and the third output shaft is fixedly connected to the large tub 02, so that the driving mechanism 06 can drive the large tub 02 to rotate through the third output shaft.

The space between the large tub 02 and the small tub 03 is a first washing chamber 021, and the space inside the small tub 03 is a second washing chamber 031.

Since the large tub 02, the first pulsator 04 and the second pulsator 05 can rotate in different directions and whether they should rotate or not can also be controlled separately, the first washing chamber 021 and the second washing chamber 031 can be used simultaneously or separately. When there is little clothing, it is possible to only use the second washing chamber 031 for washing; when there is slightly more clothing, it is possible to only use the first washing chamber 021 for washing; and when there is much clothing, the first washing chamber 021 and the second washing chamber 031 can be used simultaneously for washing. Of course, the first washing chamber 021 and the second washing chamber 031 can also be used for washing different types of clothing. For example, the first washing chamber 021 is used for washing normal outerwear, while the second washing chamber 031 is used for washing underwear; alternatively, the first washing chamber 021 is used for washing normal clothing, while the second washing chamber 031 is used for washing socks, etc.

With continued reference to FIGS. 2 and 3, the arrows in FIG. 2 indicate a water flow path inside the small tub 03. Drainage channels 032 are provided on a side wall of the small tub 03 in a length direction thereof, and water inlets of the drainage channels 032 are located at the top of the wall of the small tub 03. Drainage holes 041 are provided at the bottom of the first pulsator 04, and the drainage channels 032 are communicated with the drainage holes 041. When the small tub 03 rotates, the water in the small tub 03 flows into the drainage channels 032 under the action of centrifugal force, and is further discharged to the bottom of the first pulsator 04 through the drainage holes 041 before being discharged through a drainage pipe below the cabinet 01, as specifically indicated by the arrows in FIG. 2. During the drainage process, the water does not flow into the large tub 02, which can ensure that the water discharged from the small tub 03 does not splash onto the clothing in the large tub 02, so that the clothing in the large tub 02 will not be wetted, and the large tub 02 and the clothing in the large tub 02 will not be contaminated.

The small tub 03 is a conical cylinder, and an inner diameter of a top end of the small tub 03 is larger than an inner diameter of a bottom end of the small tub 03. The design of the conical shape of the tub enables the water inside the small tub 03 to be thrown to the top of the small tub 03 at a lower rotational speed of the small tub 03, thereby entering the drainage channels 032; this can ensure that the clothing inside the small tub 03 are not easily thrown out.

Specifically, in this embodiment, the drainage channel 032 protrudes both inward and outward on the side wall of the small tub 03. The drainage channel 032 is vertically arranged and is an equal-diameter pipeline, so that more and more parts protrude outward from top to bottom, and the uppermost part almost does not protrude outward; more and more parts protrude inward from bottom to top, the top part almost entirely protrudes inward, and the bottom part almost does not protrude inward. The drainage channel 032 and the small tub 03 are integrally formed, which can ensure the structural strength of the drainage channel 032 and the small tub 03. In other embodiments, the drainage channel 032 may also protrude inward only on the inner wall of the small tub 03, or protrude outward only on the outer wall of the small tub 03.

The drainage holes 041 are located below the drainage channels 032, specifically directly below the drainage channels 032; of course, the drainage holes 041 can also be located sideward below the drainage channels 032. The drainage hole 041, which has a larger diameter, is arranged directly below the drainage channel 032, so that the water in the drainage channel 032 can be quickly discharged below the first pulsator 04, and then be discharged through the drainage pipe below the cabinet 01. In other embodiments, it is also possible to arrange multiple drainage holes 041 with a smaller diameter below the drainage channel 032. This arrangement has a slightly slower drainage speed, but can effectively ensure the structural strength of the first pulsator 04.

The first pulsator 04 is provided with insertion sockets, and the drainage channels 032 are inserted into the insertion sockets. Specifically, as shown in FIGS. 3 and 4, protruding ribs 042 are arranged around the drainage hole 041 of the first pulsator 04, and the protruding ribs 042 enclose to form the insertion socket. A part of the drainage channel 032 that is located on the inner side of the small tub 03 is provided with a groove at the bottom. After the small tub 03 is installed, a part of the protruding rib 042 that is located on the outer side of the small tub 03 is exposed, and a part of the protruding rib 042 that is located on the inner side of the small tub 03 is embedded in the above-mentioned groove.

Regarding the arrangement of the drainage hole 041, it should be noted that the arrangement of the drainage hole 041 below the drainage channel 032 is not a limitation to the present disclosure. Without departing from the principles of the present disclosure, those skilled in the art can also adopt other arrangements in other embodiments, as long as the drainage hole 041 can be communicated with the drainage channel 032 and drain the water in the drainage channel 032 to the bottom of the first pulsator 04. For example, the first pulsator 04 is provided with water stirring ribs, and drainage chambers are provided inside the water stirring ribs which are horizontally arranged. The drainage hole 041 is arranged on a bottom wall of the drainage chamber, and a communication port is provided on the outer side wall of the small tub 03 to communicate the drainage channel 032 with the drainage chamber. The water in the drainage channels 032 can flow into the drainage chambers, further flow through the drainage chambers to the drainage holes 041, and be discharged below the first pulsator 04 through the drainage holes 041 before being discharged through the drainage pipe below the cabinet 01. All of these do not deviate from the basic principles of the present disclosure and therefore fall within the scope of protection of the present disclosure.

There are two drainage channels 032 symmetrically arranged on the side wall of the small tub 03 in a circumferential direction, which can ensure the rapid discharge of water inside the small tub 03 without the need for providing more drainage channels 032, making the overall structure simpler and also reducing production difficulty and cost.

Regarding the number of the drainage channels 032, it should be noted that the number of two is not a limitation to the present disclosure. Without departing from the principles of the present disclosure, there can be more drainage channels. Specifically, multiple drainage channels 032 are spaced apart on the side wall of the small tub 03 in the circumferential direction. Specifically, the number can be three, four, or five, etc. All of these do not deviate from the basic principles of the present disclosure and therefore fall within the scope of protection of the present disclosure.

Second Solution: CN202211105118.1, Second Embodiment

The second solution aims to solve the problem of inconvenient disassembly and assembly of the small tub in the existing tub-in-tub washing apparatus.

As shown in FIGS. 5-12, this embodiment discloses a washing apparatus, specifically a pulsator washing machine, which is mainly used for washing the clothing and which can also be used for washing shoes, etc.

The washing apparatus includes a cabinet 01, a driving mechanism 06, and a washing assembly. The washing assembly includes a large tub 02, a small tub 03, a first pulsator 04, a second pulsator 05, a snap-fit block 033, a driving block 034, an elastic member 037, and a fixed block 041.

As shown in FIG. 5, the large tub 02 is rotatably arranged inside the cabinet 01, and the first pulsator 04 is arranged inside the large tub 02 and located at the bottom of the large tub 02. The first pulsator 04 is coaxially arranged with the large tub 02. The first pulsator 04 can rotate independently, and it can be ensured that the small tub 03 and the large tub 02 rotate simultaneously and in opposite directions to effectively wash the clothing inside the large tub 02.

The small tub 03 is arranged inside the large tub 02, and is coaxially arranged with the first pulsator 04 and the large tub 02. The small tub 03 is installed on the first pulsator 04, and the first pulsator 04 can be configured to drive the small tub 03 to rotate synchronously. Drainage channels 032 are provided on a side wall of the small tub 03 in a length direction thereof, and drainage holes corresponding to the drainage channels 032 are provided on the first pulsator 04, which are located directly below the drainage channels 032. The number of the drainage channels 032 is two, which are symmetrically arranged on the small tub 03. The small tub 03 is a conical cylinder, and an inner diameter of a top end of the small tub 03 is larger than an inner diameter of a bottom end of the small tub 03. The rotation of the small tub 03 enables the water inside the small tub 03 to move to the top, then flow downward along the drainage channels 032, and finally flow below the first pulsator 04 through the drainage holes. The water inside the small tub 03 does not come into contact with the inner wall of the large tub 02 or the clothing inside the large tub 02.

As shown in FIGS. 6-10, the small tub 03 and the first pulsator 04 are specifically detachably connected through snap-fit; in this embodiment, the small tub 03 and the first pulsator 04 are connected in a quickly detachable way. When it is only required to use the large tub 02 for washing the clothing and it is not required to use the small tub 03 for washing the clothing, the small tub 03 can be quickly detached; and when it is required to use the small tub 03 for washing the clothing, it can be quickly installed on the first pulsator 04.

Specifically, the snap-fit block 033 is slidably arranged at the bottom of the small tub 03, and a limiting groove 0411 is arranged on the first pulsator 04. The snap-fit block 033 can at least partially extend into the limiting groove 0411 to limit and fix the small tub 03. When the snap-fit block 033 detaches from the limiting groove 0411, the limiting and fixing of the small tub 03 can be released to disassemble the small tub 03 from the first pulsator 04. Specifically, the snap-fit block 033 is moved to partially extend into the limiting groove 0411 so that the small tub 03 is limited and fixed, thus completing the installation of the small tub 03. The installation is simple and quick. The snap-fit block 033 is moved to detach from the limiting groove 0411, which can release the limiting and fixing of the small tub 03 to disassemble the small tub 03. The disassembly is simple and quick. That is, the disassembly and assembly of the small tub 03 of the present disclosure is relatively simple, quick, and efficient.

More specifically, the end of the snap-fit block 033 can extend into the limiting groove 0411 to limit and fix the small tub 03. The bottom of the small tub 03 is provided with an installation groove, and the snap-fit block 033 is slidably arranged in the installation groove. The installation groove is oriented toward the outside of the small tub 03, and an extension line of the length direction of the installation groove can extend to a central axis of the small tub 03. The elastic member 037 is arranged in the installation groove, and two ends of the elastic member 037 respectively act on the bottom of the installation groove and the snap-fit block 033. The elastic member 037 can drive the snap-fit block 033 to partially extend into the limiting groove 0411. The elastic member 037 is specifically a compression spring. A connecting column 0332 is provided at the end of the snap-fit block 033, and the spring is sleeved on the connecting column 0332. The connecting column 0332 limits the spring to ensure its stability, thereby ensuring that the spring can effectively drive the snap-fit block 033 to slide and partially extend into the limiting groove 0411. Under the action of the elastic member 037, the end of the snap-fit block 033 that is away from the elastic member 037 can always extend into the limiting groove 0411. In other embodiments, the elastic member 037 can also be a rubber spring or an air spring, as long as it can drive the end of the snap-fit block 033 to extend into the limiting groove 0411.

A receiving groove 0331 is provided on the snap-fit block 033, and is arranged in the middle of the snap-fit block 033. The driving block 034 is arranged inside the receiving groove 0331. The driving block 034 is provided with an upward facing first inclined surface 0341, and the snap-fit block 033 is provided with a downward facing second inclined surface 0333. The second inclined surface 0333 is located at one end close to the elastic member 037, that is, at the end away from the limiting groove 0411. The first inclined surface 0341 and the second inclined surface 0333 abut against each other. The driving block 034 moves upward, so that the first inclined surface 0341 moves upward while sliding relative to the second inclined surface 0333, which will drive the snap-fit block 033 to move in a direction away from the limiting groove 0411, making the snap-fit block 033 detach from the limiting groove 0411.

A receiving hole 038 is provided on the side wall of the small tub 03, and the driving block 034 is connected to a connecting rod 035. The connecting rod 035 passes through the receiving hole 038 and extends upward out of the small tub 03. Pulling the connecting rod 035 upward can move the driving block 034 upward to drive the snap-fit block 033 to detach from the limiting groove 0411. After the connecting rod 035 is pressed down, the snap-fit block 033 is no longer limited. Under the action of the elastic member 037, the snap-fit block 033 can be driven to move toward the limiting groove 0411, so that the snap-fit block 033 partially extends into the limiting groove 0411.

Preferably, in this embodiment, the small tub 03 and the first pulsator 04 are snap-fitted at two connection positions, which are symmetrically arranged. That is, each of the numbers of snap-fit blocks 033, elastic members 037 and fixed blocks 041 is two. In other embodiments, those skilled in the art can also select multiple connection positions as required by the connection, which are arranged at intervals in the circumferential direction of the small tub 03.

Referring to FIGS. 9-12, the washing assembly further includes a handle 036, which is pivotally connected to the top of the small tub 03. The handle 036 is connected to the top of the connecting rod 035, and pulling the handle 036 upward can move the connecting rod 035 upward. Specifically, the handle 036 is provided with connecting pins 0361, which are located above the pivotal connection positions between the small tub 03 and the handle 036. When the handle 036 is pulled upward, the connecting pins 0361 can move in a circular arc. The top of the connecting rod 035 is provided with a strip-shaped hole 0351 in the horizontal direction, and the connecting pin 0361 passes through the strip-shaped hole 0351. When the handle 036 is pulled upward, the connecting pin 0361 moves in a circular arc, and moves horizontally relative to the strip-shaped hole 0351, which can drive the connecting rod 035 to move vertically upward, thereby driving the driving block 034 to move upward and driving the snap-fit block 033 to detach from the limiting groove 0411. The arrangement of the strip-shaped hole 0351 can ensure that the connecting rod 035 always moves in the vertical direction without tilting, and can guarantee the stability of the connection between the connecting rod 035 and the driving block 034 without damaging the connection position between the connecting rod 035 and the driving block 034.

Referring to FIGS. 6-10, the fixed block 041 is fixed on the first pulsator 04, and the two are specifically fixed by screws. The limiting groove 0411 is arranged on the fixed block 041. For ease of installation, the bottom of the end of the snap-fit block 033 that is close to the fixed block 041 is an inclined surface, and the edge of the upper part of the fixed block 041 is also chamfered, so that the snap-fit block 033 can be better compressed for installation.

An observation window 0412 is provided on the fixed block 041 for observing the interior of the limiting groove 0411. Through the observation window 0412, it is possible to observe whether the snap-fit block 033 has extended into the limiting groove 0411, so as to judge whether the small tub 03 is installed in place. Specifically, if the snap-fit block 033 can be observed through the observation window 0412, then it indicates that the snap-fit block 033 has extended into the limiting groove 0411. At this time, the snap-fit block 033 can limit and fix the small tub 03, indicating that the small tub 03 is installed in place. If the snap-fit block 033 cannot be observed through the observation window 0412, then it indicates that the snap-fit block 033 has not extended into the limiting groove 0411, and it cannot limit and fix the small tub 03, indicating that the small tub 03 is not installed in place. The way of judging whether the small tub 03 is installed in place through the observation window 0412 is simple, and the structure of the observation window 0412 is simple, which simplifies the structure of the washing assembly and reduces the cost.

For the convenience of observation and judgment, the color of the snap-fit block 033 is different from that of the fixed block 041. The first pulsator 04 and the fixed block 041 are generally in light colors such as white or gray. At least the end of the snap-fit block 033 that can extend into the limiting groove 0411 is red, blue, or green; preferably, the snap-fit block 033 is red in entirety. The bright color makes it easy to observe whether the end of the snap-fit block 033 has extended into the limiting groove 0411.

With continued reference to FIG. 5, the second pulsator 05 is arranged inside the small tub 03 and located at the bottom of the small tub 03. The second pulsator 05 is coaxially arranged with the small tub 03. The second pulsator 05 can rotate independently, and it can be ensured that the second pulsator 05 and the small tub 03 rotate simultaneously and in opposite directions to effectively wash the clothing inside the small tub 03. Specifically, the first pulsator 04 is a large pulsator, and the second pulsator 05 is a small pulsator. The rotation of the first pulsator 04 enables the clothing inside the large tub 02 to be washed, and the rotation of the second pulsator 05 enables the clothing inside the small tub 03 to be washed.

The large tub 02, the first pulsator 04, and the second pulsator 05 are specifically driven by the driving mechanism 06 to rotate. The driving mechanism 06 is arranged inside the cabinet 01, and located at the bottom of the first pulsator 04. The large tub 02, the first pulsator 04 and the second pulsator 05 are all connected to the driving mechanism 06 for transmission. The driving mechanism 06 includes a driving motor and a clutch arranged at an output end of the driving motor. The large tub 02, the first pulsator 04 and the second pulsator 05 are respectively connected to different output ends of the clutch, so that the driving motor can simultaneously or separately drive the large tub 02, the first pulsator 04 and the second pulsator 05 to rotate, that is, it can control the rotation of the large tub 02, the first pulsator 04 and the second pulsator 05 simultaneously, or control the rotation of one, two or three of them separately. Specifically, the clutch is provided with a first output shaft, a second output shaft, and a third output shaft; the second output shaft is sleeved on the first output shaft and can rotate relative to the first output shaft; the third output shaft is sleeved on the second output shaft and can rotate relative to the second output shaft. The second pulsator 05 is sleeved on the first output shaft, and a sleeving hole of the second pulsator 05 is a square hole; a top end of the first output shaft is a square shaft, and the driving mechanism 06 can drive the second pulsator 05 to rotate through the first output shaft; the second output shaft is fixedly connected to the first pulsator 04, so that the driving mechanism 06 can drive the first pulsator 04 to rotate through the second output shaft; and the third output shaft is fixedly connected to the large tub 02, so that the driving mechanism 06 can drive the large tub 02 to rotate through the third output shaft.

The small tub 03 is a bottomed tub, and the second pulsator 05 is located inside the small tub 03 and is rotatably connected to the small tub 03 through a bearing. When disassembling the small tub 03, the second pulsator 05 is pulled out from the first output shaft to complete the disassembly of the second pulsator 05.

The space between the large tub 02 and the small tub 03 is a first washing chamber 021, and the space inside the small tub 03 is a second washing chamber 031.

Since the large tub 02, the first pulsator 04 and the second pulsator 05 can rotate in different directions and whether they should rotate or not can also be controlled separately, the first washing chamber 021 and the second washing chamber 031 can be used simultaneously or separately. When there is little clothing, it is possible to only use the second washing chamber 031 for washing; when there is slightly more clothing, it is possible to only use the first washing chamber 021 for washing; and when there is much clothing, the first washing chamber 021 and the second washing chamber 031 can be used simultaneously for washing. Of course, the first washing chamber 021 and the second washing chamber 031 can also be used for washing different types of clothing. For example, the first washing chamber 021 is used for washing normal outerwear, while the second washing chamber 031 is used for washing underwear; alternatively, the first washing chamber 021 is used for washing normal clothing, while the second washing chamber 031 is used for washing socks, etc.

Third Solution: CN202211105100.1, Third Embodiment

The third solution aims to solve the problem that existing tub-in-tub washing apparatus cannot determine whether the small tub is installed in place.

As shown in FIGS. 5-12, this embodiment discloses a washing apparatus, specifically a pulsator washing machine, which is mainly used for washing the clothing and which can also be used for washing shoes, etc.

The washing apparatus includes a cabinet 01, a driving mechanism 06, and a washing assembly. The washing assembly includes a large tub 02, a small tub 03, a first pulsator 04, a second pulsator 05, a snap-fit block 033, a driving block 034, an elastic member 037, and a fixed block 041.

As shown in FIG. 5, the large tub 02 is rotatably arranged inside the cabinet 01, and the first pulsator 04 is arranged inside the large tub 02 and located at the bottom of the large tub 02. The first pulsator 04 is coaxially arranged with the large tub 02. The first pulsator 04 can rotate independently, and it can be ensured that the small tub 03 and the large tub 02 rotate simultaneously and in opposite directions to effectively wash the clothing inside the large tub 02.

The small tub 03 is arranged inside the large tub 02, and is coaxially arranged with the first pulsator 04 and the large tub 02. The small tub 03 is installed on the first pulsator 04, and the first pulsator 04 can be configured to drive the small tub 03 to rotate synchronously. Drainage channels 032 are provided on a side wall of the small tub 03 in a length direction thereof, and drainage holes corresponding to the drainage channels 032 are provided on the first pulsator 04, which are located directly below the drainage channels 032. The number of the drainage channels 032 is two, which are symmetrically arranged on the small tub 03. The small tub 03 is a conical cylinder, and an inner diameter of a top end of the small tub 03 is larger than an inner diameter of a bottom end of the small tub 03. The rotation of the small tub 03 enables the water inside the small tub 03 to move to the top, then flow downward along the drainage channels 032, and finally flow below the first pulsator 04 through the drainage holes. The water inside the small tub 03 does not come into contact with the inner wall of the large tub 02 or the clothing inside the large tub 02.

As shown in FIGS. 6-10, the small tub 03 and the first pulsator 04 are specifically detachably connected through snap-fit; in this embodiment, the small tub 03 and the first pulsator 04 are connected in a quickly detachable way. When it is only required to use the large tub 02 for washing the clothing and it is not required to use the small tub 03 for washing the clothing, the small tub 03 can be quickly detached; and when it is required to use the small tub 03 for washing the clothing, it can be quickly installed on the first pulsator 04.

Specifically, one of the first pulsator 04 and the bottom of the small tub 03 is provided with a limiting groove 0411, and the other is provided with a movable snap-fit block 033. The second pulsator 05 is provided with an observation window 0412 through which the position of the snap-fit block 033 can be observed. The snap-fit block 033 can at least partially extend into the limiting groove 0411 to limit and fix the small tub 03, and the snap-fit block 033 can be detached from the limiting groove 0411 to release the limiting and fixing of the small tub 03. Through the observation window 0412, it is possible to observe whether the snap-fit block 033 has extended into the limiting groove 0411, so as to judge whether the small tub 03 is installed in place.

Preferably, the snap-fit block 033 is movable arranged at the bottom of the small tub 03, and the limiting groove 0411 is arranged on the first pulsator 04. The snap-fit block 033 can at least partially extend into the limiting groove 0411 to limit and fix the small tub 03. When the snap-fit block 033 detaches from the limiting groove 0411, the limiting and fixing of the small tub 03 is released to disassemble the small tub 03 from the first pulsator 04. Specifically, the snap-fit block 033 is moved to partially extend into the limiting groove 0411 so that the small tub 03 is limited and fixed, thus completing the installation of the small tub 03. The installation is simple and quick. The snap-fit block 033 is moved to detach from the limiting groove 0411, which can release the limiting and fixing of the small tub 03 to disassemble the small tub 03. The disassembly is simple and quick. That is, the disassembly and assembly of the small tub 03 of the present disclosure is relatively simple, quick, and efficient.

More specifically, the end of the snap-fit block 033 can extend into the limiting groove 0411 to limit and fix the small tub 03. The bottom of the small tub 03 is provided with an installation groove, and the snap-fit block 033 is slidably arranged in the installation groove. The installation groove is oriented toward the outside of the small tub 03, and an extension line of the length direction of the installation groove can extend to a central axis of the small tub 03. The elastic member 037 is arranged in the installation groove, and two ends of the elastic member 037 respectively act on the bottom of the installation groove and the snap-fit block 033. The elastic member 037 can drive the snap-fit block 033 to partially extend into the limiting groove 0411. The elastic member 037 is specifically a compression spring. A connecting column 0332 is provided at the end of the snap-fit block 033, and the spring is sleeved on the connecting column 0332. The connecting column 0332 limits the spring to ensure its stability, thereby ensuring that the spring can effectively drive the snap-fit block 033 to slide and partially extend into the limiting groove 0411. Under the action of the elastic member 037, the end of the snap-fit block 033 that is away from the elastic member 037 can always extend into the limiting groove 0411. In other embodiments, the elastic member 037 can also be a rubber spring or an air spring, as long as it can drive the end of the snap-fit block 033 to extend into the limiting groove 0411.

A receiving groove 0331 is provided on the snap-fit block 033, and is arranged in the middle of the snap-fit block 033. The driving block 034 is arranged inside the receiving groove 0331. The driving block 034 is provided with an upward facing first inclined surface 0341, and the snap-fit block 033 is provided with a downward facing second inclined surface 0333. The second inclined surface 0333 is located at one end close to the elastic member 037, that is, at the end away from the limiting groove 0411. The first inclined surface 0341 and the second inclined surface 0333 abut against each other. The driving block 034 moves upward, so that the first inclined surface 0341 moves upward while sliding relative to the second inclined surface 0333, which will drive the snap-fit block 033 to move in a direction away from the limiting groove 0411, making the snap-fit block 033 detach from the limiting groove 0411.

A receiving hole 038 is provided on the side wall of the small tub 03, and the driving block 034 is connected to a connecting rod 035. The connecting rod 035 passes through the receiving hole 038 and extends upward out of the small tub 03. Pulling the connecting rod 035 upward can move the driving block 034 upward to drive the snap-fit block 033 to detach from the limiting groove 0411. After the connecting rod 035 is pressed down, the snap-fit block 033 is no longer limited. Under the action of the elastic member 037, the snap-fit block 033 can be driven to move toward the limiting groove 0411, so that the snap-fit block 033 partially extends into the limiting groove 0411.

Preferably, in this embodiment, the small tub 03 and the first pulsator 04 are snap-fitted at two connection positions, which are symmetrically arranged. That is, each of the numbers of snap-fit blocks 033, elastic members 037 and fixed blocks 041 is two. In other embodiments, those skilled in the art can also select multiple connection positions as required by the connection, which are arranged at intervals in the circumferential direction of the small tub 03.

Referring to FIGS. 9-12, the washing assembly further includes a handle 036, which is pivotally connected to the top of the small tub 03. The handle 036 is connected to the top of the connecting rod 035, and pulling the handle 036 upward can move the connecting rod 035 upward. Specifically, the handle 036 is provided with connecting pins 0361, which are located above the pivotal connection positions between the small tub 03 and the handle 036. When the handle 036 is pulled upward, the connecting pins 0361 can move in a circular arc. The top of the connecting rod 035 is provided with a strip-shaped hole 0351 in the horizontal direction, and the connecting pin 0361 passes through the strip-shaped hole 0351. When the handle 036 is pulled upward, the connecting pin 0361 moves in a circular arc, and moves horizontally relative to the strip-shaped hole 0351, which can drive the connecting rod 035 to move vertically upward, thereby driving the driving block 034 to move upward and driving the snap-fit block 033 to detach from the limiting groove 0411. The arrangement of the strip-shaped hole 0351 can ensure that the connecting rod 035 always moves in the vertical direction without tilting, and can guarantee the stability of the connection between the connecting rod 035 and the driving block 034 without damaging the connection position between the connecting rod 035 and the driving block 034.

Referring to FIGS. 6-10, the fixed block 041 is fixed on the first pulsator 04, and the two are specifically fixed by screws. The limiting groove 0411 is arranged on the fixed block 041. For ease of installation, the bottom of the end of the snap-fit block 033 that is close to the fixed block 041 is an inclined surface, and the edge of the upper part of the fixed block 041 is also chamfered, so that the snap-fit block 033 can be better compressed for installation.

The observation window 0412 is provided on the fixed block 041 for specifically observing the interior of the limiting groove 0411, i.e., observing whether the snap-fit block 033 has extended into the limiting groove 0411. Through the observation window 0412, it is possible to observe whether the snap-fit block 033 has extended into the limiting groove 0411, so as to judge whether the small tub 03 is installed in place. Specifically, if the snap-fit block 033 can be observed through the observation window 0412, then it indicates that the snap-fit block 033 has extended into the limiting groove 0411. At this time, the snap-fit block 033 can limit and fix the small tub 03, indicating that the small tub 03 is installed in place. If the snap-fit block 033 cannot be observed through the observation window 0412, then it indicates that the snap-fit block 033 has not extended into the limiting groove 0411, and it cannot limit and fix the small tub 03, indicating that the small tub 03 is not installed in place. The way of judging whether the small tub 03 is installed in place through the observation window 0412 is simple, and the structure of the observation window 0412 is simple, which simplifies the structure of the washing assembly and reduces the cost.

For the convenience of observation and judgment, the color of the snap-fit block 033 is different from that of the fixed block 041. The first pulsator 04 and the fixed block 041 are generally in light colors such as white or gray. At least the end of the snap-fit block 033 that can extend into the limiting groove 0411 is red, blue, or green; preferably, the snap-fit block 033 is red in entirety. The bright color makes it easy to observe whether the end of the snap-fit block 033 has extended into the limiting groove 0411.

With continued reference to FIG. 5, the second pulsator 05 is arranged inside the small tub 03 and located at the bottom of the small tub 03. The second pulsator 05 is coaxially arranged with the small tub 03. The second pulsator 05 can rotate independently, and it can be ensured that the second pulsator 05 and the small tub 03 rotate simultaneously and in opposite directions to effectively wash the clothing inside the small tub 03. Specifically, the first pulsator 04 is a large pulsator, and the second pulsator 05 is a small pulsator. The rotation of the first pulsator 04 enables the clothing inside the large tub 02 to be washed, and the rotation of the second pulsator 05 enables the clothing inside the small tub 03 to be washed.

The large tub 02, the first pulsator 04, and the second pulsator 05 are specifically driven by the driving mechanism 06 to rotate. The driving mechanism 06 is arranged inside the cabinet 01, and located at the bottom of the first pulsator 04. The large tub 02, the first pulsator 04 and the second pulsator 05 are all connected to the driving mechanism 06 for transmission. The driving mechanism 06 includes a driving motor and a clutch arranged at an output end of the driving motor. The large tub 02, the first pulsator 04 and the second pulsator 05 are respectively connected to different output ends of the clutch, so that the driving motor can simultaneously or separately drive the large tub 02, the first pulsator 04 and the second pulsator 05 to rotate, that is, it can control the rotation of the large tub 02, the first pulsator 04 and the second pulsator 05 simultaneously, or control the rotation of one, two or three of them separately. Specifically, the clutch is provided with a first output shaft, a second output shaft, and a third output shaft; the second output shaft is sleeved on the first output shaft and can rotate relative to the first output shaft; the third output shaft is sleeved on the second output shaft and can rotate relative to the second output shaft. The second pulsator 05 is sleeved on the first output shaft, and a sleeving hole of the second pulsator 05 is a square hole; a top end of the first output shaft is a square shaft, and the driving mechanism 06 can drive the second pulsator 05 to rotate through the first output shaft; the second output shaft is fixedly connected to the first pulsator 04, so that the driving mechanism 06 can drive the first pulsator 04 to rotate through the second output shaft; and the third output shaft is fixedly connected to the large tub 02, so that the driving mechanism 06 can drive the large tub 02 to rotate through the third output shaft.

The small tub 03 is a bottomed tub, and the second pulsator 05 is located inside the small tub 03 and is rotatably connected to the small tub 03 through a bearing. When disassembling the small tub 03, the second pulsator 05 is pulled out from the first output shaft to complete the disassembly of the second pulsator 05.

The space between the large tub 02 and the small tub 03 is a first washing chamber 021, and the space inside the small tub 03 is a second washing chamber 031.

Since the large tub 02, the first pulsator 04 and the second pulsator 05 can rotate in different directions and whether they should rotate or not can also be controlled separately, the first washing chamber 021 and the second washing chamber 031 can be used simultaneously or separately. When there is little clothing, it is possible to only use the second washing chamber 031 for washing; when there is slightly more clothing, it is possible to only use the first washing chamber 021 for washing; and when there is much clothing, the first washing chamber 021 and the second washing chamber 031 can be used simultaneously for washing. Of course, the first washing chamber 021 and the second washing chamber 031 can also be used for washing different types of clothing. For example, the first washing chamber 021 is used for washing normal outerwear, while the second washing chamber 031 is used for washing underwear; alternatively, the first washing chamber 021 is used for washing normal clothing, while the second washing chamber 031 is used for washing socks, etc.

Hitherto, the technical solutions of the present disclosure have been described in connection with the preferred embodiments shown in the accompanying drawings, but it is easily understood by those skilled in the art that the scope of protection of the present disclosure is obviously not limited to these specific embodiments. Without departing from the principles of the present disclosure, those skilled in the art can make equivalent changes or replacements to relevant technical features, and all the technical solutions after these changes or replacements will fall within the scope of protection of the present disclosure.