OSCILLATING ASSEMBLY AND FAN

Description

FIELD

The present application relates to the field of household electrical appliances, and particularly relates to an oscillating assembly and a fan.

BACKGROUND

In related solutions, a left-right oscillating assembly of a left-right oscillating electric fan has a complicated design, an excessively large size and a high cost, which affect appearance and assembling efficiency.

Therefore, how to design an oscillating assembly with a simple structure, a low cost and a small size and a fan has become an urgent problem to be solved at present.

SUMMARY OF THE APPLICATION

The present application aims to at least solve the technical problems existing in the prior art or the related art that the left-right oscillating assembly of a fan has a complicated design, an excessively large size and a high cost, which affect appearance and assembling efficiency.

Thus, an object of the present application is to provide an oscillating assembly.

Therefore, another object of the present application is to provide a fan.

In order to achieve the above objects, the technical solution of the first aspect of the present application provides an oscillating assembly for a fan, the fan comprises a fan head and an upright tube, and the oscillating assembly is configured to drive the fan head to rotate. The oscillating assembly comprises: a driving assembly mounted in the upright tube and comprising an output shaft; a mounting seat mounted in the upright tube, the mounting seat being provided with a mounting hole; a shaft sleeve mounted in the mounting hole; a rotating shaft rotatably mounted in the mounting hole through the shaft sleeve, one end of the rotating shaft being connected to the output shaft, and the other end of the rotating shaft being configured to connect to the fan head.

The oscillating assembly provided by the present application is applied to a fan to drive the fan head of the fan to oscillate left and right. Wherein, the fan further comprises an upright tube to support and mount the fan head and to support and mount oscillating assemblies such as the driving assembly and the rotating shaft. The oscillating assembly comprises the driving assembly, the mounting seat, the shaft sleeve and the rotating shaft. The upright tube is configured to support the fan head, and the driving assembly is configured to provide a driving force to drive the fan head to oscillate left and right. The mounting seat is mounted in the upright tube and is configured to support and mount the rotating shaft. The rotating shaft is rotatably mounted in the mounting seat and can rotate relative to the mounting seat. The rotating shaft is further configured to connect to the fan head and the output shaft to realize the power transmission of the output shaft. The main function of the shaft sleeve is to support the rotating shaft, and ensure that the rotating shaft can rotate freely in the mounting seat without excessive deviation or vibration. At the same time, the arrangement of the shaft sleeve can further reduce the friction between the rotating shaft and the mounting seat. In addition, the shaft sleeve further helps keep the center position of the rotating shaft fixed, avoid unnecessary displacement of the rotating shaft during the rotating process, and ensure the accuracy and efficiency of transmission. That is, the shaft sleeve herein functions asa bearing. The solution realizes the rotatable mounting of the rotating shaft in the mounting seat through the shaft sleeve and can reduce product cost.

In addition, the oscillating assembly in the above technical solution provided by the application may further comprise the following additional technical features:

In some embodiments, the oscillating assembly further comprises a transmission assembly mounted in the upright tube and comprising a first transmission member and a second transmission member, the first transmission member being mounted on the output shaft, the second transmission member being mounted on the rotating shaft, and the first transmission member being drivingly connected to the second transmission member; wherein, the transmission ratio of the transmission assembly is greater than 1.

In this technical solution, a transmission assembly is arranged between the output shaft and the rotating shaft. A torque is transmitted through the transmission assembly. Wherein, the first transmission member is an input end and the second transmission member is an output end. With the solution, since the transmission assembly is provided and the transmission ratio of the transmission assembly is greater than 1, the rotating shaft can be driven to rotate with a relatively small torque. Thus, a low-torque driving assembly can be adopted to drive the entire rotating shaft to rotate, thereby reducing the cost of the driving assembly.

Exemplarily, the driving assembly may specifically be a motor assembly.

In some embodiments, the first transmission member is a first gear, and the second transmission member is a second gear. The number of teeth of the first gear is less than the number of teeth of the second gear, and the diameter of the reference circle of the first gear is smaller than that of the reference circle of the second gear.

In the technical solution, the first transmission member is the first gear, and the first gear is a pinion. The second transmission member is the second gear, and the second gear is a bull gear. With the solution, the pinion can drive the bull gear to form a labor-saving mechanism, and thus, a low-torque driving assembly can be adopted to drive the entire rotating shaft to rotate, thereby reducing the cost of the driving assembly. At the same time, gear transmission is relatively convenient, reliable and common, and this makes the cost of the transmission assembly low and the structure of the transmission assembly relatively simple.

In some embodiments, the rotating shaft and the second gear are of an integrated structure. This can improve the connection strength between the rotating shaft and the second gear.

In some embodiments, the first gear is an external gear, and the second gear is an internal gear adapted to the external gear.

In the technical solution, torque transmission between the output shaft and the rotating shaft is realized through the engagement of the internal gear and the external gear. Wherein, the transmission assembly composed of the internal gear and the external gear can make the structure of the transmission assembly more compact, and the load-bearing capacity and durability of the transmission assembly better.

In some embodiments, a preset distance is provided between the shaft sleeve and the second transmission member along an axial direction of the rotating shaft. Exemplarily, the shaft sleeve and the second transmission member are respectively arranged at opposite ends of the rotating shaft.

In the technical solution, the shaft sleeve and the second transmission member are spaced far apart, so that the rotating shaft is positioned and supported at two points through the shaft sleeve and the second transmission member, thereby ensuring the stability of the rotating shaft during rotation and preventing the rotating shaft from easily shaking, shifting, etc.

In some embodiments, the oscillating assembly further comprises a fixing plate mounted in the upright tube, and the driving assembly is mounted on the fixing plate. Furthermore, the fixing plate is provided with a limiting structure for limiting the first transmission member. The first transmission member is provided with a matching structure adapted to the limiting structure.

In the technical solution, the oscillating assembly further comprises the fixing plate. The fixing plate is configured to fixedly mount the driving assembly. Meanwhile, the limiting structure is provided on the fixing plate, and the first transmission member, for example, the first gear, can be limited through the limiting structure, thereby preventing the first transmission member (e.g., the first gear) from shifting, and thus accurately defining the position of the first transmission member (e.g., the first gear). For example, the matching structure adapted to the limiting structure can be provided on the first transmission member, so as to achieve axial and radial limiting to the first transmission member (e.g., the first gear) through the cooperation of the limiting structure and the matching structure.

Exemplarily, one of the limiting structure and the matching structure is a limiting protrusion, and the other one is a limiting groove. Limiting the first transmission member by the fixing plate can be realized through the cooperation of the limiting protrusion and the limiting groove. Wherein, the limiting protrusion can be triangular, arc-shaped, or etc.

In some embodiments, the rotating shaft is provided with a mounting groove, and the fixing plate comprises a fixing part located in the mounting groove. The fixing part is provided with a first mounting hole passing through the fixing part along the axial direction of the rotating shaft, and a bottom wall of the mounting groove is provided with a positioning protrusion. The fixing part is sleeved on and mounted to the positioning protrusion through the first mounting hole. The positioning protrusion is provided with a through hole, and the oscillating assembly further comprises a limiting member. One end of the limiting member passes through the through hole and is mounted on the rotating shaft, and a limiting part is arranged on the other end of the limiting member to limit the fixing part. An end of the fixing part distal from the bottom wall of the mounting groove is provided with a counterbore (or a countersink) communicating with the first mounting hole, and the limiting part is located within the counterbore (or the countersink) to limit the bottom wall of the counterbore (or the countersink).

In the technical solution, a mounting groove can be provided in the rotating shaft, and then the fixing part is mounted in the mounting groove, thereby achieving the initial positioning and mounting between the rotating shaft and the fixing plate. At the same time, secondary positioning and mounting can be conducted to the fixing part and the rotating shaft through the positioning protrusion and the first mounting hole, wherein, there is a clearance fit between the positioning protrusion and the first mounting hole, so that the positioning part can rotate in the first mounting hole. With the structure, through the positioning between the rotating shaft and the fixing part, the mounting position between the fixing plate and the rotating shaft can be more accurate, thereby ensuring the mounting accuracy of the position of the external gear.

Furthermore, a limiting member is further mounted on the rotating shaft, and the limiting member rotates along with the rotating shaft. A limiting part is arranged at the bottom of the limiting member, and the limiting part can limit the fixing part to prevent the separation between the fixing part and the positioning protrusion. In order to reduce the friction between the limiting member and the fixing part and then enable the limiting member to rotate smoothly, a clearance is arranged between the limiting part and the fixing part along an axial direction. With the solution, the fixing part can be limited by the limiting member, that is, the fixing part is supported from the bottom of the fixing part to prevent the fixing part from moving downward and then separating from the positioning protrusion, thereby ensuring that the relative position between the fixing plate and the rotating shaft remains unchanged.

In addition, to help the limiting part to limit the fixing part, a counterbore (or a countersink) arranged in a stepped manner with the first mounting hole can be provided in the fixing part. Thus, the limiting part can be mounted in the counterbore (or the countersink), and the limiting of the fixing part can be realized through the cooperation between the limiting part and the bottom of the counterbore (or the countersink).

Exemplarily, the limiting member is of an integrated structure. The limiting member comprises a connecting rod, external threads are provided on the connecting rod, and the connecting rod is in threaded connection with the rotating shaft.

Exemplarily, the limiting member is a threaded connecting member, for example, a bolt column. The limiting part is a cap nut, a nut or a washer mounted on the bolt column.

Furthermore, the second transmission member comprises an internal gear arranged on the rotating shaft, and the internal gear is disposed in the mounting groove. For example, internal teeth can be formed on the inner side wall of the mounting groove to form the internal gear.

In some embodiments, a lubricating medium is filled between the shaft sleeve and the rotating shaft. The lubricating medium can be lubricating oil. The arrangement of the lubricating medium such as the lubricating oil can further reduce the friction between the shaft sleeve and the rotating shaft, and ensure the more smooth rotation of the rotating shaft relative to the shaft sleeve.

In some embodiments, the shaft sleeve comprises a plastic shaft sleeve or a metal shaft sleeve.

In the technical solution, the smoothness and rigidity of the shaft sleeve needs to be considered. Therefore, the shaft sleeve can be made of plastic or metal materials as required.

Exemplarily, the shaft sleeve can be a POM shaft sleeve, because POM has better smoothness.

Wherein, POM is Polyoxymethylene or Polyformaldehyde, and is a high-performance thermoplastic engineering plastic.

In some embodiments, the shaft sleeve comprises an aluminum alloy shaft sleeve. Wherein, the shaft sleeve is made of aluminum alloy, which can reduce the cost while ensure machining accuracy.

In some embodiments, the rotating shaft is internally provided with a wire-through hole and a first wire outlet channel communicating with the wire-through hole; a second wire outlet channel communicating with the first wire outlet channel is provided in a mounting seat, and/or a wire clamping structure is arranged on the outer wall of the mounting seat. Furthermore, the wire-through hole and the first wire outlet channel are arranged to avoid the first transmission member.

In the technical solution, the power cord of the fan head of the fan can enter the wire-through hole from the upper end of the rotating shaft, then exit through the first wire outlet channel, and then extend to the outside of the mounting seat through the second wire outlet channel. The solution enables wiring through the interior of the rotating shaft, which can make the structure inside the upright tube more compact, thereby reducing the volume of the column of the fan. By arranging the wire clamping structure, the wires on the mounting seat can be guided, which can make the design of the upright tube more compact, and meanwhile prevent the wires from shaking left and right, which would affect the constant speed rotation of the fan head.

Furthermore, the second transmission member is arranged at the lower end of the rotating shaft, and the wire-through hole and the first wire outlet channel are arranged to avoid the first transmission member. That is, the wire-through hole and the first wire outlet channel are located on one side of the second transmission member and will not interfere with the second transmission member.

Exemplarily, the second transmission member is a second gear, and the second gear is an internal gear. The wires passing through the wire-through hole and the first wire outlet channel are located on the outer side of the second gear and routed from the upper side of the second gear, thus avoiding interference between the wires and the second transmission member.

In some embodiments, the end of the rotating shaft connected to the fan head is located outside the mounting hole. The oscillating assembly further comprises a connecting column mounted on the upright tube and connected to the part of the rotating shaft that is outside the mounting hole. Generally, the connecting column is a connecting pipe, and at least part of the rotating shaft is located inside the connecting pipe. The oscillating assembly further comprises a fan head bracket mounted on the connecting column and configured to support and mount the fan head. With the structure, the connection between the oscillating assembly and the fan head can be realized through the separately arranged connecting column and fan head bracket. The separate arrangement of the connecting column and the fan head bracket can simplify their respective structures, thereby facilitating processing. In other embodiments, the connecting column and the fan head bracket can further be of an integrated structure.

In the technical solution, the oscillating assembly further comprises a connecting column and a fan head bracket. The fan head can be better supported through the connecting column and the fan head bracket.

The technical solution of the second aspect of the application provides a fan, comprising: an upright tube; the oscillating assembly provided by the technical solution of the first aspect, wherein, the oscillating assembly is mounted in the upright tube; and a fan head connected to a rotating shaft.

The fan provided by the present application comprises the upright tube, the fan head and the oscillating assembly. The oscillating assembly is mounted in the upright tube, the fan head is connected to the oscillating assembly, and the oscillating assembly is configured to drive the fan head to oscillate left and right. Wherein, since the fan further comprises the oscillating assembly provided by the technical solution of the first aspect, the fan further has all the beneficial effects of the oscillating assembly provided by the technical solution of the first aspect, which will not be repeated herein.

The additional aspects and advantages of the present application will become apparent in the following description, or be learned through the practice of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or additional aspects and advantages of the present application will become apparent and easily understandable from the description of the embodiments in combination with the accompanying drawings, wherein,

FIG. 1 is a first schematic view of the structure of a fan according to the present application;

FIG. 2 is a first schematic view of the structure of an oscillating assembly according to the present application;

FIG. 3 is a second schematic view of the structure of an oscillating assembly according to the present application;

FIG. 4 is a third schematic view of the structure of an oscillating assembly according to the present application;

FIG. 5 is a schematic view of an assembling structure of a rotating shaft and a second transmission assembly of an oscillating assembly according to the present application; and

FIG. 6 is a fourth schematic view of the structure of an oscillating assembly according to the present application.

Wherein, the corresponding relationships between the reference signs and the component names in FIG. 1 to FIG. 6 are as follows:

• • 100 oscillating assembly, 1 upright tube, 2 driving assembly, 22 output shaft, 3 mounting seat, 30 mounting hole, 32 second wire outlet channel, 34 wire clamping structure, 4 shaft sleeve, 5 rotating shaft, 52 wire-through hole, 54 first wire outlet channel, 56 positioning protrusion, 562 through hole, 58 mounting groove, 59 limiting member, 592 limiting part, 6 transmission assembly, 62 first transmission member, 622 first gear, 64 second transmission member, 642 second gear, 7 fixing plate, 72 limiting structure, 74 fixing part, 742 counterbore (or countersink), 744 first mounting hole, 8 connecting column, 9 fan head bracket, 200 fan, 210 fan head, 220 chassis.

DETAILED DESCRIPTION OF THE DISCLOSURE

To more clearly understand the above aspects, features and advantages of the present application, the present application will be further detailed hereinafter in combination with the accompanying drawings and embodiments. It should be indicated that the embodiments and the features in the present application can be combined with each other in the case of no conflict.

Many details are illustrated in the following description for the convenience of a thorough understanding to the present application, but the present application can further be implemented using other embodiments other than these described herein. Therefore, the protection scope of the present application is not limited to the specific embodiments disclosed in the following text.

An oscillating assembly 100 and a fan 200 provided in the embodiments of the first aspect of the present application are described in the following text by referring to FIG. 1 to FIG. 6.

As shown in FIG. 1 to FIG. 3, the embodiment of the first aspect of the present application provides an oscillating assembly 100 for a fan 200, the fan 200 comprises a fan head 210, the oscillating assembly 100 is configured to drive the fan head 210 to rotate. The oscillating assembly 100 comprises: an upright tube 1; a driving assembly 2 mounted in the upright tube 1 and comprising an output shaft 22; a mounting seat 3 mounted in the upright tube 1, wherein a mounting hole 30 is arranged in the mounting seat 3; a shaft sleeve 4 mounted in the mounting hole 30; a rotating shaft 5 rotatably mounted in the mounting hole 30 through the shaft sleeve 4, wherein one end of the rotating shaft 5 is connected to the output shaft 22, and the other end of the rotating shaft 5 is configured to connect to the fan head 210.

The oscillating assembly 100 provided by the present application is applied to the fan 200 to drive the fan head 210 of the fan 200 to oscillate left and right. Wherein, the oscillating assembly 100 comprises an upright tube 1, a driving assembly 2, a mounting scat 3, a shaft sleeve 4 and a rotating shaft 5. The upright tube 1 is configured to support the fan head 210 and support and mount the parts such as the driving assembly 2 and the rotating shaft 5. The driving assembly 2 is configured to provide a driving force to drive the fan head 210 to oscillate left and right. The mounting seat 3 is mounted in the upright tube 1 and is configured to support and mount the rotating shaft 5. The rotating shaft 5 is rotatably mounted in the mounting seat 3 and can rotate relative to the mounting seat 3. The rotating shaft 5 is further configured to connect to the fan head 210 and the output shaft 22 to realize the power transmission of the output shaft 22. The main function of the shaft sleeve 4 is to support the rotating shaft 5, and ensure that the rotating shaft 5 can rotate freely in the mounting seat 3 without excessive deviation or vibration. At the same time, the arrangement of the shaft sleeve 4 can further reduce the friction between the rotating shaft 5 and the mounting seat 3. In addition, the shaft sleeve 4 further helps keep the center position of the rotating shaft 5 fixed, avoid unnecessary displacement of the rotating shaft 5 during the rotating process, and ensure the accuracy and efficiency of transmission. That is, the shaft sleeve 4 herein plays the role of a bearing. The solution realizes the rotatable mounting of the rotating shaft 5 in the mounting seat 3 through the shaft sleeve 4 and can reduce product cost.

In some embodiments, as shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4, the oscillating assembly 100 further comprises a transmission assembly 6 mounted in the upright tube 1 and comprising a first transmission member 62 and a second transmission member 64, the first transmission member 62 is mounted on the output shaft 22, the second transmission member 64 is mounted on the rotating shaft 5, and the first transmission member 62 is in driving connection with the second transmission member 64; wherein, the transmission ratio of the transmission assembly 6 is greater than 1.

In the embodiment, a transmission assembly 6 is arranged between the output shaft 22 and the rotating shaft 5. A torque is transmitted through the transmission assembly 6. Wherein, the first transmission member 62 is an input end and the second transmission member 64 is an output end. With the solution, since the transmission assembly 6 is provided and the transmission ratio of the transmission assembly 6 is greater than 1, the rotating shaft 5 can be driven to rotate with a relatively small torque. Thus, a low-torque driving assembly 2 can be adopted to drive the entire rotating shaft 5 to rotate, thereby reducing the cost of the driving assembly 2.

Exemplarily, the driving assembly 2 may specifically be a motor assembly.

In some embodiments, as shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4, the first transmission member 62 is a first gear 622, and the second transmission member 64 is a second gear 642. The number of teeth of the first gear 622 is less than the number of teeth of the second gear 642, and the diameter of the reference circle of the first gear 622 is smaller than that of the reference circle of the second gear 642.

In the embodiment, the first transmission member 62 is the first gear 622, and the first gear 622 is a pinion. The second transmission member 64 is the second gear 642, and the second gear 642 is a bull gear. With the solution, the pinion can drive the bull gear to form a labor-saving mechanism, and thus, a low-torque driving assembly 2 can be adopted to drive the entire rotating shaft 5 to rotate, thereby reducing the cost of the driving assembly 2. At the same time, gear transmission is relatively convenient, reliable and common, and this makes the cost of the transmission assembly 6 low and the structure of the transmission assembly 6 relatively simple.

In some embodiments, the rotating shaft 5 and the second gear 642 are of an integrated structure. This can improve the connection strength between the rotating shaft 5 and the second gear 642.

In some embodiments, as shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4, the first gear 622 is an external gear, and the second gear 642 is an internal gear adapted to the external gear.

In the embodiment, torque transmission between the output shaft 22 and the rotating shaft 5 is realized through the engagement of the internal gear and the external gear. Wherein, the transmission assembly 6 composed of the internal gear and the external gear can make the structure of the transmission assembly 6 more compact, and the load-bearing capacity and durability of the transmission assembly 6 better.

In some embodiments, as shown in FIG. 3, a preset distance H is provided between the shaft sleeve 4 and the second transmission member 64 along an axial direction of the rotating shaft 5. Exemplarily, the shaft sleeve 4 and the second transmission member 64 are respectively arranged at two ends of the rotating shaft 5.

In the embodiment, the shaft sleeve 4 and the second transmission member 64 are spaced far apart, so that the rotating shaft 5 is positioned and supported at two points through the shaft sleeve 4 and the second transmission member 64, thereby ensuring the stability of the rotating shaft 5 during rotation and preventing the rotating shaft 5 from easily shaking, shifting, etc.

In some embodiments, as shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4, the oscillating assembly 100 further comprises a fixing plate 7 mounted in the upright tube 1, and the driving assembly 2 is mounted on the fixing plate 7.

Furthermore, as shown in FIG. 2, the fixing plate 7 is provided with a limiting structure 72 for limiting the first transmission member 62. The first transmission member 62 is provided with a matching structure adapted to the limiting structure 72.

In the embodiment, the oscillating assembly 100 further comprises the fixing plate 7. The fixing plate 7 is configured to fixedly mount the driving assembly 2. Meanwhile, the limiting structure 72 is provided on the fixing plate 7, and the first transmission member 62, for example, the first gear 622, can be limited through the limiting structure 72, thereby preventing the first transmission member 62 (e.g., the first gear 622) from shifting, and thus accurately defining the position of the first transmission member 62 (e.g., the first gear). For example, the matching structure adapted to the limiting structure 72 can be provided on the first transmission member 62, so as to achieve axial and radial limiting to the first transmission member 62 (e.g., the first gear 622) through the cooperation of the limiting structure 72 and the matching structure.

Exemplarily, one of the limiting structure 72 and the matching structure is a limiting protrusion, and the other one is a limiting groove. Limiting the first transmission member 62 by the fixing plate 7 can be realized through the cooperation of the limiting protrusion and the limiting groove. Wherein, the limiting protrusion can be triangular, arc-shaped, or etc.

In some embodiments, as shown in FIG. 2, FIG. 3 and FIG. 4, a mounting groove 58 is provided in the rotating shaft 5, and the fixing plate 7 comprises a fixing part 74, and the fixing part 74 is located in the mounting groove 58. The fixing part 74 is provided with a first mounting hole 744 passing through the fixing part 74 along the axial direction of the rotating shaft 5, and a positioning protrusion 56 is provided on the bottom wall of the mounting groove 58. The fixing part 74 is sleeved on the positioning protrusion 56 through the first mounting hole 744. A through hole 562 is arranged in the positioning protrusion 56, and the oscillating assembly 100 further comprises a limiting member 59. One end of the limiting member 59 passes through the through hole 562 and is mounted on the rotating shaft 5, and a limiting part 592 is arranged on the other end of the limiting member 59 to limit the fixing part 74. A counterbore (or a countersink) 742 communicating with the first mounting hole 744 is arranged in an end of the fixing part 74 distal from the bottom wall of the mounting groove 58, and the limiting part 592 is located in the counterbore (or the countersink) 742 to limit the bottom wall of the counterbore (or the countersink) 742.

In the technical solution, the mounting groove 58 can be provided in the rotating shaft 5, and then the fixing part 74 is mounted in the mounting groove 58, thereby achieving the initial positioning and mounting between the rotating shaft 5 and the fixing plate 7. At the same time, secondary positioning and mounting can be conducted to the fixing part 74 and the rotating shaft 5 through the positioning protrusion 56 and the first mounting hole 744, wherein, there is a clearance fit between the positioning protrusion 56 and the first mounting hole 744, so that the positioning part can rotate in the first mounting hole 744. With the structure, through the positioning between the rotating shaft 5 and the fixing part 74, the mounting position between the fixing plate 7 and the rotating shaft 5 can be more accurate, thereby ensuring the mounting accuracy of the position of the external gear.

Furthermore, a limiting member 59 is further mounted on the rotating shaft 5, and the limiting member 59 rotates along with the rotating shaft 5. A limiting part 592 is arranged at the bottom of the limiting member 59, and the limiting part 592 can limit the fixing part 74 to prevent the separation between the fixing part 74 and the positioning protrusion 56. In order to reduce the friction between the limiting member 59 and the fixing part 74 and then enable the limiting member 59 to rotate smoothly, a clearance t is arranged between the limiting part 592 and the fixing part 74 along an axial direction. With the solution, the fixing part 74 can be limited by the limiting member 59, that is, the fixing part 74 is supported from the bottom of the fixing part 74 to prevent the fixing part 74 from moving downward and then separating from the positioning protrusion 56, thereby ensuring that the relative position between the fixing plate 7 and the rotating shaft 5 remains unchanged.

In addition, to help the limiting part 592 to limit the fixing part 74, a counterbore (or a countersink) 742 arranged in a stepped manner with the first mounting hole 744 can be provided in the fixing part 74. Thus, the limiting part 592 can be mounted in the counterbore (or the countersink) 742, and the limiting of the fixing part 74 can be realized through the cooperation between the limiting part 592 and the bottom of the counterbore (or the countersink) 742.

Exemplarily, the limiting member 59 is of an integrated structure. The limiting member 59 comprises a connecting rod, external threads are provided on the connecting rod, and the connecting rod is in threaded connection with the rotating shaft 5.

Exemplarily, the limiting member 59 is a threaded connecting member, for example, a bolt column. The limiting part 592 is a cap nut, a nut or a washer mounted on the bolt column.

Furthermore, the second transmission member comprises an internal gear arranged on the rotating shaft 5, and the internal gear is disposed in the mounting groove 58. For example, internal teeth can be formed on the inner side wall of the mounting groove 58 to form the internal gear.

In some embodiments, a lubricating medium is filled between the shaft sleeve 4 and the rotating shaft 5. The lubricating medium can be lubricating oil. The arrangement of the lubricating medium such as lubricating oil can further reduce the friction between the shaft sleeve 4 and the rotating shaft 5, and ensure the more smooth rotation of the rotating shaft 5 relative to the shaft sleeve 4.

In some embodiments, the shaft sleeve 4 comprises a plastic shaft sleeve or a metal shaft sleeve.

In the embodiment, the smoothness and rigidity of the shaft sleeve 4 needs to be considered. Therefore, the shaft sleeve 4 can be made of plastic or metal materials as required.

Exemplarily, the shaft sleeve 4 can be a POM shaft sleeve, because POM has better smoothness.

Wherein, POM is Polyoxymethylene or Polyformaldehyde, and is a high-performance thermoplastic engineering plastic.

In some embodiments, the shaft sleeve 4 comprises an aluminum alloy shaft sleeve. Wherein, the shaft sleeve 4 is made of aluminum alloy, which can reduce the cost while ensure machining accuracy.

In some embodiments, as shown in FIG. 2, FIG. 3, FIG. 5 and FIG. 6, the rotating shaft 5 is internally provided with a wire-through hole 52 and a first wire outlet channel 54 communicating with the wire-through hole 52; the mounting seat 3 is provided with a second wire outlet channel 32 in communication with the first wire outlet channel 54, and/or an outer wall of the mounting seat 3 is provided with a wire clamping structure 34. As shown in FIG. 3, furthermore, the wire-through hole 52 and the first wire outlet channel 54 are arranged to avoid the first transmission member 62.

In the embodiment, the power cord of the fan head 210 of the fan 200 can enter the wire-through hole 52 from the upper end of the rotating shaft 5, then exit through the first wire outlet channel 54, and then extend to the outside of the mounting seat 3 through the second wire outlet channel 32. The solution enables wiring through the interior of the rotating shaft 5, which can make the structure inside the upright tube 1 more compact, thereby reducing the volume of the column of the fan 200. Furthermore, the second transmission member 64 is arranged at the lower end of the rotating shaft 5, and the wire-through hole 52 and the first wire outlet channel 54 are arranged to avoid the first transmission member 62. That is, the wire-through hole 52 and the first wire outlet channel 54 are located on one side of the second transmission member 64 and will not interfere with the second transmission member 64. By arranging the wire clamping structure 34, the wires on the mounting seat 3 can be guided, which can make the design of the upright tube 1 more compact, and meanwhile prevent the wires from shaking left and right, which would affect the constant speed rotation of the fan head.

Wherein, the arrows in FIG. 3 indicate wiring paths.

Exemplarily, as shown in FIG. 3, the second transmission member 64 is a second gear 642, and the second gear 642 is an internal gear. The wires passing through the wire-through hole 52 and the first wire outlet channel 54 are located on the outer side of the second gear 642 and routed from the upper side of the second gear 642, thus avoiding interference between the wires and the second transmission member 64.

In some embodiments, as shown in FIG. 1, the end of the rotating shaft 5 connected to the fan head 210 is located outside the mounting hole 30. The oscillating assembly 100 further comprises a connecting column 8 mounted on the upright tube 1 and connected to the part of the rotating shaft 5 that is outside the mounting hole 30; the fan head bracket 9 is mounted on the connecting column 8 and configured to support and mount the fan head 210. In the embodiment, the oscillating assembly 100 further comprises a connecting column 8 and a fan head bracket 9. The fan head 210 can be better supported through the connecting column 8 and the fan head bracket 9. Generally, the connecting column 8 is a connecting pipe, and at least part of the rotating shaft 5 is located inside the connecting pipe. The oscillating assembly 100 further comprises the fan head bracket 9 mounted on the connecting column 8 and configured to support and mount the fan head 210. With the structure, the connection between the oscillating assembly 100 and the fan head 210 can be realized through the separately arranged connecting column 8 and fan head bracket 9. The separate arrangement of the connecting column 8 and the fan head bracket 9 can simplify their respective structures, thereby facilitating processing. In other embodiments, the connecting column 8 and the fan head bracket 9 can further be of an integrated structure.

As shown in FIG. 1 to FIG. 6, the embodiment of the second aspect of the application provides a fan 200, comprising: an upright tube 1; a fan head 210; and the oscillating assembly 100 provided by the embodiment of the first aspect, wherein, the oscillating assembly 100 is mounted in the upright tube 1; and the fan head 210 is connected to a rotating shaft 5.

The fan 200 provided by the present application comprises the upright tube 1, the fan head 210 and the oscillating assembly 100. The fan head 210 is connected to the oscillating assembly 100, and the oscillating assembly 100 is configured to drive the fan head 210 to oscillate left and right. Wherein, since the fan 200 further comprises the oscillating assembly 100 provided by the embodiment of the first aspect, the fan 200 further has all the beneficial effects of the oscillating assembly 100 provided by the embodiment of the first aspect, which will not be repeated herein.

In some embodiments, the fan 200 further comprises a chassis 220, and the upright tube 1 is mounted on the chassis 220.

The oscillating assembly 100 and the fan 200 in the present application are further described hereinafter in combination with a specific embodiment.

At present, a left-right oscillating control mechanism in the market has an excessive number of parts, leading to complex assembling and high costs. In the present embodiment, a low-cost solution is adopted in terms of material selection while the number of parts is reduced. Meanwhile, through structural optimization and process assembling optimization, automatic production is realized, and this further reduces production costs and improves production efficiency.

The present embodiment relates to a circulating fan with a left-right oscillating angle control mechanism. As shown in FIG. 1, the left-right oscillating mechanism is located in the upright tube 1 at the middle position of the fan 200. The mounting seat 3 is fastened in the upright tube 1 of the circulating fan, and a shaft sleeve 4 is built in the mounting seat 3, a rotating shaft (i.e., rotating shaft 5) is mounted into the mounting seat 3 from top to bottom, and at the same time, a wiring hole is built in the rotating shaft to facilitate wiring up and down (as shown in FIG. 2 and FIG. 5); the fixing plate 7 for fixing the motor is mounted in the mounting seat 3 from bottom to top, and the rotating shaft, the mounting seat 3 and the fixing plate 7 form an integrated structure through locking screws, and meanwhile the rotating shaft can rotate; the pinion is mounted on the stepping motor, and both of them are fastened together on the fixing plate 7 by screws.

The left-right oscillating control mechanism rotates via a stepping motor and transmits torque to the pinion, and the pinion transmits the torque to the rotating shaft through a specific speed ratio, which is similar to the principle of a force-saving lever, wherein a low torque drives the rotating shaft to rotate, and thus a low-torque stepping motor can be configured to drive the entire oscillating mechanism to rotate, thereby reducing the cost of the stepping motor. The rotating shaft rotates inside the mounting seat 3. The main function of the shaft sleeve 4 is to fix the rotating shaft inside the mounting seat 3 to prevent the rotating shaft from shaking, and the secondary function thereof is to allow the rotating shaft to rotate freely and smoothly. The shaft sleeve 4 together with lubricating oil can be configured to replace the bearing, thereby further reducing the cost of the oscillating mechanism.

As shown in FIG. 6, a wire clamping structure 34 is designed on the mounting seat 3, which makes the design of the upright tube 1 more compact, and meanwhile prevents the wires from shaking left and right, which would affect the constant speed rotation of the motion mechanism.

As shown in FIG. 2 and FIG. 3, a rotation hole is provided in the fixing plate 7, and the rotating shaft comprises a driven gear which is sleeved with the pinion. The center of the driven gear and the center of the shaft sleeve 4 are arranged coaxially to facilitate mounting and limiting. As shown in FIG. 2, a pinion limiting protrusion is formed on the fixing plate 7.

The combined solution can be applied to an electrical appliance with an oscillating function such as a heater fan. The shaft sleeve 4 can be replaced with a bearing, a plastic material, etc.

In the description of the present specification, the terms “connect”, “mount”, “fix” and the like should be understood in a broad sense, for example, the term “connect” can be a fixed connection, a detachable connection, or an integral connection, and can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skills in this art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

In the description of the present specification, the descriptions of the phrases “one embodiment”, “some embodiments” or “specific embodiments” and the like mean that the specific features, structures, materials or characteristics described in combination with the embodiment or example are comprised in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms may not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics as described can be combined in any one or more embodiments or examples in a suitable manner.

Described above are only some embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. shall be included within the scope of protection of this application.