ADJUSTABLE WAIST SUPPORT CUSHION

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

The application claims priority to Chinese patent application No. 202423001621X, filed on Dec. 5, 2024, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to the field of cushions, and in particular, to an adjustable waist support cushion.

BACKGROUND

A cushion is a pad that makes people more comfortable when sitting. With the update and iteration of the cushion, cushion products with backrests and support are gradually emerging. Due to having the support function, the cushion has also derived a certain degree of sitting posture correction function through a structure such as a curved surface.

Currently, the cushion on the market is used to relieve the user's back or correct the user's sitting posture by providing a back cushion. However, the position of the back cushion cannot be adjusted, and there is still a certain inconvenience in use.

Therefore, it is necessary to provide a waist support cushion capable of adjusting the back cushion.

SUMMARY

To achieve the above object, the present disclosure provides the following technical solutions:

An adjustable waist support cushion, including a cushion portion 1 and a backrest base plate 2 connected to the cushion portion 1; further including a Floating Backrest 3 and an adjustment mechanism 4, where the Floating Backrest 3 includes a linkage bracket 32 and a back cushion 31 connected to the linkage bracket 32; the adjustment mechanism 4 is connected to the backrest base plate 2 and the linkage bracket 32, and includes an adjustment member 41 that is rotatably connected to the backrest base plate 2 or rotatably connected to the linkage bracket 32, and the Floating Backrest 3 is capable of being driven to move by rotating the adjustment member 41.

Further, the adjustment mechanism 4 further includes a drive gear set 42 that is connected to the adjustment member 41 and located on a side close to the backrest base plate 2; and a transmission gear set 43 that is connected to the linkage bracket 32 or the backrest base plate 2 and is in transmission cooperation with the drive gear set 42.

Further, the drive gear set 42 includes at least one arc-shaped tooth 420 that is spirally distributed on an end surface of the adjustment member 41 and forms an adjustment opening 44; and the transmission gear set 43 is connected to the linkage bracket 32 and includes a plurality of sub-tooth members 430 distributed in an array, and the arc-shaped tooth 420 is capable of being driven to engage with different sub-tooth members 430 by rotating the adjustment member 41.

Further, first self-locking surfaces 431 are arranged on the sub-tooth members 430 and located at one of ends of the sub-tooth members 430 distributed in a moving direction, second self-locking surfaces 421 are separately arranged on the at least one arc-shaped tooth 420, located on a side of the arc-shaped tooth 420 close to the outside, and cooperates with the first self-locking surfaces 431, allowing a relative position between the linkage bracket 32 and the backrest base plate 2 to be maintained; and/or first guide surfaces 432 are arranged on the sub-tooth members 430 and located at the other ends of the sub-tooth members 430 distributed in the moving direction, and second guide surfaces 422 cooperating with the first guide surfaces 432 are arranged on the at least one arc-shaped tooth 420.

Further, a height position of the Floating Backrest 3 relative to the cushion portion 1 is adjusted by the adjustment mechanism 4; and an included angle between the first self-locking surfaces 431 and the linkage bracket 32 or the backrest base plate 2 is not greater than 90 degrees, and an included angle between the first guide surfaces 432 and the linkage bracket 32 or the backrest base plate 2 is greater than 90 degrees, such that the sub-tooth members 430 are arranged to incline downward.

Further, a mounting hole 21 is provided on the backrest base plate 2, and the mounting hole 21 is provided obliquely in the moving direction of the Floating Backrest 3; and the adjustment member 41 is connected to the mounting hole 21 and includes an operation portion 412 and an adjustment portion 411, which are located at both ends of the mounting hole 21, respectively, and the drive gear set 42 is arranged on the adjustment portion 411.

Further, the adjustable waist support cushion further includes an inclined sleeve pad 5; where the inclined sleeve pad 5 includes a main pad portion 51 that has a thickness gradually increasing in an inclined direction of the mounting hole 21 and is located between the adjustment portion 411 and the backrest base plate 2, and/or a socket portion 52 that is connected to a hole wall of the mounting hole 21.

Further, the adjustment mechanism 4 further includes a transmission rack; where the transmission rack includes a movable platform that is connected to the linkage bracket 32, and a link member, both ends of which are connected to the backrest base plate 2 and the movable platform, respectively; the drive gear set 42 is in transmission connection with the link member, to drive the movable platform to move in a specific direction.

Further, the linkage bracket 32 is slidably connected to the backrest base plate 2, and a sliding direction of the linkage bracket 32 is consistent with the moving direction at which the linkage bracket 32 is driven by the adjustment member 41; first guide sliding portions 23 are arranged on the backrest base plate 2, and second guide sliding portions 322 are separately arranged on both sides of the linkage bracket 32 to cooperate with the first guide sliding portions 23; and/or a third guide sliding portion 22 is arranged on the backrest base plate 2, and a fourth guide sliding portion 321 cooperating with the third guide sliding portion 22 is arranged in a middle of the linkage bracket 32.

Further, an anti-falling portion 24 is arranged on at least one of the first guide sliding portions 23 and the third guide sliding portion 22; and the anti-falling portion 24 is distributed in a sliding direction and is suitable for limiting the linkage bracket 32 from detaching from the backrest base plate 2 in a sliding process.

According to the adjustable waist support cushion provided by the present disclosure, the Floating Backrest can be driven to move in a predetermined direction by providing the Floating Backrest and rotating the adjustment member of the adjustment mechanism, which simplifies the adjustment operation, thereby effectively improving the efficiency of personalized adjustment.

BRIEF DESCRIPTION OF DRAWINGS

To better clarify the embodiment of the present disclosure or the technical solution in the prior art, the drawings required to illustrate the embodiments or the prior art will be simply described below. It is apparent that the drawings described below are merely some embodiments in the present disclosure. Those ordinarily skilled in the art can obtain other drawings according to these drawings without contributing creative labor on the basis of those drawings.

FIG. 1 is a schematic structural diagram of an adjustable waist support cushion disclosed in Embodiment I of the present disclosure.

FIG. 2 is a schematic structural diagram of a structure in FIG. 1 from another perspective.

FIG. 3 is a cross-sectional schematic structural diagram of a structure in FIG. 1.

FIG. 4 is a schematic diagram of a partial enlarged cross-sectional structure of portion A in FIG. 3.

FIG. 5 is an exploded schematic structural diagram of a structure in FIG. 1.

FIG. 6 is an exploded schematic structural diagram of a structure in FIG. 2.

FIG. 7 is a schematic structural diagram of an adjustment member.

FIG. 8 is a schematic structural diagram of a linkage bracket.

FIG. 9 is a schematic structural diagram of an inclined sleeve pad.

DESCRIPTION OF REFERENCE NUMERALS

• • 1. Cushion portion;
  • 2. Backrest base plate; 21. Mounting hole; 22. Third guide sliding portion; 23. First guide sliding portion; 24. Anti-falling portion;
  • 3. Floating Backrest; 31. Back cushion; 32. Linkage bracket; 321, Fourth guide sliding portion; 322. Second guide sliding portion;
  • 4. Adjustment mechanism; 41. Adjustment member; 42. Drive gear set; 43. Transmission gear set; 44. Adjustment opening; 411. Adjustment portion; 412. Operation portion; 420. Arc-shaped tooth; 421. Second self-locking surface;
  • 422. Second guide surface; 430. Sub-tooth member; 431. First self-locking surface; 432. First guide surface;
  • 5. Inclined sleeve pad; 51. Main pad portion; 52. Socket portion.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In order to make the objectives, technical solution and advantages of the present disclosure clearer, the technical solution of the present disclosure will be described clearly and completely in detail below in conjunction with embodiments and drawings. It is to be noted that the embodiments described with reference to the drawings are exemplary, which is intended to explain the present disclosure, instead of being understood as a limitation to the present disclosure.

For example, the terms “first” and “second” are merely used for description, instead of being understood as indicating or implying relative importance or impliedly indicating the quantity of the showed technical features. Thus, the features defined with “first” and “second” may expressly or impliedly one or more features; and “a plurality of” means at least two, for example two, three and the like, unless specific limitation otherwise.

For example, terms “mount”, “join”, “connect”, “fix” and the like should be generally understood, for example, may be a fixed connection, a detachable connection, or integrated, may be a mechanical connection or an electric connection, may be a direct connection or an indirect connection through an intermediation, and may an internal connection of two elements or an interactive relationship of two elements, unless clearly specified otherwise.

For example, orientation or position relationships indicated by the terms “center”, “longitudinal”, “transverse”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, “clockwise”, “anticlockwise”, “axial”, “radial”, “circumferential” and the like are based on the orientation or position relationships as shown in the drawings, for ease of describing the technical solution of the present disclosure only, rather than indicating or implying that the mentioned apparatus or element necessarily has a particular orientation and must be constructed and operated in the particular orientation. For example, the first feature “on” or “below” the second feature may be that the first feature is in direct contact with the second feature, or the first feature is in indirect contact with the second feature through an intermediation; the first feature “above”, “top” and “on” the second feature may be that the first feature is right above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is greater than the second feature; and the first feature “below”, “bottom” and “underneath” the second feature may be that the first feature is right below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than the second feature.

Embodiment I

As shown in FIGS. 1 to 9, which is a preferred embodiment of an adjustable waist support cushion provided by the present disclosure, including a cushion portion 1 suitable for supporting the buttocks of a human body, and a backrest base plate 2 connected to the cushion portion 1; further including a Floating Backrest 3 and an adjustment mechanism 4. The Floating Backrest 3 includes a linkage bracket 32 and a back cushion 31 connected to the linkage bracket 32. The adjustment mechanism 4 is connected the backrest base plate 2 and the linkage bracket 32, and includes an adjustment member 41 that is rotatably connected to the backrest base plate 2 or rotatably connected to the linkage bracket 32, and the Floating Backrest 3 is capable of being driven to move in a predetermined direction by rotating the adjustment member 41, which can be vertical lifting or horizontal translation. In this embodiment, the example that the Floating Backrest 3 is driven to lift in a vertical direction by rotating the adjustment member 41 is used for explanation.

Specifically, the cushion portion 1 includes a base plate, and preferably further includes a soft cushion arranged on the base plate, and a curved surface fitting the body curve is arranged on a surface of the soft cushion.

The backrest base plate 2 is connected to a rear end of the cushion and is arranged at an angle to the cushion portion 1, and the angle is preferably 90 degrees.

Preferably, the Floating Backrest 3 is provided with a plurality of back cushions 31, which are arranged in sequence and connected to the linkage bracket 32, connected to the backrest base plate 2 through the linkage bracket 32, and located on one side facing away from the backrest base plate 2, such that the plurality of back cushions 31 are suspended on the backrest base plate 2.

Further, the plurality of back cushions 31 are arranged horizontally on the linkage bracket 32. By adjusting a height position of the linkage bracket 32, the plurality of back cushions 31 are adjusted in linkage without adjusting the positions of the back cushions 31 one by one, which can adjust the positions of the back cushions 31 quickly, simplify the adjustment operation, improve the operation efficiency, and optimize the user experience of the product.

The adjustment mechanism 4 includes the above-mentioned adjustment member 41 and a transmission assembly. Through the transmission assembly, the force for rotating the adjustment member 41 is converted into a thrust enabling the Floating Backrest 3 to move in different directions such as a vertical direction or a horizontal direction.

The transmission assembly includes a drive gear set 42 that is connected to the adjustment member 41 and located on a side close to the backrest base plate 2, and a transmission gear set 43 that is connected to the linkage bracket 32 or the backrest base plate 2 and is in transmission cooperation with the drive gear set 42. In this embodiment, the transmission gear set 43 is connected to the linkage bracket 32.

The drive gear set 42 includes at least one arc-shaped tooth 420 that is spirally distributed on an end surface of the adjustment member 41 and forms an adjustment opening 44. The drive gear set 42 can be a section of continuous arc-shaped tooth 420 that spirals into a helical shape, or can be multiple sections of unconnected arc-shaped tooth 420 that are distributed along a helical trajectory. As the adjustment member 41 rotates, the adjustment opening 44 takes in and releases the sub-tooth members 430 of the transmission gear set 43, allowing the arc-shaped teeth 420 to engage with different sub-tooth members 430.

The transmission gear set 43 is connected to the linkage bracket 32 and includes a plurality of sub-tooth members 430 distributed in an array. The arc-shaped tooth 420 can be driven to engage with different sub-tooth members 430 by rotating the adjustment member 41, specifically by rotating the adjustment member 41, the adjustment opening 44 sequentially takes in and releases adjacent sub-tooth members 430, thereby driving the linkage bracket 32 to move in an array distribution direction of the sub-tooth members 430. For example, in this embodiment, the sub-tooth members 430 are distributed on the linkage bracket 32 in a vertical direction. The adjustment member 41 is screwed, and the sub-tooth members 430 are driven by the drive gear to drive the linkage bracket 32 to move in the vertical direction, thereby achieving the lifting adjustment of the Floating Backrest 3.

Further, first self-locking surfaces 431 and second self-locking surfaces 421 are arranged on the sub-tooth members 430 and the arc-shaped tooth 420, respectively. The first self-locking surfaces 431 are arranged on the sub-tooth members 430 and located at one of ends of the sub-tooth members 430 distributed in the moving direction. The second self-locking surfaces 421 are separately arranged on the at least one arc-shaped tooth 420, located on a side of the arc-shaped tooth 420 close to the outside, and cooperates with the first self-locking surfaces 431, allowing a relative position between the linkage bracket 32 and the backrest base plate 2 to be maintained; and/or first guide surfaces 432 are arranged on the sub-tooth members 430 and located at the other ends of the sub-tooth members 430 distributed in the moving direction. Second guide surfaces 422 are arranged on the at least one arc-shaped tooth 420, cooperate with the first guide surfaces 432, and are suitable for improving the smoothness when screwing the adjustment member 41.

In this embodiment, a height position of the Floating Backrest 3 relative to the cushion portion 1 is adjusted by the adjustment mechanism 4. The first self-locking surfaces 431 are arranged at the lower ends of the sub-tooth members 430, and the first guide surfaces 432 are located at the upper ends of the sub-tooth members 430 and distributed in the opposite direction to the first self-locking surfaces 431, such that the arc-shaped tooth 420 and the sub-tooth members 430 are engaged while further having the function of clamping and limiting, and the Floating Backrest 3 is locked at a certain height position.

Under the action of its own gravity, the Floating Backrest 3 causes the sub-tooth members 430 on the linkage bracket 32 to have a downward force on the arc-shaped tooth 420, and the first self-locking surfaces 431 located at the lower ends of the sub-tooth members 430 cooperate with the second self-locking surfaces 421 located outside the arc-shaped tooth 420 to form a clamping and limiting cooperation, thereby achieving self-locking after the height position is adjusted.

The second guide surfaces 422 are located on the side of the arc-shaped tooth 420 close to the inside, that is, on the side close to the spiral center, and are arranged in the opposite direction to the second self-locking surfaces 421.

Preferably, an included angle between the first self-locking surfaces 431 and the linkage bracket 32 or the backrest base plate 2 is not greater than 90 degrees, and an included angle between the first guide surfaces 432 and the linkage bracket 32 or the backrest base plate 2 is greater than 90 degrees, such that the sub-tooth members 430 are arranged to incline downward.

Further, a mounting hole 21 is provided on the backrest base plate 2, and the mounting hole 21 is provided obliquely in the moving direction of the Floating Backrest 3. Preferably, the inclination direction of the mounting hole 21 intersects with the inclination directions of the sub-tooth members 430. For example, in this embodiment, the sub-tooth members 430 are arranged to incline downward, and the inclination direction of the mounting hole 21 is inclined upward.

The adjustment member 41 is connected to the mounting hole 21 and includes an operation portion 412 and an adjustment portion 411, which are located at both ends of the mounting hole 21, respectively. The drive gear set 42 is arranged on the adjustment portion 411 and located at one end facing away from the operation portion 412.

By the inclined mounting hole 21, the spirally distributed arc-shaped tooth 420 is also inclined. No matter which direction the arc-shaped tooth 420 is rotated, the arc-shaped tooth 420 located on the lower side can be separated from the sub-tooth members 430, to release the engagement, reduce mechanical friction or interference, and improve the smoothness of the mechanism operation. At the same time, the arc-shaped tooth 420 located above can always maintain the engagement with the sub-tooth members 430, drive the linkage bracket 32 to move, and perform self-locking and limiting after the adjustment is completed, thus ensuring the stability of the adjustment process and the results after adjustment, and improving the product usage experience.

Further, the adjustable waist support cushion further includes an inclined sleeve pad 5, which is suitable for filling a gap between the adjustment portion 411 and the backrest base plate 2, thus avoiding the poor experience caused by the shaking of the adjustment member 41 and improving the product texture.

The inclined sleeve pad 5 includes a main pad portion 51 that has a thickness gradually increasing in an inclined direction of the mounting hole 21 and is located between the adjustment portion 411 and the backrest base plate 2, and/or a socket portion 52 that is connected to a hole wall of the mounting hole 21 and located between the adjustment member 41 and the mounting hole 21. In this embodiment, a hole cavity of the mounting hole 21 is arranged to incline upward, and a thickness of the main pad portion 51 gradually increases from bottom to top along the vertical direction.

Further, the linkage bracket 32 is slidably connected to the backrest base plate 2, and a sliding direction of the linkage bracket 32 is consistent with a direction in which the linkage bracket 32 is driven by the adjustment member 41, that is, parallel or coincident. First guide sliding portions 23 are arranged on the backrest base plate 2, second guide sliding portions 322 are arranged on both sides of the linkage bracket 32 to cooperate with the first guide sliding portions 23; and/or a third guide sliding portion 22 is arranged on the backrest base plate 2, and a fourth guide sliding portion 321 cooperating with the third guide sliding portion 22 is arranged in a middle of the linkage bracket 32.

By slidably connecting the linkage bracket 32 to the backrest base plate 2, the lifting adjustment of the Floating Backrest 3 is smoother and more stable.

In this embodiment, the first guide sliding portions 23 are arranged on both sides of the backrest base plate 2, respectively, which are chutes or sliding rails distributed in the vertical direction, so as to adjust the height position of the Floating Backrest 3. The second guide sliding portions 322 extend from both ends of the linkage bracket 32 to the backrest base plate 2, respectively, such that the shape of the linkage bracket 32 is generally n-shaped when viewed from above. The second guide sliding portions 322 are accommodated in the first guide sliding portions 23 and can slide in the first guide sliding portions 23. A third guide sliding portion 22 is arranged in the middle of the backrest base plate 2, and a fourth guide sliding portion 321 is arranged in the middle of the linkage bracket 32 and extends and protrudes toward the direction of the backrest base plate 2.

Further, an anti-falling portion 24 is arranged on at least one of the first guide sliding portions 23 and the third guide sliding portion 22. The anti-falling portion 24 is distributed in a sliding direction and is suitable for limiting the linkage bracket 32 from detaching from the backrest base plate 2 in a sliding process. In this embodiment, the first guide sliding portions 23 and the third guide sliding portion 22 are both provided with the anti-falling portion 24 to limit the second guide sliding portions 322 and the fourth guide sliding portion 321 in their respective chute, respectively, thereby preventing the linkage bracket 32 from detaching from the backrest base plate 2.

Further, the back cushion 31 is connected to the linkage bracket 32 through a connecting seat, and an elastic member and a mounting sleeve are arranged between the back cushion 31 and the connecting seat. The mounting sleeve is arranged outside the elastic member, with one purpose of increasing the dimension of the movable direction of the back cushion 31 such that the back cushion 31 can better fit the back curve of the human body and optimizing the comfort of use and product effect.

Further, a handle portion is arranged on the backrest substrate 2, which is suitable for holding the waist support cushion to provide convenience for moving or transporting. Preferably, the handle portion is a through hole provided on the top of the backrest base plate 2.

Embodiment II

As a variation of the above embodiment, the above-mentioned adjustment mechanism 4 further includes a transmission rack. The transmission rack includes a movable platform that is connected to the linkage bracket 32, and a link member, both ends of which are connected to the backrest base plate 2 and the movable platform, respectively; the drive gear set 42 is in transmission connection with the link member, to drive the movable platform to move in a specific direction.

For example, the link member is a screw rod, and the screw rod is fixedly mounted to the backrest base plate 2. The movable platform is threadedly connected to the screw rod. One end of the adjustment member 41 is a worm that is in transmission connection with the screw rod. The screw rod is driven to rotate by screwing the adjustment member 41, thereby enabling the movable platform to move in the vertical direction.

Further, the movable platform is slidably connected to the backrest base plate 2, thereby reducing the shaking of the Floating Backrest 3.

According to the adjustable waist support cushion provided by the present disclosure, the Floating Backrest can be driven to move in a predetermined direction by providing the Floating Backrest and rotating the adjustment member of the adjustment mechanism, which simplifies the adjustment operation, thereby effectively improving the efficiency of personalized adjustment.

The above embodiments are merely a part of embodiment of the present disclosure. A plurality of transformations, replacements and improvements made by those skilled in the art without departing from the concept of the present disclosure and without contributing creative labor fall within the scope of protection of the present disclosure.