Cushion swinging device and chair

Abstract

The utility model provides a cushion swinging device and a chair, and belongs to the technical field of furniture articles, the cushion swinging device comprises: a support part for fixing with a cushion; the connecting part is used for being fixed with a chair frame; the first end of the connecting rod is connected with the connecting part, the second end of the connecting rod is connected with the supporting part, and the supporting part can swing relative to the connecting rod; the elastic piece is arranged between the supporting part and the connecting part; the seat cushion has the advantages that when a user sits on the seat cushion, each elastic component can be adaptively compressed and inclined according to the posture of the user, so that the distance and the relative inclination angle between the supporting part and the connecting part are changed, and the seat cushion can flexibly swing relative to the connecting part and adjust the inclination angle according to various postures of the user; the muscle load of a user is relieved, the caudal vertebra pressure is reduced, and the comfort of the user is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of furniture, and particularly relates to a cushion swing device and a chair. Background Art

[0002] The cushions of ordinary chairs on the market usually have a fixed angle, which cannot meet the needs of different human bodies and sitting postures. When a user sits on a chair, the cushion always remains in a position tending to be horizontal and cannot be finely adjusted according to the sitting posture of the human body. Sitting on the chair for a long time will cause local muscles or blood pressure to be compressed, resulting in phenomena such as coccyx pain, leg muscle spasm, and leg numbness. Therefore, there is an urgent need to design a flexible cushion and chair that can flexibly adjust the tilt angle of the cushion board. Summary of the Utility Model

[0003] The purpose of the present utility model is to address the above problems existing in the prior art and propose a cushion swing in which the cushion can be tilted and swung.

[0004] The purpose of the present utility model can be achieved by the following technical solutions: A cushion swing device includes:

[0005] A support part for fixing to the cushion;

[0006] A connection part for fixing to the chair frame;

[0007] A connecting rod, the first end of the connecting rod is connected to the connection part, the second end of the connecting rod is connected to the support part, and the support part can swing relative to the connecting rod;

[0008] An elastic member disposed between the support part and the connection part.

[0009] In the above cushion swing device, the elastic member includes an annular spring. The annular spring is sleeved outside the connecting rod. The annular spring includes multiple elastic parts stacked in sequence. Each elastic part includes a flat spring piece and a fluctuating spring piece, and the flat spring piece is fixed to the adjacent fluctuating spring piece.

[0010] In the above cushion swing device, a swing cavity is provided on the support part, and a swing notch is also provided on the support part and is communicated with the swing cavity. The first end of the connecting rod passes through the swing notch and extends into the swing cavity, and a swing gap is provided between the first end of the connecting rod and the inner wall of the swing notch.

[0011] In the above cushion swing device, an adjusting part is provided on the connecting rod, and the adjusting part is connected to the connection part, so that the linear distance between the support part and the connection part is adjustable.

[0012] In the above-mentioned cushion swing device, an operating part is fixedly arranged at the end of the second end of the connecting rod.

[0013] In the above-mentioned cushion swing device, a swing limiting part is arranged between the connecting part and the supporting part.

[0014] In the above-mentioned cushion swing device, the swing limiting part includes a limiting part arranged on one of the supporting part and the connecting part, a limiting cavity is arranged on the other of the two, the limiting part extends into the limiting cavity, and a limiting gap is arranged between the limiting part and the cavity wall of the limiting cavity.

[0015] In the above-mentioned cushion swing device, along the direction from the first end to the second end of the connecting rod, an outward inclination angle is arranged between the cavity wall of the limiting cavity and the central axis of the limiting cavity.

[0016] A chair includes the above-mentioned cushion swing device.

[0017] In the above-mentioned chair, a chair frame is further included. A connecting plate is fixedly arranged on the chair frame. The connecting part is fixed to the connecting plate, and along the direction of the rear legs of the chair frame towards the front legs, the connecting plate is arranged to incline upwards.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: When a user sits on the cushion, according to the user's posture, each elastic component can be adaptively compressed and inclined, so that the distance and relative inclination angle between the supporting part and the connecting part are changed, enabling the cushion to swing relative to the connecting part flexibly according to various postures of the user, adjusting the inclination angle, reducing the muscle load of the user, reducing the pressure on the coccyx, and improving the comfort of the user. Description of the Drawings

[0019] Figure 1 is a three-dimensional structural schematic diagram of the cushion swing device;

[0020] Figure 2 is Figure 1 the sectional structural schematic diagram of

[0021] Figure 3 is Figure 1 the exploded structural schematic diagram of

[0022] Figure 4 is a three-dimensional structural schematic diagram of the elastic part;

[0023] Figure 5 is a three-dimensional structural schematic diagram of the connecting rod;

[0024] Figure 6 is a three-dimensional structural schematic diagram of the chair;

[0025] Figure 7 is Figure 6 the schematic cross-sectional structure diagram of

[0026] In the figure, there are support part 100; connecting part 101; connecting rod 102; elastic part 103; flat spring piece 104; undulating spring piece 105; positioning block 106; swing cavity 107; swing notch 108; wear-resistant block 109; swing block 110; spherical surface 111; mounting block 112; limiting ring 113; adjusting part 200; operating handle 201; overtime plate 202; guide sleeve 203; limiting hole 204; connecting block 205; limiting part 300; limiting cavity 301; limiting column 302; limiting sleeve 303; limiting block 304; abutting ring part 305; chair frame 400; connecting plate 401; backrest 402; cross bar 403; seat cushion 404. Detailed implementation manners

[0027] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a certain specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0029] As Figures 1 - 5 shown, a seat cushion swing device includes:

[0030] Support part 100, which is used for fixing with seat cushion 404;

[0031] Connecting part 101, which is used for fixing with chair frame 400;

[0032] Connecting rod 102, the first end of connecting rod 102 is connected to connecting part 101, the second end of connecting rod 102 is connected to support part 100, and support part 100 can swing relative to connecting rod 102;

[0033] Elastic part 103, which is arranged between support part 100 and connecting part 101.

[0034] In this embodiment, when the user sits on the seat cushion 404, according to the user's posture, each elastic component can be adaptively compressed and tilted, so that the distance and relative tilt angle between the support part 100 and the connecting part 101 are changed, enabling the seat cushion 404 to swing relative to the connecting part 101 flexibly according to various postures of the user, adjust the tilt angle, reduce the muscle load of the user, reduce the pressure on the coccyx, and improve the comfort of the user.

[0035] Preferably, the elastic member 103 includes an annular spring. The annular spring is sleeved outside the connecting rod 102. The annular spring includes multiple elastic parts stacked in sequence. Each elastic part includes a flat spring piece 104 and a corrugated spring piece 105, and the flat spring piece 104 is fixed to the adjacent corrugated spring piece 105.

[0036] In this embodiment, when the flat spring piece 104 or the corrugated spring piece 105 on the annular spring is fixed to the support part 100 and the connecting part 101, there can be sufficient contact area. Moreover, due to the unique wave shape of the corrugated spring piece 105 of the wave spring, it can provide a large uniform elastic force in a small space; due to the uniform material distribution and less stress concentration, it has high fatigue resistance and can maintain good performance under multiple cyclic loadings, thus extending the service life.

[0037] It is worth mentioning that both the connecting part 101 and the support part 100 are plate-like structures. Multiple positioning blocks 106 are annularly and spacedly arranged on both the connecting part 101 and the support part 100. When the annular spring is installed between the connecting part 101 and the support part 100, the positioning blocks 106 can limit the installation position of the annular spring.

[0038] Further preferably, a swing cavity 107 is provided on the support part 100, and a swing notch 108 communicating with the swing cavity 107 is also provided on the support part 100. The first end of the connecting rod 102 passes through the swing notch 108 and extends into the swing cavity 107, and a swing gap is provided between the first end of the connecting rod 102 and the inner wall of the swing notch 108.

[0039] In this embodiment, the swing cavity 107 can be formed by directly opening a cavity on the support part 100, but the direct friction noise between the connecting rod 102 and the support part 100 is relatively large; therefore, a wear-resistant block 109 is added on the support part 100, and the swing cavity 107 is arranged on the wear-resistant block 109. The material of the wear-resistant block 109 is nylon material. When the wear-resistant block 109 and the first end of the connecting rod 102 rub against each other, no sound will be generated. Moreover, when the wear-resistant block 109 is severely damaged, the wear-resistant block 109 can be replaced separately, and the cost is relatively low.

[0040] Specifically, a swing block 110 is provided at the first end of the connecting rod 102, and a spherical surface 111 is provided on the outer surface of the swing block 110. The cavity wall of the swing cavity 107 is a spherical cavity wall, and the spherical surface 111 is abutted against the spherical cavity wall, so that when the support part 100 swings, the spherical cavity wall can swing relative to the spherical surface 111.

[0041] It is worth mentioning that a mounting block 112 is provided on the support portion 100, a mounting cavity is provided in the mounting block 112, and a limiting ring 113 is provided at the first end of the mounting cavity, the second end of the mounting cavity is connected to the external space, a limiting groove is provided on the outer peripheral surface of the wear-resistant block 109, a step surface is formed between the limiting groove and the wear-resistant block 109, the wear-resistant block 109 is arranged in the mounting cavity, the step surface is abutted against the limiting ring 113, the swing notch 108 is also provided on the wear-resistant block 109, and the upper end of the swing cavity 107 is also connected to the external space, when the seat cushion 404 is installed, the upper end of the wear-resistant block 109 is abutted against the lower end surface of the seat cushion 404.

[0042] Specifically, when the connecting rod 102 is located in the swing cavity 107, a space is left between the first end of the connecting rod 102 and the top of the swing cavity 107, ensuring that when the support part 100 swings relative to the connecting rod 102, the support part 100 and the swing block 110 will not collide with each other and cause operation interference.

[0043] Further preferably, an adjusting portion 200 is provided on the connecting rod 102 , and the adjusting portion 200 is connected to the connecting portion 101 , so that the straight-line distance between the supporting portion 100 and the connecting portion 101 is adjustable.

[0044] In this embodiment, the elastic force of the elastic member 103 can be adjusted by adjusting the linear distance between the support portion 100 and the connection portion 101 , so that the elastic force of the elastic member 103 can be adjusted according to actual usage requirements.

[0045] It is worth mentioning that the straight-line distance between the supporting part 100 and the connecting part 101 can be adjusted by changing the relative connection position between the connecting part 101 and the connecting rod 102. The adjusting part 200 includes an external thread arranged on the second end of the connecting rod 102, and a threaded hole is arranged on the connecting part 101. The external thread on the connecting rod 102 is threadedly connected with the threaded hole. Then, the straight-line distance between the supporting part 100 and the connecting part 101 can be adjusted by rotating the connecting rod 102.

[0046] Further preferably, an operating portion is fixedly provided on the second end of the connecting rod 102 .

[0047] In this embodiment, the setting of the operating portion not only provides a force point when the connecting rod 102 is rotated, but also prevents the connecting rod 102 from being detached from the connecting portion 101 .

[0048] Specifically, the operation part includes an operation handle 201. A reinforcement plate 202 is fixedly arranged on the operation handle 201. A guide sleeve 203 is arranged on the reinforcement plate 202, and a limiting hole 204, preferably square, is arranged on the reinforcement plate 202. The second end of the connecting rod 102 is provided with a connecting block 205, also square. The connecting block 205 extends into the limiting hole 204, and the outer wall of the connecting block 205 abuts against the hole wall of the limiting hole 204. A connecting screw passes through the operation handle 201, the reinforcement plate 202 and is screwed to the end of the second end of the connecting rod 102 to fix the connecting rod 102 to the operation handle 201. The reinforcement plate 202 is preferably made of metal, and the operation handle 201 is made of wood structure.

[0049] It is worth mentioning that in order to make the seat cushion 404 still swing flexibly when users of different weights sit on the chair in this application, the operation handle 201 can be rotated according to the weight of the user sitting on the seat cushion 404, driving the connecting rod 102 to rotate, so that the connecting part 101 screwed to the connecting rod 102 moves, adjusting the linear distance between the support part 100 and the connecting part 101, realizing the adjustment of the elastic force of the elastic member 103, so that users of different weights can sit on the chair in this application, and the adaptability is better.

[0050] Preferably, a swing limiting member is arranged between the connecting part 101 and the support part 100. The setting of the swing limiting member can prevent the swing amplitude of the support part 100 from being too large, and at the same time can also limit the support part 100 from rotating during use.

[0051] Further preferably, the swing limiting member includes a limiting part 300 arranged on one of the support part 100 and the connecting part 101, and a limiting cavity 301 is arranged on the other of the two. The limiting part 300 extends into the limiting cavity 301, and a limiting gap is arranged between the limiting part 300 and the cavity wall of the limiting cavity 301.

[0052] In this embodiment, as a preferred solution, a limiting part 300 is arranged on the connecting part 101, and a limiting cavity 301 is arranged on the support part 100. When the support part 100 swings relative to the connecting part 101, the limiting cavity 301 also swings with the movement of the support part 100. When the swing of the support part 100 exceeds a preset angle, the limiting part 300 will abut against the cavity wall of the limiting cavity 301 to limit the relative swing angle between the support part 100 and the connecting part 101.

[0053] It is worth mentioning that the limiting part 300 includes a limiting post 302 arranged on the connecting part 101. A limiting sleeve 303 is sleeved on the limiting post 302. A limiting block 304 is arranged on the support part 100, and the limiting cavity 301 is opened on the limiting block 304.

[0054] Further preferably, along the direction from the first end to the second end of the connecting rod 102, an outward inclination angle a is provided between the cavity wall of the limiting cavity 301 and the central axis of the limiting cavity 301.

[0055] In this embodiment, the limiting cavity 301 and the limiting portion 300 restrict the supporting portion 100 by mutual abutment. Then, in order to ensure that the cavity wall of the limiting cavity 301 is inclined, it can be ensured that there is sufficient abutting area for surface contact when the limiting cavity 301 and the limiting portion 300 are in abutment.

[0056] It is worth mentioning that an abutting ring portion 305 is provided on the limiting sleeve 303.

[0057] As Figures 6 - 7 shown, a chair includes the above-mentioned seat cushion swinging device, and further includes a chair frame 400. A connecting plate 401 is fixedly provided on the chair frame 400. The connecting portion 101 is fixed to the connecting plate 401, and along the direction from the rear legs to the front legs of the chair frame 400, the connecting plate 401 is inclined upward.

[0058] In this embodiment, after the user sits on the horizontally arranged seat cushion 404, there may be a tendency for their buttocks to slide forward. Therefore, in this application, an anti-slip angle b is provided between the connecting plate 401 and the horizontal plane. Then, the connecting portion 101 provided on the connecting plate 401 will also be inclined relatively, so that the upper seat cushion 404 is inclined relative to the horizontal plane.

[0059] Specifically, an installation groove is provided on the connecting plate 401. The connecting portion 101 is located in the installation groove, and the connecting portion 101 and the operating handle 201 are respectively located on both sides of the connecting plate 401.

[0060] It is worth mentioning that a backrest cushion 402 is hinged at the backrest of the chair frame 400, and the cross bar 403 at the backrest can also limit the swinging angle of the backrest cushion 402.

[0061] It should be noted that in the present utility model, descriptions such as "first", "second", "one", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. Terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0062] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0063] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar ways to substitute them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A seat cushion swing device, characterized in that, Comprising: A support part for fixing to a seat cushion; A connecting part for fixing to a chair frame; A connecting rod, the first end of the connecting rod is connected to the connecting part, the second end of the connecting rod is connected to the support part, and the support part can swing relative to the connecting rod; An elastic member disposed between the support part and the connecting part.

2. The cushion swing device according to claim 1, characterized in that, The elastic member includes an annular spring sleeved outside the connecting rod. The annular spring includes multiple elastic parts stacked in sequence. Each elastic part includes a flat spring piece and a undulating spring piece, and the flat spring piece is fixed to the adjacent undulating spring piece.

3. The seat cushion swing device according to claim 1, characterized in that, A swing cavity is provided on the support part, and a swing notch communicating with the swing cavity is also provided on the support part. The end of the first end of the connecting rod passes through the swing notch and extends into the swing cavity, and a swing gap is provided between the end of the first end of the connecting rod and the inner wall of the swing notch.

4. A seat cushion swing device according to claim 1, characterized in that, An adjusting part is provided on the connecting rod, and the adjusting part is connected to the connecting part so that the linear distance between the support part and the connecting part is adjustable.

5. The cushion swing device according to claim 4, characterized in that The end of the second end of the connecting rod is fixedly provided with an operating part.

6. The seat cushion swing device according to claim 1, characterized in that, A swing limiting member is provided between the connecting part and the support part.

7. A seat cushion swing device according to claim 6, characterized in that, The swing limiting member includes a limiting part provided on one of the support part and the connecting part, and a limiting cavity is provided on the other of the two. The limiting part extends into the limiting cavity, and a limiting gap is provided between the limiting part and the cavity wall of the limiting cavity.

8. A seat cushion swing device according to claim 7, characterized in that, Along the direction of extension from the first end to the second end of the connecting rod, an outward inclination angle is provided between the cavity wall of the limiting cavity and the central axis of the limiting cavity.

9. A chair, characterized in that, Comprising a seat cushion swing device according to any one of the above claims 1-8.

10. A chair according to claim 9, characterized in that, It further includes a chair frame. A connecting plate is fixedly provided on the chair frame. The connecting part is fixed to the connecting plate, and the connecting plate is inclined upward along the direction from the rear legs to the front legs of the chair frame.

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