A multi-dimension adjustable lumbar support structure and office chair

Abstract

The utility model provides a kind of multi-dimension adjusting type lumbar support structure and office chair, multi-dimension adjusting type lumbar support structure, comprising: lumbar support main body;The both sides of lumbar support main body are provided with side wall, and side wall is rotated with the cooperation of lumbar support main body by damping pivot structure;The top of lumbar support main body is provided with upper support plate, and upper support plate is rotated with the cooperation of lumbar support main body by elastic turnover structure.The utility model is relative to prior art, and the multi-dimension adjusting type lumbar support structure of the utility model not only can support the both sides of user's waist behind, improve the "package" feeling to user's waist, but also can support the part of user's back above lumbar support main body, to expand the support position of user, user experience is better, lumbar support main body can also rotate and adjust up and down, and side wall and upper support plate can also realize rotation, so as to effectively adapt to users of different body shape, simple structure and ingenious design.

Description

Technical Field

[0001] This utility model relates to the field of office chair technology, specifically to a multi-dimensional adjustable lumbar support structure and an office chair. Background Technology

[0002] Office chairs refer to various types of chairs provided for convenience during daily work and social activities. Since sitting in office chairs for extended periods can easily lead to many adverse health effects, and significantly increases the risk of cervical spondylosis, headrests are typically included in these chairs to facilitate rest and relaxation for office workers.

[0003] Office chairs typically consist of a base, backrest, backrest, and headrest. The base usually has multiple casters to facilitate the movement of the office chair. The backrest is fixed to the base for the user to sit on, while the backrest is located behind the backrest and is installed on the backrest to support the user's back. The headrest is installed on the backrest to support the user's head.

[0004] Current backrests usually also include a lumbar support structure. However, the current lumbar support is usually just a soft cushion that only supports the back of the waist and cannot provide support for other parts of the waist, resulting in poor comfort. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and provide a multi-dimensional adjustable lumbar support structure and office chair.

[0006] One embodiment of this utility model provides a multi-dimensional adjustable lumbar support structure, including: a lumbar support body;

[0007] Both sides of the lumbar support body are provided with side panels, which are rotatably engaged with the lumbar support body through a damping pivot structure.

[0008] The lumbar support body is provided with an upper support plate at its top, and the upper support plate is rotatably engaged with the lumbar support body through an elastic flipping structure.

[0009] In some optional embodiments, movable cavities are provided on both sides of the lumbar support body, each movable cavity having a limiting opening, and the damping rotating shaft structure extending into the movable cavity from the limiting opening, the damping rotating shaft structure rotatingly engaging with the movable cavity.

[0010] In some optional embodiments, the movable cavity is provided with a plurality of first damping teeth, and the damping shaft structure is provided with a plurality of second damping teeth, wherein the first damping teeth mesh with the second damping teeth.

[0011] In some alternative embodiments, the elastic flipping structure is an elastic manganese steel plate having a first mounting portion and a second mounting portion, the included angle between the first mounting portion and the second mounting portion being an obtuse angle, the first mounting portion being mounted on the lumbar support body, and the second mounting portion being mounted on the upper support plate.

[0012] In some alternative implementations, the multi-dimensional adjustable lumbar support structure also includes a backrest, a height adjustment structure, and a cushioning elastic element;

[0013] The lifting and adjusting structure includes a lifting and adjusting seat, and the lumbar support body is flexibly and vertically mounted on the backrest via the lifting and adjusting seat;

[0014] The lumbar support body is rotatably engaged with the lifting and adjusting seat, and the buffer elastic element is disposed between the lumbar support body and the lifting and adjusting seat.

[0015] In some optional embodiments, the lifting adjustment structure further includes a lifting adjustment groove and a sliding adjustment component. The lifting adjustment groove is disposed on the backrest. Both sides of the lifting adjustment groove are provided with multiple ratchet grooves arranged sequentially from top to bottom. The upper end of the lifting adjustment groove is provided with a closing guide part, and the lower end of the lifting adjustment groove is provided with an opening guide part.

[0016] The sliding adjustment component includes a clamping elastic element and two pawls. The two pawls are provided with a first locking part and a second locking part. The pawls are rotatably mounted on the lifting adjustment seat. The clamping elastic element is connected to the two pawls respectively. When the two pawls approach each other, the pawls squeeze or stretch the clamping elastic element to cause the clamping elastic element to produce elastic deformation. The elastic force of the clamping elastic element is directed towards the ratchet groove.

[0017] The pawl and the ratchet groove are positioned and engaged so that the lifting adjustment seat can only rise relative to the backrest;

[0018] When the two pawls move upward to the closing guide, the closing guide guides the two pawls to move closer to each other to disengage from the ratchet groove, and the first locking part and the second locking part engage to restrict the two pawls from opening.

[0019] When the two pawls move downwards to the opening guide, the opening guide guides the two pawls to unfold.

[0020] In some alternative embodiments, the opening guide includes two guide slopes that gradually move away from each other from top to bottom.

[0021] In some alternative embodiments, the merging guide portion includes two guide straight portions arranged side by side.

[0022] In some alternative embodiments, the first snap-fit ​​portion is a slot, and the second snap-fit ​​portion is a snap-fit ​​member, wherein the snap-fit ​​member snaps into the slot to achieve a snap-fit ​​engagement between the first snap-fit ​​portion and the second snap-fit ​​portion.

[0023] Another embodiment of this utility model provides an office chair, including: a multi-dimensional adjustable lumbar support structure as described above.

[0024] Compared to existing technologies, the multi-dimensional adjustable lumbar support structure of this utility model not only supports the two sides of the user's lower back, improving the "wrapping" feeling of the user's lower back, but also supports the part of the user's back above the main body of the lumbar support, thereby expanding the support position for the user and providing a better user experience. The main body of the lumbar support can also rotate and be adjusted up and down, and the side panels and upper support plate can also rotate, thus effectively adapting to users of different body types. The structure is simple and ingeniously designed.

[0025] To provide a clearer understanding of this invention, the specific embodiments of this invention will be described below in conjunction with the accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a multi-dimensional adjustable lumbar support structure according to an embodiment of the present invention;

[0027] Figure 2 This is an exploded view of a multi-dimensional adjustable lumbar support structure according to an embodiment of the present invention;

[0028] Figure 3 This is a cross-sectional view of a multi-dimensional adjustable lumbar support structure according to an embodiment of the present invention;

[0029] Figure 4 for Figure 3 The enlarged view at point A is shown below;

[0030] Figure 5 This is a schematic diagram of the structure of a multi-dimensional adjustable lumbar support structure according to another embodiment of the present invention;

[0031] Figure 6 This is an exploded view of a multi-dimensional adjustable lumbar support structure according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the back-to-back structure of one embodiment of the present utility model;

[0033] Figure 8 for Figure 7 The enlarged view of point B shown.

[0034] Explanation of reference numerals in the attached figures:

[0035] 10. Lumbar support body; 11. Side panel; 111. Damping pivot structure; 112. Second damping tooth; 12. Upper support plate; 13. Elastic flipping structure; 131. First mounting part; 132. Second mounting part; 14. Movable cavity; 141. Limiting opening; 142. First damping tooth; 20. Backrest; 30. Lifting and adjusting structure; 31. Lifting and adjusting seat; 32. Lifting and adjusting groove; 321. Racket groove; 322. Closing guide part; 3221. Guide straight part; 323. Opening guide part; 3231. Guide inclined part; 33. Sliding adjustment part; 331. Pawl; 332. First locking part; 333. Second locking part; 40. Buffer elastic element. Detailed Implementation

[0036] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings of the embodiments thereof. Please refer to... Figures 1 to 3 One embodiment of this utility model provides a multi-dimensional adjustable lumbar support structure, including: a lumbar support body 10;

[0037] Both sides of the lumbar support body 10 are provided with side panels 11, and the side panels 11 are rotatably engaged with the lumbar support body 10 through a damping pivot structure 111.

[0038] The top of the lumbar support body 10 is provided with an upper support plate 12, which is rotated and engaged with the lumbar support body 10 through an elastic flipping structure 13.

[0039] The working principle of the multi-dimensional adjustable lumbar support structure according to one embodiment of this utility model is explained below:

[0040] After the user's waist is rested against the lumbar support body 10, the lumbar support body 10 can support the back of the user's waist, while the side panels 11 can support the sides of the user's waist near the back, thereby expanding the support area for the user's waist, providing better support and a better experience. The side panels 11 can be rotated and adjusted so that the angle of the side panels 11 relative to the lumbar support body 10 can be adapted to the user's body shape, resulting in good adaptability.

[0041] Furthermore, when a user sits in an office chair, their lower back is supported by the lumbar support body 10, and the upper part of their back is supported by the backrest 20. However, there is still a significant gap between the lumbar support body 10 and the backrest 20, typically near the latissimus dorsi muscles. The upper support plate 12 fills this gap, allowing the upper support plate 12 and the lumbar support body 10 to work in conjunction with the backrest 20 to provide extensive support for the back. The elastic flip structure 13 helps the upper support plate 12 maintain pressure against the user's back, allowing it to adapt to the user's body shape, while the elasticity of the flip structure 13 ensures sufficient support.

[0042] Please see Figure 4 To facilitate the assembly of the damping pivot structure 111, in some optional embodiments, movable cavities 14 are provided on both sides of the lumbar support body 10. Each movable cavity 14 has a limiting opening 141. The damping pivot structure 111 extends into the movable cavity 14 through the limiting opening 141, and the damping pivot structure 111 rotatably engages with the movable cavity 14. The damping pivot structure 111 can rotate relative to the movable cavity 14, thereby enabling the side panel 11 to rotate stably relative to the lumbar support body 10. The limiting openings 141 on both sides can restrict the rotation range of the damping pivot structure 111, thereby preventing excessive rotation of the side panel 11.

[0043] The damping effect of the damping shaft structure 111 can be designed according to actual needs. For example, in some optional embodiments, a plurality of first damping teeth 142 are provided in the movable cavity 14, and a plurality of second damping teeth 112 are provided on the damping shaft structure 111. The first damping teeth 142 mesh with the second damping teeth 112, and the cooperation between the first damping teeth 142 and the second damping teeth 112 increases the resistance to the damping shaft structure 111, so that the side plate 11 needs to be subjected to sufficient force to rotate.

[0044] The specific structure of the elastic flip structure 13 can be designed according to actual needs. For example, the elastic flip structure 13 can adopt a hinge with a torsion spring. In this embodiment, the elastic flip structure 13 is an elastic manganese steel plate. The manganese steel plate has a first mounting part 131 and a second mounting part 132. The included angle between the first mounting part 131 and the second mounting part 132 is an obtuse angle. The first mounting part 131 is mounted on the lumbar support body 10, and the second mounting part 132 is mounted on the upper support plate 12. The manganese steel plate has sufficient strength and a certain degree of elasticity, which enables the upper support plate 12 to be stably assembled and rotated, ensuring that the upper support plate 12 can effectively support the user.

[0045] Please see Figures 5 to 6In some optional embodiments, the multi-dimensional adjustable lumbar support structure further includes a backrest 20, a height adjustment structure 30, and a cushioning elastic element 40. The height adjustment structure 30 includes a height adjustment seat 31, through which the lumbar support body 10 is vertically and vertically mounted on the backrest 20. The lumbar support body 10 and the height adjustment seat 31 are rotatably engaged, and the cushioning elastic element 40 is disposed between the lumbar support body 10 and the height adjustment seat 31. The lumbar support body 10 achieves height adjustment relative to the backrest 20 through the height adjustment seat 31 of the height adjustment structure 30, thereby enabling the position of the lumbar support body 10 to be actively adjusted relative to the user's waist, improving the user's comfort.

[0046] After the user sits in the office chair, the user's lower back presses against the lumbar support body 10. Under the user's weight, the lumbar support body 10 can rotate adaptively, thereby adjusting the angle of the lumbar support body 10. When the lumbar support body 10 rotates backward, the buffer elastic element 40 will undergo elastic deformation. The elastic force of the buffer elastic element 40 drives the lumbar support body 10 to press against the user's lower back, so that the lumbar support body 10 remains against the user's lower back, thereby providing support for the user's lower back.

[0047] Please see Figures 7 to 8 In some optional embodiments, the lifting adjustment structure 30 also includes a lifting adjustment groove 32 and a sliding adjustment member 33. The lifting adjustment groove 32 is disposed on the backrest 20. Both sides of the lifting adjustment groove 32 are provided with a plurality of ratchet grooves 321 arranged sequentially from top to bottom. The upper end of the lifting adjustment groove 32 is provided with a closing guide part 322, and the lower end of the lifting adjustment groove 32 is provided with an opening guide part 323.

[0048] The sliding adjustment member 33 includes a clamping elastic member and two pawls 331. The two pawls 331 are provided with a first locking part 332 and a second locking part 333. The pawls 331 are rotatably mounted on the lifting adjustment seat 31. The clamping elastic member is connected to the two pawls 331 respectively. When the two pawls 331 approach each other, the pawls 331 squeeze or stretch the clamping elastic member to make the clamping elastic member produce elastic deformation. The elastic force of the clamping elastic member is directed towards the ratchet groove 321. The pawls 331 and the ratchet groove 321 are positioned and engaged so that the lifting adjustment seat 31 can only rise relative to the back of 20.

[0049] Taking the initial state where the pawl 331 and the ratchet groove 321 are engaged as an example, the pawl 331 and the ratchet groove 321 are positioned and engaged. At this time, the lifting adjustment seat 31 can only rise relative to the back 20 and cannot move downward, thereby realizing the adjustment of the height position of the lifting adjustment seat 31. Since the lifting adjustment seat 31 will not move downward, the gravity of the lifting adjustment seat 31 will drive the pawl 331 to press against the ratchet groove 321. With the elastic force of the clamping elastic element, the pawl 331 is pressed into the ratchet groove 321, so that the pawl 331 and the ratchet groove 321 can stably engage and position the lifting adjustment seat 31. If the lifting adjustment seat 31 needs to be adjusted upward relative to the backrest 20, force is applied to lift the lifting adjustment seat 31. At this time, the two pawls 331 will be guided by the ratchet groove 321 to move closer to each other until the pawls 331 cross the current ratchet groove 321. After reaching the adjacent ratchet groove 321 above, the elastic force of the pressing elastic element will drive the pawls 331 to press again into the adjacent ratchet groove 321 above, thereby adjusting the height by one level.

[0050] When it is necessary to adjust the lifting adjustment seat 31 downwards, the lifting adjustment seat 31 needs to be moved upwards along the lifting adjustment groove 32 to the highest point of its stroke. During the upward movement, when the two pawls 331 move upwards to the closing guide part 322, the closing guide part 322 will guide the two pawls 331 to move closer to each other so that the pawls 331 disengage from the ratchet groove 321. The first locking part 332 and the second locking part 333 engage to restrict the opening of the two pawls 331. At this time, the pawls 331 will not open under the elastic force of the clamping elastic element because they are restricted. Therefore, the pawls 331 will not engage with the ratchet groove 321. At this time, the pawls 331 of the lifting adjustment seat 31 can descend along the lifting adjustment groove 32, so that the lifting adjustment seat 31 can also descend. When the lifting adjustment seat 31 moves downwards... When the device moves to the lowest point of its travel range, it will cause the two pawls 331 to move downwards to the opening guide 323. At this time, the opening guide 323 guides the two pawls 331 away from each other, causing the two pawls 331 to unfold. After the two pawls 331 unfold, the first locking part 332 and the second locking part 333 separate from each other, releasing the restriction on the pawls 331. At this time, the lifting adjustment seat 31 rises again, and the pawls 331 rise along the lifting adjustment groove 32. After the pawls 331 reach the lowest ratchet groove 321, the two pawls 331 can enter the two ratchet grooves 321 under the drive of the clamping elastic element, realizing the limiting cooperation between the pawls 331 and the ratchet groove 321. Then, the lifting adjustment seat 31 is moved upwards to the position to be adjusted.

[0051] Since the lifting adjustment seat 31 can achieve unidirectional step-by-step adjustment, when the position to be adjusted is lower than the current position, the backrest 20 needs to be raised to the highest position, then returned to the lowest position, and finally raised to the position to be adjusted.

[0052] The specific structure of the opening guide 323 can be designed according to actual needs. For example, in some optional embodiments, the opening guide 323 includes two guide slopes 3231. The two guide slopes 3231 gradually move away from each other from top to bottom. When the lifting adjustment seat 31 moves downward, the pawl 331 contacts the guide slope 3231 and is then gradually rotated by the guide slope 3231, so that the two pawls 331 move away from each other.

[0053] In some alternative embodiments, the closing guide portion 322 includes two guide straight portions 3221 arranged side by side. When the lifting adjustment seat 31 moves upward, the pawl 331 contacts the guide straight portion 3221 and is then guided to rotate by the guide straight portion 3221, so that the two pawls 331 move closer to each other until the two pawls 331 can move closer to each other until the first locking portion 332 and the second locking portion 333 engage. In this embodiment, the two guide straight portions 3221 are parallel to each other.

[0054] The specific structures of the first latching portion 332 and the second latching portion 333 can be designed according to actual needs. For example, in some optional embodiments, the first latching portion 332 is a latching slot, and the second latching portion 333 is a latching member, which is inserted into the latching slot to achieve a latching engagement between the first latching portion 332 and the second latching portion 333. Of course, other suitable structures can also be used for the first latching portion 332 and the second latching portion 333, and this example is not limited to them.

[0055] The aforementioned multi-dimensional adjustable lumbar support structure can be applied to office chairs. This multi-dimensional adjustable lumbar support structure includes: the aforementioned multi-dimensional adjustable lumbar support structure.

[0056] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-dimensional adjustable lumbar support structure, characterized in that, include: Lumbar support; Both sides of the lumbar support body are provided with side panels, which are rotatably engaged with the lumbar support body through a damping pivot structure. The lumbar support body is provided with an upper support plate at its top, and the upper support plate is rotatably engaged with the lumbar support body through an elastic flipping structure.

2. The multi-dimensional adjustable lumbar support structure according to claim 1, characterized in that: Both sides of the lumbar support body are provided with movable cavities, each with a limiting opening. The damping rotating shaft structure extends into the movable cavity from the limiting opening and rotates in conjunction with the movable cavity.

3. The multi-dimensional adjustable lumbar support structure according to claim 2, characterized in that: The movable cavity is provided with a plurality of first damping teeth, and the damping shaft structure is provided with a plurality of second damping teeth, wherein the first damping teeth mesh with the second damping teeth.

4. The multi-dimensional adjustable lumbar support structure according to claim 1, characterized in that: The elastic flipping structure is a flexible manganese steel plate. The manganese steel plate has a first mounting part and a second mounting part. The included angle between the first mounting part and the second mounting part is an obtuse angle. The first mounting part is mounted on the lumbar support body, and the second mounting part is mounted on the upper support plate.

5. A multi-dimensional adjustable lumbar support structure according to any one of claims 1 to 4, characterized in that, It also includes a backrest, a height adjustment structure, and cushioning elastic components; The lifting and adjusting structure includes a lifting and adjusting seat, and the lumbar support body is flexibly and vertically mounted on the backrest via the lifting and adjusting seat; The lumbar support body is rotatably engaged with the lifting and adjusting seat, and the buffer elastic element is disposed between the lumbar support body and the lifting and adjusting seat.

6. The multi-dimensional adjustable lumbar support structure according to claim 5, characterized in that: The lifting adjustment structure also includes a lifting adjustment groove and a sliding adjustment component. The lifting adjustment groove is provided on the backrest. Both sides of the lifting adjustment groove are provided with multiple ratchet grooves arranged sequentially from top to bottom. The upper end of the lifting adjustment groove is provided with a closing guide part, and the lower end of the lifting adjustment groove is provided with an opening guide part. The sliding adjustment component includes a clamping elastic element and two pawls. The two pawls are provided with a first locking part and a second locking part. The pawls are rotatably mounted on the lifting adjustment seat. The clamping elastic element is connected to the two pawls respectively. When the two pawls approach each other, the pawls squeeze or stretch the clamping elastic element to cause the clamping elastic element to produce elastic deformation. The elastic force of the clamping elastic element is directed towards the ratchet groove. The pawl and the ratchet groove are positioned and engaged so that the lifting adjustment seat can only rise relative to the backrest; When the two pawls move upward to the closing guide, the closing guide guides the two pawls to move closer to each other to disengage from the ratchet groove, and the first locking part and the second locking part engage to restrict the two pawls from opening. When the two pawls move downwards to the opening guide, the opening guide guides the two pawls to unfold.

7. The multi-dimensional adjustable lumbar support structure according to claim 6, characterized in that: The opening guide includes two guide slopes that gradually move away from each other from top to bottom.

8. The multi-dimensional adjustable lumbar support structure according to claim 6, characterized in that: The closing guide section includes two guide sections, which are arranged side by side.

9. A multi-dimensional adjustable lumbar support structure according to claim 6, characterized in that: The first snap-fit ​​part is a slot, and the second snap-fit ​​part is a snap-fit ​​component. The snap-fit ​​component is snapped into the slot to achieve a snap-fit ​​engagement between the first snap-fit ​​part and the second snap-fit ​​part.

10. An office chair, characterized in that, include: A multi-dimensional adjustable lumbar support structure as described in any one of claims 1 to 9.

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