Office chair with waist supporting function

Abstract

The office chair with the waist supporting function comprises an office chair main body and a cavity, a backup plate is installed on the rear side of the upper end face of the office chair main body, a clamping groove is formed in the inner wall of the backup plate, the cavity is formed in the backup plate, a driving gear is installed in the cavity, and the driving gear is connected with the clamping groove. A connecting gear is installed in the driving gear, a threaded rod is installed in the driving gear, and a sliding block is installed on the outer surface of the threaded rod. According to the device, the installed sliding block is adjusted up and down in a clamping groove, and the height of the supporting main body is conveniently adjusted; then a threaded shaft is rotated to enable a mounting bracket which is elastically connected with a connecting plate to stretch out and draw back on fixing blocks on the two sides of a sliding block through telescopic sleeve rods on the inner wall of the mounting plate, so that the supporting main body is subjected to telescopic adjustment; the waist of a worker sitting for a long time can be conveniently supported, and the burden of the waist is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of office chairs, in particular to an office chair with a waist supporting function. Background Art

[0002] Office chairs refer to various chairs equipped for the convenience of work in daily work and social activities. Office partners divide office chairs into narrow and broad sense. The narrow sense of office chair refers to the backrest chair that people sit on when doing desk work in a sitting position. The broad sense of office chair is all chairs used in offices, including executive chairs, mid-shift chairs, meeting chairs, staff chairs, conference chairs, visitor chairs, training chairs, etc.

[0003] However, when using existing office chairs, the body is in the same posture for a long time, and the lumbar spine must bear the weight of the body, which will bring great pressure to the user's waist. The existing office chairs cannot support the waist of office workers, and long-term use can easily cause waist fatigue. For this reason, this case designs an office chair with a waist support function. Utility Model Content

[0004] The purpose of the utility model is to provide an office chair with a lumbar support function to solve the problem that when the office chair is used, the lumbar spine must bear the weight of the body because the body is in the same posture for a long time, which will bring great pressure to the user's waist. The existing office chairs cannot support the waist of office workers, and long-term use can easily cause waist fatigue.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an office chair with lumbar support function, comprising an office chair body and a cavity, a backrest plate is installed on the rear side of the upper end surface of the office chair body, a card slot is provided on the inner wall of the backrest plate, a cavity is provided inside the backrest plate, a driving gear is installed inside the cavity, a connecting gear is installed inside the driving gear, a threaded rod is installed inside the connecting gear, a slider is installed on the outer surface of the threaded rod, a threaded shaft is installed on the upper end of the slider located on the right side of the threaded rod, and the end of the threaded shaft is installed A connecting plate is installed, a shock-absorbing spring is installed on the inner wall of the connecting plate, a damping support rod is installed on the inner ring of the shock-absorbing spring, a mounting bracket is installed on the end of the shock-absorbing spring, a supporting body is installed on the inner side of the mounting bracket, supporting cotton is provided on the outer surface of the supporting body, limiting plates are installed on both side walls of the supporting body, threaded bolts are installed on both sides of the mounting bracket, a fixing plate is installed on the lower end wall of the mounting bracket, mounting plates are installed on both sides of the fixing plate, a telescopic sleeve rod is installed on the left side wall of the mounting plate, and a fixing block is installed on the end of the telescopic sleeve rod.

[0006] Preferably, the threaded rod forms a rotating structure through a connecting gear and a driving gear, and the sliding block forms a lifting structure through the threaded rod and a slot.

[0007] Preferably, the slider is threadedly connected to the threaded shaft, the mounting bracket is fixedly connected to the mounting plate via a fixing plate, the slider is fixedly connected to the fixing block, and the mounting plate forms a telescopic structure with the fixing block via a telescopic sleeve rod.

[0008] Preferably, the mounting bracket forms an elastic structure with the connecting plate through a shock-absorbing spring and a damping support rod.

[0009] Preferably, the mounting bracket is in a U-shaped structure, the support body forms a snap-fit ​​structure with the mounting bracket via a limiting plate, and the support body forms a detachable structure with the mounting bracket via a threaded bolt.

[0010] Preferably, the support body has an arc-shaped structure, and the support cotton is evenly distributed along the outer surface of the support body.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model adjusts the installed slider up and down in the card slot, which is convenient for adjusting the height of the support body, so as to meet the adjustment of patients of different heights when performing lumbar support, and then rotates the threaded shaft to retract the mounting bracket elastically connected to the connecting plate on the fixed blocks on both sides of the slider through the telescopic sleeve rod on the inner wall of the mounting plate, so as to retract and adjust the support body, which is convenient for lumbar support for staff who sit for a long time and reduces the burden on the waist;

[0013] 2. The utility model clamps the support body with the mounting bracket through the limit plate, and then rotates the threaded bolt to realize the disassembly and installation of the support body on the mounting bracket, which is convenient for disassembly and cleaning of the support body that has been working for a long time. Then, the mounting bracket performs a certain shock-absorbing and buffering effect between the shock-absorbing spring and the damping support rod and the connecting plate to avoid squeezing between the waist and the support body when the waist is hit, thereby increasing the comfort during support. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the slider adjustment structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the connection structure of the supporting body of the utility model.

[0017] In the figure: 1. office chair body; 2. backrest; 3. slot; 4. cavity; 5. driving gear; 6. connecting gear; 7. threaded rod; 8. slider; 9. threaded shaft; 10. connecting plate; 11. shock-absorbing spring; 12. damping support rod; 13. mounting bracket; 14. supporting body; 15. limit plate; 16. supporting cotton; 17. threaded bolt; 18. fixing plate; 19. mounting plate; 20. telescopic sleeve; 21. fixing block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 The utility model provides a technical solution: an office chair with a lumbar support function, comprising an office chair body 1 and a cavity 4, a back plate 2 is installed on the rear side of the upper end surface of the office chair body 1, a card slot 3 is opened on the inner wall of the back plate 2, a cavity 4 is opened inside the back plate 2, a driving gear 5 is installed inside the cavity 4, a connecting gear 6 is installed inside the driving gear 5, a threaded rod 7 is installed inside the connecting gear 6, a slider 8 is installed on the outer surface of the threaded rod 7, a threaded shaft 9 is installed on the upper end of the slider 8 and located on the right side of the threaded rod 7, a connecting plate 10 is installed on the end of the threaded shaft 9, and the inner surface of the connecting plate 10 is provided with a threaded shaft 9. A shock absorbing spring 11 is installed on the wall, a damping support rod 12 is installed on the inner ring of the shock absorbing spring 11, a mounting bracket 13 is installed on the end of the shock absorbing spring 11, a supporting body 14 is installed on the inner side of the mounting bracket 13, a supporting cotton 16 is provided on the outer surface of the supporting body 14, limiting plates 15 are installed on both side walls of the supporting body 14, threaded bolts 17 are installed on both sides of the mounting bracket 13, a fixing plate 18 is installed on the lower end wall of the mounting bracket 13, mounting plates 19 are installed on both sides of the fixing plate 18, a telescopic sleeve rod 20 is installed on the left side wall of the mounting plate 19, and a fixing block 21 is installed on the end of the telescopic sleeve rod 20.

[0020] Furthermore, the threaded rod 7 forms a rotating structure with the driving gear 5 through the connecting gear 6, and the slider 8 forms a lifting structure with the threaded rod 7 and the slot 3. The driving gear 5 is rotated by the handwheel rod to rotate the meshing connecting gear 6, thereby realizing the rotation of the threaded rod 7, and the installed slider 8 is adjusted up and down in the slot 3, which is convenient for adjusting the height of the support body 14, thereby meeting the adjustment requirements of patients of different heights when providing lumbar support.

[0021] Furthermore, the slider 8 is threadedly connected to the threaded shaft 9, the mounting bracket 13 is fixedly connected through the fixing plate 18 and the mounting plate 19, the slider 8 is fixedly connected to the fixing block 21, and the mounting plate 19 forms a telescopic structure with the fixing block 21 through the telescopic sleeve rod 20. Then, the threaded shaft 9 is rotated to retract the mounting bracket 13 elastically connected to the connecting plate 10 on the fixing blocks 21 on both sides of the slider 8 through the telescopic sleeve rod 20 on the inner wall of the mounting plate 19, thereby telescoping the support body 14, which is convenient for lumbar support for workers who sit for a long time and reduces the burden on the waist.

[0022] Furthermore, the mounting bracket 13 forms an elastic structure with the connecting plate 10 through the shock-absorbing spring 11 and the damping support rod 12, the mounting bracket 13 is a U-shaped structure, the support body 14 forms a clamping structure with the mounting bracket 13 through the limiting plate 15, and the support body 14 forms a detachable structure with the mounting bracket 13 through the threaded bolt 17. When the support body 14 is in use, the support body 14 is clamped with the mounting bracket 13 through the limiting plate 15, and then the threaded bolt 17 is rotated to realize the disassembly and installation of the support body 14 on the mounting bracket 13, which is convenient for disassembly and cleaning of the support body 14 that has been working for a long time. Then, the mounting bracket 13 performs a certain shock-absorbing and buffering effect between the shock-absorbing spring 11 and the damping support rod 12 and the connecting plate 10, so as to avoid squeezing between the waist and the support body 14 when the waist is hit, thereby increasing the comfort during support.

[0023] Furthermore, the support body 14 has an arc-shaped structure, and the support cotton 16 is evenly distributed along the outer surface of the support body 14, thereby improving the comfort of lumbar support.

[0024] Working principle: First, the installed slider 8 is adjusted up and down in the slot 3, so as to facilitate the height adjustment of the support body 14, so as to meet the adjustment of patients of different heights when performing lumbar support, and then the threaded shaft 9 is rotated to retract the mounting bracket 13 elastically connected to the connecting plate 10 on the fixed blocks 21 on both sides of the slider 8 through the telescopic sleeve rod 20 on the inner wall of the mounting plate 19, so as to retract and adjust the support body 14, which is convenient for lumbar support for staff who sit for a long time, and then when the support body 14 is used, the support body 14 is engaged with the mounting bracket 13 through the limit plate 15, and then the threaded bolt 17 is rotated to realize the disassembly and installation of the support body 14 on the mounting bracket 13, which is convenient for disassembly and cleaning of the support body 14 that has been working for a long time, and then the mounting bracket 13 performs a certain shock-absorbing and buffering effect between the shock-absorbing spring 11 and the damping support rod 12 and the connecting plate 10, so as to avoid squeezing between the waist and the support body 14 when the waist is hit, thereby increasing the comfort during support.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An office chair with lumbar support function, comprising an office chair body (1) and a cavity (4), characterized in that: A backrest (2) is installed on the rear side of the upper end surface of the office chair body (1), a slot (3) is provided on the inner wall of the backrest (2), a cavity (4) is provided inside the backrest (2), a driving gear (5) is installed inside the cavity (4), a connecting gear (6) is installed inside the driving gear (5), a threaded rod (7) is installed inside the connecting gear (6), a slider (8) is installed on the outer surface of the threaded rod (7), a threaded shaft (9) is installed on the upper end of the slider (8) located on the right side of the threaded rod (7), a connecting plate (10) is installed at the end of the threaded shaft (9), a shock absorbing spring (11) is installed on the inner wall of the connecting plate (10), and the shock absorbing spring (11) ) is installed with a damping support rod (12) on its inner ring, a mounting bracket (13) is installed at the end of the shock absorbing spring (11), a supporting body (14) is installed on the inner side of the mounting bracket (13), a supporting cotton (16) is arranged on the outer surface of the supporting body (14), limiting plates (15) are installed on both side walls of the supporting body (14), threaded bolts (17) are installed on both sides of the mounting bracket (13), a fixing plate (18) is installed on the lower end wall of the mounting bracket (13), mounting plates (19) are installed on both sides of the fixing plate (18), a telescopic sleeve rod (20) is installed on the left side wall of the mounting plate (19), and a fixing block (21) is installed on the end of the telescopic sleeve rod (20).

2. The office chair with lumbar support function according to claim 1, characterized in that: The threaded rod (7) forms a rotating structure with the connecting gear (6) and the driving gear (5), and the sliding block (8) forms a lifting structure with the threaded rod (7) and the clamping groove (3).

3. The office chair with lumbar support function according to claim 1, characterized in that: The slider (8) is threadedly connected to the threaded shaft (9), the mounting bracket (13) is fixedly connected to the mounting plate (19) via a fixing plate (18), the slider (8) is fixedly connected to the fixing block (21), and the mounting plate (19) forms a telescopic structure with the fixing block (21) via a telescopic sleeve rod (20).

4. The office chair with lumbar support function according to claim 1, characterized in that: The mounting bracket (13) forms an elastic structure with the connecting plate (10) through the shock absorbing spring (11) and the damping support rod (12).

5. The office chair with lumbar support function according to claim 1, characterized in that: The mounting bracket (13) is a U-shaped structure, the supporting body (14) forms a snap-fit ​​structure with the mounting bracket (13) via a limiting plate (15), and the supporting body (14) forms a detachable structure with the mounting bracket (13) via a threaded bolt (17).

6. The office chair with lumbar support function according to claim 1, characterized in that: The supporting body (14) is in an arc-shaped structure, and the supporting cotton (16) is evenly distributed along the outer surface of the supporting body (14).

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