CN215583599U

CN215583599U - Firm adjusting device in office chair chassis

Info

Publication number: CN215583599U
Application number: CN202122301741.1U
Authority: CN
Inventors: 邱建峰
Original assignee: Zhejiang Anji Sheng'an Furniture Co ltd
Current assignee: Zhejiang Anji Sheng'an Furniture Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-01-21
Anticipated expiration: 2031-09-23

Abstract

The utility model belongs to the technical field of office chairs, and particularly relates to a device for stably adjusting a chassis of an office chair. The adjustable backrest is reasonable in structural design, the height of the chassis can be stably adjusted through the matching of the supporting rods, the mounting rings, the stabilizing frame, the universal wheels, the screw rods and the clamping grooves, the use of different employees is facilitated, the angle of the backrest can be conveniently adjusted according to different employees through the matching of the handle, the rotating wheel, the driving plate, the driving rod, the vertical rod, the supporting plate, the reset spring, the torsion spring, the arc-shaped inner gear, the gear and the rotating shaft, and the employees can sit on the office chair more comfortably for working.

Description

Firm adjusting device in office chair chassis

Technical Field

The utility model relates to the technical field of office chairs, in particular to a device for stably adjusting a chassis of an office chair.

Background

The office chair is a chair used by a worker sitting when the worker works, can prevent the worker from standing at the working time, can increase the working time of the worker, and is a necessary tool for an office.

However, the chassis of the existing office chair is inconvenient to adjust the height according to different employees, and the angle of the backrest is inconvenient to adjust according to different employees, so that the employees cannot sit on the office chair more comfortably, and therefore, the device for adjusting the stability of the chassis of the office chair is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects that the chassis of the existing office chair is inconvenient to adjust the height according to different staff, and the angle of a backrest is inconvenient to adjust according to different staff, so that the staff cannot sit on the office chair more comfortably, and provides a device for stably adjusting the chassis of the office chair.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an office chair chassis stabilizing and adjusting device, includes the chassis, one side fixed mounting on chassis has two install bins, and one side that two install bins are close to each other is rotated and is installed same axis of rotation, the outside of axis of rotation is fixed to be cup jointed with the back, the outside of axis of rotation is fixed to have cup jointed the gear, and fixed mounting has the torsional spring on the rear inner wall of the install bin that lies in the rear side, the one end fixed mounting of torsional spring is in one side of axis of rotation, and the install bin internal rotation that lies in the front side is provided with the runner, one side fixed mounting of runner has the handle, the opposite side fixed mounting of runner has the drive plate, the front side of drive plate is seted up and is equipped with the opening, it has the actuating lever to slide in the opening to cup joint, the outside fixed cup joint the montant of actuating lever, the bottom fixed mounting of montant has arc internal gear, the gear meshes with arc internal gear, the utility model discloses a fixed mounting has the backup pad on being located one side inner wall of the install bin of front side, the bottom fixed mounting of backup pad has two reset spring, and two reset spring's the equal fixed mounting in arc internal gear's in bottom has the bracing piece, the outside of bracing piece slides and has cup jointed the collar, one side screw thread of collar is provided with the screw rod, a plurality of draw-in grooves have been seted up to one side of bracing piece, screw rod activity joint is in the draw-in groove that corresponds.

Preferably, five stabilizing frames are fixedly mounted on the outer side of the mounting ring, and universal wheels are rotatably arranged on the stabilizing frames.

Preferably, two handrails are fixedly mounted at the top of the chassis, and the backrest is located between the two handrails.

Preferably, the top of the supporting plate is provided with a sliding hole, and the vertical rod is sleeved in the sliding hole in a sliding manner.

Preferably, the other side of the installation box positioned on the front side is provided with a limiting opening, and the handle is movably sleeved in the limiting opening.

Preferably, a fixing plate is rotatably mounted at the rear side of the rotating wheel, and the fixing plate is fixedly mounted on the inner wall of the top of the mounting box at the front side.

According to the device for stably adjusting the chassis of the office chair, the height of the chassis can be stably adjusted through the matching of the supporting rods, the mounting rings, the stabilizing frames, the universal wheels, the screw rods and the clamping grooves, and the use of different staff is facilitated;

according to the office chair chassis stability adjusting device, the handle, the rotating wheel, the driving plate, the driving rod, the vertical rod, the supporting plate, the reset spring, the torsion spring, the arc-shaped inner gear, the gear and the rotating shaft are matched, so that the angle of a backrest can be conveniently adjusted according to different employees, and the employees can sit on the office chair more comfortably to work;

the adjustable backrest is reasonable in structural design, the height of the chassis can be stably adjusted through the matching of the supporting rods, the mounting rings, the stabilizing frame, the universal wheels, the screw rods and the clamping grooves, the use of different employees is facilitated, the angle of the backrest can be conveniently adjusted according to different employees through the matching of the handle, the rotating wheel, the driving plate, the driving rod, the vertical rod, the supporting plate, the reset spring, the torsion spring, the arc-shaped inner gear, the gear and the rotating shaft, and the employees can sit on the office chair more comfortably for working.

Drawings

FIG. 1 is a schematic structural view of a device for adjusting the stability of a chassis of an office chair according to the present invention;

FIG. 2 is a cross-sectional view of an office chair chassis stability adjustment mechanism according to the present invention;

FIG. 3 is a left side view of an office chair chassis stability adjustment apparatus according to the present invention;

FIG. 4 is a schematic structural view of part A of an office chair chassis stability adjustment device according to the present invention;

fig. 5 is a schematic structural diagram of a portion B of an office chair chassis stability adjustment device according to the present invention.

In the figure: 1. a chassis; 2. a support bar; 3. a mounting ring; 4. a stabilizing frame; 5. a universal wheel; 6. a hand-held rack; 7. a rotating shaft; 8. installing a box; 9. a handle; 10. a backrest; 11. a torsion spring; 12. a card slot; 13. a screw; 14. a gear; 15. an arc-shaped inner gear; 16. a rotating wheel; 17. a drive plate; 18. an opening; 19. a drive rod; 20. a vertical rod; 21. a support plate; 22. a return spring; 23. a limiting opening.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-5, an office chair chassis stabilizing and adjusting device comprises a chassis 1, two installation cases 8 are fixedly installed on one side of the chassis 1, the same rotating shaft 7 is rotatably installed on one side of the two installation cases 8 close to each other, a backrest 10 is fixedly sleeved on the outer side of the rotating shaft 7, a gear 14 is fixedly sleeved on the outer side of the rotating shaft 7, a torsion spring 11 is fixedly installed on the inner wall of the rear side of the installation case 8, one end of the torsion spring 11 is fixedly installed on one side of the rotating shaft 7, a rotating wheel 16 is rotatably installed in the installation case 8 on the front side, a handle 9 is fixedly installed on one side of the rotating wheel 16, a driving plate 17 is fixedly installed on the other side of the rotating wheel 16, an opening 18 is formed in the front side of the driving plate 17, a driving rod 19 is slidably sleeved in the opening 18, a vertical rod 20 is fixedly sleeved on the outer side of the driving rod 19, and an arc-shaped internal gear 15 is fixedly installed at the bottom end of the vertical rod 20, the gear 14 is meshed with the arc-shaped internal gear 15, a support plate 21 is fixedly installed on the inner wall of one side of the installation box 8 positioned on the front side, two return springs 22 are fixedly installed at the bottom of the support plate 21, the bottom ends of the two return springs 22 are fixedly installed at the top of the arc-shaped internal gear 15, when the angle of the backrest 10 needs to be adjusted, the handle 9 is pressed downwards, the handle 9 drives the rotating wheel 16 to rotate, the rotating wheel 16 drives the driving plate 17 to deflect upwards, the driving plate 17 drives the driving rod 19 and the vertical rod 20 to move upwards, the vertical rod 20 drives the arc-shaped internal gear 15 to move upwards so as not to be meshed with the gear 14, then the backrest 10 leans leftwards, the angle of the backrest 10 can be adjusted, when a person does not lean against the backrest 10, the backrest 10 can automatically reset under the action of the torsion spring 11, so that the angle of the backrest 10 can be adjusted more conveniently, after the angle of the backrest 10 is adjusted, the handle 9 is loosened, at the moment, under the action of a return spring 22, the arc-shaped inner gear 15 moves downwards and is meshed with the gear 14, so that the rotating shaft 7 and the backrest 10 can be effectively fixed, the angle of the backrest 10 can be conveniently adjusted according to different employees, the employees can sit on an office chair more comfortably, a support rod 2 is fixedly arranged at the bottom of the chassis 1, a mounting ring 3 is sleeved at the outer side of the support rod 2 in a sliding manner, a screw 13 is arranged on one side of the mounting ring 3 in a threaded manner, a plurality of clamping grooves 12 are formed in one side of the support rod 2, the screw 13 is movably clamped in the corresponding clamping groove 12, when the height of the chassis 1 needs to be adjusted, the screw 13 is unscrewed, the screw 13 is separated from the clamping groove 12, the mounting ring 3 is not fixed, the mounting ring 3 can move upwards and downwards, so that the height of the chassis 1 can be adjusted according to different employees, after the height is adjusted, the screw 13 is screwed, the screw 13 is clamped in the corresponding clamping groove 12, thereby fixing the mounting ring 3 to the support bar 2.

In the utility model, five stabilizing frames 4 are fixedly arranged on the outer side of the mounting ring 3, universal wheels 5 are rotatably arranged on the stabilizing frames 4, and the chassis 1 can be stably supported through the five stabilizing frames 4 and the universal wheels 5, so that the office chair is more stable.

According to the utility model, the two handrails 6 are fixedly arranged at the top of the chassis 1, and the backrest 10 is positioned between the two handrails 6, so that the walking of a person is facilitated, and the person can be limited at the same time.

In the utility model, the top of the supporting plate 21 is provided with the sliding hole, and the vertical rod 20 is slidably sleeved in the sliding hole, so that the vertical rod 20 is conveniently guided, and the sliding is more stable.

In the utility model, the other side of the installation box 8 positioned at the front side is provided with the limiting opening 23, and the handle 9 is movably sleeved in the limiting opening 23, so that the rotation of the handle 9 is conveniently not hindered.

In the utility model, the rear side of the rotating wheel 16 is rotatably provided with the fixing plate, and the fixing plate is fixedly arranged on the inner wall of the top part of the mounting box 8 positioned at the front side, so that the rotating wheel 16 is conveniently supported and can rotate more stably.

In the utility model, when the height of the chassis 1 needs to be adjusted, the screw 13 is unscrewed to separate the screw 13 from the clamping groove 12, so that the mounting ring 3 is not fixed, the mounting ring 3 and the universal wheel 5 can be moved up and down, so that the height of the chassis 1 can be adjusted according to different staff, after the height is adjusted, the screw 13 is screwed down to enable the screw 13 to be clamped in the corresponding clamping groove 12, so that the mounting ring 3 is fixed on the support rod 2, the chassis 1 can be stably supported through the five stabilizing frames 4 and the universal wheel 5, so that the office chair is more stable, when the angle of the backrest 10 needs to be adjusted, the handle 9 is pressed downwards, the handle 9 drives the rotating wheel 16 to rotate, the rotating wheel 16 drives the driving plate 17 to deflect upwards, the driving plate 17 drives the driving rod 19 and the vertical rod 20 to move upwards, the vertical rod 20 drives the arc-shaped inner gear 15 to move upwards, so that the arc-shaped inner gear 15 is not meshed with the gear 14, then lean on back 10 leftwards, the angle of back 10 can be adjusted, when the people does not lean on back 10, under the effect of torsional spring 11, back 10 can automatic re-setting, thereby more conveniently adjust the angle of back 10, after the angle modulation of back 10 is good, loosening handle 9, this moment under reset spring 22's effect, arc internal gear 15 moves down and meshes with gear 14, thereby can carry out effectual fixed to axis of rotation 7 and back 10, thereby conveniently adjust the angle of back 10 according to different staff, make the staff can be more comfortable the seat on the office chair.

Claims

1. The utility model provides an adjusting device that stabilizes on office chair chassis, includes chassis (1), its characterized in that, one side fixed mounting on chassis (1) has two install bins (8), and one side that two install bins (8) are close to each other is rotated and is installed same axis of rotation (7), the fixed back (10) that has cup jointed in the outside of axis of rotation (7), gear (14) have been fixed to have cup jointed in the outside of axis of rotation (7), and fixed mounting has torsional spring (11) on the rear side inner wall of the install bin (8) that is located the rear side, the one end fixed mounting of torsional spring (11) is in one side of axis of rotation (7), and the install bin (8) internal rotation that is located the front side is provided with runner (16), one side fixed mounting of runner (16) has handle (9), the opposite side fixed mounting of runner (16) has drive plate (17), the front side of drive plate (17) is opened and is equipped with opening (18), the drive rod (19) is sleeved in the opening (18) in a sliding manner, the vertical rod (20) is fixedly sleeved on the outer side of the drive rod (19), the arc-shaped internal gear (15) is fixedly installed at the bottom end of the vertical rod (20), the gear (14) is meshed with the arc-shaped internal gear (15), the support plate (21) is fixedly installed on the inner wall of one side of the installation box (8) on the front side, the two reset springs (22) are fixedly installed at the bottom of the support plate (21), the bottom ends of the two reset springs (22) are fixedly installed at the top of the arc-shaped internal gear (15), the support rod (2) is fixedly installed at the bottom of the chassis (1), the installation ring (3) is sleeved on the outer side of the support rod (2) in a sliding manner, a screw rod (13) is arranged on one side of the installation ring (3), and a plurality of clamping grooves (12) are formed in one side of the support rod (2), the screw rods (13) are movably clamped in the corresponding clamping grooves (12).

2. The chassis stability adjusting device of the office chair as claimed in claim 1, wherein five stabilizing frames (4) are fixedly installed on the outer side of the mounting ring (3), and universal wheels (5) are rotatably arranged on the stabilizing frames (4).

3. The chassis stability adjusting device of the office chair is characterized in that two handrails (6) are fixedly installed on the top of the chassis (1), and the backrest (10) is positioned between the two handrails (6).

4. The device for adjusting the stability of the chassis of the office chair as claimed in claim 1, wherein the top of the supporting plate (21) is provided with a sliding hole, and the vertical rod (20) is slidably sleeved in the sliding hole.

5. The chassis stability adjusting device of the office chair as claimed in claim 1, wherein a limiting opening (23) is formed in the other side of the mounting box (8) located on the front side, and the handle (9) is movably sleeved in the limiting opening (23).

6. An office chair chassis stability adjusting device according to claim 1, characterized in that the rear side of the rotating wheel (16) is rotatably installed with a fixing plate which is fixedly installed on the top inner wall of the installation box (8) at the front side.