CN212591140U

CN212591140U - Swivel chair tray with torsion spring force adjusted by knob

Info

Publication number: CN212591140U
Application number: CN202020591951.1U
Authority: CN
Inventors: 韩杰; 杨锡其; 喻卫刚; 朱沈元; 金力凯; 沈烈虎; 周钰
Original assignee: Young Hangzhou Industrial Co ltd
Current assignee: Young Hangzhou Industrial Co ltd
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2021-02-26
Anticipated expiration: 2030-04-20

Abstract

The utility model discloses a swivel chair tray of torsion spring power is adjusted to knob, its is rational in infrastructure, and spare part is arranged compactly, shared small, and adjustable torsion spring power has solved technical problem such as inconvenient, the structure is complicated of operation. The middle of a fixing plate 1 is embedded with a taper pipe 4, the fixing plate 1 is penetrated with a first rivet 5 and a second rivet 6, the first rivet 5 is sleeved with a torsion spring 7, the second rivet 6 is sleeved with a bottom plate 2, a gear plate 3 is fixed in front of the bottom plate 2, an elastic adjusting knob 21 is fixed on the fixing plate 1, an elastic supporting seat 12 is fixed on the elastic adjusting knob, and one end of the torsion spring 7 is located above the elastic supporting seat 12.

Description

Swivel chair tray with torsion spring force adjusted by knob

Technical Field

The utility model relates to a swivel chair tray, in particular to a swivel chair tray with a knob for adjusting torsional spring force.

Background

With the development of science and technology and the progress of society, the living level and the office condition of people are continuously improved, and the demand of the swivel chair is increased. The tray of the swivel chair is an important part arranged below the cushion of the swivel chair, and the lifting of the cushion and the inclination angle adjustment of the backrest are all completed by the chassis. At present, the back-up angle of a common swivel chair can be adjusted to meet the requirements of people on different sitting postures. The utility model discloses a swivel chair chassis is disclosed in chinese utility model patent specification CN104223821B, which comprises a base, bracket and wane, the bracket sets up in the base, the wane sets up in the bracket, the wane uses first round pin axle as the rotation fulcrum, first round pin axle passes the bracket and links to each other with the base, the wane front portion is through first connecting rod, the bracket is prized to the second connecting rod, first connecting rod passes through the third round pin axle with the second connecting rod and articulates and the third round pin axle links to each other with the bracket, the second connecting rod is worn to have second round pin axle and second round pin axle to pass or to link to each other with the base after avoiding the bracket, the track groove has been seted up at the bilateral symmetry of bracket, first round pin axle is worn to establish at the track inslot, this chassis still includes the elasticity resetting means that makes the bracket can resume the normal position after. However, the structure of the swivel chair tray is complex, the arrangement of parts is not compact, the occupied volume is large, and the operation is not convenient.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a swivel chair tray with a knob for adjusting the force of a torsion spring, which solves the technical problems of inconvenient operation, complex structure and the like.

The utility model adopts the technical proposal that: a swivel chair tray for adjusting torsional spring force by a knob comprises a fixing plate, wherein a taper pipe is embedded in the middle of the fixing plate, a first rivet and a second rivet penetrate through the fixing plate, a torsional spring is sleeved on the first rivet, the second rivet is sleeved with a bottom plate, a gear plate is fixed in front of the bottom plate, a control rod penetrates through one side of the fixing plate, an elastic adjusting knob is fixed on the fixing plate, an elastic supporting seat is fixed on the elastic adjusting knob, and one end of the torsional spring is located above the elastic supporting seat.

Preferably, the control rod is sequentially sleeved with a pressure rising and reducing plate, a locking adjusting piece and a clamp spring. The rotary control rod can control the lifting pressure plate to rotate, the valve is opened or closed, the lifting of the seat is realized, the clamp spring plays a role in locking, and the lifting pressure plate and the locking adjusting piece move axially.

Preferably, the locking adjusting part is penetrated with one end of a locking torsion spring, the same end of the locking torsion spring is sleeved on a locking screw, the locking screw fixes the elastic block on the fixing plate, and the other end of the locking torsion spring is connected with a locking pin. The locking of the seat is controlled, and the seat can be locked when the comfortable position is adjusted and the pull wire is pulled.

Preferably, one end of the control rod is sleeved with a control handle, so that the control rod is humanized in design and convenient to operate.

Preferably, the elastic supporting seat is provided with a groove, so that the torsion spring is prevented from sliding out of the upper part of the symmetrical inclined blocks, and the tray of the swivel chair loses the function of controlling the force of the torsion spring.

Preferably, the locking pin is sleeved with a locking guide pipe, the locking guide pipe is fixed on the supporting seat, and the direction of the locking pin is controlled to enable the locking pin to move in one direction and not slide out.

Preferably, the first rivet is sleeved with a spring sheath, the torsion spring is sleeved on the spring sheath, and the bushing is sleeved on the outer side of the torsion spring to protect the torsion spring and reduce the loss of the torsion spring.

Preferably, the pressure rising and reducing plate is fixed on the control rod through an automatic screw, and the pressure rising and reducing plate is prevented from being randomly and randomly moved on the rod to cause damage to the lifting function.

Compared with the prior art, the beneficial effects of the utility model are that rational in infrastructure, spare part is arranged compactly, shared small, and adjustable torsion spring power has solved technical problem such as inconvenient, the structure is complicated of operation.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the back structure of the utility model during adjusting the torsional spring force;

FIG. 3 is a schematic view of the side structure of the present invention when adjusting the torsional spring force;

FIG. 4 is a schematic view of the back structure of the utility model when the torsional spring force is increased;

fig. 5 is a schematic side view of the torsion spring according to the present invention.

Parts, positions and numbers in the drawings: the device comprises a fixing plate 1, a bottom plate 2, a gear plate 3, a taper pipe 4, a first rivet 5, a second rivet 6, a torsion spring 7, a control rod 8, a lifting pressing plate 9, a locking adjusting piece 10, a clamp spring 11, an elastic supporting seat 12, a locking torsion spring 13, a locking screw 14, an elastic block 15, a locking pin 16, a control handle 17, a locking guide pipe 18, a spring sheath 19, a bushing 20, an elastic adjusting knob 21, an automatic screw 22 and a supporting seat 23.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

A swivel chair tray for adjusting torsional spring force by a knob comprises a fixing plate 1, wherein a taper pipe 4 is embedded in the middle of the fixing plate 1, a rivet I5 and a rivet II 6 are penetrated through the fixing plate 1, a spring sheath 19 is sleeved on the rivet I5, a torsional spring 7 is sleeved on the spring sheath 19, a bushing 20 is sleeved on the outer side of the torsional spring 7, a bottom plate 2 is sleeved on the rivet II 6, a gear plate 3 is fixed in front of the bottom plate 2, a control rod 8 is penetrated through at least one side of the fixing plate 1, one end of the control rod 8 is sleeved with a control handle 17, a pressure-increasing and-decreasing plate 9, a locking adjusting piece 10 and a snap spring 11 are sequentially sleeved on the control rod 8, an elastic adjusting knob 21 is fixed on the fixing plate 1, an elastic supporting seat 12 is fixed on the fixing plate, one end of the torsional spring 7 is positioned in a groove of the elastic supporting seat 12, one end of a locking torsional spring 13 is penetrated through the, the other end of the locking torsion spring 13 is connected with a locking pin 16, the locking pin 16 is sleeved with a locking guide pipe 18, and the locking guide pipe 18 is fixed on a support seat 23. When the seat locking device is used, the control rod 8 is rotated to drive the pressure rising and reducing plate 9 on the control rod 8 to turn over, the air valve is opened or closed, the lifting of the swivel chair tray can be realized, meanwhile, the control rod 8 is pulled to drive the locking torsion spring 13, and the locking pin 16 moves back and forth in the locking guide pipe 18 to realize the seat locking function. The elastic force adjusting knob 21 is rotated to drive the elastic force supporting seat 12 fixed thereon to move together. The elastic supporting seat 12 moves upwards to push one end of the torsion spring 7 in the groove of the elastic supporting seat 12 upwards, and the torsion spring force is increased as shown in the third drawing and the fourth drawing; the elastic supporting seat 12 moves downwards, one end of the torsion spring 7 in the groove of the elastic supporting seat 12 moves downwards, and the torsion spring force is reduced, as shown in a figure I and a figure II, so that the adjustment of the back and forth force is realized.

While the preferred embodiments of the present invention have been illustrated in detail in the accompanying drawings, the invention is not limited to the embodiments, and various changes can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a swivel chair tray of torsional spring power is adjusted to knob, includes fixed plate (1), its characterized in that: the middle of the fixing plate (1) is embedded with a taper pipe (4), the fixing plate (1) is penetrated with a first rivet (5) and a second rivet (6), the first rivet (5) is sleeved with a torsion spring (7), the second rivet (6) is sleeved with a bottom plate (2), a gear plate (3) is fixed in front of the bottom plate (2), an elastic adjusting knob (21) is fixed on the fixing plate (1), an elastic supporting seat (12) is fixed on the elastic adjusting knob, and one end of the torsion spring (7) is located above the elastic supporting seat (12).

2. A swivel chair tray for adjusting torsion spring force by a knob according to claim 1, wherein: a control rod (8) penetrates through one side of the fixed plate (1), and a pressure increasing and reducing plate (9), a locking adjusting piece (10) and a clamp spring (11) are sequentially sleeved on the control rod (8).

3. A swivel chair tray for adjusting a torsion spring force by a knob according to claim 1 or 2, wherein: one end of a locking torsion spring (13) penetrates through the locking adjusting piece (10), the same end of the locking torsion spring (13) is sleeved on a locking screw (14), the locking screw (14) fixes an elastic block (15) on the fixing plate (1), and the other end of the locking torsion spring (13) is connected with a locking pin (16).

4. A swivel chair tray for adjusting torsion spring force by a knob according to claim 1, wherein: the locking pin (16) is sleeved with a locking guide pipe (18), and the locking guide pipe (18) is fixed on the supporting seat (23).

5. A swivel chair tray for adjusting a torsion spring force by a knob according to claim 1 or 2, wherein: a spring sheath (19) is sleeved on the rivet I (5), a torsion spring (7) is sleeved on the spring sheath (19), and a bushing (20) is sleeved on the outer side of the torsion spring (7).

6. A swivel chair tray for adjusting torsion spring force by a knob according to claim 3, wherein: the elastic supporting seat (12) is provided with a groove which is matched with the shape of one end of the torsion spring (7).

7. A swivel chair tray for adjusting torsion spring force by a knob according to claim 4, wherein: one end of the control rod (8) is sleeved with a spring sheath of a control handle (17).

8. A swivel chair tray for adjusting torsion spring force by a knob according to claim 5, wherein: the pressure rising and reducing plate (9) is fixed on the control rod (8) through an automatic screw (22).