CN219895138U - Office chair convenient to adjust - Google Patents

Abstract

The utility model discloses an office chair convenient to adjust, and relates to the field of office furniture. The utility model provides an office chair convenient to adjust, including the seat support, the back of the chair and chair leg, the seat support bottom is provided with the chassis, the one end on chassis is passed through fixed axle fixed connection in the seat support, the chassis is close to the one end of seat support and wears to establish and rotate and be connected with the control lever, the control lever is provided with locking mechanical system, locking mechanical system is used for locking the seat support, the chassis is kept away from the one end rotation of seat support and is connected with the wane, the wane is connected in the back of the chair, first round pin axle and wane are worn to be equipped with at the middle part of wane and use first round pin axle as the rotation fulcrum, first round pin axle wears to locate the chassis, the wane is located the both sides of first round pin axle and wears to be equipped with second round pin axle and third round pin axle, the track groove has been seted up to the chassis, second round pin axle sliding connection is in the track groove, the wane passes through the third round pin hub connection in the seat support. The utility model has the effects of more convenient adjustment of the office chair by a user and locking the office chair at a fixed angle according to the requirement.

Description

Office chair convenient to adjust

Technical Field

The utility model relates to the field of office furniture, in particular to an office chair convenient to adjust.

Background

Office chairs are chairs specially equipped for convenience of work, and generally refer to back chairs in which a person works in a sitting posture. In order to increase the comfort of the office chair, the chair back of the office chair is usually arranged in an adjustable mode, the tilting angle of the chair back can be changed, and the user can conveniently select a proper posture.

The office chair comprises a chair back, a chair seat, a base and a swivel chair tray, wherein the inclination angle of the chair back is adjusted by the swivel chair tray. Common swivel chair tray includes devices such as chassis, wane, torsional spring, and the chassis is connected in the seat support, and the wane is connected in the back of the chair, and when the user sat on the seat support and leaned back, the wane takes place to deflect under the action of gravity, realizes leaning back of the chair, realizes the automatic reply of back of the chair under the elasticity effect of torsional spring.

For the existing office chair, a user hopes to lock the chair back at a fixed angle, so that the user can select a proper posture to have a rest for a long time, and the office chair is more convenient to use.

Disclosure of Invention

In order to facilitate the adjustment of the office chair by a user and lock the office chair at a fixed angle according to the requirement, the utility model provides the office chair which is convenient to adjust.

The office chair convenient to adjust provided by the utility model adopts the following technical scheme:

the utility model provides an office chair convenient to adjust, includes seat support, back of the chair and chair leg, the seat support bottom is provided with the chassis, the one end on chassis pass through fixed axle fixed connection in the seat support, the chassis be close to the one end of seat support wears to establish and rotate and be connected with the control lever, the control lever is provided with locking mechanical system, locking mechanical system is used for locking the seat support, the chassis is kept away from the one end of seat support is rotated and is connected with the wane, the wane connect in the back of the chair, first round pin axle just is worn to be equipped with at the middle part of wane with first round pin axle is the rotation fulcrum, first round pin axle wears to locate the chassis, the wane is located first round pin axle's both sides are worn to be equipped with second round pin axle and third round pin axle, the track groove has been seted up to the chassis, second round pin axle sliding connection in the track groove, the wane passes through the third round pin hub connection in the seat support.

Through adopting above-mentioned technical scheme, when the user sits on the seat and leans back, the wane rotates around first round pin axle, and the second round pin axle takes place to slide in the track inslot this moment, and the third round pin axle drives the seat and slides backward, and locking mechanical system is used for locking the motion of seat so that the wane can't continue the motion, and the angle of inclination of the back of the chair is fixed this moment. Through rotating the control rod, the user can lock the movement of the chair seat at any time, and then the chair back of the office chair is fixed at a corresponding angle, so that the adjustment of the user to the office chair is facilitated.

Further, the two sides of the bottom of the chair seat are connected with connecting parts, the connecting parts comprise a first connecting plate connected to the chair seat and a second connecting plate vertically connected to the first connecting plate, two ends of the fixed shaft penetrate through the second connecting plate to be connected to the chassis, and two ends of the third pin shaft penetrate through the second connecting plate to be connected to the rocker.

Through adopting above-mentioned technical scheme, the setting of connecting portion makes things convenient for the seat support to be connected with chassis, seat support and wane, drives the seat support through being connected with the second connecting plate when wane motion and moves backward, realizes the process of leaning on of whole back of the chair. The connecting strength of the seat and the chassis and the seesaw is increased through the connecting part.

Further, the both sides of chassis all are provided with the engaging lug, the engaging lug has been seted up the holding hole, the control lever wear to locate the holding hole and rotate connect in the chassis, the both ends of fixed axle connect in the engaging lug, locking mechanical system is used for locking the engaging lug.

Through adopting above-mentioned technical scheme, the engaging lug is used for connecting seat support and control lever, rotates the control lever, and locking mechanical system locks or unblock engaging lug for when unblock engaging lug, the engaging lug can rotate around the control lever and drive the seat support and move backward, and the seat support is in the unblock state, and when locking the engaging lug, the engaging lug is fixed with the control lever, and the engaging lug can't rotate around the control lever, and the seat support can't remove this moment, and the back of the chair tilt angle degree can't change.

Further, the locking mechanism comprises an external thread arranged on the control rod, the control rod is connected with the chassis through the external thread, the inner wall of the accommodating hole is provided with a groove, a boss is arranged on the periphery of the control rod, the control rod is rotated, and when the boss is pressed against the groove wall of the groove, the locking mechanism is in an unlocking state.

Through adopting above-mentioned technical scheme, control lever threaded connection is in the base, rotates the control lever, and the control lever gets into or keep away from the base for the boss slides in the recess, and when the boss butt in the cell wall of recess, the engaging lug is locked, and the engaging lug can't rotate around the control lever under the effect of no external force, realizes the locking of seat support.

Further, the rocker is connected with an elastic reset assembly, the elastic reset assembly comprises a spring, one end of the spring is connected with the first pin shaft, and the other end of the spring is connected with the fixed shaft.

Through adopting above-mentioned technical scheme, elasticity reset assembly conveniently resets the wane, when the back of the chair leans upward, and the seat support moves backward and drives the fixed axle position change, and the spring takes place to deform, and after the user got up from the seat support, the spring force effect made the seat support move forward down, and the wane resumes the normal position.

Further, the wane includes curb plate, backplate and lug, two the curb plate set up in the both sides of chassis, first round pin axle with the second round pin axle wears to locate the curb plate, the backplate connect in two the curb plate and connect in the back of the chair, the backplate set up in the seat bottom with between the chassis, two the lug is connected in two respectively the curb plate, the third round pin axle wears to locate the lug.

Through adopting above-mentioned technical scheme, the curb plate is used for connecting first round pin axle and second round pin axle and rotates, and the back of the chair is leaned back and is driven the backplate and rotate, and the third round pin axle is fixed lug and second connecting plate to the lug drives the back of the chair and moves backward, conveniently realizes whole scheme.

Further, one end of the control rod, which is far away from the chassis, is connected with a rotating handle.

By adopting the technical scheme, the rotating handle is convenient for a user to operate the control rod.

Further, the chassis is provided with a through hole, and the chair legs are arranged through the through hole and connected with the chair seat.

Through adopting above-mentioned technical scheme, the through-hole has made things convenient for the connection of chair leg and seat support.

In summary, the utility model has the following beneficial effects:

1. when a user sits on the seat and leans backwards, the seesaw rotates around the first pin shaft, the second pin shaft slides in the track groove, the third pin shaft drives the seat to slide backwards, the locking mechanism is used for locking the movement of the seat so that the seesaw cannot move continuously, and the tilting angle of the chair back is fixed. Through rotating the control rod, the user can lock the movement of the chair seat at any time, and then the chair back of the office chair is fixed at a corresponding angle, so that the adjustment of the user to the office chair is facilitated.

2. The engaging lug is used for connecting seat support and control rod, rotates the control rod, and locking mechanical system locks or unblock engaging lug for when unblock engaging lug, the engaging lug can rotate around the control rod and drive the seat support and move backward, and the seat support is in the unblock state, and when locking engaging lug, engaging lug is fixed with the control rod, and the engaging lug can't rotate around the control rod, and the seat support can't remove this moment, and the back of the chair tilt angle degree can't change.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic view of a part of an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of an embodiment of the present utility model;

fig. 4 is a schematic structural view of a chassis according to an embodiment of the present utility model.

Reference numerals illustrate: 1. a seat; 11. a chair back; 12. chair legs; 2. a connection part; 21. a first connection plate; 22. a second connecting plate; 3. a chassis; 31. a through hole; 32. a connecting lug; 33. a fixed shaft; 34. a control lever; 35. a rotating handle; 4. a seesaw; 41. a side plate; 42. a back plate; 43. lifting lugs; 5. a first pin; 51. a second pin; 52. a track groove; 53. a third pin; 54. a spring; 6. an external thread; 61. a boss; 62. an accommodation hole; 63. a groove.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-4.

The embodiment of the utility model discloses an office chair convenient to adjust. Referring to fig. 1, an office chair convenient to adjust includes a seat 1, a back 11, legs 12 and armrests, the legs are connected to the seat 1, and the armrests are located at both sides of the legs and are connected through a mounting plate at the bottom.

Referring to fig. 2, the two sides of the bottom of the chair back 11 are both provided with a connecting portion 2, the connecting portion 2 includes a first connecting plate 21 and a second connecting plate 22, the first connecting plate 21 is connected to the chair seat 1 through a bolt, the width direction of the second connecting plate 22 is perpendicular to the width direction of the first connecting plate 21, the bottom of the chair seat 1 is provided with a chassis 3, the chassis 3 is provided with a through hole 31, and the upright posts of the chair legs 12 are connected to the chair seat 1 through the through hole 31. The two sides of one end of the chassis 3 are respectively provided with a connecting lug 32, one end of each connecting lug 32 and each second connecting plate 22 are jointly penetrated with a fixed shaft 33, and the connecting lugs 32 are fixedly connected with the chair seat 1 through the fixed shafts 33, so that the linkage of the connecting lugs 32 and the chair seat 1 is realized. One end of the two connecting lugs 32 far away from the second connecting plate 22 and two sides of the chassis 3 are jointly penetrated with a control rod 34, the control rod 34 is provided with a locking mechanism, and the locking mechanism is used for locking the connecting lugs 32 so as to lock the seat 1. The control lever 34 is provided with a turning handle 35, and the turning handle 35 facilitates the user to operate the control lever 34.

The one end that link 32 was kept away from to chassis 3 rotates and is connected with wane 4, and wane 4 includes two interval parallel curb plates 41, connects backplate 42 of two curb plates 41 and connects in lug 43 of two curb plates 41, and curb plate 41 sets up in the outside of chassis 3, and backplate 42 sets up between chassis 3 and seat support 1. The middle part of the side plate 41 is rotatably penetrated with a first pin shaft 5, two ends of the first pin shaft 5 penetrate through two sides of the chassis 3 to be connected with the side plate 41, and the rocker 4 takes the first pin shaft 5 as a rotation fulcrum. Both sides of the back plate 42 are provided with track grooves 52, the side plate 41 is provided with a second pin shaft 51 in a penetrating way, and both ends of the second pin shaft 51 are connected with the track grooves 52 in a sliding way. The lifting lug 43 is penetrated with a third pin shaft 53, two ends of the third pin shaft 53 penetrate through the second connecting plate 22 to be connected with the lifting lug 43, and the back plate 42 is connected with the chair back 11. When a user sits on the seat 1 and leans backwards, the chair back 11 leans backwards to drive the seesaw 4 to rotate by taking the first pin shaft 5 as a fulcrum, the second pin shaft 51 slides in the track groove 52, and the third pin shaft 53 drives the chair back 11 to move backwards through the second connecting plate 22.

Referring to fig. 2 and 3, the end of the connecting lug 32, which is close to the chassis 3, is provided with a containing hole 62, the locking mechanism comprises external threads 6 arranged on the periphery of the control rod 34, two sides of the chassis 3 are provided with internal thread holes, the external threads 6 of the control rod 34 penetrate through the containing hole 62 and are connected with the internal thread holes in a threaded manner, the containing hole 62 is internally provided with a groove 63, the periphery of the control rod 34 is connected with a boss 61, the boss 61 is arranged on one side of the external threads 6, which is close to the rotating handle 35, the boss 61 slides in the groove 63, and the width of the boss 61 is smaller than that of the groove 63. The rotating handle 35 drives the control rod 34 to rotate, the control rod 34 is screwed into the chassis 3 through threaded connection, the boss 61 is in sliding contact with the wall of the groove 63, the connecting lug 32 is locked, the connecting lug 32 is fixedly connected with the control rod 34 at the moment, and therefore the connecting lug 32 cannot rotate around the control rod 34 to cause the chair seat 1 to be incapable of realizing backward movement, and the tilting angle of the chair back 11 is fixed at the moment; the rotating handle 35 is rotated in the opposite direction, the control rod 34 is rotated out of the chassis 3, the boss 61 is located in the center of the groove 63, the control rod 34 cannot lock the connecting lug 32, the connecting lug 32 can rotate around the control rod 34, the chair back 11 is reclined, the rocker 4 rotates, the chair back 11 can move backwards, and the adjustment of the tilting angle of the chair back 11 can be achieved. By rotating the handle 35 in the opposite direction, locking or unlocking of the adjustment of the seat back 11 can be achieved, which is more convenient for the user to fix the seat back 11 in place.

Referring to fig. 4, in order to facilitate the return of the seat back 11, the rocker 4 is provided with an elastic return member, which is a spring 54, one end of the spring 54 is fixed to the first pin 5, and the other end of the spring 54 is fixed to the fixed shaft 33. When the gravity of the user is applied to the chair back 11 to cause the chair back 11 to recline, the chair back 11 drives the fixed shaft 33 to move backwards, so that the lengths of the first pin shaft 5 and the fixed shaft 33 are changed, the length of the spring 54 is changed, after the user lifts up, the pressure born by the chair back 11 disappears, and the elastic force of the spring 54 causes the fixed shaft 33 to drive the chair seat 1 to move forwards until the spring 54 recovers to the original length.

The embodiment of the utility model provides an office chair convenient to adjust, which comprises the following implementation principles: the user sits on the seat 1, the rotating handle 35 drives the control rod 34 to rotate, the control rod 34 rotates out of the chassis 3, the boss 61 is positioned in the middle of the groove 63 so that the connecting lug 32 can rotate around the control rod 34, the user pushes the seat 1 to move backwards, the rocker 4 rotates around the first pin shaft 5, the second pin shaft 51 slides in the track groove 52, the third pin shaft 53 drives the seat 1 to move backwards, the fixed shaft 33 moves backwards along with the seat 1, the length of the spring 54 changes, after the user plays a role, the spring 54 elastic force drives the fixed shaft 33 to drive the seat 1 to move forwards, the chair back 11 returns to the original position, when the chair back 11 is adjusted to a proper angle, the rotating handle 35 is rotated reversely, the control rod 34 rotates into the chassis 3, the boss 61 is abutted against the groove wall of the groove 63, and at the moment, the connecting lug 32 and the seat 1 are locked together, so that the angle of the chair back 11 is fixed.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. An office chair convenient to adjust, includes seat (1), back of the chair (11) and chair leg (12), its characterized in that: the chair comprises a chair seat (1), wherein a chassis (3) is arranged at the bottom of the chair seat (1), one end of the chassis (3) is fixedly connected with the chair seat (1) through a fixing shaft (33), the chassis (3) is close to one end of the chair seat (1) and is penetrated and rotationally connected with a control rod (34), the control rod (34) is provided with a locking mechanism, the locking mechanism is used for locking the chair seat (1), the chassis (3) is far away from one end of the chair seat (1) and is rotationally connected with a rocker (4), the rocker (4) is connected with a chair back (11), a first pin shaft (5) is penetrated in the middle of the rocker (4) and is used as a rotation pivot, the first pin shaft (5) is penetrated and arranged on the chassis (3), the rocker (4) is located on two sides of the first pin shaft (5) and is connected with a second pin shaft (51) and a third pin shaft (53), the chassis (3) is provided with a track groove (52), and the second rocker (4) is connected with the track groove (52) through the third pin shaft (53).

2. An office chair for facilitating adjustment according to claim 1, wherein: both sides of seat support (1) bottom all are connected with connecting portion (2), connecting portion (2) including connect in first connecting plate (21) of seat support (1) and perpendicular connect in second connecting plate (22) of first connecting plate (21), the both ends of fixed axle (33) pass second connecting plate (22) connect in chassis (3), the both ends of third round pin axle (53) pass second connecting plate (22) connect in wane (4).

3. An office chair for facilitating adjustment according to claim 2, wherein: both sides of chassis (3) all are provided with engaging lug (32), engaging lug (32) have seted up accommodation hole (62), control lever (34) wear to locate accommodation hole (62) and rotate connect in chassis (3), the both ends of fixed axle (33) connect in engaging lug (32), locking mechanical system is used for locking engaging lug (32).

4. An office chair for facilitating adjustment according to claim 3, wherein: the locking mechanism comprises an external thread (6) arranged on the control rod (34), the control rod (34) is connected with the chassis (3) through the external thread (6) in a threaded mode, a groove (63) is formed in the inner wall of the accommodating hole (62), a boss (61) is arranged on the periphery of the control rod (34), the control rod (34) is rotated, and when the boss (61) is pressed against the groove wall of the groove (63), the locking mechanism is in an unlocking state.

5. An office chair for facilitating adjustment according to claim 1, wherein: the rocker (4) is connected with an elastic reset assembly, the elastic reset assembly comprises a spring (54), one end of the spring (54) is connected to the first pin shaft (5), and the other end of the spring (54) is connected to the fixed shaft (33).

6. An office chair for facilitating adjustment according to claim 2, wherein: the rocker (4) comprises side plates (41), a back plate (42) and lifting lugs (43), wherein the two side plates (41) are arranged on two sides of the chassis (3), the first pin shaft (5) and the second pin shaft (51) penetrate through the side plates (41), the back plate (42) is connected with the two side plates (41) and connected with the chair back (11), the back plate (42) is arranged between the bottom of the chair seat (1) and the chassis (3), the two lifting lugs (43) are respectively connected with the two side plates (41), and the third pin shaft (53) penetrates through the lifting lugs (43).

7. An office chair for facilitating adjustment according to claim 2, wherein: one end of the control rod (34) far away from the chassis (3) is connected with a rotating handle (35).

8. An office chair for facilitating adjustment according to claim 2, wherein: the chassis (3) is provided with a through hole (31), and the chair legs (12) are arranged through the through hole (31) in a penetrating mode and connected with the chair seat (1).