CN213344977U

CN213344977U - Office chair with adjustable chair back

Info

Publication number: CN213344977U
Application number: CN202022649460.0U
Authority: CN
Inventors: 朱晓雄
Original assignee: Anji Aojia Household Products Co ltd
Current assignee: Anji Aojia Household Products Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-06-04
Anticipated expiration: 2030-11-16

Abstract

The utility model discloses an office chair with adjustable back of chair, the on-line screen storage device comprises a base, the top fixed connection mount pad of base, the top fixed connection bracing piece of mount pad, the top fixed connection bedplate of bracing piece, the notch has been seted up to the one end of bedplate, the inside swing joint of notch has the bull stick, the top fixed connection back of the chair of bull stick, the inside of bull stick is connected with the movable rod through slide mechanism, the inside fixed connection motor of the back of the chair, the output shaft fixedly connected with pivot of motor, the surface symmetric connection of pivot has drive mechanism, drive mechanism's top fixedly connected with threaded rod, the surface threaded connection screw thread slider of threaded rod, fixedly connected with fly leaf between the screw slider, the top fixedly connected with headrest of fly leaf, beneficial effect: the angle of the chair back can be adjusted, and the position of the headrest can be conveniently adjusted by users with different heights.

Description

Office chair with adjustable chair back

Technical Field

The utility model relates to an office chair field particularly, relates to an office chair with adjustable back of the chair.

Background

The office chair is characterized in that the office chair comprises a staff chair, a conference chair, a visitor chair and a training chair, and is a backrest chair for a person to sit on when working on a desktop in a sitting posture state in a narrow sense.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

The technical task of the utility model is to above not enough, provide an office chair with adjustable the back of the chair, solve the problem that the background art provided.

In order to achieve the above object, the utility model provides a following technical scheme: an office chair with an adjustable chair back comprises a base, wherein the top end of the base is fixedly connected with an installation seat, the top end of the installation seat is fixedly connected with a supporting rod, the top end of the supporting rod is fixedly connected with a seat plate, one end of the seat plate is provided with a notch, the inside of the notch is movably connected with a rotating rod, the top end of the rotating rod is fixedly connected with the chair back, the inside of the rotating rod is connected with a movable rod through a sliding mechanism, one end of the movable rod penetrates through the notch and is fixedly connected with a rotating handle, the surface of the movable rod is sleeved with a fixed sleeve, a fixing mechanism is arranged between the fixed sleeve and the movable rod, the inside of the chair back is fixedly connected with a motor, an output shaft of the motor is fixedly connected with a rotating shaft, the surface of the rotating shaft is symmetrically connected with a transmission mechanism, fixedly connected with fly leaf between the screw slider, the top of fly leaf is run through back of the chair and fixedly connected with headrest, one side fixedly connected with waist pillow of the back of the chair.

Further, slide mechanism includes spout and slider, the spout has all been seted up to the both sides inner wall of bull stick, the inside sliding connection of spout has the slider, the slider with movable rod fixed connection.

Furthermore, the fixing mechanism comprises fixed teeth and a convex block, the fixed teeth are fixedly connected to the inner wall of the fixing sleeve, the convex block is fixedly connected to the surface of the movable rod, and the convex block is meshed with the fixed teeth.

Furthermore, the transmission mechanism comprises a first bevel gear and a second bevel gear, the surface of the rotating shaft is symmetrically connected with the first bevel gear, the top end of the first bevel gear is meshed with the second bevel gear, and the second bevel gear is fixedly connected with the threaded rod.

Furthermore, a soft cushion is fixedly connected to the surface of the seat plate.

Furthermore, handles are fixedly connected to two sides of the seat board.

Furthermore, the bottom of the base is fixedly connected with a plurality of universal wheels.

The utility model has the advantages that:

1. this office chair with adjustable back of the chair through setting up notch, bull stick, the back of the chair, movable rod, turning handle, fixed cover, motor, pivot, threaded rod, screw slider, fly leaf and drive mechanism, can rotate the turning handle for the bull stick drives the back of the chair and rotates, thereby can adjust the angle of the back of the chair, under the drive of motor, can make the fly leaf stretch out or retract, thereby can make things convenient for the user of different heights to adjust by oneself.

2. Through setting up slide mechanism, not only can be convenient for the movable rod and remove in the bull stick is inside, also can drive the bull stick when the movable rod rotates simultaneously and rotate.

3. The fixing mechanism is arranged, so that the rotating rod can be limited from rotating any more, and when the angle of the chair back is adjusted well, the rotating handle can be pushed inwards, so that the convex block is meshed with the fixed teeth, and the chair back can be fixed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of an office chair with an adjustable chair back according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a transmission mechanism in an office chair with an adjustable chair back according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a sliding mechanism in an office chair with an adjustable chair back according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a fixing mechanism in an office chair with an adjustable chair back according to an embodiment of the present invention.

Reference numerals:

1. a base; 2. a mounting seat; 3. a support bar; 4. a seat plate; 5. a notch; 6. a rotating rod; 7. a chair back; 8. a movable rod; 9. a handle is rotated; 10. fixing a sleeve; 11. a motor; 12. a rotating shaft; 13. a threaded rod; 14. a threaded slider; 15. a movable plate; 16. a headrest; 17. waist pillow; 18. a chute; 19. a slider; 20. fixing teeth; 21. a bump; 22. a first bevel gear; 23. a second bevel gear; 24. a soft cushion; 25. a handle; 26. a universal wheel.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

The first embodiment is as follows:

referring to fig. 1-4, an office chair with an adjustable chair back according to an embodiment of the present invention includes a base 1, a mounting base 2 is fixedly connected to a top end of the base 1, a supporting rod 3 is fixedly connected to a top end of the mounting base 2, a seat plate 4 is fixedly connected to a top end of the supporting rod 3, a notch 5 is formed at one end of the seat plate 4, a rotating rod 6 is movably connected inside the notch 5, a chair back 7 is fixedly connected to a top end of the rotating rod 6, a movable rod 8 is connected inside the rotating rod 6 through a sliding mechanism, one end of the movable rod 8 penetrates through the notch 5 and is fixedly connected to a rotating handle 9, a fixed sleeve 10 is sleeved on a surface of the movable rod 8, a fixed mechanism is arranged between the fixed sleeve 10 and the movable rod 8, a motor 11 is fixedly connected inside the chair back 7, the motor 11 is a positive and negative motor and, output shaft fixedly connected with pivot 12 of motor 11, the surperficial symmetric connection of pivot 12 has drive mechanism, drive mechanism's top fixedly connected with threaded rod 13, the surperficial threaded connection of threaded rod 13 has screw thread slider 14, fixedly connected with fly leaf 15 between screw thread slider 14, the top of fly leaf 15 is run through back of the chair 7 and fixedly connected with headrest 16, one side fixedly connected with waist pillow 17 of back of the chair 7.

Through the above technical scheme of the utility model, can rotate the turning handle 9 for the bull stick 6 drives the back of the chair 7 and rotates, thereby can adjust the angle of the back of the chair 7, under the drive of motor 11, can make fly leaf 15 stretch out or retract, thereby can make things convenient for the user of different heights to adjust by oneself.

Example two:

referring to fig. 1-4, for the sliding mechanism, the sliding mechanism includes a sliding groove 18 and a sliding block 19, the sliding groove 18 is formed on both inner walls of the rotating rod 6, the sliding block 19 is slidably connected inside the sliding groove 18, the sliding block 19 is fixedly connected with the movable rod 8, for the fixing mechanism, the fixing mechanism includes a fixed tooth 20 and a projection 21, the fixed tooth 20 is fixedly connected with the inner wall of the fixed sleeve 10, the projection 21 is fixedly connected with the surface of the movable rod 8, the projection 21 is engaged with the fixed tooth 20, for the transmission mechanism, the transmission mechanism includes a first bevel gear 22 and a second bevel gear 23, the first bevel gear 22 is symmetrically connected with the surface of the rotating shaft 12, the second bevel gear 23 is engaged with the top end of the first bevel gear 22, the second bevel gear 23 is fixedly connected with the threaded rod 13, for the seat plate 4, the surface of the seat plate 4 is fixedly connected with a soft cushion 24, for the seat plate 4, both sides of the seat plate 4 are fixedly connected with handles 25, and for the base 1, the bottom of the base 1 is fixedly connected with a plurality of universal wheels 26.

Through the above technical scheme of the utility model, set up fixed establishment, can restrict bull stick 6 and no longer rotate, when the angle modulation of the back of the chair 7 is good, can promote turning handle 9 inwards to make lug 21 and fixed tooth 20 mesh, thereby can be fixed the back of the chair 7

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

In practical application, when a user sits on the seat plate 4 and needs to adjust the angle of the chair back 7, the user needs to pull the rotating handle 9 outwards, the rotating handle 9 drives the movable rod 8 to move outwards, so that the convex block 21 is separated from the fixed teeth 20, then the rotating handle 9 is rotated, the rotating handle 9 drives the movable rod 8 to rotate, the movable rod 8 drives the rotating rod 6 to rotate through the sliding mechanism, so that the chair back 7 can be driven to rotate, so as to adjust the angle of the chair back 7, after the angle of the chair back 7 is adjusted, the rotating handle 9 is pushed inwards, so that the convex block 21 is meshed with the fixed teeth 20 again, so that the rotating rod 6 stops rotating, when the user needs to adjust the position of the headrest, the motor 11 is started, the motor 11 drives the rotating shaft 12 to rotate, the rotating shaft 12 drives the first bevel gear 22 to rotate, the first bevel gear 22 drives the second bevel gear 23 to rotate through meshing, so that the threaded rod 13, so that the movable plate 15 can be adjusted to move up and down, and thus the position of the headrest 16 can be adjusted.

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

Claims

1. The office chair with the adjustable chair back is characterized by comprising a base (1), wherein the top end of the base (1) is fixedly connected with an installation seat (2), the top end of the installation seat (2) is fixedly connected with a supporting rod (3), the top end of the supporting rod (3) is fixedly connected with a seat plate (4), one end of the seat plate (4) is provided with a notch (5), the inside of the notch (5) is movably connected with a rotating rod (6), the top end of the rotating rod (6) is fixedly connected with a chair back (7), the inside of the rotating rod (6) is connected with a movable rod (8) through a sliding mechanism, one end of the movable rod (8) penetrates through the notch (5) and is fixedly connected with a rotating handle (9), the surface of the movable rod (8) is sleeved with a fixed sleeve (10), and a fixing mechanism is arranged between the fixed sleeve (10) and the movable rod, the utility model discloses a safe and convenient chair, including the inside fixedly connected with motor (11) of the back of the chair (7), the output shaft fixedly connected with pivot (12) of motor (11), the surface symmetric connection of pivot (12) has drive mechanism, drive mechanism's top fixedly connected with threaded rod (13), the surface threaded connection of threaded rod (13) has screw thread slider (14), fixedly connected with fly leaf (15) between screw thread slider (14), the top of fly leaf (15) is run through the back of the chair (7) and fixedly connected with headrest (16), one side fixedly connected with waist pillow (17) of the back of the chair (7).

2. The office chair with the adjustable chair back as claimed in claim 1, wherein the sliding mechanism comprises a sliding groove (18) and a sliding block (19), the sliding groove (18) is formed in each of the inner walls of the two sides of the rotating rod (6), the sliding block (19) is connected to the inside of the sliding groove (18) in a sliding manner, and the sliding block (19) is fixedly connected with the movable rod (8).

3. The office chair with the adjustable chair back as claimed in claim 1, wherein the fixing mechanism comprises a fixed tooth (20) and a projection (21), the fixed tooth (20) is fixedly connected to the inner wall of the fixing sleeve (10), the projection (21) is fixedly connected to the surface of the movable rod (8), and the projection (21) is meshed with the fixed tooth (20).

4. The office chair with the adjustable chair back as claimed in claim 1, wherein the transmission mechanism comprises a first bevel gear (22) and a second bevel gear (23), the first bevel gear (22) is symmetrically connected to the surface of the rotating shaft (12), the second bevel gear (23) is meshed with the top end of the first bevel gear (22), and the second bevel gear (23) is fixedly connected with the threaded rod (13).

5. A chair back adjustable office chair as claimed in claim 1, wherein a soft pad (24) is fixedly attached to the surface of the seat plate (4).

6. An office chair with adjustable back according to claim 5, characterized in that handles (25) are fixedly connected to both sides of the seat plate (4).

7. An office chair with adjustable back according to claim 1, characterized in that a plurality of universal wheels (26) are fixedly connected to the bottom of the base (1).