CN216293552U

CN216293552U - Office chair with backrest adjusting structure

Info

Publication number: CN216293552U
Application number: CN202122087291.0U
Authority: CN
Inventors: 章慧琦
Original assignee: Anji Shiyi Furniture Co ltd
Current assignee: Anji Shiyi Furniture Co ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2022-04-15
Anticipated expiration: 2031-09-01

Abstract

The utility model provides an office chair with a backrest adjusting structure, which relates to the field of office chairs and comprises a bottom plate, a first side plate, a second side plate, armrests, a cushion and a backrest, wherein the first side plate and the second side plate are symmetrically arranged on two sides above the bottom plate, a groove is formed in the rear end of the bottom plate, the backrest is arranged in the groove, rotating rods are arranged on two sides of the backrest, a worm wheel is arranged on the rotating rod inside the first side plate, a worm is rotatably arranged inside the first side plate below the worm wheel, one end of the worm is provided with a connecting rod, and one end of the connecting rod penetrates through the front surface of the first side plate and is provided with a hand wheel; through will be used for adjusting the back and carry out actuating mechanism worm wheel, worm, the connecting rod setting that the angle changes inside first curb plate to openly set up one and be used for driving worm pivoted hand wheel at first curb plate, the user need not to leave the seat and bow when adjusting the back and carry out the angle change and adjust, directly sits the angle that can realize adjusting the back on the cushion.

Description

Office chair with backrest adjusting structure

Technical Field

The utility model relates to the field of office chairs, in particular to an office chair with a backrest adjusting structure.

Background

The working strength of modern people is continuously increased, and more time is spent in office work, so that the requirement on the use flexibility of office chairs is higher and higher;

most of the adjusting mechanisms for adjusting the backrest of the existing office chairs with backrest adjusting mechanisms are positioned at the bottom of a cushion, and when the adjusting mechanism is used, a user needs to leave the chair and bend down to adjust the chair, and cannot adjust the chair to a proper angle at one time, so that the user often needs to adjust the chair for multiple times to reach a desired inclination angle, and the process is very troublesome; therefore, the utility model provides an office chair with a backrest adjusting structure, which is used for solving the defects in the prior art.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, an object of the present invention is to provide an office chair with a backrest adjusting structure, in which a worm wheel, a worm, and a connecting rod of a driving mechanism for adjusting the angle of a backrest are disposed inside a first side plate, and a hand wheel for driving the worm to rotate is disposed on the front surface of the first side plate, so that a user can adjust the angle of the backrest by directly sitting on a cushion without leaving a seat and bending down when adjusting the angle of the backrest, and the adjustment process is very convenient and easy to operate.

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

an office chair with a backrest adjusting structure comprises a bottom plate, a first side plate, a second side plate, armrests, a cushion and a backrest, wherein the first side plate and the second side plate are symmetrically arranged on two sides above the bottom plate, supporting legs are arranged at the bottom of the bottom plate, the cushion is movably arranged above the bottom plate between the first side plate and the second side plate, the armrests are arranged on one sides above the first side plate and the second side plate, a groove is formed in the rear end of the bottom plate, the backrest is arranged in the groove, rotating rods are arranged on two sides of the backrest, one end of each rotating rod is rotatably connected with the inside of the first side plate, the other end of each rotating rod is rotatably connected with the inside of the second side plate, a worm wheel is arranged on the rotating rod inside the first side plate, a worm is rotatably arranged inside the first side plate below the worm wheel, the worm wheel is meshed with the worm, and a connecting rod is arranged at one end of the worm, one end of the connecting rod penetrates through the front face of the first side plate and is provided with a hand wheel.

The further improvement lies in that: the backrest is characterized in that a waist support is arranged below the inner side of the backrest, connecting plates are symmetrically arranged on one side of the waist support, pin holes are formed in two sides of the backrest, and the connecting plates are connected with the pin holes through pin bolts.

The further improvement lies in that: the backrest is characterized in that a headrest is arranged above the inner side of the backrest, the upper part of one side of the headrest is hinged with the inner side of the backrest, a through groove is formed in the side wall of the backrest, an adjusting assembly is arranged in the through groove, and the adjusting assembly is connected with the lower part of one side of the headrest.

The further improvement lies in that: the adjusting component comprises a sliding block, a shifting block and a connecting rod, the sliding block is connected in the through groove in a sliding mode, the connecting rod is connected to one side of the sliding block, an adjusting groove is formed in the inner side of the backrest, one end of the connecting rod penetrates through the adjusting groove and then is connected with the lower portion of one side of the headrest, the shifting block is arranged on the sliding block, and one end of the shifting block extends out of the through groove.

The further improvement lies in that: the second curb plate is inside to be equipped with and to accomodate the groove, it articulates to accomodate groove top one side has the apron.

The further improvement lies in that: the supporting leg includes cylinder, mounting bracket and universal wheel, cylinder three sets up in the bottom plate bottom, the cylinder lower extreme is equipped with the mounting bracket, be equipped with the universal wheel on the mounting bracket, angles such as universal wheel are equipped with a plurality ofly.

The further improvement lies in that: the bottom plate symmetry is equipped with T type groove, the cushion below is equipped with the T type piece with T type groove adaptation.

The utility model has the beneficial effects that: according to the backrest angle adjusting device, the worm wheel, the worm and the connecting rod of the driving mechanism for adjusting the backrest to change the angle are arranged inside the first side plate, the hand wheel for driving the worm to rotate is arranged on the front surface of the first side plate, a user does not need to leave a seat and bend over to adjust when adjusting the backrest to change the angle, the angle of the backrest can be adjusted by directly sitting on the cushion, the angle adjustment of the backrest can be completed in the process that the back is attached to the backrest, the adjusted backrest angle is more suitable, the optimal inclination angle adjustment is realized without multiple times of adjustment, and the adjusting process is very convenient and easy to operate;

the cushion is movably arranged above the bottom plate, the cushion can be disassembled and assembled through the matching of the T-shaped block and the T-shaped groove, the flexibility is high, and certain storage operation can be carried out by utilizing the storage groove through arranging the storage groove and the cover plate on the second side plate;

through utilizing the cotter to be connected with the back lateral wall with the waist support, can avoid the waist support to take place the side phenomenon of moving in the use, can improve use comfort, and adjust the headrest through setting up adjusting part, can realize adjusting the headrest and carry out the slope of certain angle to adaptation in-service use demand.

Drawings

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

FIG. 2 is a side view of the pin hole mounting structure of the present invention;

FIG. 3 is a schematic front view of a cushion mounting structure according to the present invention;

FIG. 4 is a schematic top view of the backrest mounting structure of the present invention;

FIG. 5 is a top view of the worm mounting structure of the present invention;

FIG. 6 is a schematic front view of the storage groove structure of the present invention;

FIG. 7 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 8 is a bottom view of the worm and worm gear combination transmission of the present invention.

Wherein: 1. a base plate; 2. a first side plate; 3. a second side plate; 4. a handrail; 5. a cushion; 6. a backrest; 7. a groove; 8. rotating the rod; 9. a worm gear; 10. a worm; 11. a connecting rod; 12. a hand wheel; 13. a waist support; 14. a connecting plate; 15. a pin hole; 16. a pin; 17. a headrest; 18. a through groove; 19. a slider; 20. shifting blocks; 21. a connecting rod; 22. a receiving groove; 23. a cover plate; 24. a cylinder; 25. a mounting frame; 26. a universal wheel; 27. and a T-shaped block.

Detailed Description

In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

According to the drawings of fig. 1-8, the embodiment provides an office chair with a backrest adjusting structure, which comprises a bottom plate 1, a first side plate 2, a second side plate 3, armrests 4, a seat cushion 5 and a backrest 6, wherein the first side plate 2 and the second side plate 3 are symmetrically arranged on two sides above the bottom plate 1, the bottom of the bottom plate 1 is provided with supporting legs, the seat cushion 5 is movably arranged above the bottom plate 1 between the first side plate 2 and the second side plate 3, one side above the first side plate 2 and one side above the second side plate 3 are both provided with the armrests 4, the rear end of the bottom plate 1 is provided with a groove 7, the backrest 6 is arranged in the groove 7, two sides of the backrest 6 are provided with rotating rods 8, one end of each rotating rod 8 is rotatably connected with the inside of the first side plate 2, the other end of each rotating rod 8 is rotatably connected with the inside of the second side plate 3, a worm wheel 9 is arranged on the rotating rod 8 inside the first side plate 2, inside the rotating of 2 first curb plates of worm wheel 9 below is equipped with worm 10, worm wheel 9 meshes with worm 10, worm 10 one end is equipped with connecting rod 11, connecting rod 11 one end runs through 2 front and are equipped with hand wheel 12 of first curb plate, and when adjusting back 6 angle, drive connecting rod 11 and worm 10 through rotating hand wheel 12 and rotate, and then begin to rotate with the worm wheel of worm 10 meshing, and then drive dwang 8 and rotate, and back 6 synchronous rotation on the dwang 8 accomplishes the angle modulation.

A lumbar support 13 is arranged below the inner side of the backrest 6, connecting plates 14 are symmetrically arranged on one side of the lumbar support 13, pin holes 15 are formed in two sides of the backrest 6, the connecting plates 14 are connected with the pin holes 15 through pins 16, and when the lumbar support 13 is installed, the connecting plates 14 are fixed in the pin holes 15 through the pins 16.

The backrest is characterized in that a headrest 17 is arranged above the inner side of the backrest 6, the upper part of one side of the headrest 17 is hinged to the inner side of the backrest 6, a through groove 18 is formed in the side wall of the backrest 6, an adjusting assembly is arranged in the through groove 18, and the adjusting assembly is connected with the lower part of one side of the headrest 17.

The adjusting component comprises a sliding block 19, a shifting block 20 and a connecting rod 21, the sliding block 19 is connected in the through groove 18 in a sliding mode, the connecting rod 21 is connected on one side of the sliding block 19, an adjusting groove is formed in the inner side of the backrest 6, one end of the connecting rod 21 penetrates through the adjusting groove and then is connected with the lower portion of one side of the headrest 17, the shifting block 20 is arranged on the sliding block 19, one end of the shifting block extends out of the outer side of the through groove 18, when the headrest 17 is adjusted, the sliding block 19 slides in the through groove 18, the sliding block 19 drives the connecting rod 21 to move, and the headrest 17 moves outwards and then tilts.

The second side plate 3 is internally provided with a containing groove 22, and a cover plate 23 is hinged to one side above the containing groove 22.

The supporting leg includes cylinder 24, mounting bracket 25 and

universal wheel

26, 24 three settings of cylinder are in 1 bottom of bottom plate, 24 lower extremes of cylinder are equipped with mounting bracket 25, be equipped with universal wheel 26 on the mounting bracket 25, angles such as universal wheel 26 are equipped with a plurality ofly.

The bottom plate 1 is symmetrically provided with T-shaped grooves, and T-shaped blocks 27 matched with the T-shaped grooves are arranged below the cushion 5.

According to the utility model, the worm wheel 9, the worm 10 and the connecting rod 11 of the driving mechanism for adjusting the angle change of the backrest 6 are arranged in the first side plate 2, and the hand wheel 12 for driving the worm 10 to rotate is arranged on the front surface of the first side plate 2, so that a user can adjust the angle of the backrest 6 by directly sitting on the cushion 5 without leaving a seat and bending down to adjust when adjusting the angle change of the backrest 6, the angle adjustment of the backrest 6 can be completed in the process that the back is attached to the backrest 6, the angle of the adjusted backrest 6 is more suitable, the optimal inclination angle adjustment is realized without multiple adjustments, and the adjustment process is very convenient and easy to operate;

the cushion 5 is movably arranged above the bottom plate 1, the cushion 5 can be disassembled and assembled through the matching of the T-shaped block 27 and the T-shaped groove, the flexibility is high, and the accommodating groove 22 and the cover plate 23 are arranged on the second side plate 3, so that certain storage operation can be carried out by utilizing the accommodating groove 22;

through being connected waist brace 13 with cotter 16 and back 6 lateral wall, can avoid waist brace 13 to take place the side phenomenon of moving in the use, can improve use comfort, and adjust headrest 17 through setting up adjusting part, can realize adjusting headrest 17 and carry out the slope of certain angle to adaptation in-service use demand.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An office chair with a backrest adjusting structure is characterized in that: comprises a bottom plate (1), a first side plate (2), a second side plate (3), armrests (4), a cushion (5) and a backrest (6), wherein the first side plate (2) and the second side plate (3) are symmetrically arranged on two sides above the bottom plate (1), supporting legs are arranged at the bottom of the bottom plate (1), the cushion (5) is movably arranged above the bottom plate (1) between the first side plate (2) and the second side plate (3), the armrests (4) are arranged on one sides above the first side plate (2) and the second side plate (3), a groove (7) is arranged at the rear end of the bottom plate (1), the backrest (6) is arranged in the groove (7), rotating rods (8) are arranged on two sides of the backrest (6), one end of each rotating rod (8) is rotatably connected with the inside of the first side plate (2), and the other end of each rotating rod (8) is rotatably connected with the inside of the second side plate (3), be equipped with worm wheel (9) on inside dwang (8) of first curb plate (2), the inside rotation of first curb plate (2) of worm wheel (9) below is equipped with worm (10), worm wheel (9) and worm (10) meshing, worm (10) one end is equipped with connecting rod (11), connecting rod (11) one end runs through first curb plate (2) openly and is equipped with hand wheel (12).

2. An office chair having a backrest adjusting structure, as claimed in claim 1, wherein: the utility model discloses a chair backrest, including back (6), waist brace (13) inboard below, waist brace (13) one side symmetry is equipped with connecting plate (14), back (6) both sides are equipped with pinhole (15), connecting plate (14) are connected with pinhole (15) through cotter bolt (16).

3. An office chair having a backrest adjusting structure, as claimed in claim 1, wherein: the backrest is characterized in that a headrest (17) is arranged above the inner side of the backrest (6), the upper side of one side of the headrest (17) is hinged to the inner side of the backrest (6), a through groove (18) is formed in the side wall of the backrest (6), an adjusting component is arranged in the through groove (18), and the adjusting component is connected with the lower side of one side of the headrest (17).

4. An office chair having a backrest adjusting structure, as claimed in claim 3, wherein: adjusting part package slider (19), shifting block (20) and connecting rod (21), it has slider (19) to lead to groove (18) sliding connection, slider (19) one side is connected with connecting rod (21), back (6) inboard is equipped with the adjustment tank, connecting rod (21) one end is run through the adjustment tank after and is connected with headrest (17) one side below, shifting block (20) set up on slider (19), and one end extends and leads to the groove (18) outside.

5. An office chair having a backrest adjusting structure, as claimed in claim 1, wherein: the second side plate (3) is internally provided with a containing groove (22), and one side above the containing groove (22) is hinged with a cover plate (23).

6. An office chair having a backrest adjusting structure, as claimed in claim 1, wherein: the supporting leg includes cylinder (24), mounting bracket (25) and universal wheel (26), cylinder (24) three sets up in bottom plate (1) bottom, cylinder (24) lower extreme is equipped with mounting bracket (25), be equipped with universal wheel (26) on mounting bracket (25), angles such as universal wheel (26) are equipped with a plurality ofly.

7. An office chair having a backrest adjusting structure, as claimed in claim 1, wherein: the novel seat cushion is characterized in that T-shaped grooves are symmetrically formed in the bottom plate (1), and T-shaped blocks (27) matched with the T-shaped grooves are arranged below the seat cushion (5).