Office chair

Abstract

The utility model discloses an office chair which comprises a seat cushion, armrests detachably arranged on two sides of the seat cushion, a backrest detachably arranged on the back of the seat cushion, a waist cushion detachably arranged at the lower end of the front side of the backrest, a headrest detachably arranged at the upper end of the backrest and a bracket assembly detachably arranged at the bottom of the seat cushion, a mounting frame used for connecting the backrest and the seat cushion is arranged on the rear side of the seat cushion, the mounting frame and the waist cushion are detachably connected through a clamping assembly, the clamping assembly comprises a splicing block arranged on the back face of the waist cushion, and a fixing block corresponding to the splicing block is arranged on the front side of the mounting frame; splicing protrusions are arranged on the edges of the two sides of the fixing block. According to the office chair, the waist cushion is detachably arranged at the lower end of the front side of the backrest through the clamping assembly, installation is convenient and fast, efficiency is improved, the installation frame, the seat cushion, the support assembly, the headrest and the backrest are detachably connected, the packaging size of the office chair is greatly reduced, and cavities in packaging are greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of office chairs, in particular to an office chair. Background Art

[0002] Office chairs are designed for use in office environments, aiming to provide comfort and functionality to meet the needs of long-term sitting work. Office chairs are not only suitable for office environments, but are also widely used in open staff offices, conference rooms, reading rooms, library information rooms, training classrooms, laboratories, staff dormitories, staff canteens and many other occasions.

[0003] Most of the current office chairs generally include a movable bracket, a seat cushion, a backrest, an armrest, a headrest and a lumbar pad, but they are mostly fixed by screws, or some of the components are directly integrated and not easy to disassemble. Especially for the lumbar pad, it is not only inconvenient to install, but also inconvenient to adjust the height, and the flexibility is poor. The packaging area of ​​the office chair is large, and there are many cavities in the packaging, which greatly increases the transportation cost. Therefore, it is necessary to propose an office chair to solve the above problems. Utility Model Content

[0004] The main purpose of the utility model is to provide an office chair which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an office chair, comprising a seat cushion, armrests detachably arranged on both sides of the seat cushion, a backrest detachably arranged on the back of the seat cushion, a waist pad detachably arranged on the lower end of the front side of the backrest, a headrest detachably arranged on the upper end of the backrest, and a bracket assembly detachably arranged on the bottom of the seat cushion;

[0006] A mounting frame for connecting the backrest and the seat cushion is provided on the rear side of the seat cushion, and the mounting frame is detachably connected to the lumbar pad via a clamping assembly, and the clamping assembly includes a splicing block provided on the back of the lumbar pad, and a fixing block corresponding to the splicing block is provided on the front side of the mounting frame, and splicing protrusions are provided on both side edges of the fixing block, and the splicing protrusions have a certain taper, and splicing grooves for plugging in the splicing protrusions and matching with the splicing protrusions are provided on the inner sides of both ends of the splicing block, a clamping block is provided on the back of the splicing block, and a clamping slot for clamping the clamping block is provided on the lower edge of the fixing block.

[0007] Preferably, an adjustment component is provided between the fixing block and the mounting bracket, the adjustment component includes an adjustment slot provided on the front side of the mounting bracket, a limiting step is evenly provided on the inner side of the adjusting slot along the height direction, the rear end of the fixing block is slidably matched with the adjustment slot, a second groove is provided at the upper end of the back side of the fixing block, and a first groove is provided at the lower end, a claw is rotatably connected to the inner side of the first groove through a pin shaft, a tooth is provided at the lower end of the claw which is engaged with the limiting step, a matching block is movably provided between the second groove and the inner side of the adjusting slot, a convex strip is provided on one side of the lower end of the matching block, the front side of the upper end of the claw is an inclined surface, and a second groove which is engaged with the convex strip is provided at the lower end of the inclined surface.

[0008] Preferably, a limiting strip for blocking the matching block is provided on the inner side of the adjustment groove at the upper end of the limiting step.

[0009] Preferably, sliding bars are symmetrically arranged on both side edges of the rear end of the fixing block, sliding grooves adapted to the sliding bars are symmetrically arranged on both sides of the inner cavity of the adjustment groove, and the sliding guide of the sliding bar is connected to the inner side of the sliding groove.

[0010] Preferably, the bracket assembly includes a mounting chassis fixed to the bottom of the seat cushion by screws, the bottom of the mounting chassis is connected to a five-star foot via a cylinder, a handle for opening and closing the cylinder valve is provided on the mounting chassis, and rollers are evenly arranged on the bottom of the five-star foot.

[0011] Preferably, a slot is provided at the lower end of the mounting frame, an insert strip that is plugged into the slot is provided at one end of the mounting chassis, and the mounting chassis is plugged into the slot on the mounting frame through the insert strip and then fixed and locked by screws.

[0012] Preferably, one end of the armrest is fixed to the two side edges of the mounting frame by screws, a positioning protrusion is provided on the side of one end of the armrest, and a positioning groove for inserting the positioning protrusion is provided on the side of the mounting frame.

[0013] Preferably, the backrest is fixed to the upper end of the mounting frame by screws;

[0014] The lower end of the headrest is provided with a first slot which is engaged with the upper end of the backrest, and is fixed and locked by screws after the engagement.

[0015] Compared with the prior art, the utility model provides an office chair with the following beneficial effects:

[0016] The lumbar pad of the office chair is detachably arranged at the front lower end of the backrest through a snap-on assembly, so the installation is convenient and quick, and the efficiency is improved. Moreover, the mounting frame, the seat cushion, the bracket assembly, the headrest and the backrest are all detachably connected, so that the packaging volume of the office chair is greatly reduced, the cavity in the packaging is greatly reduced, space is saved, and the transportation cost is reduced.

[0017] The first card slot of the office chair facilitates the positioning of the headrest and the backrest, the arrangement of the slot and the insert strip facilitates the positioning of the mounting frame and the mounting chassis, and the arrangement of the positioning protrusion and the positioning slot facilitates the positioning of the armrest and the mounting frame, thereby facilitating the installation of screws.

[0018] The office chair can adjust the height of the waist pad through the arranged adjustment component, is easy to operate, is easy to adapt to users of different body shapes, and has increased adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the utility model in a disassembled state;

[0021] Figure 3 It is a schematic diagram of the structure of the utility model with the mounting chassis and the mounting frame disassembled;

[0022] Figure 4 This is a schematic diagram of the structure of the handrail and the mounting frame of the utility model in a disassembled state;

[0023] Figure 5 This is a schematic diagram of the structure of the utility model with the headrest and backrest disassembled;

[0024] Figure 6 This is a schematic diagram of the structure of the utility model in which the waist pad and the mounting frame are disassembled;

[0025] Figure 7 This is a schematic structural diagram of the waist pad of the utility model from another perspective;

[0026] Figure 8 This is a schematic diagram of the structure of the utility model in which the fixing block and the mounting frame are disassembled;

[0027] Fig. 9 It is a schematic diagram of the structure of the inner side of the adjustment slot of the utility model;

[0028] Fig.10 It is a structural schematic diagram of the utility model in which the clamping claw, the matching block and the fixing block are separated.

[0029] In the figure: 1. seat cushion; 2. backrest; 3. headrest; 4. lumbar pad; 5. armrest; 6. five-star foot; 7. roller; 8. mounting chassis; 9. mounting frame; 10. handle; 11. cylinder; 12. insert; 13. slot; 14. positioning groove; 15. positioning protrusion; 16. first slot; 17. fixing block; 18. splicing block; 19. block; 20. splicing slot; 21. adjustment slot; 22. limiting step; 23. claw; 24. tooth; 25. second slot; 26. matching block; 27. convex strip; 28. slide strip; 29. ​​first groove; 30. second groove; 31. limiting strip; 32. bayonet; 33. splicing protrusion. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] like Figure 1-10 As shown, an office chair comprises a seat cushion 1, armrests 5 detachably arranged on both sides of the seat cushion 1, a backrest 2 detachably arranged on the back of the seat cushion 1, a waist pad 4 detachably arranged on the lower end of the front side of the backrest 2, a headrest 3 detachably arranged on the upper end of the backrest 2, and a bracket assembly detachably arranged at the bottom of the seat cushion 1, the bracket assembly comprises a mounting chassis 8 fixed to the bottom of the seat cushion 1 by screws, the bottom of the mounting chassis 8 is connected to a five-star foot 6 through a cylinder 11, a handle 10 for opening and closing the valve of the cylinder 11 is arranged on the mounting chassis 8, and rollers 7 are evenly arranged at the bottom of the five-star foot 6;

[0032] The rear side of the seat cushion 1 is provided with a mounting frame 9 for connecting the backrest 2 and the seat cushion 1, and the mounting frame 9 is detachably connected to the lumbar pad 4 through a snap-on assembly, and the snap-on assembly includes a splicing block 18 arranged on the back of the lumbar pad 4, and the front side of the mounting frame 9 is provided with a fixing block 17 corresponding to the splicing block 18, and the two side edges of the fixing block 17 are provided with splicing protrusions 33, and the splicing protrusions 33 have a certain taper, and the inner sides of the two ends of the splicing block 18 are provided with splicing grooves 20 for plugging in the splicing protrusions 33 and matching with the splicing protrusions 33, and a snap block 19 is provided on the back of the splicing block 18, and a snap-on socket 32 ​​for snapping the snap block 19 is provided on the lower edge of the fixing block 17.

[0033] An adjustment component is provided between the fixed block 17 and the mounting frame 9, and the adjustment component includes an adjustment slot 21 provided on the front of the mounting frame 9, and a limited position step 22 is evenly provided on the inner side of the adjustment slot 21 along the height direction. The rear end of the fixed block 17 is slidably matched with the adjustment slot 21, and the two side edges of the rear end of the fixed block 17 are symmetrically provided with slide bars 28, and the two sides of the inner cavity of the adjustment slot 21 are symmetrically provided with slide grooves adapted to the slide bars 28, and the slide bars 28 are slidably guided and connected to the inner side of the slide groove, and the upper end of the back side of the fixed block 17 is provided with a second groove 30, and the lower end is provided with A first groove 29, the inner side of which is rotatably connected with a claw 23 via a pin shaft, a lower end of the claw 23 is provided with a latching tooth 24 which is engaged with the limiting step 22, a matching block 26 is movably provided between the second groove 30 and the inner side of the adjusting groove 21, a limiting strip 31 for blocking the matching block 26 is provided at the upper end of the limiting step 22 on the inner side of the adjusting groove 21, a convex strip 27 is provided on one side of the lower end of the matching block 26, the front side of the upper end of the claw 23 is an inclined surface, and the lower end of the inclined surface is provided with a second groove 25 which is engaged with the convex strip 27.

[0034] As a preferred embodiment, a slot 13 is provided at the lower end of the mounting frame 9, and an inserting strip 12 which is plugged into and matched with the slot 13 is provided at one end of the mounting chassis 8, and the mounting chassis 8 is plugged into the slot 13 on the mounting frame 9 through the inserting strip 12 and then fixed and locked by screws;

[0035] As a preferred embodiment, one end of the armrest 5 is fixed to the two side edges of the mounting frame 9 by screws, a positioning protrusion 15 is provided on the side of one end of the armrest 5, and a positioning groove 14 for inserting the positioning protrusion 15 is provided on the side of the mounting frame 9.

[0036] As a preferred embodiment, the backrest 2 and the upper end of the mounting frame 9 are fixed by screws;

[0037] As a preferred embodiment, the lower end of the headrest 3 is provided with a first slot 16 which is engaged with the upper end of the backrest 2 and is fixed and locked by screws after engagement.

[0038] It should be noted that the utility model is an office chair. When installing the chair, the mounting chassis 8 is fixed to the bottom of the seat cushion 1 by screws, the slot 13 on the mounting frame 9 is aligned with the inserting strip 12 and inserted, and then fixed by screws, the five-star foot 6 is fixed to the bottom of the mounting chassis 8 by the cylinder 11, the positioning protrusion 15 on the armrest 5 is aligned with the positioning groove 14 and inserted, and then fixed by screws, the backrest 2 is fixed to the upper end of the mounting frame 9 by screws, the first slot 16 at the lower end of the headrest 3 is clamped at the upper end of the backrest 2 and is locked and fixed by screws, and then the lumbar pad is fixed. The splicing block 18 on the back is aligned with the fixing block 17 and the two splicing protrusions 33 are inserted into the two splicing grooves 20 from top to bottom. When the splicing block 18 moves down to the lowest end, the clamping block 19 is clamped into the clamping hole 32 to fix the waist pad 4. When the height of the waist pad 4 needs to be adjusted, the waist pad 4 is pushed upward, thereby driving the fixing block 17 to move upward in the adjustment groove 21. The clamping teeth 24 rotate automatically under the pressure of the adjustment groove 21, and the convex strip 27 and the inclined surface of the clamping claw 23 are slidably matched. When the convex strip 27 is consistent with the second clamping groove 25, the convex strip 27 is clamped into the second clamping groove 25, and the clamping claw 23 is reset to complete the adjustment.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An office chair, characterized in that: The invention comprises a seat cushion (1), armrests (5) detachably arranged on both sides of the seat cushion (1), a backrest (2) detachably arranged on the back of the seat cushion (1), a waist pad (4) detachably arranged at the lower end of the front side of the backrest (2), a headrest (3) detachably arranged at the upper end of the backrest (2), and a bracket assembly detachably arranged at the bottom of the seat cushion (1); The bracket assembly comprises a mounting chassis (8) fixed to the bottom of the seat cushion (1) by screws, the bottom of the mounting chassis (8) being connected to a five-star foot (6) via a cylinder (11), a handle (10) for opening and closing a valve of the cylinder (11) being provided on the mounting chassis (8), and rollers (7) being evenly arranged at the bottom of the five-star foot (6); A mounting frame (9) for connecting the backrest (2) and the seat cushion (1) is arranged on the rear side of the seat cushion (1); the mounting frame (9) is detachably connected to the lumbar pad (4) via a snap-fit ​​assembly; the snap-fit ​​assembly comprises a splicing block (18) arranged on the back side of the lumbar pad (4); a fixing block (17) corresponding to the splicing block (18) is arranged on the front side of the mounting frame (9); splicing protrusions (33) are arranged on both side edges of the fixing block (17); the splicing protrusions (33) have a certain taper; splicing grooves (20) for plugging the splicing protrusions (33) and matching the splicing protrusions (33) are arranged on the inner sides of both ends of the splicing block (18); a snap-fit ​​block (19) is arranged on the back side of the splicing block (18); and a snap-fitting opening (32) for snapping the snap-fitting block (19) is arranged on the lower edge of the fixing block (17).

2. An office chair according to claim 1, characterized in that: An adjustment component is provided between the fixing block (17) and the mounting frame (9), the adjustment component comprising an adjustment slot (21) provided on the front side of the mounting frame (9), a limiting step (22) being evenly provided on the inner side of the adjustment slot (21) along the height direction, the rear end of the fixing block (17) being slidably matched with the adjustment slot (21), a second slot (30) being provided on the upper end of the back side of the fixing block (17), and a first slot (29) being provided on the lower end, a claw (23) being rotatably connected to the inner side of the first slot (29) via a pin, a tooth (24) being provided on the lower end of the claw (23) being engaged with the limiting step (22), a matching block (26) being movably provided between the second slot (30) and the inner side of the adjustment slot (21), a convex strip (27) being provided on one side of the lower end of the matching block (26), the front side of the upper end of the claw (23) being an inclined surface, and a second slot (25) being engaged with the convex strip (27) being provided on the lower end of the inclined surface.

3. An office chair according to claim 2, characterized in that: A limiting strip (31) for blocking the matching block (26) is provided on the inner side of the adjustment groove (21) at the upper end of the limiting step (22).

4. An office chair according to claim 2, characterized in that: Slide bars (28) are symmetrically arranged on both side edges of the rear end of the fixed block (17), and slide grooves adapted to the slide bars (28) are symmetrically arranged on both sides of the inner cavity of the adjustment groove (21), and the slide bars (28) are slidably guided and connected to the inner side of the slide grooves.

5. An office chair according to claim 1, characterized in that: A slot (13) is provided at the lower end of the mounting frame (9), and an insertion strip (12) that is plugged into and matches the slot (13) is provided at one end of the mounting chassis (8), and the mounting chassis (8) is plugged into the slot (13) on the mounting frame (9) via the insertion strip (12) and then fixed and locked via screws.

6. An office chair according to claim 1, characterized in that: One end of the handrail (5) is fixed to the two side edges of the mounting frame (9) by means of screws, a positioning protrusion (15) is provided on the side of one end of the handrail (5), and a positioning groove (14) for inserting the positioning protrusion (15) is provided on the side of the mounting frame (9).

7. An office chair according to claim 1, characterized in that: The backrest (2) and the upper end of the mounting frame (9) are fixed by means of screws; the lower end of the headrest (3) is provided with a first slot (16) which is engaged with the upper end of the backrest (2) and is fixed and locked by means of screws after engagement.

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