Office chair

Abstract

The utility model discloses an office chair which comprises a chair seat (1), a chair back (2), a headrest (3), two armrests and a base, the chair is characterized in that the chair seat (1) comprises a chair seat inner frame (4), a chair seat filler (5) and two chair seat supporting blocks (6), the headrest (3) comprises a headrest frame (10) and a headrest filler (11), and the headrest filler (11) and the two chair back supporting blocks (9) are connected into a whole. The two chair back supporting blocks (9) are wrapped outside the two side surfaces of the chair back inner frame (7), and the headrest filler (11) is wrapped outside the headrest frame (10). According to the office chair, the headrest and the chair back are of an integrated structure, and meanwhile, the headrest filling block and the filling blocks on the two sides of the chair back are integrated, so that the positioning performance of the filling blocks and the internal frame is better, and meanwhile, the chair seat filler, the chair back filler and the angle adjuster are positioned at the same time.

Description

Technical Field

[0001] This utility model relates to the field of office and home furniture technology, specifically an office chair. Background Technology

[0002] An office chair is a type of seating specifically designed for office environments, typically used in offices, studies, or settings where prolonged desk work is required. Its core functions are to provide comfort, support, and flexibility to accommodate the demands of sitting for extended periods. Office chairs are adjustable in height, armrests, and backrest angles to fit different body types and working postures. They may also feature lumbar support, breathable mesh backrests or padding, and headrests to reduce fatigue from prolonged sitting. Currently, most office chairs use padding for support, such as in the seat, backrest, and headrest. However, precisely positioning the padding within the frame of each part presents significant challenges for the industry. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an office chair that integrates the headrest and the backrest into one structure, and integrates the headrest filling block with the filling blocks on both sides of the backrest into one, so as to improve the positioning of the filling block and the internal frame, and simultaneously position the seat filling and the backrest filling with the angle adjuster.

[0004] The technical solution of this utility model is to provide an office chair with the following structure, including a seat, a backrest, a headrest, two armrests, and a base; characterized in that: the seat includes an inner frame, a seat filling, and two seat support blocks, the two seat support blocks are installed on both sides of the seat filling, and the seat filling and the two seat support blocks are wrapped around the outside of the inner frame; each side of the seat support block is positioned relative to the fixed end of the angle adjuster on the seat; the backrest includes an inner frame, a backrest filling, and two backrest support blocks; the headrest includes a headrest frame and a headrest filling, the headrest frame is fixed to the top of the inner frame, the backrest filling is wrapped around the outside of the inner frame, the backrest filling is positioned relative to the swing end of the angle adjuster on the seat, the headrest filling is integrated with the two backrest support blocks, and the two backrest support blocks are wrapped around the outside of the two sides of the inner frame, and the headrest filling is wrapped around the outside of the headrest frame.

[0005] The inner frame of the chair seat includes a first frame and multiple elastic strips arranged along the front-to-back direction on the first frame. The multiple elastic strips are distributed laterally to provide support and reset. First support strips are provided on both sides of the first frame. The middle of the first support strip protrudes upward. Each chair seat support block is wrapped around the outside of the first support strip on the same side. A second support strip is provided between the protruding part of the first support strip and the side rod of the first frame. An angle adjuster fixing seat is provided at the rear end of the side rod of the first frame.

[0006] The inner frame of the chair back includes a second frame, multiple crossbeams, a third support bar, and a fourth support bar. The second frame has a rectangular structure. The multiple crossbeams are installed on two vertical bars of the second frame along the height direction. The third support bar has an arc-shaped structure, and both ends are fixed to the top of the two vertical bars of the second frame. The fourth support bar has an arc-shaped structure, and its bottom end is fixed to the bottom of the two vertical bars of the second frame, and its top end is fixed to the third support bar. Each chair back support block is wrapped around the third and fourth support bars on the same side.

[0007] The inner frame of the seat is connected by two angle adjusters on the left and right sides. Each angle adjuster includes a fixed end and a swing end. The fixed end is fixed to the inner frame of the seat, and the swing end is fixed to the inner frame of the backrest.

[0008] The inner frame of the chair back is provided with a bottom rod, which is a hollow tube, and the synchronization rods of the left and right angle adjusters pass through the bottom rod.

[0009] The headrest is provided with a ventilation channel, which includes a reinforcing plate in the headrest frame, a first elongated hole in the headrest filling, and a protective frame. The reinforcing plate is provided with a second elongated hole, and the protective frame passes through the first and second elongated holes and is fixed to the headrest filling and the reinforcing plate.

[0010] With the above structure, this utility model has the following advantages:

[0011] 1. The headrest and backrest are integrated into a single unit. This integrated design reduces the loosening and rattling issues commonly found with adjustable headrests, making them more reliable over long-term use. The fixed headrest provides more stable neck support when leaning back or during a collision.

[0012] 2. The headrest filling blocks are integrated with the filling blocks on both sides of the chair back, resulting in better positioning of the filling blocks within the internal frame. This integrated filling design, by completely wrapping the frame, ensures more even pressure distribution, preventing single-point deformation and reducing filling displacement. The larger contact surface between the filling blocks and the chair back frame allows for direct fixing via molding or injection molding, reducing gaps or slippage between the filling layer and the frame.

[0013] 3. Position the seat filling and back filling of the chair simultaneously with the angle adjuster. The angle adjuster includes a fixed end and a swing end. The fixed end positions the seat filling, and the swing end positions the back filling.

[0014] As an improvement, the inner frame of the chair seat includes a first frame and multiple elastic strips arranged along the front-to-back direction on the first frame. The multiple elastic strips are distributed laterally at intervals to provide support and reset. First support strips are provided on both sides of the first frame, with the middle of each first support strip protruding upwards. Each chair seat support block wraps around the outside of the first support strip on the same side. A second support strip is provided between the protruding part of the first support strip and the side rod of the first frame. An angle adjuster fixing seat is provided at the rear end of each side rod of the first frame. This inner frame of the chair seat has good strength and support. The side supports also serve their function.

[0015] As an improvement, the inner frame of the chair back includes a second frame, multiple crossbeams, a third support bar, and a fourth support bar. The second frame has a rectangular structure, and the multiple crossbeams are installed on two vertical bars of the second frame along the height direction. The third support bar has an arc-shaped structure, and both ends are fixed to the top of the two vertical bars of the second frame. The fourth support bar has an arc-shaped structure, and its bottom end is fixed to the bottom of the two vertical bars of the second frame, and its top end is fixed to the third support bar. Each chair back support block is wrapped around the third and fourth support bars on the same side, providing better support for both sides of the chair back.

[0016] The inner frame of the chair back is equipped with a bottom rod, which is a hollow tube. The synchronization rods of the left and right angle adjusters pass through the bottom rod, which can make the structure more compact and the bottom rod can also play a protective role.

[0017] The headrest is equipped with a ventilation channel, which includes a reinforcing plate inside the headrest frame, a first elongated hole inside the headrest filling, and a protective frame. The reinforcing plate has a second elongated hole, and the protective frame passes through the first and second elongated holes and is fixed to the headrest filling and the reinforcing plate, which increases the ventilation effect and can also position the filling of the chair back and the headrest. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the office chair of this utility model.

[0019] Figure 2 This is a schematic diagram of the split components of the office chair of this utility model.

[0020] Figure 3 This is a schematic diagram of the internal frame of the office chair of this utility model.

[0021] Figure 4 This is a schematic diagram of the frame of the chair seat of this utility model.

[0022] Figure 5 This is a schematic diagram of the frame of the chair back of this utility model.

[0023] Figure 6This is a schematic diagram of the headrest of this utility model in parts.

[0024] The diagram shows: 1. Seat, 2. Backrest, 3. Headrest, 4. Inner frame of seat, 5. Seat filling, 6. Seat support block, 7. Inner frame of backrest, 8. Backrest filling, 9. Backrest support block, 10. Headrest frame, 11. Headrest filling, 12. First frame, 13. First support bar, 14. Second support bar, 15. Fixed seat, 16. Second frame, 17. Crossbeam, 18. Third support bar, 19. Fourth support bar, 20. Base rod, 21. Angle adjuster, 22. Fixed end, 23. Swing end, 24. Synchronizing rod, 25. Reinforcing plate, 26. First elongated hole, 27. Protective frame, 28. Second elongated hole, 29. Elastic strip. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1-6 As shown, the office chair of this utility model includes a seat 1, a backrest 2, a headrest 3, two armrests and a base.

[0027] like Figure 2 , Figure 3 and Figure 5 The chair seat 1 includes an inner frame 4, a seat filling 5, and two seat support blocks 6. The two seat support blocks 6 are installed on both sides of the seat filling 5, and the seat filling 5 and the two seat support blocks 6 are wrapped around the outside of the inner frame 4. Each seat support block 6 is positioned relative to the fixed end of the angle adjuster on the chair seat 1. The inner frame 4 includes a first frame 12 and multiple elastic strips 29 arranged along the front-to-back direction on the first frame 12. In this embodiment, there are three elastic strips, which are formed by multiple S-shaped bends, providing good elasticity. The multiple elastic strips 29 are distributed laterally at intervals to provide support and reset, and the two ends of the elastic strips 29 are detachably fastened to the first frame 12. First support bars 13 are provided on both sides of the first frame 12. The middle of the first support bar 13 protrudes upward. Each seat support block 6 is wrapped around the outside of the first support bar 13 on the same side. A second support bar 14 is provided between the protruding part of the first support bar 13 and the side rod of the first frame 12. A fixed seat 15 for an angle adjuster 21 is provided at the rear end of the side rod of the first frame 12.

[0028] like Figure 2 , Figure 3 and Figure 4As shown, the chair back 2 includes an inner back frame 7, a back filling 8, and two back support blocks 9. The headrest 3 includes a headrest frame 10 and a headrest filling 11. The headrest frame 10 is fixed to the top of the inner back frame 7, and the back filling 8 is wrapped around the outside of the inner back frame 7. The back filling 8 is positioned relative to the swing end of the angle adjuster on the seat 1. The inner back frame 7 includes a second frame 16, multiple crossbeams 17, a third support bar 18, and a fourth support bar 19. The second frame 16 has a rectangular structure. The multiple crossbeams 17 are installed along the height direction on two vertical bars of the second frame 16. The third support bar 18 has an arc-shaped structure, and both ends are fixed to the top of the two vertical bars of the second frame 16. The fourth support bar 19 has an arc-shaped structure, and its bottom end is fixed to the bottom of the two vertical bars of the second frame 16, and its top end is fixed to the third support bar 18. Each back support block 9 is wrapped around the third support bar 18 and the fourth support bar 19 on the same side.

[0029] like Figure 6 As shown, the headrest filling 11 is integrated with the two backrest support blocks 9, and the two backrest support blocks 9 are wrapped around the outside of the two sides of the inner frame 7 of the backrest, and the headrest filling 11 is wrapped around the outside of the headrest frame 10, further increasing the positioning function.

[0030] The inner frame 4 of the seat is connected by two left and right angle adjusters 21. Each angle adjuster 21 includes a fixed end 22 and a swing end 23. The fixed end 22 is fixed to the inner frame 4 of the seat, and the swing end 23 is fixed to the inner frame 7 of the backrest.

[0031] The inner frame 7 of the chair back is provided with a bottom rod 20, which is a hollow tube. The synchronizing rods 24 of the left and right angle adjusters 21 pass through the bottom rod 20, so that the synchronizing rods 24 are prevented from hitting the outside when rotating. The bottom rod 20 plays a good protective role.

[0032] like Figure 6 As shown, the headrest 3 has a ventilation channel, which includes a reinforcing plate 25 inside the headrest frame 10, a first elongated hole 26 inside the headrest filling 11, and a protective frame 27. The reinforcing plate 25 has a second elongated hole 28, which is horizontally positioned and has an upward-protruding bottom in the middle. The protective frame 27 passes through the first elongated hole 26 and the second elongated hole 28 and is fixed to the headrest filling 11 and the reinforcing plate 25. The ventilation channel facilitates ventilation and perspiration.

Claims

1. An office chair, comprising a seat (1), a backrest (2), a headrest (3), two armrests, and a base; characterized in that: The chair seat (1) includes an inner frame (4), a seat filling (5), and two seat support blocks (6). The two seat support blocks (6) are installed on both sides of the seat filling (5). The seat filling (5) and the two seat support blocks (6) are wrapped around the outside of the inner frame (4). Each seat support block (6) is positioned relative to the fixed end of the angle adjuster on the chair seat (1). The backrest (2) includes an inner frame (7), a backrest filling (8), and two backrest support blocks (9). The headrest (3) includes a headrest... The headrest frame (10) and headrest filling (11) are fixed to the top of the inner frame (7) of the backrest. The backrest filling (8) is wrapped around the outside of the inner frame (7). The backrest filling (8) is positioned with the swing end of the angle adjuster on the seat (1). The headrest filling (11) is integrated with two backrest support blocks (9). The two backrest support blocks (9) are wrapped around the outside of the two sides of the inner frame (7), and the headrest filling (11) is wrapped around the outside of the headrest frame (10).

2. The office chair according to claim 1, characterized in that: The inner frame (4) of the chair seat includes a first frame (12) and multiple elastic strips (29) arranged along the front-to-back direction on the first frame (12). The multiple elastic strips (29) are distributed laterally to provide support and reset. First support strips (13) are provided on both sides of the first frame (12). The middle part of the first support strip (13) protrudes upward. Each chair seat support block (6) is wrapped around the outside of the first support strip (13) on the same side. A second support strip (14) is provided between the protruding part of the first support strip (13) and the side rod of the first frame (12). The rear end of the side rod of the first frame (12) is provided with a fixing seat (15) of an angle adjuster (21).

3. The office chair according to claim 1, characterized in that: The inner frame (7) of the chair back includes a second frame (16), multiple crossbeams (17), a third support bar (18), and a fourth support bar (19). The second frame (16) has a rectangular structure. The multiple crossbeams (17) are installed on the two vertical bars of the second frame (16) along the height direction. The third support bar (18) has an arc-shaped structure and its two ends are fixed to the top of the two vertical bars of the second frame (16). The fourth support bar (19) has an arc-shaped structure and its bottom end is fixed to the bottom of the two vertical bars of the second frame (16), and its top end is fixed to the third support bar (18). Each chair back support block (9) is wrapped around the third support bar (18) and the fourth support bar (19) on the same side.

4. The office chair according to claim 2, characterized in that: The inner frame (4) of the seat is connected by two angle adjusters (21) on the left and right sides. Each angle adjuster (21) includes a fixed end (22) and a swing end (23). The fixed end (22) is fixed to the inner frame (4) of the seat, and the swing end (23) is fixed to the inner frame (7) of the backrest.

5. The office chair according to claim 4, characterized in that: The inner frame (7) of the chair back is provided with a bottom rod (20), which is a hollow tube, and the synchronization rods (24) of the left and right angle adjusters (21) pass through the bottom rod (20).

6. The office chair according to claim 1, characterized in that: The headrest (3) is provided with a ventilation channel, which includes a reinforcing plate (25) in the headrest frame (10), a first elongated hole (26) in the headrest filling (11) and a protective frame (27). The reinforcing plate (25) is provided with a second elongated hole (28). The protective frame (27) passes through the first elongated hole (26) and the second elongated hole (28) and is fixed to the headrest filling (11) and the reinforcing plate (25).

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