Office chair with adjustable armrests

Abstract

The office chair comprises chair legs placed on the ground, a chair seat is fixedly arranged on the sides, away from the ground, of the chair legs, a chair back is installed on the side, in the width direction, of the chair seat, the armrests are arranged on the two sides, in the length direction, of the chair seat, and lifting assemblies are arranged between the armrests and the chair seat; the lifting assembly comprises a mounting table and a driving part, the mounting table is mounted on the seat, the driving part is mounted on the side, away from the ground, of the mounting table, the handrail is mounted on the side, away from the mounting table, of the driving part, and the driving part drives the handrail to slide in the direction close to or away from the seat. The office chair has the effect of improving the comfort of using the office chair.

Description

Technical Field

[0001] The present application relates to the technical field of office supplies, and in particular to an office chair with adjustable armrests. Background Art

[0002] Office chairs refer to various chairs equipped for the convenience of work in daily work and social activities. Office partners divide office chairs into narrow and broad sense. The narrow sense of office chair refers to the backrest chair that people sit on when doing desk work in a sitting position. The broad sense of office chair is all chairs used in offices, including executive chairs, mid-shift chairs, meeting chairs, staff chairs, conference chairs, visitor chairs, training chairs, etc.

[0003] Authorization announcement No. CN214905264U discloses an office chair with adjustable lumbar support, which includes chair legs, a seat arranged on the chair legs, and a chair back arranged on the seat, the chair legs include leg frames and a plurality of universal rollers fixed to the leg frames by bolts, the seat includes a base plate, armrests symmetrically fixed to both sides of the base plate by bolts, and a sponge pad woven on the upper end surface of the base plate, the chair back includes a flexible mesh layer arranged on the seat, a support rod for supporting the flexible mesh layer, and a lumbar support arranged on the support rod, one end of the support rod is fixedly connected to the seat, the end of the support rod away from the seat is fixedly connected to the end of the flexible mesh layer away from the seat, and the lumbar support is slidably connected to the support rod.

[0004] With regard to the above-mentioned related technologies, the armrests are fixedly installed on the chair seat, and the fixed height of the armrests cannot adapt to the needs of different users for armrests. Users cannot adjust the height of the armrests according to the position they feel comfortable, so that the arms cannot be well supported, reducing the comfort of the user sitting on the office chair. Utility Model Content

[0005] In order to improve the comfort of using an office chair, the present application provides an office chair with adjustable armrests.

[0006] The present application provides an office chair with adjustable armrests adopts the following technical solution:

[0007] An office chair with adjustable armrests comprises a chair leg placed on the ground, a chair seat being fixedly provided on the side of the chair leg away from the ground, a chair back being installed on one side of the seat in the width direction, armrests being arranged on both sides of the seat in the length direction, a lifting assembly being arranged between the armrests and the seat, the lifting assembly comprising a mounting platform and a driving member, the mounting platform being mounted on the seat, the driving member being mounted on the side of the mounting platform away from the ground, the armrest being mounted on the side of the driving member away from the mounting platform, and the driving member driving the armrest to slide towards or away from the seat.

[0008] By adopting the above technical solution, the armrest is driven by the driving member to slide toward or away from the seat, thereby realizing the height adjustment of the armrest. The user can adjust the armrest according to the comfortable height for himself, thereby improving the comfort of using the office chair.

[0009] Preferably, the lifting assembly also includes a sliding seat and a sliding rod, the sliding seat is fixed on the mounting platform, one end of the sliding rod is inserted into the sliding seat, the sliding rod slides in the sliding seat along the height direction of the chair back, and the armrest is installed at one end of the sliding rod away from the sliding seat.

[0010] By adopting the above technical solution, the sliding seat and the sliding rod can guide the sliding of the handrail, thereby reducing the probability of the handrail tilting when sliding.

[0011] Preferably, a fixing mechanism is arranged between the sliding seat and the sliding rod, and the fixing mechanism comprises a mounting groove, a wedge block, a fixing spring and a fixing groove, the mounting groove is arranged on the sliding seat, the wedge block is slidingly arranged in the mounting groove, the fixing spring is placed in the mounting groove, there are a plurality of fixing grooves, and the fixing grooves are evenly arranged on the sliding rod along the length direction of the sliding rod, the elastic force of the fixing spring drives the wedge block to slide away from the mounting groove, and the wedge block is inserted into one of the fixing grooves by sliding, and the wedge surface of the wedge block faces the ground.

[0012] By adopting the above technical solution, when the armrest is lifted, the bottom groove wall of the fixed groove abuts against the wedge surface of the wedge block to drive the wedge block to slide, thereby disengaging the wedge block to facilitate normal lifting of the armrest. When the height adjustment of the armrest is completed, the wedge block rebounds and is inserted into the fixed groove under the elastic force of the fixed spring. The side of the wedge block without the wedge surface abuts against the top groove wall of the fixed groove to limit the sliding of the sliding rod, thereby fixing the adjusted armrest and improving the stability of the armrest.

[0013] Preferably, a shift rod is fixedly provided on the wedge block, the shift rod passes through the sliding seat and extends out of the sliding seat, and the shift rod slides on the sliding seat.

[0014] By adopting the above technical solution, the setting of the lever can drive the wedge block to disengage from the fixing groove when the sliding rod is about to drive the handrail to descend, thereby releasing the wedge block from fixing the sliding rod and facilitating the descent of the handrail.

[0015] Preferably, a reinforcement groove is provided on the sliding seat, a reinforcement bolt is slidably arranged in the reinforcement groove, and the reinforcement bolt passes through the reinforcement groove and is threadedly connected to the sliding rod.

[0016] By adopting the above technical solution, the reinforcing screw is loosened, and the reinforcing screw serves as a guide to guide the sliding of the sliding rod on the sliding seat, making the sliding of the sliding rod smoother. The reinforcing screw is tightened to reinforce the sliding rod on the sliding seat, thereby achieving reinforcement of the sliding rod and improving the stability of the sliding rod on the sliding seat.

[0017] Preferably, a control switch is provided at one end of the armrest away from the chair back, the control switch is electrically connected to the driving member, and the control switch controls the start and stop of the driving member.

[0018] By adopting the above technical solution, the setting of the control switch can facilitate the control of the driving member.

[0019] Preferably, a protective cover is hingedly provided at one end of the armrest away from the chair back, and the protective cover is rotatably sleeved outside the control switch.

[0020] By adopting the above technical solution, the provision of the protective cover can protect the control switch and reduce the probability of the control switch being accidentally touched.

[0021] Preferably, a flexible pad is provided on the side of the armrest facing away from the ground.

[0022] By adopting the above technical solution, the flexible pad can improve the comfort of the armrest, thereby improving the overall comfort of the office chair.

[0023] Preferably, a roller is installed on one end of the chair leg away from the chair seat.

[0024] By adopting the above technical solution, the arrangement of the rollers can facilitate the moving of the office chair.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The armrest is driven by a driving member to slide toward or away from the seat, thereby achieving height adjustment of the armrest. The user can adjust the armrest according to his or her comfortable height, thereby improving the comfort of using the office chair;

[0027] 2. The sliding seat and the sliding rod can guide the sliding of the handrail, thereby reducing the probability of the handrail tilting when sliding;

[0028] 3. The setting of the control switch can facilitate the control of the driving component, and the setting of the protective cover can protect the control switch and reduce the probability of the control switch being accidentally touched;

[0029] 4. Flexible pads can improve the comfort of the armrests, thereby improving the overall comfort of the office chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of this embodiment.

[0031] Figure 2 yes Figure 1 Enlarged view of part A in the middle.

[0032] Figure 3 It is a schematic diagram of the overall structure of this embodiment from another perspective.

[0033] Figure 4 yes Figure 3 Enlarged view of part B in the middle.

[0034] Explanation of the reference numerals in the accompanying drawings: 1. Chair leg; 2. Chair seat; 3. Chair back; 4. Armrest; 5. Lifting assembly; 51. Mounting platform; 52. Driving member; 53. Sliding seat; 54. Sliding rod; 6. Fixing mechanism; 61. Mounting slot; 62. Wedge block; 63. Fixing spring; 64. Fixing slot; 7. Push rod; 8. Reinforcement slot; 9. Reinforcement bolt; 10. Control switch; 11. Protective cover; 12. Insert block; 13. Slot; 14. Flexible pad; 15. Roller. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-4 This application is described in further detail.

[0036] The present application embodiment discloses an office chair with adjustable armrests. Figure 1 , including a chair leg 1 set on the ground, a roller 15 is arranged between the chair leg 1 and the ground, the chair leg 1 slides on the ground through the roller 15, a rectangular plate-shaped seat 2 is horizontally fixed on the side of the chair leg 1 away from the ground, a chair back 3 is vertically fixed on one side of the width direction of the seat 2, armrests 4 are arranged on both sides of the length direction of the seat 2, and a flexible pad 14 is arranged on the side of the armrest 4 away from the ground. The flexible pad 14 is made of PU sponge. The PU sponge is soft and elastic and has good wear resistance and tensile strength. It is not easy to be damaged during use. A lifting component 5 is arranged between the armrest 4 and the seat 2. The hand 4 is mounted on the seat 2 through a lifting assembly 5. The lifting assembly 5 includes a mounting platform 51 fixedly mounted on the seat 2 and a driving member 52 mounted on the side of the mounting platform 51 away from the ground. In this embodiment, the driving member 52 is an electric cylinder. The armrest 4 is mounted on the side of the driving member 52 away from the mounting platform 51. When the electric cylinder is started, the piston rod of the electric cylinder drives the armrest 4 to slide toward or away from the seat 2. The armrest 4 is driven to slide toward or away from the seat 2 by the driving member 52, thereby realizing the height adjustment of the armrest 4. The user can adjust the armrest 4 according to the comfortable height, thereby improving the comfort of using the office chair.

[0037] Reference Figure 1 and Figure 2A control switch 10 is provided at one end of the armrest 4 away from the backrest 3. The control switch 10 is electrically connected to the drive member 52. A control circuit board is also electrically connected to the circuit between the control switch 10 and the drive member 52. The control switch 10 controls the start and stop of the drive member 52 through the control circuit board. The control switch 10 arranged on the armrest 4 can conveniently control the drive member 52; a protective cover 11 is hingedly provided at one end of the armrest 4 away from the backrest 3. The protective cover 11 is sleeved outside the control switch 10 or detached from the sleeve of the control switch 10 by rotation. One end of the protective cover is hingedly provided on the armrest 4, and the other end is provided with an insert block 12. A slot 13 is opened on the armrest 4 corresponding to the insert block 12. When the protective cover is sleeved outside the control switch 10, the insert block 12 is inserted into the slot 13 to fix the protective cover on the armrest 4. The setting of the protective cover can protect the control switch 10 and reduce the probability of the control switch 10 being accidentally touched.

[0038] Reference Figure 1 The lifting assembly 5 also includes a sliding seat 53 fixed on the mounting platform 51 and a sliding rod 54 with one end inserted into the sliding seat 53. The sliding rod 54 slides in the sliding seat 53 along the height direction of the chair back 3. The armrest 4 is installed on the end of the sliding rod 54 away from the sliding seat 53. The sliding seat 53 and the sliding rod 54 can guide the sliding of the armrest 4, thereby reducing the probability of the armrest 4 tilting when sliding.

[0039] Reference Figure 1A fixing mechanism 6 is provided between the sliding seat 53 and the sliding rod 54. The fixing mechanism 6 includes a mounting groove 61 provided on the sliding seat 53, a wedge block 62 slidably provided in the mounting groove 61, a fixing spring 63 placed in the mounting groove 61, and a plurality of fixing grooves 64 uniformly provided on the sliding rod 54 along the length direction of the sliding rod 54. The fixing spring 63 elastic force drives the wedge block 62 to slide away from the mounting groove 61. The wedge block 62 is inserted into one of the fixing grooves 64 by sliding, and the wedge surface of the wedge block 62 faces the ground. When When the armrest 4 is lifted, the bottom wall of the fixed groove 64 abuts against the wedge surface of the wedge block 62, driving the wedge block 62 to slide, so that the wedge block 62 is disengaged to facilitate the normal lifting of the armrest 4. When the height adjustment of the armrest 4 is completed, the wedge block 62 rebounds and is inserted into the fixed groove 64 under the elastic force of the fixing spring 63. The side of the wedge block 62 without the wedge surface abuts against the top wall of the fixed groove 64 to limit the sliding of the sliding rod 54, thereby fixing the adjusted armrest 4 and improving the stability of the armrest 4. A lever 7 is fixed on the wedge block 62. The rod 7 passes through the sliding seat 53 and extends out of the sliding seat 53. The lever 7 slides on the sliding seat 53. When the armrest 4 is lifted, the bottom groove wall of the fixed groove 64 abuts against the wedge surface of the wedge block 62 to drive the wedge block 62 to slide, so that the wedge block 62 is disengaged to facilitate the normal lifting of the handrail 4. When the height adjustment of the handrail 4 is completed, the wedge block 62 rebounds and inserts into the fixed groove 64 under the elastic force of the fixed spring 63. The side of the wedge block 62 without the wedge surface abuts against the top groove wall of the fixed groove 64 to limit the sliding of the sliding rod 54, thereby adjusting the height of the handrail 4. The armrest 4 is fixed to improve the stability of the armrest 4; a reinforcement groove 8 is opened on the sliding seat 53, and a reinforcement bolt 9 is slidingly arranged in the reinforcement groove 8. The reinforcement bolt 9 passes through the reinforcement groove 8 and is threadedly connected to the sliding rod 54. The reinforcement screw is loosened, and the reinforcement screw serves as a guide to guide the sliding of the sliding rod 54 on the sliding seat 53, so that the sliding of the sliding rod 54 is smoother. The reinforcement screw is tightened to reinforce the sliding rod 54 on the sliding seat 53, thereby realizing the reinforcement of the sliding rod 54 and improving the stability of the sliding rod 54 on the sliding seat 53.

[0040] The implementation principle of an office chair with adjustable armrests 4 in the embodiment of the present application is as follows: the office chair is moved to a suitable position by means of the roller 15. When the armrest 4 needs to be raised, the reinforcing screw is loosened and the protective cover is rotated, and the control switch 10 is pressed to control the driving member 52 to drive the armrest 4 to be raised, thereby adjusting the armrest 4 to make it be raised. After the armrest 4 is raised to a suitable height, the control switch 10 is released, and the protective cover is rotated to be sleeved outside the control switch 10, and then the reinforcing screw is tightened to complete the lifting of the armrest 4. When the armrest 4 needs to be lowered, the reinforcing screw is loosened and the protective cover is rotated, and the lever 7 is moved to make the wedge block 62 disengage from the fixing groove 64, and at the same time, the control switch 10 is pressed to control the driving member 52 to drive the armrest 4 to be lowered, thereby adjusting the armrest 4 to make it be lowered. After the armrest 4 is lowered to a suitable height, the control switch 10 and the lever 7 are released, and the protective cover is rotated to be sleeved outside the control switch 10, and then the reinforcing screw is tightened to complete the lowering of the armrest 4.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An office chair with adjustable armrests, comprising a chair leg (1) placed on the ground, a chair seat (2) fixedly provided on the side of the chair leg (1) facing away from the ground, a chair back (3) installed on one side of the chair seat (2) in the width direction, and armrests (4) provided on both sides of the chair seat (2) in the length direction, characterized in that: A lifting assembly (5) is arranged between the armrest (4) and the seat (2), the lifting assembly (5) comprising a mounting platform (51) and a driving member (52), the mounting platform (51) being mounted on the seat (2), the driving member (52) being mounted on a side of the mounting platform (51) facing away from the ground, the armrest (4) being mounted on a side of the driving member (52) facing away from the mounting platform (51), and the driving member (52) driving the armrest (4) to slide in a direction approaching or away from the seat (2).

2. The office chair with adjustable armrests according to claim 1, characterized in that: The lifting assembly (5) further comprises a sliding seat (53) and a sliding rod (54); the sliding seat (53) is fixedly mounted on the mounting platform (51); one end of the sliding rod (54) is inserted into the sliding seat (53); the sliding rod (54) slides in the sliding seat (53) along the height direction of the chair back (3); and the armrest (4) is mounted on one end of the sliding rod (54) away from the sliding seat (53).

3. The office chair with adjustable armrests according to claim 2, characterized in that: A fixing mechanism (6) is arranged between the sliding seat (53) and the sliding rod (54), and the fixing mechanism (6) comprises a mounting groove (61), a wedge block (62), a fixing spring (63) and a fixing groove (64). The mounting groove (61) is arranged on the sliding seat (53), the wedge block (62) is slidably arranged in the mounting groove (61), the fixing spring (63) is placed in the mounting groove (61), there are a plurality of fixing grooves (64), and the fixing grooves (64) are evenly arranged on the sliding rod (54) along the length direction of the sliding rod (54). The fixing spring (63) drives the wedge block (62) to slide away from the mounting groove (61) by elastic force, and the wedge block (62) is inserted into one of the fixing grooves (64) by sliding, and the wedge surface of the wedge block (62) faces the ground.

4. The office chair with adjustable armrests according to claim 3, characterized in that: A shifting rod (7) is fixedly provided on the wedge-shaped block (62). The shifting rod (7) penetrates the sliding seat (53) and extends out of the sliding seat (53). The shifting rod (7) slides on the sliding seat (53).

5. The office chair with adjustable armrests according to claim 4, characterized in that: The sliding seat (53) is provided with a reinforcement groove (8), a reinforcement bolt (9) is slidably arranged in the reinforcement groove (8), and the reinforcement bolt (9) passes through the reinforcement groove (8) and is threadedly connected to the sliding rod (54).

6. The office chair with adjustable armrests according to claim 1, characterized in that: A control switch (10) is provided at one end of the armrest (4) facing away from the chair back (3); the control switch (10) is electrically connected to the driving member (52); and the control switch (10) controls the start and stop of the driving member (52).

7. The office chair with adjustable armrests according to claim 6, characterized in that: A protective cover (11) is hingedly provided at one end of the armrest (4) facing away from the chair back (3), and the protective cover (11) is rotatably sleeved outside the control switch (10).

8. The office chair with adjustable armrests according to claim 1, characterized in that: A flexible pad (14) is provided on the side of the handrail (4) facing away from the ground.

9. The office chair with adjustable armrests according to claim 1, characterized in that: A roller (15) is mounted on one end of the chair leg (1) facing away from the chair seat (2).

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