Office chair armrest multidirectional adjusting structure
By using a worm gear and bevel gear meshing structure to synchronously adjust the height of the office chair armrests, the problem of time-consuming and laborious adjustment of traditional office chair armrests is solved, achieving consistent armrest height and multi-angle adjustment, thus improving user comfort.
Patent Information
- Application Number
- CN202520324002.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Traditional office chairs require separate adjustment of armrest height, which is time-consuming, laborious, and prone to inconsistencies, affecting user comfort.
It adopts a worm gear and bevel gear meshing structure, and realizes synchronous height adjustment of the two handrails by rotating the rotating rod. Combined with the limit component and the lifting component, it ensures the consistency of handrail height.
It enables quick and convenient adjustment of armrest height, maintains consistent height, improves user comfort, and supports multi-angle adjustment, enhancing the overall comfort of the office chair.
Smart Images
Figure CN223746064U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to office supplies technical field especially relates to office chair handrail multidirectional adjusting structure. BACKGROUND
[0002] Office chair refers to various chairs equipped for work convenience in daily work and social activities. Office chair is divided into narrow sense and broad sense. The narrow sense office chair refers to the backrest chair sat by people in the sitting posture state when working on the desktop. The broad sense office chair refers to all chairs used in the office, including large class chair, middle class chair, guest chair, staff chair, meeting chair, visitor chair and training chair.
[0003] The height of the traditional office handrail needs to be adjusted separately, which is time-consuming and laborious, and the height of the handrail after adjustment is inconsistent, which makes the support position of the handrail to the arm inconsistent, and the user's arm is not comfortable, so as to cause the discomfort of the sitting posture and the poor use of the chair. INVENTION CONTENTS
[0004] In order to make up for the above shortcomings, the utility model provides office chair handrail multidirectional adjusting structure, aims at improving the problem of time-consuming and laborious handrail adjustment.
[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: office chair handrail multidirectional adjusting structure, including mounting piece, the top of mounting piece is provided with two handrails, the bottom of mounting piece inside is provided with two first installation blocks symmetrically, first driven rod is rotatably connected between two first installation blocks, first driven rod both sides are fixedly connected with first bevel gear through the inside of first installation block, the middle position of first driven rod outer wall is provided with worm gear, the side of rotating rod close to mounting piece extends to the inside of mounting piece, and the side of rotating rod is connected with worm gear, worm gear and worm gear are engaged with each other, the position corresponding to first bevel gear in the inside of mounting piece is provided with adjusting assembly, the top of adjusting assembly is provided with lifting assembly, the top of mounting piece is provided with lifting assembly through handrail.
[0006] Preferably, the adjusting assembly comprises two second installation blocks fixedly connected to the inner wall of the mounting piece symmetrically, the second installation block is rotatably provided with a second driven rod penetrating the inside of the second installation block, the top of the second driven rod is fixedly connected with an internally threaded sleeve, the top of the internally threaded sleeve extends to the outside of the mounting piece and is connected with the lifting assembly, and the bottom of the second driven rod is fixedly provided with a second bevel gear, the second bevel gear and the first bevel gear are engaged with each other.
[0007] Preferably, the lifting assembly comprises a sliding sleeve, the sliding sleeve is sleeved on the outside of an internally threaded sleeve, the inner wall of the internally threaded sleeve is threadedly connected with an adjusting threaded rod, the top of the internally threaded sleeve is in an open structure, the top of the adjusting threaded rod extends to the outside of the internally threaded sleeve and is fixedly connected with the top of the inside of the sliding sleeve, and the top of the back of the mounting piece is provided with a limiting assembly.
[0008] Preferably, the limiting assembly comprises two first limiting rods fixedly connected with the top of the back of the mounting piece, the first limiting rods are in an L-shaped structure, the back of the sliding sleeve is fixedly provided with a second limiting rod at a position corresponding to the first limiting rods, the top of the second limiting rod is provided with a limiting groove penetrating the inside of the second limiting rod, and the top of the first limiting rod penetrates the inside of the limiting groove and the diameter of the first limiting rod is matched with the width of the limiting groove.
[0009] Preferably, the bottom of the armrest and the two sides of the sliding sleeve are symmetrically provided with hinged pieces, one side of the hinged piece is provided with a hinged shaft, the hinged shaft penetrates the inside of the sliding sleeve and the adjusting threaded rod, and the hinged piece is dampedly hinged to the two sides of the sliding sleeve through the sliding sleeve.
[0010] Preferably, the second limiting rod is in an L-shaped structure, and the top of the second limiting rod is not in contact with the bottom of the armrest.
[0011] Preferably, the mounting piece is in a U-shaped structure, and the horizontally bent part of the mounting piece is fixedly mounted on the bottom of the seat.
[0012] Preferably, the front of the rotating rod is fixedly mounted with a holding ring.
[0013] The utility model has the advantages of the following:
[0014] 1、In the utility model, the height of the two armrests can be simultaneously adjusted by rotating the rotating rod, the armrests are not adjusted one by one, the rate of adjusting the armrests is improved, the armrests are more convenient and faster to adjust, the consistency of the height of the two armrests is kept after adjusting, the armrests are more comfortable to support the arms, and the comfort of the whole office chair is improved.
[0015] 2、The inclination angle of the armrests can be adjusted, the armrests are adjusted at multiple angles, and the armrests are more comfortable to use. DRAWINGS
[0016] Figure 1 The structure diagram of the multi-directional adjusting structure of the armrests of the office chair is provided in the utility model.
[0017] Figure 2The internal structure diagram of the mounting piece of the multi-direction adjusting structure of the armrest of the office chair is shown in the utility model;
[0018] Figure 3 For Figure 1 The side view is shown in the utility model;
[0019] Figure 4 The connection structure diagram of the internal thread sleeve pipe and the sliding sleeve pipe of the multi-direction adjusting structure of the armrest of the office chair is shown in the utility model;
[0020] Figure 5 The connection structure diagram of the adjusting screw rod and the sliding sleeve pipe of the multi-direction adjusting structure of the armrest of the office chair is shown in the utility model;
[0021] Figure 6 For Figure 1 The enlarged view of A in the utility model is shown in the utility model;
[0022] Legend:
[0023] 1, mounting piece; 3, first driven rod; 4, first mounting block; 5, first bevel gear; 6, worm; 7, worm gear; 8, second mounting block; 9, second driven rod; 10, second bevel gear; 11, internal thread sleeve pipe; 12, adjusting screw rod; 13, sliding sleeve pipe; 14, rotating rod; 15, first limiting rod; 16, second limiting rod; 17, limiting groove; 18, armrest; 19, hinged piece; 20, hinged shaft. Specific implementation
[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the specification of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0025] Refer to Figures 1-6The utility model provides an office chair armrest multidirectional adjusting structure, including mounting piece 1, the top of mounting piece 1 is provided with two armrests 18, the bottom inside mounting piece 1 is provided with two first mounting blocks 4 symmetrically, the inside of two first mounting blocks 4 is rotatably connected with first driven rod 3, the both sides of first driven rod 3 are fixedly connected with first bevel gear 5 through the inside of first mounting block 4, the middle position of first driven rod 3 outer wall is provided with worm wheel 7, the front of mounting piece 1 is rotatably connected with rotating rod 14, the side of rotating rod 14 close to mounting piece 1 extends to the inside of mounting piece 1, and the side of rotating rod 14 is connected with worm gear 6, worm gear 6 and worm wheel 7 are intermeshed, the position of mounting piece 1 inside corresponding with first bevel gear 5 is provided with adjusting assembly, the top of adjusting assembly is provided with lifting assembly, armrest 18 is set up in the top of mounting piece 1 through lifting assembly.
[0026] When the height of second mounting block 8 needs to be adjusted, rotating rod 14 located at the bottom of the seat can be directly rotated, rotating rod 14 drives worm gear 6 to rotate, so that worm gear 6 drives first driven rod 3 to rotate through worm wheel 7, first driven rod 3 drives first bevel gear 5 to rotate, at this time, the lifting assembly is lifted or lowered through the cooperation of first bevel gear 5 and the adjusting assembly, so that the position of armrest 18 is lifted or lowered, through the above-mentioned mode, the height of two armrests 18 can be simultaneously adjusted by rotating rotating rod 14, without adjusting armrests 18 one by one, the rate of adjusting armrests 18 is improved, the adjustment of armrests 18 is more convenient and fast, the consistency of the height of two armrests 18 after adjustment is maintained, and the support of armrests 18 to arms is more comfortable, so that the comfort of the whole office chair is improved.
[0027] Referring to Figure 1 With Figure 2 The adjusting assembly comprises two second mounting blocks 8 symmetrically fixedly connected to the inner wall of the mounting piece 1, the inside of the second mounting block 8 is rotatably provided with a second driven rod 9 penetrating the inside of the second mounting block 8, the top of the second driven rod 9 is fixedly connected with an internally threaded sleeve 11, the top of the internally threaded sleeve 11 extends to the outside of the mounting piece 1 and is connected with the lifting assembly, and the bottom of the second driven rod 9 is fixedly provided with a second bevel gear 10, the second bevel gear 10 and the first bevel gear 5 are intermeshed.
[0028] When the first driven rod 3 drives the first bevel gear 5 to rotate, the worm wheel 7 is driven to rotate through the cooperation of the first bevel gear 5 and the second bevel gear 10, so that the worm gear 6 is driven to rotate, thereby driving the internally threaded sleeve 11 to rotate, so that the lifting assembly can be lifted or lowered through the internally threaded sleeve 11, and the height of the armrest 18 is adjusted.
[0029] Referring to Figure 1 With Figure 2, the lifting assembly comprises a sliding sleeve 13 which is sleeved on the outside of the internally threaded sleeve 11, the internally threaded sleeve 11 is threadedly connected with an adjusting threaded rod 12, the top of the internally threaded sleeve 11 is in an open structure, the top of the adjusting threaded rod 12 extends to the outside of the internally threaded sleeve 11 and is fixedly connected with the top inside of the sliding sleeve 13, and the top of the back of the mounting piece 1 is provided with a limiting assembly.
[0030] When the internally threaded sleeve 11 rotates, since the internally threaded sleeve 11 is threadedly connected with the adjusting threaded rod 12, the adjusting threaded rod 12 drives the handrails 18 to gradually rise or fall through the sliding sleeve 13 by the cooperation of the limiting assembly, so that the height of the handrails 18 is adjusted, through the above-mentioned mode, the height of the two handrails 18 can be simultaneously adjusted by rotating the rotating rod 14, without adjusting the handrails 18 one by one, the rate of adjusting the handrails 18 is improved, the adjustment of the handrails 18 is more convenient and fast, the consistency of the height of the two handrails 18 after being adjusted is maintained, and the support of the handrails 18 to the arms is more comfortable, so that the comfort of the whole office chair is improved.
[0031] Referring to Figure 3 With Figure 6 , the limiting assembly comprises two first limiting rods 15 which are fixedly connected to the top of the back of the mounting piece 1, the first limiting rod 15 is in an "L" structure, the back of the sliding sleeve 13 is fixedly provided with a second limiting rod 16 at a position corresponding to the first limiting rod 15, the top of the second limiting rod 16 is provided with a limiting groove 17 which penetrates the inside of the second limiting rod 16, the top of the first limiting rod 15 penetrates the inside of the limiting groove 17, and the diameter of the first limiting rod 15 is matched with the width of the limiting groove 17.
[0032] When the internally threaded sleeve 11 rotates and the sliding sleeve 13 rises or falls, the top of the first limiting rod 15 moves upward or downward in the inside of the limiting groove 17, and the position of the sliding sleeve 13 and the adjusting threaded rod 12 is limited by the cooperation of the first limiting rod 15 and the limiting groove 17, so that the adjusting threaded rod 12 and the sliding sleeve 13 are prevented from rotating with the internally threaded sleeve 11, thereby realizing the lifting of the position of the sliding sleeve 13.
[0033] Referring to Figure 1 With Figure 3 , the bottom of the handrail 18 and the two sides of the sliding sleeve 13 are symmetrically provided with a hinged piece 19, one side of the hinged piece 19 is provided with a hinged shaft 20, the hinged shaft 20 penetrates the inside of the sliding sleeve 13 and the adjusting threaded rod 12 near one side of the hinged piece 19, and the hinged piece 19 is dampingly hinged to the two sides of the sliding sleeve 13 through the sliding sleeve 13.
[0034] When the inclination angle of the handrail 18 needs to be adjusted, the handrail 18 can be pressed downwards at a position close to the front or back surface of the top of the handrail 18, and the hinge piece 19 is rotated around the hinge shaft 20, so that the inclination angle of the handrail 18 is adjusted, the multi-angle adjustment of the handrail 18 is realized, and the handrail 18 is more comfortable to use.
[0035] With reference to Figure 3 The second limiting rod 16 has an "L" shape structure, and the top of the second limiting rod 16 is not in contact with the bottom of the handrail 18.
[0036] The second limiting rod 16 avoids interfering with the movement of the handrail 18 to some extent, and guarantees the mobility of the handrail 18.
[0037] With reference to Figure 1 The mounting piece 1 has a "U" shape structure, and the horizontally bent part of the mounting piece 1 is fixedly installed at the bottom of the seat, the front surface of the rotating rod 14 extends to the front surface of the bottom of the seat, and the gripping ring is fixedly installed on the front surface of the rotating rod 14.
[0038] When the position of the handrail 18 needs to be adjusted, the gripping ring on the rotating rod 14 can be held by stretching the hand to the front surface of the bottom of the seat, and the height of the handrail 18 is adjusted by rotating the rotating rod 14, so that the height of the handrail 18 is adjusted more conveniently.
[0039] Working principle: when the height of the second mounting block 8 needs to be adjusted, the rotating rod 14 located at the bottom of the seat is directly rotated, the worm 6 is rotated by the rotating rod 14, the first driven rod 3 is rotated by the worm 6 through the worm wheel 7, the worm 6 is rotated by the first bevel gear 5 and the second bevel gear 10 through the mutual cooperation of the worm wheel 7 at the time of rotation, so that the worm 6 drives the internally threaded sleeve 11 to rotate, and the adjustment screw rod 12 drives the handrail 18 to gradually rise or fall through the sliding sleeve 13 due to the threaded connection between the internally threaded sleeve 11 and the adjustment screw rod 12 during the rotation of the internally threaded sleeve 11, so that the height of the handrail 18 is adjusted.
[0040] During the rising or falling of the sliding sleeve 13, the top of the first limiting rod 15 moves upwards or downwards in the inside of the limiting groove 17, and the position of the sliding sleeve 13 and the adjustment screw rod 12 is limited by the cooperation of the first limiting rod 15 and the limiting groove 17, so that the adjustment screw rod 12 and the sliding sleeve 13 are prevented from rotating with the internally threaded sleeve 11, and the position of the sliding sleeve 13 is lifted or lowered.
[0041] At the same time, when the angle of the handrail 18 needs to be adjusted, the handrail 18 can be pressed down at the position close to the front or back of the top of the handrail 18, so that the hinge piece 19 is rotated around the hinge shaft 20, thereby completing the adjustment of the angle of the handrail 18.
[0042] Finally, it should be noted that the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.
Claims
1. Multidirectional adjustment structure for the armrest of an office chair, comprising a mounting element (1), characterized in that: The top of the mounting piece (1) is provided with two handrails (18), the bottom of the inside of the mounting piece (1) is symmetrically provided with two first mounting blocks (4), a first driven rod (3) is rotatably connected between the two first mounting blocks (4), first bevel gears (5) are fixedly connected to the two sides of the first driven rod (3) and penetrate the inside of the first mounting block (4), a worm gear (7) is arranged at the middle position of the outer wall of the first driven rod (3), a rotating rod (14) is rotatably connected to the front of the mounting piece (1), the side of the rotating rod (14) close to the mounting piece (1) extends to the inside of the mounting piece (1), and the side of the rotating rod (14) is connected with a worm (6), the worm (6) and the worm gear (7) are meshed with each other, an adjusting assembly is arranged at the position corresponding to the first bevel gear (5) in the inside of the mounting piece (1), a lifting assembly is arranged at the top of the adjusting assembly, and the handrails (18) are arranged on the top of the mounting piece (1) through the lifting assembly.
2. The multi-directional adjustment structure of an office chair armrest according to claim 1, characterized in that: The adjusting assembly comprises two second mounting blocks (8) which are fixedly connected to the inner walls of the mounting piece (1) in a symmetrical manner, a second driven rod (9) is rotatably arranged in the inside of the second mounting block (8) and penetrates the inside of the second mounting block (8), an internally threaded sleeve (11) is fixedly connected to the top of the second driven rod (9), the top of the internally threaded sleeve (11) extends to the outside of the mounting piece (1) and is connected with the lifting assembly, and a second bevel gear (10) is fixedly arranged at the bottom of the second driven rod (9), the second bevel gear (10) and the first bevel gear (5) are meshed with each other.
3. The multi-directional adjustment structure of an office chair armrest according to claim 1, characterized in that: The lifting assembly comprises a sliding sleeve (13) which is slidingly sleeved on the outside of the internally threaded sleeve (11), an adjusting threaded rod (12) is threadedly connected to the inner wall of the internally threaded sleeve (11), the top of the internally threaded sleeve (11) is in an open structure, the top of the adjusting threaded rod (12) extends to the outside of the internally threaded sleeve (11) and is fixedly connected to the top of the inside of the sliding sleeve (13), and a limiting assembly is arranged at the top of the back of the mounting piece (1).
4. The multi-directional adjustment structure of an office chair armrest according to claim 3, characterized in that: The limiting assembly comprises two first limiting rods (15) which are fixedly connected to the top of the back of the mounting piece (1), the first limiting rod (15) is in an "L" structure, a second limiting rod (16) is fixedly arranged at the position corresponding to the first limiting rod (15) on the back of the sliding sleeve (13), a limiting groove (17) penetrating the inside of the second limiting rod (16) is formed in the top of the second limiting rod (16), the top of the first limiting rod (15) penetrates the inside of the limiting groove (17), and the diameter of the first limiting rod (15) is matched with the width of the limiting groove (17).
5. The multi-directional adjustment structure of an office chair armrest according to claim 1, wherein: The bottom of the handrail (18) and both sides of the sliding sleeve (13) are symmetrically provided with hinged pieces (19), one side of the hinged piece (19) is provided with a hinged shaft (20), the hinged shaft (20) penetrates the inside of the adjusting screw rod (12) near one side of the hinged piece (19) and passes through the sliding sleeve (13) to dampen the hinged piece (19) on both sides of the sliding sleeve (13).
6. The multi-directional adjustment structure of an office chair armrest according to claim 4, characterized in that: The second limiting rod (16) is in an "L" shape structure, and the top of the second limiting rod (16) is not in contact with the bottom of the handrail (18).
7. The multi-directional adjustment structure of an office chair armrest according to claim 1, wherein: The mounting piece (1) is in a "U" shape structure, and the horizontal bending part of the mounting piece (1) is fixedly installed on the bottom of the seat.
8. The multi-directional adjustment structure of an office chair armrest according to claim 1, wherein: The front of the rotating rod (14) is fixedly installed with a holding ring.