Adjustable armrest structure and chair

By designing an adjustable armrest structure, the height adjustment of the armrest plate is achieved using threads and gear systems, the problem of fixing the height of the existing chair armrest is solved, and the height adjustment of the armrest for different body shapes and seating positions is achieved.

CN222764973UActive Publication Date: 2025-04-18DONG GUAN CITY CHING XIN IND CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202421554444.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-02
Publication Date
2025-04-18
Estimated Expiration
2034-07-02

AI Technical Summary

Technical Problem

The height of the existing chair armrests is fixed and cannot be adjusted according to the needs of the user, making it impossible to be suitable for users of different body types and cannot meet the height requirements of the handrails under different sitting positions.

Method used

An adjustable handrail structure is designed, including a handrail plate and a height adjustment assembly. The height adjustment assembly consists of a mounting base, a threaded rod, a movable mounting block, a sliding assembly and a drive motor, and the height adjustment of the armrest plate is achieved through the thread and gear system.

Benefits of technology

The height adjustment of the handrail is realized, which is convenient and simple to operate. It is suitable for users of different body types and meets the height requirements of the handrail in different sitting positions.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222764973U_ABST
    Figure CN222764973U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of furniture, in particular to an adjustable handrail structure which comprises a handrail plate and a height adjusting assembly connected to the bottom of the handrail plate. The height adjusting assembly comprises a mounting base, a first open groove, a second open groove, a first threaded rod, a first mounting block, a second threaded rod and a second mounting block, wherein the first open groove and the second open groove are formed in the two sides of the mounting base respectively; the first threaded rod is arranged in the first open groove; the first mounting block is movably connected to the first threaded rod; the first movable rod and the second movable rod are respectively connected to one end of the first mounting block and one end of the second mounting block; a first sliding assembly and a second sliding assembly are arranged at the bottom of the armrest plate, and the first sliding assembly and the second sliding assembly are rotationally connected with the first movable rod and the second movable rod correspondingly; and the first movable rod is rotationally connected with the second movable rod. The utility model provides the adjustable armrest structure and the chair which are adjustable in height and convenient to use.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to an adjustable armrest structure and a chair. Background Art

[0002] A chair is a piece of furniture for daily life, a kind of seat with a backrest and armrests. Modern chairs pursue beauty and fashion. Some chairs are no longer just seats. With the combination of technology, they make human life more convenient.

[0003] The height of the existing chair armrests is generally fixed during the production process, so users cannot adjust the armrest height according to their needs. Therefore, the existing chair armrests have a large height limitation, cannot be suitable for users of different body shapes, and cannot meet the user's requirements for armrest height in different sitting postures. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide an adjustable armrest structure and a chair with adjustable height and convenient use.

[0005] The utility model adopts the following technical solutions:

[0006] An adjustable armrest structure includes a structural body applied to a chair, the structural body includes an armrest plate, a height adjustment component connected to the bottom of the armrest plate; the height adjustment component includes a mounting seat, a first slot and a second slot respectively opened on both sides of the mounting seat, a first threaded rod arranged inside the first slot, a first mounting block movably connected to the first threaded rod, a second threaded rod arranged inside the second slot, a second mounting block movably connected to the second threaded rod, a first movable rod and a second movable rod respectively connected to one end of the first mounting block and the second mounting block; a first sliding component and a second sliding component are opened at the bottom of the armrest plate, and the first sliding component and the second sliding component are respectively rotatably connected to the first movable rod and the second movable rod; the first movable rod and the second movable rod are rotatably connected.

[0007] A further improvement to the above technical solution is that limit assemblies are respectively provided on both sides between the armrest plate and the mounting seat, and the limit assemblies include a cylinder, a limit groove and a limit rod, the limit groove is provided inside the cylinder, and the limit rod is movably connected to the limit groove.

[0008] A further improvement to the above technical solution is that the bottom of the cylinder is fixed above the mounting seat, and one end of the limiting rod away from the cylinder is fixedly connected to the bottom of the armrest.

[0009] A further improvement to the above technical solution is that the first mounting block is connected to the first threaded rod via threads, and the second mounting block is connected to the second threaded rod via threads.

[0010] A further improvement to the above technical solution is that the first threaded rod is provided with a first thread, the second threaded rod is provided with a second thread, the rear end of the first threaded rod is connected to the front end of the second threaded rod, and the thread rotation directions of the first thread and the second thread are arranged in opposite directions.

[0011] A further improvement to the above technical solution is that an end of the first threaded rod facing away from the second threaded rod is connected to a first gear, the first gear is meshingly connected to a second gear, and the second gear is connected to a driving motor.

[0012] A further improvement to the above technical solution is that the first sliding assembly includes a first sliding block and a first sliding rod slidably connected to the first sliding block, a first sliding groove is provided on the right side of the armrest plate, and the first sliding rod is fixed inside the first sliding groove.

[0013] A further improvement to the above technical solution is that the second sliding assembly includes a second slider and a second sliding rod slidably connected to the second slider, a second sliding groove is provided on the left side of the armrest plate, and the second sliding rod is fixed inside the second sliding groove.

[0014] A chair comprises a backrest, a cushion portion connected to the backrest, and armrest portions respectively arranged on both sides of the cushion portion, wherein the armrest portion comprises an adjustable armrest structure.

[0015] A further improvement to the above technical solution is that the armrest portion is provided with a control panel for controlling the height adjustment component, and the control panel is fixed to an upper surface of one side of the armrest board.

[0016] The beneficial effects of the utility model are:

[0017] The utility model can realize the height adjustment of the armrest, and the adjustment is convenient and the operation is simple. During use, when the armrest board needs to be raised and adjusted in height, the first threaded rod and the second threaded rod drive the first mounting block and the second mounting block to move closer to each other in the first slot and the second slot through the action of threads with opposite rotation directions, and at this time, the first movable rod and the second movable rod are driven to rotate towards each other, so that the sliders of the two sliding assemblies move closer to each other on the corresponding sliding rods, and the armrest board is raised; when the armrest board needs to be lowered and adjusted in height, the first threaded rod and the second threaded rod drive the first mounting block and the second mounting block to move away from each other in the first slot and the second slot through the action of threads with opposite rotation directions, and at this time, the first movable rod and the second movable rod are driven to rotate towards each other, so that the sliders of the two sliding assemblies move away from each other on the corresponding sliding rods, and the armrest board is lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the adjustable armrest structure of the utility model;

[0019] Figure 2 for Figure 1 A partial enlarged view of circle A of the adjustable handrail structure;

[0020] Figure 3 for Figure 1 A partial enlarged view of circle B of the adjustable handrail structure;

[0021] Figure 4 is a cross-sectional view of the chair of the utility model;

[0022] Figure 5 for Figure 4 A partial enlarged view of circle C of the chair;

[0023] Figure 6 for Figure 4 Schematic diagram of the external structure of the chair;

[0024] Numbers in the figure:

[0025] 10. Structural body;

[0026] 20. Armrest board; 30. Height adjustment assembly;

[0027] 31. mounting seat; 32. first slot; 33. second slot; 34. first threaded rod; 35. first mounting block; 36. second threaded rod; 37. second mounting block; 38. first movable rod; 39. second movable rod;

[0028] 40. A first sliding assembly;

[0029] 41. first sliding block; 42. first sliding rod; 43. first sliding groove;

[0030] 50. A second sliding assembly;

[0031] 51. second sliding block; 52. second sliding rod; 53. second sliding groove;

[0032] 60. Limiting assembly; 61. Cylinder; 62. Limiting groove; 63. Limiting rod;

[0033] 70. first gear; 71. second gear; 72. driving motor;

[0034] 80. backrest; 81. cushion;

[0035] 90. Armrest; 91. Control panel. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] In the description of the present invention, it should be noted that the terms "vertical direction", "upper", "lower", "horizontal" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] like Figures 1 to 5 As shown, an adjustable armrest structure includes a structural body 10 applied to a chair, the structural body 10 includes an armrest plate 20, and a height adjustment component 30 connected to the bottom of the armrest plate 20; the height adjustment component 30 includes a mounting seat 31, a first slot 32 and a second slot 33 respectively opened on both sides of the mounting seat 31, a first threaded rod 34 arranged inside the first slot 32, a first mounting block 35 movably connected to the first threaded rod 34, a second threaded rod 36 arranged inside the second slot 33, a second mounting block 37 movably connected to the second threaded rod 36, and a first movable rod 38 and a second movable rod 39 respectively connected to one end of the first mounting block 35 and the second mounting block 37; a first sliding component 40 and a second sliding component 50 are opened at the bottom of the armrest plate 20, and the first sliding component 40 and the second sliding component 50 are respectively rotatably connected to the first movable rod 38 and the second movable rod 39; the first movable rod 38 and the second movable rod 39 are rotatably connected.

[0040] Furthermore, the two sides between the armrest board 20 and the mounting seat 31 are respectively provided with a limit assembly 60, the limit assembly 60 comprises a cylinder 61, a limit groove 62 and a limit rod 63, the limit groove 62 is arranged inside the cylinder 61, and the limit rod 63 is movably connected with the limit groove 62; the bottom of the cylinder 61 is fixed above the mounting seat 31, and one end of the limit rod 63 away from the cylinder 61 is fixedly connected with the bottom of the armrest board 20. With such a configuration, when the armrest board 20 rises or falls, it can remain stable during the rising or falling process under the action of the cylinder 61 and the limit rod 63, and the practicality is strong.

[0041] Furthermore, the first mounting block 35 is connected to the first threaded rod 34 through threads, and the second mounting block 37 is connected to the second threaded rod 36 through threads.

[0042] Furthermore, the first threaded rod 34 is provided with a first thread, the second threaded rod 36 is provided with a second thread, the rear end of the first threaded rod 34 is connected to the front end of the second threaded rod 36, and the first thread and the second thread are arranged in opposite directions.

[0043] Furthermore, the first threaded rod 34 is connected to the first gear 70 at one end away from the second threaded rod 36, the first gear 70 is meshedly connected to the second gear 71, and the second gear 71 is connected to the driving motor 72. When the armrest board 20 rises, the driving motor 72 is started, the driving motor 72 drives the second gear 71 to rotate, the second gear 71 drives the second gear 71 to rotate, and the first gear 70 drives the first threaded rod 34 to rotate; when the armrest board 20 descends, the driving motor 72 is started, the driving motor 72 drives the second gear 71 to rotate in the opposite direction, the second gear 71 drives the second gear 71 to rotate in the opposite direction, and the first gear 70 drives the first threaded rod 34 to rotate in the opposite direction.

[0044] Furthermore, the first sliding assembly 40 includes a first slider 41 and a first sliding rod 42 slidably connected to the first slider 41, a first sliding groove 43 is provided on the right side of the armrest board 20, and the first sliding rod 42 is fixed inside the first sliding groove 43; the second sliding assembly 50 includes a second slider 51 and a second sliding rod 52 slidably connected to the second slider 51, a second sliding groove 53 is provided on the left side of the armrest board 20, and the second sliding rod 52 is fixed inside the second sliding groove 53.

[0045] like Figure 6As shown, a chair comprises a backrest 80, a cushion 81 connected to the backrest 80, and armrests 90 respectively arranged on both sides of the cushion 81, wherein the armrest 90 comprises an adjustable armrest structure; the armrest 90 is provided with a control panel 91 for controlling the height adjustment assembly 30, and the control panel 91 is fixed to the upper surface of one side of the armrest board 20. Through the control panel 91, the drive motors 72 inside the armrests 90 on both sides can be started or shut down to achieve the height adjustment of the armrests, so that the user can adjust the armrests 90 through the control panel 91, thereby improving the convenience of use.

[0046] The working principle of the utility model is:

[0047] When in use, when the armrest board 20 needs to be raised and adjusted in height, the drive motor 72 is started, the drive motor 72 drives the second gear 71 to rotate, the second gear 71 drives the second gear 71 to rotate, the first gear 70 drives the first threaded rod 34 to rotate, the first threaded rod 34 and the second threaded rod 36 drive the first mounting block 35 and the second mounting block 37 to move closer to each other in the first slot 32 and the second slot 33 through the action of threads with opposite rotation directions, and at this time, the first movable rod 38 and the second movable rod 39 are driven to rotate towards each other, so that the sliders of the two sliding assemblies move closer to each other on the corresponding sliding rods, and the armrest board 20 is lifted;

[0048] When the armrest 20 needs to be lowered for height adjustment, the drive motor 72 is started, and the drive motor 72 drives the second gear 71 to rotate in the opposite direction, and the second gear 71 drives the second gear 71 to rotate in the opposite direction, and the first gear 70 drives the first threaded rod 34 to rotate in the opposite direction, and the first threaded rod 34 and the second threaded rod 36 drive the first mounting block 35 and the second mounting block 37 to move away from each other in the first slot 32 and the second slot 33 through the action of threads with opposite rotation directions, and at this time, the first movable rod 38 and the second movable rod 39 are driven to rotate in opposite directions, so that the sliders of the two sliding assemblies move away from each other on the corresponding sliding rods, and the armrest 20 is lowered.

[0049] The above only expresses the preferred technical solution of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. An adjustable armrest structure, comprising a structural body applied to a chair, characterized in that: The structural body includes an armrest plate and a height adjustment component connected to the bottom of the armrest plate; the height adjustment component includes a mounting seat, a first slot and a second slot respectively opened on both sides of the mounting seat, a first threaded rod arranged inside the first slot, a first mounting block movably connected to the first threaded rod, a second threaded rod arranged inside the second slot, a second mounting block movably connected to the second threaded rod, and a first movable rod and a second movable rod respectively connected to one end of the first mounting block and the second mounting block; a first sliding component and a second sliding component are opened at the bottom of the armrest plate, and the first sliding component and the second sliding component are respectively rotatably connected to the first movable rod and the second movable rod; the first movable rod and the second movable rod are rotatably connected.

2. The adjustable armrest structure according to claim 1, characterized in that: Limiting components are respectively arranged on both sides between the armrest plate and the mounting seat. The limiting components include a cylinder, a limiting groove and a limiting rod. The limiting groove is arranged inside the cylinder, and the limiting rod is movably connected to the limiting groove.

3. The adjustable armrest structure according to claim 2, characterized in that: The bottom of the cylinder is fixed above the mounting seat, and one end of the limiting rod away from the cylinder is fixedly connected to the bottom of the armrest plate.

4. The adjustable armrest structure according to claim 1, characterized in that: The first mounting block is connected to the first threaded rod via threads, and the second mounting block is connected to the second threaded rod via threads.

5. The adjustable armrest structure according to claim 1, characterized in that: The first threaded rod is provided with a first thread, the second threaded rod is provided with a second thread, the rear end of the first threaded rod is connected to the front end of the second threaded rod, and the first thread and the second thread are arranged in opposite directions.

6. The adjustable armrest structure according to claim 5, characterized in that: One end of the first threaded rod facing away from the second threaded rod is connected with a first gear, the first gear is meshedly connected with a second gear, and the second gear is connected with a driving motor.

7. The adjustable armrest structure according to claim 1, characterized in that: The first sliding assembly includes a first sliding block and a first sliding rod slidably connected to the first sliding block. A first sliding groove is provided on the right side of the armrest plate, and the first sliding rod is fixed inside the first sliding groove.

8. The adjustable armrest structure according to claim 1, characterized in that: The second sliding assembly includes a second sliding block and a second sliding rod slidably connected to the second sliding block. A second sliding groove is provided on the left side of the armrest plate, and the second sliding rod is fixed inside the second sliding groove.

9. A chair comprising a backrest, a cushion connected to the backrest, and armrests respectively arranged on both sides of the cushion, characterized in that: The armrest portion comprises the adjustable armrest structure according to any one of claims 1-8.

10. The chair according to claim 9, characterized in that The armrest portion is provided with a control panel for controlling a height adjustment component, and the control panel is fixed to an upper surface of one side of the armrest plate.