Adjustable armrest structure of electric wheelchair
By designing an adjustable armrest structure, the problem of non-adjustable armrests in electric wheelchairs has been solved, achieving multi-directional adjustment and stability, adapting to the needs of users of different body types, and improving user comfort and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-27
AI Technical Summary
The armrests of existing electric wheelchairs lack adjustment functions, cannot adapt to the needs of users of different body types, and are prone to wobbling after a period of use due to insecure locking.
An adjustable handrail structure was designed, including a width adjustment rod, a vertical connecting rod, a height adjustment rod, a horizontal connecting rod, and a front-to-back adjustment rod. By using a combination of positioning pins, spring pins, and Torx nuts, the width, height, and front-to-back position of the handrail can be adjusted in multiple directions, and stability is ensured by a double fixing method using bolts and Torx nuts.
The handrails are multi-directionally adjustable to suit the needs of users of different body types, improving comfort. They also reduce swaying through a double-fixation system, ensuring stability during use.
Smart Images
Figure CN224039496U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a wheelchair accessory technical field more specifically, relate to a kind of adjustable armrest structure of electric wheelchair. BACKGROUND
[0002] Electric wheelchair is the new generation intelligent wheelchair that is formed by adding high-performance power driving device, intelligent control device, battery and other components on the basis of traditional manual wheelchair, with artificial control intelligent controller, can drive wheelchair to complete forward, backward, steering, standing, lying and other functions, is the high-tech product of modern precision machinery, intelligent numerical control, engineering mechanics and other fields.
[0003] At present, two armrests are usually installed on electric wheelchair, and the arms of users are supported by the armrests, but most of the armrests of existing electric wheelchair do not have adjusting function, as the body type of users is too different, the comfort requirements are different, the armrests cannot be adjusted to meet the needs of different customers, some armrests with adjusting function usually have only one adjusting direction, still cannot meet the requirements of many customers, and the armrests are not locked firmly after being used for a period of time, and will shake, therefore, the utility model provides a kind of adjustable armrest structure of electric wheelchair. UTILITY MODEL CONTENT
[0004] 1. Technical problem to be solved
[0005] In view of the problems in the prior art, the utility model aims to provide an adjustable armrest structure of electric wheelchair, to solve the problem that most of the armrests of existing electric wheelchair do not have adjusting function, as the body type of users is too different, the comfort requirements are different, the armrests cannot be adjusted to meet the needs of different customers, some armrests with adjusting function usually have only one adjusting direction, still cannot meet the requirements of many customers, and the armrests are not locked firmly after being used for a period of time, and will shake.
[0006] 2. Technical scheme
[0007] To solve the above problems, the utility model adopts the following technical scheme:
[0008] The adjustable armrest structure of the electric wheelchair comprises a width adjusting rod, one end of the width adjusting rod is fixedly connected with a vertical connecting rod, the vertical connecting rod is slidably connected with a height adjusting rod, the top end of the height adjusting rod is fixedly connected with a horizontal connecting rod, the horizontal connecting rod is slidably connected with a front and back adjusting rod, the top end of the front and back adjusting rod is fixedly connected with an armrest seat, one side end of the vertical connecting rod is fixedly connected with a positioning pin, a plurality of positioning holes are formed in the height adjusting rod, and the positioning pin penetrates through the vertical connecting rod and matches the plurality of positioning holes, the bottom end of the horizontal connecting rod is fixedly connected with a spring pin, a positioning opening is formed in the front and back adjusting rod, and the spring pin penetrates through the horizontal connecting rod and matches the positioning opening, one side end of the height adjusting rod is threadedly connected with a first plum blossom nut, and the first plum blossom nut penetrates through the height adjusting rod and corresponds to the vertical connecting rod, and the bottom end of the horizontal connecting rod is threadedly connected with a second plum blossom nut, and the first plum blossom nut penetrates through the horizontal connecting rod and corresponds to the front and back adjusting rod.
[0009] As a preferred scheme of the utility model, the bottom end of the width adjusting rod is provided with a positioning groove, and the positioning groove matches the bolt.
[0010] As a preferred scheme of the utility model, the bottom end of the front and back adjusting rod is detachably connected with a handle connecting block, and the handle connecting block is located on the front side of the horizontal connecting rod.
[0011] As a preferred scheme of the utility model, the armrest seat is provided with an inward protrusion.
[0012] As a preferred scheme of the utility model, the height adjusting rod is provided with a folding hole, and the positioning pin penetrates through the vertical connecting rod and matches the folding hole.
[0013] 3. Beneficial effects
[0014] Compared with the prior art, the utility model has the advantages that:
[0015] (1) In the scheme, the width adjusting rod, the vertical connecting rod and the horizontal connecting rod are all "I" shaped aluminum profiles, the width adjusting rod and the bottom of the electric wheelchair base are matched and slidably inserted and assembled, the height adjusting rod and the vertical connecting rod are matched and slidably inserted and assembled, and the front and back adjusting rod and the horizontal connecting rod are matched and slidably inserted and assembled, through the assembly of the I shaped aluminum profile and other aluminum profiles, the whole armrest material is thick and solid, and the armrest strength is increased.
[0016] (2) In the scheme, the handrail is installed on the electric wheelchair, the width of the handrail is adjusted by the insertion depth of the width adjusting rod at the bottom of the electric wheelchair base, the height adjusting rod is slidingly inserted on the vertical connecting rod, the height of the handrail can be adjusted through the cooperation of the positioning pin and the plurality of positioning holes, the front and rear adjusting rods are slidingly inserted on the horizontal connecting rod, the position of the handrail in the front and rear direction can be adjusted through the cooperation of the spring pin and the positioning hole, the design of the handrail adjusting structure can adjust the width, height and front and rear position, and has a quick release function for unexpected needs, the improved handrail adjusting structure can adapt to a more extensive user group, so that people of various heights and weights have more adjustment functions, and the use is more comfortable.
[0017] (3) In the scheme, after the width adjustment of the handrail on the electric wheelchair is completed, the width adjusting rod is clamped by a bolt, so that the handrail remains stable after the width adjustment, after the height adjustment of the handrail through the cooperation of the positioning pin and the positioning hole, the first plum nut is used for secondary fixing, after the position adjustment of the handrail in the front and rear direction through the cooperation of the spring pin and the positioning hole, the second plum nut is used for secondary positioning, and the positioning pin and the spring pin are double-fixed through the first plum nut and the second plum nut, so that the gap between the various profiles is reduced, and the handrail is not easy to shake during use, thereby ensuring the stability of the handrail. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is an assembly drawing of the handrail and the electric wheelchair of the utility model;
[0019] Figure 2 It is a front view of the utility model;
[0020] Figure 3 It is a perspective view of the utility model;
[0021] Figure 4 It is an explosion view of the utility model;
[0022] Figure 5 It is a perspective view of part of the structure in the utility model.
[0023] Explanation of reference numerals in the drawing:
[0024] 1, width adjusting rod; 2, vertical connecting rod; 3, height adjusting rod; 4, horizontal connecting rod; 5, front and rear adjusting rod; 6, handrail seat; 7, positioning pin; 8, positioning hole; 9, spring pin; 10, positioning hole; 11, positioning groove; 12, first plum nut; 13, second plum nut; 14, handle connecting block; 15, inward protrusion; 16, folding hole. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort fall within the protection scope of the present application.
[0026] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0027] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood in a broad sense, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication between two elements inside. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0028] Embodiment:
[0029] Please refer to Figures 1-5 A adjustable armrest structure of electric wheelchair, including width adjusting rod 1, one end of width adjusting rod 1 is fixedly connected with vertical connecting rod 2, vertical connecting rod 2 is slidably connected with height adjusting rod 3, the top of height adjusting rod 3 is fixedly connected with horizontal connecting rod 4, horizontal connecting rod 4 is slidably connected with front and rear adjusting rod 5, the top of front and rear adjusting rod 5 is fixedly connected with armrest seat 6, one side end of vertical connecting rod 2 is fixedly connected with positioning pin 7, a plurality of positioning holes 8 are formed in height adjusting rod 3, and positioning pin 7 penetrates vertical connecting rod 2 and matches with a plurality of positioning holes 8, the bottom of horizontal connecting rod 4 is fixedly connected with spring pin 9, positioning port 10 is formed in front and rear adjusting rod 5, and spring pin 9 penetrates horizontal connecting rod 4 and matches with positioning port 10, one side end of height adjusting rod 3 is threadedly connected with first plum blossom nut 12, and first plum blossom nut 12 penetrates height adjusting rod 3 and corresponds with vertical connecting rod 2, the bottom of horizontal connecting rod 4 is threadedly connected with second plum blossom nut 13, and first plum blossom nut 12 penetrates horizontal connecting rod 4 and corresponds with front and rear adjusting rod 5.
[0030] In this embodiment, the width adjusting rod 1, the vertical connecting rod 2, the height adjusting rod 3, the horizontal connecting rod 4 and the front and rear adjusting rod 5 are all made of aluminum profile, which has high strength. The width adjusting rod 1 is inserted into the corresponding clamping groove at the bottom of the electric wheelchair base and fixed by bolts. The width of the armrest can be adjusted by the insertion depth. The height adjusting rod 3 is slidingly inserted into the vertical connecting rod 2. The corresponding insertion of the positioning pin 7 and the plurality of positioning holes 8 can adjust the height of the armrest. After the height of the armrest is adjusted, the first plum nut 12 is tightened to tightly press the vertical connecting rod 2, thereby ensuring the stability of the height adjusting rod 3 after height adjustment. The front and rear adjusting rod 5 is slidingly inserted into the horizontal connecting rod 4. The corresponding insertion of the spring pin 9 and the positioning hole 10 can fix the front and rear adjusting rod 5, so that the front and rear adjusting rod 5 fixes the armrest seat 6 at the appropriate position, and the front and rear position adjustment of the armrest is completed. The second plum nut 13 is tightened to tightly press the front and rear adjusting rod 5, thereby ensuring the stability of the front and rear adjusting rod 5 after front and rear adjustment.
[0031] Specifically, the bottom end of the width adjusting rod 1 is provided with a positioning groove 11 matched with the bolt.
[0032] In this embodiment, the width adjusting rod 1 is used with the bolt through the positioning groove 11. After the width adjusting rod 1 is inserted into the electric wheelchair base, the bolt penetrates the electric wheelchair frame and the positioning groove 11 to press against the width adjusting rod 1, so that the width adjusting rod 1 remains fixed and prevents the armrest from moving.
[0033] Specifically, the bottom end of the front and rear adjusting rod 5 is detachably connected with a handle connecting block 14, and the handle connecting block 14 is located on the front side of the horizontal connecting rod 4.
[0034] In this embodiment, the handle connecting block 14 is used to connect the control handle of the electric wheelchair, which is convenient for the user to control the electric wheelchair.
[0035] Specifically, the armrest seat 6 is provided with an inwardly turned protrusion 15.
[0036] In this embodiment, the inwardly turned protrusion 15 inwardly turns to block the arm, preventing the user's arm from falling from both sides of the electric wheelchair.
[0037] Specifically, the height adjusting rod 3 is provided with a folding hole 16, and the positioning pin 7 penetrates the vertical connecting rod 2 and matches the folding hole 16.
[0038] In this embodiment, pulling the positioning pin 7 lowers the height of the armrest, so that the positioning pin 7 is inserted into the folding hole 16, thereby facilitating the folding of the electric wheelchair.
[0039] Working principle: the width adjusting rod 1 is inserted into the bottom of the electric wheelchair base, the width of the armrest is adjusted according to the insertion depth, after the armrest width is adjusted to the appropriate position, the width adjusting rod 1 is fixed on the bottom of the electric wheelchair base by using the bolt, so that the armrest is stable at the required width, the height adjusting rod 3 is slidingly inserted into the vertical connecting rod 2, the insertion between the positioning pin 7 and the plurality of positioning holes 8 is cancelled by pulling, the height of the armrest can be adjusted, after the height of the armrest is adjusted, the positioning pin 7 is elastically inserted into a positioning hole 8, so that the height of the armrest is stable, the first plum nut 12 is tightened to press the vertical connecting rod 2 through the height adjusting rod 3, so that the height of the armrest is further stable, the front and rear adjusting rod 5 is slidingly inserted into the horizontal connecting rod 4, the position of the armrest seat 6 in the front and rear direction is adjusted by pulling the spring pin 9, so that the armrest is adjusted in the front and rear direction, after the armrest is adjusted in the front and rear direction, the spring pin 9 is elastically inserted into the positioning hole 10, so that the armrest is stable, then the second plum nut 13 is tightened to press the front and rear adjusting rod 5, so that the armrest is further stable, preventing the armrest from shaking.
[0040] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. An adjustable armrest structure of an electrically powered wheelchair, comprising a width adjustment lever (1), characterized in that: One end of the width adjusting rod (1) is fixedly connected with a vertical connecting rod (2), a height adjusting rod (3) is slidably connected to the vertical connecting rod (2), a top end of the height adjusting rod (3) is fixedly connected with a horizontal connecting rod (4), a front and back adjusting rod (5) is slidably connected to the horizontal connecting rod (4), a top end of the front and back adjusting rod (5) is fixedly connected with a handrail seat (6), one side end of the vertical connecting rod (2) is fixedly connected with a positioning pin (7), a plurality of positioning holes (8) are formed in the height adjusting rod (3), and the positioning pin (7) penetrates through the vertical connecting rod (2) and is matched with the plurality of positioning holes (8), a bottom end of the horizontal connecting rod (4) is fixedly connected with a spring pin (9), a positioning opening (10) is formed in the front and back adjusting rod (5), and the spring pin (9) penetrates through the horizontal connecting rod (4) and is matched with the positioning opening (10), one side end of the height adjusting rod (3) is threadedly connected with a first plum blossom nut (12), and the first plum blossom nut (12) penetrates through the height adjusting rod (3) and corresponds to the vertical connecting rod (2), a bottom end of the horizontal connecting rod (4) is threadedly connected with a second plum blossom nut (13), and the first plum blossom nut (12) penetrates through the horizontal connecting rod (4) and corresponds to the front and back adjusting rod (5).
2. An adjustable armrest structure for an electrically powered wheelchair according to claim 1, characterized in that: A positioning groove (11) is formed in the bottom end of the width adjusting rod (1), and the positioning groove (11) is matched with a bolt.
3. An adjustable armrest structure for an electrically powered wheelchair according to claim 2, wherein: A handle connecting block (14) is detachably connected to the bottom end of the front and back adjusting rod (5), and the handle connecting block (14) is located on the front side of the horizontal connecting rod (4).
4. An adjustable armrest structure for an electrically powered wheelchair vehicle as defined in claim 3, wherein: An inverted protrusion (15) is arranged on the handrail seat (6).
5. An adjustable armrest structure for an electrically powered wheelchair according to claim 4, wherein: A folding hole (16) is formed in the height adjusting rod (3), and the positioning pin (7) penetrates through the vertical connecting rod (2) and is matched with the folding hole (16).