Foldable wheelchair armrest

Abstract

The utility model is applicable to the technical field of wheelchair armrests, and provides a foldable wheelchair armrest which comprises a mounting seat, a connecting rod and a connecting rod, the transverse shaft is rotationally mounted on the inner wall of the mounting seat; the rotating plate is fixedly arranged on the transverse shaft in a sleeving manner; the fixed handrail is fixedly mounted on the rotating plate; the telescopic handrail is mounted on the inner wall of the fixed handrail in a sliding manner; the length adjusting mechanism is arranged on the inner wall of the fixed handrail and is used for adjusting the extension length of the telescopic handrail; and the folding locking mechanism is mounted on the mounting seat and is used for folding and locking the fixed handrail and the telescopic handrail. The foldable wheelchair armrest provided by the scheme can be conveniently folded and stored, interference caused when a patient is moved to a wheelchair can be avoided, the length of the wheelchair armrest can be conveniently adjusted, and the applicability is high.

Description

Technical Field

[0001] This utility model belongs to the field of wheelchair armrest technology, and in particular relates to a foldable wheelchair armrest. Background Technology

[0002] Wheelchair armrests are an important component of wheelchairs, primarily serving to support the arms and help users achieve balance and stability. However, existing wheelchair armrests have a fixed structure and often cannot be folded for storage. Therefore, the armrests may cause interference when moving a patient into the wheelchair, and their length is often not adjustable, resulting in poor usability. Utility Model Content

[0003] This utility model provides a foldable wheelchair armrest, which aims to solve the problems mentioned in the background art, such as the inability to fold and store existing wheelchair armrests and the inability to adjust their length.

[0004] To solve the above problems, this utility model is implemented as follows: a foldable wheelchair armrest, comprising: a mounting base; a horizontal shaft rotatably mounted on the inner wall of the mounting base; a rotating plate fixedly sleeved on the horizontal shaft; a fixed armrest fixedly mounted on the rotating plate; a telescopic armrest slidably mounted on the inner wall of the fixed armrest; a length adjustment mechanism mounted on the inner wall of the fixed armrest, the length adjustment mechanism being used to adjust the extension length of the telescopic armrest; and a folding locking mechanism mounted on the mounting base, the folding locking mechanism being used to fold and lock the fixed armrest and the telescopic armrest.

[0005] Preferably, one end of the telescopic handrail is provided with a sliding hole and a screw hole, and an annular limiting plate is fixedly installed on the inner wall of the sliding hole.

[0006] Preferably, the length adjustment mechanism includes: a screw rod rotatably mounted on the inner wall of the fixed handrail and threadedly connected to the inner wall of the screw hole; a rotating shaft rotatably mounted on the bottom of the fixed handrail; two bevel gears fixedly mounted on the top end of the rotating shaft and the screw rod respectively and meshing with each other; and a knob fixedly mounted on the bottom end of the rotating shaft.

[0007] Preferably, a limiting rod is fixedly installed on the inner wall of the fixed handrail, one end of the limiting rod extends into the interior of the sliding hole, the limiting rod is slidably connected to the inner wall of the annular limiting plate, and a limiting block is fixedly installed on one end of the limiting rod, the limiting block being slidably connected to the inner wall of the sliding hole.

[0008] Preferably, the bottom of the mounting base has a rectangular opening, and the rotating plate has multiple slots.

[0009] Preferably, the folding locking mechanism includes: a U-shaped plate fixedly installed at the bottom of the mounting base; a plurality of sliding rods slidably installed on the U-shaped plate; a rectangular plate fixedly installed at the top of the plurality of sliding rods; a locking plate fixedly installed on the rectangular plate and adapted to the locking slot; a plurality of springs slidably sleeved on the plurality of sliding rods respectively; a connecting plate fixedly installed at the bottom of the plurality of sliding rods; and a pull ring fixedly installed at the bottom of the connecting plate.

[0010] Preferably, the fixed handrail is fitted with a woven sleeve, and the inner wall of the woven sleeve is provided with a silicone cushioning layer.

[0011] Preferably, a mounting plate is fixedly mounted on one side of the mounting base, and the mounting plate has multiple mounting holes.

[0012] Compared with related technologies, the foldable wheelchair armrest provided by this utility model has the following beneficial effects:

[0013] Compared to existing technologies, this solution provides a foldable wheelchair armrest with a mounting base serving as a stable foundation to support the entire armrest structure. A horizontal axis is rotatably mounted on the inner wall of the mounting base, allowing a rotating plate to rotate around it, enabling the armrest to fold and increasing ease of use and space utilization. The rotating plate is fixedly fitted onto the horizontal axis, serving as a mounting platform for the fixed armrest, ensuring the stability and robustness of the armrest structure. The fixed armrest is fixedly mounted on the rotating plate, providing stable support for the user. The telescopic armrest slides on the inner wall of the fixed armrest, allowing for length adjustment according to user needs, providing a more flexible user experience. A length adjustment mechanism is mounted on the inner wall of the fixed armrest for precise adjustment of the telescopic armrest's extension length to meet the needs of different users or different scenarios. A folding locking mechanism is mounted on the mounting base, allowing the armrest to be folded and locked when not in use, reducing space occupation while ensuring the safety and stability of the armrest in the folded state. These components together constitute a practical and convenient foldable wheelchair armrest, greatly enhancing the wheelchair user experience. Attached Figure Description

[0014] Figure 1 This is a front sectional view of a foldable wheelchair armrest provided by this utility model;

[0015] Figure 2 for Figure 1 A three-dimensional assembly structure diagram of the telescopic handrail and the woven sleeve;

[0016] Figure 3 for Figure 1 An enlarged structural diagram of part A shown in the figure;

[0017] Figure 4 for Figure 1The diagram shows an enlarged view of part B.

[0018] Reference numerals: 1. Mounting base; 2. Horizontal axis; 3. Rotating plate; 4. Fixed handrail; 5. Telescopic handrail; 6. Sliding hole; 7. Annular limiting plate; 8. Screw hole; 9. Screw; 10. Rotating shaft; 11. Bevel gear; 12. Knob; 13. Limiting rod; 14. Limiting block; 15. Rectangular opening; 16. Slot; 17. U-shaped plate; 18. Sliding rod; 19. Spring; 20. Rectangular plate; 21. Clamping plate; 22. Connecting plate; 23. Pull ring; 24. Braided sleeve; 25. Silicone buffer layer; 26. Mounting plate; 27. Mounting hole. Detailed Implementation

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects, not to describe a particular order; the terms "inner," "outer," "left," and "right" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] This utility model embodiment provides a foldable wheelchair armrest, such as Figure 1-4As shown, the foldable wheelchair armrest includes: a mounting base 1; a horizontal shaft 2 rotatably mounted on the inner wall of the mounting base 1; a rotating plate 3 fixedly sleeved on the horizontal shaft 2; a fixed armrest 4 fixedly mounted on the rotating plate 3; a telescopic armrest 5 slidably mounted on the inner wall of the fixed armrest 4; a length adjustment mechanism mounted on the inner wall of the fixed armrest 4, the length adjustment mechanism being used to adjust the extension length of the telescopic armrest 5; and a folding locking mechanism mounted on the mounting base 1, the folding locking mechanism being used to fold and lock the fixed armrest 4 and the telescopic armrest 5.

[0022] In this embodiment, the mounting base 1 serves as a stable foundation, supporting the entire armrest structure. The horizontal shaft 2 is rotatably mounted on the inner wall of the mounting base 1, allowing the rotating plate 3 to rotate around it, thus realizing the folding function of the armrest and increasing the convenience of use and space utilization. The rotating plate 3 is fixedly sleeved on the horizontal shaft 2, serving as the mounting platform for the fixed armrest 4, ensuring the stability and firmness of the armrest structure. The fixed armrest 4 is fixedly mounted on the rotating plate 3, providing stable support for the user. The telescopic armrest 5 is slidably mounted on the inner wall of the fixed armrest 4, and its length can be adjusted according to user needs, providing a more flexible user experience. The length adjustment mechanism is mounted on the inner wall of the fixed armrest 4, used to precisely adjust the extension length of the telescopic armrest 5 to meet the needs of different users or different scenarios. The folding and locking mechanism is mounted on the mounting base 1, allowing the armrest to be folded and locked when not in use, reducing space occupation, while ensuring the safety and stability of the armrest in the folded state. These components together constitute a practical and convenient foldable wheelchair armrest, greatly improving the wheelchair user experience.

[0023] In a further preferred embodiment of the present invention, one end of the telescopic handrail 5 is provided with a sliding hole 6 and a screw hole 8, and an annular limiting plate 7 is fixedly installed on the inner wall of the sliding hole 6.

[0024] In this embodiment, the telescopic handrail 5 can be guided and limited by the sliding hole 6 in conjunction with the limiting rod 13 and the limiting block 14, and the extension length of the telescopic handrail 5 can be adjusted by the screw hole 8 in conjunction with the length adjustment mechanism.

[0025] In a further preferred embodiment of the present invention, the length adjustment mechanism includes: a screw 9 rotatably mounted on the inner wall of the fixed handrail 4 and threadedly connected to the inner wall of the screw hole 8; a rotating shaft 10 rotatably mounted on the bottom of the fixed handrail 4; two bevel gears 11 respectively fixedly mounted on the top end of the rotating shaft 10 and the screw 9 and meshing with each other; and a knob 12 fixedly mounted on the bottom end of the rotating shaft 10.

[0026] In this embodiment, the knob 12 drives the rotating shaft 10 to rotate, and the rotating shaft 10 drives the screw 9 to rotate through two bevel gears 11. The screw 9 rotates threadedly on the inner wall of the screw hole 8, which can drive the telescopic handrail 5 to move laterally, thereby adjusting the extension length of the telescopic handrail 5.

[0027] In a further preferred embodiment of the present invention, a limiting rod 13 is fixedly installed on the inner wall of the fixed handrail 4, one end of the limiting rod 13 extends into the interior of the sliding hole 6, the limiting rod 13 is slidably connected to the inner wall of the annular limiting plate 7, and a limiting block 14 is fixedly installed on one end of the limiting rod 13, the limiting block 14 being slidably connected to the inner wall of the sliding hole 6.

[0028] In this embodiment, the telescopic handrail 5 can be guided and limited by the sliding of the limiting block 14 at one end of the limiting rod 13 on the inner wall of the sliding hole 6.

[0029] In a further preferred embodiment of the present invention, a rectangular opening 15 is provided at the bottom of the mounting base 1, and a plurality of slots 16 are provided on the rotating plate 3.

[0030] In this embodiment, the fixed handrail 4 and the telescopic handrail 5 can be folded and locked by multiple slots 16 and a locking mechanism.

[0031] In a further preferred embodiment of the present invention, the folding locking mechanism includes: a U-shaped plate 17 fixedly installed at the bottom of the mounting base 1; a plurality of sliding rods 18 slidably installed on the U-shaped plate 17; a rectangular plate 20 fixedly installed at the top of the plurality of sliding rods 18; a locking plate 21 fixedly installed on the rectangular plate 20 and adapted to the locking groove 16; a plurality of springs 19 respectively slidably sleeved on the plurality of sliding rods 18; a connecting plate 22 fixedly installed at the bottom of the plurality of sliding rods 18; and a pull ring 23 fixedly installed at the bottom of the connecting plate 22.

[0032] In this embodiment, the rectangular plate 20 is rebounded by multiple springs 19, which can cause the locking plate 21 to be inserted into the slot 16, thereby locking the rotating plate 3. When it is necessary to fold the fixed handrail 4 and the telescopic handrail 5, the pull ring 23 is pulled down. The pull ring 23 drives the locking plate 21 to move downward through the connecting plate 22, multiple sliding rods 18 and the rectangular plate 20, thereby separating the locking plate 21 from the slot 16, so that the fixed handrail 4 and the telescopic handrail 5 can be rotated and folded.

[0033] In a further preferred embodiment of the present invention, a woven sleeve 24 is fitted onto the fixed handrail 4, and a silicone buffer layer 25 is provided on the inner wall of the woven sleeve 24.

[0034] In this embodiment, the woven sleeve 24 and the silicone cushioning layer 25 can improve the comfort of the patient's palm when placed on the telescopic armrest 5.

[0035] In a further preferred embodiment of the present invention, a mounting plate 26 is fixedly mounted on one side of the mounting base 1, and the mounting plate 26 is provided with a plurality of mounting holes 27.

[0036] In this embodiment, the wheelchair armrests can be installed on the wheelchair using the mounting plate 26 and its multiple mounting holes 27, along with bolts.

[0037] In summary, compared with related technologies, this wheelchair armrest can be folded and stored more conveniently, avoiding interference when moving the patient to the wheelchair. It can also be adjusted in length more easily, making it highly versatile.

[0038] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A foldable wheelchair armrest, characterized in that, include: Mounting base; Rotate the horizontal shaft mounted on the inner wall of the mounting base; A rotating plate fixedly sleeved on the horizontal axis; A fixed handrail is fixedly installed on the rotating plate; A telescopic handrail that is slidably installed on the inner wall of the fixed handrail; A length adjustment mechanism is installed on the inner wall of the fixed handrail, the length adjustment mechanism being used to adjust the extension length of the telescopic handrail; A folding locking mechanism is installed on the mounting base, which is used to fold and lock the fixed handrail and the telescopic handrail.

2. The foldable wheelchair armrest as described in claim 1, characterized in that, One end of the telescopic handrail is provided with a sliding hole and a screw hole, and an annular limiting plate is fixedly installed on the inner wall of the sliding hole.

3. The foldable wheelchair armrest as described in claim 2, characterized in that, The length adjustment mechanism includes: A screw rod is rotatably installed on the inner wall of the fixed handrail and threadedly connected to the inner wall of the screw hole; Rotate the pivot shaft installed at the bottom of the fixed handrail; Two bevel gears, respectively fixedly installed on the top of the rotating shaft and on the screw, and meshing with each other; A knob that is fixedly installed at the bottom end of the rotating shaft.

4. The foldable wheelchair armrest as described in claim 2, characterized in that, A limiting rod is fixedly installed on the inner wall of the fixed handrail. One end of the limiting rod extends into the interior of the sliding hole. The limiting rod is slidably connected to the inner wall of the annular limiting plate. A limiting block is fixedly installed on one end of the limiting rod. The limiting block is slidably connected to the inner wall of the sliding hole.

5. The foldable wheelchair armrest as described in claim 1, characterized in that, The bottom of the mounting base has a rectangular opening, and the rotating plate has multiple slots.

6. The foldable wheelchair armrest as described in claim 5, characterized in that, The folding locking mechanism includes: A U-shaped plate fixedly installed at the bottom of the mounting base; Multiple sliding rods are slidably mounted on the U-shaped plate; A rectangular plate fixedly installed at the top of the multiple sliding rods; A card plate that is fixedly installed on the rectangular plate and adapted to the card slot; Multiple springs that are respectively slidably sleeved on multiple sliding rods; A connecting plate is fixedly installed at the bottom end of multiple sliding rods; A pull ring is fixedly installed at the bottom of the connecting plate.

7. The foldable wheelchair armrest as described in claim 1, characterized in that, The fixed handrail is fitted with a woven sleeve, and the inner wall of the woven sleeve is provided with a silicone cushioning layer.

8. The foldable wheelchair armrest as described in claim 1, characterized in that, A mounting plate is fixedly installed on one side of the mounting base, and the mounting plate has multiple mounting holes.

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