Wheelchair backrest folder
By designing the wheelchair back folder, the bolts and connection holes are used to cooperate with the backrest to achieve folding and angle adjustment, solving the problem that traditional wheelchair backs cannot be folded and angled adjustment, improving the portability and storage convenience of the wheelchair, and enhancing the user's comfort.
Patent Information
- Application Number
- CN202421245863.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-03
AI Technical Summary
The back of a traditional wheelchair cannot be folded or adjusted, which takes up a large space and is inconvenient for portability and storage. At the same time, the user cannot adjust the angle of the backrest according to individual comfort, which may lead to discomfort for long-term use.
A wheelchair back folder is designed, adopting two sets of folder mechanisms, including a backrest movable kit and a wheelchair clamping piece, which can be used to cooperate with the connecting hole to achieve folding and angle adjustment of the backrest.
It effectively reduces the space occupied during wheelchair storage, facilitates carrying and storing, and allows users to adjust the backrest angle according to individual comfort, avoiding discomfort for long-term use.
Smart Images
Figure CN222640789U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wheelchair backrest folding devices, in particular to a wheelchair backrest folding device. Background Art
[0002] In the prior art, a wheelchair is usually composed of a solid metal frame and a seat cushion, and its backrest is fixed to the rear of the wheelchair frame. However, there are some problems and defects in the fixing method of the traditional wheelchair backrest. First, the traditional wheelchair backrest is often unable to be folded or adjusted in angle, resulting in the wheelchair occupying a large space when stored or used, which is inconvenient to carry and store. Secondly, the traditional backrest fixing method makes it impossible for the wheelchair user to adjust the angle of the backrest according to individual comfort, which may cause discomfort during long-term use. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a wheelchair backrest folding device which can effectively reduce the space occupied by the wheelchair when it is stored, facilitate carrying and storage, and can adjust the angle of the backrest, so that the user can adjust the angle of the backrest according to individual comfort and avoid discomfort caused by long-term use.
[0004] Technical Solution
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wheelchair backrest folding device, comprising two groups of folding device mechanisms, the folding device mechanisms comprising a backrest movable kit and a wheelchair clamping member, two groups of connecting holes are provided on both sides of the outer wall of the backrest movable kit, two groups of connecting plates are fixedly installed on the bottom of the backrest movable kit by bolts, each group of connecting plates is provided with a slideway, mounting holes are provided on both sides of the top of the wheelchair clamping member and on two groups of adjustable angle fixed foot plates, the wheelchair clamping member is rotatably installed on the two groups of connecting plates by the cooperation of the connecting pin and the mounting hole, and the top of the wheelchair clamping member is provided on both sides The adjustable angle fixed foot plates are installed by rotating in coordination with the connecting pin and the mounting hole, arc grooves are provided at the bottom of the two sets of adjustable angle fixed foot plates, limit pins are slidably arranged on the two sets of slideways, lever pull rods are provided on the fixed sleeves of the limit pins, both ends of the limit pins are clamped in the two sets of arc grooves, angle adjustment grooves are provided on the two sets of adjustable angle fixed foot plates, fastening bolts are provided on the two sets of adjustable angle fixed foot plates, the two sets of fastening bolts pass through the two sets of angle adjustment grooves respectively, the two sets of fastening bolts are screwed on the wheelchair clamp, and two sets of locking countersunk holes are provided on both sides of the bottom of the wheelchair clamp.
[0006] Preferably, the two groups of adjustable angle fixed foot plates can also be replaced by two groups of locking fixed foot plates, and the bottoms of the two groups of locking fixed foot plates are both provided with two groups of arc grooves, and the two groups of locking fixed foot plates are also provided with angle adjustment grooves.
[0007] Preferably, sliding sleeves are provided in both groups of mounting holes on the wheelchair clamping member.
[0008] Preferably, a finger pull hole is provided at the front end of the lever pull rod.
[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: when in use, the two sets of backrest movable kits are installed on the two vertical tubes on the back of the wheelchair by means of the cooperation of bolts and connecting holes, and the two sets of wheelchair clamps are installed on the two horizontal tubes of the cushion part by means of the cooperation of bolts and locking countersunk holes, so that the wheelchair clamps are clamped on the tubes, thereby completing the installation of the folding mechanism. When in use, the limit pin is initially in the arc groove, and the adjustable angle fixed foot plate is supported by the limit pin. The adjustable angle fixed foot plate is tightened by the tightening bolt so that the backrest movable kit is perpendicular to the wheelchair clamp, and the back of the wheelchair is in a vertical state. When the back angle needs to be adjusted, the limit pin is pulled by the lever pull rod to make the limit pin slide downward along the slide to make the limit pin disengage from the arc groove, and then the tightening bolt is loosened and the adjustable angle fixed foot plate is rotated to make the adjustable angle fixed foot plate drive the arc groove to move forward and backward, so as to adjust the arc groove. The limit pin is then pushed to the arc slot by the lever pull rod, so that the limit pin is re-engaged in the arc slot of the adjustable angle fixing foot plate, so that the limit pin supports the adjustable angle fixing foot plate again, thereby making the backrest movable kit drive the wheelchair back to rotate through the vertical tube, and realizing the wheelchair back angle adjustment. When not in use, the limit pin is disengaged from the arc slot, and the fastening bolt is loosened, the wheelchair back can be folded up through the cooperation of the backrest movable kit and the wheelchair clamp, thereby effectively reducing the space occupied by the wheelchair when stored, facilitating carrying and storage, and being able to adjust the angle of the backrest, so that the user can adjust the angle of the backrest according to individual comfort, and avoid discomfort caused by long-term use. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;
[0011] Figure 2 It is a schematic diagram of the axonometric explosion structure of the utility model;
[0012] Figure 3 It is a schematic diagram of the axonometric structure of the locking and fixing foot plate in the utility model;
[0013] Figure 4 It is a right view structural schematic diagram of the utility model;
[0014] Markings in the attached figure: 1. Backrest movable kit; 2. Wheelchair clamp; 3. Connecting hole; 4. Adjustable angle fixed foot plate; 5. Locking fixed foot plate; 6. Lever pull rod; 7. Limiting pin; 8. Connecting plate; 9. Slide; 10. Angle adjustment slot; 11. Slide sleeve; 12. Locking countersunk hole; 13. Fastening bolt. DETAILED DESCRIPTION
[0015] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0016] Example
[0017] See also Figure 1-Figure 4The utility model provides a wheelchair backrest folding device, comprising two groups of folding device mechanisms, the folding device mechanisms comprising a backrest movable kit 1 and a wheelchair clamping member 2, two groups of connecting holes 3 are arranged on both sides of the outer wall of the backrest movable kit 1, two groups of connecting plates 8 are fixedly installed at the bottom of the backrest movable kit 1 by bolts, each group of connecting plates 8 is provided with a slideway 9, mounting holes are arranged on both sides of the top of the wheelchair clamping member 2 and two groups of adjustable angle fixed foot plates 4, the wheelchair clamping member 2 is rotatably installed on the two groups of connecting plates 8 by the cooperation of connecting pins and the mounting holes, and the top of the wheelchair clamping member 2 is rotatably installed on the two groups of connecting plates 8 by the cooperation of connecting pins and the mounting holes An adjustable angle fixed foot plate 4 is rotatably installed, and arc grooves are provided at the bottom of the two groups of adjustable angle fixed foot plates 4. A limit pin 7 is slidably provided on the two groups of slideways 9, and a lever pull rod 6 is fixedly sleeved on the limit pin 7. Both ends of the limit pin 7 are clamped in the two groups of arc grooves. Angle adjustment grooves 10 are provided on the two groups of adjustable angle fixed foot plates 4. Fastening bolts 13 are provided on the two groups of adjustable angle fixed foot plates 4. The two groups of fastening bolts 13 pass through the two groups of angle adjustment grooves 10 respectively. The two groups of fastening bolts 13 are screwed on the wheelchair hoop 2, and two groups of locking countersunk holes 12 are provided on both sides of the bottom of the wheelchair hoop 2;When in use, the two sets of backrest movable kits 1 are installed on the two vertical tubes on the back of the wheelchair by means of the cooperation of bolts and connecting holes 3, and the two sets of wheelchair clamping parts 2 are installed on the two horizontal tubes of the cushion part by means of the cooperation of bolts and locking countersunk holes 12, so that the wheelchair clamping parts 2 are tightly clamped on the tubes, thereby completing the installation of the folding device mechanism. When in use, the limit pin 7 is initially in the arc slot, and the adjustable angle fixed foot plate 4 is supported by the limit pin 7, and the tightening bolt 13 is The angle-adjusting fixed foot plate 4 is pressed tightly to make the backrest movable kit 1 perpendicular to the wheelchair hoop 2, and the back of the wheelchair is in a vertical state. When the back angle needs to be adjusted, the limit pin 7 is pulled by the lever pull rod 6 to make the limit pin 7 slide downward along the slide 9 to make the limit pin 7 disengage from the arc groove, and then the fastening bolt 13 is loosened and the adjustable angle fixed foot plate 4 is rotated to make the adjustable angle fixed foot plate 4 drive the arc groove to move forward and backward, so as to adjust the position of the arc groove. , then tighten the fastening bolt 13 to fix the adjustable angle fixed foot plate 4, and then the lever pull rod 6 and the limit pin 7 cooperate to drag the connecting plate 8 to rotate, so that the connecting plate 8 drives the backrest movable kit 1 to rotate, and the limit pin 7 is rotated to the arc slot, and then the lever pull rod 6 pushes the limit pin 7 to make the limit pin 7 re-engage the arc slot of the adjustable angle fixed foot plate 4, so that the limit pin 7 re-supports the adjustable angle fixed foot plate 4, so that the backrest movable kit 1 drives the wheelchair back to rotate through the vertical tube to achieve the wheelchair back angle adjustment. When not in use, the limit pin 7 is separated from the arc slot, and the fastening bolt 13 is loosened, and the wheelchair back can be folded up through the cooperation of the backrest movable kit 1 and the wheelchair hoop 2, so that the space occupied by the wheelchair when stored can be effectively reduced, which is convenient for carrying and storage, and the backrest can be adjusted in angle, so that the user can adjust the backrest angle according to individual comfort and avoid discomfort caused by long-term use. ;
[0018] The two groups of adjustable angle fixed foot plates 4 can also be replaced by two groups of locking fixed foot plates 5, and two groups of arc grooves are provided at the bottom of the two groups of locking fixed foot plates 5, and angle adjustment grooves 10 are also provided on the two groups of locking fixed foot plates 5; by replacing the adjustable angle fixed foot plates 4, the limit pin 7 can be switched between the two arc grooves to adapt to the support requirements of the wheelchair backrest.
[0019] Slide sleeves 11 are provided in the two groups of mounting holes on the wheelchair clamp 2 ; by providing the slide sleeves 11 , the wheelchair clamp 2 can be rotated more smoothly on the backrest movable kit 1 .
[0020] The front end of the lever rod 6 is provided with a finger pull hole; by providing the finger pull hole on the lever rod 6, the lever rod 6 can be more convenient to move when pulling the limit latch 7, avoiding slippage.
[0021] The utility model provides a wheelchair back folding device, and its working principle is that when in use, two sets of backrest movable kits 1 are installed on the two vertical tubes on the back of the wheelchair by means of the cooperation of bolts and connecting holes 3, and two sets of wheelchair clamping parts 2 are installed on the two horizontal tubes of the cushion part by means of the cooperation of bolts and locking countersunk holes 12, so that the wheelchair clamping parts 2 are clamped on the tubes, thereby completing the installation of the folding device mechanism. When in use, the limit pin 7 is initially in the arc groove, and the adjustable angle fixed foot plate 4 is supported by the limit pin 7, and the adjustable angle fixed foot plate 4 is pressed by the fastening bolt 13, so that the backrest movable kit 1 is perpendicular to the wheelchair clamping parts 2, and the back of the wheelchair is in a vertical state. When the back angle needs to be adjusted, the limit pin 7 is pulled by the lever pull rod 6, so that the limit pin 7 slides downward along the slide 9, so that the limit pin 7 is disengaged from the arc groove, and then the fastening bolt 13 is loosened and rotated When the wheelchair is not in use, the limiting pin 7 is disengaged from the circular arc slot, and the fastening bolt 13 is loosened, so that the wheelchair back can be folded up by the cooperation of the backrest movable kit 1 and the wheelchair clamping member 2.
[0022] The installation, connection or setting methods of the wheelchair back folding device of the utility model are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented; technicians in the industry only need to install and operate it according to the accompanying instruction manual.
[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A wheelchair backrest folding device, characterized in that: The invention comprises two groups of folding mechanisms, the folding mechanisms comprising a backrest movable kit (1) and a wheelchair hoop (2), two groups of connecting holes (3) are arranged on both sides of the outer wall of the backrest movable kit (1), two groups of connecting plates (8) are fixedly installed at the bottom of the backrest movable kit (1) by bolts, each group of connecting plates (8) is provided with a slideway (9), mounting holes are arranged on both sides of the top of the wheelchair hoop (2) and on two groups of adjustable angle fixed foot plates (4), the wheelchair hoop (2) is rotatably installed on the two groups of connecting plates (8) by means of a connecting pin and the mounting hole, and the adjustable angle fixed foot plates are rotatably installed on both sides of the top of the wheelchair hoop (2) by means of a connecting pin and the mounting hole. (4), arc grooves are provided at the bottom of the two sets of adjustable angle fixed foot plates (4), limit pins (7) are slidably provided on the two sets of slideways (9), a lever pull rod (6) is fixedly sleeved on the limit pins (7), both ends of the limit pins (7) are clamped in the two sets of arc grooves, angle adjustment grooves (10) are provided on the two sets of adjustable angle fixed foot plates (4), fastening bolts (13) are provided on the two sets of adjustable angle fixed foot plates (4), the two sets of fastening bolts (13) pass through the two sets of angle adjustment grooves (10) respectively, the two sets of fastening bolts (13) are screwed on the wheelchair clamp (2), and two sets of locking countersunk holes (12) are provided on both sides of the bottom of the wheelchair clamp (2).
2. A wheelchair backrest folding device as claimed in claim 1, characterized in that: The two groups of adjustable angle fixed foot plates (4) can also be replaced by two groups of locking fixed foot plates (5), the bottoms of the two groups of locking fixed foot plates (5) are both provided with two groups of arc grooves, and the two groups of locking fixed foot plates (5) are also provided with angle adjustment grooves (10).
3. A wheelchair backrest folding device as claimed in claim 2, characterized in that: Sliding sleeves (11) are provided in the two groups of mounting holes on the wheelchair hoop component (2).
4. A wheelchair backrest folding device as claimed in claim 3, characterized in that: The front end of the lever pull rod (6) is provided with a finger pull hole.