Wheelchair anti-wheel-reversing structure and wheelchair
By installing an anti-reverse wheel structure on the wheelchair, and using torsion springs to rotate the wheel body to increase the ground contact area, the problem of rear tilt and overturning of the wheelchair is solved and safety is improved.
Patent Information
- Application Number
- CN202422319565.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-09-23
AI Technical Summary
Existing wheelchair cars lack anti-reflection devices, which poses safety risks and can easily lead to overturning.
An anti-reverse wheel structure of a wheelchair car is designed, including a fixed seat, a first rod member, a U-shaped joint, a torsion spring, a second rod member and a wheel body. Through the action of the torsion spring, the wheel body rotates when tilted backward, and increases the contact ground area to enhance support force.
Effectively prevent the wheelchair from tilting and overturning, improve the safety of use, and enhance the user's sense of security.
Smart Images
Figure CN223196252U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and in particular to a wheelchair anti-reverse structure and a wheelchair. Background Art
[0002] Wheelchairs are an important tool for rehabilitation. They are not only a means of transportation for people with physical disabilities and limited mobility, but more importantly, they enable them to exercise and participate in social activities with the help of wheelchairs. Ordinary wheelchairs generally consist of four parts: a wheelchair frame, wheels, brakes, and a seat.
[0003] There are many types of wheelchairs on the market. Most wheelchairs do not have anti-tilt devices, which poses a safety hazard. When the user accidentally shifts the center of gravity backward during use, the wheelchair may tilt backward or overturn, posing a danger to the user.
[0004] In order to solve the above problems, the present application discloses a wheelchair anti-reverse structure and a wheelchair. Utility Model Content
[0005] In order to overcome the deficiencies of the prior art, the present application discloses a wheelchair anti-reverse structure and a wheelchair.
[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present application is: a wheelchair anti-rollover structure, comprising a fixing seat, a first rod, a U-shaped joint, a torsion spring, a second rod and two wheel bodies; the first rod is detachably fixed to the fixing seat;
[0007] The U-shaped joint is welded and fixed to the bottom of the first rod, and a small hole is opened on one side wall of the U-shaped joint;
[0008] The second rod is hinged inside the U-shaped joint via a hinge shaft;
[0009] The torsion spring is sleeved on the hinge shaft on the side with the small hole, with one end inserted into the small hole and the other end arranged on the rear side of the second rod;
[0010] The two wheel bodies are rotatably connected to the bottom of the second rod.
[0011] It is further preferred that a socket is provided inside the fixing seat along its direction, the first rod is inserted into the socket, and mounting holes are correspondingly provided on the circumferential sides of the first rod and the fixing seat. When the first rod is inserted into the socket, a screw is passed through the mounting hole and a nut is screwed on the screw to fix the first rod to the fixing seat.
[0012] Further preferably, a weight-reducing groove is provided inside the second rod.
[0013] Further preferably, the first rod and the second rod are both arc-shaped structures.
[0014] Further preferably, two internal threaded holes are provided on the inner bottom surface of the fixing seat.
[0015] In addition to the above structure, the present application also includes a wheelchair, including two wheelchair anti-reverse structures as described in any one of the above items, and the interior of each fixing seat is fixed to the rear wheel support rod of the wheelchair by two screws passing through two internal threaded holes.
[0016] This application achieves the following beneficial effects:
[0017] When the wheelchair anti-reverse wheel structure of the present application is installed on the wheelchair, when the wheelchair tilts backward, the anti-reverse wheel will increase the distance from the rear wheel, so that the area in contact with the ground is increased and the supporting force is strengthened, thereby improving the anti-reverse effect, increasing the safety factor when the user uses it, and having strong practicality.
[0018] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained through the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure of the present application and, together with the description, serve to explain the principles of the disclosure.
[0020] Figure 1 A schematic diagram of the overall structure disclosed in this application;
[0021] Figure 2 A schematic diagram of the back structure disclosed in this application;
[0022] Figure 3 This is a schematic structural diagram of the wheelchair disclosed in this application;
[0023] In the figure: 10, fixing seat; 11, socket; 12, internal threaded hole; 20, first rod; 30, U-shaped joint; 31, small hole; 40, torsion spring; 50, second rod; 51, weight-reducing groove; 60, wheel body; 70, hinge shaft; 80, screw; 90, nut; 100, mounting through hole; 110, rear wheel support rod. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with 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.
[0025] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present application.
[0026] Example
[0027] In order to solve the problem that the wheelchair in the prior art does not have an anti-tilt device and has a safety hazard, Figure 1 and Figure 2 As shown, the present application discloses a wheelchair anti-rollover structure, comprising a fixing seat 10, a first rod 20, a U-shaped joint 30, a torsion spring 40, a second rod 50 and two wheel bodies 60; the first rod 20 is detachably fixed to the fixing seat 10;
[0028] The U-shaped joint 30 is welded and fixed to the bottom of the first rod 20, and a small hole 31 is opened on one side wall of the U-shaped joint 30; the second rod 50 is hinged inside the U-shaped joint 30 via a hinge shaft 70;
[0029] The torsion spring 40 is mounted on the hinge shaft 70 on the side where the small hole 31 is formed, with one end of the torsion spring inserted into the small hole 31 and the other end of the torsion spring disposed on the rear side of the second rod 50. Under the action of the torsion spring 40, the second rod 50 can rotate or reset.
[0030] The two wheels 60 are rotatably connected to the bottom of the second rod 50 .
[0031] When the wheelchair anti-reverse wheel structure is installed on the wheelchair, when the wheelchair tilts backward, the wheel body 60 will rotate backward by a certain angle. At this time, the area of the entire wheelchair contacting the ground is increased, and the supporting force is also strengthened, thereby playing an anti-reverse role.
[0032] In order to facilitate the disassembly and assembly of the first rod 20 and the fixing seat 10, the present application provides an insertion hole 11 inside the fixing seat 10 along its direction, and the first rod 20 is inserted into the insertion hole 11. The first rod 20 and the surrounding sides of the fixing seat 10 are correspondingly provided with mounting through holes 100. When the first rod 20 is inserted into the insertion hole 11, a screw 80 is passed through the mounting through hole 100 and a nut 90 is screwed on the screw 80 to fix the first rod 20 to the fixing seat 10.
[0033] Without affecting the normal use of the second rod 50 and reducing the weight of the second rod 50 , the present application opens a weight-reducing groove 51 inside the second rod 50 .
[0034] In one specific embodiment, in order to enable the wheel body 60 to be placed on the ground after installation, the first rod 20 and the second rod 50 of the present application are both arc-shaped structures.
[0035] In this embodiment, two internal threaded holes 12 are provided on the inner bottom surface of the fixing base 10 , so that the fixing base 10 and the wheelchair can be mounted together by screws 80 .
[0036] refer to Figure 3 As shown, in addition to the above structure, the present application also includes a wheelchair, including two wheelchair anti-reverse structures as any of the above items, and the interior of each fixing seat 10 is fixed to the rear wheel support rod 110 of the wheelchair by two screws 80 passing through two internal threaded holes 12.
[0037] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0038] The above embodiments are intended only to illustrate the technical concepts and features of this application. Their purpose is to enable those skilled in the art to understand the content of this application and implement it accordingly. They are not intended to limit the scope of protection of this application. Any equivalent changes or modifications made in accordance with the spirit of this application shall be included in the scope of protection of this application.
Claims
1. A wheelchair anti-reverse structure, characterized in that: It comprises a fixing seat (10), a first rod (20), a U-shaped joint (30), a torsion spring (40), a second rod (50) and two wheel bodies (60); The first rod (20) is detachably fixed to the fixing seat (10); The U-shaped joint (30) is welded and fixed to the bottom of the first rod (20), and a small hole (31) is opened on one side wall of the U-shaped joint (30); The second rod (50) is hinged inside the U-shaped joint (30) via a hinge shaft (70); The torsion spring (40) is sleeved on the hinge shaft (70) on the side where the small hole (31) is opened, and one end of the torsion spring is inserted into the small hole (31), and the other end is arranged on the rear side of the second rod (50); The two wheels (60) are rotatably connected to the bottom of the second rod (50).
2. The wheelchair anti-reverse structure according to claim 1, characterized in that: The fixing seat (10) is provided with an insertion hole (11) in its interior along its direction, and the first rod (20) is inserted into the insertion hole (11). The first rod (20) and the peripheral side of the fixing seat (10) are provided with mounting through holes (100) correspondingly. When the first rod (20) is inserted into the insertion hole (11), a screw (80) is passed through the mounting through hole (100) and a nut (90) is screwed onto the screw (80) to fix the first rod (20) to the fixing seat (10).
3. The wheelchair anti-reverse structure according to claim 1, characterized in that: A weight-reducing groove (51) is provided inside the second rod (50).
4. The wheelchair anti-reverse structure according to claim 3, characterized in that: The first rod (20) and the second rod (50) are both arc-shaped structures.
5. The wheelchair anti-reverse structure according to claim 1, characterized in that: Two internal threaded holes (12) are provided on the inner bottom surface of the fixing seat (10).
6. A wheelchair, characterized in that: The invention comprises two wheelchair anti-reverse structures according to any one of claims 1 to 5, wherein the interior of each fixing seat (10) is fixed to the rear wheel support rod (110) of the wheelchair by two screws (80) passing through two internal threaded holes (12).