Secondary folding four-wheeler with anti-falling mechanism

Abstract

The utility model provides a secondary folding four-wheeler with an anti-falling mechanism. The secondary folding four-wheeler comprises a foldable frame, two underframes and the anti-falling mechanism, the bottom frame is arranged on the two sides of the foldable frame and rotationally connected with the foldable frame; the anti-disengaging mechanism comprises an anti-disengaging pin and an elastic anti-disengaging pull buckle, the anti-disengaging pin is arranged on the bottom frame, the anti-disengaging pull buckle is arranged on the foldable frame, and a limiting hole is formed in the anti-disengaging pull buckle. When the secondary folding four-wheeler with the anti-falling mechanism is in a folding state, the anti-falling pin extends into the limiting hole and is matched with the limiting hole in a limiting mode. Compared with the prior art, the secondary folding four-wheeler with the anti-falling mechanism is stably locked through the anti-falling mechanism and is not easy to separate when being folded, so that the folding stability is improved, and the secondary folding four-wheeler is stable in structure and not easy to loosen when being stored and transported.

Description

Technical Field

[0001] The utility model relates to the technical field of medical rehabilitation equipment, in particular to a secondary folding four-wheel vehicle with an anti-slip mechanism. Background Art

[0002] A four-wheeled vehicle is a medical rehabilitation device for assisting the elderly, the infirm or the mobility-impaired (hereinafter referred to as the special population) to walk. The frames of the four-wheeled vehicles currently on the market can usually be folded left and right to meet the demand for reducing the packaging volume.

[0003] At present, the frame of the four-wheel vehicle has no fixed locking structure after being folded, which is easy to loosen, resulting in an unstable overall structure, and is prone to accidental damage during storage and transportation. Utility Model Content

[0004] The utility model aims to overcome the shortcomings and deficiencies in the prior art and provide a secondary folding four-wheeled vehicle with an anti-slip mechanism.

[0005] An embodiment of the utility model provides a secondary folding four-wheel vehicle with an anti-slip mechanism, comprising: a foldable frame, two bottom frames and an anti-slip mechanism;

[0006] The bottom frame is arranged on both sides of the foldable frame and is rotatably connected to the foldable frame;

[0007] The anti-drop mechanism comprises an anti-drop pin and an elastic anti-drop buckle, wherein the anti-drop pin is arranged on the base frame, the anti-drop buckle is arranged on the foldable frame, and a limiting hole is arranged on the anti-drop buckle;

[0008] When the secondary folding four-wheel vehicle with the anti-slip mechanism is in a folded state, the left and right sides of the foldable frame are folded with each other, the foldable frame is rotated toward the base frame until the foldable frame and the base frame are folded with each other, and the anti-slip pin extends into the limiting hole and cooperates with the limiting hole.

[0009] In some optional embodiments, the anti-slip buckle includes a base plate and a toggle plate that are connected to each other, the base plate is connected to the foldable frame, the toggle plate is provided with the limiting hole, and when the secondary folding four-wheeled vehicle with the anti-slip mechanism is in a folded state, the toggle plate abuts against the base frame.

[0010] In some optional embodiments, a bending portion is provided at one end of the prying piece away from the base sheet, and the bending portion is bent in a direction away from the base frame.

[0011] In some optional embodiments, the base plate and the driving plate are connected via an elastic connecting strip.

[0012] In some optional embodiments, the base plate is detachably connected to the foldable frame via a plurality of threaded fasteners.

[0013] In some optional embodiments, the end edge of the anti-dropout pin is formed with a guide chamfer.

[0014] In some optional embodiments, the foldable frame is rotatably matched with the base frame via a rotating seat.

[0015] In some optional embodiments, a limiting groove is provided on the rotating seat, and when the secondary folding four-wheeled vehicle with an anti-slip mechanism is in a folded state, the base frame extends into the limiting groove and cooperates with the limiting groove.

[0016] In some optional embodiments, the foldable frame includes a left frame and a right frame, the left frame and the right frame are connected via a folding bracket, and the left frame and the right frame are rotatably connected to the two chassis respectively.

[0017] Compared with the prior art, the secondary folding four-wheeled vehicle with an anti-slip mechanism of the utility model is stably locked by the anti-slip mechanism when folding and is not easy to separate, thereby improving the stability during folding and making the structure stable and not easy to loosen during storage and transportation.

[0018] In order to more clearly understand the present invention, the specific implementation of the present invention will be described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a secondary folding four-wheel vehicle with an anti-slip mechanism according to an embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of one side of a secondary folding four-wheel vehicle with an anti-slip mechanism according to an embodiment of the utility model;

[0021] Figure 3 for Figure 2 The cross-sectional view corresponding to the section line A shown;

[0022] Figure 4 This is a schematic structural diagram of an anti-drop buckle according to an embodiment of the utility model;

[0023] Figure 5 for Figure 3 An enlarged view of A is shown.

[0024] Description of reference numerals:

[0025] 10. Foldable frame; 11. Left frame; 12. Right frame; 13. Folding bracket; 14. Rotating seat; 15. Limiting groove; 20. Base frame; 30. Anti-slip mechanism; 31. Anti-slip pin; 32. Anti-slip buckle; 33. Limiting hole; 34. Base plate; 35. Toggle plate; 36. Prying part; 37. Elastic connecting strip; 38. Threaded fastener. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Figure 1 An embodiment of the utility model provides a secondary folding four-wheel vehicle with an anti-slip mechanism, comprising: a foldable frame 10, two bottom frames 20 and an anti-slip mechanism 30.

[0027] The foldable frame 10 is provided with structures such as handrails and brake handles. The base frame 20 is provided on both sides of the foldable frame 10 and is rotatably connected to the foldable frame 10. The base frame 20 is provided with multiple walking wheels and a brake structure, and the brake structure is connected to the brake handle; the anti-slip mechanism 30 includes an anti-slip pin 31 and an elastic anti-slip buckle 32. The anti-slip pin 31 is provided on the base frame 20, and the anti-slip buckle 32 is provided on the foldable frame 10. A limiting hole 33 is provided on the anti-slip buckle 32.

[0028] See also Figure 2 and Figure 3 When the secondary folding four-wheel vehicle with an anti-slip mechanism is in a folded state, the left and right sides of the foldable frame 10 are folded with each other, and the foldable frame 10 is rotated toward the base frame 20 until the foldable frame 10 and the base frame 20 are folded with each other, and the anti-slip pin 31 extends into the limiting hole 33 and cooperates with the limiting hole 33 to stably lock the foldable frame 10 and the base frame 20, so that the locked foldable frame 10 and the base frame 20 are not easy to separate, thereby improving the stability during folding, and making the structure stable and not easy to loosen during storage and transportation.

[0029] The structure of the foldable frame 10 can be designed according to actual conditions. In some optional embodiments, the foldable frame 10 includes a left frame 11 and a right frame 12, and the left frame 11 and the right frame 12 are connected by a folding bracket 13. The left frame 11 and the right frame 12 are rotatably connected to the two bottom frames 20 through connecting seats. In this embodiment, the folding bracket 13 includes a plurality of rotating rods, and the two ends of the rotating rods are rotatably connected to the left frame 11 and the right frame 12 respectively. The plurality of rotating rods are rotatably matched with each other. By relatively rotating the plurality of rotating rods, the left frame 11 and the right frame 12 can be relatively close to or away from each other, thereby realizing the folding of the foldable frame 10.

[0030] See also Figure 4The structure of the anti-dropping buckle 32 can be designed according to actual needs. For example, in some optional embodiments, the anti-dropping buckle 32 includes a base plate 34 and a toggle plate 35 that are connected to each other. The base plate 34 is connected to the foldable frame 10. A limiting hole 33 is provided on the toggle plate 35. When the secondary folding four-wheeled vehicle with an anti-dropping mechanism is in a folded state, the toggle plate 35 abuts against the base frame 20, so that it is not easy to shake. One of the base plate 34 and the toggle plate 35 is elastic, so that the toggle plate 35 is pressed against the base frame 20 under the action of the elastic force, so that the anti-dropping pin 31 is not easy to fall out of the limiting hole 33.

[0031] In some optional embodiments, a bend portion 36 is provided at one end of the toggle piece 35 away from the base piece 34, and the bend portion 36 is bent in a direction away from the base frame 20. The bend portion 36 facilitates the user's hand to bend the toggle piece 35 in a direction away from the base frame 20, thereby allowing the anti-drop pin 31 to drop out of the limiting hole 33.

[0032] In some optional embodiments, the base sheet 34 and the toggle sheet 35 are connected by an elastic connecting strip 37, so that the toggle sheet 35 can be pressed against the base frame 20 under the action of elastic force, so that the anti-drop pin 31 is not easy to fall out of the limiting hole 33. At this time, the base sheet 34 and the toggle sheet 35 may not be elastic.

[0033] See also Figure 5 In some optional embodiments, the base is detachably connected to the foldable frame 10 through a plurality of threaded fasteners 38, so that the base is stably fixed to the base frame 20 and the base is not easily rotated relative to the base frame 20 through multi-point fixing.

[0034] In some optional embodiments, a guide chamfer is formed on the end edge of the anti-slip pin 31, which is helpful to reduce the size of the end of the anti-slip pin 31. When the toggle plate 35 is pressed toward the base frame 20, it is helpful to guide the end of the anti-slip pin 31 into the limiting hole 33.

[0035] In some optional embodiments, the foldable frame 10 is rotatably matched with the base frame 20 via a rotating seat 14, thereby improving structural stability. In this embodiment, a rotating seat 14 is provided at the bottom position of the left and right sides of the foldable frame 10, and the rotating seat 14 is rotatably connected to the base frame 20 via a rotating shaft.

[0036] In some optional embodiments, a limiting groove 15 is provided on the rotating seat 14. When the secondary folding four-wheeled vehicle with an anti-slip mechanism is in a folded state, the base frame 20 extends into the limiting groove 15 and cooperates with the limiting groove 15 to limit the position. This makes the structure between the base frame 20 and the foldable frame 10 more stable and less prone to shaking in the folded state, thereby improving the locking stability and achieving a better anti-slip effect.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A secondary folding four-wheel vehicle with an anti-slip mechanism, characterized in that: include: Foldable frame, two bottom frames and anti-drop mechanism; The bottom frame is arranged on both sides of the foldable frame and is rotatably connected to the foldable frame; The anti-drop mechanism comprises an anti-drop pin and an elastic anti-drop buckle, wherein the anti-drop pin is arranged on the base frame, the anti-drop buckle is arranged on the foldable frame, and a limiting hole is arranged on the anti-drop buckle; When the secondary folding four-wheel vehicle with the anti-slip mechanism is in a folded state, the left and right sides of the foldable frame are folded with each other, the foldable frame is rotated toward the base frame until the foldable frame and the base frame are folded with each other, and the anti-slip pin extends into the limiting hole and cooperates with the limiting hole.

2. A secondary folding four-wheel vehicle with an anti-slip mechanism according to claim 1, characterized in that: The anti-slip buckle includes a base plate and a toggle plate that are connected to each other. The base plate is connected to the foldable frame. The toggle plate is provided with the limiting hole. When the secondary folding four-wheeled vehicle with the anti-slip mechanism is in a folded state, the toggle plate abuts against the base frame.

3. A secondary folding four-wheel vehicle with an anti-slip mechanism according to claim 2, characterized in that: An end of the prying piece away from the base piece is provided with a bending portion, and the bending portion is bent in a direction away from the base frame.

4. The secondary folding four-wheel vehicle with an anti-slip mechanism according to claim 2, characterized in that: The base plate and the paddle plate are connected via an elastic connecting strip.

5. The secondary folding four-wheel vehicle with an anti-slip mechanism according to claim 2, characterized in that: The base plate is detachably connected to the foldable frame via a plurality of threaded fasteners.

6. A secondary foldable four-wheeled vehicle with an anti-slip mechanism according to any one of claims 1 to 5, characterized in that: The end edge of the anti-dropping pin is formed with a guide chamfer.

7. A secondary foldable four-wheeled vehicle with an anti-slip mechanism according to any one of claims 1 to 5, characterized in that: The foldable frame is rotatably matched with the base frame via a rotating seat.

8. The secondary foldable four-wheeled vehicle with an anti-slip mechanism according to claim 7, characterized in that: The rotating seat is provided with a limiting groove, and when the secondary folding four-wheeled vehicle with an anti-slip mechanism is in a folded state, the base frame extends into the limiting groove and cooperates with the limiting groove in a limiting manner.

9. A secondary foldable four-wheeled vehicle with an anti-slip mechanism according to any one of claims 1 to 5, characterized in that: The foldable frame comprises a left frame and a right frame, wherein the left frame and the right frame are connected via a folding bracket, and the left frame and the right frame are rotatably connected to the two base frames respectively.

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