JPH0441854Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a brake device for a rehabilitation assistance vehicle.

[Conventional technology]

BACKGROUND ART Rehabilitation assistance vehicles have been known that are equipped with a handbrake that is operated by a caregiver and a tackle brake that is used when stopping the vehicle.

[Problem to be solved by the invention] In conventional assistance vehicles, the brake pieces of the hand brake and tackle brake, which are brought into pressure contact with the wheels with tires, are placed at different positions with respect to the wheel support frame. Because of the installation method, the installation work is complicated and time consuming, resulting in poor workability, and there are also problems in that the number of components such as mounting members increases, resulting in high production costs.

In addition, especially in the case of tackle brakes, it is desirable that reliable braking action be maintained with a simple structure.

Therefore, an object of the present invention is to provide a brake device for a rehabilitation assistance vehicle in which the brake pieces of the handbrake and tackle brake can be easily attached, and the braking action of the tackle brake can be firmly maintained. It is something.

[Means to solve the problem]

In order to achieve the above object, the brake device for a rehabilitation assistance vehicle of the present invention has a lever for a tackle brake rotatably attached to a frame member fixed to a wheel support frame of the assistance vehicle, and the lever and a first brake piece and a second brake piece are rotatably connected to the frame member on the same axis, and the lever and the tip end of the first brake piece are pivoted by a link. The length of the first brake piece is selected so as to be in pressure contact with the tire-equipped wheel when the pivot portion of the lever and the link are in substantially a straight line, and the second brake piece is It is connected by a wire to a handbrake lever attached to the backrest frame of an assistance vehicle, and is constructed so that when the wire is pulled, it rotates against the bias of a spring and comes into pressure contact with a tire-equipped wheel. It is.

[Effect]

In the brake device configured as described above, both the hand brake and the tackle brake can be attached at the same time by fixing the frame member to the wheel support frame of the assistance vehicle. When the tackle brake lever is rotated, the first brake piece rotates via the link, and when the link is approximately in line with the pivot part of the lever, the first brake piece is attached to the tire. It presses against the wheels and provides a strong braking effect.

Furthermore, when the lever of the handbrake is squeezed, the wire is pulled, and the second brake piece rotates against the bias of the spring, and comes into pressure contact with the tire-equipped wheel to perform a braking action.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of the assistance vehicle. The assistance vehicle 1 includes a frame-shaped backrest frame 2 and a seat frame 3 bent in the shape of a frame, armrest holders 4, 4 whose rear ends are pivoted at predetermined height positions on both sides of the backrest frame 2, and the armrest holders 4. , 4, the upper ends of which are pivotally connected to the front and rear positions on both sides of the wheel support frames 5, 5 and auxiliary wheel support frames 6, 6, which are foldable. Wheels with tires 7, 7 are mounted on the lower ends of the wheel support frames 5, 5, and casters 8, 8 are mounted on the lower ends of the auxiliary wheel support frames 6, 6, respectively. 9
is the backrest, 10 is the seat plate, 11 is the footrest, 12 and 1
Reference numeral 3 is a connecting rod, and assistance vehicles having such a configuration are generally known.

FIG. 2 is a perspective view of the brake device according to the present invention seen from the back side. This brake device 14 has a frame member 15. The frame member 15 is formed by drilling a plurality of mounting holes 16 in a metal strip plate of a required length,
On the outer surface of its lower part is a supporting piece 1 shaped as seen from the side.
7 are integrally formed. Then, it is fixed to both outer ends of the wheel support frames 5, 5 with bolts or the like.

A tackle brake lever 18 bent in a substantially dogleg shape is rotatably attached to the upper part of the support piece 17 by a pivot shaft 19. Further, a support shaft 20 is fixedly provided at a position below the lever 18 and between the support piece 17 and the frame member 15, and a first brake piece 2 for the tackle brake is attached to the support shaft 20.
1 and a second brake piece 22 for a handbrake are rotatably mounted coaxially. The tip of the lever 18 and the tip of the first brake piece 21 are pivotally connected by a link 23.

Therefore, when the lever 18 is rotated as shown by the chain line in FIG.
a comes into contact with the tire-equipped wheel 7 to perform a braking action. Note that the first brake piece 21 is connected to the lever 1.
The length is selected so that when the pivot portion 8 and the link 23 form a substantially straight line as shown by the chain line in FIG. 3, the bent portion 21a is strongly pressed against the tire-equipped wheel 7. As a result, the braking action is effectively exerted, and a locking action is exerted on the lever 18, thereby making it possible to continue to maintain the braking state reliably.

On the other hand, one end of a wire 24 is connected to the rear end of the second brake piece 22, and the other end of the wire 24 is connected to a handbrake lever rotatably attached to the grip portion 2a of the backrest frame 2. 25
is connected to. In addition, the second brake piece 22
is normally rotated upwardly by a coil spring 26 so that its tip does not come into sliding contact with the tire-equipped wheel 7. Therefore, when the wire 24 is pulled by gripping the lever 25, the second brake piece 22 rotates about the support shaft 20 as shown by the chain line in FIG.
Its tip comes into pressure contact with the tire-equipped wheel 7 to perform a braking action.

[Effect of idea]

Since the present invention is configured as described above, it produces the effects described below.

By adopting a configuration in which the brake pieces for the tackle brake and the brake pieces for the hand brake are coaxially rotatably connected to the frame member,
Both brake pieces can be installed simultaneously by simply fixing the frame member to the wheel support frame.
Work efficiency can be significantly increased, and manufacturing costs can be significantly reduced because the number of component parts is reduced.

In addition, the brake piece for the tackle brake is designed so that when the lever's pivot point and the link are in a substantially straight line, they come into pressure contact with the tire-equipped wheel to apply the brakes. , a locking action is exerted on the lever and the braking state can be maintained reliably.

[Brief explanation of the drawing]

The drawings relate to an embodiment of the present invention; FIG. 1 is an overall perspective view of an assistance vehicle, FIG. 2 is a perspective view of a brake device, and FIGS. 3 and 4 are explanatory views of the operation of the brake device. 1... Assistance vehicle, 2... Backrest frame, 5,5
...Wheel support frame, 7...Wheel with tire, 1
5... Frame member, 18... Lever for tackle brake, 20... Support shaft, 21... First brake piece, 22... Second brake piece, 23... Link, 24... Wire, 25...Lever for handbrake, 26...Coil spring.

Claims (1)

[Scope of utility model registration request] A tackle brake lever is rotatably pivoted to a frame member fixed to the wheel support frame of the assistance vehicle, and a first brake piece and a second brake piece are located below the lever and are attached to the frame member. The lever and the first brake piece are rotatably connected coaxially, and the tip of the lever and the first brake piece are pivotally connected by a link, and the first brake piece is connected to the pivot part of the lever and the link. The length of the second brake piece is selected so that it comes into pressure contact with the tire-equipped wheel when the brake piece is in a substantially straight line, and the second brake piece is connected by a wire to a handbrake lever attached to the backrest frame of the assistance vehicle. A brake device for a rehabilitation assistance vehicle, characterized in that the brake device is configured to rotate against the biasing force of a spring by pulling the wire and come into pressure contact with a tire-equipped wheel.