JPH0534294Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is applicable to strollers, shopping carts,
Regarding a stop device for a hand-pushed four-wheeled vehicle (hereinafter simply referred to as a cart) such as a handcart that has a seating function and is particularly convenient for elderly people to go shopping, walking, etc., this stop device is particularly suitable for equipping so-called elderly people's vehicles. Regarding equipment.

BACKGROUND TECHNOLOGY Until now, the stop device for this type of cart has achieved its purpose by operating a lever installed near the wheel to extend the stop bar in the width direction of the cart and engaging it between the spokes of the wheel. had reached. Therefore, when performing the stop operation, the operator had to bend down to perform the operation. Some people found it troublesome to operate the control lever, so they operated it with their feet.
However, in many cases, it was not possible to achieve a reliable stopping operation using the tip of the foot. Later, a brake lever equipped directly on the push rod of the cart was disclosed, but the structure was complicated due to the operation of folding the car body, and there was a lot of transmission loss during the transmission of force from the hand to the wheel, making it expensive. It is heavier and has not yet become very popular.

Problems that the invention aims to solve Therefore, the present invention solves these problems such as complicated structure, high price, and large weight by using a simple mechanism without impairing the folding function of the cart. To provide a stopping device that can be operated reliably without changing.

Means for Solving the Problems The present invention provides a stop lever for stopping the wheels at the rear or side of the cart, separate from the push rod, extends the lever upwards, and operates the lever to stop and release the cart. operation was possible.

Operation A stop lever biased to the open position by a spring is operated against the spring force to engage the stop bar with the wheel. When canceling the stop, simply return the stop lever to the open position.

Embodiment Figures 1 to 3A show an example of a car for the elderly equipped with the equipment of the present invention.

In the figure, the lower end of the rear leg 10 on one side of the cart has two holes 1 spaced apart in the vertical direction.
2 and 14 are provided. These holes have the legs 10
Two holes 22 and 24 provided at an interval in the vertical direction are aligned with opposing plate surfaces 18 and 20 of a plate member 16 which has a generally U-shaped cross section and is sunk in from above. The axle 8 passes through the hole 14 of the rear leg 10 and the hole 24 of the plate member 16. A rear wheel 6 is attached to the outer end of the axle 8 by a known method. Holes 12, 22 also receive suitable means such as pins 58. The plate surface 20 of the plate member 16 is the plate surface 18
It extends further downward, and another hole 26 is provided in the lower part thereof. This hole 26 has a long stop lever 28.
The holes 30 provided in the lower ends of the two are aligned and pinned together 60.

The stop lever 28 preferably extends to a position near the middle of the height of the push rod 27, and if necessary has a knob 32 attached to its upper portion for easy operation. Further, below the lever 28 and above the hole 30, two holes 34 and 36 are provided with an interval in the vertical direction.

Further, in this embodiment, the plate surface 20 of the plate member 16
A guide plate 42 with an elongated groove 40 is provided between the stop lever 28 and the stop lever 28 and is biased by a spring 38 . A hole 44 provided at the end of the guide plate 42 allows the rear leg 10
The hole 12 of the plate member 16 is aligned with the hole 22 of the plate member 16 and pinned 58 at the same time. The guide plate 42 is connected to the long groove 4.
0 has another hole 46 at the top. This hole 46
One end of the spring 38 is supported by a pin 48. Further, a pin 50 fixed to the hole 34 of the stop lever 28 is inserted into the long groove 40 of the guide plate 42. The long groove 40 forms an arc centered on the hole 46, for example.

A stop rod 52 is inserted into the hole 36 of the stop lever 28 and fixed thereto. This stop bar 52 has the spring 3
8 is locked, the pin 50 is in the normal state, and the long groove 40 is locked.
(See Figure 2).

The rear wheel (not shown) on the other side of the cart is attached to the end of the axle 8 passing through from the one side via a plate member 56 fixed to the rear leg 54 with a pin 59 in the same way as on the one side. . The other side is different from the one side in that the other end of a long stop bar 52 fixed to the stop lever 28 on one side is supported by a short lever 57. The lower end of the lever 57 is pivotally connected to the hole 26 in the long plate surface 20 of the plate member 56 with a pin 55, as on one side.

Here, when the pin 50 is biased by the spring 38 toward the right end of the long groove 40 (FIG. 2), the stop bar 52 is pushed against the radial spoke 6 of the wheel 6.
It is located at a position radially inward of the central axle bearing portion 64 of the axle shaft 8 and radially outward from between a plurality of radial ribs 66 that are integrally raised in the axial direction of the axle shaft 8. No action is taken. When the stop lever 28 of FIG. 2 is rotated to the left around the pin 60 by an angle α against the force of the spring 38,
The end portion 52a of the stop bar 52 moves radially from the outside to the inside and enters between the ribs 66, as shown in broken lines in FIG. 2, to prevent the wheel 6 from rotating. In this case, when the stop lever 28 is operated, the stop bar 52 is simultaneously engaged between the ribs of the rear wheels on both the left and right sides. This operation can be performed without using the stop lever 28.
2 can be achieved by simply stepping forward with your foot.

While the stop bar 52 is engaged between the ribs 66, rotation of the wheel 6 is completely prevented. To release the stoppage, the stop lever 28 can be returned to its original position around the pin 60. Also, to release using only your feet,
As shown in FIG. 3A, a step-in portion 29 is preliminarily formed at the lower end of the stop lever 28, and this can be achieved by simply stepping forward on the step-in portion 29 (see broken line in FIG. 2). The spring 38 holds the stop lever 28 in a fixed position and at the same time ensures actuation of the lever 28. That is, when the lever 28 is rotated, the pin 50 rotates the guide plate 42 through the long groove 40 around the pin 58 against the elastic force of the spring 38, so that the rotation of the lever 28 is caused by the rotation of the spring 38.
8 is completely retracted and the pin 50 moves reliably until it comes into contact with the end of the long groove 40.

In the above embodiment, depending on the size of the cart, the folding method, and other needs, the stop lever may be configured to operate in the front and back directions, and the stop bar may act on the lower part of the axle. Those skilled in the art are free to do the following. Furthermore, the same effect can be achieved by providing a stop lever in front of the axle.

Effects of the invention This invention allows the chair part 7 to be used even when standing.
Even in the seated position, the stop lever 28 is used to move the stop bar 52 radially from the outside to the inside of the wheel and from the inside to the outside, so that the stop bar 52 is attached to the inner end of the adjacent spoke. By locking and releasing between the provided ribs 66, the cart can be reliably stopped and released, and this operation can be performed elastically by the action of a spring force. Since the stop bar 52 does not need to extend in the width direction of the cart, the structure is simpler, lighter, and less likely to break down than conventional devices, making it safe and not interfering with the cart's folding function at all. The use of a stop lever 28 that can be operated at a high position facilitates stopping and releasing operations. Then,
It can be used safely and appropriately, especially in carts used by elderly people.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an example of a cart equipped with the stop device of the present invention, Fig. 2 is an overall assembly diagram, Fig. 3 is an exploded view of the stop device, and Fig. 3A is a diagram showing another example of the stop lever. It is. Explanation of symbols, 6... Rear wheel, 8, 9... Axle, 1
0... Rear leg, 16... Plate member, 28... Stop lever, 42... Guide plate, 52... Stop bar, 54...
Rear leg, 56... Plate member, 62... Spoke, 66
……rib.

Claims (1)

[Claims for Utility Model Registration] A stopping device for a cart for stopping the movement of a cart, comprising a lower part at the lower end of a leg 10 supporting a wheel 6 having a plurality of spokes 62 extending radially outward from the center. A stop lever 2 whose upper part is pivotably supported and which extends upwardly can be moved back and forth.
8, a spring 38 that elastically holds the stop lever 28 in one of the two front and back positions, and a stop rod 52 attached to the stop lever 28, which is configured to rotate the spoke 62 by operating the stop lever 28. The wheels 6
A stop bar 52 that can be taken in and out in the radial direction of the cart, and the cart operator can stop the movement of the cart by operating the upper part of the stop lever 28.