JP2007269159A - Braking device of wheelbarrow - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a braking device of a wheelbarrow devised to carry out speedy and certain braking operation by drawing up a brake wire at a large stroke only by slightly drawing up a brake rod by light force even by a person weak in grasping power such as an elderly person and a woman. <P>SOLUTION: An end part of the brake rod positioned on a lower part of a handle is stored free to pivotally move in a grip end housing mounted on both end parts of the handle extending in a U letter shape to the front from an upper part side part of the wheelbarrow, a brake operation wire one end of which is fastened in the grip end housing is wound around the end part of the brake rod and the brake rod is hooked on a handle bar by a hooking member. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention generally relates to a wheelbarrow that is convenient for an elderly person who feels uneasy about his / her legs to use in a walk or shopping. However, it is not limited to these silver cars, but includes other wheelbarrows such as strollers and shopping cars. More specifically, the present invention relates to a braking device for the handcart.

JP 2005-119364 A

In the conventional wheelbarrow braking mechanism, the brake wire connected to this is pulled by rotating the brake rod attached to the handle part of the wheelbarrow so that the brake is connected to the tip of the brake wire. A brake shoe provided on the brake operating rod by operating the kite contacts the wheel of the wheelbarrow to brake the wheel.
When the brake rod is released from the hand, the brake wire attracted by the spring or other urging force attached to the brake operating rod returns to the original state, and at the same time, the brake rod returns to the original position, and the braking of the wheel is released. It is configured as follows.
However, women and elderly people who use a wheelbarrow generally have a weak grip and may not be able to perform a quick brake operation.
Since the brake wire of the conventional wheelbarrow is connected to the brake rod at one end, the brake lever is not strong unless the brake lever is pulled up quickly. In the reference invention, as a device for giving a sufficient stroke to the brake wire without holding the brake lever over an unreasonably large range, a gear support portion is provided at an intermediate position of the handle of the wheelbarrow, and the first is engaged with each other in the gear support portion. A gear and a second gear are incorporated, a rear brake lever is attached to the first gear so as to be interlocked, and a brake wire is pulled rearward by a wire operation lever having a lower end fixed to the second gear.
However, in this reference as well, it is the same that one end of the wire is pulled by the wire operation lever, and the gear ratio of the two gears can be changed to pull the brake wire longer with light force. The structure of the brake handle portion is complicated, the number of members is increased, the brake operation is not easy, and the cost is increased.
In view of this, the present invention has been made to improve the braking effect even with a weak grip such as an elderly person or a woman, and this can be achieved with a simple structure.

In a wheelbarrow braking device consisting of a handle 杆, a brake 杆, and a brake wire, the brake wire with its end fixed inside the grip end housing is located near the end of the brake た that is pivotally mounted in the housing. It winds up.
Also, the brake is locked by hooking a brake rod on the hook member attached to the handle.

  Rather than connecting the brake wire to the end of the brake rod and pulling it, it is wound around the end, so you can easily apply the brakes by simply pulling up the brake lever. Also, the brake can be released by slightly releasing the force to grip the brake rod. Therefore, the brake operation can be performed easily and reliably even by a person having a weak grip such as an elderly person or a woman who is a user of the wheelbarrow, and is safe. Moreover, since the brake wire is wound around the brake rod which is a circular pipe, the brake wire is easy to slip, the brake operation is smooth, and the sudden braking impulse can be reduced. In addition, since these effects are achieved with a simple structure without increasing the number of members, the cost is not increased.

Next, the best embodiment of the present invention will be described in detail with reference to the drawings.
The handcart to which the braking device is mounted includes an operation unit that is operated by a user, an operation unit that operates directly on the wheel of the handcart, and an operation wire that connects the operation unit and the operation unit.
FIG. 1 is a perspective view of the operation unit 1 of the handcart according to the present invention. The operation unit 1 is a U-shaped handle bar 3 and a pair of grip end housings (hereinafter abbreviated as “housings”) 5 fixed to the ends of the U-shaped brake bar 4 and the front wheel bar 7 positioned below the handle bar 3. It consists of five. A hook member 6 is attached to the center portion of the handle rod 3, and the brake rod 4 is hooked to lock the brake. The end of the brake wire 2 is also accommodated in the housing 5.
Urethane resin is wound around the handle bar 3 that protrudes in a U-shape toward the traveling direction, improving the user-friendliness and making it difficult for the hand to slip. The user inserts his body into the handle bar 3 and holds it to push the handcart. Similarly, urethane resin is adhered to the upper surface and the inner side of the housing.
When using this wheelbarrow as a walking aid, the user puts his elbow on the handle 杆 3 or the housing 5 and pushes the upper body in the handle 杆 3. Since it is not known where the left and right hands are located on the handle 杆 3, and the brake operation may be performed only with one hand, the brake 杆 4 has the same shape as the handle 杆 3, and the brake wire 2-2 is also It is provided on the left and right. As a result, the hand reaches the brake rod 4 regardless of the position of the handle rod 3, and the brake operation can be performed with only one hand.
Both ends 3 a-3 a of the handle bar 3 are fixed in the housing 5. On the other hand, the brake rod 4 located below the handle rod 3 projects in a U-shape forward like the handle rod 3, and both end portions 4a-4a are pivotally supported by the shaft portion 8 in the housing 5 so as to be rotatable. ing. The pair of brake wires 2-2 are hung on both ends 4b-4b of the brake rod 4 housed in the housing 5-5, and one end 2a of the wire is fixed in the housing 5, and the brake After being hung on the rod 4, the other end extends downward from a hole 5a formed in the lower portion of the housing and is connected to a brake operating rod provided at the tip.
When the brake rod 4 is pulled up in the direction of the handle rod 3, that is, upward, as shown in FIG. 2, the brake wire 2 is pulled up, and a brake operating rod (not shown) provided at the tip is interlocked. The brake shoe provided touches the wheel and the brake is applied.
The brake wire is not connected to the brake rod at the end, but is wound around the end of the brake rod with a circular cross section. Since the brake wire is pulled up and moves smoothly, there is no sudden braking and the wheelbarrow is not turned forward.
When the brake rod 4 is released, the brake rod 4 returns to its original position by the biasing force of the elastic body attached to the brake operating rod, and the brake is released.
On the other hand, the brake lock mechanism according to claim 2, that is, the lock operation for completely stopping the movement of the wheelbarrow is performed by operating the hook member 6 attached to the center portion of the handle 3 as shown in FIG. Do. That is, when the hook member 6 is rotated in the direction of the arrow while pulling up the brake rod 4 upward, the brake rod 4 is lowered downward by the elastic force of a spring or the like, and the stopper piece provided on the brake operating rod is the locking portion of the wheel. And the vehicle is stopped. To release the lock, simply lift up the brake rod 4.

The present invention can be used as a wheelbarrow braking device used by elderly people who feel anxious about legs and legs during a walk or shopping. However, the present invention is not limited to silver cars, and can be widely applied to other handcarts such as baby carriages and shopping carts.

The perspective view of the operation part of the braking device of this invention. Explanatory drawing which shows the structure of a housing vicinity. Explanatory drawing which shows the state which pulled up the brake rod. FIG. 3 is an explanatory view showing a state where a brake lock according to claim 2 is applied.

Explanation of symbols

1, brake device operation section 2, brake wire 3, handle 杆 4, brake 杆 5, grip end housing 6, hook member

Claims (2)

Grip end housings fixed to both ends of the handle bar extending in a U-shape forward from the upper side of the wheelbarrow accommodate the end of the brake rod extending in a U-shape forwardly located at the lower part of the handle bar. And
A braking device for a handcart, wherein a brake operation wire having an end portion fixed in a grip end housing is wound around an end portion of a brake rod. 2. The handcart according to claim 1, wherein the brake の is lifted by the hook member and the brake 引 き 上 げ is applied to the handle to raise the brake, and the brake member is released from the brake 杆 to apply the brake lock. Braking device.

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