JPS6242850Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for supporting a control wire for transmitting braking force of a vehicle handbrake.

2. Description of the Related Art A handbrake used as a parking brake for a vehicle is configured to perform braking by transmitting the braking force of an operating lever to a main body of the handbrake (generally called a brake brake) via a control wire.

In such a handbrake, the outer cable end of the control wire is supported on the outer wall of the transmission via a bracket, and the inner cable pulled out from the outer cable is connected to the shoe brake via a lever.

However, in the past, as shown in Figs. 1 and 2, the end of the outer cable 2 of the control wire 1 was fixed in an immovable state, so the inner cable 3, which expands and contracts from the outer cable 2 every time the brake is operated, is connected to the end. By swinging the lever, the outer cable 2 swings at a predetermined angle around the fixed end of the outer cable 2.

For this reason, the flexible tube that connects to the ends of the inner cable 3 and the outer cable 2 and covers a part of the inner cable 3 is subjected to bending force using the outer cable 2 support part as a fulcrum, and the difficulty is that durability is impaired due to fatigue caused by repeated bending. It was hot.

The present invention has been devised in view of such conventional difficulties, and is configured such that the end of the outer cable of the control wire is pivotally supported so as to freely swing together with the inner cable during brake operation. The present invention provides a support device for a handbrake control wire that prevents generation of bending force and improves durability.

The present invention will be described in detail below based on illustrated embodiments.

In FIG. 3 showing the first embodiment, the outer cable 2 of the handbrake control wire 1
The end portion is inserted into the tube 4a of the clamp fitting 4 and crimped. The clamp fitting 4 is formed in the shape of a cross, with pins 4b (two cylindrical parts) integrally provided on both sides of the outer peripheral wall of the tube 4a and extending in a direction perpendicular to the axis of the tube 4a.

On the other hand, a wire support bracket 7 is provided, which includes a metal fitting 5 whose flange portion 5a is fastened to the outer wall of the transmission, and a metal fitting 6 which is fastened to the proximal end of the metal fitting 5. A spring washer 12 is inserted into each of the holes 5a and 6a formed in the
Pass the bolt pin 11 through the
1 is screwed into both ends of the pin 4b and fastened, thereby supporting the control wire 1 so that it can freely swing around the axis of the pin 4b.

A flexible tube 8 that covers the pull-out portion of the inner cable 3 is attached to the end wall of the tube 4a of the clamp fitting 4.
is attached, and the end of the inner cable 3 is connected to a shoe brake operating lever 9. The flexible tube 8 and the pin 4b are provided so that their axial directions are substantially perpendicular to each other without being offset.

Here, the swinging surface of the lever 9 and the swinging surface of the clamp fitting 4 are designed to be substantially the same.

With such a configuration, when the operating lever 10 is operated, the inner cable 3 of the control wire 1
is pulled in the direction of the operating lever 10, the shoe brake operating lever 10 swings, and the clamp fitting 4 swings around the pin 4b.

At this time, since the portion of the control wire 1 supported by the clamp fitting 4 swings while maintaining a straight state due to the swinging of the clamp fitting 4, bending force is locally applied to the inner cable 3, flexible tube 8, etc. can be prevented and durability can be improved.

Furthermore, the clamp fitting 4 can be attached after the support bracket 7 has been fixed to the outer wall of the transmission in advance, improving production efficiency. Further, the support bracket 7 can also be formed by bending one member. Further, the tightening force of the clamp fitting 4 can be adjusted by the bolt pin 11 and the spring washer 12, so that the bracket 7 of the clamp fitting 4 can be adjusted.
The rocking resistance can be adjusted against variations in parts and changes over time.

As explained above, according to the present invention, since the outer cable end of the handbrake control wire is attached by being pivoted so that it can swing freely, the inner cable end that is pulled out from the outer cable when the brake is operated oscillates. As the control wire moves, the end of the outer cable also swings in the same plane, preventing local bending of the control wire.
The durability of the control wire can be greatly improved. In addition, since the clamp fitting is pivotally supported on the bracket via the bolt pin, it is possible to attach the clamp fitting to the bracket fixed to the vehicle body in advance, and the bolt pin and spring washer allow the clamp fitting to swing freely. Another advantage is that the dynamic resistance can be adjusted.

[Brief explanation of the drawing]

1 and 2 are perspective views showing different conventional control wire support mechanisms, FIG. 3A is an overall configuration diagram of a handbrake equipped with a control wire support device according to the present invention, and FIG. 3B is the same as above. FIG. 4 is an exploded perspective view of essential parts of the control wire support device. 1... Control wire, 2... Outer cable, 3... Inner cable, 4... Clamp fitting, 4b... Pin, 5, 6... Metal fitting, 5a, 6a
... hole, 7 ... support bracket, 11 ... bolt pin, 12 ... spring washer.

Claims (1)

[Scope of utility model claims] In a vehicle handbrake in which an operating lever pivotally supported on the vehicle body and a handbrake main body are connected via a control wire, the outer cable end of the control wire has a substantially cross shape in which two cylindrical parts are orthogonal to each other. At the same time, bolt pins passed through the two prongs of the bracket fixed to the vehicle body through spring washers are attached to both ends of the other cylindrical part of the clamp fitting. A support for a handbrake control wire for a vehicle, characterized in that the control wire is screwed into and fastened to a cylindrical part, and the control wire is supported to freely swing around the axis of a cylindrical part fastened with a bolt pin of a clamp fitting. Device.