JPH10338109A - Parking brake for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent fatigue of an inner of a brake cable even when actuation and non-actuation of a parking brake is repeated by installing the brake cable on a car body and supporting it on a bracket free to revolve. SOLUTION: A parking brake is furnished with a control device 2 containing an operation lever part 1, a brake cable 3 consisting of first and second brake cables 6, 7 to connect a vehicle brake and the control device 2 to each other and a control mechanism 4 to fix both of the cables 6, 7 free to control. The operation lever part 1 is supported on a base part 1b fixed on a car body 5 by a support shaft 1a free to oscillate, and a bracket 10 to support one end 8a of an outer 8 of the second brake cable 7 is fixed on the car body 5 in the neighbourhood of this control device 2. This bracket 10 has two cable receiver parts 10a furnished with cutouts 11, and a projection 12 projectively provided on the outer one end 8a is engaged with a circular part of each of the cutouts 11 free to revolve.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a vehicle parking brake using a brake cable.

[0002]

2. Description of the Related Art For a parking brake for a vehicle,
For example, FIG. 6 to FIG.
No. 61 has disclosed. FIG. 6 discloses a parking brake fixed to the floor of a vehicle (a solid line indicates a non-operating state of the parking brake, and a two-dot chain line indicates a full operating state). The parking brake includes a control device 21 including an operation lever section 20 and the like, a brake cable 22 for connecting a vehicle brake (not shown) (generally, a rear brake) and the control device 21, and an adjustment mechanism 23. . The control device 21 includes an operation lever portion 20 which is an operation portion of the driver, and a base portion 26 connected to the operation lever portion 20 via a support shaft 24 and fixed to the vehicle body 25.
One end 27a of a first brake cable 27 is fixed to an end of the operation lever portion 20. The brake cable 22 is divided into two parts before and after the adjusting mechanism 23. The first brake cable 27 connects the operation lever section 20 to the adjusting mechanism 23, and the second brake cable 28 is provided in two pieces, and the adjusting mechanism 23
And the left and right brakes of the vehicle (not shown). Outer 29 of the second brake cable 28
A bracket 30 for supporting one end 29 a of the control device 21 is fixed to the vehicle body 25 near the control device 21.

In Japanese Utility Model Laid-Open Publication No. 63-15261, an operation lever 2 and one end of a brake cable 4 are attached.
A parking brake for a vehicle including a control device 1 including an arm 3 attached to the operation lever 2 is disclosed. However, in these parking brakes, a method of fixing the cable outer to a bracket attached to the vehicle body is used to fix an end portion of the brake cable on the operation lever side. The bending load applied to the inner part of the brake cable may be large due to the vertical movement of the lever or arm, and the brake cable may be broken by fatigue.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a parking brake for a vehicle in which the inner of a brake cable does not become fatigued even when the parking brake is repeatedly operated and deactivated.

[0005]

To achieve the above object, the present invention is characterized in that a brake cable is rotatably supported by a bracket attached to a vehicle body.

[0006]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a parking brake using the present invention, FIG. 2 is a plan view of FIG.
FIG. 3 is an enlarged view of a main part of FIG. 1, FIG. 4 is a side view of a parking brake using an operation lever having another structure of the present invention, and FIG. 5 is a structure of a brake cable and a bracket of the present invention. It is the perspective view shown.

The parking brake includes a control device 2 including an operation lever portion 1 and the like, a brake cable 3 for connecting the control device 2 to a brake (generally a rear brake) of a vehicle (not shown), an adjusting mechanism 4, It has. The control device 2 includes an operation lever 1 as an operation part of a driver, and a base 1b connected to the operation lever 1 via a support shaft 1a and fixed to the vehicle body 5. The brake cable 3 is divided into two parts before and after the adjusting mechanism 4. The first brake cable 6 includes the operating lever 1 and the adjusting mechanism 4.
And two second brake cables 7 are provided to connect the adjusting mechanism 4 to left and right brakes of a vehicle (not shown).

The outer 8 of the second brake cable 7
A bracket 10 for supporting one end 8 a of the control device 2 is fixed to the vehicle body 5 near the control device 2. The bracket 10 is provided with two cable receiving portions 10 a each having a notch 11. The shape of the notch 11 corresponds to the protrusion 12 provided on one end 8 a of the outer 8 of the second brake cable 7.
That is, the notch 11 is provided on both side walls of the two cable receiving portions 10a, and has a shape including a circular portion into which the projection can be inserted. (See FIG. 5) The adjusting mechanism 4 has a U-shaped cross section and three holes. The central hole 4a is used for fixing and adjusting the first brake cable. The fixing method is
A pin 13 is inserted into the hole 4a, and then one end 6a of the first brake cable 6 is passed through a hole provided in the pin 13; Fixed to. Also, in the holes 4b on both sides,
One end 9a of the inner 9 of the second brake cable 7 is connected. (See FIGS. 1, 2 and 5)

With the structure described above, the parking brake is actuated as shown in FIGS. 1 and 4 (indicated by a solid line when not actuated, and by a two-dot chain line when fully actuated). Then, the first brake cable 6 and the inner 9 of the second brake cable 7 connecting between the adjusting mechanism 4 and the bracket 10 are pulled upward in the figure, but the second brake cable 6 7 is rotatable only by being supported by the bracket 10,
A large load is not applied to the inner 9 of the second brake cable 7. In particular, as shown in FIG. 4, the height of the other end 6b of the first brake cable 6 fixed to the operation lever 1 from the vehicle body 5 when the parking brake is activated (FIG.
This is effective in the case of an operation lever having a layout that is greatly different between the middle and the H (indicated by H) and the non-operation (indicated by h in FIG. 4). The operation lever having this structure can have a larger difference between the maximum and minimum operation forces of the operation lever than the operation lever having the structure of FIG. In FIG. 4, the operating force is maximum at the start of pulling and minimum at the end of pulling (in the figure, the start of pulling (non-operation) is indicated by a solid line, and the end of pulling (full operation) is indicated by a broken line).

[0010]

The durability of the brake cable inner can be increased by rotatably supporting the brake cable on the bracket attached to the vehicle body.
Further, as shown in FIG. 4, an operation lever having a wider difference between the maximum and the minimum of the operation lever force can be used, so that the degree of freedom of the operation lever shape can be increased.

[Brief description of the drawings]

FIG. 1 is a side view of a parking brake using the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged view of a main part of FIG. 1;

FIG. 4 is a side view of a parking brake using an operation lever having another structure of the present invention.

FIG. 5 is a perspective view showing a structure of a brake cable and a bracket according to the present invention.

FIG. 6 is a side view of a conventional parking brake.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a perspective view showing the structure of a conventional brake cable and bracket.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operating lever 1a Support shaft 1b Base 2 Control device 3 Brake cable 4 Adjustment mechanism 5 Body 6 First brake cable 6a One end 6b Other end 7 Second brake cable 8 Cable outer 8a One end 8b Projection 9 Cable inner 9a One end 10 Bracket 10a cable receiving portion 11 notch 12 projection

Claims (2)

[Claims] 1. A vehicle parking brake comprising a control device comprising: an operation lever portion having a brake cable fixed at one end; and a base portion supporting the operation lever portion via a support shaft and fixed to a vehicle body. A parking brake for a vehicle, wherein the brake cable is rotatably supported by a bracket attached to a vehicle body. 2. The vehicle parking brake according to claim 1, wherein a projection is provided on an outer of the brake cable, and a notch on which the projection can be assembled is provided on the bracket attached to the vehicle body.