JPS6428355U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a front view showing an automatic cable tension adjustment device for a parking brake, which is an embodiment of the present invention. FIG. 2 is an enlarged view of the saw teeth provided on the first rotating body of the device of FIG. FIG. 3 is an enlarged view of the saw teeth provided on the second rotating body of the device of FIG. FIG. 4 is a diagram showing a state in which the parking brake lever is rotated from its original position during initial adjustment of the device shown in FIG. FIG. 5 is a diagram showing a state in which the parking brake lever, which was rotated during the initial adjustment of the device shown in FIG. 1, has been returned to its original position. FIG. 6 is a diagram showing a state in which an excessive operating force is applied to the parking brake lever in the apparatus shown in FIG. 1. FIG. 7 is a front view showing another embodiment of the present invention. 10: Parking brake lever, 12: Pin (first axis), 14: Pin (second axis), 16: First rotating body, 18: Cable, 24: Pole (first rotation prevention means), 26, 50 :Second rotating body, 42:
Pole (second rotation prevention means), A: tension increasing direction, B: one direction and opposite direction.

Claims (1)

[Claims for Utility Model Registration] (1) In a parking brake of the type in which the operating force of a parking brake lever disposed rotatably around a first axis is transmitted via a cable, the tension of the cable is A device that automatically adjusts in accordance with the rotational operation of the parking brake lever, which is disposed on the parking brake lever so as to be rotatable about a second axis parallel to the first axis, and is provided on the outer periphery. a first rotating body to which an end of the cable is connected; and a second rotating body that is rotatable about the first axis and that is directly or indirectly engaged with the first rotating body. , disposed on the parking brake lever;
A first rotating body that prevents the first rotating body from rotating around the second axis in a direction opposite to the direction in which the tension of the cable is increased, and allows the first rotating body to rotate in the direction that increases the tension of the cable. one rotation prevention means, which is arranged in a fixed position so that the first rotating body rotates in the tension increasing direction as the parking brake lever is rotated from its original position; and a second rotation preventing means for preventing rotation of the second rotating body in one direction around the first axis and allowing rotation of the second rotating body in a direction opposite to the one direction. A parking brake cable tension automatic adjustment device featuring: (2) The first rotation preventing means prevents the first rotation body from rotating at the same rotation prevention position when the amount of rotation of the first rotation body around the second axis is less than or equal to a predetermined certain angle. The cable tension automatic adjustment device for a parking brake according to claim 1, wherein the rotation prevention position is changed only when the rotation prevention position exceeds the certain angle. (3) The second rotating body includes a first member meshed with the first rotating body and a second member whose rotation in the one direction is prevented by the second rotation blocking means, The first member and the second member are biased so that the first member relatively rotates in a direction opposite to the one direction around the first axis, and the stopper rotates the first member relative to the first member. Rotation is regulated and the rotation is always performed integrally, but when the rotational force in one direction applied to the first member from the first rotating body exceeds a predetermined constant force,
The automatic cable tension adjustment device for a parking brake according to claim 1 or 2, wherein the first member is rotated in the one direction relative to the second member.