JP2566330Y2 - Disc brake device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc brake mounted on an automobile.

[0002]

2. Description of the Related Art FIG. 4 shows a state in the middle of an assembling process in a slide pin portion of a conventional disc brake. In the figure, a is a torque receiving member of a disc brake, b is an arm of a caliper, c is a bush inserted into the arm b, and d is a boot mounted between the bush c and the arm b.

[0003]

As shown in FIG. 4, in order to assemble the disc brake, the arm b of the caliper is used.
Is moved as shown by the arrow B, and the shaft hole e of the bush c is moved.
The guide pin (not shown) is inserted and screwed in while the screw hole f of the torque receiving member a is aligned with the screw hole f. In this case, as shown in the figure, the bush c is If the boot d is protruded, the boot d hits the torque receiving member a to damage the boot d, and in order to prevent the damage, the bush c must be pushed in beforehand.

[0004] The technique disclosed in Japanese Utility Model Publication No. 2-506 is one method for solving the above-mentioned problem. However, this technique employs a method in which one end of a bush has a flange having a diameter larger than the outer diameter of the boot. To prevent the boot from being damaged. However, this method has the problems that the processing of the bush becomes complicated and the assembling of the boot becomes complicated.

[0005]

According to the present invention, a guide pin inserted through a bush into a pair of holes provided in an arm portion of a caliper is screwed into a torque receiving member. A disc brake device in which the caliper is slidably attached to the torque receiving member, and a boot is mounted between an arm portion of the caliper and the bush to protect the sliding portion. A guide slope for pushing the bush in a direction away from the torque receiving member with respect to the caliper during an assembling operation in which the center hole of the bush is aligned with the guide pin screw hole of the torque receiving member by moving the bush in the radial direction of the disc brake. Are provided integrally on the side of the torque receiving member facing the bush.

[0006]

According to the present invention as constructed above, when the caliper is assembled to the torque receiving member fixed to the vehicle body, the caliper is moved in the radial direction of the disc brake so that the center hole of the bush is formed in the torque receiving member. During the assembly work to match the guide pin screw holes, the bush that protrudes extra from the caliper arm automatically retreats in the direction away from the torque receiving member along the guide slope provided on the torque receiving member. In addition, the labor for pushing the bush by hand is omitted, and the assembling is facilitated. And since the guide slope for obtaining such an operation and effect is provided integrally with the torque receiving member, this guide slope can be easily provided on the torque receiving member by simultaneous casting or the like, and the number of parts can be reduced. There is no increase, and in these respects, there is a great advantage in cost. Further, when the bush and the guide slope come into contact with each other, the boot is not pinched, so that the boot can be reliably prevented from being damaged. Further, according to the present invention, since no processing is required for the bush itself, the shape thereof does not become complicated, and there is no adverse effect such as difficulty in manufacturing the bush.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the figure, 1 is a disk rotor, 2 is a torque receiving member of a disk brake fixed to a vehicle body (not shown), 3 is a caliper mounted on the torque receiving member 2 via two guide pins 4, and 5 is a caliper. A piston 6 provided in the caliper 3 is an inner pad pushed out by the piston 5, and 7 is an outer pad arranged so as to face the inner pad 6 via the disk rotor 1.

Reference numeral 3a denotes an arm provided on both sides of the caliper 3. A hole 3b is formed in the arm 3a.
A bush 8 that fits with the guide pin 4 is inserted therein, and a bellows-type boot 9 is mounted between the protrusion of the bush 8 and the arm 3a. Reference numeral 10 denotes a cap fitted to the end of the arm 3a on the side opposite to the torque receiving member 2.
Reference numeral 11 denotes a plug fitted into the cap 10.

As a method of assembling the caliper 3 to the torque receiving member 2, one of the pair of guide pins 4 is attached to the torque receiving member 2, and the caliper 3 is rotated by using one of the guide pins 4 as a fulcrum, and the other guide is rotated. Pin 4
And a method in which the caliper 3 is positioned so as to cover the outer periphery of the torque receiving member 2 without mounting both of the pair of guide pins 4, and then the two guide pins 4 are mounted. But you can.

In the embodiment shown in FIG. 2, a screw hole 2a for screwing a guide pin 4 provided in the torque receiving member 2 is provided.
A guide slope 2b is provided on the outer edge to facilitate movement of the opposing bush 8 away from the torque receiving member 2.

In the embodiment shown in FIG. 3, a plate 12 is joined to an end face 2c of a torque receiving member 2 having a screw hole 2a into which a guide pin 4 is screwed, and an outer portion 12a of the plate 12 is connected. The guide bush 8 is bent obliquely to form a guide slope 12b that facilitates movement of the opposing bush 8 away from the torque receiving member 2.

[0012]

According to the device of the present invention constructed as described above, the caliper 3 is attached to the torque receiving member 2 fixed to the vehicle body.
During assembly, the caliper 3 is moved in the radial direction of the disc brake so that the center hole of the bush 8 is aligned with the guide pin screw hole of the torque receiving member 2. Is automatically retracted in a direction away from the torque receiving member 2 along the guide inclined surface 2b provided on the torque receiving member 2, so that the effort of pushing the bush 8 by hand is omitted, and assembly is easy. become. And since the guide slope 2b for obtaining such an effect is provided integrally with the torque receiving member 2, this guide slope can be easily provided on the torque receiving member 2 by simultaneous casting or the like. There is no increase in the number of parts, which is a great advantage in cost in these respects. Further, when the bush 8 and the guide slope 2b come into contact with each other, the boot 9 is not pinched, so that the boot can be reliably prevented from being damaged. Further, according to the present invention, since no processing is required for the bush itself, the shape thereof is not complicated, and there is no adverse effect such as difficulty in manufacturing the bush.

[Brief description of the drawings]

FIG. 1 is a plan view showing a cross section of a part of a disc brake according to the present invention.

FIG. 2 is a partially enlarged view showing a main part of the present invention in a cross section taken along line AA of FIG. 1;

FIG. 3 is a partially enlarged cross-sectional view showing another embodiment of the present invention.

FIG. 4 is a partially enlarged sectional view showing an example of a conventional device.

[Description of Signs] 1 Disc rotor 2 Torque receiving member 2a Screw hole 2b Guide slope 3 Caliper 3a Arm 4 Guide pin 5 Piston 6 Inner pad 7 Outer pad 8 Bush 9 Boot 10 Cap 11 Plug 12 Plate 12a Outer part 12b Guide slope

Claims (1)

(57) [Scope of request for utility model registration] 1. A caliper is slidably attached to the torque receiving member by screwing a guide pin inserted through a bush into a pair of holes provided in an arm portion of the caliper into the torque receiving member. In a disc brake device in which a boot is mounted between an arm portion of the caliper and the bush to protect a sliding portion, the caliper is moved in a radial direction of the disc brake to torque the center hole of the bush. A guide slope for pushing the bush toward the caliper in a direction away from the torque receiving member is provided integrally on the side of the torque receiving member facing the bush during the assembling work to match the guide pin screw hole of the receiving member. Disc brake device characterized by the above-mentioned.