JPH022980Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a so-called floating type vehicle disc brake.

[Conventional technology]

In this type of disc brake, a sliding pin is screwed onto a bracket fixed to the vehicle body, and the sliding pin is inserted into a mounting hole formed in each mounting boss portion of the caliper, and the caliper is guided by the sliding pin. is moved in the axial direction of the brake disc, and a pair of friction pads placed between the action and reaction parts of the caliper clamp the brake disc, which is rotating together with the wheel, to perform braking action.

[Problem that the invention attempts to solve]

However, in the case of the above structure, the sliding pin may turn due to vibrations during driving, and the threaded connection between the sliding pin and the bracket may become loose.

Therefore, an object of the present invention is to provide a disc brake in which the sliding pin is prevented from rotating so that the threaded connection between the sliding pin and the bracket does not become loose.

[Means for solving problems]

To achieve the above object, the present invention supports a pair of friction pads placed on both sides of a disk that rotates together with the wheel via a retainer of a bracket fixed to the vehicle body, and also pushes the friction pads. In a pin slide type vehicle disc brake in which the caliper is supported on the bracket so as to be slidable in the disc axial direction via a sliding pin, the sliding pin is formed with an engaging portion for preventing rotation, and the retainer is provided with the engaging portion. It is characterized by providing a locking protrusion that engages with the mating portion.

[Effect]

With this configuration, the locking protrusion of the retainer and the sliding pin are engaged to prevent the sliding pin from rotating.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

A bracket 2 is fixed to the vehicle body on one side near the disk 1 which rotates together with the wheels. This bracket 2 has arm parts 3, 3 arranged at a predetermined interval, and sliding pins 4, 4 are screwed onto these arm parts 3, 3, respectively. On the opposing surfaces, a pair of left and right guide portions 5, 5 are formed in a stepped manner in the disk axial direction, respectively.

Friction pads 6 (one not shown) are disposed on both sides of the disk 1, and the friction pads 6 are attached to the guide portions 5, 5 of the bracket 2 by retainers 9 by ears 7, 8 formed on the left and right sides thereof. , 9 in the disk axial direction and pushes the friction pad 6. A caliper 10 is located on one side of the disk 1, and the sliding pins 4, 4 into the bracket 2.
It is possible to move in the axial direction of the disk.

As shown in FIG. 3, the sliding pin 4 has a plurality of notches 4c formed on the outer periphery of a seating surface 4b of a bolt portion 4a that is screwed onto the bracket 2, and serves as a locking engagement portion.

Further, the retainer 9 has a locking protrusion 9b protruding from the outside of a guide portion 9a that guides the ears 7, 8 of the friction pad 6, which engages with the notch 4c of the sliding pin 4.

After the sliding pin 4 configured in this way is screwed onto the bracket 2, when the retainer 9 is inserted into the guide portion 5 of the bracket 2, the locking protrusion 9 of the retainer 9
b locks into a notch 4c formed on the outer periphery of the seat surface 4b of the sliding pin 4 and prevents the sliding pin 4 from rotating, so that the sliding pin 4 and the bracket 2 do not loosen.

4 to 7 show another embodiment of the present invention, in which a sliding pin 20 that slidably supports the caliper 10 in the disk axial direction connects the tip of the bolt portion 20a to the disk 1 of the bracket 2. The bolt part 20a is exposed to the side and screwed onto the bracket 2, and a plurality of axial locking grooves 20b are formed on the outer periphery of the bolt part 20a.

A retainer 21 that supports a pair of friction pads 6, 6 disposed on both sides of the disk 1 so as to be slidable in the disk axial direction is attached to the bridge portion 2a of the bracket 2.
A locking protrusion 21 is attached to the guide portion 5 of the bracket 2 by locking the locking portion 21a, and the locking protrusion 21 engages with the locking groove 21b of the sliding pin 20 at the tip of the locking portion 21a.
b is provided protrudingly.

As a result, the sliding pin 20 screwed onto the bracket 2 is restricted from rotating in the removal direction, and the sliding pin 20 is prevented from rotating in the removal direction.
No looseness of 0 occurs.

FIGS. 8 and 9 each show another embodiment of the engaging portion formed on the sliding pin, and the sliding pin 22 shown in FIG. 8 has a cross-shaped engaging portion at the tip of the bolt portion 22a. The sliding pin 23 shown in FIG. 9 has a stopper part 23 at the tip of the bolt part 23a that comes into contact with the locking protrusion 21b of the retainer 21 when the bolt part 23a rotates in the removal direction.
It forms b.

[Effect of idea]

As described above, the present invention supports a pair of friction pads placed on both sides of a disk that rotates together with the wheel via a retainer of a bracket fixed to the vehicle body, and also supports a pair of friction pads that push the friction pads. In the pin slide type vehicular disc brake in which the bracket is slidably supported in the disc axial direction via a sliding pin, the sliding pin is formed with a rotation-preventing engagement part and the retainer is engaged with the retainer. Since a locking protrusion is provided that engages with the retainer, the locking protrusion of the slide pin engages with the locking protrusion of the retainer, restricting the rotation of the slide pin in the removal direction, and preventing the screw of the slide pin and bracket. The garment will not come loose.

[Brief explanation of drawings]

Figures 1 to 3 show one embodiment of the present invention, in which Figure 1 is a partially sectional front view of the disc brake, Figure 2 is an enlarged view of the sliding pin screwing part, and Figure 3 is A perspective view of the sliding pin, and FIGS. 4 to 7 show another embodiment of the present invention. FIG. 4 is a partially sectional front view of the disc brake, and FIG.
6 is an enlarged view of essential parts, FIG. 7 is a perspective view of the sliding pin, and FIGS. 8 and 9 are perspective views showing other embodiments of the sliding pin. 1...Disk, 2...Bracket, 4...Sliding pin, 4c...Notch, 6...Friction pad, 9
...Retainer, 9b...Disc locking protrusion, 1
0... Caliper, 20, 22, 23... Sliding pin, 20b, 22b, 23b... Engaging portion, 21...
...Retainer, 21b... Locking protrusion of retainer.

Claims (1)

[Scope of utility model registration request] A pair of friction pads placed on both sides of a disk that rotates together with the wheel is supported via a retainer of a bracket fixed to the vehicle body, and a caliper that pushes the friction pads is attached to a sliding pin on the bracket. In a pin slide type vehicle disc brake that is slidably supported in the axial direction of the disc through the pin slide, a locking protrusion is formed on the sliding pin to prevent rotation, and the retainer is engaged with the engaging part. A pin slide type disc brake for vehicles, which is characterized by being equipped with.