JP2560993Y2 - Disc brakes for vehicles - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a disc brake used for a traveling vehicle such as a motorcycle.
The present invention relates to a disk brake for a vehicle in which a caliper is disposed on a slide pin supported by a slide pin holding portion of a bracket formed over the outer periphery of a disk rotor.

[0002]

2. Description of the Related Art A pair of slide pins disposed between a bracket and a caliper are disposed on an outer peripheral side of a disk rotor, and a slide pin holding portion of a bracket for supporting the slide pins is formed across the outer periphery of the disk rotor. For example, a disk for a vehicle having a structure in which one of the slide pins is removed when the pad is replaced and the caliper and the bracket are provided with holding means for holding the caliper when the caliper is rotated with the other slide pin as a spindle. A brake is disclosed in JP-A-56-18128.

In the disc brake disclosed in the above publication, holding means comprising a parallel projection and a single projection are respectively provided on a bracket (carrier) and a caliper, one slide pin is removed, and the other slide pin is supported. The caliper is rotated by a predetermined angle as an axis so that the two holding means are opposed to each other. Thereafter, the caliper is slid along the slide pin, and a single projection is inserted into the gap between the parallel projections, so that the two holding means are engaged with each other, and the caliper is engaged. Is held in a predetermined open position.

[0004]

However, in recent years, calipers have been increased in size with the increase in the diameter of the disk rotor in order to improve braking performance, and the calipers have become heavier. Therefore, when the caliper is held on the bracket by a pair of projections provided on the bracket and the caliper as in the disc brake disclosed in the above-mentioned publication, the caliper is inserted into a slide pin or a pin hole formed in a slide pin holding portion of the bracket. Due to the weight or inclination in the width direction, excessive load is applied to the slide pin and pin hole,
There is an inconvenience that deformation such as indentation and distortion occurs. In particular, the above-mentioned problem is likely to occur depending on the position of the caliper attached to the vehicle body and the amount of slide pin inserted into the pin hole. In the disc brake disclosed in the above publication, the caliper released to a predetermined position is slid along a slide pin, and a single protrusion is fitted into a gap between the parallel protrusions, thereby engaging the two holding means with each other to hold the caliper. There is also a problem that the operation has to be complicated because it must be held at a predetermined open position.

[0005] The present invention has been made in view of such circumstances, and a purpose thereof is to support one slide pin even for a large and heavy caliper which has been frequently used recently. When rotating as a shaft, the caliper is securely held at the specified open position without being deformed due to excessive load on the slide pin and the pin hole formed in the slide pin holding part of the bracket. It is an object of the present invention to provide a vehicle disk brake that does not need to perform the above operation.

[0006]

According to the present invention, at least one of a pair of slide pins disposed between a bracket and a caliper is disposed on an outer peripheral side of a disk rotor, and one of the slide pins is provided. In a vehicle disc brake in which a slide pin holding portion of a bracket supporting a pin is formed across the outer periphery of the disc rotor, the other of the slide pins is removed, and the caliper is rotated with one of the slide pins as a support shaft. When the side of the working portion and the side of the reaction portion sandwiching the bridge portion of the caliper abut against each other, the convex portion that regulates the side surface of the caliper from contacting the outer peripheral surface of the disk rotor is formed as a slide pin holding portion of the bracket. It is characterized by being formed in.

[0007]

When the caliper is rotated with one of the slide pins as a support shaft, the side of the working portion and the side of the reaction portion sandwiching the bridge portion of the caliper abut on the projection formed on the slide pin holding portion of the bracket and are supported. The caliper is held at a predetermined open position without imposing an excessive load on the slide pin or the pin hole serving as the support shaft.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show a first embodiment of the present invention. A bracket 4 for supporting a caliper 2 of a disc brake 1 so as to be movable in an axial direction of a disc rotor 3 is provided with a bracket 4 of the disc rotor 3. It is disposed on one side, has a substantially U-shape in a front view, has a storage recess 6 for the friction pad 5 formed at the center, and has slide pin holding portions 7 and 8 formed at both ends extending to the outer periphery of the disk rotor 3. Is attached to the knuckle 9 on the inner peripheral side of the disk rotor 3.

The slide pin holding portions 7 and 8 straddle the outer periphery of the disk rotor 3 and protrude to both sides of the friction pad 5 on the storage recess 6 side and on the inside of the tip end extending to the other side of the disk rotor 8. Engagement steps 7a, 8a for supporting the lugs 5a, 5a are formed.

The slide pin holding portions 7 and 8 have a slide pin holding hole 7 having a bottom in the axial direction of the disk rotor 3.
b, 8b are formed respectively, and the slide pin holding hole 7 is formed.
Slide pins 10 screwed to a pair of support arms 2b, 2b protruding from both sides of the action portion 2a of the caliper 2 are inserted through the caliper 2 and the caliper 2 in the axial direction of the disk rotor 3, respectively. It is movably supported.

The caliper 2 has an operating portion 2a and a reaction portion 2c.
And a friction pad 5 disposed on one side of the disk rotor 3 is pushed by a piston 10 inserted into a cylinder hole 2e formed in the action portion 2a. The disk is moved in the axial direction of the disk rotor 3 by the reaction force, and the reaction portion 2c pushes the friction pad 5 disposed on the other side of the disk rotor 3 to perform a braking operation.

A tie bar 11 is provided between the tips of the slide pin holding portions 7 and 8, and a disk rotor is provided on the outer surface of the slide pin holding portions 7 and 8 in parallel with the slide pin holding holes 7b and 8b. The projections 7c, 8c are formed so as to be continuous from one side to the other side and extend from the tip side of the slide pin holding portions 7, 8.

With this configuration, for the purpose of replacing the friction pad 5, for example, as shown in FIG.
When one of the slide pins (not shown) is removed and the caliper 2 is rotated with the remaining slide pin 10 as a support shaft, the side surfaces of the bridge portion 2d, the acting portion 2a, and the reaction portion 2c of the caliper 2 become convex portions 7c. And restricts the side surface of the caliper 2 from contacting the outer peripheral surface of the disk rotor 3.

Further, since the caliper 2 is supported by contacting the side surfaces of the bridge portion 2d, the action portion 2a and the reaction portion 2c with the projection 7c, even the large and heavy caliper 2 is inclined in the width direction. Is kept in a stable state without
Since unreasonable load and unbalanced load are not applied to the slide pin 10 and the slide pin holding hole 7b, the slide pin 10
And the slide pin holding hole 7b is securely held at a predetermined open position without deformation such as indentation or distortion.

In this embodiment, the slide pin holding hole 7b is provided.
Although the case where the slide pin 10 held by the slide pin 10 is rotated about the support shaft is shown, the same applies to the case where the slide pin held by the slide pin holding hole 8b rotates about the support shaft.

In this embodiment, a pair of slide pin holding portions 7 and 8 formed on the bracket 4 are arranged so as to straddle the outer periphery of the disk rotor 3, but are arranged between the bracket and the caliper. At least one of the pair of slide pins is disposed on the outer peripheral side of the disk rotor, and the slide pin holding portion of the bracket supporting the one slide pin is formed across the outer periphery of the disk rotor. Can be implemented similarly.

FIG. 3 shows a pair of slide pin holders 7 and 8.
The protrusions 7d and 8d on the outer surface of the caliper 2 contacting the side of the action portion 2a and the protrusions 7e and 8e on the side of the reaction portion 2c of the caliper 2 are formed at the same height.
FIG. 4 shows an embodiment, and FIG. 4 also shows a caliper 2 on the outer surfaces of a pair of slide pin holding portions 7 and 8 as in FIG.
This shows a third embodiment of the present invention in which the projections 7f, 8f with which the side of the action portion 2a abuts and the projections 7g, 8g with which the side of the reaction portion 2c of the curiper 2 abuts are formed at the same height.

[0019]

As described above, according to the present invention, when one of the slide pins is removed and the other is supported by the slide pin holding portion of the bracket straddling the outer periphery of the disk rotor, the bridge portion of the caliper is connected to the bridge portion of the caliper. Since the convex part where the side of the acting part and the side of the reaction part contact each other is formed, when the caliper is rotated with one slide pin as the supporting axis, for example, to replace the friction pad, the slide that is the supporting shaft The caliper is held at a predetermined open position without imposing an excessive load on the pin or the pin hole, and restricts the side surface of the caliper from contacting the outer peripheral surface of the disk rotor.

In particular, even if the caliper is large and heavy, no excessive load or unbalanced load is applied to the slide pin serving as a support shaft, and deformation such as indentation, distortion, and the like can be prevented. In addition, no special operation is required to hold the caliper in the predetermined open position, and the work is simple simply by rotating the caliper to the regulation position.
The rigidity of the bracket is improved by projecting the convex portion on the slide pin holding portion.

[Brief description of the drawings]

FIG. 1 is a rear view of a disc brake showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a bracket according to the first embodiment.

FIG. 3 is a perspective view showing a bracket according to a second embodiment.

FIG. 4 is a perspective view showing a bracket according to a third embodiment.

[Explanation of symbols]

1. Disc brake, 2. Caliper, 2a Working part,
2c: reaction portion, 2d: bridge portion, 3: disk rotor, 4: bracket, 5: friction pad, 7, 8: slide pin holding portion, 7c, 8c, 7d, 8d, 7e, 8e,
7f, 8f, 7g, 8g ... convex part, 10 ... slide pin,

Claims (1)

(57) [Scope of request for utility model registration] At least one of a pair of slide pins disposed between a bracket and a caliper is disposed on an outer peripheral side of a disk rotor, and a slide pin holding portion of a bracket for supporting the one slide pin is provided on the disk. In the vehicle disk brake formed across the outer periphery of the rotor, when the other of the slide pins is removed and the caliper is rotated with one of the slide pins as a support shaft,
A convex portion is formed on the slide pin holding portion of the bracket so that the side of the working portion and the side of the reaction portion sandwiching the bridge portion of the caliper come into contact with each other and restrict the side of the caliper from contacting the outer peripheral surface of the disk rotor. A disc brake for a vehicle, comprising: