JP2561235Y2 - 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 disk brake device for a vehicle.

[0002]

2. Description of the Related Art FIG. 5 shows an example of a conventional disc brake device. In FIG. 5, a is a caliper of the disc brake device, b is a piston provided in an actuator portion of the caliper a, and c is an opposite side of the piston b. Caliper a
B, a brake pad provided on the piston b side facing the pad c, e a retraction spring inserted between the pads c, d on the outer side, and f a It is a pad spacer made of a synthetic resin such as polyethylene inserted into the gap g between the pads c and d. The original shape is a cylindrical shape, but FIG. 5 shows a flat deformation when pushed between the pads c and d. FIG.

[0003]

In the above-mentioned conventional apparatus, since the retraction spring e and the pad spacer f act on the outside of the pads c and d to act to separate them, the outer sides of the pads c and d are both formed. As it gets wider,
The inside has a narrow inverted-C shape. When the brake assembly shown in FIG. 5 is to be assembled to the vehicle in this state, it is difficult to insert the disk rotor between the pads c and d because the space between the pads c and d is narrow. For this reason, when performing the assembling work, the disk rotor must be fitted between the pads c and d while pushing and spreading the pads c and d. Therefore, there is a problem that the assembling work is complicated and troublesome.

[0004]

According to the present invention, in order to solve the above-mentioned problems, a pair of brake pads are movably mounted on a stationary member, and at least one place between the opposed pads is provided. A disc brake that has a retraction spring that biases both pads in a direction away from the center of the piston on the outer peripheral side of the disc rotor, and that inserts a pad spacer that secures the space between the pads before assembly to a vehicle In the apparatus, an extended portion for expanding the pad on the inner peripheral side of the disk rotor from the center of the piston of the pad spacer is provided on the pad spacer to constitute a disk brake device.

[0005]

As described above, in the present invention, the pad spacer is provided with an extended portion for expanding the pad on the inner peripheral side of the disk rotor from the center of the piston of the pad spacer. In addition, the two brake pads, which have conventionally been formed in a reverse U-shape, can be brought into a parallel state, whereby the distance between the two brake pads can be widened and the assembly of the brake assembly to the vehicle can be facilitated.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the drawing, reference numeral 1 denotes a torque receiving member which is a stationary member of a vehicle disk brake, and reference numerals 2 and 3 denote guide pins projecting from the torque receiving member 1 and reference numerals 4 and 4 slidably provide the guide pins 2 and 3. The caliper 4a is an actuator part, and 4b is a reaction part.

5 is a piston in the actuator 4a, 6
Is an automatic clearance adjusting device accommodated in the piston 5, 7 is a mechanical operating device, and 8 and 9 are pad clips 10 and 11 (see FIGS. 2 and 9) on rails 1a and 1b (see FIG. 2) provided on the torque receiving member 1. 3) is a brake pad movably mounted via the brake pad.

The pad clips 10 and 11 are made of a material having rust prevention and abrasion resistance.
9 also has a vibration preventing function. 12, 13 (see FIG. 1) are shims inserted between the brake pads 8, 9 and the reaction portion 4b of the caliper 4 and the piston 5,
Numeral 14 denotes a retraction spring inserted between the pads 8 and 9 on both sides of the caliper 4 on the outer periphery side of the disc rotor (not shown) from the center of the piston 5 in a compressed state. Pad 8,
9 away from the disk rotor to prevent sliding noise,
This is to prevent the brake pads 8 and 9 from being worn early due to dragging. The retraction spring 14 may be provided only on the reciprocating side of the disk rotor, or may be provided on both the reciprocating side and the revolving side. Is also good.

In this embodiment, as shown in detail in FIG. 4, a synthetic resin is used as a material to form a substantially hairpin shape, and the bent portions 15b project outward at the tips of both legs 15a. And a V-shaped spring portion 15
c to form an extension 15d, and furthermore, both legs 15
The pad spacers 15 are integrally formed by providing rectangular plate-like stopper portions 15e protruding on both right and left sides of the a, and the extended portions 15d of the leg end portions of the pad spacers 15 are compressed through the window holes 4c provided in the caliper 4. Pad spacer
15 between the brake pads 8 and 9
The pad spacer 15 is positioned by contacting the upper surface 15e of the caliper 4 with the upper surface 15e. When the pad spacer 15 is inserted from the window hole 4c of the caliper 4 and attached in this manner, the stopper can be positioned by contacting the stopper portion 15e of the head of the pad spacer 15 with the upper surface of the caliper 4, thereby expanding the pad spacer 15. Part 15d with piston 5
Of the disk rotor from the center of the disk rotor.

[0010]

As described above, in the present invention, the expansion portion 15 for expanding the pads 8 and 9 on the inner peripheral side of the disk rotor from the center of the piston 5 of the pad spacer 15.
Since d is provided on the pad spacer 15, the elastic force of the extension portion 15d allows the two brake pads 8, 9 which have conventionally been formed into an inverted C shape to be in a parallel state. Therefore, according to the present invention, it is possible to obtain an effect that the distance between the brake pads 8 and 9 is widened to facilitate the assembly of the brake assembly to the vehicle.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of the device of the present invention.

FIG. 2 is a front view showing the device of the present invention in a partial cross section.

FIG. 3 is a plan view showing the device of the present invention in partial cross section.

FIG. 4A is a front view of a pad spacer, and FIG.
Is a sectional view taken along the line A-A, and (c) is a plan view of (a).

FIG. 5 is a partial sectional view of a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Torque receiving member 2, 3 Guide pin 4 Caliper 5 Piston 6 Automatic clearance adjustment device 7 Mechanical actuator 8, 9 Brake pad 10, 11 Pad clip 12, 13 Shim 14 Retraction spring 15 Pad spacer 15a Leg 15b Bent 15c Spring part 15d Expansion part 15e Stopper part

Claims (1)

(57) [Scope of request for utility model registration] 1. A pair of brake pads are movably mounted on a stationary member, and at least one position between the opposing pads in a direction away from the center of the piston on the outer peripheral side of the disk rotor. In a disc brake device in which a retraction spring to be urged is provided, and a pad spacer is interposed between the pads before securing the pad to a vehicle, an inner peripheral side of a disc rotor from a center of a piston of the pad spacer. 2. A disc brake device according to claim 1, wherein an expansion portion for expanding the pad is provided on the pad spacer.