JPH0510830U - Disc brake device - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] When assembling the brake assembly to the vehicle, prevent both brake pads from collapsing to facilitate the assembly work. A pair of brake pads 8 and 9 is movably mounted on a stationary member, and the pads are separated from the center of the piston 5 at the outer peripheral side of the disc rotor at least at one place between the opposing pads. A pad spacer 1 which is provided with a retraction spring 14 for urging the pad in the direction and secures a space between the both pads before mounting on a vehicle.
In the disc brake device in which the pad spacer 15 is inserted, the pad spacer 15 is provided with an expansion portion for expanding the pad on the inner peripheral side of the disc rotor from the center of the piston 5 of the pad spacer 15.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disc brake device for a vehicle.

[0002]

[Prior Art]

 FIG. 5 shows an example of a conventional disc brake device. In the figure, a is a caliper of the disc brake device, b is a piston provided on the actuator portion of the caliper a, and c is a caliper a on the opposite side of the piston b. A brake pad provided on the reaction portion, d is a brake pad provided on the piston b side so as to face the pad c, e is a retraction spring inserted on the outer side between these pads c and d, and f is It is a pad spacer made of synthetic resin such as polyethylene inserted in the gap g between the pads c and d, and the original shape is cylindrical, but in FIG. 5, it is flat when pressed between the pads c and d. It is shown in a deformed state.

[0003]

[Problems to be solved by the device]

 In the above-described conventional device, the retraction spring e and the pad spacer f exert an acting force that separates the pads c and d from the outside, so that the pads c and d are wide on the outside and narrow on the inside. It becomes the shape of. If the brake assembly shown in FIG. 5 is to be mounted in a vehicle in this state, it is difficult to insert the disc rotor between the pads c and d because the inner space between the pads c and d is narrow. For this reason, when performing the assembling work, it is necessary to fit the disc rotor between the pads c and d while expanding the pads c and d, which causes a problem that the assembling work is complicated and troublesome.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, in the present invention, a pair of brake pads are movably mounted on a stationary member, and the outer periphery of the disc rotor is located at least at one place between the opposing pads from the center of the piston. In the disc brake device, a retraction spring for urging the two pads away from each other is provided, and a pad spacer that secures a space between the two pads is inserted before assembly to a vehicle. The disc brake device is configured by providing the pad spacer with an expansion portion for expanding the pad on the inner peripheral side of the disc rotor from the center of the piston.

[0005]

[Action]

 As described above, according to the present invention, the pad spacer is provided with the expansion portion for expanding the pad on the inner peripheral side of the disk rotor with respect to the center of the piston of the pad spacer. The two brake pads, which were in the shape of C, can be placed in parallel with each other, which can increase the gap between the two brake pads and facilitate the assembly of the brake assembly to the vehicle.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. In the figure, 1 is a torque receiving member which is a stationary member of a vehicle disc brake, 2 and 3 are guide pins protruding from the torque receiving member 1, and 4 are slidable with respect to these guide pins 2 and 3. In the caliper provided, 4a is its actuator part and 4b is a reaction part.

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

The pad clips 10 and 11 are made of a material having rust prevention and abrasion resistance, and also have a vibration preventing function for the brake pads 8 and 9. 12, 13 (see FIG. 1) are shims inserted between both brake pads 8, 9 and the reaction portion 4b of the caliper 4 and the piston 5, and 14 is a disk rotor (from the center of the piston 5 on both sides of the caliper 4). (Not shown) is a retraction spring that is inserted in a compressed state between both pads 8 and 9 on the outer peripheral side, and when the brake is released, the brake pads 8 and 9 are separated from the disc rotor to cause a sliding noise. And the early wear of the brake pads 8 and 9 due to dragging. The retraction spring 14 may be provided only on the turn-in side of the disk rotor, or on the turn-in side and the turn-out side. May be provided in both.

In the present embodiment, as shown in detail in FIG. 4, a synthetic resin is used as a material and formed into a substantially hairpin shape, and bent portions 15b project outwardly at the tips of both leg portions 15a thereof. In addition, a V-shaped spring portion 15c is provided on the inside thereof to form an expanded portion 15d, and further, a rectangular plate-shaped stopper portion 15e is provided on the head portion so as to project on both left and right sides of both leg portions 15a. The pad spacer 15 is integrally formed, and the pad spacer 15 is inserted between the brake pads 8 and 9 while the expanded portion 15d of the leg end portion of the pad spacer 15 is compressed from the window hole 4c provided in the caliper 4. The pad portion 15 is positioned by bringing the stopper portion 15e into contact with the upper surface of the caliper 4. In this way, when the pad spacer 15 is inserted from the window hole 4c of the caliper 4 and attached, the stopper portion 15e of the head of the pad spacer 15 comes into contact with the upper surface of the caliper 4 for positioning. It is possible to reliably position the expanded portion 15d on the inner peripheral side of the disk rotor with respect to the center of the piston 5.

[0010]

[Effect of the device]

 As described above, in the present invention, since the pad spacer 15 is provided with the expansion portion 15d 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, the expansion portion is formed. By the elastic force of 15d, both brake pads 8 and 9 which are conventionally in the shape of an inverted C can be made parallel. Therefore, according to the present invention, it is possible to widen the space between the brake pads 8 and 9 to facilitate the assembly of the brake assembly to the vehicle.

[Brief description of drawings]

1 is a vertical 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 section.

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

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

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

[Explanation of symbols]

 1 torque receiving member 2, 3 guide pin 4 caliper 5 piston 6 automatic clearance adjusting device 7 mechanical actuating device 8, 9 brake pad 10, 11 pad clip 12, 13 shim 14 retraction spring 15 pad spacer 15a leg 15b bent part 15c Spring part 15d Expansion part 15e Stopper part

Claims (1)

Claims for utility model registration: A pair of brake pads are movably mounted on a stationary member, and at least one place between the opposing pads is closer to the outer periphery of the disc rotor than the center of the piston. In the disc brake device in which a retraction spring that urges both pads in the direction of separating the two pads is provided, and a pad spacer that secures a space between the both pads is inserted before assembly to a vehicle, a piston of the pad spacer A disc brake device, wherein an extension portion for expanding the pad is provided on a pad spacer on the inner peripheral side of the disc rotor with respect to the center.