JPH0313629Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a disc brake for a vehicle that supports a caliper via a sliding pin.

[Conventional technology]

A disc brake for a vehicle has a caliper equipped with a pair of friction pads that pinch a disc that rotates together with the wheel, and is supported movably in the axial direction of the disc via a sliding pin on a bracket fixed to the vehicle body. be.

[Problem that the invention attempts to solve]

However, in the above structure, a gap is formed for sliding between the sliding pin and the sliding pin insertion part of the bracket, so when installed on an all-terrain vehicle such as a buggy, The sliding pin may be struck by the vibration of the caliper, causing abnormal wear on the sliding pin.

Therefore, an object of the present invention is to provide a disc brake for a vehicle having a structure that prevents vibration of the caliper.

[Means for solving problems]

In order to achieve the above object, the present invention uses a bracket fixed to the vehicle body to straddle the bridge part of the caliper.
In a disc brake for a vehicle in which a caliper is movably supported in the axial direction of the disc via a sliding pin on the bracket, the caliper is supported in the axial direction of the sliding pin between the bracket and the central upper part of the bridge part of the caliper. The feature is that a damper member is interposed so as to apply force in a direction perpendicular to the direction.

[Effect]

This dampens the vibration of the caliper and prevents the sliding pin from being struck.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

1 to 4 show a first embodiment of the present invention, in which a vehicle disc brake 1 has a bracket 2 fixed to the vehicle body that straddles a bridge portion 4c of a caliper 4. 2 supports a caliper 4 via sliding pins 3, 3 so as to be movable in the axial direction of the disk 5.

The caliper 4 has an action part 4a and a reaction part 4b.
and a bridge portion 4c connecting these by straddling the outer periphery of the disk 5, and sliding pins 3, 3 screwed onto support arms 4d, 4d, respectively, are connected to the bracket 2.
are inserted into the sliding pin insertion holes 2a of the
A pair of friction pads 6, 6 placed opposite each other with the disk 5 in between is suspended by a hanger pin 7 so as to be movable in the axial direction of the disk.

Further, a cylinder 4e is formed in the action portion 4a, and a piston 8 is fitted into the cylinder 4e in a liquid-tight and movable manner. is defined, and one end is connected to the piston 8 in the hydraulic pressure chamber 9.
A push rod 10 is disposed, the other end of which extends through the bottom of the hydraulic pressure chamber 9 in a fluid-tight manner.

Further, a parking brake mechanical actuation mechanism 11 is provided outside the bottom of the cylinder 4e. This actuation mechanism 11 includes a housing 13 which is connected to the outside of the action part 4a by screws 12, 12.
, a cast-in nut 14 cast into the housing 13 , a threaded rod 15 that is threaded into the cast-in nut 14 with a multi-start thread, an operating lever 16 fixed to the outer end of the threaded rod 15 , and a threaded rod 15 The screw rod 15 and the adjusting bolt 17 are screwed into each other and have their tips abutted against the other end of the push rod 10. When the operating lever 16 is rotated, the threaded rod 15 and the adjusting bolt 17 are rotated. The push rod 10 is pushed to move the piston 8 forward in the direction of the disk 5 to perform a braking action.

Further, a damper spring 18 attached to the bracket 2 is in contact with the upper center of the bridge portion 4c of the caliper 4, and the caliper 4 is moved as shown in FIGS. 1 and 2.
In the figure, it is pressed downward, that is, in a direction perpendicular to the axes of the sliding pins 3, 3.

As shown in FIG. 4, the damper spring 18 clamps the bracket 2 with three mounting claws 18b, 18c, and 18d formed on the base 18a, and is bent into a U-shape from the base 18a. The pressing part 18f at the tip of the extending elastic part 18e is attached by contacting the bridge part 4c of the caliper 4, so that the caliper 4 can slide the sliding pin 3 fixed to the support arm 4d on the bracket 2. It is resiliently supported on the lower surface of the pin insertion hole 2a.

Therefore, even if the caliper 4 attempts to vibrate due to its own weight, the elastic portion 18e of the damper spring 18 buffers and prevents the vibration, and the sliding pins 3, 3 are inserted into the sliding pin insertion holes 2a, 2a of the bracket 2. 2
Since the sliding pins 3, 3 are no longer struck within a, and the sliding pins 3, 3 are uniformly pressed, the sliding pins 3, 3
The caliper 4 can be smoothly moved.

Further, FIG. 5 shows a second embodiment of the present invention, in which there is a space between the base 20a of the damper spring 20 and the bracket 2, and between the pressing part 20b and the central upper part of the bridge part 4c of the caliper 4. The elastic members 21 and 22 are interposed to enhance the cushioning effect.

Furthermore, FIG. 6 shows a third embodiment of the present invention, in which the damper rubber 3 attached to the bracket 2
0 is one in which a locking claw 30a that clamps the bracket 2 is embedded in a buffer part 30b and formed integrally.
The lower surface of the buffer section 30b is connected to the bridge section 4 of the caliper 4.
c, and urges the caliper 4 downward.

[Effect of idea]

As described above, the present invention provides a disc brake for a vehicle in which a bracket fixed to the vehicle body straddles the bridge portion of the caliper and supports the caliper movably in the disc axial direction via a sliding pin on the bracket. A damper member is interposed between the bracket and the upper center of the bridge portion of the caliper so as to bias the caliper in a direction perpendicular to the axial direction of the sliding pin, so that the damper member is in a well-balanced position. The vibration of the caliper is damped, the sliding pin is not struck by the vibration of the caliper, abnormal wear of the sliding pin can be prevented, and the caliper can move smoothly.

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the present invention, FIG. 1 is a front view, and FIG. 2 is a -
A sectional view, Figure 3 is a - sectional view of Figure 1, and Figure 4 is a cross-sectional view of Figure 1.
The figure is a perspective view of a damper spring, FIG. 5 is a sectional view of the bridge portion of the bracket and caliper showing the second embodiment of the present invention, and FIG. 6 is the bridge portion of the bracket and caliper showing the third embodiment of the present invention. FIG. 1... Vehicle disc brake, 2... Bracket, 3... Sliding pin, 4... Caliper, 4c...
...Bridge part, 18, 20...Damper spring.

Claims (1)

[Scope of utility model registration request] In a disc brake for a vehicle in which a bracket fixed to the vehicle body straddles the bridge part of the caliper and supports the caliper movably in the disc axial direction via a sliding pin on the bracket, the bridge part between the bracket and the caliper is located at the center of the brake part. Between the top and
A disc brake for a vehicle, characterized in that a damper member is interposed so as to bias the caliper in a direction perpendicular to the axial direction of the sliding pin.