JPS59124478A - Regulator for step clearance of hydraulic brake for car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pedal travel adjustment device for a hydraulic brake for a vehicle.

Hydraulic brakes installed in vehicles such as motorcycles are generally configured to convert the force of pressing a brake pedal into hydraulic pressure using a mask cylinder, and use this hydraulic pressure to actuate the brakes for braking.

The brake pedal is located adjacent to the footrest.
The rider places his heel on the footrest side and operates the brake pedal with his toe. For this reason, the positional relationship between the brake pedal and the footrest is generally adjusted to suit the rider's physique. On the other hand, if the brake pad in the brake braking unit wears out to a considerable extent, the distance the brake pedal must be pressed becomes large, so it is necessary to adjust the distance accordingly.

Conventionally, the adjustment of the pedal stroke and the position of the brake pedal with respect to the footrest have been performed by independent mechanisms, resulting in complicated mechanisms and troublesome operations.

SUMMARY OF THE INVENTION In view of the above-mentioned problems in the prior art, an object of the present invention is to provide a hydraulic brake pedal stroke adjustment for a vehicle, which allows simultaneous adjustment of the brake pedal stroke distance and the position adjustment of the footrest by simply operating the mechanism at one location; The goal is to provide the equipment.

In order to achieve the above-mentioned object, the pedal travel adjustment device for a hydraulic brake for a vehicle according to the present invention is provided by attaching a mask cylinder to a vehicle body so that the sliding direction of the piston within the mask cylinder is in the front-rear direction of the vehicle body; It is characterized in that it is interlocked and connected to the end of the swinging arm of the brake pedal via a rod that is adjustable and reciprocally movable in the longitudinal direction of the vehicle body.

The present invention will be explained below with reference to embodiments shown in the drawings.

FIG. 1 shows an outline of a motorcycle equipped with the device of the present invention, and FIG. 2 shows an enlarged view of the main parts thereof.

In this figure, 1 is a front wheel and 2 is a rear wheel.

A disc brake 3 is provided on the rear wheel 2, and the disc brake 3 is composed of a disc 3a and a caliper 3b for squeezing the disc 3a. 4 is a mask cylinder attached to the vehicle body 6 in a substantially horizontal state; 5 is an oil storage tank attached to this mask cylinder 4; 7 is a brake pedal; 8
is the footrest. The swinging arm 7a has the brake pedal 7 fixed to its upper end, is swingable about a shaft 7b, and has its opposite end connected to the mask cylinder 4 via a rod 9. The rod 9 has a male screw rod 9a and a female screw rod 9b screwed together, and a lock nut 9C.
The length can be adjusted by adjusting the screwing position.

Since the mask cylinder 4 is mounted substantially horizontally to the vehicle body, the piston 10 within the mask cylinder 4 reciprocates so as to slide in the longitudinal direction of the vehicle body, as shown in the enlarged sectional view of FIG. A male threaded rod 9a of a rod 9 is connected to this piston 10 via a push rod 11.

In the above-mentioned hydraulic brake device, when the brake pedal 7 is depressed, the swing arm 7a rotates around the shaft 7b and pushes the rod 9 toward the mask cylinder 4, thereby causing the piston 10 in the mask cylinder 4 to move into the second position. 3 Move it to the left side of the figure. Therefore, the mask cylinder 4 generates oil pressure, and supplies the pressurized hydraulic oil to the caliper 3b to brake the rear wheel 2.

Now, in the above-described hydraulic brake system, the relative position between the brake pedal and the footrest can be adjusted by adjusting the length of the rod 9 and the screw engagement between the male threaded rod 9a and the female threaded rod 9b. It can be adjusted to any position by rotating it around the center. On the other hand, the brake pads in the caliper 3b have worn out considerably,
When the pedal stroke of the brake pedal 7 increases, the length of the rod 9 may be increased by adjusting the engagement between the male threaded rod 9a and the female threaded rod 9b. This extension of the rod 9 allows the depression of the brake pedal 7 to be made appropriate. That is, in the above-mentioned hydraulic brake device, the mask cylinder 4 is mounted approximately horizontally on the vehicle body 6, and the piston 10, which reciprocates in the longitudinal direction of the vehicle body within the mask cylinder 4, is connected to the piston 10 via the rod 9 whose length can be freely adjusted. Since the brake pedal 7 is connected to the swing arm 7a of the brake pedal 7, by simply adjusting the length of the rod 9, it is possible to adjust both the stepping distance of the brake pedal 7 and the position with respect to the footrest 8. .

As described above, in the vehicle hydraulic brake pedal travel adjustment device according to the present invention, the mask cylinder is attached to the vehicle body so that the sliding direction of the piston in the mask cylinder is in the longitudinal direction of the vehicle body, and the piston is It is configured to be connected to the end of the swinging arm of the brake pedal via a rod that can freely adjust the length and can reciprocate in the longitudinal direction of the vehicle body, so you can adjust the travel distance of the brake pedal simply by adjusting the length of the rod. and position adjustment with the footrest can be achieved at the same time. Therefore, the mechanism can also be simplified.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of a motorcycle equipped with the device of the present invention, and Fig. 2 is a side view showing an enlarged view of only the main parts of the device.
FIG. 3 is an enlarged sectional view of the master cylinder portion of the device. 3. Disc brake, 4. Mask cylinder, 6. Vehicle body, 7. Brake pedal, 7a. Swing arm, 7b. Axis, 8. Footrest, 9. Rondo, 9a. Male screw rod. , 9b... Female threaded rod, 10... Piston. Agent: Patent Attorney Shin Ogawa − Patent Attorney Ken Noguchi Teru Patent Attorney Kazuhiko Saishita

Claims (1)

[Claims] The mask cylinder is attached to the vehicle body so that the sliding direction of the piston inside the mask cylinder is in the longitudinal direction of the vehicle body, and the piston is connected to the brake pedal via a rod whose length is freely adjustable and which can reciprocate in the longitudinal direction of the vehicle body. A pedal clearance adjustment device for a hydraulic brake for a vehicle, characterized in that it is interlocked and connected to the end of a swinging arm.