JPS6240180Y2 - - Google Patents

Description

[Detailed description of the invention] This invention not only determines the set position of the caliper in a disc brake, but also makes it easy to check the distance the caliper moves due to pad wear, and easily measures the amount of pad wear. The present invention relates to a sliding distance control device for a caliper in a disc brake.

The caliper of a disc brake starts from the position when a new pad, that is, an unworn pad, is installed, and by subsequent brake operation, the caliper moves in the direction opposite to the direction of the force pressing the pad by the amount of wear on the worn pad. The pad is formed to move in the direction of the reaction of the force that presses the pad. However, in the prior art, the starting point of the movement of the caliper of a disc brake was not clearly indicated by providing a stopper or the like as a device, and the starting point of movement was determined to be the position where a new pad was installed each time. Therefore, when this relationship is looked at in detail, the following problems are inherent.

FIG. 1 is an explanatory diagram in which a part of an anchor plate part and a caliper part of a conventional disc brake is shown in cross section, with some parts omitted. In the figure, 1 is an anchor plate part, 2 is a caliper part, and 3 is a disc rotor. 4 is a piston, 5 is a pad back metal, and 6 is a semi-worn pad. For ease of understanding, Figure 1 shows the caliper set position when the new product pads are installed. Therefore, between the friction surface 31 of the disc rotor 3 and the semi-worn pad 6, a spacing "B" is shown. In other words, the half-worn pad 6 is removed by an amount corresponding to the interval "B".
indicates wear. In the conventional example,
Since the caliper part 2 is not provided with a stopper, etc., when installing a partially worn pad 6 that has been used to some extent during a car body inspection, etc., the caliper part 2 is not equipped with a new pad. From the position, the mounting nut 32 of the disk rotor 3
It may happen that the tip 2a of the caliper part 2 and the mounting nut 32 are moved to the side by an extra distance "B" (the position indicated by the dotted line in the figure) to a position where they overlap. If the disc rotor 3 is driven in this state, the mounting nut 32 will collide with the caliper portion 2, and the brake device will be damaged.

This invention solves the above problems by providing a stopper on the caliper part 2, and at the same time makes it possible to easily check the amount of movement of the caliper and the amount of wear on the semi-worn pads 6. The object is to provide a sliding distance control device.

This invention will be explained in detail based on illustrated embodiments.

Fig. 2 is a front view of the anchor plate part and caliper part of the disc brake according to this invention, and Fig. 3 is a partially enlarged side view of Fig. 2 seen from the right. The plate portion 2 is a caliper portion. In this invention, unlike the conventional example, a stopper 23 is fixed to the end surface part 22 of the rail part 21 of the caliper part 2 that engages with the guide part 11 of the anchor plate part 1 and slides, so that the caliper part 2 can be moved. Form to control the starting point. In principle, the position where the end face 12 of the guide part 11 of the anchor plate part 1 and the end face 22 of the rail part 21 of the caliper part 2 overlap is the starting point of movement of the caliper 2 when a new product pad is installed. Therefore, the stopper 23 can be formed by screwing a flat washer with a bolt or screw. That is, the caliper part 2 comes into contact with the end face part 22 of the rail part 21 in the caliper part 2 and also contacts the end face part 12 of the guide part 11 in the anchor plate 1, so that the caliper part 2 can move to the left in FIG. A stopper 23 is provided to prevent this. In other words, the caliper part 2 does not move beyond the position where the new product's pads are installed. Due to wear of the pad, the stopper 23 may be damaged in the guide portion 1 of the anchor plate 1.
It is formed so as to be separated from the end face portion 12 of No. 1. or,
If there is a change in the thickness of the pad, the stopper 23 uses a stepped washer 24 as shown in FIG. 21 and the stepped flat part 2 of the stepped part 24a of the stepped washer 24.
4b is formed so as to abut against the anchor plate 2 and determine the starting point of movement of the caliper 2.

Since this invention is constructed as claimed in the utility model registration claims based on the above-mentioned embodiment, the starting point of the movement of the caliper is fixed, and even when installing partially worn pads, the caliper can be easily set.
We were able to eliminate the situation where the tip of the caliper would hit the disc rotor mounting nut. In addition, the distance between the washer and anchor plate caused by sliding of the caliper indicates the amount of wear on the pads, so you can easily check the amount of wear on the pads from inside the wheel without removing the wheel. You can know when to replace the. The amount of wear on the pad is indicated by the length between the stopper fixed to the end face of the rail part of the caliper part and the end face of the anchor plate guide part. In other words, since it is indicated by the distance between the ends across the space, compared to the conventional example in which the scale is indicated by a pointer and a scale plate, there is no situation where the scale plate is buried in adhering dust and becomes unreadable. Furthermore, since the structure is simple, it is possible to provide a practical caliper sliding distance control device for disc brakes that does not lead to high product costs.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram with a part of the anchor plate part and caliper part of a conventional disc brake in cross section and partially omitted, and Fig. 2 is a front view of the anchor part and caliper part of the disc brake according to this invention. , FIG. 3 is a partially enlarged side view of FIG. 2 viewed from the right, FIG. 4 is a plan view of the stepped washer, and FIG. 5 is a front view thereof. Explanation of symbols, 1...Anchor plate part, 11
...Guide part, 12... End face part, 2... Caliper part, 21... Rail part, 22... End face part, 23...
...Stopper, 24...Stepped washer, 24a...Stepped part, 24b...Stepped flat part, 3...Disc rotor, 31...Friction surface, 32...Mounting nut,
4... Piston, 5... Pad washer, 6... Semi-worn pad.

Claims (1)

[Claims for Utility Model Registration] (1) In a disc brake having a caliper that slides while engaging with a guide portion of an anchor plate, a caliper portion 2 that slides while engaging with a guide portion 11 of an anchor plate portion 1. The end face 22 of the rail part 21 contacts the end face 22 of the rail part 21 at the same time as the end face 12 of the guide part 11 of the anchor plate part 1, and the caliper part 2
A sliding distance control device for a caliper in a disc brake, characterized in that a stopper 23 that separates from an end face 12 of a guide portion 11 in an anchor plate portion 2 by sliding is fixedly provided. (2) The caliper in the disc brake according to claim 1 of the utility model registration claim, characterized in that the stopper 23 is formed by screwing a flat washer onto the end surface 22 of the rail portion 21 of the caliper portion 2. Sliding distance control device. (3) The stopper 23 is attached to the stepped washer 24 formed so that the stepped flat part 24b of the stepped part 24a comes into contact with the anchor plate part 2.
A sliding distance control device for a caliper in a disc brake according to claim 1, characterized in that the device is screwed onto an end surface portion 22 of a rail portion 21 of the invention.