Disc brake

Abstract

The invention provides a disc brake capable of suppressing an increase in the number of parts, upsizing, and deformation by brake torque, besides saving width in the disc rotational direction of a brake pad to ensure enough brake performance. This disc brake is a radial mount type in which a caliper 13 is fixed to a support member by screwing mount bolts into two bolt mounting holes 34a, 34b disposed along a disc radial direction to be separated in a disc rotational direction. In the caliper, a communicating passage 36 is disposed between the bolt mounting hole 34b on the outlet side in the disc rotational direction and the brake pad 17, and the central position C2 in the disc rotational direction of the brake pad 17 is disposed at off-set position to the central position C1 between the bolt mounting holes 34a, 34b separated in the disc rotational direction.

Description

technical field [0001] The present invention relates to a disc brake for vehicle braking, and more particularly to a radial mounting type disc brake in which a caliper is supported on the side of a vehicle body by bolts along the radial direction of the disc. Background technique [0002] As shown in Figure 6, the disc brake includes: a disc 101; a pair of brake pads 102, which are aligned along the axis of the disc 101 in a coordinated and matched position in the disc rotation direction (the left-right direction in Figure 6). (the direction up and down in Fig. 6) is arranged on its two sides; Clamp 105, it coordinates the state that matches the position in the disk rotation direction, is arranged on its both sides along the disk axis and along the disk direction. It is separately arranged, and there are two pairs of cylinder chambers 103a, 103b that can slidably fit and push the pistons 104a, 104b of the brake pads 102 inside; the support member, which fixes the clamp 105 o...

AI Technical Summary

Problems solved by technology

In this way, the amplitude L13 of the brake pad 102 in the disc rotation direction will become shorter, and the braking performance may be reduced.

[0007] In addition, as shown in FIG. 7, the distance L11 between the bolt mounting holes 107a, 107b and the disc 101 is not extended, but in order to ensure sufficient braking performance, it is desired to expand the width L13 of the brake pad 102 in the disc rotation direction. The space 110 in which the brake pad 102 is arranged is also expanded in the disc rotation direction, and the communication path 108 and the bolt mounting hole 107b are formed while avoiding interference, and the bolts are shifted in the disc rotation direction to increase the distance. Mounting holes 107, 107b, as a result, the distance L12 between the bolt mounting holes 107a, 107b is increased, making the clamp 105 larger

[0008] In addition, as shown in FIG. 8, in order to ensure sufficient braking performance, the width L13 of the brake pad 102 in the disc rotation direction is expanded, and at the same time, the enlargement of the clamp 105 is suppressed, and the bolts are suppressed in the disc rotation direction. The expansion of the interval L12 of the holes 107a, 107b, like this, the distance L11 of the bolt mounting holes 107a, 107b and the disk 101 widens, as a result, the distance between the disk 101 and the bolt mounting holes 107a, 107b becomes longer, and the clamp 105 is rotated by The deformation caused by the torque increases

[0009] In addition, as shown in Japanese Patent Laid-Open No. 2000-249173, it is also possible to make a connecting pipe structure that is installed on the outside of the clamp to form a passage, but in this case, the number of parts will inevitably increase and the cost will increase.

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