Akebono Brake Industry Co., Ltd.

Akebono Research and Developement Centre Ltd.

Katsuhiro Miyata

Toshifumi Maehara

Takeshi Noda

Yoshiaki Saitoh

Yukimasa Mitsude

Takayuki Mukasa

A cam mechanismprovided as a shoe drive mechanism includes a cam supporting platebeing loosely and rotatably fitted on an anchor pinfor receiving a shoe operating force, a first cam platerotatably connected to the cam supporting plateat an outer cam supporting position which is a position shifted away from the anchor pinradially outwardly of the drum, a second cam platerotatably connected to the cam supporting plateat an inner cam supporting position which is away from the anchor pintoward an operating force generator, so that a pair of brake shoesare opened outwardly by the separate cam plates, respectively.

Drum brake apparatus

A pair of engaging protrusions provided in a support member and a pair of engaging grooves provided in a back plate of a pad are engaged with each other, and the pad is capable of being displaced only in the axial direction of a rotor. Each engaging protrusion is composed of a rising section and a bent section which is bent at the tip end of the rising section at a right angle. The rising section composes a brake torque bearing section, and the bent section composes a rotation preventing section of the pad. The pad is prevented from rattling with respect to the support member by first and second pad clips.

Floating caliper type disc brake

A liquid-cooled disc brake for use in a vehicle having a rotatable shaft, at least one rotor fitted to the outer peripheral surface of the shaft, in which the rotor is unrotatable but slightly axially movable with respect to the shaft, a caliper secured to the vehicle body, having a first wall, a second wall positioned opposite to the first wall and a third wall. The caliper is substantially U-shaped in section with its inner peripheral side opening to thereby surround the whole perimeter of the rotor. The second wall of the caliper is made hollow so that the cooling liquid circulates freely through the hollow portion of the second wall. The disc brake further includes means for thrusting against the rotor provided at an inner side of the first wall of the caliper. The thrust means is operated at the time when the brake is performed. The disc brake also has at least one stator provided in the opening portion of the U-shaped caliper, where the stator is unrotatable with respect to the caliper, and the stator is urged by the thrust means against the rotor to thereby perform the brake operation. The stator has therein at least one flow channel through which the cooling liquid circulates. The third wall of the caliper has at least one recessed portion which communicates the one flow channel of the stator with another flow channel thereof while maintaining the intended liquid-sealability inside and outside the flow channel.

Growing community of inventors

Tokyo, Japan

Katsuhiro Miyata