Toyota Jidosha Kabushiki Kaisha

Toru Matsushima

Ikuru Konno

Ryutaro Misumi

Yoshitomo Deno

Dominic Cote Vaillancourt

A disc brake device () includes: a disc rotor () rotatable around its rotation axis; a pair of brake pads () provided opposite to each other on both sides of the disc rotor in an axial direction along the rotation axis; and a pressing mechanism () able to press the brake pads against the disc rotor from both sides of the disc rotor with pistons () provided opposite to each other on both sides of the disc rotor in the axial direction. Each brake pad has a friction material () facing a corresponding friction face () of the disc rotor. The number of slits () provided in the friction material of one of the brake pads and not passing through any pressing portions pressed by the pistons is different from the number of slits provided in the friction material of the other one of the pair of brake pads and not passing through any pressing portions.

Disk brake device and pair of brake pads

A disc brake apparatus that can keep a stable contact state between a torque transmitting part of a brake pad and a torque receiving part of a mounting, so as to reliably suppress a brake noise phenomenon. At the time of forward braking where a main body member of a brake pad is pressed against a disc rotor, the rotational moment acting on the main body member of the brake pad from the disc rotor is absorbed by the main body member rotating relative to a forward braking torque transmitting member about one pin joint, so as to be restrained from being transmitted to the forward braking torque transmitting member. As a result, the respective contact states between two torque transmitting protrusions formed in the forward braking torque transmitting member of the brake pad and torque receiving surfaces formed in a forward braking torque receiving part of a mounting are held stable.

Growing community of inventors

Machida, Japan

Toru Matsushima