| 摘要 |
<p>PROBLEM TO BE SOLVED: To smoothly slide a sliding pin and a pin hole so as to prevent generation of judder and squeak by narrowly forming a shape of at least one sliding pin hole toward a rotor outlet side. SOLUTION: A brake torque transmitted from a rotor 1 to a caliper 5 through each frictional pad 23, is acted as a bending moment for displacing the caliper 5 in an arrow A direction. An arm part 2Aa of an outlet side is opened to a rotational direction A, and a sliding pin 11 is decentered with respect to a rotary shaft of the rotor 1. In this time, since a pin hole 3a fitted to the sliding pin 11 is not formed in a mere circular hole, and is formed in a differential hole which is narrowed in an outlet side direction of the rotor 1, the arm part 2Aa is opened to the rotational direction A side, and thereby, the sliding pin 11 is relatively moved to a direction where a diameter of the pin hole 3a is formed largely. As a result, a sliding resistance of the sliding pin 11 is reduced, and the caliper 5 is smoothly slid. It is thus possible to avoid eccentric abrasion and the like of the frictional pad 23.</p> |
