| 摘要 |
<p>A brake drum is formed by a cylindrical member (111, 211, 311) having an inner circumferential surface against which a brake lining (4) is pressed, an annular pressure receiving portion (112, 212, 312) formed on an outer circumference of the cylindrical member, a damping member (30, 40, 70, 80) provided in contact with the pressure receiving portion, and a tightening bolt for pressing the damping member against the pressure receiving portion. When the drum is vibrated due to the friction between the lining and the inner circumferential surface of the drum during the application of the brake, a relative slip occurs between the pressure receiving portion and a contact surface (opposed surface) of the damping member in accordance with the deformation of the drum which causes this vibration to occur. Since a frictional resistance between the contact surfaces works on this relative slip, the vibration of the drum is damped quickly, and a searching of the brake is minimized.</p> |
