NOISE REDUCTION DEVICE OF A BRAKE FOR ABSORBING COLLISION ENERGY BETWEEN A BACK PLATE AND A BRAKE SHOE IN APPLYING THE BRAKE WITH A BUFFER UNIT

摘要

PURPOSE: A noise reduction device of a brake is provided to absorb collision energy generated between a back plate and a brake shoe and to reduce noise by a structure for relieving collision between the back plate and the brake shoe caused by axial movement of the brake shoe. CONSTITUTION: A noise reduction device of a brake has a buffer unit installed between a brake shoe(51) and a back plate(55) mounted with the brake shoe to relieve collision generated between the back plate and the brake shoe due to axial movement of the brake shoe. The buffer unit is composed of a plurality of rim support tools(61) installed to face a lateral side of a table(51a) of the brake shoe and contacted to the side of the table in moving axially the brake shoe; a plurality of sliding pins(63) mounted at the back plate to move laterally and combined with the rim support tool on one end; and an elastic unit disposed between the back plate and the rim support tool to absorb collision energy between the lateral side of the table and the rim support tool.