| 摘要 |
PURPOSE: A brake pad of a disc brake is provided to repress the DTV(Disk Thickness Variation) growth of a brake disc and continuously hold the durability and operation stability and quality of a brake system by coping with a conning phenomenon of the brake disc with a simple structure and regulating behaviors of the brake pad. CONSTITUTION: A brake pad(7) of a disc brake is composed of a back plate including successive metals having different thermal expansion coefficients along the radial direction of a brake disc(1). The metal having a small thermal expansion coefficient is positioned in the radial direction of the brake disc and the metal having a large thermal expansion coefficient is out of the radial direction. The difference of the thermal expansion coefficients is set almost same with the proportion of inner and outer diameters to the thermal expansion of the brake disc and accordingly, the thermal expansion of the back plate makes a lining follow the thermal deformation of the brake disc.
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