BRAKE PAD AND CALIPER DEVICE

摘要

A brake pad 10 can control rotating of a disc 200. The brake pad 10 includes a friction material 12 provided on a side of the disc 200 and a back plate 11 bonded to the friction material 12 on an opposite side of the disc 200. The back plate 11 has a plurality of ridges 111 and/or a plurality of grooves 112 each formed on an entirety of a surface of the back plate 11 on the side of the friction material 12 so that longitudinal directions of the ridges 111 and/or the grooves 112 are inclined all together with respect to a rotational direction of the disc 200 at a predetermined angle. The friction material 12 is bonded to the back plate 11 so as to make close contact with a surface defining each ridge 111 and/or each groove 112 and the surface of the back plate 11 on the side of the friction material 12. An average height of the ridges 111 or an average depth of the grooves 112 is preferably in the range of 2 to 6 mm. This makes it possible to provide a brake pad 10 having high bonding strength between the friction material 12 and the back plate 11 and excellent durability, and a caliper device provided with the brake pad 10.