Disk brake

A disk brake comprising:

• an attachment member having a pair of pin support sections in which pin holes extending in a disk axial direction are formed and disposed to cross an outer circumferential side of a disk, and fixed to a non-rotating section of a vehicle;
• a caliper having a pair of slide pins slidably inserted into the pin holes at both sides in a disk circumferential direction and movably supported by the attachment member in the disk axial direction;
• and
• a pair of pads movably supported by the attachment member and pressed against both surfaces of the disk by the caliper,
• wherein, in the pair of slide pins, one slide pin comprises:
• a pin main body having an annular groove on a tip side;
• and
• a tubular elastic deformation member having a plurality of convex sections on an inner circumferential side which are configured to be deflected in the disk axial direction when the slide pin moves in the disk axial direction and provided in the annular groove, and
• wherein the convex sections are each formed in a conoidal shape and are disposed in a lattice shape.