Disc brake adopting joint type connecting structure

The invention is applicable to the technical field of vehicle braking, and provides a disc brake adopting a joint type connecting structure. The disc brake comprises a caliper body, an outer brake pad, an inner brake pad and a push disc arranged between the inner brake pad and a caliper. A joint convex strip with an arc-shaped section is arranged on the back face of the outer brake pad, a concave part allowing the joint convex strip to stretch into is formed in the inner side face of the caliper body used for installing the outer brake pad, and the outer brake pad can swing on the caliper body in a reciprocating mode along the axis of the joint convex strip. Therefore, the structural strength of back plates can be improved, the brake pads are stressed in a balanced manner, the deformation of the back plates is small, thus, the stress strength of friction plates is improved, the problems of eccentric wear, falling and the like of the friction plates are prevented, the service life of the brake pads is prolonge