Caliper brake

A caliper brake, comprising:

• a brake disc rotating with a wheel of a vehicle;
• an inner brake pad and an outer brake pad respectively disposed on opposite sides of the brake disc;
• a pressing member configured to press the inner brake pad against the brake disc;
• a caliper housing in which the pressing member is movable forward and backward;
• a caliper bridge connected to the caliper housing and configured to press the outer brake pad against the brake disc by a reaction force in response to operation of the pressing member;
• a carrier fixed to a body of the vehicle;
• at least one guide rod fixed to the carrier and guiding sliding movement of the caliper housing and the caliper bridge with respect to the carrier,
• at least one inner pad spring configured to elastically support the inner brake pad and an inner pad plate on which the inner brake pad is fixedly installed;
• at least one outer pad spring configured to elastically support the outer brake pad on a rear surface of the caliper bridge,
• wherein each of the at least one inner pad spring is mounted on a corresponding inner pad plate protrusion formed on a respective side end of the inner pad plate,
• wherein each of the at least one inner pad spring comprises:
• a clip base configured to face or contact a side end of the corresponding inner pad plate protrusion on the inner pad plate, a first anchor portion provided on an upper side of the clip base, and a second anchor portion provided on a lower side of the clip base to elastically support a lower end of the corresponding inner pad plate protrusion,
• wherein the caliper bridge is configured to surround the outer brake pad and cover a front surface of the caliper housing,
• wherein the caliper bridge further comprises:
• an outer spring seat that is recessed from a surrounding area on the rear surface, and on which at least a part of the outer pad spring is settled and supported,
• a first torque supporting protrusion protruding from one side of the outer spring seat to contact and support one side of the outer pad spring,
• a second torque supporting protrusion protruding from the other side of the outer spring seat to contact and support the other side of the outer pad spring, and
• an outer spring fastening groove recessed on an outer surface of the first torque supporting protrusion to support the outer pad spring,
• wherein the outer pad spring is configured to be mounted on a protrusion formed at a side end of an outer pad plate on which the outer brake pad is fixedly installed, and at least a part of the protrusion is settled and accommodated in the outer spring seat,
• wherein the outer pad spring further comprises:
• a first elastic portion interposed between an upper end of the protrusion and a lower end of the first torque supporting protrusion to elastically support the protrusion,
• a second elastic portion provided to be in contact with a side surface of the outer pad plate to elastically support the outer pad plate, and
• a fastening portion inserted into the outer spring fastening groove.