Patent ID: 8177038
Filing Date: 2012-05-15
Classification: F16D

Abstract:
1. A disk brake apparatus, comprising: a piston accommodated in the distal end opening side of a cylinder hole; a thrust conversion mechanism arranged on the bottom side of the cylinder hole; and an adjuster having an adjuster nut and an adjuster bolt, the adjuster being provided between the thrust conversion mechanism and the piston; wherein the piston is pushed by the thrust conversion mechanism through the adjuster; wherein the thrust conversion mechanism comprises: wherein the adjuster comprises a thrust transmitting plate at the cylinder hole bottom side end portion, which faces the drive side cam plate; wherein the thrust transmitting plate, the drive side cam plate, and a cam spring for biasing the thrust transmitting plate toward the drive side cam plate are accommodated in a generally cylindrical housing, the housing being mounted in the cylinder hole; wherein engaging protrusions are formed on the outer circumference of the thrust transmitting plate; and wherein parts of the arc face of the circumferential wall of the housing are deformed inwardly to form flat portions, and engaging apertures are formed on a portion of the flat portions, the engaging apertures being configured such that the engaging protrusions are movable only in the cylinder axis direction when the engaging apertures and the engaging protrusions are engaged.