Oil hole sealing plug structure and opposed piston type disc brake

摘要

An oil hole sealing plug structure is provided with a large diameter portion (44) and a small diameter portion (43) respectively formed in an oil hole (20b), and a plug (48) provided on an inside of the large diameter portion (44). One end face (60) of the plug (48) is pressed against a seal surface (45) formed in a continuous portion between the large diameter portion (44) and the small diameter portion (43) to thereby liquid-tightly close a portion of the oil hole (20b). A pressing member (47) is fixed to the inside of the large diameter portion (44). A pressing portion (49) formed in one end face of the pressing member (47) is pressed against a plane-shaped pressure receiving portion (59) formed in the other end face of the plug (48).