Patent ID: 6415896
Filing Date: 2002-07-09
Classification: F16D

Abstract:
A torque-receiving member and a brake cylinder arrangement for a drum brake device, said brake cylinder comprising:a plurality of pistons slidably housed in series within a cylinder body, a wedge-actuating mechanism comprising a wedge and rollers positioned between one pair of facing pistons among said plurality of pistons, a hydraulic chamber formed at another place between another pair of facing pistons among said plurality of pistons, a first boss, through which a rod of said wedge-actuating mechanism is passed, is formed in said cylinder body, a second boss, having an inlet port and outlet port for a fluid channel leading to said hydraulic chamber, is formed in said cylinder body physically separated from said first boss, and said cylinder body is fixed on said torque-receiving member with fixing members arranged around said first boss, wherein said first boss is fit into a boss-fitting hole of said torque-receiving member, and said second boss is positioned adjacent to the outside of the outermost end of said torque-receiving member and physically separated from said fixing member in an axial direction of the cylinder.