Patent ID: 9470280
Filing Date: 2016-10-18
CPC Classification: F16D

Claim Text:
1. An irreversible mechanism comprising: an input shaft that receives input of rotational drive force; an output shaft that receives transmission of torque from the input shaft; a ball ramp part including a first plate on the output shaft, a second plate facing the first plate, and a ball that is placed between a first ball ramp of the first plate and a second ball ramp of the second plate, the ball ramp part generating radial force when load torque is applied to the output shaft and the first plate rotates relative to the second plate; a brake lining that receives the radial force from the ball ramp part through the second plate; a brake drum that the brake lining is pressed against when the brake lining receives the radial force from the ball ramp part; and a housing that accommodates the input shaft, the output shaft, the ball ramp part, the brake lining, the brake drum and an energizing means inside.