MULTI-DISC TYPE DAMPER USING VISCOUS FLUID

摘要

PURPOSE:To change braking force steplessly by forming a spline at a movable shaft, engaging each movable disc in the state of being free in the axial, peripheral and diametral directions to the required extent and providing an adjusting screw for deforming the shape of a housing at the side part of a cap body. CONSTITUTION:In each of movable discs 7, 7', 7'', engaging claws 7b... are protruded from the inner periphery of a shaft hole 7a and engaged with the spline 2d of a movable shaft 2. The engaging claws 7b... are also engaged to the spline 2d in the state of being free in the axial direction as well as free with clearances G, E in the diametral and peripheral directions. When an adjusting screw is screwed in, an elastic deforming part 1e is pressed to be deformed, the movable disc 7' is shifted by an inner face 1g, a clearance H between the movable disc 7' and the peripheral wall 1c of a housing 1 is changed, and thus contact friction is eventually generated. The braking force of the movable shaft 2 can be enlarged in both viscous shearing resistance and frictional resistance by using a viscous fluid A as well as regulated steplessly.