Patent ID: 6729448
Filing Date: 2004-05-04
Classification: E05F,E05Y,F16D,Y10T

Abstract:
A rotary damper comprising: a housing with a chamber with an inner peripheral surface; a drive shaft with an axis and with a base end side housed inside the chamber; a rotary member housed inside said chamber axially supported by the drive shaft; and a viscous fluid filled inside said chamber,wherein said rotary member comprises: a basement portion rotatably supported by said drive shaft; a slide member arranged movably relative to said axis and having an outer surface complementary to a part of the inner peripheral surface of said chamber; and a torque adjustor capable of moving said slide member; a spring energizing the slide member against said torque adjustor, said spring being not substantially projected from the outer surface of said slide member, a radial clearance having a predetermined interval formed between the outer surface of said slide member and the inner peripheral surface of said chamber, said torque adjustor being moveable along said drive shaft, said slide member sliding along said basement portion in such a manner as to change said radial clearance between the outer surface of said slide member and the inner peripheral surface of said chamber, therby changing a shearing resistance of the viscous fluid existing in said radial clearance so that rotary torque of said rotary member is changed.