Patent ID: 8733520
Filing Date: 2014-05-27
Classification: F16F

Abstract:
1. An impact sensitive damper for improving ride comfort by decreasing damping force when an impact is applied to a vehicle and an operating fluid flows into the damper, the impact sensitive damper comprising: a body valve body having compression channels and expansion channels formed therein; a fastener vertically penetrating through the body valve body; a washer disposed on a surface of the fastener; a first dish shaped spring interposed between an upper portion of the body valve body and the fastener; a suction valve disposed on an upper surface of the body valve body; a spring sheet interposed between the suction valve and the first dish shaped spring, the spring sheet having a first surface abutting a surface of the suction valve and a second surface facing and spaced apart from said surface of the suction valve; and a second disk shaped spring interposed between a lower portion of the body valve body and the fastener, wherein: the first dish shaped spring is disposed on the spring sheet and configured to press the washer such that the first dish shaped spring has a slope, relative to the spring sheet, downwards to the fastener, and at the time of a compression stroke when the impact is applied to the damper, when a force caused by a pressure of the operating fluid is larger than a force of the first dish shaped spring pressing the washer, the fastener is relatively displaced with respect to the body valve body due to an elastic deformation of the first dish shaped spring, such that the second disk shaped spring and the lower portion of the body valve body are spaced apart from each other, thereby increasing a channel area of operating fluid.