Patent ID: 7717412
Filing Date: 2010-05-18
Classification: F16F

Abstract:
1. A spring-pressurizing unit comprising: a pair of screw members which are respectively formed with male and female screws to be screwed to each other and a shaft having a predetermined length which is formed in a state where the male and female screws are fastened to each other, a spring disposed so as to be wound around the shaft, a pressing member which is disposed on one end of the spring and which is pressed toward the spring in the state where the pair of screw member are fastened to each other, thereby compressing the spring, and a support member which supports the pressing member in a state where the pressing member compresses the spring, wherein the pressing member has a through-hole into which the support member is fitted, wherein the support member is an inner washer which is elastically deformed by receiving pressure from the pressing member in a direction in which a diameter thereof is reduced, the pressing member is an outer washer having the through-hole into which the elastically-deformed inner washer is fitted, and when the outer washer is pushed toward the spring and in the state where the male and female screws are fastened to each other, the inner washer comes out from the through-hole of the outer washer and the diameter of the inner washer is increased thereby supporting the outer washer in a state where the spring is compressed.