Patent ID: 9423060
Filing Date: 2016-08-23
CPC Classification: F16B,F16K,F16L

Claim Text:
1. A fixing device for a lower-stage member which fixes the lower-stage member arranged between a support member and an upper-stage member and provided with a bolt insertion hole to a support member by a bolt, the fixing device comprising: the bolt insertion hole formed in the lower-stage member and provided with a large-diameter portion having a diameter larger than a diameter of a bolt head portion and a small-diameter portion which is contiguously formed with the large-diameter portion below the large-diameter portion by way of a stepped portion and has an intermediate diameter between the diameter of the bolt head portion and a diameter of a bolt shaft portion, a cylindrical spacer which has an inner diameter larger than the diameter of the bolt shaft portion, has a lower end thereof received by the support member and has an upper end thereof disposed in the inside of the large-diameter portion, the spacer being fitted into the small-diameter portion of the bolt insertion hole, and an elastic member which biases the lower-stage member toward the support member and which is interposed between the bolt head portion and the stepped portion, wherein the lower-stage member is moved upwardly against an elastic force of the elastic member, wherein a result is selected from the group consisting of the following: a gap between the upper-stage member and the lower-stage member can be eliminated, and the elastic member is in a state in which the elastic member can be further elastically deformed by bending from the state.