| 摘要 |
PURPOSE: A press fastening bolt is provided to maintain close connectivity between a screw hole and a press fastening member by preventing an elastic member becoming narrow by inserting a second member into a cut groove of a first member. CONSTITUTION: A press fastening bolt (10) includes a first member (100) and a second member (200). The first member branches a fastening rod into more than one elastic member (114) by forming a cutting groove (112) in the fastening rod in which a screw thread (111) is formed on the outer circumference. The first member changes diameter size of the upper part of the fastening rod by narrowing or widening the upper part of the elastic member elastically around a joint part (117) through the joint part joining the bottom of the elastic member. The second member narrows or widens more than one elastic member according to the state of being combined to the inside of the cutting groove so that the diameter of one side of the outer circumference is equal to the diameter of the other side of the outer circumference of the elastic member when the second member is combined into the cutting groove. |
