Patent ID: 6082784
Filing Date: 2000-07-04
Classification: B21D,F16L,Y10S,Y10T

Abstract:
A connection structure for connecting an eye-joint and a slender metal pipe, comprising: an eye-joint body having an annular groove in its head and two side through holes leading to said annular groove to form parallel flat seat surfaces on the outer circumferences of said through holes, and including a branch pipe protruded integrally from said eye-joint body and having a stepped fitting hole formed in the circumferential side and leading to said annular groove; and a slender metal pipe adapted to have its connection end portion fitted in the fitting hole of the branch pipe of said eye-joint body,wherein the improvement comprises: an elastic seal ring member fitted in the inner circumference of said fitting hole; hold means for holding said elastic seal ring member in position; and caulking means for caulking the vicinity of the end portion of said branch pipe together with said connection end portion, after said connection end portion is inserted into said branch pipe, thereby to effect the connection.