Patent ID: 6324739
Filing Date: 2001-12-04
Classification: B23P,B25B,Y10T

Abstract:
An inner ring press-insertion jig for a pipe joint made of resin which is pressingly inserted and fixed in one end portion of a pipe member made of resin by relative movement in an axial direction with respect to the pipe member, comprising:a sleeve-like inner ring;a diameter-increasing ring member having a variable outer diameter is fitted onto a front small-diameter portion of a holder to be movable in the axial direction, said sleeve-like inner ring being inserted into and held by said holder;said diameter-increasing ring member is configured so that an outer diameter is changed to a maximum outer diameter by movement in the axial direction with respect to said holder, the maximum diameter being equal to or larger than an outer diameter of a tip end portion of said inner ring, and to a minimum outer diameter by movement in another one of the axial directions with respect to said holder, the axial diameter being smaller than an inner diameter of said inner ring; anda fixing structure which, when the diameter of said diameter-increasing ring member is changed to the maximum outer diameter, positionally fixes said diameter-increasing ring member to said holder is formed between said diameter-increasing ring member and said holder in a manner that the fixation can be canceled.