| 摘要 |
<p>PURPOSE: To enable the operation to set an airtight plug to the desired position of the inner circumference of the end part of a conduit in an airtight and stationary manner by projecting a push pile having a pointed end from a plug body in the radial direction by the compression of the airtight rubber, piercing the push pile in the inner circumference of an engaged synthetic resin pipe body so as to be engaged therewith to be served as a reaction receiver of the compression of the airtight rubber. CONSTITUTION: The bottom surface of a recessed part 15 of a plug body 13 and the back surface of a lid 11 are slidable with each other, the symmetrically and inversely tapered surface capable of surface joining on the tapered surface of a moving direction converting part 21 is provided on the rear surface, and a push pile 25 with a shape point extending in the horizontal direction is provided on the forward surface. A head part of a working piece 24 provided with a slidable piece 23 on the inversely tapered surface at the rear surface is engaged with a dove-tail groove of a guide head part of the slidable piece 23, the inverse tapered surface is joined with the moving direction converting part 21, and the push pile 25 is engaged with a through hole 16 cut in a side wall forming the recessed part 15.</p> |
