| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an insert type pipe joint capable of providing secure sealing by merely inserting a bellows pipe into a joint body, and having a simple and safe structure. SOLUTION: This insert type pipe joint for connecting the bellows pipe F having recessed and projecting portions 18, 20 in corrugated form on an outer periphery, comprises: a joint main body 26 in which a pipe insertion aperture 24 for inserting the bellows pipe is formed and an inner wall surface is stepwise formed; a nut member 30 in the ring shape connected to a leading end of the joint body; a packing member 31 in the ring shape slidably arranged on the inner wall surface of the joint body; a retainer member 48 interposed between the nut member and the packing member, with an inner diameter of the retainer larger than that of an outer diameter of the bellows pipe, and capable of diametrically contracted by inserting the bellows pipe into an inside thereof; and a stop member 44 arranged on a base portion of the packing member for locking the bellows pipe by engaging with the recessed portion of the inserted bellows pipe. The nut member is formed with a fallout preventing taper surface 56 which deforms the retainer member in a diametrically contracting direction when a force is exerted to the bellows pipe in a drawing direction and pushes it into a recessed portion of the bellows pipe.</p> |
