To provide a coupling device for a pipe body for liquid, capable of improving sealing capability by a seal member between an inner peripheral surface of a connection hole and an outer peripheral surface of the pipe body and easily inserting the pipe body into the connection hole.
The seal member 7 formed out of an elastic material is provided at the inner peripheral surface of the connection hole 3 in which a secondary side piping (pipe body) 1 is inserted from a right end opening portion, a stop ring 5 is provided on a right side of the seal member 7, and an engagement member 6 is provided on a left side of the seal member 7. The stop ring 5 is fixed at a position in an axial direction of the connection hole 3. The engagement member 6 is provided on the seal member 7 side so as to be moved freely. The engagement member 7 is jointed with an inner core 12 of the secondary side piping 1 inserted in the connection hole 3 so as to integrally move in a right direction.
KAMIKAWADOKO TAKESHI
IWAKATA MARIO
WATANABE HIROKI
KOYO SANGYO CO
Harada Sanjugi
Next Patent: COUPLING DEVICE FOR PIPE BODY FOR LIQUID