To provide a branch fitting capable of absorbing extension and contraction of a resin pipe in accordance with changes of temperature, maintaining connection with the resin pipe stably or realizing firm connection with the resin pipe, and ensuring strength of a branch pipe for connecting an external device or a branched pipe.
A collar part 22a formed on the branch pipe 22 is locked into an inner face of a flow passage hole of a fitting main body 11 to protrude a cylindrical part 22b of the branch pipe 22 from an outer face, and a part in the vicinity of a through hole 11a of the fitting main body 11 is nipped and held by a fixing device 23 mounted annularly in the cylindrical part 22b and the collar part 22a to fix the branch pipe 22. In addition, a heating wire 31 is arranged in at least one section among the connection parts with the resin pipe B to realize a connection structure by electric fusion.
| JPH0996391 | HOSE |
| JP2004211937 | DRAIN HOSE |
TAKAHASHI TSUNEAKI
NISHIKATA NOBUHIRO
TAKADA EIJI
| JP2002039488A | 2002-02-06 | |||
| JPS497519A | 1974-01-23 | |||
| JPH0256997A | 1990-02-26 | |||
| JPS58149492A | 1983-09-05 | |||
| JP2005321034A | 2005-11-17 | |||
| JPS62118187A | 1987-05-29 | |||
| JPH05180385A | 1993-07-20 | |||
| JPS5353023A | 1978-05-15 | |||
| JPS5464867A | 1979-05-25 | |||
| JPH06193310A | 1994-07-12 | |||
| JPS63195181A | 1988-08-12 | |||
| JP2005155705A | 2005-06-16 |
Yasuhiro Shioda