To more suitably attach a branch pipe joint to a main pipe without causing adhesion failure by more suitably sticking the whole inner surface of a saddle part to an outer surface of the main pipe when the outer surface of the main pipe and an inner surface of the saddle part are adhesively joined to each other.
The branch pipe joint 10 includes the saddle part 20 and a branch pipe part 22 and is used for connecting a branch pipe (14) to a main pipe (12) of a cable protection pipe. In the branch pipe joint 10, a distance W, between side edge parts of an inner surface of the saddle part 20 in the vicinity of a center in an axial direction of a branch-pipe-part protrusion part 20a, is made smaller than a distance W between side edge parts in an outer side part in the axial direction of the branch-pipe-part protrusion part 20a. In the branch-pipe-part protrusion part 20a, the diameter of the saddle part 20 is contracted and the curvature radius of the inner surface of the saddle part 20 is made small.
| JP3028530 | [Name of device] Joint with valve for hot water supply / water supply header |
| WO/2016/143592 | INTAKE MANIFOLD DEVICE |
| JP2004332870 | PIPING UNIT |
ISHIKAWA MAKI
KONDO KAZUKI
INAI TOMOAKI
NTT INFRANET CO LTD
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