| 摘要 |
<p>PROBLEM TO BE SOLVED: To stably fix a coupling pipe with comparatively high pull-out strength by a comparatively low cost facility. SOLUTION: In a coupling fixing structure for fixing a coupling pipe 29 fitted into a coupling hole 26 of a body main body 16 of a super small solenoid valve 10, the vicinity of the coupling hole 26 on an outer wall of the body main body 16 is locally caulked, and thereby, the coupling pipe 29 is deformed in an elliptical shape cross section together with the coupling hole 26 so as to caulk and fix to the body main body 16. The vicinity part of the coupling hole 26 which is locally caulked is a pair of parts separated from each other holding the coupling hole 26. The pair of parts have a prescribed length extending to the diameter direction of the coupling hole 26, and constitutes point symmetry around the coupling hole 26, and are formed in a circular arc shape recessed toward the coupling hole 26.</p> |
