| 摘要 |
<P>PROBLEM TO BE SOLVED: To increase joining precision of a joint common rail constituted by welding a first part (for example, a rail main body) and a second part (for example, a connector: the connector is one example of a constituent part of a pipe joint means) mutually simply, inexpensively, and securely. <P>SOLUTION: A positioning part 40 in which the rail main body 20 and the connector 22 are mutually fitted is provided at a position where the rail main body 20 and the connector 22 are abutted when welding. This positioning part 40 is composed of a recessed part (a channel) 41 like a circular ring formed on a first plane 24 of the rail main body 20 and a projecting part (a claw) 42 like a circular ring formed in a tip part of the connector 22. The projecting part 42 of the connector 22 is fitted into the recessed part 41 of the rail main body 20 to perform welding in order to keep high joining precision of the connector 22. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
