| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a piping connecting device which connects the respective units of the domestic fuel cell by pipe lines, wherein the fuel cell can easily be attached and has a cost reduction effect. <P>SOLUTION: In the piping connecting device, a sleeve 12 comprises a cylinder portion 12a and a large-diameter axis portion 12d, and in the outer-periphery intermediate portion thereof, a level-difference portion is formed having a vertical surface 12e which abuts on the end surface of an engaging portion 10b of a main body side. In the axis portion 12d, a large-diameter engaging portion 12b is formed, and on the left side thereof, a level-difference portion 12c is formed, and further, the pair of the engaging portions are disposed opposite to each other via the vertical surface 12e, in a state of being sandwiched by the main body of an engaging member 18. A pipe 14 having an outer diameter A is clamped fixedly on the inner peripheral surface of the sleeve 12. The outer diameter of a pipe portion 14a positioned on the inner peripheral surface of the sleeve 12 is made larger than the outer diameter A owing to the fixedly clamping process. The pipe portion extended from the fixedly clamping portion in the right direction thereof constitutes an O-ring storing portion X. The storing portion has a bending portion 14b abutting on the left side-surface of the O-ring, a pipe-line portion 14c abutting on the inner-diameter portion of the O-ring, and a flare 14d for preventing the falling-out of the O-ring. <P>COPYRIGHT: (C)2009,JPO&INPIT |
