| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a forming method of the connecting end part of a fluid tube by which sealing structure formed to connect the fluid tube with a connecting body is formed by suppressing the load which acts on an end part of the fluid tube and a diameter expanding tool and a connecting member which are used for the same forming method. <P>SOLUTION: The connecting end part S3 of the fluid tube 11 is formed in the end part of the fluid tube 11 by using an inner sleeve 51 to connect the fluid tube 11 with a coupler. The inner sleeve 51 is formed with a cylindrical inner part 51a and an engaging flange part 51b. When the inner part 51a is inserted into the end part of the fluid tube 11 and a forcing pin 67 is forced into the inner part 51a by using the diameter expanding tool 60, the inner part 51a is expanded. The outer peripheral surface of the inner part 51a is brought into press-contact with the inner peripheral surface of the fluid tube 11 and the fluid tube 11 is also outward bulged. The sealing structure for connecting the the fluid tube 11 with the coupling is formed in the press-contacted part. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
