| 摘要 |
<p>PURPOSE:To provide good swinging.bending property and sealing property altogether and facilitate assembling property. CONSTITUTION:The ball surface part 2 of a coupler main body 1 is inserted in a connecting main cylindrical body 5, the ball surface part 2 is supported and received by respective sliding contact surfaces 7, 11 of an annular bush 6 and a ring member 10, a sealing ring 8 having X-shaped cross section is provided in a space 36 which is formed between both members 6, 10, and the coupler main body 1 is swingably fixed. The ball surface part 2 is supported and received by the POM made annular bush 6 and a POM made ring member 10, so that looseness of the coupler main body 1 is eliminated, the flaw of attack, etc., is prevented on the ball surface part 2 even if a pipe coupler receives impact, and good seal property is obtained by the seal ring 8. And assembling work is facilitated since the number of construction parts is small.</p> |
