| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hydraulic pressure connecting joint capable of canceling a connected state in which one joint and the other joint of hydraulic pressure connecting joints are connected to each other by rotating operation without the need to attach/detach a pin keeping the connected state.SOLUTION: A hydraulic pressure connecting joint comprises: a cylindrical connection tool 12 including a fitting hole 11 formed therein and connected to a first fluid passage 5; a shaft-like connection tool 15 including a locking shaft portion 151 that includes a hollow passage 18 connected to a second fluid passage 6 and that is fitted into the fitting hole 11; a pair of pinning long grooves 19 formed in the cylindrical connection tool 12 and each including a communication port e1 that is provided in a center of each groove 19 and that communicates with the fitting hole 11; and a generally U-shaped pin 16 externally fitted to an outer wall surface of the cylindrical connection tool 12 and including a pair of leg parts 162 extending from right and left ends of a central curved portion 161, respectively, the leg parts 162 being engaged with the pinning long grooves 19, respectively and a central portion of each leg part 162 protruding into the fitting hole 11 from the communication port e1, and intermediate portions of the paired leg parts 162 being locked to protruding portions 153 serving as outer circumferential locking portions, respectively, by causing the protruding portions 153 to reach fit positions of the fitting hole 11 rearward of the pin 16 upon keeping the protruding portions 153 at a predetermined angle around a central axis La and by rotating the protruding portions 153 by a retention angle P1 from the fit positions, respectively.</p> |
