| 摘要 |
A liquid send/receive joint device that releases pressure on a false connection prevention key and prevents breakage of the false connection prevention key when a rotary force of a predetermined level or greater is applied to the liquid send/receive joint device while a liquid accepter and a liquid reservoir are connected to each other, is provided. A fuel cell system equipped with such a liquid send/receive joint device is also provided. The liquid send/receive joint device includes: a first joint member 10 having a male joint part 14 ; and a second joint member 50 that has a female joint part 54 to receive the male joint part 14 and is connected to the first joint member 10 . The female joint part 54 has ribs 68 A to 68 D that are inserted into spaces between adjacent engagement protrusions 16 A to 16 D of the male joint part 14 when the female joint part 54 receives the male joint part 14 . When a rotary force of a predetermined level or greater is applied to the liquid send/receive joint device with the ribs 68 A to 68 D inserted in the respective spaces and then the first joint member 10 rotates relative to the second joint member 50 , the ribs 68 A to 68 D cause the engagement protrusions 16 A to 16 D to elastically distort and move relatively in the direction of rotation, and make each engagement protrusion 16 A to 16 D be inserted into another space.
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