Abstract: In an adjustable board storage frame, a fixed side plate 5 and a movable side plate 6 that can be moved remaining parallel with the fixed side plate 5 and fixed at a desired position are placed between a top plate 2 and a base plate 3. The adjustable board storage frame includes: pinions 21 and 22 located near the four corners of the movable side plate 6; guide rails 11A and 11B that are located on the inside surfaces of the top plate 2 and the base plate 3 and on which racks 17 and 18 for engaging with the respective pinions 21 and 22 are formed; bosses 35 protruding from positions near where the respective pinions 21 and 22 for the movable side plate 6 are formed; grooves 14 that are formed near the position where the fixed side plate 5 is located on the top plate 2 and the base plate 3, and to which the bosses 35 can be inserted respectively; and connection paths 15 that are connected to the grooves 14 respectively, and where the bosses 35 pass when the movable side plate 6 is moved.

Abstract: A liquid send/receive joint device that has a simplified configuration, is composed of a small number of components, is of small size, and can be manufactured at low cost and prevent liquid leakage, is provided; and a fuel cell system equipped with such a liquid send/receive joint device is also provided.

Abstract: 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 68A to 68D that are inserted into spaces between adjacent engagement protrusions 16A to 16D of the male joint part 14 when the female joint part 54 receives the male joint part 14.

Abstract: In an adjustable board storage frame, a fixed side plate 5 and a movable side plate 6 that can be moved remaining parallel with the fixed side plate 5 and fixed at a desired position are placed between a top plate 2 and a base plate 3. The adjustable board storage frame includes: pinions 21 and 22 located near the four corners of the movable side plate 6; guide rails 11A and 11B that are located on the inside surfaces of the top plate 2 and the base plate 3 and on which racks 17 and 18 for engaging with the respective pinions 21 and 22 are formed; bosses 35 protruding from positions near where the respective pinions 21 and 22 for the movable side plate 6 are formed; grooves 14 that are formed near the position where the fixed side plate 5 is located on the top plate 2 and the base plate 3, and to which the bosses 35 can be inserted respectively; and connection paths 15 that are connected to the grooves 14 respectively, and where the bosses 35 pass when the movable side plate 6 is moved.