| 摘要 |
PURPOSE:To make a separate component part unnecessary and also to prevent troubles such as water leakage by making the connection only at one location by an arrangement in which by simply inserting a nozzle into a hose, an inwardly facing hook at the end of the hose is engaged with a groove in the outer surface of the nozzle to prevent a slip-out. CONSTITUTION:A hose 3 having a stretchable bellows structure is formed integrally with and under a hot water reservoir tank 1 with the same material as the reservoir tank 1. The end of the hose 3 has a receptacle 5 that receives a nozzle 4 of a heat collecting plate 2, and the nozzle 4 is inserted into the receptacle to connect with the heat collecting plate 2. The nozzle receptacle 5 has a diameter larger than that of the hose 3, and has a tapered, inwardly facing hook 6 on the inner rim of its opening. A rubber packing 7 is placed on the bottom of the receptacle 5 for sealing water. The outer surface of the nozzle 4 has a groove 8 with which the inwardly facing hook 6 engages when the nozzle 4 is inserted into the receptacle 5. |
