| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide sealing structure capable of sufficiently preventing that a separation work of an attachment/detachment part is hindered by a seal member with deteriorated slidability and a device for water supply with the same.SOLUTION: Sealing structure SE1 comprises: a connection hole H1; an insertion cylinder P1 which is inserted into the connection hole H1; a groove part 17 formed on the outer peripheral surface of the insertion cylinder P1; and an O-ring 18 which is accommodated in the groove part 17 and seals a gap between the connection hole H1 and the insertion cylinder P1. A first contact surface 20 which contacts the outer periphery of the O-ring 18 is formed in the inner peripheral surface of the connection hole H1. A second contact surface 25 which contacts the inner periphery of the O-ring 18 and compresses the O-ring 18 in cooperation with the first contact surface 20 is formed at a part on the opening side of the connection hole H1 of the bottom 22 of the groove part 17. An escape part 26 further recessed from the second contact surface 25 is formed at a part on the depth side of the connection hole H1 of the bottom 22 of the groove part 17 so as to accept the O-ring 18 when the O-ring 18 deviates to the depth side of the connection hole H1 in the groove part 17.</p> |
