| 摘要 |
PROBLEM TO BE SOLVED: To provide a connecting structure of a branch pipe in a liquid supply device enabling reliable connection between a branch pipe and a liquid supply pipe in a single action. SOLUTION: The connecting structure of a branch pipe in a liquid supply device is prepared so as to connect the branch pipe 6 for supplying liquid to soil to the liquid supply pipe 5 in the liquid supply device. In the structure, the liquid supply pipe 5 is provided with a connection hole 51, a connection cylinder 7 made of flexible material and provided with an insertion cylinder part 71 to be inserted into the connection hole 51, the outer diameter of the insertion cylinder part 71 is formed so as to be larger than the inner diameter of the connection hole 51, the outer periphery of the insertion cylinder part 71 is provided with an engaging groove part with which the inner periphery of the connection hole 51 of the liquid supply pipe 5 can be engaged, the outer periphery at the tip end side of the insertion cylinder part 71 nearer than the engaging groove part of the insertion cylinder part 71 is provided with a tapered guide surface, an orifice 71 is formed at the inside of the liquid path of the connection cylinder 7, and the connection cylinder 7 is provided with an air suction hole 75 for taking the outside air into a liquid passage L. COPYRIGHT: (C)2006,JPO&NCIPI
|
