| 摘要 |
PROBLEM TO BE SOLVED: To easily clean a nozzle head by attaching/detaching the first part without directly touching the first part with hand by disengaging an engaging claw by pressing the jig outside surface by inserting the first part constituting a nozzle into a cylindrical separating jig. SOLUTION: A wash water delivery nozzle 12 is constituted by locking/ connecting the first part 12b having a nozzle head 12a on the tip and the second part 12c by an engaging claw. When separating the first part 12b, a projection formed on the outer periphery of the first part 12b is fitted to the groove-shaped recessed part formed on the inside surface of a cylindrical separating jig 21, the first part 12b is inserted, and when the pressing part 21b on the outer periphery of the separating jig 21 is pressed by a finger, engagement of the engaging claw is released by elastic deformation of the separating jig 21, so that the first part can be pulled out as it is. At joining time, when the first part 12b is housed in the separating jig 21 and is fitted/pressed to the second part 12c, the engaging claw is automatically locked. Thus, the nozzle head 12a can be cleaned by attaching/detaching the first part 12b without directly touching the first part with hand.
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