| 摘要 |
PROBLEM TO BE SOLVED: To prevent the slipping-out of a cap of a cylinder body upper part of an air injector. SOLUTION: One end part of a cylinder body 4 communicates with an air injection hose 8 via an air passage 6 of a pedestal 2, and the other end part is opened. A piston 10 is arranged in the cylinder body 4, and the inside of the cylinder body 4 is partitioned into one end part side room and the other end part side room. A cap 16 is detachably arranged in the cylinder body 4 so as to cover the other end part opening of the cylinder body 4. One end of a piston rod 12 is joined to the piston 10, and the other end is derived to an external part of the cylinder body 4 by penetrating through the cap 16. A locking belt 22 is detachably arranged in the cylinder body 4 so as to surround the outer periphery of the cylinder body a little under the cap 16 of the cylinder body. A hook 28b on one end of an engaging bar 28 engages with a through-hole 26 of the cap 16, and a hook 28c on the other end engages with the lower end of the locking belt 22, and the cap 16 is joined to the locking belt 22. COPYRIGHT: (C)2008,JPO&INPIT
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