| 摘要 |
PROBLEM TO BE SOLVED: To provide an unlocking prevention implement with a simple construction which surely makes unlocking of a pushbutton switch locked in a pushed position impossible only by a foreside operation of an operator. SOLUTION: The unlocking prevention implement 10 includes: a tubular base body 12 which encloses an operating portion 3 of the pushbutton switch 1; and a tubular cover body 11 which covers an operating face and a circumference face of the operating portion 3. The cover body 11 has a first engaging nail 17, the tubular base body 12 has a second engaging nail 19 which engages to the first engaging nail 17, and the first engaging nail 17 and the second engaging nail 19 engage each other to establish the locked state when a position of the pushbutton switch 1 reaches the pushed position. In the pushed position, a front face 11A of the cover body 11 enters in the inside of the tubular base body 12. A clearance between the circumference face of the cover body 11 and an inner circumference face of the tubular base body 12 is so retained that it is too small to be inserted with fingers or a tool like a driver etc. COPYRIGHT: (C)2007,JPO&INPIT
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