| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that since a switch board is held by each board installation part, and point-supported in each board installation part even when there are several board installation parts, the switch board is bent due to a depression force from a push button in a section which is not held by the board installation part. SOLUTION: A rib 3 is formed in a lower case 2 so that an upper face 3a of the rib 3 can be continuously brought into contact with the lower face of a switch board 4, and a reinforcing part 31 extended perpendicularly to a longitudinal direction is formed in the rib 3 so as to be positioned at the lower part of each switch 41. COPYRIGHT: (C)2009,JPO&INPIT
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