| 摘要 |
PROBLEM TO BE SOLVED: To apply dust-proof measures against opening and closing switch mechanism of a locker switch, and also substantially miniaturize the total dimension of a housing. SOLUTION: The device has: a partioning plate with the center opening to partition inside of the housing into a first chamber on the opening end side and a second chamber on the bottom side; a hollow protrusion of which the base is fixed to the lower face side of a switch button; and the dust-proof plate which is placed on the partioning plate so as to surround the surroundings of the hollow protrusion, and which is sled on the partitioning plate while closing a gap between the surrounding of the hollow protrusion and the center opening of the partitioning plate, accompanied with rocking of the hollow protrusion when the switch button is operated. The dust-proof plate is elastically biased against the partitioning plate by an elastic element installed between the lower face of the switch button and the dust-protective plate. COPYRIGHT: (C)2011,JPO&INPIT
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