| 摘要 |
PROBLEM TO BE SOLVED: To enhance airtightness of a switch section by applying a spacer upon a circuit board and to enable maintenance work of the switch section by easily detaching from the circuit board a cover film bonding a click spring and the spacer. SOLUTION: The switch is formed of a fixed contact 3 arranged on the upper surface of a circuit board 2, a movable contact member composed of a semisphere metal click spring 5 connected and disconnected with the fixed contact 3 and of a spacer 6 by bonding an insulating cover film 7 on its upper surface and arranged on the circuit board 2. A layer of weak adhesive 12 detachable from the printed circuit board 2 is formed beneath the spacer 6 allowing the spacer 6 to be placed freely detachable on the circuit board 2.
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