| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet switch that has a tact spring as a movable contact which can be readily and correctly fixed on a fixed contact disposed on a substrate and is capable of maintaining a click tactile feel during a key entry operation. SOLUTION: The sheet switch 21 comprises: a substrate 24; a tact spring 25 disposed on the substrate 24; a protection sheet 26 for coating the tact spring 25 on the substrate 24; and an adhesive layer 28 provided on the back side of the protection sheet 26, wherein the adhesive layer 28 is provided with a ring-shaped notch portion 31 extending along at least the outer periphery of the tact spring 25, and the tact spring 25 is fixed to the substrate 24 by an adhesive surface excluding the notch portion 31. COPYRIGHT: (C)2010,JPO&INPIT
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