| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve the improvement in key depression load characteristics and miniaturization of a key switch including three or more make contacts while maintaining stable switching operation. <P>SOLUTION: A switch body SW includes a domical swollen portion 12 which is elastically swollen upward and is connected to a base portion 11 via a skirt portion SKa. The domical swollen portion 12 has a skirt portion SKb, a lower edge 13, and a portion 14 to be driven. Downward swollen portions 15 and 16 are formed in the domical swollen portion 12 and under the portion 14 to be driven, and movable contacts swB and swC are provided below the swollen portions 15 and 16. The lower edge of the domical swollen portion 12 is formed like a ring long in an arrangement direction of the movable contacts swB and swC when viewed from the rear side. The lower edge 13 has recessed notch portion 13a formed in such a lower part that they are not in contact with a substrate 10, and movable contacts swA1 and swA2 are provided at lower ends of two parts divided by the notch portions 13a. <P>COPYRIGHT: (C)2012,JPO&INPIT |
