| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet switching module, having improved clicking sensation and switching reliability, and which is can be effectively improved of light guide efficiency, by accurately arranging and fixing depression assisting members for depressing the key switches onto the depression centers of key switches. SOLUTION: In the sheet switch module 20 includes: the substrate 22; the key switches 28 each consisting a fixed contact 23 formed on the substrate 22 and a doom-shaped movable contact 24 arranged on the fixed contact 23; a fixing sheet 25 which applies the key switches 28 onto the substrate 22; and a depression sheet 31 arranged on the key switches 28, the fixing sheet 25 has protruded portions 32 near the top portions 28a of the movable contacts 24 for closely contacting the reverse side of the depression sheet 31 and a space portion 37 is provided inside each of the protruded portions 32, where the depression assisting member 33 is arranged for contacting the top portion 28a of the movable contact 24. COPYRIGHT: (C)2010,JPO&INPIT |
