| 摘要 |
PROBLEM TO BE SOLVED: To provide a key switch device in which difference of switch characteristics, occurring between the central part and the end part of a key top, can be reduced, and with which even a small key can be coped.SOLUTION: The key switch device comprises: a key top 4; a base plate; a pantograph 7 disposed between the key top and base plate; and a rubber dome switch 8 for energizing the key top upward. The pantograph comprises: an upper inside shaft member 11 and an upper outside shaft member 12; a lower inside shaft member 13 and a lower outside shaft member 14; a pair of inside link members 15; a pair of outside link members 16; and a pair of coupling pins 17 disposed contiguously to each other and inserted into an inside through hole and an outside through hole. The pantograph is installed while positioning the coupling pin on one end side of the key top, and the rubber dome switch 8 is installed on the other end side of the key top contiguously to the pantograph. |
