| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce key impact noise during input operations. <P>SOLUTION: When a key top 51 is displaced to a lowered position, a tilted portion 53d of a resilient member 53 can abut a lower surface 51e of the key top 51, and a gap D1 is formed between the key top 51 and a membrane sheet 55. Thereby, the key top 51 can be prevented from abutting the membrane sheet 55 when the key top 51 is displaced by a user from a raised portion to the lowered portion. Accordingly, the noise of collision between the key top 51 and the membrane sheet 55 is no longer produced, so that the key impact noise of the keyboard 5 can be reduced. <P>COPYRIGHT: (C)2012,JPO&INPIT |
