Key input device and electronic apparatus |
|||||||
| 申请号 | JP29042389 | 申请日 | 1989-11-08 | 公开(公告)号 | JPH03152815A | 公开(公告)日 | 1991-06-28 |
| 申请人 | Hitachi Ltd; | 发明人 | KITAHARA JUN; KITATSUME YOSHIAKI; ITO HIROMICHI; TSUNEHIRO TAKASHI; | ||||
| 摘要 | PURPOSE: To dispense with a space for holding a key top switch and miniaturize a key input device by boring a hole in the upper surface of a receiving body for receiving a printed board, catching a key top into this hole to project its upper part from the hole, and energizing the key top in the projecting direction by an elastic member provided on the printed board. CONSTITUTION: A printed board 2 having a plurality of electronic parts 3 for input operation to a body not shown on the lower surface and a plurality of printed electrodes 6 on the upper surface is received in a receiving body 1. A hole 18 slightly larger than the diameter of a key top 4 to be inserted thereto is bored in one wall of the receiving body 1. At the beginning of assembling, the key top 4 having a wide engaging part 15 on the lower surface is inserted into the hole from the lower surface, and the upper surface of the key top 4 is projected while preventing the pass through of the key top 4 by the engaging part 15. Thereafter, the center part lower surface of a contact electrode 7 for the electrode 6 provided on the lower surface of the engaging part 16 is pushed up by a leaf spring 5 mounted on the board 2 to ordinarily bring the electrodes 6, 7 into cut state. COPYRIGHT: (C)1991,JPO&Japio |
||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
QQ群二维码
意见反馈
意见反馈