发明名称 |
Navigation switch device |
摘要 |
A navigation switch apparatus with simple construction is capable of operating in eight directions including longitudinal, lateral and diagonal directions. The apparatus has a printed circuit board having four conductors provided thereon with small spaces between each conductor. Together the conductors are shaped like a doughnut. A cap-shaped body arranged opposite the printed circuit board is provided with short-circuiters for making contact with the respective four conductors when a navigation lever is operated in the eight directions. Each conductor includes two opposing comb-shaped conductive layers. The central portion of one conductive layer has a diametrically directed comparatively-coarse comb shape. Both of the end portions of the other conductive layer have a circumferentially directed comparatively-fine comb shape, and the cap-shaped body has a thin-walled portion on its outer periphery. Thick-walled portions extending in the eight directions, and together forming a substantially regular octagon are formed in the vicinity of the thin-walled portion.
|
申请公布号 |
US6958454(B2) |
申请公布日期 |
2005.10.25 |
申请号 |
US20040504834 |
申请日期 |
2004.08.17 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SEKINE TAKESHI;KUME SHINGO;TABATA TAICHI;OOHIRA AKINORI |
分类号 |
H01H25/00;H01H1/06;H01H9/16;H01H13/702;H01H25/04;H01H25/06;(IPC1-7):H01H25/04;H01H9/00 |
主分类号 |
H01H25/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|