Switch body
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsKojiro Yano, Kenichi Matsumoto, Ryo Nakae, Masanori Mitsuoka
Life of this patent
Estimating the term…
Abstract
The switch body includes: a wiring substrate where first to fourth fixed contact members are formed; and a movable contact member including a pressure receiving part opposite from the second fixed contact member, a first outer edge facing the first fixed contact member, and a second outer edge facing the third fixed contact member. The fourth fixed contact member is formed in a region outside a projection region being a projection of the movable contact member on the wiring substrate and is in a position facing the first outer edge when the second outer edge is moved to a region where the second fixed contact member is formed.
Claims10
A switch body comprising:
- a base including a first fixed electrode, a second fixed electrode placed next to the first fixed electrode to be electrically independent from the first fixed electrode, a third fixed electrode placed next to the second fixed electrode and on an opposite side of the second fixed electrode from the first fixed electrode, and a fourth fixed electrode placed next to the first fixed electrode and on an opposite side of the first fixed electrode from the second fixed electrode;
- and
- a movable electrode including a pressure receiving part opposite from the second fixed electrode of the base, a first outer edge facing the first fixed electrode, and a second outer edge facing the third fixed electrode, and the movable electrode being designed to allow movement of an opposite surface from the pressure receiving part toward the second fixed electrode when the pressure receiving part is pressed toward the base and then deformed
- a spacer holding the movable electrode with position thereof limited on the base,
- the fourth fixed electrode being formed in a region outside a projection region, wherein the projection region being a projection of the movable electrode on the base and the fourth fixed electrode is placed so that a distance between inner edges of the second fixed electrode and the fourth fixed electrode is shorter than a distance between the first outer edge and the second outer edge and a distance between outer edges of the second fixed electrode and the fourth fixed electrode is longer than the distance between the first outer edge and the second outer edge,
- the spacer including a flat region, the spacer being placed over the base to cover all of the fourth fixed electrode with the flat region.
Dependencies are inferred from the claim text.