SWITCH

• US 20130087443A1
• Filed: 10/03/2012
• Published: 04/11/2013
• Est. Priority Date: 10/05/2011
• Status: Abandoned Application

• Current Assignee: Mitsumi Electric Co., Ltd. (MinebeaMitsumi Inc.)
• Original Assignee: Mitsumi Electric Co., Ltd. (MinebeaMitsumi Inc.)
• Inventors: Kikuchi, Hidetake
• Application Number:
  US13/644,123
• Publication Number:
  US 20130087443A1
• Time in Patent Office: Days
• US Class Current: 200/520
• CPC Class Codes: H01H 13/48 using buckling of disc springs
• CPC Class Codes: H01H 2209/012 avoiding too large deformation or stress
• CPC Class Codes: H01H 2215/012 Positioning of individual dome
• CPC Class Codes: H01H 2217/024 Profile on actuator
• CPC Class Codes: H01H 2221/05 Force concentrator; Actuating dimple
• CPC Class Codes: H01H 2221/076 Protruding in cavity covered by membrane

Abstract

A switch includes a case including a recess, a plurality of fixed electrodes provided in the recess, a movable electrode provided in the recess, a pressing member and a buffer member. The case is mounted on a circuit board. The movable electrode is displaced between a first position where the plurality of fixed electrodes are electrically connected each other and a second position where the plurality of fixed electrodes are not electrically connected each other. The pressing member covers at least a portion of the recess, and displaces the movable electrode from the second position to the first position by a pressing force applied from outside. The buffer member is interposed between the movable electrode and the pressing member, and is elastically deformed by the pressing force.

Claims

1. A switch comprising:

a case, mounted on a circuit board, and including a recess;

a plurality of fixed electrodes provided in the recess;

a movable electrode, provided in the recess, and configured to be displaced between a first position where the plurality of fixed electrodes are electrically connected each other and a second position where the plurality of fixed electrodes are not electrically connected each other;

a pressing member, covering at least a portion of the recess, and configured to displace the movable electrode from the second position to the first position by a pressing force applied from outside; and

a buffer member, interposed between the movable electrode and the pressing member, and configured to be elastically deformed by the pressing force.

2. The switch according to claim 1, wherein

the buffer member is made from a material containing one of silicon rubber, fluorine-based rubber, and a UV resin.

3. The switch according to claim 1, wherein

the pressing member includes a first portion covering whole of the movable electrode and a second portion projecting from the first portion along a direction in which the movable electrode is displaced;

and

the first portion and the second portion are integrated.

4. The switch according to claim 1, wherein

the buffer member includes a first portion covering whole of the movable electrode and a second portion projecting from the first portion along a direction in which the movable electrode is displaced.

5. The switch according to claim 1, wherein

the pressing member has rigidity higher than rigidity of the buffer member.

6. The switch according to claim 1, wherein

the pressing member is made from a material containing one of polyimide, a PEEK resin, and a fluorine-based resin.

7. The switch according to claim 1, wherein

the movable electrode has resiliency.