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US 7,067,751 B2Granted
Switch
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKenji Nishimura, Tamotsu Yamamoto, Tatsuya Tsuda
Life of this patent
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Abstract
A switch including an insulative plastic case having a cavity formed therein, a metal cover joined to the case to cover over the cavity, and a switching contact section contained in the cavity. In this switch, a surface of the cover opposed to the case has an insulative film formed on at least a region of the surface facing to the cavity. The switch can prevent externally-originated static electricity from adversely affecting the switching contact section to protect a circuit section of a device connected to the switching contact section.
Claims12
A switch comprising:
- an insulative plastic case having a cavity formed therein;
- a switching contact section contained in said cavity;
- and
- a cover joined to said case to cover said cavity said cover including:
- a base member formed of a thin metal plate, said base member having a top surface and at least one leg portion which extends downward from the top surface;
- and
- an insulative film integrally formed on at least a surface of said base member that is opposed to said cavity and on a surface of said leg portion opposed to said case,
- wherein said insulative film has a thickness ranging from 3 μm to 20 μm.
5 more elements
Dependencies are inferred from the claim text.