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US 6,492,602 B2Granted
Two-position pushbutton switch
AssigneeAlps Electric Co., Ltd.
InventorsAkira Asai, Shigenori Sato, Katsuichi Oba, Sachiko Homma
Life of this patent
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Abstract
In a two-position pushbutton switch, a cushioning member is placed on at least one of first and second click springs, and the click spring is pressed via the cushioning member, thereby making a first press stroke long. A guide member is provided to guide the motion of a driving member. The driving member is slid along the guide member in the pressing direction of a key top.
Claims18
A two-position pushbutton switch comprising:
- a first click spring to be inverted by a first working force;
- a first switch section to be operated by inversion of said first click spring;
- a driving member having a flat portion that opposes and presses said first click spring;
- a second switch section laid on a surface of the flat portion of said driving member;
- a second click spring to be inverted by a second working force, different from the first working force, so as to operate said second switch section;
- and
- a key top for pressing said second click spring,
- wherein a cushioning member is placed on at least one of said first and second click springs and said at least one of said first and said second click spring is pressed via said cushioning member, and
- wherein a surface area of the flat portion of the driving member is at least as large as a surface area of the first and second click springs.
6 more elements
A two-position pushbutton switch comprising:
- a first click spring to be inverted by a first working force;
- a first switch section to be operated by the inversion of said first click spring;
- a driving member having a flat portion that opposes and presses said first click spring;
- a second switch section placed on a surface of the flat portion of said driving member;
- a second click spring to be inverted by a second working force, different from the first working force, so as to operate said second switch section;
- a key top for pressing said second click spring;
- and
- a guide member for guiding a motion of said driving member,
- wherein said driving member is slid along said guide member in a pressing direction of said key top,
- wherein a surface area of the flat portion of the driving member is at least as large as a surface area of the first and second click springs.
7 more elements
Dependencies are inferred from the claim text.