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US 2009/0014307 A1Published application
Switch
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKenji Nishimura, Kenji Yasufuku, Yasuchika Kudo
Life of this patent
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Abstract
A spring member is provided in a switch having a lever to receive a pushing force from outside, by bringing an arch-part formed at the left end of the spring member into resilient contact with the bottom surface of the lever, in addition to the movable contact, the spring member also can return the lever. In the case of developing a compact and low-profile switch, the returning force of the lever can be increased to perform electrical connection or disconnection reliably.
Claims3
A switch comprising:
- a substantially box shaped casing where a fixed contact is implanted on an internal bottom surface;
- a lever housed pivotally in the casing with a supporting point as a fulcrum of its one end, and a lever head formed at an another end and projecting upward from the casing;
- a movable contact whose one end of an arm is secured at a bottom surface of the lever head and whose contact-part formed at an another end of the arm is brought into resilient contact with the internal bottom surface of the casing or the fixed contact;
- and
- a spring member whose one end is brought into resilient contact with a bottom surface of the lever.
2 more elements
Dependencies are inferred from the claim text.