Patent ID: 7973256

Claim:
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 at a first end thereof, and having a lever head formed at a second end spaced from the fulcrum and projecting upward from the casing; a movable contact having an arm, a holder disposed at a first end of the arm and secured at a bottom surface of the lever head, and a contact-part formed at a second end of the arm and brought into resilient contact with the internal bottom surface of the casing or the fixed contact; and a spring member having a first part brought into resilient contact with the internal bottom surface of the casing and an arch-part brought into resilient contact with a bottom surface of the lever, wherein the first part is nearer the lever head than the arch-part and the arch-part is nearer the fulcrum than the first part.