Patent ID: 8362383

Claim:
A multi-position switch comprising: a base and a cover, the base and the cover defining a receiving chamber, the receiving chamber comprising a lateral surface, the cover defining a through hole, the cover comprising a bottom surface and a plurality of ratchet teeth protruding from the bottom surface and arranged around the through hole, each of the plurality of ratchet teeth comprising a first sloping end; a plurality of positive contacts and a negative contact arranged on the lateral surface; a button comprising a button body, the button body comprising a side surface and a plurality of protrusions protruding from the side surface, the button body passing through the through hole and being external to the cover, each of the plurality of protrusions locating between two neighboring ones of the plurality of ratchet teeth and comprising a second sloping end; a conductive member arranged under the button body and comprising a conductive rod, the conductive rod comprising two ends configured for respectively contacting one of the positive contacts and the negative contact; and an elastic member arranged in the receiving chamber and configured to apply a spring push force to the conductive member in a first position where two ends of the conductive rod abut and rest on two of the plurality of protrusions and abut against two of the plurality of ratchet teeth; wherein when the button is pushed, the two of the plurality of protrusions move and urge the conductive rod to move, after the conductive rod moves to a second position, two ends of the conductive rod move along the second sloping ends of the two of the plurality of protrusions until reaching another two of the plurality of ratchet teeth.