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US 5,142,113 AGranted
Switch
AssigneeMitsuku Denshi Kogyo Kabushiki Kaisha
InventorMuneyoshi Miyata
Life of this patent
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Abstract
A switch capable of significantly reducing the number of parts therefor and permitting the manufacturing and assembling to be carried out with high efficiency. Only four parts consisting of a casing, a top plate or a bottom plate, a cam lever and a leaf spring each simplified in structure are required to construct the switch. The cam lever causes pressing force acting in a small magnitude on its lever section to be changed to pressing force of an increased magnitude acting on its cam section in a lever-like manner about a support shaft.
Claims4
A switch comprising a housing;
- a cam lever positioned within said housing and including a support shaft, a lever section and a cam section, said lever section and said cam section being connected to each other through said support shaft at a predetermined angle and pivotally moved within said housing about said support shaft;
- a pair of fixed contacts positioned within said housing;
- and
- a leaf spring contacted at one end thereof with one of said fixed contacts and inflectedly supported at said one end in a lever-like manner about a fulcrum comprising a projecting contact section of said one fixed contact;
- said leaf spring being resiliently forcedly contacted at the other end thereof with both a lower surface of said cam section and a lower surface of said support shaft and the other of said fixed contacts being positioned within said housing such that it contacts the other end of said leaf spring when said leaf spring is forced into contact by said cam lever.
2 more elements
Dependencies are inferred from the claim text.