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Buckling spring torsional snap actuator

  • US 4,118,611 A
  • Filed: 08/30/1977
  • Issued: 10/03/1978
  • Est. Priority Date: 08/30/1977
  • Status: Expired due to Term
First Claim
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1. In an electrical key actuating mechanism having a key top, a housing having means for slidably receiving said key top for vertical motion thereof, a pivoting rocker type electrical actuating means in said housing opposite said key top, electrical means for actuation by said electrical actuating means, and also having a buckling compression spring means under precompression and mounted between said key top and said pivoting rocker type electrical actuating means, the improvements comprising:

  • lateral deflection offset spring mounting means within said housing bearing against said buckling compression spring and displacing the central portion thereof relative to its ends in a first chosen direction for promoting buckling of said buckling compression spring in said first chosen direction;

    mounting means on said key top for pivotally mounting the proximal end of said buckling compression spring; and

    mounting means on said rocker for mounting the distal end of said buckling compression spring with an edge of said spring colinear with said pivot of said rocker.

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