US 2001/0018837 A1 · Latch mechanism for electronic locks

Abstract

It is fitted in the inner escutcheon and is able to be adapted to any lock and in left- and right-handed doors. Once the lock has been opened, after a certain length of time it becomes locked again even though the handle has not been turned. It includes two inner (12) and outer (11) square bars in prolongation, connected to individual tumblers (21, 22) and bearing the operating handles. Both tumblers (21, 22) have a relative angular displacement, turning simultaneously, after the release of a displaceable piece (23) or latch, introduced into a groove (214) of the outer tumbler (21), the latch (23) being assisted by a spring (30). The latch (23) is displaceable from the inside by means of rocker arms (24, 25) operated by lugs (224, 225) of the inner tumbler (22), projecting from the groove (214). From the outside, a reducer motor (40) acts on an endless screw (401), which displaces the spring (30) connected to the latch (23) through a certain angle in order to release it.

Claims5

Dependent claims

LATCH MECHANISM FOR ELECTRONIC LOCKS, of the type found housed in the inner escutcheon of the electronic lock, characterized in that it includes two square bars:

inner and outer forming an extension of each other, connected by their ends in contact with their respect inner and outer tumblers, being the carriers at their free ends of the operating handles;
with both tumblers being in contact via their flat surfaces and rotating around a common axis defined by a cylindrical axial extension of one of the square bars, which is then inserted into the other square bar;
provision having been made for the outer tumbler to have an eccentric lug that moves in a cut made in the profile of the inner tumbler and this latter possesses another lug diametrically opposed that moves in a slot of the outer tumbler;
there existing a linearly displaceable piece appropriate for being inserted in a notch or groove in the profile of the outer tumbler, preventing its rotation and being assisted by a spring.

1 more element

Dependencies are inferred from the claim text.

Latch mechanism for electronic locks

Life of this patent

Latch mechanism for electronic locks

Life of this patent

Abstract

Claims5