Closure fasteners – Bolts – Sliding
Patent
1987-08-06
1989-05-23
Moore, Richard E.
Closure fasteners
Bolts
Sliding
292347, 292DIG27, E05C 2100
Patent
active
048323853
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to the field of locks.
The U.S. Pat No. 3,967,846 makes known a door lock, in which there is an annular electromagnet, of which the coil is stationary and the magnet, guided in the latter, acts on a locking finger of the spindle of the lock.
The present invention relates to a lock of a completely different type and is concerned with a lock with electrically controlled setting by means of an electromagnet.
According to the present invention, this lock with electrically controlled setting by means of an electromagnet comprises:
a first and a second coaxial component which are mounted rotatably in a lock body and of which one is connected to at least one bolt or any other locking means in order to move it and the other to a handle or any other actuating means;
at least one electromagnet comprising a magnet and a coil coupled magnetically, at least one of the elements of this electromagnet being rotatably mounted coaxially relative to the said components, in order to be driven in rotation from a first angular end position to a second angular end position when the coil receives an electrical pulse;
at least one connecting element mounted on the said first component and designed to be shifted between a first and a second end position, this connecting element, in its second position, being engaged with the second component, in order to connect the said first and second components in terms of rotation at least in one direction, whilst, in its first position, the said components are free to rotate relative to one another;
at least one cam and one cam follower, of which one is carried by the movable element of the said electromagnet and the other by the said connecting element, this cam and this cam follower being designed to interact so as to shift the said connecting element in one direction from one of its end positions to the other, when the movable element of the electromagnet changes from its first angular position to its second angular position, and at least one restoring means designed to stress the said connecting element in its other shifting direction;
in such a way that, with the said components being in corresponding angular positions and being connected in terms of rotation by means of the said connecting element, the movement of the bolt connected to one of the said components is obtained as a result of the actuation of the other component which is connected to the handle.
Preferably, according to the present invention, the said magnet is stationary and the said coil is pivotably mounted coaxially relative to the said components.
According to the present invention, the said magnet and the said coil are preferably in the form of ring segments.
According to the present invention, the said cam and the said cam follower can advantageously be designed to interact so as to shift the said connecting element from its first position to its second position, the said restoring means being a spring.
In a preferred practical alternative form, the said connecting element is formed by an arm articulated on the said first component eccentrically and radially movably, in such a way that its free end can be brought into engagement with the said second component, the said cam and the said cam follower being designed to stress the said arm radially.
Preferably, according to the present invention, elastic means stress at least one of the said components towards a position of rest, in which the said connecting element can be brought into engagement with the other component when the latter is in at least one corresponding position of rest.
In a preferred alternative embodiment, the said lock body comprises a radial plate, from which an axial sleeve projects, this radial plate carrying the stationary element of the electromagnet laterally on the same side as the said sleeve, a support, mounted rotatably on the said sleeve, carrying the movable element of the electromagnet, the said first component comprising a radial plate mounted rotatably in the said lock body and carrying an arm articulated e
REFERENCES:
patent: 3967846 (1976-07-01), Schloge
patent: 4073527 (1978-02-01), Schloge
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