Locks – Operating mechanism – Using a powered device
Patent
1984-10-24
1987-01-06
Wolfe, Robert L.
Locks
Operating mechanism
Using a powered device
70280, 292142, 292144, E05B 4700
Patent
active
046336885
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATION(S)
This United States application stems from PCT International Application No. PCT/SE84/00109 filed Mar. 27, 1984.
BACKGROUND OF THE INVENTION
The present invention relates to a lock device, intended to facilitate both electrical and manual operation.
When using electrically operable lock mechanisms, as used together with various types of electronic code locks, there is obviously also a need for such lock mechanisms which can be influenced manually, i.e. by means of an associated key or handle. For fire safety reasons, manual operation is a necessary requirement, which prevents use of lock mechanisms being operable electrically only.
For example, with regard to entrance door lock installations of today, a conventional manually operable lock mechanism is arranged located enclosed within the entrance door, arranged to facilitate operation by means of a key from the outside of the door, and having a manually operable handle by the inside surface of the door. When installing an electronic lock device, having an externally located key pad by means of which a certain code sequence can be programmed for operation of the lock mechanism, an electrically operable device is attached to the inside surface of the door adjacent to the handle, mechanically connected to the shaft of said handle, whereby any opening movement of the lock mechanism can be achieved when correct code sequence is programmed. This solution has a number of disadvantages, since the electrically operable device is mounted externally on the inside surface of the door, and thus easily can be made subject to outside forces, with the intention to prevent same from operating. Also from an aesthetical point of view, such an externally mounted device is not desirable. There are also certain risks that the lock handle is jammed by means of fire or other outside forces, thus preventing or slowing down an emergency exit.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a lock device which meets existing requirements relating to safety in case of fire, and also provides safety against outside influences, thus completely overcoming the disadvantages related to previously utilized devices. The lock device according to the present invention is also mounted rapidly and easily, and facilitates simple and fast service, if service is required. An important feature is that the lock device is completely enclosed between the outside and inside surfaces of the door, and that it facilitates mounting within the space existing for mounting a conventional and key operated lock mechanism.
The lock mechanism according to the present invention includes an electrically operable lock unit, including one or more electrically operable lock bolts, having positions of extensions in relation to the unit which can be changed by electrical influence, and the lock unit is arranged displacably in relation to a surrounding lock casing, which lock casing also includes a conventional manually operable lock mechanism, the electrically operable lock unit being arranged to take up a first position when the manually operable lock mechanism is uninfluenced, in which an electrically operable lock bolt or bolts can respectively engage and respectively disengage, an associated striking plate, influence on the manually operable lock mechanism being arranged to displace the electrically operable lock unit into a second position within the surrounding lock casing, located at a greater distance from the striking plate, thereby moving the lock bolt(s) of the lock unit from a position of engagement with the striking plate.
BRIEF DESCRIPTION OF THE DRAWINGS
An example of an embodiment of a lock device according to the present invention is more fully described below with reference to the accompanying drawings, in which:
FIG. 1 is an exploded perspective view of a lock device according to the present invention, intended to illustrate an embodiment within the scope of the invention.
FIG. 2 is a cross-sectional view of a part of the emb
REFERENCES:
patent: 608321 (1898-08-01), Carleton
patent: 1968285 (1934-07-01), Egan
patent: 3266278 (1966-08-01), Ennitt
patent: 3505838 (1970-04-01), Taylor
patent: 3767240 (1973-10-01), Belanger
patent: 3947060 (1976-03-01), Zimmer et al.
Beudat Emile
Tersaeus Stig G.
Beudat Emile
Gall Lloyd A.
Wolfe Robert L.
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