EP0333588B1 - Automatic safety locking device - Google Patents

Abstract

Lock for securing a rod 3 of an existing lock 2. As a result of the displacement of a finger fastened to the rod, a sliding bolt is compressed and escapes under the action of a spring. Opening is obtained by the transmission of one or more codes from the keypad 12 controlling an electromagnet 4, thus making it possible to release and displace the rod 3. <IMAGE>

Description

The present invention relates to a method making it possible to obtain high security when closing as blue as when opening a multi-point residential door lock provided with a key causing at least one set of rods and one automatic locking and securing lock for the implementation of said method, of the type intended to be added to ordinary locks of multi-point doors with high and / or low rods, in order to ensure the automatic blocking of at least one of these rods in the closed position by the single operation of the key in said lock.

Locks of this kind are known in which the rod can be blocked or unlocked by a mechanism controlled by an electric motor, for example when an electric contactor is closed.

In these rod locks, the actuating motor which rotates an arm or a cam is capable of occupying two stable angular positions: in one the rod is free to be moved, in the other, it is immobilized by the locking bolt.
Such blocking can be ensured for example by the end of a lever biased by an eccentric element driven by an electric motor against a bearing surface of the sliding bolt acting jointly with a light formed in the rod, as described in French patent No 2,535,775 of November 10, 1982.

Also known in the prior art is the European patent application filed on 22.10.1987 published under No. 0 312 654 in the name of the company DRIN Limited, which relates to a lock provided with mechanical means allowing the closing and opening as well as internal blocking, but devoid of an electric or electromagnetic system unlocking this lock.

The present invention relates to a safety lock which can be associated with any multi-point lock without the intervention of an electric motor controlling the locking or unlocking mechanism of the rod.

As will be seen below, it results from the arrangement recommended by the invention a simplification of the rod locking device, by means of elements reduced in number, not visible on the outside face of the door, and the operation is safe, flexible and reliable.

This object is obtained by a method according to claim 1 and an automatic locking and safety lock according to claim 2.

• La Figure 1 est une vue intérieure d'ensemble d'une porte à un panneau sur laquelle sont montés , d'une part une serrure ordinaire à clé et des tringles basse et haute coulissant verticalement dans des gâches évidées en regard pratiquées respectivement dans le bâti et dans le sol, d'autre part un verrou de blocage de la tringle placé à volonté soit pour condamner la tringle basse comme représenté en traits forts, soit pour commander la tringle haute comme représenté en pointillé.
• La Figure 2 représente une vue agrandie d'un détail de la Figure 1, et la Figure 3 est une vue également agrandie,du mécanisme de verrouillage de la Figure 1.
  Sur ces Figures, les mêmes références désignent les mêmes éléments.
  Sur la Figure 1, la référence 1 désigne la porte.La référence 2,la serrure à clé.Les références 3 et 3′ désignent respectivement les tringles basse et haute. La référence 4 désigne le dispositif électro-mécanique de blocage. Dans la réalisation donnée en exemple il agit sur la tringle basse 3.
  Sur la Figure 2 est représentée partiellement la tringle basse 3 sur laquelle est fixé un doigt cylindrique 5 permettant le verrouillage en position de fermeture de celle-ci.
• La Figure 3 représente en détail le dispositif de blocage du verrou 4 de la tringle 3. Ce verrou comprend un pène 6,biseauté dans cet exemple, qui est constamment sollicité dans la position de fermeture par un ressort 7 et un électro-aimant 8 inclus dans un boîtier 9.
  L'électro-aimant est relié au clavier blindé 11 ou 12 en direct par un conducteur à deux fils ou par un double contact à ressort placé en feuillure de bâti. L'alimentation permanente du clavier 12 est assurée par une batterie de 12 volts pourvue d'un transformateurredresseur 10.

The appended drawing schematically represents an embodiment of the invention in which:

• Figure 1 is an overall interior view of a door to a panel on which are mounted, on the one hand an ordinary key lock and low and high rods sliding vertically in strikes hollowed out facing practiced respectively in the frame and in the ground, on the other hand, a rod locking lock placed at will either to condemn the low rod as shown in strong lines, or to control the high rod as shown in dotted lines.
• Figure 2 shows an enlarged view of a detail of Figure 1, and Figure 3 is an enlarged view of the locking mechanism of Figure 1.
  In these Figures, the same references designate the same elements.
  In Figure 1, the reference 1 designates the door. The reference 2, the key lock. The references 3 and 3 ′ designate the lower and upper rods respectively. Reference 4 designates the electro-mechanical blocking device. In the embodiment given as an example there acts on the bottom rod 3.
  In Figure 2 is partially shown the bottom rod 3 on which is fixed a cylindrical finger 5 for locking in the closed position thereof.
• Figure 3 shows in detail the locking device of the lock 4 of the rod 3. This lock comprises a bolt 6, beveled in this example, which is constantly biased in the closed position by a spring 7 and an electromagnet 8 included in a housing 9.
  The electromagnet is connected to the shielded keyboard 11 or 12 directly by a two-wire conductor or by a double spring contact placed in the frame rebate. The permanent supply of the keyboard 12 is ensured by a 12-volt battery provided with a rectifier transformer 10.

The operation of the locking device is conditioned by the closing movement of the lock.
It is carried out by the displacement A of the rod 3 and of the finger 5, which allows the bolt 6 to escape according to the value B, under the action of the spring 7 compressed initially, according to the position of the bolt 6 by the line dashed and overcompression C caused by the movement of finger 5 on the inclined plane of the bolt 6. The bolt 6 in this new position opposes any translation of the finger 5 and the rod 3.

To obtain the opening of lock 2 from the outside, simply insert the key in it, dial on the keyboard one of the preset codes, comprising from 4 to 8 signs, plus a validation key provided for the electrical supply of the electromagnet 8 for controlling the bolt 6 positioning the latter according to the dotted line and according to the displacement E, which allows the release of the finger 5 and of the rod 3 for the displacement D effected by the rotation opening the key in the lock 2, the interruption of the electrical supply to the electromagnet 8 releases the spring 7 which brings the bolt 6 contact of the finger 5 along the dashed line.

To obtain the opening of the lock 4 from the inside, it suffices to manually move the lever or trigger 14 integral with the bolt according to the value E, which allows the release of the finger 5 and of the rod 3 for the vertical displacement effected with the key to lock 2; the release of this trigger brings the bolt 6 in contact with the finger 5 along the dashed line.

Note that this opening can also be done from the inside by an electrical contact supplying the electromagnet 8.

One of the codes can be carried out on opening "under duress" and will supply two relays: one for opening the lock, the other for a remote visual and / or phonic alarm and / or a telephone transmitter.

Claims (2)

1. Method enabling high security to be obtained both upon the opening and the closing of a multipoint door lock mechanism of a residence, equipped with a key driving at least one set of rods, characterized in that it consists, on the one hand: upon opening from the outside, in associating, always simultaneously and instantaneously, an intangible means constituted by a code controlling a timed pulse with a tangible means constituted by the said key acting on a lock mechanism comprising a finger (5) carried by a rod (3, 3') and an electromechanical assembly (9) including a bevelled latch bolt (6) constantly urged in the latched position by a spring (7), the said latched position resulting from the vertical translation of the rods (3, 3') and of the finger (5) on account of the positioning of the latch bolt above or below the said finger, the unlatched position, permitting the displacement of the rods (3, 3') by the manual rotation of the key, being ensured by an electromagnet (8) translating the latch bolt and energized for this purpose by the tapping-in and the validation of at least one numerical or alphanumeric code tapped in on a burglar-proof keypad placed outside on the door, modifiable as required, acting on a microprocessor managing the determination of several codes; on the other hand, upon closing, in ensuring automatic overlatching following the manual rotation of the key causing the displacement of the rods (3, 3') which are automatically latched by the electromechanical assembly (9) which is invisible from the outside and which then opposes any new displacement of these.
2. Automatic decommissioning and security lock for the implementation of the method according to Claim 1, comprising a lock mechanism (2) actuated by a key, the rotation of which permits the displacement of at least one set of rods (3, 3'), characterized in that it comprises, in combination:

   - at least one finger integral with a rod (3, 3') and an electromechanical assembly (9) including a bevelled latch bolt (6) constantly urged in the latched position of the said rod (3, 3') by a spring (7), the said latched position resulting from the vertical translation of the rod (3, 3') and of the finger (5) on account of the positioning of the latch bolt (6) above or below the said finger;

   - an electromagnet (8) translating the bevelled latch bolt following an electrical pulse permitting the unlatching of the said rod (3, 3');

   - a microprocessor managing the determination of at least one numerical or alphanumeric code tapped in and validated on a burglar-proof keypad placed on the unit outside, each of the validated codes generating an electrical pulse supplying the electromagnet; the automatic overlatching of the lock mechanism (2) always being obtained by the rotation of the key in the lock mechanism driving at least one set of rods (3, 3'), the said rods, in their displacement, then being automatically latched by the electromechanical assembly (9) which is invisible from the outside and which opposes any new displacement of the rods, the opening from the outside always being obtained by the simultaneous and instantaneous association of an intangible means constituted by the numerical or alphanumeric code tapped in and validated on the said keypad and of a tangible means constituted by the said key acting on the lock mechanism (2).

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