EP1203860A1 - Automatic security lock - Google Patents

Abstract

When the door is closed a contact finger (13) allows an operating plate (14) to fall under the action of a blade spring (24). The movement of the plate closes the principal dead latch (4) by the action of a pin and slot (22,23) and also closes the auxiliary latches (8,9) through operating rods (26,29) and an inverting mechanism (30). The door is opened either by a key or motor (40) which raises the operating plate and recharges the spring.

Description

The present invention relates generally to a security lock automatic to lock a door.

An automatic lock is for example described in the patent US 5,083,448. It includes a deadbolt and a control plate which is mounted in the lock so as to be able to undergo a movement of translation in a direction perpendicular to the direction of movement of the deadbolt. The deadbolt includes a nipple which is guided in a oblique mortise of the control plate, so that a sliding vertical of the control plate be converted into a horizontal slide deadbolt between a locking position and a withdrawn position. A locking spring is supported on the control plate and the bolt frame to push the control plate to an extreme position lower and push the deadbolt into its locked position. A electric motor allows the control plate to be reassembled in a extreme upper position, thereby bringing the deadbolt to its position withdrawn. In this extreme upper position, the control plate is locked by a pusher, which projects from the lock in the open position of the door and is pushed into the lock in the closed position of the door. When the push button is pressed into the lock in the closed position of the door, it releases the control plate and the locking spring pushes the control plate in its lower extreme position and the deadbolt in its position lock.

However, for security reasons, a burglar-resistant door must have multiple locking points. If such a burglar-resistant door is therefore equipped with an automatic lock of the type described in the patent US 5,083,448, it must also be equipped with auxiliary locks, which are the more often with manual locking using a key, or with electric locking, slaved to the main automatic lock.

Document EP 0668425 discloses an assembly of locks which allows the automatic locking in three points of a door element. This lock assembly includes a main lock and two locks auxiliary, all three arranged along the vertical edge of the door. The main lock includes a deadbolt connected to a control bar. The deadbolt includes a nipple which is guided in a mortise oblique of the control bar, so that a vertical sliding of the control bar is converted into a horizontal sliding of the bolt dormant between a locked position and a withdrawn position. A spring of lock presses on the control bar to push it into a extreme lower position, in which the deadbolt is in its position lock. A door handle allows the control plate to be reassembled in an extreme upper position, thus bringing the deadbolt in its withdrawn position and compressing the locking spring. A device is capable of locking the control bar to ensure that the the deadbolt remains behind, the interlocking spring being compressed. The latching device is triggered by a position detector during the door closing. The released control bar then takes out the bolt dormant under the action of the interlocking spring. The command bar is also connected to two rods. These last operate the two locks Auxiliary. The deadbolts of these auxiliary locks engage, while like the deadbolt of the main lock, in the vertical part of the jamb.

An unlocking system assisted by a door with multiple deadbolts is described in document FR 2725470. Locking and unlocking are done using a key, unlocking being facilitated by the use of counterweight.

One of the aims of the present invention is to propose a security lock automatic simple construction, which allows reliable locking of a door, without the need for auxiliary locks. This goal is achieved by lock according to claim 1.

un pêne dormant principal pouvant s'engager dans une mortaise d'un élément adjacent en position fermée de la porte, pour définir une position de verrouillage;

des moyens de contrôle apte à détecter la position fermée de la porte; et

des moyens de commande du pêne dormant principal asservis aux moyens de contrôle et connectés au pêne dormant principal de façon à pouvoir amener ce dernier automatiquement dans sa position de verrouillage lorsque lesdits moyens de contrôle détectent ladite position fermée de la porte.

An automatic security lock according to the invention includes, like the known automatic locks:

a main deadbolt which can engage in a mortise of an adjacent element in the closed position of the door, to define a locking position;

control means capable of detecting the closed position of the door; and

main deadbolt control means slaved to the control means and connected to the main deadbolt so as to be able to bring the latter automatically into its locked position when said control means detect said closed position of the door.

A lock according to the present invention further comprises a first locking rod and a second locking rod. Each of these two locking rods are mounted so that they can slide in one direction perpendicular to the locking direction of the main deadbolt, and each of these two locking rods has a free end designed as auxiliary deadbolt that can engage, in the closed position of the door, directly in a mortise of an adjacent element. Control means of the main deadbolt are connected to the first locking rod, so that it can automatically bring the latter into position locking in its mortise by a translation in a first direction, when the control means detect the closed position of the door. An inverter movement is connected between the first locking rod and the second locking rod, so as to bring the latter automatically in the locking position in its mortise by a translation in a opposite direction to said first sense. Thanks to the present invention, it is possible then obtain, using a single automatic lock of simple construction and robust, automatic and reliable locking at the three free edges of a door leaf.

According to an advantageous embodiment of the invention, the means of the main deadbolt include a return spring able to bring said main deadbolt into its locked position. The control means then comprise a blocking means capable of directly or indirectly lock the main deadbolt in position opening, if they detect an open position of the door, and capable of unlocking the main deadbolt, if they detect a closed position of the door. He will be appreciated that this simple and reliable construction security lock allows automatic locking at several points, without requiring energy external. The energy required for automatic locking of the lock in closed position of the door is stored in the return spring when opening the lock using a key or an electric motor. This energy is restored for automatic locking of the lock when the door closed position is detected.

In a simple and reliable execution, the control means include a control panel which is mounted in the lock so as to ability to undergo translational movement in a plane parallel to direction movement of the main deadbolt, preferably in one direction substantially perpendicular to the direction of travel of the deadbolt main. This control part cooperates, on the one hand, with the deadbolt main and, on the other hand, with the locking linkage, to drive simultaneously the main deadbolt and the locking linkage in their respective locking positions.

Fig.1:

est une vue en élévation, avec brisures partielles, d'une porte équipée d'une serrure avec pêne dormant principal et tringles de verrouillage ; la porte étant montrée dans une position fermée et le pêne dormant principal et les tringles de verrouillage étant montrés dans une position de verrouillage ;

Fig.2:

est une vue en élévation analogue à la Fig. 1, dans laquelle, le pêne dormant principal et les tringles de verrouillage sont montrés dans une position d'ouverture ;

Fig.3:

est une vue en élévation analogue aux Fig. 1 et 2, dans laquelle le pêne dormant principal et les tringles de verrouillage, ainsi qu'un pêne lançant sont montrés dans leur position d'ouverture ; la porte étant montrée partiellement fermée, c'est-à-dire que le pêne lançant est sorti de sa mortaise tout en s'appuyant encore sur le bord de cette dernière ; et

Fig.4:

est une vue en élévation analogue aux Fig. 1 à 3, dans laquelle la porte est montrée dans une position ouverte avec le pêne dormant principal et les tringles dans leur position d'ouverture ; les pênes lançants étant montrés dans une position saillante.

Other details and particularities of the invention will emerge from the description given below, by way of nonlimiting example, of a preferred embodiment of the invention. The reference figures refer to the appended drawings, in which:

Fig.1:

is an elevational view, partially broken, of a door equipped with a lock with main deadbolt and locking rods; the door being shown in a closed position and the main deadbolt and the locking rods being shown in a locked position;

Fig.2:

is a view in elevation similar to FIG. 1, in which the main deadbolt and the locking rods are shown in an open position;

Fig.3:

is an elevational view similar to FIGS. 1 and 2, in which the main deadbolt and the locking rods, as well as a throwing bolt are shown in their open position; the door being shown partially closed, that is to say that the throwing bolt has come out of its mortise while still resting on the edge of the latter; and

Fig.4:

is an elevational view similar to FIGS. 1 to 3, in which the door is shown in an open position with the main deadbolt and the rods in their open position; the throwing bolts being shown in a projecting position.

In the above-mentioned Figures, the same references designate identical or similar elements.

Fig. 1 to 4 show a security lock 1 according to the invention, which is embedded in a door leaf 2 mounted in a frame 3. This lock 1 includes a main deadbolt 4 and a linkage locking 5 cooperating with this main deadbolt 4. In the position of locking the main deadbolt 4, as shown in FIG. 1, this one is engaged in a mortise 7 made in the frame 3. The linkage 5 has free ends, which form auxiliary deadbolts 8, 9 protruding from the edge of door leaf 2 and penetrating into mortises corresponding 10, 11, which are provided above and below the sheet door lock 2. Thus, a lock with three locking points is obtained. He will be appreciated that the locking linkage 5 cooperates directly or indirectly with the main deadbolt 4 so as to automatically occupy a locking position when this main deadbolt 4 is brought into its locked position.

Control means are provided for bringing the deadbolt main 4 in an open position and a locked position. These control means advantageously comprise a control plate 14 cooperating, on the one hand, with the main deadbolt 4 and, on the other part, with the locking linkage 5. This control plate 14 is guided on fixed pins 15 and 16. These are mounted on a plate support 17 and housed in mortises 18 and 19 made in the plate 14. These mortises 18 and 19 are parallel to each other and extend perpendicularly to the direction of travel of the main deadbolt 4, which is indicated by arrow 20. In this way, the plate 14 can be subjected to a back and forth movement in the direction of arrow 21.

The main deadbolt 4 has, on its end opposite to that intended to engage in the mortise 7, a nipple 22 guided in a mortise oblique 23 of the control plate 14. The inclination direction of this mortise 23 relative to the direction of travel 20 of the deadbolt main 4 is such that, if the plate 14 is subjected to a displacement towards the high by an actuating means, such as a key or an electric motor 40, the main deadbolt 4 is withdrawn in its open position.

It will be noted that a return means, for example a leaf spring 24, is associated with the main deadbolt 4 so as to bring the latter automatically and without external energy in its locked position when the door leaf 2 is in its closed position. During this recall movement, the main deadbolt 4 drives the plate 14 downwards, which causes the linkage 5 in its locked position.

The lock 1 further comprises control means making it possible to detect the position of the lock 1 relative to the frame 3 in which the door leaf 2 is mounted, or in other words, the open position or for closing door 2. In an advantageous embodiment, such as shown in the Figures, these control means include a pusher 13, which projects from the lock in the open position of the door and is pressed in the lock in the closed position of the door. When the pusher 13 protrudes from the lock, it blocks the control plate 14 in the high position. When the pusher 13 is pressed, it unlocks the control plate 14 and allows the spring 24 to bring the main deadbolt 4 into its position locking while driving, thanks to the stud 22, the control part 14 towards its lower position, as described above. In other words, the pusher 13 cooperates with the main deadbolt control means 4 of so that the main deadbolt 4 is brought automatically, under the effect of the return spring 24, in its locked position as soon as the door closed position is detected.

The locking linkage 5 comprises a first locking rod 26 articulated on a stud 27 of the control part 14 via a fixing flange 28. A second locking rod 29 is connected to the first locking rod 26 via a change-over switch movement 30. The first locking rod 26, which extends parallel at the side edge of door leaf 2, moves with the control panel 14 between a high position, in which the main deadbolt 4 is in its open position, and a low position, in which the deadbolt main 4 is in its closed position. The lower end of the first locking rod 26 forms the auxiliary deadbolt 8 which engages in the lower mortise 10. The upper end 31 of the first locking rod 26 cooperates with the motion reverser 30. This motion reverser 30 includes a lever 32 which pivots in its center around a fixed point 33 and which has, at each of its ends, an axial mortise 34 and 35. A stud 36 provided on the upper end 31 of the first locking rod 26 engages in the mortise 34. Similarly, a nipple 37 provided on the lower end of the second locking rod 29 engages in the mortise 35. When the first locking rod 26 moves up and down down towards its locking position, the second locking rod 29 undergoes, thanks to the presence of the movement reverser 30, a movement from the bottom at the top, so that its free end 11 enters the corresponding mortise 11 formed in the lintel 38 of the frame 3.

Fig. 1 shows the low position of the control piece with the bolt main frame 4 in its locked position and the linkage 5 in the locking position. To bring the control part 14 into its high position, as shown in Figs. 2 to 4, we can use a key, engaged in a keyhole 39, or an electric motor 40 to remote control. Remain to note that lock 1 advantageously comprises a latch bolt 12, which is locked in a projecting position by an arm 25 of the control part 14, when the latter is in its low position.

Fig. 2 shows the door leaf 2 in a closed position with the lock in the open position, i.e. the main deadbolt 4 in a retracted or open position, the linkage 5 in an unlocked position and the bolt throwing 12 in an unlocked position. A spring, not shown in Fig. 2, move the pusher 13 in the direction of the frame 3, so that it is brought into a projecting position when the door is opened. In this projecting position, a lug 43, which is provided on the internal part of the pusher 13, acts against a stop 44 of the control plate 14 and holds the latter in its high position as shown in FIG. 4. To open the door, it suffices, therefore, to apply a pushing force on the sheet door or operate a handle, not shown.

The electric motor 40 can be a conventional motor. He drives a wheel tooth 41 provided, near its periphery, with a stop 42. The latter can act on the control plate 14 and bring it from its position low to its high position, thereby unlocking the main deadbolt 4 and the locking linkage 5. It will be appreciated that the energy required to automatic locking of lock 1 in closed position of door 2 is stored in the return spring 24 when opening the lock 1 using of the electric motor 40, respectively using a key.

Fig. 3 shows an intermediate state of the lock 1 during the opening of the door. If we compare this position to that of FIG. 2, we see that the bolt throwing 12 is out of its mortise but still leans against the door frame 3. In fact, in this Fig. 3, the door leaf 2 occupies an intermediate position between the closed position and the open position.

Fig. 4 shows the state of lock 1 when the door is fully open. In this open position, the bolt 12 and the pusher 13 do not lean more against door frame 3, but are completely free and are pushed by springs (not shown) in their projecting position. In at the same time, the lug 43 provided on the internal part of the pusher 13 acts against the stop 44 of the control plate 14 and maintains the latter in its high position. Thus, the main deadbolt 4 and the locking linkage 5 are kept in their withdrawn unlocking positions. When closing the door, the pusher 13 comes into contact with the frame 3, which then pushes inward by releasing the stop 44 and, therefore, also the control plate 14. The return spring 24 acts on the deadbolt main 4 and brings it into its locked position. The nipple 22 drives the control plate 14 towards the low position by locking the linkage 5 in its locking position, as shown in FIG. 1.

It is understood that the invention is not limited to this embodiment particular but that many variants can be envisaged without go beyond the scope of this invention. For example, the locking linkage 5 can be mounted directly on the main deadbolt 4, for example on the stud 22. Furthermore, the control means for detecting the position of the door leaf in relation to the door frame could also include electric detectors.

Claims (9)

Automatic security lock for a door (2), said lock (1) comprising a main deadbolt (4) capable of engaging in a mortise of an adjacent element in the closed position of the door (2), to define a locking position; control means (13) capable of detecting said closed position of the door (2); and main deadbolt control means (4) slaved to said control means (13) and connected to said deadbolt (4), so as to be able to bring the latter automatically into its locked position when said control means detect said closed position the door (2); characterized by a first locking rod (26) and a second locking rod (29), each of these two locking rods (26, 29) being mounted so as to be able to slide in a direction perpendicular to the locking direction of said deadbolt main (4), and each of these two locking rods (26, 29) having a free end designed as an auxiliary deadbolt (8, 9) capable of engaging in a mortise (10, 11) of an adjacent element in closed position of the door (2); said main deadbolt control means (4) being connected to the first locking rod (26) so as to be able to bring the latter automatically into its locked position by translation in a first direction, when said control means detect said closed position of the door (2); and by a movement reverser (30) which is connected between said first locking rod (26) and said second locking rod (29), so as to bring the latter automatically into its locked position by translation in a direction opposite to said first sense. Lock according to claim 1, characterized in that said means for controlling said main deadbolt (4) comprise a return spring (24) capable of bringing said main deadbolt (4) into its locked position; and said control means (13) comprise a locking means (43, 44) capable of locking said main deadbolt (4) in the open position if an open position of the door (2) is detected and capable of unlocking said bolt main frame (4) if a closed position of the door (2) is detected. Lock according to claim 1 or 2, characterized in that said control means comprise a control part (14), this control part (14) being mounted in said lock (1) so as to be able to undergo a translational movement in a plane parallel to the direction of movement of said main deadbolt (4) and to cooperate, on the one hand, with said main deadbolt (4) and, on the other hand, with said locking linkage (5), to drive simultaneously said main deadbolt (4) and said locking linkage (5) in their respective locking position. Lock according to claim 3, characterized in that said control part (14) is mounted in said lock (1) so as to be able to undergo a translational movement in a direction substantially perpendicular to the direction of movement of said main deadbolt (4 ). Lock according to any one of claims 3 or 4, characterized in that said control part (14) cooperates with a throwing bolt (12) so as to lock the latter in a locked position when said main dead bolt (4) is also in its locked position. Lock according to any one of claims 1 to 5, characterized in that said first locking rod (26) is articulated on said control part (14). Lock according to any one of claims 1 to 6, characterized in that said movement reverser (30) comprises a lever 32 which pivots in its center around a fixed point (33) and which has, at each of its ends, an axial mortise (34, 35) receiving a stud (36, 37) from one of the two locking rods (26, 29). Lock according to any one of Claims 1 to 7, characterized in that the said control means comprise a pusher (13) and a spring bringing the said pusher (13) into a projecting position when the door (2) is opened . Lock according to claim 8, characterized in that said pusher (13) is in a retracted position when said main deadbolt (4) is in its locked position and in a projecting position when said main deadbolt (4) is in its open position.

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