EP1340873B1 - Locking device - Google Patents

Abstract

The locking mechanism has a lock housing (10) containing a sliding latch and an operating mechanism for displacement of the latch, cooperating with a sliding carriage provided with a second latch, moved in conjunction with the first latch. The sliding carriage can be moved along parallel guide rails (20), with a blocking element (38) preventing the latch release by fitting through a blocking opening (42) in one rail.

Description

The invention relates to a locking device with a lock housing, a slidably guided in the lock housing case and an actuating device for automatically closing after closing the door and pushing out the case.

From the EP 0 798 436 A2 a locking device is known, which has a main lock box and two additional lock boxes, which are fastened to a lock cuff, wherein the two additional lock boxes are coupled via a drive rod to the main lock box. The additional lock box is with a latch bolt is automatically pushed out of the housing of the additional lock box after closing the door.

The invention has for its object to provide a locking device, which offers even greater security against burglary.

This object is achieved with a locking device of the type mentioned in the present invention, that in the lock housing a carriage is displaceably guided, that the actuating device engages the carriage and that on the carriage, a second case is arranged, which is moved together with the first case.

In the locking device according to the invention not only one, but two traps are pushed out of the lock housing and enter the associated, provided in the frame strike plate, so that the door is locked in this area via two traps with the frame. For unauthorized opening of the door in the locking device according to the invention two traps would have to be actuated, in particular at the same time or would have destroyed both these traps, for example sawn be. In this case, one of the two traps made of a particularly resistant material, such as a hardened Be made of steel. Such a locking device offers a much higher security against burglary than conventional locks.

In a further development it is provided that one of the traps is designed as a latch bolt. Such latch bars are in principle from the EP 0 798 436 A2 known. These latch bars have the task of automatically relocate the trap from the case position into the latch position after the door has been closed, so that a complete locking of the door takes place via this latch bolt. Such a locked door is, especially if both cases are in the bolt position, hardly open without authorization.

Another feature of the invention provides that the traps are pushed out at the same time, which is caused by these traps being on a carriage, and the carriage displacing the two traps from the retracted position to the trapping position and, if necessary, from the latter to the locked position ,

A uniform displacement of the carriage within the lock housing is achieved in that the carriage at two parallel to the extension direction extending Rails is guided. In addition, this avoids that the carriage is tilted.

A further increase in safety is achieved by providing a reverse lock. This backstop prevents the ejected trap from being unauthorized, e.g. by means of a tool, is inserted into the lock housing.

In this case, according to a preferred embodiment, the non-return lock have a case lock, which engages in a latched recess in a housing-fixed recess.

With preference, the recess is provided in one of the rails. In this way, the forces exerted during pushing back directly into the rail and be derived from the rail directly into the lock housing, so that the trap is optimally supported. In addition, it requires no additional elements for the realization of the catch, since they are formed in a simple design as a recess in the rail.

In order to further increase safety, the reverse lock is displaceable transversely to the longitudinal direction of the rail. In this way, for example, gravity the Rückdrücksperre be used to shift them in the direction of the locking position or to keep the Rückdrücksperre in the locked position. Preferably, the non-return lock engages under spring force in the recess.

Finally, the reverse lock is preferred by means of a Fallenrückstellhebels unlocked. This latch reset lever is actuated by the actuator, e.g. driven by the drive rod and causes the sliding back of the carriage, but previously the back pressure lock is unlocked.

Further advantages, features and details of the invention will be apparent from the following description, in which a particularly preferred embodiment is described in detail with reference to the drawing. The features shown in the drawing and mentioned in the description and in the claims may each be essential to the invention individually or in any combination.

Fig. 1:

eine Draufsicht auf eine Verriegelungseinrichtung mit abgenommenem Gehäusedeckel;

Fig. 2:

eine Draufsicht auf einen Schlitten mit daran befestigen Fallen;

Fig. 3:

eine im Schlossgehäuse verschieblich lagerbare Schubstange;

Fig. 4:

eine Rückdrücksperre;

Fig. 5:

einen Fallenrückstellhebel;

Fig. 6:

eine Fallenausschubfeder; und

Fig. 7:

eine Rückdrücksperrenfeder.

In the drawing show:

Fig. 1:

a plan view of a locking device with removed housing cover;

Fig. 2:

a plan view of a carriage with it attaching traps;

3:

a displaceable in the lock housing slide rod;

4:

a reverse lock;

Fig. 5:

a latch reset lever;

Fig. 6:

a trap extension spring; and

Fig. 7:

a reverse lock spring.

The Fig. 1 shows a generally designated 10 lock housing, wherein the housing cover is removed. In the lock housing 10, a push rod 12, which in Fig. 3 is shown, in the direction of the double arrow 14 and a carriage 16, which in Fig. 2 is shown displaceably mounted in the direction of the double arrow 18. To guide the carriage 16 are two rails 20, which extend parallel to the double arrow 18. The carriage 16 is provided with a groove (not shown) into which the upper rail 20 slides, with the lower end face of the carriage 16 sliding along the longitudinal side of the lower rail 20 facing it.

On the carriage 16, a first case 22, which is designed as a latch bolt, screwed. Parallel to the case 22 is located on the carriage 16, a second case 24 which is also screwed, which is not designed as a latch bolt. With regard to the detailed design of the latch bolt is on the EP 0 798 436 A2 directed. In addition, the carriage 16 is provided with a buffer element 26 made of PUR, which in a provided on the carriage 16 receptacle 28 (FIG. Fig. 2 ) can be inserted. By the buffer member 26, the impact noise of the carriage 16 is attenuated on the inside of the wall 30 of the lock housing 10.

The Fig. 1 and 5 also show a latch reset lever 32 which is actuated by a sliding element 34 of the push rod 12, which in turn is driven by a drive rod (not shown). With this case reset lever 32, as already in the EP 0 798 436 A2 discloses the case 22 and the carriage 16 of the in Fig. 1 shown displaced position in a retracted position in the lock housing 10 position. In this case, the carriage 16 slides along the rails 20th

Before the carriage 16 from the in the Fig. 1 shown position in the lock housing 10 is withdrawn, deflects a nose 36 of the Fallenrückstellhebels 32 a back pressure lock 38 upwards, whereby the tabs 40 of the Rückdrücksperre 38 are excavated from the recesses 42. In the illustrated locking position of the return lock 38, the tabs 40 engage in two recesses 42 a. The first latching recess 42 is provided in the upper rail 20 and the second latching recess 42 is arranged in a bar 62 extending parallel to the upper rail 20. The recesses 42 prevent displacement of the carriage 16th

Furthermore, in the Fig. 4 recognizable that the non-return device 38 has a perpendicular to the plane bent tab 44, at which a leg 46 of the in Fig. 7 shown backpressure spring 48 is supported. The other leg 50 is located on a shoulder 52 of the carriage 16 (see Fig. 2 ), wherein the spring 48 is held by a pin 54. About the spring 48, the Rückdrücksperre 38 in the in FIG. 1 held locking position held in which the tabs 40 engage in the recesses 42.

Finally, the show Fig. 1 and 6 nor a leg spring 56, one leg 58 is supported on the lock housing 10 and the other leg 60 the slide 16 and thus the case 22 ausschiebt from the lock housing 10.

In summary, it can be stated that two traps 22 and 24 are pushed out of the lock housing 10 with the carriage 16, whereby e.g. the case 24 may be made of a hardened steel, whereby the overall burglary security is substantially increased.

Claims (10)

1. Locking mechanism comprising a lock housing (10), a latch (22) which is slideably guided in the lock housing (10), and an actuating mechanism for automatic pushing out of the latch (22) after closing of the door and for pulling back the latch (22), characterised in that a sliding carriage (16) is displaceably guided in the lock housing (10), that the actuating mechanism engages with the sliding carriage (16) and that a second latch (24) which is moved together with the first latch (22) is arranged on the sliding carriage (16).
2. Locking mechanism according to claim 1, characterised in that one of the latches (22 or 24) is configured as a drop latch.
3. Locking mechanism according to one of the preceding claims, characterised in that the latches (22 and 24) are pushed out simultaneously.
4. Locking mechanism according to one of the preceding claims, characterised in that the sliding carriage (16) is guided on two rails (20) extending parallel to the pushing out direction (18).
5. Locking mechanism according to one of the preceding claims, characterised in that a push-back block (38) is provided.
6. Locking mechanism according to claim 5, characterised in that the push-back block (38) has a latch block (40) which engages in a locking recess (42) when the latches (22 and 24) have been pushed out.
7. Locking mechanism according to claim 6, characterised in that the locking recess (42) is provided in the rail (20) and/or the bar (62).
8. Locking mechanism according to one of the claims 5 to 7, characterised in that the push-back block (38) can be displaced transversely to the longitudinal direction of the rails (20).
9. Locking mechanism according to one of the claims 5 to 8, characterised in that the push-back block (38) engages under spring force in the locking recess (42).
10. Locking mechanism according to one of the claims 5 to 9, characterised in that the push-back block (38) can be unlocked by means of a latch reset lever (32).

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