EP1288401B1 - Lock, in particular for a cabinet - Google Patents

Abstract

The lock has a housing (2) containing a bolt (9) which is movable from a back position to a front position against a spring force, by a rotary knob (5) which can be operated from outside the cupboard. The movement of the bolt is blocked and released by an electromagnetically actuable retainer (17). Both positions of the bolt are restrained and after releasing the restrainer (17) the pre-locked bolt returns automatically to the locked position.

Description

The invention relates to a lock, in particular a cabinet lock, with a a lock housing from a rotary handle to be operated on the outside of the cabinet against spring loading from a closed to a pre-closed Position relocatable bolt, the relocability of one Electromagnetically actuated guard locking can be blocked and released.

Such locks are mainly used on cabinet doors of lockers a locking system used, such as is used in bathing establishments. A lock is known from DE 198 32 516 A1, which is used to achieve this a locking and unlocking position requires a transponder. After in The locking comes into effect in the locked bolt position in the locked position to the bolt and blocks its relocation. The Closing back then requires the use of the transponder, so that then by means of the turning handle the bolt, supported by the spring load, is closable. Closing the latch from the closed Position can also be made without using the transponder become. However, this controls the guard locking in the blocking position.

The object of the invention is based, a generic To make the lock more secure and user-friendly in terms of locking technology.

This task is first and foremost with a lock with the Features of claim 1 solved, it being based on the fact that both the pre-closed as well as the closed bolt position locked and the pre-locked bolt after release of the guard locking automatically closes.

Due to such a design, a lock of the type in question is given, which essentially not only ensures increased security, but also brings user-friendly advantages. Basically, without Do not use the rotary handle to pre-lock the transponder. A relocation of the bolt from the pre-closed or closed bolt position requires the relocation of the electromagnetically actuated guard locking for example by means of the corresponding transponder. Because the previous one Bolt is secured only by the guard locking, can be done after electromagnetic release actuation of the guard locking this spring-related close automatically. The visitor to a bathing establishment lays open of the locker or cabinet, for example the transponder to the outside of the cabinet Turning handle on. This is accompanied by the recognition of the access authorization the tumbler moves electromagnetically into the release position, so that the automatic relocation of the bolt due to the stress on it Spring takes place. Controls after reaching the locked bolt position the electromagnetically actuated guard locking again in the blocking position and This prevents the bolt from closing, unless the Locking authorization or transponder available. In detail is according to the invention proceeded so that the tumbler is assigned to a swivel lever which thus coupled to a bistable electromagnet via a spring element is that the spring force interlocks depending on the position of the armature of the electromagnet burdened in one direction or the other. On the previous one Bolt-acting push-back forces are exclusively from the the guard locking swivel lever added. The electromagnet is released from any back pressure. His job is exclusively in acting on the pivot lever via the spring element. In terms of the locking of the swivel lever is one in one Longitudinal slot of the ledger projection, which longitudinal slot each diagonally opposite locking niches for the projection at the ends formed. This ensures that the Dive into the corresponding barrier niche as intended and in this way blocked the relocation of the bolt. To achieve one Simple, effectively reliable design, the spring element is itself extending over the longitudinal extent of the one-armed swivel lever on both sides clamped rod. In the area between the two clamping points attacks the anchor. The wire itself can be one of form a turn through the arm, so that with the coupling to the anchor is realized with very little effort. One of the two clamping points are provided on the housing side, while the other Clamping point is formed by the pivot lever. To the respective operating status the swivel lever or the tumbler to register what for example via electronics assigned to the lock, the Swivel lever on its end a magnet, which with a magnetic switch interacts. It is further provided according to the invention that the magnet actuation is initiated by querying a transponder. Just the correct transponder can operate the magnet of the associated one To accomplish the lock. In detail, this looks like that starting out from the closed bolt position the query of the person authorized to lock Transponders a shift of the guard locking from the one niche in a readiness to intervene in the other barrier niche, which Readiness to engage is maintained until either the Magnetic switch recognizes the entry into the other barrier niche or an at Transponder query caused time interval has expired, the latter if so the guard locking to which a blocking niche is relocated. After detection of the Accordingly, the transponder's authorization to lock remains sufficient time by means of the rotary handle to move the bolt into the pre-closing position. will this If the time interval is not used, the guard locking returns to the blocking position to the deadbolt, so that it can be moved in advance using the turning handle is prevented, unless the query of the authorized to lock again Transponders done. Finally, it turns out to be the operator Another advantage is one on the front of the rotary knob To provide rotating handle arranged signal bar, which is in the bar forward position in a horizontal position and in the bolt withdrawal position in a vertical position. The signal bar thus symbolizes - for the user easily visible - the respective bolt position of the lock.

Fig.1

eine Ansicht eines erfindungsgemäß gestalteten Schlosses mit zurückgeschlossenem Riegel, im Bereich der Drehhandhabe teilweise aufgebrochen dargestellt,

Fig. 2

eine Seitenansicht der Fig. 1 mit der Drehhandhabe zugeordnetem Transponder,

Fig. 3

eine Ansicht des Schlosses bei fortgelassener Schlossdecke, die zurückgezogene Riegelstellung betreffend,

Fig. 4

eine Herausvergrößerung im Bereich der das Vorschließen des Riegels blockierenden Stellung der Zuhaltung,

Fig. 5

eine der Fig. 1 vergleichbare Darstellung, jedoch bei vorgeschlossenem Riegel,

Fig. 6

eine der Fig. 3 vergleichbare Darstellung, wobei abweichend gegenüber dieser der Riegel vorgeschlossen ist und

Fig. 7

hierzu eine Herausvergrößerung im Bereich der Zuhaltung.

An embodiment of the invention is explained below with reference to the drawings. It shows:

Fig.1

1 shows a view of a lock designed according to the invention with a closed bolt, partially broken open in the area of the turning handle,

Fig. 2

2 shows a side view of FIG. 1 with the transponder assigned to the rotary handle,

Fig. 3

a view of the castle with the castle ceiling omitted, regarding the retracted bolt position,

Fig. 4

an enlargement in the area of the locking position blocking the locking of the bolt,

Fig. 5

1 comparable representation, but with the bolt locked,

Fig. 6

a representation comparable to FIG. 3, with the bolt being pre-locked and deviating from this

Fig. 7

this is an enlargement in the area of the guard locking.

Regarding the lock designated as a whole with the number 1, it is a locker lock, as is the case on lockers of locking systems in one Bathhouse is used. Each lock 1 is attached to the inner surface of one locker door not illustrated. The castle has 1 a box-like lock housing 2. A lock cover 3 covers that Palace Fully equiped. The castle ceiling 3 carries a sleeve 4, which is next to the recording of electronic components, not shown, is used, a Store rotary handle 5. The same is in the outward direction by means of a spring acts against this spring load by about 3 mm in the axial direction be shifted inward. By relocating the rotary handle 5, a radial wing 6 supported by the sleeve 4 is dragged along, which in turn carries a crank pin 7. The rotary handle 5 is on the front side a projecting, diametrically extending signal bar 8. If a latch 9 which can be displaced by the turning handle 5 is closed, the signal bar 8 assumes a vertical position, cf. Fig. 1. With locked Bar 9, however, extends the signal bar 8 in the horizontal position. The signal bar 8 can be colored. He is a transparent, front cover 10 assigned to the rotary handle 5. That means that the turning range of the turning handle extends over a turning angle of 90 °.

The rotary handle 5 including the sleeve 4 include an unillustrated one Antenna for querying the locking authorization of a transponder 11. The latter is designed so that it is by means of a bracelet, not shown can be worn on the arm. Then takes the rotary handle 5 in her Inside a switch sensitive to rotation and / or pressure, which, after appropriate actuation, is carried by the castle ceiling 3 electronic interrogator 12 activated. This is in an electrical connection with a bistable electromagnet arranged below the bolt 9 13. Its armature movable transversely to the bolt displacement direction 14 is coupled via a spring element 15 to a pivot lever 16, which Carrier of a tumbler 17. The pivot lever 16 is designed with one arm and bears around a lock pin 18 on the lock housing, which is in the closed position Bolt 9 extends below the end of the bolt tail 9 '. The bolt head 9 "leads in the associated lock housing wall in a bolt recess 19 of the same. At its free end the Swivel lever 16 a magnet 20. The same is designed as a permanent magnet and interacts with one that interacts with the interrogation device 12, on the lock ceiling 3 fixed magnetic switch 21 together. Depending on the position of the pivot lever 16, the magnetic switch 21 is therefore either the forward or closed bolt position communicated.

The aforementioned spring element 15 is designed so that its spring force holds the tumbler 17 depending on the position of the armature 14 of the electromagnet 13 in one or other direction. With regard to the tumbler 17 it is about a projection of the pivot lever 16. The projection or tumbler 17 is in a longitudinal slot 22 of the bolt tail arranged in the bolt displacement direction 9 'performed. At the end, the longitudinal slot 22 forms diagonally opposite one another Locking niches 23, 24 for the projection 17. In the closed Locking position is the tumbler 17 or the projection in the recess niche 23 and in the pre-closed bolt position in the Blocking niche 24.

With regard to the spring element 15, it is a matter of the longitudinal extent of the one-armed pivot lever 16 extending on both sides clamped wire. Whose one clamping point 25 is fixed to the housing. There is the Wire in the form of a leg spring is designed and supported with the free end on the housing 2. A housing-side stud is used to fix the position 26. The other clamping point 37 is provided on the pivot lever side. The There pivot lever 16 forms a driver pin 27, which is of a U-shaped Bending of the wire is included. Between the clamping points 25 and 27 the wire is wound into a helix 28 which is one Cross pin 29 of the armature 14 is penetrated.

In its upper area, the bolt 9 has a molded-on pin projection 30 provided. One end of this is designed as a tension spring Return spring 31 on. The other end is on a lock housing side Pin 32 set. As a result, the bolt 9 is always in the release direction loaded.

Near the pin projection 30, the bolt 9 forms a transverse to its direction of displacement extending transverse slot 33. The crank pin engages in this 7 a. When bolt 9 is closed, it runs through the crank pin 7 going radials at an angle of approx. 45 ° to the bolt shifting direction. The crank pin is in the locked bolt position 7 rotated further by 90 °, so that a 45 ° orientation of the through the crank pin 7 radial going to the bolt displacement direction is present.

The electronic interrogation device 12 and the electromagnet are fed 13 of batteries, not shown, accommodated in a battery compartment 34, which battery compartment 34 extends from the outside of the lock base 2 '.

The following mode of action occurs:

The user of a locker is taken by the vertical position Signal bar 8 indicates that the bolt 9 of the lock 1 is closed is. Then the tumbler 17 lies within the blocking recess 23. Without any effort of the transponder 11, it is therefore not possible to use the rotary handle 5 bring the latch 9 into the pre-position.

Closing the locker therefore requires activation of the electronic one Interrogator 12. This is preferably done by pressing the turning handle 5 by means of the transponder 11. The query takes place of the transponder 11 after its locking authorization. When the Locking authorization takes place if the tumbler 17 is shifted from the blocking niche 23 in a position ready for engagement in the other blocking niche 24. This readiness for engagement is brought about by the fact that the magnet armature 14 from the position according to FIGS. 3 and 4 into that according to FIGS. 6 and 7 shifts. However, this willingness to intervene is only maintained as long as until either the magnetic switch 21 entering the other Locking niche 24 recognizes or a time interval caused by a transponder request has expired. This is visible through the recognition of a light signal the ceiling 10 of the handle 5. For example, it can with respect to the Light signals are about the lighting up of a green LED. While this ready-for-engagement position is the rotary handle 5 in the clockwise direction to move by 90 °, the crank pin 7 countering the bolt 9 the force of the return spring 31, so that the tumbler 17 in the Niche 24 immersed and thus blocked the bolt. Along with this Immersion pivots the pivot lever 16. The magnet 20 initiates the Magnetic switch 21, which is registered by the interrogator 12.

The lock 1 can only be opened by means of the transponder authorized to lock 11 possible. This is against the face or its horizontal position engaging signal bar 8 placed under pressure on the Rotary handle 5, which has the activation of the interrogator 12. After recognizing the locking authorization of the transponder 11, the electrical takes place Control of the electromagnet 13, the armature 14 of the withdrawn Position moves to the extended position. Because the tumbler 17 the Locking recess 24 leaves and dips into the longitudinal slot 22, the return spring 21 take effect, which closes the bolt 9. In the final phase then engages the tumbler 17 in the locking recess 23 and secures the closed Bolt position. This shift of the swivel lever is over the magnet 20 communicated to the magnetic switch 21. The use of the bistable Electromagnet 13 leads to the advantage that electrical energy can only be achieved a change in the anchor position is required.

If the time interval after transponder request is exceeded and the bolt 9 not pre-locked, another flashing light comes on - e.g. red - so that this indicates to the user that the transponder must be reattached.

Claims (8)

1. Lock, in particular cupboard lock, with a bolt (9), displaceable in a lock housing (2) by a turning handle (5), to be actuated from the outside of the cupboard, against spring loading from a locked-back position into a locked-forward position, the displaceability of which can be blocked and released by an electromagnetically actuatable tumbler (17), characterised in that both the locked-forward and the locked-back bolt positions are secured by the tumbler and the locked-forward bolt (9) locks back automatically after the tumbler (17) has been released.
2. Lock according to claim 1, characterised in that the tumbler (17) is associated with a swivel lever (16) which is coupled to a bistable electromagnet (13) via a spring element (15) in such a way that the spring force loads the tumbler (17) in one direction or the other depending on the position of the armature (14) of the electromagnet (13).
3. Lock according to one or more of the preceding claims, characterised in that the tumbler (17) is configured as a projection held in a longitudinal slot (22) of the bolt (9), the longitudinal slot (22) forming locking niches (23, 24) for the projection (17)\ diagonally opposite one another on the end faces in each case.
4. Lock according to one or more of the preceding claims, characterised in that the spring element (15) is a rod or wire extending over the longitudinal extension of the one-armed swivel lever (16) and clamped in at both end faces and the armature (14) acts between the two clamping points (25, 37).
5. Lock according to one or more of the preceding claims, characterised by a magnet (20) which fits at the end of the swivel lever (16) and cooperates with a magnetic switch (21).
6. Lock according to one or more of the preceding claims, characterised in that actuation of the magnet is initiated by scanning by a transponder (11).
7. Lock according to one or more of the preceding claims, characterised in that, starting from the locked-back bolt position, scanning by the transponder (11) authorised for closing causes a displacement of the tumbler (17) out of one locking niche (23) into the other locking niche (24), this engagement-readiness position being maintained until either the magnetic switch (21) recognises entry into the other locking niche (24) or a time interval caused on scanning by the transponder has elapsed, in the latter case the tumbler (17) being displaced back into the one locking niche (23).
8. Lock according to one or more of the preceding claims, characterised by a signal bar (8) arranged on the front face of the turning handle (5) constructed as a turning button, the signal bar being in a horizontal position in the bolt forward-movement position and in a vertical position in the bolt reverse-movement position.

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