EP0779402B1 - Safety lock - Google Patents

Abstract

The lock has a bolt (2) which can be actuated selectively e.g. by an electromagnet (5) or motor or by a key-operated mechanism with sets of closing and locking tumblers (6,7) adjustable on a movable shaft (8). It is spring-loaded (9) and released by the upper portion of a retraction lever (10) coming up against a spike (2c) when the electromagnet is energised. To simplify the separation of the electromechanical and purely mechanical drives, a follower spike (8b) on the shaft is arranged to make contact with the side of the lever remote from the surface actuating the locking mechanism.

Description

The invention relates to a security lock with an optional electro-mechanical, for example by an electromagnet or an electric motor, or operated by a key-operated mechanical locking mechanism Bolt, the mechanical locking mechanism at least one comprises a tumbler set arranged on a movable tumbler shaft and the electro-mechanical actuation takes place via a retraction lever which at the same time a securing the at least the extended position of the bolt Barrier operated.

Security locks of the type described above are known.

Proceeding from this, the object of the invention is to further develop the known construction in such a way that with a simple construction, despite the action on the same bolt, there is a separation between the electro-mechanical actuation on the one hand and the purely mechanical actuation by means of a key-operated locking mechanism on the other.

The solution to this problem by the invention is characterized in that a driving mandrel is arranged on the tumbler shaft, which rests on the side of the retraction lever opposite the actuating surface for the locking mechanism.

This proposal according to the invention takes place at electro-mechanical Operation of the latch a separation between that on the tumbler shaft arranged driving mandrel and the return lever, whereas at one use of the key-operated locking mechanism mechanical operation of the bolt via the retraction lever. The invention The proposal is therefore a particularly simple coupling between the two optional types of actuation.

This coupling is a prerequisite for a further development according to the invention, according to which a second, which can be operated from the opposite side of the door, key-operated mechanical locking mechanism with at least one arranged a movable tumbler shaft tumbler set whose tumbler shaft is also provided with a driving mandrel is, which in turn on the opposite of the actuating surface for the barrier Side of the return lever.

This development according to the invention has the advantage that Security lock with two key operated mechanical locking mechanisms can be provided either the same or a different one May have locking without the beard of the associated key must necessarily be symmetrical.

If the security lock according to the invention is used in passage doors that are passed relatively frequently by authorized persons, there is either a heavy load on the electro-mechanical actuation triggering control center or an awkward key operation in individual cases. In order to maintain the necessary safety on site, i.e. an electro-mechanical actuation of the Enabling security lock can be according to another feature the invention, the electro-mechanical actuation of the bolt or mechanical locking mechanisms can also be triggered by a switch that by a part that can only be moved by a key with a suitable lock of the tumbler can be actuated.

Fig. 1

eine Ansicht des in der Schließstellung befindlichen Schlosses mit ausgeschlossenem und gesperrten Riegel bei geschlossener Tür,

Fig. 2

eine der Fig. 1 entsprechende Sicht des in der Öffnungsstellung befindlichen Schlosses mit elektro-mechanisch zurückgezogenem Riegel bei noch in der Schließstellung befindlicher Tür,

Fig. 3

eine der Fig. 2 entsprechende Darstellung bei geöffneter Tür, jedoch elektro-mechanisch zurückgezogenem Riegel,

Fig. 4

eine weitere Ansicht des Schlosses bei geöffneter Tür gemäß Fig. 3, jedoch ausgeschobenem Riegel,

Fig. 5

eine der Fig. 2 entsprechende Ansicht des Schlosses, dessen Riegel elektro-mechanisch aufgrund einer Schlüsselbetätigung zurückgezogen worden ist, bei noch verschlossener Tür,

Fig. 6

eine weitere Darstellung des Schlosses nach Zurückziehen des Riegels mit Hilfe des mechanischen Schließwerkes, wiederum bei noch verschlossener Tür,

Fig. 7

eine Draufsicht auf das mit zwei mechanischen Schließwerken versehene Schloß,

Fig. 8

einen Längsschnitt durch das Schloß gemäß der Schnittlinie VIII - VIII in Fig. 1,

Fig. 9

eine der Fig. 7 entsprechende Draufsicht auf das in eine Tür eingebaute Schloß beim Schließen der Tür, und zwar beim Auftreffen auf ein am Türrahmen angeordnetes Schließblech,

Fig. 10

eine der Fig. 9 entsprechende Darstellung bei fortschreitender Schließbewegung der Tür,

Fig. 11

ein Ausführungsbeispiel eines Schlüssels zur elektro-mechanischen Betätigung des Schlosses und

Fig. 12

ein Ausführungsbeispiel eines Schlüssels für die mechanische Betätigung des Schlosses.

An exemplary embodiment of the security lock according to the invention is shown in the drawing, namely:

Fig. 1

a view of the lock in the closed position with the bolt locked and locked when the door is closed,

Fig. 2

1 corresponding view of the lock in the open position with electro-mechanically retracted bolt with the door still in the closed position,

Fig. 3

2 shows a representation corresponding to FIG. 2 with the door open, but the electromechanically retracted bolt,

Fig. 4

3 shows another view of the lock with the door open according to FIG. 3, but with the bolt pushed out,

Fig. 5

2 corresponding view of the lock, the bolt of which has been withdrawn electromechanically due to a key actuation, with the door still locked,

Fig. 6

another representation of the lock after pulling back the bolt with the help of the mechanical locking mechanism, again with the door still closed,

Fig. 7

a plan view of the lock provided with two mechanical locking mechanisms,

Fig. 8

2 shows a longitudinal section through the lock according to section line VIII - VIII in FIG. 1,

Fig. 9

7 shows a plan view corresponding to FIG. 7 of the lock installed in a door when the door closes, namely when it strikes a striking plate arranged on the door frame,

Fig. 10

9 shows a representation corresponding to FIG. 9 as the door continues to move,

Fig. 11

an embodiment of a key for electro-mechanical actuation of the lock and

Fig. 12

an embodiment of a key for the mechanical actuation of the lock.

The castle shown in the view without a castle ceiling includes a Lock plate 1, with a faceplate 1a and a total of four threaded bushings 1b is provided for fastening the castle ceiling, not shown. On the lock plate 1, a bolt 2 is slidably mounted with his Bolt head 2a in a recess of the face plate 1a and by means of an elongated hole is guided longitudinally on a bearing pin 1 c, which is arranged on the lock plate 1 is. The bolt 2 is through a run-on slope 2b on the bolt head 2a designed as a latch bolt. In the closed position, the latch head 2a of the Bolt 2 in a recess of a striking plate 3, which according to FIGS. 9 and 10 is attached to a door frame 4.

The latch 2 can be actuated either electro-mechanically or by a key operated mechanical locking mechanism. With that on the The embodiment shown in the drawings is for electro-mechanical Actuation provided a solenoid 5. The mechanical locking mechanism includes a set of height-adjustable locking tumblers arranged on the lock plate 1 6 and an associated set of convertible locking devices 7 which are also height-adjustable on a tumbler shaft 8 and cooperate with a retaining pin 1d arranged on the lock plate 1.

For the electro-mechanical actuation of the bolt 2, which is in the direction of it extended locking position is loaded by a locking spring 9, the Armature 5a of the solenoid 5 together with a retraction lever 10, which as two-armed lever on a bearing pin 1e of the lock plate 1 pivotable is stored. In the case of a current flowing through the solenoid 5 The pivoting movement of the retraction lever 10 comes in a clockwise direction upper part of the return lever 10 on a driving mandrel 2c of the bolt 2 for System so that it is pushed out of its with the help of the solenoid Locked position can be converted into a release position, such as in 2 and 3 is shown.

To prevent unauthorized pushing back of the bolt 2 into this release position prevent, a locking slide 11 is provided which is transverse to the direction of movement of the bolt 2 by means of elongated holes on bearing pins 1f of the lock plate 1 is slidably mounted. This locking slide 11 carries on its underside a locking pin 11a, which cooperates with a projection 2d of the bolt 2.

To actuate the locking slide 11, a trigger element 12 is provided, this in turn via elongated holes on the driving mandrel 2c on the one hand and on the other hand on a bearing pin 2e of the bolt 2 on this in the longitudinal direction the same is movably mounted. The trigger element 12 is with a control surface 12a for a driving pin arranged on the locking slide 11 11b so that a relative movement of the trigger element 12 to the bolt 2, a movement of the locking slide 11 takes place, the locking pin 11a moved out of the range of motion of the projection 2d, so that the latch 2 can be moved between its end positions.

To actuate the loaded by a spring 11c in the direction of its locking position Locking slide 11 with the help of the trigger element 12 formed Control surface 12a, a stop mandrel 12b is arranged on the trigger element 12, which when the retraction lever 10 is pivoted clockwise timed before the driving mandrel 2c of the bolt 2 by the retraction lever 10 is so that with an electro-mechanical retraction movement of the bolt 2nd first the locking slide 11 is raised and thus the locking between Locking pin 11a and projection 2d is lifted before over the driving pin 2c a retraction force is exerted on the bolt 2. To the respective Monitoring the position of the bolt 2 is in the embodiment a limit switch 13 is provided. Through a further limit switch 14 also monitors the respective position of the locking slide 11.

Around the bolt 2 using the solenoid 5 in an electro-mechanical manner with the door closed from the locked position shown in Fig. 1 in its 2, the solenoid 5 is energized. This pulls its armature 5a back into the housing, thereby the retraction lever 10 is pivoted clockwise. Here will first the trigger element 12 relative to the bolt via the stop pin 12b 2 moved so that the control surface 12a lifts the locking slide 11, whereby whose locking pin 11a releases the projection 2d of the bolt 2. By the further pivoting movement of the retraction lever 10 can thus over the Driving mandrel 2c of the bolt 2 into its release position according to FIG. 2 be withdrawn. Due to the force of the spring 11c, the Lock slide 11 back into its locked position, as shown in FIG. 2 is drawn.

Now when the door provided with the lock is opened, occurs Control wedge 15 in function, which is arranged parallel to the bolt 2 and likewise like this with its head 15a in a recess of the faceplate 1a and by means of a slot on a bearing pin 1g of the lock plate 1 longitudinally movable is stored. The control wedge 15 is also with a run-up slope 15b formed and loaded by a compression spring 16 in the extension direction.

During the control wedge 15 with the door closed according to FIG. 2 with its End face on the striking plate 3 of the door frame, it is when opening the Door moved forward due to the compression spring 16, as shown in Fig. 3 shows. Here, the control wedge 15 lifts between two Recesses 15c trained projection 15d against the locking slide 11 the force of the spring 11c, as shown in Fig. 3. In this raised Position of the locking slide 11 gives the locking pin 11a the projection 2d of the bolt 2 free, so that this due to the locking spring loading it 9 from the position shown in FIG. 3 into the position shown in FIG. 4 Position reached, in which the bolt head 2a of the bolt 2 in the extended Position is. Since the solenoid 5 is no longer energized, returns also the retraction lever 10 by a counterclockwise direction Pivoting movement back to its starting position according to FIG. 1, as also shown in Fig. 4.

When closing the door with the extended position shown in Fig. 4 of bolt 2 and control wedge 5 first meets the ramp slope 15b of the control wedge 15 according to FIG. 9 on the stepped striking plate 3. This will the nose 11d of the. lying in the rear recess 15c of the control wedge 15 Gate valve 11 raised until it is shown in FIG. 3 on the elevation 15d of Control wedge 15 rests. In this raised position, the locking pin 11a of the locking slide 11, the projection 2d of the bolt 2 free, so that the subsequent Impact of the ramp 2b of the bolt 2 on the striking plate 3 of FIG. 10, the latch 2 against the force of the latch spring 9 4 is pushed back into the lock. The door can can be easily pressed without active actuation of the latch 2. As soon as the door assumes its closed position relative to the door frame 4, it arrives the bolt 2 due to the force of the locking spring 9 loading it into the the locking head 2a provided recess in the striking plate 3, so that the Bolt 2 again occupies the locked position shown in Fig. 1. The control wedge 15 rests with its end face according to FIG. 1 on the striking plate 3. Since the nose 11d of the locking slide 11 in this case in the front recess 15c of the control wedge 15, the locking pin 11a prevents unauthorized pushing back the latch 2 with the help of the projection 2d. The castle is located again in the locking position shown in Fig. 1, from which it is optional by an electro-mechanical actuation with the help of the lifting magnet 5 or by means of a purely mechanical actuation using a key in the release position can be transferred.

Such a purely mechanical actuation of the lock is to follow are explained with reference to FIG. 6. This illustration shows one in one Key guide hole 1h inserted in the lock plate 1 (see Fig. 1) Key S1, which - when properly closed, i.e. Design of the key bit - Via the tumbler channels 6a, the locking tumblers 6 at one Rotation thus raised from the initial position shown in FIG. 1 has that their coupling projections 6b exactly in front of the coupling recesses 7a of the locking tumblers 7 fixed on the bearing pin 1g were. Because of this correspondence between the coupling protrusions 6b of the locking tumblers 6 and the coupling recesses 7a Locking tumblers 7 could be turned by turning the key S1 via the tumbler end 8a of the tumbler shaft 8 with those arranged on it Locking tumblers 7 from that shown in FIG. 1 to that shown in FIG. 6 Position to be withdrawn. Here the guard locking shaft took 8 with a driving mandrel 8b with the retraction lever 10, which has a limited Swiveled clockwise. This swivel movement led to a withdrawal movement of the trigger element via the stop mandrel 12b 12, which in turn raised the locking slide 11 and thus the Release latch 2 for a retraction movement. If now with another Retraction movement of the tumbler shaft 8 with the lower Part of its rear edge to a stop 2f of the bolt 2 to the system came, caused the retraction movement generated by further turning the key S1 the tumbler shaft 8 at the same time a withdrawal of the bolt 2 from the representation shown in FIG. 1 into the release position according to FIG. 6. The door can now be opened.

Even when opening the door, i.e. when the control wedge 15 is released the tumbler in the position shown in Fig. 6 because of Tumbler shaft 8 by a locking pin 8c arranged on it, which in an H-shaped recess 6c engages in the locking tumblers 6 from the lowered locking tumblers 6 as shown in FIG. 6 is held.

To slide out the bolt 2, it is necessary to draw the one shown in FIG Turn key 51 counterclockwise so that the Locking tumblers 6 and with these the locking tumblers 7 are raised and the tumbler shaft 8 via its tumbler end 8a into the position Fig. 1 is traced back in the separation between locking and locking tumblers 7 or 6 has taken place. The bolt 2 is carried along here by the force of the locking spring 9.

Since in the illustrated embodiment, the lock with an adjustable Locking mechanism is equipped, the key S1 in the position according to Fig. 6 deducted and replaced by another key, so that when locking the lock the locking tumblers 7 with a new one Closure can be placed on the holding pin 1d. An opening of the lock is then only with a key that has the new lock possible.

After a purely mechanical opening of the lock using a key S1 it is therefore necessary to close the lock after proper closing to move the door into its locked position using the key.

This more cumbersome closing of the door with a key operated Transfer of the lock into its locked position by an electro-mechanical Actuation of the lock on site, i.e. regardless of one To be able to replace the control center, a switch 17 is provided in the lock by a movable only from a key S2 with a suitable lock Part of the tumbler is actuated.

In the exemplary embodiment, this switch 17 is retracted as shown in FIG. 5 of the tumbler shaft 8 operated. During the circuit of the Switch 17 is open in the locked position of the lock according to FIG. 1, already causes a slight retraction of the tumbler shaft 8 according to Fig. 5 a closing of the circuit, so that the switch 17 of the Solenoid 5 can be energized to the previously described electro-magnetic transfer of the lock from its locked position into the Achieve release position.

This slight withdrawal of the tumbler shaft 8 from the starting position 1 in the position shown in FIG. 5 is a Key S2 used in FIG. 11. This key S2 has the same Closure, i.e. the same double-sided key bit as the key S1 12, in the purely mechanical actuation explained above of the castle has been used. With the key S2 thus a proper lifting of the tumblers 6, so that when Turning the key S2 further interacts with the locking tumblers 6 with the locking tumblers 7 and the tumbler shaft 8 over his Guard locking 8a with the aid of the key S2 in that shown in Fig. 5 Position can be withdrawn, in which the switch 17 energizes the Solenoid 5 triggers. A further withdrawal of the tumbler shaft 8 the key S2 prevents that on the lock plate 1 A pin-shaped stop 1i is provided in the region of the tumbler channels 6a which prevents the key S2 from turning further. The key S2 can therefore only be used for electro-mechanical actuation of the Lock are used; a purely mechanical withdrawal of the bolt 2 is not possible using key S2.

To despite the presence of the pin-shaped stop 1i in the tumbler channels 6a a complete turning of the key S1 for one To enable mechanical actuation of the lock, this key is S1 12 with a recess a corresponding to the stop 1i.

The operated with the help of the key S2 by the tumbler shaft 8 Switch 17 thus enables an electro-mechanical actuation of the lock via the solenoid 5, without the opening through a remote one hand Central or by a full mechanical actuation of the tumbler must be done. The above-described configuration of the Latch 2 as a latch bolt with a ramp 2b enables one Closing the door by simply pushing it shut. Because the electro-mechanical Actuation of the lock with the key S2 presupposes that this Key S2 has the correct lock, the electro-mechanical actuation takes place of the castle on site with the same security as that purely mechanical actuation using the S1 key.

The driving mandrel 8b arranged on the tumbler shaft 8, which with the the actuating surface for the stop mandrel 12b and the driving mandrel 2c opposite side of the return lever 10 cooperates, results in a very simple coupling between the mechanical, key-operated tumbler of the lock and that for electro-mechanical actuation associated retraction lever 10 or the latch 2. The construction described enables a separation between the to the mechanical tumbler belonging driving mandrel 8b and the retraction lever 10 in electro-mechanical Activity and, on the other hand, creates an indirect, through which Retraction lever 10 connection between the mechanical tumbler and the bolt 2 with purely mechanical actuation of the lock using the key S1.

Because of this coupling, it is possible as in the exemplary embodiment on the opposite side of the door, a second one that can be operated from the other side of the door Arrange locking mechanism, as shown in FIGS. 8 to 10. At the Embodiment is another, the one described above Lock corresponding lock, the tumbler shaft 8 'according Fig. 8 provided with a driving mandrel 18a via an angle piece 18 is, which protrudes through a recess 1k in the lock plate 1 and also how the driving mandrel 8b interacts with the retraction lever 10. The door can be either electro-mechanical by either lock as well as being opened mechanically, the two Locks can have the same or a different lock; in In both cases, the keys S1 and S2 can be used with asymmetrical key rings be carried out.

Reference symbol list:

1

Lock plate

1a

Forend

1b

Threaded bush

1c

Bearing pin

1d

Retaining pin

1e

Bearing mandrel

1f

Bearing pin

1g

Bearing pin

1h

Key guide hole

1i

attack

1k

Recess

2nd

bars

2a

Bolt head

2 B

Ramp

2c

Driving mandrel

2d

head Start

2e

Bearing pin

2f

attack

3rd

Striking plate

4th

Door frame

5

Solenoid

5a

anchor

6

Locking tumbler

6a

Tumbler channel

6b

Coupling projection

6c

Recess

7

Locking device

7a

Coupling recess

8th

Tumbler shaft

8th'

Tumbler shaft

8a

Deadlock

8b

Driving mandrel

8c

Locking pin

9

Deadbolt

10th

Retraction lever

11

Gate valve

11a

Locking pin

11b

Driving pin

11c

feather

11d

nose

12th

Release element

12a

Control surface

12b

Stop mandrel

13

Limit switch

14

Limit switch

15

Control wedge

15a

head

15b

Ramp

15c

deepening

15d

Survey

16

Compression spring

17th

counter

18th

Elbow

18a

Driving mandrel

S1

key

S2

key

a

Recess

Claims (3)

1. Safety lock with a bolt (2) selectively actuable either electromechanically, for example by means of an electromagnet (5) or an electric motor, or by means of a key-actuated mechanical locking mechanism, the mechanical locking mechanism comprising at least one tumbler set arranged on a movable tumbler shaft (8), and electromechanical actuation taking place via a pull-back lever (10) which at the same time actuates a detent mechanism securing at least the pushed-out position of the bolt (2), characterized in that a driving pin (8b) is arranged on the tumbler shaft (8), the said driving pin bearing on that side of the pull-back lever (10) which is located opposite the actuating face for the detent mechanism.
2. Safety lock according to Claim 1, characterized in that a second key-actuated mechanical locking mechanism, operable from the opposite side of the door and having at least one tumbler assembly arranged on a movable tumbler shaft (8'), is provided, the tumbler shaft (8') of the said second locking mechanism likewise being provided with a driving pin (18a) bearing on that side of the pull-back lever (10) which is located opposite the actuating face for the detent mechanism.
3. Safety lock according to Claim 1 or 2, characterized in that the electromechanical actuation of the bolt (2) of the mechanical locking mechanism or mechanical locking mechanisms can be triggered by a switch (17) which is actuable by means of a part of the tumbler assembly which is movable only by a key with a suitable locking arrangement.

Images