EP0779403B1 - Security lock - Google Patents

Abstract

The lock has a latch (2) operated via an electromagnet, or an electric motor, or by a mechanical lock mechanism operated via an inserted key, which can be secured in the locked position via a blocking slider (11). The latter is operated by a control wedge (15) moved parallel to the latch ahead of the reception of the locking bolt by the lock plate. The blocking slider moves perpendicular to the latch for bringing a locking pin into engagement with the latter.

Description

The invention relates to a lock with an electro-mechanical, for example by an electromagnet or by an electric motor, and / or by a key operated mechanical locking mechanism operated bolt.

Such locks are known in various designs. So shows for example DE 39 38 655 A1 a security lock with a bolt and a special trap, which is electromechanically and individually by means of a Pusher or key can be moved out of their locked position. From the DE 27 27 882 A1 a lock is also known, both a trap and a bolt connected to it and provided with a ramp having. About the bevels of the latch and bolt is when closing a spring-loaded locking device with a door equipped with the lock biased when actuating a programmable coding device can be unlocked via an electromagnet and both the trap and the Pulls back.

Finally, GB-A-2 277 349 shows a lock with a key or manually operated bolt, which is designed as a latch bolt with a ramp and is blocked in the extended blocking position by a locking slide, which in turn is guided by a movable one parallel to the bolt and also can be actuated with a ramp wedge. An actuation this bolt by an electromagnet or an electric motor is not intended.

The invention has for its object to develop a lock of the type described in such a way that a door provided with such a lock can be closed by simply pressing it even when the bolt is pushed out, without impairing security or allowing manipulation.

The solution to this problem by the invention is characterized in that in a lock with a latch provided as a latch bolt with a ramp and with a ramp also provided with a ramp which actuates a locking slide blocking the bolt in the extended locking position, the ramp of the control wedge hits the striking plate arranged on the door frame when the door closes in time before the run-up slope of the bolt.

Through this inventive design of the initially described Castle it is possible to choose the one designed in the manner of a trap can be actuated electro-mechanically or purely mechanically using a key Pushing the bolt back by simply closing the door, manipulations to be excluded on the tie.

According to a further feature of the invention, the locking slide is transverse to Movement direction of latch and control wedge movable, i.e. slidable or pivotally mounted on the lock housing and with one with a Stop surface on the bolt interacting locking pin and with a Control nose provided with at least one formed on the control wedge Control curve interacts. This results in a simple construction a reliable function of the locking slide lock.

In a preferred embodiment of the invention, the blocking position of the gate valve are monitored by a limit switch.

If the lock according to the invention with an electro-mechanical actuation the by a lever against the force of a locking spring by means of a Is equipped electromagnet retractable bolt, is according to the invention proposed a trigger element movable on the bolt shaft to store, which is moved forward by the retraction lever and the the retraction movement of the latch blocking blocking slide from its Locked position transferred to a release position. This way, with simple means increases the security of the lock according to the invention.

In a preferred development of the invention, the trigger element longitudinally guided on the bolt shaft and with a stop pin for the retraction lever as well as with a control surface for one on the locking slide arranged driving pin. This will make it easy Means an inevitable interaction of these components. In a preferred embodiment, the retraction movement of the Riegel over the release element located in its rear end position causes.

Finally, the invention proposes the end positions of the Riegel also to be monitored by a limit switch.

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 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 when the door is 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 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 S1 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 electromechanical 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 electromechanical 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

switch

18th

Elbow

18a

Driving mandrel

S1

key

S2

key

a

Recess

Claims (7)

1. Lock with a bolt (2) which is actuable electromechanically, for example by means of a an electromagnet (5) or an electric motor, and/or by means of a key-actuated mechanical locking mechanism and which is designed as a latch bolt with a run-on slope (2b) and is blocked, at least in the pushed-out blocking position, by a blocking slide (11) which is itself actuable by means of a control wedge (15) guided so as to be movable parallel to the bolt (2) and likewise provided with a run-on slope (15b), characterized in that, when the door is being closed, the run-off slope (15b) of the control wedge (15) strikes a striking plate (3), arranged on the door frame (4), before the run-on slope (2b) of the bolt (2).
2. Lock according to Claim 1, characterized in that the blocking slide (11) is mounted on the lock case so as to be movable transversely to the direction of movement of the bolt (2) and control wedge (15) and is provided with a blocking peg (lla) cooperating with a stop face (projection 2d) on the bolt (2) and is provided with a control nose (1d) which cooperates with at least one control cam (15c, 15d) formed on the control wedge (15).
3. Lock according to Claim 1 or 2, characterized in that the blocking position of the blocking slide (11) is monitored by a limit switch (14).
4. Lock according to at least one of Claims 1 to 3, with electromechanical actuation of the bolt (2) capable of being drawn back by a lever (10) counter to the force of a bolt spring (9) by means of an electromagnet (5), characterized in that the bolt shank has mounted movably on it a release element (12) which is moved forwards by the drawback lever (10) and which transfers the blocking slide (11), blocking the drawback movement of the bolt (2) out of its blocking position into an enabling position.
5. Lock according to Claim 4, characterized in that the release element (12) is guided longitudinally movably on the bolt shank and is provided with a stop peg (12b) for the drawback lever (10) and with a control face (12a) for a driving pin (11b) arranged on the blocking slide (11).
6. Lock according to Claim 5, characterized in that the drawback movement of the bolt (2) is put about by the release element (12) which is in its rear end position.
7. Lock according to at least one of Claims 1 to 6, characterized in that the end positions of the bolt (2) are monitored by a limit switch (13).

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