EP1431481B1 - Lock - Google Patents

Abstract

Lock (1) comprises a lock case (3) containing a spring-loaded locking bar (6), a lock plate (2), an auxiliary latch, a cross latch having an upper (4) and a lower latch element (5), a slide (7) with a slotted link (8) and catches, and a latch nut (14) for operating the lock and actuated via a door handle. The upper latch element is arranged above the locking bar and the lower latch element is arranged below the locking bar. These elements interact with the auxiliary latch so that the locking bar expulsion is triggered only when after simultaneous actuation of the latch elements and the auxiliary latch the latch elements are moved into a pivoted position through the lock plate out of the lock case. The auxiliary latch remains actuated.

Description

The invention relates to a self-locking lock according to the preamble of claim 1.

From the DE 196 26 752 A1 to which is delimited in claim 1, a self-locking mortise lock is known, with a spring-loaded cross latch, a slide-controlled latch, an operable in the longitudinal direction of the lock by means of a key operated slide, and with a slide at rückgeschlossenem latch and pre-closed cross latch arresting, spring-loaded control part , In this case, the slide is locked at rückgeschlossenem latch and free cross latch when planting the key or lock cylinder bit on a arranged in the region of a lock cylinder contour stop.

The disadvantage here is that the mortise lock is only suitable for doors with a long lock pocket due to its dimensions, as it have metal doors. The lock can not be used in the lock pocket of a wooden door, as these doors have shorter, but deeper lock pockets. Furthermore, with the door open by manual actuation of the control part, such as children playing, the bolt exclusion can be triggered, causing the door can not be closed. This is particularly disadvantageous if the door is provided with a door drive or is controlled by a control center.

The DE 197 01 761 C1 shows a self-locking lock with a latch, a latch latch, an auxiliary latch and a slide plate, wherein the latch and the latch spring-loaded excluded and locked in the locked door and locked position, and wherein the latch with the door open and in the fully retracted position the auxiliary latch is locked over the slide plate. By pushing in the auxiliary latch when closing the door is unlocked the lock and the bolt closes. The bolt rushes when opening the door against the latch, the latch is provided with a case part, whereby the latch of the auxiliary latch lags, so that the slide plate and the latch are locked by the latch to the auxiliary latch the slide plate and thereby the bolt locked. The case part is received when closing in the latch and the latch is locked in its excluded position by the slide plate.

The disadvantage is that the lock can not be used universally in different lock pockets due to its size. Since the closed position of the door is detected only on one side by the latch, it can lead to a bolt exclusion against the strike plate, and the bolt does not close the door safely. The additional trapped trap broadening by the trap member may be vulnerable and could jam.

The invention has for its object to form a lock that can be used in an embodiment in the lock pockets of metal doors and wooden doors, secured against accidental release of the bolt, and ensures a secure engagement of the bolt in the strike plate.

The object is solved by the features of claim 1.

The subclaims form advantageous embodiments of the invention.

Self-locking locks are often used on exterior doors to ensure that a building is closed against burglary. Such locks are also designed as self-locking panic locks, which are used in escape and rescue routes. Through the panic function, the latch and latch are pulled back into the lock by depressing the door handle, allowing the previously locked door to be opened immediately.

Locks are usually made in different versions, since, for example, metal doors dimensionally have another lock pocket for receiving the lock as metal doors. Wooden doors have deep lock pockets with a lower height, while metal doors allow only a small installation depth, but a larger overall height. The lock according to the invention is designed in its dimensions so that it fits into the lock pockets of metal and wooden doors alike, since its special construction is designed for the respective smaller size of the lock pockets. This is of particular advantage because only one lock is required for different types of doors.

As is known, a lock cooperates with a strike plate arranged on the door frame, which has one or more recesses into which a catch and a bolt can engage. The known cross traps consist of two immediately adjacent arranged trap elements, which can pivot out of the forend of the castle and engage in the recess of the strike plate.

In contrast, allows the split arrangement of a cross latch with an upper latch member above and a lower latch member below the bolt centering of the lock against the strike plate, and thus a safe exclusion and engagement of the bolt in the recess of the strike plate.

The latch elements pivot out of the forend into the recess in the strike plate in such a way that the latch elements are supported on one of the opposite inner sides of the recess. Due to the arrangement of the bolt between the trapping elements and compared to the outer distance of the pivoted trapped elements smaller width of the bolt, this can exclude completely free in the strike plate. A possibly existing inclination of the striker against the lock, such as by delaying the door, can nevertheless be centered due to the distance between the upper latch member and the lower latch member.

Of particular importance in self-locking locks is that no accidental exclusion of the bolt can be done with the door open. For this purpose, an auxiliary traps is provided on such locks, which are actuated by the closing plate when the door is closed and release the bar exclusion. However, the auxiliary trap can also be operated for example by playing children, whereby the bolt exclusion is triggered and the door can not be closed thus.

The lock according to the invention therefore has a discharge safety device, which only triggers a bolt exclusion when the auxiliary latch and at the same time the latch elements were actuated, and then the latch elements have again reached the position swung out of the forend. This sequence corresponds to the closing of the door, wherein the auxiliary latch and the latch elements are pivoted by cooperation with the strike plate. After complete closing of the door, the auxiliary latch remains actuated and the latch elements engage in the recess of the striker and get into their swung-out state. Only then is the bar exclusion triggered.

The loaded by a spring latch is guided in a gate arranged in a slide. Only by releasing the sliding movement of the slider, the latch can change its position and be guided by the spring on the forend out of the lock case.

To release the sliding movement of the slider, on the one hand, the operation of the auxiliary latch is required and continue the operation of the latch elements. The slider also has a further blocking by a pivoting lever, which is released only when fully pivoted traps elements. Only this sequence releases the slide and the spring-loaded latch can be excluded, it being ensured that the door is closed and the latch is centered by the latch elements in the recess in the strike plate and thus can exclude freely. The door is locked securely.

The lock can be designed as a purely mechanical, self-locking lock and be equipped with a panic function, the lock can be unlocked from one side at any time by the operation of a pusher. From the other side opening of the lock is usually possible only by a lock cylinder, as in place of a pusher only a doorknob is mounted to prevent unauthorized access.

However, the lock can also be equipped with a split pusher which, for example, is electromagnetically actuated. This makes it possible to decouple the pusher of a lock side of the opening mechanism, whereby the access can be controlled in a secure area. This can be done by an access control, whether by a janitor or by an electronic access control system, such as smart card, code entry or fingerprint. In the case of authorized access, the two halves of the pusher nut - triggered by the electromagnet - are coupled together and the lock can also be actuated via the outer pusher. The state of the lock can be detected via switch elements and fed to a control or reporting device.

The lock can also be designed as a motor lock. In this case, a motor via a toothed belt actuate an actuating element, wherein a plurality of actuating positions are conceivable, which cause different functions of the castle. The state of the lock and the actuating element can be detected via switch elements.

Possible is about a different day and night position or a permanent open position, wherein the actuating element is brought by the engine in the respective required position. The position for controlling the motor can be detected via the switching elements. In order to allow for a day, for example, often committed door rapid access, can be waived to exclude the bolt. The latch elements can cause a lock and take over a door opener function. If the trap elements are locked, the door can not be opened, but immediately after release, whether by an electronic access control system or a gate, accessible, since the trapping elements can swing in immediately after release. A motorized latch, which always takes a certain amount of time, is eliminated, which means that access can be faster than with conventional engine locks.

For a night operation or on weekends, however, it may be necessary that the bolt excludes and secures the door burglar-resistant. For this purpose, the actuating element can be moved to a further position, whereby the bolt is excluded. For a legitimate access causes the actuator that the bolt is retracted into the lock case. After the subsequent closing of the door, a bolt can be automatically re-locked for a secure locking of the door.

In the following an embodiment in the drawing with reference to the figures will be explained in more detail.

Fig. 1

ein Schloss mit geteilter Kreuzfalle und Ablaufsicherung, geöffnet in der Seitenansicht;

Fig. 2

das Schloss nach Fig. 1, in der Ansicht auf die Stulp;

Fig. 3

das Schloss nach Fig. 1, als Motorschloss ausgebildet.

Fig. 4

das Schloss nach Fig. 3, in teilweise demontiertem Zustand, mit der Darstellung der Blockierung des Riegels bei ausgeschwenkten Fallenelementen.

Fig. 5

das Schloss nach Fig. 4, jedoch mit eingeschwenkten Fallenelementen.

Showing:

Fig. 1

a lock with split cross latch and safety valve, opened in side view;

Fig. 2

the castle after Fig. 1 , in the view on the forend;

Fig. 3

the castle after Fig. 1 , designed as a motor lock.

Fig. 4

the castle after Fig. 3 , in partially disassembled state, with the representation of the locking of the bolt with swung traps elements.

Fig. 5

the castle after Fig. 4 , but with pivoted trap elements.

In the figures, a self-locking lock 1 is shown with a face plate 2 for mounting the lock 1 in a lock pocket of a door not shown here, with a lock case 3, which is received in the lock pocket of the door. The lock case 3 is designed in its dimensions so that the lock 1 in the lock pockets of metal and wooden doors alike fits. This is of particular advantage since only one lock 1 is required for different door types. Wooden doors have deep lock pockets with a lower height. In contrast, metal doors allow only a small installation depth, but a greater height. The lock 1 is designed by its special construction on the smaller size of the lock pockets. In the Fig. 2 Face plate 2 of the lock 1 shown in the plan view is exchangeable, whereby an adaptation to different door designs is easily possible.

As is known, a lock 1 interacts with a striking plate arranged in the frame, which has one or more recesses 28 into which a catch and a bolt 6 can engage. In the Fig. 2 As a dashed lines outlined recess 28 of the locking plate not shown illustrates the optimal centering of the bolt 6. The known cross-type traps consist of two immediately adjacent arranged trap elements 4, 5, which can pivot in the plane of the faceplate 2, and swung in the state in the recess 28 engage the door frame arranged strike plate.

The split arrangement of the cross latch, with an upper latch member 4 above and a lower latch member 5 below the bolt 6, allows a centering of the lock 1 relative to the strike plate and thus a safe exclusion and engagement of the bolt 6 in the recess 28 of the strike plate. The latch elements 4, 5 thereby pivot out of the forend 2 into the recess 28 in the strike plate, so that the latch elements 4, 5 are respectively supported on one of the opposite inner sides of the recess 28. Due to the arrangement of the bolt 6 between the trapping elements 4, 5 and the smaller width of the bolt 6 compared with the outer spacing of the pivoted trapping elements 4, 5, the latter can be completely free of exclusion into the striking plate. A possibly existing inclination of the striker against the lock 1, such as by delay of the door, can still be centered due to the distance between the upper latch member 4 and the lower latch member 5.

Of particular importance in self-locking locks 1 is that no accidental exclusion of the bolt 6 can be done with the door open. For this purpose, an auxiliary latch 11 is provided on such known locks 1, which is actuated by the closing plate during closing of the door and releases the bolt exclusion. However, the auxiliary latch 11 could also be operated for example by playing children, whereby the bolt exclusion is triggered and the door can not be closed thus.

The lock 1 according to the invention has a discharge safety device, which only triggers a bar lock when the auxiliary latch 11 and at the same time the latch elements 4, 5 have been actuated and then the latch elements 4, 5 have again reached the position swung out of the forend 2. This sequence corresponds to the closing operation of the door, wherein the auxiliary latch 11 and the latch elements 4, 5 are pivoted by cooperation with the striking plate. After complete closing of the door, the auxiliary latch 11 is actuated, the latch elements 4, 5, however, engage in the recess of the strike plate and get into its swung-out state. Only then is the bar exclusion triggered.

The loaded by the spring 15 latch 6 is guided in the arranged in the slide 7 scenery 8, as shown in the FIGS. 1 and 3 is shown. By releasing the sliding movement of the slider 7, the bolt 6 can change its position, and are guided by the spring 15 on the forend 2 out of the lock case 3. To release the sliding movement of the slider 7, on the one hand, the operation of the auxiliary latch 11 is required, the lock 12 comes out of engagement with the arranged on the slide 7 auxiliary latch 13 catch. Furthermore, the locking pin 9 arranged on the rocker 21 of the lower latch element 5 is in engagement with the latch catch 10. The locking bolt 9 releases the slide 7 only when the latch elements 4, 5 are swung out. The latch elements 4.5 are operatively connected to each other via the rockers 21 and can only be pivoted together, as is the case Fig. 4 is apparent. If the latch elements 4, 5 are pivoted in, the return element 22, which is in operative connection with the latch lock 23, is pivoted so that the translator 24 engages with a Retaining pin 26 is held in a retaining cam 27 of the return member 22. As a result, the translator 24 and the slide 7 is blocked, since the slider 24 arranged on the translator pin 25 engages in a recess on the slide 7. If the latch elements 4, 5 are completely swung out, the latch lock 23 slides between the two rockers 21. The return element 22 can pivot, and the retaining cam 27 releases the translator 24 and via the slide bolt 25 the slide 7. The spring-loaded latch 6 can move the slider 7 along the gate 8 and exclude.

The lock 1 can be designed as a purely mechanical, self-locking lock and be equipped with a panic function, the lock 1 can be unlocked from one side at any time by the operation of a pusher. From the other side opening of the lock is usually only possible via the lock cylinder 16, since instead of a pusher only a doorknob is mounted.

However, it may also be equipped with a split pusher 14, which is electromagnetically actuated. This makes it possible to decouple the pusher of a lock side of the opening mechanism, whereby the access can be controlled in a secure area. This can be done by an access control, whether by a janitor or by an electronic access control system, such as smart card, code entry or fingerprint. With legitimate access, the two halves of the pusher nut 14 - triggered by the electromagnet - coupled together, and the lock 1 can also be operated via the outer pusher. The state of the lock 1 can be detected via switch elements 19 and fed to a control or signaling device.

Another embodiment of the lock 1 is a motor actuated, which from the FIGS. 3 to 5 is apparent. In this case, a motor 17 via a toothed belt 18 actuate an actuator 20. There are several operating positions conceivable, which cause different functions of the lock 1. Of the State of the lock 1 and the actuating element 20 can be detected via the switch elements 19.

It is conceivable different day and night position, wherein the actuator 20 is brought by the motor 17 in the respective required position, wherein the position for controlling the motor 17 via the switching elements 19 is detected. In order to allow for a day, for example, often committed door rapid access, can be waived to exclude the bolt 6, since the latch elements 4, 5 cause a lock and can take over a door opener function. If the latch elements 4, 5 are locked, the door can not be opened, but is accessible immediately after release, whether by an electronic access control system or a gate, since the latch elements 4, 5 pivot in directly. A motorized latch, which always takes a certain amount of time, is eliminated, which means that access can be faster than with conventional engine locks.

At night or on weekends, however, it is necessary that the bolt 6 excludes and secures the door burglar-resistant. This can be done by a motorized displacement of the actuating element 20 in a further position, wherein the bolt 6 is excluded via the slide 8 in the slide 6. For a legitimate access the bolt 6 is retracted along the gate 8 by the actuator 20 in the lock case 3 again. After the subsequent closing of the door is again a bolt exclusion for securely locking the door.

List of reference characters

1

lock

2

stulp

3

lock case

4

upper trap element

5

lower trap element

6

bars

7

pusher

8th

scenery

9

locking pin

10

case screening

11

auxiliary latch

12

barrier

13

Auxiliary latch case

14

follower

15

feather

16

lock cylinder

17

engine

18

toothed belt

19

switch Components

20

actuator

21

seesaw

22

return element

23

case lock

24

translator

25

slide pin

26

Retention pin

27

Retaining cams

28

Recess of the striking plate

Claims (9)

1. Lock (1), having a lock case (3), having a lock case front (2), having a spring-loaded bolt (6) arranged in the lock case (3), having an auxiliary latch (11) and having a cross latch, wherein the cross latch has an upper latch element (4) and a lower latch element (5), having a slide (7) provided with a guide element (8) and catches (10), wherein bars (12) for controlling the outward movement of the bolt engage in the catches (10), and having a handle follower (14), which can be actuated by way of a door handle and is used to actuate the lock (1),
   characterized
   in that
   the upper latch element (4) of the cross latch is arranged above the bolt (6) and the lower latch element (5) is arranged below the bolt (6), and these latch elements are operatively connected to the auxiliary latch (11) such that the outward movement of the bolt is triggered only when, following simultaneous actuation of the latch elements (5, 6) and of the auxiliary latch (11), the latch elements (5, 6) of the cross latch have reached the position in which they have been pivoted out of the lock case (3) via the lock case front (2), wherein the auxiliary lock (11) remains actuated.
2. Lock according to Claim 1,
   characterized in that the upper latch element (4) and the lower latch element (5) are stiffened when the leaf is in the closed position and the handle follower (14) is not actuated.
3. Lock according to Claim 2,
   characterized in that the stiffened latch elements (4, 5) centre the lock (1) with respect to a strike plate and the bolt (6) can move freely outwards into a cutout (28) in the strike plate.
4. Lock according to Claim 1,
   characterized in that the outward movement of the bolt (6) is controlled by virtue of the bolt (6) being guided in a guide element (8) of the slide (7).
5. Lock according to Claim 1,
   characterized in that the handle follower (14) is a split handle follower and can be coupled electromagnetically.
6. Lock according to Claim 1,
   characterized in that the lock (1) has an actuating element (20) by means of which the latch elements (4, 5) and the bolt (6) can be actuated.
7. Lock according to Claim 6,
   characterized in that the actuating element (20) is actuated by a motor (17).
8. Lock according to Claim 6,
   characterized in that the cross latch performs the function of a door opener, wherein the actuating element (20) guides the slide (7) into an intermediate position.
9. Lock according to Claim 1,
   characterized in that the lock (1) has switch elements (19) for control purposes and state feedback.

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