EP1816289B1 - Lock - Google Patents

Abstract

The lock has a spring loaded locking bar (6) that is arranged in a lock casing (3). A slider is provided with a connecting link and notches. A locking unit (18) is engaged into the casing, and a depressor follower (16) for actuating the lock is actuatable by a door pusher. A bistable actuator (17) is provided for controlling of locking function, where deviation of upper and lower latch units (4, 5) in the lock casing is enabled by the actuator in a power-off condition.

Description

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

From the DE 102 61 129 A1 a lock is known, with a lock case, a cuff, with a arranged in the lock case, spring-loaded latch, an auxiliary latch, with an upper and a lower latch member, with a provided with a backdrop and with catches slider, with locks for controlling the bar exclusion in engage the detents, and with an operable via a door handle follower for actuating the lock. In this case, the upper trapping element above the bolt and the lower trapping element is arranged below the bolt, which are so operatively connected to the auxiliary latch that the bolt exclusion is triggered only if, after simultaneous operation of the trapping elements and the auxiliary trap the trapping elements in their over the forend from the lock case pivoted position have arrived. The lock can be controlled by motor depending on a release, for example by an access control system, pull the latch and release the trapping elements.

In detention centers, psychiatric clinics or even department stores, electrical locking elements are often attached to the doors to ensure controlled use, with the lock being releasable in an emergency. Even in the event of a power failure, it must be ensured that the door is released. A motorized locking according to DE 102 61 129 A1 can not be used as a lock on such doors in escape and rescue routes, as in case of power failure, the release of the castle, and thus the ability to open the door is not given.

The invention has for its object to form a lock which is electrically lockable, wherein in the de-energized state, the door is released.

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. The panic function, by pressing down on the door handle, retracts the latch and latch into the lock, allowing the previously locked door to be opened immediately.

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.

In the known locks with mutually pivotable latch elements they pivot out of the forend of the lock out in the recess of the strike plate. In particular, in an arrangement with a trapping element above and a trapping element below the bolt, a centering of the lock against the strike plate, whereby a safe exclusion and engagement of the bolt is achieved in the recess of the strike plate. These self-locking locks often have a flow control that prevents unintentional exclusion of the bolt with the door open. For this purpose, an auxiliary trap is provided on such locks, which is actuated by the closing plate when closing the door, the bolt exclusion is only released when the trapping elements have reached the swung-out position of the forend. This ensures 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 operated via the outer pusher. The state of the lock can be detected via switch elements and fed to a control or reporting device.

Due to the panic function of the lock, the door can be opened at any time to leave a building or a protected area. However, this is often desired only in a controlled manner, for example in prisons or psychiatric clinics. Therefore, additional locking elements are attached to these doors, which can be actuated by a fire alarm system or by an emergency switch. These are, for example, electromagnetic holding plates or door openers, which are installed so that the door is released in the direction of escape. Also in department stores, the operation of an emergency button to open the door is desired to increase the threshold for improper operation of the door and the use of an emergency exit.

By the lock of the invention, the complex installation of an additional lock on the door is no longer necessary.

According to the invention, the lock is already provided with an electrically operable actuating element, which prevents pivoting of the latch elements in the energized state. The actuator may be an electromagnet or another type of actuator, such as a piezoelectric actuator. In this case, a blocking element of the actuator, for example an armature of the electromagnet, engages in the pivoting region of the trapping elements, or an element cooperating with the trapping elements and thus prevents the trapping of the trapping elements. The actuator may have a blocking element, which is held against the force of a spring when the actuator is energized in the latching elements blocking position, or is held directly in the blocking position.

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

Fig. 1

ein Schloss mit elektromagnetischen Betätigungselement, geöffnet, in der Seitenansicht;

Fig. 2

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

Fig. 2

das Schloss nach Fig. 3, in teilweise demontiertem Zustand, mit der Darstellung der Blockierung der ausgeschwenkten Fallenelemente.

Showing:

Fig. 1

a lock with electromagnetic actuator, opened, in side view;

Fig. 2

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

Fig. 2

the castle after Fig. 3 , in partially disassembled condition, with the representation of the blocking of the swung-out 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 fits equally into the lock pockets of metal and wooden doors. Therefore, only one lock 1 is advantageous for different types of doors required. 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 a frame, which has one or more recesses 19 into which a latch and a bolt 6 can engage. In the Fig. 2 As a dashed lines sketched recess 19 of the locking plate not shown illustrates the optimal centering of the bolt. 6

The split arrangement with a trapping element 4 above and a trapping element 5 below the bolt 6 in the manner of a known cross latch, 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 19 of the strike plate. By "exclusion" is meant the displacement of the bolt from the lock housing beyond the stub. The latch elements 4, 5 thereby pivot out of the forend 2 into the recess 19 in the strike plate, so that the latch elements 4, 5 are each supported on one of the opposite inner sides of the recess 19. Due to the arrangement of the bolt 6 between the latch elements 4, 5 and with respect to the outer distance of the pivoted latch elements 4, 5 smaller width of the bolt 6, this can exclude completely free in the strike 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 trap 9 is provided on such known locks 1, which is actuated by the closing plate when the door is closed and releases the bar lock. However, the auxiliary latch 9 could also be operated, for example, by playing children, whereby the bolt exclusion is triggered, and thus the door can not be closed.

The lock 1 has a discharge safety device, which only triggers a bolt exclusion when the auxiliary latch 9 and at the same time the latch elements 4, 5 were actuated and then the latch elements 4, 5 again reached the position pivoted out of the forend 2. This sequence corresponds to the closing operation of the door, wherein the auxiliary latch 9 and the latch elements 4, 5 are pivoted by cooperation with the strike plate. After complete closing of the door, the auxiliary latch 9 remains actuated, the latch elements 4, 5, however, engage in the recess of the striking plate and reach their pivoted state. Only then is the bar exclusion triggered.

The spring-loaded latch 6 is guided in the arranged in the slider 7 scenery 8, as it is in FIG. 1 is shown. By releasing the sliding movement of the slider 7, the latch 6 can change its position and be guided beyond the face plate 2 out of the lock case 3. To release the sliding movement of the slider 7, the operation of the auxiliary latch 9 is required, on which a catch is arranged, which cooperates with the slide 7.

The latch elements 4, 5 interact with the rockers 10 and can only be pivoted together, the slider 7 is only released when the latch elements 4, 5 are swung out. If the latch elements 4, 5 are pivoted in, then the return element 12, which is in operative connection with the latch lock 11, is pivoted such that the translator 13 is held thereon. As a result, the translator 13 and the slide 7 is blocked, since the slider 13 arranged on the bolt 14 engages in a recess on the slide 7. If the latch elements 4, 5 are completely swung out, the latch lock 11 slides between the two rockers 10. The return element 12 can pivot, and releases the translator 13 and the slider 7 via the slide pin 14. 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 15, since instead of a pusher only a doorknob is mounted.

However, it may also be equipped with a split pusher 16, 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 follower 16 - triggered by the electromagnet - coupled together, and the lock 1 can also be operated via the outer handle. The state of the lock 1 can be detected via switch elements and fed to a control or signaling device.

Due to the panic function of the lock 1, the door can be opened at any time to leave the area. However, since this is often desired only controlled, escape doors are often provided with additional locks, such as electromagnetic holding plates or a door opener which is arranged to open in the direction of escape.

According to the invention, the lock 1 is therefore advantageously already provided with an electrically actuatable actuator 17, which prevents pivoting of at least one of the latch elements 4, 5 in the energized state. The actuator 17 may be an electromagnet or another type of actuator, such as a piezoelectric actuator. In this case, a blocking element 18 of the actuator 17, for example, an armature of the electromagnet, engages in the pivoting range of the rockers 10 and thus prevents the pivoting of the latch elements 4, 5, as it is known from Fig. 3 is apparent. However, the actuator can also act on the latch 11 or a cooperating with this element, such as the translator 13, whereby a displacement of the latch 11 for releasing the rockers 10 and thus the latch elements 4, 5 can be controlled.

The actuator 17 is active in the latching elements 4, 5 blocking position, ie energized, whereby in case of power failure, a release of the trap elements is done and the panic function is guaranteed.

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

auxiliary latch

10

seesaw

11

case lock

12

return element

13

translator

14

slide pin

15

lock cylinder

16

follower

17

actuator

18

blocking element

19

recess

Claims (4)

1. Lock, comprising a lo ck case, comprising a face plate, comprising a spring -loaded bolt which is arranged in the lock case, an auxiliary catch and at least one catch element, comprising a slide which is provided with a slotted guide and with notches, with pawls for controlling lock-out extension of the bolt engaging in the notches, comprising a handle follower, which can be operated by means of a door handle, for operating the lock, and comprising an electrical operating element for controlling lock functions,
   characterized
   in that the lock has, as an electrical operating element, a bistable actuator (17) by means of which pivoting of the catch element (4, 5) into the lock case (3) is enabled in the current -free state of the said actuator.
2. Lock according to Claim 1,
   characterized in that the actuator (17) acts on a component which interacts with the catch element ( 4, 5), such as the rocker (10), the catch pawl (11) or the return element (12), in order to control pivoting of the catch element (4, 5).
3. Lock according to Claim 2,
   characterized in that the actuator (17) interacts with the catch element (4, 5), or with components which are operatively connected to the s aid catch element, such that the catch element ( 4, 5) is released when no current is applied to the actuator (17).
4. Lock according to Claim 1,
   characterized in that the actuator (17) is connected to the catch element (4, 5) and draws the said catch element into the lock housing (1) when no current is applied to the actuator (17).

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