CN108222700B

CN108222700B - Locking device for a two-leaf door

Info

Publication number: CN108222700B
Application number: CN201711333471.4A
Authority: CN
Inventors: J·勒克尔; S·舒恩
Original assignee: Geze GmbH
Current assignee: Geze GmbH
Priority date: 2016-12-14
Filing date: 2017-12-14
Publication date: 2020-02-21
Anticipated expiration: 2037-12-14
Also published as: CN108222700A; EP3336289A1; DE102016225000A1; DE102016225000B4; EP3336289B1

Abstract

The invention relates to a locking device (1) for a double door, comprising a lock housing (10) having a bolt (14) and a catch (20) having a closure plate (22.1), which secures the bolt in an extended locking state against a transition into an extended locking state, in which the bolt engages at least partially in the closure plate, and a catch (20) having a closure plate (22.1), wherein an unlocking element (14.1) guided in the bolt lifts the catch of the bolt and a first actuating element (24) moves the bolt from the extended locking state into an extended locking state, in which the bolt releases the closure plate, by actuating the catch to implement an emergency escape function, and to a double door comprising such a locking device. According to the invention, the unlocking element is completely inserted into the bolt in the direction of the buckle box, independently of the closed state of the bolt, and by actuating the buckle box to perform the emergency escape function, a second actuating element (24.1) provided in the buckle box moves the unlocking element in the direction of the locking element and lifts the locking element of the bolt.

Description

Locking device for a two-leaf door

Technical Field

The present invention relates to a locking device for a double door and a corresponding double door comprising such a locking device.

Background

In order for the locking tongue of the extended locking of the movable leaf not to tilt in the closure flap of the stationary leaf, when the handle (Dr ü cker) of the stationary leaf and/or the emergency escape lever is actuated, the locking tongue must be moved from the extended locking position into the extended locking position by special mechanical means in the catch box of the stationary leaf.

DE102009003860B4 discloses an emergency escape lock with a bolt which can be locked forward and backward in a bolt displacement direction, in particular by a locking element of a lock cylinder, which bolt is held in a pre-locked position by a tumbler and carries a trigger which can be displaced in the bolt displacement direction and which releases the tumbler when a displacement in the bolt backward locking direction is brought about by loading a front edge thereof, in order to enable a backward displacement of the bolt. The bolt forms in the region of its end face a recess which is open from its end face on both sides towards the end face of the bolt, in which recess the trigger is placed, wherein the recess is open towards both broad sides of the bolt and the front edge has to be displaced into the recess beyond the edge which is located in the end face of the bolt in order to release the tumbler, so that the front edge of the trigger is located in the recess when the tumbler is released.

EP0902141a1 discloses an emergency escape lock with a housing, a tumbler for a latch arranged therein, and a trigger cam guided in the latch in a locking direction. The trigger projection is locked in the case of the bolt extension-locked and extension-locked by at least one projection provided on the tumbler. Furthermore, the trigger cam and the tumbler are arranged in the same plane, wherein the tumbler has, on its edge facing the bolt, a hook-shaped projection which engages in a corresponding recess of the trigger cam when the bolt is locked and a guide cam which is guided on a control curve of the trigger cam. When the outer handle of the stationary leaf is actuated, a trigger projection projecting beyond the front edge of the latch is pressed into the latch by a counter latch provided in the catch box of the stationary leaf and lifts the tumbler in the closed position, so that the latch can be pressed into the housing by the counter latch until the tumbler falls into its closed position.

Disclosure of Invention

The object of the present invention is to provide a locking device for a double door and a corresponding double door, which allow improved protection against breaking and/or theft with the same emergency escape function.

To this end, the invention proposes a locking device for a two-leaf door, comprising a lock case with a bolt and a catch, and a buckle case with a closure, which secures the bolt in an extended locking state against a transition into an extended locking state in which the bolt engages at least partially in the closure, wherein, by actuating the buckle case to implement an emergency escape function, an unlocking element guided in the bolt lifts the catch of the bolt and a first actuating element transfers the bolt from the extended locking state into an extended locking state in which the bolt releases the closure, wherein the unlocking element engages completely in the bolt in the direction of the buckle case independently of the closed state of the bolt, wherein, by actuating the buckle case to implement the emergency escape function, a second actuating element provided in the clasp box moves the unlocking element in the direction of the catch and lifts the catch of the bolt, characterized in that the second actuating element is guided axially movably in the first actuating element, wherein the first actuating element can be moved between a starting position and an end position, wherein the second actuating element protrudes beyond the first actuating element in the direction of the bolt until the end position is reached and acts on the unlocking element through an opening in the bolt before the first actuating element touches the bolt.

The invention further provides a double door comprising a moving leaf and a stationary leaf and a locking device comprising a lock case with a bolt and a catch, which secures the bolt in an extended locked state against a transition into an extended locked state in which the bolt engages at least partially in the closure, and a buckle case with a closure, wherein an unlocking element guided in the bolt lifts the catch of the bolt and a first actuating element transfers the bolt from the extended locked state into the extended locked state in which the bolt releases the closure and the door is unlocked, wherein the locking device is designed according to the invention, and wherein the buckle case is actuated to perform an emergency escape function.

An embodiment of the locking device according to the invention for a two-leaf door comprises a lock case with a bolt and a catch, as well as a strike case with a blind, which catch secures the bolt in the extended locked state (ausgeschlossen) in order to prevent a transition to the extended locked state (eingeschlossen), in which the bolt engages at least partially in the blind.

By actuating the catch box to perform the emergency escape function, the unlocking element guided in the bolt lifts the catch of the bolt and the first actuating element moves the bolt from the extended locked state, in which the bolt releases the closure flap, into the extended locked state. According to the invention, the unlocking element is completely inserted into the bolt in the direction of the catch box, independently of the closed state of the bolt, wherein a second actuating element provided in the catch box moves the unlocking element in the direction of the catch part and lifts the catch part of the bolt by actuating the catch box to perform the emergency escape function.

Furthermore, a double door is proposed, comprising a moving leaf and a stationary leaf and a locking device of this type, which comprises a lock case with a locking tongue and a catch, and a strike case with a closure flap, the catch securing the locking tongue in the extended locked state against shifting into the extended locked state, in which the locking tongue engages at least partially in the closure flap. By actuating the buckle box to perform an emergency escape function, an unlocking element guided in the bolt lifts a catch of the bolt and a first actuating element transfers the bolt from an extended locked state, in which the bolt releases the closure and the door is unlocked, into an extended locked state.

In one embodiment of the invention, the unlocking element does not protrude from the bolt in the direction of the buckle housing, but is embedded in the body of the bolt. In this way, an unauthorized lifting of the locking element of the locking bolt can be prevented or at least made difficult in an advantageous manner. This has an advantageous effect in terms of protection against theft, so that the embodiment of the locking device according to the invention can be classified into a higher security class. As an additional advantage, the unlocking element embedded in the bolt does not have to be pulled in into the locked bolt in order to prevent a collision with the closure. This additional mechanism is omitted in the integrated unlocking element.

In a preferred embodiment of the double door according to the invention, the lock case with the locking tongue and the locking element can be arranged on the moving leaf and the catch case with the closure flap can be arranged on the stationary leaf. The handle of the stationary leaf and/or the emergency escape lever for carrying out the emergency escape function can act via at least one pivoting wing on the first actuating element and actuate the catch box, which then actuates the lock box of the movable leaf in order to unlock the door. The handle of the movable fan for performing the emergency escape function and/or the emergency escape lever may act on the lock member and the latch bolt and directly operate the lock case. Accordingly, embodiments of the present invention provide a double door having a full emergency escape function, which can be unlocked and opened not only by a handle of a movable leaf and/or an emergency escape bar but also by a handle of a stationary leaf and/or an emergency escape bar in a locked state.

In a preferred embodiment of the locking device according to the invention, the blocking element can be designed as a blocking element which can be fixedly connected to the movable lock slide and which, in the extended locked state of the locking tongue, forms a stop for the locking tongue. The unlocking element can be designed, for example, with an inclined actuating portion which can lift the blocking element up against an inclined surface of the locking bolt. In this way, an inexpensive and simple mechanical device for releasing the catch of the locking bolt can be realized in an advantageous manner. In order to improve the guidance, the lock guide can have a guide element which, during the transition of the locking bolt into the extended locking state, rests against a contour of the locking bolt and can be moved perpendicular to the locking bolt up to a stop. In this way, the locking bolt can be advantageously prevented from further movement beyond the extended locking position.

In an advantageous embodiment of the locking device, the second actuating element is guided in the first actuating element so as to be axially movable. The first actuating element can be moved between a starting position and an end position, wherein the second actuating element can project beyond the first actuating element in the direction of the bolt until the end position is reached and acts on the unlocking element through the opening in the bolt before the first actuating element touches the bolt. In this way, it can be advantageously ensured that the blocking element of the locking bolt is lifted before the first actuating element acts on the locking bolt over the entire surface and transfers the locking bolt from the extended locking state into the extended locking state. The first actuating element is supported in its entirety on the end face of the bolt, so that a high safety against a return movement can be advantageously achieved. Furthermore, the first actuating element can completely accommodate the second actuating element when reaching its end position, wherein the end position of the first actuating element corresponds to the extended locking state of the locking bolt. The first actuating element may be configured, for example, as a slide and the second actuating element may be configured, for example, as an actuating pin, which is axially movably guided in a corresponding recess in the slide.

In an alternative embodiment of the locking device, the second actuating element and the first actuating element can be connected to one another.

The first actuating element can be pivoted between a starting position and an end position, wherein the second actuating element can project beyond the first actuating element in the direction of the bolt until the end position is reached and acts on the unlocking element through the opening in the bolt before the first actuating element touches the bolt. In this way, it can be advantageously ensured that the blocking element of the locking bolt is lifted before the first actuating element acts with the bearing region on the locking bolt and transfers the locking bolt from the extended locking state into the extended locking state. The second actuating element can be designed, for example, as an actuating projection which is integrally formed on the first actuating element. In this way, a particularly cost-effective and simple mechanical device for actuating the unlocking element and the locking tongue can be realized in an advantageous manner. Furthermore, the locking tongue can have a recess at the end facing the first actuating element, which recess can advantageously enlarge the range of rotation of the pivotable first actuating element, upwards and/or downwards.

In an advantageous embodiment of the two-leaf door according to the invention, the handle of the stationary leaf and/or the emergency escape lever can act on the first actuating element, which is designed as a slide, for example, via two pivoting levers and actuate the catch box. Alternatively, the handle of the fixed leaf and/or the emergency escape lever can act only on the deflecting wing, wherein the first actuating element is configured as an arm of a pivoting lever and can actuate the buckle box.

Drawings

Embodiments of the invention are explained in detail below with the aid of the figures.

In the drawings:

fig. 1 shows a schematic view of a detail of a double door with a first exemplary embodiment of a locking device according to the invention in the locked extended locked state;

fig. 2 shows a schematic illustration of the first and second actuating elements and the latch bolt of the locking device according to the invention from fig. 1 in the locked extended locked state;

fig. 3 shows a schematic illustration of the locking device according to the invention in fig. 1 without the housing and the locking bar in the locked extended locked state before actuation of the unlocking element;

fig. 4 shows a schematic illustration of the first and second actuating elements and the latch bolt of the locking device according to the invention from fig. 1 in the locked extended locked state before the actuation of the unlocking element;

FIG. 5 shows the locking device of FIG. 1 without the housing and the lock guide plate in an extended locked state with the locking member raised;

fig. 6 shows a schematic illustration of the first and second actuating elements and the bolt of the locking device according to the invention from fig. 1 in the extended locked state with the raised blocking element;

fig. 7 shows a schematic view of the locking device according to the invention from fig. 1 without the housing and the locking bar in the transition from the extended locking state into the extended locking state;

fig. 8 shows a schematic illustration of the first and second actuating elements and the bolt of the locking device according to the invention from fig. 1 in the transition from the extended locking state into the extended locking state;

FIG. 9 shows the locking device of FIG. 1 without the housing and the lock guide in an extended locked state;

fig. 10 shows a schematic illustration of the first and second actuating elements and the bolt of the locking device according to the invention from fig. 1 in the extended locking state;

FIG. 11 shows a schematic view of a second embodiment of the latching device according to the invention in the latched extended locked state without the housing and the lock guide plate;

fig. 12 shows the locking device according to the invention from fig. 11 without the housing and the locking bar in the locked extended locked state before actuation of the unlocking element;

FIG. 13 shows the locking device of FIG. 11 without the housing and lock guide plate in an extended locked state with the locking member raised; and is

Fig. 14 shows a schematic illustration of the locking device according to the invention in fig. 11 without the housing and the locking bar in the extended locking state.

Detailed Description

As can be seen from fig. 1 to 14, the double door in the exemplary embodiment shown comprises a movable leaf 3 and a stationary leaf 5 and a

locking device

1, 1A. The

locking device

1, 1A comprises a lock case 10 with a locking bolt 14 and a blocking element, which is embodied in the illustrated embodiment as a blocking element 16.1. The blocking element secures the bolt in the extended locking state 14 shown in fig. 1 to 4, 11 and 12 against shifting into the extended locking state. The

locking device

1, 1A furthermore comprises a buckle housing 20 with a closure plate 22.1, into which the locking tongue 14 engages at least partially in the extended locked state. By actuating the buckle housing 20 to perform the emergency escape function, the unlocking element 14.1 guided in the locking tongue 14 releases the locking of the locking tongue 14, and the

first actuating element

24, 24A moves the locking tongue 14 from the extended locked state into the extended locked state, in which the locking tongue 14 releases the closure flap 22.1 and the door is unlocked. The reach-in locked condition is shown in fig. 9, 10 and 14.

According to the invention, the unlocking element 14.1 is completely inserted into the locking tongue 14 in the direction of the buckle housing 20, independently of the closed state of the locking tongue 14, wherein, by actuating the buckle housing 20 to perform the emergency escape function, a second actuating element 24.1, 24.1A provided in the buckle housing 20 moves the unlocking element 14.1 in the direction of the blocking element and releases the blocking of the locking tongue 14.

As can be further seen from fig. 1, a lock case 10 with a locking tongue 14 and a locking element, which is arranged inside the housing 12, is arranged on the movable leaf 3. A catch box 20 with a housing 22, the wall of which facing the lock box 10 is designed as a closure plate 22.1, is arranged on the stator leaf 5. The cover plate 22.1 has openings, not shown in detail, for engaging the locking bolt 14 and the double acting bolts 7, 9. Here, the first double acting bolt 7 is arranged above the bolt 14 and the second double acting bolt 9 is arranged below the bolt. The handle of the fixed leaf 5, not shown in detail, for carrying out the emergency escape function and/or the emergency escape lever, not shown in detail, act on the

first actuating element

24, 24A and actuate the buckle box 20, which then actuates the lock box 10. The handle of the movable fan 3, which is not shown in detail, for carrying out the emergency escape function and/or the emergency escape lever, which is not shown in detail, act on the blocking element and the locking bolt 14 and directly actuate the lock case 10. Thus, the double door can be unlocked and opened in the locked state by the emergency escape function not only by the handle of the movable leaf 3 and/or the emergency escape bar but also by the handle of the stationary leaf 5 and/or the emergency escape bar.

As can be further seen from fig. 1 to 14, the blocking element is designed as a blocking element 16.1 which is fixedly connected to a movable, transparent lock slide 16 and, in the extended locked state of the locking tongue 14, forms a stop for the locking tongue 14. The lock guide 16 is mounted movably in the housing 12 of the lock case 10 and can be moved perpendicular to the sliding movement of the locking bolt 14 in order to raise the locking element. In the illustrated embodiment, the sliding movement of the locking bolt 14 extends horizontally and the movement of the lock guide 16 extends vertically upward. It goes without saying that other embodiments suitable for the locking of the locking tongue 14 can also be used by the person skilled in the art.

As can be seen further from fig. 1 to 14, the locking tongue 14 has, at its end facing the locking part, an inclined portion 14.2 and a shoulder against which the locking element 16.1 rests. The unlocking element 14.1 has, at its end facing the locking part, an actuating inclined part which, when the unlocking element 14.1 is moved in the direction of the locking part, emerges from an opening at the lower end of the inclined surface 14.2 of the locking bolt 14 and lifts the locking element 16.1 up against the inclined surface of the locking bolt. The lock slide 16 is thereby likewise moved upwards. In addition, in the exemplary embodiment shown, the lock slide 16 has a guide element 16.2, which is likewise fixedly connected to the lock slide 16 and which, by means of the movement, bears upwards against an inclined contour 16.3 of the locking tongue 14. During the transition of the locking bolt 14 from the extended locking state into the extended locking state, the contour 16.3 of the locking bolt 14 guides the guide element 16.2, so that the lock slide 16 moves further upward perpendicular to the locking bolt 14 until a stop, not shown in detail, is reached and the locking bolt 14 assumes the extended locking state. In this way, the locking bolt 14 can be advantageously prevented from further movement beyond the extended locking position.

As can be further seen from fig. 1 to 10, the second actuating element 24.1 is in the illustrated first exemplary embodiment of the locking device 1 designed as an actuating pin and is guided axially movably in the first actuating element 24 designed as a slide. In the first illustrated embodiment of the locking device 1, the first actuating element 24 embodied as a slider is movable between a starting position and an end position by means of two pivot levers 26, which are each mounted pivotably about a respective pivot axis 26.1 in the housing 22 of the magazine 20 and are each coupled at one end to the first actuating element embodied as a slider 24. The other ends of the pivot levers 26 are each coupled to a handle, not shown in detail, of the stationary fan 5 and/or to an emergency escape lever, not shown in detail. Furthermore, the second actuating element 24.1, which is designed as an actuating pin, projects beyond the first actuating element 24, which is designed as a slider, in the direction of the locking bolt 14 until the end position is reached. The second actuating element 24.1, which is designed as an actuating pin, can therefore act on the unlocking element 14.1 through the opening of the bolt 14 before the contact section 24.2 of the first actuating element 24, which is designed as a slider, touches the bolt 14 and releases the locking of the bolt 14. The second actuating element 24.1 acts on the L-shaped end region 14.5 of the unlocking element 14.1, wherein the end region 14.5 is supported on a return spring 14.4 which acts on the second actuating element 24.1. The first actuating element 24, which is designed as a slide, when it reaches its end position, which corresponds to the extended locked state of the locking bolt 14, fully accommodates the second actuating element 24.1, which is designed as an actuating pin. In the first exemplary embodiment shown, the first actuating element 24 is configured as a slide and the second actuating element 24.1 is configured as an actuating pin.

It goes without saying that other embodiments for the first actuating element 24 and the second actuating element 24.1 can also be used by the person skilled in the art.

As can be further seen from fig. 1 and 2, the blocking element 16.1 of the lock slide 16 secures the extended-locking bolt 14 in the illustrated latched state of the double door against manual movement back into the extended-locking state.

As can be further seen from fig. 3 and 4, the catch box 20 in the fixed leaf 5 is operated by means of a handle, which is not marked in detail, and/or an emergency escape lever, which is not marked in detail. In this way, the two pivot levers 26 are each pivoted about the respective pivot axis 26.1 and the first actuating element 24, which is designed as a slide, is moved with the abutment section 24.2 and the second actuating element 24.1, which is designed as an actuating pin, onto the projecting, locked bolt 14.

As can be seen further from fig. 5 and 6, the buckle housing 20 in the fixed leaf 5 is further actuated by means of a handle, not shown in detail, and/or an emergency escape lever, not shown in detail, and the second actuating element 24.1, which is embodied as an actuating pin, in the buckle housing 20 is moved further in the direction of the locking tongue 14 and into the opening of the locking tongue 14 by means of the pivot lever 26 and the first actuating element 24, which is embodied as a slider. As a result, the unlocking element 14.1 is moved against the force of the return spring 14.4 in the direction of the locking element 16.1, so that it is lifted along with the lock slide 16. The locking bolt 14 is thereby released for the purpose of being transferred into the extended locking state. As can be seen further from fig. 5 and 6, the first actuating element 24, which is designed as a slider, rests with its resting section 24.2 flat against the end face of the locking tongue 14 after the locking of the locking tongue 14 has been released.

As can be seen further from fig. 7 and 8, the buckle housing 20 in the fixed leaf 5 is further actuated by means of a handle, not shown in detail, and/or an emergency escape lever, not shown in detail, and the first actuating element 24 in the buckle housing 20, which is designed as a slider, is moved further by means of the pivot lever 26 and moves the locking tongue 14 further back in the direction of the locking position, wherein the second actuating element 24.1, which is designed as an actuating pin, also projects into the locking tongue 14.

As can be seen further from fig. 9 and 10, the buckle housing 20 in the fixed leaf 5 is further actuated by means of a handle, not shown in detail, and/or an emergency escape lever, not shown in detail, and the first actuating element 24, which is embodied as a slider, in the buckle housing 20 is moved further by means of the pivot lever 26 and moves the locking tongue 14 further back in the direction of the insertion into the locked state. Before the end position of the first actuating element 24 embodied as a slide is reached, the second actuating element 24.1 embodied as an actuating pin is locked in the magazine 20, while the first actuating element 24 embodied as a slide in the magazine 20 is moved further in the direction of the end position. As a result, the second actuating element 24.1, which is designed as an actuating pin, is not engaged with the locking bolt 14 and the unlocking element 14.1 is moved back by the return spring 14.4 into the starting position, so that the L-shaped end region 14.5 is closed by the end face of the locking bolt 14. The locking tongue 14 latches in the extended locking state, so that the fixed leaf 5 and/or the movable leaf 3 can be opened.

As can be further seen from fig. 11 to 14, the second actuating element 24.1A is embodied in the illustrated second exemplary embodiment of the locking device 1A as an actuating projection which is connected to the first actuating element 24A. In the exemplary embodiment shown, the first actuating element 24A and the second actuating element 24.1A are formed in one piece, wherein the second actuating element 24.1A, which is formed as an actuating projection, is integrally formed on the first actuating element 24A. The first actuating element 24A in the second illustrated embodiment forms the arm of a pivot lever 26A, which is mounted in the housing 22 of the magazine 20 so as to be pivotable about a corresponding pivot axis 26.1A. In alternative exemplary embodiments, which are not shown, the second actuating element 24.1A can be designed as a separate component and connected to the first actuating element 24A by screwing, gluing, welding, soldering or by other suitable connecting techniques. Furthermore, the first actuating element 24A can also be designed as a separate component and connected to the pivot lever 26A by screwing, gluing, welding, soldering or by other suitable connecting techniques.

By rotating the pivot lever 26A about the pivot axis 26.1A, one end of the pivot lever can be pivoted between the starting position and the end position with the first and second actuating elements 24A, 24.1A and the corresponding abutment section 24.2A. The other end of the pivot lever 26A is coupled to a handle, not shown in detail, of the fixed leaf 5 and/or to an emergency escape lever, not shown in detail. Furthermore, the second actuating element 24.1A, which is designed as an actuating projection, projects beyond the contact section 24.2A of the first actuating element 24A in the direction of the locking bolt 14 until the end position is reached. The second actuating element 24.1A can thus act, similarly to the first exemplary embodiment, on the unlocking element 14.1 through the opening in the locking tongue 14 before the contact section 24.2A of the first actuating element 24 contacts the locking tongue 14 and releases the locking of the locking tongue 14. The second actuating element 24.1A acts on the L-shaped end region 14.5 of the unlocking element 14.1, similarly to the first exemplary embodiment, counter to the force of the return spring 14.4.

As can be further seen from fig. 11, the locking element 16.1 of the lock slide 16 secures the extension-locked bolt 14 in the illustrated latched state of the double door, similarly to the first exemplary embodiment, against manual movement back into the extension-locked state.

As can be further seen from fig. 12, the catch box 20 in the fixed leaf 5 is operated by means of a handle, which is not marked in detail, and/or an emergency escape lever, which is not marked in detail. As a result, the pivot lever 26A is pivoted about the corresponding pivot axis 26.1A and the first actuating element 24 is moved with the contact section 24.2A and the second actuating element 24.1A, which is designed as an actuating projection, onto the projecting locking and blocking bolt 14.

As can be seen further from fig. 13, the catch box 20 in the fixed leaf 5 is further actuated by means of a handle not shown in detail and/or an emergency escape lever not shown in detail, and the second actuating element 24.1A in the catch box 20, which is designed as an actuating projection, is moved further in the direction of the locking bolt 14 by means of the pivot lever 26A and the first actuating element 24 and enters into the opening in the locking bolt 14. As a result, the unlocking element 14.1 is moved against the force of the return spring 14.4 in the direction of the locking element 16.1, so that it is lifted along with the lock slide 16. The locking bolt 14 is thereby released for the purpose of being transferred into the extended locking state. As can be seen further from fig. 13, the contact section 24.2A of the first actuating element 24A contacts the end face of the locking tongue 14 after the locking of the locking tongue 14 has been released.

As can be seen further from fig. 14, the catch box 20 in the fixed leaf 5 is further actuated by means of a handle not shown in detail and/or an emergency escape lever not shown in detail and the first actuating element 24A in the catch box 20 is moved further by means of the pivot lever 26A and moves the locking bolt 14 further back in the direction of the extended locking state. Before reaching the end position as the first actuating element 24A, the second actuating element 24.1A in the buckle housing 20 is pivoted out of the opening in the bolt 14, while the first actuating element 24 in the buckle housing 20 is moved further in the direction of the end position. The unlocking element 14.1 is thereby moved back into the starting position by the return spring 14.4, so that the L-shaped end region 14.5 is closed with the end face of the locking tongue 14, similar to the first exemplary embodiment. The locking tongue 14 latches in the extended locking state, so that the fixed leaf 5 and/or the movable leaf 3 can be opened. If desired, the locking bolt 14 can have a recess at the end facing the first actuating element 24A, which extends the range of rotation of the pivot lever 26A together with the first and second actuating elements 24A, 24.1A, upwards and/or downwards.

The embodiment of the locking device according to the invention for a two-leaf door advantageously provides improved protection against breaking and/or theft with the same emergency escape function.

List of reference numerals

1. 1A locking device

3 moving fan

5 fixed fan

7. 9 double-acting bolt

10 lock box

12 casing

14 bolt

14.1 unlocking element

14.2 inclined part

14.3 contour

14.4 Return spring

14.5 end region

16 lock guide plate

16.1 locking element

16.2 guide element

20 buckle box

22 casing

22.1 baffle

24. 24A first actuating element

24.1, 24.1A second actuating element

24.2, 24.2A abutment section

26. 26A pivot rod

26.1, 26.1A Pivot Axis

Claims

1. A locking device (1, 1A) for a two-leaf door, comprising a lock case (10) having a bolt (14) and a catch (20) having a cover (22.1), which secures the bolt (14) in an extended locking state against a transition into an extended locking state, in which the bolt (14) engages at least partially in the cover, wherein, by actuating the catch (20) to implement an emergency escape function, an unlocking element (14.1) guided in the bolt (14) lifts the catch of the bolt (14) and a first actuating element (24, 24A) transitions the bolt (14) from the extended locking state into an extended locking state, in which the bolt (14) releases the cover (22.1),

wherein the unlocking element (14.1) is completely inserted into the locking tongue (14) in the direction of the buckle box (20) independently of the closed state of the locking tongue (14), wherein a second actuating element (24.1, 24.1A) provided in the buckle box (20) moves the unlocking element (14.1) in the direction of the catch and lifts the catch of the locking tongue (14) by actuating the buckle box (20) to perform an emergency escape function,

it is characterized in that the preparation method is characterized in that,

the second actuating element (24.1) is guided in an axially movable manner in the first actuating element (24), wherein the first actuating element (24) can be moved between a starting position and an end position, wherein the second actuating element (24.1) protrudes beyond the first actuating element (24) in the direction of the bolt (14) until the end position is reached and acts on the unlocking element (14.1) through an opening in the bolt (14) before the first actuating element (24) comes into contact with the bolt (14).

2. The lock-out device according to claim 1,

it is characterized in that the preparation method is characterized in that,

the locking element is designed as a locking element (16.1) which is fixedly connected to the movable lock slide (16) and which, in the extended locked state of the locking tongue (14), forms a stop for the locking tongue (14).

3. The lock-out device according to claim 2,

it is characterized in that the preparation method is characterized in that,

the unlocking element (14.1) is designed with an actuating ramp which lifts the locking element (16.1) up against a ramp surface (14.2) of the locking bolt (14).

4. The lock-out device according to claim 2,

it is characterized in that the preparation method is characterized in that,

the lock guide (16) has a guide element (16.2) which, during the transfer of the locking bolt (14) into the extended locking state, rests against a contour (16.3) of the locking bolt (14) and moves the lock guide (16) perpendicular to the locking bolt (14) to a stop.

5. The locking device according to claim 3,

it is characterized in that the preparation method is characterized in that,

6. The lock-out device according to claim 1,

it is characterized in that the preparation method is characterized in that,

the first actuating element (24) fully accommodates the second actuating element (24.1) when reaching its end position, wherein the end position of the first actuating element (24) corresponds to the extended locking state of the locking bolt (14).

7. The lock device according to claim 1 or 6,

it is characterized in that the preparation method is characterized in that,

the first actuating element (24) is designed as a slide and the second actuating element (24.1) is designed as an actuating pin.

8. A latch according to any one of claims 1 to 5,

it is characterized in that the preparation method is characterized in that,

the second actuating element (24.1A) and the first actuating element (24A) are connected to one another, wherein the first actuating element (24A) and the second actuating element (24.1A) can be pivoted between a starting position and an end position.

9. The locking device according to claim 8,

it is characterized in that the preparation method is characterized in that,

the second actuating element (24.1A) is designed as an actuating projection which is integrally formed on the first actuating element (24A).

10. The locking device according to claim 8,

it is characterized in that the preparation method is characterized in that,

the locking tongue (14) has a recess at the end facing the first actuating element (24A) in the upward and/or downward direction, which increases the rotational range of the pivotable first actuating element (24A).

11. The locking device according to claim 9,

it is characterized in that the preparation method is characterized in that,

12. Double door comprising a moving leaf (3) and a stationary leaf (5) and a locking device (1, 1A) comprising a lock case (10) with a locking tongue (14) and a catch (20) with a closure flap (22.1) which secures the locking tongue (14) in the extended locked state against a transition into the extended locked state in which the locking tongue (14) engages at least partially in the closure flap, wherein, by actuating the catch (20) to implement an emergency escape function, an unlocking element (14.1) guided in the locking tongue (14) lifts the locking tongue of the locking tongue (14) and a first actuating element (24, 24A) transitions the locking tongue (14) from the extended locked state into the extended locked state in which the locking tongue (14) releases the closure flap (22.1) and the door is unlocked,

it is characterized in that the preparation method is characterized in that,

the locking device (1, 1A) is configured according to one of claims 1 to 11.

13. The double-leaf door according to claim 12,

it is characterized in that the preparation method is characterized in that,

the lock box (10) with the locking tongue (14) and the locking piece is arranged on the movable fan (3) and the buckle box (20) with the closure flap (22.1) is arranged on the stationary fan (5).

14. The double-leaf door according to claim 13,

it is characterized in that the preparation method is characterized in that,

the handle and/or emergency escape lever of the stationary fan (5) for performing the emergency escape function acts via at least one pivot lever (26, 26A) on a first actuating element (24, 24A) and actuates the buckle box (20), which in turn actuates the lock box (10), wherein the handle and/or emergency escape lever of the movable fan (3) for performing the emergency escape function acts on the locking element and the locking tongue (14) and actuates the lock box (10) directly.

15. The double-leaf door of claim 14,

it is characterized in that the preparation method is characterized in that,

two pivoting levers (26) act on a first actuating element (24) designed as a slide and actuate the buckle box (20).

16. The double-leaf door of claim 14,

it is characterized in that the preparation method is characterized in that,

the first actuating element (24A) is designed to pivot the arm of the lever (26A) and to actuate the buckle box (20).