CN113700393A - Lock, in particular emergency lock - Google Patents

Abstract

The invention relates to a lock, in particular an emergency lock, comprising: a bolt (2); a separate driver (3) having a first driver half (31) and a second driver half (32), wherein the two driver halves can be rotated about a common driver axis (35), wherein the first driver half is designed for retracting the bolt (2); a coupling element (4) which can be moved into a coupling position and a release position, wherein the coupling element (4) couples the two toggle halves to one another in a rotationally fixed manner in the coupling position and allows a relative rotation of the two toggle halves in the release position; a lever (5) which can be pivoted about a lever axis (55) and which is designed for actuating the coupling element (4); a sliding element (6) which is movable in a plane perpendicular to the driver axis (35) and which engages with the lever (5) and which is configured to be key-actuated, in particular by means of the lock cylinder (7).

Description

Lock, in particular emergency lock

Technical Field

The invention relates to a lock, which is preferably designed for insertion into a door leaf. In particular, the lock is an emergency lock.

Background

The lock considered here has, in particular, a lock housing and a cover plate and is designed for insertion into a door leaf. Typically, a door handle, panic lever, or knob is attached to both sides of the door panel via the toggle (Nuss) of the lock. By manipulating the door handle, emergency lever or knob, the bolt can be released or retracted. In particular, the lock considered here is a self-locking emergency lock. This type of lock has a self-locking mechanism for closing the door. In the case of the locks considered here, in particular self-locking emergency locks, the driver is here divided into at least two parts and has at least two rotatable driver halves. At least one of the driver halves is in particular always rotatable by means of a door handle, a panic lever or a knob on the door side. While the other of the toggle halves can be engaged and disengaged. Thereby enabling unauthorized entry from the outside to be prevented. In the case of panic locks, the possibility of escaping from the interior is provided at any time, since the bolt can always be released or retracted from the interior via the door handle and the corresponding panic function. Access from the outside can be prevented by the coupling mechanism or can be achieved if required. It is known to operate the coupling mechanism by means of an electromagnet. In particular in self-locking emergency locks, a purely manual connection or disconnection without an electromagnet is not known. Hereinafter, the words "access" and "coupling" are used as synonyms. Uncoupling and uncoupling are also used synonymously.

Disclosure of Invention

It is therefore an object of the present invention to provide a lock, in particular an emergency lock, which has a simple and low-maintenance, in particular purely mechanical, lock mechanism and which is universally usable.

Said object is achieved by the features of the lock according to the invention. Preferred modifications of the invention are described herein.

The object is therefore achieved by a lock, in particular a mortise lock. The lock is preferably designed as a panic lock, particularly preferably as a self-locking panic lock. The lock comprises a bolt and a separate toggle piece. The separated shifting piece comprises at least one first shifting piece half part and a second shifting piece half part. The two toggle halves can be rotated about a common toggle axis. The first toggle half is designed here for releasing or retracting the bolt. The first toggle half is in particular always designed to release or retract the bolt.

The toggle can include a toggle arm, wherein the toggle arm is used to release or retract the bolt.

At least during operation, the first toggle half can always be connected to the toggle arm. For example, the first toggle half and the toggle arm can be designed as separate components, wherein the first toggle half is always connected to the toggle arm during operation. Alternatively, the first toggle half can be formed in one piece with the toggle arm. With both alternatives, the door can always be opened from the door side, which the first toggle half faces. Thereby ensuring an emergency function. The respective door side is also referred to as emergency side.

In particular, a respective handle can be connected to each toggle half, for example by means of a square pin. The handle is in particular designed as a door handle, knob or emergency lever. It is therefore possible at any time to open the door, in which the lock can be installed, from the side of the first toggle part half, for example by means of a corresponding handle, thereby achieving the panic function of the lock.

The locking tongues can be configured, for example, as pivoting tongues or cross tongues. It is thereby possible to release the locking bolt by means of the toggle element, in particular by means of the toggle arm. The pivoting bolt released during opening of the door or the cross bolt released is then pressed back into the lock housing, whereas if the pivoting bolt or the cross bolt is jammed, the bolt cannot be pressed back.

The lock can also advantageously comprise a latch which, in particular, automatically advances when the door is closed. That is, the lock is preferably configured to be self-locking. In order to ensure the emergency function of the lock, the first toggle part half is preferably also designed here for retracting the locking bolt. Preferably, it is possible to retract the latch via a toggle arm.

Furthermore, the lock comprises a coupling element which is provided for coupling and uncoupling the two toggle halves. For this purpose, the coupling element can be moved into a coupling position and a release position. In the coupling position, the coupling element couples the two toggle halves to one another in a rotationally fixed manner. In the release position, the coupling element allows the two toggle halves to rotate relative to each other. In other words, in the disengaged state, i.e. when the coupling element is in the release position, the second toggle half is preferably not coupled to the toggle arm, but is in idle rotation. In this case, it is possible to open the door from the door side toward which the first toggle half faces, while it is not possible to open the door from the other door side toward which the second toggle half faces. On the contrary, when the coupling element is in the coupled position, the locking bolt can also be released or retracted via the second toggle half due to the rotationally fixed coupling of the two toggle halves to each other. For example, the coupling element is in this case arranged above the separate toggle piece in the vertical direction of the lock.

Furthermore, the lock comprises a lever. The lever is designed to be pivotable about a lever axis and is also designed to actuate the coupling element. The lever axis is preferably arranged parallel to the toggle axis.

Preferably, the lever is designed to move the coupling element into the coupling position and/or into the release position in connection with a pivoting about the lever axis. In particular, the lever presses the coupling element into the coupling position and/or exerts a magnetic force on the coupling element. The resetting into the release position can likewise take place via a lever; for example by means of magnets, which will be described in more detail. However, the lever can also only release the coupling element, wherein the return to the release position is effected in another way, for example in a spring-driven manner.

Furthermore, the lock comprises a movable sliding element. In particular, the sliding element can be moved in a plane perpendicular to the toggle axis. For example, the sliding element can be moved in this case in the vertical direction, i.e. perpendicular to the direction of movement of the bolt and the bolt.

The sliding element is operatively connected to, in particular engages, the lever and is preferably configured to be operable by a key. The sliding element is preferably designed to be actuated by a key for this purpose, for example by means of a driver of the lock cylinder. In particular, the sliding element is arranged such that it can be directly contacted by the driver and can be moved, in particular raised, by the driver. The lock preferably comprises a lock cylinder.

In addition or alternatively to the key-manipulability, it is also possible to define: the lower end of the sliding element is arranged in particular directly in the recess of the lock housing for the lock cylinder.

The sliding element is preferably arranged on the side of the lock cylinder facing away from the cover plate or in a recess for the lock cylinder of the lock and/or preferably on the side of the separate toggle part facing away from the cover plate.

Thus, a mechanical transmission of the lock is proposed by means of the sliding element, the lever and the coupling element, which mechanically transmits the key actuation to the separate tumbler at least in one direction of rotation. In this way, a mechanism can be provided in a particularly simple and cost-effective manner, which enables the coupling and decoupling of the second toggle part half to the first toggle part half, which can also be referred to as an emergency toggle part. By means of a special mechanical transmission, a particularly reliable system is also produced in this case, which does not require the use of electromagnetic actuators or the like, for example.

The special design of the lock therefore allows the lock to be used as an emergency lock with a so-called "switching function" (also referred to as "emergency function") according to DIN EN 179 and DIN EN 1125. In this case, it is proposed in particular that the external door handle is free-wheeling in the normal operating state, i.e. in the so-called cut-off mode, i.e. the two driver halves are not coupled to one another, and it is not possible to open the door from the side of the second driver half by means of the respective door handle. On this basis, a shift into the so-called shift mode can be effected by a key actuation. By means of the mechanism according to the invention having the coupling element, the lever and the sliding element, the two toggle halves can be coupled to one another in a rotationally fixed manner in the switch-on mode. In this switched-on mode, it is possible to open the door from both directions by means of a corresponding door handle. Preferably, when the key manipulation is resumed, it is possible to switch back to the cut-off mode by means of the lock mechanism, whereby the two toggle halves are disengaged again so that access from the outside is prevented.

Preferably, the coupling element has at least one coupling claw. The at least one coupling claw is hereinafter referred to as a first coupling claw.

The first coupling claw is connected with the first toggle piece half part. This connection can be effected, for example, indirectly via a toggle intermediate piece of the toggle, which in turn is connected in a rotationally fixed manner to the second toggle half. The first coupling pawl is rotatable relative to the first toggle part half, in particular about a coupling axis. For this purpose, the first coupling pawl can be rotatably fixed on the toggle intermediate part or on the first toggle half. The coupling axis is in particular parallel to the toggle axis.

Furthermore, the first coupling pawl is designed for engagement in the second toggle part half. In particular, when the first coupling pawl is in the coupled position, the first coupling pawl engages into the second lever half in order to couple the two lever halves to one another in a rotationally fixed manner. For this purpose, the first coupling pawl preferably engages in a form-fitting manner in the second toggle part half. For example, the first coupling pawl can engage in a form-fitting manner in the radial direction with respect to the lever axis in a radial recess of the second lever half. In order to achieve a movement of the coupling element, in particular of the first coupling claw, from the release position into the coupling position, the first coupling claw can advantageously be moved in the radial direction by actuation of the lever, for example by: the lever presses against the first coupling claw and/or exerts a magnetic force on the coupling element when pivoting about the lever axis.

As already mentioned, it is particularly advantageous if the driver additionally has a driver arm via which the release or retraction of the locking bolt by means of the first driver half is effected.

The toggle intermediate can include a toggle arm. The direction of the toggle arm with respect to the toggle axis is preferably arranged between the two toggle halves.

In particular, the lever intermediate part is in this case connected in a rotationally fixed manner to the first lever half by means of the second coupling pawl. Furthermore, the first coupling pawl is connected to the toggle intermediate part so as to be rotatable about a coupling axis parallel to the toggle axis. It is particularly advantageous if the second coupling pawl is likewise connected to the lever intermediate part so as to be rotatable about the coupling axis, wherein the second coupling pawl permanently maintains a form-fitting engagement with the first lever half. For example, the second coupling pawl can be held in engagement with the first toggle part half by means of a retaining ring, so that it is possible to retract the bolt correspondingly at any time by means of the first toggle part half. This design of the lock with the two coupling claws and the cross bolt is particularly advantageous in order to be able to obtain a substantially symmetrical lock which can be used for left-hand outward opening, right-hand outward opening, left-hand inward opening and/or right-hand inward opening. For example, the functions of the two toggle halves can be exchanged particularly easily and quickly by exchanging the retaining ring, in order to be able to exchange the emergency function of the lock between the two sides of the lock. That is, the coupling element always comprises one of the two coupling jaws; the term used herein is a first coupling jaw.

Alternatively, the toggle intermediate part and the first toggle half are formed in one piece and/or of the same material, in particular in one piece. Thereby enabling the second coupling claw to be discarded.

The sliding element and the lever are in particular operatively connected such that a linear movement of the sliding element is converted into a rotational movement of the lever. Preferably, the sliding element and the lever are connected to each other via a movable connecting shaft. The connecting shaft can be designed as a pin.

Particularly preferably, the sliding element has a pin which engages into the lever. It is particularly advantageous if the lever has a slot and the pin engages into the slot of the lever. Alternatively, an inverse design is also possible, i.e. the lever has a pin which engages in the sliding element, preferably in a groove of the sliding element. This makes it possible to mechanically couple the movement of the sliding element and the lever in a particularly simple and also reliable manner.

According to one variant, the lever is designed as a one-sided lever. A lever that is rotatable about its lever axis is considered herein to be a one-sided lever, wherein two or more points of action on the lever are located on the same side of the lever with respect to the lever axis. In particular, the points of action of the sliding element and the coupling element are formed on the same side of the lever.

According to an alternative preferred variant, the lever is configured as a double-sided lever. The lever axis is arranged here between two respective points of action of the coupling element and the sliding element on the lever.

In particular, the point of action of the sliding element on the lever corresponds to the point of engagement between the lever and the sliding element, preferably a pin. Advantageously. The point of action of the lever on the coupling element corresponds to the bearing point at which the lever rests on the first coupling claw for its actuation and/or magnetic interaction.

The sliding element can in particular assume a first state and a second state. In one of the two positions of the sliding element, the coupling element is in the coupling position, while in the other of the two positions of the sliding element, the coupling element is in the release position. The first position can correspond to a lower position in the mounted position. The second position can correspond to an upper position in the mounting position.

For example, it is conceivable that the coupling element is in the release position when the sliding element is in the first position. When the sliding element is in the second position, the coupling element is in the coupled position. This is particularly the case when the lever is configured as a double-sided lever.

Alternatively, the coupling element can be located in the coupled position when the sliding element is located in the first position. When the sliding element is in the second position, the coupling element is in the release position. This is particularly true if the lever is designed as a one-sided lever.

Furthermore, it is advantageous if the sliding element is designed to be held, in particular locked, in at least one stop point. In particular, it is preferred if a stop point is provided at each end of the translational sliding movement that can be performed by the sliding element. The sliding element can thus be held at the first and second stop points. In particular, the sliding element can be held, in particular locked, in the first position and/or in the second position. The sliding element can be held in the first position in the first stop point. The sliding element can be held in the second position in the second stop point.

In the stop points, in particular in the first and second stop points, the sliding element is held in a form-fitting and/or force-fitting manner. The sliding element is reversibly releasable from the stopping point. For example, the sliding element can be reversibly released from the stopping point by the force applied by the user. By means of a special mechanical transmission mechanism, the respective function and position of the locking mechanism, for example the coupling position and the release position of the coupling element, are thus determined for a particularly simple and precise manner of operation of the lock.

Particularly preferably, the lock further comprises a return spring which is designed to return the lever. In this case, the lever is reset such that the coupling element is released from the coupling position and in particular is moved or can be moved into the release position. Preferably, the coupling element is thereby held in the release position at any time in the state in which the sliding element is not actuated. In particular, a return spring is provided to move the sliding element from the second position into the first position.

As long as the sliding element can be locked at the at least one latching point, the latching force with which the sliding element is held, in particular in a force-fitting manner, in the latching point is preferably smaller than the restoring force of the spring. Thereby avoiding a locking that keeps the coupling element in the coupled position. In particular, the return spring in this case causes a mode of operation of the locking mechanism according to DIN EN 179 and DIN EN 1125, which is referred to as a "forced closing function" or "emergency function C". In this case, it is only possible to open the door or the lock from the side of the second toggle part half, i.e. preferably from the outside, if the key is used to actuate the lock, and in particular if the key actuation force is greater than the return force of the return spring. That is, only the contact side is accessible. In other words, the return spring causes: the rotationally fixed coupling of the two driver halves is only carried out during the key actuation of the sliding element.

It is furthermore particularly advantageous if the lock further comprises a blocking element which is designed to block the return spring.

Preferably, the blocking element can be actuated by means of an actuating lever. The actuating lever can be accessible, for example, on the outer side of the lock, preferably on the side of the lock facing away from the cover plate, or on the side wall, in order to actuate the same. The blocking element thus enables in particular the disabling of the return spring, so that the "forced closing function" is deactivated and instead there is, for example, a "switching function". The single lock with the return spring and the blocking element can therefore be used equally for both functions, namely the "panic function B" and the "panic function C". For example, it is possible to set one of these two functions by operating a lever before installing the lock in the door.

Alternatively or additionally, a blocking element is also conceivable which is able to hold the sliding element in one position, in particular in the second position, against the force of the return spring. The blocking element assumes the blocking position if it holds the sliding element against the force of the return spring. In the blocking position, the blocking element can hold a latching projection of the sliding element, for example, in a form-fitting manner. It is conceivable that the blocking element holds the sliding element, in particular holds the latching projection in a form-fitting manner, only in one position of the sliding element, in particular in the second position of the sliding element.

The toggle can comprise an operating lever. The actuating lever can be formed in particular in one piece with the first toggle part half, the second toggle part half and/or the toggle part intermediate part.

In this case, the sliding element is first moved, in particular into the second position, in a manner actuated by a key, and/or the coupling element is moved into the coupling position and is held there by the blocking element. Then, after the key is pulled out and the toggle piece is turned, the sliding element can be moved by the return spring.

In particular, the return spring moves the sliding element into a position in which the coupling element is in the release position. This enables a special type of "emergency function C" instead of "emergency function B".

The blocking element can be biased into the blocking position by means of a blocking element spring. The actuating lever is designed to move the blocking element from the blocking position into the unblocking position. In the unblocking position of the blocking element, the blocking element allows the return spring to move the sliding element. In particular, in the unblocking position, the blocking element is disengaged from the stop lug.

Particularly preferably, the lock further comprises a transition piece. The conversion element is in particular movable in translation. The switching element can be moved, in particular, by a toggle arm. Preferably, the transition element is able to occupy a first operating state and a second operating state. Preferably, the switching element is moved from the first operating state into the second operating state by means of a toggle arm.

The transition piece is capable of operating the latch and/or deadbolt. The conversion piece can release or block the bolt. For example, the conversion element can engage the bolt in a first operating state, so that the bolt is prevented from being pressed back into the lock housing, and can release the bolt in a second operating state, so that the bolt can be pressed back into the lock housing. Alternatively, the transition piece can retract the bolt by moving from the first operating state into the second operating state.

If the bolt is present, the bolt is locked outside the door in the first operating state of the changeover part and is retracted in the second operating state of the changeover part. The switching element can actuate the latch, for example, via a sliding slot.

The first toggle part half is designed in particular for actuating the switching element. In this case, the first toggle part half can be moved into the first position by the first toggle part, and the second toggle part can be moved into the second position by the second toggle part. The conversion element is preferably guided linearly movably. Preferably, the first toggle half moves the shifter via a toggle arm.

The lock can include a control bolt. The control bolt is designed to hold the switching element in the second operating state. The control of the locking bolt, for example by means of a catch plate, can be a prerequisite for the changeover element to be brought from the second operating state into the first operating state, for example by means of the force of a changeover element spring. By means of the control tongue, the lock can be configured to be self-locking.

The shift element can be moved from the first operating state into the second operating state, in particular by means of a key actuation, in particular via a driver of the lock cylinder.

Preferably, the movement of the switching element from the second operating state into the first operating state can have no influence on the position of the sliding element and/or of the coupling element. In other words, the sliding element and/or the coupling element remains in the position that the sliding element or the coupling element just occupies when the changeover element is moved from the second operating state into the first operating state. Thus, the self-locking has no influence on which position the sliding element is in. Thus, the self-locking has no influence on which position the coupling element is in.

In particular, the actuation of the switch element via the toggle arm can leave the sliding element in its position. That is, when the shifter is manipulated via the toggle arm, the sliding element remains in the first and/or second position. Preferably, the sliding element remains in at least one of the two positions when the changeover element is brought from the first operating state into the second operating state by means of the toggle arm. In particular, the sliding element remains at least in the first position when the changeover element is moved from the first operating state into the second operating state by means of the toggle arm.

In particular, the actuation of the switch by means of the toggle arm can leave the coupling element in its position. That is, when the shifter is manipulated via the toggle arm, the coupling element remains in the coupled position and/or the released position. It can be provided that at least the coupling element remains in the coupling position when the changeover element is brought from the first operating state into the second operating state by means of the toggle arm.

The emergency opening thus has no influence on the position of the sliding element, at least in the engaged state. The emergency opening can always have no influence on which position the sliding element is in. This applies in particular when emergency functions B and C are implemented according to the invention.

Advantageously, the lock further comprises a positive coupling lever operable by means of the transition piece. For this purpose, for example, a pin can be provided on the switching element, which pin actuates the positive-locking lever when the switching element is moved, in particular vertically. The positive coupling lever is designed here to pivot the lever via the conversion means during actuation, so that the lever actuates the coupling element and, in particular, moves the coupling element into the coupling position. It is particularly advantageous if in this case the locking, in particular of the sliding element, takes place such that the coupling element remains in the coupling position. This enables a further emergency function, namely a "channel function", also referred to as "emergency function D", to be implemented on the lock. This function is also referred to as "fire-fighting function". The positive coupling lever causes here: when the door is opened from the emergency side, i.e. when the bolt is retracted by means of the first toggle half, the coupling element is automatically moved into the coupled position, so that the second toggle half is accessed. Therefore, after opening the door from the emergency side, it is also possible to open the door from the outside, i.e., from the on side. In this case, it is possible, in particular, to operate by means of a key, to switch off the function, i.e. to move the coupling element into the release position.

The lock preferably further comprises a reset lever.

The reset lever is in particular designed as a double-sided lever. Here, the first free end of the reset lever and the sliding element engage one another. Furthermore, the second free end of the reset lever is configured to be operable by a key, in particular by means of a lock cylinder. For this purpose, it is particularly preferred if the driver of the lock cylinder can bear against the second free end of the reset lever during key actuation.

Preferably, the shift element can be raised indirectly via a reset lever in order to achieve a key-operated retraction of the bolt and/or a key-operated retraction or release of the bolt. For this purpose, it is preferably provided that a tab is formed on the second free end of the reset lever, which tab lifts, in particular contacts, a switch element of the lock.

In particular, the reset lever can occupy a first state and a second state. In particular, the reset lever can be moved, in particular rotated, from the first state into the second state by rotating the key and/or the driver. The rotation can be effected, for example, clockwise.

The first free end of the reset lever is preferably located on the side of the recess for the lock cylinder facing away from the cover plate. The second free end is preferably located on the side of the recess for the lock cylinder facing the cover plate.

The sliding element comprises an elongated hole, wherein the reset lever engages with a free end, in particular a first free end, into the elongated hole of the sliding element. In particular, the slot and the reset lever are designed such that in one position of the sliding element, in particular in the first position of the sliding element, a movement of the reset lever from the first state into the second state and/or from the second state into the first state has no influence on the position of the sliding element.

In the second position of the sliding element, a movement of the reset lever from the first state into the second state causes a movement of the sliding element, in particular a movement of the sliding element from the second position into the first position. The coupling element can thereby be moved into the release position or the coupling position by key actuation.

The reset lever can be moved from a first state into a second state by means of the lock cylinder.

In particular, the movement of the reset lever from the second state into the first state takes place by means of a transition piece. In particular, it is preferred that the movement of the reset lever from the second state into the first state is effected exclusively by means of the transition piece.

The reset lever can interact with the switch such that when the reset lever is in the second state, movement of the switch from the second operating state into the first operating state causes the reset lever to move from the second state into the first state. In this case, the switching element is pressed, for example, onto the web.

The reset lever can interact with the switch element such that when the reset lever is in the first position, the movement of the switch element from the first operating position into the second operating position takes place by means of the toggle arm, without the reset lever moving from the first position into the second operating position. In this case, the switching element can be lifted off the tab, for example. It is thereby possible to move the shift element via the toggle arm without influencing the position of the sliding element or only via the positive coupling lever.

Movement of the latch into the unlocked position and/or retraction or release of the deadbolt can be via the toggle arm only. In other words, key manipulation has no direct effect on the state of the deadbolt and/or bolt. More precisely, only the second toggle part half is engaged and disengaged by means of key actuation. The state of the bolt and/or the bolt is then actually influenced by the actuation of the handle. In this case, the lock preferably does not include a reset lever.

Preferably, the lock further comprises a magnet, which is designed to reset the coupling element, in particular the first coupling claw, into the release position. In particular, it is preferably provided that the magnet can lift the first coupling pawl in the radial direction away from the second toggle part half, so that the connection is released. This ensures in a simple manner that: in the switch-off mode, the coupling element is held in the release position in order to prevent the door handle on the side of the second toggle part half from opening the door, i.e., for example, from the outside.

Particularly preferably, the lever comprises a magnet which resets the coupling element into the release position. The magnet thus moves with the lever. Alternatively, the entire lever is made of a permanent magnetic material.

Drawings

The present invention will now be described in detail based on examples. Shown here are:

figure 1 shows a view of a lock according to a first embodiment of the invention,

figure 2 shows a detail of a perspective view of the lock of figure 1,

figure 3 shows a detail of a perspective view of a lock according to a second embodiment of the invention,

figure 4 shows a view of a lock according to a third embodiment of the invention,

figure 5 shows a detail of a perspective view of the lock of figure 4,

figure 6 shows a detailed view of the detent mechanism for the lock for all embodiments,

fig. 7 shows a detail view of the reset lever for the lock of all embodiments, and

fig. 8 shows a fourth embodiment corresponding to a modification of the second embodiment.

Detailed Description

Various embodiments of the lock 1 are described with reference to fig. 1 to 8. Identical or functionally identical or similar components are provided with the same reference numerals throughout.

Fig. 1 shows a view of a lock 1 according to a first embodiment of the invention. From this and other figures, the basic configuration of the lock 1 of all embodiments is first described.

The lock 1 comprises a lock housing 10 and a cover plate 11. The lock case 10 has a front side 10a and a rear side 10b opposite the front side 10 a. The cover plate 11 is located on the front side 10 a. When installed, the rear side 10b pushes the lock 1 into the door panel at the front. For orientation, the x-direction and the y-direction are drawn perpendicular to each other. In a typical installation position, the y-direction is vertical and extends from the bottom to the top. The x-direction extends from the front side 10a towards the rear side 10 b. In the installed position, the x-direction extends horizontally into the door panel.

Furthermore, the lock 1 comprises a bolt 2 and a control bolt 20. The locking tongues 2 are here designed as cross-locking tongues. Alternatively, it is also possible for the locking tongue 2 to be designed as a single locking tongue. The locking bolt 2 and the control bolt 20 project outwards through the cover plate 3 on the front side 10 a. In the closed state of the door, control latch bolt 20 is pressed in, thereby blocking the actuation of latch bolt 2 (pressing latch bolt 2 from the outside).

Furthermore, the lock 1 comprises a latch 91 for locking the lock 1 in the closed state of the door. For this purpose, controlling the locking tongue 20 when the door is closed causes or controlling the locking tongue 20 when the door is closed participates in causing the locking bar 91 to be moved forward into the locking state shown in the figures, i.e. locked outside the door, in which locking state the locking bar 91 likewise projects outwards through the cover 3 on the front side 10 a. The lock 1 is thus constructed to be self-locking.

To open the door, the latch tongue 2 needs to be pressed in and the latch 91 retracted. To this end, the lock 1 further comprises a transition piece 9. The transition piece 9 is able to occupy a first operating condition and a second operating condition. In the mounting position, the switching element is moved vertically upwards in the y direction in order to pass from the first operating state into the second operating state. The switching element is moved vertically downwards in the y direction in the installation position in order to pass from the second operating state into the first operating state.

In fig. 1 (and also fig. 4), the transition piece 9 is in the first operating state. In the first operating condition, the bolt is locked out of the door, as shown in fig. 1. In addition, in the first operating state, the return pressure of the locking bolt 2, which is designed as a cross-bolt, is blocked indirectly via the changeover element 9. In this case, the switching element 9 is operatively connected to the locking bolt 2 via a locking mechanism, not shown.

In the second operating state of the transition piece 9, the latch 91 is retracted. In this case, the switching element 9 retracts the latch 91 via a sliding slot formed in the switching element 9 when moving from the first operating state into the second operating state. In the second operating state, the switching element 9 releases the locking bolt 2. That is, the transition piece 9 is no longer blocked and the bolt 2 can be pressed back into the lock housing 10. If the latch bolt 2 slides along the strike plate or doorframe, back pressure of the latch bolt 2 occurs when the door is opened.

The control bolt 20 is designed to keep the converter 9 in the second operating state as long as the control bolt 20 protrudes from the lock housing 10. Pressing in the control bolt 20 is a prerequisite for the transition piece 9 being able to be brought from the second operating state into the first operating state. The switching element 9 is moved from the second operating state into the first operating state by means of a spring, not shown. The lock 1 is designed to be self-locking, since the control bolt 20 is always pressed into the lock housing 10 when the door is closed and the spring can then move the conversion element 9 into the first operating state. A further action may be required in order to be able to move the conversion element 9 into the first operating state, for example to press the locking tongue 2 in with contact with the catch plate and/or to move the locking tongue 2 out in the closed state of the door leaf. The further action occurs automatically when the door is closed.

Alternatively and not shown, the lock 1 can be constructed without the latch 91.

Thus, by the transition piece 9 being moved in the y direction, i.e. vertically upwards, from the first operating state into the second operating state, the bolt 2 is released and the latch 91 is retracted. The switch 9 can be moved in two different ways as described below to open the locked door.

On the one hand, it is possible to move the shift element 9 by means of key actuation. For this purpose, the lock 1 has a lock cylinder 7 (or at least one recess for receiving the lock cylinder 7) and a reset lever 67. The reset lever 67 is rotatably mounted about the reset axis 66. The reset axis 66 is arranged in particular on the side of the lock cylinder 7 facing away from the cover plate. The reset lever 67 is configured as a double-sided lever having a first free end 68 and a second free end 69.

At a second free end 69 of the reset lever 67, which is arranged on the cover plate side of the lock cylinder 7, the driver 71 of the lock cylinder 7 can be pressed against the first web 69a when the key is turned clockwise. As a result, the second web 69b of the reset lever 67 is moved in the y direction, so that the changeover part 9 is moved upward from the first operating state into the second operating state. The reset lever 67 in this case moves clockwise from the first state into the second state. Fig. 1 shows a first state of the reset lever 67. In the second state, the second tab 69b of the reset lever 67 continues to pivot upward.

Furthermore, it is possible to actuate the shift element 9 by means of the shift arm 27 of the shift element 3. The toggle 3 is separated, as can be seen in particular in fig. 2. By dividing the toggle 3 into two parts, the toggle 3 comprises a first toggle half 31 and a second toggle half 32. The two toggle halves 31, 32 can be rotated about a common toggle axis 35 perpendicular to the drawing plane of fig. 1. Each of the two driver halves 31, 32 is connected to the door handle via a square pin, not shown in the drawings. By rotating the toggle arm 27 clockwise (see fig. 1), it moves the changeover part upwards in the y direction into the second operating state. The toggle spring 28, which is embodied as a compression spring, after actuation returns the toggle arm 27 and at least the actuated toggle half of the toggle halves 31, 32 into the initial state depicted in fig. 1.

By means of the special shaping of the coupling mechanism of the dial 3 and the dial 3, the lock 1 allows to be used as an emergency lock with different emergency functions as follows.

As can be seen from fig. 2, a toggle intermediate having a toggle arm 27 is arranged between the two toggle halves 31, 32 in the direction of a toggle axis 35. In order to achieve a rotationally fixed connection of one or both of the toggle halves 31, 32 to the toggle arm 27, the lock 1 further comprises a coupling element 4. Depending on the application, the coupling element 4 comprises a first coupling claw 41 or a second coupling claw 42, which are each connected to the driver arm 27 so as to be rotatable about a common coupling axis 45. In the example shown, the second coupling pawl 42 is "deactivated" and engages here permanently form-fittingly into a recess in the first toggle part half 31 (see fig. 1). It is therefore possible to retract the bolt 2 at any time via the first toggle half 31. Thus, the door side to which the first toggle half 31 faces becomes the so-called panic side. Thus, the door can be opened at any time via the door handle connected to the first toggle half 31, thereby providing, for example, the possibility of escape from that side at any time.

Fig. 3 shows exemplarily for all embodiments: the lock 1 has a retaining ring 47, which retains the second coupling pawl 42 in permanent positive engagement with the first toggle half 31. For this purpose, the retaining ring 47 has a retaining web 48, which retains the coupling pawl 42 in radial engagement with the first toggle half 31. The first toggle half 31 is therefore connected in the installed position to the toggle arm 27 in a continuously rotationally fixed manner. By adjusting the retaining ring 47, the emergency side can be switched when the lock 1 is removed. For example, instead of the second coupling pawl 42, the first coupling pawl 41 can be permanently connected to the second lever half 32 by means of a retaining ring 47, so that the lever arm 27 can always be actuated by means of the second lever half 32 when the lock 1 is installed, and the changeover element 9 is movable. Thus, the door side to which the second toggle half 32 faces is configured as the panic side. The emergency side can thus be switched when the lock 1 is removed by means of the adjusting retaining ring 47.

However, it is also conceivable (not shown) for the toggle arm 27 to be formed integrally and/or of the same material as the first toggle part half 31. In this case, the panic side is determined as the door side toward which the first toggle half 31 faces. In this case, the emergency side cannot be switched without replacing the elements even when the lock is removed.

If the first lever half 31 is firmly connected to the lever arm 27 via the coupling pawl 42 or as a one-piece construction, it is possible to couple the second lever half 32 to the first lever half 31 in a rotationally fixed manner by means of the coupling element 4 or to allow the two lever halves 31, 32 to rotate relative to one another. For this purpose, the coupling element comprises a first coupling claw 41 which is designed for positive engagement into the recess 30 of the second toggle half 32 by pivoting about a coupling axis 45. This form-fitting engagement of the first coupling pawl 41 with the second toggle half 32 defines the coupling position of the coupling element 4.

The coupling element 4 can also be moved into a release position in which the first coupling pawl 41 is not engaged in the recess 30 of the second toggle part half 32. In the release position, which is shown in both fig. 1 and 2 and is also referred to as the lock-off mode, a relative rotation of the two toggle halves 31, 32 with respect to one another is possible. In particular, the second toggle half 32 is thus decoupled from the toggle arm 27 so that the respective door handle is in idle rotation. In this blocking mode, the door cannot therefore be opened by means of the door handle associated with the side of the second toggle half 32.

In order to move the coupling element 4 from the release position into the coupling position and vice versa, an actuating mechanism is provided, which will be described below.

The lock 1 further comprises a lever 5 pivotable about a lever axis 55 parallel to the toggle axis 35. The lever 5 is designed to actuate the first coupling claw 41 when it is pivoted about the lever axis 55. For this purpose, in the first embodiment, the lever 5 is configured as a double-sided lever.

According to the invention, the lever 5 can be actuated by means of a sliding element 6. As can be seen in fig. 2, the lever 5 has a slot 51 for actuation by means of the sliding element 6, into which a pin 61 of the sliding element 6 engages.

The sliding element 6 is movable between a first position in the lower part of the mounting position and a second position in the upper part of the mounting position.

In the embodiment of fig. 1, the connection between the lever 5 and the sliding element 6 is configured such that in the first position the lever 5 is pivoted such that the lever 5 brings about the release position.

Conversely, in the second position of the sliding element 6, the lever 5 is pivoted such that the lever 5 presses the coupling element 4 into the coupling position.

The disengagement is thus caused by the movement of the sliding element 6 from the second position into the first position and the corresponding pivoting of the lever 5. This disengagement, i.e. the movement of the coupling element 4 from the coupling position into the release position, takes place here by: the first coupling claw 41 is lifted by the lever 5 by means of magnetic force. For this purpose, the lever 5 has a magnet 52.

The coupling, i.e. the movement of the coupling element 4 from the release position into the coupling position, is achieved by the movement of the sliding element 6 from the first position into the second position and a corresponding pivoting of the lever 5, whereby the coupling element 4 is pressed downwards.

The sliding element 6 is movable between a first position and a second position in a plane perpendicular to the toggle axis 35. The plane corresponds here to the x-y plane or the drawing plane in fig. 1. According to the invention, the movement of the sliding element 6 is effected by means of key manipulation. For example, it can be moved in the vertical direction upwards, i.e. in the y direction. Specifically, when the key cylinder 7 is rotated counterclockwise (see fig. 1), the driver 71 acts on the lower end portion 63 of the slide element 6 to move the slide element 6 upward in the y-direction.

Such a key actuation, which moves the sliding element 6 upward, i.e. in the y direction, therefore causes the second toggle part half 32 to be switched into engagement with the first toggle part half 31, i.e. the coupling element 4 is moved into the coupled position. This state is therefore also referred to as the on mode of the lock 1. It is also possible to open the door from the side of the second toggle half 32.

In order to maintain this switched-on mode, the sliding element 6 is also designed to lock in the stop point. For this purpose, the sliding element 6 has a locking arm 62, which locks onto the lock housing 10 when the sliding element 6 is correspondingly moved upwards into the second position. Similarly, the sliding element 6 can be locked in a downwardly displaced first position, as depicted in fig. 1, i.e. in a switched-off mode. Fig. 6 shows a detail of fig. 1 with an enlarged stop mechanism for all embodiments by way of example. Depending on the vertical position of the sliding element 6, one of the two locking arms 62 can each be locked in a recess 12a in the rear wall 12 of the lock housing 10. The retention in the stop point can be overcome by key manipulation.

It is also possible to switch the lock 1 by key actuation in the opposite direction, i.e. when the lock cylinder 7 is rotated clockwise (see fig. 1). For this purpose, the first free end 68 of the reset lever 67 engages with the sliding element 6. As described, the reset lever 67 is in this case designed as a double-sided lever, so that the first free end 68 is arranged opposite the engagement point with respect to the reset axis 66, which is the engagement point with the driver 71 of the lock cylinder 7, i.e. the first web 69 a. Fig. 7 shows, by way of example, for all embodiments a detail of fig. 1, in which the reset lever 67 and its engagement with the sliding element 6 are shown enlarged.

When the key is actuated in the clockwise direction, the driver 71 acts on the first tab 69 a. The reset lever 67 moves from the first state into the second state. In this case, the first and second tabs 69a, 69b are lifted. Conversely, the first free end 68 descends. If the sliding element 67 is in the second position and the reset lever 67 is in the first state, the first free end 68 bears against the sliding element 6 (see fig. 7), so that a movement of the reset lever 67 from the first state into the second state causes a movement of the sliding element 6 from the second position into the first position.

This resetting by means of the reset lever 67 causes the sliding element 6 to move downwards, i.e. counter to the y-direction, into the first position. Thereby, the lever 5 is pivoted into the position depicted in fig. 1 and 2, and the first coupling pawl 41 is disengaged from the second toggle half 32.

The lock 1 of the first embodiment of fig. 1 and 2 effects a switch from the on mode to the off mode and vice versa, operated by a key. The lock 1 configured as a panic lock according to the first embodiment therefore satisfies the so-called "switching function" or "panic function B".

In order to make the coupling element 4 accessible and releasable only by means of a key actuation and, independently of this, to move the switching element 9 from the first operating state into the second operating state by means of the toggle arm 27 for the emergency function and/or to move the switching element 9 from the second operating state into the first operating state when the door leaf is moved into the closed position in order to bring about self-locking, it is proposed: the movement of the transition piece 9 has no influence on the position 6 of the sliding element.

For this purpose, it is proposed that the switching element 9 is not firmly connected to the second web 69 b. In the first operating state of the switching element 9, the switching element 9 rests on the second web 69 b. If the reset lever 67 is in the first state and the changeover part 9 is in the second operating state, the changeover part 9 and the reset lever 67 are spaced apart from one another. That is, if the reset lever 67 is in the first state, the changeover part 9 can be moved from the first operating state into the second operating state from the emergency side via the toggle arm 27 without the reset lever 67 and thus the sliding element 6 being moved. More precisely, the switching element 9 is lifted off the second tab 69 b. If the switching element 9 is moved back from the second operating state into the first operating state by the force of the spring, the switching element 9 comes into contact again with the second tab 69 b.

If the changeover element is moved from the first operating state into the second operating state in a key-operated manner by means of the driver 71, the reset lever 67 is moved from the first state into the second state. The second web 69b in this case remains in contact with the changeover part 9. When the switching element 9 is moved from the second operating state back into the first operating state, the reset lever 67 is thereby also moved counterclockwise from the second state into the first state.

In this case two cases have to be distinguished: if the sliding element 6 is in the first position, the movement of the reset lever 67 from the first operating state into the second operating state and back has no effect on the position of the sliding element 6. This is achieved by means of an elongated hole 87 (see fig. 7) of the sliding element 6, in which the first free end 68 can move. In the first state of the reset lever 67, the first free end 68 is located at the upper portion in the elongated hole 87 (see fig. 1) and moves downward in the elongated hole 87 when the reset lever 67 moves clockwise from the first state into the second state. When the reset lever is moved counterclockwise from the second position into the first position, the first free end 68 moves upward from below in the elongated hole 87. In other words, in the disengaged state of the lock, i.e. in the first position of the sliding element 6, the lock 1 can be unlocked by key actuation and then the latch 91 is moved out again in a self-locking manner without moving the coupling element 4 into the coupling position.

In contrast, if the sliding element 6 is in the second position, in the first operating state of the reset lever 67, the first free end 68 is located lower in the elongated hole 87 of the sliding element 6 (see fig. 7). If the reset lever 67 is now moved from the first position into the second position by the driver 71, the first free end 68 is moved downward in order to press the sliding element 6 from the second position into the first position as desired in order to shift the coupling element into the release position. Thereafter, the sliding element 6 is again in the first position, so that the return lever 67 does not influence the position of the sliding element 6 immediately after moving from the second operating state into the first operating state.

Figure 3 shows a detail of a perspective view of a lock 1 according to a second embodiment of the invention. The second exemplary embodiment corresponds essentially to the first exemplary embodiment, with the difference that an automatic return mechanism of the sliding element 6 is provided.

The lock 1 therefore additionally comprises a return spring 8 as a return mechanism for the sliding element 6. The return spring 8 is arranged vertically above the sliding element 6 and is held on a spring plate 83 by means of a spring pin 82. The return spring 8 is pressed against the upper end of the slide element 6. The spring force of the return spring 8 thus acts counter to the y direction, i.e. downwards. The spring force of the restoring spring 8 is greater than the holding force of the latching mechanism of the sliding element 6, so that the sliding element 6 is restored by the restoring spring 8 in the non-actuated state from the second position into the first position. The force of the return spring 8 achieves a holding force against the stop point.

Thus, in the lock 1 according to the second embodiment, the coupling of the two toggle piece halves 31, 32 is only possible by means of key actuation exerting a force which is opposite to and greater than the spring force. Therefore, only the on mode of the lock 1 of the second embodiment can be reached. It is therefore only possible to open the door from the side of the second toggle part half 32 by means of the door handle during simultaneous key actuation. This function of the panic lock is also referred to as a "forced shutdown function" or "panic function C".

The lock 1 according to the second embodiment of fig. 3 also has a blocking element 81, shown purely schematically, which effects a blocking of the return spring 8. Thus, the function of the return spring 8 can be blocked, thereby disabling the "forced closing function" of the lock, and instead there is a "switching function" as in the lock according to the first embodiment. The actuation of the blocking element 81 is possible here by means of an actuating lever (not shown) which is accessible and actuatable via a side wall of the lock housing 10.

Embodiments of the invention without a blocking element 81 are equally feasible.

Fig. 8 shows a further embodiment of the invention, which is a further modification of the embodiment in fig. 4. Although the embodiment of fig. 8 is discussed before the embodiments of fig. 4 and 5, it is referred to as a fourth embodiment. The embodiment of fig. 4 and 5 is referred to as a third embodiment.

In fig. 8 a part of the lock 1 is shown. In this case, the sliding element 6 is in the second position. The coupling element 4 is in the coupled position.

In this exemplary embodiment, no blocking element 81 is provided on the return spring 8. More precisely, the return spring 8 always acts on the sliding element 6 in the second position. The actuating lever is furthermore inaccessible via the side wall.

Instead of this, an alternative blocking element 81 is provided, which holds the sliding element 6 in the second position against the force of the return spring 8. For this purpose, the blocking element 81 is biased by means of a blocking element spring 84 toward the blocking position of the blocking element 81. The blocking position is shown in fig. 8. In this case, the blocking element 81 engages into the sliding element 6 in order to hold the sliding element 6 in the second position. For example, the blocking element 81 is located below the stop projection 86 of the sliding element 6.

The toggle member includes an operating lever 85. The actuating lever 85 is formed in one piece with the first toggle part half 31, the second toggle part half 32 and/or the toggle part intermediate part. An actuating lever 85 is provided in order to move the blocking element 81 from the blocking position into the unblocking position. In the unblocking position of the blocking element 81, the blocking element 81 is disengaged from the stop projection 86. Thereby, the return spring 8 is able to move the sliding element 6 back into the first position.

If the actuating lever 85 is moved back into the initial state, the blocking element 81 is moved again by the blocking element spring 84 toward the sliding element 6 and is located above the latching projection 86, since the sliding element 6 is now in the first position. However, it is possible by way of the design of the latching projection 86 that the blocking element 81 reaches the blocking position when the sliding element 6 is moved from the first position into the second position.

With the embodiment of fig. 8, it is not necessary to move the coupling element 4 into the release position by means of the catch 71 by key actuation, as in the embodiment of fig. 1. It is also not necessary to leave the coupling element 4 in the coupled position against the force of the return spring 8 by holding the key in the operating position, as in fig. 3. Rather, the coupling element 4 can be initially moved into the coupling position by means of a key actuation. In the coupled position, the coupling element 4 is first held indirectly by the blocking element 81. When the door handle is actuated, and thus the actuating arm 27, the coupling element 4 is pivoted into the release position again.

In a further modification of the embodiment of fig. 3 and 8, the lock 1 is constructed without a reset lever 67. Thereby, the lock 1 is always unlocked via the dial arm 27. The shift element 9 is always moved from the first operating state into the second operating state via the shift arm 27. From the emergency side, unlocking is always possible via the permanent connection of the first toggle half 31 to the toggle arm 27. In order to be able to unlock the lock 1 from the door side, which is faced by the second toggle half 32, the sliding element 6 must first be moved into the second position by key actuation. Thereby, the coupling element 4 is in the coupled position, so that the lock 1 can also be unlocked from the door side. The sliding element 6 is retracted by a restoring spring 8.

Fig. 4 shows a lock 1 according to a third embodiment of the invention. Fig. 5 shows a perspective detail view of a lock 1 according to a third exemplary embodiment. The third exemplary embodiment corresponds essentially to the first exemplary embodiment of the alternative embodiment of the actuating mechanism with the coupling element 4 of fig. 1 and 2. The lock 1 of the third embodiment therefore has a further alternative mode of operation with respect to the emergency function.

Fig. 4 shows the basic state of the lock 1 in the cut-off mode, similar to fig. 1. Fig. 5 shows the situation during the actuation of the door handle, which is connected to the first toggle part half 31, i.e. when the door is opened from the emergency side.

As can be seen in fig. 4 and 5, the lock 1 of the third embodiment additionally has a positive coupling lever 92. The positive coupling lever 92 is arranged above the lever 5 and on the cover side and effects the actuation of the lever 5 by means of the switch 9. For this purpose, the positive-locking lever 92 is arranged rotatably about a positive-locking lever axis 95 and is designed as a double-sided lever. By means of a spring 94, the positive coupling lever 92 is held in the position shown in fig. 4 in the non-actuated state.

When the door handle is actuated, the switching element 9 is moved upward into the second operating state by way of the first toggle part half 31 and the toggle arm 27. In this vertical movement of the switch 9, an actuating pin 93 provided on the switch 9 causes a pivoting of the positive coupling lever 92, so that the positive coupling lever 92 actuates the lever 5. As a result, the coupling element 4 is moved into the coupling position, as is shown in particular in fig. 5. Thus, when the door is opened from the emergency side, i.e. the side of the first toggle half 31, the two toggle halves 31, 32 are automatically coupled by means of the switched-operation positive coupling lever 92. Furthermore, the sliding element 6 is moved by actuating the lever 5. The coupling element is held in the coupling position by the actuating mechanism of the coupling element 4 by means of the latching arm 62 of the sliding element 6. When the positive coupling lever 92 is reset by the force of the spring 94 into the non-actuated state, for example when the changeover member 9 returns from the second operating state into the first operating state with the door closed, the coupling element 4 is still held via the stop arm 62 of the sliding element 6.

Furthermore, the lever 5 in the third exemplary embodiment is designed as a one-sided lever, as can be seen in particular in fig. 5. In this case, the point of engagement of the pin 61 of the sliding element 6 and the point of action of the lever 5 against the coupling element 4 are located on the same side of the lever 5 with respect to the lever axis 55. The mutual fit of the movements of the lever 5 and the sliding element 6 is thus exactly opposite compared to fig. 1.

In order to switch the lock 1 from the on mode back to the off mode (see fig. 4), the sliding element 6 needs to be moved upwards in the y-direction from the first position into the second position, since the lever 5 is designed as a one-sided lever. This is therefore the exact opposite of the examples in fig. 1-3 and 8.

In the exemplary embodiment of fig. 4 and 5, the connection between the lever 5 and the sliding element 6 is designed such that in the first position of the sliding element 6 the lever 5 is pivoted such that the lever 5 presses the coupling element 4 into the coupling position.

In the second position of the sliding element 6, the lever 5 is pivoted such that the lever 5 holds the coupling element 4 in the release position by means of magnetic force.

The sliding element 6 is moved from the first position into the second position by a counterclockwise rotation of the lock cylinder 7 and the action of the driver 71 on the sliding element 6 at the bottom. This movement corresponds to the movement in the embodiments of figures 1, 2, 3 and 8. However, the coupling element 4 is moved into the release position by the sliding element 6 moving from the lower first position into the upper second position.

The disengagement is thus caused by the movement of the sliding element 6 from the first position into the second position and the corresponding pivoting of the lever 5. The coupling is achieved by the sliding element 6 moving from the second position into the first position and the corresponding pivoting of the lever 5, i.e. the coupling element 4 moves from the release position into the coupling position, whereby the coupling element 4 is pressed downward.

The counterclockwise rotation of the catch 71 moves the sliding element 6 from the first position into the second position as in the embodiment of fig. 1. In the exemplary embodiment of fig. 4 and 5, however, a disconnection is thereby caused.

The clockwise rotation of the driver 71 moves the sliding element 6 from the second position into the first position via the reset lever 67 as in the embodiment of fig. 1. However, in the exemplary embodiments of fig. 4 and 5, access is thereby initiated.

Furthermore, unlike in the embodiment of fig. 1, by means of a positive coupling lever 92, the access and thus the movement of the sliding element 6 is possible.

If the coupling element 4 is in the coupling position and thus the sliding element 6 is in the first position, the movement of the changeover part 9 has no effect on the position of the coupling element 4. On the one hand, the positive coupling lever 92 does not have any effect by being actuated again, since the lever 5 has already been depressed. When the switch 9 is actuated via the toggle arm 27, the switch 9 is lifted from the second tab 69 b. Due to the elongated hole 87 of the sliding element 6, the movement of the shift element 9 actuated by the key has no effect on the position of the sliding element 6 in the first position. More precisely, the first free end 68 moves up and down in the slot 87 without effect.

If the sliding element 6 is in the second position, the clockwise actuation of the driver 71 via the reset lever 67 rotates the sliding element 6 into the first position. For this purpose, the first free end 68 at the lower end of the elongated hole 87 presses the sliding element 6 further downwards. The coupling element 4 is thereby simultaneously moved into the coupling position when the key-actuated unlocking is performed.

The lock 1 of the third embodiment of fig. 4 and 5 thus implements another panic function, namely a "passage function", also referred to as "panic function D". This function is also referred to as "fire-fighting function". In this case, it is also possible, after the door has been opened from the panic side, i.e. from the side of the first toggle half 31, in particular from the inside, to then open the door from the outside, i.e. from the side of the second toggle half 32, until the lock 1 is put into the blocking mode again by actuation of the locking mechanism, in this case by a counterclockwise rotation of the driver 71.

List of reference numerals

1 Lock

2 lock bolt

3 separating type toggle piece

4 coupling element

5 Lever

6 sliding element

7 lock core

8 reset spring

9 conversion piece

10 lock case

10a front side

10b rear side

11 cover plate

12 rear wall

12a hollow part

20 control bolt

27 toggle arm

28 toggle spring

30 hollow part

31 first toggle part half

32 second toggle half

35 axis of the toggle

41 first coupling claw

42 second coupling claw

45 axis of coupling

48 retaining tab

51 groove

52 magnet

55 lever axis

61 Pin

62 stop arm

63 lower end part

66 axis of reduction

67 reset lever

68 first free end

69 second free end

69a first tab

69b second tab

71 driving piece

81 blocking element

82 spring pin

83 spring plate

84 blocking element spring

85 operating lever

86 projection

91 lock bolt

92 forced coupling lever

93 operating pin

94 spring

95 forced coupling of lever axes

Claims (15)

1. A lock, in particular an emergency lock, comprising:

a lock tongue (2),

a separate driver (3) having a first driver half (31) and a second driver half (32), wherein the two driver halves (31, 32) can be rotated about a common driver axis (35), and wherein the first driver half (31) is designed to release or retract the locking bolt (2),

a coupling element (4) which can be moved into a coupling position and a release position, wherein the coupling element (4) couples the two toggle halves (31, 32) to one another in a rotationally fixed manner in the coupling position and allows a relative rotation of the two toggle halves (31, 32) in the release position,

a lever (5) which can be pivoted about a lever axis (55) and which is designed for actuating the coupling element (4), an

A sliding element (6) which is movable and is operatively connected to the lever (5), in particular engages, and which is designed to be actuated by a key, in particular by means of a key cylinder (7).

2. The lock according to claim 1, wherein the coupling element (4) has a first coupling claw (41) which is designed for engagement in the second driver half (32), wherein the driver (3) has a driver arm (27) which is connected to the first driver half (31) in a rotationally fixed manner, in particular by means of a second coupling claw (42), and which is designed for releasing or retracting the locking bolt (2), wherein the first coupling claw (41) is connected to the driver arm (27) in a rotatable manner about a coupling axis (45).

3. Lock according to any one of the preceding claims,

wherein the sliding element (6) has a pin (61) which engages into the lever (5), in particular into a groove (51) of the lever (5),

or wherein the lever (5) has a pin which engages into the sliding element (6), in particular into a groove in the sliding element (6).

4. Lock according to any of the preceding claims, wherein the lever (5) is configured as a one-sided lever.

5. The lock according to any one of claims 1 to 3, wherein the lever (5) is configured as a double-sided lever, and wherein the lever axis (55) is arranged between the respective points of action of the coupling element (4) and the sliding element (6) on the lever (5).

6. Lock according to any of the preceding claims, wherein the sliding element (6) is designed to lock in at least one stop point, in particular to lock the sliding element (6) in a first and a second stop point.

7. The lock according to any one of the preceding claims, further comprising a return spring (8) designed to return the lever (5) so that the coupling element (4) is released from the coupling position.

8. Lock according to claim 7, further comprising a blocking element (81) which is designed to block the return spring (8) and/or to hold the sliding element (6) in position against the force of the return spring, wherein the blocking element (81) is in particular actuatable by means of an actuating lever (85).

9. The lock according to any one of the preceding claims, further comprising a changeover element (9) which operates a latch (91) and/or the bolt (2) and/or releases and/or catches the bolt (2), wherein the first toggle half (31) is formed in particular via the toggle arm (27) for operating the changeover element (9), wherein in particular the operation of the changeover element (9) via the toggle arm (27) leaves the sliding element (6) in the position of the sliding element (6).

10. Lock according to claim 9, further comprising a positive coupling lever (92) which can be operated by means of the transition piece (9) and which is designed to pivot the lever (5) when the transition piece (9) is operated, so that the lever (5) operates the coupling element (4).

11. Lock according to one of the preceding claims, further comprising a reset lever (67) configured as a double-sided lever, wherein a first free end (68) of the reset lever (67) and the sliding element (6) engage with each other, and wherein a second free end (69) of the reset lever (67) is configured to be key-operable, in particular by means of a key cylinder (7).

12. The lock according to any one of the preceding claims, characterized in that the lock comprises a reset lever (67), wherein the sliding element (6) comprises an elongated hole (87), wherein the reset lever (67) engages into the elongated hole (87) of the sliding element (6) by means of the first free end (68) such that in the first position of the sliding element (6) the movement of the reset lever (67) from the first state into the second state and/or from the second state into the first state has no effect on the position of the sliding element (6) and in the second position of the sliding element (6) the movement of the reset lever (67) from the first state into the second state causes the sliding element (6) to move from the second position into the first position.

13. The lock according to any one of the preceding claims, characterized in that the reset lever (67) is configured for movement from the first state into the second state by means of the lock cylinder (7), wherein in particular the movement of the reset lever (67) from the second state into the first state takes place solely by means of the changeover element (9).

14. The lock according to any one of the preceding claims, characterized in that the reset lever (67) interacts with the changeover member (9) such that when the reset lever (67) is in the second state, a movement of the changeover member (9) from the second into the first operating state causes a movement of the reset lever (67) from the second into the first state, and/or when the reset lever (67) is in the first state, a movement of the changeover member (9) from the first into the second operating state takes place by means of the toggle arm (27), without the reset lever (67) passing from the first into the second state.

15. The lock according to any one of claims 1 to 10, characterized in that the movement of the bolt (91) into the unlocked position and/or the release of the bolt (2) or the retraction of the bolt is performed solely via the toggle arm (27).

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