Locking device

Abstract

The invention relates to a locking device (10) for locking a closure element, in particular a door, the locking device having: a recess (1); a pivot lever (2) which is supported pivotably on the recess (1) and which in a pivoted-out position (A) is rotatable about an actuation axis (B) and in a pivoted-in position (E) is non-rotatably locked in the recess (1); and a securing element (3) which in a securing position (S) secures the pivoted-in pivot lever (2) against pivoting out, wherein the securing element (3) is designed as a catch which is spring-loaded into the securing position (S).

Description

[0001] locking device

[0002] The invention relates to a locking device for locking a locking element, in particular a door, with a recess, a pivoting lever which is hingedly mounted on the recess and which is rotatable about an actuating axis in an extended position and non-rotatably locked in the recess in a folded-in position, and a securing element which secures the folded-in pivoting lever in a securing position against folding out.

[0003] Such locking devices can be used in a wide variety of technical fields to lock closing elements such as doors, flaps, hatches, windows, or the like, preventing them from being opened. To open the corresponding locking elements, the locking device must first be moved from the corresponding locking position to an unlocked position.

[0004] Such locking devices typically have a recess on the outside of the locking element, on which a pivoting lever is usually arranged, accessible from the outside of the locking element. This pivoting lever can be coupled to a locking element arranged on the inside of the door via a locking shaft extending through the locking element, so that the locking element can be rotated back and forth between the unlocked position and the locked position by a pivoting movement of the pivoting lever about an actuating axis. In the locked position, the locking element can engage behind the frame of the locking element, so that the locking element is then fixed relative to the frame and can therefore no longer be opened.If the locking element is turned into the unlocking position using the pivot lever, it no longer engages behind the frame and the locking element can be opened again.

[0005] In order to rotate the pivot lever around the actuating axis, however, it must first be folded out of the recess about an axis extending perpendicular to the actuating axis. This is because the pivot lever can be moved between a folded-in position and a folded-out position. In the folded-in position, rotation about the actuating axis is prevented, and the pivot lever is thus locked in the recess and cannot rotate.

[0006] To prevent unwanted unlocking and opening of the

[0007] The locking element allows the pivot lever to be secured in the folded-in position by a locking element. When the locking element is in a locking position, it is not possible to extend the pivot lever from the recess, and accordingly, it cannot be pivoted about the actuating axis for unlocking. To do this, the locking element must first be moved into a release position, in which the pivot lever is no longer held or secured in the folded-in position, but can be folded out of the recess to enable a pivoting movement.

[0008] Such a locking device is described, for example, in DE 20 2011 052 355 U1. This device uses a cylinder lock to secure the pivot lever folded into the recess. With the pivot lever unfolded, the cylinder lock must first be moved into the release position using a key so that the lock thumb rests on the contour of the cylinder lock and the pivot lever can then be folded into the recess. Once the pivot lever is fully folded in and locked in the recess, the cylinder lock can be moved into the locking position by turning the key. In this position, the lock thumb engages behind the recess and thus secures the pivot lever against folding out into the recess.

[0009] While this locking device has proven itself in practice, the cylinder lock must always be moved to the release position by turning the key before the pivot lever is folded in. Otherwise, the lock thumb, which protrudes laterally in the locking position, would collide with the recess when the pivot lever is folded in, thus preventing it from folding in. Overall, locking the locking element with this device is therefore comparatively complex. Based on this, the invention sets itself the task of providing a locking device characterized by the possibility of simplified locking.

[0010] This object is achieved in a locking device of the type described above in that the securing element is designed as a latch spring-loaded into the securing position.

[0011] This design eliminates the need to actively move the locking element into the release position in advance to fold the pivot lever into the recess, simplifying the locking process overall. This creates a push-to-lock function, allowing the pivot lever to be easily folded into the recess independently of the locking element or the position of the locking element. Due to the spring preload, the locking element can engage behind or into the recess to secure the pivot lever. The pivot lever can incorporate the locking element.

[0012] Furthermore, it has proven advantageous if the securing element and the recess are designed in such a way that when the pivot lever is folded in, the securing element engages the recess to secure the pivot lever, in particular engages it automatically. By engaging the recess, the securing element can secure the pivot lever in the recess so that it can then no longer be folded out. The pivot lever and the recess can thus be positively connected to one another in the folded-in position via the securing element. Because the pivot lever is locked in the recess, it is not possible to rotate the pivot lever about the actuating axis to unlock it. In order to fold the pivot lever out of the recess, the rear engagement must first be released or canceled, for which the securing element can be moved into a release position.

[0013] When the pivot lever is folded into the recess, the locking element can come into contact with the recess, automatically deflect against the spring preload, and be moved into a preloaded position. When the pivot lever is then fully folded in, the locking element, driven by the spring preload, can automatically engage the recess to secure the pivot lever. The locking element can then be moved from the preloaded position to the locking position. To lock the locking element, it is therefore only necessary to fold the pivot lever into the recess. The deflection of the locking element and the locking of the recess then occur automatically and do not require manual movement of the locking element.

[0014] With regard to the securing element, it has also proven advantageous if it has a starting contour that pre-tensions the securing element into a pre-tensioned position when the pivot lever is folded into the recess. The starting contour allows the securing element to move freely when the pivot lever is folded into the recess. An active movement of the securing element is not required for this. The starting contour can have a starting bevel which, due to the folding movement of the pivot lever, leads to an evasive movement of the securing element upon contact with the recess. The securing element can be moved into the pre-tensioned position and spring-loaded so that it can automatically engage the recess when the pivot lever is fully folded in. In the engaged position, the securing element is then in the securing position.It is advantageous if the trough has a correspondingly designed starting contour, wherein the starting contour of the securing element comes into contact with the starting contour of the trough when folding in and the securing element can then be moved into the pre-tensioned position, as explained above.

[0015] According to a structurally advantageous development of the invention, the securing element is ring-shaped. The starting contour can be designed as a radial projection tapering in the circumferential direction. This design allows the securing element to be rotated when the pivot lever is folded in and when it comes into contact with the recess. The radial projection can taper in the circumferential direction and thus have an arrow-shaped or V-shaped geometry in the circumferential direction. The flank of the radial projection that comes into contact with the recess when it is folded in can function as a starting bevel and initiate a rotational movement of the securing element into the preloaded position. The aforementioned directions are defined for the ring-shaped securing element by means of the longitudinal axis extending concentrically through the ring-shaped securing element. The radial direction therefore refers to a direction perpendicular to the longitudinal axis.The longitudinal axis may correspond to the release axis.

[0016] According to an alternative embodiment, the securing element is designed in a bar-shaped manner and the starting contour is arranged at one end of the securing element. The bar-shaped embodiment is characterized by a structurally simple design. The securing element can extend transversely to the actuating axis and parallel to the pivot axis of the pivot lever. In this construction, the securing element can be block-shaped and therefore have a high level of stability. The starting contour can be arranged at a distal end of the securing element, which comes into contact with the recess when the pivot lever is folded in. In this embodiment, the securing element can be moved in a linear direction into the preloaded position when it comes into contact with the recess when the pivot lever is folded in.

[0017] Furthermore, it has proven advantageous if the securing element can be rotated back and forth about a release axis between a securing position and a release position, wherein the pivoting lever can be folded out of the recess in the release position. In the securing position, the securing element can engage behind the recess and in the release position the securing element cannot engage behind the recess. When the securing element has been moved into the release position, the pivoting lever can thus be released and moved from the folded-in position to the folded-out position and then rotated about the actuating axis for unlocking. The release axis can extend parallel to the actuating axis and thus be arranged perpendicular to the door or locking element plane.

[0018] To release the securing element, it has also proven advantageous to provide an actuation means by which the securing element can be rotated from the securing position into the release position. By rotating the pivoting lever, it can then be selectively released and then folded out of the recess. The securing element can advantageously be rotated manually into the release position, in particular from the outside of the locking element. Electrical movement via a drive, such as an electric motor, is also possible. Furthermore, the securing element can also be moved from the release position into the securing position. For this purpose, the securing element can be rotated in the opposite direction around the release axis. However, due to the design of the securing element as a spring-loaded latch, this is not absolutely necessary.This is because the pivot lever can be folded in independently of the position of the safety element, so that no active transfer to the release position is required for folding.

[0019] To rotate the locking element, particularly from the locking position to the release position, the actuator can be rotationally coupled to the locking element. The rotational coupling can be direct or indirect, as will be explained in more detail below.

[0020] To rotate the securing element, in particular from the securing position to the release position, the actuation can be rotationally coupled to the securing element. The rotational coupling can be direct or indirect, as will be explained in more detail below. In the case of a direct coupling, the actuation can be positively coupled to the securing element. The actuation can have a connecting section for this purpose. The connecting section can have a non-circular cross-section so that the securing element can be held in a rotationally fixed manner on the connecting section via a correspondingly designed receptacle. The connecting section can advantageously have, for example, a profiled, in particular a square, cross-section.In the case of an indirect coupling of the actuation and the securing element, the actuation can be coupled to an intermediate element via the connecting section, in particular connected in a rotationally fixed manner.

[0021] With regard to the design of the actuation, it has also proven advantageous if it has a locking cylinder. The securing element can thus be rotated about the release axis using a suitable key. The securing element can be rotated back and forth about the release axis using the locking cylinder, in particular from the securing position into the release position. The locking cylinder can have a locking cylinder core or a roller that can only be rotated about the release axis using a suitable key. If the actuation has a locking cylinder, the connecting section can be connected to the roller or to the locking cylinder core, so that the connecting section and thus also the locking element or the intermediate element can then be rotated.When the pivot lever is folded into the recess, the key matching the locking cylinder is required to release the pivot lever and thus unlock the locking element. This allows access control to be ensured by the locking cylinder.

[0022] According to an alternative embodiment, it has proven advantageous if the actuation comprises a tool actuation. The securing element can thus be rotated about the release axis using a tool. The tool actuation can have an interface so that the tool actuation and thus also the securing element can be rotated using the tool, in particular from the securing position to the release position. The tool actuation can thus prevent the securing element from being moved without further ado. In this respect, access control can also be achieved via the tool actuation. A double-bit tool, a switch cabinet key or, for example, a square or hexagon key can be used to rotate the tool actuation or the securing element using the tool actuation.The tool actuation can have a correspondingly designed interface which is accessible from the outside of the closing element.

[0023] According to an advantageous development of the invention, the securing element is preloaded into the securing position by a spring. Due to the preload, it is not necessary to actively rotate the securing element from the release position into the securing position; instead, if no force is applied to the securing element during actuation, it is moved into the securing position by the spring. The securing element can thus automatically spring into the securing position when the pivot lever has been folded into the recess and is arranged in the folded position. This ensures reliable securing of the pivot lever in the recess, and it is impossible for the folded pivot lever to be inadvertently not secured in the recess.

[0024] With regard to the pretension of the securing element, it has proven advantageous if it is pretensioned about the release axis into the securing position by a spring designed as a torsion spring. The torsion spring can exert a torque on the securing element, which rotates it accordingly about the release axis into the securing position. This design can be used in particular if the securing element is ring-shaped, as described above. When the pivot lever is folded in, the securing element can be rotated against the force of the torsion spring and thus tension the torsion spring. The torsion spring can be arranged concentrically to the securing element. One end of the torsion spring can be connected to the securing element and the other end can be immovably fixed, e.g. to a mounting element described in more detail below.

[0025] With regard to the design of the locking element, it has proven advantageous if it is configured as a rotatable, inclined locking latch. This design allows the locking element to be rotated away from the pre-tensioned position when the pivot lever is folded in around the release axis, allowing the pivot lever to be fully folded into the recess. When the pivot lever is fully folded in, the locking element can jump from the pre-tensioned position to the locking position thanks to the torsion spring.

[0026] It has proven advantageous if the securing element is arranged in the same position in the pre-tensioned position and in the release position. The securing element can thus be moved in the same way, in particular rotated about the release axis, when the pivot lever is folded in and when the securing element is released via the actuation. This design has proven particularly effective when actuated via a tool actuation. When the pivot lever is folded in, the actuation, in particular the tool actuation, can be rotated about the release axis by the securing element that comes into contact with the recess.

[0027] In an alternative embodiment, the spring can be designed as a spiral spring, via which the securing element is pretensioned radially to the release axis into the securing position. The securing element can be arranged so as to be movable in a linear direction and in particular radially to the release axis. When the pivot lever is folded in, the securing element can thus be moved in a linear direction against the force of the spiral spring when it comes into contact with the recess via the starting contour. The spiral spring can thus pretension the securing element in a linear direction. The securing element can be movable relative to the actuation, in particular linearly movable. In practice, this embodiment has proven successful when the actuation has a locking cylinder.

[0028] With regard to the design of the locking element, it has also proven advantageous if it is designed as a linearly movable inclined locking latch. This allows the locking element to be automatically retracted in a linear direction against the force of the spring when folding in, thereby transferring it to the pre-tensioned position. The tension of the spring allows the locking element to engage behind the recess or engage into it when the pivoting lever is fully folded into the recess.

[0029] Furthermore, it has proven advantageous if the securing element is arranged in different positions in the pre-tensioned position and in the release position. To release the pivoting lever, the securing element can be rotated about the release axis from the securing position to the release position via the actuation, as already described above. Due to the linear relative movement of the securing element with respect to the actuation, the securing element can therefore be in a different position in the pre-tensioned position, i.e. when the securing element has been moved by folding in the pivoting lever in a linear direction against the force of the spiral spring, than during the rotational movement into the release position. This design can be used in particular if the actuating element has a locking cylinder. This is because the locking cylinder orThe cylinder's rollers generally cannot be rotated over the locking element, especially if there is no matching key in the cylinder. Therefore, it is particularly advantageous in this design if the locking element can also be moved relative to the actuation. This relative movement can then result in the two different positions: the pre-tensioned position and the release position. In the pre-tensioned position, the pivot lever can be folded completely into the recess, and in the release position, the pivot lever can be folded out of the recess.

[0030] As already explained above, it has proven advantageous if the securing element is movable relative to the actuation. The securing element can move relative to the actuation when the pivot lever is folded in or through contact with the recess during folding. Depending on the design of the securing element, the securing element can be rotationally decoupled from the actuation in the case of an annular securing element and linearly decoupled from the actuation in the case of a bar-shaped securing element. A freewheel can therefore be provided that allows relative movement of the securing element relative to the actuation.

[0031] In this context, it has also proven advantageous if the locking element can be moved from the locking position to the preload position relative to the actuating element. The actuating element cannot move when the pivot lever is folded in and the locking element is moved into the preload position. Especially if the actuating element has a locking cylinder, this can remain locked or be locked in advance, regardless of the position of the pivot lever. Even in the locked state, the pivot lever can then be folded into the recess and secured in the folded position by the locking element.

[0032] To enable relative movement, it has proven advantageous if the actuation is connected to the securing element via an intermediate element. The intermediate element can be connected to the actuation in a rotationally fixed manner, and the securing element can be arranged so as to be movable relative to the intermediate element. In this respect, a relative movement between the securing element and the actuation can be achieved via the intermediate element. The intermediate element can therefore allow the securing element to run freely relative to the actuation. On the other hand, the intermediate element can ensure movement of the securing element via the actuation element without any relative movement taking place in this actuation direction. In this respect, a reliable transfer of the securing element from the securing position to the release position can be ensured.It is also possible that the intermediate element is connected in one piece with the actuator or that it is formed in one piece with the actuator.

[0033] According to an advantageous embodiment, the securing element is arranged so as to be rotatable relative to the intermediate element within a predetermined angular range. Any relative movement or rotational movement exceeding the angular range can be prevented. From a structural point of view, the intermediate element can be sleeve-shaped and connected on its inner side to the actuation and on its outer side to the securing element. The intermediate element can thus function as a coupling element between the actuation element and the securing element. The intermediate element can have a non-circular free inner cross-section, in particular a square cross-section. The free inner cross-section can be designed as a receptacle, via which the intermediate element can be connected to the actuation in a rotationally fixed manner.A rotation of the actuation, i.e., the roller of a locking cylinder or the tool actuation, can thus lead to a corresponding rotation of the intermediate element. The securing element can have a cylindrical bore in which the intermediate element is accommodated, allowing it to rotate relative to the securing element within a certain angular range. This bore can thus function as a receptacle. The outer cross-section of the intermediate element can be adapted to the bore of the securing element and have a substantially circular cross-section.

[0034] According to an advantageous development of the securing element, it has proven advantageous if the latter has at least one, in particular two, stops and the intermediate element has at least one, in particular two, stops, by means of which the relative movement of the securing element with respect to the intermediate element can be limited. To limit the relative movement, the stops can each abut one another and thus prevent further relative movement. It can be provided that the intermediate element has one stop and the securing element two, or it can be provided that the intermediate element two stops and the securing element one stop. The relative movement of the securing element can be limited between the securing position and the preloaded position. In this respect, the respective stops can abut one another in the securing position and in the preloaded position.Since the intermediate element can be arranged in the bore of the securing element, the intermediate element and the securing element can be arranged concentrically to each other.

[0035] In an alternative embodiment, the securing element can be linearly guided in the intermediate element. The intermediate element can thus be connected to the actuation on one side, in particular rotationally coupled thereto, and on the other side have a linear guide for connection to the securing element. The linear guide can be designed as a recess extending in a radial direction with regard to the release axis, in which recess the securing element, in particular a latch-shaped one, is movably received. The recess can therefore ensure that the securing element can only be moved in one direction linearly and radially or perpendicular to the release axis relative to the intermediate element and thus also relative to the actuation. The recess can have a base so that a spring, in particular a spiral spring, can be provided between the base and the securing element.The locking element can then be moved back and forth in a linear direction within the recess and against the force of the spring between the locking position and the preloaded position. Upon rotation of the actuating element between the release position and the locking position, the intermediate element can rotate accordingly, so that with a corresponding rotation, the recess and thus also the locking element can also rotate around the release axis.

[0036] From a design perspective, it has proven advantageous for the intermediate element to be bolt-shaped. This allows rotation around the release axis on one side, but also provides sufficient space for the linear guide and for accommodating the locking element. The intermediate element can be rotatably mounted in the mounting element, which is described in more detail below.

[0037] According to another embodiment, it has proven advantageous if the securing element is firmly connected to the actuation. In this case, no relative movement can occur between the securing element and the actuation. The securing element can be connected to the actuation in a rotationally fixed manner. The receptacle for the securing element can, for example, be designed as a non-circular or profiled, in particular square, free inner cross-section. The securing element can thus be arranged in a rotationally fixed, in particular form-fitting, manner on the connecting section of the actuation. Such a form-fitting connection ensures reliable movement coupling between the securing element and the actuation. This embodiment can be used in particular with an annular securing element and a tool actuation.The tool actuation can have a square-shaped section at its rear end and the receptacle for the securing element can be designed accordingly, so that the securing element can be plugged onto the actuation in a rotationally fixed manner and connected to the actuation. If the securing element is pre-tensioned into the securing position by a spring, in particular a torsion spring, the actuation can also be pre-tensioned into the securing position by the spring due to the coupling between the securing element and the actuation. According to an advantageous development of the invention, it is provided that the securing element is movable together with the pivot lever. The securing element can be movable about the pivot axis via the pivot lever. The securing element can be arranged on the pivot lever side, so that the pivot lever is secured to the recess via the securing element when the securing element engages behind the recess orengages in the trough.

[0038] For mounting or connecting the securing element to the pivot lever, it has proven advantageous to provide a mounting element, wherein the securing element is arranged in the mounting element via the actuation, and wherein the mounting element is arranged in the pivot lever. The securing element can thus be connected to the pivot lever via the mounting element and the actuation. In this respect, the actuation can also be connected to the pivot lever and, together with it, can be folded in and out about the pivot axis. The mounting element can be arranged in the lower region of the pivot lever, in particular in the end region of the pivot lever opposite the pivot axis. The mounting element can have a receptacle for the actuation, and the actuation can be detachably arranged in the mounting element.

[0039] Furthermore, it has proven advantageous if the mounting element, the actuation, and the securing element form a securing assembly. This securing assembly can be pre-assembled and thus connected to the pivot lever as a single, integrated component. Advantageously, the securing assembly can be inserted from the front of the pivot lever into a corresponding receptacle in the pivot lever and then connected to the pivot lever, for example, via one or more screw connections. Advantageously, the screw connection is not accessible from the outside; instead, the securing assembly can be screwed to the pivot lever from the rear. The other components of the locking device, such as in particular the spring and the intermediate element, can also be part of the securing assembly and thus pre-assembled.

[0040] Furthermore, the securing assembly can be held together by a single screw. For this purpose, the actuation or the connecting portion of the actuation can have a threaded receptacle, which can be arranged concentrically to the release axis. The intermediate element and / or the securing element can thus be axially mounted, in particular non-rotatably mounted, on the actuation or the connecting portion of the actuation and then connected to each other in the axial direction via a screw.

[0041] With regard to the mounting element, it has further proven advantageous if it is designed as a mounting adapter for mounting various actuations. In this respect, various actuations, such as a tool actuation or an actuation with a locking cylinder, can be used. The actuation can thus be detachably connected to the mounting element. The tool actuation can be rotatably mounted in the mounting element, in particular about the release axis. The locking cylinder can be mounted in the mounting element in such a way that the roller or the locking cylinder core of the locking cylinder can be rotated using a key, but without a suitable key no rotational movement in the mounting element is possible. The locking cylinder can thus have a cylinder housing which is connected to the mounting element in a rotationally fixed manner and in which the roller or the locking cylinder core is rotatably mounted using a suitable key.According to an advantageous development of the invention, it has proven advantageous with regard to the trough if it has a pivoting lever receptacle into which the pivoting lever can be folded. In the folded position, the pivoting lever can be positively locked against rotation about the actuating axis. In the folded position, the trough can laterally surround the pivoting lever in such a way that it cannot be rotated about the actuating axis. The trough can thus have a pivoting lever receptacle into which the pivoting lever can be folded and in which the pivoting lever is locked.

[0042] With regard to the trough, it has also proven advantageous if it has a trough opening. The locking element can be moved through the trough opening when the pivot lever is folded in and then engage behind the trough opening when the folded-in position is reached. The trough opening and the locking element can thus be adapted to one another in such a way that the locking element can pass through the trough opening in the release position and in the pre-tensioned position, but cannot pass through it in the locking position. The trough opening can be arranged in the lower part of the pivot lever holder.

[0043] Furthermore, with regard to the object mentioned above, a closing element, in particular a door, is proposed, wherein the closing element has a locking device configured as described above. With regard to the advantages of the locking device, reference is made to the above explanations.

[0044] Further details and advantages of the invention will be explained in more detail with reference to the accompanying illustrations of an exemplary embodiment. In these illustrations: Fig. 1 shows a perspective side view of a locking device;

[0045] Fig. 2a, 2b a perspective view of the rear side of a recess of the locking device, with the pivot lever in two different positions;

[0046] Fig. 3 is an exploded view of a security assembly with a locking cylinder and an annular security element;

[0047] Fig. 4 is an exploded view of a securing assembly with a tool actuator and an annular securing element;

[0048] Fig. 5 is an exploded view of a security assembly with a locking cylinder and a bolt-shaped security element;

[0049] Fig. 6a to f perspective side views of various components of the locking device.

[0050] The illustration in Fig. 1 shows a locking device 10 with which a locking element, such as a door, can be locked in a closed position, so that in order to open the door it is first necessary to unlock the locking device 10. In order to selectively lock or unlock the locking device 10, it has a pivoting lever 2 which is accessible from the front of the door and which is rotationally coupled via a locking shaft 1.3 extending through the door to a locking element (not shown in the illustrations) arranged on the inside of the door, for example in the manner of a sash tongue. The pivoting lever 2 can be rotated back and forth about an actuating axis B and, due to the connection to the locking element, the latter can be moved accordingly between a locking position which locks the door and an unlocking position which unlocks the door.

[0051] In the locked position, the locking element engages behind the door frame, so that the door is fixed relative to the stationary frame and can no longer be moved. If the locking element is then manually rotated around the actuating axis B by turning the pivot lever 2, the locking element is also moved accordingly until it no longer engages behind the door frame and the door can be opened again.

[0052] The pivot lever 2 is not only rotatable about the actuating axis B, but is also pivotable about a pivot axis W arranged perpendicular to the actuating axis B, as can be seen from the illustration in Fig. 1. In this respect, the pivot lever 2 is rotationally coupled to the locking shaft 1.3 about the actuating axis B, but is also pivotable about the pivot axis W relative to the locking shaft 1.3.

[0053] Furthermore, the locking device 10 comprises a recess 1 which is arranged on the outside of the door and through which the locking shaft 1.3 extends. The recess 1 can also be seen in the illustration in Fig. 1. The recess 1 has a pivot lever receptacle 1.1 into which the pivot lever 2 can be folded during a pivoting movement about the pivot axis W, i.e. the pivot lever 2 is moved relative to the recess 1 during a movement about the pivot axis W. In the folded-in position E, the recess 1 surrounds the pivot lever 2 laterally, so that a rotational movement of the pivot lever 2 about the actuating axis B is then not possible. Rather, the pivot lever 2 is locked in the recess 1 in this folded-in position E. The folded-in position E and the unfolded position A can also be seen in the illustrations in Figs. 2a and 2b.

[0054] Since the pivot lever 2 cannot be rotated about the actuating axis B in the folded position A, it is therefore not possible to unlock the door. To do so, the pivot lever 2 must first be folded out of the recess 1 about the pivot axis W until it is no longer located in the pivot holder 1.1. The recess 1 then no longer surrounds the sides of the pivot lever 2 and can therefore no longer prevent a rotational movement about the actuating axis B. The door can then be unlocked by rotating the pivot lever 2.

[0055] Due to the rotation lock of the recess 1, the door can be reliably protected against unauthorized unlocking as long as the pivot lever 2 cannot be folded out of the recess 1. By securing the pivot lever 2 in the recess 1 or in the pivot lever holder 1.1 of the recess 1, unlocking of the door can be prevented. In order to secure the pivot lever 2 in the recess 1, a securing element 3 is provided, which can be seen in the illustration in Figs. 1 and 2b and which is shown in an enlarged perspective view in Figs. 6b and 6c. This securing element 3 can engage behind the recess 1 or engage in it in the folded-in position E and thus ensure that the pivot lever

[0056] 2 cannot be unfolded around the pivot axis W. The pivot lever 2 is then secured in the recess 1 via the securing element 3 and in order to move this back into the unfolded position A, it is first necessary to transfer the securing element 3 from the securing position S into a release position F, in which the securing element

[0057] 3 no longer engages behind the recess 1. To move the locking element 3 from the locking position S to the release position F, it is connected to an actuation 6, which is accessible from the outside of the door. The actuation 6 thus releases the pivot lever 2 and folds it out of the recess 1.

[0058] Since the securing element 3 engages behind the recess 1 in the securing position S, it must be moved into a position when the pivot lever 2 is pivoted in, in which the securing element 3 does not impair or block a corresponding movement of the pivot lever. Since the pivot lever 2 cannot be folded out of the recess 1 when the securing element 3 is in the securing position S, the pivot lever 2 cannot be folded into the recess 1 if the securing element 3 were to remain in this position.

[0059] However, so that the securing element 3 does not have to be actively moved into a release position F each time the pivot lever 2 is folded into the recess 1, the securing element 3 is designed as a latch spring-loaded into the securing position S. This design ensures that the securing element 3 automatically deflects when the pivot lever 2 comes into contact with the recess 1 when the pivot lever 2 is folded in, so that although a collision with the recess 1 occurs, this collision does not prevent the pivot lever 2 from folding in. The deflection movement of the securing element 3 against the force of a spring 5 tensions the spring when the pivot lever 2 is pivoted in, and the securing element 3 can then automatically latch behind the recess 1 when the pivot lever 2 has been fully pivoted into the recess 1. Overall, a push-to-lock function is thus provided.This means that the pivot lever 2 can simply be folded into the recess 1 and is then automatically secured to or in the recess 1 via the securing element 3. In order to fold the pivot lever 2 out of the recess 1 again, it is first necessary to manually move the securing element 3 from the outside of the door into the release position F using the actuation 6.

[0060] The securing element 3 and the actuation 6 are connected to the pivot lever 2 via a mounting element 4 or are arranged via the mounting element 4 in the end of the pivot lever 2 opposite the pivot axis W. As can be seen from the illustration in Fig. 1, the pivot axis W is arranged in the upper area of ​​the pivot lever 2 and the mounting element 4 is arranged accordingly in the lower area of ​​the pivot lever 2. The mounting element 4 is also shown in the illustrations in Figs. 6e and 6f.

[0061] The mounting element 4, together with the actuation 6 and the securing element 3, forms a securing assembly 9, which is shown in the illustration in Fig. 3, 4 and 5. This securing assembly 9 can be pre-assembled and connected to the pivot lever 2 as a single component. For this purpose, the securing assembly 9 can be inserted from the front into the pivot lever 2 or into a corresponding receptacle in the pivot lever 2 and then connected to the pivot lever 2 via a screw from the back of the pivot lever 2. The securing assembly 9 and thus also the securing element 3 and the actuation 6 are then pivoted in the assembled state together with the pivot lever 2 about the pivot axis W and also rotated together with the pivot lever 2 about the actuation axis B for locking or unlocking.

[0062] 3, 4 and 5, differently designed security assemblies 9 are each shown in an exploded view. The main difference lies primarily in the design of the actuation 6 and the security element 3. In the exemplary embodiment shown in Fig. 3, the actuation 6 has a locking cylinder 6.1 with a roller that can be rotated about a release axis V using a key. The roller can only be rotated if a suitable key has been inserted into the locking cylinder 6.1. The locking cylinder 6.1 has a connecting section 6.3 with a square cross-section at its rear end, via which it can be connected to the security element 3 in order to move the latter from the securing position S into the release position F.

[0063] However, as can also be seen from the illustration in Fig. 3, the actuation 6 or the locking cylinder 6.1 is not connected directly to the securing element 3, but indirectly via an intermediate element 7. This intermediate element 7 has a sleeve-shaped geometry with a square inner cross-section and a round outer cross-section. The square inner cross-section functions as a receptacle 7.2 for the positively locking reception of the square connecting section 6.3 of the actuation 6, so that the intermediate element 7 can be rotated about the release axis V in parallel with the roller via the key.

[0064] The securing element 3 has a ring-shaped geometry and a cylindrical receptacle 3.2 that is arranged concentrically to the release axis V. This receptacle 3.2 is adapted to the outer cross-section of the intermediate element 7, so that the intermediate element 7 can be mounted in the receptacle 3.2 of the securing element 3 with virtually no play. The intermediate element 7 is not firmly connected to the securing element 3, but the securing element 3 can have a certain amount of free play relative to the intermediate element 7 and thus also relative to the actuation 6, i.e. the securing element 3 can move on the intermediate element 7 about the release axis V without the intermediate element 7 moving along with it. However, this free play is limited by two stops 7.1 arranged on the outside of the intermediate element 7. The illustration in Fig.Figure 6d shows the intermediate element 7 in two different perspective side views, revealing the two stops 7.1. The two stops 7.1 are spaced approximately 180 degrees apart in the circumferential direction and are thus opposite each other with respect to the release axis V. The securing element 3 also has a stop, or its receptacle 3.2 is designed such that rotational movement of the securing element 3 relative to the intermediate element 7 is limited by the stops 7.1.

[0065] In the securing position S, the stop of the securing element 3 rests against one of the stops 7.1, so that the securing element 3 can be rotated into the release position F by turning the key or rotating the roller of the locking cylinder 6.1 about the release axis V. In this position, the pivot lever 2 can then be folded out of the recess 1, as already explained above. However, if the pivot lever 2 has already been folded out of the recess 1 and the securing element 3 is in the securing position S, it is not necessary to first turn it into the release position F before folding it in. This is because if the securing element 3 comes into contact with the recess 1 during folding, it is rotated about the release axis V into a pre-tensioned position K relative to the intermediate element 7 and thus also relative to the actuation 6. The actuation 6 does not move during this process. This movement can be achieved via the second stop 7.1 of the intermediate element 7.

[0066] 3. When the pivot lever 2 is folded in and the recess 1 of the securing element 1 comes into contact with the recess 1, the securing element 3 is pre-tensioned into the securing position S.4 and has thus overcome the recess 1, the spring 5 relaxes and the securing element 3 is automatically transferred into the securing position S. The spring 5 is also arranged concentrically to the release axis V and is connected on one side to the securing element 3 and on the other side to the mounting element 4 which is arranged stationary relative to the securing element 3.

[0067] So that the securing element 3 can be rotated from the securing position S into the pre-tensioning position K when the pivot lever 2 is folded in and upon contact with the recess 1, the securing element 3 is designed as a rotatably movable inclined locking latch in the embodiment shown in Fig. 3. For this purpose, the securing element 3 has a starting contour 3.1, which is designed as a radial projection tapering in the circumferential direction. Due to the taper or the flank of the radial projection acting as a starting bevel, the securing element 3 deflects upon contact with the recess 1 and is rotated about the release axis V into the pre-tensioning position K.

[0068] On the side of the trough 1, a starting contour 1.2 is also provided, which can be seen in the illustration in Fig. 6a without the other components of the locking device 10. This is also designed as a starting bevel or has a starting bevel that is adapted to the starting contour 3.1 of the securing element 3 in such a way that the securing element 3 rotates away when the pivot lever 2 is folded in, so that it can pass through the trough 1 or the trough opening 1.4 and then engage behind it.

[0069] In order to connect the securing element 3 in the axial direction to the actuation 6, the actuation 6 has a bore at its connecting section 6.3 (not visible in the illustrations due to the perspective), into which a screw 8 can be screwed, which is shown in the exploded views of Figs. 3 and 4. This screw 8 then holds the actuation 6 and the securing element 3 and thus also the other components of the securing assembly 9, i.e., the intermediate element 7 and the spring 5, together and fastens them together to the mounting element 4.

[0070] The illustration in Fig. 4 now shows a further exemplary embodiment which differs from the exemplary embodiment shown in the illustration in Fig. 3 essentially in that a tool actuation 6.2 is used as the actuation 6 and that no intermediate element 7 is provided. Due to the lack of the intermediate element 7, it is therefore not possible in this embodiment for the securing element 3 to rotate relative to the actuation 6, i.e. there is no freewheeling of the securing element 3. Rather, the securing element 3 has a receptacle 3.2 which is designed in the same way as the receptacle 7.2 of the intermediate element 7 and via which the securing element 3 can be arranged in a form-fitting manner on the square-shaped connecting section 6.3 of the actuation 6.

[0071] The securing element 3 is preloaded into the securing position S by the spring 5, so that due to the direct rotational coupling of the securing element 3 and the actuation 6, the actuation 6 is also preloaded into the securing position S. The actuation 6 is designed as a tool actuation 6.1 and can therefore be rotated using a tool, such as a switch cabinet key. Since in the case of the locking cylinder 6.1 it is not possible to turn the roller without a suitable key, a corresponding freewheel of the type described above is required in the design according to Fig. 3. The tool actuation 6.1, on the other hand, can also be easily rotated about the release axis V by the securing element 3, so that in this design no freewheel is required and the actuation 6 and the securing element 3 are directly connected to one another.

[0072] When the pivot lever 2 is folded into the recess 1 for securing and the securing element 3 is briefly rotated from the securing position S into the pre-tensioned position K, the actuation 6 rotates accordingly due to the positive rotary coupling between the securing element 3 and the actuation 6. When the pivot lever 2 is then completely folded in and is in the folded position E, the securing element 3 and thus also the actuation 6 are driven by the spring 5 and rotated back into the securing position S, in which the securing element 3 engages behind the recess 1 or the recess opening 1 .4 and the pivot lever 2 is prevented from moving. With regard to the other components of the locking device 10 or the securing assembly 9, reference is made to the above explanations.

[0073] The example shown in Fig. 5 differs from the example according to Fig. 3 by a differently designed intermediate element 7 and a differently designed securing element 3. Firstly, the securing element 3 is again indirectly connected to the actuation 6 or to the rotatable connecting section 6.3 of the locking cylinder 6.1 and can be rotated back and forth about the release axis V via the actuation 6. The sequence for releasing the pivot lever 2 therefore does not differ from that already described above with regard to Fig. 3.

[0074] Due to the use of a locking cylinder 6.1, a freewheel or relative movement is again provided between the securing element 3 and the locking cylinder 6.1 or the actuation 6, however, the securing element 3 is now movable in a linear direction and thus radially to the release axis V relative to the actuation 6. Due to the linear movement, the spring 5 is therefore not designed as a torsion spring, but as a spiral spring, as can be seen from Fig. 5.

[0075] The starting contour 3.1, which comes into contact with the recess 1 when the pivot lever 2 is folded in, is arranged at the outer end of the securing element 3. This is designed as a starting slope so that when the pivot lever 2 is folded in, the securing element 3 is moved linearly in the direction of the release axis V. The spring 5 is tensioned and the securing element 3 is moved into the intermediate element 7. This allows the securing element 3 or the securing assembly 9 to be guided through the recess opening 1.4 and as soon as the pivot lever 2 has reached the folded-in position E, the securing element 3 can engage behind the recess 1. The spring 5 is released and the securing element 3 is moved in a linear direction behind the recess 1.

[0076] To allow for such a linear movement, the securing element 3 is not arranged concentrically with respect to the intermediate element 7. Rather, the intermediate element 7 has a linear guide 7.3, which is designed as a lateral recess whose geometry is adapted to the securing element 3. The securing element 3 can be moved back and forth in the linear guide 7.3. The spring 5 is arranged in the linear guide 7.3 behind the securing element 3, so that when the securing element 3 moves, the spring 5 is tensioned or released.

[0077] From a structural point of view, the intermediate element 7 is bolt-shaped and rotatably mounted in the mounting element 4. Furthermore, the intermediate element 7 is secured in the axial direction in the mounting element 4, so that an additional screw 8 is not absolutely necessary for connecting the intermediate element 7 and the actuator 6.

[0078] In terms of construction, the securing element 3 in the embodiment shown in Fig. 5 is designed as a linearly movable inclined locking latch. The securing element 3 has a substantially bar-shaped geometry and can be moved radially toward or away from the release axis V along its longitudinal axis in a linear direction. For further details, please refer to the above explanations.

[0079] In summary, the automatic movement of the securing element 3 when the pivot lever 2 is folded in enables very simple locking of the door. The movement of the securing element 3 into the pre-tensioned position K creates a push-to-lock function, so that no key is required to lock the door. Instead, the pivot lever 2 simply needs to be folded into the recess 1 to lock the door. The pivot lever 2 is then reliably secured to the recess 1 via the securing element 3. Only after the securing element 3 has been released can it be folded out again from the recess 1 using a key or a suitable tool. It can then be rotated around the actuating axis B to unlock the door. Reference numerals:

[0080] 1 trough

[0081] 1 .1 Swivel lever holder

[0082] 1.2 Starting contour

[0083] 1.3 Closing shaft

[0084] 1 .4 Trough opening

[0085] 2 swivel levers

[0086] 3 Securing element

[0087] 3.1 Starting contour

[0088] 3.2 Recording

[0089] 4 Mounting element

[0090] 5 spring

[0091] 6 Operation

[0092] 6.1 Lock cylinder

[0093] 6.2 Tool operation

[0094] 6.3 Connecting section

[0095] 7 Intermediate element

[0096] 7.1 Stop

[0097] 7.2 Recording

[0098] 7.3 Linear guide

[0099] 8 screw

[0100] 9 Fuse assembly

[0101] 10 Locking device

[0102] B Actuating axis

[0103] V release axis

[0104] W swivel axis

[0105] A unfolded position

[0106] E folded position

[0107] F Release position S Locking position

[0108] K Preload position

Claims

Patent claims: 1 . Locking device for locking a locking element, in particular a door, with a recess (1 ), a pivoting lever (2) which is hingedly mounted on the recess (1), which is rotatable about an actuating axis (B) in an extended position (A) and is non-rotatably locked in the recess (1) in a folded-in position (E), and a securing element (3) which secures the folded-in pivoting lever (2) in a securing position (S) against folding out, characterized in that the securing element (3) is designed as a latch which is spring-biased in the securing position (S).

2. Locking device according to claim 1, characterized in that the securing element (3) and the recess (1) are designed such that the securing element (3) engages behind the recess (1) to secure the pivot lever (2) when the pivot lever (2) is folded in.

3. Locking device according to one of claims 1 or 2, characterized in that the securing element (3) has a starting contour (3.1) which pre-tensions the securing element (3) into a pre-tensioning position (K) when the pivoting lever (2) is folded into the recess (1).

4. Locking device according to one of the preceding claims, characterized in that the securing element (3) is annular and the starting contour (3.1) is designed as a radial projection tapering in the circumferential direction.

5. Locking device according to one of claims 1 to 3, characterized in that the securing element (3) is designed in the shape of a bolt and the starting contour (3.1) is arranged at one end of the securing element (3).

6. Locking device according to one of the preceding claims, characterized in that the securing element (3) can be rotated back and forth about a release axis (V) between a securing position (S) and a release position (F) via an actuation (6), wherein the pivot lever (2) can be folded out of the recess (1) in the release position (F).

7. Locking device according to claim 6, characterized in that the actuator (6) has a locking cylinder (6.1) so that the securing element (3) can be rotated about the release axis (V) using a suitable key.

8. Locking device according to claim 6, characterized in that the actuation (6) has a tool actuation (6.2), so that the securing element (3) can be rotated about the release axis (V) via a tool.

9. Locking device according to one of the preceding claims, characterized in that the securing element (3) is prestressed into the securing position (S) by a spring (5), wherein the spring (5) is designed as a torsion spring or wherein the spring (5) is designed as a spiral spring, via which the securing element (3) is prestressed radially to the release axis (V) into the securing position (S).

10. Locking device according to one of claims 6 to 9, characterized in that the securing element (3) is movable relative to the actuation (6).

11. Locking device according to one of claims 6 to 10, characterized in that the actuation (6) is connected to the securing element (3) via an intermediate element (7), wherein the intermediate element (7) is connected to the actuation (6) in a rotationally fixed manner and wherein the securing element (3) is arranged to be movable relative to the intermediate element (7).

12. Locking device according to claim 11, characterized in that the securing element (3) has at least one, in particular two, stops (3.3) and the intermediate element (7) has at least one, in particular two, stops (7.1), via which the relative movement of the securing element (3) with respect to the intermediate element (7) can be limited.

13. Locking device according to one of claims 10 or 11, characterized in that the securing element (3) is linearly guided in the intermediate element (7).

14. Locking device according to one of claims 6 to 10, characterized in that the securing element (3) is firmly connected to the actuation (6).

15. Closing element, in particular a door, with a locking device (10) according to one of the preceding claims.

Images