Electromechanical locking device

Abstract

The present invention relates to an electromechanical locking device (1) for a locking element, having a stator (10), a rotor (30), a locking element (31) and a blocking element (51), wherein the rotor (30) is supported in the stator (10), wherein the locking element (31) is movable between a first position and a second position, wherein the blocking element (51) can assume an initial position and a release position, wherein in the initial position, the blocking element (51) prevents the movement of the locking element (31) into the second position, and in the release position, the blocking element (51) allows the movement of the locking element (31) into the second position. According to the invention, the locking device (1) comprises a spring element (80), wherein the spring element (80) cooperates with the blocking element (51) such that when the blocking element (51) moves from the initial position to the release position, the spring element (80) is at least temporarily tensioned, such that the spring element (80) presses the blocking element (51) back towards the initial position.

Description

Field of the Invention

[0001] The present invention relates to an electromechanical locking device according to the preamble of claim 1. Such a locking device mainly has a stator and a rotor, wherein the rotor is rotatably supported in the stator. In addition, a locking element and a blocking element are provided, wherein the locking element can move between a first position and a second position, and wherein the blocking element can occupy an initial position and a release position, wherein in the initial position, the blocking element prevents the locking element from moving into the second position, and in the release position, the blocking element allows the locking element to move into the second position. In addition, the present invention relates to a closing device equipped with the locking device according to claim 15. The closing device exists in a large number of embodiments, for example, in the form of a lock cylinder for a door, a gate, or a window, for example. Background Art

[0002] EP 1 904 702 B1 discloses a locking device having a locking disk as a blocking element. The locking disk is rotated by an electric actuator and enables the movement of the locking element. In the locking device, a spring-loaded rotating element is provided, which prevents the locking disk from rotating into the unlocking position when no key is inserted, and when the key is removed and this is not feasible by the electric actuator, the initial position of the locking disk is re-established by the rotation of the rotating element. The disadvantage is that the rotation of the rotating element, for example, by an unauthorized key, releases the rotation of the locking disk, so that the locking disk can be rotated tamperingly, so that the release position of the locking disk is reached. Summary of the Invention

[0003] Therefore, the object of the present invention is to develop such a locking device so that the locking device, in particular the blocking element, is provided with very good anti-tampering protection.

[0004] The above object is achieved by independent claim 1. Advantageous improvements of the device are given in the dependent claims, the description and the drawings. In addition, the above object is also achieved by the closing device according to claim 15. Advantageous improvements of the closing device are given in the description and the drawings. The features and details described in connection with the locking device according to the present invention are also applicable here in connection with the closing device according to the present invention and vice versa. Here, the features mentioned in the description and in the claims can be individually or in combination important for the invention. By means of the locking device according to the present invention, the locking effect of, for example, a door, a gate, or a window can be achieved.

[0005] According to the present invention, a locking device is provided, which has a stator and a rotor, a locking element and a blocking element. The rotor is rotatably supported in the stator. The locking element is particularly linearly movably supported in a first member and is movable between a first position and a second position. Here, an initial position and a release position can be occupied by the blocking element, wherein in the initial position, the blocking element prevents the locking element from moving into the second position, and in the release position, the blocking element allows the blocking element to move into the second position. To achieve the object on which the present invention is based, it is proposed here that the locking device includes a spring element, wherein the spring element acts together with the blocking element such that when the blocking element moves from the initial position to the release position, the spring element is at least temporarily tensioned, so that the spring element presses the blocking element back towards the initial position.

[0006] The core idea of the present invention is to use the spring element to apply a force to the blocking element, wherein the spring element applies a smaller force to the blocking element in the initial position than in the release position and / or on the path to the release position. The expression "smaller force" includes "no force".

[0007] The advantage of the locking device according to the present invention is that in the case of mechanical tampering, the spring element presses the blocking element back into the initial position. This avoids the blocking element reaching the release position without authorization for the locking element.

[0008] It can be proposed that the spring element acts directly on the blocking element.

[0009] The locking device, in particular the rotor, can be connected or connectable to a spherical handle or to a key in order to transmit mechanical torque to the rotor.

[0010] The locking device can include a key channel for receiving a key. Preferably, the blocking element and / or the spring element are arranged behind the key channel. "Behind" should be understood here from the perspective of the user operating the locking device.

[0011] It is conceivable that a wall bounds the key channel towards the rear. "Rear" is understood here from the perspective of the user operating the locking device. In other words, the end of the key channel is bounded by the wall. Behind the wall, there are arranged the blocking element, the spring element and / or the locking element. Thus, the wall is arranged between on the one hand the blocking element, the spring element and / or the locking element and on the other hand the key channel. The wall protects the blocking element and / or the locking element from tampering.

[0012] The blocking element is preferably pre-tensioned into the initial position in the release position. The release position can, for example, pre-tension the spring element more strongly as a temporary position than in the initial position. In particular, the initial position can be regarded as a monostable position of the blocking element or as one of the bistable positions.

[0013] Advantageously, the spring element can be used to mechanically move the blocking element back into the initial position by the spring force of the spring element after the release position has been occupied.

[0014] The electromechanical locking device can include an electromechanical actuator. The actuator can in particular be configured as an electric motor.

[0015] Preferably, the actuator is used to move the blocking element from the initial position, in particular rotate it, into the release position. Here, the actuator can move the blocking element into the release position and / or tension the spring element such that the spring element moves the blocking element into the release position.

[0016] The actuator is used to move the blocking element into the second position.

[0017] The actuator can be used to ensure that the drive element is movable when the rotor rotates. For this, the locking and / or setting coupling can be disengaged.

[0018] Preferably, it is provided that in the first position, the blocking element prevents the rotor from rotating in the stator, and in the second position, the blocking element enables the rotor to rotate in the stator.

[0019] The movement of the locking element preferably corresponds to a reciprocating movement towards and away from the blocking element.

[0020] The movement of the blocking element is preferably a rotational movement about the axis of rotation, and the movement of the locking element is towards or away from the axis of rotation.

[0021] It can be provided that the blocking element is arranged on the output shaft of an actuator configured as an electric motor. Preferably, the actuator moves the blocking element from the initial position into the release position. Preferably, the actuator rotates the blocking element from the initial position into the release position. This allows a very space-saving embodiment.

[0022] Preferably, the blocking element includes a cutout, in the second position, the locking element is arranged in the cutout. Conversely, in the first position, the blocking element is outside the cutout. In the release position, the blocking element is arranged such that the cutout is opposite the locking element such that the locking element can be moved into the cutout. In the initial position, however, the cutout is arranged such that the cutout faces away from the locking element such that the locking element cannot be moved into the cutout.

[0023] Preferably, the blocking element can occupy a position between the release position and the initial position, in which position the locking element cannot be moved into the cutout. The following position is referred to as the blocking position, in which position the locking element cannot be moved into the cutout. The initial position can here be regarded as one of the blocking positions.

[0024] The blocking element can for example be configured in a disk shape.

[0025] It is possible that the blocking element is arranged in the rotor. It is possible that the actuator is arranged in the rotor. It is possible that the locking element is arranged in the rotor in the second position.

[0026] The stator preferably includes a locking element recess, and the locking element is arranged in the locking element recess in the first position. In the first position of the locking element, the rotation of the rotor is particularly prevented by the locking element engaging in the locking element recess. In the second position, the locking element is outside the locking element recess.

[0027] Preferably, the blocking element is movable from an initial position in a first direction, in particular in a first rotational direction, and in a second direction, in particular in a second rotational direction. The spring element and the blocking element preferably act together such that the spring element is tensioned at least temporarily when moving in the first direction and when moving in the second direction. This makes mechanical tampering difficult.

[0028] The blocking element can include a bolt for tensioning the spring element.

[0029] The spring element can be configured as a torsion spring.

[0030] The spring element can have a torsion leg and a abutment leg bent away therefrom, wherein the abutment leg can be pre-tensioned against the bolt of the blocking element.

[0031] By the position of the bolt relative to the spring element, an increase in spring tension, i.e., the characteristic curve of the spring element tension, can be preset.

[0032] It can be proposed that the bolt has a non-circular outer contour, and the increase in spring tension, i.e., the characteristic curve of the spring element tension, is affected by the outer contour. For example, the bolt can be configured elliptically, kidney-shaped, or bolt-shaped.

[0033] Preferably, it is proposed that the blocking element can be rotated from the initial position by a first rotation angle in a first rotational direction into a release position, and the blocking element can be rotated from the initial position by a second rotation angle in a second rotational direction into the release position. The second rotation angle is preferably smaller than the first rotation angle.

[0034] It can be proposed that the restoring force of the spring is temporarily stronger when rotating in the second rotational direction than when rotating in the first rotational direction. Thereby, in the second rotational direction along which the release position is reached faster by mechanical tampering, the tampering is made difficult by a strongly increased spring tension.

[0035] Preferably, the further the blocking element moves away from the initial position, the greater the tension of the spring element in the characteristic curve of the spring element tension. The characteristic curve can in particular rise more strongly in the second rotational direction.

[0036] Preferably, the locking device includes an electromechanical actuator. The actuator is configured to move the blocking element in a direction towards the release position against the force of the spring element, in particular to rotate. Preferably, the spring element is tensioned such that the spring element can rotate the blocking element back into the initial position. Thus, the spring element is configured such that the blocking element moves from the release position into the blocking position and then moves, in particular rotates, into the initial position. Thereby, the actuator can tension the spring element such that a mechanical reset into the initial position of the blocking element takes place.

[0037] The locking device can include a stop. Additionally advantageously, the blocking element abuts against the stop in the release position. Here, the spring element can press the blocking element against the stop. Additionally or alternatively, it is possible to prevent or reduce the blocking element from bouncing back by the stop during movement into the release position. In this regard, the spring element stabilizes the blocking element in its rotational position against the stop.

[0038] Preferably, it is proposed that the stop is arranged behind the key channel. A wall portion is arranged between the stop and the key channel.

[0039] The blocking element can abut against the stop by means of a holding cam of the blocking element, wherein the release position of the blocking element is reached. The spring element presses the blocking element together with the holding cam against the stop in order to maintain the release position.

[0040] The arrangement in which the spring element interacts with the blocking element, in particular the additional advantage of pressing the blocking element against the stop in the release position, can be that the electromechanical actuator has to be controlled in a simple manner, for example by means of only temporary energization. Thereby, the blocking element can be rotated, and the spring element ensures the occupation and maintenance of the desired release position of the blocking element, in particular ensures the maintenance of the corresponding rotational position of the blocking element. As long as the spring element can place the blocking element, in particular rotate it, or has placed it, in particular rotated it, into the desired release position, then the energization of the electromechanical actuator can be ended, and the spring element ensures the maintenance of the release position of the blocking element.

[0041] Preferably, it is proposed that the stop preferably moves away from the position against which the blocking element abuts by a mechanical movement of the user, in particular preferably in effective connection with the key, such that the blocking element moves back into the initial position again.

[0042] It can be proposed that if, by pulling back the stop, for example, and releasing the abutment of the holding cam against the stop and being able to rotate freely, the holding cam of the blocking element no longer abuts against the stop, then the blocking element moves from the release position into the blocking position, in particular into the initial position.

[0043] Preferably, it is proposed that the actuator rotates the blocking element from an initial position beyond a dead center in the direction of the release position under the condition of increasing tension of the spring element, wherein after exceeding the dead center, the spring element moves the blocking element into the release position or moves it together into the release position.

[0044] It can be proposed that the spring force of the spring element passes through the dead center when the blocking element rotates from the initial position into the release position. Before the dead center, the spring element presses the blocking element into the initial position and after the dead center the spring element presses the blocking element into the release position. Thus, the blocking element can rest in the initial position just as it abuts against a stop in the release position. Activation of the actuator is only obligatorily necessary to rotate the blocking element from a first initial position beyond the dead center. Continued rotation actuates or supports the spring element. Thus, the actuator only has to pre-rotate the blocking element until it exceeds the dead center, while the spring element is tensioned, wherein the final rotation of the blocking element into the release position is only caused or co-caused by the spring element. This makes it possible to not have to control the actuator as precisely.

[0045] Another advantage is achieved by the rotational movement of the blocking element from the initial position of the blocking element into the release position and back from the release position to the initial position taking place in the same rotational direction. The advantage is in particular the simple control of an electromechanical actuator, which can be designed as a motor and which is always activated in the same direction of movement, in particular the same rotational direction, for the rotational movement.

[0046] The locking device further comprises an extension element, wherein the extension element can move between a pushed-in position and a pulled-out position.

[0047] The extension element in particular occupies the pushed-in position when the key is inserted, and if the key is pulled out again, the extension element is retracted into the pulled-out position. Thus, the range of action of the key is extended by the extension element. Preferably, the extension element passes through a wall portion. Thus, the extension element can interact on the one hand with the key and on the other hand with a component protected by the wall portion, in particular the blocking element.

[0048] The extension element remains in the locking device after the key has been pulled out.

[0049] The extension element is preferably designed to move between the pulled-out position and the pushed-in position in the axial direction, in particular to be linearly pushed. For example, the rotor can comprise a guide for the extension element.

[0050] If the extension element moves linearly, the extension element can alternatively be referred to as a slide.

[0051] The extension element and the blocking element can be configured such that, in the pushed-in position, the extension element prevents the blocking element from moving from the release position to the blocking position, in particular to the initial position, wherein in particular, the extension element prevents: the blocking element from moving from the release position to the blocking position by the force of the spring element.

[0052] For this purpose, the extension element preferably has a stop, and the blocking element includes a holding cam, which is held against the stop by the spring element in the release position.

[0053] Preferably, the extension element and the blocking element are configured such that, in the pulled-out position, the extension element releases the movement of the blocking element from the release position to the blocking position, in particular to the initial position. The extension element preferably disengages from the effective connection with the blocking element in the pulled-out position, such that the movement of the blocking element from the release position to the blocking position takes place by the force of the spring element.

[0054] In the pushed-in position, the holding cam can bear against the stop, and in the pulled-out position of the extension element, the holding cam can rotate freely, such that the blocking element cannot be held by the stop and the blocking element cannot maintain the release position.

[0055] This particularly ensures that only when the extension element is set in the pushed-in position, in particular when the key is inserted, can the release position of the blocking element be occupied.

[0056] The blocking element preferably rotates in the range of a partial circle that is part of a full rotation in the rotational direction each time the actuator is activated, wherein the spring element only then precisely positions the blocking element in the release position when the holding cam abuts against the stop. If the stop is missing, in particular when the extension element guides out of the movement space of the holding cam, then the initial position is occupied by the force of the spring element, which reaches the initial position as a steady state position.

[0057] Thus, for example, if the electromechanical actuator is activated during an electrical tampering without inserting the key and the extension element does not move into the movement space of the holding cam by means of the stop, then the blocking element is placed in a rotational movement, yet always reaches the initial position again, in which the locking element cannot be guided out of the locked position and the initial locked position is maintained by the spring element under the condition of acting on the blocking element.

[0058] The blocking element is preferably pressed against the extension element by the spring element at least with a force component perpendicular to the axial direction, and the extension element prevents the blocking element from moving from the release position to the blocking position. In this position, preferably, the holding cam of the blocking element abuts against the stop. This makes it possible for the pushed-in position to have a tolerance for errors.

[0059] The extension element preferably prevents the movement of the blocking element from the initial position to the release position in at least one rotational direction, in particular at least in the second rotational direction, in the pushed-in position. Thereby, additional anti-tampering protection is achieved.

[0060] The extension element is furthermore used to move the coupling part into an effective connection with the driving part.

[0061] In particular, the coupling part remains in an effective connection with the driving part when the extension element moves from the pushed-in position to the pulled-out position. Additionally or alternatively, the extension element can move the coupling part in the axial direction without a form-fit.

[0062] The extension element can be configured and / or interact with the coupling part such that the extension element prevents the coupling part from moving out of the effective connection with the driving part in the pushed-in position and allows the removal of the effective connection between the coupling part and the driving part in the pulled-out position.

[0063] Preferably, it is proposed that torque can be transmitted from the rotor to the coupling part, while the extension element does not transmit torque. Thereby, it is possible for the extension element to be configured finely and to save structural space.

[0064] The locking device can include an electronic control device, in particular a processor and / or a controller, in order to control the actuator. The control device can also include an electronic memory.

[0065] The locking device also includes a transmission device for transmitting data and / or electrical energy from the key to the locking device.

[0066] The transmission device can be configured as a sending and receiving unit, as a biosensor, as a keyboard for PIN input and / or as a contact element for electrical contact, in particular with an electronic key. The sending and receiving unit can be configured to communicate with a mobile unit, in particular a mobile phone or a card, by means of wireless near-field communication, in particular RFID or low-power Bluetooth.

[0067] The transmission device can be used to send and / or receive electronic data, which enables the determination of the user's authorization for unlocking a spatial area. For example, the transmission device can receive an authorization code and / or an authorization time window, which is checked by the control device. If the check ends with a positive result, then the actuator can be controlled in order to effect the movement of the blocking element. Thereby, the locking element can reach the second position.

[0068] Alternatively, the transmission device can transmit an opening command. Due to the opening command, the actuator can be controlled in order to effect the movement of the blocking element. For example, due to the opening command, the locking element can move electromechanically into the second position or the movement can be released electromechanically into the second position.

[0069] The transmission device is particularly additionally or alternatively used to transmit electrical energy to the locking device. The electrical energy can be provided for operating the actuator and / or for controlling the device.

[0070] Preferably, the locking device part has no mechanical coding. That is, the closing authorization is obtained only through electronic data, which is sent and / or received by the locking device with the aid of the transmission device.

[0071] Preferably, when the key is removed, the transmission of data and / or electrical energy is interrupted. Thereby, the activation of the actuator is also not possible. By interrupting the transmission of electrical energy, it is preferably provided that the blocking element is mechanically reset to its initial position by a spring element.

[0072] Additionally or alternatively, it can be provided that the extension element engages form-fittingly in the key such that when the key is removed, the extension element always moves from the inserted position to the removed position. This ensures that the extension element moves from the inserted position to the removed position every time the key is removed. This ensures that the extension element releases the blocking element from the release position to the blocking position, in particular to the initial position, by means of a spring element.

[0073] The locking device is preferably used to latch a spatial area. The spatial area is particularly fixed. For example, the spatial area can be a building space, such as an office, a residence or a house, or a storage space, such as a cabinet, a mailbox, a box, a safe or a drawer. In particular, the locking device is used to be used in or arranged at a locking element in the form of a door, such as a room door, a residential door, a room door, a cabinet door, a mailbox flap or the front side of a drawer. Preferably, the stator of the locking device is at least indirectly torsionally connected to the locking element here.

[0074] The locking device can have a drive element or can be connected to a drive element. The rotation of the rotor of the locking device serves to rotate the drive element.

[0075] The drive element is preferably configured as an eccentric. The drive element can be configured as a locking projection. It is possible that the rotation of the drive element in a first direction serves to transfer the locking element from the unlocked state to the latched state. It is also possible that the rotation of the drive element in a second direction serves to transfer the locking element from the latched state to the unlocked state. For example, the locking device can be at least indirectly inserted into a mortise lock. The rotation of the drive element can cause the movement of the bolt of the mortise lock in this case. Thus, the rotation of the drive element in a first direction can cause, for example, the bolt to move out, thereby causing the latched state of the locking element. The rotation of the drive element in a second direction can cause, for example, the bolt to move in, thereby causing the unlocked state of the locking element.

[0076] Alternatively, the drive element itself can be used as a locking bolt. Thus, rotation of the drive element in the first direction can cause, for example, the latch position of the drive element to be occupied. Rotation of the drive element in the second direction can cause, for example, the unlocking position of the drive element to be occupied.

[0077] In a preferred embodiment, the locking device is configured as a mounting device. The mounting device is configured to be inserted into the housing of the closing device. Preferably, the mounting device is torsionally fixed in the housing of the closing device by means of fixing elements. Thus, in the mounted state of the closing device, the stator of the locking device and the housing of the closing device form a common fixing unit. The housing of the closing device is particularly used for insertion into or placement at a locking element. The closing device can be configured, for example, as a lock cylinder, such as a double lock cylinder or a half lock cylinder, as a spherical handle lock cylinder, as a furniture lock cylinder or as a padlock.

[0078] If the locking device is configured as a mounting device, then preferably it is proposed that the locking device includes a connecting section for connection to the drive element.

[0079] Alternatively, it can be proposed that the locking device itself is configured as a lock cylinder, such as a double lock cylinder or a half lock cylinder, as a spherical handle lock cylinder, as a furniture lock cylinder or as a padlock. Here, the stator is simultaneously used as the housing for insertion into or placement at a locking element.

[0080] Alternatively, the locking device can be provided for a switching element. Thus, the switching element can only be operated by an authorized user. The drive element of the switching element can be used here to operate a switch or a button. Thus, the locking device can be used in a switching element, particularly in a key switch, or corresponds to a key switch.

[0081] In particular, it can be proposed that when the blocking element is in the released position, the rotation of the rotor enables, in particular causes, the movement of the locking element into the second position. Here, the first abutment surface of the stator in particular presses the locking element into the second position.

[0082] The second abutment surface of the stator is in particular configured such that the locking element is spaced apart from the blocking element by abutting against the second abutment surface. Thereby, damage to the locking device can be prevented.

[0083] The blocking element and the locking element can be spaced apart from each other in the first position of the locking element, in particular when the locking element is unloaded and / or when the locking element abuts against the second abutment surface.

[0084] In particular, by spacing the locking element apart from the blocking element by the second abutment surface, it is feasible to support the blocking element on one side. Thus, the output shaft can be supported in the actuator on only one side.

[0085] In particular, in order to space apart the blocking element and the locking element in time when they are in contact with the second contact surface, the locking element can include a protruding top surface. The second contact surface can be configured to cooperate therewith. The top surface and the second contact surface are configured such that when the locking element is in contact with the second contact surface, the second contact surface is located between the top surface and the blocking element.

[0086] Alternatively or additionally, the movement of the locking element between the first and second positions defines a movement direction, wherein the top surface and the second contact surface are configured inclined to the movement direction of the locking element. Thereby, the force acting on the locking element can be guided into the stator.

[0087] Preferably, the stator includes a stator element that has a first contact surface and is movably supported in the rest of the stator. In particular, it can be achieved that, by the movement of the stator element, the locking element comes into contact with the second contact surface. The stator element preferably does not have a fixed connection or support to the rotor.

[0088] It can be proposed that the stator element and the locking element move relative to each other during the rotation of the rotor. In the release position of the blocking element, the locking element moves from the first position to the second position. In the blocking position of the blocking element, the stator element moves such that the locking element comes into contact with the second contact surface.

[0089] It can be proposed that the stator element can move between a first position and a second position. In the first position, the first contact surface is in contact with the locking element such that during the rotation of the rotor, the locking element moves from the first position to the second position. In the second position of the stator element, the locking element is in contact with the second contact surface such that the locking element remains in the first position. That is, during the above-mentioned rotation, the stator element must first move to the desired second position, whereby the second contact surface can come into play.

[0090] The first contact surface is closer to the locking element in the first position of the stator element than the second contact surface. In the second position of the stator element, the second contact surface extends more into the recess of the locking element than the first contact surface.

[0091] The movement of the stator element between the first and second positions preferably includes a vertical component for moving the locking element between the first and second positions. In particular, the movement of the stator element between the first and second positions is perpendicular to the movement of the locking element from the first position to the second position.

[0092] The stator can include at least one first spring that presses the stator element into the first position. Thereby, the reset of the stator element to the first position is automatically carried out, which enables simpler movement control. Preferably, the locking element is pre-tensioned to the first position by a second spring.

[0093] It is preferably provided that the force exerted on the locking element by the second spring is less than the force exerted on the stator element by the first spring. It is possible that the spring constant of the second spring is less than the spring constant of the first spring. Thereby, the first spring enables the stator element to remain in the first position when the locking element can be displaced into the second position.

[0094] Preferably, the locking element is arranged between at least one first stator element and at least one second stator element. Thus, when the rotor rotates in the clockwise direction and in the counterclockwise direction, the locking element moves into the second position through the first abutment surface as long as the blocking element permits the movement into the second position.

[0095] Preferably, the locking element is arranged between two second abutment surfaces. Thus, when the rotor rotates in the clockwise direction and in the counterclockwise direction, the locking element moves against the second abutment surface when the movement of the locking element into the second position is prevented, in particular by the blocking element.

[0096] Furthermore, it can be provided that the rotor comprises at least one first axial section, in particular a first rotor element, and a second axial section, in particular a second rotor element. The second section has a smaller diameter than the first section.

[0097] It can be proposed that the locking element is arranged in the second axial section. Thereby, there is sufficient structural space in the stator to arrange the first and second abutment surfaces. Preferably, there is sufficient structural space in the stator to accommodate one stator element or a plurality of stator elements.

[0098] In particular, the locking device can comprise a locking element for locking in at least one position of the rotor relative to the stator. The locking element holds the rotor in a position in which the locking element is not pushed by the first abutment surface against the blocking element. Thereby, the locking element is firmly held in said position and cannot leave said position undesirably.

[0099] Furthermore, a closing device is proposed according to the invention, wherein the closing device is configured to have a closing device housing and a locking device as shown above, wherein the locking device is received in the closing device housing. Description of the Drawings

[0100] The invention is explained in detail below on the basis of embodiments. Technical features having the same function are provided with the same reference signs in the drawings. The drawings show:

[0101] Figure 1 show a closing device and a key according to the invention,

[0102] Figure 2 show Figure 1The state in which parts of the closing device are disassembled from each other, showing a perspective view of the locking device according to the invention configured to mount the device,

[0103] Figure 3 showing Figure 2 the locking device according to the invention without a housing,

[0104] Figure 4 showing Figure 3 an exploded view of the locking device without a housing and a stator body, showing a spring element according to the invention,

[0105] Figure 5 showing selected elements of the locking device having a spring element according to the invention, Figure 4 in

[0106] Figure 6 showing Figure 4 a side view of selected elements of the locking device in

[0107] Figure 7 showing another view of a blocking element together with a spring element and an extension element arranged adjacent to the blocking element, the selected elements belonging to the locking device according to the invention of the previous figure,

[0108] Figure 8 showing an actuator assembly and Figure 7 a detailed view of the extension element in

[0109] Figure 9 showing Figures 1 to 8 selected elements of the locking device according to the invention of

[0110] Figure 10 wherein the position of the blocking element has been changed, and Detailed Description

[0111] Figure 1 and Figure 2 showing a closing device 100 in the form of a lock cylinder, as is known to be used in mortise locks to be able to unlock a building door as a locking element or to latch with a bolt. To this end, the closing device 100 has a housing 101, which has a recess in which a driving member 103 is rotatably arranged, and the driving member is configured as a locking projection. The driving member 103 is used to move the bolt in the latching or unlocking direction.

[0112] In the right half of the housing 101 here, a locking device 1 configured to mount a device according to an embodiment of the present invention is used. The mounting device 1 includes a stator 10 provided on the outer circumference, and a rotor 30 of the mounting device 1 is rotatably inserted into the stator about a rotor axis 35, which coincides with the rotation axis of the driving member 103 exemplarily. The rotor 30 includes a key channel 36 at its front side 37 facing away from the driving member 103 for pushing in the rod of the key 200.

[0113] The key 200 carries an electronic locking key in the form of electronic data. According to the locking key, it is possible to determine the authorization of the user to unlock the door. The key 200 is preferably configured without mechanical coding. Thus, it can be determined only based on the electronic locking key whether the user has authorization. Here, the key and the locking device can be mechanically identical in terms of their external shape. Additionally, it is feasible to configure the key channel 36 as short as possible to improve protection against tampering.

[0114] Furthermore, the key 200 includes a battery to supply electrical energy to the locking device 1.

[0115] Figure 2 A partially disassembled state of the closing device 100 is shown. The housing 101 has recesses 104 in the lower region, for example, in two halves of the recess for the driving member 103, where the right recess is provided with a reference numeral. The recess 104 shown here extends perpendicular to the rotation axis of the driving member 103. The driving member 103 exemplarily has an internal profile with a non-circular cross-section, for example, in the form of an internal toothing, and the insert 105 is preferably engaged with the internal profile in a form-fitting manner. For this purpose, the insert 105 has an external profile complementary to the internal profile of the driving member 103, which is in the form of an external toothing here, such that the two parts 103, 105 are torsionally resistant to each other.

[0116] The connecting section 38 of the mounting device 1 extends into the insert 105. In the connecting section 38, a coupling part 41 is movably arranged in a guide 42. The coupling part 41 is formed in multiple parts and can establish or release an effective connection between the rotor 30 and the driving member 103, especially via the insert 105, depending on the position of the coupling part 41. For this purpose, the coupling part 41 of the closing device 100 can be engaged with an internal profile (not shown) of the insert 105 in a form-fitting manner. The guide 42 preferably forms a linear guide for the coupling part 41 such that the coupling part 41 is arranged to be movable along the rotor axis 35 of the rotor 30.

[0117] The mounting device 1 has a housing 14 by means of which the mounting device 1 is pushed into the associated insertion opening 106 of the housing 101. A fixing element 102 in the form of a screw is screwed in from the underside of the housing 101 through the recess 104 on the right here into the opening 21 on the left of the housing 14 of the stator 10 and of the stator body 11 of the stator 10 to be described in more detail later. Thereby, the screw 102 fixes the stator 10 in the housing 101. In addition, a key channel 36 is shown here for introducing a key 200 which is formed in a first rotor element 32 of the rotor 30.

[0118] Figure 3 The mounting device 1 without the housing 14 is shown. The stator body 11 is also configured as a housing type and has functional structures on the inside. The stator body 11 has a recess 19 into which a stator insertion element 13 is inserted. A stator element 12 to be described in more detail later is arranged or provided on the side of the stator insertion element 13 facing the inside of the stator body 11. The stator element 12 is movably supported at the stator insertion element 13 and the stator body 11. The stator element 12 remains in the remaining stator 10 when the rotor 30 rotates.

[0119] The rotor 30 includes a first rotor element 32 and a second rotor element 33.

[0120] The rotor 30 is rotatably but position-fixed in the direction of its rotor axis 35 in the stator body 11 of the stator 10, the rotor axis extending parallel to the insertion direction of the key 200 into the key channel 36. A coupling part 41 is provided torsionally rigidly on the second rotor element 33 of the rotor 30 of the mounting device 1. The two rotor elements 32, 33 can be reversibly and releasably fixed to each other.

[0121] The second rotor element 33 has a guide part 42 into which the coupling part 41 engages so as to be provided torsionally rigidly with respect to the second rotor element 33. The second rotor element 33 is inserted into the stator body 11 starting from the base side 23 of the stator 10, more precisely preferably without the first rotor element 32 during installation.

[0122] Figure 4Shows a partially disassembled state of the installation device 1 without the housing 14, the stator body 11, and the coupling part 41. The extension element 40 is shown, which is configured to mechanically interact with the key 200. If the key 200 is pushed into the key channel 36, then upon contact, the key causes the extension element 40 to move axially or parallel to the rotor axis 35 in the direction towards the second rotor element 33. Here, the extension part 40 causes the coupling part 41 to move away from the rotor 30 in the direction towards the drive part 103, such that the coupling part 41 can be rotationally engaged with the drive part 103. The through-passage 39 is provided in the connecting section 38, by means of which the extension element 40 abuts against the coupling part 41. Here, the extension element 40 or the coupling part 41 can extend through the through-passage 39.

[0123] Here, the transmission element 44, which is in the form of a contact element for example, is elastically fixed to the housing 46 in order to establish a data and / or energy transmission connection with the key 200. Thereby, it is possible to read from or receive electronic data from the key 200, such as authentication information or an opening command. The electronic control device 53 is coupled to the transmission element 44 in order to read and, if necessary, evaluate the data. If the check by the control device 53 yields that the user of the key 200 is authorized to open the associated door, and / or the control device 53 issues an opening command, then the electromechanical actuator assembly 50 is activated.

[0124] Here, the actuator assembly 50 includes an electromechanical actuator 52, which is in the form of an electric motor here, and a blocking element 51 is torsionally fixed at its driven shaft.

[0125] The locking device 1 according to the invention includes a locking element 31, which is linearly movably supported in the rotor 30. The locking element 31 is preferably supported perpendicular to the rotor axis 35 so as to be movable towards and away from the blocking element 51. In the first position shown here, the locking element 31 is in the locking element recess 15, which is formed by the stator 10, in particular the stator insertion element 13 and the stator element 12. Thereby, rotation of the rotor 30 and thus the coupling part 41 is prevented. Rotation of the inserted key 200 in order to unlock the associated lock is thus prevented. In a second position (not shown) of the locking element 31, the locking element disengages from the locking element recess 15 of the stator 10. Thereby, it is possible for the rotor 30 to rotate in the stator 10 and thus for the drive part 103 to rotate in order to operate the closing device and cause the release of the closing.

[0126] The blocking element 51 includes a cutout 54. The blocking element 51 is rotatable between a release position (not shown) and a blocking position. In the release position, the cutout 54 faces the locking element 31 such that the locking element 31 can move into the cutout 54. In the blocking position, the cutout 54 does not face the locking element 31, preventing the locking element 31 from moving into the cutout 54.

[0127] The cutout 54 only occupies a small part of the circumferential surface of the blocking element 51, such that most of the positions that can be occupied by the blocking element 51 are the blocking positions. The blocking position in which the blocking element 51 is in the non-operated state of the locking device is referred to as the initial position.

[0128] The actuator assembly 50 having an electromechanical actuator 52 in the form of an electric motor and having the blocking element 51 at its driven shaft has a spring element 80 according to the invention. The spring element 80 acts together with the blocking element 51 such that when the blocking element 51 moves from the initial position to the release position, i.e., when the blocking element 51 rotates, the spring element 80 is at least temporarily tensioned, such that the spring element 80 presses the blocking element 51 back towards the initial position, i.e., back into a specific rotational position in this regard. Thereby, anti-tampering protection is achieved.

[0129] The blocking element 51 is movable from the initial position in a first direction, in particular a first rotational direction 81, and in a second direction, in particular a second rotational direction 82 (see Figure 5 ). Mechanical tampering can at least be envisaged in the second rotational direction 82. The spring element 80 and the blocking element 51 act together such that the spring element 80 is at least temporarily tensioned during movement in the first direction 81 and during movement in the second direction 82. Thus, during each attempt at mechanical tampering, the blocking element 51 is pressed back into the initial position.

[0130] The spring element 80 is configured as a torsion spring. Referring to Figure 5 , there is shown a spring element 80 according to the invention, which surrounds the blocking element 51 and the electromechanical actuator 52. The spring element 80 is rigidly tensioned at its rear side by means of its end sections there, and the spring element 80 has a torsion leg 80a, which transitions into a abutment leg 80b that is bent away from it by approximately 90°, and the abutment leg pre-tensions against a bolt 51b of the blocking element 51. The bolt 51b is circularly configured in this embodiment, but can be different therefrom.

[0131] The pre-tensioning of the abutment leg 80b against the bolt 51b is effected by twisting the twisting leg 80a such that the blocking element 51 is rotationally pre-tensioned into the initial position shown here, in which the blocking element 51 prevents movement of the locking element 31 and the rotor 30 cannot rotate in the stator 10. In this position, the cutout 54 is not oriented in alignment with the locking element 31. The rigid fixing of the twisting leg 80a takes place at the cover 52 of the actuator 52 (see Figure 7 ).

[0132] In the initial position, the spring element 80 is not tensioned. Rather, in the first rotational direction 81 and in the second rotational direction 82, the blocking element 51 must first be moved by means of the bolt 51b before the spring element 80 is tensioned.

[0133] In the first rotational direction 81, the blocking element must be rotated by more than 180° in order to reach the release position from the initial position, while in the second rotational direction 82, a rotation of less than 180° is sufficient to reach the release position from the initial position. However, a tampering rotation in the second rotational direction 82 is more difficult due to the sharp increase in spring tension than in the first rotational direction 81.

[0134] If the electromechanical actuator 52 is energized, the blocking element 51 rotates counterclockwise in the view shown here according to the arrow 81 such that, by means of this rotation, the pre-tensioning force in the twisting leg 80a of the spring element 80 is increased up to the stop point. In the stop point, the spring element 80 presses the bolt 51b in the direction of the driven shaft. After passing through the stop point, the spring tension of the spring element 80 decreases again. Thereby, from passing through the stop point, the blocking element 51 is pushed into the release position by the spring tension of the spring element 80. Thus, the spring element 80 can move or move together with the blocking element 51 into the release position. Figure 9 Shows the blocking position of the blocking element shortly after passing through the stop point and shortly before reaching the release position. Thereby, it is not necessary to precisely switch off the actuator 52 in order to reach the release position.

[0135] By rotating the blocking element 51 into the release position, the cutout 54 can be rotated into a position in which it engages with the locking element 31. In order to lock the position in which the cutout 54 engages with the locking element 31, i.e., lock it in the release position, a stop 83 is provided, which is described in detail and against which the retaining cam 51a of the blocking element 51 can abut. Figure 7 and the retaining cam 51a of the blocking element 51 can abut against said stop.

[0136] In the release position, the blocking element is pressed against the stop 83 by means of the retaining cam 51a by the spring element 80 such that the release position is precisely defined to a specific extent. In addition, a return impact of the retaining cam 51a against the stop 83 at the end of the rotation in the rotational direction 81 is reduced or prevented.

[0137] If the stop 83 moves out of the action area of the retaining cam 51a, as described in conjunction with Figure 7 and 8 then the blocking element 51 moves back into its initial position by the force of the spring element 80. Here, the direction of rotation 81 is maintained. Thereby, the blocking element 51 always moves in only one direction of rotation, in this example in the direction of rotation 81, during normal use.

[0138] When the key 200 is removed, the contact with the transmission element 44 is interrupted. Thereby, it is not possible to move the blocking element 51 from the release position back into its initial position by means of the electrical energy of the key 200 via the actuator 52. This is also not necessary in the locking device 1 according to the invention. Rather, the spring element 80 takes over guiding the blocking element 51 from the release position back into its initial position by the mechanical tension of the spring element 80.

[0139] The retaining cam 51a and / or the bolt 51b are formed rigidly, preferably in one piece, particularly preferably integrally, with the remaining blocking element 51.

[0140] Figure 5 and 6 show Figure 4 selected elements of the locking device 1 in. Here, Figure 5 shows the arrangement of the locking element 31 with respect to the blocking element 51 and the stator insertion element 13 together with the stator element 12. In Figure 4 and 5 the blocking position of the blocking element 51 is shown.

[0141] The locking element 31 is configured at its abutment section 63 facing the blocking element 51 such that it can be moved into the clearance 54 when the blocking element 51 is in the release position and the clearance 54 is opposite the abutment section 63 of the locking element 31, which in Figure 5 points upwards. Thereby, it is possible for the locking element 31 to reach the second position.

[0142] The first abutment surface 16 of the stator element 12 facing the locking element 31 is configured to squeeze the locking element 31 in the direction of the blocking element 51 when the rotor 30 continues to rotate, i.e., into the second position, in which the rotor 30 is freely rotatable relative to the stator 10. The first abutment surface 16 is configured as an inclined surface that squeezes the locking element 31 into the second position.

[0143] The stator element 12 is movably supported at the stator insertion element 13 between a first position and a second position. The stator element 12 is pressed into the first position by means of a first spring 18. The first spring 18 is supported in the stator 10. The movement of the stator element 12 from the first position to the second position is perpendicular to the movement direction 70 of the locking element 31 according to the movement direction 71.

[0144] During the unlocking of the rotor 30 relative to the stator 10, first the locking element 31 is in the locking element recess 15. Here, the locking element 31 is guided in the rotor 30. Additionally, the locking element 31 abuts at the first abutment surface 16 of the stator element 12. Thereby, the locking element 31 is centered. The said position of the locking element 31 is referred to as the rest position. In the rest position, the locking element 31 is preferably arranged spaced apart from the blocking element 51.

[0145] The user now wants to unlock the door and inserts the key 200 into the key channel 36. Thereby, the electronic communication between the key and the control device 53 is started, in which it is determined electronically whether the user is authorized.

[0146] If the user is authorized to unlock the door, then the control device 53 actuates the actuator 52. The actuator 52 designed as an electric motor rotates the blocking element 51 into the release position, in which the clearance 54 is opposite to the locking element 31. If now the rotor 30 is placed in a rotational movement by means of the key 200, then the locking element 31 slides along one of the first abutment surfaces 16 into the second position, in which the locking element 31 engages in the clearance 54, wherein the locking element 31 is pre-tensioned into the locking element recess 15 by means of a second spring (not shown). The locking element 31 then moves in the movement direction 70 by the rotation of the rotor 30.

[0147] The stator element 12 remains in the first position here. This can be achieved in that the first spring 18 exerts a higher force on the stator element 12 compared to a second spring (not shown) along which the locking element 31 slides and which presses the locking element 31 upwards into the locking element recess 15.

[0148] The rotor 30 can now rotate freely. The locking element 31 slides along the first abutment surface 16 into which the locking element 31 rotates. The locking element 31 is surrounded by the first abutment surface 16 in both rotational directions, such that the rotation in both directions can move the locking element 31 into the second position when abutting at one of the first abutment surfaces 16. In order to have the first abutment surface 16 in both rotational directions, the locking element recess 15 is surrounded by the stator element 12 on both sides.

[0149] The stator 10 as in Figure 6has a second abutment surface 17 as shown in FIG. , which holds the locking element 31 in the first position. The second abutment surface 17 comes into play when the user is not authorized to unlock the door. The second abutment surface is formed in or at the stator insertion element 13. If the locking element 31 is in the rest position, the second abutment surface 17 is spaced farther from the locking element 31 than the first abutment surface 16.

[0150] Preferably, the second abutment surface 17 is also inclined, however, opposite to the first abutment surface 16 with respect to the movement direction 70 of the locking element 31. The second abutment surface 17 thus forms an obtuse angle with the movement direction 70 of the locking element 31.

[0151] The locking element 31 has a cross-section at its end facing the stator insertion element 31, as viewed along the axis of rotation of the blocking element 51 and / or the rotor axis 35, which cross-section has a symmetric trapezoid that tapers in the direction towards the blocking element 51. The waist of the trapezoid forms the top surface 60 outwards with respect to the locking element 31. The top surface 60 and the mating abutment surface 17 are configured to be inclined with respect to the movement direction of the locking element 31.

[0152] If the user is not authorized to unlock the door, then the following process occurs. The locking element 31 is initially in the rest position. A key 200 without closing authorization is inserted into the key channel 36. The electronic data exchange shows that there is no authorization to unlock the door. Therefore, the actuator 52 is not actuated and the blocking element 51 remains in the blocking position, in which the clearance 54 is not opposite the locking element 31, as shown in FIG. and FIG. , especially in the initial position. Rather, the outer circumference of the blocking element 51 is opposite the locking element 31. Figure 4 and 5 If the rotor 30 rotates, the locking element 31 attempts to slide along the first abutment surface 16. This, however, is not successful because the locking element 31 stands on the outer circumference of the blocking element 31. Therefore, the locking element 31 cannot be pushed into the second position against the force of a second spring (not shown).

[0153] Instead, the stator element 12 in the rotation direction of the locking element 31 is pushed back by the locking element 31 against the force of the first spring 18 until the locking element 31 abuts against the second abutment surface 17. The stator element 12 is now in the second position. Here, the top surface 60 of the locking element 31 abuts against the mating second abutment surface 17 opposite the waist of the trapezoid. If an attempt is made to force the rotor 30 to rotate via the key 200, the shown arrangement does not generate a higher force from the locking element 31 to the blocking element 51.

[0154]

[0155] ​The abutment surface 17 is configured such that the abutment surface 17 of the locking element 31 is held in the first position. Accordingly, the rotor 30 is blocked by the locking element 31, such that unlocking of the stop door is prevented.

[0156] Each abutment surface 17 cooperates with a respective side of the facing top surface 60 of the locking element 31. The surface 60 and the respectively cooperating abutment surface 17 are configured such that when the locking element 31 abuts at the abutment surface 17, there is an abutment surface 17 between the surface 60 and the blocking element 51.

[0157] If an attempt is made to continue rotating the rotor 30, the locking element 31 slides away from the blocking element 51 contrary to the direction of movement 70. This is achieved by the inclined surface of the second abutment surface 17. The locking element 31 slides along the second abutment surface 17 by means of the top surface 60. Accordingly, the locking element 31 and the blocking element 51 can be spaced apart from each other when abutting at the second abutment surface 17. Additionally or alternatively, the force acting on the locking element 31 when the rotor 30 continues to be rotated is directed into the second abutment surface 17. Contributing thereto is that the top surface 60 cooperates with the second abutment surface such that the locking element 31 abuts flatly at the second abutment surface.

[0158] Thereby, damage to the blocking element 51 is avoided, and the blocking element does not absorb the force generated when attempting to rotate the rotor 30 in the stator 10 by force. In particular, this makes it possible for the blocking element 51 to be configured finely and, for example, to be supported only on one side or to be received on a thin shaft of the electromechanical actuator 52 configured as a motor.

[0159] The locking element cutout is provided with the reference numeral 15. Figure 6 Shown is the arrangement as viewed from the end side of the locking element 31 Figure 5 only without the blocking element 51. Here, the stator element 12 is in the second position. By Figure 5 description, Figure 6 the same reference numerals in Figure 6 are considered described herein.

[0160] In Figure 7 and Figure 8 selected components are shown, such as the extension element 40, the electromagnetic actuator assembly 50 having the electromagnetic actuator 52 and the rotatable blocking element 51 by means of the electromagnetic actuator.

[0161] The extension element 40 can be linearly parallel to the rotor axis 35, i.e., along and against the arrow direction 79 (see Figure 10)Upon movement, the extension element 40 occupies the pushed-in position when the key 200 is inserted, and the extension element occupies the pulled-out position when the key 200 is removed. The extension element 40 is urged into the pulled-out position of the key 200 by means of a spring 49. The extension element 40 is guided in the guide portion 65 of the rotor 30 (see Figure 4 ).

[0162] The extension element 40 can be used to bridge the spacing between the key 200 and the coupling part 41.

[0163] In Figure 7 the locking element 31 is shown laterally on the extension element 40. On the rear side, the extension element 40 has a section 86 for pushing the coupling part 41, and a stop 83 is arranged on the lower side at the coupling part.

[0164] The extension element 40 is configured bent in the illustrated example. Here, a first part of the extension element 40 that interacts with the key 200 extends radially further out than a second section 86 of the extension element 40 that is intended to interact with the coupling part 41. Thereby, the section 86 can be arranged more centrally in order to be able to better push the coupling part 41.

[0165] The extension element 40 is configured to push the coupling part 41, but does not engage form-fittingly with the coupling part 41. This enables the extension element to be configured finely.

[0166] If the extension element 40 is placed in the pulled-out position, then due to the lack of form-fitting, the coupling part 41 is connected to the drive member 103. However, in the pulled-out position, the extension element 40 allows: the coupling part 41 to move away from the effective connection with the drive member 103, for example by the coupling part 41 moving from the other side of the door. Conversely, in the pushed-in position, the extension element 40 blocks the coupling part 41 from moving away from the effective connection with the drive member 103.

[0167] The extension element 40 is used to mechanically hold the blocking element 51 in the released position. If the extension element 40 is in the pushed-in position, then the stop 83 of the extension element 40 is in the rotation path of the holding cam 51a. Thus, the blocking element 51 abuts against the stop 83 of the extension element 40 in the released position by means of the holding cam 51a.

[0168] Here, the holding cam 51a presses perpendicular to the movement direction of the extension element 40. Thereby and by the axial spatial expansion of the stop 83 and the holding cam 51a, there can be a certain tolerance for the orientation of the pushed-in position of the extension element.

[0169] The extension element 40 serves to mechanically return the blocking element 51 from the release position back to the initial position. Here, the extension element 40 moves back to the unplugged position when the key is unplugged. In the case where the extension element moves to the unplugged position, the movement of the blocking element 51 to the blocking position can be caused or permitted. This can be achieved in such a way that the stop 83 of the extension element 40 is outside the rotational path of the retaining cam 51a in the unplugged position. Thus, the stop 83 can no longer prevent the blocking element 51 from moving to the initial position by the pre-tensioned spring element 80. More precisely, the stop 83 is more forward with respect to the axis of rotation 35. In other words, in the unplugged position of the extension element 40, the retaining cam 51a is axially between the stop 83 and the connecting section 38. In the unplugged position of the extension element 40, the stop 83 is axially between the end side 37 and the retaining cam 51a. Figure 7 and 8 shows the unplugged position.

[0170] In the pushed-in position of the extension element 80, when observed axially, the stop 83 and the retaining cam 51a are equally far from the connecting section 38 and / or the end side 37.

[0171] In the pushed-in position, the extension element 40, in particular the stop 83, prevents the blocking element 51 from reaching the release position in the second rotational direction. More precisely, here, before reaching the release position, the retaining cam 51a collides with the (lower middle) region 83a of the stop 83. The first rotational direction is particularly resistant to tampering by a longer angular range of reaching the release position. In the unplugged position, the coupling part 41 is not coupled or moves out of effective connection with the driving part 103 again when the rotor 30 rotates. Figure 8 In the unplugged position, the coupling part 41 is not coupled or moves out of effective connection with the driving part 103 again when the rotor 30 rotates.

[0172] The extension element 40 holds the blocking element 51 in the release position when the key is inserted, and allows the blocking element 51 to move back to the initial position when the extension element 40 moves in the direction of the front side 37 when the key 200 is unplugged.

[0173] When the electromechanical actuator 52 is activated, the blocking element 51 rotates counterclockwise in the view shown here, so that through this rotation, under the pre-tension of the spring element 80, the retaining cam 51a moves to abut against the stop 83 of the extension element 40. By rotating the blocking element 51, the clearance 54 can be rotated into a position that mates with the locking element 41.

[0174] If the key 200 is unplugged again, then the stop 83 moves out of the movement area of the retaining cam 51a, and the blocking element 51 is rotated back to the initial position by the spring element 80. In the initial position, the locking element is pressed back into the locking element recess 15 by the second spring and the locking device 1 is locked again.

[0175] If the key 200 is inserted again and the extension element 40 is again pressed into the pushed-in position, then the stop 83 again moves back into the movement area of the holding cam 51a, and when the electromechanical actuator 52 is additionally activated, the holding cam 51a again abuts against the stop 83. The blocking element 51 can hereby be rotated by the electromechanical actuator 52 always in the same rotational direction and always over the same range of rotational angles until the spring element 80 rotates the blocking element 51 through the last angular section into the release position. If the key 200 is removed, the electromechanical actuator 52 does not have to be reactivated because the spring element 80 causes the blocking element 51 to rotate back into the initial position.

[0176] The engaging element 74 of the extension element 40 serves to engage into the key 200. Thereby it is ensured that the key 200 pulls the extension element 40 along when the key is removed.

[0177] The annular projection 22 is shown by two especially half-shell-shaped parts, whose mutually facing inner faces 26 cooperate with the key 200 in the type of snap fastener. These parts are inserted into the circumferentially formed groove 45 of the first rotor element 32, see Figure 4 . The outwardly projecting projections 25 of the annular projection 22 fix these parts of the projection 22 in the stator body 11 in their relative position to one another and to the stator body 11. The annular projection 22 preferably cooperates with the inserted key 200 in a snap-fastening manner as a key removal lock. The projection 22 prevents that when the key 200 is inserted, the key 200 is pressed by the spring 49 of the locking device 1 such that the extension element 40 already reaches the removal position early on and the blocking element 51 reaches the blocking position or at least presses the locking element 31 out of the second position.

[0178] There is a locking element 61 which holds the rotor 30 in position relative to the stator 10 by abutting in the groove 69 (see Figure 4 ). Hereby, the rotation of the rotor 30 is inhibited in the stator by the locking element 61 such that the locking element 31 can assume the rest position.

[0179] As shown in Figure 10 , the key channel 36 ends with a wall portion 36a. As in Figure 10As shown, only the part of the extension element 40 configured to interact with the key 200 extends into the key channel 36. The wall portion 36a is substantially closed except for the section necessary for the extension element 40 to extend into the key channel. Since at least the part of the extension element 40 extending into the key channel 36 is finely configured, the wall portion 36a can close the key channel 36 and protect the components located behind it, namely the locking element 31, the blocking element 51, the spring element 80, the actuator 52, and the control device 53. The key channel 36 can be configured to be correspondingly short.

[0180] The contact element 44 is elastically fixed to the housing 46.

[0181] The housing 46 is simultaneously used to axially fix the rotor elements 32, 33 to each other. For this purpose, the housing 46 includes a first locking element 47 that locks into the first rotor element 32. For this purpose, the first rotor element 32 includes an edge 78. The housing 46 includes a second locking element 48 that locks into the second rotor element 33. For this purpose, the second rotor element 33 includes a groove (not shown).

[0182] The housing 46 provides the wall portion 36a.

[0183] The mounting device 1 can also be used in other closing devices, such as in half-cylinders, ball handle cylinders, furniture cylinders, or padlocks.

[0184] It is conceivable that the coupling part 41 is missing. More precisely, a closing device according to the invention can be provided in which the actuating part 103 is rigidly fixed to the rotor 30. In addition, the actuating part 103 can itself be used as a bolt, for example in a furniture lock. When the coupling part 41 is missing, the extension element 40 is furthermore used to hold the blocking element 51 against the spring force of the spring element 80 in the released position.

[0185] The actuating part 103 and the insert part 105 can be integrally formed with each other.

[0186] The stator insertion element 13 and the stator body 11 can be integrally formed. It is also conceivable that the housing 14 is missing and the stator body is directly fixed in the closing device housing 101.

[0187] In another alternative of the present invention, the locking device 1 is not configured as the mounting device 1. More precisely, the stator 10 is configured as the closing device housing 101. Thus, the rotor 30 can be configured to be directly pushed into the lock cylinder housing 101. The closing device housing 101 then assumes the function of the stator 10.

[0188] The locking element 31 and / or the actuator assembly can also be supported in the stator 10 such that the locking element 31 presses against the rotor 30.

[0189] The transmission device 44 can for example be configured as a contactless coil.

[0190] The rotor 30 does not have to have a plurality of rotor elements 32, 33. Nevertheless, the rotor 30 can have sections with different diameters.

[0191] The invention in its embodiments is not limited to the preferred embodiments given above. Rather, a plurality of variants can be envisaged, which are also used by the solutions shown in embodiments of different types in principle. All features and / or advantages resulting from the claims, the description or the drawings, including construction details or spatial arrangements, can be important for the invention not only by themselves but also in completely different combinations.

Claims

1. An electromechanical locking device (1) for a latching element or for a switching element, having a stator (10), having a rotor (30), having a locking element (31) and a blocking element (51), wherein the rotor (30) is supported in the stator (10), wherein the locking element (31) is movable between a first position and a second position, wherein the blocking element (51) can assume an initial position and a release position, wherein in the initial position, the blocking element (51) prevents the locking element (31) from moving into the second position, and in the release position, the blocking element (51) allows the locking element (31) to move into the second position, characterized in that the locking device (1) comprises a spring element (80), wherein the spring element (80) cooperates with the blocking element (51) such that when the blocking element (51) moves from the initial position to the release position, the spring element (80) is at least temporarily tensioned such that the spring element (80) presses the blocking element (51) back towards the initial position.

2. The locking device (1) according to claim 1, wherein the blocking element (51) is movable from the initial position in a first direction and in a second direction, wherein the spring element (80) and the blocking element (51) cooperate such that the spring element (80) is at least temporarily tensioned not only during movement in the first direction but also during movement in the second direction.

3. The locking device (1) according to claim 1 or 2, wherein the spring element (80) is configured as a torsion spring, wherein the spring element (80) has a torsion leg (80a) and a abutment leg (80b) bent away from the torsion leg, wherein the abutment leg (80b) is pre-tensioned against a bolt (51b) of the blocking element (51).

4. The locking device (1) according to claim 1 or 2, wherein the locking device (1) comprises an electromechanical actuator (52), wherein the actuator (52) is configured to move the blocking element (51) in the direction towards the release position against the force of the spring element (80).

5. The locking device (1) according to claim 4, wherein the actuator (52) rotates the blocking element (51) from the initial position in the direction towards the release position under the condition that the tension of the spring element (80) increases until it exceeds a dead center, wherein after exceeding the dead center, the spring element (80) moves or moves the blocking element (51) together into the release position.

6. The locking device (1) according to claim 1 or 2, wherein the blocking element (51) abuts against a stop (83) of the locking device (1) in the release position, and wherein the spring element (80) presses the blocking element (51) against the stop (83) and / or prevents or reduces a rebounding of the blocking element (51) from the stop (83) during movement into the release position.

7. The locking device (1) according to claim 1 or 2, wherein the locking device (1) comprises an extension element (40), wherein the extension element (40) is movable between a pushed-in position and a pulled-out position, and wherein the extension element (40) and the blocking element (51) are configured such that the extension element (40) prevents the blocking element (51) from moving from the release position to the blocking position in the pushed-in position.

8. The locking device (1) according to claim 1 or 2, wherein the locking device (1) comprises an extension element (40), wherein the extension element (40) is movable between a pushed-in position and a pulled-out position, and wherein the extension element (40) and the blocking element (51) are configured such that the extension element (40) releases the blocking element (51) to move from the release position to the blocking position in the pulled-out position, and wherein the extension element (40) is not effectively connected to the blocking element (51) in the pulled-out position such that the blocking element (51) moves from the release position to the blocking position by the force of the spring element (80).

9. The locking device (1) according to claim 1 or 2, wherein the movement from the initial position to the release position and from the release position to the initial position takes place in the same rotational direction.

10. The locking device (1) according to claim 7, wherein the extension element (40) is for moving a coupling part (41) into effective connection with a driving part (103).

11. The locking device (1) according to claim 7, wherein the extension element (40) is configured to move axially between the pulled-out position and the pushed-in position, and wherein the blocking element (51) is pressed against the extension element (40) by the spring element (80) with at least a force component perpendicular to the axial direction, and the extension element (40) prevents the blocking element (51) from moving from the release position to the blocking position.

12. The locking device (1) according to claim 7, wherein the extension element (40) prevents the blocking element (51) from moving from the initial position to the release position in one rotational direction in the pushed-in position.

13. The locking device (1) according to claim 10, wherein the extension element (40) prevents the coupling part (41) from moving away from the effective connection with the driving part (103) in the pushed-in position and / or the extension element (40) allows the removal of the effective connection between the coupling part (41) and the driving part (103) in the pulled-out position.

14. The locking device (1) according to claim 7, wherein the locking device (1) comprises a transmission device (44) for transmitting data and / or electrical energy from the key (200) to the locking device (1), wherein when the key (200) is removed, the transmission of data and / or electrical energy is interrupted and / or the extension element (40) engages form - fit into the key such that the movement of the extension element (40) from the inserted position to the removed position always takes place when the key is removed.

15. The locking device (1) according to claim 2, wherein the blocking element (51) is movable from the initial position in a first rotational direction (81) and in a second rotational direction (82).

16. The locking device (1) according to claim 4, wherein the actuator (52) is configured to rotate the blocking element (51) in the direction towards the release position against the force of the spring element (80).

17. The locking device (1) according to claim 4, wherein the spring element (80) is tensioned such that the spring element (80) can rotate the blocking element (51) back into the initial position.

18. The locking device (1) according to claim 7, wherein the extension element (40) and the blocking element (51) are configured such that the extension element (40) in the inserted position prevents the movement of the blocking element (51) from the release position to the initial position.

19. The locking device (1) according to claim 7, wherein the extension element (40) prevents the blocking element (51) from moving from the release position to the blocking position by the force of the spring element (80).

20. The locking device (1) according to claim 8, wherein the extension element (40) and the blocking element (51) are configured such that the extension element (40) in the removed position releases the movement of the blocking element (51) from the release position to the initial position.

21. The locking device (1) according to claim 9, wherein the movement from the initial position to the release position and from the release position to the initial position takes place in a first rotational direction (81).

22. The locking device (1) according to claim 10, wherein the coupling part (41) remains in effective connection with the driving part (103) when the extension element (40) moves from the inserted position to the removed position.

23. The locking device (1) according to claim 11, wherein the extension element (40) is configured to be pushed axially between the removed position and the inserted position.

24. The locking device (1) according to claim 12, wherein the extension element (40) in the inserted position prevents the movement of the blocking element (51) from the initial position to the release position in the second rotational direction (82).

25. A closing device (100) having a closing device housing (101) and a locking device (1) according to any one of the preceding claims, wherein the locking device (1) is received in the closing device housing (101).

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