ELECTROMECHANICAL LOCKING DEVICE

Abstract

An electromechanical locking device for a closure element includes a stator, with a rotor, a locking element and a blocking element, wherein the rotor is mounted in the stator, wherein the locking element is movable between two positions, wherein a starting position and a release position can be assumed by the blocking element. In the starting position, the blocking element prevents a movement of the locking element into the second position and in the release position the blocking element enables a movement of the locking element into the second position. The locking device includes a spring element, wherein the spring element interacts with the blocking element such that when the blocking element moves from the starting position into the release position, the spring element is at least temporarily tensioned in such a way that the spring element pushes the blocking element back in the direction of the starting position.

Claims

1. An electromechanical locking device for a closure element or for a switching element comprising: a stator, a rotor, a locking element and with a blocking element, wherein the rotor is mounted in the stator, wherein the locking element is movable between a first position and a second position, wherein a starting position and a release position is assumed by the blocking element, wherein in the starting position the blocking element prevents a movement of the locking element into the second position and in the release position the blocking element enables a movement of the locking element into the second position, wherein the locking device comprises a spring element, wherein the spring element interacts with the blocking element in such a way that when the blocking element moves from the starting position into the release position, the spring element is at least temporarily tensioned in such a way that the spring element pushes the blocking element back in the direction of the starting position.

2. The locking device according to claim 1, wherein the blocking element is movable from the starting position in a first direction of rotation, and in a second direction of rotation, wherein the spring element and the blocking element interact such that the spring element is at least temporarily tensioned both during a movement in the first direction and during a movement in the second direction.

3. The locking device according to claim 1, wherein the spring element is designed as a torsion spring, wherein the spring element has a torsion leg and a contact leg angled therefrom, wherein the contact leg is pretensioned against a pin of the blocking element.

4. The locking device according to claim 1, wherein the locking device comprises an electro-mechanical actuator, wherein the actuator is designed to move, the blocking element in the direction of the release position against the force of the spring element, wherein the spring element is tensioned such that the spring element can-rotates the blocking element back into the starting position.

5. The locking device according to claim 1, wherein the actuator rotates the blocking element starting from the starting position under increasing tension of the spring element in the direction of the release position until over a dead centre, wherein after exceeding a dead centre the spring element moves or contributes to moving the blocking element into the release position.

6. The locking device according to claim 1, wherein the blocking element rests against a stop of the locking device in the release position, wherein the spring element presses the blocking element against the stop and/or prevents or reduces a rebound of the blocking element from the stop during the movement into the release position.

7. The locking device according to claim 1, wherein the locking device comprises an extension element, wherein the extension element is movable between an insertion position and a withdrawal position, wherein the extension element and the blocking element are designed such that the extension element in the insertion position prevents movement of the blocking element from the release position into a blocking position, into the starting position, wherein the extension element blocks the blocking element from being moved from the release position into a blocking position by the force of the spring element.

8. The locking device according to claim 1, wherein the locking device comprises an extension element, wherein the extension element is movable between an insertion position and a withdrawal position, wherein the extension element and the blocking element are designed such that the extension element in the withdrawal position releases a movement of the blocking element from the release position into a blocking position, into the starting position, wherein the extension element is in the withdrawal position out of operative connection with the blocking element, such that a movement of the blocking element from the release position into a blocking position takes place by the force of the spring element.

9. The locking device according to claim 1, wherein the movement from the starting position into the release position and from the release position into the starting position takes place in the same direction of rotation, in the first direction of rotation.

10. The locking device according to claim 1, wherein the extension element serves to move a coupling part into an operative connection with a driver, wherein the coupling part remains in the operative connection with the driver during a movement of the extension element from the insertion position into the withdrawal position.

11. The locking device according to claim 1, wherein the extension element is designed to be moved, in the axial direction between the withdrawal position and the insertion position, wherein the blocking element is pressed against the extension element by the spring element with at least a force component perpendicular to the axial direction, while the extension element blocks a movement of the blocking element from the release position to a blocking position.

12. The locking device according to claim 1, wherein the extension element in the insertion position blocks a movement of the blocking element from the starting position into the release position in one direction of rotation, the second direction of rotation.

13. The locking device according to claim 1, wherein the extension element in the insertion position prevents a movement of a coupling part out of the operative connection with the driver and/or the extension element in the extended position allows a release of the operative connection of a coupling part to the driver.

14. The locking device according to claim 1, wherein the locking device comprises a transmission device for transmitting data and/or electrical energy from a key to the locking device, wherein when the key is withdrawn, the transmission of data and/or electrical energy is interrupted and/or the extension element engages in the key in a form-fitting manner, such that when the key is withdrawn, the extension element always moves from the insertion position to the withdrawn position.

15. A closing device with a closing device housing and a locking device according to claim 1, wherein the locking device is accommodated in the closing device housing.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0101] In the following, the disclosure will be explained further on the basis of an exemplary embodiment. Technical features with identical functions are provided here with identical reference numerals in the figures. In the figures:

[0102] FIG. 1 shows a closing device according to the disclosure and a key,

[0103] FIG. 2 shows the closing device from FIG. 1 in a partially disassembled state, with a perspective view of a locking device according to the disclosure, which is designed as an installation device,

[0104] FIG. 3 shows the locking device according to the disclosure from FIG. 2 without a casing,

[0105] FIG. 4 shows the locking device from FIG. 3 without a casing or stator body in an exploded view showing the spring element according to the disclosure,

[0106] FIG. 5 shows selected elements of the locking device from FIG. 4 with the spring element according to the disclosure,

[0107] FIG. 6 shows selected elements of the locking device from FIG. 4 in a side view,

[0108] FIG. 7 shows a further illustration with the blocking element in connection with the spring element and with the extension element in an adjacent arrangement to the blocking element; the selected elements belong to the locking device according to the disclosure of the preceding figures,

[0109] FIG. 8 shows a detailed view of the actuator assembly and the extension element from FIG. 7,

[0110] FIG. 9 shows selected elements of the locking device according to the disclosure of FIGS. 1 to 8, wherein the position of the blocking element has been changed and

[0111] FIG. 10 shows a sectional view through the locking device showing the extension element according to the disclosure.

DETAILED DESCRIPTION OF THE DRAWINGS

[0112] FIG. 1 and FIG. 2 show a closing device 100 in the form of a closing cylinder, as is known to be used in mortise locks in order to unlock a building door as a closure element or to be able to lock it by means of a bolt. For this purpose, the closing device 100 has a housing 101 with a recess in which a driver 103, which is designed as a locking lug, is rotatably arranged. The driver 103 serves to move a bolt in the locking or unlocking direction.

[0113] In the right half of the housing 101, a locking device 1 designed as an installation device according to an embodiment of the disclosure is inserted. The installation device 1 comprises a stator 10 arranged on the outer circumference, in which a rotor 30 of the installation device 1 is inserted so as to be rotatable about a rotor axis 35, which, for example, corresponds to the axis of rotation of the driver 103. The rotor 30 comprises, on its front side 37 facing away from the driver 103, a keyway 36 for inserting a shaft of a key 200.

[0114] The key 200 carries an electronic locking secret in the form of electronic data. The locking secret can be used to determine a user's authorisation to unlock the door. The key 200 is preferably designed without mechanical coding. Therefore, only the electronic locking secret can be used to determine whether the user has authorisation or not. The keys and the locking devices can be identical in terms of their external shape and thus also mechanically. In addition, it is possible to make a keyway 36 as short as possible and thus increase the protection against manipulation.

[0115] The key 200 also comprises a battery to supply the locking device 1 with electrical energy.

[0116] FIG. 2 shows the closing device 100 in a partially disassembled state. The housing 101 has, for example in both halves of the recess for the driver 103 in the lower area, recesses 104, of which the right-hand recess is provided with a reference number. The recesses 104 shown here extend perpendicular to the axis of rotation of the driver 103. The driver 103 has, for example, an inner contour that is not circular in cross-section, for example in the form of an internal toothing, into which an insert 105 preferably engages in a form-fitting manner. For this purpose, the insert 105 has an outer contour that is complementary to the inner contour of the driver 103, here in the form of an external toothing, so that both parts 103, 105 are arranged in a rotationally fixed manner with respect to one another.

[0117] A connecting portion 38 of the installation device 1 projects into the insert 105. In the connecting portion 38, a coupling part 41 is slidably arranged in a guide 42. The coupling part 41 is designed in several parts and, depending on the position of the coupling part 41, can establish or release an operative connection between the rotor 30 and the driver 103, in particular via the insert 105. For this purpose, the coupling part 41 of the closing device 100 can engage in a form-fitting manner in an inner contour (not shown) of the insert 105. The guide 42 preferably forms a linear guide for the coupling part 41, so that the coupling part 41 is arranged to be guided and movable along the rotor axis 35 of the rotor 30.

[0118] The installation device 1 has a casing 14 with which the installation device 1 is inserted into an associated insertion opening 106 of the housing 101. A fastening element 102 in the form of a screw is screwed through the recess 104 on the right here from the underside of the housing 101 and into an opening 21 on the left here of the casing 14 of the stator 10 and of a stator body 11 of the stator 10, which will be explained in more detail later. The screw 102 thus fixes the stator 10 in the housing 101. Furthermore, the keyway 36 for inserting the key 200 is designated here, which is formed in a first rotor element 32 of the rotor 30.

[0119] FIG. 3 shows the installation device 1 without the casing 14. The stator body 11 is also designed as a type of sleeve and has functional structures on the inside. The stator body 11 has a cavity 19 into which a stator insert element 13 is inserted. Stator elements 12, which will be explained in more detail later, are attached or arranged on a side of the stator insert element 13 facing the interior of the stator body 11. The stator elements 12 are movably mounted on the stator insert element 13 and the stator body 11. The stator elements 12 remain in the rest of the stator 10 when the rotor 30 rotates.

[0120] The rotor 30 comprises the first rotor element 32 and a second rotor element 33.

[0121] The rotor 30 is rotatable in the stator body 11 of the stator 10, but is fixed in the direction of its rotor axis 35, which runs parallel to the insertion direction of the key 200 into the keyway 36. The coupling part 41 is arranged in a rotationally fixed manner on the second rotor element 33 of the rotor 30 of the installation device 1. Both rotor elements 32, 33 are reversibly detachably attached to each other.

[0122] The second rotor element 33 has the guide 42 into which the coupling part 41 engages and is thus arranged in a rotationally fixed manner to the second rotor element 33. The second rotor element 33 is inserted into the stator body 11 from a base side 23 of the stator 10, preferably without the first rotor element 32 during assembly.

[0123] FIG. 4 shows the installation device 1 without the casing 14, stator body 11 or coupling part 41 in a partially disassembled state. An extension element 40 designed to interact mechanically with the key 200 is shown. If the key 200 is inserted into the keyway 36, it moves the extension element 40 axially or parallel to the rotor axis 35 in the direction of the second rotor element 33 upon contact. The extension part 40 moves the coupling part 41 away from the rotor 30 in the direction of the driver 103 so that the coupling part 41 can come into rotational engagement with the driver 103. A passage 39 is provided in the connecting portion 38 so that the extension element 40 comes to rest on the coupling part 41. Either the extension element 40 or the coupling part 41 can protrude through the passage 39.

[0124] A transmission element 44, here for example in the form of contact elements, is spring-mounted on a housing 46 in order to establish a data and/or energy transmission connection with the key 200. This makes it possible to read electronic data, for example authentication information or an opening command, from the key 200 or to receive it from the key 200. An electronic control device 53 is coupled to the transmission element 44 in order to read out the data and, if necessary, evaluate it. If the check of the control device 53 shows that the user of the key 200 is authorised to open the associated door and/or if the control device 53 has an opening command, an electromechanical actuator assembly 50 is activated.

[0125] The actuator assembly 50 comprises an electromechanical actuator 52, here in the form of an electric motor, on the output shaft of which a blocking element 51 is arranged in a rotationally fixed manner.

[0126] The locking device 1 according to the disclosure comprises a locking element 31, which is mounted in the rotor 30 so as to be linearly movable. The locking element 31 is preferably mounted so as to be movable perpendicular to the rotor axis 35 towards and away from the blocking element 51. In the first position shown here, the locking element 31 is located in a locking element recess 15 which is formed by the stator 10, in particular by the stator insert element 13 and the stator elements 12. This prevents the rotor 30 and thus the coupling part 41 from rotating. Turning the inserted key 200 to unlock the corresponding lock is thus prevented. In a second position of the locking element 31 (not shown), it comes out of engagement with the locking element recess 15 of the stator 10. This makes it possible to rotate the rotor 30 in the stator 10 and thus the driver 103 in order to actuate the closing device and to release the closing mechanism.

[0127] The blocking element 51 comprises a cavity 54. The blocking element 51 is rotatable between a release position (not shown) in which the cavity 54 is opposite the locking element 31 such that the locking element 31 can move into the cavity 54 and a blocking position in which the cavity 54 is not opposite the locking element 31 such that the locking element 31 is prevented from moving into the cavity 54.

[0128] The cavity 54 takes up only a small part of the peripheral surface of the blocking element 51, such that a predominant part of the positions that can be assumed by the blocking element 51 are blocking positions. The blocking position in which the blocking element 51 is located in the unactuated state of the locking device is referred to as the starting position.

[0129] The actuator assembly 50 with the electromechanical actuator 52 in the form of the electric motor and with the blocking element 51 on its output shaft has a spring element 80 according to the disclosure. The spring element 80 interacts with the blocking element 51 in such a way that when the blocking element 51 moves from the starting position into the release position, i.e. when the blocking element 51 is rotated, the spring element 80 is at least temporarily tensioned in such a way that the spring element 80 pushes the blocking element 51 back in the direction of the starting position, i.e. rotates it back into a certain rotational position. This provides protection against manipulation.

[0130] Starting from the starting position, the blocking element 51 can be movable in a first direction, in particular a first direction of rotation 81, and in a second direction, in particular in a second direction of rotation 82 (see FIG. 5). At least the second direction of rotation 82 is conceivable by mechanical manipulation. The spring element 80 and the blocking element 51 interact in such a way that the spring element 80 is at least temporarily tensioned both during a movement in the first direction 81 and during a movement in the second direction 82. Thus, with every mechanical manipulation attempt, the blocking element 51 is pushed back to its starting position.

[0131] The spring element 80 is designed as a torsion spring. With reference to FIG. 5, the spring element 80 according to the disclosure is shown, which encompasses the blocking element 51 and the electromechanical actuator 52. The spring element 80 is rigidly clamped on the rear side with its end portion there, and the spring element 80 has a torsion leg 80a that merges into a contact leg 80b angled approximately 90 therefrom and is pretensioned against a pin 51b of the blocking element 51. In this embodiment, the pin 51b is round, but deviations from this are possible.

[0132] The pretensioning of the contact leg 80b against the pin 51b is effected via the torsion of the torsion leg 80a such that the blocking element 51 is rotationally pretensioned into the starting position shown here, in which the blocking element 51 prevents movement of the locking element 31 and the rotor 30 is not rotatable in the stator 10. In this position, the cavity 54 is not aligned with the locking element 31. The torsion leg 80a is rigidly attached to a cover 52a of the actuator 52 (see FIG. 7).

[0133] In the starting position, the spring element 80 is not tensioned. Rather, in the first direction of rotation 81, as well as in the second direction of rotation 82, the blocking element 51 with the pin 51b must first be moved before the spring element 80 is tensioned. In the first direction of rotation 81, the blocking element must rotate by more than 180 to reach the release position from the starting position, while in the second direction of rotation 82, a rotation of less than 180 is sufficient to get from the starting position into the release position. However, a manipulative rotation in the second direction of rotation 82 is made more difficult by a steeper increase in the spring tension than in the first direction of rotation 81.

[0134] If the electromechanical actuator 52 is energised, the blocking element 51 is rotated anti-clockwise according to the arrow 81 in the view shown here, such that this rotation increases the pretension in the torsion leg 80a of the spring element 80 up to a dead centre. At the dead centre, the spring element 80 presses the pin 51b in the direction of the output shaft. After passing through the dead centre, the spring tension of the spring element 80 is reduced again. As a result, once the dead centre has been passed, 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 contribute to moving the blocking element 51 into the release position. FIG. 9 shows a blocking position of the blocking element shortly after passing the dead centre and shortly before reaching the release position. As a result, it is not necessary to switch off the actuator 52 precisely in order to reach the release position.

[0135] By rotating the blocking element 51 into the release position, the cavity 54 can be rotated into the corresponding position with the locking element 31. In order to lock the position of the cavity 54 corresponding to the locking element 31, i.e. in the release position, a stop 83 is provided, which is explained in more detail in connection with FIG. 7 and against which a retaining cam 51a of the blocking element 51 can come to rest.

[0136] In the release position, the blocking element with the retaining cam 51a is pressed against the stop 83 by the spring element 80, so that the release position is precisely defined to a particular extent. In addition, a rebound of the retaining cam 51a from the stop 83 towards the end of the rotation in the direction of rotation 81 is reduced or prevented.

[0137] If the stop 83 is moved away from the effective range of the retaining cam 51a, as described in connection with FIGS. 7 and 8, the blocking element 51 is moved back to the starting position by the force of the spring element 80. The direction of rotation 81 is maintained. As a result, the blocking element 51 is always moved in only one direction of rotation when used as intended, in this example in the direction of rotation 81.

[0138] When the key 200 is withdrawn, the contact with the transmission element 44 is broken. As a result, it is not possible to enable the blocking element 51 to move back from the release position to the starting position by means of the actuator 52 using the electrical energy of the key 200. This is also not necessary in the locking device 1 according to the disclosure. Rather, the spring element 80 takes over the return of the blocking element 51 from the release position to the starting position by the mechanical tension of the spring element 80.

[0139] The retaining cam 51a and/or the pin 51b are rigid, preferably integral, particularly preferably monolithic with the remaining blocking element 51.

[0140] FIGS. 5 and 6 show selected elements of the locking device 1 from FIG. 4. FIG. 5 shows the arrangement of the locking element 31 in relation to the blocking element 51 and the stator insert element 13 together with stator elements 12. FIGS. 4 and 5 show blocking positions of the blocking element 51.

[0141] The locking element 31 is designed at its contact portion 63 facing the blocking element 51 to be able to move into the cavity 54 when the blocking element 51 is in the release position and the cavity 54 is opposite the contact portion 63 of the locking element 31, i.e. points upwards in FIG. 5. This makes it possible for the locking element 31 to move into the second position.

[0142] A first contact surface 16 of the stator elements 12 facing the locking element 31 is designed to force the locking element 31 towards the blocking element 51 as 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 contact surface 16 is designed as an inclined surface that forces the locking element 31 into the second position.

[0143] The stator elements 12 are movably mounted on the stator insert element 13 between a first position and a second position. The stator elements 12 are forced into the first position by means of first springs 18. The first springs 18 are mounted in the stator 10. The movement of the stator elements 12 from the first position to the second position according to the direction of movement 71 is perpendicular to the direction of movement 70 of the locking element 31.

[0144] During a process for unlocking the rotor 30 relative to the stator 10, the locking element 31 is initially located in the locking element recess 15. The locking element 31 is guided in the rotor 30. In addition, the locking element 31 rests on the first contact surfaces 16 of the stator elements 12. This centres the locking element 31. This position of the locking element 31 is referred to as the rest position. In the rest position, the locking element 31 is preferably arranged at a distance from the blocking element 51.

[0145] A user now wants to unlock the door and inserts the key 200 into the keyway 36. This starts an electronic communication between the key and the control device 53, which electronically determines whether the user is authorised.

[0146] If the user is authorised to unlock the door, the control device 53 controls the actuator 52. The actuator 52, designed as an electric motor, rotates the blocking element 51 into the release position in which the cavity 54 is opposite the locking element 31. If the rotor 30 is now set in rotation by means of the key 200, the locking element 31 slides along one of the first contact surfaces 16 into the second position in which the locking element 31 engages in the cavity 54, wherein the locking element 31 is preloaded into the locking element recess 15 by second springs (not shown). The locking element 31 then moves in the direction of movement 70 due to the rotation of the rotor 30.

[0147] The stator elements 12 remain in the first position. This is made possible by the fact that the first springs 18 exert a higher force on the stator element 12, along which the locking element 31 slides, than the second springs (not shown), which force 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 that of the first contact surfaces 16 into which the locking element 31 is rotated. The locking element 31 is surrounded by the first contact surfaces 16 in both directions of rotation, such that rotation in both directions when it rests on one of the first contact surfaces 16 causes the locking element 31 to move into the second position. In order to provide first contact surfaces 16 in both directions of rotation, the locking element recess 15 is surrounded on both sides by stator elements 12.

[0149] As shown in FIG. 6, the stator 10 has second contact surfaces 17, which leave the locking element 31 in the first position. The second contact surfaces 17 are used functionally when the user is not authorised to unlock the door. The second contact surfaces are formed in or on the stator insert element 13. If the locking element 31 is in the rest position, the second contact surfaces 17 are further away from the locking element 31 than the first contact surfaces 16.

[0150] Preferably, the second contact surfaces 17 are also inclined, but opposite to the first contact surfaces 16 with respect to the direction of movement 70 of the locking element 31. The second contact surfaces 17 thus form an obtuse angle to the direction of movement 70 of the locking element 31.

[0151] At its end facing the stator insert element 13, the locking element 31, viewed along the axis of rotation of the blocking element 51 and/or the rotor axis 35, has a cross-section having the shape of a symmetrical trapezoid tapering in the direction of the blocking element 51. The legs of this trapezoid form head surfaces 60 on the outside in relation to the locking element 31. The head surface 60 and the corresponding contact surface 17 are inclined to the direction of movement of the locking element 31.

[0152] If the user is not authorised to unlock the door, the following procedure occurs. The locking element 31 is initially in the rest position. A key 200 without locking authorisation is inserted into the keyway 36. The electronic data exchange shows that there is no authorisation to unlock the door. Therefore, the actuator 52 is not activated and the blocking element 51 remains in a blocking position in which the cavity 54 is not opposite the locking element 31, as shown in FIGS. 4 and 5, in particular in the starting position. Rather, an outer circumference of the blocking element 51 is opposite the locking element 31.

[0153] If the rotor 30 is rotated, the locking element 31 tries to slide along the first contact surface 16. However, this is not possible because the locking element 31 rests on an outer circumference of the blocking element 31. Thus, the locking element 31 cannot be pushed into the second position against the force of the second springs (not shown).

[0154] Instead, the stator element 12, which is located in the direction of rotation 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 rests against the second contact surface 17. The stator element 12 is now in the second position. In this case, the head surface 60 of the locking element 31 comes into contact with the corresponding second contact surface 17 opposite one of the legs of the trapezoid. If an attempt is made to turn the rotor 30 with force using the key 200, the arrangement shown does not generate a higher force from the locking element 31 on the blocking element 51.

[0155] The contact surface 17 is designed such that the contact surface 17 holds the locking element 31 in the first position. Thus, the rotor 30 remains blocked by the locking element 31, such that the door cannot be unlocked.

[0156] Each of the contact surfaces 17 corresponds to a respective side of the facing head surface 60 of the locking element 31. The surface 60 and the corresponding contact surface 17 are designed such that the contact surface 17 is located between the surface 60 and the blocking element 51 when the locking element 31 rests against the contact surface 17.

[0157] If an attempt is made to rotate the rotor 30 further, the locking element 31 slides away from the blocking element 51 against the direction of movement 70. This is achieved by the inclination of the second contact surface 17. The locking element 31 can slide with the head surface 60 along the second contact surface 17. Thus, the locking element 31 and the blocking element 51 can be spaced apart from each other when they rest on the second contact surface 17. Additionally or alternatively, the forces acting on the locking element 31 during a further attempted rotation of the rotor 30 are diverted into the second contact surface 17. This is helped by the fact that the head surfaces 60 correspond to the second contact surfaces and thus the locking element 31 lies flat against the second contact surface.

[0158] This prevents damage to the blocking element 51, and it does not absorb the forces that arise when an attempt is made to forcibly rotate the rotor 30 in the stator 10. In particular, this makes it possible to make the blocking element 51 filigree and, for example, to mount it only on one side or to accommodate it on a thin shaft of the electromechanical actuator 52 designed as a motor.

[0159] The locking element recess is provided with the reference number 15. FIG. 6 shows the arrangement of FIG. 5 seen from one end of the locking element 31, only without the blocking element 51. Here, the stator elements 12 are in the second position. The same reference numerals in FIG. 6 are deemed to be described in FIG. 6 due to the description of FIG. 5.

[0160] FIGS. 7 and 8 show selected components such as the extension element 40, the electromagnetic actuator assembly 50 with the electromagnetic actuator 52 and with the blocking element 51 which can be rotated by the latter.

[0161] The extension element 40 is movable linearly parallel to the rotor axis 35, i.e. in and against the direction of the arrow 79 (see FIG. 10), between an insertion position that the extension element 40 assumes when the key 200 is inserted, and a withdrawal position that the extension element assumes when the key 200 is withdrawn. The extension element 40 is forced into the withdrawal position of the key 200 by means of a spring 49. The extension element 40 is guided in a guide 65 of the rotor 30 (see FIG. 4).

[0162] The extension element 40 can bridge the distance between the key 200 and the coupling part 41.

[0163] In FIG. 7, the locking element 31 is shown at the side of the extension element 40. On the rear side, the extension element 40 has a portion 86 for pushing the coupling part 41, to which the stop 83 is attached on the underside.

[0164] The extension element 40 is angled in the example shown. In this case, a first part of the extension element 40, which is intended for interaction with the key 200, extends radially further outward than a second portion 86 of the extension element 40, which is intended for interaction with the coupling part 41. This allows the portion 86 to be arranged more centrally in order to be able to push the coupling part 41 better.

[0165] The extension element 40 is designed to push the coupling part 41, but without being in engagement in a form-fitting manner with the coupling part 41. This allows the extension element to be designed in a filigree manner.

[0166] If the extension element 40 is brought into the withdrawal position, the coupling part 41 remains in connection with the driver 103 due to the lack of a form-fitting connection. In the withdrawal position, however, the extension element 40 allows the coupling part 41 to come out of the operative connection with the driver 103, e.g. by a movement of the coupling part 41 from the other side of the door. In the insertion position, however, the extension element 40 blocks the movement of the coupling part 41 from the operative connection with the driver 103.

[0167] The extension element 40 mechanically holds the blocking element 51 in the release position. If the extension element 40 is in the insertion position, the stop 83 of the extension element 40 lies in the rotation path of the retaining cam 51a. Thus, the blocking element 51 with the retaining cam 51a rests against the stop 83 of the extension element 40 in the release position.

[0168] Here, the retaining cam 51a presses perpendicular to the direction of movement of the extension element 40. As a result of this and the axial spatial extension of the stop 83 and the retaining cam 51a, a certain error tolerance is possible with regard to the position of the insertion position of the extension element.

[0169] The extension element 40 mechanically returns the blocking element 51 from the release position to the starting position. The extension element 40 can be moved back into the withdrawal position when the key is withdrawn. When the extension element moves into the withdrawal position, a movement of the blocking element 51 into the blocking position can be caused or permitted. This is made possible by the fact that the stop 83 of the extension element 40 in the withdrawal position lies outside the rotation path of the retaining cam 51a. Thus, the stop 83 can no longer prevent a movement of the blocking element 51 by the pretensioned spring element 80 into the starting position. Rather, the stop 83 is located further forwards with respect to the rotor axis 35. In other words, in the withdrawal position of the extension element 40, the retaining cam 51a is located between the stop 83 and the connecting portion 38 in the axial direction. In the withdrawal position of the extension element 40, the stop 83 is located between the front face 37 and the retaining cam 51a in the axial direction. FIGS. 7 and 8 show the withdrawal position.

[0170] In the insertion position of the extension element 80, however, the stop 83 and the retaining cam 51a are axially equidistant from the connecting portion 38 and/or the side face 37.

[0171] In the insertion position, the extension element 40, in particular the stop 83, prevents the blocking element 51 from reaching the release position in the second direction of rotation. Rather, before reaching the release position, the retaining cam 51a would hit an area 83a (below in FIG. 8) of the stop 83. The first direction of rotation, on the other hand, is particularly protected against manipulation due to the longer angle of rotation range required to reach the release position. In the withdrawal position, however, the coupling part 41 is not engaged or would move out of operative connection with the driver 103 when the rotor 30 rotates.

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

[0173] When the electromechanical actuator 52 is activated, the blocking element 51 is rotated anti-clockwise in the view shown here, such that this rotation, under pretension of the spring element 80, moves the retaining cam 51a to rest against the stop 83 of the extension element 40. By this rotation of the blocking element 51, the cavity 54 can be rotated into the corresponding position with the locking element 31.

[0174] If the key 200 is withdrawn again, the stop 83 moves out of the range of movement of the retaining cam 51a, and the blocking element 51 rotates back into the starting position by the spring element 80, in which the locking element is pressed back into the locking element recess 15 by the second springs and the locking device 1 is locked again.

[0175] If the key 200 is inserted again and the extension element 40 is pushed back into the insertion position, the stop 83 moves back into the range of motion of the retaining cam 51a, and when the electromechanical actuator 52 is activated again, the retaining cam 51a again comes to rest against the stop 83. The blocking element 51 can always be rotated by the electromechanical actuator 52 in the same direction of rotation and always over the same angle of rotation until the spring element 80 rotates the blocking element 51 over the last angle portion into the release position. If the key 200 is withdrawn, the electromechanical actuator 52 does not have to be activated again because the spring element 80 causes the blocking element 51 to be rotated back to the starting position.

[0176] An engagement element 74 of the extension element 40 serves to engage with a key 200. This ensures that the key 200 pulls the extension element 40 along when the key is removed.

[0177] An annular projection 22 is shown consisting of two, in particular, half-shell-like parts, the inner surfaces 26 of which facing each other interact with the key 200 in the manner of a bayonet lock. The parts are inserted into a circumferential groove 45 of the first rotor element 32 (see FIG. 4). Outwardly projecting projections 25 of the annular projection 22 fix the parts of the projection 22 in the stator body 11 in their relative position to each other and to the stator body 11. The annular projection 22 interacts with the inserted key 200, preferably in a bayonet-like manner, as a key withdrawal lock. The projection 22 prevents the key 200 from being pressed by the spring 49 of the locking device 1 when the key 200 is inserted, such that the extension element 40 prematurely reaches the withdrawal position and thus the blocking element 51 reaches the blocking position or at least pushes the blocking element 31 out of the second position.

[0178] A locking element 61 is provided that holds the rotor 30 in position with respect to the stator 10 by engaging in a notch 69 (see FIG. 4). In this case, rotation of the rotor 30 is inhibited by the locking element 61 in the stator such that the locking element 31 can assume the rest position.

[0179] As shown in FIG. 10, the keyway 36 ends with a wall 36a. As shown in FIG. 10, only a portion of the extension element 40, which is designed to interact with the key 200, projects into the keyway 36. The wall 36a is essentially closed except for a portion that is necessary for the extension element 40 to protrude into the keyway. Because the extension element 40 is designed to be filigree, at least with the part of the extension element 40 that projects into the keyway 36, the wall 36a can close off the keyway 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 keyway 36 can be made correspondingly short.

[0180] The contact elements 44 are spring-mounted on a housing 46.

[0181] The housing 46 also axially fastens the rotor elements 32, 33 to one another. For this purpose, the housing 46 comprises a first locking element 47 that locks into the first rotor element 32. For this purpose, the first rotor element 32 comprises an edge 78. The housing 46 comprises a second locking element 48 that locks into the second rotor element 33. For this purpose, the second rotor element 33 comprises a groove (not shown).

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

[0183] The installation device 1 can also be used in other closing devices, for example in a half cylinder, a knob cylinder, a furniture cylinder or a padlock.

[0184] It is conceivable that the coupling part 41 is missing. Rather, closing devices according to the disclosure can be provided in which the driver 103 is rigidly attached to the rotor 30. The driver 103 can also serve as a bolt itself, e.g. in a furniture lock. If the coupling part 41 is missing, the extension element 40 continues to hold the blocking element 51 against the spring force of the spring element 80 in the release position.

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

[0186] The stator insert element 13 and the stator body 11 can be formed as one piece. It is also conceivable that the casing 14 is missing and the stator body is fastened directly in the closing device housing 101.

[0187] In a further alternative of the disclosure, the locking device 1 is not designed as an installation device 1. Rather, the stator 10 is designed as a closing device housing 101. Thus, the rotor 30 can be designed to be inserted directly into a closing cylinder housing 101. The closing device housing 101 then takes over the function of the stator 10.

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

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

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

[0191] The design of the disclosure is not restricted to the preferred exemplary embodiment indicated above. In fact, a number of variants is conceivable which make use of the represented solution even in the case of fundamentally different designs. All features and/or advantages emerging from the claims, the description or the drawings, including constructive details or spatial arrangements, may be essential to the disclosure by themselves and in the most varied combinations.