LOCKING DEVICE WITH A STATOR, A ROTOR, AND AN ANTI-PULL-OUT DEVICE

Abstract

A locking device includes a stator, with a rotor, and with an anti-pull-out device for preventing a key from being pulled out over a rotational angle range, wherein the anti-pull-out device can be moved into a first position and into a second position, wherein the anti-pull-out device has an elastic design, wherein the elastic effect forces the anti-pull-out device into the second position. The anti-pull-out device has a bent annular region for operatively connecting to the key, wherein the bent annular region includes at least one gap in the first position for introducing a key, wherein in the second position of the anti-pull-out device, the gap is modified such that the key is prevented from being inserted or from being pulled out.

Claims

1. A locking device comprising: a stator, a rotor, and an anti-pull-out device for preventing a key from being pulled out over a rotational angle range, wherein the anti-pull-out device is moved into a first position and into a second position, wherein the anti-pull-out device has an elastic design, wherein the elastic effect forces the anti-pull-out device into the second position, wherein the anti-pull-out device has a bent annular region for operatively connecting to the key, wherein the bent annular region comprises at least one gap in the first position for introducing a key, wherein in the second position of the anti-pull-out device, the gap is modified such that the key is prevented from being inserted or from being pulled out wherein when the key is rotated with the rotor of the locking device, the key assumes different rotational positions with respect to the stator and thus with respect to the anti-pull-out device, wherein in at least one rotational position, which corresponds to at least one start position, the key can be withdrawn, wherein in other rotational positions, which are designed as locking positions, the key is prevented from being withdrawn by the anti-pull-out device.

2. The locking device according to claim 1, wherein the gap in the second position is formed with a smaller width than in the first position, wherein in the second position the width of the gap is reduced such that the width of the gap is smaller than the width of the key and/or wherein in the first position the width of the gap is formed greater than or equal to the width of the key.

3. The locking device according to claim 1, wherein the anti-pull-out device is formed with a first end and with a second end, wherein the first end and the second end are moved against each other from a transition from the first position to the second position such that the width of the gap is smaller in the second position than in the first position.

4. The locking device according to claim 1, wherein the annular bent region comprises at least a first partial region, a first protective element part and a second partial region, a second protective element part, wherein the first partial region and the second partial region, the first and the second protective element part, are forced towards one another by the elastic effect.

5. The locking device according to claim 1, in that the annular bent region comprises at least one stop with which a position of the annular bent region in the second position is defined against the elastic effect, wherein at least a first and a second stop are provided, wherein the elastic effect forces the first partial region in a first direction and the second partial region in a second, opposite direction, wherein the first stop limits the movement of the first partial region in the first direction and the second stop limits the movement of the second partial region in the second direction.

6. The locking device according to claim 1, wherein the anti-pull-out device comprises a spring device, wherein the spring device forces the rest of the anti-pull-out device into the second position.

7. The locking device according to claim 1, wherein the anti-pull-out device comprises a first sliding surface in order to be moved into the first position against the elastic force, against the force of the spring device, when the key is inserted and/or wherein the anti-pull-out device comprises a second sliding surface in order to be moved into the first position against the elastic force, by the force of the spring device, when the key is withdrawn.

8. The locking device according to claim 1, wherein the spring device is designed as a leaf spring adapted to the contour of the remaining anti-pull-out device, the first and second protective element parts.

9. The locking device according to claim 1, wherein the anti-pull-out device is inserted in a groove of the rotor, in particular a first rotor element of the rotor.

10. The locking device according to claim 1, wherein during a rotation of the key the anti-pull-out device is fixed in the stator in a rotationally fixed manner in the first position and in the second position.

11. The locking device according to claim 1, wherein the locking device comprises a latching device to inhibit a movement of the rotor towards the stator, wherein the latching device springs back parallel to a rotor axis of the locking device during a latching process.

12. The locking device according to claim 1, wherein the locking device comprises an extension element, wherein the extension element assumes an insertion position when the key is inserted and a withdrawal position when the key is withdrawn, wherein a mechanical force store is provided that forces the extension element into the withdrawal position, wherein in the case of an inserted key the anti-pull-out device, in the second position against the force of the force store, prevents movement of the extension element from the insertion position into the withdrawal position.

13. The locking device according to claim 1, wherein the locking device comprises a blocking element, wherein a starting position and a release position can be assumed by the blocking element, wherein when the extension element is in the insertion position and the blocking element is in the release position, the extension element blocks a movement of the blocking element into the starting position, wherein a spring element is provided that forces the blocking element in the release position against the extension element.

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

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

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0113] The disclosure will be described below in more detail on the basis of an exemplary embodiment. Technical features with identical functions are provided with identical reference numerals in the figures. In the figures:

[0114] FIG. 1 shows a closing device according to the disclosure and a key, which together form a closing system according to the disclosure.

[0115] 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,

[0116] FIG. 3 shows the locking device according to the disclosure from FIG. 2 without casing and a coupling part,

[0117] FIG. 4 shows a locking device from FIG. 3 without casing and stator body in an exploded view showing the anti-pull-out device according to the disclosure,

[0118] FIG. 5 shows selected elements of the locking device from FIG. 4,

[0119] FIG. 6 shows selected elements of the locking device from FIG. 4 in a side view,

[0120] FIG. 7 shows a sectional view through the locking device and

[0121] FIG. 8 shows a perspective view of the electromechanical actuator assembly, the extension element and the anti-pull-out device,

[0122] FIG. 9 shows a key for the locking and/or closing device according to the disclosure and

[0123] FIG. 10 shows a slightly perspective front view of a locking device according to the disclosure without a first rotor element.

DETAILED DESCRIPTION OF THE DRAWINGS

[0124] FIG. 1 and FIG. 2 show a closing device 100 in the form of a closing cylinder, as used in mortise locks, in order to unlock a building door as a closure element or 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 moves a bolt in the locking or unlocking direction.

[0125] 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. The key 200 together with the closing device 100 according to the disclosure forms a closing system 300 according to the disclosure.

[0126] 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 authorization to unlock the door. The key 200 is preferably designed without a mechanical coding. Therefore, only the electronic locking secret can be used to determine whether the user has authorization or not. The keys and the locking devices can be identical in terms of their external shape and thus also mechanically. The key 200 further comprises a battery (not shown) to supply the locking device with electrical energy.

[0127] 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 region, recesses 104, of which the right-hand recess is provided with a reference numeral. 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, such that both parts 103, 105 are arranged in a rotationally fixed manner with respect to one another.

[0128] A connecting portion 38 of the locking 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, such that the coupling part 41 is arranged to be guided and movable along the rotor axis 35 of the rotor 30.

[0129] 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 through 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.

[0130] 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.

[0131] The rotor 30 comprises the first rotor element 32 and a second rotor element 33.

[0132] 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 and arranged to rotate in the stator body 11.

[0133] 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.

[0134] According to the disclosure, the locking device 1 comprises an anti-pull-out device 22, of which a projection 25 of several projections is shown in FIG. 3, which engage in corresponding recesses 96 of the stator 10. The recesses 96 thus serve as a first form-fitting means and the projections 25 as a second form-fitting means. Due to the form-fitting means, the anti-pull-out device does not rotate with the rotor 30, but remains essentially stationary in the stator 10.

[0135] FIG. 4 shows the locking device 1 without casing 14 and stator body 11 in a partially disassembled state, in which the individual elements are displaced against each other similar to an exploded view.

[0136] The anti-pull-out device 22 is shown on the right in FIG. 4. The anti-pull-out device 22 has a first protective element part 87 and a second protective element part 90. The protective element parts 87 and 90 have the shape of a half ring and/or have a rectangular ring cross-section. The protective element parts 87, 90 are formed separately from each other and are not directly connected to each other. On the outer circumferential surface of the protective element parts 87 and 90 there are projections 25 that engage cavities 96 in the stator when the protective element parts 87 and 90 are mounted thereon.

[0137] The anti-pull-out device 22 is thus annular. The protective element parts 87, 90 together form an annular bent region of the anti-pull-out device 22.

[0138] The anti-pull-out device 22 has a gap 89 at a circumferential position (see FIG. 8). The key 200 can be inserted into the keyway 36 through the gap 89. The key 200 has a recess 201 for engagement of the anti-pull-out device 22 (see FIG. 9).

[0139] If the key 200 is inserted through the gap 89 into the keyway 36, the key 200 initially assumes a start position. The key 200 can then be rotated together with the rotor 30. The key assumes different rotational positions in relation to the stator 10 and thus in relation to the anti-pull-out device 22. If the key 200 is rotated relative to the starting position, the anti-pull-out device 22 engages in the recess 201 of the key 200. As a result, the key 200 engages behind the anti-pull-out device 22, so that withdrawal of the key is prevented. The key is in a locking position.

[0140] If the key 200 is inserted into the keyway 36, the key 200 can engage behind the protective element parts 87 and 90 in the locking positions when rotated, so that the key 200 cannot be withdrawn. Only when the key 200 again assumes the start position does the recess 201 again come out of engagement with the anti-pull-out device 22, so that the key 200 can be withdrawn. Thus, the anti-pull-out device 22 and the key 200 interact like a bayonet lock.

[0141] According to the disclosure, the withdrawal of the key 200 is inhibited even in the start position. For this purpose, the anti-pull-out device 22 is designed to be spring-loaded. In the exemplary embodiment, the anti-pull-out device comprises a spring device 88. The spring device 88 presses the protective element parts 87 and 90 together. If the protective element parts 87 and 90 are pressed together by the spring device 88, the gap 89 is changed such that insertion or withdrawal of the key 200 is inhibited. This is achieved by reducing the gap 89 such that the width b of the gap 89 is less than the width of the key 200 at the level of the recess 201. The width of the key can be seen in FIG. 9 perpendicular to the plane of the page. Of course, the key 200 can have a different width, in particular in the height of the bow. The spring device 88 presses the two protective element parts 87 and 90 together in the region of the gap 89. This corresponds to the second position of the anti-pull-out device 22. If, however, the key 200 is inserted, the protective element parts 87 and 90 spring up slightly, increasing the gap b, so that the anti-pull-out device 22 assumes the first position

[0142] The gap 89 thus has a larger gap dimension b in a first position for inserting the key 200 than in a second position, so that in the second position of the anti-pull-out device 22 the withdrawal of the key 200 is inhibited.

[0143] The first position of the anti-pull-out device 22 is the position of the protective element parts 87 and 90 in which the width b of the gap 89 is greater than or equal to the width of the key 200. The second position of the anti-pull-out device 22 is the position of the protective element parts 87 and 90 in which the width b of the gap 89 is smaller than the width of the key 200. The second position is taken when the key is outside the keyway 36. The second position is assumed when the key is already completely inserted into the keyway 36, such that rotation of the key 200 causes the anti-pull-out device 22 to engage in the recess 201. The first position is taken during insertion or withdrawal of the key 200. The key 200 presses the protective element parts 87, 90 apart against the force of the spring device 88 and thereby enlarges the gap 89.

[0144] In other words, the protective element parts 87, 90 can be pressed apart against the force of the spring device 88. This makes the gap b equal to or larger than the width of the key 200 so that the key can be inserted or withdrawn.

[0145] The anti-pull-out device 22 has a first sliding surface 98 in FIG. 10 in order to be moved into the first position against the force of the spring device 88 when the key 200 is inserted. The anti-pull-out device 22 comprises a second sliding surface 94 in order to be moved into the first position when the key 200 is withdrawn against the force of the spring device 88 (see FIG. 8).

[0146] The key 200 accordingly comprises a first sliding portion 203 for interacting with the first sliding surface 98 and/or a second sliding portion 204 for interacting with the second sliding surface 94.

[0147] The spring device 88 is designed as a leaf spring adapted to the contour of the anti-pull-out device 22. Thus, the entire anti-pull-out device 22 is designed to be bent in an annular manner.

[0148] The anti-pull-out device 22 has a first and a second end 95, 97 at the gap 89. The first protective element part 87 comprises the first end 95 and the second protective element part 90 comprises the second end 97. In the first position of the anti-pull-out device 22, the ends 95, 97 are spaced apart from each other. In the second position, which is shown in FIGS. 8 and 10, the ends 95, 97 abut one another, so that the width b of the gap 89 is defined by the abutment. The ends 95, 97 thus serve as a first and a second stop of the anti-pull-out device 22, by which the width b of the gap in the second position is defined.

[0149] The projections 25 lie with play in the cavities 96 such that a movement of the protective element parts 87, 90 from the first position to the second position and vice versa is possible.

[0150] The anti-pull-out device 22 is inserted into a groove 45 of the rotor 30, in particular of the first rotor element 32. This results in a simple assembly, since the spring device 88 clamps the anti-pull-out device 22 to the first rotor element 32 similar to a snap ring. However, the rotor 30 can be rotated without the anti-pull-out device 22 rotating, such that during rotation of the key 200 the anti-pull-out device 22 is fixed in the stator 10.

[0151] In both the first position and the second position, the anti-pull-out device 22 is fixed in the stator 10 in a rotationally fixed manner, but with play.

[0152] The spring device 88 is adapted to the contour of the remaining anti-pull-out device 22 and is applied to the outside circumference thereof. Thus, the anti-pull-out device 22 is designed in such a way that it is particularly small and easy to install.

[0153] For the same reason, the rotor 30 comprises the first and second rotor elements 32, 33.

[0154] During assembly, the first rotor element 32 can be inserted into the stator 10 from the front side 37. The first rotor element 32 is fixed axially in and against the direction of the arrow 71 by a snap ring 72. The snap ring 72 is arranged in a groove 73 of the first rotor element 33.

[0155] An end surface 66 covers an outer surface of the stator 10. As a result, the first rotor element 32 also prevents the anti-pull-out device 22 from being withdrawn forwards from the locking device 1 in the opposite direction to the arrow direction 71.

[0156] The anti-pull-out device 22 with the first protective element part 87 and the second protective element part 90 is inserted into the groove 45, which borders on the end surface 66.

[0157] A circumferential projection 43 (see FIG. 4) of the second rotor element 33, here as a collar, serves as a stop of the second rotor element 33 on the stator 10. The second rotor element 33 can be inserted from a base side 23 of the stator 10 until the projection 43 rests against the base side 23. The projection 43 is preferably formed integrally with the second rotor element 33. Due to the one-piece design, the second rotor element 33 can only be inserted into the stator 10 from the base side 23.

[0158] By the projection 43 abutting against the base side 23, the second rotor element 33 is fixed axially towards the front side 37 against the direction of the arrow 71. The second rotor element 33 is inserted into the stator 10 from a base side 23 of the stator 10 during assembly without the first rotor element 32.

[0159] After insertion, the first and second rotor elements 32, 33 are connected to one another in a rotationally fixed manner, in particular in a reversibly detachable manner. Due to the division into rotor elements 32, 33, assembly of the rotor 30 is particularly easy. By connecting the two rotor elements 32, 33, the resulting rotor 30 is axially fixed forwards and backwards, i.e. with and against the direction of the arrow 71.

[0160] The first rotor element 32 comprises fastening means 67 and the second rotor element 33 comprises corresponding fastening means 68, which engage in a form-fitting manner so that the first rotor element 32 and the second rotor element 33 are fastened to one another in a rotationally fixed manner. Here, the first and second fastening means 67, 68 are designed as projections and corresponding recesses.

[0161] As a transmission device 44, the locking device 1 comprises contact elements that transmit data and/or electrical energy to the locking device 1 via an electrical contact with the key 200. The contact elements 44 are spring-mounted on a housing 46.

[0162] The housing 46 also axially fastens the rotor elements 32, 33 to one another. For this purpose, the housing 46 comprises a first latching element 47 that latches into the first rotor element 32. For this purpose, the first rotor element 32 comprises an edge 78. The housing 46 comprises a second latching element 48 that latches into the second rotor element 33. For this purpose, the second rotor element 33 comprises a groove 77.

[0163] The first rotor element 32 has a larger diameter than the second rotor element 33. As a result, the part of the stator body 11 that surrounds the second rotor element 33 is formed with a greater wall thickness than the part of the stator body that surrounds the first rotor element 32.

[0164] Both the first rotor element 32 and the second rotor element 33 are designed to suit their functions.

[0165] The first rotor element 32 has a large diameter so that the anti-pull-out device 22 can be arranged on the first rotor element 32. In addition, the first rotor element 32 houses the keyway 36.

[0166] On the other hand, the opening 21 is provided in the part of the stator 10 that surrounds the second rotor element 33. The opening 21 is formed both in the shell 14 and in the stator body 11. Here, the opening 21 is formed in the part of the stator 10 with the greater wall thickness, so that a secure fastening of the installation element 1 in the closing device housing 101 is provided.

[0167] The locking device 1 has a latching device 61 to inhibit a movement of the rotor 30 towards the stator 10, wherein the latching device 61 springs back parallel to a rotor axis 35 of the locking device 1 during a latching process. The latching element 61 is arranged in the stator 10 and engages in a recess 69 of the first rotor element 32. The axial mobility of the latching device 61 is made possible by the different diameters of the rotor elements 32, 33. The latching device 61 provides haptic feedback when the key 200 is in the start position.

[0168] The rotor elements 32, 33 can be made of different materials. For example, the first rotor element 32 is made of a harder or more (wear-) resistant material than the second rotor element 33. This is particularly useful because the first rotor element 32 is designed to accommodate the key 200 and is therefore exposed to greater mechanical loads than the second rotor element 33. This also makes it easy to provide protection against drilling. For example, the first rotor element 32 may be made of a ceramic material.

[0169] FIG. 4 shows an extension element 40 designed to interact mechanically with the key 200. 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 element 40 can be moved linearly between a withdrawal position and an insertion position. When the key 200 is inserted, the extension element 40 assumes the insertion position in which the extension element 40 is displaced in the direction of the driver 103 compared to the withdrawal position. When the key 200 is withdrawn, the extension element 40 assumes the withdrawal position.

[0170] The extension element 40 moves the coupling part 41 (see FIG. 2) away from the rotor 30 in the direction of the driver 103 such that the coupling part 41 can come into rotational engagement with the driver 103. A passage 39 is provided in the connecting portion 38 such that the extension element 40 can come into contact with the coupling part 41. Either the extension element 40 or the coupling part 41 can protrude through the passage 39. The extension element 40 will be described in more detail later in connection with FIGS. 7 and 8.

[0171] The transmission device 44, here for example in the form of contact elements, is spring-mounted on the housing 46. 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 in the form of an electrical circuit board is coupled to the transmission device 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 authorized to open the associated door and/or if the control device 53 has an opening command, an electromechanical actuator assembly 50 is activated.

[0172] 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.

[0173] 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. 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. A more detailed description of the interaction of the spring element 80 with the blocking element 51 follows in connection with FIG. 5.

[0174] Furthermore, as shown in further conjunction with FIG. 5, a locking element 31 is provided, which is mounted in the second rotor element 33 so as to be movable towards and away from the blocking element 51, preferably perpendicular to the rotor axis 35. In a first locking element position shown here, the locking element 31 is located in a locking element recess 15 formed by the stator insert element 13 and the stator elements 12. This prevents the second rotor element 33 and thus the coupling part 41 from being rotated. Turning the inserted key 200 to unlock the corresponding lock is thus prevented. In a second locking element position of the locking element 31 (not shown), the latter 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.

[0175] 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. The blocking element 51 is rotatable between a release position 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. FIGS. 4 and 5 show blocking positions of the blocking element 51. A starting position of the blocking element 51 corresponds to a blocking position in the unactuated state of the locking device 1.

[0176] 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 reach the second locking element position.

[0177] A first contact surface 16 of the stator elements 12 facing the locking element 31 is designed to force the locking element 31 in the direction of the blocking element 51 as the rotor 30 continues to rotate, i.e. into the second locking element 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 locking element position.

[0178] 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 springs 18. The springs 18 are mounted in the stator 10. The movement of the stator elements 12 from the first position to the second position is perpendicular to the direction of movement 70 of the locking element 31.

[0179] 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 locking element position of the locking element 31 is called the rest position. In the rest position, the locking element 31 is preferably arranged at a distance from the blocking element 51.

[0180] 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 authorized.

[0181] If the user is authorized 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 locking element position, in which the locking element 31 engages in the cavity 54, wherein the locking element 31 is pretensioned into the locking element recess 15 by springs (not shown). The locking element 31 then moves in the direction of movement 70 due to the rotation of the rotor 30.

[0182] The stator elements 12 remain in the first position. This is made possible by the fact that the springs 18 exert a higher force on the stator element 12, along which the locking element 31 slides, than the springs (not shown) which urge the locking element 31 upwards into the locking element recess 15.

[0183] 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, so that rotation in both directions when it rests on one of the first contact surfaces 16 allows the locking element 31 to move into the second locking element position.

[0184] As shown in FIG. 6, the stator 10 has second contact surfaces 17 that leave the locking element 31 in the first locking element position. The second contact surfaces 17 are used functionally when the user is not authorized to unlock the door. The second contact surfaces 17 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.

[0185] 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.

[0186] 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 in 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.

[0187] If the user is not authorized to unlock the door, the following procedure occurs. The locking element 31 is initially in the rest position. A key 200 without locking authorization is inserted into the keyway 36. The electronic data exchange shows that there is no authorization 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. Rather, an outer circumference of the blocking element 51 is opposite the locking element 31.

[0188] 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 locking element position against the force of the springs (not shown).

[0189] 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 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.

[0190] The contact surface 17 is designed such that the contact surface 17 holds the locking element 31 in the first locking element position. Thus, the rotor 30 remains blocked by the locking element 31, so that the door cannot be unlocked.

[0191] 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.

[0192] The locking element recess is provided with the reference numeral 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.

[0193] Furthermore, with regard to FIG. 5, the spring element 80 designed as a torsion spring is shown, which surrounds the blocking element 51 and the electromagnetic actuator 52. The spring element 80 is rigidly clamped on the rear side with its end portion there in a manner not shown, and the spring element 80 has a torsion leg 80a that merges into a contact leg 80b angled approximately 90 from this and pretensioned against a pin 51b on the blocking element 51. The pretension 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.

[0194] If the electromechanical actuator 52 is energized, the blocking element 51 is rotated anti-clockwise in the view shown here, such that the pretension in the torsion leg 80a of the spring element 80 changes as a result of this rotation and finally decreases again after passing through a dead centre. By this rotation of the blocking element 51, the cavity 54 can be rotated into the corresponding release position with the locking element 31. In order to lock the release position of the cavity 54 corresponding to the locking element 31, 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.

[0195] 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, wherein 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 and during a movement in the second direction, wherein in particular the spring element 80 is designed as a torsion spring.

[0196] The stop 83 of the extension element 40 interacts with a retaining cam 51a of the blocking element 51. If the blocking element 51 is rotated into the release position, the retaining cam 51a can be loaded against the stop 83 when the extension element 40 is in the insertion position. This holds the blocking element 51 in the release position.

[0197] If the extension element 40 is moved back into the withdrawal position against the direction of movement 71, the stop 83 comes out of engagement with the retaining cam 51a. The blocking element 51 then rotates back to the starting position, wherein the reverse rotation is effected by applying force to the spring element 80. The rotation also occurs anti-clockwise according to the arrow 81. Thus, in the withdrawal position, the extension element allows movement of the blocking element 51 by means of the spring element 40 into the starting position.

[0198] Without manipulation, the blocking element 51 always rotates anti-clockwise 81.

[0199] FIG. 7 shows a sectional view through the locking device 1, wherein the stator 10 is shown with the stator body 11, and in the stator body 11 the first rotor element 32 and the second rotor element 33 are shown. The first rotor element 32 has the keyway 36 into which the key 200 shown in FIG. 1 can be inserted. The second rotor element 33 merges into the connecting portion 38, which has already been described in connection with FIG. 2. The sectional view is selected such that the extension element 40 is shown within the stator body 11 and at the same time the second rotor element 33 is shown in cross-section. The extension element 40 extends off-centre through the stator body 11 so that the extension element 40 is at a radial distance from the central rotor axis 35.

[0200] The extension element 40 is forced into the withdrawal position by a force store 49, such that the force is applied by the force store 49 against the insertion movement of the key 200.

[0201] The extension element 40 has an elastic engagement element 74. The engagement element 74 is intended for engagement with the key 200. Due to the engagement of the engagement element 74 in the key 200, the extension element 40 can also be moved again when the key is withdrawn from the insertion position into the withdrawal position, in particular if the energy store has been manipulated and therefore the extension element 40 no longer pushes into the withdrawal position.

[0202] The engagement of the engagement element 74 takes place in that the engagement element 74 in the insertion position rests against the inner side 75 of the stator body 11 against the elastic effect of the engagement element 74 and is forced to engage the key 200. In the withdrawal position, however, the engagement element 74 is located in a hollow space 76 inside the first rotor element 32. This makes it possible for the engagement element 74 to slide out of the key 200 due to the elastic force and/or due to a chamfer 202. The hollow space 76 merges into the keyway 36.

[0203] FIG. 8 illustrates the extension member 40 in a perspective view adjacent to the electromagnetic actuator assembly 50. The extension element 40 is pretensioned by the energy store 49 against the direction of movement 71, wherein the pretensioning direction corresponds to the direction in which the extension element 40 is held in the withdrawal position for the key 200. In this position, the engagement element 74 can engage the key 200 when the key 200 is inserted by an operator or release the key 200 when it is withdrawn. During a subsequent insertion movement from the withdrawal position into the insertion position, the energy store 49 is compressed.

[0204] The portion 86 of the extension element 40 is offset with respect to the base body of the extension element 40, wherein the spring 49 is inserted into the base portion of the extension element 40 adjacent to the portion 86. The front side of the portion 86 initiates a thrust movement into the coupling part 41, as shown in FIG. 2. The stop 83 is located on the underside of the portion 86.

[0205] The spring device 88 prevents the energy store 49 from pressing the extension element 40 into the withdrawal position without the help of a user when the key 200 is inserted. Thus, the spring device 88 indirectly prevents the spring element 80 from rotating the blocking element 51 into a blocking position without the intent of a user. This prevents premature locking of the locking device 1. The spring device 88 is designed to be stronger than the energy store 49. Thus, a user must actively pull on the key to force the anti-pull-out device 22 into the first position and to withdraw the key 200, as a result of which the extension element 40 is moved into the withdrawal position and the blocking element 51 is moved into the starting position by the spring element 80. This prevents the locking element 31 from prematurely reaching the first position. Thus, the locking device remains in a release state without a user pulling on the key 200.

[0206] 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.

[0207] 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.

[0208] The driver 103 and the insert 105 can be formed integrally with each other.

[0209] 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.

[0210] 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.

[0211] The transmission device can transmit energy and/or data contactlessly.

[0212] The stator insert element 13 can be formed integrally with the stator body 11. 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.

[0213] The protective element parts 87, 90 can be connected to each other in a hinge-like manner. Instead of the protective element parts, the annular bent region can comprise a first and a second partial region, which are integrally connected to one another by a flexible, hinge-like portion. Furthermore, the first and the second partial region can be designed corresponding to the protective element parts 87,90. Instead of the spring device 88, the protective element parts 87, 90 can be integrally connected to one another in an elastic manner.

[0214] 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 even in the most varied combinations.