EP2172607A2 - Locking cylinder for a lock - Google Patents

Abstract

The lock (1) has a closing cylinder (2) and a shaft (3) which carries a handle, particularly a knob or a bolt at an end side. The closing cylinder has a locking catch (5) rotating around a rotation axis (4) defined by the shaft. A coupling (6) is provided, by which an operative connection between the shaft and the locking catch is shiftable after detection of a password.

Description

The invention relates to a lock cylinder for a lock, with a first shaft, the end carries a handle, preferably a rotary knob or a pawl, and a rotatable about a shaft defined by the axis of rotation arranged locking lug, which cooperates with the shaft, and with a coupling , by means of which after recognition of an authorization code, the operative connection between the shaft and the locking lug is switchable, wherein the operative connection is rotationally fixed and otherwise without rotation when the clutch is switched.

Locks with locking cylinders of the aforementioned type are known per se from the prior art, both in the design as a purely mechanically operating lock cylinder, as well as in the design as a mechanically and / or electronically operating lock cylinder, so it is a separate printed evidence at this Job does not need.

From the DE 102 25 490 B4 With regard to a lock of the aforementioned type, a construction in particular has become known. According to this construction, the lock comprises a lock cylinder having a shaft which is divided into two sections and has a first and a second section which can be brought into operative connection via a coupling. In this case, the coupling between two coaxially arranged parts of the first portion of the shaft is arranged and has two guided in recesses of the second part of the first portion of the shaft rolling body, which for establishing an operative connection between the first part and the second part of the first portion of Shaft by means of a radially or axially movable slide in the circumferential direction of the first part of the first portion of Shaft extending recesses are inserted.

The purpose of the above-described lock construction is to provide a lock which can only be engaged via at least one section of the shaft if an operative connection is established between the two sections of the shaft by means of the coupling.

Although the above construction has been proven in everyday practice, it is not free from disadvantages. Thus, the prior art lock has been found to be unfriendly due to its many components and the subdivided into several sections and parts shaft assembly or disassembly.

It is therefore the object of the invention to improve a previously known lock cylinder in such a way that it has a comparatively uncomplicated construction and can be easily assembled or disassembled. In particular, such a lock cylinder should be characterized by a substantial reduction of its components, which can be combined and assembled with sufficient functional reliability.

In a first solution of this problem, it is provided that the closing nose is rotationally connected to a further shaft which carries a handle at the end.

This embodiment is thus characterized by the fact that, for example, the outside of the door arranged rotary knob is rotatably connected to a shaft which is rotatably connected via the coupling with the second shaft, which second shaft is constantly rotatably connected to the locking lug and the door inside rotary knob. So configured, the locking lug can constantly be moved over the inside door knob and thus the lock can be opened. For a better understanding, it should be noted that such locks and lock cylinders are used in particular in entrance doors of buildings, without thereby other applications, for example in the interior of a building, must be excluded. As a rule, it is provided in the case of such doors that a leaving of a space sealed with such a door from one side, namely from the inside of the room, must be possible at all times. This is also possible Danger situations in which a complementary unlocking of the lock is undesirable. On the outside of the door, on the other hand, an opening of the lock is only to be provided if this is to be done by an authorized person. An authorized person can in this regard a door lock opening code with him, for example, is transmitted wirelessly to a receiver, which then performs an evaluation of the authorization code and the appropriate authorization code, the clutch switches so that the rotationally fixed to the outside door knob connected to the shaft inside rotary knob bearing shaft rotatably coupled. In this verkuppelten position can then be rotated on the outside door side knob of the lock cylinder and the lock on the locking lug are opened.

In this first embodiment of the invention, it is advantageous that the closing lug is rotationally connected to the other shaft, so that the arrangement of the coupling between the two shafts does not necessarily have to be provided in the region of the locking lug. In addition, results in this first solution of the problem, the advantage that the permanent opening possibility by the inside of the door arranged rotary knob structurally simple, since only mechanical design, is possible. As a result, sources of error are avoided in an optionally required connection between the locking lug and the shaft with the inside door knob.

A second solution of the above-described object provides that the coupling has a spring-loaded coupling member which is arranged in a bore of the locking lug and during the coupling process is partially convertible into a bore of the shaft.

In this embodiment, it is for example provided that in the bore of the shaft, a bolt element is arranged, which is reciprocated via an electric motor drive between two positions and forth. In the first position, this bolt element is arranged such that the coupling member received in the locking lug can not penetrate into the bore of the shaft. In this position, therefore, the shaft can be rotated relative to the locking lug. Now, if the electric motor drive is controlled, this moves the bolt element in the bore of the shaft in a second position in which the bolt member releases at least a portion of the bore in the shaft, so that the coupling member at its coaxial Orientation to the hole in the shaft can engage in this hole and the rotation of the shaft, the locking lug is rotated.

Finally, according to a third alternative solution of the above-described problem, it is provided that the coupling has at least one rolling element rolling over the outer surface of the shaft in the circumferential direction and at least one coupling element cooperating with the rolling element, which is slidable in the radial direction of the shaft in a receptacle open to the closing nose the shaft is arranged.

Preferably, this embodiment is further developed in that the rolling element is designed as a ball and that the coupling member has a the rolling element facing and profiled for receiving the rolling element formed end face. The end face cooperates with the rolling element in such a way that the rolling element is locked when the coupling member is pushed out, so that a form-locking coupling is formed between the closing nose and the shaft.

Preferably, in a further feature of this embodiment, it is provided that the rolling element is guided in a bore within the closing nose, wherein the bore is aligned extending deviating from the radial direction of the shaft. By this configuration, the rolling element in the uncoupled state can escape only in a deviating from the radial direction of the shaft direction. In this uncoupled state, the rolling element is pressed in the direction of the shaft via the spring arranged between the end of the bore in the closing nose and the rolling element. Reached the rolling element in the shaft radially extending bore in which the coupling member is arranged, the rolling element moves into this bore, but without coupling, as further rotation of the shaft causes the rolling element is pushed out of the bore. For this purpose, it has proved to be advantageous to form the outer circumferential surface of the shaft facing the bore with a conically enlarging outward diameter, so that arranged in this area inclined surfaces simplify the further rotation of the shaft relative to the rolling element by the locking resistance is reduced. The prerequisite for this, however, is that the rolling element is displaced by the further rotation of the shaft in the bore of the lock cylinder against the spring force.

Now, if the clutch is to be closed, the coupling member is moved in the direction of the rolling element, wherein the coupling member is formed such that it blocks the return path of the rolling element in the bore of the locking lug such that the rolling element in the coupled state not from the bore in the shaft can be moved back into the bore of the locking lug. As a result, a positive coupling is achieved and closed, which essentially depends on corresponding tolerances in this embodiment, which make it possible for the rolling element to engage in the coupled region of the coupling in the end region of the bore in the shaft, but not on further rotation of the shaft can be displaced from this area into the bore of the locking lug.

In the two last-described embodiments of the lock cylinder according to the invention, the peculiarity is that the closing lug is designed to be relatively rotatable with respect to the shaft, which is connected to the door-inside rotary knob. Only in the switched state of the coupling results in a rotatable solid operative connection between the shaft on the one hand and the locking lug on the other. These constructions are characterized by their simplicity, since, in contrast to the prior art, a subdivision of the shaft into sections and parts can be completely dispensed with. In addition, the number of components of such a lock cylinder according to the invention is reduced compared to the prior art and at the same time improves the reliability of such a lock cylinder.

It is provided according to the invention that the closing nose cooperates with the shaft, wherein the operative connection is switchable by means of a clutch after detection of an authorization code. When the clutch is not switched, the shaft and the locking lug are connected to each other without rotation, that is, a rotation of the shaft relative to the locking lug is possible. Opening and / or closing the lock is therefore not possible when the clutch is not switched.

When the clutch is engaged, the operative connection between the shaft and the locking lug is non-rotating. In this case, it is possible to rotate the locking lug for opening and / or closing the lock by means of the shaft, because when clutch is active connection, that is, a forces or torques transmitting connection between the shaft on the one hand and the locking lug on the other hand is formed. The switching of the clutch is only after prior entry of an authorization code possible, so that unauthorized opening and / or closing the lock is not possible.

The embodiments of the invention are characterized by full functionality against the prior art by their relatively simple construction. Instead of a plurality of mutually coupled and / or decoupled shaft sections and / or shaft parts, the structures according to the invention provide only a cooperating with a shaft closing lug, wherein the operative connection is switchable by means of a clutch. Advantageously, the lock cylinder according to the invention can be much easier assembled or disassembled. In addition, the lock cylinder according to the invention proves to be very much störunanfälliger.

It is provided according to a further feature of the invention that the coupling has a radially movable shaft to the coupling pin. In the case of a switched clutch, this coupling pin produces the force-transmitting or torque-transmitting connection between the shaft and the closing nose or the shaft and the second shaft having the closing nose. The coupling pin is preferably located in a bore provided by the shaft, which is aligned in the radial direction and serves as a guide bore for the coupling pin, so that a radial movement of the coupling pin is ensured relative to the shaft. When not switched clutch, so if there is no rotationally fixed connection between the shaft and the locking lug, the coupling pin is fully within the bore of the shaft.

According to a further feature of the invention it is provided that the coupling pin is driven by means of an electric motor, the output side has a worm wheel with a spring guided therein, wherein the spring is articulated with a first portion on the worm wheel and with a second portion on the coupling pin. For articulation of the second portion of the spring on the coupling pin can be provided, for example, that the coupling pin has a bore into which engages the second portion of the spring in the final assembled state of the lock cylinder. By means of the electric motor and the interposed between the coupling pin and the electric motor spring, a motorized method of the coupling pin is possible radially to the shaft. The electric motor is for example battery operated and only after entering a Authorization codes switchable. Once the correct authorization code is entered by a user, for example via an input display, the electric motor starts and moves by means of the intermediate worm wheel and the intermediate spring the coupling pin in the intended manner radially relative to the shaft. To indicate to a user the proper functioning of the electric motor after having previously entered the correct authorization code, acoustic and / or visual signaling devices may be provided.

According to a further feature of the invention, the further shaft non-rotatably connected to the closing nose has a bore into which the coupling pin partially engages with an active portion when the clutch is engaged. If the coupling pin in the manner described above after entering a correct authorization code moved radially to the shaft, so he drives into the bore of the locking lug having another wave. In the properly extended state of the coupling pin engages einendseitig with a working portion in the bore of the locking nose having another wave and the other end with the active portion opposite end portion in the bore of the shaft, whereby the frictional connection or torque between the shaft and the closing nose having further Shaft is formed. In this position of the coupling pin, a force introduced into the shaft via the handle carried by the shaft is transmitted to the closing nose, which in turn operates a lock latch and / or a lock bolt in a manner known per se.

The operative portion of the coupling pin opposite end portion of the coupling pin is preferably equipped with an additional weight. Alternatively, it may also be provided that the end section is otherwise heavier than the active section. This particular embodiment serves in particular the manipulation protection. By rapidly rotating the shaft, for example, with the aid of a drill, the coupling pin could be due to the force acting on him as a result of the rapid rotational movement of the shaft centrifugal force carried to the outside and so undesirably into the bore of the locking lug having shaft driven. If the end portion of the coupling pin, however, formed in the proposed manner heavier than the effective portion, such a manipulation is stopped, because it is always ensured that the heavier in comparison to the active portion end portion of the coupling pin as a result Fliehkrafteinwirkung of the locking lug having shaft, that is, the hole provided thereof, is pushed away.

According to a further feature of the invention it is provided that the shaft and the locking lug having further shaft are latched in a position to each other by means of a locking device, according to the bore in the shaft and the bore in the locking lug having further shaft in the radial direction of the shaft aligned arranged one behind the other.

When not switched clutch, the shaft and the other, the locking lug having shaft can rotate relative to each other, which means that the formed in the other shaft with the locking lug on the one hand and the bore formed in the shaft on the other hand not necessarily in the radial direction of the shaft aligned with each other in alignment. In non-aligned holes of the coupling pin can not be moved in the manner described above to the power coupling or torque coupling of shaft and locking lug, which means that despite entering a correct authorization code a desired lock operation is not possible. In order to enable or simplify a user to align aligned in the shaft on the one hand and in the other wave with the locking lug on the other hand, so as to allow a movement of the coupling pin, a locking device is provided according to the invention. The locking device is designed to be twistable, so that not by means of the locking device a rotationally fixed connection between the closing lug on the one hand and the shaft on the other hand arises.

According to a further feature of the invention it is provided that the closing lug is rotationally connected to the second shaft, which in turn also carries a handle end. This is again a rotary knob. Of course, a standard doorknob can be used here as well. According to the invention, a lock cylinder is thus provided which has a first shaft for operating the lock and a second shaft for operating the lock. In this case, the first shaft may preferably be a shaft for a door outer side and the second, that is a further shaft, a shaft for the inside of the door. It is preferably provided that the further shaft, that is, the shaft for the inside of the door, is rotationally connected to the locking lug, which ensures that the locking lug inside the door can be properly operated in each case. For a proper operation of the locking lug from the outside of the door requires in the previously described manner the formation of a rotationally fixed operative connection of the otherwise non-rotatable operative connection between the door outside shaft on the one hand and the locking lug on the other hand by means of the designated coupling.

According to a further feature of the invention, a key-operated emergency lock is provided, on the outside of the door. By means of this emergency lock, the clutch can be operated by hand, to make it possible to open the lock from the outside of the door even without the use of the electric motor. Such an emergency lock therefore serves, in particular, to satisfy safety-relevant aspects and also to allow access, for example, when in the danger area a person inside the building or room can no longer operate the lock, an access from the outside, for example by medical personnel, but is required.

Fig. 1

eine erste Ausführungsform eines erfindungsgemäßen Schließzylinders in schematischer Explosionsdarstellung;

Fig. 2

eine zweite Ausführungsform eines erfindungsgemäßen Schließzylinders in teilweise geschnitten dargestellter Seitenansicht;

Fig. 3

den Schließzylinder gemäß Fig. 2 in einer perspektivisch dargestellten Explosionsdarstellung;

Fig. 4

eine weitere Ausführungsform eines erfindungsgemäßen Schließzylinders in geschnitten dargestellter Seitenansicht in entkoppelter Stellung;

Fig.5

den Schließzylinder gemäß Fig. 4 in einer Schnittansicht entlang der Schnittlinie V-V in Fig. 4;

Fig. 6

den Schließzylinder gemäß den Fig. 4 und 5 in geschnitten dargestellter Seitenansicht in gekuppelter Stellung;

Fig. 7

den Schließzylinder gemäß Fig. 6 in einer Schnittansicht entlang der Linie VII- VII in Fig. 6;

Fig. 8

eine weitere Ausführungsform eines erfindungsgemäßen Schließzylinders in geschnitten dargestellter Seitenansicht in entkoppelter Stellung;

Fig. 9

ein vergrößert dargestellter Ausschnitt gemäß dem Kreis X in Fig. 8;

Fig. 10

der Schließzylinder gemäß den Fig. 8 und 9 in geschnittener gestellter Seitenansicht in einer gekuppelten Stellung und

Fig. 11

ein vergrößert dargestellter Ausschnitt des Schließzylinders in Fig. 10 gemäß Kreis XI in Fig. 10.

Further features and advantages of the invention will become apparent from the following description of the accompanying drawings. In the drawing show:

Fig. 1

a first embodiment of a lock cylinder according to the invention in a schematic exploded view;

Fig. 2

a second embodiment of a lock cylinder according to the invention in a partially sectioned side view;

Fig. 3

the lock cylinder according to Fig. 2 in an exploded perspective view;

Fig. 4

a further embodiment of a lock cylinder according to the invention in a sectional side view in a decoupled position;

Figure 5

the lock cylinder according to Fig. 4 in a sectional view along the section line VV in Fig. 4 ;

Fig. 6

the lock cylinder according to the Fig. 4 and 5 in cut shown Side view in coupled position;

Fig. 7

the lock cylinder according to Fig. 6 in a sectional view taken along the line VII-VII in Fig. 6 ;

Fig. 8

a further embodiment of a lock cylinder according to the invention in a sectional side view in a decoupled position;

Fig. 9

an enlarged section according to the circle X in Fig. 8 ;

Fig. 10

the lock cylinder according to the Fig. 8 and 9 in cut side view in a coupled position and

Fig. 11

an enlarged section of the lock cylinder in Fig. 10 according to circle XI in Fig. 10 ,

Fig. 1 lets recognize a lock 1 in a first embodiment. The lock 1 has a locking cylinder 2 according to the invention and a shaft 3, which can be equipped end with a not shown in the figures handle.

The lock cylinder 2 is equipped with a locking lug 5, which is rotatable about an axis of rotation 4 defined by the shaft 3 and cooperates with the shaft 3.

The lock 1 further has a clutch 6. By means of this clutch 6, the operative connection between the shaft 3 and the locking lug 5 is switchable, wherein the operative connection in the switched clutch 6 is rotationally and otherwise without rotation. When not switched clutch 6, the shaft 3 is thus relative to the locking lug 5 rotatable so that actuation of the shaft 3 leads to an idle rotation of the shaft 3 relative to the locking lug 5. Only with switched clutch 6, the shaft 3 is rotationally connected to the locking lug 5, so that transmits a rotational movement of the shaft 3 to the locking lug 5.

The coupling 6 has a coupling pin 7 and further coupling parts 35 and 36. The coupling pin 7 is guided in a radial bore 14 of the shaft 3. When not switched clutch 6, as in Fig. 1 is shown, there is the coupling pin 7 completely in the bore 14 of the shaft. 3

For actuating the coupling pin 7, an electric motor 8 is provided. This is arranged within a cavity of the shaft 3 and with respect to the plane of the drawing Fig. 1 protected on the right side by a Bohrschutzscheibe 19. The Bohrschutzscheibe 19 is preferably made of hardened steel, such as a stainless steel. The electric motor 8 is preferably battery-powered and coupled to a worm wheel 9. The worm wheel 9 is in contact with a first portion 11 of a rotatably arranged spring 10. As soon as there is a twisting movement of the worm wheel 9, the first portion 11 of the spring 10 by means of the worm wheel 9 with respect to the plane of the drawing after Fig. 1 conveyed to the left, which leads to a pivoting movement of the spring 10 with the result that a second portion 12 of the spring 10 is raised in the radial direction 16, which in turn leads to a method of the coupling pin 7 in the radial direction 10. As a result of this movement of the coupling pin 7 of this moves from the bore 14 partially out and into a bore 15 of the locking lug 5 inside. In this position of the coupling pin 7, the closing lug 5 and the shaft 3 are coupled to each other in a force-transmitting or torque-transmitting manner, so that a torsional force introduced via the shaft 3 also leads to a rotation of the locking lug 5. A decoupling, that is, a separation of locking lug 5 on the one hand and shaft 3 on the other hand happens in reverse order, that is, the coupling pin 7 is completely out of the bore 15 back into the bore 14 to proceed. Once the coupling pin 7 has left the hole 15, the shaft 3 and the locking lug 5 are again without rotation, that is no longer arranged rotationally relative to each other.

Fig. 2 shows an embodiment of the invention. In contrast to the previously described embodiment of Fig. 1 shows the embodiment according to Fig. 2 a second, that is a further shaft 17. This is rotationally connected to the locking lug 5 and allows regardless of the position of the coupling pin 7 in each case a rotational movement of the locking lug 5. This further shaft 17 is preferably formed on the inside of a door door, so that it is always possible to operate from the inside of the door, the locking lug 5 and thus the lock 1.

The shaft 3 is in the illustrated embodiment according to Fig. 2 preferably formed on the outside of the door, wherein an actuation of the locking lug 5 by means of the shaft. 3 only possible if switched in the manner already described, the clutch 6, that is, the coupling pin 7 is moved accordingly.

The shaft 3 is formed in the embodiment shown for the purpose of simplified assembly of two sections 20 and 21, wherein it is of course also possible to form the two sections 20 and 21 in one piece. To protect the lock 1, a plurality of drilling washers 19 can be provided with a view of the outside door shaft 3.

Also for reasons of improved manipulation security are all components for operating the coupling pin 7 within the door inside, that is the further shaft 17th

The further shaft 17 has to receive in particular the worm wheel 9 and the spring 10 via a cavity 22. In this case, the spring 10 is disposed within this cavity 22 about a pivot point 13 pivotally. In a twisting movement of the worm wheel 9, a rotational movement of the spring 10 about the fulcrum 13 occurs in the previously described manner, which causes the second section 12 of the spring 10 to move in the radial direction 16, which then also causes the coupling pin to move in the radial direction 16 leads.

The electric motor 8 is covered by means of an engine cover 27. This is accessible from the outside, so that a repair may be possible from the outside, that is without major disassembly or assembly work.

The embodiment shown according to Fig. 2 shows a shaft 17 which partially receives the first shaft 3. In order to enable a method of the coupling pin 7 carried by the first shaft 3 in the intended manner, a through hole 23 of the type shown is provided.

Fig. 3 shows a further embodiment of the invention, which is essentially after those Fig. 2 equivalent.

In contrast to the embodiment according to Fig. 2 has the embodiment according to Fig. 3 via an emergency lock 18. This emergency lock 18 essentially has a housing 28, a roller 29, a connecting rod 30 and a ball 31. In the final assembled state, the roller 29 is disposed within the housing 28 and allowed via the connecting rod 30 a movement of the ball 31. The arrangement of the housing 28 on the lock cylinder 2 is a corresponding receptacle 34. The roller 29 of the emergency lock 18 can be actuated by means of a corresponding key , As a result of a rotational movement of the roller 29, there is a pivoting movement of the connecting rod 30, which in turn brings the thus operatively connected ball 31 into engagement between the two lugs 32 and 33 of the shaft 3 and the further shaft 17. As soon as the ball 31 is in engagement with the two lugs 32 and 33, a force-transmitting connection between these two shafts is formed so that an actuation of the locking lug 5 is also possible via the shaft 3, since the locking lug 5 is rotationally fixed to the shaft 17 communicates. When not activated emergency lock 18, so if the ball 31 is not engaged with the two lugs 32 and 33, these two lugs 32 and 33 can move past each other, so that no force-transmitting connection between the shafts 3 and 17.

The use, that is the use of an emergency lock 18 is purely optional. If an emergency lock 18 is not provided, then a blind housing or a blind cover can be inserted on the receptacle 34, as a result of which the receptacle 34 is closed. This embodiment has the advantage that an emergency lock 18 can also be retrofitted if necessary.

As the representation after Fig. 3 can be seen, the shafts 3 and 17 are rotatably mounted in the lock cylinder 2 with the interposition of rubber O-rings 24.

In addition, lets Fig. 3 Recognize a locking device having a locking body 25 in the form of a ball and a cooperating compression spring 26. This locking device ensures that the two shafts 3 and 17 are rotatably locked together in a position in which the bores 14 and 15 for the coupling pin in the radial direction 16 are aligned with each other. Such a locking device can of course also in the embodiments of the FIGS. 1 and 2 be provided.

The above explanations of a lock cylinder 2 according to the FIGS. 1 to 3 apply at least mutatis mutandis, if not even constructively identical for the following description of the embodiments according to the Fig. 4 to 11 , so that it should be noted with respect to the use of the reference numerals that identical reference numerals are also used for identical construction elements.

The in Fig. 4 illustrated lock cylinder 2 has a housing 37 which has a bore 38. The bore 38 is penetrated by the first shaft 3 and the second shaft 17, wherein the locking lug 5 is rotatably connected to the second shaft 17 and extending in the radial direction to the shaft 17 from an opening 39 of the housing 37.

The locking lug 5 has a first bore 40, in which a cross-sectionally U-shaped coupling member 41 is arranged radially to the shaft 17 movable. The coupling member 41 is formed as a hollow cylinder, wherein the coupling member 41 has a receptacle for a spring 42 and is closed at its shaft 17 facing the end. The spring 42 is supported on a closure element 43, which is inserted into the bore 40 of the locking lug 5 and connected to the locking lug 5. For example, the closure member 43 may be formed as a kind of grub screw which is screwed into the bore 40 with an internal thread.

Within the bore 14 in the shaft 17, a sliding member 44 is arranged, which via the spring 10 and thus via the worm wheel 9 and the electric motor 8 in the radial direction of the shaft 17 is movable.

The Fig. 4 and 5 show the sliding member 44 in a first position in which the two shafts 3 and 17 are not coupled together, whereas the Fig. 6 and 7 the sliding member 44 in a second, namely coupled position of the shafts 3 and 17 show.

The sliding member 44 has a closing nose 5 towards the surface which is convex and has a radius of curvature which coincides with the inner radius of a locking lug which engages through the bore 3 for receiving the shaft.

As in particular from the Fig. 5 and 7 can be seen, the sliding member 44 is formed shorter than the radially extending through the shaft 17 bore 14th

The bore 14 is formed at its one end with a reduced diameter, so that a contact shoulder 45 is formed, which serves the installation of the sliding member 44 in the coupled state. This is in Fig. 7 to recognize.

The Fig. 4 and 5 show the decoupled state, that is, the coupling member 41 rests on the convex surface of the sliding member 44, in such a way that the shaft 3 is rotatable relative to the shaft 17, wherein the shaft 17 is formed integrally with the locking lug 5.

After entering an appropriate authorization code, the energy flow to the electric motor 8 is started via a control device, not shown, so that it starts in the predetermined direction of rotation. About the spring 10, which engages with one end in the worm wheel 9, the sliding member 44 from the in Fig. 5 position shown in the in Fig. 7 shown position in which the sliding member 44 abuts the abutment shoulder 45 in the bore 14. About the tensioned compression spring 42, the coupling member 41 is simultaneously displaced into the bore 14, so that the shaft 17 is connected to the locking lug 5 with the coaxial shaft arranged in the shaft 17 3 form-fitting manner.

It should be noted here that the second portion 12 of the spring 10 builds up a spring force which is greater than the spring force of the compression spring 42, so that the second portion 12 of the spring 10 in the uncoupled state, the spring force of the compression spring 42 at least compensated.

In the Fig. 5 and 7 a position is shown in which the coupling member 41 is aligned axially aligned with the bore 14. Since this position is not always taken during operation of a lock cylinder 2 according to the invention, there is the possibility that the activation of the sliding member 44 takes place at a time in which the shaft 17 is rotated relative to the shaft 3 such that the coupling member 41 on the outer surface of the shell Shaft 3 rests and can not be moved into the bore 14. In this case, a rotation of the shaft 3 is required relative to the shaft 17 to a position in which the coupling member 41 is aligned coaxially with the bore 14.

In order to noticeably indicate this position to the user, a display device comprising the detent body 25, the spring 26 and a detent opening in the shaft 17 is provided intended. Through these components, an acoustic and tactile perceptibility required for the coupling position of the shafts 3 and 17 can be displayed.

The 8 to 11 show an alternative embodiment of a lock cylinder 2. Its construction corresponds substantially to the construction of the lock cylinder 2 according to the Fig. 4 to 7 , as in the embodiment according to the 8 to 11 a coupling between the shafts 3 and 17 is provided by an element arranged in the locking lug 5 in combination with a further element in the bore 14 in the second shaft 17.

Like from the Fig. 8 and 10 can be seen, the bore 40 extends in the embodiment according to the 8 to 11 deviating from the radial direction of the shaft 17. The bore 40 is aligned at an angle of 45 ° relative to the direction of the axis of rotation of the shafts 3 and 17 in the locking lug 5. In the unilaterally closed bore 40, the spring 42 and a rolling element 46 is arranged in the form of a sphere. The diameter of the rolling element 46 substantially corresponds to the diameter of the bore 40.

The bore 40 is open to the bore 14, so that the rolling element 46 can be moved via the spring 42 into the bore 14. In the uncoupled state, the locking element 46 thus runs in the substantial area of the lateral surface of the shaft 17 on this lateral surface and falls upon reaching the bore 14 of the spring 42 displaced in this bore 14. The rolling element 46 penetrates but only so far in the uncoupled state the bore 14 a that upon further rotation of the shaft 3, the rolling element 46 on the outer surface of the shaft 3, in particular expanding in this area bore 14, can be pushed out of the bore 14, so that the rolling element below again on the outer surface of the Wave 3 expires.

In the bore 14, the coupling member 14 is slidably disposed relative to the shaft 3, wherein the bore 14 is aligned in the radial direction of the shaft 3.

How out Fig. 9 can be seen, the bore 14 in the embodiment according to the 8 to 11 corresponding to the bore 14 in the embodiment according to the Fig. 4 to 7 formed so that the bore 14 of the embodiment according to the Fig. 8 until 11 a contact shoulder 45, on which the coupling member 41 comes into abutment in the decoupled position. It should be noted that unlike the design according to the Fig. 4 to 7 Here, the coupling member 41 in the bore 14 and in the embodiment according to the Fig. 4 to 7 in the bore 40 of the locking lug 5 is guided.

The coupling member 41 according to the embodiment of the 8 to 11 has an end facing the rolling element 46 in the form of a profiled end face 47. The end face 47 is subdivided into a receptacle 48 modeled after the outer circumference of the rolling element 46 and a projection 49. It can also be seen that the bore 14 in the shaft 3 is formed with an extension 50 at its end facing the outer circumferential surface of the shaft 3, which as well as the receptacle 48 is essentially the outer contour of the rolling element 46 is partially replicated.

The projection 49 prevents the rolling element 46 in uncoupled, in Fig. 9 shown state penetrates too far into the bore 14 and leads to a locking between the shaft 3 and the further shaft 17.

In the Fig. 10 and 11 In contrast, the coupled state is shown schematically. It can be seen that the coupling member 41 is moved in the direction of the locking lug 5 of the further shaft 17, so that the surface of the receptacle 48 together with the surface of the extension 50 as a whole forms a receptacle for the rolling element 46. The projection 49 engages in the in Fig. 11 shown coupled state slightly into the bore 40 and prevents the rolling element 46 is displaced in a rotational movement of the shaft 3 in the bore 40 against the compression spring 42. Thus, in the decoupled state via the shaft 3, the rolling element 46 and the coupling member 41, a positive connection with the further shaft 17 are produced.

LIST OF REFERENCE NUMBERS

1

lock

2

lock cylinder

3

wave

4

axis of rotation

5

Cam

6

clutch

7

coupling pin

8th

electric motor

9

worm

10

feather

11

first section

12

second part

13

pivot point

14

drilling

15

drilling

16

radial direction

17

another wave

18

Emergency lock

19

drill protection

20

first section

21

second part

22

cavity

23

Through Hole

24

O-ring

25

latching body

26

feather

27

engine cover

28

casing

29

roller

30

pleuel

31

Bullet

32

nose

33

nose

34

admission

35

coupling part

36

coupling part

37

casing

38

drilling

39

opening

40

drilling

41

coupling member

42

feather

43

closure element

44

pusher member

45

contact shoulder

46

rolling element

47

end face

48

admission

49

head Start

50

extension

Claims (14)

Lock cylinder for a lock, with a first shaft (3), the end carries a handle, preferably a knob or a pawl, and about a by the shaft (3) defined axis of rotation (4) rotatably arranged locking lug (5), with the shaft (3) cooperates, and with a coupling (6), by means of which after recognition of an authorization code, the operative connection between the shaft (3) and the locking lug (5) is switchable, wherein the operative connection with switched clutch (6) rotationally and otherwise is rotatable and wherein the locking lug (5) rotationally fixed to another shaft (17) is connected, the end carries a handle. Locking cylinder for a lock, with a first shaft (3, 17), the end carries a handle, preferably a knob or a pawl, and one about a by the shaft (3,17) defined axis of rotation (4) rotatably arranged locking lug (5 ), which cooperates with the shaft (3, 17), and with a coupling (6), by means of which after detection of an authorization code, the operative connection between the shaft (3, 17) and the locking lug (5) is switchable, wherein the operative connection at switched clutch (6) is rotationally fixed and otherwise without rotation, characterized in that the coupling (6) has a spring-loaded coupling member (41) arranged in a bore (40) of the locking lug (5) and in the coupling process partially in a bore (14 ) of the shaft (3) can be transferred. Locking cylinder for a lock, with a first shaft (3, 17), the end carries a handle, preferably a knob or a pawl, and about a by the shaft (3, 17) defined axis of rotation (4) rotatably arranged closing lug (5 ), which cooperates with the shaft (3, 17), and with a coupling (6), by means of which after detection of an authorization code, the operative connection between the shaft (3) and the locking lug (5) is switchable, wherein the operative connection with switched clutch (6) is rotationally fixed and otherwise rotatable, characterized in that the coupling (6) at least one over the outer surface of the shaft (3, 17) in the circumferential direction rolling rolling element (46) and at least one with the rolling element (16) coupling cooperating coupling member ( 41), which in the radial direction of the shaft (3, 17) slidably disposed in a hole (14) of the shaft (3) open to the closing nose (5). Lock cylinder according to one of claims 1 to 3, characterized in that the coupling (6) has a radially to the shaft (3) movable coupling pin (7) or that the coupling member as radially to the shaft (3) movable coupling pin (7) is formed , Lock cylinder according to claim 3, characterized in that the coupling pin (7) by means of an electric motor (8) is driven on the output side, a worm wheel (9) with a guided therein spring (10), wherein the spring (10) having a first portion (11) is articulated on the worm wheel (9) and with a second portion (12) on the coupling pin (7). Lock cylinder according to claim 4 or 5, characterized in that the coupling pin (7) has a bore into which engages in the final assembled state of the second portion (11) of the spring (10). Lock cylinder according to claim 4 or 5, characterized in that the shaft (3) has a bore (14) which fully receives the coupling pin (7) when the clutch (6) is not engaged. Lock cylinder according to claim 4, 5 or 6, characterized in that the closing lug (5) has a bore (15) into which the coupling pin (7) engages partially with an active portion when the coupling (6) is switched on. Lock cylinder according to claim 8, characterized in that the coupling pin (7) has an end portion opposite the operative portion, which is provided with an additional weight. Lock cylinder according to claim 6 and 7, characterized in that the shaft (3) and the locking lug (5) can be latched in a position to each other by means of a latching device according to the bore (14) in the shaft (3) and the bore (15 ) in the closing lug (5) in the radial direction (16) of the shaft (3) are arranged in alignment one behind the other. Lock cylinder according to claim 9, characterized in that the shaft (3) is a shaft for the outside of the door and the other shaft (17) is a shaft for the inside of the door. Lock cylinder according to one of the preceding claims, characterized by a key-operated emergency lock (18). Lock cylinder according to claim 3, characterized in that the rolling element (46) is designed as a ball and that the coupling member (41) facing the rolling element (46) and for receiving the rolling element (46) profiled formed end face (47). Lock cylinder according to claim 3, characterized in that the rolling element (46) in a bore (40) within the locking lug (5) is guided, wherein the bore (40) deviating from the radial direction of the shaft (3, 17) is aligned.

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