EP0995864B1 - Electro-mechanical lock system - Google Patents

Abstract

The system has a closure element (12) rotatably mounted in a cylinder element (10), esp. a replacement part for a standard format cylinder, for actuating a lock. A coupling assembly (14) rotatably mounted in the cylinder element can be moved from an idle state into a drive state for rotational coupling with the closure element. A key (16) can be rotationally coupled via the coupling assembly to the closure element and an electromechanical control unit (20) adjusts the coupling assembly. The control unit is mounted on one side of the closure element, so that the door's inner side and coupling assembly can be actuated from the other side of the closure element with a key. The key carries a communications unit for exchanging data with the control unit. An electric circuit made to actuate the coupling assembly contains a connection between the communications unit and the control unit. Independent claims are also included for a key, a coupling unit, a sliding element and a switching unit for a closure system.

Description

The invention relates to an electromechanical locking system for doors according to the preamble of claim 1.

For example, in hotels there is a need for electromechanical locking systems in which a key code-specific code is transmitted to the lock with a key. In the case of a suitable key, the lock switches to a state which allows actuation of the lock mechanism to open the door.

Such locking systems can be designed so that they - for example, after loss of a key - can be reprogrammed without great effort to prevent access by unauthorized persons. Unauthorized copying of electronic keys is also virtually impossible.

From DE 196 03 320 A1 an electronically programmable locking system with a lock and a matching key is known, in which all electronic components of the lock are integrated into a lock cylinder. The key carries a transponder chip and can be inserted into an inner cylinder assigned to the outside of the door. On the inside of the door associated side of a locking element, via which the lock mechanism can be acted upon, an electronic module and a motor are housed in the lock cylinder. The engine actuates one located between the inner cylinder and the engine mechanical coupling assembly for non-rotatably connecting the key to the blocking element when a code transmitted from the transponder chip to the electronic assembly is accepted. The communication between the key and the lock cylinder via two induction coils, one of which is guided along the outer circumference of the key handle and the other is arranged on the key facing the front side of the lock cylinder. About an operable by insertion of the key in the inner cylinder button, which is arranged in the region of the induction coil, the electronic assembly is activated on the other side of the blocking element. The lines through which the button is connected to a battery arranged in the region of the motor and the induction coil to the electronic module, are passed to bypass the mechanical coupling group through a running on the lower longitudinal side of the lock cylinder shaft.

From EP 0 401 647 A1 a closing device equipped with electronic locking components is known in which the key comprises a code transmitter and the lock unit formed by lock and lock cylinder comprises a code analyzer with an unlocking device. The power source is in the key and the Code Evaluator is arranged with the unlocking in the lock cylinder. By inserting the key, a center contact formed at the end of the key shank is brought into contact with a spring. The spring is connected with its distal end stationary to an electromagnet. Furthermore, the spring is supported in its central region against a bolt. Once the center contact of the key shank contacts the spring, the circuit is closed by the spring and - if the codes match - the solenoid is activated, whereupon a case is tightened, so that displaced by subsequent compression of the spring of the bolt and in this way the locking of Castle can be lifted. To close the circuit, it is not necessary to move components or compress the spring.

It is the problem underlying the invention (task) to provide a locking system for doors, which is easy to operate in a compact design and is versatile.

The solution of this object is achieved by the features of claim 1.

According to the invention, the coupling assembly not only serves for the mechanical non-rotatable coupling of the key with the closing element, but is also part of an electrical circuit, which is closed by operating the coupling assembly by means of the key, wherein the coupling assembly has a sliding by means of the key sliding member, which is used to produce the is shifted electrically conductive connection.

By the electrically conductive connection thus produced, the communication unit carried by the key is directly connected to the control unit. The key-facing end face of the cylinder member can be provided due to the direct connection between the control unit and the key with fittings of any strength and material properties that can make it impossible to transmit electromagnetic waves between induction coils.

Furthermore, an energy source, for example in the form of a battery, which supplies the control unit when the coupling assembly is actuated by means of the key can be arranged in the circuit. By inserting the key into the cylinder member then the control unit is turned on and at the same time the exchange of example one Access code containing information between the control unit and the key allows.

On the provision of a separate communication device, eg. As an induction coil, and a switching device, for example in the form of a button in the key side end of the cylinder member and cable ducts for from one end of the cylinder member to the other leading connecting lines can be omitted according to the invention.

According to a preferred embodiment of the invention, the coupling assembly, in particular a sliding member of the coupling assembly, by the key operation in the direction of a driving position biased.

In this way it can be ensured that the coupling assembly - after actuation by means of the key and subsequent activation of the control unit by closing the circuit - automatically jumps into a Mitnahmezustand corresponding driving position, without the need for additional movement of the key is required.

According to a further preferred embodiment of the invention, the communication unit comprises a key-specific communication element which is integrated in a designed as a transponder unit electronic assembly of the key, and a electronic assembly of the control unit associated lock-specific communication element, wherein the communication organs for communication with each other are formed by electromagnetic waves and preferably each comprise at least one induction coil.

The key thus carries the essential for an exchange of information components of the locking system, which in particular when, according to a further preferred embodiment of the invention, the control unit is housed in a housing of a knob, only the coupling assembly is to be accommodated in the cylinder member.

According to a further preferred embodiment of the invention, a transponder unit of the key extends at least partially through the induction coil of the control unit, wherein preferably the induction coil is wound directly onto the transponder unit.

In this way, a compact communication unit can be realized on the key, which requires comparatively little energy for the secure transmission of the signals containing the desired information due to the small distance between the induction coil of the control unit and an induction coil of the transponder unit.

According to a further preferred embodiment of the invention, the cylinder member is designed as a cylinder adapter which can be used with the lock instead of a lock cylinder, in particular a standardized profile cylinder.

As a result, a simple, inexpensive and feasible without great effort retrofitting existing doors is possible, which in particular in the hotel area or other building complexes provided with locking systems is advantageous.

The rotationally fixed connection of a rotary knob in which, according to the already mentioned preferred embodiment of the invention, the control unit is housed, with the closing element makes it possible to lock the door from the inside at any time and unlock. Alternatively, the rotary knob can be decoupled from the closing element to allow the use of the locking system according to the invention - while maintaining the space available in a rotary knob - in conjunction with panic locks in which the lock mechanism can be opened at any time from the inside by a door handle to open the door can be acted upon and the door must not be locked by means of a door inside the associated knob.

According to a further preferred embodiment of the invention, a switching unit of the coupling assembly, which is adjustable for the adjustment of the coupling assembly from the freewheeling state in the driving state by a motor of the control unit, as a centrifugal unit is formed, which can be displaced by a motor of the control unit in rotation disc and on the a slide of the sliding member facing the pulley comprises at least one centrifugal element, wherein in the rotating disk in the freewheeling condition by the centrifugal force obstructed path for a direction of the switching unit projecting spine of the slider is released to the control unit.

By such a centrifugal force unit is a simple, few items requiring and compact structure having and yet Reliably working arrangement for adjusting the coupling assembly created.

Further preferred embodiments of the invention, in particular advantageous embodiments of the key, the coupling assembly, the sliding member and the switching unit are specified in the subclaims, the description and the drawing.

Fig. 1

eine geschnittene Seitenansicht eines Schließsystems gemäß einer Ausführungsform der Erfindung,

Fig. 2

einen vergrößerten Ausschnitt von Fig. 1, und

Fig. 3a und 3b

eine als Fliehkrafteinheit ausgebildete Schalteinheit eines erfindungsgemäßen Schließsystems in zwei unterschiedlichen Betriebszuständen.

The invention will now be described by way of example with reference to the drawings. Show it:

Fig. 1

a sectional side view of a locking system according to an embodiment of the invention,

Fig. 2

an enlarged detail of Fig. 1, and

Fig. 3a and 3b

a switching unit designed as a centrifugal force unit of a locking system according to the invention in two different operating states.

The locking system according to FIG. 1 comprises a cylinder member 10, which is designed as a cylinder adapter, ie as a replacement piece for a standardized profile cylinder and thus can be used with conventional mortise locks for doors. In the cylinder member 10, a closure member 12 is rotatably mounted about a rotation axis 98 which has a cam 72 for applying a locking mechanism of the castle. Furthermore, it is the cylinder member 10 is provided with a bore 74 for a forend screw for rotationally fixed fixing of the cylinder member 10 in the lock.

The cylinder member 10 is constructed approximately symmetrically, d. H. the closing element 12 is arranged in a recess 17 between two approximately the same axial length having portions of the cylinder member 10. The cylinder member 10 may be executed as a function of the particular circumstances, in particular the dimensions of the door panel, but also asymmetrically. For example, the portion of the cylinder member 10 assigned to a door outer side can be shortened relative to the other portion.

The locking system further comprises a key 16, the key body 60 comprises a handle portion 78 and a shaft portion 84. The grip part 78, which carries a communication unit 18 explained in more detail elsewhere, is provided with an encapsulation 80 made of plastic surrounding the grip part 78 and the communication unit 18. In the encapsulation 80, a recess 82 is provided, the z. B. allows attachment of the key 16 to a key fob.

By stop shoulders 79 of the key body 60, the maximum penetration depth of the shaft portion 84 is fixed in the cylinder member 10.

The communication unit 18 comprises a transponder unit 52 and an induction coil 54 wound on the transponder unit 52, one end of which is soldered to the grip part 78 of the key body 60 and the other end to a printed circuit board 56. The circuit board 56 is glued into a channel-like recess of the key body 60, which over the from Handle part 78 pioneering front end of the shaft portion 84 protrudes and forms a contact tip 58. The transponder unit 52 is received by the rear, fork-shaped end of the circuit board 56 and fixedly connected to the circuit board 56 and the key body 60 by pouring into an electrically insulating material (not shown). Between the key body 60 and the circuit board 56, a mica plate 62 is glued, which extends along the channel-like recess of the key body 60 and the circuit board 56 with respect to the key body 60 electrically isolated. Openings 76 allow an intimate positive connection between the shaft portion 84 of the key body 60 and an electrically insulating material (not shown), with which the channel-like recess can be poured to protect the circuit board 56 from external influences.

In the preferably associated with a door inside portion of the cylinder member 10, a hollow shaft portion 66 of a knob 68 is inserted, which comprises an integrally connected to the hollow shaft portion 66 housing 50 and a cap 70 made of metal or plastic. The cap 70 is screwed or latched to the housing 50. By means of spring-loaded, in transverse bores 11 of the cylinder member 10 seated pins (not shown) which engage in annular recesses 67 of the hollow shaft portion 66, the knob 68 against the cylinder member 10 is rotatable, but held axially immovable in the cylinder member 10. For this purpose, a single pen is sufficient.

About two spacers 48 a, 48 b of the knob 68 is rotatably coupled to the closing element 12. The coupling of these components with each other via end-side extensions and complementary end-side Recesses or incisions, each allowing a positive connection between two axially adjacent components. For example, each component may be provided with two diametrically opposed extensions or recesses or cuts.

In order to adapt to different door leaf dimensions that require different cylinder organs, basically any number of spacers between the hollow shaft portion 66 of the knob 68 and the closing element 12 can be arranged. Also, a direct rotationally fixed coupling between the hollow shaft portion 66 and the closing element 12 without spacers is possible in principle, in which case, however, explained in more detail elsewhere recess 46 which is formed in the spacer 48 a, should be provided in the hollow shaft portion 66.

In order to enable the use of the locking system with panic locks, can be provided for a decoupling between the knob 68 and the closing element 12, for example by omitting the frontal extensions or recesses or cuts on the hollow shaft portion 66 or one of the spacers 48a, 48b, so that the knob 68 in the cylinder member 10 is freely rotatable.

In the knob 68 is a control unit, not shown, and represented only by the reference numeral 20, whose purpose will be described elsewhere.

The locking system further comprises a rotatably mounted in the cylinder member 10, multi-part coupling assembly 14, which in Fig. 1 by the with dashed line drawn box is marked and will be explained below with reference to FIG. 2.

The coupling assembly 14 comprises a multi-part outer sleeve which is formed by axially successively arranged, at least approximately sleeve-shaped and non-rotatably interconnected elements, namely by an inner cylinder 64, a connecting piece 94 and a receiving piece 96 of a sliding member 24. The rotationally fixed coupling of two axially adjacent elements takes place - as described above in connection with the closing element 12, the spacers 48a, 48b and the hollow shaft portion 66 - by the engagement between the end projections and recesses or cuts of the elements.

The inner cylinder 64 has a keyway 65 for the key 16 and is provided at its periphery with an annular recess 63 in the region of its end facing the closing element 12. In the annular recess 63 engages an unillustrated, spring-loaded pin which sits in one of four key-side transverse bores 13 of the cylinder member 10, and on the one hand holds the inner cylinder 64 in the cylinder member 10 axially immovable and on the other in the manner of a sliding contact regardless of the angular position the inner cylinder 64 ensures good electrical contact between the inner cylinder 64 and the cylinder member 10.

The other three transverse bores 13 of the cylinder member 10 serve to receive pin springs, together with seated in holes 15 of the inner cylinder 64 inner pins and between the pin springs and The inner pins arranged outer pins represent a coding that cooperates with the manner of a Stiftzuhaltung conventional lock cylinder formed in the shaft portion 84 of the key 16 incisions 85. This ensures that the inner cylinder 64 can only be rotated in the cylinder member 10 when the key 16, which is fully inserted and designed in accordance with the coding, is rotated. Furthermore, this ensures that the key 16 can be removed only in a single angular position of the inner cylinder 64, in which the holes 15 are aligned with the transverse bores 13 and in which preferably the cam 72 of the closing element 12 near its deepest, aligned with the transverse bores 11, 13 provided portion of the cylinder member 10 is located angular position.

The hollow shaft portion 50 of the knob housing 50 may be modified to be provided with recesses or cuts corresponding to the bores 15 and slots 85 of the inner cylinder 64 and the key shaft portion 84, respectively, which cooperate with spring-loaded pins extending in the remaining ones , not for axially holding the knob housing 50 in the cylinder member 10 serving rotary knob side transverse bores 11 of the cylinder member 10 sit. By such, similar to a Stiftzuhaltung trained arrangement can be ensured that the hollow shaft portion 50 engages in a certain angular position, which is tuned to the angular position of the inner cylinder 64 for removing the key 16 such that the coupling assembly 14 from the driving position to the freewheeling position can be adjusted without the risk of jamming of components. This will be discussed later.

The key-side and rotary knob-side transverse bores 11, 13 are - if they are needed - closed by grub screws, not shown, on which the respective pins in the direction of the axis of rotation 98 biasing springs (not shown) are supported.

In addition, the locking system comprises within the above-mentioned outer sleeve axially displaceable elements, namely a substantially disc-shaped contact portion 26 and a likewise substantially disc-shaped slide 28, which together with the receiving piece 96 and further, in connection with Fig. 2 explained components form the sliding member 24 , To adapt to different axial lengths having cylinder members 10 key side in the outer sleeve, a corresponding number of separate, in principle corresponding to the contact portion 26 formed spacers are arranged.

Furthermore, between a rotary knob 68 facing end side of the receiving piece 96 and the control unit 20 in the hollow shaft portion 66, a cylindrical switching unit 22 is arranged substantially axially immovable, which is designed as a centrifugal force unit and their structure and operation in more detail with reference to FIG. 2, Fig. 3a and 3b will be explained.

The sliding member 24 comprises a relative to the receiving piece 96 in the axial direction displaceable arrangement consisting of the contact portion 26 and the slider 28, which are interconnected by the coupling spring 30. The slider 28 includes an inner contact piece 32, which by Isolierstücke 27 against an outer driver 42nd is electrically isolated. Rotary knob side, the contact piece 32 is provided with a in the direction of the switching unit 22 projecting mandrel 40.

The contact portion 26 also has an inner contact piece 32 which is mated with a knob side 29 arranged spring receptacle. The contact piece 32 and the spring receptacle 29 are electrically insulated by insulating pieces 25 with respect to an outer sleeve 31.

While the slider 28 is guided over its driver 42 in the receiving piece 96, the contact portion 26 is located outside of the receiving piece 96 and is - in composite coupling assembly 14 - guided over its outer sleeve 31 in the connector 94.

The coupling spring 30 is placed on facing, cylindrical projections of the contact piece 32 of the slider 28 and the spring seat 29 of the contact portion 26. A return spring 34 is supported at its one end in an annular groove between the rotary knob-side insulating piece 27 of the contact portion 26 and at its other end to an annular projection which is formed on the inner wall of the receiving piece 96.

In a freewheeling state or a freewheeling position of the sliding member 24 according to FIG. 1 and FIG. 2, which corresponds to the freewheeling state of the coupling assembly 14, sits a radial extension 43 of the driver 42 in an axial cut, whose width that of the radial extension 43rd corresponds, formed recess 44 of the receiving piece 96, wherein the driver 42 on a knob side Stop of the receiving piece 96 is present. In this position, the mandrel 40 of the slider 28 protrudes only a little way into an opening 91 which is formed in a cylindrical cap 90 of the switching unit 22 facing the rotary knob side end side of the receiving piece 96.

In the non-rotatably connected via the spacer 48b with the closing element 12, the knob 68 nearest to the spacer 48a, on which the receiving piece 96 is present, is also an axial recess whose width corresponds to that of the radial extension 43 of the driver 42, formed recess 46 provided. The two recesses 44, 46 together form - at a certain relative angular position between the non-rotatably connected to the coupling assembly 14 key 16 and the non-rotatably connected to the closing element 12 knob 68 - together in the axial direction erstrekkenden slot. The two recesses 44, 46 can - if the receiving piece 96 and the spacer 48 a formed accordingly and z. B. are inserted into each other - overlap in the axial direction.

When the path for the mandrel 40 is released into the switching unit 22, which will be discussed in more detail below, the mandrel 40 and the radial extension 43 in Fig. 1 and Fig. 2 can move to the left, if the above-mentioned certain relative Angular position is present. The sliding member 24 is then in a driving state or a driving position corresponding to the driving state of the coupling assembly 14, in which the radial extension 43 of the driver 42 sits simultaneously in the recess 44 of the receiving piece 96 and in the recess 46 of the spacer 48 a , A rotation of the key 16 thus causes in this position a entrainment of the driver 42 via the receiving piece 96 and a driving of the spacer 48a on the radial extension 43 of the driver 42. In this way, a rotationally fixed coupling of the key 16 via the coupling assembly 14 with the closing element 12, which allows the lock mechanism by means of the key 16 to act on the cam 72 of the closing element 12.

The printed circuit board 56, the contact piece 32 and the spring receptacle 29 of the contact portion 26, the coupling spring 30, the contact piece 32 of the slider 28 and the mandrel 40 of the contact piece 32 are made of stainless steel.

The partially illustrated in Fig. 3a and 3b switching unit 22 of the coupling assembly 14 is formed as a centrifugal unit and comprises a disc 36, on which the sliding member 24 facing side opposite the disc 36 about axes defined by bearing pins 92 pivotable centrifugal elements 38 are arranged, of which in Fig. 1 and Fig. 2 only one is shown. The centrifugal elements 38 are castings.

The already mentioned above cap 90 forms a rotary knob side open housing for the disc 36 and the centrifugal elements 38. In addition to the also mentioned above opening 91 are in the sliding member 24 facing side of the cap 90 two diametrically opposed, each provided with an internal thread holes formed, which are not visible in the figures.

In the disc 36, a channel 88 is provided for the output shaft of an electric motor, not shown, of the control knob 20 housed in the knob 68. The central axes of the channel 88 and the opening 91 in the cap 90 coincide with the axis of rotation 98. By means of a grub screw 86 which is screwed through a recess in the cap 90 and a bore in the disc 36 perpendicular to the axis of rotation 98 in the switching unit 22, the motor shaft can be fixed and thus rotatably connected to the disc 36.

Between the cap 90 and the inner wall 69 of the hollow shaft portion 66 and between the mutually facing portions of the end faces of the cap 90 and the receiving piece 96 is a represented in Fig. 2 by the reference numeral 93 space provided by the switching unit 22 relative to the hollow shaft portion 66 and the receiving piece 96 is electrically isolated. In Fig. 1 and Fig. 2 to the left of the switching unit 22 is on the inner wall 69 of the hollow shaft portion 66 of the housing 50, not shown, sleeve-shaped insulating piece is provided, which electrically isolates the motor housing relative to the hollow shaft portion 66.

3a and 3b each show a key-side view of the switching unit 22 with the cap 90 removed, wherein FIG. 3a corresponds to a freewheeling state and FIG. 3b corresponds to a driving state of the coupling assembly 14.

The centrifugal elements 38 each have a semi-circular cross section with a radius slightly smaller than that of the disc 36 is. The bearing pins 92 each extend through a corner region of the centrifugal force elements 38 and stuck in formed in the disc 36 blind holes. As is apparent from Fig. 3a, the centrifugal elements 38 are arranged such that their straight sides lie in the same, the plane passing through the channel 88 of the disc 36 axis of rotation 98 level. The centrifugal elements 38 are displaced relative to each other so that they complete each with the closer to its bearing pin 92 corner region with the edge of the disc 36 and form a locking disc.

The centrifugal elements 38 are respectively biased by a two-armed, serving as a return spring 39 coil spring in their freewheeling state corresponding freewheeling position shown in FIG. 3a, wherein the bearing pins 92 each extend through the winding or turns of the return springs 39. The return springs 39 are each with one arm completely and the other, at the free end arcuate expiring arm partially in a plane parallel to the disk plane 36 incision of the centrifugal force element 38. Here, the straight expiring arm of the return springs 39 is based in each case in the region of its free end the in Fig. 3a and Fig. 3b partially schematically indicated by a dash-dotted line boundary wall of the incision. The other arm of the return springs 39 is supported on a wall 36 surrounding the disc 36 and the centrifugal elements 38, indicated by a dashed circle.

In the locking system according to FIGS. 1 and 2, the wall on which the return springs 39 (not illustrated in FIGS. 1 and 2) are supported, formed by the inner wall of the cap 90, wherein the free inner diameter of the cap 90 corresponds to the diameter of the disc 36.

However, in order to clarify the principle of the switching unit 22 designed as a centrifugal force unit, in FIG. 3 a and FIG. 3 b the dashed circle has a larger diameter than the pane 36. Thus, in Fig. 3b, in which the centrifugal elements 38 are each shown in their driving state corresponding driving position, which they occupy with rotating disk 36, clearly seen that the return springs 39 are compressed. Between the mutually parallel straight sides of the centrifugal elements 38, a gap is shown in FIG. 3b, on the previously closed by the centrifugal elements 38 path into the interior of the switching unit 22 into it, d. H. in the direction of the disc 36 is accessible.

The centrifugal force unit is characterized in that regardless of the free inner diameter of the wall on which the return springs 39 are supported, d. H. regardless of how far the centrifugal elements 38 can be pivoted radially outwardly against the spring force of the return springs 39 when the disk 36 rotates, the straight sides of the centrifugal elements 38 always run parallel to each other, the width of the gap between the straight sides of the free inner Diameter of the support wall is dependent.

In the following the operation of the locking system according to the invention will be described, wherein the electrical or electronic aspects are explained only insofar as it is necessary for the understanding of the invention.

In principle, the electronic assemblies of the control unit 20 and the transponder unit 52 with respect to their structure, their characteristics and in particular the feasible with them exchange of information according to the components described in the German patent application DE 196 03 320 A1 components or assemblies.

In contrast to the arrangement described in DE 196 03 320 A1, the output shaft of the motor of the control unit 20 is non-rotatably connected to the disc 36 of the switching unit 22 and the control unit 22 - and thus the lock - associated and directly wound on the transponder unit 52 induction coil 54 is formed as part of the attached to the key 16 communication unit 18. Due to the immediate vicinity of this induction coil 54 to the transponder unit 52 can be dispensed with a large area enclosing, guided along the outer circumference of the key handle induction coil for the transponder unit 52. Rather, a such an induction coil corresponding; be integrated into the transponder unit 52 for communication with the induction coil 54 by means of electromagnetic waves trained communication element.

By inserting the key 16 into the keyway 65 formed in the inner cylinder 64, on the one hand, an electrical circuit is closed when the contact tip 58 contacts the contact piece 32 of the contact portion 26 and the mandrel 40 via the coupling spring 30 through the opening 91 in the cap 90 against the Locking disk is pressed, the is formed by each located in the freewheeling position shown in FIG. 3a centrifugal elements 38.

The circuit includes the induction coil 54, the circuit board 56, the contact piece 32 of the contact portion 26, the spring receptacle 29 of the contact portion, the coupling spring 30, the contact piece 32 of the slider 28, the mandrel 40 and the switching unit 22, the mandrel 40 at the centrifugal elements 38 contacted.

In this state, the coupling assembly 14 is still in its free-running state, but both the coupling spring 30 and the return spring 34 are compressed. The slider 28 is thus biased in the direction of its driving position, in which it can not be adjusted due to the obstructed by the centrifugal elements 38 way into the interior of the switching unit 22 into it.

However, there is an electrically conductive connection between the mandrel 40 and fixed in the channel 88 of the disc 36 output shaft of the electric motor of the control unit 20. The output shaft of the electric motor is connected to the one pole of a likewise housed in the knob 68 voltage source in the form of batteries or rechargeable batteries , Between the other pole of the voltage source and the soldered to the key body 60 end of the induction coil 54 is an electrically conductive connection via the housing 50 of the knob 68 and thus the hollow shaft portion 66, the cylinder member 10, sitting in a transverse bore 13 to form a sliding contact and in the annular recess 63 of the inner cylinder 64 engaging pin, the inner cylinder 64 and the key body 60th

Consequently, at the moment when the mandrel 40 contacts the centrifugal elements 38, the control unit 20 is activated. This starts the procedure for exchanging information, for example access or authorization codes stored in memory elements respectively of the electronic assembly of the control unit 20 and the transponder unit 52, and then checking whether the key 16 is a suitable key for the locking system , If this is not the case, the procedure is aborted and the control unit 20 is turned off, so that the lock can not be operated, since the coupling assembly 14 remains in its free-running state.

However, when the key 16 has a matching code, the control unit 20 causes the electric motor to be turned on, the output shaft of which then causes the disc 36 to rotate. As a result, the centrifugal force elements 38 are each pressed against the inner wall of the cap 90 against the spring force of the return springs 39 radially outwards. The mandrel 40 can thus pass through the gap between the centrifugal elements 38, provided that the recesses 44 and 46 form the above-mentioned slot for the radial extension 43 of the driver 42.

This is the case when the knob 68 in the matched to the coupling assembly 14 angular position or otherwise provided for an alignment of the recesses 44 and 46. Otherwise, by probing rotation of the coupling assembly 14 by means of the key 16, that relative angular position is to be established in which the radial extension 43 snaps into the recess 46, ie the slider 28 can move as a whole to the left in Fig. 1 and Fig. 2.

Now, the driving state of the coupling assembly 14 is made so that by means of the key 16, the closing element 12 can be rotated to act on the lock.

The procedure for checking the key 16, activating the electric motor and adjusting the coupling assembly 14 takes only a fraction of a second e.g. B. in the order of 100 ms to complete. This period of time is virtually unnoticed by the user, i. H. a matching key 16 can be inserted and rotated in one stroke into the inner cylinder 64 to urge the lock to lock or unlock the door. Preferably, a procedure controlling microprocessor of the control unit 20 is in an uncritical in terms of energy consumption standby mode, whereby the startup of the control unit 20 is accelerated after closing the circuit and shortened until the engine is switched off period.

The electronic assembly of the control unit 20 is designed such that the control unit 20 and the electric motor after a certain period of time, which is sufficient for displacing the radial extension 43 of the driver 42 in the recess 46 of the spacer 48 a, are automatically deactivated to the battery or Conserve accumulator unit. The return springs 39 pull the centrifugal elements 38 back toward the free-running position shown in FIG. 3a, but wherein the mandrel 40th prevents the centrifugal elements 38 again completely unite to the locking disc of FIG. 3a.

The coupling assembly 14 thus remains in its driving state even after the automatic shutdown of the control unit 20, so that the closing element 12 can be rotated as long as the key 16 in the inner cylinder 64 and the contact portion 26 is applied, thereby the slider 28 via the coupling spring 30 after on the left in Fig. 1 and Fig. 2 and compresses the return spring 34.

When the key 16 is withdrawn, the return spring 34 presses the contact portion 26 to the right, which drives the slider 28 via the now acting as a tension spring coupling spring 30, whereby the sliding member 24 and thus the coupling assembly 14 get back into their freewheeling state and the centrifugal elements 38 final each can take their freewheeling position shown in FIG. 3a.

When the housing 50 of the knob 68 is made lockable in an angular position with the cylinder member 10, which corresponds to that angular position of the coupling assembly 14, in which a removal of the key 16 is possible, and in which the recess 46 of the spacer 48 a with the recess 44 of the Receiving piece 96 is aligned to form the slot, the radial extension 43 of the driver 42 due to the then defined, relative angular position between the spacer 48a and the receiving piece 96 in the recess 44 of the receiving piece 96 spring back without the risk of jamming.

In order to realize an emergency operation, which allows a certain number of switching operations even after completely emptied battery or accumulator unit of the control unit 20 or a failure of the same, the control unit 20 may be provided with special capacitors, for example, the Golden Caps type. Such capacitors, which can be charged in the shortest possible time, discharge relatively quickly. However, the stored energy is sufficient to perform several Informationsaustausch- and Verstellvorgänge.

For such emergency operation, a key can be designed as a special charging key and z. B. be provided with a 6V battery, with which the capacitors can be charged by inserting the charging key into the inner cylinder 64 and closing the circuit. Following the charging process, the locking system is capable of about ten shifts on the order of about ten shifts with the aid of the energy stored in the capacitors, which is sufficient for bridging the downtime of the battery or accumulator unit.

LIST OF REFERENCE NUMBERS

10

cylinder body

11

cross holes

12

closing element

13

cross holes

14

coupling assembly

15

drilling

16

key

17

recess

18

communication unit

20

control unit

22

switching unit

24

pushing mechanism

25

Insulating

26

Contact section

27

Insulating

28

pusher

29

spring mount

30

coupling spring

31

shell

32

contacts

34

Return spring

36

disc

38

centrifugal elements

39

return springs

40

mandrel

42

takeaway

43

radial extension

44, 46

recesses

48a, 48b

spacers

50

casing

52

transponder unit

54

Communication element, induction coil

56

circuit board

58

contact tip

60

key body

62

mica plate

63

annular recess

64

inner cylinder

65

keyway

66

Hollow shaft section

67

ring recesses

68

knob

69

Inner wall of the hollow shaft section

70

cap

72

Cam

74

drilling

76

breakthroughs

78

handle part

79

stop shoulders

80

encapsulation

82

recess

84

shank part

85

cuts

86

grub screw

88

channel

90

cap

91

opening

92

bearing pin

93

gap

94

joint

96

spigot

98

axis of rotation

Claims (8)

1. Electro-mechanical locking system for doors, comprising:

   a locking element (12) rotatably supported in a cylinder member (10) for a lock, particularly in a replacement part for a standardized profile cylinder, for acting upon the lock;

   a coupling assembly (14) rotatably supported in the cylinder member (10) and adapted to be shifted from a free-running state to a follower state to be non-rotatably coupled to the locking element (12);

   a key (16) adapted to be non-rotatably coupled to the locking element (12) via the coupling assembly (14); and

   an electro-mechanical control unit (20) for shifting the coupling assembly (14); wherein

   the control unit (20) is disposed on one side, in particular that assigned to an inside of a door, of the locking element (12), and the coupling assembly (14) is adapted to be actuated from the other side of the locking element (12) by means of the key (16), and the key (16) bears a communication unit (18) for an exchange of information with the control unit (20);

   
   characterized in that
   by an actuation of the coupling assembly (14), an electric circuit can be closed in which an electrically conducting connection is established between the communication unit (18) and the control unit (20) via the coupling assembly (14);
   wherein the coupling assembly (14) comprises a slide assembly (24) adapted to be shifted by means of the key (16), and a shifting of the slide assembly (24) is necessary to establish the electrically conducting connection that includes the slide assembly (24).
2. Locking system according to claim 1,
   characterized in that
   the control unit (20), in particular a motor of the control unit (20) coupled to the coupling assembly (14), is adapted to be activated to shift the coupling assembly (14), in particular a switch unit (22) of the coupling assembly (14), by a closing of the current circuit; and/or
   that the coupling assembly (14), in particular a slide assembly (24) of the coupling assembly (14), is adapted to be biased in the direction of a follower position by an actuation of the key.
3. Locking system according to claim 1 or 2,
   characterized in that
   the coupling assembly (14) comprises an in particular multi-part outer sleeve that is not movable along an axial direction in the cylinder member (10), and a slide assembly (24) adapted to be shifted axially within the outer sleeve;
   wherein particularly the slide assembly (24) comprises a contact portion (26) adapted to be impacted by an actuation of the key, and a slider (28) that cooperates with a switch unit (22) and is adapted to be shifted between a free-running position and a follower position and also is coupled with the contact portion (26) via a coupling spring (30); and/or
   that the slide assembly (24), in particular a slider (28) of the slide assembly (24), comprises a radially projecting follower member (42) having in particular a radially extended portion (43), the follower member simultaneously projecting into a recess (44) of the outer sleeve, and into a recess (46) of the locking element (12), in particular of a spacer (48a) non-rotatably connected to the locking element (12) and preferably disposed on the side of the locking element (12) facing the control unit (20), for non-rotatably coupling the coupling assembly (14) to the locking element (12) in the follower position; and/or
   that the contact portion (26) and the slider (28) each have a contact piece (32) that is electrically insulated from the outer sleeve, wherein the contact pieces (32) are connected with each other in an electrically conducting manner by the coupling spring (30) and, together with the coupling spring (30), form a component part of the electrical circuit; and/or
   that the slider (28) is movable together with the contact portion (26) in the direction of the control unit (20) against the spring force of a readjusting spring (34) supported on an outer sleeve of the coupling assembly (14).
4. Locking system according to at least one of the preceding claims,
   characterized in that
   the coupling assembly (14), in particular a switch unit (22) of the coupling assembly (14), is designed to be a centrifugal unit;
   wherein in particular the switch unit (22) comprises a disc (36) adapted to be set into rotation by the control unit (20), in particular by a motor of the control unit (20), and at least one centrifugal unit (38) on the side of the disc (36) facing the slide assembly (24), in particular a slider (28) of the slide assembly (24), wherein when the disc (36) rotates, a path for the slider (28), in particular for a mandrel (40) of the slider (28) projecting in the direction of the switch unit (22), to the control unit (28), that is blocked in the free running state by the centrifugal element (38), is opened;
   wherein in particular two centrifugal elements (38) of substantially the same construction and symmetrically disposed with respect to a rotational axis of the disc (36) are provided, the centrifugal elements being swivelled with respect to the disc (38) by a rotation the disc (36), in particular each being swivelled against the spring force of a return spring (39);
   wherein in particular the centrifugal elements (38) each have an at least approximately semicircular cross-section in a plane perpendicular to a rotational axis of the disc (36), wherein the swivel axes of the centrifugal elements (38) extend symmetrically to the rotational axis of the disc (36), and in each case through a corner area of the centrifugal elements (38);
   wherein in particular the two centrifugal elements (38) in a free running state supplement each other to form an at least approximately circular locking disc that is approximately concentric with respect to the disc (36), and in a follower state are separated from each other by a gap for the slider (28), in particular for a mandrel (40) of the slider (28), the gap extending parallel to the two straight sides of the centrifugal elements (38).
5. Locking system according to claim 3 or 4,
   characterized in that
   by an actuation of the key, an electrically conducting connection can be established between the slide assembly (24) and the control unit (20) via the switch unit (22), in particular via a mandrel (40) of a slider (28) of the slide assembly (24), at least one centrifugal element (38), and a shaft coupled with the switch unit (22), and/or a casing of a motor of the control unit (20).
6. Locking system according to at least one of the preceding claims,
   characterized in that
   the control unit (20) is accommodated in a casing (50), in particular of a rotary knob (68) that is connected preferably non-rotatably with the locking element (12); and/or
   that it is designed for operation with batteries and/or rechargeable accumulators, wherein preferably at least one battery and/or accumulator unit is adapted to be incorporated in the control unit (20) or accommodated in a casing (50) of the control unit (20); and/or
   that the key (16) comprises a key body (60) having a grip portion (78) and a shaft portion (84), wherein the communication unit (18) is mounted on the grip portion (78), and wherein preferably the grip portion (78) and the communication unit (18) are extrusion coated with synthetic material.
7. Locking system according to at least one of the preceding claims,
   characterized in that
   the communication unit (18) comprises a key-specific communication member that is assigned to an electronic assembly, particularly configured as a transponder unit (52), of the key (16), and that is preferably incorporated in the electronic assembly, and also comprises a lock-specific communication member (54) that is assigned to an electronic assembly of the control unit (20), wherein in particular the communication members are adapted for communicating with each other via electromagnetic waves, and preferably each comprises at least one induction coil (54); and/or
   that a transponder unit (52) of the key (16) extends at least regionally through the induction coil (54) of the control unit (20), wherein preferably the induction coil (54) is directly wound onto the transponder unit (52); and/or
   that the information which is exchangeable between the electronic assemblies of the key (16) and the control unit (20) via the communication members (54) comprises at least one key-specific code stored in a memory element of the electronic assembly of the key (16), wherein the electronic assembly of the control unit (20) is designed for comparing the key-specific codes with at least one lock-specific code stored in a memory element, and for switching on a motor for shifting the coupling assembly (14) in the case of a coincidence of the codes; and/or
   that a feed line, configured in particular as a strip-shaped printed circuit board (56), of the lock-specific communication member (54) passes along a shaft portion (84) of the key (16), and comprises a contact tip (58) projecting beyond the front free end of the shaft portion (84), and is electrically insulated from a key body (60), in particular by means of a strip-shaped mica plate (62).
8. Locking system according to at least one of the preceding claims,
   characterized in that
   the key (16) is designed as a charging element for rapidly chargeable capacitors, in particular of the Golden Caps Type, of the control unit (20); and/or
   that the cylinder member (10) is designed as a cylinder adapter usable with the lock, instead of a locking cylinder, particularly a standardized profile cylinder; and/or
   that the coupling assembly (14), in particular an inner cylinder (64) of the coupling assembly (14) forming the key-side end portion of an outer sleeve and provided with a key path (65) for the key (16), is provided with a coding particularly in the form of a pin tumbler arrangement that permits a rotating of the coupling assembly (14) in the cylinder member (10) only with the inserted key (16), and a withdrawal of the key (16) only at a predetermined angular position of the coupling assembly (14); and/or
   that the control unit (20), in particular a hollow shaft portion (66) of a casing (50) of the control unit (20) non-rotatably connected to the locking element (12), is adapted to be interlocked with the cylinder member (10) at an angular position corresponding to the angular position of the coupling assembly (14) for withdrawing the key (16).

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