EP0743412B1 - Profiled lock cylinder - Google Patents

Abstract

The lock (1) has a circular cylindrical section (2) and a bar-shaped section (3) into which the core (4) is fitted. The cylindrical section has radial tumblers (6) whose function is augmented by that of a bolt (8) movable between closed and open positions (9,10) by an electric drive (11). Information encoded (18) on the key is read by a contactless decoder (19) connected to a control unit (17), bistable switch (16) and battery (15). The decoder is located in the vicinity of the point (26) where the keyhole (7) passes through the wall of the core.

Description

The present invention relates to a profile cylinder according to the preamble of claim 1.

Such profile cylinder is known for example from DE-A-43 36 476.

The advantage of this known profile cylinder lies in particular in the many possible variations, since the radially oriented tumblers can also be provided several times within a tumbler level.

It is to be understood, however, that in the context of the present application not only arrangements for the tumblers of the above DE-A-43 36 476 but any tumblers to be included, which are provided radially towards the keyway and only in the circular cylindrical portion of the profile cylinder.

The achievable in these profile cylinders compact design allows despite increased security by increased number of variations not yet an electronically secured user ID that decides only by introducing electronic information, whether the lock core may be operated by the inserted key.

Such electronic user identification has been implemented in the course of increasing security requirements in a built-in profile cylinder design only for cases in which the additional electronic information on the key causes an undesirably high key length.

It is therefore an object of the invention to further develop the known profile cylinder with its compact radial arrangement of tumblers so that it can be actuated only in the presence of a predetermined and recognizable as access authorization information, regardless of the mechanical tumbler.

This object is achieved in the above-mentioned profile cylinder by the characterizing features of claim 1. The arrangement of the locking element in the web area therefore does not force a reduction in the number of tumblers. The blocking element creates a short stop length of the profile cylinder, which is independent of the number of mechanical tumblers. The blocking element is arranged outside the Zuhaltungsreihen and preferably there in the lock cylinder, where the lock core has a breakthrough point in the circumferential direction.

From the invention there is the advantage that in addition to increased safety by the radial tumblers in the circular cylindrical portion of the profile of the entire previously unused web-like area such profile cylinder for receiving a motor-driven locking element together with associated drive circuit can be exploited, with associated energy storage even there are arranged.

It is essential that the motor-driven locking element engages on its lock core in addition to the radial tumblers. This creates a double security against unauthorized opening because even with mechanically correct key while the tumblers are opened, but the electrically driven lock unaffected engages in the lock core. Only in the presence of the right combination of key cuts for aligning the tumblers with the right electrical electromagnetic electrotechnical or the like. Information about activation of the locking element of the lock core is released and only then can the lock core rotate. In the context of the present application, the term "tumbler" an arrangement of at least two end-to-end pins understood that sit together with a spring only in the circular cylindrical portion of the lock cylinder and in a profile cylinder and the lock core passing through the hole in the preferred position being held. Essential for these tumblers is the fact that only after inserting the correct key, the key cuts provided shift the tumblers in their bore so that the dividing plane of the adjacent pins in the plane of rotation between the lock core and surrounding cylinder housing.

The blocking element may be provided on the outside of the door or on the inside of the door. Particularly advantageous is the outside of the door arrangement, since then the lock core located there is additionally secured against burglary by means of the locking element. For the blocking element, an electrical, e.g. an electric motor drive provided. This may also be an electromagnetic drive. Assuming, however, that the locking element only requires a closed position and an open position, an electric motor driven crank may be provided for driving the locking element, which is rotatable back and forth between an upper and a lower dead center. For this purpose, suitable micromotors, possibly. Acting on reduction gear acting on the crank, may be provided. As electrical energy storage, button cells or high-performance batteries may be considered, e.g. Type A 23.12 Volt.

The electrical energy storage should preferably be arranged inside the door to protect them in the cold seasons from frost, especially to increase the life.

Be the ones for recognizing the access authorization necessary information on the key attached there, where the recesses for aligning the tumblers are, not only a lock cylinder short length but also a key can be used, the length does not exceed the necessary for operating the mechanical tumblers length.

In extreme cases, the information carrier lies exclusively within the key longitudinal area, which also carries the recesses for aligning the tumblers.

The invention can be found in profile cylinders with reversible key or with non-reversible key application.

Particularly advantageous is the use of non-reversible keys, as on the one hand provide the radially arranged tumblers in this type of profile cylinder sufficient variation and not provided with recesses area of the key back readily accommodate the / the corresponding information carrier.

The information carrier can be scanned either contactless or mechanically. The non-contact information scanning is preferred because of freedom from wear. For this purpose, in particular light wave scanning in question.

A preferred embodiment is characterized in that the key channel breaks through the wall of the lock core in the direction of the web region of the profile cylinder. This has manufacturing advantages for the production of the lock core. Then, in the region of the break-through point on the stationary part of the profile cylinder and on the corresponding point of the key back, on the one hand, the information carrier and, on the other hand, the information-reading device are to be attached. As a result, not only can additional transmission elements be saved, but also the stored information is transmitted directly, recognized and used for the control.

A development of the invention provides to form the barrier fork-shaped. This results in two locking pins, which engage in the lock core. The fork stands with their tines essentially so that the two prongs are on different sides of the web region center intersecting axial plane.

If, in addition, the information carrier is assigned to the key in such a way that it passes over its stationary, associated reading device on the profile cylinder before the inserted key has moved to the end stop, this offers an additional advantage: for reading and processing the information "access authorization" and for the activation of the drive and the procedure of the blocking element in the open position, is to be estimated for a certain time. During this time, the key must not be twisted with the lock core, otherwise the locking element would be clamped at the parting line between the lock core and cylinder housing.

However, if one looks forward to transmitting the associated information for controlling the blocking element before the tumblers are mechanically unlocked (= end position of the key), this risk is eliminated. The motor-driven lock will be open before the mechanical opening of the tumblers has taken place.

Fig.1

einen nicht erfindungsgemäßen, jedoch einzelne Merkmale der Erfindung aufweisenden Profilzylinder,

Fig.1a

Querschnitt des Profilzylinders in Fig.1 entlang der Linie II-II

Fig.2

ein Ausführungsbeispiel der Erfindung,

Fig.3

ein Ausführungsbeispiel der Erfindung mit zeitlich vor Erreichen des Endanschlags erfolgter Informationsübertragung,

Fig.3a

Querschnitt des Ausführungsbeispiels in Fig.3 entlang der Linie III-III, und

Fig.4

Sperrelement mit elektromagnetischem Antrieb.

In the following the invention will be explained in more detail with reference to embodiments. Show it:

Fig.1

a non-inventive, but individual features of the invention having profile cylinder,

1a

Cross section of the profile cylinder in Figure 1 along the line II-II

Fig.2

an embodiment of the invention,

Figure 3

an embodiment of the invention with time before reaching the end stop information transfer,

3a

Cross-section of the embodiment in Figure 3 along the line III-III, and

Figure 4

Locking element with electromagnetic drive.

Unless otherwise stated below, the following description applies to all figures.

The figures show a profile cylinder 1. Such profile cylinder is, as the cross-sectional drawings of Fig.1a, 3a show a circular cylindrical portion 2 and an attached thereto web-like region 3. The outer housing of the profile cylinder is integrally formed. The circular cylindrical portion of the profile cylinder is therefore made of the same material with the web-like attached area 3.

The circular cylindrical portion 2 serves to receive the rotatable lock core 4. For manufacturing reasons, the rotatable lock core 4 is rotatably mounted within a tube 5. The tube 5 is fixedly arranged within the circular cylindrical region 2. The tube 5 has radial bores which are aligned with holes of the lock core 4 and in which the tumblers 6 together with their springs stuck.

Of essential importance to the invention is the fact that the tumblers 6 are provided only and in this way in the circular cylindrical portion 2 of the profile cylinder. The tumblers operated by the key are therefore not found within the web-like area 3.

It is known per se that such tumblers 6 are elastically supported and are held by the support elements in a preferred position. The preferred position is changed by inserting the key in the profile cylinder so that the tumblers along the plane of movement of the lock core 4 relative to the surrounding tube 5 are adjusted so that there lying division levels of the tumbler allow a rotation of the lock core.

Although this is known per se, reference is additionally made to DE 43 36 476. With regard to the features not mentioned here, the content of this application is also made the subject of the present application.

Furthermore, the figures show that the lock core 4 is traversed in the longitudinal direction of a keyway 7. The keyway 7 has a dumbbell-like cross-sectional shape (see Fig.1a) or a mushroom-shaped cross-sectional shape (see Fig. 3a). Consequently, the invention is not limited to reversible keys or so-called non-reversible keys. In any case, all types of keyway cross-sections come into consideration, as long as the profile cylinder has only radial tumblers in the circular cylindrical area.

It is essential that in addition to the tumblers 6 in the circular cylindrical portion 2, a blocking element 8 is provided. The blocking element 8 is movably guided in the web-like area of the profile cylinder. It is a transverse to the core lock pin or the like, which is driven to move between a closed position 9 and an open position 10. In the blocking position 8, the blocking element 8 engages in the rotational mobility of the lock core drehverhindert a. In the open position, the blocking element 8 releases the lock core.

For this purpose, a transverse bore is flush with the leadership of the locking element 8 in the web-like region 3 of the profile cylinder 1 in the lock core 4 attached. In this transverse bore, the tip of the locking element 8 engages in the closed position. In the open position 10, however, the tip of the locking element 8 is moved out of the lock core so far that the positive engagement of the locking element 8 in the lock core 4 is omitted.

The blocking element 8 is in the cases Fig.1 to 3 connected by a drive 11 and is driven by the drive 11 between the closed position 9 and the open position 10. For this purpose, the drive 11 consists of a stationary fixed electric motor, e.g. a DC micromotor. The micromotor is stationarily mounted on the web-like area 4 of the profile cylinder.

With the motor shaft 14 of the electric motor 12 is rotatably connected to a crank 13. The crank 13 carries an eccentric pin 33, on which the lower end of the locking element 8 is movable. As a result of the rotational movement of the crank 13 of the eccentric pin 33 is guided on a circular path around the motor shaft 14 around. In this case, the lower end of the locking element 8 is always positively connected to the eccentric pin 33. This is in turn guided in the web-like housing of the profile cylinder 1 only in the longitudinal direction, wherein the crosshead 34 decouples the pivoting with the crank rotation lower part of the locking element 8 from the exclusively linearly guided upper part.

It is also essential that the eccentric pin 33 can be driven so that it is moved between its top dead center and its bottom dead center. In this case, the closed position of the locking element 8 is present when the eccentric pin 33 has taken its top dead center. The open position is given when the eccentric pin 33 has hit its bottom dead center.

The advantage of this design is that manipulation from the outside is virtually impossible. Since in the top dead center position all forces that could cause a movement of the lock 8 in the longitudinal direction, go exactly through the pivot point of the motor shaft 14, manipulation of the blocking element 8 is not possible.

Furthermore, it is essential that the drive 11 only in response to information arranged on the key is controllable.

For this purpose, an information receiver 19 is fixedly provided on the profile cylinder 1, which cooperates with an information transmitter 18 mounted on the spine 27. The interaction takes place in principle such that when driving past the information transmitter 18 on the back of the key on the stationary information receiver 19 of the profile cylinder, an information provided on the key is scanned. If the information of the information transmitter coincides with a predetermined information, a corresponding switching signal is transmitted to the switching relay 16 via the control unit 17. This is a general switching element, e.g. Transistor arrangement, with two stable switching states. The switching relay 16 closes the circuit between the battery 15 and the electric motor 12. The electric motor completes half a motor revolution. As a result, the locking element 8 is moved out of engagement with the lock core 4. The lock core 4 can therefore be rotated as soon as the tumblers 6 have been moved to their release position.

In known manner, such profile cylinder are fastened with a forend screw 1a on the lock in the door leaf. They have a door-side region 21 and a door-outside region 20. The outside area on the outside can preferably carry the blocking element 8 together with the associated drive 11, which is why the electrical energy stores 15 would sit on the longitudinal side 21 of the profile cylinder inside the door. This offers the advantage that even at extreme low temperatures of the electrical energy storage 15 is heat protected. Since it is preferably a small battery, therefore, the functionality of the profile cylinder is fully maintained even in extreme outside temperatures.

In order to prevent further manipulation from the outside when the door is closed, preferably the energy storage 15 should be accessible only after removing the forend screw. Therefore a battery replacement can only be done with the door open. When the door is closed, the forend screw la would not be accessible.

With regard to the information transmitter 18 on the key back 27, reference is made to the following differences.

According to Figure 1 is a so-called reversible key. The key channel 7 is symmetrical. Such a key can be inserted into the keyway 7 in both possible upright positions.

For this reason, the information transmitter 18 is to be arranged on both key ridges 27. In this case, it would be irrelevant whether the key would be inserted in one or in the other upright position in the key channel 7.

Something else is true for key cross-sections of FIG. 3. Such key is, as seen from the cross section of the key channel, not symmetrical. He has only at the top of a thickening, while the lower key channel area extends web-like. In this case, the information transmitter 18 would be attached to the key back 27 only on the web-like key back.

The opposite key back has no information transmitter 18.

Another difference with regard to the embodiments Fig.1 and Fig.3. As is known, the recesses for actuating the tumblers 6 are arranged in a predetermined longitudinal region 25 of the key back. In the profile cylinder according to Figure 1, the information transmitter 18 is attached to the front end of the key and outside of this longitudinal region 25.

In the embodiments according to FIGS. 2 and 3, the information transmitter 18 is also located inside (FIG. 2) or exclusively within (Figure 3) of the longitudinal portion 25 with the recesses for the tumblers. 6

The advantage of this embodiment is that the key length can be kept very short overall. As a result of the varied possibilities of variation for the tumblers 6 in this type of lock cylinder, therefore, the information transmitter 18 can be mounted without changing the conventional key lengths within the longitudinal region 25 of the recesses.

The exchange of information between the information transmitter 18 and the information receiver 19 can take place either by mechanical scanning or preferably also by contact and thus without wear.

Particularly advantageous is the fact that the lock core 4 is penetrated by a key channel 7, which breaks through the wall of the lock core 4 where the keyway meshes in the key insertion position with the web-like region 3 of the profile cylinder 1. All tumblers 6 are outside the breakthrough point 26 in so-called Zuhaltungsreihen extending along the profile cylinder.

Therefore, the surface of the Informationsnehmers 19 can come to lie directly below that point on the key back 27, at which the information exchange between the information transmitter 18 and information receiver 19 is to come about.

The advantage lies in an unhindered and intervening materials not disturbingly shielded information exchange, because the information carriers involved in the information exchange can be directly opposite.

For this purpose, the keyway 7 breaks through the wall of the lock core on the side facing the web region 3 along a longitudinal region. In the area of the break-through point 26 is placed on the spine 27 of the information transmitter 18. The information recipient 19 is then provided fixed at the corresponding point of the pipe 5. When driving past the information transmitter 18 as a result of insertion of the key, therefore, the information user 19 can remove the information attached there and transmit it to the control unit 17.

In addition, FIGS. 1a and 3a show that the blocking element 8 is fork-shaped. It engages with two forks 28 in the lock core 4 a. Each of the forks 28 lies on each side of the key channel 7. Here, the key channel is each cut laterally. In these two secantial planes 30,31 are the entry openings of the forks. There takes place with retracting forks 28 a rotationally preventing engagement of the lock 8 in the lock core 4. The back of the key is flanked by one of the forks on each of its sides. The key thus locks even the rotation of the lock core when the forks are retracted. This also applies in the event that a manipulated key should have the correct mechanical codes.

In addition, the figures show the following:

Each key has an end stop 32. The end stop serves to limit the Einstecklänge of the key in the keyway 7. When the end stop 32 has arrived at the end face of the lock core 4, the key has reached its insertion position. In the insertion position, the tumblers 6 are aligned with the recesses in the longitudinal region 25 on the key back 27. In this complete insertion the tumblers 6 are opened and it should be released the rotational movement of the lock core. Considering now that from the beginning of a certain time is required by the exchange of information between the information transmitter 18 and information receiver 19 to open the lock 8 in engagement, the tumblers 6 should only be able to be operated when the lock 8 is opened. The opening of the lock 8 should therefore take place earlier than the operation of the tumblers. 6

For this purpose, it is proposed that the information exchange between the information transmitter 18 and information receiver 19 already takes place when the key with its end stop 32 is not yet in the full insertion position. It suffices, in principle, for information providers and information users to mesh with one another before insertion of the key in key channel 7, e.g. by relative passing to each other. FIG. 3 shows this situation at the beginning of the insertion, while FIG. 2 shows this situation shortly before the end of the insertion.

In this way, it is ensured that when using an approved key, the lock 8 is already open when the recesses on the back of the key press the tumblers 6. The anti-rotation engagement between lock 8 and lock core 4 is therefore already canceled when the key has reached its end position.

In particular, it is recommended, however, to provide the information recipient 19 deep within the key channel in order to rule out possible manipulations from the outset. Another advantage then results from the fact that eliminates tilting of the key, because the key is already inserted deep enough in the key channel 7 at the moment of passing its information transmitter 18 on the information receiver 19 and thus has a secure longitudinal guidance.

In addition, FIG. 4 shows an alternative embodiment for driving the barrier 8.

In this case, the drive 11 consists of an electrical coil 35 which is penetrated by a coil core 36. The coil core dips into coil 35.

The coil core is displaceable in the longitudinal direction within the coil windings. In order to achieve two defined end positions, the dead center 37 serves. The dead center spring 37 is supported with one end on the spool core while the other end is seated stationary. Now put a voltage to the electric coil 35, the core is displaced linearly to itself depending on the current flow direction. In the dead center 38, the dead center 37 has its shortest length, so that it is relaxed immediately after passing over the dead center 38. The relaxation of the dead center spring takes place until the lock 8 is in the opposite end position.

The advantage of this development is that a geared connection between the drive 11 and lock 8 is not required. In addition, the dead center 37 ensures that the manipulation from the outside is difficult.

If the lock 8 are moved to the opposite end position, then only a reversal of the coil terminals is provided, as shown in dashed lines.

LIST OF REFERENCE NUMBERS

1

profile cylinder

la

fixing screw

2

circular cylindrical area

3

web-like area

4

lock core

5

pipe

6

tumblers

7

keyway

8th

blocking element

9

closed position

10

open position

11

drive

12

electric motor

13

crank

14

motor shaft

15

Energy storage in the form of a battery

16

Switching element, transistor arrangement, bistable switching device

17

control unit

18

information provider

19

Receiving Member

20

outside door longitudinal area

21

inside door longitudinal area

25

Longitudinal area of the recesses

26

By breaking point

27

key back

28

forks

29

pushrod

30

first secantial level

31

second secantial plane

32

end stop

33

eccentric pin

34

Phillips

35

electric coil

36

Plunger

37

Dead center

38

dead center

Claims (16)

1. Profile cylinder (1) having a circular-cylindrical region (2) which receives the lock core (4) and having a region which is located thereon and attached in a web-like manner (3), wherein the profile cylinder can be attached by means of a lock bolt (1a) to a lock in a door leaf, wherein tumblers (6) which point radially in the direction towards the key channel (7) and are elastically supported are disposed merely in the circular-cylindrical region (2) and outside the region attached in a web-like manner, characterised in that in the assembled state the profile cylinder comprises a longitudinal region (10) which in relation to the lock bolt (1a) lies on the outer side of the door, and comprises a longitudinal region (10) which lies on the inner side of the door,
   wherein in one longitudinal region, preferably in the longitudinal region lying on the outer side of the door there is provided, in addition to the tumblers (6) in the circular-cylindrical region, a movably driven blocking element (8) in the web region (3), which blocking element in a closed position (9) engages into the rotational mobility of the lock core (4) in such a manner as to prevent rotation and in an open position (10) said blocking element releases the lock core (4), wherein
   the blocking element (8) is coupled to an electrical drive (11) and can be driven thereby between a closed and an open position (9, 10), said drive being controllable in dependence upon information provided on the key in an information encoder (18), and
   wherein
   in the assembled state on or in the other longitudinal region, preferably on or in the longitudinal region (21) on the inner side of the door, of the web (3) of the profile cylinder (I) there is provided an electrical energy storage device (15) for the electrical drive.
2. Profile cylinder as claimed in claim 1, characterised in that the electrical energy storage device (15) is only accessible after removal of the lock bolt (1a).
3. Profile cylinder as claimed in claim 1 or 2, characterised in that the blocking element (8) engages in a fork-like manner with at least two tines (28) into the lock core (4).
4. Profile cylinder as claimed in claim 3, characterised in that the tines (28) lie in different secantial planes (30, 31) of the lock core (4).
5. Profile cylinder as claimed in claim 3 or 4, characterised in that the key channel (7) is aligned in the key removal position such that the fork-like blocking element (8) engages on both sides of the key channel (7) into the lock core (4).
6. Profile cylinder as claimed in any one of claims 1 to 5, characterised in that a geared connection (13, 33, 34) is provided between the blocking element (8) and the drive (11).
7. Profile cylinder as claimed in claim 1, characterised in that the electrical drive (11) is formed by an electrical coil having a coil core which is movable relative thereto, and that the coil component which is connected to the blocking element (8) is connected to a power storage device (37) which between a closed position (9) and an open position (10) travels through a top dead centre position (38), wherein preferably the coil core supports the blocking element (8) on the end side.
8. System consisting of a profile cylinder as claimed in any one of claims 1 to 7 and of an associated key, characterised in that the information for authorising access is disposed in the longitudinal region (25) of the recesses for aligning the tumblers (6) on the key.
9. System consisting of a profile cylinder and of an associated key as claimed in claim 8, characterised in that the information encoder (18) which contains the information is disposed exclusively inside the longitudinal region (25) with the recesses.
10. System as claimed in claim 8 or 9 or consisting of a profile cylinder as claimed in any one of claims 1 to 7 and of an associated key, characterised in that the key is formed as a turning key.
11. System as claimed in any one of claims 8 to 10 or consisting of a profile cylinder as claimed in any one of claims 1 to 7 and of an associated key, characterised in that the key is formed as a non-turning key.
12. System as claimed in any one of claims 8 to 11 or consisting of a profile cylinder as claimed in any one of claims 1 to 7 and of an associated key, characterised in that the information encoder (18) contains electronic information and that information is exchanged between the information encoder (18) and the information decoder (19) in a contactless manner by means of electromagnetic wave.
13. System as claimed in any one of claims 8-12 or consisting of a profile cylinder as claimed in any one of claims 1 to 7 and of an associated key, characterised in that the information encoder (18) contains electronic information and that information is exchanged by means of contact-bound scanning.
14. System as claimed in any one of claims 8 to 13 or consisting of a profile cylinder as claimed in any one of claims 1 to 7 and of an associated key, characterised in that the key channel (7) passes through the wall of the lock core (4) and on the one hand the information encoder (18) and on the other hand the information-reading device (19) are disposed in the region of the location (26) where the key channels passes through the wall and in the region of the corresponding location of the key back (27).
15. System as claimed in claim 14, characterised in that the tumblers (6) lie outside the pass-through location (26) in tumbler rows which extend along the profile cylinder.
16. System as claimed in any one of claims 8 to 15 or consisting of a profile cylinder as claimed in any one of claims 1 to 7 and of an associated key, characterised in that the information encoder (18) is disposed on the key and the information-reading device (19) is disposed on the housing of the profile cylinder (1) relative to each other such that the information carrier (18) is read before the key end stop (32) is reached and that the tumblers (6) are only actuated when the end stop (32) is reached.

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