WO2008074642A1

WO2008074642A1 - Blocking cylinder with a tumbler pin which can be shifted by magnetic force, and with an associated key

Info

Publication number: WO2008074642A1
Application number: PCT/EP2007/063396
Authority: WO
Inventors: Alexander Stefanescu
Original assignee: C. Ed. Schulte Gesellschaft mit beschränkter Haftung Zylinderschloßfabrik
Priority date: 2006-12-18
Filing date: 2007-12-06
Publication date: 2008-06-26
Also published as: DE102006059599A1

Abstract

The invention relates to a locking cylinder (1) with a locking device comprising a matching key (2), wherein the locking cylinder (1) has a cylinder housing (3) and a cylinder core (5) mounted in a bearing bore (4) of the cylinder housing (3), wherein the key (2) can be pushed into a key passage (6) of the cylinder core (5), wherein the cylinder core (5) has at least one core bore (7) opening into the key passage (6), and the cylinder housing (3) has at least one housing bore (8) which is aligned with the core bore (7), wherein a spring-free, ferromagnetic or magnetic tumbler pin (9) lies in the housing bore (8) and, when the key (2) is not inserted, projects in some regions into the cylinder bore (7), wherein the key (2) has a coding cutout (10) which, in the inserted state, is in alignment with the core bore (7), and a magnetic section (11) adjacent to said coding cutout, and wherein the tumbler pin (9) which is drawn by the magnetic section (11) of the inserted key (2) into the coding cutout (10) lies completely in the core bore (7). In order to improve a locking cylinder of the type in question in terms of locking and to improve an associated key in particular in terms of manufacturing, it is proposed that the magnetic section is formed by a permanent magnet (11) arranged in a cutout (19) on the broad side of the key (2).

Description

Locking cylinder with tumbler pin displaceable by magnetic force and associated key

The invention relates to an existing from a lock cylinder with matching key locking device, wherein the lock cylinder has a cylinder housing and mounted in a bearing bore of the cylinder housing cylinder core, wherein the key is inserted into a keyway of the cylinder core, wherein the cylinder core at least one opening into the keyway core hole and the cylinder housing has at least one aligned with the core bore housing bore, wherein in the housing bore rests a springless ferromagnetic or magnetic tumbler pin which protrudes partially unincorporated key into the core bore, wherein the key lying in the inserted state flush with the core hole coding recess and one of these has adjacent magnetic portion and wherein the magnetic pin from the inserted portion of the key inserted into the coding recess tumbler pin v completely located in the core hole.

Such a device is previously known from DE 10 2004 007364 Al. There the key has a magnetic section. This is to be made before introducing the coding recesses. The magnetic portion is associated with a coding recess such that a tumbler pin made of steel is attracted to the magnetic portion of the key inserted in the keyway. The tumbler pin is then pulled out of the housing bore so far that it completely in the

Core hole rests. The blocking effect, which has the tumbler pin with not inserted key is canceled. If the remaining, with springs in the direction of the key acted upon tumbler pins also sorted correctly, the cylinder core can be rotated by the inserted key. If the key is not inserted, the tumbler pin rests on a spacer, which rests on the bottom of the downward facing housing bore supports. The tumbler pin is held there by gravity. In this position, it blocks the rotation of the cylinder core, since it rests partially in the core hole and partially in the housing bore and thus crosses the parting line between the bearing bore and cylinder core. If an otherwise properly profiled key, but has no magnetic portion at the required location, inserted into the keyway of the lock cylinder, the springless tumbler pin remains in its locking position.

From DE 2201 281 a lock cylinder is known in which the key is to consist of steel. One of the tumbler pins is featherless. He is held by gravity in a locked position. This tumbler pin consists of a magnet. If the key is inserted, the magnetic tumbler pin is tightened and thus shifted from its blocking position.

From DE 29 50 143 Al a flat key is known which is equipped with eccentric magnets lying.

From DE 26 29 346 a flat key with magnetic sections is known. The magnetic portions are realized there by magnetic powder.

The known from DE 297 18 647 Ul flat key has a drilled notch.

From EP 0 812 971 A2 a flat key for a cylinder lock is already known, which carries two magnetic pills.

From DE 750 210 a key is known in which rod magnets are inserted in the key shank. Based on the above-mentioned prior art, the present invention seeks to improve a genus in modern lock cylinder closing technology and an associated key in particular manufacturing technology.

The object is achieved by the invention specified in the claims.

Each claim represents an independent solution of the task and can be combined with any other claim.

According to the invention, it is initially provided that the magnetic section of the key is formed by a permanent magnet arranged in a broad-side recess of the key. The lock cylinder according to the invention is initially and essentially further developed in that a core pin or a housing pin is permanently magnetized. Both pins can also be permanently magnetized. If only one pin is magnetized, the other pin is made of steel or another ferromagnetic material. The permanent magnet, which forms the magnetic portion of the key, is preferably inserted in a broad side recess of the key. The permanent magnet can be oversized. The excess is about one

Hundredth or two hundredths of a millimeter. The permanent magnet is pressed with a corresponding force in the prepared broad side recess of the key shank. The material thickness of the permanent magnet is preferably greater than the depth of the broad side recess, so that the free end face of the permanent magnet which is inserted in the broad side recess forms the bottom of the coding recess. The depth of the coding recess is thus determined by the end face of the permanent magnet or its material thickness. The permanent magnet may have a circular disk shape. It is preferably magnetized in the axial direction. This means that one end face is a north pole and the other end face is a south pole. The tumbler pins need in a lock cylinder of the invention The locking device must not be magnetic. A ferromagnetic tumbler pin, which locks the parting line between the core bore and the cylinder core when the key is not inserted, and which is pulled into a release position by the permanent magnet of the key inserted in the keyway, is sufficient. Preferably, the lock cylinder of the locking device according to the invention but has two tumbler pins, namely a core pin and a housing pin. Both can be made of steel. But both can also be magnetized in the same direction. The lock cylinder also has a variety of other, conventional Zuhaltungsstiftpaare that are acted upon by springs in the direction of the keyway. By using a permanent magnetic plate at various locations along the key groups can be formed within a locking system. Such a group formation can also be formed by a plurality of permanent magnetic plates in the key. In a further development of the invention it is provided that the housing pin has a multi-part structure. The uppermost pin of the housing pin assembly may be magnetic or ferromagnetic. It then adheres to the core pin when it is tightened to the permanent magnet of the key. In a first variant, the lock cylinder, in addition to one or more conventional tumblers, has only one restraining pin, which cooperates with a magnet. The tumbler pin is held in a locked position by gravity. In this, the tumbler pin is supported on the bottom of the core bore or on a spacer in such a way that it blocks the rotation of the cylinder core. The tumbler pin can be made of steel or another magnetizable material. If the appropriate key is inserted into the keyway of the cylinder core, the tumbler pin is tightened. It has such a length that it rests completely in the core bore in this state. If the remaining spring-loaded pairs of tumbler pins are arranged appropriately, the cylinder core can be rotated. Alternatively, the tumbler can also consist of a magnetized material. It must then be magnetized rectified with the permanent magnet in order to be attracted. Such a tumbler pin preferably has a steel jacket. The formed by the steel shell cavity of the tumbler pin is filled with a permanent magnetic soul. In an alternative, the lock cylinder may also have a housing pin. This can be made of steel or magnetized rectified to the core pin. Also, the housing pin can form a steel shell in which a permanent magnetic soul is inserted. In both cases, however, the casings can also consist of a non-ferromagnetic material, for example of brass or another material which is not magnetizable. As a result, the reliability of the lock cylinder is improved. If the lock cylinder has a pin tumbler, which consists of a core pin and a housing pin, the core pin has a length such that its end face pointing to the housing pin lies correctly arranged in the parting plane between the bearing bore and the cylinder core, so that the housing pin rests only in the housing bore. Due to the magnetic force of the housing pin but adheres to the attracted by the permanent magnet of the key core pin. If the cylinder core is rotated, the adhesion is lost. The housing pin then falls down. If the coding recess of the key is too deep, the housing pin may lock. In a further development of the invention it is provided that the housing pin has a multi-part structure. He can have several tiles. These stacked platelets are also permanently magnetized. The invention also relates to a locking system with one or a plurality of conventional locking cylinders. With these lock cylinders, all tumbler pin pairs with tumbler springs are cushioned in the direction of the keyway. This lock cylinder can be closed by a key with a magnetic section and by a mechanically coded key without a magnetic section. The locking system according to the invention also has a further lock cylinder with a spring-free tumbler pin, the same closing with at least one of the aforementioned lock cylinder, so that a key with a magnetic insert has a higher-level closing function, namely both a lock cylinder at least one spring-free tumbler pin as well as a lock cylinder with conventional tumbler pins closes.

Embodiments of the invention are explained below with reference to accompanying drawings. Show it:

1 a lock cylinder partially cut in the side view, with not inserted key,

2 shows a matching key in the broadside view,

3 is a section along the line III - III in Fig. 2,

4 shows a representation according to FIG. 1 with the key inserted, FIG.

5 is an enlarged detail of FIG. 4,

6 shows a second embodiment of the invention in a representation according to FIG. 5, FIG.

7 shows a further embodiment of the invention in a representation according to FIG. 4,

Fig. 8 shows a further embodiment of the invention in a representation according to FIGS. 2 and

9 is a section along the line IX - IX in Fig. 8.

Fig. 1 shows a double lock cylinder, in which the half shown on the left is cut. The reference numeral 9 ¹ a total of four core pins are called, the core holes assigned in a cylinder core. 5 lie. The core holes are aligned with housing bores in which associated housing pins 12 'einliegen, each of which is spring-loaded by a spring 16 supported on the bottom of the housing bore in the direction of a keyway 6 of the cylinder core.

In the position shown in FIG. 1, the housing pins 12 'lock the rotatability of the cylinder core 5, since they project beyond the parting line between the bearing bore 4 and the cylinder core 5.

A middle pair of pins consists of a core pin 9, which lies in a core hole 7. The core bore 7 is aligned with a housing bore 8. In the housing bore 8 is inserted a core pin 12. On the bottom of the housing bore 8 is a spacer 18. The housing pin 12 is acted upon by any spring. He is rather gravitationally loaded on the spacer 18. On the housing pin 12 of the core pin 9 is located. It projects in regions both in the core hole 7 and in the housing bore 8 so that it also locks the rotation of the cylinder core 5 with not key inserted.

The core pin 9 is made of such a material that it can be attracted by a magnet. In the embodiment illustrated in FIGS. 1 and 2, the core pin 9 is made of steel or another ferromagnetic material. The housing pin 12 is made of steel or another ferromagnetic material.

The key shown in Figures 2 and 3 is a flat key. He has on its opposite broad sides Codieraussparungen 10 '. It is a reversible flat key. The coding recesses 10 'have different depths. Their depth is the respective length of the associated core pin 9 ¹ adapted so that the lying in the Codieraussparung 10 'end opposite end of the core pin 9 ¹ lies in the parting plane. The Codieraussparung 10 is formed by a broad side recess 19 of the key 2. It is a cylindrical bore. The bore is deeper than the required depth of the Codieraussparung 10 to sort the corresponding Kernstift 9 correctly. On the bottom of the broad side recess 19 is a permanent magnet 11. It is an insert. The permanent magnet 11 has a circular disk shape. The diameter of the permanent magnet 11 is larger by about two hundredths of a millimeter than the diameter of the broad-side recess having a circular outline. The permanent magnet 11 is located in the clamping seat within the broad side recess. He is pressed there by a corresponding force. The outwardly facing end face II ^{1 of} the permanent magnet 11 forms the bottom of the Codieraussparung 10. The opposite end face of the permanent magnet 11 rests on the bottom of the broad side recess 19. The disc-shaped permanent magnet 11 is magnetized in the axial direction. In the embodiment, the south pole points down.

If this key is inserted into a lock cylinder according to FIG. 1, the tumbler pins 9 \ 12 'or 9, 12, as shown in FIG. 4, are sorted. The permanent magnet 11 attracts the ferromagnetic core pin 9. If the force of the permanent magnet 11 is sufficiently large, the housing pin 12 is also lifted. The parting plane between the housing pin 12 and core pin 9 is now in the dividing plane between Zy cylinder core 5 and bearing bore 4. The lock cylinder can be operated. By turning the key 2, the cylinder core 5 is rotated and a closing member 17 entrained to operate a lock, in which the lock cylinder 1 is inserted.

In the embodiment shown in FIG. 5, the core pin 9 is made of a ferromagnetic material. The housing pin 12 is magnetic. The south pole points down here. If not inserted key results the gravity-related locking position shown in Fig. 1. If a key is inserted, the two pins 9, 12 are tightened because the magnetization of the magnet 11 and the housing pin 12 is rectified.

If a key is inserted without permanent magnet 11 at the right place, so remain the pins 9, 12 in their gravitational locking position. Despite possibly correct Codieraussparungstiefe the lock cylinder can not be operated. The number of possible closures has been increased according to the embodiment of the invention.

In the embodiment shown in FIG. 6, both core pin 9 and housing pin 12 are magnetized rectified. Fig. 6 also shows a preferred embodiment of magnetized tumbler pins 9, 12. The respective tumbler pin may be made of steel or preferably brass. He has an axial cavity. While the housing pin 12 has a through hole in which the associated core 14 is inserted, the core pin 9 has a blind bore in which the associated soul 13 is inserted.

Fig. 8 shows an alternative in the form of a narrow side profiled key. The key has on one of its narrow sides a plurality of coding recesses 10, 10 '. The coding recess 10 is adjacent to a permanent magnet 11. Here, too, the permanent magnet 11 is clamped in an undersized flat side recess 19. The broad side recess 19 sits directly above the apex of the notch 10 forming the coding recess. Here, the permanent magnet is magnetized in the diametric direction. Again, a pole, in the embodiment of the South Pole, down. The permanent magnet is shown here in a circle. Because of the diametral magnetization, it is advantageous if the plan of the magnet is out of round. The broad side recess 19 can then, for example, form an oval shape, which is introduced with a corresponding end mill in the key broadside. In this oval broadside opening then a correspondingly oval magnetic disk 11 can be used. It is also conceivable to magnetize the magnetic disk only after it has been pressed into the wide-side opening 19.

In the embodiment shown in Fig. 7, the housing pin is divided into two parts. It consists of a lower pin 12 and a top pin 15. The upper pin 15 is permanent magnetic and narrow. This upper housing pin 15 can also be pulled into the core bore 7 by a correspondingly profiled key. This makes it possible that several different keys can close this lock cylinder.

The housing 1 and the cylinder core is made of non-magnetizable material. The key 2 is made of a non-magnetizable material. As a material comes for these components of the lock cylinder or for the key 2 brass or nickel silver into consideration. It is considered advantageous that a conventional locking system, the lock cylinder have only sprung Zuhaltungsstiftpaare can be easily expanded. In a key that closes one or more of the conventional lock cylinders, a coding recess 10 is equipped with a permanent magnet 11. This is done by drilling or milling a recessed broadside recess 19 on the corresponding broad side of the key. A permanent magnet with oversize is pressed into the wide side opening. The broad side recess 19 has a depth increased by the material thickness of the magnet 11 so that the end face II ^{1 of} the permanent magnet forms the bottom of a coding recess 10. This key fits the conventionally equipped lock cylinder.

This locking system has been extended by at least one lock cylinder, which has a non-sprung tumbler pin 9 at the point where the key is the permanent magnet 11. This tumbler pin 9 is able to be attracted by the permanent magnet. He is held by gravity in the locked position. If the key provided with the permanent magnet 11 is inserted, the effect already described above takes place. The tumbler pin 9 is tightened. If, however, an identically profiled key is inserted without permanent magnets 11, the tumbler pin 9 remains in its blocking position.

In the embodiment shown in FIG. 1, the housing pin 12 may also consist of a non-magnetizable material. It can, for example, consist of brass. He then acts essentially as a pure spacer.

The locking cylinder shown in the figures may be part of a locking system, this locking system has at least one further lock cylinder in which all tumblers consist of two pins, namely a core pin and a housing pin and acted upon by all the tumblers in the direction of the keyway of a tumbler become. The length of the core pins is matched in both lock cylinders such that a key having a magnetic portion is able to close both lock cylinders. An identically profiled second key, in which the magnetic portion is missing, is able to close only the conventional lock cylinder, in which all the tumbler pins are cushioned in the direction of the keyway. Since the springless tumbler pin of the lock cylinder according to the invention is not tightened by this key, only the conventional lock cylinder can be closed with this key. By contrast, with an identically profiled lock cylinder with a magnetic section, both lock cylinders can be closed so that this key has a higher-order function.

All disclosed features are essential to the invention. The disclosure content of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in the disclosure of the application. also included for the purpose of including features of these documents in claims of the present application.

Claims

1. From a lock cylinder (1) with matching key (2) existing closure device, wherein the lock cylinder (1) a cylinder housing (3) and one in a bearing bore (4) of the cylinder housing (3) mounted

Cylinder core (5), wherein the key (2) in a keyway (6) of the cylinder core (5) can be inserted, wherein the cylinder core (5) at least one in the keyway (6) opening out core bore (7) and the cylinder housing (3 ) Has at least one aligned with the core bore (7) housing bore (8), wherein in the housing bore

(8) a springless ferromagnetic or magnetic tumbler pin (9) rests, which protrudes in non-inserted key (2) partially into the core bore (7), wherein the key (2) in the inserted state in alignment with the core bore (7) lying Codierungsaussparung ( 10) and one of these adjacent magnetic portion (11) and wherein the magnetic portion (11) of the inserted key (2) into the Codierungsaussparung (10) tightened tumbler pin (9) lies completely in the core bore (7), characterized in that the magnetic section is formed by a permanent magnet (11) arranged in a broad side recess (19) of the key (2).

2. Locking device according to claim 1 or in particular according thereto, characterized in that the permanent magnet (11) is pressed into the blind bore (19).

3. Locking device according to one or more of the preceding claims or in particular according thereto, characterized in that the permanent magnet (11) is manufactured with an excess of the width of the broad side recess (19).

4. Locking device according to one or more of the preceding claims or in particular according thereto, characterized in that the depth of the coding recess (10) of the end face (II ¹ ) of the permanent magnet (11) is determined.

5. Locking device according to one or more of the preceding claims or in particular according thereto, characterized by a circular disk-shaped permanent magnet (11).

6. Locking device according to one or more of the preceding claims or in particular according thereto, characterized in that the permanent magnet (11) is magnetized in the axial direction.

7. Locking device according to one or more of the preceding claims or in particular according thereto, characterized in that the

Tumbler pin (9) is magnetized.

8. Closing device according to one or more of the preceding claims or in particular according thereto, characterized by cooperating with the tumbler pin formed by a core pin (9)

Housing pin (12).

9. Locking device according to one or more of the preceding claims or in particular according thereto, characterized in that the housing pin (12) is magnetized.

10. Locking device according to one or more of the preceding claims or in particular according thereto, characterized in that the core pin (9) and / or the housing pin (12) has a non-magnetized sleeve and a magnetized core (13, 14).

11. Closing device according to one or more of the preceding claims or in particular according thereto, characterized in that the key has a plurality of magnetic inserts (11) and the lock cylinder a corresponding number of springless tumbler pins (9).

12. lock cylinder for a closing device according to one or more of the preceding claims with a cylinder housing (3) and a bearing bore (4) of the cylinder housing (3) mounted cylinder core (5), wherein the cylinder core (5) has a keyway (6) for Insertion of a key (2), wherein the Zy linder core (5) at least one in the keyway (6) opening core bore (7) and the cylinder housing (3) at least one with the core bore (7) aligned housing bore (8) , wherein in the mutually aligned bores (7, 8) a springless ferromagnetic or magnetic Zuhalt- tungsstiftpaar (9) rests, wherein the core pin (9) when not plugged

Key (2) the fulcrum between the bearing bore (4) and cylinder core (5) crosses, characterized in that the housing pin (12) and / or the core pin (9) is permanently magnetized, so that both pins are magnetically coupled to each other.

13. Lock cylinder according to claim 12 or in particular according thereto, characterized in that both core pin (9) and housing pin (12) are permanently magnetized in the same direction.

14. Lock cylinder according to one or more of the preceding claims 12 or 13 or in particular according thereto, characterized in that the core pin (9) and / or the housing pin (12) have a stuck in a cavity permanent magnetized soul (13, 14).

15. Lock cylinder according to one or more of the preceding claims 12 to 14 or in particular according thereto, characterized in that the Lock cylinder a plurality of springless ferromagnetic or magnetic tumbler pins (9, 12).

16. A key for a lock cylinder according to any one of the preceding claims, wherein the key (2) has a coding recess (10) and one of these adjacent magnetic portion (11), characterized in that the magnetic portion of a in a broad side recess (19 ) of the key (2) arranged permanent magnet (11) is formed.

17. Key according to claim 16 or in particular according thereto, characterized in that the permanent magnet (11) in the broad side recess (19) is pressed.

18. Key according to one or more of the preceding claims 16 or 17 or in particular according thereto, characterized in that the width of the permanent magnet (11) is greater than the nominal width of the broad side opening (19).

19. Key according to one or more of the preceding claims 16 to 18 or in particular according thereto, characterized in that the depth of the coding recess (10) of the end face (II ¹ ) of the permanent magnet (11) is determined.

20. Key according to one or more of the preceding claims 16 to 19 or in particular according thereto, characterized by a circular disk-shaped permanent magnet (11).

21. Key according to one or more of the preceding claims 16 to 20 or in particular according thereto, characterized in that the permanent magnet (11) is magnetized in the axial direction.

22. Key according to one or more of the preceding claims 16 to 21 or in particular according thereto, characterized in that the key (2) has a plurality of magnetic inserts (11).

23. Key according to one or more of the preceding claims 16 to 22 or in particular according thereto, characterized in that the permanent magnet (11) is magnetized in the diametric direction and the Codieraussparung of a narrow side notch (10) is formed.

24. Locking system with at least two locking cylinders, wherein at least one lock cylinder has only such tumblers, each consisting of a core pin (9 ¹ ) and a housing pin (12 ¹ ) and by a tumbler (16) in the direction of a keyway in a cylinder housing ( 3) mounted cylinder core (5) are kraftbeaufschlagt, and which is closable with a key without a magnetic section, characterized by at least one further lock cylinder according to one of claims 12 - 16 and a key according to one of claims 17 - 23, which key closes both lock cylinders ,