EP0802289B1 - System comprising a key, which can not be copied, and a lock for such a key - Google Patents

Abstract

The lock cylinder has a toothed edge key (1). One of the edges (1b) contains a series of protrusions and recesses forming a combination with tumbler pins (14) spring-loaded inside a stator (2) and rotor (3) which form part of the cylinder. A blind recess (7) in the untoothed edge (1a) accommodates a relatively strong compression spring (9) and a security tumbler pin (8) moving between extended and retracted positions. When the correct key is inserted, this pin is radially aligned and in contact with a mating pin (10) in a seat in the stator via the opening (13) in a plate (12) inserted in the rotor. The thickness of the plate is equal to the difference between the radii of the untoothed edge (4) and that (5) of the outside of the rotor. In the lengthwise direction, the position of the pins does not coincide with that of the tumbler pins (14) of the main combination.

Description

The invention relates to a lock system with a Lock cylinder and a key in the preamble of Claim 1 mentioned type.

In such a lock system, the key has one Shank with at least one smooth or toothless longitudinal edge and in particular with a toothed longitudinal edge on, the toothed longitudinal edge with depressions and / or projections is provided, the key the castle secret in connection with respective sentences of Tumblers and counter tumblers that are available in Spring preloaded inside the stator and rotor of the locking cylinder are. In this way, in the absence of the Key these counter locking pins over the rotary level of the Away from the rotor, preventing the opening rotation, while inserting the correct key into the Key channel of the rotor the sets of tumblers and Retaining pins are rearranged so that the parting line between the tumbler pin and the counter tumbler pin of each set in accordance with the plane of rotation of the rotor lies, so that its opening rotation is made possible.

With these keys, it is desirable to have any additional ones Introduce condition to be met at the same time must, like the castle secret, so that it is as difficult as it is possible to leave the key outside the range of the to imitate the actual manufacturer.

DE-A-3517660, from which the preamble of claim 1 is based, shows a way of training such additional condition by means of an additional safety tumbler pin, the one with each one in the stator or housing security counter pin located in the interacts in the same way as the sets of tumbler pens and main combination counter pins. Here will be a key with a shaft with at least one toothless Longitudinal edges used, the one having the depressions Surface opposite to the toothless longitudinal edge Long edge or at least one of the broad sides of the Shaft is. There is a blind hole in the toothless longitudinal edge arranged in a compression spring and one through this further safety tumbler pin biased towards the outside is arranged. When inserting the correct key presses into the key channel of the rotor of the locking cylinder Security tumbler pin of the key the security tumbler pin of the rotor against the pretensioning force of the Stator arranged safety counter pin in a such a position that the dividing line between the safety tumbler pin the rotor and the safety counter pin of the stator aligned with the outer circumference of the rotor is so that its rotation is released. Here is the Width of the key (in the diametrical direction of the rotor) opposite conventional keys around the radial length of the in the Rotor arranged safety tumbler pin reduced.

The invention has for its object a lock system described type to create that the insertion of one or several safety tumbler pins for non-counterfeiting allows in the smooth or toothless edge of the key, being the problems discussed above have been eliminated.

This object is achieved by the lock system specified in claim 1 solved. Advantageous further developments of the lock system result from the subclaims.

In the lock system according to the invention is in the key the distance between its theoretical center of rotation and its toothless longitudinal edge, i.e. the radius the toothless edge, smaller than the outer radius of the rotor, and there is at least one blind recess in this toothless edge with a relatively strong first compression spring and one Safety tumbler pin is formed, the projecting and retracted positions with respect to this blind recess according to the respective states of expansion and contraction the spring can take. If the key with the correct lock secret is used Safety tumbler pin without interposing one in the Rotor arranged tumbler pin in the radial direction and in contact with a security lock pin aligned, which is inserted into a seat of the stator and through a second relatively weak compression spring is preloaded, wherein this locking pin protrudes in this seat and withdrawn positions according to the relaxed or can assume the compressed state of the second spring. The contact between the safety tumbler pin of the Key and the stator safety lock pin takes place through an opening in an additional plate is formed, which is inserted into the rotor, the Thickness of this additional plate is equal to the difference between the radius of the toothless edge of the key and the outer radius of the rotor, the safety tumbler pins in the longitudinal direction at positions that are not with the Sets of tumbler pins and counter tumbler pins of the Main or opening lock secret coincide.

The result of this new system is when the system is plugged in State of the key in the key channel of the rotor a radial difference or a radial clearance in which the additional plate is used, which gives the material thickness that is required is so that the rotation lock over one or more Security lock pins can result in one Seat are arranged in the stator and in combination with respective safety tumbler pins of the toothless edge 5 of the key interact through respective openings, the in the additional plate in a lengthwise direction with the sets of tumbler pins and counter tumbler pins of the Main combination of the lock secret of the lock cylinder are not aligned.

The safety tumbler pin preferably has a protruding one Head and one inside the key End part on, with this head at its junction with the end part has a recess that a support for the corresponding end of the first spring results.

The recess is preferably conical.

This enables a gain in the axial stroke, available for the safety tumbler pin which is particularly advantageous when you have the tight space that is available in these cases.

For this purpose, the safety counter pin also indicates a projecting head and an inner end part, this head at its junction with the end part has a recess that supports the respective End of the second spring results.

In the drawings is a preferred embodiment of the Lock system shown that the property of a mere has illustrative and non-limiting example.

Figure 1 is a perspective view of a Key according to the invention in a position before insertion into a corresponding locking cylinder 2, 3.

FIG. 2 shows an enlarged cross section of an in a cylinder inserted key along the line 2-2 according to FIG. 1.

Figure 3 is a top plan view of the Additional plate 12, i.e. the top view of the circumference of the rotor 3 when this additional plate 12 is inserted into the rotor 3.

Figure 4 is a longitudinal profile view of the additional plate 12, which corresponds to Figure 3.

Figure 5 is a sectional view taken along the Line V-V indicated in Figure 3.

Figure 6 shows the detail VI, the is surrounded by dash-dotted lines in Figure 2 and with greater clarity the structure of the inventive system as well the rotary release position between the safety locking pin and shows its counter pin.

Figure 7 is similar to Figure 6, but shows the Lock position for the counter pin after the key has been removed.

FIG. 8 shows the tumbler pin enlarged along with a partial cut that shows the conical recess shows.

FIG. 9 shows the counter locking pin on an enlarged scale with a partial section showing the recess.

1 .- verzahnter Schlüssel

1a.- glatte oder unverzahnte Längskante

1b.- verzahnte Längskante

2 .- Stator des Schließzylinders 2-3

3 .- Rotor des Schließzylinders 2-3

3a.- Schlüsselkanal des Rotors 3 für den Schlüssel 1

4 .- Radius der nicht verzahnten Kante

5 .- Außenradius des Rotors 3

6 .- Radialspiel

7 .- Blindausnehmung des Schlüssels 1

8 .- Sicherheits-Zuhaltungsstift

8a.- Kopf des Zuhaltungsstiftes 8

8b.- Endteil des Zuhaltungsstiftes 8

8c.- konische Ausnehmung des Zuhaltungsstiftes 8

9 .- erste Feder

10 .- Sicherheits-Gegenzuhaltungsstift

10a.- Kopf des Gegenzuhaltungsstiftes 10

10b.- Endteil des Gegenzuhaltungsstiftes 10

10c.- Aussparung des Gegenzuhaltungsstiftes 10

11 .- zweite Feder

12 .- Zusatzplatte

13 .- Öffnungen der Zusatzplatte 12

14 .- Haupt-Zuhaltungsstifte

15.- Haupt-Gegenzuhaltungsstifte

16 .- Feder

The following reference numbers are given in these figures:

1 .- key

1a.- smooth or toothless longitudinal edge

1b.- toothed longitudinal edge

2 .- Stator of the locking cylinder 2-3

3 .- Rotor of the locking cylinder 2-3

3a.- Key channel of the rotor 3 for the key 1

4 .- radius of the non-toothed edge

5 .- outer radius of the rotor 3

6 .- radial play

7 .- Blind recess of the key 1

8 .- Safety tumbler pin

8a.- Head of tumbler pin 8

8b.- End part of the tumbler pin 8

8c.- conical recess of the tumbler pin 8

9 .- first spring

10 .- Safety lock pin

10a.- Head of the counter pin 10

10b.- End part of the counter pin 10

10c.- recess of the counter-locking pin 10

11 .- second spring

12 .- additional plate

13 .- openings of the additional plate 12th

14 .- main tumbler pins

15.- Main counter pin

16 .- spring

EXPLANATION OF A PREFERRED EMBODIMENT

With regard to the drawings and reference numbers already mentioned is a preferred embodiment in the accompanying drawings of the new inventive system of an unimaginable one Key and its corresponding locking cylinder shown.

The key according to the invention is a toothed key 1, the one with a lock cylinder 2-3 with European format cooperates. Are on its smooth or toothless edge one or more safety tumbler pins in the shaft of the key 1 8 used (in Figure 1 are two such Tumbler pins are provided which are intended to be used with to cooperate with the respective security locking pins 10, the in the stator or the housing 2 of the lock cylinder 2-3 are inserted as soon as the key 1 in the Key channel of the rotor 3 was used by a Broaching is made.

In the new system, when the key 1 is inserted is the distance between its theoretical center of rotation and its toothless edge 1a, i.e. the radius 4 the not toothed edge, smaller than the outer radius 5 of the rotor 3, the key in its non-toothed edge 1a at least a blind recess 7 with a relatively strong first compression spring 9 and a safety tumbler pin 8 has the protruding and depressed positions with respect to the blind recess 7 corresponding to the respective Cases of relaxation and compression of the first Spring 9 has. If the key 1 with the right combination is inserted, this safety tumbler pin 8 in the radial direction and in contact with a safety locking pin 10 aligned in a seat of the Stator 2 used and by a second relatively weak Compression spring 11 is preloaded, this locking pin 10 protruding and retracting in this seat Positions corresponding to the case of expansion or contraction the second 11 and in contact between the Safety tumbler pin 8 and the safety tumbler pin 10 ingest through an opening 13 can, which is formed in an additional plate 12, which in the rotor 3 is inserted. The thickness of this additional plate 12 is equal to the difference between the radius 4 of the toothless Edge of the key and the outer radius 5 of the rotor. The Safety tumbler pins 8 and 10 are in the longitudinal direction arranged in positions that are not the same as those of the tumbler-counter tumbler sets 14, 15 of the main tumbler or the castle secret of the castle.

The operation of the system is that if the Key 1 is pulled out of each security lock pin 10 through its corresponding opening 13 (Figure 7) the security plate 12 is inserted through, whereby an additional rotation lock results in addition to that caused by tumbler pin-tumbler pin sets 14-15 is used to train the main castle secret with respect to the toothed edge of the shaft of the key 1 are determined. When a key is inserted with the correct toothing but not the safety tumbler pins 8 has in its smooth edge of the shaft, the main lock secret fulfilled, but there is still one Rotational blocking of the rotor 3 due to the safety locking pin 10. This will make the state of non-imitability achieved by a key that is through the mimicking the simple process of copying its gearing has become unusable due to the addition of the Safety tumbler pins 8, their complicated insertion can only be carried out in the area of the manufacturer. However, if the correct key 1 has been inserted, the result is in addition to fulfilling the castle secret regarding its interlocking the fact (Figure 6) that the safety tumbler pin 8 pushing back the safety lock pin 10 and the consequent release of the rotary movement of the rotor 1 causes, the first spring 9 stronger than the second spring is 11. When the rotor 3 is rotating it the additional plate 12, which at an appropriate time Main counter pin 15 holds in its combination because their openings 13 do not coincide with the positions that take the main counter hold pins 15.

The additional plate 12 shown in Figure 3 corresponds to a general one Configuration provided with five openings 13 however, in each case the number of safety tumbler pins match that in the toothless edge of the Key 1 are used.

Otherwise, this safety tumbler pin 8 (Figure 8) a projecting head 8a and an end portion 8b for internal Lead, with this head 8a at its junction with the end part 8b a preferably conical recess 8c has a support for the respective end of the first Spring 9 results. In this way, the one already mentioned Gain in terms of the possible axial stroke of the safety tumbler pin 8 within the low in this case Available space reached.

In the same way, the safety counter pin 10 a projecting head 10a and an end portion 10b for internal guidance, with this head 10a at its junction has a recess 10c with the end part 10b, one support for the corresponding end of the second Spring 11 results.

Having the nature of the present invention as well as its industrial embodiment has been sufficiently described just add that it is in its entirety and its components is possible, changes in shape, the materials and the arrangement within the framework of the Perform invention, as far as these changes the basic idea do not leave.

Claims (4)

1. Lock system with a locking cylinder which has a stator (2) and within it a rotating rotor (3), and with a key (1) which has a key shaft with a smooth or untoothed long edge (1a) and in particular with a toothed long edge (1b) in which a series of projections and/or recesses is cut, whereby the key (1) forms a locking secret with regard to the particular sets of tumbler pins and counter tumbler pins (14-15) which are spring-loaded and form a main combination of the lock within the stator (2) and rotor (3) of lock cylinder (2-3), whereby the smooth or untoothed long edge (1a) of the key shaft has at least one blind cut-out (7) in which a first compression spring (9) and a security tumbler pin (8) spring-loaded by this is held in an outwards-projecting position relative to the blind cut-out (7), which when the first spring (9) is compressed, can take up a retracted position relative to the blind cut-out (7), whereby the security tumbler pin (8) is, when the correct key (1) is inserted into the key channel (3a) of the lock cylinder (2-3), aligned in a radial direction with a security counter tumbler pin (10) inserted into a seat (82) of the stator (2), which is preloaded by a second compression spring (11) which is weaker than the first compression spring (9), whereby the security counter tumbler pin (10) can, from the seat (82) in the stator, take up a rotation-blocking position in an opening (13) of the rotor and a withdrawn release position in the seat (82) corresponding to the relaxation or compression of the second compression spring (11) and whereby the security tumbler pin (8) of the correct key can push back the security counter tumbler pin (10) into its release position, characterised in that the clearance between the theoretical pivot point of rotation of the key shaft and its smooth or untoothed edge (1a), i.e. the radius (4) of the untoothed edge, is less than the extemal radius (5) of the rotor, that an additional plate (12) aligned with the opening (13) of the rotor (3) is inserted into the rotor (3), whereby the thickness of this plate (12) is equal to the difference between the radius (4) of the untoothed edge of the key and outer radius (5) of the rotor, and whereby the security tumbler pin (8) of the key (1) with the key (1) inserted through the opening (13) comes into contact with the security counter tumbler pin (10) and pushes this back into the release position, and that the security tumbler pin (8) and the security counter tumbler pin (10) are arranged at a position in the longitudinal direction which does not coincide with the position of the sets of tumbler pins and counter tumbler pins (14-15) of the main combination or of the locking secret of the lock.
2. Lock system in accordance with Claim 1, characterised in that the security tumbler pin (8) of the lock (1) has a projecting head (8a) and an inner guide end part (8b) and that the head (8a) has a cut-out (8c) at its connection point with the end part (8b) which provides a support for the corresponding end of the first compression spring (9).
3. Lock system in accordance with Claim 2, characterised in that the cut-out (8c) is tapered.
4. Lock system in accordance with one of Claims 1 to 3, characterised in that the security counter tumbler pin (10) of the stator has a projecting head (10a) and an inner guided end part (10b), and that the head (10a) has a cut-out (10c) at its connecting point with the end part (10b) which provides the support for the particular end of the second spring (11).

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