EP1593800B1 - Locking device comprising a key and a lock cylinder - Google Patents

Abstract

The closure device (1) has a cylinder core (8) in a cylinder housing (G) with key channel (15) for fitting the key shaft of the key (3). An insert member (27) on the key shaft (19) has a shaft (28) and head (29) so that the shaft fits into an opening (26) in the key shaft (19) and the head (29) interacts with a complementing locking part (18) mounted in a bore (16) in the cylinder core. Independent claim describes key with insert member with shaft fixed in broad side opening (26) whilst a head (29) projects over the broad side face (21).

Description

The invention relates to a locking device according to the preamble of claim 1 and a key according to the preamble of claim 9.

A generic locking device or a generic key is of the US 5,784,910 described. The key has a key shank whose broad side has a broadside opening. In the broad side opening inserted a head and a shaft having insert, which cooperates with a supplementary locking part of the lock cylinder.

From the DE 35 42 008 C2 a closure device is known, wherein the insert is a recessed in the broadside surface disc, which protrudes with a segment-shaped portion of its surface over the edge of a rib of the key. The disk-shaped insert is arranged between two outgoing from the key chest locking notches. Accordingly, the bore of the cylinder core is also located between two core pins. When inserted, compliant key, the supplementary locking member is displaced by the segment-shaped portion of the disc-shaped insert so that its end facing away from the insert is located in the fulcrum of the cylinder core. As a result, a cushioned, arranged in a bore of the cylinder housing housing pin is displaced by the respective end so that the parting line between the supplementary locking member and the housing pin in the fulcrum of the cylinder core, which allows to rotate the cylinder core. If a key is used, although correctly arranges the tumbler pairs, but does not have the insert, the housing pin enters spring-loaded in the bore of the supplementary locking member and prevents a closing rotation.

From the EP 0161654 a lock cylinder is known in which supplementary locking pins cooperate with the broad side of a key shank.

From the EP 0607993 A1 complementary locking pins are provided which have smaller diameter portions which are hineinsteckbar in mutually different openings.

From the US 3,395,558 a lock cylinder is known in which a flat key can be inserted, which forms ribs whose notches scrape multi-part tumbler pins.

From the US 3,877,267 is a lock cylinder with a key known whose broad sides are scanned by tumbler pins.

From the US 4,823,575 a locking device is known in which in a narrow side opening of the key shank an insert piece inserted, which forms a head with a frusto-conical tip, which projects beyond the key narrow side.

The EP 1 106 756 A2 describes a key with mounted in wide side openings of the key shank balls.

The invention has for its object to make a generic locking device with an associated key manufacturing technology simpler and easier to unlock.

The problem is solved by the closure device specified in claim 1 or by the specified in claim 9 key.

According to such a configuration, a closing device of the type in question is given by manufacturing technology simple design.

This results in lower production costs. These advantages result without reducing the safety of the locking device. To control the guided in the bore of the cylinder core supplementary locking part now serves over the broad side surface of the key shank projecting head whose shaft is immovably anchored in the broad side opening of the key shank. The projection of the head over the broadside surface determines the displacement path of the supplementary locking part. Where the head protrudes over the broad side surface of the key shank, the keyway has a groove extending from it. This is adapted to the contour of the head. The groove does not need to be worked over the entire length of the keyway, starting from the insertion side ago. It is sufficient such a degree that the head displaces the supplementary locking part when inserting the key in the unlocked position. As a result of the shank introduced into the width opening of the key shank, essentially the key shank is not weakened so that, despite the arrangement of an insert piece in the key shank, a great stability of the same is realized. A further manufacturing simplification and therefore saving on manufacturing costs results from the fact that the supplementary locking part is a ball. With appropriate alignment of the supplementary locking member or ball receiving bore then the ball always has the desire to roll in the direction of the key channel into the region of the local groove for the head of the introduced into the key shank shank. The opening of the lock cylinder according to the Schlagschlüsselmethode is therefore largely unsuccessful. In detail, according to the invention, the procedure is such that the ball can be displaced from the head of the insert within the bore designed as a radial bore into an alignment position with the cylinder core circumferential surface. A key whose broad side surface is not surmounted by such a head, so can not control the ball to the escape position to the cylinder core peripheral surface. The safety value of the locking device is further increased by the fact that the radial bore is located in the same cross-sectional plane of the cylinder core as a tumbler, so that a housing pin of a Kernstift and housing pin existing Zuhaltungsstiftpaares is caught in a key with missing insert in the radial opening. An additional cushioned housing pin, which cooperates with the spherical supplementary locking part, can be omitted accordingly. When a proper key, which has the insert, is brought in the key insertion position of the head of the insert to the escape position to the cylinder core peripheral surface. This prevents that during the closing rotation of the lying in the same cross-sectional plane housing pin can enter into the radial bore. The closing rotation is not affected. But missing on a key such a head, it can be done by means of the key, although all tumbler pin pairs according to regulations, only a limited closing rotation. The limitation is that the relevant tumbler pin dips into the radial bore and thereby displaces the ball in the inward direction. The key is thus trapped, and the closing rotation can not continue. It is simple in terms of manufacturing technology if the insert is a screw, a rivet, in particular a rivet or nail, in particular a notched nail. It is thus always ensured that the recessed into the broad side opening insert remains in its proper position. It proves to be particularly favorable that the broad side opening of the key shank is a through hole. This can be generated easily and quickly. By the end face of the shaft of the insert is aligned with the opposite broad side surface, this results in a continuous smooth surface. In order not to reduce the number of possible permutations, the wide-side opening is arranged so far away from the key-chest that it lies outside the key-bridge notches. The key for the locking device is characterized in that the insert piece has a shaft firmly inserted into the broad side opening and a head projecting over the broad side surface. A further obfuscation component is preferably realized in that in the broad side several, in particular in Schlüsselschafterstreckungsrichtung one behind the other broad side openings are provided, which can be optionally equipped with inserts. According to the number of inserts used also has the lock cylinder at the relevant points the supplementary locking parts. The variety of variations in a key for a closing device can be increased by heads of one or more insert pieces that protrude beyond both wide side faces of the key shank facing away from each other. There is the possibility that an insert piece forms two heads pointing away from each other. Each head is always assigned its own supplementary blocking part. The embodiment of the invention is also suitable for locking systems, which include lock cylinder and associated keys with hierarchical closure, with a parent key at least one, preferably more inserts and at least one subordinate key has no insert. By means of the parent key all supplementary locking parts of the subordinate lock cylinders are properly controlled during closing operation. The subordinate key, on the other hand, is unable to close any superordinate lock cylinder because of missing inserts. To reach by means of the parent key all supplementary lock parts, the plurality of lock cylinder Schließkanalwandungsprofile on the entrance of the head of the insert, which have a different depth. The Schließkanalwandungsprofile can be created by sections of extending in the cylinder core longitudinal direction bores. After drilling, the clearing of the keyway takes place, in such a way that grooves are formed through the remaining remainder of the holes, which are traversed by the head of the insert when inserting the key.

Fig. 1

in perspektivischer Darstellung eine aus Schlüssel und Schließzylinder bestehende Schließvorrichtung,

Fig. 2

einen Querschnitt durch den Schließzylinder auf Höhe eines Zuhaltungsstiftpaares und eines Ergänzungssperrteils,

Fig. 3

einen Ausschnitt der Figur 2 im Bereich des Zylinderkerns,

Fig. 4

einen Querschnitt durch den Schlüsselschaft auf Höhe eines Einsatzstückes,

Fig. 5

in Einzeldarstellung eine Draufsicht auf den Zylinderkern,

Fig. 6

in Einzeldarstellung eine Seitenansicht des Schlüsselschaftes mit mehreren hintereinander angeordneten Breitseitenöffnungen,

Fig. 7

eine der Figur 3 vergleichbare Darstellung jedoch bei eingestecktem Schlüssel und dabei vom Einsatzstück radial auswärts verlagertem Ergänzungssperrteil,

Fig. 8

die Folgedarstellung der Figur 7, wobei der Zylinderkern derart verdreht ist, dass das Ergänzungssperrteil dem Gehäusestift gegenüberliegt,

Fig. 9

eine der Figur 7 vergleichbare Darstellung, jedoch bei einem eingesteckten Schlüssel, an welchem das das Ergänzungssperrteil verlagernde Einsatzstück fehlt,

Fig. 10

die Folgedarstellung der Figur 9, und zwar bei mittels des Schlüssels gedrehtem Zylinderkern in der Stellung, in welcher der Gehäusestift in die Radialbohrung eingreift und unter Erzielung einer Drehsperre des Zylinderkerns und Fangen des eingesteckten Schlüssels,

Fig.11

einen Querschnitt durch den Schlüsselschaft, wobei ein nicht zur Erfindung gehörendes Einsatzstück eingesetzt ist,

Fig. 12

ebenfalls einen Querschnitt durch den Schlüsselschaft, wobei das erfindungsgemäße Einsatzstück zwei voneinander wegweisende Köpfe ausbildet,

Fig. 13

einen weiteren Querschnitt durch einen Schlüsselschaft, bei welchem die erfindungsgemäßen Einsatzstücke, bezogen auf die Schlüsselbrust, einen unterschiedlichen Abstand haben und wobei die Köpfe gegenüberliegenden Breitseitenflächen zugeordnet sind, und

Hereinafter, several embodiments of the invention will be explained with reference to the drawings. It shows:

Fig. 1

in a perspective view of a key and lock cylinder existing closing device,

Fig. 2

a cross section through the lock cylinder at the height of a tumbler pair and a supplementary locking part,

Fig. 3

a section of the FIG. 2 in the area of the cylinder core,

Fig. 4

a cross section through the key shank at the height of an insert,

Fig. 5

in a detail view a top view of the cylinder core,

Fig. 6

in a detail view a side view of the key shank with a plurality of broadside openings arranged one behind the other,

Fig. 7

one of the FIG. 3 Comparable representation, however, with the key inserted and thereby from the insert radially outwardly displaced supplementary locking part,

Fig. 8

the following presentation of the FIG. 7 wherein the cylinder core is twisted such that the supplementary locking member is opposed to the housing pin,

Fig. 9

one of the FIG. 7 comparable representation, but with an inserted key on which the supplementary locking part displacing insert is missing,

Fig. 10

the following presentation of the FIG. 9 in the case of the cylinder core rotated by means of the key in the position in which the housing pin engages in the radial bore and while achieving a rotational lock of the cylinder core and catching the inserted key,

Figure 11

a cross section through the key shaft, wherein a not belonging to the invention insert is used,

Fig. 12

likewise a cross section through the key shank, the insert according to the invention forming two heads pointing away from each other,

Fig. 13

a further cross section through a key shank, in which the insert pieces according to the invention, based on the key-chest, have a different distance and wherein the heads are associated with opposite broad side surfaces, and

Fig. 14 a representation according to Figure 11 a further embodiment of the invention.

The closing device designated as a whole with the number 1 includes a lock cylinder 2 and an associated key 3. In the embodiment, the lock cylinder 2 is designed as a profile half-cylinder. The latter has a circular-cylindrical housing section 4 with a flange section 5 aligned radially thereto. From the circular-cylindrical housing section 4, a cutout 6 reaching into the flange section 5 extends to receive a closing element 7.

In a known manner, the closing member 7 is seated on the inner end of a cylinder core 8. This is mounted in a core hole 9 of the circular cylindrical portion 4. In the longitudinal center plane of the cylinder housing G, a plurality of tumbler pin pairs P arranged one behind the other extend. Each tumbler pin pair P is composed of a core pin 10 and a housing pin 11. To accommodate the core pins 10 8 consecutive Kernstiftbohrungen 12 are provided in the cylinder core, which are aligned with housing pin bores 13 for receiving the housing pins 11. Load in the housing pin holes 13 arranged pin springs 14 the housing pins 11 in the direction of the core pins 10 such that the housing pins 11 protrude in its closed state einnehmendem lock cylinder with a portion of their length in the core pin holes 12 and thus form a turnstile for the cylinder core 8. The core pin holes 12 have a length which is slightly larger than the radius of the cylinder core 8, so that thereby the core pins 10 experience a stop limit.

In the longitudinal center plane predetermined by the core pins 10, the cylinder core 8 has a cross-sectional profiled key channel 15, formed from grooves and ribs. The keyway 15 extends from the cylinder core peripheral surface and has a length which is less than the diameter of the cylinder core eighth

At an obtuse angle to the core pin bore 12 at least one radial bore 16 is provided in the cylinder core 8, whose diameter is as large as that of the pin holes 12,13. In the embodiment, the cylinder core 8, as it has FIG. 5 shows three such radial holes 16 in a row. These radial bores 16 open above the inner ends of the core pins in the key channel 15. At the level of the mouth of the keyway 15 has a special Schließkanalwandungsprofil 17. The latter is designed like a circular arc. This closing channel wall profile is produced by producing an axial bore B, starting from the key insertion side of the cylinder core 8, before the key channel 15 is cleared. After clearing the keyway 15 then remains exclusively the Schließkanalwandungsprofil 17, in which the radial bore 16 opens.

How out FIG. 5 can be seen, the radial bores 16 extend in the cross-sectional plane at the level of the core pins 10th

How further FIG. 5 illustrated, only the farthest from the key insertion side radial bore 16 receives a supplementary locking member 18. Therefore, the Schließkanalwandungsprofil 17 extends to this core pin 10. If the supplementary locking member 18 of the second radial bore 16 assigned, then the Schließkanalwandungsprofil 17 could have a smaller depth, as in FIG. 5 is illustrated. Then the Schließkanalwandungsprofil ends between the second and third core pin, seen from the Schüsseleinsteckseite ago. It would be possible to associate the supplementary blocking part 18 with the first radial bore as well. Then the Schließkanalwandungsprofil 17 could have an even smaller depth, as also in FIG. 5 indicated by dash-dotted lines.

With respect to the supplementary locking member 18 is a ball having a diameter which corresponds to the inner diameter of the radial bore 16. Incidentally, the radial bores 16 are not completely drilled through to the keyway 15, so that the supplementary blocking member 18 can protrude into the keyway 15 only with a dome-shaped section. The keyway 15 facing inward end of the radial bore 16 forms a shoulder 16 ', which prevents the further entry of the supplementary locking member 18 in the keyway 15. In the installed state of the lock cylinder 2 has due to the inclined sloping course of the radial bore 16, the supplementary locking member 18 the desire to immerse in the keyway 15, see. FIG. 2 and 3 , Then, the spherical supplementary lock member 18 has a distance a from the core hole 9. The distance a of the opposite pole region of the ball ends near the broad side surface of the relevant Schlußkanalwand.

With regard to the key 3 is a flat key, consisting of a key shank 19 and a key handle 20. The cross-sectional profile of the key shank 19 corresponds to that of the key channel 15. In detail, the key shank 19 is the opposite broad side surfaces 21 and 22. These are connected by a key back 23 and a key breast 24. From the latter go out of the Schlüsselbrusteinschnitte 25 in the form of closing notches, which serve to classify the Zuhaltungsstiftpaare P.

In the illustrated first embodiment, the key shank 19 has three broad side openings 26, one behind the other in the key member extension direction, in the form of through holes. How out FIG. 6 it can be seen, the broad side openings 26 are provided so removed from the key chest 24 that they are outside of the Schlüsselbrusteinschnitte 25. Only one of the wide-side openings 26 is equipped with an insert 27 in this first embodiment. Again FIG. 6 can be seen, the broad side openings 26 extend between the Schlüsselbrusteinschnitten 25. The insert 27 is received by the widest remote from the key handle 20 broadside opening 26. Thus, then the insert 27 extends in inserted into the keyway 15 key 3 at the level of the supplementary locking member 18th

In the embodiment, the insert 27 is designed in the form of a semi-circular notched nail. This has a permanently driven into the broad side opening 26 shaft 28 and the broad side surface 21 superior, semi-circular shaped head 29. Off FIG. 4 In particular, it can be seen that the end face 30 of the shank 28 opposite the head 29 is aligned with the opposite broad side face 22. The semicircular head 29 corresponds to the course of the Schließkanalwandungsprofils 17. Accordingly, the key shank 19, which is provided on the insertion side with a key tip 31, are inserted into the keyway 15. In this case, the tumbler pin pairs P are displaced by the keyhole cuts 25 in such a way that the parting line between the core pins 10 and housing pins 11 lies at the level of the core bore 9. Further, by the head 29 of the Insert 27, the supplementary locking member 18, so the ball, displaced in the radial outward direction, to the cylinder peripheral surface, ie to the core hole 9, see. FIG. 7 , Now, the closing rotation of the cylinder core 8 can be performed. FIG. 8 shows a rotational intermediate position of the cylinder core, in which the supplementary locking member 18 is opposite to the housing pin 11. This spring-loaded can not dive into the radial bore 16 and affect the rotational displacement of the cylinder core 8.

According to FIGS. 9 and 10 is a key 3 'used, which corresponds to the key 3, but has no insert. The eingeteckte key 3 'thus does not displace the supplementary locking member 18, so that after a partial rotation of the cylinder core 8 of the respective housing pin 11 can dip into the radial bore 16, locks the rotary displacement and the key 3' captures.

Instead of as illustrated, the cylinder core 8 could form only a single radial bore 16. Also, the key shank 19 could have only a single opening 26 at the appropriate location. Accordingly, the Schließkanalwandungsprofil 17 would be incorporated only correspondingly far.

Since three radial bores 16 and three wide-side openings 26 and a deeper Schließkanalwandungsprofil 17 are provided in the embodiment, a greater possibility is given in terms of variation.

Thus, it is also possible to use the locking device as part of a locking system in which several lock cylinders and associated keys allow a hierarchical closure. It is then important to ensure that a parent key at least one, preferably several inserts 27 and at least one minor key has no insert.

FIG. 11 shows an example not belonging to the invention, in which the key shank 19 receives in such a broad side opening 26 such insert 27, in which the shaft 28 continues at its over the broad side surface 21 projecting end in a semicircular head 29. The opposite end face 30 of the shaft 28 is flush with the local broadside surface 22 from. It would be possible to design the insert 27 in such a way that it protrudes on both sides over the broad side surfaces 21, 22 and forms corresponding forces there. Then the keyway 15 would have to have corresponding Schlüsselkanalwandungsprofile 17 on both sides.

According to the second embodiment of the invention according to FIG. 12 is the insert 27 designed similar to that in the first embodiment. The shaft 28 projects beyond deviating with its opposite end 27 of the head there wide side surface 22. The respective end of the shaft 28 has a toothing 32, on which a separate, half-round shaped head 29 'is fitted in press fit. Accordingly, the associated lock cylinder has a correspondingly designed keyway form.

The third embodiment according to FIG. 13 differs from FIG. 4 in that now two inserts 27 are used in the form of semi-circular notched nails whose heads 29 abut opposite key broadside surfaces 21, 22. Then, with respect to the height offset of the inserts 27 provided to each other such that the distance between the inserts 27 to the key-chest varies. Accordingly, the key channel 15 is to be designed. This means that then the Schließkanalwandungsprofile must be arranged vertically offset one above the other.

The Fig. 14 shows a further embodiment of the invention. The broad side 22 of the key 3 has here a blind hole 26 with a bottom 26 '. The insert 27 also has a round head here, which rests on the broad side 22. The shaft 28 has a plurality of barb-like rings 32 surrounding the shaft. These rings have a sloping flank which terminates in an edge acting in the direction of exit of the shaft 28. The end face 28 'of the shaft 28 is slightly spaced from the bottom 26' of the blind hole 26. The insert can be made of stainless steel. The pine cone-like shape of the pin has an anti-fuse effect.

Claims (15)

1. Locking device (1) consisting of a key (3) and a lock cylinder (2), a cylinder core (8), which is mounted in a cylinder housing (G), comprising a key channel (15) for inserting a key shaft of the matching key (3), which key shaft (19) is able to displace tumbler pins (10) projecting into the key channel (15) in such a way that the cylinder core (8) is rotatable, the key shaft (19) comprising an insert (27) which cooperates with a supplementary locking part (18) mounted in a hole (16) of the cylinder core (8), the insert (27) comprising a shaft (28) and a head (29), the shaft (28) being inserted in a broad-side opening (26) of the key shaft (19) and the head (29) cooperating with a supplementary locking part (18), characterised in that the shaft (28) is immovably anchored in the broad-side opening (26) and the diameter of the semi-circular head (29), which projects above the broad-side face of the key shaft (19), is greater than the diameter of the shaft (28).
2. Locking device according to claim 1, characterised in that the supplementary locking part (18) is a sphere.
3. Locking device according to claim 2, characterised in that the sphere (18) is displaced inside the hole, which is configured as a radial hole (16), into a position flush with the peripheral surface of the cylinder core by the head (29) of the insert (27).
4. Locking device according to claim 3, characterised in that the radial hole (16) is located in the same cross-sectional plane of the cylinder core (8) as a tumbler pin (10, 11), in such a way that a housing pin (11) of a tumbler pin pair (P) consisting of a core pin (10) and a housing pin (11) is trapped in the radial hole (16) in the case of a key (3') lacking an insert (27).
5. Locking device according to any one of the preceding claims, characterised in that the insert (27) is a screw, a rivet, in particular a hollow rivet or nail, in particular a slotted nail.
6. Locking device according to any one of the preceding claims, characterised in that the broad-side opening (26) of the key shaft (19) is a through-hole.
7. Locking device according to one or more of the preceding claims, characterised in that the end face (30) of the shaft (28) of the insert (27) is flush with the opposing broad-side face (21 or 22).
8. Locking device according to any one of the preceding claims, characterised in that the broad-side opening (26) is arranged with spacing from the key front (24) in such a way that it is located outside the key front notches (25).
9. Key for a locking device according to one or more of the preceding claims, comprising a key shaft (19), the key shaft (19) comprising an insert (27), the insert (27) comprising a shaft (28) and a head (29), the shaft (28) being inserted in a broad-side opening (26) of the key shaft (19), characterised in that the shaft (28) is immovably anchored in the broad-side opening (26) and the diameter of the semi-circular head (29), which projects above the broad-side face of the key shaft (19), is greater than the diameter of the shaft (28).
10. Key for a locking device according to claim 9, characterised in that the key shaft (19) comprises a plurality of openings (26), in particular arranged in succession in the key shaft extension direction, which can selectively be fitted with inserts (27).
11. Key for a locking device according to either claim 9 or claim 10, characterised by heads (29, 29') of one or more inserts (27), which heads project above two faces (21, 22), which face away from one another, of the key shaft (19)
12. Key for a locking device according to any one of claims 9 to 11, characterised in that an insert (27) forms two heads (29, 29') which face away from one another.
13. Key or locking device according to any one of claims 9 to 12, characterised in that the shaft is inserted in the opening (26), which in particular is configured as a blind hole, in a barb-like manner.
14. Locking device according to any one of claims 1 to 8, characterised by a plurality of lock cylinders (2) and associated keys (3) with hierarchical locking, a superordinate key comprising at least one, preferably a plurality of insert(s) (27) and at least one subordinate key not comprising an insert (27).
15. Locking device according to claim 14, characterised in that the plurality of lock cylinders (2) comprise lock channel wall profiles (17) for entry of the head (29) of the insert (27), which lock channel wall profiles have different depths.

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