EP1593800A2 - 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 key and lock cylinder existing Locking device, wherein a stored in a cylinder housing Cylinder core has a keyway for inserting the key, which key is capable of protruding into the keyway To move tumbler pins such that the cylinder core in a inserted, matching key is rotatable, wherein the key shaft a the broadside surface associated insert, which with an in cooperates a bore of the cylinder mounted supplementary part.

A locking device of the type in question is known from the DE 35 42 008 C2, wherein the insert one in the broad side surface taken in slice with a segmental section of her Surface protrudes beyond the edge of a rib of the key. The Disc-shaped insert is between two of the key chest outgoing closing notches arranged. Accordingly, the Bore of the cylinder core also between two core pins. at inserted, regulatory key is by the segment-shaped Part of the disc-shaped insert the supplementary locking part so shifts that its end facing away from the insert in the fulcrum of the Cylinder core lies. As a result, by the end in question cushioned, arranged in a bore of the cylinder housing Housing pin shifted so that the parting line between the Supplementary locking part and the housing pin in the fulcrum of the cylinder core is what makes it possible to turn the cylinder core. Becomes a key although it correctly arranges the tumbler pairs, but not has the insert, the housing pin occurs spring loaded in the bore the supplementary lock part in and prevents a closing rotation.

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

From EP 0607993 A1 supplementary locking pins are provided which have smaller diameter portions which are different from each other Openings are hineinsteckbar.

From US 3,395,558 a lock cylinder is known in which a Flat key is insertable, which forms ribs, its notches Scan multi-part tumbler pins.

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

The object of the invention is the object of a generic locking device manufacturing technology easier and to make unlocked.

This task is initially and essentially in a closing device solved with the features of claim 1, wherein it is pointed out that the insert a fixed in a broad side opening of the key shaft introduced shaft and a protruding over the broadside head having.

The objects of the further claims are described below in relation to the The subject matter of claim 1 explained, but can also in their independent formulation.

According to such a configuration is a closing device in question Stated type of manufacturing technology simple design specified.

This results in lower production costs. These advantages arise without reducing the safety of the locking device. To control the in the bore of the cylinder core guided supplementary lock part is now the Head protruding over the broad side surface of the key shank, the shaft thereof immovably anchored in the broad side opening of the key shank. Of the Overhang of the head over the broadside surface determines the Displacement path of the supplementary blocking part. Where the head over the Wide side surface of the key shaft protrudes, the keyway has a from him outgoing groove. This is adapted to the contour of the head. The groove does not need the full length of the key channel, starting from the Insert side, to be incorporated. It suffices such a measure that the Head the supplementary locking part when inserting the key in the Unlocked displaced position. Through the into the wide opening of the Key shank introduced shaft is essentially the Key shaft not weakened, so that despite arrangement of an insert piece in the key shaft a great stability of the same is realized. Another Manufacturing simplification and therefore saving on manufacturing costs results in that the supplementary blocking part is a ball. With appropriate Alignment of the supplementary locking part or ball receiving bore then the ball always has the endeavor, in the direction of the key channel too roll into the area of the local groove for the head of the Key shank introduced shaft. The opening of the lock cylinder after The Schlagschlüsselmethode is therefore largely unsuccessful. In detail is here According to the invention proceeded so that the ball from the head of the Insert within the designed as a radial bore hole into a Escape to the cylinder core peripheral surface is displaced. A key, whose broad side surface is not surmounted by such a head, so can not, the ball to the escape position to the cylinder core peripheral surface too Taxes. The safety value of the locking device is further characterized increases that the radial bore in the same cross-sectional plane of the Cylinder core lies like a tumbler, making a case pin one out Kernstift and housing pin existing Zuhaltungsstiftpaares at a Key is caught with missing insert in the radial opening. One additional cushioned housing pin, which with the spherical Supplementary locking member cooperates, may be omitted accordingly. at The prescribed key, which has the insert is in the Schlüsseleinsteckstellung the head of the insert to the escape position for Cylinder core peripheral surface brought. This will prevent during that the closing rotation of the lying in the same cross-sectional plane housing pin can enter the radial bore. The closing rotation is not impaired. But missing on a key such a head, so can by means of of the key, although all tumbler pairs in accordance with regulations arranges, only a limited closing rotation be made. The Limitation takes place in that the relevant tumbler pin in the Plunges radial bore and thereby displaces the ball in the inward direction. The key is thus trapped, and the closing rotation can not continue become. Manufacturing technology is simple, if the insert a Screw, a rivet, in particular rivet or nail, in particular notched nail is. It is thus always guaranteed that in the broadside opening recessed insert remains properly in its position. Especially it proves to be favorable that the broad side opening of the key shank a through hole is. This can be generated easily and quickly. By the end face of the shaft of the insert with the aligned opposite broad side surface results in this one continuous smooth surface. To the number of possible permutations not To reduce, the broad side opening is so far away from the key-chest arranged to lie outside the keyhole incisions. Of the Key for the locking device is characterized in that the Insert a firmly introduced into the broad side opening shaft and has a projecting over the broad side surface head. Another Abdeckierungskompenente is realized according to the invention that in the Broadside several, especially in Schlüsselschafterstreckungsrichtung successive broadside openings are provided, which optionally be equipped with inserts. According to the number of inserted insert also has the lock cylinder to the relevant Make the supplementary lock parts. Increasing the variety is a variety Key for a closing device through both, from each other pioneering broadside surfaces of the key shank projecting heads of one or several inserts. There is a possibility that one insert two forming pathbreaking heads. Each head is always its own Assigned to supplementary block. The embodiment of the invention is suitable Furthermore, for locking systems, which lock cylinder and associated Keys with hierarchical closure include, with a parent Key at least one, preferably several inserts and at least a subordinate key has no insert. By means of the parent key are all supplementary lock parts of the Subordinate lock cylinder when closing operation according to regulations modulated. The subordinate key, on the other hand, is unable to do so Insert pieces no parent lock cylinder to close. To use the parent key to reach all supplementary lock parts, have the multiple lock cylinder Schließkanalwandungsprofile on Entry of the head of the insert, which have a different depth. The Schließkanalwandungsprofile can sections of in the form of Cylinder core longitudinal direction extending holes are created. After this Drilling takes place the clearing of the keyway, in such a way that through the remaining remainder of the bores are formed grooves, which of the Run through 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 Einsatzstück gemäß einer zweiten Ausführungsform eingesetzt ist,

Fig. 12

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

Fig. 13

einen weiteren Querschnitt durch einen Schlüsselschaft, bei welchem die 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 Figure 2 in the region 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

a representation comparable to Figure 3, however, with the key inserted and while the insert radially outwardly displaced supplementary locking part,

Fig. 8

the following illustration of Figure 7, wherein the cylinder core is rotated such that the supplementary locking member is opposite to the housing pin,

Fig. 9

7 shows a representation comparable to FIG. 7, but with an inserted key on which the insertion piece displacing the supplementary blocking part is missing,

Fig. 10

the following illustration of Figure 9, namely in the position rotated by means of the key cylinder core in the position in which the housing pin engages in the radial bore and to obtain a turnstile of the cylinder core and catching the inserted key,

Figure 11

a cross section through the key shaft, wherein an insert is used according to a second embodiment,

Fig. 12

also a cross section through the key shank, wherein the insert piece forms two heads pointing away from each other,

Fig. 13

a further cross section through a key shank, wherein the inserts, with respect to the key-chest, have a different distance and wherein the heads are associated with opposite broad side surfaces, and

Fig. 14 is a representation according to Fig.11 of another embodiment.

The closing device designated as a whole with the number 1 includes a Lock cylinder 2 and an associated key 3. When Embodiment, the lock cylinder 2 is designed as a profile half cylinder. The latter has a circular cylindrical housing portion 4 with radially thereto aligned flange 5. From the circular cylindrical housing section 4 goes to a reaching into the flange portion 5 cutout 6 from Recording a closing member 7th

In a known manner, the closing member 7 is seated on the inner end of a Cylinder core 8. This is in a core hole 9 of the circular cylindrical Section 4 stored. In the longitudinal center plane of the cylinder housing G extend several consecutively arranged Zuhaltungsstiftpaare P. Each tumbler pin pair P consists of a core pin 10 and a Housing pin 11 together. To accommodate the core pins 10 are in Cylinder core 8 consecutive core pin holes 12 provided which with housing pin holes 13 for receiving the housing pins 11th aligned. 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 in its closed state einnehmendem lock cylinder with a part protrude their length in the core pin holes 12 and thus a Make 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 characterized the core pins 10 experience a stop limit.

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

At an angle to the core pin hole 12 is at least one in the cylinder core 8 Provided radial bore 16 whose diameter is as large as that of the Pin holes 12,13. In the embodiment, the cylinder core 8, As is apparent from Figure 5, three such radial bores 16 in One behind the other location. These radial bores 16 open above the inner Ends of the core pins in the keyway 15. At the level of the mouth has the keyway 15 a special Schließkanalwandungsprofil 17. The latter is designed like a circular arc. This closing channel wall profile is produced in that, prior to clearing of the keyway 15, an axial bore B, starting from the key insertion side of the cylinder core 8 is generated. After clearing the key channel 15 then remains exclusively the Schließkanalwandungsprofil 17 are, in which the radial bore 16th empties.

As can be seen from Figure 5, the radial bores 16 extend in the Cross-sectional plane at the height of the core pins 10th

As further illustrated in FIG. 5, only the furthest away from the key insertion side lying radial bore 16 a supplementary locking part 18 on. Therefore, the Schließkanalwandungsprofil 17 extends to this core pin 10. If the supplementary blocking part 18 is assigned to the second radial bore 16, so the Schließkanalwandungsprofil 17 could have a smaller depth, such as this is illustrated in FIG. Then the Schließkanalwandungsprofil ends between the second and third core pins, from the bowl insertion side seen. It would be possible, the supplementary blocking part 18 and the first Assign radial bore. Then the Schließkanalwandungsprofil 17th have an even smaller depth, as also in Figure 5 with dash-dotted lines is indicated.

With respect to the supplementary lock member 18 is a ball with a Diameter, which the inner diameter of the radial bore 16th equivalent. Incidentally, the radial bores 16 are not complete until Keyway 15 drilled through, so that the supplementary locking member 18 only with a dome-shaped portion can protrude into the keyway 15. The key channel 15 facing inward end of the Radial bore 16 forms a shoulder 16 ', the further entry of the Supplementary locking member 18 is prevented in the keyway 15. In the installed state of the lock cylinder 2 has due to the inclined sloping course of Radial bore 16, the supplementary locking member 18, the endeavor in the To immerse key channel 15, cf. Figure 2 and 3. Then the spherical Supplementary blocking part 18 a distance a to the core hole 9. The the distance a opposite pole of the ball ends near the broad side of the relevant Schlußkanalwand.

Concerning the key 3 is a flat key, consisting from 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 shaft 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 the Schlüsselbrusteinschnitte 25 go out in the form of closing notches, which to arrange the Zuhaltungsstiftpaare P serve.

In the illustrated first embodiment, the key shank 19 has three consecutive key-key extension directions Broad side openings 26 in the form of through holes. As shown in FIG. 6 it can be seen, the broad side openings 26 are of the key bridge 24th provided that they lie outside the keyhole notches 25. Only one of the broadside openings 26 is in this first embodiment equipped with an insert 27. As can be seen from FIG. 6, the broad side openings 26 extend between the Keyhole cuts 25. The insert 27 is furthest from the farthest away from the key handle 20 lying broadside opening 26th added. So then the insert 27 extends in the Key channel 15 inserted key 3 at the level of the supplementary locking part 18th

In the embodiment, the insert 27 is in the form of a semi-circular notched nail designed. This has a fixed in the wide side opening 26th driven shaft 28 and a broadside surface 21 superior, In particular, FIG. 4 shows, in particular, that the head 29 opposite end face 30 of the shaft 28 with the opposite broad side surface 22 is aligned. The semicircular head 29 corresponds to the course of the Schließkanalwandungsprofils 17th Accordingly, the key shaft 19 which insertion side with a key tip 31st is provided, are inserted into the keyway 15. It will be the tumbler pin pairs P are displaced by the keyhole cuts 25, that the parting line between the core pins 10 and housing pins 11 on Height of the core hole 9 is located. Further, by the head 29 of the Insert 27, the supplementary locking member 18, so the ball in the radial Outward direction shifted, up to the cylinder peripheral surface, so to to the core hole 9, cf. Figure 7. It can now be the closing rotation of Cylinder core 8 are performed. FIG. 8 shows a rotational intermediate position of the cylinder core in which the supplementary locking member 18 the housing pin 11th opposite. This spring-loaded not in the radial bore 16th dive in and affect the rotational displacement of the cylinder core 8.

According to Figure 9 and 10, a key 3 'is used, which the key 3 corresponds, but has no insert. The key 3 ' Accordingly, does not shift the supplementary locking member 18, so that after a Partial rotation of the cylinder core 8 of the respective housing pin 11 in the Radial bore 16, the rotary displacement locks and the Key 3 'begins.

Instead of as shown, the cylinder core 8 could only a single Form radial bore 16. Also could the key shaft 19 only one have only opening 26 at the appropriate location. Accordingly would be the Schließkanalwandungsprofil 17 only correspondingly far incorporate.

As in the embodiment, three radial bores 16 and three Broad side openings 26 and a deeper Schließkanalwandungsprofil 17th are provided with respect to the variation is a greater possibility given.

So there is also the possibility of the locking device as part of a Use locking system, in which several lock cylinder and assigned keys allow a hierarchical closure. It is then make sure that a parent key has at least one, preferably several inserts 27 and at least one minor Key has no insert.

FIG. 11 shows the second embodiment, in which the key shank 19 in a broad side opening 26 receives such insert 27, in which the shaft 28 at its over the broad side surface 21 projecting end in a semicircular head 29 continues. The opposite end face 30 of the shaft 28 is flush with the local broadside surface 22 from. It it would be possible to design the insert 27 so that this protrudes on both sides over the broad side surfaces 21, 22 and there corresponding Training forces. Then the key channel 15 would have to be on both sides have corresponding keyway wall profiles 17.

According to the third embodiment of Figure 12, the insert 27 is designed similar to that in the first embodiment. The shaft 28 dominates deviant with his the head 27 opposite end of the there wide side surface 22. The relevant end of the shaft 28 has a Teeth 32, on which a separate, semicircular shaped head 29 'is fitted in a press fit. Accordingly, the corresponding has Lock cylinder form a correspondingly shaped keyway.

The fourth embodiment according to FIG. 13 differs from FIG. 4 in that that now two inserts 27 used in the form of semi-circular notched nails are, whose heads 29 on opposite key broad side surfaces 21, 22nd issue. Then is at height offset of the inserts 27 to each other provided such that the distance of the inserts 27 to the key chest varies. Accordingly, the key channel 15 is to be designed. The means that then the Schließkanalwandungsprofile one above the other must be arranged offset in height.

Fig. 14 shows another embodiment of the invention. The broadside 22 of the key 3 here has a blind hole 26 with a bottom 26 '. The Insert 27 also has a round head here, on the broadside 22nd rests. The shaft 28 has a plurality of surrounding the shaft barb-like rings 32. These rings have a sloping edge, which ends in an acting in the exit direction of the shaft 28 cutting edge. The Front side 28 'of the shaft 28 is slightly off the bottom 26' of the blind hole 26 spaced. The insert can be made of stainless steel. The Pine-conical shape of the pin has an anti-fuse effect.

All disclosed features are essential to the invention. In the Revelation of the application is hereby also the disclosure of the associated / attached priority documents (copy of prior notification) fully involved, including for the purpose, features of this To include documents in claims of the present application.

Claims (15)

Locking device (1) consisting of key (3) and lock cylinder (2), wherein a cylinder core (8) mounted in a cylinder housing (G) has a key channel (15) for inserting a key shank of the matching key (3), which key shank (19 ) is capable of displacing tumbler pins (10) projecting into the keyway (15) in such a way that the cylinder core (8) is rotatable, the key shank (19) having an insert piece (27) which engages with a hole (10). 16) of the cylinder core (8) mounted complementary locking member (18) cooperates, characterized in that the insert (27) has a shaft (28) and a head (29), wherein the shaft (28) in an opening (26) of the key shank (19) inserted and the head (29) cooperates with a supplementary part (18). Locking device according to claim 1 or in particular according thereto, characterized in that the supplementary blocking part (18) is a ball. Locking device according to one or more of the preceding claims or in particular according thereto, characterized in that the ball (18) is displaced from the head (29) of the insert (27) within the bore formed as a radial bore (16) to an alignment position with the cylinder core peripheral surface. Locking device according to one or more of the preceding claims or in particular according thereto, characterized in that the radial bore (16) in the same cross-sectional plane of the cylinder core (8) as a tumbler pin (10, 11), so that a housing pin (11) of a core pin (16) 10) and housing pin (11) existing Zuhaltungsstiftpaares (P) at a key (3 ') with missing insert (27) in the radial bore (16) is caught. Locking device according to one or more of the preceding claims or in particular according thereto, characterized in that the insert (27) is a screw, a rivet, in particular rivet or nail, in particular notched nail. Locking device according to one or more of the preceding claims or in particular according thereto, characterized in that the broad side opening (26) of the key shank (19) is a through-bore. Locking device according to one or more of the preceding claims or in particular according thereto, characterized in that the end face (30) of the shank (28) of the insert piece (27) is aligned with the opposite broad side face (21 or 22). Locking device according to one or more of the preceding claims or in particular according thereto, characterized in that the broad side opening (26) is arranged so remote from the key-chest (24) that it lies outside the key-breast notches (25). Key in particular for a closing device according to one or more of the preceding claims 1 to 8, characterized in that the insert piece (27) has a shaft (28) fixedly inserted into the broad side opening (26) and a head projecting beyond the broad side surface (21, 22) (29, 29 '). Key for a locking device according to one or more of the preceding claims, characterized in that in the key shank (19) has a plurality, in particular in Schlüsselschafterstreckungsrichtung one behind the other openings (26) which can be optionally equipped with inserts (27). A key for a locking device according to one or more of the preceding claims, characterized by two heads (29, 29 ') of one or more insert pieces (27) projecting beyond two mutually facing surfaces (21, 22) of the key shank (19). Key for a closing device according to one or more of the preceding claims, characterized in that an insert piece (27) forms two mutually pioneering heads (29, 29 '). Key according to one or more of the preceding claims or in particular according thereto, characterized in that the shaft is barb-like in the opening (26), which is designed in particular as a blind hole inserted. Locking device according to one or more of the preceding claims or in particular according thereto, characterized by a plurality of lock cylinders (2) and associated keys (3) with hierarchical closure, wherein a higher-order key has at least one, preferably several inserts (27) and at least one subordinate key no insert (27). Locking device according to one or more of the preceding claims or in particular according thereto, characterized in that the plurality of lock cylinders (2) have Schließkanalwandungsprofile (17) for entry of the head (29) of the insert piece (27), which have a different depth.

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