EP1582663A2 - Key for a lock cylinder - Google Patents

Abstract

The key has a shaft (2) with diagonally opposing inlay parts (6,7) on each of its flat sides. A row of locking recesses (3,4) is provided in the inlay parts. The locking recesses are preferably formed as grooves arranged at right angles to the longest dimension of the inlay parts.

Description

The invention relates to a key for a lock cylinder with a shaft and with a series of Locking recesses for actuating tumblers of Locking cylinder, wherein the locking recesses on a arranged associated with a key body member are.

Such a key is for example from DE 88 05 977 Ul known. This key is the series of Locking recesses formed by individual key teeth their number of the number of tumblers of the lock cylinder equivalent. The key body of the key is designed for this purpose as a tooth container and takes the row of key teeth. This is possible the key to an existing closing secret of Assemble lock cylinder.

The disadvantage of the known key is that it is very is complex and made up of very many consists of components to be connected. Furthermore, this is Key can not be used as a reversible key and that Closing secret of the known key is to the Key teeth easy to read. The well-known key is therefore very easy to copy by hand.

The invention is based on the problem of a key of the type mentioned above so that he has a especially easy production of a reversible key allows and has a high copy protection.

This problem is inventively achieved in that the shaft on its flat sides diagonally opposite each other each having an insert and that arranged the series of locking recesses on the insert are.

By this design is the key of the invention designed as a reversible key and requires two Insert a total of three components. This small number the components leads to a particularly simple manufacturability of the key according to the invention. The inserts can also be produced by machine and with provided a closing secret, which compared to the key teeth of the known key easily interchangeable is. The key according to the invention therefore has In addition, a particularly high copy protection.

The closing recesses could, for example, as in known keys are formed by drill bits. However, such drill bits are easy to copy. To complicate the copying of the invention Key contributes, however, if the locking recesses as transverse to the longest extension of the inserts arranged grooves are formed. This is the inventive Key not to be found on which Height of the grooves actuated the tumblers of the lock cylinder become. If you try the groove-shaped locking recesses to replicate with a drill bit already leads a small offset of the drill bit across the longest Extension of the shaft to a copying error, the one Closing the lock cylinder prevented.

The insert could, for example, on the outer jacket be attached to the shaft. This can be the However, just scan and copy locking recesses. A scan of the entire width of the locking recesses can be according to another advantageous development further complicate the invention when the shaft parallel to its longitudinal axis grooves for receiving the inserts Has. This contributes to the significant aggravation of the Copying the key according to the invention. Even if a key body with a groove available stands, the copy of the invention designed Key very difficult, because in the groove material for production the keyholes are applied got to. A simple milling out of material from one such key body is not thanks to the invention possible.

To further complicate the copying of the invention Schlüssel contributes, if at least some of the Closing recesses are lower than the groove in the Shaft.

The orientation of the closing recesses of the invention Key opposite the tumblers of the lock cylinder requires a particularly low effort, though the key body a stop for support the lock cylinder has.

The exact positioning of the inserts in the shaft requires according to another advantageous development the invention a particularly low cost when the Grooves for receiving the inserts to the free end of the Shank are open and each one stop for have the inserts.

A protrusion of the tips between the locking recesses from the grooves can be according to another advantageous Simply avoid development of the invention if the inserts in each area are lower than the grooves.

To disguise the privacy of the invention Key helps it when the locking recesses the inserts over straight flanks with each other are connected.

The assembly of the key according to the invention designed Especially easy if the inserts are a press fit in the groove of the shaft.

The permanent attachment of the insert in the shaft requires a particularly low cost when the insert is integrally connected to the shaft. Preferably, the cohesive connection is made by Bonding, for example by means of epoxy resin or by Solder.

Fig. 1

eine Draufsicht auf einen erfindungsgemäßen Schlüssel,

Fig. 2

eine Schnittdarstellung durch den erfindungsgemäßen Schlüssel aus Figur 1 entlang der Linie II - II,

Fig. 3

eine Schnittdarstellung durch den Schlüssel aus Figur 1 entlang der Linie III - III,

Fig. 4

eine Draufsicht auf einen Schlüsselgrundkörper des erfindungsgemäßen Schlüssels aus Figur 1,

Fig. 5

eine Schnittdarstellung durch den Schlüsselgrundkörper aus Figur 4 entlang der Linie V - V,

Fig. 6

eine Seitenansicht eines Einlegeteils des erfindungsgemäßen Schlüssels aus Figur 1,

Fig. 7

eine Seitenansicht einer weiteren Ausführungsform des Einlegeteils des erfindungsgemäßen Schlüssels aus Figur 1.

The invention allows numerous embodiments. To further clarify its basic principle, two of them are shown in the drawing and will be described below. This shows in

Fig. 1

a top view of a key according to the invention,

Fig. 2

3 is a sectional view through the key according to the invention from FIG. 1 along the line II-II, FIG.

Fig. 3

a sectional view through the key of Figure 1 along the line III - III,

Fig. 4

a top view of a key body of the key according to the invention of Figure 1,

Fig. 5

4 is a sectional view through the key body of FIG. 4 along the line V - V, FIG.

Fig. 6

1 is a side view of an insert of the key according to the invention from FIG. 1,

Fig. 7

a side view of another embodiment of the insert of the key according to the invention of Figure 1.

Figure 1 shows a trained as a reversible key Key with a Reide 1 and a shank 2. In each other opposite flat sides of the shaft 2 are in each case a series of locking recesses 3, 4 for tumblers arranged a lock cylinder, not shown. The locking recesses 3, 4 are each on with a key body 5 connected inserts 6, 7 arranged. The key body 5 has a provided for support on the lock cylinder Stop 11 on.

Figure 2 shows the key in a sectional view along the line II - II in the area of one of the inserts 6 of Figure 1. As Figure 3 in a sectional view through the key of Figure 1 along the line III - III shows, the closing recesses are 3, 4 as transverse to the longest extension of the inserts 6, 7 arranged Formed grooves. Furthermore, the figures show 2 and 3, that the key main body 5 each have a groove 8, 9 for receiving the inserts 6, 7 has. The grooves 8, 9 are open to the key tip. Through a in the key body 5 arranged stop 10th for the inserts 6, 7 becomes an intended orientation the closing recesses 3, 4 relative to the key body 5 generated.

Figure 4 shows the Schlüsselgrundköper 5 of the key from Figure 1. Figure 5 shows the Schlüsselgrundköper 5 from FIG. 4 shows a sectional view along the line V - V. It can be seen that the key body 5 for receiving almost arbitrarily shaped inserts 6, 7 is prepared. One of the inserts 6, 7 of the key is shown in Figure 6 in a side view. For the production of the key from FIG two identical inserts 6, 7 of Figure 6 in the grooves 8, 9 of the key body 5 used. The inserts 6, 7 can be pressed in the grooves 8, 9, soldered or glued.

FIG. 7 shows a further embodiment of the insert 6, 7 in a side view. It can be seen here that adjacent closing recesses 3, 4 are connected by straight flanks 12 with each other. Otherwise is the insert 6, 7 of Figure 7 like that Figure 6 constructed.

Claims (10)

Key for a lock cylinder with a shaft and with a series of locking recesses for actuating tumblers of the lock cylinder, the locking recesses being arranged on a component connected to a key body, characterized in that the shaft (2) is diagonally opposite each other on its flat sides Insertion (6, 7) and that the row of closing recesses (3, 4) on the insert (6, 7) are arranged. Key according to claim 1, characterized in that the closing recesses (3, 4) as transversely to the longest extension of the inserts (6, 7) arranged grooves are formed. Key according to claim 1 or 2, characterized in that the shank (2) parallel to its longitudinal axis has grooves (8, 9) for receiving the inserts (6, 7). Key according to at least one of the preceding claims, characterized in that at least some of the closing recesses (3, 4) are lower than the groove (8, 9) in the shaft (2). Key according to at least one of the preceding claims, characterized in that the key base body (5) has a stop (11) for support on the lock cylinder. Key according to at least one of the preceding claims, characterized in that the grooves (8, 9) for receiving the inserts (6, 7) to the free end of the shaft (2) are open and in each case a stop (10) for the inserts ( 6, 7). Key according to at least one of the preceding claims, characterized in that the inserts (6, 7) in each region are lower than the grooves (8, 9). Key according to at least one of the preceding claims, characterized in that the closing recesses (3, 4) of the inserts (6, 7) via straight flanks (12) are interconnected. Key according to at least one of the preceding claims, characterized in that the inserts (6, 7) have an interference fit in the grooves (8, 9) of the shank (2). Key according to at least one of the preceding claims, characterized in that the inserts (6, 7) are integrally connected to the shaft (2).

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