DK2870309T3

DK2870309T3 - Lock cylinder-key system

Info

Publication number: DK2870309T3
Application number: DK13744421.2T
Authority: DK
Inventors: Steffen Matschke
Original assignee: Assa Abloy Sicherheitstechnik Gmbh
Priority date: 2012-07-03
Filing date: 2013-06-24
Publication date: 2016-10-24
Also published as: ES2598166T3; WO2014005568A1; DE102012013422B4; EP2870309A1; DE102012013422A1; EP2870309B1

Description

The invention relates to a lock cylinder - key system, having a cylinder housing in which a cylinder core is rotatably mounted, which cylinder core for its part has a keyway accommodating an insertable key provided with a profiling of the lateral face, cooperating tumblers which consist of core pin and housing pin being provided in the cylinder core and in the cylinder housing, which tumblers sense the mechanical coding of the key and given appropriate coding allow a rotation of the cylinder core and thus enable a closing operation.

Lock cylinder - key systems of this kind are generally known.

Also known are finger pins which, controlled by features in the key profile, are rotatably mounted in the cylinder core and cooperate with a blocking strip movable radially between cylinder core and lock cylinder housing (DE 10 2009 026 117 Al) .

The object on which the invention is based is to provide an improved technical copying protection for such a system.

This object is achieved according to the invention in a lock cylinder - key system, having a cylinder housing in which a cylinder core is rotatably mounted, which cylinder core for its part has a keyway accommodating an insertable key provided with a profiling of the lateral face, cooperating tumblers which consist of core pin and housing pin being provided in the cylinder core and in the cylinder housing, which tumblers sense the mechanical coding of the key and given appropriate coding allow a rotation of the cylinder core and thus enable a closing operation. in that the keyway has a profiling corresponding to one of the lateral profilings of the key, in that the lateral profiling of the keyway has a clearance, into which projects a ball spring-mounted in the key, in that the last core pin in the cylinder core has a groove or cutout, with which a finger pin rotatably mounted in the cylinder core is engageable to maintain the core pin in its locking position, the finger pin being rotatable and disengageable from the groove of the core pin by the ball on insertion of the key.

Preferred developments will become apparent from the dependent claims and are further explained below.

The invention will be explained below with reference to the drawings, in which:

Fig. 1 shows schematically a key inserted partially into the lock cylinder.

Fig. 2a shows a section through the lock cylinder according to the line B-B in Figure 1 and

Fig. 2b shows a section according to A-A in Figure 1.

Shown here is the locking state, which would be cancelled on further insertion of the key.

In the key 2 is situated a spring-mounted ball 6, 7 which is seated in the first paracentric profile feature 8 and - in the exemplary embodiment shown here - can move upwards in the direction of the key back.

In a modification of this embodiment, this ball could also be arranged in the key side, provided that the paracentric profile assigned to the key profile in the cylinder core (keyway) can push the ball into the key shank on insertion of the key.

In the cylinder core 1 the last core pin 3 has a groove 9, in which a finger pin 4 mounted rotatably - parallel to the keyway - engages with the finger 12.

This pin has a second finger 10 which is located at the level of the first paracentric profile feature and is "hidden" by the latter.

The profile feature of the core is recessed at this location.

If the key is now inserted into the keyway, the paracentric profile of the cylinder core then pushes the ball into the key 1 until the clearance is reached and the ball is pushed downwards again by the spring 7. On further insertion of the key the ball carries along the second finger 10 of the finger pin 4 and rotates it a little until the core pin 3 is freed and can be pushed down by the key tip, the core pin being displaced so far that it, in cooperation with the customary housing pin, frees the cylinder core/cylinder housing separating plane and thus its hitherto locking position.

On removing the key, the finger pin 4 is rotated by the spring 5 back into the original position again.

If there is no ball in the key 2, or at the correct position, then the key 2 cannot be completely inserted into the keyway of the cylinder core 1, since the last core pin 3 is blocked by the finger pin 4 or its finger 12 and thus cannot be pushed down .

The advantage of the solution according to the invention is that it, on the one hand, constitutes a technical key copying protection and, on the other hand, can be integrated into existing systems.

Claims

A lock cylinder key system, with a cylinder housing in which a cylinder core can be rotatably mounted, which in turn has a key channel which accommodates a key which can be inserted and is provided with a profiling of the side surface where the cylinder core and in the cylinder housing are provided cooperating tumblers, consisting of core pin and housing pin, which read the mechanical coding of the key and, by appropriate coding, allow a rotation of the cylinder core and thus enable a locking process, characterized in that the locking channel has a profile corresponding to one of the key. (2) side profiling (8), that the side profiling (8) of the key channel has a clearance (11) such as a ball (6,7), which is resiliently mounted in the key, protrudes into the last core pin (3) of the cylinder core has a groove (9) or recess with which a finger pin (4) pivotally mounted in the cylinder core can be engaged to hold the core pin (3) in its locking position, where the finger pin (4) by inserting the key, it can be brought into rotation or out of engagement with the key of the core pin by the ball (6).

Lock cylinder key system according to claim 1, characterized in that the finger pin (4) at the upper end contacting the ball (6) has a finger (10) which projects into the profile of the key (2). .

Lock cylinder key system according to one of the preceding claims, characterized in that the finger pin (4) has at its lower end a finger (12) which can be engaged with the groove (9) at the core pin (3).

Lock cylinder key system according to one of the preceding claims, characterized in that the finger pin (4) can be brought out of engagement with the groove (9) against the force of a spring (5).

Lock cylinder key system according to one of the preceding claims, characterized in that the side profiling (8) is designed paracentrically.

Lock cylinder key system according to one of the preceding claims, characterized in that the ball (6) protrudes from the key back into the clearance (11).