EP1079052A1 - Lock cylinder - Google Patents

Abstract

The lock cylinder has a rotatable core (2) in a housing (1), a lock channel in the core for inserting a key with a transponder (12), an electronic blocking mechanism for selective making or release of a shape-locking joint between the core and housing and a code receiver (10, 11) for receiving the transponder signal. The core has an outer sleeve-shaped part (21, 22) transmissive for the transponder signal and the code receiver is fixed to the housing radially opposite the outer core part to receive the transponder signal.

Description

The invention relates to a lock cylinder with a a housing for optional locking or unlocking rotatable, having a lock bit, with a in the core arranged closing channel for the introduction of a a key having a transponder, with a electronic locking mechanism for optional generation or solution of a positive connection of the core with the housing and with one with the electronic locking mechanism connected code receiver for receiving the signals of the Transponders.

A lock cylinder of the above type is for example known from DE 196 03 320 A1. Here, the Core a component having the locking channel and one driver connected to the lock bit. That the Component with locking channel is made of metal and pot-shaped. For a non-rotatable form fit have the driver and the one having the locking channel Interlocking arms. The transponder is located yourself in the key's key and sends over electromagnetic waves a key-specific Code to one located on the front of the housing Code receiver. When the key is inserted into the The canal becomes the Reide and thus the transponder in brought a position close to the receiver. An advantage this design is that the code receiver has an immovable position in the lock cylinder. As a result, the locking cylinder does not require sliding contacts.

A disadvantage of the known lock cylinder is that Code recipient is easily accessible and therefore the Lock cylinders can be easily manipulated without a key can. Furthermore, the transponder has one from the receiver very large distance, so that the locking cylinder when Activate the locking mechanism a lot of electrical Energy needed.

The invention is based on the problem of a locking cylinder of the type mentioned in such a way that it has a particularly low energy consumption and that its manipulation is as difficult as possible.

This problem is solved according to the invention in that the nucleus a distant from the lock beard, for the signals of the Transponder permeable core outer part for Inclusion of one arranged in the shaft of the key Has transponders and that the code receiver for reception the signals of the transponder radially opposite the core outer part is fixed in the housing.

With this design, the code receiver is in one Tamper-proof location located within the housing. The housing of the lock cylinder according to the invention can be made of metal for its safety to further increase against manipulation. The code receiver stands radially outside of the by its arrangement Kerns the transponder inserted in the locking channel at a particularly short distance from each other. This has the lock cylinder according to the invention also a special low energy consumption.

The lock cylinder according to the invention can be particularly just adjust to a designated length if the Core an inner core part close to the lock bit with a has high strength and if the core inner part and the core outer part axially immovable and non-rotatable with each other are connected. This allows uniform Core outer parts used for locking cylinders of different lengths become.

The lock cylinder according to the invention has a special high resistance to an attempt to unlock by pulling the core on when the locking mechanism cooperates with the core inner part and if the core inner part has greater stability than that Core outer part. This design leads when pulling the Core to tear off the core outer part and thus too a whereabouts of the lock bit in its locked Position.

Inductive signals of the transponder can be according to one other advantageous development of the invention almost record undamped from the code receiver if that Inner core made of metal and the outer core made of plastic is made. This design can be also high torques from the core to the lock bit transfer.

The lock cylinder according to the invention can be particularly simply assemble when the core outer part and the core inner part have concentrically enclosing bundles.

The non-rotatable connection of the core outer part with the core inner part is designed according to another advantageous Further development of the invention is particularly constructive easy if the bundles at least in the radial direction a common recess for receiving a holding part exhibit.

The core outer part can be according to another advantageous development of the invention is particularly high Forces on the core inner part and then on the Lock bit transferred if several recesses are irregular are distributed over the scope of the core. By the irregular arrangement of the recesses over the circumference it is also ensured that the core outer part and the core inner part inevitably in the intended rotational position be installed aligned to each other.

To further simplify the assembly of the invention Lock cylinder helps when the recess is limited to the axis of rotation of the core and if the housing an opening for carrying the holding part into the Has recess.

The holding parts produce according to when the core is rotated another advantageous development of the invention a particularly low friction if the holding parts each have a round cross-section and with their Lateral surface facing the housing and if the housing is tubular in the area of the holding parts.

The holding parts can be advantageous according to another Further development of the invention simply from the recess remove if there is a separating edge between the bundles on the half of the core facing away from the axis of rotation Holding parts runs. With this design, the Hold parts opposite when the core outer part is twisted the core inner part pressed radially outwards and can be easily removed.

The arrangement of the separating edge in the area of the holding parts can be according to another advantageous development produce the invention simply by the fact that the federal government Inner core part radially within the collar of the core outer part is arranged.

The holding parts are designed according to another advantageous Development of the invention is particularly cost-effective, if they are designed as balls or pens are.

Fig.1

einen Längsschnitt durch einen erfindungsgemäßen Schließzylinder,

Fig.2

eine Schnittdarstellung durch den Schließzylinder aus Figur 1 entlang der Linie II - II.

The invention permits numerous embodiments. To further clarify its basic principle, one of these is shown in the drawing and is described below. This shows in

Fig. 1

a longitudinal section through a lock cylinder according to the invention,

Fig. 2

a sectional view through the lock cylinder of Figure 1 along the line II - II.

FIG. 1 shows a double-profile locking cylinder Lock cylinder with a housing 1 and one core 2 rotatably arranged therein. The core 2 has in one middle area a lock bit 3 and in his Each ends a closing channel 5, 6. In one of the Locking channels 5 is a key 4 with a 7 and a shaft 8 introduced. The bow 7 of the key 4 penetrates into a slot 9 of the core 2, so that the core 2 can be rotated by means of the key 4. Near the end faces of the housing 1 is one Code receiver 10, 11 arranged. The code receivers 10, 11 detect signals from those introduced in the closing channels 5, 6 Transponders 12 and route them to control electronics 13. The control electronics 13 is in the Closing channels 5, 6 protruding switches 14, 15 activated and determined from the signals of the transponder 12 the access authorization. Then the control electronics switch 13 according to the signals determined Locking mechanism 16. To release or create a Has a positive connection between the core 2 and the housing 1 the locking mechanism 16 one of an electromagnet 17 in a recess 18 of the core 2 movable locking bolt 19. In the position shown is the Locking bolt 19 in the recess 18 of the core 2. This indicates the closed position of the locking cylinder. To power the control electronics 13 and Locking mechanism 16 is a battery 20 in the housing 1 arranged.

The core 2 has a plastic at its ends manufactured core outer part 22 and one with the lock bit 3 connected core inner part 23. In their adjoining Areas have the core outer parts 21, 22 and that Inner core part 23 coils 24 arranged coaxially to one another - 27. The bundles 26, 27 of the core inner part 23 are located radially within the bundles 24, 25 of the core outer parts 21, 22. For an axial and non-rotatable connection have the collars 24-27 of the core inner part 23 and Core outer parts 21, 22 recesses aligned with one another 28, 29 for holding holding parts 30, 31.

Figure 2 shows in a sectional view along the line II - II from Figure 1 that the bundles 25, 27 several irregular Recesses distributed over the circumference 29, 32 each with a holding part 31, 33. The holding parts 31, 33 are designed as balls. The housing 1 has a in the area of the holding parts 31, 33 opening 35 closed by a screw plug 34. After removing the screw plug 34 can remove the holding parts 31, 33 from the recesses 29, 32. Furthermore, Figure 2 shows that a parting plane between the bundles 25, 27 in the region of the axis of rotation of the Core 2 facing half of the holding parts 29, 32 runs.

Claims (12)

Locking cylinder with a core which has a lock bit and which can be rotated in a housing for optional locking or unlocking, with a locking channel arranged in the core for introducing a key having a transponder, with an electronic locking mechanism for the optional generation or release of a positive locking of the core with the housing and with a code receiver connected to the electronic locking mechanism for receiving the signals of the transponder, characterized in that the core (2) has a sleeve-shaped core outer part (21, 22) which is remote from the locking bit (3) and is permeable to the signals of the transponder (12) and that the code receiver (10, 11) for receiving the signals of the transponder (12) is attached to the core outer part (21, 22) radially opposite in the housing (1). Lock cylinder according to claim 1, characterized in that the core (2) has a core inner part (23) close to the locking bit (3) with a high strength and in that the core inner part (23) and the core outer part (21, 22) are axially immovable and non-rotatable with one another are connected. Lock cylinder according to claim 1 or 2, characterized in that the locking mechanism (16) cooperates with the core inner part (23) and in that the core inner part (23) has greater stability than the core outer part (21, 22). Lock cylinder according to at least one of the preceding claims, characterized in that the inner core part (23) is made of metal and the outer core part (21, 22) is made of plastic. Lock cylinder according to at least one of the preceding claims, characterized in that the core outer part (21, 22) and the core inner part (23) have collars (24-27) which surround one another concentrically. Lock cylinder according to at least one of the preceding claims, characterized in that the collars (24-27) have at least one common recess (28, 29, 32) in the radial direction for receiving a holding part (30, 31, 33). Lock cylinder according to at least one of the preceding claims, characterized in that several recesses (28, 29, 32) are distributed irregularly over the circumference of the core (2). Lock cylinder according to at least one of the preceding claims, characterized in that the recess (28, 29, 32) is limited towards the axis of rotation of the core (2) and that the housing (1) has an opening (35) for the passage of the holding part (30, 31, 33) in the recess (28, 29, 32). Lock cylinder according to at least one of the preceding claims, characterized in that the holding parts (30, 31, 33) each have a round cross-section and face the housing (1) with their outer surface and that the housing (1) in the region of the holding parts (30, 31, 33) is tubular. Lock cylinder according to at least one of the preceding claims, characterized in that a separating edge between the collars (24-27) runs on the half of the holding parts (30, 31, 33) facing the axis of rotation of the core (2). Lock cylinder according to at least one of the preceding claims, characterized in that the collar (26, 27) of the core inner part (23) is arranged radially inside the collar (24, 25) of the core outer part (21, 22). Lock cylinder according to at least one of the preceding claims, characterized in that the holding parts (30, 31, 33) are designed as balls or pins.

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