WO2014071920A2 - Lock cylinder - Google Patents

Abstract

The invention relates to a lock cylinder comprising a lock cylinder housing and a cylinder core which is rotatably mounted in the lock cylinder housing by means of a key that can be inserted into the key channel of the core. The cylinder core has a cut-out section that extends longitudinally in the position of the key channel, into which section a cylinder core head, which covers the front end of the cylinder core and comprises a key channel formed on to said head, can be inserted as a separate component.

Description

 lock cylinder

The invention relates to a lock cylinder with a lock cylinder housing and a cylinder core, which is rotatably mounted in the lock cylinder housing by means of an insertable into his key channel key.

Are known mechanical lock cylinder, in which the coding is checked by mechanical tumblers, and lock cylinders containing electronic components alone or in conjunction with mechanical components.

In the case of these so-called mechatronic locking cylinders, not only does the task of the individual elements or components change, but also their geometry, due to the different modes of operation.

For example, the cylinder core no longer mechanically coded

Locking elements as a fuse element, but electrical / electronic / mechatronic functional components, which take over the task of locking pins.

Due to these changes, the geometric shape of the cylinder core is adjusted according to the functional elements.

Advantageously, mechatronic locking cylinders are designed so that their keyway has no opening to the cylinder jacket surface and back. Thus, there is no access to the mechanically non-coded locking elements on the one hand and to additional safety-related components (electronics and mechanics) on the other.

The production of such closed key profile channels in the core is technically complex or associated with limitations in the shape (geometry).

The object of the invention is to provide a lock cylinder, in particular a mechtronic lock cylinder, which is easier to manufacture and therefore less expensive. This object is achieved in a lock cylinder with a lock cylinder housing and a cylinder core which is rotatably mounted in the lock cylinder housing by means of an insertable into his key channel key

in that, instead of the key channel, the cylinder core has a longitudinally extending recess into which a cylinder core head covering the cylinder core can be inserted with a molded key channel as a separate component

Instead of the two variants described with open to the cylinder jacket surface and back and key integrated keyway of the cylinder core head is combined with the profiled key channel to form a separate component.

In this case, the cylinder core head and the molded keyway can preferably be integrally formed but also in several parts.

According to one embodiment of the invention, the recess for the insertable keyway in the cylinder core on a shorter axial Aussteckung than the usable keyway, so that between the cylinder core facing back of the cylinder core head and the end face of the cylinder core remains a, preferably annular, space.

This additional space can accommodate additional components of the

Lock cylinder, such as electronic components serve.

The main tasks for the key channel remain the positioning of the key and the transmission of energy for the rotational movement. Furthermore, additional components (including protective elements, trigger safety) can be accommodated.

Through the combination of cylinder head and key channel is an optimal

Positionability achieved by the sub-elements with their functions

• Cylinder core head (1) as depth limitation over stop

• Key channel (2) are coordinated as a guide element of the key shank. In addition, the combination increases the degree of modularity.

Optionally, the materials for the cylinder core head with keyway can be chosen so that there is an additional Bohrschutz.

The key channel, which is now designed as a component, can also initiate functions of subsequent components or serve as references (for example sliding clutch).

The invention will be explained below with reference to the drawings, which schematically only the keyway formed on the cylinder core head (Figure 1) and its use in the cylinder core (Figure 2) and not the remaining parts of a

Locking cylinder shows.

In the illustrated embodiment, the cylinder core head 1 is formed like a disk, with the keyway 2 is formed directly on its back. The insertion opening for the key is designated 3.

The molded on the cylinder core head keyway 2 is inserted into a matching recess 4 in the cylinder core 5. A key is inserted through the keyhole 3 and positioned by the combination stop on the cylinder head 1 and guide through the keyway so that the respective query element can check and release the access authorization. After release, the force is transmitted by the rotation of the key on the cylinder head 1 with key channel in a conventional manner to subsequent mechanisms.

Since the recess 4 for the insertable keyway 2 in the cylinder core 5 has a shorter axial Aussteckung than the insertable keyway, remains between the cylinder core 5 facing back of the cylinder core head 1 and the end face of the cylinder core an annular space 6, for optional components, e.g.

electronic components, can be used.

The redesign of the cylinder head 1 with key channel 2 as a separate component results in the following advantages: Modularity of the key channel, closed key channel

production-oriented design of cylinder core head and cylinder core optional, reference plane for subsequent elements,

optional inclusion of further functional elements,

optional drilling protection (by design, material or additionally insertable elements)

optionally different designs

Claims

claims 1. lock cylinder with a lock cylinder housing and a cylinder core (5) rotatable in the. By means of an insertable into his key channel key in the Lock cylinder housing is mounted, characterized, the cylinder core (5) has, instead of the key channel, a longitudinally extending recess (4) into which the cylinder core (5) covers the front side Cylinder core head (1) with a molded keyway (3) can be used as a separate component 2. Lock cylinder according to claim 1, characterized, that the cylinder core head (1) and the molded keyway (2) are integrally formed. 3. Lock cylinder according to claim 1, characterized, that the cylinder core head (1) and the molded keyway (2) are formed in several parts. 4. Lock cylinder according to one of the preceding claims, characterized, in that the recess (4) for the usable keyway (2) in the cylinder core (5) has a shorter axial engagement than the insertable keyway, so that between the back of the cylinder core head (1) facing the cylinder core (5) and the end face of the cylinder core ( 5) a space (6) remains. 5. Lock cylinder according to claim 4, characterized, that the installation space (6) serves to accommodate additional components of the lock cylinder, such as electronic components. 6. Lock cylinder according to one of the preceding claims, characterized, in that the cylinder core head (1) consists of a material serving as a drill protection or is provided with a drill protection.