DD295204B5 - Cylinder core extension for cylinder locks - Google Patents

Description

For this 1 page drawings

Field of application of the invention

The invention relates to a cylinder core extension for cylinder locks, which is fixed to the inside of the cylinder.

Characteristic of the known state of the art

Cylinder locks must often be made with different dimensions, as well as doors u.a. equipped with locks have very different thickness dimensions. For this purpose, it is known to extend the cylinders in locks, which is associated with a one-piece production with a high number of types and with all the related known disadvantages. It has also become known, a base cylinder in such a way that an extension piece can be fixed by means of a permanent connection. However, the disadvantage of a larger variety of types is not completely eliminated. The production cost can hardly be reduced.

Object of the invention It is the object of the invention to simplify the manufacture, assembly and storage of a cylinder core. Explanation of the essence of the invention The invention is based on the object, a cylinder core extension on the tail of a basic core solvable

postpone.

According to the invention the object is achieved in that the cylinder core extension with a collection and surveys

provided and movably guided rectilinearly connected to the cylinder.

The invention is further characterized in that a central elevation and the outer diameter of two parallel

trained claws are provided for the low-play engagement in a counter-profile of the inner cylinder piece. In this case, the mediocre elevation can be formed to the outer diameter. The length dimensions are provided in a series of 5 mm steps.

The essence of the invention is that the axial cohesion is created by a cleared claw profile. By

the positive connection with the base core, the extension is secured against rotation relative to the base core.

Compared to previously known solutions, such as rigid connection, core extension or special extended cores,

ensures the presented invention by easy interchangeability, regardless of the key profile, minimum

Laperbeständo of extension parts at the manufacturer and the service partner. embodiment The invention will be explained in more detail using an exemplary embodiment. In the drawing show

Fig. 1: the front view of the invention Fig. 2: the side view.

In Fig. 1, a cylinder core extension 1 is shown, which is detachably connected to a cylinder, not shown, known type and arranged in a housing of a cylinder lock. The Zylinderkernverlängorung 1 is provided with a feeder 2, the center has a survey 3. The survey 3 is longer than the radius of the cylinder core extension 1 and extends to the outside diameter. Parallel to the survey 3 are located on the outer diameter jaws 4.5 for a low-play engagement in the mating profile of the inner Zylinderendstücks. The claws 4,5 project beyond the survey 3. A groove 6

is aligned by the survey 3 at the same time on a groove in the cylinder so that the key-breast of a matching key can engage in the groove 6. The right part of the cylinder core extension 1 is provided with such a profile, as it is also arranged on the cylinder. It thus forms the counter profile for the fastening means according to the invention. The length dimensions of the cylinder core extension 1 are manufactured in a series of 5 mm steps. So far, all customer requirements could be met.

The assembly of the cylinder core extension 1 on the cylinder is simple. As apparent from Fig. 2, elevation 3 and claws 4, 4 are arranged in a parallel arrangement. The claws 4.5 dominate the survey 3. When straight insertion of the cylinder core extension 1 into the cylinder initially engages the survey 3 in a cylinder groove, the claws 4.5 then provide a spielarmo connection with clamping action. The advantages of the invention are significant.

First of all, warehousing and manufacturing is very easy. By maintaining only one basic element (cylinder), the service and repair are favored.

List of used reference numbers

1 cylinder core extension

2 feeder

3 survey

4 claw

5 claw

Claims (4)

1. Cylinder core extension for cylinder locks, which is fixed to the inside of the cylinder, characterized in that the cylinder core extension (1) with a feeder (2) and elevations (3) and movably guided in a straight line connected to the cylinder. 2. Cylinder core extension according to claim 1, characterized in that a central elevation (3) and the outer diameter of two parallel formed claws {4,5) are provided for the low-play engagement in a counter-profile of the inner cylinder tail. 3. Cylinder core extension according to claims 1 and 2, characterized in that the central elevation (3) is formed to the outer diameter. 4. Cylinder core extension according to claims 1 to 3, characterized in that the length dimensions are provided in a series of 5-mm steps.