DE9415780U1 - Colored beard key - Google Patents

Description

ti

Andreas Reh

Utility model application

Warded key

The invention relates to a warded key which is suitable for profile cylinders with an adapted keyhole channel and has a key bit which is arranged on the stem

DE-05 2 219 459 already describes a ward lock with a key in which the center of gravity of the key is arranged in such a way that the key inserted into the lock is held in an inclined position so that the key cannot slip out of the keyhole in an undesirable manner. To this end, it is proposed that the center of gravity of the key inserted into the lock be arranged in such a way that it holds the key bit when the key is inserted into the lock in a position in which the longitudinal center planes of the keyhole and the key bit intersect in the axis of the key shaft.

The disadvantage, however, is that the necessary accumulation of material in the area of the key handle involves additional effort. In addition, the key must have a key handle in order to ensure the shift in center of gravity.

With this known solution, unauthorized copying of the key cannot be prevented, which limits its area of application.

The invention has the task of developing a bumbar key whose unauthorized reproduction is largely prevented, which is easy to handle and can be produced inexpensively.

The problem is solved by the features listed in claim 1. Accordingly, the colored bit key has a key bit, which is characterized in that the bit is arranged on the upper half of the tap and then the beard tail is guided downwards, whereby a clearance is provided between the tap and the beard tail and the beard end is formed in a manner known per se.

According to a further feature of the invention, the warded key is manufactured using a casting process and consists of one piece.

The advantages achieved with the invention are in particular that the production of replacement keys by unauthorized persons is prevented or made more difficult. The mechanical production of a second key on a key machine is almost impossible, since the contours of the key bit do not allow such production. The production of the key according to the invention using the casting process is cost-effective, since rework is not necessary or only simple operations are required. The protection against copying of such a key is particularly provided by the fact that copying on a key cutting machine is not possible.

The invention is explained in more detail using an exemplary embodiment.

In the drawing, the key is shown in profile. The key has a beard that is arranged on the upper half 1 of the stem 2. The beard curve runs away from the stem and then downwards in a semicircle at a distance from the tap. The clearance 4 is formed between the stem 2 and the semicircular beard curve 3. The beard runs downwards in the known manner.

The key is inserted into the lock and turned. The end of the key engages the recess provided in the bolt and moves it, which locks it. The key can be used for locks that allow you to lock them twice. To unlock the lock, turn the key in the opposite direction. In the resting position, the key is slightly angled, which largely prevents it from falling out.

The key is preferably manufactured using a die-casting process. Machining production processes in particular are impractical and expensive due to the special shape of the key.

List of reference symbols

1 upper half

2 stalks

3 Bearded Tailing

4 Clearance

Claims (2)

Expectations 1. Warded key, which is suitable for profile cylinders built into the lock, has a key bit which is arranged on the stem, characterized in that the bit is arranged on the upper half (1) of the cock (2) and then a beard curve (3) is led downwards, whereby a clearance (4) is provided between the stem (2) and the beard curve (3) and the beard end is designed in a manner known per se. 2. Warded key according to claim 1, characterized in that the key is manufactured using a die-casting process and the key consists of one piece.