DE2320184C3 - Cylinder core with reversible key for a rotary cylinder lock with tumbler plates arranged in two separate groups on opposite sides of the keyway - Google Patents

Description

40

The invention relates to a cylinder core with a reversible key for a rotary cylinder lock with in two separate groups on opposite sides of the keyway arranged tumbler plates, each of which has a tumbler plate of one group in one and the same radial plane a tumbler plate of the other group lies with the tumbler plates arranged on the Key incisions come into contact with control stages, each in a radial plane arranged tumbler plates can be withdrawn in opposite directions using the reversible key are, and with the penetration depth of the reversible key in the key channel limiting discounts on Reversible key and on the cylinder core.

Such a cylinder lock with tumbler plates lying in one plane is for example in the FR-PS 20 69 499 shown and described. Is a reversible key in such a cylinder lock used, then the tumbler plates of both groups can not be designed differently because the reversible keys specified there are symmetrical. On the other hand, a different one closes there Formation of tumbler plates in both groups the use of a reversible key out.

In another embodiment described in FR-PS 20 69 499, the use of a reversible key is used with such cylinder locksmiths, the fact that the plates of both groups are offset from one another are arranged. In a further embodiment described there is a cylinder lock for a reversible key in which each key edge has milled cuts in different planes. . . - ,. ·.,

The object of the invention is to design a cylinder core with a reversible key of the type mentioned above so that the control stages of a pair of tumbler plates located in one and the same radial plane no longer need to be the same, but that they can be selected independently of one another, but with the advantage of an easily manufactured, simple reversible key obtained ^lead-BE the ^oil solution of the invention is to form a cylinder core with turning key for a rotary cylinder lock of the type indicated in the preamble such that the control stages and the corresponding key cuts vary at least two leb'ne in a Radi lying Zuhaltungsplättchen are designed that the reversible key on its two longitudinal sides arranging the tumbler plates alternately in the longitudinal direction has the key cuts corresponding to the two separate groups and that the stops on the cylinder core and on the Wendesc Keys are designed such that the reversible key in its turned position has a changed penetration depth corresponding to the spacing of the radial planes containing the tumbler plates from one another.

With the invention is achieved in an advantageous manner that a reversible key is obtained in which the key cuts for both groups of tumblers are present on both control edges of the key, but the arrangement of the tumbler plates The formation of a simple one is also retained in one and the same radial plane Key, which is also easy to manufacture as a reversible key is. .

If the usual cylinder locksmiths have more than ten tumbler plates of different types, for example Graduation can be provided, as is the case with individual steering wheel locks, so will either the total length of the cylinder core is increased to such an extent that the rotary cylinder lock is normally Can no longer be used for vehicle door locks, ignition locks or the like, or the cylinder lock can no longer be operated with a reversible key with previously common arrangements. The invention enables a cylinder lock with high security with axial dimensions, as it is otherwise only offers a lower level of security, for example a device with ten tumblers the same dimensions as a conventional arrangement with only five tumblers. If a lesser Security is possible, then you can have some tumblers, for example a complete group, omitting.

In a further embodiment of the invention, the attacks axially offset and formed by surfaces on the cylinder core and their offset corresponds to half the distance between the radial planes.

The cylinder core according to the invention with a reversible key for a rotary cylinder lock is shown in the drawing

and should be used in the following on the basis of the Drawings as an example! are explained in more detail. The drawings show in F i g. 1 a side view of the rotary cylinder lock,

F i g. 2 and 3 corresponding sections along the L-lines 11-1! and IH-IH of fig. 1,

FIG. 4 ene of FIG. 1 similar single view of a Cylinder core,

F i g. 5 is an external view of the cylinder core;

F i g. 6 and 7 corresponding sections along the lines VI-VI and VII-VIl of FIG. 4,

F i g. 8 and 9 corresponding sections along the lines VIII-VIlI and IX-IX of FIG. 5 and in F i g. 10 is a plan view of a reversible key.

The cylinder lock with its unusually short length offers the security of a conventional cylinder lock with ten tumblers. The ten tumblers are arranged in two groups of five tumbler plates each Λ 1, Λ 2 ... Λ 5 and Bl ₁ B 2 ... ß5 symmetrically on opposite sides of a key channel 10 in the cylinder core II. Each tumbler plate A or B is individually in the protruding locking position according to FIG. 2 is loaded by a spring and extends generally over half of the keyway 10.

Corresponding tumbler plates of the two groups A and B are coplanar, ie they lie in one and the same radial plane, so that the corresponding tumbler plates are arranged in pairs laterally with respect to the cylinder core, ie Ai: Bi, A2-B2 , etc., with the two tumbler plates of each pair protrude in opposite directions and are arranged on opposite sides of the keyway 10, respectively. On their inner side edges, the tumbler plates have control stages 12 for engaging with the reversible key 13 with a corresponding retraction of tumbler plates A and B into the cylinder core. Each tumbler plate is independently loaded into the protruding locking position by its own plate spring 14. The reversible key has two identical rows of key cuts Cl ₁ C2 ... C5 and D 1, D 2 ... D 5 on each edge, the row C 1, C2 ... C5 corresponding to a row of tumbler plates A 1 , A 2 ... A 5 and the other row Di, D2 ... D5 acts accordingly on the other row of tumbler plates Bl, B2 ... B5. The rows of key cuts on both of them. Edges of the reversible key are arranged in the manner shown, and for the use of the reversible key 13 and correct setting in each key position, the cylinder core 11 has stops 15 and 16 on the opposite shorter sides of the keyway 10, the areas of which are correspondingly in the axial direction by half the height the tumbler plates A and B are offset. The stops 15 and 16 are detected by the stops 117 and 18 in the area of the key diamond, which are accordingly offset in a similar manner. In one position of the reversible key 13, the stops 17 and 18 detect the stops 15 and 16, while in the other position only the stop 17 detects the stop 16, so that a different depth of the key insert is possible for each of the two key positions.

The tumbler plates A and B are inserted into corresponding pairs of slots in the cylinder core U, the pairs correspondingly as El, Fl;

E2, F2 ... ES, F5 are designated. The two slots of each pair are separated by partition walls 19 on the cylinder core U, as shown in particular in FIG. 2 and 6 can be seen The partition walls are offset from one another so that a narrower key chain

nal arises at the end at which the corresponding tumbler plates A or B protrude when the reversible key is removed. The sides of the key channel 10 are provided in the areas between the tumbler plate slot pairs with offset nose-like projections 20 for the key guide. These projections engage in the usual lateral guide grooves 21 in the reversible key 13.

At its further end, each slot E or fine side spring pocket 22 (see FIG. 4), and each of these pockets receives a corresponding plate spring 14, as shown in FIG. 2 can be seen. The five plate springs 14 of each group of tumbler plates A or B are held back in their position in the corresponding row of pockets 22 by a V ': terminal strip 23. Each locking strip 23 is seated in a corresponding longitudinal groove 24 in the cylinder core 11, extends over the corresponding row of side spring pockets 22 and is held there in its length by the metal of the cylinder core 11 being seated along the locking strip.

A single additional tumbler plate 25 is at the inner end of the cylinder core 11 in its own wide slot 26, as can be seen from FIG. 1 and 3 can be seen. This tumbler plate has its own plate spring 27, which is held back by the corresponding locking strip 23, and has no locking function because it is by inserting of the reversible key remains unaffected. This tumbler plate 25 is only used to hold the Cylinder core within the cylinder housing, whereby the tumbler plate when inserted into the housing 25 pops out and engages in an internal groove in the cylinder housing so that the cylinder core does not more can be removed. Projecting lugs 28 at the inner end of the cylinder core 11 provide the Rotary coupling of the cylinder core m'r a device such. B. a steering lock, an ignition lock or the like, which is to be locked or unlocked with the aid of the rotary cylinder lock.

The plate springs 14 engage in side projections 29 of the tumbler plates A and B, these side projections moving into the side spring pockets 22 during the movement of the tumbler plates. The side projections 29 strike the bottoms of the side spring pockets 22 and limit an outward displacement of the tumbler plates A and B into the blocking positions.

The arrangement described enables both edges of the reversible key to be used at the same time The key cuts are straight and the reversible key remains a flat key. As a result, the reversible key can be produced in a simple manner.

For this purpose 3 sheets of drawings

Claims (2)

Patent claims: 1. Cylinder core with reversible key for. a three-cylinder lock with tumbler plates arranged in two separate groups on opposite sides of the key channel, of which a tumbler plate of one group lies in one and the same radial plane with a tumbler plate of the other group, with control stages arranged on the tumbler plates and coming into contact with the key slots, The tumbler plates each arranged in a radial plane can be retracted in opposite directions by the reversible key, and with stops on the reversible key and on the cylinder core that limit the depth of penetration of the reversible key into the keyway, characterized in that the control stages (12) and the corresponding key incisions (C. D) at least two tumbler plates (A, B) lying in a radial plane are designed differently, so that the reversible key (13) lengthways on its two long sides which arrange the tumbler plates (A, B) direction alternately has the key cuts (C, D) corresponding to the two separate groups, and that the stops (15, 16 or 17, 18) on the cylinder core (11) and on the reversible key (13) are designed in such a way that the reversible key (13 ) in its turned position has a changed penetration depth corresponding to the spacing of the radial planes containing the tumbler plates (A, B) from one another. 2. Cylinder core according to claim I _1, characterized in that the stops (15, 16) are axially offset and are formed by surfaces on the cylinder core (11), and that their offset corresponds to half the distance between the radial planes from one another.