DE102010029167B4 - Profile cylinder key - Google Patents

Abstract

Profile cylinder key (1) with a key sheath (2) and with a key shank (3) starting from the key sheath (2), the cross-section of which, viewed from the key sheath (2), initially remains constant over the length of the key shank (3) and with an attachment piece (15) provided on the key tip, which is rotated about a longitudinal axis of the key shaft (3) with a predetermined angle of rotation (21) and over its own length (16) from the attachment point (17) to the key tip (18) runs exclusively within the cross-sectional border (19) of the key shaft (3).

Description

The present invention relates to a profile cylinder key according to the preamble of the main claim and a combination of such a profile cylinder key and an associated profile cylinder.

Profile cylinder keys are well known. They have a key crayon and a key shaft emanating from the key crayon. Usually located on the key shank recesses for the mechanical alignment of tumblers, which are provided on an associated profile cylinder or lock cylinder.

These tumblers consist according to the prior art of core pins and housing pins and are spring-loaded towards the lock core of such a profile cylinder.

By aligning the tumblers, which is done with fully inserted profile cylinder key, the parting planes of the core and housing pins are shifted so that ultimately all lie together in the rotational surface of the lock cylinder in the housing of the profile cylinder, so that the lock cylinder core is then freely rotatable.

Such profile cylinder key have proven to be excellent, since they provide a high level of security for the honest consumer.

All well-known manufacturers have committed themselves namely to copy high-quality profile cylinder key only after presentation of a corresponding security card itself or copy.

However, the problem arises when such key blanks are milled with the copy milling method available today to then simply take over the corresponding recesses on the key shank.

This can no longer be reconciled with the business principles of a well-known manufacturer of such profile cylinder keys and associated profile cylinders, if the manufacturer himself wants to abide by the corresponding promises, which he insures by handing over the security card, but third parties provide anyone on request with an inappropriately copied duplicate key can.

In addition, keys are also known ( DE 23 44 285 B2 ), whose key shank has a certain shapes. But such keys are also easily copied.

It is therefore an object of the present invention to develop the known profile cylinder key so that the copy security is further increased without additional electronic identifiers, etc. are necessary.

This object is achieved with a profile cylinder key having the features of claim 1.

From the invention there is the advantage that when making an inadmissible copy for the imitator, the function of the extension piece is not clearly recognizable because it is without knowledge of the structure of the profile cylinder. The function of the extension piece he could possibly recognize, if it is known whether the associated profile cylinder has a corresponding fitting part for the extension piece or not.

The particular effect of the invention is therefore that with the features of the invention, a profile cylinder key is placed under protection whose exact function is not readily apparent and can not be reconstructed by simple means, without examining the associated profile cylinder accurately.

The extension piece can thus serve the coding of the profile cylinder key or not.

It serves in each case the coding of the profile cylinder key, if the associated profile cylinder has a correspondingly coded counterpart.

If this is not the case, an inadmissibly copied key would only be able to be produced with an effort that is significant, without the copier being able to guarantee the fault-free operation of such a profile cylinder key.

In this case, the extension piece can be formed integrally with the key shank or two-piece.

In the case of one-piece design, it is sufficient to give the manufacturer the impression that the key tip is offset from the key grain by a certain angle of rotation.

In any case, since the outer contour of the end piece extends completely within the cross-sectional edge of the remaining key shank, it is ensured that the profile cylinder key fits into each key channel for which it has access authorization.

On the other hand, the extension piece may also be a component separate from the key shank, which is attached to the front end of the key shank and, for example, via this an anti-rotation is maintained in the predetermined angle of rotation.

In this way, different profile cylinder key with different hierarchy for a locking system can be manufactured and stored in the manner of a modular system with simple means, because only by the extension piece already a certain hierarchy can be specified.

In this case, the extension piece with the highest hierarchy will have the slenderest cross section, so that it fits into each profile cylinder lower ranks, but not vice versa.

Furthermore, it is recommended that the end piece assigned a coded outer contour, so that profile cylinder key, which are used for example for locking systems, each have matching coding of the outer contour and are then divided again within the hierarchy.

This can also serve different angles of rotation, with which differently coded lugs are attached to the corresponding profile cylinder key.

Of particular advantage is a development of the invention, wherein the profile cylinder key according to the invention have lugs that cooperate with corresponding fitting parts, which are provided on the closing cylinder side.

For this purpose, it is proposed that fitting parts are provided at the end of the key channel of the profile cylinder, which have respective, the keyway facing recesses, the outer contour of the key tip, ie ultimately the endpiece, must correspond to the exact inner contour of the fitting to the possibility Offer to be able to fully insert the profile cylinder key into the keyway of a profile cylinder.

Only then is it also ensured that the profile cylinder key can actually align the sprung tumblers, which it is intended to align with the usual recesses, in the sense of the rotational release of the lock core.

The fitting part may advantageously be a separate component from the lock core, which end is to attach to the lock core.

In this case, the fitting part on the one hand be rotatably mounted relative to the lock core and on the other hand also torsionally rigidly twisted around the angle of rotation of the extension piece to the key shank to be firmly connected to the lock core.

The profile cylinder key according to the invention can also be provided with conventional recesses beyond the attachment piece according to the invention in order, for example, to align tumblers provided on the closing cylinder side such that the rotational release of the lock core is achieved.

However, this is only possible if, assuming a profile cylinder with a corresponding fitting part, the profile cylinder key can also be inserted up to the stop in the keyway.

Since this question for the copier of a key can not be solved without knowledge of the lock cylinder, it must be assumed that the profile cylinder key according to the invention provides increased protection against counterfeiting.

Further advantages, features and details emerge from the subclaims and the following description, in which a preferred embodiment is described in detail with reference to the drawing. The features shown in the drawing and mentioned in the description and in the claims may each be essential to the invention individually or in any combination.

In the drawing show:

1 : An end view of a profile cylinder key according to the invention with a twisted endpiece:

1a : the interaction of a profile cylinder key according to the invention with a lock cylinder with fitting part; and

2 : The invention in representation of additional spring-loaded tumblers.

Unless otherwise stated below, the following description applies to all figures.

The drawing shows a profile cylinder key 1 with a key crop 2 and one of the key cereal 2 outgoing key shaft 3 ,

The cross section of the key shaft 3 , from the key crop 2 From the beginning, the length of the key shaft is first 3 consistently.

At the key shaft are recesses 4 provided, which are arranged according to position and depth, so that they are tumblers 5 , which are provided on the closing cylinder side, can align so that a rotational release of the lock core 13 is reached.

For this purpose, the tumblers exist 5 in a conventional manner from core pins 6 and housing pins 7 pointing towards the key channel 23 over compression springs 8th are loaded, so the core pins 6 slightly in the key channel 23 protrude and over the recesses 4 at the key shaft 2 be aligned so that the dividing planes between core pins 6 and housing pins 7 exactly with the turning surface 14 between the lock core 13 and the housing 10 of the profile cylinder 9 coincide. However, this assumes that the profile cylinder key 1 correspondingly far into the key channel 23 is hineinschiebbar.

To prevent this, if necessary, the profile cylinder key 1 at its tip an extension 15 which is about a longitudinal axis 22 parallel to the longitudinal centerline of the key shaft 3 runs, is twisted and its outer contour over its own length 16 , starting at the Ansetzstelle 17 to the key tip 18 exclusively within the cross-sectional border 19 of the key shaft 3 runs.

In front view corresponding 1 This results in an already recognizable from the outside deviation from normal key profiles, which might make it much more difficult for a copycat to give the copied key in a simple way a corresponding longitudinal profile.

It is just the view from the front on the key tip 18 . which is necessary for copying a profile cylinder key to select the appropriate profile or milling with today's means simply by copying.

Because the function of the twist angle 21 However, it is not readily apparent that the profile cylinder key according to the invention may well be attributed an increased security against imitation.

In this case, the extension piece 15 readily be integrally formed with the key shank and be milled out of the base material of the profile cylinder key.

On the other hand, the extension piece 15 also one of the key shaft 3 be separate component, which frontally to the front end of the key shaft 3 is set and for example on a rotation 20 , z. B. in the form of a gap-bridging pin to be connected to the key shank.

This situation is in 1a shown where the rotation 20 a bridging pin is the key shank 3 with the extension 15 holds against rotation. The starting piece 15 can, for example, with a grooved pin accordingly 1a with the key shaft 3 be connected.

In particular 1 can recognize the attachment piece 15 also have a coded outer contour. By this is meant that certain surfaces on the end piece 15 are provided, the, provided equipment of an associated profile cylinder, with gegenkodierten contour surfaces at the end of the keyway 23 interact.

As can be easily understood, such extensions can 15 also over different angles of rotation 21 be encoded, so that the invention provides the possibility of further variations according to coded combinations of profile cylinder keys and associated profile cylinders.

In particular, this shows 2 the combination of a profile cylinder key according to the invention 1 according to one of claims 1 to 5 and an associated profile cylinder 9 whose locking core 13 in the circular cylindrical housing part 11 of the housing 10 of the profile cylinder 9 is housed.

To the circular cylindrical housing part 11 closes a web-like housing part 12 in which, depending on the design, also tumblers 5 can sit. The tumblers 5 consist of core pins 6 and housing pins 7 pointing towards the key channel 23 are spring loaded and are aligned by the inserted profile cylinder key so that the parting lines between core pins 6 and housing pins 7 exactly in the turning area 14 lie, which between the lock core 13 and the associated housing part is arranged.

It is essential that this orientation of the tumblers 5 only possible if at the inner end of the key channel 23 a passport part 25 is provided, which via a key channel 23 facing recess 26 has its contour with the contour of the extension piece 15 corresponds exactly so that only when the contours match the full insertion depth of the profile cylinder key 1 is reached.

At this point should be expressly stated that it is on the fitting part 25 only arrives, if this is also desired by the user.

By omitting the fitting part 25 Although each would not have the measures of the invention possessing profile cylinder key in the keyway 23 be insertable.

Nevertheless, he would have the appropriate recesses 4 dispose of the tumblers 5 align so that rotation release of the lock core 13 is reached.

However, the invention goes far beyond the minimum requirements that an authorized key must have, without it being apparent to a key-copy service, whether it is the hub 15 has a function or not.

This is important, because only by retrofitting the corresponding profile cylinder key in the context of the invention, a desired counterfeit prevention effect occurs, which provides additional security for the user. Here, the fitting part 25 one from the lock core 13 be separate component, which end to the lock core 13 is attached. On the other hand, it is also conceivable that the fitting part 25 with the lock core 13 is blindly connected.

However, this assumes that the twist angle 21 which is between the extension piece 15 and the key crop 2 or the key shaft 3 is present, just as large as the twist angle of the fitting part 25 relative to the lock core 13 , On the other hand, the fitting part 25 also rotatable on the shooting core 13 sit, so first of all with insertion of the profile cylinder key 1 in the key channel 23 with increasing approach of the key tip 18 to the fitting part 25 The latter must first be aligned to verify the access authorization of the profile cylinder key.

Because the fitting part 25 at the inner end 24 of the key channel 23 In addition, the advantage is given that a manipulation of the fitting part 25 is practically excluded.

For this reason, a development of the invention is advantageous in which approach piece 15 and fitting part 25 have a hierarchical coding in the sense of locking technology.

Here is the profile cylinder key 1 the highest hierarchy in a profile cylinder 9 lower hierarchies, but not vice versa.

This assumes that the lugs 15 at the profile cylinder keys 1 highest hierarchy in any case are slimmer than the extensions 15 on profile cylinder keys 1 lower hierarchies.

Of particular advantage, the invention is also in a profile cylinder key of the type shown, whose cross section substantially 8th -shaped and the over a widened waist area 3c has, at which the two thick areas 3a and 3b connect.

Since such a profile cylinder key, known per se from the series "JANUS" Applicant, offers significant advantages in terms of variation and imitation security, the imitation security is even increased by the invention, because the manufacturing requirements for imitation of this profile cylinder key no longer every usual locksmith are accessible for the reasons mentioned above.

LIST OF REFERENCE NUMBERS

1

Profile cylinder key

2

key grip

3

key shaft

3a

first thick area

3b

second thick area

3c

waist

4

recess

5

tumbler

6

core pin

7

housing pin

8th

compression spring

9

profile cylinder

10

casing

11

Circular cylindrical housing part

12

Web-like housing part

13

lock core

14

surface of revolution

15

extension

16

length of 15

17

piecing

18

key tip

19

Cross-sectional border of 3

20

twist

21

angle of twist

22

longitudinal axis

23

keyway

24

Inner end of 23

25

fitting part

26

Recess out 25

Claims (10)

Profile cylinder key ( 1 ) with a key crop ( 2 ) and one of the key crayons ( 2 ) outgoing key shaft ( 3 ), whose cross-section, from the key cereal ( 2 ), over the length of the key shaft ( 3 ) is initially consistent and with a fixed at the key tip extension ( 15 ), which is about a longitudinal axis of the key shaft ( 3 ) with a predetermined twist angle ( 21 ) is twisted and over his own length ( 16 ) from the placement point ( 17 ) to the key tip ( 18 ) exclusively within the cross-sectional border ( 19 ) of the key shaft ( 3 ) proceeds. Profile cylinder key according to claim 1, characterized in that the extension piece ( 15 ) and the key shaft ( 3 ) are integrally formed and that the extension piece ( 15 ) from the base material of the profile cylinder key ( 1 ) or that the attachment piece ( 15 ) from the keyring ( 3 ) is a separate component, which frontally to the front end ( 17 ) of the key shaft ( 3 ) is set. Profile cylinder key according to one of the preceding claims, characterized in that the extension piece ( 15 ) has an encoded outer contour. Profile cylinder key according to one of the preceding claims, characterized in that for different profile cylinder key the positions of the respective lugs ( 15 ) concerning the key crop ( 2 ) for different angles of rotation ( 21 ) are fixed. Profile cylinder key according to one of the preceding claims, characterized in that the extension piece ( 15 ) movable, in particular pivotable on the key shaft ( 3 ) and the blocking element is designed in the form of one or more scanning pins. Combination of a profile cylinder key ( 1 ) according to one of the preceding claims and an associated profile cylinder ( 9 ) whose closing core ( 13 ) one to the cross section of the key shaft ( 3 ) corresponding key channel ( 23 ), characterized in that at the inner end ( 24 ) of the key channel ( 23 ) a passport part ( 25 ) is provided, which via a the key channel ( 23 ) facing recess ( 26 ) whose contour coincides with the contour of the endpiece ( 15 ) corresponds so precisely that only when the contours match the complete insertion depth of the profile cylinder key ( 1 ) in the keyway ( 23 ) is achieved. Combination according to claim 6, characterized in that the fitting part ( 25 ) one from the lock core ( 13 ) is separate component, which is attached to the end side of the lock core. Combination according to claim 7, characterized in that the fitting part ( 25 ) with the lock core ( 13 ) torsionally rigid and around the twist angle ( 21 ) of the endpiece ( 15 ) to the key crop ( 2 ) is twisted connected. Combination according to claim 7, characterized in that the fitting part ( 25 ) relative to the lock core ( 13 ) is rotatably mounted on this. Combination according to one of claims 6 to 9, characterized in that the extension piece ( 15 ) and the fitting part ( 25 ) have a hierarchical encoding in the sense of locking technology.

Images