EP0953699B1 - Locking cylinder and flat key with variable key section therefor - Google Patents

Abstract

The two flat sides of the key shaft (2) have longitudinal grooves and or ridges which differ from the longitudinal profile of the tip part. The shaft at the key-bit has at least one key notch (5') in the key-bit in the tip part (4).for controlling a tumbler pin. The tip profile is thinner than the shaft profile so that it is contained inside the shaft profile.

Description

The invention relates to the design of cylinder cores for locking cylinders with a variable step profile and the compatible flat keys and refers to conventional systems of cylinder locks with profiled vertical key channel.

With these systems, the key is inserted vertically and has corresponding vertical mills. By correctly inserting the key locking element - in those shaped according to the key Key channels are correspondingly different lengths pins designed according to the milling depth of the key notches pressed into a plane and release a dividing line. Consequently ensures that the profile core is rotated in the housing can be. Crucial for the functioning of this The process is the correct coordination between milling in the key and length of the corresponding core pin as well the absolute identity of the profiles on the key and in the Cylinder core.

With locking cylinders of the conventional type, the Cylinder core the key profile, which in interaction with the correspondingly profiled and with notches provided a large number of possible codes when calculating individual closures or Locking systems guaranteed.

A profile is characterized by basic features and Supplementary features. The greater the number of different ones Profile characteristics, the greater the variation possibilities.

According to DAS 1 553 388 is an arrangement in a rotary cylinder lock to increase the number of different Closing options known, being in radial bores running to the cylinder core and cylinder housing Pin tumblers are slidably mounted one behind the other, where the perpendicular radial distance of the cross section unchanged key channel from the lateral surface of the cylinder core is changed.

To further increase the closing variation options a tumbler pin system is described in DOS 44 19 999 A 1, that from two or more types of tumbler pins exists, with each type of tumbler one has a separate angle at its tip, with the angle of the key hole is identical.

The DOS 26 09 777 includes a security cylinder lock, which is characterized in that in the lower part of the cylinder core profileless hard metal plate are introduced as a security deposit. These plates have no profile features and serve not to increase the number of possible encodings.

D 1 = WO-A-9106733 describes a locking cylinder (20) with assigned key. which is in the upper part of the Key channel (30) elongated. rod-shaped profile body (36 and 38). which in elongated recesses (29) with slots (44 and 46) along the cylinder core (22) are arranged. It is possible. in the front and rear area of the cylinder core (22) different Arrange profile body (136 and 138).

The invention has for its object a lock cylinder with assigned flat key in variable Step profile, the hard metal plate in the cylinder core (10) having. to develop a much higher one Profile diversity enables and thus the number of possible Codings many times over without the use of additional ones Locking elements increase, the copying ability of the key is difficult.

This is according to the invention by the characteristic Parts of the protection claims 1 - 5 solved.

The invention is described below using an exemplary embodiment shown.

Fig. 1

einen Längsschnitt durch einen herkömmlichen Schließzylinder mit zugeordnetem Schlüssel

Fig. 2

eine Vorderansicht nach Fig. 1

Fig. 3

eine Vorderansicht des Zylinderkerns

Fig. 3a

eine Draufsicht des Zylinderkerns

Fig. 3b-d

Querschnitte des Zylinderkerns zu Fig. 3 und 3a

Fig. 4

eine Seitenansicht eines Profilplättchens

Fig. 4a

eine Vorderansicht eines Profilplättchens

Fig. 5

eine Vorderansicht des Zylinderkerns mit möglichen Positionen für das hintere Profilpiättchenpaar

Fig. 5a

eine Draufsicht nach Fig. 5

Fig. 6

einen zugeordneten Flachschlüssel mit Stufenprofil in Vorderansicht

Fig. 6a

eine Rückansicht nach Fig. 6

Fig. 6b+c

Querschnitte nach Fig. 6

Fig. 7

einen abgesetzten Schlüssel mit Stufenprofil in der Vorderansicht

Fig. 7a

eine Draufsicht nach Fig. 7

The drawings show:

Fig. 1

a longitudinal section through a conventional lock cylinder with assigned key

Fig. 2

2 shows a front view according to FIG. 1

Fig. 3

a front view of the cylinder core

Fig. 3a

a plan view of the cylinder core

3b-d

Cross sections of the cylinder core to Fig. 3 and 3a

Fig. 4

a side view of a profile plate

Fig. 4a

a front view of a profile plate

Fig. 5

a front view of the cylinder core with possible positions for the rear profile plate pair

Fig. 5a

5 shows a top view according to FIG. 5

Fig. 6

an assigned flat key with step profile in front view

Fig. 6a

6 shows a rear view according to FIG. 6

6b + c

Cross sections according to FIG. 6

Fig. 7

a stepped key with step profile in the front view

Fig. 7a

7 shows a top view according to FIG. 7

Fig. 1 shows a conventional lock cylinder. The number of possible codings results from the Number of different cleared profiles 1, different notch depths in key 2 and length the corresponding core pins 3 in the cylinder.

In Fig. 2 this lock cylinder is cleared Profile 1 shown in the front view.

3 shows the front view of the cylinder core In this are on the front and back Recesses arranged. In the front recess lies the pair of profile plates 4, consisting of a left profile plate 4a and a right profile plate 4b. There is in the rear recess the pair of profile plates 5, consisting of a left Profile plate 5a and a right profile plate 5b. This is further shown in Fig. 3a.

The structure of a profile plate is shown in Figs. 4 and 4a. For example, the left one Profile plate 4a, the profile features 6 and 8 of the basic profile as well as the supplementary features 6a and 8a. The cross section of the cylinder core is after the cuts A-A, B-B and C-C shown in Figures 3b, 3c and 3d.

In section A-A of Fig. 3b is the front pair of profile plates 4 in the front area of the cylinder core arranged. Therein are the profile features 6, 7, 8, 9 of the basic profile and the additional features 6a, 7a and 8a included.

In section C-C of Fig. 3d are again the same Profile features 6, 7, 8, 9 of the basic profile as well as the same supplementary features 6a, 7a and 8a as in Section A-A included. In addition to these features were the supplementary features 6b in the left profile plate 5a and 7b incorporated in the right profile plate 5b.

In section B-B of Fig. 3c are the profile features 6, 7, 8, 9 of the basic profile throughout the cylinder contain.

5 and 5a show that the previous Position of the pair of profile plates 5 in the rear area of the cylinder core towards the front area can be arranged changeable. These possible Positions 5 'and 5' 'in the cylinder core for the rear Profile plate pair 5 are in the direction of the profile plate pair 4 selectable in the front area. This pair of profile plates 5 'and 5' ' also a left and right profile plate 5'a, 5'b, 5''a and 5''b.

In addition to inserting a rear pair of profile plates 5 can also be inserted laterally Pins in the cylinder core additional additional features be created.

Another way to train a variable Step profile consists of the profile characteristics of the Basic profile 6, 7, 8, 9 and supplementary features 6a, 7a. 8a, 6b, 7b in the front and rear pair of profile plates Form 4 and 5 the same, but the width of the entire profile in the rear pair of profile plates 5 compared to the width of the profile in the front pair of profile plates 4 decrease.

7 shows the assigned key. It has a smaller width at the top than at the key side.

The profile features 6, 7, 8, 9 of the basic profile of the The cylinder key is the assigned flat key with Step profile adapted according to FIGS. 6a, 6b, 6c, wherein the supplementary features 6a, 7a, 8a, 6b, 7b accordingly the position of the pair of profile plates 4 in the front area and the pair of profile plates 5 in the rear area and the possible positions 5 'and 5' 'in the cylinder core for the rear profile plate pair by grooves according to the location of the above positions are incorporated.

The profile in conventional cylinder cores bears all over Length of all basic and supplementary features and must be included Clearing knives. In the cylinder core according to the invention only the profile features of the basic profile become basic features - brought in. You take over the play-free Guide of the key in the cylinder core. All supplementary features are designed by the different Profile tiles created. The profile plates according to the invention in the locking cylinder with form cutters or special punching tools made relatively inexpensive become. There is no need to buy expensive sets of room knives.

The development of new complicated profile geometries much easier because the profiling in the cylinder core no longer has to be done with plow blades only. There the cylinder cores for locking cylinders are preferably made Brass are made, there is a risk of wear the key profile in the cylinder core with frequent To use. In contrast, exist in the cylinder core according to the invention the profile plates made of steel, preferably hardened Steel, and therefore have a much higher wear resistance.

The insertion of hardened profile plates in the front The area of the cylinder core also leads to an increased Tear protection. The design of the profile plates does not provide an effective point of attack for a drill.

The insertion of the second pair of differently profiled plates in the rear part of the cylinder core does not lead just to multiply the possible codes, it also requires the production of appropriate keys, which are characterized in that they are simultaneously wear two different profiles. Such keys can only be manufactured on special profiling machines become. This makes unauthorized copying essential difficult.

By using the aforementioned profile plates on two Positions in the cylinder core of the locking cylinder and with different profiling results in an expansion of the profile variants in 2-fold power. On consideration of locking systems with 50 different profile variants, 6 pin tumblers and 9 different notch depths results a theoretical number of possible codings.

Number of codings in a conventional profile cylinder:

Number of codes in the profile cylinder with VSP:

If you increase the number of possible positions to 4, so there are approximately 330 billion different codings. This the enormously high number of possible codings enables Calculation and production of the most extensive locking systems, which so far only using additional locking elements were producible.

To further increase the profile variants and thus the Number of possible encodings it is possible instead a front pair of profile plates 4 and rear Profile plate pair 5 or the aforementioned pins three and more profile plate pairs or pins, distributed on the entire length of the cylinder core.

Second embodiment

Fig. 1

einen Längsschnitt durch einen herkömmlichen Schließzylinder mit zugeordnetem Schlüssel

Fig. 2

eine Vorderansicht nach Fig. 1

Fig. 3

eine Vorderansicht des Zylinderkerns

Fig. 3a

eine Draufsicht des Zylinderkerns

Fig. 3b-d

einen Querschnitt des Zylinderkerns zu Fig. 3 und 3a

Fig. 3e

einen Querschnitt durch einen Profilzylinder mit eingeführtem Flachschlüssel und zusätzlichem seitlichem Stift

Fig. 4

eine Seitenansicht eines Profilplättchens

Fig. 4a

eine Vorderansicht eines Profilplättchens

Fig. 5

eine Vorderansicht des Zylinderkerns mit möglichen Positionen für das hintere Profilplättchenpaar

Fig. 5a

eine Draufsicht nach Fig. 5

Fig. 6

einen zugeordneten Flachschlüssel mit Stufenprofil in Vorderansicht

Fig. 6a

eine Rückansicht nach Fig. 6

Fig. 6b+c

Querschnitte nach Fig. 6

The drawings show:

Fig. 1

a longitudinal section through a conventional lock cylinder with assigned key

Fig. 2

2 shows a front view according to FIG. 1

Fig. 3

a front view of the cylinder core

Fig. 3a

a plan view of the cylinder core

3b-d

a cross section of the cylinder core to Fig. 3 and 3a

Fig. 3e

a cross section through a profile cylinder with an inserted flat key and additional lateral pin

Fig. 4

a side view of a profile plate

Fig. 4a

a front view of a profile plate

Fig. 5

a front view of the cylinder core with possible positions for the rear profile plate pair

Fig. 5a

5 shows a top view according to FIG. 5

Fig. 6

an assigned flat key with step profile in front view

Fig. 6a

6 shows a rear view according to FIG. 6

6b + c

Cross sections according to FIG. 6

Fig. 1 shows a conventional lock cylinder. The number of possible encodings results from the Number of different cleared profiles 1, different notch depths in key 2 and length the corresponding core pins 3 in the cylinder.

In Fig. 2 this lock cylinder is cleared Profile 1 shown in the front view.

3 shows the front view of the cylinder core In this are on the front and back Recesses arranged. In the front recess lies the pair of profile plates 4, consisting of a left profile plate 4a and a right profile plate 4b. There is in the rear recess the pair of profile plates 5, consisting of a left Profile plate 5a and a right profile plate 5b. Located on level 18 of the fourth core pin 3 additionally a side pin 11. This is further shown in Fig. 3a.

3a shows a top view according to FIG. 3

The structure of a profile plate is in Figs. 4 and 4a. For example, the left profile tile shows 4a the profile features 6 and 8 of the basic profile as well as the supplementary features 6a and 8a. The cross section of the cylinder core is according to cuts A-A, B-B and C-C shown in Figures 3b, 3c and 3d.

In section A-A of Fig. 3b is the front pair of profile plates 4 in the front area of the cylinder core arranged. Therein are the profile features 6, 7, 8, 9 of the basic profile and the additional features 6a, 7a and 8a included.

In section C-C of Fig. 3d are again the same Profile features 6, 7, 8, 9 of the basic profile as well as the same supplementary features 6a, 7a and 8a as in Section A-A included. In addition to these features were the supplementary features 6b in the left profile plate 5a and 7b incorporated in the right profile plate 5b.

In section B-B of Fig. 3c are the profile features 6, 7, 8, 9 of the basic profile throughout the cylinder contain. At this level 18 of the fourth core pin 3 is also the additional lateral pin 11.

Fig. 3e shows the operation of the side pin 11. In the cylinder core 10 is an additional side Pin 11 used, exactly on the plane 18 of the core pins 3 lies. The associated flat key 12 according to FIG. 6a has a corresponding exactly fitting milling 13. The flat key 12 in the key channel 14 defined with its milled 13th the location of the lateral pin 11. The lateral pin 11 closes exactly with the outer edge of the cylinder core 10 and the inside of the core bore of the Housing 15 from.

4 and 4a represent a side view and a Front view of a profile plate.

5 and 5a show that the previous Position of the pair of profile plates 5 in the rear area of the cylinder core towards the front area can be arranged changeable. These possible Positions 5 'and 5' 'in the cylinder core for the rear profile plate pair 5 are towards Optional pair of profile plates 4 in the front area determinable. This pair of profile plates 5 'and 5' ' also has a left and right profile tile 5'a. 5'b, 5''a and 5''b.

The profile features 6. 7, 8, 9 of the basic profile of the The cylinder key is the assigned flat key with Adjusted step profile according to FIGS. 6, 6a, 6b, 6c. the supplementary features 6a, 7a, 8a, 6b, 7b accordingly the position of the pair of profile plates 4 in the front Area and the pair of profile plates 5 in the rear Range and possible positions 5 'and 5' ' in the cylinder core for the rear profile plate pair by grooves according to the location of the aforementioned Positions incorporated ind. Furthermore, the Flat key 12 the exact matching cut 13 according to the position of the additional side Pin 11.

The profile in conventional cylinder cores is bulky full length all basic and supplementary features and must be cleared with clearing knives. In the only the profile features of the basic profile - basic features - introduced. You take over the play-free guidance of the key in the cylinder core. All supplementary features are through created the differently shaped profile plates. By inserting the side pin 11 the copy protection is additionally increased.

When inserting the flat key 12 into the key channel 14, the side pin 11 is pressed outwards and closes exactly with the outer edge of the cylinder core 10 from. The cylinder core 10 can be rotated in the housing 15 and the closing process is carried out.

Is the milling in flat key 13 missing or is it too flat, the key cannot be completely in insert the key channel 14, the locking process can cannot be executed. Is the milling in the flat key 13 too deep, the side pin 11 closes with inserted flat key 12 not with the outer edge of the cylinder core 10. When turning the cylinder core 10 in the housing 15, the housing pin 16 through the spring 17 sitting behind it in the resulting gap pressed and blocks further rotation. The closing process will be interrupted.

List of the reference numerals used in the first embodiment

1

cleared profile

2nd

Notch depths in the key

3rd

Core pin

4th

Profile plate pair in the front area

4a

left profile tile of the pair of profile tiles 4th

4b

right profile plate of the pair of profile plates 4th

5

Profile plate pair in the rear area

5a

left profile tile of the pair of profile tiles 5

5b

right profile plate of the pair of profile plates 5

6,7,8,9

Professional features of the basic profile

6a, 7a, 8a, 6b, 7b

Supplementary features

5 '., 5' '

possible positions in the cylinder core for the rear pair of profile plates

5'a

left profile tile of the pair of profile tiles 5 '

5'b

right profile plate of the pair of profile plates 5 '

5''a

left profile tile of the pair of profile tiles 5 ''

5''b

right profile plate of the pair of profile plates 5 "

List of the reference numerals used for the second Embodiment

1

cleared profile

2nd

Notch depths in the key

3rd

Core pins

4th

Profile plate pair in the front area

4a

left profile tile of the pair of profile tiles 4th

4b

right profile plate of the pair of profile plates 4th

5

Profile plate pair in the rear area

5a

left profile tile of the pair of profile tiles 5

5b

right profile plate of the pair of profile plates 5

6,7,8,9

Profile features of the basic profile

6a, 7a, 8a, 6b, 7b

Supplementary features

5 ', 5' '

possible positions in the cylinder core for the rear pair of profile plates

5'a

left profile tile of the pair of profile tiles 5 '

5'b

right profile plate of the pair of profile plates 5 '

5 '' a

left profile tile of the pair of profile tiles 5 ''

5 "b

right profile plate of the pair of profile plates 5 ''

10th

Cylinder core

11

side pin

12th

Flat key

13

Milling in the flat key

14

Key channel

15

casing

16

Housing pin

17th

feather

18th

Level of the fourth core pin 3

Claims (5)

1. Locking cylinder with an associated flat key with a variable stepped profile, the said locking cylinder having small hard-metal plates in the cylinder core (10), characterized in that

   the cylinder core (10) has, on its front and rear side, slot-shaped recesses arranged transversely to its central longitudinal axis,

   a pair (4) of small profiled plates comprising a left-hand and a right-hand small profiled plate (4a and 4b) is situated in the front recess, the said pair extending over the entire height of the key channel (14),

   a pair (5) of small profiled plates having a left-hand and a right-hand small profiled plate (5a and 5b) is arranged in the rear recess (Fig. 3b), the said pair likewise extending over the entire height of the key channel (14),

   the left-hand small profiled plate (4a) has the profile features (6 and 8) and the right-hand small profiled plate (4b) the profile features (7 and 8) of the basic profile,

   the pair (4) of small profiled plates also has the supplementary features (6a, 7a and 8a),

   the pair (5) of small profiled plates contains supplementary features (6a, 7a, 8a, 6b and 7b) in addition to the profile features (6, 7, 8, 9) of the basic profile,

   the supplementary features (6a, 7a, 8a, 6b and 7b) of the pairs (4 and 5) of the small profiled plates are arranged such that they can nest together with the profile features (6, 7, 8, 9) of the basic profile,

   the profile features (6, 7, 8, 9) of the basic profile are arranged throughout the cylinder core (10),

   the associated flat key (12) is adapted by means of grooves to the profile features (6, 7, 8, 9) of the basic profile and to the supplementary features (6a, 7a, 8a, 6b, 7b) in accordance with the position of the pairs (4 and 5) of the small profiled plates in the cylinder core (10).
2. Locking cylinder according to Claim 1, characterized in that in addition to the use of a rear pair (5) of small profiled plates pins placed laterally can be arranged in the cylinder core (10).
3. Locking cylinder according to Claims 1 and 2, characterized in that three or more pairs of small profiled plates and pins on the cylinder core (10) can be distributed over the length thereof.
4. Locking cylinder according to Claims 1 to 3, characterized in that the stepped profile of the associated flat key is arranged in such a manner that the profile features (6, 7, 8, 9) and the supplementary features (6a, 7a, 8a, 6b, 7b) of the front and the rear pair (4 and 5) of small profile plates are of identical design, but the width of the entire profile in the rear pair (5) of small profiled plates is reduced in comparison with the width of the profile in the front pair (4) of small profiled plates.
5. Locking cylinder according to Claims 1 to 4, characterized in that

   an additional, lateral pin (11) is situated in the cylinder core (10) level with a core pin (3),

   a precisely fitting milled portion (13) in the associated flat key (12) is assigned to the additional, lateral pin (11),

   the additional, lateral pin (11) can be arranged level with any desired core pin (3).

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