EP0633373B1 - Cylinder lock with key, groups of such cylinder locks, a key for such a cylinder lock, and a group of keys and key blanks - Google Patents

Abstract

What is proposed is a lock cylinder (16), the key-receiving channel (12) of which and the key (10) of which each have a bottle profile. The bottle profile can be modified for one or for both side faces (10l, 10r). <IMAGE>

Description

The invention relates to a key body of a lock cylinder key, comprising a key handle and a key shaft with one Shaft axis and with a shaft cover profile, the shaft cover profile a the middle plane containing the shaft axis, a back edge surface, a Has a chest edge surface and two side surfaces on either side of the median plane, which is orthogonal to the shaft axis and along the median plane measured shaft height and a measured orthogonal to the median plane Define a variable shaft width along the shaft height, whereby continue at least one side surface at least on part of the shaft height at least one convex-cylindrical curvature surface parallel to the shaft axis has and wherein at least on one of the side surfaces for Shaft axis parallel grooves or / and ribs formed or provided are, which in connection with the shaft cover profile result in a shaft profile.

A key body with such a design of the shaft profile is made known from DE 37 11 935 C2.

In the known design, the shaft profile has a central part its respective height on a circular cylindrical profile part, the axis lies in the central plane of the shaft profile.

There is no variation in the radius of the circular cylindrical profile part intended. Otherwise, such a variation of the circular cylindrical Profile part do not result in great variability, since the radius variation does there are limits to the fact that ultimately a relatively flat key profile and thus channel profile is sought, which is in a pocket, in particular as part of a keychain comprising several keys, easy to classify and carry.

The invention has for its object a key body Specify the genre designated at the beginning, its key shaft profile shape can be varied within wide limits to make a distinction between different keys, especially in Framework of locking systems.

To solve this problem, the invention proposes that the at least one convex-cylindrical curvature surface in at least one a section that runs parallel to the shaft axis Has radius of curvature, which is larger than the distance of this Part of the middle plane.

Further features of the invention emerge from the subclaims.

There are many possible variations in the design according to the invention of the shaft profile in adaptation to corresponding channel profiles of cylinder cores.

The invention can be used in particular when the shaft height at least 2 times, preferably at least 2.5 times, as large as that maximum shaft width and / or that the maximum radius of curvature is approximately 1.5 times up to approx. 6 times the maximum shaft width, preferably at least 2.5 times to at least 5 times. There are then key shaft profiles before, which can be addressed as flat key profiles and can be carried relatively easily in your pocket, even when you are with others Keys are combined on a keychain. Prefers the two side surfaces each have a curved surface. this leads to that an even greater number of channel profiles and accordingly shaft profiles can also be provided.

If one speaks here of convex-cylindrical surfaces, this should be so do not mean that circular cylindrical curvature surfaces are required. Of the Rather, the term "cylindrical surface" is also intended to refer to the shape of a circular cylinder deviating cylindrical surfaces, as is the case in geometry The term "cylinder surface" corresponds. If you consider the term "cylindrical Vault surface "assigns this general meaning, so one can nevertheless individual surface areas of these curved surfaces as circular cylindrical Understand surface areas.

It is conceivable that the respective curvature surface over its entire Extent of height has the maximum radius of curvature, that is circular cylindrical is.

In addition, it is conceivable that the curvature surface only in a central part their vertical extent has the maximum radius of curvature and in at least one end region of its vertical extent is less Has radius of curvature.

It is particularly and preferably provided that the at least a side surface in an envelope profile section close to the back edge surface is designed as a curvature surface and in an envelope profile section close to the chest as a flat surface. Are such flat surfaces in the envelope profile section close to the chest provided, it is advantageous if these flat surfaces are approximately parallel to the median plane.

It is recommended that the curvature surface of an envelope profile section close to the back with a transition angle close to the back of between approx. 70 ° and merges into the back edge surface by approx. 100 °. In this way the Character of a flat key even more pronounced.

If the curvature surface of an envelope profile section close to the back goes into an essential plan, over the breast envelope section, so it is recommended that the curvature surface of the back envelope section with a Transition angle β close to the chest of between approx. 140 and approx. 170 ° in the The flat surface of the envelope section close to the chest merges.

You can add the shaft cover profile and accordingly the channel profile Keys and lock cylinders according to the invention with the shape of a Compare bottle outline if you look at a usual beverage bottle cut in a sectional plane containing the axis of the neck and if you have a viewing direction orthogonal to this section plane is the basis. The back edge surface is preferably the radius of the Core drilling adapted.

The chest edge surface of what is basically conceivable as a key blank Key body can be used to control spring-loaded in a known manner Tumbler pin pairs can be designed with different levels.

At least one of the side surfaces can be rotated with one of the locking cylinder influencing the locking element or security element of the cylinder core interact, for example with a springless one Additional locking pin, as in DE 31 23 511 C2 under the reference number 7 or with a security pin as described in this patent DE 31 23 511 C2 is shown under the reference number 24. In addition, you can also use at least one of the side surfaces allow the cylinder core mounted locking lever to interact as it does in EP-A-0 237 799 is shown under reference number 26.

A side surface acts with the rotational mobility of the cylinder influencing locking element together, it is recommended to at least one of the affected side surfaces in the area of a key shaft tip with an introductory bevel in order to block a Pushing the key shaft into the key channel at the To prevent the key tip from knocking against such a locking element.

The invention further relates to sets of key bodies according to the Claims 19-22, a combination of a key body with a Lock cylinder according to claim 23 and groups of key body lock cylinder combinations according to claims 24-32.

There are groups of key body-lock cylinder combinations different secrecy, where the Shaft envelope profiles are identical within the respective group. The different closing secret within such a group (first-mentioned group) can then be obtained in that the Key shafts of the individual locking cylinders of the group with the same profile from each other by different grooves and / or ribs at least one of the side surfaces and / or by different profile variation of the Chest edge area and / or at least through different profile variation distinguish a side surface. In this way it is possible to use envelope profiles Key shafts and corresponding profile-adapted key channels generate a hierarchical locking system, so for example a locking system with a higher-level key, the a variety of lock cylinders allowed to operate and with one Variety of child keys, each one only to operate individual or a smaller group of locking cylinders allowed.

The grooves can be within a subgroup of such a group or / and ribs over the side surface of the different locking cylinders be arranged similarly distributed and only the cross-sectional dimensions from one another with respect to their position corresponding grooves and / or ribs be different from lock cylinder to lock cylinder. It is especially thought of the possibility that the location mutually corresponding grooves and / or ribs of the individual locking cylinders geometrically similar in their cross-sectional shape, in their cross-sectional size however are different.

For example, one can provide that the location of each other corresponding grooves or / and ribs in their width, measured in Direction of the shaft height, are different, in their penetration depth perpendicular to the central plane, however, are equal to one another.

You can use a given envelope profile, or - depending on the size - also Set up several locking systems.

An upper group of lock cylinder groups (first-mentioned Groups), whereby individual groups within the Upper group by different shaft cover profiles and corresponding ones Distinguish channel profiles. Within such an upper group the shaft cover profiles can differ for the individual groups due to different radii of curvature of the curvature surfaces and / or different centers of the centers of curvature of the Vaulted surfaces.

But other group formations are also possible. So it is after one another type of group formation (second named group) e.g. conceivable that the locking cylinders within a group have different envelope profiles have, while the grooves and / or ribs at least in their Cross-sectional areas near the middle plane from locking cylinder to locking cylinder the group are identical.

An upper group formation is conceivable for this, which is based on the fact that the individual groups with basically the same position of the grooves and / or Ribs in the individual groups due to different cross-sectional shapes the grooves or / and ribs differ from each other.

According to the first group formation, a set of Provide intermediate key blanks for keys of this group, which have the same envelope profile, but different grooves or / and Rib arrangement on at least one side surface. Such a sentence of intermediate key blanks is, for example, in the locking cylinder or key blank factory kept in stock and as needed Attachment of level variations taken. Then one can parent set of intermediate key blank sets in stock are kept in which the key intermediate blanks of each Intermediate blank sets from each other due to different shaft cover profile differentiate.

Furthermore, a set of Key pre-blanks with a missing arrangement of the grooves or / and Ribs are kept ready, with the key pre-blanks being individual Groups by different shape of the shaft cover profile from each other differentiate.

It is also conceivable to use a set of key intermediate blanks for To provide keys of the second-mentioned group of locking cylinders, in which the intermediate blanks of the individual locking cylinders of a group with identical shape of the grooves and / or ribs at least in the central plane close cross-sectional areas from each other by different Distinguish the shape of the shaft cover profile.

Figur 1

einen Querschnitt durch einen Schlüsselschaft eines erfindungsgemäßen Schlüsselkörpers;

Figuren 1a bis 1e

verschiedene Abwandlungen des Schlüsselschafts gemäß Fig. 1 bei gleichbleibendem Schafthüllprofil;

Figuren 2a bis 2e

weitere Abwandlungen des Schlüsselschafts gemäß Fig. 1 mit unterschiedlichen Schafthüllprofilen;

Figur 3

eine weitere Abwandlung des Schlüsselschafts mit einem nochmal geänderten Schafthüllprofil;

Figur 4a

ein Schaftprofil eines erfindungsgemäßen Schlüsselkörpers mit die Seitenflächen des Schlüsselschafts abtastenden Sicherheitsstiften;

Figur 4b

eine Anordnung gemäß Fig. 4a bei Verfälschung des Schaftprofils;

Figur 5

einen erfindungsgemäßen Schlüsselkörper mit federlosen Zusatzsperrstiften in Eingriff mit Profilvariationen der Seitenflächen des Schlüsselschafts;

Figur 5a

eine Seitenansicht des Schlüsselschafts eines Schlüssels gemäß Figur 5;

Figur 5b

einen Schnitt nach Linie Vb-Vb der Fig. 5a;

Figur 5c

einen Schnitt nach Linie Vc-Vc der Fig. 5a;

Figur 6a

eine Schlüsselkörper-Schließzylinderkombination nach der Erfindung mit im Zylinderkern gelagerten, die Seitenflächen des Schlüsselschafts abtastenden Sperrhebeln;

Figur 6b

eine Anordnung gemäß Fig. 6a bei verfälschtem Schlüsselschaft;

Figur 7

eine Anordnung grundsätzlich entsprechend derjenigen nach Fig. 6a, wobei jedoch die Sperrhebel mit Profilvariationen der Seitenflächen des Schlüsselschafts zusammenwirken;

Figur 7a

eine Seitenansicht des Schlüsselschafts gemäß Fig. 7;

Figur 7b

einen Schnitt nach Linie Vllb-Vllb der Fig. 7a und

Figur 7c

einen Schnitt nach Linie Vllc-Vllc der Fig. 7a.

The accompanying figures explain the invention. They represent:

Figure 1

a cross section through a key shaft of a key body according to the invention;

Figures 1a to 1e

different modifications of the key shaft according to Figure 1 with the same shaft cover profile;

Figures 2a to 2e

further modifications of the key shaft according to FIG. 1 with different shaft envelope profiles;

Figure 3

a further modification of the key shaft with a modified shaft sleeve profile;

Figure 4a

a shaft profile of a key body according to the invention with security pins scanning the side surfaces of the key shaft;

Figure 4b

an arrangement according to Figure 4a when falsifying the shaft profile.

Figure 5

a key body according to the invention with springless additional locking pins in engagement with profile variations of the side surfaces of the key shaft;

Figure 5a

a side view of the key shaft of a key according to Figure 5;

Figure 5b

a section along line Vb-Vb of Fig. 5a;

Figure 5c

a section along line Vc-Vc of Fig. 5a;

Figure 6a

a key body lock cylinder combination according to the invention with stored in the cylinder core, the side surfaces of the key shaft scanning locking levers;

Figure 6b

an arrangement according to FIG 6a with falsified key shaft.

Figure 7

an arrangement basically corresponding to that of Figure 6a, but with the locking lever interact with profile variations of the side surfaces of the key shaft.

Figure 7a

a side view of the key shaft according to FIG. 7;

Figure 7b

a section along line Vllb-Vllb of Fig. 7a and

Figure 7c

a section along line Vllc-Vllc of Fig. 7a.

In Fig. 1, a key shaft is generally 10 designated. This key shaft is in a key receiving channel 12 (see Fig.4a) added which is indicated schematically by dash-dotted lines.

The key shaft profile is designated 10a. This Key shaft profile is within a key shaft envelope profile 10b formed by in the key shaft envelope profile 10b milled grooves n1-n4 and m1-m4.

It can be seen that the key shaft cover profile 10b Side surfaces 10l and 10r, by a breast edge surface 10p and a back edge surface 10d is limited. The side surface 10l is in its upper part of the total height h by a circular cylindrical curvature surface 10lg formed, the Center point Mlg lies at the height hg and its radius rg is. It can be seen that the radius rg is considerably larger is as the distance S of the curvature surface 10lg from the Middle plane E-E of the shaft profile and thus also the Shaft envelope profile 10b.

The same applies to the curvature surface 10rd of the right Side surface 10r; this vaulted surface has one Center billion at a height hd and with a radius of approx.

It can also be seen that the side surfaces 10l and 10r in lower portions 10lp and 10rp are flat, the Distances of the partial areas 10lp and 10 rp from the central plane E-E are approximately the same; however, this is not necessary.

Looking at the shaft cover profile 10b, it is unmistakable that this corresponds to the longitudinal section outline of a bottle.

So much for the geometry of a single key shaft.

In Fig. 1a to 1e you can see the same envelope profiles throughout 10b as in Fig. 1. It can also be seen that in all the Modifications according to FIGS. 1a to 1e grooves n1, n2, n3 and n4 as well as m1, m2, m3 and m4 at roughly the same location return and that these grooves in their depth for all Modification profiles of Figures 1a to le are the same; For this be made to the groove n2 of Fig. 1a, in which the Groove n2 distance from the center plane E-E is n2x is designated. This ground clearance n2x also returns in Fig. 1b and again in the following FIGS. 1c to 1e. It is however, it should be noted that the grooves in FIGS. 1d to 1e n2 are suppressed. By the coordinates n2y and n2z in 1a to 1c is indicated that the upper and lower side surfaces of the grooves n2 in their height can vary with appropriate variation of Groove width.

It can thus be seen from FIGS. 1a to 1e that one under Using a constant shaft envelope profile 10b a Can provide a variety of shaft profiles from each other by different shape of the grooves n1 to n4 and m1 to m4 differentiate, with individual grooves entirely can be omitted.

One can now easily imagine that, for example the shaft profiles according to FIGS. 1b and 1c two various, individually closing locking cylinders with complementary key reception channels are assigned, so that each lock cylinder closes individually closed and opened his assigned key can be. Corresponding multiplication of the number individually locking cylinder by corresponding number of Groove variations are possible.

But you can also imagine that you are at Creation of a hierarchical locking system the shaft profiles 1a to 1e used, ie shaft profiles each with an identical shaft cover profile 10b. In this Case could be the shaft profile of Fig. 1a as that Profile of a parent key (parent because the grooves are widest) while the shaft profiles according to FIGS. 1b to 1e individual subordinate Lock cylinders are individually assigned. Specifically, this would mean that the shaft profiles 1b to 1e corresponding locking cylinder one complementary to the individual shaft profiles Have key receiving channel. In the key receiving channels each of these belonging to FIGS. 1b to 1e The locking cylinder would then be the key with the shaft profile 1a fit so that you can with the parent 1a the key to the shaft profiles according to the 1b to 1e can actuate the associated locking cylinder, but not with the keys according to FIGS. 1b to 1e can actuate the lock cylinder belonging to Fig. 1a. So you could give the caretaker one with a locking system equipped key with the profile shape 1a in the hands and the individual room occupants the keys according to FIGS. 1b to 1e, so that that everyone can unlock their own room, not but the neighbor’s room and not the headquarters of the Haumeister while the janitor with the key 1a close and open all rooms could.

It should also be noted that at least the grooves n4 and m4 and the back design of the shaft profile in the area of Back edge surface 10d in all FIGS. 1a to 1e with one another are identical and not modified by the formation of grooves are. The areas adjacent to the grooves are called n4 and m4 and the back edge area 10d therefore "invariance areas. Every key is in these areas of invariance 1a to 1e in the key receiving channel of his associated lock cylinder clearly guided, as well always the remaining grooves and those between the other grooves trained ribs are designed. That way is in every lock cylinder key combination is precise Leadership guaranteed; this is necessary because of how the areas of the pectoral ridges will still have to be executed in detail 10p level-controlled to control pin tumbler pairs and the associated tumbler pairs only then exactly in the locking cylinder opening position can be controlled if the respective key shaft even precisely in the respective key receiving channel is led.

One can the key according to FIGS. 1a to 1e as one View group of keys, that of a group of lock cylinders assigned different locking secrets are. In this case, the envelope profile is the same Key shafts of the individual locking cylinders of the Group (Fig. 1a to 1e) from each other by different Grooves n1-n4, m1-m4 and / or ribs on at least one of the Differentiate side surface 101, 10r. More differentiation options lie in the variation of the chest area 10p. There are further differentiations in Profile variations on the side surfaces 10l, 10r, on the still to be dealt with.

If you want from the keys, according to Fig. 1a to 1e, locking systems build, the choice of variation depends on the scope the respective locking system. One can, for example, in a small locking system the variation of locking cylinder to lock cylinder or key to key only due to the position and dimension variation of the grooves make. With a larger locking system can be used for the purpose of Distinctness of subordinate locking cylinders within the system also the level variations in the area of the side surfaces 10r, 10l can be used to make safety pins and / or to control springless additional locking pins on the will still be discussed.

You can also make distinctions between individuals Lock cylinders and their keys by different Meet the profile variation in the area of the 1P chest edge, then in series with the 10p pin tumbler pairs to be controlled still intermediate plates can provide that allow, even with different Single locking cylinders equipped with profiles on the chest edge surface to solve by a superordinate key or to lock.

One can therefore have a sub-group corresponding to FIGS. 1a-1e of lock cylinders with the same envelope profile 10b Key receiving channel and the associated key by creating the grooves n1 to n4 and m1 to m4 distributed similarly over the side surfaces 10l, 10r, but the Cross-sectional dimensions of the grooves n1 to n4, m1 to m4 or / and ribs of locking cylinders, e.g. Fig. 1a, too Locking cylinder, e.g. Fig. 1e, at least partially makes different. It is especially thought that the grooves and / or ribs of the individual locking cylinders geometrically similar in cross section in their Cross-sectional size, however, are different. Prefers you only vary the shape of the grooves and ribs in their Width, i.e. in dimension parallel to the total height of the Shank while looking perpendicular to the depth of penetration of the grooves to the middle plane, i.e. so that in all If the ground clearance n2x according to FIG. 1a is the same. These requirements are particularly important because in this way to obtain the individual shaft profiles and channel profiles with similar broaching and milling tools what comes for the key shaft manufacturer and the Lock cylinder manufacturer is advantageous. The security against unauthorized imitation of key shafts nevertheless guaranteed, if only because the Milling the grooves n1 to n4 and m1 to m4 in the side surfaces 10l and 10r through the curvature surfaces 10lg and 10rd is very difficult. To be able to mill the grooves in such a way that them with the key receiving channel assigned to them fit together, it needs to be used in each case Groove-milling machines of special clamping tools that are connected to the respective curvature surface either by complementary Contact surfaces are adjusted or by adjustable Support tracks can be adjusted.

Warehousing and, if necessary, the supply of key services can be done in such a way that a sentence of Key intermediate blanks, which consistently have the same envelope profile as in Fig. 1a to le shown, but different groove design Differentiate n1 to n4, m1 to m4. Is in the factory warehouse or at the locksmith Set of key intermediate blanks, for example for an arrangement 1a to 1e, present, so needs for a particular Key requirements for a specific locking cylinder only the respective intermediate key blank is selected to become; on this level variations in the Chest edge surfaces 10p and / or the side surfaces 10l and 10r be incorporated.

Further variation possibilities are in the Fig. 2a to 2e indicated. recognizes different in FIGS. 2a to 2e Envelope profiles 10ba, 10bb, 10bc, 10bd, 10be. One notices 2a to 2e at the different radii rda, rdb ..., rga, rgb ... and at the different height coordinates hda, hdb ... as well as hga, hgb ... the center of curvature Mrda, billion ... or Mlga, Mlgb ... the different Possibilities of variation of the envelope profiles.

It can further be seen from FIGS. 2a to 2e that the angle between the back edge surface 10da and the bulge surface 10rda, which is labeled α in FIG. 2a, between approximately 70 ° and is about 100 °, and you can also see a transition angle β between the arch surface 10rda and the flat surface 10rpa, which is usually between 140 and 170 °.

By choosing the radii of curvature rda, rga ... and the Height coordinates hda, hga ... can be the transition points between the curvature surfaces 10rda, ... and the flat surfaces 10rpa, ... can also be varied, which in Fig. 2b at ülb and are indicated in Fig. 2c at ülc.

Grooves can also be milled in FIGS. 2a to 2e as already indicated in Fig. 1a to 1e. You can regardless of the respective envelope profile grooving-milling rolls use the same geometry, which for the manufacturer again is advantageous. By choosing different envelope profiles can be the number of different locking cylinders be raised very much, regardless of whether one single locking locking cylinders or locking systems wants to provide. For example, you can imagine that one from each of the envelope profiles according to FIGS. 2a to 2e builds a locking system according to the principle of the slot position or dimension variation according to FIGS. 1a to 1e. One can also with regard to FIGS. 2a and 2e speak an upper group of lock cylinder groups, whereby each of the individual FIGS. 2a to 2e a group with each represents the same shaft cover profile. Such a group according to one of FIGS. 2a to 2e, it can also be divided into several Subgroups are divided, each approximately according to 1a to 1e is built, in which within this Subgroup the groove distribution basically similar to that Groove dimensioning, however, from lock cylinder to lock cylinder or key shaft to key shaft different is. Other subgroups can then differ from the Subgroup according to Fig. 1a to 1e by different Differentiate groove distribution.

In principle, however, it is also conceivable for locking cylinders and group related keys in groups in such a way that in each group the groove distribution and Dimensioning basically the same, but the envelope profiles are different. Then you could be in a locking system resulting from such, e.g. 2a to 2e corresponding The individual locking cylinders and the associated keys through different envelope profiles distinguish, where the parent key slimest envelope profile would have to be assigned.

For storage in the factory, a central warehouse or The following applies to a locksmith:

For a group of locking cylinders, for example according to FIG. 2a, a set of intermediate key blanks is provided, which consistently have the same envelope profile and corresponding to the individual locking cylinders of the Group from each other through different grooves - or / and Rib arrangement - distinguish approximately according to Fig. 1a to 1e. For a higher-level group of locking cylinders, i.e. one Upper group of several groups of locking cylinders corresponding to several envelope profiles according to FIGS. 2a to 2e then becomes a parent set of intermediate key blank sets held ready, the individual Intermediate key blank sets from each other by different Distinguish shaft cover profile.

If you use the other type of group formation indicated above, this basically results in a set of intermediate blanks same groove arrangement, the individual Intermediate key blanks within the set by different ones Distinguish shaft cover profiles. Here too again a subgroup formation is conceivable.

One can also consider pre-keying on To keep stock that only when necessary to the respective Lock cylinder can be adjusted by grooving. In in this case one becomes a set of key blanks with still missing arrangement of the grooves or / and ribs Keep stock, with the individual key blanks due to different shape of the shaft envelope profile according to FIG. Distinguish 2a to 2e.

In Fig. 3 it is indicated that it is in no way necessary the curvature surfaces 10lg over their entire height with a uniform radius of curvature. One notices rather, in Fig. 3, that on a central curvature surface 10lgm radius of curvature upper and lower curvature surfaces Connect 10lgo and 10lgu small radius of curvature can.

4a and 4b each show a locking cylinder 16 with a core bore 18 and one in this Core bore 18 rotatably mounted lock cylinder core 20 with a key receiving channel 12 for a key shaft 10. The key shaft 10 has the shape of the key shaft, 1, and a corresponding profiling has the key receiving channel 12. The locking cylinder 16 has a lock cylinder housing 24 with a cock profile. In which are the profile bag 26 of the lock cylinder housing 24 Bores 28 for receiving housing pins 30a intended. These housing pins 30a are 32 in by springs Direction towards the axis A of the lock cylinder core 20 biased and cooperate with core pins 30b. The Core pins 30b are in corresponding core holes 34 added. The core bores 34 intersect the key receiving channel 12 on. The radially inner ends of the core pins 30b work with a profile variation on the chest edge surface 10p of the key shaft 10 together. The design the profile variation on the chest edge surface 10p is more common Kind; it is selected so that when the closing secret is inserted Key 10, the housing pins 30a and core pins 30b as shown in Fig. 4a, in the radial direction are ordered. Then the separating surface 36 lies between belonging together, forming a pair of pin tumblers 30 Housing pins 30a and core pins 30b in continuation of Inner circumferential surface of the core bore 18.

If this condition applies to all in a row in the axial direction A. arranged pin tumbler pairs is fulfilled - and it is met if the lock secret key is inserted - the cylinder core 20 can be rotated. The profile variation on the chest edge surface 10p is an additional one Possibility of individualizing individual locking cylinders.

Fig. 4a further shows that in the lock cylinder core 20 a mushroom-shaped in a stepped safety pin bore 38 Security pin 40 is included. The meaning of such a security pin is shown in detail in DE-C2 31 23 511, with position 24 is referred. For a brief explanation of such a safety pin the following:

The safety pin 40 lies with its inner end cap 40a on the intact curvature surface 10lg of the shaft profile of the key shaft 10. The total length of the mushroom-shaped safety pin 40 between its inner End cap 40a and its outer end cap 40b is chosen that when the lock cylinder core 20 rotates, the outer End cap 40b with the inner peripheral surface of the core hole 18 coincides and thus the cylinder core 20 undisturbed the housing pin bore 28 can be rotated away. Of course, this assumes that the housing pin bore 28 and the core pin bore 34 in the same for Axis A orthogonal plane lie like the security pin 40.

Should now be tried, as shown in Fig. 4b, with a wrong key whose domes 10lg 'ground off or filed, the lock cylinder core 20 to turn, this is noticed by the safety pin 40, in which this one within the safety pin bore 38 occupies a recessed position. Then, as in Fig. 4b shown, the housing pin 30a radially inward penetrate and with an edge 44 of a recess 46 of the Lock cylinder core 20 engage and thus the Inhibit further rotation of the lock cylinder core 20. It will So by using the security pin 40 one additional security against unauthorized opening of the locking cylinder reached by an unauthorized person Avoiding key shaft adjustment to the channel profile the curvature surfaces 10lg according to Fig. 4b to a flat surface 10lg 'grinds off. Fig. 4a shows that two or several such safety pins can be provided.

5 shows the locking cylinder according to FIGS. 4a and 4b in another section plane again orthogonal to axis A. 5 shows a springless additional locking pin 48 with an inner tip 48a and an outer tip 48b. Here is in the bulge area 10lg or alternatively in the Flat surface 10lp a recess 50 as part of a profile variation drilled or milled. This recess is in depth to the length of the springless additional locking pin 48 (measured from crest 48a to crest 48b), that when the correct closing secret is inserted Key 10, the tip 48b tangentially on the outer peripheral surface of the cylinder core 20 and thus also on the inner peripheral surface the core bore 18 abuts. Then he can Lock cylinder core 20 are rotated through 360 °. Will the Key 10 is pulled or inserted, so by the in 5 of the flanks of the recess 50, not shown springless additional locking pin 48 moved radially outwards and dips into a crescent-shaped longitudinal groove 52 on the Inner circumferential surface of the core bore 18. The pulling and Inserting the key 10 is not inhibited for so long the lock-secret key is used. Becomes a wrong key is inserted, which either no or only has an insufficient depth recess 50, so can the key is either not inserted at all or but the lock cylinder core 20 cannot be rotated, because at the start of a turning attempt the springless additional locking pin 48 with his crest 48b in the crescent shape Profile channel 52 is immersed.

Springless additional locking pins 48 as shown in FIG. 5 and safety pins 40 according to FIGS. 4c and 4b can complement each other be, as described in detail in DE-C2 31 23 511 and shown. They can also be added blind pins described and drawn in DE-C2 31 23 511 (see position 38 in DE-C2 31 23 511). The Safety pins, locking pins and possibly blind pins can consistently in planes orthogonal to axis A. be arranged, which also the tumbler pin 30th contain. In the case of springless additional locking pins However, it is also conceivable that this is in the axis orthogonal planes, which lie between each other following tumbler pin pairs are arranged.

It is readily understood that with reference to 4a to 5 design measures described additional customization options for the invention Lock cylinders are available, regardless of whether these as individual locking cylinders or as parts of one Locking system are used.

5a shows a key 10 for use in a locking cylinder 16 according to FIGS. 4a to 5. One can see in Fig. 5a, the recesses 50 in the curvature surface 10rd, the for interaction with springless additional locking pins 48 (see Fig. 5) are determined. You can see the possibility here the additional locking pins 48 in several orthogonal to the axis A. Arrange levels one after the other and you can also see the control surfaces 50a on the edge of the recesses 50, which for Push the springless additional locking pins back into the Crescent-shaped longitudinal groove 52 are determined. One notices also at the top of the key 10 two ramp ramps 54, which are also shown in Fig. 5c. These ramp ramps serve the springless when inserting the key 10 Additional locking pins 48 from the position shown in FIG. 5 in to push back the crescent-shaped grooves 52.

In Fig. 5a you can also see a handle on the key 10 56. This key handle can basically be flat. It is also conceivable, according to the profile of the key shaft 5b continue into the grip area 56. This depends depends on the key production method. Basically can the key consisting of a shaft section and a handle part 56 can be assembled by soldering or welding, for example then when the key profile is extruded. But it is also conceivable to obtain the entire key by embossing, wherein the curvature surfaces 10rd and 10lg are formed by embossing or milling and in the grip area 56 whose flat side surfaces.

6a and 6b is a further embodiment of a Lock cylinder shown. Analog parts are included the same reference numerals as in FIGS. 1 to 5. In this embodiment, a key can be recognized again 110 with a shaft profile corresponding to that in FIGS 4a to 5. In this embodiment, in Orthogonal planes to axis A, weave opposite the planes of the tumbler pin pairs are axially offset, locking lever 160 pivoted about locking lever pivot pins 162. Because of Details of this embodiment are given in EP-A2 237,799. The following brief explanation is sufficient:

The locking levers 160 are pivotable about the pivot pins 162. The two ends 160a and 160b of the pivot lever 160 are as Engagement hook for engagement in recesses 165 and 167 respectively the inner peripheral surface of the core bore 118. The Ends 160a are for scanning the curvature surfaces 110lg and 110rd trained; they scan over styli 166, which the intact shaft profile of the locking secret Key 110 in the area of the curved surfaces 110lg and 110rd are applied under the action of the helical compression springs 168, which on the lower ends 160b of the Act on locking lever 160. If the right secret matched Key is inserted, so the two lie Ends 160a and 160b flush with the inner peripheral surface of the Core bore 118 so that the lock cylinder core 120 is rotated can be, provided the other requirements for the Rotation of the lock cylinder core are met. Becomes a wrong key, e.g. a filed key 110 ' stuck with sanded side surfaces 110lg 'and 110rd', so the locking levers 160 are shown in FIG. 6b Pivoted position so that the lower ends 160b in hook the recesses 167 and the rotation of the lock cylinder core 120, on which the locking lever 160 is mounted are blocked.

The locking lever 160 are in axially normal slots 170 des Lock cylinder core 120 added. These slots 170 are expanded by holes 172. You can either in provide a locking lever 160 in a slot 170 or - omitting the locking lever - in bore 172, the listened to this slot, insert a safety pin as has been shown at 40 in FIGS. 4a and 4b and with this safety pin the bulge 110lg or 110rd scan and a similar blocking effects achieve as shown in Fig. 4b and in the associated Description is described.

7 shows a further embodiment of a locking cylinder shown. But it can also be a cut by the arrangement according to FIG. 6 in a different orthogonal plane be. Here again locking lever 260 are shown, which uses stylus 266 profile variations in the area of Scan bulges 210lg, 210rd. These profile variations are designated in the form of recesses 250 in FIG. 7 shown. If the right secret matched Key 210 is inserted, so are the locking levers 260 adjusted in its swivel position so that it with their ends 260a and 260b out of engagement with the recesses 265 and 267 are rotated and the lock cylinder core can be. If a wrong key is inserted, its Recesses 250 are not adapted to the locking secret, one of the ends 260a engages in one of the recesses 265, 267 a, with the result that the locking cylinder is blocked. Here too, details are given on the References of EP-A2 237 799 referenced. You can see that one also by the locking lever according to FIGS. 6a, 6b or / and Fig. 7, the individualization of the lock cylinder and Key can push even further.

A key shaft 210 can be seen in FIGS. 7a to 7c, which is an upper row of recesses 250 for cooperation with the stylus 266 and a lower Series of recesses 251 to interact with springless Additional locking pins, which are in the slot-enlarged holes 272 can be included, as far as the respective Slots are not assigned locking levers. At the tip of the key 7a and 7c again show introductory slopes 254, which when inserting the key 210 the stylus 266 or the springless additional locking pins push the holes 272 outwards.

Referring to Figures 5a, 5b and 7a, 7b is still note that due to the convex curvature of the key side surfaces also drilling the recesses or Calottes, as far as these are in the convex domed areas are difficult because the drill slide off tried, unless a device for each Key shaft with a customized guide for each There is a drill or milling cutter.

Regarding the height of the vaulted surfaces, it should also be noted that this prefers about two thirds of the total shaft height h extends. The heights of the vaulted surfaces can increase both sides of a key are the same or different be.

Claims (32)

1. A key body (10, 56) of a cylinder lock key, comprising a key handle (56) and a key shank (10) with a shank axis (A) and with an enveloping shank profile (10b), the enveloping shank profile (10b) comprising a central plane (E-E) containing the shank axis (A), a spine edge face (10d), a breast edge face (10p) and two side faces (10l, 10r) on each side of the central plane (E-E), which define a shank height (h) measured orthogonally with respect to the shank axis (A) and along the central plane (E-E) and a shank width (2S) measured orthogonally with respect to the central plane (E-E) and variable over the shank height (h),
   wherein, in addition, at least one side face (10l, 10r) comprises, at least over part of the shank height (h), at least one convex-cylindrical curved face (10lg, 10rd) parallel with the shank axis (A), and wherein grooves (n1-n4, m1-m4) and/or ribs parallel with the shank axis (A) are formed or provided at least on one of the side faces (10l, 10r), which grooves (n1-n4, m1-m4) and/or ribs, in conjunction with the enveloping shank profile (10b), provide a shank profile (10a),
   characterised in that the at least one convex-cylindrical curved face (10lg, 10rd) has a maximum radius of curvature (rg, rd), at least over a portion extending parallel to the shank axis (A), which is greater than the distance (S) between this portion and the central plane (E-E).
2. A key body according to claim 1, characterised in that the shank height (h) is at least twice, preferably at least 2.5 times, as great as the maximum shank width (2s) and/or that the maximum radius of curvature (rg, rd) corresponds to from approximately 1.5 to approximately 6 times the maximum shank width, preferably at least 2.5 times to at least 5 times.
3. A key body according to either one of claims 1 and 2, characterised in that the two side faces (10l, 10r) each have at least one curved face (10lg, 10rd).
4. A key body according to any one of claims 1 to 3, characterised in that the curved face (10lg, 10rd) exhibits the maximum radius of curvature (rg, rd) over the full extent of its height.
5. A key body according to any one of claims 1 to 4, characterised in that the curved face (10lg) exhibits different radii of curvature (10lgm, 10lgo, 10lgu) over the full extent of its height.
6. A key body according to claim 5, characterised in that the curved face (10lg, 10rd) exhibits the maximum radius of curvature in the central part (10lgm) of its height and a smaller radius of curvature in at least one end area (10lgo, 10lgu) of its height.
7. A key body according to any one of claims 1 to 6, characterised in that the at least one side face (10l, 10r) takes the form of a curved face (10lg, 10rd) in an envelope profile portion in the vicinity of the spine edge face (10d) and of a flat face (10lp, 10rp) in an envelope profile portion in the vicinity of the breast edge face (10p).
8. A key body according to claim 7, characterised in that the flat face (10lp, 10rp) of the envelope profile portion in the vicinity of the breast lies obliquely or approximately parallel to the central plane (E-E).
9. A key body according to either one of claims 7 and 8, characterised in that the curved face (10lga, 10rda) of the envelope profile portion in the vicinity of the spine merges with the spine edge face (10da) at a transition angle (α) in the vicinity of the spine of between approximately 70° and approximately 100°.
10. A key body according to any one of claims 7 to 9, characterised in that the curved face (10lga, 10rda) of the envelope profile portion in the vicinity of the spine merges with the flat face (10rpa) of the envelope profile portion in the vicinity of the breast at a transition angle (β) in the vicinity of the breast of between approximately 140° and approximately 170°.
11. A key body according to any one of claims 1 to 10, characterised in that the enveloping shank profile (10b) is shaped approximately like the outline of a bottle.
12. A key body according to any one of claims 1 to 11, characterised in that the spine edge face (10d) is rounded.
13. A key body according to any one of claims 1 to 12, characterised in that the breast edge face (10p) has different levels to control spring-loaded pin tumbler pairs (30a, 30b).
14. A key body according to any one of claims 1 to 13, characterised in that at least one of the side faces (10l, 10r) is designed to interact with a retaining element or security element (40; 48; 160; 260) of a cylinder plug (20; 120; 220), which retaining element or security element (40; 48; 160; 260) influences the rotatability of the cylinder plug (20; 120; 220).
15. A key body according to claim 14, characterised in that at least one of the side faces (10l, 10r) is designed to interact with at least one springless auxiliary locking pin (48) of the cylinder plug (20).
16. A key body according to claim 14 or claim 15, characterised in that at least one of the side faces (10l, 10r) is designed to interact with at least one security pin (40) of the cylinder plug (20).
17. A key body according to any one of claims 14 to 16, characterised in that at least one of the side faces (110l, 110r, 210l, 210r) is designed to interact with a locking lever (160, 260) mounted on the cylinder plug (120; 220).
18. A key body according to any one of claims 14 to 17, characterised in that at least one of the side faces (10l, 10r) is provided with a bevelled insertion portion (54; 254) in the area of one key shank tip.
19. A set of key bodies according to any one of claims 1 to 18, especially for hierarchically designed lock installations, characterised in that the key bodies of the set (Figs. 1a-1e) each have like enveloping shank profiles (10b) and different groove and/or rib arrangements on at least one side face (10l, 10r).
20. A set of key bodies according to claim 19 in context of a multiple set of such sets, characterised in that the key bodies of the set differ from those of other sets in the multiple set by different enveloping shank profiles (10ba, 10bb ...).
21. A set of key bodies according to any one of claims 1 to 18, especially for hierarchically designed lock installations, characterised in that the key bodies differ from each other by different shapes of enveloping shank profile (10ba, 10bb, ...).
22. A set of key bodies according to any one of claims 1 to 18, especially for hierarchically designed lock installations, characterised in that the key bodies, while having grooves (n1-n4, m1-m4) and/or ribs of identical shape, at least in the cross-sectional areas thereof in the vicinity of the central plane, differ from each other by different shapes of enveloping shank profile.
23. A combination of a key body according to any one of claims 1 to 18 with a cylinder lock conformed to the lock code, the latter comprising a cylinder lock housing (24) with a plug bore (18) having a plug bore axis (A) and a cylinder plug (20) mounted in the plug bore (18) so as to be rotatable about the plug bore axis (A), which cylinder plug (20) has a key receiving channel (12) which is substantially parallel to the plug bore axis (A) and has a channel profile to which the profile of the key shank is conformed for insertion into the key receiving channel.
24. A group of key body/cylinder lock combinations according to claim 23 with different lock codes, especially for hierarchically designed lock installations, characterised in that the enveloping shank profiles (10b) of the individual combinations are of identical construction.
25. A group of key body/cylinder lock combinations according to claim 24, characterised in that the key shanks of like enveloping profile of the individual cylinder locks (Figs. 1a-1e) of the group differ from each other by different grooves (n1-n4, m1-m4) and/or ribs on at least one of the side faces (10l, 10r) and/or by different variations in the profile of the breast edge face (10p) and/or by different variations in the profile of at least one side face (10l, 10r).
26. A group of key body/cylinder lock combinations according to either one of claims 24 to 25, characterised in that, within a subgroup (Figs. 1a-1e) of this group, the distribution of the grooves (n1-n4, m1-m4) and/or ribs over the side faces (10l, 10r) is fundamentally the same for the various cylinder locks (Figs. 1a-1e), whereas the cross-sectional dimensions of grooves (n1-n4, m1-m4) and/or ribs of corresponding position differ at least partially from cylinder lock (Fig. 1a) to cylinder lock (Fig. 1e).
27. A group of key body/cylinder lock combinations according to claim 26, characterised in that the grooves (n1-n4, m1-m4) and/or ribs of corresponding position of the individual cylinder locks (Figs. 1a-1e) are geometrically alike in cross-sectional shape, but different in cross-sectional size.
28. A group of key body/cylinder lock combinations according to claim 27, characterised in that the grooves (n1-n4, ml-m4) and/or ribs of corresponding position differ in their width, measured in the direction of the shank height (h), but are alike in their penetration depth (n2x) perpendicular to the central plane (E-E).
29. A group of key body/cylinder lock combinations according to any one of claims 24 to 28 in the context of a superordinate group comprising several such groups, characterised in that the group differs from other groups in the superordinate group by different enveloping shank profiles (10b1, 10bb, 10bc ...) and the channel profiles corresponding thereto.
30. A group of key body/cylinder lock combinations according to claim 29, characterised in that the enveloping shank profiles (10ba, 10bb...) of the groups (Figs. 2a-2e) differ from those of other groups by difference radii of curvature (rda, rdb ...) of the curved faces (10lga, 10lgb ...) and/or different centre positions (Mrda, Mrdb, ...) of the centres of curvature of the curved faces (10lga, 10lgb, ...) or portions thereof.
31. A group of key body/cylinder lock combinations according to claim 23 with different lock codes, especially for hierarchically designed lock installations, characterised in that the cylinder locks within the group have different enveloping shank profiles (10ba, 10bc), while the grooves and/or ribs are of identical construction from cylinder lock (Fig. 2a) to cylinder lock (Fig. 2c) of the group (Figs. 2a-2e) at least in their cross-sectional areas in the vicinity of the central plane.
32. A group of key body/cylinder lock combinations according to claim 31 in the context of a superordinate group comprising several such groups, characterised in that, when the grooves and/or ribs in the individual groups are in basically the same position, the group differs from other groups of the superordinate group by different cross-sectional shapes of the grooves and/or ribs.

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