EP3354826B1 - Improved key for a lock cylinder, closing device and method - Google Patents

Description

The present invention relates to a key for a lock cylinder, the key having a key shaft extending along a longitudinal direction with two key broadside faces, the key shank having a recess through the key broadside faces, and in the recess at least two movable members in a spatial direction perpendicular to each other to the longitudinal direction and parallel to the key broadside side surfaces, are arranged side by side. Furthermore, the present invention relates to a locking device with a key and a lock cylinder. Furthermore, the present invention relates to a method for producing a key according to the invention for a locking device.

Such key and lock cylinder are for example from the document DE 100 58 590 C1 known.

This document shows a key for a lock cylinder with a cooperating with the core pins of the lock cylinder locking recesses key shank in which a spacer is movably mounted, the direction of movement is inclined by an angle of approximately 45 ° to the key broadside. In this case, the spacer is a arranged in a slanted slot of the key bit ring, which is interspersed with a stuck in an oblique bore of the key broadside side pin with movement play.

Such keys with movable elements are basically known in the art. They serve to increase the counterfeit security of the key. Furthermore, they serve to increase the security of a consisting of the key and an associated lock cylinder locking device. The movable elements increase the possibility of safety-related queries in a lock cylinder and thus increase the security against unauthorized unlocking of the lock cylinder.

For example, further shows the document EP 1 662 077 A1 a key with a movably arranged ring rotatably mounted on a pin.

Furthermore, the documents show DE 699 16 570 T2 and DE 699 20 530 T2 a key in which also a ring is rotatably mounted on a shaft.

In addition, the document shows EP 2 754 792 A1 another key with a recess, wherein a plurality of shafts extending transversely through the recess and the key shank, and wherein on each shaft exactly one ring is rotatably mounted without play.

Furthermore, the document shows FR 2 762 345 A1 a key with two recesses, wherein each of the recesses is penetrated by a respective shaft and in each of the recesses a single movable element is arranged.

Furthermore, the document shows DE 10 2015 111 914 A1 a key for a lock cylinder, the key extending along a longitudinal direction Key shank having two key broad side surfaces, wherein the key shank has a recess through the key broad side surfaces, wherein a shaft extends through the recess, and wherein the shaft is rotationally fixed in the key shank, wherein in the recess at least two rings are arranged on the shaft side by side, wherein an inner diameter of each ring is larger than an outer diameter of the shaft.

The known keys have a key with a recess, a shaft and movable elements, wherein the shaft passes through the recess and the movable elements are arranged in the recess on the shaft. For this purpose, the movable elements have a hole and are formed, for example, as a ring. The shaft is inserted in a through hole which passes through the key shank and the recess from a key narrow side surface to the other key narrow side surface. In particular, the making of the hole requires a high degree of precision, since the movable elements must be kept in a precise position. Furthermore, during the insertion of the shaft into the key shank, the movable members in the recess must be arranged and held so that the shaft is guided through the bore in the movable members. This also requires a high degree of precision. After that, the shaft must be fixed in the key shaft. The introduction and fixing of the movable elements therefore comprises a series of partly complicated steps.

The publication WO 2009/147660 A2 shows locking mechanisms and in particular key blanks for use with cylinder locks.

Based on this prior art, it is an object of the present invention to provide an improved key and an improved locking device, which are much easier to manufacture with a constant degree of security, and a method for doing so.

According to a first aspect of the invention, therefore, there is provided a key for a lock cylinder, the key extending along a longitudinal direction extending key shank having two key broadside faces, wherein the key shank has a recess through the key broadside faces, wherein in the recess at least two movable elements in a first spatial direction, which is perpendicular to the longitudinal direction and parallel to the key broadside faces, juxtaposed, wherein the key to each key broadside side surface has at least one holding section which extends into the recess, wherein an extension of the recess in a second spatial direction which is parallel to the key broadside faces, in the region of the holding sections is smaller than a maximum total extension of the at least two movable elements in the second spatial direction such that each of the at least two movable elements is secured in the recess, wherein the recess has a substantially rectangular base plane perpendicular to the third spatial direction has.

Here, the term "movable element" refers to an element which may initially have any surface contour. For example, as a movable elements, a ring, a disc, a ball or a cube may be provided. The word movable in the term "movable element" is to be understood as meaning that the element is movably arranged. Thus, it follows that the movable elements are arranged in the recess such that they are movable in at least one spatial direction. There are at least two movable elements arranged side by side. In particular, the movable elements are each arranged directly next to one another. "Side by side" means that the movable elements are adjacent, in particular immediately adjacent to each other. There are thus no sleeve elements, spacers or other elements between the movable elements. The movable elements can in particular rest against one another. It goes without saying that a certain amount of play is maintained in order to enable, for example, a rotation of the movable elements relative to one another or a translatory movement of the movable elements relative to one another.

The term "extension" generally describes a certain spatial extent. Accordingly, the extent of the recess in a spatial direction parallel to the key broadside surfaces is to be understood as a spatial extension into this spatial direction. The maximum extent of the at least two movable elements in the same Direction of space is to be understood as the greatest possible extent of the at least two movable elements in this spatial direction.

Characterized in that the extension of the recess in the second spatial direction in the region of the holding portion is smaller than the maximum extent of the at least two movable elements, the movable elements are secured in the recess. In other words, the recess and the at least one holding portion are formed so that the at least two movable elements are secured in the recess. In this case, the term "secured" denotes a spatial restriction of the at least two movable elements. This means that the at least two movable elements are so limited in space that they can not or only partially leave the area between the two key broadside faces. Thus, the movable elements can not fall out of the recess. Thus it is clear that the movement of the movable elements is limited perpendicular to the key broadside surfaces. In particular, it can also be provided that the at least two movable elements are held by the at least one holding section on each of the key broadside side surfaces.

The key thus does not have a wave. The movable elements are secured by the holding portions in the recess. The movable elements are positionable and movable in the key, as is the case with a wrench with a shaft. Accordingly, the degree of security of a key according to the invention is at least as high as that of a similar key with a shaft. By omitting the wave, in particular, the number of manufacturing steps is shortened and costs are saved. Furthermore, this creates more freedom for the variations of the key profile.

The term "degree of security" here means the number and complexity of the security features, for example pens, recesses, etc., as well as the complexity of the relative arrangement of the security features of the key and the lock cylinder relative to one another.

A rectangular shape of the base of the recess is particularly suitable for arranging therein symmetrically formed movable elements, such as discs, fitted.

According to a further aspect of the invention, a locking device with a key according to the first aspect of the invention or one of its embodiments and with a lock cylinder is proposed, wherein the lock cylinder comprises a housing and a cylinder core, wherein the lock cylinder has at least one locking fuse, wherein the at least one Barrier lock between a locked state and a release state is movable and locks a rotational movement of the cylinder core relative to the housing in the locked state and releases in the release state, wherein at least one movable element is associated with one of the at least one locking fuse, and wherein the lock cylinder by fully inserting the bowl in a key channel of the cylinder core is transferred from the locked state to the release state, wherein the cylinder core for at least one movable element associated with the associated locking fuse support pin and wherein by inserting the at least one movable element between the associated support pin and the associated locking fuse, the associated locking fuse is movable into the release state.

By means of the proposed locking device, it is possible to query at least one movable element due to the at least one locking fuse. If several locking devices are provided, it is possible to query several movable elements individually or separately from one another. A blocking fuse may in particular be a pin tumbler. In addition, however, further locking devices or pin tumblers can be provided to query other features of the bowl in the closing device. A "support pin" refers to a pin which is fixedly arranged in the cylinder core, for example by pressing. The pin is thus not movable and deflects the respective associated movable element in the fully inserted position of the key. It then supports the movable element against the respective associated locking device or pin tumbler so that the locking device or pin tumbler is moved into the release state by means of the movable element supported by the support pin. Instead of the term "support pin" For example, the term "deflection pin" can also be used. The locking device is thus movable from the locked state to the release state only when the bowl actually has a corresponding number of movable elements that can be deflected independently of each other by the support pins. The safety of the locking device is thus ensured. If the lock cylinder has exactly one locking safeguard, which is assigned to exactly one movable element, the lock cylinder must be manufactured with the least possible effort. If the key is designed, for example, as a reversible key, the blocking safety device interrogates one of the movable elements in a first insertion position of the key. If the key is rotated, the locking device in a second insertion position of the key queries another of the movable elements.

• Bereitstellen eines Schlüsselrohlings, wobei der Schlüsselrohling einen sich entlang einer Längsrichtung erstreckenden Schlüsselschaft mit zwei Schlüsselbreitseitenflächen aufweist, wobei der Schlüsselschaft eine Aussparung durch die Schlüsselbreitseitenflächen aufweist, und wobei der Schlüsselrohling an einer ersten Schlüsselbreitseitenfläche mindestens einen ersten Halteabschnitt aufweist, der sich in die Aussparung erstreckt, wobei eine Erstreckung der Aussparung in eine zweite Raumrichtung, die parallel zu den Schlüsselbreitseitenflächen verläuft, im Bereich des ersten Halteabschnitts verkleinert ist, wobei die Aussparung durch Bohren und Fräsen so ausgebildet wird, dass die Aussparung eine senkrecht zu der dritten Raumrichtung liegende, im Wesentlichen rechteckige Grundfläche aufweist,
• Einsetzen von mindestens zwei bewegbaren Elementen in die Aussparung, so dass die mindestens zwei bewegbaren Elemente in der Aussparung in einer ersten Raumrichtung, die senkrecht zu der Längsrichtung und parallel zu den Schlüsselbreitseitenflächen verläuft nebeneinander angeordnet sind, wobei die Erstreckung der Aussparung im Bereich des ersten Halteabschnitts kleiner ist als eine maximale Erstreckung der mindestens zwei bewegbaren Elemente in die zweite Raumrichtung, und
• Umformen, insbesondere Kaltumformen oder Kaltmassivumformen, der Aussparung, insbesondere mindestens einer Kante der Aussparung, auf einer zweiten Schlüsselbreitseitenfläche, um mindestens einen zweiten Halteabschnitt auszubilden, der sich in die Aussparung erstreckt, so dass eine Erstreckung der Aussparung in die zweite Raumrichtung im Bereich des zweiten Halteabschnitts kleiner ist als die maximale Erstreckung der mindestens zwei bewegbaren Elemente in die zweite Raumrichtung.

According to a further aspect of the invention, a method for producing a key for a closing device is proposed, which comprises the following steps:

• Providing a key blank, the key blank having a keyway extending along a longitudinal direction and having two key broadside faces, the key bit having a recess through the key broadside faces, and the key blank having at least a first retaining portion extending into the recess at a first key broadside face; wherein an extension of the recess in a second spatial direction, which is parallel to the key broad side surfaces, is reduced in the region of the first holding portion, wherein the recess is formed by drilling and milling so that the recess is a substantially rectangular to the third spatial direction, substantially rectangular Has footprint,
• Inserting at least two movable elements in the recess, so that the at least two movable elements in the recess in a first spatial direction, which are perpendicular to the longitudinal direction and parallel to the key broad side surfaces are arranged side by side, wherein the extension of the recess in the region of the first holding portion is less than a maximum Extension of the at least two movable elements in the second spatial direction, and
• Forming, in particular cold forming or cold massive forming, the recess, in particular at least one edge of the recess on a second key broadside side surface to form at least one second holding portion which extends into the recess, so that an extension of the recess in the second spatial direction in the region of the second Holding portion is smaller than the maximum extent of the at least two movable elements in the second spatial direction.

The recess and the at least one first holding section are provided in such a way that the movable elements to be inserted are secured in the recess towards the first broad-side broadside surface, in particular against falling out of the recess. Likewise, the recess is deformed by the cold forming so that, in particular by the at least one second holding portion, the movable elements to be used are secured in the recess towards the second key broadside side, in particular against falling out of the recess.

A rectangular shape of the base of the recess is particularly suitable for arranging therein symmetrically formed movable elements, such as discs, fitted.

The manufacturing method of the key according to the invention thus differs significantly from known production methods. In particular, the introduction of a shaft transverse to the longitudinal direction and parallel to the Schlüsselbreitseitenflächen is no longer necessary. In particular, the formation of the holes on the key narrow side surfaces for insertion of the shaft has required high precision. Furthermore, the shaft had to be passed through the movable elements formed as rings, which is a very expensive operation. Furthermore, the shaft must be fixed in the key shank. By avoiding these steps, working hours and costs can be saved.

The object initially posed is thus completely solved.

In one configuration of the key, provision can be made for the key to each have two holding sections on each of the key broadside side faces, wherein the two holding sections are arranged opposite one another on the recess in the second spatial direction.

The attachment of two holding portions on each key wide side surface increases the securing of the movable elements in the recess and causes a uniform distribution of forces on the holding portions when the movable elements are deflected in abutment against the holding portions.

In a further embodiment of the key can be provided that the key has on each of the key broadside faces exactly one holding portion which surrounds the recess.

In such a configuration, the securing of the at least two movable elements in the recess is also increased. Furthermore, such a holding portion could be produced simply by chiseling by means of a punch which covers the entire recess and the adjacent edge region of the key shaft.

In a further embodiment of the key can be provided that the second spatial direction corresponds to the longitudinal direction.

Since the movable elements are arranged perpendicular to the longitudinal direction, both movable elements are secured by the holding portion, which tapers the recess in the longitudinal direction. This prevents the movable elements from shifting in different directions in the first spatial direction with a minimum twist relative to the longitudinal axis and relative movement relative to one another, thereby becoming wedged. It is particularly possible that the key has only one holding section on only one longitudinal side of the recess, wherein the holding section tapers the recess in the longitudinal direction. In this case, the production cost would be minimized.

In a further embodiment of the key can be provided that the second spatial direction is transverse or perpendicular to the longitudinal direction. When the second spatial direction is transverse to the longitudinal direction, an angle between the longitudinal direction and the second spatial direction is in a range between 0 ° and 90 °.

If the recess is tapered transversely to the second spatial direction, it is possible for the movable elements to be held in the recess and to be movable differently far perpendicular to the key broadside side surfaces. This feature can be used to provide the additional security features in the lock cylinder that allow for the deflection of the movable elements.

If the recess is tapered in particular perpendicular to the longitudinal direction, the movable elements are secured on both transverse sides of the recess. For this purpose, the recess may have a plurality of holding sections on both transverse sides of the recess or a holding section which extends from one transverse side to the other transverse side or which completely surrounds the recess.

In a further embodiment of the key can be provided that the recess symmetrical to a perpendicular to the key broadside surfaces and is arranged parallel to a longitudinally extending median plane of the key shaft.

The key shank has the opposing key broadside faces and two key side faces also opposite each other connecting the key broadside faces. The key shank is substantially rectangular in cross-section. The two longer sides of the rectangle are the "key broadside faces". The two shorter sides are the "key narrow side surfaces". Consequently, the center plane runs exactly in the middle between the key narrow side surfaces and parallel to them. It follows that the median plane extends parallel to the longitudinal direction. The recess is arranged symmetrically to this center plane. This means that the recess has a cross section which is symmetrical to the median plane. It is therefore exactly one half of the recess on each side of the median plane. Such a configuration allows the arrangement of the at least two movable elements described below symmetrical to the median plane.

In a further embodiment of the key can be provided that the at least two movable elements are arranged symmetrically to a perpendicular to the key broad side surfaces and parallel to the longitudinal direction extending median plane of the key shaft.

With regard to the position of the median plane, the above applies. The movable elements are aligned in this case symmetrically to the center plane. If there are exactly two movable elements, one movable element is arranged on each side of the median plane. The same applies to another even number of movable elements, for example, two movable elements are arranged on each side of the median plane. With an odd number of movable elements, for example of three movable elements, the middle movable element is arranged such that it lies centrally on the median plane. The central movable element then has to be configured symmetrically with respect to the center plane in order to achieve a total symmetrical arrangement of the movable elements with respect to the median plane.

In a further embodiment of the key can be provided that the key has exactly two movable elements.

In this embodiment, two movable elements are thus provided, which are arranged adjacent to each other. Except for a common game, the movable elements are directly adjacent to each other. The movable elements can be moved translationally relative to each other and relative to the recess. The embodiment with two movable elements provides the advantage of the invention and also provides a simple structure, which simplifies a symmetrical arrangement and provision of the key as a reversible key due to the even number of movable elements.

In a further embodiment of the key can be provided that each one of the two movable elements is arranged on each side of a perpendicular to the Schlüsselbreitseitenflächen and parallel to the longitudinal direction extending median plane of the key shaft.

This designates the special case described above, that exactly two movable elements are provided. In each case one of the movable elements is then arranged on each side of the median plane. In this way, the key can be designed as a reversible key. Regardless of its orientation in the key channel each one of the movable elements is arranged on each side of the median plane and can actuate a corresponding locking fuse.

In a further embodiment of the key can be provided that a maximum extent of each movable element in a direction perpendicular to the key broadside faces is greater than a distance between the key broadside faces.

In this way, each movable element protrudes in each case from the cross-sectional profile of the key shaft. In this way, for example, it can be ensured that an outer cross-sectional contour of each movable element must be interrogated when inserted into a key channel.

In a further embodiment of the key can be provided that the at least two movable elements are movable relative to the key shaft in a third spatial direction which is perpendicular to the Schlüsselbreitseitenflächen, in particular wherein the at least two movable elements are movable relative to each other.

In particular, by the vertical movement of the movable elements with respect to the key broadside faces another security feature is provided, which can be queried in the lock cylinder. This increases the security of the key.

In a further embodiment of the key, provision may be made for the recess to guide the at least two movable elements in the third spatial direction.

This embodiment prevents the movable elements from being able to execute a movement parallel to the key broadside side surfaces. This avoids that the movable elements wedged or jammed each other.

In a further embodiment of the key, it can be provided that the at least two movable elements, each with an exposed contact surface in abutment, are arranged side by side and the contact surfaces extend perpendicular to the first spatial direction.

The contact surface thus extends perpendicular to the Schlüsselbreitseitenflächen and parallel to the longitudinal axis. Thus, the movable elements each other in a direction perpendicular to the key broadside surfaces. This avoids a relative offset of the two elements relative to each other in the first spatial direction.

In a further embodiment of the key can be provided that the surface of the movable elements is simply connected, in particular wherein the movable elements are solid. In particular, the movable elements are formed without an inner recess.

The term "simply connected" with respect to topological spaces, in particular surfaces, means that every closed path in the space, in particular the surface, can be contracted to one point, that is to say zero homotop. This means in particular that a simply connected surface has no gaps. For example, the surface of a ring is not simply contiguous, but the surface of a disk is already. The term "simply connected" is thus to be understood in its mathematical sense.

The advantage of a seamless surface is that the movable elements can not slip into a gap of an adjacent movable element in the relative movement to each other. Furthermore, such movable elements are easier to make than movable elements with holes, in particular rings, whereby manufacturing steps in the manufacture of the movable elements and costs can be saved.

In a further embodiment of the key, it can be provided that the at least two movable elements each have a shape which is selected from a group consisting of a disk, a pin, a hemisphere and a hemisphere with a flattened side surface.

These geometric shapes are particularly suitable as movable elements, since they can be arranged side by side so that a contact surface is formed, along which the movable elements are guided.

In a further embodiment of the key can be provided that the movable elements are symmetrically shaped.

The symmetrical shape of the movable elements offers the advantage that the movement of the elements is much easier to set or predict. As a result, the design effort of the key and the corresponding lock cylinder is reduced. If the movable elements are in particular rotationally symmetrical with respect to the first spatial direction, the elements can rotate about their central axis in this spatial direction without their relative arrangement in the recess changing. When inserting the key into an associated lock cylinder are the movable elements are then designed so that they can roll along a guide in the lock cylinder. Thus, in particular the resistance during insertion of the key is reduced in the corresponding lock cylinder.

In a further embodiment of the key can be provided that the movable elements are asymmetrically shaped.

An asymmetrical shape can serve as a further security feature and increases the security of the key.

In a further embodiment of the key can be provided that the at least two movable elements are identical. In particular, the movable elements can have an identical shape and dimensions.

In principle, it is possible that the movable elements are formed differently from each other. However, to simplify the manufacture of the individual elements of the key and to provide the key as a reversible key, it may be provided that the movable elements are identical. This does not necessarily mean that the movable elements are symmetrical in each case to a center plane of the respective movable element. As will be explained below, the cross-sections of the movable elements can also be designed asymmetrically to a center plane of the movable elements.

In a further embodiment of the key can be provided that the at least two movable elements are arranged in mirror image to each other. In particular, the movable elements can be arranged in mirror image to the median plane.

As described above, the movable members may each have an asymmetric cross section. However, if the movable elements are identical, they may nevertheless be arranged symmetrically with respect to the median plane. Their cross-sections are then arranged symmetrically or mirror-inverted with respect to the median plane. The two movable elements are then arranged "back to back", so to speak.

In a further embodiment of the key, provision may be made for the key shank to have at least one longitudinal groove extending parallel to the longitudinal direction in at least one of the key-width-side faces.

In principle, of course, at least one longitudinal groove can be provided in each of the broad side surfaces. In the case of a reversible key, for example, this must be provided. By means of the longitudinal grooves, the cross-sectional profile of the key bit can be adjusted and further queries are made possible, for example, by appropriate embodiments of a cross-sectional profile of a key channel in a cylinder core of the lock cylinder.

In a further embodiment of the key, provision can be made for the key shank to have at least one recess for interrogating at least one profiled pin in at least one of the key broadside faces.

In this way, a further security feature can be implemented in the key by means of the depression in order to further increase the security of the key.

In a further embodiment of the key can be provided that the recess is arranged in a key head facing away from the front third of the key shaft.

In this way, it is achieved that the movable elements must be inserted deep into the keyway to fully insert the key in a cylinder core of a lock cylinder. For this purpose, for example, the movability of the movable elements can be interrogated by the movable elements each have to pass through a labyrinth during insertion of the key into the lock cylinder. In this way, the safety of the locking device provided by the key can be further increased.

In a further embodiment of the key can be provided that the recess at the corners of the base area has extended corner areas, in particular semicircular corner areas.

However, the rectangular shape is difficult to manufacture, since the cutting tools used for production, in particular drills or milling machines, are round. Thus, the tapered corners of the rectangular shape can not be readily formed. For example, another special tool would have to be used. Alternatively, the corners of the base can also be rounded, whereby the base is only substantially rectangular.

Preferably, it may also be provided to expand the rounded corners of the base by means of the drill or milling machine used. This results in a rectangular base area and additional extended corner areas, which are arranged at the corners of the base. The sum of the base area and the corner areas gives the total cross-sectional area of the recess perpendicular to the third spatial direction.

In a further embodiment of the key can be provided that the key is designed as a reversible key.

The training as a reversible key is characterized in that the orientation in which the key is inserted into the key channel, does not matter. It can be provided, for example, by a symmetrical, in particular a point-symmetrical, embodiment of the safety-relevant features of the key shaft relative to a median plane of the key shaft. Of course, the key can also be designed as a non-reversible key.

In a further embodiment of the key, provision can be made for the key shank to have at least one tip recess in at least one of the key-width side faces, and for the at least one tip depression to adjoin the recess.

In this way, further safety-relevant features can be provided and, moreover, the deflection of the movable elements can be simplified by means of corresponding support pins, without these colliding with the key broadside side surface. Also, the apertures provided by the at least one tip recess serve the edges of the recess to facilitate, for example, a better sliding of provided in the key cylinder profile pins.

In a further embodiment of the closure device can be provided that the lock cylinder has at least a number of movable elements corresponding plurality of locking fuses, each movable element is associated with one of the locking fuses, and wherein the cylinder core for each movable element associated with the respective locking fuse support pin having.

Accordingly, each movable element associated with a locking device and a support pin. By means of the proposed locking device, it is possible, due to the plurality of locking fuses corresponding at least to the number of movable elements, each of the movable elements individually or the movable elements to query separately from each other. The plurality of locking fuses equal at least the number of movable elements. This means that each of the movable elements is assigned a blocking fuse. In this way, the maximum number of security features that are provided by the key by the movable elements can be queried by the lock cylinder.

In a further embodiment of the closing device can be provided that the key has exactly a first movable element and second movable element, wherein the lock cylinder at least one first locking element associated with the first locking element, in particular pin tumbler, and a second movable element associated with the second locking device, in particular pin tumbler, wherein the cylinder core has one of the first locking lock, in particular pin tumbler, associated first support pin and one of the second locking device, in particular Stiftzuhaltung, associated second support pin, wherein the first support pin in the release state, the first movable element against the first locking fuse, in particular pin tumbler, supported, and wherein the second support pin in the release state, the second movable element against the second locking device, in particular Stiftzuhaltung supported.

In this case, the embodiment with exactly two movable elements thus at least two locking devices are provided. The first locking fuse is assigned to the first movable element, the second locking fuse is assigned to the second movable element. The locking devices can each be a pin tumbler. Furthermore, one of the first locking fuse assigned first support pin is arranged on one of the first locking fuse opposite side of the key channel. Correspondingly, a second support pin is arranged on a side of the key channel opposite the second locking fuse. In the fully inserted position of the bowl in the keyway a respective support pin supports the corresponding movable element and deflects it in the direction of the opposite locking fuse. In this way, the locking fuse is moved and goes into the release state.

In particular, however, it may also be provided that the key has exactly one first movable element and second movable element, wherein the lock cylinder has exactly one locking safety device, in particular pin tumbler, and exactly one support pin associated with one of the movable elements. The support pin supports in the release state, the associated movable element against the locking device, in particular Stiftzuhaltung from.

In a further embodiment of the locking device can be provided that the first support pin and the second support pin are arranged on opposite sides of the keyway.

In this way, it follows that upon movement into the release state, the two movable elements are deflected in the opposite direction. This causes the relative mobility of the movable elements to each other and increases the security of the locking device.

In a further embodiment of the closure device can be provided that the first support pin and the second support pin are arranged on the same side of the keyway.

In this case, the first support pin and the second support pin in particular may protrude differently far into the keyway. In particular, the first support pin and the second support pin arranged on the same side of the key channel can be designed such that they effect a deflection of the first movable element, which is different from a deflection of the second movable element. In particular, the distances by which the first movable element and the second movable element are deflected can be of different lengths.

In a further embodiment of the closing device can be provided that the first support pin and the second support pin are arranged obliquely to the keyway. In particular, it may be provided that the first support pin and the second Support pin are each arranged at an angle of 45 ° relative to the keyway.

In this way, another security feature can be provided. In order to deflect a movable element accordingly, this has to have a peripheral surface that can not catch on a support pin or a profiled pin. For example, at an angle of the support pin of 45 ° to the keyway, a peripheral contour of also 45 ° or a semicircular peripheral contour may be provided on a respective movable member to be deflected along the corresponding support pin without jamming.

In a further embodiment of the closing device can be provided that the keyway has a number of longitudinal grooves corresponding at least to the number of movable elements, each movable element is associated with a longitudinal groove whose cross-sectional contour is complementary to a peripheral surface of the respective movable element.

In this way, the outer cross-sectional contour of the movable element can serve as a further security feature, which is queried by means of the key channel. The respective movable element then rolls during the insertion of the key in the respective complementary cross-sectional contour of the keyway and is deflected or deflected at the end by the respective support pin. In this way, a labyrinth can be formed, which serves as another security feature. Preferably, in this case, the movable element is rotationally symmetrical, in particular as a ring, disc or hemisphere.

In a further embodiment of the closing device can be provided that the first movable member is associated with a first longitudinal groove and the second movable member is associated with a second longitudinal groove, and wherein the first longitudinal groove and the second longitudinal groove are formed in opposite surfaces of the keyway.

In this way, oppositely extending labyrinths for the first movable element and the second movable element are formed. Upon insertion of the key into the closing channel, the movable elements are deflected in different directions in order to release the advance of the key into the key channel. At the end they are then deflected by the opposing support pins in the opposite direction. In this way, the mobility of the two movable elements opposite to each other and queried in both directions with respect to an undeflected position, which further increases security. It can also be provided that the first movable element is associated with a first longitudinal groove and the second movable element is associated with a second longitudinal groove, and wherein the first longitudinal groove and the second longitudinal groove are formed in the same surface of the keyway. This embodiment can be provided in particular if both support pins are arranged on the same side of the key channel.

• Herstellen des Schlüsselrohlings durch Gießen

In a further embodiment of the method, it can be provided that the step of providing further comprises:

• Making the key blank by casting

Casting the key blank is a simple method of production. For example, the key blank can also be formed from a piece of metal by machining with a suitable tool.

It can preferably be provided that the casting mold of the key blank is designed so that the key blank after casting has the recess and / or the holding portion. Furthermore, it can be provided that the cast key blank is poured without the recess and the holding section and these are added in further processing steps with a suitable tool, for example by drilling and / or milling.

• Ausbilden der Aussparung in dem Schlüsselschaft durch spanabhebende Bearbeitung, insbesondere Bohren und/oder Fräsen.

In a further embodiment of the method, it can be provided that the step of providing further comprises:

• Forming the recess in the key shank by machining, in particular drilling and / or milling.

This makes it possible to form the recess very precisely and with reproducible accuracy.

• Umformen, insbesondere Kaltumformen oder Kaltmassivumformen, der Aussparung, insbesondere mindestens einer Kante der Aussparung, auf der ersten Schlüsselbreitseitenfläche, um den mindestens einen ersten Halteabschnitt auszubilden, der sich in die Aussparung erstreckt, so dass eine Erstreckung der Aussparung in die zweite Raumrichtung in einem Bereich des mindestens einen ersten Halteabschnitts kleiner ist als die maximale Gesamterstreckung der mindestens zwei bewegbaren Elemente in die zweite Raumrichtung.

In a further embodiment of the method, it can be provided that the step of providing further comprises:

• Forming, in particular cold forming or cold massive forming, the recess, in particular at least one edge of the recess, on the first key broadside side surface to form the at least one first holding portion which extends into the recess, so that an extension of the recess in the second spatial direction in one area of the at least one first holding section is smaller than the maximum total extension of the at least two movable elements in the second spatial direction.

The recess is thereby deformed so that, in particular by the at least one first holding section, the movable elements to be inserted are secured in the recess towards the first key-wide side surface, in particular against falling out of the recess.

In a further embodiment of the method can be provided that the formation of the at least one first holding portion is carried out by applying force, in particular by chiselling, for example by means of a punch or other tool designed for this purpose.

Preferably, the force is to be attached so that it acts perpendicular to the first key broadside side surface. Preferably, this will be the material of the key shaft deformed at the edge of the recess so that the first holding portion is formed. This means, in particular, that material of the key shaft is displaced toward the recess at the edge of the recess, with the opening of the recess in the first key broadside side surface being reduced or tapering in a spatial direction.

• Ausbilden der Aussparung und des mindestens einen ersten Halteabschnitts in dem Schlüsselschaft durch spanabhebende Bearbeitung, insbesondere Bohren und/oder Fräsen, so dass eine Erstreckung der Aussparung in die zweite Raumrichtung im Bereich des mindestens einen ersten Halteabschnitts kleiner ist als die maximale Gesamterstreckung der mindestens zwei bewegbaren Elemente in die zweite Raumrichtung.

In a further embodiment of the method, it can be provided that the step of providing further comprises:

• Forming the recess and the at least one first holding portion in the key shank by machining, in particular drilling and / or milling, so that an extension of the recess in the second spatial direction in the region of the at least one first holding portion is smaller than the maximum total extension of the at least two movable Elements in the second spatial direction.

The recess and the at least one first holding portion are formed so that, in particular by the at least one first holding portion, the movable elements to be used in the recess to the first key broadside side, in particular against falling out of the recess, are secured.

In a further embodiment of the method, it can be provided that the corners of the recess are widened such that the recess has widened corner regions, in particular semicircular corner regions, at the corners of the base surface.

However, the rectangular shape is difficult to manufacture because the machining methods used, especially drilling or milling, use tools that are round. This can be the tapered Corners of rectangular shape not readily forming. For example, another special tool would have to be used. Alternatively, the corners of the base can also be rounded, whereby the base is only substantially rectangular.

Preferably, it may also be provided to expand the rounded corners of the base by means of drilling or milling. This gives a rectangular base and additional extended corner areas, which are arranged at the corners of the base. The sum of the base area and the area of the extended corner areas gives the total cross-sectional area of the recess perpendicular to the third spatial direction.

In a further embodiment of the method can be provided that the formation of the at least one second holding portion is carried out by applying force, in particular by chiselling, for example by means of a punch or other tool designed for this purpose.

Preferably, the force is to be attached so that it acts perpendicular to the second key broadside side surface. Preferably, the material of the key shaft is thereby deformed at the edge of the recess in such a way that the second holding section is formed. This means, in particular, that material of the key shaft is displaced toward the recess at the edge of the recess, with the opening of the recess in the second key broadside side surface being reduced or tapering in a spatial direction.

It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination indicated, but also in other combinations or in isolation, without departing from the scope of the present invention.

Fig. 1A

eine isometrische Ansicht auf eine erste Ausführungsform eines Schlüssels,

Fig. 1B

eine isometrische Ansicht auf eine zweite Ausführungsform eines Schlüssels,

Fig. 2A

eine entgegengesetzt isometrische Ansicht des Schlüssels in Fig. 1A,

Fig. 2B

eine entgegengesetzt isometrische Ansicht des Schlüssels in Fig. 1B,

Fig. 3

eine Draufsicht auf den Schlüssel in der Fig. 2A,

Fig. 4

eine Querschnittansicht entlang einer Linie IV-IV in Fig. 3,

Fig. 5

eine Querschnittansicht entlang einer Linie V-V in Fig. 3,

Fig. 6

eine Seitenansicht eines einzelnen bewegbaren Elements,

Fig. 7

eine Querschnittsansicht, in der das bewegbare Element in einer Mittelebene des bewegbaren Elements geschnitten ist,

Fig. 8

eine isometrische Ansicht eines bewegbaren Elements,

Fig. 9

eine geschnittene isometrische Ansicht eines bewegbaren Elements,

Figuren 10A-10C

eine Baugruppendarstellung zweier bewegbaren Elemente, wobei in gestrichelten Linien eine Aussparung in der Draufsicht dargestellt ist,

Fig. 10D

eine Vergrößerung des durch XD gekennzeichneten Bereichs der Querschnittansicht aus Fig. 4,

Fig. 10E

eine vergrößerte Draufsicht auf eine erste Ausführungsform der Aussparung des Schlüssels aus derselben Blickrichtung wie Fig. 3,

Fig. 10F

eine vergrößerte Draufsicht auf eine zweite Ausführungsform der Aussparung des Schlüssels aus derselben Blickrichtung wie Fig. 3,

Fig. 10G

die Draufsicht aus Fig. 10F mit zwei in der Aussparung angeordneten bewegbaren Elementen,

Fig. 11

eine isometrische Ansicht der entgegengesetzt zueinander ausgelenkten bewegbaren Elemente, wenn sie senkrecht zu der in Fig. 10A-C dargestellten Zeichnungsebene ausgelenkt sind,

Fig. 12A

eine Explosionsdarstellung zur Erläuterung einzelner Elemente des Schlüssels und der Schließvorrichtung bezüglich einer ersten Ausführungsform,

Fig. 12B

eine Explosionsdarstellung zur Erläuterung einzelner Elemente des Schlüssels und der Schließvorrichtung bezüglich einer zweiten Ausführungsform,

Fig. 13

eine isometrische Darstellung einer zusammengebauten Schließvorrichtung,

Fig. 14

eine Seitenansicht der Schließvorrichtung in Fig. 13,

Fig. 15

eine Querschnittsansicht der Schließvorrichtung entlang einer Linie XV-XV in Fig. 14,

Fig. 16A

eine Draufsicht in Richtung des Pfeils XVI in Fig. 13, wobei kein Schlüssel im Schlüsselkanal angeordnet ist, um dessen Profilquerschnitt zu verdeutlichen, die beweglichen Elemente befinden sich in einem in den Schlüsselkanal eingeführten Zustand am Beginn des Schlüsselkanals,

Fig. 16B

eine Draufsicht in Richtung des Pfeils XVII in Fig. 13, wobei kein Schlüssel im Schlüsselkanal angeordnet ist, um dessen Profilquerschnitt zu verdeutlichen, die bewegbaren Elemente befinden sich hier in einem aus- bzw. umgelenkten Zustand,

Fig. 17

frei geschnittene Elemente der Schließvorrichtung, um eine Auslenkung der bewegbaren Elemente zur Bereitstellung des Freigabezustands zu verdeutlichen,

Fig. 18

eine isometrische Darstellung der Anordnung in Fig. 17,

Fig. 19

eine schematische Darstellung eines Herstellungsverfahrens eines Schlüssels für eine Schließvorrichtung,

Fig. 20A

eine schematische Darstellung des ersten Verfahrensschritts aus Fig. 19 bezüglich einer ersten Ausführungsform,

Fig. 20B

eine schematische Darstellung des ersten Verfahrensschritts in Fig. 19 bezüglich einer zweiten Ausführungsform, und

Fig. 21

eine illustrierte Darstellung des Erweiterns der Ecken der Aussparung des Schlüssels.

Embodiments of the invention are illustrated in the drawings and will be explained in more detail in the following description. Show it:

Fig. 1A

an isometric view of a first embodiment of a key,

Fig. 1B

an isometric view of a second embodiment of a key,

Fig. 2A

an opposite isometric view of the key in Fig. 1A .

Fig. 2B

an opposite isometric view of the key in Fig. 1B .

Fig. 3

a top view of the key in the Fig. 2A .

Fig. 4

a cross-sectional view taken along a line IV-IV in Fig. 3 .

Fig. 5

a cross-sectional view along a line VV in Fig. 3 .

Fig. 6

a side view of a single movable element,

Fig. 7

a cross-sectional view in which the movable member is cut in a median plane of the movable member,

Fig. 8

an isometric view of a movable element,

Fig. 9

a sectioned isometric view of a movable element,

Figures 10A-10C

an assembly representation of two movable elements, wherein in dashed lines a recess in the plan view is shown,

Fig. 10D

an enlargement of the XD marked area of the cross-sectional view Fig. 4 .

Fig. 10E

an enlarged plan view of a first embodiment of the recess of the key from the same direction as Fig. 3 .

Fig. 10F

an enlarged plan view of a second embodiment of the recess of the key from the same direction as Fig. 3 .

Fig. 10G

the top view Fig. 10F with two movable elements arranged in the recess,

Fig. 11

an isometric view of the oppositely deflected movable elements, when perpendicular to the in Fig. 10A-C are deflected illustrated drawing plane,

Fig. 12A

an exploded view for explaining individual elements of the key and the locking device with respect to a first embodiment,

Fig. 12B

an exploded view for explaining individual elements of the key and the closing device with respect to a second embodiment,

Fig. 13

an isometric view of an assembled closure device,

Fig. 14

a side view of the locking device in Fig. 13 .

Fig. 15

a cross-sectional view of the closure device along a line XV-XV in Fig. 14 .

Fig. 16A

a plan view in the direction of arrow XVI in Fig. 13 with no key arranged in the keyway to illustrate its profile cross-section, the movable elements are in a state introduced into the key channel at the beginning of the key channel,

Fig. 16B

a plan view in the direction of arrow XVII in Fig. 13 , where no key is arranged in the keyway to illustrate its profile cross-section, the movable elements are here in a discharged or deflected state,

Fig. 17

free cut elements of the closure device to illustrate a deflection of the movable elements to provide the release state,

Fig. 18

an isometric view of the arrangement in Fig. 17 .

Fig. 19

a schematic representation of a manufacturing method of a key for a closing device,

Fig. 20A

a schematic representation of the first method step Fig. 19 with respect to a first embodiment,

Fig. 20B

a schematic representation of the first method step in Fig. 19 with respect to a second embodiment, and

Fig. 21

an illustrated illustration of the expansion of the corners of the recess of the key.

The Figs. 1A and 2A show isometric views of a first embodiment of a key 10. The Fig. 2A shows the key 10 in the Fig. 1A in an isometric view from the opposite perspective. The key 10 has a key head 12, which is also called key crayon. The key head 12 is used for manual gripping of the key 10. Starting from the key head 12, a key shank 14 extends to the key shaft 14 are various security features arranged, which are queried upon insertion of the key 10 in a corresponding locking device. If the query is positive, it is possible to move the locking device from a blocking state into a release state.

The key shank 14 extends along a longitudinal direction 16. The key shank 14 has a rectangular or substantially rectangular cross-sectional profile. The two longer sides of this rectangle are called key broadside faces 18, 18 '. The two shorter sides of the rectangle in cross section are referred to below as key narrow side surfaces 20, 20 '. The key wide side surfaces 18, 18 'and the key narrow side surfaces 20, 20' are thus arranged opposite to each other. Each of the key broadside surfaces 18, 18 'may have at least one elevation 22, furthermore, at least one longitudinal groove 24 may be provided. Both the at least one elevation 22 and the at least one longitudinal groove 24 serve as further security features of the key shank 14, which cooperates with a corresponding complementary configuration of a cross-sectional profile of a key channel of the closure device, to allow insertion of the key 10 only with suitable cross-sectional profiles.

In the key shank 14, a recess 32 is provided, which extends through the entire key shank 14 and the key broadside surfaces 18, 18 '. The recess 32 is preferably arranged in a front third 26 of the key shaft 14. As the front third 26 hereby a remote from the key head 12 third 26 is understood from the key head 12 overarching key shank 14.

In the recess 32, two movable elements 28, 30 and a first movable member 28 and a second movable member 30 are arranged. The dimensioning of the movable elements 28, 30 will be explained in more detail below. The movable elements 28, 30 are arranged side by side along a first spatial direction 38, which is perpendicular to the longitudinal direction 16 and parallel to the key broadside surfaces 18, 18 '. The movable elements 28, 30 are in the in Figs. 1A and 2A illustrated first embodiment disc-shaped. It is conceivable, however Any other possible form of training, for example, annular, hemispherical or pin-shaped.

In the illustrated first embodiment, the recess 32 has an elongate shape, which in particular may be rectangular, and extends parallel to the longitudinal direction 16. Regarding the dimensioning of the recess 32 relative to the movable elements 28, 30 will also be explained in more detail below , The recess 32 is made slightly larger than a combined width of the two movable elements 28, 30 and has a longitudinal extent parallel to the longitudinal direction 16, which is slightly larger than the longitudinal extent of a single movable element 28 or 30 parallel to the longitudinal direction 16. In this way, the movable elements 28, 30 are guided with a small clearance through the recess 32. The movable elements 28, 30 can not move in the longitudinal direction 16 apart from the game and also do not move transversely to the longitudinal direction 16, except for a game provided. In particular, the play makes it possible to rotate the movable elements 28, 30 if the movable elements are rotationally symmetrical, for example designed as discs or rings. As a result, in particular, a frictional resistance is reduced by the movable elements 28, 30 during insertion of the key 10 into a lock cylinder. Furthermore, however, a movement perpendicular to the key broadside faces 18, 18 'or perpendicular to the longitudinal direction 16 and parallel to the key narrow side faces 20 is made possible. The movable elements 28, 30 can thus be guided separately from each other guided by the recess 32 relative to the key shaft 14. The game facilitates the movement perpendicular to the Schlüsselbreitseitenflächen 18, 18 ', as occurring during this movement friction effects can be at least partially avoided.

In the illustrated first embodiment exactly two movable elements 28, 30, in particular two discs, are provided. In principle, however, more than two movable elements 28, 30 may be provided. For example, an even number of movable elements, for example four or six movable elements, may be arranged in the recess 32. But it can also be an odd number, for example, three rings arranged in the recess 32. The movable elements 28, 30 are arranged side by side. That is, they have no relation between themselves Spacers, sleeve members or the like to their spacing. The movable elements 28, 30 are thus directly next to each other. In the illustrated first embodiment, the first movable member 28 and the second movable member 30 are disposed adjacent to each other.

The key 10 further has at each of the key broadside faces 18, 18 'at least one holding section 33, 34 or at least one first holding section 33 on the first key broadside side surface 18 and at least one second holding section 34 on the second key broadside side surface 18'. The holding portions 33, 34 are arranged on the edge of the recess 32 and extend into the recess 32. An extension of the recess 32 in a second spatial direction 40 which is parallel to the key broadside surfaces 18, 18 ', is in the region of the holding portions 33, 34th smaller than a maximum extent of the at least two movable elements 28, 30 in the second spatial direction 40, in particular so that each of the at least two movable elements 28, 30 is secured in the recess 32. This means that is limited in their movement perpendicular to the Schlüsselbreitseitenflächen 18, 18 'and movable elements 28, 30 are secured in particular against falling out.

In the illustrated first embodiment, the key 10 has on the first key wide side surface 18, two holding portions 33, 33 ', as in Fig. 1A is shown. On the second key broadside side surfaces 18 ', the key 10 also has two holding sections 34, 34', as in FIG Fig. 2A is shown. In this case, the two first holding sections 33, 33 'and the two second holding sections 34, 34' are arranged on the recess 32 in the second spatial direction 40 opposite one another. The second spatial direction 40 in the illustrated embodiment corresponds to the longitudinal direction 16. This means that the two holding portions are each arranged in the longitudinal direction 16 opposite one another. The holding portions 33, 33 ', 34, 34' are each arranged on edges of the recess 32, wherein the edges are arranged in the longitudinal direction 16 opposite one another. By the holding portions 33, 33 ', 34, 34', the recess in the region of the holding portions 33, 34 is tapered. In the illustrated first embodiment, the distance between the two first holding portions 33, 33 'and the two second holding portions 34, 34' corresponds to the extent of the recess 32 in the longitudinal direction 16 in the region of the holding portions 33, 33 ', 34, 34'. The distance of the holding portions 33, 33 ', 34, 34' is chosen so that it is smaller than a maximum extent of the movable elements 28, 30 in the longitudinal direction 16.

The Figs. 1B and 2B show isometric views of a second embodiment of a key 10. The Fig. 2B shows the key 10 in the Fig. 1B in an isometric view from the opposite perspective. The second embodiment in Fig. 1B corresponds substantially to the first embodiment, which in Fig. 1A is described. Like elements are identified by like reference numerals and will not be explained again. The second embodiment additionally includes at least one tip recess 37 on each key broadside surface 18, 18 'located in the front third 26 of the key shaft. In the illustrated second embodiment, the key has exactly two tip recesses 37 on each key broadside face 18, 18 '. The two tip recesses 37 are arranged in the longitudinal direction at the two ends of the recess 32. They are thus arranged directly adjacent to the two first holding sections, 33, 33 '. The tip recess, for example, makes it possible to facilitate sliding of a profiled pin on an edge of the recess 32 during the insertion of the key 10. Furthermore, the key broad side surface 18 'on a plurality of recesses 35 which can be queried by profile pins of a lock cylinder and serve as further security features.

The Fig. 3 shows a plan view of the in the Fig. 2A The same elements are again identified by the same reference numerals and will not be explained again. In this plan view, the geometry of the recess 32 and the position of the movable elements 28, 30 are shown. The key 10 or the key shank 14 has a median plane 36. The center plane 36 is halfway between the key narrow side surfaces 20, 20 '. The recess 32 is arranged symmetrically to the median plane 36. In each case one of the movable elements 28, 30 is arranged on each side of the median plane 36. In this way, by the symmetrical arrangement of the movable elements 28, 30 in particular a function of the key 10 as a reversible key possible. Such a reversible key, regardless of its orientation in the key channel of a closing device, cause a movement into the release state. This is provided by the corresponding configuration of the features, in particular the key broadside surfaces 18, 18 '.

The Fig. 4 shows a cross-sectional view taken along a line IV-IV in the Fig. 3 , Shown is thus a cross section along the longitudinal axis 16 in the median plane 36 through the key 10. Shown in cross section is the recess 32 and the recess 32 disposed in the first movable element 28. A distance between the key broadside faces 18 'and 18 is denoted by the reference numeral 39 denotes. As can be seen, the first movable element 28, and likewise the second movable element 30 identically formed in the illustrated embodiment, has a vertical extension 43 in a third spatial direction 42, the third spatial direction 42 being perpendicular to the key broadside surfaces 18, 18 ' , The vertical extent 43 of the first movable element 28 and the second movable element 30 is greater than the distance 39 of the key broadside surfaces 18, 18 '. Consequently, the first movable member 28 protrudes beyond the key broad side surface 18 in the one shown in FIG Fig. 4 shown deflected position. The first movable element 28 is deflected in the illustrated position in the third spatial direction 42. This movement is guided by the recess 32, which is only slightly larger, for example 0.05 mm, 0.1 mm, 0.015 mm, 0.2 mm, 0.25 mm, 0.3 mm, larger in their extent parallel to the Longitudinal direction 16 as an extension of the first movable member 28 in the longitudinal direction 16 is. In this way, a deflection of the movable element 28 parallel to the direction 42 becomes possible. The same applies to the second movable element 30. The two movable elements 28, 30 can be deflected independently of each other. By the two first holding portions 33, 33 'and the two second holding portions 34, 34', the recess 32 is tapered towards the two key broad side surfaces 18, 18 'such that a longitudinal extent of the recess in the longitudinal direction 16 in the region of the holding portions 33, 34 is smaller than the extent of the movable members 28, 30 in the longitudinal direction. As a result, the movable elements 28, 30 are secured in the recess 32. In other words, this restricts the movement of the movable elements 28, 30 in the third spatial direction 42.

The Fig. 5 shows a cross section along a line VV in the Fig. 3 , It can be seen that the movable elements 28, 30 are arranged next to one another in the recess 32 in the first spatial direction 38. The remaining elements are identified by the same reference numerals and will not be explained again. Shown is the deflection of the movable elements 28, 30 in opposite directions in the third spatial direction 42nd The first movable element 28 thus protrudes beyond the key broadside surface 18. The second movable element 30 protrudes beyond the key broadside surface 18 '. Thus, not only a rectified movement of the rings 28, 30 is possible, but movement in opposite directions. This further increases the security of a locking device that can be provided by means of the key 10.

In the FIGS. 6 to 9 a single movable element 28 is shown. The Fig. 6 shows a side view of the movable element 28. The Fig. 7 shows a cross-sectional view of the movable element 28. The Fig. 8 shows an isometric view of the movable member 28 of Fig. 6 , The Fig. 9 shows an isometric view of a free cut surface of the movable member 28th

The movable element 28 has an outer diameter 46 and a further diameter 48. The movable element 28 is rotationally symmetrical about a rotational symmetry axis 50. At an outer periphery, the movable member 28 has an outer circumferential surface 56. A width of the movable member 28 in the Fig. 7 is designated by the reference numeral 60. On the half width of the movable element 28 is the so-called disc center plane 52. The movable element 28 is formed asymmetrically with respect to the disc center plane 52. In particular, the outer peripheral surface 56 of the movable member 28 is formed asymmetrically. The outer peripheral surface 56 has a concave portion 58. Such a concave portion 58 may, for example, be provided to allow the advance of the ring in the keyway by means of the clearance provided by it. Due to the smaller cross-sectional area of the movable element 28 provided by the concave portion 58, collisions can be avoided or more space can be provided for other security features of a closing device. The movable member 28 further includes a side surface 54 and an abutment surface 44 spaced apart in a direction parallel to the rotational symmetry axis. The diameter 48 corresponds to the diameter of the contact surface 44. The outer diameter 46 corresponds to the diameter of the side surface 54th

The Fig. 10A shows two identically formed movable elements 28 and 30 according to a first embodiment. It is a plan view and the direction of this Top view corresponds to that of Fig. 3 , The two movable elements 28 and 30 are mirror images of each other and arranged side by side in the first spatial direction 38. The contact surface 44 of the two movable elements 28 and 30 are arranged adjacent to each other. It may also preferably be provided that a minimal clearance prevails between the two contact surfaces 44, whereby a movement of the movable elements 28, 30 relative to one another is simplified. If the movable elements are arranged in such a way that the contact surfaces 44 are in direct contact with one another, frictional forces which make the movement more difficult arise as a result of relative movement.

A length of the recess 32 parallel to the longitudinal direction 16 is tapered by the holding portions 33, 33 '. The extension in the longitudinal direction 16 between the holding sections 33, 33 'is referred to as the smallest longitudinal extension 68. The movable elements 28, 30 also have an extension in the longitudinal direction 16, which is referred to as the longitudinal extent 64. The longitudinal extent 64 of the movable elements 28,30 is greater than the smallest longitudinal extent 68 of the recess 32. A width of the recess 32 in the spatial direction 38 is referred to as the transverse extent 66 and the smallest transverse extent 66. The sum of the widths of the movable elements in the first spatial direction 38 is referred to as the transverse extent 62 of the movable elements 28, 30. The transverse extent 62 of the movable elements 28, 30 is minimally less than or equal to the transverse extent 66 of the recess 32. In this case, "minimally smaller" means that there is some play between the movable elements 28, 30 and the longitudinal sides of the recess. The term "smaller" in the case does not mean that there is a larger gap between the longitudinal sides of the recess 32 and the movable elements. The movable elements 28, 30 are arranged symmetrically with respect to the center plane 36. As already described, the movable elements 28, 30 are in particular identically designed and arranged in mirror image to one another. Thus, a situation results quasi "back to back". That is, the concave portions 58 of the two movable members 28, 30 face each other. In this way, despite the asymmetrical design of each of the movable elements 28, 30 with respect to its central plane 52 of the disk results in an overall symmetrical arrangement with respect to the median plane 36.

Fig. 10B shows a plan view of the recess 32 and the movable elements 28, 30 according to the first embodiment Fig. 10A. Fig. 10B is essentially identical to Fig. 10A , Like elements are identified by like reference numerals and will not be explained again. In addition, the greatest longitudinal extension 69 is minimally greater than or equal to the longitudinal extent 64 of both movable elements 28, 30. The term "minimally larger" in this case means that between the transverse sides of the recess 32 in the recess 32, a clearance between the longitudinally spaced transverse sides and the movable elements 28, 30 may be present. Under larger is not to be understood that between the transverse sides and the movable elements 28, 30 gape a larger gap.

Fig. 10C shows a plan view of the recess 32 and the movable elements 28, 30, according to a second embodiment. Fig. 10C is essentially identical to the Figures 10A and 10B , Like elements are identified by like reference numerals and will not be explained again. A first essential difference is that the two movable elements 28, 30 are arranged mirrored to each other, that is, that the two movable elements are arranged with the two outer surfaces 54 in abutment against each other. The contact surfaces 44 are located on the side facing away from the respective other movable element. Another, essential difference of Fig. 10C to the Figures 10A and 10B is that the holding portions 33, 33 'are not arranged at the transverse sides of the recess 32, that is spaced apart in the longitudinal direction 16, but at the longitudinal sides of the recess, that are perpendicular to the longitudinal direction 16 spaced from each other. As a result of this arrangement, a movable element 28 or 30 is secured in the recess by the respective holding section 33 or 33 'associated with a respective movable element 28 or 30. The recess 32 has a smallest transverse extent 66 in the first spatial direction 38, which is smaller than the transverse extent 32 of the movable elements 28, 30.

Fig. 10D shows an enlargement of the area indicated by XD of the cross-sectional view Fig. 4 , In this area, the recess 32 and the second movable member 30 are arranged. Identical elements are given the same reference numerals and will not be explained again. The recess 32 is tapered towards the key broad side surfaces 18 and 18 'through the holding sections 33, 33', 34, 34 '. It is, as already in Figs. 10A and 10B described, the longitudinal extent 64 of the second movable member 30 is greater than the smallest longitudinal extent 68 of the recess in the region of the first holding portions 33, 33 'and the second holding portions 34, 34' on the key broadside surfaces 18, 18 '. The second movable element 30 is thereby limited in its movement in the third spatial direction 42. This means in particular that the second movable element 30 is at least partially held in the recess 32. Figure 10D shows the second movable member 30 in its maximum deflection against the third spatial direction 42 in abutment against the first holding portions 33, 33 '. The second movable element 30 is also deflectable in the third spatial direction 42, wherein the second movable element 30 at a maximum deflection in the third spatial direction 42 in abutment with the second holding portions 34, 34 'is. In a deflection in one of the two directions, along or against the third spatial direction 42, the second movable element 30 is partially disposed outside of the recess 32. For the not shown first movable element 28, which is identical to the second movable element 30 and is also arranged in the longitudinal direction 16 in the recess 32, the same statements that have been made to the second movable element 30 apply.

Fig. 10E shows an enlarged plan view of a first embodiment of the recess 32 of the key 10 from the same direction as Fig. 3 , In this case, a cross section of the recess 32 is shown perpendicular to the third spatial direction 42. The cross-sectional area of the recess 32 is substantially rectangular, with the corners of the cross-sectional area being rounded. The recess has two holding sections 33, 33 'on the two transverse sides.

Fig. 10F shows an enlarged plan view of a second embodiment of the recess 32 of the key 10 from the same direction as Fig. 3 , In this case, a cross section of the recess 32 is shown perpendicular to the third spatial direction 42. The cross-sectional area of the recess 32 has a substantially rectangular base. The recess 32 has on the longitudinal sides extended corner regions 73, which are arranged at the four corners of the base. The cross-sectional area settles the rectangular base and the four corner surfaces together. The base area extends between the two transverse sides of the recess 32. The corner surfaces are arranged in the region of the extended corner regions 73. The recess has two holding sections 33, 33 'on the two transverse sides.

Fig. 10G shows the top view Fig. 10F with two arranged in the recess 32 movable elements 28, 30. The movable elements 28, 30 are arranged in the rectangular base of the recess 32. The movable elements are symmetrical and arranged as in Figs. 10A and 10B already described. The extension of the movable elements 28, 30 in the longitudinal direction and the transverse direction corresponds substantially, except for a required clearance, the shape of the base. The movable elements 28, 30 are thus guided in the longitudinal direction 16 and in the transverse direction, which corresponds to the first spatial direction 38. In the third spatial direction 42, the movable elements are movably arranged and limited in their movement by the holding portions 33, 33 'and the opposite holding portions 34, 34', not shown.

The Fig. 11 again shows an isometric view of the representation of Figs. 10A and 10B with respect to the first embodiment. From the into the Figures 10A and 10B shown "neutral position" in which the movable elements 28, 30 are not deflected, shows the Fig. 11 a deflected state in which the second movable element 30 is deflected in a first deflection direction and the first movable element 28 is deflected in the opposite second deflection direction 72. As will be explained below, this deflection state is particularly relevant to safety for a locking device in order to bring it into the release state.

Fig. 12A shows an exploded view of a first embodiment of a locking device 74. The locking device 74 has the key 10, as described above in connection with the Figures 1A . 2A to 11 has been described. The same elements are therefore identified by the same reference numerals and will not be explained again. In addition, the closing device 74 has a lock cylinder 76. In the illustrated first embodiment, the lock cylinder 76 is a Profile cylinder. However, it may also be another form, for example a round cylinder or oval cylinder.

The lock cylinder 76 has a housing 78 and a cylinder core 80. The cylinder core 80 is mounted in the housing 78 by means of a locking ring 82. The housing 78 is otherwise provided, for example, with a mounting hole 84 or threaded hole in order to screw the lock cylinder 76 in a door can. Furthermore, the housing 78 and also the cylinder core 80 may have a multiplicity of bores, in each of which locking devices, in particular pin tumblers, are guided in order to interrogate various security features of a key 10. Shown and explained below are only the locking devices in connection with the movable elements 28 and 30, in particular pin tumblers, which cooperate with the movable elements 28, 30.

The cylinder core 80 has a keyway 86. The key 10 is inserted into this key channel 86. After the key 10 has been fully inserted and all the security features of the key 10 have been polled positively, all the locking fuses are moved to a position that permits rotation of the cylinder core relative to the housing 78. This is the release state. If the key 10 is not fully inserted or fully withdrawn from the keyway 86, it will not be possible to rotate the cylinder core 80 relative to the housing 78. This is called a lock state.

With the movable elements 28, 30 cooperate a first support pin 90 and a second support pin 92. The support pins 90, 92 are pressed into the cylinder core 80. They are not movable. The support pins 90, 92 direct a respective movable element 28, 30 in the in the Fig. 11 indicated position and support this against a respective locking fuse or Stiftzuhaltung 104, 106 from. A first locking device or pin tumbler is designated by reference numeral 104. This cooperates with the first support pin 90. The first locking device is indicated schematically and usually has a first core pin 94. A housing pin 96 is supported by a spring element 100 or a support spring against a support member 102. In the locked state prevents the housing pin 96 from protruding into the cylinder core 80 a rotation of the cylinder core 80. In the release state, a contact surface between the first core pin 94 and the housing pin 96 is arranged such that the housing pin 96 does not protrude into the cylinder core 80, wherein the first core pin 94 does not protrude into the housing 78. In this way, the rotation of the cylinder core 80 with respect to the housing 78 is made possible. In addition, only schematically indicated is the second locking device or pin tumbler 106 on the basis of a second core pin 98. The remaining elements of this locking device are not shown for reasons of clarity. The second locking device 106 cooperates with the second support pin 94.

The Fig. 12B is essentially identical to the Fig. 12A , The same elements are therefore identified by the same reference numerals and will not be explained again. The key is in particular as a key 10 according to the embodiment in the Figs. 1B and 2B educated. The key 10 therefore has the plurality of recesses 35. In the lock cylinder 76, as already described above, a plurality of profile pins 88 are provided which can serve to interrogate recesses 35 in the key shank 14. However, these are not important in terms of the functionality of the movable elements 28, 30.

The Fig. 13 shows an isometric assembled view of the locking device 74. The key 10 is completely inserted into the cylinder core 80. The cylinder core 80 is mounted in the housing mouth by means of the locking ring 82.

The Fig. 14 shows a corresponding side view of the assembly view of Fig. 13 , The same elements are identified by the same reference numerals.

The Fig. 15 shows a cross-sectional view taken along a line XV-XV of Fig. 14 , Same elements as in the exploded view of Fig. 12 are marked with the same reference numerals and will not be explained again. In the illustrated view, the locking device 74 is in a release state. The key 10 is fully inserted in the keyway 86. In this position, the first support pin 90 deflects the second movable member 30 and thereby moves the first core pin 94. This in turn moves the housing pin 96 against the force of the spring 100, which on the Supporting element 102 is supported. As can be seen, therefore, a contact surface between the first core pin 94 and the housing pin 96 directly on a peripheral surface of the cylinder core 80 so that it can be rotated in the housing 78. A corresponding deflection results from a deflection of the movable element 28 on the second support pin 92, so that the second core pin 98 is deflected. As already stated, the other side of the locking device or pin tumbler 106 is merely indicated schematically. Each of the support pins 90 and 92 is arranged at an angle of approximately 45 ° to the keyway 86. Each of the support pins 90 and 92 has a conical tip which slides along the respective outer peripheral surface 56 of each movable member 28, 30 to deflect it as the key 10 is inserted. The support pins 90 and 92 are disposed on opposite sides of the keyway 86. Accordingly, the first pin tumbler 104 and the second pin tumbler 106 are also disposed on opposite sides of the key channel 86.

The Fig. 16A show a view of the key channel 86. The viewing direction is in the Fig. 13 shown. However, the key 10 is cut out except for the movable members 28 and 30. It has already been explained that the outer peripheral surface 56 is asymmetrical with respect to a respective disk center plane 52. As can be seen, each keyway 86 in a facing surface has a respective complementary cross-sectional profile to interrogate its asymmetrical outer peripheral cross-section of each movable element 28, 30. It can thus be seen that the first movable element 28 initially at a neutral position in the Fig. 16A "up" offset in the keyway 86 is guided. The second movable element 30 is correspondingly "down" offset guided by the keyway 86. The respective asymmetric outer peripheral cross-sections fit into the complementary profile cross-sections 108 and 110. The complementary profile cross-sections 108, 110 extend as longitudinal grooves completely through the keyway 86 and guide the movable elements during insertion of the key 10 to a rear end of the keyway 86, in that the movable elements 28, 30 are deflected by the support pins 90 and 92.

The Fig. 16B shows a view of the key channel 86. In the in the Fig. 16B illustrated position, the locking device 74 is in a release state. Like in the Fig. 16B As can be seen, the movable elements 28, 30 are then deflected in correspondingly opposite directions away from their respective complementary profile cross sections 108, 110. In this way, a labyrinth is provided by which the movable elements 28, 30 must be movably guided in order to reach the release state. It is thus imperative that the movable elements 28, 30 can be moved separately or independently of each other. In this way, the safety of the illustrated locking device 74 can be significantly increased. Furthermore, a security of the key 10 against unauthorized reworking or copies is significantly increased, because the movable elements 28, 30 must be known as separately movable elements and must be rebuilt.

Furthermore, further longitudinal grooves 112 and 114 and a first longitudinal groove 112 and a second longitudinal groove 114 are shown, which cooperate with corresponding elevations 22 of the key 10 and also serve as a safety-relevant query. It can be seen that the keyway 86 is formed point-symmetrical in its cross-section in order to support the function of the key 10 as a reversible key. The complementary profile cross sections 108, 110 are respectively arranged on an opposite side 116, 118 or a first opposite side 116 and on a second opposite side 118 of the key channel 86.

The FIGS. 17 and 18 show once again a clear view of the in the release state and in cooperation with the movable elements 28 and 30 mentioned elements of the lock cylinder 81. It is clearly recognizable once again the deflection of the movable elements 28 and 30 in opposite directions. These are deflected by the about the angle 120, in particular an angle of 45 °, relative to the keyway 86 and the first spatial direction 38 inclined support pins 90 and 92. These deflect each one of the movable elements 28, 30 and support this against a respective Kernstift 94, 98 from. By inserting the key 10, each of the movable elements 28, 30 is thus pushed between an associated support pin and core pin. The second movable member 30 is slid between the first support pin 90 and the first core pin 94. The first movable element 28 is between the second support pin 92 and the second core pin 98 pushed. Due to the fixed arrangement of the support pins 90, 92 while a respective movable element 28, 30 is deflected and moves a corresponding core pin 94, 98, so that an associated locking device 104, 106 is moved to the release state. As already stated above, in particular the movement of the movable elements 28, 30 takes place in mutually opposite directions.

The Fig. 19 1 shows a schematic view of the sequence of a method 122 for producing a key 10 for a closing device 74. In a first step 124, a key blank is provided, wherein the key blank has a key shank 14 extending along a longitudinal direction 16 with two key broadside faces 18, 18 ' wherein the key shank 14 has a recess 32 through the key broadside faces 18, 18 ', and wherein the key blank has at a first key broadside face 18 at least a first holding portion 33 extending into the recess 32, an extension of the recess 32 into a second Direction of space 40, which runs parallel to the key broad side surfaces 18, 18 ', is reduced in size in the region of the first holding section 33.

In a further step 126, at least two movable elements 28, 30 are inserted into the recess 32, wherein the extent of the recess in the second spatial direction in the region of the first holding portion 33 is smaller than a maximum extent of the at least two movable elements 28, 30 in the second spatial direction 40. Thus, the movable elements 28, 30 in the recess 32, in particular from falling out by the first key broadside surface 18, secured.

In a further step 128, the recess 32 is cold formed on a second wrench broad side surface 18 ', in particular wherein at least one edge of the recess 32 is cold formed to form at least a second holding portion 34 which extends into the recess 32, so that an extension the recess 32 in the second spatial direction 40 in the region of the second holding portion 34 is smaller than the maximum extent of the at least two movable elements 28, 30 in the second spatial direction 40. Thus, the movable elements 28, 30 in the recess 32, in particular from falling out by the second key broadside surface 18 'secured.

Preferably, the second holding portion 34 is formed by applying force, in particular by chiselling, by means of a punch or other tool designed for this purpose.

The Figs. 20A and 20B each show two different embodiments of the first method step of providing 124 a key blank.

A first embodiment is in the Fig. 20A is shown. In a first step 130, the key blank is produced by casting. The key blank is cast in such a way that this key blank differs from the key blank after method step 124 only in that it does not have the recess 32 and the at least one first holding section 33. In an alternative embodiment of the method 122, it may also be provided that the key blank is produced by casting in such a way that it has all the features of the key blank after the method step 124.

In a further step 132, the recess 32 in the key shank 14 is formed by machining, in particular drilling and / or milling.

In a further step 134, the recess 32 on the first key broadside side surface 18 'cold formed, in particular wherein at least one edge of the recess 32 is cold formed to form the at least one first holding portion 33 which extends into the recess 32 so that a Extension of the recess 32 in the second spatial direction 40 in a region of the at least one first holding portion 33 is smaller than the maximum total extension of the at least two movable elements 28, 30 in the second spatial direction 40. Thus, the movable elements 28, 30 in the recess 32nd , in particular from falling out by the first key broadside side surface 18, secured.

Preferably, the first holding portion 33 is formed by applying force, in particular by chiselling, by means of a punch or other tool designed for this purpose.

A second embodiment of the method step of providing 124 a key blank is in the Fig. 20B is shown. In a first step 130, the key blank is produced by casting. The key blank is cast in such a way that this key blank differs from the key blank after method step 124 only in that it does not have the recess 32 and the at least one first holding section 33

In a further step 136, the recess 32 and the at least one first holding portion 33 are formed in the key shank 14 by machining, in particular drilling and / or milling, so that an extension of the recess 32 in the second spatial direction 40 in the region of at least one first holding portion 33 is smaller than the maximum total extension of the at least two movable elements 28, 30 in the second spatial direction 40. Thus, the movable elements 28, 30 in the recess 32, in particular from falling out by the first key broadside surface 18, secured.

Preferably, the first holding portion 33 is formed by applying force, in particular by chiselling, by means of a punch or other tool designed for this purpose.

Fig. 21 shows an illustrated representation of the widening 138 of the corners of the recess 32 of the key 10. For this purpose, a milling machine with a milling head 140 is preferably used, which may be formed in particular substantially round. Fig. 21 shows the recess 32 from the same perspective as Fig. 10G , Fig. 21 shows therefore a cross section of the recess 32 perpendicular to the third spatial direction 42. The milling head 140 is thereby moved along the path 142 outlined. As a result, the outer contour of the recess 32 is formed by the milling. The milling head 140 performs the following movements: The milling head forms a first corner region 73 and becomes guided transversely to the opposite longitudinal side of the recess 32 to form the second corner portion 73. The milling head 140 is next partially returned in the transverse direction. In Fig. 21 The length of the return corresponds approximately to half the width of the milling head 140. The milling head 140 is guided in the longitudinal direction 16 to the opposite transverse side of the recess 32. The milling head 140 is again guided in the transverse direction to form the third corner region 73. In this case, the direction of movement of the direction of movement corresponds to the formation of the second corner region 73. Thereafter, the milling head 140 is guided in the transverse direction to the opposite longitudinal side of the recess 32 to form the fourth corner region 73. The milling head 140 may be partially returned in the transverse direction next. In Fig. 21 Corresponds to the length of the return again in about half the width of the milling head 140. Thereafter, the milling head 140 can be performed in the longitudinal direction 16 to the opposite transverse side of the recess 32. By the described method 138, the recess 32 is given a rectangular base area and four semicircular corner areas 73.

Preferably, the first corner region 73 can also be formed by drilling by means of a drill, wherein the size of the drill to be used preferably corresponds to the size of the milling head 140. The milling head 140 can then be inserted into the first corner region 73. The recess 32 may then be formed by milling according to the method 138 described above.

It can also be provided that a further embodiment of the recess 32 has a rectangular base with rounded corners, such as in Fig. 10E described. The rectangular base in Fig. 10E corresponds to the cross-sectional area of the recess 32 perpendicular to the third spatial direction. Such a recess 32 can be machined by means of the described method for expanding the corners 138, whereby the widened corner regions 73 are formed.

Preferably, it can also be provided that the tools used in forming 132, 136 of the recess 32, in particular drills or milling machines, are variable in their penetration depth with respect to the third spatial direction when forming the recess 32. Preferably, the tools can not be partially passed through the entire key thickness, thereby on the first key broadside side surface 18th to form the at least one holding portion 33. The key thickness corresponds to the extent of the key 10 in the third spatial direction 42 in the region of the key broadside surfaces 18, 18 ', ie the distance of the two key broadside surfaces 18, 18'.

Claims (23)

1. Key (10) for a lock cylinder (76), wherein the key (10) has a key shank (14), which extends along a longitudinal direction (16) and has two broad-side surfaces (18, 18'), wherein the key shank (14) has an aperture (32) through the broad-side surfaces (18, 18'), wherein at least two movable elements (28, 30) are arranged one beside the other in the aperture (32) in a first direction in space (38), which runs perpendicularly to the longitudinal direction (16) and parallel to the broad-side surfaces (18, 18') wherein, on each of the broad-side surfaces (18, 18'), the key (10) has at least one retaining portion (33, 34), which extends into the aperture (32), wherein an extent of the aperture (32) in a second direction in space (40), which runs parallel to the broad-side surfaces (18, 18'), in the region of the retaining portions (33, 34) is smaller than a maximum extent of the at least two movable elements (28, 30) in the second direction in space (40), and therefore each of the at least two movable elements (28, 30) is secured in the aperture (32),
   characterized in that the aperture (32) has an essentially rectangular surface area, which is located perpendicularly to a third direction in space (42), wherein the third direction in space runs perpendicularly to the broad-side surfaces.
2. Key (10) according to Claim 1, characterized in that, on each of the broad-side surfaces (18, 18'), the key (10) has in each case two retaining portions (33, 33', 34, 34'), wherein the two retaining portions (33, 33', 34, 34') are arranged opposite one another, as seen in the second direction in space (40), on the aperture (32).
3. Key (10) according to Claim 1, characterized in that, on each of the broad-side surfaces (18, 18'), the key (10) has precisely one retaining portion (33, 34), which surrounds the aperture (32).
4. Key (10) according to one of Claims 1 to 3, characterized in that the second direction in space (40) corresponds to the longitudinal direction (16) .
5. Key (10) according to one of Claims 1 to 3, characterized in that the second direction in space (40) runs transversely or perpendicularly to the longitudinal direction (16).
6. Key (10) according to one of Claims 1 to 5, characterized in that the aperture (32) is arranged symmetrically in relation to a centre plane (36) of the key shank (14), said centre plane extending perpendicularly to the broad-side surfaces (18, 18') and parallel to a in the longitudinal direction (16).
7. Key (10) according to one of Claims 1 to 6, characterized in that the at least two movable elements (28, 30) are arranged symmetrically in relation to a centre plane (36) of the key shank (14), said centre plane extending perpendicularly to the broad-side surfaces (18, 18') and parallel to the longitudinal direction (16).
8. Key (10) according to one of Claims 1 to 7, characterized in that the key (10) has precisely two movable elements (28, 30).
9. Key (10) according to one of Claims 8, characterized in that in each case one of the two movable elements (28, 30) is arranged on each side of a centre plane (36) of the key shank (14), said centre plane extending perpendicularly to the broad-side surfaces (18, 18') and parallel to the longitudinal direction (16).
10. Key (10) according to one of Claims 1 to 9, characterized in that a maximum extent (43) of each movable element (28, 30) in a direction perpendicular to the broad-side surfaces (18, 18') is greater than a distance (39) between the broad-side surfaces (18, 18').
11. Key (10) according to one of Claims 1 to 10, characterized in that the at least two movable elements (28, 30) can be moved relative to the key shank (14) in the third direction in space (42), which runs perpendicularly to the broad-side surfaces (18, 18'), in particular wherein the at least two movable elements (28, 30) can be moved relative to one another.
12. Key (10) according to Claim 11, characterized in that the aperture (32) guides the at least two movable elements (28, 30) in the third direction in space (42).
13. Key (10) according to one of Claims 1 to 12, characterized in that the at least two movable elements (28, 30) are arranged one beside the other in abutment with a respective exposed abutment surface (44), and the abutment surfaces (44) run perpendicularly to the first direction in space.
14. Key (10) according to one of Claims 1 to 13, characterized in that the surface of the movable elements (28, 30) is continuous, in particular wherein the movable elements (28, 30) are of solid design.
15. Key (10) according to one of Claims 1 to 14, characterized in that the movable elements (28, 30) are formed asymmetrically, in particular wherein the at least two movable elements (28, 30) are arranged in mirror symmetry in relation to one another.
16. Key (10) according to one of Claims 1 to 15, characterized in that the aperture (32) is arranged in a front third (26) of the key shank (14), said front third being directed away from a key head (12).
17. Key (10) according to one of Claims 1 to 16, characterized in that the aperture (32) has corner regions (73) which are widened at the corners of the surface area, in particular has semi-circular corner regions (73).
18. Locking device (74) having a key (10) according to one of Claims 1 to 17 and having a lock cylinder (76), wherein the lock cylinder (76) has a housing (78) and a cylinder core (80), wherein the lock cylinder (76) has at least one blocking safeguard (104, 106), wherein the at least one blocking safeguard (104, 106) can be moved between a blocking state and a release state and, in the blocking state, blocks a rotary movement of the cylinder core (80) in relation to the housing (78) and, in the release state, releases said rotary movement, wherein at least one movable element (28, 30) is assigned one of the at least one blocking safeguard (104, 106), and wherein the lock cylinder (76) can be transferred from the blocking state into the release state by virtue of the key (10) being introduced fully into a key channel (86) of the cylinder core (80), characterized in that, for at least one movable element (28, 30), the cylinder core (80) has a supporting pin (90, 92) assigned to the associated blocking safeguard (104, 106), and wherein the associated blocking safeguard (104, 106) can be moved into the release state by virtue of at least one movable element (28, 30) being introduced between the associated supporting pin (90, 92) and the associated blocking safeguard (104, 106).
19. Method (122) for producing a key (10) for a locking device (74), characterized by the following steps:

    - supplying (124) a key blank, wherein the key blank has a key shank (14) with two broad-side surfaces (18, 18'), said key shank extending along a longitudinal direction (16), wherein the key shank (14) has an aperture (32) through the broad-side surfaces (18, 18'), and wherein, on a first broad-side surface (18), the key blank has at least one first retaining portion (33), which extends into the aperture (32), wherein the aperture (32) has a reduced extent in a second direction in space (40), which runs parallel to the broad-side surfaces (18, 18'), in the region of the first retaining portion (33), wherein the aperture (32) is formed by drilling and milling such that the aperture (32) has an essentially rectangular surface area, which is located perpendicularly to a third direction in space (42), wherein the third direction in space runs perpendicularly to the broad-side surfaces,

    - inserting (126) at least two movable elements (28, 30) into the aperture (32), so that the at least two movable elements (28, 30) are arranged one beside the other in the aperture (32) in a first direction in space (38), which runs perpendicularly to the longitudinal direction (16) and parallel to the broad-side surfaces (18, 18'), wherein the extent of the aperture (32) in the region of the first retaining portion (33) is smaller than a maximum extent of the at least two movable elements (28, 30) in the second direction in space (40), and

    - forming (128), in particular cold forming or cold massive forming, the aperture (32), in particular at least one edge of the aperture (32), on a second broad-side surface (18') in order to provide at least one second retaining portion (34), which extends into the aperture (32), so that an extent of the aperture (32) in the second direction in space (40) in the region of the second retaining portion (34) is smaller than the maximum extent of the at least two movable elements (28, 30) in the second direction in space (40).
20. Method (122) according to Claim 19, characterized in that the step of supplying (124) the key blank also includes:

    - forming (132) the aperture (32) in the key shank (14) by machining, in particular drilling and/or milling.
21. Method (122) according to Claim 19 or 20, characterized in that the step of supplying (124) the key blank also includes:

    - forming (134), in particular cold forming or cold massive forming, the aperture (32), in particular at least one edge of the aperture (32), on the first broad-side surface (18') in order to provide the at least one first retaining portion (33), which extends into the aperture (32), so that an extent of the aperture (32) in the second direction in space (40) in a region of the at least one first retaining portion (33) is smaller than the maximum overall extent of the at least two movable elements (28, 30) in the second direction in space (40);
    in particular wherein the at least one first retaining portion (33) is formed by force being applied, in particular by pressing action, for example by means of a punch or ram or of some other tool designed for this purpose.
22. Method (122) according to one of Claims 19 to 21, characterized in that the corners of the aperture (32) are widened such that the aperture (32) has corner regions (73) which are widened at the corners of the surface area, in particular has semi-circular corner regions (73).
23. Method (122) according to one of Claims 19 to 22, characterized in that the at least one second retaining portion (34) is formed by force being applied, in particular by pressing action, for example by means of a punch or ram or of some other tool designed for this purpose.

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