EP3800010A1 - Switch cabinet key - Google Patents

Abstract

The invention relates to a switch cabinet key 1 with a central base body 2, from which several key arms 3, 4, 5, 6 protrude radially, at the radial outer ends of which tool heads are formed, with at least one tool head 31, 41, 51, 61 being designed as a socket wrench , in which the tool head has a first drive profile 511 for operating a lock or the like, which extends in a primary key arm tool plane of the respective key arm 3, 4, 5, 6. To increase the longevity (service life) of such a switch cabinet key while maintaining the weight The invention proposes that at least one tool head 31, 41, 51, 61 is designed to operate two different fastening means and has a second drive profile 512 for this purpose, and that the second drive profile 512 is offset proximally from the first drive profile 511 in a secondary key arm tool plane the key arm tool level net, and that at least corners of the second drive profile 512 are partially formed in the primary key arm tool plane to form pre-engagement surfaces.

Description

The invention relates to a switch cabinet key with a central base body, from which several key arms protrude radially, at the outer ends of which tool heads are formed, with at least one tool head being designed as a socket wrench, in which the tool head defines a receiving space that includes a first drive profile (key surface) , which is designed to operate a complementarily designed clasp, a lock, possibly also a nut or the like. The drive profile often includes an enclosed receiving space. The first drive profile extends in a primary key arm tool plane of the respective key arm, which in turn extends transversely to a respective key arm longitudinal axis, the key arm longitudinal axes of all key arms intersecting in the center of the base body, whereby the base body forms the point of intersection of the key arm longitudinal axes. Furthermore, a second drive profile can be formed in the tool head, which is different from the first drive profile.

State of the art

Such a switch cabinet key is, for example, from EP 1 422 365 B1 known to the applicant.

This switch cabinet key has a central body with four radially protruding key arms. At the outer ends of the key arms, tool heads are formed which have different head shapes for actuating different switch cabinet locks.

One or more tool heads of such a switch cabinet key are designed as a socket wrench with an inner receiving space that is circumferentially enclosed by a drive profile or a key surface that is designed to operate a complementary lock, a lock, a switch cabinet, a door or the like. The key surface can be designed as a triangle, a square, but also a hexagon, for example. The first key arm tool plane extends transversely to the longitudinal axis of a key arm through this receiving space, wherein this first key arm tool plane can extend at any point transversely to the receiving space along its entire longitudinal direction.

In order to increase the areas of application of such a switch cabinet key, it is already known to provide an insertion tool and / or an adapter piece with a loss protection on this. This allows a tool head to be used directly. Alternatively, the insert tool is used in the tool head or attached to a tool head via the adapter piece and screwed with the insert tool instead of the tool head itself.

Disadvantages of the prior art

During the development of the invention it was found that the drive profiles of the switch cabinet key only engage with all surfaces of the respective joining partner under optimal conditions that are complementary Surfaces of the drive profile and the joining partner actually only lie flat against one another under optimal conditions. Inaccuracies in production, tolerance deviations, soiling and wear and tear, however, inevitably lead to the surfaces not being in optimal contact with one another, but rather that the joining partners often only engage with one another with the edges or corners. This is referred to as "edge contact" or "corner contact" in the context of the invention. However, this edge contact reduces the torques to be transmitted or puts a considerable strain on the joining surfaces, leading to material fatigue and breakage of the tools.

Furthermore, the market is increasingly demanding that a switch cabinet key cover an even broader range of possible uses, i.e. that it can be used in an even more diverse manner. However, this runs counter to the general wish that the size of such a switch cabinet key cannot be increased at will, that it should only have a certain size so that it can also be used in cramped situations and is easy to carry, i.e. does not have increased weight and is easy to use the pocket is to be tucked.

Task / technical problem

Based on this prior art, the invention is based on the object of at least partially avoiding these disadvantages and, in particular, further developing a control cabinet key mentioned at the beginning so that material fatigue is avoided as far as possible and the control cabinet key and the parts to be joined thus have a longer service life.

invention

According to the invention, this object is already achieved by the features of claim 1 and advantageous further developments are reproduced in the dependent claims. The invention thus makes use of the surprising finding that in particular the corners of the joining surfaces that interlock in pairs are particularly important. The angular offset of the drive profiles or their joining surfaces to one another ensures that the corners are available for the complementary engagement of the joining surfaces or their edges. In this respect, the partial formation of the second drive profile in the primary key arm tool level is sufficient for realizing the edge engagement. Full engagement is achieved when the joining partner to be actuated has been pushed completely into the second key arm tool level.

In this respect, the invention also makes use of the connection of different types of offset of a second drive profile in relation to a first drive profile.

According to the invention, off-axis means that the central axis of the second drive profile in a key arm tool plane is offset in relation to the central axis of the first drive profile so that it is at a distance from this so that all corners of the second drive profile are already available in the first key arm tool plane for at least one edge engagement. According to the invention, angular or rotationally offset is to be understood as meaning that two drive profiles are arranged coaxially, i.e. with the same central axis in a key arm tool plane, but the second drive profile is arranged at a different angle in relation to the first drive profile, i.e. in relation to the first drive profile is rotated. The profiles are preferably at an angle of 45 to 60 degrees, preferably 45 or 60 degrees angularly or rotationally offset to one another. And linear offset or linear offset means according to the invention that the second drive profile is arranged in relation to the first drive profile on a different plane in the direction of longitudinal extent along the longitudinal axis of the key arm. The invention now combines these types of offset in all possible combinations, multiple times in each key arm if possible. In particular, however, a linear offset with a rotational offset and possibly also with an axial offset in at least one key arm, preferably in several key arms.

The key arm longitudinal axis extends centrally along each key arm and the primary key arm tool level is the tool level directly accessible from the outside of a key head and extends from the outer surface or the outer opening of a tool head to about 6 mm into the respective tool head and sometimes goes into there a second key arm tool level, which again has a depth of 3-5 mm.

In the most abstract embodiment, this object is already achieved in a switch cabinet key of the type mentioned in that the second drive profile is partially linearly offset proximally to the base body in a secondary key arm tool level and that this second drive profile is also partially, at least with the corners, in the primary key arm tool level is formed, so also extends into the first key arm tool level. Since the second drive profile is also rotationally offset from the first drive profile, the corners of the second drive profile in the primary key arm tool plane thus form pre-engagement surfaces according to the invention, with which, in most applications, the engagement of the lock, tool or the like can already be realized through the edge engagement. Only in the case of particularly old and worn locks with worn flanks does the key arm have to be pushed in completely until the second drive profile fully engages. This reduction to the edge engagement represents an essential aspect and an essential insight of the invention. This also offers the advantage that the key or joining partner that can be actuated with the smaller drive profile in the secondary key arm tool level can be made shorter because it is only completely in exceptional cases must protrude into the secondary key arm tool level.

Preferred embodiments include that the second drive profile is also arranged offset in rotation with respect to the first drive profile. For this angular or rotational offset, an angle between 0 and 45 degrees of rotation has proven to be expedient; particularly preferred results and stable wall thicknesses of the key arm were achieved at 45 degrees of offset.

Even better service lives and broader application possibilities can be achieved by designing a further, i.e. third drive profile with an axial offset to the first drive profile in the primary key arm tool plane, and that this third drive profile is also rotationally offset with an angular offset at an angle to the first drive profile in the primary key arm tool level is formed.

It has proven to be useful that the second Drive profile is only partially formed or is pronounced in the first key arm tool level and only then is the full drive profile formed in a second or secondary key arm tool level below, which is therefore formed in the direction of the main body in the key arm. This partial formation of the second drive profile in the primary key arm tool level thus already provides a "pre-grip surface" for transmitting smaller torques of the second drive profile, but the full torque only when inserted into the second key arm tool level below the key arm tool level.

The drive profiles preferably have different geometric configurations, but the drive profiles can also have different sizes. With surprisingly simple means, this embodiment offers the advantage that several different wrench surfaces can be formed on a tool wrench level in a tool head, that is to say only minor changes to the tools are required in a minimal space to increase functionality. This is particularly advantageous compared to other configurations with several tools on a switch cabinet key, because no further keys, adapters or the like have to be provided that would make the switch cabinet key heavier or more complex.

The first drive profile can, for example, be triangular and the second drive profile square, the square - second - drive profile being offset off-center from the center of the triangular wrench surface.

This has the advantage that the square wrench surface is almost completely available for the force intervention, although this is partially interrupted by the first, triangular wrench surface.

In addition to a triangular and a square wrench area, it is of course also possible to provide other geometric combinations of the wrench areas or to connect them to one another.

The application possibilities can be increased even further for a given size of the switch cabinet key in that different drive profiles are also formed in different planes in the longitudinal direction of a key arm or tool head, i.e. a further drive profile in a linear offset inward from the first key arm tool plane in the direction of the base body - further - Key arm tool level. For example, it is possible that a first, central drive profile and a second drive profile offset from the first drive profile are both formed in the first key arm tool plane, and a third drive profile is formed in a second key arm tool plane offset inwardly to the base body, e.g. with a smaller hexagon, which only begins at an insertion depth of 9 to 10 mm.

In order to increase the torque applied by the user even in confined spaces, it has proven to be expedient for at least one of the key arms to have a key face on the outside, especially with smaller switch cabinet keys, e.g. with a length of 65 mm from the outer end of a first key arm to the outer end of the opposite key arm has to attack a wrench, particularly preferably designed as a hexagon. Each of the key arms preferably has such key surfaces, In a further development, key surfaces of different sizes can be provided on different arms or, on both sides from the center point, a first key surface on one side and a second other key surface on the opposite side of the key arm. These wrench surfaces are designed in particular to interact with an open-end wrench or open-ended wrenches of different wrench sizes.

A key arm preferably comprises a double bit as a tool. Such a double bit comprises a cylindrical base body which extends along the longitudinal axis of the key arm and which surrounds it with its cylindrical outer surface, from which two beards extend diametrically opposite radially outward. Each beard is basically designed as a cuboid body, which comprises a distal or end-face beard insertion surface and two beard flanks spaced radially outward from the cylindrical base body and spaced from one another by the width of the insertion surface, which extend from the cylindrical jacket surface of the outer beard surface to a radially outer beard surface extends, which merge at the - rear - proximal ends in the lateral surface of the key arm or connect to this.

The stability against wear and tear or the service life is improved in such a double bit that the double bit has an inside collar or an inside stabilizing flange at the transition into the ironing area of the key arm, which extend transversely to the key arm longitudinal axis.

During the development of the invention it has also been found that this inside collar has the notch effect, in particular on the base of the flanks of the beards of the double beard considerably reduced, so that with such a double bit, about 30-50% higher torques can be transmitted than with a double bit without such an inside collar.

A further improvement in service life can be achieved in that the diametrically radially protruding beards protruding from the central, cylindrical outer surface are wider in the area of the outer surface than on the outer beard surfaces or extend from their radially outer beard surfaces to the cylindrical outer surface, i.e. from the outside running inwards, in order to reduce the notch effect at the transition of the beards into the central, cylindrical outer surface of the double beard, or to make the beards more stable and thus to compensate for any play that may occur between the joining partners, i.e. if a beard is not two-dimensionally correct seated in the complementary recess of the joining partner / lock. The inventive concept of edge engagement is also used here.

During the development of the invention, a conical widening of the beards from the outside to the inside has proven to be particularly useful, because this realizes a harmonious transition and compensates for signs of wear on the lock or the joining partners in the long term or realizes a large number of fits even with signs of wear.

The particularly preferred embodiment provides that each beard on the beard base, i.e. radially on the inside, directly adjoining the cylindrical base body, is in the range of 8 to 12%, preferably 10% wider than on the radially outer outer flank of the beard. This is done, for example, by a slightly inclined to the central axis The flank of the beard, which includes, for example, an angle between 5 to 8 degrees, preferably 6 degrees, with the central axis. A uniform increase in the beard width to the beard base is useful in order to harmoniously compensate for any play that may occur, e.g. due to aging between the joining partners.

A particularly long service life or a particularly long service life and stability of a double beard is achieved by combining the two new developments, i.e. the beards widening radially from the outside inwards, merging into a stabilizing flange at their distal ends towards the base body or such Have stabilization on flange.

For the purposes of the invention, proximal is the radially outer end of a key arm and distal is an alignment to the center of the base body.

In the preferred embodiment, 3 of the total of 4 key arms formed in a second key arm tool level comprise further drive profiles opposite the first key arm tool level of the respective key arm. Numerous combinations are possible in this way. For example, in the first key arm tool level, two square profiles arranged at an angle to each other with a rotational offset, one of which extends into the second key arm tool level or is only fully formed in this second key arm tool level.

Another design of a key arm provides that a triangular drive profile is formed in the first key arm tool level and offset to this in the first key arm tool level and also rotated to this, another square drive profile that in the first key arm tool level only with the anticipation surfaces is designed and then as a full profile in the inwardly offset second key arm tool level.

The drive profiles are preferably designed as closed profiles, although this need not necessarily be the case.

The key arms are expediently arranged in one plane and thus form a key plane.

The switch cabinet key can also include an adapter piece for receiving an insert tool, which can preferably be attached to at least one of the tool heads.

The insertion tool is preferably attached with an anti-loss device, which is particularly preferably designed as a chain. This chain is preferably attached to a fastening part that is formed laterally on the central base body and between two key arms.

The insertion tool can have a hexagonal circumferential area which can be inserted into a non-rotatable receptacle provided on a tool head.

In addition, the insertion tool can comprise a screwing tool, which preferably has different screw drives at opposite ends.

The base body can also have a square receptacle with which a vent valve of a radiator can be opened and closed.

Another embodiment provides that a tool head has a pyramid-shaped plug-in element which can be attached to square openings of different sizes.

In the preferred embodiment, there is the switch cabinet key made of plastic or die-cast and comprises four key arms protruding radially from the base body, which define a common key plane.

The switchgear cabinet key can also be operated particularly well in confined spaces and with a small design if at least one key arm has a key surface for an open-end wrench or the like on the outside of the key arm. This can be done, for example, by flattening the front and back of at least one key arm, but it can also include an outside square or hexagon on the key arm.

In order to offer a particularly wide range of uses, it is advantageous to form an outside key surface on each key arm.

In the following detailed description, reference is made to the accompanying drawings, which form a part of this description of the invention, and in which there are shown, for purposes of illustration, specific embodiments in which the invention may be practiced. In this regard, directional terminology such as "top", "bottom", "front", "back", "front", "back", etc. are used in relation to the orientations of the figure (s) being described. Because components of embodiments can be positioned in a number of different orientations, the directional terminology is used for purposes of illustration and is in no way limiting.

It goes without saying that other embodiments can be used and structural or logical changes can be made without departing from the scope of protection of the present invention. The following detailed description is not to be taken in a limiting sense.

In the context of this description, the terms “connected”, “connected” and “integrated” are used to describe both a direct and an indirect connection, a direct or indirect connection and a direct or indirect integration. In the figures, identical or similar elements are provided with identical reference symbols, insofar as this is appropriate.

Figur 1:

eine Frontansicht des erfindungsgemäßen Schaltschrankschlüssels;

Figur 2

eine Draufsicht des Schaltschrankschlüssels gemäß Figur 1 mit erstem Werkzeugkopf mit einem Doppelbart;

Figur 3

eine linksseitige Seitenansicht des Schaltschrankschlüssels gemäß Figur 1 mit dem Dreikant/Dreikant Werkzeugkopf;

Figur 4

eine Ansicht des Schaltschrankschlüssels gemäß Figur 1 von unten mit dem Dreikant/Vierkant Werkzeugkopf;

Figur 5

eine rechtsseitige Seitenansicht des Schaltschrankschlüssels gemäß Figur 1 mit dem Vierkant/Vierkant Werkzeugkopf;

Figur 6

eine Rückenansicht des Schaltschrankschlüssels gemäß Figur 1 mit dem Innensechskant;

Figur 7

eine isometrische Frontansicht des Schaltschrankschlüssels gemäß Figur 1;

Figur 8

eine isometrische Rückansicht des gegenüber der Figur 1 gedrehten Schaltschrankschlüssels

Figuren

9A-D Detailansichten des ersten Werkzeugkopfs ausgebildet als Doppelbart;

Figuren 10A-D

Detailansichten des zweiten Werkzeugkopfs ausgebildet mit einem linear- und drehversetzten Vierkant/Vierkant

Figuren 11A-D

Detailansichten des dritten Werkzeugkopfs mit einem achsversetzten Dreikant/Vierkant in der primären Schlüsselarmwerkzeugebene;

Figuren 12A-D

Detailansichten des vierten Werkzeugkopfs mit einem linear- und drehversetzten Dreikant/Dreikant.

Figur 13A

eine vergrößerte Detailansicht der Vorderseite des Grundkörpers mit einem Heizungsentlüftungsschlüssel;

Figur 13B

einen vergrößerten Querschnitt der Detailansicht gemäß Figur 13A;

Figur 14A

eine vergrößerte Detailansicht der Rückseite des Grundkörpers mit einem Bit Schlüsselkreuz;

Figur 14B

einen Querschnitt der Detailansicht gemäß Figur 14A;

Figur 15

eine vergrößerte Stirnansicht eines Doppelbarts mit sich radial nach innen verbreiternden Flanken; und

Figur 16

eine isometrische vergrößerte Draufsicht des zweiten Werkzeugkopfs mit dem linear- und drehversetzten Vierkant/Vierkant.

Reference symbol lines are lines that connect the reference symbol to the relevant part. On the other hand, an arrow that does not touch any part refers to an entire unit at which it is directed. Incidentally, the figures are not necessarily to scale. Certain areas may be exaggerated to show details. In addition, the drawings can be strikingly simplified and do not contain every detail that may be present in the practical implementation. The terms “above” and “below” relate to the representation in the figures. Show it:

Figure 1:

a front view of the switch cabinet key according to the invention;

Figure 2

a top view of the switch cabinet key according to Figure 1 with the first tool head with a double bit;

Figure 3

a left-hand side view of the switch cabinet key according to Figure 1 with the triangular / triangular tool head;

Figure 4

a view of the switch cabinet key according to Figure 1 from below with the triangular / square tool head;

Figure 5

a right side view of the switch cabinet key according to Figure 1 with the square / square tool head;

Figure 6

a rear view of the switch cabinet key according to Figure 1 with the hexagon socket;

Figure 7

an isometric front view of the switch cabinet key according to Figure 1 ;

Figure 8

a rear isometric view of the opposite of that Figure 1 turned switch cabinet key

characters

9A-D detailed views of the first tool head designed as a double bit;

Figures 10A-D

Detailed views of the second tool head designed with a linear and rotationally offset square / square

Figures 11A-D

Detailed views of the third tool head with an axially offset triangle / square in the primary key arm tool level;

Figures 12A-D

Detailed views of the fourth tool head with a linear and rotationally offset triangle / triangle.

Figure 13A

an enlarged detailed view of the front of the base body with a heater ventilation key;

Figure 13B

an enlarged cross-section of the detailed view according to Figure 13A ;

Figure 14A

an enlarged detailed view of the rear of the base body with a bit key cross;

Figure 14B

a cross section of the detailed view according to figure 14A ;

Figure 15

an enlarged end view of a double beard with flanks widening radially inward; and

Figure 16

an isometric enlarged plan view of the second tool head with the linear and rotationally offset square / square.

The Figures 9 to 12 comprise sequences of figures each with four individual representations A to D to illustrate the specific design of the respective tool heads. In each figure, FIG. A shows an enlarged plan view, FIG. B shows a cross section of the front view according to FIG. A, FIG. C shows a cross section of the top view, i.e. at right angles to the plane defined by the front view according to FIG respective tool head.

According to the drawing, the switch cabinet key 1 consists of a central base body 2 with four radially protruding key arms, namely a first key arm 3 with a first tool head 31 designed as a double bit, a second key arm 4 with a second tool head 41 comprising a square / square double tool, a third Key arm 5 with a third tool head 51 comprising a square / triangular double tool and a fourth key arm 6 with a fourth tool head 61 comprising a triangular / triangular double tool, which together form a key cross.

The central base body 2 comprises two additional tool heads 21, 22. This is oriented approximately perpendicular to the radial key arms 3, 4, 5 and 6. The key arms 3, 4, 5 and 6 define a main key plane. On the On one side of the base body 2, this tool head is designed with a square socket 21 and on the opposite side with a hexagon socket 22.

On the side of the central base body 2 and between two key arms 4 and 5, a fastening part 8 is provided for securing against loss. The fastening part 8 is designed as a tab with an opening 81. A closed, ring-shaped chain, not shown, can be provided as a safeguard against loss. An insertion tool and an adapter piece are then suspended from the chain, which can preferably be designed as an insertion tool or as a screwing tool in the form of a so-called bit.

It can be clearly seen in the Figure 3 , which shows a longitudinal section through the switch cabinet key 1 that the second key arm 4, the third key arm 5 and the fourth key arm 6 always include two drive profiles, of which the second drive profile is formed proximally linearly offset to the base body 2 in a respective secondary key arm tool level and its corners or edges also extend into the primary key arm tool plane, which is directly visible from the outside, for the formation of pre-engagement surfaces in the respective primary tool planes.

The first tool head 31 is designed as a double bit, which comprises a cylindrical base body 311, the outer surface of which encloses the key arm longitudinal axis running through the center of the key arm. In one piece formed on this cylindrical base body 311, two beards 312, 313 protrude radially opposite to the outside. At the inside end of the double beard at the transition to the first key arm 3, this is formed with a circumferential stabilizing flange 314, which the beards 312, 313 additionally stabilized and the notch effect on the beards 312, 313 of the cylindrical base body 311 is considerably reduced.

Sequence of figures 9 with individual figures 9A to 9D shows an enlarged detailed view of the first tool head 31 with the double bit, that is, along the longitudinal axis of the key arm on the distal end of the first key arm 3, the details being provided with reference numerals for better clarity only for one bit 312. Each beard 312, 313 of the double beard is formed by a front beard insertion surface 3121, from which two beard flanks 3122, 3123 extend at a distance to the rear to the stabilization flange 314 and between the cylindrical base body 311 and an outer beard surface 3124 to form the cuboid beards 312, 313. The stabilizing flange 314 is also made wider than the cylindrical base body 311

The beards 312, 313 are preferably designed in such a way that the beard flanks 3122, 3123 widen conically from the outer beard surface 3124 to the cylindrical base body 311, this widening increasing particularly strongly in the area of the base body 311, so that this widening provides an enlarged area for the Provides edge engagement (see in particular Figure 15 ).

The front view according to Figure 9D and the enlarged front view according to Figure 15 also show a bit holder 315 for a minibit hexagon, which is provided in the circular central opening of the cylindrical base body 311, the outer circumferential surface of which surrounds the key arm longitudinal axis in a circular ring, proximal to the double bit in a secondary key arm tool surface.

The second tool head 41 is designed as a "square / square". This comprises a first drive profile designed as a first square 411 arranged in the primary, distal key arm tool plane and proximal of this primary key arm tool plane in the secondary key arm tool plane, a second drive profile designed as a second square 412. Here, too, the second square 412 is arranged collinearly with the first square 411, but smaller than the first square 411 and rotated by about 45 degrees relative to it about the longitudinal axis of the key arm. In addition, a hexagon socket 413 is provided in this second tool head 41 collinear to the first square 411 and the second square 412, and proximal to the latter in a tertiary key arm tool surface, which in turn is smaller than the second square 412 and insofar is framed or enclosed by it .

In the enlarged isometric top view of the second tool head 41 according to FIG Figure 16 It is clearly visible that the first square 411 in the primary, i.e. distal key arm tool plane, which extends from the distal outer edge to the end of this square key surface, is about 6 mm deep, whereas the second square 412, which is coaxial with the primary key arm tool surface, is approximately 6 mm deep Proximal to the first and 45 degrees rotated about the key arm longitudinal axis at a depth of approx. 3 to 5 mm following the primary key arm tool level, but the four edges or corners of the second square 412 extend into the first key arm tool level and there form the pre-engagement surfaces according to the invention, which, however, are provided in this way on each tool head.

The third tool head 51 is designed as a double wrench head and includes the combination of a triangular and a square drive profile (triangle / square). The larger, triangular drive profile 511 is again arranged in the primary tool wrench plane collinear to the longitudinal axis of the key arm of the third key arm 5. The smaller, square drive profile 512, on the other hand, is arranged in the secondary key arm tool plane proximal to the primary and also axially and rotationally offset to the triangular drive profile 511, whereby a sufficient wall thickness of the key head 51 is provided for the square drive profile 512 and that from the leg of the triangular Drive profile 511 downwardly protruding area of the square drive profile 512 is provided as additional contact surfaces for the transmission of the torque and in particular all corners of the square drive profile 512 are available for edge engagement. The smaller square drive profile 512 is also arranged approximately twice as deep in the key arm 5 as the triangular drive profile 511, but extends from the secondary key tool level at least with its edges / corners into the primary key arm tool level.

The fourth tool head 61 is also designed as a double wrench head (triangular / triangular), with a first triangular 611 in the primary, i.e. distal, key arm tool plane, and a second triangular 612 that is proximal to the first triangular 611 and smaller than it. The first triangular 611 and the second triangular 612 are arranged collinearly along the longitudinal axis of the key arm, but are oriented rotatably offset from one another at an angle of approximately 60 degrees. Furthermore, the second triangle 612 is approximately twice as deep as the first triangle 611 and smaller than the first triangle 611. Again, collinear with the first triangle 611 and the second triangle 612 along the Extending along the longitudinal axis of the key arm, a hexagon socket 613 is provided in a tertiary key arm tool level proximal to the secondary key arm tool level.

In summary, according to the invention, each tool head is designed so that it comprises at least two drive profiles (key heads), of which one drive profile is arranged in the distal primary key arm tool plane and a second drive profile is arranged in the secondary key arm tool plane located proximally thereof, the second drive profile in the secondary key arm tool plane is made smaller in each case than the drive profile in the primary key arm tool level, preferably one key size smaller. The second drive profiles / key surfaces preferably extend at least with the edges or corners into the first key arm tool plane and provide the pre-engagement surfaces according to the invention for the edge engagement there.

In addition, a third or fourth drive profile can be formed in each tool head, which is then preferably arranged in a respective tertiary key arm tool level proximal to the respective secondary key arm tool level in the key arm, and this tertiary key arm tool level is in turn made smaller than the respective second drive profile in the respective secondary key arm tool level.

It can be clearly seen that the front and the back of the key arms 3, 4, 5, 6 of the switch cabinet key are flattened and thus define a key area for an open-end wrench, so that each key arm can be used even in confined spaces and with a small switch cabinet key of e.g. 65 or 55 mm total length from a proximal key surface outer edge to the opposite proximal key surface outer edge can apply sufficient force for the rotation or closure. The outer circumferential surfaces of the key arms 3, 4, 5, 6 can naturally also have other geometrical outer surfaces to achieve the same effect, as long as this offers a sufficient force application surface for a tool wrench.

It is understandable for a person skilled in the art that the inventive concept of the axial offset of two or more drive profiles along a key arm longitudinal axis in a key arm, the proximal second drive profile at least with the edges / corners from the proximal to the distal key arm tool plane to provide the pre-engagement surfaces for the edge engagement extends, can also be implemented alone, that is to say on a tool which only comprises one such tool.

This also applies to the inventive design of the double beard with the proximal stabilizing flange and / or the beard flanks widening inward from the radially outer outer face of the beard.

However, the combination on a switch cabinet key with different key arms and different tool heads is the particularly preferred design.

A person skilled in the art understands that the inventive double bit with the stabilizing flange and / or the radially inwardly widening bit flanks is not designed in combination with other tool heads on a switch cabinet key, but can also be designed as a separate, i.e. individual tool.

This applies in the same way to the 2-plane model according to the invention with a first drive profile in a distal, primary key arm tool level and a second drive profile in a proximally provided, secondary key arm tool level, wherein the second drive profile is smaller than the first drive profile and is further rotatably offset from this. This configuration can also be designed separately from the combination with a double bit or other key arms as a single tool. The combination on a switch cabinet key with several different tool heads, however, represents the particularly preferred embodiment. In all embodiments, a third drive profile can also be provided in a tertiary key arm tool level, which in turn is smaller than the second drive profile.

The subject matter of the present invention results not only from the subject matter of the individual patent claims, but from the combination of the individual patent claims with one another. All information and features disclosed in the documents - including the summary -, in particular the spatial configuration shown in the drawings, are claimed to be essential to the invention insofar as they are new, individually or in combination, compared to the prior art.

List of reference symbols

1

Control cabinet key

2

central body

21

Internal square

22nd

Hexagon socket

3

first key arm

31

first tool head

311

cylindrical body

312, 313

beard

3121

Beard engagement surface

3122, 3123

Beard flank

3124

Outer surface of the beard

314

Stabilizing flange

315

Bit receptacle

4th

second key arm

41

second tool head

411

first square

412

second square

413

Hexagon socket

5

third bowl arm

51

third tool head

511

triangular drive profile

512

square drive profile

6th

fourth key arm

61

fourth tool head

611

first triangle

612

second triangle

613

Hexagon socket

8th

Fastening part

81

opening

Claims (12)

Switch cabinet key (1) with a central base body (2) from which several key arms (3, 4, 5, 6) protrude radially, at the radial outer ends of which tool heads are formed, with at least one tool head (31, 41, 51, 61) is designed as a socket wrench, the tool head having a first circumferentially closed drive profile for operating a fastening means, e.g. a lock, a clasp, but also a nut, a screw or the like, which is located in a primary key arm tool plane transversely to the key arm longitudinal axis of the respective key arm ( 3, 4, 5, 6), and a second drive profile (512) is formed on the tool head, which is different from the first drive profile (511), CHARACTERIZED BY THAT the second drive profile is linearly offset to the base body (2) in relation to the first drive profile is formed in a secondary key arm tool level, THAT the second drive profile also rotates is arranged to the first drive profile and THAT at least corners of the second drive profile are partially formed in the first key arm tool level to form pre-engagement surfaces. Switch cabinet key (1) according to claim 1,
CHARACTERIZED BY THAT the second drive profile is further offset axially relative to the first drive profile. Switch cabinet key (1) according to claim 1 or 2,
CHARACTERIZED BY THAT a third drive profile is formed in one of secondary key arm tool planes proximal to the base body (2) in a tertiary key arm tool plane in the associated key arm, and THAT the third drive profile is formed smaller than the second drive profile. Switch cabinet key (1) with a central base body (2) from which several key arms (3, 4, 5, 6) protrude radially, at the radial outer ends of which tool heads are formed, with at least one tool head (31) having a double bit with one running along it a key arm longitudinal axis of the key arm (3) and this enclosing cylindrical base body (311) with a cylindrical jacket surface, from which two diametrically opposite beards (312, 313) extend radially outward, each of which has a beard engagement surface (3121) arranged distally on the key arm and two beard flanks (3122, 3123) extending proximally from this beard engaging surface and an outer beard surface (3124) delimiting these beard flanks (3122, 3123) radially on the outside,
CHARACTERIZED BY THAT the double bit (312, 313) also has an inside stabilizing flange (314) which extends proximally offset parallel to the key arm tool plane of the key arm (3) and essentially transversely to the longitudinal axis of the key arm (3). Switch cabinet key (1) with a central base body (2) from which several key arms (3, 4, 5, 6) protrude radially, at the radial outer ends of which tool heads are formed, with at least one tool head (31) having a double bit with one running along it a key arm longitudinal axis of the key arm (3) and this enclosing cylindrical base body (311) with a cylindrical outer surface, from which diametrically opposite, radially from this outer surface two beards (312, 313) extend, each of which has a beard engagement surface (312, 313) arranged distally on the key arm. 3121), two beard flanks (3122, 3123) extending proximally from this beard engagement surface (3121) and an outer beard surface (3124) delimiting these beard flanks (3122, 3123) radially on the outside, CHARACTERIZED BY THAT the beard flanks (3122, 3123) from the Beard outer surface (3124) are formed widened to form a beard base on the cylindrical lateral surface. Switch cabinet key (1) according to claim 5,
CHARACTERIZED BY THAT the beard flanks (3122, 3123) are conically broadened. Switch cabinet key according to claim 6 or 7,
CHARACTERIZED BY THAT the width of the beard flanks (3122, 3123) on the lateral surface is between 8 to 12 percent, preferably 10 percent wider than on the outer beard surface (3124). Switch cabinet key (1) according to one of the preceding claims, CHARACTERIZED BY,
THAT at least one key arm (3, 4, 5, 6) has a key surface on an outside. Switch cabinet key (1) according to one of the preceding claims, CHARACTERIZED BY THAT at least two tool heads (31, 41, 51, 61) designed as socket wrenches are provided. Switch cabinet key (1) according to one of the preceding claims, CHARACTERIZED BY THAT the drive profiles have different geometries and / or sizes. Switch cabinet key according to one of the preceding claims, CHARACTERIZED BY THAT four key arms (3, 4, 5, 6) are provided which form a key cross. Switch cabinet key according to one of the preceding claims, CHARACTERIZED IN THAT the base body (2) has at least one additional tool head (31, 41, 51, 61) which is oriented approximately perpendicular to the radial key arms (3, 4, 5, 6).

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