EP3482461B1 - Electric contact device - Google Patents

Description

FIELD OF THE INVENTION

The present invention relates to an electrical contact device, a first elastic element which is contained in this electrical contact device, and an assembly which contains this electrical contact device.

TECHNICAL BACKGROUND

So-called board-to-board connectors have established themselves as a fast data transmission interface for high-frequency signals between two high-frequency components, for example two circuit boards with high-frequency electronics each. These board-to-board connectors not only have the task of establishing an electrical connection for high-frequency signals between the two high-frequency components with an adapted characteristic impedance, but also to compensate for an axial offset and an angular offset between the two high-frequency components.

The US 2012/0214357 A1 discloses a coaxial board-to-board connector which has an elastic outer and inner conductor to compensate for an axial offset and / or a radial offset between the two circuit boards. The elasticity of the outer and inner conductors is achieved by slotting.

With the board-to-board connector, which is in the TW 201 607 186 A is described, a distance between the two circuit boards deviating from the nominal distance is solved by a three-part implementation. The two circuit board connectors, which are each mechanically and electrically permanently connected to a circuit board, are bridged by an adapter connected in between, which compensates for the variable distance between the circuit boards.

The WO 2007/009549 A1 discloses a coaxial board-to-board connector which compensates for a variable distance between the two circuit boards via outer and inner conductors made of an electrically conductive elastomer.

In particular, for compensating for the axial offset between the two high-frequency components so-called coax-SLC-contact elements (English: coaxial s pring l oaded c ontact; German: coaxial resilient contact) used. For example in the US 7,416,418 B2 the structure and the mode of operation of such a coaxial SLC contact element is disclosed:
The contact on the inner conductor side is implemented as a spring contact pin, ie as a contact pin which is resiliently mounted in a socket-shaped housing. While the socket-shaped housing is typically fixed on one high-frequency component, the contact pin makes contact with the other high-frequency component with its contact tip. The contact on the outer conductor side is implemented as a contact ring which is resiliently mounted to form a slotted contact socket. The slotted contact socket is typically fixed to one high-frequency component, while the contact ring makes contact with the other high-frequency component

Due to the springing of the contact pin in the socket-shaped housing, sufficient contact pressure on the inner conductor side and thus reliable electrical contact between the contact tip of the contact pin and an associated contact surface on the other high-frequency component can be achieved within a certain range for the distance between the two high-frequency components. Equivalently, due to the springing of the contact ring, sufficient contact pressure and thus reliable electrical contact between the contact ring and an associated contact surface on the other high-frequency component can be achieved within a certain range for the distance between the two high-frequency components.

As shown in the US 7,416,418 B2 It can be seen that a Coax SLC contact element contains a comparatively high number of individual parts, which unnecessarily increases the costs for the production and logistics of such a product. In addition, the geometrical extent of such a Coax-SLC contact element is still too large to be able to meet future requirements for the distance between several Coax-SLC contact elements positioned in a grid or in a row.

This is a condition that needs to be improved.

SUMMARY OF THE INVENTION

Against this background, the present invention is based on the object of providing an electrical contact device for electromechanical contacting between two components, preferably a high-frequency contact device for electromechanical contacting between two high-frequency components to specify, which is minimized in terms of its size and the number of its individual parts.

According to the invention, this object is achieved by an electrical contact device with the features of patent claim 1 and by a first elastic element with the features of patent claim 19.

• einem Außenleiter,
• mindestens einem innerhalb des Außenleiters angeordneten Innenleiter und
• einem zwischen dem Außenleiter und dem mindestens einen Innenleiter angeordneten ersten elastischen Element,
• wobei der Außenleiter und der mindestens eine Innenleiter jeweils mit dem ersten Bauteil und mit dem zweiten Bauteil jeweils verbunden oder kontaktierbar sind,
• wobei die axiale Erstreckung des mindestens einen Innenleiters und des Außenleiters jeweils veränderbar ist,
• wobei der Außenleiter und der mindestens eine Innenleiter jeweils metallisch sind,
• wobei das erste elastische Element aus einem elektrisch isolierenden Material hergestellt ist,
• am Außenleiter fixiert ist,
• aufgrund der Elastizität des ersten elastischen Elements und der Fixierung des ersten elastischen Elements am Außenleiter in einem gestauchten Zustand des ersten elastischen Elements eine Federkraft vom ersten elastischen Element zum Außenleiter übertragbar ist und
• das elektrisch isolierende Material des ersten elastischen Elements ein Elastomer ist.

Accordingly, it is provided:
An electrical contact device for electrically connecting a first component and a second component with

• an outer conductor,
• at least one inner conductor arranged within the outer conductor and
• a first elastic element arranged between the outer conductor and the at least one inner conductor,
• wherein the outer conductor and the at least one inner conductor are each connected or contactable with the first component and with the second component,
• wherein the axial extension of the at least one inner conductor and the outer conductor can be changed,
• wherein the outer conductor and the at least one inner conductor are each metallic,
• wherein the first elastic element is made of an electrically insulating material,
• is fixed to the outer conductor,
• due to the elasticity of the first elastic element and the fixing of the first elastic element on the outer conductor in a compressed state of the first elastic element, a spring force can be transmitted from the first elastic element to the outer conductor and
• the electrically insulating material of the first elastic element is an elastomer.

• aus einem elektrisch isolierenden Material,
• das derart eingerichtet ist, dass es an einem Außenleiter einer elektrischen Kontaktvorrichtung fixierbar ist.

A first elastic element

• made of an electrically insulating material,
• which is set up in such a way that it can be fixed to an outer conductor of an electrical contact device.

The knowledge / idea on which the present invention is based consists in realizing the two technical functions of electrical insulation (isolator element) and the application of axial elasticity (spring), originally implemented in two separate components, in a single component. For this purpose, according to the invention, an elastic element, which is referred to below as the first elastic element, made of an electrically insulating material, is arranged between the at least one inner conductor and the outer conductor. Due to its arrangement between the at least one inner conductor and the outer conductor and its electrically insulating property, the first elastic element serves on the one hand as an insulator element within the high-frequency contact device.

Due to its elasticity and its fixation on the outer conductor, the elastic element can in the compressed case - if the outer conductor, which can be changed in its axial extent, is also compressed when making contact with the first and the second component - to the outer conductor a spring force with which the outer conductor in each case one exerts sufficient contact pressure on the first and second components.

In this way, according to the invention, a compact electrical contact device for high-frequency signals is created from a minimized number of individual parts, which, depending on the axial offset between the two high-frequency components to be connected, realizes reliable electrical contact between the two high-frequency components.

The outer conductor and the at least one inner conductor can each be firmly connected to the first component and / or to the second component, for example by means of a soldered connection.

Alternatively, the outer conductor and the at least one inner conductor can each only make electrical contact with the first component and / or the second component. The outer conductor and the at least one inner conductor are each pressed against associated contact surfaces on the first component and / or on the second component.

The outer conductor and the at least one inner conductor are each made of metal to realize an electrical connection for a high-frequency signal between a first component and a second component.

Advantageous refinements and developments result from the further subclaims and from the description with reference to the figures of the drawing.

It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the respectively specified combination but also in other combinations or on their own without departing from the scope of the present invention.

In a preferred embodiment, the first elastic element with its electrically insulating property is made from an elastomer, for example natural rubber, silicone, rubber, or a TPE (thermoplastic elastomer).

With regard to its function as an insulator element, the first elastic element is arranged between the at least one inner conductor and the outer conductor of the electrical contact device and is thus shaped approximately in the shape of a sleeve. In a central area between two end areas which are each adjacent to an axial end of the first elastic element, the first elastic element preferably has a reduced rigidity.

This reduced rigidity of the first elastic element in its central area has the advantageous effect that the greatest elastic deformation of the first elastic element occurs primarily in this central area and not in the two end areas.

The reduced rigidity in the central area of the first elastic element is preferably realized by a reduced outer diameter and by several slots running in the longitudinal axis direction, which are located between the outer and inner surfaces of the hollow first elastic element. Through this running in the longitudinal axis direction In the case of a pressure force acting in the longitudinal axis direction, the reduced outside diameter of the central region increases in size, while the axial longitudinal extent of the central region of the first elastic element is advantageously shortened. The reduced outside diameter in the central area can expand to the size of the non-reduced outside diameter in the end areas of the first elastic element.

An additional reduction in rigidity is achieved in that at least one recess is provided in each case on the inner and / or outer surface within the central area of the sleeve-shaped first elastic element. This at least one recess leads to an additional reduction in the cross section of the first elastic element in the region of the recess. The individual recesses are preferably arranged at points in the central region in which a deformation of the first elastic element in the radial direction occurs particularly strongly during contraction.

Due to the reduced outer diameter, the individual slots and the individual recesses in the central area of the first elastic element, the effective permittivity of the electrically insulating area in a section of the electrical contact device in which the central area of the first elastic element is located is reduced compared to a section of the electrical contact device Contact device in which the two end regions of the first elastic element are located. This increases the characteristic impedance in this section of the electrical contact device. To realize a wave resistance, which is advantageous over the entire longitudinal extension of the electrical Contact device is adapted, the outer diameter of the at least one inner conductor is increased in the middle area compared to the end areas.

In a first embodiment of an electrical contact device according to the invention, the axial variability of the outer conductor and the at least one inner conductor is preferably realized in that the at least one inner conductor is made up of a solid first inner conductor part that is connected to or can be contacted with the first component and a solid one with the second component connected or contactable second inner conductor part and the outer conductor is composed of a solid, connected to the first component or contactable first outer conductor part and a solid, connected to the second component or contactable second outer conductor part. The first and the second inner conductor part and the first and the second outer conductor part are each rigid components which each have an elasticity only in the contacting area with the inner conductor or outer conductor part to be contacted. The first and the second inner conductor part and the first and the second outer conductor part are preferably each components which each have a greater rigidity in the axial direction than in the radial direction, especially in the contacting area with the inner conductor or outer conductor part to be contacted.

The first and the second outer conductor part are in electrical contact with one another. They can be moved to one another in the axial direction and overlap in the axial direction. Depending on the degree of overlap of the first and the second outer conductor part, there is a different axial extension of the outer conductor. By increasing the degree of overlap of the first and the second outer conductor part in the event of a compression of the electrical contact device as a result of a contact pressure of the first and the second component on the electrical contact device, the effective axial extension of the outer conductor is reduced compared to the non-compression case. An outer conductor with an extension that can be changed in the axial direction is thus realized via the axial overlap of the first and second outer conductor parts.

Equivalently, the first and second inner conductor parts of each individual inner conductor are each also in electrical contact with one another. They can also be moved to one another in the axial direction and overlap in the axial direction. The overlap of the first and the second inner conductor part thus results in an inner conductor in each case with an extension that can be changed in the axial direction.

In the case of insufficient planarity of the second component, the extension of the inner conductor which can be changed in the axial direction is to be decoupled from the extension of the outer conductor which can be changed in the axial direction. For this purpose, a second elastic element is provided between the first and the second inner conductor part of the at least one inner conductor. This second elastic element realizes an elastic connection between the first and the second inner conductor part and makes it possible to compensate for an axial offset on the inner conductor side between the first and the second component.

Since the first and the second inner conductor part of the at least one inner conductor are already in electrical contact with one another, as has already been stated above, this must be the case second elastic element do not realize any additional electrical contact between the first and the second inner conductor part. Thus, the second elastic element in this first sub-variant of the first embodiment is equivalent to the first elastic element, likewise made of an electrically insulating material.

In a preferred first embodiment of this first sub-variant of the first embodiment, the first elastic element and the second elastic element are implemented as the only common elastic element.

The electrical contact between the first and the second inner conductor part is typically made via several spring tabs distributed around the circumference of the first or second inner conductor part and separated from one another by a slot of a contacting area of the first or second inner conductor part implemented as a spring sleeve. The spring tabs of the first or the second inner conductor part are each in a form-fitting or non-positive connection with a contacting area on the outer surface of the respective opposite second or first inner conductor part.

The common elastic element contains a region corresponding to the first elastic element, which is located outside the spring sleeve of the first or second inner conductor part, and a region corresponding to the second elastic element, which is located inside the spring sleeve of the first or second inner conductor part. To implement the common elastic element, the common elastic element is shaped in such a way that it passes through at least one slot to the first or second inner conductor part respectively associated spring sleeve is passed. The common elastic element thus contains, in addition to the regions corresponding to the first and second elastic elements, at least one additional connecting region which is guided through a slot and connects the first and second elastic elements to one another.

Since the at least one connection area within the common elastic element is typically of small volume compared to the two areas corresponding to the first and second elastic element, the areas of the common elastic element corresponding to the first and second elastic element are approximately decoupled from one another with regard to their elasticity .

In a second version of this first sub-variant of the first embodiment, the first and the second elastic element are each implemented as individual parts that are not connected to one another. In this case, the elasticities of the first and the second elastic element are completely decoupled from one another.

In a second sub-variant of the first embodiment, the second elastic element is made from an electrically conductive material. In this case, the second elastic element advantageously not only realizes an elastic mechanical connection, but also a further electrical contact between the first and the second inner conductor part of the respective inner conductor. Any spring element made of a metal, for example a spiral spring, can preferably be used as the second elastic element.

In a third sub-variant of the first embodiment, no second elastic element is provided between the first and the second inner conductor part of the at least one inner conductor. To achieve the elasticity of the at least one inner conductor and thus the relative elastic mobility of the first and second inner conductor parts to one another, the first elastic element is additionally fixed to the at least one inner conductor.

In a second embodiment of the electrical contact device according to the invention, the axially variable extension of the outer conductor takes place in that the outer conductor is implemented as a metallic coating on the outer surface of the first elastic element.

In this case, upon contraction, i. E. in the event of a compression of the electrical contact device as a result of a contact pressure of the first and the second component on the electrical contact device, not only the first elastic element but also the outer conductor applied as a coating to the first elastic element. The completely axial extension of the outer conductor in the case of non-compression merges into the axial and radial extension areas of the outer conductor in the event of compression. The effective axial extension of the outer conductor in the case of compression, which results from the sum of the axial extension areas, is thus reduced compared to the effective axial extension of the outer conductor in the non-compression case. In this way, an outer conductor that can be changed in its axial extension is also realized.

In this first sub-variant of the second embodiment, the at least one inner conductor settles like in the first Embodiment of the electrical contact device according to the invention in two parts each composed of a first inner conductor part connected or contactable with the first component and a second inner conductor part that can be contacted with the second component. In the first sub-variant of the second embodiment, the wave resistance of the electrical contact device is adapted over the entire longitudinal extent in that, in the event of compression, the coating of the outer conductor, which expands radially outward in the middle area, is compensated for by an enlarged outer diameter of the at least one inner conductor in the middle area.

To realize the elasticity of the at least one inner conductor, there is also a second elastic element, which is preferably designed as an electrically conductive spiral spring, between the first and the second inner conductor part of the at least one inner conductor in the first sub-variant of the second embodiment of the electrical contact device according to the invention.

In a second sub-variant of the second embodiment, analogously to the third sub-variant of the first embodiment, no second elastic element is provided between the first and the second inner conductor part of the at least one inner conductor. Instead, the first elastic element is additionally fixed to the at least one inner conductor.

In addition, in a third sub-variant of the second embodiment, the inner surface of the first elastic element is also provided with a metallic coating, which serves as the inner conductor of the electrical contact device according to the invention.

In this case, too, the axial extension of the non-compressed inner conductor changes into axially extending areas and radially extending areas when the electrical contact device is compressed. The effective axial extension of the inner conductor is reduced accordingly.

In this third sub-variant of the second embodiment, the wave resistance is adapted over the entire axial longitudinal extent of the electrical contact device according to the invention in that only in the middle area when the electrical contact device is compressed, the changed distance between the inner and outer conductor coating is achieved by a suitable arrangement and number of slots and of Recesses and is compensated by suitable dimensioning of the slot width and the slot length as well as the recess width and the recess depth.

In addition to the electrical contact device according to the invention, an assembly according to the invention which contains the electrical contact device according to the invention, the first component connected or contactable with the electrical contact device according to the invention and the second component connected or contactable with the electrical contact device according to the invention is also covered by the invention.

Finally, the invention also covers a first elastic element made of an electrically insulating material, which is set up in such a way that it can be fixed to an outer conductor of an electrical contact device.

Refinements and developments can be combined with one another as required, provided that it makes sense. Further possible configurations, developments and implementations of the invention also include combinations, not explicitly mentioned, of features of the invention described above or below with regard to the exemplary embodiments. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.

CONTENTS OF THE DRAWING

Fig. 1A

eine Querschnittsdarstellung einer ersten Ausprägung einer ersten Untervariante einer ersten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung im nicht kontaktierten Zustand,

Fig. 1B

eine erste Querschnittsdarstellung einer ersten Ausprägung einer ersten Untervariante einer ersten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung im kontaktierten Zustand,

Fig. 1C

eine zweite Querschnittsdarstellung der ersten Ausprägung der ersten Untervariante der ersten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung im kontaktierten Zustand,

Fig. 1D

eine dritte Querschnittsdarstellung der ersten Ausprägung der ersten Untervariante der ersten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung im kontaktierten Zustand,

Fig. 2A

eine Querschnittsdarstellung einer zweiten Ausprägung der ersten Untervariante einer ersten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung im nicht kontaktierten Zustand,

Fig. 2B

eine Querschnittsdarstellung einer zweiten Ausprägung der ersten Untervariante einer ersten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung im kontaktierten Zustand,

Fig. 3A

eine Querschnittsdarstellung einer zweiten Untervariante einer ersten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung im nicht kontaktierten Zustand,

Fig. 3B

eine erste Querschnittsdarstellung einer zweiten Untervariante einer ersten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung im kontaktierten Zustand,

Fig. 4A

eine Querschnittsdarstellung einer dritten Untervariante einer ersten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung im nicht kontaktierten Zustand,

Fig. 4B

eine erste Querschnittsdarstellung einer dritten Untervariante einer ersten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung im kontaktierten Zustand,

Fig. 5

eine dreidimensionale Darstellung des erfindungsgemäßen ersten elastischen Elements in der ersten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung,

Fig. 6A

eine erste Querschnittsdarstellung einer erfindungsgemäßen elektrischen Kontaktvorrichtung zur Übertragung eines differenziellen Signals,

Fig. 6B

eine zweite Querschnittsdarstellung einer erfindungsgemäßen elektrischen Kontaktvorrichtung zur Übertragung eines differenziellen Signals,

Fig. 6C

eine dritte Querschnittsdarstellung einer erfindungsgemäßen elektrischen Kontaktvorrichtung zur Übertragung eines differenziellen Signals,

Fig. 7A

eine Querschnittsdarstellung einer ersten Untervariante einer zweiten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung im nicht kontaktierten Zustand,

Fig. 7B

eine Querschnittsdarstellung einer ersten Untervariante einer zweiten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung im kontaktierten Zustand,

Fig. 8A

eine Querschnittsdarstellung einer zweiten Untervariante einer zweiten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung im nicht kontaktierten Zustand,

Fig. 8B

eine Querschnittsdarstellung einer zweiten Untervariante einer zweiten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung im kontaktierten Zustand und

Fig. 9

eine dreidimensionale Darstellung des erfindungsgemäßen ersten elastischen Elements in der zweiten Ausführungsform der erfindungsgemäßen elektrischen Kontaktvorrichtung.

The present invention is explained in more detail below with reference to the exemplary embodiments specified in the schematic figures of the drawing. It shows:

Figure 1A

a cross-sectional representation of a first expression of a first sub-variant of a first embodiment of the electrical contact device according to the invention in the non-contacted state,

Figure 1B

a first cross-sectional representation of a first expression of a first sub-variant of a first embodiment of the electrical contact device according to the invention in the contacted state,

Figure 1C

a second cross-sectional representation of the first expression of the first sub-variant of the first embodiment of the electrical contact device according to the invention in the contacted state,

Figure 1D

a third cross-sectional representation of the first expression of the first sub-variant of the first embodiment of the electrical contact device according to the invention in the contacted state,

Figure 2A

a cross-sectional representation of a second expression of the first sub-variant of a first embodiment of the electrical contact device according to the invention in the non-contacted state,

Figure 2B

a cross-sectional representation of a second expression of the first sub-variant of a first embodiment of the electrical contact device according to the invention in the contacted state,

Figure 3A

a cross-sectional view of a second sub-variant of a first embodiment of the electrical contact device according to the invention in the non-contacted state,

Figure 3B

a first cross-sectional representation of a second sub-variant of a first embodiment of the electrical contact device according to the invention in the contacted state,

Figure 4A

a cross-sectional view of a third sub-variant of a first embodiment of the electrical contact device according to the invention in the non-contacted state,

Figure 4B

a first cross-sectional view of a third sub-variant of a first embodiment of the invention electrical contact device in the contacted state,

Fig. 5

a three-dimensional representation of the first elastic element according to the invention in the first embodiment of the electrical contact device according to the invention,

Figure 6A

a first cross-sectional view of an electrical contact device according to the invention for transmitting a differential signal,

Figure 6B

a second cross-sectional view of an electrical contact device according to the invention for transmitting a differential signal,

Figure 6C

a third cross-sectional view of an electrical contact device according to the invention for transmitting a differential signal,

Figure 7A

a cross-sectional representation of a first sub-variant of a second embodiment of the electrical contact device according to the invention in the non-contacted state,

Figure 7B

a cross-sectional view of a first sub-variant of a second embodiment of the electrical contact device according to the invention in the contacted state,

Figure 8A

a cross-sectional view of a second sub-variant of a second embodiment of the invention electrical contact device in non-contacted state,

Figure 8B

a cross-sectional view of a second sub-variant of a second embodiment of the electrical contact device according to the invention in the contacted state and

Fig. 9

a three-dimensional representation of the first elastic element according to the invention in the second embodiment of the electrical contact device according to the invention.

The accompanying figures of the drawing are intended to provide a further understanding of the embodiments of the invention. They illustrate embodiments and, in conjunction with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the advantages mentioned emerge with a view to the drawings. The elements of the drawings are not necessarily shown to scale with one another.

In the figures of the drawing, identical, functionally identical and identically acting elements, features and components - unless otherwise stated - are each provided with the same reference symbols.

The figures are described in a coherent and comprehensive manner below.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

Before using the Figures 6A to 6C an electrical contact device according to the invention for transmitting a differential high-frequency signal, ie a symmetrical high-frequency signal, between two components is explained with reference to the following Figures 1A to 5B different versions of a coaxial contact device for the transmission of an asymmetrical high-frequency signal presented in detail. The first figure of each presented sub-variant or characteristic of the electrical contact device represents the operating case in which there is no electrical contact between the two components via the electrical contact device and thus the electrical contact device is not compressed. In the second figure of each presented sub-variant or variant of the electrical contact device, the operating case is shown in which electrical contact is made between the two components via the electrical contact device and the electrical contact device is thus compressed:

In the case of a transmission of an asymmetrical high-frequency signal, the electrical contact device according to the invention is designed as a coaxial contact device. For this purpose, the coaxial contact device has an outer conductor 1 and a single inner conductor 2 which is arranged coaxially to the outer conductor 1 within the outer conductor 1.

To implement an electrical contact between a first component 3, preferably a first high-frequency component, and a second component 4, preferably a second high-frequency component, in particular if one is present axial offset between the first and the second component 3 and 4, the axial extent of the metallic outer conductor 1 and the metallic inner conductor 2 of the electrical contact device according to the invention can be changed.

In a first embodiment of the electrical contact device according to the invention according to FIG Figures 1A to 6C The axial extension of the outer conductor 1 is composed of a solid first outer conductor part 1 ₁ and a massive second outer conductor part 1 ₂ , which are in electrical contact with one another on the one hand and can be moved in an axial lengthwise direction on the other. Analogously, the axial extension of the inner conductor 2 is composed of a solid first inner conductor part 2 ₁ and a solid second inner conductor part 2 ₂ , which are also in electrical contact with one another on the one hand and can be moved in an axial lengthwise direction on the other. Depending on the size of the existing axial offset, the first and second outer conductor parts 1 ₁ and 1 ₂ and the first and second inner conductor parts 2 ₁ and 2 ₂ overlap each other for different lengths. The effective axial extension of the outer conductor 1 and the inner conductor 2 results from the degree of overlap of the first and second outer conductor parts 1 ₁ and 1 ₂ or the first and second inner conductor parts 2 ₁ and 2 ₂ .

The first outer conductor part 1 ₁ and the first inner conductor part 2 _{1 of} the electrical contact device according to the invention are each electrically and mechanically connected to associated contact surfaces on the first component 3. The connection is made here using common connection techniques, for example by means of soldering. Alternatively, the first outer conductor part 1 ₁ and the first inner conductor part 2 ₁ , as in FIG Figure 4A is indicated, only be contactable with the first component 3. In this case, the first outer conductor part 1 ₁ and the first inner conductor part 2 _{1 are} in operation via an in Figure 4A The device (not shown) is brought into electrical contact with the associated contact surfaces on the first component 3 without realizing a permanent mechanical connection between the first outer conductor part 1 ₁ or the first inner conductor part 2 ₁ and the associated contact surfaces on the first component 3.

Equivalently, the second outer conductor part 1 ₂ and the second inner conductor part 2 _{2 of} the electrical contact device according to the invention can be contacted with associated contact surfaces on the second component 4 or are firmly connected to associated contact surfaces on the second component 4 using a common connection technology.

The first component 3 and the second component 4 are each preferably a high-frequency component. This high-frequency component can typically be a printed circuit board equipped with high-frequency electronics, a housing in which high-frequency electronics are installed, a substrate in which high-frequency electronics are integrated, or a single high-frequency component, for example a high frequency filter or high frequency amplifier.

To achieve a secure electrical contact between the first and second outer conductor parts 1 ₁ and 1 ₂ , either the first outer conductor part 1 ₁ or the second outer conductor part 1 ₂ is formed as a spring sleeve in its contact area with the contacting outer conductor part 1 ₂ or 1 ₁ . The contact area of the first is analogous Inner conductor part 2 ₁ or the second inner conductor part 2 ₂ with the respective contacting inner conductor part 2 ₂ or 2 ₁ also implemented as a spring sleeve in order to realize a secure electrical contact between the first and second inner conductor part 2 ₁ and 2 ₂ . In the Figures 1A, 1B and 1C For example, the second outer conductor part 1 _{2 is} shaped in its contact area as a spring sleeve which contacts the inner surface of the first outer conductor part 1 ₁ with radially outwardly directed extensions at the distal ends of its spring lugs 5. On the inner conductor side, on the other hand, the first inner conductor part 2 _{1 is} shaped in its contact area as a spring sleeve which contacts the outer surface of the second inner conductor part 2 ₂ with radially inwardly directed extensions at the distal ends of its spring lugs 6. With regard to the design of the spring tabs 6 of the spring sleeve of the first inner conductor part 2 ₁ and the contact with the outer surface of the second inner conductor part 2 ₂ , refer to the Figures 2A and 2B referenced.

To limit the axial mobility of the second outer conductor part 1 ₂ in the direction of the second component 4, the first outer conductor part 1 _{1 has} an inwardly directed web 7 ₁ at its distal end, which acts as a stopper for one provided on the outer surface of the second outer conductor part 1 ₂ and radially outwardly directed web 7 ₂ is used.

A first elastic element 8 made of an electrically insulating material is arranged coaxially to the outer conductor 1 and to the inner conductor 2. An elastomer, for example natural rubber, silicone, rubber, or a thermoplastic elastomer (TPE) is preferably suitable as an electrically insulating material with elasticity.

The first elastic element 8 is fixed on the outer conductor 1, preferably both on the first outer conductor part 1 ₁ and on the second outer conductor part 1 ₂ . Serve as a fixation, as in the Figures 1A and 1B is indicated, preferably claws 9 which are respectively formed on the inner surface of the first and second outer conductor part 1 ₁ and 1 ₂ and are hooked into associated recesses 10 at appropriate positions on the outer surface of the first elastic member. 8 Alternative fixing methods, such as gluing, are also covered by the invention. Alternatively, the first elastic element 8 can also only be fixed on the second outer conductor part 1 ₂ .

By fixing the first elastic element 8 on the outer conductor 1, preferably on the first and second outer conductor parts 1 ₁ and 1 ₂ , the first outer conductor part 1 ₁ and the second outer conductor part 1 ₂ are elastically coupled to one another. As a result of this elastic coupling, the first and the second outer conductor part 1 ₁ and 1 _{2 can be moved} elastically with respect to one another. Thus, an axial extension of the outer conductor 1 can be realized, which corresponds in contact with the second outer conductor part 1 ₂ with the second component 4 and the first outer conductor part 1 ₁ having the first component 3 to the distance between the first and second components 3 and 4. FIG.

In the case of a coaxial contact device, the first elastic element 8 is essentially shaped like a sleeve. In a central region 11 of the sleeve-shaped first elastic element 8, which extends between the two end regions 12 ₁ and 12 ₂ at the axial ends of the elastic element, there is an elasticity that is increased to elasticity in the two end regions 12 ₁ and 12 ₂ .

For this purpose, the outer diameter in the central area 11 of the first elastic element 8 is reduced compared to the outer diameter in the two end areas 12 ₁ and 12 ₂ . In addition, in the central region 11 of the first elastic element 8, as can be seen from the three-dimensional representation of the first elastic element 8 in the first embodiment of the electrical contact device according to the invention in FIG Fig. 5 is apparent, a plurality of slots 13 extending in the axial longitudinal direction of the coaxial contact device are preferably arranged in equidistant angular sections. These slots 13 extend from the outer surface to the inner surface of the sleeve-shaped first elastic element 8. The first elastic element 8 preferably contains two slots 13. Alternatively, a higher number of slots 13 can also be present in the first elastic element 8, which is part of the invention is covered.

Due to the reduced outer diameter and the slits 13 provided in the central area 11, when the first elastic element 8 contracts, the diameter of the central area 11 of the first elastic element 8 widens, while the axial length of the central area 11 of the first elastic element 8 is shortened.

An additional increase in the elasticity in the central region 11 of the first elastic element 8 is achieved by additional recesses 14 on the inner surface and / or on the outer surface of the central region 11 of the first elastic element 8.

The reduced outer diameter of the central region 11 of the first elastic element 8, the slots 13 and the additional Recesses 14 in the central region 11 of the first elastic element 8 increase the wave resistance in the section of the electrical contact device according to the invention in which the central region 11 of the first elastic element 8 is located compared to the wave resistance in the sections of the electrical contact device according to the invention in which the two are located End regions 12 ₁ and 12 _{2 of} the first elastic element 8 are located. To compensate for this change in the wave resistance, the outer diameter of the first and second inner conductor parts 2 ₁ and 2 ₂ in the section of the electrical contact device according to the invention in which the central region 11 of the first elastic element 8 is located in relation to the outer diameter of the first and second Inner conductor part 2 ₁ and 2 ₂ in the sections of the electrical contact device according to the invention, in which the two end regions 12 ₁ and 12 _{2 of} the first elastic element 8 are located, enlarged. In this way, the wave resistance of the electrical contact device according to the invention is advantageously adapted over the entire axial longitudinal extent.

Between the first and the second inner conductor part 2 ₁ and 2 _{2 there} is a second elastic one with respect to an elastic coupling of the first and the second inner conductor part 2 ₁ and 2 ₂ and thus an elastic mobility of the first and the second inner conductor part 2 ₁ and 2 ₂ Element 15 is provided. This second elastic member 15 is disposed in an internal space 16 which is located between the sleeve-shaped end of the second inner conductor part 1 ₂ and the molded as a spring sleeve end of the first inner conductor part 1. ₁

In the first sub-variant of the first embodiment of the electrical contact device according to the invention, this second elastic element 15 is produced from an electrically insulating material. It is preferably made from the same material as the first elastic element 8, namely from an elastomer.

In a first embodiment of the first sub-variant within the first embodiment of the electrical contact device according to the invention according to FIG Figures 1A, 1B , 1C and 1D the first elastic element 8 and the second elastic element 15 form a common elastic element 17. The first elastic element 8 represents a first region 17 _{1 of} the common elastic element 17 and the second elastic element 15 a second region 17 _{2 of} the common elastic element 17. The first area 17 ₁ and the second area 17 ₂ are connected to one another via a plurality of connection areas 17 ₃ within the common elastic element 17. The connection areas 17 ₃ are each passed through a slot in the contact area of the first inner conductor part 2 ₁ , which is formed as a spring sleeve.

Out Figure 1C it can be seen that the number of slots in the spring sleeve and thus the number of connecting areas 17 ₃ between the two areas 17 ₁ and 17 _{2 of} the common elastic element 17, which correspond to the first elastic element 8 and the second elastic element 15, are preferably two are. However, the invention also covers a different number of slots in the spring sleeve and thus connection areas.

As from the Figures 1A and 1B As can be seen, the axial longitudinal extension of the first elastic element 8 or of the common elastic element 17 is slightly reduced at its axial ends compared to the axial longitudinal extension of the inner conductor 2 and the outer conductor 1. This slight reduction in the axial longitudinal extension enables reliable electrical contact to be made between the first inner conductor part 2 ₁ and the first outer conductor part 1 ₁ with the first component 3 and the second inner conductor part 2 ₂ and the second outer conductor part 1 ₂ with the second component 4.

In a second embodiment of the first sub-variant of the first embodiment of the electrical contact device according to the invention according to FIG Figures 2A and 2B the first elastic element 8 and the second elastic element 15 are each implemented as individual parts. While in the first version there is still a slight coupling between the first and second elastic elements 8 and 15 due to the elastic connection of the first and second elastic elements 8 and 15 via the individual connection areas 17 _{3 of} the common elastic element 17, in the second expression, the first and the second elastic element 8 and 15 completely elastically decoupled from one another. The outer conductor 1 and the inner conductor 2 in the second embodiment thus have their own decoupled elasticity and in this way can optimally compensate for non-planarities in the first component 3 and / or in the second component 4.

Instead of a second elastic element 15 made of an elastomer, a second elastic element 15 is also possible, which as a spiral spring made of an electrically insulating Material is executed, and covered by the invention with.

From the Figures 2A and 2B it can be seen that the outer diameter of the inner conductor 2 corresponds to the inner diameter of the elastic element 8 at least in a certain area of the axial longitudinal extent - here: the enlarged outer diameter of the first inner conductor part 2 ₁ in the immediate vicinity of the central area 11 of the first elastic element 8. In this way, the inner conductor 2 is advantageously guided by the first elastic element 8 in its radial positioning within the electrical contact device according to the invention.

In a second sub-variant of the first embodiment of the electrical contact device according to the invention according to FIG Figures 3A and 3B For realizing the elasticity of the inner conductor 2, a second elastic element 15 'made of an electrically conductive material is used. In this way, an additional electrical contact between the first and the second inner conductor part 1 ₁ and 1 ₂ in addition to the spring sleeve contact is realized. The second elastic element 15 'is preferably made of a metal and implemented as a spiral spring.

In a third sub-variant of the first embodiment of the electrical contact device according to the invention according to FIG Figures 4A and 4B the second elastic element 15 is completely dispensed with. In this case, the elasticity of the inner conductor 2 is additionally realized by a further expression of the first elastic element 8 '. This expression of the first elastic element 8 ′ is fixed not only on the outer conductor 1, but also in parallel on the inner conductor 2. In analogy to the fixing of the first elastic element 8 on the outer conductor 1, the fixing of the first elastic element 8 ′ on the inner conductor 2 can preferably take place on both the first and the second inner conductor part 2 ₁ and 2 ₂ . Alternatively, the invention also covers the fixing of the first elastic element 8 ′ only on the second inner conductor part 2 ₂ .

For this purpose, the first and second inner conductor parts 2 ₁ and 2 ₂ have a plurality of claws 18 which are arranged distributed at equidistant angular intervals and which hook into associated recesses 19 of the first elastic element 8 '. Alternatively, other fixing methods, such as gluing or any other suitable form-fitting or force-fitting connection, can also be used.

In order to at least partially decouple the elasticity impressed on the outer conductor 1 and the inner conductor _{2 by} the first elastic element 8 ', recesses 20 are provided at different points in the two end regions 12 ₁ and 12 _{2 of} the first elastic element 8'. These recesses 20 are each positioned completely randomly within the first elastic element 8 'without any particular order being present. In this way, the first elastic element 8 ′ has a different elasticity in an area adjacent to the outer conductor 1 than in an area adjacent to the inner conductor 2. This ensures that the outer conductor 1 has a different elasticity than the inner conductor 2.

Since the second elastic element 15 is not required in the third sub-variant, there is also no interior space 16 between for positioning the second elastic element 15 the first and the second inner conductor part 2 ₁ and 2 ₂ required. The second inner conductor part 2 ₂ therefore no longer has to be shaped like a sleeve at its contacting end.

In a fourth sub-variant of the first embodiment, the electrical contact device according to the invention contains several inner conductors. According to the Figures 6A , 6B and 6C there are two inner conductors 2 ₁ and 2 ₂ in the electrical contact device according to the invention, which together transmit a differential high-frequency signal (so-called twinax arrangement). However, the invention is not restricted to two inner conductors. In addition, several pairs of two inner conductors each, each of which transmits a differential signal, are also covered by the invention. In the case of a star-four arrangement of the inner conductors, for example, two pairs of two inner conductors each are arranged crossed over one another.

According to the fourth sub-variant of the first embodiment, there are several inner conductors in the electrical contact device according to the invention, so that the arrangement between the outer conductor and the inner conductors, as from the cross section of FIG Figures 6B and 6C emerges, no longer has coaxiality. The first elastic element is also no longer arranged and shaped coaxially to the inner and outer conductors.

As from the Figures 6A , 6B and 6C is apparent, are within the outer conductor 1, which is composed of a first and a second outer conductor part 1 ₁ and 1 ₂ in equivalence to the previously described sub-variants and forms, the spaced-apart inner conductors 2 ₁ and 2 ₂ with their first and second inner conductor parts 2 ¹ ₁ and 2 ¹ ₂ or 2 ² ₁ and 2 ² ₂ arranged.

To achieve relative elastic mobility between the first and second outer conductor parts 1 ₁ and 1 ₂ , a first elastic element 8 ″ is arranged between the outer conductor 1 and the two inner conductors 2 ¹ and 2 ² and is preferably fixed to the outer conductor 1 by means of claws 9.

In order to be able to manufacture the first elastic element 8 ″ as a cast part from an electrically insulating material, preferably from an elastomer, the area 21 ₁ between the two inner conductors 2 ¹ and 2 ² and the two areas 21 ₂ and 21 ₃ , which are located opposite the area 21 ₁ between the outer conductor 1 and one of the two inner conductors 2 ¹ and 2 ² , not filled by the first elastic element 8 ″.

In a preferred embodiment of the fourth sub-variant of the first embodiment of the electrical contact device according to the invention, as shown in FIGS Figures 6A , 6B and 6C is shown, a second elastic element 15 ¹ and 15 ^2, likewise made of an electrically insulating material, preferably made of an elastomer, is provided in each inner conductor 2 ¹ and 2 ² . Via the second elastic element 15 ¹ and 15 ² , elasticity of the inner conductors 2 ¹ and 2 ² and thus relative elastic mobility between the associated first and second inner conductor parts 2 ¹ ₁ and 2 ¹ ₂ or 2 ² ₁ and 2 ² _{2 is} achieved .

Alternatively, analogously to the first expression of the first sub-variant of the first embodiment, there is a common elastic element from the first elastic element 8 ″ and the two second elastic elements 15 ¹ and 15 ² conceivable and covered by the invention. The implementation of the two second elastic elements from an electrically conductive material, preferably as spiral springs, analogous to the second sub-variant of the first embodiment and the implementation without second elastic elements, in which the first elastic element 8 ″ is additionally attached to the two inner conductors 2 ¹ and 2 ^{2 is} fixed, analogous to the third sub-variant of the first embodiment are also covered by the invention.

In a second embodiment of the electrical contact device according to the invention according to FIG Figures 7A to 8B the outer conductor 1 is implemented as a metallic coating 1 'on the outer surface of the first elastic element 8'''. If the electrical contact device according to the invention and thus the first elastic element 8 '''are compressed as a result of contact pressure of the first and second components 3 and 4 on the electrical contact device according to the invention, the diameter in the central area 11 of the first elastic element 8''' increases. with simultaneous axial shortening of the central region 11, as can be seen from the three-dimensional representation of the first elastic element 8 '''in the second embodiment of the electrical contact device according to the invention in FIG Fig. 9 emerges. In the compression case, the completely axial extension of the outer conductor coating 1 'in the non-compression case merges into radial extension regions and reduced axial extension regions. In this way, the effective axial extension of the outer conductor 1 'is reduced.

Since the thickness of the outer conductor coating 11 'is made comparatively small, a contact crown 22 is provided at the axial ends of the first elastic element 8' '', in particular in the area of the outer conductor coating 1 '. This contact crown 22 is firmly mechanically connected to the outer conductor coating 11 ', for example by means of soldering or press fit. Reliable electrical contact between the outer conductor coating 1 ′ and the associated contact surfaces on the first and second components 3 and 4 is thus ensured.

The inner conductor 2 is arranged within the sleeve-shaped first elastic element 8 '''. As in the first embodiment, the inner conductor 2 is composed of a first and a second inner conductor part 2 ₁ and 2 ₂ , which are in electrical contact with one another and can be moved elastically relative to one another. As from the Figures 7A and 7B can be removed, the second inner conductor part 2 _{2 is formed} in its contact area with the first inner conductor part 2 ₁ as a spring sleeve, the spring tabs of which electrically contact the outer surface of the first inner conductor part 2 ₁ .

In the first sub-variant of the second embodiment, the elasticity of the inner conductor 2 is preferably realized in analogy to the third sub-variant of the first embodiment via a second elastic element 15 'made of an electrically conductive material, preferably via a spiral spring. Alternatively, a second elastic element 15 made of an electrically insulating material, preferably made of an elastomer, according to the second form of the first sub-variant is also conceivable within the first embodiment and also covered by the invention.

In a second sub-variant of the second embodiment, the first elastic element 8 '' 'is additionally fixed to the inner conductor 2 according to the fourth sub-variant of the first embodiment, so that a technical solution without a second elastic element is also conceivable.

In a third sub-variant of the second embodiment of the electrical contact device according to the invention according to FIG Figures 8A and 8B In addition to the metallic coating 1 'on the outer surface that forms the outer conductor 1', the first elastic element 8 '''also has a metallic coating 2' on the inner surface that realizes the inner conductor 2 '.

Thus, in this third sub-variant of the second embodiment, the inner conductor 2 composed of a first and a second inner conductor part 2 ₁ and 2 ₂ can also be replaced by a metallic inner conductor coating 2 'and thus advantageously saved.

To improve the electrical contact between the metallic inner conductor coating 2 'and the associated contact surfaces on the first and second components 3 and 4, a contact crown 23 is also provided at the axial ends of the first elastic element 8' '' in the area of the metallic inner conductor coating 2 '. This contact crown 23 is also connected to the metallic inner conductor coating 2 'via a fixed mechanical connection, for example by means of soldering or press fit.

Although the present invention has been fully described above on the basis of preferred exemplary embodiments they are not limited to this, but by the claims.

List of reference symbols

1

Outer conductor

1'

Outer conductor coating

1 ₁ , 1 ₂

first and second outer conductor part

2

Inner conductor

2 '

Inner conductor coating

2 ₁ , 2 ₂

first and second inner conductor part

2 ¹ ₁ , 2 ¹ ₂ , 2 ² ₁ , 2 ² ₂

first and second inner conductor part of the differential inner conductor pair

3

first component

4th

second component

5

Spring lugs of the outer conductor

6th

Spring lugs of the inner conductor

7 ₁ , 7 ₂

Bar on the first and second outer conductor part

8, 8 ', 8' ', 8' ''

first elastic element

9

claw on the outer conductor side

10

outer conductor side recess

11

Central area of the first elastic element

12 ₁ , 12 ₂

End regions of the first elastic element

13

slot

14th

Recess in the central area of the first elastic element

15th

second elastic element

15 ¹ , 15 ²

second elastic element in the differential inner conductor pair

15 '

Spiral spring as a second elastic element

16

inner space

17th

common elastic element

17 ₁ , 17 ₂

Area of the common elastic element, which is formed as a first or second elastic element

17 ₃

Connection area of the common elastic element

18th

claw on the inner conductor side

19th

inner conductor side recess

20th

Recess in one end region of the first elastic element

21 ₁ , 21 ₂ , 21 ₃

Area not filled by the first elastic element

22nd

Contact crown for outer conductor coating

23

Contact crown for inner conductor coating

Claims (18)

1. An electrical contact device for electrically connecting a first component (3) and a second component (4) comprising an outer conductor (1; 1'; 1₁; 1₂), at least one inner conductor (2; 2'; 2₁, 2₂; 2¹, 2²; 2¹ ₁, 2¹ ₂, 2² ₁, 2² ₂) arranged within the outer conductor (1; 1'; 1₁; 1₂), and a first elastic element (8; 8'; 8"; 8''') arranged between the outer conductor (1; 1'; 1₁; 1₂) and the at least one inner conductor (2; 2'; 2₁, 2_2; 2¹, 2²; 2¹ ₁, 2¹ ₂, 2² ₁, 2² ₂), wherein the outer conductor (1; 1'; 1₁; 1₂) and the at least one inner conductor (2; 2'; 2₁, 2_2; 2¹, 2² _; 2¹ ₁, 2¹ ₂, 2² ₁, 2² ₂) in each case are connected or can be contacted with the first component (3) and with the second component (4), wherein the axial extension of the at least one inner conductor (2; 2'; 2₁, 2_2; 2¹, 2² _; 2¹ ₁, 2¹ ₂, 2² ₁, 2² ₂) and of the outer conductor (1; 1'; 1₁; 1₂) in each case can be changed, wherein the outer conductor (1; 1'; 1₁; 1₂) and the at least one inner conductor (2; 2'; 2₁, 22; 2¹, 2² _; 2¹ ₁, 2¹ ₂, 2² ₁, 2² ₂) in each case are metallic, wherein the first elastic element (8; 8'; 8"; 8''') is produced from an electrically insulating material and is fixed to the outer conductor (1; 1'; 1₁; 1₂),
   characterized in
   that due to the elasticity of the first elastic element (8; 8'; 8"; 8''') and the fixing of the first elastic element (8; 8'; 8"; 8''') to the outer conductor (1; 1'; 1₁; 1₂) in a compressed state of the first elastic element (8; 8'; 8"; 8''') a spring force can be transferred from the first elastic element (8; 8'; 8"; 8''') to the outer conductor (1; 1'; 1₁; 1₂) and that the electrically insulating material of the first elastic element (8; 8'; 8"; 8''') is an elastomer.
2. The electrical contact device according to patent claim 1,
   characterized in
   that in a central region (11) between two end regions (12₁, 12₂), which are in each case adjacent to an axial end of the first elastic element (8; 8'; 8"; 8"'), the stiffness of the first elastic element (8; 8'; 8"; 8''') is reduced compared to the stiffness of the first elastic element (8; 8'; 8"; 8''') in the two end regions (12₁, 12₂).
3. The electrical contact device according to patent claim 2,
   characterized in
   that an outer diameter in the central region (11) is designed so as to be reduced compared to an outer diameter in the end regions (12₁, 12₂).
4. The electrical contact device according to patent claim 2 or 3,
   characterized in
   that the central region (11) has a plurality of slots (13) in the axial longitudinal extension, which in each case extend from an outer surface to an inner surface of the first elastic element (8; 8'; 8"; 8"').
5. The electrical contact device according to any one of patent claims 2 to 4,
   characterized in
   that in each case at least one recess (14) is provided on an inner and/or outer surface in the central region of the first elastic element (8; 8'; 8"; 8"').
6. The electrical contact device according to any one of patent claims 2 to 5,
   characterized in
   that to achieve an adapted wave resistance over the axial longitudinal extension of the electrical contact device, an outer diameter of the at least one inner conductor (2; 2'; 2₁, 22; 2¹, 2²; 2¹ ₁, 2¹ ₂, 2² ₁, 2² ₂) is in each case enlarged in a region of the respective inner conductor (2; 2'; 2₁, 2₂; 2¹, 2²; 2¹ ₁, 2¹ ₂, 2² ₁, 2² ₂) adjacent to the central region (11) of the first elastic element (8; 8'; 8"; 8"').
7. The electrical contact device according to any one of patent claims 1 to 6,
   characterized in
   that the outer conductor (1; 1'; 1₁; 1₂) has a solid first outer conductor part (1₁), which is connected or can be contacted with the first component (3), and a solid second outer conductor part (1₂), which is connected or can be contacted with the second component (4), wherein the second outer conductor part (1₂) electrically contacts the first outer conductor part (1₁) and can be moved relative to the first outer conductor part (1₁), and the at least one inner conductor (2; 2'; 2₁, 2₂; 2¹, 2²; 2¹ ₁, 2¹ ₂, 2² ₁, 2² ₂) in each case comprises a solid first inner conductor part (2₁; 2¹ ₁, 2² ₁), which is connected or can be contacted with the first component (3), and a solid second inner conductor part (2₂; 21₂, 2² ₂), which is connected or can be contacted with the second component (4), wherein in each case the second inner conductor part (2₂; 2¹ ₂, 2² ₂) electrically contacts the first inner conductor part (2₁; 2¹ ₁, 2² ₁) and can be moved relative to the first inner conductor part (2₁; 2¹ ₁, 2² ₁), wherein the first elastic element (8; 8'; 8"; 8''') is fixed at least to the second outer conductor part (1₂).
8. The electrical contact device according to patent claim 7,
   characterized in
   that in each case a second elastic element (15; 15'; 15¹, 15²) is located between the first inner conductor part (2₁; 2¹ ₁, 2² ₁) and the second inner conductor part (2₂; 2¹ ₂, 2² ₂) of the at least one inner conductor (2; 2'; 2₁, 2_2; 2¹, 2²; 2¹ ₁, 2¹ ₂, 2² ₁, 2² ₂).
9. The electrical contact device according to claim 8,
   characterized in
   that the second elastic element (15; 15'; 15¹, 15²) is produced from an electrically insulating material.
10. The electrical contact device according to patent claim 9,
    characterized in
    that the electrically insulating material of the second elastic element (15; 15'; 15¹, 15²) is an elastomer.
11. The electrical contact device according to any one of patent claims 8 to 10,
    characterized in
    that the second elastic element (15; 15'; 15¹, 15²) and the first elastic element (8; 8'; 8"; 8''') are realized as a single common elastic element (17).
12. The electrical contact device according to patent claim 11,
    characterized in
    that the single common elastic element (17) is formed in such a manner that it is passed through at least one slot, which is made in each case between two adjacent spring tabs (6) of a contacting region of the first inner conductor part (2₁; 2¹ ₁, 2² ₁) or of the second inner conductor part (2₂; 2¹ ₂, 2² ₂) of the at least one inner conductor (2; 2'; 2₁, 2_2; 2¹, 2²; 2¹ ₁, 2¹ ₂, 2² ₁, 2² ₂), said contacting region being realized as a spring sleeve.
13. The electrical contact device according to patent claim 8,
    characterized in
    that the second elastic element (15; 15'; 15¹, 15²) is an electrically conductive spring element (15').
14. The electrical contact device according to any one of patent claims 1 to 6, characterized in
    that the outer conductor (1; 1'; 1₁; 1₂) is realized as a metallic coating (1') on an outer surface of the first elastic element (8; 8'; 8"; 8"').
15. The electrical contact device according to patent claim 7 or 14,
    characterized in
    that the first elastic element (8; 8'; 8"; 8''') is additionally fixed to the inner conductor (2; 2'; 2₁, 2₂; 2¹, 2²; 2¹ ₁, 2¹ ₂, 2² ₁, 2² ₂).
16. The electrical contact device according to patent claim 14,
    characterized in
    that the inner conductor (2; 2'; 2₁, 2_2; 2¹, 2²; 2¹ ₁, 2¹ ₂, 2² ₁, 2² ₂) is realized as a metallic coating (2') on an inner surface of the first elastic element (8; 8'; 8"; 8'"), which is formed so as to be hollow in the axial longitudinal direction.
17. An assembly with a first component (3), a second component (4) and an electrical contact device according to any one of the preceding patent claims, wherein the first component (3) and the second component (4) in each case are connected or can be contacted with the electrical contact device.
18. A first elastic element (8; 8'; 8"; 8''') consisting of an electrically insulating material, which is configured in such a manner that it can be fixed to an outer conductor (1; 1'; 1₁; 1₂) of an electrical contact device according to any one of patent claims 1 to 16.

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