WO2019063148A1

WO2019063148A1 - Electric contact device

Info

Publication number: WO2019063148A1
Application number: PCT/EP2018/067279
Authority: WO
Inventors: Christian Dandl; Benedikt Schwarz
Original assignee: Rosenberger Hochfrequenztechnik Gmbh & Co. Kg
Priority date: 2017-09-28
Filing date: 2018-06-27
Publication date: 2019-04-04
Also published as: EP3482461A1; EP3482461B1; DE102017009066A1

Abstract

The invention relates to an electric contact device for electrically connecting a first component to a second component. The electric contact device of the invention includes an outer conductor, at least one inner conductor inside the outer conductor, and a first elastic element between the outer conductor and the at least one inner conductor. The outer conductor and the at least one inner conductor are each connected to the first component and the second component or can be brought into contact therewith. The axial dimension of the at least one inner conductor and of the outer conductor can be modified. The outer conductor and the at least one inner conductor are metallic. The first elastic element is made of an electrically insulating material and is attached to the outer conductor.

Description

Electrical contact device

FIELD OF THE INVENTION The present invention relates to an electrical contact device, a first elastic element included in this electrical contact device, and an assembly including this electrical contact device.

TECHNICAL BACKGROUND

As a fast data transmission interface for high-frequency signals between two high-frequency components, for example, two printed circuit boards, each with a high-frequency electronics, so-called board-to-board connectors have established (German: PCB to PCB connectors). These board-to-board connectors not only have an electrical connection for high-frequency signals between the two

To realize high-frequency components with adapted characteristic impedance, but also to compensate for an axial offset and an angular offset between the two high-frequency components.

In particular, to compensate for the axial offset between the two high-frequency components so-called coax SLC contact elements (English: coaxial spring loaded contact, German: coaxial springing contact) is used. For example, US Pat. No. 7,416,418 B2 discloses the construction and the mode of operation of such a coaxial SLC contact element:

The inner conductor side contact is as a spring contact pin, ie as a contact pin, in a bush-shaped housing is resiliently mounted, realized. While the bushing-shaped housing is typically fixed to the one high-frequency component, the contact pin with its contact tip contacts the respective other high-frequency component. The outer conductor side contact is realized as a contact ring, which is resiliently mounted to a slotted contact socket. The slotted contact socket is typically fixed to the one high-frequency component, while the contact ring contacts the respective other high-frequency component

Due to the suspension of the contact pin in the sleeve-shaped housing, the inner conductor side has sufficient contact pressure and therefore reliable electrical contact between the contact tip of the contact pin and an associated contact surface on the respective other high-frequency component within a certain range for the distance between the two high-frequency components realizable. Equivalent on the outer conductor side by the suspension of the contact ring also a sufficient contact pressure and thus a secure electrical contact between the contact ring and an associated contact surface on the respective other high-frequency component within a certain range for the distance between the two high-frequency components feasible.

As can be seen from the illustrations in US Pat. No. 7,416,418 B2, 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 meet future requirements for the distance between a plurality of coax SLC contact elements positioned in a grid or in a row. This is a condition to be improved.

SUMMARY OF THE INVENTION Against this background, the object of the present invention is to provide an electrical contact device for electromechanical contacting between two components, preferably a high-frequency contact device for electromechanical contacting between two high-frequency components, which minimizes its size and the number of its individual parts is.

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

Accordingly, an electrical contact device for electrically connecting a first component and a second component is provided

- an outsider,

- At least one arranged within the outer conductor inner conductor and

one between the outer conductor and the at least one

Inner conductor arranged first elastic element,

- Wherein the outer conductor and the at least one inner conductor in each case connected to the first component and the second component or are contactable, - wherein the axial extent of the at least one inner conductor and the outer conductor is in each case variable,

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 and

- Is fixed on the outer conductor. A first elastic element

from an electrically insulating material,

- Is set up such that it can be fixed to an outer conductor of an electrical contact device.

The underlying idea / idea of the present invention consists in realizing the two technical functions of electrical insulation (insulator element) originally realized in two separate components and the application of an axial elasticity (spring) in a single component. For this purpose, according to the invention, between the at least one inner conductor and the outer conductor, an elastic element, which is referred to below as the first elastic element, made of an electrically insulating material. 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 in the compressed case - if the variable in its axial extent outer conductor is also compressed on contacting with the first and the second component - transmitted to the outer conductor a spring force with which the outer conductor each exerts sufficient contact pressure on the first and second component. In this way, the present invention provides a compact electrical contact device for high-frequency signals from a minimized number of individual parts, which realizes reliable electrical contact between the two high-frequency components depending on the present at each time axial offset between the two high-frequency components to be connected.

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 solder connection.

Alternatively, the outer conductor and the at least one inner conductor in each case the first component and / or the second

Contact component only electrically. In this case, 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 designed to realize an electrical connection for a high-frequency signal between a first component and a second component in each case metallic.

Advantageous embodiments and further developments will become apparent from the other subclaims and from the description with reference to the figures of the drawing. It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination indicated, but also in other combinations or in isolation, without departing from the scope of the present invention. In a preferred embodiment, the first elastic element with its electrically insulating property is made of 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 sleeve-shaped. In a middle region between two end regions, which are respectively 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 middle region advantageously has the effect that the greatest elastic deformation of the first elastic element occurs primarily in this central region and not in the two end regions.

The reduced stiffness in the center region of the first elastic element is preferably realized by a reduced outer diameter and by a plurality of slots extending in the longitudinal axis, which are located between the outer and inner surfaces of the hollow-shaped first elastic element. As a result of these slits running in the longitudinal direction of the slit, the reduced outer diameter of the central region increases in the case of a compressive force acting in the longitudinal axial direction, while the axial longitudinal extension of the central region of the first elastic element advantageously shortens. The reduced outer diameter in the middle region can extend up to the size of the unreduced outer diameter in the end regions of the first elastic element. An additional reduction of the rigidity is achieved by providing at least one recess in each case on the inner and / or outer surface of the inner surface of the sleeve-shaped first elastic element. This at least one recess leads to an additional reduction of the cross section of the first elastic element in the region of the recess. Preferably, the individual recesses are arranged at locations of the central region in which a deformation of the first elastic element in the radial direction occurs particularly strongly on contraction.

Due to the reduced outside diameter, the individual

Slots and the individual recesses in the central region of the first elastic element reduces the effective permittivity of the electrically insulating region in a section of the electrical contact device in which the middle region of the first elastic element is located opposite to a section of the electrical contact device in which the two End portions of the first elastic element are located. This increases the characteristic impedance in this section of the electrical contact device. To realize a characteristic impedance, which is advantageously adapted over the entire longitudinal extent of the electrical contact device, the outer diameter of the at least one inner conductor is increased in the middle region relative to the end regions. 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 each of a solid, connected to the first component or contactable first inner conductor part and a solid, connected to the second component or contactable second inner conductor part and the outer conductor 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 is composed. 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 region with the respective 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 each preferably components which have a higher rigidity in the axial direction than in the radial direction, in particular in the contacting region with the respective inner conductor or outer conductor part to be contacted.

The first and the second outer conductor part are in electrical contact with each other. They are movable towards each other 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 results in a different axial extent of the outer conductor. By increasing the degree of overlap of the first and the second outer conductor part in the case of a compression of the electrical contact device due to a contact pressure of the first and the second component on the electrical contact device, the effective axial extent of the outer conductor is reduced compared to the non-compression case. Thus, via the axial overlap of the first and the second outer conductor part, an outer conductor is realized with a variable in the axial direction extension.

Equivalently, the first and the second inner conductor part of each individual inner conductor also respectively face each other in an electrical contact. They are also movable in the axial direction to each other and overlap in the axial direction. Thus, the overlapping of the first and the second inner conductor part results in each case in an inner conductor with an extent that can be changed in the axial direction.

In the case of insufficient planarity of the second component, the extent of the inner conductor that can be changed in the axial direction is to be decoupled from 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 inner conductor-side axial offset 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 already stated above, the second elastic element need not realize any additional electrical contact between the first and the second inner conductor part. Thus, the second elastic member in this first sub-variant of the first embodiment equivalent to the first elastic member is also 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 realized as a single common elastic element.

The electrical contact between the first and the second inner conductor part is typically carried out over several at Um- Start of the first or the second inner conductor part distributed and each separated by a slot spring tabs of a realized as a spring sleeve contacting region of the first or the second inner conductor part. The spring tabs of the first or the second inner conductor part are in each case connected to a contacting region on the outer surface of the respectively opposite second or first inner conductor part in a positive or non-positive connection.

The common elastic member includes a portion corresponding to the first elastic member located outside the spring sleeve of the first or second inner conductor member and a second elastic member corresponding portion located within the spring sleeve of the first or second inner conductor member. To realize the common elastic element, the common elastic element is formed in such a way that it is passed through at least one slot of the respective spring sleeve belonging to the first or second inner conductor part. The common elastic element thus contains, in addition to the areas corresponding to the first and second elastic elements, at least one additional connecting area, which is guided in each case through a slot and connects the first and second elastic elements to one another.

Since the at least one connection region within the common elastic element is designed to be small-volume relative to the two regions respectively corresponding to the first and second elastic elements, the regions of the common elastic element respectively corresponding to the first and second elastic elements are approximately in front of each other with respect to their respective Elasticity decoupled. In a second embodiment of this first variant of the first embodiment, the first and the second elastic element are each realized as non-interconnected items. In this case, the elasticities of the first and second elastic members are completely decoupled from each other.

In a second sub-variant of the first embodiment, the second elastic element is made of an electrically conductive material. In this case, the second elastic element advantageously implements not only an elastic mechanical connection, but also a further electrical contact between the first and the second inner conductor part of the respective inner conductor. As a second elastic element may in this case preferably each spring element made of a metal, for example a coil spring, use find.

In a third sub-variant of the first embodiment, in each case no second elastic element is provided between the first and the second inner conductor part of the at least one inner conductor. To realize the elasticity of the at least one inner conductor and thus the relative elastic mobility of the first and the second inner conductor part 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 realized as a metallic coating on the outer surface of the first elastic element.

In this case, deforms in a contraction, ie, a compression, the electrical contact device due to a contact pressure of the first and the second component the electrical contact device not only the first elastic element, but also the applied as a coating on the first elastic element outer conductor. The completely axial extension of the outer conductor in the case of non-compression changes into axial and radial extension regions of the outer conductor in the event of compression. The effective axial extent of the outer conductor in the compression case, which results from the sum of the axial extension ranges, is thus reduced compared to the effective axial extension of the outer conductor in the non-compression case. In this way, a variable in its axial extent outer conductor is also realized.

The at least one inner conductor is in this first sub-variant of the second embodiment, as in the first embodiment of the electrical contact device according to the invention in two parts from a first component connected to the first component or contactable inner conductor part and a contactable with the second component second inner conductor part together. In the first sub-variant of the second embodiment, the characteristic impedance of the electrical contact device is adapted over the entire longitudinal extent such that in the case of compression the outer conductor extending radially outwards in the middle region is compensated by an outer diameter of the at least one inner conductor which is enlarged in the central region.

To realize the elasticity of the at least one inner conductor, a second elastic element, which is preferably embodied as an electrically conductive spiral spring, is also located 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 in each case 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, the inner surface of the first elastic element in a third sub-variant of the second embodiment is also provided with a metallic coating which serves as the inner conductor of the electrical contact device according to the invention.

Also in this case, the axial extension of the non-compressed inner conductor goes over in a compression of the electrical contact device in axially extending portions and radially extending portions. The effective axial extension of the inner conductor is reduced accordingly.

In this third sub-variant of the second embodiment, the characteristic impedance is adapted over the entire axial longitudinal extension of the electrical contact device according to the invention by the fact that only in the middle region

Compression of the electrical contact device of the changed distance between the inner and outer conductor coating is compensated by a suitable arrangement and number of slots and recesses and by a suitable dimensioning of the slot width and the slot length and 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 is the electrical contact device according to the invention, which is compatible with the invention. According to the invention electrical contact device connected or contactable first component and contains the connected or contactable with the inventive electrical contact device second component, covered by the invention with.

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

Embodiments and developments can, if appropriate, combine with one another as desired. Further possible refinements, 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.

CONTENT OF THE DRAWING

The present invention will be explained in more detail with reference to the execution examples given in the schematic figures of the drawing. It shows:

1A is a cross-sectional view of a first embodiment of a first sub-variant of a first embodiment of the electrical according to the invention

Contact device in the non-contacted state,

Fig. 1B is a first cross-sectional view 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,

1C shows a second cross-sectional view of the first embodiment of the first sub-variant of the first embodiment of the electrical contact device according to the invention in the contacted state,

1D is a third cross-sectional view of the first embodiment of the first sub-variant of the first embodiment of the electrical contact device according to the invention in the contacted state,

2A is a cross-sectional view of a second embodiment of the first sub-variant of a first embodiment of the electrical contact device according to the invention in the non-contacted state,

2B is a cross-sectional view of a second embodiment of the first sub-variant of a first embodiment of the electrical contact device according to the invention in the contacted state,

3A shows a cross-sectional view of a second subvariant of a first embodiment of the electrical contact device according to the invention in the non-contacted state,

3B is a first cross-sectional view of a second

Sub-variant of a first embodiment of the electrical contact device according to the invention in the contacted state,

4A is a cross-sectional view of a third sub-variant of a first embodiment of the invention proper electrical contact device in the non-contacted state,

4B is a first cross-sectional view of a third

5 is a three-dimensional representation of the inventive first elastic element in the first

Embodiment of the electrical contact device according to the invention,

6A is a first cross-sectional view of an inventive electrical contact device for

Transmission of a differential signal,

6B is a second cross-sectional view of an electrical contact device according to the invention for transmitting a differential signal,

6C is a third cross-sectional view of an electrical contact device according to the invention for transmitting a differential signal,

7A is a cross-sectional view of a first sub-variant of a second embodiment of the electrical contact device according to the invention in the non-contacted state,

7B is 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, 8A is a cross-sectional view of a second sub-variant of a second embodiment of the inventive electrical contact device in the non-contacted state, Fig. 8B is 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 is a three-dimensional representation of the first invention elastic element in the second embodiment of the electrical contact device according to the invention.

The accompanying figures of the drawing are intended to convey a further understanding of the embodiments of the invention. They illustrate embodiments and, together with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the stated advantages will become apparent with reference to the drawings. The elements of the drawings are not necessarily shown to scale to each other. In the figures of the drawing are the same, functionally identical and same-acting elements, features and components - unless otherwise stated - each provided with the same reference numerals. In the following the figures are described coherently and comprehensively. DESCRIPTION OF EXEMPLARY EMBODIMENTS

Before referring to FIGS. 6A to 6C, an electrical contact device according to the invention for transmitting a differential high-frequency signal, i. a symmetrical high-frequency signal is explained between two components, with reference to the following figures 1A to 5B respectively different forms of a coaxial contact device for transmitting an asymmetric high-frequency signal are presented in detail. Here, the first figure of each presented sub-variant or expression of the electrical contact device in each case represents the operating case in which no electrical contact between the two components via the electrical contact device follows and thus the electrical contact device is not compressed. In the second figure of each presented sub-variant or expression of the electrical contact device in each case the operating case is shown, in which an electrical contact between the two components via the electrical contact device takes place and thus the electrical contact device is 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. The coaxial contact device has for this purpose an outer conductor 1 and a single inner conductor 2, which is arranged coaxially to the outer conductor 1 within the outer conductor 1. For realizing 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 in the presence of an axial offset between the first and the second component 3 and 4 the axial extent of the metallic outer ßenleiters 1 and the metallic inner conductor 2 of the electrical contact device according to the invention changeable.

In a first embodiment of the electrical contact device of the invention according to the Figures 1A to 6C, the variable in its axial extent outer conductor 1 of a solid first outer conductor part 1 ₁ and a solid second outer conductor portion 1 ₂ is composed, which are on the one hand to each other in an electrical contact and on the other hand, in axial longitudinal extent to each other are movable. Analogously, the variable in its axial extent inner conductor 2 of a solid first inner conductor part 2 ₁ and a solid second inner conductor part 2 ₂ together, which are also on the one hand to each other in an electrical contact and on the other hand in axial

Longitudinal extent to each other are movable. Depending on the size of the present axial offset, the first and the second outer conductor part 1 ₁ and 1 ₂ overlap and the first and the second inner conductor part 2 ₁ and 2 ₂ overlap for a long time. The effective axial extension of the outer conductor 1 and the inner conductor 2 results from the degree of overlap of the first and the second outer conductor part 1 ₁ and 1 ₂ and the first and the second inner conductor part 2 ₁ and 2 _second 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 electrically and mechanically connected to respective contact surfaces on the first component 3. The connection is made using common joining techniques, for example by means of soldering. Alternatively, the first outer conductor part 1 ₁ and the first inner conductor part 2 ₁ , as indicated in FIG. 4A, can only be contacted with the first component 3. In this case, the first outer conductor part 1 ₁ and the first inner conductor part 2 ₁ in the operating case via a device not shown in Fig. 4A with the added impaired contact surfaces on the first component 3 brought into electrical contact without a permanent mechanical connection between the first outer conductor part 1 ₁ and the first inner conductor part 2 ₁ and the associated Kontaktflä- chen on the first component 3 to realize.

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 with corresponding contact surfaces on the second component 4 contactable or firmly connected by means of a common connection technology with associated contact surfaces on the second component 4.

The first component 3 and the second component 4 are preferably each a high-frequency component. This high-frequency component may typically comprise 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 a high-frequency amplifier, his.

To realize a secure electrical contact between see the first and the second outer conductor part 1 ₁ and 1 ₂ is either the first outer conductor part 1 ₁ or the second outer conductor part 1 ₂ each in its contact region with the respective outer conductor contacting part 1 ₂ and 1 ₁ as a spring sleeve formed. Analogously, the contact region of the first inner conductor part 2 ₁ or the second inner conductor part 2 ₂ with the respectively contacting inner conductor part 2 ₂ and 2 _{1 is} also realized as a spring sleeve to realize a secure electrical contact between the first and the second inner conductor part 2 ₁ and 2 ₂ , In the figures 1A, 1B and IC, for example, the second outer conductor part 1 ₂ in his Contact area formed as a spring sleeve, which contacts the inner surface of the first outer conductor part 1 ₁ with radially outward extensions at the distal ends of their spring tabs 5. Inner conductor side, however, the first inner conductor part 2 _{1 is formed} 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 their spring tabs 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 contacting with the outer surface of the second inner conductor part 2 ₂ reference is made to Figures 2A and 2B.

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 at its distal end an inwardly directed web Ίχ, which provided as a stopper for a on the outer surface of the second outer conductor part 1 ₂ and radially outwardly directed web 7 ₂ is used.

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

The first elastic element 8 is fixed to the outer conductor 1, preferably both on the first outer conductor part 1 ₁ and on the second outer conductor part 1 ₂ . As fixing serve, as indicated in Figures 1A and 1B, 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 in associated recesses 10, at appropriate positions on the outer surface of the first elastic Elements 8 are hacked. alternatives Effective fixation methods, such as bonding, are covered by the invention. Alternatively, the first elastic element 8 can also be fixed only to the second outer conductor part 1 ₂ .

By fixing the first elastic element 8 on the outer conductor 1, preferably on the first and on the second outer conductor part 1 ₁ and 1 ₂ , the first outer conductor part 1 ₁ and the second outer conductor part 1 ₂ are elastically coupled to each other. By this elastic coupling, the first and the second outer conductor part 1 ₁ and 1 ₂ to each other are elastically movable. Thus, an axial extension of the outer conductor 1 can be realized, which corresponds to contacting the second outer conductor part 1 ₂ with the second component 4 and the first outer conductor part 1 ₁ with the first component 3 to the distance between the first and second component 3 and 4.

The first elastic element 8 is formed substantially sleeve-shaped in the case of a coaxial contact device. 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, which is increased to the elasticity in the two end regions 12 ₁ and 12 ₂ ,

For this purpose, the outer diameter is reduced in the middle region 11 of the first elastic element 8 with respect to the outer diameter in the two end regions 12 ₁ and 12 ₂ . In addition, in the central region 11 of the first elastic element 8, as shown in 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. 5, a plurality of extending in the axial longitudinal direction of the coaxial contact device slots 13 are preferably arranged in equidistant angle sections , These slots 13 extend from the outer surface to the inner surface of the sleeve-shaped first elastic element 8. Preferably, the first elastic element 8 contains two slots 13. Alternatively, a higher number of slots 13 may be present in the first elastic element 8, which is covered by the invention ,

Due to the reduced outer diameter and through the slots 13 provided in the central region 11 widens in a contraction of the first elastic member 8 of the

Diameter of the central portion 11 of the first elastic member 8, while shortening the axial longitudinal extent of the central portion 11 of the first elastic member 8.

An additional increase in the elasticity in the center 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 characteristic impedance 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, compared to the characteristic impedance in the sections of the electrical contact device according to the invention, in which the two end portions 12 ₁ and 12 _{2 of} the first elastic member 8 are located. To compensate for this change in the characteristic impedance, the outer diameter of the first and the second inner conductor part 2 ₁ and 2 ₂ in the portion of the electrical contact device according to the invention, in which the center region 11 of first elastic element 8 is 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 portions 12 ₁ and 12 _{2 of} the first elastic member 8 are increased. In this way, the characteristic impedance of the electrical contact device according to the invention over the entire axial longitudinal extent is advantageously adapted.

Between the first and the second inner conductor part 2 ₁ and 2 ₂ 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 to each other a second elastic Element 15 is provided. This second elastic member 15 is disposed in an inner space 16, the sleeve-1 and ₂ is located between the gene end of the second inner conductor part as the molded spring sleeve end of the first inner conductor part 1. ₁

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

In a first embodiment of the first variant in the first embodiment of the electrical contact device according to the invention according to FIGS. 1A, 1B, 1C and 1D, the first elastic element 8 and the second elastic element 15 form a common elastic element 17. Here, the first elastic element 8 constitutes a first region 17 _{1 of} the common elastic element 17 and the second elastic element 15 a second region 172 of the common elastic element 17. The first region 17i and the second region 172 are connected to one another via a plurality of connection regions 173 within the common elastic element 17. The connecting regions 173 are each guided through a slot of the contact region of the first inner conductor part 2 ₁ formed as a spring sleeve.

From Fig. IC it is apparent that the number of slots of the spring sleeve and thus the number of connecting portions 173 between the two regions 17i and 172 of the common elastic member 17 corresponding to the first elastic member 8 and the second elastic member 15, preferably two are. However, the invention also covers a different number of slots of the spring sleeve and thus of connecting areas.

As can be seen from Figures 1A and 1B, the axial longitudinal extent of the first elastic member 8 and the common elastic member 17 is slightly reduced at their axial ends against the axial longitudinal extent of the inner conductor 2 and the outer conductor 1. This slight reduction of the axial longitudinal extent enables secure electrical contacting of 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 respectively 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 FIGS. 2A and 2B, the first elastic element 8 and the second elastic element 15 are each realized as individual parts. While at the first expression due to the elastic connection of the first and second elastic members 8 and 15 via the individual connecting portions 173 of the common elastic member 17 is still a slight coupling between the first and the second elastic member 8 and 15 is present, in the second embodiment, the first and the second elastic member 8 and 15th completely decoupled from each other elastically. The outer conductor 1 and the inner conductor 2 thus have their own decoupled elasticity in the second embodiment and can optimally compensate for non-planarity in the first component 3 and / or in the second component 4 in this way.

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

It can be seen in each case from FIGS. 2A and 2B that the outer diameter of the inner conductor 2, at least in a specific region of the axial longitudinal extension - here: the enlarged outer diameter of the first inner conductor part 2 ₁ in the immediate vicinity of the central region 11 of the first elastic element 8 - the inner diameter of the elastic element 8 corresponds. 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 FIGS. 3A and 3B, a second elastic element 15 'made of an electrically conductive material is used to realize the elasticity of the inner conductor 2. In this way, in addition to the spring sleeve contact an additional electrical contact between the first and the second inner conductor part 1 ₁ and 1 ₂ realized. Preferably, the second elastic element 15 'is made of a metal and realized as a spiral spring.

In a third sub-variant of the first embodiment of the electrical contact device according to the invention according to FIGS. 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 not only fixed to the outer conductor 1, but also parallel to the inner conductor 2. By analogy with the fixation of the first elastic element 8 on the outer conductor 1, the fixation 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, however, the fixing of the first elastic element 8 'on the second inner conductor part 2 _{2 is also} covered by the invention.

For this purpose, the first and second inner conductor part 2 ₁ and 2 ₂ has a plurality of claws 18, which are distributed at equidistant angular intervals and which hook into corresponding recesses 19 of the first elastic element 8 '. Alternatively, other fixation methods, such as gluing or any other suitable positive or non-positive connection can be used. To at least partially decouple the elasticity respectively impressed from the first elastic element 8 'on the outer conductor 1 and the inner conductor 2, recesses 20 are provided at different locations in the two end regions 12 ₁ and 12 _{2 of} the first elastic element 8'. These recesses 20 are completely random positioned without the presence of a particular order within the first elastic element 8 '. In this way, the first elastic element 8 'has a different elasticity in a region 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 to the inner conductor 2.

Since the second elastic element 15 is not needed in the third sub-variant, no interior space 16 between the first and the second inner conductor part 2 ₁ and 2 _{2 is} required for positioning the second elastic element 15. The second inner conductor part 2 ₂ must therefore no longer be sleeve-shaped at its contacting end.

In a fourth sub-variant of the first embodiment, the electrical contact device according to the invention contains a plurality of inner conductors. According to FIGS. 6A, 6B and 6C, two internal conductors 2 ¹ and 2 ² are present in the electrical contact device according to the invention, which together transmit a differential high-frequency signal (so-called twinax arrangement). The invention is not limited to two inner conductors. In addition, several pairs of two inner conductors each, which each transmit a differential signal, are also covered by the invention. At a

Star quad arrangement of the inner conductor, for example, two pairs of two inner conductors are each crossed over to each other.

According to the fourth sub-variant of the first embodiment, there are a plurality of inner conductors in the electrical contact device according to the invention, so that the arrangement between the outer conductor and the inner conductors, as is apparent from the cross section of Figures 6B and 6C, no coaxiality has more. Also, the first elastic element is no longer coaxial with the inner and outer conductors arranged and shaped. As can be seen from FIGS. 6A, 6B and 6C, within the outer conductor 1, which is made up of a first and a second outer conductor part I ₁ and I ₂ in equivalence to the previously described variants and variants, the spaced-apart inner conductors 2 ¹ and 2 are ² with their first and second inner conductor parts 2 ¹ 1 and 2h or 2 ² 1 and 2 ² 2 arranged.

To realize a relative elastic mobility between the first and the 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 fixed on the outer conductor 1 preferably by means of claws 9.

To the first elastic element 8 '' as a casting of an electrically insulating material, preferably from a

Elastomer to be able to manufacture, the area 21i between the two inner conductors 2 ¹ and 2 ² and the two areas 21 ₂ and 21 ₃ , each of the area 21i opposite between the outer conductor 1 and one of the two inner conductors 2 ¹ and 2 ^second are not filled by the first elastic element 8 ^'' .

In a preferred embodiment of the fourth sub-variant of the first embodiment of the inventive electrical contact device, as shown in Figures 6A, 6B and 6C, in each inner conductor 2 ¹ and 2 ² each have a second elastic element 15 ¹ and 15 ² also made of an electrically insulating material, preferably of an elastomer. Via the second elastic element 15 ¹ and 15 ² , an elasticity of the inner conductors 2 ¹ and 2 ² and thus a 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 realized. Alternatively, similar to the first embodiment of the first sub-variant of the first embodiment, a common elastic element of the first elastic element 8 '' and the two second elastic elements 15 ¹ and 15 ² conceivable and covered by the invention. Also, the realization of the two second elastic elements of an electrically conductive material, preferably as coil springs, analogous to the second sub-variant of the first embodiment and the realization without second elastic elements, in which the first elastic element 8 '' in addition to the two inner conductors 2 ¹ and 2 ^{2 is} fixed, analogous to the third sub-variant of the first embodiment are covered by the invention.

In a second embodiment of the electrical contact device according to the invention according to FIGS. 7A to 8B, the outer conductor 1 is realized 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 '''compressed as a result of contact pressure of the first and the second component 3 and 4 on the inventive electrical contact device, the diameter increases in the central region 11 of the first elastic element 8''' 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. 9. In the compression case, the extension of the outer conductor coating 1 ', which is completely axial in the non-compression case, goes into radial extension regions and redu- graced axial extent ranges over. In this way, the effective axial extent of the outer conductor 1 'is reduced. Since the thickness of the outer conductor coating 11 'is made comparatively small, in each case a contact crown 22 is provided at the axial ends of the first elastic element 8'", in particular in the region 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 interference fit. Thus, a secure electrical contact between the outer conductor coating 1 'and the associated contact surfaces on the first and second components 3 and 4 is ensured.

Within the sleeve-shaped first elastic element 8 ''', the inner conductor 2 is arranged. The inner conductor 2 is composed as in the first embodiment of a first and a second inner conductor part 2 ₁ and 2 ₂ , which are in electrical contact with each other and are elastically movable relative to each other. As can be seen from Figures 7A and 7B, in this case, the second inner conductor part 2z formed in its contact region with the first inner conductor part 2 ₁ as a spring sleeve whose Federla see the outer surface of the first inner conductor part 2 ₁ electrically contact.

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

In a second sub-variant of the second embodiment, the first elastic element 8 '' '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 conceivable. In a third sub-variant of the second embodiment of the electrical contact device according to the invention according to FIGS. 8A and 8B, the first elastic element 8 '' 'also has a metallic coating 2 in addition to the metallic coating \' on the outer surface forming the outer conductor 1 ' 'on the inner surface, which 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 i can be replaced by a metallic inner conductor coating 2 'and thus advantageously saved.

In order 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 likewise provided at the axial ends of the first elastic element 8' "in the region of the metallic inner conductor coating 2 ' intended. This contact core 23 is likewise connected to the metallic inner conductor coating 2 'via a fixed mechanical connection, for example by means of soldering or interference fit.

Although the present invention has been fully described by means of preferred embodiments, supra they are not limited to that, but modifiable in a variety of ways.

LIST OF REFERENCE NUMBERS

1 outer conductor

1 'conductor coating

1 ₁ , 1 ₂ first and second outer conductor part

2 inner conductors

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 dif ferentiellen inner conductor pair

3 first component

4 second component

5 spring tabs of the line ladder

6 spring tabs of the inner conductor

7 ₁ , 72 bar on the first and second outer conductor part

8, 8 ", 8", 8 "'first elastic element

9 conductor-sided claw

10 outer conductor side recess

11 middle region of the first elastic element

12 ₁ , 12 ₂ end portions of the first elastic element

13 slot

14 recess in the middle region of the first elastic element

15 second elastic element

15 ¹ , 15 ² second elastic element in the differential inner conductor pair

15 'coil spring as a second elastic element 16 interior

17 common elastic element

17 ₁ , 17 ₂ region of the common elastic element, which is formed as a first and second elastic element 17 ₃ Connection area of the common elastic element

18 inner conductor-side claw

19 inner conductor-side recess

20 recess in an end region of the first elastic element

21 ₁ , 21 ₂ , 21 ₃ area not filled by the first elastic element

22 Contact crown for outer conductor coating 23 Contact crown for inner conductor coating

Claims

1. An electrical contact device for electrically connecting a first component (3) and a second component (4) to an outer conductor (1; 1 '; 1 ₁ , 1 ₂ ), at least one inside the outer conductor (1; 1'; ₁ , 1 ₂ ) arranged inside conductor (2, 2 ', 2 ₁ , 2 ₂ , 2 ¹ , 2 ² , 2 ¹ !, 2 ¹ ₂ , 2 ² i, 2 ² ₂ ), and one between the outer conductor (1; 1 ', 1 ₁ , 1 ₂ ) and the at least one inner conductor (2, 2', 2 ₁ , 2 ₂ , 2 ¹ , 2 ² , 2 ¹ !, 2 ¹ ₂ , 2 ² i, 2 ² ₂ ) arranged first elastic element (8; 8 ';8'';8'''), wherein the outer conductor (1; 1 '; 1 ₁ , 1 ₂ ) and the at least one inner conductor (2; 2'; 2 ₁ , 2 ₂ ; 2 ^1, 2 ^2; 2 ¹ 1 2 ¹ ₂ 2 ² 1 2 ² ₂₎ respectively connected to the first component (3) and with the second component (4) or are contactable with the axial Erstre- ckung of at least one inner conductor (2, 2 ', 2 ₁ , 2 ₂ , 2 ¹ , 2 ² , 2 ¹ 1, 2 ¹ ₂ , 2 ² 1, 2 ² ₂ ) and the outer conductor (1, 1', 1 ₁ , 1 ₂ ) is variable in each case, wherein the outer conductor (1 1 ', 1 ₁ , 1 ₂ ) and the at least one inner conductor (2; 2 '; 2 ₁ , 2 ₂ ; 2 ¹ , 2 ² ; 2 ¹ 1, 2 ¹ ₂ , 2 ² 1, 2 ² ₂ ) are each metallic, wherein the first elastic element (8, 8 ', 8'',8''') is made of an electrically insulating material and on the outer conductor (1, 1 ', 1 ₁ , 1 ₂ ) is fixed.

2. Electrical contact device according to claim 1, characterized in that

in that the electrically insulating material of the first elastic element (8; 8 '; 8' '; 8' '') is an elastomer.

3. Electrical contact device according to claim 1 or 2,

characterized,

that in a central region (11) between two end regions (12 ₁ , 12 ₂ ) which are respectively adjacent to an axial end of the first elastic element (8; 8 ';8'';8''') Rigidity of the first elastic member 8; 8th';8th'';

8 '' ') is reduced.

4. Electrical contact device according to claim 3, characterized in that

an outer diameter in the center region (11) is designed to be reduced in relation to an outer diameter in the end regions (12 ₁ , 12 ₂ ).

5. Electrical contact device according to claim 3 or 4,

characterized,

in that the central region (11) has a plurality of slots (13) in the axial longitudinal extent, each extending from an outer surface to an inner surface of the first elastic element (8; 8 '; 8' '; 8' '').

6. Electrical contact device according to one of the claims 3 to 5,

characterized,

in that in each case at least one recess (14) is provided on an inner and / or outer surface in the middle region of the first elastic element (8; 8 '; 8' '; 8' '').

7. Electrical contact device according to one of the claims 3 to 6,

characterized,

in order to achieve an adapted characteristic impedance over the axial longitudinal extent of the electrical contact device, an outer diameter of the at least one inner conductor (2, 2 ', 2 ₁ , 2 ₂ , 2 ¹ , 2 ² , 2 ¹ 1, 2 ¹ ₂ , 2 ² 1 , 2 ² ₂ ) each in a region of the respective inner conductor (2; 2 '; 2 ₁ , 2 ₂ ; 2) adjacent to the central region (11) of the first elastic element (8; 8'; 8 ''; 8 ''') ¹ , 2 ² , 2 ¹ 1, 2 ¹ ₂ , 2 ² 1, 2 ² ₂ ) is magnified.

8. Electrical contact device according to one of the claims 1 to 7,

characterized,

in that the outer conductor (1; 1 '; 1 ₁ , 1 ₂ ) is a solid first outer conductor part (1 ₁ ) connected or contactable with the first component (3) and a solid second outer conductor part connected or contactable with the second component (4) comprising (1 _2), wherein the second outer conductor part (1 _2), the first outer conductor part (1 ₁₎ is electrically contacted by and relative to the first outer conductor part (1 ₁₎ is movable, and the at least one inner conductor (2; 2 '; 2 _1, 2 ₂ , 2 ¹ , 2 ² , 2 ¹ 1, 2 ¹ ₂ , 2 ² 1, 2 ² ₂ ) each have a solid, with the first component (3) connected or contactable first inner conductor part (2 ₁ , 2 ¹ 1, 2 ² 1) and a solid, with the second component (4) connected or contactable second inner conductor part (2 ₂ ; 2 ¹ ₂ , 2 ² ₂ ), wherein in each case the second inner conductor part (2 ₂ ; 2 ¹ _2r 2 ² ₂ ) the first Inner conductor part (2 ₁ , 2 ¹ 1, 2 ² 1)

is electrically contacted and is movable relative to the first inner conductor part (2 ₁ , 2 ¹ 1, 2 ² 1), wherein the first elastic element (8, 8 ', 8 ", 8"') at least on the second outer conductor part (1 ₂ ) is fixed.

9. Electrical contact device according to claim 8, characterized in that

in that between the first inner conductor part (2ι; 2 ¹ 1, 2 ² 1) and the second inner conductor part (2 ₂ ; 2 ¹ ₂ , 2 ² ₂ ) of the at least one inner conductor (2; 2 '; 2 ₁ , 2 ₂ ; ¹ , 2 ² , 2 ¹ !, 2 ¹ ₂ , 2 ² 1, 2 ² ₂ ) each have a second elastic element (15, 15 ', 15 ¹ , 15 ² ).

10. Electrical contact device according to claim 9, characterized in that

in that the second elastic element (15; 15 '; 15 ¹ , 15 ² ) is made of an electrically insulating material.

11. Electrical contact device according to claim 10, characterized in that

in that the electrically insulating material of the second elastic element (15, 15 ', 15 ¹ , 15 ² ) is an elastomer.

12. Electrical contact device according to one of the claims 9 to 11,

characterized,

in that the second elastic element (15; 15 '; 15 ¹ , 15 ² ) and the first elastic element (8; 8'; 8 ''; 8 ''') are realized as a single common elastic element (17).

13. Electrical contact device according to claim 12, characterized in that

in that the single common elastic element (17) is shaped in such a way that it is passed through at least one slot, which is located between two adjacent spring tabs (6) of a contacting area of the first inner conductor part (2 ₁ ; 2 ¹ 1,

2 ² 1) or the second inner conductor part (2 ₂ , 2 ¹ ₂ , 2 ² ₂ ) of the at least one inner conductor (2, 2 ', 21, 2 ₂ , 2 ¹ , 2 ² , 2 ¹ 1, 2 ¹ ₂ , 2 ² 1, 2 ² ₂ ) is executed.

14. Electrical contact device according to claim 9, characterized in that

in that the second elastic element (15; 15 '; 15 ¹ , 15 ² ) is an electrically conductive spring element (15').

15. Electrical contact device according to one of the claims 1 to 7,

characterized,

that the outer conductor (1; 1 '; (1 _1, 1 ₂₎ 1) coating as a metallic loading' on an outer surface of the first elastic see element (8; 8 ';8'';8''') is realized is.

16. Electrical contact device according to claim 8 or 15,

characterized,

in that the first elastic element (8; 8 ';8'';8''') is additionally connected to the inner conductor (2; 2 '; 2 ₁ , 2 ₂ ; 2 ¹ , 2 ² ; 2 ¹ 1, 2 ¹ ₂ , 2 ² 1, 2 ² ₂ ) is fixed.

17. Electrical contact device according to claim 15, characterized in that

in that the inner conductor (2; 2 '; 2 ₁ , 2 ₂ ; 2 ¹ , 2 ² ; 2 ¹ 1, 2 ¹ 2, 2 ² 1, 2 ² ₂ ) as a metallic coating (2') on an inner surface of the in axial longitudinal direction hollow shaped first elastic element (8; 8 ', 8'',8''') is realized.

18 assembly with a first component (3), a second component (4) and an electrical contact device according to one of the preceding claims, wherein the first component (3) and the second component (4) are each connected to the electrical contact device or contacted ,

19. First elastic element (8, 8 ', 8'',8''') made of an electrically insulating material, which is set up in such a way that it is connected to an outer conductor (1, 1 ', ₁₁ , ₁₂ ) of an electrical conductor Contact device according to one of the claims 1 to 17 can be fixed.