EP2715863A1 - Swivel coupling for the non-contact transmission of an electrical signal, and vehicle - Google Patents

Swivel coupling for the non-contact transmission of an electrical signal, and vehicle

Info

Publication number
EP2715863A1
EP2715863A1 EP12730369.1A EP12730369A EP2715863A1 EP 2715863 A1 EP2715863 A1 EP 2715863A1 EP 12730369 A EP12730369 A EP 12730369A EP 2715863 A1 EP2715863 A1 EP 2715863A1
Authority
EP
European Patent Office
Prior art keywords
electrode
segments
stator
rotor
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12730369.1A
Other languages
German (de)
French (fr)
Other versions
EP2715863B1 (en
Inventor
Hartmut Schäfer
Matthias Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Krauss Maffei Wegmann GmbH and Co KG
Original Assignee
Krauss Maffei Wegmann GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krauss Maffei Wegmann GmbH and Co KG filed Critical Krauss Maffei Wegmann GmbH and Co KG
Publication of EP2715863A1 publication Critical patent/EP2715863A1/en
Application granted granted Critical
Publication of EP2715863B1 publication Critical patent/EP2715863B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/06—Movable joints, e.g. rotating joints
    • H01P1/062—Movable joints, e.g. rotating joints the relative movement being a rotation
    • H01P1/066—Movable joints, e.g. rotating joints the relative movement being a rotation with an unlimited angle of rotation
    • H01P1/068—Movable joints, e.g. rotating joints the relative movement being a rotation with an unlimited angle of rotation the energy being transmitted in at least one ring-shaped transmission line located around the axis of rotation, e.g. "around the mast" rotary joint

Definitions

  • the invention relates to a rotary joint for non-contact transmission of an electrical signal, in particular a radio signal, preferably VHF signal, with a stator and a capacitive coupled to the stator electrode, with respect to the stator rotatable rotor electrode.
  • a radio signal preferably VHF signal
  • Another object of the invention is a vehicle with a signal generator, in particular for VHF signals, and an antenna connected to the signal generator.
  • Use can find the invention on military vehicles, which have a chassis and a rotatable relative to the chassis tower.
  • a radio For communication with a command center or other vehicles are typically equipped with a radio which is connected to an antenna.
  • the radio serves as a signal generator for the radio signals radiated via the antenna.
  • the antenna In order to allow the widest possible radiation range and thus the antenna is not in the directional range or shooting range of a main weapon, the antenna is in such a vehicle usually arranged at an elevated position on the tower.
  • the radio which as a rule can not be operated remotely, is located in the area of the chassis, in particular in crew area, in particular within a crew room, so that a connection of the radio to the antenna is required, which is a rotation of the tower relative to the chassis allowed.
  • a capacitive rotary coupling with a stationary stator electrode and a rotor electrode which can be rotated relative to the stator electrode and which are arranged around a cylindrical free space is known, for example, from DE 197 08 035 A1 known.
  • the rotor electrode consists of a single circular ring portion, while the stator electrode is designed as a circumferential ring line.
  • the stator electrode has a circumference which is of the order of the wavelength range of the signal to be transmitted. It has proven to be disadvantageous that line-theoretical effects occur that worsen the transmission behavior of the rotary joint, so that the transmission is possible only in a narrow, narrowband wavelength range.
  • this object is achieved by segmenting the stator electrode and / or the rotor electrode.
  • the stator electrode and / or the rotor electrode is subdivided into electrode segments.
  • the stator and / or the rotor electrode are thus constructed in multiple segments.
  • the dimensions of the segments may be selected to be small in relation to the wavelength range of the transmitted signal, so that wavelength-dependent transmission effects are reduced.
  • a broadband transmission of electrical signals via the rotary joint can be made possible.
  • the stator electrode and / or the rotor electrode is arranged around a cylindrical free space, in particular a passage for mechanical, optical and / or electrical components, so that further components can be arranged in the region of the free space.
  • the free space may preferably be configured such that an optical, in particular glass-optical, channel of a viewing device is arranged in it.
  • Stator electrode and / or the rotor electrode is segmented such that along the electrode no closed circulation is given to the free space. As a result, a flow of current around the free space can be prevented.
  • the circulation along the stator electrode and / or the rotor electrode may be interrupted, so that there is no conductive connection along the stator electrode or the rotor electrode around the free space. In this way, line-theoretical effects such as e.g. Reflection through the
  • Stator and / or the rotor electrode can be reduced.
  • the segments of the stator electrode are insulated from one another and / or if the segments of the rotor electrode are insulated from one another. Due to the insulation of the segments, a current flow between the segments of the stator electrode or between the segments of the rotor electrode can be prevented.
  • the stator electrode and / or the rotor electrode has an annular shape, whereby a free space is created in the region of the stator electrode and / or the rotor electrode. By the invention, the free spaces can have a large diameter.
  • the length, in particular the circumference, of the stator electrode and / or the rotor electrode is greater than 0.5 m, in particular greater than 0.8 m , preferably greater than 1 m.
  • the segments of the stator electrode and / or the rotor electrode are designed as circular ring segments.
  • the segments of the stator electrode and / or rotor electrode can be arranged along an annular course.
  • the length of the segments of the stator electrode and / or the rotor electrode is less than 1 m, in particular less than 0.8 m, preferably less than 0.5 m. In this way, it can be ensured that the length of the segments is less than one quarter of the wavelength of a VHF signal to be transmitted, so that wavelength-dependent effects can be reduced. Also advantageous is an embodiment in which the stator electrode and the rotor electrode are segmented analogously, so that line-theoretical effects are likewise reduced in the stator electrode and the rotor electrode. It is particularly advantageous if the stator electrode and the rotor electrode have the same number of segments, in particular two segments. This makes it possible to use a similar shading both on the side of the stator and on the side of the rotor. Preferred are the stator and the rotor electrode separated in half, so that the complexity of the shading can be kept low.
  • Stator electrode are formed identically and / or the segments of the rotor electrode are formed identically.
  • the stator electrode and / or the rotor electrode may be composed of similar segments, whereby the manufacture of the rotary joint is simplified.
  • the stator electrode and the rotor electrode are segmented in such a way that, in a zero position, a segment of the stator electrode faces in each case a segment of the rotor electrode.
  • Stator electrode and the rotor electrode is arranged an air gap.
  • the air gap may isolate the stator electrode from the rotor electrode.
  • a solid, liquid or gaseous insulator, in particular Teflon, can be arranged between the electrodes.
  • the rotor electrode may be rotatable relative to the stator electrode about a rotation axis. In this case, it is advantageous if the rotor electrode is at a distance from the stator electrode in a direction substantially parallel to the axis of rotation of the rotor electrode.
  • the electric field lines in the region between the rotor electrode and the stator electrode may extend in a direction substantially parallel to the axis of rotation.
  • the rotor electrode may be spaced from the stator electrode in a direction substantially perpendicular to the axis of rotation of the rotor electrode be.
  • the field lines between the rotor electrode and the stator electrode may be substantially perpendicular to the direction of the axis of rotation.
  • the stator electrode and / or the rotor electrode has a folded cross section. By a folded cross-section of the stator and / or the rotor electrode stray capacitances can be avoided.
  • the stator electrode may have a U-shaped cross-section, so that it can surround the rotor electrode with the open side of the "U" or vice versa.
  • the stator electrode and / or the rotor electrode can also be designed as conductor tracks arranged on a printed circuit board.
  • the rotary joint can have devices for shading the segments of the stator electrode and / or the rotor electrode.
  • the segments of the stator are connected in parallel and / or if the segments of the rotor electrode are connected in parallel. Through the parallel connection of the segments, the same signal can be transmitted across all segments. A weak signal can be supplied to the individual segments of the stator electrode or of the rotor electrode, which together give a stronger signal as a whole signal.
  • the segments of the stator electrode are connected to a device for splitting a signal onto the segments and if the segments of the rotor electrode are connected to a device for combining the signal from the segments. Furthermore, the segments of the rotor electrode with a device for splitting a Signals are connected to the segments and the segments of the
  • Stator electrode to be connected to a device for combining the signal from the segments.
  • a device for splitting the signal a so-called combiner can be used, by means of which a signal of a predetermined amplitude can be split into a plurality of signals of reduced amplitude.
  • a combiner can be used, in which case several weaker signals can be combined to form a stronger signal.
  • the device for splitting the signal and the device for combining the signal are identical, so that the number of required components is reduced.
  • the segments of the stator electrode and the rotor electrode are respectively connected to the device for splitting the signal or the device for combining the signal by means of a tap arranged in particular in the middle of the segment.
  • a housing surrounding the stator electrode and / or rotor electrode which has openings. Through the openings in the housing can between the
  • the housing may be formed of a non-conductive material.
  • the housing may be formed of an electrically conductive material. In this case, however, it may be necessary to Stator electrode and / or the rotor electrode as far away from an inner side of the housing to order to reduce unwanted capacitive coupling between the electrodes and the housing.
  • the housing may have a stator part enclosing the stator electrode and a rotor part enclosing the rotor electrode. Preferred are the
  • Stator part and the rotor part are electrically connected to each other, so that over the housing an additional conductive connection, in particular a ground connection, can be produced.
  • an additional conductive connection in particular a ground connection
  • the housing may have a slip ring transformer.
  • Another object of the invention is a vehicle with a signal generator, in particular for radio signals, preferably VHF signals, and an antenna connected to the signal generator.
  • a signal generator in particular for radio signals, preferably VHF signals
  • an antenna connected to the signal generator.
  • the object mentioned at the outset is achieved by connecting the signal generator and the antenna by means of a rotary coupling described above.
  • the stator electrode and / or the rotor electrode of the rotary joint is subdivided into segments whose dimensions can be selected to be small in relation to the wavelength range of the transmitted signal, so that wavelength-dependent transmission effects are reduced.
  • a broadband transmission of electrical signals from the signal generator via the rotary joint to the antenna can be made possible.
  • the antenna is rotatable relative to the signal generator, in particular arranged on a turret.
  • a rotatable antenna can influence the transmission and reception range of the antenna. Due to the arrangement of the antenna on a turret, NEN influences of viewing devices and weapons of the turret are reduced by the antenna.
  • the signal generator is a radio, in particular an analog radio, preferably in the VHF range.
  • the crew of the vehicle can communicate with other vehicles and / or an operations center.
  • the signal generator generates a signal in the frequency range from 30 to 300 MHz, in particular from 30 to 100 MHz, preferably in the military VHF range from 30 to 80 MHz.
  • the signal may have a power of up to 100 W, preferably from the range of 10 W to 100 W.
  • the vehicle according to the invention can also be used in the advantageous embodiments described in connection with the rotary coupling according to the invention.
  • the vehicle may also have a viewing device. This can be arranged on the tower. The optical channel of the viewer can run through the free space of the rotary joint.
  • Figure 1 is a side view of a military vehicle.
  • Figure 2 is a plan view of a rotary joint.
  • FIG. 3 is a sectional view of the rotary coupling of FIG. 2;
  • FIG. 4 shows in a sectional view perpendicular to the axis of rotation of the rotor, the rotor of the rotary coupling of FIG. 3.
  • FIG. 5 is a sectional view, vertical to the axis of rotation of the rotor, of the stator of the rotary coupling of FIG. 3; FIG. and
  • FIG. 6 is a block diagram of the rotary joint of FIG. 3.
  • a vehicle 1 which is designed as a military wheeled vehicle.
  • the vehicle 1 has a chassis designed as a trough 2 with wheels 3 and a turret 5.
  • a crew room 4 is arranged, in which a designed as a radio device 31 signal generator is arranged.
  • the crew of the vehicle 1 can make contact with a command center.
  • the radio device 31 generates a signal in the military VHF frequency range of 30 to 80 MHz, in particular with a power of 40W.
  • the tower 5 In the area of the roof of the tub 2, the tower 5 is rotatably mounted about a turntable 8 about a rotation axis D opposite the tub 2.
  • the tower 5 carries a weapon 6, which is directable in elevation.
  • an antenna 7 In the region of the upper end of the tower 5, an antenna 7 is further arranged, which is connected to the radio device 31. For clarity, this compound is not shown in FIG.
  • a capacitive rotary coupling 9 which is arranged in the region of the axis of rotation D of the tower 5.
  • the rotary coupling 9 has a segmented stator electrode 21 and a segmented rotor electrode 11, whereby the transmission of broadband signals via the rotary coupling 9 can be made possible.
  • the rotary coupling 9 consists essentially of a stator 20 and a rotor 10 which is rotatable about the rotation axis D relative to the stator. While the stator 20 is arranged on the trough 2 in the vehicle 1 shown in FIG. 1, the rotor 10 is connected to the tower 5. Due to the analog configuration of stator 20 and rotor 10, however, the rotary joint 9 could also be arranged in the reverse manner on the vehicle.
  • the rotary coupling 9 is of annular shape and extends around a cylindrical free space F.
  • the free space F extends along the axis of rotation D and can be used to arrange further components or the Implementation of mechanical, electrical and / or optical components are used by the rotary joint 9.
  • a viewing device 40 for example a periscope, is arranged on the tower 5, wherein the glass-optical channel runs from the viewing device 40 to the vehicle interior through the free space F of the rotary coupling 9.
  • the region of the rotation axis D is thus available for the glass-optical channel.
  • the stator 20 has a stator electrode 21 which is capacitively coupled to the rotor electrode 11 arranged on the rotor.
  • the cross-section of the stator electrode 21 is U-shaped folded in order to obtain the largest possible area for the coupling of the electrodes .
  • the rotor electrode 11, on the other hand, has a rectangular cross-section which engages in the region of the opening of the "U" in the stator electrode 21.
  • the stator electrode 21 is thus both in a direction parallel to the axis of rotation D and in a direction perpendicular to the axis of rotation D. is spaced from the rotor electrode 11. There is an air gap between the electrodes 11, 21.
  • a solid or liquid insulator, eg Teflon, or a gaseous medium may be introduced between the electrodes 11, 21
  • the stator 20 further includes a metallic housing 25 which supports the
  • Stator electrode 21 and parts of the rotor 10, in particular the rotor electrode 11 encloses. If the housing 25 and the electrodes 1 1, 21 are not at the same potential, there is a parasitic capacitance between the respective electrodes 11, 21 and the housing. In order to reduce this parasitic capacity, 25 openings can be arranged in the housing.
  • a counter pole of the VHF signal in particular a mass, can be guided via the housing 25 of the rotary coupling 9 from the stator 20 to the rotor 10, so that no further capacitive transmission path is required for the VHF signal except the capacitive transmission path described above is.
  • the housing 25 can have a stator part and a rotor part, between which there is an electrically good conductive connection, which can be produced for example via a contacting slip ring track.
  • electrode 11 and the stator 21 it is necessary to electrode 11 and the stator 21 as far as possible from the inside of the enclosing housing 25 to be arranged to minimize parasitic capacitances.
  • a plurality of taps 13 are arranged both on the stator 20 and on the rotor 10, which are contacted with the respective electrode 11, 21 via a feed line 14, 24.
  • the circumference of the stator electrode 21 and / or the rotor electrode 1 1 in the exemplary embodiment is greater than 0.5 m, in particular greater than 0.8 m, preferably greater than 1 m. Since the circumference of the rotor electrode 11 and the
  • Both the rotor electrode 11 and the stator electrode 21 are segmented, so that the order of magnitude of the individual segments 12.1, 12.2, 22.1, 22.2 is less than a quarter of the wavelength of the transmitted signals.
  • the illustrations in FIGS. 4 and 5 show a section through the rotary joint 9 along the line designated S-S in FIG. 3, the rotor electrode 10 and the stator electrode 20 being shown separated from one another.
  • the rotor electrode 11 is, as shown in FIG. 4, divided into two segments 12.1, 12.2, which are identical.
  • the segments 12.1, 12.2 of the rotor electrode 11 have, in particular, the same length and are arranged in the manner of circular ring segments around the free space F running around.
  • the segments 12.1, 12.2 are insulated from one another so that separation points result between the segments 12.1, 12.2 which produce a galvanic separation. tion of the segments 12.1, 12.2 cause.
  • a tap 13.1, 13.2 is provided in each case in the middle of the segments 12.1, 12.2.
  • Stator electrode 21 divided into segments: The stator electrode 21 is also half in two segments 22.1, 22.2 separated, which are identical.
  • the segments 22.1, 22.2 of the stator 21 are formed so that they are exactly opposite in the zero position shown in Figs. 4 and 5.
  • the right-hand segment 12.2 of the rotor electrode 11 is capacitively coupled to the right-hand segment 22.2 of the stator electrode 21; the left segment 12.1 of the rotor electrode 11 in the illustration is capacitively coupled to the left segment 22.1 of the stator electrode.
  • Stator electrode 21 and / or the segments 12.1, 12.2 of the rotor electrode 11 is less than 1 m, in particular less than 0.8 m, preferably less than 0.5 m.
  • the radio 31 is connected to a device 30.1 for splitting the signal generated by the radio, which transmits the signal generated by the radio 31 in two Separates signals with half amplitude, which are led via separate leads 32 and 33 to the segments 22.1, 22.2 of the stator 21.
  • the supply line 32 is via the tap 23.1 with the Segment 22.1 of the stator 21 connected.
  • the other supply line 33 is connected via a further tap 23.2 with the segment 22.2 of the stator 21.
  • the two segments 22.1, 22.2 of the stator electrode 21 are thus connected in parallel and transmit substantially identical information.
  • the device 30.1 is designed such that the terminals which are connected to the leads 32, 33 are insulated from each other .
  • the segments 22.1, 22.1 of the stator electrode 21 are capacitively coupled to the segments 12.1, 12.2 of the rotor electrode 11, which are connected via the supply lines 34 and 35 to a device 30.2 for combining the signals.
  • a device 30.2 is referred to as a combiner and is usually formed reversible, so that a plurality of individual signals can be combined in one direction and in the opposite direction, a signal can be split into a plurality of individual signals.
  • the rotor-side combiner 30.2 merges the two signals transmitted via the rotary coupling 9 and forwards the resulting total signal to the antenna 7. Conversely, a signal received by the antenna 7 can be split by means of the combiner 30.2 and fed via the leads 34 and 35, the rotor segments 12.1, 12.2, the stator segments 22.1, 22.2, the leads 32 and 33 to the combiner 30.1.
  • the stator-side combiner 30.1 merges the signals and forwards them to the radio device 31, which operates in this receiving direction as a signal receiver.
  • the electrodes 11, 21 of the rotary joint can also have more than two segments 12.1, 12.2, 22.1, 22.2.
  • the combiners 30.1, 30.2 it is necessary to design the combiners 30.1, 30.2 in such a way. form that can split or merge the corresponding number of individual signals.
  • the rotary coupling 9 described above has a stator electrode 21 and a rotor electrode 11, which are divided into segments 12.1, 12.2 and 22.1, 22.2.
  • the dimensions of the segments 12.1, 12.2, 22.1, 22.2 can be selected to be small in relation to the wavelength range of the transmitted signal, so that wavelength-dependent transmission effects are reduced.
  • a broadband transmission of high-frequency electrical signals, in particular a VHF signal, via the rotary coupling 9 are made possible.
  • powers of up to at least 100 W can be transmitted.

Abstract

The invention relates to a swivel coupling for the non-contact transmission of an electrical signal, in particular a VHF signal, having a stator electrode (21) and a rotor electrode (11), which is capacitively coupled to the stator electrode (21) and is rotatable with respect to the stator electrode (21), wherein the stator electrode (21) and/or the rotor electrode (11) are/is segmented. The invention also relates to a vehicle (1) having a signal generator, in particular for VHF signals, and an antenna that is connected to the signal generator, wherein the signal generator and the antenna are connected by means of such a swivel coupling.

Description

Drehkupplung zur berührungsfreien Übertragung eines elektrischen Signals und Fahrzeug  Rotary coupling for non-contact transmission of an electrical signal and vehicle
Die Erfindung betrifft eine Drehkupplung zur berührungsfreien Übertragung eines elektrischen Signals, insbesondere eines Funk-Signals, bevorzugt VHF- Signals, mit einer Statorelektrode und einer kapazitiv mit der Statorelektrode gekoppelten, gegenüber der Statorelektrode drehbaren Rotorelektrode. Ein weiterer Gegenstand der Erfindung ist ein Fahrzeug mit einem Signalerzeuger, insbesondere für VHF-Signale, und einer mit dem Signalerzeuger verbundenen Antenne. Einsatz kann die Erfindung an Fahrzeugen aus dem militärischen Bereich finden, welche ein Fahrgestell und einen gegenüber dem Fahrgestell drehbaren Turm aufweisen. Zur Kommunikation mit einer Einsatzzentrale oder anderen Fahrzeugen sind derartige Fahrzeuge typischerweise mit einem Funkgerät aus- gerüstet, welches mit einer Antenne verbunden ist. Das Funkgerät dient dabei unter anderem als Signalerzeuger für die über die Antenne abgestrahlten Funksignale. The invention relates to a rotary joint for non-contact transmission of an electrical signal, in particular a radio signal, preferably VHF signal, with a stator and a capacitive coupled to the stator electrode, with respect to the stator rotatable rotor electrode. Another object of the invention is a vehicle with a signal generator, in particular for VHF signals, and an antenna connected to the signal generator. Use can find the invention on military vehicles, which have a chassis and a rotatable relative to the chassis tower. For communication with a command center or other vehicles such vehicles are typically equipped with a radio which is connected to an antenna. Among other things, the radio serves as a signal generator for the radio signals radiated via the antenna.
Um einen möglichst weit reichenden Abstrahlbereich zu ermöglichen und da- mit sich die Antenne nicht im Richtbereich bzw. Schießbereich einer Hauptwaffe befindet, ist die Antenne bei einem derartigen Fahrzeug in der Regel an einer erhöhten Position auf dem Turm angeordnet. Das in der Regel nicht fernbedienbare Funkgerät hingegen befindet sich vor allem bei besatzungslosen bzw. fernbedienten Panzertürmen im Bereich des Fahrgestells, insbeson- dere innerhalb eines Besatzungsraums, so dass eine Verbindung des Funkgeräts mit der Antenne erforderlich ist, welche eine Drehung des Turms gegenüber dem Fahrgestell erlaubt. In order to allow the widest possible radiation range and thus the antenna is not in the directional range or shooting range of a main weapon, the antenna is in such a vehicle usually arranged at an elevated position on the tower. In contrast, the radio, which as a rule can not be operated remotely, is located in the area of the chassis, in particular in crew area, in particular within a crew room, so that a connection of the radio to the antenna is required, which is a rotation of the tower relative to the chassis allowed.
Zur Übertragung hochfrequenter elektrischer Signale zwischen zwei gegenei- nander drehbaren Bauteilen ist es allgemein bekannt, eine Drehkupplung zu verwenden, welche im Bereich einer Drehachse der Bauteile angeordnet ist. Bei einem Fahrzeug der vorstehend beschriebenen Art ist es im Hinblick auf eine Drehkupplung allerdings erforderlich, dass im Bereich der Drehachse ein Freiraum zur Durchführung optischer Komponenten, z. B. eines Periskops vor- gehalten wird. In order to transmit high-frequency electrical signals between two mutually rotatable components, it is generally known to use a rotary coupling which is arranged in the region of a rotation axis of the components. In a vehicle of the type described above, however, with regard to a rotary joint, it is necessary that in the region of the axis of rotation a free space for the implementation of optical components, for. B. a periscope is held.
Eine kapazitive Drehkupplung mit einer feststehenden Statorelektrode und einer gegenüber der Statorelektrode drehbaren Rotorelektrode, welche um einen zylindrischen Freiraum angeordnet sind, ist beispielsweise aus der DE 197 08 035 A1 bekannt. Bei dieser Drehkupplung besteht die Rotorelektrode aus einem einzelnen Kreisringabschnitt, während die Statorelektrode als umlaufende Ringleitung ausgestaltet ist. Bei der Verwendung dieser Drehkupplung in einem Fahrzeug der vorstehend genannten Art ist es bei großen Abmessungen eines vorgegebenen Freiraums allerdings möglich, dass die Statorelektrode einen Umfang aufweist, der in der Größenordnung des Wellenlängenbereichs des zu übertragenden Signals liegt. Dabei hat es sich als nachteilig erwiesen, dass leitungstheoretische Effekte auftreten, die das Übertragungsverhalten der Drehkupplung verschlechtern, so dass die Übertragung nur in einem eng begrenzten, schmalbandigen Wellenlängenbereich möglich ist. A capacitive rotary coupling with a stationary stator electrode and a rotor electrode which can be rotated relative to the stator electrode and which are arranged around a cylindrical free space is known, for example, from DE 197 08 035 A1 known. In this rotary joint, the rotor electrode consists of a single circular ring portion, while the stator electrode is designed as a circumferential ring line. When using this rotary joint in a vehicle of the aforementioned type, however, it is possible for large dimensions of a given clearance, that the stator electrode has a circumference which is of the order of the wavelength range of the signal to be transmitted. It has proven to be disadvantageous that line-theoretical effects occur that worsen the transmission behavior of the rotary joint, so that the transmission is possible only in a narrow, narrowband wavelength range.
A u f g a b e der Erfindung ist es, die breitbandige Übertragung von elektri- sehen Signalen über eine Drehkupplung zu ermöglichen. It is an object of the invention to enable broadband transmission of electrical signals via a rotary joint.
Bei einer Drehkupplung der eingangs genannten Art wird diese Aufgabe dadurch g e l ö s t , dass die Statorelektrode und/oder die Rotorelektrode segmentiert ist. In a rotary joint of the aforementioned type, this object is achieved by segmenting the stator electrode and / or the rotor electrode.
Die Statorelektrode und/oder die Rotorelektrode ist in Elektroden-Segmente unterteilt. Die Statorelektrode und/oder die Rotorelektrode sind somit mehrsegmentig aufgebaut. Die Abmessungen der Segmente können klein im Verhältnis zu dem Wellenlängenbereich des übertragenen Signals gewählt sein, so dass wellenlängenabhängige Übertragungseffekte verringert werden. Somit kann eine breitbandige Übertragung von elektrischen Signalen über die Drehkupplung ermöglicht werden. Bevorzugt ist die Statorelektrode und/oder die Rotorelektrode um einen zylindrischen Freiraum, insbesondere eine Durchführung für mechanische, optische und/oder elektrische Komponenten, angeordnet, so dass im Bereich des Freiraums weitere Bauteile angeordnet werden können. Der Freiraum kann bevorzugt derart ausgestaltet sein, dass in ihm ein optischer insbesondere glasoptischer, Kanal eines Sichtgeräts angeordnet ist. The stator electrode and / or the rotor electrode is subdivided into electrode segments. The stator and / or the rotor electrode are thus constructed in multiple segments. The dimensions of the segments may be selected to be small in relation to the wavelength range of the transmitted signal, so that wavelength-dependent transmission effects are reduced. Thus, a broadband transmission of electrical signals via the rotary joint can be made possible. Preferably, the stator electrode and / or the rotor electrode is arranged around a cylindrical free space, in particular a passage for mechanical, optical and / or electrical components, so that further components can be arranged in the region of the free space. The free space may preferably be configured such that an optical, in particular glass-optical, channel of a viewing device is arranged in it.
In diesem Zusammenhang ist es besonders vorteilhaft, wenn die In this context, it is particularly advantageous if the
Statorelektrode und/oder die Rotorelektrode derart segmentiert ist, dass ent- lang der Elektrode kein geschlossener Umlauf um den Freiraum gegeben ist. Hierdurch kann ein Stromfluss um den Freiraum herum verhindert werden. Der Umlauf entlang der Statorelektrode und/oder der Rotorelektrode kann unterbrochen sein, so dass keine leitfähige Verbindung entlang der Statorelektrode bzw. der Rotorelektrode um den Freiraum herum besteht. Auf diese Weise können leitungstheoretische Effekte wie z.B. Reflexion durch die Stator electrode and / or the rotor electrode is segmented such that along the electrode no closed circulation is given to the free space. As a result, a flow of current around the free space can be prevented. The circulation along the stator electrode and / or the rotor electrode may be interrupted, so that there is no conductive connection along the stator electrode or the rotor electrode around the free space. In this way, line-theoretical effects such as e.g. Reflection through the
Statorelektrode und /oder die Rotorelektrode verringert werden. Stator and / or the rotor electrode can be reduced.
Zur Unterdrückung wellenlängenabhängiger Effekte ist es ferner vorteilhaft, wenn die Segmente der Statorelektrode voneinander isoliert sind und/oder wenn die Segmente der Rotorelektrode voneinander isoliert sind. Durch die Isolation der Segmente kann ein Stromfluss zwischen den Segmenten der Statorelektrode bzw. zwischen den Segmenten der Rotorelektrode verhindert werden. Bevorzugt weist die Statorelektrode und/oder die Rotorelektrode einen kreisringförmigen Verlauf auf, wodurch im Bereich der Statorelektrode und/oder der Rotorelektrode ein kreisförmiger Freiraum entsteht. Durch die Erfindung können die Freiräume einen großen Durchmesser aufweisen. Für die Durchführung von Komponenten durch die Statorelektrode und/oder die Rotorelektrode hat es sich als besonders vorteilhaft erwiesen, wenn die Länge, insbesondere der Umfang, der Statorelektrode und/oder der Rotorelektrode größer als 0,5 m, insbesondere größer als 0,8 m, bevorzugt größer als 1 m ist. In order to suppress wavelength-dependent effects, it is also advantageous if the segments of the stator electrode are insulated from one another and / or if the segments of the rotor electrode are insulated from one another. Due to the insulation of the segments, a current flow between the segments of the stator electrode or between the segments of the rotor electrode can be prevented. Preferably, the stator electrode and / or the rotor electrode has an annular shape, whereby a free space is created in the region of the stator electrode and / or the rotor electrode. By the invention, the free spaces can have a large diameter. For the passage of components through the stator electrode and / or the rotor electrode, it has proved to be particularly advantageous if the length, in particular the circumference, of the stator electrode and / or the rotor electrode is greater than 0.5 m, in particular greater than 0.8 m , preferably greater than 1 m.
Gemäß einer weiteren vorteilhaften Ausgestaltung sind die Segmente der Statorelektrode und/oder der Rotorelektrode als Kreisringsegmente ausgebil- det. Hierdurch können die Segmente der Statorelektrode und/oder Rotorelektrode entlang eines kreisringförmigen Verlaufs angeordnet sein. According to a further advantageous embodiment, the segments of the stator electrode and / or the rotor electrode are designed as circular ring segments. As a result, the segments of the stator electrode and / or rotor electrode can be arranged along an annular course.
Für die Übertragung von Signalen mit geringer Wellenlänge ist es von Vorteil, wenn die Länge der Segmente der Statorelektrode und/oder der Rotorelektro- de kleiner als 1 m, insbesondere kleiner als 0,8 m, bevorzugt kleiner als 0,5 m ist. Hierdurch kann gewährleistet werden, dass die Länge der Segmente kleiner als ein Viertel der Wellenlänge eines zu übertragenden VHF-Signals ist, so dass wellenlängenabhängige Effekte verringert werden können. Vorteilhaft ist ferner eine Ausgestaltung, bei welcher die Statorelektrode und die Rotorelektrode analog segmentiert sind, so dass leitungstheoretische Effekte gleichermaßen in der Statorelektrode und der Rotorelektrode verringert werden. Besonders vorteilhaft ist es, wenn die Statorelektrode und die Rotorelektrode die gleiche Anzahl an Segmenten, insbesondere zwei Segmente, aufweisen. Hierdurch wird es ermöglicht, sowohl auf der Seite der Stators als auch auf der Seite des Rotors eine gleichartige Verschattung zu verwenden. Bevorzugt sind die Statorelektrode und die Rotorelektrode hälftig getrennt, so dass die Komplexität der Verschattung gering gehalten werden kann. For the transmission of signals with a short wavelength, it is advantageous if the length of the segments of the stator electrode and / or the rotor electrode is less than 1 m, in particular less than 0.8 m, preferably less than 0.5 m. In this way, it can be ensured that the length of the segments is less than one quarter of the wavelength of a VHF signal to be transmitted, so that wavelength-dependent effects can be reduced. Also advantageous is an embodiment in which the stator electrode and the rotor electrode are segmented analogously, so that line-theoretical effects are likewise reduced in the stator electrode and the rotor electrode. It is particularly advantageous if the stator electrode and the rotor electrode have the same number of segments, in particular two segments. This makes it possible to use a similar shading both on the side of the stator and on the side of the rotor. Preferred are the stator and the rotor electrode separated in half, so that the complexity of the shading can be kept low.
Als vorteilhaft hat es sich ferner erwiesen, wenn die Segmente der It has also proved to be advantageous if the segments of the
Statorelektrode identisch ausgebildet sind und/oder die Segmente der Rotorelektrode identisch ausgebildet sind. Auf diese Weise kann die Statorelektrode und/oder die Rotorelektrode aus gleichartigen Segmenten zusammengesetzt sein, wodurch die Fertigung der Drehkupplung vereinfacht wird. Gemäß einer konstruktiven Ausgestaltung sind die Statorelektrode und die Rotorelektrode derart segmentiert, dass in einer Nullstellung einem Segment der Statorelektrode jeweils ein Segment der Rotorelektrode gegenübersteht. Stator electrode are formed identically and / or the segments of the rotor electrode are formed identically. In this way, the stator electrode and / or the rotor electrode may be composed of similar segments, whereby the manufacture of the rotary joint is simplified. According to a constructive embodiment, the stator electrode and the rotor electrode are segmented in such a way that, in a zero position, a segment of the stator electrode faces in each case a segment of the rotor electrode.
Hinsichtlich der kapazitiven Kopplung der Statorelektrode und der Rotorelekt- rode hat es sich ferner als vorteilhaft erwiesen, wenn zwischen der With regard to the capacitive coupling of the stator electrode and the rotor electrode, it has also proven to be advantageous if between the
Statorelektrode und der Rotorelektrode ein Luftspalt angeordnet ist. Der Luftspalt kann die Statorelektrode von der Rotorelektrode isolieren. Alternativ kann zwischen den Elektroden ein fester, flüssiger oder gasförmiger Isolator, insbesondere Teflon, angeordnet sein.  Stator electrode and the rotor electrode is arranged an air gap. The air gap may isolate the stator electrode from the rotor electrode. Alternatively, a solid, liquid or gaseous insulator, in particular Teflon, can be arranged between the electrodes.
Die Rotorelektrode kann gegenüber der Statorelektrode um eine Drehachse drehbar sein. Hierbei ist es vorteilhaft, wenn die Rotorelektrode in einer zu der Drehachse der Rotorelektrode im Wesentlichen parallelen Richtung von der Statorelektrode beabstandet ist. Die elektrischen Feldlinien im Bereich zwischen der Rotorelektrode und der Statorelektrode können in einer im Wesentlichen parallelen Richtung zu der Drehachse verlaufen. The rotor electrode may be rotatable relative to the stator electrode about a rotation axis. In this case, it is advantageous if the rotor electrode is at a distance from the stator electrode in a direction substantially parallel to the axis of rotation of the rotor electrode. The electric field lines in the region between the rotor electrode and the stator electrode may extend in a direction substantially parallel to the axis of rotation.
Ferner kann die Rotorelektrode in einer zu der Drehachse der Rotorelektrode im Wesentlichen senkrechten Richtung von der Statorelektrode beabstandet sein. Hierbei können die Feldlinien zwischen der Rotorelektrode und der Statorelektrode im Wesentlichen senkrecht zur Richtung der Drehachse verlaufen. Bei einer möglichen Ausgestaltung weist die Statorelektrode und/oder die Rotorelektrode einen gefalteten Querschnitt auf. Durch einen gefalteten Querschnitt der Statorelektrode und/oder der Rotorelektrode können Streukapazitäten vermieden werden. Insbesondere kann die Statorelektrode einen U- förmigen Querschnitt aufweisen, so dass sie die Rotorelektrode mit der offe- nen Seite des„U" umgreifen kann oder umgekehrt. Furthermore, the rotor electrode may be spaced from the stator electrode in a direction substantially perpendicular to the axis of rotation of the rotor electrode be. Here, the field lines between the rotor electrode and the stator electrode may be substantially perpendicular to the direction of the axis of rotation. In one possible embodiment, the stator electrode and / or the rotor electrode has a folded cross section. By a folded cross-section of the stator and / or the rotor electrode stray capacitances can be avoided. In particular, the stator electrode may have a U-shaped cross-section, so that it can surround the rotor electrode with the open side of the "U" or vice versa.
Die Statorelektrode und/oder die Rotorelektrode können auch als auf einer Platine angeordnete Leiterbahnen ausgestaltet sein. Überdies kann die Drehkupplung Vorrichtungen zur Verschattung der Segmente der Statorelektrode und/oder der Rotorelektrode aufweisen. In diesem Zusammenhang hat es sich als vorteilhaft erwiesen, wenn die Segmente der Statorelektrode parallel geschaltet sind und/oder wenn die Segmente der Rotorelektrode parallel geschaltet sind. Durch die Parallelschaltung der Segmen- te kann über alle Segmente das gleiche Signal übertragen werden. Den einzelnen Segmenten der Statorelektrode bzw. der Rotorelektrode kann ein schwaches Signal zugeführt werden, wobei diese zusammengenommen ein stärkeres Signal Gesamtsignal ergeben. Besonders vorteilhaft ist es, wenn die Segmente der Statorelektrode mit einer Vorrichtung zur Aufspaltung eines Signals auf die Segmente verbunden sind und wenn die Segmente der Rotorelektrode mit einer Vorrichtung zum Zusammenführen des Signals von den Segmenten verbunden sind. Ferner können die Segmente der Rotorelektrode mit einer Vorrichtung zur Aufspaltung eines Signals auf die Segmente verbunden sind und die Segmente der The stator electrode and / or the rotor electrode can also be designed as conductor tracks arranged on a printed circuit board. Moreover, the rotary joint can have devices for shading the segments of the stator electrode and / or the rotor electrode. In this context, it has proven to be advantageous if the segments of the stator are connected in parallel and / or if the segments of the rotor electrode are connected in parallel. Through the parallel connection of the segments, the same signal can be transmitted across all segments. A weak signal can be supplied to the individual segments of the stator electrode or of the rotor electrode, which together give a stronger signal as a whole signal. It is particularly advantageous if the segments of the stator electrode are connected to a device for splitting a signal onto the segments and if the segments of the rotor electrode are connected to a device for combining the signal from the segments. Furthermore, the segments of the rotor electrode with a device for splitting a Signals are connected to the segments and the segments of the
Statorelektrode mit einer Vorrichtung zum Zusammenführen des Signals von den Segmenten verbunden sein. Als Vorrichtung zur Aufspaltung des Signals kann ein so genannter Combiner zur Anwendung kommen, mittels dem ein Signal einer vorgegebenen Amplitude in mehrere Signale mit reduzierter Amplitude aufgespaltet werden kann. Auch zum Zusammenführen des Signals kann ein Combiner zur Anwendung kommen, wobei hier mehrere schwächere Signale zu einem stärkeren Signal zusammengeführt werden können. Für die Fertigung der Kupplung ist es vorteilhaft, wenn die Vorrichtung zur Aufspaltung des Signals und die Vorrichtung zum Zusammenführen des Signals identisch ausgebildet sind, so dass die Anzahl erforderlicher Bauteile verringert wird. Gemäß einer konstruktiven Ausgestaltung ist vorgesehen, dass die Segmente der Statorelektrode und der Rotorelektrode jeweils mittels eines insbesondere in der Mitte des Segments angeordneten Abgriffs mit der Vorrichtung zur Aufspaltung des Signals oder der Vorrichtung zur Zusammenführung des Signals verbunden sind. Stator electrode to be connected to a device for combining the signal from the segments. As a device for splitting the signal, a so-called combiner can be used, by means of which a signal of a predetermined amplitude can be split into a plurality of signals of reduced amplitude. Also for merging the signal, a combiner can be used, in which case several weaker signals can be combined to form a stronger signal. For the production of the coupling, it is advantageous if the device for splitting the signal and the device for combining the signal are identical, so that the number of required components is reduced. According to a constructive embodiment, it is provided that the segments of the stator electrode and the rotor electrode are respectively connected to the device for splitting the signal or the device for combining the signal by means of a tap arranged in particular in the middle of the segment.
Vorteilhaft ist ferner eine Ausgestaltung mit einem die Statorelektrode und/oder Rotorelektrode umschließenden Gehäuse, welches Öffnungen aufweist. Durch die Öffnungen in dem Gehäuse können zwischen der Also advantageous is an embodiment with a housing surrounding the stator electrode and / or rotor electrode, which has openings. Through the openings in the housing can between the
Statorelektrode und/oder der Rotorelektrode und dem Gehäuse vorliegende parasitäre Kapazitäten verringert werden. Ferner kann das Gehäuse aus einem nichtleitenden Material ausgebildet sein. Stator and / or the rotor electrode and the housing parasitic capacitances are reduced. Furthermore, the housing may be formed of a non-conductive material.
Alternativ kann das Gehäuse aus einem elektrisch leitfähigen Material ausgebildet sein. In diesem Fall kann es jedoch erforderlich sein, die Statorelektrode und/oder die Rotorelektrode möglichst weit entfernt von einer Innenseite des Gehäuses anzuordnen, um ungewollte kapazitive Kopplungen zwischen den Elektroden und dem Gehäuse zu verringern. Das Gehäuse kann einen die Statorelektrode umschließenden Statorteil und einen die Ro- torelektrode umschließenden Rotorteil aufweisen. Bevorzugt sind der Alternatively, the housing may be formed of an electrically conductive material. In this case, however, it may be necessary to Stator electrode and / or the rotor electrode as far away from an inner side of the housing to order to reduce unwanted capacitive coupling between the electrodes and the housing. The housing may have a stator part enclosing the stator electrode and a rotor part enclosing the rotor electrode. Preferred are the
Statorteil und der Rotorteil miteinander elektrisch verbunden, so dass über das Gehäuse eine zusätzliche leitende Verbindung, insbesondere eine Masseverbindung, hergestellt werden kann. Zur elektrischen Verbindung des  Stator part and the rotor part are electrically connected to each other, so that over the housing an additional conductive connection, in particular a ground connection, can be produced. For the electrical connection of the
Statorteils und des Rotorteils kann das Gehäuse einen Schleifringübertrager aufweisen. Stator part and the rotor part, the housing may have a slip ring transformer.
Ein weiterer Gegenstand der Erfindung ist ein Fahrzeug mit einem Signalerzeuger, insbesondere für Funk-Signale, bevorzugt VHF-Signale, und einer mit dem Signalerzeuger verbundenen Antenne. Bei einem derartigen Fahrzeug wird die eingangs genannte Aufgabe dadurch g e l ö s t , dass der Signalerzeu- ger und die Antenne mittels einer vorstehend beschriebenen Drehkupplung verbunden sind.  Another object of the invention is a vehicle with a signal generator, in particular for radio signals, preferably VHF signals, and an antenna connected to the signal generator. In such a vehicle, the object mentioned at the outset is achieved by connecting the signal generator and the antenna by means of a rotary coupling described above.
Die Statorelektrode und/oder die Rotorelektrode der Drehkupplung ist in Segmente unterteilt, deren Abmessungen klein im Verhältnis zu dem Wellenlän- genbereich des übertragenen Signals gewählt sein können, so dass wellenlängenabhängige Übertragungseffekte verringert werden. Somit kann eine breit- bandige Übertragung von elektrischen Signalen von dem Signalerzeuger über die Drehkupplung zu der Antenne ermöglicht werden. Gemäß einer vorteilhaften Ausgestaltung ist die Antenne gegenüber dem Signalerzeuger drehbar, insbesondere an einem Drehturm, angeordnet. Durch eine drehbare Antenne kann der Sende- und Empfangsbereich der Antenne be- einflusst werden. Durch die Anordnung der Antenne an einem Drehturm kön- nen Beeinflussungen von Sichtgeräten und Waffen des Drehturms durch die Antenne verringert werden. The stator electrode and / or the rotor electrode of the rotary joint is subdivided into segments whose dimensions can be selected to be small in relation to the wavelength range of the transmitted signal, so that wavelength-dependent transmission effects are reduced. Thus, a broadband transmission of electrical signals from the signal generator via the rotary joint to the antenna can be made possible. According to an advantageous embodiment, the antenna is rotatable relative to the signal generator, in particular arranged on a turret. A rotatable antenna can influence the transmission and reception range of the antenna. Due to the arrangement of the antenna on a turret, NEN influences of viewing devices and weapons of the turret are reduced by the antenna.
Gemäß einer weiteren bevorzugten Ausgestaltung ist der Signalerzeuger ein Funkgerät, insbesondere ein analoges Funkgerät, bevorzugt im VHF-Bereich. Mittels eines Funkgerätes kann die Besatzung des Fahrzeugs mit anderen Fahrzeugen und /oder einer Einsatzzentrale kommunizieren. According to a further preferred embodiment, the signal generator is a radio, in particular an analog radio, preferably in the VHF range. By means of a radio, the crew of the vehicle can communicate with other vehicles and / or an operations center.
Gemäß einer konstruktiven Ausgestaltung erzeugt der Signalerzeuger ein Signal im Frequenzbereich von 30 bis 300 MHz, insbesondere von 30 bis 100 MHz, bevorzugt im militärischen VHF-Bereich von 30 bis 80 MHz. Das Signal kann eine Leistung von bis zu 100 W aufweisen, bevorzugt aus dem Bereich von 10 W bis 100 W. Zusätzlich zu den vorstehend beschriebenen vorteilhaften Ausgestaltungen können bei dem erfindungsgemäßen Fahrzeug ferner die im Zusammenhang mit der erfindungsgemäßen Drehkupplung beschriebenen vorteilhaften Ausgestaltungen zur Anwendung kommen. Das Fahrzeug kann zudem ein Sichtgerät aufweisen. Diese kann auf dem Turm angeordnet sein. Der optische Kanal des Sichtgeräts kann durch den Frei räum der Drehkupplung verlaufen. According to a structural embodiment, the signal generator generates a signal in the frequency range from 30 to 300 MHz, in particular from 30 to 100 MHz, preferably in the military VHF range from 30 to 80 MHz. The signal may have a power of up to 100 W, preferably from the range of 10 W to 100 W. In addition to the above-described advantageous embodiments, the vehicle according to the invention can also be used in the advantageous embodiments described in connection with the rotary coupling according to the invention. The vehicle may also have a viewing device. This can be arranged on the tower. The optical channel of the viewer can run through the free space of the rotary joint.
Weitere Vorteile und Einzelheiten der Erfindung werden nachfolgend unter Zuhilfenahme der beigefügten Zeichnungen anhand eines Ausführungsbeispiels erläutert. In diesen zeigt: Further advantages and details of the invention will be explained below with reference to the accompanying drawings with reference to an embodiment. In these shows:
Fig. 1 in einer Seitenansicht ein militärisches Fahrzeug; Fig. 2 in einer Draufsicht eine Drehkupplung; Figure 1 is a side view of a military vehicle. Figure 2 is a plan view of a rotary joint.
Fig. 3 in einer Schnittdarstellung die Drehkupplung aus der Fig. 2; FIG. 3 is a sectional view of the rotary coupling of FIG. 2; FIG.
Fig. 4 in einer Schnittdarstellung senkrecht zur Drehachse des Rotors den Rotor der Drehkupplung aus der Fig. 3; 4 shows in a sectional view perpendicular to the axis of rotation of the rotor, the rotor of the rotary coupling of FIG. 3.
Fig. 5 in einer Schnittdarstellung vertikal zu der Drehachse des Rotors den Stator der Drehkupplung aus der Fig. 3; und FIG. 5 is a sectional view, vertical to the axis of rotation of the rotor, of the stator of the rotary coupling of FIG. 3; FIG. and
Fig. 6 ein Blockschaltbild der Drehkupplung aus der Fig. 3. 6 is a block diagram of the rotary joint of FIG. 3.
In der Fig. 1 ist ein Fahrzeug 1 dargestellt, welches als militärisches Radfahrzeug ausgebildet ist. Das Fahrzeug 1 weist ein als Wanne 2 ausgebildetes Fahr- gestell mit Rädern 3 sowie einen Drehturm 5 auf. In Fig. 1, a vehicle 1 is shown, which is designed as a military wheeled vehicle. The vehicle 1 has a chassis designed as a trough 2 with wheels 3 and a turret 5.
Innerhalb der Wanne 2 des militärischen Fahrzeugs 1 ist ein Besatzungsraum 4 angeordnet, in welchem ein als Funkgerät 31 ausgebildeter Signalerzeuger angeordnet ist. Anhand des Funkgeräts 31 kann die Besatzung des Fahrzeugs 1 Kontakt zu einer Kommandozentrale aufnehmen. Das Funkgerät 31 erzeugt dabei ein Signal im militärischen VHF- Frequenzbereich von 30 bis 80 MHz, insbesondere mit einer Leistung von 40W. Within the tub 2 of the military vehicle 1, a crew room 4 is arranged, in which a designed as a radio device 31 signal generator is arranged. On the basis of the radio device 31, the crew of the vehicle 1 can make contact with a command center. The radio device 31 generates a signal in the military VHF frequency range of 30 to 80 MHz, in particular with a power of 40W.
Im Bereich des Daches der Wanne 2 ist der Turm 5 über einen Drehkranz 8 drehbar um eine Drehachse D gegenüber der Wanne 2 gelagert. Der Turm 5 trägt eine Waffe 6, welche in Elevation richtbar ist. Im Bereich des oberen Endes des Turms 5 ist ferner eine Antenne 7 angeordnet, welche mit dem Funkgerät 31 verbunden ist. Aus Gründen der Übersichtlichkeit ist diese Verbindung in der Fig. 1 nicht dargestellt. Um die Übertragung von analogen Funk-Signalen von dem Funkgerät 31 zu der gegenüber dem Funkgerät drehbaren Antenne 7 zu ermöglichen, ist im Bereich zwischen dem Turm 5 und der Wanne 2 eine kapazitive Drehkupplung 9 vorgesehen, welche im Bereich der Drehachse D des Turms 5 angeordnet ist. Gemäß der Erfindung weist die Dreh- kupplung 9 eine segmentierte Statorelektrode 21 und eine segmentierte Rotorelektrode 11 auf, wodurch die Übertragung von breitbandigen Signalen über die Drehkupplung 9 ermöglicht werden kann. In the area of the roof of the tub 2, the tower 5 is rotatably mounted about a turntable 8 about a rotation axis D opposite the tub 2. The tower 5 carries a weapon 6, which is directable in elevation. In the region of the upper end of the tower 5, an antenna 7 is further arranged, which is connected to the radio device 31. For clarity, this compound is not shown in FIG. To the transmission of analog Providing radio signals from the radio 31 to the antenna 7 rotatable relative to the radio is provided in the area between the tower 5 and the tub 2, a capacitive rotary coupling 9, which is arranged in the region of the axis of rotation D of the tower 5. According to the invention, the rotary coupling 9 has a segmented stator electrode 21 and a segmented rotor electrode 11, whereby the transmission of broadband signals via the rotary coupling 9 can be made possible.
Im Folgenden soll anhand der Fig. 2-6 auf die Segmentierung der Elektroden 11 , 21 sowie weitere Einzelheiten der Drehkupplung eingegangen werden: In the following, the segmentation of the electrodes 11, 21 as well as further details of the rotary joint will be explained with reference to FIGS. 2-6:
Die Drehkupplung 9 besteht im Wesentlichen aus einem Stator 20 und einem um die Drehachse D gegenüber dem Stator drehbaren Rotor 10. Während der Stator 20 bei dem in der Fig. 1 gezeigten Fahrzeug 1 an der Wanne 2 angeord- net ist, ist der Rotor 10 mit dem Turm 5 verbunden. Aufgrund der analogen Ausgestaltung von Stator 20 und Rotor 10 könnte die Drehkupplung 9 aber auch in umgekehrter Weise an dem Fahrzeug angeordnet sein. The rotary coupling 9 consists essentially of a stator 20 and a rotor 10 which is rotatable about the rotation axis D relative to the stator. While the stator 20 is arranged on the trough 2 in the vehicle 1 shown in FIG. 1, the rotor 10 is connected to the tower 5. Due to the analog configuration of stator 20 and rotor 10, however, the rotary joint 9 could also be arranged in the reverse manner on the vehicle.
Wie der Draufsicht auf den Rotor 10 in der Fig. 2 zu entnehmen, ist die Dreh- kupplung 9 von kreisringförmiger Gestalt und erstreckt sich um einen zylindrischen Freiraum F. Der Freiraum F erstreckt sich entlang der Drehachse D und kann zur Anordnung weiterer Bauteile oder zur Durchführung von mechanischen, elektrischen und/oder optischen Komponenten durch die Drehkupplung 9 genutzt werden. Bei dem in Fig. 1 dargestellten Fahrzeug 1 ist auf dem Turm 5 ein Sichtgerät 40, beispielsweise ein Periskop, angeordnet, wobei der glasoptische Kanal vom Sichtgerät 40 zum Fahrzeuginnenraum durch den Freiraum F der Drehkupplung 9 verläuft. Der Bereich der Drehachse D steht somit für den glasoptischen Kanal zur Verfügung. Der Stator 20 weist eine Statorelektrode 21 auf, welche kapazitiv mit der am Rotor angeordneten Rotorelektrode 11 gekoppelt ist. Wie der Schnittdarstellung entlang der in der Fig. 2 gezeigten Schnittlinie III-III in der Fig. 3 zu entnehmen, ist der Querschnitt der Statorelektrode 21 U-förmig gefaltet ausge- bildet, um eine möglichst große für die Kopplung der Elektroden aktive Fläche zu erhalten. Die Rotorelektrode 11 hingegen weist einen rechteckigen Querschnitt auf, welcher in den Bereich der Öffnung des„U" in die Statorelektrode 21 eingreift. Die Statorelektrode 21 ist somit sowohl in einer Richtung parallel zu der Drehachse D als auch in einer zu der Drehachse D senkrechten Richtung von der Rotorelektrode 11 beabstandet. Zwischen den Elektroden 11 , 21 befindet sich ein Luftspalt; alternativ kann zur Isolierung der Elektroden 11 , 21 ein fester oder flüssiger Isolator, z. B. Teflon, oder ein gasförmiges Medium zwischen die Elektroden 11 , 21 eingebracht werden. Der Stator 20 weist ferner ein metallisches Gehäuse 25 auf, welches dieAs can be seen from the top view of the rotor 10 in FIG. 2, the rotary coupling 9 is of annular shape and extends around a cylindrical free space F. The free space F extends along the axis of rotation D and can be used to arrange further components or the Implementation of mechanical, electrical and / or optical components are used by the rotary joint 9. In the vehicle 1 shown in FIG. 1, a viewing device 40, for example a periscope, is arranged on the tower 5, wherein the glass-optical channel runs from the viewing device 40 to the vehicle interior through the free space F of the rotary coupling 9. The region of the rotation axis D is thus available for the glass-optical channel. The stator 20 has a stator electrode 21 which is capacitively coupled to the rotor electrode 11 arranged on the rotor. As can be seen from the sectional view along the section line III-III shown in FIG. 2 in FIG. 3, the cross-section of the stator electrode 21 is U-shaped folded in order to obtain the largest possible area for the coupling of the electrodes , The rotor electrode 11, on the other hand, has a rectangular cross-section which engages in the region of the opening of the "U" in the stator electrode 21. The stator electrode 21 is thus both in a direction parallel to the axis of rotation D and in a direction perpendicular to the axis of rotation D. is spaced from the rotor electrode 11. There is an air gap between the electrodes 11, 21. Alternatively, to isolate the electrodes 11, 21, a solid or liquid insulator, eg Teflon, or a gaseous medium may be introduced between the electrodes 11, 21 The stator 20 further includes a metallic housing 25 which supports the
Statorelektrode 21 sowie Teile des Rotors 10, insbesondere die Rotorelektrode 11 , umschließt. Sofern sich das Gehäuse 25 und die Elektroden 1 1 , 21 nicht auf dem gleichen Potential befinden, besteht zwischen der jeweiligen Elektrode 11 , 21 und dem Gehäuse eine parasitäre Kapazität. Um diese parasitäre Kapa- zität zu verringern, können in dem Gehäuse 25 Öffnungen angeordnet werden. Stator electrode 21 and parts of the rotor 10, in particular the rotor electrode 11 encloses. If the housing 25 and the electrodes 1 1, 21 are not at the same potential, there is a parasitic capacitance between the respective electrodes 11, 21 and the housing. In order to reduce this parasitic capacity, 25 openings can be arranged in the housing.
Optional kann ein Gegenpol des VHF-Signals, insbesondere eine Masse, über das Gehäuse 25 der Drehkupplung 9 vom Stator 20 zu dem Rotor 10 geführt werden, so dass außer der vorstehend beschriebenen kapazitiven Übertra- gungsstrecke für das VHF-Signal keine weitere kapazitive Übertragungsstrecke erforderlich ist. Das Gehäuse 25 kann hierzu einen Statorteil und einen Rotorteil aufweisen, zwischen denen eine elektrisch gut leitfähige Verbindung besteht, welche beispielsweise über eine kontaktierende Schleifringbahn hergestellt werden kann. In diesem Fall ist es allerdings erforderlich, die Rotor- elektrode 11 und die Statorelektrode 21 möglichst weit entfernt von der Innenseite des sie umschließenden Gehäuses 25 anzuordnen, um parasitäre Kapazitäten möglichst gering zu halten. Im Bereich hinter den Elektroden 11 , 21 sind sowohl am Stator 20 als auch am Rotor 10 mehrere Abgriffe 13 angeordnet, welche mit der jeweiligen Elektrode 11 , 21 über eine Zuleitung 14, 24 kontaktiert sind. Optionally, a counter pole of the VHF signal, in particular a mass, can be guided via the housing 25 of the rotary coupling 9 from the stator 20 to the rotor 10, so that no further capacitive transmission path is required for the VHF signal except the capacitive transmission path described above is. For this purpose, the housing 25 can have a stator part and a rotor part, between which there is an electrically good conductive connection, which can be produced for example via a contacting slip ring track. In this case, however, it is necessary to electrode 11 and the stator 21 as far as possible from the inside of the enclosing housing 25 to be arranged to minimize parasitic capacitances. In the area behind the electrodes 11, 21 a plurality of taps 13 are arranged both on the stator 20 and on the rotor 10, which are contacted with the respective electrode 11, 21 via a feed line 14, 24.
Um einen Freiraum F mit möglichst großem Durchmesser zu erhalten, ist der Umfang der Statorelektrode 21 und/oder der Rotorelektrode 1 1 bei dem Ausführungsbeispiels größer als 0,5 m, insbesondere größer als 0,8 m, bevorzugt größer als 1 m gewählt. Da der Umfang der Rotorelektrode 11 und der In order to obtain a free space F with the largest possible diameter, the circumference of the stator electrode 21 and / or the rotor electrode 1 1 in the exemplary embodiment is greater than 0.5 m, in particular greater than 0.8 m, preferably greater than 1 m. Since the circumference of the rotor electrode 11 and the
Statorelektrode 21 somit in der Größenordnung der Wellenlänge der übertragenen Signale liegt, sind bei der Drehkupplung 9 besondere Vorkehrungen ge- troffen, um wellenlängenabhängige Dämpfungseffekte zu verringern: Sowohl die Rotorelektrode 11 als auch die Statorelektrode 21 sind segmentiert ausgebildet, so dass die Größenordnung der einzelnen Segmente 12.1 , 12.2, 22.1 , 22.2 kleiner als ein Viertel der Wellenlänge der übertragenden Signale ist. Die Darstellungen in den Fig. 4 und 5 zeigen einen Schnitt durch die Drehkupplung 9 entlang der in der Fig. 3 mit S-S bezeichneten Linie, wobei die Rotorelektrode 10 und die Statorelektrode 20 getrennt voneinander dargestellt sind. Die Rotorelektrode 11 ist, wie der Fig. 4 zu entnehmen, in zwei Segmente 12.1 , 12.2 geteilt, welche identisch ausgebildet sind. Die Segmente 12.1 , 12.2 der Rotorelektrode 11 weisen insbesondere dieselbe Länge auf und sind nach Art von Kreisringsegmenten um den Freiraum F herum verlaufend angeordnet. In the case of the rotary joint 9, special precautions are taken to reduce wavelength-dependent damping effects. Both the rotor electrode 11 and the stator electrode 21 are segmented, so that the order of magnitude of the individual segments 12.1, 12.2, 22.1, 22.2 is less than a quarter of the wavelength of the transmitted signals. The illustrations in FIGS. 4 and 5 show a section through the rotary joint 9 along the line designated S-S in FIG. 3, the rotor electrode 10 and the stator electrode 20 being shown separated from one another. The rotor electrode 11 is, as shown in FIG. 4, divided into two segments 12.1, 12.2, which are identical. The segments 12.1, 12.2 of the rotor electrode 11 have, in particular, the same length and are arranged in the manner of circular ring segments around the free space F running around.
Die Segmente 12.1 , 12.2 sind voneinander isoliert, so dass sich zwischen den Segmenten 12.1 , 12.2 Trennstellen ergeben, welche eine galvanische Tren- nung der Segmente 12.1 , 12.2 bewirken. Durch die Isolierung der Segmente 12.1 , 12.2 voneinander ist kein geschlossener Umlauf leitfähigen Materials entlang der Rotorelektrode 1 1 um den Freiraum F gegeben. Zur Kontaktierung der Segmente 12.1 , 12.2 ist jeweils in der Mitte der Segmente 12.1 , 12.2 ein Ab- griff 13.1 , 13.2 vorgesehen. The segments 12.1, 12.2 are insulated from one another so that separation points result between the segments 12.1, 12.2 which produce a galvanic separation. tion of the segments 12.1, 12.2 cause. By isolating the segments 12. 1, 12. 2 from each other, there is no closed circulation of conductive material along the rotor electrode 1 1 around the free space F. For contacting the segments 12.1, 12.2, a tap 13.1, 13.2 is provided in each case in the middle of the segments 12.1, 12.2.
Analog zu der Rotorelektrode 11 ist die in der Fig. 5 dargestellte Analogous to the rotor electrode 11 is shown in FIG
Statorelektrode 21 in Segmente unterteilt: Die Statorelektrode 21 ist ebenfalls hälftig in zwei Segmente 22.1 , 22.2 getrennt, welche identisch ausgebildet sind. Die Segmente 22.1 , 22.2 der Statorelektrode 21 sind derart ausgebildet, dass sie sich in der in den Fig. 4 und 5 dargestellten Nullstellung genau gegenüberliegen. In dieser Nullstellung ist das in der Darstellung rechte Segment 12.2 der Rotorelektrode 11 kapazitiv mit dem rechten Segment 22.2 der Statorelektrode 21 gekoppelt; das linke Segment 12.1 der Rotorelektrode 11 in der Darstellung ist kapazitiv mit dem linken Segment 22.1 der Statorelektrode gekoppelt. Stator electrode 21 divided into segments: The stator electrode 21 is also half in two segments 22.1, 22.2 separated, which are identical. The segments 22.1, 22.2 of the stator 21 are formed so that they are exactly opposite in the zero position shown in Figs. 4 and 5. In this zero position, the right-hand segment 12.2 of the rotor electrode 11 is capacitively coupled to the right-hand segment 22.2 of the stator electrode 21; the left segment 12.1 of the rotor electrode 11 in the illustration is capacitively coupled to the left segment 22.1 of the stator electrode.
In dem Ausführungsbeispiel ist die Länge der Segmente 22.1 , 22.2 der In the embodiment, the length of the segments 22.1, 22.2 of
Statorelektrode 21 und/oder der Segmente 12.1 , 12.2 der Rotorelektrode 11 kleiner als 1 m, insbesondere kleiner als 0,8 m, bevorzugt kleiner als 0,5 m. Stator electrode 21 and / or the segments 12.1, 12.2 of the rotor electrode 11 is less than 1 m, in particular less than 0.8 m, preferably less than 0.5 m.
Anhand der Fig. 6 soll im Folgenden die Verschaltung der Segmente 12.1 , 12.2, 22.1 , 22.2 erläutert werden: Das Funkgerät 31 ist mit einer Vorrichtung 30.1 zur Aufspaltung des von dem Funkgerät erzeugten Signals verbunden, welche das von dem Funkgerät 31 erzeugte Signal in zwei Signale mit halber Amplitude trennt, die über getrennte Zuleitungen 32 und 33 zu den Segmenten 22.1 , 22.2 der Statorelektrode 21 geleitet werden. Die Zuleitung 32 ist dabei über den Abgriff 23.1 mit dem Segment 22.1 der Statorelektrode 21 verbunden. Die andere Zuleitung 33 ist über einen weiteren Abgriff 23.2 mit dem Segment 22.2 der Statorelektrode 21 verbunden. Die beiden Segmente 22.1 , 22.2 der Statorelektrode 21 sind somit parallel verschaltet und übertragen im Wesentlichen identische Informationen. Um die galvanische Trennung der einzelnen Segmente 12.1 , 12.2, 22.1 , 22.2 der Elektroden 11 , 21 auch im verschalteten Zustand zu erhalten, ist die Vorrichtung 30.1 derart ausgebildet, dass die Anschlüsse, welche mit den Zuleitungen 32, 33 verbunden sind, voneinander isoliert sind. Die Segmente 22.1 , 22.1 der Statorelektrode 21 sind kapazitiv mit den Segmenten 12.1 , 12.2 der Rotorelektrode 1 1 gekoppelt, welche über die Zuleitungen 34 und 35 mit einer Vorrichtung 30.2 zum Zusammenführen der Signale verbunden sind. Eine solche Vorrichtung 30.2 wird als Combiner bezeichnet und ist üblicherweise reversibel ausgebildet, so dass in einer Richtung mehrere Einzelsignale zusammengeführt werden können und in der Gegenrichtung ein Signal in mehrere Einzelsignale aufgespaltet werden kann. Der rotorseitige Combiner 30.2 führt die beiden über die Drehkupplung 9 übertragenen Signale zusammen und leitet das resultierende Gesamtsignal an die Antenne 7 weiter. Umgekehrt kann ein durch die Antenne 7 empfangenes Signal mittels des Combiners 30.2 aufgespaltet werden und über die Zuleitungen 34 und 35, die Rotorsegmente 12.1 , 12.2, die Statorsegmente 22.1 , 22.2, die Zuleitungen 32 und 33 zu dem Combiner 30.1 geleitet werden. Der statorseitige Combiner 30.1 führt die Signale zusammen und leitet sie dem Funkgerät 31 zu, welches in dieser Empfangsrichtung als Signalempfänger arbeitet. 6, the connection of the segments 12.1, 12.2, 22.1, 22.2 will be explained below: The radio 31 is connected to a device 30.1 for splitting the signal generated by the radio, which transmits the signal generated by the radio 31 in two Separates signals with half amplitude, which are led via separate leads 32 and 33 to the segments 22.1, 22.2 of the stator 21. The supply line 32 is via the tap 23.1 with the Segment 22.1 of the stator 21 connected. The other supply line 33 is connected via a further tap 23.2 with the segment 22.2 of the stator 21. The two segments 22.1, 22.2 of the stator electrode 21 are thus connected in parallel and transmit substantially identical information. In order to obtain the galvanic isolation of the individual segments 12.1, 12.2, 22.1, 22.2 of the electrodes 11, 21, even in the connected state, the device 30.1 is designed such that the terminals which are connected to the leads 32, 33 are insulated from each other , The segments 22.1, 22.1 of the stator electrode 21 are capacitively coupled to the segments 12.1, 12.2 of the rotor electrode 11, which are connected via the supply lines 34 and 35 to a device 30.2 for combining the signals. Such a device 30.2 is referred to as a combiner and is usually formed reversible, so that a plurality of individual signals can be combined in one direction and in the opposite direction, a signal can be split into a plurality of individual signals. The rotor-side combiner 30.2 merges the two signals transmitted via the rotary coupling 9 and forwards the resulting total signal to the antenna 7. Conversely, a signal received by the antenna 7 can be split by means of the combiner 30.2 and fed via the leads 34 and 35, the rotor segments 12.1, 12.2, the stator segments 22.1, 22.2, the leads 32 and 33 to the combiner 30.1. The stator-side combiner 30.1 merges the signals and forwards them to the radio device 31, which operates in this receiving direction as a signal receiver.
In einer Weiterbildung des Ausführungsbeispiels können die Elektroden 11 , 21 der Drehkupplung auch mehr als zwei Segmente 12.1 , 12.2, 22.1 , 22.2 aufweisen. In diesem Fall ist es erforderlich, die Combiner 30.1 , 30.2 derart auszu- bilden, dass die die entsprechende Anzahl an Einzelsignalen aufspalten bzw. zusammenführen können. In a development of the exemplary embodiment, the electrodes 11, 21 of the rotary joint can also have more than two segments 12.1, 12.2, 22.1, 22.2. In this case, it is necessary to design the combiners 30.1, 30.2 in such a way. form that can split or merge the corresponding number of individual signals.
Die vorstehend beschriebene Drehkupplung 9 weist eine Statorelektrode 21 und eine Rotorelektrode 11 auf, welche in Segmente 12.1 , 12.2 und 22.1 , 22.2 unterteilt sind. Die Abmessungen der Segmente 12.1 , 12.2, 22.1 , 22.2 können klein im Verhältnis zu dem Wellenlängenbereich des übertragenen Signals gewählt sein, so dass wellenlängenabhängige Übertragungseffekte verringert werden. Somit kann eine breitbandige Übertragung von hochfrequenten elekt- tischen Signalen, insbesondere eines VHF-Signals, über die Drehkupplung 9 ermöglicht werden. Mittels des beschriebenen Drehübertragers können Leistungen bis mindestens 100 W übertragen werden. The rotary coupling 9 described above has a stator electrode 21 and a rotor electrode 11, which are divided into segments 12.1, 12.2 and 22.1, 22.2. The dimensions of the segments 12.1, 12.2, 22.1, 22.2 can be selected to be small in relation to the wavelength range of the transmitted signal, so that wavelength-dependent transmission effects are reduced. Thus, a broadband transmission of high-frequency electrical signals, in particular a VHF signal, via the rotary coupling 9 are made possible. By means of the described rotary transformer, powers of up to at least 100 W can be transmitted.
Bezugszeichen: Reference numerals:
1 Fahrzeug 2 Wanne 1 vehicle 2 tub
3 Rad 3 wheel
4 Besatzungsraum 5 Drehturm 6 Waffe 4 crew room 5 turret 6 weapon
7 Antenne 8 Drehkranz 9 Drehkupplung 10 Rotor 7 Antenna 8 Slewing ring 9 Rotary coupling 10 Rotor
11 Rotorelektrode 12.1 , 12.2 Segment 13.1 , 13.2 Abgriff 11 rotor electrode 12.1, 12.2 segment 13.1, 13.2 tap
14.1 , 14.2 Zuleitung 20 Stator 14.1, 14.2 supply line 20 stator
21 Statorelektrode 22.1 , 22.2 Segment 23.1 , 23.2 Abgriff 21 stator electrode 22.1, 22.2 segment 23.1, 23.2 tap
24.1 , 24.2 Zuleitung 25 Gehäuse24.1, 24.2 supply line 25 housing
30.1 , 30.2 Combiner 31 Funkgerät 32-35 Zuleitung 40 Sichtgerät D Drehachse S Schnittlinie 30.1, 30.2 Combiner 31 Radio 32-35 Supply line 40 Viewing device D Rotary axis S Cutting line

Claims

Patentansprüche:  claims:
Drehkupplung zur berührungsfreien Übertragung eines elektrischen Signals, insbesondere eines VHF-Signals, mit einer Statorelektrode (21) und einer kapazitiv mit der Statorelektrode (21) gekoppelten, gegenüber der Statorelektrode (21) drehbaren Rotorelektrode (11), dadurch gekennzeichnet, dass die Statorelektrode (21) und/oder die Rotorelektrode (11) segmentiert ist. Rotary coupling for non-contact transmission of an electrical signal, in particular a VHF signal, with a stator electrode (21) and a rotor electrode (11) capacitively coupled to the stator electrode (21) and rotatable relative to the stator electrode (21), characterized in that the stator electrode ( 21) and / or the rotor electrode (11) is segmented.
Drehkupplung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Statorelektrode (21) und/oder die Rotorelektrode (11) um einen zylindrischen Freiraum (F), insbesondere eine Durchführung für mechanische, optische und/oder elektrische Komponenten, angeordnet ist. Rotary coupling according to one of the preceding claims, characterized in that the stator electrode (21) and / or the rotor electrode (11) is arranged around a cylindrical clearance (F), in particular a bushing for mechanical, optical and / or electrical components.
Drehkupplung nach Anspruch 2, dadurch gekennzeichnet dass die Statorelektrode (21) und/oder die Rotorelektrode (11) derart segmentiert ist, dass entlang der Elektrode (11, 21) kein geschlossener Umlauf um den Freiraum (F) gegeben ist. Rotary coupling according to claim 2, characterized in that the stator electrode (21) and / or the rotor electrode (11) is segmented such that along the electrode (11, 21) no closed circulation around the free space (F) is given.
Drehkupplung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Segmente (22.1, 22.2) der Statorelektrode (21) voneinander isoliert sind und/oder dass die Segmente (12.1, 12.2) der Rotorelektrode (11 ) voneinander isoliert sind. Rotary coupling according to one of the preceding claims, characterized in that the segments (22.1, 22.2) of the stator electrode (21) are insulated from each other and / or that the segments (12.1, 12.2) of the rotor electrode (11) are insulated from each other.
5. Drehkupplung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Statorelektrode (21) und/oder die Rotorelektrode (11) einen kreisringförmigen Verlauf aufweist. 5. Rotary coupling according to one of the preceding claims, characterized in that the stator electrode (21) and / or the rotor electrode (11) has an annular course.
6. Drehkupplung nach Anspruch 5, dadurch gekennzeichnet, dass der Umfang der Statorelektrode (21 ) und/oder der Rotorelektrode (11 ) größer als 0,5 m, insbesondere größer als 0,8 m, bevorzugt größer als 1 m ist. 6. Rotary coupling according to claim 5, characterized in that the circumference of the stator electrode (21) and / or the rotor electrode (11) is greater than 0.5 m, in particular greater than 0.8 m, preferably greater than 1 m.
7. Drehkupplung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Segmente (22.1 , 22.2) der Statorelektrode (22) und/oder die Segmente (12.1 , 12.2) der Rotorelektrode (11 ) als Kreisringsegmente ausgebildet sind. 7. Rotary coupling according to one of the preceding claims, characterized in that the segments (22.1, 22.2) of the stator electrode (22) and / or the segments (12.1, 12.2) of the rotor electrode (11) are formed as circular ring segments.
8. Drehkupplung nach Anspruch 7, dadurch gekennzeichnet, dass die Länge der Segmente (22.1 , 22.2) der Statorelektrode (21 ) und/oder der Segmente (12.1 , 12.2) der Rotorelektrode (1 1 ) kleiner als 1 m, insbesondere kleiner als 0,8 m, bevorzugt kleiner als 0,5 m ist. 8. Rotary coupling according to claim 7, characterized in that the length of the segments (22.1, 22.2) of the stator electrode (21) and / or the segments (12.1, 12.2) of the rotor electrode (1 1) is less than 1 m, in particular less than 0 , 8 m, preferably less than 0.5 m.
9. Drehkupplung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Statorelektrode (21 ) und die Rotorelektrode (11 ) die gleiche Anzahl an Segmenten (12.1 , 12.2, 22.1 , 22.2), insbesondere zwei Segmente (12.1 , 12.2, 22.1 , 22.2), aufweisen. 9. Rotary coupling according to one of the preceding claims, characterized in that the stator electrode (21) and the rotor electrode (11) the same number of segments (12.1, 12.2, 22.1, 22.2), in particular two segments (12.1, 12.2, 22.1, 22.2 ), exhibit.
10. Drehkupplung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Segmente (22.1 , 22.2) der Statorelektrode (21 ) parallel geschaltet sind und/oder dass die Segmente (12.1 , 12.2) der Rotorelektrode (11 ) parallel geschaltet sind. 10. Rotary coupling according to one of the preceding claims, characterized in that the segments (22.1, 22.2) of the stator electrode (21) are connected in parallel and / or that the segments (12.1, 12.2) of the rotor electrode (11) are connected in parallel.
11. Drehkupplung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Segmente (22.1 , 22.2) der Statorelektrode (21 ) mit einer Vorrichtung (30.1 ) zur Aufspaltung eines Signals auf die Segmente (22.1 , 22.2) verbunden sind und dass die Segmente (12.1 , 11. Rotary coupling according to one of the preceding claims, characterized in that the segments (22.1, 22.2) of the stator electrode (21) with a device (30.1) for splitting a signal to the segments (22.1, 22.2) are connected and that the segments (22 12.1,
12.2) der Rotorelektrode (11) mit einer Vorrichtung (30.2) zum Zusammenführen des Signals von den Segmenten (12.1, 12.2) verbunden sind und/oder umgekehrt. 12.2) of the rotor electrode (11) are connected to a device (30.2) for combining the signal from the segments (12.1, 12.2) and / or vice versa.
Drehkupplung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Segmente (22.1, 22.2) der Statorelektrode (21) und die Segmente (12.1, 12.2) der Rotorelektrode (11) jeweils mittels eines in der Mitte des Segments (12.1, 12.2, 22.1, 22.2) angeordneten Abgriffs (13.1, 13.2, 23.1, 23.2) mit der Vorrichtung (30.1) zur Aufspaltung des Signals oder der Vorrichtung (30.2) zur Zusammenführung des Signals verbunden sind. Rotary coupling according to one of the preceding claims, characterized in that the segments (22.1, 22.2) of the stator electrode (21) and the segments (12.1, 12.2) of the rotor electrode (11) each by means in the middle of the segment (12.1, 12.2, 22.1 , 22.2) arranged taps (13.1, 13.2, 23.1, 23.2) with the device (30.1) for splitting the signal or the device (30.2) for combining the signal are connected.
Fahrzeug mit einem Signalerzeuger (31), insbesondere für VHF-Signale, und einer mit dem Signalerzeuger (31) verbundenen Antenne (7), dadurch gekennzeichnet, Vehicle having a signal generator (31), in particular for VHF signals, and an antenna (7) connected to the signal generator (31), characterized
dass der Signalerzeuger (31) und die Antenne (7) mittels einer Drehkupplung (9) nach einem der vorhergehenden Ansprüche verbunden sind.  in that the signal generator (31) and the antenna (7) are connected by means of a rotary coupling (9) according to one of the preceding claims.
Fahrzeug nach Anspruch 13, dadurch gekennzeichnet, dass die Antenne (7) gegenüber dem Signalerzeuger (31) drehbar, insbesondere an einem Drehturm (5), angeordnet ist. Vehicle according to claim 13, characterized in that the antenna (7) relative to the signal generator (31) rotatable, in particular on a turret (5), is arranged.
15. Fahrzeug nach einem der Ansprüche 13 oder 14, dadurch gekennzeichnet, dass der Signalerzeuger (31) ein Funkgerät ist. 15. Vehicle according to one of claims 13 or 14, characterized in that the signal generator (31) is a radio.
EP12730369.1A 2011-05-24 2012-05-18 Rotary coupler for non-contact transmission of an electrical signal and vehicle Active EP2715863B1 (en)

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DE102011050588A DE102011050588A1 (en) 2011-05-24 2011-05-24 Rotary coupling for non-contact transmission of an electrical signal and vehicle
PCT/DE2012/100147 WO2012159622A1 (en) 2011-05-24 2012-05-18 Swivel coupling for the non-contact transmission of an electrical signal, and vehicle

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DE102018201510A1 (en) * 2018-02-01 2019-08-01 Robert Bosch Gmbh Device for transmitting a signal by means of waveguides
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JP2913636B2 (en) * 1987-03-10 1999-06-28 ソニー株式会社 Rotary coupler
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WO2012159622A1 (en) 2012-11-29
EP2715863B1 (en) 2019-07-31

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