EP3154134B1 - Slip ring assembly for high frequence ethernet connexion - Google Patents
Slip ring assembly for high frequence ethernet connexion Download PDFInfo
- Publication number
- EP3154134B1 EP3154134B1 EP16192225.7A EP16192225A EP3154134B1 EP 3154134 B1 EP3154134 B1 EP 3154134B1 EP 16192225 A EP16192225 A EP 16192225A EP 3154134 B1 EP3154134 B1 EP 3154134B1
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- EP
- European Patent Office
- Prior art keywords
- slip ring
- electrically conductive
- carrier
- slip
- frequency
- 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.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/64—Devices for uninterrupted current collection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
- H01R13/6461—Means for preventing cross-talk
- H01R13/6471—Means for preventing cross-talk by special arrangement of ground and signal conductors, e.g. GSGS [Ground-Signal-Ground-Signal]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
- H01R13/6461—Means for preventing cross-talk
- H01R13/6463—Means for preventing cross-talk using twisted pairs of wires
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/34—Connections of conductor to slip-ring
Definitions
- the invention relates to a rotary high frequency slip ring transmitter of the passive type.
- This has an axial arrangement of the transmission elements (slip ring plus corresponding grinding arm) and is designed for gain-free transmission of data signals with a frequency from 50 MHz, in particular at 250 MHz, 500 MHz or 1 GHz.
- EP 2 451 028 A2 and DE 10 2008 051 671 A1 disclose, for example slip ring devices for transmitting data signals of a camera.
- Ethernet signals with a signal frequency of 100 MHz (Fast Ethernet), 250 MHz (Gigabit Ethernet) or even 600 MHz or more (10 Gigabit Ethernet) are applied to such known slip ring transmitters, interference-free data transmission can not be ensured.
- a slip ring which has a plurality of conductor pairs on its lateral surface. In each case between two adjacent conductor track pairs, a projecting outwardly shielding surface is provided, which are connected inwardly with a extending in the axial direction of the conductive rear wall.
- Such slip ring transmitters are for the transmission of data signals up to 20 MHz well usable.
- the extending in the axial direction of the rear wall is integrally formed and ensures a free surface electron movement on the inside of Sliding tracks.
- a slip ring transformer of the type mentioned does not suffice for a reliable avoidance of crosstalk between the data lines.
- such a transformer has disadvantages in terms of assembly. The connection of the tracks to the center of the slip ring carrier out is cumbersome and requires a separate insulation. An exchange of individual tracks as a result of wear or contamination is not possible.
- the invention solves this problem with the features in the main claim.
- the rotary high frequency slip ring transmitter comprises a brush carrier external to the rotation axis and an inside slip ring carrier.
- the slip ring carrier has the basic shape of a hollow cylinder.
- Brush holder and slip ring carrier are rotatably mounted relative to each other and with respect to the axis of rotation.
- At the slip ring transformer a plurality of transmission members are arranged, wherein a transmission member is formed in each case from a slip ring arm on the brush holder and a arranged at the same axial height corresponding slip ring on slip ring carrier.
- the slip ring boom is with at least one contact point on corresponding slip ring applied to transmit an electrical current in direct physical contact.
- the sanding arms on the brush carrier are connected to data cores of a first data cable, and the plurality of slip rings on the slip ring carrier are also connected to data cores of a second data cable.
- Each of these data cables has at least two pairs of data wires, each comprising a ground wire and a signal wire, and additionally at least one base potential conductor, which is preferably designed as a sheath of all data wire pairs.
- the data cables can be loosely led out of the slip ring transformer. Alternatively it can be arranged with a conventional occupancy on the brush holder and / or slip ring carrier a socket.
- first and second slip rings on the slip ring carrier, and a plurality of first and second grinding jibs are provided on the brush carrier, with a first and a second slip ring and a first and a second grinding jig forming a pair, respectively.
- These pairs are juxtaposed in the direction of the axis of rotation, in each pair one of the slip rings being connected to a ground wire and the other being connected to a signal wire from a pair of associated data wires.
- each slip ring pair On both sides of each slip ring pair an electrically conductive disc is arranged. This is connected to a base potential conductor of the second data cable connected. Further, a third slip ring is disposed on the slip ring carrier in the axial direction adjacent to the entirety of the slip ring pairs, which is in contact with a corresponding third grinding arm on the brush holder. Preferably, electrically conductive disks are also arranged on both sides of the third slip ring.
- the third grinding arm is connected to a base potential conductor of the first data cable. Furthermore, all electrically conductive disks are electrically conductively connected to the base potential conductor of the second data cable.
- the electrically conductive discs extend much farther towards the center of the slip ring carrier than the slip rings.
- the electrically conductive discs cover the entire free cross-sectional area within the slip ring carrier and in overlap with the slip rings.
- Passages may be provided in the disks through which the second data cable and / or one or more data wire pairs can be routed. Such passages may for example be arranged concentrically to the axis of rotation.
- the first and second slip rings are interconnected within a pair in an alternating pair sequence of the ground wire or signal wire of an associated data wire pair, i. in the axial direction according to the scheme earth - signal
- the connection order is such that there are exclusively connections to a ground wire or exclusively connections to a signal wire on both sides of an electrically conductive disk arranged between two slip ring pairs.
- FIG. 1 shows a data cable (4, 5) in a schematic view.
- the data cable (4, 5) comprises a cable sheath (11) and a base potential conductor (10) in the form of a sheath, which together include a plurality of data wire pairs (6, 7, 8, 9).
- Each of the data wire pairs includes a ground wire (6M, 7M, 8M, 9M) and a signal wire (6S, 7S, 8S, 9S).
- Each of the data wire pairs (6, 7, 8, 9) may optionally be enclosed by an additional base potential conductor in the form of a pair of sheaths.
- FIG. 2 shows in the oblique image a first slip ring (21) and a second slip ring (21 '), which are arranged adjacent to each other in the direction of the axis of rotation (A).
- Each of the slip rings (21, 21 ') has on its lateral surface a groove, which here according to a preferred embodiment has a triangular or trapezoidal cross-sectional shape.
- Each slip ring (21, 21 ') is assigned a sanding arm (20, 20').
- a first grinding arm (20) and a first slip ring (21) form a first transmission member (19).
- a second grinding arm (20 ') and a second slip ring (21') form a second transmission member (19 ').
- each grinding arm (20, 20 ') is fork-shaped, wherein the free web ends on both sides of the axis of rotation (A) tangentially to the associated slip ring (21, 21') are resiliently applied and in particular into the groove on the lateral surface intervention.
- a sanding arm (20, 20 ') may have only one free end.
- any other contact geometries for the sanding arm (20, 20 ') and the corresponding slip ring (21, 21') are possible.
- Two juxtaposed sanding arms (20, 20 ') form a sanding arm pair (22).
- Two adjacently disposed slip rings (21, 21 ') form a slip ring pair (22').
- an electrically conductive disc (30A) is arranged in the direction of the rotation axis (A) adjacent to the slip ring pair (22 ').
- the conductive disc (30A) has a significantly greater extent towards the center (A) of the slip ring carrier (3) than the slip rings (21, 21 ').
- the disc (30A) covered preferably the entire cross-sectional area of the slip ring carrier (3), as far as no passage for the passage of the data cable (5) or a data wire pair is required.
- the electrically conductive disk (30A) may thus preferably have a completely closed surface.
- one or more openings (31) may be provided in the electrically conductive disk (30A) whose diameter is preferably adapted to the size of the data cable (5) or its data wire pairs (6, 7, 8, 9).
- the number and arrangement of the openings (31) may be chosen differently for each electrically conductive disk (30A-30F) and, for example, on the number and thickness of the data wire pairs (6, 7, 8, 9) and base potential conductors to be passed through (10, 10 ') be tuned (see the following explanation and FIG. 3 ).
- a plurality of openings (31) or passages are provided on an electrically conductive disk (30A-30F), they can be arranged, for example, such that a mass or moment compensation between the data conductors guided inside the slip ring carrier (3). Pairing (6, 7, 8, 9) is achieved.
- FIG. 3 shows a preferred embodiment of the high frequency Schleifringübertragers (1) in cross section.
- This has on the one hand a brush holder (2), of which in FIG. 3
- a first data cable (4) which in the example shown has four data wire pairs (6, 7, 8, 9), is connected to the brush carrier (FIG. 2), or its grinding arms (20, 20 ', 20 ") connected.
- the high-frequency slip ring transmitter (1) further comprises a slip ring carrier (3) on which a corresponding slip ring (21, 21 ', 21 ") is arranged for each grinding arm (20, 20', 20").
- the slip ring carrier (3) or its slip ring (21, 21 ', 21 ") are connected to a second data cable (5), which also includes four data wire pairs (6, 7, 8, 9).
- each data wire pair (6, 7, 8, 9) on the high-frequency slip ring transmitter (1) is an associated transfer member pair, or respectively a pair of sanding arm (22, 23, 24, 25) and a to corresponding slip ring pair (22 ', 23', 24 ', 25') is provided.
- a respective first grinding jib (20) and a second grinding jib (20 ') are included within each pair of grinding jibs (22, 23, 24, 25) and a second grinding jib (20 '), on the one hand with a ground wire (6M, 7M, 8M, 9M) and on the other hand are connected to a signal wire (6S, 7S, 8S, 9S).
- each slip ring pair (22 ', 23', 24 ', 25') each contain a first slip ring (21) and a second slip ring (21 '), which also on the one hand with a ground wire (6M, 7M, 8M, 9M) and on the other hand to a signal wire (6S, 7S, 8S, 9S) are connected.
- a slip ring (3) In the axial direction (A) outside the entirety of the slip ring pairs (22 ', 23', 24 ', 25') a slip ring (3) a third slip ring (21 ") is arranged on the slip ring carrier (3), which with a corresponding third grinding arm (20". ) on the brush holder (2) corresponds. Both together form a third Transmission member.
- the third transfer member is preferably arranged on that side of the brush holder (2) or slip ring carrier (3) to which the respective data cable (4, 5) is supplied.
- the sanding arm pairs (22, 23, 24, 25) and the slip ring pairs (22 ', 23', 24 ', 25') are arranged adjacent to one another in the direction of the axis of rotation (A).
- an electrically conductive disc (30A, 30B, 30C, 30D, 30E) is arranged on both sides of each slip ring pair (22 ', 23', 24 ', 25').
- an electrically conductive disk (30E, 30F) is preferably arranged on both sides of the third slip ring (21 ").
- all electrically conductive disks (30A to 30E) are electrically connected to the base potential conductor (10) of the second data cable (5), which comprises the entirety of the data wire pairs (6, 7, 8, 9) in FIG This data cable (5) sheathed (outer base potential conductor / common base potential conductor).
- the connection between the discs (30A-30F) can be made by any thin electrical conductor, in particular by an electrical wire line (cable, in FIG. 3) guided in the slip ring body (3) FIG. 3 without reference).
- each data wire pair (6, 7, 8, 9) of the second data cable (5) may comprise an additional base potential conductor (10 '), preferably the Data wire pair (6, 7, 8, 9) sheathed separately (inner base potential conductor / pair base potential conductor).
- one such additional base potential conductor (10 ') may be connected to one of the electrically conductive disks (30A to 30D), in particular to the disk which, in addition to the slip ring pair (22) belonging to the respective data wire pair ', 23', 24 ', 25') is arranged.
- the remaining conductive disks (30E, 30F) are preferably connected to the outer base potential conductor (10).
- an additional insulator ring (26) is arranged next to each slip ring (21, 21 ', 21 ") .
- the insulator ring (26) increases the distance to the next electrically conductive element (slip ring / disk) in the axial direction and stretches or thus lengthens the field lines, thereby reducing the effects of interference between the data wire pairs and transmission element pairs, and may provide an air gap as an alternative to an insulator ring (26).
- each slip ring 21, 21 ', 21 .
- the slip rings (21, 21 ', 22'), as well as electrically conductive discs (30A to 30E) and the insulator rings (26) each have a uniform axial pitch, i. a uniform placement distance to each adjacent element.
- the uniform pitch can be, for example, 3 mm.
- the slip rings (21, 21 ', 21 "), the insulator rings (26) and the electrically conductive discs (30A-30F) preferably have a uniform axial thickness, for example, this uniform thickness may be about 2 mm.
- a particular advantage of the high-frequency Schleifringübertragers according to the present disclosure is therefore that it can be arranged with a slip ring transformer for power currents on a common slip ring carrier (3).
- the thickness of an electrically conductive disc (30A to 30F) is preferably at least 1 mm, even if a non-uniform axial pitch or a uniform or non-uniform thickness is used, which deviates from the above-mentioned dimensions. It has been shown that crosstalk of signals with frequencies above 100 MHz between adjacent slip ring pairs can only be prevented so far from the slice thickness of 1 mm that interference with the data transmission can no longer be expected.
- the electrically conductive disc (30A-30F) may consist of several layered layers. In the example of FIG. 3 Each of the electrically conductive disks (30A-30F) consists of two layers, each of these layers having a thickness of 1 mm. Alternatively, only a single layer with a thickness of 1 to 2 mm could be provided. Likewise, a higher number of layers could be provided.
- the slip ring carrier (3) preferably has the shape of a hollow cylinder, in whose cavity the respective Cores and base potential conductors (10, 10 ') of the data cable (5) are guided.
- the hollow cylinder is formed by a plurality of in the axial direction (A) one another pluggable and substantially disc-shaped carrier (27).
- these supports (27) are made of an insulating material and are designed to receive and concentrically guide an element that can be attached to the outer circumference.
- an electrical connection means may be provided, through which a data wire (6S - 9S, 6M - 9M) with a slip ring (21, 21 ', 21 ") is connectable.
- a data wire (6S - 9S, 6M - 9M) with a slip ring (21, 21 ', 21 ") is connectable.
- All electrical connections for the slip rings (21, 21 ', 21 ") are shown in the same radial plane, but they may alternatively be provided in different radial planes, In particular, an offset angle may be provided between adjacent data wires or between adjacent data wire pairs For example, be 60 °, 90 ° or 120 °.
- the electrically conductive disc (30A) is in FIG. 1 formed according to a first preferred embodiment in one piece and flat. It has a uniform thickness and an outer diameter which corresponds at least to the outer diameter of a slip ring (21, 21 '). It also has an inner diameter which is significantly smaller than the inner diameter of a slip ring (21, 21 ') and in particular corresponds approximately to the outer diameter of the data cable (5).
- FIG. 3 An alternative one-piece design of an electrically conductive disc is in arrangement according to FIG. 3 for the top disc (30A).
- This one-piece disc (30A) has on both end faces a shape corresponding to the shapes of the adjacent supports (27). It has, in particular on both sides contours, which allow a concentric alignment with a neighboring carrier (27).
- the one-piece disc (30A) further has an annular thickened outer region, the thickness of which preferably matches the uniform thickness of the other annular elements (slip rings, insulator rings 21, 21 ', 21 ", 26), and a thinner disk-shaped inner region Thickness preferably corresponds to the minimum thickness of 1 mm mentioned above.
- discs (30B - 30F) have an alternative two- or three-piece design.
- These multi-part disks (30B-30F) have, on the one hand, an outer ring whose inner diameter corresponds to the inner diameter of a slip ring (21, 21 ').
- the outer ring is formed in the example shown from two ring layers. He may alternatively have only one or more layers.
- the multi-part disks (30B-30F) furthermore each have a disc-shaped support (17 ') which is electrically conductively connected to the outer ring and which is formed from an electrically conductive material.
- the shape of the electrically conductive carrier (17 ') can be substantially the shape of the above-described carrier (27) made of an insulator material correspond.
- the electrically conductive carrier (27 ') preferably has a smaller inner diameter, which in particular is significantly smaller than the inner diameter of a slip ring (21, 21', 21 ") ) and / or a pair of data wires (6, 7, 8, 9), in contrast, the inner diameters of the carriers (27) made of the insulating material can be made significantly larger.
- the high-frequency slip ring transmitter (1) has exactly one brush holder (2) in which all the grinding arms (20, 20 ', 20 ") are arranged side by side in the direction of the axis of rotation (A) a radial distribution of the sanding arms or a redundant double arrangement of the sanding arms (20, 20 ', 20 ") on both sides of the slip ring carrier (3) significantly deteriorate the quality of transmission.
- the slip ring carrier (3) preferably has a modular design. It is particularly preferably designed as a plug-in system in which in the axial direction (A) a plurality of carriers (27, 27 ') can be arranged side by side, wherein each of these carriers (27, 27') has a centering collar for guiding on the respective next adjacent carrier (A). 27, 27 ') or on a one-piece electrically conductive disc (30A).
- the electrically conductive disks (30A-30B) are preferably made of a metal with good electrical conductivity. So particularly favorable, a steel alloy has proven. Depending on the purpose of the application, a copper alloy or an aluminum alloy may alternatively be used, with a layer thickness of more than 1 mm possibly being recommended for frequencies above 100 MHz.
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Description
Die Erfindung betrifft einen rotatorischen Hochfrequenz-Schleifringübertrager der passiven Bauart. Dieser weist eine Axialanordnung der Übertragungsglieder (Schleifring plus korrespondierender Schleifausleger) auf und ist zur verstärkungsfreien Übertragung von Datensignalen mit einer Frequenz ab 50 MHz, insbesondere mit 250 MHz, 500 MHz oder 1 GHz ausgelegt.The invention relates to a rotary high frequency slip ring transmitter of the passive type. This has an axial arrangement of the transmission elements (slip ring plus corresponding grinding arm) and is designed for gain-free transmission of data signals with a frequency from 50 MHz, in particular at 250 MHz, 500 MHz or 1 GHz.
In der Praxis sind verschiedene Schleifringübertrager für Datensignale bekannt.
Werden bei solchen bekannten Schleifringübertragern jedoch beispielsweise Ethernet-Signale mit einer Signalfrequenz von 100 MHz (Fast Ethernet), 250 MHz (Gigabit Ethernet) oder sogar 600 MHz oder mehr (10-Gigabit-Ethernet) angelegt, kann keine störungsfreie Datenübermittlung sichergestellt werden.However, if, for example, Ethernet signals with a signal frequency of 100 MHz (Fast Ethernet), 250 MHz (Gigabit Ethernet) or even 600 MHz or more (10 Gigabit Ethernet) are applied to such known slip ring transmitters, interference-free data transmission can not be ensured.
In der Praxis ist ein Schleifringübertrager bekannt, der auf seiner Mantelfläche mehrere Leiterbahnpaare aufweist. Jeweils zwischen zwei aneinander grenzenden Leiterbahnpaaren ist eine nach außen hin überstehende Schirmfläche vorgesehen, die nach innen hin mit einer sich in der Axialrichtung erstreckenden leitfähigen Rückwand verbunden sind. Derartige Schleifringübertrager sind für die Übertragung von Datensignalen mit bis zu 20 MHz gut einsetzbar. Die in Axialrichtung verlaufende Rückwand ist einstückig ausgebildet und gewährt eine freie flächige Elektronenbewegung an der Innenseite der Schleifbahnen. Ein Schleifringübertrager mit der genannten Bauart genügt nicht für eine sichere Vermeidung von Übersprechen zwischen den Datenleitungen. Außerdem hat ein solcher Übertrager Nachteile hinsichtlich der Montage. Der Anschluss der Leiterbahnen zum Zentrum des Schleifringträgers hin ist umständlich und bedarf einer separaten Isolierung. Ein Austausch von einzelnen Leiterbahnen infolge Verschleiß oder Verschmutzung ist nicht möglich.In practice, a slip ring is known, which has a plurality of conductor pairs on its lateral surface. In each case between two adjacent conductor track pairs, a projecting outwardly shielding surface is provided, which are connected inwardly with a extending in the axial direction of the conductive rear wall. Such slip ring transmitters are for the transmission of data signals up to 20 MHz well usable. The extending in the axial direction of the rear wall is integrally formed and ensures a free surface electron movement on the inside of Sliding tracks. A slip ring transformer of the type mentioned does not suffice for a reliable avoidance of crosstalk between the data lines. In addition, such a transformer has disadvantages in terms of assembly. The connection of the tracks to the center of the slip ring carrier out is cumbersome and requires a separate insulation. An exchange of individual tracks as a result of wear or contamination is not possible.
Es ist Aufgabe der vorliegenden Erfindung, einen verbesserten rotatorischen Schleifringübertrager aufzuzeigen, der für eine verstärkungsfreie Übertragung von Datensignalen ab 50 MHz bis zu 1 GHz geeignet ist und bevorzugt eine günstige Montage sowie Revisionsmöglichkeiten bietet. Die Erfindung löst diese Aufgabe mit den Merkmalen im Hauptanspruch.It is an object of the present invention to provide an improved rotary slip ring transmitter, which is suitable for a gain-free transmission of data signals from 50 MHz to 1 GHz and preferably provides a convenient installation and revision options. The invention solves this problem with the features in the main claim.
Der rotatorische Hochfrequenz-Schleifringübertrager gemäß der vorliegenden Offenbarung umfasst einen in Bezug auf die Rotationsachse außen liegenden Bürstenträger sowie einen innen liegenden Schleifringträger. Der Schleifringträger hat die Grundform eines Hohlzylinders. Bürstenträger und Schleifringträger sind relativ zueinander und in Bezug auf die Rotationsachse drehbar gelagert. An dem Schleifringübertrager sind mehrere Übertragungsglieder angeordnet, wobei ein Übertragungsglied jeweils aus einem Schleifringausleger am Bürstenträger und einem in gleicher Axialhöhe angeordneten korrespondierenden Schleifring am Schleifringträger gebildet ist. Der Schleifringausleger ist mit zumindest einer Kontaktstelle am korrespondierenden Schleifring angelegt, um einen elektrischen Strom in direkten Körperkontakt zu übertragen.The rotary high frequency slip ring transmitter according to the present disclosure comprises a brush carrier external to the rotation axis and an inside slip ring carrier. The slip ring carrier has the basic shape of a hollow cylinder. Brush holder and slip ring carrier are rotatably mounted relative to each other and with respect to the axis of rotation. At the slip ring transformer a plurality of transmission members are arranged, wherein a transmission member is formed in each case from a slip ring arm on the brush holder and a arranged at the same axial height corresponding slip ring on slip ring carrier. The slip ring boom is with at least one contact point on corresponding slip ring applied to transmit an electrical current in direct physical contact.
Die Schleifausleger an dem Bürstenträger sind mit Datenadern eines ersten Datenkabels verbunden und die mehreren Schleifringe am Schleifringträger sind ebenfalls mit Datenadern eines zweiten Datenkabels verbunden. Jedes dieser Datenkabel weist mindestens zwei Datenader-Paare auf, die jeweils eine Masse-Ader und eine Signal-Ader umfassen, sowie zusätzlich mindestens einen Basis-Potentialleiter, der bevorzugt als Ummantelung aller Datenader-Paare ausgebildet ist. Die Datenkabel können lose aus dem Schleifringübertrager herausgeführt sein. Alternativ kann am Bürstenträger und/oder am Schleifringträger eine Steckbuchse mit einer üblichen Belegung angeordnet sein.The sanding arms on the brush carrier are connected to data cores of a first data cable, and the plurality of slip rings on the slip ring carrier are also connected to data cores of a second data cable. Each of these data cables has at least two pairs of data wires, each comprising a ground wire and a signal wire, and additionally at least one base potential conductor, which is preferably designed as a sheath of all data wire pairs. The data cables can be loosely led out of the slip ring transformer. Alternatively it can be arranged with a conventional occupancy on the brush holder and / or slip ring carrier a socket.
An dem Schleifringträger sind mehrere erste und zweite Schleifringe und am Bürstenträger sind mehrere erste und zweite Schleifausleger vorhanden, wobei jeweils ein erster und ein zweiter Schleifring bzw. ein erster und ein zweiter Schleifausleger ein Paar bilden. Diese Paare sind in Richtung der Rotationsachse nebeneinander angeordnet, wobei in jedem Paar einer der Schleifringe mit einer Masse-Ader und der andere mit einer Signal-Ader aus einem zusammengehörigen Datenader-Paar verbunden sind.There are a plurality of first and second slip rings on the slip ring carrier, and a plurality of first and second grinding jibs are provided on the brush carrier, with a first and a second slip ring and a first and a second grinding jig forming a pair, respectively. These pairs are juxtaposed in the direction of the axis of rotation, in each pair one of the slip rings being connected to a ground wire and the other being connected to a signal wire from a pair of associated data wires.
Zu beiden Seiten eines jeden Schleifring-Paares ist eine elektrisch leitfähige Scheibe angeordnet. Diese ist mit einem Basis-Potentialleiter des zweiten Datenkabels verbunden. Ferner ist an dem Schleifringträger ein dritter Schleifring in Axialrichtung neben der Gesamtheit der Schleifring-Paare angeordnet, der mit einem entsprechenden dritten Schleifausleger am Bürstenträger in Kontakt steht. Bevorzugt sind auch zu beiden Seiten des dritten Schleifringes elektrisch leitfähige Scheiben angeordnet.On both sides of each slip ring pair an electrically conductive disc is arranged. This is connected to a base potential conductor of the second data cable connected. Further, a third slip ring is disposed on the slip ring carrier in the axial direction adjacent to the entirety of the slip ring pairs, which is in contact with a corresponding third grinding arm on the brush holder. Preferably, electrically conductive disks are also arranged on both sides of the third slip ring.
Der dritte Schleifausleger ist mit einem Basis-Potentialleiter des ersten Datenkabels verbunden. Weiterhin sind alle elektrisch leitfähigen Scheiben mit dem Basis-Potentialleiter des zweiten Datenkabels elektrisch leitend verbunden.The third grinding arm is connected to a base potential conductor of the first data cable. Furthermore, all electrically conductive disks are electrically conductively connected to the base potential conductor of the second data cable.
Die elektrisch leitfähigen Scheiben erstrecken sich deutlich weiter zum Zentrum des Schleifringträgers hin als die Schleifringe. Bevorzugt bedecken die elektrisch leitfähigen Scheiben die gesamte freie Querschnittsfläche innerhalb des Schleifringträgers sowie in Überlappung mit den Schleifringen. Es können in den Scheiben Durchgänge (Öffnungen) vorgesehen werden, durch die das zweite Datenkabel und/oder ein oder mehrere Datenader-Paare hindurch verlegbar sind. Derartige Durchgänge können beispielsweise konzentrisch zur Drehachse angeordnet sein.The electrically conductive discs extend much farther towards the center of the slip ring carrier than the slip rings. Preferably, the electrically conductive discs cover the entire free cross-sectional area within the slip ring carrier and in overlap with the slip rings. Passages (openings) may be provided in the disks through which the second data cable and / or one or more data wire pairs can be routed. Such passages may for example be arranged concentrically to the axis of rotation.
Es wurde durch Tests ermittelt, dass das Vorsehen von elektrisch leitfähigen Scheiben mit maximaler Erstreckung in das Zentrum des Schleifringträgers einen deutlich besseren Schutz gegen das Übersprechen von hochfrequenten Signalen bringt, als das Anordnen von Schirmflächen, die mit einer sich in Axialrichtung erstreckenden leitfähigen Rückwand verbunden sind.It has been determined by tests that the provision of electrically conductive disks with maximum extension into the center of the slip ring carrier provides a much better protection against the crosstalk of high frequency signals, than the arrangement of shielding surfaces are connected to an axially extending conductive rear wall.
Gemäß einer bevorzugten Weiterbildung des Hochfrequenz-Schleifringübertragers werden die ersten und zweiten Schleifringe innerhalb eines Paares in alternierender Paar-Abfolge der Masse-Ader bzw. Signal-Ader eines zugehörigen Datenader-Paares verschaltet, d.h. in der Axialrichtung gemäß dem Schema Masse - Signal | Signal - Masse | Masse - Signal usw. oder umgekehrt. Mit anderen Worten ist die Anschlussreihenfolge derart, dass zu beiden Seiten einer zwischen zwei Schleifring-Paaren angeordneten elektrisch leitfähigen Scheibe jeweils ausschließlich Verbindungen zu einer Masse-Ader oder ausschließlich Verbindungen zu einer Signal-Ader vorliegen.According to a preferred embodiment of the high-frequency slip ring transmitter, the first and second slip rings are interconnected within a pair in an alternating pair sequence of the ground wire or signal wire of an associated data wire pair, i. in the axial direction according to the scheme earth - signal | Signal - mass | Mass - signal etc. or vice versa. In other words, the connection order is such that there are exclusively connections to a ground wire or exclusively connections to a signal wire on both sides of an electrically conductive disk arranged between two slip ring pairs.
In den Unteransprüchen, der nachfolgenden Beschreibung sowie den beigefügten Zeichnungen sind weitere vorteilhafte Ausbildungen der Erfindung angegeben.In the subclaims, the following description and the accompanying drawings further advantageous embodiments of the invention are given.
Die Erfindung ist in den Zeichnungen beispielhaft und schematisch dargestellt. Es zeigen:
- Figur 1:
- Eine Schrägbilddarstellung eines Datenkabels zur Verwendung in dem Hochfrequenz-Schleifringübertrager;
- Figur 2:
- eine Explosionsdarstellung eines Übertragungsglied-Paares und einer in Axialrichtung daneben angeordneten elektrisch leitfähigen Scheibe;
- Figur 3:
- eine Querschnittdarstellung des Hochfrequenz-Ethernet-Schleifringübertragers in einer bevorzugten Ausführungsform.
- FIG. 1:
- An oblique view of a data cable for use in the high frequency slip ring transmitter;
- FIG. 2:
- an exploded view of a transmission member pair and an axially adjacent electrically conductive disc;
- FIG. 3:
- a cross-sectional view of the high-frequency Ethernet Schleifringübertragers in a preferred embodiment.
Jeder der Schleifringe (21, 21') weist auf seiner Mantelfläche eine Nut auf, die hier gemäß einer bevorzugten Ausführungsvariante eine dreieckige oder trapezförmige Querschnittsform hat.Each of the slip rings (21, 21 ') has on its lateral surface a groove, which here according to a preferred embodiment has a triangular or trapezoidal cross-sectional shape.
Jedem Schleifring (21, 21') ist ein Schleifausleger (20, 20') zugeordnet. Ein erster Schleifausleger (20) und ein erster Schleifring (21) bilden ein erstes Übertragungsglied (19). Ein zweiter Schleifausleger (20') und ein zweiter Schleifring (21') bilden ein zweites Übertragungsglied (19').Each slip ring (21, 21 ') is assigned a sanding arm (20, 20'). A first grinding arm (20) and a first slip ring (21) form a first transmission member (19). A second grinding arm (20 ') and a second slip ring (21') form a second transmission member (19 ').
In dem gezeigten Beispiel ist jeder Schleifausleger (20, 20') gabelförmig ausgebildet, wobei die freien Stegenden zu beiden Seiten der Drehachse (A) tangential an den zugehörigen Schleifring (21, 21') federnd angelegt sind und insbesondere in die Nut auf der Mantelfläche eingreifen. Alternativ kann ein Schleifausleger (20, 20') lediglich ein freies Ende aufweisen. Ferner sind beliebige andere Kontakt-Geometrien für den Schleifausleger (20, 20') und den korrespondierenden Schleifring (21, 21') möglich.In the example shown, each grinding arm (20, 20 ') is fork-shaped, wherein the free web ends on both sides of the axis of rotation (A) tangentially to the associated slip ring (21, 21') are resiliently applied and in particular into the groove on the lateral surface intervention. Alternatively, a sanding arm (20, 20 ') may have only one free end. Furthermore, any other contact geometries for the sanding arm (20, 20 ') and the corresponding slip ring (21, 21') are possible.
Zwei nebeneinander angeordnete Schleifausleger (20, 20') bilden ein Schleifausleger-Paar (22). Zwei nebeneinander angeordnete Schleifringe (21, 21') bilden ein Schleifring-Paar (22'). In der Richtung der Drehachse (A) neben dem Schleifring-Paar (22') ist eine elektrisch leitfähige Scheibe (30A) angeordnet. Die leitfähige Scheibe (30A) weist eine deutlich größere Erstreckung zum Zentrum (A) des Schleifringträgers (3) hin auf als die Schleifringe (21, 21'). Die Scheibe (30A) bedeckt bevorzugt den gesamten Querschnitts-bereich des Schleifringträgers (3), soweit kein Durchgang für die Hindurchführung des Datenkabels (5) oder eines Datenader-Paares erforderlich ist. Die elektrisch leitfähige Scheibe (30A) kann somit bevorzugt eine vollständig geschlossene Oberfläche aufweisen. Alternativ können in der elektrisch leitfähigen Scheibe (30A) eine oder mehrere Öffnungen (31) vorgesehen sein, deren Durchmesser bevorzugt an die Größe des Datenkabels (5) oder seiner Datenader-Paare (6, 7, 8, 9) angepasst ist. Die Anzahl und Anordnung der Öffnungen (31) kann für jede elektrisch leitfähige Scheibe (30A - 30F) unterschiedlich gewählt sein und beispielsweise auf die Anzahl und Dicke der hindurch zu führenden Datenader-Paare (6, 7, 8, 9) und Basis-Potentialleiter (10, 10') abgestimmt sein (vergleiche nachfolgende Erläuterung und
Der Hochfrequenz-Schleifringübertrager (1) umfasst ferner einen Schleifringträger (3) an dem zu jedem Schleifausleger (20, 20', 20") ein korrespondierender Schleifring (21, 21', 21") angeordnet ist. Der Schleifringträger (3) bzw. dessen Schleifring (21, 21', 21") sind mit einem zweiten Datenkabel (5) verbunden, das ebenfalls vier Datenader-Paare (6, 7, 8, 9) beinhaltet.The high-frequency slip ring transmitter (1) further comprises a slip ring carrier (3) on which a corresponding slip ring (21, 21 ', 21 ") is arranged for each grinding arm (20, 20', 20"). The slip ring carrier (3) or its slip ring (21, 21 ', 21 ") are connected to a second data cable (5), which also includes four data wire pairs (6, 7, 8, 9).
An dem Hochfrequenz-Schleifringübertrager (1) ist mit anderen Worten für jedes Datenader-Paar (6, 7, 8, 9) ein zugehöriges Übertragungsglied-Paar, bzw. jeweils ein Schleifausleger-Paar (22, 23, 24, 25) sowie ein dazu korrespondierendes Schleifring-Paar (22', 23', 24', 25') vorgesehen. Innerhalb jedes Schleifausleger-Paares (22, 23, 24, 25) ist je ein erster Schleifausleger (20) und ein zweiter Schleifausleger (20') enthalten, die einerseits mit einer Masse-Ader (6M, 7M, 8M, 9M) und andererseits mit einer Signal-Ader (6S, 7S, 8S, 9S) verbunden sind. Ebenso ist in jedem Schleifring-Paar (22', 23', 24', 25') je ein erster Schleifring (21) und ein zweiter Schleifring (21') enthalten, die ebenfalls einerseits mit einer Masse-Ader (6M, 7M, 8M, 9M) und andererseits mit einer Signal-Ader (6S, 7S, 8S, 9S) verbunden sind.In other words, for each data wire pair (6, 7, 8, 9) on the high-frequency slip ring transmitter (1) is an associated transfer member pair, or respectively a pair of sanding arm (22, 23, 24, 25) and a to corresponding slip ring pair (22 ', 23', 24 ', 25') is provided. Within each pair of grinding jibs (22, 23, 24, 25) there is included a respective first grinding jib (20) and a second grinding jib (20 '), on the one hand with a ground wire (6M, 7M, 8M, 9M) and on the other hand are connected to a signal wire (6S, 7S, 8S, 9S). Likewise, in each slip ring pair (22 ', 23', 24 ', 25') each contain a first slip ring (21) and a second slip ring (21 '), which also on the one hand with a ground wire (6M, 7M, 8M, 9M) and on the other hand to a signal wire (6S, 7S, 8S, 9S) are connected.
In der Axialrichtung (A) außerhalb der Gesamtheit der Schleifring-Paare (22', 23', 24', 25') ist am Schleifringträger (3) ein dritter Schleifring (21") angeordnet, der mit einem entsprechenden dritten Schleifausleger (20") am Bürstenträger (2) korrespondiert. Beide gemeinsam bilden ein drittes Übertragungsglied. Zur Vereinfachung der Montage ist das dritte Übertragungsglied bevorzug auf derjenigen Seite des Bürstenträgers (2) bzw. Schleifringträgers (3) angeordnet, an dem das jeweilige Datenkabel (4, 5) zugeführt ist.In the axial direction (A) outside the entirety of the slip ring pairs (22 ', 23', 24 ', 25') a slip ring (3) a third slip ring (21 ") is arranged on the slip ring carrier (3), which with a corresponding third grinding arm (20". ) on the brush holder (2) corresponds. Both together form a third Transmission member. To simplify the assembly, the third transfer member is preferably arranged on that side of the brush holder (2) or slip ring carrier (3) to which the respective data cable (4, 5) is supplied.
Die Schleifausleger-Paare (22, 23, 24, 25) sowie die Schleifring-Paare (22', 23', 24', 25') sind in Richtung der Rotationsachse (A) zueinander benachbart angeordnet. Zu beiden Seiten eines jeden Schleifring-Paares (22', 23', 24', 25') ist eine elektrisch leitfähige Scheibe (30A, 30B, 30C, 30D, 30E) angeordnet. Ferner ist bevorzugt zu beiden Seiten des dritten Schleifringes (21") eine elektrisch leitfähige Scheibe (30E, 30F) angeordnet.The sanding arm pairs (22, 23, 24, 25) and the slip ring pairs (22 ', 23', 24 ', 25') are arranged adjacent to one another in the direction of the axis of rotation (A). On both sides of each slip ring pair (22 ', 23', 24 ', 25') an electrically conductive disc (30A, 30B, 30C, 30D, 30E) is arranged. Furthermore, an electrically conductive disk (30E, 30F) is preferably arranged on both sides of the third slip ring (21 ").
Gemäß einer ersten bevorzugten Ausführungsvariante sind alle elektrisch leitfähigen Scheiben (30A bis 30E) mit dem Basis-Potentialleiter (10) des zweiten Datenkabels (5) elektrisch leitend verbunden, der die Gesamtheit der Datenader-Paare (6, 7, 8, 9) in diesem Datenkabel (5) ummantelt (äußerer Basis-Potentialleiter / Sammel-Basis-Potentialleiter). Die Verbindung zwischen den Scheiben (30A - 30F) kann durch einen beliebigen dünnen elektrischen Leiter erfolgen, insbesondere durch eine in dem Schleifringkörper (3) geführte elektrische Drahtleitung (Kabel, in
Gemäß einer alternativen Ausführungsform (nicht dargestellt) kann jedes Datenader-Paar (6, 7, 8, 9) des zweiten Datenkabels (5) einen zusätzlichen Basis-Potentialleiter (10') umfassen der bevorzugt das Datenader-Paar (6, 7, 8, 9) separat ummantelt (innerer Basis-Potentialleiter / Paar-Basis-Potentialleiter). In einem solchen Fall kann jeweils ein solcher zusätzlicher Basis-Potentialleiter (10') mit einer der elektrisch leitfähigen Scheiben (30A bis 30D) verbunden sein, insbesondere mit der Scheibe, die neben dem zu dem jeweiligen Datenader-Paar gehörigen Schleifring-Paar (22', 23', 24', 25') angeordnet ist. Die übrigen leitfähigen Scheiben (30E, 30F) sind bevorzugt mit dem äußeren Basis-Potentialleiter (10) verbunden.According to an alternative embodiment (not shown), each data wire pair (6, 7, 8, 9) of the second data cable (5) may comprise an additional base potential conductor (10 '), preferably the Data wire pair (6, 7, 8, 9) sheathed separately (inner base potential conductor / pair base potential conductor). In such a case, in each case one such additional base potential conductor (10 ') may be connected to one of the electrically conductive disks (30A to 30D), in particular to the disk which, in addition to the slip ring pair (22) belonging to the respective data wire pair ', 23', 24 ', 25') is arranged. The remaining conductive disks (30E, 30F) are preferably connected to the outer base potential conductor (10).
In der Axialrichtung (A) wechseln sich in der Axialrichtung aufeinander folgende Übertragungsglieder-Paare (22, 22', 23, 23', 24, 24', 25, 25') in der Beschaltungsfolge ab. D.h. jeweils an ein Paar (22, 22', 24, 24') mit der Beschaltungsfolge "erst Signal-Ader dann Masse-Ader" wird ein Paar (23, 23', 25, 25') mit der umgekehrten Beschaltungsfolge "erst Masse-Ader dann Signal-Ader" anschließen usw.In the axial direction (A) successive transfer element pairs (22, 22 ', 23, 23', 24, 24 ', 25, 25') alternate in the axial direction in the wiring sequence. That in each case to a pair (22, 22 ', 24, 24') with the wiring sequence "first signal wire then ground wire" is a pair (23, 23 ', 25, 25') with the reverse wiring sequence "mass only" Wire then signal wire "etc.
Zu jeder Seite einer zwischen zwei Paaren eingeschlossene elektrisch leitfähigen Scheibe (30B, 30C, 30D) sind somit entweder ausschließlich Verbindungen zu einer Masse-Ader (6M, 7M, 8M, 9M) oder ausschließlich zu einer Signal-Ader (7S, 8S) gelegen. Gerade bei Ethernet-Datensignalen treten häufig in mehreren Datenader-Paaren gleichzeitige und gleisinnige Stromflanken auf. Die oben genannte Anordnungsfolge hat den Vorteil, dass sich derartige gegengleiche Stromverläufe zu beiden Seiten einer elektrisch leitfähigen Scheibe (30B, 30C, 30D) in der Feldwirkung nahezu aufheben und so einander weniger beeinflussen.Thus, either exclusively connections to a ground wire (6M, 7M, 8M, 9M) or exclusively to a signal wire (7S, 8S) are located on each side of an electrically conductive disk (30B, 30C, 30D) enclosed between two pairs , Especially in the case of Ethernet data signals, simultaneous and track-like current edges often occur in several pairs of data wires. The abovementioned arrangement sequence has the advantage that such opposing current profiles on both sides of an electrically conductive pane (30B, 30C, 30D) almost cancel each other out in the field effect and thus influence each other less.
In dem Beispiel von
Das Vorsehen der zusätzlichen Isolator-Scheiben zu beiden Seiten eines jeden Schleifrings (21, 21', 21") führt besonders bei Signalfrequenzen ab 100 MHz zu einer deutlichen Verbesserung des Signal-zu-Rauschen-Verhältnisses im übertragenen Ethernet-Signal.The provision of the additional isolator disks on both sides of each slip ring (21, 21 ', 21 ") leads to a significant improvement in the signal-to-noise ratio in the transmitted Ethernet signal, especially at signal frequencies above 100 MHz.
Gemäß einer bevorzugten Ausführungsvariante haben die Schleifringe (21, 21', 22'), sowie elektrisch leitfähigen Scheiben (30A bis 30E) und die Isolator-Ringe (26) jeweils einen einheitlichen axialen Teilungsabstand, d.h. einen einheitlichen Platzierungsabstand zum jeweils benachbarten Element. Der einheitliche Teilungsabstand kann beispielsweise 3 mm betragen. Ferner haben die Schleifringe (21, 21', 21"), die Isolator-Ringe (26) und die elektrisch leitfähigen Scheiben (30A - 30F) bevorzugt eine einheitliche axiale Dicke. Diese einheitliche Dicke kann beispielsweise etwa 2 mm betragen.According to a preferred embodiment, the slip rings (21, 21 ', 22'), as well as electrically conductive discs (30A to 30E) and the insulator rings (26) each have a uniform axial pitch, i. a uniform placement distance to each adjacent element. The uniform pitch can be, for example, 3 mm. Further, the slip rings (21, 21 ', 21 "), the insulator rings (26) and the electrically conductive discs (30A-30F) preferably have a uniform axial thickness, for example, this uniform thickness may be about 2 mm.
Durch eine solche regelmäßige Teilung wird eine modulare Anordnung geschaffen, die beispielsweise für in Axialrichtung noch weiter außen liegende Übertragungsglieder für die Übertragung von Leistungsströmen weiter verwendet werden kann. Für solche Leistungsströme kann eine deutlich engere Packungsdichte vorgesehen werden. So können insbesondere an jeder Teilungsposition in Axialrichtung nebeneinander Übertragungsglieder vorgesehen sein.By such a regular division, a modular arrangement is created, for example, for axially outward transmission elements for the transmission of Power currents can continue to be used. For such power currents, a much narrower packing density can be provided. Thus, in particular at each division position in the axial direction side by side transmission members may be provided.
Ein besonderer Vorteil des Hochfrequenz-Schleifringübertragers gemäß der vorliegenden Offenbarung ist also, dass er mit einem Schleifringübertrager für Leistungsströme auf einem gemeinsamen Schleifringträger (3) angeordnet sein kann.A particular advantage of the high-frequency Schleifringübertragers according to the present disclosure is therefore that it can be arranged with a slip ring transformer for power currents on a common slip ring carrier (3).
Die Dicke einer elektrisch leitfähigen Scheibe (30A bis 30F) beträgt bevorzugt mind. 1 mm, selbst wenn eine uneinheitliche axiale Teilung oder eine einheitliche oder nicht einheitliche Dicke genutzt wird, die von den oben genannten Maßen abweicht. Es hat sich gezeigt, dass erst ab der Scheibendicke von 1 mm ein Übersprechen von Signalen mit Frequenzen ab 100 MHz zwischen benachbarten Schleifring-Paaren so weit unterbunden werden kann, dass keine Beeinträchtigung der Datenübertragung mehr zu erwarten ist. Die elektrisch leitfähige Scheibe (30A - 30F) kann dabei aus mehreren geschichteten Lagen bestehen. In dem Beispiel von
Der Schleifringträger (3) weist bevorzugt die Form ein Hohlzylinders auf, in dessen Hohlraum die jeweiligen Adern und Basis-Potentialleiter (10, 10') des Datenkabels (5) geführt sind. In dem Beispiel von
Die elektrisch leitfähige Scheibe (30A) ist in
Eine alternative einteilige Ausführung einer elektrisch leitfähigen Scheibe ist bei Anordnung gemäß
Die einteilige Scheibe (30A) hat ferner einen ringförmigen verdicken Außenbereich, dessen Dicke bevorzugt mit der einheitlichen Dicke der anderen ringförmigen Elemente (Schleifringe, Isolator-Ringe, 21, 21', 21", 26) übereinstimmt, sowie einen dünneren scheibenförmigen Innenbereich, dessen Dicke bevorzugt der oben genannten Mindestdicke von 1mm entspricht.The one-piece disc (30A) further has an annular thickened outer region, the thickness of which preferably matches the uniform thickness of the other annular elements (slip rings, insulator rings 21, 21 ', 21 ", 26), and a thinner disk-shaped inner region Thickness preferably corresponds to the minimum thickness of 1 mm mentioned above.
Die anderen in
Gemäß einer bevorzugten Ausbildung weist der Hochfrequenz-Schleifringübertrager (1) genau einen Bürstenträger (2) auf, in dem alle Schleifausleger (20, 20', 20") in Richtung der Drehachse (A) nebeneinander angeordnet sind. Es hat sich gezeigt, dass eine radiale Verteilung der Schleifausleger oder eine redundante Doppel-Anordnung der Schleifausleger (20, 20', 20") zu beiden Seiten des Schleifringträgers (3) die Übertragungsgüte deutlich verschlechtern.According to a preferred embodiment, the high-frequency slip ring transmitter (1) has exactly one brush holder (2) in which all the grinding arms (20, 20 ', 20 ") are arranged side by side in the direction of the axis of rotation (A) a radial distribution of the sanding arms or a redundant double arrangement of the sanding arms (20, 20 ', 20 ") on both sides of the slip ring carrier (3) significantly deteriorate the quality of transmission.
Wie aus
Abwandlungen der offenbarten Erfindung sind in verschiedener Weise möglich. Insbesondere können alle zu den jeweiligen Ausführungsbeispielen gezeigten, beschriebenen oder beanspruchten Merkmale in beliebiger Weise miteinander kombiniert, gegeneinander ersetzt, ergänzt oder weggelassen werden.Variations of the disclosed invention are possible in various ways. In particular, all features shown, described or claimed with respect to the respective embodiments can be combined with one another in any desired manner, replaced, supplemented or omitted from one another.
Die elektrisch leitfähigen Scheiben (30A - 30B) bestehen bevorzugt aus einem Metall mit guter elektrischer Leitfähigkeit. Also besonders günstig hat sich eine Stahl-Legierung erwiesen. Je nach Einsatzweck können alternativ eine Kupfer-Legierung oder eine AluminiumLegierung verwendet werden, wobei für Frequenzen über 100 MHz etwaig eine Schichtdicke von mehr als 1 mm zu empfehlen ist.The electrically conductive disks (30A-30B) are preferably made of a metal with good electrical conductivity. So particularly favorable, a steel alloy has proven. Depending on the purpose of the application, a copper alloy or an aluminum alloy may alternatively be used, with a layer thickness of more than 1 mm possibly being recommended for frequencies above 100 MHz.
- 11
- SchleifringübertragerA slip ring transmission
- 22
- Bürstenträgerbrush carrier
- 33
- SchleifringträgerSlip ring carrier
- 44
- Datenkabeldata cable
- 55
- Datenkabeldata cable
- 66
- Datenader-PaarData Core pair
- 6M6M
- Masse-AderGround wire
- 6S6S
- Signal-AderSignal wire
- 77
- Datenader-PaarData Core pair
- 7M7M
- Masse-AderGround wire
- 7S7S
- Signal-AderSignal wire
- 88th
- Datenader-PaarData Core pair
- 8M8M
- Masse-AderGround wire
- 8S8S
- Signal-AderSignal wire
- 99
- Datenader-PaarData Core pair
- 9M9M
- Masse-AderGround wire
- 9S9S
- Signal-AderSignal wire
- 1010
- (äußerer) Basis-Potentialleiter / Sammel-Basis-Potentialleiter(outer) base potential conductor / common base potential conductor
- 10'10 '
- (innerer) Basis-Potentialleiter / Einzel-Basis-Potenzialleiter(inner) base potential conductor / single-base potential conductor
- 1111
- Kabelmantelcable sheath
- 1919
- Übertragungsgliedtransmission member
- 19'19 '
- Übertragungsgliedtransmission member
- 2020
- Schleifauslegergrinding arm
- 20'20 '
- Schleifauslegergrinding arm
- 20"20 "
- Schleifauslegergrinding arm
- 2121
- Schleifringslip ring
- 21'21 '
- Schleifringslip ring
- 21"21 "
- Schleifringslip ring
- 2222
- Schleifausleger-PaarGrinding arm pair
- 22'22 '
- Schleifring-PaarSlip ring pair
- 2323
- Schleifausleger-PaarGrinding arm pair
- 23'23 '
- Schleifring-PaarSlip ring pair
- 2424
- Schleifausleger-PaarGrinding arm pair
- 24'24 '
- Schleifring-PaarSlip ring pair
- 2525
- Schleifausleger-PaarGrinding arm pair
- 25'25 '
- Schleifring-PaarSlip ring pair
- 2626
- Isolator-RingInsulator ring
- 2727
- Träger (Isolator)Carrier (insulator)
- 27'27 '
- Träger (Leiter)Carrier (ladder)
- 30A30A
- elektrisch leitfähige Scheibeelectrically conductive disc
- 30B30B
- elektrisch leitfähige Scheibeelectrically conductive disc
- 30C30C
- elektrisch leitfähige Scheibeelectrically conductive disc
- 30D30D
- elektrisch leitfähige Scheibeelectrically conductive disc
- 30E30E
- elektrisch leitfähige Scheibeelectrically conductive disc
- 3131
- Öffnung / DurchgangOpening / passage
- AA
- Achse / DrehachseAxis / axis of rotation
Claims (11)
- Rotary high-frequency slip ring transmitter with axial arrangement of the transmission elements (19, 19') for transmitting data signals,- the slip ring transmitter (1) comprising a brush carrier (2) and a slip ring carrier (3), which are mounted such that they can rotate relative to each other in accordance with an axis (A), and- in each case a wiper arm (20, 20') on the brush carrier (2) being in contact with a corresponding slip ring (21, 21') on the slip ring carrier (21) in order to form a transmission element (19, 19'), and- the wiper arms (20, 20') each being connected to conductors of a first data cable (4), and the slip rings (21, 21') being connected to conductors of a second data cable (5), and- each of the data cables (4, 5) comprising two or more data wire pairs (6, 7, 8, 9) each having an earth wire (6M, 7M, 8M, 9M) and a signal wire (6S, 7S, 8S, 9S) and at least one base potential conductor (10),characterized in that- first and second slip rings (21, 21') and the corresponding wiper arms (20, 20') are each arranged beside one another in the axial direction to form pairs (21, 22, 23, 24, 22', 23', 24', 25') and are connected to an earth wire (6P) and a signal wire (6S) of an associated data wire pair (6);- in the axial direction, an electrically conductive disc (30A, 30B, 30C, 30D, 30E) is arranged on both sides of each slip ring pair (21, 22, 23, 24), and- a third slip ring (21") is arranged in the axial direction beside the entirety of the slip ring pairs (21, 22, 23, 24) and is in contact with a third wiper arm (20''), and- the third wiper arm (20") is connected to the base potential conductor (10) of the first data cable (4), and- the third slip ring (21") and all the electrically conductive discs (30A, 30B, 30C, 30D, 30E) are connected to the base potential conductor (10) of the second data cable (5).
- High-frequency slip ring transmitter according to Claim 1, characterized in that the first and second wiper arms (20, 20') and the first and second slip rings (21, 21') in adjacent pairs (22, 23, 24, 25, 22', 23', 24', 25') are each connected in such a way that, on both sides of an electrically conductive disc (30B, 30C, 30D), in each case there are only connections to an earth wire (6M, 7M, 8M, 9M) or in each case only connections to a signal wire (6S, 7S, 8S, 9S).
- High frequency slip ring transmitter according to either of Claims 1 and 2, characterized in that an isolator ring (26) is arranged in the axial direction beside each slip ring (21, 21', 21").
- High-frequency slip ring transmitter according to one of the preceding claims, characterized in that the slip rings (21, 21', 21") and the electrically conductive discs (30A - 30E) and possibly the isolator rings (26) are arranged with a uniform axial pitch relative to one another.
- High-frequency slip ring transmitter according to one of the preceding claims, characterized in that the slip rings (21, 21', 21") and the isolator rings (26) and possibly the electrically conductive discs (30A - 30E) have a uniform axial thickness.
- High-frequency slip ring transmitter according to one of the preceding claims, characterized in that the electrically conductive discs (30A - 30E) have an axial thickness of at least 1 millimetre.
- High-frequency slip ring transmitter according to one of the preceding claims, characterized in that one or more substantially annular disc-shaped carriers (27) which can be plugged on one another in the axial direction and are made of an insulating material are provided to receive and to concentrically guide the slip rings (21, 21', 21") and possibly the isolator discs (26) on the axis (A).
- High-frequency slip ring transmitter according to one of the preceding claims, characterized in that the electrically conductive discs (30A - 30E) have an outer diameter which corresponds at least to the outer diameter of a slip ring (21, 21', 21"), and an inner diameter which is considerably smaller than the inner diameter of a slip ring (21, 21', 21") and which in particular corresponds approximately to the outer diameter of the data cable (5).
- High-frequency slip ring transmitter according to one of the preceding claims, characterized in that an electrically conductive disc (30A - 30E) is formed from many parts and, in particular, has an outer ring, the inner diameter of which corresponds to the inner diameter of a slip ring (21, 21', 21"), and also a disc-shaped or annular disc-shaped carrier (17') electrically conductively connected to the outer ring and made of an electrically conductive material, wherein the inner diameter of an annular disc-shaped carrier (17') is considerably smaller than the inner diameter of a slip ring (21, 21', 21").
- High-frequency slip ring transmitter according to one of the preceding claims, characterized in that all the wiper arms (20, 20', 20") are arranged beside one another in the axial direction.
- High-frequency slip ring transmitter according to one of the preceding claims, characterized in that the slip ring carrier (3) has the basic shape of a hollow cylinder, wherein the wires of the data cable (5) are guided in its cavity.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202015105241.3U DE202015105241U1 (en) | 2015-10-05 | 2015-10-05 | RF Ethernet slip ring transmission |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3154134A1 EP3154134A1 (en) | 2017-04-12 |
EP3154134B1 true EP3154134B1 (en) | 2018-08-22 |
Family
ID=57047123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16192225.7A Not-in-force EP3154134B1 (en) | 2015-10-05 | 2016-10-04 | Slip ring assembly for high frequence ethernet connexion |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3154134B1 (en) |
DE (1) | DE202015105241U1 (en) |
ES (1) | ES2698356T3 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019005318A1 (en) * | 2019-07-30 | 2021-02-04 | Günther Zimmer | Rotary joint |
CN113612090B (en) * | 2021-07-23 | 2024-04-26 | 北京无线电测量研究所 | Cable winding and unwinding device |
CN114039257B (en) * | 2021-11-03 | 2023-06-09 | 中船九江精达科技股份有限公司 | Linear sliding transmission device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6767217B2 (en) | 2002-03-12 | 2004-07-27 | Peter E. Jacobson | Rotating electrical transfer components |
DE102008051671A1 (en) | 2008-10-15 | 2010-04-22 | Ltn Servotechnik Gmbh | Slip ring unit |
JP2012099376A (en) * | 2010-11-04 | 2012-05-24 | Nidec Servo Corp | Slip ring device |
WO2013030563A1 (en) | 2011-08-26 | 2013-03-07 | Overview Limited | Improved slip ring apparatus and method of manufacturing a slip ring |
-
2015
- 2015-10-05 DE DE202015105241.3U patent/DE202015105241U1/en active Active
-
2016
- 2016-10-04 EP EP16192225.7A patent/EP3154134B1/en not_active Not-in-force
- 2016-10-04 ES ES16192225T patent/ES2698356T3/en active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
EP3154134A1 (en) | 2017-04-12 |
ES2698356T3 (en) | 2019-02-04 |
DE202015105241U1 (en) | 2017-01-09 |
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