EP2525448B1 - Contact ring unit - Google Patents
Contact ring unit Download PDFInfo
- Publication number
- EP2525448B1 EP2525448B1 EP12001534.2A EP12001534A EP2525448B1 EP 2525448 B1 EP2525448 B1 EP 2525448B1 EP 12001534 A EP12001534 A EP 12001534A EP 2525448 B1 EP2525448 B1 EP 2525448B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slip ring
- holder
- components
- ring unit
- component group
- 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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- 238000005096 rolling process Methods 0.000 description 9
- 241000047428 Halter Species 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
Images
Classifications
-
- 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
- H01R39/38—Brush holders
- H01R39/385—Means for mechanical fixation of the brush holder
-
- 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
Definitions
- the invention relates to a slip ring unit for transmitting electrical currents between two relatively rotatable component groups, according to claim 1.
- Slip ring units usually consist, inter alia, of two component groups, namely a stator and a rotor.
- the stator often includes slip ring brushes, whereas the rotor usually has a series of slip rings.
- the slip ring brushes have sliding contact with the shell sides of the rotating slip rings.
- Such slip ring units are used in many technical fields to transmit electrical signals or electrical power from a stationary to a rotating electrical unit.
- the invention has for its object to provide a slip ring unit, which allows high reliability and at the same time a simple and economical production.
- the two component groups are rotatable relative to each other about an axis.
- the first component group for. Example, a stator, comprises at least one slip ring brush, which is attached to a holder which is mounted between two in the direction of the axis offset from each other arranged components (the components may be configured, for example, as a stator-side rings).
- the second component group, z. B a rotor has at least one slip ring.
- the holder and at least one of the components each have at least one active surface through which a positive connection is established between the holder and the at least one component. Due to the positive connection forces can be transmitted with a directional component parallel to the axis.
- electrical currents are to be understood as currents which are required for the transmission of electrical power but also currents which are designed as signals and serve only for the transmission of information.
- the slip ring unit is configured so that the holder and both said components each have at least one active surface through which between the holder and the two components in each case a positive connection is made.
- At least one of the components advantageously has an undercut and the holder comprises a projection, wherein the undercut and the projection have interlocking active surfaces and cooperate such that between the holder and the at least one component is made a positive connection by which forces one Direction component can be transferred parallel to the axis.
- the slip ring unit is configured such that both components have an undercut.
- the slip ring unit can be designed such that the cooperating active surfaces of the holder and of the component engage with an overlap in the circumferential direction. Alternatively or additionally, the slip ring unit can be configured such that the cooperating active surfaces mesh with one another in the radial direction.
- the slip ring unit can be designed so that axial tensile stresses can be introduced into the holder with the aid of the positive connection.
- the first component group can be rotatable relative to the second component group by means of a roller bearing and serve the component for axial securing of the rolling bearing and in particular be connected to the rolling bearing for this purpose.
- one of the components or both can be positively connected to an outer ring of a roller bearing for receiving axial forces.
- the slip ring unit can be configured so that these axial forces between the first group of components and the second group of components are transferable, wherein axial tensile forces in the holder can be generated by the axial forces by means of the positive connection.
- the first component group may comprise a housing element which serves as a positive radial securing of the positive connection between the holder and the at least one component.
- the housing element can radially surround the holder and the at least one component without play in the region of the positive connection.
- the housing element may be designed as a hollow cylinder or tubular.
- the housing element can be used as a positive radial securing of positive locking Connections serve on both components when the holder and both components each have at least one active surface, is made by the respective between the holder and the components a positive connection.
- the slip ring unit on several holders, wherein between the holders and the at least one component in each case a positive connection is made.
- the slip ring unit can have two holders, which are advantageously arranged offset by 180 ° about the axis (rotation axis).
- three holders can be arranged, which are advantageously arranged at an angular distance of 120 ° to each other.
- four holders can be arranged, which are arranged in particular at an angular distance of 90 ° to each other.
- the slip ring unit comprises a first group of components, which may be referred to as stator 1 and a second group of components, hereinafter referred rotor 2.
- the slip ring unit is used for transmitting electrical currents between the rotor 2 and the stator 1, wherein the rotor 2 and the stator 1 are arranged rotatable relative to each other about an axis A.
- the rotor 2 is mounted with respect to the stator 1 with bearings 3, which include an outer ring 3.1, an inner ring 3.2 and rolling elements 3.3 and a, in particular grinding, seal 3.4.
- the rolling bearing 3 is configured here as a deep groove ball bearing, so that therefore axial forces from the outer ring 3.1 to the inner ring 3.2 and vice versa are transferable.
- the rotor 2 comprises a shaft 2.1, which is configured in the present example as a hollow shaft. Radially outside the shaft 2.1 is initially a substantially tubular member 2.4, which may be made of aluminum, for example. Then further radially outward, a support tube 2.5 is arranged, which has recesses 2.51 running in the axial direction.
- each of the axially spaced-apart slip rings 2.2 is connected at its inner side with an electrical line, each along a recess 2.51 in the axial direction in the rotor. 2 is moved and leaves the rotor 2 through one of the grooves 2.11 at one axial end of the shaft 2.1.
- the stator 1 has four holders 1.3 made of an insulating material, here made of a plastic, wherein the holders 1.3 are each arranged offset by 90 ° along a circumferential line.
- the holder 1.3 have a substantially cuboid base body.
- slip ring brushes 1.2 are attached, which are assigned to the stator 1 and resiliently touch the slip rings 1.2.
- the slip ring brushes 1.2 are designed as a wire bundle.
- These slip ring brushes 1.2 are made with vias 1.33 (see FIGS. 2b, 2c ) In the main body of the holder 1.3 electrically connected to lines. In the FIGS. 2b, 2c
- the illustrations of the stator-side electrical lines were omitted.
- the holder 1.3 have projections 1.31, which are claw-like formed on the base body.
- the projections 1.31 have a substantially cylindrical basic shape, wherein the respective cylinder axes are aligned parallel to each other, or the projections are oriented 1.31 parallel to each other.
- the holder 1.3 is designed in one piece and was made of plastic by means of an injection molding process.
- Both the slip ring brushes 1.2 and the slip rings 2.2 are arranged to protect against environmental influences in the interior of a hollow cylindrical housing element 1.1.
- the interior of the stator is also limited by two components, here two rings 1.4, 1.5.
- These rings 1.4, 1.5 at the same time form the holder for the outer rings 3.1 of the rolling bearings 3, in particular the rings 1.4, 1.5 are used for axial securing and axial prestressing of the rolling bearings 3.
- the power transmission between the outer rings 3.1 and the rings 1.4, 1.5 is characterized by radial circumferential paragraphs 1.43, 1.53 of the rings 1.4, 1.5 achieved.
- the rolling bearings 3 themselves are designed as deep groove ball bearings, so that these axial forces from the stator 1 to the rotor 2 and vice versa are transferable.
- the ring 1.4 has several, here sixteen recesses (four groups offset by 90 °, each with four recesses), which are terminated in the axial direction by bores, so that undercuts 1.42, based on the axial direction arise.
- the second ring 1.5 is configured so that these sixteen recesses (four offset by 90 ° groups with four recesses), which are designed as undercuts 1.52 has.
- the projections 1.31 of each holder 1.3 are pressed into the recesses, in particular the undercuts 1.42, 1.52 of the rings 1.4, 1.5.
- the projections 1.31 of the holder 1.3 then engage in the undercuts 1.42, 1.51 of the first ring 1.4 and the second ring 1.5, according to the FIG. 1 , which is a sectional view produced by a cutting line passing through two outer projections 1.31 with respect to the holder 1.3.
- FIGS. 2a to 2c In addition, effective areas 1.3a, 1.4a, 1.5a are shown.
- the holder 1.3 and the two rings 1.4, 1.5 each have these active surfaces 1.3a, 1.4a, 1.5a.
- the axial distance between projections 1.31 at the axially opposite ends of the holder 1.3 or the associated active surfaces 1.3a is dimensioned so that this (before mounting the holder 1.3 to the rings 1.4, 1.5) is slightly smaller than the axial distance of the undercuts 1.42, 1.52 or smaller than the axial distance of the active surfaces 1.4a, 1.5a of the opposite rings 1.4, 1.5. Since the holder 1.3 have this undersize, created after assembly an axial bias in the holders 1.3. This bias is transmitted by the paragraphs 1.43, 1.53 on the bearings 3, so that they are biased axially to each other. In this respect, axial tensile stresses are introduced into the holder 1.3 with the help of positive connections.
- the claw-like integrally formed on the main body of the holder 1.3 projections 1.31 are designed so that they complete flush after mounting on the rings 1.4, 1.5 with the radial outer contour of the rings 1.4, 1.5 or with their outer circumference.
- the radially outer contour of the projections 1.31 is thus at least partially a cylindrical surface with the diameter of the respective ring 1.4, 1.5 on its outer side.
- FIG. 3a is an end view of a holder 1.3 'shown without slip ring brushes, wherein the holder is 1.3' configured on its axially opposite non-illustrated end face analog.
- the holder 1.3 ' has three dovetail-like projections 1.31' and adjacent undercuts 1.32 '.
- the radial outer side of the projections 1.31 'or of the holder 1.3' extends on a circular line.
- the projections 1.31 'radially in each case have a contour which is rectilinear and tangentially oriented.
- the corresponding contour can also be designed so that it runs on a circular line, so that the projections 1.31 'can rest directly on the shell side of the outer ring 3.2.
- the radius of the circle line can be the same size as the outer radius of the outer ring 3.2.
- FIG. 3b showing a detail of the holder 1.3 'in a plan view, have the projections 1.31' and the undercuts 1.32 'active surfaces 1.3a' on. These active surfaces 1.3a 'are intended to cooperate with active surfaces 1.5a' of a further component, which is also designed here as a ring 1.5 '.
- the active surfaces 1.5a 'of the ring 1.5' are arranged on three dovetail-like projections 1.51 'and on adjacent undercuts 1.52'.
- the housing member 1.1 as a positive radial securing the positive connection between the interlocking dovetail projections 1.31 ', 1.51' and undercuts 1.32 ', 1.52'.
- the slip ring according to the second embodiment also has a plurality of holders 1.3 'distributed over the circumference, in the present case four holders 1.3' are used.
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- Motor Or Generator Current Collectors (AREA)
- Steering Controls (AREA)
Description
Die Erfindung betrifft eine Schleifringeinheit zum Übertragen von elektrischen Strömen zwischen zwei relativ zueinander drehbaren Bauteilgruppen, gemäß dem Anspruch 1.The invention relates to a slip ring unit for transmitting electrical currents between two relatively rotatable component groups, according to
Schleifringeinheiten bestehen üblicherweise unter anderem aus zwei Bauteilgruppen, nämlich einem Stator und einem Rotor. Der Stator umfasst häufig Schleifringbürsten, wogegen der Rotor meist eine Folge von Schleifringen aufweist. Im Betrieb haben die Schleifringbürsten gleitenden Kontakt zu den Mantelseiten der rotierenden Schleifringe. Derartige Schleifringeinheiten werden in vielen technischen Gebieten eingesetzt um elektrische Signale oder elektrische Leistung von einer ortsfesten auf eine sich drehende elektrische Einheit zu übertragen.Slip ring units usually consist, inter alia, of two component groups, namely a stator and a rotor. The stator often includes slip ring brushes, whereas the rotor usually has a series of slip rings. In operation, the slip ring brushes have sliding contact with the shell sides of the rotating slip rings. Such slip ring units are used in many technical fields to transmit electrical signals or electrical power from a stationary to a rotating electrical unit.
In der Offenlegungsschrift
In der Druckschrift
Der Erfindung liegt die Aufgabe zugrunde, eine Schleifringeinheit zu schaffen, welche eine hohe Zuverlässigkeit und gleichzeitig eine einfache und wirtschaftliche Herstellung erlaubt.The invention has for its object to provide a slip ring unit, which allows high reliability and at the same time a simple and economical production.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved by the features of
Bei der Schleifringeinheit zum Übertragen von elektrischen Strömen zwischen einer ersten und einer zweiten Bauteilgruppe sind die beiden Bauteilgruppen relativ zueinander um eine Achse drehbar angeordnet. Die erste Bauteilgruppe, z. B. ein Stator, umfasst zumindest eine Schleifringbürste, welche an einem Halter befestigt ist, der zwischen zwei in Richtung der Achse zueinander versetzt angeordneten Bauteilen montiert ist (die Bauteile können z. B. als statorseitige Ringe ausgestaltet sein). Die zweite Bauteilgruppe, z. B ein Rotor, weist zumindest einen Schleifring auf. Der Halter und zumindest eines der Bauteile weisen jeweils zumindest eine Wirkfläche auf, durch die zwischen dem Halter und dem zumindest einen Bauteil eine formschlüssige Verbindung hergestellt ist. Durch die formschlüssige Verbindung sind Kräfte mit einer Richtungskomponente parallel zur Achse übertragbar.In the slip ring unit for transmitting electric currents between a first and a second component group, the two component groups are rotatable relative to each other about an axis. The first component group, for. Example, a stator, comprises at least one slip ring brush, which is attached to a holder which is mounted between two in the direction of the axis offset from each other arranged components (the components may be configured, for example, as a stator-side rings). The second component group, z. B a rotor, has at least one slip ring. The holder and at least one of the components each have at least one active surface through which a positive connection is established between the holder and the at least one component. Due to the positive connection forces can be transmitted with a directional component parallel to the axis.
Als elektrische Ströme sind im Folgenden Ströme zu verstehen, die zur Übertragung von elektrischer Leistung erforderlich sind aber auch Ströme die als Signale ausgebildet sind und lediglich zur Übertragung von Informationen dienen.In the following, electrical currents are to be understood as currents which are required for the transmission of electrical power but also currents which are designed as signals and serve only for the transmission of information.
Mit Vorteil ist die Schleifringeinheit so konfiguriert, dass der Halter und beide besagten Bauteile jeweils zumindest eine Wirkfläche aufweisen, durch die zwischen dem Halter und den beiden Bauteilen jeweils eine formschlüssige Verbindung hergestellt ist.Advantageously, the slip ring unit is configured so that the holder and both said components each have at least one active surface through which between the holder and the two components in each case a positive connection is made.
Zumindest eines der Bauteile weist mit Vorteil eine Hinterschneidung auf und der Halter umfasst einen Vorsprung, wobei die Hinterschneidung und der Vorsprung ineinander greifende Wirkflächen aufweisen und derart zusammenwirken, dass zwischen dem Halter und dem zumindest einen Bauteil eine formschlüssige Verbindung hergestellt ist, durch welche Kräfte mit einer Richtungskomponente parallel zur Achse übertragbar sind. Mit Vorteil ist die Schleifringeinheit derart konfiguriert, dass beide Bauteile eine Hinterschneidung aufweisen. Die Schleifringeinheit kann so ausgestaltet sein, dass die zusammenwirkenden Wirkflächen des Halters und des Bauteils mit einer Überlappung in Umfangsrichtung ineinander greifen. Alternativ oder ergänzend kann die Schleifringeinheit derart konfiguriert sein, dass die zusammenwirkenden Wirkflächen mit einer Überlappung in Radialrichtung ineinander greifen.At least one of the components advantageously has an undercut and the holder comprises a projection, wherein the undercut and the projection have interlocking active surfaces and cooperate such that between the holder and the at least one component is made a positive connection by which forces one Direction component can be transferred parallel to the axis. Advantageously, the slip ring unit is configured such that both components have an undercut. The slip ring unit can be designed such that the cooperating active surfaces of the holder and of the component engage with an overlap in the circumferential direction. Alternatively or additionally, the slip ring unit can be configured such that the cooperating active surfaces mesh with one another in the radial direction.
Die Schleifringeinheit kann so ausgestaltet sein, dass in den Halter mit Hilfe der formschlüssigen Verbindung axiale Zugsspannungen eingeleitet werden können.The slip ring unit can be designed so that axial tensile stresses can be introduced into the holder with the aid of the positive connection.
In weiterer Ausgestaltung der Erfindung kann die erste Bauteilgruppe relativ zur zweiten Bauteilgruppe mit Hilfe eines Wälzlagers drehbar sein und das Bauteil zur axialen Sicherung des Wälzlagers dienen und insbesondere mit dem Wälzlager zu diesem Zweck verbunden sein. Insbesondere kann eines der Bauteile oder beide formschlüssig mit einem Außenring eines Wälzlagers verbunden sein zur Aufnahme von Axialkräften. Diese Anordnung ist besonders vorteilhaft, wenn das Wälzlager derart ausgestaltet ist, dass dieses Axialkräfte vom Außenring auf den Innenring übertragen kann, also beispielsweise wenn das Wälzlager als Rillenkugellager ausgestaltet ist. Die Schleifringeinheit kann so konfiguriert sein, dass durch diese Axialkräfte zwischen der ersten Bauteilgruppe und der zweiten Bauteilgruppe übertragbar sind, wobei durch die Axialkräfte mit Hilfe der formschlüssigen Verbindung axiale Zugsspannungen im Halter erzeugbar sind.In a further embodiment of the invention, the first component group can be rotatable relative to the second component group by means of a roller bearing and serve the component for axial securing of the rolling bearing and in particular be connected to the rolling bearing for this purpose. In particular, one of the components or both can be positively connected to an outer ring of a roller bearing for receiving axial forces. This arrangement is particularly advantageous if the rolling bearing is designed such that this axial forces can be transmitted from the outer ring to the inner ring, so for example when the rolling bearing is designed as a deep groove ball bearing. The slip ring unit can be configured so that these axial forces between the first group of components and the second group of components are transferable, wherein axial tensile forces in the holder can be generated by the axial forces by means of the positive connection.
In weiterer Ausgestaltung der Erfindung kann die erste Bauteilgruppe ein Gehäuseelement umfassen, welches als formschlüssige radiale Sicherung der formschlüssigen Verbindung zwischen dem Halter und dem zumindest einen Bauteil dient. Insbesondere kann das Gehäuseelement den Halter und das zumindest eine Bauteil im Bereich der formschlüssigen Verbindung spielfrei radial umschließen. Dabei kann das Gehäuseelement hohlzylindrisch bzw. rohrförmig ausgestaltet sein. Insbesondere kann das Gehäuseelement als formschlüssige radiale Sicherung von formschlüssigen Verbindungen an beiden Bauteilen dienen, wenn der Halter und beide Bauteile jeweils zumindest eine Wirkfläche aufweisen, durch die zwischen dem Halter und den Bauteilen jeweils eine formschlüssige Verbindung hergestellt ist.In a further embodiment of the invention, the first component group may comprise a housing element which serves as a positive radial securing of the positive connection between the holder and the at least one component. In particular, the housing element can radially surround the holder and the at least one component without play in the region of the positive connection. In this case, the housing element may be designed as a hollow cylinder or tubular. In particular, the housing element can be used as a positive radial securing of positive locking Connections serve on both components when the holder and both components each have at least one active surface, is made by the respective between the holder and the components a positive connection.
Mit Vorteil weist die Schleifringeinheit mehrere Halter auf, wobei zwischen den Haltern und dem zumindest einen Bauteil jeweils eine formschlüssige Verbindung hergestellt ist. Insbesondere kann die Schleifringeinheit zwei Halter aufweisen, die mit Vorteil um 180° um die Achse (Drehachse) versetzt angeordnet sind. Alternativ können auch drei Halter angeordnet sein, welche vorteilhafterweise in einem Winkelabstand von 120° zueinander angeordnet sind. In weiterer Ausgestaltung der Erfindung können vier Halter angeordnet sein, welche insbesondere in einem Winkelabstand von 90° zueinander angeordnet sind.Advantageously, the slip ring unit on several holders, wherein between the holders and the at least one component in each case a positive connection is made. In particular, the slip ring unit can have two holders, which are advantageously arranged offset by 180 ° about the axis (rotation axis). Alternatively, three holders can be arranged, which are advantageously arranged at an angular distance of 120 ° to each other. In a further embodiment of the invention, four holders can be arranged, which are arranged in particular at an angular distance of 90 ° to each other.
Vorteilhafte Ausbildungen der Erfindung entnimmt man den abhängigen Ansprüchen.Advantageous embodiments of the invention will remove the dependent claims.
Weitere Einzelheiten und Vorteile der erfindungsgemäßen Schleifringeinheit ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen anhand der beiliegenden Figuren.Further details and advantages of the slip ring unit according to the invention will become apparent from the following description of embodiments with reference to the accompanying figures.
Es zeigen die
Figur 1- eine Längsschnittdarstellung einer Schleifringeinheit,
- Figur 2a
- eine Detailansicht eines ersten Bauteils der Schleifringeinheit,
- Figur 2b
- eine Detailansicht eines Halters,
- Figur 2c
- eine Teilschnittdarstellung der Schleifringeinheit,
- Figur 3a
- eine Seitenansicht eines Halters gemäß einem zweiten Ausführungsbeispiel,
- Figur 3b
- eine Teildraufsicht des Halters gemäß dem zweiten Ausführungsbeispiel,
- Figur 3c
- eine Detailansicht eines Bauteils der Schleifringeinheit gemäß dem zweiten Ausführungsbeispiel
- Figur 3d
- eine Detailansicht der Schleifringeinheit gemäß dem zweiten Ausführungsbeispiel.
- FIG. 1
- a longitudinal sectional view of a slip ring unit,
- FIG. 2a
- a detailed view of a first component of the slip ring unit,
- FIG. 2b
- a detailed view of a holder,
- Figure 2c
- a partial sectional view of the slip ring unit,
- FIG. 3a
- a side view of a holder according to a second embodiment,
- FIG. 3b
- a partial plan view of the holder according to the second embodiment,
- Figure 3c
- a detailed view of a component of the slip ring unit according to the second embodiment
- 3d figure
- a detailed view of the slip ring unit according to the second embodiment.
Gemäß den
Der Rotor 2 umfasst eine Welle 2.1, die im vorliegenden Beispiel als Hohlwelle ausgestaltet ist. Radial außerhalb der Welle 2.1 befindet sich zunächst ein im Wesentlichen rohrförmiges Bauteil 2.4, welches beispielsweise aus Aluminium hergestellt sein kann. Daran weiterhin radial außerhalb anschließend ist ein Trägerrohr 2.5 angeordnet, das in Axialrichtung verlaufende Ausnehmungen 2.51 aufweist.The rotor 2 comprises a shaft 2.1, which is configured in the present example as a hollow shaft. Radially outside the shaft 2.1 is initially a substantially tubular member 2.4, which may be made of aluminum, for example. Then further radially outward, a support tube 2.5 is arranged, which has recesses 2.51 running in the axial direction.
Am elektrisch isolierenden Trägerrohr 2.5, das vorzugsweise aus Kunststoff oder Keramik hergestellt sein kann, sind verdrehsicher Schleifringe 2.2 befestigt, die durch elektrisch isolierende Ringe 2.3 mit axialem Abstand voneinander getrennt sind. Der Übersichtlichkeit halber wurde in den Figuren auf die Darstellung von elektrischen Leitungen verzichtet. Dem ungeachtet ist im Ausführungsbeispiel jeder der mit axialem Abstand aneinandergereihten Schleifringe 2.2 an seiner Innenseite mit einer elektrischen Leitung verbunden, die jeweils längs einer Ausnehmung 2.51 in Axialrichtung im Rotor 2 verlegt wird und den Rotor 2 durch eine der Rillen 2.11 an einem axialen Ende der Welle 2.1 verlässt.On electrically insulating support tube 2.5, which may preferably be made of plastic or ceramic, slip rings are 2.2 secured against rotation, which are separated by electrically insulating rings 2.3 with axial distance from each other. For clarity, was omitted in the figures on the presentation of electrical lines. Regardless, in the embodiment, each of the axially spaced-apart slip rings 2.2 is connected at its inner side with an electrical line, each along a recess 2.51 in the axial direction in the rotor. 2 is moved and leaves the rotor 2 through one of the grooves 2.11 at one axial end of the shaft 2.1.
Der Stator 1 weist gemäß dem Ausführungsbeispiel vier Halter 1.3 aus einem isolierenden Werkstoff, hier aus einem Kunststoff auf, wobei die Halter 1.3 jeweils um 90° versetzt entlang einer Umfangslinie angeordnet sind. Die Halter 1.3 haben einen im Wesentlichen quaderförmigen Grundkörper. An jedem der Halter 1.3 sind Schleifringbürsten 1.2 befestigt, welche dem Stator 1 zuzuordnen sind und federnd die Schleifringe 1.2 berühren. Vorliegend sind die Schleifringbürsten 1.2 als Drahtbündel ausgestaltet. Diese Schleifringbürsten 1.2 werden mit Hilfe von Durchkontaktierungen 1.33 (siehe
Die Halter 1.3 weisen Vorsprünge 1.31 auf, welche krallenartig an den Grundkörper angeformt sind. Die Vorsprünge 1.31 haben eine im Wesentlichen zylindrische Grundform, wobei die betreffenden Zylinderachsen parallel zueinander ausgerichtet sind, bzw. die Vorsprünge 1.31 parallel zueinander orientiert sind. Der Halter 1.3 ist einstückig ausgestaltet und wurde aus Kunststoff mit Hilfe eines Spritzgussprozesses hergestellt.The holder 1.3 have projections 1.31, which are claw-like formed on the base body. The projections 1.31 have a substantially cylindrical basic shape, wherein the respective cylinder axes are aligned parallel to each other, or the projections are oriented 1.31 parallel to each other. The holder 1.3 is designed in one piece and was made of plastic by means of an injection molding process.
Sowohl die Schleifringbürsten 1.2 als auch die Schleifringe 2.2 sind zum Schutz gegenüber Umgebungseinflüssen im Innenraum eines hohlzylindrischen Gehäuseelements 1.1 angeordnet. Der Innenraum wird statorseitig außerdem durch zwei Bauteile, hier zwei Ringe 1.4, 1.5 begrenzt. Diese Ringe 1.4, 1.5 bilden gleichzeitig die Halterung für die Außenringe 3.1 der Wälzlager 3, insbesondere dienen die Ringe 1.4, 1.5 zur axialen Sicherung und zur axialen Vorspannung der Wälzlager 3. Die Kraftübertragung zwischen den Außenringen 3.1 und den Ringen 1.4, 1.5 wird durch radiale umlaufende Absätze 1.43, 1.53 der Ringe 1.4, 1.5 erreicht. Die Wälzlager 3 selbst sind als Rillenkugellager ausgestaltet, so dass durch diese Axialkräfte vom Stator 1 zum Rotor 2 und umgekehrt übertragbar sind.Both the slip ring brushes 1.2 and the slip rings 2.2 are arranged to protect against environmental influences in the interior of a hollow cylindrical housing element 1.1. The interior of the stator is also limited by two components, here two rings 1.4, 1.5. These rings 1.4, 1.5 at the same time form the holder for the outer rings 3.1 of the rolling
Gemäß der
Im Zuge der Montage der Schleifringeinheit werden die Vorsprünge 1.31 eines jeden Halters 1.3 in die Ausnehmungen, insbesondere die Hinterschneidungen 1.42, 1.52 der Ringe 1.4, 1.5 gedrückt. Die Vorsprünge 1.31 der Halter 1.3 greifen dann in die Hinterschneidungen 1.42, 1,51 des ersten Rings 1.4 und des zweiten Rings 1.5 ein, gemäß der
Der axiale Abstand zwischen Vorsprüngen 1.31 an den axial gegenüberliegenden Enden der Halter 1.3 bzw. der dazugehörigen Wirkflächen 1.3a ist so bemessen, dass dieser (vor der Montage des Halters 1.3 an den Ringen 1.4, 1.5) etwas kleiner ist als der axiale Abstand der Hinterschneidungen 1.42, 1,52 bzw. kleiner ist als der axiale Abstand der Wirkflächen 1.4a, 1.5a der gegenüberliegenden Ringe 1.4, 1.5. Da die Halter 1.3 dieses Untermaß aufweisen, entsteht nach erfolgter Montage eine axiale Vorspannung in den Haltern 1.3. Diese Vorspannung wird durch die Absätze 1.43, 1.53 auf die Wälzlager 3 übertragen, so dass diese axial zueinander vorgespannt sind. Insofern werden mit Hilfe der formschlüssigen Verbindungen axiale Zugspannungen in den Halter 1.3 eingeleitet.The axial distance between projections 1.31 at the axially opposite ends of the holder 1.3 or the associated active surfaces 1.3a is dimensioned so that this (before mounting the holder 1.3 to the rings 1.4, 1.5) is slightly smaller than the axial distance of the undercuts 1.42, 1.52 or smaller than the axial distance of the active surfaces 1.4a, 1.5a of the opposite rings 1.4, 1.5. Since the holder 1.3 have this undersize, created after assembly an axial bias in the holders 1.3. This bias is transmitted by the paragraphs 1.43, 1.53 on the
Die krallenartig an den Grundkörper des Halters 1.3 angeformten Vorsprünge 1.31 sind so ausgestaltet, dass diese nach erfolgter Montage an den Ringen 1.4, 1.5 mit der radialen Außenkontur der Ringe 1.4, 1.5 bzw. mit deren Außenumfang bündig abschließen. Die radial außen liegende Kontur der Vorsprünge 1.31 ist also zumindest teilweise eine Zylinderfläche mit dem Durchmesser des jeweiligen Rings 1.4, 1.5 an seiner Außenseite. Somit wird durch Aufschieben des Gehäuseelements 1.1 eine radiale Sicherung der Verbindung, welche durch das Zusammenwirken der Hinterschneidungen 1.42, 1,51 mit den Vorsprüngen 1.31 entsteht, hergestellt.The claw-like integrally formed on the main body of the holder 1.3 projections 1.31 are designed so that they complete flush after mounting on the rings 1.4, 1.5 with the radial outer contour of the rings 1.4, 1.5 or with their outer circumference. The radially outer contour of the projections 1.31 is thus at least partially a cylindrical surface with the diameter of the respective ring 1.4, 1.5 on its outer side. Thus, by sliding the housing element 1.1, a radial securing of the connection, which results from the interaction of the undercuts 1.42, 1.51 with the projections 1.31, is produced.
In den
In der
Alternativ dazu kann die entsprechende Kontur auch so ausgestaltet sein, dass diese auf einer Kreislinie verläuft, so dass die Vorsprünge 1.31' unmittelbar auf der Mantelseite des Außenrings 3.2 aufliegen können. Der Radius der Kreisline kann genauso groß sein wie der Außenradius des Außenrings 3.2.Alternatively, the corresponding contour can also be designed so that it runs on a circular line, so that the projections 1.31 'can rest directly on the shell side of the outer ring 3.2. The radius of the circle line can be the same size as the outer radius of the outer ring 3.2.
Gemäß der
Nach dem Zusammenfügen ist zwischen dem Halter 1.3' und dem Ring 1.5' gemäß der
Claims (9)
- Slip ring unit for transmitting electric currents between a first component group (1) and a second component group (2), the two component groups (1, 2) being arranged such that they can be rotated relative to one another about an axis (A),- the first component group (1) comprising at least one slip ring brush (1.2) which is fastened to a holder (1.3; 1.3') which is mounted between two components (1.4, 1.5; 1.5') which are arranged offset with respect to one another in the direction of the axis (A), and- the second component group (2) having at least one slip ring (2.2),characterized in that the holder (1.3; 1.3') and both components (1.4, 1.5; 1.5') in each case have an active face (1.3a, 1.4a, 1.5a; 1.3a', 1.5a'), by way of which a positively lockinq connection is produced in each case between the holder (1.3; 1.3') and the two components (1.4, 1.5; 1.5'), it being possible for forces with a directional components parallel to the axis (A) to be transmitted by way of the positively locking connection, both components (1.4, 1.5; 1.5') in each case having an undercut (1.42, 1.51; 1.32'), and the holder (1.3; 1.3') comprising a projection (1.31, 1.31') for each component, the undercuts (1.42, 1.51; 1.32') and the projections (1.31, 1.31') having active faces (1.3a, 1.4a, 1.5a; 1.3a', 1.5a'), which engage into one another, and interacting in such a way that the positively locking connections are produced between the holder (1.3; 1.3') and the components (1.4, 1.5; 1.5') by way of them.
- Slip ring unit according to Claim 1, characterized in that axial tensile stresses can be introduced into the holder (1.3; 1.3') with the aid of the positively locking connection.
- Slip ring unit according to either of the preceding claims, characterized in that the first component group (1) can be rotated relative to the second component group (2) with the aid of an anti-friction bearing (3), and one of the components (1.4, 1.5; 1.5') serves to axially secure the anti-friction bearing (3).
- Slip ring unit according to Claim 3, characterized in that the anti--friction bearing (3) is configured in such a way that axial forces can be transmitted between the first component group (1) and the second component group (2) by way of the said anti-friction bearing (3).
- Slip ring unit according to one of the preceding claims, characterized in that the first component group (1) can be rotated relative to the second component group (2) with the aid of two anti-friction bearings (3), and in each case one of the components (1.4, 1.5; 1.5') serves to axially secure in each case one of the anti-friction bearings (3).
- Slip ring unit according to one of the preceding claims, characterized in that the first component group (1) comprises a housing element (1.1) which serves as a positively locking radial securing means of the positively locking connection.
- Slip ring unit according to Claim 6, characterized in that the holder (1.3; 1.3') and both components (1.4, 1.5; 1.5') in each case have an active face (1.3a, 1.4a, 1.5a; 1.3a', 1.5a'), by way of which a positively locking connection is produced in each case between the holder (1.3; 1.3') and the components (1.4, 1.5; 1.5'), and the housing element (1.1) serves as a positively locking radial securing means of the positively locking connections on both components (1.4, 1.5; 1.5').
- Slip ring unit according to Claim 6 or 7, characterized in that the housing element (1.1) is of hollow-cylindrical configuration.
- Slip ring unit according to one of the preceding claims, characterized in that it has a plurality of holders (1.3; 1.3').
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011101621A DE102011101621A1 (en) | 2011-05-14 | 2011-05-14 | Slip ring unit |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2525448A2 EP2525448A2 (en) | 2012-11-21 |
EP2525448A3 EP2525448A3 (en) | 2014-07-23 |
EP2525448B1 true EP2525448B1 (en) | 2017-01-18 |
Family
ID=45818997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12001534.2A Active EP2525448B1 (en) | 2011-05-14 | 2012-03-07 | Contact ring unit |
Country Status (5)
Country | Link |
---|---|
US (1) | US8616897B2 (en) |
EP (1) | EP2525448B1 (en) |
CN (1) | CN102790337B (en) |
DE (1) | DE102011101621A1 (en) |
ES (1) | ES2615518T3 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112013007090T5 (en) * | 2013-05-17 | 2016-01-28 | Schleifring Und Apparatebau Gmbh | High-current slip ring for multifiber brushes |
USD805458S1 (en) | 2015-05-15 | 2017-12-19 | Dometic Sweden Ab | Accessory base |
USD805019S1 (en) | 2015-05-15 | 2017-12-12 | Dometic Sweden Ab | Accessory base |
EP3118946B1 (en) * | 2015-07-15 | 2017-09-13 | LTN Servotechnik GmbH | Slip ring and slip ring unit with slip ring |
CN107887770A (en) * | 2017-10-23 | 2018-04-06 | 深圳市屯奇尔科技有限公司 | A kind of electric supply installation |
CN108233132A (en) * | 2017-12-29 | 2018-06-29 | 扬州海通电子科技有限公司 | A kind of inner supporting structure of large size power transmission sliding ring |
EP3716415B1 (en) * | 2019-03-26 | 2021-05-12 | LTN Servotechnik GmbH | Slip ring and slip ring unit with a slip ring |
CN111987550B (en) * | 2020-07-22 | 2022-04-26 | 中国兵器装备集团上海电控研究所 | Modularized rotary transmission device and system integrated by multilayer circuit board |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2426815A (en) * | 1943-07-13 | 1947-09-02 | Richard A Niekamp | Brush holder |
US2447662A (en) * | 1947-04-19 | 1948-08-24 | Westinghouse Electric Corp | Brush holder mounting |
US2747117A (en) * | 1952-08-27 | 1956-05-22 | George W Litz | Stud mountings and brush holder assemblies |
US3026433A (en) * | 1959-05-28 | 1962-03-20 | Westinghouse Electric Corp | Brush holder support for dynamo-electric machine |
US3297973A (en) * | 1963-08-30 | 1967-01-10 | Poly Scient Corp | Floating-brush contact assembly |
FR2715005B1 (en) * | 1994-01-10 | 1996-03-22 | Air Precision Sa | Electric collector rotating with multi-strand brushes. |
NL1017236C2 (en) * | 2001-01-30 | 2002-07-31 | Ocu Technologies B V | Rotation connector and a method for manufacturing such a connector. |
CN1178339C (en) * | 2002-05-30 | 2004-12-01 | 武汉华之洋光电系统有限责任公司 | Durable rotary electric contactor |
US7137822B1 (en) * | 2005-12-21 | 2006-11-21 | Single Buoy Moorings Inc. | High voltage swivel |
CN100492785C (en) * | 2007-04-29 | 2009-05-27 | 北京航天控制仪器研究所 | Radial insulation laminated conductive slip ring |
TWM331247U (en) * | 2007-10-05 | 2008-04-21 | Taiwan Long Hawn Entpr Co | Assembly slip ring |
DE102008051671A1 (en) * | 2008-10-15 | 2010-04-22 | Ltn Servotechnik Gmbh | Slip ring unit |
-
2011
- 2011-05-14 DE DE102011101621A patent/DE102011101621A1/en not_active Withdrawn
-
2012
- 2012-03-07 ES ES12001534.2T patent/ES2615518T3/en active Active
- 2012-03-07 EP EP12001534.2A patent/EP2525448B1/en active Active
- 2012-05-14 CN CN201210149488.5A patent/CN102790337B/en active Active
- 2012-05-14 US US13/471,411 patent/US8616897B2/en active Active
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
DE102011101621A1 (en) | 2012-11-15 |
CN102790337B (en) | 2016-06-15 |
EP2525448A3 (en) | 2014-07-23 |
EP2525448A2 (en) | 2012-11-21 |
US20120289064A1 (en) | 2012-11-15 |
CN102790337A (en) | 2012-11-21 |
ES2615518T3 (en) | 2017-06-07 |
US8616897B2 (en) | 2013-12-31 |
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