EP2828935A1 - System for the transmission of electrical current - Google Patents

System for the transmission of electrical current

Info

Publication number
EP2828935A1
EP2828935A1 EP13712141.4A EP13712141A EP2828935A1 EP 2828935 A1 EP2828935 A1 EP 2828935A1 EP 13712141 A EP13712141 A EP 13712141A EP 2828935 A1 EP2828935 A1 EP 2828935A1
Authority
EP
European Patent Office
Prior art keywords
conductor
conductors
opening
transmission
helical spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13712141.4A
Other languages
German (de)
French (fr)
Other versions
EP2828935B1 (en
Inventor
Willem Blakborn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rosenberger Hochfrequenztechnik GmbH and Co KG
Original Assignee
Rosenberger Hochfrequenztechnik GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rosenberger Hochfrequenztechnik GmbH and Co KG filed Critical Rosenberger Hochfrequenztechnik GmbH and Co KG
Publication of EP2828935A1 publication Critical patent/EP2828935A1/en
Application granted granted Critical
Publication of EP2828935B1 publication Critical patent/EP2828935B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4854—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a wire spring
    • H01R4/4863—Coil spring
    • 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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • H01R13/6315—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only allowing relative movement between coupling parts, e.g. floating connection
    • 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
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/17—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member on the pin
    • 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
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket
    • 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
    • H01R13/02—Contact members
    • H01R13/33—Contact members made of resilient wire
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles

Definitions

  • the invention relates to a system for transmitting electrical current with at least two electrically conductive interconnected rigid conductors.
  • the invention was based on the object, a generic system of at least two electrically conductive with each other associated rigid conductors indicate that, despite the possibility of a tolerance compensation with respect to the positioning of electrical functional elements to be connected by means of this system ensures a secure transmission behavior.
  • a generic system for the transmission of electric power both energy supply and signal transmission (including high frequency signals) and in particular of high current (> 48 V voltage of the power source) with at least two electrically conductive interconnected, rigid conductors according to the invention further developed in that the two conductors (indirectly) via at least one electrically conductive, deformable connecting element (electrically conductive) are connected.
  • the deformable connecting element ensures a relative mobility of the rigid conductors, by means of which tolerances with regard to the positioning of electrical functional elements which are to be connected via the system according to the invention can be compensated.
  • the connecting element may particularly preferably comprise a (preferably cylindrical) helical spring, which is formed annularly closed in the direction of its longitudinal axis and engages under bias a portion of a first of the conductors. This encompassing of the first conductor under bias ensures a permanent contact between the conductor and the coil spring.
  • a good transmission behavior can be achieved for the current flowing through the system.
  • the / the contact element (s) itself formed electrically conductive and also is electrically conductively connected to the first conductor / are.
  • the first conductor not only contacts the annular helical spring (s) on its inner side (with which it embraces the first conductor), but also via the contact element (s).
  • the effective area for the transmission of the current can be increased.
  • the second conductor which may be formed, for example, in the form of a flat component, has an opening through which the first conductor, which may be pin-shaped (at least in one section), extends. It is particularly preferably provided that at least one dimension of the opening of the second conductor are larger than the corresponding outer dimension of the first conductor in its recorded in the opening portion. This ensures relative mobility of the conductors in a variety of directions.
  • the opening and the portion of the first conductor received therein each have a circular cross-section, wherein the diameter difference is between 0.1 mm and 0.2 mm.
  • FIG. 1 shows a system according to the invention in an exploded isometric view
  • FIG. 2 shows a cross section through the system according to the invention according to FIG. 1.
  • FIG 1 and 2 show in different views an inventive system for the transmission of high current, as it can be used for example in the drive train of an electrified motor vehicle.
  • the system comprises two conductors 1, 2, which are designed as relatively bulky, solid metal components and therefore substantially rigid. A deformation of the conductors 1, 2 during assembly, for example, to compensate for positional tolerances of the system to be connected electrical functional elements, is therefore not possible.
  • the conductors 1, 2 are bulky and solid in order to keep their electrical resistance and consequently the power loss during the transmission of the high current low.
  • a first of the two conductors 1 is pin-shaped and the second conductor 2 is a contact rail, i. designed as a flat component.
  • the second conductor 2 has an opening 3 through which the first conductor 1 protrudes in the assembled state of the system.
  • the diameter of the opening 3 is larger than the outer diameter of the first conductor 1 in that portion in which it is accommodated in the opening.
  • the relative mobility of the two conductors 1, 2 to each other ensures a balance of positioning tolerances of the electrical functional elements, the to be connected by means of the system according to the invention.
  • the connecting elements are designed in the form of helical springs 4, which form a closed ring with respect to the longitudinal axes defined by the windings (with respect to the windings).
  • the inner diameter of the two annular coil springs 4 (in the unloaded state) are slightly smaller than the outer diameter of the first conductor 1 in those sections in which these surround the first conductor 1 after assembly of the system.
  • the coil springs 4, when they surround the corresponding sections of the first conductor 1, are radially widened, which, as a result of the elastic reaction forces, ensures a secure, complete abutment of the coil springs 4 on the first conductor 1.
  • the second conductor 2 is formed at its two large side surfaces of each one of the coil springs 4 in a radial plane formed by the respective coil spring 4, i. annular contact.
  • the one contact element is designed as a head part 5 of the first conductor 1, which has a larger diameter compared to a pin-shaped main body 6 of the first conductor 1.
  • the head part 5 forms an annular recess 7, in which the associated coil spring 4 is added.
  • the annular recess 7 is formed by an annular collar 8, whose longitudinal extent is chosen so that the (unloaded) coil spring 4 projects beyond this still a piece. This ensures that in a weak pressing of the head part 5 against the coil spring 4 is still a defined distance between the collar 8 and the second conductor 2, which ensures the desired ßewegiichkeit the first conductor 1 and the second conductor 2 to each other.
  • the second contact element is provided in the form of a contact sleeve 9, which also has a collar 8, which forms an annular recess 7, in which the associated coil spring 4 is almost completely absorbed. Also, this collar 8 is dimensioned so that at a low pressure from the contact sleeve 9 on the coil spring 4, a distance between the collar 8 and the second conductor 2 remains.
  • the minimum distance between the two contact elements is structurally determined, for which purpose an annular projection 10 is provided, against which the contact sleeve 9 abuts. This ensures that the contact sleeve 9 can not be moved too far in the direction of the head part 5 during assembly of the system, which otherwise could make the distances between the contact elements and the second conductor 2 too low.
  • connection of the contact sleeve 9 with the first conductor 1 is frictionally carried out by the inner diameter of the central opening 1 1 of the contact sleeve 9 is chosen slightly smaller than the outer diameter of a mounting portion 12 of the first conductor 1.
  • the diameter difference is preferably chosen so small that the contact sleeve 9 can be pushed manually or with the aid of a hand tool on the mounting portion 12.
  • the attachment portion 12 of the first conductor 1 has a slightly larger diameter than the portion of the base body 6 lying in front in the insertion direction on.
  • the contact sleeve 9 can be plugged onto the base body 6 of the first conductor 1 without substantial expenditure of force and can be displaced up to the fastening section 12.
  • An assembly of the system according to the invention is carried out by first one of the coil springs 4 is pushed onto the base body 6 of the first conductor 1 until it is received in the annular recess 7 of the head part 5. Then, the main body 6 of the first conductor 1 is inserted through the opening 3 of the second conductor 2. This is followed by a sliding of the other coil spring 4 on the base body 6 of the first conductor 1 and finally a sliding of the contact sleeve 9 on the mounting portion 12 of the first conductor. 1
  • the inventive design of the system allows relative mobility of the two conductors 1, 2 (within limits) to each other, and this both along the longitudinal axis of the first conductor 1 and radially thereto. Also tilting of first conductor 1 and second conductor 2 to each other is possible.
  • the effective for the transmission of the high current surface is essentially always the same, since the relative movement of the two conductors 1, 2 is received by the elastically deformable coil springs 4, without affecting the size of the contact surfaces between the two conductors 1, 2 and two coil springs 4 changed significantly.

Landscapes

  • Transformers For Measuring Instruments (AREA)
  • Springs (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

The invention relates to a system for the transmission of electrical current, comprising at least two rigid conductors, wherein said two conductors are connected via at least one electrically conducting, deformable connecting element, which can comprise a helical spring that is shaped like a ring in the direction of the longitudinal axis thereof and grips a section of a first conductor under pre-tension.

Description

System zur Übertragung von elektrischem Strom  System for transmission of electricity
Die Erfindung betrifft ein System zur Übertragung von elektrischem Strom mit mindestens zwei elektrisch leitend miteinander verbundenen starren Leitern. The invention relates to a system for transmitting electrical current with at least two electrically conductive interconnected rigid conductors.
Es ist bekannt, elektrischen Strom und insbesondere Hochstrom über Leiter zu übertragen, die als großvolumige, massive Metallbauteile, d.h. im Wesentlichen starr ausgebildet sind. Die Verwendung von starren Leitern führt zu dem Problem, dass elektrische Funktionselemente, die über diese Leiter verbunden werden sollen, relativ exakt zueinander positioniert sein müssen, da ein Ausgleich von Lagetoferanzen aufgrund der Starrheit der Leiter nicht ohne weiteres möglich ist. Dieses Problem könnte dadurch gelöst werden, dass die zumindest zwei Leiter des Systems mit einem definierten Spiel miteinander verbunden sind. Dann würde sich jedoch die Kontaktfläche zwischen den beiden Leitern in Abhängigkeit von deren relativer Lage zueinander ändern, was mit einem nicht zufriedenstellenden Übertragungsverhalten für den Strom verbunden sein könnte. It is known to transfer electrical power and, in particular, high current through conductors that are used as large volume, solid metal components, i. are formed substantially rigid. The use of rigid conductors leads to the problem that electrical functional elements which are to be connected via these conductors, must be positioned relatively accurately to each other, since a balance of Lagetoferanzen due to the rigidity of the ladder is not readily possible. This problem could be solved by connecting the at least two conductors of the system with a defined clearance. Then, however, the contact area between the two conductors would change depending on their relative position to each other, which could be associated with an unsatisfactory transfer behavior for the current.
Beispielsweise ist bekannt, in dem Antriebsstrang eines elektrifizierten Kraftfahrzeugs einen Stromverteiler mit einer Leistungselektronik über ein System aus starren Leitern zu verbinden. For example, in the powertrain of an electrified motor vehicle, it is known to connect a power distributor to power electronics via a system of rigid conductors.
Ausgehend von diesem Stand der Technik lag der Erfindung die Aufgabe zugrunde, ein gattungsgemäßes System aus mindestens zwei elektrisch leitfähig miteinander verbundenen, starren Leitern anzugeben, das trotz der Möglichkeit eines Toleranzausgleich bezüglich der Positionierung von elektrischen Funktionselementen, die mittels dieses Systems verbunden werden sollen, ein sicheres Übertragungsverhalten gewährleistet. Based on this prior art, the invention was based on the object, a generic system of at least two electrically conductive with each other associated rigid conductors indicate that, despite the possibility of a tolerance compensation with respect to the positioning of electrical functional elements to be connected by means of this system ensures a secure transmission behavior.
Diese Aufgabe wird durch ein System gemäß dem unabhängigen Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen des erfindungsgemäßen Systems sind Gegenstand der abhängigen Ansprüche und ergeben sich aus der nachfolgenden Beschreibung der Erfindung. This object is achieved by a system according to independent claim 1. Advantageous embodiments of the system according to the invention are the subject of the dependent claims and will become apparent from the following description of the invention.
Ein gattungsgemäßes System zur Übertragung von elektrischem Strom (sowohl zur Energieversorgung als auch zur Signalübermittlung (auch Hochfrequenzsignale)) und insbesondere von Hochstrom (> 48 V Spannung der Stromquelle) mit mindestens zwei elektrisch leitend miteinander verbundenen, starren Leitern ist erfindungsgemäß dadurch weitergebildet, dass die zwei Leiter (indirekt) über zumindest ein elektrisch leitfähiges, deformierbares Verbindungselement (elektrisch leitfähig) verbunden sind. A generic system for the transmission of electric power (both energy supply and signal transmission (including high frequency signals)) and in particular of high current (> 48 V voltage of the power source) with at least two electrically conductive interconnected, rigid conductors according to the invention further developed in that the two conductors (indirectly) via at least one electrically conductive, deformable connecting element (electrically conductive) are connected.
Durch das deformierbare Verbindungselement wird eine relative Beweglichkeit der starren Leiter gewährleistet, durch die Toleranzen bezüglich der Positionierung von elektrischen Funktionselementen, die über das erfindungsgemäße System verbunden werden sollen, ausgeglichen werden können. The deformable connecting element ensures a relative mobility of the rigid conductors, by means of which tolerances with regard to the positioning of electrical functional elements which are to be connected via the system according to the invention can be compensated.
Das Verbindungselement kann besonders bevorzugt eine (vorzugsweise zylindrische) Schraubenfeder umfassen, die in Richtung ihrer Längsachse ringförmig geschlossen ausgebildet ist und unter Vorspannung einen Abschnitt eines ersten der Leiter umgreift. Dieses Umgreifen des ersten Leiters unter Vorspannung stellt eine permanente Kontaktierung zwischen dem Leiter und der Schraubenfeder sicher. The connecting element may particularly preferably comprise a (preferably cylindrical) helical spring, which is formed annularly closed in the direction of its longitudinal axis and engages under bias a portion of a first of the conductors. This encompassing of the first conductor under bias ensures a permanent contact between the conductor and the coil spring.
Ein Kontakt zwischen der ringförmigen Schraubenfeder und zumindest dem zweiten, vorzugsweise beiden Leitern, erfolgt vorzugsweise in einer von der ringförmigen Schraubenfeder ausgebildeten Radialebene; die Schraubenfeder liegt somit ringförmig und folglich relativ großflächig an dem/den Leiter(n) an. Dadurch kann ein gutes Übertragungsverhalten für den über das System fließenden Strom erzielt werden. Besonders bevorzugt kann vorgesehen sein, dass (mindestens) zwei Schraubenfedern vorgesehen sind, die jeweils unter Vorspannung einen Abschnitt des ersten Leiters umgreifen und jeweils in einer von der jeweiligen Schraubenfeder ausgebildeten Radialebene an dem zweiten Leiter anliegen. Dadurch kann die wirksame Fläche zur Übertragung des Stroms relativ groß ausgebildet werden. A contact between the annular coil spring and at least the second, preferably two conductors, preferably takes place in a radial plane formed by the annular helical spring; the coil spring is thus annular and consequently relatively large area of the / the conductor (s). As a result, a good transmission behavior can be achieved for the current flowing through the system. Particularly preferably, it may be provided that (at least) two coil springs are provided, each of which surround a portion of the first conductor under prestressing and abut against the second conductor in each case in a radial plane formed by the respective helical spring. Thereby, the effective area for the transmission of the current can be made relatively large.
Um sicher zu stellen, dass die Schraubenfedern permanent an dem zweiten Leiter anliegen und somit ein gutes elektrisches Übertragungsverhalten sicherstellen, kann weiterhin vorgesehen sein, dass diese über (jeweils) ein Kontaktelement gegen den zweiten Leiter gedrückt werden. To ensure that the coil springs permanently abut the second conductor and thus ensure a good electrical transmission behavior, it can furthermore be provided that these are pressed against the second conductor via a contact element in each case.
Dabei ist besonders bevorzugt vorgesehen, dass das/die Kontaktelement(e) selbst elektrisch leitfähig ausgebildet und zudem elektrisch leitfähig mit dem ersten Leiter verbunden ist/sind. Dadurch kontaktiert der erste Leiter die ringförmige(n) Schraubenfeder(n) nicht nur an dessen/deren Innenseite (mit der diese den ersten Leiter umgreift/-en), sondern zusätzlich auch über die Kontaktelement(e). Dadurch kann wiederum die wirksame Fläche zur Übertragung des Stroms vergrößert werden. Vorzugsweise kann vorgesehen sein, dass der zweite Leiter, der beispielsweise in Form eines Flachbauteils ausgebildet sein kann, eine Öffnung aufweist, durch die sich der erste Leiter, der beispielsweise (zumindest in einem Abschnitt) stiftförmig ausgebildet sein kann, erstreckt. Dabei ist besonders bevorzugt vorgesehen, dass zumindest eine Abmessung der Öffnung des zweiten Leiters größer als die entsprechende Außenabmessung des ersten Leiters in dessen in der Öffnung aufgenommenen Abschnitt sind. Dadurch wird eine relative Beweglichkeit der Leiter in eine Vielzahl von Richtungen sichergestellt. It is particularly preferably provided that the / the contact element (s) itself formed electrically conductive and also is electrically conductively connected to the first conductor / are. As a result, the first conductor not only contacts the annular helical spring (s) on its inner side (with which it embraces the first conductor), but also via the contact element (s). As a result, in turn, the effective area for the transmission of the current can be increased. Preferably, it may be provided that the second conductor, which may be formed, for example, in the form of a flat component, has an opening through which the first conductor, which may be pin-shaped (at least in one section), extends. It is particularly preferably provided that at least one dimension of the opening of the second conductor are larger than the corresponding outer dimension of the first conductor in its recorded in the opening portion. This ensures relative mobility of the conductors in a variety of directions.
Vorzugsweise kann weiterhin vorgesehen sein, dass die Öffnung sowie der darin aufgenommene Abschnitt des ersten Leiters jeweils einen kreisförmigen Querschnitt aufweisen, wobei die Durchmesserdifferenz zwischen 0,1 mm und 0,2 mm beträgt. Preferably, it may further be provided that the opening and the portion of the first conductor received therein each have a circular cross-section, wherein the diameter difference is between 0.1 mm and 0.2 mm.
Die Erfindung wird nachfolgend anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels näher erläutert. In den Zeichnungen zeigt: The invention will be explained in more detail with reference to an embodiment shown in the drawings. In the drawings shows:
Fig.1 : ein erfindungsgemäßes System in einer isometrischen Explosionsdarstellung; und 1 shows a system according to the invention in an exploded isometric view; and
Fig. 2: einen Querschnitt durch das erfindungsgemäße System gemäß der Fig. 1 . 2 shows a cross section through the system according to the invention according to FIG. 1.
Die Fig. 1 und 2 zeigen in verschiedenen Ansichten ein erfindungsgemäßes System zur Übertragung von Hochstrom, wie es beispielsweise in dem Antriebsstrang eines elektrifizierten Kraftfahrzeugs zum Einsatz kommen kann. 1 and 2 show in different views an inventive system for the transmission of high current, as it can be used for example in the drive train of an electrified motor vehicle.
Das System umfasst zwei Leiter 1 , 2, die als relativ großvolumige, massive Metallbauteile und daher im Wesentlichen starr ausgebildet sind. Eine Deformation der Leiter 1 , 2 bei der Montage, beispielsweise um Lagetoleranzen von über das System zu verbindende elektrische Funktionselemente auszugleichen, ist daher nicht möglich. Die Leiter 1 , 2 sind großvolumig und massiv ausgebildet, um deren elektrischen Widerstand und folglich die Verlustleistung bei der Übertragung des Hochstroms gering zu halten. The system comprises two conductors 1, 2, which are designed as relatively bulky, solid metal components and therefore substantially rigid. A deformation of the conductors 1, 2 during assembly, for example, to compensate for positional tolerances of the system to be connected electrical functional elements, is therefore not possible. The conductors 1, 2 are bulky and solid in order to keep their electrical resistance and consequently the power loss during the transmission of the high current low.
Ein erster der zwei Leiter 1 ist stiftförmig und der zweite Leiter 2 als Kontaktschiene, d.h. als Flachbauteil ausgebildet. Der zweite Leiter 2 weist eine Öffnung 3 auf, durch die der erste Leiter 1 im montierten Zustand des Systems ragt. Wie sich aus der Fig. 2 ergibt, ist der Durchmesser der Öffnung 3 größer als der Außendurchmesser des ersten Leiters 1 in demjenigen Abschnitt, in dem dieser in der Öffnung aufgenommen ist. Durch diese Durchmesserdifferenz, die beispielsweise zwischen 0,1 mm undA first of the two conductors 1 is pin-shaped and the second conductor 2 is a contact rail, i. designed as a flat component. The second conductor 2 has an opening 3 through which the first conductor 1 protrudes in the assembled state of the system. As is apparent from Fig. 2, the diameter of the opening 3 is larger than the outer diameter of the first conductor 1 in that portion in which it is accommodated in the opening. By this diameter difference, for example, between 0.1 mm and
0.2 mm betragen kann, wird eine definierte Beweglichkeit zwischen den zwei Leitern0.2 mm, there will be a defined mobility between the two ladders
1 , 2 nicht nur entlang der Längsachse des ersten Leiters 1 , sondern auch radial dazu erreicht. Auch ein Verkippen (bei dem die Längsachse des ersten Leiters nicht mehr senkrecht zu den großen Seitenflächen des zweiten Leiters verläuft) des ersten Leiters 1 relativ zu dem zweiten Leiter 2 ist dadurch möglich. 1, 2 not only along the longitudinal axis of the first conductor 1, but also achieved radially thereto. A tilting (in which the longitudinal axis of the first conductor is no longer perpendicular to the large side surfaces of the second conductor) of the first conductor 1 relative to the second conductor 2 is thereby possible.
Die relative Beweglichkeit der zwei Leiter 1 , 2 zueinander gewährleistet einen Ausgleich von Positionierungstoleranzen der elektrischen Funktionselementen, die mittels des erfindungsgemäßen Systems verbunden werden sollen. The relative mobility of the two conductors 1, 2 to each other ensures a balance of positioning tolerances of the electrical functional elements, the to be connected by means of the system according to the invention.
Um unabhängig von der jeweiligen Lage der beiden Leiter 1 , 2 zueinander eine sichere Übertragung des Hochstroms über das System zu gewährleisten, ist vorgesehen, den Übertragungsweg für den Hochstrom von dem ersten Leiter 1 auf den zweiten Leiter 2 über zwei deformierbare Verbindungselemente auszubilden. Dadurch kann vermieden werden, dass sich die wirksame Fläche des Übertragungswegs für den Hochstrom in Abhängigkeit von der relativen Lage der beiden Leiter 1 , 2 zueinander verändert. Vielmehr bleiben die Kontaktflächen zwischen den Verbindungselementen einerseits und den beiden Leitern andererseits infolge der Deformierbarkeit der Verbindungselemente im Wesentlichen gleich groß, unabhängig von der relativen Lage der Leiter 1 , 2 zueinander. In order to ensure a safe transmission of the high current through the system independent of the respective position of the two conductors 1, 2, it is provided to form the transmission path for the high current from the first conductor 1 to the second conductor 2 via two deformable connecting elements. This can be avoided that the effective area of the transmission path for the high current depending on the relative position of the two conductors 1, 2 changed to each other. Rather, the contact surfaces between the connecting elements on the one hand and the two conductors on the other hand remain substantially the same size due to the deformability of the connecting elements, regardless of the relative position of the conductors 1, 2 to each other.
Die Verbindungselemente sind in Form von Schraubenfedern 4 ausgebildet, die bezüglich der von den Wicklungen definierten Längsachsen (bzgl. der Wicklungen) einen geschlossenen Ring ausbilden. Dabei sind die Innendurchmesser der beiden ringförmigen Schraubenfedern 4 (im entlasteten Zustand) geringfügig kleiner als der Außendurchmesser des ersten Leiters 1 in denjenigen Abschnitten, in denen diese den ersten Leiter 1 nach der Montage des Systems umgreifen. Dies führt dazu, dass die Schraubenfedern 4, wenn diese die entsprechenden Abschnitte des ersten Leiters 1 umgreifen, radial aufgeweitet sind, was in Folge der elastischen Reaktionskräfte für ein sicheres, vollumfängliches Anliegen der Schraubenfedern 4 an dem ersten Leiter 1 sorgt. Der zweite Leiter 2 wird an seinen zwei großen Seitenflächen von jeweils einer der Schraubenfedern 4 in einer von der jeweiligen Schraubenfeder 4 ausgebildeten Radialebene, d.h. ringförmig kontaktiert. The connecting elements are designed in the form of helical springs 4, which form a closed ring with respect to the longitudinal axes defined by the windings (with respect to the windings). The inner diameter of the two annular coil springs 4 (in the unloaded state) are slightly smaller than the outer diameter of the first conductor 1 in those sections in which these surround the first conductor 1 after assembly of the system. As a result, the coil springs 4, when they surround the corresponding sections of the first conductor 1, are radially widened, which, as a result of the elastic reaction forces, ensures a secure, complete abutment of the coil springs 4 on the first conductor 1. The second conductor 2 is formed at its two large side surfaces of each one of the coil springs 4 in a radial plane formed by the respective coil spring 4, i. annular contact.
Um einen permanenten Kontakt zwischen den beiden Schraubenfedern 4 und dem zweiten Leiter 2 sicher zu stellen, werden diese über jeweils ein elektrisch leitfähiges Kontaktelement gegen den zweiten Leiter 2 gedrückt. Dabei ist das eine Kontaktelement als Kopfteil 5 des ersten Leiters 1 ausgebildet, das verglichen mit einem stiftförmigen Grundkörper 6 des ersten Leiters 1 einen größeren Durchmesser aufweist. Der Kopfteil 5 bildet eine ringförmige Vertiefung 7 aus, in der die dazugehörige Schraubenfeder 4 aufgenommen ist. Die ringförmige Vertiefung 7 wird von einem ringförmigen Kragen 8 ausgebildet, dessen Längserstreckung so gewählt ist, dass die (unbelastete) Schraubenfeder 4 diesen noch ein Stück überragt. Dadurch wird sichergestellt, dass bei einem nur schwachen Andrücken des Kopfteils 5 gegen die Schraubenfeder 4 noch ein definierter Abstand zwischen dem Kragen 8 und dem zweiten Leiter 2 besteht, der die gewünschte ßewegiichkeit des ersten Leiters 1 und des zweiten Leiters 2 zueinander sicherstellt. In order to ensure a permanent contact between the two coil springs 4 and the second conductor 2, they are pressed against the second conductor 2 via an electrically conductive contact element. In this case, the one contact element is designed as a head part 5 of the first conductor 1, which has a larger diameter compared to a pin-shaped main body 6 of the first conductor 1. The head part 5 forms an annular recess 7, in which the associated coil spring 4 is added. The annular recess 7 is formed by an annular collar 8, whose longitudinal extent is chosen so that the (unloaded) coil spring 4 projects beyond this still a piece. This ensures that in a weak pressing of the head part 5 against the coil spring 4 is still a defined distance between the collar 8 and the second conductor 2, which ensures the desired ßewegiichkeit the first conductor 1 and the second conductor 2 to each other.
Das zweite Kontaktelement ist in Form einer Kontakthülse 9 vorgesehen, die ebenfalls einen Kragen 8 aufweist, der eine ringförmige Vertiefung 7 ausbildet, in der die dazugehörige Schraubenfeder 4 fast vollständig aufgenommen ist. Auch dieser Kragen 8 ist so dimensioniert, dass bei einem nur schwachen Druck von der Kontakthülse 9 auf die Schraubenfeder 4 ein Abstand zwischen dem Kragen 8 und dem zweiten Leiter 2 verbleibt. The second contact element is provided in the form of a contact sleeve 9, which also has a collar 8, which forms an annular recess 7, in which the associated coil spring 4 is almost completely absorbed. Also, this collar 8 is dimensioned so that at a low pressure from the contact sleeve 9 on the coil spring 4, a distance between the collar 8 and the second conductor 2 remains.
Der minimale Abstand zwischen den beiden Kontaktelementen ist konstruktiv festgelegt, wozu ein ringförmiger Vorsprung 10 vorgesehen ist, an dem die Kontakthülse 9 anschlägt. Dadurch wird sichergestellt, dass die Kontakthülse 9 bei der Montage des Systems nicht zu weit in Richtung des Kopfteils 5 verschoben werden kann, wodurch ansonsten die Abstände zwischen den Kontaktelementen und dem zweiten Leiter 2 zu gering ausfallen könnten. The minimum distance between the two contact elements is structurally determined, for which purpose an annular projection 10 is provided, against which the contact sleeve 9 abuts. This ensures that the contact sleeve 9 can not be moved too far in the direction of the head part 5 during assembly of the system, which otherwise could make the distances between the contact elements and the second conductor 2 too low.
Die Verbindung der Kontakthülse 9 mit dem ersten Leiter 1 ist kraftschlüssig ausgeführt, indem der Innendurchmesser der zentralen Öffnung 1 1 der Kontakthülse 9 etwas geringer als der Außendurchmesser eines Befestigungsabschnitts 12 des ersten Leiters 1 gewählt ist. Dabei ist die Durchmesserdifferenz vorzugsweise jedoch so gering gewählt, dass die Kontakthülse 9 manuell oder unter Zuhilfenahme eines Hand Werkzeugs auf den Befestigungsabschnitt 12 geschoben werden kann. Es besteht jedoch auch die Möglichkeit, durch eine Erwärmung des ersten Leiters 1 und der Kontakthülse 9 auf unterschiedliche Temperaturen eine Presspassung auszubilden. The connection of the contact sleeve 9 with the first conductor 1 is frictionally carried out by the inner diameter of the central opening 1 1 of the contact sleeve 9 is chosen slightly smaller than the outer diameter of a mounting portion 12 of the first conductor 1. However, the diameter difference is preferably chosen so small that the contact sleeve 9 can be pushed manually or with the aid of a hand tool on the mounting portion 12. However, it is also possible to form a press fit by heating the first conductor 1 and the contact sleeve 9 to different temperatures.
Der Befestigungsabschnitt 12 des ersten Leiters 1 weist einen etwas größeren Durchmesser als der in Steckrichtung davor liegende Abschnitt des Grundkörpers 6 auf. Dadurch kann die Kontakthülse 9 ohne wesentlichen Kraftaufwand auf den Grundkörper 6 des ersten Leiters 1 aufgesteckt und bis zu dem Befestigungsabschnitt 12 verschoben werden. Eine Montage des erfindungsgemäßen Systems erfolgt, indem zunächst eine der Schraubenfedern 4 auf den Grundkörper 6 des ersten Leiter 1 aufgeschoben wird, bis diese in der ringförmigen Vertiefung 7 des Kopfteils 5 aufgenommen ist. Dann wird der Grundkörper 6 des ersten Leiters 1 durch die Öffnung 3 des zweiten Leiters 2 gesteckt. Es folgt ein Aufschieben der anderen Schraubenfeder 4 auf den Grundkörper 6 des ersten Leiters 1 und abschließend ein Aufschieben der Kontakthülse 9 auf den Befestigungsabschnitt 12 des ersten Leiters 1. The attachment portion 12 of the first conductor 1 has a slightly larger diameter than the portion of the base body 6 lying in front in the insertion direction on. As a result, the contact sleeve 9 can be plugged onto the base body 6 of the first conductor 1 without substantial expenditure of force and can be displaced up to the fastening section 12. An assembly of the system according to the invention is carried out by first one of the coil springs 4 is pushed onto the base body 6 of the first conductor 1 until it is received in the annular recess 7 of the head part 5. Then, the main body 6 of the first conductor 1 is inserted through the opening 3 of the second conductor 2. This is followed by a sliding of the other coil spring 4 on the base body 6 of the first conductor 1 and finally a sliding of the contact sleeve 9 on the mounting portion 12 of the first conductor. 1
Die erfindungsgemäße Ausgestaltung des Systems ermöglicht eine relative Beweglichkeit der beiden Leiter 1 , 2 (in Grenzen) zueinander, und dies sowohl entlang der Längsachse des ersten Leiters 1 als auch radial dazu. Auch ist ein Verkippen von erstem Leiter 1 und zweitem Leiter 2 zueinander möglich. Dabei ist die für die Übertragung des Hochstroms wirksame Fläche im Wesentlichen stets gleich, da die Relativbewegung der beiden Leiter 1 , 2 von den elastisch deformierbaren Schraubenfedern 4 aufgenommen wird, ohne dass sich dabei die Größe der Kontaktflächen zwischen den beiden Leitern 1 , 2 und den beiden Schraubenfedern 4 wesentlich verändert. The inventive design of the system allows relative mobility of the two conductors 1, 2 (within limits) to each other, and this both along the longitudinal axis of the first conductor 1 and radially thereto. Also tilting of first conductor 1 and second conductor 2 to each other is possible. In this case, the effective for the transmission of the high current surface is essentially always the same, since the relative movement of the two conductors 1, 2 is received by the elastically deformable coil springs 4, without affecting the size of the contact surfaces between the two conductors 1, 2 and two coil springs 4 changed significantly.

Claims

Patentansprüche: claims:
1. System zur Übertragung von elektrischem Strom mit mindestens zwei starren Leitern (1 , 2), dadurch gekennzeichnet, dass die zwei Leiter (1 , 2) über zumindest ein elektrisch leitendes, deformierbares Verbindungselement verbunden sind. 1. System for the transmission of electric current with at least two rigid conductors (1, 2), characterized in that the two conductors (1, 2) via at least one electrically conductive, deformable connecting element are connected.
System gemäß Anspruch 1 , dadurch gekennzeichnet, dass das Verbindungselement eine Schraubenfeder (4) umfasst, die in Richtung ihrer Längsachse ringförmig ausgebildet ist und unter Vorspannung einen Abschnitt eines ersten der Leiter (1) umgreift. System according to claim 1, characterized in that the connecting element comprises a helical spring (4), which is annular in the direction of its longitudinal axis and surrounds under bias a portion of a first of the conductors (1).
System gemäß Anspruch 2, dadurch gekennzeichnet, dass die Schraubenfeder (4) zumindest den zweiten Leiter (2) in einer von dieser ausgebildeten Radialebene kontaktiert. System according to claim 2, characterized in that the helical spring (4) contacts at least the second conductor (2) in a radial plane formed therefrom.
System gemäß Anspruch 3, gekennzeichnet durch zwei Schraubenfedern (4), die unter Vorspannung jeweils einen Abschnitt des ersten Leiters (1) umgreifen und den zweiten Leiter (2) in einer von der jeweiligen Schraubenfeder (4) ausgebildeten Radialebene kontaktieren. System according to claim 3, characterized by two helical springs (4), each biasing around a portion of the first conductor (1) and contacting the second conductor (2) in a radial plane formed by the respective helical spring (4).
System gemäß Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Schraubenfeder(n) (4) mittels (jeweils) einem Kontaktelement gegen den zweiten Leiter (2) gedrückt wird/werden. System according to claim 3 or 4, characterized in that the helical spring (s) (4) is pressed against the second conductor (2) by means of (in each case) one contact element.
System gemäß Anspruch 5, dadurch gekennzeichnet, dass das/die Kon- taktelement(e) elektrisch leitfähig ausgebildet und mit dem ersten Leiter (1) elektrisch leitend verbunden ist/sind. System according to claim 5, characterized in that the / the contact element (s) is electrically conductive and electrically conductively connected to the first conductor (1) is / are.
7. System gemäß einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass der zweite Leiter (2) eine Öffnung (3) aufweist, durch die sich der erste Leiter (1) erstreckt. System gemäß Anspruch 7, dadurch gekennzeichnet, dass eine Abmessungen der Öffnung (3) des zweiten Leiters (2) größer als die entsprechende Außenabmessung des ersten Leiters (1) in dem in der Öffnung (3) aufgenommenen Abschnitt ist. 7. System according to one of claims 2 to 6, characterized in that the second conductor (2) has an opening (3) through which the first conductor (1) extends. A system according to claim 7, characterized in that a dimension of the opening (3) of the second conductor (2) is greater than the corresponding outer dimension of the first conductor (1) in the portion received in the opening (3).
System gemäß Anspruch 8, dadurch gekennzeichnet, dass die Öffnung (3) sowie der in der Öffnung aufgenommenen Abschnitt des ersten Leiters (1) jeweils einen kreisförmigen Querschnitt aufweisen, wobei die Durch- messerdifferenz zwischen 0,1 mm und 0,2 mm beträgt. System according to claim 8, characterized in that the opening (3) and the portion of the first conductor (1) received in the opening each have a circular cross-section, the diameter difference being between 0.1 mm and 0.2 mm.
System gemäß einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass der erste Leiter (1) stiftförmig und der zweite Leiter (2) als Flachbauteil ausgebildet sind. System according to one of claims 7 to 9, characterized in that the first conductor (1) pin-shaped and the second conductor (2) are formed as a flat component.
EP13712141.4A 2012-03-20 2013-03-18 System for the transmission of electrical current Active EP2828935B1 (en)

Applications Claiming Priority (2)

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DE202012002933U DE202012002933U1 (en) 2012-03-20 2012-03-20 System for transmission of electricity
PCT/EP2013/000816 WO2013139461A1 (en) 2012-03-20 2013-03-18 System for the transmission of electrical current

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EP2828935A1 true EP2828935A1 (en) 2015-01-28
EP2828935B1 EP2828935B1 (en) 2015-12-30

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JP (1) JP6130484B2 (en)
KR (1) KR101887994B1 (en)
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DE (1) DE202012002933U1 (en)
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CA2869789A1 (en) 2013-09-26
CA2869789C (en) 2018-05-01
JP6130484B2 (en) 2017-05-17
JP2015517177A (en) 2015-06-18
CN104285342B (en) 2017-08-29
TWM457955U (en) 2013-07-21
CN104285342A (en) 2015-01-14
DE202012002933U1 (en) 2012-04-03
US20150050824A1 (en) 2015-02-19
EP2828935B1 (en) 2015-12-30
KR101887994B1 (en) 2018-08-14
WO2013139461A1 (en) 2013-09-26
US9570850B2 (en) 2017-02-14
KR20140139534A (en) 2014-12-05

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