EP2293390A1 - Electrical connection between the housing of a coil winding and a board - Google Patents

Electrical connection between the housing of a coil winding and a board Download PDF

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Publication number
EP2293390A1
EP2293390A1 EP09011403A EP09011403A EP2293390A1 EP 2293390 A1 EP2293390 A1 EP 2293390A1 EP 09011403 A EP09011403 A EP 09011403A EP 09011403 A EP09011403 A EP 09011403A EP 2293390 A1 EP2293390 A1 EP 2293390A1
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EP
European Patent Office
Prior art keywords
housing
circuit board
pin
electrical connection
winding material
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
EP09011403A
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German (de)
French (fr)
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EP2293390B1 (en
Inventor
Thorsten Hobein
Bernd Gebert
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SMA Solar Technology AG
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SMA Solar Technology AG
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Publication date
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Priority to EP20090011403 priority Critical patent/EP2293390B1/en
Priority to PCT/EP2010/062981 priority patent/WO2011026950A1/en
Publication of EP2293390A1 publication Critical patent/EP2293390A1/en
Application granted granted Critical
Publication of EP2293390B1 publication Critical patent/EP2293390B1/en
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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
    • H01R13/62—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
    • H01R13/04—Pins or blades for co-operation with sockets
    • H01R13/08—Resiliently-mounted rigid pins or blades

Definitions

  • the present invention relates to an electrical connection between the housing of a winding material and a circuit board, comprising a plurality of contact pins, which are arranged on the housing, wherein each pin is connected on the one hand to the winding material and on the other hand by a contact element with the circuit board in electrical connection.
  • inverters often have a plurality of chokes, which are in electrical connection with a respective circuit board.
  • the throttles are in this case housed in housings, in particular pot-like housings, the pot-like housings having contact pins which are connected to the inductor winding.
  • inverters often have several reactors. It is now known to install the reactors of the inverter in the housing of the inverter, then install the board and then screw the two parts together. The screwing is done in detail by the fact that a plurality of sockets are provided on the housing of the winding material, record the pins, wherein the pins are arranged to be movable in the bushes in the longitudinal direction. These pins have an internal thread.
  • Stützfozochen are arranged, which are in communication with the corresponding tracks on the board.
  • These support feet have on their top a bore for receiving a screw to connect by means of such a screw, the contact pins with the support feet. That is, the pins are screwed against the board.
  • Such a choke usually has four pins for connection to the board.
  • an inverter usually has multiple chokes that must be connected to the board.
  • an extremely accurate production and assembly is necessary, otherwise a contact is not possible, if it should not come to damage, especially on the board.
  • the object underlying the invention is therefore to provide a tolerance compensation in an electrical connection of the type mentioned in such a way that even when not aligned Arrangement of the parts to be contacted a mounting is easily possible.
  • each pin is held floating in the housing by a bearing bush.
  • the idea underlying the invention is therefore, by a floating bearing, which means that the pin is laterally movable, to ensure that with appropriate manufacturing inaccuracies of the pin can still be brought into contact with the contact element of the board.
  • This is achieved by a so-called “floating” storage ", in which the pin by a certain amount by the bearing pivotally, that is laterally movably receivable.
  • the bearing bush has a plurality of resiliently engaging retaining arms acting radially on the circumference of the pin, wherein the pin is held laterally movably in the bearing bush against the retaining arms. It is essential here that the bearing bush has a radial play, in order to ensure that the elastically yielding retaining arms can actually deflect laterally when pivoting of the pin occurs in the bearing bush.
  • the pin on the circumference has a tangential circumferential groove, in which engage the retaining arms.
  • the holding arms are provided to each have a collar at the end, which engages in the groove of the pin.
  • the groove in the pin has an axial extent which is greater than the collar of the respective holding arm, a displacement of the pin parallel to its longitudinal axis is possible. This means that not only a tolerance compensation in the radial direction is possible by pivoting the pin, but also in the axial direction of the pin.
  • centering fingers are provided above the support arms in the bearing bush. Several such circumferentially distributed around the pin grouped centering fingers additionally ensure centering of the pin substantially perpendicular to the top of the bearing bush.
  • the bearing bush comprises a ring or a sleeve, wherein the ring or the sleeve has a particular segmented retaining ring, wherein the retaining ring is held by resilient arms against the ring or the sleeve pressed.
  • the retaining ring within the sleeve or the ring in the radial direction, that is laterally movable, which in turn causes the pin received by the retaining ring is also laterally movable, that is pivotable about its longitudinal axis. This against the background of a desired tolerance compensation.
  • the elastic resilient mounting of the retaining ring in the ring or sleeve is achieved according to a feature of the invention in that the arms are arranged tangentially extending in the ring or the sleeve. Furthermore, it is advantageous if the retaining ring has an axial extent which is less than the length of the groove in the pin, so that an axial displaceability of the pin is made possible in the retaining ring.
  • the retaining ring is formed segmented. The segments can in the radial direction by the tangential formation of the Dodge the arm. In this respect, the segments of the retaining ring can snap into the groove of the contact pin. Conceivable and covered by the invention is also an embodiment in which the retaining ring is made of elastically yielding material.
  • each pin is on the one hand with the winding material, and on the other hand with the board by a contact element in electrical connection.
  • the formation of such a contact element is advantageously made according to a feature of the invention such that the contact element is designed as a spring wreath.
  • Such a spring ring advantageously comprises a plurality of circularly arranged spring tongues, which contact the pin end.
  • the spring tongue itself is in this case attached directly to the board, wherein it is advantageously provided according to an embodiment that the spring tongues are arranged in a cylindrical housing on the board. When inserted pin, the spring tongues are radially on the inner wall of the housing, d.
  • the spring tongues are supported at the end resiliently on the housing inner wall, resulting in that the pin is in good electrical contact with the spring tongues.
  • the contact is extremely stable, without burdening the board, as on the one hand by the floating support of the pin and on the other hand by the contact of the pin through the spring ring shocks can be largely intercepted, without this transmitted to the board.
  • the contacts can not solve either, so that for this reason such an electrical connection is extremely safe.
  • there is no risk to forget a screw during assembly since - as already stated - the electrical contact is already made directly when the throttle is installed with its housing in the inverter. It thus eliminates the separate contact of the pins with the Kunststofffzipchen, as has been described. In this respect, this also increases the mounting security.
  • the invention also provides an inverter, comprising at least one electrical winding material and at least one circuit board with an electrical connection between the winding material and the circuit board according to one or more of the previously discussed features.
  • FIG. 1 the prior art is shown as it is made for electrically contacting a throttle with a circuit board.
  • the housing of the throttle is designated 1.
  • the contact pin 3 In the housing of the throttle sits with the designated bearing bush 2, which receives the contact pin 3 longitudinally displaceable.
  • the contact pin 3 has a collar 3a which is seated in a corresponding groove 2a of the socket 2.
  • the generally designated 5 board shows the Stauerfspichen 6, each of which serves to receive the screw 7, which is screwed into the frontal internal thread of the pin 3, and insofar makes the contact between the Stauerfchtchen 6 on the one hand and the contact pin 3 on the other.
  • the electrical connection of the contact pin 3 with the winding of the throttle is not shown.
  • the internal thread of the pin 3 must be flush with the hole in the Stönfspichen 6, the connection between the housing 1 of the winding material and the board should be made. If the two parts, so the socket of the housing and the support legs with the hole for the screw on the board, not aligned with each other, so a connection can not be made. Rather, it must then be reworked to allow such a connection in the end, or the screw is clamped against the board.
  • the bearing bushing designated 2 is formed on the housing 1 such that it has an upper opening 10 from which the pin 3 exits.
  • the end having a collar 13, wherein the collar 13 engages in the groove 3 a of the pin 3. It is essential here that the collar 13 is smaller in height than the length of the groove 3 a, so that the pin is movable axially in the direction of the double arrow 20.
  • a plurality of centering fingers 15 are arranged, which due to their inherent elasticity keep the pin 3 centrally approximately centrally, as can be seen in FIG FIG. 2 results.
  • the individual fingers 15 have a distance X to the side wall of the bearing bush 2, wherein the distance X finally defines the angle at which the pin 10 can be pivoted in accordance with the double arrow 25. Since the retaining arms 12 are formed resiliently, and can also move laterally, a corresponding to the edge of the socket with the distance X distance Y is provided, so that also the mobility of the pin 3 is given.
  • centering fingers 15 serve only the better centering.
  • the actual floating bearing is provided by the support arms 12 in the bearing bush. That is, the centering fingers 15 align the pin 3 perpendicular to the top of the socket so that it enters the corresponding opening in the board.
  • FIG. 2 is how out Figure 3a and 3b can be seen, a bearing bush 2 forming sleeve 30th provided, wherein the sleeve 30 has inside a retaining ring 35 which is segmented.
  • the individual segments 36 are fastened to the sleeve 30 by elastically yielding arms 37.
  • the pin 3 received by the segmented retaining ring 35 lies in the region of its groove 3a in the segmented retaining ring 35 (FIG. Fig. 3c ) one. Since the arms 37 are arranged tangentially extending in the sleeve 30, there is a certain radial mobility of the retaining ring 35 and the individual segments 36, provided that the retaining ring 35 is segmented.
  • Conceivable here is also a solution in which the retaining ring is formed elastically resilient in itself, and thus snaps into the groove of the pin.
  • elastically compliant arms 37 may also be provided as previously described.
  • the contact of the pin 3 on the board 5 is effected by the spring ring 40.
  • the pin 3 which is held at the lower end by the bearing bush 2, protrudes in the upper region in the spring ring 40 and projects beyond this with its tip.
  • the spring ring 40 consists of individual spring tongues 41, which are arranged in a circle on the board around the pin 3 around and are formed conically tapered to each other.
  • the spring tongues are connected to the printed conductors of the board.
  • the spring tongues 41 have each end projections 41 a, with which the spring tongues 41 on the inner wall of the cylindrical housing 45 (FIGS. FIG. 4b ) abut resiliently when protruding into the spring ring of the pen. This means that the spring tongues 41 are pressed against the spring force to the outside during the passage of the pin 3 by the spring ring, so that a secure electrical contact of the pin is given by the spring ring 40 with the board 5.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

The connection has contact pins (3) arranged at a housing (1), where each pin is electrically connected with an electrical winding material at one end and with a printed circuit board at another end by a contact element. Each of the pins is floatingly held in the housing by a bearing sleeve (2) that has a flexible holding arm (12) radially engaged in a groove (3a) on a periphery of the pins. Each pin is held against the holding arm in a laterally movable manner, and each arm has a collar provided at its end side and engaged in the groove.

Description

Die vorliegende Erfindung betrifft eine elektrische Verbindung zwischen dem Gehäuse eines Wickelgutes und einer Platine, umfassend mehrere Kontaktstifte, die an dem Gehäuse angeordnet sind, wobei jeder Stift einerseits mit dem Wickelgut und andererseits durch ein Kontaktelement mit der Platine in elektrischer Verbindung steht.The present invention relates to an electrical connection between the housing of a winding material and a circuit board, comprising a plurality of contact pins, which are arranged on the housing, wherein each pin is connected on the one hand to the winding material and on the other hand by a contact element with the circuit board in electrical connection.

Insbesondere Wechselrichter weisen häufig eine Mehrzahl an Drosseln auf, die in elektrischer Verbindung mit jeweils einer Platine stehen. Die Drosseln sind hierbei in Gehäusen, insbesondere topfartigen Gehäusen, untergebracht, wobei die topfartigen Gehäuse Kontaktstifte aufweisen, die mit der Drosselwicklung in Verbindung stehen. Wie bereits ausgeführt, besitzen Wechselrichter häufig mehrere Drosseln. Bekannt ist nun, die Drosseln des Wechselrichters in das Gehäuse des Wechselrichters einzubauen, alsdann die Platine einzubauen und die beiden Teile dann miteinander zu verschrauben. Die Verschraubung erfolgt im Einzelnen dadurch, dass an dem Gehäuse des Wickelgutes mehrere Buchsen vorgesehen sind, die Stifte aufnehmen, wobei die Stifte in den Buchsen in Längsrichtung beweglich angeordnet sind. Diese Stifte weisen ein Innengewinde auf. Auf der Platine selbst sind Stützfüßchen angeordnet, die mit den entsprechenden Leiterbahnen auf der Platine in Verbindung stehen. Diese Stützfüßchen besitzen auf ihrer Oberseite eine Bohrung zur Aufnahme einer Schraube, um mithilfe einer solchen Schraube die Kontaktstifte mit den Stützfüßchen zu verbinden. Das heißt, die Stifte werden gegen die Platine verschraubt. Eine solche Drossel besitzt üblicherweise vier Kontaktstifte zur Verbindung mit der Platine.In particular, inverters often have a plurality of chokes, which are in electrical connection with a respective circuit board. The throttles are in this case housed in housings, in particular pot-like housings, the pot-like housings having contact pins which are connected to the inductor winding. As already stated, inverters often have several reactors. It is now known to install the reactors of the inverter in the housing of the inverter, then install the board and then screw the two parts together. The screwing is done in detail by the fact that a plurality of sockets are provided on the housing of the winding material, record the pins, wherein the pins are arranged to be movable in the bushes in the longitudinal direction. These pins have an internal thread. On the board itself Stützfüßchen are arranged, which are in communication with the corresponding tracks on the board. These support feet have on their top a bore for receiving a screw to connect by means of such a screw, the contact pins with the support feet. That is, the pins are screwed against the board. Such a choke usually has four pins for connection to the board.

Wie bereits an anderer Stelle ausgeführt, besitzt ein Wechselrichter üblicherweise mehrere Drosseln, die mit der Platine verbunden werden müssen. Um nun sicherzustellen, dass die Kontaktstifte mit den Stützfüßchen auf der Platine fluchten, ist eine extrem genaue Fertigung und Montage notwendig, da andernfalls eine Kontaktierung nicht möglich ist, wenn es nicht zu Schäden, insbesondere an der Platine, kommen soll.As stated elsewhere, an inverter usually has multiple chokes that must be connected to the board. In order to ensure that the contact pins are aligned with the support feet on the board, an extremely accurate production and assembly is necessary, otherwise a contact is not possible, if it should not come to damage, especially on the board.

Die der Erfindung zugrunde liegende Aufgabe besteht demzufolge darin, bei einer elektrischen Verbindung der eingangs genannten Art einen Toleranzausgleich derart vorzusehen, dass auch bei nicht fluchtender Anordnung der zu kontaktierenden Teile eine Montage problemlos möglich ist.The object underlying the invention is therefore to provide a tolerance compensation in an electrical connection of the type mentioned in such a way that even when not aligned Arrangement of the parts to be contacted a mounting is easily possible.

Zur Lösung der Aufgabe wird erfindungsgemäß vorgeschlagen, dass jeder Stift in dem Gehäuse durch eine Lagerbuchse schwimmend gehalten ist.To achieve the object, the invention proposes that each pin is held floating in the housing by a bearing bush.

Der der Erfindung zugrunde liegende Gedanke besteht demzufolge darin, durch eine schwimmende Lagerung, was bedeutet, dass der Stift seitlich beweglich ist, dafür zu sorgen, dass bei entsprechenden Fertigungsungenauigkeiten der Stift dennoch mit dem Kontaktelement der Platine in Verbindung gebracht werden kann. Dies wird durch eine sogenannte "schwimmende" Lagerung" erreicht, bei der der Stift um einen gewissen Betrag durch die Lagerung verschwenkbar, also seitlich beweglich aufnehmbar ist.The idea underlying the invention is therefore, by a floating bearing, which means that the pin is laterally movable, to ensure that with appropriate manufacturing inaccuracies of the pin can still be brought into contact with the contact element of the board. This is achieved by a so-called "floating" storage ", in which the pin by a certain amount by the bearing pivotally, that is laterally movably receivable.

Vorteilhafte Merkmale und weitere Ausführungsformen sind den Unteransprüchen zu entnehmen.Advantageous features and further embodiments can be found in the dependent claims.

So ist nach einer Ausführungsform vorgesehen, dass die Lagerbuchse mehrere radial auf dem Umfang des Stiftes angreifende, elastisch nachgiebige Haltearme aufweist, wobei der Stift gegen die Haltearme seitlich beweglich in der Lagerbuchse gehalten ist. Wesentlich hierbei ist, dass die Lagerbuchse ein radiales Spiel aufweist, um zu gewährleisten, dass die elastisch nachgiebigen Haltearme tatsächlich seitlich ausweichen können, wenn es zu einer Verschwenkung des Stiftes in der Lagerbuchse kommt.Thus, according to one embodiment, it is provided that the bearing bush has a plurality of resiliently engaging retaining arms acting radially on the circumference of the pin, wherein the pin is held laterally movably in the bearing bush against the retaining arms. It is essential here that the bearing bush has a radial play, in order to ensure that the elastically yielding retaining arms can actually deflect laterally when pivoting of the pin occurs in the bearing bush.

Nach einer Ausführungsform ist hierbei vorgesehen, dass der Stift auf dem Umfang eine tangential umlaufende Nut aufweist, in die die Haltearme eingreifen. Hierbei ist insbesondere vorgesehen, dass die Haltearme jeweils endseitig einen Bund aufweisen, der in die Nut des Stiftes eingreift. Insbesondere dann, wenn die Nut in dem Stift eine axiale Erstreckung hat, die größer ist, als der Bund des jeweiligen Haltearms, ist eine Verschiebung des Stiftes parallel zu seiner Längsachse möglich. Das heißt, dass hierbei durch ein Verschwenken des Stiftes nicht nur ein Toleranzausgleich in radialer Richtung möglich ist, sondern vielmehr auch in axialer Richtung des Stiftes.According to one embodiment, it is provided that the pin on the circumference has a tangential circumferential groove, in which engage the retaining arms. In this case, provision is made in particular for the holding arms to each have a collar at the end, which engages in the groove of the pin. In particular, when the groove in the pin has an axial extent which is greater than the collar of the respective holding arm, a displacement of the pin parallel to its longitudinal axis is possible. This means that not only a tolerance compensation in the radial direction is possible by pivoting the pin, but also in the axial direction of the pin.

Zur weiteren Zentrierung des Kontaktstiftes in der Lagerbuchse sind oberhalb der Haltearme in der Lagerbuchse Zentrierfinger vorgesehen. Mehrere solcher umfangsverteilt um den Stift herumgruppierte Zentrierfinger sorgen zusätzlich für eine Zentrierung des Stiftes im Wesentlichen senkrecht zur Oberseite der Lagerbuchse.For further centering of the contact pin in the bearing bushing centering fingers are provided above the support arms in the bearing bush. Several such circumferentially distributed around the pin grouped centering fingers additionally ensure centering of the pin substantially perpendicular to the top of the bearing bush.

Eine andere Ausführungsform einer schwimmenden Lagerung zeichnet sich dadurch aus, dass die Lagerbuchse einen Ring oder eine Hülse umfasst, wobei der Ring oder die Hülse einen insbesondere segmentierten Haltering aufweist, wobei der Haltering durch elastisch nachgiebige Arme gegen den Ring oder die Hülse gepresst gehalten ist. Das heißt, dass der Haltering innerhalb der Hülse oder des Ringes in radialer Richtung, d. h. seitlich beweglich ist, was wiederum bewirkt, dass der von dem Haltering aufgenommene Stift ebenfalls seitlich beweglich, also um seine Längsachse verschwenkbar ist. Dies vor dem Hintergrund eines gewünschten Toleranzausgleichs. Die elastische nachgiebige Lagerung des Halterings in dem Ring oder Hülse wird nach einem Merkmal der Erfindung dadurch erreicht, dass die Arme tangential verlaufend in dem Ring oder der Hülse angeordnet sind. Weiterhin ist vorteilhaft, wenn der Haltering eine axiale Erstreckung aufweist, die geringer ist, als die Länge der Nut in dem Stift, sodass eine axiale Verschieblichkeit des Stiftes in dem Haltering ermöglicht wird. Um das Einlaufen des Halterings in die Nut des Stiftes zu ermöglichen, ist der Haltering segmentiert ausgebildet. Die Segmente können in radialer Richtung durch die tangentiale Ausbildung der Arms ausweichen. Insofern können die Segmente des Halterings in die Nut des Kontaktstiftes einschnappen. Denkbar und von der Erfindung erfasst ist auch eine Ausführungsform, bei der der Haltering aus elastisch nachgiebigem Material hergestellt ist.Another embodiment of a floating bearing is characterized in that the bearing bush comprises a ring or a sleeve, wherein the ring or the sleeve has a particular segmented retaining ring, wherein the retaining ring is held by resilient arms against the ring or the sleeve pressed. This means that the retaining ring within the sleeve or the ring in the radial direction, that is laterally movable, which in turn causes the pin received by the retaining ring is also laterally movable, that is pivotable about its longitudinal axis. This against the background of a desired tolerance compensation. The elastic resilient mounting of the retaining ring in the ring or sleeve is achieved according to a feature of the invention in that the arms are arranged tangentially extending in the ring or the sleeve. Furthermore, it is advantageous if the retaining ring has an axial extent which is less than the length of the groove in the pin, so that an axial displaceability of the pin is made possible in the retaining ring. In order to allow the retraction of the retaining ring in the groove of the pin, the retaining ring is formed segmented. The segments can in the radial direction by the tangential formation of the Dodge the arm. In this respect, the segments of the retaining ring can snap into the groove of the contact pin. Conceivable and covered by the invention is also an embodiment in which the retaining ring is made of elastically yielding material.

Wie bereits an anderer Stelle erläutert, steht jeder Stift einerseits mit dem Wickelgut, und andererseits mit der Platine durch ein Kontaktelement in elektrischer Verbindung. Die Ausbildung eines solchen Kontaktelementes ist nach einem Merkmal der Erfindung vorteilhaft derart getroffen, dass das Kontaktelement als Federkranz ausgebildet ist. Ein solcher Federkranz umfasst vorteilhaft mehrere kreisförmig angeordnete Federzungen, die den Stift endseitig kontaktieren. Die Federzunge selbst ist hierbei unmittelbar an der Platine befestigt, wobei vorteilhaft nach einer Ausführungsform vorgesehen ist, dass die Federzungen in einem zylindrischen Gehäuse auf der Platine angeordnet sind. Bei eingeführtem Stift befinden sich die Federzungen radial an der Innenwandung des Gehäuses, d. h., die Federzungen stützen sich endseitig federnd an der Gehäuseinnenwand ab, was dazu führt, dass der Stift in gutem elektrischen Kontakt mit den Federzungen steht. Durch einen solchen strammen Sitz der Federzungen an dem Stift wird im Übrigen auch ein stabiler Sitz des Stiftes in dem durch die Federzungen gebildeten Kontaktelement in Verbindung mit den die Federzungen umgebenden Gehäuse bewirkt.As already explained elsewhere, each pin is on the one hand with the winding material, and on the other hand with the board by a contact element in electrical connection. The formation of such a contact element is advantageously made according to a feature of the invention such that the contact element is designed as a spring wreath. Such a spring ring advantageously comprises a plurality of circularly arranged spring tongues, which contact the pin end. The spring tongue itself is in this case attached directly to the board, wherein it is advantageously provided according to an embodiment that the spring tongues are arranged in a cylindrical housing on the board. When inserted pin, the spring tongues are radially on the inner wall of the housing, d. h., The spring tongues are supported at the end resiliently on the housing inner wall, resulting in that the pin is in good electrical contact with the spring tongues. By such a tight fit of the spring tongues on the pin a stable seat of the pin is also effected in the contact element formed by the spring tongues in connection with the housing surrounding the spring tongues.

Nach dem Stand der Technik war es so, dass zur elektrischen Verbindung des Kontaktstiftes mit der Platine die sogenannten "Stützfüßchen" vorgesehen sind, die mittels Schrauben mit dem Stift verbindbar sind. Eine solche Schraubverbindung setzt voraus, dass die Schraube mit ihrem Schraubenkopf von außen zugänglich ist. Das heißt, mit einer Kontaktierung der erfindungsgemäßen Art sind auch Montagen von Drosseln an Platinen an für Schraubenzieher oder Werkzeug allgemein unzugänglichen Stellen möglich, da die Stifte lediglich in den Federkranz eingeschoben werden müssen. Die erfindungsgemäße Kontaktierung ist darüber hinaus relativ schnell durchzuführen, da es sich hierbei um eine werkzeuglose Kontaktierung handelt. Des Weiteren ist die Kontaktierung überaus stabil, ohne die Platine zu belasten, da einerseits durch die schwimmende Lagerung des Stiftes und andererseits durch die Kontaktierung des Stiftes durch den Federkranz Erschütterungen weitestgehend abgefangen werden können, ohne dass sich diese auf die Platine übertragen. Die Kontaktierungen können sich auch nicht lösen, sodass auch aus diesem Grunde eine solche elektrische Verbindung überaus sicher ist. Weiterhin besteht nicht die Gefahr, bei der Montage eine Schraubverbindung zu vergessen, da - wie bereits ausgeführt - der elektrische Kontakt unmittelbar bereits dann hergestellt ist, wenn die Drossel mit ihrem Gehäuse in den Wechselrichter eingebaut ist. Es entfällt somit die gesonderte Kontaktierung der Stifte mit den Kontaktfüßchen, wie dies beschrieben wurde. Insofern wird hierdurch auch die Montagesicherheit erhöht.According to the prior art, it was so that the so-called "Stützfüßchen" are provided for electrical connection of the contact pin with the board, which are connectable by means of screws with the pin. Such a screw connection requires that the screw with its screw head is accessible from the outside. That is, with a contact of the type according to the invention and assemblies of throttles on boards to screwdrivers or tools generally inaccessible places are possible because the pins only in the spring ring must be inserted. The contacting according to the invention is also relatively quick to carry out, since this is a tool-free contacting. Furthermore, the contact is extremely stable, without burdening the board, as on the one hand by the floating support of the pin and on the other hand by the contact of the pin through the spring ring shocks can be largely intercepted, without this transmitted to the board. The contacts can not solve either, so that for this reason such an electrical connection is extremely safe. Furthermore, there is no risk to forget a screw during assembly, since - as already stated - the electrical contact is already made directly when the throttle is installed with its housing in the inverter. It thus eliminates the separate contact of the pins with the Kontaktfüßchen, as has been described. In this respect, this also increases the mounting security.

Gegenstand der Erfindung ist auch ein Wechselrichter, aufweisend mindestens ein elektrisches Wickelgut und mindestens eine Platine mit einer elektrischen Verbindung zwischen Wickelgut und Platine gemäß einem oder mehreren der zuvor abgehandelten Merkmale.The invention also provides an inverter, comprising at least one electrical winding material and at least one circuit board with an electrical connection between the winding material and the circuit board according to one or more of the previously discussed features.

Anhand der Zeichnungen wird die Erfindung nachstehend beispielhaft näher erläutert.

Figur 1
zeigt die Art der Verbindung nach dem Stand der Technik;
Figur 2
zeigt die erfindungsgemäß Lagerung des Kontaktstiftes in der Lagerbuchse in einer Seitenansicht im Schnitt;
Figur 3a, 3b
zeigen einen als Lagerbuchse ausgebildeten Ring an dem Gehäuse;
Figur 3c
zeigt den Ring oder die Hülse im Einbauzustand der Lagerbuchse zur Aufnahme des Kontaktstiftes;
Figur 4a
zeigt die Ausbildung des Federkranzes zur Kontaktierung des Kontaktstiftes auf der Platine;
Figur 4b
zeigt den Federkranz in dem zylindrischen Gehäuse im Schnitt;
Figur 5
zeigt schematisch das Wickelgut im mit der Platine verbundenen Zustand.
With reference to the drawings, the invention will be explained in more detail below by way of example.
FIG. 1
shows the type of connection according to the prior art;
FIG. 2
shows the inventive storage of the contact pin in the bearing bush in a side view in section;
Figure 3a, 3b
show a trained as a bearing bush ring on the housing;
Figure 3c
shows the ring or the sleeve in the installed state of the bearing bush for receiving the contact pin;
FIG. 4a
shows the formation of the spring ring for contacting the contact pin on the board;
FIG. 4b
shows the spring ring in the cylindrical housing in section;
FIG. 5
schematically shows the winding material connected to the board state.

Gemäß Figur 1 ist der Stand der Technik dargestellt, wie er zur elektrischen Kontaktierung einer Drossel mit einer Platine vorgenommen wird. Das Gehäuse der Drossel ist mit 1 bezeichnet. In dem Gehäuse der Drossel sitzt die mit 2 bezeichnete Lagerbuchse ein, die den Kontaktstift 3 längs verschieblich aufnimmt. Hierzu weist der Kontaktstift 3 einen Bund 3a auf, der in einer entsprechenden Nut 2a der Buchse 2 einsitzt. Die insgesamt mit 5 bezeichnete Platine zeigt die Stützfüßchen 6, die jeweils der Aufnahme der Schraube 7 dient, die in das stirnseitige Innengewinde des Stiftes 3 eindrehbar ist, und insofern die Kontaktierung zwischen dem Stützfüßchen 6 einerseits und dem Kontaktstift 3 andererseits vornimmt. Die elektrische Verbindung des Kontaktstiftes 3 mit der Wicklung der Drossel ist nicht dargestellt.According to FIG. 1 the prior art is shown as it is made for electrically contacting a throttle with a circuit board. The housing of the throttle is designated 1. In the housing of the throttle sits with the designated bearing bush 2, which receives the contact pin 3 longitudinally displaceable. For this purpose, the contact pin 3 has a collar 3a which is seated in a corresponding groove 2a of the socket 2. The generally designated 5 board shows the Stützfüßchen 6, each of which serves to receive the screw 7, which is screwed into the frontal internal thread of the pin 3, and insofar makes the contact between the Stützfüßchen 6 on the one hand and the contact pin 3 on the other. The electrical connection of the contact pin 3 with the winding of the throttle is not shown.

Erkennbar ist, dass das Innengewinde des Stiftes 3 fluchtend mit der Bohrung in dem Stützfüßchen 6 liegen muss, soll die Verbindung zwischen dem Gehäuse 1 des Wickelgutes und der Platine erfolgen. Liegen die beiden Teile, also die Buchse des Gehäuses und das Stützfüßchen mit der Bohrung für die Schraube auf der Platine, nicht fluchtend zueinander, so kann eine Verbindung nicht erfolgen. Es muss dann vielmehr nachgearbeitet werden, um eine solche Verbindung schlussendlich zu ermöglichen, oder aber die Schraube wird gegen die Platine verspannt. Bei der Darstellung einer ersten Ausführungsform einer schwimmenden Lagerung gemäß Figur 2 ist die mit 2 bezeichnete Lagerbuchse an dem Gehäuse 1 derart ausgebildet, dass diese eine obere Öffnung 10 aufweist, aus der der Stift 3 austritt. In der Lagerbuchse 2 bzw. in der Öffnung 10 der Lagerbuchse sind Haltearme 12 angeordnet, die endseitig einen Bund 13 aufweisen, wobei der Bund 13 in die Nut 3a des Stiftes 3 eingreift. Wesentlich hierbei ist, dass der Bund 13 in der Höhe von seinen Abmessungen her geringer ist, als die Länge der Nut 3a, sodass der Stift axial in Richtung des Doppelpfeils 20 beweglich ist.It can be seen that the internal thread of the pin 3 must be flush with the hole in the Stützfüßchen 6, the connection between the housing 1 of the winding material and the board should be made. If the two parts, so the socket of the housing and the support legs with the hole for the screw on the board, not aligned with each other, so a connection can not be made. Rather, it must then be reworked to allow such a connection in the end, or the screw is clamped against the board. In the illustration of a first embodiment of a floating storage according to FIG. 2 the bearing bushing designated 2 is formed on the housing 1 such that it has an upper opening 10 from which the pin 3 exits. In the bearing bush 2 and in the opening 10 of the bearing bush holding arms 12 are arranged, the end having a collar 13, wherein the collar 13 engages in the groove 3 a of the pin 3. It is essential here that the collar 13 is smaller in height than the length of the groove 3 a, so that the pin is movable axially in the direction of the double arrow 20.

Des Weiteren sind am oberen Ende der Öffnung 10 der Lagerbuchse 2 umfangsverteilt kreisförmig mehrere Zentrierfinger 15 angeordnet, die aufgrund ihrer Eigenelastizität den Stift 3 zentrisch etwa mittig halten, wie sich dies in Anschauung von Figur 2 ergibt. Die einzelnen Finger 15 besitzen einen Abstand X zur Seitenwand der Lagerbuchse 2, wobei der Abstand X schlussendlich definiert, mit welchem Winkel der Stift 10 entsprechend dem Doppelpfeil 25 verschwenkbar ist. Da auch die Haltearme 12 federnd nachgiebig ausgebildet sind, und auch seitlich ausweichen können, ist ein zum Rand der Buchse mit dem Abstand X korrespondierender Abstand Y vorgesehen, sodass auch hierdurch die Beweglichkeit des Stiftes 3 gegeben ist.Furthermore, at the upper end of the opening 10 of the bearing bush 2, circumferentially distributed, a plurality of centering fingers 15 are arranged, which due to their inherent elasticity keep the pin 3 centrally approximately centrally, as can be seen in FIG FIG. 2 results. The individual fingers 15 have a distance X to the side wall of the bearing bush 2, wherein the distance X finally defines the angle at which the pin 10 can be pivoted in accordance with the double arrow 25. Since the retaining arms 12 are formed resiliently, and can also move laterally, a corresponding to the edge of the socket with the distance X distance Y is provided, so that also the mobility of the pin 3 is given.

Es sei an dieser Stelle darauf hingewiesen, dass die Zentrierfinger 15 lediglich der besseren Zentrierung dienen. Die eigentliche schwimmende Lagerung wird durch die Haltearme 12 in der Lagerbuchse bereitgestellt. Das heißt, die Zentrierfinger 15 richten den Stift 3 senkrecht zur Oberseite der Buchse aus, sodass er in die entsprechende Öffnung in der Platine einläuft.It should be noted at this point that the centering fingers 15 serve only the better centering. The actual floating bearing is provided by the support arms 12 in the bearing bush. That is, the centering fingers 15 align the pin 3 perpendicular to the top of the socket so that it enters the corresponding opening in the board.

In einer Variante zu der Ausführungsform gemäß der Figur 2 ist, wie aus Figur 3a und Figur 3b ersichtlich, eine die Lagerbuchse 2 bildende Hülse 30 vorgesehen, wobei die Hülse 30 im Inneren einen Haltering 35 aufweist, der segmentiert ist. Die einzelnen Segmente 36 sind durch elastisch nachgiebige Arme 37 an der Hülse 30 befestigt. Der von dem segmentierten Haltering 35 aufgenommene Stift 3 liegt im Bereich seiner Nut 3a in dem segmentierten Haltering 35 (Fig. 3c) ein. Da die Arme 37 tangential verlaufend in der Hülse 30 angeordnet sind, ergibt sich eine gewisse radiale Beweglichkeit des Halteringes 35 bzw. der einzelnen Segmente 36, sofern der Haltering 35 segmentiert ist. Denkbar hierbei ist auch eine Lösung, bei der der Haltering in sich elastisch nachgiebig ausgebildet ist, und insofern in die Nut des Stiftes einschnappt. Bei einer solchen Ausführungsform können ebenfalls auch elastisch nachgiebige Arme 37, wie zuvor beschrieben, vorgesehen sein.In a variant of the embodiment according to the FIG. 2 is how out Figure 3a and 3b can be seen, a bearing bush 2 forming sleeve 30th provided, wherein the sleeve 30 has inside a retaining ring 35 which is segmented. The individual segments 36 are fastened to the sleeve 30 by elastically yielding arms 37. The pin 3 received by the segmented retaining ring 35 lies in the region of its groove 3a in the segmented retaining ring 35 (FIG. Fig. 3c ) one. Since the arms 37 are arranged tangentially extending in the sleeve 30, there is a certain radial mobility of the retaining ring 35 and the individual segments 36, provided that the retaining ring 35 is segmented. Conceivable here is also a solution in which the retaining ring is formed elastically resilient in itself, and thus snaps into the groove of the pin. In such an embodiment, elastically compliant arms 37 may also be provided as previously described.

Die Kontaktierung des Stiftes 3 auf der Platine 5 erfolgt durch den Federkranz 40. Der Stift 3, der am unteren Ende durch die Lagerbuchse 2 gehalten ist, ragt im oberen Bereich in den Federkranz 40 hinein und überragt diesen mit seiner Spitze. Der Federkranz 40 besteht aus einzelnen Federzungen 41, die kreisförmig auf der Platine um den Stift 3 herum angeordnet sind und konisch aufeinander zulaufend ausgebildet sind. Die Federzungen stehen mit den Leiterbahnen der Platine in Verbindung. Die Federzungen 41 besitzen endseitig jeweils Vorsprünge 41 a, mit denen die Federzungen 41 an der Innenwandung des zylindrischen Gehäuses 45 (Figur 4b) federnd anliegen, wenn in den Federkranz der Stift hineinragt. Das heißt, dass beim Durchtritt des Stiftes 3 durch den Federkranz die Federzungen 41 entgegen ihrer Federkraft nach außen gedrückt werden, sodass eine sichere elektrische Kontaktierung des Stiftes durch den Federkranz 40 mit der Platine 5 gegeben ist.The contact of the pin 3 on the board 5 is effected by the spring ring 40. The pin 3, which is held at the lower end by the bearing bush 2, protrudes in the upper region in the spring ring 40 and projects beyond this with its tip. The spring ring 40 consists of individual spring tongues 41, which are arranged in a circle on the board around the pin 3 around and are formed conically tapered to each other. The spring tongues are connected to the printed conductors of the board. The spring tongues 41 have each end projections 41 a, with which the spring tongues 41 on the inner wall of the cylindrical housing 45 (FIGS. FIG. 4b ) abut resiliently when protruding into the spring ring of the pen. This means that the spring tongues 41 are pressed against the spring force to the outside during the passage of the pin 3 by the spring ring, so that a secure electrical contact of the pin is given by the spring ring 40 with the board 5.

Claims (17)

Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5), umfassend mehrere Kontaktstifte (3), die an dem Gehäuse (1) angeordnet sind, wobei jeder Stift (3) einerseits mit dem Wickelgut und andererseits durch ein Kontaktelement (40) mit der Platine (5) in elektrischer Verbindung steht,
dadurch gekennzeichnet,
dass jeder Stift (3) in dem Gehäuse (1) durch eine Lagerbuchse (2, 30) schwimmend gehalten ist.Electrical connection between the housing (1) of a winding material and a circuit board (5) comprising a plurality of contact pins (3) which are arranged on the housing (1), each pin (3) on the one hand with the winding material and on the other hand by a contact element (3). 40) is in electrical connection with the circuit board (5),
characterized,
in that each pin (3) is held floating in the housing (1) by a bearing bush (2, 30). Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach Anspruch 1,
dadurch gekennzeichnet,
dass der Stift (3) schwenkbar durch die Lagerbuchse (2, 30) aufgenommen ist.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to claim 1,
characterized,
that the pin (3) is pivotally received by the bearing bush (2, 30). Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet,
dass der Stift (3) parallel zur Längsachse des Stiftes (3) verschieblich durch die Lagerbuchse (2, 30) aufnehmbar ist.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to one of the preceding claims,
characterized,
that the pin (3) parallel to the longitudinal axis of the pin (3) displaceable by the bearing bush (2, 30) is receivable. Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet,
dass die Lagerbuchse (2, 30) mehrere radial auf dem Umfang des Stiftes (3) angreifende, elastisch nachgiebige Haltearme (12) aufweist, wobei der Stift (3) gegen die Haltearme (12) seitlich beweglich durch die Lagerbuchse (2) gehalten ist.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to one of the preceding claims,
characterized,
in that the bearing bush (2, 30) has a plurality of elastically yielding retaining arms (12) engaging radially on the circumference of the pin (3), the pin (3) being held laterally movably by the bearing bush (2) against the retaining arms (12) , Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach Anspruch 4,
dadurch gekennzeichnet,
dass der Stift (3) auf dem Umfang eine Nut (3a) aufweist, in die die Haltearme (12) eingreifen.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to claim 4,
characterized,
in that the pin (3) has on its circumference a groove (3a) into which the retaining arms (12) engage. Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach den Ansprüchen 5 und 6,
dadurch gekennzeichnet,
dass die Haltearme (12) jeweils endseitig einen Bund (12a) aufweisen, der in die Nut (3a) des Stiftes (3) eingreift.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to claims 5 and 6,
characterized,
in that the retaining arms (12) each have a collar (12a) at the end which engages in the groove (3a) of the pin (3). Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet,
dass die axiale Erstreckung der Nut (3a) größer ist, als die Höhe des Bundes (12a) des jeweiligen Haltearms (12), um die axiale Beweglichkeit des Stiftes (3) in der Lagerbuchse (2) zu gewährleisten.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to one of the preceding claims,
characterized,
that the axial extent of the groove (3a) is greater than the height of the collar (12a) of the respective support arm (12) to ensure the axial mobility of the pin (3) in the bearing bush (2). Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet,
dass oberhalb der Haltearme (12) in der Lagerbuchse (2) mehrere Zentrierstifte (15) umfangsverteilt um den Stift (3) herum angeordnet sind.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to one of the preceding claims,
characterized,
that above the retaining arms (12) in the bearing bush (2) a plurality of centering pins (15) circumferentially distributed around the pin (3) are arranged around. Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet,
dass die Lagerbuchse eine Hülse (30) umfasst, wobei die Hülse (30) einen insbesondere segmentierten Haltering (35) aufweist, wobei der Haltering (35) durch elastisch nachgiebige Arme (37) gegen die Hülse (30) gehalten ist.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to one of the preceding claims,
characterized,
in that the bearing bush comprises a sleeve (30), wherein the sleeve (30) has a particular segmented retaining ring (35), wherein the Retaining ring (35) by resilient arms (37) is held against the sleeve (30). Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach Anspruch 9,
dadurch gekennzeichnet,
dass die Arme (37) tangential verlaufend in der Hülse (30) angeordnet sind.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to claim 9,
characterized,
that the arms (37) are arranged tangentially extending in the sleeve (30). Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach Anspruch 10,
dadurch gekennzeichnet,
dass das Kontaktelement als Federkranz (40) ausgebildet ist.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to claim 10,
characterized,
that the contact element is designed as a spring ring (40). Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach Anspruch 11,
dadurch gekennzeichnet,
dass der Federkranz (40) mehrere kreisförmig angeordnete Federzungen (41) umfasst, die den Stift (3) endseitig kontaktieren.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to claim 11,
characterized,
that the spring ring (40) comprises a plurality of circularly arranged spring tongues (41) which contact the pin (3) at the end. Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach Anspruch 12,
dadurch gekennzeichnet,
dass die Federzungen (41) an der Platine (5) befestigt sind.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to claim 12,
characterized,
in that the spring tongues (41) are fastened to the circuit board (5). Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach Anspruch 12,
dadurch gekennzeichnet,
dass die Federzungen (41) in elektrischer Verbindung mit einer Leiterbahn der Platine (5) stehen.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to claim 12,
characterized,
that the spring tongues (41) are in electrical communication with a conductor track of the circuit board (5). Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach Anspruch 12,
dadurch gekennzeichnet,
dass die Federzungen (41) in einem zylindrischen Gehäuse (45) auf der Platine (5) angeordnet sind.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to claim 12,
characterized,
in that the spring tongues (41) are arranged in a cylindrical housing (45) on the circuit board (5). Elektrische Verbindung zwischen dem Gehäuse (1) eines Wickelgutes und einer Platine (5) nach Anspruch 14,
dadurch gekennzeichnet,
dass sich die Federzungen (41) radial an der Innenwandung des Gehäuses (45) im eingeführten Zustand des Stiftes (3) abstützen.Electrical connection between the housing (1) of a winding material and a circuit board (5) according to claim 14,
characterized,
in that the spring tongues (41) are supported radially on the inner wall of the housing (45) in the inserted state of the pin (3). Wechselrichter aufweisend mindestens ein elektrisches Wickelgut und mindestens eine Platine (5) mit einer elektrischen Verbindung zwischen Wickelgut und Platine (5) gemäß einem oder mehreren der Ansprüche 1 bis 16.Inverter comprising at least one electrical winding material and at least one circuit board (5) with an electrical connection between the winding material and the circuit board (5) according to one or more of claims 1 to 16.
EP20090011403 2009-09-05 2009-09-05 Electrical connection between the housing of a coil winding and a board Active EP2293390B1 (en)

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PCT/EP2010/062981 WO2011026950A1 (en) 2009-09-05 2010-09-03 Electrical connection between an electric winding material and conductors of a printed circuit board

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