EP2837061B1 - Contacting device for connecting an electrical conductor - Google Patents

Contacting device for connecting an electrical conductor Download PDF

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Publication number
EP2837061B1
EP2837061B1 EP13717483.5A EP13717483A EP2837061B1 EP 2837061 B1 EP2837061 B1 EP 2837061B1 EP 13717483 A EP13717483 A EP 13717483A EP 2837061 B1 EP2837061 B1 EP 2837061B1
Authority
EP
European Patent Office
Prior art keywords
electrical conductor
side wall
contacting device
connection contact
base surface
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.)
Active
Application number
EP13717483.5A
Other languages
German (de)
French (fr)
Other versions
EP2837061A1 (en
Inventor
Cem Som
Gino YANG
Park CAI
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.)
TDK Electronics AG
Original Assignee
TDK Electronics AG
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 TDK Electronics AG filed Critical TDK Electronics AG
Publication of EP2837061A1 publication Critical patent/EP2837061A1/en
Application granted granted Critical
Publication of EP2837061B1 publication Critical patent/EP2837061B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01R4/58—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
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • H01R4/625—Soldered or welded connections
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • 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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0235—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections for applying solder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49174—Assembling terminal to elongated conductor
    • Y10T29/49179—Assembling terminal to elongated conductor by metal fusion bonding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49174—Assembling terminal to elongated conductor
    • Y10T29/49181—Assembling terminal to elongated conductor by deforming
    • Y10T29/49183—Assembling terminal to elongated conductor by deforming of ferrule about conductor and terminal

Definitions

  • the invention relates to a contacting device for connecting an electrical conductor, a coil body and an inductive electrical component.
  • the invention also relates to a method for connecting an electrical conductor to a contacting device of a coil former.
  • Such electronic components include inductive components, for example bobbins, which are wound with an electrical conductor.
  • the coil body can have a contacting device with contact elements.
  • the contact elements can be, for example, contact pins with which an inductive component that contains the coil body can be connected to other components of an electronic circuit.
  • Prior art contacting devices are disclosed in US Pat US6142817 A , the US5759061 A , the US2010 / 035484 A1 , the US5911593 A and the JPS5792762 A .
  • An electrical conductor that is wound on the bobbin must be connected to the contacting device with the contact pin.
  • Such an electrical conductor can be, for example, a stranded wire or an enamelled wire.
  • the connection of the electrical conductor can be particularly difficult if the electrical conductor has a larger cross section than the outer contact elements / contact pins of the coil former.
  • a contacting device for connecting an electrical conductor with which it is possible to connect the electrical conductor to the contacting device in an easy-to-use manner and reliably. Furthermore, there is a need to specify a bobbin for winding with an electrical conductor, in which an electrical conductor can be connected to a contacting device of the bobbin in a reliable and easy-to-use manner. Furthermore, an inductive electrical component, in particular a coil or a transformer, is to be specified, in which an electrical conductor can be connected to a contacting device in a reliable and easy-to-use manner. In addition, a method for connecting an electrical conductor to a contacting device of a coil body is to be specified.
  • a contacting device according to the invention for connecting an electrical conductor is specified in claim 1.
  • a contacting device for connecting an electrical conductor comprises a connection contact for fixing the electrical conductor to the contacting device, the connection contact having a holder.
  • the holder has a receiving area for receiving the electrical conductor.
  • the holder is designed in such a way that the electrical conductor can be connected to the connection contact by being clamped in the holder and without bending the holder.
  • the receiving area has an entry opening and a bottom surface and extends between the entry opening and the bottom surface. The receiving area tapers between the inlet opening and the bottom surface in such a way that when the electrical conductor is inserted into the receiving area, a cross section of the electrical conductor is deformed, whereby the electrical conductor is held in a press fit on the connection contact.
  • the electrical conductor can be connected to the connection contact in a press fit by manually or automatically pressing it into the receiving area due to the deformation and the voltage that occurs in the process.
  • the receiving area can have a trapezoidal cross-section.
  • the receiving area has at least one first side wall and at least one second side wall, the at least one first and the at least one second side wall extending from opposite sides of the bottom surface to the inlet opening.
  • the first and second side walls are arranged between the inlet opening and the bottom surface in such a way that the receiving area tapers continuously from the inlet opening to the bottom surface.
  • the holder is designed in such a way that the electrical conductor can be fixed on the holder without bending the at least one first and the at least one second side wall.
  • a corner can be formed between the at least one first side wall and the bottom surface and between the at least one second side wall and the bottom surface.
  • the at least one first side wall and the at least one second side wall can each be arranged at an angle of inclination between 5 ° and 15 ° with respect to a perpendicular to the floor surface.
  • the angle of inclination is preferably 5 ° to 7 °.
  • the distance between the at least one first side wall and the at least one second side wall directly below the inlet opening can be greater than the width of the bottom surface between the at least one first side wall and the at least one second side wall.
  • the ratio between the distance between the at least one first side wall and the at least one second side wall immediately below the inlet opening and the width of the bottom surface between the at least one first and the at least one second side wall can be 1.2 to 3.
  • the holder has at least one projection which narrows the entry opening into the receiving area. If the electrical conductor is initially still loosely inserted into the receiving area of the holder through the entry opening, the projection prevents the conductor from slipping out of the receiving area.
  • the projection can be designed in the form of hooks.
  • the projection can be formed, for example, by two hooks, the distance between the two hooks or projections preferably being adapted to the cross section of the electrical conductor.
  • the projections can thus, for example, cause a clamping or fixation in an x-direction, in the direction of the normal to the floor surface.
  • the receiving area can be designed as a material recess in the form of a groove in the material of the connection contact.
  • the material recess can be shaped in such a way that the cross section of the electrical conductor when pressed in of the conductor in the receiving area is deformed with a force or when the electrical conductor is pressed against the bottom surface and the side walls of the receiving area in the material recess and is thereby held in a press fit in the receiving area.
  • the inner surface of the recess must be adapted to a cross section of the electrical conductor.
  • the recess can be designed, for example, in such a way that a previously approximately round cross section of the electrical conductor is deformed when the conductor is pressed into the receiving area and thus the electrical conductor can also be fixed in a z-direction perpendicular to the x-direction.
  • the contacting device further comprises a contact pin for applying an electrical signal.
  • the connection contact and the contact pin are connected to one another and formed from the same piece of material.
  • a bobbin for winding with an electrical conductor is defined.
  • the coil body comprises a contacting device according to the invention for connecting the electrical conductor.
  • the contacting device can, for example, be embedded in the material of the coil body.
  • the contacting device can be encapsulated by the material of the bobbin or cast into the material of the bobbin.
  • an inductive electrical component in particular a coil or a transformer
  • the component comprises the coil body of the aforementioned type, the coil body being wound with the electrical conductor.
  • the electrical conductor is held in a press fit in the receiving area of the connection contact.
  • the Electrical conductors can be designed as a stranded or enamelled wire with a cross section between 0.05 mm 2 and 95 mm 2 , for example with a cross section of 1.6 mm 2 .
  • the electrical conductor After being inserted through the entry opening into the receiving area, the electrical conductor is initially fixed by the projection in a first direction parallel to the vertical on the bottom surface of the receiving area, so that the electrical conductor can no longer slide out of the receiving area. The electrical conductor is then fixed to the connection contact by pressing it against the bottom surface in a second direction perpendicular to the first direction. The electrical conductor can be fixed to the connection contact in such a way that one end of the electrical conductor protrudes from the holder. To make electrical contact between the conductor and the connection contact, a soldering material is applied to the end of the electrical conductor. As a result, an insulating sheath melts the conductive wires of the electrical conductor, whereby the end of the electrical conductor is electrically contacted with the connection contact.
  • FIG. 1A, 1B , 1C and 1D an embodiment according to the invention of a contacting device 100 for connecting an electrical conductor is shown.
  • the figures show different views of the contacting device.
  • the contacting device 100 comprises a connection contact 101 for fixing the electrical conductor.
  • the connection contact 101 has a holder 110 for this purpose.
  • the holder 110 is designed in such a way that the electrical conductor can be connected to the connection contact 101 by being clamped in the holder 110, without the holder having to be deformed for this purpose.
  • the holder 110 can have a receiving area 112 for receiving the electrical conductor.
  • the receiving area 112 has an inlet opening E112 and a bottom surface B112.
  • the receiving area 112 extends between the inlet opening E112 and the bottom surface B112.
  • the receiving area 112 tapers between the inlet opening E112 and the bottom surface B112 in such a way that when it is inserted of the electrical conductor 11 is deformed into the receiving region 112, a cross section A11 of the electrical conductor 11, as a result of which the electrical conductor is held in a press fit on the connection contact 101.
  • Figure 1C shows the electrical conductor 11, which is deformed when it is clamped in the holder 110. By deforming its cross section A11, the electrical conductor 11 can be fixed to the connection contact.
  • the holder 110 can have at least one projection 111 which narrows the inlet opening E112 into the receiving area 112.
  • This material projection can be arranged above the receiving area 112.
  • two material projections 1111 and 1112 can also be provided, which delimit or constrict the inlet opening E112 into the receiving area 112.
  • the holder 110 can be designed as a material recess or groove in the material of the connection contact 101.
  • the area A112 of the receiving area 112 is adapted to the cross section of the electrical conductor to be clamped.
  • the recess can be shaped, for example, in such a way that the area A112 corresponds at least to the cross section of the electrical conductor.
  • the recess or groove of the holder 110 can be V-shaped in cross section or, as in FIG Figures 1A, 1B , 1C and 1D is shown to be trapezoidal.
  • the receiving area 112 can have at least a first and a second side wall.
  • the receiving area 112 has the side walls S112a and S112b.
  • the bottom surface can be designed as a flat surface.
  • a corner is formed between the side walls S112a, S112b and the flat bottom surface.
  • the side walls S112a, S112b extend from opposite sides of the bottom surface B112 as far as the inlet opening E112.
  • the side walls can be arranged at an angle of inclination to the floor surface, so that the receiving area 112 tapers continuously starting from the inlet opening E112 as far as the floor surface B112.
  • the holder 110 is designed by the projection 111 to fix the electrical conductor in an x-direction, perpendicular to the normal, on the floor surface B112 when the electrical conductor is inserted into the receiving area.
  • the projection can do this in the Figures 1A to 1D have hooks 1111, 1112 shown. When it is inserted into the receiving area, it is thus ensured that the electrical conductor does not slip out of the receiving area 112 again.
  • the holder 110 is also designed to fix the electrical conductor in a z-direction when it is pressed further into the receiving area 112, the x and z directions being oriented orthogonally to one another.
  • the cross section A11 of the electrical conductor is first deformed by the projection 111 and then by the shape of the receiving area 112.
  • the distance between the projections 1111 and 1112 can be between 70% and 85% of the diameter of the electrical conductor.
  • the distance should can be selected such that when the electrical conductor is pressed into the receiving area 112, a wire of the electrical conductor is not injured.
  • the receiving area 112 can be wider directly below the inlet opening than directly above the floor surface.
  • the receiving area 112 can be designed in such a way that a ratio of an outer dimension da, which indicates a distance between the side walls S112a, S112b directly below the inlet opening E112, to an inner dimension di, which indicates a width of the bottom surface between the side walls S112a, S112b, for example 1.2 to 3.
  • the side walls S112a, S112b can be arranged on the floor surface at an angle of inclination between 5 ° and 15 ° with respect to a perpendicular to the floor surface. It has proven to be particularly advantageous for clamping the electrical conductor 11 in the receiving area 112 if the angle between the perpendicular to the bottom surface B112 and the side walls is 5 ° to 7 °.
  • the contacting device 100 further comprises a contacting element 102 for applying an electrical signal to the contacting device.
  • the contacting element 102 can be designed, for example, as a contact pin / contact pin.
  • the connection contact 101 is electrically connected to the contact pin 102.
  • the holder 110 only has a trapezoidal receiving area 112 into which the electrical conductor 11 is clamped by deformation of its cross section, so that it is fixed to the connection contact 101.
  • connection contact 101 of the contacting device 100, in which the connection contact 101 each has a projection 111 and a receiving area 112. It is noted that the Figures 2B and 2C The embodiments shown do not show embodiments of a connection contact according to the invention.
  • the holder 110 comprises two projections 1111 and 1112, which narrow the inlet opening E112 into the receiving area 112 of the holder 110.
  • the projections 1111, 1112 face inwardly in the direction of the receiving area 112.
  • the receiving area has a bulge under each of the projections 1111, 1112.
  • the receiving area 112 is made wider in the upper area and is narrower in the lower area towards the bottom surface B112 in order to deform the cross section of an inserted electrical conductor.
  • connection contact 110 has legs 114, 115 arranged on a bottom part 113.
  • the two legs are bent upwards towards one another under tension, so that the inlet opening E112 is narrowed into the receiving area 112.
  • the two legs 114, 115 are bent apart and the electrical conductor is inserted through the entry opening into the receiving area. Because of the voltage, the two legs then clamp the electrical conductor within the receiving area between the legs and the bottom surface B112, so that the electrical conductor is fixed.
  • FIGS. 2D and 2E each show embodiments of the connection contact 101 of the contacting device 100, at which the connection contact 101 has a holder 110 with a receiving area 112. However, the holder 110 only has one projection 111 which narrows the inlet opening E112 into the receiving area 112.
  • a projection 1111 extends from the left side over the receiving region 112, while in the case of the embodiment shown in FIG Figure 2E In the embodiment shown, a projection 1112 extends from the right-hand side over the receiving region 112.
  • Figure 3 shows a coil body 10 or an inductive electrical component 1 with a contacting device 100 according to one of the above-mentioned embodiments.
  • the coil body 10 can be formed from a material made of plastic, for example, and the contacting device 100 can be formed from a metal.
  • the contacting device 100 can be cast into the material of the coil body 10 or the material of the coil body 10 is overmolded.
  • one end of the electrical conductor can first be fixed to the connection contact 101 of the contacting device 100, while the rest of the conductor is wound around the coil body. Because the end of the electrical conductor is fixed in the x and z directions, the electrical conductor can be wound around the bobbin with a tensile force.
  • the projections of the holder prevent the electrical conductor from sliding out of the receiving area, while the shape of the receiving area is tapered towards the bottom surface prevents the conductor from slipping out in the z-direction.
  • the other free end of the electrical conductor can be connected to a contacting device provided on the coil body 10 adjacent to the contacting device 100.
  • the free end of the electrical conductor is clamped into the receiving area of the connection contact of this adjacent contacting device.
  • the ends of the electrical conductor are then shortened and can, for example, be soldered to the respective connection contact of the contacting devices.
  • an inductive electrical component 1 for example a coil or a transformer, can be formed.
  • the electrical conductor 11 can be, for example, a stranded wire or also an enamelled wire.
  • the stranded wire or the enamelled wire can be mechanically fixed to the connection contact of the contacting device before the actual soldering process. In order to connect the electrical conductor to the contacting device, therefore, no complicated and costly designed holders are necessary.
  • the connection / termination of the electrical conductor to the contacting device can be done manually or in an automated manner.
  • the contacting device makes it possible, in particular, to use stranded wires or enameled wires with a larger cross section than the cross section of the contacting element / contacting pins to be fixed on the contacting device.
  • stranded or enamelled wires with a cross section of 1.6 mm 2 can be electrically connected to a contact pin with a cross section of 1 mm 2 .

Description

Die Erfindung betrifft eine Kontaktierungsvorrichtung zum Anbinden eines elektrischen Leiters, einen Spulenkörper und ein induktives elektrisches Bauelement. Des Weiteren betrifft die Erfindung ein Verfahren zum Anbinden eines elektrischen Leiters an eine Kontaktierungsvorrichtung eines Spulenkörpers.The invention relates to a contacting device for connecting an electrical conductor, a coil body and an inductive electrical component. The invention also relates to a method for connecting an electrical conductor to a contacting device of a coil former.

In elektronischen Schaltungen und bei elektronischen Bauelementen ist es oftmals erforderlich, elektrische Leiter an eine Kontaktierungsvorrichtung anzubinden. Zu derartigen elektronischen Bauelementen gehören induktive Bauteile, beispielsweise Spulenkörper, die mit einem elektrischen Leiter bewickelt sind. Zur Kontaktierung kann der Spulenkörper eine Kontaktierungsvorrichtung mit Kontaktelementen aufweisen. Die Kontaktelemente können beispielsweise Kontaktpins sein, mit denen ein induktives Bauelement, das den Spulenkörper enthält, mit weiteren Bauelementen einer elektronischen Schaltung verbunden werden kann. Kontaktierungsvorrichtungen aus dem Stand der Technik sind offenbart in der US6142817 A , der US5759061 A , der US2010/035484 A1 , der US5911593 A und der JPS5792762 A .In electronic circuits and electronic components, it is often necessary to connect electrical conductors to a contacting device. Such electronic components include inductive components, for example bobbins, which are wound with an electrical conductor. For contacting, the coil body can have a contacting device with contact elements. The contact elements can be, for example, contact pins with which an inductive component that contains the coil body can be connected to other components of an electronic circuit. Prior art contacting devices are disclosed in US Pat US6142817 A , the US5759061 A , the US2010 / 035484 A1 , the US5911593 A and the JPS5792762 A .

Ein elektrischer Leiter, der auf dem Spulenkörper aufgewickelt ist, muss an die Kontaktierungsvorrichtung mit dem Kontaktpin angebunden werden. Ein derartiger elektrischer Leiter kann beispielsweise ein Litzendraht oder ein Lackdraht sein. Die Anbindung des elektrischen Leiters kann insbesondere schwierig werden, wenn der elektrische Leiter einen größeren Querschnitt als die äußeren Kontaktelemente/Kontaktpins des Spulenkörpers haben.An electrical conductor that is wound on the bobbin must be connected to the contacting device with the contact pin. Such an electrical conductor can be, for example, a stranded wire or an enamelled wire. The connection of the electrical conductor can be particularly difficult if the electrical conductor has a larger cross section than the outer contact elements / contact pins of the coil former.

Es ist wünschenswert, eine Kontaktierungsvorrichtung zum Anbinden eines elektrischen Leiters anzugeben, mit der es ermöglicht wird, den elektrischen Leiter auf leicht zu handhabende Weise und zuverlässig an die Kontaktierungsvorrichtung anzubinden. Des Weiteren besteht ein Bedarf, einen Spulenkörper zum Bewickeln mit einem elektrischen Leiter anzugeben, bei dem ein elektrischer Leiter auf zuverlässige und leicht zu handhabende Weise an eine Kontaktierungsvorrichtung des Spulenkörpers angebunden werden kann. Des Weiteren soll ein induktives elektrisches Bauelement, insbesondere eine Spule oder ein Transformator, angegeben werden, bei dem ein elektrischer Leiter auf zuverlässige und einfach zu handhabende Weise an eine Kontaktierungsvorrichtung angebunden werden kann. Darüber hinaus soll ein Verfahren zum Anbinden eines elektrischen Leiters an eine Kontaktierungsvorrichtung eines Spulenkörpers angegeben werden.It is desirable to specify a contacting device for connecting an electrical conductor, with which it is possible to connect the electrical conductor to the contacting device in an easy-to-use manner and reliably. Furthermore, there is a need to specify a bobbin for winding with an electrical conductor, in which an electrical conductor can be connected to a contacting device of the bobbin in a reliable and easy-to-use manner. Furthermore, an inductive electrical component, in particular a coil or a transformer, is to be specified, in which an electrical conductor can be connected to a contacting device in a reliable and easy-to-use manner. In addition, a method for connecting an electrical conductor to a contacting device of a coil body is to be specified.

Eine erfindungsgemäße Kontaktierungsvorrichtung zum Anbinden eines elektrischen Leiters ist im Patentanspruch 1 angegeben.A contacting device according to the invention for connecting an electrical conductor is specified in claim 1.

Gemäß der Erfindung umfasst eine Kontaktierungsvorrichtung zum Anbinden eines elektrischen Leiters einen Anschlusskontakt zum Fixieren des elektrischen Leiters an die Kontaktierungsvorrichtung, wobei der Anschlusskontakt eine Halterung aufweist. Die Halterung weist einen Aufnahmebereich zur Aufnahme des elektrischen Leiters auf. Die Halterung ist derart ausgebildet, dass der elektrische Leiter durch ein Einklemmen in die Halterung und ohne ein Verbiegen der Halterung an den Anschlusskontakt anschließbar ist. Der Aufnahmebereich weist eine Eintrittsöffnung und eine Bodenfläche auf und erstreckt sich zwischen der Eintrittsöffnung und der Bodenfläche. Der Aufnahmebereich verjüngt sich zwischen der Eintrittsöffnung und der Bodenfläche derart, dass sich bei einem Einlegen des elektrischen Leiters in den Aufnahmebereich ein Querschnitt des elektrischen Leiters verformt, wodurch der elektrische Leiter im Klemmsitz an dem Anschlusskontakt gehalten wird.According to the invention, a contacting device for connecting an electrical conductor comprises a connection contact for fixing the electrical conductor to the contacting device, the connection contact having a holder. The holder has a receiving area for receiving the electrical conductor. The holder is designed in such a way that the electrical conductor can be connected to the connection contact by being clamped in the holder and without bending the holder. The receiving area has an entry opening and a bottom surface and extends between the entry opening and the bottom surface. The receiving area tapers between the inlet opening and the bottom surface in such a way that when the electrical conductor is inserted into the receiving area, a cross section of the electrical conductor is deformed, whereby the electrical conductor is held in a press fit on the connection contact.

Der elektrische Leiter kann durch ein manuelles oder automatisiertes Hineindrücken in den Aufnahmebereich aufgrund der Verformung und der dabei auftretenden Spannung im Klemmsitz an den Anschlusskontakt angebunden werden.The electrical conductor can be connected to the connection contact in a press fit by manually or automatically pressing it into the receiving area due to the deformation and the voltage that occurs in the process.

Der Aufnahmebereich kann im Querschnitt trapez-förmig ausgebildet sein. Der Aufnahmebereich weist mindestens eine erste Seitenwand und mindestens eine zweite Seitenwand auf, wobei sich die mindestens eine erste und die mindestens eine zweite Seitenwand von gegenüberliegenden Seiten der Bodenfläche bis zu der Eintrittsöffnung erstrecken. Die erste und zweite Seitenwand sind zwischen der Eintrittsöffnung und der Bodenfläche derart angeordnet, dass sich der Aufnahmebereich ausgehend von der Eintrittsöffnung bis zur Bodenfläche hin kontinuierlich verjüngt. Dadurch ist die Halterung derart ausgebildet ist, dass der elektrische Leiter ohne ein Verbiegen der mindestens einen ersten und der mindestens einen zweiten Seitenwand an der Halterung fixierbar ist.The receiving area can have a trapezoidal cross-section. The receiving area has at least one first side wall and at least one second side wall, the at least one first and the at least one second side wall extending from opposite sides of the bottom surface to the inlet opening. The first and second side walls are arranged between the inlet opening and the bottom surface in such a way that the receiving area tapers continuously from the inlet opening to the bottom surface. As a result, the holder is designed in such a way that the electrical conductor can be fixed on the holder without bending the at least one first and the at least one second side wall.

Gemäß einer Ausführungsform kann wobei zwischen der mindestens einen ersten Seitenwand und der Bodenfläche und zwischen der mindestens einen zweiten Seitenwand und der Bodenfläche jeweils eine Ecke gebildet sein. Die mindestens eine erste Seitenwand und die mindestens eine zweite Seitenwand können in Bezug auf eine Senkrechte auf die Bodenfläche jeweils in einem Neigungswinkel zwischen 5° bis 15° angeordnet sein. Vorzugsweise beträgt der Neigungswinkel 5° bis 7°.According to one embodiment, a corner can be formed between the at least one first side wall and the bottom surface and between the at least one second side wall and the bottom surface. The at least one first side wall and the at least one second side wall can each be arranged at an angle of inclination between 5 ° and 15 ° with respect to a perpendicular to the floor surface. The angle of inclination is preferably 5 ° to 7 °.

Gemäß einer weiteren Ausgestaltungsform der Kontaktierungsvorrichtung kann der Abstand zwischen der mindestens einen ersten Seitenwand und der mindestens einen zweiten Seitenwand unmittelbar unterhalb der Eintrittsöffnung größer sein als die Breite der Bodenfläche zwischen der mindestens einen ersten Seitenwand und der mindestens einen zweiten Seitenwand. Insbesondere kann das Verhältnis zwischen dem Abstand zwischen der mindestens einen ersten Seitenwand und der mindestens einen zweiten Seitenwand unmittelbar unterhalb der Eintrittsöffnung und der Breite der Bodenfläche zwischen der mindestens einen ersten und der mindestens einen zweiten Seitenwand 1,2 bis 3 betragen.According to a further embodiment of the contacting device, the distance between the at least one first side wall and the at least one second side wall directly below the inlet opening can be greater than the width of the bottom surface between the at least one first side wall and the at least one second side wall. In particular, the ratio between the distance between the at least one first side wall and the at least one second side wall immediately below the inlet opening and the width of the bottom surface between the at least one first and the at least one second side wall can be 1.2 to 3.

Gemäß einer weiteren Ausführungsform der Kontaktierungsvorrichtung weist die Halterung mindestens einen Vorsprung, der die Eintrittsöffnung in den Aufnahmebereich verengt, auf. Wenn der elektrische Leiter durch die Eintrittsöffnung zunächst noch lose in den Aufnahmebereich der Halterung eingelegt wird, verhindert der Vorsprung ein Herausrutschen des Leiters aus dem Aufnahmebereich. Der Vorsprung kann in Form von Haken ausgestaltet sein. Der Vorsprung kann beispielsweise durch zwei Haken gebildet werden, wobei der Abstand der beiden Haken beziehungsweise Vorsprünge vorzugsweise dem Querschnitt des elektrischen Leiters angepasst ist. Die Vorsprünge können somit beispielsweise eine Klemmung beziehungsweise Fixierung in einer x-Richtung, in Richtung der Normalen auf die Bodenfläche, bewirken.According to a further embodiment of the contacting device, the holder has at least one projection which narrows the entry opening into the receiving area. If the electrical conductor is initially still loosely inserted into the receiving area of the holder through the entry opening, the projection prevents the conductor from slipping out of the receiving area. The projection can be designed in the form of hooks. The projection can be formed, for example, by two hooks, the distance between the two hooks or projections preferably being adapted to the cross section of the electrical conductor. The projections can thus, for example, cause a clamping or fixation in an x-direction, in the direction of the normal to the floor surface.

Der Aufnahmebereich kann als eine Materialaussparung in Form einer Nut in dem Material des Anschlusskontaktes ausgebildet sein. Die Materialaussparung kann derart geformt sein, dass der Querschnitt des elektrischen Leiters beim Hineindrücken des Leiters in den Aufnahmebereich mit einer Kraft beziehungsweise beim Andrücken des elektrischen Leiters mit einer Kraft gegen die Bodenfläche und die Seitenwände des Aufnahmebereichs in der Materialaussparung verformt wird und dadurch im Klemmsitz in dem Aufnahmebereich gehalten wird. Die innere Fläche der Aussparung muss dazu einem Querschnitt des elektrischen Leiters angepasst sein. Die Aussparung kann beispielsweise derart ausgebildet sein, dass ein zuvor annährend runder Querschnitt des elektrischen Leiters beim Hineindrücken des Leiters in den Aufnahmebereich verformt wird und somit der elektrische Leiter auch in einer z-Richtung senkrecht zu der x-Richtung fixiert werden kann.The receiving area can be designed as a material recess in the form of a groove in the material of the connection contact. The material recess can be shaped in such a way that the cross section of the electrical conductor when pressed in of the conductor in the receiving area is deformed with a force or when the electrical conductor is pressed against the bottom surface and the side walls of the receiving area in the material recess and is thereby held in a press fit in the receiving area. For this purpose, the inner surface of the recess must be adapted to a cross section of the electrical conductor. The recess can be designed, for example, in such a way that a previously approximately round cross section of the electrical conductor is deformed when the conductor is pressed into the receiving area and thus the electrical conductor can also be fixed in a z-direction perpendicular to the x-direction.

Die Kontaktierungsvorrichtung umfasst des Weiteren einen Kontaktstift zum Anlegen eines elektrischen Signals. Der Anschlusskontakt und der Kontaktstift sind miteinander verbunden und aus dem gleichen Materialstück geformt.The contacting device further comprises a contact pin for applying an electrical signal. The connection contact and the contact pin are connected to one another and formed from the same piece of material.

Im Patentanspruch 9 ist ein Spulenkörper zum Bewickeln mit einem elektrischen Leiter definiert. Der Spulenkörper umfasst eine erfindungsgemäße Kontaktierungsvorrichtung zum Anbinden des elektrischen Leiters. Die Kontaktierungsvorrichtung kann beispielsweise in das Material des Spulenkörpers eingebettet sein. Die Kontaktierungsvorrichtung kann vom Material des Spulenkörpers umspritzt sein oder in das Material des Spulenkörpers eingegossen sein.In claim 9, a bobbin for winding with an electrical conductor is defined. The coil body comprises a contacting device according to the invention for connecting the electrical conductor. The contacting device can, for example, be embedded in the material of the coil body. The contacting device can be encapsulated by the material of the bobbin or cast into the material of the bobbin.

Im Patentanspruch 10 ist ein induktives elektrisches Bauelement, insbesondere eine Spule oder ein Transformator, angegeben. Das Bauelement umfasst den Spulenkörper der zuvor genannten Art, wobei der Spulenkörper mit dem elektrischen Leiter bewickelt ist. Der elektrische Leiter ist in dem Aufnahmebereich des Anschlusskontakts im Klemmsitz gehalten. Der elektrische Leiter kann dabei als ein Litzen- oder Lackdraht mit einem Querschnitt zwischen 0,05 mm2 und 95 mm2, beispielsweise mit einem Querschnitt von 1,6 mm2, ausgebildet sein.In claim 10, an inductive electrical component, in particular a coil or a transformer, is specified. The component comprises the coil body of the aforementioned type, the coil body being wound with the electrical conductor. The electrical conductor is held in a press fit in the receiving area of the connection contact. The Electrical conductors can be designed as a stranded or enamelled wire with a cross section between 0.05 mm 2 and 95 mm 2 , for example with a cross section of 1.6 mm 2 .

Ein erfindungsgemäßes Verfahren zum Anbinden eines elektrischen Leiters an eine Kontaktierungsvorrichtung eines Spulenkörpers ist im Patentanspruch 12 angegeben. Das Verfahren umfasst dementsprechend die folgenden Schritte:

  • Bereitstellen des zuvor angegebenen Spulenkörpers,
  • Fixieren des elektrischen Leiters an dem Anschlusskontakt der Kontaktierungsvorrichtung, indem der elektrische Leiter in den Aufnahmebereich des Anschlusskontakts derart eingelegt wird, dass bei dem Einlegen des elektrischen Leiters in den Aufnahmebereich der Querschnitt des elektrischen Leiters verformt wird, wodurch der elektrische Leiter im Klemmsitz an dem Anschlusskontakt gehalten wird.
A method according to the invention for connecting an electrical conductor to a contacting device of a coil former is specified in claim 12. The procedure accordingly comprises the following steps:
  • Provision of the previously specified coil former,
  • Fixing the electrical conductor on the connection contact of the contacting device by inserting the electrical conductor into the receiving area of the connection contact in such a way that when the electrical conductor is inserted into the receiving area, the cross section of the electrical conductor is deformed, whereby the electrical conductor is clamped on the connection contact is held.

Dabei wird der elektrische Leiter nach dem Einlegen durch die Eintrittsöffnung in den Aufnahmebereich zunächst durch den Vorsprung in einer ersten Richtung parallel zur Senkrechten auf die Bodenfläche des Aufnahmebereichs fixiert, so dass der elektrische Leiter nicht mehr aus dem Aufnahmebereich heraus gleiten kann. Nachfolgend wird der elektrische Leiter durch Andrücken gegen die Bodenfläche in einer zweiten Richtung senkrecht zu der ersten Richtung an dem Anschlusskontakt fixiert. Das Fixieren des elektrischen Leiters an dem Anschlusskontakt kann derart erfolgen, dass ein Ende des elektrischen Leiters aus der Halterung herausragt. Zum elektrischen Kontaktieren des Leiters an den Anschlusskontakt wird ein Lötmaterial auf das Ende des elektrischen Leiters aufgebracht. Dadurch schmilzt eine isolierende Ummantelung um die leitenden Drähte des elektrischen Leiters, wodurch das Ende des elektrischen Leiters mit dem Anschlusskontakt elektrisch kontaktiert wird.After being inserted through the entry opening into the receiving area, the electrical conductor is initially fixed by the projection in a first direction parallel to the vertical on the bottom surface of the receiving area, so that the electrical conductor can no longer slide out of the receiving area. The electrical conductor is then fixed to the connection contact by pressing it against the bottom surface in a second direction perpendicular to the first direction. The electrical conductor can be fixed to the connection contact in such a way that one end of the electrical conductor protrudes from the holder. To make electrical contact between the conductor and the connection contact, a soldering material is applied to the end of the electrical conductor. As a result, an insulating sheath melts the conductive wires of the electrical conductor, whereby the end of the electrical conductor is electrically contacted with the connection contact.

Die Erfindung wird im Folgenden anhand von Figuren, die Ausführungsbeispiele der vorliegenden Erfindung zeigen, näher erläutert. Es zeigen:

Figur 1A
eine Ausführungsform einer erfindungsgemäßen Kontaktierungsvorrichtung zum Anbinden eines elektrischen Leiters,
Figur 1B
eine perspektivische Ansicht einer Ausführungsform einer erfindungsgemäßen Kontaktierungsvorrichtung zum Anbinden eines elektrischen Leiters,
Figur 1C
eine Ausführungsform einer erfindungsgemäßen Kontaktierungsvorrichtung zum Anbinden eines elektrischen Leiters mit einem im Klemmsitz gehaltenen elektrischen Leiter,
Figur 1D
eine Ausführungsform einer erfindungsgemäßen Kontaktierungsvorrichtung mit einer Fläche einer Aussparung,
Figur 2A
eine nicht erfindungsgemäße Ausführungsform einer Kontaktierungsvorrichtung zum Anbinden eines elektrischen Leiters,
Figur 2B
eine nicht erfindungsgemäße Ausführungsform einer Kontaktierungsvorrichtung zum Anbinden eines elektrischen Leiters,
Figur 2C
eine nicht erfindungsgemäße Ausführungsform einer Kontaktierungsvorrichtung zum Anbinden eines elektrischen Leiters,
Figur 2D
eine weitere Ausführungsform einer Kontaktierungsvorrichtung zum Anbinden eines elektrischen Leiters,
Figur 2E
eine weitere Ausführungsform einer Kontaktierungsvorrichtung zum Anbinden eines elektrischen Leiters,
Figur 3
eine Ausführungsform eines Spulenkörpers/eines induktiven elektrischen Bauelements mit einer Kontaktierungsvorrichtung zum Anbinden eines elektrischen Leiters.
The invention is explained in more detail below with reference to figures which show exemplary embodiments of the present invention. Show it:
Figure 1A
an embodiment of a contacting device according to the invention for connecting an electrical conductor,
Figure 1B
a perspective view of an embodiment of a contacting device according to the invention for connecting an electrical conductor,
Figure 1C
an embodiment of a contacting device according to the invention for connecting an electrical conductor to an electrical conductor held in a press fit,
Figure 1D
an embodiment of a contacting device according to the invention with a surface of a recess,
Figure 2A
an embodiment not according to the invention of a contacting device for connecting an electrical conductor,
Figure 2B
an embodiment not according to the invention of a contacting device for connecting an electrical conductor,
Figure 2C
an embodiment not according to the invention of a contacting device for connecting an electrical conductor,
Figure 2D
another embodiment of a contacting device for connecting an electrical conductor,
Figure 2E
another embodiment of a contacting device for connecting an electrical conductor,
Figure 3
an embodiment of a coil former / an inductive electrical component with a contacting device for connecting an electrical conductor.

In den Figuren 1A, 1B, 1C und 1D ist eine erfindungsgemäße Ausführungsform einer Kontaktierungsvorrichtung 100 zum Anbinden eines elektrischen Leiters dargestellt. Die Figuren zeigen unterschiedliche Ansichten der Kontaktierungsvorrichtung. Die Kontaktierungsvorrichtung 100 umfasst einen Anschlusskontakt 101 zum Fixieren des elektrischen Leiters. Der Anschlusskontakt 101 weist dazu eine Halterung 110 auf. Die Halterung 110 ist derart ausgebildet, dass der elektrische Leiter durch ein Einklemmen in die Halterung 110 an dem Anschlusskontakt 101 anschließbar ist, ohne dass dazu ein Verformen der Halterung notwendig ist.In the Figures 1A, 1B , 1C and 1D an embodiment according to the invention of a contacting device 100 for connecting an electrical conductor is shown. The figures show different views of the contacting device. The contacting device 100 comprises a connection contact 101 for fixing the electrical conductor. The connection contact 101 has a holder 110 for this purpose. The holder 110 is designed in such a way that the electrical conductor can be connected to the connection contact 101 by being clamped in the holder 110, without the holder having to be deformed for this purpose.

Die Halterung 110 kann einen Aufnahmebereich 112 zur Aufnahme des elektrischen Leiters aufweisen. Der Aufnahmebereich 112 weist eine Eintrittsöffnung E112 und eine Bodenfläche B112 auf. Der Aufnahmebereich 112 erstreckt sich zwischen der Eintrittsöffnung E112 und der Bodenfläche B112. Der Aufnahmebereich 112 verjüngt sich zwischen der Eintrittsöffnung E112 und der Bodenfläche B112 derart, dass sich bei einem Einlegen des elektrischen Leiters 11 in den Aufnahmebereich 112 ein Querschnitt A11 des elektrischen Leiters 11 verformt, wodurch der elektrische Leiter im Klemmsitz an dem Anschlusskontakt 101 gehalten wird.The holder 110 can have a receiving area 112 for receiving the electrical conductor. The receiving area 112 has an inlet opening E112 and a bottom surface B112. The receiving area 112 extends between the inlet opening E112 and the bottom surface B112. The receiving area 112 tapers between the inlet opening E112 and the bottom surface B112 in such a way that when it is inserted of the electrical conductor 11 is deformed into the receiving region 112, a cross section A11 of the electrical conductor 11, as a result of which the electrical conductor is held in a press fit on the connection contact 101.

Figur 1C zeigt den elektrischen Leiter 11, der beim Einklemmen in die Halterung 110 verformt wird. Durch die Verformung seines Querschnitts A11 kann der elektrische Leiter 11 an dem Anschlusskontakt fixiert werden. Figure 1C shows the electrical conductor 11, which is deformed when it is clamped in the holder 110. By deforming its cross section A11, the electrical conductor 11 can be fixed to the connection contact.

Die Halterung 110 kann mindestens einen Vorsprung 111 aufweisen, der die Eintrittsöffnung E112 in den Aufnahmebereich 112 verengt. Dieser Materialvorsprung kann über dem Aufnahmebereich 112 angeordnet sein. Anstelle eines einzigen Vorsprungs können wie bei der in Figur 1A, 1B, 1C und 1D vorgesehenen Ausführungsform auch zwei Materialvorsprünge 1111 und 1112 vorgesehen sein, die die Eintrittsöffnung E112 in den Aufnahmebereich 112 begrenzen beziehungsweise einengen.The holder 110 can have at least one projection 111 which narrows the inlet opening E112 into the receiving area 112. This material projection can be arranged above the receiving area 112. Instead of a single protrusion, as in the Figure 1A, 1B , 1C and 1D provided embodiment, two material projections 1111 and 1112 can also be provided, which delimit or constrict the inlet opening E112 into the receiving area 112.

Die Halterung 110 kann als eine Materialaussparung oder Nut im Material des Anschlusskontakts 101 ausgebildet sein. Die Fläche A112 des Aufnahmebereichs 112 ist an den Querschnitt des einzuklemmenden elektrischen Leiters angepasst. Die Aussparung kann beispielsweise derart ausgeformt sein, dass die Fläche A112 mindestens dem Querschnitt des elektrischen Leiters entspricht. Bezüglich ihrer Form kann die Aussparung beziehungsweise Nut der Halterung 110 im Querschnitt v-förmig oder, wie in den Figuren 1A, 1B, 1C und 1D gezeigt ist, trapezförmig ausgestaltet sein.The holder 110 can be designed as a material recess or groove in the material of the connection contact 101. The area A112 of the receiving area 112 is adapted to the cross section of the electrical conductor to be clamped. The recess can be shaped, for example, in such a way that the area A112 corresponds at least to the cross section of the electrical conductor. With regard to its shape, the recess or groove of the holder 110 can be V-shaped in cross section or, as in FIG Figures 1A, 1B , 1C and 1D is shown to be trapezoidal.

Der Aufnahmebereich 112 kann mindestens eine erste und zweite Seitenwand aufweisen. Im Ausführungsbeispiel der Figuren 1A, 1B, 1C und 1D weist der Aufnahmebereich 112 die Seitenwände S112a und S112b auf. Die Bodenfläche kann als eine ebene Fläche ausgeführt sein. Zwischen den Seitenwänden S112a, S112b und der ebenen Bodenfläche wird jeweils eine Ecke gebildet. Die Seitenwände S112a, S112b erstrecken sich von gegenüberliegenden Seiten der Bodenfläche B112 bis zu der Eintrittsöffnung E112. Die Seitenwände können in einem Neigungswinkel zur Bodenfläche angeordnet sein, so dass sich der Aufnahmebereich 112 ausgehend von der Eintrittsöffnung E112 kontinuierlich bis zu der Bodenfläche B112 verjüngt.The receiving area 112 can have at least a first and a second side wall. In the embodiment of Figures 1A, 1B , 1C and 1D the receiving area 112 has the side walls S112a and S112b. The bottom surface can be designed as a flat surface. A corner is formed between the side walls S112a, S112b and the flat bottom surface. The side walls S112a, S112b extend from opposite sides of the bottom surface B112 as far as the inlet opening E112. The side walls can be arranged at an angle of inclination to the floor surface, so that the receiving area 112 tapers continuously starting from the inlet opening E112 as far as the floor surface B112.

Die Halterung 110 ist durch den Vorsprung 111 dazu ausgebildet, beim Einlegen des elektrischen Leiters in den Aufnahmebereich den elektrischen Leiter in einer x-Richtung, senkrecht zur Normalen auf die Bodenfläche B112 zu fixieren. Der Vorsprung kann dazu die in den Figuren 1A bis 1D gezeigten Haken 1111, 1112 aufweisen. Beim Einlegen in den Aufnahmebereich ist somit sichergestellt, dass der elektrische Leiter nicht wieder aus dem Aufnahmebereich 112 herausrutscht.The holder 110 is designed by the projection 111 to fix the electrical conductor in an x-direction, perpendicular to the normal, on the floor surface B112 when the electrical conductor is inserted into the receiving area. The projection can do this in the Figures 1A to 1D have hooks 1111, 1112 shown. When it is inserted into the receiving area, it is thus ensured that the electrical conductor does not slip out of the receiving area 112 again.

Aufgrund der Verjüngung des Aufnahmebereichs 112 ist die Halterung 110 ferner dazu ausgebildet, den elektrischen Leiter bei einem weiteren Eindrücken in den Aufnahmebereich 112 in einer z-Richtung zu fixieren, wobei die x- und z-Richtung orthogonal zueinander ausgerichtet sind. Beim Anbinden des elektrischen Leiters an die Kontaktierungsvorrichtung wird der Querschnitt A11 des elektrischen Leiters zunächst von dem Vorsprung 111 und nachfolgend von der Form des Aufnahmebereichs 112 verformt.Due to the tapering of the receiving area 112, the holder 110 is also designed to fix the electrical conductor in a z-direction when it is pressed further into the receiving area 112, the x and z directions being oriented orthogonally to one another. When the electrical conductor is connected to the contacting device, the cross section A11 of the electrical conductor is first deformed by the projection 111 and then by the shape of the receiving area 112.

Damit der Vorsprung 111 den elektrischen Leiter 11 in x-Richtung fixieren kann, kann der Abstand zwischen den Vorsprüngen 1111 und 1112 zwischen 70 % bis 85 % des Durchmessers des elektrischen Leiters betragen. Der Abstand sollte derart gewählt werden, dass beim Eindrücken des elektrischen Leiters in den Aufnahmebereich 112 ein Draht des elektrischen Leiters nicht verletzt wird.So that the projection 111 can fix the electrical conductor 11 in the x direction, the distance between the projections 1111 and 1112 can be between 70% and 85% of the diameter of the electrical conductor. The distance should can be selected such that when the electrical conductor is pressed into the receiving area 112, a wire of the electrical conductor is not injured.

Der Aufnahmebereich 112 kann unmittelbar unterhalb der Eintrittsöffnung breiter sein als unmittelbar über der Bodenfläche. Der Aufnahmebereich 112 kann derart ausgebildet sein, dass ein Verhältnis eines Außenmaß da, das einen Abstand zwischen den Seitenwänden S112a, S112b unmittelbar unterhalb der Eintrittsöffnung E112 angibt, zu einem Innenmaß di, dass eine Breite der Bodenfläche zwischen den Seitenwänden S112a, S112b angibt, beispielsweise 1,2 bis 3 beträgt.The receiving area 112 can be wider directly below the inlet opening than directly above the floor surface. The receiving area 112 can be designed in such a way that a ratio of an outer dimension da, which indicates a distance between the side walls S112a, S112b directly below the inlet opening E112, to an inner dimension di, which indicates a width of the bottom surface between the side walls S112a, S112b, for example 1.2 to 3.

Die Seitenwände S112a, S112b können in Bezug auf eine Senkrechte auf die Bodenfläche auf der Bodenfläche in einem Neigungswinkel zwischen 5° und 15° angeordnet sein. Als besonders vorteilhaft für die Klemmung des elektrischen Leiters 11 in dem Aufnahmebereich 112 hat es sich erwiesen, wenn der Winkel zwischen der Senkrechten auf die Bodenfläche B112 und den Seitenwänden 5° bis 7° beträgt.The side walls S112a, S112b can be arranged on the floor surface at an angle of inclination between 5 ° and 15 ° with respect to a perpendicular to the floor surface. It has proven to be particularly advantageous for clamping the electrical conductor 11 in the receiving area 112 if the angle between the perpendicular to the bottom surface B112 and the side walls is 5 ° to 7 °.

Die Kontaktierungsvorrichtung 100 umfasst des Weiteren ein Kontaktierungselement 102 zum Anlegen eines elektrischen Signals an die Kontaktierungsvorrichtung. Das Kontaktierungselement 102 kann beispielsweise als ein Kontaktpin/Kontaktstift ausgebildet sein. Der Anschlusskontakt 101 ist elektrisch mit dem Kontaktpin 102 verbunden.The contacting device 100 further comprises a contacting element 102 for applying an electrical signal to the contacting device. The contacting element 102 can be designed, for example, as a contact pin / contact pin. The connection contact 101 is electrically connected to the contact pin 102.

Die Figuren 2A, 2B und 2C zeigen weitere Ausführungsformen, die nicht unter den Gegenstand der Ansprüche fallen, des Anschlusskontakts 101 der Kontaktierungsvorrichtung 100. Bei der in Figur 2A gezeigten Ausführungsform weist die Halterung 110 lediglich einen trapezförmig ausgestalteten Aufnahmebereich 112 auf, in den der elektrische Leiter 11 durch Verformung seines Querschnitts eingeklemmt wird, so dass er an dem Anschlusskontakt 101 fixiert ist.The Figures 2A, 2B and 2C show further embodiments, which do not fall under the subject matter of the claims, of the connection contact 101 of the contacting device 100 Figure 2A In the embodiment shown, the holder 110 only has a trapezoidal receiving area 112 into which the electrical conductor 11 is clamped by deformation of its cross section, so that it is fixed to the connection contact 101.

Die Figuren 2B, 2C, 2D und 2E zeigen weitere Ausführungsformen des Anschlusskontakts 101 der Kontaktierungsvorrichtung 100, bei denen der Anschlusskontakt 101 jeweils einen Vorsprung 111 und einen Aufnahmebereich 112 aufweist. Es wird angemerkt, dass die in den Figuren 2B und 2C gezeigten Ausführungsformen nicht erfindungsgemäße Ausgestaltungen eines Anschlusskontaktes zeigen. Bei der in Figur 2B gezeigten Ausführungsform umfasst die Halterung 110 zwei Vorsprünge 1111 und 1112, die die Eintrittsöffnung E112 in den Aufnahmebereich 112 der Halterung 110 einengen. Die Vorsprünge 1111, 1112 sind nach Innen in Richtung des Aufnahmebereichs 112 gewandt. Der Aufnahmebereich weist unter den Vorsprüngen 1111, 1112 jeweils eine Ausbuchtung auf. Dadurch ist der Aufnahmebereich 112 im oberen Bereich breiter ausgebildet und wird im unteren Bereich zur Bodenfläche B112 schmäler, um den Querschnitt eines eingelegten elektrischen Leiters zu verformen.The Figures 2B , 2C , 2D and 2E show further embodiments of the connection contact 101 of the contacting device 100, in which the connection contact 101 each has a projection 111 and a receiving area 112. It is noted that the Figures 2B and 2C The embodiments shown do not show embodiments of a connection contact according to the invention. At the in Figure 2B In the embodiment shown, the holder 110 comprises two projections 1111 and 1112, which narrow the inlet opening E112 into the receiving area 112 of the holder 110. The projections 1111, 1112 face inwardly in the direction of the receiving area 112. The receiving area has a bulge under each of the projections 1111, 1112. As a result, the receiving area 112 is made wider in the upper area and is narrower in the lower area towards the bottom surface B112 in order to deform the cross section of an inserted electrical conductor.

Bei der in Figur 2C gezeigten Ausführungsform weist der Anschlusskontakt 110 an einem Bodenteil 113 angeordnete Schenkel 114, 115 auf. Die beiden Schenkel sind unter Spannung nach oben hin zueinander gebogen, so dass die Eintrittsöffnung E112 in den Aufnahmebereich 112 eingeengt wird. Zum Einlegen des elektrischen Leiters 11 werden die beiden Schenkel 114, 115 auseinander gebogen und der elektrische Leiter durch die Eintrittsöffnung in den Aufnahmebereich eingelegt. Aufgrund der Spannung klemmen die beiden Schenkel danach den elektrischen Leiter innerhalb des Aufnahmebereichs zwischen den Schenkeln und der Bodenfläche B112 ein, so dass der elektrische Leiter fixiert ist.At the in Figure 2C In the embodiment shown, the connection contact 110 has legs 114, 115 arranged on a bottom part 113. The two legs are bent upwards towards one another under tension, so that the inlet opening E112 is narrowed into the receiving area 112. To insert the electrical conductor 11, the two legs 114, 115 are bent apart and the electrical conductor is inserted through the entry opening into the receiving area. Because of the voltage, the two legs then clamp the electrical conductor within the receiving area between the legs and the bottom surface B112, so that the electrical conductor is fixed.

Die Figuren 2D und 2E zeigen jeweils Ausführungsformen des Anschlusskontakts 101 der Kontaktierungsvorrichtung 100, bei denen der Anschlusskontakt 101 eine Halterung 110 mit einem Aufnahmebereich 112 aufweist. Die Halterung 110 weist jedoch lediglich einen Vorsprung 111 auf, der die Eintrittsöffnung E112 in den Aufnahmebereich 112 einengt. Bei der in Figur 2D gezeigten Ausführungsform erstreckt sich ein Vorsprung 1111 von der linken Seite über den Aufnahmebereich 112, während sich bei der in Figur 2E gezeigten Ausführungsform ein Vorsprung 1112 von der rechten Seite über den Aufnahmebereich 112 erstreckt.The Figures 2D and 2E each show embodiments of the connection contact 101 of the contacting device 100, at which the connection contact 101 has a holder 110 with a receiving area 112. However, the holder 110 only has one projection 111 which narrows the inlet opening E112 into the receiving area 112. At the in Figure 2D In the embodiment shown, a projection 1111 extends from the left side over the receiving region 112, while in the case of the embodiment shown in FIG Figure 2E In the embodiment shown, a projection 1112 extends from the right-hand side over the receiving region 112.

Figur 3 zeigt einen Spulenkörper 10 beziehungsweise ein induktives elektrisches Bauelement 1 mit einer Kontaktierungsvorrichtung 100 nach einer der oben genannten Ausführungsformen. Im Ausführungsbeispiel der Figur 3 weist die Kontaktierungsvorrichtung die in den Figuren 1A, 1B, 1C und 1D angegebene Ausführungsform auf. Der Spulenkörper 10 kann beispielsweise aus einem Material aus Kunststoff ausgebildet sein und die Kontaktierungsvorrichtung 100 kann aus einem Metall ausgebildet sein. Die Kontaktierungsvorrichtung 100 kann in das Material des Spulenkörpers 10 eingegossen beziehungsweise vom Material des Spulenkörpers 10 umspritzt sein. Figure 3 shows a coil body 10 or an inductive electrical component 1 with a contacting device 100 according to one of the above-mentioned embodiments. In the embodiment of Figure 3 has the contacting device in the Figures 1A, 1B , 1C and 1D specified embodiment. The coil body 10 can be formed from a material made of plastic, for example, and the contacting device 100 can be formed from a metal. The contacting device 100 can be cast into the material of the coil body 10 or the material of the coil body 10 is overmolded.

Beim Aufbringen des elektrischen Leiters 11 um den Spulenkörper 10 kann der elektrische Leiter zunächst mit einem Ende an dem Anschlusskontakt 101 der Kontaktierungsvorrichtung 100 fixiert werden, während der Rest des Leiters um den Spulenkörper gewickelt wird. Aufgrund der Fixierung des Endes des elektrischen Leiters in der x- und z-Richtung kann der elektrische Leiter mit einer Zugkraft um den Spulenkörper gewickelt werden. Die Vorsprünge der Halterung verhindern ein Herausgleiten des elektrischen Leiters aus dem Aufnahmebereich, während die zur Bodenfläche verjüngte Form des Aufnahmebereichs ein Herausrutschen des Leiters in z-Richtung verhindert.When applying the electrical conductor 11 around the coil body 10, one end of the electrical conductor can first be fixed to the connection contact 101 of the contacting device 100, while the rest of the conductor is wound around the coil body. Because the end of the electrical conductor is fixed in the x and z directions, the electrical conductor can be wound around the bobbin with a tensile force. The projections of the holder prevent the electrical conductor from sliding out of the receiving area, while the shape of the receiving area is tapered towards the bottom surface prevents the conductor from slipping out in the z-direction.

Nach dem Wicklungsvorgang kann das andere freie Ende des elektrischen Leiters an eine an dem Spulenkörper 10 benachbart zu der Kontaktierungsvorrichtung 100 vorgesehenen Kontaktierungsvorrichtung angebunden werden. Dazu wird das freie Ende des elektrischen Leiters in den Aufnahmebereich des Anschlusskontakts dieser benachbarten Kontaktierungsvorrichtung geklemmt. Anschließend werden die Enden des elektrischen Leiters gekürzt und können beispielsweise an den jeweiligen Anschlusskontakt der Kontaktierungsvorrichtungen angelötet werden. Dadurch kann ein induktives elektrisches Bauelement 1, beispielsweise eine Spule oder ein Transformator, ausgebildet werden.After the winding process, the other free end of the electrical conductor can be connected to a contacting device provided on the coil body 10 adjacent to the contacting device 100. For this purpose, the free end of the electrical conductor is clamped into the receiving area of the connection contact of this adjacent contacting device. The ends of the electrical conductor are then shortened and can, for example, be soldered to the respective connection contact of the contacting devices. As a result, an inductive electrical component 1, for example a coil or a transformer, can be formed.

Der elektrische Leiter 11 kann beispielsweise ein Litzendraht oder auch ein Lackdraht sein. Mittels der Halterung der Kontaktierungsvorrichtung können der Litzendraht beziehungsweise der Lackdraht vor dem eigentlichen Lötprozess mechanisch an dem Anschlusskontakt der Kontaktierungsvorrichtung fixiert werden. Zum Anbinden des elektrischen Leiters an die Kontaktierungsvorrichtung sind somit keine kompliziert und aufwändig gestalteten Halterungen notwendig. Die Anbindung/Terminierung des elektrischen Leiters an die Kontaktierungsvorrichtung kann manuell oder maschinell automatisiert erfolgen.The electrical conductor 11 can be, for example, a stranded wire or also an enamelled wire. By means of the holder of the contacting device, the stranded wire or the enamelled wire can be mechanically fixed to the connection contact of the contacting device before the actual soldering process. In order to connect the electrical conductor to the contacting device, therefore, no complicated and costly designed holders are necessary. The connection / termination of the electrical conductor to the contacting device can be done manually or in an automated manner.

Aufgrund der Fixierung des elektrischen Leiters in zueinander orthogonalen x- und z-Richtungen kann sich der elektrische Leiter nach einmaliger Fixierung an der Kontaktierungsvorrichtung nicht mehr von selbst lösen. Die Kontaktierungsvorrichtung ermöglicht es, insbesondere Litzendrähte beziehungsweise Lackdrähte mit einem größeren Querschnitt als der Querschnitt des Kontaktierungselements/Kontaktierungspins an der Kontaktierungsvorrichtung zu fixieren. Es lassen sich beispielsweise Litzen- beziehungsweise Lackdrähte mit einem Querschnitt von 1,6 mm2 elektrisch mit einem Kontaktstift mit einem Querschnitt von 1 mm2 verbinden.Because the electrical conductor is fixed in x and z directions that are orthogonal to one another, the electrical conductor can no longer detach itself after it has been fixed to the contacting device once. The contacting device makes it possible, in particular, to use stranded wires or enameled wires with a larger cross section than the cross section of the contacting element / contacting pins to be fixed on the contacting device. For example, stranded or enamelled wires with a cross section of 1.6 mm 2 can be electrically connected to a contact pin with a cross section of 1 mm 2 .

BezugszeichenlisteList of reference symbols

11
induktives elektrisches Bauelementinductive electrical component
1010
SpulenkörperBobbin
1111
elektrischer Leiterelectrical conductor
100100
KontaktierungsvorrichtungContacting device
101101
AnschlusskontaktConnection contact
102102
KontaktstiftContact pin
110110
Halterungbracket
111111
Vorsprunghead Start
112112
AufnahmebereichRecording area
113113
BodenteilBottom part
114, 115114, 115
Schenkelleg
B112B112
BodenflächeFloor area
S112S112
SeitenwandSide wall
E112E112
EintrittsöffnungInlet opening

Claims (14)

  1. Contacting device (100) for connecting an electrical conductor (11), comprising:
    - a connection contact (101) for fixing the electrical conductor (11) to the contacting device (100),
    - wherein the connection contact (101) has a retainer (110),
    - wherein the retainer (110) is formed in such a way that the electrical conductor (11) can be connected to the contacting device (100) by being clamped in the retainer (110) and without bending of the retainer (110),
    - wherein the retainer (110) has an accommodating region (112) for accommodating the electrical conductor (11),
    - wherein the accommodating region (112) has an inlet opening (E112) and a flat base surface (B112) and the accommodating region (112) extends between the inlet opening (E112) and the base surface (B112),
    - wherein the accommodating region (112) tapers continuously from the inlet opening to the base surface in such a way that a cross section (A11) of the electrical conductor (11) is deformed when the electrical conductor (11) is inserted into the accommodating region (112), whereby the electrical conductor is retained on the connection contact (101) in a clamping seat,
    - wherein the retainer (110) has at least one protrusion (1111, 1112), which narrows the inlet opening (E112) into the accommodating region (112).
  2. Contacting device according to Claim 1,
    wherein the accommodating region (112) is trapezoidal in cross section.
  3. Contacting device according to Claim 1 or Claim 2,
    - wherein the accommodating region (112) has at least one first side wall (S112a) and at least one second side wall (S122b),
    - wherein the at least one first side wall (S112a) and the at least one second side wall (S112b) extend from opposite sides of the base surface (B112) to the inlet opening (E112),
    - wherein the retainer (110) is formed in such a way that the electrical conductor (11) can be fixed to the retainer (110) without bending of the at least one first side wall (S112a) and the at least one second side wall (S112b) .
  4. Contacting device according to any one of Claims 1 to 3,
    wherein a corner is formed between the at least one first side wall (S112a) and the base surface (B112) and between the at least one second side wall (S112b) and the base surface (B112).
  5. Contacting device according to Claim 3 or Claim 4, wherein the at least one first side wall (S112a) and the at least one second side wall (S112b) are each arranged at an angle of inclination between 5° to 15° with respect to a perpendicular to the base surface (B112).
  6. Contacting device according to Claim 3 of Claim 4, wherein the distance (da) between the at least one first side wall (S112a) and the at least one second side wall (S112b) immediately beneath the inlet opening (E112) is greater than the width (di) of the base surface (B112) between the at least one first side wall (S112a) and the at least one second side wall (S112b).
  7. Contacting device according to Claim 6,
    wherein the ratio between the distance (da) between the at least one first side wall (S112a) and the at least one second side wall (S112b) immediately beneath the inlet opening (E112) and the width (di) of the base surface (B112) between the at least one first side wall (S112a) and the at least one second side wall (S112b) is 1.2 to 3.
  8. Contacting device according to any one of Claims 1 to 7, comprising:
    - a contact pin (102) for applying an electrical signal,
    - wherein the connection contact (101) and the contact pin (102) are interconnected and are formed from the same material piece.
  9. Coil former (10) around which an electrical conductor (11) is to be wound, comprising:
    a contacting device (100) for connection of the electrical conductor (11) according to one of Claims 1 to 8.
  10. Inductive electrical component, in particular coil or transformer, comprising:
    - a coil former (10) according to Claim 9,
    - wherein the electrical conductor (11) is wound around the coil former (10),
    - wherein the electrical conductor (11) is retained in the accommodating region (112) of the connection contact (101) in a clamping seat.
  11. Inductive electrical component according to Claim 10,
    wherein the electrical conductor (11) is formed as a stranded or enamelled wire with a cross section between 0.05 mm2 and 95 mm2.
  12. Method for connecting an electrical conductor (11) to a contacting device (100) of a coil former (10), comprising:
    - providing the coil former (10) according to Claim 9,
    - fixing the electrical conductor (11) to the connection contact (101) of the contacting device (100) by inserting the electrical conductor (11) into the accommodating region (112) of the connection contact (101) in such a way that the cross section of the electrical conductor (11) is deformed when the electrical conductor is inserted into the accommodating region (112), whereby the electrical conductor is retained on the connection contact (101) in a clamping seat.
  13. Method according to Claim 12,
    wherein the electrical conductor (11), following the insertion through the inlet opening (E112) into the accommodating region (112), is fixed by the protrusion (111) in a first direction (x) parallel to the perpendicular to the base surface (B112) of the accommodating region (112) and is then fixed to the connection contact (101) in a second direction (z) perpendicular to the first direction (x) by being pressed against the base surface (B112).
  14. Method according to Claim 12 or Claim 13, comprising:
    - fixing the electrical conductor (11) to the connection contact (101) in such a way that an end of the electrical conductor (11) protrudes from the retainer (112),
    - applying a solder material to the end of the electrical conductor, whereby the end of the electrical conductor (11) is electrically contacted with the connection contact (101).
EP13717483.5A 2012-04-12 2013-04-12 Contacting device for connecting an electrical conductor Active EP2837061B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012103162A DE102012103162A1 (en) 2012-04-12 2012-04-12 Contacting device for connecting an electrical conductor
PCT/EP2013/057703 WO2013153206A1 (en) 2012-04-12 2013-04-12 Contacting device for connecting an electrical conductor

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EP2837061A1 EP2837061A1 (en) 2015-02-18
EP2837061B1 true EP2837061B1 (en) 2021-07-07

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US (1) US9570818B2 (en)
EP (1) EP2837061B1 (en)
JP (1) JP6105045B2 (en)
CN (1) CN104205501B (en)
DE (1) DE102012103162A1 (en)
WO (1) WO2013153206A1 (en)

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KR101776651B1 (en) * 2015-09-24 2017-09-08 김명덕 Transformer with Easy Connecting Coil
DE102017121924B3 (en) 2017-09-21 2019-02-21 Tdk Electronics Ag Electrical component with connection area and method for producing a connection area
DE102017121908B4 (en) 2017-09-21 2023-12-07 Tdk Electronics Ag Electrical component with stranded contact and method for producing a stranded contact
TWI699936B (en) * 2019-05-23 2020-07-21 唐虞企業股份有限公司 Cable connector
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JP2015515730A (en) 2015-05-28
US20150145633A1 (en) 2015-05-28
EP2837061A1 (en) 2015-02-18
DE102012103162A1 (en) 2013-10-17
CN104205501B (en) 2017-10-24
CN104205501A (en) 2014-12-10
WO2013153206A1 (en) 2013-10-17
US9570818B2 (en) 2017-02-14
JP6105045B2 (en) 2017-03-29

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