EP1372221A2 - Electrical contact element - Google Patents

Electrical contact element Download PDF

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Publication number
EP1372221A2
EP1372221A2 EP03011819A EP03011819A EP1372221A2 EP 1372221 A2 EP1372221 A2 EP 1372221A2 EP 03011819 A EP03011819 A EP 03011819A EP 03011819 A EP03011819 A EP 03011819A EP 1372221 A2 EP1372221 A2 EP 1372221A2
Authority
EP
European Patent Office
Prior art keywords
contact element
electrical
element according
electrical contact
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03011819A
Other languages
German (de)
French (fr)
Other versions
EP1372221B1 (en
EP1372221A3 (en
Inventor
Georg Burkhardt
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1372221A2 publication Critical patent/EP1372221A2/en
Publication of EP1372221A3 publication Critical patent/EP1372221A3/en
Application granted granted Critical
Publication of EP1372221B1 publication Critical patent/EP1372221B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2442—Contacts for co-operating by abutting resilient; resiliently-mounted with a single cantilevered beam
    • 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
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/24—Assembling by moulding on contact members
    • 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

Definitions

  • the invention relates to an electrical contact element that defined in more detail in the preamble of claim 1 Kind of.
  • Such a contact element is known from practice and can be used, for example, as a contact between a Sensor and a control unit of an electro-hydraulic Brake are used.
  • a known contact element of the type mentioned in the introduction includes a bow spring, which is attached to a bracket leg Welding connection is connected to a control unit.
  • Welding and soldering connections have the disadvantage that no non-destructive solubility between the two connected electrical units and often a large installation space is required.
  • the electrical contact element according to the invention for manufacturing a connection between at least two electrical Units with the features according to the generic term of claim 1, in which the bow spring on the one hand is firmly connected to the first electrical unit and has a bond or weld contact and on the other hand for connection to the second electrical unit is designed with a spring contact has the advantage that there is the possibility of a due to the spring contact detachable connection between two electrical units offers. At the same time, over the bond area or - contact a fixed electrical connection for example producible with a computer.
  • the spring contact is in the installed position, for example with a PCB in connection.
  • a contact element According to the invention there is a bond connection for hybrid contacting and on the other hand via the spring contact in the broadest sense a plug connection is available.
  • the bow spring stands for example, with a bond area Control unit, which forms the first electrical unit, and via the contact element in connection with a sensor, which forms the second electrical unit.
  • the two electrical Units can be joined together blindly and also simply separable.
  • no assembly or disassembly forces are countered.
  • the electrical and mechanical contacting of the bow spring and the second electrical unit takes place purely via the spring force the bow spring.
  • the electrical contact element according to the invention is everywhere can be used where there is a bond connection on the one hand an electrical unit and on the other hand a separable one Connection to another electrical unit is required. So can the electrical contact element after various applications of the invention in the automotive sector, like an electrohydraulic brake, or find also used in other electrical devices such as telephones become.
  • the electrical contact element according to the invention offers further regarding the connection with the second electrical unit the advantage of tolerance compensation in the spring direction and also advantages in terms of Positional tolerance requirements with the contact element corresponding, for example from a circuit board formed contact point of the second electrical Unit.
  • the bow spring has at least plastic injection molding in some areas.
  • the Plastic encapsulation which also serves as insulation for the example Bow spring made of a copper alloy serves, offers the possibility of the electrical contact element subsequently on a plastic one Acreage, for example that of one Control unit, by connecting the plastic encapsulation to be attached to the acreage. This is particularly so an advantage because when spraying a control unit, bow springs should be designed as inserts, which is very demanding to the injection mold and therefore in particular is not desirable for cost reasons. Also would be Bow springs designed as inserts are difficult mold release. Due to the possibility of retrofitting of the contact element on the mounting surface, these are omitted Trouble. Plastic injection molding also offers when bonding, d. H. in electrical contacting the bow spring and the first electrical assembly, one sufficient stability, since this connection technology the components would otherwise tend to vibrate.
  • the plastic encapsulation is expediently configured in a base-like manner, so that they are flush with an acreage can be.
  • the plastic extrusion is assigned to a variety of bow springs, each on the one hand, firmly with the first electrical unit are connectable and have a bond contact and on the other hand for connection to the second electrical Unit are formed with a spring contact. In order to it is possible to contact several interfaces simultaneously.
  • the plastic encapsulation advantageous means for connection to the acreage.
  • the means of connection to the acreage can be one Hole for a mounting pin of the mounting surface, one Paragraph for connection with an embossed lip of the acreage or also include at least one ultrasonic welding bar.
  • An ultrasonic welding bar has the advantage that in addition to the form fit also a material fit between the Plastic injection molding and that also made of plastic Cultivation area can be produced.
  • To connect with the acreage in this embodiment is the ultrasonic welding bar via an ultrasonic vibration with the Fitted surface, whereby the plastic softens and immerses the sealing bar in the mounting surface.
  • the contact element can be used Hard gold.
  • the bond area can be provided with fine gold. Conceivable but it is also to bond the bond area with another Bonding suitable material, such as aluminum, to provide.
  • a control unit 10 is one here not shown electro-hydraulic brake for Use in a brake system of a motor vehicle shown.
  • the control unit 10 comprises an injection molding process Manufactured housing 12, which has a fastening screw 14 connected to a sensor module 16 is which u. a. a pressure sensor 18, wherein on the other structure of the sensor module 16 in the further is not discussed in detail.
  • the pressure sensor 18 is connected to a printed circuit board 20, on which several bow springs arranged side by side 22 attack the housing 12 of the control unit 10 are attached, with the in FIG selected representation only a bow spring 22 to recognize is.
  • the bow springs 22 each comprise a bonding area 24 and for electrical coupling to the circuit board 20 the bow spring 22, which is designed as a lead frame are each a spring contact 26.
  • the bow springs 22 on the housing 12 of the control unit 10 include the bow springs 22 one in figure 1 plastic molding not shown, which the Bow springs 22 is assigned together.
  • FIGS An electrical contact element for installation in a control unit of the type shown in Figure 1.
  • the contact element 30 has a plurality of parallel extending bow springs 22, of which only two are fully shown and two are indicated.
  • the Bow springs 22 made of a copper alloy each have a spring contact 32 at one end for connection to a printed circuit board.
  • On the spring contact 32 a contact cap 34 is formed.
  • On that End contacts facing away from spring contact 32 have the clip springs 22 each have a bond or welding area or bondoder Welding contact 36 for connection to the control unit on.
  • the bow springs 22 are in the area of the bond contact 36 each taken up by a common plastic encapsulation 38, so that the bond or weld contact 36 is exposed.
  • the bow springs 22 can be moved in the transverse direction extending bracket 40 made of plastic in the Plastic extrusion 38 be secured.
  • the bond contacts 36 of the bow spring designed as a lead frame 22 are each with a bondable surface Mistake.
  • the spring contact 32 of the bow spring 22 is in each case provided with hard gold.
  • the molded plastic encapsulation 38 has Bores 42 through which the contact element 30 on fastening pins 44 a mounting surface 46 can be fastened.
  • the plastic encapsulation 38 For fastening the contact element 30 to the mounting surface 46 is the plastic encapsulation 38 through the holes 42 put on the mounting pin 44. Then be the fastening pins 44 made of plastic are pressed, so that they face the shape of a spherical head have and the contact element 38 form-fitting and secured rests on the mounting surface 46, as can be seen in FIG. 4 is.
  • a contact element 50 differs from the contact element according to Figures 2 to 4 in that the Plastic encapsulation 38 for attachment to a mounting surface 46 has no bores but a shoulder 52, the circumferential in the connection area to the mounting surface 46 is arranged on the extrusion coating 38 and with an embossed lip 54 of the acreage 46 cooperates. Otherwise corresponds the structure of the contact element 50 to that of the in Figures 2 to 4 shown contact element.
  • the plastic encapsulation 38 becomes 46 on the mounting surface 46 arranged that they are flush with their floor abuts the latter and the shoulder 52 on the embossing lip 54 attacks. Then the embossing lip 54 is removed by means of a suitable tool, so that there is at least one forms so-called embossing bead 56 on three sides, the at least partially paragraph 52 of the plastic encapsulation 38 covers, as can be seen in FIGS. 6 and 7 is.
  • a contact element 60 differs from that according to Figures 2 to 4 in that the plastic extrusion 38 also has no holes, but for attachment to a mounting surface 46 on the floor with a Ultrasonic welding lip 62 is provided, which in the in Figure 9 shown, assembled state in the mounting area 46 engages and represents a melting zone, so that between the mounting surface 46 and the plastic encapsulation 38 the bow springs 22 formed as a lead frame next to one Form fit also a material fit is present. Such Connection is particularly stable.

Abstract

The bow spring (22) is connected at one end to the first electrical component, with a bonded or welded contact (36). At the other end it is connected with the second electrical component by a spring contact (32).

Description

Stand der TechnikState of the art

Die Erfindung geht von einem elektrischen Kontaktelement der im Oberbegriff des Patentanspruches 1 näher definierten Art aus.The invention relates to an electrical contact element that defined in more detail in the preamble of claim 1 Kind of.

Ein derartiges Kontaktelement ist aus der Praxis bekannt und kann beispielsweise als Kontaktierung zwischen einem Sensor und einem Steuergerät einer elektrohydraulischen Bremse eingesetzt werden.Such a contact element is known from practice and can be used, for example, as a contact between a Sensor and a control unit of an electro-hydraulic Brake are used.

Ein bekanntes Kontaktelement der einleitend genannten Art umfaßt eine Bügelfeder, die an einem Bügelschenkel über eine Schweißanbindung mit einem Steuergerät verbunden ist.A known contact element of the type mentioned in the introduction includes a bow spring, which is attached to a bracket leg Welding connection is connected to a control unit.

Ferner ist es bekannt, zwei elektrische Baueinheiten über Steckkontakte miteinander zu verbinden, und zwar beispielsweise über einen sogenannten Action-Pin, der in eine Leiterplatte eingepreßt ist, oder auch über eine Einpreßverbindung bei einem Stanzgitter.Furthermore, it is known to have two electrical units To connect plug contacts to each other, for example via a so-called action pin, which is in a circuit board is pressed in, or also via a press-in connection with a lead frame.

Des weiteren ist es aus der Praxis auch bekannt, zwei elektrische Baueinheiten mittels auf eine Leiterplatte gelötete Steckkontakte miteinander zu verbinden. Dies erfolgt beispielsweise nach der sogenannten SMD (surface mounted devices)-Technik.Furthermore, it is also known from practice to connect two electrical units to one another by means of plug contacts soldered to a printed circuit board. This is done for example by the so-called SMD (s urface m ounted D evices) technique.

Bei Einpreßverbindungen besteht der Nachteil, daß bei der Montage Steckkräfte auftreten, die insbesondere bei einer sogenannten blinden Montage und Demontage nur schwer gegengehalten werden können.With press-in connections there is the disadvantage that with Assembly insertion forces occur, particularly in the case of a so-called blind assembly and disassembly difficult to counter can be.

Schweiß- und Lötanbindungen haben an sich den Nachteil, daß keine zerstörungsfreie Lösbarkeit zwischen den beiden miteinander verbundenen elektrischen Baueinheiten besteht und häufig auch ein großer Bauraum erforderlich ist.Welding and soldering connections have the disadvantage that no non-destructive solubility between the two connected electrical units and often a large installation space is required.

Vorteile der ErfindungAdvantages of the invention

Das elektrische Kontaktelement nach der Erfindung zur Herstellung einer Verbindung zwischen mindestens zwei elektrischen Baueinheiten mit den Merkmalen nach dem Oberbegriff des Patentanspruches 1, bei dem die Bügelfeder einerseits fest mit der ersten elektrischen Baueinheit verbindbar ist und einen Bond- oder Schweißkontakt aufweist und andererseits zur Verbindung mit der zweiten elektrischen Baueinheit mit einem Federkontakt ausgebildet ist, hat den Vorteil, daß es aufgrund des Federkontakts die Möglichkeit einer lösbaren Verbindung zwischen zwei elektrischen Baueinheiten bietet. Gleichzeitig ist über den Bondbereich bzw. - kontakt eine feste elektrische Verbindung beispielsweise mit einem Rechner herstellbar.The electrical contact element according to the invention for manufacturing a connection between at least two electrical Units with the features according to the generic term of claim 1, in which the bow spring on the one hand is firmly connected to the first electrical unit and has a bond or weld contact and on the other hand for connection to the second electrical unit is designed with a spring contact has the advantage that there is the possibility of a due to the spring contact detachable connection between two electrical units offers. At the same time, over the bond area or - contact a fixed electrical connection for example producible with a computer.

Der Federkontakt steht in Einbaulage beispielsweise mit einer Leiterplatte in Verbindung. Durch das Kontaktelement nach der Erfindung steht mithin einerseits ein Bondanschluß für eine Hybridkontaktierung und andererseits über den Federkontakt im weitesten Sinne eine Steckverbindung zur Verfügung.The spring contact is in the installed position, for example with a PCB in connection. Through the contact element According to the invention there is a bond connection for hybrid contacting and on the other hand via the spring contact in the broadest sense a plug connection is available.

Bei Einsatz des elektrischen Kontaktelements nach der Erfindung bei einer elektrohydraulischen Bremse steht die Bügelfeder beispielsweise über den Bondbereich mit einem Steuergerät, welche die erste elektrische Baueinheit bildet, und über das Kontaktelement mit einem Sensor in Verbindung, der die zweite elektrische Baueinheit bildet.When using the electrical contact element according to the invention in the case of an electrohydraulic brake, the bow spring stands for example, with a bond area Control unit, which forms the first electrical unit, and via the contact element in connection with a sensor, which forms the second electrical unit.

Aufgrund der Ausbildung der Bügelfeder mit einem Federkontakt und einer festen mechanischen Verbindung mit der ersten elektrischen Baueinheit sind die beiden elektrischen Baueinheiten blind miteinander fügbar und auch einfach trennbar. Dabei müssen vorteilhafterweise keine Montage- bzw. Demontagekräfte gegengehalten werden. Die elektrische und mechanische Kontaktierung der Bügelfeder und der zweiten elektrischen Baueinheit erfolgt rein über die Federkraft der Bügelfeder. Due to the formation of the bow spring with a spring contact and a firm mechanical connection with the first electrical unit are the two electrical Units can be joined together blindly and also simply separable. Advantageously, no assembly or disassembly forces are countered. The electrical and mechanical contacting of the bow spring and the second electrical unit takes place purely via the spring force the bow spring.

Das elektrische Kontaktelement nach der Erfindung ist überall dort einsetzbar, wo einerseits eine Bondverbindung zu einer elektrischen Baueinheit und andererseits eine trennbare Verbindung zu einer weiteren elektrischen Baueinheit gefordert ist. So kann das elektrische Kontaktelement nach der Erfindung im Automobilbereich vielfältige Anwendungen, wie bei einer elektrohydraulischen Bremse, finden oder aber auch bei sonstigen Elektrogeräten, wie Telefonen, eingesetzt werden.The electrical contact element according to the invention is everywhere can be used where there is a bond connection on the one hand an electrical unit and on the other hand a separable one Connection to another electrical unit is required. So can the electrical contact element after various applications of the invention in the automotive sector, like an electrohydraulic brake, or find also used in other electrical devices such as telephones become.

Das elektrische Kontaktelement nach der Erfindung bietet des weiteren hinsichtlich der Verbindung mit der zweiten elektrischen Baueinheit den Vorteil eines Toleranzausgleiches in Federrichtung und auch Vorteile hinsichtlich der Anforderungen an die Positionstoleranz der mit dem Kontaktelement korrespondierenden, beispielsweise von einer Leiterplatte gebildeten Kontaktstelle der zweiten elektrischen Baueinheit.The electrical contact element according to the invention offers further regarding the connection with the second electrical unit the advantage of tolerance compensation in the spring direction and also advantages in terms of Positional tolerance requirements with the contact element corresponding, for example from a circuit board formed contact point of the second electrical Unit.

Bei einer bevorzugten Ausführungsform des elektrischen Kontaktelements nach der Erfindung weist die Bügelfeder zumindest bereichsweise eine Kunststoffumspritzung auf. Die Kunststoffumspritzung, die auch als Isolierung für die beispielsweise aus einer Kupferlegierung hergestellte Bügelfeder dient, bietet die Möglichkeit, das elektrische Kontaktelement nachträglich an einer ebenfalls aus Kunststoff bestehenden Anbaufläche, beispielsweise derjenigen eines Steuergeräts, durch Verbindung der Kunststoffumspritzung mit der Anbaufläche zu befestigen. Dies ist insbesondere von Vorteil, da beim Spritzen eines Steuergeräts Bügelfedern als Einlegeteile ausgebildet sein müßten, was hohe Anforderungen an die Spritzgießform stellt und daher insbesondere aus Kostengründen nicht wünschenswert ist. Auch wären als Einlegeteile ausgebildete Bügelfedern nur schwer entformbar. Durch die Möglichkeit der nachträglichen Montage des Kontaktelements an der Anbaufläche entfallen diese Schwierigkeiten. Des weiteren bietet die Kunststoffumspritzung beim Bonden, d. h. bei der elektrischen Kontaktierung der Bügelfeder und der ersten elektrischen Baueinheit, eine hinreichende Stabilität, da bei dieser Verbindungstechnik die Bauteile ansonsten zum Schwingen neigen würden.In a preferred embodiment of the electrical contact element according to the invention, the bow spring has at least plastic injection molding in some areas. The Plastic encapsulation, which also serves as insulation for the example Bow spring made of a copper alloy serves, offers the possibility of the electrical contact element subsequently on a plastic one Acreage, for example that of one Control unit, by connecting the plastic encapsulation to be attached to the acreage. This is particularly so an advantage because when spraying a control unit, bow springs should be designed as inserts, which is very demanding to the injection mold and therefore in particular is not desirable for cost reasons. Also would be Bow springs designed as inserts are difficult mold release. Due to the possibility of retrofitting of the contact element on the mounting surface, these are omitted Trouble. Plastic injection molding also offers when bonding, d. H. in electrical contacting the bow spring and the first electrical assembly, one sufficient stability, since this connection technology the components would otherwise tend to vibrate.

Zweckmäßig ist die Kunststoffumspritzung sockelartig ausgebildet, so daß sie flächenbündig mit einer Anbaufläche verbunden werden kann.The plastic encapsulation is expediently configured in a base-like manner, so that they are flush with an acreage can be.

Um eine Vielzahl von elektrischen Verbindungen realisieren zu können, ist es vorteilhaft, daß die Kunststoffumspritzung einer Vielzahl von Bügelfedern zugeordnet ist, die jeweils einerseits fest mit der ersten elektrischen Baueinheit verbindbar sind und einen Bondkontakt aufweisen und andererseits zur Verbindung mit der zweiten elektrischen Baueinheit mit einem Federkontakt ausgebildet sind. Damit ist es möglich, mehrere Schnittstellen simultan zu kontaktieren.To realize a variety of electrical connections To be able to, it is advantageous that the plastic extrusion is assigned to a variety of bow springs, each on the one hand, firmly with the first electrical unit are connectable and have a bond contact and on the other hand for connection to the second electrical Unit are formed with a spring contact. In order to it is possible to contact several interfaces simultaneously.

Um das elektrische Kontaktelement auf einfache Weise an einer Anbaufläche beispielsweise der ersten elektrischen Baueinheit fixieren zu können, weist die Kunststoffumspritzung vorteilhaft Mittel zur Verbindung mit der Anbaufläche auf. To the electrical contact element in a simple manner on a Installation area of the first electrical unit, for example To be able to fix, the plastic encapsulation advantageous means for connection to the acreage.

Die Mittel zur Verbindung mit der Anbaufläche können eine Bohrung für einen Befestigungszapfen der Anbaufläche, einen Absatz zur Verbindung mit einer Prägelippe der Anbaufläche oder auch mindestens eine Ultraschallschweißleiste umfassen. Eine Ultraschallschweißleiste bietet den Vorteil, daß neben dem Formschluß auch ein Stoffschluß zwischen der Kunststoffumspritzung und der ebenfalls aus Kunststoff bestehenden Anbaufläche herstellbar ist. Zur Verbindung mit der Anbaufläche wird bei dieser Ausführungsform die Ultraschallschweißleiste über eine Ultraschallschwingung mit der Anbaufläche verschmolzen, wobei der Kunststoff erweicht und die Schweißleiste in die Anbaufläche eintaucht.The means of connection to the acreage can be one Hole for a mounting pin of the mounting surface, one Paragraph for connection with an embossed lip of the acreage or also include at least one ultrasonic welding bar. An ultrasonic welding bar has the advantage that in addition to the form fit also a material fit between the Plastic injection molding and that also made of plastic Cultivation area can be produced. To connect with the acreage in this embodiment is the ultrasonic welding bar via an ultrasonic vibration with the Fitted surface, whereby the plastic softens and immerses the sealing bar in the mounting surface.

Zum Schutz gegen Durchrieb kann das Kontaktelement mit Hartgold versehen sein.To protect against abrasion, the contact element can be used Hard gold.

Der Bondbereich kann mit Feingold versehen sein. Denkbar ist es aber auch, den Bondbereich mit einem anderen zum Bonden geeigneten Werkstoff, wie beispielsweise Aluminium, zu versehen.The bond area can be provided with fine gold. Conceivable but it is also to bond the bond area with another Bonding suitable material, such as aluminum, to provide.

Weitere Vorteile und vorteilhafte Ausgestaltungen des Gegenstandes nach der Erfindung sind der Beschreibung, der Zeichnung und den Patentansprüchen entnehmbar.Further advantages and advantageous configurations of the object according to the invention are the description of Drawing and the claims can be found.

Zeichnungdrawing

Drei Ausführungsbeispiele des elektrischen Kontaktelements nach der Erfindung sind in der Zeichnung schematisch vereinfacht dargestellt und werden in der nachfolgenden Beschreibung näher erläutert. Es zeigen

  • Figur 1 einen Schnitt durch ein Steuergerät mit einem Kontaktelement nach der Erfindung und einer aufgesetzten Sensorbaueinheit;
  • Figur 2 ein Kontaktelement nach der Erfindung im unmontierten Zustand;
  • Figur 3 einen Befestigungsbereich des Kontaktelements nach Figur 2 im montierten Zustand;
  • Figur 4 einen Schnitt durch den in Figur 3 dargestellten Befestigungsbereich;
  • Figur 5 eine perspektivische Ansicht einer alternativen Ausführungsform eines Kontaktelements nach der Erfindung im unmontierten Zustand;
  • Figur 6 eine ausschnittsweise Darstellung des Kontaktelements nach Figur 5 im montierten Zustand;
  • Figur 7 eine perspektivische Schnittdarstellung durch den Befestigungsbereich des Kontaktelements nach Figur 6;
  • Figur 8 eine weitere Ausführungsform eines Kontaktelements nach der Erfindung; und
  • Figur 9 einen Längsschnitt durch das Kontaktelement nach Figur 8 im montierten Zustand.
    • Three embodiments of the electrical contact element according to the invention are shown schematically simplified in the drawing and are explained in more detail in the following description. Show it
  • 1 shows a section through a control device with a contact element according to the invention and an attached sensor module;
  • Figure 2 shows a contact element according to the invention in the unassembled state;
  • 3 shows a fastening area of the contact element according to FIG. 2 in the assembled state;
  • FIG. 4 shows a section through the fastening region shown in FIG. 3;
  • Figure 5 is a perspective view of an alternative embodiment of a contact element according to the invention in the unassembled state;
  • FIG. 6 shows a detail of the contact element according to FIG. 5 in the assembled state;
  • FIG. 7 shows a perspective sectional illustration through the fastening region of the contact element according to FIG. 6;
  • Figure 8 shows a further embodiment of a contact element according to the invention; and
  • Figure 9 shows a longitudinal section through the contact element of Figure 8 in the assembled state.

    • Beschreibung der AusführungsbeispieleDescription of the embodiments

    In Figur 1 ist eine Steuergerätebaueinheit 10 einer hier nicht näher dargestellten elektrohydraulischen Bremse zum Einsatz bei einer Bremsanlage eines Kraftfahrzeuges dargestellt. In Figure 1, a control unit 10 is one here not shown electro-hydraulic brake for Use in a brake system of a motor vehicle shown.

    Die Steuergerätebaueinheit 10 umfaßt ein nach einem Spritzgießverfahren hergestelltes Gehäuse 12, das über eine Befestigungsschraube 14 mit einer Sensorbaueinheit 16 verbunden ist, welche u. a. einen Drucksensor 18 umfaßt, wobei auf den sonstigen Aufbau der Sensorbaueinheit 16 im weiteren nicht im einzelnen eingegangen wird.The control unit 10 comprises an injection molding process Manufactured housing 12, which has a fastening screw 14 connected to a sensor module 16 is which u. a. a pressure sensor 18, wherein on the other structure of the sensor module 16 in the further is not discussed in detail.

    Der Drucksensor 18 steht mit einer Leiterplatte 20 in Verbindung, an welcher mehrere, nebeneinander angeordnete Bügelfedern 22 angreifen, die an dem Gehäuse 12 des Steuergerätebaueinheit 10 befestigt sind, wobei bei der in Figur 1 gewählten Darstellung nur eine Bügelfeder 22 zu erkennen ist.The pressure sensor 18 is connected to a printed circuit board 20, on which several bow springs arranged side by side 22 attack the housing 12 of the control unit 10 are attached, with the in FIG selected representation only a bow spring 22 to recognize is.

    Zur elektrischen Kopplung mit der Steuergerätebaueinheit 10 umfassen die Bügelfedern 22 jeweils einen Bondbereich 24 und zur elektrischen Kopplung mit der Leiterplatte 20 umfassen die Bügelfeder 22, die als Stanzgitter ausgebildet sind, jeweils einen Federkontakt 26. Im Bereich der Befestigung der Bügelfedern 22 an dem Gehäuse 12 der Steuergerätebaueinheit 10 umfassen die Bügelfedern 22 eine in Figur 1 nicht näher dargestellte Kunststoffumspritzung, die den Bügelfedern 22 gemeinsam zugeordnet ist.For electrical coupling with the control unit 10 The bow springs 22 each comprise a bonding area 24 and for electrical coupling to the circuit board 20 the bow spring 22, which is designed as a lead frame are each a spring contact 26. In the area of the attachment the bow springs 22 on the housing 12 of the control unit 10 include the bow springs 22 one in figure 1 plastic molding not shown, which the Bow springs 22 is assigned together.

    In den Figuren 2 bis 4 ist ein erstes Ausführungsbeispiel eines elektrischen Kontaktelements zum Einbau in eine Steuergerätebaueinheit der in Figur 1 dargestellten Art gezeigt. Das Kontaktelement 30 weist eine Vielzahl von parallel verlaufenden Bügelfedern 22 auf, von denen nur zwei vollständig dargestellt sind und zwei angedeutet sind. Die Bügelfedern 22, die aus einer Kupferlegierung gefertigt sind, weisen jeweils an einem Ende einen Federkontakt 32 zur Verbindung mit einer Leiterplatte auf. An dem Federkontakt 32 ist eine Kontaktkalotte 34 ausgebildet. An dem den Federkontakt 32 abgewandten Endbereich weisen die Bügelfedern 22 jeweils einen Bond- oder Schweißbereich bzw. Bondoder Schweißkontakt 36 zur Verbindung mit der Steuergerätebaueinheit auf.A first exemplary embodiment is shown in FIGS an electrical contact element for installation in a control unit of the type shown in Figure 1. The contact element 30 has a plurality of parallel extending bow springs 22, of which only two are fully shown and two are indicated. The Bow springs 22 made of a copper alloy each have a spring contact 32 at one end for connection to a printed circuit board. On the spring contact 32 a contact cap 34 is formed. On that End contacts facing away from spring contact 32 have the clip springs 22 each have a bond or welding area or bondoder Welding contact 36 for connection to the control unit on.

    In dem Bereich des Bondkontakts 36 sind die Bügelfedern 22 jeweils von einer gemeinsamen Kunststoffumspritzung 38 aufgenommen, so daß der Bond- oder Schweißkontakt 36 freiliegt. Die Bügelfedern 22 können mittels eines in Querrichtung verlaufenden Haltebügels 40 aus Kunststoff in der Kunststoffumspritzung 38 gesichert sein.The bow springs 22 are in the area of the bond contact 36 each taken up by a common plastic encapsulation 38, so that the bond or weld contact 36 is exposed. The bow springs 22 can be moved in the transverse direction extending bracket 40 made of plastic in the Plastic extrusion 38 be secured.

    Die Bondkontakte 36 der als Stanzgitter ausgebildeten Bügelfeder 22 sind jeweils mit einer bondbaren Oberfläche versehen. Der Federkontakt 32 der Bügelfeder 22 ist jeweils mit Hartgold versehen.The bond contacts 36 of the bow spring designed as a lead frame 22 are each with a bondable surface Mistake. The spring contact 32 of the bow spring 22 is in each case provided with hard gold.

    Die sockelartig ausgebildete Kunststoffumspritzung 38 weist Bohrungen 42 auf, über die das Kontaktelement 30 an Befestigungszapfen 44 einer Anbaufläche 46 befestigbar ist.The molded plastic encapsulation 38 has Bores 42 through which the contact element 30 on fastening pins 44 a mounting surface 46 can be fastened.

    Zur Befestigung des Kontaktelements 30 an der Anbaufläche 46 wird die Kunststoffumspritzung 38 über die Bohrungen 42 auf die Befestigungszapfen 44 gesteckt. Anschließend werden die aus Kunststoff gefertigten Befestigungszapfen 44 verpreßt, so daß sie stirnseitig die Form eines Kugelkopfes aufweisen und das Kontaktelement 38 formschlüssig und gesichert an der Anbaufläche 46 anliegt, wie Figur 4 zu entnehmen ist.For fastening the contact element 30 to the mounting surface 46 is the plastic encapsulation 38 through the holes 42 put on the mounting pin 44. Then be the fastening pins 44 made of plastic are pressed, so that they face the shape of a spherical head have and the contact element 38 form-fitting and secured rests on the mounting surface 46, as can be seen in FIG. 4 is.

    Das in den Figuren 5 bis 7 dargestellte Ausführungsbeispiel eines Kontaktelements 50 unterscheidet sich von dem Kontaktelement nach den Figuren 2 bis 4 dadurch, daß die Kunststoffumspritzung 38 zur Befestigung an einer Anbaufläche 46 keine Bohrungen, sondern einen Absatz 52 aufweist, der umlaufend im Verbindungsbereich zu der Anbaufläche 46 an der Umspritzung 38 angeordnet ist und mit einer Prägelippe 54 der Anbaufläche 46 zusammenwirkt. Im übrigen entspricht der Aufbau des Kontaktelements 50 demjenigen des in den Figuren 2 bis 4 dargestellten Kontaktelements.The embodiment shown in Figures 5 to 7 a contact element 50 differs from the contact element according to Figures 2 to 4 in that the Plastic encapsulation 38 for attachment to a mounting surface 46 has no bores but a shoulder 52, the circumferential in the connection area to the mounting surface 46 is arranged on the extrusion coating 38 and with an embossed lip 54 of the acreage 46 cooperates. Otherwise corresponds the structure of the contact element 50 to that of the in Figures 2 to 4 shown contact element.

    Zur Befestigung des Kontaktelements 30 an der Anbaufläche 46 wird die Kunststoffumspritzung 38 derart an der Anbaufläche 46 angeordnet, daß sie mit ihrem Boden flächenbündig an letzterer anliegt und der Absatz 52 an der Prägelippe 54 angreift. Anschließend wird die Prägelippe 54 mittels eines geeigneten Werkzeuges geprägt, so daß sich ein zumindest dreiseitig umlaufender, sogenannter Prägewulst 56 bildet, der zumindest teilweise den Absatz 52 der Kunststoffumspritzung 38 überdeckt, wie den Figuren 6 und 7 zu entnehmen ist.For fastening the contact element 30 to the mounting surface The plastic encapsulation 38 becomes 46 on the mounting surface 46 arranged that they are flush with their floor abuts the latter and the shoulder 52 on the embossing lip 54 attacks. Then the embossing lip 54 is removed by means of a suitable tool, so that there is at least one forms so-called embossing bead 56 on three sides, the at least partially paragraph 52 of the plastic encapsulation 38 covers, as can be seen in FIGS. 6 and 7 is.

    Das in den Figuren 8 und 9 dargestellte Ausführungsbeispiel eines Kontaktelements 60 unterscheidet sich von demjenigen nach den Figuren 2 bis 4 dadurch, daß die Kunststoffumspritzung 38 ebenfalls keine Bohrungen aufweist, sondern zur Befestigung an einer Anbaufläche 46 am Boden mit einer Ultraschallschweißlippe 62 versehen ist, die in dem in Figur 9 dargestellten, montierten Zustand in die Anbaufläche 46 eingreift und eine Schmelzzone darstellt, so daß zwischen der Anbaufläche 46 und der Kunststoffumspritzung 38 der als Stanzgitter ausgebildeten Bügelfedern 22 neben einem Formschluß auch ein Stoffschluß vorliegt. Eine derartige Verbindung ist besonders stabil.The embodiment shown in Figures 8 and 9 a contact element 60 differs from that according to Figures 2 to 4 in that the plastic extrusion 38 also has no holes, but for attachment to a mounting surface 46 on the floor with a Ultrasonic welding lip 62 is provided, which in the in Figure 9 shown, assembled state in the mounting area 46 engages and represents a melting zone, so that between the mounting surface 46 and the plastic encapsulation 38 the bow springs 22 formed as a lead frame next to one Form fit also a material fit is present. Such Connection is particularly stable.

    Beim Montieren des Kontaktelements 60 an der Anbaufläche 46 wird die Ultraschallschweißfläche 62 über eine Ultraschallschwingung mit der Anbaufläche 46 derart verschmolzen, daß der Kunststoff erweicht und die Ultraschallschweißleiste 62 in die Anbaufläche 46 eintaucht.When mounting the contact element 60 on the mounting surface 46 becomes the ultrasonic welding surface 62 via an ultrasonic vibration merged with the acreage 46 such that the plastic softens and the ultrasonic welding bar 62 immersed in the area 46.

    Claims (11)

    Elektrisches Kontaktelement zur Herstellung einer Verbindung zwischen mindestens zwei elektrischen Baueinheiten (10, 16), umfassend mindestens eine Bügelfeder (22), dadurch gekennzeichnet, daß die Bügelfeder (22) einerseits fest mit der ersten elektrischen Baueinheit (12) verbindbar ist und einen Bond- oder Schweißkontakt (24, 36) aufweist und andererseits zur Verbindung mit der zweiten elektrischen Baueinheit (16) mit einem Federkontakt (26, 32) ausgebildet ist.Electrical contact element for establishing a connection between at least two electrical structural units (10, 16), comprising at least one bow spring (22), characterized in that the bow spring (22) can be firmly connected on the one hand to the first electrical structural unit (12) and a bond or has a welding contact (24, 36) and, on the other hand, is designed for connection to the second electrical unit (16) with a spring contact (26, 32). Elektrisches Kontaktelement nach Anspruch 1, dadurch gekennzeichnet, daß die Bügelfeder (22) zumindest bereichsweise eine Kunststoffumspritzung (38) aufweist.Electrical contact element according to Claim 1, characterized in that the bow spring (22) has a plastic encapsulation (38) at least in some areas. Elektrisches Kontaktelement nach Anspruch 2, dadurch gekennzeichnet, daß die Kunststoffumspritzung (38) sokkelartig ausgebildet ist. Electrical contact element according to Claim 2, characterized in that the plastic encapsulation (38) is designed like a socket. Elektrisches Kontaktelement nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Kunststoffumspritzung (38) mehreren Bügelfedern (22) zugeordnet ist.Electrical contact element according to claim 2 or 3, characterized in that the plastic encapsulation (38) is associated with a plurality of bow springs (22). Elektrisches Kontaktelement nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Kunststoffumspritzung (38) Mittel (42, 52, 62) zur Verbindung mit einer Anbaufläche (46) aufweist.Electrical contact element according to one of claims 2 to 4, characterized in that the plastic encapsulation (38) has means (42, 52, 62) for connection to a mounting surface (46). Elektrisches Kontaktelement nach Anspruch 5, dadurch gekennzeichnet, daß die Mittel mindestens eine Bohrung (42) für einen Befestigungszapfen (44) der Anbaufläche (46) umfassen.Electrical contact element according to claim 5, characterized in that the means comprise at least one bore (42) for a fastening pin (44) of the mounting surface (46). Elektrisches Kontaktelement nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Mittel einen Absatz (52) zur Verbindung mit einer Prägelippe (54) der Anbaufläche (46) umfassen.Electrical contact element according to claim 5 or 6, characterized in that the means comprise a shoulder (52) for connection to an embossed lip (54) of the mounting surface (46). Elektrisches Kontaktelement nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, daß die Mittel mindestens eine Ultraschall-Schweißleiste (62) umfassen.Electrical contact element according to one of claims 5 to 7, characterized in that the means comprise at least one ultrasonic welding bar (62). Elektrisches Kontaktelement nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Federkontakt (32) mit einer Kontaktkalotte (34) versehen ist.Electrical contact element according to one of claims 1 to 8, characterized in that the spring contact (32) is provided with a contact cap (34). Elektrisches Kontaktelement nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Federkontakt (26, 32) mit Hartgold versehen ist. Electrical contact element according to one of claims 1 to 9, characterized in that the spring contact (26, 32) is provided with hard gold. Elektrisches Kontaktelement nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß der Bondkontakt (24, 36) mit einer bondbaren Oberfläche versehen ist.Electrical contact element according to one of claims 1 to 10, characterized in that the bond contact (24, 36) is provided with a bondable surface.
    EP03011819A 2002-06-15 2003-05-26 Electrical contact element Expired - Lifetime EP1372221B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10226680 2002-06-15
    DE10226680A DE10226680A1 (en) 2002-06-15 2002-06-15 Electrical contact element

    Publications (3)

    Publication Number Publication Date
    EP1372221A2 true EP1372221A2 (en) 2003-12-17
    EP1372221A3 EP1372221A3 (en) 2005-01-05
    EP1372221B1 EP1372221B1 (en) 2007-05-16

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    EP03011819A Expired - Lifetime EP1372221B1 (en) 2002-06-15 2003-05-26 Electrical contact element

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    EP (1) EP1372221B1 (en)
    AT (1) ATE362662T1 (en)
    DE (2) DE10226680A1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2007106562A1 (en) * 2006-03-15 2007-09-20 Molex Incorporated Sealed plug connector

    Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP0572195A1 (en) * 1992-05-27 1993-12-01 Yamaichi Electric Co., Ltd. Socket for IC package
    US6106332A (en) * 1996-10-15 2000-08-22 The Whitaker Corporation Board lock for electrical connector
    US6190213B1 (en) * 1998-01-07 2001-02-20 Amphenol-Tuchel Electronics Gmbh Contact element support in particular for a thin smart card connector
    US20010034162A1 (en) * 1998-12-10 2001-10-25 Framatome Connectors International Courbevoie Connector with prestressed contacts and its use

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP0572195A1 (en) * 1992-05-27 1993-12-01 Yamaichi Electric Co., Ltd. Socket for IC package
    US6106332A (en) * 1996-10-15 2000-08-22 The Whitaker Corporation Board lock for electrical connector
    US6190213B1 (en) * 1998-01-07 2001-02-20 Amphenol-Tuchel Electronics Gmbh Contact element support in particular for a thin smart card connector
    US20010034162A1 (en) * 1998-12-10 2001-10-25 Framatome Connectors International Courbevoie Connector with prestressed contacts and its use

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2007106562A1 (en) * 2006-03-15 2007-09-20 Molex Incorporated Sealed plug connector

    Also Published As

    Publication number Publication date
    DE50307275D1 (en) 2007-06-28
    EP1372221B1 (en) 2007-05-16
    EP1372221A3 (en) 2005-01-05
    DE10226680A1 (en) 2003-12-24
    ATE362662T1 (en) 2007-06-15

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