EP1097302B1 - Connector for a fuel pump of a motor vehicle - Google Patents

Connector for a fuel pump of a motor vehicle Download PDF

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Publication number
EP1097302B1
EP1097302B1 EP00931095A EP00931095A EP1097302B1 EP 1097302 B1 EP1097302 B1 EP 1097302B1 EP 00931095 A EP00931095 A EP 00931095A EP 00931095 A EP00931095 A EP 00931095A EP 1097302 B1 EP1097302 B1 EP 1097302B1
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EP
European Patent Office
Prior art keywords
fuel
connector
plastic
connector according
plug
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.)
Expired - Lifetime
Application number
EP00931095A
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German (de)
French (fr)
Other versions
EP1097302A1 (en
Inventor
Jürgen ZOELL
Ralf Muehlhausen
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Siemens AG
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Siemens AG
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Publication date
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Publication of EP1097302A1 publication Critical patent/EP1097302A1/en
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Publication of EP1097302B1 publication Critical patent/EP1097302B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • 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
    • H01R13/46—Bases; Cases
    • H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • 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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M2037/082—Details of the entry of the current supply lines into the pump housing, e.g. wire connectors, grommets, plugs or sockets
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S439/00—Electrical connectors
    • Y10S439/933—Special insulation
    • Y10S439/936—Potting material or coating, e.g. grease, insulative coating, sealant or, adhesive

Definitions

  • the capacitor does not have to be overmolded, since it already over a fuel-resistant casing has.
  • the capacitor is encapsulated. That allows the Use of a non-jacketed and therefore cheaper capacitor. Of the As a result, plug according to the invention is inexpensive to produce.
  • the strands of carbon brushes are welded to the plug. To the Protection of the joints are these and part of the strands also molded with plastic. During the injection process the plastic becomes subjected to very high pressure, to ensure that for this process flowable plastic made the entire injection mold fills and thus a high imaging accuracy is achieved. By However, there is a risk of the plastic under high pressure that this penetrates into the strand. By the invaded and hardened Plastic can be between the individual wires of the strand form sharp edges. This creates a precise bending point, so that it under constant stress of the strand on bending to cut through the individual wires comes. This damage to the strand can last until it breaks lead the strand. This danger is advantageously avoided by the Litz is mechanically compressed in the area to be encapsulated. With This compaction will reduce the voids between the cavities Wires of the strand reached so that no plastic can penetrate.
  • the strands can also without mechanical compaction, when the strands in the area the edge of the plastic of a fuel-resistant sealing element are surrounded.
  • This sealing element may for example be a metal sleeve be.
  • overmolded plastic formed so that it has mold elements.
  • form elements can latching and connecting elements or sealing surfaces of the connector but also be holding elements.
  • the ground contact is a metal spring, which on its Junction with the plug is also molded with plastic.
  • FIG. 2 shows parts of the contact pins 2, the coils 3, the copper strands 4, the metal spring 8 and the capacitor 6 of the plug 1 of Figure 1 with Plastic encapsulated, being used as a plastic POM 9. It is clearly seen that all joints with POM 9 overmoulded and thus effectively protected against fuel attack. Around Coils 3 are arranged in the POM 9 recesses such that the turns the coils 3 are exposed. Thus, the turns for the Cooling of the coils 3 continue to be lapped by the fuel. After this Encasing the web 7 is severed between the pins 2, so that both pins 2 are electrically isolated from each other.
  • Figure 3 shows a bearing plate 10 of a fuel pump with a Outlet 12 for the fuel to be pumped.
  • the plug 1 is mounted in the Condition attached to the bearing plate 10.
  • the metal spring 8 is located on Edge of the bearing plate 10 at.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Fuel-Injection Apparatus (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

Connectors for fuel pumps in motor vehicles have fuel flowing around them. Apart from the connections for the electrical supply lines, such connectors make contact with further electrical components. Corrosive components in fuels attack the connecting points of the connector to the electrical components, so that this can lead to failure of the fuel pump. The new connector is intended to have connecting points which are no longer attacked by the fuel. By extrusion coating parts of the connector with plastic, the connecting points are effectively protected against attack by fuel. Recesses in the plastic extrusion coating allow fuel to still flow around parts of the connector for cooling, while the regions of the connector which are at risk are separated from the fuel.

Description

Die Erfindung betrifft einen Stecker für eine Kraftstoffpumpe eines Kraftfahrzeugs, zur Kontaktierung der Kraftstoffpumpe mit den elektrischen Zuleitungen. Derartige Kraftstoffpumpen werden in der Regel in dem Kraftstoffbehälter des Kraftfahrzeuges angeordnet, um den Kraftstoff aus dem Kraftstoffbehälter zur Brennkraftmaschine zu fördern.The invention relates to a plug for a fuel pump a motor vehicle, for contacting the fuel pump with the electrical leads. Such fuel pumps are usually in the fuel tank of the motor vehicle arranged to remove the fuel from the fuel tank to promote the internal combustion engine.

Eine Kraftstoffpumpe mit einem solchen Stecker ist beispielsweise aus der US 5,697,769 bekannt. Die Kraftstoffpumpe besitzt zudem eine Pumpenstufe, die von einem Elektromotor angetrieben wird. Die Kraftstoffpumpen sind dabei so aufgebaut, dass in ein Baulager der Kraftstoffpumpe die Pumpstufe am unteren Ende angeordnet ist. An die Pumpstufe schließt sich ein Elektromotor an und ein Lagerschild mit dem außerhalb des Gehäuses der Kraftstoffpumpe angeordneten Stecker bildet den oberen Abschluss der Kraftstoffpumpe. Der Stecker umfasst neben den Kontaktstiften für die Steckverbindung und den Anschlüssen für den Elektromotor Induktivitäten und Kapazitäten zur Entstörung sowie Kohlebürsten für den Elektromotor. Die in separaten Aufnahmen des Lagerschildes angeordneten Kohlebürsten stehen über je eine Litze mit dem Stecker in Kontakt. Die einzelnen Bestandteile des Steckers sind entweder durch Steckverbindungen, Schweiß- oder Lötstellen miteinander verbunden. Aufgrund der Anordnung der Kraftstoffpumpe im Kraftstoffbehälter wird der Stecker vom Kraftstoff umspült. Kraftstoffe sind aggressive Medien, die die Verbindungsstellen des Steckers angreifen. Insbesondere wenn der Kraftstoff Methanol oder Ethanol enthält, werden die Verbindungsstellen derart angegriffen, dass sie langfristig zerstört werden und es damit zum Ausfall der Kraftstoffpumpe kommt. Der Stecker ist teilweise von Kunststoff umgeben. A fuel pump with such a plug is for example from US 5,697,769. The fuel pump has also a pump stage driven by an electric motor becomes. The fuel pumps are structured in this way, that in a construction warehouse of the fuel pump, the pumping stage at the bottom End is arranged. The pumping stage is followed Electric motor and a bearing plate with the outside of the housing the fuel pump arranged plug forms the upper end of the fuel pump. The plug includes beside the pins for the connector and the terminals for the electric motor inductors and capacitors for suppression and carbon brushes for the electric motor. The In separate shots of the bearing plate arranged carbon brushes are each a strand with the plug in contact. The individual components of the plug are either through Connections, welding or solder joints connected. Due to the arrangement of the fuel pump in the fuel tank the plug is lapped by the fuel. fuels are aggressive media that are the junctions of the Attack plug. Especially if the fuel is methanol or ethanol, the junctions become so attacked that they are destroyed in the long run and it with it comes to the failure of the fuel pump. The plug is partially surrounded by plastic.

Der Erfindung liegt die Aufgabe zugrunde, einen Stecker für eine in einem Kraftstoffbehälter angeordnete Kraftstoffpumpe zu schaffen, dessen Lebensdauer unabhängig von dem verwendeten Kraftstoff ist. Ein derartiger Stecker soll einfach und kostengünstig herzustellen sein.The invention has the object of providing a plug for a in a Fuel tank arranged to provide fuel pump, its life regardless of the fuel used. Such a Plug should be easy and inexpensive to manufacture.

Erfindungsgemäß wird die Aufgabe mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen beschrieben.According to the invention the object with the features of claim 1 solved. Advantageous embodiments are described in the subclaims.

Gelöst wird die Aufgabe dadurch, daß Teile des Steckers, insbesondere die Verbindungsstellen mit Kunststoff umspritzt sind. Dadurch wird erreicht, daß die Verbindungsstellen nicht mehr mit dem Kraftstoff in Kontakt kommen und damit vor der langfristigen Zerstörung durch die aggressiven Bestandteile des Kraftstoffs geschützt sind. Der Vorteil des erfindungsgemäßen Steckers besteht darin, daß das Umspritzen mit Kunststoff sehr kostengünstig ist und somit ohne großen Aufwand ein wirksamer Schutz des Steckers erreicht wird.The problem is solved by parts of the plug, in particular the joints are molded with plastic. This will achieve that the joints are no longer in contact with the fuel come and thus face the long-term destruction by the aggressive Components of the fuel are protected. The advantage of the invention Steckers is that the overmolding with plastic very is inexpensive and thus without great effort an effective protection of the plug is reached.

Es ist vorteilhaft, nur einzelne Bereiche des Steckers zu umspritzen. In Folge dessen wird der Materialeinsatz beim Umspritzen reduziert. Dadurch wird das Volumen des Steckers nicht unnötig vergrößert, so daß der Stecker relativ klein baut. Des weiteren lassen sich die Vorteile eines kraftstoffumspülten Steckers nutzen. So ist es günstig, die Induktivitäten nicht zu umspritzen. Durch das Umspülen mit Kraftstoff wird so beim Betrieb der Kraftstoffpumpe eine übermäßige Erwärmung der Induktivitäten verhindert.It is advantageous to overmold only individual areas of the plug. In As a result, the use of material during encapsulation is reduced. Thereby the volume of the plug is not unnecessarily increased, so that the Plug relatively small builds. Furthermore, the advantages of a use fuel-purged plug. So it is cheap, the inductors not to overmold. By flushing with fuel is so in operation the fuel pump overheating of the inductors prevented.

Ebenso muß der Kondensator nicht umspritzt werden, da er bereits über eine kraftstoffbeständige Ummantelung verfügt. In einer anderen vorteilhaften Ausgestaltung ist der Kondensator umspritzt. Das ermöglicht den Einsatz eines nicht ummantelten und damit billigeren Kondensators. Der erfindungsgemäße Stecker ist in Folge dessen kostengünstig herstellbar.Likewise, the capacitor does not have to be overmolded, since it already over a fuel-resistant casing has. In another advantageous Embodiment, the capacitor is encapsulated. That allows the Use of a non-jacketed and therefore cheaper capacitor. Of the As a result, plug according to the invention is inexpensive to produce.

Die Litzen der Kohlebürsten sind mit dem Stecker verschweißt. Zum Schutz der Verbindungsstellen sind diese und ein Teil der Litzen ebenfalls mit Kunststoff umspritzt. Während des Spritzvorgangs wird der Kunststoff mit sehr hohem Druck beaufschlagt, um zu gewährleisten, daß der für diesen Vorgang fließfähig gemachte Kunststoff das gesamte Spritzwerkzeug ausfüllt und somit eine hohe Abbildegenauigkeit erreicht wird. Durch den unter hohem Druck stehenden Kunststoff besteht jedoch die Gefahr, daß dieser in die Litze eindringt. Durch den eingedrungenen und erhärteten Kunststoff können sich zwischen den einzelnen Drähten der Litze scharfe Kanten bilden. Dadurch entsteht ein genauer Biegepunkt, so daß es bei Dauerbeanspruchung der Litze auf Biegung zum Durchtrennen der einzelnen Drähte kommt. Diese Schädigung der Litze kann bis zum Bruch der Litze führen. Diese Gefahr wird vorteilhaft dadurch vermieden, daß die Litze in dem zu umspritzenden Bereich mechanisch verdichtet wird. Mit dieser Verdichtung wird eine Verringerung der Hohlräume zwischen den Drähten der Litze erreicht, so daß kein Kunststoff eindringen kann.The strands of carbon brushes are welded to the plug. To the Protection of the joints are these and part of the strands also molded with plastic. During the injection process the plastic becomes subjected to very high pressure, to ensure that for this process flowable plastic made the entire injection mold fills and thus a high imaging accuracy is achieved. By However, there is a risk of the plastic under high pressure that this penetrates into the strand. By the invaded and hardened Plastic can be between the individual wires of the strand form sharp edges. This creates a precise bending point, so that it under constant stress of the strand on bending to cut through the individual wires comes. This damage to the strand can last until it breaks lead the strand. This danger is advantageously avoided by the Litz is mechanically compressed in the area to be encapsulated. With This compaction will reduce the voids between the cavities Wires of the strand reached so that no plastic can penetrate.

In einer anderen vorteilhaften Ausgestaltung lassen sich die Litzen auch ohne mechanische Verdichtung umspritzen, wenn die Litzen im Bereich der Kante des Kunststoffs von einem kraftstoffbeständigem Dichtelement umgeben sind. Dieses Dichtelement kann beispielsweise eine Metallhülse sein.In another advantageous embodiment, the strands can also without mechanical compaction, when the strands in the area the edge of the plastic of a fuel-resistant sealing element are surrounded. This sealing element may for example be a metal sleeve be.

Überraschenderweise wurde jedoch gefunden, daß es ausreichend ist, die Litzen auch ohne mechanische Verdichtung oder Dichtelement zu umspritzen, da die Litze hauptsächlich nur während der Montage bewegt wird und über die Lebensdauer der Kraftstoffpumpe nur eine geringe Beweglichkeit aufgrund des Verschleißes mit dem damit verbundenen Nachstellen der Kohlebürsten erforderlich ist.Surprisingly, however, it has been found that it is sufficient that Stranding without mechanical compression or sealing element, because the strand is mainly moved only during assembly and over the life of the fuel pump only a small mobility due to wear and tear with the associated adjustment the carbon brushes is required.

Als besonders vorteilhaft hat sich der Einsatz von Polyoxymethylen als Kunststoff für das Umspritzen herausgestellt.Particularly advantageous is the use of polyoxymethylene as Plastic exposed for overmolding.

In einer weiteren vorteilhaften Ausgestaltung ist der umspritzte Kunststoff derart ausgebildet, daß er Formelemente aufweist. Diese Formelemente können Rast- und Verbindungselemente oder Dichtflächen der Steckverbindung aber auch Halteelemente sein. Mittels dieser Formelemente ist zudem eine automatische Montage des Steckers mit dem Lagerschild möglich.In a further advantageous embodiment of the overmolded plastic formed so that it has mold elements. These form elements can latching and connecting elements or sealing surfaces of the connector but also be holding elements. By means of these form elements is In addition, an automatic assembly of the plug with the end shield possible.

In vorteilhafter Weise ist der Massekontakt eine Metallfeder, die an ihrer Verbindungsstelle mit dem Stecker ebenfalls mit Kunststoff umspritzt ist.In an advantageous manner, the ground contact is a metal spring, which on its Junction with the plug is also molded with plastic.

An einem Ausführungsbeispiel wird die Erfindung näher erläutert. Dabei zeigen die Figuren in:

Figur 1
einen Stecker einer Kraftstoffpumpe ohne Umspritzung,
Figur 2
einen Stecker einer Kraftstoffpumpe mit Umspritzung,
Figur 3
eine Draufsicht auf ein Lagerschild mit dem Stecker einer Kraftstoffpumpe.
In one embodiment, the invention is explained in detail. The figures show in:
FIG. 1
a plug of a fuel pump without encapsulation,
FIG. 2
a plug of a fuel pump with encapsulation,
FIG. 3
a plan view of a bearing plate with the plug of a fuel pump.

Der in Figur 1 dargestellte Stecker 1 besteht aus zwei Kontaktstiften 2, zwei auf jeweils einem Kontaktstift 2 aufgeschweißten Spulen 3 und über Kupferlitzen 4 mit den Kontaktstiften 2 verbundenen Kohlebürsten 5. Die Kupferlitzen 4 sind ebenfalls mit den Kontaktstiften 2 verschweißt. Des weiteren ist ein nicht ummantelter Kondensator 6 am Stecker 1 angeschweißt. Zur besseren Handhabung des Steckers 1 während der Herstellung sind die Kontaktstifte 2 an ihrem unteren Ende durch einen Steg 7 verbunden. An einem der Kontaktstifte 2 ist eine Metallfeder als Massekontakt 8 angeschweißt.The plug 1 shown in Figure 1 consists of two pins 2, two on each a pin 2 welded coils 3 and over Copper strands 4 carbon brushes connected to the contact pins 2 5. Die Copper strands 4 are also welded to the contact pins 2. Of Further, a non-jacketed capacitor 6 is welded to the plug 1. For better handling of the plug 1 during manufacture are the contact pins 2 at its lower end by a web. 7 connected. At one of the contact pins 2 is a metal spring as ground contact 8 welded.

In Figur 2 sind Teile der Kontaktstifte 2, der Spulen 3, der Kupferlitzen 4, der Metallfeder 8 und der Kondensator 6 des Steckers 1 aus Figur 1 mit Kunststoff umspritzt, wobei als Kunststoff POM 9 eingesetzt wird. Es ist deutlich zu sehen, daß alle Verbindungsstellen mit POM 9 umspritzt und somit wirksam gegen einen Kraftstoffangriff geschützt sind. Im Bereich der Spulen 3 sind im POM 9 Ausnehmungen derart angeordnet, daß die Windungen der Spulen 3 freiliegen. Somit können die Windungen für die Kühlung der Spulen 3 weiterhin vom Kraftstoff umspült werden. Nach dem Umspritzen wird der Steg 7 zwischen den Kontaktstiften 2 durchtrennt, so daß beide Kontaktstifte 2 elektrisch gegeneinander isoliert sind.FIG. 2 shows parts of the contact pins 2, the coils 3, the copper strands 4, the metal spring 8 and the capacitor 6 of the plug 1 of Figure 1 with Plastic encapsulated, being used as a plastic POM 9. It is clearly seen that all joints with POM 9 overmoulded and thus effectively protected against fuel attack. Around Coils 3 are arranged in the POM 9 recesses such that the turns the coils 3 are exposed. Thus, the turns for the Cooling of the coils 3 continue to be lapped by the fuel. After this Encasing the web 7 is severed between the pins 2, so that both pins 2 are electrically isolated from each other.

Figur 3 zeigt ein Lagerschild 10 einer Kraftstoffpumpe einen mit einem Auslaß 12 für den zu fördernden Kraftstoff. Der Stecker 1 ist im montierten Zustand auf das Lageschild 10 aufgesteckt. Die Metallfeder 8 liegt am Rand des Lagerschildes 10 an. Bei der Montage des Lagerschildes 10 mit dem metallischen Gehäuse der Kraftstoffpumpe wird so der Massekontakt hergestellt. Die Kohlebürsten 5 sind in Aufnahmen 11 des Lagerschildes 10 derart beweglich gelagert, daß sie sich bei Verschleiß durch den nicht dargestellten, unter dem Lagerschild 10 angeordneten Elektromotor, nach unten bewegen können.Figure 3 shows a bearing plate 10 of a fuel pump with a Outlet 12 for the fuel to be pumped. The plug 1 is mounted in the Condition attached to the bearing plate 10. The metal spring 8 is located on Edge of the bearing plate 10 at. When installing the bearing plate 10 with The metallic housing of the fuel pump is thus the ground contact produced. The carbon brushes 5 are in receptacles 11 of the bearing plate 10 so movably mounted that they do not wear out by the shown, arranged under the end plate 10 electric motor, after can move down.

Claims (10)

  1. Connector (1) for a fuel pump which is arranged in a fuel tank in a motor vehicle, comprising contact pins (2) and electrical components such as coils (3), braids (4) and a capacitor (6), which are connected to the contact pins (2) via connecting points, characterized in that the coils (3), the braids (4), the capacitor (6) and an earth contact (8) are at least partially extrusion coated with plastic (9) and in that recesses are arranged in the plastic (9) in such a manner that the coils (3) are exposed in the region of their turns.
  2. Connector according to Claim 1, characterized in that the connecting points of the electrical components (3, 4, 6, 8) are extrusion coated with plastic (9).
  3. Connector according to Claims 1 and 2, characterized in that the plastic (9) is a polyoxymethylene.
  4. Connector according to Claims 1 to 3, characterized in that the braids (4) are extrusion coated without any prior treatment.
  5. Connector according to Claims 1 to 3, characterized in that before being extrusion coated, the braids (4) are mechanically compressed in the region of the extrusion coating.
  6. Connector according to Claims 1 to 3, characterized in that a sealing element is arranged around the braids (4), in the region of the extrusion coating.
  7. Connector according to Claim 6, characterized in that the sealing element is a shrink sleeve.
  8. Connector according to Claim 1, characterized in that the earth contact (8) is a metal spring.
  9. Connector according to Claims 1 to 8,
    characterized in that the capacitor (6) is completely extrusion coated.
  10. Connector according to Claim 9, characterized in that the capacitor (6) is not sheathed before being extrusion coated.
EP00931095A 1999-05-11 2000-05-02 Connector for a fuel pump of a motor vehicle Expired - Lifetime EP1097302B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19921539 1999-05-11
DE19921539A DE19921539B4 (en) 1999-05-11 1999-05-11 Connector for a fuel pump of a motor vehicle
PCT/EP2000/003919 WO2000068561A1 (en) 1999-05-11 2000-05-02 Connector for a fuel pump of a motor vehicle

Publications (2)

Publication Number Publication Date
EP1097302A1 EP1097302A1 (en) 2001-05-09
EP1097302B1 true EP1097302B1 (en) 2005-03-23

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Application Number Title Priority Date Filing Date
EP00931095A Expired - Lifetime EP1097302B1 (en) 1999-05-11 2000-05-02 Connector for a fuel pump of a motor vehicle

Country Status (11)

Country Link
US (1) US6478613B1 (en)
EP (1) EP1097302B1 (en)
JP (1) JP4636697B2 (en)
KR (1) KR100715061B1 (en)
CN (1) CN1138061C (en)
AT (1) ATE291693T1 (en)
AU (1) AU4915200A (en)
BR (1) BR0006115B1 (en)
DE (2) DE19921539B4 (en)
ES (1) ES2238280T3 (en)
WO (1) WO2000068561A1 (en)

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JP3966407B2 (en) * 2002-09-24 2007-08-29 矢崎総業株式会社 Electromagnetic wave shield structure with oil-proof water
US6890160B2 (en) * 2002-11-05 2005-05-10 Visteon Global Technologies, Inc. Fuel pump having electrically biased shell
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BR0006115B1 (en) 2008-11-18
CN1304478A (en) 2001-07-18
WO2000068561A1 (en) 2000-11-16
KR20010053483A (en) 2001-06-25
DE50009848D1 (en) 2005-04-28
ES2238280T3 (en) 2005-09-01
DE19921539B4 (en) 2004-07-22
ATE291693T1 (en) 2005-04-15
AU4915200A (en) 2000-11-21
US6478613B1 (en) 2002-11-12
BR0006115A (en) 2001-03-27
EP1097302A1 (en) 2001-05-09
JP4636697B2 (en) 2011-02-23
JP2002544425A (en) 2002-12-24
CN1138061C (en) 2004-02-11
DE19921539A1 (en) 2000-11-30

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