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Connection piece for a fuel pump

A technology for connecting parts and fuel pumps, which is applied to engine components, liquid fuel feeders, charging systems, etc., can solve problems such as increasing the manufacturing cost of connecting parts, and achieve the effect of simple integration

Inactive Publication Date: 2008-03-12
CONTINENTAL AUTOMOTIVE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This also increases the manufacturing cost of the connecting parts

Method used

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  • Connection piece for a fuel pump

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Embodiment Construction

[0022] FIG. 1 shows a fuel pump with a pump stage 2 driven by an electric motor 1 in a motor vehicle and a connection part 4 fastened to a housing 3 . On the connection part 4 there is a pipe connection 5 which is used to lead the supply line to the internal combustion engine of the motor vehicle. Furthermore, the connection part 4 has an electrical connection 6 for the electric motor 1 on the fuel pump.

[0023] FIG. 2 shows an enlarged partial view of the connecting part 4 in FIG. 1 , the electrical connection 6 being arranged on a plug 7 . The plug 7 is encapsulated by injection molding with a plastic sheath 8, and the reactor 9 and two brushes 10 used for the commutator of the motor 1 in FIG. 1 protrude from the plastic sheath. The brushes 10 are guided in elongated guide rails of the connecting part 4 and are prestressed by means of a spring element in the direction of the motor 1 shown in FIG. 1 . The plug 7 is fastened by a buckle 11 in a receiving part 12 of the conn...

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Abstract

Disclosed is a fuel pump in which a plug (7) used for mounting electrical contacts (6) is extrusion-coated with a plastic coat and is inserted into a receiving device (12) of a connection piece (4). The plug (7) comprises a circumferential sealing lip (17) which is molded on as a single piece and seals the plug (7) from the connection piece (4). The connection piece (4) thus requires a particularly low number of parts and can be produced in an inexpensive manner.

Description

technical field [0001] The invention relates to a connection part for a fuel pump having a receptacle in which a plug with an electrical connection is arranged, which connects an electric motor of a fuel pump to a power supply network, Wherein the plug is manufactured by plastic injection molding. Background technique [0002] Fuel pumps of motor vehicles currently use such connection elements for joining a common housing of an electric motor and a pump stage and are already known from practical use. For ease of installation, the electrical connector passes through an opening provided in the connecting part, and a sealing ring provided around the electrical connector prevents fuel from spilling. This makes it possible for the delivery pressure generated by the fuel pump to be maintained by the connection part and supplied by the connection of the delivery line. Disadvantages of the known connecting parts are that the sealing ring itself and its installation are too costly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M37/08
CPCF02M37/08F02M2037/082F02M37/00
Inventor T·施密德特
Owner CONTINENTAL AUTOMOTIVE GMBH