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EP1628371B1 - Dispositif de connection électrique - Google Patents

Dispositif de connection électrique Download PDF

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Publication number
EP1628371B1
EP1628371B1 EP04106076A EP04106076A EP1628371B1 EP 1628371 B1 EP1628371 B1 EP 1628371B1 EP 04106076 A EP04106076 A EP 04106076A EP 04106076 A EP04106076 A EP 04106076A EP 1628371 B1 EP1628371 B1 EP 1628371B1
Authority
EP
European Patent Office
Prior art keywords
contact
connecting device
pins
housing
locating
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.)
Ceased
Application number
EP04106076A
Other languages
German (de)
English (en)
Other versions
EP1628371A1 (fr
Inventor
Emanuel Sanftleben
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.)
Continental Automotive GmbH
Original Assignee
Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Priority to US11/014,924 priority Critical patent/US6994559B1/en
Publication of EP1628371A1 publication Critical patent/EP1628371A1/fr
Application granted granted Critical
Publication of EP1628371B1 publication Critical patent/EP1628371B1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • H01R13/6315—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only allowing relative movement between coupling parts, e.g. floating connection
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators

Definitions

  • the present invention relates to a device for the electrical connection of contact pins with pins of a device formed by the connector. Furthermore, the invention relates to a use for such a connection device.
  • connection device in the form of a plugged onto two contact pins of a piezoelectric actuator contact plate.
  • the known contact plate is made of insulating plastic and provided with passage openings for the passage of almost parallel to the longitudinal direction of the actuator projecting pins.
  • electrical leads are respectively led to connection pins which protrude laterally out of the contact plate.
  • a plug housing is formed in which the laterally projecting pins protrude into a connection chamber, so that at this point a connector is formed by means of which the piezoelectric actuator with a external line arrangement is connectable.
  • connection device in the form of a contact tongue carrier.
  • the known contact tongue carrier serves for sealing and positioning of contact pins of a piezoelectric actuator for the injection valve of an internal combustion engine and has a device body made of plastic with passage openings for the passage of the contact pins. After placing the contact tongue carrier on the contact pins of the piezoelectric actuator, the contact pin ends protruding from the passage openings come into contact with welding lugs formed in the plastic body and can be welded to the same.
  • the welding straps are electrically connected to laterally projecting contact tongues, which serve as connecting pins of a connector formed by a plastic extrusion.
  • connection devices The preparation of an electrical connection by means of the known connection devices is problematic insofar as these devices often are not in a precisely defined position after assembly and thus often have to be additionally adjusted manually. Without such an adjustment of the position and orientation of the connecting device, the electrical contacting of the contact pins is difficult. In addition, for a subsequent encapsulation of the connecting device in the case of insufficient positional accuracy there is the risk that encapsulation material undesirably passes through gaps which would be substantially smaller and thus sealing at a precisely defined position of the connecting device.
  • a connection device for electrically connecting contact pins projecting from an axial opening of a sleeve-like housing with connection pins of a connector formed by the device, comprising a device body having an insertion section adapted to be axially engaged in the opening and is provided with passage openings for the passage of the contact pins, and with a respect to the insertion laterally offset and substantially tangentially spaced from the insertion portion extending contact surface, which cooperates upon insertion of the insertion in the opening with a corresponding bearing surface of the housing to prevent rotation, wherein the Peripheral region of the insertion is formed by a plurality of circumferentially spaced from each other and radially elastically resilient centering pin is formed.
  • the device body has an insertion section for axial engagement in an axial opening of a housing. This advantageously already brings about a certain "coarse adjustment" of the position of the connecting device during its assembly and allows the provision of comparatively narrow gaps between the connecting device and the housing in a simple manner.
  • An anti-rotation and possibly also an improved positioning of the connecting device with respect to the housing is provided by a substantially tangential at a distance from the insertion portion extending contact surface of the device body, which cooperates with a corresponding contact surface of the housing.
  • the peripheral portion of the insertion is formed by a plurality of circumferentially spaced from each other and radially elastically resilient centering, and optionally, that the contact surface of the connecting device with respect the spacing of the contact surface of the connecting device from the insertion section is formed tangentially opposite contact surface areas each with a plastically deformable bearing surface projection.
  • the device body comprises a plastic molded part which integrally forms both the insertion section and the abutment surface.
  • this measure has z. B. has the advantage that the contact surface used for the position definition has a particularly accurate position with respect to the insertion section.
  • the abutment surface is preferably such designed such that their interaction with the corresponding contact surface of the housing takes place substantially only at the tangentially opposite contact surface areas.
  • the advantageous effect of the deformable projections is used optimally.
  • peripheral portion of the insertion portion is formed by the above-mentioned plurality of centering pins, so these centering pin z. B. identically formed and viewed in the circumferential direction can be arranged equidistantly. This is z. B. achieved a particularly accurate centering of the insertion in the housing opening. In order to ensure easy insertion of the insertion, it is advantageous if the centering pins are each provided with an insertion bevel.
  • the device body comprises a plastic molded part (for example, the above-mentioned, both the insertion and the contact surface forming part), wherein the terminal pins, contact parts for contacting the contact pins and an electrical line arrangement between the terminal pins and the contact parts molded are.
  • a plastic molded part for example, the above-mentioned, both the insertion and the contact surface forming part
  • the terminal pins, contact parts for contacting the contact pins and an electrical line arrangement between the terminal pins and the contact parts molded are.
  • contact parts for contacting the contact pins are designed as welding straps which are to be welded to the contact pins.
  • Such welding tabs are preferably arranged adjacent to the passage openings such that they rest against the contact pins and thus can be welded particularly easily.
  • a preferred use of the connecting device is the electrical contacting of contact pins of a piezoelectric actuator of a fuel injector of an internal combustion engine.
  • the fuel injector may be z. B. act to a diesel injector of a storage injection system.
  • FIG. 1 and 2 show a contact tongue carrier (connecting device) generally designated 10 for the electrical connection of contact pins of a piezoelectric actuator (not shown) with contact tongues 12 (terminal pins), which are formed in a plastic body 14 and together with a (not shown) plastic extrusion forming a connector of a fuel injector ,
  • the body 14 is in the example shown an integrally manufactured plastic molding and has an insertion portion 16 of a total cylindrical contour which is adapted for axial engagement in an axial opening of a sleeve-like housing of the fuel injector and is provided with passages 18 for the passage of the contact pins of the piezoelectric actuator and a relative to the insertion portion 16 laterally offset and substantially tangentially spaced from the insertion portion 16 extending contact surface 22.
  • the contact surface 22 acts in the manner described below after assembly of the contact tongue carrier 10, wherein the insertion portion 16 axially into the opening of the Injector housing is introduced, together with a corresponding contact surface of this injector rotatably together.
  • the contact surface 22 of the contact tongue carrier 10 has two with respect to the insertion portion 16 tangentially opposite contact surface areas, in each of which protrudes one of two plastically deformable contact surface projections 24 out of the plane of the contact surface 22 out.
  • these plastically deformable projections 24 are integrally formed on the plastic body 14.
  • the projections 24 can be plastically deformed by the housing provided on the corresponding contact surface, so that at the end of the insertion process, the two corresponding contact surfaces in the region of the projections 24 rest against each other without play.
  • the projection 24 could also be formed as part separately attached to the contact surface 22 (instead of being integrally formed). This variant would be particularly advantageous if the material used for the plastic body 14 is unfavorable for a plastic deformability.
  • the projections 24 are as in Fig. 2 formed rib-shaped and each have a extending away from the contact surface 22 rib foothills, which connects via an insertion or insertion 30 to the effective in the interaction of the contact surfaces rib section.
  • protrusion 24 from a material specially selected with regard to plastic deformability in a two-component injection molding process together with the formation of the remaining plastic body 14.
  • the peripheral region of the insertion section 16 is formed by two diametrically opposed and radially elastically resilient centering pins 20.
  • the free ends of the centering pins 20 can also be provided with insertion bevels.
  • centering pin 20 of the insertion section 16 has two sleeves 26, which are formed in the example shown as the centering pins 20 integral with the remaining plastic body 14 and the leadership and isolation of the contact pins to be contacted in the region of the insertion section 16.
  • the contact tongues 12 which lead via an integrally formed electrical line arrangement (in the interior of the plastic body 14) to welding tabs 34, formed in the plastic material used to form the plastic body 14.
  • the contact pins of the piezoelectric actuator pass through the passage openings 18 and abut with their ends against the welding lugs 34 arranged adjacent to these passage openings 18, so that the contact pins are welded to the welding lugs 34 in a simple manner for producing an electrical contact can be.
  • Fig. 3 shows the generally designated 50 injector housing in its upper (injection nozzle remote) area prior to assembly of the contact tongue carrier 10 described above.
  • the injector housing 50 has a high pressure fuel supply port 52 and a fuel leakage port 54 for supplying fuel to a hydraulic fuel servo valve disposed in the lower portion of the housing 50 (not shown) in a manner known per se and thus not required explanation.
  • the control of the servo valve by means of the likewise arranged in the lower region of the housing 50 and connected via an operative connection with an actuator of the servo valve piezoelectric actuator.
  • Fig. 3 can be further seen the axial opening 56 of the overall sleeve-like housing 50, from which protrude after insertion of a piezoelectric actuator containing the piezoelectric assembly (from below), the contact pins 62 of the piezoelectric actuator upwards.
  • the above with respect to the Fig. 1 and 2 described contact tongue carrier 10 is placed from above on a provided with a shoulder 64 support surface 66 of the housing 50 so that the contact pins 62 of the piezoelectric actuator pass through the openings 18 of the insertion section 16 and then welded to the welding brackets 34.
  • the housing 50 has a tangentially extending contact surface 58, which cooperates with the above-described contact surface 22 of the contact tongue carrier 10.
  • the housing 50 may be provided with an abutment surface 58 adjacent to the inclined surface.
  • Fig. 4 shows the situation immediately after placing the contact tongue carrier 10 on the Injektorgepuruse 50.
  • the contact pins of the piezoelectric actuator are in this situation on the welding tabs 34 and are welded to the same.
  • a plastic sheath (not shown) is formed by a plastic extrusion on the illustrated end of the injector 50, which also provides a connector housing for the formed by means of the contact tongues 12 connector.
  • the stop between the contact tongue carrier 10 and the apparent in this figure paragraph 64 in the injector 50 ensures rotation, whose stability and accuracy by the provision of plastically deformable projections 24 and the radially einfederbaren centering pin 20 is considerably increased.
  • the interaction of the contact surfaces 22 and 58 takes place substantially only on opposite contact surface areas, wherein the realized by means of the plastically deformed projections 24 fixation the contact tongue carrier 10 and thus its insertion section 16 already before the welding (and also before the plastic extrusion) reliably and accurately positioned.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (11)

  1. Dispositif de connexion (10) destiné à connecter électriquement des broches de contact (62) qui dépassent d'un orifice axial (56) d'un boîtier en forme de douille (50) à des broches de raccordement (12) d'un connecteur formé par le dispositif (10), comprenant un corps de dispositif (14) avec une section d'introduction (16) qui est adéquatement configurée pour venir en prise axiale dans l'orifice (56) et qui est dotée d'orifices de passage (18) permettant le passage des broches de contact (62), et avec une surface d'appui (22), disposée avec un décalage latéral par rapport à la section d'introduction (16) et s'étendant sensiblement tangentiellement à une distance de la section d'introduction (16), qui lors de l'introduction de la section d'introduction (16) dans l'orifice (56) coopère avec une surface d'appui (58) correspondante du boîtier (50) pour empêcher la rotation,
    dans lequel la circonférence de la section d'introduction (16) est formée par une pluralité de pions de centrage (20) espacés les uns des autres dans le sens de la circonférence et déformables élastiquement dans le sens radial.
  2. Dispositif de connexion (10) selon la revendication 1, dans lequel la surface d'appui (22) du dispositif de connexion (10) est formée avec une saillie de surface d'appui déformable plastiquement (24) sur des parties de surface d'appui respectives tangentiellement opposées par rapport à la distance entre la surface d'appui (22) du dispositif de connexion (10) et la section d'introduction (16).
  3. Dispositif de connexion (10) selon la revendication 2, dans lequel la surface d'appui (22) est configurée de telle façon que la coopération n'a lieu pratiquement que sur les parties de surfaces d'appui opposées.
  4. Dispositif de connexion (10) selon la revendication 1, dans lequel les pions de centrage (20) sont identiques et équidistants vus dans la direction de la circonférence
  5. Dispositif de connexion (10) selon la revendication 1 ou la revendication 4, dans lequel les pions de centrage (20) sont munis chacun d'un chanfrein d'introduction.
  6. Dispositif de connexion (10) selon l'une des revendications précédentes, dans lequel le corps de dispositif (14) comprend une pièce moulée en matière plastique qui forme d'un seul tenant la section d'introduction (16) de même que la surface d'appui (22).
  7. Dispositif de connexion (10) selon l'une des revendications précédentes, dans lequel le corps de dispositif (14) comprend une pièce moulée en matière plastique dans laquelle sont formées les broches de raccordement (12), des éléments de contact (34) servant à relier électriquement les broches de contact (62), ainsi qu'un agencement de circuit électrique entre les broches de raccordement et les éléments de contact.
  8. Dispositif de connexion (10) selon l'une des revendications précédentes, dans lequel des pattes à souder (34) sont disposées adjacentes aux orifices de passage (18) de façon à pouvoir souder lesdites pattes aux broches de contact (62).
  9. Injecteur de carburant pour un moteur à combustion interne, comprenant un actionneur piézoélectrique, monté dans un boîtier d'actionneur (50), dont les broches de contact (62) sont reliées électriquement au moyen d'un dispositif de connexion (10) selon l'une des revendications 1 à 8.
  10. Injecteur de carburant selon la revendication 9, comprenant un surmoulage en matière plastique enveloppant l'extrémité côté connecteur de l'injecteur de carburant.
  11. Utilisation d'un dispositif de connexion (10) selon l'une des revendications 1 à 8 pour relier électriquement des broches de contact (62) d'un actionneur piézoélectrique d'un injecteur de carburant d'un moteur à combustion interne.
EP04106076A 2004-08-20 2004-11-25 Dispositif de connection électrique Ceased EP1628371B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/014,924 US6994559B1 (en) 2004-08-20 2004-12-17 Device for the electrical connection of contact pins to connecting pins of a plug-in connector formed from the device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004040489 2004-08-20

Publications (2)

Publication Number Publication Date
EP1628371A1 EP1628371A1 (fr) 2006-02-22
EP1628371B1 true EP1628371B1 (fr) 2012-11-14

Family

ID=34929938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04106076A Ceased EP1628371B1 (fr) 2004-08-20 2004-11-25 Dispositif de connection électrique

Country Status (1)

Country Link
EP (1) EP1628371B1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19715487C2 (de) * 1997-04-14 2002-06-13 Siemens Ag Piezoelektrischer Aktor mit einem Hohlprofil
DE19844743C1 (de) * 1998-09-29 2000-06-08 Siemens Ag Kontaktzungenträger zur Abdichtung und Positionierung von Kontaktstiften
DE10250202A1 (de) * 2002-10-28 2004-05-13 Siemens Ag Aktor mit einer Durchführungsöffnung, die bei der Umspritzung gegen eindringenden Kunststoff abgedichtet ist
DE10251225B4 (de) * 2002-11-04 2010-04-08 Continental Automotive Gmbh Piezoaktorkontaktierung für Einspritzventil

Also Published As

Publication number Publication date
EP1628371A1 (fr) 2006-02-22

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