EP2193575A2 - Elektrischer steckverbinder als kraftstoffinjektor-kontakt für schüttelfeste anwendungen - Google Patents
Elektrischer steckverbinder als kraftstoffinjektor-kontakt für schüttelfeste anwendungenInfo
- Publication number
- EP2193575A2 EP2193575A2 EP08760943A EP08760943A EP2193575A2 EP 2193575 A2 EP2193575 A2 EP 2193575A2 EP 08760943 A EP08760943 A EP 08760943A EP 08760943 A EP08760943 A EP 08760943A EP 2193575 A2 EP2193575 A2 EP 2193575A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- electrical connector
- inner part
- spring
- connector according
- 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
Links
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
- H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/02—Alloys based on copper with tin as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
-
- 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
-
- 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
- H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
- H01R13/18—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with the spring member surrounding the socket
-
- 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
- H01R13/10—Sockets for co-operation with pins or blades
- H01R13/11—Resilient sockets
- H01R13/111—Resilient sockets co-operating with pins having a circular transverse section
Definitions
- the invention relates to an electrical connector according to the preamble of claim 1.
- a conventional plug-in contact in the automotive sector has become known, for example, from DE 102 48 809 A1.
- the electrical connector in the form of a socket contact which is subject to vibration in order to produce an electrical plug connection in the motor vehicle sector.
- the electrical connector consists of a contact inner part and an over-spring.
- the inner part itself comprises contact blades, which abut with a contact point on the counterpart, preferably a knife.
- the inner contact part has at least three technological contact blades, each of the contact blades has at least one contact point for making an electrical connector with a knife.
- the free ends of the contact blades are based in the manufactured state of an electrical connector on support elements, which are formed as part of the over-spring.
- a plug contact with a 6-finger contact (see DE 10 2005 017 424 A1) is provided in the control module for electrically connecting a control module with a solenoid valve of a magnet assembly provided in a nozzle module into which a pin of the nozzle module is inserted.
- the nickel-plated and gold-plated 6-finger contact is press-fitted into a socket which is provided with a shrink tube and an insulating sleeve for isolation (i.e., avoidance of short circuit).
- the electrically conductive connection is created starting from connecting bolts in the control module via the 6-finger contact, a solid conductor up to the magnet assembly and back.
- the contact allows a reproducible mounting and dismounting of the control module and allows the actuation of the magnetic group in the nozzle module for injection.
- the magnet assembly is fixed in the nozzle module and the socket in the control module.
- the injector By adding a pressure booster in the fuel injector, the injector extends microscopically (about a few ⁇ m), pulling the pin out of the contact area. By injecting the pressure is released and the pin is pushed back into the contact area. Accumulated over the injection cycles and the running time, the plug contact covers a distance of one kilometer.
- the gold surface of the known plug contact is abraded over the term down to the base material and in the base material. The gold surface has the task to protect the base material from oxidation and, due to its hardness, to reduce wear.
- the purpose of the nickel layer is to prevent the diffusion of the less noble base material into the gold surface. If there is no gold surface, the risk increases that an oxide layer forms on the base material and the contact point (contact / solid conductor) becomes high-impedance. This can lead to the magnet assembly no longer being energized and therefore no injection possible. Due to the structural design of the fuel injector relative movement between see solid conductor (pin) and plug contact can not be eliminated.
- the service life is not limited by layer penetration (gold, tin, silver) or fretting corrosion, especially since no microcurrents are applied here.
- German silver is a silver-white shiny alloy of 45-70% copper, 5-30% nickel, 8-45% zinc, possibly with admixtures of trace elements such as lead, tin or iron. It is characterized by special hardness and corrosion resistance because of the nickel content.
- normal forces can be set in the range from 2 to 16 N, that is to say one order of magnitude higher than in the case of the plug contact known from DE 10 2005 017 424 A1.
- Increased insertion forces play no role due to industrial assembly instead of manual assembly with plugs.
- a compact plug contact construction with a small length and a small diameter is also possible, so that e.g. a pin with a diameter of 1 mm can be contacted.
- high contact forces are realized in a small space and thus achieves high electrical reliability.
- the electrical disadvantage (relatively poor conductivity) can be neglected, because usually only very short-term currents below 10 amps, clocked in the range of ⁇ s (to ms) occur, which only means very small RMS currents / equivalent currents of less than 1 ampere. Therefore, the disadvantageous conductivity does not lead to thermal overheating and thermal damage.
- the additional voltage drop in the range of a few mOhm (about 20 mOhm theoretically) is negligible in relation to the voltage drops of the entire system and / or wiring harness, since the length of the contact inner part and the over-spring of the connector according to the invention only a few mm (about 4-9 mm ) is big.
- the connector according to the invention offers the possibility of allowing a wear of ⁇ 0.2 mm per contact area without an oxide layer forming. Since there is no layer, the failure criterion "layer abrasion" is eliminated. By increasing the contact normal force per contact area by a factor of 10, it is possible to reduce the micro-movements and thus reduce the wear. In addition, the quality requirements can be met because with such high normal force extraneous layer thicknesses can be pushed through to keep the electrical contact resistance small and stable.
- the connector according to the invention can also be used under diesel engine conditions, ie in engine oil, engine oil / water and engine oil / diesel / water environments.
- the service life is not limited by the layer penetration (gold, tin, silver) or fretting corrosion.
- d) Contact forces (contact normal force) per contact point are 10 times higher than previously known connectors. As a result, no power interruptions due to low contact forces occur, and wear is reduced by eliminating micromotion.
- f) Use in engine oil environment and unsealed constructions are possible in which the contact area with media such as engine oil, etc., is wetted at temperatures of -40 0 C to 140 0 C.
- FIG. 1 shows an embodiment of the electrical connector according to the invention
- FIG. 2 shows a fuel injector with a nozzle module and a control module which has the plug connector shown in FIG.
- the electrical connector 1 shown in FIG. 1 is configured as a socket contact or circular contact and serves for electrically contacting a pin 2.
- the electrical connector 1 comprises a contact inner part 3 for electrically contacting the pin 2, a surrounding the inner contact part 3 over spring 4 and a metal bushing 5.
- the contact inner part 3 is made of nickel silver, preferably N18 (Wieland trade name), and in the illustrated embodiment as a longitudinally slotted round Sleeve formed, which has a plurality of inwardly directed contact fingers (lamellae) 6 and, for example may be formed by a rolled-sheet metal part made of nickel silver.
- the contact inner part 3 therefore has no surface coating, in particular no gold, silver or tin coating.
- the contact inner part 3 is clamped in the over-spring 4, which is formed of stainless spring steel (e.g., 1.4310 with 1500 MPA strength).
- the over-spring 4 in turn is in the e.g. assembled and clamped therein made of brass metal bushing 5, wherein the clamping force is greater than the insertion force of the pin 2.
- the metal bushing 5 is electrically connected via the over-spring 4 with the contact inner part 3 and in turn attached to the stripped end of an electrical line 7.
- the metal bush 5 is surrounded by an insulating sleeve 8, and the electrical line 7 is covered with a shrink tube 9.
- the sheet thickness or wall thickness Due to the sheet thickness or wall thickness, the length of the contact fingers 6 and the width of the longitudinal slots, the contact pressure and the stiffness of the inner contact part 3 can be adjusted.
- the over-spring 4 By superposition with the over-spring 4, the normal force of the contact fingers 6 can be massively increased and trimmed into the target area in order to compensate for both production tolerances and wear due to wear.
- a round pin made of nickel silver with 1 mm diameter in the opening 10 of the metal bushing 5 and inserted between the contact fingers 6 of the contact inner part 3, against the return action of the over-spring. 4
- FIG. 2 shows a fuel injector 20 with a nozzle module 21 and a control module 22, which has the connector 1 shown in FIG. 1.
- the fuel injection is controlled by means of a solenoid valve (not shown) which is part of a magnet assembly 23 of the nozzle module 21.
- the magnet assembly 23 has a solid conductor 24, which also extends to the control module 22, preferably also made of nickel silver, whose end formed as a pin 2 is plugged into the plug connector 1 in the control module 22.
- the connector 1 offers the possibility of allowing a wear of ⁇ 0.2 mm per contact area without forming an oxide layer. Since there is no oxide layer, the failure criterion layer abrasion is eliminated.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007029968A DE102007029968A1 (de) | 2007-06-28 | 2007-06-28 | Elektrischer Steckverbinder als Kraftstoffinjektor-Kontakt für schüttelfeste Anwendungen |
PCT/EP2008/057403 WO2009000666A2 (de) | 2007-06-28 | 2008-06-12 | Elektrischer steckverbinder als kraftstoffinjektor-kontakt für schüttelfeste anwendungen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2193575A2 true EP2193575A2 (de) | 2010-06-09 |
EP2193575B1 EP2193575B1 (de) | 2011-01-12 |
Family
ID=39971026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08760943A Ceased EP2193575B1 (de) | 2007-06-28 | 2008-06-12 | Elektrischer steckverbinder als kraftstoffinjektor-kontakt für schüttelfeste anwendungen |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100258651A1 (de) |
EP (1) | EP2193575B1 (de) |
JP (1) | JP4956670B2 (de) |
CN (1) | CN101689719B (de) |
DE (2) | DE102007029968A1 (de) |
RU (1) | RU2010102140A (de) |
WO (1) | WO2009000666A2 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7942682B2 (en) | 2009-02-24 | 2011-05-17 | Tyco Electronics Corporation | Electrical connector with slider component for fault condition connection |
US7837519B2 (en) | 2009-02-24 | 2010-11-23 | Tyco Electronics Corporation | Electrical bushing with helper spring to apply force to contact spring |
US7942683B2 (en) | 2009-02-24 | 2011-05-17 | Tyco Electronics Corporation | Electrical bushing with radial interposer spring |
DE102009057944B3 (de) | 2009-12-11 | 2010-12-30 | Harting Electronics Gmbh & Co. Kg | Kontaktbuchse zur Aufnahme eines Kontaktstiftes |
DE102010040335A1 (de) | 2010-09-07 | 2012-03-08 | Robert Bosch Gmbh | Elektrischer Steckverbinder für einen Kraftstoffinjektor |
DE102011088793A1 (de) | 2011-12-16 | 2013-06-20 | Tyco Electronics Amp Gmbh | Elektrischer Steckverbinder mit mikrostrukturiertem Kontaktelement |
EP2713040B1 (de) * | 2012-09-26 | 2017-06-07 | Delphi International Operations Luxembourg S.à r.l. | Elektrischer Steckverbinder |
CN103746205A (zh) * | 2013-12-12 | 2014-04-23 | 四川永贵科技有限公司 | 具有单支点簧片结构的印制板插座 |
CN104901027A (zh) * | 2015-06-12 | 2015-09-09 | 桂林市啄木鸟医疗器械有限公司 | 一种夹紧结构及其弹片 |
GB2555404B (en) * | 2016-10-24 | 2019-04-17 | Delphi Tech Ip Ltd | Positioning feature of a stator assembly of a fuel injector |
CN106450966A (zh) * | 2016-12-05 | 2017-02-22 | 四川永贵科技有限公司 | 带有微动开关联动机构的复合插孔组件 |
DE102017204692A1 (de) * | 2017-03-21 | 2018-09-27 | Robert Bosch Gmbh | Kraftstoffinjektor |
DE202018104958U1 (de) * | 2018-08-30 | 2018-09-12 | Harting Electric Gmbh & Co. Kg | Steckverbinder mit Komponenten aus verbessertem Material |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB796964A (en) * | 1955-12-05 | 1958-06-25 | Gen Electric Co Ltd | Improvements in or relating to electrical socket connectors |
FR85856E (fr) * | 1963-06-24 | 1965-10-29 | Electronique Et D Automatique | Perfectionnements aux connecteurs électriques |
US3924922A (en) * | 1971-04-26 | 1975-12-09 | Herbert A Decenzo | Constrictor biased electrical pin and socket type connector |
JPS6029374A (ja) * | 1983-07-29 | 1985-02-14 | Nissan Motor Co Ltd | ストラットタワ−取付部の結合構造 |
JPS6029374U (ja) * | 1983-08-01 | 1985-02-27 | 株式会社 中立ハトメ | 高周波用同軸コネクタ |
DE3342742C2 (de) * | 1983-11-25 | 1985-10-24 | Otto Dunkel GmbH Fabrik für elektrotechnische Geräte, 8260 Mühldorf | Verfahren zur Herstellung von Kontaktfederbuchsen |
US4662706A (en) * | 1985-04-25 | 1987-05-05 | Elcon Products International Company | Electrical device |
DE3615915A1 (de) * | 1986-05-12 | 1987-11-19 | Dunkel Otto Gmbh | Kontaktelement fuer elektrische steckverbinder |
DE4233951A1 (de) * | 1992-10-08 | 1994-04-14 | Grote & Hartmann | Elektrisches Kontaktelement mit doppelter Überfeder |
DE9419446U1 (de) * | 1994-12-03 | 1996-03-28 | Robert Bosch Gmbh, 70469 Stuttgart | Steckverbindungsbuchse |
JP3424796B2 (ja) * | 1997-08-11 | 2003-07-07 | 矢崎総業株式会社 | 大電流充電用端子 |
DE19828984A1 (de) | 1998-06-29 | 1999-12-30 | Whitaker Corp | Zweiteiliger elektrischer Buchsenkontakt |
US6089929A (en) * | 1998-08-18 | 2000-07-18 | Tvm Group, Inc. | High amperage electrical power connector |
US6102746A (en) * | 1999-04-30 | 2000-08-15 | Hypertronics Corporation | Coaxial electrical connector with resilient conductive wires |
JP2001307809A (ja) * | 2000-04-18 | 2001-11-02 | Ryosei Electro-Circuit Systems Ltd | 接続端子 |
DE10224683A1 (de) | 2002-06-04 | 2003-12-18 | Bosch Gmbh Robert | Geschweißter Meanderkontakt |
DE20208635U1 (de) * | 2002-06-04 | 2003-10-16 | Bosch Gmbh Robert | Kontaktelement für eine elektrische Steckverbindung |
DE10248809A1 (de) * | 2002-10-19 | 2004-04-29 | Robert Bosch Gmbh | Elektrischer Steckverbinder in der Ausgestaltung eines Buchsenkontakts mit spezieller Lamellengestaltung |
EP1445471B1 (de) * | 2003-01-24 | 2006-05-17 | Siemens VDO Automotive S.p.A. | Elektrischer Anschlussadapter und Dosiergerät mit einem solchen Anschluss |
US6939178B2 (en) * | 2003-12-31 | 2005-09-06 | Amphenol Corporation | Fuel injector connector |
TWI234317B (en) * | 2004-06-10 | 2005-06-11 | Delta Electronics Inc | Power connector |
DE102005017424B4 (de) | 2005-04-15 | 2015-10-15 | Robert Bosch Gmbh | Weiterführung des elektrischen Stromes in Kraftstoffinjektoren |
-
2007
- 2007-06-28 DE DE102007029968A patent/DE102007029968A1/de not_active Withdrawn
-
2008
- 2008-06-12 JP JP2010513842A patent/JP4956670B2/ja not_active Expired - Fee Related
- 2008-06-12 EP EP08760943A patent/EP2193575B1/de not_active Ceased
- 2008-06-12 DE DE502008002338T patent/DE502008002338D1/de active Active
- 2008-06-12 RU RU2010102140/07A patent/RU2010102140A/ru not_active Application Discontinuation
- 2008-06-12 CN CN200880022365.7A patent/CN101689719B/zh not_active Expired - Fee Related
- 2008-06-12 WO PCT/EP2008/057403 patent/WO2009000666A2/de active Application Filing
- 2008-06-12 US US12/666,390 patent/US20100258651A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2009000666A2 * |
Also Published As
Publication number | Publication date |
---|---|
JP4956670B2 (ja) | 2012-06-20 |
US20100258651A1 (en) | 2010-10-14 |
RU2010102140A (ru) | 2011-08-10 |
DE102007029968A1 (de) | 2009-01-08 |
EP2193575B1 (de) | 2011-01-12 |
JP2010531530A (ja) | 2010-09-24 |
WO2009000666A2 (de) | 2008-12-31 |
CN101689719B (zh) | 2014-03-05 |
WO2009000666A3 (de) | 2009-02-19 |
DE502008002338D1 (de) | 2011-02-24 |
CN101689719A (zh) | 2010-03-31 |
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