EP3100322A1 - Verfahren zur herstellung eines kontaktelementes - Google Patents
Verfahren zur herstellung eines kontaktelementesInfo
- Publication number
- EP3100322A1 EP3100322A1 EP15707286.9A EP15707286A EP3100322A1 EP 3100322 A1 EP3100322 A1 EP 3100322A1 EP 15707286 A EP15707286 A EP 15707286A EP 3100322 A1 EP3100322 A1 EP 3100322A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- carrier element
- electrical connector
- electrically conductive
- contact element
- 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
-
- 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
- H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
Definitions
- the invention relates to a method for producing a contact element of an electrical connector. Moreover, the invention relates to an electrical connector with such a contact element.
- contact elements In order to meet the requirements for electrical and mechanical function of contact elements in electrical connectors, contact elements are predominantly used, which have a very conductive mass, so that eddy currents are often the result.
- Various methods for producing contact elements of electrical connectors are known from the prior art.
- the contact element In the known connectors, the contact element is usually made as a rotating part of a material which is suitable on the one hand for machining and on the other hand electrically conductive.
- the disadvantage here is that a material suitable for machining usually has a lower conductivity than, for example, the conductive material of the conductor to be connected (eg copper). This requires larger cable and contact cross sections in order to prevent the quality-reducing damping of power pulses. Furthermore occurs in such a trained contact elements on a pronounced skin effect.
- the current density inside a conductor is lower than in outer areas.
- the skin effect increases as the frequency of the transmitted signals increases the resistance of the electrical line.
- Also detrimental to the quality of the signal transmission may be eddy currents, which in the contact elements of connectors through the transmitted Signals are induced because the eddy currents interfere with the signal currents.
- it is known to use high conductivity materials such as copper and silver. Due to the good conductivity of these materials, the material volume of the contact elements can be significantly reduced. Eddy currents occur correspondingly reduced.
- Contact elements made of silver are usually used in connectors with a composite structure of metal and plastic, wherein the contact elements are produced as stamped / bent parts, which are embedded in the plastic material of a main body of the connector (eg by encapsulation in an injection molding). It is also advantageous that coupling and line capacitances can be reduced due to the greatly reduced mass of the electrically conductive material (see, for example, DE 10 2008 007 866 A1).
- the electrical connector should be inexpensive and easy to manufacture.
- at least the frequency-dependent skin effect should be eliminated as much as possible and the formation of eddy current can be avoided.
- the method according to the invention makes it possible to produce contact elements which, compared to the prior art, have a greatly reduced mass of the electrically conductive material. As a result, they have an excellent eddy current behavior, whereby the quality of the signal transmission can be improved.
- the electrically conductive coating has only a very small cross-section, the frequency-dependent (non-linear) skin effect can be almost completely excluded.
- the invention is based on the concept of using a crystalline conductor.
- the coating is formed as a two-dimensional crystalline layer. It is generally known that crystals are distinguished by their regular atomic arrangement in all three spatial directions.
- the preferred conductors according to the invention preferably have only one regular or repetitive arrangement of the atoms in two spatial directions.
- the physical properties of two-dimensional crystalline layers differ significantly from the amorphous form of the same material.
- PVD Gas phase deposition
- the carrier element is excluded from the signal line.
- the carrier element may consist of a plastic material, wherein the carrier element is preferably produced by injection molding from a suitable thermoplastic polymer material of a known type. By injection molding directly usable moldings can be produced inexpensively in large quantities. It is also conceivable that the carrier element consists of a ceramic material.
- the carrier element may consist of a metallic material which is anodized.
- anodizing the metallic carrier body which itself is initially suitable as a signal conductor, electrically insulated and thus excluded from the signal line. Is preferred by the Anodizing produces an electrically insulating ceramic layer on the surface of the carrier element. Ceramic materials are well known in electronics and electrical engineering. Due to their high mechanical strength and very low electrical conductivity, they are particularly suitable as insulators. For the production of the ceramic layer according to the invention, all known methods are suitable.
- the support element made of aluminum or an aluminum alloy.
- Such trained support elements can be produced with tools that are already used for the production of contact elements in use. This can save costs. A cost-effective production of the connector according to the invention is thus possible.
- Aluminum is suitable for anodization by the anodizing process.
- the carrier element may consist of titanium or a titanium alloy.
- the signal conductor has a very high strength with a low overall weight. This makes it possible to realize a particularly robust connector whose contact elements are resistant to bending.
- support elements made of titanium can be produced with tools that are already used for the production of contact elements in use.
- the layer of electrically conductive material is carbon.
- the coating consists of graphite. Graphite has along its crystal layer a particularly high strength and a very good electrical conductivity. Due to the good electrical conductivity, the conductive mass can be kept low. Eddy currents are avoided.
- graphene is used to coat the support member.
- Graphene surface crystals are particularly stiff and strong and also have a very good electrical conductivity.
- Graphene layers if necessary as monatomic or only a few atomic layers comprising layers can be made extremely thin, so that the skin effect is eliminated when the graphene layer according to the invention, the sole electric Signal conductor forms.
- the graphene coating can be made by epitaxial growth on the material of the anodized support element by means of vapor deposition.
- the carbon layer is produced by plasma coating the carrier element.
- the plasma coating offers the advantage that good adhesion to the substrate can be achieved in this way. Furthermore, a high uniformity of the layer thickness and structure is effected and the surface and layer properties can be adjusted selectively within wide limits. Especially the uniformity of the layer thickness plays a decisive role with regard to a skin effect, which according to the invention should be minimized or avoided altogether. Rough surfaces have an unfavorable effect on the electrical resistance (contact and line resistance). Furthermore, layers produced in this way are hole-free at a small thickness. Also, the plasma coating is environmentally advantageous, because it is a solvent-free and dry process, with only a small consumption of chemicals.
- the carrier element is coated with titanium nitride.
- the titanium nitride layer also ensures high strength of the connector due to its hardness, making the connector particularly resistant to bending.
- Another advantage of the titanium nitride layer is its high scratch resistance. This prevents that by use or during use of the connector recesses in the otherwise flat surface arise, which would adversely affect the electrical resistance (contact and line resistance) and would lead to a deterioration of the eddy current behavior. A durable and high-quality connector is thus created.
- common coating methods such as the gas phase deposition method (CVD / PVD) or the plasma coating can be used.
- an extremely thin and uniform titanium nitride layer can thus be produced, so that the skin effect is eliminated.
- an electrically conductive protective coating is applied to the coating.
- the protective coating protects the underlying layers from mechanical and chemical influences, such as abrasion and / or oxygen.
- the protective coating contains an electrically conductive material.
- the protective layer may be made of gold or another electrically sufficiently conductive material, for example.
- Titanium nitride is particularly suitable as a protective coating.
- the ceramic material is a hard material and a good electrical conductor.
- titanium nitride has good sliding properties, which is advantageous when plugging in electrical connectors.
- the use of titanium nitride also results in a pleasing external appearance of the connector since a smooth titanium nitride layer is high gloss black or gold or exhibits interference color effects.
- the contact element according to the invention can also be at least partially encapsulated or encapsulated by a main body of the connector.
- the base body consists of a plastic.
- contact elements produced according to the invention can be integrated into already known connector types. A complete conversion of existing manufacturing processes is therefore not necessary. This saves costs.
- the present invention further relates to an electrical connector having a contact element made as described above.
- the electrical connector with contact element according to the invention is characterized in that the contact element has an electrically insulating carrier element which is coated with an electrically conductive material, wherein the coating forms the sole electrical signal conductor.
- the connectors according to the invention are preferably designed such that no tools are necessary to insert the plug connector or the contact element into a corresponding socket or the like or to remove it from it again. Due to the greatly reduced mass of the electrically conductive material compared to the prior art, such a connector has the advantage that it has an outstanding eddy current behavior, whereby the quality of the signal transmission can be improved. Since the conductive elements of the connector according to the invention have only a very small cross-section, according to the invention, the frequency-dependent (non-linear) skin effect can be almost completely excluded.
- the carrier element may consist of a plastic material and is preferably designed as an injection molded part. By injection molding directly usable moldings can be produced inexpensively in large quantities. It is also conceivable that the carrier element is designed as a stamped / bent part.
- the carrier element may preferably be produced from metallic flat material which is anodized. By bending technical deformation, it receives the required shape for the function. By such trained support elements material and thus costs are saved.
- the contact element may be at least partially embedded in a base body made of electrically insulating material.
- the main body forms the supporting structure of the connector.
- the main body is preferably made of a plastic material. In order to ensure a positive and firm connection between the contact element and the base body, the contact element may have recesses into which the insulating body engages.
- the contact element can be embedded with advantage by encapsulation in the material of the base body.
- the contact element is embedded in the base body by injection molding.
- Such a trained connector is optimized both in terms of its electrical properties in the signal transmission and in terms of manufacturing costs.
- the connector according to the invention may be, for example, a banana plug, a cinch plug, an XLR plug, an HDMI plug, a pole terminal or a cable lug.
- Figure 1 is a schematic side view of an electrical connector according to the invention.
- Fig. 2 is a schematic sectional view of a contact element according to the invention.
- FIG. 1 shows a schematic side view of an electrical connector according to the invention.
- the electrical connector 1 is designed as an angle banana plug and comprises a main body 2 and a protruding at the front of the main body 2, substantially cylindrical contact element 3.
- the contact element 3 is partially embedded in the existing plastic base 2.
- the contact element 3 has at least one carrier element 4, which is coated with an electrically conductive layer, which preferably consists of graphene, wherein the coating forms the sole electrical signal conductor.
- the carrier element 4 is produced from a metallic flat material which, by means of bending-technical deformation, acquires the shape required for the function, as shown in FIG. 1.
- the support member 4 is a stamped / bent part made of aluminum, which is anodized in an anodizing process and then coated with graphene.
- the carrier element 4 may also be a plastic body. It is essential that the carrier element 4 is not electrically conductive, ie either consists of electrically insulating material or is coated therewith. It thus does not participate in the electrical signal transmission and acts as it were only as a dummy core.
- FIG. 2 shows a schematic sectional illustration of the contact element 3.
- the carrier element 4 consists of a metallic material and is surrounded by a ceramic layer 5 produced by anodization. Through the ceramic layer 5, the support element 4 is electrically isolated.
- the ceramic layer 5 is coated by an electrically conductive layer 6, which is preferably a carbon layer, which according to the invention forms the sole signal conductor.
- the coating 6 has the smallest possible layer thickness.
- the contact element 3 has, as an outer layer, a protective coating 7 made of titanium nitride.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014000910 | 2014-01-28 | ||
| DE102014005339.3A DE102014005339B4 (de) | 2014-01-28 | 2014-04-11 | Verfahren zur Herstellung eines Kontaktelements |
| PCT/EP2015/051578 WO2015113959A1 (de) | 2014-01-28 | 2015-01-27 | Verfahren zur herstellung eines kontaktelementes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3100322A1 true EP3100322A1 (de) | 2016-12-07 |
| EP3100322B1 EP3100322B1 (de) | 2022-08-03 |
Family
ID=53522742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15707286.9A Active EP3100322B1 (de) | 2014-01-28 | 2015-01-27 | Verfahren zur herstellung eines elektrischen steckverbinders |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US10965048B2 (de) |
| EP (1) | EP3100322B1 (de) |
| CN (1) | CN106104934B (de) |
| DE (1) | DE102014005339B4 (de) |
| WO (1) | WO2015113959A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015220688A1 (de) * | 2015-10-22 | 2017-04-27 | Zf Friedrichshafen Ag | Elektrischer Stecker und Verfahren zum Herstellen |
| TWI573325B (zh) * | 2015-11-26 | 2017-03-01 | 陳卿富 | 訊號插頭(二) |
| US10505312B2 (en) * | 2018-02-07 | 2019-12-10 | Smiths Interconnect Americas, Inc. | Hot mate contact system |
| JP7299127B2 (ja) * | 2019-10-02 | 2023-06-27 | 矢崎総業株式会社 | 端子、並びにこれを用いた端子付き電線、及び電気接続部材 |
| JP7364481B2 (ja) * | 2020-01-27 | 2023-10-18 | 矢崎総業株式会社 | コネクタ及びコネクタ対 |
| CN115631930A (zh) * | 2022-10-26 | 2023-01-20 | 北京泰科斯德技术有限公司 | 用于电源的磁性器件及开关电源 |
| GB2640894A (en) * | 2024-05-08 | 2025-11-12 | Harting Int Innovation Ag | Electrical contact element and electrical connector comprising an electrical contact element |
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| US2022314A (en) * | 1933-12-29 | 1935-11-26 | Globar Corp | Electrical resistor and its manufacture |
| FR957425A (de) * | 1943-02-25 | 1950-02-20 | ||
| DE3751260T2 (de) | 1987-04-23 | 1995-10-12 | Sumitomo Electric Industries | Mit keramik beschichtete verbindungseinheit. |
| US5264788A (en) * | 1992-06-12 | 1993-11-23 | Cascade Microtech, Inc. | Adjustable strap implemented return line for a probe station |
| US5703324A (en) * | 1996-04-30 | 1997-12-30 | Fluke Corporation | Shielded banana plug with double shroud and input receptacle |
| US6007390A (en) | 1998-06-30 | 1999-12-28 | General Motors Corporation | Low friction metal-ceramic composite coatings for electrical contacts |
| US6981895B2 (en) * | 1999-08-23 | 2006-01-03 | Patrick Potega | Interface apparatus for selectively connecting electrical devices |
| SE0003341D0 (sv) * | 2000-09-18 | 2000-09-18 | St Jude Medical | A coating method |
| DE10162276C5 (de) * | 2001-12-19 | 2019-03-14 | Watlow Electric Manufacturing Co. | Rohrförmiger Durchlauferhitzer und Heizplatte sowie Verfahren zu deren Herstellung |
| DE10245343A1 (de) * | 2002-09-27 | 2004-04-08 | Robert Bosch Gmbh | Elektrischer Kontakt |
| JP2004265729A (ja) * | 2003-02-28 | 2004-09-24 | Jst Mfg Co Ltd | 異方導電シート |
| DE10346206A1 (de) | 2003-10-06 | 2005-04-28 | Bosch Gmbh Robert | Kontaktoberflächen für elektrische Kontakte |
| US7390963B2 (en) * | 2006-06-08 | 2008-06-24 | 3M Innovative Properties Company | Metal/ceramic composite conductor and cable including same |
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| KR100839893B1 (ko) * | 2008-03-07 | 2008-06-19 | 조인셋 주식회사 | 솔더링 가능한 탄성 전기접촉단자 |
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| KR20130018276A (ko) * | 2010-03-31 | 2013-02-20 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 디스플레이용 전자 물품 및 그 제조 방법 |
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| DE102011078546A1 (de) * | 2011-07-01 | 2013-01-03 | Tyco Electronics Amp Gmbh | Elektrische Kontaktbeschichtung |
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-
2014
- 2014-04-11 DE DE102014005339.3A patent/DE102014005339B4/de active Active
-
2015
- 2015-01-27 WO PCT/EP2015/051578 patent/WO2015113959A1/de not_active Ceased
- 2015-01-27 EP EP15707286.9A patent/EP3100322B1/de active Active
- 2015-01-27 US US15/114,960 patent/US10965048B2/en not_active Expired - Fee Related
- 2015-01-27 CN CN201580010113.2A patent/CN106104934B/zh not_active Expired - Fee Related
-
2020
- 2020-11-13 US US17/097,391 patent/US20210083414A1/en not_active Abandoned
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| Title |
|---|
| None * |
| See also references of WO2015113959A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US10965048B2 (en) | 2021-03-30 |
| CN106104934B (zh) | 2020-10-23 |
| US20160344125A1 (en) | 2016-11-24 |
| WO2015113959A1 (de) | 2015-08-06 |
| DE102014005339B4 (de) | 2022-06-09 |
| EP3100322B1 (de) | 2022-08-03 |
| CN106104934A (zh) | 2016-11-09 |
| DE102014005339A1 (de) | 2015-07-30 |
| US20210083414A1 (en) | 2021-03-18 |
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