EP4200940A1 - Gratfrei herstellbares kontaktelement - Google Patents
Gratfrei herstellbares kontaktelementInfo
- Publication number
- EP4200940A1 EP4200940A1 EP21772969.8A EP21772969A EP4200940A1 EP 4200940 A1 EP4200940 A1 EP 4200940A1 EP 21772969 A EP21772969 A EP 21772969A EP 4200940 A1 EP4200940 A1 EP 4200940A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact element
- area
- electrical contact
- element according
- groove
- 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.)
- Pending
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
- H01R13/04—Pins or blades for co-operation with 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
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
-
- 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
- C22C9/04—Alloys based on copper with zinc as the next major constituent
-
- 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
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
- H01R11/05—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations having different types of direct connections
-
- 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 is based on an electrical contact element according to the generic type of independent claim 1 .
- Contact elements are contacted with a suitable mating contact element for the transmission of electrical currents or electrical power.
- the contact elements are used in connectors, for example, but can also be installed on so-called busbars.
- Such connectors and mating connectors are used to create an electrical and mechanical connection between two electrical lines or an electrical line and a device, particularly in an industrial environment.
- WO 2020/043231 A1 shows a connector consisting of a connector housing and at least one electrical contact element, the connector housing and/or the electrical contact element having a lead content of ⁇ 0.1 percent by weight.
- WO 2020/043231 A1 also discloses a manufacturing method for so-called lead-free contact elements.
- a rotary indexing machine is used, which has a number of work stations which, in particular, carry out cutting work steps on a workpiece.
- a material with a lead content of less than or equal to 0.1 percent by weight is referred to as lead-free material.
- the contact elements mentioned above are made of lead-free material and thus correspond to the prevailing environmental awareness. In the Production of such contact elements are used in particular cutting work steps.
- Typical machining processes include drilling, milling, turning and sawing.
- the superfluous material produced during processing is removed in the form of chips. Chips or non-acidic material that is still attached to the workpiece after machining or has not come loose from it are referred to as burrs.
- German Patent and Trademark Office has researched the following prior art in the priority application for the present application: US 3,980,387 A, DE 10 2013 009 131 A1, US 2008/0107016 A1, DE 10 2016 217 673 A1, US 2010/0072923 A1 and WO 2020/043231 A1.
- the object of the invention is to propose a contact element which is designed to be environmentally friendly and easy to manufacture.
- the electrical contact element according to the invention has at least one first area and at least one second area.
- the two areas border each other.
- the first area is preferably designed to be essentially cylindrical, whereas the second area is preferably designed to be essentially cuboid.
- the essentially cuboid shape of the second area means in particular that the second area can still have a partially cylindrical shape, with two flat, opposite side faces being milled or incorporated into the original cylinder.
- the two remaining side surfaces continue to correspond to the partial lateral surface of the original cylinder and are also referred to below as curved surfaces.
- the first area of the contact element preferably includes the plug-in area and is then provided for electrical contacting with a counter-contact element.
- the second area of the contact element preferably includes the connection area and is then provided for making electrical contact with an electrical conductor or for making electrical contact with a busbar.
- the first area and the second area are separated from one another by an at least partially circumferential groove.
- the groove at least partially borders the abutting surface between the two areas. Without the groove, downstream work steps such as brushing, blasting or vibratory finishing would have to be carried out on the workpiece, which would increase the overall production effort and thus make the product more expensive.
- the contact element can also have more than two areas and correspondingly more grooves according to the invention.
- a first area can be separated from a second area by an at least partially circumferential groove.
- a third area can, for example, be adjacent to the second area and separated from it by a groove according to the invention. If the second area has an essentially cuboid configuration, the third area is correspondingly again configured in the shape of a cylinder.
- two adjacent areas have a correspondingly different geometric configuration and are separated from one another by a groove according to the invention.
- the contact element consists of a material with a low lead content (less than or equal to 0.1 percent by weight).
- the contact element (1) consists of a copper-zinc alloy (CuZn) with a zinc content of 35 percent by weight to 42 percent by weight or a copper-tin alloy (CuSn) with a tin content of 4 percent by weight to 8 percent by weight or a copper-nickel alloy (CuNi) with a nickel content of 0.5% to 30% by weight or a copper-nickel-zinc alloy (CuNiZn) with a nickel content of 10% to 20% by weight and with a zinc content of 20% to 30% by weight or copper or a low-alloy copper with additional components up to 3 percent by weight.
- CuZn copper-zinc alloy
- CuSn copper-tin alloy
- CuNi copper-nickel alloy
- CuNiZn copper-nickel-zinc alloy
- the groove according to the invention effectively prevents the formation of burrs, which occurs in the production of the contact element in the boundary area between the first and second area.
- the groove can be provided in parallel with a work step of a work station, i.e. at the same time as other work steps, and this does not cause any significant additional work or additional costs.
- the first area and the second area are separated from one another by a completely circumferential groove.
- the groove also visually separates these areas.
- a full circumferential flute is not necessary to suppress chip formation.
- the groove would only have to run in the areas where bones occur. This is particularly the case when a component has faces that meet at an acute angle.
- a circumferential groove has advantages in terms of manufacturing technology, since the component is rotationally symmetrical and a circumferential groove can be realized more easily than a partially circumferential groove without removing the machining tool.
- the circumferential groove has a V-shaped cross section.
- the legs of the V-shaped cross-section can be of equal or unequal design.
- Such a groove can easily be realized with a simple tool and a correspondingly simple work step.
- the legs of the V-shaped cross section enclose an angle of between 25° and 120°, but preferably an angle of between 60° and 90°. It has been shown that with these angular positions, no burrs are formed on the workpiece or contact element.
- the groove can have a cup-shaped cross section. Cup-shaped here means that the legs of the cross section are curved at least in one area. This curvature is preferably realized in the upper or outer area of the groove. In this way, in particular in the case of deeper grooves, burr formation on the workpiece as a whole and in particular also along the groove can be prevented.
- the cross section of the groove has two geometrically different legs, one leg being straight, analogous to the V-shape, and the other leg being curved, analogous to the cup shape. Depending on the groove depth, this geometry can effectively prevent burr formation.
- the depth of the groove preferably corresponds to a maximum of 25% of the outer diameter of the first region of the contact element. It has been shown that such a groove depth prevents the formation of burrs and does not significantly affect the electrical properties of contact elements for industrial connectors, also known as heavy-duty connectors.
- a groove depth of at most 10% of the outer diameter of the first region of the contact element should preferably be selected. This also prevents the formation of burrs and the electrical properties of the contact elements, such as the current-carrying capacity, are not affected.
- the absolute depth of the groove is advantageously between 0.01 mm and a maximum of 10 mm, with the edge regions also being included in the depth interval.
- a very shallow groove has advantages when the contact element to improve the conductive properties and in particular Current-carrying capacity is then coated with a precious metal or a precious metal alloy.
- the contact element according to the invention is preferably a so-called pin contact element.
- the first area tapers at least in areas conically towards the end of the contact element. This means that the diameter of the contact element tapers towards the end as seen in the insertion direction.
- a mating contact element usually a socket contact, can be easily contacted.
- the first and the second area preferably have a boundary area in which the two areas converge. From a purely visual point of view, the two areas collide in the border area.
- the first area has a diameter that corresponds to an edge length of the second area. Colloquially, one would say that both areas in the border area are equally “strong” or “thick” in at least one level, although these terms are not geometrically precise for a cuboid shape.
- the transition between the two areas is homogeneous and, apart from the groove according to the invention, has no cracks, which is advantageous for the current-carrying capacity of the contact element.
- the groove according to the invention or the grooves according to the invention are so-called outer grooves.
- the grooves have been worked into the outer shell of the contact element.
- the groove is made in a solid material by a machining step, it is also referred to as a chip flute.
- a chip groove differs from grooves that are provided, for example, by stamping technology, for example in a contact element that was produced in a stamping and bending process. Such grooves can easily be introduced in the manufacturing process. However, the influence of the slots on the current-carrying capacity must be taken into account.
- the current-carrying capacity of a contact element is known to be strongly influenced by its surface, in particular the surface geometry.
- a workpiece of suitable length is first cut from a coil of wire.
- an at least partially circumferential groove is provided on the workpiece, which separates a first area KB and a second area AB from one another.
- the first area for making contact with a mating contact element and the second area for making electrical contact with a conductor or a busbar are formed.
- a rod is made to rotate and the workpiece is brought into the shape according to the invention.
- Several contact elements according to the invention can be manufactured from a single bar.
- the workpiece is made of a copper-zinc alloy, the lead content of this alloy being less than or equal to 0.1 percent by weight.
- a pure silver, a silver alloy, a pure gold or a gold alloy coating is preferably deposited on its surface in a galvanic process.
- Fig. 2 is a perspective detail of an inventive
- FIG. 3 shows a perspective view of a contact element according to the invention
- FIG. 4 different cross sections of a groove according to the invention.
- FIG. 5 shows a technical drawing of an alternative contact element according to the invention.
- Figures 1 and 2 show a perspective section of a contact element 1, T.
- the contact element 1, T consists of a first area KB, which is intended for electrical contact with a counter-contact element and a second area AB, which is intended for electrical contact with an electrical conductor or an electric busbar is provided. Both areas AB, KB can only be seen in full in FIG.
- the focus of Figures 1 and 2 is directed to the part of the contact element 1, T, in which the two areas AB, KB collisions. This area is also referred to below as the limit area.
- the first area KB is of essentially cylindrical design, with the first area tapering conically on the plug-in side, ie towards the contact tip.
- the second area AB is essentially cuboid educated.
- the diameter D of the first area KB changes from the boundary area to the contact tip.
- the diameter D of the first area KB does not decrease continuously.
- the diameter D alternates at least once in this area, which means that a previous diameter D2 is smaller than a subsequent diameter D3.
- the second section AB was formed from a cylinder, in which two flat side surfaces 3a were introduced. The remaining curved side surfaces 3b continue to correspond to the partial lateral surface of the original cylinder. As a result, the second region AB is configured essentially cuboid. It has two opposite flat side faces 3a and two opposite curved side faces 3b. The curvature of the curved side surfaces corresponds to the curvature of the cylindrical first area KB.
- an at least partially circumferential groove 2 is provided in the border area, ie between the first area KB and the second area AB.
- the groove 2 only runs on one side.
- one-sided means that there is a bevel 4 in the first area KB.
- This bevel 4 has the same geometry or design as the associated leg cross section of the groove 2.
- the groove 2 continues to run homogeneously in the area of the bevel 4, so that one can also speak of a completely circumferential groove 2, 4.
- the bevel 4 is a remnant of the full circumferential groove provided on the workpiece before the flat side surfaces 3a were formed. It can be seen in FIG.
- the contact element 1 has a through opening 5 in the second area AB.
- the contact element 1 can be conductively attached to a busbar (not shown).
- a screw attachment or a crimp connection for an electrical conductor could also be provided in the second area.
- FIG. 4 Three different cross sections of a groove 2, 2', 2" according to the invention can be seen in FIG.
- the groove 2 has a V-shaped cross-section, with the legs of the V-shape being of isosceles design and enclosing an angle of 90°.
- the groove 2' also has a V-shape, with the legs of the V-shape having unequal sides.
- the legs enclose an angle of 90°.
- the groove 2'' has a cup-shaped cross-section, with the legs being curved and symmetrical.
- the legs of the groove cross sections shown in FIG. 4 can be permuted with one another as desired. In any case, the idea of the invention would continue to be fulfilled. All types of grooves in this regard would, as desired, prevent the formation of burrs on the contact element 1 .
- FIG. 5 shows an alternative design of a contact element 1′′ according to the invention.
- the contact element 1′′ is designed as a socket contact. Therefore, in the first area KB, in the so-called contact area, individual axially protruding lamellae 6 are formed, which enclose a pin contact in its contact area.
- a circumferential groove 2 is provided between the first area KB and the second area AB in order to prevent burrs from forming at this point during manufacture.
- the first area KB of the contact element 1′′ is designed essentially in the shape of a cylinder, with the lamellae 6 forming a cylinder jacket which is separated between the lamellae 6 only by an axially running slot.
- the second region AB can have the shape of a double cylinder (two cylinders placed one on top of the other).
- an element of the connection area of the contact element can be designed as a cuboid and the element connected to it as a cylinder. It would then be useful from a manufacturing point of view to further subdivide the connection area into a second area AB and a third area ZB, as is shown by dashed lines in FIG. 5 by way of example. A circumferential groove 2' would then be provided between the second area AB and the third area ZB. In this case, a contact element 1′′ would have two grooves 2, 2′, which could be completely or partially circumferential.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020121701.3A DE102020121701A1 (de) | 2020-08-19 | 2020-08-19 | Gratfrei herstellbares Kontaktelement |
| PCT/DE2021/100676 WO2022037745A1 (de) | 2020-08-19 | 2021-08-06 | Gratfrei herstellbares kontaktelement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4200940A1 true EP4200940A1 (de) | 2023-06-28 |
Family
ID=77821546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21772969.8A Pending EP4200940A1 (de) | 2020-08-19 | 2021-08-06 | Gratfrei herstellbares kontaktelement |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12586943B2 (de) |
| EP (1) | EP4200940A1 (de) |
| CN (1) | CN115836445B (de) |
| DE (1) | DE102020121701A1 (de) |
| WO (1) | WO2022037745A1 (de) |
Family Cites Families (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3315220A (en) * | 1965-10-19 | 1967-04-18 | William H Flanagan | Electrical contacts and method of manufacturing same |
| DE2359429B2 (de) | 1973-08-29 | 1976-02-05 | Multi-Contact Ag, Basel (Schweiz) | Polanschluss |
| US4039244A (en) * | 1976-04-09 | 1977-08-02 | Coatings Inc. | Bimetallic electrical connector and method for making the same |
| ZA783792B (en) * | 1977-07-26 | 1979-07-25 | Marston Excelsior Ltd | Electrical connector |
| US4660922A (en) * | 1984-06-29 | 1987-04-28 | Pylon Company, Inc. | Terminal plug body and connector |
| EP0240642A1 (de) | 1986-03-12 | 1987-10-14 | CERAVER Société anonyme dite: | Verfahren zur Herstellung einer Anschlussklemme für ein Kabelende, und so erhaltene Anschlussklemme |
| US4723925A (en) * | 1987-03-02 | 1988-02-09 | Woven Electronics Corporation | Crimp contact for a printed circuit board and method |
| DE58908344D1 (de) | 1988-06-09 | 1994-10-20 | Siemens Ag | Kontaktelement. |
| JP3433433B2 (ja) * | 1994-03-07 | 2003-08-04 | 矢崎総業株式会社 | シールドコネクタ |
| GB9415765D0 (en) * | 1994-08-04 | 1994-09-28 | Smiths Industries Plc | Electrical contacts |
| IT1283191B1 (it) * | 1996-03-05 | 1998-04-16 | Luigi Ramari | Connettore a innesto rapido con impegno automatico e disimpegno mediante movimento di un corpo esterno |
| GB0012804D0 (en) * | 2000-05-25 | 2000-07-19 | Tyco Electronics Raychem Gmbh | Cable lug |
| US7344396B2 (en) * | 2005-08-23 | 2008-03-18 | Utilx Corporation | Cable connection assembly |
| US7807935B2 (en) | 2006-11-03 | 2010-10-05 | Antronix, Inc. | High-frequency uninterruptible signal and power bypass |
| DE202007009060U1 (de) | 2007-06-28 | 2008-08-07 | Osram Gesellschaft mit beschränkter Haftung | Elektrische Verbindung zwischen wenigstens zwei Teilen und elektrisches Gerät mit einer derartigen Verbindung |
| DE102009059307A1 (de) * | 2009-12-23 | 2011-06-30 | Schunk Sonosystems GmbH, 35435 | Verfahren zum elektrisch leitenden Verbinden von Drähten |
| JP2013232283A (ja) * | 2012-04-27 | 2013-11-14 | Auto Network Gijutsu Kenkyusho:Kk | 端子およびその製造方法 |
| DE102013009131B4 (de) | 2012-06-01 | 2023-12-28 | Bal Seal Engineering, Llc | Gerillte Verbinder mit Haltemechanismen |
| CN203445261U (zh) * | 2013-08-29 | 2014-02-19 | 浙江工贸职业技术学院 | 一种电器接头 |
| CN203800196U (zh) * | 2014-04-30 | 2014-08-27 | 浙江朋友电力金具有限公司 | 一种铜铝接线端子 |
| CN204565664U (zh) * | 2015-04-27 | 2015-08-19 | 温州市金久紧固件有限公司 | 一种防毛刺的平整t型螺母 |
| CN105990729B (zh) | 2016-04-22 | 2018-08-07 | 广东林一新能源科技有限公司 | 一种新能源汽车连接器端子及其制造方法 |
| US9673578B1 (en) * | 2016-05-06 | 2017-06-06 | Te Connectivity Corporation | Cable-mounted electrical connector |
| DE102016217673B4 (de) | 2016-09-15 | 2020-06-04 | Te Connectivity Germany Gmbh | Elektrischer Kontakt für einen Steckverbinder, mit drehbaren Wälzkontaktkörpern und elektrische Steckverbindung mit einem solchen Kontakt |
| EP3695465A4 (de) * | 2017-10-11 | 2021-06-23 | CommScope Technologies LLC | Adapter für dichtungsbalg für elektrische verbindungen |
| DE102018100440A1 (de) * | 2018-01-10 | 2019-07-11 | Phoenix Contact Gmbh & Co. Kg | Verfahren zum Herstellen eines kaltverformbaren Crimpkontakts, Verfahren zum Herstellen einer elektromechanischen Crimpverbindung und Crimpkontakt |
| DE102018111712A1 (de) * | 2018-05-16 | 2019-11-21 | Kolektor Group D.O.O. | Elektro-Bauteil und Verfahren zu dessen Herstellung |
| CN109004480A (zh) * | 2018-06-28 | 2018-12-14 | 南京华腾汽配有限公司 | 一种换向器 |
| DE202018104958U1 (de) | 2018-08-30 | 2018-09-12 | Harting Electric Gmbh & Co. Kg | Steckverbinder mit Komponenten aus verbessertem Material |
| CN109787012B (zh) * | 2019-02-27 | 2022-03-25 | 深圳市泰科汉泽精密电子有限公司 | 弹簧探针 |
| FR3095086B1 (fr) * | 2019-04-12 | 2021-04-16 | Aptiv Tech Ltd | Procédé de fabrication d’un contact de puissance mâle et contact de puissance mâle |
| DE102020103866A1 (de) * | 2020-02-14 | 2021-08-19 | Phoenix Contact E-Mobility Gmbh | Kontaktelementbaugruppe für ein Steckverbinderteil |
-
2020
- 2020-08-19 DE DE102020121701.3A patent/DE102020121701A1/de active Pending
-
2021
- 2021-08-06 CN CN202180049333.1A patent/CN115836445B/zh active Active
- 2021-08-06 WO PCT/DE2021/100676 patent/WO2022037745A1/de not_active Ceased
- 2021-08-06 US US18/041,969 patent/US12586943B2/en active Active
- 2021-08-06 EP EP21772969.8A patent/EP4200940A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022037745A1 (de) | 2022-02-24 |
| CN115836445B (zh) | 2026-03-24 |
| US20240030638A1 (en) | 2024-01-25 |
| DE102020121701A1 (de) | 2022-02-24 |
| CN115836445A (zh) | 2023-03-21 |
| US12586943B2 (en) | 2026-03-24 |
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