EP1997187A1 - Broche de contact et son procédé de fabrication - Google Patents

Broche de contact et son procédé de fabrication

Info

Publication number
EP1997187A1
EP1997187A1 EP07723163A EP07723163A EP1997187A1 EP 1997187 A1 EP1997187 A1 EP 1997187A1 EP 07723163 A EP07723163 A EP 07723163A EP 07723163 A EP07723163 A EP 07723163A EP 1997187 A1 EP1997187 A1 EP 1997187A1
Authority
EP
European Patent Office
Prior art keywords
contact pin
hole
contact
sections
opening
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.)
Withdrawn
Application number
EP07723163A
Other languages
German (de)
English (en)
Inventor
Wiestaw Kramski
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.)
Kramski GmbH
Original Assignee
Kramski 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 Kramski GmbH filed Critical Kramski GmbH
Publication of EP1997187A1 publication Critical patent/EP1997187A1/fr
Withdrawn legal-status Critical Current

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
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
    • 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 contact pin with a contact and a connection area for pressing into a plated-through hole of a printed circuit board according to the preamble of claim 1 and a method for its production according to the preamble of claim 13.
  • Such contact pins are particularly intended to produce by soldering in metallized holes of electrical circuit boards a solderless, electrically conductive connection to at least one conductor of the circuit board.
  • a solderless, electrically conductive connection to at least one conductor of the circuit board.
  • the press-in sections of such contact pins are plastically deformable against corresponding force on the one hand, and on the other hand corresponding demands are made with respect to the pull-out forces on the elastic properties after insertion.
  • This property profile is achieved by means of contact pins or press-in pins which have an elastic-plastic area in order to bridge the hole tolerances of the boards on the one side and to ensure the desired insertion and removal forces and the contacting on the other side.
  • a press-in contact is known, which is made of a material to form two spaced-apart, initially as required open sections without cutting, later forming the Ein 1500pin each other in Appendix.
  • the cross-sectional shape of the sections is selected so that they clamp selectively with the walls in the hole of a circuit board, which can lead to tin abrasion and stress on the hole edge.
  • sheet thickness smaller than, for example, 0.8 mm
  • smaller hole diameter lower clamping forces are always generated, so that a permanently secure electrical connection is at risk.
  • US Pat. No. 6,135,813 A shows an insertion pin which has at its front end two nearly opposite projections which come to lie outside the hole in the state introduced into the printed circuit board. From the pin diameter to the outside projecting projections anchor the pin after passing the pin through the hole of the circuit board, while the inwardly projecting projections do not distort each other and in no way change, but if necessary, soldered together in position and secured with it. So they do not affect the behavior in the hole of the circuit board.
  • a contact pin which is punched out of a material, and before formation of the contact element has two spaced-apart portions, which later form the Ein 1500pin.
  • a needle-tube-shaped opening is provided in each of the sections. By bending over, the two sections are placed against each other, wherein by corresponding pre-deformation, the two ends of these sections are placed against each other, so that the Ein 1500pin results, which can then be inserted into a plated-through hole of a printed circuit board. However, the free ends are not interconnected.
  • the production of such contact pins is usually carried out by punching the contact pins with the introduction of central longitudinal slots, which allow the elastic behavior, as is known for example from DE 195 08 133 C2 or DE 198 31 672 B4.
  • the central slot is optimized based on the requirements of the insertion and removal forces, whereby the production technology comes to its limits when punching, for example as a result of stamp stability.
  • the inner shape of the slot is limited by punching and cutting forces to a certain size, since they can not be produced otherwise.
  • Contact pins with embossed zones are also e.g. from JP 03 017971 A or US 4,923,414 A known, in which case usually the press-in portion is formed so that it can deform plastically during pressing. These pins usually do not cover the range of the standard accordingly. In addition, the manufacturing is very sensitive to tolerances and the risk of shaving is relatively high.
  • the present invention seeks to provide a contact pin and a method for its production, which is produced by stamping standard with optimal extraction forces.
  • the contact pin has an open shape in which after the punching operation, the later slot forming icardiiche opening is open to the outside and lies between the sections that later form the insertion of the contact pin.
  • the limitations of punching technology can be circumvented.
  • any basic shape of a contact pin can be easily made larger or smaller, ie the press-in and Auspress material can be better defined and are eg softer and harder in the transitions, which is not possible in today's punching technology with a closed Needle-Eye.
  • any geometric formations are formed, thereby forming, for example, support areas.
  • These support areas can control the elastic-plastic behavior over the different hole diameters.
  • the projections can preferably come to rest in the hole itself. But they can also lead to a kind of tilting movement, which makes the area pushed through the hole wider than the pressing area, which leads to increased extrusion forces. As a result, even with decreasing sheet thickness and smaller hole diameter still good clamping forces can be generated. Tests have shown that even with small hole diameters of 1.0 mm and sheet thicknesses of 0.6 mm, a secure connection can still be achieved.
  • the moldings or support areas produced by preferably chip-producing production or forming are no longer made contiguous with increasing miniaturization of the contact pins. Instead, an open opening is first punched out in order to release the moldings there.
  • the press-in area of the contact pin is analogously produced as an open fork, which eliminates the manufacturing restrictions.
  • the contact pin can be closed, for example mechanically, by welding, riveting, laser welding or the like, whereby the elongate opening or the slot then preferably forms in the middle.
  • the slot can be made tapering in the front region in the insertion direction, so that there is less material there is that during insertion of the press-in portion of an elastic deformation in the way.
  • Fig. 1 is a view of a contact pin in the punched, open state and in a state in which the ends of the contact pin are connected to each other
  • Fig. 3 is an enlarged view of the front portion of the contact pin of FIG. 2,
  • FIG. 5 is a section along line 5-5 of Fig. 3,
  • FIG. 7 shows the contact pin according to FIGS. 1 to 5 in a state introduced in the hole of a printed circuit board
  • FIG. 9 shows a view analogous to FIG. 8 with a variant of the product contour
  • FIG. 10 shows a view of a contact pin in a further embodiment in which the projections come to lie in the hole of a printed circuit board
  • Fig. 11, 12 views of the contact pin when mounted in printed circuit board holes of different diameters.
  • the figures show a contact pin 10 of a formed material for pressing into a plated-through hole 11 on a printed circuit board 12, which is shown in FIG. If in the following a forming or forming process is mentioned, it inter alia a punching, cold extrusion, cold working or the like understood, but in principle also other deformation possibilities are given, provided that a transformation is made possible, the production of at least initially open, allowed by sections of the contact pin edged opening.
  • the contact pin has a press-fit section 13 which has at least two contact legs 15, which are spaced apart from one another by at least one elongated opening 14 and curved outward in their central region.
  • This press-fit reaches the hole 11 of a printed circuit board 12 during insertion as shown in FIG. 7, where it plastically deformed and thus ensures the desired contact with the circuit board.
  • This contacting is to meet several requirements, which are essentially to be seen in the fact that a low Cl-resistance is guaranteed, no contact corrosion occurs, minimal press forces and maximum pull-out forces are present, a temperature resistance is ensured and preferably no chip formation during assembly established.
  • the requirements for temperature resistance rise more and more and the compounds thus created should be durable, especially in the automotive sector even with larger vibrations.
  • the diameter of the holes of the circuit boards has a relatively large tolerance
  • the contact pins and the contacting a small tolerance is required, it becomes clear which dimensioning limits arise in the production of such contact pins, especially if they produced by molding processes such as a punching process and this with increasingly smaller dimensions.
  • the contact pin 10 also has an insertion section 16 for insertion into the hole 11, which is formed according to FIGS. 2 and 3 by at least two elongate sections 17 of the contact pin, which abut one another during the insertion.
  • This open design thus creates a new scope for the design of the elongated opening. In this respect, only a few examples of the design of this opening are given below, which do not limit the invention further.
  • the portions 17 are arranged substantially approximately parallel to each other, but only the formation of the outwardly open elongated opening 14 between them is essential. They may, if necessary, be connected together at their ends 17a to form a pin while enclosing the elongated opening 14.
  • the connection does not actually have to take place at the last point of the end 17a, the person skilled in the art will rather choose this connection point in such a way that both a suitable insertion and correspondingly high pull-out forces are ensured.
  • the compound can e.g. a mechanical connection, conceivable would be a common molding under positive locking, or a welded joint such. be a laser welding, but other connection possibilities, such as a riveting process also conceivable.
  • projections 18 are provided in the opening, which come into operative connection with one another during the plastic deformation of the contact pin 10.
  • these projections can be arbitrarily shaped, in an embodiment according to Figures 3, 4 and 7, these projections are formed approximately opposite and come in the plastic deformation with each other, which can also be spoken of a positive engagement.
  • These projections 18 on the one hand have the function of controlling the elastic-plastic behavior in the hole 11 via different hole diameters.
  • the formations which may also be referred to as a support element or pin, are provided to allow a better insertion of the contact and thus preferably to lie in a region which lies after insertion of the contact pin within the hole 11 of the circuit board.
  • the projections 18 are in closed longitudinal opening 14 in the insertion direction in the opening 14 that they come to rest in the inserted state in the hole 11 and there increase the pull forces without contributing to increased chip formation during insertion.
  • other arrangements and configurations of the projections 18 are possible, for example in the front third of the opening 14 so that they through the hole 11 during insertion be pushed over.
  • the projections are effective even with different hole diameters of the circuit board.
  • Fig. 11 shows the contact pin in a hole with a diameter of eg 1, 09 mm
  • Fig. 12 shows the same contact pin in a hole with a diameter of 0.94 mm. In both cases, the projections build up sufficient holding forces.
  • the portions 17 may have an edge or bead embossing.
  • This embossing can be a variable embossing 19, so that the embossing can also influence the press-in forces and extrusion forces.
  • the cross section of the sections 17 increases from the insertion section 16 to the press-in section 13.
  • the contour of the embossing can be influenced in order to obtain a better osculation or contact surface.
  • the ends 17a of the sections 17 are tapered and rounded at their outer edges 20, which are usually pointing away from each other, to form an insertion pin.
  • the sections are at least in the region of the insertion section
  • the production of the contact pin 10 is initially carried out by forming the sections 17, so that they adjoin the elongated opening 14 which is open towards the outside in a fork-tooth manner. Following the sections 17 are bent together. They can then be connected to one another at the ends of the elongated opening 14, preferably at their ends 17a, or they can lie loosely together. This connection can be made mechanically or by welding.
  • the deformation of the sections can be done in any way, preferably by punching, cold extrusion or cold forming.
  • the connection of the sections 17 takes place immediately after the forming, ie, for example, during the punching process by welding or laser welding, ie essentially in one operation or production step.
  • the sections 17 can be provided with an embossment 19 or notches 21.

Landscapes

  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Measuring Leads Or Probes (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Abstract

La broche de contact (10) selon l'invention à presser dans un trou métallisé d'une carte de circuit imprimé est fabriquée par transformation. Sa section de pression (13) comporte deux côtés de contact (15) séparés l'un de l'autre par une ouverture longitudinale (14) et bombés vers l'extérieur dans leur partie centrale, qui s'appuient contre la paroi du trou par déformation plastique lorsqu'ils sont pressés dans le trou de la carte de circuit imprimé. Une section d'introduction (16) est réalisée afin d'introduire dans le trou (11) au moyen de deux sections (17) oblongues de la broche de contact (10) adjacentes lors de l'introduction. Après le processus de transformation et avant l'introduction dans le trou (11), les sections (17) touchent l'ouverture oblongue ouverte vers l'extérieur à la manière de dents de fourche. La présence d'au moins une adaptation (18) pour la constitution de zones de butée pour la commande du comportement élastique-plastique dans le diamètre du trou dépassant dans l'ouverture au bord de l'ouverture oblongue (14) permet d'obtenir une broche de contact qui peut être fabriquée selon les normes par des presses à emboutir avec des forces de sortie optimales, ainsi que son procédé de fabrication.
EP07723163A 2006-03-12 2007-03-10 Broche de contact et son procédé de fabrication Withdrawn EP1997187A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006011657A DE102006011657A1 (de) 2006-03-12 2006-03-12 Kontaktstift und Verfahren zu dessen Herstellung
PCT/EP2007/002111 WO2007104500A1 (fr) 2006-03-12 2007-03-10 Broche de contact et son procédé de fabrication

Publications (1)

Publication Number Publication Date
EP1997187A1 true EP1997187A1 (fr) 2008-12-03

Family

ID=38158011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07723163A Withdrawn EP1997187A1 (fr) 2006-03-12 2007-03-10 Broche de contact et son procédé de fabrication

Country Status (6)

Country Link
US (1) US7344389B2 (fr)
EP (1) EP1997187A1 (fr)
JP (1) JP2009529686A (fr)
CN (1) CN101401264B (fr)
DE (1) DE102006011657A1 (fr)
WO (1) WO2007104500A1 (fr)

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DE102006040640A1 (de) * 2006-08-30 2008-03-13 Robert Bosch Gmbh Einpressstift
US20080318453A1 (en) * 2007-06-20 2008-12-25 Dancison Philip M Compliant pin
DE102008004882A1 (de) 2008-01-17 2009-07-23 Robert Bosch Gmbh Einpresskontakt mit einem Sockel, einem Kontaktstift und einem zweiten Stift
CN201199555Y (zh) * 2008-04-28 2009-02-25 鸿富锦精密工业（深圳）有限公司 插针
DE102008002558A1 (de) * 2008-06-20 2009-12-24 Robert Bosch Gmbh Kontaktstift für eine elektronische Schaltung
US7780483B1 (en) 2008-12-09 2010-08-24 Anthony Ravlich Electrical press-fit contact
DE102009021033A1 (de) * 2009-05-07 2010-09-16 E.G.O. Elektro-Gerätebau GmbH Bedieneinrichtung und Verfahren zur Herstellung einer Bedieneinrichtung
US8313344B2 (en) * 2009-12-30 2012-11-20 Fci Americas Technology Llc Eye-of-the-needle mounting terminal
DE102010033079A1 (de) * 2010-08-02 2012-02-02 Ludger Sorig Elektrischer Einpresskontakt
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US9083091B1 (en) * 2013-09-06 2015-07-14 Anthony Ravlich Electrical terminal connector for solderless connection of parts to electrical contact holes
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JP2016143441A (ja) * 2015-01-29 2016-08-08 三菱電機株式会社 圧入端子及び半導体装置
JP6550890B2 (ja) * 2015-04-22 2019-07-31 住友電装株式会社 プレスフィット端子
JP6451569B2 (ja) * 2015-09-14 2019-01-16 株式会社デンソー 電子装置
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US10408860B2 (en) * 2017-03-31 2019-09-10 Intel Corporation Interconnection system with flexible pins
CN107302145A (zh) * 2017-07-17 2017-10-27 苏州福丰联合电子有限公司 导电端子
JP6735263B2 (ja) * 2017-11-01 2020-08-05 矢崎総業株式会社 プレスフィット端子及び回路基板のプレスフィット端子接続構造
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FR3086109B1 (fr) * 2018-09-14 2021-09-24 Safran Electronics & Defense Broche de connexion elastique, connecteur et dispositif electronique comportant de telles broches
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Also Published As

Publication number Publication date
WO2007104500A1 (fr) 2007-09-20
JP2009529686A (ja) 2009-08-20
DE102006011657A1 (de) 2007-09-20
CN101401264A (zh) 2009-04-01
US7344389B2 (en) 2008-03-18
CN101401264B (zh) 2012-01-25
US20070212907A1 (en) 2007-09-13

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