EP1754285A1 - Contact d'estampage et son procede de production - Google Patents

Contact d'estampage et son procede de production

Info

Publication number
EP1754285A1
EP1754285A1 EP05750198A EP05750198A EP1754285A1 EP 1754285 A1 EP1754285 A1 EP 1754285A1 EP 05750198 A EP05750198 A EP 05750198A EP 05750198 A EP05750198 A EP 05750198A EP 1754285 A1 EP1754285 A1 EP 1754285A1
Authority
EP
European Patent Office
Prior art keywords
press
contact
legs
bore
anspmch
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
Application number
EP05750198A
Other languages
German (de)
English (en)
Other versions
EP1754285B1 (fr
Inventor
Andreas Veigel
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE102004028202A external-priority patent/DE102004028202B4/de
Application filed by Individual filed Critical Individual
Publication of EP1754285A1 publication Critical patent/EP1754285A1/fr
Application granted granted Critical
Publication of EP1754285B1 publication Critical patent/EP1754285B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • H01R13/41—Securing in non-demountable manner, e.g. moulding, riveting by frictional grip in grommet, panel or base
    • 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 press-in contact and a method for its production.
  • Press-in contacts of this type are used to produce electrical, solder-free press-in contacts, for which purpose these are pressed, in particular, into through-plated bores in printed circuit boards.
  • Stamping processes in particular can be used to produce press-in contacts with elastic press-in areas.
  • Such press-in contacts have two legs spaced apart from one another in the press-in region.
  • the legs of the press-in contact are produced by punching into a solid material, a correspondingly large material surface being required to punch the hole between the legs. Accordingly, the press-in contacts produced in this way generally have a flat, flat shape. When these contacts are introduced into the circular bores, this essentially results in two contact surfaces of the bearing which are offset by 180 ° to one another Press-in contact on the wall of the bore, which are formed by the narrow sides of the press-in contact.
  • No. 3,846,741 A describes press-in contacts for introducing into bores in printed circuit boards which are produced by bending metal strips.
  • a press-in contact can be formed by two metal strips lying one on top of the other, the lower ends of which are bent up in such a way that they form apart legs that are pressed into the respective bore under pressure.
  • the invention is based on the object of providing a press-in contact which, on the one hand, can be produced cost-effectively and efficiently and, on the other hand, has good and reproducible mechanical and electrical contact properties.
  • the press-in contact comprises a contact body and two limbs formed in one piece therewith, which are separated by a separating surface produced by means of non-cutting machining and are widened within a press-in region and are arranged at a distance from one another. moreover a tip adjoining the press-in area is provided, which is formed by the free ends of the legs converging towards one another.
  • the press-in contact according to the invention can be produced simply and efficiently.
  • legs are worked into a contact body forming a solid part by means of a non-cutting machining process, which legs open out on the remaining segment of the contact body.
  • the legs are preferably produced by shearing the contact body.
  • the subsequent widening of the legs in the press-in area is then preferably carried out by means of a dome.
  • Tools are advantageously used here that not only enable processing of a single press-in contact, but also simultaneous processing of several press-in contacts. This leads to extremely efficient production of press-in contacts.
  • press-in contact Another important advantage of the press-in contact according to the invention is that its shape can be adapted to the circular contour of the through-plated hole in a printed circuit board into which the press-in contact is to be pressed, which results in a particularly high quality of contact, in particular is also largely insensitive to tolerances of the individual components of the contact. It is particularly advantageous that a high current carrying capacity of the contact is obtained with the press-in contact according to the invention, which is required in particular for high-current applications.
  • the contact body of the press-in contact has a square cross section. Since the legs are produced by cutting or, in particular, shearing one end of the contact body, the sum of the cross sections of the legs in the press-fit area again corresponds, at least approximately, to the square area. before the contact body.
  • This square cross-sectional area of the legs in the press-in area represents a geometrically optimal adaptation to the circular contour of the bore.
  • the contact forces run in a radial direction with respect to the center of the bore, the contact points between the press-in contact and the bore being offset by 90 ° to one another. This means a symmetrical distribution of the contact forces and thus a torque-free and centric mounting of the press-in contact in the bore.
  • the conductor cross-section can be around 60 to 80% of the hole cross-section due to the permissible hole tolerances.
  • the outer edges of the legs of the press-in contact each have a drawn or embossed radius, at least in the press-in region. These radii form four large, gas-tight connections with the wall of the borehole, which are clearly delimited by free spaces, as a result of which a corrosion-resistant contact between the press-in contact and the borehole is obtained, which can withstand high currents.
  • press-in contact in the form of a tip makes the insertion of the press-in contact into the respective bore considerably easier.
  • the free ends protrude from the underside of the bore. Then these can be bent up and against the lower edge of the hole be pressed, which creates a positive connection between the bent tip and the circuit board.
  • the connection formed in this way corresponds to a riveted connection and leads to a very good hold of the press-in contact in the bore.
  • press-in contacts can also be used in this way as purely mechanical fixing elements without electrical function.
  • the press-in contact has a connection area which is formed by the contact body and adjoining segments of the legs, which lie close together.
  • the segments of the legs which form the press-in region and are widened against one another then adjoin this connection region.
  • an efficient tolerance compensation is created. This is done by the fact that the stiffness of the press-in contact in the connection area is reduced by the separation of the legs in the connection area, which ensures that the permissible forces on the printed circuit board and the press-in area are not exceeded during the press-in process, even if the axis is offset between the press-in contact and the bore due to tolerances.
  • the press-in area of the press-in contact according to the invention has good elastic properties due to its shape.
  • the press-in contact can also consist of brass instead of the commonly used materials such as copper alloys, i.e. a material with poor spring properties but very high conductivity values.
  • Figure la Schematic representation of an embodiment of the press-in contact according to the invention.
  • Figure lb cross section through the press-in contact according to Figure 1.
  • FIG. 2 cross section through a hole in a printed circuit board with a press-in contact pressed therein according to FIGS. 1 a, b.
  • FIG. 3 Schematic representation of a contact body for producing a press-in contact according to FIG. 1.
  • FIG. 4 cross section through an embossing tool for embossing contact bodies according to FIG. 3.
  • FIG. 5 shows a cross section through a shearing tool for shearing contact bodies according to FIG. 3.
  • FIG. 6 contact body with legs opening at this, produced with the shear tool according to FIG. 5.
  • FIG. 7 shows a cross section through an expansion tool for expanding the legs of the contact body according to FIG. 5.
  • Figures la and lb show an embodiment of a press-in contact 1.
  • Figure la shows a side view of the press-in contact 1
  • Figure 1 b shows a cross section along the line A in Figure la.
  • the press-in contact 1 can, as shown schematically in FIG. 2, be pressed into a through-metallized bore 2 of a conductor plate, the bore 2 having a circular cross section.
  • the press-in contact 1 in the present case consists of a brass part.
  • the press-in contact 1 has a contact body 3, on the underside of which two legs 4 open out freely.
  • the legs 4 are formed in that a separation running along a separation surface is introduced into a segment of the contact body 3 by cutting or shearing, so that the eyes Connect 4 to the remaining solid segment of the contact body 3.
  • the legs 4 are thus formed in one piece with the contact body 3.
  • the legs 4 are of identical design and are formed symmetrically to the plane of symmetry running in the longitudinal direction of the press-in contact 1.
  • the contact body 3 has a rectangular cross section, in the present case a square cross section that is constant over its length. Since the legs 4 are formed by shearing or cutting from the contact bodies 3, they each have a rectangular cross section which is constant over their length, the cross sections complementing the square cross section of the contact body 3. Only in the area of the free ends of the legs 4 can their cross sections be somewhat tapered in order to facilitate the insertion of the press-in contact 1 into the bore 2.
  • the press-in contact 1 is divided into different areas, namely a connection area 5 at its upper end, a press-in area 6 adjoining it and a tip 7 at its lower end.
  • connection area 5 which is used for the electrical connection of external units to the press-in contact 1, consists of the solid contact body 3 and the adjoining upper segments of the legs 4, which adjoin one another separated by a separating surface segment 8.
  • the connection area 5 is completed by the area of the legs 4, which diverge starting from the separating surface segment 8 and thus enclose an intermediate space in the form of a gusset 9.
  • the legs 4 are expanded by means of suitable tools and are at a greater distance from one another.
  • the legs 4 thus form an elastic press-in area 6. Due to the tool processing, the inner sides in this area have a smoothed surface.
  • the legs 4 in the area of the press-fit area 6 form an eyelet, wherein whose outer dimension is larger than the diameter of the bore 2 into which the press-in contact 1 is to be pressed.
  • the space between the legs 4 in the press-in area 6 forms a defined expansion area 10.
  • the tip 7 of the press-in contact 1 adjoins the press-in area 6.
  • the tip 7 is formed by the free ends of the legs 4.
  • the legs 4 run towards one another at predetermined angles of inclination and enclose an intermediate space in the form of a gusset 11.
  • the free ends of the legs 4 run essentially parallel.
  • the legs 4 are separated by a separation gap 12.
  • the outer edges of the legs 4 have radii 13 in the press-in area 6.
  • the outer edges of the press-in contact 1 can have radii 13 drawn or embossed over their entire lengths.
  • the outer edges of the legs 4 in the press-in area 6 have radii 13 embossed by a separate working step.
  • the tip 7 of the press-in contact 1 is first inserted into the bore 2. Since the cross sections of the legs 4 are reduced in the area of the tip 7 and the free ends of the legs 4 converge, their outer dimensions are smaller than the diameter of the bore 2, which ensures that the tip 7 is easily inserted into the bore 2.
  • the press-in region 6 of the press-in contact 1 is then pressed into the bore 2, the legs 4 being pressed against one another in the press-in region 6 during the press-in and, as shown in FIG.
  • FIG. 2 shows the legs 4 pressed into the bore 2 in the press-in area 6. Since the legs 4 are produced by shearing or cutting from the contact body 3 and this has a square cross-section, the legs 4 in the press-in area 6 complement one another to form this square cross-sectional area , which is optimally adapted to the geometry of the circular bore 2.
  • the geometry of the legs 4 ensures that the contact forces F between the press-in contact 1 and the bore 2 act in the radial direction and in a rotationally symmetrical manner with respect to the center of the bore 2, as shown in FIG. This results in a torque-free, centric, secure mounting of the press-in contact 1 in the bore 2.
  • the radii 13 of the legs 4 form large-area, gas-tight contact surfaces 2a with the bore 2.
  • the contact surfaces 2a are clearly delimited by subsequent free spaces 2b, which results in a defined surface pressure between the press-in contact 1 and the bore 2. Dirt and foreign layers can be displaced into the free spaces 2b when pressed in.
  • the sum of the contact areas 2a of the gas-tight connections produced in this way is generally larger than the cross section of the press-in contact 1. This results in a very low electrical contact resistance and a correspondingly high current carrying capacity.
  • the square cross-sectional arrangement of the legs 4 forms a large conductor cross section in the smallest possible bore 2.
  • the tip 7 of the press-in contact 1 pressed into the bore 2 protrudes slightly beyond the lower edge of the bore 2. If necessary, the free the ends of the legs 4 are bent up and pressed against the edge of the bore 2, whereby a rivet connection is created, which ensures a further improved mechanical hold of the press-in contact 1.
  • Figures 3 to 7 show the method for producing the press-in contact 1 according to Figures la and lb.
  • Figure 3 shows the starting material for producing a press-in contact 1 namely in the form of a Maisgro ⁇ ers 3, which is a solid part made of brass.
  • the contact body 3 has a square cross section that is constant over its length. The outer edges of the contact body 3 can have drawn or embossed radii 13.
  • FIGS. 4, 5 and 7 show cross-sectional representations of tools by means of which a press-in contact 1 is produced from the contact body 3 by non-cutting machining processes.
  • the tools are designed in such a way that a plurality of contact bodies 3 can be processed at the same time, so that, in particular, raster arrangements with a plurality of press-in contacts 1 can also be produced therewith.
  • FIGS. 4, 5 and 7 tools for the simultaneous processing of four contact bodies 3 are provided. In principle, the number of contact bodies 3 to be processed simultaneously can also vary.
  • FIG. 4 shows an embossing tool 14. This embossing tool 14 has four embossing molds 15 for receiving contact bodies 3.
  • the longitudinal axis of a contact body 3 mounted in an embossing mold 15 runs perpendicular to the plane of the drawing.
  • the embossing dies 15 are adapted to the cross sections of the contact body 3. Due to the rounded corners of the embossing molds 15, radii 13 are impressed on the outer edges of the contact body 3 in the press-in area 6 of the press-in contact 1 that protrudes in each case.
  • each embossing mold 15 has at least one projection 15a, with which a notch is made in the respective contact body 3. Then the Kunststoffgro ⁇ er 3 are machined in the shear tool 16 shown in Figure 5.
  • the shear tool 16 has receptacles 17 for the contact body 3 and an arrangement of shear punches 18a, b. These form first shear punches 18a, which are moved downward to shear a contact body 3 in the drawing plane of FIG. 5, and second shear punches 18b, which are moved upward.
  • Each contact body 3 has a first and a second shear stamp 18 a, b in the receptacle 17, the longitudinal axis of the contact body 3 running perpendicular to the plane of the drawing. Due to the opposing shear movements of the first and second shear punches 18a, b acting on a contact body 3, the lower region of a contact body 3 is sheared to form two legs 4 separated by a separating surface.
  • the contact body 3 obtained after a shearing process with the two legs 4 is shown in FIG. Due to the design of the shear punches 18a, b, the legs 4 opening out at the contact body 3 form a v-shaped arrangement.
  • the legs 4 of the contact bodies 3 are bent together, so that they abut one another again.
  • the contact bodies 3 pre-processed in this way are introduced into receptacles 20 of the expansion tool 19.
  • the longitudinal axes of the contact bodies 3 mounted there are perpendicular to the plane of the drawing.
  • Channels 21 open out at the receptacles 20, into each of which a mandrel 22 for widening the legs 4 in the press-in region 6 of the press-in contact 1 is inserted. Since the legs 4 are pressed apart during expansion by means of the dome 22, the widths of the receptacles 20 are greater than the width of the contact body 3, so that the legs 4 can move laterally when the dome 22 is pressed in. The space forming the expansion area 10 between the legs 4 in the press-in area 6 is due to the shape of the cathedral 22 determined. The inside of the legs 4 are smoothed by processing with the dome 22. The notch punched into the contact body 3 with the embossing tool 14 according to FIG. 3 serves as an insertion aid for the dome 22. With the tools according to FIGS. 4, 5, 7, the press-in contact 1 can be produced simply and efficiently. No further processing steps are required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

L'invention concerne un contact d'estampage (1) et son procédé de production. Ce contact d'estampage (1) comprend un corps de contact (3) et deux branches (4) configurées de manière à ne faire qu'un avec ce corps de contact. Ces branches sont séparées par une surface de séparation générée par façonnage sans enlèvement de copeaux, élargies dans une zone d'estampage (6) et disposées à une distance l'une de l'autre. Une pointe (7) est en outre prévue à côté de la zone d'estampage (6), cette pointe étant formée par les extrémités libres des branches (4) qui se rejoignent.
EP05750198A 2004-06-09 2005-05-31 Contact d'estampage Active EP1754285B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004028202A DE102004028202B4 (de) 2004-06-09 2004-06-09 Einpresskontakt
DE102004055548 2004-11-17
PCT/EP2005/005824 WO2005122337A1 (fr) 2004-06-09 2005-05-31 Contact d'estampage et son procede de production

Publications (2)

Publication Number Publication Date
EP1754285A1 true EP1754285A1 (fr) 2007-02-21
EP1754285B1 EP1754285B1 (fr) 2009-05-20

Family

ID=34970230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05750198A Active EP1754285B1 (fr) 2004-06-09 2005-05-31 Contact d'estampage

Country Status (7)

Country Link
US (1) US7891992B2 (fr)
EP (1) EP1754285B1 (fr)
JP (1) JP4938663B2 (fr)
KR (1) KR100907966B1 (fr)
DE (1) DE502005007322D1 (fr)
ES (1) ES2325377T3 (fr)
WO (1) WO2005122337A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015014553A1 (de) 2015-11-11 2017-05-11 Andreas Veigel Elektrisches Kontaktelement zum Einsetzen in eine metallische Bohrung

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US20080166928A1 (en) * 2007-01-10 2008-07-10 Liang Tang Compliant pin
US20080318453A1 (en) * 2007-06-20 2008-12-25 Dancison Philip M Compliant pin
CN201887288U (zh) * 2010-11-03 2011-06-29 富士康(昆山)电脑接插件有限公司 压入式安装脚结构及应用该结构的连接器
JP2013131364A (ja) * 2011-12-21 2013-07-04 Sumitomo Wiring Syst Ltd 端子金具及び端子金具の接続構造
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US9356367B2 (en) * 2014-01-08 2016-05-31 Tyco Electronics Corporation Electrical connector having compliant contacts and a circuit board assembly including the same
US9276338B1 (en) * 2014-06-24 2016-03-01 Emc Corporation Compliant pin, electrical assembly including the compliant pin and method of manufacturing the compliant pin
DE102015119484A1 (de) * 2015-11-11 2017-05-11 Phoenix Contact Gmbh & Co. Kg Steckkontakt
DE102015119473A1 (de) * 2015-11-11 2017-05-11 Phoenix Contact Gmbh & Co. Kg Steckkontakt
DE202016105003U1 (de) * 2016-09-09 2016-09-23 Andreas Veigel Steckverbinder
JP6953919B2 (ja) * 2017-09-04 2021-10-27 株式会社デンソー プレスフィット端子及び電子装置
DE102019112697A1 (de) 2019-05-15 2020-11-19 Andreas Veigel Drahtverbindungselement
US11431141B1 (en) 2019-08-06 2022-08-30 Interplex Industries, Inc. Method of manufacturing a press-fit contact
DE202020105848U1 (de) 2020-10-13 2022-02-10 Andreas Veigel Drahtverbindungselement
DE202020107455U1 (de) 2020-12-22 2022-03-29 Andreas Veigel Leiterplattensteckverbinder
DE202022102403U1 (de) 2022-05-03 2022-05-23 Andreas Veigel Steckverbinder

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015014553A1 (de) 2015-11-11 2017-05-11 Andreas Veigel Elektrisches Kontaktelement zum Einsetzen in eine metallische Bohrung

Also Published As

Publication number Publication date
JP4938663B2 (ja) 2012-05-23
ES2325377T3 (es) 2009-09-02
WO2005122337A1 (fr) 2005-12-22
DE502005007322D1 (de) 2009-07-02
KR100907966B1 (ko) 2009-07-16
EP1754285B1 (fr) 2009-05-20
US7891992B2 (en) 2011-02-22
JP2008502114A (ja) 2008-01-24
KR20070037611A (ko) 2007-04-05
US20070218717A1 (en) 2007-09-20

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