EP1754285B1 - Einpresskontakt - Google Patents

Einpresskontakt Download PDF

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Publication number
EP1754285B1
EP1754285B1 EP05750198A EP05750198A EP1754285B1 EP 1754285 B1 EP1754285 B1 EP 1754285B1 EP 05750198 A EP05750198 A EP 05750198A EP 05750198 A EP05750198 A EP 05750198A EP 1754285 B1 EP1754285 B1 EP 1754285B1
Authority
EP
European Patent Office
Prior art keywords
press
contact
bore
region
limbs
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.)
Active
Application number
EP05750198A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1754285A1 (de
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.)
Veigel Andreas
Original Assignee
Veigel Andreas
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 Veigel Andreas filed Critical Veigel Andreas
Publication of EP1754285A1 publication Critical patent/EP1754285A1/de
Application granted granted Critical
Publication of EP1754285B1 publication Critical patent/EP1754285B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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-fit.
  • press-fit contacts are used to produce electrical, solder-free press-fit contacts, which are for this purpose pressed in particular in fürmetallographe holes of printed circuit boards.
  • press-fit contacts with elastic press-in areas
  • punching methods can be used.
  • Such press-in contacts have two spaced-apart legs in the press-in area.
  • the legs of the press-fit are made by stamping into a solid material, wherein a correspondingly large material surface is required for punching the hole between the legs. Accordingly, the press-fit contacts thus produced generally have a flat, flat shape. When these contacts are introduced into the circular bores, substantially two contact surfaces of the press-fit contact offset by 180 ° from one another on the wall of the bore are formed, which are formed by the narrow sides of the press-fit contact.
  • the US Pat. No. 3,846,741 describes press-fit contacts for insertion into holes in printed circuit boards made by bending metal strips.
  • a press-in contact of two superimposed metal strips may be formed, whose lower ends are bent so that they form discrete legs, which are pressed under pressure into the respective bore.
  • a contact element for printed circuit boards which has a pin part which consists of two mutually spaced arms and a solid, adjoining the arms body.
  • the arms have at least four longitudinally extending outer edges, which are movable in pairs against a restoring force to each other.
  • the US 5,145,407 describes a one-piece contact element, which has a solid head part, on which two mutually spaced arms are provided. When pressing the arms into a hole, the arms are pressed together. By the case exerted spring force of the arms, the contact element is held in the bore.
  • the invention has for its object to provide a press-fit, on the one hand cost-effective and efficient to produce and on the other hand has good and reproducible mechanical and electrical contact properties.
  • the press-fit contact according to the invention comprises a contact body and two limbs formed integrally therewith, which are separated by a parting surface produced by chipless machining and are expanded within a press-in area and spaced apart from one another.
  • a subsequent to the press-in tip is provided, which are formed by the converging free ends of the legs.
  • the press-in contact has a connection region which is formed by the contact body and adjoining segments of the legs, which lie close to one another. At this connection area then close to the press-fit forming, mutually expanded segments of the legs. With the segments forming the connection region of the legs an efficient tolerance compensation is created. This is done by the stiffness of the press-in contact is reduced in the connection area by the separation of the legs in the connection area, which ensures that even with tolerance-related axial offset between press-fit and bore the allowable forces on the circuit board and the press-in during the pressing process are not exceeded.
  • the press-fit contact according to the invention can be produced simply and efficiently.
  • legs are incorporated by means of a chipless machining process in a contact body forming a solid part, which open out at the remaining segment of the contact body.
  • the legs are made by shearing the contact body. The subsequent widening of the legs in the press-in area then preferably takes place by means of a dome.
  • tools are used which not only allow processing of a single press-fit, but a simultaneous processing of several press-fit. This leads to an extremely efficient production of press-fit contacts.
  • Another significant advantage of the press-fit according to the invention is that the shape of the circular metallized hole of a printed circuit board, in which the press-fit is pressed, can be adjusted, resulting in a particularly high quality of contact, which in particular also largely insensitive to Tolerances of the individual components of the contact is.
  • the contact body of the press-in contact has a square cross-section. Since the limbs are produced by cutting or, in particular, shearing one end of the contact body, the sum of the cross sections of the limbs in the press-in region corresponds again, at least approximately, to the quadratic surface of the contact body.
  • This square cross-sectional area of the legs in the press-fit region represents a geometrically optimal adaptation to the circular contour of the bore.
  • the conductor cross section can amount to approximately 60 to 80% of the bore cross section.
  • the outer edges of the legs of the press-in contact at least in the press-in each have a drawn or embossed radius. These radii form four large-scale, by clearances clearly limited gas-tight connections with the wall of the bore, whereby a corrosion-resistant, high-current loadable contact between the press-in contact and bore is obtained.
  • the free ends when press-fitted into the bore, protrude beyond the underside of the bore. Then they can be bent and pressed against the lower edge of the bore, whereby a positive connection of the bent tip with the circuit board is formed.
  • the connection formed in this way corresponds to a riveted connection and leads to a very good hold of the press-fit contact in the bore.
  • press-fit contacts can also be used as pure mechanical fixing elements without electrical function in this way.
  • the press-fit region of the press-fit contact according to the invention has good elastic properties due to its shape. Consequently, instead of the commonly used materials such as copper alloys, the press-fit contact may in particular also consist of brass, ie a material with poor spring properties but very high conductivity values.
  • FIGS. 1a and 1b show an embodiment of a press-fit 1.
  • FIG. 1a shows a side view of the press-fit 1
  • Figure 1 b a cross section along the line A in FIG. 1a
  • the press-fit 1 can, as in FIG. 2 shown schematically, are pressed into a Wegmetallinstrumente hole 2 of a printed circuit board, wherein the bore 2 has a circular cross-section.
  • the press-in contact 1 consists in the present case of a brass part.
  • the press-fit 1 a contact body 3, on the underside of two legs 4 open freely.
  • the limbs 4 are formed by cutting or shearing a separation along a separation surface is introduced into a segment of the contact body 3, so that the legs 4 connect to the remaining solid segment of the contact body 3.
  • the legs 4 are thus formed integrally with the contact body 3.
  • the legs 4 are identical and symmetrical to the formed in the longitudinal direction of the press-in contact 1 extending plane of symmetry.
  • the contact body 3 has a rectangular, in the present case a square cross-section which is constant over its length. Since the legs 4 are formed by shearing or cutting from the contact bodies 3, these each have a constant over their length rectangular cross section, wherein the cross sections complement the square cross section of the contact body 3. Only in the region of the free ends of the legs 4 whose cross-sections can be slightly tapered to facilitate the insertion of the press-fit 1 in the bore 2.
  • the press-in contact 1 is as out FIG. 1a can be seen, divided into different areas, namely a connection region 5 at its upper end, an adjoining press-in area 6 and a tip 7 at its lower end.
  • connection region 5 which serves for the electrical connection of external units to the press-fit contact 1, consists of the solid contact body 3 and the adjoining upper segments of the legs 4 which abut each other separated by a separating surface segment 8.
  • the connection region 5 is completed by the region of the legs 4, which diverge from the separation surface segment 8 and thus enclose a gap in the form of a gusset 9.
  • the legs 4 are widened by means of suitable tools and are at a greater distance from each other.
  • the legs 4 form an elastic press-in area 6.
  • the inner sides have a smoothed surface in this area.
  • the legs 4 in the region of the press-in area 6 form an eyelet, the outer dimension of which is greater than the diameter of the bore 2 into which the press-fit contact 1 is to be pressed.
  • the gap between the legs 4 in the press-in area 6 forms a defined widening region 10.
  • the tip 7 of the press-fit contact 1 connects.
  • the tip 7 is formed by the free ends of the legs 4.
  • the legs 4 run towards each other at predetermined angles of inclination and enclose a gap in the form of a gusset 11.
  • the free ends of the legs 4 run substantially parallel.
  • the legs 4 are separated by a separating gap 12.
  • the outer edges of the legs 4 in the press-6 6 radii can have drawn or embossed radii 13 over their entire lengths.
  • the tip 7 of the press-in contact 1 is first introduced into the bore 2. Since the cross sections of the legs 4 are reduced in the region of the tip 7 and the free ends of the legs 4 converge, the outer dimension is smaller than the diameter of the bore 2, whereby a simple insertion of the tip 7 is ensured in the bore 2.
  • the press-in area 6 of the press-fit 1 is pressed into the bore 2, wherein the legs 4 are pressed against each other in the press-in 6 during pressing and, as in FIG. 2 shown lying in the hole 2.
  • the elastic properties of the press-fit 1 are improved to the effect that a tolerance compensation is created. This means that with it the stiffness of the press-fit 1 in the connection region 5 is reduced. This will not exceed the allowable forces on the circuit board and the press-in 6 during the press-in even with tolerance-induced axial offset between press-fit 1 and 2 hole, especially in multiple arrangements of press-fit contacts 1.
  • FIG. 2 shows the pressed into the hole 2 legs 4 in the press-in 6. Since the legs 4 are made 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 to this square cross-sectional area complement each other optimally the geometry of the circular bore 2 is adjusted. By the geometry of the legs 4 it is achieved that the contact forces F between press-fit contact 1 and bore 2 in the radial direction and rotationally symmetrical with respect to the center of the bore 2 act, as in FIG. 2 is shown. As a result, a torque-free, centric secure mounting of the press-fit 1 in the bore 2 is obtained. Furthermore, the radii 13 of the legs 4 form large, gas-tight contact surfaces 2a with the bore 2.
  • the contact surfaces 2a are clearly bounded by subsequent free spaces 2b, resulting in a defined surface pressure between press-fit 1 and the bore 2. In the free spaces 2b soiling and foreign layers can be displaced during pressing.
  • the sum of the contact surfaces 2a of the gas-tight connections produced in this way is generally greater than the cross-section of the press-fit 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-fit contact 1 pressed into the bore 2 projects slightly beyond the lower edge of the bore 2. If necessary, the exposed ends of the legs 4 can be bent and pressed against the edge of the bore 2, whereby a riveted joint is formed, which ensures a further improved mechanical support of the press-fit 1.
  • FIGS. 3 to 7 show the method for producing the press-fit 1 according to the FIGS. 1a and 1b ,
  • FIG. 3 shows the starting material for producing a press-fit 1, namely in the form of a contact body 3, which is a solid part of brass. This has in the present case, the contact body 3 a constant over its length square cross-section. The outer edges of the contact body 3 may have drawn or embossed radii 13.
  • FIGS. 4, 5 and 7 show cross-sectional representations of tools by means of which a press-fit contact 1 is produced by chipless machining processes from the contact body 3.
  • the tools are designed in such a way that a plurality of contact bodies 3 can be machined at the same time with these, so that in particular raster arrangements with a plurality of press-fit contacts 1 can be produced in particular.
  • tools for simultaneous processing of four contact bodies 3 are provided. In principle, the number of contact bodies 3 to be machined 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 a stamping mold 15 runs perpendicular to the plane of the drawing.
  • the stamping molds 15 are adapted to the cross sections of the contact body 3. Due to the rounded corners of the embossing molds 3, the outer edges of the contact body 3 are impressed with radii 13 in the press-in region 6 of the respective protruding press-fit contact 1.
  • each stamping mold 15 has at least one projection 15a with which a notch is introduced into the respective contact body 3.
  • the shearing tool 16 has receptacles 17 for the contact body 3 and an arrangement of shear punches 18a, b. These Form first shear stamp 18a, which is used to shear a contact body 3 in the plane of FIG. 5 are moved down, and second shear stamps 18b, which are moved upward.
  • Each contact body 3 is located in each case on a first and second shear punch 18a, b in the receptacle 17, wherein the longitudinal axis of the contact body 3 is perpendicular to the plane of the drawing.
  • first and second shear punch 18a, b By the opposite shear movements of acting on a contact body 3 first and second shear punch 18a, b, the lower portion of a contact body 3 is sheared to form two separated by a separating surface legs 4.
  • the obtained after a shearing contact body 3 with the two legs 4 is in FIG. 6 shown. Due to the formation of the shear punches 18a, b form the opening on the contact body 3 leg 4 a V-shaped arrangement.
  • the legs 4 of the contact body 3 are bent together so that they rest against each other again.
  • the pre-machined contact bodies 3 are introduced into receptacles 20 of the expansion tool 19.
  • the longitudinal axes of the contact body 3 mounted there are perpendicular to the plane of the drawing.
  • the receptacles 20 open out channels 21, in each of which a mandrel 22 is inserted to widen the legs 4 in the press-in region 6 of the press-fit 1. Since the legs 4 are pressed apart during the expansion by means of the mandrel 22, the widths of the receptacles 20 are greater than the width of the contact body 3, so that the legs 4 can escape laterally when pressing the mandrel 22.
  • the space between the legs 4 forming the widening region 10 in the press-in region 6 is determined by the shape of the mandrel 22.
  • the inner sides of the legs 4 are smoothed by machining with the mandrel 22.
  • the with the embossing tool 14 according to FIG. 3 stamped notch in the contact body 3 serves as an insertion aid for the mandrel 22.
  • the tools according to FIGS. 4, 5 . 7 is the press-fit 1 simple and efficient to produce. Further processing steps are not 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)
EP05750198A 2004-06-09 2005-05-31 Einpresskontakt Active EP1754285B1 (de)

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 (de) 2004-06-09 2005-05-31 Einpresskontakt und verfahren zu dessen herstellung

Publications (2)

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

Family

ID=34970230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05750198A Active EP1754285B1 (de) 2004-06-09 2005-05-31 Einpresskontakt

Country Status (7)

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

Families Citing this family (17)

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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
DE102013103818A1 (de) 2013-04-16 2014-10-30 Walter Söhner GmbH & Co. KG Verfahren zur Herstellung von Einpresskontakten, Einpresskontakt sowie Bauteilanordnung mit zumindest einem Einpresskontakt
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
DE102015014553A1 (de) 2015-11-11 2017-05-11 Andreas Veigel Elektrisches Kontaktelement zum Einsetzen in eine metallische Bohrung
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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Also Published As

Publication number Publication date
JP4938663B2 (ja) 2012-05-23
ES2325377T3 (es) 2009-09-02
WO2005122337A1 (de) 2005-12-22
EP1754285A1 (de) 2007-02-21
DE502005007322D1 (de) 2009-07-02
KR100907966B1 (ko) 2009-07-16
US7891992B2 (en) 2011-02-22
JP2008502114A (ja) 2008-01-24
KR20070037611A (ko) 2007-04-05
US20070218717A1 (en) 2007-09-20

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