EP2858180A1 - Élément de contact électrique pour une connexion enfichable dotée d'une carte de circuit imprimé - Google Patents

Élément de contact électrique pour une connexion enfichable dotée d'une carte de circuit imprimé Download PDF

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Publication number
EP2858180A1
EP2858180A1 EP14003404.2A EP14003404A EP2858180A1 EP 2858180 A1 EP2858180 A1 EP 2858180A1 EP 14003404 A EP14003404 A EP 14003404A EP 2858180 A1 EP2858180 A1 EP 2858180A1
Authority
EP
European Patent Office
Prior art keywords
spring legs
contact element
contact
spring
bore
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
EP14003404.2A
Other languages
German (de)
English (en)
Other versions
EP2858180B1 (fr
Inventor
Uberto Gamaggio
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
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2858180A1 publication Critical patent/EP2858180A1/fr
Application granted granted Critical
Publication of EP2858180B1 publication Critical patent/EP2858180B1/fr
Not-in-force 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
    • 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

Definitions

  • the invention relates to a contact element for producing a plug connection with a bore having an inner wall, in particular for connection to a printed circuit board, wherein the contact element is designed as a contact post with a spring element integrally attached thereto, which has two mutually parallel spring legs.
  • Such a contact element which has an elastic deformable plane, which makes it suitable for insertion through a through hole in a printed circuit board.
  • the elastically deformable surface comprises two mutually parallel spring legs, which are interconnected by a deformable bridge. This is intended to ensure that the spring legs rest against the inner wall of the bore of the circuit board.
  • the deformable bridge comprises in cross-section a flat portion which extends at right angles to the two opposite spring legs and has an upper and a lower surface. From the opposite ends of the upper surface extend outwardly two oblique areas adjacent to the spring legs.
  • this object is achieved in a contact element of the type mentioned above in that the spring legs in a first axis forming plug-in direction are separated by a over its entire length the same width gap having, wherein the spring legs have transversely to the insertion direction and transverse to the opening formed by the slot in a first axis a convexly curved outer contour, and that the spring legs during a plugging operation in the bore in a direction transverse to the plug-in direction deformable and partially rotatable.
  • the width of the spring leg is dimensioned so that when inserting the contact element into a hole in a circuit board, the spring legs through the wall of the bore, d. H. in the spring area of the spring legs, be compressed and compress.
  • the diameter of the bore is so narrow in at least one region in a spring plane, that the existing of an electrically conductive material contact element can only be resiliently inserted at rest with its spring element, wherein the spring legs inward, d. H. to the gap between them, spring down.
  • Such a Kaltlötharm has a good electrical conductivity and a good thermal conductivity.
  • a good electrical connection is made with the inner wall of the bore, wherein the Torsional movement of the spring leg at least in its last phase represents a rolling motion on the inner wall of the bore.
  • the wall of the bore preferably remains rigid and undamaged. This can create a very advantageous electrical connector between the contact element and the circuit board.
  • the spring legs which spring in the gap formed between them, a very precisely metered spring force and a precisely predetermined spring travel are achieved.
  • the resilient mounting within the bore ensures high contact forces and a permanently good contact. Due to the fact that the spring forces continue to act in the mated connection once produced in the bore, the good contact properties are also of long service life even in the case of adverse environmental influences.
  • a particular advantage of the invention is that the outer contours or individual areas of the outer contours of the spring legs completely or at least over a wide circumference cling tightly to the inner contour of the bore and form a cold soldering with the inner contour, so that the spring legs gas-tight on the inner contour abut and gas-tight contact zones with the wall of the bore form. This prevents the penetration of oxygen and moisture into these areas so that corrosion does not occur. Only the fact that these areas remain corrosion-free, the required electrical conductivity is permanently ensured.
  • the contact element is preferably made of a copper alloy, in particular of a copper wrought alloy. Especially spring materials are suitable. .
  • the spring legs in the first axis in Toward each other have a trough-shaped depression. Through the trough-shaped depression divided by the gap it is achieved that the spring legs have a high degree of elasticity and, when they are inserted into the bore of the printed circuit board, form a large contact outer area with the bore of the printed circuit board. This assists in the production of a fixed connection to the wall of the bore to the printed circuit board by a cold solder joint.
  • the recess of the spring legs forms a cross-sectionally substantially trapezoidal recess.
  • the spring legs in cross-section transversely to the direction of the first axis each have quadrangular contours with rounded corners.
  • spring legs in cross-section in each case to a second and a third axis diagonal direction on the sides facing away from each other, d. H. at the outer edges, each having a trough-shaped recess.
  • the fact that the spring legs are rounded in each case with advantage at their insertion-side tips in the insertion direction, they can be easily inserted into the bore of a circuit board. It allows a gentle introduction into the circuit board, so that it is spared. As a result, the tracks on the circuit board and surrounding components are little burdened. A buckling of the press-in zone of the circuit board is avoided.
  • the contact element according to the invention has a high elastic deformation proportion, which is higher than that of contact elements according to the prior art.
  • the gap protrudes counter to the insertion direction over the length of the trough in the direction of the contact post. Also by this measure, the elasticity of the spring legs is supported.
  • the legs in the first direction approximately in the middle of their length each have a wider contour which tapers toward both the contact post and its tips.
  • the trough formed between the legs extends in the first direction, i. H. in the plug-in direction, flatter in the direction of the contact post and also flat in the direction of the tips of the legs, so there rises slightly.
  • a galvanic coating is preferably used.
  • a particularly low insertion force is ensured in the circuit board and formed by the torsional force of the individual legs an optimal contacting surface for printed circuit board hole.
  • the open tips of the spring legs allow a flat spring characteristic with a particularly gentle and low insertion force when introduced into a bore.
  • the contacting made possible according to the invention is based on a flexible press-in zone, as formed by the two spring legs.
  • the contact element provided according to the invention has a reduced scattering of the spring force.
  • the shape of the spring legs results in a uniform distribution of the Hertzian stresses and the deformations in the contact zones; in particular, these are much smaller than contact elements according to the prior art.
  • good self-concentration in the press-in zone is achieved by the selected shape of the spring leg with the trough-shaped recess.
  • the shape of the spring leg also ensures that a large conductor cross-section is present with a large deformation path. This results in a high current carrying capacity with low current heating.
  • the contact element has a compact design that supports miniaturization.
  • a contact element 1 ( Fig. 1 to 6 ) comprises at its upper end a contact post 2, which in turn carries at its lower end two integrally connected with the contact post 2 and separated by a narrow gap 3 spring legs 4, 5.
  • the gap 3 extends in the direction of a Axis A and preferably has the same width over its entire length; the gap 3 is formed during punching by a shearing process.
  • the spring legs 4, 5 have on their outer sides in each case convexly curved outer contours 6, 7.
  • the spring legs have an axisymmetric, the gap 3 cross trough-shaped recess or trough 8, which extends substantially over the entire length of the spring leg 4, 5 or the length of the gap 3, but also a greater or lesser length than the gap 3 can have.
  • the spring legs 4, 5 At their tips 16 and 17, the spring legs 4, 5 each have a rounding.
  • the recess 8 forms in cross section ( Fig. 2 ), ie transverse to the direction of the axis A, a substantially trapezoidal recess 9. Laterally of the recess form the spring legs 4, 5 each quadrangular contours 10, 11 and 12, 13, each having rounded corners. In a diagonal direction relative to an axis B and an axis C, a depression 14 is present between the quadrangular contours 10 and 12, and a depression 15 is provided between the contours 11 and 13.
  • the trough 8 flattens off both in the direction of the contact post 2 and in the direction of the tips 16, 17.
  • contours 12, 13 are finally a large area on the inner wall of the bore 21 and make a wide contact zone with the bore 21 ago, so that excellent electrical conductivity and thermal conductivity during the transition from the spring legs 4, 5 are generated to the bore 21.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
EP14003404.2A 2013-10-02 2014-10-02 Élément de contact électrique pour une connexion enfichable dotée d'une carte de circuit imprimé Not-in-force EP2858180B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201320008679 DE202013008679U1 (de) 2013-10-02 2013-10-02 Elektrisches Kontaktelement für eine Steckverbindung mit einer Leiterplatte

Publications (2)

Publication Number Publication Date
EP2858180A1 true EP2858180A1 (fr) 2015-04-08
EP2858180B1 EP2858180B1 (fr) 2017-04-12

Family

ID=51661853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14003404.2A Not-in-force EP2858180B1 (fr) 2013-10-02 2014-10-02 Élément de contact électrique pour une connexion enfichable dotée d'une carte de circuit imprimé

Country Status (2)

Country Link
EP (1) EP2858180B1 (fr)
DE (1) DE202013008679U1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0138309A1 (fr) * 1983-08-04 1985-04-24 System Kontakt Gesellschaft für elektronische Bauelemente mbH Broche de contact électrique flexible, enfichable dans un trou d'une plaquette de circuits
DE4132996A1 (de) * 1991-05-16 1992-11-19 Telefunken Systemtechnik Kontaktstift fuer leiterplatten
EP0831558A2 (fr) 1996-09-20 1998-03-25 Molex Incorporated Broche à insertion à force pour circuit imprimé
JP2000332370A (ja) * 1999-05-21 2000-11-30 Sanwa Denki Kogyo Co Ltd コンプライアント端子
US6231402B1 (en) * 1998-04-14 2001-05-15 Nec Corporation Press-in contact and manufacturing method thereof
US6338632B1 (en) * 2000-07-05 2002-01-15 Hon Hai Precision Ind. Co., Ltd. Compliant, press fit electrical contact having improved retention

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004028202B4 (de) * 2004-06-09 2006-10-05 Veigel, Andreas, Ing.(grad.) Einpresskontakt
JP5541305B2 (ja) * 2012-03-16 2014-07-09 第一精工株式会社 プレスフィット用コネクタ端子

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0138309A1 (fr) * 1983-08-04 1985-04-24 System Kontakt Gesellschaft für elektronische Bauelemente mbH Broche de contact électrique flexible, enfichable dans un trou d'une plaquette de circuits
DE4132996A1 (de) * 1991-05-16 1992-11-19 Telefunken Systemtechnik Kontaktstift fuer leiterplatten
EP0831558A2 (fr) 1996-09-20 1998-03-25 Molex Incorporated Broche à insertion à force pour circuit imprimé
US6231402B1 (en) * 1998-04-14 2001-05-15 Nec Corporation Press-in contact and manufacturing method thereof
JP2000332370A (ja) * 1999-05-21 2000-11-30 Sanwa Denki Kogyo Co Ltd コンプライアント端子
US6338632B1 (en) * 2000-07-05 2002-01-15 Hon Hai Precision Ind. Co., Ltd. Compliant, press fit electrical contact having improved retention

Also Published As

Publication number Publication date
DE202013008679U1 (de) 2015-01-05
EP2858180B1 (fr) 2017-04-12

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