EP1700516B1 - Ensemble comprenant un element de contact - Google Patents

Ensemble comprenant un element de contact Download PDF

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Publication number
EP1700516B1
EP1700516B1 EP05729084A EP05729084A EP1700516B1 EP 1700516 B1 EP1700516 B1 EP 1700516B1 EP 05729084 A EP05729084 A EP 05729084A EP 05729084 A EP05729084 A EP 05729084A EP 1700516 B1 EP1700516 B1 EP 1700516B1
Authority
EP
European Patent Office
Prior art keywords
contact element
circuit board
arrangement according
conductor
connection
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.)
Not-in-force
Application number
EP05729084A
Other languages
German (de)
English (en)
Other versions
EP1700516A1 (fr
Inventor
Harald Schmid
Hermann Rappenecker
Wilhelm Weisser
Ralf-Michael Sander
Alexander Hahn
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.)
Ebm Papst St Georgen GmbH and Co KG
Original Assignee
Ebm Papst St Georgen GmbH and Co KG
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 Ebm Papst St Georgen GmbH and Co KG filed Critical Ebm Papst St Georgen GmbH and Co KG
Publication of EP1700516A1 publication Critical patent/EP1700516A1/fr
Application granted granted Critical
Publication of EP1700516B1 publication Critical patent/EP1700516B1/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

Definitions

  • the invention relates to an arrangement with a printed circuit board, which is provided with at least one conductor track and a contact element for producing an electrical connection between an electrical conductor and a predetermined conductor track on this circuit board.
  • a predetermined trace which is located on a printed circuit board, mechanically and electrically safe with an electrical conductor coming from the outside.
  • This electrical conductor can, for. B. for power supply, and in this case may occur during operation of the vehicle no interruption of the power supply.
  • This connection can also serve for connection to the electric motor of a safety-relevant application, for. B. with a motor which is controlled by the circuit board.
  • This can z. B. be an application in which a movement is electrically controlled (x-by-wire). Again, a reliable connection throughout the life of the motor vehicle, aircraft, ship or the like. Required.
  • DE 101 57 113 relates to an arrangement with a printed circuit board provided with at least one conductor track and a contact element for contacting an electrical conductor, which serves for connection to this printed circuit board.
  • the circuit board has continuous recesses in the region of a conductor track.
  • the contact element has a base part, provided thereon legs for pressing in recesses of the circuit board and a contact tongue, which is articulated resiliently on the base part and is designed for contacting the electrical conductor, wherein the pressing of the legs in the recesses a mechanical and electrical connection with the conductor track causes.
  • the invention provides a reliable mechanical and electrical connection between the printed circuit board and the contact element, since the legs in the recesses of the Printed circuit board to be pressed (press-fit). These recesses are electrically connected via their metallization with the conductor tracks of the circuit board and the circuit located there, and they are electrically and mechanically connected by pressing the legs of the contact element. The latter in turn allows a reliable connection with the coming from the outside electrical conductor.
  • the contact element is therefore already electrically connected by the press-fitting with the predetermined conductor track, and in addition one obtains a flat solder joint between it and the conductor track.
  • a solder joint is produced between the contact element and the conductor track, ie. H.
  • the solder can reach all desired locations.
  • These solder joints also form, in addition to the mechanical and electrical connection created by the press-in technique, a secure electrical connection and support the mechanical connection created by the press-fitting. Despite cost-optimal processes, this provides a high level of functional safety of the connection between the contact element and the printed circuit board / conductor track, namely electrically and mechanically.
  • Fig. 1 shows a circuit board 20 on which a conductor 22 is located, which is usually made of tinned copper. Above the conductor track 22, three holes 24, 26, 28 are provided in Fig. 1, and below it two holes 30, 32nd
  • the five legs 34, 36, 38, 40, 42 of a contact element 44 are pressed into these five holes 24 to 32.
  • the contact element 44 is usually made of a copper alloy, or of copper, brass or the like.
  • the conductor track 22 is largely adapted to the shape of the contact element 44 in order to enable a large-area soldering.
  • the legs 34, 36, 38 preferably have an identical shape.
  • the leg 38 has a free end 37, and has a reduced width 39 in the region of this free end 37, so that it can be easily inserted and pressed into the opening 28 when the circuit board 20 is loaded.
  • the leg 38 has a width 41 which is dimensioned such that it must be pressed into the opening 28, d. H. its width 41 exceeds the diameter D (Fig. 1) of the bore 28, so that during assembly receives a press fit, which gives a good mechanical connection.
  • the holes 24 to 32 are metallized at least at one end, z. B. with copper to get a good press-fit and thus a good mechanical and also electrically conductive connection.
  • the contact element 44 may have two legs 34, 36, 38 on its upper side in FIG. 2, and two legs 40, 42 on its lower side. All the legs are electrically and mechanically connected to a base part 46, which in FIG. 2 looks like an inverted U and has two legs 48, 50 and a base 52 which these thighs connects. But it can also be only one or two legs.
  • a spring tongue 54 is punched out, which is formed integrally with the base 52 at its upper end in Fig. 2.
  • the spring tongue 54 has at its left in Fig. 3 part 56, where it rises sharply and merges into a slowly sloping portion 58, which leads to a contact point 60 and from 62 slowly rises again, so that in Fig. 3 shows an insertion opening 64 on the right, into which a dash-dotted lines indicated sheet metal part 66 can be inserted, for. B. for electrical connection to a (not shown) motor to be controlled by the circuit board 20, or for connection to a power supply or with any device.
  • the base member 46 has left and right each have a highly curved cheek 70 and 72.
  • the cheek 70 is formed on the leg 48, the cheek 72 on the leg 50.
  • These cheeks 70, 72 serve as lateral guide members for the sheet metal part 66 during its assembly.
  • the circuit board 20 Before pressing the contact element 44, the circuit board 20 is printed at the required locations with solder paste. Subsequently, the contact element 44 is pressed into the circuit board 20, wherein a portion of the solder paste in recesses 49 of the contact element 44 passes and is stored in these recesses.
  • the electronic components are mounted in the usual way on the previously printed solder paste, and after this is done, the circuit board is transported through a reflow oven, where the soldering of all components takes place.
  • Fig. 1 it should be noted that the conductor 22 is adapted to the shape of the contact element 44, as is apparent from a comparison of Figs. 1 and 2 directly. This achieves large-area soldering.
  • recesses 49 are provided in the base in this part in which the solder paste is partially pressed so that when soldering in the reflow oven enough solder paste for Is available to get a proper solder joint. These recesses 49 thus serve as a reservoir for the solder paste.
  • connection arrangement 44 is electrically connected securely to the conductor track 22.
  • the sheet metal part 66 for the electrical connection can, for. B. have a width of 0.8 cm. It preferably has a recess into which a wart or tongue or the like provided on the spring tongue 54 engages during assembly in order to enable secure mechanical locking between the spring tongue 54 and the sheet metal part 66, which is also useful during assembly.
  • the sheet metal part 66 is attached to two lateral areas, e.g. at the points 76, 78, welded by welding by means of a laser non-contact (so-called laser points).
  • This makes it possible to produce the welded connection on an already equipped printed circuit board 20 without its electrical components being damaged or destroyed by external voltages.
  • FIG. 5 shows a variant of FIG. 3. Identical or equivalent parts as in FIG. 3 are therefore designated by the same reference numerals.
  • a disadvantage of Fig. 3 may be that during assembly of the contact element 44, a gap between this and the circuit board 20 is formed, which could hinder the formation of a secure solder joint. The reason is that the legs 34 to 42 in the right Angle down are bent, which inevitably creates a bending radius, which can cause the gap described during pressing.
  • FIG. 5 allows a full support of the contact element 44 on the circuit board 20.
  • the legs are first bent up and then bent by 180 °. This is illustrated by the example of the legs 34 'and 40'.
  • the leg 34 ' is bent at the point 57 in the upward direction, then makes a bend at 180 ° by 180 °, wherein the radius of this bend may possibly be made very small, and goes from there at 61 vertically downwards.
  • the same shape, but mirror-image can be found in the leg 40 '.
  • the base part 46 (legs 48, 50 and base 52) can rest on the printed circuit board so that an excellent solder joint results in the reflow oven, because the solder reliably fills the entire gap between the contact element 44 and the conductor track 22 .
  • the recesses 49 which were described in Fig. 2, are very advantageous and are therefore used in the same way in the variant of FIG. 5.
  • Fig. 6 shows approximately a scale of 10: 1 a three-dimensional view of a contact element 80 which is constructed similar to the contact element 44 of FIG. 1 to 5, but only four legs has. It has a base portion 82 with two longitudinal legs 84, 86 connected on one side by a base 87. From the leg 84 two legs 88, 90 are bent and from the leg 86 two legs 92, 94th
  • a resilient contact tongue 96 is punched out and shaped in the manner shown in order to insert an electrical conductor, for. As a flat metal part, and to securely hold this flat metal part in the inserted position.
  • FIG. 7 shows the attachment of a metal strip 66 serving as an external electrical conductor to the contact element 80.
  • the latter is fastened on a printed circuit board 20 in the manner described above, wherein the printed conductor 22 (see Fig. 1) is not shown here for the sake of simplicity.
  • the sheet metal part 66 is inserted between the base part 82 and the resilient tongue 96.
  • the latter has on its sheet metal part 66 side facing a wart 97, the hollow top in Fig. 7 is visible.
  • the sheet metal part 66 has a corresponding (not shown) recess, and if it is inserted properly, the wart 97 engages in this recess and thereby holds the sheet metal part 66 captive firmly.
  • the sheet metal part 66 is welded in its designated in Fig. 7 with 100 area by laser spot welding to the base part 82.
  • the attachment to a printed circuit board 20 is carried out in the same manner as described in FIGS. 1 to 5 for the first embodiment, d. H. by means of an interference fit in holes of the printed circuit board, as shown in Fig. 7, and in addition by corresponding solder joints.
  • the legs 88, 90, 92, 94 may for this purpose have at their free ends a slightly reduced width to facilitate mounting in the holes of the circuit board.
  • connection component a obtains its security by the combination of a press-fit operation, which causes predominantly a mechanical, but also an electrical connection, with a soldering process in which the low-resistance electrical connection is in the foreground, but also a mechanical connection is produced.
  • connection component b obtains its security by welding the flat conductor to the contact element, wherein the engagement of the conductor, and the spring force on the contact tongue, provide additional redundancy and facilitate assembly.
  • the invention gives an electrical connection of great security, it allows to connect the trace of a circuit board safely and reliably with an external component in which high currents flow, for. B. with an electric motor.
  • This secure and reliable connection is made possible by a press-fit connection between the printed circuit board and the contact element and by a solder connection to the conductor track 22, and by the non-contact welds 76, 78, as described in FIG.
  • the assembly is extremely simple and can be easily automated, which is facilitated by the snapping between the sheet metal part 66 and spring tongue 54.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
  • Multi-Conductor Connections (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Finger-Pressure Massage (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Claims (12)

  1. Dispositif comprenant une carte à circuit imprimé (20) pourvue d'au moins une piste conductrice (22) et un élément de contact (44) servant à établir le contact avec un conducteur électrique (66), lequel sert à la connexion avec cette carte à circuit imprimé (20), lequel dispositif présente les caractéristiques suivantes :
    la carte à circuit imprimé (20) présente au niveau d'une piste conductrice prédéfinie (22) des évidements (24, 26, 28, 30, 32) ;
    l'élément de contact (44 ; 80) présente une pièce de base (46 ; 82) et des pattes (34, 36, 38, 40, 42 ; 88, 90, 92, 94) prévues dessus destinées à être enfoncées dans des évidements prédéfinis (24 à 32) de la carte à circuit imprimé (20) ;
    l'élément de contact (44 ; 80) est relié électriquement à la piste conductrice prédéfinie (22) par une brasure (74) au niveau de sa pièce de base (46 ; 82) ;
    l'élément de contact (44 ; 80) présente une languette de contact (54 ; 96) qui est articulée élastiquement sur la pièce de base (46 ; 82) et est conçue pour établir le contact avec le conducteur électrique (66) ;
    les évidements (24, 26, 28, 30, 32) sont des évidements traversants au niveau de la piste conductrice prédéfinie (22),
    caractérisé en ce que
    l'enfoncement des pattes (34, 36, 38, 40, 42 ; 88, 90, 92, 94) dans les évidements prédéfinis (24 à 32) produit une liaison mécanique et une liaison électrique avec la piste conductrice prédéfinie (22), et
    l'élément de contact (44 ; 80) est relié au conducteur électrique par une soudure (76, 78).
  2. Dispositif selon la revendication 1, dans lequel il est prévu au moins un organe de guidage latéral (70, 72) pour le conducteur électrique (66) sur l'élément de contact (44).
  3. Dispositif selon la revendication 2, dans lequel l'organe de guidage latéral (70, 72) est conçu d'une seule pièce avec la pièce de base (46).
  4. Dispositif selon l'une des revendications précédentes, dans lequel au moins une partie des pattes (34 à 42) présente une largeur réduite (39) au niveau de l'extrémité libre (38).
  5. Dispositif selon l'une des revendications précédentes, dans lequel le conducteur électrique (66) est introduit entre la languette de contact (54) et la pièce de base (46) et relié par une soudure (76, 78) à au moins un élément de l'ensemble, auquel ensemble appartiennent la pièce de base (46) et la languette de contact (54).
  6. Dispositif selon la revendication 5, dans lequel la soudure (76, 78) est réalisée par soudage au laser.
  7. Dispositif selon l'une des revendications précédentes, dans lequel le conducteur électrique (66) est réalisé sous forme de conducteur plat.
  8. Dispositif selon la revendication 7, dans lequel le conducteur plat (66) est conçu pour l'enclenchement mécanique avec la languette de contact (54 ; 96).
  9. Dispositif selon la revendication 8, dans lequel la languette de contact (54 ; 96) présente une saillie (97) et le conducteur plat (66) est pourvu d'un évidement prévu pour l'engagement de cette saillie.
  10. Dispositif selon l'une des revendications précédentes, dans lequel l'élément de contact (44 ; 80) est pourvu d'au moins un évidement (49), lequel est conçu pour, lors de la préparation de l'opération de brasage, recevoir de la pâte à baser à la manière d'un réservoir.
  11. Dispositif selon la revendication 10, dans lequel ledit au moins un évidement (49) est formé dans une région de l'élément de contact (44 ; 80) qui sert au brasage à plat avec la piste conductrice prédéfinie (22).
  12. Dispositif selon l'une des revendications précédentes, dans lequel la liaison entre la pièce de base et au moins une patte présente une pièce de liaison (59) qui présente un écart avec la carte à circuit imprimé (20) sur une partie de la distance entre patte (61) et pièce de base (70).
EP05729084A 2004-04-08 2005-03-26 Ensemble comprenant un element de contact Not-in-force EP1700516B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004005963 2004-04-08
PCT/EP2005/003203 WO2005101933A1 (fr) 2004-04-08 2005-03-26 Ensemble comprenant un element de contact

Publications (2)

Publication Number Publication Date
EP1700516A1 EP1700516A1 (fr) 2006-09-13
EP1700516B1 true EP1700516B1 (fr) 2007-08-01

Family

ID=34638921

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05729084A Not-in-force EP1700516B1 (fr) 2004-04-08 2005-03-26 Ensemble comprenant un element de contact

Country Status (6)

Country Link
US (1) US7500857B2 (fr)
EP (1) EP1700516B1 (fr)
JP (1) JP4533930B2 (fr)
AT (1) ATE369031T1 (fr)
DE (2) DE502005001140D1 (fr)
WO (1) WO2005101933A1 (fr)

Cited By (1)

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DE102015201314A1 (de) * 2015-01-27 2016-07-28 Schaeffler Technologies AG & Co. KG Aktuator mit Leistungselektronik

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DE102009005949A1 (de) * 2009-01-16 2010-07-22 Würth Elektronik Ics Gmbh & Co. Kg Steckbuchsenelement
DE102009053426B4 (de) 2009-11-19 2020-03-19 Pierburg Gmbh Elektrisches Kontaktelement
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
US8657636B2 (en) * 2012-03-26 2014-02-25 Dinkle Enterprise Co., Ltd Metal clamp
DE102012223077A1 (de) * 2012-12-13 2014-06-18 Robert Bosch Gmbh Kontaktanordnung für einen mehrlagigen Schaltungsträger
DE102015112785B4 (de) * 2015-08-04 2023-07-06 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Elektrische Kontaktierungsanordnung
CN108758567A (zh) * 2018-07-02 2018-11-06 江苏金顺光电科技有限公司 电源线夹持式led灯泡电源板
DE102021115583A1 (de) 2021-06-16 2022-12-22 Te Connectivity Germany Gmbh Elektrische Hochvolt-Leiterplatten-Steckkontakteinrichtung sowie leistungselektrischer Leiterplatten-Anschluss

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Also Published As

Publication number Publication date
DE202005005354U1 (de) 2005-06-02
US7500857B2 (en) 2009-03-10
US20070232096A1 (en) 2007-10-04
JP4533930B2 (ja) 2010-09-01
JP2007533069A (ja) 2007-11-15
EP1700516A1 (fr) 2006-09-13
DE502005001140D1 (de) 2007-09-13
WO2005101933A1 (fr) 2005-10-27
ATE369031T1 (de) 2007-08-15

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