EP2721695B1 - Éléments de mise en contact - Google Patents

Éléments de mise en contact Download PDF

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Publication number
EP2721695B1
EP2721695B1 EP12725386.2A EP12725386A EP2721695B1 EP 2721695 B1 EP2721695 B1 EP 2721695B1 EP 12725386 A EP12725386 A EP 12725386A EP 2721695 B1 EP2721695 B1 EP 2721695B1
Authority
EP
European Patent Office
Prior art keywords
contact
circuit board
contact spring
printed circuit
making
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
EP12725386.2A
Other languages
German (de)
English (en)
Other versions
EP2721695A2 (fr
Inventor
Rainer Kienzle
Bernd KILAST
Harald Eisenhardt
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2721695A2 publication Critical patent/EP2721695A2/fr
Application granted granted Critical
Publication of EP2721695B1 publication Critical patent/EP2721695B1/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

  • a contact spring for printed circuit boards is self-holding formed as a one-piece contact spring and comprises two spring legs and a base between the spring legs, for insertion into a breakthrough of a printed circuit board.
  • the holder of the contact spring on the circuit board is effected by a resilient engaging behind of the spring legs of the contact spring molded cam, which is ensured by appropriate design of the cam edge pressing the circuit board between the base and cam.
  • DE 296 17 905 U1 also refers to a printed circuit board with a contact spring.
  • an electrical connector for releasably contacting a circuit board with an electronic or electromechanical device comprising a contact spring having at least one contact surface for the releasable contact engagement.
  • DE-U-9205698.9 refers to contacting a loudspeaker located within a telephone station with a circuit board provided within the telephone station.
  • the contact spring disclosed here comprises two arms extending parallel to the printed circuit board. Along a linear contact point, the contact is shown. In one embodiment, free end portions of the arms extending parallel to the printed circuit board could be angled.
  • the contact carrier comprises a component-side carrier top side and a carrier underside and at least one conductor track or a number of through holes through which a contact element contacted with the conductor track is inserted, which projects beyond the carrier underside and serves to receive a plug contact element of the respective component.
  • the contact element lies with at least one contacted with the conductor contact strap on the carrier top.
  • the contact element comprises a terminal connected to the contact tab and over the underside of the carrier protruding clamping contact part for the respective plug-in contact element.
  • the contact element is preferably designed as a stamped and bent part and procure one piece.
  • DE 34 36 119 A1 refers to a contact spring element for contacting printed circuit boards.
  • an electrically conductive connection between a carrier part and a printed circuit board or a sheet metal part is made possible by means of a resiliently arranged on the edge of the carrier plate contact clip.
  • the integrally formed contact clip has a latchable foot with arranged thereon contact part with a plurality of opposite contact spring tabs for receiving therebetween the circuit board or the sheet metal part.
  • the foot part comprises, in the locked state, a receiving edge provided in the carrier part and engages via a spring lug in a latching opening of the carrier part arranged at a distance from the receiving edge.
  • an arrangement according to the preamble of claim 1 which comprises a printed circuit board with a cutout, in which a contacting element is arranged, and a contact pin. For making a contact while the contact pin is inserted into the contacting element.
  • various contacting possibilities for a printed circuit board are known from the prior art. These include Einpastepins, solder contacts, direct connectors, contact pads, conductive rubbers and the like.
  • An arrangement which comprises a printed circuit board and a contact pin and a contacting element, designed as a contact spring, with spring-trained contact spring legs which contact a contact surface of a contact pin.
  • the printed circuit board is provided with at least one printed circuit board cutout, in which the contacting element is arranged and between the printed circuit board, the contact pin and the contacting element, a plurality of electrically conductive contacts are formed, wherein the contact spring legs have bent ends having a bending edge or bending line with defined contact points, which form a contact with pads of the printed circuit board, wherein the contacting element has opposing contact spring legs, in each of which at least one contact spring tongue is formed, which is formed by slotting, wherein the at least one contact spring tongue has a bent end, which facilitates the insertion of the contact pin.
  • the at least one contact spring tongue has an embossing which electrically conductively contacts an end face of a printed circuit board cutout.
  • the contacting element is resilient and provides a plurality of defined contact points between the printed circuit board and the contacting element, such as the contact to be contacted by it.
  • the inventively proposed increase in the number of contact points on the one hand reduces contact resistance and on the other hand significantly improves the current carrying capacity of the invention proposed contacting element.
  • a more accurate positioning of the contacting element which permits a plurality of defined contact points or support lines with the surface and end sides of a printed circuit board, can be achieved with respect to the contact partner.
  • contact spring limbs extending essentially opposite one another extend in which at least one contact spring tongue is formed.
  • the oppositely formed contact spring legs of the invention proposed contacting element have at their upper end respectively bent Kunststofffederschenkelausstart. In these about 90 ° with respect to the contact spring leg angled Kunststofffederschenkelausuite Uber are arranged.
  • the bends can be provided, for example, by embossing defined contact points on a linearly extending bending edge in the contact spring leg outlet. This results in a contacting region extending on the underside of the contact spring armature outlet, so that the contacting pad arranged underneath it on the surface of the printed circuit board can be formed in a smaller space requirement.
  • the essentially oppositely arranged, resilient contact spring legs comprise slots which define contact spring tongues.
  • the contact spring tongues are bent outwardly at the end to ensure a safe insertion of the contact pin.
  • insertion bevels are formed on the undersides of the contact spring leg outlets. These insertion bevels serve as insertion aid of the contacting element preferably designed as a contact spring during the assembly process.
  • the insertion bevels allow the mounting of the contacting element in a printed circuit board cutout with chamfers or radii.
  • the contacting element which is designed as a contact spring, has punched or otherwise manufactured slits through which contact spring tongues are produced in the substantially oppositely arranged contact spring legs. These in turn allow a distribution of the current to a plurality of contact spring tongues and thus advantageously a reduction of the contact resistance and thus an increase in the current carrying capacity of the inventively proposed contacting element.
  • the at least one contact spring tongue further offers a tolerance compensation against a rotation of the contact element proposed according to the invention relative to its installation position in the printed circuit board cutout of the printed circuit board. A larger number of contact tongues, which are punched, for example, in the side walls of the contact spring legs of Kunststoffmaschinesfederettis allows this advantageous effect.
  • the slits, the substantially opposing contact spring legs extending contact spring tongues can be formed in an arc shape. This allows easier handling in the event that the contacting elements proposed according to the invention are produced as bulk material, so that at its handling according to this advantageous embodiment of the solution proposed by the invention a hooking individual contacting elements can be avoided each other.
  • the execution of the embossing on the spring legs on the outside of the contact element is designed so that the joining forces are minimized in the circuit board.
  • This in turn has the advantage that the burdens in the area of the breakouts in the circuit board remain minimal and thus the Tabuzonen can be reduced, which in turn allows a minimum installation space in a simple manual or semi-manual assembly process.
  • this type of execution of the embossing significantly reduces the abrasion of the surface coating of the printed circuit board and of the contacting element during the joining process. This, in turn, is very important for a durable low contact resistance over the lifetime seen.
  • FIG. 1 shows a perspective view of a particular trained as a contact spring contacting element. Like yourself FIG.
  • a contacting element 10 designed in particular as a contact spring comprises two contoured contact spring limbs 20 arranged essentially opposite one another.
  • the at least one contact spring tongue 12 has a bent end piece 14.
  • the contact spring tongues 12 are through slits 16, as in FIG. 1 shown schematically, can run straight or as FIG. 3 is removable, can extend in an arcuate shape 42, formed.
  • the at least one contact spring tongue 12 in each of the contact spring legs 20 can be made for example by means of punching 18, wherein in each of the at least one contact spring tongue 12 each have an embossment 46 (see illustration according to FIG FIG. 2 ) is produced.
  • each other contact spring leg 20 are resiliently connected together via a bottom 54. Both contact spring leg 20 extend substantially, starting from the bottom 54 in the vertical direction and run at its upper end substantially in 90 ° angle oriented Kunststofffederschenkel spouts 22 from.
  • the contact spring leg outlets 22 are, as in FIG. 1 indicated, defined contact points 26a and 26b arranged. This ensures that the contact spring leg outlets 22 are formed bent upward, so that defined contact points 26b of a bending edge 26a to the circuit board 48 can be formed.
  • FIG. 2 is a side view of the inventively proposed arrangement comprising a contact element, designed to be taken as a contact spring.
  • FIG. 2 It can be seen that the printed circuit board 48 shown here in accordance with the invention is electrically conductively contacted at a plurality of contacting points by the contacting element 10 designed as a contact spring
  • FIG. 2 shows that, for example, the contact spring leg outlets 22 at the top of substantially oppositely oriented to each other Maisfederschenkel 20 the Contact surface 50 of the circuit board 48 to pads 28 and the printed circuit board cutout 34.
  • defined contact points 26 b are arranged along the bending edge 26 a, so that an electrically conductive contact with a reduced space between the arranged at the bottom of the Kunststofffederschenkel spouts 22 defined contact points 26 b and the pads 28, located at the top 50 of the electrically are to be contacted circuit board 48 is generated.
  • FIG. 2 shows that the at least one contact spring tongue 12, which is formed in the oppositely oriented contact spring legs 20, embossments 46 has.
  • the embossings 46 contact the printed circuit board 48 in the region of end faces 44 of a printed circuit board cutout 34.
  • further electrically conductive contacts ie, the inventively proposed increase in the number of electrically conductive contacting points between the contacting element 10 and a circuit board 48 shown here, for example, realized.
  • the contact spring leg is then advantageously even at the appropriate places with embossing 56, 58 provided in order to achieve a defined contact.
  • the first embossing 56 of the contact spring legs 20 contacts the contact pin 30.
  • the second embossing 58 of the contact spring legs 20 contacts the printed circuit board 48 in the transition of the end face 44 of a printed circuit board cutout 34 and the surface 50 of the printed circuit board 48.
  • FIG. 3 is a further view of the proposed arrangement according to the invention with the contacting element in the mounted in a printed circuit board cutout of a printed circuit board state.
  • FIG. 3 shows that, for example, in the transition region between the bent contact spring leg outlets 22 of the two oppositely arranged contact spring leg 20 insertion bevels 36 are formed.
  • the insertion bevels 36 serve as an insertion aid and for positioning in the printed circuit board cutout 34 of the contact element 10 proposed according to the invention during the assembly process, ie during insertion of the contacting element 10 into a printed circuit board cutout 34 of a printed circuit board 48 to be electrically contacted.
  • the lead-in bevel 36 and the bend make it possible to use the present invention, in particular formed as a contact spring contacting element 10 in the printed circuit board cutout 34, are formed on the radii to obstruct.
  • the possibility of obstructing by means of the insertion bevel 36, the contacting element 10 proposed according to the invention, in the printed circuit board cutout 34 at the radii makes a punching process for producing the printed circuit board cutout 34 superfluous.
  • the insertion bevels 36 with respect to their position, number of bends, which may be formed on one or more sides, a centering of the contacting element 10 with respect to the contact pin 30 to be contacted can be ensured. As shown in the illustration FIG.
  • a contact spring tongue 12 is executed in the contact spring leg 20 shown here in the plane of the drawing. This is by material removal in the form of an arcuate slits 40 resilient with respect to the remaining material of in FIG. 3 procure the contact spring leg 20 shown in the drawing plane.
  • arcuate notches 40 shown by way of example can of course also produce a plurality of spring-trained contact spring tongues 12 in the wall of the contact spring limb 20. The more arcuate slots 40 in the material of the contact spring leg 20th are generated, the greater the number of electrical contact points is generated.
  • a reduction of the contact resistance between the printed circuit board 48 to be contacted and the contacting element 10 proposed according to the invention can take place, which in turn can significantly increase its current carrying capacity.
  • the cross section of the contacting element can be increased and thus its current carrying capacity can be increased if necessary.
  • a spring-trained contact spring tongue 12 is shown in the wall material of the contact spring leg 20.
  • the slit 40 extends in an arc shape.
  • slit sheet 42 surround an embossment 46 formed in the material of the contact spring leg 20, which after formation of the arcuate slots 40 is a spring-formed contact spring tongue 12, 38.
  • This imprint 46 represents, compare representation according to FIG. 2 .
  • can be formed by an example in arcuate slot 40 as shown in FIG FIG. 3 can be achieved, which in an embodiment of the present invention proposed contacting element 10 as bulk material, the individual preferably not designed as contact springs contacting elements 10 interlock, so that easier handling during the assembly process is made possible.
  • the contacting element 10 proposed according to the invention is generally fed into the assembly process by vibratory conveyors, so that any possible entanglement of the contacting elements 10 would have enormous disadvantages, the occurrence of disturbances being considerably reduced by the geometry of the contacting element 10 proposed according to the invention.
  • the inventively proposed arrangement with the contacting element designed as a contact element can - as in the above context with the description of FIGS. 1 .
  • a contact spring for contacting a printed circuit board 48, such as for connecting an electrically commutated air conditioning blower in the automotive field, or in any application inside and outside the automotive sector, in which an electrical connection is required, and so
  • a printed circuit board 48 such as for connecting an electrically commutated air conditioning blower in the automotive field, or in any application inside and outside the automotive sector, in which an electrical connection is required, and so
  • household applications such as washing machines, dryers, dishwashers and the like
  • hybrid applications such as e-bike or hybrid applications in vehicles with internal combustion engine and at least one electric motor to be contacted electric motor.

Claims (5)

  1. Arrangement comprenant un circuit imprimé (48) et une broche de contact (30) et un élément d'interconnexion (10),
    configuré sous la forme d'un ressort de contact, comprenant des branches de ressort de contact (20) configurées à effet ressort, lesquelles établissent le contact avec une surface de contact (32) de la broche de contact (30), le circuit imprimé (48) étant pourvu d'au moins une portion de circuit imprimé (34) dans laquelle est disposé l'élément d'interconnexion (10) et plusieurs interconnexions (26a, 26b, 28 ; 14, 48 ; 46, 48 ; 56, 58) électriquement conductrices étant formées entre le circuit imprimé (48), la broche de contact (30) et l'élément d'interconnexion (10), les branches de ressort de contact (20) possédant des extrémités (24) cintrées vers l'extérieur, lesquelles présentent une arête de cintrage ou une ligne de cintrage (26a) comprenant des points de contact (26b) définis, qui forment une interconnexion avec des pastilles (28) du circuit imprimé,
    l'élément d'interconnexion (10) possédant des branches de ressort de contact (20) mutuellement opposées dans lesquelles est respectivement réalisée au moins une languette de ressort de contact (12, 38) qui est formée par fendage (16, 40),
    l'au moins une languette de ressort de contact (12) possédant une extrémité (14) cintrée qui facilite l'introduction de la broche de contact (30),
    caractérisé en ce que l'au moins une languette de ressort de contact (12) possède un gaufrage (46) qui établit un contact électriquement conducteur avec une face frontale d'une portion de circuit imprimé (34).
  2. Arrangement selon l'une des revendications précédentes, caractérisé en ce que du fait du fendage et de la formation de la languette de ressort de contact (12), les branches de ressort de contact (20) fendues font elles-mêmes office de zones de ressort de contact avec un premier gaufrage (56) destiné à l'interconnexion de la portion de circuit imprimé (34) et avec un deuxième gaufrage (58) destiné à l'interconnexion de la broche de contact (30).
  3. Arrangement selon l'une des revendications précédentes, caractérisé en ce que le fendage est réalisé sous la forme d'un fendage courbé (40, 42), une courbe de fendage (42) entourant partiellement le gaufrage (46).
  4. Arrangement selon l'une des revendications précédentes, caractérisé en ce que les branches de ressort de contact (20) comportent des biseaux d'introduction (36).
  5. Arrangement selon l'une des revendications précédentes, caractérisé en ce que plusieurs languettes de ressort de contact (12) mutuellement opposées représentent une compensation de tolérance contre la torsion entre les partenaires de contact, notamment l'élément d'interconnexion (10) par rapport au circuit imprimé (48).
EP12725386.2A 2011-06-16 2012-05-31 Éléments de mise en contact Not-in-force EP2721695B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011077589A DE102011077589A1 (de) 2011-06-16 2011-06-16 Kontaktierungselemente
PCT/EP2012/060305 WO2012171808A2 (fr) 2011-06-16 2012-05-31 Éléments de mise en contact

Publications (2)

Publication Number Publication Date
EP2721695A2 EP2721695A2 (fr) 2014-04-23
EP2721695B1 true EP2721695B1 (fr) 2018-02-14

Family

ID=46208019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12725386.2A Not-in-force EP2721695B1 (fr) 2011-06-16 2012-05-31 Éléments de mise en contact

Country Status (4)

Country Link
EP (1) EP2721695B1 (fr)
CN (1) CN103608972B (fr)
DE (1) DE102011077589A1 (fr)
WO (1) WO2012171808A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014201379A1 (de) * 2014-01-27 2015-07-30 Mahle International Gmbh Kontaktkommutierter Elektromotor
DE102017217884A1 (de) * 2017-10-09 2019-04-11 Robert Bosch Gmbh Verfahren und Vorrichtung zur Herstellung einer elektrisch leitenden Verbindung zwischen einer Leiterbahn und einem elektrischen Leiter
DE102017219193B3 (de) * 2017-10-26 2019-03-28 Phoenix Contact Gmbh & Co. Kg Steckbares Ensemble
CN110972433B (zh) * 2018-09-28 2023-06-27 罗伯特·博世有限公司 用于印刷电路板（pcb）的壳体
DE102018218434A1 (de) * 2018-10-29 2020-04-30 Bühler Motor GmbH Elektronikmodul, Pumpenantrieb mit diesem Elektronikmodul

Citations (1)

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Publication number Priority date Publication date Assignee Title
FR2506526A1 (fr) * 1981-05-21 1982-11-26 Dav Ind Clips perfectionnes pour connexion de languettes plates sur circuit imprime

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
DE7018078U (de) 1970-05-14 1970-08-06 Bbc Brown Boveri & Cie Kontaktfeder fuer leiterplatten.
DE3436119C2 (de) 1984-10-02 1986-10-02 Siemens AG, 1000 Berlin und 8000 München Kontaktfederelement zum Kontaktieren von Leiterplatten
DE29617905U1 (de) 1996-10-15 1996-12-05 Siedle & Soehne S Leiterplatte mit Kontaktfeder
FR2781611B1 (fr) * 1998-07-22 2000-10-06 Proner Comatel Sa Piece de contact pour connecteur femelle, et connecteur comportant une telle piece de contact
JP3643002B2 (ja) * 2000-01-31 2005-04-27 株式会社オートネットワーク技術研究所 基板実装型端子の実装方法
DE10122596A1 (de) 2001-05-10 2002-11-21 Leoni Bordnetz Sys Gmbh & Co Kontaktträger zur Steckkontaktierung von Bauelementen sowie Bauelemententräger zum Aufstecken von Bauelementen
US6974337B2 (en) * 2002-07-30 2005-12-13 Fci Americas Technology, Inc. Electrical connector and contact for use therein
JP4600249B2 (ja) * 2005-11-10 2010-12-15 パナソニック株式会社 圧入固定端子

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506526A1 (fr) * 1981-05-21 1982-11-26 Dav Ind Clips perfectionnes pour connexion de languettes plates sur circuit imprime

Also Published As

Publication number Publication date
CN103608972B (zh) 2016-05-11
DE102011077589A1 (de) 2012-12-20
WO2012171808A3 (fr) 2013-04-25
WO2012171808A2 (fr) 2012-12-20
CN103608972A (zh) 2014-02-26
EP2721695A2 (fr) 2014-04-23

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