EP2255412B1 - Dispositif de connexion électrique - Google Patents

Dispositif de connexion électrique Download PDF

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Publication number
EP2255412B1
EP2255412B1 EP09710771.8A EP09710771A EP2255412B1 EP 2255412 B1 EP2255412 B1 EP 2255412B1 EP 09710771 A EP09710771 A EP 09710771A EP 2255412 B1 EP2255412 B1 EP 2255412B1
Authority
EP
European Patent Office
Prior art keywords
contact
fingers
electrical connection
connection device
spring
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
EP09710771.8A
Other languages
German (de)
English (en)
Other versions
EP2255412A2 (fr
Inventor
Andreas Schrader
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.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact 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 Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of EP2255412A2 publication Critical patent/EP2255412A2/fr
Application granted granted Critical
Publication of EP2255412B1 publication Critical patent/EP2255412B1/fr
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
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/18—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with the spring member surrounding the socket
    • 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
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/113—Resilient sockets co-operating with pins or blades having a rectangular transverse section

Definitions

  • the invention relates to an electrical connection device, in particular for the transmission of high currents, as required in different technical fields.
  • currents of 125 amperes and more are transmitted at voltages of up to 1000 volts.
  • conductors with cross sections of 25 or 35 mm 2 may be required.
  • connection devices for transmitting high currents have become known in the prior art. These include flat plug contacts and in particular circular plug contacts, in which the contact point is formed substantially rotationally symmetrical. For such high currents, plugs with twisted connection parts are usually used to reliably transmit the occurring current strengths.
  • a contact with two opposing spaced contact fingers extending from a body portion thereof to receive a contact blade insertable therebetween.
  • the contact fingers are pressed by the placement of an over-spring with a substantially U-shaped cross section to each other, so that the intermediate contact blade is held by the contact fingers.
  • the contact tulip has a substantially box-shaped cross section and comprises a plurality of contact blades, which are arranged along the cross section.
  • the contact tulip serves for contact with a contact blade to be inserted therein, a positive spring held thereon being provided, which presses the contact blades of the contact tulip against one another with arranged on their broad sides
  • Additional over-spring fingers arranged on the narrow sides press against contact lamellae on the narrow side of the contact tulip.
  • the over-spring fingers are designed such that they each press a plurality of contact blades of the contact tulip against the contact blade.
  • the US 4,351,583 A relates to a substantially integrally formed connection device with a contact tulip, which has a U-shaped cross section in the insertion direction. At the open end of the U-shaped cross-section individual contact blades are connected to one another on one side so that they form a common contact surface with a contact blade to be introduced therebetween. To increase the contact pressure is an additional U-shaped spring over the Contact tulip inserted, which presses on several contact blades together to increase the contact pressure in the area of the contact surfaces.
  • the electrical connection device is particularly suitable for transmitting high currents and comprises at least a flat contact with a contact tulip and a contact blade with a predetermined blade thickness, wherein the flat contact is suitable for receiving the contact blade with the predetermined blade thickness.
  • a force provided for contacting is applied essentially by an over-spring in the contact region.
  • the contact tulip in an unloaded state about a free entrance width, which corresponds approximately to the predetermined blade thickness of the contact blade.
  • At least one length of the contact fingers of the contact tulip is considerably larger than a corresponding length of the over-spring fingers of the over-spring.
  • the obliquely converging areas of the over-spring fingers are considerably shorter than the converging areas of the contact fingers.
  • the over-spring fingers extend significantly obliquely to the receiving space with a recorded contact blade as the contact spring fingers to the receiving space or the contact blade. It is thereby achieved that the spring force of the over-spring is relatively large, while the long and relatively slightly inclined contact spring fingers a low spring constant and a large Contact area is provided. The contact force is applied substantially or even almost completely by the over-spring.
  • the electrical connection device according to the invention offers considerable advantages. By using the over-spring defined contact forces can be applied.
  • the solution according to the invention in which the over-spring applies the contact force precisely in the contact region, has the considerable advantage that settling phenomena on the contact tulip thereby play no or essentially no role.
  • the contact tulip has approximately a free entry width which corresponds approximately to the blade thickness of the contact blade to be inserted.
  • the contact blade could be inserted without any external force into the contact tulip without any external spring, but the current transmission would not be ensured.
  • the outer spring which preloads the contact area with the intended contact force. Defined conditions prevail which are permanently maintained at the contact tulip independently of any possible settlement conditions. This makes it possible to reduce the actual contact force, whereby a higher ease of use is achieved, where sowohI Plug on as well as the removal of a contact is facilitated.
  • the contact tulip has, in particular, at least two contact arms which are spaced apart from one another in the contact region around the entry width.
  • a push-through protection is provided, which prevents unintentional insertion, in particular in the rear region of the contact tulip.
  • the push-through protection can be designed as a connecting the two contact arms of the contact tulip web, so that a simple and effective push-through protection is provided.
  • the over-spring and the contact tulip each have a plurality of fins or mutually associated contact finger pairs.
  • the over-spring and the contact tulip each have a plurality of fins or mutually associated contact finger pairs.
  • three, four, five, six or even more pairs of contact fingers can be provided, which together form the contact tulip or its contact arms.
  • a corresponding number of Studentsfederfingerploen is provided, wherein a Studentsfederfingerplo is assigned in each case a pair of contact fingers.
  • a Studentsfederfingerplo is assigned in each case a pair of contact fingers.
  • an over-spring finger presses against a contact finger of the contact tulip, so that preferably each contact finger is loaded substantially equally.
  • the electrical connection device is designed in particular for contact forces less than 30 and in particular less than 20 Newton.
  • each contact finger pair brings about contact forces of less than 7 and in particular less than 5 Newton.
  • contact forces of between about 3 and 4 Newtons are applied per pair of contact fingers. This allows a high level of operating comfort, since only relatively small insertion and removal forces are required in the production or solution of an electrical contact with an electrical connection device.
  • the exact number of contact fingers and the overfinger and the respective contact force also depends in particular on the current to be transmitted.
  • At least one contact surface of the contact tulip has a layer containing silver.
  • Layers containing either silver or silver can significantly reduce friction, allowing for even greater comfort in operation.
  • Another advantage of silver or silver containing layers is the good electrical conductivity.
  • the electrical connection device according to the invention is particularly suitable for the transmission of currents greater than 80 amperes. Preferably, it is suitable for a transmission of currents greater than 100 amperes.
  • the contact tulip consists at least partially of copper material and in particular of a copper flat strip material, which is e.g. is punched and brought by bending into the desired shape.
  • the over-spring preferably consists essentially of steel material and may also be made of a ribbon material by one or more bending operations.
  • the push-through protection can be formed by two mutually bent regions.
  • the electrical connection device according to the invention can be arranged both on a base strip as well as be designed as a plug. Also a flying arrangement is possible.
  • Fig. 1 is a perspective view of a terminal contact according to the invention in the form of an electrical connection contact or an electrical connection device 1 shown.
  • the electrical connection device 1 comprises a flat contact 2 with at least one contact tulip 3 and an outer spring 6 surrounding the contact tulip 3 on the outside, which serves to ensure the required contact force.
  • the contact tulip 3 comprises spring arms 12 and 13, in particular as shown FIG. 2 and the in FIG. 5 can be taken from the processed transaction.
  • Each contact arm comprises a plurality of here in the exemplary embodiment, five contact fingers 15 which are formed in pairs, so that in each case two contact fingers 15 are aligned with each other.
  • a defined entry width 9 is provided in the unloaded state 8, which at least substantially corresponds to the predetermined blade thickness 5 of the contact blade 4. This ensures that not the spring arms 12 and 13 of the contact tulip 3 apply the required clamping force, but that the required contact force is applied by the over-spring fingers 17 of the over-spring 6.
  • the over-spring is preferably made of steel or other similar stable material, while the contact tulip with the contact finger pairs 11 advantageously made of copper or a copper alloy.
  • the contact fingers 15 may be provided in total or on the contact surface 18 with a silver coating or a silver-containing coating. As a result, a reduction in friction is achieved, whereby the ease of use is increased by lower insertion and removal forces.
  • the contact blade 4 is in the in the FIGS. 1 to 5 illustrated embodiment, provided with solder legs 22 to solder the contact blade 4 on a (not shown) circuit board.
  • the electrical connection device 1 has at the contact tulip 3 via an electrical connection 19, which can be connected to a (not shown) conductor.
  • the electrical connection device 1 can be used as a plug and plugged onto the contact blade 5, which is attached as a current bar to a circuit board.
  • the necessary contact force is applied by the over-spring 6, to which the over-spring fingers 17 load the contact finger pairs 11 in the contact region 7 with a defined spring force.
  • the length 16 of the over-spring fingers 17 is considerably shorter than the length 14 of the contact fingers 15. This ensures that the contact fingers 15 provide a large contact surface 18, while the over-spring 6 has a relatively large spring constant, so that the applied by the over-spring 6 Spring force is considerably greater than any spring force applied to the contact tulip 3.
  • the over-spring 6 brings the contact force. This causes, inter alia, that any subsidence phenomena on the spring arms 12 and 13 of the contact tulip 3 have no or only a very small influence on the contact force, as this is substantially or entirely determined by the over-spring. Therefore, the contact tulip 3 in the unloaded state has a free opening into which the contact blade 4 can be inserted.
  • a significant advantage is the formation of the spring arms 12 and 13 with a plurality of contact spring fingers 15, which are provided in a lamellar manner on the spring arms 12 and 13.
  • a total of ten contact spring fingers 15 are provided, which each form a total of five contact spring finger pairs.
  • Each contact finger 15 is assigned a corresponding over-spring finger 17, which pre-loads the respective contact finger 15 with a defined contact force in order to ensure defined conditions during contact.
  • Both the over-spring 6 and the contact tulip 3 are preferably made of one-piece sheet metal parts by bending.
  • the developments of the stamped sheet metal parts are in the FIGS. 4 and 5 shown. This ensures a simple and inexpensive production process, which allows a high quality with good producibility.
  • the over-spring 6 is listed so that a spring steel flat band is punched out and bent so that a closed cage is formed, which completely surrounds the elastic side of the tulip contacts. In addition, according to the number of contact spring fingers 15 of the contact tulip 3, the over-spring fingers are formed.
  • a push-through protection 10 is provided which prevents insertion of a conductor.
  • the electrical connection device 1 can be used in particular in flat connector systems with multipolar connectors.
  • the invention allows use at high currents with a simultaneously small size.
  • a very narrow pitch of e.g. 15 mm are ensured, while the necessary to operate plug and pull forces are low.
  • a silver-based surface ensures trouble-free operation even with vibrations or constantly changing stress influences.
  • both the contact tulip and the contact blade is arranged in the plug, as well as the connection of the contact blade or the contact tulip by means of corresponding solder pins in a base bar.
  • the electrical connection device 1 is inexpensive to manufacture.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Claims (9)

  1. Dispositif de connexion électrique (1), notamment pour le transfert d'intensités de courant élevées, comprenant au moins un contact plat (2) avec une tulipe de contact (3) et d'une lame de contact (4) avec une épaisseur de lame prédéterminée (5), où
    le contact plat (2) est approprié, dans une zone de contact (7), pour l'admission de la lame de contact (4) avec l'épaisseur de lame prédéterminée (5), où une force de contact prévue pour la mise en contact est mise en oeuvre dans la zone de contact (7) essentiellement par l'intermédiaire d'un ressort enrobant (6),
    la tulipe de contact (3) présente une multiplicité de paires de doigts de contact (11) avec chaque fois des doigts de contact (15) alignés par paires les uns sur les autres,
    entre une paire de doigts de contact (11) avec deux doigts de contact (15) alignés l'un sur l'autre à l'état non chargé, il est prévu une largeur d'introduction définie qui correspond dans l'ensemble à l'épaisseur de lame prédéterminée de la lame de contact,
    le ressort enrobant (6) avec ses doigts de ressort enrobant (17) respectifs et la tulipe de contact (3) avec ses doigts de contact (15) présentent respectivement le même multiple de paires de doigts (11, 17),
    les doigts de ressort enrobant (17) sollicitent les doigts de contact (15) avec une force élastique définie dans la zone de contact (7),
    une longueur (14) des doigts de contact (15) de la tulipe de contact (3) est plus grande qu'une longueur (16) des doigts de ressort enrobé (17) du ressort enrobé (6), et
    les doigts de ressort enrobé (17) s'étendent davantage inclinés vers l'espace d'admission avec une lame de contact (4) admise que les doigts de contact (15) inclinés vers l'espace d'admission ou vers la lame de contact (4).
  2. Dispositif de connexion électrique (1) selon la revendication 1, dans lequel, en tant que multiplicité de paires de doigts des doigts de contact (15) et des doigts de ressort enrobant (17), trois, quatre, cinq, six ou encore davantage de paires sont prévues et où en outre est prévu un opercule de protection (10).
  3. Dispositif de connexion électrique (1) selon l'une des revendications précédentes, dans lequel la pression de contact pour chaque paire de doigts de contact conditionnée dans l'ensemble par les doigts de ressort enrobé (17) du ressort enrobé (6) peut être concrétisée de sorte qu'un transfert d'intensités de courant supérieures à 80 Ampères peut être rendu possible.
  4. Dispositif de connexion électrique (1) selon l'une des revendications précédentes, dans lequel la pression de contact est conçue inférieure à 20 Newton.
  5. Dispositif de connexion électrique (1) selon l'une des revendications précédentes, dans lequel des forces de contact inférieures à 5 Newton s'appliquent sur chaque paire de doigts de contact (11).
  6. Dispositif de connexion électrique (1) selon l'une des revendications précédentes, dans lequel au moins une surface de contact (18) de la tulipe de contact (3) est munie d'une couche contenant de l'argent.
  7. Dispositif de connexion électrique (1) selon l'une des revendications précédentes, dans lequel le dispositif de raccordement est en outre ainsi conçu qu'il est approprié pour le transfert d'intensités de courant supérieures à 100 Ampères.
  8. Dispositif de connexion électrique (1) selon l'une des revendications précédentes, dans lequel la tulipe de contact (3) est constituée au moins partiellement d'un matériau à base de cuivre et/ou que le ressort enrobant est essentiellement constitué d'un matériau à base d'acier.
  9. Dispositif de connexion électrique (1) selon l'une des revendications précédentes, lequel est disposé sur une embase et/ou est conçu sous la forme d'une fiche.
EP09710771.8A 2008-02-14 2009-01-24 Dispositif de connexion électrique Active EP2255412B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008009357A DE102008009357A1 (de) 2008-02-14 2008-02-14 Elektrische Anschlusseinrichtung
PCT/EP2009/000459 WO2009100812A2 (fr) 2008-02-14 2009-01-24 Dispositif de connexion électrique

Publications (2)

Publication Number Publication Date
EP2255412A2 EP2255412A2 (fr) 2010-12-01
EP2255412B1 true EP2255412B1 (fr) 2017-04-12

Family

ID=40852260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09710771.8A Active EP2255412B1 (fr) 2008-02-14 2009-01-24 Dispositif de connexion électrique

Country Status (8)

Country Link
US (1) US8182299B2 (fr)
EP (1) EP2255412B1 (fr)
JP (1) JP5097277B2 (fr)
CN (1) CN101911395B (fr)
DE (1) DE102008009357A1 (fr)
DK (1) DK2255412T3 (fr)
ES (1) ES2626240T3 (fr)
WO (1) WO2009100812A2 (fr)

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Also Published As

Publication number Publication date
ES2626240T3 (es) 2017-07-24
WO2009100812A3 (fr) 2009-10-29
EP2255412A2 (fr) 2010-12-01
US8182299B2 (en) 2012-05-22
DK2255412T3 (en) 2017-06-26
JP5097277B2 (ja) 2012-12-12
DE102008009357A1 (de) 2009-08-27
WO2009100812A2 (fr) 2009-08-20
CN101911395B (zh) 2013-07-03
CN101911395A (zh) 2010-12-08
US20100311286A1 (en) 2010-12-09
JP2011512618A (ja) 2011-04-21

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