EP1480290B1 - Dispositif de contact avec un fil de connexion - Google Patents

Dispositif de contact avec un fil de connexion Download PDF

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Publication number
EP1480290B1
EP1480290B1 EP04101516A EP04101516A EP1480290B1 EP 1480290 B1 EP1480290 B1 EP 1480290B1 EP 04101516 A EP04101516 A EP 04101516A EP 04101516 A EP04101516 A EP 04101516A EP 1480290 B1 EP1480290 B1 EP 1480290B1
Authority
EP
European Patent Office
Prior art keywords
wire
contact arrangement
arrangement according
clip
recess
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.)
Expired - Fee Related
Application number
EP04101516A
Other languages
German (de)
English (en)
Other versions
EP1480290A2 (fr
EP1480290A3 (fr
Inventor
Thomas Goettel
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 EP1480290A2 publication Critical patent/EP1480290A2/fr
Publication of EP1480290A3 publication Critical patent/EP1480290A3/fr
Application granted granted Critical
Publication of EP1480290B1 publication Critical patent/EP1480290B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/2445—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
    • 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5804—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part
    • H01R13/5812—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part the cable clamping being achieved by mounting the separate part on the housing of the coupling device

Definitions

  • the invention relates to a contact arrangement with a wire connection according to the preamble of claim 1.
  • Many electromagnetic products such as in particular relays and the like, comprise electrical coils which are wound from thin, enamel-insulated copper wires.
  • the carriers or winding bodies of the coils preferably consist of a plastic material with thermoplastic properties.
  • the products have terminals that must be connected to the wire ends to make mechanical and electrical contact. In the relaying technique, this is often done by soldering or welding. During soldering, the component to be soldered is brought into the vicinity of the highly heated solder bath. Alone, the radiant heat of the solder bath often leads to a softening of the thermoplastic material, which deforms and thus makes the component useless.
  • the process time required for the soldering process is comparatively high. Flux must be applied. This is usually followed by a drying step before the actual soldering process can take place in a soldering wave.
  • the condition of the solder bath and the fluxing have a big influence on the quality of the solder joint. A solder joint can only be tested destructively. It should also be considered that solder contains lead.
  • this heavy metal is a declarable pollutant according to EU Directive 2000/53 / EC.
  • EU Directive 2000/53 / EC When welding in particular very thin wires there is a risk that the wire burns off and no mechanical and electrical connection is made.
  • only a few copper alloys are suitable for welding.
  • Soldering and welding connections can not be redundant. Furthermore, it is known to provide so-called insulation displacement connections in contact arrangements with wires, which exert great shear forces on the wire during the joining process. This type of connection is not suitable for thin wires. In addition, a high production quality is required for punching the insulation displacement terminals.
  • the contact arrangement according to the invention avoids the disadvantages of the known types of connection. It is based on the knowledge that a gentle mechanical connection allows a mechanically secure attachment even very thin wires with good electrical contact. Since no heat is applied, the contact arrangement according to the invention can also be used to great advantage in thermally sensitive components be used. Since, in deviation from a soldering process, no pretreatment of the parts to be joined is required, very short process or cycle times are possible in the production of the contact arrangement. All common electrically conductive materials, in particular inexpensive brass alloys, can be used for the components of the contact arrangement since the material pairing critical for a welding process does not have to be taken into account. By a correspondingly adapted dimensioning of the clip width B even very thin wires can be securely contacted. The production of redundant connections or the repair of a failed contact are readily possible, so that rejects due to incorrect contacts can be largely reduced.
  • FIG. 1 a perspective view of an electrical device with a contact device according to the invention
  • FIG. 2 a section through the device according to FIG. 1 along the cutting plane AA
  • FIG. 3 a section through the device according to FIG. 1 along the section plane BB
  • FIG. 4 an enlarged detail FIG. 3
  • FIG. 5 a modified bracket with sections of different width
  • FIG. 6 a terminal with modified recesses.
  • FIG. 1 shows a perspective view of an electrical device 1 with a contact device according to the invention 3,7,9.
  • the electrical device 1 consists of a base body 2, on which a coil 8 is shown only schematically. Usually, this coil is made of a thin enameled copper wire (wire 7), which is wound on a bobbin, not shown here.
  • the contact arrangement according to the invention now connects at least one end piece of the thin wire 7 mechanically and electrically to a connection terminal 3, which is fixed in one piece with the base body 2.
  • the terminal 3 is preferably angled in an L-shape.
  • the short limb of the L extends substantially parallel to a main surface of the base body 2.
  • FIG. 2 shows a section through the device 1 according to FIG. 1 along the cutting plane AA.
  • FIG. 3 shows a section through the device 1 according to FIG. 1 along the section plane BB.
  • FIG. 4 shows in the enlarged detail D of a sub-area FIG. 3 is reproduced, while the cladding region of the wire 7 is so heavily loaded by the sharp edges of the recess 4, 5, 6 and the clamp 9, that the insulating sheathing of the enamel-insulated wire is broken and an electrical connection between the terminal 3 and the core material of the Wire 7 is made.
  • FIG. 1 a perspective view of an electrical device with a contact device according to the invention
  • FIG. 2 a section through the device according to FIG. 1 along the cutting plane AA
  • FIG. 3 a section through the device according to FIG. 1 along the section plane BB
  • FIG. 4 an enlarged detail FIG. 3 ,
  • the legs of the bracket 9 are preferably provided with tips ( FIG. 1 ).
  • the legs of the brackets 9 are expediently provided with barbs or notches 9a, which make it difficult to pull out the clamp 9 driven into the base body 2.
  • the contact arrangement can be formed particularly securely and redundantly by providing more than one clamp 9 for fastening the wire 7.
  • At first unsuccessful connections can also be improved in a simple manner by setting at least one additional additional bracket 9 in addition to an already driven bracket 9.
  • the bracket 9 has a constant width B over its entire length, which is smaller than the width S of the recess 4, 5, 6.
  • FIG. 5 has a clip 9 in sections different widths B1, B2, wherein the width B2 in the leg region of the bracket 9 is less than the width B2 in the region of its U-shaped arc.
  • the width B2 of the bracket 9 is smaller than the width S of the recess 4,5,6 and the width B1 of the bracket 9 is greater than the width S of the recess 4,5,6.
  • FIG. 6 shows a terminal 3 with modified recesses 4a, 5a, 6a.
  • the recesses 4a, 5a, 6a have substantially the shape of circular cylindrical holes, which are arranged in pairs to each other.
  • a contact arrangement according to the invention is produced as follows. As FIG. 1 shows, an end portion of the wire 7 is positioned on the short leg of the terminal 3 such that it at least partially covers the recesses 4,5,6. Subsequently, at least one clip 9 is driven or shot in the direction of the arrow 10 through the recess 4, 5, 6 in the connection terminal 3 into the base body 2. The wire 7 is partially retracted by the bracket 9 in the recesses 4,5,6 and thereby squeezed at the edges of terminal 3 and bracket 9 such that the paint insulation penetrated and a good electrical contact is made.
  • the cycle time for the production of a contact arrangement according to the invention is, compared to a soldering or welding process, extremely short. The production is therefore very inexpensive.
  • the joining process can be adapted to the respective diameter of the wire 7 by suitably dimensioning the widths S and B.
  • a driving in of the bracket 9 to measure for further process optimization is also conceivable. As a result, it can be controlled that the wire 7 is drawn deep enough into the recess 4, 5, 6, that on the one hand the lacquer layer is penetrated and good electrical contact is ensured, but on the other hand the wire 7 is not severed by the clamp 9 itself.
  • the contact arrangement according to the invention is particularly suitable for the attachment of thin copper enamel wires in electromagnetic relays. However, it is also well suited for the attachment of thin wires in other electrical components, such as electric motors, transformers and ignition coils in the same way.
  • the contact arrangement according to the invention is advantageously also at least as a means for strain relief in a wire connection, in which wires are already connected by means of a soldering or welding connection.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (13)

  1. Agencement de contact comprenant un fil de connexion, comportant une borne de raccordement (3) et un fil (7) connecté mécaniquement et électriquement à la borne de raccordement (3), la borne de raccordement (3) présentant au moins un évidement (4, 5, 6, 4a, 5a, 6a), et au moins un embout du fil (7) étant disposé sur la borne de raccordement (3) en recouvrant au moins en partie l'évidement (4, 5, 6, 4a, 5a, 6a),
    caractérisé en ce que
    le fil (7) est pressé contre la borne de raccordement (3) par une pince (9) entourant le fil et venant en prise à travers l'évidement (4, 5, 6, 4a, 5a, 6a) de la borne de raccordement (3), la borne de raccordement (3) étant fixée d'un seul tenant à un corps de base (2) et la pince (9) étant enfoncée dans le corps de base (2) à travers l'évidement (4, 5, 6, 4a, 5a, 6a) de la borne de raccordement (3).
  2. Agencement de contact selon la revendication 1, caractérisé en ce que la pince (9) est réalisée en forme de U.
  3. Agencement de contact selon l'une quelconque des revendications précédentes, caractérisé en ce que les branches de la pince (9) sont pourvues de pointes.
  4. Agencement de contact selon l'une quelconque des revendications précédentes, caractérisé en ce que les branches de la pince (9) sont pourvues de barbes ou de cliquets (9a).
  5. Agencement de contact selon l'une quelconque des revendications précédentes, caractérisé en ce que la largeur (B) de la pince (9), la largeur (S) de l'évidement (4, 5, 6, 4a, 5a, 6a) et le diamètre du fil (7) sont adaptés les uns aux autres de telle sorte que le fil (7) soit recourbé au moins en partie par la pince enfoncée (9) et soit introduit dans l'évidement (4, 5, 6, 4a, 5a, 6a) de telle sorte que l'isolation du fil (7) à vernis isolant soit traversée par les arêtes de l'évidement (4, 5, 6) et de la pince (9) et que de cette manière un bon contact électrique s'établisse entre le fil (7) et la borne de raccordement (3).
  6. Agencement de contact selon l'une quelconque des revendications précédentes, caractérisé en ce que dans la borne de raccordement (3) sont prévus plusieurs évidements (4, 5, 6, 4a, 5a, 6a) qui sont disposés à distance les uns des autres et s'étendent essentiellement parallèlement les uns aux autres.
  7. Agencement de contact selon l'une quelconque des revendications précédentes, caractérisé en ce que les évidements (4, 5, 6) sont réalisés essentiellement sous forme de trou oblong.
  8. Agencement de contact selon l'une quelconque des revendications précédentes, caractérisé en ce que les évidements (4a, 5a, 6a) sont réalisés essentiellement sous forme d'alésage cylindrique circulaire.
  9. Agencement de contact selon l'une quelconque des revendications précédentes, caractérisé en ce que le fil (7) est fixé avec une pluralité de pinces (9) .
  10. Agencement de contact selon l'une quelconque des revendications précédentes, caractérisé en ce que la largeur (B) de la pince (9) est plus petite que la largeur (S) de l'évidement (4, 5, 6, 4a, 5a, 6a).
  11. Agencement de contact selon l'une quelconque des revendications précédentes, caractérisé en ce que la pince (9) présente une largeur constante (B) sur toute sa longueur.
  12. Agencement de contact selon l'une quelconque des revendications précédentes, caractérisé en ce que la pince (9) présente en partie des largeurs différentes (B1, B2).
  13. Utilisation de l'agencement de contact selon l'une quelconque des revendications précédentes en tant que moyen de détente de traction.
EP04101516A 2003-05-23 2004-04-14 Dispositif de contact avec un fil de connexion Expired - Fee Related EP1480290B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10323484 2003-05-23
DE10323484A DE10323484A1 (de) 2003-05-23 2003-05-23 Kontaktanordnung mit einer Drahtverbindung

Publications (3)

Publication Number Publication Date
EP1480290A2 EP1480290A2 (fr) 2004-11-24
EP1480290A3 EP1480290A3 (fr) 2009-10-21
EP1480290B1 true EP1480290B1 (fr) 2011-11-02

Family

ID=33039304

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04101516A Expired - Fee Related EP1480290B1 (fr) 2003-05-23 2004-04-14 Dispositif de contact avec un fil de connexion

Country Status (3)

Country Link
EP (1) EP1480290B1 (fr)
DE (1) DE10323484A1 (fr)
ES (1) ES2374523T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012221897A1 (de) 2012-11-29 2014-06-05 Robert Bosch Gmbh Elektrische Kontaktanordnung zur Kontaktierung einer Spule

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5080606A (en) * 1990-11-05 1992-01-14 Minnesota Mining And Manufacturing Company Stacked in-line insulation displacement connector
DE10065972A1 (de) * 2000-05-29 2002-07-11 Taller Gmbh Flexfoliensteckerzugentlastung
JP3520986B2 (ja) * 2000-12-08 2004-04-19 タイコエレクトロニクスアンプ株式会社 電気コネクタ

Also Published As

Publication number Publication date
EP1480290A2 (fr) 2004-11-24
EP1480290A3 (fr) 2009-10-21
ES2374523T3 (es) 2012-02-17
DE10323484A1 (de) 2004-12-30

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