EP0165162B1 - Crimping sockets for electrical contacts - Google Patents

Crimping sockets for electrical contacts Download PDF

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Publication number
EP0165162B1
EP0165162B1 EP85401055A EP85401055A EP0165162B1 EP 0165162 B1 EP0165162 B1 EP 0165162B1 EP 85401055 A EP85401055 A EP 85401055A EP 85401055 A EP85401055 A EP 85401055A EP 0165162 B1 EP0165162 B1 EP 0165162B1
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EP
European Patent Office
Prior art keywords
tongues
teeth
crimping
channel
wire
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EP85401055A
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German (de)
French (fr)
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EP0165162A1 (en
Inventor
Jean-Luc Lemaire
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PRONER ETS
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PRONER ETS
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Priority to AT85401055T priority Critical patent/ATE35596T1/en
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    • 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
    • H01R4/2495—Insulation penetration combined with permanent deformation of the contact member, e.g. crimping

Definitions

  • the electrical contacts can constitute lugs, sockets, pins, clips, extenders, the contact itself being pluggable, built-in, spring-loaded, screw, etc.
  • These contacts or contact parts can be mounted on the wires by screws, clamps, crimping, etc. In the case of crimping, this can be carried out bare wire, by insulation displacement contact, by insulation perforation ...
  • the present invention relates to any electrical contact comprising a barrel to be crimped by perforating insulation. It is applicable both to single-strand wires, as well as to the hair or cables called ORFAL ( R ), formed from spiral blades around a cotton strand and particularly used in telephony.
  • ORFAL R
  • the advantage of crimping through insulation perforation is on the one hand that it avoids long and costly labor and ensures increased productivity during assembly, and on the other hand that it avoids damaging the conductor at during the stripping operation, which is particularly important for very thin conductors.
  • the object of the invention is to remedy these drawbacks and to make contacts the barrel of which allows crimping of wires of various types with great reliability both as regards the quality of the contacts and the retention of the wires.
  • the barrel according to the invention is of the type defined in claim 1.
  • the barrel is produced by cutting and forming a brass sheet of 0.25 mm of brass in the general shape of a gutter.
  • the bottom 1 of the gutter has two tongues 2 and 3 cut and raised approximately perpendicular to the axis of the gutter.
  • at least one of the tabs can be slightly inclined towards the contact part 4 of the clip.
  • the wings 8 and 9 of the gutter 1 are crenellated: the hollows 10 of the slots are in front of or to the right of the tongues, while the teeth or projections 11 are located on either side of the tongues 2, 3.
  • the wings 8 and 9 of the gutter 1 are crenellated: the hollows 10 of the slots are in front of or to the right of the tongues, while the teeth or projections 11 are located on either side of the tongues 2, 3.
  • the edges of the teeth 11 are thinned or tapered into knife blades.
  • the teeth 11 of the slots penetrate the insulator and ensure good contacts with the conductors 12 held in place by the Vs of the tongues; the insulator 13 flows in the sticks of the wings 8 and 9 but also in the punctures 14, 15 left open by the cutting of the tongues 2 and 3.
  • the driver takes the winding course represented ; the edges of the V penetrate to the conductors 12, multiply the contacts; the points 6, 7 of the V also penetrate into the insulation and contribute to the contacts.
  • the tensile strength is increased by a slight inclination of one of the tabs.
  • the contact barrel according to the invention applies equally to lugs, pins, various sockets, as to a clip as shown and in general to any electrical crimp contact.
  • each wing 8 9 has three teeth 11 on either side of these tongues. But it goes without saying that we can adopt a different number of tabs each framed between two teeth of slots.

Abstract

1. Electrical contact comprising a crimping socket of the type produced by punching and shaping a sheet metal part to the general shape of a channel, whose flanges are intended to be folded over the wire at the instant of crimping, the bottom (1) of the channel comprising at least one tongue (2, 3) formed by punching and folded to substantially perpendicularly to the axis of the channel, the edges of the flanges (8, 9) being punched to form crenellations (10, 11) whose hollows (10) are situated opposite the tongues (2, 3), the teeth (11) being situated at the two sides of the tongues (2, 3), characterised in that : - tongues (2, 3) have and edge which is in the shape of a V open towards the opening of the channel, this edge being intended to penetrate into the insulation of the wire to the conductors (12) during crimping, and - the teeth (11) penetrate into the insulation of the wire to the conductors (12) during the course of crimping, - so as make electrical contact both through the tongues (2, 3) and through the teeth (11).

Description

Les contacts électriques peuvent constituer des cosses, douilles, broches, clips, prolongateurs, le contact lui-même étant enfichable, encastrable, à ressort, à vis, etc. Ces contacts ou pièces de contact peuvent être montés sur les fils par vis, pinces, sertissage, etc. Dans le cas de sertissage, celui-ci peut être réalisé surfil dénudé, par contact autodénudant, par perforation d'isolation...The electrical contacts can constitute lugs, sockets, pins, clips, extenders, the contact itself being pluggable, built-in, spring-loaded, screw, etc. These contacts or contact parts can be mounted on the wires by screws, clamps, crimping, etc. In the case of crimping, this can be carried out bare wire, by insulation displacement contact, by insulation perforation ...

La présente invention se rapporte à tout contact électrique comportant un fût à sertir par perforation d'isolant. Elle est applicable tant aux fils monobrins, qu'aux chevelus ou aux câbles dits en ORFAUX(R), formés de lames spiralées autour d'un brin de coton et particulièrement utilisés en téléphonie.The present invention relates to any electrical contact comprising a barrel to be crimped by perforating insulation. It is applicable both to single-strand wires, as well as to the hair or cables called ORFAL ( R ), formed from spiral blades around a cotton strand and particularly used in telephony.

L'avantage du sertissage par perforation d'isolant est d'une part qu'il évite une main- d'oeuvre longue et coûteuse et assure une productivité accrue au montage, et d'autre part qu'il évite de détériorer le conducteur au cours de l'opération de dénudage, ce qui est particulièrement important pour les conducteurs très fins.The advantage of crimping through insulation perforation is on the one hand that it avoids long and costly labor and ensures increased productivity during assembly, and on the other hand that it avoids damaging the conductor at during the stripping operation, which is particularly important for very thin conductors.

Mais il présente l'inconvénient que les contacts, qui résultent généralement du rabat de pointes ou sur des pointes, sont très aléatoires et souvent imparfaits et que la tenue du fil dans le fût est faible. Une autre solution consiste à repousser les fils dans des fentes transversales qui coupent l'isolant, voir p. ex. US-A-3767841. Mais cette solution n'est guère applicable qu'à des fils monobrins de section définie ; les fentes doivent en effet être dimensionnées selon le diamètre des fils, sinon ou bien le contact ne s'établit pas ou bien le fil est blessé ; il en résulte également la nécessité d'une gamme de dispositifs correspondant aux différents diamètres de fils.But it has the disadvantage that the contacts, which generally result from the flap of points or on points, are very random and often imperfect and that the resistance of the wire in the barrel is weak. Another solution is to push the wires into transverse slots that cut the insulation, see p. ex. US-A-3767841. However, this solution is hardly applicable except to single-strand wires of defined section; the slots must indeed be sized according to the diameter of the wires, otherwise either the contact is not established or the wire is injured; this also results in the need for a range of devices corresponding to the different wire diameters.

L'invention a pour but de remédier à ces inconvénients et de réaliser des contacts dont le fût permette le sertissage de fils de nature diverses avec une grande fiabilité tant en ce qui concerne la qualité des contacts que la rétention des fils.The object of the invention is to remedy these drawbacks and to make contacts the barrel of which allows crimping of wires of various types with great reliability both as regards the quality of the contacts and the retention of the wires.

Le fût selon l'invention est du type défini dans la revendication 1.The barrel according to the invention is of the type defined in claim 1.

Il résulte de cette constitution que lorsque les ailes de la gouttière sont rabattues sur le fil, au moment du sertissage, le fil reste centré par les languettes en V et les parties saillantes des créneaux pénétrent dans l'isolant dans des conditions de maintien de ce dernier qui assurent la réalisation des contacts recherchés. De plus, les parties saillantes des créneaux étant situées entre les languettes, le conducteur ne risque pas d'être détérioré. Par contre, ces zones correspondant à des crevés du fond de la gouttière, l'isolant est repoussé dans ces crevés ce qui, joint au parcours sinueux ainsi imposé au fil assure une excellente rétention.It follows from this constitution that when the wings of the gutter are folded over the wire, at the time of crimping, the wire remains centered by the V-shaped tongues and the projecting parts of the slots penetrate into the insulation under conditions of maintenance of this the latter who ensure the achievement of the desired contacts. In addition, the projecting parts of the slots being located between the tongues, the driver is not likely to be damaged. On the other hand, these zones corresponding to punctures of the bottom of the gutter, the insulation is pushed back into these punctures which, joined to the sinuous course thus imposed on the wire, ensures excellent retention.

L'invention vise également les dispositions ci-après :

  • a) Les parties saillantes ou dents des créneaux sont taillées en biseau comme des lames d'outils tranchants.
  • b) Il est prévu, sur la longueur du fût, deux languettes relevées et trois saillies ou dents de créneaux placées en alternance.
  • c) Au moins une languette est relevée avec une obliquité en direction de l'extrémité de la gouttière proche du contact électrique (clip, cosse, broche...) dont elle forme le fût.
  • d) Les extrémités des branches du V des languettes sont de préférence pointues.
The invention also relates to the following arrangements:
  • a) The projecting parts or teeth of the slots are cut bevel like blades of sharp tools.
  • b) There are provided, along the length of the barrel, two raised tabs and three projections or teeth of slots placed alternately.
  • c) At least one tongue is raised with an obliquity towards the end of the gutter close to the electrical contact (clip, terminal, pin ...) of which it forms the barrel.
  • d) The ends of the branches of the V of the tongues are preferably pointed.

Les dispositions de l'invention sont décrites ci-après avec référence au dessin annexé sur lequel est représenté un exemple de réalisation :

  • la figure 1 est en vue de dessus d'un clip en laiton muni d'un fût selon l'invention ;
  • la figure 2 est une vue en coupe longitudinale du même clip ;
  • la figure 3 est une vue de dessous ;
  • la figure 4 est une coupe selon B-B de la figure 1, à échelle agrandie ;
  • la figure 5 est une coupe longitudinale légèrement désaxée (selon C-C de la figure 1) montrant les résultats obtenus après sertissage ;
  • la figure 6 est une coupe transversale analogue effectuée au droit des dents des créneaux (selon A-A de la figure 2).
The arrangements of the invention are described below with reference to the attached drawing in which an exemplary embodiment is shown:
  • Figure 1 is a top view of a brass clip provided with a barrel according to the invention;
  • Figure 2 is a longitudinal sectional view of the same clip;
  • Figure 3 is a bottom view;
  • Figure 4 is a section along BB of Figure 1, on an enlarged scale;
  • Figure 5 is a slightly offset longitudinal section (according to CC of Figure 1) showing the results obtained after crimping;
  • Figure 6 is a similar cross section taken at the teeth of the teeth (according to AA in Figure 2).

En se reportant aux figures 1 à 4, on voit que, dans cet exemple, le fût est réalisé par découpage et formage d'une feuille de laiton de 0,25 mm de laiton en forme générale de gouttière.Referring to Figures 1 to 4, it can be seen that, in this example, the barrel is produced by cutting and forming a brass sheet of 0.25 mm of brass in the general shape of a gutter.

Conformément à l'invention, le fond 1 de la gouttière comporte deux languettes 2 et 3 découpées et relevé approximativement perpendiculairement à l'axe de la gouttière. Comme on peut le voir sur la figure 2, l'une au moins des languettes peut être légèrement inclinée vers la partie contact 4 du clip.According to the invention, the bottom 1 of the gutter has two tongues 2 and 3 cut and raised approximately perpendicular to the axis of the gutter. As can be seen in Figure 2, at least one of the tabs can be slightly inclined towards the contact part 4 of the clip.

Le bord des languettes 2 et 3, opposé à la zone de pliage, est découpé en V ouvert 5 (figure 4) aux extrémités pointues 6 et 7.The edge of the tongues 2 and 3, opposite the folding zone, is cut into an open V 5 (FIG. 4) with the pointed ends 6 and 7.

Les ailes 8 et 9 de la gouttière 1 sont crénelées : les creux 10 des créneaux sont en face ou au droit des languettes, tandis que les dents ou saillies 11 sont situées de part et d'autre les languettes 2, 3.The wings 8 and 9 of the gutter 1 are crenellated: the hollows 10 of the slots are in front of or to the right of the tongues, while the teeth or projections 11 are located on either side of the tongues 2, 3.

Les bords des languettes 2 et 3, opposé à la zone de pliage, est découpé en V ouvert 5 (figure 4) aux extrémités pointues 6 et 7.The edges of the tongues 2 and 3, opposite the folding zone, is cut into an open V 5 (FIG. 4) with the pointed ends 6 and 7.

Les ailes 8 et 9 de la gouttière 1 sont crénelées : les creux 10 des créneaux sont en face ou au droit des languettes, tandis que les dents ou saillies 11 sont situées de part et d'autre des languettes 2, 3.The wings 8 and 9 of the gutter 1 are crenellated: the hollows 10 of the slots are in front of or to the right of the tongues, while the teeth or projections 11 are located on either side of the tongues 2, 3.

Les bords des dents 11 sont amincis ou effilés en lames de couteaux.The edges of the teeth 11 are thinned or tapered into knife blades.

Les coupes effectuées après sertissage et qui font l'objet des figures 5 et 6 montrent que :The cuts made after crimping and which are the subject of Figures 5 and 6 show that:

Les dents 11 des créneaux pénètrent dans l'isolant et assurent de bons contacts avec les conducteurs 12 maintenus en place par les V des languettes ; l'isolant 13 flue dans les crosses des ailes 8 et 9 mais aussi dans les crevés 14, 15 laissés ouverts par la découpe des languettes 2 et 3. Le conducteur prend le parcours sinueux représenté ; les bords des V pénètrent jusqu'aux conducteurs 12, multiplient les contacts ; les pointes 6, 7 des V pénètrent également dans l'isolant et contribuent aux contacts. La résistance à la traction est augmentée par une légère inclinaison de l'une des languettes.The teeth 11 of the slots penetrate the insulator and ensure good contacts with the conductors 12 held in place by the Vs of the tongues; the insulator 13 flows in the sticks of the wings 8 and 9 but also in the punctures 14, 15 left open by the cutting of the tongues 2 and 3. The driver takes the winding course represented ; the edges of the V penetrate to the conductors 12, multiply the contacts; the points 6, 7 of the V also penetrate into the insulation and contribute to the contacts. The tensile strength is increased by a slight inclination of one of the tabs.

Les essais de chute de tension et de tenue à la traction donnent les résultats moyens ci-après :

  • 1) Câble à 7 brins - Intensité admise 380 mA
    Figure imgb0001
  • 2) Câble ORFAUX(A) (3 brins) - Intensité admise 330 mA
    Figure imgb0002
The voltage drop and tensile strength tests give the following average results:
  • 1) 7-wire cable - Acceptable current 380 mA
    Figure imgb0001
  • 2) ORFAUX cable ( A ) (3 strands) - Acceptable current 330 mA
    Figure imgb0002

Les valeurs recherchées étant de

Figure imgb0003
The values sought being
Figure imgb0003

On voit que les résultats obtenus sont supérieurs aux buts proposés. La résistance du contact est pratiquement négligeable. Elle peut être considérée comme inférieure à 5 mS2 avec une valeur typique de l'ordre de 2 mil. La tenue de la traction est voisine de la résistance à la traction du fil lui-même pour un multibrins.We see that the results obtained are superior to the proposed goals. Contact resistance is practically negligible. It can be considered as less than 5 mS2 with a typical value of the order of 2 mil. The tensile strength is close to the tensile strength of the wire itself for a multi-strand.

Comme exposé plus haut, le fût de contact selon l'invention s'applique aussi bien aux cosses, broches, douilles diverses, qu'à un clip tel que représenté et d'une manière générale à tout contact électrique à sertissage.As explained above, the contact barrel according to the invention applies equally to lugs, pins, various sockets, as to a clip as shown and in general to any electrical crimp contact.

Dans la forme de réalisation préférée qui est représentée, il est prévu deux languettes 2, 3 découpées en opposition et chaque aile 8, 9 compte trois dents 11 de part et d'autre de ces languettes. Mais il va de soi que l'on peut adopter un nombre différent de languettes encadrées chacune entre deux dents de créneaux.In the preferred embodiment which is shown, there are provided two tongues 2, 3 cut in opposition and each wing 8, 9 has three teeth 11 on either side of these tongues. But it goes without saying that we can adopt a different number of tabs each framed between two teeth of slots.

Claims (5)

1. Electrical contact comprising a crimping socket of the type produced by punching and shaping a sheet metal part to the general shape of a channel, whose flanges are intended to be folded over the wire at the instant of crimping, the bottom (1) of the channel comprising at least one tongue (2, 3) formed by punching and folded to substantially perpendicularly to the axis of the channel, the edges of the flanges (8, 9) being punched to form crenellations (10, 11) whose hollows (10) are situated opposite the tongues (2, 3), the teeth (11) being situated at the two sides of the tongues (2, 3), characterised in that:
- tongues (2, 3) have and edge which is in the shape of a V open towards the opening of the channel, this edge being intended to penetrate into the insulation of the wire to the conductors (12) during crimping, and
- the teeth (11) penetrate into the insulation of the wire to the conductors (12) during the course of crimping,
- so as make electrical contact both through the tongues (2, 3) and through the teeth (11).
2. Contact according to claim 1, characterised in that the teeth (11) are cut to a bevelled shape.
3. Contact according to any one of the preceding claims, characterised in that the ends of the limbs (6 and 7) of the V of the tongues are pointed.
4. Contact according to any one of the preceding claims, characterised in that at least one tongue is folded to be situated at an inclination in the direction of the contact.
5. Contact according to any one of the preceding claims, characterised in that two tongues (2, 3) are provided, and each flange comprises three teeth (11) of crenellations, these teeth being situated at either side of the tongues, alternating with the hollows (10).
EP85401055A 1984-05-30 1985-05-29 Crimping sockets for electrical contacts Expired EP0165162B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85401055T ATE35596T1 (en) 1984-05-30 1985-05-29 PRESS BUSHES FOR ELECTRICAL CONTACTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8408517 1984-05-30
FR8408517A FR2565421B1 (en) 1984-05-30 1984-05-30 IMPROVEMENTS IN CRIMP DRUMS FOR ELECTRICAL CONTACTS

Publications (2)

Publication Number Publication Date
EP0165162A1 EP0165162A1 (en) 1985-12-18
EP0165162B1 true EP0165162B1 (en) 1988-07-06

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EP85401055A Expired EP0165162B1 (en) 1984-05-30 1985-05-29 Crimping sockets for electrical contacts

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EP (1) EP0165162B1 (en)
JP (1) JPS6158178A (en)
AT (1) ATE35596T1 (en)
DE (1) DE3563671D1 (en)
FR (1) FR2565421B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105552599B (en) * 2016-02-02 2017-11-07 江苏万丰电气有限公司 Electric wire quick connector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2982938A (en) * 1956-03-14 1961-05-02 Jr Ferdinand Klumpp Insulation piercing terminal
FR1381155A (en) * 1963-02-04 1964-12-04 Snap-in electrical outlet
US3696322A (en) * 1970-06-01 1972-10-03 Itt Insulated flat wire terminal
US3767841A (en) * 1972-07-25 1973-10-23 Amp Inc Conductor in-slot electrical connectors

Also Published As

Publication number Publication date
DE3563671D1 (en) 1988-08-11
ATE35596T1 (en) 1988-07-15
FR2565421B1 (en) 1987-09-04
EP0165162A1 (en) 1985-12-18
FR2565421A1 (en) 1985-12-06
JPS6158178A (en) 1986-03-25

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