EP0433802B1 - Connecteur pour courant élevé avec deux fiches hermaphrodites - Google Patents

Connecteur pour courant élevé avec deux fiches hermaphrodites Download PDF

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Publication number
EP0433802B1
EP0433802B1 EP90123573A EP90123573A EP0433802B1 EP 0433802 B1 EP0433802 B1 EP 0433802B1 EP 90123573 A EP90123573 A EP 90123573A EP 90123573 A EP90123573 A EP 90123573A EP 0433802 B1 EP0433802 B1 EP 0433802B1
Authority
EP
European Patent Office
Prior art keywords
hermaphrodite
spring
set according
connector set
section
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 - Lifetime
Application number
EP90123573A
Other languages
German (de)
English (en)
Other versions
EP0433802A1 (fr
Inventor
Gerhard Keller
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.)
Schaltbau GmbH
Original Assignee
Schaltbau 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 Schaltbau GmbH filed Critical Schaltbau GmbH
Publication of EP0433802A1 publication Critical patent/EP0433802A1/fr
Application granted granted Critical
Publication of EP0433802B1 publication Critical patent/EP0433802B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/28—Contacts for sliding cooperation with identically-shaped contact, e.g. for hermaphroditic coupling devices
    • 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
    • H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials

Definitions

  • the invention relates to a high-current connector set with two elongated, under load plug and detachable hermaphrodite plugs, each at one end with a connecting part for a cable and an adjoining plug section in the form of two essentially parallel, fork-shaped from the Connection part of outstanding profile contacts lying in a common fork plane are provided, on each of which two contact surfaces extending in the longitudinal direction of the hermaphrodite plug, which are inclined at an angle of 45 ° to the fork plane, are formed, the planes of which enclose an angle of approximately 90 °.
  • Such connector sets are already known from practice.
  • Such a hermaphrodite connector is also described, for example, in the article "Hermaphroditic Snap-in Contact for 50 Mil Connectors" by Jerzy R. Sochor in the Proceedings 1976 Connector Symposium.
  • the profile contacts are punched out of sheet metal, the oblique contact surfaces being formed by stamping.
  • the electrical and thermal resistance increases, so that the heat generated can flow away less well.
  • the known hermaphrodite plugs are relatively good Offer contact transition, they have the disadvantage of relatively large or large size.
  • the total cross-section of the profile contacts when the hermaphrodite plug is plugged together is many times larger or higher than the cable cross-section.
  • These hybrid connectors are therefore unsuitable for use in relatively compact housings for high-current connectors.
  • High current is understood here to mean a current from 100 amperes, as is the case with so-called charging connectors for charging traction batteries for forklift trucks and the like. is used.
  • These charging connectors must be able to perform the function of an emergency switch and therefore be removable and also pluggable under load; however, they may only take up relatively little space.
  • the contact surfaces of the profile contacts each extend up to approximately the cross-sectional envelope of the profile contacts arranged in a fork shape, and that the free ends of the fork-shaped profile contacts are spring-biased in pairs by a spring attached to the clamped end of the profile contacts.
  • a hermaphrodite contact is already known from US-A-24 41 921, in which the contact surfaces of the fork-shaped profile contacts extend up to approximately the cross-sectional envelope. The clamped ends of the profile contacts are also surrounded by sleeves there.
  • these sleeves serve to hold the free ends of the profile contacts of the other connector, which can be inserted with its profile contacts up to this sleeve.
  • the good contact with these plugs only comes into play when they are finally plugged in.
  • These hermaphrodite contacts are not suitable for frequent plugging and unplugging and voltage, especially not with high current, where otherwise welding would inevitably take place.
  • the spring is designed as a spring sleeve which at least partially surrounds the profile contacts.
  • This spring sleeve can be easily pushed onto the fork-shaped profile contacts of a hermaphrodite plug and ensures that the profile contacts of a hermaphrodite plug are pressed towards each other, so that when the hermaphrodite plugs are plugged together, the necessary pressure is exerted on the abutting contact surfaces.
  • the spring can be designed in a particularly favorable manner in a C-like manner, the two free ends of the spring lying tangentially on the non-contacting outer surfaces of the profile contacts and pressing radially inward.
  • the free ends of the C-type spring can be connected to one another by a connecting section which nestles against the facing contact surfaces of the profile contacts and acts as a plug stop for the other hermaphrodite plug.
  • Another variant is that the free ends of the C-type spring are connected to one another by a connecting section which bulges outwards in the region of the facing contact surfaces.
  • This variant has the advantage that the profile contacts of the other hermaphrodite connector can be pushed under the spring without coming into contact with it. On In this way, the available contact area can be increased when the connector set is plugged in.
  • the spring sleeve is formed from a bimetallic material, its spring force acting on the profile contacts increasing when heated. This has the advantage that the contact resistance between the two hermaphrodite plugs is reduced, especially at high currents which lead to a certain degree of contact heating.
  • a fastening section is arranged between the connecting part and the plug section of a hermaphrodite plug, which is penetrated by a transverse bore, or has a profile gradation for the contact holder.
  • the connecting part of the hermaphrodite plug can advantageously be designed as a crimp connection, in which the cable to be connected is inserted and connected to the hermaphrodite plug by squeezing the crimp connection.
  • a connector set which has two hybrid plugs 3 and 4, each arranged in a housing 1 and 2.
  • the two hermaphrodite plugs 3 and 4 are constructed essentially identically and fulfill the function of a plug as well as a socket in the same way.
  • the hermaphrodite plugs have, in addition to their connecting part 5 provided at one end, a plug-in section 6 which essentially consists of two profile contacts 7 and 8 which are arranged in a fork-shaped manner and run parallel to one another and lie in a common fork plane G.
  • the profile cross section of a profile contact remains essentially constant over its entire length, if one disregards the fact that 7, 8 insertion bevels 11 are formed at the free ends of the profile contacts.
  • the profile contacts 7, 8 of a hermaphrodite plug 3 and 4 are enclosed by a spring sleeve 13, which exerts a radial pressure on the profile contacts 7, 8 and thus compresses the ends thereof.
  • the spring sleeve 13 consists of a sleeve-shaped bent heat-sensitive bimetallic strip which tends to reduce the radius of curvature when heated, thereby increasing the radial pressure on the profile contacts 7, 8 when heated.
  • the spring sleeve 13 are made of hardened steel. The exact shape of the spring will be explained later.
  • the connecting part of the hermaphrodite plug adjoining the plug-in section 6 consists of a sleeve-shaped crimp connection into which the stripped end of a cable 14 is inserted, after which the sleeve 5 is squeezed together, so that the stripped end of the cable 14 is held in place.
  • These crimp connections are already known.
  • the contact surfaces 9, 10 lie in contact planes K1, K2 which intersect at an angle of 90 °.
  • the cross section of the plugged profile contacts forms a full circle, the contact surfaces 9 and 10 now visible as lines essentially extending from the center to the cross-sectional circumference.
  • the transition surface formed in this way which is available for the current transfer, is thus relatively larger than in the pin-socket principle, in which at most linear contact can be achieved without the outer circumference of the hermaphrodite plug being enlarged thereby.
  • the hermaphrodite plugs 3 and 4 are made in one piece from copper, and the surface can be silver-plated or provided with a silver alloy for an improved current transfer against environmental influences.
  • a fastening section is provided in the hermaphrodite plug 3, 4 between the plug section 6 and the connecting part 5, which can be penetrated by a transverse bore in order to fix the hermaphrodite plug in the housing 1 or 2.
  • the embodiment is the hermaphrodite plug held in the housing 1 or 2 by a hollow screw 15, which also serves for the cable entry.
  • a first variant of a spring sleeve 13 is shown in more detail in FIG. 7.
  • the spring sleeve 13 generally has a C-shape, with its two free ends 14 of the C-shape resting on the non-contacting outer sides of the two profile contacts 7 and 8.
  • the free ends 14 are adapted to the contour of the outer circumference of the plug section.
  • the free ends 14 are connected to one another by a connecting section 15 which nestles against the facing contact surfaces 10 and 9 of the profile contacts 7 and 8, so that the connecting section has a total of three locations with relatively strong curvatures.
  • the connecting section 15 also serves as a stop when two connectors are plugged together.
  • FIG. 8 Another variant of the spring is shown in Fig. 8. There is the connecting the two free ends 14 of the C-shaped spring 13 connecting portion 15 'formed radially outward bulge, so that here too there is a change in curvature between the connecting portion 15' and the two free ends 14. With this type of spring, however, the profile contacts of the other connector can be pushed under the spring, so that the contact area available when plugged in can be enlarged.
  • the banjo bolt 15 is first placed on the cable. Then the cable end is stripped, after which a hermaphrodite plug 3 with its crimp sleeve is pushed onto the stripped end of the cable 14. The crimp sleeve 5 is then squeezed together, after which the housing 1 is pushed over the hermaphrodite plug 3 and is non-positively connected to the hermaphrodite plug 3 by screwing in the hollow screw 15. The same happens with the cable 14 'and the hermaphrodite connector 4. The hermaphrodite connector 3 and 4 must now be rotated 90 ° against each other and can then be plugged together, resulting in a contact cross section, as shown in Fig. 6.
  • the contact force between the contact surfaces 9 and 10 of the respective profile contacts 7, 8 and 7 ', 8' is applied essentially solely by the spring sleeve 13. This makes it possible to produce the contact surfaces completely flat in the manufacture of the hermaphrodite plug, so that when the connector is plugged in, a full-surface contact of the contact surfaces is achieved.
  • the use of a spring sleeve made of a bimetallic strip also has the advantage that the contact force is increased when the connector set is subjected to a high current, which generally results in heating. This in turn has the consequence that the current transfer is improved and thus the contact heating decreases.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Claims (13)

  1. Jeu de connecteurs pour courant fort, composé de deux connecteurs réversibles (3, 4), allongés, susceptibles d'être engagés et détachés sous charge, et qui comportent chaque fois à une extrémité, une pièce de raccordement (5) pour un câble (14) et un segment de connecteur (6) adjacent, sous la forme de deux contacts profilés (7, 8, 7′, 8′) situés dans un plan commun (G), essentiellement parallèles l'un à l'autre, en forme de fourche, sortant de la pièce de raccordement, avec sur ses contacts de profilé, chaque fois deux surfaces de contact (9, 10) s'étendant dans la direction longitudinale du connecteur réversible (3, 4) en étant inclinées d'un angle d'environ 45° par rapport au plan (G) de la fourche, surface de contact dont les plans (K1, K2) font entre eux un angle d'environ 90°, jeu de connecteurs caractérisé en ce que les surfaces de contact (9, 10) des contacts profilés (7, 8) s'étendent environ chaque fois jusqu'à l'enveloppe de la section des contacts profilés (7, 8) de la forme de fourche et en ce que les extrémités libres des contacts profilés (7, 8) en forme de fourche sont précontraintes élastiquement par paire par un ressort (13) prévu à l'extrémité de fixation des profilés de contact.
  2. Jeu de connecteurs selon la revendication 1, caractérisé en ce que le ressort (13) est une douille élastique entourant au moins partiellement les contacts profilés.
  3. Jeu de connecteurs selon la revendication 1 ou 2, caractérisé en ce que le ressort (13) a une forme de C dont les deux extrémités libres (14) sont appliquées de manière tangente sur les surfaces extérieures qui ne se touchent pas des contacts profilés (7, 8).
  4. Jeu de connecteurs selon la revendication 3, caractérisé en ce que les extrémités libres (14) du ressort (13) en forme de C sont reliées par un segment de jonction (15) qui s'appuie étroitement contre les surfaces de contact en regard (9, 10) des contacts profilés (7, 8) et ce segment constitue une butée d'engagement pour l'autre connecteur réversible.
  5. Jeu de connecteurs selon la revendication 3, caractérisé en ce que les extrémités libres (14) du ressort (13) en forme de C sont reliées par un segment de liaison (15′) qui est bombé vers l'extérieur au niveau des surfaces de contact en regard (9, 10) des contacts profilés (7, 8).
  6. Jeu de connecteurs selon l'une des revendications 1 à 5, caractérisé en ce que le ressort (13) est formé d'un bimétal thermique, dont la force de ressort exercée sur les contacts profilés (7, 8) augmente avec la température.
  7. Jeu de connecteurs selon l'une des revendications 1 à 6, caractérisé en ce que la section des contacts profilés (7, 8) de deux connecteurs réversibles engagés forme un cercle complet.
  8. Jeu de connecteurs selon l'une des revendications 1 à 7, caractérisé en ce que la section des contacts profilés (7, 8) engagés, est inférieure ou égale à la section du câble (14) relié aux connecteurs réversibles (3, 4).
  9. Jeu de connecteurs selon l'une des revendications 1 à 8, caractérisé en ce que les surfaces de contact (9, 10) des contacts profilés (7, 8) en forme de fourche ont une distance telle que sans ressort (13), lorsque les connecteurs réversibles (3, 4) sont engagés, il n'y a pas de force de contact ou qu'une force de contact très faible agit sur les surfaces de contact (9, 10).
  10. Jeu de connecteurs selon l'une des revendications 1 à 9, caractérisé en ce qu'entre la partie de raccordement (5) et le segment de connecteur (6) d'un connecteur réversible, se trouve un segment de fixation traversé par un perçage transversal.
  11. Jeu de connecteurs selon l'une des revendications 1 à 10, caractérisé en ce que la pièce de raccordement est en forme de douille de sertissage (5).
  12. Jeu de connecteurs selon l'une des revendications 1 à 11, caractérisé en ce que les contacts profilés (7, 8) sont en cuivre ou en aluminium.
  13. Jeu de connecteurs selon l'une des revendications 1 à 12, caractérisé en ce que les contacts profilés (7, 8) sont argentés.
EP90123573A 1989-12-19 1990-12-07 Connecteur pour courant élevé avec deux fiches hermaphrodites Expired - Lifetime EP0433802B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8914923U DE8914923U1 (fr) 1989-12-19 1989-12-19
DE8914923U 1989-12-19

Publications (2)

Publication Number Publication Date
EP0433802A1 EP0433802A1 (fr) 1991-06-26
EP0433802B1 true EP0433802B1 (fr) 1994-09-28

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ID=6845625

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EP90123573A Expired - Lifetime EP0433802B1 (fr) 1989-12-19 1990-12-07 Connecteur pour courant élevé avec deux fiches hermaphrodites

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EP (1) EP0433802B1 (fr)
BG (1) BG60040B2 (fr)
DE (2) DE8914923U1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010008112A1 (de) * 2010-02-15 2011-08-18 Amphenol-Tuchel Electronics GmbH, 74080 Hochstromkontaktelement
DE102016114179A1 (de) * 2016-08-01 2018-02-01 Phoenix Contact Gmbh & Co. Kg Hermaphroditisches Kontaktelement
GB2580376A (en) * 2019-01-07 2020-07-22 Harwin Plc Electrical Connector

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441921A (en) * 1943-11-09 1948-05-18 Albert & J M Anderson Mfg Co Electrical connector

Also Published As

Publication number Publication date
DE8914923U1 (fr) 1991-04-18
EP0433802A1 (fr) 1991-06-26
BG60040B2 (en) 1993-07-30
DE59007336D1 (de) 1994-11-03

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