EP0402451B1 - Borne electrique pourvue de moyens pour assurer une connexion electrique fiable - Google Patents

Borne electrique pourvue de moyens pour assurer une connexion electrique fiable Download PDF

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Publication number
EP0402451B1
EP0402451B1 EP90901341A EP90901341A EP0402451B1 EP 0402451 B1 EP0402451 B1 EP 0402451B1 EP 90901341 A EP90901341 A EP 90901341A EP 90901341 A EP90901341 A EP 90901341A EP 0402451 B1 EP0402451 B1 EP 0402451B1
Authority
EP
European Patent Office
Prior art keywords
terminal assembly
conductor
electrical
insulating cover
cover means
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
EP90901341A
Other languages
German (de)
English (en)
Other versions
EP0402451A1 (fr
Inventor
Friedrich Alois Josef Kourimsky
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.)
Whitaker LLC
Original Assignee
Whitaker LLC
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Filing date
Publication date
Application filed by Whitaker LLC filed Critical Whitaker LLC
Publication of EP0402451A1 publication Critical patent/EP0402451A1/fr
Application granted granted Critical
Publication of EP0402451B1 publication Critical patent/EP0402451B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet
    • 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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive 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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve

Definitions

  • the invention relates to an electrical terminal which has a type of sealing means provided thereon.
  • the electrical terminal has a dielectric material which surrounds the electrical interconnection between the terminal and the cable, to prevent moisture from harming the electrical characteristics of the cable.
  • the dielectric material will cooperate with a terminal receiving cavity into which the terminal is inserted, thereby minimizing the air voids which are provided in the cavity.
  • the invention relates to an electrical terminal assembly for use in the termination of an electrical conductor according to the precharacterizing portion of claim 1.
  • Electrical connectors which receive in terminal receiving cavities thereof one or more electrical conductors having terminals terminated on ends thereof. Many of the terminals have wire seals which are disposed around each electrical conductor at the rearward end of the connector to provide a sealing arrangement between the conductor and the connector housing.
  • One such connector is disclosed in US-A-4,643,506, in which the conductor is sealingly engaged at locations forwardly and rearwardly from the location where the wire seal sealingly engages the sidewalls of the rearward cavity portion.
  • Sealing of the conductors is required when the terminals must be isolated from the surroundings. However, it is not required, nor is it practical in all situations to environmentally seal the conductors.
  • the air voids provided in the terminal receiving cavities can cause damage to the electrical connection which is effected between the terminals and the conductors. This is a particular problem when the connector is provided in an environment which has frequent temperature changes. As the temperature is reduced, the moisture provided in the air voids condenses onto the terminals and the conductors. The presence of moisture on the surfaces causes the deterioration of the terminals and the conductors, which results in an unreliable and essentially ineffective electrical connection between the respective terminal and conductors.
  • an electrical terminal assembly comprising an insulating cover means extending over a conductor engaging portion, the insulating cover means having an opening provided therein which allows the electrical conductor and conductor crimping means to be positioned in the opening, and securing means.
  • Said document discloses an electrical terminal assembly according to the preamble of claim 1.
  • an electric connector has come to be known which is protected from the effects of humidity.
  • This known connector comprises male and female contact members each mounted in casings and each embedded in a block of flexible elastic and insulating material, while leaving free the parts to be coupled.
  • the blocks each have, adjacent the parts to be coupled, pressuring ends which bear against a base wall transversed by the coupling part of the male member, and which are dished so that when the members are coupled each pressuring end is forced against the wall in the manner of a suction cup.
  • a weatherproof electrical connector has come to be known.
  • This known electrical connector has an interface sealing arrangement comprising a plug connector body having towers which slide into terminal cavity enlargements in a mating socket connector body.
  • An apertured seal pad is mounted the towers and sealingly engages a projecting shroud of the socket connector body.
  • the invention is related to an electrical terminal for use in the termination of an electrical conductor.
  • the electrical terminal has a first end and an opposed second end.
  • a mating portion of the terminal is positioned proximate the first end of the terminal, and a conductor engaging portion is provided proximate the second end of the terminal.
  • the conductor engaging portion has a conductor crimping means which cooperates with the conductor to provide the electrical interconnection between the conductor and the terminal.
  • An insulating cover means is provided which extends over the conductor engaging portion of the terminal.
  • the insulating cover means has an opening provided therein which allows the electrical conductor and conductor crimping means to be positioned in the opening, such that the moisture condensation is prevented from forming on the electrical conductor and the conductor crimping means.
  • Securing means are provided on the electrical terminal.
  • the securing means cooperate with the insulating cover means to maintain the insulating cover means in cooperation with the conductor crimping means.
  • An object of the invention is to provide a means to protect the terminal from corrosion due to moisture condensation which can occur due to temperature fluctuation. In order to accomplish this, it is important that the volume of air, which is provided in terminal receiving cavities of known connectors, be replaced by some other material.
  • Another object of the invention is to provide an easily installable and cost effective means to eliminate the air voids present in terminal receiving cavities.
  • the means to protect the terminals are installed on the terminals as the terminals are assembled to the conductors. This process allows for ease of handling and manipulation.
  • electrical connector 2 has an electrical terminal 4, a conductive cable 6, and a sealing sleeve 8.
  • the electrical terminal can have various mating areas, without departing from the scope of the invention.
  • Figure 2 illustrates the mating area of the electrical terminal comprising a pin 10
  • Figure 3 illustrates a pin receptacle 12 in the mating area.
  • terminal 4 with pin 10 provided thereon will be discussed in detail.
  • the operation and explanation of the terminal with the pin receptacle 12 is essentially identical.
  • terminal 4 has pin 10 provided at the mating end thereof.
  • a clamping portion 14 is provided adjacent the pin 10.
  • the clamping portion has resilient locking arms 16 which extend from the clamping portion at an angle relative to the longitudinal axis of the pin.
  • the resilient locking arms 16 are provided to cooperate with shoulders 18 of housing 20 to insure that the electrical connector 4 will be maintained in the proper position relative to the housing. This type of resilient locking feature is well known in the industry.
  • clamping arms 22 are also provided on clamping portion 14. As shown in Figures 1 and 6, clamping arms 22 are positioned proximate an end 24 of clamping portion 14 which is provided adjacent wire receiving member 26 of terminal 4. When clamping arms 22 are provided in their initial, unstressed position, intermediate portions 28 of the clamping arms extend from clamping portion 14 at an angle relative to the longitudinal axis of the pin. Free end portions 30 of clamping arms 22 are also bent at an angle relative to the intermediate portions of the clamping arms. The configuration of the clamping arms 22 allows the free end portions 30 to be bent around so that the free end portions 30 are positioned to extend toward the wire receiving member 26.
  • a collar 32 is provided proximate wire receiving member 26 and adjacent clamping arms 22. As is shown in Figure 1, the diameter of collar 32 is greater than the diameter of pin 10.
  • Wire receiving member 26 is positioned proximate clamping portion 14. The wire receiving member extends in the opposite direction from clamping portion 14 as does pin 10. As is shown in Figure 1, wire receiving member 26 has flanges 34 which extend in opposed directions, when the flanges are in their initial, unstressed positions. These flanges are deformed as cable 6 is terminated to the wire receiving member.
  • Sealing sleeve 8 is made from any material having the elastic and dielectric characteristics required. As is best shown in Figures 7 and 8, sealing sleeve 8 has an opening 36 which extends from end 38 to opposed end 40. The diameter of opening 36 is such to allow cable 6 to be inserted therethrough. However, as is best illustrated in Figure 2, the diameter of opening 36 is dimensioned to form a seal about cable 6. Therefore, after insertion of the cable in opening 36, the diameter of opening 36 may vary.
  • a first portion 42 of sealing sleeve 8 is provided with a relatively smooth outside surface, which has a generally consistent diameter.
  • a second portion 44 of sealing sleeve 8 is provided adjacent first portion 42 and opposed end 40.
  • Ridges 46 are provided on second portion 44 and extend circumferentially thereabout. Although three ridges 46 are provided in the embodiment shown, any number of ridges may be provided.
  • Housing 20 into which electrical connector 2 is provided has at least one terminal receiving cavity 48 which extends therethrough. As is shown in Figures 2 and 3, the diameter of the cavities varies according to the space requirements of the terminals inserted therein.
  • sealing sleeve 8 is positioned on cable 6 ( Figure 4). In this position cable 6 extends through opening 36.
  • the resilient nature of the material of which sleeve 8 is comprised allows the diameter of opening 36 to adjust to the diameter of cable 6.
  • clamping arms 22 are moved from an open position, shown in Figure 7, to a closed position, shown in Figure 8. In this closed position free end portions 30 of arms 22 deform sleeve 8.
  • the configuration of free end portions 30 and the deformation of sleeve 8 insures that sleeve 8 will be retained in position.
  • terminal 4 Once terminal 4, cable 6, and sleeve 8 are secured together, the assembly is positioned in the terminal receiving cavity 48 of housing 20, as shown in Figure 2. As is shown, the walls of the cavity prevent arms 22 from returning to the open position.
  • sleeve 8 is configured to minimize the air volume provided in the cavity. Consequently, as the connector is exposed to temperature fluctuations, there is not enough air provided in each cavity to cause moisture to condense on the terminals. This is an important result because the condensation of moisture can cause corrosion of the terminals, as well as the exposed ends of the cable, which results in a very unstable electrical connection. Therefore, the present invention discloses a terminal assembly which has a much more reliable electrical connection.
  • the sleeve 8 provides a type of seal about crimping portion 14 and the exposed end of cable 6. This also helps to provide for a more reliable electrical connection.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)

Abstract

Un connecteur électrique (2) comporte des cavités (48) de réception de bornes, dans lesquelles sont logées des bornes (4). Chaque borne (4) comporte une extrémité de connexion (10, 12) et une extrémité (26) destinée à recevoir un conducteur (6). Les bornes possèdent des revêtements isolants (8) qui sont positionnés sur les extrémités de réception de conducteur (26). Ces revêtements isolants sont fixés sur les bornes par des moyens de fixation (22) qui sont solidaires des bornes. La configuration des revêtements isolants est telle qu'elle permet d'éliminer les vides d'air créés dans les cavités de réception de bornes (48) du connecteur (2), protégeant ainsi les bornes de la corrosion qui peut se produire par suite de l'humidité créée par la condensation dans les vides d'air lorsque le connecteur est exposé à des fluctuations de température.

Claims (9)

  1. Assemblage (2) d'une borne électrique à utiliser dans la terminaison d'un conducteur électrique (6),
    a) l'assemblage (2) de borne électrique ayant une première extrémité et une seconde extrémité opposée,
    b) une partie d'accouplement (10) de l'assemblage (2) de borne est positionnée à proximité de la première extrémité de l'assemblage de borne, et une partie (26) d'engagement de conducteur est prévue à proximité de la seconde extrémité de l'assemblage (2) de borne,
    c) la partie (26) d'engagement de conducteur ayant un moyen (34) à sertir sur un conducteur qui coopère avec le conducteur (6) pour réaliser l'interconnexion électrique entre le conducteur (6) et l'assemblage (2) de borne,
    d) dans lequel des moyens isolants (8) de recouvrement sont prévus, lesquels s'étendent sur la partie (26) d'engagement de conducteur,
    e) les moyens isolants (8) de recouvrement présentant une ouverture (36) qui permet au conducteur électrique (6) et au moyen (34) à sertir sur le conducteur d'être positionnés dans l'ouverture (36), afin d'empêcher la formation d'humidité par condensation sur le conducteur électrique (6) et le moyen (34) à sertir sur le conducteur et
    f) dans lequel des moyens (22) de fixation sont prévus sur l'assemblage (2) de borne électrique, les moyens (22) de fixation coopérant avec les moyens isolants (8) de recouvrement pour maintenir les moyens isolants (8) de recouvrement en coopération avec le moyen (34) à sertir sur le conducteur,
    caractérisé en ce que
    g) lesdits moyens (22) de fixation sont des bras de serrage qui sont mobiles entre une première position et une seconde position par engagement avec un boîtier (1),
    h) des extrémités libres (30) des bras de serrage (22) coopérant avec les moyens isolants (8) de recouvrement dans la seconde position.
  2. Assemblage (2) de borne électrique selon la revendication 1, caractérisé en ce que les moyens (22) de fixation ont des extrémités fixes qui sont situées sur la partie (20) d'accouplement de l'assemblage (2) de borne, et des extrémités libres (30) qui s'étendent depuis les extrémités fixes vers la seconde extrémité de l'assemblage (2) de borne.
  3. Assemblage (2) de borne électrique selon la revendication 1, caractérisé en ce que les extrémités libres (30) des moyens (22) de fixation sont coudées sous un angle par rapport à l'extrémité fixe, afin que, lorsque les moyens (22) de fixation sont déplacés vers la seconde position, les extrémités libres (30) des moyens de fixation engagent les moyens isolants (8) de recouvrement.
  4. Assemblage (2) de borne électrique selon la revendication 1, caractérisé en ce que les moyens isolants (8) de recouvrement comportent une première partie extrême (38) et une seconde partie extrême (40), la première partie extrême (38) étant adjacente à la partie (10) d'accouplement de l'assemblage (2) de borne, la seconde partie extrême (40) ayant une nervure s'étendant circonférentiellement autour du diamètre extérieur du conducteur électrique (6).
  5. Assemblage (2) de borne électrique selon la revendication 4, caractérisé en ce que l'ouverture (36) située dans les moyens isolants (8) de recouvrement présentent un premier diamètre dans la première partie extrême (38), et un second diamètre dans la seconde partie extrême (40), le premier diamètre étant essentiellement égal au diamètre du conducteur (6) dont l'isolant est enlevé, et le second diamètre étant essentiellement égal au diamètre du conducteur dont l'isolant reste, assurant ainsi la présence de seulement une quantité minimale d'air entre le conducteur et les moyens isolants (8) de recouvrement.
  6. Assemblage (2) de borne électrique selon la revendication 1, caractérisé en ce que le moyen (34) à sertir sur un fil est une plaque métallique de forme en U qui est reliée, d'une seule pièce, à la partie d'accouplement (10) de l'assemblage de borne et en fait saillie.
  7. Assemblage (2) de borne électrique selon la revendication 1, caractérisé en ce que la partie d'accouplement (10) porte une section de contact à broche.
  8. Assemblage (2) de borne électrique selon la revendication 1, caractérisé en ce que la partie d'accouplement (10) renferme une section de contact recevant une broche.
  9. Assemblage (2) de borne électrique selon la revendication 5, caractérisé en ce que l'assemblage (2) de borne électrique est situé dans un boîtier diélectrique (20) à travers lequel s'étendent des cavités (48) de réception de borne, la configuration des moyens isolants (8) de recouvrement étant dimensionnée de façon que les moyens isolants (8) de recouvrement soient positionnés dans les cavités (38) afin de n'autoriser qu'un minimum d'espaces remplis d'air dans ces cavités.
EP90901341A 1988-12-23 1989-12-15 Borne electrique pourvue de moyens pour assurer une connexion electrique fiable Expired - Lifetime EP0402451B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB888830167A GB8830167D0 (en) 1988-12-23 1988-12-23 Electrical terminal which has means to provide a reliable electrical connection
GB8830167 1988-12-23
PCT/US1989/005529 WO1990007807A1 (fr) 1988-12-23 1989-12-15 Borne electrique pourvue de moyens pour assurer une connexion electrique fiable

Publications (2)

Publication Number Publication Date
EP0402451A1 EP0402451A1 (fr) 1990-12-19
EP0402451B1 true EP0402451B1 (fr) 1996-06-05

Family

ID=10649117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90901341A Expired - Lifetime EP0402451B1 (fr) 1988-12-23 1989-12-15 Borne electrique pourvue de moyens pour assurer une connexion electrique fiable

Country Status (6)

Country Link
EP (1) EP0402451B1 (fr)
JP (1) JPH03502853A (fr)
DE (1) DE68926618T2 (fr)
ES (1) ES2087904T3 (fr)
GB (1) GB8830167D0 (fr)
WO (1) WO1990007807A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH052382U (ja) * 1991-06-24 1993-01-14 矢崎総業株式会社 端子金具
US5653612A (en) * 1995-08-15 1997-08-05 Framatome Connectors Usa Inc. Electrical contact assembly with stabilizing contact mount
US5816864A (en) * 1995-09-21 1998-10-06 Framatome Connectors Usa Inc. Connector assembly
US5934945A (en) * 1997-03-05 1999-08-10 Framatome Connectors Usa Inc. Contact retainer for retaining a contact to a housing
DE19921540A1 (de) * 1999-05-11 2000-11-16 Mannesmann Vdo Ag Verfahren zum Schutz von Kabellitzen
SE9903800L (sv) * 1999-10-21 2001-04-22 Kim Silfverberg Kabelkopplingsanordning
DE102005031424B4 (de) * 2005-07-04 2007-04-12 FRÖTEK Kunststofftechnik GmbH Batterie-Ladesystem
JP5763291B2 (ja) * 2009-07-17 2015-08-12 株式会社安川電機 回転電機

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL245395A (fr) * 1958-11-17
US4311355A (en) * 1978-10-23 1982-01-19 General Motors Corporation Weatherproof electrical connector
DE7835551U1 (de) * 1978-11-30 1979-03-22 Siemens Ag, 1000 Berlin Und 8000 Muenchen Anschlußeinrichtung für Koaxialkabel
FR2544559B1 (fr) * 1982-11-09 1985-10-25 Labinal Connecteur electrique etanche

Also Published As

Publication number Publication date
ES2087904T3 (es) 1996-08-01
DE68926618D1 (de) 1996-07-11
DE68926618T2 (de) 1996-10-02
GB8830167D0 (en) 1989-02-22
EP0402451A1 (fr) 1990-12-19
JPH03502853A (ja) 1991-06-27
WO1990007807A1 (fr) 1990-07-12

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