High voltage contact assembly

• US 4,834,678 A
• Filed: 05/31/1988
• Issued: 05/30/1989
• Est. Priority Date: 05/31/1988
• Status: Expired due to Fees

• Current Assignee: AMP Incorporated (Johnson Controls International plc)
• Original Assignee: AMP Incorporated (Johnson Controls International plc)
• Inventors: Emadi, Athahusain, Mignogna, Daniel J.
• Primary Examiner(s): Paumen, Gary F.
• Application Number:
  US07/200,397
• Time in Patent Office: 364 Days
• Field of Search: 439/686, 439/695, 439/701, 439/744, 439/745, 439/752, 439/281
• US Class Current: 439/701
• CPC Class Codes: H01R 13/53 Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing

Abstract

A kit for assembling an electrical connector for high voltage connections has only a pin contact terminal crimpable to a stripped conductor wire, a socket contact terminal crimpable to a stripped conductor wire, a terminal housing subassembly into which the crimped pin contact terminal is insertable, a terminal housing subassembly into which the crimped socket contact terminal is insertable, and connector housings having passageways into which the housing subassemblies are insertable. Each housing subassembly includes a rearward section extending rearwardly from the termination of the stripped conductor wire to the terminal and along a length of the insulated conductor, to establish a long voltage leakage path for minimizing corona discharge events during in-service use. Each housing subassembly contains a retention clip therewithin to secure the terminal upon insertion, and also includes another retention clip therearound to retain the housing subassembly within the connector housing upon insertion into a housing passageway. The housing subassemblies include matable forward hood sections surrounding the pin and socket contact sections and establishing a long voltage leakage path along the connector mating face.

Claims

1. A connector assembly suitable for high voltage applications to connect electrical conductors having conductor wires therein, comprising:

first and second terminal means including respective first and second termination sections at rearward ends thereof adapted to be crimped to stripped ends of respective conductor wires, said first and second terminal means further including first and second contact sections at respective forward ends thereof adapted to matingly engage each other, and said first and second terminal means including first and second forwardly facing stop means disposed forwardly of said first and second termination sections and first and second rearwardly facing stop means disposed rearwardly from said first and second forwardly facing stop means and forwardly of said first and second termination section;

first and second terminal housing subassembly means associated with said first and second terminal means respectively and including a respective first and second passageway extending from a rearward end to a forward end thereof within which a respective said first and second terminal means is disposed, said first and second terminal housing subassembly means including first and second rearwardly facing stop means cooperable with said first and second forwardly facing stop means of said first and second terminal means respectively to prevent axially forward movement of the terminal means, each of said first and second terminal housing subassembly means further including an enlarged passageway portion remote from said rearward and forward ends within which is disposed a first retention means between forward and rearward ends of said enlarged passageway portion in a manner preventing axially forward and axially rearward movement therealong, each said first retention means including inwardly and forwardly directed lances stoppingly engageable with a corresponding said rearwardly facing stop means of a respective one of said first and second terminal means to prevent axially rearward movement of said respective terminal means after full insertion of said respective terminal means into said terminal housing subassembly means, each said first and second terminal housing subassembly means including a second retention means secured therearound, each said second retention means including a forward end extending forwardly and radially inwardly to engage a rearwardly facing stop means around said terminal housing subassembly means and further including a rearward end spaced radially outwardly from said terminal housing subassembly means;

said first and second terminal means, when crimped to respective said conductor wires and inserted into said first and second terminal housing subassembly means, defining first and second terminal assemblies respectively;

first and second connector housing means including first and second terminal assembly-receiving passageways extending from a rearward face to a mating face thereof, said passageways receiving therein respective ones of said first and second terminal assemblies form said rearward face and including forwardly facing stop surfaces therealong cooperable with respective said rearward ends of said second retention means secured around respective said terminal housing subassembly means; and

means for securing said first and second terminal assemblies within respective said first and second terminal assembly-receiving passageways of said first and second connector housing means against axially forward movement;

each of said first and second terminal housing subassembly means including a respective first and second hood section extending forwardly and surrounding said first and second contact section of a respective said first and second terminal means after full insertion of the terminal means thereinto, a respective first and second rearward section extending rearwardly and surrounding a respective said first and second termination section and extending still farther rearwardly surrounding an insulated length of the conductor to which the respective terminal means is crimped, whereby

a connector assembly is defined which is adapted to minimize corona discharge events and thereby be suitable for high voltage applications.

2. A connector assembly as set forth in claim 1 wherein said second retention means is a C-shaped spring clip member crimpingly secured to said first and second terminal housing subassembly means respectively within respective annular clip receiving recesses thereof.

3. A connector assembly as set forth in claim 1 wherein said means for securing said first and second terminal assemblies within said first and second terminal assembly-receiving passageways against axially forward movement comprises a forwardly facing shoulder of said rearward section of said first and second terminal housing subassembly means cooperable with said rearward face of a respective one of said first and second connector housing means, said rearward section being dimensioned larger than the diameter of the assembly-receiving passageway.

4. A connector assembly as set forth in claim 3 wherein said first and second terminal assembly-receiving passageways of said first and second connector housing means each consist only of a larger diameter passageway portion extending rearwardly from said mating face of said housing means and a smaller diameter passageway portion extending forwardly from said rearward face thereof meeting said larger diameter passageway and defining said forwardly facing stop surfaces thereat, facilitating the molding of said first and second connector housing means molded as one-part dielectric members respectively.

5. A connector assembly as set forth in claim 1 wherein said first and second terminal housing subassembly means each comprises dielectric forward and rearward housing members sealingly secured together, said forward housing member including a rearwardly extending flange section having a selected outer diameter and an inner diameter selected to be slightly larger than the corresponding portion of a respective said terminal means to be disposed therewithin thereby defining an enlarged passageway portion, and said rearward housing member including a forwardly extending flange section defining a cavity therein having a transverse rearward end and an inner diameter just larger than said selected outer diameter of said rearwardly extending flange section of said forward housing member so that said cavity receives said rearwardly extending flange section insertably thereinto whereafter said forward and rearward housing members are bonded together along the interface between said forwardly and rearwardly extending flange sections, said cavity rearward end defining a forwardly facing stop surface, and said enlarged passageway portion including a rearwardly facing stop surface at its forward end whereby an internal recess is defined for retaining said first retention means therewithin.

6. A connector assembly as set forth in claim 5 wherein said first retention means is a C-shaped spring clip member secured within said internal recess of each said first and second terminal housing subassembly means prior to insertion of a respective said first and second terminal means thereinto, said C-shaped spring clip member originally having an outer diameter larger than said inner diameter of said internal recess.

7. A connector assembly as set forth in claim 1 wherein said first contact section is a pin and said second contact section is a socket matable with said pin, said first hood section includes a cavity surrounding said pin forwardly of a small diameter passageway portion, said small diameter passageway portion comprising said first rearwardly facing stop means cooperable with a larger diameter terminal portion just rearwardly of said pin contact section, said cavity having a diameter selected to be just larger than the outer diameter of said second hood section whereby said first hood section extends along the outer surface of said second hood section defining a substantially long voltage leakage path.

8. A connector assembly as set forth in claim 7 wherein said first hood section includes a tapered lead-in surface at and around the inner edge of the forward end thereof, and said second hood section includes a tapered lead-in surface at and around the outer edge of the forward end thereof, facilitating mating.

9. A connector assembly as set forth in claim 7 wherein said second hood section includes a forward section having a reduced inner diameter defining said second rearwardly facing stop means cooperable with a forward end of said socket contact section to prevent axially forward movement of said second terminal means within said second terminal housing subassembly after full insertion.

10. A connector assembly as set forth in claim 9 wherein said second hood section includes a tapered surface extending inwardly and rearwardly to comprise a means for aligning said pin during mating engagement.

11. A kit of parts for assembling an electrical connector for high voltage connections of first and second conductor wires, comprising:

a pin contact terminal crimpable to a stripped end of a first conductor wire;

a socket contact terminal crimpable to a stripped end of a second conductor wire;

a first terminal housing subassembly having a first terminal-receiving passageway into which the crimped pin contact terminal is insertable to define a first terminal assembly;

a second terminal housing subassembly having a second terminal-receiving passageway into which the crimped socket contact terminal is insertable to define a second terminal assembly; and

first and second connector housings having terminal assembly-receiving passageways into which said first and second terminal assemblies are insertable respectively;

each of said first and second terminal housing subassemblies containing a first retention clip therewithin to secure by cooperating stop means a respective said pin and socket, contact terminal therewithin upon insertion, and further including a second retention clip therearound to retain by other cooperating stop means the housing subassembly within a respective said passageway of a respective said first and second connector housing upon insertion of said first and second terminal housing subassembly thereinto; and

each of said first and second terminal housing subassemblies including a respective rearward section extending rearwardly from the termination of the stripped conductor wire to said pin and socket contact terminal respectively and along an insulated length of the respective said insulated conductor, to establish a long voltage leakage path for minimizing corona discharge events during in-service use.

12. A connector assembly suitable for high voltage applications to connect electrical conductors having conductor wires therein, comprising:

terminal means including respective termination sections at rearward ends thereof adapted to be crimped to stripped ends of respective conductor wires, said terminal means further including contact sections at respective forward ends thereof adapted to mate with corresponding contact sections of a mating connector, and said terminal means including forwardly facing stop means disposed forwardly of said termination sections and rearwardly facing stop means disposed rearwardly from said forwardly facing stop means;

terminal housing subassembly means associated with said terminal means respectively and including a respective passageway extending from a rearward end to a forward end thereof within which a respective said terminal means is disposed, said terminal housing subassembly means including rearwardly facing stop means cooperable with said forwardly facing stop means of said terminal means to prevent axially forward movement of the terminal means, each of said terminal housing subassembly means further including an enlarged passageway portion remote from said rearward and forward ends within which is disposed a first retention means between forward and rearward ends of said enlarged passageway portion in a manner preventing axially forward and axially rearward movement therealong, each said first retention means including inwardly and forwardly directed lances stoppingly engageable with a corresponding said rearwardly facing stop means of a respective one of said terminal means to prevent axially rearward movement of said respective terminal means into said terminal housing subassembly means, each said terminal housing subassembly means including a second retention means secured therearound, each said second retention means including a forward end extending forwardly and radially inwardly to engage a rearwardly facing stop means around said terminal housing subassembly means and further including a rearward end spaced radially outwardly from said terminal housing

said terminal means, when crimped to respective said conductor wires and inserted into said terminal housing subassembly means, defining terminal assemblies;

connector housing means including terminal assembly-receiving passageways extending from a rearward face to a mating face thereof, said passageways receiving therein respective ones of said terminal assemblies from said rearward face and including forwardly facing stop surfaces therealong cooperable with respective said rearward ends of said second retention means secured around respective said terminal housing subassembly means; and

means for securing said terminal assemblies within respective said terminal assembly-receiving passageways of said connector housing means against axially forward movement;

each of said terminal housing subassembly means including a respective hood section extending forwardly and surrounding said contact section of a respective said terminal means after full insertion of the terminal means thereinto, a rearward section extending rearwardly and surrounding a respective said termination section and extending still farther rearwardly surrounding an insulated length of the conductor to which the respective terminal means is crimped, whereby

a connector assembly is defined which is adapted to minimize corona discharge events and thereby be suitable for high voltage applications.

13. A kit of parts for assembling an electrical connector for high voltage connections of conductor wires, comprising:

at least one contact terminal crimpable to a stripped end of a conductor wire and having a contact section;

a terminal housing subassembly having a terminal-receiving passageway into which the crimped contact terminal is insertable to define a terminal assembly; and

a connector housing having terminal assembly-receiving passageways into which respective said terminal assembles are insertable;

each of said terminal housing subassemblies containing a first retention clip therewithin to secure by cooperating stop means a respective said contact terminal therewithin upon insertion thereof, and further including a second retention clip therearound to retain by other cooperating stop means the housing subassembly within a respective said passageway of said housing upon insertion of a respective said terminal housing subassembly thereinto; and

each of said terminal housing subassemblies including a respective rearward section extending rearwardly from the termination of the stripped conductor wire to said contact terminal and along an insulated length of the respective said insulated conductor, to establish a long voltage leakage path for minimizing corona discharge events during in-service use.