US3824523A - Contact retention assembly - Google Patents

Contact retention assembly Download PDF

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Publication number
US3824523A
US3824523A US00371958A US37195873A US3824523A US 3824523 A US3824523 A US 3824523A US 00371958 A US00371958 A US 00371958A US 37195873 A US37195873 A US 37195873A US 3824523 A US3824523 A US 3824523A
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US
United States
Prior art keywords
contact
passage
facing shoulder
connector assembly
set forth
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
US00371958A
Inventor
Ghee M Mc
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries 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
Priority to GB665071A priority Critical patent/GB1362265A/en
Priority to FR7208156A priority patent/FR2128759A1/fr
Priority to US00328186A priority patent/US3824524A/en
Application filed by Deutsche ITT Industries GmbH filed Critical Deutsche ITT Industries GmbH
Priority to US00371958A priority patent/US3824523A/en
Application granted granted Critical
Publication of US3824523A publication Critical patent/US3824523A/en
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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • 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
    • H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
    • 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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/627—Snap or like fastening
    • H01R13/6271—Latching means integral with the housing
    • 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
    • H01R13/42—Securing in a demountable manner
    • H01R13/428—Securing in a demountable manner by resilient locking means on the contact members; by locking means on resilient contact members
    • H01R13/432—Securing in a demountable manner by resilient locking means on the contact members; by locking means on resilient contact members by stamped-out resilient tongue snapping behind shoulder in base or case
    • 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
    • H01R13/50—Bases; Cases formed as an integral body
    • 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
    • H01R13/64—Means for preventing incorrect coupling

Definitions

  • ABSTRACT Continuation of Ser. No. 233,622, March 10, 1972,
  • the invention relates in general to latched electrical connectors and, more particularly, to rear releasable electrical connectors.
  • an electrical connector assembly which includes a first connector element and a second connector element.
  • the two elements can be fitted together with the contacts in said first element in engagement with the contacts in said second element.
  • the outer casing of the first element fits snugly into the outer casing of the second element when the two elements are mated, and the two connector elements are held in the mated position by latch means.
  • the latch means includes a plurality of latches each comprising a generally T-shaped latch member formed integral with the outer casing of one of the elements and are joined thereto by a shank forming the upright of the T.
  • One of the arms of the T has a hook which when the elements are mated fits behind a rear-facing shoulder on the other of said elements.
  • the other arm of each said T acts as a lever which when depressed rocks the T to disengage its hook to allow the elements to be unmated.
  • a socket connector element 1 and a plug connector element 2 each of which can accommodate twelve contacts in three rows each of four contacts.
  • the socket element has a rubber grommet 3 at its rear which fits into the contact supporting member or biscuit 4.
  • This contact has a collar 6 between its ends which provides a front shoulder for engagement with the shoulder 5 and a rear shoulder.
  • the biscuit also has, for each contact bore, a set of tines, three in the case shown, one of which is shown in section at 7 and another is shown at 8. These are formed integral with the-biscuit, and act as retainers in the rearward direction for a contact when the latter, with a wire soldered to it, is in place in the bore.
  • the grommet has an external groove which receives an internal collar on the inside of an end shell 9.
  • the arrangements for the contacts on the plug side are generally similar to those for the socket side, as can be seen from the drawing.
  • an O ring 10 in the plug element is compressed to form a good seal and the elements are held together by two or more latches.
  • One of these latches is shown in detail and it includes a generally T-shaped portion 11 which is integral with the outer casing of the-socket element.
  • This T has a short shank, and its front arm has an inwardly facing hook which, in the mated condition fits behind a rear-facing shoulder 12 on the plug element.
  • the rear arm of the'T is depressed, which rocks the T about its shank, thus unlatching.
  • two such. latches are fitted, the other being indicated at 13.
  • connectors such as circular connectors are also possible.
  • two or more latches disposed round the circumference of the casing.
  • An electrical connector assembly comprising:-
  • a one-piece unitary body of insulation material having a plurality of passages extending therethrough from a front face to a rear face;
  • each'said contact being insertable from the rear of said body into its corresponding passage and having an enlarged section defining a rearwardly facing shoulder;
  • stop means associated with each said passage engageable with said rearwardly facing shoulder for limiting rearward movement of said contact when said contact is in the most forward position in said passage permitted by said movement limiting means;
  • the inner surface of the rear section of said part flares outwardly to provide an entrance ramp for insertion of the contact into the passage from the rear.
  • said movement limiting means comprises a rearwardly facing shoulder in each passage engageable by said contact forwardly facing shoulder.
  • a connector assembly as set forth in claim 1 including:
  • a resilient grommet adjacent to said rear face of said body having passages therethrough in axial alignment with said passages in said body.
  • said part is formed with a forwardly facing shoulder engageable with said rearwardly facing shoulder of said contact enlarged section.
  • an electrical connector assembly having a body of insulation material formed with a plurality of passages therethrough, each receiving an electrical contact.
  • the contacts are insertable into the passages from the rear of the body and are also removable from the rear of the body.
  • a plurality of integral, resilient tines extend rearwardly from the rear face of the body around each contact passage.
  • the tines are formed with forwardly facing shoulders whichabut against a collar on the contact to restrain the contact from rearward movement in the passage in which it is mounted.
  • the tines may be expanded by suitable tool to permit the contact to be removed from the rear of the passage.”

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)

Abstract

A two-part connector assembly wherein the elements are latched together by a latch on one element which latches to a notch on the other element. The latch, in cross-section, is T-shaped. To release, pressure is applied to one arm of the T to rock it about the shank of the T, which is integral with the casing. The contacts are rear-clip insertion and extraction types, with the tines for contact retention integral with the inside of the bore in which the contact is located.

Description

Unlted States Patent 1191 1111 3,824,523 McGhee July 16, 1974 15 1 CONTACT RETENTION ASSEMBLY 3,648,213 3/1972 Kobler 339/59 R [75] Inventor: Michael J. McGhee, Basingstoke,
England [73] Assignee: ITT Industries, Inc., New York,- Examiner"j9seph McGlynn Attorney, Agent, or Firm-C. Cornell Remsen, Jr. [22] Filed: June 21, 1973 [21] App]. N0.: 371,958
Related US. Application Data [57] ABSTRACT [63] Continuation of Ser. No. 233,622, March 10, 1972,
abandoned A two-part connector assembly wherein the elements [30] Foreign Application Priority Data are latched together by a latch on one element which Mar. 12, 1971 Great Britain 6650/71 latches to a notch the Other elemem- The lamb, in
' cross-section, is T-shaped. To release, pressure is ap- U.S. Cl. R, R t one arm of the T to rock it about the Shank of [5 l] lltt. Cl. th "F hi h i i teg al with the casing The contacts Fleld Search ar rea gclip insertion and extraction types, with the 339/91, 217 tines for contact retention integral with the inside. of
the bore in which the contact is located. [56] References Cited UNITED STATES PATENTS 3,165,369 1/1965 Maston 339/59 R 8 Claims, 1 Drawing Figure This is a continuation of application Ser. No. 233,622, filed Mar. 10, 1972, and now abandoned.
CROSS REFERENCE TO RELATED APPLICATIONS FIELD OF THE INVENTION The invention relates in general to latched electrical connectors and, more particularly, to rear releasable electrical connectors.
SUMMARY OF THEINVENTION According to the present invention there is provided I an electrical connector assembly which includes a first connector element and a second connector element. The two elements can be fitted together with the contacts in said first element in engagement with the contacts in said second element. The outer casing of the first element fits snugly into the outer casing of the second element when the two elements are mated, and the two connector elements are held in the mated position by latch means. The latch means includes a plurality of latches each comprising a generally T-shaped latch member formed integral with the outer casing of one of the elements and are joined thereto by a shank forming the upright of the T. One of the arms of the T has a hook which when the elements are mated fits behind a rear-facing shoulder on the other of said elements. The other arm of each said T acts as a lever which when depressed rocks the T to disengage its hook to allow the elements to be unmated.
The advantages of the invention, both as to its construction and mode of operation, will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawing.
BRIEF DESCRIPTION OF THE DRAWING DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the drawing there is shown a socket connector element 1 and a plug connector element 2, each of which can accommodate twelve contacts in three rows each of four contacts. The socket element has a rubber grommet 3 at its rear which fits into the contact supporting member or biscuit 4. As can be seen, there are aligned contact receiving bores in the grommet and the biscuit, and for each bore the latter has a shoulder 5 which locates the contact when pushed forward into the bore. This contact has a collar 6 between its ends which provides a front shoulder for engagement with the shoulder 5 and a rear shoulder. The biscuit also has, for each contact bore, a set of tines, three in the case shown, one of which is shown in section at 7 and another is shown at 8. These are formed integral with the-biscuit, and act as retainers in the rearward direction for a contact when the latter, with a wire soldered to it, is in place in the bore. As can be seen, the grommet has an external groove which receives an internal collar on the inside of an end shell 9.-
The arrangements for the contacts on the plug side are generally similar to those for the socket side, as can be seen from the drawing.
Contacts when wiredup are inserted into the bores from the rear side thereof and when contact removal is called for the end shell such as 9 is removed by undoing a clamp (not shown). Then a contact is removed by fitting the end of a split tubular tool over the contacts wire and pushing the tool into the bore so that it slides between the wire and the inside of the grommet until it abuts the rear shoulder of the collar 6. In this position it deflects the tines 7 outwardly so that the wire and the contact and the tool can be withdrawn rearwardly. Insertion uses a similar tool which is used to guide the contact and wire through the grommet as far as the stop shoulder 5. I
When the elements are mated as shown, an O ring 10 in the plug element is compressed to form a good seal and the elements are held together by two or more latches. One of these latches is shown in detail and it includes a generally T-shaped portion 11 which is integral with the outer casing of the-socket element. This T has a short shank, and its front arm has an inwardly facing hook which, in the mated condition fits behind a rear-facing shoulder 12 on the plug element. To unlatch, the rear arm of the'T is depressed, which rocks the T about its shank, thus unlatching. In the rectangular assembly shown, two such. latches are fitted, the other being indicated at 13.
Other shapes of connector such as circular connectors are also possible. In this case one can use two or more latches disposed round the circumference of the casing.
What is claimed is:
1. An electrical connector assembly comprising:-
a one-piece unitary body of insulation material having a plurality of passages extending therethrough from a front face to a rear face;
an electrical contact positioned axially in each of said passages, each'said contact being insertable from the rear of said body into its corresponding passage and having an enlarged section defining a rearwardly facing shoulder;
means within each said passage limiting movement of the respective contact therein toward the front end of said passage;
stop means associated with each said passage engageable with said rearwardly facing shoulder for limiting rearward movement of said contact when said contact is in the most forward position in said passage permitted by said movement limiting means;
through upon forward insertion of the contact into said passage, said part contracting behind said contact rearwardly facing shoulder when said contact is in said forward position, and said contact being removable from the passage from the rear of said body by expanding said part sufficiently to permit said contact enlarged section to pass rearwardly therethrough. 2. A connector assembly as set forth in claim 1 wherein:
the inner surface of the rear section of said part flares outwardly to provide an entrance ramp for insertion of the contact into the passage from the rear.
claim 1 defining a forwardly facing shoulder; and
said movement limiting means comprises a rearwardly facing shoulder in each passage engageable by said contact forwardly facing shoulder.
6. A connector assembly as set forth in claim 1 including:
a resilient grommet adjacent to said rear face of said body having passages therethrough in axial alignment with said passages in said body.
7. A connector assembly as set forth in claim I wherein:
said part is formed with a forwardly facing shoulder engageable with said rearwardly facing shoulder of said contact enlarged section.
8. A connector assembly as set forth in claim 7 wherein:
the inner surface of the section of said part forward of said forwardly facing shoulder thereon forms a continuation of the wall of said passage.
g UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,824,523 Dated July 16; 1974 Inventor(s) Michael I. McGhee It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
Col. l, line l4, cancel "latched" Col. l, lines 20-37, cancel and substitute the following:
--an electrical connector assembly having a body of insulation material formed with a plurality of passages therethrough, each receiving an electrical contact. The contacts are insertable into the passages from the rear of the body and are also removable from the rear of the body.
A plurality of integral, resilient tines extend rearwardly from the rear face of the body around each contact passage. The tines are formed with forwardly facing shoulders whichabut against a collar on the contact to restrain the contact from rearward movement in the passage in which it is mounted. The tines may be expanded by suitable tool to permit the contact to be removed from the rear of the passage."-
Signed and sealed this 20th day of May 1975.
(SEAL) Attest:
' C. MARSHALL DANN' RUTH C. MASON Commissioner of Patents Attesting Officer and Trademarks

Claims (8)

1. An electrical connector assembly comprising: a one-piece unitary body of insulation material having a plurality of passages extending therethrough from a front face to a rear face; an electrical contact positioned axially in each of said passages, each said contact being insertable from the rear of said body into its corresponding passage and having an enlarged section defining a rearwardly facing shoulder; means within each said passage limiting movement of the respective contact therein toward the front end of said passage; stop means associated with each said passage engageable with said rearwardly facing shoulder for limiting rearward movement of said contact when said contact is in the most forward position in said passage permitted by said movement limiting means; said stop means for each said passage comprising a part of said unitary body extending rearwardly from said rear face to circumferentially spaced locations about said passage; and said part being resiliently radially expandable to permit said contact enlarged section to pass therethrough upon forward insertion of the contact into said passage, said part contracting behind said contact rearwardly facing shoulder when said contact is in said forward position, and said contact being removable from the passage from the rear of said body by expanding said part sufficiently to permit said contact enlarged section to pass rearwardly therethrough.
2. A connector assembly as set forth in claim 1 wherein: the inner surface of the rear section of said part flares outwardly to provide an entrance ramp for insertion of the contact into the passage from the rear.
3. A connector assembly as set forth in claim 1 wherein: each said contact has a rear section behind said enlarged section extending rearwardly from said rear face of said body; and said part engages said contact rear section.
4. A connector assembly as set forth in claim 1 wherein: said part comprises a plurality of circumferentially spaced tines.
5. A connector assembly as set forth in claim 1 wherein: each said contact enlarged section comprises a collar defining a forwardly facing shoulder; and said movemEnt limiting means comprises a rearwardly facing shoulder in each passage engageable by said contact forwardly facing shoulder.
6. A connector assembly as set forth in claim 1 including: a resilient grommet adjacent to said rear face of said body having passages therethrough in axial alignment with said passages in said body.
7. A connector assembly as set forth in claim 1 wherein: said part is formed with a forwardly facing shoulder engageable with said rearwardly facing shoulder of said contact enlarged section.
8. A connector assembly as set forth in claim 7 wherein: the inner surface of the section of said part forward of said forwardly facing shoulder thereon forms a continuation of the wall of said passage.
US00371958A 1971-03-12 1973-06-21 Contact retention assembly Expired - Lifetime US3824523A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB665071A GB1362265A (en) 1971-03-12 1971-03-12 Electrical connectors
FR7208156A FR2128759A1 (en) 1971-03-12 1972-03-09
US00328186A US3824524A (en) 1971-03-12 1973-01-31 Electrical connector assembly
US00371958A US3824523A (en) 1971-03-12 1973-06-21 Contact retention assembly

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB665071A GB1362265A (en) 1971-03-12 1971-03-12 Electrical connectors
US23362272A 1972-03-10 1972-03-10
US00371958A US3824523A (en) 1971-03-12 1973-06-21 Contact retention assembly

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US3824523A true US3824523A (en) 1974-07-16

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US00328186A Expired - Lifetime US3824524A (en) 1971-03-12 1973-01-31 Electrical connector assembly
US00371958A Expired - Lifetime US3824523A (en) 1971-03-12 1973-06-21 Contact retention assembly

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US00328186A Expired - Lifetime US3824524A (en) 1971-03-12 1973-01-31 Electrical connector assembly

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FR (1) FR2128759A1 (en)
GB (1) GB1362265A (en)

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Also Published As

Publication number Publication date
GB1362265A (en) 1974-08-07
FR2128759A1 (en) 1972-10-20
US3824524A (en) 1974-07-16

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