EP0028947A1 - Elektrische Verbindereinlage zum ausnehmbaren Aufnehmen länglicher elektrischer Kontakte und Mittel zum Formen derselben - Google Patents

Elektrische Verbindereinlage zum ausnehmbaren Aufnehmen länglicher elektrischer Kontakte und Mittel zum Formen derselben Download PDF

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Publication number
EP0028947A1
EP0028947A1 EP80401381A EP80401381A EP0028947A1 EP 0028947 A1 EP0028947 A1 EP 0028947A1 EP 80401381 A EP80401381 A EP 80401381A EP 80401381 A EP80401381 A EP 80401381A EP 0028947 A1 EP0028947 A1 EP 0028947A1
Authority
EP
European Patent Office
Prior art keywords
insert
passage
abutment
resilient clip
pin
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.)
Granted
Application number
EP80401381A
Other languages
English (en)
French (fr)
Other versions
EP0028947B1 (de
Inventor
Richard Sanford
Norman Charles Bourdon
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.)
Bendix Corp
Original Assignee
Bendix Corp
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 Bendix Corp filed Critical Bendix Corp
Publication of EP0028947A1 publication Critical patent/EP0028947A1/de
Application granted granted Critical
Publication of EP0028947B1 publication Critical patent/EP0028947B1/de
Expired 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/426—Securing by a separate resilient retaining piece supported by base or case, e.g. collar or metal contact-retention clip
    • 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
    • H01R43/18—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing bases or cases for contact members

Definitions

  • This invention relates to an electrical connector insert for removably receiving elongated electrical contacts which are respectively provided with an enlarged section defining two shoulders that face in opposite directions, said insert being provided with an integral arrangement adapted to secure within the insert a retention device for each of the electrical contacts.
  • Electrical connectors generally include a plug and a receptacle, each of which has an insert of dielectric material within which electrical contacts are retained.
  • the prior art addresses the insert means which were employed to secure electrical contact retention devices within a dielectric material and the means of molding these inserts.
  • Patent No. 3,158,424 Among the teachings of this patent is the use of a flange, encompassing a full 360°, at the rearward edge of an insert passageway that is designed to hold an electrical connector retention clip within the bored section of an insert.
  • This design contains several drawbacks which become evident in the manufacture of the insert. It is taught that this insert can be molded with an annular member that is removable or dissolvable or otherwise disposable from the molded insert.
  • problems encountered in this method of manufacture is an inexactness in the length and positioning of the metal bushing being molded into the insert. After melting the bushing away from the insert, a standard length connector retention clip may not seat properly with the result that the entire insert must be scrapped.
  • metal bushings have to be cleaned thoroughly prior to molding the bushing into the insert. If any metal-chips have not been cleaned from the bushings, they become molded into the insert and can cause electrical breakdowns within the insert.
  • Another major problem with the use of metal bushings is that oxidation and static electricity are formed on the bushings. This results in obvious handling and molding difficulties.
  • the present invention eliminates the problems encountered with electrical failures within the inserts as well as those difficulties common to the manufacturing methods now employed by providing an electrical connector insert which is integrally molded from a dielectric material and which comprises a plurality of passages which extend therethrough from a rear face to a front face, retention shoulder housings for each passage near the rear face, and a rearwardly facing abutment for each passage which reduces the bore of the passage.
  • the retention shoulder housings and abutment form the rear and frontal boundaries of a retention clip cavity.
  • Each passage allows the close passing and securing of a contact resilient retention clip between the forward facing inward wall of the shoulder housings and the rearward facing wall of the abutment.
  • the contact resilient retention clip has at least two fingers which, when mounted within an individual passage, are positioned. forwardly and radially inward to form a resilient cone.
  • Each passage of insert can be integrally molded, to incorporate all the features for the mounting of a resilient retention clip and connector pin (or connector socket) described above, by means of a herein disclosed core pin and core bushing configuration.
  • the core pin and core bushing are matable and, when mated, produce an insert passage mold which renders the shoulder housings, the retention clip cavity, the abutment, a contact sleeve and inspection openings. Once the material used to mold the insert is set, the core pin can be withdrawn from the rear face of the passage and the core bushing can be withdrawn through the contact sleeve and the inspection openings. No further tooling of the insert is required.
  • These means for molding the insert can be mounted in different numbers and patterns to suit the type of connector shell within which an insert will be mounted.
  • an electrical connector insert for removably receiving elongated electrical contacts which is simple and economical to manufacture since it minimizes the required number of pieces, which permits the removal of an individual electrical contact from a resilient retention clip while retaining said clip within it, and which is manufactured by a molding means which is immediately reusable and requires no tooling between uses.
  • FIGURE 1 illustrates a portion of an electrical connector insert that discloses one embodiment of the invention.
  • the insert 10 consists of a body molded from a dielectric material.
  • the dielectric insert_ is made from a thermoplastic resin, although other materials such as thermosetting materials may be used.
  • Some examples of preferable materials are: polyester (Valox), polyarylsulfone (B 360 Astrel), polyethersulfone (Torlon), polymides (Nylon), acetates (Deldrin), and polycarbonates (Lexan).
  • the polyester material sold under the trade name "Valox" is preferred along with polyarylsulfone and polyethersulfone.
  • the foregoing materials have acceptable mechanical strength and electrical insulation characteristics which serve to increase the dielectric separation between adjacent contacts.
  • the insert 10 has a plurality of passages 15 therethrough from a front face 11 to a rear face 13.
  • the front face. 11 being defined as that section of insert 10 which faces toward an engaged connector assembly, and the rear face 13 as that side of the insert 10 opposite front face 11.
  • the insert 10 has along the rear face of passage 15 and extending forwardly and inwardly along the wall of passage 15 at least two retention clip shoulder housings 17.
  • the shoulder housings 17 have a vertical inward edge 19 which faces an abutment 21.
  • the section of passage 15 defined by the vertical inward edge 19 of shoulder housings 17 and abutment 21 forms a cavity 23 within which a retention clip 29 is removably secured.
  • the horizontal surface of shoulder housings 17 may be either flat, plate-like surfaces angled away from a central line as shown in the drawings or semicircular in shape.
  • the vertical inward edge 19 of shoulder housings 17 can be angled rearwardly from the foregoing horizontal edge of the shoulder housings 17 to the wall of the passage 15. This configuration will provide a lip in the shoulder housing that will engage the rear edge of clip 29.
  • the abutment 21 contains a contact sleeve 25 which completes the passage 15 within the integrally molded dielectric insert.
  • abutment 21, rather than presenting a surface perpendicular to the wall of passage 15, could be angled forward from the contact sleeve 25 to the wall of passage 15. This would provide a recessed lip that engages the forward edge of the retention clip.
  • FIGURE 1 Also shown in FIGURE 1 are a plurality of openings 27 which are created during the molding process herein disclosed. These openings 27 provide a means through which the visual inspection of the forward seating and alignment of contact retention clips 29 is possible.
  • the shoulder housings 17 do not form a complete 360° lip at the rear face 13 of insert 10. Rather,the shoulder housings 17 are in axial alignment with openings 27 and form a partial lip along the rear face 13 of insert 10. An additional benefit of this design is the capability of examining the insert vertical edge 19 of shoulder housings 17 through the openings 27.
  • FIGURE 2 which is another partial view of the electrical connector insert 10, shows a contact retention clip 29 installed within the cavity 23 of the passage 15.
  • clip 29 is not a completely enclosed cylinder, but rather has an opening along one full side. This opening permits a clip of resilient material to be slightly compressed in order to slide the clip between the shoulder housings 17 (only one shown in drawings) into the clip cavity 23.
  • the retention clip 29 returns to its rest condition and is restricted in its lateral movement within the insert 10 by means of vertical edge 19 and the sleeve abutment 21.
  • the fingers 31 of retention clip 29 are sections of the clip's 29 wall which point downwardly and forwardly forming a cone like configuration within the cavity 23.
  • FIGURE 3 the manner according to which a pin contact is removably secured within the body of insert 10 is illustrated. Additionally illustrated is a contact retention clip 29 mounted within the cavity 23 of passage 15, being restricted from rotational movement within the cavity 23 by means of a key 32 which extends axially along the wall of cavity 23 and engages the retention clip 29. More precisely, a connector pin 33 enters through the rear face 13 of insert 10 and passes between the opposed shoulder housings 17. As connector pin 33 passes between the fingers 31 of retention clip 29, an enlarged section 37 of connector pin 33 pushes the fingers 31 out away from the center of the cavity, permitting the enlarged section 37 complete entry.
  • FIGURE 4 is an alternative embodiment of the invention which relates to an insert 10' which is designed to receive and removably secure a socket contact 43.
  • the principal difference lies in a socket bore 45 which rests between the front face of contact sleeve 25' and the abutment 21'.
  • a contact retention clip 29' is removably mounted within the cavity 23' of insert 10' and restricted from longitudinal movement within the cavity 23' by abutment 21' and the vertical insert edge 19' of shoulder housings 17'.
  • abutment 21' would be the same surface as the rearward face 47' of the contact sleeve 25' in the assembly employed for a contact pin 33, as displayed in FIGURES 1 through 3, the abutment 21' is now a separate entity.
  • the rear face 47' of contact sleeve 25' can be sloped rearwardly from the walls of socket bore 45 to serve as a guide for a penetrating connector pin terminal element 35.
  • a socket contact is removably secured by the retention clip 29' within the insert 10' with the same technique as depicted in FIGURE 3.
  • the insert 10' with a retention clip 29' and a connector socket 43 can be seen in this configuration in FIGURE 10.
  • FIGURE 5 illustrates a core pin 53 and a core bushing 61.
  • the core pin 53 includes, at its forward edge, axial projection 55, at least two indented flat sides 57 and two shoulder forms 59 protruding from the rearward portion of the flat sides 57 and contiguous'with the rear base s e c-tion 51 of core pin 53.
  • Core bushing 61 includes an axial bore 63, which is matable with the axial projection 55 and side fins 65 which have flat internal walls and curved exterior walls and are matable with the flat sides 57 of the core pin 53. In the mated condition of FIGURE 6, the rearwardly facing edges of the side fins 65 will abut the forward edge of shoulder forms 59.
  • the combination of the side fins 65 with the flat sides 57 will form a shaft like section of the mold which forms the contact retention clip cavity 23 in insert 10.
  • This open area 69 forms the front face 11 and the abutment 21 of the passage 15.
  • the axial projection 55 forms the contact sleeve 25 of insert 10.
  • the shoulder forms 59 form a shoulder housing mold area 67. This corresponds to the shoulder housings 17.
  • the rearward edges of side fins 65 control the angle, if any, of the shoulder housings' vertical inward edge 19.
  • Those sections of the side fins 65 which are in a spaced relationship adjacent to axial projection 55 form the openings 27 seen in the inserts front face 11.
  • the core pin 53 and core bushing 61 can be separated and withdrawn from the insert 10. Core pin 53 is drawn out through the rear face 13 of insert 10.
  • Core bushing .61 is drawn from the front face 11 of insert 10 and leaves the opening 27.
  • This groove would extend along the length of the member on which it was cut, axially from a point corresponding with the forward edge of core pin 53 to a point corresponding with the forward edge of the shoulder forms 59. This will leave a protruding key within the cavity 23 integral with insert 10 which would align with the contact retention clip 29 when assembled. Such a design would allow a fixed location of the retention clip fingers 31 relative to the enlarged section 37 of the pin contact 33.
  • These features can similarly be incorporated in the core pin and core bushing presented in FIGURES 7 and 8 which are employed in molding an insert 10' used with socket contact 43.
  • These core pin 53 and core bushing 61 can be multiply mounted in an endless variety of configurations as dictated by the number of contacts required and the dimensions of the plug in which the inserts are mounted.
  • FIGURE 7 illustrates a core pin 53' and a core bushing 61' which are utilized in the molding of an integral dielectric insert 10'.
  • the core pin 53' includes a base portion 51' from which extends a shaft like portion which terminates in its forward end with axial projection 55'. At least two sides 57' of the shaft like portion are indented and flat. In addition, a portion of this shaft has a reduced diameter which results in stepped sides 73. Also protruding from the flat sides 57' and in a contiguous relationship with the base 51' are shoulder forms 59'.
  • the core bushing 61' includes at least two extending side fins 65' which are flat along their inside walls and curved along their outside walls, an axial bore 63' and a protruding cone 71.
  • the core pin 53' and core bushing 61' mate with the axial projection 55' penetrating the cone 71 through axial bore 63'.
  • Side fins 65' will abut the shoulder forms 59' and be aligned with and contiguous to the flat sides 57' of core pin 53'. This will provide a cavity 23' in the completed insert 10'. With this mated alignment there will be an open area 69' around the axial projection 55' which will form the front face 11" and the rearward face 47 ' of contact sleeve 25'.
  • the axial projection 55' results in the contact sleeve 25'.
  • the cone 71 creates a tapering extension with a cone-shaped mouth on the rearward face 47'.
  • the cone shaped mouth can serve as a guide for the introduction of a pin contact terminal element 35.
  • the steps 73 of core pin 51' form within the insert 10' a socket bore 45 which closely receives a socket contact.
  • the vertical wall created by the different dimensions of step 73 and core pin 53' provides an abutment 21' within insert 10'.
  • the section of the flat sides 57' contiguous with side fins 65' forms cavity 23' designed to receive a retention clip 29'.
  • the shoulder forms 59', along'with the portions of side fins 65' contiguous with the shoulder forms 59', ' form the shoulder housings 17' and vertical inward edge 19' of insert 10'. It should be noted that the modifications which can be introduced to core pin 53 and core bushing 61 are among the modifications which can be effected on core pin 53' and core bushing 61'.
  • FIGURE 9 illustrates an insert 10 that contains a plurality of connector pins 33 secured by retention clips 29.
  • the insert 10 is mounted in a typical electrical connector plug assembly 77. Also shown are a rear moisture sealing grommet 79, an interfacial seal 91, a sealing gasket 93, a connector shell 81, a retaining nut 83 and a retaining ring 95.
  • FIGURE 10 illustrates an integral dielectric insert 10' with connector socket 43 and contact retention clip 29' in a conventional socket assembly 77' which is matable with the conventional pin connector assembly of FIGURE 9. Also shown are a rear moisture sealing grommet 79', a connector shell 81', a retaining nut 83', a retaining ring 95', a coupling nut 85, a wave washer 87 and a snap ring 89.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
EP80401381A 1979-11-07 1980-09-30 Elektrische Verbindereinlage zum ausnehmbaren Aufnehmen länglicher elektrischer Kontakte und Mittel zum Formen derselben Expired EP0028947B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9213279A 1979-11-07 1979-11-07
US92132 1979-11-07

Publications (2)

Publication Number Publication Date
EP0028947A1 true EP0028947A1 (de) 1981-05-20
EP0028947B1 EP0028947B1 (de) 1984-06-06

Family

ID=22231784

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80401381A Expired EP0028947B1 (de) 1979-11-07 1980-09-30 Elektrische Verbindereinlage zum ausnehmbaren Aufnehmen länglicher elektrischer Kontakte und Mittel zum Formen derselben

Country Status (4)

Country Link
EP (1) EP0028947B1 (de)
JP (1) JPS5676178A (de)
CA (1) CA1146646A (de)
DE (1) DE3068122D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0280973A2 (de) * 1987-03-02 1988-09-07 Burndy Corporation Steckverbinder-Anordnung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6191885A (ja) * 1984-10-11 1986-05-09 日電商工株式会社 ケ−ブルコネクタ−のコンタクト抜け止め装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158424A (en) * 1964-02-13 1964-11-24 Itt Contact mounting
US3721943A (en) * 1969-01-21 1973-03-20 Deutsch Co Elec Comp Electrical connecting device
DE2816472A1 (de) * 1977-04-18 1978-10-19 Itt Ind Gmbh Deutsche Verfahren zur herstellung des isolierkoerpers eines elektrischen verbinders

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158424A (en) * 1964-02-13 1964-11-24 Itt Contact mounting
US3721943A (en) * 1969-01-21 1973-03-20 Deutsch Co Elec Comp Electrical connecting device
DE2816472A1 (de) * 1977-04-18 1978-10-19 Itt Ind Gmbh Deutsche Verfahren zur herstellung des isolierkoerpers eines elektrischen verbinders

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0280973A2 (de) * 1987-03-02 1988-09-07 Burndy Corporation Steckverbinder-Anordnung
EP0280973A3 (de) * 1987-03-02 1990-05-02 Burndy Corporation Steckverbinder-Anordnung

Also Published As

Publication number Publication date
EP0028947B1 (de) 1984-06-06
JPS5676178A (en) 1981-06-23
DE3068122D1 (en) 1984-07-12
CA1146646A (en) 1983-05-17

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