US3214512A - Electrical terminal assemblies - Google Patents

Electrical terminal assemblies Download PDF

Info

Publication number
US3214512A
US3214512A US414517A US41451764A US3214512A US 3214512 A US3214512 A US 3214512A US 414517 A US414517 A US 414517A US 41451764 A US41451764 A US 41451764A US 3214512 A US3214512 A US 3214512A
Authority
US
United States
Prior art keywords
bushing
housing
plate
electrical terminal
assembly
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
US414517A
Inventor
Deakin Stanley Thomas
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.)
Sealectro Corp
Original Assignee
Sealectro 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 Sealectro Corp filed Critical Sealectro Corp
Priority to US414517A priority Critical patent/US3214512A/en
Application granted granted Critical
Publication of US3214512A publication Critical patent/US3214512A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/30—Sealing
    • H01B17/303—Sealing of leads to lead-through insulators
    • H01B17/306—Sealing of leads to lead-through insulators by embedding in material other than glass or ceramics

Definitions

  • the invention concerns electrical terminal assemblies and in particular relates to an insulated lead through terminal.
  • the assembly includes a further bushing having moulded integral therewith 'a conductor pin, the said plate being adapted to receive the said further bushing, the said bushing being an interference fit in said plate and the said conductor pin including a protuberance adapted to cause an effective increase in cross-sectional dimensions of the bushing thus to prevent or hinder withdrawal thereof from the plate.
  • FIG. 1 is an exploded perspective view of an electrical terminal assembly according to the invention.
  • FIG. 2 is a longitudinal section of the arrangement shown in FIG. 1.
  • an electrical terminal assembly comprises a bushing 11 of such dimensions as initially to be an interference fit in a through hole 12a in a housing 12, a metallic plate 13 in engagement with a peripheral groove 11a in the inner radial face of the bushing and an insulated lead-through unit 14 in engagement with a through hole 13a centrally of said plate 13.
  • the bushing 11 is of polytetrafluoroethylene (PTFE) and has a radially directed peripheral flange 11b at one end thereof, such flange, when the assembly is located in position, abutting the outer surface of the housing.
  • PTFE polytetrafluoroethylene
  • the metallic plate 13 is of a diameter slightly in excess of the diameter of the channel and thus the bushing 11 is deformed slightly upon engagement therewith of the plate. Centrally of the plate 13 is the through hole 13a whilst at 90 intervals around the annulus thus formed are some four more holes 131;, said holes 13b each having a peripheral flange 13b.
  • the lead-through unit 14 comprises a conductor pin 15 moulded integral with an insulating PTFE bushing 16, said conductor pin 15 having a protuberance 15a so disposed relative to the ends thereof as to lie, when the unit 14 is in position, just inwardly of the inner surface of the plate 13.
  • the unit 14, initially is an interference fit in the through hole 13a and thus after location in such hole the deformation due to the protuberance resists Withdrawal.
  • the assembly is made up prior to application to a housing and upon such application the compression of the bushing by the walls of the hole cause a bulge to form adjacent the inner surface of the housing, the formation of such bulge being assisted by the position and relative dimensions of the plate.
  • the lead-through unit may be applied to the plate either before or after assembly as preferred.
  • the plate may be of any form as determined by the use to which it is to be applied, and may, for example, take the form of an eyelet.
  • An electrical terminal assembly to be received in a hole in a housing in interference fit relation, said assembly including a generally circular bushing of resilient insulating material and having an annular flange at its upper end to engage the upper wall of the housing and limit downward movement of the bushing into the housing, said bushing also having an internal annular recess near its lower end, a generally circular plate whose periphery is positioned within said annular recess and being of greater diameter than the recess before the plate is inserted so as to form on the outer periphery of the bushing an annular rib which engages the lower wall of the housing to restrain upward travel of the bushing, the plate having an opening therein, a lead-through unit comprising a second resilient bushing of greater diameter than said opening mounted therein in interference fit relation, and a conductor pin mounted within the latter bushing.
  • An electrical terminal assembly to be received in a hole in a housing in interference fit relation, said assembly including a generally circular bushing of resilient insulating material and having an annular flange at its upper end to engage the upper wall of the housing and limit downward movement of the bushing into the housing, and an annular rib below the housing to restrain-upward movement of the bushing, said bushing also having an internal annular recess near its lower end, a generally circular plate whose periphery is positioned within said annular recess, the plate having an opening therein, a lead-through unit comprising a second resilient bushing of greater diameter than said opening and positioned therein in interference fit relation, and a conductor pin mounted within the latter bushing.

Description

Oct. 26, 1965 s. T. DEAKIN 3,214,512
ELECTRICAL TERMINAL ASSEMBLIES Original Filed June 11, 1962 JOHN P. CHANDLER HIS ATTORNEY.
United States Patent ice 3,214,512 ELECTRICAL TERMINAL ASSEMBLIES Stanley Thomas Deakin, Walton-on-Thames, England, as-
signor to Sealectro Corporation, Mamaroneck, N.Y., a
corporation of New York Continuation of application Ser. No. 201,480, June 11,
1962. This application Nov. 23, 1964, Ser. No. 414,517 8 Claims. (Cl. 174153) This application is a continuation of application Serial Number 201,480 filed June 11, 1962 and now abandoned.
The invention concerns electrical terminal assemblies and in particular relates to an insulated lead through terminal.
It is among the objects of the present invention to provide a terminal assembly of simple form which may be readily, applied to, for example, a through hole in a housing.
According to the present invention an electrical terminal assembly adapted to be applied to a housing or the like comprises a tubular bushing, an outwardly directed peripheral flange adjacent one end, and a peripherial channel in the inner face of said bushing, and a generally circular metallic plate whose periphery is positioned within said channel, said channel being spaced axially of the bushing in relation to the flange, and said plate or like formation being of such dimensions as to cause said bushing, initially of such dimension as to be an interference or close fit in the hole in said housing, to assume .an increased cross sectional dimension inwardly of said housing thus to restrain removal therefrom, the plate being further adapted to receive electrical Wires or the like.
Preferably according to the invention the assembly includes a further bushing having moulded integral therewith 'a conductor pin, the said plate being adapted to receive the said further bushing, the said bushing being an interference fit in said plate and the said conductor pin including a protuberance adapted to cause an effective increase in cross-sectional dimensions of the bushing thus to prevent or hinder withdrawal thereof from the plate.
The invention will now be described further, by way of example only, with reference to the drawings which illustrate one particular embodiment thereof and in which:
FIG. 1 is an exploded perspective view of an electrical terminal assembly according to the invention.
FIG. 2 is a longitudinal section of the arrangement shown in FIG. 1.
Referring now to the drawings an electrical terminal assembly comprises a bushing 11 of such dimensions as initially to be an interference fit in a through hole 12a in a housing 12, a metallic plate 13 in engagement with a peripheral groove 11a in the inner radial face of the bushing and an insulated lead-through unit 14 in engagement with a through hole 13a centrally of said plate 13. The bushing 11 is of polytetrafluoroethylene (PTFE) and has a radially directed peripheral flange 11b at one end thereof, such flange, when the assembly is located in position, abutting the outer surface of the housing.
The metallic plate 13 is of a diameter slightly in excess of the diameter of the channel and thus the bushing 11 is deformed slightly upon engagement therewith of the plate. Centrally of the plate 13 is the through hole 13a whilst at 90 intervals around the annulus thus formed are some four more holes 131;, said holes 13b each having a peripheral flange 13b.
3,214,512 Patented Oct. 26, 1965 The lead-through unit 14 comprises a conductor pin 15 moulded integral with an insulating PTFE bushing 16, said conductor pin 15 having a protuberance 15a so disposed relative to the ends thereof as to lie, when the unit 14 is in position, just inwardly of the inner surface of the plate 13. The unit 14, initially is an interference fit in the through hole 13a and thus after location in such hole the deformation due to the protuberance resists Withdrawal.
In use, the assembly is made up prior to application to a housing and upon such application the compression of the bushing by the walls of the hole cause a bulge to form adjacent the inner surface of the housing, the formation of such bulge being assisted by the position and relative dimensions of the plate.
The lead-through unit may be applied to the plate either before or after assembly as preferred.
The invention is not restricted to the particular features of the embodiment hereinbefore described since alternatives will readily present themselves to one skilled in the art.
For example, the plate may be of any form as determined by the use to which it is to be applied, and may, for example, take the form of an eyelet.
What is claimed is:
1. An electrical terminal assembly to be received in a hole in a housing in interference fit relation, said assembly including a generally circular bushing of resilient insulating material and having an annular flange at its upper end to engage the upper wall of the housing and limit downward movement of the bushing into the housing, said bushing also having an internal annular recess near its lower end, a generally circular plate whose periphery is positioned within said annular recess and being of greater diameter than the recess before the plate is inserted so as to form on the outer periphery of the bushing an annular rib which engages the lower wall of the housing to restrain upward travel of the bushing, the plate having an opening therein, a lead-through unit comprising a second resilient bushing of greater diameter than said opening mounted therein in interference fit relation, and a conductor pin mounted within the latter bushing.
2. An assembly as claimed in claim 1 wherein said plate has a plurality of openings, at lea-st one of which has an integrally formed downwardly extending annular flange.
3. An assembly as claimed in claim 1 wherein said plate has a plurality of openings including a central, through opening and a plurality of eccentrically located openings with downwardly extending annular flanges.
4. An assembly as claimed in claim 1 wherein the conductor pin is molded within the second resilient bushing and is provided with a protuberance positioned Within said second resilient bushing to resist withdrawal of the pin from the second bushing.
5. An electrical terminal assembly to be received in a hole in a housing in interference fit relation, said assembly including a generally circular bushing of resilient insulating material and having an annular flange at its upper end to engage the upper wall of the housing and limit downward movement of the bushing into the housing, and an annular rib below the housing to restrain-upward movement of the bushing, said bushing also having an internal annular recess near its lower end, a generally circular plate whose periphery is positioned within said annular recess, the plate having an opening therein, a lead-through unit comprising a second resilient bushing of greater diameter than said opening and positioned therein in interference fit relation, and a conductor pin mounted within the latter bushing.
6. An assembly as claimed in claim 5 wherein said plate has a plurality of openings, at least one of which has an integrally formed, downwardly extending, annular flange.
7. An assembly as claimed in claim 5 wherein said plate has a plurality of openings including a central,
through opening and a plurality of eccentrically located openings with downwardly extending annular flanges.
8. An assembly as claimed in claim 5 wherein the conductor pin is molded within the second resilient bushing and is provided with a protuberance positioned within said second resilient bushing to resist withdrawal of the pin from the second bushing.
No references cited.
JOHN F. BURNS, Primary Examiner.

Claims (1)

1. AN ELECTRICAL TERMINAL ASSEMBLY TO BE RECEIVED IN A HOLE IN A HOUSING IN INTERFERENCE FIT RELATION, SAID ASSEMBLY INCLUDING A GENERALLY CIRCULAR BUSHING OF RESILIENT INSULATING MATERIAL AND HAVING AN ANNULAR FLANGE AT ITS UPPER END TO ENGAGE THE UPPER WALL OF THE HOUSING AND LIMIT DOWNWARD MOVEMENT OF THE BUSHING INTO THE HOUSING, SAID BUSHING ALSO HAVING AN INTERNAL ANNULAR RECESS NEAR ITS LOWER END, A GENERALLY CIRCULAR PLATE WHOSE PERIPHERY IS POSITIONED WITHIN SAID ANNULAR RECESS AND BEING
US414517A 1964-11-23 1964-11-23 Electrical terminal assemblies Expired - Lifetime US3214512A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US414517A US3214512A (en) 1964-11-23 1964-11-23 Electrical terminal assemblies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US414517A US3214512A (en) 1964-11-23 1964-11-23 Electrical terminal assemblies

Publications (1)

Publication Number Publication Date
US3214512A true US3214512A (en) 1965-10-26

Family

ID=23641797

Family Applications (1)

Application Number Title Priority Date Filing Date
US414517A Expired - Lifetime US3214512A (en) 1964-11-23 1964-11-23 Electrical terminal assemblies

Country Status (1)

Country Link
US (1) US3214512A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871937A (en) * 1971-03-18 1975-03-18 Hollingsead Pryor Enterprises Method of forming a gasket
US5116262A (en) * 1990-06-04 1992-05-26 Aeg Westinghouse Transportation Systems, Inc. Mounting system for electrical devices
US20160111931A1 (en) * 2013-05-31 2016-04-21 Top Co., Ltd. Rotary machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871937A (en) * 1971-03-18 1975-03-18 Hollingsead Pryor Enterprises Method of forming a gasket
US5116262A (en) * 1990-06-04 1992-05-26 Aeg Westinghouse Transportation Systems, Inc. Mounting system for electrical devices
US20160111931A1 (en) * 2013-05-31 2016-04-21 Top Co., Ltd. Rotary machine
US10075040B2 (en) * 2013-05-31 2018-09-11 Top Co., Ltd. Rotary machine

Similar Documents

Publication Publication Date Title
US3273104A (en) Electrical connector unit with snap-in fastener means
US3213189A (en) Fastener cap
US3083347A (en) Receptacle
US2563775A (en) Electrical socket and contact therefor
US3193613A (en) Combination conduit and wall connector device for the conduit
US3032737A (en) Connecting plug
US2667624A (en) Coil forms with ends of inslation having electrical terminals thereon
KR840005610A (en) Rib cage terminal
US2925577A (en) Terminal block connector assembly
US2742627A (en) Prong connector for printed circuits
US3214512A (en) Electrical terminal assemblies
US3343113A (en) Electrical coil assemblies
US2701273A (en) Insulating cap for pigtail connectors
US3465279A (en) Miniature pin terminal connector
US4154997A (en) Miniature multi-contact pushbutton switch
US2113328A (en) Radio tube base and socket
US4158268A (en) Electrical grill assembly and associated insulator spacer
US3171702A (en) Surface wiring system
US3221094A (en) Housing assembly for an electrical device
US2716740A (en) Explosion-proof cord connector
US3478180A (en) Rotary electric switch
US2944329A (en) Terminal clip structure
US3272908A (en) Combined cover member and mount
US3916238A (en) Electron tube socket having spark gap structure
US4199212A (en) Self sealing lamp socket