US2784386A - Electrical assembly - Google Patents

Electrical assembly Download PDF

Info

Publication number
US2784386A
US2784386A US357419A US35741953A US2784386A US 2784386 A US2784386 A US 2784386A US 357419 A US357419 A US 357419A US 35741953 A US35741953 A US 35741953A US 2784386 A US2784386 A US 2784386A
Authority
US
United States
Prior art keywords
connector
base
shield
corona
wall
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
US357419A
Inventor
Wilford C Macfadden
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.)
United Carr Fastener Corp
Original Assignee
United Carr Fastener 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 United Carr Fastener Corp filed Critical United Carr Fastener Corp
Priority to US357419A priority Critical patent/US2784386A/en
Priority to GB15296/54A priority patent/GB753395A/en
Application granted granted Critical
Publication of US2784386A publication Critical patent/US2784386A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/92—Means forming part of the tube for the purpose of providing electrical connection to it
    • H01J29/925—High voltage anode feedthrough connectors for display tubes
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/16—Fastening of connecting parts to base or case; Insulating connecting parts from base or case
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S439/00—Electrical connectors
    • Y10S439/933—Special insulation
    • Y10S439/934—High voltage barrier, e.g. surface arcing or corona preventing insulator

Definitions

  • This invention relates generally to connectors and has particular reference to a snap-in connector for use in high-voltage electrical apparatus.
  • an electrical connection must be made to the conductive coating on the inside of the kinescope tube. This is ordinarily accomplished by providing a connector embedded in the glass of the tube so that it makes electrical contact with the inside coating, and has an exterior socket to receive a snap-in connector.
  • the object of this invention is to provide a connector for high-voltage apparatus which is so constructed as to eliminate entirely corona resulting from high voltage applied to the connector.
  • a further object of the invention is to provide a connector for high-voltage apparatus which has no portion subject to deterioration by reason of corona resulting from high voltages applied to the connector.
  • Another object of the invention is to provide a connector for attaching a lead wire to a kinescope tube, in which means is provided surrounding the lead wire and connector for preventing corona which otherwise would be developed by high voltages applied to the connector.
  • Fig. 1 is an exploded perspective view of a connector embodying the features of the invention
  • Fig. 2 is a view in section of the connector of Fig. 1 assembled into a cooperating fastener in a kinescope tube;
  • Fig. 3 is an end view of the assembly of Fig. 1.
  • a connector assembly 10 which is adapted to receive a lead Wire 12 and snap into engagement with a connector socket 14 disposed in the wall of a kinescope tube 16.
  • the tube 16 in the illustrated embodiment, comprises a glass wall 18, having an interior conductive coating 20.
  • the connector socket 14 is embedded in the wall so as to be in electrical contact with the coating and provides an outwardly facing contact portion comprising a plate 22 having an opening 24.
  • the connector assembly 10 comprises a base 26 having a series of shouldered spring arms 28 extending therefrom, and a corona shield 30 assembled onto the base by means of a hollow eyelet 32, which is adapted to receive the lead wire 12, which may be retained therein by solden'ng or the like.
  • the corona shield 30 comprises a hollow cup-shaped body preferably formed of sheet metal, having a base portion 34 seated on the connector base 26 and an upstanding peripheral wall 36 disposed about the base.
  • the Wall 36 is preferably outwardly rounded, and the upper edge of the wall is curled inwardly and downwardly to terminate in an edge 38 disposed within the wall 36.
  • the wall 36 is preferably outwardly rounded, and the upper edge of the wall is curled inwardly and downwardly to terminate in an edge 38 disposed within the wall 36.
  • the dimensions of the shield 30 are such that the wall 36 peripherally encloses the junction of the lead wire 12 with the eyelet 32 in radial spaced relation thereto, and the edge 38 also is disposed about the wire in radial spaced relation an appreciable distance longitudinally of the wire from the junction with the eyelet.
  • the base portion 34 of the shield is provided with a medial recessed portion 40 to receive the base 26 of the connector, to securely align the shield on the connector and to at least partially embed the connector.
  • the connector assembly 10 is readily assembled into the socket 14 in the tube by snapping the shouldered legs 28 into the opening 24 where it is securely retained by the spring action of the legs.
  • corona occurs only at sharp edges or corners.
  • the sharp edge is disposed within the smooth exterior portions. Since all portions of the shield are at the same potential, no corona can be produced at the edge disposed inside the shield. Since the design of the shield enables it to be formed of metal, the corona causes no deterioration of the shield.
  • a connector comprising a base having a series of shouldered spring fingers extending from one side thereof for snapping engagement into a cooperating connector, means medially disposed on the base for receiving a lead wire, and a metallic corona shield disposed on the base, said shield having a lower portion superimposed on the base with a small opening to receive the lead wire, a peripheral wall disposed on said lower portion and extending from the base in a direction generally opposite to that of the spring fingers and surrounding the means for receiving the lead wire in radial spaced relation there to, the upper end of said wall being curled inwardly and downwardly to terminate in an edge disposed within the upwardly extending portion of the wall.
  • a connector comprising a connector portion having a base, a medial opening in the base and a series of shouldered spring arms extending from one side of the base for snapping engagement into a cooperating connector socket, a metallic corona shield assembled onto the other side of the base, said corona shield having a lower portion seated against the base, said lower portion having a medial opening, a hollow eyelet extending through the opening in the lower portion of the corona shield and the base retaining said shield in assembly on the base, said eyelet being adapted to receive the end of a lead wire therein, said corona shield having a peripheral wall disposed on the lower portion and extending therefrom in a direction generally opposite to that of the spring arms forming a hollow body for surrounding the lead wire With the eyelet in radial spaced relation, the upper end of said wall being curled inwardly and downwardly to be disposed inside the peripheral wall.
  • a connector comprising a base portion having connector means extending from one side thereof for engagement into aconnector socket, means on the base for receiving a lead wire, and a metallic corona shield associated with the base, said corona shield comprising a cupshaped member having a continuous Wall extending outwardly from the base in a direction generally opposite to that of the connector means and terminating in a continuous edge which is curled inwardly and downwardly into the interior of the cup-shaped member.

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Description

March 5, 1957 w, c, MaGFADDEN 2,784,386
ELECTRICAL ASSEMBLY Filed May 26, 1953 'waIilIIlvl km IN VENTORZ WILF'ORD 6. MM F'ADDEN,
BY m/Zm ATTORNEY.
United States Patent ELECTRICAL ASSEMBLY Wilford C. MacFadden, Fox Chase, Pa., assignor, by
m'esne assignments, to United-Carr Fastener Corporation, Boston, Mass., a corporation of Delaware Application May 26, 1953, Serial No. 357,419 3 Claims. (Cl. 339128) This invention relates generally to connectors and has particular reference to a snap-in connector for use in high-voltage electrical apparatus.
In the construction of television receivers, an electrical connection must be made to the conductive coating on the inside of the kinescope tube. This is ordinarily accomplished by providing a connector embedded in the glass of the tube so that it makes electrical contact with the inside coating, and has an exterior socket to receive a snap-in connector.
Certain types of kinescope tubes now in production require up to 30,000 volts for satisfactory operation, compared to about 8,000 volts maximum in the older tubes. It has been found that connectors satisfactory for use with the lower voltage tubes are not suitable for use with the higher voltage tubes because of the excessive amount of corona produced at the connector by the high voltage.
Although a small amount of corona is produced by the voltages used in the older type of tube, this has been easily controlled by providing a rubber shield over the connector. However, the higher voltages now used produce sufiicient corona to cause rapid deterioration of the rubber shield, even when special types of corona resistant rubber are used.
The object of this invention is to provide a connector for high-voltage apparatus which is so constructed as to eliminate entirely corona resulting from high voltage applied to the connector.
A further object of the invention is to provide a connector for high-voltage apparatus which has no portion subject to deterioration by reason of corona resulting from high voltages applied to the connector.
Another object of the invention is to provide a connector for attaching a lead wire to a kinescope tube, in which means is provided surrounding the lead wire and connector for preventing corona which otherwise would be developed by high voltages applied to the connector.
Other objects of the invention will, in part, be obvious and will, in part, appear hereinafter.
In the drawing:
Fig. 1 is an exploded perspective view of a connector embodying the features of the invention;
Fig. 2 is a view in section of the connector of Fig. 1 assembled into a cooperating fastener in a kinescope tube; and
Fig. 3 is an end view of the assembly of Fig. 1.
Referring to the drawing, there is illustrated a connector assembly 10, which is adapted to receive a lead Wire 12 and snap into engagement with a connector socket 14 disposed in the wall of a kinescope tube 16.
The tube 16, in the illustrated embodiment, comprises a glass wall 18, having an interior conductive coating 20. To provide means for making external contact with the coating 20, the connector socket 14 is embedded in the wall so as to be in electrical contact with the coating and provides an outwardly facing contact portion comprising a plate 22 having an opening 24.
2,784,386 Patented Mar. 5, 1957 The connector assembly 10 comprises a base 26 having a series of shouldered spring arms 28 extending therefrom, and a corona shield 30 assembled onto the base by means of a hollow eyelet 32, which is adapted to receive the lead wire 12, which may be retained therein by solden'ng or the like.
The corona shield 30 comprises a hollow cup-shaped body preferably formed of sheet metal, having a base portion 34 seated on the connector base 26 and an upstanding peripheral wall 36 disposed about the base. The Wall 36 is preferably outwardly rounded, and the upper edge of the wall is curled inwardly and downwardly to terminate in an edge 38 disposed within the wall 36. The wall 36 is preferably outwardly rounded, and the upper edge of the wall is curled inwardly and downwardly to terminate in an edge 38 disposed within the wall 36. The dimensions of the shield 30 are such that the wall 36 peripherally encloses the junction of the lead wire 12 with the eyelet 32 in radial spaced relation thereto, and the edge 38 also is disposed about the wire in radial spaced relation an appreciable distance longitudinally of the wire from the junction with the eyelet. In the preferred embodiment, the base portion 34 of the shield is provided with a medial recessed portion 40 to receive the base 26 of the connector, to securely align the shield on the connector and to at least partially embed the connector.
The connector assembly 10 is readily assembled into the socket 14 in the tube by snapping the shouldered legs 28 into the opening 24 where it is securely retained by the spring action of the legs.
One characteristic of corona is that it occurs only at sharp edges or corners. In the illustrated corona shield, the sharp edge is disposed within the smooth exterior portions. Since all portions of the shield are at the same potential, no corona can be produced at the edge disposed inside the shield. Since the design of the shield enables it to be formed of metal, the corona causes no deterioration of the shield.
The external shape of the shield is not critical, so long as it provides a smooth external surface with no external sharp edges or corners.
Since certain obvious changes may be made in the device without departing from the scope of the invention, it is intended that all matter contained herein be interpreted in an illustrative and not in a limiting sense.
I claim:
1. A connector, comprising a base having a series of shouldered spring fingers extending from one side thereof for snapping engagement into a cooperating connector, means medially disposed on the base for receiving a lead wire, and a metallic corona shield disposed on the base, said shield having a lower portion superimposed on the base with a small opening to receive the lead wire, a peripheral wall disposed on said lower portion and extending from the base in a direction generally opposite to that of the spring fingers and surrounding the means for receiving the lead wire in radial spaced relation there to, the upper end of said wall being curled inwardly and downwardly to terminate in an edge disposed within the upwardly extending portion of the wall.
2. A connector, comprising a connector portion having a base, a medial opening in the base and a series of shouldered spring arms extending from one side of the base for snapping engagement into a cooperating connector socket, a metallic corona shield assembled onto the other side of the base, said corona shield having a lower portion seated against the base, said lower portion having a medial opening, a hollow eyelet extending through the opening in the lower portion of the corona shield and the base retaining said shield in assembly on the base, said eyelet being adapted to receive the end of a lead wire therein, said corona shield having a peripheral wall disposed on the lower portion and extending therefrom in a direction generally opposite to that of the spring arms forming a hollow body for surrounding the lead wire With the eyelet in radial spaced relation, the upper end of said wall being curled inwardly and downwardly to be disposed inside the peripheral wall.
3. A connector comprising a base portion having connector means extending from one side thereof for engagement into aconnector socket, means on the base for receiving a lead wire, and a metallic corona shield associated with the base, said corona shield comprising a cupshaped member having a continuous Wall extending outwardly from the base in a direction generally opposite to that of the connector means and terminating in a continuous edge which is curled inwardly and downwardly into the interior of the cup-shaped member.
References Cited in the file of this patent UNITED STATES PATENTS 1,962,326 Randall June 12, 1934 2,000,673 Terman May 7, 1935 2,323,148 McLaughlin June 29, 1943 2,448,808 Koch Sept. 7, 1948 2,626,978 Coyle Jan. 27, 1953 FOREIGN PATENTS 558,199 Great Britain Dec. 24, 1943
US357419A 1953-05-26 1953-05-26 Electrical assembly Expired - Lifetime US2784386A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US357419A US2784386A (en) 1953-05-26 1953-05-26 Electrical assembly
GB15296/54A GB753395A (en) 1953-05-26 1954-05-24 Improvements in and relating to electrical plug and socket connectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US357419A US2784386A (en) 1953-05-26 1953-05-26 Electrical assembly

Publications (1)

Publication Number Publication Date
US2784386A true US2784386A (en) 1957-03-05

Family

ID=23405510

Family Applications (1)

Application Number Title Priority Date Filing Date
US357419A Expired - Lifetime US2784386A (en) 1953-05-26 1953-05-26 Electrical assembly

Country Status (2)

Country Link
US (1) US2784386A (en)
GB (1) GB753395A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2863131A (en) * 1955-01-03 1958-12-02 Sylvania Electric Prod Tube socket
US3420945A (en) * 1967-03-31 1969-01-07 Nasa Electrode and insulator with shielded dielectric junction
US3621108A (en) * 1970-01-21 1971-11-16 Westinghouse Electric Corp Heat-conducting fins for bus bars and other electrical conductors
US3760337A (en) * 1972-05-24 1973-09-18 Amp Inc Connector for display tube anode button
US4155614A (en) * 1978-04-17 1979-05-22 Blasius Industries, Inc. Connector assembly for anode button of a cathode ray tube
US4509808A (en) * 1983-03-18 1985-04-09 The United States Of America As Represented By The Secretary Of The Navy High voltage, gas tight connector
DE3837556A1 (en) * 1987-11-07 1989-05-24 Mitsubishi Electric Corp PICTURE TUBE
US5335161A (en) * 1992-03-30 1994-08-02 Lorad Corporation High voltage multipliers and filament transformers for portable X-ray inspection units
US5492491A (en) * 1994-04-28 1996-02-20 Thomas & Betts Corporation CRT anode cap terminal
CN104143705A (en) * 2013-09-26 2014-11-12 国家电网公司 Tubular bus-bar corona ball and tubular bus-bar end sealing structure with the same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1962326A (en) * 1928-03-03 1934-06-12 Westinghouse Electric & Mfg Co Connecter
US2000673A (en) * 1929-12-12 1935-05-07 Wired Radio Inc Electron tube
US2323148A (en) * 1942-01-16 1943-06-29 Rca Corp Electrical contact assembly for use in electron discharge devices
GB558199A (en) * 1942-06-23 1943-12-24 United Carr Fastener Corp Improvements in and relating to electrical connectors
US2448808A (en) * 1945-05-02 1948-09-07 Du Mont Allen B Lab Inc Contact terminal for vacuum tubes
US2626978A (en) * 1948-03-27 1953-01-27 United Carr Fastener Corp Sheathed plug connector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1962326A (en) * 1928-03-03 1934-06-12 Westinghouse Electric & Mfg Co Connecter
US2000673A (en) * 1929-12-12 1935-05-07 Wired Radio Inc Electron tube
US2323148A (en) * 1942-01-16 1943-06-29 Rca Corp Electrical contact assembly for use in electron discharge devices
GB558199A (en) * 1942-06-23 1943-12-24 United Carr Fastener Corp Improvements in and relating to electrical connectors
US2448808A (en) * 1945-05-02 1948-09-07 Du Mont Allen B Lab Inc Contact terminal for vacuum tubes
US2626978A (en) * 1948-03-27 1953-01-27 United Carr Fastener Corp Sheathed plug connector

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2863131A (en) * 1955-01-03 1958-12-02 Sylvania Electric Prod Tube socket
US3420945A (en) * 1967-03-31 1969-01-07 Nasa Electrode and insulator with shielded dielectric junction
US3621108A (en) * 1970-01-21 1971-11-16 Westinghouse Electric Corp Heat-conducting fins for bus bars and other electrical conductors
US3760337A (en) * 1972-05-24 1973-09-18 Amp Inc Connector for display tube anode button
US4155614A (en) * 1978-04-17 1979-05-22 Blasius Industries, Inc. Connector assembly for anode button of a cathode ray tube
US4509808A (en) * 1983-03-18 1985-04-09 The United States Of America As Represented By The Secretary Of The Navy High voltage, gas tight connector
DE3837556A1 (en) * 1987-11-07 1989-05-24 Mitsubishi Electric Corp PICTURE TUBE
US5335161A (en) * 1992-03-30 1994-08-02 Lorad Corporation High voltage multipliers and filament transformers for portable X-ray inspection units
US5492491A (en) * 1994-04-28 1996-02-20 Thomas & Betts Corporation CRT anode cap terminal
CN104143705A (en) * 2013-09-26 2014-11-12 国家电网公司 Tubular bus-bar corona ball and tubular bus-bar end sealing structure with the same
CN104143705B (en) * 2013-09-26 2016-09-14 国家电网公司 Pipe bus blocks ball and uses the pipe bus closed-end structure of this end-blocking ball

Also Published As

Publication number Publication date
GB753395A (en) 1956-07-25

Similar Documents

Publication Publication Date Title
US2712120A (en) cochran
US2813257A (en) Socket connector
US2784386A (en) Electrical assembly
US3258732A (en) Anode connector
US10530094B2 (en) Electrical connector
US3050705A (en) Electrical assembly
US2741747A (en) Panel lamp socket of insulation having opening engaging resilient fingers
CN110574238B (en) Press-fit terminal and method for manufacturing same
US4894023A (en) Connector assembly for anode ring of cathode ray tube
US2952831A (en) Contact and pressure-lock terminal
US3502933A (en) Kinescope socket with spark gap
US2549577A (en) Two-piece electrical connector
US3536870A (en) Jack with spring pressed resilient terminal
JPS5834916B2 (en) Anode connector clip assembly
US3079582A (en) Pin and socket connectors
US2719956A (en) Electrical connector
US4204741A (en) Connector assembly for anode ring of cathode ray tube
US6152745A (en) Shielded-electric-wire connection part structure
US3486162A (en) Electrical connector
US2882430A (en) High voltage connector
US2367512A (en) Insulated contact socket
US4566746A (en) Electrical connector
US11387585B2 (en) Anti-fretting/multiple contact terminal using knurl pattern
US3937995A (en) High voltage grounding strap
US4734057A (en) Connector assembly