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US3654591A - Electric terminal and coupling - Google Patents

Electric terminal and coupling Download PDF

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Publication number
US3654591A
US3654591A US52037A US3654591DA US3654591A US 3654591 A US3654591 A US 3654591A US 52037 A US52037 A US 52037A US 3654591D A US3654591D A US 3654591DA US 3654591 A US3654591 A US 3654591A
Authority
US
United States
Prior art keywords
opening
insulator
terminal
housing
insulator means
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
US52037A
Other languages
English (en)
Inventor
M R Jayaram
Nickolas J Sidaris
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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 Honeywell Inc filed Critical Honeywell Inc
Application granted granted Critical
Publication of US3654591A publication Critical patent/US3654591A/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
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12—End pieces terminating in an eye, hook, or fork
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F23Q9/08—Pilot flame igniters with interlock with main fuel supply
    • F23Q9/12—Pilot flame igniters with interlock with main fuel supply to permit the supply to the main burner in dependence upon existence of pilot flame
    • F23Q9/14—Pilot flame igniters with interlock with main fuel supply to permit the supply to the main burner in dependence upon existence of pilot flame using electric means, e.g. by light-sensitive elements
    • 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
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • 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
    • Y10S439/913—Condition determining device, e.g. oxygen sensor, accelerometer, ionizer chamber, thermocouple

Definitions

  • 1t embodies a wafer-shaped insulator with contact portions of lead wires located on opposite sides of the insulator.
  • the terminal fits in an internally threaded socket of a housing for an electromagnet forming part of the control and is held therein by a connector nut for receiving the thermocouple s lead terminals.
  • the invention is directed to an improved arrangement for connecting the leads of a high switch in series with a pilotbumer-heated thermocouple and an electromagnet that controls a safety valve or switch used for controlling the flow of gas to a gas burner.
  • the system is generally well known in the gas appliance art, and numerous arrangements have been commercially used for connecting the pilot-burner-heated thermocouple to an electromagnet controlling a gas valve or the like. These have been generally unsatisfactory to the extent that they were difficult to assemble and, therefore, were more expensive than they needed to be.
  • FIG. 1 of the drawing is a plan view of a wafer-shaped insulator used to retain leads and contact members connected to a safety or high limit switch;
  • FIG. 2 is a side view of the insulator of FIG. 1;
  • FIG. 3 is a cross-sectional view of the insulator, with the lead terminals therein and located in a housing for an electromagnet power unit, taken along line 3-3 of FIG. 1.
  • FIG. 4 is a cross-sectional view of a modification of the invention.
  • FIG. 5 is a plan view of the wafer-shaped insulator of FIG. 4.
  • FIG. 6 is a cross-sectional view of the insulator taken along line 6-6 of FIG. 5.
  • the insulator 1 1 is of round shape and has a radial projection 1 In at one point of its periphery.
  • a recess 12 communicates with a groove 13 that extends to the outer end of the extension 11a, in one surface of the insulator; while on the other side of the insulator, a stepped recess 14a-14b cooperates with recess 12 to form a layer 15 of insulation between the bottoms of the two recesses with a contact supporting or bearing surface on each side.
  • the recess 14a-l4 communicates with a groove 16 in the same surface of the insulator but on the other side of a radial line from the center of the insulator to the center of the projection 11a from the groove 13, with the groove 16 also terminating at the outer end of the projection 11a.
  • An annular rib 17 is formed in the bottom of the recess 14a for a purpose to be described hereinafter.
  • a C-shaped or substantially annular rib 18 Surrounding and slightly spaced from the recess 12, is a C-shaped or substantially annular rib 18 to provide centering and extra protection against transverse movement of a thermocouple lead terminal when positioned therein.
  • a lead 19 from a conventional high limit switch (not shown) is suitably connected at 20 to a tangential extension 21a of a bshaped electrical contact member 21, which is anchored in the insulator by an interference fit in the generally round recess 12.
  • a second lead 22 is similarly connected to a similar contact member 23, which is similarly held in the recess 14a. The lead 19 rests in groove 13 while the lead 22 rests in groove 16.
  • the terminal assembly just described fits in a recess 24 that is formed in a housing 25 for an electromagnet type of power unit 26. It is located between the end wall 27 of the electromagnet power unit and a ring-shaped connector nut 28 screw-threaded into the open end of the housing 25.
  • the housing has a slot 25a extending from its outer end to a point inwardly of the outer surface of the end wall 27, to accommodate the projection 11a of the insulator.
  • the contact member 14a engages the rounded end 30b of a terminal 30a which, in turn, is connected to one end of a coil 30. The other end of the coil 30 is grounded to the end wall 27.
  • the connector nut 28 receives the head of inner lead 31 of a thermocouple (not shown) and the externally threaded terminal nut 32 which bears against a shoulder of outer lead 33 to form an electrical connection between the outer lead 33 and the clamping nut 28.
  • the nut is electrically connected through housing 25, an aluminum or brass washer 34 and wall 27 to coil 30.
  • the other end of the coil 30 connects to the inner lead unit 26 and the housin 25.
  • the assembly just described is adapted to operate in a conventional manner; that is, when a pilot flame is present for heating a thermocouple connected to the leads 31 and 33, current will be supplied through the leads 19 and 22 to the normally closed safety switch and to the coil 30 of the electromagnet.
  • the electromagnet is part of a conventional and commercially available safety device, such as a gas valve or switch of the manually resettable type, there is no need to further define the functioning of the apparatus.
  • each of the bared ends of the lead wires is longer and may or may not be flattened intermediate the ends at 121 and 123, respectively, thereof and is positioned coaxially of the assembly.
  • the wire ends extend into diametrically extending holes 1 l3 and 116 intersecting recesses l 12 and 114a, respectively, in each surface of the insulator 111.
  • Other minor differences lie in a flat terminal head b and a heat staking of the insulator 11 about the bared lead wires, adjacent contact portions 121 and 123 and the adjoining insulation on lead wires 119 and 122.
  • grooves 112 and 114a may be provided to aid in centering and holding the wire portions 121 and 123, respectively.
  • FIGS. 4, S and 6 The functioning of the assembly illustrated in FIGS. 4, S and 6 is the same as that of FIGS. l-3.
  • the washer 134 of FIGS. 4-6 could be made out of insulating material that possibly would provide a better gas seal than the metal washer 34 of FIGS. l-3.
  • the insulator 11 could be of a smaller diameter and located in a sleeve similar to 129 to provide thrust and an electrical connection between wall 27 and nut 28.
  • a control device comprising a housing with a stepped opening therein, an electric power control unit in said opening and having an external shoulder thereon resting on a step of said opening, an external electric terminal on said power unit, insulator means located in said opening and having a first terminal on one side of said insulator means in engagement with said electric terminal and a second terminal on the other side of said insulator means, insulated leads extending from said first and second terminals and from said insulator means, a connector closure secured in the outer end of said opening and at least partially holding said power unit and insulator means in said housing and having a bore therein in alignment with said second terminal for receiving and holding the terminal means of a thermocouple, and a sleeve, having a transverse opening therethrough and through which said leads extend, lying between said insulator means and the side walls of said stepped opening and extending from said closure to said power unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
US52037A 1970-07-02 1970-07-02 Electric terminal and coupling Expired - Lifetime US3654591A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5203770A 1970-07-02 1970-07-02

Publications (1)

Publication Number Publication Date
US3654591A true US3654591A (en) 1972-04-04

Family

ID=21975022

Family Applications (1)

Application Number Title Priority Date Filing Date
US52037A Expired - Lifetime US3654591A (en) 1970-07-02 1970-07-02 Electric terminal and coupling

Country Status (6)

Country Link
US (1) US3654591A (fr)
BE (1) BE767755A (fr)
DE (1) DE2125212A1 (fr)
FR (1) FR2095032A5 (fr)
GB (1) GB1355536A (fr)
NL (1) NL7109053A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940199A (en) * 1975-01-23 1976-02-24 Oscar Frederick Ecklund Rotary contactor for thermocouples
US20100117014A1 (en) * 2008-11-11 2010-05-13 Orkli, S. Coop Electrical connection device for a gas control valve
US20100159302A1 (en) * 2008-12-19 2010-06-24 Ikerlan, S. Coop. Solid-oxide fuel cell with ferritic support

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2643365A (en) * 1949-12-28 1953-06-23 Kellogg Switchboard & Supply Terminal pin block
US3286216A (en) * 1963-06-11 1966-11-15 Robertshaw Controls Co Electric terminal
US3426316A (en) * 1966-02-15 1969-02-04 Honeywell Inc Electric lead terminal
US3467893A (en) * 1966-10-18 1969-09-16 Robertshaw Controls Co Magnet assemblies and terminals

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2643365A (en) * 1949-12-28 1953-06-23 Kellogg Switchboard & Supply Terminal pin block
US3286216A (en) * 1963-06-11 1966-11-15 Robertshaw Controls Co Electric terminal
US3426316A (en) * 1966-02-15 1969-02-04 Honeywell Inc Electric lead terminal
US3467893A (en) * 1966-10-18 1969-09-16 Robertshaw Controls Co Magnet assemblies and terminals

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940199A (en) * 1975-01-23 1976-02-24 Oscar Frederick Ecklund Rotary contactor for thermocouples
US20100117014A1 (en) * 2008-11-11 2010-05-13 Orkli, S. Coop Electrical connection device for a gas control valve
US8347907B2 (en) 2008-11-11 2013-01-08 Orkli, S. Coop Electrical connection device for a gas control valve
US20100159302A1 (en) * 2008-12-19 2010-06-24 Ikerlan, S. Coop. Solid-oxide fuel cell with ferritic support

Also Published As

Publication number Publication date
DE2125212A1 (de) 1972-01-05
NL7109053A (fr) 1972-01-04
GB1355536A (en) 1974-06-05
FR2095032A5 (fr) 1972-02-04
BE767755A (fr) 1971-10-18

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