US3612801A - Contact pin wire termination adaptor assembly for electric switches - Google Patents

Contact pin wire termination adaptor assembly for electric switches Download PDF

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Publication number
US3612801A
US3612801A US49121A US3612801DA US3612801A US 3612801 A US3612801 A US 3612801A US 49121 A US49121 A US 49121A US 3612801D A US3612801D A US 3612801DA US 3612801 A US3612801 A US 3612801A
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United States
Prior art keywords
contact pin
switch
openings
terminations
connector receptacles
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
US49121A
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English (en)
Inventor
James L Elliott
Harold W Hults
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Cutler Hammer Inc
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Cutler Hammer Inc
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Filing date
Publication date
Application filed by Cutler Hammer Inc filed Critical Cutler Hammer Inc
Application granted granted Critical
Publication of US3612801A publication Critical patent/US3612801A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5866—Electric connections to or between contacts; Terminals characterised by the use of a plug and socket connector
    • 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
    • H01R13/02—Contact members
    • H01R13/20—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together

Definitions

  • a toggle switch and assembly for effecting connection of wire leads with contact pin terminations to exterior switch terminals is disclosed.
  • a portion of the switch housing 4 Claims 7 Drawing Figs. adjacent the terminals is mounted and sealed in one end of an insulating base with the terminals engagmg separate connec- Cl 4 200/168 G tor receptacles within individual bores with the base.
  • the wire Int-Cl H01h9/04 contact pins are held in locked electrical engagement with [50] Field OI Search G respective switch terminals and connector receptacles within the base, and the wires connected thereto are sealed against [54] CONTACT PIN WIRE TERMINATION ADAPTOR ASSEMBLY FOR ELECTRIC SWITCHES [56] Referenees Cited moisture by a grommet member sealed within the opposite UNITED STATES PATENTS end of the base.
  • the connector receptacles are of a design ac- 3,290,475 12/1966 Bross 200/ 168 G cepting several different sizes and styles of standard contact 3,541,288 11/1970 Maas ZOO/168G pinwireterminations.
  • the contact pins are automatically mechanically locked in electrical engagement with a connector receptacle by axial interfit of the pin to a given point within the receptacle.
  • Such contact pin can be removed by use of a special tool which when inserted into the receptacle circumferentially abuts the pin to move locking tabs away from the path of the pin so the latter can be withdrawn.
  • the primary object of the present invention is to provide an assembly afiording locking electrical engagement between a plurality of separate contact pin wire terminations and exteriorally extending terminal lugs of an electric switch.
  • Another object is to provide an assembly of the foregoing type which permits use of a number of different sizes of contact pin wire terminations.
  • a further object is to provide an assembly of the foregoing type wherein the region of electrical connection of the contact pin and switch terminal lugs is sealed against entrance of moisture or liquid while permitting insertion or withdrawal of contact pins and wire attached thereto by use of available types of insertion and extraction tools.
  • FIG. 1 is an exploded view in front elevation of certain subassemblies that incorporate the invention
  • FIG. 2 is a fragmentary view in front elevation to larger scale of a completed switch and connector assembly constructed in accordance with the invention
  • FIG. 3 is a fragmentary view in end elevation of the switch and connector assembly shown in FIG. 2;
  • FIG. 4 is a view in front elevation showing the detail of the mating of a switch terminal and wire terminal in a common receptacle used in the assembly of FIGS. 1 and 2;
  • FIG. 5 is a view in side elevation of the subassembly shown in FIG. 4;
  • FIG. 6 is a view in cross section of a switch terminal taken along the line 6-6 of FIG. 1;
  • FIG. 7 is a similar cross-sectional view taken along the line 7-7 of FIG. 2.
  • the present invention involves the use of a switch 10 of the toggle lever, operator type, a molded insulating base or body 12, a wire sealing grommet 14, and a molded end cover 16 for the subbase.
  • Switch 10 which is preferably of the type disclosed and claimed in the copending Hults application, Ser. No. 014,446, filed Feb. 26, I970, is provided with downwardly extending terminal lug 18 which may be assumed to connect interiorally of the casing 10a with stationary and movable contacts. As best shown in FIGS. 2, 5, 6 and 7, each lug 18 on its left side has a convexed surface and on its right side with a concaved surface. Each lug 18 is provided with a main shank portion 180 and a shorter portion 18b of reduced thickness adjacent its free end.
  • the body 12 at its upper end is provided with a rectangular top operating recess 12a whose lateral dimensions are slightly larger than the corresponding outside dimensions of the switch casing 10a. It also has a bottom opening recess 12b in which is seated the sealing grommet 14.
  • Three circular cross sections, spaced-apart openings or passages 12c extend between and open through the inner end walls of the recesses 12a and 12b. Adjacent the lower ends the passages are of reduced diameter in the region of annual shoulder portions 12d of base 12. Each such shoulder has a notch I2e extending therethrough for a purpose that will hereinafter be explained.
  • a connector receptacle 20 of the form best shown in FIGS. 3 to 5, is disposed within each of the passages 12c.
  • Eachreceptacle 20 is preferably fonned of a berryllium-copper alloy metal by suitable stamping from a flat strip and then formed by rolling about a mandrel or the like.
  • the portion 20a of such receptacles is of a tapering or generally frustoconical shape, and the portion 20b integral therewith is also tapered but to a much lesser degree than the portion 20a.
  • At the bottom end of the portion 20b is a small tab 200 which seats in the notch 12c in base 12 to thereby hold a receptacle against rotation in a passage 120.
  • the other bottom edge portions seat against the upper face of the shoulder 12d in passages 120.
  • the receptacles 20 are longitudinally split along their portions 20a and 20b and the latter portion has a pair of oppositely positioned ear portions 20d which extend inwardly thereof.
  • the sealing grommet I4 is preferably formed of a molded silicone rubber material and has three passages 14a extending therethrough which are aligned with the passages 12c. As can be best seen in FIG. 2 each of the passage 14a has a plurality.
  • cover I6 which is preferably formed of the same material as the body 12 has three openings 16a which register with the bottom ends of the passages 14a in grommet 14. Cover 16 is secured to the lower end of body 12 by a suitable epoxy-type cement.
  • FIGS. 2 and 3 show a wire termination or contact member 22 secured to an insulated flexible wire conductor 24.
  • Member 22 has a lower, hollow cylindrical portion 22a which is compressively crimped at a plurality of points 22b about its circumference to clamp it in intimate and tight electrical engagement with the inner barred wire of conductor 24.
  • At its upper end portion 220 merges with an annular shoulder portion 22c.
  • Shoulder portion 220 on its upper side joins with a solid cylindrical portion 22d which is beveled at its free end.
  • This contact 22 is held in tight electrical engagement with terminal lug 18 to provide electrical connection between conductor 24 and terminal lug 18.
  • the outer diameter of the insulating cover of conductor 24 is greater than the diameter of the openings 141: in the portions 14d so that the latter slightly deformed, lightly grip the insulating cover at a plurality of points therealong in the grommet I4.
  • FIGS. 4 and 5 show the use of a somewhat different form of contact member 26 in place of contact member 22.
  • the portions 26a, 26b, 26c and 26d correspond to portions 220 to 224 of contact member 22, but the portion 26d is shorter and of larger diameter than the portion 22d of member 22.
  • the portion 26d engages with the portion 18b of terminal lug I8 rather than the portion 18a as in the base of contact member 22.
  • terminal lug 18 together with receptacle 20 permit the use of several different forms of wire terminals or contact members, contact members 22 and 26 being examples of two extreme types that can be accommodated.
  • an electric switch having an enclosing case with an operator extending from one side and a plurality of spaced apart terminal lugs extending outwardly from another side thereof,
  • an insulating body having a recess in one end thereof in which a portion of said switch casing is seated in sealed relation, a recess formed in its opposite end and a plurality of openings corresponding in number and spacing to said switch terminal lugs, extending between said recesses,
  • a grommet member formed of a resilient material secured in place in the last mentioned body recess and having a plurality of openings extending therethrough which are aligned with said body openings to afford renitent sealed engagement with wire conductors extending therethrough and connected to contact pin terminations locked in place in said connector receptacles.
  • said connector receptacles each have a generally frustoconical portion within which a switch terminal lug seats in electrical contact and which is adapted to receive and hold the cylindrical shank of a contact pin termination in electrical engagement with said switch terminal lug, and wherein said connector receptacles each have an integral annular portion with at least one struck out inwardly depending resilient tang that is adapted to engage with a portion of a contact pin termination when in place and lock it against withdrawal.
  • each of the switch terminal lugs is of arcuate shape in transverse cross section with a portion adjacent the free end of thinner cross section than the remainder so as to accommodate use of and electrical engagement with at least two different diameter sizes of contact pin terminations.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Insulating Bodies (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
US49121A 1970-06-23 1970-06-23 Contact pin wire termination adaptor assembly for electric switches Expired - Lifetime US3612801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4912170A 1970-06-23 1970-06-23

Publications (1)

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US3612801A true US3612801A (en) 1971-10-12

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ID=21958153

Family Applications (1)

Application Number Title Priority Date Filing Date
US49121A Expired - Lifetime US3612801A (en) 1970-06-23 1970-06-23 Contact pin wire termination adaptor assembly for electric switches

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US (1) US3612801A (enrdf_load_stackoverflow)
GB (1) GB1302308A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4171470A (en) * 1978-07-24 1979-10-16 Gettig William A Multi-pole switch
US20100230262A1 (en) * 2009-03-10 2010-09-16 Devine Patrick J Panel mount sealed pushbutton switch
US20210159626A1 (en) * 2019-11-21 2021-05-27 Avx Corporation Wire Termination Device for Coupling a Wire to a Feedthrough Device and System Including the Same
US20210391125A1 (en) * 2019-03-06 2021-12-16 Alps Alpine Co., Ltd. Switch device, and opening and closing detection device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1869646A (en) * 1929-09-13 1932-08-02 Appleton Electric Co Switch box
US2747036A (en) * 1954-04-12 1956-05-22 Riverside Mfg & Electrical Sup Fluid-tight electric switches and waterproof separable conductor connecting means therefor
US2814704A (en) * 1955-07-18 1957-11-26 Honeywell Regulator Co Sealed switch
US3290475A (en) * 1964-12-23 1966-12-06 Merrill Machinery Company Microswitch holder-assembly
US3385945A (en) * 1966-12-09 1968-05-28 Pyle National Co Prewired and presealed devices for use in hazardous areas
US3541288A (en) * 1969-01-27 1970-11-17 Mc Gill Mfg Co Splash-proof electrical switch

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1869646A (en) * 1929-09-13 1932-08-02 Appleton Electric Co Switch box
US2747036A (en) * 1954-04-12 1956-05-22 Riverside Mfg & Electrical Sup Fluid-tight electric switches and waterproof separable conductor connecting means therefor
US2814704A (en) * 1955-07-18 1957-11-26 Honeywell Regulator Co Sealed switch
US3290475A (en) * 1964-12-23 1966-12-06 Merrill Machinery Company Microswitch holder-assembly
US3385945A (en) * 1966-12-09 1968-05-28 Pyle National Co Prewired and presealed devices for use in hazardous areas
US3541288A (en) * 1969-01-27 1970-11-17 Mc Gill Mfg Co Splash-proof electrical switch

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4171470A (en) * 1978-07-24 1979-10-16 Gettig William A Multi-pole switch
US20100230262A1 (en) * 2009-03-10 2010-09-16 Devine Patrick J Panel mount sealed pushbutton switch
US20210391125A1 (en) * 2019-03-06 2021-12-16 Alps Alpine Co., Ltd. Switch device, and opening and closing detection device
US11862425B2 (en) * 2019-03-06 2024-01-02 Alps Alpine Co., Ltd. Switch device, and opening and closing detection device
US20210159626A1 (en) * 2019-11-21 2021-05-27 Avx Corporation Wire Termination Device for Coupling a Wire to a Feedthrough Device and System Including the Same
US11688967B2 (en) * 2019-11-21 2023-06-27 KYOCERA AVX Components Corporation Wire termination device for coupling a wire to a feedthrough device and system including the same

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Publication number Publication date
GB1302308A (enrdf_load_stackoverflow) 1973-01-10

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