US2749396A - Contact structure for relays and the like - Google Patents

Contact structure for relays and the like Download PDF

Info

Publication number
US2749396A
US2749396A US329284A US32928453A US2749396A US 2749396 A US2749396 A US 2749396A US 329284 A US329284 A US 329284A US 32928453 A US32928453 A US 32928453A US 2749396 A US2749396 A US 2749396A
Authority
US
United States
Prior art keywords
contact
terminals
pole
header
contacts
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
US329284A
Other languages
English (en)
Inventor
John H Horman
Edward C Hoell
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.)
Allied Control Co Inc
Original Assignee
Allied Control Co 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
Priority to BE518049D priority Critical patent/BE518049A/xx
Application filed by Allied Control Co Inc filed Critical Allied Control Co Inc
Priority to US329284A priority patent/US2749396A/en
Priority to GB24948/54A priority patent/GB734670A/en
Priority to CH316520D priority patent/CH316520A/de
Application granted granted Critical
Publication of US2749396A publication Critical patent/US2749396A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/32—Latching movable parts mechanically
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil

Definitions

  • This invention relates to electromagnetically operated 1 switch mechanisms, often called relays.
  • Fig. l is a central sectional elevation of a relay embodying the invention, taken on the line 1-1 of Fig. 2;
  • Fig. 2 is a plan view of the inside of the terminal header supporting the contact arms;
  • Fig. 3 is a perspective view of one of the movable contact arms showing the curvature of its end portion
  • Fig. 4 is a section on the line 4-4 of Fig. 3;
  • Fig. 5 is a sectional elevation, similar to but on a smaller scale than Fig. l and at a different angle, taken on the line 5-5 of Fig. 6, showing the ends of the magnetizing coil of the relay secured to terminals;
  • Fig. 6 is a plan view looking at the opposite side of the terminal header from that shown in Fig. 2;
  • Fig. 7 is an exploded view of the various parts of the relay
  • Fig. 8 is an exploded view showing how the armature and its associated parts may be assembled.
  • Fig. 9 is a detail, partly in section, of the means for mounting the contacts.
  • Magnetizing coil 10 is enclosed within identical annular cup-shaped pole-pieces 12 and 14, the outer edges of which engage one another at 16, and the inner edges of which are spaced apart providing a gap 18 located within the magnetizing coil.
  • Insulating washers or disks 20 are inserted in the bottoms of the pole-pieces 12 and 14.
  • Pole-piece bushing 22 of magnetic material is forced into the pole-piece 14, the length of said pole-piece bushing 22 being such that its inner end lies adjacent the gap 13 and its diameter being such as to have a press fit in pole-piece 14.
  • Shell 24, of nonmagnetic material is inserted into the opening in the other pole-piece 12, serving as a bearing for movable armature 26.
  • Armature 26 is arranged to slide within the brass shell 24 in cooperative relation to the pole-piece bushing 22 and the gap 18.
  • armature 26 Within armature 26 and biasing it to its normal position away from the pole-piece bushing (as shown in Fig. l) is a tension spring 28 attached at one end to the armature 26 by several crimped portions 30, and at its other end to head 31 of a screw 32 threaded into a brass end-plate 34 from which the threaded end 33 of the screw 32 initially projects.
  • the end-plate 30 is provided with openings 36 adapted to cooperate with lugs 38 punched from the bottoms of pole-pieces 12 and 14.
  • an armature assembly in which the spring 28 and screw 32 serve to bias the armature 26 toward its normal position as shown in Fig. 1, but permits movement of the armature 26 within the brass shell 24 toward and into engagement with the pole-piece bushing 22 when the magnetizing coil 10 is energized.
  • an actuator 42 of rigid insulating material Slidingly mounted within bushing 22 is an actuator 42 of rigid insulating material. its upper end normally projects beyond bushing 22 in a position to be engaged by armature 26.
  • the movement of the actuator 42 within the pole-piece bushing 22 toward the armature 26 is limited by a flange 44 which engages the end of the polepiece bushing 22 as shown.
  • the amount of possible movement of the actuator is governed by the distance it projects beyond bushing 22.
  • Flange 44 also serves to actuate the contact members of the relay, as hereinafter described, and is formed with a groove as shown to facilitate performance of that function.
  • At its outer end actuator 42 is provided with a cavity which contains a light compression spring 46 which engages the center of disk 48 of the terminal header assembly (hereinafter described) and serves to hold the actuator 42 against bushing 22.
  • bracket 50 Secured to pole-piece 14, preferably by spot welding, is a bracket 50 the form of which is best shown near the bottom of Fig. 7.
  • This bracket 50 is provided at its center with an opening 52 which receives the end of bushing 22, and with openings 54 which cooperate with lugs 33 on the pole-piece 14, thereby facilitating proper positioning of the bracket 50.
  • the arms 56 of the bracket engage at their outer ends with notches 58 in the disk 48 of the header.
  • disk 48 is secured in spaced relation to magnet shell 14, thereby providing a space for a plurality of movable and fixed contact members carried by the disk 48 and arranged as described below.
  • the construction of the terminal header assembly is best shown in Figs. 1, 2 and 6.
  • the disk 48 is provided with a plurality of holes arranged in two circles around the center of said disk, the number of holes in the outer circle being double the number of holes in the inner circle.
  • Contact terminals 60 are secured in the holes in the outer circle, and contact terminals 62 are secured in the holes in the inner circle, by the use of a suitable rigid insulating material such as glass as best shown in Fig. 1 at 64. That is, the contact terminals 60 and 62 are mounted in the disk 48 and are insulated from it and from one another.
  • Mounted in the same way in holes in the disk 48 are the two terminals 66 and 68 to which are secured the leads 70 and 72 of the magnetizing coil 10, as shown in Fig. 5 from which it will be apparent that the wires 76 and 72 pass through notches 73 (Fig. 7) in the edges of the disks 20, through openings 74 and 76 in the polepiece 14, and through notches 77 and 78 in the
  • each of these groups of cooperating contact members includes a U-shaped movable contact member 79 (Fig. 3) which is secured at one end to a terminal 62 in the inner circle of terminals, and extends therefrom radially outwardly of the disk 48 and then back toward the center of said disk.
  • Each of said groups of a contact members also includes two fixed contact members iii and 82 which are supported on adjacent terminals 60 in the outer circle of terminals, and these contact members Sit and 32 are arranged to converge from the terminals on which they are supported toward one another andon opposite'sides of (that is, below and above, as shown in Fig.
  • the arrangement of contacts is very compact.
  • the relay contains six double-throw single pole switching units all operated simultaneously.
  • the terminal-header may be designed to provide a difierent number of switching units.
  • a cup-shaped casing 84 which is provided at its top with an opening to accommodate the end 33 of the screw 32which initially projects from the end plate
  • the casing 84 is slipped over the polepieces 12 and 14, and over the edge of the disk 48 of the terminal header.
  • the edge of the casing 84 ' is crimped over the edge of the disk 48 into'anotch provide'dtherein as shown.
  • Thenotch isthen filled with solder which hermetically sealsone end of the unit.
  • solder is applied at 40 to close the opening at that point in the casing 84.
  • a ring 83 may be secured by welding or otherwise on the outside of the casing 34 and is provided with flanges 9% adapted to receive screws 92 for mounting.
  • each contact is mechanically and electrically connected to its contact terminal by means of solder and a mounting sleeve which has a sliding fit on the terminal.
  • the sleeve is shown in section at 9 l t has a hub portion 95 with a flat upper face and an initially cylindrical extension 96.
  • a perforated contact such as 82 is slipped over this extension which is then riveted over as shown.
  • the length of the sleeve which is differcut for each of the three contacts of a set, determines the contact spacing.
  • a terminal header and contact assembly for an electromagnetically operated switch comprising, a disc, contact terminals secured in and extending through said disc and insulated from one another, said terminals being arranged on spaced concentric circles, the number of terminals in the outer circle being double the number in the inner circle, groups of contact members mounted on said terminals, each of which groups consists of a U-shaped movable contact member secured at one end to a terminal on the inner circle and extending therefrom outwardly toward the edge of the disc and thence back toward the central portion of the disc, and two contact members sup ported onadjacent terminals on the outer circle and converging toward one another and extending on opposite sides of the'movable contact member of the group.
  • a terminal header assembly carrying a plurality of double-throw single-pole switching units; said units each comprising a movable middle contact in the form of a U-shaped spring anchored at one end to said header and having its free end pointing toward a central point, a pair of relatively fixed contacts anchored to said header at one end on either side of the loop in said middle contact and converging toward one another so that theirfree ends lie on opposite sides of said middlecontact; the free ends of the middle contacts of said units extending beyond the free ends of said fixed contacts; whereby the said free ends may all be engaged by a single actuating member moving in a direction' normal to the plane of said header between said fixed contacts.
  • a compact double-throw singl -pole contact assembly fora switch comprising, a support, three fixed terminals carried'thereby and arranged at the apices of a triangle, a U-shaped movable spring contact member secured at one end to one of said terminals with its looped end positioned between the other two terminals, and a pair of relatively fixed contacts secured at their ends to said other two terminals andconvcrging toward one another so that their free ends lie on opposite sides of said movable contact member, the free end of the movable contact member extending'beyond the ends oithe fixed contacts where it may be engaged by an actuator.
  • a terminal header assembly carrying a plurality of switching units; said units each comprising a movable contact in the form of a U-shaped spring anchored at one end to said header and having its free end pointing toward a central point, a rclatively'fixed 'contact anchored to said header at one end 'at one side of the loop in said movable contact and having its other end lying on one side of the movable contact adjacent its free end; the free ends of the movable contacts of said units extending beyond the free ends of the movable contacts, whereby said free ends may all be engaged by a single actuating member moving in a direction normal to said header between said fixed contacts.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Relay Circuits (AREA)
  • Electromagnets (AREA)
US329284A 1952-02-28 1953-01-02 Contact structure for relays and the like Expired - Lifetime US2749396A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE518049D BE518049A (xx) 1952-02-28
US329284A US2749396A (en) 1952-02-28 1953-01-02 Contact structure for relays and the like
GB24948/54A GB734670A (en) 1952-02-28 1953-01-06 Contact assembly for an electromagnetic relay
CH316520D CH316520A (de) 1952-02-28 1953-02-25 Durch Reibungsschluss verriegelbarer, elektrisch betätigter Schalter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27369252A 1952-02-28 1952-02-28
US329284A US2749396A (en) 1952-02-28 1953-01-02 Contact structure for relays and the like

Publications (1)

Publication Number Publication Date
US2749396A true US2749396A (en) 1956-06-05

Family

ID=26956366

Family Applications (1)

Application Number Title Priority Date Filing Date
US329284A Expired - Lifetime US2749396A (en) 1952-02-28 1953-01-02 Contact structure for relays and the like

Country Status (4)

Country Link
US (1) US2749396A (xx)
BE (1) BE518049A (xx)
CH (1) CH316520A (xx)
GB (1) GB734670A (xx)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843708A (en) * 1955-05-31 1958-07-15 Guardian Electric Mfg Co Header for electrical devices and method of making the same
US3131268A (en) * 1962-03-14 1964-04-28 Electronic Specialty Company Electromagnetic coaxial switch
US3145279A (en) * 1961-04-07 1964-08-18 Ward Leonard Electric Co Enclosed multipole relay
US3683144A (en) * 1971-03-04 1972-08-08 Columbus Electric Mfg Co Non-snap-acting switch devices with s-shaped contact spring blade

Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US783652A (en) * 1904-05-24 1905-02-28 Perkins Corp Electric-switch contact.
US929393A (en) * 1909-03-20 1909-07-27 Gen Electric Relay.
US1031312A (en) * 1910-02-18 1912-07-02 United Electric Apparatus Company Circuit-make-and-break device.
US1225433A (en) * 1915-09-14 1917-05-08 George W Gilmore Detachable contact-plate.
US1317203A (en) * 1919-09-30 Contact-terminal
US1322895A (en) * 1919-11-25 gaylord
US1833176A (en) * 1928-05-16 1931-11-24 G & W Electric Speciality Co Switch
US1839034A (en) * 1930-02-10 1931-12-29 Supreme Instr Corp Jack switch
US2085217A (en) * 1934-11-10 1937-06-29 Hart George Hegeman Heater circuit and control
US2156465A (en) * 1936-03-10 1939-05-02 Vigren Sten Daniel Set of contact springs for electrical switching apparatus
GB537940A (en) * 1939-04-29 1941-07-14 British Thomson Houston Co Ltd Improvements in and relating to multi-contact electric switches
US2279395A (en) * 1940-12-24 1942-04-14 Laurance E Gardiner Relay
US2284644A (en) * 1939-01-19 1942-06-02 Dubilier William Electric switch
FR892479A (fr) * 1942-02-10 1944-04-07 Ericsson Telefon Ab L M Ressort de contact à plots jumelés frottants
US2369616A (en) * 1941-07-09 1945-02-13 Bell Telephone Labor Inc Contacting device
US2381835A (en) * 1943-12-18 1945-08-07 Metals & Controls Corp Switch
US2444198A (en) * 1944-04-01 1948-06-29 Cook Electric Co Hermetically sealed electromagnetic relay
US2454702A (en) * 1946-02-23 1948-11-23 Union Switch & Signal Co Circuit controller
US2521559A (en) * 1948-02-17 1950-09-05 Ark Les Switch Corp Clock selector switch
US2626334A (en) * 1950-01-03 1953-01-20 Cutler Hammer Inc Electric switch
US2683198A (en) * 1950-10-30 1954-07-06 Hart Mfg Co Electromagnetic relay

Patent Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1317203A (en) * 1919-09-30 Contact-terminal
US1322895A (en) * 1919-11-25 gaylord
US783652A (en) * 1904-05-24 1905-02-28 Perkins Corp Electric-switch contact.
US929393A (en) * 1909-03-20 1909-07-27 Gen Electric Relay.
US1031312A (en) * 1910-02-18 1912-07-02 United Electric Apparatus Company Circuit-make-and-break device.
US1225433A (en) * 1915-09-14 1917-05-08 George W Gilmore Detachable contact-plate.
US1833176A (en) * 1928-05-16 1931-11-24 G & W Electric Speciality Co Switch
US1839034A (en) * 1930-02-10 1931-12-29 Supreme Instr Corp Jack switch
US2085217A (en) * 1934-11-10 1937-06-29 Hart George Hegeman Heater circuit and control
US2156465A (en) * 1936-03-10 1939-05-02 Vigren Sten Daniel Set of contact springs for electrical switching apparatus
US2284644A (en) * 1939-01-19 1942-06-02 Dubilier William Electric switch
GB537940A (en) * 1939-04-29 1941-07-14 British Thomson Houston Co Ltd Improvements in and relating to multi-contact electric switches
US2279395A (en) * 1940-12-24 1942-04-14 Laurance E Gardiner Relay
US2369616A (en) * 1941-07-09 1945-02-13 Bell Telephone Labor Inc Contacting device
FR892479A (fr) * 1942-02-10 1944-04-07 Ericsson Telefon Ab L M Ressort de contact à plots jumelés frottants
US2381835A (en) * 1943-12-18 1945-08-07 Metals & Controls Corp Switch
US2444198A (en) * 1944-04-01 1948-06-29 Cook Electric Co Hermetically sealed electromagnetic relay
US2454702A (en) * 1946-02-23 1948-11-23 Union Switch & Signal Co Circuit controller
US2521559A (en) * 1948-02-17 1950-09-05 Ark Les Switch Corp Clock selector switch
US2626334A (en) * 1950-01-03 1953-01-20 Cutler Hammer Inc Electric switch
US2683198A (en) * 1950-10-30 1954-07-06 Hart Mfg Co Electromagnetic relay

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843708A (en) * 1955-05-31 1958-07-15 Guardian Electric Mfg Co Header for electrical devices and method of making the same
US3145279A (en) * 1961-04-07 1964-08-18 Ward Leonard Electric Co Enclosed multipole relay
US3131268A (en) * 1962-03-14 1964-04-28 Electronic Specialty Company Electromagnetic coaxial switch
US3683144A (en) * 1971-03-04 1972-08-08 Columbus Electric Mfg Co Non-snap-acting switch devices with s-shaped contact spring blade

Also Published As

Publication number Publication date
CH316520A (de) 1956-10-15
BE518049A (xx)
GB734670A (en) 1955-08-03

Similar Documents

Publication Publication Date Title
US2749403A (en) Electromagnetic relay
US2539547A (en) Relay
US2239312A (en) Electromagnetic apparatus
US2527475A (en) Switch
US2538020A (en) Relay
US3811102A (en) Relay
US2749396A (en) Contact structure for relays and the like
US3033957A (en) Electromagnetic relay
US2279395A (en) Relay
US2632071A (en) Relay
US3042773A (en) Relay
US4792776A (en) Miniaturized electromagnetic relay for switching high voltages
US4254391A (en) Split armature relay
US2186638A (en) Switch contact
US2668207A (en) Electromagnetic relay or switch
US3699486A (en) High voltage miniaturized relay
US3497841A (en) Magnetic latch relay
US2892053A (en) Electromagnetic relay
US3668578A (en) Lightweight electromagnetic relay
US2398681A (en) Relay
US3118033A (en) Electromagnetic relay
US3036176A (en) Electrical relay
US3629749A (en) Electromagnetic switch construction
US2272496A (en) Switching device
US3582596A (en) Diaphragm pushbutton switches