US2278230A - Electromagnetic relay - Google Patents

Electromagnetic relay Download PDF

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Publication number
US2278230A
US2278230A US269691A US26969139A US2278230A US 2278230 A US2278230 A US 2278230A US 269691 A US269691 A US 269691A US 26969139 A US26969139 A US 26969139A US 2278230 A US2278230 A US 2278230A
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US
United States
Prior art keywords
armature
support
field element
body portion
knee
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
US269691A
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English (en)
Inventor
Fredric E Wood
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.)
Associated Electric Laboratories Inc
Original Assignee
Associated Electric Laboratories 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 BE438773D priority Critical patent/BE438773A/xx
Application filed by Associated Electric Laboratories Inc filed Critical Associated Electric Laboratories Inc
Priority to US269691A priority patent/US2278230A/en
Application granted granted Critical
Publication of US2278230A publication Critical patent/US2278230A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/26—Parts movable about a knife edge

Definitions

  • FIG-8r 10 [NSl/L/lT/ON INVENTOR. FREDRIC E. W000 ATTORNEY 5 1:. relays.
  • an electromagnetic switching relay compr'sing -a longitudinally; extending-field element, a substantially -:L-'shaped armature including a body portion and anf'operating portion disposed in I angular relationship, and means including "asupport: carried by'the field element adjacent. the endth'ereot and PFC? vvided with azlaterally-iextending knife-edge ongaging the knee of the armature-for piyotally --mounting the armature- 011413116v field Jelement. 56450, the relay comprises:v a i set of contacts; the armature being soconstructedand arranged that thebody portion thereof-is operstively: associated Y with-thefieldelement and that the.
  • :Means is provided including two outwardly extending members disposed on'"op--.v posite ,sides ofithe neld elementuadiacentthe support for-restraining the-armature against lateral -disp1acement;
  • -.and-rneans is. provided including an element carried by: the members and engaging the knee oi! the armature.forretain-.
  • the knee otthearmatuiein place-..on the -knife-edge provided on the support.
  • the elementcarried by-the members com- -prises .a leaf,v spring extendingbetweenthe mem- 'bers and engaging theknee of r the. armature at apoint disposedin alignment-with thevv knifeedge provided on the support,-thereby toretain the knee in place on the knife-edge provided on the support.
  • the invention both as to-its organization and method ofoperation, to-
  • FIG. 215 a side elevation-al view of the relay shown in Fig. 1;
  • Fig. 3 a longitudinal sectional view of the relay taken alongthe 'line HinFig. '1;
  • Fig. us a frag mentaryside elevationalviewof" the endoi' the field element of the relay, illustratin'g an initial step in'the method of forming the'knife-edge thereon;
  • Fig. 5 is a fragmentary sideelevational view of the end of the field element of the relay,
  • Fig. 6 is a fragmentary sectional'view of the relay taken along the line H in Fig. 2,-illustrating the arrangement for positioning the base portion-ot the fieldel'ement with respect to the support therefor;
  • Fig. 7 is a fragmentary perspective view of a portion of the relay shown in Fig.1;
  • Fig. 8 is a fragmentary side elevational view of the relay shown in Fig. 1, illustrating the'manner in-which the'armature thereof may be placed andfrexnoved while the relay otherwise completely assembled.
  • the electromagnetic switching relay there shown comprises a non-magnetic support l0 and a field structure including a longitudinally extending core element.
  • Il -provided with a winding I2 alongiposed on opposite sides of the fleldelement adi iacent the support .areflexibleand comprise arms carried by a member-formed of nonmagnetic material, A portionot the last mentioned memberlis between the field element, and, elementiil between the body portion-"and the 'tudinally extending field element II and a movable.
  • armature ll operativelyassoclated with the core"'element II. and the field element ll.
  • the -core'lement ll includes a body portion- II and a base portion l6 of reduced cross-sectional area,
  • the field element It has a substantially L-shape and includes a body portion l8 and a base portion is disposed in angular relationship.
  • the base portion I! of the field element it has an opening provided therein; and the base portion it of the core element H is positioned in the opening provided in the base portion I! of the field element I3 and projects therethrough, the shoulder I! provided on the core element ll being disposed in engagement with the wall of the base portion ll of the field element II adjacent the opening provided therein.
  • the support It has an opening provided therein in which the base portion ll of the core element II is arranged.
  • the opening provided in the support III is provided with a tapered seat II: and the outer end of the base portion ll of the core element II is externally threaded as indicated at ii.
  • a member 22 provided with a tapered seat 23 is arranged in the opening provided in the support II and in threaded engagement with the outer end of the base portion it of the core element II.
  • the arrangement of the member 22 in threaded engagement with the outer end of the base portion ll of the core element II and the cooperating tapered seats ii and 28 respectively provided in the opening provided in the support II and on the member 22 insure that the core element I I and the field element II are securely retained in assembled relationship upon the support II.
  • an arrangement is provided for positioning the field element It with respect to the-support I0, which comprises a stud 24 carried by the support Ill and an interflttin'; recess 25 formed in the base portion ll of the field element It.
  • the stud 24 carried by the sup- 1 port II is arranged in alignment with respect to the opening provided therein through which the base portion ll of the core element ll projects, thereby to provide an arrangement for positively insuring proper alignment of the core element II and the field element It or the relay with respect to the support It.
  • the support ll may carry a number of laterally spaced-apart studs and have a number of openings formed therein reapectiveLv associated with the studs carried thereby, in order to provide a convenient arrangement for mounting a corresponding number of relays upon the support Ill.
  • the armature ll comprises a one-piece substantially L-shaped structure including a body pc'tion 26 and an operating portion 21 disposed in angular relationship, a knee 2
  • the armature I4 is pivotally mounted on the field element II by an arranger ut including an upwardly and outwardly extending support It carried by the body portion ll of the field element II adjacent the end thereof. More particularly, the support :2 is provided with a laterally extending knife-edge I engaging the knee 28 of the armature ll.
  • the support II is first formed as the end of the body portion ll of the field element 13 by a bending operation, as shown in Fig. 4.
  • the knife-edge I0 is then provided on the support 29 by a milling or grinding machine operation, as shown in Fig. 5.
  • the knee 2! of the armature I4 is retained in bearing engagement with the laterally extending knife-edge 30 provided on the support 29 by an arrangement including a member 3! having two upwardly and outwardly extending arms I! and 33 disposed on opposite sides of the body portion ll of the field element It adjacent the support 29 and a body portion 34 extending between the arms 32 and 33.
  • the member if is formed of resilient metallic stock and comprises a nonmagnetic material, such as brass, the body portion 34 of the member 3
  • the member 3! having two upwardly and outwardly extending arms I! and 33 disposed on opposite sides of the body portion ll of the field element It adjacent the support 29 and a body portion 34 extending between the arms 32 and 33.
  • the member if is formed of resilient metallic stock and comprises a nonmagnetic material, such as brass, the body portion 34 of the member 3
  • the body portion 34 of the member Ii is secured to the adjacent outer surface of the body portion ll of the field element II by two laterally spaced-apart driving screws 35 and It of the Parker-Kalon type extending through aligned openings provided in the body portion 34 of the member 3
  • the outer ends of the arms I! and 33 of the member ii are provided with aligned openings therein which receive the opposite ends of a concave leaf. spring 31 extending therebetween.
  • the arms 32 and II of the member II are so constructed and arranged that they engage the opposite sides of the knee 28 of the armature N, thereby to restrain the knee of the armature against lateral displacement with respect to the knife-edge 30 provided on the support 29.
  • the leaf spring I! is so constructed and arranged that the intermediate portion thereof engages the knee 28 of the armature H at a point dis posed in alignment with the knife-edge ll provided on the support 22, thereby securely to retain the knee of the armature in place on the knife-edge provided on the support.
  • the arrangement of the body portion 34 of the member ll between the outer end of the operating portion, of the armature l4 and the outer surface of the body portion I8 of the field eiement it prevents the outer end of the operating portion of the armature and the adjacent outer surface of the body portion of the field element from sticking together due to the residual magnetic forces therebetween.
  • the leaf spring I! and the resilient arms I! and 33 of the member II are so constructed and arranged that placement and removal of the armature II are facilitated while the relay is otherwise completely assembled.
  • the leaf spring I! and the resilient arms I! and 33 of the member II are so constructed and arranged that placement and removal of the armature II are facilitated while the relay is otherwise completely assembled.
  • the resiliency of the leaf spring 31 and the .arms 82 and 33 of the member ll accommodating outward movement of the armature.
  • the knee 28 of the armsture H may be readily placed upon the knifeedge 30 provided on the support 29 by inserting the operating portion 21 of the armature between the leaf spring 31 and the knife-edge ll provided on the support 28 and then forcing the armature inwardly into position.
  • the outer end of the body portion I! of the core element ll carries an annular pole piece II which cooperates directly with the body portion 26 of the armature
  • two, longitudinally spaced-apart winding retainingheads 39 and 40 are carried by the body portion I of-the core element ll, thereby I I a positively to position the winding i2 carried by the body portion of the core element.
  • is carried portion 21 of the armature l4.
  • comprises two cooperating individual switch springs 42 and 43 arranged in superimposed relationship.
  • Each of the switch springs comprises a base end and a free end and is provided with a cantilever mounting at its base end.”
  • the switch springs are insulated from each 3 are provided which extend through aligned openings provided in the clamping plate 44, the insulating strips 45 and the switch springs 42 and 43 and are threaded intotapped holes provided in the body portion ll of the field element l3.
  • each of the switch springs 42 and 43 provide each of the switch springs with two elongated laterally spaced-apart and independently flexible portions, the twofiexible portions of the switch spring 43 being arranged in superimposed relationship with respect to the two flexible portions of the switch spring 42.
  • the two fiexibl portions of each of the switch springs carry two metallic contacts which are arranged in cooperating relationship with two metallic contacts carried by the two flexible portions of the associated switch spring. More particularly, each 'pair of cooperating metallic contacts isarranged in crossing relationship, thereby to insure proper contact between the cooperating pairs of metallic contacts in spite of slight'mechanical variations in the positions of the switch springs 42 and 43.
  • an operating member 41 is secured to the switch spring 42 adjacent the free end thereof by a driving screw- 43.
  • the driving screw 43 is of the Parker-Kalon type; while the operating member 41 is formed of an inactive organic material, such, for example, as a suitable cellulose acetate.
  • the operating end of the operating member 41 carried by the switch spring " is arranged in direct engaging relationship with the operating portion 21 of the armature I4, whereby the armature I4 is biased in a clockwise direction about the laterally extending knife-edge 30 provided on the support 23, as viewed in Figs. 2 and 3, into and scope of the invention.
  • An electromagnetic relay comprising a longitudinally extending field element, a substantially L-shaped armature including a. body por-.
  • An electromagnetic relay comprising a longitudinally extending field element, a substantially L-shaped armature including a body portion and an operating portion disposed in angular relationship, means including a support carried by said field element adjacent the end thereof and provided with a laterally extending knifeedge engaging the knee of said armature forpivotally mounting said armature on said field element, whereby the body portion thereof is op- ,eratively associated with said field element,
  • means including two outwardly and longitudinally extending members disposed on opposite.
  • An electromagnetic relay comprising a longitudinally extending field element, a substantially L-shaped armature including a body portion and an operating portion disposed in anguin: relationship, means including a support carried by said field element adjacent the end thereof and provided with a laterally extending knifeedge engaging the knee of said armature for pivotally mounting said armature on said field element, said armature being so constructed and arranged that the body portion thereof is operatively associated with said field element and that the operating portion thereof extends along said field element, a member formed of nonmagnetic material and carried by said field element adjacent the end thereof, said member being provided with two outwardly extending resilient arms disposed on opposite sides of said field element adjacent said support and engaging the opposite sides of the knee of said armature, thereby to restrain said armature against lateral displacement, the ends of said arms being apertured and extending beyond said armature, means including a leaf spring extending between the arms of said member and engaging the knee of said armature for retaining the knee of said armature in place on the knife-

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
US269691A 1939-04-24 1939-04-24 Electromagnetic relay Expired - Lifetime US2278230A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE438773D BE438773A (en)van) 1939-04-24
US269691A US2278230A (en) 1939-04-24 1939-04-24 Electromagnetic relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US269691A US2278230A (en) 1939-04-24 1939-04-24 Electromagnetic relay

Publications (1)

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US2278230A true US2278230A (en) 1942-03-31

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423116A (en) * 1944-06-30 1947-07-01 Magnetic Devices Inc Electric relay
US2440888A (en) * 1945-02-20 1948-05-04 Gen Controls Co Electromagnetic device with armature
US2532624A (en) * 1946-07-08 1950-12-05 Allied Control Co Electric relay
US2538814A (en) * 1946-12-20 1951-01-23 Kellogg Switchboard & Supply Electromagnetic relay armature retaining clip
US2693554A (en) * 1950-06-22 1954-11-02 Vigren Sten Daniel Electrical control magnet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2423116A (en) * 1944-06-30 1947-07-01 Magnetic Devices Inc Electric relay
US2440888A (en) * 1945-02-20 1948-05-04 Gen Controls Co Electromagnetic device with armature
US2532624A (en) * 1946-07-08 1950-12-05 Allied Control Co Electric relay
US2538814A (en) * 1946-12-20 1951-01-23 Kellogg Switchboard & Supply Electromagnetic relay armature retaining clip
US2693554A (en) * 1950-06-22 1954-11-02 Vigren Sten Daniel Electrical control magnet

Also Published As

Publication number Publication date
BE438773A (en)van)

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