US2261818A - Electromagnetic relay - Google Patents

Electromagnetic relay Download PDF

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Publication number
US2261818A
US2261818A US279315A US27931539A US2261818A US 2261818 A US2261818 A US 2261818A US 279315 A US279315 A US 279315A US 27931539 A US27931539 A US 27931539A US 2261818 A US2261818 A US 2261818A
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US
United States
Prior art keywords
armature
outer end
leg
core
arm
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
US279315A
Other languages
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 NL65886D priority Critical patent/NL65886C/xx
Application filed by Associated Electric Laboratories Inc filed Critical Associated Electric Laboratories Inc
Priority to US279315A priority patent/US2261818A/en
Application granted granted Critical
Publication of US2261818A publication Critical patent/US2261818A/en
Priority to FR937589D priority patent/FR937589A/fr
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

Definitions

  • the present invention relates to electromagnetic devices and moreparticularly to electromagnetic relays of the switching type.
  • An electromagnetic relay conventionally comprises a field structure including a core provided with a winding, a movable armature carried by the field structure, and a set of switch springs operatively connected to the armature.
  • Another objectof the invention is to provide, in a relay of the type described, an improved arrangement for pivotally mounting the armature on the fleldstructure and for locking the armature in place.
  • an electromagnetic relay comprising a longitudinally extending core, a substantially L-shaped field element including a first laterally and forwardly extending leg secured to one end of the core and a second longitudinally extending leg arranged in spacedapart relation with respect to the core, and an armature.
  • An arrangement including integral lugsprovided on the outer end of the secondleg of the field element and cooperating openings provided in the armature adjacent the inner end thereof is utilized for pivotally mounting the armature on the outer end of the second leg and.
  • a laterally and forwardly extending projection is carried by the second arm of the bracket which engages the ends of the lugs provided'on the outer end of the second leg of the field element, thereby to lock the armature in place on the outer end of the second leg.
  • the second arm of the bracket carries a spring which engages the amiature in order to urge the armature in seated enj gagement withthe outer end of the second leg of the field element.and a stop for limiting the pivotal movement of the armature away from the outer'end of the core.
  • the second arm carried thereby comprises a link formed of a suitable insulating material.
  • the armature is connected to the link by an arrangement including an integral lug provided on the outer end of the armature and a cooperating opening provided in the link, the lug projecting through the cooperating opening and extending inwardly to provide an inwardly directed seat arranged to receive and engage the wall of the link adjacent the cooperating opening.
  • one of the switch springs of the set of switch springs is connected 7 to the. link by an arrangement including an integral lug provided on the outer end'of the switch spring and a cooperating opening provided in the link, the lug projecting through the cooperating opening and carrying outwardly extending spaced-apart fingers to provide an outwardly directed seat arranged to receive and engage the wall of thelink adjacent the cooperating opening.
  • lugs respectively provided on the outer end of the armatureand on the outer end of the switch spring and the respective cooperating openings provided in the link are so constructed and arranged that they are readily engageable and disengageable, thereby to facilitate ready placement and removal of the link.
  • FIG. 1 is a plan view of an electromagnetic relay constructed and arranged in accordance with the present invention
  • Fig. 2 is a longitudinal sectional view of the relay taken along the line 2-2 in Fig. 1
  • Fig. 3 is an end elevational view of the relay shown in Fig. 1
  • F lg. 4 is a fragmentary exploded perspective view of the relay illustrating the mounting arrangement for the armature thereof.
  • the electromagnetic relay there shown comprises a field structur including a longitudinally extending core l0 provided with a winding H and a substantially L- shaped field element i2 including a first laterally and forwardly extending leg l3 secured to .one' end of the core HI by a screw l4, extending through an opening provided in the leg l3 and threaded into a tapped hole provided in the end of the core ID, and a second longitudinally ex tending leg l5 arranged in spaced-apart relationship with respect to the core Ill.
  • the winding H surrounds the core Ill and is retained in place by a pair-of spaced-apart retaining heads l6 and I1 arranged on the opposite ends of the winding II and surrounding the core ID, th retaining heads l6 and I! being formed of a suitable insulating material.
  • the relay comprises a movable armature l8 and a substantially L-shaped bracket IS including a first longitudinally extending arm 20 and a second laterally and rearwardly extending arm 2
  • the inner end of the armature I8 is pivotally mounted on the outer end of the leg l5 intervening strips 34 of a suitable insulating and the arm is secured to the leg
  • the arrangement for pivotally mounting the inner end of the armature IS on the outer end of the leg l5 comprises interfitting lugs respectively carried on the outer end of the leg
  • the intermediate portion of the outer end of the leg I5 is cut out to provide two lugs 23 spaced apart by an intervening notch 24; while the opposite sides of the armature l8 adjacent the inner end thereof are cut out to provide two spaced-apart lugs 25 and associated spaced-apart notches 26.
  • the intermediate portion of the inner end of the armature I8 is cut out to provide a notch 21 disposed intermediate the two spaced-apart lugs 25.
  • the armature I8 and the bracket H are in assembled relationship the two spaced-apart lugs 23 provided on the leg I! extend into and project through the two spacedapart notches 26 provided in the armature l8; andthe intermediate portion of the armature I8 is disposed in the notch 24 provided in the leg l5. Furthermore, the notch 21 provided in the armature l8 receives the leg 20.
  • an arrangement which comprises two spaced-apart laterally and forwardly extending projections 29 carried by the arm 2
  • of the bracket l9 carries a leaf spring 30, a stop 3
  • the leaf spring 30 is arranged directly upon the arm 2
  • is arranged upon the leaf spring 30, and the switch springs of the set of switch springs 32 are separated from each other and from the stop 3
  • the set of switch springs 32 is illustrated as comprising two switch springs 35 and 31, although it will be understood that the set of switch springs 32 may comprise any reasonable number of switch springs.
  • of the bracket H has two sets of spaced-apart openings 2
  • of the bracket l9 are utilized to fasten the arm 2
  • Th switch springs 36 and 31 are respectively provided with terminals 36a and 37a to which electrical connections may be extended, and carry cooperating contacts adjacent the outer ends thereof, which are arranged in switching relationship and preferably formed of a suitable precious metal.
  • the leaf spring 30 is provided with an outwardly projecting and inwardly curved end 30a arranged in direct engagement with the inner end of the armature l8, thereby to urge the inner end of the armature l8 into seated engagement with the outer end of the leg I5 and to prevent longitudinal movement therebetween incident to the pivotal movement of the armature l8 away fromthe cooperating outer end of the core HI.
  • is provided with an outwardly projecting and inwardly directed end 3
  • the armature II has an opening provided therein, into which a rivet, 33 formed of nonmagnetic material is securely fastened, the rivet 33 being arranged to engage the outer end of the core Ill when the armature I3 is moved toward the core Ill,
  • the arrangement of the rivet 33 carried by the armature 8 with respect to the outer end of the core I prevents the armature I8 from sticking to the outer end of the core I0 when the armature I8 is moved toward the outer end of the core incident to the energization of the winding
  • an arrangement is provided which comprises a link 33 formed of a suitable insulating material.
  • the link 39 has a pair of spaced-apart openings 40 formed therein adjacent the inner end thereof and a centrally disposed opening 4
  • Two integral lugs 42 are provided on the outer end of the armature
  • an integral lug 43 is provided on the outer end of the switch spring 36, this lug being arranged to project through the cooperating opening 4
  • provided inthe link 39 are so constructed and arranged that they are readily engageable and disengageable; thereby to iacilitate ready placement and removal of the link 39. More particularly, the link 39 may be readily removed by forcing the switch spring 36 inwardly, thereby to disengage the outwardly directed seat provided in the lug 43 and the associated wall of the link 39 adjacent the cooperating opening 4
  • two spaced-apart slots 45 are provided on the opposite sides of the link 39 adjacent the outer end thereof, these slots being arranged to accommodate the two-cobe completely removed from the v operating lugs provided on the two switch springs of the two sets of switch springs, in the event the relay comprises three sets of switch springs,
  • the two sets of switch springs which may be secured to the arm 2
  • the leg ll of the field element I2 is first secured to the core ID with the screw l4, and the winding II is then placed upon the core l0. Subsequently, the inner end of the armature I8 is positioned on the outer end of the leg l5 of the field element l2, and
  • the bracket I9 is secured in place, thereby to lock the inner end of the armature ll upon the outer end of the leg I5.
  • , the set of switch springs 32, the insulating strips 34 and the clamping plate 33 are assembled upon the arm 2
  • the armature I3 is operatively connected to the switch spring 33 by placing the link 39 in its cooperating position with respect to the lugs 42 and 43 respectively provi ed on the outer ends of the armature l3 and spring 33'.
  • the movement of the armature I9 is controlled Jointly by the energization of the winding l I and 'the resiliency of the switch spring 38; and the armature is prevented from sticking to the outer end of the core l9 due to any residual magnetism in the core I. by the rivet 33 formed of nonmagnetic material.
  • a substantially L-shaped bracket Y including a first longitudinally extending arm removably secured to said second leg and a second laterally and rearwardly extending arm, means including a laterally and forwardly extending projection carried by said second arm and engaging the ends of said lugs for locking the inner end of said armature in place on the outer end of said second leg, means including a leaf spring carried by said second arm and pro- Jecting forwardly into engagement with said armature for urging the inner end of said armature in seated engagement with'the outer end of said second leg, and means including a stop carried by said second arm and projectlng'forwardly over said armature for limiting the pivotal movement of said armature away from the outer end of said core.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
US279315A 1939-06-15 1939-06-15 Electromagnetic relay Expired - Lifetime US2261818A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL65886D NL65886C (en(2012)) 1939-06-15
US279315A US2261818A (en) 1939-06-15 1939-06-15 Electromagnetic relay
FR937589D FR937589A (fr) 1939-06-15 1946-12-05 Relais électro-magnétique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US279315A US2261818A (en) 1939-06-15 1939-06-15 Electromagnetic relay

Publications (1)

Publication Number Publication Date
US2261818A true US2261818A (en) 1941-11-04

Family

ID=23068447

Family Applications (1)

Application Number Title Priority Date Filing Date
US279315A Expired - Lifetime US2261818A (en) 1939-06-15 1939-06-15 Electromagnetic relay

Country Status (3)

Country Link
US (1) US2261818A (en(2012))
FR (1) FR937589A (en(2012))
NL (1) NL65886C (en(2012))

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421642A (en) * 1944-06-15 1947-06-03 Guardian Electric Mfg Co Electromagnet relay construction
US2421641A (en) * 1943-05-20 1947-06-03 Guardian Electric Mfg Co Relay
US2591773A (en) * 1948-04-22 1952-04-08 Telemecanique Electr Soc Electromagnetic actuator for contactors and circuit breakers
US2932705A (en) * 1958-09-09 1960-04-12 Lion Mfg Corp Convertible locking relay
US5028764A (en) * 1990-05-22 1991-07-02 Roy Kuhlengel Calculating instrument and method therefor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421641A (en) * 1943-05-20 1947-06-03 Guardian Electric Mfg Co Relay
US2421642A (en) * 1944-06-15 1947-06-03 Guardian Electric Mfg Co Electromagnet relay construction
US2591773A (en) * 1948-04-22 1952-04-08 Telemecanique Electr Soc Electromagnetic actuator for contactors and circuit breakers
US2932705A (en) * 1958-09-09 1960-04-12 Lion Mfg Corp Convertible locking relay
US5028764A (en) * 1990-05-22 1991-07-02 Roy Kuhlengel Calculating instrument and method therefor

Also Published As

Publication number Publication date
FR937589A (fr) 1948-08-20
NL65886C (en(2012))

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