US1652491A - Electromagnetic relay - Google Patents

Electromagnetic relay Download PDF

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Publication number
US1652491A
US1652491A US98652A US9865226A US1652491A US 1652491 A US1652491 A US 1652491A US 98652 A US98652 A US 98652A US 9865226 A US9865226 A US 9865226A US 1652491 A US1652491 A US 1652491A
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US
United States
Prior art keywords
core
armature
relay
flat
pole piece
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
US98652A
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English (en)
Inventor
Daniel D Miller
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.)
AT&T Corp
Original Assignee
Bell Telephone 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 NL23265D priority Critical patent/NL23265C/xx
Priority to BE340111D priority patent/BE340111A/xx
Application filed by Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Priority to US98652A priority patent/US1652491A/en
Priority to CH126063D priority patent/CH126063A/de
Priority to FR630042D priority patent/FR630042A/fr
Application granted granted Critical
Publication of US1652491A publication Critical patent/US1652491A/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

Definitions

  • This invention relatcs'to electromagnetic relays, and more particularly to improvements in the construction ot so 'called tlat type relays.
  • the construction lot flat-type ⁇ relays is in general along the lines of the relay disclosed in Patent No. 1,121,897, issued December 22, 1914 to E. B. Craft.
  • the Graft relay is provided with a core -ot a flat substantially T-shaped piece of magnetic material, on the long shank of which the magnetizing coil is wound.
  • the shorter Shanks of this core serve assupports Jfor a U-shaped armature ot -magneticV material, the backwardly extending arms of which are secured to these Shanks by means of a highly flexible spring, while the yokeportion of this U-shaped ar ⁇ mature is adapted to extend over the free end of; the long shank of the core.
  • the armature and the shorter shanks yot' the core serve as return paths for the magnetic flux through the core portion.
  • Another feature is the provision of a 5 construction in accordance with this invention of dat type relays whereby the portion of the air gap between the core and arma ture, at the points nearest to the portions of the core and armature that it is intended should cooperate magnetically, and that are with the core that the magnetic.
  • ⁇ reluctance ismaterially reduced and yet the of necessity ineiiective during the operation of the relay due to relative position of the core to the armature in flat type relays, is ⁇ so constructed that the amount of leakage across this ⁇ air gap is reduced.
  • Fig. l illustrates in perspective a complete flat type relay embodying this invention?
  • Fig. 2 illustrates in perspective the shape, relative size and relation of the armature and core of the relay shown in Fig. l and constructed in accordance with this invention
  • Fig. 3 is a front view ot the relay shown in Figs. l and 2 illustrating the relative shape and sizeof the magnetically operating position of the core and armature
  • Fig. fi is a front view of a similar relay showing how the magnetically cooperating portions of the core and'armature may be modified in regard to their shape.
  • a substantially Tehaped punching of magnetic material comprising a cross piece 2, a shank 8, ot a circular axial or other suitable cross section, and flat enlarged ends or pole pieces l and 5.
  • the armature l0 is a rectangularly shaped flat punching ot magnetic material having an enlarged pole piece l2 cooperating with the pole piece 5 and at its opposite end, a correspondingly enlarged cross piece- 14 cooperating with pole piece 4.
  • the cross piece 2 serves as a mounting plate Vtor the various piles of contact springs 28 and 29 to becontrolled by the armature 10 and for mounting the relay itself to suitable supports.
  • the armature 10 is also secured to the cross piece 2 by means of a resilient sheet steel plate 18 riveted to cross piece 2 and having projections 19 and 20 riveted to the armature and acting as a hinge between the armature and the core.
  • the spool heads 23 and 24 are mounted on the enlarged portions 5 andA 4, respectively, and the winding 26 is carried on the core portion 3 between these two spool heads.
  • the two piles of contact springs 28 and 29 are mounted ⁇ as shown on opposite sides ot the coil 26 and are ar ranged to be controlled and operated by the movements of the armature through the medium ot insulating studs, such as 30.
  • the adjustment of the air gap between the pole piece 19. ot the armature and the pole piece 5 is regulated by means of a screw 32 secured to the pole piece 5 and the nut 33 thereon which bears against the pole piece 1Q.
  • the armature forms a continuous path for the magnetic lines of 'torce from one air gap to t-he other; that the portions 19 and 5 and 14C and 4t are of comparatively elongated surface areas at the points where they cooperate magnetically rand that these parts at these points are correspondingly reduced in a transverse direction to maintain the surface areas approximately the same as in the present flat type relays.
  • the width of the air gap between these parts is less than in standard rela-ys ot this type, it is spread out or lengthened in a longitudinal direction to maintain the same surface area.
  • This construction also enables the armature and core to be so shaped that a considerable reduction in the so called inellicient or ineffective air gaps is produced.
  • the portion of the armature on either side of the portion 12 may bc so shaped that they slant sharply away from the pole piece 5 and yet permit the shanks 35 and 36 to be bent to occupy the same plane as the core as clearly indicated in Fig. 3.
  • FIG. 4 shows another application of this principle to further reduce the number of the ineffective lines of torce passing between the core and armature. That is, the pole piece 5 is cut away at a steep angle at 39 so that the area Lt'or the passage of magnetic lines ot torce between the pole piece 5 and port-ion 12 will be sharply dc- ⁇ fined.
  • An electromagnet comprising a core, a winding therefor, and a flat rectangularly shaped armature cooperatively associated with said core, the long sides of the armature being located in substantially the same plane as the core and each of the short sides ot the armature being so bent as to straddle the corresponding end of the core to form an effective air-gap and so bent that the ineii'ective air-gap incident to this construction is lengthened to a maximum.
  • An electromagnet comprising a core having flat ends and a middle portion, an energizing winding tor said core on the middle portion thereof7 a flat rectangularly shaped armature cooperatively associated with said core having its long sides located in substantially the saine plane as the middle portion of the core and having its short sides straddling respectively the flat ends of the core.
  • An electromagnet comprising a core having tlat ends and an intermediate pore tion, an energizing winding for said core on the intermediate portion thereof, a Hat rectangularly shaped armature cooperatively' associated with said core so that one short side of the armature operates magnetically with one flat ⁇ end of the core, the Yarmature being otherwise so shaped that the long sides thereof' are located in substantially the same plan-e as the flat ends of the core, the surface area of the magnetically cooperating parts being of a rectangulaishape and so defined or arranged in relation to the other portions of the armature and core that the majority of the magnetic lines ot force will be directed to pass between these two rectangular surfaces and confined sharply to the area thereof.
  • a flat type relay wherein the armature provides two parallel paths in the magnet-ic circuit and wherein the armature face cor responding to the core face is formed of a cross member bent about the core pole piece characterized by the provision of a similar cross member for the armature at the rear thereot ⁇ whereby the magnetic circuit is comis bent aboutJ said core pole piece being 10 pleted through an air gap between the side nearer to the ends of said cross member than face of said rear cross member and the rear the center thereof, whereby the reluctance of f face of said core piece, and a forward eX- the air-gap between the sides of said core 5 tension of the armature face corresponding pole piece and said armature is increased.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
US98652A 1926-03-31 1926-03-31 Electromagnetic relay Expired - Lifetime US1652491A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL23265D NL23265C (pt) 1926-03-31
BE340111D BE340111A (pt) 1926-03-31
US98652A US1652491A (en) 1926-03-31 1926-03-31 Electromagnetic relay
CH126063D CH126063A (de) 1926-03-31 1927-02-19 Elektromagnetisches Relais.
FR630042D FR630042A (fr) 1926-03-31 1927-03-01 Perfectionnements aux relais électro-magnétiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US98652A US1652491A (en) 1926-03-31 1926-03-31 Electromagnetic relay

Publications (1)

Publication Number Publication Date
US1652491A true US1652491A (en) 1927-12-13

Family

ID=22270315

Family Applications (1)

Application Number Title Priority Date Filing Date
US98652A Expired - Lifetime US1652491A (en) 1926-03-31 1926-03-31 Electromagnetic relay

Country Status (5)

Country Link
US (1) US1652491A (pt)
BE (1) BE340111A (pt)
CH (1) CH126063A (pt)
FR (1) FR630042A (pt)
NL (1) NL23265C (pt)

Also Published As

Publication number Publication date
CH126063A (de) 1928-06-01
BE340111A (pt)
FR630042A (fr) 1927-11-22
NL23265C (pt)

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