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US3372355A - Solenoid arrangement - Google Patents

Solenoid arrangement Download PDF

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Publication number
US3372355A
US3372355A US564282A US56428266A US3372355A US 3372355 A US3372355 A US 3372355A US 564282 A US564282 A US 564282A US 56428266 A US56428266 A US 56428266A US 3372355 A US3372355 A US 3372355A
Authority
US
United States
Prior art keywords
armature
base
posts
permanent magnet
pole pieces
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
US564282A
Other languages
English (en)
Inventor
Zielasko Horst
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.)
Felten and Guilleaume Carlswerk AG
Original Assignee
Felten and Guilleaume Carlswerk AG
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
Application filed by Felten and Guilleaume Carlswerk AG filed Critical Felten and Guilleaume Carlswerk AG
Application granted granted Critical
Publication of US3372355A publication Critical patent/US3372355A/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
    • H01H51/00—Electromagnetic relays
    • H01H51/01—Relays in which the armature is maintained in one position by a permanent magnet and freed by energisation of a coil producing an opposing magnetic field

Definitions

  • Another object of the present invention is to provide a polarized magnetic arrangement, as set forth, in which no parts are either press-fitted or fastened together so tightly that the magnetic properties of the parts are thereby altered.
  • Yet another object of the present invention is to provide a polarized magnetic arrangement, as set forth, which is applicable to sensitive type of relays by operating on a relatively low amount of current.
  • Still another object of the present invention is to provide a polarized magnetic arrangement, as set frth,with a permanent magnet forming a magnetic shunt and an air gap associated with such permanent magnet for increasing the sensitivity of the arrangement.
  • a further object of the present invention is to provide a polarized magnetic arrangement, as set forth, having an armature which aligns itself automatically with the magnetic poles of the arrangement.
  • a yet further object of the present invention is to provide a polarized magnetic arrangement, as set forth, which is reliable in operation and requires substantially no maintenance.
  • a still further object of the present invention is to provide a polarized magnetic arrangement, as set forth, which may be manufactured simply and economically.
  • the invention includes a supporting frame having a base and a hole through the base, a first and a second post integrally constructed with the base, an electrical coil wound about each post so that the magnetization of the post is changed, when electric current flows through the coil, a rib associated with each of the posts and integral with the frame, a permanent magnetic bridging the ribs and inducing a magnetic field in the posts, the permanent magnet having a hole, an actuator rod passing through the holes in the base and permanent magnet and parallel to the posts, collars associated with the rod and cooperating with the base and the permanent magnet so that the rod is slidably movable within the holes along a predetermined portion of the rod, an armature affixed to one end of the actuator 3,372,355 Patented Mar.
  • FIG. 1 is an elecational view of the supporting frame of the polarized magnetic arrangement
  • FIG. 2 is a side view of the supporting frame of FIG. 1;
  • FIG. 3 is a plan view of the supporting frame of FIG. 1;
  • FIG. 4 is an elevational view showing the assembled construction of the polarized magnetic arrangement
  • FIG. 5 is a plan view of the assembled construction of FIG. 4.
  • the frame structure of the polarized magnetic arrangement has a base 1 from which are formed the posts or cores 2.
  • These posts 2 may be formed from the base 1 through the application of conventional dies in conjunction with a punch press.
  • the posts 2 When the posts 2 are bent so that they are perpendicular to the base 1, the two slots 3 are generated in the base.
  • These two slots may be employed for securing the base to a chassis or other mounting structure by passing bolts or similar fastening device through the slots 3 and the mounting structure at the underside of the base.
  • ribs 4 formed directly from the base. Aside from this, a hole 5 appears at the center of the base.
  • the supporting frame consisting of the base 1, posts 2, slots 3, ribs 4 and hole 5 is an integral structure. All of these elements of the frame may be generated from a single slice of material placed between dies in a punch press.
  • the posts 2 serve as cores for electromagnets formed as a result of the energizing coils 16 and 17.
  • an armature 6 Associated with these posts is an armature 6.
  • the armature 6 is joined to an actuator rod 7 which is slidably guided by the hole 5 in the base 1.
  • the actuator rod 7 also passes through a bearing type of hole in a permanent magnet 13.
  • the permanent magnet 13 adheres to the ribs 4 of the base 1 which forms a magnetic shunt and serves to increase the sensitivity of the arrangement because, with its presence in the magnetic circuit, a smaller amount of current is required in the coils 16 and 17 to actuate the armature 6. Due to the presence of the permanent magnet 13, the posts 2 are also made magnetic from this source.
  • the actuator rod 7 resides within a compression spring 18 which maintains an air gap between the armature 6 and the contact surfaces 11 of the cores 2 when the coils 16 and 17 are energized.
  • the spring is designed so that the force exerted by it on the armature is less than the magnetic force of the posts 2, due to the permanent magnet 13. Accordingly, when no current prevails in the coils 16 and 17, the armature is attracted to the posts 2.
  • electric current circulates through the coils, magnetic fields are induced thereby, which are oppositely directed to the field arising from the permanent magnet. The electromagnetic fields therefore operate to partially neutralize the magnetic effects due to the permanent magnet, and, accordingly, the armature becomes released when current is admitted through the coils.
  • the compression spring bears with one end against the armature 6 and with the other end against the 'base 1.
  • the width of the air gap between the armature 6 and the contact surfaces 11 is limited by the collar 15 attached to the actuator rod 7. 'It is essential that this air gap be closely controlled because if the air gap is too wide, the solenoid may fail to operate when the coils 16 and 17 are energized. On the other hand, if the air gap is too short, the solenoid actuator may be too sensitive as it may operate on a minute amount of current in the energizing coil. At the same time, the air gap is also dependent upon or determined by the movement required to actuate relay switching contacts that may be associated with the polarized magnetic arrangement or similar such switching or actuating linkage.
  • the armature 6 rests upon a shoulder of the actuator rod 7, and is secured thereto, by peening over the end 10 of the actuator rod.
  • the surfaces of the armature 6 which contact the cores 2 are polished similar to those of the contact surfaces 11.
  • the peening-over of the actuator rod 7 permits a degree of freedom of motion of the armature 6, so that when the electromagnets are deenergized, the armature 6 is brought completely in contact with the surfaces 11 of the posts 2. It is therefore desirable to include such freedom of motion of the armature 6, since close and complete contact between the contact surfaces of the armature and those of the posts result in optimum operation of the arrangement.
  • a polarized magnetic arrangement comprising, in combination, an electromagnetic solenoid unit composed of a base, two spaced pole pieces integral at one end thereof with said base and having free ends and secondary pole portions on said base integral therewith and arranged spaced from each other; a permanent magnet mounted on said electromagnetic solenoid unit in permanent contact with said spaced secondary pole pieces; an armature having portions located in the region of said free ends of said spaced pole pieces; and means mounting said armature movable towards and away from said free ends.
  • a polarized magnetic arrangement wherein said means for permanently tending to move said armature in a direction away from said pole pieces comprises an actuator rod passing through a hole in said base and said permanent magnet; collars associated with said rod and cooperating with said base and said permanent magnet so that said rod is slidably movable within said hole along a predetermined portion of said rod; and a spring mounted on said rod and bearing against said armature and said base so as to tend moving said armature in a direction away from said pole pieces.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
US564282A 1965-07-20 1966-07-11 Solenoid arrangement Expired - Lifetime US3372355A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF46657A DE1235428B (de) 1965-07-20 1965-07-20 Polarisiertes Magnetsystem fuer elektrische Relais

Publications (1)

Publication Number Publication Date
US3372355A true US3372355A (en) 1968-03-05

Family

ID=7101167

Family Applications (1)

Application Number Title Priority Date Filing Date
US564282A Expired - Lifetime US3372355A (en) 1965-07-20 1966-07-11 Solenoid arrangement

Country Status (8)

Country Link
US (1) US3372355A (xx)
AT (2) AT262427B (xx)
BE (1) BE677830A (xx)
CH (1) CH439493A (xx)
DE (2) DE1235428B (xx)
FR (1) FR1471554A (xx)
NL (1) NL6610106A (xx)
NO (1) NO119601B (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593240A (en) * 1969-03-10 1971-07-13 Whirlpool Co Solenoid structure having single sheet metal plunger and/or yoke

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK273979A (da) * 1978-06-29 1979-12-30 Cmc C M Magnetudloeser til fejlstroemsbeskyttelseskoblere

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876397A (en) * 1954-04-15 1959-03-03 Baso Inc Control device
US3154728A (en) * 1961-12-22 1964-10-27 Barber Colman Co High sensitivity magnetic relay

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876397A (en) * 1954-04-15 1959-03-03 Baso Inc Control device
US3154728A (en) * 1961-12-22 1964-10-27 Barber Colman Co High sensitivity magnetic relay

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593240A (en) * 1969-03-10 1971-07-13 Whirlpool Co Solenoid structure having single sheet metal plunger and/or yoke

Also Published As

Publication number Publication date
BE677830A (xx) 1966-08-01
NL6610106A (xx) 1967-01-23
NO119601B (xx) 1970-06-08
AT259055B (de) 1967-12-27
CH439493A (de) 1967-07-15
AT262427B (de) 1968-06-10
FR1471554A (fr) 1967-03-03
DE1942998U (de) 1966-07-28
DE1235428B (de) 1967-03-02

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