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EP0040778A1
Expired / Lapsed
EP
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Polarized electromagnetic device
Assignee: Omron Corp
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Filing: 1981-05-16
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Granted: —
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Expires: 2001-05-16
Abstract
Abstract Polarized electromagnetic device comprising a generally I-shaped magnetic core member, a coil which is wound on a center portion of the core member, a pair of permanent magnets which are arranged in parallel with and outside of the respective end portions of the core member, and mutually confronting first and second armature plate members which are jointed together through the pair of permanent magnets at the opposite end portions of the armature plate members so as to provide a spacing for accommodating the core member between the armature plate members leaving a gap, the core member and armature plate members being supported to be swingable for relative movement with respect to a center transverse axis of the center portion of the core member.
Inventors
- 👤 Yoshihide Bando
- 👤 Toshiki Tanaka
- 👤 Sueaki Honda
- 👤 Yoshihiko Takahashi
- 👤 Kenichi Tsuruyoshi
- 👤 Katsumi Kawashima
- 👤 Syuichi Kishimoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 13:12
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/22; H01H51/2227
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
122 words
Polarized electromagnetic device comprising a generally I-shaped magnetic core member carring a coil winding on a central portion thereof, a pair of permanent magnets which are arranged in parallel with and outwardly of the respective end portions of said core member, and a first and a second armature plate member which are mutually confronting and jointed together through said pair of permanent magnets at the opposite end portions of said armature plate members so as to provide a spacing for accommodating said core member between said armature plate members leaving a gap, said core mamber and armature plate members being supported to be swingable for relative movement with respect to a center transverse axis of said center portion of the core member.
Claim 2
Dependent Claim
122 words
Polarized electromagnetic device comprising a generally I-shaped magnetic core member carring a coil winding on a central portion thereof, a pair of permanent magnets which are arranged in parallel with and outwardly of the respective end portions of said core member, and a first and a second armature plate member which are mutually confronting and jointed together through said pair of permanent magnets at the opposite end portions of said armature plate members so as to provide a spacing for accommodating said core member between said armature plate members leaving a gap, said core mamber and armature plate members being supported to be swingable for relative movement with respect to a center transverse axis of said center portion of the core member.
Claim 3
Dependent Claim
49 words
Polarized electromagnetic device according to Claim 1, wherein said core member is stationarily supported and said armature plate members are pivotally supported so as to allow the respective end portions of said core member to alternately move toward and contact an inner wall surface of said armature plate members.
Claim 4
Dependent Claim
24 words
Polarized electromagnetic device according to Claim 1, wherein each of said armature plate members is provided with an opening to accomodate said wound coil.
Claim 5
Dependent Claim
44 words
Polarized electromagnetic device according to Claim 1 further comprising a pair of non-magnetic spacers disposed in a pair of gaps through which the respective end portions of said core member attract their confronting portions of said armature plate members upon energization to said coil.
Claim 6
Dependent Claim
35 words
Polarized electromagnetic device according to Claim 3, wherein each of said armature plate members has a first end portion and a second end portion said first portion being broader than said second portion in size.
Claim 7
Dependent Claim
48 words
Polarized electromagnetic device according to Claim 1 which furhter comprises a contact carrying member including a base made of electrically insulating material and a contact mechanism and means for actuating said contact mechanism in response to the swing movement of said core member or said armature plate members.
Claim 8
Dependent Claim
43 words
Polarized electromagnetic device according to Claim 6, wherein said core is stationarily supported by said base, and said actuating means is a pivotally supported matrix member which carries said armature plate members and includes at least one projection for actuating said contact mechanism.
Claim 9
Dependent Claim
28 words
Polarized electromagnetic device according to Claim 7, wherein said matrix member includes an insulating wall for separating said contact mechanism from said core member wound with the coil.
Claim 10
Dependent Claim
53 words
Polarized electromagnetic device according to Claim 7, wherein said matrix member is a insert-molded plastic matrix carrying said second armature plate member and at its periphery includes an island surrounded with a groove so as to adhere said first armature plate member to a top surface of said island with an adhesive material.
Claim 11
Dependent Claim
65 words
Polarized electromagnetic device according to Claim 7, wherein said base comprised inner and outer walls which therebetween form an opening extending vertically through the entire thickness of the base so as to be filled with a sealant from a bottom side thereof to thereby seal and secure in position said base, said core member engaged with the base and a cover fitted onto said base.
References Cited (Backward Citations)
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