EP0293199A2
Expired / Lapsed
EP
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Electromagnetic relay
Assignee: NEC Corp
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Filing: 1988-05-26
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Granted: —
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Expires: 2008-05-26
Abstract
Abstract An electromagnetic relay includes a coil assembly having a permanent magnet arranged so that one of its magnetic poles contacts the centre of a U-shaped core on which a coil is wound, an armature assembly in which the ends of an armature are arranged opposite to respective ends of the core, hinge springs enable the ends of the armature to come into contact with or be separated from the respective ends of the core in a seesaw movement, and movable contact springs cooperate with the seesaw movement of the armature, and in which the armature, the hinge spring and the movable spring are integrally fixed with an insulating moulded member, an insulating base having a box-like shape with an opening on the top thereof, stationary contact terminals having stationary contacts to oppose the movable contacts of the movable contact springs and common terminals for connection to one end of the hinge springs when the coil assembly is placed within the opeing and when the armature assembly is arranged in such a manner that the other magnetic pole of the magnet acts as a supporting point for the seesaw movement of the armature.
Inventors
- 👤 Kiyotaka Yokoo
- 👤 Matsujiro Ikeda
- 👤 Hideki Hitachi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 10:19
CPC Classifications
H; H01; H01H; H01H5/00; H01H5/04; H01H5/18; H01H5/22; H01H51/00; H01H51/22; H01H51/2272; H01H51/2281; H01H51/229; H01H50/00; H01H50/02; H01H50/04; H01H50/041; H01H50/043; H01H2050/044
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
194 words
An electromagnetic relay comprising: a coil assembly having a permanent magnet arranged in a manner to cause one of the magnetic poles to contact with the center of a U-shaped core which is wound with a coil; an armature assembly including an armature having both ends to oppose both ends of said core, hinge springs for supporting a seesaw movement of the both ends of the armature which come to contact or separate from both ends of said core respectively, and movable contact springs cooperating with the seesaw movement of said armature, the armature, the hinge spring and the movable spring being integrally fixed with an insulating molded member; and an insulating base having a box-like shape with an opening on the top thereof and including stationary contact terminals having stationary contacts to oppose movable contacts of said movable contact springs and common terminals to be connected to one end of said hinge springs, when said coil assembly is placed within said opening and when said armature assembly is arranged in a manner so that the other magnetic pole of said magnet acts as a supporting point for the seesaw movement of said armature.
Claim 2
Dependent Claim
194 words
An electromagnetic relay comprising: a coil assembly having a permanent magnet arranged in a manner to cause one of the magnetic poles to contact with the center of a U-shaped core which is wound with a coil; an armature assembly including an armature having both ends to oppose both ends of said core, hinge springs for supporting a seesaw movement of the both ends of the armature which come to contact or separate from both ends of said core respectively, and movable contact springs cooperating with the seesaw movement of said armature, the armature, the hinge spring and the movable spring being integrally fixed with an insulating molded member; and an insulating base having a box-like shape with an opening on the top thereof and including stationary contact terminals having stationary contacts to oppose movable contacts of said movable contact springs and common terminals to be connected to one end of said hinge springs, when said coil assembly is placed within said opening and when said armature assembly is arranged in a manner so that the other magnetic pole of said magnet acts as a supporting point for the seesaw movement of said armature.
Claim 3
Dependent Claim
38 words
The electromagnetic relay as claimed in Claim 1 wherein at least one projection is provided on each end of said core while notches are cut in a shape corresponding to said projections on both ends of said armature.
Claim 4
Dependent Claim
76 words
The electromagnetic relay as claimed in Claim 2 wherein said U-shaped core has dents on corners of the coil wound section having a polygonal cross section and the portion near the dents are molded with resin to form a coil spool, and at least one of the surfaces of said core is exposed, and the surface of said mold is raised higher than the surface of said core on both sides of the exposed core surface.
Claim 5
Dependent Claim
76 words
The electromagnetic relay as claimed in Claim 1 wherein said U-shaped core has dents on corners of the coil wound section having a polygonal cross section and the portion near the dents are molded with resin to form a coil spool, and at least one of the surfaces of said core is exposed, and the surface of said mold is raised higher than the surface of said core on both sides of the exposed core surface.
Claim 6
Dependent Claim
42 words
The electromagnetic relay as claimed in Claim 1 wherein the insulating molded member of said armature assembly is formed in a manner to enclose the supporting point contacting the other end of said magnet on the lower central surface of the armature.
Claim 7
Dependent Claim
43 words
The electromagnetic relay as claimed in Claim 1 wherein said coil assembly includes a coil spool formed by insert-molding said core for end flanges and central flange thereof, and said permanent magnet is a plastic magnet forming said central flange of said spool.
Claim 8
Dependent Claim
43 words
The electromagnetic relay as claimed in Claim 1 wherein the hinge springs of said armature assembly extend from said insulating molded member toward both sides of the armature assembly and is bent in the form of a crank in the intermediate portion thereof.
Claim 9
Dependent Claim
142 words
An electromagnetic relay comprising: a plate-like core wound with a coil which is formed as a whole in the shape of a letter U, and is provided with projections respectively on both sides of the ends; a permanent magnet being in contact with said core; a plate-like armature which can be moved in a seesaw manner so as to cause both ends thereof to contact with or separate from both ends of said core; movable contact springs moving in accordance with said armature in the seesaw movement; and a base having stationary contacts with which movable contacts of said movable contact springs come to contact or separate from in said seesaw movement; ends of said armature passes between said projections provided on both sides of the core end when the armature ends come to contact with or separate from said core ends.
Claim 10
Dependent Claim
142 words
An electromagnetic relay comprising: a plate-like core wound with a coil which is formed as a whole in the shape of a letter U, and is provided with projections respectively on both sides of the ends; a permanent magnet being in contact with said core; a plate-like armature which can be moved in a seesaw manner so as to cause both ends thereof to contact with or separate from both ends of said core; movable contact springs moving in accordance with said armature in the seesaw movement; and a base having stationary contacts with which movable contacts of said movable contact springs come to contact or separate from in said seesaw movement; ends of said armature passes between said projections provided on both sides of the core end when the armature ends come to contact with or separate from said core ends.
References Cited (Backward Citations)
No citation records indexed.
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