EP0124109A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electromagnetic relay with symmetric reaction
Assignee: OFFERTA DI LICENZA AL PUBBLICO;AL PUBBLICO
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Filing: 1984-04-27
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Granted: —
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Expires: 2004-04-27
Abstract
Abstract An electromagnetic relay includes a coil wound around a core both of whose ends project therefrom. A yoke extends parallel thereto, and each of its ends is formed with two pole pieces which extend towards and lie one on each side of an end of the core with a certain gap being defined therebetween. A connecting member extends parallel to the core and the yoke and is mounted so as to be movable transversely, and means are provided for establishing and breaking some electrical connection according to such transverse movement. There are provided two armature pieces, one for each end of the core and both fixed to the connecting member. Each armature piece includes a permanent magnet plate and two plates of magnetic material fixed to it so as generally to form a C shape with one of the magnetic material plates being magnetized to be a north pole and the other a south pole. Each of the two plates of magnetic material is inserted on one side of an end of the core between it and the opposing one of the pole pieces of the yoke, into the gap therebetween. The directions of magnetization of the armature pieces are oppositely oriented. Thereby, when the relay switches over, it does so without generating any off center jerking, and thus its mounting to a base is improved. Also the quality of the magnetic circuit, and the manufacturablity of the relay, are improved.
Inventors
- 👤 Yoshihide Bando
- 👤 Kozo Maenishi
- 👤 Yoichi Nakanishi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 20:01
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H51/00; H01H51/22; H01H51/2227; H01H50/10; H01H50/14; H05; H05K; H05K1/00; H05K1/02; H05K1/0213; H05K1/0216; H05K1/0218; H05K1/18
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
249 words
An electromagnetic relay, comprising: (a) a core made of magnetic material; (b) an electromagnetic coil wound around said core so that the two ends of said core project therefrom and constitute core end poles; (c) a yoke extending generally parallel to said core, each end of said yoke being formed with two pole pieces which extend towards the corresponding end pole of said core so as to lie one on each side thereof with a certain gap being defined therebetween; (d) a connecting member extending generally parallel to said core and said yoke and mounted so as to be movable transversely to its longitudinal axis; (e) means for establishing and breaking electrical connection according to movement of said connecting member transversely to its longitudinal axis; and (f) two armature pieces, one for each end of said core, both fixed to said connecting member, and each comprising a permanent magnet plate and two plates of magnetic material fixed to said permanent magnet plate so as generally to form a C shape with one of said magnetic material plates being magnetized to be a north pole and the other being magnetized to be a south pole, each of the two plates of magnetic material being inserted on one side of said end of said core between the side of said end of said core and the opposing one of said pole pieces of said yoke into said gap therebetween; (g) the directions of magnetization of said armature pieces being oppositely oriented.
Claim 2
Dependent Claim
249 words
An electromagnetic relay, comprising: (a) a core made of magnetic material; (b) an electromagnetic coil wound around said core so that the two ends of said core project therefrom and constitute core end poles; (c) a yoke extending generally parallel to said core, each end of said yoke being formed with two pole pieces which extend towards the corresponding end pole of said core so as to lie one on each side thereof with a certain gap being defined therebetween; (d) a connecting member extending generally parallel to said core and said yoke and mounted so as to be movable transversely to its longitudinal axis; (e) means for establishing and breaking electrical connection according to movement of said connecting member transversely to its longitudinal axis; and (f) two armature pieces, one for each end of said core, both fixed to said connecting member, and each comprising a permanent magnet plate and two plates of magnetic material fixed to said permanent magnet plate so as generally to form a C shape with one of said magnetic material plates being magnetized to be a north pole and the other being magnetized to be a south pole, each of the two plates of magnetic material being inserted on one side of said end of said core between the side of said end of said core and the opposing one of said pole pieces of said yoke into said gap therebetween; (g) the directions of magnetization of said armature pieces being oppositely oriented.
Claim 3
Dependent Claim
33 words
An electromagnetic relay according to claim 1, wherein in each of said armature pieces said plates of magnetic material are fixed to the north and the south pole of said permanent magnet piece.
Claim 4
Dependent Claim
23 words
An electromagnetic relay according to claim 1, further comprising means for biasing said connection member in the direction transverse to its longitudinal axis.
Claim 5
Dependent Claim
33 words
An electromagnetic relay according to claim 3, wherein said biasing means is strong enough to remove said plates of magnetic material from said ends of said core, when said coil is not energized.
Claim 6
Dependent Claim
34 words
An electromagnetic relay according to claim 3, wherein said biasing means is not strong enough to remove said plates of magnetic material from said ends of said core, when said coil is not energized.
Claim 7
Dependent Claim
66 words
An electromagnetic relay, comprising: a base; a plurality of contact terminals projecting from said base; a plurality of ground terminals on the sides of each of the contact terminals; and a plurality of stop projections on the sides of the contact terminals, extending from said base by substantially smaller distances than do said contact terminals and said ground terminals, and electrically connected to said ground terminals.
Claim 8
Dependent Claim
66 words
An electromagnetic relay, comprising: a base; a plurality of contact terminals projecting from said base; a plurality of ground terminals on the sides of each of the contact terminals; and a plurality of stop projections on the sides of the contact terminals, extending from said base by substantially smaller distances than do said contact terminals and said ground terminals, and electrically connected to said ground terminals.
Claim 9
Dependent Claim
21 words
An electromagnetic relay according to claim 6, wherein said stop projections all extend from said base by substantially the same amount.
Claim 10
Dependent Claim
28 words
An electromagnetic relay according to claim 7, wherein the ends of said stop projections remote from said base are formed with flat surfaces substantially parallel to said base.
Claim 11
Dependent Claim
29 words
An electromagnetic relay according to claim 6, wherein the electrical connection between said stop projections and said ground terminals is provided by a metallic plated layer on said base.
Claim 12
Dependent Claim
43 words
An electromagnetic relay according to claim 9, wherein the electrical connection between said stop projections and said ground terminals is further provided by a pressed contact between said metallic plated layer and an electrically conductive connecting body which connects together said ground terminals.
Claim 13
Dependent Claim
40 words
ll. An electromagnetic relay according to claim 6, wherein said stop projections and said ground terminals are provided as integrally formed with a shield member mounted within the body of said relay, and project through holes formed in said base.
Claim 14
Dependent Claim
57 words
An electromagnetic relay, comprising; an electromagnet; an armature assembly opposed to said electromagnet which moves according to the selective energization of said electromagnet; a contact mechanism which operates according to said movement of said armature assembly; and a pair of sheet springs which support said armature assembly so that it can reciprocate along its direction of motion.
Claim 15
Dependent Claim
57 words
An electromagnetic relay, comprising; an electromagnet; an armature assembly opposed to said electromagnet which moves according to the selective energization of said electromagnet; a contact mechanism which operates according to said movement of said armature assembly; and a pair of sheet springs which support said armature assembly so that it can reciprocate along its direction of motion.
Claim 16
Dependent Claim
63 words
An electromagnetic relay according to claim 12, wherein a first one of said sheet springs is coupled to said armature assembly by its central portion and to a fixed member by its two end portions, while a second one of said sheet springs is coupled to said armature assembly by its two end portions and to a fixed member by its central portion.
Claim 17
Dependent Claim
26 words
An electromagnetic relay according to claim 13, wherein said first one of said sheet springs is loosely coupled to said armature assembly by its central portion.
Claim 18
Dependent Claim
42 words
An electromagnetic relay according to claim 14, wherein said central portion of said first one of said sheet springs is formed with a notched shape, and said armature assembly is formed with a projection; said notched shape being hooked over said projection.
Claim 19
Dependent Claim
24 words
An electromagnetic relay according to claim 15, wherein said notched shape extends along the longitudinal direction of said first one of said sheet springs.
Claim 20
Dependent Claim
58 words
An electromagnetic relay, comprising: a base formed with an insertion socket and provided with an electroconductive coating; a terminal platform having terminals mounted therein and fitted in said insertion socketi and a ground base board fixed against said base so as to pressingly hold said terminal platform in said socket and so as to contact said electroconductive coating.
Claim 21
Dependent Claim
58 words
An electromagnetic relay, comprising: a base formed with an insertion socket and provided with an electroconductive coating; a terminal platform having terminals mounted therein and fitted in said insertion socketi and a ground base board fixed against said base so as to pressingly hold said terminal platform in said socket and so as to contact said electroconductive coating.
Claim 22
Dependent Claim
20 words
An electromagnetic relay according to claim 17, wherein said ground base board is fixed against said base by mounting lugs.
Claim 23
Dependent Claim
22 words
An electromagnetic relay according to claim 17, wherein said ground base board is provided with at least one integrally formed grounding terminal.
References Cited (Backward Citations)
No citation records indexed.
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