EP0204199A2
Expired / Lapsed
EP
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Electromagnetic relay
Assignee: Panasonic Industry Europe GmbH
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Filing: 1986-05-16
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Granted: —
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Expires: 2006-05-16
Abstract
Abstract An electromagnetic relay includes a base of electrically insulation for mounting an electromagnet, an armature and at least one contact assembly including a movable contact. Integrally molded with the base is an envelop having side walls and a top wall for receiving therein the electromagnet which envelop defines on the base outwardly thereof a space for mounting the contact assembly. The side wall of the envelop extends along the entire length of the electromagnet in order to completely separate the contact assembly located outwardly of the envelop from the electromagnet along the entire length thereof for increased insulation resistance therebetween. The armature is mounted on the top wall of the envelop to be movable within a horizontal plane on the top wall and is operatively connected to the movable contact of the contact assembly by a card extending over the side wall adjacent thereto. The electromagnet, contact assembly and armature are arranged in dense-packed manner on the base while the electromagnet is effectively insulated by the envelop from the contact assembly, whereby assuring higher current carrying capacity with a miniaturized construction of the relay.
Inventors
- 👤 Masanori Motoyama
- 👤 Toyotaka Nishikawa
- 👤 Masashi Nakagawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 15:13
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/22; H01H51/24; H01H50/00; H01H50/02; H01H50/026; H01H51/2227; H01H50/04; H01H50/041; H01H50/043; H01H2050/044
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
181 words
An electromagnetic relay comprising a mount base of electrically insulative material characterized in that the mount base is provided with an integrally molded envelop having a top wall and side walls; at least one contact assembly is mounted on the base outwardly of one of the side walls of the envelop, said contact assembly including a movable contact; an electromagnet is received within the envelop to be electrically insulated along the entire length thereof from the contact assembly by the side wall of the envelop; an armature which is mounted on the top wall of the envelop to be movable within a plane parallel to the plane of the base and which is magnetically coupled to the electromagnet for movement in response to the energization of the electromagnet; and said armature being provided with at least one card of electrically insulative material which extends sideward over the adjacent side wall of the envelop to be connected to the movable contact such that the movable contact is driven by the armature for making the switching operation thereof upon energization of the electromagnet.
Claim 2
Dependent Claim
181 words
An electromagnetic relay comprising a mount base of electrically insulative material characterized in that the mount base is provided with an integrally molded envelop having a top wall and side walls; at least one contact assembly is mounted on the base outwardly of one of the side walls of the envelop, said contact assembly including a movable contact; an electromagnet is received within the envelop to be electrically insulated along the entire length thereof from the contact assembly by the side wall of the envelop; an armature which is mounted on the top wall of the envelop to be movable within a plane parallel to the plane of the base and which is magnetically coupled to the electromagnet for movement in response to the energization of the electromagnet; and said armature being provided with at least one card of electrically insulative material which extends sideward over the adjacent side wall of the envelop to be connected to the movable contact such that the movable contact is driven by the armature for making the switching operation thereof upon energization of the electromagnet.
Claim 3
Dependent Claim
220 words
An electromagnetic relay comprising a mount base of electrically insulative material characterized in that the mount base is provided with an integrally molded envelop having a top wall and side walls; at least one contact assembly is mounted on the base outwardly of one of the side walls of the envelop, said contact assembly including a movable contact extending along the adjacent side wall; an electromagnet is received within the envelop to be electrically insulated along the entire length thereof from the contact assembly by said side wall of the envelop; a flat armature which is mounted on the top wall of the envelop to be movable within a plane parallel to the plane of the base; said armature having at its rear end pole means which extends through a window in the rear end portion of the top wall into the envelop where it is magnetically coupled with a pole end at the rear end of the electromagnet for movement on the top wall upon energization of the electromagnet; and said armature including at least one card of electrically insulative material which extends sidewards over the side wall of the envelop to be connected to the movable contact such that the movable contact is driven through the armature for making the switching operation thereof upon energization of the electromagnet.
Claim 4
Dependent Claim
220 words
An electromagnetic relay comprising a mount base of electrically insulative material characterized in that the mount base is provided with an integrally molded envelop having a top wall and side walls; at least one contact assembly is mounted on the base outwardly of one of the side walls of the envelop, said contact assembly including a movable contact extending along the adjacent side wall; an electromagnet is received within the envelop to be electrically insulated along the entire length thereof from the contact assembly by said side wall of the envelop; a flat armature which is mounted on the top wall of the envelop to be movable within a plane parallel to the plane of the base; said armature having at its rear end pole means which extends through a window in the rear end portion of the top wall into the envelop where it is magnetically coupled with a pole end at the rear end of the electromagnet for movement on the top wall upon energization of the electromagnet; and said armature including at least one card of electrically insulative material which extends sidewards over the side wall of the envelop to be connected to the movable contact such that the movable contact is driven through the armature for making the switching operation thereof upon energization of the electromagnet.
Claim 5
Dependent Claim
96 words
An electromagnetic relay as set forth in claim 1, characterized in that said electromagnet includes a coil bobbin around which coil means is wound, said coil bobbin being formed at its front end with a flange which carries coil terminals for the coil means; and wherein said envelop is formed with at least one insulation lip which extends sidewards and outwardly from the front end of the side wall adjacent to said contact assembly, said envelop forming on the front of the insulation lip a recess for receiving therein said flange of the coil bobbin such
Claim 6
Dependent Claim
4 words
LIST OF REFERENCE NUMERALS
Claim 7
Dependent Claim
4 words
LIST OF REFERENCE NUMERALS
Claim 8
Dependent Claim
180 words
1 base 2 notch 3 slit 5 cover 6 header space 7 partition 8 bent portion 9 aperture 10 envelop 11 side wall 12 rear end wall 13 top wall 14 mouth 15 insulation lip 16 rim 17 recess 18 indent 19 window 20 pivot pin 21 upward extension 22 upward extension 24 furrow 30 electromagnet 31 coil bobbin 32 coil 33 yoke 34 leg 35 web 36 core 37 protrusion 38 flange 39 rear flange 40 coil terminal 41 coil terminal 42 upper end 43 tab 50 contact assembly 51 movable contact 52 contact tip 53 terminal plate 54 lug 55 fixed contact 56 contact tip 57 lug 60 armature 61 swing plate 62 permanent magnet 63 pole piece 64 frame 65 bearing hole 66 card 67 first leg 68 second leg 69 skirt 70 flap 71 slot 72 flat portion 80 contact assembly 81 movable spring 85 fixed contact 90 armature 91 swing plate that the coil terminals on the flange are insulatively separated by the insulation lip from the contact assembly disposed rearwardly of the insulation lip.
Claim 9
Dependent Claim
180 words
1 base 2 notch 3 slit 5 cover 6 header space 7 partition 8 bent portion 9 aperture 10 envelop 11 side wall 12 rear end wall 13 top wall 14 mouth 15 insulation lip 16 rim 17 recess 18 indent 19 window 20 pivot pin 21 upward extension 22 upward extension 24 furrow 30 electromagnet 31 coil bobbin 32 coil 33 yoke 34 leg 35 web 36 core 37 protrusion 38 flange 39 rear flange 40 coil terminal 41 coil terminal 42 upper end 43 tab 50 contact assembly 51 movable contact 52 contact tip 53 terminal plate 54 lug 55 fixed contact 56 contact tip 57 lug 60 armature 61 swing plate 62 permanent magnet 63 pole piece 64 frame 65 bearing hole 66 card 67 first leg 68 second leg 69 skirt 70 flap 71 slot 72 flat portion 80 contact assembly 81 movable spring 85 fixed contact 90 armature 91 swing plate that the coil terminals on the flange are insulatively separated by the insulation lip from the contact assembly disposed rearwardly of the insulation lip.
Claim 10
Dependent Claim
96 words
An electromagnetic relay as set forth in claim 1, characterized in that said electromagnet includes U-shaped yoke with parallel legs which are magnetized by the energization of the coil and define therebetween a gap within which the pole means of the armature moves in response to the energization of the electromagnet; the outer face of each yoke leg being kept in intimate contact with the inner surface of the adjacent side wall of the envelop such that the legs of the yoke are kept in a fixed position to maintain said gap at a predetermined distance.
Claim 11
Dependent Claim
189 words
An electromagnetic relay as set forth in claim 1, characterized in that said electromagnet includes a coil bobbin carrying thereabout a set coil and a reset coil, three coil terminals one being common to the set and reset coils and the two others each connected to each one of the set and reset coils, said coil bobbin being formed at its front end with a flange which carries two of the coil terminals; and wherein said envelop is formed with at least one insulation lip which extends sidewards and outwardly from the front end of the side wall adjacent to said contact assembly, said envelop forming on the front of the insulation lip a recess for receiving therein said flange of the coil bobbin such that the two coil terminals held on the flange is insulatively separated by the insulation lip from the contact assembly disposed rearwardly of the insulation lip, and said insulation lip being provided in its front surface with an indent for receiving the remaining coil terminal so as to insulatively separate the latter coil terminal from the contact assembly disposed rearwardly of the insulation lip.
Claim 12
Dependent Claim
55 words
An electromagnetic relay as set forth in claim 1, characterized in that a cover of electrically insulative material which fits over the armature and the contact assembly on the base, said base being provided with support wall means which extends upwardly above the armature to be in supporting contact with the ceiling of the cover.
Claim 13
Dependent Claim
152 words
An electromagnetic relay as set forth in claim 1, characterized in that said card is formed with a slot through which said movable contact extends for driving connection with the card, said movable contact extending through the slot in a loose manner such that the movable contact is brought into abutting engagement with one of the opposed faces of the slot when the armature drives the movable contact to move the same in the direction of making the contact and that the movable contact is brought into abutting engagement with the other face of the slot when the armature drives the movable contact to move the same in the opposite direction of breaking the contact against the bias of the movable contact, and said other face of the slot being configured to have a flat portion in face-to-face contacting engagement with the part of the movable contact with respect to its length.
Claim 14
Dependent Claim
229 words
An electromagnetic relay comprising a mount base of electrically insulative material characterized in that the mount base is provided with an integrally molded envelop having a top wall and side walls; a pair of contact assemblies is each mounted on the base outwardly of each of the side walls of the envelop, each contact assembly including a movable contact extending along the adjacent side wall; an electromagnet is received within the envelop to be electrically insulated along the entire length thereof from each of the contact assemblies by the adjacent side walls of the envelop; a flat armature which is mounted on the top wall of the envelop to be movable within a plane parallel to the plane of the base; said armature being provided at its rear end with a pole end which extends through a window in the rear end portion of the top wall into the envelop where it is magnetically coupled with the rear end of the electromagnet for movement on the top wall upon energization of the electromagnet; and said armature having on either side thereof a card of electrically insulative material which extends over the adjacent side wall of the envelop to be connected to the movable contact of each contact assembly such that the movable contacts are driven by the armature for making the switching operation thereof upon energization of the electromagnet.
Claim 15
Dependent Claim
229 words
An electromagnetic relay comprising a mount base of electrically insulative material characterized in that the mount base is provided with an integrally molded envelop having a top wall and side walls; a pair of contact assemblies is each mounted on the base outwardly of each of the side walls of the envelop, each contact assembly including a movable contact extending along the adjacent side wall; an electromagnet is received within the envelop to be electrically insulated along the entire length thereof from each of the contact assemblies by the adjacent side walls of the envelop; a flat armature which is mounted on the top wall of the envelop to be movable within a plane parallel to the plane of the base; said armature being provided at its rear end with a pole end which extends through a window in the rear end portion of the top wall into the envelop where it is magnetically coupled with the rear end of the electromagnet for movement on the top wall upon energization of the electromagnet; and said armature having on either side thereof a card of electrically insulative material which extends over the adjacent side wall of the envelop to be connected to the movable contact of each contact assembly such that the movable contacts are driven by the armature for making the switching operation thereof upon energization of the electromagnet.
Claim 16
Dependent Claim
197 words
An electromagnetic relay comprising a mount base of electrically insulative material characterized in that the mount base is provided with an integrally molded envelop having a top wall and side walls; a single contact assembly is mounted on the base laterally outwardly of the side wall of the envelop, said contact assembly including a movable contact in the form of an elongate spring; an electromagnet is received within the envelop to be electrically insulated along the entire length thereof from the contact assembly by the side wall of the envelop; an armature pivotally supported on the top wall of the envelop to be movable about a pivot axis within a plane parallel to the base and magnetically coupled to the electromagnet for movement in response to energization of the electromagnet; said armature being provided with a card of electrically insulative material which extends over the side wall of the envelop to be connected to the movable spring such that the movable spring is driven through the card for making the switching operation thereof in response to said energization of the electromagnet; and said pivot axis being located on the extension of the length of the movable spring.
Claim 17
Dependent Claim
197 words
An electromagnetic relay comprising a mount base of electrically insulative material characterized in that the mount base is provided with an integrally molded envelop having a top wall and side walls; a single contact assembly is mounted on the base laterally outwardly of the side wall of the envelop, said contact assembly including a movable contact in the form of an elongate spring; an electromagnet is received within the envelop to be electrically insulated along the entire length thereof from the contact assembly by the side wall of the envelop; an armature pivotally supported on the top wall of the envelop to be movable about a pivot axis within a plane parallel to the base and magnetically coupled to the electromagnet for movement in response to energization of the electromagnet; said armature being provided with a card of electrically insulative material which extends over the side wall of the envelop to be connected to the movable spring such that the movable spring is driven through the card for making the switching operation thereof in response to said energization of the electromagnet; and said pivot axis being located on the extension of the length of the movable spring.
References Cited (Backward Citations)
No citation records indexed.
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