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US 5,546,061 AGranted
Plunger type electromagnetic relay with arc extinguishing structure
AssigneeNippondenso Co., Ltd.
InventorsAthuo Okabayashi, Kimikazu Nakamura, Toshihiko Sugiura
Life of this patent
Estimating the term…
Abstract
An electromagnetic relay is provided which features an arc-extinguishing structure. This electromagnetic relay includes a pair of permanent magnets which are so arranged as to have their magnetic poles oriented diametrically opposite each other across a pair of movable contacts and a pair of stationary contacts for biasing electric arcs produced between the movable and stationary contacts into given spaces defined in a relay housing.
Claims27
An electromagnetic relay comprising:
- a housing;
- a movable contact retainer having disposed thereon a pair of movable contacts;
- a stationary contact retainer disposed within said housing, having disposed thereon a pair of stationary contacts at a given interval away from the movable contacts;
- a solenoid assembly connected to said housing, said solenoid assembly moving a plunger connected to said movable contact retainer for selectively driving said movable contact:
- retainer to bring the movable contacts into engagement with and disengagement from the stationary contacts;
- and
- a pair of permanent magnets disposed within said housing diametrically opposite each other across the pair of movable contacts, said pair of permanent magnets having magnetic poles oriented opposite each other.
4 more elements
An electromagnetic relay comprising:
- a housing;
- a movable contact retainer disposed within the working chamber of said housing, said movable contact retainer having disposed thereon a pair of movable contacts;
- a stationary contact retainer disposed within said housing, having disposed thereon a pair of stationary contacts at a given interval away from the movable contacts;
- a solenoid assembly connected to said housing, said solenoid assembly moving a plunger connected to said movable contact retainer for selectively driving said movable contact retainer to bring the movable contacts intoengagement with and disengagement from the stationary contacts;
- and
- a pair of permanent magnets disposed within said housing diametrically opposite each other across the pair of movable contacts, said pair of permanent magnets having magnetic poles oriented opposite each other.
3 more elements
An electromagnetic relay comprising:
- a relay housing;
- a movable contact retainer having a pair of movable contacts disposed thereon;
- a stationary contact retainer having a pair of stationary contacts disposed thereon, a given contact gap being defined between itself and the movable contacts;
- magnetic driving means for selectively driving said movable contact retainer to bring the movable contacts into engagement with and disengagement from the stationary contacts;
- pairs of permanent magnets disposed within said relay housing, each pair being arranged to have magnetic poles oriented opposite each other across one of contact pairs composed of the movable contacts and the stationary contacts for biasing an electric arc produced in the contact gap in a given direction;
- and
- an arc-resistant member provided in said relay housing for cooling an electric arc, produced in the contact gap, biased by said permanent magnets.
4 more elements
Dependencies are inferred from the claim text.