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US 5,757,255 AGranted
Electromagnetic relay
AssigneeOMRON Corporation
InventorsMasayuki Noda, Takeshi Suzuki, Takashi Noguchi, Tatsuo Shinoura, Takashi Asao
Life of this patent
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Abstract
In an electromagnetic relay in which a contact mechanism 50 provided on a base 10 is driven by a card 60 which slides and moves in parallel to the axis of an electromagnet block 20 provided in the base 10 as the electromagnet block 20 is magnetized and demagnetized, the base 10 comprises a guide portion 17 for restricting the card 60 in its position. This prevents variations in the performance characteristics so that high productivity and long service life of contacts can be obtained.
Claims7
An electromagnetic relay which comprises:
- a base having an insulating wall of a generally U-shape in its plan view molded integrally at a generally center of a top surface of the base;
- an electromagnet block which is formed by winding a coil around an iron core and which is located at the top surface of the base so as to be surrounded by the insulating wall on one end side thereof;
- a contact mechanism located on one side of the top surface of the base partitioned by the insulating wall from one end side of the electromagnet block;
- an insulating cover covering an upper opening of the insulating wall;
- and a card for driving the contact mechanism by moving reciprocatingly and axially above the insulating cover as the electromagnet block is energized and de-energized.
2 more elements
Dependencies are inferred from the claim text.