Electromagnetic relay
OwnerMasanao SUGISAWA, Shigeki Fujii +1inventors
InventorsMasanao SUGISAWA, Shigeki Fujii, Hitoshi Sunohara
Life of this patent
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Abstract
In an electromagnetic relay, length from a movable contact to an end portion of a movable element on a first end side is set greater than length from the movable contact to another end portion of the movable element on a second end side opposite to the first end side. A direction of a Lorentz force acting on a portion of the movable element from the movable contact to the end portion of the movable element on the first end side is conformed to a direction for bringing fixed contacts and movable contacts into contact with each other. Thus, separation between the movable contacts and the fixed contacts due to an electromagnetic repulsive force can be inhibited.
Claims2
1-5. (canceled)
An electromagnetic relay comprising:
- a coil for generating an electromagnetic force when energized;
- a movable member capable of being attracted by the electromagnetic force of the coil;
- two fixed contact retainers having fixed contacts;
- a plate-like movable element having a first movable contact and a second movable contact capable of contacting the fixed contacts and separating from the fixed contacts;
- a contact pressure spring for biasing the movable element in a direction for bringing the fixed contacts and the first and second movable contacts into contact with each other;
- and
- a magnet arranged to be lateral to an outer periphery of a movable contact intermediate portion of the movable element positioned between the first movable contact and the second movable contact, wherein
- when the movable member is attracted by the electromagnetic force of the coil, the movable member moves in a direction for separating from the movable element and the fixed contacts contact the first movable contact and the second movable contact because the contact pressure spring biases the movable element, and
- a Lorentz force acting on the movable element is directed in a direction for bringing the fixed contacts and the first and second movable contacts into contact with each other.
Dependencies are inferred from the claim text.