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US 10,679,812 B2Granted
Electromagnetic relay
AssigneeAnden Co., Ltd.
InventorsTomoaki Tanaka, Makoto Kamiya, Mikihiro Kamiya
Life of this patent
Estimating the term…
Abstract
An electromagnetic relay includes a casing having a housing space open to an external to the casing through an opening. A base is joined to the casing to close the opening. A coil, a pair of fixed contact elements and a pair of movable contact elements are housed in the housing space. A vent hole set to a dimension making it possible to extinguish flame passing therethrough is formed in a portion where the casing and the base are joined together.
Claims3
An electromagnetic relay comprising:
- a casing having a housing space open through an opening to an external to the casing;
- a base joined to the casing to close the opening;
- a coil disposed in the housing space to generate an electromagnetic force upon an energization of the coil;
- a pair of fixed contact elements fixed to the base and having an end disposed in the housing space;
- a movable contact element disposed in the housing space and driven by the electromagnetic force generated by the coil to contact or separate from the fixed contact elements;
- and
- a plurality of vent holes through which the housing space communicate with the external, the vent hole being set to a dimension making it possible to extinguish flame passing through the vent hole, wherein the plurality of vent holes are arranged in a portion where the casing and the base are joined together, and
- one of the casing and the base has a plurality of protrusions having tip ends contacting another of the casing and the base such that the plurality of protrusions define the plurality of vent holes between the casing and the base.
5 more elements
Dependencies are inferred from the claim text.