Patent attributes
An electronic unit includes: a case; a circuit board; and a cover, wherein a portion of a connector, which is provided on the circuit board, to be connected to a mating connector is exposed to the outside through a through hole of the cover, a first clearance portion and a second clearance portion are provided in at least one of a portion located between the cover and the case at a position of the opening and a portion located between the cover and the connector at a position of the through hole, a clearance in the first clearance portion is larger than a clearance in the second clearance portion, the second clearance portion is located on an inner side of the case relative to the first clearance portion, and the first clearance portion extends and reaches the second clearance portion while maintaining a constant clearance.