Patent ID: 11956908
Assignee: HITACHI ASTEMO, LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. An electronic control unit comprising:
a control board on which an electronic component is mounted; and
an enclosure in which the control board is sealed with resin,
wherein the enclosure has a shape in which a volume of resin on a first surface side of the control board is larger than a volume of resin on a second surface side,
a gate mark is formed in the enclosure,
a length of the gate mark in a thickness direction of the control board is formed to be larger than a thickness of the control board,
the control board is located such that a side surface partially overlaps a projection region of the gate mark,
the control board is arranged toward the second surface side relative to a center of the gate mark, and
an area ratio between an area of the gate mark on the first surface side with respect to the control board and an area of the gate mark on the second surface side with respect to the control board and a volume ratio between a volume of the enclosure on the first surface side with respect to the control board and a volume of the enclosure on the second surface side with respect to the control board are formed to be substantially equal to each other.