US 11,956,908 B2
Electronic control unit and method for manufacturing electronic control unit
Yujiro Kaneko, Tokyo (JP)
Assigned to Hitachi Astemo, Ltd., Hitachinaka (JP)
Appl. No. 17/055,509
Filed by Hitachi Automotive Systems, Ltd., Hitachinaka (JP)
PCT Filed Aug. 8, 2019, PCT No. PCT/JP2019/031315
§ 371(c)(1), (2) Date Nov. 13, 2020,
PCT Pub. No. WO2020/059349, PCT Pub. Date Mar. 26, 2020.
Claims priority of application No. 2018-177534 (JP), filed on Sep. 21, 2018.
Prior Publication US 2021/0195767 A1, Jun. 24, 2021
Int. Cl. H05K 5/00 (2006.01); B29C 45/14 (2006.01); H01R 12/72 (2011.01); B29K 63/00 (2006.01); B29K 67/00 (2006.01); B29L 31/34 (2006.01); B60R 16/023 (2006.01)
CPC H05K 5/0034 (2013.01) [B29C 45/14639 (2013.01); H01R 12/724 (2013.01); B29K 2063/00 (2013.01); B29K 2067/06 (2013.01); B29L 2031/3425 (2013.01); B60R 16/023 (2013.01)] 9 Claims
OG exemplary drawing
 
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.