US 12,464,668 B2
Electrical control unit with sealant between a cover, a base, and an electrical connector
Masato Saito, Hitachinaka (JP); and Michihito Watarai, Hitachinaka (JP)
Assigned to Hitachi Astemo, Ltd., Hitachinaka (JP)
Appl. No. 17/919,452
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
PCT Filed Feb. 2, 2021, PCT No. PCT/JP2021/003646
§ 371(c)(1), (2) Date Oct. 17, 2022,
PCT Pub. No. WO2021/215067, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. 2020-075425 (JP), filed on Apr. 21, 2020.
Prior Publication US 2023/0156948 A1, May 18, 2023
Int. Cl. H05K 5/06 (2006.01); B60R 16/02 (2006.01); H01R 13/52 (2006.01); H05K 5/00 (2006.01); H05K 5/02 (2006.01)
CPC H05K 5/062 (2013.01) [B60R 16/02 (2013.01); H01R 13/5202 (2013.01); H05K 5/0052 (2013.01); H05K 5/0069 (2013.01); H01R 13/52 (2013.01); H05K 5/0056 (2013.01); H05K 5/006 (2013.01); H05K 5/0204 (2013.01); H05K 5/061 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An electronic control unit comprising:
a base member that has a recessed part on an outer periphery and an accommodation space for an electronic circuit board formed on the inner peripheral side of the recessed part;
a cover member that covers the electronic circuit board and is attached to the base member by inserting a lower end of a side wall into the recessed part;
a connector housing that has a connector and is at least partially accommodated between the base member and the cover member;
a first seal part that is provided in the recessed part and seals between the base member and the cover member;
a second seal part that is provided in the recessed part and seals between the base member and the connector housing; and
a third seal part that is connected to the first seal part and the second seal part and seals between the cover member and the connector housing, wherein
the recessed part has a space part that is connected to the recessed part and is recessed further from a surface forming the recessed part in a part where the first seal part, the second seal part, and the third seal part intersect,
the recessed part is formed in the base member so as to be recessed in a thickness direction of the base member, and
the space part is formed in the base member so as to be recessed deeper than the recessed part in the thickness direction of the base member, and is disposed in a position within the recessed part that is shifted toward the inside of the base member with respect to the lower end of the side wall of the cover member.