US 11,758,667 B2
Electronic control unit
Masato Saito, Hitachinaka (JP); and Michihito Watarai, Hitachinaka (JP)
Assigned to Hitachi Astemo, Ltd., Hitachinaka (JP)
Appl. No. 17/595,667
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
PCT Filed May 15, 2020, PCT No. PCT/JP2020/019401
§ 371(c)(1), (2) Date Nov. 22, 2021,
PCT Pub. No. WO2020/235464, PCT Pub. Date Nov. 26, 2020.
Claims priority of application No. 2019-096704 (JP), filed on May 23, 2019.
Prior Publication US 2022/0225516 A1, Jul. 14, 2022
Int. Cl. H05K 5/00 (2006.01); B60R 16/023 (2006.01); H05K 5/03 (2006.01)
CPC H05K 5/0056 (2013.01) [B60R 16/0238 (2013.01); B60R 16/0239 (2013.01); H05K 5/0017 (2013.01); H05K 5/03 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An electronic control unit comprising:
an electronic control board;
a connector provided on one end side of one surface of the electronic control board;
a cover provided on the one surface side and covering the electronic control board and the connector; and
a base provided on another surface side of the electronic control board so as to face the cover; and
a seal member interposed between the connector and the cover,
wherein the connector includes:
a connector main body;
a plurality of terminals arranged in a longitudinal direction of the connector main body and provided so as to protrude from the connector main body toward the one end side,
the connector main body includes:
an attachment surface attached to the electronic control board;
a seal arrangement portion which is positioned on a surface on a side facing the attachment surface and on which the seal member is disposed,
the seal arrangement portion includes:
a first seal arrangement portion formed in an arrangement direction of the terminals;
a second seal arrangement portion that is continuous with both end portions of the first seal arrangement portion and is inclined toward the electronic control board as it goes toward another end side facing the one end side of the electronic control board,
the first seal arrangement portion includes a plurality of predetermined portions formed so as to be directed toward the electronic control board side from a center side of the first seal arrangement portion toward both end sides of the first seal arrangement portion at both end portions of the first seal arrangement portion,
the cover includes a plurality of bent portions formed so as to be directed toward the electronic control board side from a center side of the cover toward both end sides of the cover, and
each of the predetermined portions is in contact with each of the bent portions,
wherein the first seal arrangement portion includes a flat surface seal arrangement portion between the predetermined portions, and
the seal member is disposed in the flat surface seal arrangement portion in the arrangement direction of the terminals,
wherein the flat surface seal arrangement portion includes a flat surface-side groove portion in which the seal member is disposed,
each of the predetermined portions includes:
a predetermined groove portion continuous with the flat surface-side groove portion; and
an end-side groove portion continuous with the predetermined groove portion and the second seal arrangement portion,
the predetermined groove portion is formed in a shape directed toward the electronic control board side from a center side of the first seal arrangement portion toward both end sides of the first seal arrangement portion, and
the end-side groove portion is positioned closer to the electronic control board than the flat surface-side groove portion,
wherein the predetermined portion further includes a predetermined bank portion formed by the predetermined groove portion, and
the predetermined bank portion has an arc shape in which an inclination of a tangent of the predetermined bank portion in the arrangement direction of the terminals gradually changes from one end of the predetermined bank portion on a central side of the first seal arrangement portion toward another end of the predetermined bank portion on both end sides of the first seal arrangement portion.