RESIN-SEALED IN-VEHICLE ELECTRONIC CONTROL DEVICE
A resin-sealed in-vehicle electronic control device in the present disclosure is a resin-sealed in-vehicle electronic control device including a circuit board on which an electronic component is mounted, a connector housing that electrically connects the circuit board to an external terminal, and a sealing resin fixing the connector housing to the circuit board. The connector housing has a through hole allowing communication between a second end surface located opposite to a first end surface on which the external terminal is mounted and a side surface of the connector housing adjoining the second end surface, and the sealing resin is continuous to fill at least the inside of the through hole and cover a part of an outer periphery of the connector housing and at least a part of an outer periphery of the circuit board.
1 . A resin-sealed in-vehicle electronic control device comprising:
a circuit board on which an electronic component is mounted;
a connector housing that electrically connects the circuit board to an external terminal; and
a sealing resin fixing the connector housing to the circuit board,
wherein
the connector housing has a through hole and/or a cut-out portion allowing communication between a second end surface located opposite to a first end surface on which the external terminal is mounted and a side surface of the connector housing adjoining the second end surface, and
the sealing resin is continuous to fill at least the inside of the through hole and/or the cut-out portion and cover a part of an outer periphery of the connector housing and at least a part of an outer periphery of the circuit board.
2 . The resin-sealed in-vehicle electronic control device according to claim 1 , wherein the connector housing has a linear expansion coefficient larger than that of the sealing resin.
3 . The resin-sealed in-vehicle electronic control device according to claim 1 , wherein
the through hole and/or the cut-out portion allowing communication between the second end surface and the side surface of the connector housing adjoining the second end surface is a through hole, and
the through hole has a substantially “L” shape or a substantially straight-line shape.
4 . The resin-sealed in-vehicle electronic control device according to claim 1 , wherein
the through hole and/or the cut-out portion allowing communication between the second end surface and the side surface of the connector housing adjoining the second end surface is a cut-out portion, and
the cut-out portion has a shape in which a width of the cut-out portion on the side surface is smaller than a maximum width in the cut-out portion, when viewed from the second end surface.
5 . The resin-sealed in-vehicle electronic control device according to claim 1 , further comprising an elastic member covering at least a part of an externally exposed portion at a boundary between the connector housing and the sealing resin.