Electronic Circuit Unit

摘要

To increase vibration resistance of a connection terminal, a tip of which is soldered to a circuit board. In a controller, the circuit board is accommodated in a controller housing made of metal, and the tip of the connection terminal that extends from an actuator housing through an opening is fixed to the circuit board. Semiconductor switching elements and electrolytic capacitors as heat generating components are collectively arranged in an area of the circuit board adjacent to the connection terminal, and the circuit board is adhered and fixed to a top surface of a heat mass via a thermal conductive adhesive. At the same time as that heat dissipation is improved by the thermal conductive adhesive, a load caused by vibration is reduced because the circuit board is fixed at a position near the connection terminal to the controller housing.

主权项

1. An electronic circuit unit comprising:
a controller housing made of metal; a circuit board that has heat generating components mounted thereon and is accommodated in the controller housing; and a connection terminal that extends from outside of the controller housing and penetrates the controller housing, a tip of the connection terminal being connected to the circuit board, wherein the heat generating components are arranged in an area of the circuit board, the area being adjacent to the connection terminal, and wherein the area of the circuit board is joined to a bottom surface of the controller housing via a thermal conductive adhesive.