Patent ID: 7077666

Claim:
An on-vehicle electronic circuit unit comprising: a frame surrounded by four side plates; a circuit board that is provided in the frame and that has a wiring pattern and electronic components mounted thereon; and cables that are connected to the wiring pattern and that are held by cut grooves provided in the side plates of the frame the cut grooves being opposite to each other, the side plates containing the cut grooves being higher than the other side plates, wherein each cut groove extends toward the circuit board and has a hole formed by an opening that extends from one edge of the side plate, each cable includes a core wire, an insulating coating portion for covering the core wire, and an elastic heat shrinkable tube which is attached to a part of an outer circumference of the insulating coating portion, and has an outer diameter larger than that of the insulating coating portion, and the heat shrinkable tube is fitted into the cut groove from an opening side, and is held in the cut groove in a press-fitted state.