Abstract: Inside an outer electrode 52 formed tubularly by a flexible conductor, an inner electrode 53 formed linearly by a flexible conductor is disposed. Between the outer electrode 52 and the inner electrode 53, three spacer members 54 formed helically by an insulator are disposed, and by these spacer members 54 a gap is formed between the outer electrode 52 and the inner electrode 53. An inner lead wire 55 is disposed in an axis of the inner electrode 53 electrically connected to the inner electrode 53, and a helical outer lead wire 56 is disposed inside the outer electrode 52 taking an opposite position from the corresponding spacer member 54 with respect to the inner lead wire 55 and electrically connected to the outer electrode 52. By such a construction, a degree of freedom of bend is enhanced, and directional difference of the detection sensitivity is eliminated.

Abstract: A structure for installing a capacitance sensor which detects an object in vicinity of the capacitance sensor to a door of a vehicle, including a spacer disposed between the door and the capacitance sensor attached at a vehicle-inner side of an opening end of the door. A water-drop prevention portion is formed on an outer surface of the spacer for preventing water from flowing to the capacitance sensor from the door.