Patent ID: 6383353
Filing Date: 2002-05-07
Classification: G01N

Abstract:
An oxygen sensor, comprising an oxygen detection element assuming a form of a hollow rod which is closed at one end, and having an electrode layer formed on at least an inner surface thereof, and a metallic terminal member electrically connected to the electrode layer, the oxygen sensor being characterized in that:the metallic terminal member includes an attachment portion having a substantially circular cross section, which is disposed within a hollow portion of the oxygen detection element; and the attachment portion is disposed such that, as observed in cross section, the attachment portion is in contact with an inner wall surface of the hollow portion of the oxygen detection element at opposite sides thereof located along a predetermined direction of contact, and a gap is formed between the attachment portion and the inner wall surface of the hollow portion of the oxygen detection element at opposite sides thereof located along a direction of gap formation, intersecting the direction of contact.