公开(公告)号：US11199474B2

公开(公告)日：2021-12-14

申请号：US16362851

申请日：2019-03-25

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Keiichi Nodo ,  Keiichi Noda ,  Ryuta Fukano ,  Yasuhiro Ishiguro ,  Shoji Akatsuka

IPC: G01M15/10

Abstract: Disclosed is a sensor, including: a sensor body having a cylindrical case and a sensor element accommodated in the case; a seal member disposed in a rear end part of the case; lead wires electrically connected to the sensor element and extending from inside to outside of the casing through the seal member; and a cylindrical heat shield tube retained to an outer surface of the case and extending rearward from the case so as to circumferentially surround the seal member and parts of the lead wires, characterized in that: the sensor further includes a cylindrical tube cap made of an elastic material and arranged to restrict a rearward movement of the heat shield tube; the tube cap has formed therein at least one lead wire insertion hole through which the lead wires are inserted; and the tube cap is reduced in diameter and held to the lead wires.