| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas sensor for preventing abrasion of an electrode pad. <P>SOLUTION: The gas sensor 1 includes a sensor element 2 for detecting specific gas concentration in gas to be measured, a heater 3 for heating the sensor element 2, the heater having a roughly cylindrical shape, a housing 4 into which the sensor element 2 is inserted to be held therein, and a terminal unit 5 disposed so as to cover a rear end portion 30 of the heater 3 on a rear end side of the housing 4. The terminal unit 5 includes a pair of insulators 51, a pair of metal terminals 52 each of which is located on the inside surface 510 of a corresponding one of the insulators 51 and in contact with a corresponding one of a pair of electrode pads 300 provided on a surface of the rear end portion 30 of the heater 3, and a pressing member 53 pressing the pair of the insulators 51 in a direction that the insulators approach each other. The pair of the insulators 51 are located out of contact with each other. The rear end portion 30 of the heater 30 is contact-supported at least at three contact points by the terminal unit 51. <P>COPYRIGHT: (C)2009,JPO&INPIT |
