Patent ID: 7399925
Filing Date: 2008-07-15
Classification: G01N,H01R

Abstract:
1. A gas sensor having a length with a top end and a base end opposite the top end, comprising: a sensor element having a length with a top end and a base end opposite the top end, said sensor element being responsive to a gas to output a signal as a function of a concentration of the gas; a housing having a top end and a base end opposite the top end, said housing retaining said sensor element therewithin; a hollow porcelain insulator having a top end and a base end opposite the top end, said porcelain insulator being disposed on a side of the base end of said housing to cover the base end of said sensor element, said porcelain insulator having a protrusion formed on the top end thereof and a stopper formed therein; a contact member disposed inside said porcelain insulator in electrical contact with a terminal of said sensor element, said contact member having a stopper which is placed in engagement with the stopper of said porcelain insulator for stopping said contact member from moving outside said porcelain insulator; a holder having a top end and a base end opposite the top end, said holder grasping an outer surface of said porcelain insulator in engagement of the top end thereof with the protrusion of said porcelain insulator; a cover disposed on the side of the base end of said housing in connection with the housing to cover said porcelain insulator, said cover having an inner stopper formed on an inner wall thereof; and a holder stopper formed on said holder which is designed to abut the inner stopper of said cover to stop said holder from moving to the base end of the gas sensor to hold said porcelain insulator from moving to the base end of the gas sensor through the engagement of the top end of said holder with the protrusion of said porcelain insulator.