VEHICLE GAS SENSOR STRUCTURE PREVENTING DEFORMATION FROM HEAT

摘要

The present invention relates to a vehicle gas sensor structure for preventing thermal deformation of a grommet, comprising: an internal detection unit inserted into an exhaust pipe to sense an oxygen concentration of an exhaust gas moving through the exhaust pipe; a coupling unit installed above the internal detection unit to fixate the internal detection unit inside the exhaust pipe, and coupled to the exhaust pipe; a tubular sleeve formed above the coupling unit, having an external detection unit detecting an oxygen concentration in the air, and having a sensor element therein; a grommet coupled to an upper opening of the sleeve; a plurality of lead lines connected to the sensor element through the grommet and transmitting information regarding an oxygen concentration in an exhaust gas and information regarding an oxygen concentration in the air; and a heat blocking member installed below the grommet within the sleeve to block radiant heat transmitted from the exhaust pipe to the interior of the sleeve, whereby thermal deformation of the grommet due to radiant heat can be prevented.