Insulation bushing assembly for an exhaust gas sensor
AssigneeRobert Bosch GmbH
InventorsNorman Hahn, Grady Prewitt, Craig Magera
Life of this patent
Estimating the term…
Abstract
An insulation bushing assembly for use with an exhaust gas sensor. The insulation bushing assembly includes an insulation bushing having a passageway defining a surface, and a contact plate assembly having a contact plate coupled with the insulation bushing. A resilient member extends from the contact plate and into the passageway. The resilient member is engageable with the surface of the passageway such that the member is deflected by the surface from an undeflected position with respect to the contact plate to a deflected position with respect to the contact plate to retain the contact plate assembly in engagement with the bushing.
Claims31
An insulation bushing assembly for use with an exhaust gas sensor, the insulation bushing assembly comprising:
- an insulation bushing including a passageway defining a surface;
- and
- a contact plate assembly having
- a contact plate coupled with the insulation bushing, the contact plate having a substantially planar surface engageable with one of an exhaust electrode and a reference electrode in the exhaust gas sensor;
- and
- a resilient member extending from the contact plate for insertion into the passageway, the resilient member engageable with the surface of the passageway during insertion such that the member is deflected by the surface from an undeflected position with respect to the contact plate to a deflected position with respect to the contact plate.
An exhaust gas sensor comprising:
- a sensor housing;
- a sensor element at least partially enclosed within the housing, the sensor element including at least one of an exhaust electrode and a reference electrode;
- an insulation bushing at least partially supported within the housing, the insulation bushing including a passageway defining a surface;
- and
- a contact plate assembly having
- a contact plate coupled with the insulation bushing and having a substantially planar surface engaged with one of the exhaust electrode and the reference electrode;
- and
- a resilient member extending from the contact plate for insertion into the passageway, the resilient member engageable with the surface of the passageway during insertion such that the member is deflected by the surface from an undeflected position with respect to the contact plate to a deflected position with respect to the contact plate.
A method of assembling an exhaust gas sensor, the method comprising:
- providing an insulation bushing including a passageway defining a surface;
- providing a contact plate assembly including a contact plate and a resilient member extending from the contact plate;
- inserting the resilient member into the passageway;
- engaging the resilient member with the surface;
- deflecting the resilient member from an undeflected position with respect to the contact plate to a deflected position with respect to the contact plate;
- and
- engaging a substantially planar surface of the contact plate with one of an exhaust electrode and a reference electrode of the exhaust gas sensor.
Dependencies are inferred from the claim text.