Patent ID: 7237948

Claim:
A thermal sensor housing mechanism including (i) a housing bushing including a cylindrical wall, the cylindrical wall having a first end and a second end, wherein the first end is opposite to the second end, and the first end extends in a direction that is perpendicular to a coolant passage, and (ii) a thermal sensor coaxially attached within the housing bushing the thermal sensor housing mechanism comprising: a pin that is provided in the thermal sensor; an opening member that is provided in the housing bushing for locking the pin; two slits provided in the housing bushing, wherein the two slits extend in an axial direction of the cylindrical wall and reach the second end of the cylindrical wall; a wall portion, which is part of the cylindrical wall that includes the opening member, wherein the wall portion is located between the slits and is deformable such that the wall portion is movable radially inward and outward, wherein the pin is locked in the opening member by shifting the wall portion along with the opening member by means of the slits when the thermal sensor is fitted into the housing bushing; a rib that is provided in the thermal sensor; and a rib groove member that is provided, parallel with the axis of the cylindrical wall, in an internal surface of the cylindrical wall of the housing bushing for receiving the rib, wherein the rib groove member is asymmetric with respect to the axis of the cylindrical wall so that the thermal sensor is fixed at a given position with respect to the housing bushing.