Steering column dustproof construction

The utility model discloses a steering column dustproof construction, including the dirt proof boot, characterized by: the dirt proof boot includes engine compartment interior dirt proof boot and dirtproof boot for the cockpit: engine compartment interior dirt proof boot has a sealing sleeve who is used for the steering column of cover in engine compartment outside, and sealing sleeve's lower extreme medial surface is used for linking to each other with steering gear input shaft interference fit and realizing sealedly, the dirt proof boot has a cover sheath section of thick bamboo that is used for the cover in cockpit's steering column's outside for the cockpit, still include the dirt proof boot support, the dirt proof boot support includes the fixed buckle that is the back convex that sets up of trailing flank of an annular bearing plate, annular bearing plate, the sealing sleeve's of engine compartment interior dirt proof boot upper end is cup jointed continuously with the edge of the annular bearing plate