Automobile body side wall is strengthened and protection structure

The utility model discloses an automobile body side wall is strengthened and protection structure, including threshold planking, threshold planking mid-mounting B post reinforcing plate, both ends are connected with A post reinforcing plate, back wheel casing respectively about the threshold planking, wherein upper segment A post reinforcing plate is fixed with B post reinforcing plate left end facial features, two sections C post reinforcing plates that link connect gradually between back wheel casing and the B post reinforcing plate right-hand member face, the threshold planking, a post reinforcing plate, the through-hole was separated by B post reinforcing plate in the middle part of C post reinforcing plate and back wheel casing enclosed and circularize just, threshold planking up end, the terminal up end of B post reinforcing plate is equipped with the stiffener, a post reinforcing plate and the threshold planking position that meets is fixed in respectively at both ends about the stiffener, the back wheel casing AND gate threshold planking position that meets, the middle part cladding of stiffener has center support, the last lower extreme of center support is fixed in B post reinforcing plate respectively, on the threshold planking. The utility model discloses equitable structural configuration, the security performance is bumped to effectual automobile body the stiffness and the automobile body side that has improved