Air filter upper shell structure for improving die precision

Abstract

The utility model provides a kind of air filter upper shell structure of improving ejection precision, including upper shell, the integrated setting of gas pipe is in the lateral wall of upper shell, the inner surface of upper shell top wall is divided into white space and stiffened area, white space is located at the inner end port of gas pipe, white space is plane, the axial direction of gas pipe is parallelly arranged with white space;Uniformly set with boss on the outer surface of upper shell top wall and the position corresponding with white space and stiffened area is integrally arranged, recess is formed in the position corresponding boss in stiffened area, and stiffening rib is distributed in stiffened area;By setting boss and white space on the position of the inner end port of gas pipe on upper shell top wall, cooperate by thickening portion at boss and relatively thin area outside boss, so that the modal of upper shell top wall, avoid shrinkage in the inner end top wall of white space, and ensure the normal mold opening of inner end port of gas pipe.

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