COVER FASTENING STRUCTURE

摘要

PURPOSE:To permit the dimension error between a cover and a body on preparation to be absorbed by constituting a cover fastening structure installed in the lower part of a main frame body from a tapped seat having a large hole on the back side of the cover fastening structure and a stopper engaged with said large hole. CONSTITUTION:A bolt 9 is fastened and fixed from the inside of a cover 2 by a stopper 11 having a tapped hole in a special shape so as not to be dropped-off from the cover 2. Since the shape of the stopper 11 is formed so that the cover 2 is engaged with the upper-part engaging metal fitting of a main frame and the bolt 9 is set into a tapped seat 10, drawing a circle, the back side of the tapped seat is formed to a hole having a proper dimension. Further, the edge surface on the side where the stopper 11 is set into the hole is cut into tapered form so as to be properly fitted into the hole of the tapped seat 10. Since only the top edge part of the bolt 9 is screw-cut, the falling-off of the bolt 9 is prevented by.