Vehicle roof antenna mounting assembly

A vehicle roof antenna mounting assembly fixed by inserting a part of the mounting assembly from an outside of a vehicle through a mounting hole formed through a vehicle roof panel so as to catch said vehicle roof panel, said mounting assembly comprising:

• an antenna base disposed on an outside of said vehicle roof panel of said vehicle;
• a convex portion formed on a surface of the vehicle roof panel side of said antenna base, inserted into said mounting hole, and having a surface portion surrounding a first screw and a peripheral portion thereof, said surface portion having an edge portion;
• a tightening member having a second screw screwed with said first screw, and tightened to said convex portion;
• a leg washer having a plate washer ring through which one of said first screw and said second screw is passed, a leg portion extendedly provided from said washer ring toward said mounting hole, and a taper portion provided on said leg portion as opposed to said edge portion of said surface portion, said taper portion being abutted on said edge portion to expand said tip portion toward an outside of said mounting hole in accordance with which said washer ring is come close to said mounting hole by tightening said tightening member.