Seal structure for automobile doors

A seal structure for sealing windows of automobile doors which are raised to a closed position and lowered to an open position, comprising:

• a door flange clamping portion for mounting said seal structure on a door frame;
• a glass seal portion for stopping the gap between said door frame and a window glass when the window glass is raised to its closed position;
• and
• a drip seal;
• said door flange clamping portion, said glass seal portion and said drip seal portion being produced by integral extrusion;
• a support strip integrally buried in said door flange clamping portion and in a back surface of said glass seal portion;
• said glass seal portion including a sliding seal portion which comes into sliding contact with an inner wall surface of said window glass, and a glass sealing lip having a tip contacting an outside surface of said window glass when said window glass is in its closed position;
• said sliding seal portion being formed into a hollow shape except for a solid, enlarged, and bulbous hoodmolding portion provided at a free end thereof, said hollow shape comprising first and second flexible walls converging toward said hoodmolding portion from a third wall;
• wherein said glass seal portion is provided with a projection facing said hoodmolding portion so as to press said first and second flexible walls together between the inner wall surface of the window glass and said projection when the window glass is raised to its closed position, thereby greatly reducing the volume of said sliding seal portion in comparison with the volume of said sliding seal portion when said window is in its open position.