Weather strip

Abstract

An extrusion-molded portion in the upper side portion of a weather strip is provided with a main seal member, a sub-seal member and a coupling portion. The main seal member has a first fitting base portion in the form of a substantially flat plate fitted to the first retainer of a door frame, and a hollow seal portion formed integrally with the first fitting base portion. The sub-seal member has a second fitting base portion in the form of a substantially flat plate fitted to a second retainer, and a seal lip. The seal lip, the coupling portion and the hollow seal portion are consecutively formed by monolithic molding with EPDM sponge rubber. The greater part of the second fitting base portion and the central part of the first fitting base portion are formed of EPDM solid rubber. Therefore, the difference in expansion rate hardly occurs and a warp is restrained from being generated.

1 . A weather strip comprising: 
 a first seal member having a first fitting base portion and a main seal portion formed integrally with the first fitting base portion,    a second seal member having a second fitting base portion and a sub-seal portion formed integrally with the second fitting base portion,    a coupling portion for coupling the first seal member and the second seal member,    wherein most of or all of the second fitting base portion is formed of solid material or fine foaming material; and the main seal portion and the sub-seal portion are formed of foaming material, and    at least a part of the first fitting base portion is formed of the solid material or the fine foaming material.    
   
   
       2 . A weather strip according to  claim 1 , wherein the first fitting base portion is provided in a form of a substantially flat plate and the main seal portion is constituted by a hollow seal portion formed integrally with the first fitting base portion, and 
 the second fitting base portion is provided in the form of a substantially flat plate and the sub-seal portion is constituted by a seal lip formed integrally with the second fitting base portion.    
   
   
       3 . A weather strip according to  claim 1 , wherein a part of the first fitting base portion which is not directly related to installation or sealing out of the first fitting base portion is formed of the solid material or the fine foaming material.  
   
   
       4 . A weather strip according to  claim 1 , wherein a rate of a cross section of the portion formed of the solid material or the fine foaming material out of the second fitting base portion to a cross section of the portion formed of the solid material or the fine foaming material out of the first fitting base portion is not less than one third and not larger than one.  
   
   
       5 . A weather strip according to  claim 1 , wherein at least both sides of the first fitting base portion are latched to fitting means so as to be fixedly installed; and at least the one side thereof is formed of the foaming material.  
   
   
       6 . A weather strip according to  claim 1 , wherein a surface region visually confirmable from the outside in an installed condition is formed of the foaming material.  
   
   
       7 . A weather strip according to  claim 1 , wherein the coupling portion is formed of the foaming material.  
   
   
       8 . A weather strip according to  claim 1 , wherein the first fitting base portion is latched by a clip and a part unaffected by incorporating the clip is formed of the solid material or the fine foaming material.