Weather strip

Abstract

A weather strip 4 has been equipped with: a trim portion 5 which is mounted on a flange portion 23 provided along a circumference portion of a door opening corresponding to a door 2 ; and a seal portion 6 having a hallow portion 6 a , which is projected from the trim portion 5 to an outer side of a vehicle. The seal portion 6 has been provided with a thicker-thickness portion 41 at a portion which abuts against a peripheral portion of the door 2 when the door 2 is closed. Furthermore, each of a door opening inner circumferential-sided portion and a door opening outer circumferential-sided portion within the seal portion 2 , which are located adjacent to the thicker-thickness portion 41 , has been constructed as a thinner-thickness portion 42 which is made thinner than the thicker-thickness portion 41 . Also, a bridge 34 has been provided on an inner side of the seal portion 6 , while the bridge 34 couples the door opening outer circumferential-sided portion within the seal portion 6 to a vehicle outer-sided side wall portion 12 rather than the thinner-thickness portion 42 provided on the door opening outer circumferential side.

1 . A weather strip, comprising:
 a trim portion, that has a substantially U-shaped form of a sectional plane thereof, that is mounted on a flange portion provided along a door opening circumference portion of a vehicle, and that is equipped with a vehicle outer-sided side wall portion, a vehicle inner-sided side wall portion, and a coupling portion for coupling both the side wall portions to each other; and   a seal portion having a hollow portion; in which the seal portion is contacted to the circumferential portion of the door under pressure when the door is closed;   wherein the seal portion comprises:
 a first elongated portion which is elongated to a vehicle outer side from a portion located in the vicinity of a boundary portion between the seal portion and the coupling portion of the vehicle outer-sided side wall portion; 
 a second elongated portion which is elongated to the vehicle outer side from a portion located in the vicinity of a tip portion of the vehicle outer-sided side wall portion; and 
 an expanded portion having a substantially arc shape of a sectional plane thereof, which constitutes a convex on the vehicle outer side and couples a tip portion of the first elongated portion to a tip portion of the second elongated portion; 
   both the first and second elongated portions are constructed of a solid material, and the expanded portion is constructed of a sponge material; and wherein:   the weather strip further comprises:
 a bridge for coupling the expanded portion to a portion located in the vicinity of a boundary portion between the bridge and the first extended portion of the vehicle outer-sided side wall portion within the hollow portion, and for dividing the hollow portion into a first hollow portion on the inner circumferential side of the door opening, and a second hollow portion on the outer circumferential side of the door opening. 
   
   
   
       2 . A weather strip comprising:
 a trim portion that has a substantially U-shaped form of a sectional plane thereof, that is mounted on a flange portion provided along a door opening circumference portion of a vehicle, and that is equipped with a vehicle outer-sided side wall portion, a vehicle inner-sided side wall portion, and a coupling portion for coupling both the side wall portions to each other; and   a seal portion having a hollow portion; in which the seal portion is contacted to the circumferential portion of the door under pressure when the door is closed;   wherein the seal portion comprises:
 a thicker-thickness portion at a predetermined portion thereof which abuts against the circumferential portion of the door when the door is closed, in which each of portions of the seal portion on the inner circumferential side of the door opening and on the outer circumferential side of the door opening, which are located adjacent to the thicker-thickness portion, is constructed as a thinner-thickness portion which is thinner than the thicker-thickness portion; and 
   wherein the weather strip further comprises:
 a bridge for coupling the portion of the seal portion on the outer circumferential side of the door opening to the vehicle outer-sided side wall portion rather than the thinner-thickness portion of the outer circumferential side of the door opening within the hollow portion. 
   
   
   
       3 . A weather strip comprising:
 a trim portion that has a substantially U-shaped form of a sectional plane thereof, that is mounted on a flange portion provided along a door opening circumference portion of a vehicle, and which is equipped with a vehicle outer-sided side wall portion, a vehicle inner-sided side wall portion, and a coupling portion for coupling both the side wall portions to each other; and   a seal portion having a hollow portion; in which the seal portion is contacted to the circumferential portion of the door under pressure when the door is closed;   wherein the seal portion comprises:
 a first elongated portion which is elongated to a vehicle outer side from a portion located in the vicinity of a boundary portion between the seal portion and the coupling portion of the vehicle outer-sided side wall portion; 
 a second elongated portion which is elongated to the vehicle outer side from a portion located in the vicinity of a tip portion of the vehicle outer-sided side wall portion; and 
 an expanded portion having a substantially arc shape of a sectional plane thereof, which constitutes a convex on the vehicle outer side and couples a tip portion of the first elongated portion to a tip portion of the second elongated portion; 
   both the first and second elongated portions are constructed of a solid material, and the expanded portion is constructed of a sponge material; and wherein:   the expanded portion is comprised of: a thicker-thickness portion at a predetermined portion thereof which abuts against the circumferential portion of the door when the door is closed, in which each of portions of the expanded portion on the inner circumferential side of the door opening and on the outer circumferential side of the door opening, which are located adjacent to the thicker-thickness portion, is constructed as a thinner-thickness portion which is thinner than the thicker-thickness portion; and   the weather strip further comprises:
 a bridge for coupling a portion of the expanded portion, which is located on the side of the second elongated portion rather than the thinner-thickness portion on the outer circumferential side of the door opening to another portion thereof located in the vicinity of a boundary portion between the expanded portion and the first elongated portion of the vehicle outer-sided side wall portion within the hollow portion. 
   
   
   
       4 . A weather strip comprising:
 a trim portion that has a substantially U-shaped form of a sectional plane thereof, that is mounted on a flange portion provided along a door opening circumference portion of a vehicle, and that is equipped with a vehicle outer-sided side wall portion, a vehicle inner-sided side wall portion, and a coupling portion for coupling both the side wall portions to each other; and   a seal portion having a hollow portion; in which the seal portion is contacted to the circumferential portion of the door under pressure when the door is closed;   wherein the seal portion comprises:
 a first elongated portion which is elongated to a vehicle outer side from a portion located in the vicinity of a boundary portion between the seal portion and the coupling portion of the vehicle outer-sided side wall portion; 
 a second elongated portion which is elongated to the vehicle outer side from a portion located in the vicinity of a tip portion of the vehicle outer-sided side wall portion; and 
 an expanded portion having a substantially arc shape of a sectional plane thereof, which constitutes a convex on the vehicle outer side and couples a tip portion of the first elongated portion to a tip portion of the second elongated portion; 
   both the first and second elongated portions are constructed of a solid material, and the expanded portion is constructed of a sponge material; and   wherein the weather strip further comprises:
 a bridge for coupling the expanded portion to a portion located in the vicinity of a boundary portion between the bridge and the first extended portion of the vehicle outer-sided side wall portion within the hollow portion, and for dividing the hollow portion into a first hollow portion on the inner circumferential side of the door opening, and a second hollow portion on the outer circumferential side of the door opening; 
 a portion within the expanded portion, which forms the first hollow portion, abuts against the circumferential portion of the door and then is depressed to the vehicle inner side when the door is closed; and 
   wherein the expanded portion comprises:
 a thicker-thickness portion at a predetermined portion of the expanded portion containing a portion which firstly abuts against the circumferential portion of the door when the door is closed; and 
 a thinner-thickness portion thinner than the thicker-thickness portion at each of portions between the thicker-thickness portion and a communicated contact portion with respect to the bridge, and between the thicker-thickness portion and a tip portion of the first elongated portion. 
   
   
   
       5 . The weather strip as claimed in  claim 1 , wherein:
 a position of the communicated contact portion of the bridge with respect to the expanded portion is set within such a range that a value is larger than, or equal to 0.20, and also, is smaller than, or equal to 0.35, and the value is calculated by dividing a circumferential length of the expanded portion from a tip portion of the second elongated portion up to the communicated contact portion by another circumferential length of the expanded portion from a tip portion of the second elongated portion up to a tip portion of the first elongated portion.   
   
   
       6 . The weather strip as claimed in  claim 2 , wherein the thickness of the thicker-thickness portion is 1.1 times larger than, or equal to, and 1.4 times smaller than, or equal to the thickness of the thinner-thickness portion. 
   
   
       7 . The weather strip as claimed in  claim 3 , wherein:
 a position of the communicated contact portion of the bridge with respect to the expanded portion is set within such a range that a value is larger than, or equal to 0.20, and also, is smaller than, or equal to 0.35, and the value is calculated by dividing a circumferential length of the expanded portion from a tip portion of the second elongated portion up to the communicated contact portion by another circumferential length of the expanded portion from the tip portion of the second elongated portion up to a tip portion of the first elongated portion; and wherein:   the thickness of the thicker-thickness portion is 1.1 times larger than, or equal to, and 1.4 times smaller than, or equal to the thickness of the thinner-thickness portion.   
   
   
       8 . The weather strip as claimed in  claim 1 , wherein the bridge is constructed of a sponge material. 
   
   
       9 . The weather strip as claimed in  claim 1 , wherein:
 a large curvature portion is provided within the expanded portion, the curvature of which becomes a maximum curvature value at an outer circumferential-sided forming portion which corresponds to a portion on the outer circumferential-side of the door opening rather than the communicated contact portion with respect to the bridge; and the outer circumferential-sided forming portion is expanded to the outer circumferential side of the hollow portion.   
   
   
       10 . The weather strip as claimed in  claim 9 , wherein:
 the seal portion is comprised of: a first elongated portion which is elongated to a vehicle outer side from a portion located in the vicinity of a boundary portion between the seal portion and the coupling portion of the vehicle outer-sided side wall portion; a second elongated portion which is elongated to the vehicle outer side from a portion located in the vicinity of a tip portion of the vehicle outer-sided side wall portion; and an expanded portion having a substantially arc shape of a sectional plane thereof, which constitutes a convex on the vehicle outer side and couples a tip portion of the first elongated portion to a tip portion of the second elongated portion; and wherein:   a position of the large curvature portion is set within such a range that a value is larger than, or equal to 0.60, and also, is smaller than, or equal to 0.85, and the value is calculated by dividing a circumferential length of the expanded portion from the tip portion of the second elongated portion up to the large curvature portion by another circumferential length of the expanded portion from the tip portion of the second elongated portion up to the communicated contact portion with respect to the bridge.   
   
   
       11 . The weather strip as claimed in  claim 9 , wherein:
 the seal portion is comprised of: a first elongated portion which is elongated to a vehicle outer side from a portion located in the vicinity of a boundary portion between the seal portion and the coupling portion of the vehicle outer-sided side wall portion; a second elongated portion which is elongated to the vehicle outer side from a portion located in the vicinity of a tip portion of the vehicle outer-sided side wall portion; and an expanded portion having a substantially arc shape of a sectional plane thereof, which constitutes a convex on the vehicle outer side and couples a tip portion of the first elongated portion to a tip portion of the second elongated portion; and wherein:   a portion of an inner side plane of the outer circumferential-sided forming portion is located on an outer circumferential side of the hollow portion rather than a line segment; and the line segment connects a center position along a thickness direction within the outer circumferential-sided forming portion at the communicated contact portion with respect to the bridge to another center position along the thickness direction in a boundary portion between the tip portion of the second elongated portion and the outer circumferential-sided forming portion.   
   
   
       12 . The weather strip as claimed in  claim 9 , wherein:
 the large curvature portion is located on the inner circumferential side of the door opening rather than an edge portion within the expanded portion, which is located on the outermost circumferential side of the door opening, and also is located on the vehicle inner side rather than an edge portion of the expanded portion, which is located on the outermost side of the vehicle.   
   
   
       13 . The weather strip as claimed in  claim 1 , wherein:
 in the bridge, the communicated contact portion thereof with respect to the expanded portion is located on the outer circumferential side of the door opening rather than the communicated contact portion thereof with respect to the vehicle outer-sided side wall portion.   
   
   
       14 . The weather strip as claimed in  claim 3 , wherein:
 a position of the communicated contact portion of the bridge with respect to the expanded portion is set within such a range that a value is larger than, or equal to 0.20, and also, is smaller than, or equal to 0.35, and the value is calculated by dividing a circumferential length of the expanded portion from a tip portion of the second elongated portion up to the communicated contact portion by another circumferential length of the expanded portion from a tip portion of the second elongated portion up to a tip portion of the first elongated portion.   
   
   
       15 . The weather strip as claimed in  claim 4 , wherein:
 a position of the communicated contact portion of the bridge with respect to the expanded portion is set within such a range that a value is larger than, or equal to 0.20, and also, is smaller than, or equal to 0.35, and the value is calculated by dividing a circumferential length of the expanded portion from a tip portion of the second elongated portion up to the communicated contact portion by another circumferential length of the expanded portion from a tip portion of the second elongated portion up to a tip portion of the first elongated portion.   
   
   
       16 . The weather strip as claimed in  claim 3 , wherein the thickness of the thicker-thickness portion is 1.1 times larger than, or equal to, and 1.4 times smaller than, or equal to the thickness of the thinner-thickness portion. 
   
   
       17 . The weather strip as claimed in  claim 4 , wherein the thickness of the thicker-thickness portion is 1.1 times larger than, or equal to, and 1.4 times smaller than, or equal to the thickness of the thinner-thickness portion. 
   
   
       18 . The weather strip as claimed in  claim 4 , wherein:
 a position of the communicated contact portion of the bridge with respect to the expanded portion is set within such a range that a value is larger than, or equal to 0.20, and also, is smaller than, or equal to 0.35, and the value is calculated by dividing a circumferential length of the expanded portion from a tip portion of the second elongated portion up to the communicated contact portion by another circumferential length of the expanded portion from the tip portion of the second elongated portion up to a tip portion of the first elongated portion; and wherein:   the thickness of the thicker-thickness portion is 1.1 times larger than, or equal to, and 1.4 times smaller than, or equal to the thickness of the thinner-thickness portion.   
   
   
       19 . The weather strip as claimed in  claim 2 , wherein the bridge is constructed of a sponge material. 
   
   
       20 . The weather strip as claimed in  claim 3 , wherein the bridge is constructed of a sponge material.