JP2014196054A - Opening trim weather strip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening trim weather strip for automobile in which deformation of a hollow seal part can be prevented even in a corner part.SOLUTION: An opening trim weather strip 10 has a mounting base part 20 and a hollow seal part 30. The hollow seal part 30 is formed of a hollow seal tip side proximal end part 31, hollow seal bottom wall side proximal end part 32 and a hollow seal circular arc part 33. A connection portion between a tip portion of a vehicle outer sidewall 21 and the hollow seal tip side proximal end part 31 is connected by a vehicle outer sidewall tip connection surface 21b and a hollow seal tip side proximal end connection surface 31b. In the vehicle outer sidewall tip connection surface 21b and the hollow seal tip side proximal end connection surface 31b, an outer surface side of the hollow seal part 30 is formed higher from the vehicle outer sidewall 21, an inner surface side of the hollow seal part 30 is formed by a low slope in the direction of the vehicle outer sidewall 21, and the inner side of the hollow seal part 30 is formed such that the hollow seal tip side proximal end part 31 is extended in the direction of the vehicle outer sidewall 21.

Description

The present invention relates to an opening trim weather strip for automobiles that seals between an automobile door and a vehicle body opening periphery.

  Conventionally, the seal between the door of the automobile and the periphery of the vehicle body opening is formed between a glass run (not shown) attached to a channel (not shown) on the inner periphery of the door frame 2 of the door and the periphery of the vehicle body opening 6. An opening weather strip (not shown) attached in the vicinity of the opening and an opening trim weather strip 110 (to be described later) attached to the flange 7 at the periphery 6 of the vehicle body opening are formed.

  As shown in FIGS. 3 and 4, the opening trim weather strip 110 is formed by one extrusion molding, connected in an annular shape by a connection portion 111, and attached to almost the entire periphery of the vehicle body opening periphery 6 of the vehicle body. When the door is closed, the door frame 2 or the door panel is brought into contact with the outer periphery and sealed. As shown in FIG. 5, a flange 7 is provided at the periphery 6 of the vehicle body opening, and an opening trim weather strip 110 is attached to the flange 7. The flange 7 has the inner panel and the outer panel at their tips fixed by welding. Is formed.

  As shown in FIG. 5, the opening trim weather strip 110 has a hollow seal portion 130 and a mounting base portion (trim portion) 120 having a substantially U-shaped cross section, and is attached to the flange 7 by the mounting base portion (trim portion) 120. It is done. The trim portion 120 is formed in a substantially U-shaped cross section formed from the vehicle outer side wall 121, the vehicle inner side wall 122, and the bottom wall 123 (see, for example, Patent Document 1).

  As shown in FIG. 6, an outer side holding lip 124 and an inner side holding lip 125 are formed on the inner surfaces of the outer side wall 121 and the inner side wall 122 of the substantially U-shaped cross section in order to grip the flange 7. ing. When the flange 7 is inserted into the trim portion 120, the leading ends of the vehicle outer side holding lip 124 and the vehicle inner side holding lip 125 are bent and pressed against the respective side surfaces of the flange 7 to hold the flange 7. 110 can be installed.

  The hollow seal portion 130 forms a hollow seal distal end side root portion 131 having one tip connected to the tip of the vehicle outer side wall 121, and the other tip is a portion continuous with the bottom wall 123 of the vehicle outer side wall 121. A hollow seal bottom wall side root portion 132 connected to the vicinity is formed, and an arcuate hollow seal arc portion 133 connecting the hollow seal bottom wall side root portion 132 and the hollow seal tip side root portion 131 is formed.

  When the opening trim weather strip 110 is attached to the corner portion of the flange, the hollow seal tip side base portion 131 is formed so as to increase the rigidity of the hollow seal tip side root portion 131 so that the hollow seal portion 130 is not deformed. A front end of the vehicle outer side wall 121 is formed to be connected to a vehicle outer side wall front end protruding portion 122a protruding to the vehicle outer side.

  As shown in FIG. 5, the vehicle outer side wall tip overhanging portion 122 a is formed in a trapezoidal cross section, and on the inner surface side of the hollow seal portion 130, the hollow seal tip side root portion 131 and the vehicle outer side wall tip overhanging portion are formed. The connecting surface 122a is formed in parallel with the vehicle outer side wall 121 and is in contact with the inner surface at a substantially right angle.

  However, in this case, the shape of the vehicle outer side wall front end protruding portion 122a is large, and the door closing force increases. In order to reduce the door closing force, when changing the wall thickness of the vehicle outer side wall front end protruding portion 122a and the hollow seal front end side root portion 131 of the portion attached to the corner portion of the vehicle body opening peripheral edge 6, It is necessary to change the wall thickness at the same time, which complicates the manufacturing process.

  As shown in FIG. 6, as in FIG. 5, the opening trim weather strip 210 has a hollow seal portion 230 and a mounting base (trim portion) 220 having a substantially U-shaped cross section, and the mounting base (trim portion). 220 is attached to the flange 7 described above. The trim portion 220 is formed in a substantially U-shaped cross section formed from the vehicle outer side wall 221, the vehicle inner side wall 222, and the bottom wall 223 (see, for example, Patent Document 2).

  The hollow seal portion 230 forms a hollow seal distal end side base portion 231 whose one tip is connected to the tip of the vehicle outer side wall 221, and the other tip is a portion that is continuous with the bottom wall 223 of the vehicle outer side wall 221. A hollow seal bottom wall side root portion 232 connected to the vicinity is formed, and an arcuate hollow seal arc portion 233 connecting the hollow seal bottom wall side root portion 232 and the hollow seal tip side root portion 231 is formed.

  When the opening trim weather strip 210 is attached to the corner portion of the flange, the hollow seal portion 230 is not deformed. Therefore, in order to increase the rigidity of the hollow seal distal end portion 231, the hollow seal distal end portion 231 is A front end of the vehicle outer side wall 221 is formed to be connected to a vehicle outer side wall front end protruding portion 222a that protrudes to the vehicle outer side.

As shown in FIG. 6, the vehicle outer side wall front end protruding portion 222 a is formed in a circular arc shape having a cross-sectional convex shape on the outer side of the vehicle, and on the inner surface of the hollow seal portion 230, The connection surface of the outer side wall tip overhanging portion 222a is in contact with a substantially right angle.
For this reason, as in the case of FIG. 5, when changing the thickness of the vehicle outer side wall tip overhanging portion 222a and the hollow seal tip side base portion 231, it is necessary to change both wall thicknesses simultaneously. The process becomes complicated.

JP 2004-237937 A JP 2009-90967 A

  Therefore, an object of the present invention is to provide an automotive opening trim weather strip that is easy to manufacture and can prevent deformation of a hollow seal portion even at a corner portion.

In order to solve the above-mentioned problem, the present invention of claim 1 is an opening trim weather strip that is attached to a flange formed at the periphery of a vehicle body opening of a vehicle and seals between the vehicle door and the periphery of the vehicle body opening.
The opening trim weather strip is provided integrally with the mounting base attached to the flange and the mounting base, and abuts on the outer periphery of the door frame or door panel of the automobile door to seal between the automobile door and the periphery of the vehicle body opening. Having a hollow seal,
The mounting base is formed in a substantially U-shaped cross section composed of a vehicle outer side wall, a vehicle inner side wall, and a bottom wall.
The hollow seal bottom has a hollow seal bottom portion whose one tip is connected to the tip of the side wall of the vehicle outer side wall, and the other tip is connected to the vicinity of a portion continuous with the bottom wall of the side wall of the vehicle outer side. Forming a wall side root portion, formed from an arc-shaped hollow seal arc portion connecting the hollow seal bottom wall side root portion and the hollow seal tip side root portion;
The connecting portion between the front end portion of the vehicle outer side wall and the seal front end side root portion is connected at the front end connecting surface of the vehicle outer side wall and the base end connecting surface of the hollow seal front end side, and the front end connecting surface of the vehicle outer side wall and the end portion of the hollow seal front end side are connected. The surface is formed so that the outer surface side of the hollow seal portion is higher from the vehicle outer side wall, the inner surface side of the hollow seal portion is formed to be inclined lower toward the vehicle outer side wall side, and the base portion of the hollow seal tip side is the direction of the vehicle outer side wall. An opening trim weather strip, characterized in that it is formed to overhang.

  According to the first aspect of the present invention, a mounting base portion that is attached to the flange and a mounting base portion that are integrally provided, abuts against the outer periphery of the door frame or door panel of the automobile door, and seals between the automobile door and the periphery of the vehicle body opening. A hollow seal portion. For this reason, when the attachment base is attached to the flange, the hollow seal portion can come into contact with the outer periphery of the door frame or door panel to seal between the outer periphery of the door frame or door panel and the periphery of the vehicle body opening.

  Since the mounting base is formed in a substantially U-shaped cross section composed of the vehicle outer side wall, the vehicle inner side wall, and the bottom wall, the flange is held inside the mounting base having a substantially U-shaped cross section, and the vehicle outer side wall and the vehicle inner side. The vehicle-side holding lip and the vehicle-side holding lip formed inside the side wall can be firmly held.

  The hollow seal bottom has a hollow seal bottom portion whose one tip is connected to the tip of the side wall of the vehicle outer side wall, and the other tip is connected to the vicinity of a portion continuous with the bottom wall of the side wall of the vehicle outer side. A wall-side root portion is formed, and is formed from an arc-shaped hollow seal arc portion connecting the hollow seal bottom wall-side root portion and the hollow seal tip-end-side root portion. For this reason, when the door is closed, the hollow seal front end base portion and the hollow seal bottom wall side root portion support the hollow shape, and the hollow seal arc portion flexibly contacts the outer periphery of the door frame or door panel. It is possible to seal between the outer periphery of the vehicle and the periphery of the vehicle body opening.

  The connecting portion between the front end portion of the vehicle outer side wall and the front end portion of the hollow seal is connected at the front end connecting surface of the outer side wall and the end connecting portion of the front end of the hollow seal. The connection surface is formed such that the outer surface side of the hollow seal portion is formed higher from the vehicle outer side wall, the inner surface side of the hollow seal portion is formed so as to be inclined downward toward the vehicle outer side wall, Overhanged in the direction.

  For this reason, the vehicle outer side wall tip overhanging portion extends greatly in the direction of the hollow seal portion, so that the hollow seal tip side root portion is formed short and the portion formed of the sponge material is shortened, and the hollow seal is closed when the door is closed. The deformation of the portion is deformed from a higher position away from the vehicle outer side wall as compared with the conventional case. Accordingly, the amount of deformation of the entire hollow seal portion is reduced, and even if the opening trim weather strip is bent and attached to the corner portion, the hollow seal portion becomes difficult to buckle and is reliably sealed.

  According to a second aspect of the present invention, a vehicle outer side wall front end protruding portion is formed on a surface of the front end of the vehicle outer side wall on the hollow seal portion side, and the vehicle outer side wall front end protruding portion and the hollow seal front end side root portion are continuous. The opening trim weather strip is formed as described above and has a vehicle outer side wall front end connecting surface formed at a vehicle outer side wall front end protruding portion.

  In the second aspect of the present invention, the vehicle outer side wall front end protruding portion is formed on the surface of the front end of the vehicle outer side wall on the hollow seal portion side, and the vehicle outer side wall front end protruding portion and the hollow seal front end side root portion are continuous. The vehicle outer side wall tip connecting surface was formed in the vehicle outer side wall tip overhanging portion. For this reason, even when the rigidity of the front end side of the vehicle outer side wall of the hollow seal portion is increased and the opening trim weather strip is attached to the corner portion at the periphery of the vehicle body opening, deformation of the hollow seal portion can be prevented.

  The present invention of claim 3 is the opening trim weather strip in which the hollow seal distal end side root portion is formed thicker at the portion attached to the corner portion of the flange than at the portion other than the corner portion.

  In the present invention of claim 3, the hollow seal front end side base portion is formed thicker at the portion attached to the corner portion of the flange than at the portion other than the corner portion. For this reason, even when the opening trim weather strip is attached to the corner portion of the periphery of the vehicle body opening, the hollow seal portion is not deformed abnormally, and sealing performance can be ensured. In addition, even if the thickness of the hollow seal tip side root portion is changed, the vehicle outer side wall tip connection surface and the hollow seal tip side root portion connection surface only change the die of the hollow seal tip side root portion, Depending on the change in wall thickness, the inner end of the hollow seal portion may extend toward the vehicle outer side wall along the vehicle outer side wall front end connecting surface or move backward in the opposite direction. Further, there is no step on the inner surface of the hollow seal portion, and the thickness of the base portion on the distal end side of the hollow seal can be easily changed.

  According to the fourth aspect of the present invention, the hollow seal front end side root portion is formed on a portion attached to the corner portion of the flange. It is an opening trim weather strip formed in a thick wall.

  In the present invention of claim 4, the hollow seal front end side root portion is formed in a portion that is attached to the corner portion of the flange, and the outer diameter of the hollow seal portion is the same as the other portion, so that Formed thick. For this reason, the space | interval with the door frame which a hollow seal part contact | abuts by the corner part of a vehicle body opening part periphery and parts other than a corner part can be made the same, and a sealing performance can be equalized.

  According to the fifth aspect of the present invention, the vehicle outer side wall tip connecting surface is formed with a curved surface convex in the vehicle outer direction, and the hollow seal tip side root portion connecting surface is formed with a concave curved surface in the vehicle outer direction. Trim weather strip.

  In the present invention of claim 5, the vehicle outer side wall tip connecting surface is formed with a curved surface convex in the vehicle outer direction, and the hollow seal tip side root portion connecting surface is formed with a concave curved surface in the vehicle outer direction. The inner projecting portion of the hollow seal tip side root portion can be tapered, and on the inner surface of the hollow seal portion, the vehicle outer side wall tip connection surface and the hollow seal tip side root portion connection surface can be smooth without a step. Can do.

  The present invention of claim 6 is an opening trim weather strip in which an insert member is embedded in the mounting base.

  In this invention of Claim 6, since the insert member was embed | buried inside the attachment base part, the force holding a flange is strong and it can hold | maintain a hollow seal part in a predetermined position reliably, and can ensure sealing performance.

  According to a seventh aspect of the present invention, the attachment base is an opening trim weather strip formed of synthetic rubber or thermoplastic elastomer having an international rubber hardness (IRHD) of 70 to 90 degrees.

  In the present invention of claim 7, since the mounting base is formed of synthetic rubber or thermoplastic elastomer having an international rubber hardness (IRHD) of 70 to 90 degrees, the mounting base can reliably hold the flange.

  The connecting portion between the front end portion of the vehicle outer side wall and the hollow seal front end side root portion is formed so that the outer surface side of the hollow seal portion is higher than the outer side wall of the vehicle outer side wall end connecting surface and the hollow seal front end side base portion connecting surface. The inner surface side of the part is formed with a low slope toward the vehicle outer side wall, and the inner surface side of the hollow seal part is formed with the root part of the hollow seal tip side projecting toward the side wall of the vehicle outer side, so the thickness of the root part of the hollow seal tip side changes. Even in the case, the vehicle outer side wall tip connection surface and the hollow seal tip side root part connection surface, only by changing the die of the hollow seal tip side root part, there is no step on the inner surface of the hollow seal part, The thickness of the base portion on the distal end side of the hollow seal can be easily changed.

It is sectional drawing of the state which attached the opening trim weather strip which is embodiment of this invention to the corner part of the flange. It is sectional drawing of the state which attached the opening trim weather strip which is embodiment of this invention to the linear part of the flange. It is the perspective view seen from back in the state where the door of the car was opened. It is a front view of the door opening trim weather strip which is an embodiment of the invention. It is sectional drawing in the state which attached the conventional door opening trim weather strip to the opening part periphery of a motor vehicle. It is sectional drawing in the state which attached the other conventional door opening trim weather strip to the opening part periphery of a motor vehicle.

An embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 3, the vehicle body 1 of the automobile has a door opening, and the door opening is opened and closed by a door that is an opening / closing member. The periphery of the door opening forms a vehicle body opening periphery 6, and a flange 7 (FIG. 1, FIG. 2) with the outer panel 9 and the inner panel 8 constituting the vehicle body 1 welded to the vehicle body opening periphery 6. See). In the flange 7, the number of panels to be welded changes from about 2 to about 8 depending on the position of the vehicle body opening peripheral edge 6 of the vehicle body 1.

  The seal between the door and the vehicle body opening peripheral edge 6 is attached to the door channel, and a glass run (not shown) for sealing between the door glass 5 and the inner periphery of the door frame 2 and the vehicle body opening. An opening weather strip (not shown) that seals the opening side of the peripheral edge 6 and an opening trim weather strip 10 that is attached to the flange 7 and seals the vehicle interior side from the opening weather strip.

  The present invention relates to the opening trim weather strip 10. The opening trim weather strip 10 is linearly formed by extrusion. As shown in FIG. 4, the straight opening trim weather strip 10 is attached to the flange 7 so as to form an annular shape along the shape of the periphery 6 of the vehicle body opening. The mounting is performed sequentially from one end of the opening trim weather strip 10 to the flange 7, and when the mounting is completed, the other end is joined to the one end. This terminal may be formed into an annular shape by being joined by the connecting portion 11.

Alternatively, the ends of the opening trim weather strip 10 may be bonded to each other with an adhesive before being attached to form an annular shape.
In the opening trim weather strip 10, a portion attached to the corner portion of the vehicle body opening peripheral edge 6 forms a corner portion 13, and a portion attached to the linear portion forms a straight portion 12.

As shown in FIGS. 1 and 2, the opening trim weather strip 10 is integrally formed from a trim portion (mounting base portion) 20 having a substantially U-shaped cross section, which is attached to the flange 7, and the trim portion 20. 2 has a hollow hollow seal portion 30 that abuts against the door frame bulging portion 2a and seals between the door and the periphery 6 of the vehicle body opening. An embodiment of the present invention will be described by taking an opening trim weather strip 10 abutting against the door frame 2 as an example.
In the present invention, the hollow seal portion 30 is integrally provided on the outer surface of the outer side wall 21 of the trim portion 20. The hollow seal part 30 will be described later.

  The trim portion 20 includes a vehicle outer side wall 21, a vehicle inner side wall 22, and a bottom wall 23, and is formed in a substantially U-shaped cross section. An insert member 27 is embedded in the trim portion 20 in order to increase the strength for gripping the flange 7. The insert member 27 is formed of sheet metal or hard resin, and is formed in a ladder shape, a fish bone shape, a zigzag shape, or the like in order to ensure flexibility when attached to the corner portion of the vehicle body opening peripheral edge 6. The trim portion 20 is formed of a solid material or a fine foam material.

  On the inner surfaces of the vehicle outer side wall 21 and the vehicle inner side wall 22, vehicle outer side holding lips 24, 24, 24 and a vehicle inner side holding lip 25 that extend in the longitudinal direction and sandwich the flange 7 are formed. Therefore, the front ends of the vehicle outer side holding lips 24, 24, 24 and the vehicle inner side holding lip 25 abut against the side surfaces on both sides of the flange 7 to firmly hold the flange 7. For this reason, the trim part 20 does not fall down, and the hollow seal part 30 can contact | abut to the door frame 2 reliably, and can ensure sealing performance.

  The vehicle interior holding lip 25 in the present embodiment is formed long by one. For this reason, even if the wall thickness of the flange 7 is changed by the vehicle inner side holding lip 25, the vehicle inner side holding lip 25 bends and the flange 7 is pressed toward the vehicle outer side wall 21 to stably hold the flange 7. can do. The front end of the vehicle inner side holding lip 25 is bent toward the bottom wall 23 to facilitate holding the flange 7.

  The vehicle outer side holding lips 24, 24, 24 in the present embodiment are formed to be three shorter after extrusion molding, and the vehicle inner side holding lip 25 is formed to protrude in an oblique direction inside a substantially U-shaped cross section with one long side. Has been. For this reason, the flange 7 is positioned on the inner surface side of the vehicle outer side wall 21 and is stably held by the three vehicle outer side holding lips 24, 24, 24. In addition, it can reliably follow the unevenness and bending of the flange 7 and abut against the flange 7 to ensure sealing performance.

The vehicle outer side holding lips 24, 24, 24 in the middle of the three vehicle outer side holding lips 24 can be formed of a sponge material.
A cover lip 28 extends from the continuous portion of the vehicle interior side wall 22 and the bottom wall 23 in the vehicle interior direction and covers the tip of a garnish attached in the vehicle.

In the trim portion 20, the three exterior holding lips 24, 24, 24 are formed of a solid material or a fine foam material except for a portion formed of a sponge material. For this reason, the force which clamps the flange 7 is strong and can hold | maintain the flange 7 stably.
The trim portion 20 is preferably formed of synthetic rubber or thermoplastic elastomer having an international rubber hardness (IRHD) of 70 to 90 degrees. In this case, the rigidity of the trim part 20 is large, and the flange 7 can be reliably held.

Next, the hollow seal part 30 which is a seal part will be described.
A hollow seal portion 30 is integrally formed on the outer surface of the vehicle outer side wall 21 of the trim portion 20. The hollow seal portion 30 has a cross-sectional shape formed in an arc shape and is formed of a sponge material.
A hollow seal skin layer 34 made of a solid material is formed on the surface of the hollow seal portion 30.

  In the cross-sectional shape of the hollow seal portion 30, one end is formed with a hollow seal distal end side base portion 31 that is connected to the distal end of the vehicle outer side wall 21, and the other end is a portion that is continuous with the bottom wall 23 of the vehicle outer side wall 21 A hollow seal bottom wall side root portion 32 connected to the vicinity thereof is formed, and an arcuate hollow seal arc portion 33 connecting the hollow seal bottom wall side root portion 32 and the hollow seal tip side root portion 31 is formed.

  Since the hollow seal portion 30 is formed in an arc shape in cross section, when the door is closed, the hollow seal distal end side base portion 31 and the hollow seal bottom wall side root portion 32 support the hollow shape, and the hollow seal arc portion 33 serves as the door frame 2. Or it can contact | abut to the outer periphery of a door panel flexibly, and can seal between the outer periphery of the door frame 2 or a door panel, and the vehicle body opening part periphery 6. FIG.

  It is preferable to form a vehicle outer side wall tip overhanging portion 21a made of a solid material or a fine foam material on the surface of the vehicle outer side wall 21 on the hollow seal portion 30 side. In this case, the vehicle outer side wall front end protruding portion 21a and the hollow seal front end side base portion 31 are formed to be continuous, and the vehicle outer side wall front end protruding portion 21a is formed with the vehicle outer side wall front end connecting surface 21b. For this reason, even when the rigidity of the front end side of the outer side wall 21 of the hollow seal portion 30 is increased and the opening trim weather strip 10 is attached to the corner portion of the periphery 6 of the vehicle body opening portion, the deformation of the hollow seal portion 30 is prevented. Can be prevented.

  Further, since the vehicle outer side wall tip overhanging portion 21a overhangs in the direction of the hollow seal portion 30, the hollow seal tip side base portion 31 is formed short and the portion formed of the sponge material is shortened, and the door is closed. The deformation of the hollow seal portion 30 is deformed from a high position away from the vehicle outer side wall 21 as compared with the conventional case. Therefore, the amount of deformation of the entire hollow seal portion 30 is reduced, and even if the opening trim weather strip 10 is bent and attached to the corner portion, the hollow seal portion 30 becomes difficult to buckle and is reliably sealed.

  As shown in FIG. 1, the hollow seal front end side base portion 31 is a straight line other than the corner portion 13 at a corner portion 13 (a portion indicated by 13 in FIG. 4) attached to the corner portion of the flange 7 on the periphery 6 of the vehicle body opening. It is formed thicker than the portion 12 (portion shown in FIG. 2). For this reason, even when the opening trim weather strip 10 is attached to the corner portion of the vehicle body opening periphery 6, the hollow seal portion 30 of the corner portion 13 is not deformed abnormally, and the sealing performance can be ensured. FIG. 2 is a cross-sectional view of the opening trim weather strip 10 of the straight portion 12.

  The connecting portion between the front end portion of the vehicle outer side wall 21 and the hollow seal front end side base portion 31 is connected by the vehicle outer side wall front end connection surface 21b and the hollow seal front end side root portion connecting surface 31b. The seal tip side base portion connection surface 31b is formed such that the outer surface side of the hollow seal portion 30 is formed higher from the vehicle outer side wall 21 and the inner surface side of the hollow seal portion 30 is inclined lower toward the vehicle outer side wall 21. The hollow seal front end side root portion 31 projects in the direction of the vehicle outer side wall 21 to form a hollow seal front end side root portion inner overhang portion 31a.

  The hollow seal tip side root portion inner overhang portion 31a is formed along the inner surface side of the vehicle outer side wall tip overhang portion 21a because the corner portion 13 is formed with a thick hollow seal tip side root portion 31a. It extends long in the direction of the vehicle outer side wall 21. In the straight portion 12, the hollow seal tip side root portion 31 is formed thinner than the corner portion 13, so that the hollow seal tip side root portion inner overhang portion 31 a is more than the corner portion 13, as shown in FIG. 2. Although extended shortly, the corner part 13 is extended and formed in the vehicle outer side wall 21 direction so that the thickness of the hollow seal front end side base part 31 increases.

  As described above, when extrusion molding is performed by changing the thickness of the hollow seal tip side base portion 31 to the thickness of the corner portion 13, the outer side wall tip connection surface 21 b and the hollow seal tip side root connection surface 31 b As the thickness of the hollow seal tip side base portion 31 changes, the inner surface side of the hollow seal portion 30 becomes the hollow seal tip side root portion inner overhang portion only by changing the die of the hollow seal tip side root portion 31. 31a extends toward the vehicle outer side wall 21 along the vehicle outer side wall front end connecting surface 21b or retreats in the opposite direction, so that no step is generated on the inner surface of the hollow seal portion 30, and the front end of the hollow seal can be easily formed. The thickness of the side root portion 31 can be changed.

  As described above, since the hollow seal front end side base portion 31 is formed thicker than the straight portion 12 at the corner portion 13, the opening trim weather strip 10 is attached to the corner portion of the vehicle body opening periphery 6. However, the rigidity of the hollow seal portion 30 is improved, and the sealing performance can be ensured without being deformed abnormally such as falling or being crushed.

  The hollow seal tip side root portion 31 is preferably formed so that the thick portion formed at the corner portion 13 has the same outer diameter as that of the other portions and is thick in the inner direction. In this case, the outer diameter with which the hollow seal portion 30 abuts between the corner portion 13 and the straight portion 12 can be made the same, and the sealing performance can be made uniform.

  The vehicle outer side wall front end connection surface 21b is formed with a curved surface convex in the vehicle outer direction (left direction in FIG. 1), and the hollow seal front end side base portion connection surface 31b is formed with a concave curved surface in the vehicle outer direction. It is preferable. In this case, the hollow seal tip side root portion inner overhang portion 31a can be tapered, and on the inner side surface of the hollow seal portion 30, the vehicle outer side wall tip connection surface 21b and the hollow seal tip side root portion connection surface 31b. Can be smooth without steps.

Next, a method for manufacturing the opening trim weather strip 10 will be described.
The opening trim weather strip 10 is formed by extrusion molding, and solid rubber or fine foam material constituting the trim portion 20 and sponge rubber constituting the insert member 27 and the hollow seal portion 30 are integrally extruded by an extruder. be able to. When the corner portion 13 is extruded, the corner portion 13 can be formed simply by sliding the die that forms the hollow seal distal end side base portion 31, and the extrusion is easy.
Thereafter, in the case of rubber, vulcanization is carried out by a normal method, and then cut into a predetermined length for one piece.

2 Door frame 7 Flange 10 Door opening trim weather strip 20 Trim (mounting base)
21 Car outer side wall 21a Car outer side wall tip overhanging part 21b Car outer side wall tip connecting surface 22 Car inner side wall 23 Bottom wall 30 Hollow seal part 31 Hollow seal tip side base part 31a Hollow seal tip side base part inner overhang part 31b Hollow Seal tip side base part connection surface 32 Hollow seal bottom wall side base part 33 Hollow seal arc part

Claims (7)

In the opening trim weather strip that is attached to the flange formed at the periphery of the vehicle body opening of the automobile and seals between the automobile door and the periphery of the vehicle body opening,
The opening trim weatherstrip is attached to the flange, and is provided integrally with the mounting base. The opening trim weatherstrip is in contact with the outer periphery of the door frame or door panel of the automobile door, and the automobile door and the vehicle body opening periphery. Having a hollow seal portion for sealing between
The mounting base is formed in a substantially U-shaped cross section composed of a vehicle outer side wall, a vehicle inner side wall and a bottom wall,
The hollow seal portion forms a hollow seal front end side base portion whose one end is connected to the front end of the vehicle outer side wall, and the other end is connected to the vicinity of a portion of the vehicle outer side wall continuous with the bottom wall. Forming a hollow seal bottom wall side root portion, formed from an arc-shaped hollow seal arc portion connecting the hollow seal bottom wall side root portion and the hollow seal tip side root portion,
A connecting portion between the front end portion of the vehicle outer side wall and the hollow seal front end side base portion is connected by a vehicle outer side wall front end connection surface and a hollow seal front end side base portion connecting surface. The side root portion connecting surface is formed such that the outer surface side of the hollow seal portion is formed higher from the vehicle outer side wall, the inner surface side of the hollow seal portion is formed to be inclined lower toward the vehicle outer side wall, and the inner surface side of the hollow seal portion is An opening trim weather strip, characterized in that a hollow seal front end side root portion is formed to protrude toward the vehicle outer side wall.   A vehicle outer side wall tip overhanging portion is formed on the surface of the vehicle outer side wall tip on the side of the hollow seal portion, and the vehicle outer side wall tip overhanging portion and the hollow seal tip side root portion are formed so as to be continuous. 2. The opening trim weather strip according to claim 1, wherein the vehicle outer side wall front end connecting surface is formed at the vehicle outer side wall front end protruding portion.   The opening trim weather strip according to claim 1 or 2, wherein the hollow seal front end side root portion is formed thicker at a portion attached to the corner portion of the flange than at a portion other than the corner portion.   The hollow seal tip side root portion is formed in a thick portion formed in a portion attached to the corner portion of the flange, and the hollow seal portion has the same outer diameter as the other portion and is formed thick in the inner direction. The opening trim weather strip according to claim 3.   5. The vehicle outer side wall front end connecting surface is formed with a curved surface convex in the vehicle outer direction, and the hollow seal front end side root portion connecting surface is formed with a concave curved surface in the vehicle outer direction. An opening trim weather strip according to any one of the preceding claims.   The opening trim weather strip according to any one of claims 1 to 5, wherein an insert member is embedded in the mounting base. The opening trim weather strip according to any one of claims 1 to 6, wherein the mounting base portion is formed of synthetic rubber or thermoplastic elastomer having an international rubber hardness (IRHD) of 70 to 90 degrees.

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