JPH10264655A - Weather strip for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve favorable sealability around a door glass, and prevent the outward suction of the door glass in high speed run of an automobile. SOLUTION: A curvature corner part 35 of a hollow weather strip 3 installed on a door aperture edge 1 of a car body is formed thicker than a seal wall 34, notches 352, 353 are respectively formed on an inner surface at both ends connected to a side wall 33 of the corner part 35 and the seal wall 34 to let the seal wall 34 deformed when it is pushed up by a door glass 2, and a notch 354 of a smaller groove width than the notches 352, 353 is formed at a middle position between them, so outward suction of the door glass 2 is prevented by the corner part 35 having a cross sectional surface in a gentle V-form by closing the notch 354 caught between a mould 6 provided on the door aperture edge 1 and the door glass 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weatherstrip for an automobile, and more particularly to a weatherstrip mounted on an edge of a door opening of a vehicle body.

[0002]

2. Description of the Related Art As shown in FIG. 2, a weather strip 3 for sealing between an opening edge 1 and a door glass 2 is attached to an opening edge 1 of a door opening of a vehicle body.

As the weather strip 3, as shown in FIG. 3, a hollow weather strip surrounded by a mounting base 31, an inner side wall 32 and an outer side wall 33, and a seal wall 34 is used. The mounting base 31 is fitted to a retainer 4 provided at the door opening edge 1 so that when the sealing wall 34 closes the door glass 2, it is pushed up by the peripheral edge thereof. The side wall 32 inside the vehicle extends downward, and a seal lip 36 that contacts the inner surface of the door glass 2 when closed and a seal lip 37 that contacts the trim 5 of the door opening edge 1 extend from the tip. . The outer end of the retainer 4 extends downward, turns over, and extends upward to form a molding 6 having a V-shaped cross section, and the inner side thereof is pressed against the outer side wall 33 of the weather strip 3.
The corner portion 35 where the side wall 33 on the outside of the vehicle and the seal wall 34 are connected has a gentle curved shape.
5 has a notch 351 formed on its inner surface to be thin.

[0004] The seal wall 34 is pushed up by the door glass 2 at a position on the vehicle inner side of the notch 351. At this time, the thin portion where the notch 351 is formed in the seal wall 34 is bent, and the upper end portion of the door glass 2 is almost wrapped by the seal wall 34, so that the sealing property is secured.

[0005]

When the vehicle is running at a high speed, the upper part of the door glass 2 is located outside the vehicle (in the direction of arrow A).
Since the phenomenon of being sucked out to the air occurs, it is necessary to take measures to prevent this.

As a countermeasure, as shown in FIG. 4A, the corner portion 35 is made thicker than the general portion of the seal wall 34, and notches 352 and 353 are formed on the inner surfaces of the outer and inner ends of the seal wall 34, respectively. Can be considered. According to this, when the sealing wall 34 is pushed up by the door glass 2, the thin portion forming the notches 352 and 353 is bent, and the corner portion 35 is substantially perpendicular to the gap between the molding 38 and the door glass 3. The direction intersects with each other, so that the door glass 3 is prevented from being sucked out by the tension of the corner portion 35. In addition, the encapsulation property of the door glass of the seal wall 34 is improved.

However, in this structure, when the door glass 2 is sucked out in the direction of arrow A depending on the assembly variation of the weather strip 3 and the door glass 2, FIG.
As shown in (B), there is a possibility that the door glass 2 pushes up the corner portion 35 and slides on its lower surface and escapes to the outside of the vehicle.

The present invention has been made in view of the above circumstances, and has been made to prevent the weather strip from being sucked out and to ensure good sealing performance without largely changing the conventional structure.

[0009]

SUMMARY OF THE INVENTION The present invention relates to a hollow weather strip attached to an opening edge of a door opening of a vehicle body, wherein a corner portion connecting a side wall on the outside of the vehicle and a sealing wall has a gentle curved surface. A weather strip whose outer side wall is covered with a molding provided along the opening edge, wherein the corner portion is formed to be thicker than a general portion of a seal wall pushed up by a door glass, Notches are formed in the inner surfaces of the side wall-side end and the seal wall-side end of the portion so that the end bends when the seal wall is pushed up by the door glass, and the corner portion is formed. A notch having a smaller groove width than the above notch is formed on an inner surface of a central portion between both end portions.

When the general portion of the seal wall is pushed up by the periphery of the door glass when the door glass is closed, both ends of the corner portion are bent, and the corner portion is substantially perpendicular to the portion between the molding and the upper portion of the door glass. It will be in the state of being sandwiched. When the door glass is sucked out, when a compressive force in the width direction acts on the corner portion, the narrow notch in the center portion is closed and the corner portion projects downward and has a gentle V-shaped cross section.
Since the door glass does not push up the corners and escape to the outside of the vehicle, and the sides of the closed notch press against each other, the degree of bending of the corners is regulated. Demonstrate sufficient tension.

[0011]

FIG. 1 shows a weather strip according to the present invention. A weather strip 3 is attached to a door opening edge along a roof side from a front pillar to a rear pillar of an automobile.

As shown in FIG. 1A, the weather strip 3 includes a mounting base 31, inner and outer side walls 32 and 33 extending from both ends of the mounting base 31, and both side walls 3.
A hollow body is formed by a seal wall 34 connecting the base plates 2 and 33, and the mounting base 31 is fitted to a retainer 4 provided along a door opening edge. It is pushed up by. Interior side wall 32
Seal lips 36, 3
7 is extended, and the seal lip 36 is attached to the door glass 2.
The seal lip 37 contacts the trim 5 attached to the flange 11 of the door opening edge 1. The side wall 32 inside the vehicle is lightened. Weather strip 3
Is made of sponge rubber and is integrally extruded.

The outer end of the retainer 4 on which the mounting base 31 of the weather strip 3 is fitted is connected to the outer side wall 3.
The molding 6 extends along the direction 3 and is inverted in a V-shape and extends upward to form a molding 6 along the roof side. The side wall 33 on the vehicle outer side is brought into close contact with the inner surface of the molding 6.

The corner portion 35 connecting the side wall 33 of the weather strip 3 to the outside of the vehicle and the sealing wall 34 has a gentle curved surface, and the thickness of the corner portion 35 is
Is made thicker than the wall thickness of the general portion of the seal wall 34 against which is pressed. Although it depends on the thickness of the general part, the corner part 3
The thickness of No. 5 is about 1.3 to 1.5 times the thickness of the general part. Notches 352 and 353 are formed on the inner surface of the end of the corner portion 35 on the side wall 33 side and the end portion on the seal wall 34 side, respectively, so as to be thin. A notch 354 having a smaller groove width than the notches 352 and 353 is formed on the inner surface at the center between the two ends of the corner portion 35. The lower end of the molding 6 that is in close contact with and covers the side wall 33 on the outside of the vehicle is the corner 3
5 extends almost to the center.

When the door glass is closed, as shown in FIG. 1B, when the general portion of the seal wall 34 is pushed up by the door glass 2 at a position near the inner end of the corner portion 35, the notch 35 is formed.
Both ends of the thinned corner portion 35 formed by forming 2,353 are bent, and the corner portion 35 receives a slight compressive force in the width direction between the lower end of the molding 6 and the upper portion of the door glass 2. Therefore, it is sandwiched in a state substantially orthogonal to these. Then, a portion from the front upper end to the upper edge surface of the door glass 2 is wrapped by the seal wall 34. At this time, as shown in FIG. 1 (B), the notch 354 at the center is slightly closed by the above-mentioned compressive force, and the corner 35 is slightly projected downward.

When the upper part of the door glass 2 is sucked out of the vehicle (in the direction of arrow A) during high-speed running of the vehicle, the corner portion 35
Has a strong compressive force. As a result, the notch 354 is completely closed as shown in FIG.
The central portion of 5 further projects slightly downward, and the corner portion 35 is deformed into a gentle V-shaped cross section. Therefore, the door glass 2 does not lift the corner portion 35 and escape to the outside of the vehicle.
In addition, the narrow notch 354 is pressed against the opposing groove surfaces by the compressive force, so that the bending angle of the corner portion 35 having a V-shaped cross section does not increase. Therefore, the corner portion 35 shows a large resistance to the movement of the door glass 2 in the outward direction of the vehicle, and
The suction of the door glass 2 is prevented.

It is desirable that the notch 354 has a V-shaped cross-sectional shape so that the opposing groove surfaces are pressed against the entire surface when closed. The width of the open end groove of the notch 354 is about 1 mm or less. If the groove width is made sufficiently small, the depth may be about the same as the notches 352 and 353 on both sides.
5 is desirable in terms of shape stability.

[0018]

The weather strip according to the present invention has a good wrapping around the door glass when the door glass is closed, has excellent sealing performance, and can prevent the door glass from being sucked out when the automobile is running at high speed.

[Brief description of the drawings]

FIG. 1 shows a weather strip according to the present invention.
(A) is a cross-sectional view of the mounting state at a position along the line AA in FIG. 2, (B) is a cross-sectional view of the mounting state when the door glass is closed, (C)
FIG. 4 is an enlarged view of a corner portion when a door glass is sucked out.

FIG. 2 is a side view of an automobile to which the weather strip of the present invention is applied.

FIG. 3 is a cross-sectional view of a conventional weatherstrip at a position along a line AA in FIG. 2;

4A and 4B show a weather strip devised in the process of achieving the present invention, wherein FIG.
(B) is a diagram showing the inconvenience when the weather strip is sucked out of the door glass.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door opening edge of vehicle body 2 Door glass 3 Weather strip 31 Mounting base 32, 33 Side wall 34 Seal wall 35 Corner part 351, 352, 353, 354 Notch 4 Retainer 6 Mall

Claims (1)

[Claims] An attachment base attached to an opening edge of a door opening of a vehicle body, inner and outer side walls extending from both ends of the attachment base, connecting both side walls, and a seal pushed up by a peripheral edge of the door glass when the door glass is closed. A hollow weatherstrip having a wall, wherein a corner portion where a side wall on the outside of the vehicle and a sealing wall are connected has a gentle curved surface, and the side wall on the outside of the vehicle extends along an opening edge of a door opening in a mounted state. In the weather strip covered by the molding provided in the above manner, the corner portion is formed thicker than the general portion of the seal wall, and notches are respectively formed on the inner surfaces of the end portions of the corner portion on the side wall side and the seal wall side. The sealing wall is formed so as to be bent when pushed up by the door glass, and the inner surface at the substantially central position between both ends of the corner portion is more grooved than the notch. A weather strip for an automobile, wherein a notch having a small width is formed.