JP-2026075190-A - Automotive weatherstrips

Abstract

[Problem] To provide an automotive weatherstrip that can prevent sticking of the hollow seal portion when it returns to its original shape after the door is closed, and can also suppress the generation of abnormal noise when the door is in contact with the door. [Solution] The vehicle comprises a mounting base 22 with a U-shaped cross-section that is attached to a flange portion 05 formed along the door opening edge of the vehicle body, and a hollow seal portion 26 whose tip portion 26c is compressed and deformed when the door panel is pressed against it when the front door 02 is closed. Multiple protrusions 30, 31 are provided along the longitudinal direction of the hollow seal portion on the outer surface of the outer side wall 24 on the hollow seal portion side and on the inner surface on the side opposite to the tip portion of the hollow seal portion that is continuous with the outer surface, and when the front door is closed, the inner surface 26f of the compressed and deformed tip portion of the hollow seal portion abuts against it. Each of these protrusions is formed in the shape of an equilateral triangle in cross-section and is arranged continuously without any gaps between adjacent protrusions. [Selection Diagram] Figure 3

Inventors

• 大川 義一

Assignees

• 鬼怒川ゴム工業株式会社

Dates

Publication Date

20260508

Application Date

20241022

Claims (5)

1. An automotive weatherstrip comprising: a mounting base attached to a flange portion formed along the opening edge of the vehicle body; and a hollow sealing portion coupled to the outer surface of the mounting base, the tip of which is compressed and deformed as the door panel is pressed against the door when the door is closed, thereby sealing the space between the vehicle body opening and the door; Multiple protrusions are provided along the longitudinal direction of the hollow seal portion on the outer surface of the mounting base on the hollow seal portion side and on the inner surface of the hollow seal portion opposite to the tip portion, which is continuous with the outer surface, so that when the door is closed, the inner surface of the tip portion of the hollow seal portion, which is compressed and deformed, will come into contact with it. Automotive weatherstrip characterized in that each projection is arranged continuously without any gap between adjacent projections.
2. Automotive weatherstrip as described in claim 1, Automotive weatherstrip characterized in that the height of each of the aforementioned protrusions differs between adjacent protrusions.
3. Automotive weatherstrip as described in claim 1, Automotive weatherstrip characterized in that the height of all the aforementioned protrusions is set to be approximately the same.
4. Automotive weatherstrip as described in claim 1, The aforementioned projections are characterized by being formed in a triangular cross-sectional shape with their apex being the tip, in the automotive weatherstrip.
5. Automotive weatherstrip as described in claim 1, The mounting base is formed of a hard rubber or resin material, while the hollow sealing portion is formed of a soft sponge material. Automotive weatherstrip characterized in that the projection on the mounting base side is formed of the same material as the mounting base, and the projection on the hollow seal side is formed of the same material as the hollow seal.

Description

This invention relates to an automotive weatherstrip that is attached to the periphery of the door opening on the vehicle body side, elastically contacting the door periphery to seal the interior and exterior of the vehicle. A conventional automotive weatherstrip (hereinafter simply referred to as "weatherstrip") for this type of door opening is known, as described in Patent Document 1 below. Figure 1 is a perspective view of an automobile to which the present invention and conventional automotive weatherstrips are applied, Figure 8 is an enlarged cross-sectional view showing a conventional automotive weatherstrip, and Figure 9 is an enlarged view of section D in Figure 8. The conventional weatherstrip 1 described in this publication is attached to a flange portion 05 at the tip of a body panel 04 formed along the periphery of the door opening 03 of, for example, the front door 02 of an automobile 01, as shown in Figures 1 and 8. As shown in Figure 8, this weatherstrip 1 has a mounting base 2, which is a U-shaped welt portion that fits onto the tip of the flange portion 05 and has a connecting wall 5 that connects the inner side wall 3, the outer side wall 4, and both side walls 3 and 4; and a hollow sealing portion 6 made of sponge rubber material that is integrally provided on the outer surface of the outer side wall 4 of the mounting base 2, and which elastically contacts the door panel 06 at the periphery of the front door 02 when the front door 02 is closed. The mounting base 2 has a retaining lip 3a on the inner surface of the inner side wall 3, while three upper and lower protrusions 4a are integrally provided on the inner surface of the outer side wall 4. The flange portion 05 is held in a clamping state by these retaining lip 3a and three protrusions 4a. The hollow seal portion 6 is formed in a substantially elliptical cross-section, with one end 6a connected to the outer surface of the outer side wall 4 at approximately the center in the width direction, while the other end 6b is connected to the outer surface of the end of the mounting base 2 of the outer side wall 4 near the opening. Furthermore, the hollow seal portion 6 has bent portions 6d and 6e near the connected ends 6a and 6b, so that when the front door 02 is closed and the door panel 06 is pressed against the tip portion 6c, the hollow seal portion 6d and 6e are compressed and deformed at the bending points. Also, in Figure 8, an anti-sticking portion 7 is formed on the inner surface of the hollow seal portion 6 from the lower bent portion 6d to the one end 6a. As shown in Figures 8 and 9, this anti-sticking portion 7 is composed of multiple protrusions 7a integrally formed on the inner surface from the lower bent portion 6d to one end portion 6a of the aforementioned hollow seal portion, and recesses 7b formed with a predetermined gap between adjacent protrusions 7a. Furthermore, when the front door 02 is closed, the hollow seal portion 6 is compressed and deformed at its tip 6c side via both bent portions 6d and 6e by the pressing force of the door panel 06, thereby sealing the space between the door opening 03 and the door panel 06. Furthermore, especially when the front door 02 is closed forcefully (overstroke), the hollow seal portion 6 undergoes compression deformation, causing the inner surface 6f of the tip portion 6c to come into contact with the protrusions 7a and 7b of the anti-sticking portion 7. However, immediately afterward, as the hollow seal portion 6 attempts to return to its original shape, the anti-sticking portion 7 prevents the inner surface 6f of the tip portion 6c from sticking to the inner surface of the other end. Japanese Patent Publication No. 2005-75168 (see Figures 2 and 3) This is a perspective view of an automobile to which the present invention and conventional automotive weatherstrips are applied.This is a cross-sectional view taken along line A-A in Figure 1, showing an embodiment of the automotive weatherstrip according to the present invention.This is an enlarged view of the main part of the automotive weatherstrip of this embodiment shown in Figure 2.This is an enlarged view of section B in Figure 3.This is an enlarged view of section C in Figure 3.This is a schematic diagram showing the state in which the tip of the hollow seal portion used in this embodiment is compressed and deformed, and in contact with each of the protrusions.This schematic diagram shows a second embodiment of the present invention, illustrating the state in which the tip of the hollow seal portion is compressed and deformed, and in contact with each of the protrusions.This is an enlarged cross-sectional view showing a conventional automotive weatherstrip.This is an enlarged view of section D in Figure 8. The following describes an embodiment of the automotive weatherstrip according to the present invention, based on the drawings. This weatherstrip, like the conventional one described above, is applied to the periphery of the d