JP2001213174A - Weather strip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weather strip having an extremely compact configuration and capable of maintaining satisfactory appearance. SOLUTION: This weather strip has a base part fixed on an outer peripheral face of a door panel, a hollow main seal part protruding toward an inner peripheral face of a door opening part partitioned by a body panel from the base part, a hollow subseal part which protrudes toward an inner peripheral end fringe of the door opening part adjacent to the main seal part from the base part and in which a first seal lip part is provide and protrudes on a protruding outer peripheral wall, and a second seal lip protruding toward an outer peripheral end fringe of the door panel adjacent to the subseal part from the base part. Since it is formed by providing solid covering parts in layers over an outer face of the first seal lip part close to the second seal lip part and the protruding outer peripheral face of the subseal part, flexural rigidity of an outer surface of a bent part bent at a sharp angle is increased by the solid covering parts to effectively prevent the occurrence of a folding wrinkle which impairs the appearance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weatherstrip mounted around the outside of a door of a vehicle to seal between the door and the vehicle body.

[0002]

2. Description of the Related Art As shown in FIGS. 3 and 4, a weather strip 10 mounted on a relatively linear and long area around the outside of a door panel DP in a vehicle, particularly a passenger car, is usually made of an ethylene propylene rubber material. It is extruded from a synthetic sponge rubber material and / or a synthetic resin material. The weather strip 10 includes a base 11 fixed to the outer peripheral surface of the door panel DP, and a body panel BP from the base 11.
A hollow main seal portion 12 protruding toward the inner peripheral surface of the door opening portion defined by the inner peripheral edge of the door opening portion adjacent to the main seal portion 12 from the base portion 11. A hollow sub-seal portion 13 protruding toward the outer peripheral wall and a first seal lip portion 14 protruding from the protruding outer peripheral wall, and protruding from the base portion 11 to the outer peripheral edge of the door panel DP adjacent to the sub-seal portion 13. And the second seal lip 15.

The outer peripheral walls of the hollow main seal portion 12 and the hollow sub-seal portion 13 which are elastically deformed by being pressed against the inner peripheral surface of the door opening defined by the body panel BP, and The first seal lip portion 14 and the second seal lip portion 15 which is elastically deformed by being pressed against the outer peripheral edge of the door panel DP are each made of synthetic sponge rubber material, and are shown in FIG. 4 from the free state shown in FIG. Also, the elastic deformation accompanying the opening and closing of the door after mounting is facilitated.
In addition, the base 11 is also generally made of a synthetic sponge rubber material, and facilitates attachment via a retainer of the door panel DP, a clip indicated by a dashed line, and the like.

[0004]

However, the conventional weatherstrip 10 has the above-mentioned second structure by closing the door.
The first seal lip portion 14 near the seal lip portion 15
There is a drawback that a plurality of deep folds are easily generated in the acute bent portion 14a formed between the outer surface of the hollow sub-seal portion 13 and the projecting outer peripheral surface of the hollow sub-seal portion 13 so as to impair the appearance.

An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a weather strip which can maintain an excellent appearance with an extremely compact structure.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a base fixed to an outer peripheral surface of a door panel and projecting from the base toward an inner peripheral surface of a door opening defined by a body panel. A hollow main seal portion, and a hollow main seal portion protruding from the base portion toward the inner peripheral edge of the door opening adjacent to the main seal portion and protruding from the protruding outer peripheral wall. In a weather strip having a sub-seal portion and a second seal lip portion protruding from the base portion to an outer peripheral edge of the door panel adjacent to the sub-seal portion, the first seal near the second seal lip portion A solid coating portion is formed from the outer surface of the lip portion to the projecting outer peripheral surface of the hollow sub-seal portion, and the outer surface of the first seal lip portion and the hollow portion are formed by closing a door. It is achieved by weatherstripping, characterized in that to prevent the occurrence of wrinkles bending disfiguring the sharp bent portion which is formed between the projecting outer circumferential surface of the Bushiru portion.

Further, the above object of the present invention is attained by a weatherstrip, wherein the solid coating is layered within a thickness range of 0.2 to 0.8 mm.

[0008]

The weatherstrip of the present invention is characterized in that the base portion fixed to the outer peripheral surface of the door panel and the inner peripheral surface of the door opening defined by the body panel project from the base portion. A hollow main seal portion, and the hollow protruding from the base portion to an inner peripheral edge of the door opening adjacent to the main seal portion and projecting the first seal lip portion on a protruding outer peripheral wall. A second seal lip portion protruding from the base portion toward the outer peripheral edge of the door panel adjacent to the sub seal portion, the second seal lip portion being closer to the second seal lip portion. Since the solid coating portion is formed by layering from the outer surface of the first seal lip portion to the projecting outer peripheral surface of the hollow sub-seal portion, the solid coating portion is formed by the solid coating portion. Is increased flexural rigidity of the outer surface of the sharp bends, the occurrence of such creases as disfiguring is effectively prevented.

Further, in the weather strip of the present invention, the solid coating portion is layered within a thickness range of 0.2 to 0.8 mm, so that the structure around the acute bent portion is not complicated. In addition, the formability of the entire weather strip is kept good.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the weather strip of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a cross-sectional view showing a main part of the weather strip of the present invention in a free state, and FIG. 2 is a cross-sectional view showing a main part of the weather strip of the present invention in a door closed state after mounting. As shown in FIG. 1, the main part of the weatherstrip 20 of the present invention, which is mounted on a relatively linear and long area around the outer periphery of the door panel DP in a vehicle, particularly a passenger car, includes a solid coating portion 26 described later. Has a configuration substantially the same as that of the conventional weatherstrip 10 described above.

That is, the essential parts of the weather strip 20 of the present invention are extruded from a synthetic sponge rubber material made of ethylene propylene rubber material, and are fixed to the outer peripheral surface of the door panel DP. A hollow main seal portion 22 protruding toward an inner peripheral surface of a door opening defined by the body panel BP;
A hollow sub-seal portion 23 protruding toward the inner peripheral edge of the door opening adjacent to the main seal portion 22 and having a first seal lip portion 24 protruding from the protruding outer peripheral wall;
A second seal lip portion 25 protruding from the base portion 21 to the outer peripheral edge of the door panel DP adjacent to the sub-seal portion 23;

The outer peripheral walls of the hollow main seal portion 22 and the hollow sub seal portion 23, which are elastically deformed by being pressed against the inner peripheral surface of the door opening defined by the body panel BP, and The first seal lip portion 24 and the second seal lip portion 25 which is elastically deformed by being pressed against the outer peripheral edge of the door panel DP are each made of synthetic sponge rubber material, and are shown in FIG. 2 from the free state shown in FIG. Also, elastic deformation accompanying opening and closing of the door after mounting is facilitated. The base 21 is also generally made of a synthetic sponge rubber material, and secures attachment via the retainer of the door panel DP, a clip indicated by a dashed line, and the like. The weatherstrip 20 of the present invention, which seals a relatively straight and long area around the door opening in a vehicle, especially a passenger car, is extruded from a synthetic sponge rubber material comprising ethylene propylene rubber material.

Further, a feature of the weather strip 20 of the present invention is that a solid coating portion extends from the outer surface of the first seal lip portion 24 near the second seal lip portion 25 to the projecting outer peripheral surface of the hollow sub-seal portion 23. 26 in layers. The solid coating portion 26 enhances the bending rigidity of the outer surface of the sharp bent portion 26a, and effectively prevents the occurrence of wrinkles that impair the appearance.

The solid coating portion 26 is formed by, for example, co-extrusion molding with a thickness of 0.2 to 0.8 mm using, for example, an ethylene propylene rubber material as a main polymer. Therefore, the formability of the entire weatherstrip is kept good without complicating the configuration around the typical bent portion. If the thickness of the solid coating portion 26 is less than 0.2 mm, wrinkles are easily generated by closing the door, while if the thickness exceeds 0.8 mm, the hollow sub-seal portion The bending rigidity of the door 23 is increased, and a problem that requires a large door closing force is likely to occur.

[0015]

The weatherstrip of the present invention described above has the following novel effects. That is, the weather strip of the present invention includes the base portion fixed to the outer peripheral surface of the door panel, and the hollow protruding from the base portion toward the inner peripheral surface of the door opening defined by the body panel. Shaped main seal part,
The hollow sub-seal portion protruding from the base portion toward the inner peripheral edge of the door opening adjacent to the main seal portion and projecting the first seal lip portion on a protruding outer peripheral wall; An outer surface of the first seal lip near the second seal lip in the weather strip having a second seal lip protruding toward an outer peripheral edge of the door panel adjacent to the sub-seal portion from the portion. Since the solid coating portion is layered over the projecting outer peripheral surface of the hollow sub-seal portion from above, the bending rigidity of the outer surface of the sharply bent portion is increased by the solid coating portion so that the appearance is impaired. It has become possible to effectively prevent the occurrence of wrinkles.

Further, in the weather strip of the present invention, the solid coating portion is layered within a thickness range of 0.2 to 0.8 mm, so that the configuration around the acute bent portion is not complicated. Thus, it is possible to maintain good moldability of the entire weather strip.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a main part of a weather strip of the present invention in a free state.

FIG. 2 is a cross-sectional view showing a main part of the weatherstrip of the present invention in a door closed state after mounting.

FIG. 3 is a cross-sectional view showing a main part of a conventional weatherstrip in a free state.

FIG. 4 is a cross-sectional view showing a main part of a conventional weatherstrip in a door closed state after mounting.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Conventional weather strip 11 Base part 12 Main seal part 13 Sub seal part 14 First seal lip part 14a Bent part 15 Second seal lip part DP Door panel BP Body panel 20 Weather strip 21 Base part 22 Main seal part 23 Sub seal of the present invention Part 24 First seal lip part 25 Second seal lip part 26 Solid coating part 26a Bent part

Claims (2)

[Claims] 1. A base (21) fixed to an outer peripheral surface of a door panel (DP), and from the base (21) toward an inner peripheral surface of a door opening defined by a body panel (BP). A protruding hollow main seal portion (22), and protruding from the base portion (21) to the inner peripheral edge of the door opening adjacent to the main seal portion (22) and formed on the protruding outer peripheral wall. (1) a hollow sub-seal portion (23) protruding a seal lip (24); and the door panel (D) adjacent to the sub-seal portion (23) from the base portion (21).
P) a second sealing lip (25) protruding toward the outer peripheral edge of the weatherstrip (20), wherein the first sealing lip (24) is closer to the second sealing lip (25). A solid coating portion (26) extending from the outer surface to the projecting outer peripheral surface of the hollow sub-seal portion (23);
A sharp bend (26a) formed between the outer surface of the first seal lip (24) and the projecting outer peripheral surface of the hollow sub-seal (23) when the door is closed. A weather strip, which prevents the occurrence of wrinkles that impair the appearance. 2. The weatherstrip according to claim 1, wherein the solid coating portion (26) is layered within a thickness range of 0.2 to 0.8 mm.