JPH08192632A - Vehicular weather strip - Google Patents

Abstract

PURPOSE: To prevent the protrusion of a weather strip and improve appearance by forming a V-groove on a seal end section free from contact with a door sash, and thickening a major seal section, regarding a weather strip fitted to the outer periphery of a door sash. CONSTITUTION: Regarding a vehicular weather strip fitted to the outer periphery of a door sash 3 and kept in contact with the internal side thereof at all times at an exterior position faced to the internal side, a V-groove is formed on the end of a seal section free from contact with the sash 3, and a main seal section 1a is thickened. In this case, the thickness of the section 1a is kept approximately 1.3 to 2.0 times as large as the thickness of the seal section, and the length of the thickened portion 1b of the section 1a is set at a value between 60% and 90% of the length thereof. According to this construction, a thin and approximately V-groove 1d on the end of the seal adheres to the weather strip, thereby absorbing the slackening of the strip and preventing the protrusion thereof.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a weather strip for automobiles.

[0002]

2. Description of the Related Art The main seal portion and the seal end portion of the weather strip have the same thickness.

[0003]

[Problems to be Solved by the Invention]

1) When the doors for automobiles are built or the weatherstrip shape varies, the weatherstrip protrudes from the space between the car body and the door to the outside of the vehicle, resulting in poor appearance. 2) In addition, it has a drawback that the weather strip breaks because it is in a bitten state.

[0004]

As a result of intensive research to solve the above problems, the present invention has been achieved, that is, the present invention is attached to the outer peripheral edge portion of a door sash, and the vehicle interior of the outer peripheral edge portion. In a weather strip for an automobile, which is always in contact with the inner side surface of the door sash on the vehicle outer surface facing the side surface, a V groove portion is provided in the non-contact portion of the door sash at the end portion of the seal portion, and the main seal portion is thickened, The thickness of the thick portion of the main seal portion is 1.3 to 2.
The weather strip for an automobile is 0 times the length of the thick wall portion of the main seal portion and 60 to 90% of the length of the main seal portion.

The present invention will be described with reference to the drawings. FIG. 1 is a sectional view of a conventional weather strip W, and FIG. 2 is a vehicle body 2 and a door sash 3 of the conventional weather strip W.
In the cross-sectional view showing the attached state with the above, the conventional weather strip has a drawback that a protrusion H is generated in the main seal portion 1a of the seal portion 1. The seal portion 1 is the main seal portion 1a
Since the thickness of the seal end portion 1e is the same as b, the non-contact portion of the main seal portion 1a where the load of the door sash does not contact the door sash 3 is H, which is unsightly and causes weathering in the extreme case of being caught. The defect that the strip breaks occurs.

FIG. 3 is a cross-sectional view of the weather strip W of the present invention. In order to prevent the main seal portion 1a from protruding, a thick portion 1b is provided inside the main seal portion to prevent the protrusion due to bending, and the seal portion 1a. Seal the slack part 1
The thin, substantially V-shaped groove 1d is provided in the groove e to absorb the light. FIG. 4 shows the weather strip body 2 and the door sash 3 of FIG.
FIG. 9 is a cross-sectional view showing the attached state of FIG. 2B, in which the thin V-shaped groove portion of the seal end is in close contact with the slack and absorbs the slack.

In FIG. 5, the thick portion 1c of the main seal portion 1a is provided on the outer side, and a thin V-shaped groove portion 1d of the seal end portion 1e is provided.
Have.

The thickness of the thick portion of the main seal portion of the present invention is preferably 1.3 to 2.0b of the thickness b of the seal portion. 1.3
If it is less than 2 times, it is impossible to prevent protrusion, and if it is 2.0 times or more,
The rigidity becomes too strong, which is not desirable.

The length of the thick seal portions 1b and 1c of the present invention is preferably 60 to 90% of the length of the main seal portion 1a. If it is less than 60%, the thin portion of the main seal portion will not stick out, which is undesirable.
If it exceeds 90%, a problem occurs in the sealing property.

Set angle θ of the thin V-shaped groove portion of the seal of the present invention
An angle of 45 to 90 degrees is desirable. When the angle is 45 degrees or less, slack is generated at the end of the seal, which is not desirable, and when the angle is 90 degrees or more, slack is also generated, which is not preferable.

Regarding the rubber hardness of the weather strip W of the present invention, the thick portion and the thin portion have the same rubber hardness.

[0012]

Since the main seal portion of the weather strip used between the automobile body and the door sash is provided with the thick portion and the seal end portion is provided with the thin substantially V groove portion, the slack and the protrusion of the seal portion are reduced.

[0013]

EFFECTS OF THE INVENTION Since the weather strip which is interposed between the vehicle body and the door sash does not stick out, the appearance is improved and the tear can be prevented.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of the shape of a conventional weather strip.

FIG. 2 is a cross-sectional view showing a state in which a conventional weather strip is attached to an automobile body.

FIG. 3 is a sectional view showing the shape of the weather strip of the present invention.

FIG. 4 is a cross-sectional view showing how the weather strip of the present invention is attached to an automobile body.

FIG. 5 is a sectional view showing the shape of another weather strip according to the present invention.

FIG. 6 is a cross-sectional view showing how another weather strip (FIG. 5) of the present invention is attached to an automobile body.

FIG. 7 is a cross-sectional view of another shape weatherstrip of the present invention.

FIG. 8 is a schematic view of an automobile showing a use part.

[Explanation of symbols]

 1 Sealing Part 1a Main Sealing Part 1b Sealing Thickness Part (Middle Side) 1c Sealing Thickness Part (Outside) 1d Sealing Thin V Groove Part 1e Sealing End Part 2 Car Body 3 Door Sash A Car B Weatherstrip Used Part C of the Present Invention Part of weather strip H Overhang W Weather strip

Claims (3)

[Claims] 1. Attached to an outer peripheral edge of a door sash,
In a vehicle weather strip that is constantly in contact with the vehicle inner side surface of the door sash on the vehicle outer side surface of the outer peripheral edge portion facing the vehicle inner side surface, a V groove portion is provided in a non-contact portion of the door sash at the end of the seal portion, and a main seal is provided. A weather strip for automobiles, characterized by having a thickened portion. 2. The weather strip for an automobile according to claim 1, wherein the thickness of the thick portion of the main seal portion is 1.3 to 2.0 times the thickness of the seal portion. 3. A weather strip for an automobile, wherein the thickness of the thick portion of the main seal portion is 60 to 90% of the length of the main seal portion.