JPH07101293A - Weatherstrip for automobile - Google Patents

Abstract

PURPOSE:To prevent the permanent deformation of an inner seal lip with the tip thereof pressed by the surface of a door glass at the time of closing a door, by the repetition of opening/closing the door. CONSTITUTION:An inner seal lip 32 with the tip thereof pressed by the inner surface of a door glass 5 is extended from the body 31 of the molded part 3a of a weatherstrip 3, and the root part inner surface of the inner seal lip 32 is provided with a rib 34 formed in the width direction of the weatherstrip 3 so as to enhance the rigidity of the root part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip mounted along a roof side of an automobile, and more particularly to a structure of a molding portion thereof.

[0002]

2. Description of the Related Art As shown in FIG. 1, a weather strip 3 extending along a roof side 1 of an automobile has a weather strip formed by extrusion molding connected at a central portion thereof by a molding portion 3A, and a rear corner portion thereof. It is configured to be connected at the mold forming portion 3B, and the mold forming portions 3C and 3D are connected to the front and rear terminals. The molding portion 3A is connected to the weather strip 4 along the center pillar 2.

FIG. 3 shows a cross section of the molding portion 3A, but the weather strip 3 has a substantially common cross sectional shape over the entire length. That is, the weather strip 3
Is a hollow main body 31 that is pressed by the peripheral edge of the door glass 5 when the door is closed, an inner seal lip 32 whose tip is pressed by the inner surface of the door glass, and a tip along the inside of the weather strip 3 along the roof side 1 Inner seal lip 33 for engaging the garnish 6 mounted on the
And is generally made of sponge rubber. The weather strip 3 is attached to the roof side 1 via a retainer 10.

[0004]

By the way, since the inner seal lip 32 is collapsed every time the door is opened and closed, the inner seal lip 32 is gradually bent at the base portion, and the pressure contact force against the door glass 5 is reduced. This can be prevented by increasing the rigidity of the root portion by thickening the thinned root inner surface 321 of the lip 32 so as to build up over the entire length of the weather strip.

However, in the molded portion 5A (the same applies to the other molded portions), the surface of the root portion of the inner seal lip 32, which is thicker than the other portions, is roughened by foaming gas during molding and the appearance is impaired. .

Therefore, it is an object of the present invention to provide a weather strip which does not bend and is not apt to be bent on the inner seal lip of the molding portion that is pressed against the inner surface of the door glass even if the door is repeatedly opened and closed. It was made as.

[0007]

According to the present invention, as shown in FIG. 2, the inner surface of the root portion of the inner seal lip 32 of the weatherstrip type molding portion 3A whose tip is pressed by the inner surface of the door glass 5 when the door is closed. The ribs 34 are provided so as to project in the width direction of the weather strip.

[0008]

The rib 34 strengthens the rigidity of the root portion of the inner seal lip 32 and prevents the inner seal lip 32 from bending. In addition, the surface roughening does not occur when the root portion provided with the elongated rib 34 is molded.

[0009]

EXAMPLE As shown in FIG. 2, a molding portion 3A is T-shaped, and two weather strips 3 extruded along a roof side 1 and a weather strip 4 extruded along a center pillar are connected to each other. ing.

Like the extrusion molding portion, the molding portion 3A is made of sponge rubber, and has a hollow main body 31 and inner seal lips 32, 3 extending from the main body 31 in a T-shaped cross section.
Equipped with 3. The weather strip 3 including the molding portion 3A is attached to the roof side 1 via the retainer 10, and the tip of the inner seal lip 33 is attached to the garnish 6 attached to the roof side edge along the inside of the weather strip 3. It is engaged.

Although the inner surface of the root portion of the inner seal lip 33 of the mold forming portion 3A is hollowed out, the inner surface of the base portion of the inner seal lip 32 has a rib 34 in the width direction of the mold forming portion 3A.
Is projected. Although the number of ribs 34 is one in the illustrated example, a plurality of ribs 34 may be provided at predetermined intervals.

When the door is closed in the molding section 3A, the peripheral edge of the door glass 5 is pressed against the main body 31, and the inner surface of the peripheral corner is pressed against the tip of the inner seal lip 32 so as to form a double layer. Make a seal.

Since the rib 34 is formed at the root of the inner seal lip 32 to strengthen the waist,
A sufficient pressure contact force is obtained with respect to the door glass 5, and even if the pressing by the door glass 5 is repeated for a long time every time the door is opened and closed, the root portion is not bent and permanent deformation does not occur. In addition, by providing the thin ribs 34, surface roughness does not occur during molding.

Although the above-mentioned embodiment is directed to the central molding portion 3A of the weather strip 3, the present invention can be applied to the molding portion at other portions of the weather strip 3.

[0015]

According to the present invention, the sealing property of the inner seal lip which is pressed against the door glass surface can be favorably maintained for a long period in the weather strip molding portion along the roof side of the automobile.

[Brief description of drawings]

FIG. 1 is a side view of an automobile equipped with a weather strip of the present invention.

FIG. 2 (A) is a front view of a mold forming portion of a weather strip of the present invention, and FIG. 2 (B) is a sectional view taken along line BB of FIG. 2 (A).

FIG. 3 is a view of a conventional weather strip corresponding to FIG. 2 (B).

[Explanation of reference numerals] 1 Roof side 3 Weather strip 3A, 3B, 3C, 3D Molding part 31 Main body 32, 33 Inner seal lip 34 Rib 5 Door glass

Claims (1)

[Claims] 1. A hollow main body which is mounted along the roof side of an automobile and is pressed by the peripheral edge of the door glass when the door is closed, and an inner body which extends from the inner end of the main body and whose front end is pressed by the inner surface of the peripheral edge of the door glass. A weather strip for a vehicle, comprising: a weather strip provided with a seal lip, wherein ribs are provided so as to protrude in a width direction of the weather strip inside a root portion of an inner seal lip of a molding portion of the weather strip.