JPH06278551A - Weather strip for automobile - Google Patents

Abstract

PURPOSE:To manufacture a weather strip, which is fitted continuously from a front pillar to a quarter pillar of an automobile and of which shape of the seal part is changed from the hollow shape to the lip shape, from one extrusion molding material. CONSTITUTION:A weather strip is formed of an extrusion molding weather strip having a continuous hollow part over the full length, and a hollow seal part 43 of a front pillar part 4A is formed of a hollow part itself formed by the extrusion molding, and a seal lip 45 of a part 4B in a range from a roof side to a quarter pillar is formed by crushing the hollow part, and a seal part of a corner part 4C transiting from the hollow seal part 43 to the seal lip 45 is formed with a gradually changed seal part 44, which is obtained by crushing the hollow shape gradually from the hollow shape to the lip shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip for an automobile, and more particularly to a weather strip for sealing a door opening of an automobile.

[0002]

2. Description of the Related Art As a weather strip of this type, FIG.
As shown in FIG. 1, a weather strip 4 that is attached in series over the front pillar 1, the roof side 2 and the quarter pillar 3 of the automobile is used.

As shown in FIG. 3, the weather strip 4 has a greatly different cross-sectional shape between the front pillar portion 4A and the other portion 4B. That is, in the front pillar portion 4A, as shown in FIG. 3B, a C-shaped mounting base portion 41a, a sub-lip 42a protruding from the side surface of the mounting base portion 41a, and a sub-lip 42a protruding from one end of the mounting base portion 41a, the door 5
The hollow seal portion 43a is in contact with the front end edge of the.
On the other hand, part 4B from the roof side to the quarter pillar
As shown in FIG. 3C, the mounting base 41b and the sub-lip 42b have basically the same cross-sectional shape as those of the front pillar portion 4A, but the seal lip 43b extends from one end of the mounting base 41b. ing.

Therefore, in the production of the weather strip 4, the front pillar portion 4A and the other portion 4B are extruded separately, and the ends are separated from each other by the cross-sectional shape of the front pillar portion 4A. This is performed by forming the corner portion 4C by die-molding connection so as to gradually change to a sectional shape of 4B, and the productivity is not good.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is composed of one extruded material,
Another object of the present invention is to provide a weather strip in which the cross-sectional shapes of the front pillar portion and other portions are different, thereby improving the productivity of the weather strip.

[0006]

SUMMARY OF THE INVENTION The weatherstrip of the present invention comprises an extruded weatherstrip having a series of hollows throughout its length. Then, as shown in FIG.
As shown in (B), in the front pillar portion 4A, the hollow portion formed by extrusion is used as it is as the hollow seal portion 43,
As shown in FIGS. 1 (A) and 1 (C), in the portion 4B extending from the roof side to the quarter pillar, the hollow portion is crushed to form a seal lip 45, and as shown in FIGS. 1 (A) and 1 (D), both portions are formed. In the corner portion 4C connecting 4A and 4B, the hollow portion is gradually crushed from the portion 4A side to the portion 4B side to form the gradually changing seal portion 44.

[0007]

The weather strip of the present invention can be made from a single extruded weather strip. Therefore, the productivity of the weather strip is improved.

[0008]

The weather strip of the present invention will be described together with its manufacturing method.

As shown in FIG. 1, a weather strip 4
Has an arcuate shape along the front pillar 1, roof side 2 and quarter pillar 3 (FIG. 3) of the automobile. The weather strip 4 comprises a series of C-shaped cross-section mounting bases 41 and sub-lips 42 extending from the bases 41 over their entire length. Then, the front pillar portion 4A projects from one end of the mounting base portion 41 as shown in FIG. 1 (B), and the hollow seal portion 43 to which the front edge of the door 5 is pressed.
The portion 4B from the roof side 2 to the quarter pillar 3 is provided with a seal lip 45 whose tip is pressed against the side edge of the roof side 2 and the outer surface of the quarter pillar 3, as shown in FIG. Part 4C is shown in FIG.
As shown in (D), the hollow seal portion 43 and the seal lip 45 are connected to each other, and a gradually changing seal portion 44 is provided which gradually changes the cross-sectional shape from the hollow shape to the lip shape.

In order to obtain the weather strip 4, first, a weather strip intermediate product having a hollow base having the same cross-sectional shape as the solid rubber mounting base 41, the sponge rubber sub-lip 42, and the hollow seal 43 is extruded. Mold. In the front pillar portion 4A, as shown in FIG. 1 (B), the hollow portion formed by extrusion is used as it is as a hollow seal portion 43, and the roof side and the quarter pillar portion 4B are formed.
Then, as shown in FIG. 1 (C), the hollow portion is crushed to form the seal lip 45, and in the corner portion 4C, as shown in FIG. 1 (D), the hollow portion is hollowed from the portion 4A side to the portion 4B side. The gradually changing seal portion 44 is formed by gradually crushing from the hollow shape of the seal portion 4A to the lip shape on the side of the portion 4B.

In the crushing process, for example, a pair of rollers facing each other is installed with variable facing intervals, a weather strip extruded from an extruder is passed between both rollers, and a corner portion 4C is formed.
When passing through, the rollers are gradually brought close to each other, and in the subsequent portion 4B, the hollow portions are pressed from both sides by both rollers to form a lip shape. Depending on the vehicle model, the protruding length of the seal lip 45 of the weather strip 4 may be changed, but in this case, cutting is performed by a cutter during the extrusion process.

[0012]

According to the present invention, a weather strip, which is attached in series from the front pillar to the quarter pillar of an automobile and whose seal portion changes from a hollow shape to a lip shape, is manufactured from a single extruded material. You can Therefore, the productivity of the weather strip can be improved and the manufacturing cost can be reduced.

[Brief description of drawings]

1 (A) is an overall view of a weather strip according to the present invention, and FIGS. 1 (B), 1 (C) and 1 (D) are respectively IB-IB lines in FIG. 1 (A). , IC-IC line and ID-ID
It is sectional drawing which follows the line.

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

FIG. 3 (A) is an overall view of a conventional weather strip, and FIGS. 3 (B) and 3 (C) are respectively FIG.
It is sectional drawing which follows the IIIB-IIIB line and IIIC-IIIC line of (A).

[Explanation of symbols]

 1 Front Pillar 2 Roof Side 3 Quarter Pillar 4 Weather Strip 4A Front Pillar Part 4B Roof Side Part 4C Corner Part 41 Mounting Base 43 Hollow Seal Part 44 Gradual Change Seal Part 45 Seal Lip

Claims (1)

[Claims] 1. A weather strip which is mounted in series over a front pillar, a roof side and a quarter pillar of a vehicle body, wherein the front pillar portion has a hollow seal portion against which a door front edge is pressed, and the roof side portion and The quarter pillar portion has a series of seal lips whose tip abuts on the side edge of the roof and the quarter pillar surface, and the hollow seal portion and the seal lip at the corner portion that transitions from the front pillar portion to the roof side portion. In a weather strip having a gradually changing seal part whose cross-sectional shape gradually changes from a hollow seal part shape to a seal lip shape, the weather strip is an extruded weather strip having a series of hollow parts over the entire length. The hollow portion formed by extruding the hollow seal portion of the front pillar portion Formed by itself, the seal lip from the roof side part to the quarter pillar part is formed by crushing the hollow part into a lip shape, and the gradually changing seal part of the corner part is formed from the front pillar part side to the roof side part side. A weather strip for automobiles, which is characterized by being gradually crushed.