JP2001063377A - Retainerless weather strip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure stable sealing performance by extrusionmolding a high foaming sponge material to a base part of an extrusion molding part, integratedly forming them, cutting out a prescribed part of the extrusion molding part, integratedly forming a mold forming part, and extending the base part and the high foaming sponge material until the mold forming part. SOLUTION: A retainerless weather strip 10 is integratedly formed by extrusion-molding a high foaming sponge material 13 along an outside edge of a lower surface in a base part 11 of an extrusionmolding part 14. A prescribed part (a corner part) of the extrusion molding part 14 is cutout remaining the base part 11 and the high foaming sponge material 13, the cutout part is mold-formed, and is formed as a prescribed shaped mold forming part 15. The base part 11 of the extrusion molding part 14 and the high foaming sponge material 13 are extended until the mold forming part 15, and the high foaming sponge materials 13 are continuously arranged on a lower surface of the base part 11 with seamless. Namely, the high foaming sponge materials 13 are continuously disposed with seamless even on a continuously arranging part of the extrusion molding part 14 and the mold forming part 15 so as to provide a seamless seal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip to be mounted on a door panel of an automobile by a mounting means other than a retainer.

[0002]

2. Description of the Related Art A description will be given with reference to FIGS.
Many of the automobile door weather strips 60 are mounted on a retainer 21 mounted on the door panel 20. However, in this case, the retainer 21 and the door panel 2
In order to ensure a sealing property between 0 and 0, a sealant 22 is applied to those connecting portions. Therefore, there is a problem that the weather strip 60 and the sealant 22 interfere with each other, and it is not possible to stabilize the sealing performance of the portion. Further, at the terminal end of the retainer 21, a step is formed with the door panel 20 by the thickness of the retainer 21, so that the sealing property of that portion is also reduced. Therefore, the door panel 20
The retainer 21 is not always necessary in consideration of the sealing performance between the web and the weather strip 60.

As a means for attaching the weather strip 60 to the door panel 20 instead of the retainer 21, there is a double-sided tape or a clip. However, in order to attach the weather strip 60 to the door panel 20 by these means, it is necessary to stabilize the sealing property between the lower surface of the base 61 and the door panel 20.

[0004] In view of the above, a technique of providing a sealing member such as a highly foamed sponge material on the lower surface of the base of the weather strip has been proposed. Here, the specific gravity of the highly foamed sponge material is usually 0.1 to 0.3. This sealing member
Usually, in the extruded portion of the weather strip, the extruded portion is integrally extruded together with the extruded portion, and in the molded portion, a separate highly foamed sponge material is attached by post-processing.
Therefore, a seam of the seal member is formed at a continuous portion between the extrusion molding portion and the mold molding portion, and the seal is broken at that portion, and stable sealing performance cannot be secured.

[0005]

The problem to be solved is that the conventional retainerless weather strip is
That is, the seal member provided on the lower surface of the base is broken at a continuous portion between the extruded portion and the molded portion, and a stable sealing property cannot be secured.

[0006]

A description will be given with reference to FIGS. 1 and 3 to 6. The retainerless weatherstrip according to the present invention is a weatherstrip that is attached to a door panel 20 of an automobile by an attachment means other than a retainer, and includes a highly foamed sponge material 13 along a vehicle outer edge on a lower surface of a base 11 of an extruded portion 14. It is provided integrally by coextrusion molding, and a predetermined portion of the extruded portion 14 is
And the high foamed sponge material 13 is formed, and the cutout portion 16 formed as the cutout is used as a molded portion 15 by molding, and the base 11 of the extruded portion 14 and the high foamed sponge material 13 are formed.
Is extended to the molded portion 15.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A retainerless weather strip 10 according to the present embodiment is a door panel 20 of an automobile.
Is attached by a clip 18 as attachment means other than the retainer. This weather strip 1
Reference numeral 0 denotes a high-foaming sponge material (for example, a single-foam high-foaming sponge material made of EPDM) integrally formed by co-extrusion along the outer edge of the lower surface of the base 11 of the extruded portion 14 formed by extrusion. Provided.

Then, a predetermined portion (a portion to be a corner portion) of the extruded portion 14 is cut out with the base portion 11 and the highly foamed sponge material 13 remaining, and the cut-out portion 1 is formed.
Reference numeral 6 denotes a molded portion 15 having a predetermined shape by molding. By doing so, the base 1 of the extruded portion 14
1 and the highly foamed sponge material 13 are extended to the molding portion 15,
It is provided continuously and continuously on the lower surface of the base 11.

This retainerless weather strip 1
The operation of 0 will be described. This weather strip 10
Since the base 11 of the extruded part 14 is extended as it is even at the corner part (mold forming part 15), the base part 11
The high-foamed sponge material 13 provided on the lower surface of the extruded portion 14 is continuously located without being cut even at a continuous portion between the extruded portion 14 and the molded portion 15. As a result, the lower surface of the weather strip 10 and the door panel 20 achieve a seamless seal over the entire area.

Although the retainerless weather strip 10 of the present invention is formed by cutting out a predetermined portion of the extruded portion 14, it is considered that the molding cost is increased. Compared to the work of attaching to the base 11 of the molded part 15 by processing,
Actually it will be lower.

[0011] The weather strip 10 according to the present embodiment.
Has a core hole 17 for taking out the core used in the molding at the indoor side 40 of the hollow seal portion 12. Accordingly, it is not necessary to form a drain hole in the vehicle outside 50 or the like, and the sealing property of the highly foamed sponge material 13 can be kept good.

The hollow seal portion 12 of the weather strip 10 is of a so-called compression type in which the hollow seal portion 12 is crushed at a curved portion of the body panel 30 as shown by a virtual line in FIG. It is inconspicuous even from the indoor side 40 and has an excellent appearance.
Since the compression type is used, a downward force acts on the hollow seal portion 12, so that the core hole 17 can be closed by spotting with, for example, a cyanoacrylate-based instant adhesive. Further, in the present embodiment, the example in which the center hole 17 is provided on the indoor side 40 of the hollow seal portion 12 is shown, but the base 11 and the seal lip 19 on the outdoor side 50 are shown.
May be provided at the boundary portion of.

Although the weather strip 10 in this embodiment is attached to the door panel 20 by the clip 18, any other attachment means other than the retainer may be used. For example, the weather strip 10 may be attached with a double-sided tape.

[0014]

According to the present invention, the corner portion (molded portion 1)
Also in 5), since the base 11 of the extruded portion 14 is extended as it is, the highly foamed sponge material 13 provided on the lower surface of the base 11 is interrupted even in the continuous portion between the extruded portion 14 and the molded portion 15. It can be continuously arranged without any. Thereby, the sealing property between the lower surface of the weather strip 10 and the door panel 20 can be made stable without interruption over the entire area.

Although a predetermined portion of the extruded portion 14 is cut out, the molding cost is reduced as compared with the prior art in consideration of the attachment of the highly foamed sponge material 13 and the double-sided tape 18. be able to.

[Brief description of the drawings]

FIG. 1 is a side view showing an automobile to which a weather strip is attached.

FIG. 2 is a sectional view taken along line AA in FIG. 1, showing a conventional example.

FIG. 3 is a partial perspective view showing a state in which a cutout portion is formed in an extruded portion in the present invention.

FIG. 4 is a partial perspective view showing a state where a molded portion formed by molding is integrated with the cutout portion shown in FIG. 3;

FIG. 5 is a sectional view taken along line BB in FIG. 4;

6 is a sectional view taken along line CC in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Retainer-less weather strip 11 Base 12 Hollow seal part 13 High foaming sponge material 14 Extrusion part 15 Mold part 16 Notch part 17 Center hole 18 Double-sided tape 19 Seal lip 20 Door panel 21 Retainer 22 Sealant 30 Body panel 40 Indoor side 50 Car outside 60 Weather strip 61 Base

Claims (1)

[Claims] 1. A weatherstrip which is attached to a door panel (20) of an automobile by an attachment means other than a retainer, wherein a highly foamed sponge material is formed along a vehicle outer edge on a lower surface of a base (11) of an extruded portion (14). 13) are integrally provided by co-extrusion molding, and a predetermined portion of the extruded portion (14) is cut out by leaving a base portion (11) and a highly foamed sponge material (13). A retainerless weather strip formed by integrating a molded part (15) by molding into a base and extending the base (11) of the extruded part (14) and the highly foamed sponge material (13) to the molded part (15). .