JP2531311B2 - Automotive weather strip - Google Patents

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 automobiles, and more particularly to a weather strip having a molding portion.

[0002]

2. Description of the Related Art Taking an automobile door as an example, as shown in FIG. 8, the door frame 1 extends along the inner periphery of the door frame 1.
A weather strip (glass run) 5 that seals between the door and the outer periphery of the door glass 2 is attached. And
As shown in FIG. 9, the corner portion A is formed by extrusion molding materials 5A and 5B.
It is formed by the mold forming part 5C that connects the terminals of the above in a corner shape.

The weather strip 5 has a U-shaped cross section, and as shown in FIG. 9, it is fitted into a retainer having a substantially U-shaped cross section formed on the inner peripheral side of the door frame 2 (FIG. 8). ing.

Engaging lips 51, which engage with the retainer and serve as a retainer, extend obliquely outwardly on both side surfaces of the extruded materials 5A and 5B. The engagement lip 51 is extruded integrally with the main body of the extruded material 5A, 5B. Engaging lips 52 that are continuous with the engaging lips 51 are also formed on both side surfaces of the mold forming portion 5C.

To connect the extrusion-molded materials 5A and 5B, the extrusion-molded materials 5A and 5B are set in the mold so that both ends of the cavity of the mold for molding the mold-molding portion 5C are exposed, and the mold is molded into the cavity. This is done by injecting the material. At this time, since it is difficult to form the engaging lip extending in the direction of the undercut in the molded portion 5C, the end 511 of the engaging lip 51 of the extruded materials 5A and 5B is attached to the side surface of the extruded material. 8 and 9, the engagement lip 52 of the mold forming portion 5C is formed so as to extend the end 511 of the engagement lip 51 that is formed in a crushed shape.
Had formed. Therefore, the conventional mold forming portion 5C is integrally formed with the crushed engagement lip 51 and the engagement lip 52 having the same cross-sectional shape (actual opening 2-30725).
issue).

[0006]

By the way, in the conventional weather strip, when the door glass 2 is opened and closed, the door glass 2 retreats from the weather strip 5 and enters the corner mold forming portion. 5C is the door glass 2
Therefore, there is a problem in that it moves with respect to the retainer 3 and is displaced with respect to the retainer 3, or it is difficult to perform accurate positioning when the mold forming portion 5C is assembled to the retainer 3.

[0007] Therefore, an object of the present invention is to provide a weather strip which does not cause the above-mentioned deviation in the molding portion and which can be easily positioned at the time of assembly.

[0008]

SUMMARY OF THE INVENTION According to the present invention, the occurrence of the above-mentioned deviation and the difficulty of positioning are caused by the fact that the engaging lip 52 of the mold forming portion 5C has the same cross-sectional shape as the crushed lip, so It was made paying attention to the fact that it is caused by insufficient overhang and insufficient engagement with the retainer.

The weather strip of the present invention, as illustrated in FIG. 1, therefore, has the engaging lip 52 of the molding portion 5C.
At the connecting portion 521 of the extruded material 5A, 5B with the engaging lip 51, the end 51 of the engaging lip 51 is crushed.
1 and a cross-sectional shape having substantially the same cross-sectional shape as that of the engaging lip 51 which is not crushed in the other portion 522.

[0010]

EXAMPLE In the weather strip 5 shown in FIG. 1, the ends of the extruded materials 5A and 5B are connected to each other in the shape of a corner by a molding part 5C.

The extruded materials 5A and 5B have substantially the same cross-sectional shape, and seal lips 53 extend from both open ends of the main body having a substantially U-shaped cross-section, and from opposite side end parts. The engaging lip 51 is extended respectively. The main body portion including the seal lip 53 of the molded portion 5C has substantially the same cross-sectional shape as that of the extruded materials 5A and 5B. An engagement lip 52, which is connected to the engagement lip 51 and extends in the extension direction of the engagement lip 51, is formed on the side surface of the mold forming portion 5C.

The weather strip 5 is, as shown in FIG.
The inside of the door frame 1 is retained by being fitted to the retainer 3 formed by the door frame 1 and itself.
The engaging lip 51 of the extruded material 5A, 5B extends obliquely outward and has a length at which the tip is engaged with the retainer 2. However, the end portion 511 (FIG. 1) of the engagement lip 51 is in a crushed shape pressed against the side surfaces of the extrusion-molded materials 5A and 5B.

The engaging lip 52 of the molded portion 5C is shown in FIG. 1 at a portion 521 where the engaging lip 51 is connected to the terminal 511.
As shown in FIG. 3 and FIG. 3, it has a cross-sectional shape that extends the end 511 of the crushed engagement lip 51. Then, in the further extending portion 522, as shown in FIG. 4, the outer surface and the main body portion are projected obliquely outward with the same shape as that of the general portion of the engaging lip 51 (FIG. 2) whose outer surface is not crushed. It has a mountain-shaped cross-sectional shape with a space between the side surface and the side surface. The engagement lip 52 is integrally molded at the same time when the molding portion 5C is molded.

However, in the molding portion 5C of the weather strip 5 of this embodiment, the engaging lip 52 is formed by the extruded material 5.
Similar to the engaging lips 51 of A and 5B, it is sufficiently overhanging so that the tip end thereof engages with the retainer 3 and has a holding force.

FIGS. 5 to 7 show another embodiment of the present invention, in which a weather strip extruded material 6A is provided on the front side of a center pillar 7 of an automobile by a retainer 3 fixed to the center pillar 7. It is held and the rear edge of the front door glass 2 abuts. The upper end of this extruded material 6A is connected to the rear end of another extruded material (not shown) attached along the roof side portion of the door opening of the automobile body by a corner-shaped molding portion 6C. This extruded material 6
An engaging lip 61 that engages with the retainer 3 is formed at one end of the base portion of A, and an engaging lip 62 is also formed at an extension position of the engaging lip 61 in the mold forming portion 6C.

The invention also applies to this type of weatherstrip. That is, the upper end of the engagement lip 61 of the extruded material 6A has a crushed shape, and the engagement lip 62 of the mold molding portion 6C has a connection portion 62 with the crushed engagement lip 61.
In FIG. 1, as shown in FIG. 6, it is formed in the same crushed shape, and the extending portion 622 has a shape protruding like the engaging lip 61 in the non-crushed state as shown in FIG. 7.

[0017]

The mold forming portion of the weather strip of the present invention is firmly positioned when assembled to the retainer by engaging with the retainer and forming the engaging lip having a holding force. In addition, it is possible to prevent misalignment when opening and closing the door glass. INDUSTRIAL APPLICABILITY The present invention is particularly effective when applied to the die-molding corner portion of a weatherstrip, which is difficult to be accurately positioned at the time of assembling and is likely to be displaced due to opening and closing of the door glass.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a weather strip according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

3 is a sectional view taken along line III-III in FIG.

4 is a sectional view taken along line IV-IV in FIG.

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

FIG. 6 is a cross-sectional view of a connection portion of a die-molded portion of the other weather strip with an extruded material.

FIG. 7 is a cross-sectional view of a general portion of a mold forming portion of another weather strip described above.

FIG. 8 is a front view of an automobile door to which a weather strip is attached.

FIG. 9 is a view corresponding to FIG. 1 of a conventional weather strip.

[Explanation of symbols]

 1 Door Frame 2 Door Glass 3 Retainer 5, 6 Weather Strip 5A, 5B, 6A Extrusion Molded Material 5C, 6C Mold Molding Part 51, 61 Extrusion Molding Material Engaging Lip 52, 62 Mold Molding Part Engaging Lip

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location // B29L 31:58 B60J 5/04 M

Claims (1)

(57) [Claims] 1. A weather strip formed by connecting extrusion-molded materials by molding, which is engaged with a retainer for holding the weather-strip extending obliquely outward on the side surfaces of the extrusion-molded material and the molding portion. In a weather strip for an automobile in which a plurality of engaging lips are formed, the engaging lip of the molded portion is crushed to the side surface at the connecting portion with the end of the engaging lip of the extruded material. The cross-section was formed to be almost the same as the end of the mating lip, and the other parts were formed to have a cross-section that was almost the same as the outer shape of the general part of the engaging lip of the extruded material and filled with the gaps between the side surfaces. A weather strip for automobiles, which is characterized in that