JPH07291053A - Opening weather strip for automobile - Google Patents

Abstract

PURPOSE:To prevent increase in door opening force due to a pad in an opening weather strip having the pad inserted into a hollow seal part in a corner part. CONSTITUTION:To the corner part of a hollowed seal part 3 formed on the outside side surface 21 of an opening trim 2 is inserted a pad 4 having an inside side surface 41 opposed to the outside side part 21 of the trim 2 with a space 43 and a leg part 42 whose top end in contact with the outside side surface 21 of the trim 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening weather strip mounted around an opening of an automobile door.

[0002]

2. Description of the Related Art As shown in FIG. 1 (A), an opening weather strip 1 is mounted around a door opening of an automobile. The opening weatherstrip (hereinafter, simply referred to as a weatherstrip) 1 serves as a seal around the door opening and the design around the door opening, and as shown in FIG. 2, a flange protruding to the edge of the door opening. 7, an opening trim (hereinafter simply referred to as "trim") 2 that is assembled to the outer periphery of the door panel 5 [FIG. 1 (A)] and the door sash 5
0 [FIG. 1 (A)] is provided with a hollow seal portion 3. In the figure, 8 is a scuff plate at the lower edge of the door opening, and 9 is a ceiling trim.

By the way, when the weather strip 1 is mounted, a wrinkle is generated in the seal portion 3 on the inner diameter side of the bend, particularly in the corner portion 10 which is bent at a right angle around the upper end of the center pillar 6. The generation of wrinkles is not preferable in terms of sealing performance. Therefore, as a measure for preventing the generation of wrinkles, as shown in FIG. 2, a measure is taken to insert a pad 4A having a cross-sectional shape that is flexible and substantially fills the inside of the hollow into the corner portion of the seal portion 3. The pad 4A is generally pressure-fed with air from the terminal opening of the seal portion 3 (actual opening flat 4-1).
13950).

[0004]

However, the pad 4A
However, there is a problem that the compressive bending load of the seal portion 3 when it is pressed by the door sash increases and the door closing force increases. Therefore, in order to reduce the reaction force, it may be considered that the pad 4A has a hollow shape, but it becomes difficult to carry out pressure feeding with air.

In view of the above situation, it is an object of the present invention to provide a weather strip in which a pad is inserted into a seal portion, the door closing force is not increased by the pad, and the pad can be easily inserted. It was made as.

[0006]

According to the present invention, as shown in FIG. 1, a pad 4 inserted into a hollow seal portion 3 of a weather strip 1 faces a side surface 21 of a trim 2 on the vehicle exterior side. The side surfaces 41 on the vehicle inner side are opposed to each other with a gap 43, and a lip-shaped leg portion 42 whose tip abuts the side surface 21 on the vehicle outer side of the trim 2 is formed on the side surface 41.

The leg portion 42 extends in an inclined direction with respect to the side surface 21 on the vehicle outer side, and the width of the gap 43 is such that when the door is closed and the seal portion is pushed in, the thickness of the leg portion 42 is increased. It is desirable to set the width to correspond to the width.

[0008]

The insertion of the pad 4 prevents the seal portion 3 from wrinkling. The pressing force to the seal portion 3 at the time of closing the door is absorbed by the bending of the leg portion 42, so the door closing force does not increase. When the pad 4 is inserted, the pressure-fed air passes through the gap 43, but the gap 43 is a part of the closed cross section, and the pad 4 can be pressure-fed without any trouble.

If the gap width between the facing surfaces 21 and 41 of the trim 2 and the pad 4 is set as described above, the leg portion 42 is completely sandwiched between the facing surfaces 21 and 41 when the door closing operation is completed. Therefore, the door closing force is not increased, and the seal-made product is also excellently exhibited.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in FIG. 1, a weather strip 1 is attached to the entire circumference of a vehicle door opening, leaving a lower edge. A scuff plate 8 is attached to the lower edge.

The weather strip 1 is provided with a trim 2 having a U-shaped cross section and a hollow seal portion 3 formed on a side surface 21 on the vehicle outer side. A core metal 20 is embedded in the trim 2,
The holding lip 22 extends from the inner facing surface. The trim 2 is made of EPDM solid rubber, and the seal part 3 is E
The weather strip 1 is made of PDM sponge rubber and is integrally extruded.

The pad 4 inserted in the seal portion 3 is E
It is made of PDM sponge rubber and has an extrusion molded body of approximately 60 mm.
It is cut into a length of about 80 mm. Pad 4
Is a side surface 41 of a main body having a D-shaped cross section having a curved outer side surface along the inner surface of the seal portion 3 and a flat inner side surface 41 facing the outer side surface 21 of the trim 2 as a peripheral surface.
Two lip-shaped leg portions 42 extend from the above. When inserted into the seal portion 3, there is a gap 43 between the side surface 41 and the vehicle outer side surface 21 of the trim 2, and the leg portion 42 extends in the inclination direction with respect to the vehicle outer side surface 21. The tip is brought into contact with the side surface 21.

Prior to mounting the weather strip 1 on the vehicle body, the pad 4 is provided with air from the end opening of the seal portion 3 by means of air.

[Fig. 1 (A)] is pressure fed to a location. And
As shown in FIG. 1B, the weather strip 1 is attached by pushing the trim 2 into the flange 7 along the door opening edge to which the edges of the inner and outer panels 71 and 72 are joined. Since the pad 4 is pressed from the inside in the seal portion 3 of the corner portion 10 of the weather strip 1 in which the pad 4 is placed, wrinkles hardly occur.

When the door is closed, the door sash 50 is pressed against the seal portion 3 of the corner portion 10. This pressing causes the leg portion 42 to bend, and the pressing force is absorbed thereby, so that the door closing force hardly increases.

Opposing surfaces 42 and 21 of the pad 4 and the trim 2
The width of the gap 43 is set based on the width corresponding to the thickness of the leg portion 42 when the door is closed. During the door closing operation, the door slightly overstrokes and becomes a regular closed state. Therefore, if the gap 43 is set as described above, at the time of the door closing operation, the leg portion 42 is bent at the corner portion 10 due to the pushing of the door sash 50, and when the door reaches the regular closed position, the leg portion 42 is collapsed and the above-mentioned both are closed. The door 4 is almost completely sandwiched between the facing surfaces 42 and 21, and the pad 4 is slightly compressed by the overstroke, and then the door returns to the regular closed position.
Therefore, the door closing force is hardly increased by the pad 4 in the process of closing the door, and in the door closing position, almost the same reaction force as when the pad is filled in the seal portion 3 acts on the door sash. Therefore, the sealing property is good.

In the above embodiment, the rubber sponge is used as the pad, but a soft rubber or a solid material of synthetic resin may be used. In this case, the thickness of the leg is thinner than that of the sponge. And make it easier to bend. The thickness of the legs varies depending on the number of legs, the material, etc.
0 to 1.8 mm, 0.8 to 1.5 for the above solid materials
It is about mm.

[0017]

According to the present invention, the door closing force does not increase even if the pad is inserted into the hollow seal portion of the corner portion of the weather strip mounted around the door opening of the automobile. Further, the pad can be easily fed by air to the corner position of the seal portion.

[Brief description of drawings]

FIG. 1 (A) is a side view of an automobile in which an opening weather strip is mounted around a door opening, FIG.
FIG. 1B is a sectional view of the opening weather strip of the present invention at a position along the line CC of FIG.

FIG. 2 is a view of a conventional opening weatherstrip.
It is sectional drawing in the position which follows the CC line | wire of (A).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Opening weather strip 10 Corner part 2 Trim 21 Outer side surface 3 Seal part 4 Pad of the present invention 41 Inner side surface 42 Leg part 43 Gap

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaaki Morikawa 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Co., Ltd. (72) Inventor Hiroshi Ohashi 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Co., Ltd.

Claims (2)

[Claims] 1. An opening weather strip having a hollow seal portion for pressing a peripheral edge of a door on an outer side surface of an opening trim mounted around a door opening of an automobile, wherein the seal portion is hollow at a corner portion. In the opening weather strip with the pad inserted inside,
An automobile characterized in that a lip-shaped leg portion whose tip abuts against the outer side surface of the vehicle is provided on the inner side surface of the pad facing the outer side surface of the opening trim in the seal portion with a gap therebetween. Opening weather strip for. 2. The leg portion is made to project in an inclined direction with respect to the side surface on the vehicle outer side of the opening trim, and the gap width between the side surface on the vehicle outer side and the side surface on the vehicle inner side of the pad is pressed when the door is closed. The opening weather strip for an automobile according to claim 1, wherein the width is set to correspond to the thickness of the leg portion in the state.