JP3213668B2 - Opening weather strip for automobiles - Google Patents

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 automobile door opening.

[0002]

2. Description of the Related Art As shown in FIG. 1A, an opening weather strip 1 is mounted around a door opening of an automobile. The opening weather strip (hereinafter simply referred to as a weather strip) 1 forms a design around the door opening and a seal around the door when the door is closed. As shown in FIG. 7, an opening trim (hereinafter simply referred to as "trim") 2 and an outer periphery and a door sash 5 of the door panel 5 [FIG.
0 (FIG. 1 (A)) is provided with a hollow seal portion 3 to be pressed. In the drawings, reference numeral 8 denotes a scuff plate at the lower edge of the door opening, and reference numeral 9 denotes a ceiling trim.

When the weather strip 1 is mounted, a seal portion 3 is formed at a corner portion, particularly at a corner portion 10 which is bent at right angles around the upper end of the center pillar 6.
Wrinkles are generated on the inner diameter side of the bend . Wrinkling is not preferable in terms of sealing performance. Therefore, as a countermeasure for preventing the generation of wrinkles, as shown in FIG. 2, a countermeasure for inserting a pad 4A having a cross section which is flexible and substantially fills the inside of the hollow is inserted into a corner portion of the seal portion 3. The pad 4A is generally pressure-fed by air from the terminal opening of the seal portion 3 (actually open flat 4-113).
950).

[0004]

However, the pad 4A
Is filled and inserted, there is a problem that the compressive bending load of the seal portion 3 when pressed by the door sash increases and the door closing force increases. Therefore, it is conceivable to make the pad 4A hollow in order to reduce the reaction force, but it becomes difficult to feed the air by air.

SUMMARY OF THE INVENTION In view of the above circumstances, it is an object of the present invention to provide a weather strip in which a pad is inserted into a seal portion without increasing the door closing force by the pad and in which the pad can be easily inserted. It was done 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 surface 41 on the vehicle inner side is opposed to the vehicle with a gap 43 therebetween, and a lip-shaped leg portion 42 is formed on the side surface 41, the tip of which contacts the side surface 21 on the vehicle outer side of the trim 2 .

The leg 42 extends in the inclined direction with respect to the side surface 21 on the outside of the vehicle, and the width of the gap 43 is determined by the thickness of the leg 42 when the door is closed and the seal is pushed in. It is set to have a width corresponding to the height.

[0008]

The insertion of the pad prevents the seal portion from wrinkling. Since the pressing force against the seal portion 3 when the door is closed is absorbed by the bending of the leg portion 42, the door closing force does not increase. When the pad 4 is inserted, the compressed air passes through the gap 43, but most of the hollow section of the seal portion 3 is closed by the pad 4.
The gap 43 is a part of the seal portion 3 and the pad 4 can be pumped without any trouble.

If the width of the gap 43 between the trim 2 and the opposing surfaces 21 and 41 of the pad 4 is set as described above, the leg 42 is completely sandwiched between the opposing surfaces 21 and 41 when the door closing operation is completed. It becomes a state, therefore the door closing force is not increased, and the sealing properties are also exhibited satisfactorily.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in FIG. 1, a weatherstrip 1 is mounted on the entire periphery of the vehicle door except for the lower edge of the door opening. A scuff plate 8 is attached to the lower edge.

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

The pad 4 inserted into the seal portion 3 is
Made of PDM sponge rubber, extruded product is approximately 60mm
It is cut to a length of about 80 mm. Pad 4
The side surface 41 of the main body having a D-shaped cross section whose peripheral surface is 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.
And two lip-shaped leg portions 42 are extended. When inserted into the seal portion 3, there is a gap 43 between the side surface 41 and the outer side surface 21 of the trim 2, and the leg portion 42 extends in an inclined direction with respect to the outer side surface 21. As a result, the tip comes into contact with the side surface 21.

Prior to attaching the weather strip 1 to the vehicle body, the pad 4 is opened by air from the terminal opening of the seal portion 3 by a corner portion 10.

FIG. 1 (A) is pumped to a location where it should be. And
As shown in FIG. 1B, the weather strip 1 is attached by pushing the trim 2 into a flange 7 along the door opening edge where 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 inserted, almost no wrinkles are generated.

When the door is closed, a door sash 50 is pressed against the seal portion 3 of the corner portion 10. The leg 42 is bent by this pressing, and the pressing force is absorbed by this, so that the door closing force hardly increases.

Opposing surfaces 42, 21 of pad 4 and trim 2
The width of the gap 43 between them is set on the basis of a width corresponding to the thickness of the leg 42 when the door is closed. At the time of the door closing operation, the door slightly overstrokes to the normal 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 by pushing the door sash 50, and when the door reaches the normal closed position, the leg portion 42 falls down and After the pad 4 is slightly compressed due to the overstroke, the door returns to the normal 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 closed position, substantially the same reaction force acts on the door sash as when the pad is filled in the seal portion 3. Therefore, the sealing property is good.

In the above embodiment, a rubber sponge was used as the pad. However, a soft rubber or a solid material of a synthetic resin may be used. In this case, the thickness of the legs is smaller than that of the sponge. To bend easily. The thickness of the leg varies depending on the number and material of the leg, but in the case of a sponge, 1.
About 0 to 1.8 mm, 0.8 to 1.5 in the case of the above solid material
mm.

[0017]

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

[Brief description of the drawings]

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

FIG. 2 shows a conventional opening weather strip.
It is sectional drawing in the position along CC line 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

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Hiroshi Ohashi 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (56) References JP-A-4-113950 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60R 13/06

Claims (1)

(57) [Claims] 1. An opening weather strip having a hollow sealing portion (3) on the outer side of an opening trim (2) mounted around a door opening of an automobile, the peripheral edge of the door being pressed, In the opening weather strip (1) in which the pad (4) is inserted into the seal part (3) hollow of the corner part (10) ,
(3) Inside of the opening trim (2) outside the car
Pad (4) facing (21) with a gap (43 )
The tip of the outer side (41) is the outer side
A lip-shaped leg (42) abutting on (21) is protruded ,
The vehicle with the opening trim (2) on the leg (42)
Project in the direction of inclination to the outside side (21), or
Opening trim (2) with the outer side surface (21)
The gap width between the pad (4) and the inner side surface (41) is
A) In the pressed state when closed, the thickness of the leg (42)
An opening weather strip for an automobile, wherein the opening weather strip is set to have a corresponding width .