JP2001219747A - Sealing structure of door weather strip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealing structure of a door weather strip capable of providing a stable sealing function due to double sealing even if unevenness occurs when a door is built. SOLUTION: In this sealing structure in a lower part of a belt line LB of the door weather strip 3 provided with a mounting basic part 4 attached to a peripheral fringe of the door 1, a hollow seal part 5 molded integrally with the mounting basic part 4 to come into elastic contact with a body panel 20 when the door is closed, and an outer lip part 16 molded integrally with the mounting basic part 4 and having a tonguelike cross section, a recessed part 16a is formed outside a vehicle compartment in a root part of the outer lip part 16, a horizontal face 20a is formed on the body panel 20, the horizontal face 20a is brought into elastic contact with the inside of the vechile compartment at a tip of the outer lip part 16 to elastically deform the outer lip part 16 outward of the vehicle compartment, and the body panel 20 is set in such a way that a position of the horizontal face 20a in elastic contact with the outer lip part 16 is close to the inside of the vehicle compartment by a predetermined horizontal distance L from the outside of the vehicle compartment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing structure of a door weather strip which is attached to a peripheral edge of a door of an automobile and seals a gap between a door and a body panel.

[0002]

2. Description of the Related Art As shown in FIGS. 3 and 4, a door weather strip 3 for sealing a gap between a door 1 and a body panel 2 when the door is closed is attached to a periphery of a door 1 of an automobile. FIG. 4 shows an enlarged cross section taken along line AA of FIG.

The door weather strip 3 includes a mounting base 4 mounted along the periphery of the door 1, a hollow seal portion 5 integrally formed with the mounting base 4 and having a hollow cross section, And an extruded door weatherstrip 3 formed integrally with the mounting base 4 and having a tongue-shaped outer lip 6 in section.
Are integrally connected by molding at the upper corner portion on the rear side.

[0004]

In such a door weather strip 3, above the belt line BL, when the door 1 is closed, the hollow seal portion 5 elastically contacts the door opening edge of the body panel 2, and Hollow seal part 5
The outer lip portion 6 located on the peripheral edge of the door 1 in parallel with the body panel 2 also elastically contacts the body panel 2.

[0005] However, below the belt line BL, as shown in FIG. 4, the seal structure is such that only the hollow seal portion 5 elastically contacts the body panel 2 when the door 1 is closed. According to this, there is a problem that a sufficient sound insulation effect cannot be obtained because a double seal cannot be achieved by the hollow seal portion 5 and the outer lip portion 6.

On the other hand, an outer lip portion 6 is made to elastically contact the body panel 2 when the door 1 is closed. However, as shown in FIG. The tip of the lip 6 is the body panel 2
The seal was separated from the seal, and the sealing function could not be exhibited stably.

SUMMARY OF THE INVENTION An object of the present invention is to provide a sealing structure for a door weather strip which can exhibit a stable sealing function by a double seal even when the door is scattered when being assembled.

[0008]

In order to achieve the above object, a sealing structure for a door weather strip according to the present invention comprises a mounting base (4) mounted on a periphery of a door (1);
A hollow seal portion (5) integrally formed with the mounting base (4) and elastically contacting the body panel (20) when the door (1) is closed; and a mounting base (4) at a position outside the vehicle compartment from the hollow seal portion (5). A door weatherstrip (3) having a tongue-shaped outer lip (16) integrally formed with
A seal structure at least at a lower portion of the belt line (BL), wherein a concave portion (16a) is formed at the base of the outer lip portion (16) outside the vehicle compartment, and a body panel (2) is formed.
0), a horizontal plane (20a) is formed, and when the door (1) is closed, the horizontal plane (20a) is elastically contacted with the inside of the front passenger compartment of the outer lip section (16) so that the outer lip section (16) faces the outside of the passenger compartment. Elastically deformed and the outer lip (1
The body panel (20) is set so that the position of the horizontal plane (20a) where the panel (6) makes elastic contact with is closer to the vehicle interior by a predetermined horizontal distance (L) from the outside of the vehicle. .

In the above invention, the outer lip portion (16)
The outer lip portion (16) is elastically deformed to the outside of the cabin by forming a concave portion (16a) outside the cabin outside of the base portion of the outer lip portion (16). By reducing the thickness, the outer lip portion (16) may be easily elastically deformed to the outside of the vehicle compartment.

Here, the predetermined horizontal distance is a distance that does not cause the seal to be broken even if the elastic contact position of the outer lip portion is slightly shifted along the horizontal plane due to variation in installation.

The symbols in parentheses above correspond to the symbols described in the drawings and the embodiments of the invention described later.

According to the present invention, there is provided a seal structure at a lower part of a belt line, wherein an outer lip portion is formed by reducing a thickness of a concave portion or a root portion formed outside a vehicle compartment at a root portion.
When it comes into contact with the body panel when the door is closed, it is deformed to the outside of the cabin. As a result, the door closing performance does not particularly deteriorate. Further, since the outer lip portion is elastically contacted with the horizontal plane formed on the body panel by a predetermined horizontal distance from the outside of the cabin to the inside of the cabin, the outer lip portion may be out of contact with the horizontal plane due to variation in door installation. Even if the elastic contact position of the lip portion is slightly shifted to the outside of the vehicle compartment where the horizontal plane extends, the seal does not break.

[0013]

1 and 2 show a seal structure of a door weather strip according to an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 shows a seal structure of a door weather strip according to an embodiment of the present invention.
FIG. 2 shows a cross section in a state where the door 1 is opened, and FIG.
FIG. 4 is an enlarged cross-sectional view taken along line AA of FIG. 3, showing a closed state. The same parts as those in the conventional example are denoted by the same reference numerals.

The seal structure according to the embodiment of the present invention is a seal structure below the belt line BL, and the door weather strip 3 constituting the seal structure is different from the conventional example (shown in FIG. 4 or FIG. 5). Similarly, a mounting base 4 that is mounted along the periphery of the door 1, a hollow sealing section 5 that is integrally formed with the mounting base 4, and that has a hollow cross section that resiliently contacts the body panel 20 when the door 1 is closed, and the hollow seal. Part 5
An outer lip portion 16 having a tongue-shaped cross section integrally formed with the mounting base portion 4 similarly to the hollow seal portion 5 at a position outside the vehicle compartment.

In particular, what differs from the conventional example is the configuration of the outer lip portion 16 and the configuration of the body panel 20. That is, a notch recess 16a is formed at the base of the outer lip portion 16 outside the vehicle compartment, and when the body panel 20 is elastically contacted with the front end portion of the outer lip portion 16 on the vehicle interior side, the outer lip portion 16 is formed. Are easily elastically deformed to the outside of the cabin.

The body panel 20 has a horizontal surface 20a.
The position of the body panel 20 with respect to the outer lip portion 16 is set so that when the door 1 is closed, the horizontal surface 20a is elastically contacted with the front interior side of the outer lip portion 16. In addition, when the door 1 is closed, the body 20 is positioned such that the position of the horizontal plane 20a at which the front end of the outer lip portion 16 elastically contacts the interior of the vehicle compartment is shifted by a predetermined horizontal distance L from the outside of the vehicle compartment toward the interior of the vehicle compartment. The panel 20 is set.

That is, when the door 1 is closed, a horizontal plane extending from the vehicle interior to the vehicle exterior to elastically deform the outer lip 16 to the vehicle exterior by elastically deforming the outer lip 16 toward the vehicle exterior by elastically contacting the front interior side of the outer lip 16 with the plane. 20a is formed on the body panel 20, whereby the outer lip portion 1 with respect to the horizontal
The horizontal plane 20a extends a predetermined horizontal distance L outside the vehicle interior from the elastic contact position so that the seal does not break even if the elastic contact position of 6 slightly shifts. Here,
The predetermined horizontal distance L is a distance that does not cause the seal to break even if the elastic contact position of the outer lip portion 16 is slightly shifted along the horizontal plane 20a due to variation in installation.

The seal structure above the belt line BL is such that the hollow seal portion 5 and the outer lip portion 16 elastically contact the body panel 20 when the door 1 is closed as usual.

In the embodiment of the present invention, the concave portion 16a is formed at the base of the outer lip portion 16 outside the cabin, and the outer lip portion 16 is elastically deformed to the outside of the cabin. By reducing the thickness of the base portion of the outer lip portion 16, the outer lip portion 16 may be easily elastically deformed to the outside of the vehicle compartment.

[0020]

As described above, according to the present invention, when the door is closed, the outer lip portion is deformed to the outside of the vehicle compartment when it comes into contact with the body panel, and the outer lip portion with respect to the horizontal plane formed on the body panel. Since the elastic contact position is located at a predetermined horizontal distance from the outside of the cabin to the interior of the cabin, the elastic contact position of the outer lip portion with respect to the horizontal surface due to variation in door installation may be outside the cabin where the horizontal surface extends. Even if it is slightly displaced, the breakage of the seal does not occur. Therefore, even when the door is closed, the double sealing by the hollow seal portion and the outer lip portion is reliably performed even at the lower portion of the belt line, so that a sufficient sound insulation effect can be obtained. Moreover, as described above, the outer lip portion is forcibly deformed to the outside of the vehicle compartment when it comes into contact with the body panel when the door is closed, so that the door closing performance does not particularly deteriorate.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a seal structure of a door weather strip according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG. 3, illustrating a sealing structure of the door weather strip according to the embodiment of the present invention.

FIG. 3 is an external perspective view of an automobile.

FIG. 4 is an enlarged cross-sectional view taken along line AA of FIG. 3 showing a sealing structure of a door weather strip according to a conventional example.

FIG. 5 is an enlarged cross-sectional view taken along line AA of FIG. 3, showing a sealing structure of a door weather strip according to another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door 2 Body panel 3 Door weather strip 4 Mounting base 5 Hollow seal part 6 Outer lip part 16 Outer lip part 16a Depression 20 Body panel 20a Horizontal plane L Horizontal distance BL Belt line DM Door mirror

Claims (2)

[Claims] 1. A mounting base attached to a peripheral edge of a door, a hollow seal formed integrally with the mounting base and resiliently contacting a body panel when the door is closed, and the mounting base at a position outside the vehicle compartment from the hollow seal. A door weatherstrip having an integrally formed outer lip portion having a tongue-shaped cross section,
A seal structure at least at a lower part of a belt line, wherein a concave portion is formed at a base portion of the outer lip portion outside the cabin, a horizontal surface is formed on the body panel, and the horizontal surface is formed by a front wheel of the outer lip portion when the door is closed. The outer lip portion is elastically deformed to the outside of the cabin by elastically contacting the inside of the cabin, and the position of the horizontal plane where the outer lip portion elastically contacts is set to a position closer to the inside of the cabin by a predetermined horizontal distance from the outside of the cabin. A door weatherstrip seal structure characterized by setting the body panel as follows. 2. A mounting base attached to the periphery of the door, a hollow seal formed integrally with the mounting base and elastically contacting the body panel when the door is closed, and the mounting base at a position outside the vehicle compartment from the hollow seal. A door weatherstrip having an integrally formed outer lip portion having a tongue-shaped cross section,
At least a seal structure at a lower part of a belt line, wherein a thickness of a base portion of the outer lip portion is reduced, and a horizontal surface is formed on the body panel, and the horizontal surface is closed at a front end of the outer lip portion when the door is closed. So that the outer lip portion is elastically deformed to the outside of the cabin, and the position of the horizontal plane where the outer lip portion is elastically contacted is shifted to the inside of the cabin by a predetermined horizontal distance from the outside of the cabin. A door weatherstrip seal structure with a body panel set.