JP3420053B2 - Car door seal structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal structure around an automobile door.

[0002]

2. Description of the Related Art In automobile doors, weather strips for maintaining airtightness inside and outside the vehicle are attached to both the door side and the vehicle body opening side. An outline of a conventional seal structure around the front door will be described with reference to FIG. The body side weather strip 100 attached to the periphery of the vehicle body side door opening is the front door 1
When 02 is closed, it abuts on the front door 102,
The front door 102 is sealed.

From the front pillar 118 to the rear pillar 12
The drip weather strip 104 mounted along the upper edge of the door opening on the vehicle body up to 0 is the front door 1
When 02 is closed, it abuts on the upper edge of the front door 102 and seals the gap with the front door 102. A lower end portion 106 of the drip weather strip 104 on the front side of the vehicle body is extended to the inside of the front fender 116.

The door weather strip 108 mounted along the lower peripheral edge of the front door 102 from the front edge of the front door 102 through the lower portion of the front door 102 to the rear edge of the front door 102 is used when the front door 102 is closed. The lower side door opening including the side sill 114 is in contact with the lower side of the vehicle body side opening to seal the door opening.

In such a seal structure around the front door 102, the air flowing along the front fender 116 and the front pillar 118 is located in front of the vehicle body of the door weather strip 108 when the vehicle runs at high speed. By passing between the front end portion 110 and the lower end portion 106 of the drip weather strip 104, which is located in front of the vehicle body, and flowing into a space formed between the drip weather strip 104 and the body side weather strip 100. , Wind noise was generated.

Therefore, the door weather strip 1 is used.
As shown in FIG. 16, a hollow seal portion 112 that abuts the lower end portion 106 of the drip weather strip 104 on the front side of the vehicle body, as shown in FIG.
Is integrally molded, and by this hollow seal portion 112,
The front weather strip 110 is closed between the door weather strip 108 and the drip weather strip 104, and a front fender 116 and a front pillar 118 are provided in a space between the drip weather strip 104 and the body side weather strip 100.
There is known a configuration in which air that flows along the flow path is prevented from flowing in to prevent the generation of wind noise (see, for example, JP-A-9-193660).

[0007]

However, since the hollow seal portion 112, which is integrally molded with the front end portion 110 of the door weather strip 108, has a hollow shape, securing a sufficient bending margin deteriorates the door closing performance. . Further, there is a problem that the mold splitting structure of the hollow seal portion 112 used for molding becomes complicated, workability deteriorates, and manufacturing cost rises.

[0008]

According to the invention as set forth in claim 1, the drip is mounted along the upper edge of the door opening on the vehicle body side, and the lower end portion in front of the vehicle body extends to the inside of the front fender. The door was closed at the front end of the front of the vehicle body, which was mounted along the weather strip and along the peripheral edge of the door, and was continuously and integrally molded into an extrusion molded part that consisted of a hollow seal part and a mounting base part. In this case, in the vehicle door seal structure having a door weather strip located near the lower end portion of the drip weather strip, a front end portion of the door weather strip,
In the longitudinal direction of the door weather strip, which is formed in substantially the same cross-sectional shape as the extruded portion, and in which the pair of gap lips of the same shape are brought into contact with the front door without any gap, to the attachment base portion at the front end portion. When the door is closed, a supporting wall is provided which projects along the orthogonal planes, and between the pair of gap lips, the supporting wall connecting the pair of gap lips to each other is provided along the longitudinal direction of the door weather strip. In addition, the seal portion of the front end portion is in contact with a vehicle body panel of the door opening portion, and the pair of gap lips is in contact with a side surface of the drip weather strip. The gap lip closes the space formed between the front end portion of the door weather strip and the drip weather strip, and prevents wind noise.

As a result, the mold splitting structure used for molding the front end portion of the door weather strip provided with the gap lip and the supporting wall becomes relatively simple, and the workability is improved and the cost is reduced. It will be possible. In addition, it is possible to prevent the door closing performance from deteriorating even if the clearance of the gap lip is sufficiently large.

According to a second aspect of the invention, the pair of gap lips are connected to each other by two thin plate-shaped support walls that are substantially orthogonal to each other.

According to the third aspect of the present invention, the pair of gap lips have a substantially V-shaped cross section in a plane along the longitudinal direction of the door weather strip, and are formed such that their concave portions face each other. It is characterized by This makes it easier for the gap lip to follow the deformation of the drip weather strip, and can easily close the space generated between the drip weather strip and the door weather strip.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail with reference to the drawings.

Around the front door 10 and the rear door 12 of the automobile shown in FIG. 1, a body side weather strip 14 for sealing between a door opening portion of the vehicle body and the door is provided.
The drip weather strip 16 and the door weather strip 18 are attached.

In a region A surrounded by a solid line in FIG. 1, the front end portion 20 of the door weather strip 18 is in contact with the drip weather strip 16 as shown in FIG.

FIG. 2 is an enlarged perspective view of the area A shown in FIG. 1, and FIG. 3 is a perspective view of FIG. 2 seen from the inside of the vehicle.

Body side weather strip 14
Is made of rubber and is attached to the door opening on the vehicle body side over substantially the entire circumference. Here, FIG. 4 shows a sectional view taken along the line BB of FIG. As shown in FIG. 4, the body side weather strip 14 includes a welt portion 26 that is fitted to a flange 24 inside the vehicle body panel 22 that forms the door opening edge portion on the vehicle body side, and swells outward of the welt portion 26. When the door is closed, the hollow seal portion 28 seals the space between the door and the door opening portion of the vehicle body over substantially the entire circumference.

The drip weather strip 16 is made of rubber, and as shown in FIGS. 1 and 4, the front pillar 30 and the roof side panel 32, and the rear pillar 3.
4 is attached to the drip channel 36 provided at the upper edge of the vehicle body side door opening.

The drip weather strip 16 is
It is composed of an extruded central portion 38 and a lower end portion 40 integrally molded with the central portion 38.

As shown in FIGS. 2 and 4, the central portion 38 has an inner peripheral side seal lip 42 extending from the inner peripheral side of the door opening to the outer side of the vehicle, and an outer periphery bulging in a hollow shape toward the outer peripheral side of the door opening. The side seal portion 44, and when the door is closed, the inner peripheral seal lip 42 and the outer peripheral seal portion 44 seal between the door and the door opening of the vehicle body. . A drip space 46 is formed between the inner seal lip 42 and the outer seal portion 44.

The lower terminal portion 4 on the side of the front pillar 30.
2, 0 extends from the front door 10 to the front of the vehicle body, enters the inside of the front fender 48, and drains rainwater and the like that has entered the drip space 46 from the inside of the front fender 48 to the outside of the vehicle. It is like this. The lower end portion 40 has an inner peripheral side seal lip 42a continuous from the inner peripheral side seal lip 42.
However, it is formed so as to smoothly project to the inner peripheral side of the door opening in accordance with the curved shape of the door.

The door weather strip 18 is made of rubber. As shown in FIG. 1, in the front door 10, the door weather strip 16 is opposed to the side sill 50 from the front edge of the door where the drip weather strip 16 does not exist, that is, from the front edge of the front door 10. It is attached to the peripheral portion of the lower portion of the front door 10 that extends from the lower portion of the front door 10 to the rear edge of the front door 10. This door weather strip 1
As shown in FIGS. 2 and 4, reference numeral 8 denotes a seal portion 5 having a hollow cross section that abuts the door opening on the vehicle body side when the door is closed.
2 and an attachment base portion 54 corresponding to the shape of the peripheral portion of the front door 10, and an extrusion molding portion 56 having a substantially uniform cross-sectional shape.
Is the main subject.

As shown in FIGS. 2, 3 and 4, a pair of gap lips 5 abutting against the drip weather strip 16 are provided at one end of the extrusion molding portion 56 on the front side of the vehicle body.
The front end portion 20 having the support walls 60 connecting the pair of gap lips 58, 58 is molded continuously and integrally with the extrusion molding portion 56.

As shown in FIG. 4, FIG. 5 and FIG. 6, the front end portion 20 is formed to have substantially the same sectional shape as the extrusion molding portion 56, and is attached to the front door 10 via a clip 62. Has been.

The pair of gap lips 58, 58 have a thin plate shape, and are formed so as to project from the mounting base 54 along a plane orthogonal to the longitudinal direction of the door weather strip 18 with a predetermined gap. , The mounting base 54
A vehicle-inside end portion 66 that rises substantially vertically from the vicinity of the seal portion 52 of the upper end surface 64 of the above, and a tip portion 68 that extends obliquely upward from the upper end of the vehicle-inside end portion 66 toward the vehicle outside, A vehicle exterior side end 70 that extends downward from the vehicle exterior side end of the tip portion 68 and a rear end 7 that extends from the lower end of the vehicle exterior side end 70 toward the lower end surface of the mounting base.
2 and.

Further, as shown in FIG. 4, the mounting base 5 is
The outer side portion 70 and the rear end portion 72 of the gap lip 58 protruding from 4 are in contact with the front door 10 without a gap, and the tip end portion 68 of the gap lip 58 is an inner peripheral side seal of the drip weather strip 16. It is in contact with the lip 42 without any gap.

Then, the pair of gap lips 58, 58
Are connected to each other in the longitudinal direction of the door weather strip 18 by the support walls 60 formed in a thin plate shape at the tip portions 68, 68.

In the above-described embodiment, when the front door 10 is closed, the front end portion 2 is closed.
When the zero seal portion 52 comes into contact with the vehicle body panel 22, the seal portion 52 is appropriately deformed to project toward the space 74 between the inner peripheral side seal lip 42 and the front end portion 20, and the gap lips 58, 58. Since the tip portions 68, 68 contact the inner peripheral side seal lip 42 of the drip weather strip 16 without a gap, the space 74 is substantially closed at the front end portion 20 without a gap.

That is, since the gap lips 58, 58 which are not hollow are used as the means for closing the space 74, the gap lips 58, 58 are provided with a sufficient bending allowance so as to close the space 74 without any gap. However, the influence on the door closing performance can be minimized.

Further, the front end portion 20 can be easily molded, and the cost can be reduced.

Further, since the pair of gap lips 58, 58 are connected by the support wall 60 to enhance the rigidity as a whole, the pair of gap lips 58, 58 are prevented from being curled or broken. Therefore, it is possible to prevent the generation of wind noise from the space 74.

7 and 8 show the second embodiment. In the second embodiment, the vehicle outer ends 70, 70 of the pair of gap lips 58, 58 are connected to each other by a support wall 60 over the entire length.

9 and 10 show a third embodiment. In the third embodiment, a support wall 60 that is substantially parallel to the plane including both vehicle outer ends 70, 70 is provided at a position closer to the seal portion 52 side than the vehicle outer end 70.

Furthermore, the number of supporting walls need not be one,
As a fourth embodiment, as shown in FIG. 11 and FIG. 12, a pair of gap lips 58, 58 are connected between the vehicle outer side end portions 70, 70 and the tip portions 68, 68 by two support walls 60a, 60b, respectively. You can also do it.

13 and 14 show the fifth embodiment. In this fifth embodiment, a pair of gap lips 58, 58 is provided.
Has a substantially V-shaped cross section in a plane along the longitudinal direction of the door weather strip 18, and is formed with the concave portions facing each other, and the support wall 60 has the pair of gap lips 58, 58. The tip portions 68, 68 of the are connected. In the structure of the fifth embodiment, since the gap lips 58, 58 are formed in a substantially V-shaped cross section, the inner peripheral side seal lip 42 of the drip weather strip 16 is formed.
It is easier to follow the shape of
Can be blocked.

[0035]

According to the invention of claims 1 to 3, the mold splitting structure used for molding the front end portion of the door weather strip provided with the gap lip and the supporting wall for preventing wind noise is provided. It is relatively simple, the workability is improved, and the cost can be reduced. Further, even if the bending allowance of the gap lip is sufficiently taken, the door closing performance is less deteriorated.

According to the third aspect of the invention, the gap lip can easily follow the deformation of the drip weather strip, and the space between the drip weather strip and the door weather strip can be more easily closed. Therefore, it is possible to more reliably prevent the generation of wind noise.

[Brief description of drawings]

FIG. 1 is a perspective view of an automobile as seen obliquely from the front.

FIG. 2 is a perspective view of a region surrounded by a symbol A in FIG. 1 showing an embodiment of a door seal structure according to the present invention.

FIG. 3 is a perspective view of FIG. 2 viewed from the inside of the vehicle.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a perspective view of a front end portion of a door weather strip attached to a front door.

FIG. 6 is a perspective view of a front end portion of the door weather strip according to the present invention.

FIG. 7 is a perspective view of a front end portion of a door weather strip according to a second embodiment of the present invention.

8 is a cross-sectional view taken along the line CC of FIG.

FIG. 9 is a perspective view of a front end portion of a door weather strip according to a third embodiment of the present invention.

10 is a cross-sectional view taken along the line DD of FIG.

FIG. 11 is a perspective view of a front end portion of a door weather strip according to a fourth embodiment of the present invention.

12 is a cross-sectional view taken along the line EE of FIG.

FIG. 13 is a perspective view of a door weather strip front end portion according to a fifth embodiment of the present invention.

FIG. 14 is a cross-sectional view taken along the line FF of FIG.

FIG. 15 is a perspective view showing a weather strip attachment position around a door opening of an automobile.

FIG. 16 is a perspective view showing a structure of a front end portion of a door weather strip and a lower end portion of a drip weather strip in a conventional example.

[Explanation of symbols]

20 ... Front terminal 58 ... Gap lip 60 ... Support wall

Claims (3)

(57) [Claims] 1. A drip weather strip which is mounted along the upper edge of a door opening on the vehicle body side and whose lower end portion in front of the vehicle body extends to the inside of the front fender, and a drip weather strip which is mounted along the periphery of the door and is hollow. extrusion unit comprising a seal portion and the mounting base of the position in the vicinity of the lower end portion of the drip weather strip when the front end portion of the vehicle front to be molded integrally with the door closed in succession In the door seal structure of an automobile having a door weather strip, the front end portion of the door weather strip is formed to have substantially the same cross-sectional shape as the extruded portion, and the attachment base portion of the front end portion has the same shape as each other. Along the plane orthogonal to the longitudinal direction of the door weather strip so that the pair of gap lips of the A supporting wall is provided between the pair of gap lips, which protrudes and connects the pair of gap lips to each other along the longitudinal direction of the door weather strip, and when the door is closed, the front end portion is provided. 2. The vehicle door seal structure according to claim 1, wherein the seal portion is in contact with a vehicle body panel of the door opening portion, and the pair of gap lips is in contact with side surfaces of the drip weather strip. 2. The door seal structure for an automobile according to claim 1, wherein the pair of gap lips are connected to each other by two thin plate-shaped support walls that are substantially orthogonal to each other. 3. The pair of gap lips each have a substantially V-shaped cross section in a plane along the longitudinal direction of the door weather strip, and are formed so that their recesses face each other. The door seal structure for an automobile according to claim 1.