JP3168176B2 - Car door seal structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a seal structure around an automobile door.

[0002]

2. Description of the Related Art FIG. 4 is a view of a press door type automobile viewed obliquely from the front, and FIG. 5 is a sectional view taken along the line AA of FIG. The arrow (B) in FIG. 5 indicates the inner peripheral side of the door opening. Referring to FIGS. 4 to 6, a conventional sealing structure around the front door 1 will be described. A body side weather strip 10 is attached to the door opening on the body side 2 over substantially the entire circumference. When the front door 1 is closed, the body side weather strip 10 comes into contact with the door 1 when the door is closed, and seals the space between the front door 1 and the door 1.

A drip channel 3 is mounted on a drip channel 3 provided at an upper edge of a door opening extending from a front pillar portion 2A to a rear pillar portion 2C via a roof side portion 2B on the body side 2. I have. The drip weather strip 12 is in contact with the inner panel 1a of the door 1 when the door is closed, and forms a drip space 14 between the drip weather strip 12 and the door 1. That is, at the upper edge of the door opening, the two weather strips 10 and 12 substantially double seal the door 1 from the door strip.

In this drip weather strip 12, a front lower end portion 12A shown in FIG. 6 extends away from the front door 1 and into the inside of a front fender 4 located in front of the door 1 to form a drip space. Rainwater or the like that has entered the interior 14 is drained downward from inside the front fender 4.

In a lower region where the drip weather strip 12 does not exist when the door is closed, that is, in a region below the waistline X shown in FIG. 4, a door weather strip (not shown) attached to the peripheral portion of the front door 1 is provided. Abuts against the door opening side, and the body side weather strip 10
In addition, around the door 1 is substantially double-sealed.

A door seal structure similar to that of Japanese Utility Model Publication No. 63-26293 is shown.

[0007]

The lower end portion 12A of the drip weather strip 12 extends away from the door 1 and into the front fender 4, so that when the door is closed, the inner circumference of the opening is smaller than that of the drip weather strip 12. The space formed on the side, that is, the space 16 formed between the drip weather strip 12 and the body side weather strip 10 has a structure that opens to the inside of the front fender 4. For this reason, for example, the wind blown into the front fender 4 during running of the vehicle flows backward in the space 16,
There is a problem of generating wind noise.

Therefore, in the conventional example shown in FIGS. 5 and 6, the lower end portion 1 of the drip weather strip 12 is molded.
An auxiliary lip 18 protruding toward the body side weather strip 10 is formed in 2A, and the space 16 is substantially blocked by the lip 18 as shown in FIG.

However, such an auxiliary lip 18
May be exposed to the outside when the door 1 is opened, and the appearance quality may be impaired.

The auxiliary lip 18 is provided on the body side 2.
To bend following the panel surface of
Since it has a complicated shape that gradually increases downward to fill in 6, it is very difficult to mold the lower end portion 12A. That is, the mold structure of the mold used for the molding is complicated and the number of molds is increased, so that the workability is deteriorated and the manufacturing cost is increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a novel door seal structure capable of effectively preventing the generation of wind noise without deteriorating the appearance quality.

[0012]

According to the present invention, a door seal structure for an automobile is mounted along an upper edge portion of a door opening on a body side of the automobile, and a front lower end portion is provided with a front fender. A drip weatherstrip that extends inward and fits along the perimeter of the door
A hollow shell that contacts the body side when the door is closed with the mounting base
And has a substantially uniform cross-sectional shape having a
A door weather strip having a side upper terminal part molded therein; and a door weather strip when the door is closed.
I will reduce the gap between the drip weather strip
Sea urchin, with is located in the vicinity of the lower end portion of the drip weather strip the upper end portion of the door weather strip when the door is closed, the attachment group in the upper end portion
Part inflated to one side, in the inflated portion, the gap to contact the door is closed to the side of <br/> drip weather strip
Close the thin plate-shaped gap lip to close the door weather strip.
It is characterized by being formed upright in a direction substantially perpendicular to the longitudinal direction .

[0013] The invention of claim 2 is characterized in that the gap lip is formed in a soft thin plate shape, and that a tip portion abutting on the drip weather strip is thinner than a base portion side. .

According to a third aspect of the present invention, the seal lip formed on the inner peripheral side of the opening of the drip weather strip smoothly swells toward the inner peripheral side of the opening at the lower end portion so as to contact the inner surface of the door. It is characterized in that the clearance lip abuts on the surface of the seal lip at the bulging portion.

[0015]

According to the first aspect of the present invention, when the door is closed, the gap lip formed at the upper end portion of the door weather strip comes into contact with the lower end portion of the drip weather strip, and the drip weather strip and the drip weather strip are separated from each other. Since the gap formed between the front fender and the front pillar portion is substantially blocked along the inner peripheral side of the opening of the drip weather strip, the wind noise is generated. Can be effectively blocked.

[0016] Here, the door weather strip of the upper terminal portion position is <br/> near the lower end portion of the drip weather strip Rutotomoni, the mounting base to the one side in the upper end portion Rise
Since the gap formed between the drip weather strip and the drip weather strip is made smaller and the gap is filled with the gap lip, the gap lip can be reduced in size and simplified. Therefore, the appearance quality is improved, and, for example, the mold structure for molding the upper end portion is simplified, the number of molds is reduced, and the manufacturing cost can be reduced.

Further, since the gap lip is formed on the door weather strip attached to the door side, the structure of the drip weather strip attached relatively to the vehicle body can be simplified, and the door when the door is opened can be simplified. The appearance quality of the opening can be improved. That is, since there is no need to form an auxiliary lip on the drip weather strip as in the above-described conventional structure, the auxiliary lip is not exposed on the door opening side.

Further, since the drip weather strip and the door weather strip are connected to each other, it is possible to seamlessly seal around the door from the drip weather strip to the door weather strip, thereby improving the sealing performance. I do.

According to the second aspect of the present invention, the gap lip is
Since it is formed in a soft and thin plate shape and the tip portion that contacts the drip weather strip side is further thinned, for example, even when there is a dimensional error on the vehicle body side, it follows the shape of the contact portion. Can be appropriately bent. Therefore, the door has an excellent fit when the door is closed, the gap can be reliably closed, and the reaction force when the door is closed is minimized.

According to the third aspect of the present invention, since the seal lip of the drip weather strip is smoothly swelled at the lower end portion, it is possible to ensure excellent sealing quality with the door and excellent appearance quality. Has become. Since the gap lip is in contact with the surface of the seal lip of the bulging portion, the door is continuously and continuously sealed from the drip weather strip to the door weather strip when the door is closed.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which a seal structure according to the present invention is applied around a front door 1 of an automobile shown in FIG. 4 will be described in detail with reference to FIGS. FIG. 1 is a perspective view showing a region surrounded by reference numeral C in FIG. 4 when the door is closed. The body side weather strip 10 and the like are not shown. FIG. 2 corresponds to the DD section of FIG. The same parts as those in the above-described conventional structure are denoted by the same reference numerals.

On the side of the body side 2 of the vehicle body, a body side weather strip 10 is provided over substantially the entire periphery of the door opening.
And a drip provided above the body side weather strip 10 and along the upper edge of the door opening extending from the front pillar portion 2A to the rear pillar portion 2C via the roof side portion 2B via the roof pillar portion 2B. A drip weather strip 20 is mounted on the channel 3. On the other hand, when the door is closed, the drip weather strip 20
The door weather strip 30 is mounted along the peripheral edge of the door 1 in the lower region where no is present.

The body side weather strip 10 is formed to have a substantially uniform cross section by a well-known extrusion molding method, and as shown in FIG. 2, a welt fitted to the inner peripheral flange 2a of the body side 2 forming an edge of the door opening. And a hollow seal portion 10b attached to the outside of the cabin of the welt portion 10a. The hollow seal portion 10b is pressed against the inner panel 1a of the door 1 when the door is closed, and Is sealed over substantially the entire circumference.

The drip weather strip 20 is shown in FIG.
As shown in FIG. 2, a lower terminal portion 20B is connected to a lower terminal on the front side of the extruded portion 20A simultaneously with the molding.

The extruded portion 20A is formed by a front pillar 2
The portion along the line A has a cross-sectional shape excluding the auxiliary lip 18 made of sponge rubber from the drip weather strip 12 having the conventional structure shown in FIG. A side seal lip 22 and an outer peripheral side seal lip 24 projecting in a hollow shape to the outer peripheral side of the opening, the two lips 22, 24 abut against the door 1 when the door is closed, and a drip space between the two lips 22, 24. 14 are formed. In particular, the outer peripheral side seal lip 24
In order to smooth the surface of the vehicle body when the door is closed, the gap between the molding 5 fitted to the peripheral portion of the windshield (not shown) and the peripheral portion of the front door 1 is appropriately filled.

On the other hand, a lower terminal 2 extending forward of the vehicle body
1B, as shown in FIG. 1, separates from the door 1 and enters the inside of the front fender 4, and the drip space 1
Rain water or the like that has entered the inside of the front fender 4 is drained downward from the inside of the front fender 4 as appropriate.

The lower terminal portion 20B is
The inner peripheral side seal lip 22a which continues from the inner peripheral side seal lip 22 of A smoothly swells toward the opening inner peripheral side so as to follow the curved shape on the door side. As a result, in the portion where the inner peripheral side seal lip 22a is greatly swelled, FIG.
As shown in the figure, although the outer peripheral side seal lip 24a continuous from the outer peripheral side seal lip 24 of the extruded part 20A is largely separated from the door 1 and enters the inside of the front fender 4, the inner periphery bulged toward the opening inner peripheral side. The side seal lip 22a is in contact with the inner surface of the door inner panel 1a continuously from the inner peripheral side seal lip 22 of the extruded portion 20A.

As shown in FIG. 3, the door weather strip 30 has a hollow mounting base 32 corresponding to the bent shape of the mounting portion of the door inner panel 1a and a door opening side of the body side 2 when the door is closed. The extruded portion 30A having a substantially uniform cross-sectional shape having a hollow seal portion 34 to be pressed against is mainly used, and an upper end portion 30B is connected to an upper end on the front side of the extruded portion 30A simultaneously with the molding. ing.

In this embodiment, as shown in FIGS. 1 and 2, the upper terminal 30B is positioned so as to be located near the inner peripheral side of the opening of the lower terminal 20B of the drip weather strip 20 when the door is closed. The weather strip 30 extends upward beyond the waistline X, and a gap lip 36 is formed in the upper end portion 30B to substantially form the small gap 38 formed between the weather strip 20 and the drip weather strip 20. Is closed.

More specifically, as shown in FIG. 3, the upper end portion 30B has a hollow seal portion 34a having an extruded portion 30a.
A has a substantially same cross-sectional shape as the hollow seal portion 34A, but the mounting base 32a continuous from the mounting base 32 of the extruded portion 30A smoothly reduces the gap 38 formed when the door is closed. It has a swollen shape. That is, in the mounting base 32a, the back side of the hollow seal portion 34a is largely bulged to the outside of the vehicle in a hollow shape.

The gap lip 36 is formed in a soft and thin plate shape, is located near the side of the hollow seal portion 34 a on the vehicle outside, and is substantially perpendicular to the longitudinal direction of the door weather strip 30. It is formed upright. Further, in the gap lip 36, the tip portion 36a that contacts the drip weather strip 20 is thinner than the base portion 36b side, and more specifically, the thickness of the tip portion 36a is 1 mm to 2 mm.
mm. Further, the leading edge of the gap lip 36 is smoothly curved in accordance with the surface shape of the inner peripheral side seal lip 22a with which the contact is made.

At the time of molding, the end of the core forming the inner surface of the mounting base 32a is connected to the mounting base 3 of the extrusion forming part 30A.
2 and while the end of the core forming the inner surface of the hollow seal portion 34a is inserted into the hollow seal portion 34 of the extrusion molding portion 30A, the mold is clamped, and a rubber material is injected into the cavity. Then, the upper terminal portion 30B including the gap lip 36 is integrally molded with the extruded portion 30A in a connected state. Reference numerals 40 and 42 shown in FIGS. 1 and 2 denote core removal holes for pulling out each core mold from the product after the molding.

The upper terminal 30B is attached to the door inner panel 1a via a clip 44, and the clip 44 is inserted into the mounting base 32a by using the core hole 40 on the mounting base 32a. . At this time, zero-touch is performed on the inner panel 1a whose outer side surface of the mounting base 32a is curved, and the outer-side edge 36c of the gap lip 36 continuous from the mounting base 32a is also zero-touched on the inner panel 1a.

When the door 1 is closed, the gap lip 36
Is the lower end 2 of the drip weather strip 20
It contacts the surface of the inner peripheral side seal lip 22a at 0B while flexing. In this contact portion, as shown in FIG.
The inner peripheral side seal lip 22a is the door inner panel 1a.
At the same time, the hollow seal portion 34a comes into contact with the panel surface on the body side 2 side, and the gap lip 36, the inner peripheral side seal lip 22a, and the hollow seal portion 34a are flexed appropriately between the drip weather strip 20 and the gap. The minute gap 38 is closed without any gap.

The inner side edge 36 of the gap lip 36
In order to prevent the reaction force at the time of closing the door from excessively increasing, an appropriate gap allowing the bending deformation of the hollow seal portion 34a and the gap lip 36 is provided between the d and the panel surface on the body side 2 side. Is set.

As described above, in this embodiment, when the door is closed, the drip weather strip 20 and the door weather strip 30
Is substantially closed, so that the space 16 extending from the inside of the front fender 4 to the front pillar portion 2A side along the inner peripheral side of the drip weather strip 20 is blocked on the way. As a result, it is possible to effectively prevent the generation of wind noise caused by the wind blown into the front fender 4 while the vehicle is running.

Here, the upper end portion 30B of the door weather strip 30 is positioned near the lower end portion 20B of the drip weather strip 20, and the gap 38 formed between the upper end portion 30B and the drip weather strip 20 is minute. Since the minute gap 38 is filled with the gap lip 36, the gap lip 36 can be reduced in size and simplified. Therefore, the appearance quality is improved, and the mold structure for molding the upper terminal portion 30B is simplified, the number of molds is reduced, and the manufacturing cost can be reduced.

Further, since the gap lip 36 is formed on the door weather strip 30 attached to the door 1, the structure of the drip weather strip 20 attached relatively to the vehicle body can be simplified, and the door 1 can be mounted. The appearance quality of the door opening when opened can be improved.
Specifically, since there is no need to form an auxiliary lip on the drip weather strip as in the above-described conventional structure, the auxiliary lip is not exposed on the door opening side.

Further, since the gap lip 36 is soft and thin, and the tip portion 36a is further thinned, the gap lip 36 easily bends even when there is a dimensional error on the vehicle body side. Therefore, the small gap 38 can be reliably closed because of the excellent fit. Moreover, since the reaction force when the door is closed is minimized, the door opening / closing property is also kept good.

In addition, at the portion where the gap lip 36 contacts the drip weather strip 20 when the door is closed, as shown in FIG. 2, the inner peripheral side sealing lip 22a of the drip weather strip 20 contacts the inner panel 1a. The hollow sealing portion 34a of the door weather strip 30 is in contact with the panel surface of the body side 2. As a result, when the door is closed, the sealing is continuously performed from the drip weather strip 20 to the door weather strip 30 without any break, and the sealing performance is improved.

Here, the inner peripheral side seal lip 22a
Since the swelling smoothly follows the curved shape on the door side, the appearance is excellent.

[Brief description of the drawings]

FIG. 1 is a perspective view of a region surrounded by reference numeral C in FIG. 4 showing one embodiment of a door seal structure according to the present invention.

FIG. 2 is a sectional view taken along the line DD in FIG. 1;

FIG. 3 is a perspective view showing the door weather strip shown in FIG. 1 alone;

FIG. 4 is a perspective view of the automobile as viewed obliquely from the front.

FIG. 5 is a cross-sectional view taken along line AA of FIG. 4 and line A1-A1 of FIG. 6;

FIG. 6 is a perspective view showing a lower terminal portion of a drip weather strip used in a conventional door seal structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Door 2 ... Body side 4 ... Front fender 20 ... Drip weather strip 20B ... Lower terminal part 22, 22a ... Inner peripheral side seal lip 30 ... Door weather strip 30B ... Upper terminal part 36 ... Gap lip 36a ... Tip part 36b ... base 38 ... gap

Claims (3)

(57) [Claims] 1. A drip weather strip mounted along an upper edge of a door opening on a body side of an automobile and having a front lower end extending inward of a front fender;
When the door is closed and the mounting base is installed along the periphery of the door
Having a hollow seal portion in contact with the body side.
It has a cross-sectional shape, and at least the front upper end is formed
Has a door weather strip that is form, the, door weather strip in the door is closed and Dorippuue
So as to reduce the gap between the strip and is positioned in the vicinity of the lower end portion of the drip weather strip the upper end portion of the door weather strip when the door is closed bets
In particular, the mounting base at the upper end is expanded to one side.
Et al. Mase, in the bulging portion, thin plate-like gap for closing the gap in contact with the side of the drip weather strip when the door is closed
The lip is almost perpendicular to the longitudinal direction of the door weather strip.
An automobile door seal structure characterized by being formed upright in a vertical direction . 2. The gap lip according to claim 1, wherein the gap lip is formed in a soft thin plate shape, and a tip portion abutting on the drip weather strip is thinner than a base portion side. Car door seal structure. 3. The seal lip formed on the inner peripheral side of the opening of the drip weather strip is swelled smoothly toward the inner peripheral side of the opening at the lower end portion so as to contact the inner surface of the door. 3. The vehicle door seal structure according to claim 1, wherein the gap lip abuts on a surface of the seal lip.