JP2001030769A - Drainage structure for door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage structure for a vehicle capable of effectively draining water entering between a lip of a weather strip and a door panel out of a vehicle. SOLUTION: A weather strip 3 is provided on the periphery of a vehicle door, and a sub lip 6 and main lip 7 are press contacted with a door panel so as to have waterproof sealing property. A drainage hole 11 is pierced in a portion where the sub lip 6 and the main lip 7 contact, and communicated with a hollow portion 9 inside the weather strip 3. The drainage hole 11 is provided with a partition 12, and thus water leaking from a sealed portion of the main lip 7 is drained out of the vehicle through the partition 12 and hollow portion 9 inside the weather strip 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door drainage structure using a hollow weatherstrip inner space as a drainage channel.

[0002]

2. Description of the Related Art As shown in FIG.
Is disposed, and the body panel 4 is located in the door frame of the vehicle.
As shown in FIG. 10, a door opening weather strip (hereinafter abbreviated as a weather strip) 3 is provided between the door 2 and the door 2. Weather strip 3
Generally, it is made of rubber such as SBR (styrene butadiene rubber) or EPM (ethylene propylene rubber), and is sandwiched between the door 2 and the body panel 4 by being mounted on the inner peripheral side of the door 2. It acts as a seal to prevent water from entering the room.

FIG. 11 is an enlarged view of the weather strip 3 located at the rear upper corner of the door 2 as viewed in the direction of arrow a in FIG. Usually, the weather strip 3 has a straight portion formed by extrusion and a curved portion formed by molding. The black side (right side in the drawing) of the triangle b in FIG. 11 is the molded part 3a formed by molding, and the white side (left side) is the extruded part 3b formed by extrusion molding. They are joined together. The weather strip 3 has a base portion 5 formed on the lower side, and a sub lip 6 protruding in the vehicle width direction and a main lip 7 disposed above the sub lip 6 are provided on the outer side surface of the vehicle body of the weather strip 3. I have.

FIG. 12 is a sectional view taken along the line S--S of FIG. 11, and FIG. 13 is a sectional view taken along the line T--T of FIG. The door 2 includes an inner panel 2a and an outer panel 2b,
In the step formed on the upper part of the window frame of the inner panel 2a,
A weatherstrip rail 8 is provided. The weatherstrip rail 8 is disposed within a range of an arrow c shown in FIG. 10, and the base 5 of the weatherstrip 3 is sandwiched or fitted to the weatherstrip rail 8. As shown in FIGS. 12 and 13, the sub lip 6 is disposed along the upper part of the weather strip rail 8, and the tip is pressed against the inner panel 2 a surface of the door 2, so that the weather strip 3 and the inner panel 2 a The main lip 7, which seals the space between each other and the other cross section of which is bent in a substantially S-shape, also has the front end portion 7a or the bent portion 7b abutting on the inner panel 2a surface, thereby sealing between the weather strip 3 and the inner panel 2a. .

[0005] The sealing of the weather strip 3 on the cabin side is performed by pressing the main seal portion 3c of the weather strip 3 against the body panel 4 with the door 2 closed, so that the weather strip 3 and the body panel 4 are separated. The seal at this portion mainly waterproofs rainwater or the like that tends to enter between the body panel 4 and the door 2. As shown in FIG. 11, the extruded portion 3b of the weatherstrip 3 is hollowed out in an annular shape by extruding the weather strip 3, and the molded portion 3a is
As shown in FIG. 2 and FIG. 13, slits 3d for die-cutting are joined to form an annular shape, and the inside is hollow.

[0006]

As shown in FIGS. 12 and 13, the seal between the inner panel 2a of the door 2 and the weatherstrip 3 is provided at the tip 7a of the main lip 7,
The bent portion 7b and the tip of the sub lip 6 are the inner panel 2
This is performed by pressing against the a-plane, but the region surrounded by the bent portion 7b of the main lip 7, the sub-lip 6, the sub-lip 6, and the inner panel 2a due to vibration of the vehicle body, deterioration or scratches of the rubber, or the like. Is flowing into the water stop passage 10 which is the water. The water stop passage 10 is wide at an intermediate portion of the main lip 7 (an intermediate portion of the door in the longitudinal direction of the vehicle) as shown in FIG. 12, and narrows as it approaches the end of the main lip 7 as shown in FIG. In the part, it disappeared, and it became a weir and dammed water.

At this time, when the amount of water increases, the sub-lip 6 leaks from a portion having a small sealing pressure as shown in FIG.
Water may enter the gap between the base portion 5 and the weatherstrip rail 8. Because of the emphasis on assemblability, a slight margin is provided between the base portion 5 of the weather strip 3 and the weather strip rail 8.
Therefore, the water that has entered the inside of the weatherstrip rail 8 falls from the end of the weatherstrip rail 8 due to its inclination, and finally enters the inside of the seal portion as shown in FIG. The present invention has been made in view of the above problems, and has as its object to provide a door drainage structure capable of reliably draining water that enters between a lip of a weatherstrip and a panel to the outside of a vehicle.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a drainage structure for a door provided with a hollow weatherstrip for sealing between a peripheral portion of the door and a body panel. A partition wall defined in the longitudinal direction of the weather strip is provided in the hollow portion, a drain channel is formed by the partition wall, and a drain hole communicating the drain channel and the outside is provided on the outer peripheral wall of the weather strip. .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A door drainage structure according to an embodiment of the present invention will be described below with reference to the drawings. Note that the same components as those of the conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted. FIG. 1 is a view of an automobile door 2 as viewed from the inside of the vehicle. FIG. 2 is a perspective view of the weather strip 3 (corresponding to FIG. 11).
FIG. 4 is a side view, and FIG. 4 is a cross-sectional view (corresponding to FIG. 13) taken along the line UU in FIG.

As shown in FIG. 1, a weather strip 3 is mounted on a peripheral portion of the door 2, and a drain hole 11 as shown in FIGS. I have. The drain hole 11 is a triangular pyramid region of the water stop passage 10 surrounded by the junction between the bent portion 7b of the main lip 7 and the sub lip 6 and the inner panel 2a, that is, a portion serving as a weir when water enters the water stop passage 10 Has been drilled. The drain hole 11 communicates the outside with the hollow portion 9 provided inside the weather strip 3, and the hollow portion 9 of the weather strip 3 is provided with a partition wall 12 having a U-shaped cross section as shown in FIG. 5. They are provided integrally and in a lip shape. The portion indicated by the chain line in the drawing indicates the position where the drain hole 11 is located, and the portion indicated by hatching is a portion integrated with the inner peripheral wall of the weather strip 3.

As shown in FIG. 4, a partition wall 12 having a substantially inverted U-shaped cross section has a U-shaped bottom protruding until it comes into contact with an inner wall of the weather strip 3 on the passenger compartment side. Of the inner panel 2a. The tip 12a has a circular cross section. Further, as shown in FIG. 5, a wall 12b is provided on the upstream side (right side in the drawing) of the partition wall 12, and the partition wall 12 is provided.
Is formed in a substantially bag shape except for the tip 12a, and the drain hole 11 is formed.
The shape is gradually narrowed toward the upstream side. As shown in FIG. 6, the downstream end of the partition wall 12 is extended to a portion of a triangle b which is a joining portion between the molded portion 3a and the extruded portion 3b, and a hollow portion of the weather strip 3 is formed at the end. 9 at the bottom.

With such a configuration, when the door 2 is closed, the main seal portion 3c of the weather strip 3 pressed against the body panel 4 as shown in FIG.
2, the pressure is transmitted to the tip 12 a at the upper part, and the tip 12 a presses the base of the main lip 7 toward the inner panel 2 a of the door 2, and is arranged continuously with the base of the partition wall 12 at the lower part. The pressure is transmitted to the sub lip 6 and presses the inner panel 2a. Therefore, the sealing property between the body panel 4 and the door 2 is improved. Further, since the cross section of the distal end portion 12a of the partition wall 12 is circular, the partition wall 12
Even if the shape changes slightly, the circumferential surfaces contact evenly, and a stable sealing pressure can always be maintained. When the weatherstrip 3 is molded, the tip 12a is integrally formed, that is, the weatherstrip 3 is not completely closed.
There is also an effect that die cutting becomes easy.

When rainwater enters the water stop passage 10, the drain hole 11 is disposed at a lower position of the water stop passage 10, and the drain hole 11 is provided in the water stop passage 10 on the opposite side of the traveling direction of the vehicle. Since it is provided at the end, water flows smoothly to the drain hole 11 side due to its own weight due to the inclination or acceleration of the vehicle. Water flowing into the weather strip 3 from the drain hole 11 is guided to the partition wall 12 as shown in FIG. Since the closing wall 12b is provided on the upstream side of the partition wall 12, it is possible to prevent the water from flowing out to the upstream side when, for example, the water flows backward during the brake operation. At this time, the wall 12
By providing the b, the rigidity on the upstream side of the partition wall 12 is increased, the main seal portion 3c of the weather strip 3 is hard to be crushed, and the tightening of the door 2 may be deteriorated. Is gradually narrowed toward the upstream side from the drain hole 11 and is separated from the main seal portion 3c.

Since the downstream end of the partition wall 12 is located at the boundary between the extruded portion and the molded portion of the weather strip 3, water is guided toward the extruded portion, and a section taken along the line YY in FIG. As shown in FIG. 7B, it flows down to the hollow portion 9 of the weather strip 3 attached to the side of the door 2. A discharge port 13 is provided below the door 2 as shown by an arrow d in FIG. 7C, and water can be discharged outside the vehicle.

Although the embodiments of the present invention have been described above, the present invention is, of course, not limited thereto, and various modifications and changes can be made based on the technical concept of the present invention. For example, in the above embodiment, the weather strip 3
Although water is discharged by providing a partition wall 12 integrally formed with the weather strip 3, a rubber pipe 14 separate from the weather strip 3 may be attached to the drain hole 11 instead of the partition wall 12 as shown in FIG. Also, instead of the partition wall 12, a lip piece 21 is provided on the hollow portion 9 side as shown in FIG.
Water may be discharged to the extruded part 3b side of the weather strip 3.

[0016]

As described above, according to the first aspect of the present invention, since the drain hole communicating with the hollow portion of the weather strip is provided in the peripheral portion of the weather strip, the water in the door frame portion is free from the weather strip. It is possible to prevent entry into the rail. In addition, the inner space of the weather strip can be used as a drainage channel for water. Claim 2
According to the invention, since the drain hole is provided at the meeting portion between the main lip and the sub lip, that is, the portion where water flows in, water can be efficiently discharged. According to the third aspect of the present invention, since the partition wall is formed by the inner lip piece protruding inward of the hollow portion of the weather strip, the die can be easily removed and the manufacturing cost is low. According to the fourth aspect of the present invention, since the lip piece serving as the partition wall is brought into contact with the inner peripheral wall of the hollow portion of the weather strip, the pressing force of the hollow portion of the weather strip is transmitted to the pressing wall at the upper end of the partition wall. The sealing force at the base of the lip increases. According to the fifth aspect of the present invention, since the cross section of the tip of the lip is circular, the peripheral surface of the lip can always stably contact the inner peripheral wall of the weather strip even if the shape of the partition wall changes slightly. Can,
The sealing pressure can be maintained. According to the sixth aspect of the present invention, since the sub-lip and the bottom surface of the partition wall are formed in the same plane, the pressing force of the hollow portion of the weather strip is transmitted to the sub-lip, the sealing force of the sub-lip is increased, and the sub-lip is further drained from the drain hole. Water flows smoothly. According to the seventh aspect of the present invention, since the partition wall is provided with the wall for preventing the backflow of water, it is possible to prevent water from flowing out of the weather strip to a portion other than the water drainage channel. In the invention of claim 8,
Since the extending portion is gradually narrowed toward the door panel, it is possible to prevent the rigid wall of the partition wall from interfering with the inner peripheral wall of the weather strip. According to the ninth aspect of the present invention, since the partition wall is a rubber hose separate from the weather strip and the rubber hose is connected to the drain hole, the same effect as in the first aspect can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view of a door employing a door drainage structure according to an embodiment of the present invention, as viewed from the indoor side.

FIG. 2 is a perspective view of a weather strip mounted on the door of FIG.

FIG. 3 is a side view of the weatherstrip of FIG. 2;

FIG. 4 is a sectional view taken along the line UU in FIG. 3;

FIG. 5 is a perspective view of a partition wall provided inside the weather strip of FIG. 2;

FIG. 6 is a sectional view taken along line WW of FIG. 3;

7A is a cross-sectional view taken along line XX in FIG. 1, FIG. 7B is a cross-sectional view taken along line YY in FIG.
FIG. 2C is a sectional view taken along line ZZ in FIG.

FIG. 8A is a perspective view of a rubber hose according to a modified example of the present invention, and FIG. 8B is a cross-sectional view illustrating a modified example of a partition wall.

FIG. 9 is a side view of an automobile employing a conventional door drainage structure.

FIG. 10 is a side view of a weather strip mounted on a periphery of the door of FIG. 1;

FIG. 11 is a perspective view of the weather strip of FIG.

FIG. 12 is a sectional view taken along the line SS in FIG. 11;

13 is a cross-sectional view taken along a line TT in FIG.

FIG. 14 is an enlarged view of a portion “e” in FIG. 13;

FIG. 15 is a perspective view showing a state in which water is leaking from a break in a weather strip rail attached to an upper peripheral portion of a door of the automobile in FIG. 9;

[Explanation of symbols]

 Reference Signs List 2 Door 2a Inner panel 3 Weather strip 3a Mold forming part 3b Extrusion forming part 4 Body panel 6 Sublip 7 Main lip 7a Tip 7b Bend 8 Weather strip rail 9 Hollow 10 Water stop 11 Drain hole 12 Partition wall 12a Tip 12b Wall 12c Pressing wall 14 Rubber pipe 21 Lip piece

Claims (9)

[Claims] 1. A door drainage structure provided with a hollow weatherstrip for sealing between a peripheral portion of a door and a body panel, wherein a partition wall is defined in a hollow portion of the weatherstrip in a longitudinal direction of the weatherstrip. A drainage channel is formed by the partition wall, and a drainage hole communicating the drainage channel with the outside is provided on an outer peripheral wall of the weather strip. 2. A weather strip rail for sandwiching the weather strip is provided on an upper portion of the door, and a sub lip and a main lip are provided on an outer peripheral portion of the weather strip so as to press against a door panel, and the sub lip is provided on the weather strip rail. The main lip is disposed above the sub lip, the end of the main lip is associated with the sub lip, and the drain hole is formed in the junction between the sub lip and the main lip. The drainage structure for a door according to claim 1, wherein the drainage structure is provided. 3. The drainage structure for a door according to claim 1, wherein the partition wall is formed by a lip piece protruding inward of a hollow portion of the weather strip. 4. An intermediate portion of the lip piece is pressed against an inner peripheral wall of the weather strip on the body panel side and folded upward, and further, a tip portion of the lip piece is folded on an inner peripheral wall of the weather strip on the door panel side. 4. The drainage structure for a door according to claim 3, wherein a cross section of the lip is formed in a U-shape, and a tip end of the lip is pressed against the inner peripheral wall on the door panel side. 5. The drainage structure for a door according to claim 4, wherein the tip of the lip has a circular cross section. 6. The drain structure for a door according to claim 3, wherein the lip and the bottom surface of the drain hole are provided on the same plane. 7. The partition wall according to claim 3, wherein an extension is provided extending in a direction opposite to the flow of water, and the extension is provided with a wall for preventing backflow of water. A drainage structure for a door as described in 1. 8. The drainage structure for a door according to claim 7, wherein the extension portion is formed so as to gradually narrow in the direction in which the water flows backward. 9. The drainage structure for a door according to claim 1, wherein the partition wall is a rubber hose separate from the weather strip, and the rubber hose is connected to the drainage hole.