JP2003104238A - Draining structure of cowling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent drained water through a cowling of vehicle from flowing to a rear edge of a fender liner and from freezing at a lower edge of a trailing edge of a fender panel in a cold condition. SOLUTION: The draining structure of cowling comprises an opening part 4a passing through an inner wall of an apron upper member 2 in a connecting part between the apron upper member 2 of vehicle and a cowling 1, draining rain water which has entered the cowling 1 into the apron upper member 2 through the opening part 4a, and draining the rain water downwardly through a drain hole 5a of a bottom wall 20 of the apron upper member 2, draining it to outside of the vehicle, and flowing the water along an arch-shaped fender liner 7 which forms a wheel house under the apron upper member 2. The drain hole 5a of the apron upper member 2 is formed immediately above a top upper part 70 of the fender liner 7, and at the top upper part 70 there is formed a front-inclined drainage conduit 9 which receives drainage falling from the drain hole 5a so as to flow the drainage to the front side of the fender liner 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cowl drainage structure for discharging rainwater and the like invading a vehicle cowl to the outside of the car, and more particularly to a drainage structure for discharging rainwater along the fender liner from the cowl through the inside of an apron upper member.

[0002]

2. Description of the Related Art Generally, a cowl of an automobile is installed between left and right apron upper members having a closed cross-section structure and a front pillar, and supports a lower edge of a windshield. As shown in FIG. 4, the cowl 1 has a closed cross-section structure, and a shelf-like open cowl 10 is joined along the front edge, and both ends of the cowl 1 and the open cowl 10 are welded to left and right apron upper members. The lower end of the windshield G is adhered to the upper surface of the cowl 1. A cowl louver 11 that closes the opening is installed above the open cowl 10, and the rear edge of the cowl louver 11 is a windshield G.
It is supported on the lower edge of.

The cowl 1 and the open cowl 10 are provided with a cowl louver 11 for the outside air that goes around the rear edge of the engine hood E.
The slit 12 is taken into the open cowl 10 and is taken into the cowl 1 through the front opening 13, and the taken-in outside air is sent to the vehicle compartment by a duct (not shown) connected to the cowl 1. The cowl 1 and the open cowl 10 need to be drained because rainwater and the like enter with the outside air.

FIG. 5 shows a conventional cowl 1 and an open cowl 1.
A typical example of the drainage structure of No. 0 is shown. In the figure, 2 is an apron upper member, and 3 is a front pillar. An opening 4a communicating with the inside of the cowl 1 is formed in the inner wall of the apron upper member 2 to which the ends of the cowl 1 and the open cowl 10 are joined.
And an opening 4b communicating with the inside of the open cowl 10 is formed so that rainwater and the like that have entered the cowl 1 and the open cowl 10 are discharged into the apron upper member 2 through the openings 4a, 4b. There is. Then, the rainwater drained into the apron upper member 2 has drain holes 5b, 5 provided at the front and rear ends of the bottom wall of the apron upper member 2.
Drained downward from c.

At the position immediately below the apron upper member 2,
An arch-shaped fender liner 7 forming a wheel house is installed inside the fender panel 8. The central top surface of the fender liner 7 is provided with a rectangular bulging portion 71 that bulges upward, and the top portion thereof forms a substantially horizontal surface.
The rainwater drained from the water drainage hole 5b at the front end falls to the front side of the bulging portion 71 of the fender liner 7, and flows down along the front half of the fender liner 7 to form the fender liner 7.
The water is drained out of the car from the lower front end. On the other hand, the rainwater drained from the water drain hole 5c at the rear end falls to the rear side of the bulging portion 71 and flows down along the rear half of the fender liner 7 to the outside of the vehicle from the lower rear end of the fender liner 7. Be drained.

[0006]

However, in the conventional drainage structure, when the vehicle is traveling, the rainwater flowing down along the rear half of the fender liner 7 is, as shown in FIG. 6, the lower end of the rear half of the fender liner 7. In the vicinity, it is easy to be washed backward along the inner surface of the fender panel 8 due to traveling wind or the like entering the fender panel 8. In particular, when snowmelt water flows down along the second half of the fender liner 7 while traveling in a cold region, the snowmelt water ic that has flowed down freezes around the rear edge flange 80 of the fender panel 8 that forms a parting line with the front door D. When the door D is attached, it may interfere with the front edge of the door D to hinder the opening and closing of the door D. In the figure, D1 is a hinge member of the door D.

Therefore, the present invention aims to realize a cowl drainage structure that prevents drainage discharged from the cowl from flowing down to the lower edge of the rear edge of the fender panel and does not hinder the opening and closing of the front door during cold weather. It was done as an issue.

[0008]

SUMMARY OF THE INVENTION According to the present invention, an apron is provided at a connecting portion between an apron upper member having a closed cross section structure extending in a vehicle front-rear direction and forming an upper edge of a side wall of an engine room of the vehicle and a cowl extending in a vehicle width direction. An opening is provided that penetrates the inner wall of the upper member and connects the inside of the cowl with the inside of the apron upper member, and rainwater and the like that have entered the cowl are discharged into the apron upper member through the opening and the apron upper member is Drain downward through the water drain hole provided in the bottom wall and let it flow down along the arch-shaped fender liner that is installed inside the fender panel forming the outer wall of the vehicle body below the apron upper member to form the wheel house. In the cowl drainage structure for draining to the outside of the vehicle, make the drain hole of the apron upper member directly above the top of the fender liner. While forming the location, the top portion of the fender liner to form inclined ditch edge before allowed to flow down toward receiving waste water falling from the water drain hole to the front side of the fender liner (claim 1). The drainage discharged from the cowl into the apron upper member is dropped from the drain hole of the apron upper member to the drain groove at the top of the fender liner, and the drain groove allows it to flow only to the front side of the fender liner. It is possible to prevent drainage from flowing into the rear side of the fender panel and prevent freezing of the lower end of the rear edge of the fender panel.

A convex shape for preventing backward flow of rainwater or the like is provided at each of a rear position of the water drain hole in the bottom wall of the apron upper member and a rear end position of the drain groove at the top of the fender liner. A reversing bead is provided (claim 2). Each water return bead can reliably prevent the drainage from flowing backward in the apron upper member and the drainage from the rear of the fender liner.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which the cowl drainage structure of the present invention is applied to a semi-bonnet type wagon vehicle will be described. As shown in FIG. 1, the side surface of the engine room at the front of the vehicle body is provided with an apron upper member 2 in the front-rear direction that forms the upper edges of the left and right side walls of the engine room. The apron upper member 2 has front and rear rear pillars. 3 is connected to the upper and lower intermediate portions 30. Also, apron upper member 2
An arch-shaped fender liner 7 that forms a wheel house of the front wheel is installed in the lower position of the.
Then, the apron upper member 2, the lower half portion of the front pillar 3, and the fender liner 7 are arranged on the outside of them.
It is covered with a fender panel 8 which constitutes the outer surface of the front part of the vehicle body.

As shown in FIGS. 1 and 2, the apron upper member 2 has an outer panel 2a having a substantially L-shaped cross section.
And an inner panel 2b having a substantially inverted L-shaped cross section. The apron upper member 2 has an intermediate portion 3 of the front pillar 3 which bulges forward in a substantially triangular shape.
The rear end of the member 2 is longitudinally welded from the front end of 0 to the lower edge thereof, and the upper surface of the apron upper member 2 is in front of the upper half of the front pillar 3 forming the side edge of the front window opening. It forms a downward slope. On the other hand, the member bottom wall 20 is substantially horizontal, and the apron upper member 2 is tapered toward the front end. A triangular fixed window opening 31 is provided in the middle portion 30 of the front pillar 3.

The fender liner 7 is an arch-shaped plate formed by injection molding of synthetic resin, and has a suspension tower S on the side wall of the engine room (a part of which is shown in FIG. 2) on the central top surface.
Corresponding to the above, a rectangular bulging portion 71 bulging upward is formed. The fender liner 7 is fastened to the side wall of the engine room at the side edge on the inside of the vehicle.

An upper edge of the fender panel 8 is fastened and fixed to the upper surface of the apron upper member 2, and an arched lower edge is fastened along a side edge of the fender liner 7 on the vehicle exterior side. Further, the rear edge of the fender panel 8 faces the front edge of the front door D to form a door parting portion. In FIG. 1, H is a headlight, B is a front bumper,
The rear end of the front bumper B covers the outside of the lower front end of the fender liner 7.

As shown in FIGS. 1 and 4, between the left and right apron upper members 2, there are provided a cowl 1 and an open cowl 10 which form the lower edge of the front window opening in the vehicle width direction. The cowl 1 has a closed cross section with an upper panel 1a and a lower panel 1b, while the open cowl 10 has a substantially inverted hat cross section, and its rear edge is joined along the front edge of the cowl 1. Both ends of the cowl 1 and the opening cowl 10 are welded to the inner panel 1b of the left and right apron upper members 2, the lower end of the windshield G is adhered to the upper surface of the cowl 1, and the upper opening of the opening cowl 10 is a cowl louver 11. The rear edge of the cover and the cowl louver 11 is supported by the lower edge of the windshield G.

The open cowl 10 takes in outside air, which goes around the rear edge of the engine hood E, from the slit 12 of the cowl louver 11. The cowl 1 opens through its front opening 13 and takes in outside air from the inside of the cowl 10, and sends the taken in outside air to a vehicle compartment through a duct (not shown). Rainwater and the like enter the cowl 1 and the open cowl 10 as well as the outside air. The rainwater and the like are drained from the cowl 1 and the open cowl 10 to the apron upper member 2, and flow down from the apron upper member 2 to the fender liner 7 to be drained to the outside of the vehicle.

As shown in FIGS. 1 and 2, at the connecting portion between the cowl 1 and the apron upper member 2, the cowl 1
A tongue-shaped projecting edge 15 is formed at the side end of the tongue, the bottom wall of which extends and projects outward. Corresponding to this, the opening 4a is formed in the inner panel 2b of the apron upper member 2.
Is formed. In the cowl 1, the projecting edge 15 is inserted into the opening 4a of the inner panel 2b, and the projecting edge 15 is welded to the lower edge of the opening of the opening 4a so that the cowl 1 and the apron upper member 2 communicate with each other. .

Like the cowl 1, the opening cowl 10 is also opened by inserting a tongue-shaped protruding edge 16 formed at the side end portion of the bottom wall into the opening 4b formed in the inner panel 2b of the apron upper member 2. Inside cowl 10 and apron upper member 2
It communicates with the inside.

As shown in FIGS. 1, 2 and 3, at the intermediate position of the bottom wall 20 of the apron upper member 2, it is located directly above the bulging portion 71 of the fender liner 7 and substantially directly below the opening 4a. A drain hole 5a is formed at the position.
The drainage hole 5a is formed in the center of the recess 21 where the surface of the bottom wall 20 is lowered, and the bottom wall 2 is formed behind the drainage hole 5a.
A ridged water return bead 6a extending in the width direction is formed on the 0 surface. Further, a water drain hole 5b is formed in the front portion of the bottom wall 20 at a position substantially directly below the opening 4b.

Further, just below the water drain hole 5a, a concave drain groove 9 for receiving water falling from the water drain hole 5a is formed at the top 70 of the bulging portion 71 of the fender liner 7. The drainage groove 9 extends forward from the vicinity of the rear edge of the top portion 70, and the groove bottom is formed as an inclined surface with the front falling. The front end of the drainage groove 9 is open toward the front, and the front end of the groove bottom is communicated with the arched general surface of the front half of the fender liner 7. The rear end of the drainage groove 9 is closed by the rear edge of the top 70, and the water-returning bead 6b having a convex line is formed at the rear edge of the top 70.
Is formed.

Rainwater and the like that have entered the cowl 1
It is discharged from the opening 4 a to the intermediate portion in the apron upper member 2 along the protruding edge 15 of the bottom wall. The drainage discharged into the apron upper member 2 is the drain hole 5a of the bottom wall 20.
Is discharged from and falls. At this time, the drainage inside the apron upper member 2 is the water return bead 6 behind the drain hole 5a.
It is blocked by a, does not flow backward, and is reliably discharged from the drain hole 5a. Further, the drainage water dropped from the water drainage hole 5a is drained from the drainage groove 9 of the top 70 of the fender liner 7.
And is flowed down to the front half of the fender liner 7 along the bottom of the drainage groove 9. In this case, the waste water that has fallen into the drain groove 9 is blocked by the water return beads 6b at the rear end of the drain groove 9 and does not flow down to the rear half side of the fender liner 7. Then, the drainage flowing down along the front half of the fender liner 7 is discharged to the outside of the vehicle from the drainage port 72 formed at the lower end of the front part of the fender liner 7.

Rainwater or the like that has entered the open cowl 10 travels along the projecting edge 16 and is discharged from the opening 4b to the front side inside the apron upper member 2, and from the drain hole 5b in the bottom wall 20 to the front half of the fender liner 7. It drops upward, flows down along the front half of the fender liner 7, and is discharged to the outside of the vehicle through the drainage port 72 at the lower end of the front part.

[0022]

According to the present invention, all the drainage discharged from the cowl is made to flow down to the front of the fender liner and discharged from the front end of the fender liner to the outside of the vehicle. It does not accumulate on the lower edge of the rear edge of the fender panel and freezes, and does not hinder the opening and closing of the front door.

[Brief description of drawings]

FIG. 1 is a schematic view showing a cowl drainage structure of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view of a main part of a cowl drainage structure of the present invention.

FIG. 4 is a view showing a sectional structure of a cowl.

FIG. 5 is a schematic view showing a conventional cowl drainage structure.

6 is a sectional view taken along line VI-VI in FIG.

[Explanation of symbols]

1 cowl 2 apron upper member 4a opening 5a drainage hole 6a, 6b Water-repellent beads 7 Fender liner 70 top 8 Fender panel 9 drains

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Toshiro Tsukiyama             Toyo, 100 Kanayama, Ichiriyama-cho, Kariya city, Aichi prefecture             Inside Tatai Co., Ltd. F term (reference) 3D003 AA09 CA03 CA07 CA53 CA55                       CA63

Claims (2)

[Claims] 1. An inner wall of an apron upper member is passed through a joint portion of an apron upper member having a closed cross-section structure extending in a vehicle front-rear direction, which is an upper edge of a side wall of an engine room of the vehicle, and a cowl extending in a vehicle width direction. An opening is provided that connects the inside of the cowl with the inside of the apron upper member, and rainwater that has entered the cowl is drained into the apron upper member through the opening, and a drain hole is provided in the bottom wall of the apron upper member. A cowl drainage structure that discharges downwards from the vehicle and then flows down along an arched fender liner that is installed inside the fender panel that forms the outer wall of the vehicle body below the apron upper member and forms a wheel house. In the above, the drain hole of the apron upper member is formed immediately above the top of the fender liner, while The top of Daraina, drainage structure of the cowl, characterized in that the formation of the sloped drainage groove edge before allowed to flow down toward receiving waste water falling from the water drain hole to the front side of the fender liner. 2. A convex portion for preventing a backward flow of rainwater or the like at a rear position of the water drain hole in the bottom wall of the apron upper member and a rear end position of the drain groove at the top of the fender liner. The cowl drainage structure according to claim 1, further comprising a water-repellent bead.