JP3173148B2 - Car cowl structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile cowl structure having excellent ventilation performance and drainage performance.

[0002]

2. Description of the Related Art As shown in FIGS. 11 to 13, in a cowl structure 9 of an automobile, a cowl box 91 provided in a lower front portion of a front window 99, a drain hole 910 provided in the cowl box 91, and an air introduction port. Mouth 90,
And an air duct 920. The cowl box 91
As shown in FIGS. 11 and 12, each has a box-like shape including an outer panel 911 as a top plate, an inner panel 912 as a bottom plate, and a side panel 913 as a side plate. In addition, a sealing material 6 is interposed between them.

[0003] At both ends of the cowl box 91, FIG.
1, as shown in FIG.
Drain hole 91 having a drain groove 9101 for discharging water
0 is provided. An air inlet 90 is provided above the cowl box 91. Fresh air 8
Flows into the cowl box 91 from the air inlet 90
And flows as indicated by the arrow. Of the outside air 8
Is introduced through the air duct 920
Flow to fan 92.

On the other hand, as shown in FIG. 11, rainwater 7 that has entered the cowl box 91 together with outside air
It is discharged to the outside through the drain hole 910 through 101.
Therefore, the cowl box 91 has an air duct function as an outside air inflow passage for introducing the outside air 8 into the vehicle interior,
It has a drainage function of draining rainwater 7 mixed in the water.

[0005]

However, the above prior art has the following problems. That is, as shown in FIG.
Part of the outside air 8 introduced from the air inlet 90 flows out of the drain hole 910 to the outside. As a result, the amount of outside air 8 sent into the vehicle interior decreases,
Ventilation performance into the vehicle interior decreases.

To prevent this, it is conceivable to make the drain hole 910 smaller. However, when the drain hole 910 is made smaller, drainage of the rainwater 7 is reduced. As a result, rainwater 7 accumulates in the cowl box 91 and
Part of the rainwater 7 together with the outside air 8 from the duct 920 Buroafu
There is a risk of being sent through the fan 92 into the vehicle interior. The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a cowl structure of an automobile having excellent ventilation performance and drainage performance.

[0007]

According to the present invention, there is provided a cowl structure in which a cowl box is provided at a front portion of an automobile, and water drain holes are provided at both ends of the cowl box. To prevent air from flowing out of the drain hole in the vicinity of the drain hole.
Providing a plurality of fit of the shielding plate, and the below the plurality of shield opening for wastewater leading to the water drain hole, each other respectively
A cowl structure for an automobile, wherein the cowl structure is provided at a different position . Most notably in the present invention, is in the cowl box between the water drain hole and the air duct and in the vicinity of the water drain hole, said draining
Providing multiple shielding plates to prevent air from flowing out of the holes,
In addition, below the plurality of shielding plates, a draining hole communicating with the drain hole is provided.
Make sure that the water openings are in alternate positions
It is to be provided .

The shielding plate is made of, for example, a metal plate or a plastic plate, and the number thereof is one to several. Further, as shown in the second and third embodiments, the shielding plate can be formed integrally with a cowl louver, a cowl cover, and the like arranged on the cowl box. This facilitates the manufacture and installation of the shielding plate.

Further, as shown in Embodiment 4,
It is preferable to have a bent shape protruding toward the drain hole. This allows the rainwater to flow smoothly without staying in the vicinity of the shielding plate, thereby further improving drainage. Further, it is preferable that the shielding plate is provided at a position where a drain groove provided on a bottom plate of the cowl box is low in order to improve drainage. In the case where a plurality of shielding plates are provided, it is preferable that the drainage openings be provided so that the positions thereof are alternated. This makes it difficult for outside air to flow out of the drain hole to the outside.

[0010]

In the cowl structure of the automobile according to the present invention, a shielding plate for preventing air outflow is provided between the drain hole and the air duct and near the drain hole. In addition,
Arrange a plurality of shielding plates and place them below the
The openings for drainage leading to the drainage holes are
It is provided so as to be in the right position . Therefore, the outside air
The passage in the direction of the drain hole is narrowed by the shielding plate, and it is difficult for the water to flow out from the drain hole. Therefore, the amount of outside air sent into the vehicle interior through the air duct increases,
Ventilation performance is improved.

On the other hand, the rainwater that has entered the cowl box together with the outside air passes through a drain opening below the shielding plate, and
It flows out from the drain hole. If the shielding plate has a bent shape protruding toward the drain hole,
The time during which rainwater stays near the shield plate is reduced. Therefore, drainage of rainwater is quick and smooth, and drainage is further improved. Therefore, according to the present invention, it is possible to provide an automobile cowl structure having excellent ventilation performance and drainage performance.

[0012]

Embodiment 1 A cowl structure of an automobile according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 4, the cowl structure 9 of this embodiment is provided with a cowl box 91 at the front of the vehicle (see FIG. 13), and drain holes 91 at both ends thereof.
0 is provided. Within the cowl box 91, the
Between the drain hole 910 and the air duct 920, a shielding plate 1 for preventing air outflow is provided near the drain hole 910, and below the shielding plate 1, a drain opening communicating with the drain hole 910 is provided. 110, 120, 130, and 140 are provided respectively.

As shown in FIGS. 2 and 3, the shielding plate 1 comprises a first shielding plate 11, a second shielding plate 12, a third shielding plate 13, and a fourth shielding plate 14. Each shielding plate 11-1
Reference numerals 4 each are made of a metal plate, and have openings 110 to 140 for drainage having different shapes and positions, respectively, below. That is, drainage is provided below the plurality of shielding plates 11 to 14.
Drain openings 110-140 leading to holes 910 are
They are provided so as to be in alternate positions. Also,
The first shielding plate 11 has flange portions 11 for spot welding with the inner panel 912 on its side and bottom.
1,112. The second shielding plate 12 also has a flange portion. Hereinafter, the third shielding plate 13 and the fourth shielding plate 14 also have a flange portion (however, not shown).

As shown in FIG. 3, these shielding plates 1 are mounted in the cowl box 91 by spot welding 19. Further, as shown in FIGS. 2 and 3, the openings 110 to 140 are disposed so as to be at alternate positions. Each of the openings 110 to 140 communicates with the drain hole 910, and the drain groove 9101 is provided at the lowest portion.

The area of the opening 120 is determined by the size of the opening 110.
Less than. Hereinafter, the openings 130 and 140 are similarly reduced in order. In addition, these openings 110 to 140
Are larger than the area of the drain hole 910. The cowl box 91 has an air inlet 90 above as shown in FIG. Further, an air duct 920 communicating with the blower fan 92 (see FIG. 11) is provided below. The cowl box 91 includes an outer panel 911, an inner panel 912, and a side panel 913, and has a box-shaped elongated shape. Others are the same as the above-mentioned conventional example.

Next, the function and effect will be described. In the cowl structure of the present embodiment, as shown in FIGS. 1 to 4, a shielding plate 1 for preventing air outflow is provided near the drain hole 910. Therefore, the outside air 8 is drained by the shielding plate 1 into the drain holes 91.
The passage in the zero direction becomes narrow, and it becomes difficult for the water to flow out of the drain hole 910 to the outside. This allows the outside air to flow through the air duct 92.
The amount of air sent to the vehicle cabin through 0 increases, and ventilation performance improves.

On the other hand, as shown in FIGS. 1 and 4, the rainwater 7 entering the cowl box 91 together with the outside air is
Openings 110-140 for each drain below the drain and drain 9
The water flows out through the drain hole 910 through the drain hole 101.
Each of the drains 110 to 140 has a larger area than the drain hole 910. Further, each of the openings 110 to 140 is capable of quickly discharging rainwater.
Drainage grooves 9 provided on inner panel 912 so as to be smooth
Ru arranged to tare the lowest position of 101.

Embodiment 2 In this embodiment, as shown in FIGS. 5 and 6, the shielding plate 1 in Embodiment 1 is formed as a resin-integrated shielding plate 2 integrally formed with a top plate 20. Others are the same as the first embodiment. The above-mentioned resin-integrated shielding plate 2 is formed with the shielding plates 21 to 24 (FIG. 5) suspended below the top plate 20. Each shielding plate has an opening for drainage below it as in the first embodiment. The resin-integrated shielding plate 2 is made of a molded plastic such as polypropylene or nylon. Therefore, as compared with the metal shielding plate 1, it is easy to produce, has good appearance, is lightweight, and has excellent rust prevention.

As shown in FIG. 5, the resin-integrally formed shielding plate 2 is provided with a bolt 5 and a nut 51 with a sealing material 6 interposed therebetween.
Mounting hole 901 of cowl box 91
Inserted and fixed inside. Incidentally, reference numerals 201 and 90 in the figure
Reference numeral 3 denotes a mounting hole. Therefore, the resin integral molded shielding plate 2
This improves the mounting and maintenance of the device. This makes it possible to obtain a cowl structure that is more excellent in manufacturing and mounting workability than in the first embodiment. Other, Example 1
The same effect as described above can be obtained.

Embodiment 3 In this embodiment, as shown in FIGS. 7 and 8, a cowl louver 250 is used in place of the resin-integrally formed shielding plate 2 in the above-mentioned Embodiment 2.
Are integrally provided with shielding plates 251 to 254.
Others are the same as the second embodiment. The shielding plates 251 to 251
254 is located on the cowl box 91 as shown in FIG.
It is integrally formed under the cowl louver 250 attached to the part in a suspended state.

As shown in FIG. 8, the cowl louver 250 has a cutout opening 2502 (louver portion) for taking in air at a position aligned with the air introduction hole 90 of the cowl box 91. Note that reference numerals 2501 and 903 in the drawing indicate mounting holes. According to this example, the shield plates 251 to 254 can be easily and quickly mounted on the cowl box 91 simultaneously with the mounting of the cowl louver 250. In addition,
The same effect as in the second embodiment can be obtained.

Embodiment 4 In this embodiment, as shown in FIGS. 9 and 10, a shielding plate 3 having a bent shape is used in place of the shielding plate 1 in the first embodiment. Others are the same as the first embodiment. As shown in FIG. 9, the bent shielding plate 3 includes a first shielding plate 31 and a second shielding plate 31.
The shielding plate 32, the third shielding plate 33, and the fourth shielding plate 34 each have a substantially U-shaped bent shape protruding toward the drain hole 910. Further, each of the shielding plates 31 to 34 is shown in FIG.
As shown in FIG. 10, in the vicinity of the bent top, openings 310 to 340 for drainage are provided, respectively.

Each of the openings 310 to 340 is formed as shown in FIG.
As shown by 0, they are located alternately. In addition, each of the openings 310 to 340 is larger than the area of the drain hole 910.
The opening area is enlarged. In this example, since the inflowing outside air 8 hits the bent inner wall, the outside air hardly flows out from the drain hole 910 to the outside. Therefore, ventilation performance is further improved.

The bent-shaped shielding plate 3 is provided with the rainwater 7 and the opening 3.
The residence time in the vicinity of 10 to 340 is short, and the water flows out smoothly from the drain hole 910 to the outside. As a result, drainage properties are further improved. In addition, the same effects as in the first embodiment can be obtained.

[Brief description of the drawings]

FIG. 1 is an overall explanatory diagram of a cowl structure of an automobile according to a first embodiment.

FIG. 2 is a perspective view showing the shape and arrangement of shielding plates in the first embodiment.

FIG. 3 is a side view of the cowl structure of the vehicle according to the first embodiment.

FIG. 4 is an operation explanatory view of the cowl structure of the automobile according to the first embodiment.

FIG. 5 is an essential part cross-sectional view of the cowl structure of the automobile according to the second embodiment;

FIG. 6 is a perspective view of a cowl structure of the automobile according to the second embodiment.

FIG. 7 is an essential part cross-sectional view of a cowl structure of an automobile according to a third embodiment;

FIG. 8 is a perspective view of an automobile cowl structure according to a third embodiment.

FIG. 9 is an operation explanatory view of the cowl structure of the automobile according to the fourth embodiment.

FIG. 10 is a perspective view showing an arrangement state of a bent shielding plate in a fourth embodiment.

FIG. 11 is an overall explanatory view of a conventional cowl structure.

FIG. 12 is a perspective view of a conventional cowl box.

FIG. 13 is a perspective view showing a conventional example in which a cowl box is mounted on a front portion of a vehicle.

[Explanation of symbols]

 1. . . Shielding plate, 11, 12, 13, 14. . . First to fourth shielding plates, 110, 120, 130, 140. . . Opening, 2. . . 2. resin-integrated shielding plate; . . 6. curved shielding plate, . . Rainwater, 8. . . 8. outside air; . . Cowl structure, 91. . . Cowl box, 910. . . Drain hole,

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-213475 (JP, A) JP-A-3-208781 (JP, A) JP-A-62-157781 (JP, A) 112913 (JP, U) Fully open 1988-76510 (JP, U) Fully open 1987-110014 (JP, U) Fully open, 56-127173 (JP, U) Fully open, 63-173816 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B62D 25/08

Claims (2)

(57) [Claims] 1. A cowl box is provided at the front of a car,
In a cowl structure provided with water drain holes at both ends of the cowl box, the cowl box includes a water drain hole between the water drain hole and the air duct and near the water drain hole.
A plurality of shielding plates for preventing air from leaking out , and drain openings leading to the drain holes are provided below the plurality of shielding plates so as to be at alternate positions. A cowl structure for an automobile, characterized in that: 2. The cowl structure according to claim 1, wherein the shielding plate has a bent shape protruding toward the drain hole.