JP2550261Y2 - Air box structure for vehicles - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air box structure for a vehicle, and more particularly to an air box structure for a vehicle in which moisture is prevented from entering the vehicle interior with the outside air through an outside air inlet.

[0002]

2. Description of the Related Art As a conventional air box structure for a vehicle, for example, there is one as shown in FIGS. That is, as shown in FIG. 6, the vehicle air box structure includes an engine hood 1 and a windshield 2.
As shown in FIG. 7, the cowl top panel 3 and the dash upper panel 4 are joined to form a space 5, and a cowl cover 6 is provided above the cowl top panel 3. Are arranged.

Then, the outside air A introduced from the intake port 6a of the cowl cover 6 and the opening 3a of the cowl top panel 3
Pass through the space portion 5 and are introduced into the vehicle interior through the outside air inlet 4a of the dash upper panel 4. The outside air inlet 4a is separated from the lower side of the opening 3a to the side so that water (liquid) w that has entered together with the outside air A from the opening 3a does not enter the vehicle interior. Has a flange wall 7 of a predetermined height projecting upward.

[0006] As shown in FIG.
The water W that has flowed into the space portion 5 flows through the bottom portion of the dash upper panel 4, and flows out of the vehicle through a communication opening 8 a formed at a lower portion of the side panel 8 and a drainage opening 9 a formed at the hood ridge reinforcement 9. Is discharged.

[0005] Examples of this type include those described in, for example, JP-A-2-3773.

[0006]

However, in such a conventional air box structure for a vehicle, the opening 3
There is a possibility that the water w that has entered together with the outside air A from above a enters the vehicle interior through the outside air inlet 4a over the flange wall 7.

Therefore, as shown by a two-dot chain line in FIG. 7, a shielding plate member 10 extending downward is provided on the lower surface of the cowl top panel 3 between the opening 3a and the outside air inlet 4a. It is also conceivable to adopt a structure for preventing water w from entering from the outside air inlet 4a. However, when this structure is employed, there is a problem that the number of parts increases due to the provision of the shielding member 10.

Therefore, an object of the present invention is to provide an air box structure for a vehicle which can effectively prevent water from entering an outside air inlet without increasing the number of parts.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem. An opening for introducing outside air is formed on an upper surface of an air box having a box-shaped cross section, and the air enters through the opening. An outside air inlet for guiding the outside air into the vehicle interior is opened at a position offset from the opening at the bottom of the air box, and is projected upward from the bottom of the air box around the outside air inlet. A flange wall is provided, and a wiper motor reinforce to which a wiper motor is attached is provided over the engine room side vertical wall portion and the upper surface portion of the air box. The wiper motor reinforce has an air box opening and an outside air inlet. It is characterized by a vehicle air box structure in which a shielding plate portion extending downward from the upper surface portion is formed at a position between them.

[0010]

According to this means, the outside air introduced from the opening provided on the upper surface of the air box is introduced into the vehicle interior through the outside air inlet. At this time, the water that has entered the air box together with the outside air is blocked by the shield plate provided on the wiper motor reinforcement and the flange wall protruding from the bottom of the air box. Therefore, water does not enter the vehicle interior from the outside air inlet.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments.

FIGS. 1 to 3 show a first embodiment of the present invention. The same parts as those of the conventional mounting structure will be described with the same reference numerals.

First, the structure will be described. In this embodiment,
The cowl top panel 3 and the dash upper panel 4 are joined to form a space 5 of an air box 11 having a box-shaped cross section. On the engine room side wall 3b of the cowl top panel 3, a motor shaft insertion hole 3d into which a motor shaft of a wiper motor 13 described later is inserted is formed. A plurality of insertion holes 3c into which screws for mounting are inserted are formed around the motor shaft insertion hole 3d.
A cowl cover 6 is provided above the cowl top panel 3. The cowl cover 6 has an intake port 6a for introducing outside air D from outside the vehicle. An opening 3a is formed in the upper surface 11a of the air box 11 at a position corresponding to the intake port 6a.

The bottom portion 11b of the air box 11
, An outside air inlet 4a is opened at a position offset from the opening 3a. A flange wall 7 having a predetermined height protrudes upward from the bottom surface 11b around the outside air inlet 4a. The flange wall 7 makes a round along the outer peripheral edge of the outside air inlet 4a, and has a substantially cylindrical shape.

Further, the opening 3 in the air box 11
A wiper motor reinforcement 12 is disposed between the air inlet 4a and the outside air inlet 4a. The wiper motor reinforcement 12 abuts and is fixed in the air box 11 from the engine room side vertical wall 3b of the cowl top panel 3 to the upper surface 11a.

The motor mounting plate 12a of the wiper motor reinforcement 12 is provided with a motor mounting hole 12b for mounting the wiper motor 13 and a motor shaft hole 12c into which the shaft of the wiper motor 12 is inserted. At the lower end of the motor mounting plate portion 12a, an interposed flange portion interposed and fixed between the cowl top panel 3 and the dash upper panel 4
12d is formed.

Further, a first shielding plate portion 12e and a second shielding plate portion 12f extend continuously on both left and right sides of the motor mounting plate portion 12a. Due to this extension, a substantially U-shaped shape is formed by the first shielding plate portion 12e, the motor mounting plate portion 12a, and the second shielding plate portion 12f. The first flange 12g and the second flange 12h are respectively provided on the end surfaces of the first shielding plate 12e and the second shielding plate 12f, which are in contact with the upper surface 11a of the air box 11.
Are respectively extended in the left-right direction. The height B from the upper side to the lower side of the first shield 12e is set to be smaller than the height C from the upper side to the lower side of the second shield 12f. The height C of the second shielding plate portion 12f is
At the time of attachment, the position of the lower side of the second shielding plate portion 12f is set to be slightly lower than the position of the front end of the flange wall 7.

In assembling the air box 11, the wiper motor reinforcement 12 is mounted at a position between the opening 3a of the air box 11 and the outside air inlet 4a. Therefore, the second shielding plate 12f is set near the flange wall 7 on the opening 3a side of the outside air inlet 4a. That is, the interposed flange portion 12 d is interposed and fixed between the cowl top panel 3 and the dash upper panel 4. At this time, the motor mounting plate portion 12a is joined to the engine room side vertical wall portion 3b of the cowl top panel 3. The first flange portion 12g and the second flange portion 12h are respectively
a. In this state, the wiper motor 13 is attached from the outside of the air box 11 to the mounting hole 12b provided in the motor mounting plate portion 12a via an insertion hole 3c of the engine room side vertical wall portion 3b by a screw (not shown) or the like. It is attached and connected with the wiper mortar force 12. Thus, the wiper motor reinforcement 12 is mounted in the air box 11. By this attachment, the second shielding plate portion 12f is formed near the flange wall 7 on the side of the opening 3a of the outside air inlet 4a so as to extend downward from the upper surface portion 11a.

Next, the operation of the automobile air box structure having the above configuration will be described. Now, cowl cover 6
The outside air D introduced from the air inlet 6a and the opening 3a of the cowl top panel 3 passes through the space 5 and is introduced into the vehicle interior through the outside air inlet 4a of the dash upper panel 4. Water W that enters the space 5 together with the outside air D
First, the water abuts on the first shielding plate portion 12e, and a certain amount of water w falls on the bottom surface portion 11b of the air box 11. Since the height B of the first shield plate 12e is set smaller than the height C of the second shield plate 12f, the opening area between the first shield plate 12e and the bottom surface 11b of the air box is set. Is large and the distribution resistance is small. For this reason, the flow velocity of the outside air D is low, and the fluid resistance in the flow path between the first shielding plate portion 12e and the second shielding plate portion 12f is small.

Next, the outside air D comes into contact with the second shielding plate portion 12f, and a certain amount of water w falls on the bottom surface portion 11b of the air box 11. Then, the outside air D passes under the second shielding plate portion 12f and reaches near the flange wall 7 of the outside air inlet. At this time, the second shielding plate 12f is connected to the opening 3a of the outside air inlet 4a.
The side of the flange wall 7 is set near the flange wall 7, and the position of the lower side of the second shielding plate 12 f is set slightly lower than the position of the tip of the flange wall 7. For this reason, the flow path of the outside air D is changed from the lateral direction to the upward direction in the vicinity of the flange wall 7 as shown in FIG. However, since the remaining water w contained in the outside air D is subjected to its own weight, it cannot cross the flange wall 7 along the flow path. The remaining water w comes into contact with the flange wall 7 and falls on the bottom surface 11b of the air box 11. Therefore, the water w does not directly enter the vehicle interior from the outside air inlet 4a together with the outside air D.

The outside air D from which the water w has been removed in this way is
The air is introduced into the vehicle interior from the outside air inlet 4a.

Therefore, in this embodiment, the first shielding plate portion 12e
The height of the opening between the first shielding plate portion 12e and the bottom surface portion 11b by increasing the height c of the first shielding plate portion without significantly increasing the external air introduction resistance. 12e
Water w can be prevented from entering in two stages, namely, and the second shielding plate portion 12f.

On the other hand, the water W accumulated on the bottom surface 11b is discharged out of the vehicle through a drain opening (not shown). At this time, since the flange wall 7 having a predetermined height protrudes upward from the outside air inlet 4a, the water w flowing on the bottom surface 11b of the air box 11 does not flow into the vehicle interior.

As described above, in the vehicle air box structure of the first embodiment, the first shield plate 12e and the second shield plate 12e are attached to the motor mounting plate 12a of the wiper motor reinforcement 12.
Since the shielding plate portion 12f and the wiper motor reinforcement 12 are integrally formed, it is possible to effectively prevent the water w from entering the vehicle interior without increasing the number of components. In addition, the wiper motor reinforcement 12 is disposed over the engine room side vertical wall and the upper surface, and has a substantially U-shape. The rigidity of a portion where the wiper motor 13 is mounted is improved, so that noise and vibration are reduced. Can be suppressed.

FIGS. 4 and 5 show a vehicle air box structure according to a second embodiment of the present invention. In the wiper motor reinforcement 12 of this embodiment, the second flange portion 12h of the wiper motor reinforcement 12 of the first embodiment is further extended by an extension portion 12j, and the shielding flange portion 12i covering the upper side of the communication opening 8a is extended. It is formed at the tip of the setting portion 12j.

The water W flowing from the cowl top panel 3 into the space 5 flows through the bottom surface 11b of the air box 11,
The water is discharged to the outside of the vehicle from a communication opening 8a formed in a lower portion of the side panel 8 and a drainage opening 9a formed in the hood ridge reinforcement 9. At this time, due to snow etc.
When the inflow resistance in the opening 3a increases, air is sucked in through the drainage opening 9a and the communication opening 8a, so that the backflow of the water W occurs. However, since the upper side of the communication opening 8a is covered by the shielding flange 12i, the backflowing water w is shielded and the outside air introduction port 4a is blocked.
It does not invade the passenger compartment. Further, when the vehicle rolls, the water W near the communication opening 8a jumps up. In this case, however, the water W jumped up is shielded by the shielding flange 12i and flows into the vehicle interior from the outside air inlet 4a. Absent.

Further, the wiper motor reinforcement 12 of this embodiment includes the motor mounting plate portion 12a and the first shielding plate portion 12a.
e, because the connection with the second shielding plate portion 12f has a substantially U-shape, and the extending portion 12j of the shielding flange portion 12i is also joined to the cowl top panel 3 and the dash upper panel 4. Further, the rigidity of the portion where the wiper motor 13 is mounted is improved, and noise and vibration can be suppressed. Further, since the shielding flange 12i is integrally formed with the wiper motor reinforcement 12, it is possible to effectively prevent water w from entering without increasing the number of parts.

The other constructions and operations are the same as those of the first embodiment, and the description is omitted.

In the vehicle air box structure of the first and second embodiments, the first and second shielding plates 12e and 12f are employed as shielding plates. If the water w can be prevented from entering the passenger compartment by appropriately adjusting the lengths B and C from the lower side to the lower side, one of the shielding plates may be omitted. In this case, the motor mounting plate 12a
The shape of the L-shape or the like is exhibited by the and the shielding plate portion, and the rigidity of the portion where the wiper motor 13 is attached is improved as compared with the conventional structure.

The lower side of the height C of the second shielding plate portion 12f is set to be substantially the same as the height of the front end of the flange wall 7.
The height is not particularly limited to this height, and may be any size as long as the flow path of the outside air D is secured and the water w can be reliably prevented from entering the outside air introduction port 4a. .

[0031]

As described above, according to the present invention, the shield plate extending downward from the upper surface of the air box is formed on the wiper mortar force, so that the number of parts can be increased without increasing the number of parts. Water intrusion can be effectively prevented.

Further, since the wiper motor reinforcement is provided over the vertical wall portion and the upper surface portion of the air box on the engine room side, the rigidity of the portion to which the wiper motor is attached is improved, and noise and vibration can be suppressed. Can,
It has a practically useful effect.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a vehicle air box structure according to a first embodiment of the present invention.

FIG. 2 is an explanatory cross-sectional view showing a structure of a vehicle air box according to a first embodiment of the present invention and showing a flow of outside air D;

FIG. 3 is a sectional view taken along line EE in FIG. 2;

FIG. 4 is a perspective view showing a wiper motor reinforcement in a vehicle air box structure according to a second embodiment of the present invention.

FIG. 5 is a sectional view showing a vehicle air box structure according to a second embodiment of the present invention, corresponding to FIG. 2 of the first embodiment;

FIG. 6 shows a conventional example and is an overall view of a vehicle.

FIG. 7 shows a conventional vehicle air box structure, in which outside air A
FIG. 3 is an explanatory cross-sectional view showing a flow of water W entering with the outside air A.

[Explanation of symbols]

 3 Cowl Top Panel 3a Opening 3b Engine Room Side Vertical Wall 4 Dash Upper Panel 4a Outside Air Inlet 7 Flange Wall 11 Air Box 11a Top 11b Bottom 12 Wiper Motor Reinforce 12e First Shield (Shield) 12f Second shield plate (shield plate) 13 Wiper motor

Claims (1)

(57) [Scope of request for utility model registration] An opening for introducing outside air is formed in an upper surface of an air box having a box structure in cross section, and an outside air inlet for guiding outside air entering from the opening into a vehicle interior is formed on a bottom portion of the air box. Opened at a position offset from the opening, around the outside air introduction port, provided a flange wall projecting upward from the bottom of the air box, the engine room side vertical wall portion of the air box and the upper surface portion A wiper motor reinforcement to which the wiper motor is attached is provided, and the wiper motor reinforcement has a shielding plate extending downward from the upper surface at a position between the air box opening and the outside air inlet. Characteristic air box structure for vehicles.