JPH0354078A - Air box structure for automobile - Google Patents

Abstract

PURPOSE:To prevent suction of drain, e.g. rainwater, through a blower open air intake port by a method wherein a member is disposed in a structure in closed cross section with which an air box is formed in a manner that a side surface is extended across the structure. CONSTITUTION:An air box has a structure A in closed cross section formed with a dash upper 1 and a cowl top 2, and a blower open air intake port 4 is formed in the under surface of a side in the direction of the width of a car. In this case, a cowl top side (member) 9 extending across the interior of the structure A is mounted to a part further outside in the direction of the width of a car than the open air intake port 4 of the structure A. The member 9 is formed in the shape of a channel having a front surface 10 and side surfaces 11 and 12, flanges 13 and 14 for joint are connected to the side surfaces 11 and 12, and the front surface 10 is served as reinforcement for mounting a wiper motor 15. The opening air passage port 16 is formed in the side surface 11, and the open air introduction port 17 in the upper part of a part where the member 9 of the structure A.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to the structure of an air box, which is an outside air introduction passage for an automobile.

2. Prior Art A conventional air bonox has a structure shown in FIG. 12.13.

In this air box, a dash anova 1 and a cowl top 2 form a closed cross-section structure A that extends in the vehicle width direction. Blower outside air intake 4 on the bottom of the side
is provided.

An annular flange 5 opening upward is fixed to the blower outside air intake port 4 to prevent rainwater or the like that has entered the inside of the closed section structure A from being easily sucked in from the blower outside air intake port 4. In the figure, 6 is a cowl top side joined to the end of the closed cross-section structure A, 7 is a reinforcement for attaching a wiper motor, and 8 is a recess formed in the cowl top side 6 for drainage.

This similar structure is described in, for example, Japanese Utility Model Application Publication No. 58-115411. This is disclosed in Japanese Utility Model Application Publication No. 57-29409.

Problems to be Solved by the Invention In the above-mentioned conventional Air Bonox, for example, when the outside air inlet 3 is blocked by snow, the inside of the closed section structure A becomes negative pressure, and the waste water flows backward from the recess 8. There is a problem in that the air is sucked into the blower outside air intake port 4. In the case of the above-mentioned air box, an annular flange 5 is disposed at the blower outside air intake port 4, but this annular flange 5 alone is not sufficient to prevent drainage from being sucked in.

Further, in the air box, a wiper motor is attached to the vehicle front side surface of the closed cross-section structure A (the front surface of the cowl top 2), but if the mounting rigidity is weak, vibrations and noise are likely to occur. In the case of a conventional air box, in order to improve this mounting rigidity, it is necessary to join a plate-shaped reinforcement 7 for attaching the wiper motor to the closed cross-section structure A, or to increase the plate thickness of the cowl top 2. Otherwise, there is a problem that sufficient rigidity cannot be obtained.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an air box structure for an automobile that can prevent drainage water from being sucked in from a blower outside air intake and can improve the mounting rigidity of a wiper motor.

Means for Solving the Problems The present invention provides an air box in which an outside air inlet and a blower outside air intake are formed in a closed cross-section structure extending in the vehicle width direction.
A member having a side surface that crosses the closed cross section between the outside air inlet of the closed cross section structure and the blower outside air intake port and a front surface that runs along the front side of the closed cross section structure is disposed inside the closed cross section structure. An outside air passage port is formed on the side surface of the member, and the front surface is joined to a closed cross-section structure to serve as a reinforcement for attaching a wiper motor.

The outside air entering the closed cross-section structure through the working outside air inlet is drawn into the blower outside air intake through the outside air passage port of the member. Rainwater or the like that enters the inside of the closed cross-section structure from the outside air inlet is blocked by the side surface of the member and is no longer directly sucked in through the blower outside air intake. Further, since the front surface of the member functioning as a reinforcement for attaching the wiper motor is supported by the side surface that crosses the closed cross-section structure, the wiper motor attached to the closed cross-section structure is rigidly supported and reinforced.

EXAMPLES Hereinafter, examples of the present invention will be described based on FIGS. 1 to 11. Note that the same parts, including those shown in FIGS. 12 and 13, will be described using the same reference numerals.

First, a first embodiment of the present invention will be described.

In Fig. 1.2, the air box of this embodiment has a closed cross-section structure A composed of a dash upper l and a cowl top 2, similar to that shown in Fig. 12.13. A blower outside air intake 4 is provided on the lower surface (dash upper 1) of the side part in the vehicle width direction of the body A, and an annular flange 5 is fixed to this blower outside air intake 4 portion.

A cowl top side 9 as a member that crosses the inside of the closed cross-section structure A is attached to a portion of the closed cross-section structure A outside the blower outside air intake 4 in the vehicle width direction (on the right side in FIG. 2). This cowl subside 9 is formed into a planar channel shape, a surface forming the base of the channel shape is a front surface 10, and a pair of surfaces extending from the base of the channel shape are side surfaces 11 and 12. .

Joining flanges 13.14 are formed at the tip and upper ends of the side surfaces 11.12, respectively, and the cowl top side 9
When attached to the closed cross-section structure A, the flange 13 is joined to the rear surface of the closed cross-section structure A, that is, the rising wall of the dash upper 1, and the flange 14 is joined to the upper surface of the closed cross-section structure A. That is, it is joined to the upper surface of the cowl top 2. In FIG. 1, the front side of the vehicle is indicated by arrow F.

Further, when attaching the cowl top side 9 to the closed cross-section structure A, the front surface lO is joined to the front surface of the closed cross-section structure A, that is, the front surface of the cowl top 2, and the side surface 1
1.12 crosses the cross section of the closed cross section structure A so as to interrupt it. The part where the front surface 10 of the closed cross-section structure A is joined is the attachment part of the wiper motor I5, and the wiper motor 15 is attached to this part of the closed cross-section structure A and the front surface 10 on the back side with bolts and nuts (Fig. (not shown)
It is tightened and fixed. Therefore, the front surface 10 of the cowl top side 9 functions as a reinforcement for mounting the wiper motor 15. Further, a hood hinge (not shown) is attached to the upper surface of the side part of the closed cross-section structure A, and in this embodiment, one flange l4 of the cowl top side 9 is a reinforcement for attaching this hood hinge. The hood hinge is tightened and fixed to the closed section structure A and the flange 14 with bolts and nuts (not shown).

The side surface 11 of the cowl top side 9 has outside air passage date 1.
6 is formed, and an outside air inlet l is formed on the upper surface of the portion of the closed section structure A where the cowl knob side 9 is attached.
7 is formed, and the side surface 11 of the cowl top side 9 crosses the closed cross section between the outside air inlet 17 of the closed cross section structure A and the blower outside air intake 4. An outside air inlet 3 is also formed on the upper surface of the central part in the vehicle width direction of the closed section structure A, but the outside air is mainly supplied from the outside air inlet 17 on the side in the vehicle width direction near the blower outside air intake 4. The air enters the closed cross-section structure A, passes through the outside air passage port 16 in the cowl top side 9, and is drawn into the blower outside air intake port 4.

Further, the outside air passage port l6 of the cowl top side 9 is a second
As shown in the figure, the outside air inlet I7 formed in the closed cross-section structure A is offset by a distance rlLd in the vehicle longitudinal direction with respect to the blower outside air intake 4, and the outside air inlet I7
The rainwater etc. that have entered from the cowl knob side 9 are blocked by the side surface 11 of the cowl knob side 9, and are prevented from directly entering the blower outside air intake port 4. Furthermore, a gap is formed between the bottom wall (general surface of the dash upper l) of the closed section structure A and the lower end of the cowl top side 9, and the closed section structure A is Rainwater or the like that has entered the inside passes through this gap and is discharged from a predetermined position on the side of the closed section structure A to the outside of the vehicle.

In the case of the air box according to the present invention, since the cowl top side 9 as a member is attached so as to cross the internal cross section of the open section structure A, the rigidity of the closed section structure A itself is increased, especially in the vehicle width direction. Side front biller 1
The rigidity of the joint with 8 is higher than that of the conventional one. Also,
In the case of this embodiment, since the outside air inlet 17 is provided in the vicinity of the blower outside air intake 4, the passage resistance of the introduced air is smaller than in the conventional case if the cross-sectional area is the same. Become. Therefore, it is possible to make the cross-sectional area of the closed cross-section structure A smaller than that of the conventional structure, thereby increasing the degree of freedom in layout within the vehicle interior. Furthermore, as in this embodiment, an outside air inlet 17 is formed on the upper surface of the side portion in the vehicle width direction of the closed section structure A, and rainwater etc.
Since it passes through a predetermined position on the bottom wall of the closed cross-section structure A and is discharged to the outside of the vehicle, it is less likely that rainwater or the like will run along the top surface of the closed cross-section structure A and enter the engine room.

In the figure, numeral 19 is a wiper motor mounting hole on the closed cross-section structure A and the cowl top side 9, and 20 is a hood hinge mounting hole on the cowl top side 9.

Further, the shape of the cowl top side 9 is not limited to that shown in FIGS. 1 and 2, and various shapes such as those shown in FIGS. 3 to 6 can be adopted, for example.

However, in this case, the cowl tongue side 9 includes the side 11 that crosses the closed cross section between the outside air inlet 17 of the closed cross section structure A and the blower outside air intake 4, and the front side surface of the closed cross section structure A. The condition is that the front surface 10 is along the front surface 10.

The one shown in FIG. 3 has an upper surface 21 and a rear surface 22 in addition to the side surface 11 and the front surface 10, and the one shown in FIG. 2l and a side surface l2, each of which has an outside air passage port 2 on the upper surface 21 that can communicate with the outside air introduction port 17 of the closed cross-section structure A.
3 and a hood hinge attachment hole 20 are formed. The one shown in FIG. 5 has a lower surface 25 roughly added to the one shown in FIG.
is formed. Moreover, the one shown in FIG. 6 is obtained by removing the upper surface 2l from the one shown in FIG. 5.

Next, a second embodiment of the present invention will be described.

7 and 8, in the air box of this embodiment, a closed cross-section structure A is formed by a cowl top 27 and a dash upper 28, and a dash upper cross member 29 is attached to the rear surface of the closed cross-section structure A. are joined.

The dash upper cross member 29 has a substantially U-shaped cross section, and forms a closed cross section B together with the rear surface of the closed cross section structure A. A blower outside air intake port 4 is formed on the rear side surface of the side portion in the vehicle width direction of the closed cross-section structure A, and a portion of the dash upport member 29 corresponding to the blower outside air intake port 4 is formed in the vicinity of the blower outside air intake port 4. A blower outside air intake 30 is formed on the lower surface, and a blower 3l is attached to the lower surface of the blower outside air intake 30.

Reference numeral 32 denotes a Bonox-shaped member, and this member 32 is attached to the inner surface of the side portion of the closed cross-section structure A in the vehicle width direction. The member 32 has a front surface 10 that is a closed cross-section structure A.
The rear surface 22 is connected to the front surface of the closed section structure A.
The side surface l1 is joined to the rear surface of the closed cross-section structure A.
It has a shape that crosses the internal cross section of. Side surface l1
An outside air passage port 16 is formed in the rear surface 22, and an outside air passage port 33 communicating with the blower outside air intake port 4 of the closed section structure A is formed in the rear surface 22. The air introduced into the inside of the closed cross section structure A passes through the outside air passage ports 16 and 33 of the member 32, and further passes through the outside air intake port 4 of the closed cross section structure A and the outside air intake port 30 of the dash upper cross member 29. After that, it is introduced into the blower 3L. A gap is provided between the upper and lower surfaces of the member 32 and the inner surface of the closed cross-section structure A,
Rainwater, etc. that has entered the inside of the closed section structure A from the outside air intake (not shown) at the center in the vehicle width direction passes through this lower gap and is discharged from a predetermined position on the side of the closed section structure A in the vehicle width direction to the outside of the vehicle. is discharged. Even if the amount of rainwater etc. entering the inside of the closed section structure A increases somewhat, the rainwater etc. will be blocked by the side surface l1 of the member 32 up to the height of the outside air passage port 16, so the blower outside air intake will be interrupted. It is less likely that the outside air will be sucked in through the mouth 4. Further, the front surface 10 of the member 32 is used as a reinforcement for attaching the wiper motor 15 as in the first embodiment described above, so that the wiper motor 15 is rigidly attached to the closed cross-section structure A.

Also in the case of the air box of this embodiment, the member 32 is
Not limited to the one shown in FIGS. 7 and 8, for example, a joining flange 13 is formed at the rear end part as shown in FIGS. It is also possible to adopt other shapes, such as those that are bonded to the surface. In addition, 34 in the figure indicates a link for wiper operation.

Effects of the Invention As described above, according to the present invention, the member is arranged so that the side surface crosses the closed cross-section structure, and the outside air is sucked in through the outside air passage hole on the side surface, so that no air enters the closed cross-section structure. Rainwater and other drainage water will no longer be sucked directly into the blower's outside air intake. Furthermore, the front surface of the member is used as a reinforcement for mounting the wiper motor, and this front surface is supported by the side surface of the member that crosses the closed cross-section structure, thereby reliably increasing the mounting rigidity of the wiper motor.

Furthermore, according to the present invention, since the side surface of the member crosses the closed cross-section structure, the rigidity of the closed cross-section structure itself is also increased.

Furthermore, since one component can simultaneously prevent rainwater from being sucked in and support and reinforce the wiper motor, problems such as an increase in the number of components will not occur.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the first embodiment of the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Figs. FIG. 7 is a perspective view showing a second embodiment of the present invention, and FIG. 8 is a perspective view showing a modification of FIG. 7.
9 is a perspective view showing a modification of the member of the second embodiment, FIG. 10 is a sectional view taken along line X-X in FIG. 9, and FIG. 11 is a sectional view of FIG. A cross-sectional view along the line XI-XI,
FIG. 12 is a perspective view showing the conventional technology, and FIG. 13 is I2.
It is a sectional view taken along the α-α line in the figure. A...Closed section structure, 3...Outside air inlet, 4...
Blower outside air intake, 9... Cowl top side (
member), 10...Front surface, 11...Side surface, 16...Outside air passage port, 17...Outside air introduction port, 32
...Me Figure 1 J7-...One member Figure 7 Figure 15 Figure 8 Figure 9 Figure 11 Figure 12 Figure 3

Claims (1)

[Claims] (1) In an air box in which an outside air inlet and a blower outside air intake are formed in a closed cross-section structure extending in the vehicle width direction, the outside air inlet of the closed cross-section structure and the outside air inlet of the closed cross-section structure are provided inside the closed cross-section structure. A member having a side surface that crosses the closed section between the blower outside air intake ports and a front surface that runs along the front side surface of the closed section structure is provided, and an outside air passage port is formed on the side surface of the member, and the front An air box structure for an automobile, characterized in that a surface is joined to a closed cross-section structure to serve as a reinforcement for mounting a wiper motor.