JPH10129524A - Automobile air box structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automobile air box structure capable of reducing back and forth width. SOLUTION: This air box structure surrounds an air intake 6 in a dash upper 1 by a water barrier panel 9 in which its upper and lower end are coupled to a cowl top 8 and a bottom face part 2 and its both the end parts in the vehicular width are coupled to a rear face part 3. Openings 13, 14 for introducing air is formed on the water barrier panel 9. Providing the water barrier panel 9 to only the peripheral part of the air intake 6 reduces the back and forth width of an air box E except the peripheral part of the air intake 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air box structure.

[0002]

2. Description of the Related Art A conventional automobile air box structure is provided with a partition wall extending in the vehicle width direction in a dash upper having an open-top cross-sectional shape, and a front-side drainage space and a rear-side ventilation space. And are formed (as a similar technology,
See JP-A-6-74570). A plurality of openings for introducing air into the ventilation space are formed in the partition wall. An air inlet is formed on the bottom surface of the ventilation space, and the air introduced into the ventilation space from the opening of the partition wall can be supplied into the vehicle from the air intake.

[0003]

However, in such a conventional technique, it is necessary to form a partition wall over the entire width of the dash upper in the vehicle width direction. Over,
The arrangement of parts in an engine room and a vehicle room located before and after the air box is restricted. If the front and rear width of the air box can be reduced even partially, it will be very advantageous in terms of parts arrangement. Therefore, the development of a structure that can reduce the front and rear width of the air box is currently awaited.

The present invention has been made by paying attention to such a conventional technique, and provides an air box structure of an automobile which can reduce the front-rear width.

[0005]

According to the first aspect of the present invention,
The air intake in the dash upper is surrounded by a water-impervious panel whose upper and lower ends are connected to the cowl top and the bottom of the dash upper and both ends in the vehicle width direction are connected to the rear surface of the dash upper. An opening for introducing air is formed.

According to the first aspect of the present invention, since the impermeable panel is provided only in the peripheral portion of the air intake, the front and rear width of the air box can be reduced except for the portion. Therefore, the degree of freedom in arranging components in the engine room and the vehicle room located before and after the air box is improved. Also,
An opening for introducing air is also formed in the impermeable panel, so that air can be reliably taken into the air intake. Furthermore, since the water-impervious panel is connected to the upper and lower cowl tops and the bottom surface, the support of the windshield provided on the upper part of the cowl top is also ensured.

According to a second aspect of the present invention, the water-shielding panel has a first vertical surface at the center in the vehicle width direction and a second vertical surface at the end in the vehicle width direction facing each other at a predetermined angle via the bent portion. And a first vertical surface portion and a second vertical surface portion for introducing air.
An opening and a second opening are respectively formed.

According to the second aspect of the present invention, since the water-blocking panel has a bent shape facing at a predetermined angle, the support rigidity of the windshield is high.

According to a third aspect of the present invention, the second vertical surface portion is formed along the front-rear direction, the first vertical surface portion is formed in an oblique state longer than the second vertical surface portion, and the first vertical surface portion is formed in an oblique state. The total ventilation area of the formed first opening is set to be larger than the second opening formed in the second vertical surface portion.

According to the third aspect of the present invention, the first vertical surface portion on the center side in the vehicle width direction is formed in an oblique state longer than the second vertical surface portion, and the first opening has a larger ventilation area than the second opening. Is set to be large, the intake efficiency to the air intake is improved. That is, in the air box, the initial amount of air introduced is larger at the center in the vehicle width direction than at the end. Therefore,
By ensuring a large ventilation area of the first opening on the center side in the vehicle width direction, it is possible to improve the efficiency of intake to the air intake.

According to a fourth aspect of the present invention, the plurality of first openings are formed in the horizontal direction via the vertical rail.

According to the fourth aspect of the present invention, even if the first opening is formed, there is a vertical bar, so that the rigidity of the first vertical surface in the vertical direction does not decrease so much.

[0013] In a fifth aspect of the present invention, the plurality of second openings are formed in the vertical direction via the horizontal rail.

According to the fifth aspect of the present invention, even if the second opening is formed, there is a horizontal rail, so that the rigidity of the second vertical surface portion in the front-rear direction does not decrease so much. Therefore, the cross section rigidity of the air box can be maintained. In addition, since the whole second vertical surface portion is close to the bent portion of the impermeable panel, the rigidity in the vertical direction does not decrease so much.

According to a sixth aspect of the present invention, a downward bead portion extending substantially in the front-rear direction is formed above the air intake of the cowl top.

According to the sixth aspect of the present invention, since the downward bead portion extending substantially in the front-rear direction is formed in the cowl top above the air intake, the bead is introduced from the first opening and the second opening facing each other. Prevents turbulence caused by air collision. That is, since the flow of the air introduced from the first opening and the second opening is rectified and converted downward by the bead portion, the intake efficiency to the air intake located below the bead portion is improved.

According to a seventh aspect of the present invention, a reinforce for forming a closed cross section along the vehicle width direction is provided on the upper surface of the cowl top, and the lower end of the front window glass is supported by the reinforce. .

According to the seventh aspect of the present invention, a downward load from the windshield can be received by the closed section formed by the reinforce, so that the support rigidity of the windshield is improved.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. In the drawings, X is the vehicle width direction, and Y is the front-rear direction.

Reference numeral 1 denotes a dash upper, which has a cross-sectional shape including a bottom surface portion 2, a rear surface portion 3, and a cowl front 4 as a "front surface portion". A drain groove 5 is formed in the bottom surface 2 along the cowl front 4. An air inlet 6 is provided near the end of the bottom portion 2 in the vehicle width direction. A cowl top 8 is provided on the upper part of the dash upper 1 along the vehicle width direction with an open portion 7 left between the upper end of the cowl front 4.

The dash upper 1 and the cowl top 8
Thereby, an air box E having an open top is formed. The front and rear widths D of the air box E are large at the periphery of the air inlet 6, and the front and rear widths d are small at other portions. The reason that the front-rear width d other than the peripheral portion of the air inlet 6 is reduced and the front-rear width D of the peripheral portion of the air inlet 6 alone is maintained as described above is that the impermeable panel 9 is provided there. Because there is. The air box E
Is closed by a cowl side (not shown), and a drain port (not shown) corresponding to the drain groove 5 is provided on the cowl side.

The impermeable panel 9 has a shape having a first vertical surface portion 11 and a second vertical surface portion 12 bent at a predetermined angle via the bent portion 10, and surrounds the air inlet 6. Installed in. The upper and lower ends of the water shield panel 9 are respectively connected to the cowl top 8 and the bottom surface 2, and both ends in the vehicle width direction are connected to the rear surface 3.

The second vertical surface portion 12 of the water shield panel 9 is in a state extending in the front-rear direction, and the first vertical surface portion 11 is in an oblique state longer than the second vertical surface portion 12. The first vertical surface portion 11 and the second vertical surface portion 12 face each other at a predetermined angle as described above, and a first opening 13 and a second opening 14 for introducing air A are provided respectively. ing. The first opening 13 is provided with three vertical bars 15 in the horizontal direction.
One is formed. Two second openings 14 are formed in the vertical direction via the horizontal rail 16. As is clear from the figure, the total ventilation area of each first opening 13 is set larger than the total ventilation area of each second opening 14.

A downward bead portion 17 extending in the front-rear direction is formed integrally with the cowl top 8 above the air inlet 6. The bead portion 17 is formed in a range surrounded by the impermeable panel 9. The bead portion 17 may be formed separately from the cowl top 8.

At the upper part of the cowl top 8, there is provided a reinforce 18 which is bent in a V-shaped cross section along the vehicle width direction. A closed section having a triangular section is formed along the vehicle width direction at the upper portion of the cowl top 8 by the reinforce 18. A lower end of a windshield 19 (see FIG. 3) is supported on the front surface of the reinforcement 18.

Next, the flow of the air A in this embodiment will be described. The air A enters the air box E from the opening 7. The air A that has entered the air box E is introduced into the impermeable panel 9 from the first opening 13 and the second opening 14, and is supplied from the air intake 6 to the vehicle interior.

In the present embodiment, the initial amount of air introduced into the air box E from the opening 7 is larger at the center in the vehicle width direction than at the end portions.
A large total ventilation area of the opening 13 is ensured so that more air A can be introduced into the impermeable panel 9.

Air A is also introduced into the water shield panel 9 from the second opening 14 facing the first opening 13. The flow of the air A introduced from the first opening 13 and the second opening 14 is
Since the flow is rectified downward by the bead portion 17 formed in the cowl top 8, the air is sucked into the air intake 6 efficiently without generating turbulence.

According to this embodiment, the support rigidity of the windshield 19 is improved. That is,
Since the impermeable panel 9 is connected to the upper and lower cowl tops 8 and the bottom surface 2, even if a downward load F is applied from the front window glass 19, the load F can be received by the impermeable panel 9. Although the water barrier panel 9 is not provided over the entire width of the air box E in the vehicle width direction, the partial windshield 19 can be sufficiently supported because the windshield 19 is rigid. Further, the bent shape of the impermeable panel 9 also helps to increase the support rigidity.

Further, since the closed section formed by the reinforcement 18 can be received, the support rigidity of the front window glass 19 is also improved in this respect. In addition, since the vertical bar 15 is provided between the first openings 13, even if the first opening 13 is formed,
Does not decrease so much in the longitudinal direction.

The second opening 14 has a bent portion 10 having a high rigidity in the vertical direction.
, The vertical rigidity near the second opening 14 does not decrease so much. Further, since the horizontal rail 16 is formed between the second openings 14, the rigidity in the front-rear direction is high, which helps to maintain the sectional rigidity of the air box E.

According to this embodiment, since the water-blocking panel 9 is provided only in the peripheral portion of the air inlet 6, as described above, the air at the central portion in the vehicle width direction with respect to the air inlet 6 is provided. The front and rear width d of the box E can be reduced. The fact that the front-rear width d of the air box E can be set to be partially small in this way improves the degree of freedom in arranging components in an engine room or a vehicle compartment located before and after the air box E.

In the above description, an example is shown in which the dash upper 1 is provided with a separate member (a cowl front) as a "front portion". However, a structure in which the dash upper 1 is integrally formed with a front portion may be employed.

[0034]

According to the first aspect of the present invention, since the impermeable panel is provided only in the peripheral portion of the air intake, the front and rear width of the air box can be reduced except for that portion. Therefore, the degree of freedom in arranging components in the engine room and the vehicle room located before and after the air box is improved. Also,
An opening for introducing air is also formed in the impermeable panel, so that air can be reliably taken into the air intake. Furthermore, since the water-impervious panel is connected to the upper and lower cowl tops and the bottom surface, the support of the windshield provided on the upper part of the cowl top is also ensured.

According to the second aspect of the present invention, since the impermeable panel has a bent shape facing at a predetermined angle, the support rigidity of the windshield is high.

According to the third aspect of the present invention, the first vertical surface portion on the center side in the vehicle width direction is formed in an oblique state longer than the second vertical surface portion, and the first opening has a larger ventilation area than the second opening. Is set to be large, the intake efficiency to the air intake is improved. That is, in the air box, the initial amount of air introduced is larger at the center in the vehicle width direction than at the end. Therefore,
By ensuring a large ventilation area of the first opening on the center side in the vehicle width direction, it is possible to improve the efficiency of intake to the air intake.

According to the fourth aspect of the invention, since the vertical bar is formed even when the first opening is formed, the rigidity of the first vertical surface in the vertical direction does not decrease so much.

According to the fifth aspect of the present invention, even if the second opening is formed, there is a horizontal rail, so that the rigidity of the second vertical surface portion in the front-rear direction does not decrease so much. Therefore, the cross section rigidity of the air box can be maintained. In addition, since the whole second vertical surface portion is close to the bent portion of the impermeable panel, the rigidity in the vertical direction does not decrease so much.

According to the sixth aspect of the present invention, since the downward bead portion extending substantially in the front-rear direction is formed above the air intake of the cowl top, it is introduced from the first opening and the second opening facing each other. Prevents turbulence caused by air collision. That is, since the flow of the air introduced from the first opening and the second opening is rectified and converted downward by the bead portion, the intake efficiency to the air intake located below the bead portion is improved.

According to the seventh aspect of the present invention, a downward load from the windshield can be received by the closed cross section formed by the reinforce, so that the support rigidity of the windshield is improved.

[Brief description of the drawings]

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

FIG. 2 is a plan view of a dash upper.

FIG. 3 is a sectional view taken along the line SA-SA shown in FIG. 2;

FIG. 4 is a sectional view taken along line SB-SB shown in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dash upper 2 Bottom part 4 Cowl front (front part) 3 Rear part X Vehicle width direction Y Front-back direction 6 Air intake 7 Opening part 8 Cowl top 9 Waterproof panel 11 1st vertical section 12 2nd vertical section 13 1st Opening 14 Second opening 17 Bead 18 Reinforce 19 Front window glass

Claims (7)

[Claims] 1. A dash upper having a cross section having a front surface and a rear surface before and after a bottom surface, and an air intake port provided near an end in the vehicle width direction behind the bottom surface. In a car air box structure provided with a cowl top along the vehicle width direction with an open portion left between the front portion and the front portion, the upper and lower ends of the cowl top and the bottom portion of the dash upper An air box structure for a motor vehicle, characterized by being surrounded by a water-impervious panel connected at both ends in the vehicle width direction to a rear surface of a dash upper, and having an opening for introducing air in the water-impervious panel. 2. A first vertical surface portion at the center in the vehicle width direction, wherein a water-impervious panel faces each other at a predetermined angle via a bent portion;
2. The vehicle according to claim 1, further comprising a second vertical surface at an end portion in a vehicle width direction, wherein the first vertical surface and the second vertical surface are respectively formed with a first opening and a second opening for introducing air. 3. Air box structure. 3. The first vertical surface portion is formed in a state extending in the front-rear direction, the first vertical surface portion is formed in an oblique state longer than the second vertical surface portion, and a first opening formed in the first vertical surface portion. 3. The air box structure for an automobile according to claim 2, wherein the total ventilation area is set larger than the second opening formed in the second vertical surface portion. 4. The air box structure for an automobile according to claim 2, wherein the plurality of first openings are formed in a lateral direction through a vertical bar. 5. The air box structure for an automobile according to claim 2, wherein the plurality of second openings are formed in a vertical direction via a horizontal rail. 6. The air box structure for an automobile according to claim 2, wherein a downward bead portion extending substantially in the front-rear direction is formed at a position above the air intake of the cowl top. 7. The cowl top according to claim 1, wherein a reinforce forming a closed cross section along the vehicle width direction is provided on an upper surface of the cowl top, and the lower end of the front window glass is supported by the reinforce. Item 4. The air box structure of a vehicle according to the paragraph.