JP2537554B2 - Automotive air box structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an automobile air box structure for inflowing outside air to ventilate a vehicle interior, and in particular, a reinforcing member is provided in a mounting portion of a steering mount bracket. The present invention relates to an air box structure for an automobile that maintains strength.

[Prior Art] Conventionally, an air box structure for an automobile of this type is, for example, as shown in FIG.

Reference numeral 1 in the drawing is an air box arranged between the engine room 2 and the vehicle compartment 3 along the vehicle width direction. The air box 1 includes a cowl top 4 including an engine room side vertical wall portion 4a and an upper wall portion 4b, and a bottom wall portion 5a and a passenger compartment side vertical wall portion 5b arranged below the cowl top 4. The dash upper panel 5 has an L-shaped cross section.

Then, the vertical wall portion of the dash upper panel 5 on the passenger compartment side
A dash upper member 6 having a substantially L-shaped cross section is joined to 5b along the vehicle width direction on the vehicle compartment 3 side, and the dash upper member 6 and the vehicle compartment side vertical wall portion 5b form a closed cross section. .

The lower end edge of the front window panel 7 is fixed to the cowl top 4 with an adhesive 8.

A reinforcing member 9 is arranged at a predetermined position inside the air box 1. Specifically, the L-shaped reinforcing member 9 is provided on the bottom wall portion 5a of the dash upper panel 5.
And the vehicle interior side vertical wall portion 5b from the inside by spot joining or the like. This supplements the strength of the dash upper panel 5 at the predetermined position.

A substantially V-shaped steering mount bracket 10 is attached to the lower side of the air box 1 in which the reinforcing member 9 is arranged. Specifically, the one end 10a is fixed to the bottom wall portion 5a of the dash upper panel 5, and the other end 10b is fixed to the vehicle interior side vertical wall portion 6a of the dash upper member 6, and the steering mount bracket 10 is fixed to the air. It is attached to the lower side of Box 1.

A steering column 12 with a steering wheel 11 is attached to the lower end of the steering mount bracket.

 Reference numeral 13 in the drawing is a dash lower panel.

Incidentally, examples of this type of structure include, for example, Shoukai 61-148768.
Is described in Japanese Patent Application Publication No.

[Problems to be Solved by the Invention] However, in such a conventional automobile air box structure, since the air box 1 is reinforced only by the reinforcing member 9, the cross-sectional deformation due to vibration or the like may occur. Not sufficiently prevented. Therefore, the rigidity supporting force of the reinforcing member 9 to the steering mount bracket 10 is weak, and the steering mount bracket 10 is allowed to vibrate in the arrow A direction. As a result, there is a problem that vibration is propagated from the steering mount bracket 10 to the steering wheel 11 via the steering column 12 and vibration is generated in the steering wheel 11.

[Means for Solving the Problems] The present invention has been made in view of such conventional problems, and a first reinforcing member is provided in the air box formed of a cowl top and a dash upper panel. The dash upper member is joined to the vehicle compartment side of the dash upper panel to form a closed cross section, and one end of the steering mount bracket is fixed to the dash upper member and the other end is dashed. In an automobile airbox structure fixed to a bottom wall portion of an upper panel, a rear vertical portion joined to a vertical wall portion of the dash upper panel is formed on the first reinforcing member, and the cowl top engine is formed. A front vertical portion joined to the room side vertical wall portion is extended, and a vertical portion of the second reinforcing member is fixed to the vertical wall portion of the dash upper member. The horizontal portion of the second reinforcing member is fixed to the bottom wall portion of the dash upper member, and the extension portion extending from the horizontal portion of the second reinforcing member is fixed to the first reinforcing member. It is characterized by being joined and fixed to the bottom wall of the dash upper panel.

[Operation] According to such means, the vertical wall portion and the bottom wall portion of the dash upper panel of the air box are reinforced from the inside by the first reinforcing member, and further, the outside of the bottom wall portion of the dash upper panel and the outside of the dash upper member. Is reinforced by the second reinforcing member, and the first and second reinforcing members are in a continuous state, and at the same time, the strength of the closed cross section is improved by providing the vertical portions on the first and second reinforcing members, respectively. Become. Therefore, the cross-section deformation of the air box and the dash upper member due to the vibration is suppressed, and the rigidity supporting force for the steering mount bracket is strengthened.

[Examples] Hereinafter, the present invention will be described based on Examples.

1 to 4 are views showing an embodiment of the present invention.

First, the configuration will be described. In FIG. 1, reference numeral 21 is an air box disposed between the engine room 22 and the vehicle compartment 23 along the vehicle direction. The member 24 is joined along the vehicle width direction.

Specifically, the air box 21 includes a cowl top 25 having an engine room side vertical wall portion 25a and an upper wall portion 25b and having an inverted L-shaped cross section, and a bottom wall portion 26 disposed below the cowl top 25.
It is configured by a dash upper panel 26 having an L-shaped cross section, which includes a and a vehicle compartment side vertical wall portion 26b.

And the interior wall side wall of the dash upper panel 26
A dash upper member 24 having a substantially L-shaped cross section is joined to the vehicle compartment 23 side of 26b along the vehicle width direction, and the dash upper member 24 and the vehicle compartment side vertical wall portion 26b form a closed cross section.

In addition, the cowl top 25 has a front wind panel.
The lower edge of 27 is fixed by an adhesive 2.

As shown in FIG. 1, a first reinforcing member 30 and a second reinforcing member 31 are arranged at the mounting portion of the steering mount bracket 29 of the air box 21.

As shown in FIGS. 1 and 2, the first reinforcing member 30 includes a rear vertical portion 30a, a front vertical portion 30b, and a lower horizontal portion 30c. The distance between the vertical portions 30a and 30b is set to be substantially equal to the distance between the inner surface of the vehicle compartment side vertical wall portion 26b of the dash upper panel 26 and the engine room side vertical wall portion 25a of the cowl top 25, and the vertical portion 30a, 30b
Each of the flange portions 30e, 30d for joining the first reinforcing member 30 to the vertical wall portion 25a and the vehicle-cabin-side vertical wall portion 26b from the inside.
Are formed. Further, the horizontal portion 30c is configured to be joined to the bottom wall portion 26a of the dash upper panel 26, and on the left side thereof, the lower end edge portion 25c of the cowl top 25 and the bottom wall portion 26a of the dash upper panel 26 are provided. A flange portion 30f joined between the two is extended.

In this way, the cowl top 25 and the dash upper panel 26 of the air box 21 are reinforced by the first reinforcing member 30 from the inside.

On the other hand, as shown in FIGS. 1 and 3, the second reinforcing member 31 includes a vertical portion 31a formed on the right side of the drawings and a horizontal portion 31b extending from the lower end of the vertical portion 31a. It is configured. The length of the vertical portion 31a is equal to that of the dash upper member 2
It is set to be approximately equal to the height of the vehicle compartment side vertical wall 24b,
The length of the horizontal portion 31b is set so as to exceed the width of the bottom wall portion 24a in the vehicle direction. The vertical portion 31a is the vertical wall portion 24b on the passenger compartment side.
At the tip of the horizontal portion 31b, a protrusion as an extension is formed at the tip of the horizontal portion 31b so as to avoid the bottom wall portion 24a of the dash upper member 24 and join to the bottom wall portion 26a of the dash upper panel 26. 31c is formed.

In the second reinforcing member 31, as shown in FIGS. 1 and 4, the protruding portion 31c of the horizontal portion 31b is the horizontal portion of the first reinforcing member 30.
It is arranged so as to face 30c, and this protruding portion 31c and the horizontal portion
31b central part and vertical part 31a respectively, dash upper panel
The bottom wall portion 26a of 26, the bottom wall portion 24a of the dash upper member 24, and the vehicle compartment side vertical wall portion 24b are abutted and joined. This allows the dash upper member 24 to move from the outside to the second reinforcing member 31.
Are reinforced by.

A steering mount bracket 29 having a substantially V shape is attached to the lower side of the first and second reinforcing members 30 and 31.

Specifically, one end 29a is fixed to the lower surface of the bottom wall portion 26a of the dash upper panel 26 and the vertical portion 31a of the second reinforcing member 31 is fixed.
The steering mount bracket 29 is attached with the other end 29b fixed to the outer surface.

At the lower end of this steering mount bracket 29,
The steering column 34 of the steering wheel 33 is attached.

 Reference numeral 35 in FIG. 1 is a dash lower.

Next, the operation of the automobile air box structure having such a configuration will be described.

The engine room side vertical wall portion 25a and the lower end edge portion 25c of the cowl top 25 are reinforced by the vertical portion 30b of the first reinforcing member 30 and the flange portion 30f of the horizontal portion 30c, and the vehicle interior side vertical wall of the dash upper panel 26. The portion 26b and the bottom wall portion 26a are reinforced by the vertical portion 30a and the horizontal portion 30c of the first reinforcing member 30.

Further, the vehicle compartment side vertical wall portion 24b and the bottom wall portion 24a of the dash upper member 24 are the vertical portion 31a and the horizontal portion 31b of the second reinforcing member 31.
Since it is reinforced from the outside by and, the rigidity of the dash upper member 24 is enhanced.

The first and second reinforcing members 30 and 31 are connected to each other, and the vertical portions 30a and 31a of the first and second reinforcing members 30 and 31 improve the strength of the closed cross section. It Therefore, vibration in the arrow B direction with respect to the steering mount bracket 27 disposed below the first and second reinforcing members 30 and 31 is suppressed.

According to this embodiment, the first reinforcing member 30 has a flange portion 30.
By extending f and joining it between the lower end edge portion 25c of the cowl top 25 and the bottom wall portion 26a of the dash upper panel 26, the strength of the air box 21 is further improved.

[Advantages of the Invention] As described above, according to the present invention, the cowl top and the dash upper panel of the air box are the first.
By reinforcing the bottom wall portion of the dash upper panel and the dash upper member, to which one end and the other end of the steering mount bracket are fixed, from the outside with the second reinforcement member, the reinforcement member is reinforced from the inside by the reinforcement member. By providing the first and second reinforcing members in a continuous manner and providing the first and second reinforcing members with vertical portions, the cross-sectional deformation of the air box and the dash upper member due to vibration is suppressed, and the rigidity supporting force for the steering mount bracket is increased. It can be strengthened and the steering wheel can be prevented from swinging.

[Brief description of drawings]

1 to 4 are views showing an embodiment of an automobile air box structure of the present invention. FIG. 1 is a sectional view taken along the vehicle longitudinal direction of the same structure, and FIGS. 2 and 3 are the same structure. FIG. 4 is a perspective view of a first reinforcing member and a second reinforcing member used for
FIG. 5 is a sectional view taken along the line IV-IV in FIG. 5, and FIG. 5 is a sectional view corresponding to FIG. 1 taken along the vehicle front-rear direction of the conventional automobile air box structure. 21 …… Air box 23 …… Vehicle compartment 24 …… Dash upper member 24b …… Vehicle compartment side vertical wall (vertical wall) 26 …… Dash upper panel 26a …… Bottom wall 26b …… Vehicle compartment side vertical wall Part (vertical wall) 29 …… Steering mount bracket 29a …… One end 29b …… Other end 30 …… First reinforcing member 30a …… Vertical part on the rear side, 30b …… Vertical part on the front side 31 …… 2 Reinforcement member 31a …… vertical part 31b …… horizontal part

Claims (1)

(57) [Claims] 1. A first reinforcing member is disposed so as to be joined to the dash upper panel in an air box formed of a cowl top and a dash upper panel, and a dash upper member is provided on the vehicle cabin side of the dash upper panel. In an automobile air box structure, which is joined to form a closed cross section, one end of a steering mount bracket is fixed to the dash upper member and the other end of the dash upper panel is fixed to the bottom wall portion of the dash upper member. Forming a rear vertical portion that is joined to a vertical wall portion of the dash upper panel and extending a front vertical portion that is joined to an engine room side vertical wall portion of the cowl top. The vertical portion of the second reinforcing member is fixed to the vertical wall portion of the dash upper member, and the horizontal portion of the second reinforcing member is fixed to the bottom wall of the dash upper member. And an extension part extending from a horizontal part of the second reinforcing member is joined and fixed to a bottom wall part of the dash upper panel to which the first reinforcing member is fixed. .