JPH1199971A - Front car body structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prohibit the capability of a small sharp turn from decreasing in a vehicle without enlarging a minimum effective radius of gyration even if a wing-like member is provided on a bumper side. SOLUTION: An under-spoiler 6 is fixed to the lower end of a bumper 1. A wing-like section W bending upward from the front section to rear section of a vehicle is provided in the vehicle side section 6b of this under-spoiler 6 and is projected outside from the side face of the bumper. The material of this wing-like section W is made from a rubber member liable to elastically be deformed more than a bumper material (synthetic resin).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a vehicle front body structure. In particular, the present invention relates to a vehicle front body structure having a wing-shaped member protruding outward from an outer end of a bumper on a front side of the vehicle.

[0002]

2. Description of the Related Art Conventionally, it has been known to mount a front spoiler extending forward on the lower end of a front bumper to enhance high-speed stability during high-speed running of a vehicle. By mounting this front spoiler, air flowing down the vehicle can be suppressed, and the air flow from the front can be used as a pressing force (so-called down force) for pressing the front end of the vehicle downward, so that many vehicles It is adopted in.

On the other hand, in order to obtain a great effect with the front spoiler, the front spoiler must be largely protruded to the lower end side. However, the amount of protrusion is inevitably determined by the relationship of the approach angle. I couldn't let it.

[0004] Therefore, as a method of obtaining a large pressing force without considering such an approach angle problem,
It is also considered to provide a protruding wing member on the side of the front bumper. (See Japanese Utility Model Application Laid-Open No. 64-19585)

[0005]

However, since the above-mentioned wing-shaped member is also protruded from the side of the bumper, the wing-shaped member interferes with an obstacle located in front of the vehicle, and deforms the bumper. Possibilities arise. Therefore, there has been a problem that the minimum effective turning radius (turning radius determined by the amount of front overhang of the vehicle and the shape of the front corner of the vehicle body) that affects the small turning property of the vehicle is increased.

[0006] The present application has been conceived in order to solve such a problem, and even if a wing-shaped member is provided,
An object of the present invention is to prevent the small turning performance of the vehicle from deteriorating without increasing the minimum effective turning radius.

[0007]

According to a first aspect of the present invention, there is provided a vehicle front body structure having a wing-like member projecting outward from an outer end of a bumper in a plan view on a front side surface of the vehicle.
The material of the wing-shaped member is constituted by an elastic member which is more deformable than the material of the bumper.

According to a second aspect of the present invention, there is provided a vehicle front body structure according to the first aspect, wherein the inside of the wing member is hollow. The front body structure of the vehicle according to the third aspect is the front body structure of the vehicle according to the first aspect, wherein an outer end of the wing member is deformed upward when an input load is applied from the side. It is characterized by having.

According to a fourth aspect of the present invention, there is provided a vehicle front body structure according to the third aspect, wherein a wing upper surface between a vehicle body side mounting portion of the wing member and a load receiving portion at an outer end is provided. It is characterized by having a downward convex shape.

According to a fifth aspect of the present invention, there is provided a front body structure of a vehicle according to the first aspect, wherein the wing-shaped member has a wing-shaped lower surface with respect to an input load from the front. It is characterized in that a reinforcing portion for holding is formed.

According to a sixth aspect of the invention, there is provided a vehicle front body structure according to the fifth aspect, wherein the reinforcing portion comprises a ridge extending in the front-rear direction. .

[0012]

According to the first aspect of the present invention, even if the front side surface of the vehicle is provided with a wing member projecting outward from the outer end of the bumper in plan view, the material of the wing member is changed. The minimum effective turning radius is increased because even if the wing member interferes with an obstacle when the vehicle makes a short turn, the wing member itself is deformed and the bumper is not deformed because it is formed of an elastic member that can be deformed from a bumper material. Nothing.
Therefore, even if the wing-shaped member protruding to the side of the front bumper is provided, the small turning performance of the vehicle is not deteriorated.

According to the second aspect of the present invention, the hollow shape facilitates the deformation and the weight can be reduced, so that the deterioration of the yawing moment can be prevented.

According to the third aspect of the present invention, when the wing-shaped member itself is deformed, the upper portion, which is the fixing portion to the pamper,
Since no tensile load is applied, falling off can be prevented even if the shape is repeatedly deformed.

According to the fourth aspect of the invention, since the function of the wing-shaped member is sufficiently obtained and no tensile load is applied to the fixed portion, falling off can be prevented even if the fixed portion is repeatedly deformed. According to the fifth aspect of the present invention, even if the wing member is formed of a deformable elastic member, the wing shape is maintained by the reinforcing portion even when a strong wind pressure is applied during traveling.
A stable downforce can be obtained. Claim 6
According to the invention described above, the effect of the invention described in claim 5 can be obtained with a simple configuration.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a front body structure of a vehicle to which the present invention is applied. A bumper 1 is attached to the front end of the vehicle, and a hood 2 and a fender 3 are located behind the bumper.
The headlight lid 4 is arranged on both sides of the hood, and the wheels 5 are arranged below the fender.

An under spoiler 6 is fixed to the lower end of the bumper 1 over the entire area in the vehicle width direction. The under spoiler 6 does not protrude beyond the bumper front end 1a, although the vehicle front part 6a protrudes slightly forward.
On the other hand, the vehicle side portion 6b is provided with a wing-shaped portion W which rises from the front to the rear and protrudes laterally from the bumper side surface 1b in plan view.

FIG. 2 is a detailed view of the wing-shaped portion W provided on the side portion 6b of the under spoiler. The wing-shaped portion W includes an upper surface W1, a lower surface W2, and a side surface W3, and is formed so as to rise smoothly from the front to the rear and to spread in the vehicle width direction.

FIG. 3 is a sectional view taken along a dashed line in FIG. AA cross section is a diagram (a), BB cross section is a diagram (b),
The CC section is shown in FIG. (C), and the DD section is shown in FIG.
As can be seen from each cross section, the interior I of the wing-shaped portion is hollow, the upper surface W1 is concave, the side wall W3 is formed with a vertical wall portion 7 extending vertically, and the lower surface is bent inward. A ridge 8 extending in the vehicle longitudinal direction is formed. A rising portion 9 is provided at a rear end, and a fixing portion 11 fixed to a lower end of the bumper by a screw 10 is provided at an upper end.

The material of the under spoiler 6 itself is a rubber member which is more easily elastically deformed than the material of the bumper 1 (synthetic resin). Next, the operation of the front body structure of the vehicle configured as described above will be described.

FIG. 4 is a plan view of the front vehicle body structure of this embodiment. When the wing-shaped portion W projects from the bumper side surface 1b as in this structure, the turning locus of the outer end of the vehicle at the time of turning (two-dot chain line). ) Is larger than when there is nothing (dashed line).
For this reason, in narrow alleys and the like, interference with the wall surface S (shaded portion) is caused, so that small turnability is deteriorated. But under spoiler 6
Since the material itself is made of a rubber member that is more easily elastically deformed than the material of the bumper 1, even if the wing-shaped portion W interferes with the wall surface S, the wing-shaped portion W itself is deformed. Does not occur, and the small turnability does not deteriorate.

Further, since the inside I of the wing-shaped portion W is hollow, it can be easily deformed in a light collision,
Since the increase in weight can be reduced, the weight in front of the vehicle does not increase, and the deterioration of the yawing moment can be prevented. Further, since the central portion of the upper surface W1 is concave, even if there is a load input F from the side, it is deformed upward as shown by the dotted line in FIG. 3B. Therefore, since no force in the pulling direction acts on the fixing portion 11, the durability of the fixing portion can be improved.

On the lower surface W2, a ridge 8 extending in the longitudinal direction of the vehicle body.
However, even if the wing-shaped portion W formed by the rubber member is likely to be deformed due to strong wind pressure during traveling, the wing shape is maintained, so that a stable downforce is maintained during traveling. Can be obtained.

In this embodiment, the underspoiler 6 is provided with the wing-shaped portion W. However, the present invention is not limited to this. Of course, only the wing-shaped portion W is formed separately. It may be fixed directly to the bumper 1. Also, the material is not limited to the rubber member as long as it is more easily elastically deformed than the material of the bumper.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a front vehicle body structure according to an embodiment of the present invention.

FIG. 2 is a detailed perspective view of a wing portion (wing member).

FIG. 3A is a sectional view taken along line AA of FIG. 2; (B) BB sectional drawing of FIG. (C) CC sectional drawing of FIG. (D) DD sectional drawing of FIG.

FIG. 4 is a plan view showing a turning locus of a front vehicle body structure.

[Explanation of symbols]

 Reference Signs List 1… Bumper 1b… Bumper side surface W… Wing-shaped part (wing-shaped member)

Claims (6)

[Claims] 1. A vehicle having a wing-like member projecting outward from an outer end of a bumper in a plan view on a front side surface of a vehicle, wherein the material of the wing-like member is constituted by an elastic member more deformable than the material of the bumper. A front body structure of a vehicle, characterized by: 2. The front body structure of a vehicle according to claim 1, wherein the inside of the wing member is hollow. 3. The front body structure of a vehicle according to claim 1, wherein an outer end of said wing member is deformed upward when an input load is applied from a side. 4. The front vehicle body according to claim 3, wherein an upper surface of the wing between the vehicle-body-side mounting portion of the wing-shaped member and a load receiving portion at an outer end has a downwardly convex shape. Construction. 5. The front part of a vehicle according to claim 1, wherein a reinforcing portion for maintaining the shape of the wing member against an input load from the front is formed on a lower surface of the wing of the wing member. Body structure. 6. A front body structure for a vehicle according to claim 5, wherein said reinforcing portion is constituted by a ridge extending in the front-rear direction.