JP2018161983A - Front body structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a front body structure of a vehicle, which can inhibit generation of a swirl due to drag force coming off at a front end of an offset portion, and thereby reducing aerodynamic drag.SOLUTION: The front body structure of a vehicle comprises: a grille portion 13 located at the front of the vehicle; and a lamp portion 14 disposed laterally outside of the grille portion 13. A lower front end portion of the lamp portion 14 and an upper front end portion of a bumper portion 12 are disposed so as to be offset from each other in a vehicle longitudinal direction. There is formed a laterally extending offset portion 19 that connects the lower front end portion of the lamp portion 14 to the upper front end portion of the bumper portion 12. There is provided a baffle portion 20 in front of the lamp portion 14. The baffle portion 20 includes: an air inlet disposed so as to extend in a vehicle vertical direction along an inner wall surface of the grille portion 13; an air outlet 27 that extends in the vehicle vertical direction, and which is located longitudinally in front of the lamp portion 14, and laterally inside of the lamp portion; and an air guide path connecting the air inlet to the air outlet 27.SELECTED DRAWING: Figure 3

Description

  The present invention includes a grill portion located in the front portion of the vehicle and a ramp portion disposed rearward of the vehicle and in the vehicle width direction with respect to the grill portion, and the front end portion of the ramp portion and the upper front end portion of the bumper portion are arranged in front and rear of the vehicle. The present invention relates to a front vehicle body structure of a vehicle in which an offset portion extending in the vehicle width direction is formed which is arranged offset in the direction and connects the lower front end portion of the ramp portion and the upper front end portion of the bumper portion.

  Generally, as disclosed in Patent Document 1, the front body structure of the vehicle is disposed at the front grill as the grill portion located at the front of the vehicle and at the rear of the vehicle and outside in the vehicle width direction from the front grill. What is provided with the headlamp (lamp part) used is known.

Specifically, the headlamp described above includes an outer surface in the vehicle width direction at the front portion of the bonnet, an outer surface in the vehicle width direction at the upper corner portion of the front bumper face as the bumper portion, an upper upper surface of the front fender panel, and an outer surface thereof. It arrange | positions so that a part may become substantially flush.
In the conventional structure disclosed in Patent Document 1, there is a concern that the above-described headlamp is damaged at the time of a vehicle front collision.

  Therefore, in order to avoid damage to the headlamp at the time of frontal collision of the vehicle, as shown as a comparative example in FIG. It is conceivable to arrange them.

  In this case, as shown in the figure, an offset portion 93 extending in the vehicle front-rear direction is formed between the front end lower portion of the headlamp 91 and the front bumper face 92 at the headlamp corresponding position. In FIG. 10B, 94 is a bonnet, and 95 is an edge member (so-called signature) of the front grill.

  In the structure of the comparative example shown in FIG. 10B, due to the presence of the offset portion 93, a part of the traveling wind flowing upward from below is peeled off at the front end of the edging member 95, and each element 94, 91. 95, a vortex (see the arrow in the figure) is formed corresponding to the size of the front open space, and the aerodynamic resistance is increased by this vortex, so there is room for improvement in terms of reducing aerodynamic resistance. there were.

JP 2011-201536 A

  Therefore, an object of the present invention is to provide a vehicle front end vehicle body structure that can suppress the generation of vortices due to separation of traveling wind at the front end of the offset portion and can improve aerodynamic resistance.

A vehicle front body structure according to the present invention includes a grille portion located at the front of the vehicle, and a lamp portion disposed rearward of the vehicle and in the vehicle width direction with respect to the grille portion, the lamp portion front end lower portion and the bumper A front body structure of a vehicle in which an upper portion of the front end of the vehicle is offset in the vehicle front-rear direction and an offset portion extending in the vehicle width direction that connects the lower front end of the ramp and the upper front end of the bumper is formed. A rectifying unit on the front side of the lamp unit, the rectifying unit extending in the vehicle vertical direction along the inner wall surface of the grill unit, a vehicle front side of the lamp unit and a vehicle width direction The air outlet is located on the inner side and extends in the vertical direction of the vehicle, and an air guide path that connects the air inlet and the air outlet.
The rectifying unit described above may be formed by an edge member of the front grill.

  According to the above configuration, it is possible to form an air flow discharged from the air inlet located on the inner wall surface of the grill part through the air guide path and from the air outlet on the vehicle front side and the vehicle width direction inside of the lamp part. .

  Since this airflow flows from the inner side in the vehicle width direction to the outer side in the vehicle width direction along the front part of the ramp part, the generation of vortex caused by the separation of the traveling wind at the front end of the offset part is suppressed to improve the aerodynamic resistance. be able to.

In one embodiment of the present invention, the air discharge port is arranged continuously to the front end portion of the lamp portion in a plan view of the vehicle.
According to the said structure, generation | occurrence | production of the vortex resulting from peeling of a running wind in front of a lamp | ramp part can be suppressed effectively.

In one embodiment of the present invention, the air inlet, the air outlet, and the air guide passage are integrally formed.
According to the said structure, since the air inflow port, the air exhaust port, and the air guide path were integrally formed, the number of parts of a rectification | straightening part can be reduced and the assembly | attachment property can be improved.

In an embodiment of the present invention, the angle formed by the rear part of the rear wall of the wind guide path including at least the rear end of the rear part of the rear wall of the wind guide path and a virtual horizontal plane extending in the vehicle width direction in the vehicle plan view is It is formed to be equal to or larger than the angle formed by the front end of the lamp portion and the virtual horizontal plane.
According to the above configuration, the air flow flowing out from the air discharge port can surely flow from the inner side in the vehicle width direction to the outer side in the vehicle width direction along the front surface of the lamp unit by the angle setting.

In one embodiment of the present invention, the air discharge port is formed to open toward the outside in the vehicle width direction at the rear portion in the vehicle front-rear direction of the rectifying unit.
According to the said structure, the airflow which flows along a lamp part front surface can be ensured reliably.

  According to the present invention, there is an effect that it is possible to improve the aerodynamic resistance by suppressing the generation of vortex caused by the separation of the traveling wind at the front end of the offset portion.

The front view of the vehicle provided with the front body structure of the present invention Schematic perspective view showing the front body structure of the vehicle A perspective view of the front vehicle body structure with the main part broken away Enlarged front view showing the rectification unit Left side view of rectification unit Plan view of rectification unit Perspective view of rectification unit AA sectional view taken along line AA in FIG. BB cross-sectional view of FIG. (a) is a side view showing vortex generation suppression of the present embodiment, (b) is a side view showing vortex generation of a comparative example.

  The purpose of improving the aerodynamic resistance by suppressing the generation of vortices caused by the separation of the traveling wind at the front end of the offset part is to provide a grill part located at the front part of the vehicle, the rear part of the vehicle and the vehicle width from the grill part. A ramp portion disposed on the outer side in the direction, the ramp portion front end lower portion and the bumper portion front end upper portion are disposed offset in the vehicle front-rear direction, and connect the ramp portion front end lower portion and the bumper portion front end upper portion. A vehicle front body structure in which an offset portion extending in a vehicle width direction is formed, and a rectifying portion is provided on a front side of the lamp portion, and the rectifying portion extends in a vehicle vertical direction along an inner wall surface of the grill portion. Connecting the air inlet, the air outlet and the air outlet located in the vehicle front side and in the vehicle width direction of the ramp portion and extending in the vehicle vertical direction. Constructed from the air duct It was realized in the structure of being.

An embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view of a vehicle equipped with the front body structure, FIG. 2 is a schematic perspective view showing the front body structure of the vehicle, and FIG. It is a perspective view of a front body structure shown.

  1 to 3, a bonnet 10 that covers the engine room so as to be openable and closable, a front fender panel 11 that covers both left and right sides of the engine room, and a front bumper face 12 that serves as a bumper part that covers the front of the engine room. Provided.

  A front grill 13 serving as a grill portion is provided between the above-described center portion in the vehicle width direction of the front bumper face 12 and the center portion in the vehicle width direction of the front end of the bonnet 10. On the outer side in the width direction, a pair of left and right headlamps 14 are arranged as lamp portions.

As shown in FIGS. 1 to 3, a traveling wind introduction portion 15 extending in the vehicle width direction is formed on the front bumper face 12 below the front grill 13, while a front wheel corresponding portion of the front fender panel 11 is formed. A wheel arch 16 is formed.
Specifically, the wheel arch 16 described above is formed by a wheel house inner panel, a wheel house outer panel, and a splash shield.

As shown in FIG. 1, the above-described front grill 13 includes upper and lower rim members 17 and 18 (so-called signatures).
The upper edge member 17 is formed so as to extend in the vehicle width direction along the upper inner wall surface 13 a of the front grill 13, and the lower edge member 18 is an inner wall surface 13 b at both left and right ends of the front grill 13 in the vehicle width direction. And it is formed in the substantially concave shape in the vehicle front view along the lower inner wall surface 13c.

The left and right vehicle width direction both ends of the above-described lower rim member 18 are configured to serve as the left and right rectifying units 20 and 20.
The rectifying unit 20 includes an upper piece 20A that extends upward and inward in the vehicle width direction from the point P that is the outermost end in the vehicle width direction of the front grill 13, and downward and inward in the vehicle width direction from the point P described above. The extending lower piece 20B is integrally formed in a substantially Y-shape that is laterally viewed from the front of the vehicle shown in FIG.

  Here, the upper piece 20 </ b> A is located between the front grill 13 and the headlamp 14, and the upper end of the upper piece 20 </ b> A extends upward to a position where it abuts on the front end of the bonnet 10. The lower piece 20B is located between the front grill 13 and the front bumper face 12.

  As shown in FIG. 3, the lower front end portion of the headlamp 14 and the upper front end portion of the front bumper face 12 are offset in the vehicle front-rear direction, and the lower front end portion of the headlamp 14 and the upper front end portion of the bumper face 12 are disposed. An offset portion 19 (specifically, an offset portion of about 10 cm in the longitudinal direction of the vehicle) extending in the vehicle width direction is formed to prevent the headlamp 14 from being damaged at the time of a frontal collision of the vehicle. It is configured accordingly.

  4 is an enlarged front view of the rectifying unit 20, FIG. 5 is a left side view of the rectifying unit 20, FIG. 6 is a plan view of the rectifying unit 20, FIG. 7 is a perspective view of the rectifying unit 20, and FIG. 9 is a cross-sectional view taken along line A-A, FIG. 9 is a cross-sectional view taken along line B-B in FIG. 8, and FIG. 10A is a side view illustrating suppression of vortex generation in this example.

Next, a specific structure of the rectifying unit 20 will be described with reference to FIGS.
In the following description, the structure of the rectifying unit 20 on the left side of the vehicle will be described. However, the rectifying unit 20 on the right side of the vehicle is configured symmetrically or substantially symmetrically with respect to the left side.

  As shown in FIGS. 4 to 9, the upper piece 20 </ b> A of the rectifying unit 20 described above is formed from the front wall 21, the rear wall 22, the upper wall 23, the bottom wall 24, and the vehicle width direction outer end of the rear wall 22. And a bent wall 25 that is integrally bent at the rear of the vehicle.

  As shown in FIGS. 7 and 8, the rectifying unit 20 is disposed so as to be surrounded by the walls 21, 22, 23, and 24 and to extend substantially in the vertical direction of the vehicle along the inner wall surface of the front grill 13. An air inlet 26 is provided. In the figure, 29 is a grill guide wall face facing the air inlet 26.

  As shown in FIGS. 5, 6, 7, and 8, the rectifying unit 20 is surrounded by the walls 21, 22, 23, and 24, and the front side of the headlamp 14 and the inner side in the vehicle width direction. The air discharge port 27 is disposed so as to extend substantially in the vertical direction of the vehicle. The air discharge port 27 is formed in a vertically long rectangular shape.

  Furthermore, as shown in FIG. 8, an air guide path 28 that connects the air inlet 26 and the air outlet 27 is provided. The air guide path 28 is formed by the front wall 21, the rear wall 22, the upper wall 23, and the bottom wall 24 described above. In this embodiment, the bottom wall 24 is, as shown in FIG. It is formed in a slant shape so as to rise obliquely upward from the vehicle width direction inner side to the vehicle width direction outer side.

  As described above, the air flow inlet 26 along which the rectifying unit 20 is along the inner wall surface of the front grill 13, the air outlet 27 located on the vehicle front side of the headlamp 14 and the vehicle width direction inside, and the air inlets. 26 and the air discharge port 27, the vehicle of the headlamp 14 from the air inlet 26 located on the inner wall surface of the front grill 13 through the air guide path 28 when the vehicle travels. An airflow discharged from the air discharge port 27 on the front side and in the vehicle width direction can be formed.

  Specifically, as shown in FIG. 10A, the above-described airflow is formed on the front surface of the outer lens of the headlamp 14 and in the range indicated by the phantom line α in the figure, and this airflow is the front part of the headlamp 14. Since it flows from the inner side in the vehicle width direction to the outer side in the vehicle width direction (specifically, the front surface of the outer lens of the headlamp 14), the generation of vortex caused by the separation of the traveling wind at the front end of the offset portion 19 is suppressed. It is intended to improve aerodynamic resistance.

  FIG. 10 (a) showing the structure of this example and the comparison of FIG. 10 (b) showing the structure of the comparative example (without the air inlet 26, the air outlet 27, and the air guide path 28). As is clear from the above, in the comparative example in which each of the elements 26, 27, and 28 does not exist, a larger vortex is generated in the separation of the traveling wind at the front end due to the offset portion 93, and the aerodynamic resistance is reduced. While improvement cannot be expected, in the present embodiment including the above-described elements 26, 27, and 28, generation of vortex caused by separation of traveling wind at the front end of the offset portion 19 is suppressed by the air flow, and aerodynamics is suppressed. The resistance could be improved.

  On the other hand, as shown in FIG. 8, the above-described upper piece portion 20 </ b> A includes a hollow portion 20 a immediately before the air guide path 28, and as shown in FIG. 7, the above-described lower piece portion 20 </ b> B is formed on the front grill 13. An opposing surface portion 20b facing inward, and a folded portion 20d that bends inward in the vehicle width direction and rearward after being bent downward from the front and the front in the vehicle width direction of the opposing surface portion 20b.

  By the way, as shown in FIG. 3, the above-described air discharge port 27 is continuously disposed at the front end portion of the headlamp 14 in a plan view of the vehicle, thereby causing the traveling wind to peel in front of the headlamp 14. It is configured to effectively suppress the generation of vortices.

  Further, as shown in FIGS. 8 and 9, the air inlet 26, the air outlet 27, and the air guide path 28 described above are integrally formed, thereby reducing the number of parts of the rectifying unit 20. The assembly of the rectification unit 20 is improved.

  Furthermore, as shown in FIG. 8, in the vehicle plan view, a virtual wall extending in the vehicle width direction with the rear part of the rear wall 22 of the air guide path 28 including at least the rear end portion of the rear wall 22 of the air guide path 28 described above. The angle θ2 formed by the horizontal plane HOR (in this embodiment, the angle θ2 formed by the virtual horizontal line HOR extending in the vehicle width direction and the center line CL of the air guide path 28) is the front end of the headlamp 14 and the virtual horizontal plane. It is formed to be equal to or larger than an angle θ1 formed by HOR (in this embodiment, an inclination angle θ1 with respect to the horizontal line HOR of the front surface of the outer lens in the headlamp 14).

In this embodiment, the angle θ2 is set to about 40 ° and the angle θ1 is set to about 30 °. However, the present invention is not limited to this value.
As described above, the relationship between the angles θ2 and θ1 is θ2 ≧ θ1, so that the airflow flowing out from the air discharge port 27 can be reliably transmitted along the front surface of the headlamp 14 from the inner side in the vehicle width direction. It is configured to flow outward.

In addition, as shown in FIGS. 3 and 5, the air discharge port 27 described above is formed to open toward the outside in the vehicle width direction at the rear part of the rectifying unit 20 in the vehicle front-rear direction. Specifically, the airflow flowing along the front surface of the outer lens of the headlamp 14 is ensured.
In the figure, arrow F indicates the front of the vehicle, arrow R indicates the rear of the vehicle, arrow IN indicates the inward in the vehicle width direction, arrow OUT indicates the outward in the vehicle width direction, and arrow UP indicates the upper side of the vehicle. Indicates.

  Thus, the front body structure of the vehicle of the above-described embodiment includes the front grill 13 as a grill portion located at the front of the vehicle, and the lamp portion disposed behind the front grill 13 and on the outer side in the vehicle width direction. And a front bumper face 12 which is a bumper part and a front bumper face 12 are offset from each other in the vehicle front-rear direction, and the front lamp 14 has a front end lower part and the bumper face. 12 is a front vehicle body structure of a vehicle in which an offset portion 19 extending in the vehicle width direction connecting the front end upper portion is formed, and a rectifying portion 20 is provided on the front side of the headlamp 14, and the rectifying portion 20 is provided on the front grill 13. An air inlet 26 extending in the vehicle vertical direction along the inner wall surface of the vehicle, and a vehicle front side of the headlamp 14 and in the vehicle width direction. And an air discharge port 27 extending in the vertical direction of the vehicle and an air guide path 28 connecting the air inlet 26 and the air discharge port 27 (FIG. 1, FIG. 3, see FIG.

  According to this configuration, an airflow discharged from the air outlet 27 located on the inner wall surface of the front grill 13 through the air guide path 28 from the air outlet 27 on the front side of the headlamp 14 and in the vehicle width direction is formed. can do.

  Since this airflow flows from the inner side in the vehicle width direction to the outer side in the vehicle width direction along the front part of the headlamp 14, the generation of vortex caused by the separation of the traveling wind at the front end of the offset part 19 is suppressed, and the aerodynamic resistance is improved. Can be achieved.

Moreover, in one Embodiment of this invention, the said air exhaust port 27 is continuously arrange | positioned at the front end part of the headlamp 14 as the said lamp part by vehicle planar view (refer FIG. 3).
According to this structure, the generation | occurrence | production of the vortex resulting from peeling of a running wind in front of the headlamp 14 can be suppressed effectively.

Furthermore, in one embodiment of the present invention, the air inlet 26, the air outlet 27, and the air guide path 28 are integrally formed (see FIGS. 8 and 9).
According to this configuration, since the air inlet 26, the air outlet 27, and the air guide path 28 are integrally formed, the number of parts of the rectifying unit 20 can be reduced, and the assembling property can be improved.

  Furthermore, in one embodiment of the present invention, a virtual horizontal plane extending in the vehicle width direction from the rear part of the rear wall of the air guide path 28 including at least the rear end portion of the rear part of the rear wall 22 of the air guide path 28 in a vehicle plan view. The angle θ2 formed by the HOR is formed to be equal to or larger than the angle θ1 formed by the front end of the headlamp 14 and the virtual horizontal plane HOR (see FIG. 8).

  According to this configuration, by setting the angles θ2 and θ1, the airflow flowing out from the air discharge port 27 can surely flow from the inside in the vehicle width direction to the outside in the vehicle width direction along the front surface of the headlamp 14.

In addition, in one embodiment of the present invention, the air discharge port 27 is formed to open outward in the vehicle width direction at the rear portion in the vehicle front-rear direction of the rectifying unit 20 (see FIGS. 3 and 5). ).
According to this structure, the airflow which flows along the headlamp 14 front surface can be ensured reliably.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The grill portion of the present invention corresponds to the front grill 13 of the embodiment,
Similarly,
The lamp part corresponds to the headlamp 14,
The bumper part corresponds to the bumper face 12,
The present invention is not limited to the configuration of the above-described embodiment.

  As described above, the present invention includes a grill portion located at the front portion of the vehicle, and a ramp portion disposed rearward of the vehicle and outside in the vehicle width direction relative to the grill portion, the lamp portion front end lower portion and the bumper portion. Useful for a vehicle front body structure in which a front end upper portion is offset in the vehicle front-rear direction and an offset portion extending in the vehicle width direction connecting the lower front end lower portion of the ramp portion and the upper front end portion of the bumper portion is formed. is there.

12 ... Front bumper face (bumper part)
13. Front grill (grill part)
14 ... Headlamp (lamp part)
DESCRIPTION OF SYMBOLS 19 ... Offset part 20 ... Rectification part 26 ... Air inflow port 27 ... Air discharge port 28 ... Air guide path

Claims (5)

A grill part located at the front of the vehicle, and a lamp part arranged behind the grill part and on the vehicle width direction outside,
A vehicle in which the lower front end portion of the ramp portion and the upper front end portion of the bumper portion are offset in the vehicle front-rear direction, and an offset portion extending in the vehicle width direction that connects the lower front end portion of the ramp portion and the upper front end portion of the bumper portion is formed. The front body structure of
A rectifying unit is provided on the front side of the lamp unit,
The rectifying unit is disposed so as to extend in the vehicle vertical direction along the inner wall surface of the grill part, and is positioned on the vehicle front side and in the vehicle width direction of the lamp unit and extends in the vehicle vertical direction. The vehicle body structure of the front part of the vehicle comprised of the air discharge port and the air guide path connecting the air flow inlet and the air discharge port. The vehicle front body structure according to claim 1, wherein the air discharge port is arranged continuously to the front end portion of the lamp portion in a plan view of the vehicle. The vehicle front body structure according to claim 1 or 2, wherein the air inlet, the air outlet, and the air guide passage are integrally formed. The angle formed between the rear portion of the rear wall of the wind guide path including at least the rear end portion of the rear portion of the rear wall of the wind guide path and a virtual horizontal plane extending in the vehicle width direction in a plan view of the vehicle is determined by the front end of the lamp section and the virtual horizontal plane. The front body structure of a vehicle according to any one of claims 1 to 3, wherein the front body structure is formed to be equal to or larger than an angle formed by. The vehicle front body structure according to any one of claims 1 to 4, wherein the air discharge port is formed to open outward in a vehicle width direction at a rear portion in the vehicle front-rear direction of the rectifying unit.

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