JP2022179005A - Vehicular front part body structure - Google Patents

Abstract

To provide a vehicular front part body structure capable of concurrently achieving satisfaction of a design requirement and pedestrian protection performance.SOLUTION: A vehicular front part body structure includes: a vehicular headlamp unit 12 having a lens part 32 emitting light and a unit body part 34 fitted at a downward position of the lens part; a bumper fascia 8 with a projecting surface 8a projecting forward of the vehicle from the lower part of the lens part of the headlamp unit; and an impact absorption member 30 positioned forward of the vehicle against the lens part and the unit main body part of the headlamp unit inside the bumper fascia in side view. The impact absorption member absorbs impact energy by abutting onto the unit main body part of the headlamp unit upon the occurrence of front collision.SELECTED DRAWING: Figure 4

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front body structure of a vehicle, and more particularly to a front body structure of a vehicle provided with an impact absorbing member for pedestrian protection in front of a headlamp unit of the vehicle.

BACKGROUND ART Conventionally, energy absorption structures have been studied for the purpose of protecting pedestrians in the vicinity of vehicle headlamp units.
For example, in order to suppress the drag force when a pedestrian's head or thigh collides from the hood panel side, and to ensure sufficient drag force against a light collision from the bumper side, There has been proposed a front body structure of a vehicle provided with a load transmitting portion for transmitting an input load (for example, Patent Document 1).

JP 2012-71675 A

However, according to the vehicle front body structure described in Patent Document 1, although the impact on the pedestrian can be suppressed by transmitting the load input to the headlamp to the rear of the vehicle, the impact directly on the headlamp itself Since the load is input, the headlamp unit itself may break down.

In addition, in a vehicle with a large body size such as an SUV, which has a relatively high vehicle height, the height from the ground to the top of the bonnet is high. collide with That is, it collides vertically against the front bumper fascia.

Here, the headlamp unit may be able to disperse the input load from above the vehicle by, for example, deformation of the mounting portion thereof. However, the headlamp unit usually has a high mounting strength in the front-rear direction, and cannot absorb sufficient energy against an input load such as a pedestrian's thighs colliding from the front in the horizontal direction. could join pedestrians.

On the other hand, in order to reduce the impact load applied to the pedestrian by the headlamp unit, for example, the headlamp unit itself may simply be laid out on the rear side of the vehicle. However, in such cases new problems arise in order to meet the design requirements of the front of the vehicle.
In response to the above problems, the present inventors have studied a vehicle front structure that satisfies both design requirements and pedestrian protection performance, taking into consideration the collision mode according to the vehicle class.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a front body structure for a vehicle that satisfies design requirements and achieves pedestrian protection performance at the same time. .

In order to solve the above-described problems, the present invention provides a headlamp unit for a vehicle, which includes a lens portion that emits light and a unit main body portion provided below the lens portion, and a lower portion of the lens portion of the headlamp unit. a bumper fascia having a protruding surface protruding forward of the vehicle from the headlamp unit; The absorbing member is characterized by absorbing collision energy by coming into contact with the unit main body of the headlamp unit at the time of a frontal collision.

According to the present invention configured as described above, the headlamp unit includes a lens portion that emits light and a unit body portion provided below the lens portion, and the bumper fascia is the lens portion of the headlamp unit. Since the protruding surface protrudes forward from the lower part of the vehicle, it is possible to satisfy the predetermined design requirements of the front part of the vehicle. Further, according to the present invention, the shock absorbing member is positioned inside the bumper fascia and in front of the vehicle with respect to the lens portion and the unit main body portion of the headlamp unit when viewed from the side. Collision energy is absorbed by coming into contact with the unit main body of the unit. Therefore, according to the present invention, in the event of a frontal collision (collision with a pedestrian), for example, the pedestrian's thighs do not collide directly with the headlamp unit, and the impact absorbing member in front of the headlamp unit receives the load. It is possible to receive and absorb the collision energy, thereby suppressing excessive increase in the collision load applied to the pedestrian. As a result, according to the present invention, it is possible to satisfy both design requirements and pedestrian protection performance.

Further, in the present invention, preferably, at least one of both side portions of the shock absorbing member in the vehicle width direction is provided with a support member for suppressing the tilting of the shock absorbing member in the vehicle width direction in the event of a frontal collision.
According to the present invention configured as described above, the support member suppresses the collapse of the impact absorbing member in the vehicle width direction in the event of a frontal collision, so that the impact energy can be absorbed more effectively by the impact absorbing member itself. A reduction in the degree can be suppressed.

Further, in the present invention, preferably, the impact absorbing member has a rectangular front portion, and the front portion is formed with a bead portion extending along a diagonal line thereof.
According to the present invention configured as described above, the collision load can be transmitted to the corners of the shock absorbing member via the bead portion to increase the reaction force at the initial stage of collision. The impact energy can be absorbed by the impact absorbing member itself.

Further, in the present invention, preferably, the impact absorbing member is formed integrally with the reinforcing member of the bumper fascia inside the bumper fascia.
According to the present invention configured in this manner, it is possible to more effectively satisfy the design requirements and achieve both pedestrian protection performance.

In the present invention, preferably, the impact absorbing member is formed with a projecting portion extending rearward of the vehicle, and the projecting portion comes into contact with the unit main body portion of the headlamp unit in the event of a frontal collision.
According to the present invention configured in this way, the impact energy can be absorbed more effectively by the impact absorbing member itself.

According to the vehicle front body structure of the present invention, it is possible to satisfy design requirements and achieve pedestrian protection performance.

1 is a perspective view of a front portion of a vehicle having a front body structure for a vehicle according to an embodiment of the present invention, viewed obliquely from above on the right side of the vehicle; FIG. FIG. 2 is a partially cross-sectional side view of the front vehicle body structure of the vehicle according to the present embodiment, viewed from the right side of the vehicle; 1 is an enlarged perspective view showing a main part of a front vehicle body structure of a vehicle according to this embodiment; FIG. FIG. 4 is a side view of the main part of the front vehicle body structure of the vehicle in FIG. 3 as viewed from the right side of the vehicle; FIG. 4 is a front view of the main part of the front vehicle body structure of the vehicle in FIG. 3 as seen from the front of the vehicle; FIG. 4 is a perspective view of the impact absorbing portion of the grill reinforcement according to the present embodiment, viewed from the right side of the vehicle and obliquely above; FIG. 7 is a partial cross-sectional side view of the impact absorbing portion of the grill reinforcement shown in FIG. 6 as viewed from the inside in the vehicle width direction;

A vehicle front body structure according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

First, a vehicle front body structure according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. FIG. 1 is a perspective view of a front portion of a vehicle provided with a vehicle front body structure according to an embodiment of the present invention, viewed from the right side of the vehicle and obliquely above. FIG. 2 is a front body portion of the vehicle according to the embodiment. FIG. 2 is a partial cross-sectional side view of the structure viewed from the right side of the vehicle;

First, as shown in FIG. 1, a vehicle 1 equipped with a vehicle front body structure according to an embodiment of the present invention includes a bonnet hood 4 covering an engine room 2 at the front and a vehicle width direction at the front side thereof. a bumper fascia 8 provided below the grille upper panel 6 and in front of the vehicle 1; a front grille 10 provided between the grille upper panel 6 and the bumper fascia 8; A headlamp unit 12 is arranged on both left and right sides of the grille 10 and above the bumper fascia 8, and a front fender 14 is provided on both left and right sides of the bonnet hood 4 and on the side of the vehicle.

Next, as shown in FIG. 2, the vehicle 1 includes a pair of left and right front side frames 16 extending in the front-rear direction of the vehicle in the engine room 2 and front end portions of the front side frames 16 as frame members constituting the vehicle body. and a bumper reinforcement 20 attached to the front ends of these crash cans and extending in the vehicle width direction.
A pair of left and right apron members 22 extending in the longitudinal direction of the vehicle are provided on the upper side of the engine room 2 and on both the left and right sides in the front portion of the vehicle 1. The apron members 22 and the front side frames 16 are attached to a suspension tower. 23 are connected.

Each apron member 22 has a vehicle front end portion curved inward in the vehicle width direction, and these end portions are connected to each other by a shroud upper member 24 . Further, connecting members 26 are provided at both ends of the shroud upper member 24 to vertically connect the shroud upper member 24 and the front side frame 16 therebelow.

The vehicle 1 is also provided with a resin grille reinforcement 28 that is attached to a bumper reinforcement 20, a bumper support bracket (not shown), or the like, and mainly supports and reinforces the bumper fascia 8 and the front grille 10. . In this embodiment, on both left and right sides of the grille reinforcement 28 in the vehicle width direction, shock absorbing portions (shock absorbing members) 30 for receiving shocks from obstacles (such as the thighs of pedestrians) from the front of the vehicle are provided. is formed.

Next, the headlamp unit 12 of this embodiment includes a lens portion 32 that emits light, and a unit main body portion 34 provided below the lens portion 32 . A light source (not shown) such as an LED that emits light is provided inside the lens portion 32 , and a controller for controlling the light source is housed in the unit body portion 34 .

The headlamp unit 12 is mainly attached at its upper portion to the tip of the apron member 22, which is the frame member of the vehicle body, by means of a bracket (not shown) or the like, and is supported. The headlamp unit 12 is also attached to and supported by a front fender 14 (see FIG. 1).

Next, as shown in FIGS. 1 and 2, in the present embodiment, the headlamp unit 12 is arranged so as to be positioned rearward in the vehicle front-rear direction with respect to the forefront of the vehicle on which the front grille 10 is provided. ing. With this arrangement, when a pedestrian collides with the front part of the vehicle, the headlamp unit 12 does not directly apply an impact load to the pedestrian.

Corresponding to such arrangement, as shown in FIG. 1, the bumper fascia 8 is formed with a protruding surface 8a protruding forward of the vehicle from the lower portion of the lens portion 32, thereby allowing the headlamp unit 12 to move. We are trying to ensure the design when it is placed at the rear of the vehicle.
Here, as shown in FIG. 1, the bumper fascia 8 has, on both left and right end sides thereof in the vehicle width direction, extending downward of the vehicle from the front edge portions of the respective protruding surfaces 8a. A bulging portion 8b that bulges to a position and side portions 8c that extend downward from the vehicle from the side edges of the respective projecting surfaces 8a are formed. A bulging portion formed by the projecting surface 8a, the bulging portion 8b and the side portions 8c is referred to as left and right bulging portions 8d of the bumper fascia 8. As shown in FIG.

1 to 5, the configuration of the left and right ends in the vehicle width direction of the vehicle front body structure according to the present embodiment will be further described. FIG. 3 is an enlarged perspective view showing a main part of the front body structure of the vehicle according to the present embodiment, and FIG. 4 is a side view of the main part of the front body structure of the vehicle in FIG. 3 as viewed from the right side of the vehicle. FIG. 5 is a front view of the main part of the front body structure of the vehicle in FIG. 3 as seen from the front of the vehicle;
First, as shown in FIGS. 1 to 3, the impact absorbing portion 30 of the grille reinforcement 28 described above is housed inside the left and right swelling portions 8d of the bumper fascia 8. As shown in FIG.
Next, as shown in FIGS. 2 to 5, the shock absorbing portion 30 is arranged below the lens portion 32 of the headlamp unit 12 and in front of the unit main body portion 34 of the vehicle. 2 and 4, the impact absorbing portion 30 is positioned in front of the vehicle in the unit main body portion 34 of the headlamp unit 12 in a side view.

Next, the configuration of the impact absorbing portion 30 of the vehicle front body structure according to the present embodiment will be further described with reference to FIGS. 3 to 7. FIG. FIG. 6 is a perspective view of the impact absorbing portion of the grill reinforcement according to the present embodiment as seen from the right side of the vehicle and obliquely above, and FIG. 7 is a perspective view of the impact absorbing portion of the grill reinforcement shown in FIG. It is a partial cross-sectional side view seen from the inside.
First, as shown in FIGS. 3 to 7, the shock absorbing portion 30 includes an inner side surface 30a on the inner side in the vehicle width direction, an outer side surface 30b on the outer side in the vehicle width direction, an upper side surface 30c on the upper side of the vehicle, and a lower side surface on the lower side of the vehicle. and a rectangular front surface 30e formed continuously with the inner side 30a, the outer side 30b, the upper side 30c and the lower side 30d. The impact absorbing portion 30 is formed in a box shape mainly by these surface portions 30a to 30e.

4 and 5, the impact absorbing portion 30 is formed such that the box-shaped portions 30a to 30e are located forward and below the lens portion 32. As shown in FIGS.
A front surface portion 30e of the impact absorbing portion 30 is formed with two bead portions 30f extending diagonally and intersecting each other. In this embodiment, the bead portion 30f is configured as a rear projection portion (groove portion) that projects toward the vehicle rear side with respect to the remaining surface of the front surface portion 30e.

Next, as shown in FIGS. 2, 4 and 7, a rear projection 30g extending toward the rear of the vehicle is formed on the rear portion of the shock absorbing portion 30. As shown in FIG.
As shown in FIGS. 2 and 4, the rear projecting portion 30g is formed at a position facing the unit main body portion 34 of the headlamp unit 12 in the vehicle front-rear direction. Due to this positional relationship, the rear projecting portion 30g contacts the unit main body portion 34 when the impact absorbing portion 30 is displaced rearward of the vehicle in the event of a frontal collision of the vehicle. In the event of a frontal collision, the unit main body portion 34 receives the collision load transmitted through the rear projection portion 30g, thereby facilitating the absorption of the impact by the impact absorbing portion 30. As shown in FIG. That is, since the headlamp unit 12 is attached to the frame member of the vehicle body as described above, it can effectively receive the load.

Next, as shown in FIGS. 3 and 5 to 7, the inner side surface 30a of the impact absorbing portion 30 is provided with a support portion (support member) 30h extending in the vehicle width direction. In this embodiment, the support portion 30h is a rib integrally formed with the grill reinforcement 28. As shown in FIG. In this embodiment, the inner side surface 30a of the shock absorbing portion 30 is supported by the supporting portion 30h, and when the shock absorbing portion 30 receives a load due to such support, the shock absorbing portion 30 will He is trying to suppress collapse in the width direction. It should be noted that the outer side surface 30b of the impact absorbing portion 30 may also be provided with a support member having a similar fall-suppressing function.

Next, the effects of the vehicle front body structure according to the embodiment of the present invention will be described.
First, according to the embodiment of the present invention, the headlamp unit 12 includes a lens portion 32 for emitting light and a unit main body portion 34 provided below the lens portion 32, and the bumper fascia 8 is the headlamp unit. Since the headlamp unit 12 is provided with the protruding surface 8a protruding forward of the vehicle from the lower portion of the lens portion 32 of the unit 12, even if the headlamp unit 12 is arranged on the rear side of the vehicle with respect to the forefront of the vehicle, the predetermined design requirements of the front portion of the vehicle can be satisfied. can satisfy
Further, according to the present embodiment, the shock absorbing portion (shock absorbing member) 30 is positioned inside the bumper fascia 8 in front of the vehicle with respect to the lens portion 32 and the unit body portion 34 of the headlamp unit 12 in a side view. In the event of a frontal collision, collision energy is absorbed by coming into contact with the unit main body 34 of the headlamp unit 12 . To prevent a collision from occurring directly and to absorb the collision energy by a shock absorbing part 30 in front of the vehicle from the headlamp unit 12, thereby suppressing excessive increase in the collision load applied to the pedestrian. can be done.
As a result, according to the present embodiment, it is possible to satisfy both the design requirements and the pedestrian protection performance.

Further, according to the present embodiment, at least one of the vehicle width direction side surfaces 30a and 30b of the impact absorbing portion 30 has an inner side surface 30a that suppresses the impact absorbing portion 30 from collapsing in the vehicle width direction in the event of a frontal collision. Since the support member 30h is provided, it is possible to more effectively suppress the reduction in the degree of absorption of impact energy by the impact absorbing portion 30 itself.

Further, according to the present embodiment, the impact absorbing portion 30 has a rectangular front portion 30e, and the front portion 30e is formed with a bead portion 30f extending along a diagonal line. The reaction force at the initial stage of collision can be increased by transmitting it to the corners of the impact absorbing portion 30 via the bead portion 30f, so that the impact energy can be more effectively absorbed by the impact absorbing portion 30 itself. .

In addition, according to the present embodiment, the impact absorbing portion 30 is integrally formed with the grille reinforcement 28, which is a reinforcing member of the bumper fascia 8. Therefore, the design requirements are more effectively satisfied and the walking distance is reduced. It is possible to achieve both human protection performance.

Further, according to the present embodiment, the impact absorbing portion 30 is formed with a rear projection portion 30g extending rearward of the vehicle, and the rear projection portion 30g contacts the unit main body portion 34 of the headlamp unit 12 in the event of a frontal collision. More effectively, the impact energy can be absorbed by the impact absorbing portion 30 itself.

1 Vehicle 8 Bumper Fascia 8a Bumper Fascia Protruding Surface 8d Bumper Fascia Left and Right Bulging Portions 10 Front Grille 12 Head Lamp Unit 24 Shroud Upper Member 28 Grill Reinforcement (Reinforcing Member)
30 shock absorbing part (shock absorbing member)
30a inner surface 30e front surface 30f bead/rear projection 30g rear projection (protrusion)
30h support portion (support member)
32 lens portion 34 unit body portion

Claims (5)

a vehicle headlamp unit comprising a lens portion that emits light and a unit body portion provided below the lens portion;
a bumper fascia having a projecting surface projecting forward of the vehicle from a lower portion of the lens portion of the headlamp unit;
a shock absorbing member located in front of the vehicle with respect to the lens portion and the unit main body portion of the headlamp unit inside the bumper fascia in a side view,
The front body structure of a vehicle, wherein the shock absorbing member absorbs collision energy by coming into contact with the unit main body of the headlamp unit at the time of a frontal collision. 2. The front part of the vehicle according to claim 1, wherein at least one of both sides of the impact absorbing member in the vehicle width direction is provided with a supporting member for suppressing the tilting of the impact absorbing member in the vehicle width direction at the time of a frontal collision. car body structure. 3. The front vehicle body of a vehicle according to claim 1, wherein said impact absorbing member has a rectangular front portion, and a bead portion extending along a diagonal line is formed on said front portion. structure. 4. The front body structure of a vehicle according to claim 1, wherein said shock absorbing member is formed integrally with said reinforcing member of said bumper fascia inside said bumper fascia. 5. The vehicle according to any one of claims 1 to 4, wherein the impact absorbing member is formed with a projecting portion extending rearward of the vehicle, and the projecting portion comes into contact with the unit body portion of the headlamp unit in the event of a frontal collision. front body structure.

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