Vehicle front body structure

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

[Technical field]

[0001] The present invention relates to a front body structure of a vehicle, and more particularly to a front body structure of a vehicle equipped with an impact absorbing member for pedestrian protection forward of a headlamp unit of the vehicle. [Background technology]

[0002] 2. Description of the Related Art Energy absorbing structures for protecting pedestrians around headlamp units of vehicles have been studied. For example, a front body structure for a vehicle has been proposed that is provided with a load transmission part that transmits the input load from the headlamp in order to reduce the resistance force when a pedestrian's head, thighs, etc. collide with the hood panel side, while ensuring sufficient resistance force in the event of a light collision from the bumper side (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-71675 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, while the front body structure of the vehicle described in Patent Document 1 can reduce the impact on pedestrians by transmitting the load input to the headlamp to the rear of the vehicle, the load is input directly to the headlamp itself, which may result in failure of the headlamp unit itself.

[0005] In addition, in large vehicles such as SUVs, the height from the ground to the top of the bonnet is high, so that in the event of a frontal collision, the pedestrian's thighs strike the vehicle from the front in a nearly horizontal direction, i.e., vertically against the front bumper fascia.

[0006] Here, when a headlamp unit receives an input load from above the vehicle, the mounting portion of the headlamp unit may be able to disperse the load by deforming, etc. However, a headlamp unit usually has high mounting strength in the front-to-rear direction, and is therefore unable to absorb sufficient energy when a pedestrian's thighs collide horizontally from the front, and there is a risk that a high impact load will be applied to the pedestrian.

[0007] In order to reduce the impact load that the headlamp unit applies to a pedestrian, the headlamp unit itself may simply be positioned toward the rear of the vehicle. However, in such a case, a new problem arises in order to satisfy the design requirements for the front of the vehicle. In response to the above problems, the present inventors have considered a collision mode according to the size of the vehicle and have investigated a vehicle front structure that satisfies design requirements while also achieving pedestrian protection performance.

[0008] Therefore, the present invention has been made to solve the above-mentioned problems, and has an object to provide a front body structure of a vehicle that can satisfy design requirements while also achieving pedestrian protection performance. [Means for solving the problem]

[0009] In order to solve the above-mentioned problems, the present invention provides a headlamp unit for a vehicle including a lens portion that irradiates light and a unit body portion provided below the lens portion, a bumper fascia including a protruding surface that protrudes from a lower portion of the lens portion of the headlamp unit toward the front of the vehicle, and an impact absorbing member located inside the bumper fascia and forward of the vehicle with respect to the lens portion and unit body portion of the headlamp unit in a side view, wherein the impact absorbing member absorbs collision energy by coming into contact with the unit body portion of the headlamp unit during a frontal collision. At least one of both sides of the impact absorbing member in the vehicle width direction is provided with a support member that suppresses the impact absorbing member from collapsing in the vehicle width direction during a frontal collision. It is characterized by the following.

[0010] According to the present invention configured as described above, the headlamp unit includes a lens portion that irradiates light and a unit body portion provided below the lens portion, and the bumper fascia includes a protruding surface that protrudes from the lower portion of the lens portion of the headlamp unit toward the front of the vehicle, so that the specified design requirements for the front of the vehicle can be met. Also, according to the present invention, the impact absorbing member is located on the inside of the bumper fascia in side view and forward of the vehicle relative to the lens portion and unit body portion of the headlamp unit, and in the event of a front collision, the impact absorbing member abuts against the unit body portion of the headlamp unit to absorb the collision energy. Therefore, according to the present invention, in the event of a front collision (in the event of a pedestrian collision), for example, the thigh of a pedestrian does not collide directly with the headlamp unit, but the impact absorbing member located forward of the headlamp unit can receive the load and absorb the collision energy, thereby preventing the collision load applied to the pedestrian from becoming excessively large. As a result, according to the present invention, it is possible to satisfy the design requirements and achieve pedestrian protection performance at the same time.

[0011] Also, According to the present invention configured in this manner, in the event of a forward collision, the support member prevents the impact absorbing member from collapsing in the vehicle width direction, thereby more effectively preventing a reduction in the degree to which the impact energy is absorbed by the impact absorbing member itself.

[0012] In order to solve the above-mentioned problems, the present invention provides a headlamp unit for a vehicle including a lens portion that irradiates light and a unit body portion provided below the lens portion, a bumper fascia including a protruding surface that protrudes from a lower portion of the lens portion of the headlamp unit toward the front of the vehicle, and an impact absorbing member located inside the bumper fascia and forward of the vehicle with respect to the lens portion and unit body portion of the headlamp unit in a side view, wherein the impact absorbing member absorbs collision energy by abutting against the unit body portion of the headlamp unit in the event of a frontal collision, The shock absorbing member has a rectangular front surface, and a bead portion is formed on the front surface so as to extend along the diagonal line of the front surface. , which is its characteristic. According to the present invention configured as described above, the headlamp unit includes a lens portion that irradiates light and a unit body portion provided below the lens portion, and the bumper fascia includes a protruding surface that protrudes from the lower portion of the lens portion of the headlamp unit toward the front of the vehicle, so that the specified design requirements for the front of the vehicle can be met. Also, according to the present invention, the impact absorbing member is located on the inside of the bumper fascia in side view and forward of the vehicle relative to the lens portion and unit body portion of the headlamp unit, and in the event of a front collision, the impact absorbing member abuts against the unit body portion of the headlamp unit to absorb the collision energy. Therefore, according to the present invention, in the event of a front collision (in the event of a pedestrian collision), for example, the thigh of a pedestrian does not collide directly with the headlamp unit, but the impact absorbing member located forward of the headlamp unit can receive the load and absorb the collision energy, thereby preventing the collision load applied to the pedestrian from becoming excessively large. As a result, according to the present invention, it is possible to satisfy the design requirements and achieve pedestrian protection performance at the same time. Also, According to the present invention configured in this manner, the collision load can be transmitted to the corners of the impact absorbing member via the bead portion, thereby increasing the reaction force at the beginning of the collision, and thereby enabling the impact energy to be absorbed more effectively by the impact absorbing member itself.

[0013] In the present invention, the impact absorbing member is preferably formed integrally with a reinforcing member of the bumper fascia on the inner side of the bumper fascia. According to the present invention configured in this manner, it is possible to more effectively satisfy design requirements while simultaneously achieving pedestrian protection performance.

[0014] In the present invention, the impact absorbing member is preferably formed with a protrusion extending rearward of the vehicle, and in the event of a frontal collision, the protrusion comes into contact with the unit body of the headlamp unit. According to the present invention configured in this manner, the impact energy can be absorbed more effectively by the impact absorbing member itself. Effect of the Invention

[0015] According to the vehicle front body structure of the present invention, it is possible to satisfy design requirements while also achieving pedestrian protection performance. [Brief description of the drawings]

[0016] [Figure 1] 1 is a perspective view of a front part of a vehicle equipped with a vehicle front body structure according to an embodiment of the present invention, viewed from the right side and diagonally above the vehicle. [Diagram 2] 1 is a partially sectional side view of a front vehicle body structure of a vehicle according to an embodiment of the present invention, as viewed from the right side of the vehicle. [Diagram 3] 2 is an enlarged perspective view showing a main portion of the front vehicle body structure of the vehicle according to the present embodiment. FIG. [Figure 4] 4 is a side view of a main part of the front body structure of the vehicle of FIG. 3, viewed from the right side of the vehicle. [Diagram 5] 4 is a front view of a main part of the front body structure of the vehicle of FIG. 3, as viewed from the front of the vehicle. [Figure 6] 1 is a perspective view of an impact absorbing portion of a grill reinforcement according to an embodiment of the present invention, as viewed obliquely from above and to the right of the vehicle. FIG. [Figure 7] 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. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a front body structure of a vehicle according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0018] First, a vehicle front body structure according to an embodiment of the present invention will be described with reference to Figures 1 and 2. Figure 1 is a perspective view of the front of a vehicle equipped with a vehicle front body structure according to an embodiment of the present invention, viewed from the right side and diagonally above the vehicle, and Figure 2 is a partially cross-sectional side view of the vehicle front body structure according to this embodiment, viewed from the right side of the vehicle.

[0019] First, as shown in FIG. 1, a vehicle 1 equipped with a vehicle front body structure according to an embodiment of the present invention is provided at its front with a bonnet hood 4 covering an engine compartment 2, a grill upper panel 6 extending in the vehicle width direction in front of the bonnet hood 4, a bumper fascia 8 provided below the grill upper panel 6 and on the front side of the vehicle 1, a front grille 10 provided between the grill upper panel 6 and the bumper fascia 8, headlamp units 12 arranged on both the left and right sides of the front grille 10 and above the bumper fascia 8, and front fenders 14 provided on both the left and right sides of the bonnet hood 4 and on the sides of the vehicle.

[0020] Next, as shown in FIG. 2, the vehicle 1 is provided with, as frame members constituting the vehicle body, a pair of left and right front side frames 16 extending in the fore-and-aft direction of the vehicle in the engine compartment 2, crash cans 18 provided at each front end of the front side frames 16, and bumper reinforcements 20 attached to the front ends of the crash cans and extending in the vehicle width direction. In addition, a pair of left and right apron members 22 extending in the fore-and-aft direction of the vehicle are provided at the front of the vehicle 1 above the engine compartment 2 and on both the left and right sides, and suspension towers 23 are connected to these apron members 22 and the front side frames 16.

[0021] The front end of each apron member 22 on the vehicle front side is curved inward in the vehicle width direction, and these end ends are connected to each other by the shroud upper member 24. Furthermore, connecting members 26 are provided at both ends of the shroud upper member 24, respectively, for connecting the shroud upper member 24 to the front side frames 16 below it in the up-down direction.

[0022] The vehicle 1 also includes a resin grill reinforcement 28 that is attached to the bumper reinforcement 20, a bumper support bracket (not shown), and the like, and mainly supports and reinforces the bumper fascia 8 and the front grill 10. In this embodiment, shock absorbing parts (shock absorbing members) 30 are formed on both the left and right sides of the grill reinforcement 28 in the vehicle width direction to absorb the shock of an obstacle (such as a pedestrian's thigh) from the front of the vehicle.

[0023] Next, the headlamp unit 12 of this embodiment includes a lens portion 32 that irradiates light, and a unit body portion 34 provided below the lens portion 32. A light source (not shown) that emits light, such as an LED, is provided inside the lens portion 32, and the unit body portion 34 houses a controller that controls the light source, etc.

[0024] The headlamp unit 12 is attached mainly at its upper portion to and supported by a bracket (not shown) or the like at the tip of the apron member 22, which is a frame member of the vehicle body described above. The headlamp unit 12 is also attached to and supported by the front fender 14 (see FIG. 1).

[0025] 1 and 2, in this embodiment, the headlamp unit 12 is disposed so as to be located rearward in the vehicle longitudinal direction with respect to the frontmost part of the vehicle where the front grille 10 is provided. This disposition prevents an impact load from being applied directly from the headlamp unit 12 to the pedestrian when the pedestrian collides with the front part of the vehicle.

[0026] In addition, to accommodate this arrangement, as shown in FIG. 1, the bumper fascia 8 is formed with a protruding surface 8a that protrudes from the lower portion of the lens portion 32 toward the front of the vehicle, thereby ensuring a good design when the headlamp unit 12 is arranged at the rear of the vehicle. 1, the bumper fascia 8 is formed with bulging portions 8b that extend downward from the front edge of each protruding surface 8a at both left and right ends in the vehicle width direction and bulge out to a front position approximately equal to the front grille 10, and side portions 8c that extend downward from the side edges of each protruding surface 8a. The bulging portions formed by these protruding surfaces 8a, bulging portions 8b, and side portions 8c are referred to as left and right bulging portions 8d of the bumper fascia 8.

[0027] Next, the configuration of both left and right ends in the vehicle width direction of the vehicle front body structure according to this embodiment will be further described with reference to Figures 1 to 5. Figure 3 is an enlarged perspective view showing a main part of the vehicle front body structure according to this embodiment, Figure 4 is a side view of the main part of the vehicle front body structure of Figure 3 as seen from the right side of the vehicle, and Figure 5 is a front view of the main part of the vehicle front body structure of Figure 3 as seen from the front of the vehicle. First, as shown in FIGS. 1 to 3, the impact absorbing portions 30 of the above-mentioned grill reinforcement 28 are housed inside the left and right bulging portions 8d of the bumper fascia 8. As shown in FIG. 2 to 5, the impact absorbing section 30 is disposed so as to be located below the lens section 32 of the headlamp unit 12 and in front of the unit body section 34. As shown in particular in Figures 2 and 4, the impact absorbing section 30 is located in front of the unit body section 34 of the headlamp unit 12 in a side view.

[0028] Next, the configuration of the impact absorbing portion 30 of the vehicle front body structure according to this embodiment will be further described with reference to Figures 3 to 7. Figure 6 is a perspective view of the impact absorbing portion of the grill reinforcement according to this embodiment, seen from the right side of the vehicle and diagonally from above, and Figure 7 is a partially sectional side view of the impact absorbing portion of the grill reinforcement shown in Figure 6, seen from the inside in the vehicle width direction. 3 to 7, the impact absorbing part 30 has an inner side surface 30a on the inside in the vehicle width direction, an outer side surface 30b on the outside in the vehicle width direction, an upper side surface 30c on the vehicle upper side, and a lower side surface 30d on the vehicle lower side, and further has a rectangular front surface portion 30e formed continuously with the inner side surface 30a, the outer side surface 30b, the upper side surface 30c, and the lower side surface 30d. The impact absorbing part 30 is mainly formed in a box shape by each of the surfaces 30a to 30e.

[0029] As shown in FIGS. 4 and 5, the shock absorbing portion 30 is formed so that the box-shaped portions 30a to 30e are located forward and below the lens portion 32. As shown in FIG. Two bead portions 30f that extend diagonally and intersect are formed on the front surface 30e of the impact absorbing part 30. In this embodiment, the bead portions 30f are configured as rearward protruding portions (groove portions) that protrude toward the rear of the vehicle relative to the remaining surface of the front surface 30e.

[0030] Next, as shown in Figs. 2, 4 and 7, a rear protruding portion 30g is formed at the rear portion of the impact absorbing portion 30, extending toward the rear of the vehicle. 2 and 4, the rear protrusion 30g is formed at a position facing the unit body 34 of the headlamp unit 12 in the vehicle front-rear direction. Due to this positional relationship, the rear protrusion 30g comes into contact with the unit body 34 when the impact absorbing section 30 is displaced toward the rear of the vehicle during a frontal collision of the vehicle. During a frontal collision, the unit body 34 receives the collision load transmitted via the rear protrusion 30g, thereby facilitating the absorption of impact by the impact absorbing section 30. In other words, since the headlamp unit 12 is attached to a frame member of the vehicle body as described above, it can effectively receive the load.

[0031] Next, as shown in Fig. 3 and Fig. 5 to Fig. 7, a support portion (support member) 30h extending in the vehicle width direction is provided on the inner side surface 30a of the impact absorbing portion 30. In this embodiment, the support portion 30h is a rib formed integrally with the grill reinforcement 28. In this embodiment, such a support portion 30h supports the inner side surface 30a of the impact absorbing portion 30, and such support prevents the impact absorbing portion 30 from collapsing in the vehicle width direction when the impact absorbing portion 30 receives a load. Note that a support member having a similar collapse suppression function may also be provided on the outer side surface 30b of the impact absorbing portion 30.

[0032] Next, the effects of the vehicle front body structure according to the embodiment of the present invention will be described. First, according to an embodiment of the present invention, headlamp unit 12 comprises lens portion 32 that irradiates light and unit body portion 34 provided below lens portion 32, and bumper fascia 8 comprises protruding surface 8a that protrudes forward of the vehicle from a lower portion of lens portion 32 of headlamp unit 12, so that even if headlamp unit 12 is positioned rearward of the vehicle relative to the front of the vehicle, specified design requirements for the front of the vehicle can be met. Furthermore, according to this embodiment, the impact absorbing section (impact absorbing member) 30 is located inside the bumper fascia 8 and forward of the vehicle relative to the lens section 32 and unit main body section 34 of the headlamp unit 12 in a side view, and absorbs collision energy by abutting against the unit main body section 34 of the headlamp unit 12 during a frontal collision. Therefore, during a frontal collision (when a pedestrian is hit), for example, the pedestrian's thigh does not collide directly with the headlamp unit 12, and the collision energy can be absorbed by the impact absorbing section 30 located forward of the headlamp unit 12, thereby preventing the collision load on the pedestrian from becoming excessively large. As a result, according to this embodiment, it is possible to satisfy design requirements while also achieving pedestrian protection performance.

[0033] Furthermore, according to this embodiment, a support member 30h is provided on at least one of the inner surfaces 30a of the impact absorbing section 30 on both vehicle width side surfaces 30a, 30b, thereby preventing the impact absorbing section 30 from collapsing in the vehicle width direction during a forward collision, thereby more effectively preventing a decrease in the degree to which the impact energy is absorbed by the impact absorbing section 30 itself.

[0034] Furthermore, according to this embodiment, the impact absorbing section 30 has a rectangular front portion 30e, and bead portions 30f extending diagonally are formed on this front portion 30e. Therefore, the collision load can be transmitted to the corners of the impact absorbing section 30 via the bead portions 30f, thereby increasing the reaction force at the initial stage of the collision. This enables the impact absorbing section 30 itself to absorb impact energy more effectively.

[0035] Furthermore, according to this embodiment, the impact absorbing portion 30 is formed integrally with the grill reinforcement 28, which is a reinforcing member of the bumper fascia 8, so that it is possible to more effectively satisfy design requirements while also achieving pedestrian protection performance.

[0036] Furthermore, according to this embodiment, the impact absorbing section 30 is formed with a rearward protruding section 30g extending toward the rear of the vehicle, and in the event of a forward collision, the rearward protruding section 30g abuts against the unit main body section 34 of the headlamp unit 12, so that the impact energy can be absorbed more effectively by the impact absorbing section 30 itself. [Explanation of symbols]

[0037] 1 vehicle 8 Bumper fascia 8a Bumper fascia protruding surface 8d Bumper fascia left and right bulges 10 Front Grill 12 Headlamp unit 24 Shroud upper member 28 Grill reinforcement (reinforcement material) 30 Shock absorbing part (shock absorbing material) 30a Inside surface 30e front part 30f Bead part / rear protrusion 30g Rear protrusion (protrusion) 30h Support part (support member) 32 Lens section 34 Unit body

Claims

1. a headlamp unit for a vehicle including a lens portion for emitting light and a unit body portion provided below the lens portion; a bumper fascia including a protruding surface protruding from a lower portion of a lens portion of the headlamp unit toward a front of the vehicle; an impact absorbing member located inside the bumper fascia and forward of the vehicle with respect to a lens portion and a unit main body portion of the headlamp unit in a side view; The impact absorbing member absorbs collision energy by contacting with the unit body of the headlamp unit during a front collision, A front body structure for a vehicle, characterized in that a support member is provided on at least one of both sides in the vehicle width direction of the impact absorbing member, which suppresses the impact absorbing member from collapsing in the vehicle width direction during a frontal collision.

2. a headlamp unit for a vehicle including a lens portion for emitting light and a unit body portion provided below the lens portion; a bumper fascia including a protruding surface protruding from a lower portion of a lens portion of the headlamp unit toward a front of the vehicle; an impact absorbing member located inside the bumper fascia and forward of the vehicle with respect to a lens portion and a unit main body portion of the headlamp unit in a side view; The impact absorbing member absorbs collision energy by contacting with a unit body of the headlamp unit during a front collision, a front body structure for a vehicle, the front portion having a rectangular shape, the front portion being provided with a bead portion extending along a diagonal line of the front portion;

3. 3. The front body structure for a vehicle according to claim 1, wherein the impact absorbing member is formed integrally with a reinforcing member of the bumper fascia on the inner side of the bumper fascia.

4. 4. The front body structure of a vehicle according to claim 1, wherein the impact absorbing member is formed with a protrusion extending toward the rear of the vehicle, and in the event of a frontal collision, the protrusion abuts against the unit main body of the headlamp unit.

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