JP6481731B1 - Front body structure of the vehicle - Google Patents

Abstract

A headlight unit is prevented from being damaged and a pedestrian is protected at a high level in a forward collision. An upper face of a bumper facer is covered with an upper facer. The headlight unit 60 is disposed at a position deeper than the front end of the bumper fascia 10. The end of the upper fascia 20 in the vehicle width direction extends to the upper part of the front portion of the headlight unit 60. A cover member 50 extending in the front-rear direction is disposed between the upper facer 20 and the headlight unit 60. The cover member 50 has an impact absorbing portion 54 formed of, for example, a rib structure at a front portion 51 thereof. [Selection] Figure 9

Description

  The present invention relates to a front body structure of a vehicle.

  In some vehicles, an outer surface of a front end portion thereof is configured by a bumper fascia (facial lower member) and an upper facer (facia upper member) disposed so as to cover the upper end portion thereof.

  In Patent Document 1, a lamp is disposed in a mounting opening formed in a lower end portion of a bumper fascia so that an armature serving as a strength portion of a bumper body is positioned above the lamp. In which an EA material (buffer material) is disposed. Patent Document 2 discloses a headlight mounting structure that can absorb a load from above.

JP-A-8-276783 JP 2011-121399 A

  By the way, in the vehicle, a headlight unit is disposed at a position recessed rearward with respect to the front end of the bumper fascia, and an end of the upper fascia covering the upper end of the bumper fascia is a headlight. Some are extended laterally so as to be located above the front end of the unit.

  On the other hand, it is desired that the headlight unit is not damaged at the time of forward collision, particularly at the time of light collision. In particular, recent headlight units are expensive due to the use of a high-intensity discharge type or LEDs, and it is important to prevent damage during light collisions.

  On the other hand, when the target object of the forward collision is a pedestrian, it is desired to perform shock absorption to appropriately protect the pedestrian.

  The present invention has been made in view of the above circumstances, and its object is to satisfy the high level of both the prevention of damage to the headlight unit during a light collision while ensuring a shock absorbing function during a forward collision. An object of the present invention is to provide a front body structure of a vehicle that can be used.

In order to achieve the above object, the following solution is adopted in the present invention. That is, as described in claim 1,
The upper end of the bumper fascia is covered with an upper fascia,
A headlight unit is disposed at a position recessed behind the front end of the bumper fascia,
An end of the upper fascia in the vehicle width direction extends sideways so as to be located above the front end of the headlight unit,
Between the upper fascia and the headlight unit, a cover member extending in the front-rear direction is disposed,
An impact absorbing portion is formed at the front portion of the cover member,
It is like that.

  According to the above-described solution method, at the time of a light collision forward, the cover member receives the collision load and prevents the collision load from being input to the headlight unit, thereby preventing the headlight unit from being damaged. When the collision object is a pedestrian, the impact is absorbed by the impact absorbing portion of the cover member, and the pedestrian is protected. Of course, it is also preferable for preventing deformation of the upper fascia. This is particularly suitable when the collision load is directed rearward and downward.

A preferred mode based on the above solution is as described in claim 2 and the following. That is,
The front end of the cover member is positioned forward of the front end of the headlight unit;
The impact absorbing portion is formed to extend forward from the front end of the headlight unit.
(Corresponding to claim 2). In this case, the effect corresponding to claim 1 can be obtained even in the case where the impact absorbing portion exists up to the front of the headlight unit and the collision load is input so as to be directed substantially straight rearward.

The upper fascia is disposed immediately before the bonnet,
The impact absorbing portion is formed on the front side of the front end of the bonnet,
(Corresponding to claim 3). In this case, a situation in which a collision load is input to the bonnet is prevented or suppressed, which is preferable for preventing deformation of the bonnet.

A closed cross section is formed by the upper fascia and the cover member,
The shock absorbing part is formed so as to be located in the closed cross section,
(Corresponding to claim 4). In this case, the impact absorbing portion can be configured by effectively utilizing the space in the closed cross section while increasing the support rigidity at the end of the upper fascia in the vehicle width direction.

The rear end of the cover member is fixed to the vehicle body member,
The front end portion of the cover member supports the front end portion of the upper fascia from below.
(Corresponding to claim 5). In this case, the support rigidity of the upper facer can be increased by effectively using the cover member.

The cover member extends in the vehicle width direction, and extends further inward in the vehicle width direction than the inner end in the vehicle width direction of the headlight unit,
The cover member and the impact absorbing portion are formed such that the height in the vertical direction becomes higher toward the inner side in the vehicle width direction.
(Corresponding to claim 6). In this case, the upper fascia is often designed to gradually become lower toward the end in the vehicle width direction, but such a design requirement can be satisfied. Further, it is possible to obtain a stiffness distribution corresponding to the fact that a larger collision load is more easily input to the vehicle width direction center portion side than the vehicle width direction end portion side during a front collision.

  The cover member is formed of a synthetic resin, and the shock absorbing portion is formed of a rib structure (corresponding to claim 7). In this case, it is possible to easily configure an impact absorbing portion set so as to be able to absorb a desired impact with a rib structure while reducing the weight.

Between the bumper fascia and the upper fascia, a reinforcing member that extends in the front-rear direction and is formed with an impact absorbing portion on the inner side in the vehicle width direction than the cover member is disposed,
The impact absorbing portion in the cover member has a lower rigidity than the impact absorbing portion in the reinforcing member.
This is done (corresponding to claim 8). In this case, it is possible to obtain a stiffness distribution corresponding to the fact that a larger collision load is more easily input to the vehicle width direction center portion side than the vehicle width direction end portion side at the time of a forward collision.

  According to the present invention, it is possible to satisfy both the prevention of damage to the headlight unit at the time of a light collision at a high level while ensuring the shock absorbing function at the time of a forward collision.

The side view which shows the left front part of the vehicle by this invention. The figure which looked at the left front part of the vehicle shown in FIG. 1 from the front. The perspective view which shows the assembly | attachment state of a bumper fascia, an upper fascia, a grill member, a reinforcement member, and a cover member. The perspective view which shows the state which removed the upper fascia, the grill member, and the cover member from the assembly of FIG. The top view which shows the state of the left front part in the state which assembled | attached the headlight unit from the state of FIG. The top view which shows the state which removed the upper facer from the assembly shown in FIG. The cover member is shown, and is a perspective view when viewed substantially from the inner side in the vehicle width direction. The perspective view when a cover member is seen from diagonally upward. Sectional drawing in the X9-X9 line | wire equivalent of FIG. Sectional drawing equivalent to the X10-X10 line | wire of FIG.

  1 and 2, 10 is a bumper fascia, and 20 is an upper fascia. The bumper facer 10 and the upper facer 20 constitute an outer surface of the vehicle front end. The bumper facer 10 and the upper facer 20 are formed thin with synthetic resin.

  The upper facer 20 is located in front of the bonnet 1 and covers the upper end of the bumper facer 10 from above. In particular, as shown in FIGS. 9 and 10, the upper facer 20 has an inclined portion 21 whose front end portion is inclined forward and downward, and extends from the rear end of the inclined portion 21 shortly downward one end. The rear extending portion 22 extends downward from the bonnet 1. The rear end of the inclined portion 21 of the upper facer 20 is continuous with the front end of the bonnet 1.

  FIG. 4 shows a radiator shroud 2 as a vehicle body strength member, and a shroud upper member 3 as a vehicle body strength member integrated at the upper end thereof. The radiator shroud 2 is disposed between a pair of left and right front frames 7 (see FIG. 9), and the lower end portion of the radiator shroud 2 is connected to the pair of left and right front frames 7 via a connection bracket (not shown). . The shroud door member 3 extends in the vehicle width direction, and each end thereof is connected to the front end of the apron rain 6 (see FIGS. 5 and 6). A front fender 5 is attached to the apron rain 6. The front end of the front fender 5 is continuous with the rear end of each end in the vehicle width direction of the bumper facer 10 and the upper facer 20.

  The bumper fascia 10 has a large grill opening 11 for taking in the running wind at the center thereof (in particular, see FIG. 4), and a grill member 12 (see FIGS. 1 to 3) is arranged in the grill opening 11. It is installed. The upper end portion of the bumper fascia 10 has a rearward extending portion that extends substantially horizontally rearward, and the rear end portion thereof is fixed to the shroud door member 3 by a fixture. The shroud door member 3 is connected to a rear extending portion of the upper fascia 20 via an attachment stay (not shown) extending in the front-rear direction. Note that the end of the upper fascia 20 in the vehicle width direction is connected to the apron rain 6.

  A reinforcing member 30 extending in the front-rear direction is disposed between the bumper facer 10 and the upper facer 20 in the center in the vehicle width direction (see FIGS. 3 and 4). The reinforcing member 30 is formed of a synthetic resin into a shape as shown in FIG. An impact absorbing portion having a rib structure projecting downward is formed at the front portion of the reinforcing member 30.

  As shown in FIGS. 1 to 3 and 5, an opening 10 a for attaching a headlight is formed at the end of the bumper fascia 10 in the vehicle width direction. The opening 10 a is covered from above by the vehicle width direction end of the upper facer 20.

  A headlight unit 60 is disposed facing the opening 10a. The front end (lens surface) of the headlight unit 60 is a position recessed behind the bumper fascia 10. And the vehicle width direction end part of the upper fascia 20 is positioned so as to cover the front upper part of the headlight unit 60.

  As shown in FIGS. 9 and 10, a cover member 50 extending in the front-rear direction and the vehicle width direction is disposed between the headlight unit 60 and the upper facer 20. The cover member 50 is formed of synthetic resin, and the inner end in the vehicle width direction is located in the immediate vicinity of the reinforcing member 30.

  As shown in FIGS. 7 and 8, the cover member 50 has a front wall 51 having a vertical wall 51a extending in the vertical direction and a bottom wall 51b extending forward from the lower end of the vertical wall 51a. An impact absorbing portion 54 is formed on the front portion 51. As shown in FIG. 8, the shock absorbing portion 54 extends in the vehicle width direction and has a plurality of lateral rib portions disposed at intervals in the front-rear direction, and extends in the vehicle front-rear direction and in the vehicle width direction. A rib structure having a plurality of vertical rib portions arranged at intervals.

  The cover member 50 has a rear extending portion 52 extending rearward from the rear end of the shock absorbing portion 54, and the rear end portion of the rear extending portion 52 is fixed to the shroud door member 3 by the fixing device 57. It is fixed (see FIG. 10). In addition, the attachment hole for the fixing tool 57 formed in the cover member 50 or its position is shown by the code | symbol 55 in FIG. 7, FIG.

  The cover member 50 has a front extending portion 53 that extends further forward from the front portion 51 (the bottom wall portion 51b thereof). On the front extending portion 53, the front end portion of the upper fascia 20 is supported in a seated state. Further, the rear extending portion of the upper facer 20 is disposed on the rear extending portion 52 of the cover member 50 so as to overlap. As a result, the space between the cover member 50 and the upper facer 20 is formed as a space with a closed cross section, and the rib structure that constitutes the shock absorbing portion 54 described above is positioned within this closed cross section.

  Here, the rear end of the shock absorbing portion 54 is located at the same or the front of the front end of the bonnet 1 (see FIGS. 9 and 10). Further, below the rear end portion of the shock absorbing portion 54, the front end of the bumper reinforcement 4 configured at the front end portion of the front frame 7 and extending in the vehicle width direction is positioned (see FIG. 9). Further, the shock absorbing portion 54 is formed so as to extend from the front end portion of the headlight unit 60 to the front thereof in the front-rear direction.

  In the configuration as described above, it is assumed that the front collision is a light collision. In this case, the small collision load input to the upper facer 20 is received by the cover member 50, and the collision load is prevented from being input to the headlight unit 60 (protection of the headlight unit 60). .

  When the collision object is a pedestrian and a considerably large load is input from the pedestrian, the shock absorbing portion 54 absorbs the shock (deformation of the cover member 50 in the front-rear direction or the front portion 51). Pedestrian protection is performed. When the upper fascia 20 is leaning against a human hand, the cover member 50 receives this load, and the deformation of the upper fascia 20 is prevented.

  Here, the rigidity of the shock absorbing portion 54 in the cover member 50 is set lower than the rigidity of the shock absorbing portion in the reinforcing member 30 at the center in the vehicle width direction. That is, in consideration of the collision mode, the rigidity of the shock absorbing portion 54 in the cover member 50 is protected for pedestrians in consideration of the fact that a greater load is more easily input at the vehicle width direction center than at the vehicle width direction end. From the point of view, it is set as low as possible.

  Further, the cover member 50 gradually increases in height as it goes inward in the vehicle width direction (the height of the rib structure forming the shock absorbing portion 54 is also changed in the same manner). . Such setting corresponds to a design design in which the upper fascia 20 gradually decreases toward the vehicle width direction end, and the rigidity of the cover member 50 is gradually decreased toward the vehicle width direction end. Preferred above.

  Although the embodiments have been described above, the present invention is not limited to the embodiments, and appropriate modifications can be made within the scope of the claims. Of course, the object of the present invention is not limited to what is explicitly stated, but also implicitly includes providing what is substantially preferred or expressed as an advantage.

  The present invention is suitable as a front structure of a vehicle.

1: Bonnet 2: Radiator shroud 3: Shrouded upper member 4: Bumper reinforcement 10: Bumper faucet 20: Upper facer 21: Inclined part 30: Reinforcing member 50: Cover member 51: Front part 52: Rear extension part 53: Front extension 54: Shock absorber 55: Mounting hole (mounting position)
57: Fixing device 60: Headlight unit

Claims (8)

The upper end of the bumper fascia is covered with an upper fascia,
A headlight unit is disposed at a position recessed behind the front end of the bumper fascia,
An end of the upper fascia in the vehicle width direction extends sideways so as to be located above the front end of the headlight unit,
Between the upper fascia and the headlight unit, a cover member extending in the front-rear direction is disposed,
An impact absorbing portion is formed at the front portion of the cover member,
A vehicle front body structure characterized by that. In claim 1,
The front end of the cover member is positioned forward of the front end of the headlight unit;
The impact absorbing portion is formed to extend forward from the front end of the headlight unit.
A vehicle front body structure characterized by that. In claim 1 or claim 2,
The upper fascia is disposed immediately before the bonnet,
The impact absorbing portion is formed on the front side of the front end of the bonnet,
A vehicle front body structure characterized by that. In any one of Claims 1 thru | or 3,
A closed cross section is formed by the upper fascia and the cover member,
The shock absorbing part is formed so as to be located in the closed cross section,
A vehicle front body structure characterized by that. In any one of Claims 1 thru | or 4,
The rear end of the cover member is fixed to the vehicle body member,
The front end portion of the cover member supports the front end portion of the upper fascia from below.
A vehicle front body structure characterized by that. In any one of Claims 1 thru | or 5,
The cover member extends in the vehicle width direction, and extends further inward in the vehicle width direction than the inner end in the vehicle width direction of the headlight unit,
The cover member and the impact absorbing portion are formed such that the height in the vertical direction becomes higher toward the inner side in the vehicle width direction.
A vehicle front body structure characterized by that. In any one of Claims 1 thru | or 6,
A front vehicle body structure for a vehicle, wherein the cover member is formed of a synthetic resin and the impact absorbing portion is formed of a rib structure. In any one of Claims 1 thru | or 7,
Between the bumper fascia and the upper fascia, a reinforcing member that extends in the front-rear direction and is formed with an impact absorbing portion on the inner side in the vehicle width direction than the cover member is disposed,
The impact absorbing portion in the cover member has a lower rigidity than the impact absorbing portion in the reinforcing member.
A vehicle front body structure characterized by that.

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