JP5087461B2 - Vehicle front structure - Google Patents

Description

  The present invention relates to a vehicle body front structure, and more particularly to a vehicle body front structure suitable for an SUV (Sports Utility Vehicle).

Some vehicles, such as automobiles, employ a vehicle body front structure suitable for scooping up the object to be collided on the front hood of the vehicle body in order to protect the object to be collided with the vehicle front. is there. One of them is a scooping means that is operated by a hydraulically driven actuator or the like below the front bumper at the front of the vehicle body, and detects the collision of a collision target and operates the scooping means by the actuator ( For example, Patent Document 1).
JP 2001-1848 A

  Since the conventional scooping means is a power-operated type such as a hydraulically operated type, the structure is complicated, and it is necessary to keep the operation reliability of the hydraulic system or the like high.

  Further, in a vehicle having a high hood edge, such as an SUV, it is difficult for the scooping means installed below the front bumper to successfully scoop the collision object onto the hood.

  A problem to be solved by the present invention is that a hydraulically driven actuator or the like is not required, and even in a vehicle having a high hood edge, such as an SUV, the collision object is successfully scooped up on the hood. That is. Further, the problem to be solved by the present invention is to prevent the collision object from getting into the lower part of the bumper in a vehicle having a large vehicle body approach angle such as SUV.

  A vehicle body front structure according to the present invention is a vehicle body front structure having a vehicle body front member at a vehicle body front portion, and the vehicle body front member has an intermediate position in the vertical direction of the vehicle body front member in a horizontal direction. It is attached to a vehicle body component so as to be rotatable around one horizontal axis extending across, and the vehicle body front member inputs a load of a frontal collision to a region above its rotation center axis by the horizontal axis. As a result, the region below the rotation center axis rotates in the direction of jumping up.

  In a vehicle body front structure according to the present invention, as a preferred embodiment, the vehicle body front member includes a grill member disposed between a front bumper face member disposed at the vehicle body front portion and a hood.

  The vehicle body front structure according to the present invention includes, as another preferred embodiment, an upper bumper face member as a front bumper face member at the front of the vehicle body, and a lower bumper face disposed below the upper bumper face member. And the vehicle body front member includes the lower bumper face member.

  Needless to say, the vehicle body front portion structure of the vehicle according to the present invention may include both the grill member and the lower bumper face member.

  According to the vehicle front part structure of the vehicle according to the present invention, the vehicle body front member can be rotated in a butterfly manner around one horizontal axis, and a front collision load is input to a region above the rotation center axis of the vehicle body front member. Then, due to the rotational moment generated in the front member of the vehicle body, the region below the rotation center axis of the vehicle body member rotates in the direction of jumping up. Thus, the collision target can be scooped up on the hood by the butterfly rotating vehicle body front member without requiring a hydraulically driven actuator or the like.

  In particular, the grille member disposed between the front bumper face member disposed at the front of the vehicle body and the hood is a butterfly rotating vehicle body front member, so that the vehicle body front member is disposed at a position higher than the vehicle running surface. Thus, even in a vehicle having a high hood edge such as an SUV, the collision object can be scooped up on the hood.

  Hereinafter, one embodiment in which a vehicle body front structure of a vehicle according to the present invention is applied to an SUV will be described with reference to FIGS.

  As shown in FIG. 1, the SUV of the present embodiment has, as a vehicle body front structure, a left and right front fender 10, a hood 12 disposed between the left and right front fenders 10 and covering the upper part of the engine room, The front bumper face member 14 extends substantially horizontally in the width direction, and the grill member 16 is disposed between the front bumper face member 14 and the hood 10.

  The front bumper face member 14 includes an upper bumper face member 14A and a lower bumper face member 14B disposed below the upper bumper face member 14A.

  The grill member 16 integrally includes an upper grill member (upper region) 16A adjacent to the hood 12 and a lower grill member (lower region) 16B adjacent to the upper bumper face member 14A. That is, the upper grill member 16A and the grill member (lower region) 16B have an integral structure.

  FIG. 2 shows a state in which the upper bumper face member 14A is removed. The grill member 16 is a vehicle body front member, and has a support shaft 20 on the same axis as one horizontal axis A that extends across an intermediate position in the vertical direction in the horizontal direction. The support shaft 20 is provided on each of the left and right sides of the grill member 16 and is a bulkhead upper that defines a vehicle body component, in this embodiment, a front portion of the engine musle, by a bearing member 22 (see FIG. 3) using a C-ring. Attached to the beam 24 is rotatable about its own central axis.

  In this way, the grill member 16 is attached to the bulkhead upper beam beam 24 so as to be rotatable around one horizontal axis A extending along the boundary between the upper bumper face member 14A and the lower bumper face member 14B. When a front collision load is input to the upper region of the rotation axis (support shaft 20) of the horizontal axis A (support shaft 20), that is, the upper bumper face member 14A, the lower region and the lower bumper face member 14B jump up from the rotation center axis. It is structured to rotate in the direction.

  In the normal state, a resistance is given to the support portion of the support shaft 20 by the bearing member 22 or another latch means is provided so that the grill member 16 maintains the normal normal mounting posture as shown in FIG. May be provided.

  Further, when the grill member 16 receives a large load from above, the grill member 16 falls off from the support state by the bulkhead upper beam 24 due to the deformation of the bearing member 22 by the C ring. Thereby, the front-end | tip part of the hood 12 becomes easy to deform | transform for shock absorption.

  As shown in FIGS. 2 and 4, the lower bumper face member 14B includes a substantially yoke-shaped main body member 14Ba constituting a portion excluding the central region in the vehicle width direction and a square plate constituting the central region in the vehicle width direction. The movable member 14Bb is divided into two parts.

  The movable member 14Bb is another vehicle body front member, and has a support shaft 30 on the same axis as one horizontal axis B that extends across an intermediate position in the vertical direction in the horizontal direction. The support shaft 30 is provided on each of the left and right sides of the movable member 14Bb, and is attached to the main body member 14B by a bearing member 32 (see FIG. 5) using a C ring so as to be rotatable around its own central axis.

  When a load of frontal collision is input to the upper region (vehicle body front region) 34A from the rotation center axis (support shaft 30) of the movable member 14Bb by the horizontal axis B, the movable member 14Bb has a region lower than the rotation center axis (vehicle rear region). ) 34B rotates in the direction of jumping up.

  In the normal state, the movable member 14Bb provides resistance to the support portion of the support shaft 30 by the bearing member 32 so that the movable member 14Bb maintains the normal normal mounting posture as shown in FIG. May be provided.

  As shown in FIG. 6, the front end of the hood 12 is deformed at the time of a frontal collision, and the grill member 16 is displaced rearward of the vehicle body, so that the region above the rotation center axis of the grill member 16, that is, the upper grill member. When a front collision load La is input to 16A, a rotational moment in the clockwise direction as seen in FIG.

  As a result, the region below the rotation center axis of the grill member 16, that is, the lower grill member 16 </ b> B rotates in the direction of jumping up. This rotation causes the collision object to be picked up on the hood 12.

  Further, when the front collision load La is input to the region 34B above the rotational center axis of the movable member 14Bb of the lower bumper face member 14B as the lower bumper face member 14B is displaced rearward due to the frontal collision, As a result, a rotational moment is generated in the movable member 14Bb in the clockwise direction as viewed in FIG.

  As a result, the lower region 34B rotates in the direction of jumping up from the rotation center axis of the movable member 14Bb. This rotation also causes the collision object to be scooped up on the hood 12.

  Thus, the collision target can be scooped up on the hood 12 by the butterfly rotating grill member 16 and the movable member 14Bb without requiring a hydraulically driven actuator or the like. In particular, since the grill member 16 disposed between the front bumper face member 14 and the hood 12 is a butterfly rotating body front member, the body front member is disposed at a position higher than the vehicle running surface. Thus, even in a vehicle having a high hood edge such as an SUV, the collision object can be scooped up on the hood 12 successfully.

  Further, by turning the movable member 14Bb of the lower bumper face member 14B, it becomes possible to prevent the collision object from getting caught in the lower bumper even in a vehicle having a large vehicle body approach angle, such as an SUV. .

1 is a perspective view showing an embodiment in which a vehicle body front structure according to the present invention is applied to an SUV. It is a perspective view which shows the principal part of the vehicle body front part structure by this embodiment. It is an expansion perspective view which shows the structure of the grill support part of the vehicle body front part structure by this embodiment. It is a perspective view which shows the lower bumper face part of the vehicle body front part structure by this embodiment. FIG. 6 is an enlarged perspective view showing the structure of the support portion of the movable member of the lower bumper face member of the vehicle body front structure according to the present embodiment. It is explanatory drawing which shows the state at the time of the collision of the vehicle body front part structure by this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Front side fender 12 Hood 14 Front bumper face member 14A Upper bumper face member 14B Lower bumper face member 14Ba Main body member 14Bb Movable member 16 Grill member 16A Upper grill member (upper area)
16B Lower grill member (lower area)
20 Support shaft 22 Bearing member 30 Support shaft 32 Bearing member 34A Upper region (vehicle body front region)
34B Lower side area (rear side area)

Claims (4)

A vehicle body front structure having a front bumper face member, a hood, and a grill member disposed between the front bumper face member and the hood at the front of the vehicle body,
The grill member is attached to the vehicle body component member so as to be rotatable around one horizontal axis extending in the horizontal direction at an intermediate position in the vertical direction,
The vehicle body front structure of a vehicle in which the grill member rotates in a direction in which a lower region jumps up from its own rotation center axis by inputting a frontal collision load to an upper region from its own rotation center axis by the horizontal axis. The vehicle body front structure according to claim 1, wherein the grill member is rotatably attached to a bulkhead upper beam that defines a front portion of the engine mus . In the front part of the vehicle body, as a front bumper face member, an upper bumper face member and a lower bumper face member disposed below the upper bumper face member,
The lower bumper face member is divided into two parts: a main body member and a movable member attached to the vehicle body component member so as to be rotatable about a single horizontal axis extending across an intermediate position in the vertical direction in the horizontal direction. And
2. The vehicle according to claim 1, wherein the movable member rotates in a direction in which a lower region jumps up from its own rotation center axis by inputting a load of a frontal collision to an upper region of its own rotation center axis by the horizontal axis. Car body front structure. The vehicle body front structure according to claim 3, wherein the movable member is rotatably attached to the main body member.

Images