JP5268677B2 - Body structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body structure for restraining deflection of a grille, and absorbing shock applied to the grille. <P>SOLUTION: The vehicle body structure 11 has a front grille 111 in which an oblong opening is formed, and a grille bracket 112 that is disposed at a back face of the front grille 111 and in which a vertical stay 126 extending in a vertical direction (direction of arrow b1) is provided at a support stay 125 supported to a vehicle body 18 side. The vertical stays 126 are jointed by a joint stay 127 jointing the left and right. The support stay 125 comprises a buckling stay part 131 jointed to a front bulk head 16 to extend, and a horizontal stay part 132 continuing to the bent stay part 131 and jointed to the vertical stay 126. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a vehicle body structure in which a front grill is arranged in front of a vehicle.

  The vehicle is provided with a net-like grill for taking in air as generally seen on the front surface, and is deformed when it comes into contact with the pedestrian, thereby reducing the load on the pedestrian (for example, (See Patent Document 1 (FIG. 10), Patent Document 2 (FIG. 2)).

However, in the prior art (Patent Documents 1 and 2), when a pedestrian comes in contact with the center of the grill and an impact is input to the center, only the center is bent toward the rear of the vehicle, and the load is transmitted to the vehicle body side (for example, a radiator). There is a problem that the grill is not performed early and a problem that the shock absorption amount of the grill itself is small.
In particular, when the vehicle height is high, the position of the grille is also high, and the impact is often directly applied to the center of the grill, the amount of deflection at the center with a large vent opening area and low strength increases, and the impact at the grille increases. There is a problem that the amount of absorption is reduced.

JP 2003-81034 A JP 2007-283990 A

  An object of the present invention is to provide a vehicle body structure that suppresses bending of a grill and absorbs an impact applied to the grill.

In order to solve the above-described problems, the invention according to claim 1 is arranged on the rear surface of the grill in a vehicle body structure including a grill which is a frame body in which at least two horizontally long openings are formed on the outer surface of the vehicle. And a support bracket supported on the vehicle body side is provided with a grill bracket provided with a vertical stay extending in the vertical direction. The support stay is connected to a front bulkhead included on the vehicle body side and extends to the vicinity of the grille. It is characterized by comprising a stay part and a lateral stay part connected to a vertical stay in the vicinity of the grill of the buckling stay part .

  The invention according to claim 2 is characterized in that the vertical stay is a pair of left and right, and the strength of the grill is changed by setting the distance between the left and right.

  The invention according to claim 3 is characterized in that the vertical stay is connected by a connecting stay that connects the left and right.

In the invention according to claim 4 , when the bumper face is provided below the grill in the grill bracket, the connecting stay is provided at the upper part of the grill on the back surface, and the lower end of the vertical stay supports the bumper face. And

In the invention according to claim 1, in the vehicle body structure including the grill that is a frame body that forms an opening on the outer surface of the vehicle, the support stay that is disposed on the rear surface of the grill and is supported on the vehicle body side in the vertical direction. A grille bracket is provided with a vertical stay extending to the front , and a support stay is connected to a front bulkhead included on the vehicle body side and extends to the vicinity of the grill, and a vertical stay is connected to the buckling stay near the grill. Since it is composed of a horizontal stay connected to the stay, first, the grille is bent by the vertical stay of the grill bracket against the impact input to the grill from the outside of the vehicle, thereby increasing the strength of the grill. It is possible to improve, and the deflection of the grill can be suppressed.
The support stay has a buckling stay portion which extends to the vicinity grill connected to the front bulkhead contained in the vehicle body side, since it is configured with a horizontal stay part which is connected to the longitudinal stay continuous to buckling stay portion, buckling The impact can be absorbed by buckling of the stay portion, that is, the impact can be absorbed by the grill bracket itself.

  In the invention according to claim 2, since the vertical stay is a pair of left and right and sets the distance between the left and right, the strength of the grill is changed. Therefore, a hard and strong member disposed behind the grill, for example, a vehicle body The amount of flexure of the grill (the amount of buckling) can be adjusted so that it does not contact the front bulkhead or radiator included in the skeleton of the front end.

  In the invention according to claim 3, since the vertical stay is connected by the connecting stay that connects the left and right, the strength against the force in the vehicle width direction can be improved and the efficiency of shock absorption can be increased.

In the invention according to claim 4 , when the bumper face is provided below the grille in the grill bracket, the connecting stay is provided at the upper part of the grille on the rear surface, so that the collision reaction force between the bumper face and the grill by the connecting stay is reduced. The collision stroke amount can be increased.
Furthermore, since the lower end of the vertical stay supports the bumper face, the support member that supported the upper surface of the conventional bumper face and retained the shape of the bumper face can be eliminated, reducing the collision reaction force and the collision stroke The amount can be increased.

1 is a perspective view of a vehicle body structure according to Embodiment 1 of the present invention. 1 is a cross-sectional view of a vehicle body structure related to Example 1. FIG. It is a perspective view of the grill bracket of a vehicle body structure. It is a top view of the grill bracket of a vehicle body structure. It is a rear view of the grill bracket of a vehicle body structure. It is a figure (1/3) explaining the mechanism which suppresses bending of the grill of the body structure concerning Example 1. FIG. FIG. 3B is a diagram (2/3) illustrating a mechanism for suppressing the bending of the grill of the vehicle body structure according to the first embodiment. It is a figure explaining the mechanism which suppresses bending of the grill of the body structure concerning Example 2. FIG.

  Hereinafter, embodiments of the present invention will be described in detail in Example 1 and Example 2. When a plurality of drawings are designated, the range of the drawings (from figure to figure) is indicated by "-". For example, in the case of FIG. 1, FIG. 2, and FIG.

  The vehicle body structure 11 according to the first embodiment shown in FIGS. 1 and 2 is employed at the front portion of the vehicle 12 to protect the pedestrian and contact the front grill 111 of the vehicle 12 when contacting an obstacle such as a pedestrian. The grille bracket 112 is provided on the back of the front grille 111. This will be specifically described below.

The vehicle 12 includes an engine room 22 connected in front of the passenger compartment 21, a bumper beam 24 attached to the front body 14, a bumper face 114 supported by the bumper beam 24, and a front bulkhead 16 attached to the front body 14. A front lower cross member 27 disposed below the front bulkhead 16, a hood lock device 31, a radiator 32 and a condenser 33 supported at the front end of the engine room 22, and a radiator 32 and a condenser on the front bulkhead 16. 33, a support bracket 44 that supports the upper end of 33, and a grill bracket 112 disposed between the front grill 111 and the front bulkhead 16.
The front grill 111 includes an upper grill 116 and a lower grill 117.

  The front bulkhead 16 (FIG. 3) includes a bulkhead corner portion 52 that is continuous with the vehicle body 18 side, a bulkhead side portion 53 that is continuous with the front end portion 51 of the bulkhead corner portion 52 and extends upward, and a bulkhead side portion. And a bulkhead upper portion 55 attached to a retreating portion 54 that extends the upper end of 53 toward the rear of the vehicle 12.

  Specifically, the front bulkhead 16 is formed in a plate shape so that the bulkhead corner portion 52 is formed in a rectangular tubular hollow (closed cross section) and the end (tip portion 51) of the bulkhead corner portion 52 is sealed. The lower portion of the bulkhead side portion 53 is attached, and one end of the bulkhead side frame 38 is joined to the lower surface of the bulkhead corner portion 52.

  The vehicle body structure 11 (FIGS. 1-5) includes a front grill 111 which is a frame body in which at least two horizontally long openings 122 are formed on the outer surface 121 of the vehicle 12, and is disposed on the back surface 124 of the front grill 111, and The support stay 125 supported on the vehicle body 18 side is provided with a grill bracket 112 provided with a vertical stay 126 extending in the vertical direction (the direction of the arrow b1).

  The vertical stay 126 is a pair of left and right, and changes the strength of the front grill 111 by setting the distance Ws between the left and right. That is, when the distance Ws between the left and right is increased, the amount of deformation until the front grill 111 comes into contact with the radiator 32 and the condenser 33 increases, and as a result, the strength of the front grill 111 decreases.

The vertical stay 126 is connected by a connecting stay 127 that connects the left and right.
The support stay 125 is connected to the front bulkhead 16 included on the vehicle body 18 side and extends to the vicinity of the front grill 111, and the support stay 125 is connected to the vertical stay 126 in the vicinity of the front grill 111 of the buckling stay 131. And a horizontal stay 132.

  When the bumper face 114 is provided below the front grille 111, the grill bracket 112 is provided with a connecting stay 127 at the upper part 134 of the front grille 111 in the back surface 124 and at the front extension at the lower end of the vertical stay 126. The part 148 supports the bumper face 114.

The grill bracket 112 is substantially symmetrical on the left and right with respect to the center line C (FIG. 4). The left side of the grill bracket 112 in FIG. 5 will be described in detail.
In the grill bracket 112, one end (fixed end) of the upper stay 136 of the buckling stay portion 131 is fixed to the upper portion of the bulkhead side portion 53 where the front bulkhead 16 is erected, and the upper stay 136 of the buckling stay portion 131 is fixed. The other lateral end (front end) of 136 is close to the back of the front grille 111, and the upper lateral stay 141 of the lateral stay part 132 extends toward the vicinity of the central part 137 of the front grille 111 continuously to the other end (front end). The upper horizontal stay 141 extends along the front grille 111 to a position about half the distance to the symmetrical reference position (center line C) (distance W1) to form an inner end 142, and the vertical stay 126 is located on the inner end 142. The connecting stay 127 connects the left inner end 142 and the right inner end 142 to each other.

  One end (fixed end) of the lower stay 144 of the buckling stay portion 131 is fixed to the lower part of the bulkhead side portion 53, and the other end (tip) of the lower stay 144 of the buckling stay portion 131 is the back of the front grille 111. , The lower horizontal stay 145 extends toward the vicinity of the central portion 137 of the front grill 111 and is connected to the other end (tip), and the lower horizontal stay 145 is symmetrical with respect to the front grill 111. An inner end 146 is formed extending to about half the distance to the position (center line C), and a vertical stay 126 hanging from the inner end 146 fixes the lower part.

The vertical stay 126 (FIGS. 3 and 5) is formed with a rear extending portion 147 that is connected to the upper edge and extends rearward of the vehicle 12, and the front end of the rear extending portion 147 faces downward below the upper grille 116. A lower end (front extending portion 148) is formed which is fixed to the lower surface of the lower end and extends forward of the vehicle 12 along the lower edge. It is fixed to the face upper surface portion 114a (FIG. 2).
Note that the space between the rear extension 147 and the front extension 148 of the vertical stay 126 is not fixed to the upper grille 116 and the lower grille 117, but this interval is connected to the upper grille 116 and the lower grille 117 as necessary. Fix it.

Next, the operation of the vehicle body structure 11 according to the first embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 6 and 7, the vehicle body structure 11 according to the first embodiment is configured such that when the vehicle 12 and an obstacle (for example, a pedestrian) contact each other as indicated by an arrow b <b> 2, the grill bracket 112 is deformed and the front grill 111 is moved. By holding as indicated by the arrow b3, bending of the front grill 111 is suppressed.

  Specifically, when the center of the front surface of the vehicle 12 contacts (collises) an obstacle (for example, a pedestrian), the front grill 111 (upper grill 116, lower grill 117) is deformed rearward of the vehicle 12 and the grill bracket 112 Press. The grill bracket 112 supports the front grill 111, which is undergoing deformation, with vertical stays 126 that are separated from the center of the front grill 111 to the left and right by a distance W1, respectively, and thus absorbs shock while deforming the center of the front grill 111. Can be secured, and the bending of the front grille 111 can be suppressed.

Since the vertical stay 126 changes the strength of reinforcing the front grille 111 by setting the distance Ws between the left and right as shown in FIG. 7, when the distance between the left and right is set to Ws, the vehicle When the center of the front surface of 12 contacts (collises) an obstacle (for example, a pedestrian), the amount of deflection (the amount of buckling) of the front grill 111 can be suppressed to E.
In other words, there is an advantage that the front grill 111 does not contact the front bulkhead 16 and the radiator 32 located behind.

  When the center of the front surface of the vehicle 12 contacts (collises) an obstacle (for example, a pedestrian), the vertical stay 126 transmits and distributes the load to the connecting stay 127 connected in FIG. The strength against the force in the direction of arrow b4) can be improved to increase the efficiency of shock absorption.

  In the support stay 125, when the center of the front surface of the vehicle 12 contacts (collises) an obstacle (for example, a pedestrian), a compressive load is applied to the buckling stay portion 131 as indicated by an arrow b5, and the buckling stay portion 131 buckles. Therefore, the impact can be absorbed by the buckling of the buckling stay 131.

  Next, the vehicle body structure 11B according to the second embodiment shown in FIGS. 8A and 8B will be described. (A) is a rear view corresponding to FIG. 5, (b) is a figure explaining the mechanism which suppresses the bending of the grill corresponding to FIG. 7 more. The same components as those in the first embodiment shown in FIGS.

  The vehicle body structure 11B according to the second embodiment includes a grill bracket 112B (including a support stay 125B), and the grill bracket 112B has a left-right distance of the vertical stay 126 of Wb. The distance Wb between the left and right is smaller than the distance Ws between the left and right of the vehicle body structure 11 of the first embodiment shown in FIG.

  As shown in (b), in the grill bracket 112B, since the vertical stay 126 is the distance Wb between the left and right (Wb <Ws), the center of the front of the vehicle 12 contacts an obstacle (for example, a pedestrian) under an example condition ( When a collision occurs, the amount of bending (backing amount) of the front grill 111 can be suppressed to Eb (Eb <E). Therefore, the amount of bending of the front grill 111 can be further suppressed.

  In addition, although the vehicle body structure of the present invention is adopted in the front part of the vehicle in the embodiment, it can be adopted in other than the rear part and the vehicle.

  The vehicle body structure of the present invention is suitable for the front part of a vehicle.

  DESCRIPTION OF SYMBOLS 11 ... Vehicle structure, 12 ... Vehicle, 16 ... Front bulkhead, 18 ... Vehicle body, 111 ... Front grille, 114 ... Bumper face, 121 ... Outer surface of vehicle, 122 ... Opening, 124 ... Back, 125 ... Support stay, 126 ... Longitudinal stay, 127 ... connecting stay, 131 ... buckling stay part, 132 ... horizontal stay part, 134 ... upper part of front grille, Ws ... distance between left and right.

Claims (4)

In a vehicle body structure provided with a grill which is a frame that forms at least two horizontally long openings on the outer surface of a vehicle,
A grill bracket provided on a rear surface of the grill and provided with a vertical stay extending in a vertical direction on a support stay supported on the vehicle body ;
The support stay is
A buckling stay portion connected to a front bulkhead included on the vehicle body side and extending to the vicinity of the grill;
A lateral stay connected to the vertical stay in the vicinity of the grille of the buckling stay;
Vehicle body structure characterized in that it consists of.   The vehicle body structure according to claim 1, wherein the vertical stay is a pair of left and right, and the strength of the grill is changed by setting a distance between the left and right.   The vehicle body structure according to claim 1, wherein the vertical stay is connected by a connecting stay that connects left and right. The grill bracket is characterized in that when a bumper face is provided below the grill, the connecting stay is provided on an upper portion of the grill on the back surface, and a lower end of the vertical stay supports the bumper face. The vehicle body structure according to any one of claims 1 to 3 .

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