JP4100390B2 - Front body structure of the vehicle - Google Patents

Description

  The present invention relates to a front body structure of a vehicle, for example, a front end reinforcement structure of a chassis frame vehicle.

  A conventional vehicle body structure includes a chassis frame and a body (cabin) supported by the chassis frame via a plurality of body mounts (rubbers). The front part of the body is a headlamp support panel (shroud panel) that extends in the vehicle width direction, a fender shield panel (wheel apron) that extends to the rear of the vehicle body at the rear of both sides of the headlamp support panel, and a headlamp support panel And a front end cross member (cross member) extending in the vehicle width direction at the front portion.

  Such a conventional front vehicle body structure of a vehicle is disclosed in Patent Document 1, for example.

JP 2002-187574 A

  However, in the above-described conventional front vehicle body structure, no countermeasure has been taken for the load input to the body side from the chassis frame through the body mount due to the vibration of the vehicle. In particular, the joint between the headlamp support panel extending in the vehicle width direction and the fender shield panel extending in the longitudinal direction of the vehicle body is easily affected by such a load.

  Further, in order to improve such a problem, it is necessary to increase the thickness of the headlamp support panel or to connect an L-shaped reinforcing member to the corner of the connecting portion. However, an increase in the thickness of the headlamp support panel, which is a large member, leads to an increase in the weight of the vehicle body, and it may not be possible to receive a sufficient load simply by connecting an L-shaped reinforcing member. Therefore, it has been difficult to make a light vehicle body having rigidity with a conventional vehicle.

  Therefore, the present invention solves the above-mentioned problem, and by connecting a box-shaped member to the connecting portion, the rigidity of the vehicle body can be improved and the vehicle body structure can be reduced in weight. The purpose is to provide.

A vehicle body structure for a vehicle according to a first invention for solving the above-described problems is
Headlamp support panels provided on both sides in the vehicle width direction at the front end of the vehicle body;
A fender shield panel having a front end coupled to the headlamp support panel and extending in the longitudinal direction of the vehicle body,
A front end upper bar provided at an upper edge of the headlamp support panel and extending in a vehicle width direction;
A closed cross section straddling the headlamp support panel and the fender shield panel at a corner portion on the outer side in the vehicle width direction of a joint portion between the rear upper portion in the vehicle longitudinal direction of the headlamp support panel and the front end upper portion of the fender shield panel With braces joined to form a
The brace is
A vertical wall portion formed such that a horizontal cross-section has a substantially L-shape and a lower end thereof is inclined forward of the vehicle body;
An upper flange portion that is formed substantially horizontally on the upper edge of the vertical wall portion and is coupled to the front end upper bar in the vehicle body vertical direction;
A lower flange portion formed at a lower edge of the vertical wall portion and formed in a substantially L shape so as to match the corner portion and coupled to the headlamp support panel and the fender shield panel;
Two side flanges which are formed on both side edges of the vertical wall portion continuously to the upper flange portion and the lower flange portion, respectively, one of which is coupled to the headlamp support panel and the other is coupled to the fender shield panel characterized in that constituted by the section.

According to the vehicle front body structure of the vehicle according to the first aspect of the present invention, the headlamp support panels provided on both sides in the vehicle width direction at the front end of the vehicle body, the front ends are coupled to the headlamp support panels, and the vehicle longitudinal direction A fender shield panel extending to the front end, a front end upper bar provided on an upper edge of the headlamp support panel, extending in the vehicle width direction, a rear upper portion of the headlamp support panel in the vehicle longitudinal direction, and the fender shield panel A brace coupled to form a closed cross section across the headlamp support panel and the fender shield panel at a corner on the vehicle width direction outer side of the coupling portion with the front end upper portion of the brace, A vertical wall portion formed such that the horizontal cross-section is substantially L-shaped and the lower end thereof is inclined forward of the vehicle body; An upper flange portion that is formed substantially horizontally on the upper edge of the vertical wall portion and is coupled to the front end upper bar in the vertical direction of the vehicle body, and is formed on the lower edge of the vertical wall portion so as to match the corner portion. A lower flange portion that is substantially L-shaped and joined to the headlamp support panel and the fender shield panel, and the upper flange portion and the lower flange portion are connected to both side edges of the vertical wall portion respectively. Formed, one side is coupled to the headlamp support panel, and the other is composed of two side flanges coupled to the fender shield panel, thereby improving the coupling strength of the coupling portion. The rigidity of the vehicle body can be improved. Further, since the plate thickness of each member can be reduced by the amount that the rigidity of the vehicle body is improved, the vehicle body can be reduced in weight.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a perspective view of a front vehicle body structure of a vehicle according to an embodiment of the present invention, FIG. 2 is a perspective view from the rear of the vehicle body at A part in FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB in FIG. 4 is a cross-sectional view taken along the line CC of FIG. The up, down, front, back, left and right in the figure indicate the up, down, front, back, left and right of the vehicle body.

  FIG. 1 shows a front portion of a vehicle body 1. A body 2 is provided at an upper portion, and a chassis frame 3 for supporting the body 2 is provided at a lower portion.

  The body 2 includes a front end cross member 4, a headlamp support panel 5, a front end upper bar 6, a fender shield panel 7, and the like.

The front end cross member 4 is formed to have a substantially U-shaped cross section (groove shape), and is extended so that the opening side of the substantially U-shaped cross section faces the rear of the vehicle body. The headlamp support panel 5 extends in the vehicle width direction and is coupled to the rear surfaces of the both ends of the front end cross member 4, and the upper portions of the left and right headlamp support panels are coupled to each other with a front end upper bar 6 as a reinforcing member. ing. The fender shield panel 7 extends in the longitudinal direction of the vehicle body behind the front end cross member 4 and its front end surface 7a (see FIG. 3) is overlapped and joined to the front end cross member 4 and the headlamp support panel 5. Yes.

  On the other hand, the chassis frame 3 extends in the front-rear direction of the vehicle body, and mount brackets 8 (one on each side in FIG. 1) are provided on the left and right sides thereof. A body mount 9, which is an elastic member that supports the body 2, is provided on the mount bracket 8. The body 2 is provided on the body mount 9. That is, the chassis frame 3 supports the body 2 via the body mount 9.

  As shown in FIGS. 2 to 4, the headlamp support panel 5 and the fender shield panel 7 are coupled at the upper part of the rear surface of the headlamp support panel 5 in the vehicle longitudinal direction and the upper part of the front end surface 7 a of the fender shield panel 7. . And the brace 10 is couple | bonded so that a closed cross section may be formed ranging over the headlamp support panel 5 and the fender shield panel 7 in the vehicle width direction outer side of this coupling | bond part.

The brace 10 extends in the vertical direction of the vehicle body and includes a vertical wall portion 10a and flange portions 10b, 10c, 10d, and 10e. The vertical cross section of the vertical wall portion 10a is formed in a substantially L shape, and its lower end is formed so as to incline forward of the vehicle body as shown in FIG. 4, and the flange portions 10b to 10e are formed in the vertical wall. It is formed integrally with the edge of the portion 10a. The flange portion 10b is formed substantially horizontally on the upper portion of the vertical wall portion 10a, and is coupled to the front end upper bar 6 in the vertical direction of the vehicle body. The flange portion 10c is formed substantially perpendicular to the side portion of the vertical wall portion 10a, and is coupled to the fender shield panel 7 in the vehicle width direction. The flange portion 10d is formed at the lower end portion of the vertical wall portion 10a, and matches the corner portion at the corner portion on the outer side in the vehicle width direction of the joint portion between the headlamp support panel 5 and the fender shield panel 7. They are combined in a substantially L shape. That is, the flange portion 10d is coupled to the headlamp support panel 5 in the vehicle body front-rear direction and is coupled to the fender shield panel 7 in the vehicle width direction. The flange portion 10e is formed on a side portion of the vertical wall portion 10a, and is coupled to the headlamp support panel 5 in the longitudinal direction of the vehicle body.

  That is, by connecting the flange portion 10c to the fender shield panel 7 and connecting the flange portion 10e to the headlamp support panel 5, a closed cross section is formed in the vehicle longitudinal direction or the vehicle width direction. Further, the flange portion 10b is coupled to the front end upper bar 6, and the flange portion 10d is coupled so as to match the corner portions of the headlamp support panel 5 and the fender shield panel 7, thereby closing the cross section in the vertical direction of the vehicle body. Is formed. Therefore, the joint strength of the joint portion between the headlamp support panel 5 and the fender shield panel 7 is increased, and the rigidity is improved.

  Here, when the vehicle travels on a curved road, a rough road, or the like, a vehicle body vertical or horizontal load is input to the chassis frame 3 from wheels (not shown). The load input to the chassis frame 3 is transmitted to members such as the front end cross member 4, the headlamp support panel 5, and the fender shield panel 7 through the body mount 9.

  In the configuration of the present embodiment, a closed cross section is formed across the headlamp support panel 5 and the fender shield panel 7 on the outer side in the vehicle width direction of the joint portion between the headlamp support panel 5 and the fender support panel 7, and By having the vertical wall portion 10a and the flange portions 10b to 10e, and providing the brace 10 connected to the headlamp support panel 5, the front end upper bar 6 and the fender shield panel 7 by the flange portions 10b to 10e, Since the strength of the portion is improved and the rigidity is improved, even if a load is input to the headlamp support panel 5, the load can be received efficiently.

  As described above, by providing the brace 10, the rigidity of the vehicle body 1 is improved, and since the brace 10 is a small light reinforcing member, the weight of the vehicle body 1 is not increased. In addition, since the rigidity is improved, the thickness of the headlamp support panel 5 can be made thinner than before when the same coupling strength and rigidity as before are required, so that the weight of the vehicle body 1 can be reduced. it can.

  Therefore, according to the front body structure of the vehicle according to the present invention, the headlamp support panel 5 provided on both sides in the vehicle width direction of the front end of the vehicle body 1 and the front end face 7a are coupled to the headlamp support panel 5. In addition, a fender shield panel 7 extending in the longitudinal direction of the vehicle body, a front end upper bar 6 provided on the upper edge of the headlamp support panel 5 and extending in the vehicle width direction, and the longitudinal direction of the vehicle body of the headlamp support panel 5 The head lamp support panel 5 and the fender shield panel 7 are joined so as to form a closed cross section at the joint portion on the outer side in the vehicle width direction of the joint portion between the rear upper portion and the upper portion of the front end surface 7a of the fender shield panel 7. By providing the brace 10, the coupling strength of the coupling portion is increased, so that the rigidity of the vehicle body 1 can be improved. And since the plate | board thickness of the headlamp support panel 5 can be made thin by the part which the rigidity of the vehicle body 1 improved, the weight reduction of the vehicle body 1 can be achieved.

  The brace 10 extends in the vertical direction of the vehicle body, and connects the flange portion 10b to the front end upper bar 6 and connects the flange portion d so as to straddle the headlamp support panel 5 and the fender shield panel 7. Since the closed cross section can be formed also in the vertical direction of the vehicle body, the rigidity is further improved. And since the plate | board thickness of the headlamp support panel 5 can be made thin by the part which the rigidity of the vehicle body 1 improved, the weight reduction of the vehicle body 1 can be achieved.

  The present invention can be applied to a reinforcing structure in a vehicle body structure.

1 is a perspective view of a front body structure of a vehicle according to an embodiment of the present invention. It is a perspective view from the vehicle body rear in the A section of FIG. It is a BB arrow sectional view of Drawing 2. It is CC sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car body 2 Body 3 Chassis frame 4 Front end cross member 5 Head lamp support panel 6 Front end upper bar 7 Fender shield panel 7a Front end surface 8 Mount bracket 9 Body mount 10 Brace 10a Vertical wall part 10b-c Flange part

Claims (1)

A headlamp support panel provided on both sides in the vehicle width direction of the front end of the vehicle body;
A front end coupled to the headlamp support panel, and a fender shield panel extending in the longitudinal direction of the vehicle body;
A front end upper bar provided on an upper edge of the headlamp support panel and extending in a vehicle width direction;
A closed cross section straddling the headlamp support panel and the fender shield panel at a corner portion on the outer side in the vehicle width direction of a joint portion between the rear upper portion in the vehicle longitudinal direction of the headlamp support panel and the front end upper portion of the fender shield panel With braces joined to form
The brace is
A vertical wall portion formed such that a horizontal cross-section is substantially L-shaped and a lower end thereof is inclined forward of the vehicle body;
An upper flange portion that is formed substantially horizontally on the upper edge of the vertical wall portion and is coupled to the front end upper bar in the vehicle body vertical direction;
A lower flange portion formed at a lower edge of the vertical wall portion and formed in a substantially L shape so as to match the corner portion and coupled to the headlamp support panel and the fender shield panel;
Two side flanges which are formed on both side edges of the vertical wall portion continuously to the upper flange portion and the lower flange portion, respectively, one of which is coupled to the headlamp support panel and the other is coupled to the fender shield panel front body structure of a vehicle, characterized in that constituted by the section.

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