JP2006103572A - Front body structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a front body structure of a vehicle capable of improving rigidity of a vehicle body and reducing the weight. <P>SOLUTION: This structure is provided with a front end cross member 4 extended in the vehicle width direction and having cross section formed into a substantial U-shape, a fender shield panel 7 provided on a rear side of the front end cross member 4 to be extended in the vehicle body longitudinal direction, and a gusset 10 provided to stretch over a vehicle body longitudinal direction rear surface of the front end cross member 4 and a vertical wall 7b of the fender shield panel 7 and having two surfaces forming a substantial L-shape in a corner part formed by the front end cross member 4 and the fender shield panel 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a front body structure of a vehicle, for example, a connection structure with a front end cross member 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 front body structure of a vehicle is disclosed in Patent Document 1, for example.

Japanese Utility Model Publication No. 5-29879

  In the above-described front vehicle body structure of the vehicle, when the front end cross member and the headlamp support panel are coupled, the flange is formed on the front end cross member. The flange portion is a surface formed substantially vertically, and is in contact with the vertical surface of the headlamp support panel and coupled in the longitudinal direction of the vehicle body.

  However, since the front end cross member is a member extending in the vehicle width direction, if the chassis frame is twisted in the vertical direction of the vehicle body and a phase difference occurs between the left and right, it is input to the front end cross member via the body mount. The applied load is applied as a torsional load in the longitudinal direction of the vehicle body. That is, the conventional front end cross member and the head support lamp are coupled in the peeling direction (vehicle body longitudinal direction) with respect to the torsional load input to the front end cross member. As described above, when the coupling portion receives a load in the peeling direction, it is at least disadvantageous in terms of coupling strength. Moreover, if it is going to improve such a problem, since a reinforcement member is required, it will lead to the weight increase of a vehicle body. Therefore, it has been difficult for a conventional vehicle to have a rigid and light vehicle body.

  Accordingly, the present invention solves the above-described problem and provides a front vehicle body structure of a vehicle that can be reconsidered from a method of connecting front end cross members to improve the rigidity of the vehicle body and reduce the weight. With the goal.

A vehicle body structure for a vehicle according to a first invention for solving the above-described problems is
A front end cross member extending in the vehicle width direction and having a substantially U-shaped cross section;
A fender shield panel provided behind the front end cross member and extending in the longitudinal direction of the vehicle body;
A corner portion formed by the front end cross member and the fender shield panel is provided across a rear surface in the vehicle front-rear direction of the front end cross member and a substantially vertical surface of the fender shield panel, and has a substantially L shape. A gusset having two faces to make,
A flange portion formed at both upper and lower end portions of one surface of the gusset and an inner side of a substantially U-shaped cross section of the front end cross member are combined to form a closed cross section, and the other surface of the gusset and the The fender shield panel is connected to the substantially vertical surface.

A vehicle body structure for a vehicle according to a second invention that solves the above problems is as follows.
In the vehicle front body structure according to the first invention,
A headlamp support panel is provided at the rear of both sides in the vehicle width direction of the front end cross member,
A bent portion formed in the longitudinal direction of the vehicle body of the headlamp support panel is overlap-bonded to the other surface of the gusset and the inner surface of the fender shield panel.

A vehicle body structure for a vehicle according to a third aspect of the present invention for solving the above problem is as follows:
In the front body structure of the vehicle according to the second invention,
A body mount bracket is coupled so as to straddle the fender shield panel and the headlamp support panel on the outer side in the vehicle width direction of the gusset, and an elastic member is interposed through a chassis frame that extends the body mount bracket in the longitudinal direction of the vehicle body. It is characterized by combining.

  According to the front body structure of the vehicle according to the first aspect of the present invention, the front end cross member extending in the vehicle width direction and having a substantially U-shaped cross section is provided behind the front end cross member. A rear surface of the front end cross member in the vehicle front-rear direction and a substantially vertical position of the fender shield panel at a corner formed by the fender shield panel extending in the vehicle front-rear direction and the front end cross member and the fender shield panel. A gusset having two substantially L-shaped surfaces, and a flange portion formed at both upper and lower ends of one surface of the gusset, and an approximately joint of the front end cross member. A closed cross-section is formed by joining the inside of the letter-shaped cross-section, and the other surface of the gusset and the substantially vertical of the fender shield panel By connecting the front end cross member and the gusset, the connecting portion between the front end cross member and the gusset, and the connecting portion between the fender shield panel and the gusset can be applied to the torsional load input to the front end cross member. Since the load can be received in the shearing direction and the thickness of each member can be reduced, the rigidity of the vehicle body can be improved and the weight can be reduced.

  According to the vehicle body structure for a vehicle according to the second invention, in the vehicle body structure for the vehicle according to the first invention, a headlamp support panel is provided at the rear of both side portions in the vehicle width direction of the front end cross member, Bonding on the other surface side of the gusset by superimposing the bent portion formed in the longitudinal direction of the vehicle body of the headlamp support panel to the other surface of the gusset and the inner surface of the fender shield panel As a result, 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.

  According to a vehicle body structure for a vehicle according to a third aspect of the invention, in the vehicle body structure for a vehicle according to the second aspect of the invention, the fender shield panel and the headlamp support panel are arranged outside the gusset in the vehicle width direction. The body mount bracket is coupled so as to straddle, and the body mount bracket is coupled to a chassis frame extending in the longitudinal direction of the vehicle body via an elastic member, thereby coupling the front end cross member and the gusset, The connecting portion between the fender shield panel and the gusset can receive the torsional load input from the chassis frame via the body mount in the shear direction, thereby improving the rigidity of the vehicle body. 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 body structure of a vehicle according to an embodiment of the present invention, FIG. 2 is an enlarged view of a portion A in FIG. 1, FIG. 3 is a plan view of FIG. 2, and FIG. It is B arrow sectional drawing. In the drawing, up, down, front, back, left and right indicate 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 a flange portion 4a (see FIG. 3) is formed at the edge. And the opening side of the substantially U-shaped cross section extends so as to face 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 front-rear 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, a corner portion on the inner side in the vehicle width direction formed by joining the rear surface in the vehicle longitudinal direction of the front end cross member 4 and the vertical wall 7 b that is a substantially vertical surface of the fender shield panel 7 is formed. Gusset 10 is provided. The gusset 10 includes a vertical wall 10a having two substantially L-shaped surfaces, and flange portions 10b formed at both upper and lower ends of the vertical wall 10a, and one surface faces the front end cross member 4 side. The other surface is coupled to the fender shield panel 7 side.

  On one surface side of the gusset 10, the flange portion 10b is coupled to the inner side wall of the front end cross member 4 having a substantially U-shaped cross section, and the vertical wall 10a and the front end cross member 3 form a closed cross section. Yes. In the drawing, this coupled portion is indicated as a coupling portion X, and the coupling direction is coupled in the vertical direction of the vehicle body so that the coupling surface is substantially horizontal. On the other hand, the other surface side of the gusset 10 is coupled so that the vertical wall 10a overlaps with the vertical wall 7b of the fender shield panel 7 via the bent portion 5a formed in the front-rear direction of the vehicle body of the headlamp support panel 5. Has been. In the drawing, this coupled portion is indicated as a coupling portion Y, and the coupling direction is coupled in the vehicle width direction so that the coupling surface is substantially vertical.

  Furthermore, a body mount bracket 11 is provided outside the gusset 10 in the vehicle width direction so as to straddle the headlamp support panel 5 and the fender shield panel 7.

  The body mount bracket 11 includes a side part 11a and a bottom part 11b. The side part 11a is provided across the head lamp support panel 5 and the fender shield panel 7 at a corner formed by the coupling of the head lamp support panel 5 and the fender shield panel 7, and both ends thereof are head lamp support panels. 5 and the fender shield panel 7. On the other hand, the bottom part 11b is coupled to the headlamp support panel 5, the fender shield panel 7 and the side part 11a at the corners.

  The lower part of the bottom part 11b is supported by the body mount 9 described above. That is, the load input from the chassis frame 3 through the body mount 9 is first transmitted to the body mount bracket 11.

  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 the body mount bracket 11 through the body mount 9, and further transmitted to members such as the front end cross member 4, the headlamp support panel 5 and the fender shield panel 7. The At this time, since the front end cross member 4 is provided orthogonal to the chassis frame 3, ie, extending in the vehicle width direction, when a load is transmitted from the body mount bracket 11, it is shown in FIG. Thus, the torsional load Mx in the longitudinal direction of the vehicle body is input.

  Similarly, the load input to the chassis frame 3 is also transmitted to the fender shield panel 7 via the body mount 9. At this time, since the fender shield panel 7 is provided parallel to the chassis frame 3, that is, extending in the longitudinal direction of the vehicle body, when a load is transmitted from the body mount bracket 11, as shown in FIG. The torsional load My in the vehicle width direction is input.

  In the configuration of this embodiment, a gusset 10 is provided for connecting the front end cross member 4 and the fender shield panel 7, and the flange portion 10 b is connected to the inner side wall of the front end cross member 4 on the substantially U-shaped side cross section. ing. That is, since the coupling portion X is coupled in the vertical direction of the vehicle body so that the coupling surface is substantially horizontal, the torsional load Mx input to the front end cross member 4 can be received in the shearing direction. Can be prevented from peeling or breaking. In addition, since the vertical wall 10a of the gusset 10 and the front end cross member 3 are joined by forming a closed cross section, the rigidity is improved and the torsional load Mx can be sufficiently resisted.

  Furthermore, on the other surface of the gusset 10, the vertical wall 10a and the vertical wall 7b of the fender shield panel 7 are coupled. That is, since the coupling portion Y is coupled in the vehicle width direction so that the coupling surface is substantially vertical, the torsional load My input to the fender shield panel 7 can be received in the shearing direction. Peeling and destruction can be prevented.

  In this way, by providing the coupling portion X coupled to the torsional load Mx in the shearing direction and the coupling unit Y coupled to the torsional load My in the shearing direction, rather than receiving the torsional load in the conventional peeling direction. Can handle large loads. Thereby, when the same coupling strength and rigidity as before are required, the thickness of the front end cross member 4, the headlamp support panel 5 and the fender shield panel 7 can be made thinner than before, so that the weight of the vehicle body 1 can be reduced. Can be achieved.

  Therefore, according to the front body structure of the vehicle according to the present invention, the front end cross member 4 extending in the vehicle width direction and having a substantially U-shaped cross section, and the rear end of the front end cross member 4 The fender shield panel 7 extending in the longitudinal direction of the vehicle body, the rear end surface of the front end cross member 4 in the longitudinal direction of the vehicle body and the fender shield panel 7 at the corner formed by the front end cross member 4 and the fender shield panel 7. And a gusset 10 having two substantially L-shaped surfaces provided across the vertical wall 7b of the gusset 10, and flange portions 10b and front end cross members formed at upper and lower ends of one surface of the gusset 10. 4 is joined to the inner side wall of the substantially U-shaped cross section to form a closed cross section, and the other face of the gusset 10 and the fender shield panel By coupling 7 and vertical wall 7b of the coupling portion X for receiving a load in the shear direction, it may comprise a Y, since the bonding strength is improved, thereby improving the rigidity of the body 1. Further, since the thickness of the front end cross member 4, the headlamp support panel 5 and the fender shield panel 7 can be made thinner than before, the weight of the vehicle body 1 can be reduced by the amount that the rigidity of the vehicle body 1 is improved. be able to.

  The front end cross member 4 includes a headlamp support panel 5 extending in the vehicle width direction behind both sides in the vehicle width direction, and the bent portions 5a formed in the vehicle body front-rear direction of the headlamp support panel 5 are gusseted. By combining the ten vertical walls 10a and the vertical wall 7b of the fender shield panel 7 so as to overlap each other, the coupling on the other surface side of the gusset 10 is strengthened, so that the rigidity of the vehicle body 1 can be improved. . Since the thickness of the front end cross member 4, the headlamp support panel 5 and the fender shield panel 7 can be made thinner than before, the weight of the vehicle body 1 can be reduced by the amount that the rigidity of the vehicle body 1 is improved. be able to.

  Further, a body mount bracket 10 is coupled so as to straddle the headlamp support panel 5 and the fender shield panel 7 outside the gusset 10 in the vehicle width direction, and the body mount bracket 10 extends in the longitudinal direction of the vehicle body via the body mount 9. By coupling to the chassis frame 3 to be installed, even if torsional loads Mx and My are input from the chassis frame 3 to the front end cross member 4 and the fender shield panel 7 through the body mount 9, the coupling receives the load in the shear direction. Since the portions X and Y are provided, it is possible to prevent the coupling portions X and Y from being peeled off or broken. Since the coupling between the coupling portions X and Y is strengthened, the rigidity of the vehicle body 1 is improved, and the front end cross member 4, the headlamp support panel 5 and the fender are increased as compared with the conventional structure by the amount that the rigidity of the vehicle body 1 is improved. Since the thickness of the shield panel 7 can be reduced, the weight of the vehicle body 1 can be reduced.

  The present invention can be applied to a coupling 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 an enlarged view of the A section of FIG. FIG. 3 is a plan view of FIG. 2. It is a BB arrow sectional view of Drawing 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car body 2 Body 3 Chassis frame 4 Front end cross member 4a Flange part 5 Headlamp support panel 5a Bending part 6 Front end upper bar 7 Fender shield panel 7a Front end surface 7b Vertical wall 8 Mount bracket 9 Body mount 10 Gusset 10a Vertical wall 10b Flange part 11 Body mount bracket 11a Side part 11b Bottom part

Claims (3)

A front end cross member extending in the vehicle width direction and having a substantially U-shaped cross section;
A fender shield panel provided behind the front end cross member and extending in the longitudinal direction of the vehicle body;
A corner portion formed by the front end cross member and the fender shield panel is provided across a rear surface in the vehicle front-rear direction of the front end cross member and a substantially vertical surface of the fender shield panel, and has a substantially L shape. A gusset having two faces to make,
A flange portion formed at both upper and lower ends of one surface of the gusset and a substantially U-shaped cross section of the front end cross member are joined to form a closed cross section, and the other surface of the gusset and the fender A front body structure of a vehicle, wherein the substantially vertical surface of the shield panel is coupled. In the vehicle front body structure according to claim 1,
A headlamp support panel is provided at the rear of both sides in the vehicle width direction of the front end cross member,
A front vehicle body structure for a vehicle, wherein a bent portion formed in a longitudinal direction of the vehicle body of the headlamp support panel is overlap-bonded to the other surface of the gusset and the inner surface of the fender shield panel. In the vehicle front body structure according to claim 2,
A body mount bracket is coupled so as to straddle the fender shield panel and the headlamp support panel on the outer side in the vehicle width direction of the gusset, and an elastic member is interposed through a chassis frame that extends the body mount bracket in the longitudinal direction of the vehicle body. A front body structure of a vehicle characterized by being coupled.

Images