JP2009056927A - Vehicle body structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To also make rigidity in an outward direction crossing to a vertical wall surface sufficient without adding a part such as a vibration-proof material while ensuring rigidity relative to input in a vertical direction from a suspension member. <P>SOLUTION: A shock absorber mounting part 29 for mounting an upper end part of a shock absorber 27 is provided on an upper part of a wheel house inner 1. An embossed part 37 swelled to an outer side in a vehicle width direction is provided on a vertical wall surface 21 of the wheel house inner 1, and two bead parts 39, 41 extending in the Japanese letter ha-like shape in a vertical direction so as to cross the embossed part 37 are provided respectively. The respective bead parts 39, 41 are extended from near the shock absorber mounting part 29 toward a neighborhood to a vehicle body skeleton member (cross member 13 and rear panel 15) respectively. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle body structure including a suspension member mounting portion on an upper portion of a wheel house inner.

As a wheel house inner provided with the attachment part of a suspension member, there exists a thing of the following patent document 1, for example.
Japanese Utility Model Publication No. 5-24484

  By the way, in the above-described conventional wheel house inner, since the vertical direction input from the suspension member is received in the plane of the vertical wall surface, the vertical wall surface has a flat plate shape, but the rigidity to the vertical direction input is secured to some extent. The rigidity in the out-of-plane direction, which is the direction intersecting the vertical wall surface, is not sufficient, and as a result, there is a problem that road noise during vehicle traveling increases.

  As a countermeasure against this, it is conceivable to provide a damping material or a reinforcing material on the vertical wall surface. In this case, however, there is a problem that the weight and the number of parts increase, leading to an increase in manufacturing cost.

  Therefore, the present invention is to ensure sufficient rigidity in the out-of-plane direction intersecting the vertical wall surface without adding parts such as vibration damping materials while ensuring rigidity with respect to the vertical input from the suspension member. It is aimed.

  The present invention provides a spherical bulging portion that bulges in a spherical shape toward a direction intersecting the vertical wall surface on a vertical wall surface of a wheel house inner provided with an attachment portion for a suspension member at the upper portion. The most important feature is that the bead portion is provided so as to cross the top and bottom.

  According to the present invention, the bead portion can secure the rigidity in the out-of-plane direction intersecting the vertical wall surface by the spherical bulge portion while ensuring the rigidity with respect to the vertical input from the suspension member.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a vehicle body structure showing an embodiment of the present invention, and corresponds to a view of the periphery of the wheel house inner 1 on the left side in the vehicle width direction as viewed from the passenger compartment side. 2 is a cross-sectional view taken along the line AA in FIG. In the figure, the direction indicated by the arrow FR is the front side of the vehicle body, and the direction indicated by the arrow UP is the upper side of the vehicle body.

  The wheel house inner 1 has a shape protruding toward the vehicle compartment 3 side, and houses the rear tire 7 in the wheel house 5 outside the vehicle compartment 3 (right side in FIG. 2).

  As shown in FIG. 2, the lower edge 1 a of the wheel house inner 1 protrudes upward at the side edge 9 a that bends upward on the outside of the floor panel 9 and the outer edge of the rear side member 11 that extends in the longitudinal direction of the vehicle body. It is sandwiched and fixed between the projecting portions 11a. The flange 11 b inside the rear side member 11 is bonded and fixed to the lower surface of the floor panel 9.

  Further, one end of a cross member 13 extending in the vehicle width direction is joined and fixed to a side surface of the rear side member 11 at a position corresponding to the vicinity of the front side of the vehicle body of the wheel house inner 1, and the outer side of the upper portion of the cross member 13 is fixed. The flange 13a spreading to the bottom is joined and fixed to the lower surface of the floor panel 9 described above. An end of the rear side member 11 on the rear side of the vehicle body is joined and fixed to a rear panel 15 extending in the vehicle width direction in the vicinity of the rear side of the vehicle body of the wheel house inner 1.

  The wheel house inner 1 includes an upper inclined surface 17 and a vertical wall surface 21 extending continuously downward substantially vertically from the ridge line portion 19 at the lower edge of the inclined surface 17. As shown in FIG. 3, which is a front view seen from the side 5, the whole has a substantially triangular shape. Corresponding to this triangular shape, the vertical wall surface 21 also has a substantially triangular shape in front view. For this reason, the ridgeline part 19 used as the boundary part of the vertical wall surface 21 and the inclined surface 17 inclines so that it may go down toward the right-and-left both ends from the upper center in FIG.

  Further, a plurality of beads 23 are formed from the vicinity of the outer peripheral edge portion 17 a of the inclined surface 17 to a part of the upper portion of the vertical wall surface 21 beyond the ridge line portion 19 to enhance the rigidity. The bead 23 protrudes toward the wheel house 5 side.

  As shown in FIG. 3, a cutout portion 25 is formed in the upper portion of the inclined surface 17 in the vehicle longitudinal direction, and a shock absorber mounting portion 29 for attaching a shock absorber 27 as a suspension member to the cutout portion 25. Is provided. In FIG. 3, the shock absorber 27 and the shock absorber mounting portion 29 are omitted.

  The shock absorber mounting portion 29 includes a horizontal plane 29a, an inclined surface 29b that is inclined from the end of the horizontal plane 29a on the outer side in the vehicle width direction toward the upper portion on the outer side in the vehicle width direction as shown in FIG. Each side surface 29c has a triangular shape and is attached to the wheel house inner 1 so as to close the notch 25 described above.

  A mounting hole 29d is formed in the horizontal surface 29a of the shock absorber mounting portion 29, a fixing bush 31 is fitted into the mounting hole 29d, and the mounting shaft 33 of the shock absorber 27 is inserted into the insertion hole 31a provided at the center of the bush 31. The nut 35 is inserted and screwed into the threaded portion 37 at the tip of the mounting shaft 33 and attached.

  The vertical wall surface 21 of the wheel house inner 1 is provided with an embossed portion 37 as a spherical bulge portion. As shown in FIG. 3, the embossed portion 37 has a substantially triangular shape in front view corresponding to the outer shape of the vertical wall surface 21, and is shown in FIG. 2 and FIG. Thus, it bulges to the wheel house 5 side on the outer side in the vehicle width direction, which is the direction intersecting the vertical wall surface 21.

  As shown in FIG. 3, the embossed portion 37 described above is inclined to correspond to the lower curved portion 37 a that is a lower peripheral edge protruding downward and the ridge line portion 19 on the vehicle front side and the rear side. 37b and 37c are substantially triangular as described above. The intersections between both ends of the lower curved portion 37a and the lower ends of both inclined portions 37b and 37c are curved R portions 37d and 37e, and the intersection between the upper ends of both inclined portions 37b and 37c is the R portion 37d, The R portion 37f has a gentler curve than 37e.

  Thereby, it can be said that the embossed part 37 is an irregular elliptical shape long in the vehicle front-rear direction as a whole in the front view shown in FIG.

  Then, a linear bead portion 39 is provided so as to cross the embossed portion 37 in the vertical direction over a substantially central position of the inclined portion 37b in the embossed portion 37 and a position in the vicinity of the R portion 37d of the lower curved portion 37a. Similarly, a linear bead portion 41 is provided so as to cross the embossed portion 37 in the vertical direction over a substantially central position of the inclined portion 37c in the embossed portion 37 and a position in the vicinity of the R portion 37e of the lower curved portion 37a. As shown in FIGS. 2 and 4, these bead portions 39, 41 protrude toward the wheel house 5 side on the outer side in the vehicle width direction, like the embossed portion 37.

  Each of the bead portions 39 and 41 described above has a substantially “C” shape when viewed from the front so that the upper end portions are close to each other and the lower end portions are separated from each other. Thereby, each bead part 39 and 41 is inclined along the inclination direction of the ridge line part 19.

  Further, the bead portion 39 on the vehicle body front side of the bead portions 39 and 41 is directed from the vicinity of the shock absorber mounting portion 29 toward the vicinity of the cross member 13 which is a vehicle body skeleton member, as shown in FIG. It is extended. Similarly, the bead portion 41 on the rear side of the vehicle body extends from the vicinity of the shock absorber mounting portion 29 toward the vicinity of the rear panel 15 that is the vehicle body skeleton member.

  In such a vehicle body structure, by providing the embossed portion 37 on the vertical wall surface 21 of the wheel house inner 1, it is possible to ensure rigidity in an out-of-plane direction intersecting the vertical wall surface 21, and to reduce road noise during vehicle travel. In addition, the rigidity of the shock absorber mounting portion 29 can be improved.

  At this time, there is no need to provide a vibration damping material such as a melt sheet or a reinforcing material on the vertical wall surface 21 or to extend the shock absorber mounting portion 29 to the vertical wall surface 21, and it is only necessary to perform embossing, so that the weight and the number of parts are increased. In addition, an increase in cost can be suppressed.

  Moreover, since the two bead portions 39 and 41 extending in the vertical direction are opposed to the vertical input from the shock absorber 27, the rigidity of the vertical wall surface 21 is ensured with respect to the vertical input. The mounting rigidity of the shock absorber mounting portion 29 can be increased.

  That is, according to the present embodiment, the bead portions 39 and 41 ensure the rigidity with respect to the vertical input from the shock absorber 27 and the embossed portion 37 secures the rigidity in the out-of-plane direction intersecting the vertical wall surface 21. be able to.

  By providing such an embossed portion 37 in almost the entire area of the vertical wall surface 21, the rigidity in the out-of-plane direction can be further enhanced. Further, since the rigidity in the out-of-plane direction is increased by providing the embossed portion 37 in almost the entire area of the vertical wall surface 21, the area of the vertical wall surface 21 is further reduced by ensuring the required out-of-plane rigidity at a minimum. This can contribute to the volume expansion of the passenger compartment 3.

  Further, since the embossed portion 37 bulges out so as to protrude outward in the vehicle width direction, the vehicle compartment 3 corresponds to the case where the embossed portion 37 is not provided as compared with the case where the embossed portion 37 is not provided. The volume of can be expanded.

  Further, a side member 13 and a rear panel 15 that are vehicle body skeleton members extending in the vehicle width direction are provided at the lower part of the wheel house inner 1, and each bead portion 39, 41 is located in the vicinity of the vehicle body skeleton member from the vicinity of the shock absorber mounting portion 29. Therefore, the upper and lower ends are constrained to form a deformation suppressing effect, the rigidity with respect to the vertical input is further increased, and the mounting rigidity of the shock absorber mounting portion 29 is further improved.

  The embossed portion 37 includes inclined portions 37b and 37c that are inclined corresponding to the ridge line portion 19 on the outer peripheral edge, and the bead portions 39 and 41 extend from the inclined portions 37b and 37c to the lower curved portion 37a that is the lower peripheral edge. By providing this, linear bead portions 39 and 41 extending in the vertical direction so as to cross the embossed portion 37 can be easily formed.

1 is a perspective view of a vehicle body structure showing an embodiment of the present invention. It is AA sectional drawing of FIG. It is the front view seen from the vehicle body outside of a wheel house inner. It is BB sectional drawing of FIG.

Explanation of symbols

1 Wheelhouse inner 13 Cross member (body frame member)
15 Rear panel (body frame member)
17 Inclined surface of wheel house inner 19 Edge line of wheel house inner 21 Vertical wall surface of wheel house inner 27 Shock absorber (suspension member)
29 Shock absorber mounting part (suspension member mounting part)
37 Embossed part (spherical bulge part)
37a Lower curved part (lower rim) of embossed part
37b, 37c Embossed part inclined part 39, 41 Bead part

Claims (5)

  A spherical bulge that bulges in a spherical shape toward the direction intersecting the vertical wall is provided on the vertical wall of the wheel house inner provided with the suspension member mounting portion at the upper part, so as to cross the spherical bulge. A vehicle body structure characterized in that the bead portion is provided in the vertical direction.   The vehicle body structure according to claim 1, wherein the spherical bulging portion is provided in substantially the entire area of the vertical wall surface.   The vehicle body structure according to claim 1, wherein the spherical bulge portion bulges outward in the vehicle width direction.   A vehicle body skeleton member extending in the vehicle width direction is provided at a lower portion of the wheel house inner, and the bead portion extends from the vicinity of the attachment portion of the suspension member toward the vicinity of the vehicle body skeleton member. The vehicle body structure according to any one of claims 1 to 3.   The wheel house inner is continuously provided with an inclined surface at the upper part of the vertical wall surface, and the ridge line part that becomes a boundary part between the vertical wall surface and the inclined surface is inclined so as to be lowered from the upper center toward both ends, 5. The spherical bulge portion includes an inclined portion that is inclined corresponding to the ridge line portion on an outer peripheral edge, and the bead portion is provided from the inclined portion to a lower peripheral edge. The vehicle body structure according to any one of claims.

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