JP2015033869A - Vehicle front structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle front structure that allows even a vehicle, in which a height size of an upper member is set larger, to suppress deformation or the like of the upper member when travelling on a rough road.SOLUTION: A vehicle front structure comprises: a front side member 12 that supports a suspension member at both sides of an engine room; an apron panel 23 that is provided outside in a vehicle width direction of the front side member 12 and constitutes a front part of a wheel house 20 for storing front wheels; a suspension tower 24 that has a ceiling member 24t connected to an upper end portion of a shock absorber at an upper end position behind the panel; and an upper member 27 that is erected outside in the vehicle width direction of the wheel house 20 and constitutes a longitudinal wall surface. Here, a plurality of reinforcing members 31, 34 and 36 are arranged linearly in a side view and fixed in a range from the front side member 12 through the wheel house 20 to the upper end position of the upper member 27.

Description

  The present invention relates to a vehicle front structure that takes into account reinforcement of an apron panel, a suspension tower, and an upper member that constitute an engine room.

A technique related to this vehicle front structure is described in Patent Document 1.
As shown in FIG. 8, the technique of Patent Document 1 is a front structure of a sedan type passenger car. A front side member 101 that supports a suspension member (not shown) from both the left and right sides is provided in the engine room of the passenger car so as to extend in the vehicle front-rear direction. Further, a wheel house 103 in which front wheels (not shown) are housed is provided outside the left and right front side members 101 in the vehicle width direction. A shock absorber (not shown) is provided at a substantially central position of the wheel house 103. A suspension tower 104 that supports the upper end portion by a ceiling portion 104t is provided. An upper member 106 is provided outside the wheel house 103 in the vehicle width direction.
Further, a reinforcing member 107 is provided inside the suspension tower 104, and a lower end portion of the reinforcing member 107 is fixed to the outer surface of the front side member 101. The upper end portion of the reinforcing member 107 extends to the vicinity of the ceiling portion 104t of the suspension tower 104. Thereby, the intensity | strength of the ceiling part 104t vicinity of the suspension tower 104 improves. As a result, even when a load is applied from the shock absorber to the ceiling portion 104t of the suspension tower 104 during traveling of the vehicle, deformation of the wheel house 103 and the like can be suppressed.

JP 2009-137379 A

  However, in the case of a one-box type passenger car having a vehicle height that is higher than that of a sedan type passenger car, the height dimension of the upper member 106 is increased, so that a load during a rough road travels from the shock absorber to the ceiling 104t of the suspension tower 104. When added, the upper member 106 is easily deformed by the deformation of the ceiling portion 104t.

  The present invention has been made to solve the above-described problems, and the problem to be solved by the present invention is that the above-mentioned problem during running on a rough road even if the vehicle has a large upper member height dimension. It is to be able to suppress deformation or the like of the upper member.

The above-described problems are solved by the inventions of the claims.
According to the first aspect of the present invention, a front side member that extends in the vehicle front-rear direction on both the left and right sides of the engine room of the vehicle and supports the suspension member on both the left and right sides, is provided on the outer side in the vehicle width direction of the front side member, An apron panel that constitutes the front part of the wheel house, a suspension tower that comprises a rear part of the wheel house on the rear side of the apron panel, and a ceiling member that is connected to the upper end of the shock absorber at the upper end position; A vehicle front structure comprising an upper member standing on the vehicle width direction outside of the wheel house and constituting an upper vertical wall surface in an engine room, wherein the upper member passes from the front side member through the hall house. A plurality of reinforcements are fixed in a straight line arrangement in the side view until reaching the upper end position of It is characterized in that is.

  According to the present invention, from the front side member to the upper end position of the upper member via the wheel house, the plurality of reinforcing members are fixed in a state of being linearly arranged in a side view. That is, the front side member to the upper end position of the upper member are connected in a straight line when viewed from the side by a plurality of reinforcing materials. For this reason, the upper member is indirectly supported by the highly rigid front side member via the plurality of reinforcing members. As a result, the strength of the upper member is improved, and even when the vehicle has a large height dimension, the deformation of the upper member can be suppressed when traveling on a rough road.

According to the invention of claim 2, a strip-shaped reinforcing material extending from the position of the front side member to the lower end position of the upper member at the boundary position between the apron panel and the suspension tower constituting the wheel house is a wall surface between the apron panel and the suspension tower. It is characterized by being fixed along.
That is, the strength of the boundary position between the apron panel constituting the wheel house and the suspension tower is improved by the belt-shaped reinforcing material, and the connection strength between the wheel house and the upper member is also improved.

According to the invention of claim 3, the upper member is fixed with a columnar reinforcing material extending from the lower end position to the upper end position of the upper member.
For this reason, the strength of the upper member itself is also improved.

According to the invention of claim 4, a space between the upper member and the suspension tower is reinforced by a plate-shaped reinforcing material, and one end portion of the plate-shaped reinforcing material is connected to a ceiling member of the suspension tower, The other end of the reinforcing member is connected to the upper member and the suspension tower.
For this reason, the ceiling member of the suspension tower is reinforced by the plate-shaped reinforcing material, and the strength of the upper member and the suspension tower is improved by the reinforcement member. As a result, the deformation of the upper member is suppressed.

  According to the present invention, even in a vehicle in which the height dimension of the upper member is set to be large, it is possible to suppress deformation of the upper member during traveling on a rough road.

It is a model front view of a vehicle provided with the front part structure concerning Embodiment 1 of the present invention. It is the schematic diagram which looked at the front-wheel vicinity of the said vehicle from the front. It is a perspective view showing the vehicle front part structure concerning this embodiment. It is a perspective view showing the said vehicle front part structure from a different angle. It is a VV arrow sectional view of Drawing 3. It is a side view (VI-VI arrow line view of FIG. 3) showing a vehicle front part structure. It is the perspective view which looked at FIG. 6 from diagonally forward upper direction. It is a model perspective view showing the conventional vehicle front part structure.

[Embodiment 1]
Hereinafter, the vehicle front structure according to the first embodiment of the present invention will be described with reference to FIGS. The vehicle front structure according to the present embodiment is a structure used in a one-box type passenger car having a high vehicle height.
Here, front and rear, right and left and up and down in the figure correspond to front and rear, right and left and up and down of the passenger car.

<About the front of passenger car C>
As shown in FIG. 1, the passenger car C is provided with an engine room ER on the front side of a passenger compartment R, and an upper opening of the engine room ER can be opened and closed by an engine hood 10.
In the engine room ER, as shown in FIGS. 2 and 3, front side members 12 extending in the vehicle front-rear direction are provided on the left and right sides of the engine room ER. The suspension member 14 is suspended and supported from the left and right sides by the left and right front side members 12. Further, as shown in the side view of FIG. 6, left and right ends of a rectangular frame-shaped radiator support 16 that supports a radiator (not shown) are placed at the distal ends of the left and right front side members 12. 3 and 4, the radiator support 16 is omitted.
Further, bumper reinforcements 18 are attached to the front ends of the left and right front side members 12 located outside the engine room ER via a crash box 17 as shown in FIG.

<About the front structure of the passenger car C>
In the engine room ER, as shown in FIG. 3 and FIG. 4, wheel houses 20 for storing the left and right front wheels 21 are provided at positions outside the left and right front side members 12 in the vehicle width direction. Here, only the right wheel house 20 is shown in the drawing, and the left wheel house is omitted.
The wheel house 20 constitutes an apron panel 23 constituting the front part of the wheel house 20 and a rear part of the wheel house 20, and a ceiling member 24t in which the upper end part of the shock absorber 14a (see FIG. 2) is connected to the upper end position. And a suspension tower 24 including As shown in FIG. 3, the suspension tower 24 has a rear end edge of the suspension tower 24 fixed to a dash panel 25 that partitions the engine room ER and the vehicle compartment R by, for example, spot welding. The edge 24f is fixed to the upper flange portion 12u of the front side member 12 by, for example, spot welding.

The apron panel 23 has a lower end edge 23f of the apron panel 23 fixed to the upper flange portion 12u of the front side member 12 by spot welding or the like, like the suspension tower 24. Further, as shown in FIG. 5 (cross-sectional view taken along the arrow V in FIG. 3), the apron extension 31, which is a band-shaped reinforcing material, is formed on the back side (inside of the wheel house 20). ) And are fixed by spot welding or the like. The vicinity of the lower end portion 31d of the apron extension 31 is fixed to the upper flange portion 12u of the front side member 12 together with the lower end edge 23f of the apron panel 23 and the lower end edge 24f of the suspension tower 24 by spot welding or the like. Further, the lower end 31d of the apron extension 31 is independently fixed to the outer surface of the front side member 12 by spot welding or the like.
Here, the position where the lower end 31d of the apron extension 31 is fixed to the outer surface of the front side member 12 is such that the body side mounting portion 14c of the suspension member 14 is connected to the front side member 12 as shown in FIG. And the same position in the vehicle front-rear direction.

  An upper member 27 constituting an upper vertical wall surface in the engine room ER is fixed to the outside of the apron panel 23 and the suspension tower 24 constituting the wheel house 20 in the vehicle width direction. A fender panel 11 (see FIG. 1) is joined to the upper member 27 from the outside in the vehicle width direction. As shown in FIGS. 6 and 7, the upper member 27 has a rear end portion of the upper member 27 fixed to a front pillar 28 that supports a front door (not shown). The upper portions of the left and right upper members 27 are connected to each other by a cowl panel 29 that supports the windshield G on the upper side of the dash panel 25. A hinge mechanism 40 is mounted on the left and right upper members 27 to support the engine hood 10 so that the engine hood 10 can be turned up and down.

  As shown in FIG. 7, the upper member 27 is formed in a shallow box shape having an opening on the outer side in the vehicle width direction, and the inside of the upper member 27 is partitioned vertically by a partition wall 27w extending in the vehicle front-rear direction. 3 to 5, the upper flange portion 23u of the apron panel 23 and the upper flange portion 24u of the suspension tower 24 are fixed to the lower portion 27d of the upper member 27 on the engine room ER side by spot welding or the like. Yes. Further, as shown in FIG. 5, an upper end portion 31u of an apron extension 31 that reinforces a mating portion between the apron panel 23 and the suspension tower 24 is fixed to the lower surface 27k of the upper member 27 by spot welding or the like.

As shown in FIGS. 6 and 7, a bulk 34, which is a rib-shaped reinforcing material extending upward from the vicinity of the lower surface 27 k of the upper member 27, is fixed to the inside of the upper member 27, as shown in FIGS. 6 and 7. Further, inside the upper member 27, a vertical column 36 which is a columnar reinforcing material extending to the upper end position along the extension line of the bulk 34 is fixed above the partition wall 27w.
Here, as shown in FIG. 6, the apron extension 31, the bulk 34, and the vertical column 36 are arranged in a straight line upward from the position of the body side mounting portion 14 c of the suspension member 14 in a side view. FIG. 2 schematically shows the positional relationship between the apron extension 31, the bulk 34, and the vertical support 36 as viewed from the front side of the vehicle.
That is, the apron extension 31 corresponds to the strip-shaped reinforcing material of the present invention, and the bulk 34 and the vertical column 36 correspond to the columnar reinforcing material of the present invention.

Further, as shown in FIGS. 3 and 4, a plate-like gusset 37 for preventing the upper member 27 from collapsing is fixed to the hollow portion formed by the side of the upper member 27 on the engine room ER side and the suspension tower 24. Yes. The gusset 37 is fixed to the side surface of the upper member 27 by spot welding or the like with a part of the side surface of the upper member 27 covered from the upper end to the lower end. The one end 37x of the gusset 37 is fixed to the ceiling member 24t of the suspension tower 24 by spot welding or the like. Further, the other end portion 37d of the gusset 37 is spot welded to the lower side portion 27d of the upper member 27 together with the upper flange portion 24u of the suspension tower 24 and the upper flange portion 23u of the apron panel 23 at the position of the apron extension 31, as shown in FIG. It is fixed by etc.
That is, the gusset 37 corresponds to the plate-like reinforcing material of the present invention.

<Advantages of the vehicle front structure according to this embodiment>
According to the vehicle front structure according to the present embodiment, a plurality of reinforcing materials, that is, an apron extension 31, a bulk 34, and a vertical column 36, are provided from the front side member 12 through the wheel house 20 to the upper end position of the upper member 27. Are fixed in a state of being arranged linearly in a side view. That is, from the front side member 12 to the upper end position of the upper member 27, the apron extension 31, the bulk 34, and the vertical column 36 are connected in a straight line shape in a side view. For this reason, the upper member 27 is indirectly supported by the highly rigid front side member 12 via the apron extension 31, the bulk 34, and the vertical column 36. Therefore, the strength of the upper member 27 is improved, and even when the height of the upper member 27 is large, deformation of the upper member 27 can be suppressed when traveling on a rough road.

In addition, an apron extension 31 (a belt-like reinforcing material) extending from the position of the front side member 12 to the lower end position of the upper member 27 is located at the boundary position between the apron panel 23 and the suspension tower 24 constituting the wheel house 20. And fixed along the wall. For this reason, the strength of the boundary position between the apron panel 23 and the suspension tower 24 constituting the wheel house 20 is improved, and the connection strength between the wheel house 20 and the upper member 27 is also improved.
Further, since the upper member 27, the bulk 34 extending upward from the lower end position to the upper end position of the upper member 27, and the vertical strut 36 (strut-shaped reinforcing material) are fixed, the strength of the upper member 27 itself is also improved.
Further, since the gusset 37 (plate-shaped reinforcing material) prevents the upper member 27 and the suspension tower 24 from falling, deformation of the upper member 27 is suppressed.

<Example of change>
In addition, this invention is not limited to the said embodiment, The change in the range which does not deviate from the summary of this invention is possible. For example, in the present embodiment, a partition wall 27w that extends in the vehicle front-rear direction is formed inside the upper member 27, a bulk 34 that is a rib-like reinforcing material is fixed below the partition wall 27w, and the partition wall 27w is positioned above the partition wall 27w. The example which fixes the vertical support | pillar 36 which is a columnar reinforcement was shown. However, it is also possible to provide a columnar reinforcing material in which the bulk 34 and the vertical column 36 are integrated so that the reinforcing material intersects the partition wall 27 w of the upper member 27.
The bulk 34 and the apron extension 31 can be integrated. Further, the vertical support 36, the bulk 34, and the apron extension 31 can be integrated.

12. Front side member 14 ... Suspension member 14a ... Shock absorber 20 ... Wheel house 21 ... Front wheel 23 ... Apron panel 24 ... Suspension tower 24t ...・ Ceiling member 27... Upper member 31... Apron extension (band-shaped reinforcing material)
34 ··· Bulk (strut-shaped reinforcement)
36 .. Vertical strut (strut-shaped reinforcement)
37 ... Guset (plate-like reinforcement)
ER ... Engine room

Claims (4)

A front side member that extends in the vehicle front-rear direction on both the left and right sides of the engine room of the vehicle and supports the suspension member on both the left and right sides, and a front part of the wheel house that is provided outside the front side member in the vehicle width direction and stores the front wheels An apron panel to be configured, a suspension tower including a rear portion of the wheel house on the rear side of the apron panel, and a ceiling member to which an upper end portion of a shock absorber is connected at an upper end position, and a vehicle width direction of the wheel house A vehicle front structure comprising an upper member standing on the outside and constituting an upper vertical wall surface in the engine room,
A vehicle front structure characterized in that a plurality of reinforcing members are fixed in a linearly arranged state in a side view from the front side member to the upper end position of the upper member via the hall house. . The vehicle front structure according to claim 1,
A band-shaped reinforcing material extending from the position of the front side member to the lower end position of the upper member is fixed along the wall surface of the apron panel and the suspension tower at the boundary position between the apron panel and the suspension tower constituting the wheel house. A vehicle front structure characterized by that. A vehicle front structure according to claim 1 or 2, wherein
A vehicle front structure, wherein a columnar reinforcing material extending from a lower end position of the upper member to an upper end position is fixed to the upper member. A vehicle front structure according to any one of claims 1 to 3,
Between the upper member and the suspension tower is reinforced by a plate-shaped reinforcing material,
One end of the plate-shaped reinforcing material is connected to the ceiling member of the suspension tower,
The vehicle front part structure, wherein the other end of the plate-like reinforcing member is connected to the upper member and the suspension tower.

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