JP4140186B2 - Vehicle fender structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle fender structure, and more particularly to a vehicle fender structure in which a fender is attached to a structural member of a vehicle such as an automobile.
[0002]
[Prior art]
Conventionally, an example of a vehicle fender structure in which a fender is attached to a structural member of a vehicle such as an automobile is disclosed in Japanese Patent Laid-Open No. 6-336179.
[0003]
As shown in FIG. 10, in this vehicle fender structure, the inner end in the vehicle width direction of the fender panel 102 adjacent to the front hood 100 of the vehicle is connected to the upper inclined surface 104 </ b> A of the front upper frame 104. In the fender panel 102, an inclined surface 106 is formed inwardly and downwardly in the vehicle width, and a buffer member 108 is installed between the inclined surface 106 and the upper surface 104B of the front upper frame 104. As a result, the inclined surface 106 of the fender panel 102 connected to the front upper frame 104 of the vehicle has a relatively small vertical rigidity so that the fender panel 102 can be easily displaced downward in response to an impact from above. It has become.
[0004]
[Problems to be solved by the invention]
However, in this vehicle fender structure, since the attachment portion of the fender panel 102 to the front upper frame 104 is the inclined surface 106, the attachment portion 106A of the inclined surface 106 and the upper inclined surface 104A of the front upper frame 104 are in the vehicle width direction. There is a problem that the engine room 110 is narrowed by projecting inward. On the other hand, if the vertical wall extending in the vertical direction is used as the attachment portion of the fender panel 102 to the front upper frame 104 in order to improve this problem, the deformation load in the vicinity of the attachment portion increases and the shock absorbing performance cannot be improved. .
[0005]
In view of the above facts, an object of the present invention is to obtain a vehicle fender structure capable of improving impact absorption performance without narrowing an engine room.
[0006]
[Means for Solving the Problems]
In the fender structure for a vehicle according to the first aspect of the present invention, the general surface between the parting portion with the hood and the structural member is an inclined wall portion that extends downward inward of the vehicle width, and the attachment portion to the structural member is substantially horizontal. A fender panel
Between the inclined wall portion and the mounting portion, a bent portion is provided at an upper and lower intermediate portion, and a folding portion that is folded by a load from substantially above and a hole portion that is reduced when the folding portion is folded are provided. It is characterized by that.
[0007]
Therefore, since the attachment portion to the structural member is not provided on the inclined wall portion as in the conventional structure, the attachment portion of the fender panel extends inward in the vehicle width direction, and the engine room is not narrowed. In addition, when a load is applied from substantially above, the inner edge of the fender in the vehicle width direction is moved downward to the outside of the vehicle to prevent interference with the hood and provided between the inclined wall and the mounting part . The folding portion having the bent portion at the upper and lower intermediate portions is folded, and the deformation load is reduced by reducing the hole portion. For this reason, impact absorption performance can be improved.
[0008]
According to a second aspect of the present invention, in the fender structure for a vehicle according to the first aspect, the folding portion is provided at least on the vehicle front-rear side of the attachment portion, and the hole portion is on the vehicle width direction outer side of the attachment portion. It is characterized by being provided in.
[0009]
Therefore, since the attachment portion to the structural member is not provided on the inclined wall portion as in the conventional structure, the attachment portion of the fender panel extends inward in the vehicle width direction, and the engine room is not narrowed. In addition, when an impact load is applied from substantially above, the folding part provided at least on the vehicle front-rear side of the attachment part is folded to absorb the impact, and the hole provided on the outer side in the vehicle width direction of the attachment part The deformation load decreases due to the shrinkage of. For this reason, impact absorption performance can be improved.
[0010]
According to a third aspect of the present invention, in the fender structure for a vehicle according to the second aspect, the folding portion has a linear length between an upper end and a lower end before folding, and a linear length between the upper end and the lower end after folding. It is set so that it may become substantially equal.
[0011]
Therefore, in addition to the content of Claim 2, when a folding part is folded, a new bending part does not arise and a deformation load can be reduced reliably.
[0012]
According to a fourth aspect of the present invention, in the fender structure for a vehicle according to any one of the second and third aspects, a recessed portion is provided in a portion of the structural member that faces the folding portion.
[0013]
Therefore, in addition to the content described in any one of claims 2 and 3, a part of the folded part enters the hollow part, so that a part of the folded part comes into contact with the structural member and bends further. Therefore, the deformation load can be further reduced.
[0014]
According to a fifth aspect of the present invention, in the fender structure for a vehicle according to the first aspect, the folding portion is provided on the vehicle width direction outer side of the attachment portion, and the hole portion is provided on the vehicle front-rear side of the attachment portion. characterized in that it was.
[0015]
Therefore, since the attachment portion to the structural member is not provided on the inclined wall portion as in the conventional structure, the attachment portion of the fender panel extends inward in the vehicle width direction, and the engine room is not narrowed. In addition, when an impact load is applied from substantially above, the folding part provided on the outer side in the vehicle width direction of the attachment part is folded to absorb the impact, and the hole part provided on the vehicle front and rear side of the attachment part is provided. The deformation load is reduced by the reduction. For this reason, impact absorption performance can be improved.
[0016]
According to a sixth aspect of the present invention, in the fender structure for a vehicle according to the fifth aspect, the folding portion is separate from the fender panel.
[0017]
Therefore, in addition to the content of Claim 5, the shape of a folding part can be set without considering the moldability of a fender panel.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
A vehicle fender structure according to a first embodiment of the present invention will be described with reference to FIGS.
[0019]
In the figure, the arrow FR indicates the vehicle front direction, the arrow UP indicates the vehicle upward direction, and the arrow IN indicates the vehicle width inside direction.
[0020]
As shown in FIG. 5, in this embodiment, the boundary 16 between the hood 12 of the vehicle body 10 and the fender panel 14 made of metal or resin extends along the vehicle longitudinal direction at both ends of the front bonnet 18 in the vehicle width direction. It extends.
[0021]
As shown in FIG. 2, a hood inner panel 20 is disposed along the vehicle front-rear direction on the lower surface side of the vehicle width direction outer side portion of the hood panel (also referred to as a hood outer panel) 12. The cross-sectional shape of the hood inner panel 20 viewed from the vehicle front-rear direction is a substantially hat shape with the opening facing upward, and an inner flange 20 </ b> A that protrudes inward in the vehicle width direction of the opening is formed on the hood panel 12. The lower surface 12A is bonded with an adhesive. In addition, an outer edge 20B in the vehicle width direction of the hood panel 12 is fixed to the outer flange 20B that protrudes outward in the vehicle width direction of the opening of the hood inner panel 20 by hemming. The closed cross-section portion 21 constituted by the hood panel 12 and the hood inner panel 20 constitutes a skeleton of the hood panel 12 and can sufficiently absorb shock even when the collision object S collides with only the hood panel 12. Has load-deformation characteristics.
[0022]
Below the boundary 16 between the hood panel 12 and the fender panel 14, an apron upper member 24 as a structural member of the vehicle body 10 is disposed along the vehicle front-rear direction. The apron upper member 24 is an apron upper member 24. An apron upper member upper 26 constituting the upper part of the upper part and an apron upper member lower 28 constituting the lower part of the apron upper member 24 are constituted.
[0023]
The apron upper member upper 26 has a U-shaped cross section with the opening facing downward, and a flange 26B is formed at the lower end of the vehicle width direction outer wall portion 26A toward the vehicle width direction outer side. On the other hand, the apron upper member lower 28 has an L-shaped cross section, and a lateral wall portion 28B is formed at the upper end portion of the vertical wall portion 28A toward the outside in the vehicle width direction. Further, the flange 26B of the apron upper member upper 26 and the front end portion 28C of the lateral wall portion 28B of the apron upper member lower 28 are welded. The lower end edge portion 26D of the inner side wall portion 26C in the vehicle width direction of the apron upper member upper 26 is welded to the inner surface 28D in the vehicle width direction at the upper end edge portion of the vertical wall portion 28A of the apron upper member lower 28.
[0024]
Accordingly, the apron upper member 24 forms a closed cross section 30 that extends in the vehicle front-rear direction by the apron upper member upper 26 and the apron upper member lower 28.
[0025]
As shown in FIG. 1, mounting holes 32 are formed in the upper wall portion 26 </ b> E of the apron upper member upper 26 at a predetermined interval along the vehicle front-rear direction.
[0026]
As shown in FIG. 2, the vehicle width direction inner edge portion 14 </ b> A of the fender panel 14 facing the vehicle width direction outer edge portion 12 </ b> B of the hood panel 12 is a parting portion with the hood in the fender panel 14. Further, the vehicle width direction inner edge portion 14A is bent downward, and there is a step portion 14F narrower toward the vehicle width inner side below the curved portion, and the vehicle width direction of the step portion 14F An inclined wall portion 14B extends from the inner end P1 toward the vicinity of the inner side in the vehicle width direction of the upper wall portion 26E of the apron upper member upper 26. Further, a substantially horizontal flange portion 14C is formed from the lower end portion P2 of the inclined wall portion 14B toward the inner side in the vehicle width direction, and the flange portion 14C contacts the upper wall portion 26E of the apron upper member upper 26. ing.
[0027]
As shown in FIG. 1, the attachment portions 14D of the fender panel 14 to the apron upper member upper 26 are formed at predetermined intervals in the vehicle front-rear direction, and the respective attachment portions 14D are substantially horizontal. A mounting hole 34 is formed in the center of each mounting portion 14D, and a bolt 36 is inserted into the mounting hole 34 and the mounting hole 32 of the apron upper member upper 26 from above.
[0028]
As shown in FIG. 2, the fender panel 14 is fixed to the apron upper member upper 26 by these bolts 36 and a weld nut 38 fixed to the lower surface side of the upper wall portion 26 </ b> E of the apron upper member upper 26.
[0029]
As shown in FIG. 1, folding portions 40, 42, and 44 that are folded by a load from substantially above are formed between the inclined wall portion 14 </ b> B and the attachment portion 14 </ b> D in the fender panel 14.
[0030]
As shown in FIG. 2, the folding portion 40 is provided on the outer side in the vehicle width direction of the mounting portion 14D, and a bent portion P3 that protrudes inward in the vehicle width direction is provided in the middle portion in the vertical direction of the folding portion 40. The cross-sectional shape of the folding portion 40 viewed from the vehicle front-rear direction is a rectangular shape bent inward in the vehicle width direction. Further, the boundary between the lower end portion of the folding portion 40 and the mounting portion 14D is a bent portion P4, the length between P1 and P2 is S1, and the length between P1 and P3 is between S2 and P3 and P4. When the length is S3 and the length between P4 and P2 is S4, these lengths have a relationship of S1≈S2−S3 + S4. In the folding unit 40, the upper end P1 and the lower end P2 after folding Is set to be substantially equal to the straight line length between the upper end P1 and the lower end P2 before folding.
[0031]
In addition, an elongate hole 46 extending in the vehicle up-down direction and crossing the bent portion P3 is formed at the center portion of the folding portion 40 in the vehicle front-rear direction, and the folding portion 40 is folded in the hole 46. At this time, the image is reduced as shown by a two-dot chain line in FIGS.
[0032]
As shown in FIG. 1, the folding part 42 is provided on the vehicle rear side of the attachment part 14D, and extends from the rear end of the folding part 40 to the vehicle width inside rear in plan view. Further, a bent portion P5 projecting inward in the front of the vehicle is provided at an intermediate portion in the vertical direction of the folding portion 42, and a cross-sectional shape viewed from the vehicle width direction of the folding portion 42 is a square shape bent toward the front side of the vehicle. Yes.
[0033]
The folding portion 44 is provided on the vehicle front side of the attachment portion 14D, and extends from the front end of the folding portion 40 to the vehicle width inside front in a plan view. The folding portion 44 has a bent portion P6 protruding inward in the rearward direction of the vehicle at the intermediate portion in the vertical direction, and the sectional shape of the folding portion 44 viewed from the vehicle width direction is a square shape bent toward the rear side of the vehicle. ing.
[0034]
As shown in FIG. 2, the upper wall portion 26E of the apron upper member upper 26 is formed with a recess 48 at a portion facing the folding portions 40, 42, 44. As shown in FIG. When the part 40 is folded, a part of the folded part 40 enters the recessed part 48.
[0035]
Next, the operation of this embodiment will be described.
[0036]
In the present embodiment, as shown in FIG. 1, the attachment portion 14 </ b> D of the fender panel 14 is fixed to the upper wall portion 26 </ b> E of the apron upper member upper 26. For this reason, since the attachment part to the apron upper member upper 26 is not provided in an inclined wall part like the conventional structure, the attachment part 14D of the fender panel 14 protrudes inward in the vehicle width direction, and the engine room 71 does not become narrow.
[0037]
On the other hand, when the collision body S collides with the vicinity of the boundary 16 between the hood panel 12 and the fender panel 14 and a load is applied from substantially upward to substantially downward (arrow A direction in FIG. 1), the hood panel 12, the part near the boundary 16 and the part near the boundary 16 in the fender panel 14 are deformed downward as shown in FIG.
[0038]
At this time, in the vehicle fender structure of the present embodiment, the folded portions 40, 42, 44 of the fender panel 14 due to the impact load from substantially above, the upper end P1 of the folded portion 40 is the lower end as shown in FIG. It rotates to the vehicle width outside centering on P2, the folding part 40 is folded, and a deformation load falls. Further, as shown by a two-dot chain line in FIG. 3, the hole portion 46 provided in the folding portion 40 on the outer side in the vehicle width direction of the attachment portion 14D is a direction in which the angle θ of the hat-shaped corner portion increases, that is, the hole The portion 46 is deformed in the direction of reduction. For this reason, if there is no hole portion 46, it is necessary to deform portions other than the corner portion, and the deformation load becomes large. However, since this can be eliminated by the hole portion 46, the deformation load is reduced. As a result, the impact absorption performance can be improved.
[0039]
In this embodiment, in FIG. 2, the length between P1-P2 in the folding unit 40 is S1, the length between P1-P3 is S2, the length between P3-P4 is between S3 and P4-P2. Assuming that the length is S4, these lengths have a relationship of S1≈S2-S3 + S4. In the folding unit 40, the linear length between the upper end P1 and the lower end P2 after folding is the upper end before folding. It becomes substantially equal to the linear length of P1 and lower end P2. For this reason, when the folding part 40 is folded, a new bending part does not occur, the deformation load can be surely reduced, and it is possible to prevent the bending part P4 from greatly projecting downward after folding.
[0040]
Further, in the present embodiment, as shown in FIG. 4, when the folding part 40 is folded, a part of the folding part 40 (bending part P <b> 4) enters the hollow part 48, and therefore a part of the folding part 40. Is in contact with the apron upper member upper 26 and is not further bent, so that the deformation load can be further reduced.
[0041]
Next, a second embodiment of the vehicle fender structure of the present invention will be described with reference to FIGS.
[0042]
In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0043]
In this embodiment, instead of the folding part 40 in the first embodiment, as shown in FIGS. 6 and 7, a large hole 60 is formed on the outer side in the vehicle width direction of the mounting part 14 </ b> D in the fender panel 14. The folding part 42 and the folding part 44 are respectively formed on the vehicle rear side and the vehicle front side of the hole part 60 as in the first embodiment.
[0044]
Next, the operation of this embodiment will be described.
[0045]
In the present embodiment, as shown in FIG. 6, the attachment portion 14 </ b> D in the fender panel 14 is fixed to the upper wall portion 26 </ b> E of the apron upper member upper 26. For this reason, since the attachment part to the apron upper member upper 26 is not provided in an inclined wall part like the conventional structure, the attachment part 14D of the fender panel 14 protrudes inward in the vehicle width direction, and the engine room 71 does not become narrow.
[0046]
On the other hand, when a portion of the fender panel 14 in the vicinity of the vehicle width direction inner edge portion 14A is deformed downward, the folding portions 42 and 44 of the fender panel 14 are folded by an impact load from substantially above to absorb the impact. At the same time, the deformation load decreases as the hole 60 is reduced. For this reason, impact absorption performance can be improved.
[0047]
Next, a third embodiment of the vehicle fender structure of the present invention will be described with reference to FIGS.
[0048]
In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0049]
In this embodiment, instead of the folding parts 40, 42, 44 in the first embodiment, as shown in FIG. 8, a large hole 64 is formed in the fender panel 14, and the mounting part of the fender panel 14 is separate. It is formed on the mounting portion 66A of the bracket 66. That is, a mounting hole 32 for the apron upper member upper 26 is formed in the mounting portion 66A of the bracket 66, and an inner end portion 66B in the vehicle width direction of the mounting portion 66A is formed continuously to the flange portion 14C of the hood panel 14. It is joined to the lower surface of the joined part 14E.
[0050]
A flange portion 66C is formed at the upper end portion of the bracket 66, and the flange portion 66C is joined to the back surface of the inclined wall portion 14B. The flange portions 66C extend in the vehicle front-rear direction, and wide portions 66D are formed at both ends in the front-rear direction.
[0051]
As shown in FIG. 9, the hole 64 is set to a size that allows a jig 80 for fastening the bolt 36 to enter, and between the mounting portion 66 </ b> A of the bracket 66 and the flange portion 66 </ b> C of the bracket 66, A folding portion 68 that is folded by a load from substantially above is formed. That is, the folding portion 68 is provided on the outer side in the vehicle width direction of the mounting portion 66A, and a bent portion P7 that protrudes outward in the vehicle width direction is provided at the middle portion in the vertical direction of the folding portion 68. The cross-sectional shape seen from the front-rear direction is a square shape bent outward in the vehicle width direction. As a result, as shown in FIG. 8, a hole 72 and a hole 74 are formed on the front side and the rear side of the folding portion 68, respectively.
[0052]
Next, the operation of this embodiment will be described.
[0053]
In the present embodiment, as shown in FIG. 8, the attachment portion 66 </ b> A of the fender panel 14 is fixed to the upper wall portion 26 </ b> E of the apron upper member upper 26. For this reason, since the attachment part to the apron upper member upper 26 is not provided in an inclined wall part like the conventional structure, the attachment part 14D of the fender panel 14 protrudes inward in the vehicle width direction, and the engine room 71 does not become narrow.
[0054]
On the other hand, when a portion of the fender panel 14 in the vicinity of the vehicle width direction inner edge portion 14A is deformed downward, the folding portion 68 of the fender panel 14 is folded and absorbed by the impact load from substantially above, The deformation load is reduced by reducing the holes 72 and 74. For this reason, impact absorption performance can be improved.
[0055]
In the present embodiment, since the attachment portion 66A and the folding portion 68 are formed in the bracket 66 that is separate from the fender panel 14, the shape of the folding portion 68 can be set without considering the formability of the fender panel 14. . As a result, for example, the design freedom of the fender panel 14 is improved.
[0056]
Although the present invention has been described in detail with reference to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, the cross-sectional shape of the folding portions 40, 42, 44, and 68 is not limited to the square shape, and may be other shapes such as a Z shape.
[0057]
【The invention's effect】
In the fender structure for a vehicle according to the first aspect of the present invention, the general surface between the parting portion with the hood and the structural member is an inclined wall portion that extends downward inward of the vehicle width, and the attachment portion to the structural member is substantially horizontal. A folding part that has a bent part in the upper and lower middle part between the inclined wall part and the mounting part, and is folded by a load from substantially above , and a hole part that is reduced when the folding part is folded Therefore, the impact absorbing performance can be improved without narrowing the engine room.
[0058]
According to a second aspect of the present invention, in the vehicle fender structure according to the first aspect, the folding portion is provided at least on the vehicle front-rear side of the attachment portion, and the hole portion is provided outside the attachment portion in the vehicle width direction. And, it has an excellent effect that the shock absorbing performance can be improved without narrowing the engine room.
[0059]
According to a third aspect of the present invention, in the fender structure for a vehicle according to the second aspect, the folding portion has a linear length between the upper end and the lower end before folding and a linear length between the upper end and the lower end after folding. Since they are set to be equal, in addition to the effect described in claim 2, it has an excellent effect that the deformation load can be surely reduced.
[0060]
According to a fourth aspect of the present invention, in the fender structure for a vehicle according to the second or third aspect, a recess is provided in a portion of the structural member that faces the folding portion. In addition to the effects described in (1), the deformation load can be further reduced.
[0061]
Since the present invention according to claim 5, in which the fender structure according to claim 1, the folded portion is provided in the vehicle width direction outer side of the mounting portion, the hole portion provided on the vehicle front and rear side of the mounting portion, It has an excellent effect of improving the impact absorption performance without narrowing the engine room.
[0062]
According to a sixth aspect of the present invention, in the fender structure for a vehicle according to the fifth aspect, since the folding portion is separate from the fender panel, the formability of the fender panel is added to the effect of the fifth aspect. It has the outstanding effect that the shape of a folding part can be set, without considering.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a fender structure of a vehicle according to a first embodiment of the present invention, as seen from the obliquely forward inner side of a vehicle body.
FIG. 2 is a cross-sectional view taken along line 2-2 of FIG.
3 is an enlarged cross-sectional view taken along line 3-3 in FIG.
FIG. 4 is an operation explanatory view of a vehicle fender structure according to the first embodiment of the present invention.
FIG. 5 is a perspective view showing a vehicle to which the vehicle fender structure according to the first embodiment of the present invention is applied.
FIG. 6 is a perspective view showing a fender structure of a vehicle according to a second embodiment of the present invention as seen from the obliquely forward inner side of the vehicle body.
FIG. 7 is a side view showing a fender structure of a vehicle according to a second embodiment of the present invention as seen from the inner side in the vehicle width direction.
FIG. 8 is a perspective view showing a fender structure of a vehicle according to a third embodiment of the present invention as seen from the obliquely forward inner side of the vehicle body.
9 is an enlarged cross-sectional view taken along line 9-9 of FIG.
FIG. 10 is a sectional view showing a fender structure of a vehicle according to a conventional embodiment as seen from the front of the vehicle.
[Explanation of symbols]
12 Hood 14 Fender panel 14A Inner edge of the fender panel in the vehicle width direction (parting with the hood)
14B Fender panel inclined wall 14D Fender panel mounting 24 Apron upper member (structural member)
26 Apron Upper Member Upper 40 Folding part 42 Folding part 44 Folding part 46 Folding part 48 Folding part 60 Hole part 66 Bracket 66A Bracket mounting part (fender panel mounting part)
72 Hole 74 Hole

Claims (6)

An inclined wall portion toward the vehicle width inwardly downwards a general surface between the parting portion and the structural member of the hood, having a fender panels substantially horizontal attachment portion to the structural member,
Between the inclined wall portion and the mounting portion, a bent portion is provided at an upper and lower intermediate portion, and a fold portion that is folded by a load from substantially above and a hole portion that is reduced when the fold portion is folded are provided. A vehicle fender structure characterized by the above.   2. The vehicle fender structure according to claim 1, wherein the folding portion is provided at least on a vehicle front-rear side of the attachment portion, and the hole portion is provided on an outer side in the vehicle width direction of the attachment portion.   The vehicle according to claim 2, wherein the folding portion is set so that a linear length between the upper end and the lower end before folding and a linear length between the upper end and the lower end after folding are substantially equal. Fender structure.   The vehicle fender structure according to any one of claims 2 and 3, wherein a recess portion is provided in a portion of the structural member that faces the folding portion. 2. The vehicle fender structure according to claim 1, wherein the folding portion is provided on an outer side in the vehicle width direction of the attachment portion, and the hole portion is provided on a vehicle front-rear side of the attachment portion.   6. The vehicle fender structure according to claim 5, wherein the folding portion is separate from the fender panel.

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