JP6917413B2 - Front pillar structure - Google Patents

Description

The present invention relates to a front pillar structure.

In the conventional front pillar structure, the hinge pillar of the front door has a pair of upper and lower hinge pedestals and a concave bead portion formed in a U shape protruding inward in the vehicle width direction and extending along the longitudinal direction of the hinge pillar. And a convex bead portion formed in a U shape protruding outward in the vehicle width direction and extending from above the lower end of the concave bead portion to below the upper end of the lower hinge pedestal portion (for example, Patent Document 1 and the like). reference). In the conventional front pillar structure, the concave bead portion and the convex bead portion suppress the deformation of the side surface portion.

Japanese Unexamined Patent Publication No. 2016-68603

However, the conventional front pillar structure does not sufficiently support the reinforcement around the front pillar inner where the end of the steering hanger is mounted inside the vehicle of the front pillar.
An object of the present invention is to provide a front pillar structure capable of improving the rigidity around the front pillar.

The present invention includes a front pillar inner, a bead provided on the front pillar inner and extending in the vertical direction, and a steering hanger mounting portion provided on the front pillar inner and to which the end of the steering hanger is mounted. The bead features a front pillar structure having an upper bead that surrounds the steering hanger mounting portion and a lower bead that extends downward.

According to the present invention, there is provided a front pillar structure capable of improving the rigidity around the front pillar.

FIG. 5 is a plan view of the pillars viewed from the inside of the vehicle in the front pillar structure of the embodiment of the present invention. It is a pillar having a front pillar structure, and is a cross-sectional view taken along the line II-II in FIG. It is a plan view of the front pillar structure, with the pillar inner lower panel on the vehicle interior side removed and the lower part of the pillar viewed from the inside of the vehicle. It is a side view of the lower stiffener used for the front pillar structure. It is sectional drawing explaining the structure of the pillar corresponding to the position along the VV line in FIG. 1 in the front pillar structure. It is a cross-sectional view at a position along the VI-VI line in FIG. 1 for explaining the structure of the pillar in the front pillar structure.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate. The same components are designated by the same reference numerals, and duplicate description will be omitted. When explaining the direction, unless otherwise specified, the explanation is basically based on the front-back, left-right, or up-down as seen from the driver. Further, the "vehicle width direction" is synonymous with the "left-right direction".

First, the configuration of the front pillar 2 will be described.
FIG. 1 is a plan view of the front pillar 2 on the right front side of the vehicle 1 to which the front pillar structure of the embodiment of the present invention is applied, as viewed from the vehicle interior side.
The front pillars 2 are arranged in pairs on the left and right sides of the vehicle 1 at substantially symmetrical positions. Here, the front pillar 2 on the right side of the vehicle will be mainly described, and the front pillar on the left side of the vehicle has substantially the same configuration as the front pillar 2 on the right side, and thus the description thereof will be omitted.

The front pillar 2 is extended in the vertical direction of the vehicle. The front pillar 2 has a front pillar inner 3 mainly arranged on the vehicle interior side and a front pillar outer 4 arranged on the vehicle outer side of the front pillar inner 3 (see FIG. 2).
As shown in FIG. 5, the front pillar inner 3 and the front pillar outer 4 each have a substantially hat shape in the horizontal cross-sectional shape.
Then, the front pillar outer 4 and the front pillar inner 3 are joined by overlapping the flange portions formed on both side edges in the vehicle width direction. As a result, a hollow closed cross section is formed inside the front pillar 2.

Further, as shown in FIG. 1, a front pillar lower stiffener 7 (see FIG. 4) and a front pillar inner lower 8 are provided in the lower portion 2a of the front pillar 2 of the present embodiment. The front pillar lower stiffener 7 and the front pillar inner lower 8 connect the front pillar 2 and the side sill 5.
Further, the upper portion 2b of each front pillar 2 is connected to both left and right ends of the front edge portion of the roof side rail (not shown) to support the roof portion.

Further, the front pillar inner 3 of the present embodiment includes a front pillar inner mid 6 arranged inside the front pillar outer 4 in the vehicle width direction, and a front pillar inner inner 8 arranged below the front pillar inner mid 6. have.

Next, the configuration of the mounting portion of the steering hanger 30 will be described.
The front pillar inner mid 6 is provided with a steering hanger mounting portion 10 on the upper inner side surface of the vehicle.
The steering hanger mounting portion 10 has a plurality of upper mounting holes 10a, lower mounting holes 10b, and the like used for mounting the steering hanger 30.
The upper mounting hole 10a on the upper side of the steering hanger mounting portion 10 of the present embodiment is convex toward the vehicle interior side and is provided on the upper end surface of the trapezoidal pedestal portion 10c.
The pedestal portion 10c is provided with a raised portion around it, and an upper end surface is provided at a position one step higher than the other portions. As a result, the pedestal portion 10c has a substantially hat shape having a polygonal shape in a plan view in which the upper end surface on which the upper mounting hole 10a is formed is flat.

Further, the front pillar inner mid 6 is provided with a bead 20 extending in the vertical direction. The bead 20 of the present embodiment includes an upper bead 21 formed in the steering hanger mounting portion 10, a lower bead 22 extending downward, and a central bead 23 provided between the upper bead 21 and the lower bead 22. Have.

Of these, the upper bead 21 and the lower bead 22 are integrally extended from the central bead 23 in the upward and downward directions, respectively, and are continuously provided along the rear edge of the front pillar 2.
Further, the upper bead 21 has the lower width direction dimension which is the same as the width direction dimension of the center bead 23. The upper bead 21 is formed so that the dimension in the width direction becomes smaller (thinner) from the lower side to the upper side.

Further, the upper bead 21 has an opening on the lower lower mounting hole 10b in the steering hanger mounting portion 10 of the present embodiment near the boundary with the central bead 23. A mounting seat surface 25, which is one step higher than the surrounding surface, is formed around the lower mounting hole 10b (see FIG. 2).
The mounting seat surface 25 is formed so as to be convex toward the inside of the vehicle and at least a part of the upper end surface to be flat.
Further, the upper end 21a of the upper bead 21 of the present embodiment extends upward to a position behind the vehicle of the pedestal portion 10c in which the upper upper mounting hole 10a is formed.

As shown in FIG. 2, the steering hanger 30 is attached to the steering hanger attachment portion 10. The steering hanger 30 has a rod-shaped hanger body 32 extending in the vehicle width direction, and ends 31 and 31 provided on the left and right ends of the hanger body 32 and serving as mounting surfaces.
Then, when mounting the steering hanger 30, first, the end portion 31 is brought into contact with the steering hanger mounting portion 10 from the inside to the outside in the vehicle width direction. Next, a fastening bolt or the like is inserted into the upper mounting hole 10a and the lower mounting hole 10b, and the end portion 31 is fastened to the front pillar 2. As a result, the steering hanger 30 is fixed between the left and right front pillars 2 and 2.

As shown in FIG. 1, the pedestal portion 10c and the upper bead 21 of the present embodiment are each provided in the steering hanger mounting portion 10.
Then, what is the height direction (vehicle width direction) of the peripheral edge of the upper mounting hole 10a of the pedestal portion 10c and the height direction (vehicle width direction) of the mounting seat surface 25 of the lower mounting hole 10b of the upper bead 21? , It is set at the same height position and is formed so as to be a flush flat surface.
Therefore, in the front pillar structure of the present embodiment, the end 31 of the steering hanger 30 is mounted so as to straddle between the flat surfaces formed on the peripheral edges of the upper mounting holes 10a and the lower mounting holes 10b.
The pedestal portion 10c and the upper bead 21 are convex toward the inside of the vehicle and have a constant rigidity. Therefore, the support rigidity by the front pillar 2 is high, and the load input from the steering hanger 30 is efficiently transmitted to the front pillar 2.

Next, the configuration of the lower portion 2a of the front pillar 2 will be described with reference to FIGS. 3 to 6.
The front pillar lower stiffener 7 has an upper portion 7d on the upper end 7a side, a lower portion 7f on the lower end 7b side, and an intermediate portion 7c located between the upper portion 7d and the lower portion 7f in the vertical direction (see FIG. 4). ..
The front pillar lower stiffener 7 of the present embodiment is set so that the width direction dimension a of the upper end 7a is larger than the width direction dimension c of the intermediate portion 7c.
Further, the front pillar lower stiffener 7 is set so that the widthwise dimension b of the lower end 7b is larger than the dimension of the intermediate portion 7c. Further, in the front pillar lower stiffener 7 of the present embodiment, the lower extending portion 7g is integrally extended from the lower portion 7f on the lower end 7b side to the rear of the vehicle so that the shape of the side view is substantially a boot type. It is configured.

Therefore, the lower extending portion 7g increases the area of the lower portion 7f to be joined to the side sill 5.
Therefore, the front pillar lower stiffener 7 of the present embodiment can increase the joint area with the front pillar 2 on the upper end 7a side of the upper portion 7d and the lower end 7b side of the lower portion 7f. Therefore, the front pillar lower stiffener 7 is firmly joined to the side sill 5 by the lower portion 7f and the lower extending portion 7g.

Further, as shown in FIG. 5, the front pillar lower stiffener 7 of the present embodiment has a substantially hat shape (in some cases) that is convex toward the outside in the vehicle width direction along the front pillar outer 4 having a cross-section hat shape. It is formed so as to be approximately U-shaped).

Then, as shown in FIG. 6, the front pillar lower stiffener 7 of the present embodiment is arranged in a hollow closed cross section formed between the front pillar outer 4 and the front pillar inner 3. As a result, as shown in FIG. 3, the lower portion 7f of the front pillar lower stiffener 7 is joined to the side sill 5 to improve the mounting rigidity of the lower portion of the front pillar 2.

Further, as shown in FIG. 4, coupling holes 7e and 7e are formed on the side surface of the front pillar lower stiffener 7 on the upper end 7a side. As shown in FIG. 5, each fastening bolt 17 for fixing the door hinge 26 is inserted into each coupling hole 7e.
The upper portion of the front pillar lower stiffener 7 is joined to the door hinge 26 and the front pillar outer 4 by using a fastening bolt 17 inserted into the coupling hole 7e and a nut member 18.

Further, as shown in FIG. 4, the front pillar lower stiffener 7 integrally extends a short piece-shaped upper extending portion 7h from the upper portion 7d on the upper end 7a side to the rear of the vehicle. Then, as shown in FIG. 3, an upper extending portion 7h is sandwiched between the front pillar outer 4 and the front pillar inner mid 6.

Further, as shown in FIG. 1, the interior side of the front pillar lower stiffener 7 is joined so that the front pillar inner lower 8 covers the middle portion 7c (see FIG. 4) and the lower portion 7f of the front pillar lower stiffener 7. There is.

Further, as shown in FIG. 1, in the bead 20 formed on the front pillar inner mid 6, the lower end 22a of the lower bead 22 extends downward to the position of the upper end 7a of the front pillar lower stiffener 7.
The lower end 22a of the lower bead 22 of the present embodiment is further extended downward beyond the position of the upper end 7a. As a result, the front pillar lower stiffener 7 and a part of the lower bead 22 overlap in the vehicle width direction.

That is, in the present embodiment, as shown in FIG. 3, the lower end 22a of the lower bead 22 extends downward to the portion where the lower part of the front pillar inner mid 6 overlaps the upper part of the front pillar lower stiffener 7 in the vehicle width direction. Has been done.
In the present embodiment, as shown in FIG. 3, the impact control portion A is provided in the lower part of the front pillar inner mid 6. The impact control portion A has a function of generating a desired deformation mode and improving collision performance by combining a plurality of irregularities.

The lower end 22a of the lower bead 22 is extended downward in the vertical direction of the vehicle until it reaches the impact control portion A.
Therefore, the bead 20 does not overlap with the impact control portion A in the vehicle width direction and does not affect the collision performance. Therefore, by reducing the change in the width dimension of the lower bead 22, the load is concentrated in one place due to the sudden change in shape so that local deformation does not occur.

Further, the bead 20 of the present embodiment is formed so that the width dimension of the lower bead 22 in the vehicle front-rear direction becomes narrower toward the lower side.
Therefore, the change in strength improved by the bead 20 is gradual, and a sudden change is suppressed. Therefore, each part of the bead 20 is unlikely to be a starting point at which deformation is started.

Then, as shown in FIG. 1, in the bead 20 of the present embodiment, the central bead 23 is provided between the upper bead 21 and the lower bead 22 extending downward.
The central bead 23 has a wide portion 23a that is set wider than the upper bead 21 and the lower bead 22. The wide portion 23a of the present embodiment is provided with a harness mounting hole 24 so as to serve as a seating surface for the harness clip.

Next, the action and effect of the front pillar structure of the present embodiment will be described.
As shown in FIG. 1, the vehicle 1 adopting the front pillar structure of the present embodiment includes a front pillar inner 3, a bead 20 provided on the front pillar inner 3, and extending in the vertical direction, and a front pillar inner 3. It is provided with a steering hanger mounting portion 10 to which the end portion 31 of the steering hanger 30 is mounted. The bead 20 has an upper bead 21 that surrounds the steering hanger mounting portion 10 and a lower bead 22 that extends downward.

In the front pillar structure of the present embodiment configured as described above, the rigidity around the front pillar can be improved by the bead 20 provided in the front pillar inner 3.
That is, the bead 20 of the present embodiment has an upper bead 21 that surrounds the periphery of the steering hanger mounting portion 10 and a lower bead 22 that extends downward, and each of the bead 20 is continuous in the vertical direction from the central bead 23. It will be extended.

The front pillar inner mid 6 is reinforced by the beads 20 integrally connected along the rear edge of the front pillar 2 in this way.
The lower mounting hole 10b to which the end 31 of the steering hanger 30 is fixed is provided in the upper bead 21.
As a result, the lower mounting hole 10b, which is surrounded by the upper bead 21 having high rigidity and is arranged on the mounting seat surface 25 which is one step higher than the surrounding, can obtain a desired mounting strength.
Therefore, the load input from the steering hanger 30 is received by the mounting seat surface 25, and the bead 20 extending downward can be efficiently distributed to the front pillar inner 3.

Moreover, at the peripheral edge of the steering hanger mounting portion 10 of the present embodiment, the pedestal portion 10c and the upper bead 21 are connected via the end portion 31 by mounting the end portion 31 of the steering hanger 30.
Therefore, it is possible to further exert a synergistic effect such as improving the rigidity around the front pillar inner mid 6.

In the present embodiment, an upper bead 21 extending in the vertical direction extends behind the pedestal portion 10c of the steering hanger mounting portion 10. Therefore, the strength can be further improved.
Therefore, the load input from the steering hanger 30 received by the pedestal portion 10c is dispersed and absorbed throughout the bead 20 from the upper bead 21 to the central bead 23 and the lower bead.
Therefore, it is possible to prevent the load from being concentrated in one place and causing local deformation.

Further, the front pillar inner 3 has a front pillar inner mid 6 provided with a steering hanger mounting portion 10 and a front pillar lower stiffener 7 connected to the lower side of the front pillar inner mid 6. The lower end 22a of the lower bead 22 is extended to the upper end 7a of the front pillar lower stiffener 7.
Therefore, the fastening force between the front pillar inner mid 6 and the front pillar lower stiffener 7 can be improved, and the rigidity can be further improved.

Moreover, in the front pillar structure of the present embodiment, as shown in FIGS. 3 and 5, the front pillar outer 4 and the front pillar lower stiffener 7 can be fastened with a plurality of fastening bolts 17 and nut members 18. .. Therefore, the fastening force between the front pillar outer 4 and the front pillar lower stiffener 7 is further improved. Moreover, the fastening bolt 17 and the nut member 18 used for mounting the door hinge 26 can be shared for fastening between the front pillar outer 4 and the front pillar lower stiffener 7. Therefore, the increase in the number of parts is suppressed.

Further, as shown in FIG. 3, the lower end 22a of the lower bead 22 is extended to a portion where the front pillar lower stiffener 7 overlaps the front pillar inner mid 6.
In the front pillar structure of the present embodiment configured in this way, the rigidity is further improved by extending the lower end 22a of the lower bead 22 to the portion where the front pillar inner mid 6 is overlapped with the front pillar lower stiffener 7. Can be made to.

That is, the front pillar inner mid 6 reinforced by the bead 20 overlaps the front pillar lower stiffener 7 provided in the lower portion 2a of the front pillar 2 and the lower bead 22. The front pillar lower stiffener 7 is connected to the side sill 5 together with the front pillar inner lower 8.
Therefore, the load input from the steering hanger 30 is efficiently distributed and transmitted in the direction of the side sill 5 via the front pillar inner mid 6.
By improving the rigidity around the front pillar 2 in this way, it is possible to improve the absorption efficiency of the load applied from the steering hanger 30.

Moreover, in the front pillar structure of the present embodiment, as shown in FIG. 3, the lower bead 22 is extended to just before the lower end 22a of the bead 20 reaches the impact control portion A.
The impact control portion A exhibits desired deformation characteristics and improves collision performance.
Further, the lower bead 22 does not overlap with the impact control portion A. Therefore, the collision performance is not affected. Then, the change in the width dimension of the lower bead 22 can be moderated by the amount of stretching. Therefore, local deformation of the front pillar 2 can be suppressed.

Further, as shown in FIGS. 1 and 3, the width of the lower bead 22 of the bead 20 is formed to be narrower toward the lower side.
Therefore, a sudden change in strength is unlikely to occur in the lower bead 22, and local deformation in the vicinity of the lower end 22a of the bead 20 can be suppressed.
Further, the central bead 23 located in the middle of the bead 20 in the vertical direction is set wider than the upper bead 21 and the lower bead 22. Therefore, it is easy to provide a flat surface serving as a seating surface of the harness clip around the harness mounting hole 24.

As described above, in the front pillar structure of the present embodiment, the bead 20 provided in the front pillar inner 3 provides a front pillar structure capable of improving the rigidity around the front pillar 2.

The present invention is not limited to the above-described embodiment, and various modifications are possible. The above-described embodiments are exemplified for the purpose of explaining the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Further, it is possible to delete a part of the configuration of each embodiment, or add / replace another configuration. Possible modifications to the above embodiment are, for example, as follows.

In the present embodiment, the front pillar inner mid 6 and the front pillar lower stiffener 7 are described by showing that they overlap in the vehicle width direction, but the present invention is not particularly limited to this.
For example, the lower end surface of the front pillar inner mid 6 and the upper end surface of the front pillar lower stiffener 7 may be configured to abut each other.
In this case, a continuous bead may be formed on each of the front pillar inner 3 and the front pillar lower stiffener 7 so as to straddle the butt portion.
That is, the lower end 22a of the bead 20 may be extended so as to reach the upper end 7a of the front pillar lower stiffener 7, and the dimension extending downward beyond the position of the upper end 7a is not limited.

3 Front pillar inner 10 Steering hanger mounting part 20 Bead 21 Upper bead 22 Lower bead 30 Steering hanger 31 End

Claims (3)

Front pillar inner and
A bead provided on the front pillar inner and extending in the vertical direction,
A steering hanger mounting portion provided on the front pillar inner to which the end portion of the steering hanger is mounted is provided .
The front pillar inner has a front pillar inner mid provided with the steering hanger mounting portion and a front pillar lower stiffener connected to the lower side of the front pillar inner mid.
The bead has an upper bead that surrounds the steering hanger mounting portion and a lower bead that extends downward .
A front pillar structure characterized in that the lower end of the bead extends to the upper end of the front pillar lower stiffener. Front pillar structure according to claim 1 the lower end of said bead, wherein said front pillar Roasu tee Fna is stretched to the portion that overlaps the front pillar inner mid. The front pillar structure according to claim 1 or 2 , wherein the width of the lower portion of the bead is formed to be narrower toward the lower side.

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