JP6729178B2 - Hood inner panel - Google Patents

Description

The present invention relates to a hood inner panel that forms a front hood of a vehicle.

Generally, as a performance of a vehicle, a head injury value is evaluated as an impact on a pedestrian's head when an automobile collides with a pedestrian at a constant speed. That is, the front hood of a vehicle is required to be sufficiently deformable when an impact is applied. On the other hand, the hood inner panel that constitutes the front hood needs to have appropriate strength and rigidity in order to suppress the deformation of the entire panel and ensure the rigidity of the vehicle body. That is, the hood inner panel is required to be easily deformable at the time of collision while ensuring strength and rigidity under normal conditions.

Therefore, a hood inner panel having a trim hole and a bead extending so as to intersect the bent portion has been proposed (for example, refer to Patent Document 1). In the invention described in Patent Document 1, the hood inner panel is easily deformed by forming the trim hole and the bead.

JP, 2005-182738, A

However, if not only the beads but also the trim holes are to be formed in the hood inner panel, punching must be performed in addition to bending, which increases the number of types of processing required. On the other hand, if it is attempted to make the hood inner panel sufficiently deformable only by the beads, many beads are required and complicated processing may be required.

An object of the present invention is to provide a hood inner panel that can be easily manufactured and is easily deformed.

A hood inner panel of the present invention is a hood inner panel that constitutes a front hood of a vehicle, and has an opening formed in a central portion, and an inner inclined surface portion that extends downward from the opening toward the outside. A horizontal plane portion that extends continuously along the horizontal plane outside the inner inclined plane portion, an outer inclined plane portion that extends downward toward the outer side of the horizontal plane portion, the outer inclined plane portion that extends downward, It has an inner bent portion formed between a horizontal surface portion and an outer bent portion formed between the horizontal surface portion and the outer inclined surface portion, and extends from the inner side to the outer side on both sides in the vehicle width direction. At least one of the plurality of inner beads and the plurality of outer beads, the plurality of inner beads being formed at least on the inner inclined surface portion, and the plurality of outer beads being formed so as to cross the outer bent portion. The portion forms a bead pair that is aligned with each other along the extending direction of the inner bead.

According to the hood inner panel of the present invention, the hood inner panel can be easily manufactured and easily deformed.

It is a perspective view showing a vehicle provided with a front hood having a hood inner panel according to an embodiment of the present invention. It is a perspective view which shows the said front hood. It is sectional drawing which follows the AA line of FIG. It is a perspective view which shows the said hood inner panel. It is a top view which shows the said hood inner panel. It is a perspective view which expands and shows the principal part of the said hood inner panel. It is a perspective view which expands and shows the principal part of the said hood inner panel. It is a schematic diagram which shows the end surface of the inner inclined surface part of the said hood inner panel. It is a perspective view which expands and shows the principal part of the said hood inner panel. It is a perspective view which expands and shows the principal part of the said hood inner panel.

According to the invention described in claim 1, the opening formed in the central portion, the inner inclined surface portion extending downward from the opening toward the outer side, and the outer side of the inner inclined surface portion along the horizontal plane. Extending horizontally, an outer sloping surface portion continuously extending outside of the horizontal surface portion and extending downwardly toward the outside, an inner bent portion formed between the inner sloping surface portion and the horizontal surface portion, and a horizontal surface portion. And an outer bent portion formed between the outer inclined surface portion and a plurality of inner beads that radially extend from the inner side toward the outer side are formed on at least the inner inclined surface portion on both sides in the vehicle width direction. , A plurality of outer beads are formed so as to cross the outer bent portion, and a bead pair arranged along the extending direction of the inner bead is formed by a combination of at least a part of each of the plurality of inner beads and the plurality of outer beads. Has been formed. Thereby, the inner bead and the outer bead forming the bead pair are easily deformed at the same time, and the hood inner panel can be easily deformed. At this time, in order to make the hood inner panel easily deformable, it is only necessary to perform a process for forming beads, and since it is possible to suppress an increase in the number of beads, it is possible to easily manufacture the hood inner panel.

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 4, the hood inner panel 1 of the present embodiment constitutes a front hood 10 of a vehicle 100, and includes an opening 2 formed in a central portion and an outside from the opening 2. The inner inclined surface portion 3 extending downward as it goes, the horizontal surface portion 4 continuously extending along the horizontal surface on the outside of the inner inclined surface portion 3, and the outer surface of the horizontal surface portion 4 being continuously downward on the outer side. An outer inclined surface portion 5 extending toward the inner inclined portion 6, an inner bent portion 6 formed between the inner inclined surface portion 3 and the horizontal surface portion 4, and an outer bent portion 7 formed between the horizontal surface portion 4 and the outer inclined surface portion 5. With. The hood inner panel 1 includes, on both sides in the vehicle width direction, a plurality of inner beads 81 extending radially from the inner side to the outer side, which are formed on at least the inner inclined surface portion 3, and a plurality of outer side portions so as to cross the outer bent portion 7. A bead 82 is formed, and a combination of at least a part of each of the plurality of inner beads 81 and the plurality of outer beads 82 forms a bead pair 80 aligned in the extending direction of the inner bead 81.

In this embodiment, the vehicle width direction is the X direction, the traveling direction of the vehicle 100 is the Y direction, and the vertical direction is the Z direction. That is, the XY plane becomes the horizontal plane. Further, FIG. 4 is a perspective view of the hood inner panel 1 viewed from the lower side.

The hood inner panel 1 is formed in a rectangular shape as a whole. Specifically, it has a shape that is deformed from a rectangle so that the pair of long sides are convex toward the front. Further, the hood inner panel 1 may be disposed inside (downward) of the hood outer 20 and may be provided with a slight inclination such that the front side is lower than the rear side with respect to the XY plane.

The opening 2 is formed substantially in the center of the entire hood inner panel 1 and has a distorted shape with respect to an oval shape having a major axis in the X direction. The oval shape includes an elliptical shape and a rounded corner rectangle, and is a rounded corner rectangle in this embodiment. That is, the opening 2 has a pair of straight portions 21 extending along the X direction and semicircular portions 22 at both ends in the X direction. Furthermore, since the semicircular portion 22 is convex toward the rear side in the Y direction, a convex edge portion that is convex toward the inside is located at a position adjacent to the semicircular portion 22 in the linear portion 21 on the rear side in the Y direction. 211 is formed, and the entire opening 2 is distorted with respect to the oval shape. Further, the radius of curvature of the semicircular portion 22 is not constant, and the apex portion 221 that is convex toward the rear side has a smaller radius of curvature than other positions.

The inner inclined surface portion 3 surrounds the opening portion 2 with its inner peripheral edge and extends away from the hood outer 20 toward the outer side. On the outside of the semicircular portion 22 of the opening 2 of the inner inclined surface portion 3, as shown in FIGS. 5 to 7, three inner beads 81 on each side in the X direction (81A, 81B in order from the rear side). , 81C) are formed. The three inner beads 81</b>A to 81</b>C extend radially from the approximate center of the semicircular portion 22 toward the outside, and extend to the opening 2.

That is, the rear inner bead 81A extends in a direction slightly inclined rearward in the Y direction with respect to the X direction, and the inner inner bead 81B in the center is slightly inclined frontward in the Y direction with respect to the X direction. Is defined as the extending direction, and the front inner bead 81C is defined as a direction in which the front inner bead 81C is further inclined to the front side in the Y direction with respect to the inner bead 81B. Further, the apex portion 221 is located on the extension line of the rear inner bead 81A. Further, the inner beads 81A to 81C are formed to be convex downward. The rear inner bead 81A extends outward from the apex portion 221. That is, the apex portion 221 is located on the extension line of the inner bead 81A.

In addition, on the inner peripheral edge of the inner inclined surface portion 3, at positions (both sides) sandwiching the inner bead 81, as schematically shown in FIG. 8, convex in the same direction as the inner bead 81 (that is, convex downward). An edge sloping portion 31 is formed so as to be inclined. Note that FIG. 8 shows a state in which the inner peripheral edge (end surface) of the inner inclined surface portion 3 is viewed from the opening 2 side.

A polygonal (square in this embodiment) hole 32 is formed in the inner inclined surface 3. The hole 32 is formed so as to penetrate the hood inner panel 1. Further, the plurality of holes 32 are arranged side by side in the X direction on the front side in the Y direction. The hole is not limited to a square shape, and may be a polygonal shape (that is, a shape other than a circular shape or an oval shape).

The horizontal plane portion 4 is continuous with the outside of the inner inclined surface portion 3 and extends along the XY plane so as to surround the inner inclined surface portion 3. When the entire front hood 10 is provided with a slight inclination with respect to the XY plane, the horizontal plane portion 4 may also be slightly inclined with respect to the XY plane in accordance with the entire front hood 10.

The outer inclined surface portion 5 is continuous to the outside of the horizontal surface portion 4 and extends so as to surround the horizontal surface portion 4 and separate from the hood outer 20 toward the outside.

In the outer bent portion 7 between the horizontal surface portion 4 and the outer inclined surface portion 5, four outer beads 82 (82A in order from the rear side, respectively on the both sides in the X direction) outside the semicircular portion 22 of the opening 2. 82B, 82C, 82D) are formed. As shown in FIGS. 9 and 10, the outer beads 82A to 82D are formed so as to cross (substantially orthogonally) the outer bent portion 7, one end of which is located in the horizontal plane portion 4 and the other end is inclined to the outside. It is located on the face 5. The outer beads 82A to 82D are formed to be convex downward.

Of the three inner beads 81A to 81C and the four outer beads 82A to 82D as described above, the inner bead 81A and the outer bead 82A are arranged side by side along the extending direction of the inner bead 81A. The combination forms a bead pair 80. Similarly, the inner bead 81B and the outer bead 82D are aligned with each other along the extending direction of the inner bead 81B, and a bead pair 80 is formed by a combination thereof. The outer bead 82 forming the bead pair 80 may be formed at a position slightly displaced from the extending direction of the inner bead 81. The inner bead 81A and the outer bead 82A, and the inner bead 81B and the outer bead 82D that form the bead pair 80 are arranged at the four corners of the rectangular hood inner panel 1, respectively. Note that bead pairs may be provided in addition to the four corners.

According to this embodiment, the following effects can be obtained. That is, the inner bead 81 formed on the inner inclined surface portion 3 and the outer bead 82 formed on the outer bent portion 7 form a bead pair 80 that is arranged side by side along the extending direction of the inner bead 81. Then, when an impact is applied to the front hood 10, the inner bead 81 and the outer bead 82 that form the bead pair 80 are easily deformed at the same time, and the hood inner panel 1 can be easily deformed. At this time, in order to make the hood inner panel 1 easily deformable, it is only necessary to perform processing for forming beads, and since it is possible to suppress an increase in the number of beads, it is possible to easily manufacture.

Further, since the inner bead 81 extends to the opening 2, the inner bead 81 can be easily deformed from the opening 2 side when an impact is applied. Further, since the edge beveled portions 31 that are inclined so as to be convex in the same direction as the inner bead 81 are formed on both sides of the inner bead 81 at the inner peripheral edge of the inner beveled surface portion 3, the deformation of the edge beveled portion 31 is prevented. It can be a starting point for the deformation of the inner bead 81.

Further, since the opening 2 has a distorted shape with respect to the oval shape having the major axis in the X direction, the rigidity of the hood inner panel 1 can be improved as compared with a configuration in which the opening is oval or circular. It can be lowered and easily deformed.

Further, since the semicircular portion 22 of the opening 2 has the apex portion 221 having a smaller radius of curvature than other positions, the hood inner panel 1 is easily deformed at the apex portion 221 when an impact is applied. That is, the hood inner panel 1 is easily deformed so that both sides of the apex portion 221 at the inner peripheral edge of the inner inclined surface portion 3 come close to each other.

Moreover, since the apex portion 221 is located on the extension line of the inner bead 81A, the inner bead 81A can be further easily deformed. Further, this inner bead 81A forms a bead pair 80 together with the outer bead 82A, and the apex portion 221, the inner bead 81A, and the outer bead 82A are aligned along a straight line, and these can be easily deformed. it can.

Further, since the polygonal hole portion 32 is formed in the inner inclined surface portion 3, it is possible to easily deform the inner inclined surface portion 3 with the corner of the hole portion 32 as a fulcrum. As a result, the entire hood inner panel 1 is easily deformed, and it is less likely that the inner bead 81 and the outer bead 82 forming the bead pair 80 are deformed as described above.

The present invention is not limited to the above-described embodiments, but includes other configurations and the like that can achieve the object of the present invention, and the following modifications and the like are also included in the present invention.

For example, in the above-described embodiment, the inner bead 81 is formed on the inner inclined surface portion 3, but the inner bead may be formed on at least the inner inclined surface portion 3, and not only the inner inclined surface portion 3 but also the inner It may be formed so as to extend to the bent portion 6 and the horizontal surface portion 4.

In addition, in the above-described embodiment, the bead pair 80 is formed by combining two of the three inner beads 81 and the four outer beads 82, but at least one bead pair is formed. For example, a bead pair may be formed by a combination of one inner bead and one outer bead, and the same number of inner beads and outer beads are provided, and all inner beads and outer beads are provided. A bead pair may be formed by the combination of.

Further, in the above embodiment, the inner bead 81 extends to the opening 2 and the edge slanted portion 31 is formed on the inner peripheral edge of the inner slanted surface portion 3. However, when the inner bead is sufficiently deformable, The inner bead does not have to extend to the opening 2, and the edge slant portion 31 does not have to be formed on the inner slant surface portion 3. Further, instead of forming the edge inclined portion 31 that is inclined so as to be convex in the same direction as the inner bead, for example, by forming the vicinity of the inner bead in the inner peripheral edge of the inner inclined surface portion 3 to be thin, the inner bead It may be used as a starting point for deformation.

Further, in the above-described embodiment, the semicircular portion 22 of the opening 2 has the apex portion 221 having a smaller radius of curvature than other positions. If the panel 1 is easily deformed, the apex portion 221 may not be formed.

Further, in the above-described embodiment, the apex portion 221 is located on the extension line of the inner bead 82A, but the apex portion may be arranged with respect to the extension line of the inner bead. With such a configuration, it is possible to increase the number of easily deformable portions of the hood inner panel 1.

Further, in the above-described embodiment, the opening 2 has the convex edge portion 211 that is convex inward. However, when the hood inner panel 1 is easily deformed, the opening portion has the convex edge portion. It may be a non-formed shape (not distorted with respect to the oval shape).

Further, in the above-described embodiment, the polygonal hole portion 32 is formed in the inner inclined surface portion 3. However, when the inner inclined surface portion 3 is easily deformed, the hole portion may not be formed. Good.

Besides, the best configuration, method, and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited thereto. That is, the invention is mainly illustrated and described with respect to particular embodiments, but without departing from the scope of the technical idea and object of the invention, the shape of the embodiments described above Those skilled in the art can make various modifications in terms of material, quantity, and other detailed configurations. Therefore, the description limiting the shape, the material, etc. disclosed above is described as an example for facilitating the understanding of the present invention and does not limit the present invention. The description with the names of members excluding some or all of the above limitations is included in the present invention.

100 vehicle 10 front hood 1 hood inner panel 2 opening 211 convex edge 221 apex portion 3 inner inclined surface portion 31 edge inclined portion 32 hole portion 4 horizontal surface portion 5 outer inclined surface portion 6 inner bent portion 7 outer bent portion 81 inner bead 82 outer Bead 80 bead pair

Claims (5)

A hood inner panel that constitutes a vehicle front hood,
An opening formed in the central part,
An inner inclined surface portion extending downward from the opening toward the outside,
A horizontal plane portion that continuously extends along a horizontal plane outside the inner inclined surface portion,
An outer inclined surface portion that extends downward toward the outside continuously to the outside of the horizontal surface portion,
An inner bent portion formed between the inner inclined surface portion and the horizontal surface portion,
An outer bent portion formed between the horizontal surface portion and the outer inclined surface portion,
On both sides in the vehicle width direction, a plurality of inner beads extending from the inner side to the outer side are formed on at least the inner inclined surface portion, and a plurality of outer beads are formed so as to cross the outer bent portion.
A hood inner panel, wherein a bead pair arranged along the extending direction of the inner bead is formed by a combination of at least a part of each of the plurality of inner beads and the plurality of outer beads. The inner bead extends to the opening,
The inner peripheral edge of the inner inclined surface portion is formed with an edge inclined portion that is inclined so as to be convex in the same direction as the inner bead, at a position sandwiching the inner bead. Hood inner panel. The hood inner panel according to claim 1 or 2, wherein the opening is formed in an oval shape having a major axis in the vehicle width direction and has a convex edge portion that is convex inward. The opening has, on both sides in the vehicle width direction, an apex having a smaller radius of curvature than other positions,
The hood inner panel according to claim 3, wherein the apex portion is located on an extension line of one of the inner beads. The hood inner panel according to any one of claims 1 to 4, wherein a polygonal hole portion is formed in the inner inclined surface portion.

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