JPH08174046A - Aluminum extruded profile for bending to structural member of car body - Google Patents

Abstract

PURPOSE: To provide an aluminum extruded profile for bending to a structural member of a car body which enhances the accuracy of mounting of the structural member of the car body to the car body. CONSTITUTION: The aluminum extruded profile 1 for bending to the structural member of the car body made of the aluminum extruded profile of a square section having plural hollow parts is provided with easily deformable parts 4 for absorbing the deformation in the wall 3 parts perpendicular to the bending direction between the walls 3 perpendicular to the bending direction and the walls 2 horizontal to the bending direction in the sectional shape thereof. These easily deformable parts 4 are formed to a stepped shape having partially perpendicular walls 5 and partially horizontal walls 6 which partly reduce the thickness of at least either or both of the walls 3 perpendicular to the bending direction and the walls 2 horizontal to the bending direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extruded aluminum material used as a vehicle body structural member such as a battery frame of an electric vehicle, and more particularly to an aluminum extruded aluminum material for bending into a vehicle body structural member. It is related to the profile.

[0002]

2. Description of the Related Art As a conventional aluminum extruded shape member for bending a vehicle body structural member, there is, for example, one shown in FIGS.

FIG. 15 shows a battery frame in an electric vehicle. The battery frame 101 is composed of a plurality of aluminum extruded shape members 102 having a large weight saving effect, and is shown in FIGS. 16 and 17. As described above, the bolt 10 is attached to the cross member 104 having high rigidity as the monocoque part from the lower side of the monocoque body 103.
5 and the nut 106 are attached.

Further, the battery frame 101 is
For example, to avoid interference with suspension,
Extruded aluminum profile 1 of battery frame 101
No. 07 has a curved shape, and when manufacturing the aluminum extruded shape member 107 having such a curved shape, a vehicle body structure having a square sectional shape having a plurality of hollow portions as shown in FIG. A required bending process is performed by using an extruded shape member for bending a member.

[0005]

However, in such a conventional aluminum extruded shape member for bending a vehicle body structural member, since it has an angular cross-sectional shape having a plurality of hollow portions, it is curved. When the bent shape is bent in the direction of arrow A in FIG. 18, as shown in FIG. 18, the cross-sectional shape of the bent part is such that the wall 113, which is perpendicular to the bending process that constitutes the cross section, is in the inner direction of the hollow part. Deformed into curved wall 11
3a, and the effect of this deformation is on the corner 114 of the square cross section.
Since the corner portion 114 generally has higher rigidity than the wall portion, the corner portion 114 rotates while maintaining its shape, and becomes the vehicle body mounting surface and is horizontal to the bending direction.
2 is transmitted to the curved wall 112a by being deformed toward the outside of the hollow portion in the opposite direction to the wall 113 which is perpendicular to the bending direction.
Therefore, there is a problem that a clearance is generated between (the cross member 104 of the vehicle body 103) and (the extruded shape member 107 of the battery frame 101), and the accuracy of mounting the battery frame cannot be secured.

As described above, the arrow A in FIG.
Indicates a bending center direction, and in this specification, the bending direction is perpendicular to the bending direction and the bending direction is horizontal to the arrow A direction.
Means right angle and horizontal.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and during bending, the deformation of the vehicle body mounting surface transmitted from the wall which is perpendicular to the bending direction through the corners. Is a bent aluminum extruded shape member having a cross-sectional configuration that does not cause convex deformation to the outside of the hollow portion, thereby preventing a gap from being formed between the vehicle body and the frame, It is an object of the present invention to provide an aluminum extruded profile for bending a vehicle body structural member, which can have high mounting accuracy.

[0008]

An aluminum extruded profile for bending a vehicle body structural member according to the present invention has a square cross section having one or a plurality of hollow portions as described in claim 1. In the cross-sectional shape of the aluminum extruded profile for bending into the body structural member made of the aluminum extruded profile, a wall that is perpendicular to the bending direction between the wall that is perpendicular to the bending direction and the wall that is horizontal to the bending direction. It is characterized in that it is provided with an easily deformable portion that absorbs the deformation of the portion.

Further, in an embodiment of the aluminum extruded profile for bending on the body structural member made of the aluminum extruded profile according to the present invention, as described in claim 2, the easily deformable portion has a bending direction. And at least one or both of the wall that is at a right angle and the wall that is horizontal to the bending direction are partially stepped or the thin stepped shape is a thin stepped shape other than the right angled stepped shape. In addition, as described in claim 3, the easily deformable portion has a thin-walled curved shape that is recessed inside the hollow portion or bulged outside the hollow portion, or a partially thin-walled curved shape. As described in claim 4, the easily deformable portion may have a shape of a thin-walled inclined wall or a part of a thin-walled inclined wall, and as described in claim 5, , The easily deformable part is Thickness of at least one side wall in the vicinity of the wall portion can be assumed to be part of the thin shape.

Similarly, the aluminum extruded profile for bending a body structural member made of aluminum extruded profile according to the present invention has a sectional shape of the aluminum extruded profile for bending as described in claim 6. , A structure in which an inclined wall is provided between a wall that is a mounting surface for other parts and is horizontal to the bending direction, and a wall that is horizontal to this bending direction and a wall that is orthogonal to the adjacent bending direction. It has a feature.

Similarly, the aluminum extruded profile for bending a vehicle body structural member made of the aluminum extruded profile according to the present invention has the cross-sectional shape of the aluminum extruded profile for bending as described in claim 7. , A wall that is a mounting surface for other parts and that is horizontal to the bending direction and that is adjacent to the wall that is at a right angle to the bending direction is provided with a stepped portion that is concave or convex and that is located approximately in the center of the opposite stepped portion. It is characterized in that a rib which is orthogonally connected to the stepped portion is provided.

[0012]

The aluminum extruded profile for bending a vehicle body structural member according to the present invention has a rectangular cross section having one or a plurality of hollow portions as described in claim 1. In the cross-sectional shape of the aluminum extruded profile for bending into a structural member made of timber, the deformation of the wall part that is perpendicular to the bending direction between the wall that is perpendicular to the bending direction and the wall that is horizontal to the bending direction. Since the structure is provided with a deformable portion that absorbs, when bending the extruded aluminum profile, the body mounting surface that is transmitted from the wall that is perpendicular to the bending direction through the corner of the profile Since it is an aluminum extruded shape member having a sectional configuration in which the deformation of the wall that is horizontal to the bending direction is not convex to the outside of the hollow portion, the accuracy of mounting the vehicle body structural member made of this aluminum extruded shape member to the vehicle body is high. Is good enough The be coercive.

In an embodiment of an aluminum extruded shape member for bending a car body structural member according to the present invention, as described in claim 2, the wall where the easily deformable portion is perpendicular to the bending direction. 4. At least one or both of the wall that is horizontal with the bending direction is a stepped shape that is partially thin, or the thin stepped shape is a thin stepped shape other than the right-angled stepped shape. As described in claim 4, the easily deformable portion has a thin-walled curved shape that is recessed inside the hollow portion or bulged outside the hollow portion, or has a partially thin-walled curved shape. To
The easily deformable portion may have a shape of a thin-walled inclined wall or a part of a thin-walled inclined wall, or as described in claim 5, the easily deformable portion may have a wall thickness of at least one side of the corner-neighboring wall portion. Deformation of the wall section that is at a right angle to the bending direction between the wall that is at a right angle to the bending direction and the wall that becomes the vehicle body mounting surface and is horizontal to the bending direction by making the thickness partly thin. Since the cross-sectional structure is provided with a deformable portion that absorbs, it is difficult for the deformation of the wall perpendicular to the bending direction to be transmitted to the wall that is the vehicle body mounting surface and is horizontal to the bending direction. Will be absorbed by the department.

According to the sixth aspect of the present invention, there is provided an aluminum extruded profile for bending a car body structural member, wherein the aluminum extruded profile for bending has a cross-sectional shape as follows.
Since a wall that is a mounting surface for other parts and is horizontal to the bending direction and a wall that is horizontal to this bending direction and a wall that is adjacent to the bending direction and is adjacent to each other are provided with inclined walls,
Since the section between the wall that is the mounting surface of the vehicle body and is horizontal to the bending direction and the wall that is adjacent to it and is perpendicular to the bending direction has an inclined wall, the bending direction transmitted through the inclined wall is Deformation of the wall that is at a right angle is a deformation that becomes a concave surface inside the hollow part in the wall that is the vehicle body mounting surface and that is horizontal to the bending direction. Good quality will be secured.

Further, the aluminum extruded profile for bending of a vehicle body structural member according to the present invention has the same cross-sectional shape as the aluminum extruded profile for bending as compared with other parts. A stepped portion having a concave shape or a convex shape is provided on a wall which is a mounting surface and is horizontal to the bending direction and adjacent to the wall which is perpendicular to the bending direction, and the stepped portion is provided substantially at the center of the opposite stepped portion. Since the ribs that are orthogonally connected to each other are provided, a stepped portion having a concave shape or a convex shape is provided on each wall that is perpendicular to the bending direction facing each other, and the stepped portion is formed substantially at the center of the facing stepped portion. Since the ribs that are connected orthogonally are provided, the deformation of the wall that is perpendicular to the bending direction is extremely small, and most of the deformation that is transmitted to the wall that is the vehicle body mounting surface and that is horizontal to the bending direction is controlled. It supposed to be, so that the mounting accuracy of the vehicle body of the vehicle body structural member is secured sufficiently good.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an aluminum extruded shape member for bending a car body structural member according to the present invention will be described below with reference to the drawings.

Embodiment 1 FIG. 1 shows a first embodiment in which a bending aluminum extruded profile 1 of a battery frame 101 (that is, to a vehicle body structural member) to be bent is a vehicle body mounting surface. And a wall 2 that is horizontal to the bending direction indicated by the arrow A and a wall 3 that is adjacent to the wall 2 and is perpendicular to the bending direction. It is an extruded aluminum profile.

This easily deformable portion 4 is formed by extruding the aluminum material 1.
Has a stepped corner that is concave inside the hollow part, and the stepped corner is formed by a partial vertical wall 5 and a partial horizontal wall 6, and the partial vertical wall 5 is thin. It has a stepped shape.

Next, the operation will be described. The partial vertical portion 5 is thin between the wall 2 which is the mounting surface of the vehicle body and is horizontal to the bending direction and the adjacent wall 3 which is perpendicular to the bending direction. Bending an aluminum extruded profile 1 having a cross-sectional shape having a plurality of hollow portions having stepped corners easily deformable 4 having a concave shape by a bending method such as the rotary drawing bending method shown in FIG. 3, for example. I do.

At this time, the wall 2 which becomes the mounting surface of the vehicle body and is horizontal to the bending direction has a section VIII-VIII in FIG.
As shown in FIG. 4, the rotary draw bending mold 11 is constrained with a certain clearance.

On the other hand, the wall 3 which is perpendicular to the bending direction is constrained by the cored bar 12 from the inside of the hollow portion. Since this cored bar 12 is fixed, the cored bar 12 is fixed as the bending process progresses. It moves relative to the aluminum extruded profile 1 which is the work, and is removed from the hollow portion of the aluminum extruded profile 1.

That is, the wall 3 that is perpendicular to the bending direction is unconstrained, and the wall 3 that is perpendicular to the bending direction in the cross section of the bent portion is deformed and curved inside the hollow portion as shown in FIG. It becomes the wall 3a.

On the other hand, the wall 2 which becomes the mounting surface of the vehicle body and is horizontal to the bending direction has a certain clearance, but is constrained by the rotary drawing bending die 11, so that the wall 3 which is at a right angle to the bending direction. The effect of the deformed curved wall 3a is
Easy-to-deform part 4 of the stepped corner where the partial vertical wall 5 is thin.
Therefore, the wall 2 that is parallel to the bending direction is not affected by the deformation.

Therefore, it becomes possible to perform the bending process while ensuring the surface accuracy of the wall 2 which is the mounting surface of the vehicle body and is horizontal to the bending direction.

Next, the effect will be described with reference to a concrete example of this embodiment. The dimensions H, B, L, t ₁ , t ₂ , M, N, t in the extruded profile 1 shown in FIG. ₃ is the dimension shown in the column of the invention shape in Table 1, and the dimensions H, B, L, t ₁ and t ₂ in the extruded shape member 107 shown in FIG. 3 and FIG. 4, when the bending process is performed with the rotary drawing bending die 11, the walls 2 and 112 that are the vehicle body mounting surface and are horizontal to the bending direction.
Similarly, as shown in Table 1, the deformation amount of 3 was as large as 3.0 mm in the case of the conventional shape, but was as small as 0.5 mm in the case of the invention shape.

[0026]

[Table 1]

In the above embodiment, the case where the partial vertical wall 5 is formed in the easily deformable portion 4 having a thin wall is shown. However, in addition to this, the partial horizontal wall 6 or both the partial vertical wall 5 and the partial horizontal wall 6 are provided. The same effect can be obtained even if is the easily deformable portion 4 of the stepped corner portion having a thin wall.

Alternatively, the shape of the easily deformable portion 4 is shown in FIG.
As in the aluminum extruded shape member 21 shown in FIG. 4, the easily deformable portion 24 is formed of a thin curved wall 27 that is concave toward the inside of the hollow portion, or, as shown in FIG. 6, a thin wall that is convex toward the outside of the hollow portion. The same effect can be obtained as the easily deformable portion 24 including the curved wall 28.

Alternatively, the aluminum extruded shape member 31 shown in FIG.
As described above, the same effect can be obtained by using the thin-walled inclined wall 35 or the easily deformable portion 34 formed of a part of the thin-walled inclined wall (35).

Further, an aluminum extruded shape member 41 shown in FIG.
As described above, a portion near the corners of the wall 42 that is horizontal to the bending direction is thinned to form the easily deformable portion 44 including the thin partial horizontal wall 46, or the aluminum extruded shape member 51 shown in FIG. As described above, the same effect can be obtained even when the part of the wall thickness in the vicinity of the corner of the wall 53 that is perpendicular to the bending direction is thinned to form the deformable part 54 including the thin partial vertical wall 55.

Further, when there is a sufficient space in the vehicle body space, considering the tightening space of the mounting bolt 105 with the cross member 104 of the vehicle body 103, as shown in FIG.
As in the aluminum extruded shape members 61 and 71 shown in FIG. 11, a part of the wall 63 that is perpendicular to the bending direction as shown in FIG. 10 or a part of the wall 72 that is horizontal to the bending direction as shown in FIG. Partial thin walled portion 65 that is convex outside the hollow portion,
Deformable portions 64, 74 consisting of stepped corners having 75
Also, the same effect can be obtained.

The easily deformable portion described above is the easily deformable portion provided with the thin portion so as to maximize the effect of reducing the deformation of the wall which becomes the vehicle body mounting surface and is horizontal to the bending direction. With regard to the easily deformable portions of the curved portion and the curved portion, a similar effect can be obtained even if a stepped corner portion having no thin wall portion or an easily deformable portion of a curved wall having no thin wall portion is provided.

In this embodiment, the rotary drawing bending method is used as the bending method, but other bending methods such as the press bending method, the tensile bending method, the compression bending method, and the multi-vendor method can be used. You may use.

Embodiment 2 FIG. 12 shows a second embodiment of an aluminum extruded shape member for bending on a vehicle body structural member according to the present invention, which is a vehicle body mounting surface and is bent as shown in the drawing. Direction extruded profile 81 having a cross-sectional shape having a plurality of hollow portions each having a wall 82 that is parallel to the horizontal direction and a wall 83 that is adjacent to the wall and that is perpendicular to the bending direction and that is formed by an equal wall slope wall 88. .

When this aluminum extruded shape member 81 is bent by the above-mentioned rotary drawing bending method or the like, the wall 83 which is perpendicular to the bending direction in the cross section of the bending part is formed as shown in FIG.
As shown in FIG. 5, the curved wall 83a is deformed to the inside of the hollow portion. Then, this deformation is caused by the wall 83 which is perpendicular to the bending direction.
Is transmitted to the corner portion 86 of the adjacent equal-walled inclined wall 88, and since the corner portion 86 is generally higher in rigidity than the wall portion, the corner portion 86 rotates while maintaining its shape, and becomes a wall perpendicular to the bending direction. 83
The deformation (formation of the curved wall 83a) is transmitted to the equal-thickness inclined wall 88, and the equal-thickness inclined wall 88 is deformed to the outside of the hollow portion to become the inclined curved wall 88a.

Next, the deformation of the inclined curved wall 88a becomes a vehicle body mounting surface adjacent to the uniform wall thickness wall 88, and the vehicle body mounting surface is similarly subjected to the corner portion 87 of the wall 82 which is horizontal with respect to the bending direction. Wall 82 which is adjacent to and is horizontal to the bending direction
Transmitted to.

That is, the deformation of the wall 82 which becomes the vehicle body mounting surface and is horizontal to the bending direction appears as a curved wall 82a which is concave inside the hollow portion.

Since the curved wall 82a is formed only by the bending process by this deformation, the vehicle body 10 can be formed by other straight parts.
When the third frame 3 is attached to the cross member 104, the battery frame 101 can be attached with high accuracy without being affected by the formation of the curved portion 82a.

Embodiment 3 In this embodiment, as shown in FIG. 14, a wall 92, which is a mounting surface for other parts and is horizontal to the bending direction, and a wall 93 which is adjacent to the wall and is perpendicular to the bending direction, has a concave shape. Stepped portion 9
5, 95, and an aluminum extruded shape member 91 having a cross-sectional configuration in which ribs 96 are provided so as to connect the stepped portions 95, 95 substantially at the center thereof to the stepped portions 95, 95 at right angles.

When this aluminum extruded shape member 91 is bent by the above-mentioned rotary drawing bending method or the like, the wall 93 which is perpendicular to the bending direction is a rib provided substantially at the center of the facing stepped portion 95. At 96, the deformation is divided and the deformation becomes small. Then, the reduced deformation is infinitely reduced by the concave stepped portion 95. That is, the wall 9 that is the vehicle body mounting surface and is horizontal to the bending direction via the corner portion 97
The deformation transmitted to 2 is infinitely small.

On the other hand, as described above, the wall 92, which becomes the vehicle body mounting surface and is horizontal to the bending direction, is bent through the corners 92 when being bent while being restrained by the rotary draw bending die 11. The small deformations transmitted to the wall 92, which becomes the mounting surface and is horizontal to the bending direction, are mostly controlled.

Therefore, the wall 92, which becomes the vehicle body mounting surface and is horizontal to the bending direction, can be bent while ensuring the surface accuracy.

Next, the effect will be described with reference to a specific example of this embodiment. The extruded shape member 91 shown in FIG.
The dimensions H, L, B, P, Q, t ₄ , t ₅ and t ₆ in Table 2 are shown in the column of the invention shape in Table 2, and the dimensions H, L, B and P in the extruded profile of the conventional example are shown. As the dimensions shown in the column of the conventional shape of No. 2, when the bending process is performed by the rotary drawing bending die 11 shown in FIGS. 3 and 4, the deformation amount of the wall which is the mounting surface of the vehicle body and is horizontal with the bending direction is also shown in the table. As shown in FIG. 2, the conventional shape had a large value of 3.0 mm, while the inventive shape had a relatively small value of 0.3 mm.

[0044]

[Table 2]

In this embodiment, the facing stepped portions 95 have a concave shape, but they may have a convex shape, or one may have a concave stepped portion and the other has a convex stepped portion. As a result, a similar effect can be obtained by providing a cross section in which a rib is formed so that the substantially central portion of each stepped portion is orthogonally connected to the stepped portion.

[0046]

As described in claim 1, the aluminum extruded profile for bending a vehicle body structural member according to the present invention is an aluminum extruded profile having a rectangular cross section having one or a plurality of hollow portions. In the cross-sectional shape of the aluminum extruded profile for bending into a structural member made of timber, the deformation of the wall part that is perpendicular to the bending direction between the wall that is perpendicular to the bending direction and the wall that is horizontal to the bending direction. Since the structure is provided with a deformable portion that absorbs, when bending the extruded aluminum profile, the body mounting surface that is transmitted from the wall that is perpendicular to the bending direction through the corner of the profile Since it is possible to use an aluminum extruded shape member having a cross-sectional structure that prevents the deformation of the wall that is horizontal to the bending direction and that is convex toward the outside of the hollow portion, the vehicle body structural member made of this aluminum extruded shape member can be used. Sufficient installation accuracy Leads to significantly better effect that it is possible to secure a good thing.

In an embodiment of the extruded aluminum profile for bending a vehicle body structural member according to the present invention, as described in claim 2, the easily deformable portion has a wall perpendicular to the bending direction. 4. At least one or both of the wall that is horizontal with the bending direction is a stepped shape that is partially thin, or the thin stepped shape is a thin stepped shape other than the right-angled stepped shape. As described in claim 4, the easily deformable portion has a thin-walled curved shape that is recessed inside the hollow portion or bulged outside the hollow portion, or has a partially thin-walled curved shape. To
The easily deformable portion may have a shape of a thin-walled inclined wall or a part of a thin-walled inclined wall, or as described in claim 5, the easily deformable portion may have a wall thickness of at least one side of the corner-neighboring wall portion. Deformation of the wall section that is at a right angle to the bending direction between the wall that is at a right angle to the bending direction and the wall that becomes the vehicle body mounting surface and is horizontal to the bending direction by making the thickness partly thin. Since it is possible to adopt a cross-sectional structure provided with an easily deformable portion that absorbs the deformation, it is possible to prevent the deformation of the wall that is perpendicular to the bending direction from being transmitted to the wall that is the vehicle body mounting surface and is horizontal to the bending direction. Therefore, the easily deformable portion is absorbed, and the accuracy of attachment to the vehicle body can be made sufficiently good.

According to the sixth aspect of the present invention, there is provided an aluminum extruded profile for bending a vehicle body structural member, wherein the aluminum extruded profile for bending has a cross-sectional shape as follows.
Since a wall that is a mounting surface for other parts and is horizontal to the bending direction and a wall that is horizontal to this bending direction and a wall that is adjacent to the bending direction and is adjacent to each other are provided with inclined walls,
Since a wall that is a mounting surface of the vehicle body and is horizontal to the bending direction and a wall that is adjacent to the wall and is perpendicular to the bending direction can have a cross-sectional shape that is formed by an inclined wall, transmission is performed via the inclined wall. The deformation of the wall that is perpendicular to the bending direction can be a deformation that is concave inside the hollow portion in the wall that becomes the vehicle body mounting surface and is horizontal to the bending direction. It is possible to secure sufficient mounting accuracy.

Further, the aluminum extruded profile for bending of a vehicle body structural member according to the present invention has the same cross-sectional shape as the aluminum extruded profile for bending as compared with other parts. A stepped portion having a concave shape or a convex shape is provided on a wall which is a mounting surface and is horizontal to the bending direction and adjacent to the wall which is perpendicular to the bending direction, and the stepped portion is provided substantially at the center of the opposite stepped portion. Since the ribs that are orthogonally connected to each other are provided, a stepped portion having a concave shape or a convex shape is provided on each wall that is perpendicular to the bending direction facing each other, and the stepped portion is formed substantially at the center of the facing stepped portion. Since it is possible to provide ribs that are orthogonally connected to each other, it is possible to make the deformation of the wall that is perpendicular to the bending direction as small as possible, and to be the vehicle body mounting surface and horizontal to the bending direction. Little deformation transmitted to it becomes possible to control, excellent effect that the mounting accuracy becomes possible to secure a sufficiently good to the vehicle body in the vehicle body structural member is provided.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an aluminum extruded shape member showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a cross-sectional deformation in a bent portion of the extruded aluminum shape member of the first embodiment.

FIG. 3 is an explanatory diagram showing an outline of a rotary drawing bending method.

4 is an explanatory diagram showing a cross section VIII-VIII in FIG. 3. FIG.

FIG. 5 is an explanatory diagram of a case where the easily deformable portion of the first embodiment has a concave thin curved shape.

FIG. 6 is an explanatory diagram of a case where the easily deformable portion of the first embodiment has a convex thin curved shape.

FIG. 7 is an explanatory diagram when the easily deformable portion of the first embodiment has a thin-walled inclined wall shape.

FIG. 8 is an explanatory diagram of a case where the easily deformable portion of the first embodiment has a thin portion horizontal wall shape with walls parallel to the bending direction.

FIG. 9 is an explanatory view of a case where the easily deformable portion of the first embodiment has a thin-walled vertical wall shape with a wall perpendicular to the bending direction.

FIG. 10 is an explanatory diagram of a case where the easily deformable portion of the first embodiment has a partially thin stepped shape in which a wall that is perpendicular to the bending direction is convex toward the outside of the hollow portion.

FIG. 11 is an explanatory diagram of a case where the easily deformable portion of the first embodiment has a partially thin stepped shape in which a wall that is horizontal to the bending direction is convex toward the outside of the hollow portion.

FIG. 12 is a cross-sectional view of an aluminum extruded shape member showing a second embodiment.

FIG. 13 is an explanatory view showing a cross-sectional deformation in a bent portion of the extruded aluminum shape material of the second embodiment.

FIG. 14 is a cross-sectional view of an aluminum extruded shape member showing a third embodiment.

FIG. 15 is a perspective view showing an overall shape of a battery frame.

FIG. 16 is an explanatory diagram showing the positional relationship between the vehicle body and the battery frame.

FIG. 17 is an explanatory view showing a mounting portion of a cross member of a vehicle body and an extruded aluminum frame member of a battery frame.

FIG. 18 is an explanatory view showing a cross-sectional deformation of a bending portion of a conventional aluminum extruded shape member.

[Explanation of symbols]

1, 21, 31, 41, 51, 61, 71, 81, 91
Aluminum extruded profiles Aluminum extruded profiles for bending into car body structural members 2, 22, 32, 42, 52, 62, 72, 82, 92
Wall 3, 23, 33, 43, 53, 63, 73, 83, 93 which is a mounting surface of the vehicle body and is horizontal to the bending direction
Walls that are perpendicular to the bending direction 4,24,34,44,54,64,74 Deformable parts 5,55 Partial vertical walls 6,46 Partial horizontal walls 27,28 Thin curved walls 35 Thin inclined walls 65,75 Part Thin-walled part 88 Equal-walled inclined wall 95 Stepped part 96 Rib

Claims (7)

[Claims] 1. A wall and a bending direction perpendicular to a bending direction in a cross-sectional shape of an aluminum extruded profile for bending a vehicle body structural member made of an aluminum extruded profile having a square cross section having one or a plurality of hollow portions. An aluminum extruded profile for bending into a vehicle body structural member, characterized in that an easily deformable portion for absorbing deformation of a wall portion perpendicular to the bending direction is provided between the horizontal wall and the horizontal wall. 2. The easily deformable portion has a stepped shape in which at least one or both of a wall that is perpendicular to the bending direction and a wall that is horizontal to the bending direction are partially thin, or the thin stepped shape is a right angled step. The extruded aluminum profile for bending a vehicle body structural member according to claim 1, which has a thin stepped shape other than the attached shape. 3. The vehicle body structural member according to claim 1, wherein the easily deformable portion has a thin-walled curved shape that is recessed inside the hollow portion or bulged outwardly of the hollow portion or a partially thin-walled curved shape. Aluminum extruded profile for bending. 4. The extruded aluminum profile for bending into a vehicle body structural member according to claim 1, wherein the easily deformable portion has a thin-walled inclined wall shape or a partially thin-walled inclined wall shape. 5. The aluminum for bending into a vehicle body structural member according to claim 1, wherein the easily deformable portion is such that at least one side wall of the corner portion near wall portion has a partially thin wall thickness. Extruded profile. 6. In a cross-sectional shape of an aluminum extruded profile for bending, a wall which is a mounting surface for other parts and is horizontal to the bending direction, and a wall which is horizontal to the bending direction and is adjacent to the bending direction are perpendicular to each other. An aluminum extruded profile for bending into a vehicle body structural member, characterized in that an inclined wall is provided between the wall and the wall. 7. In the cross-sectional shape of the extruded aluminum profile for bending, a wall that is a mounting surface for other parts and that is horizontal to the bending direction and adjacent to the wall that is perpendicular to the bending direction has a concave shape or a convex shape. An aluminum extruded profile for bending into a vehicle body structural member, characterized in that a stepped portion is provided, and a rib that is orthogonally connected to the stepped portion is provided substantially at the center of the opposing stepped portion.