JP2007062453A - Pillar structure for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pillar structure for an automobile with enhanced strength of a side surface part. <P>SOLUTION: A high strength member 36 is arranged between a front surface part 24 of an outer 22 constituting a pillar body 18 and a second front surface part 32 of a first pillar reinforce 28. Similarly, a high strength member 38 is also arranged between a rear surface part 26 of the outer 22 and a second rear surface part 34 of the first pillar reinforce 28. The high strength members 36, 38 are constituted by two sheets of parallel plates 40; and a connection member 42 for connecting the parallel plates each other between these parallel plates 40 and strength of outside surface deformation is enhanced. Thereby, buckling strength of the front surface part 24 and the rear surface part 26 is enhanced and bending strength of the whole pillar is also enhanced. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an automobile pillar structure.

  Various structures have been proposed for automobile pillars in order to suppress deformation caused by external forces. For example, Patent Document 1 discloses a center pillar structure including a center pillar reinforcing member formed of outer reinforcement and inner reinforcement in the center pillar.

Incidentally, in an actual automobile pillar structure, it is desired to further improve the strength of the side surface of the pillar body.
JP-A-4-297378

  In view of the above-described facts, an object of the present invention is to obtain a pillar structure for an automobile having improved side surface strength.

  According to the first aspect of the present invention, the pillar main body having a side part that forms a part of the vehicle body and has a component facing toward the front or the rear of the vehicle body, and a side part that has higher strength than the side part. And a high-strength member disposed along the line.

  Thus, the strength of the side surface portion can be improved as a whole pillar by arranging the high-strength member having higher strength than the side surface portion of the pillar main body along the side surface portion. For example, the strength of the side surface portion of the entire pillar is higher than that of a configuration in which members having the same strength as the side surface portion of the pillar main body are arranged along the side surface portion.

  Note that “having a component facing the front or rear of the vehicle body” with respect to the side surface portion excludes a target surface that is completely oriented in the vehicle width direction. Even if it is a surface that is inclined and faces the front side or the rear side, it is included.

  The invention according to claim 2 is the invention according to claim 1, further comprising a reinforcement provided in the pillar main body and having a side part facing the side part. .

  By arranging the reinforcement including the second side surface portion parallel to the side surface portion in the pillar main body, the strength of the side surface portion of the entire pillar can be further increased.

  According to a third aspect of the present invention, in the second aspect of the present invention, the high-strength member is disposed between the side surface portion and the second side surface portion.

  Thus, by arranging the high-strength member between the side surface portion and the second side surface portion, the side surface portion of the entire pillar can be effectively reinforced by these three members.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the high-strength member is sandwiched between the side surface portion and the second side surface portion.

  By sandwiching the high-strength member between the side surface portion and the second side surface portion, the high-strength member can be fixed without using strong adhesion or the like.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the high-strength member is a plurality of parallel plates arranged in parallel with the side surface portion, and the parallel. And a connecting member that connects the parallel plates between the plates.

  In the high-strength member having such a structure, the connecting member that connects the parallel plates has a component in the normal direction of the parallel plates. For this reason, the high-strength member is more easily deformed in the plane. That is, since the buckling strength of the side surface of the pillar is improved, the bending strength of the entire pillar is improved.

  The invention according to claim 6 is characterized in that, in the invention according to claim 5, the connecting member is formed so as to have a component in the normal direction of the parallel plate between the two parallel plates. To do.

  Thus, by forming the connecting member to have a component in the normal direction of the parallel plate, the parallel plate can be connected with a simple configuration, and the out-of-plane strength of the high-strength member can be reliably increased.

  Since the present invention is configured as described above, it is possible to obtain an automobile pillar structure with improved strength of the side surface.

  FIG. 1 partially shows a vehicle body 12 in which a vehicle pillar structure (hereinafter simply referred to as “pillar structure”) 14 according to an embodiment of the present invention is employed. FIG. 2 shows a cross section of the pillar 16 having the pillar structure 14. In the present embodiment, a center pillar will be particularly described. However, the pillar to which the present invention is applicable is not limited to the center pillar. In the drawings, the front side of the vehicle is indicated by an arrow FR, the upper side is indicated by an arrow UP, and the outer side in the vehicle width direction is indicated by an arrow OUT.

  The pillar 16 has a pillar main body 18 configured by joining two members of an inner 20 disposed on the vehicle interior side and an outer 22 disposed on the vehicle exterior side. In the example shown in FIG. 2, the inner 20 is formed in a substantially flat plate shape, and the outer 22 is formed in a substantially U-shaped cross section that protrudes outward in the vehicle width direction. And it becomes the pillar main body 18 which has a substantially trapezoidal hollow cross section in a joining state. A part of the outer 22 constitutes a front surface portion 24 that obliquely opposes the vehicle front side and a rear surface portion 26 that obliquely opposes the vehicle rear side.

  A first pillar reinforcement 28 is disposed in the pillar 16. The first pillar reinforcement 28 is formed in a substantially U-shaped cross section so as to be arranged along the inner side of the outer 22, and both end portions 30 in the vehicle front-rear direction are sandwiched between the outer 22 and the inner 20. Yes. Further, a part of the first pillar reinforcement 28 constitutes a second front surface portion 32 that faces in parallel with the front surface portion 24 of the outer 22 and a second rear surface portion 34 that also faces in parallel with the rear surface portion 26 of the outer 22. Has been.

  A high-strength member 36 is disposed between the front part 24 and the second front part 32, and is sandwiched between the front part 24 and the second front part 32. Similarly, a high-strength member 38 is disposed between the rear surface portion 26 and the second rear surface portion 34, and is sandwiched between the rear surface portion 26 and the second rear surface portion 34.

  The high-strength members 36 and 38 include two parallel plates 40 that are parallel to each other and a connecting member 42 that connects the parallel plates 40 between the parallel plates 40. Particularly in the present embodiment, the connecting member 42 has a fence shape as viewed in the cross section shown in FIG. 2 (the connecting member 42 as a whole is, for example, a lattice shape or a honeycomb shape when viewed in the normal direction of the parallel plate 40). ing. And by arrange | positioning the high intensity | strength member 36, the front surface part 24 and the rear surface part 26 are each reinforced.

  Next, the operation of the pillar structure 14 of the present embodiment will be described.

  In the pillar structure 14 of the present embodiment, as described above, the high-strength members 36 and 38 are disposed, so that the front surface portion 24 and the rear surface portion 26 are reinforced, and the side surface portions 16A and 16B of the pillar 16 are reinforced. The buckling strength is effectively improved.

  Here, considering the front surface portion 24 and the rear surface portion 26 (further, a general steel plate or the like), the in-plane deformation has higher strength than the out-of-plane deformation. Here, “out-of-plane deformation” means that the plate-like object is deformed by protruding from its surface (strictly, a surface extending from the plate-like object to the periphery), and “in-plane deformation” It means staying inside the surface and deforming.

  In the high-strength members 36 and 38 according to the present embodiment, as described above, since the connecting member 42 has a component in the normal direction of the parallel plate 40, compared to the case of the parallel plate 40 alone, In particular, the strength of out-of-plane deformation is high. Therefore, when an external force is applied to the high-strength members 36 and 38, the external force can be applied so as to generate in-plane deformation as compared with the configuration in which the strength of the out-of-plane deformation is not improved. . However, since the strength of in-plane deformation is inherently high, the overall strength of the high-strength members 36 and 38 is increased.

  As described above, the high strength members 36 and 38 having increased out-of-plane strength are disposed along the front surface portion 24 and the rear surface portion 26, so that the buckling strength (anti-buckling load) of the side surface portions 16A and 16B of the pillar 16 is increased. Has also improved. Thereby, the bending strength of the pillar 16 is also improved.

  The configuration for attaching the high-strength member 36 along the front surface portion 24 or the rear surface portion 26 is not particularly limited. For example, the types of welding (spot welding, arc welding, laser welding, etc.) to the front surface portion 24 and the rear surface portion 26 are different. In addition to (not limited to), adhesion by an adhesive can be mentioned. In particular, as described above, if the high-strength member 36 is sandwiched between the front surface portion 24 and the second front surface portion 32 and the rear surface portion 26 is sandwiched between the second rear surface portions 34, it is necessary to perform strong welding or adhesion. Since it disappears, it is preferable. Instead of welding or bonding, for example, it is also possible to use a foam filler.

  FIG. 2 is a sectional view showing a pillar 56 to which the pillar structure 54 according to the second embodiment of the present invention is applied. In the following embodiments, the same components and members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the second embodiment, the pillar body 58 of a type whose cross-sectional shape changes in a complicated manner in the vertical direction is an application target. Thus, in the pillar 56 whose cross-sectional shape changes in a complicated manner, the shapes of the front surface portion 64 and the rear surface portion 66 also change in a complicated manner. Therefore, if a high-strength member is molded in accordance with this, there is a possibility that a lot of costs may be required. is there.

  Therefore, in the second embodiment, with respect to the first pillar reinforcement 68 disposed between the inner 60 and the outer 62, the second front surface portion 72 is separated from the front surface portion 64 of the outer 62 (the front surface portion 24 has a complicated shape. Even if it changes, it arrange | positions in the simple shape, for example, the position which can be made into a substantially flat surface, without being influenced by the change. Similarly, the second rear surface portion 74 is also disposed at a position away from the rear surface portion 66 of the outer 62.

  The high-strength members 76 and 78 according to the second embodiment are arranged along the second front surface portion 64 and the second rear surface portion 66 formed in a substantially planar shape in this way, so that the high-strength members 76, Since 78 can be formed in a substantially flat shape without forming it into a complicated shape, the cost is reduced.

  Moreover, since the high strength members 76 and 78 are substantially flat without being deformed in advance, the original buckling strength can be exhibited. Since the buckling strength of the side surface portions 56A and 56B of the pillar 56 can be improved by using the in-plane deformation of the high-strength members 76 and 78 more effectively, the bending of the pillar 56 can be bent. Strength can be improved.

  Thus, the arrangement position of the high-strength member is not particularly limited as long as it is a position along the front side surface portion or the rear side surface portion of the pillar. In the configuration in which the high-strength members 36 and 38 are disposed between the front surface portion 24 and the second front surface portion 32 and between the rear surface portion 26 and the second rear side surface portion, respectively, as in the first embodiment, With the three members of the second front surface portion 32 and the high-strength member 36, and the three members of the rear surface portion 26, the second rear surface portion 34, and the high-strength member 38, the side surface portion of the entire pillar 16 can be effectively reinforced. .

  Further, the specific configuration of the high-strength member is not limited to the above-described one. Thus, if the strength is higher than the side surface portions (front side surface portion and rear side surface portion) of the pillar body, the bending strength of the pillar is increased. Can be improved. In the pillar structure 114 of the modified example of the first embodiment shown in FIG. 5, the two parallel plates 40 having the same configuration as the first embodiment are used as the high-strength members 116 and 118 by the connecting member 120 formed in a wave shape. The connecting structure has a corrugated board-like cross section (the parallel plate 40 corresponds to the liner, and the connecting member 120 corresponds to the center rod). Even with such high-strength members 116 and 118, since the connecting member 120 has a component in the normal direction of the parallel plate 40, the strength of out-of-plane deformation is increased and can be applied to the present invention. However, in the cross-sectional view shown in the first embodiment, the parallel plate 40 can be connected with a simple configuration, and the out-of-plane strength of the high-strength member can be reliably increased. it can.

It is a side view which shows partially the vehicle body provided with the pillar to which the pillar structure of this invention is applied. It is a schematic sectional drawing which shows the pillar to which the pillar structure of 1st Embodiment of this invention was applied. It is a schematic sectional drawing which shows the pillar to which the pillar structure of 2nd Embodiment of this invention was applied. It is a schematic sectional drawing which shows the pillar to which the pillar structure of the modification of 1st Embodiment of this invention was applied.

Explanation of symbols

12 Car body 14 Pillar structure 16 Pillar 18 Pillar body 24 Front surface (side surface)
26 Rear surface (side surface)
28 1st pillar reinforcement 32 2nd front part (2nd side part)
34 Second rear surface portion (second side surface portion)
36 High strength member 38 High strength member 40 Parallel plate 42 Connecting member 54 Pillar structure 56 Pillar 58 Pillar body 64 Front surface (side surface)
66 Rear side (side)
68 1st pillar reinforcement 72 2nd front part (2nd side part)
74 Second rear surface portion (second side surface portion)
76 High strength member 78 High strength member 114 Pillar structure 116 High strength member 118 High strength member 120 Connecting member

Claims (6)

A pillar main body having a side part that forms a part of the vehicle body and has a component facing toward the front or rear of the vehicle body;
A high-strength member that is higher in strength than the side surface and is disposed along the side surface;
A pillar structure of an automobile characterized by comprising: Reinforcement provided in the pillar body and having a side surface facing the side surface,
The vehicle pillar structure according to claim 1, further comprising:   The automobile pillar structure according to claim 2, wherein the high-strength member is disposed between the side surface portion and the second side surface portion.   The automobile pillar structure according to claim 3, wherein the high-strength member is sandwiched between the side surface portion and the second side surface portion. The high-strength member is
A plurality of parallel plates arranged in parallel with the side surface,
A connecting member that connects the parallel plates between the parallel plates;
5. The automobile pillar structure according to claim 1, comprising:   6. The automobile pillar structure according to claim 5, wherein the connecting member is formed to have a component in a normal direction of the parallel plate between the two parallel plates.

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