[0001]The present invention relates to a shock absorbing member.
BACKGROUND
[0002]Conventionally, for passenger protection of a motor vehicle, the impact absorbing member aiming at the portion which is expected to be located within an automobile and the impact is inputted. Such shock-absorbing member, for example, there is known a door impact bar. For example, Patent Document 1 below, the structure of the door impact bar of a motor vehicle is described.
CITATION
Patent Document
[0003]
Patent Document 1: Laid-Open Publication No. 5-319092
Summary of the Invention
Problems that the Invention is to Solve
[0004]
　However, the impact absorbing member for securing shock absorption comprised of a thick structure. Therefore, the portion disposed in the motor vehicle is limited. In consideration of deformation at the time of collision, by providing the shock-absorbing member as possible to the outside of the vehicle (away from the occupant), because even significant amount of deformation of the shock absorbing member does not contact the occupant, safely and efficiently impact It can be absorbed.
[0005]
　However, since there is no sufficient space in the interior of the outboard motor vehicles, it is difficult to place a thick member.
[0006]
　The present invention has been made in view of the above problems, it is an object of the present invention, even without enough space capable of performing a shock absorbing collision, it is new and improved to provide a shock absorbing member.
Means for Solving the Problems
[0007]
　In order to solve the above problems, according to an aspect of the present invention, it disposed adjacent the exterior materials of automobiles, in a cross section perpendicular to the extending direction, perpendicular to the direction of the height to the outer member is the outer member It comprises a larger member than in the direction of width along the shock absorbing member.
[0008]
　Those comprising a first said member extending in a first direction, the extending in a second direction different from the first direction, and a second of said members crossing the first of said members it may be.
[0009]
　Further, it may be one in which the first said member and a second said member is bonded to the outer package.
[0010]
　Further, at the intersection of the first of said members and a second of said members, the thickness of the perpendicular direction with respect to the outer member of the first of said members and a second of said members may be configured to decrease.
[0011]
　Also, the between the intersection of the first of said members and a second of said members has two first of said members being disposed on the outer material side second of the members disposed on the outer member side 1 of the member and may be one where there is an intersection of the second of said members.
[0012]
　The first of the member or the second of said members may be configured to traverse the exterior material.
[0013]
　Further, in the longitudinal direction of the at least one location of the first of the member or the second of said members, said there is a supported portion that is supported by the outer member opposite the first said member or the second of said members distance of the supported portions and the intersecting portion, the may be within 1/3 of the length of the first said member or the second of said members with the supported portion.
[0014]
　Furthermore, the supported portion may be an end portion of the first said member or the second of said members.
[0015]
　Furthermore, the supported portion may be one that is joined to the other parts other than the outer package.
[0016]
　Moreover, said member is a hollow structure plate member is bent, spaced a first surface adjacent to the outer package, the greater the first surface than the width of said first surface perpendicular to the extending direction a second surface which is positioned, may have a.
[0017]
　Also, the second surface may be one that is divided along the extending direction.
[0018]
　Further, the member may be provided with a martensite structure.
Effect of the invention
[0019]
　According to the present invention described above, even when there is no sufficient space becomes possible to perform the shock absorbing collision.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020]
Is a schematic view showing a state viewed exterior panel from the rear side of the vehicle according to FIG. 1 embodiment.
[Figure 2] A schematic view showing a conventional structure for comparison, is a schematic diagram showing a configuration of the inside of the outer package is a door impact bar and reinforcement disposed.
3 is a schematic diagram showing a variation of the arrangement of the reinforcing member.
4 is a schematic diagram showing a variation of the arrangement of the reinforcing member.
5 is a schematic diagram showing a variation of the arrangement of the reinforcing member.
6 is a schematic diagram showing a variation of the arrangement of the reinforcing member.
7 is a schematic diagram showing a variation of the arrangement of the reinforcing member.
[Figure 8] is a first reinforcing member is disposed in the vertical direction of the outer package is a schematic view showing an outer panel in the horizontal direction second reinforcing member is disposed in the casing 110 (door panel).
It is a schematic view showing a state seen from an arrow A direction of FIG. 9 Fig.
FIG. 10 is a perspective view showing in detail the intersection of the first reinforcing member and the second reinforcing member in FIG.
11 is a perspective view showing in detail the intersection of the first reinforcing member and the second reinforcing member in FIG.
In the configuration of FIG. 12 FIG. 8 is a schematic diagram showing the direction of the cross-sectional configuration perpendicular to the longitudinal direction of the first and second reinforcing members.
For [13] FIGS. 8 and 9 is a characteristic diagram showing the relationship between the applied load and the displacement amount of the indenter 140 obtained by simulation for evaluating the tensile rigidity of the outer panel.
[14] assume the collision side of the vehicle (side collision) is a schematic view showing a state in which given load onto the outer panel load applying member.
In the configuration of FIG. 15 FIG. 8, were obtained by simulation for evaluating the performance of side impact of the outer panel, is a characteristic diagram showing the relationship between the stroke and the load when a load is applied by the load applying member 300 .
To the configuration shown in FIG. 16 FIG. 12 is a schematic diagram showing an example of bending the respective end portions of the plate on the other side.
DESCRIPTION OF THE INVENTION
[0021]
　Reference will now be described in detail preferred embodiments of the present invention. In the specification and the drawings, components having substantially the same function and structure are a repeated explanation thereof by referring to the figures.
[0022]
　First, referring to FIG. 1, the configuration of the automotive exterior panel according to an embodiment of the present invention. Figure 1 is a schematic view showing a state seen an exterior panel 100 of an automobile according to the present embodiment from the back side (inner side of the car). Illustrated here is a door panel as an exterior panel 100, the outer panel 100, fenders, hood, etc. roof may be a panel of other parts of the automobile.
[0023]
　As shown in FIG. 1, the outer panel 100 is composed of a casing 110 reinforcing member 120.. Panel member 112 is constituted of a steel plate of about 0.4mm thick as an example. Casing 110 is the front side is curved so as to be convex. The curvature of the curved is along the vertical direction.
[0024]
　Reinforcement member 120 includes a first reinforcing member 122 disposed in the vertical direction, and a second reinforcing member 124 disposed in the horizontal direction. The first reinforcing member 122 is preferably curved to follow the curvature of the casing 110. The second reinforcing member 124 is extends substantially linearly, when casing 110 is curved, it is desirable that a shape following the curvature. A first reinforcing member 122 second reinforcing member 124, if shape following the outer member 110, in close contact with the casing 110, because preferably be bonded (adhered) to the casing 110 .
[0025]
　Figure 2 is a schematic view showing a conventional structure for comparison. 2, the door impact bar 300 and reinforcement 310 is disposed inside the casing 110. 3 to 7 are views showing a vehicle door panel according to the present embodiment as an exterior panel 100. 3 to 7 are schematic views showing variations of the arrangement of the reinforcing member 120. In the example shown in FIG. 3 shows an example in which only the first reinforcing member 122 disposed vertically to the outer panel 100.
[0026]
　Further, in the example shown in FIG. 4 shows an example in which only the second reinforcing member 124 disposed horizontally on the exterior panel 100. Further, in the example shown in FIG. 5, the first reinforcing member 122 disposed vertically to the outer panel 100, it shows an example in which a second reinforcing member 124 disposed in the horizontal direction. Further, in the example shown in FIG. 6 shows an example in which the radial reinforcing member 120 to the outer panel 100. Further, in the example shown in FIG. 7 shows an example in which intersects the reinforcing member 120 diagonally face panel 100.
[0027]
　Figure 12 is a perspective view showing the configuration of a reinforcing member 120. A first reinforcing member 122 basic configuration of the second reinforcing member 124 may be identical. In Figure 12 also shows cross-sectional configuration perpendicular to the longitudinal direction of the reinforcing member 120. Reinforcing member 120 has a hollow rectangular (oblong) cross-section. The reinforcement member 120 is manufactured by bending a plate member 130. In the example shown in FIG. 12, the reinforcing member 120 is a rectangular cross-sectional shape, one side thereof is a long side of about 16 mm, a short side of about 10 mm. Further, the thickness of the plate material 130 constituting the reinforcing member 120 is 0.8mm approximately as an example. The plate member 130 can be used steel.
[0028]
Figure 12 as shown in, between the end 130a and the end portion 130b of the bent plate member 130 may be provided with a predetermined gap. On the other hand, the end portion 130a and the end portion 130b may be in close contact. The end portion 130a and the end portion 130b may be joined by welding or bonding or the like. Reinforcing member 120 has an end 130a, the surface 130b is positioned or ends 130a,, 130b is opposite to the surface on the surface is located is arranged so as to be in intimate contact with the casing 110. Preferably, the end portion 130a, the surface 130b is positioned or ends 130a,, the opposite surface to the surface on which 130b is located is joined with casing 110. Here, it referred to as surface adjacent or are joined to the casing 110 and the bottom surface. Also refers to the surface opposite to the top surface to the bottom surface. The surface located across the ridge line on both sides of the bottom surface is referred to as a vertical wall. In the cross section of the reinforcing member 120, the short side is the bottom surface, the long sides are vertical wall. In the configuration in which the end portion 130a, 130b is disposed on the top surface without being bonded, in the case where the reinforcing member 120 is pushed from the outer direction of the outer panel 100 is curved, the ends 130a, cross from 130b is opened sectional shape There tends to collapse. However, when the end portion 130a, 130b are joined, it is possible to prevent the cross-sectional shape collapse, it is possible to increase the rigidity of the outer panel 100. End 130a, 130b are disposed on the bottom surface, even if the bottom surface is joined to the casing 110, it is possible to prevent the end portion 130a by casing 110, 130b is away cross section collapses. The cross-sectional configuration of the reinforcing member 120 is not intended to end 130a as shown in FIG. 12, 130b is limited to the structure opposite, for example, the ends 130a, 130b is distant trench (channel) shape or FIG. 16, it may be a hat shape shown in. Rectangular cross-section of the reinforcement member 120, a groove-type, in any of the hat-shaped, the short side of the cross-section perpendicular to the extending direction of the reinforcing member 120 "width (D)", the long side a "height (H ) "and considered. Further, in a hat shape shown in FIG. 16, when placing the flange in the outer member 110 side, of the flange and the vertical wall The distance between ridge between between considered "width (D)". If the angle between the short side and the long side is not perpendicular, the distance between the end portion in the vertical direction of the long side of the short side is regarded as the height. In the reinforcing member according to the present invention, which is defined as "width", "height" is as described above, the height than the width of the reinforcing member is large. For joining reinforcing member 120 to the casing 110 is more desirable greater than the width the height of the reinforcement member 120, dare not to its manner is the present invention. To do so is to give priority to increasing the moment of inertia of against bending of the reinforcing member 120.
[0029]
　As described above, in the present embodiment, the reinforcement member 120 is positioned adjacent to the casing 110, the direction in a cross section perpendicular to the extending direction, the height of the orthogonal direction to the casing 110 is along the casing 110 greater than the width. Thus when a collision load from the vehicle body outer side of the outer panel inward is loaded, because the second moment of the reinforcing member 120 can be effectively improved. Reinforcing member 120, the direction of the second moment perpendicular to the longitudinal direction, 15000 4 may be a lower, more preferably, 12000 mm 4 may be less. So as to satisfy this condition, the material of the plate 130 of the reinforcing member 120, the plate thickness and cross-sectional shape is appropriately set. By satisfying this condition, it increases the plastic buckling limit of the reinforcing member 120, without causing easy plastic buckling when subjected to the input of collision load, the reaction force due to elastic deformation effectively against crashworthiness performance it is possible to take advantage of. Incidentally, the reaction force increment is larger with respect to the reaction force is relatively deformation by elastic deformation, the reaction force increment for deformation in the plastic deformation is small. Therefore, a reaction force by elastic deformation, can be effectively used as an anti-collision performance. Incidentally, easily cause plastic buckling even small bending Larger second moment. In the conventional structure, the second moment of the door impact bars 18000Mm 4 are about, it is assumed that exert anti-collision performance due to plastic deformation. On the other hand, in this embodiment, the reinforcing member 120 is elastically deformed in order to exhibit the anti-collision function, the upper limit of the second moment is set as described above. Accordingly, occurrences of plastic buckling can exhibit crash-resisting capability due to elastic deformation.
[0030]
　By satisfying the above conditions can reinforcing member 120 about the second moment, the outer panel 100 of the present embodiment, it is possible to improve crash-resisting capability. Therefore, the simplification or omission of the conventional anti-collision parts can provide additional weight reduction. In the case of using a conventional anti-collision parts, which can contribute to further improvement of collision safety performance.
[0031]
　Moreover, the yield stress of the reinforcement member 120 may be a higher 500 MPa. This increases the plastic buckling limit of the reinforcement member 120, it is possible to more effectively utilize the reaction force due to elastic deformation, it can be reduced in weight to ensure effectively crashworthiness. The reinforcing member 120 may be provided with a martensite structure. This makes it possible to further improve the impact resistance.
[0032]
　The reinforcing member 120 also consists example thin member, the practical impact absorbing member by crossing. Further, the door impact bar 300 as in the conventional structure is only one, depending on the position where the collision load is applied is likely to misses. Also it leads to significant weight gain when a door impact bar 300 as fruitless measures to a plurality of installation. According to this embodiment, since the light-weight reinforcing member 120 than the conventional can widely deployed on the entire surface of the face panel 100, a miss can be avoided while suppressing the increase in weight. Furthermore, since the first and second reinforcing members 122, 124 are connected as a reinforcing member 120, that a collision load applied to one of the reinforcing member also propagated to the other of the reinforcing member, to absorb the impact with it can.
[0033]
　Furthermore, in the case where the exterior member 110 and the reinforcement member 120 is joined, the reinforcement member 120 when deformation is large reinforcement member 120 at the time of a collision deformation collapsing can be suppressed (rotation), can be further improved crashworthiness performance . Further, it is also effective that the tension is generated in the outer package in the region between the reinforcing member 120 adjacent to the collision deformation. When thinning the casing 110 there is no stiff, (flex) easily recessed but useless shock absorption, by constraining the casing 110 by joining the outer member 110 and the reinforcement member 120, reinforcing member 120 is deformed If, casing 110 around the portion where deformation is pulled in the plane direction. Since casing 110 is that certain tensile strength in the thickness direction of the plane direction even without rigidity to resist deformation of the tension, it is possible to improve the performance of the shock absorbing member.
[0034]
　The reinforcing member 120 is somewhat longer than is placed along the casing 110. Specifically, the reinforcement member 120 is in close contact with the casing 110 at one-third or more regions of the full length. That is, in the present embodiment, the reinforcement member 120 and to suppress the inclination of the reinforcing member 120 by adhesion to bonding the casing 110, further reacted with a tensile force on the casing 110 when the deformation of the casing 110 and crashworthiness function thereby improving the.
[0035]
　In particular, the first reinforcing member 122 is disposed so that the longitudinal direction is the vertical direction along the direction of the curvature of the casing 110. Thus, it is possible to improve crash-resisting capability of the convex curved portion that is curved to protrude toward the outside of the vehicle.
[0036]
　The reinforcing member 120 is configured so as to cross the casing 110 (transverse). In this embodiment, smaller second moment of the reinforcing member 120, the (larger elastic deformation zone) high yield stress. Therefore, for receiving a load or impact upon collision the entire outer panel 100 across member, the reinforcing member 120 is suitably better to as long as possible. Further, since the reinforcing member 120 is configured to traverse the casing 110 can be reinforcing member receives an impact load is enhanced degree of freedom in setting the fulcrum for obtaining a reaction force (the contact point with respect to the conventional other components) . Further, by long as possible reinforcement member 120, it is possible to widen the range to receive the impact during a collision. That is, it is possible to prevent the reinforcing member 120 misses.
[0037]
　In the following, by providing the reinforcement member 120 will be described improvement in crashworthiness features of the exterior panel 100. Figure 8 is a longitudinal direction of the first reinforcing member 122 is disposed so that the vertical direction of the casing 110, the longitudinal direction of the second reinforcing member 124 is arranged so that the horizontal casing 110 a schematic view showing a face panel 100 (door panel) shows in detail the structure of FIG. 9 is a schematic view showing a state seen from an arrow A direction in FIG. 8. 8 shows a state viewed outer panel 100 from the front side (from the outside of the car). FIG. 8 shows the first reinforcing member 122 in a transparent state the casing 110 of the arrangement of the second reinforcing member 124. Further, the indenter 140 shown in FIG. 8, in a simulation to evaluate the tensile rigidity of the outer panel 100 showing the results in Fig. 13 to be described later, it is a member for pressing the outer panel 100.
[0038]
　8, the first reinforcing member 122 is supported by the supporting portion 220 disposed vertically across the face panel 100. The second reinforcing member 124 is supported by the supporting portion 230 disposed horizontally across the face panel 100. More specifically, the first reinforcing member 122 has its both ends are supported by being sandwiched in the support portion 220 and the casing 110. Similarly, second reinforcing member 124 has its both ends are supported by being sandwiched support 230 and the casing 110. Further, in FIG. 8, is supported with the first reinforcing member 122 of the intersection of the second reinforcing member 124, and the vertical direction outside or front-rear direction outside the intersection of the vehicle, by the supporting portion 220 or the support 230 the distance between the supported portion of the first reinforcing member 122 or the second reinforcing member 124 is within 1/3 of the length of the first reinforcing member 122 or the second reinforcing member 124. Thus, when a load caused by the collision is applied to the reinforcing member 120, for example, take the load applied from the intersection to the second reinforcing member 124 to the first reinforcing member 122 is supported by the supporting portion 220 from the intersection since the distance to the supported portion of the first reinforcing member 122 are close, it is possible to receive the load caused by collision efficiently elastically deformed.
[0039]
　8, the first reinforcing member 122 and the recess 122a at the intersection of the second reinforcing member 124, by crossing provided 124a, a first reinforcing member 122 and the second reinforcing member 124 on the same plane It shows an arrangement described example. Further, in FIG. 8, the first reinforcing member 122 is disposed so as braiding the second reinforcing member 124, at the intersection of adjacent, the first reinforcing member 122 is vertical arrangement of the second reinforcing member 124 It is configured differently.
[0040]
　Placing such weaving first and second reinforcing members 122 and 124, the efficiency of load transmission between the first reinforcing member 122 with each other the second reinforcing member 124 is improved. Thus, it is possible by the first and second reinforcing members 122, 124 to ensure effective shock-absorbing function during a collision.
[0041]
　10 and 11 are a perspective view detailing a first reinforcing member 122 in FIG. 8 the intersection of the second reinforcing member 124. Figure 10 corresponds to the cross section C1 shown in FIG. 8, FIG. 11 corresponds to the intersection C2 shown in FIG. The second reinforcing member 124 in the intersecting portions C1 is positioned outwardly of the vehicle (casing 110 side) relative to the first reinforcing member 122. Thus, it can be arranged to weaving first and second reinforcing members 122, 124. Recess 122a is provided on the first reinforcing member 122, by the recess 124a to the second reinforcing member 124 is provided, the first reinforcing member 122 is a second reinforcing member 124 is disposed in the same plane. Further, the intersection C2 is first reinforcing member 122 is positioned outwardly of the vehicle with respect to the second reinforcing member 124. Also at the intersection C2, the recess 122a is provided in a first reinforcing member 122, by the recess 124a to the second reinforcing member 124 is provided, the first reinforcing member 122 is a second reinforcing member 124 flush It is placed in.
[0042]
　Although not shown, first and second reinforcing members 122, 124 need not necessarily be arranged to knitted, the first reinforcing member or the like construction reasons during assembly of the outer panel 100 122 outer panel side all may be arranged to face panel side with respect to all of the second reinforcing member 124, also all of the second reinforcing member 124 in the opposite to all of the first reinforcing member 122 of the to may be arranged.
[0043]
　The direction of the second moment perpendicular to the longitudinal direction of the reinforcing member 120 extending from the intersections 15000 4 are as follows. By providing the intersection, it is possible to shorten the bending fulcrum of deformation imparted to the reinforcing member 120 at the input of the collision load distance of the point, it is possible to further enhance the reaction force increment for the deformation. Thus, by providing the intersection collision performance is improved.
[0044]
　Also, by the intersection between two or more locations, it is possible to further shorten the distance of the fulcrum and the point of application of the bending imparted deformation to the reinforcing member 120 at the input of the collision load, to increase the reaction force increment for the deformation more can. Moreover, since it is possible to receive the impact load is propagated to other of the plurality of reinforcing members 120, it is possible to obtain a higher reaction force. Thus, the collision performance is further improved.
[0045]
　Further, at the intersection, the recess 122a in the first and second reinforcing members 122 and 124, by providing the 124a, the thickness of the direction orthogonal to the first reinforcing member 122 with respect to casing 110 of the second reinforcing member 124 of decreases. Accordingly, even in a region including and neighboring intersections are brought into close contact with the first and second reinforcing members 122, 124 and casing 110 can be joined, it is possible to improve the crashworthiness effectively.
[0046]
　Further, by providing the intersection, so that the first reinforcing member 122 is a second reinforcing member 124 for restraining each other at the crossing. Thus, for example, a cross section of the reinforcement member 120 is rectangular, when the short side is in close contact with the casing 110, close to the casing 110 lying on the reinforcing member 120 is long side occurs upon receipt of an impact that can be suppressed. Further, by arranging so as weaving first and second reinforcing members 122 and 124, it caused collapse the reinforcing member 120 upon receipt of an impact the long side can be prevented from being close to the casing 110. The shorter the distance between the intersection, because the restriction of rotation inhibiting at short intervals is made, first and second reinforcing members 122, 124 is less likely to collapse. Thus, it is possible to suppress the reduction in the cross-sectional secondary moment due to the inclination of the reinforcing member 120 can reduce a decrease in crashworthiness performance.
[0047]
　The impact absorbing member, as the shock absorbing member is not rigid move against a load input direction, it is necessary to be supported on something receives the impact load. Load to be input from the exterior member 110, support portions 220 and 230 for receiving the impact load is provided on the side opposite to the casing 110 of the reinforcing member 120. At that time, load input point (intersection) near the supporting portion 220 and 230 of the reinforcing member 120, it is possible to obtain a high reaction force with less deformation. The support portion 220 and 230, when the outer panel 100 is a door panel, a door inner panel, a front pillar, center pillar, abutting portion corresponds to the side sill or the like. Further, when the outer panel 100 other than the door may support the support portion 220 and 230 in contact with the other body structural material. For example if the roof panel, a roof side rail, a front roof rail, is the site in contact with the rear roof rail and the like corresponding to the supporting portions 220 and 230. Also, the contact of the support portion 220 and 230 to these body structure materials, provided another support parts contact via the supporting component may be supported.
[0048]
　In the reinforcing member 120, a supported portion supported by the support portion 220 and 230 is an end portion of the reinforcing member 120. In this way, by supporting an end portion of the reinforcing member 120, you can take advantage of the entire reinforcement member 120 to the impact absorption. Further, a supported portion that is joined to the other parts other than the outer package, can also be restrained in a direction other than the load input direction the supported portion, the prevention falling of the reinforcement member 120 while improving the crashworthiness it can also contribute. Furthermore, the supported portion may be provided in addition to an end portion of the reinforcing member 120.
[0049]
　12, in the configuration of FIG. 8 is a schematic diagram showing the direction of the cross-sectional configuration perpendicular to the longitudinal direction of the first and second reinforcing members 122, 124. As shown in FIG. 12, the first and second reinforcing members 122, 124 has a rectangular cross-sectional shape, vertical 16mm approximately as an example, it is about the horizontal 10 mm.
[0050]
　In the configuration shown in FIG. 12, the short side of the rectangular cross-sectional shape is in close contact with the casing 110. Thus, in order to ensure the desired cross-sectional second moment, it is possible to constitute a reinforcing member 120 having the most efficient cross-section. On the other hand, increasing the long side in order to ensure the geometrical moment of inertia, the reinforcing member 120 is easily collapses to rotate in the axial direction when an impact. Although the reinforcing member 120 collapses is second moment decreases, by joining a reinforcing member 120 to the casing 110, it is possible to prevent collapsing the (rotation) of the reinforcing member 120.
[0051]
　16, with respect to the configuration shown in FIG. 12 is a schematic diagram showing an example of bending on the opposite side of each end portion 130a and the end portion 130b of the plate 130. Shape of FIG. 16 say the hat shape.
[0052]
　In the structure shown in FIG. 16, the short side of the rectangular cross-sectional shape is in close contact with the casing 110. In this case, the end portion 130a, to 130b may be in close contact with the casing 110 as the bottom surface of the flange side having the end 130a, 103b may be in close contact with the casing 110 as the bottom side opposite the flange side having . Thus, in order to ensure the desired cross-sectional second moment, it is possible to constitute a reinforcing member 120 having the most efficient cross-section. Further, by bonding the reinforcement member 120 to the casing 110, it is possible to suppress collapse of the reinforcing member 120 (rotation).
[0053]
　Next, based on FIGS. 14 and 15, the exterior panel 100 of this embodiment will be described the results of evaluation of the bending strength in consideration of the time of collision. 14, in the configuration of FIG. 8, assume the collision side of the car (the side collision) is a schematic view showing a state in which given load onto the outer panel 100 by the load applying member 300.
[0054]
　15, in the configuration of FIG. 8 is a characteristic diagram showing the relationship between the stroke and the load when a load is applied by the load applying member 300. In Figure 15, in order to evaluate the crashworthiness function, applying a load greater than 13, it shows a case that caused the stroke corresponding to the time of collision. 15, the characteristics shown by the broken line shows the characteristic in the case of evaluating the conventional structure shown in FIG. 2 for comparison under the same conditions. Also, the characteristics shown by the solid line corresponds to the invention Example 1 not bonded to the first reinforcing member 122 and the second reinforcing member 124 to the casing 110, the characteristics indicated by the two-dot chain line and the first reinforcing member 122 second corresponds to the reinforcing member 124 to the invention example 2 was bonded to the casing 110 of the.
[0055]
　As shown in FIG. 15, in the configuration of the invention Example 1, in particular stroke in the case of more than 50 mm, than the conventional structure has a higher load, it was possible to obtain a high shock absorbing performance than the conventional structure. In the configuration of the invention example 2, has a higher load than the conventional structure in substantially the entire stroke, it was possible to obtain a higher shock absorbing capacity than Invention Example 1. In the conventional structure as described above, since it is assumed to cause the impact member such as a door impact bar 300 is plastically deformed, plastic deformation occurs as the stroke increases, the increase rate of the load with increasing stroke invention examples 1, it is lower than the invention example 2. On the other hand, Invention Examples 1 according to this embodiment, the invention example 2, for shock absorption in the range of elastic deformation, the rate of increase in the load due to the increase of the stroke becomes greater than the conventional structure. Therefore, according to the configuration example of FIG. 8, for example, even when the pole side collision etc. utility pole strikes the door panel is generated, it is possible to obtain a sufficient impact-absorbing performance.
[0056]
　Simulation results, according to the configuration of FIG. 8, Inventive Example 1, in any of the inventive example 2 also, the plastic buckling also be a stroke to approximately 75mm did not occur. Therefore, according to this embodiment, it is possible to absorb the impact of a collision the reinforcing member 120 as an elastic member. In Invention Example 1, but temporarily load of about stroke 65mm is reduced, which, by not bonding the reinforcing member 120 to the casing 110, collapse occurs in a part of the reinforcing member 120 It was in order. However, collapse of such reinforcing member 120 by bonding the reinforcing member 120 and the casing 110 as in the invention example 2, or may be provided a cross-section in the reinforcing member 120 as described above, in different directions It can be suppressed by arranging such braiding reinforcing member 120.
[0057]
　Note that the first reinforcing member 122 second reinforcing member 124 may not be separate members, for example, a single steel plate lattice shape and cross-section processed into a thin press-formed article, the first and second reinforcing members 122 and 124 may be integrated. In this case, the portions that are branched become intersection.
[0058]
　Further, casing 110 and the reinforcing member 120 is not limited to steel, it may be configured by a non-ferrous metal such as aluminum. Furthermore, for example, the casing 110 is formed in CFRP, it may be a rib corresponding to the first and second reinforcing members 122, 124 disposed on the back side of the casing 110. In this case, the ribs corresponding to the first and second reinforcing members 122, 124 may be integrally molded. In this case, regarded as intersections of portions (cross-shaped portions) are branched. Furthermore, the ribs corresponding to the first and second reinforcing members 122, 124 may be integrally formed with casing 110, a rib corresponding to the first and second reinforcing members 122, 124 in this case is the outer package deemed to have been joined to the 110.
[0059]
　As described above, according to the reinforcing member 120 of the present embodiment, it is possible to reliably improve the impact performance of the casing 110. Furthermore, according to the reinforcing member 120 of the present embodiment, it is possible to also improve the tensile rigidity of the outer package 110. The following describes the improvement of tensile rigidity by the reinforcing member 120 of the present embodiment.
[0060]
　In this embodiment as described above, the first and second reinforcing members 122, 124 are in contact with the casing 110. Thus, the area of ​​each region surrounded by the contour of the first and second reinforcing members 122, 124, and casing 110 is to become smaller than the area of ​​the entire casing 110, an external force to the exterior member 110 acting since early tension is likely to occur when, it is possible to increase the tensile rigidity of the outer package 110 considerably. Furthermore, it is more preferable to bond the casing 110 and the reinforcing member 120, early tension generated by the exterior material 110 in the region between the reinforcing member 120 adjacent in casing 110 is deformed, more the tensile rigidity it can be further improved.
[0061]
　Moreover, the yield stress of the reinforcing member 120 as described above by the above 500 MPa, it is possible to prevent the plastic deformation even when an external force acts on the reinforcing member 120, effectively ensuring the tensile rigidity it is possible to reduce the weight of Te.
[0062]
　The reinforcing member 120 is somewhat longer than is placed along the casing 110. Specifically, the reinforcement member 120 is in close contact with the casing 110 at one-third or more regions of the full length. By closely arranging the reinforcing member 120 to the casing 110, when the degree of thinning of the outer package 110 is large even (eg thinner from the original thickness 0.7mm to 0.5mm or less), tensile rigidity of the outer panel 100 it is possible to improve. More preferably, by joining in close contact the reinforcing member 120 and the casing 110, by applying a tensile force to the casing 110 during deformation of the casing 110, it is possible to further increase the tensile rigidity of the outer panel 100.
[0063]
　In particular, the first reinforcing member 122 is disposed vertically along the direction of the curvature of the casing 110. Thus, it is possible to improve the tensile rigidity of the curved convex curved portion so as to protrude toward the outside of the vehicle. Further, casing 110 has a concave curve portion curved to protrude toward the inside as viewed from the outside of the vehicle, the reinforcement member 120 overlapping the concave curve portion is in close contact with the casing 110. Concave curve portion than in the convexly curved portion for tensile rigidity against a load from the outside of the car is poor, that closely arranged reinforcing member 120 to the site, it can effectively improve the tensile rigidity of the entire face panel.
[0064]
　The reinforcing member 120, the direction of the second moment perpendicular to the longitudinal direction 15000 4 may be less. By satisfying the above conditions can reinforcing member 120 about the second moment, it can be a reinforcing member 120 with a small cross section, a plurality of arranging the first and second reinforcing members 122, 124 in order to increase the tensile rigidity without incurring a large weight increase even when, the efficiently can be improved tensile rigidity. For even reinforcing member 120 extending from the intersection as illustrated in FIG. 8, similarly, the direction of the second moment perpendicular to the longitudinal direction 15000 4 may be less. When a cross section, the area of the region of the outer package sandwiched reinforcing member 120 extending from the intersection portion is narrower than the area of the face panel entire surface, the ratio of the thickness to the area sandwiched between the reinforcing member 120 is relatively to increase, it is possible to further improve the tensile rigidity. Thus, by providing the intersection, it is possible to effectively improve the tensile rigidity.
[0065]
　Moreover, when the intersection between two or more locations, further narrowing the individual region between the reinforcing member 120 adjacent the casing 110. As a result, the ratio of the thickness to the area of ​​the individual regions is increased relatively, thereby further improving the tensile rigidity. Thus, it is possible to effectively improve the tensile rigidity.
[0066]
　Further, at the intersection, the recess 122a in the first and second reinforcing members 122 and 124, by providing the 124a, the thickness of the direction orthogonal to the first reinforcing member 122 with respect to casing 110 of the second reinforcing member 124 of decreases. This can also be in close contact or joining the first and second reinforcing members 122, 124 and casing 110 in the region including and neighboring intersections, it is possible to effectively improve the tensile rigidity.
[0067]
　13, the 8 and 9, in order to evaluate the tensile rigidity is a characteristic diagram showing the relationship between the applied load and the displacement amount of the indenter 140 obtained by simulation. In the simulation results shown in FIG. 13, when the thickness of the casing 110 is not bonded to the first reinforcing member 122 by 0.4mm the second reinforcing member 124 to the casing 110 (Inventive Example 1, the characteristics indicated by the solid line) If, when joined to the first reinforcing member 122 and the second reinforcing member 124 to the casing 110 shows (Inventive example 2, the characteristics indicated by the two-dot chain line). Further, the simulation results shown in FIG. 13, for comparison, (dashed line) characteristics when the thickness of the casing 110 there is no reinforcing member in 0.7 mm, the reinforcing member in a thickness of the outer package 110 is 0.4mm also shows characteristic (broken line) when there is no.
[0068]
　Exterior materials of general automobiles in use today, that is, the thickness of the outer panel is about 0.7 mm, which corresponds to the characteristic of the chain line. As shown in FIG. 13, the first reinforcing member 122 and the invention Example 2 (two-dot chain line) formed by joining a second reinforcement member 124 to the casing 110, the reinforcing member in 0.7mm thickness of the casing 110 compared with the characteristics in the absence (dashed line), the displacement amount with respect to the applied load is equivalent above results were obtained. In particular, the invention example 2, when the load exceeds 80 [N], the displacement amount with respect to the applied load is significantly reduced than the characteristic of the chain line. Further, the characteristics of the invention Example 1 not bonded to the first reinforcing member 122 and the second reinforcing member 124 to the casing 110 (solid line), the displacement amount with respect to the applied load is slightly greater than the characteristic of the chain line, the applied load there were comparable to properties of one-dot chain line becomes a degree 200 [N]. Therefore, according to this embodiment, even when significantly thinner than the current thickness of the casing 110 as 0.4 mm, can be reliably prevents a tensile rigidity is lowered is there. Thus, it is possible to reduce to a thickness of, for example, 0.4mm approximately casing 110, it is possible to reduce the weight of greatly exterior panel 100.
[0069]
　Further, as shown by the broken line characteristic in FIG. 13, characteristic when the thickness of the casing 110 there is no reinforcing member in 0.4mm is the amount of displacement relative to the applied load is significantly increased in comparison with the other properties there. This indicates that the casing 110 by pressing the outer panel will be largely deformed. Therefore, if the thickness is no reinforcing member in 0.4mm, it is difficult to use as an exterior panel of an automobile.
[0070]
　According to the present embodiment as described above, a plurality of first reinforcing member 122 and a plurality of second reinforcing member 124 is adhered to the casing 110 arranged in a grid pattern, the collision load in the elastic deformation mainly by which is adapted to absorb, it is possible to greatly improve crash-resisting capability. Thus, with achieving weight reduction, it is possible to provide a face panel of a motor vehicle having excellent crashworthiness.
[0071]
　Further, with respect to casing 110 composed of 0.4mm around a thin plate, by in close contact with the casing 110 by disposing the reinforcing member 120, it is possible to enhance the tensile rigidity greatly. Thus, touching the user to constituted the exterior panel 100 of a thin plate, even if the or pressing the outer panel 100 a user is able to reliably suppress the deformation of the outer panel 100.
[0072]
　Having described in detail preferred embodiments of the present invention with reference to the accompanying drawings, the present invention is not limited to such an example. It would be appreciated by those skilled in the relevant field of technology of the present invention, within the scope of the technical idea described in the claims, it is intended to cover various changes and modifications , also such modifications are intended to fall within the technical scope of the present invention.
DESCRIPTION OF SYMBOLS
[0073]
　100 outer panel
　110 exterior material
　120 reinforcing member
　122 first reinforcing member
　124 second reinforcing member

WE CLAIM

Disposed adjacent the exterior materials of automobiles, in a cross section perpendicular to the extending direction, perpendicular to the direction of the height to the outer member comprises a larger member than in the direction of width along the outer package, the shock absorbing member.
[Requested item 2]
　A first of said members extending in a first direction, extend in a second direction different from the first direction, and a second of said members crossing the first of said members, wherein shock absorbing member according to claim 1.
[Requested item 3]
　The first of the member and the second said member is joined to the outer member, the impact-absorbing member according to claim 2.
[Requested item 4]
　At the intersection of the first of said members and a second of said members, the thickness of the first of said members and orthogonal direction with respect to the outer member of the second of said members is reduced, the shock-absorbing member according to claim 3 .
[Requested item 5]
　The first of the member and the first of the second of said members being disposed on the outer member side between the intersection of the second of said members two first said member is disposed in the outer member side the member and the impact absorbing member according to any one of claims 1 to 4, there are intersections of the second of said members.
[Requested item 6]
　The first of the member or the second said member transverse to the outer member, the impact-absorbing member according to any one of claims 1 to 5.
[Requested item 7]
　In the longitudinal direction of the at least one location of the first of the member or the second of said members, said there is a supported portion that is supported by the outer member opposite,
　crossing the first said member or the second of said members Department and the distance of the supported portion, said is within 1/3 of the length of the first said member or the second of said members with the supported portion, according to any one of claims 1 to 6 impact-absorbing member of.
[Requested item 8]
　The supported portion is shock absorbing member according to claim 7 which is an end portion of the first said member or the second of said members.
[Requested item 9]
　The supported portion is joined to the other parts other than the outer member, the impact-absorbing member according to claim 7 or claim 8.
[Requested item 10]
　Said member is a hollow structure plate member is bent, at a distance from the first surface and the first large the first surface than the width of the plane orthogonal to the extending direction adjacent to the outer member has a second surface which is arranged, a shock absorbing member according to any one of claims 1-9.
[Requested item 11]
The second surface is shock-absorbing member according to claim 10 which is divided along the extending direction.
[Requested item 12]
　It said member comprises a martensitic structure, the shock-absorbing member according to any one of claims 1 to 11.