JP2007210441A - Energy absorbing material and transportation equipment with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an energy absorbing material of structure capable of remarkably reducing the peak load to be generated by a collision even in the case wherein transportation equipment collides with an obstacle. <P>SOLUTION: The energy absorbing material comprises a wall surface member in a central area in the longitudinal direction and a wall surface member in an end area in the longitudinal direction. The wall surface member in the central area in the longitudinal direction is structured of an outside surface plate 210b, an inside surface plate 210a provided inside the outside surface plate and formed with a space on the inner peripheral side thereof, and a plurality of rib members 220 arranged between the outside surface plate and the inside surface plate so as to connect them to each other. The wall surface member in the end area in the longitudinal direction is structured of an outside surface plate, which is formed with a common space with the inner space, on the inner peripheral side thereof, and a plate member for closing the space formed on the inner peripheral side is arranged in the wall surface member formed with the energy absorbing material in the end area in the longitudinal direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an energy absorbing material that absorbs energy generated by a collision when colliding with an object, and a transportation device such as a vehicle including the energy absorbing material.

  In transportation equipment represented by railway vehicles, road vehicles, etc., there is a possibility that an unexpected collision with an object may occur during operation. For this reason, even if a vehicle collides with an object, a part of the structure of the transport equipment is actively deformed in order to protect passengers / passengers on the transport equipment from the impact of the collision with the object. There is a concept that absorbs the energy of the collision by doing so.

  In other words, a space (hereinafter referred to as a survival zone) intended to prevent the structure of the transportation equipment from collapsing when an occupant / passenger is in collision with the object, and a structure of the transportation equipment at the time of collision with the object. It is a concept that a space (hereinafter referred to as a “crushable zone”) that positively deforms and absorbs the energy of collision is separated and provided in the structure of the transportation equipment.

  Taking a railway vehicle as an example, the crushable zone can be classified into two structures, an energy absorption structure mainly due to a collision and a beam structure. The energy absorbing structure is a structure that absorbs most of the energy of the collision that acts on the vehicle body at the time of collision, and is mainly composed of an energy absorbing material. The beam structure is a structure that supports an energy absorbing structure or an interior structure attached to the crushable zone.

  Patent Document 1 discloses a technique for efficiently absorbing collision energy by using an annealed aluminum alloy hollow extruded shape as an energy absorbing material that absorbs collision energy when a railway vehicle collides with an obstacle. ing.

JP 2004-168218 A

  In the energy absorbing material disclosed in Patent Document 1, assuming that the transportation device collides with an obstacle during traveling, a high peak load is generated when the energy absorbing material starts to deform during the collision. That is, when the transportation equipment collides with an obstacle, the load acting on the transportation equipment has a high peak load immediately after contact with the obstacle starts, and thereafter, a load as large as the peak load does not occur, but the transportation equipment. As the vehicle travels, the energy absorbing material is crushed by the load acting on the transportation equipment. In the energy absorbing material having such characteristics, the higher the peak load generated at the start of contact with the obstacle, the higher the deceleration. Therefore, it is necessary to reduce the deceleration acting due to the collision to protect the passengers and passengers. There is.

  An object of the present invention is to provide an energy absorbing material having a structure capable of greatly reducing the peak load caused by a collision even when the transportation device collides with an obstacle, and a transportation device including the energy absorbing material. is there.

  The energy absorbing material of the present invention includes a wall member in the longitudinal central region forming the energy absorbing material, an inner side plate that is installed inside the outer side plate and the outer side plate, and that forms a space on the inner peripheral side thereof, and these outer side plates. The wall member of the longitudinal direction end part region which is arranged between the inner side plate and the inner side plate and connects the two is formed, and is shared with the space part on the inner peripheral side thereof. A plate member for closing the space portion formed on the inner peripheral side is provided on the wall surface member in the longitudinal direction end region forming the energy absorbing material.

  In the energy absorbing material of the present invention, the longitudinal wall surface member that forms the energy absorbing material is constituted by an outer face plate that forms a space portion on the inner peripheral side thereof, and the longitudinal end region in which the energy absorbing material is formed. A notch is formed in the outer side plate that is the wall member of the wall, and a plate member that closes the space portion formed on the inner peripheral side is installed on the wall surface member in the longitudinal direction end region forming the energy absorbing material. Features.

  ADVANTAGE OF THE INVENTION According to this invention, even if it is a case where transportation equipment collides with an obstacle, the transportation equipment provided with the energy absorption material of the structure which can reduce the peak load produced by collision significantly, and an energy absorption material is realizable.

  Next, an energy absorbing material and a transportation device according to an embodiment of the present invention will be described with reference to the drawings.

  An embodiment in which the present invention is applied to a railway vehicle structure will be described with reference to FIGS.

  FIG. 1 is a perspective view showing the structure of a railway vehicle structure according to a first embodiment of the present invention. In FIG. 1, a railway vehicle structure 1 includes a roof structure 2 disposed along the longitudinal direction of a railway vehicle body that forms a roof of the railway vehicle, and surfaces that are closed at both ends with respect to the longitudinal direction of the railway vehicle body. , A side structure 4 that is disposed along the longitudinal direction of the railway vehicle to form left and right side surfaces, and a longitudinal direction of the railway vehicle that forms the floor of the railway vehicle. It is comprised from the base frame 5 arrange | positioned.

  Side beams 6 are disposed along the longitudinal direction of the vehicle body of the railway vehicle at the lowermost part of each of the left and right side structures 4 and at both ends of the underframe 5. The left and right side structures 4 are each formed with a window 13 and an opening 14 at the entrance.

  The rail vehicle structure 1 having such a basic structure includes a survival zone 10 that protects the lives of passengers and passengers in the event of a collision with an obstacle, and a crushable zone 11 that absorbs the collision energy generated when the vehicle collides with an obstacle. It is divided and configured.

  The survival zone 10 is installed in the center in the longitudinal direction of the vehicle constituting the railway vehicle structure 1. The crashable zone 11 is installed at both ends in the longitudinal direction of the vehicle constituting the railway vehicle structure 1 and is arranged so as to sandwich the survival zone 10 from both sides. In this figure, the structure is described using a vehicle that does not have a driver's cab. However, the basic structure of the railway vehicle structure 1 and the relative arrangement of the crushable zone 11 and the survival zone 10 are different even in a vehicle having a driver's cab. Absent.

  FIG. 2 is a vehicle having a driver's cab, and shows a side view of the crushable zone 11 installed at the longitudinal end portion of the vehicle of the railway vehicle structure 1. As main members constituting the crashable zone 11, the beam member 40, the cab floor 50, the outer plate 60, and the energy absorbing material 100 can be exemplified.

  In the crushable zone 11 having the driver's cab, a window 70 for the driver to confirm the front in the traveling direction of the vehicle is disposed so as to be located from the center in the height direction to the upper portion at the tip of the vehicle. Yes. In the figure, a structure in which the shape of the front end portion of the railway vehicle is a rounded curved surface is shown as an example. However, even if the front end portion of the vehicle has a substantially planar shape, the present embodiment similarly applies. Applicable.

  The beam member 40 that is a structure constituting the crashable zone 11 is disposed along the side surfaces on both sides and the roof side at the tip of the railway vehicle, and the cab floor 50 on which the cab is installed is the vehicle cab. This is a floor at the tip, and is disposed at a position higher than the cab floor 50 of the vehicle in the survival zone 10.

  The beam member 40 and the cab floor 50 correspond to the strength and vibration generated during normal operation of the entire crushable zone 11. That is, it has a structure that can sufficiently withstand the mass of the driver and driving operation equipment and the vibration acting during normal operation.

  The outer plate 60 is attached so as to cover the crushable zone 11 at the front end portion of the railway vehicle except for the window 70, and lowers the appearance of the vehicle and the wind pressure during traveling, and has almost no influence on the behavior at the time of collision of the vehicle. Does not affect.

  A plurality of energy absorbing materials 100 extending to the crushable zone 11 are installed at the ends of the frame 5 that form the floor of the survival zone 10 of the railway vehicle in the vehicle longitudinal direction. The energy absorbing material 100 is disposed so as to be positioned below the cab floor 50 located at a position higher than the vehicle frame 5. Here, regarding the floor height of the driver's cab, there is no problem at all in applying the present embodiment regardless of the relative height with the frame 5.

  The energy absorbing material 100 includes an energy absorbing material 100a positioned in the front and disposed on both sides near the side of the vehicle along the longitudinal direction of the vehicle, and an energy absorbing material 100b positioned behind the energy absorbing material 100a. The energy absorbing material 100a and the energy absorbing material 100b are connected to each other. In the two energy absorbing materials 100a and 100b, if the survival zone 10 is considered as the root, the outer cross-sectional area of the energy absorbing material 100b on the base side is larger than the outer cross-sectional area of the energy absorbing material 100a on the tip side. It is formed to be large, and the cocoon has an external shape like a bamboo shoot or telescopic telescope. What is necessary is just to determine suitably the length of the vehicle longitudinal direction of each energy absorber 100a, 100b.

  The energy absorbing material 100 provided with the energy absorbing material 100a and the energy absorbing material 100b and the beam member 40 are connected so as not to constrain each other's deformation when the vehicle collides. That is, the energy absorber 100 and the beam member 40 are installed without being coupled to each other, or are arranged with a sufficiently weak coupling structure in view of the strength of the crushable zone 11 of the vehicle, and the vehicle collides. It is a coupled state that does not restrict the deformation of each other.

  The connection relationship between the energy absorbing material 100 including the energy absorbing materials 100a and 100b and the cab floor 50 is also restrained from deformation when the vehicle collides, similarly to the connection between the energy absorbing material 100 and the beam member 40. It is a connected relationship that does not. That is, the energy absorbing material 100b behind the energy absorbing material 100 is connected to the survival zone 10 or the crushable zone 11 by a jig 105 by welding or bolts. The energy absorber 100b and the jig 105 are firmly connected to each other using welding, bolts, or the like.

  The front end portion of the energy absorbing material 100a which is the front end portion of the energy absorbing material 100 in the longitudinal direction of the vehicle has a structure that is not substantially connected to other members. That is, the energy absorbing material 100 is not connected so as to greatly change the entire deformation mode, as in the case where the energy absorbing material is crushed by itself when the vehicle collides.

  In other words, the connection of the energy absorbing material 100 that has an effect during normal operation of the vehicle or whose deformation mode hardly changes at the time of a vehicle collision has the same effect as the embodiment of the present invention.

  FIG. 3 shows a front view of the cab portion of the vehicle shown in FIG. 2 as viewed from the traveling direction of the vehicle along the longitudinal direction of the vehicle, which is the rail arrangement direction. In FIG. 3, most of the entire vehicle is covered with an outer plate 60, and a window 70 exists from the front central part to the upper part of the front end of the vehicle. In the crushable zone 11, the energy absorbing material 100 composed of the energy absorbing material 100 a and the energy absorbing material 100 b, the cab floor 50, and the beam member 40 exist on the inner side covered with the outer plate 60. ing. The driver's cab floor 50 exists at a position higher than the frame 5 and the two energy absorbing members 100 arranged in a pair are installed symmetrically on the left and right sides near the side of the vehicle in the width direction of the vehicle. Has been.

  FIG. 4 is a top view of the cab portion of the vehicle shown in FIGS. 2 and 3 as viewed from above. In FIG. 4, the entire vehicle is covered with an outer plate 60, and a window 70 exists in front of the front end of the vehicle. In the crushable zone 11, the energy absorbing material 100 composed of the energy absorbing material 100 a and the energy absorbing material 100 b, the cab floor 50, and the beam member 40 exist on the inner side covered with the outer plate 60. ing. The width in the sleeper direction perpendicular to the rail of the cab floor 50 and the length in the rail direction are approximately the same dimensions as the crushable zone 11. The beam portion 40 is arranged in a form along the inside of the outer shell of the crushable zone 11. The outer plate 60 is connected to the beam member 40 by welding or the like.

  The energy absorbing material 100 is installed in a symmetrical position in pairs on the left and right sides near the side of the vehicle in the width direction of the vehicle. The energy absorbing members 100 arranged on both the left and right sides extend from the longitudinal end of the vehicle in the survival zone 10 serving as a boundary with the crushable zone 11 where the energy absorbing member 100 is installed to the tip of the energy absorbing member 100. Are the same size. That is, as can be understood from FIG. 3 and FIG. 4, the energy absorbing material 100 installed in a symmetrical position has substantially the same size and shape.

  FIG. 5 is a perspective view of the energy absorbing material 100 including the front energy absorbing material 100a and the rear energy absorbing material 100b according to the embodiment of the present invention described in FIGS. It is. In FIG. 5, a rectangular parallelepiped-shaped energy absorbing material 100a and energy absorbing material 100b constituting the energy absorbing material 100 are covered with four sides on the upper surface, the lower surface, and both side surfaces of the energy absorbing material 100a to form a space portion. The hollow extruded shape member 120a and the cover plate 110a which is the longitudinal end surface of the energy absorbing material 100a closing the space portion, and the upper, lower and both sides of the energy absorbing material 100b are covered so that the inside is a space portion. The hollow extruded shape member 120b and the blocking plate 110b on the end surface in the longitudinal direction of the energy absorbing member 100b blocking the space are respectively formed. The cover plate 110a and the hollow extruded shape member 120a, and the cover plate 110b and the hollow extruded shape member 120b member are firmly connected by a joining method such as welding.

  The vehicle end side end of the energy absorbing material 100a is connected to the cover plate 110a by welding or the like. The hollow extruded shape member 120a constituting the front energy absorbing member 100a is firmly connected to the cover plate 110b forming a part of the rear energy absorbing member 100b, and the cover plate 110b is connected to the energy absorbing member 100b. It is firmly connected to the hollow extruded shape member 120b that constitutes it. The area of the cover plate 110a is formed to be larger than the external lateral area of the hollow extruded profile 120a to be connected, and the hollow extruded profile 120b and the hollow extruded profile 120a are connected to each other. The area of the above-mentioned cover plate 110b is formed so as to be larger than the external lateral area of the hollow extruded profile 120a and the hollow extruded profile 120b to be connected.

  The reason why the cover plate 110b of the cover plate 110a and the cover plate 110b is formed to have a larger area than the outer lateral area of the hollow extruded shape member 120a and the hollow extruded shape member 120b as described above is that the vehicle is obstructed. Even when a load caused by a collision with an object acts on the energy absorbing members 100a and 100b, the hollow extruded shape member 120a of the energy absorbing member 100a is received by dispersing and receiving the load by the hollow extruded member 120b having a large area. This is to prevent the hollow extruded shape member 120b of the energy absorbing material 100b from being bent in the middle when it receives a load due to collision.

  FIG. 6 is a perspective sectional view of the hollow extruded shape member 120a or the hollow extruded shape member 120b constituting the energy absorbing material 100 having a rectangular parallelepiped shape which is the energy absorbing material 100 or the energy absorbing material 100b. In FIG. 6, the energy absorbing material 100a or 100b is constituted by a hollow extruded shape member 120a or 120b in which four sides of the upper surface, the lower surface, and both side surfaces are covered with a plate-like member. The inside of the hollow extruded shape member 120a or 120b surrounded by is a space.

  FIG. 7 shows a cross-sectional view of the hollow extruded shape member 120a or the hollow extruded shape member 120b constituting the energy absorbing material 100a or the energy absorbing material 100b. The plate member constituting the hollow extruded profile 120a or the wall member of the hollow extruded profile 120b includes two outer side plates 210b and an inner side plate 210a arranged substantially in parallel, and these The inner side plate 210a and the outer side plate 210b are constituted by a plurality of ribs 220 arranged obliquely to connect each other.

  As for the shape of the cross section in the width direction of the space surrounded by the rib 220, the inner side plate 210 a and the outer side plate 210 b, the rib 220 is disposed obliquely so as to form a triangular space 230. The material of the rib 220, the inner side surface plate 210a, and the outer side surface plate 210b forming the hollow extruded shape member 120a or the hollow extruded shape member 120b is formed of a light alloy such as an aluminum alloy that can be injection molded.

  The arrangement direction of the ribs 220 is not particularly limited as long as it forms a space surrounded by the ribs 220 and the inner side plate 210a and the outer side plate 210b.

  FIG. 8 shows a schematic structure of an energy absorbing material 100a or energy absorbing material 100b which is an energy absorbing material 100 according to an embodiment of the present invention.

  9 and 10 show cross-sectional views of the AA cross section and the B-B cross section of the hollow extruded profile 120b constituting the energy absorbing material 100b shown in FIG. 8, respectively. 8 to 10, since the cross-sectional structure of the hollow extruded shape member 120a constituting the energy absorbing material 100a is basically the same as that of the energy absorbing material 100b, the description of the energy absorbing material 100a will be omitted. Only the energy absorbing material 100b will be described.

  FIG. 9 shows a cross-sectional view of a hollow extruded shape member 120b that constitutes a general portion that is a region in the middle in the longitudinal direction of the energy absorbing material 100b in the AA cross section of FIG. FIG. 10 is a cross-sectional view of a hollow extruded shape member 120b that constitutes a portion close to the cover plate 110b, which is a region in the longitudinal direction end portion of the energy absorbing material 100b in the BB cross section of FIG.

  In the AA cross section of FIG. 8 shown in FIG. 9, the cross-sectional shape of the wall member forming the hollow extruded shape member 120b is as follows: the outer side plate 210b constituting the outer outer wall surface, and the inner side plate 210a constituting the inner inner wall surface. In addition, the outer side plate 210b and the inner side plate 210a are constituted by ribs 220 arranged obliquely to connect each other. The structure of these wall members is the same as the cross-sectional shape of the wall members formed during extrusion molding for manufacturing the wall members.

  In the BB cross section of FIG. 8 shown in FIG. 10, the cross-sectional shape of the wall surface member forming the hollow extruded shape member 120b is constituted only by the outer side plate 210b constituting the outer outer wall surface. In the cross section BB, the inner side surface plate 210a and the rib 220 constituting the inner inner wall surface existing in the cross section AA are removed and do not exist. For this reason, the connection between the cover plate 110b and the hollow extruded shape member 120b has a structure in which only the face plate 210b constituting the outer outer wall surface serving as the wall member of the hollow extruded shape member 120b is connected to the cover plate 110b. . In FIG. 10, the positions of the removed inner side surface plate 210a and ribs 220 are indicated by dotted lines for reference.

  11 and 12, which will be described later, the longitudinal direction of the hollow extruded shape member 120b of the energy absorbing member 100b formed by extrusion molding having the same sectional shape as the sectional shape of the energy absorbing member 100b shown in FIG. The intermediate portion in the direction will be referred to as a general cross section 250 for explanation. On the other hand, the longitudinal direction end portion of the hollow extruded shape member 120b from which the face plate 210a and the ribs 220 having the same cross-sectional shape as the cross-sectional shape in the cross-section BB of the energy absorbing material 100b will be described as a processed cross-sectional portion 260.

  FIG. 11 is a side view of the energy absorbing member 100b, and shows a cross-sectional area when the energy absorbing member 100b starts to be deformed by a collision that is a region in the middle portion in the longitudinal direction of the hollow extruded member 120b constituting the energy absorbing member 100b. Shows the region of the general cross-sectional portion 250 that is uniform in the longitudinal direction and the range of the processed cross-sectional portion 260 that is the region of the end portion in the longitudinal direction. The processing cross section 260 is provided in a region adjacent to the cover plate 110b and the jig 105 of the energy absorbing material 100b. The general cross-sectional portion 250 is provided in a region not adjacent to the cover plate 110b and the jig 105, and becomes a region in which the wrinkles are also sandwiched between the processed cross-sectional portions 260 in the hollow extruded shape member 120b of the energy absorbing material 100b. The ratio of the length of the processed cross section 260 and the general cross section 250 may be set to an appropriate value depending on the purpose.

  FIG. 12 is a perspective view of a rectangular parallelepiped energy absorbing member 100b. In the processed cross section 260 which is a longitudinal end portion of the hollow extruded member 120b constituting the energy absorbing member 100b, the outer face plate 210b of the hollow extruded member 120b. Only the inner side plate 210a and the rib 220 are omitted.

  In the configuration of the energy absorbing material 100b shown in FIGS. 11 and 12, the machined cross section 260 that is the longitudinal end of the hollow extruded profile 120b is a general cross section that is the middle in the longitudinal direction of the hollow extruded profile 120b. Compared to 250, the cross-sectional area of the hollow extruded profile 120b is reduced. For this reason, if the energy absorbing material 100b starts to be deformed by a load that acts when the vehicle collides with an obstacle, the deformation first occurs in the hollow extruded shape member 120b in the region of the processed cross-section 260 having a small cross-sectional area. Arise. Since the structure of the hollow extruded shape member 120b in the region of the processed cross section 260 is composed of only one plate which is the outer face plate 210b, the load at which the hollow extruded shape member 120b starts to deform can be reduced. it can.

  That is, since the wall surface member of the hollow extruded shape member 120b in the region of the general cross section 250, which is the middle portion in the longitudinal direction of the hollow extruded shape member 120b, has a complicated sectional shape, the wall surface member having these complicated sectional shapes is used. Since each member of the outer side plate 210b, the inner side plate 210a and the rib 220 bears a load acting on each other, the load required to deform the hollow extruded shape member 120b must be increased.

  On the other hand, as described above, in the hollow extruded shape member 120b in the region of the processed cross section 260 which is the longitudinal end portion of the hollow extruded shape member 120b, the wall surface member is constituted only by the outer side face plate 210b of one plate. Therefore, the load at which the hollow extruded shape member 120b starts to be deformed can be reduced.

  This situation is represented by a characteristic diagram schematically showing the relationship between the amount of collapse of the energy absorbing material shown in FIG. 15 and the load acting on the transport vehicle. In FIG. 15, if the transportation vehicle collides with an obstacle and a load due to the collision acts on the transportation vehicle and the energy absorbing member 100b starts to deform, the hollow extruded shape member 120b of the general cross section 250 starts to deform. The hollow extruded shape member 120b in the region of the processed cross section 260 starts to be deformed with a smaller load than that. As a result, in the energy absorbing material 100b of the present embodiment, the peak load generated by the collision has a characteristic that the peak load immediately after the collision is low as shown by the solid line, and the hollow extruded profile 120b shown by the broken line extends over the entire length. Thus, the peak load generated by the collision can be suppressed to a low value as compared with the peak load caused by the energy absorbing material formed only by the general cross section 250.

  Therefore, according to the above-described embodiment, even if the transportation device collides with an obstacle, the energy absorbing material and the transportation device that can significantly reduce the peak load caused by the collision by the energy absorbing material having the above configuration. Can be realized.

  Further, in the hollow extruded shape member 120b in the region of the processed cross section 260, welding deformation is caused by welding that firmly connects the cover plate 110 or the jig 105 and the hollow extruded shape member 120b. Due to the initial deformation caused by the above, the load at which the hollow extruded shape member 120b starts to deform is further reduced.

  As is clear from the above-described reason, the load at which the hollow extruded shape member 120b starts to deform in the region of the processed cross-sectional portion 260, which is the longitudinal end portion of the hollow extruded shape member 120b, becomes small. FIG. 15 shows the peak load that acts on the vehicle body that acts when the energy absorbing materials 100a and 100b start to be deformed by the load caused by the collision, even when the load due to the collision acts on the energy absorbing materials 100a and 100b. Further, it is possible to reduce the energy absorbing material collapse amount as shown in the characteristic diagram of the load acting on the transportation vehicle.

  In the above embodiment, the structure of the wall member of the hollow extruded profile 120b in the region of the processed cross-section 260, which is the longitudinal end of the hollow extruded profile 120b, is the intermediate portion in the longitudinal direction of the hollow extruded profile 120b. The example of the structure of only the outer side plate 210b in which the inner side plate 210a and the rib 220 are deleted from the structure of the wall surface member of the hollow extruded profile 120b in the region of the cross section 250 is shown, but the rib 220, the inner side plate 210a, and the outer side plate 220b are shown. Equivalent effects can be obtained by deleting any one member or two members in combination as appropriate.

  FIG. 13 shows an energy absorbing material 100b according to a second embodiment of the present invention, and shows a perspective cross-sectional view of a hollow extruded shape member 120b constituting the energy absorbing material 100b of this embodiment.

  In FIG. 13, the hollow extruded shape member 120b constituting the rectangular parallelepiped energy absorbing member 100b includes an outer side plate 210b, an inner side plate 210a, and a plurality of ribs 220 connecting the outer side plate 210b and the inner side plate 210a. Is formed by. A space portion is formed inside the energy absorbing material 100b, and a cover plate 110b or a jig 105 is attached to the longitudinal end portion of the energy absorbing material 100b that closes the space portion. is doing. In the region of the middle portion in the longitudinal direction of the hollow extruded shape member 120b constituting the energy absorbing material 100b, when the energy absorbing material 100b starts to be deformed by a collision, the cross-sectional area is uniform in the longitudinal direction. An area is formed, and an area of the processed cross section 260 is formed in the area of the longitudinal end portion of the hollow extruded shape member 120b.

  The region of the longitudinal end portion of the outer side plate 210b constituting the outer surface of the hollow extruded shape member 200b, which is the portion adjacent to the jig 105 or the cover plate 105 of the hollow extruded shape member 200b, or the inner side plate 210a and the rib from the outer side plate 210b. In the region of the processed cross-sectional portion 260, which is the region of the longitudinal end portion of the hollow extruded shape member 200b extending to 220, the plate thickness is set so that the cross-sectional area becomes small when the energy absorbing material 100b starts to deform due to a collision. A common notch 270 is formed so as to have the same projected area in the direction.

  In the energy absorbing material 100b of the embodiment having the above-described configuration, the energy absorbing material 100b in the cross section including the notch portion 270 in which the outer side face plate 210b, the inner side face plate 210a, and the rib 220 are cut out in the region of the processed cross section 260. The cross-sectional area at the end in the longitudinal direction is smaller than the cross-sectional area of the general cross-section 250, which is the region in the middle in the longitudinal direction of the hollow extruded profile 120b. The deformation can be controlled to start from the portion of the cross section including the notch 270.

  As a result, also in the above-described embodiment, if the transportation device collides with an obstacle, the energy absorbing material having the above configuration acts on the vehicle body that works when the energy absorbing material 100b starts to deform due to the load caused by the collision. Since the peak load to be reduced can be reduced as shown in the characteristic diagram of the amount of collapse of the energy absorbing material and the load acting on the transport vehicle shown in FIG. 15, the energy that can greatly reduce the peak load caused by the collision. There exists an effect that an absorber and transportation equipment are realizable.

  FIG. 14 shows an energy absorbing material 100b according to a third embodiment of the present invention, and shows a perspective view of a hollow extruded shape member 120b constituting the energy absorbing material 100b of this embodiment.

  In FIG. 14, the hollow extruded shape member 120b2 constituting the rectangular parallelepiped energy absorbing member 100b is formed only by the outer face plate 210b constituting the outer face. A space portion is formed inside the outer face plate 210b, and a cover plate 110b or a jig 105 is attached to a longitudinal end portion of the energy absorbing material 100b that closes the space portion.

  In the energy absorbing material 100b of the embodiment having the above-described configuration, the processing includes the outer face plate 210b serving as the region of the processing cross section 260 and the notch 270 in which a part of the end portion in the longitudinal direction of the outer face plate 210b is notched. The cross-sectional area of the longitudinal end portion of the energy absorbing material 100b in the cross section in the region of the cross-sectional portion 260 is further compared with the cross-sectional area of the general cross-sectional portion 250 that is the region in the longitudinal intermediate portion of the hollow extruded shape member 120b. When it becomes smaller and collides with an obstacle, the deformation can be controlled to start from the cross section including the notch 270 in the region of the processed cross section 260. Further, since the cross-sectional area is small in the region of the processed cross section 260, the peak load at the start of crushing can be reduced.

  As a result, also in the above-described embodiment, if the transportation device collides with an obstacle, the energy absorbing material having the above configuration acts on the vehicle body that works when the energy absorbing material 100b starts to deform due to the load caused by the collision. Since the peak load to be reduced can be reduced as shown in the characteristic diagram of the amount of collapse of the energy absorbing material and the load acting on the transport vehicle shown in FIG. 15, the energy that can greatly reduce the peak load caused by the collision. There exists an effect that an absorber and transportation equipment are realizable.

  The present invention is applicable to an energy absorbing material and a transportation device including the energy absorbing material.

The perspective view which shows the structure of the railway vehicle structure which is one Example of this invention. The side view which shows the crushable zone installed in the vehicle longitudinal direction edge part of the railway vehicle structure which is one Example of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The front view seen from the advancing direction of the vehicle which shows the railway vehicle structure which is one Example of this invention. The top view which looked at the cab part of the vehicle of the railway vehicle structure which is one Example of this invention shown in FIG. 3 from upper direction. The perspective view of the energy absorption material installed in the railway vehicle structure which is one Example of this invention. FIG. 6 is a perspective sectional view of an energy absorbing material according to an embodiment of the present invention shown in FIG. 5. FIG. 7 is an enlarged cross-sectional view of a hollow extruded shape constituting an energy absorbing material according to an embodiment of the present invention shown in FIG. 6. The side view which shows the whole structure of the energy absorption material which is one Example of this invention. FIG. 9 is an AA cross-sectional view of the energy absorbing material shown in FIG. 8 which is an embodiment of the present invention. BB sectional drawing of the energy absorber shown in FIG. 8 which is one Example of this invention. The external view which showed along the longitudinal direction the energy absorber which is one Example of this invention shown in FIG. FIG. 7 is a perspective view of a hollow extruded profile constituting the energy absorbing material according to the embodiment of the present invention shown in FIG. 6. The perspective view which shows the energy absorber which is the other Example of this invention. The perspective view which shows the energy absorber which is further another Example of this invention. The characteristic view which showed typically the relationship between the load which acts on a vehicle body at the time of a collision, and the amount of crushing which arises in an energy absorption material.

Explanation of symbols

  1: Railcar structure, 2: Roof structure, 3: Wife structure, 4: Side structure, 5: Underframe, 6: Side beam, 10: Survival zone, 11: Crashable zone, 40: Beam member, 50: Driving Base plate, 60: outer plate, 70: window, 100, 100a, 100b: energy absorbing material, 105: jig, 110a, 110b: cover plate, 120a, 120b, 120b2: hollow extruded profile, 210a: inner side plate, 210b 210b: outer face plate, 220: rib, 230: nodal point, 250: general cross section, 260: processed cross section.

Claims (6)

  A wall member in the central region in the longitudinal direction that forms the energy absorbing material is disposed between the outer side plate and the inner side plate that is installed inside the outer side plate and forms a space on the inner peripheral side thereof, and the outer side plate and the inner side plate. The wall member of the longitudinal direction end part region which is formed by a plurality of rib members which are connected to form the energy absorbing material is formed by an outer face plate which forms a space part common to the space part on the inner peripheral side thereof. An energy absorbing material comprising: a plate member configured to close a space portion formed on an inner peripheral side on a wall surface member in a longitudinal end region forming the energy absorbing material.   The wall member in the longitudinal direction that forms the energy absorbing material is constituted by an outer face plate that forms a space on the inner peripheral side thereof, and is cut out in the outer face plate that is the wall surface member in the longitudinal end region forming the energy absorbing material. The energy absorbing material is characterized in that a plate member for closing the space portion formed on the inner peripheral side is installed on the wall surface member in the longitudinal direction end region where the energy absorbing material is formed. 3. The energy absorbing material according to claim 1, wherein an area of the plate member is formed so as to be larger than an outer cross-sectional area of a wall surface member forming the energy absorbing material. .   A wall member in the central region in the longitudinal direction that forms the energy absorbing material is disposed between the outer side plate and the inner side plate that is installed inside the outer side plate and forms a space on the inner peripheral side thereof, and the outer side plate and the inner side plate. The wall member of the longitudinal direction end part region which is formed by a plurality of rib members which are connected to form the energy absorbing material is formed by an outer face plate which forms a space part common to the space part on the inner peripheral side thereof. The energy absorbing material having a plate member for closing the space portion formed on the inner peripheral side is mounted on the transporting equipment on the wall surface member in the longitudinal direction end region forming the energy absorbing material. Transportation equipment equipped with energy absorbing material.   The wall member in the longitudinal direction that forms the energy absorbing material is constituted by an outer face plate that forms a space on the inner peripheral side thereof, and is cut out in the outer face plate that is the wall surface member in the longitudinal end region forming the energy absorbing material. The energy absorbing material in which the plate member that closes the space portion formed on the inner peripheral side is installed on the wall surface member in the longitudinal direction end region forming the energy absorbing material is attached to the transport device. Transportation equipment with a featured energy absorber. In the transport equipment provided with the energy absorbing material according to claim 4 or 5, the area of the plate member is formed so as to be larger than the outer cross-sectional area of the wall surface member forming the energy absorbing material. Transportation equipment equipped with energy absorbing material.

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