WO2014126183A1 - Elément d'absorption d'énergie - Google Patents

Elément d'absorption d'énergie Download PDF

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Publication number
WO2014126183A1
WO2014126183A1 PCT/JP2014/053414 JP2014053414W WO2014126183A1 WO 2014126183 A1 WO2014126183 A1 WO 2014126183A1 JP 2014053414 W JP2014053414 W JP 2014053414W WO 2014126183 A1 WO2014126183 A1 WO 2014126183A1
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WIPO (PCT)
Prior art keywords
energy absorbing
absorbing member
bulging
shape
energy
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Application number
PCT/JP2014/053414
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English (en)
Japanese (ja)
Inventor
友彦 安田
明成 奈良原
知士 川島
義文 小坂
茂樹 相田
真悟 矢代
道弘 川村
Original Assignee
株式会社深井製作所
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Publication date
Application filed by 株式会社深井製作所 filed Critical 株式会社深井製作所
Publication of WO2014126183A1 publication Critical patent/WO2014126183A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members

Definitions

  • the present invention relates to an energy absorbing member such as a component part of an automobile bumper.
  • the front side member front end and bumper stay of an automobile are formed into a cylindrical shape by providing a plurality of substantially circular projections on the plate surface of a plate-like member such as aluminum or steel, and the axial direction is the front-rear direction.
  • An energy absorbing member provided along the line is known.
  • This energy absorbing member absorbs the collision energy when the automobile collides with another automobile or the like by buckling against the force applied in the cylindrical axial direction.
  • the energy absorbing member is bent with respect to the cylindrical axial direction during buckling, the energy absorption efficiency is deteriorated.
  • it is desirable that the energy absorbing member has sufficient strength.
  • various measures have been devised to improve axial resistance, such as by making it polygonal by a method such as pressing or extrusion, but the strength and behavior at which the cylindrical member buckles and deforms, Since it is determined passively depending on the length, thickness, and material of the wall, the mainstream is one that considers these optimizations.
  • a configuration in which the degree of energy absorption at the time of collision is adjusted by providing a configuration that easily breaks and deforms at an arbitrary location of a cylindrical member.
  • the cylindrical energy absorbing member is formed with a crush bead as a “fragile part” formed in a long concave groove shape along the direction orthogonal to the axial direction and having a thinner plate thickness than other parts.
  • a configuration in which a plurality of buckling beads are configured to be easily deformed by impact from the outside so that the direction and degree of buckling of the energy absorbing member are adjusted for example, Patent Document 1). reference).
  • Patent Document 1 is the same as the structure of the simple cylindrical energy absorbing member except for the place where the crash bead is provided. Therefore, it is difficult to essentially improve the energy absorption efficiency of the energy absorbing member.
  • the invention described in Patent Document 1 in order to improve the energy absorption efficiency, the size and the structure of the energy absorbing member, the specs of the automobile to which the energy absorbing member is attached, etc. It must be manufactured by individually adjusting the arrangement position. Therefore, when manufacturing as a standard product, the degree of energy absorption cannot be adjusted, and when adjusting the size and location of the crash beads individually, there is a problem that the manufacturing cost increases and the manufacturing efficiency decreases. .
  • the present invention has been made in view of the above problems, and has a high energy absorption efficiency, can freely adjust the degree of energy absorption, can suppress an increase in production cost, and can obtain a good production efficiency. It is an issue to provide.
  • the energy absorbing member of the present invention is an energy absorbing member that absorbs collision energy applied in the cylindrical axial direction by buckling, and a plurality of bulging portions are adjacent or close to each other.
  • a cylindrical plate-like member formed in a state where the bulging portion protrudes inward of the cylindrical shape and the outward of the cylindrical shape.
  • the bulging portion is formed in a mixed manner.
  • the plate-like member is formed in a rectangular tube shape including a plurality of side surface portions, and at least one of the side surface portions includes the bulging portion projecting inward of the rectangular tube shape and the It is desirable that the bulging portion protruding outward in the shape of a rectangular tube is formed in a mixed manner.
  • the side surface portion is formed with a plurality of rows in which a plurality of the bulging portions are linearly arranged, and each of the rows protrudes toward the inner side of the tubular shape. It is desirable that only the bulging portion or only the bulging portion protruding toward the outside of the cylindrical shape is formed.
  • the rows are formed along a direction substantially orthogonal to the cylindrical axial direction.
  • the plate-like member is formed with only the bulging portion protruding outward in the cylindrical shape, and the column protruding inward of the cylindrical shape. It is desirable that the rows in which only the bulging portions are formed are alternately formed.
  • a plurality of the rows are formed on each of the side surface portions, and only the bulging portions protruding outward of the cylindrical shape are formed as these rows.
  • One or a plurality of the rows, and one or a plurality of the rows in which only the bulging portions protruding toward the inner side of the cylindrical shape are formed are alternately formed. Is desirable.
  • each of the bulging portions is formed in a polygonal shape in front view having the same outer shape.
  • each of the bulging portions is formed in a regular hexagon when viewed from the front.
  • the bulging portions are formed adjacent to each other without a gap over substantially the entire surface of the plate-like member constituting the energy absorbing member.
  • the energy absorbing member receives an impact by adjusting the shape and size of the bulging portion by forming the bulging portion adjacent to or close to the plate-like member.
  • the buckling state and buckling strength can be adjusted freely so that they are in an appropriate state.
  • the bulging portions are formed adjacent to each other or close to each other, the bulging portions provide high resistance to the impact against external impacts, and can easily be buckled at the boundary between the bulging portions. Become. For this reason, a plate-shaped member can be buckled at a desired location, and an impact can be absorbed with high energy absorption efficiency.
  • the plate-like member is formed with a mixture of a bulging portion that protrudes toward the inside of the cylinder and a bulging portion that protrudes toward the outside of the tube, so that the energy absorbing member It is possible to prevent the bulging parts from interfering with each other when the buckling is buckled, and the energy absorbing member member to be bent and buckled in the axial direction. Thereby, the energy absorption efficiency is high and the energy absorption member which can adjust the degree of energy absorption freely can be provided.
  • At least one side surface portion of the plate-like member formed in a rectangular tube shape has a bulging portion that protrudes inward of the rectangular tube shape and a bulge that protrudes outward in the rectangular tube shape.
  • at least one side surface portion of the energy absorbing member exhibits high resistance against impact energy and buckles the plate-like member at a desired location, thereby absorbing high energy. Impact can be absorbed with efficiency. Further, for each side surface portion, the state of buckling of the plate-like member and the absorption amount of impact energy can be changed.
  • the energy absorbing member can be buckled more evenly along the axial direction while reflecting the location and state of the energy absorbing member and the way in which impact energy is applied. Thereby, it is possible to provide an energy absorbing member that has higher energy absorption efficiency and can freely adjust the degree of energy absorption.
  • the buckling position and the buckling direction of the energy absorbing member can be adjusted with reference to the row in which the bulging portions are arranged.
  • the buckling position and the buckling direction of the energy absorbing member can be adjusted by setting the row where the bulging portions are arranged and the position of the boundary between the rows. For this reason, design and manufacture of an energy absorption member become easy, and it becomes possible to obtain high energy absorption efficiency easily. Thereby, it is possible to provide an energy absorbing member that can be easily designed and manufactured and can absorb an impact with higher energy absorption efficiency.
  • the row in which the bulging portions are arranged is formed along a direction substantially orthogonal to the cylindrical axial direction, so that the row in which the bulging portions are arranged by the impact energy applied in the axial direction.
  • the plate-like member can be buckled without causing the bulging portions to interfere with buckling with reference to the boundary between the rows. And if it buckles on the basis of the row
  • the number of rows in which only the bulging portion protruding outward in the cylindrical shape is continuously formed, and the bulging portion protruding inward of the cylindrical shape
  • each bulging portion in a front view polygon having the same outer shape. Further, when the energy absorbing member is buckled, bending with respect to the cylindrical axial direction is less likely to occur. Furthermore, since each bulge part is the same shape, manufacture is easy. Thereby, an energy absorption member with high energy absorption efficiency can be formed easily.
  • the bulging portion in a substantially hexagonal shape when viewed from the front, the bulging portion is densely packed in the plate-like member, and the honeycomb structure can be easily formed. Therefore, it becomes easy to give a very high resistance to the impact applied in the plate surface direction of the energy absorbing member. Thereby, an energy absorption member with high energy absorption efficiency can be provided more easily.
  • the energy absorbing member is formed over substantially the entire surface so that the bulging portions are adjacent to each other with no gap, so that the energy absorbing member has a high resistance to impact over the entire surface of the energy absorbing member, and the energy absorption efficiency can be easily adjusted. Can be formed. As a result, an energy absorbing member that has high energy absorption efficiency and can freely adjust the degree of energy absorption can be provided more easily.
  • the impact force acting on the bumper at the time of a vehicle collision can be effectively absorbed by the energy absorbing member, and the impact force transmitted to the vehicle body strength member can be reduced as much as possible.
  • FIG. 2 is a partial sectional view taken along line AA in FIG.
  • FIG. 3 is a cross-sectional view taken along the line BB in FIG. It is the elements on larger scale of the motor vehicle to which the energy absorption member of Embodiment 1 of this invention is applied.
  • FIG. 7 is a partial cross-sectional view taken along the line CC of FIG. 6.
  • FIG. 7 is a DD cross-sectional view of FIG. 6.
  • FIG. 10 is a partial cross-sectional view taken along line EE in FIG. 9.
  • FIG. 10 is a sectional view taken along line FF in FIG. 9. It is a graph which shows the experimental result of the energy absorption state of the energy absorption member which concerns on this invention, and the conventional energy absorption member. It is a graph which shows the experimental result of the energy absorption state of the energy absorption member which concerns on this invention, and the conventional energy absorption member.
  • Embodiment 1 of the Invention 1 to 5 show a first embodiment of the present invention.
  • the energy absorbing member 11A according to the first embodiment shown in FIG. 1 is used for shock absorption of a bumper of the automobile 100 shown in FIG.
  • the energy absorbing member 11 ⁇ / b> A includes a side member 102 as a “body strength member” that extends in the vehicle front-rear direction below the side of the engine room 101 of the automobile 100 and a bumper skin 103.
  • a bumper reinforcing member 104 extending along the vehicle width direction is disposed along the vehicle longitudinal direction.
  • the energy absorbing member 11A is provided between the front side member 102 and the bumper reinforcing member 104 of the automobile 100, the energy absorbing member 11A is a rear side member (see FIG. 5). (Not shown) and a bumper reinforcing member (not shown) may be provided.
  • the energy absorbing member 11A is formed of a metal plate material as a “plate member” that has high rigidity and can absorb kinetic energy applied from the outside by plastic deformation.
  • the energy absorbing member 11A is formed of a steel plate having a thickness of about 1.2 to 2.0 millimeters.
  • the “plate member” constituting the energy absorbing member 11A can be formed of any material as long as it is a plastic material having good rigidity and kinetic energy absorption characteristics.
  • it can also be formed of a metal other than aluminum, such as a steel plate, an aluminized steel plate, a laminate of an aluminum plate and a resin film material, a resin, and a plywood thereof.
  • the energy absorbing member 11A is formed in a rectangular tube shape as shown in FIG. Specifically, in the energy absorbing member 11A, the plate-shaped plate material is substantially perpendicular to three parallel fold lines, that is, fold lines 20 (1), 20 (2), and 20 (3) shown in FIGS. Are bent into a square cylinder, and both sides are joined by spot welding or the like to form a fold line 20 (4).
  • the energy absorbing member 11A may be manufactured by any manufacturing method other than this. Accordingly, the energy absorbing member 11A includes a plate material as a “plate-shaped member” having a rectangular tube shape having four side surface portions 12 (1), 12 (2), 12 (3), and 12 (4). The inside surrounded by the side surface portions 12 (1), 12 (2), 12 (3), and 12 (4) is hollow, and the openings 13 and 13 are formed at both ends.
  • the energy absorbing member 11A is fixed to the side member 102 and the bumper reinforcing member 104 shown in FIG.
  • the central shaft 14 is disposed so as to face the front-rear direction of the automobile 100.
  • the energy absorbing member 11A is not limited to a rectangular cylinder, but may be a polygonal cylinder such as a circular cylinder, a pentagonal cylinder, or a hexagonal cylinder in plan view (that is, viewed from the opening 13 side). It may be a shape. Further, the inside of the energy absorbing member 11A may be partitioned by a partition member extending in the axial direction. Further, the energy absorbing member 11A may be fixed to the side member 102 and the bumper reinforcing member 104 in any configuration.
  • the energy absorbing member 11A is not limited to a cylindrical shape such as a square cylindrical shape, and may have any shape and structure as long as it has good rigidity and kinetic energy absorption characteristics.
  • it may have a shape in which plate materials are provided at both ends and the internal space is sealed, or a structure such as a rectangular cylinder or a cylinder formed by filling a material such as urethane inside. .
  • the bulging portion 15 of the energy absorbing member 11A has a polygonal shape when viewed from the front.
  • all the bulging portions 15 are formed in the same shape. That is, each bulging portion 15 has the same external hexagonal shape when viewed from the front, and has the same bulging size.
  • a ridge line 16 that is inclined toward the protruding direction of the bulging portion 15 is formed on the line connecting the three opposing corners of the bulging portion 15, as shown in FIGS. 3 and 4, a ridge line 16 that is inclined toward the protruding direction of the bulging portion 15 is formed. Yes. As shown in FIGS. 3 and 4, these ridge lines 16 form a curve that curves in the protruding direction of the bulging portion 15, and the intersection 17 of the ridge lines 16 is the highest point in the bulging direction.
  • the surface surrounded by the two ridgelines 16 and 16 of the bulging portion 15 and one side 18 of the outer shape forms a plane.
  • the bulging portion 15 is formed in a shape and size that favorably absorb the collision energy received when the automobile 100 collides.
  • one side of the outer shape of the bulging portion 15 is 12 millimeters and the height is 3 millimeters.
  • the bulging portion 15 may be formed in any outer shape or height as long as the collision energy absorption state is good.
  • the bulging portion 15 is arranged in a manner in which it does not easily bend in the cylindrical axial direction, that is, the direction along the central axis 14 shown in FIG. Specifically, as shown in FIG. 1, the energy absorbing member 11A is disposed over the entire area.
  • All the adjacent bulging portions 15 are adjacent to each other without a gap, and form a so-called honeycomb structure.
  • a configuration in which all the adjacent bulging portions 15 are close to each other with a certain gap that is, the original flat portion of the plate material between the sides 18 of the outer shape of the adjacent bulging portions 15 is arbitrary. It may be a configuration in which only the width remains.
  • the bulging part 15 is substantially the center axis
  • a plurality of rows are arranged with the orthogonal direction as one row. Specifically, as shown in FIG. 1, a first row 19 (1) in which bulging portions 15 (1), 15 (2), 15 (3) are arranged in a direction substantially orthogonal to the central axis 14 is provided. The second row 19 (2) in which the bulging portions 15 (4), 15 (5), 15 (6), 15 (7) are arranged immediately below the first row 19 (1) is formed. In the same manner, the third column 19 (3), the fourth column 19 (4),... Are formed in n columns (n is a natural number).
  • each row for example, the first row 19 (1), the second row 19 ( 2)...
  • the nth row 19 (n) has a row in which only the bulging portion 15 projecting outward from the square tubular shape of the energy absorbing member 11A is formed, and a square tubular shape.
  • the rows in which only the bulging portions 15 projecting inward are formed are alternately formed.
  • the bulging portions 15 (1), 15 (2), and 15 (3) forming the first row 19 (1) are all located inside the rectangular tube shape of the energy absorbing member 11 A.
  • the bulging portions 15 (4), 15 (5), 15 (6), and 15 (7) that protrude toward the second row 19 (2) are all squares of the energy absorbing member 11A. It protrudes toward the outside of the tube. Similarly, all the bulging portions 15 forming the third row 19 (3) protrude toward the inner side of the rectangular tube shape of the energy absorbing member 11A, and the bulging portions 15 forming the fourth row 19 (4). Are protruded outward in the rectangular tube shape of the energy absorbing member 11A, and these configurations are repeated up to the nth row 19 (n).
  • the columns formed on the side surface portions 12 (1), 12 (2), 12 (3), and 12 (4) are formed so as to be continuous with each other. . And as these rows, the bulging portion 15 protrudes toward the outside of the rectangular tube shape of the energy absorbing member 11A, and the bulging portion 15 protrudes toward the inside of the rectangular tube shape of the energy absorbing member 11A.
  • the rows are alternately formed.
  • the same row of the bulging portions 15 of the opposing surfaces has the same protruding direction, and the same row of the bulging portions 15 of the adjacent surfaces has the protruding direction opposite.
  • line 19 (21) of the side part 12 (3) is 11A of energy absorption members. Projecting toward the inside of the rectangular tube, and forming the first row 19 (11) of the side surface portion 12 (2) and the bulging portion 15 forming the first row 19 (31) of the side surface portion 12 (4),
  • the energy absorbing member 11 ⁇ / b> A is configured to protrude toward the outside of the rectangular tube shape.
  • the bulging portions 15 arranged in the same row on all surfaces may be configured so that the protruding directions are all the same.
  • the impact load When an impact load is applied to the bumper skin 103 from the front of the automobile 100, the impact load is transmitted to the energy absorbing member 11A via the bumper reinforcing member 104. Then, since the energy absorbing member 11 ⁇ / b> A is set to have a buckling load smaller than that of the side member 102, the energy absorbing member 11 ⁇ / b> A can buckle in the direction of the central axis 14 and suppress transmission of the load to the side member 102.
  • each bulging portion 15 is substantially hexagonal when viewed from the front, each vertex portion and the intersection 17 of the ridge line 16 form a substantially triangular shape, and the plurality of bulging portions 15 form a honeycomb structure. Therefore, there is a high resistance against the force applied along the surface direction of the side surfaces 12 (1), 12 (2), 12 (3), 12 (4).
  • the outer peripheral part of the bulging part 15 becomes a reference position at the time of buckling (that is, the energy absorbing member 11A is a surface of the side parts 12 (1), 12 (2), 12 (3), 12 (4).
  • the buckling portion 15 of the bulging portion 15 is different. By adjusting the size, the arrangement position, and the like, the degree of energy absorption can be adjusted without depending only on the wall length, plate thickness, and material of the energy absorbing member 11A.
  • the bulging portion 15 is provided on substantially the entire surface of the energy absorbing member 11A, high energy absorption efficiency can be obtained on the entire surface of the energy absorbing member 11A, and the side surface portions 12 (1), 12 ( 2), 12 (3), and 12 (4) have almost equal strength.
  • the energy absorbing member 11 ⁇ / b> A is more likely to buckle at the boundary portion between the plurality of adjacent bulging portions 15 than the central portion of the bulging portion 15, the portion corresponding to one side 18 of the bulging portion 15 is bent. Bending will progress. As the number of buckling points (that is, the number of bucklings of the energy absorbing member 11A) increases, the amount of shock energy absorbed increases. Therefore, 11 A of energy absorption members of this Embodiment 1 absorb collision energy with high energy absorption efficiency compared with the energy absorption member (refer patent document 1) provided with the conventional crash bead.
  • the energy absorbing member 11A has a bulging portion 15 in a direction substantially orthogonal to the central axis 14, the first row 19 (1), the second row 19 (2),... The n th row 19. Since (n) is formed, the energy absorbing member 11A has the first row 19 (1), the second row 19 (2)... Nth by the impact energy applied along the central axis 14. Buckle with reference to column 19 (n). At this time, the first row 19 (1), the second row 19 (2),..., The nth row 19 (n) are often bent in a bellows shape.
  • Projection direction of the protruding portion 15 (for example, the protruding direction of the bulging portions 15 (1) to 15 (3) of the first row 19 (1) and the protruding portion 15 (4) to 15 (7) of the second row Since the directions are alternately formed on the outer side and the inner side, when the energy absorbing member 11A is buckled, the bulging portions 15 of adjacent rows do not interfere with each other to prevent buckling. . Therefore, the energy absorbing member 11A buckles in a bellows shape with reference to the second row 19 (2)... Nth row 19 (n).
  • the energy absorbing member 11A buckles evenly in the axial direction of the central axis 14 before buckling while the energy absorbing member 11A is prevented from being bent with respect to the central axis 14 when an impact is applied.
  • high energy absorption efficiency can be obtained.
  • size of the bulging part 15 are adjusted by the several bulging part 15 being formed in the state which adjoined or adjoined to the board
  • the energy absorbing member 11A is formed with a mixture of a bulging portion 15 projecting inward of the rectangular tube shape and a bulging portion 15 projecting outward of the square tube shape.
  • the bulging portions 15 interfere with each other, and the energy absorbing member 11A can be prevented from being bent and buckled with respect to the axial direction of the central axis 14.
  • energy absorption member 11A which has high energy absorption efficiency and can freely adjust the degree of energy absorption can be provided.
  • At least one side surface portion of the energy absorbing member 11A formed in a square tube shape has a bulge portion 15 (for example, a bulge portion 15 ( 1)) and the bulging portion 15 (for example, the bulging portion 15 (4)) that protrudes outward in the shape of a rectangular tube are formed in a mixed manner, so that at least one side surface of the energy absorbing member 11A is formed.
  • the portion for example, the side surface portion 12 (1), it is possible to exert a high resistance against the impact energy and to buckle the energy absorbing member 11A at a desired location to absorb the impact with high energy absorption efficiency.
  • the energy absorbing member 11A can be buckled more evenly along the axial direction of the central axis 14 while reflecting the arrangement location and arrangement state of the energy absorbing member 11A, how to apply impact energy, and the like. .
  • the energy absorbing member 11A having higher energy absorption efficiency and capable of freely adjusting the degree of energy absorption can be provided.
  • Each of the nth rows 19 (n) has only a bulging portion 15 projecting inwardly in the shape of a square tube or only a bulging portion 15 projecting outward in the shape of a square tube.
  • the buckling position and the buckling direction of the energy absorbing member 11A can be adjusted with reference to the row in which the bulging portions 15 are arranged. That is, the position of buckling and the direction of buckling in the energy absorbing member 11A are shown in the first row 19 (1), the second row 19 (2),.
  • the member 11A can be easily designed and manufactured, and high energy absorption efficiency can be easily obtained. Thereby, 11 A of energy absorption members which can perform design and manufacture easily and can absorb an impact with higher energy absorption efficiency can be provided.
  • a row in which only the bulging portion 15 protruding outward in the shape of a square tube is formed for example, the second row 19 (2), the fourth row 19 (4).
  • rows in which only the bulging portions 15 projecting inwardly in the shape of a square cylinder are formed for example, the first row 19 (1) and the third row 19 (3) are alternately formed.
  • the first row 19 (1), the second row 19 (2),..., The nth row 19 (n) in which the bulging portions 15 are arranged have a square cylindrical center.
  • the plate-like member can be buckled without the bulging portions 15 becoming a hindrance to buckling, with reference to the boundary of.
  • the energy absorbing member 11A naturally impacts while buckling evenly along the axial direction of the central axis 14. Absorb energy. As a result, the energy absorbing member 11A having higher energy absorption efficiency and capable of freely adjusting the degree of energy absorption can be provided.
  • each of the side surface portions 12 (1) to 12 (4) is formed with a row in which the bulging portions 15 are arranged in a direction substantially perpendicular to the axial direction of the central axis 14. For each row, only the bulging portions 15 projecting inward in the rectangular tube shape and only the bulging portions 15 projecting outward in the square tube shape are alternately arranged.
  • the configuration may be such that the structure is formed only on a part of the side surfaces 12 (1) to 12 (4).
  • the energy absorbing member 11B according to the second embodiment, the entire view of which is shown in FIG. 6, is a bulge that forms the first row 19 (1) and the second row 19 (2). All the portions 15 protrude toward the inside of the rectangular tube shape of the energy absorbing member 11, and all the bulging portions 15 forming the third row 19 (3) and the fourth row 19 (4) are all in the energy absorbing member 11.
  • the bulging portion 15 has a configuration in which the bulging portion 15 alternately protrudes outward and inward every two rows.
  • the strength and energy absorption amount can be adjusted according to the location, shape, and size of the automobile 100 in which the energy absorbing member 11B is disposed.
  • the bulging portion 15 is not provided in every three rows or every four or more rows instead of the energy absorbing member 11B. It can also be set as the structure which protrudes inward and inward alternately.
  • Embodiment 3 of the Invention 9 to 11 show a third embodiment of the present invention.
  • the protruding direction is different from the first and second embodiments.
  • the energy absorbing member 11C of the third embodiment which is shown in FIG. 9 as an overall view, has a first row 19 (31) to a third row 19 (in the side surface portion 12 (3) as shown in FIG. 33), the bulging portion 15 forming the sixth row 19 (36) and the seventh row 19 (37), and the bulging portion 15 forming the ninth row 19 (39). All protrude outwardly of the rectangular tube shape of the energy absorbing member 11, and the fourth and fifth rows 19 (34), 19 (35), and the eighth row 19 (38) are all in the energy absorbing member 11.
  • the structure which protrudes toward the inside of a rectangular tube shape is provided. That is, the rows of the energy absorbing member 11 in which the bulging portions 15 projecting outward in the rectangular tube shape are arranged to change every three rows, every two rows, and every row.
  • the energy absorption member 11C can be adjusted in strength and energy absorption amount according to the location, shape, and size of the automobile 100 to be disposed.
  • the arrangement of the energy absorbing members 11C may be further changed to have different rules or irregular arrangements.
  • the energy absorbing members 11A, 11B, and 11C are provided between the side member 102 and the bumper reinforcing member 104 of the automobile 100.
  • the energy absorbing members 11A, 11B, and 11C are mounted on the vehicle body. It can also be provided in other parts.
  • energy absorption member 11A, 11B, 11C can also be applied to things other than a motor vehicle.
  • FIG.12 and FIG.13 shows the experimental result of the energy absorption state of the energy absorption member which concerns on this invention.
  • the vertical axis is the reaction force (unit kN)
  • the horizontal axis is the stroke (unit mm)
  • the vertical axis in FIG. 13 is the absorbed EA amount (unit J)
  • the horizontal axis is the stroke (unit mm).
  • FIG. 12 shows the relationship between the reduction in length due to buckling of the energy absorbing member and the reaction force
  • FIG. 13 shows the relationship between the reduction in length accompanying buckling of the energy absorbing member and the absorption. It shows the relationship with the amount of energy.
  • reference numeral 110 denotes an energy absorbing member 11A of the present invention, with one end attached to a fixed member, a 700 kg rigid body freely dropped from a height of 1.3 m from the other end side, and an initial speed of 18.2 km / h. A change in reaction force and a change in absorbed energy when the shaft is crushed are shown.
  • the energy absorbing member 11A of the first embodiment used in the experiment is formed of steel materials of SPC440W / 1.8t and 1.6t (YP: 355 MPa, TS: 483 MPa, El: 33%).
  • the length of one side of the energy absorbing member 11A is 80 mm.
  • Numeral 120 is an experimental result of an energy absorbing member (not shown) as a first comparative example.
  • the material, shape, and diameter of the energy absorbing member are the same as those of the energy absorbing member 11A of the first embodiment, except that the energy absorbing member is formed of a flat plate without the bulging portion 15.
  • Numeral 130 is an experimental result of an energy absorbing member (not shown) as a second comparative example.
  • the material, shape, and diameter of the energy absorbing member are the same as those of the energy absorbing member 11A of the first embodiment, a crush bead is provided in the same manner as the energy absorbing member described in Patent Document 1 instead of the bulging portion 15. The difference is that
  • the experiment contents for the first and second comparative examples are the same as the experiment contents for the energy absorbing member 11A of the first embodiment.
  • the energy absorbing member 11 of the present invention can increase the total amount of absorbed energy while keeping the initial drag small.
  • the energy absorbing member of the first comparative example has a very large initial drag and a small amount of absorbed energy.
  • the energy absorption amount of the second comparative example is as small as that of the first comparative example.
  • the energy absorbing member of the second comparative example has a small amount of absorbed energy although the initial drag is relatively small.
  • the energy absorbing member 11 of the present invention has a low initial drag, a large amount of absorbed energy, and a high performance as an energy absorbing member.
  • 11A, 11B, 11C ... energy absorbing member 12 (1), 12 (2), 12 (3), 12 (4) ... side face 14 ... central axis (axis) 15, 15 (1), 15 (2), 15 (3), 15 (4), 15 (5), 15 (6), 15 (7), 15 (8), 15 (9) ... swelling Output part 19, 19 (1), 19 (2), 19 (3), 19 (4), 19 (n) ... row 100 ... automobile 102 ... side member (body strength member) 104 ... Bumper reinforcement member

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vibration Dampers (AREA)

Abstract

Le problème décrit par la présente invention est de fournir un élément d'absorption de l'énergie qui présente une haute efficacité d'absorption de l'énergie et peut ajuster le degré de l'absorption de l'énergie. La solution de l'invention porte sur un élément d'absorption de l'énergie, qui présente un élément en forme de plaque, de forme tubulaire. De plus, l'énergie d'impact est absorbée par un gondolement de l'élément en forme de plaque. Pour cela, une pluralité de sections d'expansion sont formées dans l'élément en forme de plaque, dans un état adjacent ou proximal. De même, des sections d'expansion, faisant saillie vers l'intérieur de la forme tubulaire et des sections d'expansion, faisant saillie vers l'extérieur de la forme tubulaire, sont formées en coexistence, en tant que sections d'expansion.
PCT/JP2014/053414 2013-02-18 2014-02-14 Elément d'absorption d'énergie WO2014126183A1 (fr)

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JP2013-028998 2013-02-18
JP2013028998A JP2016094945A (ja) 2013-02-18 2013-02-18 エネルギー吸収部材

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WO2014126183A1 true WO2014126183A1 (fr) 2014-08-21

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JP (1) JP2016094945A (fr)
WO (1) WO2014126183A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109591738A (zh) * 2018-11-15 2019-04-09 华侨大学 一种汽车防撞结构总成
CN109910803A (zh) * 2018-12-24 2019-06-21 北奔重型汽车集团有限公司 一种适用于重卡车型的分段式保险杠
CN114880791A (zh) * 2022-04-13 2022-08-09 汕头大学 一种手性多胞结构单元、组合体及智能构建方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7371042B2 (ja) 2021-03-22 2023-10-30 豊田鉄工株式会社 車両用エネルギー吸収構成部材

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Publication number Priority date Publication date Assignee Title
DE19858432A1 (de) * 1998-12-17 2000-07-06 Mirtsch Gmbh Dr Energieabsorbierendes Deformationselement
EP1728936A2 (fr) * 2005-06-03 2006-12-06 Dr. Mirtsch GmbH Bande de matériau structurée faite d'une bande de matériau et méthode de fabrication
JP2011016409A (ja) * 2009-07-08 2011-01-27 Mazda Motor Corp 車両用フレーム構造
WO2012153792A1 (fr) * 2011-05-10 2012-11-15 株式会社深井製作所 Élément d'absorption d'énergie

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19858432A1 (de) * 1998-12-17 2000-07-06 Mirtsch Gmbh Dr Energieabsorbierendes Deformationselement
EP1728936A2 (fr) * 2005-06-03 2006-12-06 Dr. Mirtsch GmbH Bande de matériau structurée faite d'une bande de matériau et méthode de fabrication
JP2011016409A (ja) * 2009-07-08 2011-01-27 Mazda Motor Corp 車両用フレーム構造
WO2012153792A1 (fr) * 2011-05-10 2012-11-15 株式会社深井製作所 Élément d'absorption d'énergie

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109591738A (zh) * 2018-11-15 2019-04-09 华侨大学 一种汽车防撞结构总成
CN109591738B (zh) * 2018-11-15 2022-03-04 华侨大学 一种汽车防撞结构总成
CN109910803A (zh) * 2018-12-24 2019-06-21 北奔重型汽车集团有限公司 一种适用于重卡车型的分段式保险杠
CN114880791A (zh) * 2022-04-13 2022-08-09 汕头大学 一种手性多胞结构单元、组合体及智能构建方法
CN114880791B (zh) * 2022-04-13 2023-11-03 汕头大学 一种手性多胞结构单元、组合体及智能构建方法

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