WO2013164931A1 - Mécanisme d'absorption des chocs - Google Patents

Mécanisme d'absorption des chocs Download PDF

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Publication number
WO2013164931A1
WO2013164931A1 PCT/JP2013/058070 JP2013058070W WO2013164931A1 WO 2013164931 A1 WO2013164931 A1 WO 2013164931A1 JP 2013058070 W JP2013058070 W JP 2013058070W WO 2013164931 A1 WO2013164931 A1 WO 2013164931A1
Authority
WO
WIPO (PCT)
Prior art keywords
impact
load
absorbing mechanism
shock absorbing
wood
Prior art date
Application number
PCT/JP2013/058070
Other languages
English (en)
Japanese (ja)
Inventor
修久 奥田
Original Assignee
トヨタ車体株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by トヨタ車体株式会社 filed Critical トヨタ車体株式会社
Publication of WO2013164931A1 publication Critical patent/WO2013164931A1/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
    • B60R19/36—Combinations of yieldable mounting means of different types
    • 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 impact absorbing mechanism configured to receive an impact load at the time of a vehicle collision or the like and absorb the impact load.
  • Japanese Patent Application Laid-Open No. 2001-182769 describes a technique of an impact absorbing member relating to this technical field.
  • the automobile impact absorbing member 100 described in this document includes a rectangular hollow metal hollow member 102 and a piece of wood 105 filled in the hollow member 102.
  • the bumper reinforcement 108 is held at a predetermined position with respect to the side member 107 of the vehicle frame by the impact absorbing member 100.
  • one end of the shock absorbing member 100 is coupled to the front ends of the left and right side members 107 of the automobile via a support member 106.
  • the other end of the shock absorbing member 100 is also coupled to the back surface of a bumper reinforcement 108 of a front bumper (not shown) via another support member 106.
  • both ends in the axial direction of the shock absorbing member 100 are fixed, the shock absorbing member 100 is difficult to fall down when receiving the shock load F, and the shock load F is received in the axial direction consistently. Can do.
  • both ends of the shock absorbing member 100 are constrained by the support material 106, the shock absorbing member 100 is hardly crushed to both ends as shown in FIG. That is, the impact load F can be absorbed only by the portions excluding both ends of the impact absorbing member 100. Thus, since the range which is crushed within the limited length of the shock absorbing member 100 is reduced, it is difficult to increase the shock absorption amount.
  • an impact absorbing mechanism installed in a vehicle can be obtained.
  • This shock absorbing mechanism includes a columnar shock absorbing portion having a tubular member and wood housed in the tubular member and in which the fiber direction of the wood is directed in the axial direction.
  • the impact absorbing portion is disposed between a load receiving member that receives an impact load and a skeleton member of the vehicle, and when the impact load is applied from the load receiving member, at least the wood is crushed in the axial direction so that the impact is reduced.
  • the load can be absorbed.
  • One end in the axial direction of the impact absorbing portion is coupled to the skeleton member or the load receiving member by a coupling means, and the other end is not coupled to either the skeleton member or the load receiving member when an impact load is applied It is.
  • FIG. 3 is a cross-sectional view taken along the line III-III of the shock absorbing mechanism shown in FIG.
  • It is a longitudinal cross-sectional view showing the impact-absorbing part of the impact-absorbing mechanism by the embodiment of this invention.
  • It is a longitudinal cross-sectional view showing a mode that the cylindrical member and wood of an impact-absorbing part are crushed by an impact load.
  • It is a graph showing the relationship between the impact load added to the impact absorption mechanism by this embodiment, and the amount of crushing.
  • It is a graph showing the relationship between the impact load added to the conventional impact-absorbing member, and the amount of crushing.
  • the impact absorbing mechanism is a mechanism for absorbing an impact load F received by the bumper reinforcement 3 at the time of a vehicle collision, for example.
  • the shock absorbing mechanism 10 can be disposed between the bumper reinforcement 3 of the front bumper (not shown) and the left and right side members 5 of the lower frame of the vehicle 2.
  • an impact absorbing mechanism can be provided in the middle of the vehicle frame.
  • the impact absorbing mechanism 10 includes a support member 30 that supports the bumper reinforcement 3 at a predetermined position with respect to the side member 5, an impact absorbing portion 20 for absorbing the impact load F, and the like. It has.
  • the front-rear, left-right, and upper-lower directions in the following description are determined with reference to a vehicle having an impact absorbing mechanism as shown in the drawings.
  • the support member 30 may include a receiving portion 32 of the impact absorbing portion 20 and a bumper support portion 35 that supports the bumper reinforcement 3.
  • the receiving portion 32 can be a highly rigid member having a flat receiving surface 32f on the front side, for example.
  • the receiving portion 32 may be a flat plate member arranged in a vertical direction and having a large wall thickness.
  • the receiving surface 32f may not be flat but may have irregularities.
  • the receiving portion 32 is attached to the tip of the side member 5, and the receiving surface 32 f faces the rear surface 3 b of the bumper reinforcement 3.
  • the bumper support portion 35 is attached to the receiving surface 32 f of the receiving portion 32.
  • the bumper support portion 35 can be formed, for example, by bending a band plate-like flat plate into a substantially trapezoidal shape as shown in FIG.
  • the bumper support portion 35 includes a top portion 35m at the front end, a wall portion 35w extending rearward from the top and bottom of the top portion 35m, and a flange portion 35f extending in the opposite direction from the end of the wall portion 35w.
  • the bumper support portion 35 can be coupled to the upper and lower end edges of the receiving portion 32 by bolts 37 or the like. It is also possible to connect by welding instead of the bolt 37.
  • the receiving portion 32 may be omitted, and the receiving surface 32 f may be provided at the tip of the side member 5, and the bumper support portion 35 may be directly attached to the side member 5.
  • the rear surface 3b of the bumper reinforcement 3 is attached in a state of being in surface contact with the top portion 35m of the front end of the bumper support portion 35.
  • the wall portion 35 w is bent so as to swell up and down, and the top portion 35 m moves together with the bumper reinforcement 3 in the load direction. it can.
  • the bumper support portion 35 is preferably made of a metal such as a steel plate.
  • the impact absorbing portion 20 includes a cylindrical member 23 and a columnar wood 12 accommodated therein, and is arranged so that an impact load F due to a collision or the like can be received in the axial direction of the shape. Is done.
  • the cylindrical member 23 preferably has a regular hexagonal cross section perpendicular to the axis as shown in FIG. The cross section can be formed into a quadrangle, a regular pentagon, or the like.
  • the cylindrical member 23 may be, for example, an extruded product or a pultruded product using an aluminum alloy, or may be a metal other than aluminum.
  • the cross-sectional shape of the wood 12 is preferably the same as the cross-sectional shape of the cylindrical member 23 (hexagon) as shown in FIG.
  • the length of the wood 12 can be set to be substantially equal to the length of the cylindrical member 23 in the axial direction.
  • the wood 12 is shaped such that the direction of the fibers 12k or the axial direction of the annual rings extends in the length direction (columnar axial direction). For this reason, in a state where the wood 12 is accommodated in the tubular member 23, the direction of the fibers 12 k of the wood 12 substantially coincides with the axial direction of the tubular member 23. For this reason, the wood 12 can receive a large impact load F in the axial direction with high strength.
  • the type of the wood 12 for example, cedar is preferably used.
  • the shock absorbing portion 20 is coupled to the receiving surface 32 f of the receiving portion 32 in a state surrounded by the bumper supporting portion 35 of the supporting member 30.
  • the shock absorbing part 20 is coupled to the side member 5 through the receiving part 32.
  • a plurality of support members 25 having a substantially L-shaped cross section are fixed at equal intervals around one end in the axial direction of the shock absorbing portion 20 as a coupling means to the receiving surface 32f.
  • the support member 25 is coupled to the receiving surface 32f of the receiving portion 32 by welding, bolts, or the like.
  • the axis of the shock absorber 20 may be perpendicular to the receiving surface 32f.
  • a bolt hole or the like may be formed in the receiving portion 32 and the wood 12 of the shock absorbing portion 20 may be coupled to the receiving portion 32 with a bolt. It is also possible to omit the support member 25 and directly and firmly weld the tubular member 23 to the receiving surface 32f. The tip of the shock absorber 20 is separated from the top 35m of the support member 30, and the shock absorber 20 is held in a cantilevered state. That is, the axial length of the shock absorbing portion 20 is set to be smaller than the distance from the receiving surface 32 f of the support member 30 to the top portion 35 m.
  • the wood 12 and the cylindrical member 23 crushed in this way.
  • the wood 12 is deformed so as to swell outward together with the cylindrical member 23 by being crushed in the axial direction.
  • the wood 12 and the cylindrical member 23 are split at the unconstrained tip and spread radially outward.
  • the impact load F is absorbed by the wood 12 and the cylindrical member 23, and the impact load transmitted to the side member 5 is reduced.
  • FIG. 6A is a graph showing a result of measuring a change in an impact load F applied to the impact absorbing portion 20 in the axial direction with respect to a collapse amount (mm) of the impact absorbing portion 20.
  • the length of the cylindrical member 23 in the axial direction was set to about 70 mm
  • the width dimension (diameter dimension of the hexagonal circumscribed circle) was set to about 28 mm
  • the wall thickness dimension was set to about 0.8 mm.
  • the wood 12 has a length of about 70 mm, which is equal to the axial length of the cylindrical member 23, and the width dimension (diameter dimension of a hexagonal circumscribed circle) is a clearance between the outer peripheral surface of the wooden member 12 and the inner peripheral surface of the cylindrical member 23.
  • FIG. 6B is a graph showing measurement results using the conventional shock absorbing mechanism as shown in FIGS.
  • the shock absorption mechanism 10 according to the embodiment of the present invention has a larger shock absorption amount even when the length is the same as the conventional one.
  • the tip of the impact absorbing portion 20 can be brought into contact with the top portion 35 m of the support member 30 without being coupled.
  • the tip of the impact absorbing portion 20 can be spot welded (auxiliary coupling) to the top portion 35 m of the support member 30 so that the welding is released when the impact load F is applied.
  • the impact absorbing portion 20 is in a cantilever state, and the tip of the impact absorbing portion 20 can be crushed.
  • the range in which the impact absorbing portion 20 can be crushed can be widened by intentionally providing a difference in the coupling strength between both ends of the impact absorbing portion 20.
  • FIG. 8 it is possible to fix the impact absorbing portion 20 to the bumper reinforcement 3 side and not to the side member 5 side. As shown in FIG. 9, when the impact load F is applied, the rear side of the wood 12 and the cylindrical member 23 is crushed.
  • the bumper reinforcement 3 is supported at a predetermined position with respect to the side member 5 by the bumper support portion 35 of the support member 30, and the impact absorbing portion 20 does not need to support the bumper reinforcement 3.
  • the bumper support portion 35 hardly absorbs an impact load by being easily bent outward as shown in FIG. Therefore, it is possible to design the support structure of the bumper reinforcement 3 and the shock load absorption performance independently.
  • the shock absorbing performance can be adjusted by changing the cross-sectional area of the shock absorbing portion 20, for example.
  • the support rigidity is consequently improved without affecting the shock absorbing portion 20. be able to.
  • the bumper support portion 35 of the support member 30 is formed so as to surround the impact absorbing portion 20. Further, the bumper support portion 35 is formed in a trapezoidal shape, and can be bent and deformed in a direction away from the impact absorbing portion 20 as shown in FIG. For this reason, the bumper support part 35 does not prevent the shock absorbing part 20 from being deformed so as to bulge outward. In addition, when the bumper reinforcement 3 can be sufficiently supported, one of the wall portions 35w of the bumper support portion 38 can be omitted as shown in FIG. 10 to simplify the structure.
  • the bumper support portion 35 may be curved so as to be convex outward so as to be convexly deformed outward, or a folding line may be provided so as to be convex outward.
  • it can be supported by a support material from the inside so as to be convexly deformed to the outside.
  • the shock absorbing portion 20 can be easily attached or replaced.

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

Abstract

La présente invention concerne un mécanisme d'absorption des chocs monté sur un véhicule pourvu d'une section d'absorption des chocs en forme de colonne (20), la section d'absorption des chocs (20) présentant un élément en forme de tube (23) et du bois (12) qui est logé à l'intérieur de l'élément en forme de tube (23), la direction des fibres du bois (12) étant alignée à la direction axiale. La section d'absorption des chocs (20) est disposée entre un élément de réception de charge (3), qui reçoit une charge de choc, et un élément de châssis (5) du véhicule. Lorsqu'une charge de choc est appliquée sur la section d'absorption des chocs (20) depuis l'élément de réception de charge (3), la section d'absorption des chocs (20) peut absorber la charge de choc car au moins le bois (12) est écrasé dans la direction axiale. Le mécanisme d'absorption des chocs est dans un état dans lequel une extrémité de la section d'absorption des chocs (20) dans la direction axiale est raccordée à l'élément de châssis (5) ou à l'élément de réception de charge (3) par un moyen de jonction, et dans lequel l'autre extrémité n'est raccordée ni à l'élément de châssis ni à l'élément de réception de charge (3) lorsqu'une charge de choc est appliquée.
PCT/JP2013/058070 2012-05-01 2013-03-21 Mécanisme d'absorption des chocs WO2013164931A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012104436A JP2013231484A (ja) 2012-05-01 2012-05-01 衝撃吸収機構
JP2012-104436 2012-05-01

Publications (1)

Publication Number Publication Date
WO2013164931A1 true WO2013164931A1 (fr) 2013-11-07

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WO (1) WO2013164931A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150069773A1 (en) * 2013-09-10 2015-03-12 Fuji Jukogyo Kabushiki Kaisha Impact absorber
JP2016200233A (ja) * 2015-04-13 2016-12-01 トヨタ車体株式会社 衝撃吸収部材
CN109070821A (zh) * 2016-04-22 2018-12-21 日产自动车株式会社 能量吸收结构
CN109774634A (zh) * 2017-11-15 2019-05-21 丰田车体株式会社 车辆冲击吸收构件
WO2019207936A1 (fr) * 2018-04-25 2019-10-31 トヨタ車体株式会社 Élément amortisseur et son procédé de fabrication
CN110431045A (zh) * 2017-03-23 2019-11-08 丰田车体株式会社 车辆的冲击吸收构件
WO2020053779A1 (fr) * 2018-09-11 2020-03-19 Arcelormittal Dispositif d'absorption d'énergie, carrosserie de véhicule à moteur et son procédé de fabrication
CN110998128A (zh) * 2017-09-25 2020-04-10 丰田车体株式会社 冲击吸收构件及其制造方法
EP3696439A1 (fr) * 2019-02-18 2020-08-19 Toyota Shatai Kabushiki Kaisha Élément d'absorption de chocs et son procédé de fabrication
CN112923002A (zh) * 2021-02-23 2021-06-08 山东科技大学 一种复合式抗冲击装置及其应用
WO2022181462A1 (fr) * 2021-02-24 2022-09-01 株式会社ダイセル Dispositif d'absorption des chocs

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6354677B2 (ja) * 2015-06-25 2018-07-11 トヨタ車体株式会社 車両の衝撃吸収構造
JP6846081B2 (ja) * 2016-11-30 2021-03-24 トヨタ車体株式会社 車両用部材

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JPH01171760U (fr) * 1988-05-12 1989-12-05
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JPH07277112A (ja) * 1994-04-11 1995-10-24 Showa Alum Corp 衝撃吸収ステー
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JP2002012107A (ja) * 2000-07-03 2002-01-15 Nippon Light Metal Co Ltd バンパステイ
JP2005067392A (ja) * 2003-08-25 2005-03-17 Suzuki Motor Corp 自動車用のバンパー構造
JP2005271734A (ja) * 2004-03-24 2005-10-06 Toyota Motor Corp 車両前部の衝撃吸収構造
JP2008120256A (ja) * 2006-11-13 2008-05-29 Toyota Motor Corp 車両用衝撃吸収構造

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JPS5720698U (fr) * 1980-07-09 1982-02-02
JPH01171760U (fr) * 1988-05-12 1989-12-05
JPH06171443A (ja) * 1992-12-04 1994-06-21 Nissan Motor Co Ltd 車両用バンパーの取付構造
JPH07277112A (ja) * 1994-04-11 1995-10-24 Showa Alum Corp 衝撃吸収ステー
JP2001182769A (ja) * 1999-12-27 2001-07-06 Showa Alum Corp 衝撃吸収部材
JP2002012107A (ja) * 2000-07-03 2002-01-15 Nippon Light Metal Co Ltd バンパステイ
JP2005067392A (ja) * 2003-08-25 2005-03-17 Suzuki Motor Corp 自動車用のバンパー構造
JP2005271734A (ja) * 2004-03-24 2005-10-06 Toyota Motor Corp 車両前部の衝撃吸収構造
JP2008120256A (ja) * 2006-11-13 2008-05-29 Toyota Motor Corp 車両用衝撃吸収構造

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10077015B2 (en) * 2013-09-10 2018-09-18 Subaru Corporation Impact absorber
US20150069773A1 (en) * 2013-09-10 2015-03-12 Fuji Jukogyo Kabushiki Kaisha Impact absorber
JP2016200233A (ja) * 2015-04-13 2016-12-01 トヨタ車体株式会社 衝撃吸収部材
CN109070821A (zh) * 2016-04-22 2018-12-21 日产自动车株式会社 能量吸收结构
EP3446929A4 (fr) * 2016-04-22 2019-02-27 Nissan Motor Co., Ltd. Structure d'absorption d'énergie
CN110431045A (zh) * 2017-03-23 2019-11-08 丰田车体株式会社 车辆的冲击吸收构件
CN110998128A (zh) * 2017-09-25 2020-04-10 丰田车体株式会社 冲击吸收构件及其制造方法
CN110998128B (zh) * 2017-09-25 2021-09-24 丰田车体株式会社 冲击吸收构件及其制造方法
CN109774634A (zh) * 2017-11-15 2019-05-21 丰田车体株式会社 车辆冲击吸收构件
CN109774634B (zh) * 2017-11-15 2022-06-07 丰田车体株式会社 车辆冲击吸收构件
WO2019207936A1 (fr) * 2018-04-25 2019-10-31 トヨタ車体株式会社 Élément amortisseur et son procédé de fabrication
DE112019002141B4 (de) 2018-04-25 2022-12-15 Toyota Shatai Kabushiki Kaisha Stoßdämpfendes Element und dessen Herstellungsverfahren
CN112074437A (zh) * 2018-04-25 2020-12-11 丰田车体株式会社 冲击吸收构件及其制造方法
JP2019189013A (ja) * 2018-04-25 2019-10-31 トヨタ車体株式会社 衝撃吸収部材及びその製造方法
WO2020053779A1 (fr) * 2018-09-11 2020-03-19 Arcelormittal Dispositif d'absorption d'énergie, carrosserie de véhicule à moteur et son procédé de fabrication
US11801800B2 (en) 2018-09-11 2023-10-31 Arcelormittal Energy absorbing device, motor vehicle body and method for manufacturing thereof
WO2020053623A1 (fr) * 2018-09-11 2020-03-19 Arcelormittal Dispositif d'absorption d'énergie, carrosserie de véhicule à moteur et son procédé de fabrication
JP2020133728A (ja) * 2019-02-18 2020-08-31 トヨタ車体株式会社 衝撃吸収部材及びその製造方法
US11371577B2 (en) 2019-02-18 2022-06-28 Toyota Shatai Kabushiki Kaisha Shock absorbing member and method of manufacturing the same
JP7125826B2 (ja) 2019-02-18 2022-08-25 トヨタ車体株式会社 衝撃吸収部材及びその製造方法
CN111572481A (zh) * 2019-02-18 2020-08-25 丰田车体株式会社 冲击吸收构件及制造冲击吸收构件的方法
EP3696439A1 (fr) * 2019-02-18 2020-08-19 Toyota Shatai Kabushiki Kaisha Élément d'absorption de chocs et son procédé de fabrication
CN112923002A (zh) * 2021-02-23 2021-06-08 山东科技大学 一种复合式抗冲击装置及其应用
WO2022181462A1 (fr) * 2021-02-24 2022-09-01 株式会社ダイセル Dispositif d'absorption des chocs

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