JP2004122909A - Bumper device for vehicle - Google Patents

Bumper device for vehicle Download PDF

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Publication number
JP2004122909A
JP2004122909A JP2002289111A JP2002289111A JP2004122909A JP 2004122909 A JP2004122909 A JP 2004122909A JP 2002289111 A JP2002289111 A JP 2002289111A JP 2002289111 A JP2002289111 A JP 2002289111A JP 2004122909 A JP2004122909 A JP 2004122909A
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JP
Japan
Prior art keywords
bumper
vehicle
main body
moving
movable
Prior art date
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JP2002289111A
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Japanese (ja)
Inventor
Ryozo Yoshizawa
吉沢 亮蔵
Isamu Nakanishi
仲西 勇
Takahiro Kamei
亀井 孝博
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP2002289111A priority Critical patent/JP2004122909A/en
Publication of JP2004122909A publication Critical patent/JP2004122909A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a bumper device for a vehicle capable of increasing impact absorbing capacity at a portion having a high possibility of impact and surely receiving impact in a wide range. <P>SOLUTION: This device is constituted of a long-sized bumper main body 43 mounted on a vehicle body 11, a moving bumper 46 mounted on the bumper main body 43 to be movable to the outside, an air bag (projecting means) 48 for projection mounted on the vehicle body 11 side to project the moving bumper 46 from the bumper main body 43, a divided bumper 48 moved in the vertical direction after projecting the moving bumper 46 from the bumper main body 43 by mounting the divided bumper 47 on the moving bumper 46 to be movable in the vertical direction, and an elastic means (vertical movement means) 103 for extending the divided bumper 47 in the vertical direction. The impact absorbing capacity can be increased at the portion having the high possibility of impact. As a result, impact absorption can be efficiently performed and a difference of a bumper setting height according to the type of the vehicle is absorbed to expand validity of a bumper function. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、車両にかかる衝撃を吸収する車両のバンパ装置に関する。
【0002】
【従来の技術】
車両にかかる衝撃の大きさによってバンパを前後移動するようにした車両のバンパ装置が知られている(例えば、特許文献1参照。)。
【0003】
【特許文献1】
特開平10−203410号公報(第6頁、図2)
【0004】
同公報の図2を再掲し上記技術を説明する。ただし、同公報に記載の符号を新しく振り直すとともに記載の名称も一部変更した。
図9は特開平10−203410公報の図2の再掲図である。
上記の自動車の衝撃吸収車体構造200は、車体フレーム201に車幅方向に沿ってクロスメンバ202を設け、このクロスメンバ202の中央にモータ203を取付け、このモータ203の左右にスクリューロッド204,204の一端をそれぞれ連結し、これらのスクリューロッド204,204の他端を回転可能にクロスメンバ202に取付け、これらのスクリューロッド204,204にV字形アーム205,205を嵌合させ、このV字形アーム205,205の先端同士にバンパビーム206を掛け渡し、スクリューロッド204,204でV字形アーム205,205のV字の開き角を調整することで、バンパビーム206を突出できるようにしたものである。
【0005】
【発明が解決しようとする課題】
しかし、上記の自動車の衝撃吸収車体構造200では、バンパビーム206のどの部位もほぼ一定の衝撃吸収容量を有するものであり、例えば、車両の前面などの衝突の可能性の高い部位には衝撃吸収容量を増やすことが必要となる。
また、バンパビーム206を突出させ衝撃吸収容量を稼いだにもかかわらず、車種の違いでそれぞれのバンパ同士の設定高さが異なり、これらの車両のバンパ同士が、必ずしも当たるとは限らず、バンパの設定高さの違いを考えた配慮も望まれる。
【0006】
そこで、本発明の目的は、衝撃吸収容量を衝突の可能性の高い部位には衝撃吸収容量を増やし、衝撃を広範囲に確実に受け止めることのできる車両用バンパ装置を提供することにある。
【0007】
【課題を解決するための手段】
上記目的を達成するために請求項1の車両のバンパ装置は、車体に取付ける長尺状のバンパ本体と、このバンパ本体に対して外方に移動可能に取付けた移動バンパと、この移動バンパをバンパ本体から突出させるために車体側に取付けた突出手段と、移動バンパに上下移動可能に取付けることで移動バンパをバンパ本体から突出させた後に上下に移動させる分割バンパと、この分割バンパを上下に広げる上下移動手段と、からなることを特徴とする。
【0008】
車体に長尺状のバンパ本体を取付け、このバンパ本体に対して外方に移動可能に移動バンパを取付け、この移動バンパをバンパ本体から突出させるために車体側に突出手段を取付けることで、衝突の可能性の高い部位には衝撃吸収容量を増やす。これにより、衝撃吸収の効率化を図ることができる。
さらに、移動バンパをバンパ本体から突出させた後に上下に移動させるために移動バンパに分割バンパを上下移動可能に取付け、この分割バンパを上下に広げる上下移動手段を設けることで、車種によるバンパ設定高さの違いを吸収する。この結果、バンパ機能の有効性の拡大を図ることができる。
【0009】
請求項2は、分割バンパを、上側バンパと下側バンパとから構成し、バンパ本体から移動バンパを突出させたときに、上側バンパの一部をバンパ本体の上面を超えるまで移動させ、下側バンパの一部をバンパ本体の下面を超えるまで移動させることを特徴とする。
上側バンパの一部をバンパ本体の上面を超えるまで移動させ、下側バンパの一部をバンパ本体の下面を超えるまで移動させることで、車種によるバンパ設定高さの違いの吸収できる範囲を広げることができる。
また、上側バンパ及び下側バンパの他の部分がバンパ本体の外側に配置される。従って、別途ロック手段などを設けることなく、簡単な構成で突出後の移動バンパに加わる衝撃を確実に受け止めることができる。
この結果、バンパ機能の有効性をさらに拡大することができる。
【0010】
請求項3は、上下移動手段に、上側バンパと下側バンパとの間に介在させる弾発部材を用い、この弾発部材を、移動バンパがバンパ本体の内部にあるときは圧縮させ、移動バンパがバンパ本体の外部に突出したときに伸張させて上側バンパ及び下側バンパをそれぞれ移動することを特徴とする。
上下移動手段に、上側バンパと下側バンパとの間に介在させる弾発部材を用い、この弾発部材を、移動バンパがバンパ本体の内部にあるときは圧縮させ、移動バンパがバンパ本体の外部に突出したときに伸張させて上側バンパ及び下側バンパをそれぞれ移動することで、車両のバンパ装置を簡易な構成にすることができる。この結果、車両のバンパ装置のコストの低減を図ることができる。
【0011】
【発明の実施の形態】
本発明の実施の形態を添付図に基づいて以下に説明する。なお、「前」、「後」、「左」、「右」、「上」、「下」は運転者から見た方向に従い、Frは前側、Rrは後側、Lは左側、Rは右側を示す。また、図面は符号の向きに見るものとする。
【0012】
図1は本発明に係る車両のバンパ装置を搭載した車両の斜視図である。
図中、10は車両、11は車体、12は前輪、13は前照灯、14はボンネット、15はルーフ、16はフロントウインドウ、17は前ドア、18はドアミラー、19はフロントフェンダ、21,22は左右のサイドフレーム、23はクロスメンバ、24はレーダ、25は制御部であり、車両のバンパ装置30は、
レーダ24からの情報で車両10の進行方向に障害物(不図示)を発見し、この障害物が車両10に衝突する可能性が高いときに、制御部25の指示でバンパの特定部分を車両10の前方に突出させたり、バンパの特例部分の衝撃吸収能力を増減させる装置である。以下、車両のバンパ装置30の詳細を説明する。
【0013】
図2は本発明に係る車両のバンパ装置の平面図であり、車両のバンパ装置30は、左右のサイドフレーム21,22に取付けた左右のダンパユニット31,32と、これらのダンパユニット31,32のそれぞれロッド33,34に第1の圧縮ばね35,35を介して前後移動可能に支持した移動板36と、左右のダンパユニット31,32のロッド33,34の先端にそれぞれスイング可能に取付けた左右のバンパ体37,38と、左右のサイドフレーム21,22のステー部27,28にそれぞれスイング可能に取付けた一対の中央ダンパユニット41,42と、これらの中央ダンパユニット41,42のロッド63,64に支持させたバンパ本体43と、バンパ本体43と移動板36との間に介在させた第2の圧縮ばね45,45と、バンパ本体43に対して外方(前方)に突出可能に取付けるとともに中央ダンパユニット41,42のロッド63,64に着脱自在に取付けた移動バンパ46と、この移動バンパ46に上下移動可能に取付けることでバンパ本体43から突出させた後に上下移動させる分割バンパ47と、これらの分割バンパ47及び移動バンパ46を外方(前方)突出させるために移動板36に取付けた突出手段としての突出用エアバッグ48と、バンパ本体43に取付けることでバンパ本体43及び左右のバンパ体37,38を一括して覆うバンパ外装部49と、このバンパ外装部49に形成することで分割バンパ47及び移動バンパ46を突出させる開口52と、この開口52に着脱自在に取付けた覆う蓋部材53と、障害物(不図示)の方向や大きさを検知するレーダ24(図1参照)と、このレーダ24の情報で左右のダンパユニット31,32、中央ダンパユニット41,42の減衰力を可変するとともに突出用エアバッグ48を作動する制御部25(図1参照)と、からなる。
【0014】
左のダンパユニット31は、シリンダ55、ロッド33及び封入流体(不図示)を主要構成とするユニットであって、例えば、流体を通過させるオリフィスの断面積を変化させることで、ユニットの減衰力を調整し、衝撃エネルギーの吸収能力を可変することのできるユニットである。ロッド33は、移動板36を止めるためのストッパ57と、先端に左のバンパ体37を嵌合させる嵌合部61とを備える。
【0015】
右のダンパユニット32は、左のダンパユニット31と同一ユニットであり、56はシリンダ、58はストッパ、62は嵌合部である。
中央ダンパユニット41,42は、左右のダンパユニット31,32と略同一構造のダンパであり、ロッド63,64にバンパ本体43を取付けるとともに移動バンパ46を着脱自在に取付けるためのジョイント部65,66を備える。なお、67,68はステー部27,28にスイング自在に取付けるシリンダである。
【0016】
移動板36は、突出用エアバック48を取付ける取付け部71と、中央ダンパユニット41,42を貫通させる貫通部73,74と、左右のダンパユニット31,32のロッド33,34にスライド可能に支持させる支持孔75,76と、を形成した。
【0017】
左右のバンパ体37,38は、ロッド33,34の嵌合部61,62に嵌合させる軸77,78を備える。
バンパ本体43は、移動バンパ46を突出可能に収納する中央収納部81と、第2圧縮ばね45,45を収納する左右の収納部83,84と、を備え、中央収納部81は、ロッド63,64のジョイント部65,66に嵌合させる軸85,86を備える。
【0018】
移動バンパ46は、分割バンパ47を収納する分割バンパ収納部91と、中央ダンパユニット41,42のロッド63,64に着脱可能に取付けるための左右の嵌合凹部93,94と、分割バンパ47を上下に突出させるための上・下開口95,96(下の96は不図示)とを備える。
突出用エアバッグ48は、移動板に取付けるケース87と、ケース87に収納したバッグ88と、このバッグ88を膨張させるインフレータ89とからなる。
【0019】
図3は図2の3−3線断面図である。
分割バンパ47は、上側バンパ101及び下側バンパ102と、これらの上側・下側バンパ101,102の間に介在させた上下移動手段としての弾発部材103,103(手前の103は不図示)と、からなる。
105は上開口95まで移動させたときにストッパの役目をなす上側バンパ101のフランジ部、106は下開口96まで移動させたときにストッパの役目をなす下側バンパ102のフランジ部、107,108はバンパ本体43内に設けることで移動バンパ46の移動を容易にするスライド板である。
【0020】
すなわち、車両のバンパ装置30は、車体11(図1参照)に取付ける長尺状のバンパ本体43と、このバンパ本体43に対して外方に移動可能に取付けた移動バンパ46と、この移動バンパ46をバンパ本体43から突出させるために車体11側に取付けた突出用エアバッグ(突出手段)48と、移動バンパ46に上下移動可能に取付けることで移動バンパ46をバンパ本体43から突出させた後に上下に移動させる分割バンパ47と、この分割バンパ47を上下に広げる弾発手段(上下移動手段)103と、から構成したものであると言える。
【0021】
例えば、衝突の可能性の高い部位には衝撃吸収容量を増やす工夫をしたり、車種によるバンパ設定高さの違いを吸収する配慮をすることは、車両のバンパ装置において好ましいことである。
【0022】
そこで、車体11(図1参照)に長尺状のバンパ本体43を取付け、このバンパ本体43に対して前方(外方)に移動可能に移動バンパ46を取付け、この移動バンパ46をバンパ本体43から突出させるために車体11側に突出用エアバッグ(突出手段)48を取付けることで、衝突の可能性の高い部位には衝撃吸収容量を増やす。これにより、衝撃吸収の効率化を図ることができる。
また、移動バンパ46をバンパ本体43から突出させた後に上下に移動させるために移動バンパ46に分割バンパ47を上下移動可能に取付け、この分割バンパ47を上下に広げる弾発手段(上下移動手段)103を設けることで、車種によるバンパ設定高さの違いを吸収する。この結果、バンパ機能の有効性の拡大を図ることができる。
【0023】
図4は本発明に係る車両のバンパ装置のブロック図であり、車両のバンパ装置30の制御方法の一例を示す。
車両のバンパ装置30の制御システムは、レーダ24で障害物(不図示)の方向や大きさを検知し、この検知した情報を制御部25に送り、制御部25で障害物の方向や大きさを認知し、制御部25で左右のダンパユニット31,32、中央ダンパユニット41,42の減衰力を可変し、突出用エアバッグ48を作動するようにしたシステムである。
【0024】
例えば、障害物の大きさから歩行者の可能性が高いと制御部25で判断した場合は、制御部25で左右のダンパユニット31,32、中央ダンパユニット41,42の減衰力を弱く設定することで、歩行者にかかる衝撃を抑えることができる。
【0025】
障害物の大きさから電柱や構造物の可能性が高いと制御部25で判断した場合は、制御部25で左右のダンパユニット31,32、中央ダンパユニット41,42の減衰力を強く設定することで、車両10(図1参照)を十分に保護することができる。
【0026】
このときに、車両10の左方寄りに電柱や構造物があると制御部25で判断した場合は、左のダンパユニット31の減衰力を他のダンパの減衰力よりもさらに強い設定にすることで、効果的な衝撃吸収を実現することができる。また、車両10の右方寄りに電柱や構造物があると制御部25で判断した場合は、右のダンパユニット32の減衰力を強く設定する。なお、車両中央、車両左側、車両右側のダンパ強度を変化させて設定することは、例えば車両のオフセット衝突等にも有効な手段である。
【0027】
また、上記の左右のダンパユニット31,32、中央ダンパユニット41,42の減衰力を設定するときに、例えば、制御部25に車速情報を入力することで、車速に応じた減衰力の設定を行うものでもよい。
【0028】
次に、障害物の大きさから車両の可能性が高いと制御部25で判断した場合は、制御部25で左右のダンパユニット31,32、中央ダンパユニット41,42の減衰力を高く設定するとともに、突出用エアバッグ48を作動させ、移動バンパ46及び分割バンパ47を車両外方に突出させる。
以下、移動バンパ46及び分割バンパ47の突出動作を説明する。
【0029】
以上に述べた車両のバンパ装置30の作用を次に説明する。
図5(a),(b)は本発明に係る車両のバンパ装置の作用説明図(その1)であり初期状態の車両のバンパ装置を示す。
(a)において、移動バンパ46は、中央ダンパユニット41,42のロッド63,64に嵌合した状態にあり、中央ダンパユニット41,42でバンパ本体43と一体的に支持した状態にあることを示す。
【0030】
(b)において、分割バンパ47の上側・下側バンパ101,102は、移動ダンパ46の内部に収納した状態にあり、弾発部材103は最大に圧縮した状態であることを示す。
【0031】
図6(a),(b)は本発明に係る車両のバンパ装置の作用説明図(その2)である。
(a)において、突出用エアバッグ48を作動させ、バッグ88で移動バンパ46を矢印▲1▼の如く押す。この結果、ロッド63,64のジョイント部65,66から移動バンパ46の嵌合凹部93,94が外れ、移動バンパ46は分割バンパ47を連れて、車両外方(車両前方)に向けて移動する。
また、移動板36は、突出用エアバッグ48の反作用を受け、左右のダンパユニット31,32のロッド33,34に形成したストッパ57,58まで矢印▲2▼,▲2▼の如く移動する。従って、第1の圧縮ばね35,35は圧縮され、第2の圧縮ばね45,45は伸張される。
(b)において、移動バンパ46は、分割バンパ47とともにバンパ本体43の最前位置まで移動させたことを示す。
【0032】
図7(a),(b)は本発明に係る車両のバンパ装置の作用説明図(その3)である。
(a)において、突出用エアバッグ48のバッグ88をさらに膨張させることで、移動バンパ46及び分割バンパ47を矢印▲3▼の如く車両外方に突出させる。
(b)において、移動バンパ46及び分割バンパ47が車両外方に突出することで、バンパ外装部49の開口52から蓋部材53が矢印▲4▼の如く外れる。
【0033】
図8(a),(b)は本発明に係る車両のバンパ装置の作用説明図(その4)である。
(a)において、移動バンパ46が、車両外方に突出した状態では、分割バンパ47の拘束が取り去られた状態となる。すなわち、(b)に示すように、上側バンパ101の一部は、上開口95から飛び出し、矢印▲5▼の如くバンパ本体43の上面を超えるまで移動し、下側バンパ102の一部は、下開口96から飛び出し、矢印▲6▼の如くバンパ本体43の下面を超えるまで移動する。
【0034】
すなわち、車両のバンパ装置30は、分割バンパ47を、上側バンパ101と下側バンパ102とから構成し、バンパ本体43から移動バンパ46を突出させたときに、上側バンパ101の一部をバンパ本体43の上面を超えるまで移動させ、下側バンパ102の一部をバンパ本体43の下面を超えるまで移動させるものであるとも言える。
上側バンパ101の一部をバンパ本体43の上面を超えるまで移動させ、下側バンパ102の一部をバンパ本体43の下面を超えるまで移動させることで、車種によるバンパ設定高さの違いの吸収できる範囲を広げることができる。
また、上側バンパ101及び下側バンパ102の他の部分がバンパ本体43の外側に配置される。従って、別途ロック手段などを設けることなく、簡単な構成で突出後の移動バンパ46に加わる衝撃を確実に受け止めることができる。
この結果、バンパ機能の有効性をさらに拡大することができる。
【0035】
車両のバンパ装置30は、上下移動手段に、上側バンパ101と下側バンパ102との間に介在させる弾発部材103を用い、この弾発部材103を、移動バンパ46がバンパ本体43の内部にあるときは圧縮させ、移動バンパ46がバンパ本体43の外部に突出したときに伸張させて上側バンパ101及び下側バンパ102をそれぞれ移動するものであるとも言える。
上下移動手段に、上側バンパ101と下側バンパ102との間に介在させる弾発部材103用い、この弾発部材103を、移動バンパ46がバンパ本体43の内部にあるときは圧縮させ、移動バンパ46がバンパ本体43の外部に突出したときに伸張させて上側バンパ101及び下側バンパ102をそれぞれ移動することで、車両のバンパ装置30を簡易な構成にすることができる。この結果、車両のバンパ装置30のコストの低減を図ることができる。
【0036】
尚、実施の形態では図2に示すように、車体11(図1参照)の前方(外方)に移動できる車両のバンパ装置30として説明したが、これに限るものではなく、車両のバンパ装置は、車両後方に移動できるリヤバンパ、車両側方に移動できるサイドバンパやサイドプロテクタ等であってもよい。
また、実施の形態では図2に示すように、左右のダンパユニット31,32及び中央ダンパユニット41,42は、流体を通過させるオリフィスの断面積を変化させることで、ユニットの減衰力を調整し、衝撃エネルギーの吸収能力を可変することのできるユニットであると説明したが、これに限るものではなく、例えば、他の機械的手段、電気的手段若しくは磁気的手段を用いることで減衰力を変化できるユニットであればよい。
【0037】
【発明の効果】
本発明は上記構成により次の効果を発揮する。
請求項1では、車体に取付ける長尺状のバンパ本体と、このバンパ本体に対して外方に移動可能に取付けた移動バンパと、この移動バンパをバンパ本体から突出させるために車体側に取付けた突出手段と、から構成することで、衝突の可能性の高い部位には衝撃吸収容量を増やすことができる。これにより、衝撃吸収の効率化を図ることができる。
また、移動バンパに上下移動可能に取付けることで移動バンパをバンパ本体から突出させた後に上下に移動させる分割バンパと、この分割バンパを上下に広げる上下移動手段と、を設けることで、車種によるバンパ設定高さの違いを吸収することができる。この結果、バンパ機能の有効性の拡大を図ることができる。
【0038】
請求項2では、分割バンパを、上側バンパと下側バンパとから構成し、バンパ本体から移動バンパを突出させたときに、上側バンパの一部をバンパ本体の上面を超えるまで移動させ、下側バンパの一部をバンパ本体の下面を超えるまで移動させたので、車種によるバンパ設定高さの違いの吸収できる範囲を広げることができる。
また、上側バンパ及び下側バンパの他の部分がバンパ本体の外側に配置される。従って、別途ロック手段などを設けることなく、簡単な構成で突出後の移動バンパに加わる衝撃を確実に受け止めることができる。
この結果、バンパ機能の有効性をさらに拡大することができる。
【0039】
請求項3では、上下移動手段に、上側バンパと下側バンパとの間に介在させる弾発部材を用い、この弾発部材を、移動バンパがバンパ本体の内部にあるときは圧縮させ、移動バンパがバンパ本体の外部に突出したときに伸張させて上側バンパ及び下側バンパをそれぞれ移動させたので、車両のバンパ装置を簡易な構成にすることができる。この結果、車両のバンパ装置のコストの低減を図ることができる。
【図面の簡単な説明】
【図1】本発明に係る車両のバンパ装置を搭載した車両の斜視図
【図2】本発明に係る車両のバンパ装置の平面図
【図3】図2の3−3線断面図
【図4】本発明に係る車両のバンパ装置のブロック図
【図5】本発明に係る車両のバンパ装置の作用説明図(その1)
【図6】本発明に係る車両のバンパ装置の作用説明図(その2)
【図7】本発明に係る車両のバンパ装置の作用説明図(その3)
【図8】本発明に係る車両のバンパ装置の作用説明図(その4)
【図9】特開平10−203410公報の図2の再掲図
【符号の説明】
10…車両、11…車体、30…車両のバンパ装置、43…バンパ本体、46…移動バンパ、47…分割バンパ、48…突出手段(突出用エアバッグ)、101…上側バンパ、102…下側バンパ、103…上下移動手段(弾発手段)。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle bumper device for absorbing a shock applied to a vehicle.
[0002]
[Prior art]
2. Description of the Related Art A bumper device for a vehicle in which a bumper is moved back and forth depending on the magnitude of an impact applied to the vehicle is known (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-10-203410 (page 6, FIG. 2)
[0004]
FIG. 2 of the publication is repeated to explain the above technique. However, the reference numerals in the publication have been reassigned and the names of the descriptions have been partially changed.
FIG. 9 is a reproduction of FIG. 2 of JP-A-10-203410.
In the above-described shock absorbing body structure 200 for an automobile, a cross member 202 is provided on a body frame 201 along the vehicle width direction, and a motor 203 is mounted at the center of the cross member 202. Screw rods 204, 204 are provided on the left and right sides of the motor 203. , And the other ends of the screw rods 204, 204 are rotatably attached to the cross member 202, and V-shaped arms 205, 205 are fitted to the screw rods 204, 204, respectively. The bumper beam 206 is extended between the ends of the bumpers 205 and 205, and the V-shaped arms 205 and 205 are adjusted by the screw rods 204 and 204 to adjust the opening angle of the V-shape.
[0005]
[Problems to be solved by the invention]
However, in the above-described vehicle shock absorbing body structure 200, any part of the bumper beam 206 has a substantially constant shock absorbing capacity. For example, a part having a high possibility of collision such as the front of the vehicle has a shock absorbing capacity. It is necessary to increase.
Also, despite the fact that the bumper beam 206 is protruded to increase the shock absorbing capacity, the set height of each bumper differs depending on the type of vehicle, and the bumpers of these vehicles do not always hit each other. It is also desirable to consider the difference in setting height.
[0006]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle bumper device capable of increasing the shock absorbing capacity of a portion having a high possibility of collision and increasing the shock absorbing capacity to reliably receive the shock over a wide range.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a vehicle bumper device according to claim 1 includes a long bumper main body mounted on a vehicle body, a movable bumper mounted movably outward with respect to the bumper main body, and a movable bumper. A projecting means attached to the vehicle body side to project from the bumper main body, a split bumper which is mounted on the moving bumper so as to be movable up and down and then moves up and down after projecting the moving bumper from the bumper main body, and vertically moves the split bumper up and down. And a vertical moving means for expanding.
[0008]
A long bumper body is attached to the vehicle body, a movable bumper is attached to the bumper body so as to be able to move outward, and a projecting means is attached to the vehicle body side to make the movable bumper project from the bumper body. The shock absorbing capacity is increased in the parts where the possibility of the swelling is high. Thereby, the efficiency of shock absorption can be improved.
Furthermore, in order to move the moving bumper up and down after projecting it from the bumper main body, a split bumper is attached to the moving bumper so as to be able to move up and down, and a vertical moving means for expanding the split bumper up and down is provided. Absorb the difference. As a result, the effectiveness of the bumper function can be increased.
[0009]
According to a second aspect of the present invention, the split bumper includes an upper bumper and a lower bumper, and when the moving bumper is protruded from the bumper main body, a part of the upper bumper is moved until it exceeds the upper surface of the bumper main body. It is characterized in that a part of the bumper is moved until it goes over the lower surface of the bumper body.
By moving part of the upper bumper beyond the upper surface of the bumper body and moving part of the lower bumper beyond the lower surface of the bumper body, the range in which the difference in bumper setting height depending on the model can be absorbed is expanded. Can be.
Further, other portions of the upper bumper and the lower bumper are arranged outside the bumper main body. Therefore, it is possible to reliably receive the impact applied to the protruding moving bumper with a simple configuration without separately providing a locking means or the like.
As a result, the effectiveness of the bumper function can be further expanded.
[0010]
Claim 3 uses a resilient member interposed between the upper bumper and the lower bumper for the vertical moving means, and compresses the resilient member when the movable bumper is inside the bumper main body. Are extended when they protrude outside the bumper main body to move the upper bumper and the lower bumper, respectively.
A resilient member interposed between the upper bumper and the lower bumper is used for the vertical moving means, and the resilient member is compressed when the moving bumper is inside the bumper main body, and the moving bumper is moved outside the bumper main body. By moving the upper bumper and the lower bumper by extending them when they protrude, the bumper device of the vehicle can have a simple configuration. As a result, the cost of the vehicle bumper device can be reduced.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the accompanying drawings. In addition, “front”, “rear”, “left”, “right”, “up”, and “down” follow directions viewed from the driver, and Fr is the front side, Rr is the rear side, L is the left side, and R is the right side. Is shown. Also, the drawings should be viewed in the direction of reference numerals.
[0012]
FIG. 1 is a perspective view of a vehicle equipped with a vehicle bumper device according to the present invention.
In the figure, 10 is a vehicle, 11 is a vehicle body, 12 is a front wheel, 13 is a headlight, 14 is a hood, 15 is a roof, 16 is a front window, 17 is a front door, 18 is a door mirror, 19 is a front fender, 21 Reference numeral 22 denotes left and right side frames, reference numeral 23 denotes a cross member, reference numeral 24 denotes a radar, reference numeral 25 denotes a control unit.
When an obstacle (not shown) is found in the traveling direction of the vehicle 10 based on information from the radar 24 and the possibility that the obstacle collides with the vehicle 10 is high, the specific part of the bumper is moved by the instruction of the control unit 25 to the vehicle It is a device that protrudes forward from the front 10 or increases or decreases the shock absorbing capacity of a special portion of the bumper. Hereinafter, details of the bumper device 30 of the vehicle will be described.
[0013]
FIG. 2 is a plan view of a vehicle bumper device according to the present invention. The vehicle bumper device 30 includes left and right damper units 31 and 32 attached to left and right side frames 21 and 22, and these damper units 31 and 32. The movable plate 36 is supported by the rods 33 and 34 respectively through first compression springs 35 and 35 so as to be movable back and forth, and the movable plates 36 are swingably attached to the tips of the rods 33 and 34 of the left and right damper units 31 and 32, respectively. Left and right bumper bodies 37, 38, a pair of central damper units 41, 42 slidably attached to stay portions 27, 28 of left and right side frames 21, 22, and rods 63 of these central damper units 41, 42. , 64, second compression springs 45, 45 interposed between the bumper body 43 and the moving plate 36, And a movable bumper 46 detachably attached to the rods 63 and 64 of the central damper units 41 and 42, and a movable bumper 46 attached to the movable bumper 46 so as to be vertically movable. And a projecting airbag as a projecting means attached to the moving plate 36 for projecting the divided bumper 47 and the moving bumper 46 outward (forward). 48, a bumper exterior part 49 that covers the bumper body 43 and the left and right bumper bodies 37 and 38 collectively by being attached to the bumper body 43, and a split bumper 47 and a moving bumper 46 that are formed on the bumper exterior part 49. An opening 52 to be protruded, a cover member 53 detachably attached to the opening 52, and a direction and size of an obstacle (not shown). The radar 24 to be detected (see FIG. 1), and the control unit 25 (which varies the damping force of the left and right damper units 31 and 32 and the center damper units 41 and 42 and activates the protruding airbag 48 based on the information of the radar 24 (see FIG. 1). FIG. 1).
[0014]
The left damper unit 31 is a unit mainly composed of a cylinder 55, a rod 33, and a sealed fluid (not shown). For example, by changing the cross-sectional area of an orifice through which the fluid passes, the damping force of the unit is reduced. It is a unit that can adjust and vary the absorption capacity of impact energy. The rod 33 includes a stopper 57 for stopping the moving plate 36 and a fitting portion 61 for fitting the left bumper body 37 at the tip.
[0015]
The right damper unit 32 is the same unit as the left damper unit 31; 56 is a cylinder, 58 is a stopper, and 62 is a fitting portion.
The center damper units 41, 42 are dampers having substantially the same structure as the left and right damper units 31, 32, and joint portions 65, 66 for attaching the bumper body 43 to the rods 63, 64 and detachably attaching the moving bumper 46. Is provided. The cylinders 67 and 68 are attached to the stays 27 and 28 so as to swing freely.
[0016]
The moving plate 36 is slidably supported by a mounting portion 71 for mounting the protruding airbag 48, penetrating portions 73 and 74 for penetrating the central damper units 41 and 42, and rods 33 and 34 of the left and right damper units 31 and 32. And supporting holes 75 and 76 to be formed.
[0017]
The left and right bumper bodies 37, 38 have shafts 77, 78 to be fitted to the fitting portions 61, 62 of the rods 33, 34.
The bumper main body 43 includes a central storage section 81 that stores the movable bumper 46 in a protrudable manner, and left and right storage sections 83 and 84 that store the second compression springs 45 and 45. , 64 are provided with shafts 85, 86 to be fitted to the joint portions 65, 66.
[0018]
The movable bumper 46 includes a split bumper storage section 91 for storing the split bumper 47, left and right fitting recesses 93 and 94 for detachably attaching to the rods 63 and 64 of the central damper units 41 and 42, and a split bumper 47. Upper and lower openings 95 and 96 (the lower 96 is not shown) for projecting vertically are provided.
The protruding airbag 48 includes a case 87 attached to the moving plate, a bag 88 housed in the case 87, and an inflator 89 for inflating the bag 88.
[0019]
FIG. 3 is a sectional view taken along line 3-3 in FIG.
The split bumper 47 includes upper and lower bumpers 101 and 102 and resilient members 103 and 103 as vertical moving means interposed between the upper and lower bumpers 101 and 102 (the front 103 is not shown). And consisting of
Reference numeral 105 denotes a flange portion of the upper bumper 101 serving as a stopper when moved to the upper opening 95, and reference numeral 106 denotes a flange portion of the lower bumper 102 serving as a stopper when moved to the lower opening 96. Is a slide plate provided in the bumper main body 43 to facilitate movement of the movable bumper 46.
[0020]
That is, the bumper device 30 of the vehicle includes a long bumper main body 43 attached to the vehicle body 11 (see FIG. 1), a movable bumper 46 movably attached to the outside of the bumper main body 43, and a movable bumper 46. A projecting airbag (protruding means) 48 attached to the vehicle body 11 for projecting the 46 from the bumper main body 43 and a movable bumper 46 protruding from the bumper main body 43 by being attached to the moving bumper 46 so as to be vertically movable. It can be said to be composed of a split bumper 47 for moving up and down and a resilient means (vertical moving means) 103 for expanding the split bumper 47 up and down.
[0021]
For example, it is preferable in a bumper device of a vehicle to devise to increase the shock absorbing capacity in a portion having a high possibility of collision or to take into consideration a difference in bumper setting height depending on a vehicle type.
[0022]
Therefore, a long bumper main body 43 is attached to the vehicle body 11 (see FIG. 1), and a movable bumper 46 is attached to the bumper main body 43 so as to be movable forward (outward). By mounting a protruding airbag (protruding means) 48 on the vehicle body 11 side so as to protrude from the vehicle body 11, the shock absorbing capacity is increased at a portion where a collision is likely to occur. Thereby, the efficiency of shock absorption can be improved.
Further, in order to move the moving bumper 46 up and down after projecting it from the bumper body 43, a split bumper 47 is attached to the moving bumper 46 so as to be vertically movable, and a resilient means for vertically expanding the split bumper 47 (vertical moving means). By providing 103, the difference in bumper setting height depending on the vehicle type is absorbed. As a result, the effectiveness of the bumper function can be increased.
[0023]
FIG. 4 is a block diagram of the vehicle bumper device according to the present invention, and shows an example of a control method of the vehicle bumper device 30.
The control system of the vehicle bumper device 30 detects the direction and size of an obstacle (not shown) with the radar 24, sends the detected information to the control unit 25, and the control unit 25 controls the direction and size of the obstacle. Is recognized, the damping force of the left and right damper units 31 and 32 and the center damper units 41 and 42 is varied by the control unit 25, and the projecting airbag 48 is operated.
[0024]
For example, when the control unit 25 determines that the possibility of a pedestrian is high based on the size of the obstacle, the control unit 25 sets the damping force of the left and right damper units 31 and 32 and the center damper units 41 and 42 to be weak. Thus, the impact on the pedestrian can be suppressed.
[0025]
When the control unit 25 determines that there is a high possibility of a utility pole or a structure from the size of the obstacle, the control unit 25 sets the damping force of the left and right damper units 31 and 32 and the center damper units 41 and 42 to be strong. Thus, the vehicle 10 (see FIG. 1) can be sufficiently protected.
[0026]
At this time, if the control unit 25 determines that there is a telephone pole or a structure near the left of the vehicle 10, the damping force of the left damper unit 31 is set to be stronger than the damping forces of the other dampers. Thus, effective shock absorption can be realized. When the control unit 25 determines that there is a utility pole or a structure near the right of the vehicle 10, the damping force of the right damper unit 32 is set to be strong. Note that setting by changing the damper strength at the center of the vehicle, the left side of the vehicle, and the right side of the vehicle is an effective means for, for example, an offset collision of the vehicle.
[0027]
When the damping force of the left and right damper units 31 and 32 and the center damper units 41 and 42 is set, for example, by inputting the vehicle speed information to the control unit 25, the setting of the damping force according to the vehicle speed is performed. It may be done.
[0028]
Next, when the control unit 25 determines that the possibility of the vehicle is high from the size of the obstacle, the control unit 25 sets the damping force of the left and right damper units 31 and 32 and the center damper units 41 and 42 to be high. At the same time, the projecting airbag 48 is operated, and the movable bumper 46 and the split bumper 47 are projected outside the vehicle.
Hereinafter, the projecting operation of the moving bumper 46 and the split bumper 47 will be described.
[0029]
The operation of the above-described vehicle bumper device 30 will now be described.
FIGS. 5A and 5B are explanatory diagrams (1) of the operation of the vehicle bumper device according to the present invention, and show the vehicle bumper device in an initial state.
9A, the movable bumper 46 is in a state fitted to the rods 63, 64 of the central damper units 41, 42, and is supported by the central damper units 41, 42 integrally with the bumper body 43. Show.
[0030]
3B, the upper and lower bumpers 101 and 102 of the split bumper 47 are housed inside the moving damper 46, and the resilient member 103 is in a state of being compressed to the maximum.
[0031]
FIGS. 6A and 6B are explanatory views (part 2) of the operation of the vehicle bumper device according to the present invention.
In (a), the projecting airbag 48 is operated, and the moving bumper 46 is pushed by the bag 88 as shown by the arrow (1). As a result, the fitting concave portions 93 and 94 of the moving bumper 46 are disengaged from the joint portions 65 and 66 of the rods 63 and 64, and the moving bumper 46 moves toward the outside of the vehicle (forward of the vehicle) with the split bumper 47. .
The moving plate 36 receives the reaction of the protruding airbag 48 and moves to the stoppers 57 and 58 formed on the rods 33 and 34 of the left and right damper units 31 and 32 as shown by arrows (2) and (2). Therefore, the first compression springs 35, 35 are compressed, and the second compression springs 45, 45 are expanded.
7B, the moving bumper 46 has been moved to the forefront position of the bumper main body 43 together with the split bumper 47.
[0032]
FIGS. 7A and 7B are explanatory views (part 3) of the operation of the vehicle bumper device according to the present invention.
In (a), by further inflating the bag 88 of the protruding airbag 48, the movable bumper 46 and the split bumper 47 protrude outward from the vehicle as shown by the arrow (3).
In (b), when the moving bumper 46 and the split bumper 47 protrude outward from the vehicle, the lid member 53 comes off from the opening 52 of the bumper exterior 49 as shown by an arrow {circle around (4)}.
[0033]
FIGS. 8A and 8B are explanatory views (part 4) of the operation of the vehicle bumper device according to the present invention.
In (a), when the movable bumper 46 protrudes outside the vehicle, the restraint of the split bumper 47 is removed. That is, as shown in (b), a part of the upper bumper 101 jumps out of the upper opening 95 and moves until it exceeds the upper surface of the bumper main body 43 as shown by an arrow (5), and a part of the lower bumper 102 is It jumps out from the lower opening 96 and moves until it exceeds the lower surface of the bumper main body 43 as shown by the arrow (6).
[0034]
That is, in the vehicle bumper device 30, the split bumper 47 is configured by the upper bumper 101 and the lower bumper 102, and when the movable bumper 46 is projected from the bumper body 43, a part of the upper bumper 101 is It can be said that the lower bumper 102 is moved until it exceeds the upper surface of the bumper main body 43 and a part of the lower bumper 102 is moved beyond the lower surface of the bumper main body 43.
By moving a part of the upper bumper 101 over the upper surface of the bumper main body 43 and moving a part of the lower bumper 102 beyond the lower surface of the bumper main body 43, it is possible to absorb a difference in bumper setting height depending on a vehicle type. The range can be expanded.
Further, other portions of the upper bumper 101 and the lower bumper 102 are arranged outside the bumper main body 43. Therefore, it is possible to reliably receive the impact applied to the protruding moving bumper 46 with a simple configuration without separately providing a locking means or the like.
As a result, the effectiveness of the bumper function can be further expanded.
[0035]
The bumper device 30 of the vehicle uses a resilient member 103 interposed between the upper bumper 101 and the lower bumper 102 for the vertical moving means, and the resilient member 103 is moved inside the bumper body 43 by the moving bumper 46. It can be said that the upper bumper 101 and the lower bumper 102 are respectively moved by being compressed and expanded when the moving bumper 46 projects outside the bumper main body 43, respectively.
A resilient member 103 interposed between the upper bumper 101 and the lower bumper 102 is used as a vertical moving means, and the resilient member 103 is compressed when the movable bumper 46 is inside the bumper body 43, By moving the upper bumper 101 and the lower bumper 102 to extend when the 46 projects outside the bumper body 43, the bumper device 30 of the vehicle can have a simple configuration. As a result, the cost of the vehicle bumper device 30 can be reduced.
[0036]
In the embodiment, as illustrated in FIG. 2, the bumper device 30 of the vehicle that can move forward (outward) of the vehicle body 11 (see FIG. 1) is described. May be a rear bumper movable to the rear of the vehicle, a side bumper or a side protector movable to the side of the vehicle.
In the embodiment, as shown in FIG. 2, the left and right damper units 31 and 32 and the center damper units 41 and 42 adjust the damping force of the units by changing the cross-sectional area of the orifice through which the fluid passes. Although it is described that the unit is capable of changing the absorption capacity of impact energy, the present invention is not limited to this.For example, the damping force can be changed by using other mechanical means, electric means, or magnetic means. Any unit can be used.
[0037]
【The invention's effect】
The present invention has the following effects by the above configuration.
According to the first aspect, a long bumper main body attached to the vehicle body, a movable bumper mounted movably outward with respect to the bumper main body, and a movable bumper mounted on the vehicle body side so as to protrude from the bumper main body. With this configuration, it is possible to increase the shock absorbing capacity of a portion having a high possibility of collision. Thereby, the efficiency of shock absorption can be improved.
Also, by providing a split bumper that is mounted on the moving bumper so as to be able to move up and down and protrudes from the bumper main body and then moves up and down, and a vertical moving unit that spreads the split bumper up and down, a bumper depending on the vehicle type is provided. The difference in the set height can be absorbed. As a result, the effectiveness of the bumper function can be increased.
[0038]
In claim 2, the split bumper is composed of an upper bumper and a lower bumper, and when the moving bumper is projected from the bumper main body, a part of the upper bumper is moved until it exceeds the upper surface of the bumper main body. Since a part of the bumper is moved beyond the lower surface of the bumper main body, the range in which the difference in the bumper set height depending on the vehicle type can be absorbed can be expanded.
Further, other portions of the upper bumper and the lower bumper are arranged outside the bumper main body. Therefore, it is possible to reliably receive the impact applied to the protruding moving bumper with a simple configuration without separately providing a locking means or the like.
As a result, the effectiveness of the bumper function can be further expanded.
[0039]
According to a third aspect of the present invention, a resilient member interposed between the upper bumper and the lower bumper is used for the vertical moving means, and the resilient member is compressed when the movable bumper is inside the bumper main body. Since the upper bumper and the lower bumper are moved when they protrude to the outside of the bumper main body, the bumper device of the vehicle can have a simple configuration. As a result, the cost of the vehicle bumper device can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view of a vehicle equipped with a vehicle bumper device according to the present invention; FIG. 2 is a plan view of a vehicle bumper device according to the present invention; FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. FIG. 5 is a block diagram of a vehicle bumper device according to the present invention; FIG.
FIG. 6 is a view for explaining the operation of the vehicle bumper device according to the present invention (part 2).
FIG. 7 is a view for explaining the operation of the vehicle bumper device according to the present invention (part 3).
FIG. 8 is a view for explaining the operation of the vehicle bumper device according to the present invention (part 4).
FIG. 9 is a reprint of FIG. 2 of JP-A-10-203410.
DESCRIPTION OF SYMBOLS 10 ... vehicle, 11 ... body, 30 ... vehicle bumper apparatus, 43 ... bumper body, 46 ... moving bumper, 47 ... split bumper, 48 ... projecting means (projecting airbag), 101 ... upper bumper, 102 ... lower side Bumper 103: Up / down moving means (spring means).

Claims (3)

車体に取付ける長尺状のバンパ本体と、このバンパ本体に対して外方に移動可能に取付けた移動バンパと、この移動バンパを前記バンパ本体から突出させるために前記車体側に取付けた突出手段と、前記移動バンパに上下移動可能に取付けることで移動バンパを前記バンパ本体から突出させた後に上下に移動させる分割バンパと、この分割バンパを上下に広げる上下移動手段と、からなる車両のバンパ装置。A long bumper main body attached to the vehicle body, a moving bumper mounted movably outwardly with respect to the bumper main body, and a projecting means mounted on the vehicle body side to cause the moving bumper to protrude from the bumper main body. A bumper device for a vehicle, comprising: a split bumper that is mounted on the moving bumper so as to be vertically movable so that the moving bumper protrudes from the bumper main body and then moves up and down; and a vertical moving unit that expands the split bumper vertically. 前記分割バンパは、上側バンパと下側バンパとから構成し、前記バンパ本体から前記移動バンパを突出させたときに、前記上側バンパの一部を前記バンパ本体の上面を超えるまで移動させ、前記下側バンパの一部を前記バンパ本体の下面を超えるまで移動させることを特徴とする請求項1記載の車両のバンパ装置。The split bumper includes an upper bumper and a lower bumper, and when the moving bumper is projected from the bumper main body, a part of the upper bumper is moved until it exceeds the upper surface of the bumper main body. 2. The bumper device for a vehicle according to claim 1, wherein a part of the side bumper is moved until the side bumper exceeds a lower surface of the bumper main body. 前記上下移動手段は、前記上側バンパと下側バンパとの間に介在させる弾発部材であり、
この弾発部材を、前記移動バンパが前記バンパ本体の内部にあるときは圧縮させ、前記移動バンパが前記バンパ本体の外部に突出したときに伸張させて前記上側バンパ及び下側バンパをそれぞれ移動することを特徴とする請求項1又は請求項2記載の車両のバンパ装置。
The vertical movement means is a resilient member interposed between the upper bumper and the lower bumper,
The resilient member is compressed when the moving bumper is inside the bumper main body, and is expanded when the moving bumper protrudes outside the bumper main body to move the upper bumper and the lower bumper, respectively. The vehicle bumper device according to claim 1 or 2, wherein:
JP2002289111A 2002-10-01 2002-10-01 Bumper device for vehicle Withdrawn JP2004122909A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009234462A (en) * 2008-03-27 2009-10-15 Toyoda Gosei Co Ltd Pedestrian protection device
JP2010116132A (en) * 2008-11-14 2010-05-27 Ind Technol Res Inst Vehicular colliding shock absorber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009234462A (en) * 2008-03-27 2009-10-15 Toyoda Gosei Co Ltd Pedestrian protection device
JP2010116132A (en) * 2008-11-14 2010-05-27 Ind Technol Res Inst Vehicular colliding shock absorber

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