JP2019130948A - Vehicular impact absorber - Google Patents
Vehicular impact absorber Download PDFInfo
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Abstract
Description
本発明は、車両用衝撃吸収装置に関する。 The present invention relates to a shock absorber for a vehicle.
特許文献１には、サイドメンバの前端からステーを突出させることによってフロントバンパを車両前方へ移動させる車両用可動バンパ装置が開示されている。 Patent Document 1 discloses a vehicle movable bumper device that moves a front bumper forward of a vehicle by protruding a stay from a front end of a side member.
上記特許文献１に記載された技術では、サイドメンバの内部に摺動可能にステーを収容し、サイドメンバ内に設けたモータを作動させてアームを開くことでステーの固定状態を解除する構成となっている。このように複雑な機構を用いてバンパを移動させる構造であるため、簡易な構造で衝突を吸収する観点で改善の余地がある。 In the technique described in Patent Document 1, the stay is slidably accommodated inside the side member, and the fixed state of the stay is released by operating a motor provided in the side member to open the arm. It has become. Since the bumper is moved using such a complicated mechanism, there is room for improvement from the viewpoint of absorbing a collision with a simple structure.
本発明は上記事実を考慮し、簡易な構造で衝突を吸収することができる車両用衝撃吸収装置を得ることを目的とする。 The present invention has been made in view of the above facts, and an object of the present invention is to obtain a vehicle impact absorbing device that can absorb a collision with a simple structure.
請求項１に記載の本発明に係る車両用衝撃吸収装置は、車両前部及び車両後部の少なくとも一方に設けられ、衝突荷重が入力される衝突荷重入力部材と、前記衝突荷重入力部材の車両前後方向内側に設けられ、車両前後方向内側が開放された筒状に形成されると共に、車両前後方向外側の端部が前記衝突荷重入力部材側に接続された筒状部材と、前記筒状部材の外周側に設けられて車両骨格部材に取り付けられると共に、前記筒状部材を車両前後方向内側の収納位置と車両前後方向外側の作動位置との間で車両前後方向に摺動可能に支持する支持部材と、車両の衝突を検知又は予知した際に、前記筒状部材と前記支持部材とで囲まれた空間内でガスを発生させて前記筒状部材を前記作動位置へ摺動させるガス発生部と、前記支持部材に設けられ、前記筒状部材が前記作動位置へ移動した状態で、かつ、前記空間内のガス圧が所定の圧力よりも高くなった際に外部へガスを排気するバルブと、を有する。 A vehicle impact absorbing device according to a first aspect of the present invention is provided at least one of a vehicle front portion and a vehicle rear portion, a collision load input member to which a collision load is input, and the front and rear of the collision load input member. A cylindrical member provided on the inner side of the vehicle and having an inner end in the vehicle front-rear direction that is open, and an end on the outer side of the vehicle front-rear direction connected to the collision load input member side; A support member that is provided on the outer peripheral side and is attached to the vehicle skeleton member, and supports the cylindrical member slidably in the vehicle front-rear direction between the storage position inside the vehicle front-rear direction and the operation position outside the vehicle front-rear direction And a gas generator that generates a gas in a space surrounded by the cylindrical member and the support member and slides the cylindrical member to the operating position when a collision of the vehicle is detected or predicted. , Provided on the support member , While the tubular member is moved into the operating position, and having a valve for exhausting the gas to the outside when the gas pressure in said space is higher than a predetermined pressure.
請求項１に記載の本発明に係る車両用衝撃吸収装置では、車両前部及び車両後部の少なくとも一方には、衝突荷重が入力される衝突荷重入力部材が設けられている。また、衝突荷重入力部材の車両前後方向内側には、筒状部材が設けられており、この筒状部材の車両前後方向外側の端部が衝突荷重入力部材側に接続されている。さらに、筒状部材の外周側には、支持部材が設けられており、この支持部材は車両骨格部材に取り付けられている。ここで、支持部材は、筒状部材を車両前後方向内側の収納位置と車両前後方向外側の作動位置との間で車両前後方向に摺動可能に支持している。さらにまた、車両の衝突を検知又は予知した際にガスを発生させるガス発生部が設けられており、このガス発生部によって筒状部材と支持部材とで囲まれた空間内でガスが発生されて筒状部材を前記作動位置へ摺動させる。これにより、衝突荷重入力部材が作動位置へ摺動され、衝突時の衝撃を吸収することができる。 In the impact absorbing device for a vehicle according to the first aspect of the present invention, a collision load input member to which a collision load is input is provided in at least one of the vehicle front portion and the vehicle rear portion. Moreover, the cylindrical member is provided inside the vehicle load front-back direction of the collision load input member, and the edge part of the vehicle front-back direction outer side of this cylinder member is connected to the collision load input member side. Further, a support member is provided on the outer peripheral side of the cylindrical member, and this support member is attached to the vehicle skeleton member. Here, the support member supports the cylindrical member so as to be slidable in the vehicle front-rear direction between the storage position inside the vehicle front-rear direction and the operation position outside the vehicle front-rear direction. Furthermore, a gas generation unit is provided that generates gas when a vehicle collision is detected or predicted, and gas is generated by the gas generation unit in a space surrounded by the cylindrical member and the support member. The tubular member is slid to the operating position. Thereby, the collision load input member is slid to the operating position, and the impact at the time of collision can be absorbed.
また、支持部材にはバルブが設けられており、このバルブは、筒状部材が作動位置へ移動した状態で、筒状部材と支持部材とで囲まれた空間内のガス圧が所定の圧力よりも高くなった際に外部へガスを排気するように構成されている。これにより、ガス圧が上昇して衝突荷重入力部材や筒状部材などが破断するのを抑制することができる。なお、上記の「車両前後方向内側」とは、車両前後方向の中央に向かう方向を指しており、例えば、車両前部に衝突荷重入力部材が設けられている場合における「衝突荷重入力部材の車両前後方向内側」とは、衝突荷重入力部材の車両後方側を指す。また、車両後部に衝突荷重入力部材が設けられている場合における「衝突荷重入力部材の車両前後方向内側」とは、衝突荷重入力部材の車両前方側を指す。一方、上記の「車両前後方向外側」とは、車両前後方向の中央に向かう方向とは逆方向を指す。 In addition, the support member is provided with a valve, and in this state, the gas pressure in the space surrounded by the cylindrical member and the support member is higher than a predetermined pressure when the cylindrical member is moved to the operating position. The gas is exhausted to the outside when the temperature becomes higher. Thereby, it can suppress that gas pressure rises and a collision load input member, a cylindrical member, etc. fracture. In addition, the above-mentioned “vehicle front-rear direction inner side” refers to a direction toward the center of the vehicle front-rear direction. For example, when a collision load input member is provided at the front of the vehicle, “Inward in the front-rear direction” refers to the vehicle rear side of the collision load input member. Further, “the vehicle front-rear direction inner side of the collision load input member” when the collision load input member is provided at the rear portion of the vehicle refers to the vehicle front side of the collision load input member. On the other hand, the “outer side in the vehicle front-rear direction” refers to a direction opposite to the direction toward the center of the vehicle front-rear direction.
以上、説明したように、本発明に係る発明によれば、簡易な構造で衝突を吸収することができる、という優れた効果を有する。 As described above, according to the invention of the present invention, there is an excellent effect that a collision can be absorbed with a simple structure.
以下、図１〜４を参照して、実施形態に係る車両用衝撃吸収装置１０について説明する。なお、各図に適宜示される矢印ＦＲは車両前方側を示しており、矢印ＲＨは車両右側を示している。また、以下の説明で特記なく前後、上下、左右の方向を用いる場合は、車両前後方向の前後、車両上下方向の上下、進行方向を向いた場合の左右を示すものとする。 Hereinafter, the impact absorbing device 10 for a vehicle according to the embodiment will be described with reference to FIGS. In addition, the arrow FR shown appropriately in each drawing indicates the vehicle front side, and the arrow RH indicates the vehicle right side. Further, in the following description, when using the front / rear, up / down, and left / right directions, the front / rear direction of the vehicle, the up / down direction of the vehicle up / down direction, and the left / right direction in the traveling direction are indicated.
図１に示されるように、本実施形態に係る車両用衝撃吸収装置１０は、車両１２の前部に適用されており、この車両１２の前部には、衝突荷重入力部材としてのフロントバンパリインフォースメント１４が設けられている。フロントバンパリインフォースメント１４は、車両前後方向を厚み方向として車両幅方向に延在されており、このフロントバンパリインフォースメント１４の車両幅方向の両端部は、車両後方側へ緩やかに湾曲されている。そして、車両１２の前面衝突時には、このフロントバンパリインフォースメント１４で衝突体を受けるため、フロントバンパリインフォースメント１４に衝突荷重が入力される。 As shown in FIG. 1, the vehicle impact absorbing device 10 according to the present embodiment is applied to a front portion of a vehicle 12, and a front bumper reinforcement serving as a collision load input member is provided at the front portion of the vehicle 12. Is provided. The front bumper reinforcement 14 extends in the vehicle width direction with the vehicle front-rear direction as the thickness direction, and both ends of the front bumper reinforcement 14 in the vehicle width direction are gently curved toward the vehicle rear side. When a frontal collision of the vehicle 12 occurs, the front bumper reinforcement 14 receives a collision object, so that a collision load is input to the front bumper reinforcement 14.
フロントバンパリインフォースメント１４の車両後方側には、フロントサイドメンバ１６が設けられている。フロントサイドメンバ１６は、車両前後方向に延在されており、閉断面構造とされた骨格部材である。そして、フロントサイドメンバ１６は、フロントバンパリインフォースメント１４の車両幅方向両端部の後方側に左右一対設けられている。そして、フロントバンパリインフォースメント１４とフロントサイドメンバ１６との間には、車両用衝撃吸収装置１０が設けられており、本実施形態では、車両用衝撃吸収装置１０が左右一対設けられている。なお、車両右側の車両用衝撃吸収装置１０と車両左側の車両用衝撃吸収装置１０とは左右対称の構造であるため、以下の説明では、車両左側の車両用衝撃吸収装置１０について説明し、車両右側の車両用衝撃吸収装置１０の説明を省略する。 A front side member 16 is provided on the vehicle rear side of the front bumper reinforcement 14. The front side member 16 is a skeleton member that extends in the vehicle front-rear direction and has a closed cross-sectional structure. A pair of left and right front side members 16 are provided on the rear side of both ends of the front bumper reinforcement 14 in the vehicle width direction. A vehicle shock absorber 10 is provided between the front bumper reinforcement 14 and the front side member 16. In the present embodiment, a pair of left and right vehicle shock absorbers 10 are provided. Since the vehicle impact absorbing device 10 on the right side of the vehicle and the vehicle impact absorbing device 10 on the left side of the vehicle have a bilaterally symmetric structure, in the following description, the vehicle impact absorbing device 10 on the left side of the vehicle will be described. The description of the right vehicle shock absorber 10 is omitted.
図２に示されるように、車両用衝撃吸収装置１０は、主として、支持部材１８と、筒状部材２０と、連結部材２２と、ガス発生部としてのインフレータ２４と、バルブ２８とを含んで構成されている。 As shown in FIG. 2, the vehicle impact absorbing device 10 mainly includes a support member 18, a tubular member 20, a connecting member 22, an inflator 24 as a gas generation unit, and a valve 28. Has been.
支持部材１８は、車両前後方向を軸方向とする略筒状の部材であり、支持部材１８の後端部は、フロントサイドメンバ１６の前端部に接合されている。具体的には、支持部材１８の後端部から外周側へフランジ部１８Ａが延出されている。一方、フロントサイドメンバ１６の前端部から外周側にフランジ部１６Ａが延出されている。そして、支持部材１８側のフランジ部１８Ａとフロントサイドメンバ１６側のフランジ部１６Ａとは対応する形状に形成されて車両前後方向に重ね合わされている。そして、フランジ部１８Ａとフランジ部１６Ａとが周方向に複数カ所で締結されることで、支持部材１８の後端部がフロントサイドメンバ１６に取り付けられている。 The support member 18 is a substantially cylindrical member whose axial direction is the vehicle front-rear direction, and the rear end portion of the support member 18 is joined to the front end portion of the front side member 16. Specifically, the flange portion 18A extends from the rear end portion of the support member 18 to the outer peripheral side. On the other hand, a flange portion 16A extends from the front end portion of the front side member 16 to the outer peripheral side. The flange portion 18A on the support member 18 side and the flange portion 16A on the front side member 16 side are formed in corresponding shapes and overlapped in the vehicle front-rear direction. The rear end portion of the support member 18 is attached to the front side member 16 by fastening the flange portion 18A and the flange portion 16A at a plurality of locations in the circumferential direction.
また、支持部材１８における車両前方側の周壁には、外部と連通された連通部１８Ｂが形成されている。連通部１８Ｂは、支持部材１８の周壁における車両幅方向内側に形成されており、この周壁から略筒状に突設して形成されている。そして、この連通部１８Ｂの開口１８Ｃが後述するバルブ２８によって開閉可能に閉塞されている。ここで、図２の状態（車両用衝撃吸収装置１０が作動する前の通常状態）では、バルブ２８によって開口１８Ｃが閉塞されているため、支持部材１８の内部空間１９と外部空間とが遮断された状態となっている。 Further, a communication portion 18 </ b> B communicating with the outside is formed on the peripheral wall of the support member 18 on the vehicle front side. The communication portion 18B is formed on the inner side in the vehicle width direction on the peripheral wall of the support member 18, and is formed so as to protrude from the peripheral wall in a substantially cylindrical shape. And the opening 18C of this communication part 18B is obstruct | occluded by the valve | bulb 28 mentioned later so that opening and closing is possible. Here, in the state of FIG. 2 (normal state before the vehicle shock absorber 10 is activated), the opening 18C is closed by the valve 28, so that the internal space 19 and the external space of the support member 18 are blocked. It is in the state.
支持部材１８の前端部には、挿通孔１８Ｄが形成されている。挿通孔１８Ｄは、車両正面から見て略円形に形成されており、この挿通孔１８Ｄには筒状部材２０が挿通可能とされている。筒状部材２０は、車両前後方向を軸方向として軸方向両端側が開口された略筒状に形成されており、図２に示される通常状態では、筒状部材２０が支持部材１８の内部に収容されている。また、筒状部材２０の後端部にはフランジ部２０Ａが設けられている。フランジ部２０Ａは、筒状部材２０の後端部から外周側へ延出されており、このフランジ部２０Ａの外縁が支持部材１８の内周面に摺動可能に当接されている。さらに、筒状部材２０の前端部は、支持部材１８の挿通孔１８Ｄに挿通された状態で連結部材２２に突き当てられており、連結部材２２に接合されている。なお、これに限らず、筒状部材２０を前端側が閉じた有底筒状に形成し、この底部を連結部材２２に接合してもよい。 An insertion hole 18 </ b> D is formed in the front end portion of the support member 18. The insertion hole 18D is formed in a substantially circular shape when viewed from the front of the vehicle, and the cylindrical member 20 can be inserted into the insertion hole 18D. The tubular member 20 is formed in a substantially tubular shape with both ends in the axial direction opened with the vehicle longitudinal direction as the axial direction. In the normal state shown in FIG. 2, the tubular member 20 is accommodated inside the support member 18. Has been. Further, a flange portion 20 </ b> A is provided at the rear end portion of the tubular member 20. The flange portion 20 </ b> A extends from the rear end portion of the cylindrical member 20 to the outer peripheral side, and the outer edge of the flange portion 20 </ b> A is slidably contacted with the inner peripheral surface of the support member 18. Further, the front end portion of the tubular member 20 is abutted against the connecting member 22 in a state of being inserted through the insertion hole 18 </ b> D of the support member 18, and is joined to the connecting member 22. However, the present invention is not limited thereto, and the cylindrical member 20 may be formed in a bottomed cylindrical shape whose front end is closed, and the bottom portion may be joined to the connecting member 22.
以上のようにして、筒状部材２０の内側の空間１９は、筒状部材２０と支持部材１８とで閉塞された空間となっている。また、筒状部材２０の外周側に設けられた支持部材１８によって筒状部材２０が車両前後方向に摺動可能に支持されている。ここで、図２に示されるように、車両用衝撃吸収装置１０が作動する前の通常状態では、筒状部材２０が最も車両後方側（車両前後方向内側）の収納位置に配置されている。そして、図示しないストッパ機構によって収納位置から筒状部材２０が移動しないように係止されている。一方、図３に示されるように、後述する車両用衝撃吸収装置１０のインフレータ２４が作動した作動状態では、筒状部材２０が最も車両前方側（車両前後方向外側）の作動位置まで移動する。すなわち、支持部材１８は、筒状部材２０を収納位置と作動位置との間で摺動可能に支持している。 As described above, the space 19 inside the tubular member 20 is a space closed by the tubular member 20 and the support member 18. Further, the cylindrical member 20 is supported by a support member 18 provided on the outer peripheral side of the cylindrical member 20 so as to be slidable in the vehicle front-rear direction. Here, as shown in FIG. 2, in a normal state before the vehicle impact absorbing device 10 operates, the cylindrical member 20 is disposed at the storage position on the rearmost side (in the vehicle front-rear direction). The tubular member 20 is locked by a stopper mechanism (not shown) so as not to move from the storage position. On the other hand, as shown in FIG. 3, in an operating state in which the inflator 24 of the vehicle impact absorbing device 10 to be described later is operated, the cylindrical member 20 moves to the operating position closest to the vehicle front side (the vehicle front-rear direction outer side). That is, the support member 18 supports the cylindrical member 20 so as to be slidable between the storage position and the operation position.
連結部材２２は、筒状部材２０とフロントバンパリインフォースメント１４とを連結する部材であり、平面視で略矩形状に形成されている。そして、この連結部材２２の前端部がフロントバンパリインフォースメント１４の後面に接合されており、連結部材２２の後端部が筒状部材２０の前端部に接合されている。 The connecting member 22 is a member that connects the tubular member 20 and the front bumper reinforcement 14, and is formed in a substantially rectangular shape in plan view. The front end portion of the connecting member 22 is joined to the rear surface of the front bumper reinforcement 14, and the rear end portion of the connecting member 22 is joined to the front end portion of the tubular member 20.
図２に示されるように、支持部材１８の内部には、インフレータ２４が設けられている。本実施形態のインフレータ２４は、支持部材１８の後端側の内壁に取り付けられており、筒状部材２０と支持部材１８とで閉塞された空間１９内に配置されている。また、インフレータ２４は、図示しない着火部とガス発生部とを備えており、作動することで着火されてガス発生部からガスが発生し、空間１９内にガスが供給される。 As shown in FIG. 2, an inflator 24 is provided inside the support member 18. The inflator 24 according to the present embodiment is attached to the inner wall on the rear end side of the support member 18 and is disposed in a space 19 closed by the tubular member 20 and the support member 18. The inflator 24 includes an ignition unit (not shown) and a gas generation unit. The inflator 24 is ignited by operation to generate gas from the gas generation unit, and the gas is supplied into the space 19.
インフレータ２４は、制御部であるＥＣＵ（Ｅｌｅｃｔｒｏｎｉｃ Ｃｏｎｔｒｏｌ Ｕｎｉｔ）２６と電気的に接続されている。また、ＥＣＵ２６は、図示しない衝突センサや衝突予知センサなどのセンサ２９と電気的に接続されている。そして、ＥＣＵ２６は、センサ２９からの信号に基づいて車両の衝突を検知又は予知した際に、インフレータ２４を作動させてガスを発生させ、筒状部材２０と支持部材１８とで囲まれた空間１９内にガスを供給する。これにより、空間１９内のガス圧が上昇して筒状部材２０が作動位置まで車両前方側へ摺動され、図３の状態となる。なお、このとき、ＥＣＵ２６は、インフレータ２４を作動させる前に図示しないストッパ機構による筒状部材２０の係止状態を解除するようにしてもよい。 The inflator 24 is electrically connected to an ECU (Electronic Control Unit) 26 that is a control unit. The ECU 26 is electrically connected to a sensor 29 such as a collision sensor or a collision prediction sensor (not shown). When the ECU 26 detects or predicts a vehicle collision based on the signal from the sensor 29, the ECU 26 operates the inflator 24 to generate gas, and the space 19 surrounded by the tubular member 20 and the support member 18. Supply gas inside. Thereby, the gas pressure in the space 19 rises, and the cylindrical member 20 is slid to the vehicle front side to the operating position, resulting in the state of FIG. At this time, the ECU 26 may release the locked state of the tubular member 20 by a stopper mechanism (not shown) before operating the inflator 24.
図３の状態では、筒状部材２０のフランジ部２０Ａが支持部材１８の前端側の内壁に当接した状態となっている。そして、この状態では、筒状部材２０と支持部材１８とで閉塞された空間１９にバルブ２８が位置することとなる。ここで、バルブ２８は、空間１９内のガス圧が所定の圧力よりも高くなった際に開弁して支持部材１８の外部へガスを排気するように構成されている。このため、図３のように筒状部材２０が作動位置へ移動した状態で、インフレータ２４から発生したガスによって空間１９のガス圧が高くなり、所定の圧力を超えると、図４に示されるように、バルブ２８が開弁する。そして、空間１９内のガスが連通部１８Ｂの開口１８Ｃを通じて外部へ排気される。また、排気によってガス圧が下がり、所定の圧力よりも低くなると、バルブ２８が閉弁される。なお、バルブ２８としては、圧力の上昇によって開弁される機械式のバルブを用いてもよく、空間１９内の圧力を検知するセンサからの信号に基づいて電気的に開弁される電磁弁などを用いてもよい。 In the state of FIG. 3, the flange portion 20 </ b> A of the tubular member 20 is in contact with the inner wall on the front end side of the support member 18. In this state, the valve 28 is positioned in the space 19 closed by the cylindrical member 20 and the support member 18. Here, the valve 28 is configured to open and exhaust the gas to the outside of the support member 18 when the gas pressure in the space 19 becomes higher than a predetermined pressure. For this reason, when the cylindrical member 20 is moved to the operating position as shown in FIG. 3, the gas pressure in the space 19 is increased by the gas generated from the inflator 24, and when the predetermined pressure is exceeded, as shown in FIG. Then, the valve 28 is opened. Then, the gas in the space 19 is exhausted to the outside through the opening 18C of the communication portion 18B. Further, when the gas pressure decreases due to exhaust and becomes lower than a predetermined pressure, the valve 28 is closed. The valve 28 may be a mechanical valve that is opened by a rise in pressure, or an electromagnetic valve that is electrically opened based on a signal from a sensor that detects the pressure in the space 19. May be used.
（作用並びに効果）
次に、本実施形態の作用並びに効果を説明する。
(Action and effect)
Next, the operation and effect of this embodiment will be described.
本実施形態に係る車両用衝撃吸収装置１０では、車両の衝突を検知又は予知した際にＥＣＵ２６からの信号に基づいてインフレータ２４からガスが発生される。そして、空間１９内のガス圧が上昇することで、筒状部材２０が支持部材１８に支持された状態で図２の収納位置から図３の作動位置へ摺動される。これにより、連結部材２２を介して筒状部材２０に連結されたフロントバンパリインフォースメント１４が車両前方側へ移動され、車両用衝撃吸収装置１０を備えていない場合よりも車両前方側で衝突体をフロントバンパリインフォースメント１４に衝突させることができる。 In the vehicle impact absorbing device 10 according to the present embodiment, gas is generated from the inflator 24 based on a signal from the ECU 26 when a vehicle collision is detected or predicted. As the gas pressure in the space 19 rises, the cylindrical member 20 is slid from the storage position in FIG. 2 to the operating position in FIG. 3 while being supported by the support member 18. Thereby, the front bumper reinforcement 14 connected to the tubular member 20 via the connecting member 22 is moved to the front side of the vehicle, and the collision body is moved to the front side of the vehicle as compared with the case where the vehicle impact absorbing device 10 is not provided. It can be made to collide with the front bumper reinforcement 14.
また、衝突体の衝突によってフロントバンパリインフォースメント１４が筒状部材２０の内部のガス圧に抗して車両後方側へ移動される。このため、フロントバンパリインフォースメント１４が移動する過程で衝突エネルギを吸収することができる。このようにして、衝突時の衝撃を吸収することができる。 Further, the front bumper reinforcement 14 is moved to the vehicle rear side against the gas pressure inside the cylindrical member 20 due to the collision of the collision body. For this reason, collision energy can be absorbed in the process in which the front bumper reinforcement 14 moves. In this way, the impact at the time of collision can be absorbed.
また、支持部材１８にバルブ２８が設けられており、このバルブ２８は、筒状部材２０が作動位置へ移動した状態で、筒状部材２０と支持部材１８とで囲まれた空間１９内のガス圧が所定の圧力よりも高くなった際に外部へガスを排気する（図４参照）。これにより、空間１９内のガス圧が上昇してフロントバンパリインフォースメント１４や筒状部材２０などが破断するのを抑制することができる。 Further, a valve 28 is provided on the support member 18, and the valve 28 is a gas in a space 19 surrounded by the tubular member 20 and the support member 18 in a state where the tubular member 20 is moved to the operating position. When the pressure becomes higher than a predetermined pressure, the gas is exhausted to the outside (see FIG. 4). Thereby, it can suppress that the gas pressure in the space 19 raises and the front bumper reinforcement 14, the cylindrical member 20, etc. fracture | rupture.
以上、本発明の実施形態及び変形例に係る車両用衝撃吸収装置１０について説明したが、本発明の要旨を逸脱しない範囲において、種々なる態様で実施し得ることは勿論である。例えば、本実施形態では、車両前部に車両用衝撃吸収装置１０を設けたが、これに限定されず、車両後部に車両用衝撃吸収装置を設けてもよい。この場合、リアサイドメンバの後端部とリアバンパリインフォースメントとの間に車両用衝撃吸収装置を取り付けることで、車両の後面衝突が検知又は予知された際に車両用衝撃吸収装置を作動させてリアバンパリインフォースメントを車両後方側へ移動させることができる。また、車両前部及び車両後部の両側に車両用衝撃吸収装置を設けてもよい。 As mentioned above, although the impact-absorbing device 10 for vehicles which concerns on embodiment and modification of this invention was demonstrated, of course, it can implement in a various aspect in the range which does not deviate from the summary of this invention. For example, in the present embodiment, the vehicle impact absorbing device 10 is provided in the front portion of the vehicle. However, the present invention is not limited to this, and the vehicle impact absorbing device may be provided in the rear portion of the vehicle. In this case, by attaching a vehicle shock absorber between the rear end of the rear side member and the rear bumper reinforcement, the vehicle shock absorber is operated when a rear collision of the vehicle is detected or predicted, and the rear bumper reinforcement is operated. Can be moved rearward of the vehicle. Moreover, you may provide the shock absorber for vehicles in the both sides of a vehicle front part and a vehicle rear part.
また、本実施形態では、図１に示されるように、左右一対のフロントサイドメンバ１６とフロントサイドメンバ１６との間にそれぞれ車両用衝撃吸収装置１０を設けたが、これに限定されない。例えば、一方のフロントサイドメンバ１６とフロントバンパリインフォースメント１４との間に車両用衝撃吸収装置１０を設け、他方のフロントサイドメンバ１６とフロントバンパリインフォースメント１４との間には、インフレータ２４を備えない構造としてもよい。この場合であっても、フロントバンパリインフォースメント１４を車両前方へ移動可能に支持することにより、車両用衝撃吸収装置１０の作動時にフロントバンパリインフォースメント１４を車両前方側へ移動させることができる。 In the present embodiment, as shown in FIG. 1, the vehicle impact absorbing device 10 is provided between the pair of left and right front side members 16 and the front side member 16. However, the present invention is not limited to this. For example, the vehicle impact absorbing device 10 is provided between one front side member 16 and the front bumper reinforcement 14, and the inflator 24 is not provided between the other front side member 16 and the front bumper reinforcement 14. It is good also as a structure. Even in this case, by supporting the front bumper reinforcement 14 so as to be movable forward of the vehicle, the front bumper reinforcement 14 can be moved forward of the vehicle when the vehicle impact absorbing device 10 is operated.
１０ 車両用衝撃吸収装置
１４ フロントバンパリインフォースメント（衝突荷重入力部材）
１６ フロントサイドメンバ（車両骨格部材）
１８ 支持部材
２０ 筒状部材
２４ インフレータ（ガス発生部）
２８ バルブ
10 Vehicle shock absorber 14 Front bumper reinforcement (collision load input member)
16 Front side member (vehicle frame member)
18 Support member 20 Cylindrical member 24 Inflator (gas generating part)
28 Valve
Claims (1)
前記衝突荷重入力部材の車両前後方向内側に設けられ、車両前後方向内側が開放された筒状に形成されると共に、車両前後方向外側の端部が前記衝突荷重入力部材側に接続された筒状部材と、
前記筒状部材の外周側に設けられて車両骨格部材に取り付けられると共に、前記筒状部材を車両前後方向内側の収納位置と車両前後方向外側の作動位置との間で車両前後方向に摺動可能に支持する支持部材と、
車両の衝突を検知又は予知した際に、前記筒状部材と前記支持部材とで囲まれた空間内でガスを発生させて前記筒状部材を前記作動位置へ摺動させるガス発生部と、
前記支持部材に設けられ、前記筒状部材が前記作動位置へ移動した状態で、かつ、前記空間内のガス圧が所定の圧力よりも高くなった際に外部へガスを排気するバルブと、
を有する車両用衝撃吸収装置。
A collision load input member provided at at least one of the vehicle front portion and the vehicle rear portion, to which a collision load is input;
A cylindrical shape that is provided in the vehicle longitudinal direction inner side of the collision load input member, is formed in a cylindrical shape that is opened in the vehicle longitudinal direction inner side, and an end portion on the vehicle longitudinal direction outer side is connected to the collision load input member side. Members,
Provided on the outer peripheral side of the tubular member and attached to the vehicle skeleton member, the tubular member can be slid in the vehicle longitudinal direction between a storage position inside the vehicle longitudinal direction and an operating position outside the vehicle longitudinal direction A supporting member that supports
A gas generating unit that generates gas in a space surrounded by the cylindrical member and the support member when the vehicle collision is detected or predicted, and slides the cylindrical member to the operating position;
A valve that is provided in the support member and exhausts gas to the outside when the tubular member is moved to the operating position and the gas pressure in the space is higher than a predetermined pressure;
A vehicle shock absorber.
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Citations (6)
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|---|---|---|---|---|
| US3751092A (en) * | 1969-11-14 | 1973-08-07 | H Granig | Impact protector for automotive vehicles |
| JPS6229982U (en) * | 1985-08-08 | 1987-02-23 | ||
| JP3063859U (en) * | 1999-05-12 | 1999-11-30 | 幸 常田 | Car |
| JP2004314733A (en) * | 2003-04-15 | 2004-11-11 | Toyota Motor Corp | Safety device for car front part |
| DE102008060716A1 (en) * | 2008-12-05 | 2010-06-17 | Daimler Ag | Crash box for passenger car, has longitudinal carrier provided in connecting area, actuator for transferring crash box from normal condition to pre-crash condition, and locking device for locking crash box in pre-crash condition |
| US20140200772A1 (en) * | 2013-01-11 | 2014-07-17 | GM Global Technology Operations LLC | Energy absorbing shield and system for small urban vehicles |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3751092A (en) * | 1969-11-14 | 1973-08-07 | H Granig | Impact protector for automotive vehicles |
| JPS6229982U (en) * | 1985-08-08 | 1987-02-23 | ||
| JP3063859U (en) * | 1999-05-12 | 1999-11-30 | 幸 常田 | Car |
| JP2004314733A (en) * | 2003-04-15 | 2004-11-11 | Toyota Motor Corp | Safety device for car front part |
| DE102008060716A1 (en) * | 2008-12-05 | 2010-06-17 | Daimler Ag | Crash box for passenger car, has longitudinal carrier provided in connecting area, actuator for transferring crash box from normal condition to pre-crash condition, and locking device for locking crash box in pre-crash condition |
| US20140200772A1 (en) * | 2013-01-11 | 2014-07-17 | GM Global Technology Operations LLC | Energy absorbing shield and system for small urban vehicles |
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