JP2006137299A - Inclusion preventing device - Google Patents

Inclusion preventing device Download PDF

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Publication number
JP2006137299A
JP2006137299A JP2004328550A JP2004328550A JP2006137299A JP 2006137299 A JP2006137299 A JP 2006137299A JP 2004328550 A JP2004328550 A JP 2004328550A JP 2004328550 A JP2004328550 A JP 2004328550A JP 2006137299 A JP2006137299 A JP 2006137299A
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impact
vehicle
airbag
inflator
sensor
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Yukio Yokoyama
幸生 横山
Akimori Watanabe
亮衛 渡辺
Masakatsu Kagawa
正勝 香川
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Hino Motors Ltd
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Hino Motors Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an inclusion preventing device capable of preventing entanglement of a collided object by front wheels when a vehicle makes a turn (in the right or left direction) by developing an airbag below a front bumper by a control means according to the traveling speed and an impact in the longitudinal direction of the vehicle. <P>SOLUTION: The inclusion preventing device comprises an airbag 3 to be developed downward of a front bumper 2, and a control means 7 to develop the airbag 3 by actuating an inflator 6 based on information obtained by a vehicle speed sensor 5 to detect the traveling speed and an impact sensor 4 to detect the impact in the longitudinal direction of the vehicle. The actuating condition of the inflator 6 is that the detected value of the vehicle speed sensor 5 is included in a predetermined traveling speed range, and the detected value is included in a predetermined impact value range. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は巻込防止装置に関するものである。   The present invention relates to an entrainment prevention device.

トラックやトレーラなどのように車側下部がボディパネルで覆われていない車両では、板状、すのこ状、網状、あるいは棒状のサイドガードを前後の車輪の間に設けて、車両の右左折時に、歩行者や二輪車の搭乗者が後車輪に巻き込まれないようにしている。   In vehicles where the lower side of the vehicle is not covered with a body panel such as a truck or trailer, plate-like, sword-like, net-like, or rod-like side guards are provided between the front and rear wheels, It prevents pedestrians and motorcycle riders from getting caught in the rear wheels.

これとは別に、トラックをはじめとする最低地上高が大きい車両のフロントバンパに、下方へ向けて展開可能なエアバッグを組み込み、前方から突入してきた小型車がキャブの下側へもぐり込まないようにすることも提案されている(例えば、特許文献1参照)。   Aside from this, airbags that can be deployed downwards are built into the front bumpers of trucks and other vehicles with a high minimum ground clearance so that small cars entering from the front do not get caught under the cab. It has also been proposed (see, for example, Patent Document 1).

そこで、特に車両の転向(右左折)時に前車輪による歩行者などの巻き込みを防ぐ手段として、特許文献1のようなエアバッグの配置を採用することが考えられる。
特開2001−171451号公報
Therefore, it is conceivable to employ an airbag arrangement as disclosed in Patent Document 1 as a means for preventing a pedestrian or the like from being caught by a front wheel particularly when the vehicle turns (turns left or right).
JP 2001-171451 A

しかしながら、特許文献1にはエアバッグの展開条件についての具体的な例示がなく、車両への実装に具体性が乏しい。   However, Patent Document 1 does not have a specific example regarding the deployment condition of the airbag, and its specificity for mounting on a vehicle is poor.

本発明は上述した実情に鑑みてなしたもので、前車輪に適した巻込防止装置を提供することを目的としている。   The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a wrapping prevention device suitable for a front wheel.

上記目的を達成するため、本発明は、フロントバンパ下方へ向けて展開可能なエアバッグと、走行速度を検出する車速センサと、車両前後方向への衝撃を検出する複数の衝撃センサと、これらのセンサにより得た情報に基づきインフレータを作動させてエアバッグを展開させる制御手段とを備え、当該制御手段によるインフレータ作動条件を、車速センサの検出値が予め定めてある走行速度範囲に含まれ且つ衝撃センサの検出値が予め定めてある衝撃値範囲に含まれた場合としている。   In order to achieve the above object, the present invention provides an airbag that can be deployed downwardly from a front bumper, a vehicle speed sensor that detects a traveling speed, a plurality of impact sensors that detect an impact in the vehicle longitudinal direction, and Control means for operating the inflator based on the information obtained by the sensor to deploy the airbag, and the inflator operating condition by the control means is included in the travel speed range in which the detection value of the vehicle speed sensor is predetermined and the impact It is assumed that the detection value of the sensor is included in a predetermined impact value range.

また、インフレータ作動条件である衝撃値範囲をフロントバンパへの物体衝突時に想定される衝撃値に合わせておく。   Also, the impact value range, which is the inflator operating condition, is matched with the impact value assumed when an object collides with the front bumper.

更に、インフレータ作動条件である走行速度範囲を車両の転向時に想定される速度に合わせておく。   Furthermore, the traveling speed range which is an inflator operation condition is matched with the speed assumed when the vehicle turns.

本発明では、走行速度が予め定めてある範囲に含まれ且つ物体の衝突によって車両前後方向に作用した衝撃が予め定めてある範囲に含まれると、インフレータが作動してエアバッグが展開する。   In the present invention, when the traveling speed is included in the predetermined range and the impact applied in the vehicle front-rear direction due to the collision of the object is included in the predetermined range, the inflator is activated and the airbag is deployed.

本発明によれば、下記のような優れた効果を奏し得る。   According to the present invention, the following excellent effects can be obtained.

(1)走行速度と車両前後方向への衝撃に応じて制御手段が、フロントバンパの下方へエアバッグを展開させるので、車両の転向(右左折)時に衝突した物体の前車輪による巻き込みを防げる。   (1) Since the control means deploys the airbag below the front bumper according to the traveling speed and the impact in the longitudinal direction of the vehicle, it is possible to prevent the object colliding with the front wheel from colliding when the vehicle turns (turns left or right).

(2)また、衝撃値範囲を定めてあるので、路面状態がよくない道路を車両が走行する際に、物体が衝突していないのに誤ってエアバッグが展開することがない。   (2) Further, since the impact value range is defined, when the vehicle travels on a road with poor road surface conditions, the airbag will not be unintentionally deployed even though no object collides.

以下、本発明の実施の形態を図示例とともに説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図1乃至図4は本発明の巻込防止装置の実施の形態の一例を示すもので、この巻込防止装置は、通常時にはキャブ1の前面下部にあるフロントバンパ2の裏面側に折りたたんだ状態で格納され且つ膨張時にはフロントバンパ2の下方へ向けて車両幅方向全長にわたり展開可能なエアバッグ3と、フロントバンパ2の左側寄り部分及び右側寄り部分の裏面側に位置し且つ車両前後方向への衝撃を検出する衝撃センサ4と、走行速度を検出する車速センサ5と、エアバッグ3に膨張圧として窒素を付与するインフレータ6の制御手段7などを備えている。   FIGS. 1 to 4 show an example of an embodiment of the wrapping prevention device according to the present invention. This wrapping prevention device is normally folded to the back side of the front bumper 2 at the lower front portion of the cab 1. And the airbag 3 that can be deployed over the entire length in the vehicle width direction toward the lower side of the front bumper 2 when inflated, and located on the back side of the left side portion and the right side portion of the front bumper 2 and in the vehicle longitudinal direction. An impact sensor 4 for detecting an impact, a vehicle speed sensor 5 for detecting a traveling speed, a control means 7 for an inflator 6 for applying nitrogen as an inflation pressure to the airbag 3 and the like are provided.

制御手段7は、運転者に情報を提供するためのディスプレイ9と、前記衝撃センサ4の信号、及び車速センサ5の信号に基づき、常にディスプレイ9に情報を伝達し且つエアバッグ3展開用のインフレータ6を作動させる演算ユニット10などで構成されている。   The control means 7 always transmits information to the display 9 based on the display 9 for providing information to the driver, the signal of the impact sensor 4 and the signal of the vehicle speed sensor 5, and the inflator for deploying the airbag 3 6 and the like.

衝撃センサ4は、サイドフロントバンパ2を左右のサイドレール21に支持するためのバンパブラケット22に取り付けてある。   The impact sensor 4 is attached to a bumper bracket 22 for supporting the side front bumper 2 on the left and right side rails 21.

衝撃センサ4には、圧電素子や抵抗線歪みゲージを用いて衝撃により発生する力を検知する方式のもの、あるいは永久磁石とコイルを用いて衝撃による相対運動を検知する方式のものなどを適宜に選んで採用する。   As the impact sensor 4, a sensor that detects a force generated by an impact using a piezoelectric element or a resistance wire strain gauge, or a sensor that detects a relative motion due to an impact using a permanent magnet and a coil is appropriately used. Select and adopt.

ディスプレイ9、及び演算ユニット10は、キャブ1内部に設置してある。   The display 9 and the arithmetic unit 10 are installed inside the cab 1.

上記演算ユニット10は、段階S11(自己チェック機能に基づく異常の有無)、段階S12(車速センサ5により得た検出値と予め設定してある走行速度下限値V1及び上限値V2との対比)、及び段階S13(衝撃センサ4により得た検出値と予め設定してある衝撃値範囲Aとの対比)の順序で判定を行なったうえ、ディスプレイ9に状況を表示し、また、判定結果に応じてインフレータ6を起動させる。   The arithmetic unit 10 includes step S11 (presence / absence of abnormality based on the self-check function), step S12 (contrast between the detected value obtained by the vehicle speed sensor 5 and the preset traveling speed lower limit value V1 and upper limit value V2), And in step S13 (contrast between the detection value obtained by the impact sensor 4 and the preset impact value range A), the situation is displayed on the display 9, and according to the determination result. The inflator 6 is activated.

走行速度下限値V1並びに上限値V2は、車両の転向(右左折)時に見合うように走行速度下限値V1を時速5kmとし、また、走行速度上限値V2を時速25kmとしている。   The travel speed lower limit value V1 and the upper limit value V2 are set such that the travel speed lower limit value V1 is 5 km / h and the travel speed upper limit value V2 is 25 km / h so that it can be met when the vehicle turns (turns left or right).

衝撃値範囲Aは、走行速度下限値V1から走行速度上限値V2までの間で、キャブ1の前面部分に物体がぶつかった場合に想定される前後方向への衝撃(例えば、物体の質量、弾力性、脆さなどの要件を見込んだ加速度)に基づくものである(当然、車両の固有振動数や原動機の起振力などの共振の要素も考慮してあり、衝撃値範囲Aは、路面状態が良好でない道路を走行する際に車両に作用する前後方向への走行衝撃C1を充分に超える値となっている)。   The impact value range A is an impact in the front-rear direction when an object hits the front portion of the cab 1 between the traveling speed lower limit value V1 and the traveling speed upper limit value V2 (for example, the mass and elasticity of the object). (Accordingly, the acceleration considering the requirements such as stability and brittleness) (Of course, resonance factors such as the natural frequency of the vehicle and the vibration force of the prime mover are taken into consideration, and the impact value range A is the road surface condition) Is a value that sufficiently exceeds the traveling impact C1 in the front-rear direction acting on the vehicle when traveling on an unfavorable road).

すなわち、自己チェック機能によって各センサ4、5や配線などに異常が認められない限りは、走行速度、及び車両前後方向へ作用する衝撃の大きさに応じてインフレータ6が起動し、エアバッグ3が展開する。   That is, as long as no abnormality is recognized in the sensors 4, 5 and wiring by the self-checking function, the inflator 6 is activated according to the traveling speed and the magnitude of the impact acting in the vehicle longitudinal direction, and the airbag 3 is expand.

また、自己チェック機能によって各センサ4、5や配線などに異常が認められた場合は、その事実がディスプレイ9に表示され、故障発生を運転者が認識することができる。   Further, when an abnormality is recognized in each of the sensors 4, 5 and wiring by the self-check function, the fact is displayed on the display 9, and the driver can recognize the occurrence of the failure.

具体的に述べると、走行速度が時速5kmを上回り且つ時速25kmを超えない範囲である場合(車両が転向の態勢を整えたとき)には、段階S13の判定結果、つまり、物体の衝突によって左右の衝撃センサ4のいずれかの検出値が前述の衝撃値範囲Aに含まれたとき(衝撃センサ4の検出値は、図2及び図3に示すようにセンサ取付位置から衝撃力Fの作用点までの距離などに応じて異なる)にエアバッグ3が展開する。   More specifically, when the traveling speed exceeds 5 km / h and does not exceed 25 km / h (when the vehicle is ready to turn), the result of the determination in step S13, that is, the collision of the object When the detected value of any of the impact sensors 4 is included in the above-described impact value range A (the detected value of the impact sensor 4 is the operating point of the impact force F from the sensor mounting position as shown in FIGS. 2 and 3). The air bag 3 is deployed at different distances depending on the distance up to.

これにより、万が一、歩行者や二輪車が左折もしくは右折を開始した車両にぶつかると直ちにエアバッグ3が展開し、路上に倒れた歩行者、あるいは二輪車の搭乗者の前車輪による巻き込みを防ぐことができる。   As a result, if a pedestrian or two-wheeled vehicle hits a vehicle that has started to turn left or right, the airbag 3 is immediately deployed, and it is possible to prevent the pedestrian who has fallen on the road or the occupant of the motorcycle from being caught by the front wheels. .

更に、衝撃値範囲Aが走行衝撃C1を完全に上回っているので、路面状態があまりよくない道路の走行に際し、物体が車両に衝突していないのに誤ってエアバッグ3が展開することがない。   Further, since the impact value range A is completely greater than the traveling impact C1, the air bag 3 will not be unintentionally deployed even when the object is not colliding with the vehicle when traveling on a road where the road surface condition is not so good. .

なお、本発明の巻込防止装置は、上述した実施の形態のみに限定されるものではなく、本発明の要旨を逸脱しない範囲内において変更を加え得ることは勿論である。   Note that the entrainment prevention device of the present invention is not limited to the above-described embodiment, and it is needless to say that changes can be made without departing from the scope of the present invention.

本発明の巻込防止装置は、様々な車種に適用することができる。   The entrainment prevention device of the present invention can be applied to various vehicle types.

本発明の巻込防止装置の実施の形態の一例を示す概念図である。It is a conceptual diagram which shows an example of embodiment of the entrapment prevention apparatus of this invention. 図1における衝撃センサの取付位置を示す概念図であるIt is a conceptual diagram which shows the attachment position of the impact sensor in FIG. 走行速度と衝撃センサの検出値と衝撃値範囲と走行衝撃の関係を示す線図である。It is a diagram which shows the relationship between a running speed, the detected value of an impact sensor, an impact value range, and a running impact. 図1に示す巻込防止装置に用いる制御手段のブロック図である。It is a block diagram of the control means used for the entrainment prevention apparatus shown in FIG.

符号の説明Explanation of symbols

2 フロントバンパ
3 エアバッグ
4 衝撃センサ
5 車速センサ
6 インフレータ
7 制御手段
2 Front bumper 3 Airbag 4 Impact sensor 5 Vehicle speed sensor 6 Inflator 7 Control means

Claims (3)

フロントバンパ下方へ向けて展開可能なエアバッグと、走行速度を検出する車速センサと、車両前後方向への衝撃を検出する複数の衝撃センサと、これらのセンサにより得た情報に基づきインフレータを作動させてエアバッグを展開させる制御手段とを備え、当該制御手段によるインフレータ作動条件を、車速センサの検出値が予め定めてある走行速度範囲に含まれ且つ衝撃センサの検出値が予め定めてある衝撃値範囲に含まれた場合としたことを特徴とする巻込防止装置。   An airbag that can be deployed to the lower side of the front bumper, a vehicle speed sensor that detects a traveling speed, a plurality of impact sensors that detect an impact in the longitudinal direction of the vehicle, and an inflator that operates based on information obtained by these sensors. Control means for deploying the airbag, and the inflator operating condition by the control means is included in a travel speed range in which the detection value of the vehicle speed sensor is predetermined and the detection value of the impact sensor is predetermined. An entanglement preventing device characterized by being included in the range. インフレータ作動条件である衝撃値範囲をフロントバンパへの物体衝突時に想定される衝撃値に合わせた請求項1に記載の巻込防止装置。   The entanglement prevention device according to claim 1, wherein an impact value range which is an inflator operation condition is matched with an impact value assumed at the time of an object collision with the front bumper. インフレータ作動条件である走行速度範囲を車両の転向時に想定される速度に合わせた請求項1あるいは請求項2のいずれかに記載の巻込防止装置。   The entanglement prevention device according to claim 1 or 2, wherein a traveling speed range which is an inflator operating condition is adjusted to a speed assumed when the vehicle turns.
JP2004328550A 2004-11-12 2004-11-12 Inclusion preventing device Pending JP2006137299A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007076462A (en) * 2005-09-13 2007-03-29 Mazda Motor Corp Pedestrian protection device for vehicle
WO2018097040A1 (en) * 2016-11-24 2018-05-31 株式会社Soken Collision detection device
WO2019221028A1 (en) * 2018-05-17 2019-11-21 株式会社デンソー Collision detection apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007076462A (en) * 2005-09-13 2007-03-29 Mazda Motor Corp Pedestrian protection device for vehicle
JP4614087B2 (en) * 2005-09-13 2011-01-19 マツダ株式会社 Pedestrian protection device for vehicles
WO2018097040A1 (en) * 2016-11-24 2018-05-31 株式会社Soken Collision detection device
WO2019221028A1 (en) * 2018-05-17 2019-11-21 株式会社デンソー Collision detection apparatus

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