JP2013023027A - Collision detecting device for vehicle - Google Patents
Collision detecting device for vehicle Download PDFInfo
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- JP2013023027A JP2013023027A JP2011158215A JP2011158215A JP2013023027A JP 2013023027 A JP2013023027 A JP 2013023027A JP 2011158215 A JP2011158215 A JP 2011158215A JP 2011158215 A JP2011158215 A JP 2011158215A JP 2013023027 A JP2013023027 A JP 2013023027A
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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
- B60R19/48—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds
- B60R19/483—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds with obstacle sensors of electric or electronic type
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
Description
本発明は、バンパにおける圧力変化に基づいて物体の衝突を検知する車両用衝突検知装置に関する。 The present invention relates to a vehicle collision detection device that detects an object collision based on a pressure change in a bumper.
車両が歩行者と衝突した際、歩行者へのダメージを軽減する歩行者保護装置が実用化されている。この歩行者保護装置は、歩行者がエンジンフードにたたきつけられる衝撃を和らげるために、エンジンフードの後端を衝突検知後瞬時に上昇させ、上昇した分のストロークを緩衝用機構で支えるというもので、ポップアップフード、ポップアップエンジンフード、アクティブボンネット、アクティブフード等の名称で呼ばれている。また別の形態として、車体外部のエンジンフード上からフロントウインド下部にかけてエアバッグを展開し、歩行者の衝撃を緩衝するというものもあり、カウルエアバッグ、フードエアバッグ等の名称で呼ばれている。 Pedestrian protection devices that reduce damage to pedestrians when a vehicle collides with pedestrians have been put into practical use. This pedestrian protection device instantly raises the rear end of the engine hood after collision detection in order to reduce the impact of the pedestrian hitting the engine hood, and supports the increased stroke with a buffer mechanism. It is called by names such as pop-up hood, pop-up engine hood, active bonnet, and active hood. As another form, an airbag is deployed from the engine hood outside the vehicle body to the lower part of the front window to cushion the impact of pedestrians, and is called by the names of cowl airbags, hood airbags, etc. .
これらの装置では、バンパ部に衝突検知装置を設け、センサを用いて物体が接触したことを検知して装置を作動させる仕組みを持っている。このようなバンパ内にチャンバ部材を配設して、バンパに物体が衝突した際のチャンバ内の圧力変化を検出するよう構成された車両用衝突検知装置が提案されている（例えば特許文献１、２）。 In these apparatuses, a collision detection device is provided in the bumper unit, and a mechanism is used to detect the contact of an object using a sensor and operate the device. There has been proposed a vehicle collision detection device configured to detect a pressure change in a chamber when an object collides with the bumper by arranging a chamber member in such a bumper (for example, Patent Document 1, 2).
特許文献１、２記載の車両用衝突検知装置では、バンパへ物体が衝突すると、バンパ内でバンパリーンフォースの前面に配設されたチャンバ部材が変形することによってチャンバ内に圧力変化が発生し、その圧力変化が圧力センサによって検出される。また、チャンバ部材は、車幅方向中央部において、チャンバ本体部から、チャンバ本体部に対して車両の後方側でかつ上方に延設部を設け、延設部に圧力センサを取り付けることにより、バンパリーンフォースの内部に圧力センサを配置する場合に比べ、圧力センサの取り付け作業を容易にしていた。 In the vehicle collision detection devices described in Patent Documents 1 and 2, when an object collides with the bumper, a pressure change is generated in the chamber by deforming a chamber member disposed on the front surface of the bumper force in the bumper. The pressure change is detected by a pressure sensor. Further, the chamber member is provided with an extending portion on the rear side of the vehicle and above the chamber main body portion from the chamber main body portion at the center in the vehicle width direction, and a pressure sensor is attached to the extending portion. Compared with the case where the pressure sensor is disposed inside the parin force, the pressure sensor is easily attached.
圧力センサがバンパリーンフォースの上方に配置される場合、バンパリーンフォース上面とバンパカバー内面によって囲まれる空間に、チャンバの延設部と圧力センサとが配置されることになる。一方、バンパカバーの形状は、主に車両の外観意匠のデザインから決定される。また、バンパリーンフォースは、車種毎に必要強度を保つための構造が様々な方法で工夫されており、バンパリーンフォース上面とバンパカバー内面とによって囲まれる空間が狭小となることがある。これらの場合、圧力センサを設置するための十分な空間が確保できないことになる。
本発明は、上述した問題点に鑑みてなされたものであり、圧力チャンバ式の車両用衝突検知装置において、バンパカバーの形状やバンパリーンフォースの構造の違いによる影響が少ない、搭載性に優れた車両用衝突検知装置を提供することを目的とする。
When the pressure sensor is arranged above the bumper force, the chamber extension and the pressure sensor are arranged in a space surrounded by the upper surface of the bumper force and the inner surface of the bumper cover. On the other hand, the shape of the bumper cover is determined mainly from the design of the exterior design of the vehicle. In addition, the structure of the bumper force for maintaining the required strength for each vehicle type has been devised by various methods, and the space surrounded by the upper surface of the bumper force and the inner surface of the bumper cover may become narrow. In these cases, a sufficient space for installing the pressure sensor cannot be secured.
The present invention has been made in view of the above-described problems, and in a pressure chamber type vehicle collision detection device, there is little influence due to the difference in the shape of the bumper cover and the structure of the bumper force, and it has excellent mountability. An object of the present invention is to provide a vehicle collision detection device.
上記目的を達成するためになされた請求項１に記載の発明は、車両バンパ内でバンパリーンフォースの前面に配設されチャンバ空間を内部に形成してなるチャンバ本体を有するチャンバ部材と、前記チャンバ空間内の圧力を検出する圧力センサとを備え、前記圧力センサによる圧力検出結果に基づいて前記車両バンパへの衝突を検知するように構成された車両用衝突検知装置において、前記チャンバ部材は、前記バンパリーンフォースの車幅方向端部よりも車両側方に突出する前記チャンバ本体の端部領域から車両後方側へ延設されて前記チャンバ空間の一部を形成するチャンバ延設部を備え、前記圧力センサは、前記チャンバ延設部に取り付けられることを特徴とする。 In order to achieve the above-mentioned object, the invention according to claim 1 comprises a chamber member having a chamber body disposed in front of a bumper force in a vehicle bumper and having a chamber space formed therein, and the chamber A vehicular collision detection device configured to detect a collision with the vehicle bumper based on a pressure detection result by the pressure sensor. A chamber extending portion that extends from the end region of the chamber body that protrudes toward the vehicle side from the vehicle width direction end portion of the bumper force to the vehicle rear side to form a part of the chamber space; The pressure sensor is attached to the chamber extension.
この構成によれば、チャンバ本体の端部領域から車両後方側へ延設されたチャンバ延設部に圧力センサが取り付けられる構造であるため、圧力センサをバンパリーンフォースの上方領域に配置する必要がなく、車両の多様な意匠やバンパリーンフォース構造の違いにも対応でき、汎用性が高く多くの車種に適用可能な搭載性に優れた車両用衝突検知装置とすることができる。また、電子部品である圧力センサが衝突の衝撃を受ける役割を持つバンパリーンフォースの車幅方向端部よりも外側に配置されるため、衝突時に圧力センサが直接的な打撃を受け損傷する可能性を低減することができる。 According to this configuration, since the pressure sensor is attached to the chamber extending portion that extends from the end region of the chamber body to the vehicle rear side, it is necessary to dispose the pressure sensor in the upper region of the bumper force. In addition, it is possible to cope with various designs of vehicles and differences in the bumper force structure, and it is possible to provide a vehicular collision detection device that is highly versatile and excellent in mountability applicable to many vehicle types. In addition, the pressure sensor, which is an electronic component, is placed outside the end in the vehicle width direction of the bumper force that has the role of receiving the impact of a collision, so the pressure sensor may be directly hit and damaged in the event of a collision. Can be reduced.
請求項２に記載の発明は、チャンバ部材が前記チャンバ延設部に取り付けられた前記圧力センサの車両前方側を覆うように、前記チャンバ本体が延長形成されていることを特徴とする。この構成によれば、車両の左側前方、または右側前方の角部付近で衝突が起こった場合でも、圧力センサの前方にチャンバ本体の一部が配置されているため、衝突時に圧力センサが直接的な打撃を受け損傷する可能性を低減する効果を更に高めることができる。 The invention according to claim 2 is characterized in that the chamber main body is formed to extend so that a chamber member covers a vehicle front side of the pressure sensor attached to the chamber extending portion. According to this configuration, even when a collision occurs near the corner on the left side of the vehicle or the front side of the right side, a part of the chamber body is disposed in front of the pressure sensor, so that the pressure sensor is directly It is possible to further enhance the effect of reducing the possibility of being damaged by being hit hard.
請求項３に記載の発明は、圧力センサが、前記チャンバ延設部に対して側方から取り付けられていることを特徴とする。この構成によれば、圧力センサ本体部の外形寸法が最小となる検知方向を車幅方向とするため、圧力センサを配置するために車幅方向に要する寸法を最小にできる。 The invention according to claim 3 is characterized in that a pressure sensor is attached to the chamber extending portion from the side. According to this configuration, since the detection direction in which the outer dimension of the pressure sensor main body is minimized is the vehicle width direction, the dimension required in the vehicle width direction for disposing the pressure sensor can be minimized.
請求項４に記載の発明は、圧力センサが、前記チャンバ延設部に対して上方から取り付けられていることを特徴とする。この構成によれば、圧力センサ本体部の外形寸法が最小となる検知方向を、車両上下方向とするため、圧力センサが車両上下方向に要する寸法を最小にできる。 According to a fourth aspect of the present invention, a pressure sensor is attached to the chamber extension portion from above. According to this configuration, since the detection direction in which the outer dimension of the pressure sensor main body is minimized is the vehicle vertical direction, the dimension required by the pressure sensor in the vehicle vertical direction can be minimized.
請求項５に記載の発明は、圧力センサのコネクタが、相手側コネクタが車両後方側から挿入されるように配置されたことを特徴とする。この構成によれば、コネクタ部が衝突時に衝撃を受けにくい車両後方側に配置されるため、前方からの衝突時にコネクタが外れにくくすることができる。 The invention according to claim 5 is characterized in that the connector of the pressure sensor is arranged so that the mating connector is inserted from the vehicle rear side. According to this configuration, since the connector portion is arranged on the vehicle rear side that is not easily subjected to an impact at the time of a collision, the connector can be hardly detached at the time of a collision from the front.
請求項６に記載の発明は、チャンバ延設部が、前記チャンバ部材の車幅方向における両側の端部領域からそれぞれ延設され、前記圧力センサは、前記各チャンバ延設部にそれぞれ取りつけられることを特徴とする。この構成によれば、２つの圧力センサで検知することになるため、精度を向上させることができ、また、冗長性を向上させることができる。 According to a sixth aspect of the present invention, the chamber extending portions are respectively extended from end regions on both sides in the vehicle width direction of the chamber member, and the pressure sensors are respectively attached to the chamber extending portions. It is characterized by. According to this configuration, detection is performed by two pressure sensors, so that accuracy can be improved and redundancy can be improved.
以下、本発明の車両用衝突検知装置の具体的な実施形態について図面を参照しつつ説明
する。
Hereinafter, specific embodiments of the vehicle collision detection device of the present invention will be described with reference to the drawings.
＜第１の実施形態＞
本発明の実施形態に係る車両用衝突検知装置１は、図１（ａ）、（ｂ）に示すように、車両前方のバンパ２への物体の衝突を検知し、歩行者保護装置３を起動するよう構成された装置である。バンパ２と、バンパ２内に配設され、チャンバ空間３が内部に形成されるチャンバ部材４と、チャンバ空間３内の圧力変化を検出する圧力センサ５と、歩行者保護装置ＥＣＵ（ＥＣＵ：Electronic Control Unit）６とを備えている。
<First Embodiment>
As shown in FIGS. 1A and 1B, the vehicle collision detection device 1 according to the embodiment of the present invention detects a collision of an object with a bumper 2 in front of the vehicle and activates the pedestrian protection device 3. An apparatus configured to do so. A bumper 2, a chamber member 4 disposed in the bumper 2 and having a chamber space 3 formed therein, a pressure sensor 5 for detecting a pressure change in the chamber space 3, and a pedestrian protection device ECU (ECU: Electronic) Control Unit) 6.
バンパ２は、バンパカバー９、チャンバ部材４、バンパアブソーバ１０、バンパリーンフォース１１を主体として構成されている。 The bumper 2 includes a bumper cover 9, a chamber member 4, a bumper absorber 10, and a bumper force 11 as main components.
バンパカバー９はバンパ２の構成部品を覆うように設けられるポリプロピレン等の樹脂製の部材である。バンパ２の外観を構成すると同時に車両全体の外観の一部を構成し、外側の一部または全体はボディと同色に塗装されることが多い。 The bumper cover 9 is a resin member such as polypropylene provided so as to cover the components of the bumper 2. The external appearance of the bumper 2 is configured at the same time as a part of the overall appearance of the vehicle, and a part or the entire exterior is often painted in the same color as the body.
チャンバ部材４は、バンパ２内で大部分がバンパリーンフォース１１の前面の略上半分に配置され、車幅方向に延びる軟質ポリエチレン等の合成樹脂からなる中空の部材である。衝突時の圧力創出の作用を持つ部材であり、車幅方向（車両左右方向）に長く延び、図１（ａ）のＡ部を断面図として示す図２のように、主に衝突時の圧力発生を受け持つ本体部１２と圧力センサ５を取り付けるために設けられた延設部１３とからなる。本体部１２は、端部領域がバンパリーンフォース１１の車幅方向左端部より、左側方向に伸びており、延設部１３はこの端部領域から車両後方側へ突出するように設けられている。両者は一体に形成されていることが望ましい。チャンバ部材４の内部にはチャンバ空間３が形成されている。チャンバ空間３は本体部１２と延設部１３とで一つのものである。なお、図２、３、４ではバンパカバー９は省略してある。 The chamber member 4 is a hollow member made of a synthetic resin such as soft polyethylene that is disposed in the upper half of the front surface of the bumper force 11 in the bumper 2 and extends in the vehicle width direction. It is a member that has the action of creating pressure at the time of collision, extends long in the vehicle width direction (vehicle left-right direction), and mainly shows the pressure at the time of collision as shown in FIG. 2 showing a section A of FIG. It consists of a main body portion 12 responsible for generation and an extending portion 13 provided for attaching the pressure sensor 5. The main body 12 has an end region extending leftward from the left end in the vehicle width direction of the bumper force 11, and the extending portion 13 is provided so as to protrude from the end region toward the vehicle rear side. . It is desirable that both are formed integrally. A chamber space 3 is formed inside the chamber member 4. The chamber space 3 is a single body portion 12 and extending portion 13. Note that the bumper cover 9 is omitted in FIGS.
チャンバ空間３はチャンバ部材４に囲覆されているが、密閉されてはおらず、不図示の一部の狭小部分で外気と連通し大気圧になっている。これにより標高差や気温変化などによる外気との気圧差が生じないようにして、衝突検知が標高や気温の変化の影響を受けない。 The chamber space 3 is surrounded by the chamber member 4 but is not hermetically sealed and communicates with the outside air at a part of a narrow portion (not shown) and is at atmospheric pressure. This prevents a pressure difference from the outside air due to an altitude difference or temperature change, so that collision detection is not affected by changes in altitude or temperature.
バンパアブソーバ１０は、バンパリーンフォース１１の前面の略下半分、チャンバ部材４の下部に配置されており、バンパ２において衝撃吸収の作用を受け持つ部材である。たとえば発泡させたポリプロピレン等を用いることができる。 The bumper absorber 10 is a member that is disposed in a substantially lower half of the front surface of the bumper force 11 and in a lower portion of the chamber member 4, and has an impact absorbing function in the bumper 2. For example, foamed polypropylene or the like can be used.
バンパリーンフォース１１はバンパ２内に配設されて車幅方向に延びるアルミ等の金属製の梁状部材であって、図１に示すように車両前後方向に延びる一対の金属製部材であるサイドメンバ１４の前端に取り付けられていて、バンパ２全体を保持している。 The bumper force 11 is a beam-like member made of metal such as aluminum which is disposed in the bumper 2 and extends in the vehicle width direction, and is a pair of metal members extending in the vehicle longitudinal direction as shown in FIG. It is attached to the front end of the member 14 and holds the entire bumper 2.
圧力センサ５は、気体圧力変化を検出可能なセンサ装置であり、圧力に比例した信号を出力し、歩行者保護装置ＥＣＵ６と伝送線を介して電気的に接続されている。図２のように、チャンバ部材４の延設部１３に設けられた穴を介して圧力センサ５の一部がチャンバ空間３内に差し込まれ、接触部は接着剤を塗布することや、ゴムパッキンを使用する等の手法により密封されており、図示しないがインサート部材をネジ止めする等の従来の技術を使って固定され、チャンバ空間３内の空気の圧力変化を検出可能に構成されている。 The pressure sensor 5 is a sensor device that can detect a change in gas pressure, outputs a signal proportional to the pressure, and is electrically connected to the pedestrian protection device ECU 6 via a transmission line. As shown in FIG. 2, a part of the pressure sensor 5 is inserted into the chamber space 3 through a hole provided in the extending portion 13 of the chamber member 4, and the contact portion is applied with an adhesive or rubber packing. Although not shown, it is fixed using a conventional technique such as screwing an insert member, and is configured to detect a change in pressure of air in the chamber space 3.
圧力センサ５は側方から取り付けられている。圧力センサ５は、検知精度を確保するため、ある程度の受圧面の検知面積が必要となり、圧力センサ５の本体部の外形は図３に示すように、厚さ方向である検知方向の寸法が２０ミリ程度であれば、幅方向は３０ミリ程度となっている。長さ方向は回路が配置される部分を含むためさらに大きな寸法となる。 The pressure sensor 5 is attached from the side. In order to ensure detection accuracy, the pressure sensor 5 needs a certain detection area of the pressure receiving surface, and the outer shape of the main body of the pressure sensor 5 has a thickness direction of 20 as shown in FIG. If it is about mm, the width direction is about 30 mm. Since the length direction includes a portion where the circuit is arranged, the length direction becomes larger.
したがって、圧力センサ５が側方から取り付けていることにより、車両左側に必要とする圧力センサ５のスペースを最小にする。また、圧力センサ５は車両後方側にコネクタ部１５を有し歩行者保護装置ＥＣＵ６と伝送線を介して電気的に接続されるように配置されている。コネクタ部１５を後方にして、接続される相手側のコネクタ（不図示）を後方から挿入、固定することにより、衝突時に電気的な接続が断たれにくくしている。 Therefore, the pressure sensor 5 attached from the side minimizes the space required for the pressure sensor 5 on the left side of the vehicle. Moreover, the pressure sensor 5 has the connector part 15 in the vehicle rear side, and is arrange | positioned so that it may be electrically connected with pedestrian protection apparatus ECU6 via a transmission line. By inserting and fixing a mating connector (not shown) to be connected from the rear with the connector portion 15 at the rear, electrical connection is less likely to be cut off in the event of a collision.
チャンバ部材４において、延設部１３を本体部１２の後方に設けているが、これは図２に二点鎖線の曲線で示したヘッドランプの配置を避けて圧力センサ５を設けるためである。近年ヘッドランプ回りの体積は増大する傾向にあり、夜間の死亡事故の要因の一つとされる視認性の悪さを改善するため、光源に高輝度放電灯を使用したＨＩＤランプ（High Intensity Discharge lamp、ＨＩＤは登録商標）が採用される例がある。この場合ランプハウジング下部にバラスト（安定器）と呼ばれるＤＣ−ＤＣコンバータ等を含む電子回路が配置される。また、モータやアクチュエータを使って、ステアリングの切れ角等に応じてヘッドランプの光軸を変えるＡＦＳ（登録商標、Adaptive Front-lighting System）も実用化されており、この場合はランプハウジング内または外に動作機構が設けられる。延設部１３を本体部１２の後方に設けることにより、安全のためのこれらの新たな機構と共存することを可能としている。 In the chamber member 4, the extending portion 13 is provided at the rear of the main body portion 12, for the purpose of providing the pressure sensor 5 while avoiding the headlamp arrangement shown by the two-dot chain line curve in FIG. 2. In recent years, the volume around the headlamp has been increasing, and in order to improve the poor visibility, which is one of the causes of nighttime fatal accidents, an HID lamp (High Intensity Discharge lamp, There is an example in which HID is a registered trademark. In this case, an electronic circuit including a DC-DC converter called a ballast (ballast) is disposed at the lower part of the lamp housing. In addition, AFS (registered trademark, Adaptive Front-lighting System) that uses a motor or actuator to change the optical axis of the headlamp according to the steering angle, etc. has been put into practical use. Is provided with an operating mechanism. By providing the extended portion 13 behind the main body portion 12, it is possible to coexist with these new mechanisms for safety.
通常の衝突はバンパリーンフォースの長手方向（車幅方向）の範囲内で起こることが多いため、従来の圧力センサ５の配置では、衝突時に、直接圧力センサ５が衝撃を受ける場合が考えられる。圧力センサ５をバンパリーンフォース１１の左端部よりも側方（左外側）に設けることにより、衝突時に直接圧力センサが衝撃を受ける可能性が減少する。 Since a normal collision often occurs in the longitudinal direction (vehicle width direction) of the bumper force, it is conceivable that the conventional pressure sensor 5 is subjected to an impact directly during the collision. By providing the pressure sensor 5 on the side (left outside) of the left end portion of the bumper force 11, the possibility that the pressure sensor is directly impacted at the time of a collision is reduced.
図１（ａ）、（ｂ）に示す車速センサ７は、車両の走行速度の大きさを検出する既設の速度センサであり、歩行者保護装置ＥＣＵ６と伝送線を介して電気的に接続されている。 A vehicle speed sensor 7 shown in FIGS. 1A and 1B is an existing speed sensor that detects the magnitude of the traveling speed of the vehicle, and is electrically connected to the pedestrian protection apparatus ECU 6 via a transmission line. Yes.
歩行者保護装置ＥＣＵ６は、圧力センサ５や車速センサ７の検出結果等に基づいて所定のアルゴリズムにしたがって衝突を判定する。衝突と判定した場合には、歩行者保護装置８に対し信号を出力し、歩行者保護装置８を作動させる。歩行者保護装置８はポップアップフード、ポップアップエンジンフード、アクティブボンネット、アクティブフード、カウルエアバッグ、フードエアバッグ等の名称で呼ばれる公知のものであってよく、エンジンフードの後端を衝突検知後瞬時に上昇させ、上昇した分のストロークを緩衝用機構で支え、歩行者がエンジンフードにたたきつけられる衝撃を和らげ保護するというものか、または、車体外部のエンジンフード上からフロントウインド下部にかけてエアバッグを展開し歩行者の衝撃を緩衝するというもの等である。 The pedestrian protection device ECU 6 determines a collision according to a predetermined algorithm based on detection results of the pressure sensor 5 and the vehicle speed sensor 7 and the like. When it determines with a collision, a signal is output with respect to the pedestrian protection apparatus 8, and the pedestrian protection apparatus 8 is operated. The pedestrian protection device 8 may be a known device called by a name such as a pop-up hood, a pop-up engine hood, an active hood, an active hood, a cowl airbag, or a hood airbag. It can be lifted and supported by a shock absorbing mechanism to mitigate the impact of pedestrians hitting the engine hood, or it can be deployed from the engine hood outside the vehicle body to the lower part of the front window. For example, the shock of a pedestrian is buffered.
次に、本実施形態における車両用衝突検知装置の衝突時の動作について説明する。衝突時には、バンパ２は変形し、衝撃によりバンパカバー９が変形し、つづいてバンパアブソーバ１０が衝撃を吸収しつつ変形すると同時に、チャンバ部材４も変形し、チャンバ空間３の主に本体部１２の体積は急激に減少する。このとき、一部で外気と連通していても、狭小であるため圧力は急上昇し、チャンバ空間３を共通とする延設部１３を通じて圧力センサ５を押圧する。 Next, the operation | movement at the time of the collision of the vehicle collision detection apparatus in this embodiment is demonstrated. At the time of the collision, the bumper 2 is deformed, the bumper cover 9 is deformed by the impact, and the bumper absorber 10 is deformed while absorbing the impact. At the same time, the chamber member 4 is also deformed, and the chamber space 3 mainly includes the main body 12. The volume decreases rapidly. At this time, even if the air is partially communicated with the outside air, the pressure rapidly rises due to the narrowness, and the pressure sensor 5 is pressed through the extending portion 13 having the chamber space 3 in common.
以上、詳述したことから明らかなように、本実施形態によれば、車両バンパ２内でバンパリーンフォース１１の前面に配設され、チャンバ空間３を内部に形成してなるチャンバ部材４と、チャンバ空間３内の圧力を検出する圧力センサ５とを備え、圧力センサ５による圧力検出結果に基づいて前記車両バンパへの衝突を検知するように構成された車両用衝突検知装置１において、チャンバ部材４は、バンパリーンフォース１１の車幅方向端部よりも側方に突出するチャンバ本体１２の端部領域から車両後方側へ延設されてチャンバ空間３の一部を形成するチャンバ延設部１３を備え、圧力センサ５は、チャンバ延設部１３に側方から取り付けられる。 As is clear from the above detailed description, according to the present embodiment, the chamber member 4 disposed in front of the bumper force 11 in the vehicle bumper 2 and having the chamber space 3 formed therein, In the vehicle collision detection device 1, which includes a pressure sensor 5 that detects a pressure in the chamber space 3 and is configured to detect a collision with the vehicle bumper based on a pressure detection result by the pressure sensor 5, a chamber member 4 is a chamber extending portion 13 that extends from the end region of the chamber main body 12 projecting to the side of the vehicle width direction end portion of the bumper force 11 to the vehicle rear side to form a part of the chamber space 3. The pressure sensor 5 is attached to the chamber extension 13 from the side.
この構成によれば、チャンバ本体１２の端部領域から車両後方側へ延設されたチャンバ延設部１３に圧力センサ５が取り付けられる構造であるため、圧力センサ５のチャンバ部材４への取り付けが容易である。また、多様な意匠デザインに対応でき、バンパリーンフォース１１の大きさの違い等の構造の違いにも対応できる、汎用性が高く、多くの車種に適用できる搭載性に優れた車両用衝突検知装置１とすることができる。また、圧力センサ５がバンパリーンフォース１１よりも側方（左側）にあることにより、通常のバンパリーンフォース１１前方からの衝突時に、直接圧力センサ５が衝撃を受ける可能性が減少する。 According to this configuration, since the pressure sensor 5 is attached to the chamber extension 13 extending from the end region of the chamber body 12 to the vehicle rear side, the pressure sensor 5 can be attached to the chamber member 4. Easy. In addition, it is compatible with various design designs, can handle differences in the structure such as the size of the bumper force 11, and is highly versatile, and it has excellent mountability that can be applied to many types of vehicles. 1 can be used. Further, since the pressure sensor 5 is located on the side (left side) of the bumper force 11, the possibility that the pressure sensor 5 is directly impacted at the time of a collision from the front of the normal bumper force 11 is reduced.
＜第２の実施形態＞
第２の実施形態は、第１の実施形態とは、チャンバ部材４の形状が異なる。図４（ａ）、（ｂ）に示すように、チャンバ部材４は圧力センサ５の前方を覆うように車両の左側方向に延長されている。この構成によれば、チャンバの延設部１３と本体部１２の一部をなす延長部分とで、圧力センサ５を保護することになり、車両の左側前方の角部付近で衝突が起こった場合でも、圧力センサ５の前方にチャンバ部材４が配置されているため、圧力センサ５は保護され、直接荷重が付加されにくく、壊れにくい構造となる。
<Second Embodiment>
The second embodiment is different from the first embodiment in the shape of the chamber member 4. As shown in FIGS. 4A and 4B, the chamber member 4 extends in the left direction of the vehicle so as to cover the front of the pressure sensor 5. According to this configuration, the pressure sensor 5 is protected by the extension portion 13 of the chamber and the extension portion forming a part of the main body portion 12, and when a collision occurs in the vicinity of the left front corner of the vehicle. However, since the chamber member 4 is disposed in front of the pressure sensor 5, the pressure sensor 5 is protected, and a structure in which a direct load is hardly applied and is not easily broken is obtained.
＜第３の実施形態＞
第３の実施形態は、第１の実施形態とは、チャンバ部材４の形状が異なるほか、圧力センサ５の取り付け方向が異なる。第３の実施形態は、図５（ａ）、（ｂ）に示すように、第２の実施形態と同様に、チャンバ部材４は圧力センサ５の前方を覆うように車両の左側方向に延長されている。また、圧力センサ５は上方からチャンバ部材の延設部に取り付けられる。圧力センサ５の外形のうち、少ない寸法となる検知方向（図５（ｂ）で上下方向）を上下方向とでき、圧力センサ５近傍の上部に必要とするスペースを最小にする。この構成によれば、圧力センサ５及び延設部１３の占有する空間の高さ方向を最小限に抑えることができ、他の機器の配置を妨げない。この場合も、圧力センサ５は車両後方側にコネクタ部１５を有し、歩行者保護装置ＥＣＵ６等へ電気的に接続するための相手側コネクタ（不図示）を車両後方側から挿入、固定する配置とすることにより、衝突時に外れにくく、電気的な接続が断たれにくくしている。
<Third Embodiment>
The third embodiment differs from the first embodiment in the shape of the chamber member 4 and the mounting direction of the pressure sensor 5. As shown in FIGS. 5A and 5B, in the third embodiment, the chamber member 4 is extended in the left direction of the vehicle so as to cover the front of the pressure sensor 5, as in the second embodiment. ing. Further, the pressure sensor 5 is attached to the extended portion of the chamber member from above. Of the outer shape of the pressure sensor 5, the detection direction (vertical direction in FIG. 5B) having a small dimension can be set to the vertical direction, and the necessary space in the upper part in the vicinity of the pressure sensor 5 is minimized. According to this configuration, the height direction of the space occupied by the pressure sensor 5 and the extending portion 13 can be minimized, and the arrangement of other devices is not hindered. Also in this case, the pressure sensor 5 has a connector portion 15 on the vehicle rear side, and is arranged to insert and fix a mating connector (not shown) for electrical connection to the pedestrian protection device ECU 6 or the like from the vehicle rear side. By doing so, it is hard to come off at the time of a collision, and the electrical connection is made difficult to be cut off.
なお、本発明は上述した実施の形態に限定されるものではなく、本発明の主旨を逸脱しない範囲で種々の変更を施すことが可能であることはいうまでもない。 Note that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.
たとえば、各実施形態では圧力センサ５をチャンバ部材４の車幅方向左側端部に設けるものとしたが、チャンバ部材４の車幅方向右側端部に設けるものとしてもよいのは、もちろんである。 For example, in each embodiment, the pressure sensor 5 is provided at the left end of the chamber member 4 in the vehicle width direction, but it is needless to say that the pressure sensor 5 may be provided at the right end of the chamber member 4 in the vehicle width direction.
また、前記第１の実施形態では、圧力センサ５がチャンバ延設部１３に側方から取り付けられる構成としたが、前記第３の実施形態と同様に、チャンバ延設部１３に上方から取り付けられる構成としてもよい。 In the first embodiment, the pressure sensor 5 is attached to the chamber extension portion 13 from the side. However, as in the third embodiment, the pressure sensor 5 is attached to the chamber extension portion 13 from above. It is good also as a structure.
また、前記第２、第３の実施形態では、チャンバ延設部１３に取り付けられた圧力センサ５の車両前方側を覆うように、それぞれチャンバ本体１２が側方（左側）又は上方に延長形成される構成としたが、要するに圧力センサ５の取り付け位置に合わせて、その車両前方側を覆うようにチャンバ本体１２を延長形成すればよいのである。 In the second and third embodiments, the chamber body 12 is formed to extend sideways (left side) or upward so as to cover the vehicle front side of the pressure sensor 5 attached to the chamber extension 13. In short, the chamber body 12 may be extended so as to cover the front side of the vehicle in accordance with the mounting position of the pressure sensor 5.
また、圧力センサ５は、チャンバ部材４に１つ設けられるものとしたが、冗長性を向上させるため、チャンバ延設部１３がチャンバ部材４の車幅方向における両側の端部領域からそれぞれ延設され、圧力センサ５が各チャンバ延設部１３，１３にそれぞれ取りつけられる構成としてもよい。この場合、各実施形態に示したチャンバ部材４の車幅方向左側端部に設けるものに加えて、チャンバ部材４の車幅方向右側端部に設けて、対称的な配置とすることがスペース効率の点から有利である。さらに、圧力センサ５を３つ以上設けてもよいのはもちろんである。 In addition, one pressure sensor 5 is provided in the chamber member 4, but in order to improve redundancy, the chamber extension portion 13 extends from both end regions of the chamber member 4 in the vehicle width direction. The pressure sensor 5 may be attached to each of the chamber extending portions 13 and 13. In this case, in addition to what is provided at the left end of the chamber member 4 in the vehicle width direction of the chamber member 4 shown in each embodiment, the space efficiency is provided by providing it at the right end of the chamber member 4 in the vehicle width direction. This is advantageous. Of course, three or more pressure sensors 5 may be provided.
１ 車両用衝突検知装置
２ バンパ
３ チャンバ空間
４ チャンバ部材
５ 圧力センサ
６ 歩行者保護装置ＥＣＵ
７ 車速センサ
８ 歩行者保護装置
９ バンパカバー
１０ バンパアブソーバ
１１ バンパリーンフォース
１２ 本体部（チャンバ本体）
１３ 延設部（チャンバ延設部）
１４ サイドメンバ
１５ コネクタ部（圧力センサ）
DESCRIPTION OF SYMBOLS 1 Vehicle collision detection apparatus 2 Bumper 3 Chamber space 4 Chamber member 5 Pressure sensor 6 Pedestrian protection apparatus ECU
7 Vehicle speed sensor 8 Pedestrian protection device 9 Bumper cover 10 Bumper absorber 11 Bumper force 12 Body (chamber body)
13 Extension (chamber extension)
14 Side member 15 Connector (pressure sensor)
Claims (6)
前記チャンバ部材は、前記バンパリーンフォースの車幅方向端部よりも車両側方に突出する前記チャンバ本体の端部領域から車両後方側へ延設されて前記チャンバ空間の一部を形成するチャンバ延設部を備え、
前記圧力センサは、前記チャンバ延設部に取り付けられることを特徴とする車両用衝突検知装置。 A chamber member having a chamber body disposed in front of a bumper force in a vehicle bumper and having a chamber space formed therein, and a pressure sensor for detecting a pressure in the chamber space, the pressure by the pressure sensor In the vehicle collision detection device configured to detect a collision with the vehicle bumper based on a detection result,
The chamber member extends from the end region of the chamber main body protruding toward the vehicle side with respect to the vehicle width direction end portion of the bumper force to the vehicle rear side to form a part of the chamber space. Equipped with
The vehicle collision detection device, wherein the pressure sensor is attached to the chamber extension portion.
前記圧力センサは、前記各チャンバ延設部にそれぞれ取りつけられることを特徴とする請求項１乃至５のいずれか一項に記載の車両用衝突検知装置。 The chamber extending portions are respectively extended from end regions on both sides in the vehicle width direction of the chamber member,
6. The vehicle collision detection device according to claim 1, wherein the pressure sensor is attached to each of the chamber extending portions.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011158215A JP5392315B2 (en) | 2011-07-19 | 2011-07-19 | Vehicle collision detection device |
| DE201210105662 DE102012105662A1 (en) | 2011-07-19 | 2012-06-28 | Collision detection device for car, has chamber body portion whose end portion projects from one end of bumper reinforcement part with respect to vehicle width direction of side of vehicle, and pressure sensor secured to chamber portion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011158215A JP5392315B2 (en) | 2011-07-19 | 2011-07-19 | Vehicle collision detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2013023027A true JP2013023027A (en) | 2013-02-04 |
| JP5392315B2 JP5392315B2 (en) | 2014-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2011158215A Expired - Fee Related JP5392315B2 (en) | 2011-07-19 | 2011-07-19 | Vehicle collision detection device |
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| DE (1) | DE102012105662A1 (en) |
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| WO2015186314A1 (en) * | 2014-06-04 | 2015-12-10 | 株式会社デンソー | Collision detection system for vehicle |
| JP2016011102A (en) * | 2014-06-04 | 2016-01-21 | 株式会社デンソー | Collision detection device for vehicle |
| CN106043187A (en) * | 2015-04-02 | 2016-10-26 | 通用汽车环球科技运作有限责任公司 | Front section for motor vehicle |
| CN113474222A (en) * | 2019-02-25 | 2021-10-01 | 标致雪铁龙汽车股份有限公司 | Bumper structure subassembly including a cushioning element associated with an impact sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5392315B2 (en) | 2014-01-22 |
| DE102012105662A1 (en) | 2013-01-24 |
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