JP2021138181A - Collision detection device - Google Patents

Collision detection device Download PDF

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JP2021138181A
JP2021138181A JP2020035206A JP2020035206A JP2021138181A JP 2021138181 A JP2021138181 A JP 2021138181A JP 2020035206 A JP2020035206 A JP 2020035206A JP 2020035206 A JP2020035206 A JP 2020035206A JP 2021138181 A JP2021138181 A JP 2021138181A
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collision
collision detection
detection unit
detection device
pedestrian
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JP7431060B2 (en
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亘 柳澤
Wataru Yanagisawa
亘 柳澤
優汰 岸
Yuta Kishi
優汰 岸
一生 首藤
Kazuo Shudo
一生 首藤
啓介 石上
Keisuke Ishigami
啓介 石上
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Subaru Corp
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Subaru Corp
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Abstract

To provide a collision detection device which can detect a collision clearly discriminating between a pedestrian collision and a light collision.SOLUTION: A collision detection device 11 includes: an impact absorption part 17 which extends along a width direction of a vehicle 10 between a bumper face 14 and a bumper beam 13 of the vehicle 10 and deforms to absorb an impact when the vehicle 10 collides; and a collision detection part 15 which extends along the width direction of the vehicle 10 and deforms to detect occurrence of a collision when the vehicle 10 collides. At least a lower portion of the collision detection part 15 is integrated with the impact absorption part 17.SELECTED DRAWING: Figure 2

Description

この発明は、衝突検知装置に係り、特に、車両のバンパビームの前側に配置される衝突検知装置に関する。 The present invention relates to a collision detection device, and more particularly to a collision detection device arranged on the front side of a bumper beam of a vehicle.

近年、車両の前部に衝突体が衝突した際に、当該衝突を検出する衝突検知装置が出現している。このような衝突検知装置は、車両のバンパビームの前側に衝撃吸収部と衝撃検出部が配置されており、衝撃吸収部で衝突の衝撃を吸収し、衝撃検出部で衝突の衝撃を検出する。衝撃検出部で検出される衝撃に基づいて、車両の前部に設けられたエアバッグを膨張展開する。これにより、エアバッグが衝突体を保護する。 In recent years, when a collision body collides with the front part of a vehicle, a collision detection device that detects the collision has appeared. In such a collision detection device, a shock absorbing unit and an impact detecting unit are arranged on the front side of the bumper beam of the vehicle, the impact absorbing unit absorbs the impact of the collision, and the impact detecting unit detects the impact of the collision. Based on the impact detected by the impact detection unit, the airbag provided at the front of the vehicle is expanded and deployed. This allows the airbag to protect the colliding body.

このような衝撃検出部は、保護対象以外の小動物などの場合でもエアバッグが展開してしまい、運転者の視界が妨げられるなどの問題があった。このため、衝突時に於いて衝突した物体を区別して検出することが求められている。 Such an impact detection unit has a problem that the airbag expands even in the case of a small animal or the like other than the protection target, and the driver's field of vision is obstructed. Therefore, it is required to distinguish and detect the collided object at the time of collision.

当該区別検出する技術として、例えば、特許文献1には、誤った衝突判定が行われることを防止する車両用衝突検知装置が提案されている。この車両用衝突検知装置は、内部の空間に圧力センサが配置されたチャンバ部材を有し、このチャンバ部材の車両前方側の面を法線が斜め上方を向く傾斜面にしている。これにより、軽衝突ではチャンバ部材への外力が大幅に軽減されるため、人が衝突した場合の衝撃と軽い衝突体が衝突した場合の衝撃とをそれぞれ区別して検出することができる。 As a technique for detecting the distinction, for example, Patent Document 1 proposes a collision detection device for a vehicle that prevents an erroneous collision determination from being performed. This vehicle collision detection device has a chamber member in which a pressure sensor is arranged in an internal space, and the surface of the chamber member on the front side of the vehicle is an inclined surface whose normal line faces diagonally upward. As a result, in a light collision, the external force on the chamber member is significantly reduced, so that the impact when a person collides and the impact when a light colliding body collides can be detected separately.

また、特許文献2では、車両と歩行者との衝突を精度良く検知することができる歩行者衝突検知装置が記載されている。具体的には、特許文献2では、衝突を検知する圧力チャンバの上面および下面に肉厚部を形成することで、圧力チャンバの変形量を制御し、圧力チャンバの変形を用いた衝突検知の精度を向上することができる。 Further, Patent Document 2 describes a pedestrian collision detection device capable of accurately detecting a collision between a vehicle and a pedestrian. Specifically, in Patent Document 2, the amount of deformation of the pressure chamber is controlled by forming thick portions on the upper surface and the lower surface of the pressure chamber for detecting a collision, and the accuracy of collision detection using the deformation of the pressure chamber is controlled. Can be improved.

特開2009−214845号公報JP-A-2009-214845 特開2011−246075号公報Japanese Unexamined Patent Publication No. 2011-246075

しかしながら、上記した衝突検知装置では、衝突の検知精度を向上させる観点から改善の余地があった。 However, in the above-mentioned collision detection device, there is room for improvement from the viewpoint of improving the collision detection accuracy.

具体的には、車両前部に対して発生する衝突は、車両前部に歩行者が衝突する歩行者衝突と、歩行者以外の物体、例えば小動物等が車両前部に衝突する軽衝突と、を含む。歩行者衝突が発生した場合と軽衝突が発生した場合とでは、衝突検知部に衝撃が加わる方向が異なるが、上記した各特許文献に記載された衝突検知装置では、両者を明確に区別して検知することは簡単ではなかった。 Specifically, the collisions that occur at the front of the vehicle include a pedestrian collision in which a pedestrian collides with the front of the vehicle, and a light collision in which an object other than the pedestrian, such as a small animal, collides with the front of the vehicle. including. The direction in which the impact is applied to the collision detection unit differs depending on whether a pedestrian collision occurs or a light collision occurs, but the collision detection device described in each of the above-mentioned patent documents clearly distinguishes between the two. It wasn't easy to do.

また、歩行者衝突と軽衝突とを区別して検知するために、バンパフェイスと衝突検知部との間に、歩行者衝突と軽衝突とで変形特性が異なるスペーサを配設することも考えられる。しかしながら、歩行者衝突が発生した際に、スペーサの潰れ残りが発生することで、歩行者を衝撃から充分に保護することが難しい課題が発生する。 Further, in order to distinguish between a pedestrian collision and a light collision, it is conceivable to dispose a spacer between the bumper face and the collision detection unit, which has different deformation characteristics between the pedestrian collision and the light collision. However, when a pedestrian collision occurs, the spacer remains crushed, which causes a problem that it is difficult to sufficiently protect the pedestrian from the impact.

本発明は、このような問題点を鑑みてなされたものであり、本発明の目的は、歩行者衝突と軽衝突とを明確に区別して検知することができる衝突検知装置を提供することにある。 The present invention has been made in view of such problems, and an object of the present invention is to provide a collision detection device capable of clearly distinguishing between a pedestrian collision and a light collision. ..

本発明の請求項1に係る発明は、車両のバンパフェイスとバンパビームとの間で車両幅方向に沿って伸び、前記車両が衝突した際に変形することで衝撃を吸収する衝撃吸収部と、前記車両幅方向に沿って伸び、前記車両が衝突した際に変形することで、前記衝突が発生したことを検知する衝突検知部と、を具備し、前記衝突検知部の少なくとも下部分は、前記衝撃吸収部と一体化していることを特徴とする。 The invention according to claim 1 of the present invention includes a shock absorbing portion that extends between the bumper face and the bumper beam of the vehicle along the vehicle width direction and absorbs the impact by being deformed when the vehicle collides. A collision detection unit that extends along the vehicle width direction and deforms when the vehicle collides to detect the occurrence of the collision is provided, and at least the lower portion of the collision detection unit is the impact. It is characterized by being integrated with the absorption unit.

本発明の請求項2に係る発明は、前記衝突検知部の前記下部分は前記衝撃吸収部と同一材料であり、前記衝突検知部の上部分は前記衝撃吸収部よりも軟性に優れる材料から成ることを特徴とする。 In the invention according to claim 2 of the present invention, the lower part of the collision detection part is made of the same material as the shock absorbing part, and the upper part of the collision detecting part is made of a material having better softness than the shock absorbing part. It is characterized by that.

本発明の請求項3に係る発明は、前記衝撃吸収部は、合成樹脂板から成ることを特徴とする。 The invention according to claim 3 of the present invention is characterized in that the shock absorbing portion is made of a synthetic resin plate.

本発明の請求項4に係る発明は、前記衝突検知部は、前記衝撃吸収部の前面と前記バンパフェイスとの間に配置されることを特徴とする。 The invention according to claim 4 of the present invention is characterized in that the collision detection unit is arranged between the front surface of the shock absorbing unit and the bumper face.

本発明の請求項5に係る発明は、前記衝突検知部は、下面部と、前面部と、上面部と、を有し、前記下面部は、前記衝撃吸収部と同質の硬質材料から成り、前記前面部および前記上面部は、前記下面部よりも軟質な材料から成ることを特徴とする。 In the invention according to claim 5 of the present invention, the collision detection unit has a lower surface portion, a front surface portion, and an upper surface portion, and the lower surface portion is made of a hard material having the same quality as the shock absorbing portion. The front surface portion and the upper surface portion are made of a material softer than the lower surface portion.

本発明の請求項6に係る発明は、前記衝突検知部は、チューブ型であることを特徴とする。 The invention according to claim 6 of the present invention is characterized in that the collision detection unit is of a tube type.

本発明の請求項7に係る発明は、前記衝突検知部は、前記衝撃吸収部の前面に形成されることを特徴とする。 The invention according to claim 7 of the present invention is characterized in that the collision detection unit is formed on the front surface of the shock absorbing unit.

本発明の請求項8に係る発明は、前記衝突検知部は、前記衝撃吸収部の上端に形成されることを特徴とする。 The invention according to claim 8 of the present invention is characterized in that the collision detection unit is formed at the upper end of the shock absorbing unit.

本発明の請求項1に係る発明によれば、衝突検知部の少なくとも下部分を、衝撃吸収部と一体成型することで、硬い材料から成る衝撃吸収部により、衝突検知部の少なくとも下方部分の剛性を確保できる。よって、軽衝突の際に衝突検知部の変形量を小さくし、軽衝突と歩行者衝突とを区別して検出することができる。また、衝突検知部を単体の部品として用意する必要が無いので、衝突検知装置の部品点数を削減することが出来る。更に、背景技術に係るスペーサを不要にすることで、部品点数を更に削減することができる。 According to the first aspect of the present invention, at least the lower part of the collision detection part is integrally molded with the shock absorbing part, so that the shock absorbing part made of a hard material provides rigidity of at least the lower part of the collision detecting part. Can be secured. Therefore, in the case of a light collision, the amount of deformation of the collision detection unit can be reduced, and the light collision and the pedestrian collision can be detected separately. Further, since it is not necessary to prepare the collision detection unit as a single component, the number of components of the collision detection device can be reduced. Further, the number of parts can be further reduced by eliminating the need for spacers related to the background technology.

本発明の請求項2に係る発明によれば、衝突検知部の下部分の前後方向に於ける応力を高め、軽衝突時に於ける衝突検知部の変形量を更に小さくできる。 According to the second aspect of the present invention, the stress in the front-rear direction of the lower portion of the collision detection unit can be increased, and the amount of deformation of the collision detection unit at the time of a light collision can be further reduced.

本発明の請求項3に係る発明によれば、衝突検知部の下部分を合成樹脂板と同一材料で構成することで、衝突検知部の下部分の前後方向に於ける応力を更に高め、軽衝突時に於ける衝突検知部の変形量を更に小さくできる。 According to the third aspect of the present invention, by forming the lower portion of the collision detection portion with the same material as the synthetic resin plate, the stress in the front-rear direction of the lower portion of the collision detection portion is further increased and is light. The amount of deformation of the collision detection unit at the time of collision can be further reduced.

本発明の請求項4に係る発明によれば、バンパフェイスと衝撃吸収部との間で衝突検知部が良好に変形することで、歩行者衝突および軽衝突を良好に区別して検知できる。 According to the fourth aspect of the present invention, the collision detection unit is satisfactorily deformed between the bumper face and the shock absorbing unit, so that a pedestrian collision and a light collision can be satisfactorily detected.

本発明の請求項5に係る発明によれば、本願発明の衝突検知部の下側面は硬質部から成ることで、軽衝突が発生した際における衝突検知部の変形量を小さくする一方、衝突検知部の前側面および上側面が軟質部から成ることで、歩行者衝突が発生した際の衝突検知部の変形量を大きくしている。 According to the invention according to claim 5 of the present invention, the lower surface of the collision detection unit of the present invention is composed of a hard portion, so that the amount of deformation of the collision detection unit when a light collision occurs is reduced, while collision detection is performed. Since the front side surface and the upper side surface of the part are made of soft parts, the amount of deformation of the collision detection part when a pedestrian collision occurs is increased.

本発明の請求項6に係る発明によれば、チューブ部の衝突検知部により正確に衝突を検知できる。 According to the invention according to claim 6 of the present invention, the collision can be accurately detected by the collision detection unit of the tube portion.

本発明の請求項7に係る発明によれば、衝突検知部が衝撃吸収部の前面に形成されることで、衝突検知部により歩行者衝突と軽衝突とを明確に区別して検知できる。 According to the invention according to claim 7, the collision detection unit is formed on the front surface of the shock absorbing unit, so that the collision detection unit can clearly distinguish between a pedestrian collision and a light collision.

本発明の請求項8に係る発明によれば、衝突検知部が衝撃吸収部の上端に形成されることで、歩行者衝突と軽衝突とを更に明確に区別して検知できる。 According to the invention according to claim 8 of the present invention, the collision detection unit is formed at the upper end of the shock absorbing unit, so that the pedestrian collision and the light collision can be detected more clearly.

本発明の実施の形態に係る衝突検知装置を備えた車両を示す図であり、(A)は車両前部を示す斜視図であり、(B)は衝突検知装置等を示す分解斜視図である。It is a figure which shows the vehicle provided with the collision detection device which concerns on embodiment of this invention, (A) is the perspective view which shows the front part of a vehicle, (B) is the exploded perspective view which shows the collision detection device and the like. .. 本発明の実施の形態に係る衝突検知装置を示す図であり、(A)は衝突検知装置を示す側方断面図であり、(B)は衝突検知部が形成される部分を拡大して示す側方断面図である。It is a figure which shows the collision detection apparatus which concerns on embodiment of this invention, (A) is the side sectional view which shows the collision detection apparatus, (B) shows the part where the collision detection part is formed enlarged. It is a side sectional view. 本発明の実施の形態に係る衝突検知装置の接続構成を示すブロック図である。It is a block diagram which shows the connection structure of the collision detection apparatus which concerns on embodiment of this invention. 本発明の実施の形態に係る衝突検知装置を示す図であり、(A)は歩行者衝突が発生した際の衝突検知装置の挙動を示す側方断面図であり、(B)は衝突検知部の変形状況を詳細に示す側方断面図である。It is a figure which shows the collision detection device which concerns on embodiment of this invention, (A) is a side sectional view which shows the behavior of the collision detection device when a pedestrian collision occurs, (B) is a collision detection part. It is a side sectional view which shows the deformation state of. 本発明の実施の形態に係る衝突検知装置を示す図であり、(A)は軽衝突が発生した際の衝突検知装置の挙動を示す側方断面図であり、(B)は衝突検知部の変形状況を詳細に示す側方断面図である。It is a figure which shows the collision detection apparatus which concerns on embodiment of this invention, (A) is a side sectional view which shows the behavior of the collision detection apparatus when a light collision occurs, (B) is the collision detection part. It is a side sectional view which shows the deformation state in detail.

以下、本発明の実施形態に係る衝突検知装置11を図面に基づき詳細に説明する。以下の説明に於いては前後上下左右の各方向を用いるが、左右とは車両10を前方から見た場合の左右である。また、以下の説明では、車両10の前部に歩行者が衝突する現象を歩行者衝突と称し、車両10の前部に歩行者以外の小動物等が衝突する現象を軽衝突と称する。 Hereinafter, the collision detection device 11 according to the embodiment of the present invention will be described in detail with reference to the drawings. In the following description, each direction of front / rear, up / down, left / right is used, and the left / right means the left / right when the vehicle 10 is viewed from the front. Further, in the following description, a phenomenon in which a pedestrian collides with the front part of the vehicle 10 is referred to as a pedestrian collision, and a phenomenon in which a small animal other than a pedestrian collides with the front part of the vehicle 10 is referred to as a light collision.

図1(A)は車両前部を示す斜視図であり、図1(B)は衝突検知装置等を示す分解斜視図である。 FIG. 1A is a perspective view showing the front part of the vehicle, and FIG. 1B is an exploded perspective view showing a collision detection device and the like.

図1(A)を参照して、車両10の前部の意匠部分は、上方から、フロントフード12、グリル16およびバンパフェイス14から構成されている。本形態の衝突検知装置11を構成する部材は、グリル16またはバンパフェイス14の後方に設けられている。車両10が歩行者に衝突したことを衝突検知装置11が検出すると、後述するECU20が、フロントフード12の近傍に配置されたエアバッグ22(不図示)が膨張展開し、歩行者を二次衝突から保護する。また、ポップアップフード23(不図示)が動作し、フロントフード12の後方部分が上方に持ち上げられ、歩行者の頭部に与える衝撃を軽減する。ここで、エアバッグ22とポップアップフード23は両者が採用されても良いし、何れか一方が採用されても良い。 With reference to FIG. 1A, the front design portion of the vehicle 10 is composed of a front hood 12, a grill 16 and a bumper face 14 from above. The members constituting the collision detection device 11 of this embodiment are provided behind the grill 16 or the bumper face 14. When the collision detection device 11 detects that the vehicle 10 has collided with a pedestrian, the ECU 20 described later expands and expands the airbag 22 (not shown) arranged in the vicinity of the front hood 12, and causes a secondary collision with the pedestrian. Protect from. Further, the pop-up hood 23 (not shown) operates, and the rear portion of the front hood 12 is lifted upward to reduce the impact on the pedestrian's head. Here, both the airbag 22 and the pop-up hood 23 may be adopted, or either one may be adopted.

図1(B)を参照して、衝突検知装置11は、車両10のバンパフェイス14とバンパビーム13との間で車両10の幅方向に沿って伸びて車両10が衝突した際に変形することで衝撃を吸収する衝撃吸収部17と、車両10の幅方向に沿って伸びて車両10が衝突した際に変形することで、衝突が発生したことを検知する衝突検知部15と、を具備する。また、衝突検知装置11では、衝突検知部15の少なくとも下部分は、衝撃吸収部17と一体化している。換言すると、衝突検知装置11では、一般的な検知装置が備えるチューブ状またはチャンバ状の検知装置部を個別に有しておらず、衝突検知部15の少なくとも一部は衝撃吸収部17から形成されている。 With reference to FIG. 1B, the collision detection device 11 extends along the width direction of the vehicle 10 between the bumper face 14 and the bumper beam 13 of the vehicle 10 and is deformed when the vehicle 10 collides. It includes a shock absorbing unit 17 that absorbs an impact, and a collision detecting unit 15 that extends along the width direction of the vehicle 10 and deforms when the vehicle 10 collides to detect the occurrence of a collision. Further, in the collision detection device 11, at least the lower portion of the collision detection unit 15 is integrated with the shock absorbing unit 17. In other words, the collision detection device 11 does not individually have the tube-shaped or chamber-shaped detection device unit provided in the general detection device, and at least a part of the collision detection unit 15 is formed from the shock absorbing unit 17. ing.

衝撃吸収部17は、PP(ポリプロピレン)等から成る高剛性な板状の合成樹脂板から構成される。衝撃吸収部17は図2(A)を参照して後述する。 The shock absorbing portion 17 is made of a highly rigid plate-shaped synthetic resin plate made of PP (polypropylene) or the like. The shock absorbing unit 17 will be described later with reference to FIG. 2 (A).

衝突検知部15は、衝撃吸収部17の前面上端部側に配設されており、衝撃吸収部17の前面と一体化している。後述するように、衝突検知部15の下部は、衝撃吸収部17と同一材料から成る。衝突検知部15は、歩行者衝突および軽衝突が発生した際に潰れるように変形し、後述する検出装置18が、衝突検知部15の変形量をセンシングすることで歩行者衝突または軽衝突を検知している。具体的には、衝突検知部15の内部の圧力変化、衝突検知部15から外部に放出される空気の流速や流量等の変化を、後述する検出装置18が検出することで、衝突検知部15の変形量をセンシングする。ここで、検出装置18としては、例えば、衝突検知部15の両端側に配置された圧力センサを採用できる。 The collision detection unit 15 is arranged on the upper end side of the front surface of the shock absorbing unit 17, and is integrated with the front surface of the impact absorbing unit 17. As will be described later, the lower portion of the collision detection unit 15 is made of the same material as the shock absorbing unit 17. The collision detection unit 15 is deformed so as to be crushed when a pedestrian collision or a light collision occurs, and the detection device 18 described later detects a pedestrian collision or a light collision by sensing the amount of deformation of the collision detection unit 15. doing. Specifically, the collision detection unit 15 detects changes in the pressure inside the collision detection unit 15, changes in the flow velocity, flow rate, and the like of the air discharged from the collision detection unit 15 to the outside by the detection device 18 described later. The amount of deformation of is sensed. Here, as the detection device 18, for example, pressure sensors arranged on both ends of the collision detection unit 15 can be adopted.

バンパビーム13は車両の幅方向に伸び、金属板から成る略矩形断面を有する筒状の部材であり、衝撃吸収部17等を支持し、且つ、大衝突時のエネルギを吸収する役割を有する。歩行者衝突や軽衝突の際には、バンパビーム13は原則として変形せず、衝突検知装置11を後方から支持する。 The bumper beam 13 is a cylindrical member that extends in the width direction of the vehicle and has a substantially rectangular cross section made of a metal plate, supports a shock absorbing portion 17 and the like, and has a role of absorbing energy at the time of a large collision. In the event of a pedestrian collision or a light collision, the bumper beam 13 does not deform in principle and supports the collision detection device 11 from behind.

図2(A)は衝突検知装置11を示す側方断面図であり、図2(B)は衝突検知部15が形成される部分を拡大して示す側方断面図である。 FIG. 2A is a side sectional view showing the collision detection device 11, and FIG. 2B is an enlarged side sectional view showing a portion where the collision detection unit 15 is formed.

図2(A)を参照して、衝突検知部15は、衝撃吸収部17の前面上端部近傍に形成されている。また、衝突検知部15は、バンパフェイス14と衝撃吸収部17の前端との間に配設されている。更に、衝突検知部15は、衝撃吸収部17の前面であって上端またはその近傍に形成されている。 With reference to FIG. 2A, the collision detection unit 15 is formed in the vicinity of the front upper end portion of the shock absorbing unit 17. Further, the collision detection unit 15 is arranged between the bumper face 14 and the front end of the shock absorbing unit 17. Further, the collision detection unit 15 is formed on the front surface of the shock absorbing unit 17 at or near the upper end thereof.

衝撃吸収部17は、その断面が水平に伸びる水平部材171と、その断面が垂直に伸びる垂直部材172と、を有している。水平部材171は、衝撃吸収部17の最上部に配置されている。垂直部材172は、複数が水平部材171の下面から下方に向かって伸びている。 The shock absorbing portion 17 has a horizontal member 171 whose cross section extends horizontally, and a vertical member 172 whose cross section extends vertically. The horizontal member 171 is arranged at the uppermost portion of the shock absorbing portion 17. A plurality of vertical members 172 extend downward from the lower surface of the horizontal member 171.

図2(B)を参照して、衝突検知部15は、下面部151と、前面部152と、上面部153と、を有しており、閉断面を形成している。また、衝突検知部15の後面は、衝撃吸収部17の垂直部材172が形成している。ここで、衝突検知部15の下部分は衝撃吸収部17と同一材料であり、衝突検知部15の上部分は衝撃吸収部17よりも軟性に優れる材料から成る。 With reference to FIG. 2B, the collision detection unit 15 has a lower surface portion 151, a front surface portion 152, and an upper surface portion 153, and forms a closed cross section. Further, a vertical member 172 of the shock absorbing unit 17 is formed on the rear surface of the collision detecting unit 15. Here, the lower part of the collision detection unit 15 is made of the same material as the shock absorbing part 17, and the upper part of the collision detecting part 15 is made of a material having better softness than the shock absorbing part 17.

具体的には、下面部151および前面部152の下部分は、軟質部154よりも高剛性な硬質部155から形成されている。硬質部155は、衝撃吸収部17と同様のPP等から形成されており、軽衝突が発生した際に容易に変形しない。また、下面部151は、前方に向かって略垂直に伸びる板状部材であるため、前方からの入力に対する応力が大きく、係る入力により容易に変形しない形状を呈している。 Specifically, the lower portion 151 and the lower portion of the front surface 152 are formed of a hard portion 155 having a higher rigidity than the soft portion 154. The hard portion 155 is formed of PP or the like similar to the shock absorbing portion 17, and is not easily deformed when a light collision occurs. Further, since the lower surface portion 151 is a plate-shaped member extending substantially vertically toward the front, the stress on the input from the front is large, and the lower surface portion 151 has a shape that is not easily deformed by the input.

上面部153および前面部152の上部分は、低剛性な軟質部154から形成されている。軟質部154としては、軟らかいエラストマー材、例えばTPO(オレフィン系エラストマー)を採用することができる。TPOは、成形性に優れているため、軟質部154の材料として適している。更に、軟質部154として、ゴムなどの他の軟性材料を採用しても良い。軟質部154から成る前面部152および上面部153は、前方に向かって下方に伸びる略鉤形状であるため、後側下方に向かう入力に対する応力が小さく、係る入力により容易に変型できる形状を呈している。 The upper portion of the upper surface portion 153 and the upper surface portion 152 is formed of a low-rigidity soft portion 154. As the soft portion 154, a soft elastomer material, for example, TPO (olefin elastomer) can be adopted. Since TPO is excellent in moldability, it is suitable as a material for the soft portion 154. Further, another soft material such as rubber may be adopted as the soft portion 154. Since the front surface portion 152 and the upper surface portion 153 composed of the soft portion 154 have a substantially hook shape extending downward toward the front, the stress on the input toward the rear lower side is small, and the shape can be easily transformed by the input. There is.

硬質部155と軟質部154とは、例えば二色成形により成形される為、両者は強固に接合されており、歩行者衝突および軽衝突が発生した際に、両者の境界から空気が外部に漏出することはない。 Since the hard part 155 and the soft part 154 are molded by, for example, two-color molding, they are firmly joined to each other, and when a pedestrian collision or a light collision occurs, air leaks to the outside from the boundary between the two. There is nothing to do.

軟質部154と硬質部155の境界は、前面部152の略中央部に形成されているが、当該境界は他の場所に配置することもできる。例えば、軟質部154と硬質部155との境界を、前面部152の下端に配置しても良いし、下面部151の前後方向中間部に配置することもできる。 The boundary between the soft portion 154 and the hard portion 155 is formed at a substantially central portion of the front surface portion 152, but the boundary can be arranged at another location. For example, the boundary between the soft portion 154 and the hard portion 155 may be arranged at the lower end of the front surface portion 152, or may be arranged at the middle portion in the front-rear direction of the lower surface portion 151.

図3は、衝突検知装置11の接続構成を示すブロック図である。衝突検知装置11は、ECU20と、検出装置18と、速度センサ19と、エアバッグ22と、ポップアップフード23と、報知装置25と、を有している。 FIG. 3 is a block diagram showing a connection configuration of the collision detection device 11. The collision detection device 11 includes an ECU 20, a detection device 18, a speed sensor 19, an airbag 22, a pop-up hood 23, and a notification device 25.

ECU20は、CPU21と、RAM24とを有する演算制御部であり、出力側端子と入力側端子とを有する。ECU20の入力側端子には、検出装置18および速度センサ19が接続されている。ECU20の出力側端子には、エアバッグ22、ポップアップフード23および報知装置25が接続されている。ECU20は、検出装置18および速度センサ19等から入力される入力情報に基づいて、所定の演算処理を実行し、エアバッグ22、ポップアップフード23および報知装置25等の動作を制御するための出力信号を出力する。 The ECU 20 is an arithmetic control unit having a CPU 21 and a RAM 24, and has an output side terminal and an input side terminal. A detection device 18 and a speed sensor 19 are connected to the input side terminal of the ECU 20. An airbag 22, a pop-up hood 23, and a notification device 25 are connected to the output side terminal of the ECU 20. The ECU 20 executes a predetermined arithmetic process based on the input information input from the detection device 18, the speed sensor 19, and the like, and outputs an output signal for controlling the operation of the airbag 22, the pop-up hood 23, the notification device 25, and the like. Is output.

検出装置18は、上記したように、衝突検知部15の内部圧力等に応じた電気信号をECU20に入力する。ECU20は、検出装置18が検知する衝突検知部15の内部圧力変化が一定以上であれば歩行者衝突が発生したと判断する一方、当該圧力変化が一定未満であれば軽衝突と判断する。 As described above, the detection device 18 inputs an electric signal corresponding to the internal pressure of the collision detection unit 15 to the ECU 20. The ECU 20 determines that a pedestrian collision has occurred if the internal pressure change of the collision detection unit 15 detected by the detection device 18 is equal to or more than a certain level, while determines that a light collision occurs if the pressure change is less than a certain value.

速度センサ19は、タイヤの回転数等に基づいて、車両10の走行速度を示す電気信号をECU20に入力する。ECU20は、速度センサ19が検出した車両10の走行速度が一定以下で歩行者衝突が発生した場合に、歩行者を保護するべく、エアバッグ22の膨張展開およびポップアップフード23の起動を行う。 The speed sensor 19 inputs an electric signal indicating the traveling speed of the vehicle 10 to the ECU 20 based on the number of rotations of the tires and the like. When the traveling speed of the vehicle 10 detected by the speed sensor 19 is below a certain level and a pedestrian collision occurs, the ECU 20 expands and deploys the airbag 22 and activates the pop-up hood 23 in order to protect the pedestrian.

エアバッグ22およびポップアップフード23は、図1を参照して説明したとおりであり、歩行者衝突が発生した際に歩行者を保護するべく、ECU20の指示に基づいて、エアバッグ22は膨張展開し、ポップアップフード23は***するように変位する。 The airbag 22 and the pop-up hood 23 are as described with reference to FIG. 1, and the airbag 22 expands and expands based on the instruction of the ECU 20 in order to protect the pedestrian in the event of a pedestrian collision. , The pop-up hood 23 is displaced so as to be raised.

報知装置25は、特定の表示または発音を行うことで、歩行者衝突または軽衝突が発生した旨を、車両10に搭乗する乗員に報知する。 The notification device 25 notifies the occupants on the vehicle 10 that a pedestrian collision or a light collision has occurred by performing a specific display or sounding.

図4および図5を参照して、歩行者衝突および軽衝突が衝突した際の衝突検知装置11の挙動を説明する。図4は歩行者衝突が発生した際における衝突検知装置11の挙動を示し、図5は軽衝突が発生した際における衝突検知装置11の挙動を示す。 The behavior of the collision detection device 11 when a pedestrian collision and a light collision collide will be described with reference to FIGS. 4 and 5. FIG. 4 shows the behavior of the collision detection device 11 when a pedestrian collision occurs, and FIG. 5 shows the behavior of the collision detection device 11 when a light collision occurs.

図4を参照して、歩行者衝突が発生した際における衝突検知装置11の挙動を説明する。図4(A)は歩行者衝突が発生した際の衝突検知装置11の挙動を示す側方断面図であり、図4(B)は衝突検知部15の変形状況を詳細に示す側方断面図である。ここでは、図面の簡略化のために、図2(A)に示したバンパフェイス14およびグリル16は、図示していない。 The behavior of the collision detection device 11 when a pedestrian collision occurs will be described with reference to FIG. FIG. 4A is a side sectional view showing the behavior of the collision detection device 11 when a pedestrian collision occurs, and FIG. 4B is a side sectional view showing in detail the deformation state of the collision detection unit 15. Is. Here, for the sake of simplification of the drawings, the bumper face 14 and the grill 16 shown in FIG. 2 (A) are not shown.

図4(A)を参照して、車両10の前部に歩行者26が衝突する歩行者衝突が発生すると、図2(A)に示したバンパフェイス14およびグリル16が、後方に向かって変形する。更に、衝撃吸収部17および衝突検知部15が後方に向かって変形する。特に衝撃吸収部17が変形することで、衝撃エネルギが吸収され、歩行者の脚部等に加わる衝撃を緩和することができる。 With reference to FIG. 4 (A), when a pedestrian collision occurs in which the pedestrian 26 collides with the front portion of the vehicle 10, the bumper face 14 and the grill 16 shown in FIG. 2 (A) are deformed rearward. do. Further, the impact absorbing unit 17 and the collision detecting unit 15 are deformed rearward. In particular, when the impact absorbing portion 17 is deformed, the impact energy is absorbed, and the impact applied to the legs of a pedestrian or the like can be alleviated.

歩行者衝突が発生すると、衝突検知部15が大きく圧縮変形する。これにより、図3を参照して、ECU20は、検出装置18が検出した衝突検知部15の変形量、例えば圧力変化量または空気排出量等が一定値を超えたことに基づいて、歩行者衝突が発生したことを検知する。 When a pedestrian collision occurs, the collision detection unit 15 is greatly compressed and deformed. As a result, referring to FIG. 3, the ECU 20 collides with a pedestrian based on the amount of deformation of the collision detection unit 15 detected by the detection device 18, for example, the amount of pressure change or the amount of air discharged exceeding a certain value. Is detected.

これに応じて、ECU20は、図3に示すエアバッグ22を膨張展開し、更に、ポップアップフード23を稼働させる。これにより、歩行者26がエアバッグ22およびポップアップフード23により受け止められ、歩行者26を効果的に保護できる。また、ECU20は、報知装置25を用いて歩行者衝突が発生した旨を乗員に報知する。 In response to this, the ECU 20 expands and deploys the airbag 22 shown in FIG. 3, and further operates the pop-up hood 23. As a result, the pedestrian 26 is received by the airbag 22 and the pop-up hood 23, and the pedestrian 26 can be effectively protected. Further, the ECU 20 uses the notification device 25 to notify the occupant that a pedestrian collision has occurred.

図4(B)を参照して、歩行者衝突が発生した際には、衝突検知部15の圧縮変形量が大きくなる。歩行者衝突が発生した際には、歩行者26から衝突検知部15に与えられる衝撃は、矢印が示すように、下側後方を向いている。よって、軟質部154から成る前面部152および上面部153は、下側後方に向かって大きく圧縮変形する。一方、硬質部155からなる下面部151の変形量は小さい。よって、衝突検知部15の内部圧力は大きく高まる。このことから、大きな内部圧力の変化を検出装置18が検出することで、歩行者衝突を確実に検知できる。 With reference to FIG. 4B, when a pedestrian collision occurs, the amount of compression deformation of the collision detection unit 15 becomes large. When a pedestrian collision occurs, the impact given by the pedestrian 26 to the collision detection unit 15 is directed downward and rearward as indicated by the arrow. Therefore, the front surface portion 152 and the upper surface portion 153 composed of the soft portion 154 are greatly compressed and deformed toward the lower rear side. On the other hand, the amount of deformation of the lower surface portion 151 composed of the hard portion 155 is small. Therefore, the internal pressure of the collision detection unit 15 is greatly increased. From this, the detection device 18 can reliably detect a pedestrian collision by detecting a large change in internal pressure.

また、衝突検知部15は、歩行者衝突をセンシングする際には、弾性変形を起こすことで、歩行者衝突を良好に検知する。一方、衝突検知部15は、歩行者衝突が発生した直後は塑性変形しており、衝突検知部15からの反発力は無い。 Further, the collision detection unit 15 satisfactorily detects a pedestrian collision by causing elastic deformation when sensing a pedestrian collision. On the other hand, the collision detection unit 15 is plastically deformed immediately after the pedestrian collision occurs, and there is no repulsive force from the collision detection unit 15.

図5を参照して、軽衝突が発生した際における衝突検知装置11の挙動を説明する。図5(A)は軽衝突が発生した際の衝突検知装置11の挙動を示す側方断面図であり、図5(B)は衝突検知部15の変形状況を詳細に示す側方断面図である。 The behavior of the collision detection device 11 when a light collision occurs will be described with reference to FIG. FIG. 5 (A) is a side sectional view showing the behavior of the collision detection device 11 when a light collision occurs, and FIG. 5 (B) is a side sectional view showing in detail the deformation state of the collision detection unit 15. be.

図5(A)を参照して、車両10の前部に小動物27等が衝突する軽衝突が発生すると、図2(A)に示したバンパフェイス14およびグリル16が、後方に向かって変形する。更に、衝撃吸収部17および衝突検知部15が後方に向かって変形する。特に衝撃吸収部17が変形することで、衝撃エネルギが吸収され、小動物27に加わる衝撃を緩和することができる。 With reference to FIG. 5A, when a light collision occurs in which a small animal 27 or the like collides with the front part of the vehicle 10, the bumper face 14 and the grill 16 shown in FIG. 2A are deformed rearward. .. Further, the impact absorbing unit 17 and the collision detecting unit 15 are deformed rearward. In particular, when the impact absorbing portion 17 is deformed, the impact energy is absorbed and the impact applied to the small animal 27 can be alleviated.

図5(B)を参照して、小動物27は上記した歩行者26よりも重心位置が低いことから、軽衝突が発生した際の衝撃の入力方向は、矢印が示すように、前後方向に対して略平行となる。このように成ると、前後方向に伸びる板部材である硬質部155から成る下面部151が、大きな応力を発生させる。また、軽衝突では下方向に向かって作用する衝撃が少ないことから、軟質部154から成る前面部152および上面部153の変形量も少ない。このことから、衝突検知部15は、多少の潰れ変形は生じるが、その変形量は歩行者衝突が発生した際と比較すると遙かに小さい。よって、衝突検知部15の内部に於ける圧力変動等も小さい。 With reference to FIG. 5B, since the center of gravity of the small animal 27 is lower than that of the pedestrian 26 described above, the input direction of the impact when a light collision occurs is the front-back direction as shown by the arrow. Is almost parallel. In this way, the lower surface portion 151 made of the hard portion 155, which is a plate member extending in the front-rear direction, generates a large stress. Further, in a light collision, since the impact acting downward is small, the amount of deformation of the front surface portion 152 and the upper surface portion 153 composed of the soft portion 154 is also small. From this, the collision detection unit 15 is slightly crushed and deformed, but the amount of deformation is much smaller than that when a pedestrian collision occurs. Therefore, the pressure fluctuation and the like inside the collision detection unit 15 are also small.

衝突検知部15は、軽衝突をセンシングする際には、比較的に小さな弾性変形を起こすことで、軽衝突を良好に検知する。一方、衝突検知部15は、軽衝突が発生した直後は塑性変形しており、衝突検知部15からの反発力は無い。 When sensing a light collision, the collision detection unit 15 satisfactorily detects the light collision by causing a relatively small elastic deformation. On the other hand, the collision detection unit 15 is plastically deformed immediately after the light collision occurs, and there is no repulsive force from the collision detection unit 15.

軽衝突が発生した際には、ECU20が、検出装置18が検出した衝突検知部15の変形量、例えば圧力変化量または空気排出量等が一定値を超えないことに基づいて、軽衝突が発生したことを検知する。また、ECU20は、報知装置25を用いて軽衝突が発生した旨を乗員に報知する。 When a light collision occurs, the light collision occurs based on the fact that the deformation amount of the collision detection unit 15 detected by the detection device 18, such as the pressure change amount or the air discharge amount, does not exceed a certain value. Detect what you have done. Further, the ECU 20 uses the notification device 25 to notify the occupant that a light collision has occurred.

その後、ECU20は、エアバッグ22を膨張展開させず、ポップアップフード23を稼働させない。これにより、不用意にエアバッグ22およびポップアップフード23が作動することで、乗員の視界が妨げられることを防止できる。 After that, the ECU 20 does not expand and deploy the airbag 22 and does not operate the pop-up hood 23. As a result, it is possible to prevent the visibility of the occupant from being obstructed by the careless operation of the airbag 22 and the pop-up hood 23.

上記した本実施形態により奏される主要な効果を以下に説明する。 The main effects produced by the above-described embodiment will be described below.

衝突検知装置11によれば、衝突検知部15の少なくとも下部分を、衝撃吸収部17と一体成型することで、硬い材料から成る衝撃吸収部17により、衝突検知部15の少なくとも下方部分の剛性を確保できる。よって、軽衝突が発生した際に衝突検知部15の変形量を小さくし、軽衝突と歩行者衝突とを明瞭に区別して検出することができる。また、衝突検知部15を単体の別部品として別途に用意する必要が無いので、衝突検知装置11の部品点数を削減することが出来る。 According to the collision detection device 11, at least the lower portion of the collision detection unit 15 is integrally molded with the impact absorption unit 17, so that the impact absorption unit 17 made of a hard material reduces the rigidity of at least the lower portion of the collision detection unit 15. Can be secured. Therefore, when a light collision occurs, the amount of deformation of the collision detection unit 15 can be reduced, and the light collision and the pedestrian collision can be clearly distinguished and detected. Further, since it is not necessary to separately prepare the collision detection unit 15 as a separate component of a single unit, the number of components of the collision detection device 11 can be reduced.

更に、衝突検知部15の下部分を、合成樹脂板である衝撃吸収部17と同一材料で構成することで、衝突検知部15の下部分の前後方向に於ける応力を高め、軽衝突時に於ける衝突検知部15の変形量を更に小さくし、歩行者衝突と軽衝突とを区別して検知できる。 Further, by forming the lower part of the collision detection part 15 with the same material as the impact absorbing part 17 which is a synthetic resin plate, the stress in the front-rear direction of the lower part of the collision detection part 15 is increased, and in a light collision. The amount of deformation of the collision detection unit 15 can be further reduced to distinguish between a pedestrian collision and a light collision.

更に、衝突検知部15の下側面が、硬質部155から成ることで、軽衝突が発生した際における衝突検知部15の変形量を小さくする一方、衝突検知部15の前側面および上側面が軟質部154から成ることで、歩行者衝突が発生した際の衝突検知部15の変形量を大きくしている。これにより、歩行者衝突と軽衝突とを更に明確に区別して検知できる。 Further, since the lower side surface of the collision detection unit 15 is composed of the hard portion 155, the amount of deformation of the collision detection unit 15 when a light collision occurs is reduced, while the front side surface and the upper side surface of the collision detection unit 15 are soft. By forming the unit 154, the amount of deformation of the collision detection unit 15 when a pedestrian collision occurs is increased. As a result, pedestrian collisions and light collisions can be more clearly distinguished and detected.

更に、衝突検知部15の少なくとも下部分を、衝撃吸収部17と一体成型することで、硬い材料から成る衝撃吸収部17により、衝突検知部15の少なくとも下方部分の剛性を確保できる。よって、軽衝突の際に検知部収納部および衝突検知部15の変形量を小さくし、軽衝突と歩行者衝突とを区別して検出することができる。 Further, by integrally molding at least the lower part of the collision detection part 15 with the shock absorbing part 17, the rigidity of at least the lower part of the collision detecting part 15 can be ensured by the shock absorbing part 17 made of a hard material. Therefore, in the case of a light collision, the amount of deformation of the detection unit storage unit and the collision detection unit 15 can be reduced, and the light collision and the pedestrian collision can be detected separately.

更に、衝突検知部15の下側面が硬質部155から成ることで、軽衝突が発生した際における衝突検知部15の変形量を小さくし、衝突検知部15の前側面および上側面が軟質部154から成ることで、歩行者衝突が発生した際の衝突検知部15の変形量を大きくしている。 Further, since the lower side surface of the collision detection unit 15 is composed of the hard portion 155, the amount of deformation of the collision detection unit 15 when a light collision occurs is reduced, and the front side surface and the upper side surface of the collision detection unit 15 are soft portions 154. The amount of deformation of the collision detection unit 15 when a pedestrian collision occurs is increased.

更に、本発明の衝突検知部15が衝撃吸収部17の前面173に形成されることで、歩行者衝突および軽衝突が発生した際の衝撃が、直接的に衝突検知部15に作用するので、衝突検知部15により歩行者衝突と軽衝突とを明確に区別して検知できる。 Further, since the collision detection unit 15 of the present invention is formed on the front surface 173 of the impact absorption unit 17, the impact when a pedestrian collision or a light collision occurs directly acts on the collision detection unit 15. The collision detection unit 15 can clearly distinguish between a pedestrian collision and a light collision.

更に、本発明の衝突検知部15が衝撃吸収部17の上端に形成されることで、衝突検知部15により歩行者衝突と軽衝突とを、更に明確に区別して検知できる。 Further, since the collision detection unit 15 of the present invention is formed at the upper end of the shock absorbing unit 17, the collision detection unit 15 can detect a pedestrian collision and a light collision more clearly.

以上、本発明の実施形態について説明したが、本発明は、これ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で変更が可能である。また、上記した各形態は相互に組み合わせることが可能である。 Although the embodiments of the present invention have been described above, the present invention is not limited to this, and changes can be made without departing from the gist of the present invention. In addition, the above-mentioned forms can be combined with each other.

例えば、本実施形態では、図1(B)を参照して、衝突検知部15としてチューブ型を採用したが、チャンバ型の衝突検知部15を採用することもできる。 For example, in the present embodiment, the tube type is adopted as the collision detection unit 15 with reference to FIG. 1 (B), but the chamber type collision detection unit 15 can also be adopted.

また、図1(B)を参照して、上記では衝突検知部15の内部圧力変化や排出空気流量の変化に基づいて、歩行者衝突および軽衝突を検知したが、衝突検知部15として衝突時の変形により出力が変化する光ファイバー等を採用することもできる。 Further, referring to FIG. 1 (B), in the above description, a pedestrian collision and a light collision were detected based on a change in the internal pressure of the collision detection unit 15 and a change in the exhaust air flow rate. It is also possible to adopt an optical fiber or the like whose output changes due to the deformation of.

更に、図1(B)を参照して、上記説明では、衝撃吸収部17を合成樹脂板から構成したが、衝撃吸収部17を部分的にフォーム材等の他の部材から構成することもできる。 Further, with reference to FIG. 1B, in the above description, the shock absorbing portion 17 is made of a synthetic resin plate, but the shock absorbing portion 17 may be partially made of another member such as a foam material. ..

更に、図2(B)を参照して、下面部151の厚みを前面部152および上面部153よりも相対的に厚くすることもでき、これにより歩行者衝突と軽衝突とを区別して検知する効果を顕著にできる。 Further, with reference to FIG. 2B, the thickness of the lower surface portion 151 can be made relatively thicker than that of the front surface portion 152 and the upper surface portion 153, whereby a pedestrian collision and a light collision can be detected separately. The effect can be remarkable.

更に、図2(B)を参照して、下面部151の下面にリブを形成し、または、下面部151を部分的あるいは全体的に肉厚とすることで、下面部151の剛性を更に向上することもできる。 Further, with reference to FIG. 2B, the rigidity of the lower surface portion 151 is further improved by forming ribs on the lower surface of the lower surface portion 151 or making the lower surface portion 151 partially or wholly thickened. You can also do it.

10 車両
11 衝突検知装置
12 フロントフード
13 バンパビーム
14 バンパフェイス
15 衝突検知部
151 下面部
152 前面部
153 上面部
154 軟質部
155 硬質部
16 グリル
17 衝撃吸収部
171 水平部材
172 垂直部材
173 前面
18 検出装置
19 速度センサ
20 ECU
21 CPU
22 エアバッグ
23 ポップアップフード
24 RAM
25 報知装置
26 歩行者
27 小動物
10 Vehicle 11 Collision detection device 12 Front hood 13 Bumper beam 14 Bumper face 15 Collision detection part 151 Bottom part 152 Front part 153 Top part 154 Soft part 155 Hard part 16 Grill 17 Shock absorption part 171 Horizontal member 172 Vertical member 173 Front surface 18 Detection device 19 Speed sensor 20 ECU
21 CPU
22 Airbag 23 Pop-up hood 24 RAM
25 Notification device 26 Pedestrian 27 Small animals

Claims (8)

車両のバンパフェイスとバンパビームとの間で車両幅方向に沿って伸び、前記車両が衝突した際に変形することで衝撃を吸収する衝撃吸収部と、
前記車両幅方向に沿って伸び、前記車両が衝突した際に変形することで、前記衝突が発生したことを検知する衝突検知部と、を具備し、
前記衝突検知部の少なくとも下部分は、前記衝撃吸収部と一体化していることを特徴とする衝突検知装置。
A shock absorbing part that extends along the vehicle width direction between the bumper face of the vehicle and the bumper beam and absorbs the impact by deforming when the vehicle collides.
It is provided with a collision detection unit that detects the occurrence of the collision by extending along the vehicle width direction and deforming when the vehicle collides.
A collision detection device characterized in that at least a lower portion of the collision detection unit is integrated with the shock absorbing unit.
前記衝突検知部の前記下部分は前記衝撃吸収部と同一材料であり、前記衝突検知部の上部分は前記衝撃吸収部よりも軟性に優れる材料から成ることを特徴とする請求項1に記載の衝突検知装置。 The first aspect of claim 1, wherein the lower portion of the collision detection unit is made of the same material as the impact absorbing portion, and the upper portion of the collision detecting portion is made of a material having a softer property than that of the impact absorbing portion. Collision detection device. 前記衝撃吸収部は、合成樹脂板から成ることを特徴とする請求項1または請求項2に記載の衝突検知装置。 The collision detection device according to claim 1 or 2, wherein the shock absorbing portion is made of a synthetic resin plate. 前記衝突検知部は、前記衝撃吸収部の前面と前記バンパフェイスとの間に配置されることを特徴とする請求項1から請求項3の何れかに記載の衝突検知装置。 The collision detection device according to any one of claims 1 to 3, wherein the collision detection unit is arranged between the front surface of the shock absorbing unit and the bumper face. 前記衝突検知部は、下面部と、前面部と、上面部と、を有し、
前記下面部は、前記衝撃吸収部と同質の硬質材料から成り、
前記前面部および前記上面部は、前記下面部よりも軟質な材料から成ることを特徴とする請求項1から請求項4の何れかに記載の衝突検知装置。
The collision detection unit has a lower surface portion, a front surface portion, and an upper surface portion.
The lower surface portion is made of a hard material of the same quality as the shock absorbing portion.
The collision detection device according to any one of claims 1 to 4, wherein the front surface portion and the upper surface portion are made of a material softer than the lower surface portion.
前記衝突検知部は、チューブ型であることを特徴とする請求項1から請求項5の何れかに記載の衝突検知装置。 The collision detection device according to any one of claims 1 to 5, wherein the collision detection unit is a tube type. 前記衝突検知部は、前記衝撃吸収部の前面に形成されることを特徴とする請求項1から請求項6の何れかに記載の衝突検知装置。 The collision detection device according to any one of claims 1 to 6, wherein the collision detection unit is formed on the front surface of the shock absorbing unit. 前記衝突検知部は、前記衝撃吸収部の上端に形成されることを特徴とする請求項1から請求項7の何れかに記載の衝突検知装置。

The collision detection device according to any one of claims 1 to 7, wherein the collision detection unit is formed at the upper end of the shock absorbing unit.

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