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JP2009220787A - Collision detection device - Google Patents

Collision detection device Download PDF

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Publication number
JP2009220787A
JP2009220787A JP2008070261A JP2008070261A JP2009220787A JP 2009220787 A JP2009220787 A JP 2009220787A JP 2008070261 A JP2008070261 A JP 2008070261A JP 2008070261 A JP2008070261 A JP 2008070261A JP 2009220787 A JP2009220787 A JP 2009220787A
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Prior art keywords
chamber
pressure
collision detection
detection device
chamber member
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JP2008070261A
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Japanese (ja)
Inventor
Takatoshi Tanabe
貴敏 田辺
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Denso Corp
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Denso Corp
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Priority to JP2008070261A priority Critical patent/JP2009220787A/en
Priority to DE102009010476.3A priority patent/DE102009010476B4/en
Publication of JP2009220787A publication Critical patent/JP2009220787A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0136Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to actual contact with an obstacle, e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/48Bumpers, 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
    • B60R19/483Bumpers, 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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a collision detection device capable of enhancing efficiency in mounting work of a pressure sensor, retaining an air-tight closing property of a chamber body and a pressure introduction pipe, and maintaining high collision detection accuracy. <P>SOLUTION: The collision detection device has a reinforcement 1; a chamber member 2 made of resin; a pressure sensor 3; and the pressure introduction pipe 30. The chamber member 2 comprises the chamber body 20 made of soft resin for dividing an internal space 21; and an insert member 22 insert-molded to the chamber body 20 and having an opening inserted with one end of the pressure introduction pipe 30. Since the insert member has higher strength than the chamber member body, it becomes the one having less deformation of the opening and high accuracy. Therefore, a clearance of a through-hole of the chamber member and the pressure introduction pipe penetrated with it can be made in a constant range, ventilation property of the chamber member is given, required air-tight closing property is retained, and the collision detection accuracy can be maintained. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、車両に取り付けられ車両に対する衝突を検知する衝突検知装置に関し、詳しくは、車両のバンパへの衝突を検知する衝突検知装置に関する。   The present invention relates to a collision detection device that is attached to a vehicle and detects a collision with the vehicle, and more particularly to a collision detection device that detects a collision of a vehicle with a bumper.

近年、車両において事故時の安全性の向上が図られている。車両の安全性に関して、事故時に車両の搭乗者の安全性を確保するだけでなく、車両に歩行者が衝突したときに歩行者が致命的なダメージを受けないことも求められてきている。   In recent years, safety has been improved in vehicles in the event of an accident. Regarding vehicle safety, not only is it necessary to ensure the safety of the vehicle occupant in the event of an accident, but it has also been required that the pedestrian not be fatally damaged when the pedestrian collides with the vehicle.

車両に衝突した歩行者の保護手段としては、車両に衝突してボンネットに倒れ込んできた歩行者が受ける傷害値(歩行者が受ける衝撃)を下げる方法が考えられている。このような保護装置において歩行者などの車両への衝突を検知することが重要となっている。   As a means for protecting a pedestrian that has collided with a vehicle, a method of reducing the injury value (impact received by the pedestrian) received by a pedestrian who collided with the vehicle and fell into the hood has been considered. In such a protective device, it is important to detect a collision with a vehicle such as a pedestrian.

衝突検知装置では衝突を検知するため、図6に示すように、チャンバ部材にはチャンバ部材内部の圧力を導入する圧力センサの圧力導入管がチャンバ部材の通孔に挿入された状態で配置されている。チャンバ部材は通常その肉厚が薄く、圧力導入管を挿入する場合、通孔の穴を広げないように取り付けを行う必要があった。特開2001−263313(特許文献1)には、樹脂成型品の取り付け面に異種素材から成る固定部材を保持するクリップ材を設けた樹脂成型品の取り付け構造が提案されている。クリップ材に固定部材を嵌め入れることで樹脂成型品に固定部材が組み付けられる。この固定部材は必要に応じてクリップ材から取り外すことができるため、樹脂成型品と例えば金属などの異種素材から成る固定部材とを簡単に分解することが可能である。
特開2001−263313号公報
In order to detect a collision in the collision detection device, as shown in FIG. 6, a pressure introduction pipe of a pressure sensor for introducing a pressure inside the chamber member is arranged in the chamber member in a state inserted into the through hole of the chamber member. Yes. The chamber member is usually thin, and when the pressure introducing tube is inserted, the chamber member needs to be attached so as not to widen the hole of the through hole. Japanese Patent Application Laid-Open No. 2001-263313 (Patent Document 1) proposes a resin molded product mounting structure in which a clip material for holding a fixing member made of a different material is provided on the resin molded product mounting surface. The fixing member is assembled to the resin molded product by fitting the fixing member into the clip material. Since this fixing member can be removed from the clip material as necessary, the resin molded product and the fixing member made of a different material such as metal can be easily disassembled.
JP 2001-263313 A

チャンバ部材は略密閉された空間で成形されるため、成形後にチャンバ部材に他の部材を内部に取り付けることはできなかった。また、レインフォースの前面に配置されたチャンバ部材に、圧力センサの圧力導入管の取り付けにおいて、圧力導入管の挿入の位置決めに時間がかかることがあり、作業効率が悪かった。チャンバ部材は、軟質樹脂材料であり、断面の厚さは数mm程度の薄い構造のため、圧力導入管の取り付け時に通孔の穴が広がり、変形することがあった。そのため、チャンバ部材の通孔とそれに挿通する圧力導入管とのクリアランスや、チャンバ部材の通気性、密閉性において問題となることがあった。   Since the chamber member is molded in a substantially sealed space, other members could not be attached to the chamber member after molding. In addition, when the pressure introduction pipe of the pressure sensor is attached to the chamber member arranged in front of the reinforcement, it may take time to position the pressure introduction pipe, and the work efficiency is poor. The chamber member is made of a soft resin material and has a thin cross-section having a thickness of about several millimeters. Therefore, when the pressure introduction pipe is attached, the hole of the through hole may be expanded and deformed. For this reason, there is a problem in the clearance between the through hole of the chamber member and the pressure introducing pipe inserted therethrough, the air permeability and the sealing property of the chamber member.

本願発明は、このような事情に鑑みてなされたものであり、圧力センサの取り付け作業の作業性を向上させ、チャンバ部材と圧力導入管の密閉性を保持し、高い衝突検知精度を維持することができる衝突検知装置を提供することを目的とする。   The present invention has been made in view of such circumstances, and improves the workability of pressure sensor mounting work, maintains the airtightness of the chamber member and the pressure introducing pipe, and maintains high collision detection accuracy. An object of the present invention is to provide a collision detection device capable of

上記課題を解決するために本発明者は車両のバンパへ組み付けることができる衝突検知装置について検討を重ねた結果本発明をなすに至った。   In order to solve the above-mentioned problems, the present inventor has studied the collision detection device that can be assembled to the bumper of the vehicle, and as a result, has reached the present invention.

本発明の衝突検知装置は、車両の基部に水平方向に固定されたレインフォースと、レインフォースの前面に配置され水平方向に延びる梁状の内部空間を形成する樹脂製のチャンバ部材と、レインフォースに保持され内部空間の圧力を検出する圧力センサと、レインフォースと圧力センサの間に設けられ、圧力センサに内部空間の圧力を導入する圧力導入管と、を有し、衝突によるチャンバ部材の変形に基づくチャンバ空間の圧力変動を圧力センサで検出することにより衝突を検知する衝突検知装置であって、チャンバ部材は、内部空間を区画する軟質樹脂製のチャンバ本体とチャンバ本体にインサート成形され圧力導入管の一端が挿入される開口を有するインサート部材と、からなることを特徴とする。   A collision detection device according to the present invention includes a reinforcement that is horizontally fixed to a base portion of a vehicle, a resin chamber member that is disposed in front of the reinforcement and that forms a beam-like internal space, and a reinforcement. And a pressure sensor for detecting the pressure in the internal space and a pressure introduction pipe provided between the reinforcement and the pressure sensor for introducing the pressure in the internal space to the pressure sensor, and deformation of the chamber member due to the collision A collision detection device for detecting a collision by detecting a pressure variation in a chamber space based on a pressure sensor, wherein a chamber member is insert-molded into a chamber body made of a soft resin that defines an internal space, and pressure is introduced. And an insert member having an opening into which one end of the tube is inserted.

本発明の衝突検知装置は、そのチャンバ部材がインサート成形されたインサート部材を持つ。インサート部材が容易に目視できるため、圧力導入管の取り付け作業の作業性が向上する。しかもインサート部材の開口に圧力センサの圧力導入管が挿入されるが、インサート部材は軟質樹脂で構成されたチャンバ部材本体よりも高強度であるため開口の変形が少なく高精度のものとなる。このため、チャンバ部材の通孔とそれに挿通する圧力導入管とのクリアランスが一定範囲にでき、チャンバ部材の通気性を備えると共に必要な密閉性を保持し、衝突検知精度が維持できる。   The collision detection apparatus of the present invention has an insert member in which the chamber member is insert-molded. Since the insert member can be easily seen, the workability of the work for attaching the pressure introducing pipe is improved. In addition, the pressure introducing tube of the pressure sensor is inserted into the opening of the insert member. However, since the insert member has higher strength than the chamber member body made of a soft resin, the opening is not deformed and is highly accurate. For this reason, the clearance between the through hole of the chamber member and the pressure introducing pipe inserted therethrough can be within a certain range, the air permeability of the chamber member can be maintained, the necessary sealing performance can be maintained, and the collision detection accuracy can be maintained.

本発明の衝突検知装置は、車両の基部に固定されるもので、レインフォースとチャンバ部材とインサート部材と圧力センサと圧力導入管とを有する。この衝突検知装置が固定される車両は、通常道路を走行する乗用車、トラック、バス、路面電車等の車両を言う。より具体的にはバンパ等の衝突緩衝器を備えた路上走行車両を言う。   The collision detection device of the present invention is fixed to the base of a vehicle and includes a reinforcement, a chamber member, an insert member, a pressure sensor, and a pressure introduction pipe. A vehicle to which the collision detection device is fixed refers to a vehicle such as a passenger car, a truck, a bus, and a tram that normally travels on a road. More specifically, it refers to a road traveling vehicle equipped with a bumper or other collision buffer.

衝突検知装置を構成するレインフォースとは、通常、車両の前方端及び後方端に車両幅方向に伸びた衝突力を受ける部材として機能する。レインフォースあるいはレインフォースとこれを補強する補強材は、衝突に対して車両を保護するために相当の強度を必要とし、鋼板、アルミ合金押出材、強化樹脂等で製造されている。レインフォースは、チャンバ部材と対向し、チャンバ部材に作用する衝突力を受けるに十分な広さの前面部分と強度とを必要とする。   The reinforce constituting the collision detection device normally functions as a member that receives a collision force extending in the vehicle width direction at the front end and the rear end of the vehicle. Reinforces or reinforcements and reinforcements that reinforce them require considerable strength to protect the vehicle against collisions and are made of steel plates, aluminum alloy extrusions, reinforced resins, and the like. Reinforce requires a front portion and strength large enough to face the chamber member and receive a collision force acting on the chamber member.

チャンバ部材は、チャンバ本体とインサート部材からなる。インサート部材を金型に装填した後、押出装置より軟質樹脂をパイプ状に押し出してパリソンを作り、一対の金型を閉じてパリソンを囲い込みパリソン内に圧縮空気を吹き込み、吹き込まれた圧縮空気でパリソンを膨らませ、パリソンの外周面を金型の型面に押しつける。このパリソンを膨らませる時にインサート部材をパリソンで包み込み、同時にパリソンは型面で型成形され、成型されたパリソンが冷却固化する。この後型から成型品を取りだし、バリ等を通常の方法で除去し、さらに、インサート部材の通孔を覆う成型された軟質樹脂の部分に共穴を穿ちチャンバ部材が完成する。   The chamber member includes a chamber body and an insert member. After the insert member is loaded into the mold, a soft resin is extruded from the extruder into a pipe shape to make a parison, the pair of molds are closed, the parison is enclosed, and compressed air is blown into the parison, and the parison is blown with the compressed air that has been blown And press the outer periphery of the parison against the mold surface. When the parison is inflated, the insert member is wrapped with the parison. At the same time, the parison is molded on the mold surface, and the molded parison is cooled and solidified. Thereafter, the molded product is taken out from the mold, burrs and the like are removed by a normal method, and further, a common hole is formed in a portion of the molded soft resin covering the through hole of the insert member, thereby completing the chamber member.

このチャンバ部材は水平方向に延びる梁状の内部空間を有する。ここで梁状とは水平方向に延び断面が略一定のものを言い、好ましくは断面方形状のものが好ましい。このチャンバ部材は、例えば、歩行者が車両に衝突したときに歩行者の脚部がチャンバ部材の前面に衝突し、チャンバ部材の衝突した部分が歩行者の脚部とレインフォースとに狭持されて潰れることを想定している。即ち、チャンバ部材の歩行者の脚部に衝突した前面壁の特定の部分のみがレインフォース側に押圧されて潰れる。歩行者の脚部の衝突していないチャンバ部材の前面壁の部分は潰れずに変形しない。チャンバ部材の内部空間は完全な密閉構造とする必要はなく、衝突による押し潰れによる内部空間の容積減少に対して圧力変動が確実に発生するものであればよい。チャンバ部材を構成するチャンバ本体は、軟質樹脂で製造することができ、軟質樹脂としてはポリエチレン、ポリプロピレン等の変形が容易な合成樹脂を使用できる。   This chamber member has a beam-like internal space extending in the horizontal direction. Here, the beam shape means a shape that extends in the horizontal direction and has a substantially constant cross section, and preferably has a rectangular cross section. In this chamber member, for example, when a pedestrian collides with a vehicle, the leg of the pedestrian collides with the front surface of the chamber member, and the collided portion of the chamber member is sandwiched between the leg of the pedestrian and the reinforcement. It is assumed that it will collapse. That is, only a specific portion of the front wall that collides with the leg of the pedestrian of the chamber member is pressed and crushed by the reinforcement side. The portion of the front wall of the chamber member that does not collide with the legs of the pedestrian is not crushed and does not deform. The internal space of the chamber member does not have to be a completely sealed structure, and any pressure variation may be generated as long as the volume of the internal space is reduced due to crushing due to a collision. The chamber main body constituting the chamber member can be manufactured from a soft resin, and as the soft resin, a synthetic resin such as polyethylene or polypropylene that can be easily deformed can be used.

インサート部材は、開口を有する中央部とその中央部の周縁に一体的に形成されたフランジ部を有することが好ましい。フランジ部を有することで、インサート部材の接するチャンバ本体との隙間をなくし、チャンバ本体とインサート部材とを密接にすることができ、空気の漏れをなくすことができる。またフランジ部があることで、チャンバ本体から外れることを防ぐことができる。   The insert member preferably has a central portion having an opening and a flange portion formed integrally with the periphery of the central portion. By having the flange portion, it is possible to eliminate a gap between the insert body and the chamber main body, close the chamber main body and the insert member, and eliminate air leakage. Moreover, it can prevent coming off from a chamber main body by having a flange part.

またインサート部材は、中央部とその中央部の周縁に形成されたフランジ部は円形であることが好ましい。インサート部材が円形であることにより、製造しやすく、内圧が加わったときに均等に圧力が加わる。またチャンバ本体から脱落を防止できる。   Moreover, as for an insert member, it is preferable that the flange part formed in the center part and the periphery of the center part is circular. Due to the circular shape of the insert member, it is easy to manufacture and the pressure is evenly applied when the internal pressure is applied. Further, it can be prevented from falling off from the chamber body.

インサート部材の外周部分は通常チャンバ本体に覆われているが、開口を持つ中央部はチャンバ本体に覆われておらず、外側から目視できる。このため、目視によりインサート部材の位置が容易に分かり、かつその開口も容易にわかることになる。このため、圧力導入管の取り付け作業の作業性が向上する。またインサート部材の開口に圧力センサの圧力導入管の一端を挿入したときに、チャンバ部材の通孔とそれに挿通する圧力導入管とのクリアランスが一定範囲にでき、チャンバ部材の通気性を備えると共に必要な密閉性を保持し、衝突検知精度が維持できる。またインサート部材はチャンバ本体よりも硬質な材質で製造されるのが好ましく、チャンバ本体の補強としても機能する。   The outer peripheral part of the insert member is usually covered with the chamber body, but the central part with the opening is not covered with the chamber body and can be seen from the outside. For this reason, the position of the insert member can be easily understood by visual observation, and the opening thereof can also be easily understood. For this reason, the workability of the work of attaching the pressure introduction pipe is improved. In addition, when one end of the pressure introduction pipe of the pressure sensor is inserted into the opening of the insert member, the clearance between the through hole of the chamber member and the pressure introduction pipe inserted therethrough can be kept within a certain range, and the air permeability of the chamber member is provided and necessary. Maintains a good sealing performance and maintains collision detection accuracy. The insert member is preferably made of a material harder than the chamber body and functions as a reinforcement for the chamber body.

圧力センサは、チャンバ部材の内部空間の圧力を検出するセンサであり、従来の衝突検出装置に使用されているセンサあるいは空気圧を測定する空気圧測定センサを使用することができる。   The pressure sensor is a sensor that detects the pressure in the internal space of the chamber member, and a sensor that is used in a conventional collision detection device or an air pressure measurement sensor that measures air pressure can be used.

圧力導入管は、チャンバ空間の圧力を圧力センサに導入する略円筒状の管であり、インサート部材の開口に一端を挿入され、チャンバ本体で区画された内部空間に圧力導入管の先端が位置することになる。チャンバ本体と圧力導入管の外周との間にはわずかに隙間が形成されており、この隙間が呼吸孔として作用するので、衝突が発生していない状態においては、チャンバ空間内の気圧が外気と一定に保たれている。   The pressure introducing tube is a substantially cylindrical tube that introduces the pressure in the chamber space into the pressure sensor, and one end is inserted into the opening of the insert member, and the tip of the pressure introducing tube is located in the internal space defined by the chamber body. It will be. A slight gap is formed between the chamber body and the outer periphery of the pressure introducing pipe, and this gap acts as a breathing hole. Therefore, in a state where no collision occurs, the atmospheric pressure in the chamber space is separated from the outside air. It is kept constant.

なお、本発明の衝突検知装置には、バンパに備えられる部品を設けることができる。例えば、レインフォースの前面側でチャンバ部材の下方にショックアブソーバを設けることができる。また、チャンバ部材の前面に装飾用の軟質カバーを設けることもできる。   The collision detection device of the present invention can be provided with components provided in the bumper. For example, a shock absorber can be provided below the chamber member on the front side of the reinforcement. In addition, a decorative soft cover can be provided on the front surface of the chamber member.

以下、実施例を用いて本発明を説明する。   Hereinafter, the present invention will be described using examples.

本発明の実施例の衝突検知装置を図1〜図5に示す。図1は、衝突検知装置を組み付けた車両の前側部分の上から見た模式図であり、図2は、衝突検知装置の横から見た要部断面図であり、図3は、衝突検知装置に使用するインサート部材の斜視図であり、図4は、衝突検知装置の上から見た要部断面図、図5は衝突検知装置の要部正面図である。   A collision detection apparatus according to an embodiment of the present invention is shown in FIGS. FIG. 1 is a schematic view seen from above a front portion of a vehicle assembled with a collision detection device, FIG. 2 is a cross-sectional view of a main part seen from the side of the collision detection device, and FIG. 4 is a perspective view of the main part of the collision detection device viewed from above, and FIG. 5 is a front view of the main part of the collision detection device.

この衝突検知装置は、レインフォース1、チャンバ部材2、圧力センサ3、アブソーバ4および演算手段(図示せず)と、から構成されている。   This collision detection device is composed of a reinforcement 1, a chamber member 2, a pressure sensor 3, an absorber 4, and a calculation means (not shown).

レインフォース1は、図2にその断面を示すように、金属製の前方壁11、後方壁12、上方壁13、下方壁14及び中央壁15からなるフレーム構造を持つ。このレインフォース1は水平方向に延び、車両の1対のサイドメンバー6の前方先端部に固定されている。なおサイドメンバー6は車両の基部を構成する強度メンバーで、その先端がエンジンルームの前方に突出している。   The reinforcement 1 has a frame structure including a metal front wall 11, a rear wall 12, an upper wall 13, a lower wall 14, and a central wall 15, as shown in FIG. 2. The reinforcement 1 extends in the horizontal direction and is fixed to the front end portions of a pair of side members 6 of the vehicle. The side member 6 is a strength member that constitutes the base of the vehicle, and its tip protrudes forward of the engine room.

チャンバ部材2は、断面はほぼ方形で、水平方向に延びる梁状の内部空間21を有し、チャンバ本体20とインサート部材22とからなる。インサート部材22を金型に装填し、軟質樹脂を押し出してパリソンを作り、一対の金型を閉じてパリソンを囲い込み、圧縮空気でこのパリソンを膨らませ、パリソンの外周面を金型の型面に押しつける。パリソンを膨らませるときにインサート部材22を包み込み、パリソンは型面で型成形される。冷却固化した後、バリ等を取り除き、インサート部材22の通孔を覆う成型された軟質樹脂の部分に共穴を穿ちチャンバ部材2は製造される。インサート部材22が配置されたことで、圧力導入管30の取り付け位置が目視できるため、取り付けの作業性が向上し、チャンバ部材2の通孔とそれに挿通する圧力導入管30とのクリアランスが一定範囲にでき、チャンバ部材2の通気性を備え、必要な密閉性を保持できる。チャンバ部材2は、レインフォース1の前方壁11の前面の上側部分に当接して固定されている。   The chamber member 2 is substantially rectangular in cross section, has a beam-like internal space 21 extending in the horizontal direction, and includes a chamber body 20 and an insert member 22. Insert member 22 is loaded into a mold, soft resin is extruded to make a parison, a pair of molds are closed to enclose the parison, the parison is inflated with compressed air, and the outer peripheral surface of the parison is pressed against the mold surface . When the parison is inflated, the insert member 22 is wrapped, and the parison is molded on the mold surface. After cooling and solidifying, the burr and the like are removed, and the chamber member 2 is manufactured by making a common hole in the molded soft resin portion covering the through hole of the insert member 22. Since the mounting position of the pressure introducing pipe 30 can be visually observed by the insertion of the insert member 22, the workability of the mounting is improved, and the clearance between the through hole of the chamber member 2 and the pressure introducing pipe 30 inserted through the chamber member 2 is within a certain range. In addition, the air permeability of the chamber member 2 can be provided, and the necessary airtightness can be maintained. The chamber member 2 is fixed in contact with the upper portion of the front surface of the front wall 11 of the reinforcement 1.

インサート部材22は、図3に示すように中央部220に開口222を有し、その中央部220の周縁に一体的に形成されたフランジ部221を有する。フランジ部221は、チャンバ本体20の樹脂で覆われており、フランジ部221があることで、チャンバ本体20との隙間をなくし、チャンバ本体20に確実に固定される。   As shown in FIG. 3, the insert member 22 has an opening 222 in the central portion 220, and a flange portion 221 that is integrally formed on the periphery of the central portion 220. The flange portion 221 is covered with the resin of the chamber main body 20, and the flange portion 221 eliminates a gap with the chamber main body 20 and is securely fixed to the chamber main body 20.

インサート部材22は、中央部220とフランジ部221を円形とすることで、定幅図形となり、取り付けられたチャンバ本体20から脱落することがない。また円形とすることで、製造しやすく、内圧が加わったときに均等に圧力が加わる。またインサート部材22は、中央部220の開口222がチャンバ本体20に覆われておらず、外側から目視できる。目視により、圧力導入管30の取り付け位置が容易に分かり、取り付けの作業性が向上する。インサート部材22は、チャンバ本体20よりも硬質樹脂で形成されているため高強度で、チャンバ本体20の穴が拡大、変形することが少なく、圧力導入管30を確実に固定することができるので、衝突における検知精度を確保することができる。   The insert member 22 has a constant width figure by making the central portion 220 and the flange portion 221 circular, and does not fall off from the attached chamber body 20. Moreover, by making it circular, it is easy to manufacture and pressure is applied evenly when internal pressure is applied. Moreover, the opening 222 of the center part 220 is not covered with the chamber main body 20, and the insert member 22 can be visually observed from the outside. The mounting position of the pressure introducing tube 30 can be easily understood by visual observation, and the mounting workability is improved. Since the insert member 22 is formed of a hard resin than the chamber main body 20, the insert member 22 has high strength, the hole of the chamber main body 20 is less likely to expand and deform, and the pressure introduction tube 30 can be securely fixed. Detection accuracy in a collision can be ensured.

圧力センサ3は、チャンバ部材2の内部空間21の圧力を測定するためのセンサであり、従来から知られたもので、ガス圧を検出し、電気信号として演算手段に算出する。圧力センサ3はレインフォース1の前方壁11の中央部に固定されている。   The pressure sensor 3 is a sensor for measuring the pressure in the internal space 21 of the chamber member 2 and is conventionally known. The pressure sensor 3 detects a gas pressure and calculates it as an electric signal to an arithmetic means. The pressure sensor 3 is fixed to the central portion of the front wall 11 of the reinforcement 1.

圧力導入管30は、チャンバ空間の圧力を圧力センサ3に導入する管であり、チャンバ部材2の外側からインサート部材22の開口222に一端を挿入される。圧力導入管30が挿入される長さは、少しでも入っていればよい。   The pressure introducing pipe 30 is a pipe for introducing the pressure in the chamber space into the pressure sensor 3, and one end is inserted into the opening 222 of the insert member 22 from the outside of the chamber member 2. The length into which the pressure introducing pipe 30 is inserted may be as small as possible.

アブソーバ4は、チャンバ部材2の下方に位置し、レインフォース1の前面の下側部分に配置されている。アブソーバ4は、発泡樹脂として型成形されたもので、その前面はバンパカバー5の内周面に一致する形状に形成されている。   The absorber 4 is located below the chamber member 2 and is disposed in the lower portion of the front surface of the reinforcement 1. The absorber 4 is molded as a foamed resin, and its front surface is formed in a shape that matches the inner peripheral surface of the bumper cover 5.

演算手段は、圧力センサ3に接続され、圧力センサ3の検出信号からチャンバ部材2の内部空間21の圧力を算出するとともに、算出された圧力から衝突の判定を行う。演算手段は、あらかじめ車両に搭載されたCPUに組み込むことも、あるいは歩行者保護装置に組み込まれたものでもよい。   The calculation means is connected to the pressure sensor 3 and calculates the pressure in the internal space 21 of the chamber member 2 from the detection signal of the pressure sensor 3 and determines a collision from the calculated pressure. The calculation means may be incorporated in advance in a CPU mounted on the vehicle, or may be incorporated in a pedestrian protection device.

バンパカバー5は、板状の樹脂成形体で、チャンバ部材2及びアブソーバ4を覆う装飾部材である。   The bumper cover 5 is a decorative member that covers the chamber member 2 and the absorber 4 with a plate-shaped resin molded body.

本実施例の衝突検知装置による衝突の検知について以下に説明する。   The collision detection by the collision detection apparatus of the present embodiment will be described below.

本実施例の衝突検知装置が組み付けられた車両のバンパは、図1に示したように、バンパカバー5がチャンバ部材2とアブソーバ4を被覆し、車両のバンパの外表面を形成している。   As shown in FIG. 1, the bumper cover 5 of the vehicle in which the collision detection device of this embodiment is assembled has the bumper cover 5 covering the chamber member 2 and the absorber 4 to form the outer surface of the bumper of the vehicle.

この車両のバンパに歩行者が衝突すると、歩行者の脚部が車両のバンパを押圧することとなる。歩行者の脚部はバンパカバー5を介してチャンバ部材2を押圧し、チャンバ部材2の押圧された部分は後方に変形する。チャンバ部材2の潰れにより内部空間21の容積が減少し、内部空間21内の空気圧力が増大する。この空気圧力の増大が圧力導入管30に導入され、圧力センサ3により検出され、演算手段に送られて衝突が判断される。   When a pedestrian collides with the bumper of the vehicle, the leg of the pedestrian presses the bumper of the vehicle. The leg part of the pedestrian presses the chamber member 2 via the bumper cover 5, and the pressed part of the chamber member 2 is deformed rearward. Due to the collapse of the chamber member 2, the volume of the internal space 21 decreases, and the air pressure in the internal space 21 increases. This increase in air pressure is introduced into the pressure introducing pipe 30, detected by the pressure sensor 3, and sent to the computing means to determine a collision.

なお、演算手段は、圧力の変化の度合い(変化割合)から衝突物が歩行者等の人体あるいはそれに類するものであるか、軽量の路上障害物や他の車両など堅い重量の構造物であるかを判定することもできる。このとき、演算手段には、車両の速度データも入力されたことが好ましい。   The calculation means is whether the collision object is a human body such as a pedestrian or the like based on the degree of change in pressure (change rate), or is it a structure with a heavy weight such as a lightweight road obstacle or another vehicle. Can also be determined. At this time, it is preferable that vehicle speed data is also input to the calculation means.

本発明は上述した実施例に限定されるものではなく、本発明の趣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云うまでもない。例えば、インサート部材22のフランジ部221の形状を大きくすることで、チャンバ本体20とインサート部材22との隙間をより少なくし、密閉性を確保することができる。   The present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the present invention. For example, by increasing the shape of the flange portion 221 of the insert member 22, the gap between the chamber body 20 and the insert member 22 can be further reduced, and sealing performance can be ensured.

実施例の衝突検知装置を組み付けた車両の前側部分の上から見た模式図である。It is the schematic diagram seen from the front side part of the vehicle which assembled | attached the collision detection apparatus of the Example. 実施例の衝突検知装置の横から見た要部断面図である。It is principal part sectional drawing seen from the side of the collision detection apparatus of an Example. 実施例の衝突検知装置に使用するインサート部材の斜視図である。It is a perspective view of the insert member used for the collision detection apparatus of an Example. 実施例の衝突検知装置の上から見た要部断面図である。It is principal part sectional drawing seen from the collision detection apparatus of an Example. 実施例の衝突検知装置の要部正面図である。It is a principal part front view of the collision detection apparatus of an Example. 従来の技術を示す衝突検知装置の上から見た要部断面図である。It is principal part sectional drawing seen from the collision detection apparatus which shows the prior art.

符号の説明Explanation of symbols

1:レインフォース 11:前方壁
2:チャンバ部材 20:チャンバ本体 21:内部空間
22:インサート部材 220: 中央部 221:フランジ部 222:開口
3:圧力センサ 30:圧力導入管
4:アブソーバ 5:バンパカバー 6:サイドメンバー
1: Reinforce 11: Front wall
2: Chamber member 20: Chamber body 21: Internal space 22: Insert member 220: Center portion 221: Flange portion 222: Opening 3: Pressure sensor 30: Pressure introducing pipe 4: Absorber 5: Bumper cover 6: Side member

Claims (3)

車両の基部に水平方向に固定されたレインフォースと、
該レインフォースの前面に配置され水平方向に延びる梁状の内部空間を形成する樹脂製のチャンバ部材と、
該レインフォースに保持され該内部空間の圧力を検出する圧力センサと、
該レインフォースと該圧力センサの間に設けられ、該圧力センサに該内部空間の圧力を導入する圧力導入管と、
を有し、衝突による該チャンバ部材の変形に基づく該チャンバ空間の圧力変動を該圧力センサで検出することにより衝突を検知する衝突検知装置であって、
該チャンバ部材は、該内部空間を区画する軟質樹脂製のチャンバ本体と該チャンバ本体にインサート成形され該圧力導入管の一端が挿入される開口を有するインサート部材と、からなることを特徴とする衝突検知装置。
Reinforce fixed horizontally at the base of the vehicle,
A resin-made chamber member that forms a beam-like internal space disposed in front of the reinforcement and extending in the horizontal direction;
A pressure sensor that is held by the reinforcement and detects the pressure in the internal space;
A pressure introducing pipe provided between the reinforcement and the pressure sensor, for introducing the pressure of the internal space to the pressure sensor;
A collision detection device that detects a collision by detecting a pressure variation in the chamber space based on deformation of the chamber member due to a collision with the pressure sensor,
The chamber member is composed of a soft resin chamber main body that defines the internal space, and an insert member that is insert-molded in the chamber main body and has an opening into which one end of the pressure introducing pipe is inserted. Detection device.
前記インサート部材は前記開口を有する中央部と該中央部の周縁に一体的に形成されたフランジ部とからなる請求項1記載の衝突検知装置。   The collision detection device according to claim 1, wherein the insert member includes a central portion having the opening and a flange portion integrally formed on a peripheral edge of the central portion. 前記インサート部材は該中央部および該中央部の周縁に形成された該フランジ部は円形である請求項1記載の衝突検知装置。   The collision detection device according to claim 1, wherein the insert member has a circular shape at the center portion and the flange portion formed at a peripheral edge of the center portion.
JP2008070261A 2008-03-18 2008-03-18 Collision detection device Pending JP2009220787A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011125147A1 (en) * 2010-04-01 2011-10-13 トヨタ自動車株式会社 Vehicle internal/external structure
WO2012108051A1 (en) * 2011-02-10 2012-08-16 トヨタ自動車株式会社 Collision detection device and occupant protection system
JP2014073753A (en) * 2012-10-04 2014-04-24 Denso Corp Collision detection device for vehicle
JP2014076623A (en) * 2012-10-11 2014-05-01 Kyoraku Co Ltd Chamber of collision detection device for vehicle and method for manufacturing the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009048067B4 (en) * 2009-10-01 2019-08-29 Continental Automotive Gmbh Impact sensor with a tubular body
DE102011108627A1 (en) * 2011-07-27 2013-01-31 Continental Automotive Gmbh Impact sensor consisting of at least two deformable hollow bodies and at least one pressure sensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003236920A (en) * 2002-02-13 2003-08-26 Yazaki:Kk Insert part fusion-bonding molding method to blow molded object
JP2004003938A (en) * 2002-04-03 2004-01-08 Takata Corp Collision-detecting device and safety system
JP2005263207A (en) * 2004-03-17 2005-09-29 Kautex Textron Gmbh & Co Kg Impact energy absorption body
JP2007290682A (en) * 2006-03-29 2007-11-08 Denso Corp Collision detecting means

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001263313A (en) * 2000-03-22 2001-09-26 Honda Access Corp Mounting structure of resin molded product and method for molding resin wokded product
JP4626552B2 (en) * 2006-03-27 2011-02-09 株式会社デンソー Collision detection means

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003236920A (en) * 2002-02-13 2003-08-26 Yazaki:Kk Insert part fusion-bonding molding method to blow molded object
JP2004003938A (en) * 2002-04-03 2004-01-08 Takata Corp Collision-detecting device and safety system
JP2005263207A (en) * 2004-03-17 2005-09-29 Kautex Textron Gmbh & Co Kg Impact energy absorption body
JP2007290682A (en) * 2006-03-29 2007-11-08 Denso Corp Collision detecting means

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011125147A1 (en) * 2010-04-01 2011-10-13 トヨタ自動車株式会社 Vehicle internal/external structure
DE112010005436T5 (en) 2010-04-01 2013-04-04 Toyota Jidosha Kabushiki Kaisha Vehicle Interior-exterior structure
JP5459391B2 (en) * 2010-04-01 2014-04-02 トヨタ自動車株式会社 Vehicle interior / exterior structure
US8942891B2 (en) 2010-04-01 2015-01-27 Toyota Jidosha Kabushiki Kaisha Vehicle interior-exterior structure
WO2012108051A1 (en) * 2011-02-10 2012-08-16 トヨタ自動車株式会社 Collision detection device and occupant protection system
JP2014073753A (en) * 2012-10-04 2014-04-24 Denso Corp Collision detection device for vehicle
JP2014076623A (en) * 2012-10-11 2014-05-01 Kyoraku Co Ltd Chamber of collision detection device for vehicle and method for manufacturing the same

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