JP3740965B2

JP3740965B2 - Pinch detection device and switching device

Info

Publication number: JP3740965B2
Application number: JP2000263406A
Authority: JP
Inventors: 直史中谷; 弘之荻野; 浩二吉野; 彪長井; 成寿金澤; 雅彦伊藤; 優子藤井
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2000-08-31
Filing date: 2000-08-31
Publication date: 2006-02-01
Anticipated expiration: 2020-08-31
Also published as: JP2002070418A

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車等の車両のボディ開口部とスライドドアとの間への物体の挟み込みを検出する挟み込み検出装置および開閉装置に関するものである。
【０００２】
【従来の技術】
従来の挟み込み検出装置は、例えば特開平９−２６４０９４号公報や特開平１１−１８２１３６号公報に開示されているものがある。これは自動車のボディ開口部とスライドドアでの挟み込みを検出するために感圧部をスライドドアの閉方向の鉛直端部に配設したもので、感圧部として複数の長尺状の電極を対向させて配設した感圧スイッチを使用していた。そして、ボディ開口部とスライドドアとの間に物体が挟み込まれると、物体の接触による押圧により感圧スイッチの電極同士が接触して感圧スイッチがオンすることにより挟み込みを検出していた。
【０００３】
【発明が解決しようとする課題】
しかしながら、従来の挟み込み検出装置は、スライドドアとボディの開口部との間に物体を挟み込んだことを検知し、また、スライドドアについた窓開口部と開閉部の間に物体を挟み込んだことを検知するような２つの場所での挟み込みを検出するような挟み込み検出装置は付いてなかった。
【０００４】
本発明はこのような従来の課題を解決するものであり、スライドドアに付いているの窓にも挟み込み検出装置を効率良く取り付けることのできる挟み込み検出装置および開閉装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】
上記課題を解決するために本発明は、車両のスライドドアの形状に沿って屈曲可能に配設された第１の感圧部と、この第１の感圧部からの信号を受け取り前記自動車のボディ開口部と前記スライドドアとの間への物体の挟み込みを判定する第１の判定手段と、車両のスライドドアについた窓開口部と、この窓開口部を開閉する窓開閉部と、この窓開閉部と前記窓開口部の少なくとも一方に屈曲可能に配設された第２の感圧部と、この第２の感圧部からの信号を受け取り前記窓開口部と前記窓開閉部の間への物体の挟み込みを判定する第２の判定手段を備え、前記第１および第２のそれぞれの感圧部は変形に応じた出力信号を発生する可撓性を有した第１および第２の圧電センサを内包するのでスライドドアとボディ開口部で発生する物体の挟み込みと、スライドドアの窓開口部で発生する物体の挟み込みを検出できる。
【０００６】
【発明の実施の形態】
上記の課題を解決するために請求項１の発明は、車両のスライドドアの形状に沿って屈曲可能に配設された第１の感圧部と、この第１の感圧部からの信号を受け取り前記自動車のボディ開口部と前記スライドドアとの間への物体の挟み込みを判定する第１の判定手段と、車両のスライドドアについた窓開口部と、この窓開口部を開閉する窓開閉部と、この窓開閉部と前記窓開口部の少なくとも一方に屈曲可能に配設された第２の感圧部と、この第２の感圧部からの信号を受け取り前記窓開口部と前記窓開閉部の間への物体の挟み込みを判定する第２の判定手段を備え、前記第１および第２のそれぞれの感圧部は変形に応じた出力信号を発生する可撓性を有した第１および第２の圧電センサを内包することにより、スライドドアとボディ開口部で発生する物体の挟み込みと、スライドドアの窓開口部で発生する物体の挟み込みを検出できる。
【０００７】
そして、第１の圧電センサ及び第２の圧電センサは信号導出用の複数の電極を有し、前記第１の判定手段への接続端とは異なる側の前記第１の圧電センサの端部と前記第２の判定手段への接続端とは異なる側の前記第２の圧電センサの端部において前記信号導出用の同極の電極どうしを接続し、この第１および第２の圧電センサの接続部において前記第１および第２の圧電センサの断線あるいはショートを検出するための電気素子を有することにより、圧電センサの断線やショートなどの故障検出が容易にできる。
【０００８】
また請求項２の発明は、車両のスライドドアの形状に沿って屈曲可能に配設された第１の感圧部と、この第１の感圧部で検出した信号を受け取り前記自動車のボディ開口部と前記スライドドアとの間への物体の挟み込みを判定する第１の判定手段と、車両のスライドドアについた窓開口部と、この窓開口部を開閉する窓開閉部と、この窓開閉部と前記窓開口部の少なくとも一方に屈曲可能に配設された第２の感圧部と、この第２の感圧部で検出した信号を受け取り前記窓開口部と前記窓開閉部の間への物体の挟み込みを判定する第２の判定手段を備え、前記第１の感圧部及び第２の感圧部は変形に応じた信号を発生する可撓性を有した１本の共通の圧電センサを内包しており、前記第１および第２の判定手段は前記第１および第２の感圧部で検出した信号を受け取るためのそれぞれの入力部において前記圧電センサの断線あるいはショート検出用の電気素子を有したことにより、圧電センサの断線やショートなどの故障検出が容易にできる。
【０００９】
また請求項３の発明は、車両のスライドドアの形状に沿って屈曲可能に配設された第１の感圧部と、車両のスライドドアについた窓開口部と、この窓開口部を開閉する窓開閉部と、この窓開閉部と前記窓開口部の少なくとも一方に配設された第２の感圧部と、前記第１の感圧部及び第２の感圧部の出力信号に基づき前記自動車のボディ開口部と前記スライドドアとの間への物体の挟み込み及び前記窓開口部と前記窓開閉部の間への物体の挟み込みを判定する判定手段とを備え、前記第１の感圧部および第２の感圧部は変形に応じた信号を発生する可撓性を有した一本の共通の圧電センサを内包したことにより、判定手段が一つで済み、また、圧電センサを判定手段に接続するのは１カ所で良く、１本の圧電センサを有効に効率良く配設できる。
【００１０】
また請求項４の発明は、車両のスライドドアの形状に沿って屈曲可能に配設された第１の感圧部と、車両のスライドドアについた窓開口部と、この窓開口部を開閉する窓開閉部と、この窓開閉部と前記窓開口部の少なくとも一方に配設された第２の感圧部と、前記第１の感圧部の出力信号及び第２の感圧部からの２つの信号を受け取り前記自動車のボディ開口部と前記スライドドアとの間への物体の挟み込みまたは前記窓開口部と前記窓開閉部の間への物体の挟み込みを判定する判定手段とを備え、前記第１および第２のそれぞれの感圧部は変形に応じた出力信号を発生する可撓性を有した第１および第２の圧電センサを内包するので判定手段が一つで済み、また、２本の圧電センサを別々に配設できるので圧電センサの引き回しが簡単である。
【００１１】
また請求項５の発明は、判定手段からの挟み込み検出信号により閉動作中のスライドドアまたは窓開閉部を停止または開動作させる制御手段を有したので不要な挟み込みを防止することができる。
【００１２】
【実施例】
以下、本発明の一実施例について図を参照して説明する。
【００１３】
図１は実施例１の発明の挟み込み検出装置及び開閉装置の外観図で、自動車のスライドドアに適用した場合を示している。図２は図１のＡ−Ａ’線位置における断面構成図である。先ず、本発明の実施例１の挟み込み検出装置の構成は以下の通りである。図１及び図２より、１はスライドドア、４はスライドドア１の鉛直端部、６は感圧部、９はスライドドア１が開口して乗員が出入りするためのボディ開口部である。１０は感圧部６をスライドドア１に固定するための固定部、１１は自動車の側面側ボディ、１２はスライドドア１が閉止した際にボディ開口部９及びボディ１１とスライドドア１との間をシールするシール部である。感圧部６はスライドドア１が完全に閉止した際にボディ１１と接触しないようボディとの間に所定の距離をおいて固定部１０に固定されている。子供の指等の挟み込みを考慮するとこの距離は３ｍｍ〜５ｍｍとすることが好ましい。図１の２０はスライドドア１に付けられた窓開口部であり、２１は窓開口部２０を開閉する開閉部となる窓ガラスである。２６は窓開口部上部枠に取り付けられた感圧部である。
【００１４】
図３は感圧部６および２６の構成図である。図３より、感圧部６および２６はゴム弾性体１６の中に圧電センサー７を内包している。圧電センサー７は、圧電材としての複合圧電体層１３と、複合圧電体層１３を挟む電極としての中心電極１４及び外側電極１５とを同心円状に積層して成形した同軸ケーブル状の構成を備えており、全体として可撓性に優れた構成を有している。１９はゴム弾性体１６を図２における固定部１０と勘合させて固定するための勘合溝である。
【００１５】
図４はスライドドア１を車内側から見た図で、感圧部６および２６と圧電センサー７および２７の配設状態を示したものである。図４において３１はスライドドア１の鉛直端部４に取り付けられた圧電センサ７の信号を受け取り挟み込みを検出するための第１の判定手段である。３２は第１の判定手段３１の出力信号に基づき第１の駆動手段３３を制御する第１の制御手段である。第１の駆動手段３３はスライドドア１を電動で開閉させるためのモータとベルトあるいはギヤなどによる動力伝達機構からなっている。３７は第１の判定手段３１の判定出力信号を第１の制御手段３２に接続するためのコネクタである。３４はスライドドア１の窓開口部２０に取り付けられた圧電センサ２７の信号を受け取り挟み込みを検出するための第２の判定手段である。３５は第２の判定手段３４の出力信号に基づき第２の駆動手段３６を制御する第２の制御手段である。第２の駆動手段３３は窓ガラス２１を電動で開閉させるためのモータとワイヤあるいはギヤなどによる動力伝達機構からなっている。３８は第２の判定手段３４の判定出力信号を第２の制御手段３５に接続するためのコネクタである。
【００１６】
図５は本発明第１の実施例の第１および第２の判定手段の回路構成図である。図５より、４４（５４）は電気素子として抵抗体を用いている。４６は断線またはショート検出用の第２の抵抗体、４１は第１の圧電センサ７または第２の圧電センサ２７からの出力信号から所定の周波数成分のみを通過させる濾波部、４２は濾波部４１からの出力信号に基づき挟み込みを判定する判定部、４３は抵抗体４４（５４）と第２の抵抗体４１により形成される電圧値から第１の圧電センサ７または第２の圧電センサ２７の断線またはショート異常を判定する異常判定部、４７は自動車のバッテリー等からなる電源である。濾波部４１は第１の圧電センサ７または第２の圧電センサ２７の出力信号から自動車の車体の振動等に起因する不要な信号を除去し、物体の挟み込みに特有な周波数成分を有した信号を抽出するような濾波特性を有する。濾波特性の決定には自動車の車体の振動特性等を考慮して最適化すればよい。具体的には、自動車のエンジンや走行による振動を除去するため約１０Ｈｚ以下の信号成分を抽出するローパスフィルタとすることが望ましい。
【００１７】
次に作用について説明する。図１に示したように、本実施例１ではスライドドア１とボディ開口部９との間への物体の挟み込みを検出するために、可撓性の圧電センサ７をスライドドア１の形状に沿って屈曲可能に配設することができる。可撓性の圧電センサ７を使用しているため、スライドドア１に湾曲部があっても従来のように湾曲部で感圧スイッチが接触して誤検出が生じてしまうといっさたことがない。また、スライドドア１にドアロック機構や開閉検出用電極等の付属部品が設置されていても、圧電センサ７を屈曲させてこれらの付属部品を避けて配設することができる。従って付属部品の設置位置にも制約が無い。
【００１８】
また、圧電センサの最小曲率が半径５ｍｍであることから、最小曲率半径５ｍｍまでのスライドドア１の鉛直端部４が湾曲していたとしても、この湾曲部に対して配設可能となる。従って、スライドドア１の剛性の強化やデザイン面での自由度が向上する。
【００１９】
次に挟み込みの判定手順について以下に説明する。スライドドア１とボディ開口部９との間に物体が挟み込まれると物体が圧電センサ７と接触し、物体の押圧により圧電センサ７が変形する。図６はこの際の濾波部４１の出力信号Ｖ、挟み込み判定部４２の判定出力Ｊ、駆動手段３３への印加電圧Ｖｍを示す特性図である。図６において、縦軸は上から順にＶ、Ｊ、Ｖｍ、横軸は時刻ｔである。時刻ｔ１で駆動手段３３のモータに＋Ｖｄの電圧を印加してスライドドア１を閉止方向に駆動させる。挟み込みが起こると圧電センサ７からは圧電効果により圧電センサ７の変形の加速度に応じた信号（図６の基準電位Ｖ０より大きな信号成分）が出力される。判定部４２はＶのＶ０からの振幅Ｖ−Ｖ０がＤ０以上ならば挟み込みが生じたと判定し、時刻ｔ０で判定出力としてＬｏ→Ｈｉ→Ｌｏのバルス信号を出力する。制御手段３２ではこのパルス信号があると駆動手段３３への＋Ｖｄの電圧印加を停止した後、−Ｖｄの電圧を一定時間印加してスライドドア１を開方向へ駆動させ、挟み込みを解除する。挟み込みが判定されると警報を発生する構成としてもよい。尚、挟み込みを解除する際、圧電センサ７からは変形が復元する加速度に応じた信号（図６の基準電位Ｖ０より小さな信号成分）が出力される。
【００２０】
尚、挟み込みの際、ＶがＶ０より大となるか小となるかは、圧電センサ７の屈曲方向や分極方向、電極の割付け（どちらを基準電位とするか）、圧電センサ７の支持方向により変わるため、判定部４２でＶのＶ０からの振幅｜Ｖ−Ｖ０｜に基づき挟み込みを判定する構成としてもよく、ＶのＶ０に対する大小によらず挟み込みを判定することができる。
【００２１】
窓開口部２０と窓ガラス２１の間に生じる物体の挟み込みの場合も同様の動作である。
【００２２】
次に、異常判定部４３での断線判定の手順を以下に示す。図５において、抵抗体４６と抵抗体４４（５４）の抵抗値をそれぞれＲ１、Ｒ２とし、Ｐ点の電圧をＶｐ、電源４７の電圧をＶｓとする。Ｒ１、Ｒ２は通常数メグオーム〜数十メグオームの抵抗値が用いられる。圧電センサ７または２７の電極が正常の場合、ＶｐはＶｓに対して、Ｒ１とＲ２との分圧値となる。ここで、複合圧電体層１３の抵抗値は通常数百メグオーム以上であるのでＲ１とＲ２の抵抗値にはほとんど寄与しないため上記分圧値の算出には無視するものとする。圧電センサ７または２７の電極が断線すると等価的にはＰａ点またはＰｂ点がオープンとなるので、ＶｐはＲ１で電源４７の正電極に接続されているためＶｓとなる。電極がショートすると等価的にはＰａ点とＰｂ点がショートすることになるので、Ｖｐはほぼ０ボルトに等しくなる。このように異常判定部４３でＶｐの値に基づいて圧電センサ７または２７の電極の断線やショートといった異常を検出するので、信頼性を向上することができる。尚、抵抗体４４（５４）は他に電気素子としてコンデンサやインダクタあるいはこれら電気素子の複合体であっても良い。特に電源４７を交流あるいは高周波電源とした場合には抵抗体４４（５４）の代わりにインダクタを使うことも可能である。
【００２３】
また、第１の圧電センサ７の先端に付く抵抗体４４と第２の圧電センサ２７の先端に付く抵抗体５４は共通にでき、図７に示すように抵抗体５１で第１の圧電センサ７と第２の圧電センサ２７のための断線またはショート検出用の抵抗体とすることもできる。
【００２４】
また、第１の圧電センサ７と第２の圧電センサ２７を別々の圧電センサで構成するのではなく、図８に示すように１本の圧電センサ５５を延ばして窓開口部２０とスライドドア鉛直端部４に配設することもできる。この場合、一方の判定手段は図５に示す構成で良いが、他方の判定手段は図９に示すように抵抗値Ｒ３を持つ抵抗体５６をＰ点とＰｂ点間に接続する。このとき、圧電センサ５５の電極が正常ならば、ＶｐはＶｓに対して、一方の判定手段３１（３４）である図５のＲ１と他方の判定手段３４（３１）である図９のＲ３との分圧値になる。圧電センサ５５の電極が断線すると等価的にはＰａ点またはＰｂ点がオープンとなるので、一方の判定手段３１（３４）のＶｐはＲ１で電源４７の正電極に接続されているためＶｓとなり、他方の判定手段３４（３１）のＶｐは、Ｒ３で電源４７の負電極に接続されているため、ほぼ０ボルトに等しくなる。電極がショートすると等価的にはＰａ点とＰｂ点がショートすることになるので、どちらの判定手段３１（３４）のＶｐもほぼ０ボルトに等しくなる。
【００２５】
また、図１０に示すように１つの判定手段６２で窓開口部２０とスライドドア１の鉛直端部４に配設された圧電センサ５５の信号を受け取るようにしても良い。６６は断線、ショートの異常検知のための抵抗体である。この場合、１本の共通の圧電センサと、１つの判定手段により、圧電センサを判定手段に接続するのは１カ所で良く、１本の圧電センサを有効に効率良く配設できる。
【００２６】
また、図１１に示すようにスライドドア１の鉛直端部４に配設された圧電センサ７と窓開口部２０に配設された圧電センサ２７の２つの信号を１つの判定手段６４で受け取るようにしても良い。この場合、判定手段が一つで済み、また、２本の圧電センサを別々に配設できるので圧電センサの引き回しが簡単である。
【００２７】
上記した作用により、可撓性の圧電センサを車両のスライドドアの形状に沿って屈曲可能に配設され、さらにスライドドアの窓にも同様の可撓性の圧電センサが配設されているので、スライドドアどボディ開口部との間の物体の挟み込みと、スライドドアの窓開口部と窓ガラスとの間での物体の挟み込みを検出できる。
【００２８】
また、圧電センサが信号導出用の複数の電極と、前記電極間に接続された断線検出用の抵抗体とを有しており、断線検出用の抵抗体により圧電センサの電極の断線を検出できるので、装置の信頼性が向上する。
【００２９】
また、１本の共通の圧電センサでもスライドドアどボディ開口部との間の物体の挟み込みと、スライドドアの窓開口部と窓ガラスとの間での物体の挟み込みを検出できるとともに、圧電センサの断線あるいはショート検出用の電気素子を有したことにより、圧電センサの断線やショートなどの故障検出が容易にできる。
【００３０】
また、１本の共通の圧電センサと、１つの判定手段にすると、圧電センサを判定手段に接続するのは１カ所で良く、１本の圧電センサを有効に効率良く配設できる。
【００３１】
また、第１の圧電センサの出力信号及び第２の圧電センサの出力信号の２つを１つの判定手段で受け取とれば、自動車のボディ開口部と前記スライドドアとの間への物体の挟み込みまたは前記窓開口部と前記窓開閉部の間への物体の挟み込みの判定ができ、判定手段が一つで済み、また、２本の圧電センサを別々に配設できるので圧電センサの引き回しが簡単である。
【００３２】
さらに、圧電センサによる挟み込み検出装置とスライドドアを駆動する駆動手段とを備え、判定手段の出力信号に基づき挟み込み判定時には挟み込みを解除するよう前記駆動手段を制御する制御手段を有しており、挟み込み判定時には挟み込みを解除するので、不要な挟み込みを防止する開閉装置を提供することができる。
【００３３】
【発明の効果】
上記実施例から明らかなように、請求項１の発明によれば、車両のスライドドアの形状に沿って屈曲可能に配設された第１の感圧部と、この第１の感圧部からの信号を受け取り前記自動車のボディ開口部と前記スライドドアとの間への物体の挟み込みを判定する第１の判定手段と、車両のスライドドアについた窓開口部と、この窓開口部を開閉する窓開閉部と、この窓開閉部と前記窓開口部の少なくとも一方に屈曲可能に配設された第２の感圧部と、この第２の感圧部からの信号を受け取り前記窓開口部と前記窓開閉部の間への物体の挟み込みを判定する第２の判定手段を備え、前記第１および第２のそれぞれの感圧部は変形に応じた出力信号を発生する可撓性を有した第１および第２の圧電センサを内包するのでスライドドアとボディ開口部で発生する物体の挟み込みと、スライドドアの窓開口部で発生する物体の挟み込みを検出できるといった効果がある。
【００３４】
そして、第１の圧電センサ及び第２の圧電センサは信号導出用の複数の電極を有し、前記第１の判定手段への接続端とは異なる側の前記第１の圧電センサの端部と前記第２の判定手段への接続端とは異なる側の前記第２の圧電センサの端部において前記信号導出用の同極の電極どうしを接続し、この第１および第２の圧電センサの接続部において前記第１および第２の圧電センサの断線あるいはショートを検出するための電気素子を有したことにより、圧電センサの断線やショートなどの故障検出が容易にできるといった効果がある。
【００３５】
また請求項２の発明によれば、車両のスライドドアの形状に沿って屈曲可能に配設された第１の感圧部と、この第１の感圧部で検出した信号を受け取り前記自動車のボディ開口部と前記スライドドアとの間への物体の挟み込みを判定する第１の判定手段と、車両のスライドドアについた窓開口部と、この窓開口部を開閉する窓開閉部と、この窓開閉部と前記窓開口部の少なくとも一方に屈曲可能に配設された第２の感圧部と、この第２の感圧部で検出した信号を受け取り前記窓開口部と前記窓開閉部の間への物体の挟み込みを判定する第２の判定手段を備え、前記第１の感圧部及び第２の感圧部は変形に応じた信号を発生する可撓性を有した１本の共通の圧電センサを内包しており、前記第１および第２の判定手段は前記第１および第２の感圧部で検出した信号を受け取るためのそれぞれの入力部において前記圧電センサの断線あるいはショート検出用の電気素子を有したことにより圧電センサの断線やショートなどの故障検出が容易にできるといった効果がある。
【００３６】
また請求項３の発明によれば、車両のスライドドアの形状に沿って屈曲可能に配設された第１の感圧部と、車両のスライドドアについた窓開口部と、この窓開口部を開閉する窓開閉部と、この窓開閉部と前記窓開口部の少なくとも一方に配設された第２の感圧部と、前記第１の感圧部及び第２の感圧部の出力信号に基づき前記自動車のボディ開口部と前記スライドドアとの間への物体の挟み込み及び前記窓開口部と前記窓開閉部の間への物体の挟み込みを判定する判定手段とを備え、前記第１の感圧部および第２の感圧部は変形に応じた信号を発生する可撓性を有した一本の共通の圧電センサを内包するので、判定手段が一つで済み、また、圧電センサを判定手段に接続するのは１カ所で良く、１本の圧電センサを有効に効率良く配設できるといった効果がある。
【００３７】
また請求項４発明によれば、車両のスライドドアの形状に沿って屈曲可能に配設された第１の感圧部と、車両のスライドドアについた窓開口部と、この窓開口部を開閉する窓開閉部と、この窓開閉部と前記窓開口部の少なくとも一方に配設された第２の感圧部と、前記第１の感圧部の出力信号及び第２の感圧部からの２つの信号を受け取り前記自動車のボディ開口部と前記スライドドアとの間への物体の挟み込みまたは前記窓開口部と前記窓開閉部の間への物体の挟み込みを判定する判定手段とを備え、前記第１および第２のそれぞれの感圧部は変形に応じた出力信号を発生する可撓性を有した第１および第２の圧電センサを内包するので、判定手段が一つで済み、また、２本の圧電センサを別々に配設できるので圧電センサの引き回しが簡単であるといった効果がある。
【００３８】
また請求項５発明によれば、判定手段からの挟み込み検出信号により閉動作中のスライドドアまたは窓開閉部を停止または開動作させる制御手段を有したもので、挟み込み判定時には挟み込みを解除するので不要な挟み込みを防止することができるといった効果がある。
【図面の簡単な説明】
【図１】本発明の一実施例の発明の挟み込み検出装置及び開閉装置の外観図
【図２】図１のＡ−Ａ′線位置における断面構成図
【図３】同装置の感圧部の構成図
【図４】同装置の挟み込み検出装置の配設構成図
【図５】同装置の挟み込み検出装置の判定手段の回路構成図
【図６】同装置の濾波部からの出力信号Ｖ、挟み込み判定部の判定出力Ｊ、モータへの印加電圧Ｖｍを示す特性図
【図７】同装置の挟み込み検出装置の２本の圧電センサを直列接続したときの配設構成図
【図８】同装置の挟み込み検出装置の１本の圧電センサのみで配設したときの配設構成図
【図９】同装置の挟み込み検出装置の判定手段の第２の回路構成図
【図１０】同装置の挟み込み検出装置の１本の圧電センサのみで配設し１つの判定手段で受ける場合の配設構成図
【図１１】同装置の挟み込み検出装置の２本の圧電センサの信号を１つの判定手段で受ける場合の配設構成図
【符号の説明】
１スライドドア
４鉛直端部
６、２６圧電センサ内蔵のゴム弾性体
７、２７、５５圧電センサ
９ボディ開口部
１１ボディ
１３複合圧電体層
１４中心電極（電極）
１５外側電極（電極）
１６ゴム弾性体
１９勘合溝
３１、３４、６２、６４判定手段
４４、４６、５１、５４、５６、６６抵抗体（電気素子）
３３、３６駆動手段
３２、３５制御手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pinching detection device and an opening / closing device that detect pinching of an object between a body opening of a vehicle such as an automobile and a slide door.
[0002]
[Prior art]
Conventional pinch detection devices include those disclosed in, for example, Japanese Patent Laid-Open Nos. 9-264094 and 11-182136. This is a pressure-sensitive part arranged at the vertical end in the closing direction of the sliding door to detect pinching between the body opening of the automobile and the sliding door. A plurality of elongated electrodes are used as the pressure-sensitive part. A pressure-sensitive switch arranged in opposition was used. When an object is sandwiched between the body opening and the sliding door, the electrodes of the pressure-sensitive switch come into contact with each other by pressing due to the contact of the object and the pressure-sensitive switch is turned on to detect the sandwiching.
[0003]
[Problems to be solved by the invention]
However, the conventional pinch detection device detects that an object has been pinched between the sliding door and the opening of the body, and has also detected that an object has been pinched between the window opening and the opening / closing part of the sliding door. There was no pinching detection device for detecting pinching at two places to be detected.
[0004]
This invention solves such a conventional subject, and it aims at providing the pinching detection apparatus and opening / closing apparatus which can attach a pinching detection apparatus efficiently also to the window of the sliding door. .
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a first pressure-sensitive portion that is arranged so as to be bendable along the shape of a sliding door of a vehicle, and a signal received from the first pressure-sensitive portion. First determination means for determining whether an object is sandwiched between a body opening and the sliding door, a window opening on a sliding door of a vehicle, a window opening / closing portion for opening / closing the window opening, and the window A second pressure-sensitive part that is bendably disposed in at least one of the opening / closing part and the window opening part, and receives a signal from the second pressure-sensitive part, between the window opening part and the window opening / closing part. Second judging means for judging whether the object is sandwiched, and each of the first and second pressure-sensitive parts has flexibility to generate an output signal corresponding to deformation. Since the sensor is included, the object between the sliding door and the body opening And write, can detect the pinching of an object generated by the window opening of the sliding door.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
In order to solve the above-described problems, the invention of claim 1 is directed to a first pressure-sensitive portion disposed so as to be bendable along the shape of a sliding door of a vehicle, and a signal from the first pressure-sensitive portion. First determining means for determining whether an object is sandwiched between the body opening of the automobile and the sliding door, a window opening on the sliding door of the vehicle, and a window opening / closing portion that opens and closes the window opening A second pressure-sensitive portion that is bendably disposed on at least one of the window opening / closing portion and the window opening portion, and receives the signal from the second pressure-sensitive portion, and the window opening portion and the window opening / closing portion. Second judging means for judging whether the object is sandwiched between the first and second pressure-sensitive parts, and each of the first and second pressure-sensitive parts has flexibility to generate an output signal according to deformation. By including the second piezoelectric sensor, the sliding door and the body opening And pinching of an object to be generated, it can detect pinching of an object generated by the window opening of the sliding door.
[0007]
Then, the first piezoelectric sensor and the second piezoelectric sensor has a plurality of electrodes for signal derivation, the connection end to the first determination means and the end portion of the first piezoelectric sensor side different The same-polarity electrode for signal derivation is connected at the end of the second piezoelectric sensor on the side different from the connection end to the second determination means, and the first and second piezoelectric sensors are connected. By including an electric element for detecting disconnection or short-circuit of the first and second piezoelectric sensors in the part, failure detection such as disconnection or short-circuit of the piezoelectric sensor can be easily performed.
[0008]
According to a second aspect of the present invention, there is provided a first pressure-sensitive portion disposed so as to be able to bend along the shape of a sliding door of a vehicle, and a signal detected by the first pressure-sensitive portion. A first determination unit that determines whether an object is sandwiched between a sliding door and the sliding door, a window opening on the sliding door of the vehicle, a window opening / closing portion that opens and closes the window opening, and the window opening / closing portion And a second pressure-sensitive part that is bendably disposed in at least one of the window openings, and a signal detected by the second pressure-sensitive part is received between the window opening and the window opening / closing part. One common piezoelectric sensor having flexibility for generating a signal corresponding to deformation, wherein the first pressure-sensitive part and the second pressure-sensitive part are provided with a second determination means for determining whether the object is caught. And the first and second determination means are the first and second pressure sensitive parts. By having the electrical element for disconnection or short circuit detection of the piezoelectric sensor in the respective inputs for receiving the out signal it can be easily fault detection such as disconnection or short circuit of the piezoelectric sensor.
[0009]
According to a third aspect of the present invention, a first pressure-sensitive portion disposed so as to be bent along the shape of the sliding door of the vehicle, a window opening portion attached to the sliding door of the vehicle, and opening and closing the window opening portion. Based on the output signal of the window opening / closing part, the second pressure sensing part disposed in at least one of the window opening / closing part and the window opening part, and the first pressure sensing part and the second pressure sensing part A first pressure sensing unit comprising: a determination unit that determines whether an object is sandwiched between a body opening of the automobile and the sliding door and whether an object is sandwiched between the window opening and the window opening / closing unit; The second pressure-sensitive part includes a single flexible piezoelectric sensor that generates a signal corresponding to deformation, so that only one determination means is required, and the piezoelectric sensor is determined as a determination means. It is only necessary to connect to a single point, and one piezoelectric sensor can be arranged effectively and efficiently.
[0010]
According to a fourth aspect of the present invention, a first pressure-sensitive portion disposed so as to be bent along the shape of the sliding door of the vehicle, a window opening portion attached to the sliding door of the vehicle, and opening and closing the window opening portion. A window opening / closing section, a second pressure sensing section disposed in at least one of the window opening / closing section and the window opening section, an output signal of the first pressure sensing section, and 2 from the second pressure sensing section. Determination means for receiving two signals and determining whether the object is sandwiched between the body opening of the automobile and the sliding door or whether the object is sandwiched between the window opening and the window opening / closing part, Since each of the first and second pressure sensitive parts includes flexible first and second piezoelectric sensors that generate output signals according to deformation, only one determination means is required. The piezoelectric sensors can be arranged separately so that the piezoelectric sensors can be easily routed. .
[0011]
Further, the invention according to claim 5 includes the control means for stopping or opening the sliding door or the window opening / closing section during the closing operation by the pinching detection signal from the determination means, so that unnecessary pinching can be prevented.
[0012]
【Example】
An embodiment of the present invention will be described below with reference to the drawings.
[0013]
FIG. 1 is an external view of a pinch detection device and an opening / closing device according to the first embodiment, and shows a case where the device is applied to a sliding door of an automobile. FIG. 2 is a cross-sectional configuration diagram taken along the line AA ′ in FIG. First, the structure of the pinching detection apparatus according to the first embodiment of the present invention is as follows. 1 and 2, 1 is a sliding door, 4 is a vertical end portion of the sliding door 1, 6 is a pressure-sensitive portion, and 9 is a body opening for the passenger to enter and exit when the sliding door 1 opens. Reference numeral 10 denotes a fixing part for fixing the pressure-sensitive part 6 to the slide door 1, 11 denotes a side body of the automobile, and 12 denotes between the body opening 9 and the body 11 and the slide door 1 when the slide door 1 is closed. It is the seal part which seals. The pressure-sensitive part 6 is fixed to the fixing part 10 at a predetermined distance from the body so that the pressure-sensitive part 6 does not come into contact with the body 11 when the slide door 1 is completely closed. This distance is preferably 3 mm to 5 mm in consideration of pinching of a child's finger or the like. Reference numeral 20 in FIG. 1 denotes a window opening attached to the slide door 1, and reference numeral 21 denotes a window glass serving as an opening / closing part that opens and closes the window opening 20. Reference numeral 26 denotes a pressure-sensitive portion attached to the window opening upper frame.
[0014]
FIG. 3 is a configuration diagram of the pressure sensitive units 6 and 26. As shown in FIG. 3, the pressure sensitive parts 6 and 26 include the piezoelectric sensor 7 in the rubber elastic body 16. The piezoelectric sensor 7 has a coaxial cable-like configuration formed by concentrically laminating a composite piezoelectric layer 13 as a piezoelectric material and a center electrode 14 and an outer electrode 15 as electrodes sandwiching the composite piezoelectric layer 13. The overall structure is excellent in flexibility. Reference numeral 19 denotes a fitting groove for fitting and fixing the rubber elastic body 16 with the fixing portion 10 in FIG.
[0015]
FIG. 4 is a view of the sliding door 1 as seen from the inside of the vehicle, and shows the arrangement of the pressure sensitive parts 6 and 26 and the piezoelectric sensors 7 and 27. In FIG. 4, reference numeral 31 denotes first determination means for receiving a signal from the piezoelectric sensor 7 attached to the vertical end 4 of the slide door 1 and detecting pinching. Reference numeral 32 denotes first control means for controlling the first drive means 33 based on the output signal of the first determination means 31. The first drive means 33 is composed of a motor for opening and closing the slide door 1 electrically and a power transmission mechanism such as a belt or a gear. Reference numeral 37 denotes a connector for connecting the determination output signal of the first determination means 31 to the first control means 32. Reference numeral 34 denotes second determination means for receiving a signal from the piezoelectric sensor 27 attached to the window opening 20 of the slide door 1 and detecting pinching. Reference numeral 35 denotes second control means for controlling the second driving means 36 based on the output signal of the second determination means 34. The second driving means 33 is composed of a motor for opening and closing the window glass 21 electrically and a power transmission mechanism using a wire or a gear. Reference numeral 38 denotes a connector for connecting the determination output signal of the second determination means 34 to the second control means 35.
[0016]
FIG. 5 is a circuit diagram of the first and second determination means of the first embodiment of the present invention. From FIG. 5, 44 (54) uses a resistor as an electric element. 46 is a second resistor for detecting disconnection or short circuit, 41 is a filtering unit for allowing only a predetermined frequency component to pass from an output signal from the first piezoelectric sensor 7 or the second piezoelectric sensor 27, and 42 is a filtering unit 41. The determination unit 43 for determining the pinching based on the output signal from the first piezoelectric sensor 7 or the second piezoelectric sensor 27 is disconnected from the voltage value formed by the resistor 44 (54) and the second resistor 41. Alternatively, an abnormality determination unit 47 for determining a short circuit abnormality is a power source including a battery of an automobile. The filtering unit 41 removes unnecessary signals caused by vibrations of the vehicle body of the automobile from the output signals of the first piezoelectric sensor 7 or the second piezoelectric sensor 27, and outputs a signal having a frequency component peculiar to object pinching. It has filtering characteristics such as extraction. The determination of the filtering characteristics may be optimized in consideration of the vibration characteristics of the automobile body. Specifically, it is desirable to use a low-pass filter that extracts a signal component of about 10 Hz or less in order to remove vibrations caused by an automobile engine or running.
[0017]
Next, the operation will be described. As shown in FIG. 1, in the first embodiment, a flexible piezoelectric sensor 7 is arranged along the shape of the slide door 1 in order to detect the object being caught between the slide door 1 and the body opening 9. And bendable. Since the flexible piezoelectric sensor 7 is used, even if the sliding door 1 has a curved portion, the pressure-sensitive switch comes into contact with the curved portion as in the conventional case and erroneous detection occurs. Absent. Further, even if the slide door 1 is provided with accessory parts such as a door lock mechanism and an opening / closing detection electrode, the piezoelectric sensor 7 can be bent and arranged so as to avoid these accessory parts. Therefore, there are no restrictions on the installation positions of the accessory parts.
[0018]
Further, since the minimum curvature of the piezoelectric sensor is 5 mm, even if the vertical end 4 of the slide door 1 up to the minimum curvature radius of 5 mm is curved, it can be disposed on the curved portion. Therefore, the rigidity of the slide door 1 is enhanced and the degree of freedom in design is improved.
[0019]
Next, the pinching determination procedure will be described below. When an object is sandwiched between the slide door 1 and the body opening 9, the object comes into contact with the piezoelectric sensor 7, and the piezoelectric sensor 7 is deformed by the pressing of the object. FIG. 6 is a characteristic diagram showing the output signal V of the filtering unit 41, the determination output J of the pinching determination unit 42, and the applied voltage Vm to the driving means 33 at this time. In FIG. 6, the vertical axis represents V, J, Vm in order from the top, and the horizontal axis represents time t. At time t1, a voltage of + Vd is applied to the motor of the driving means 33 to drive the sliding door 1 in the closing direction. When pinching occurs, the piezoelectric sensor 7 outputs a signal (a signal component larger than the reference potential V0 in FIG. 6) according to the deformation acceleration of the piezoelectric sensor 7 due to the piezoelectric effect. If the amplitude V-V0 of V from V0 is equal to or greater than D0, the determination unit 42 determines that the jamming has occurred, and outputs a Lo → Hi → Lo pulse signal as a determination output at time t0. When this pulse signal is received, the control means 32 stops applying + Vd voltage to the drive means 33, and then applies -Vd voltage for a certain period of time to drive the sliding door 1 in the opening direction to release the pinching. An alarm may be generated when pinching is determined. When releasing the pinching, the piezoelectric sensor 7 outputs a signal corresponding to the acceleration at which the deformation is restored (a signal component smaller than the reference potential V0 in FIG. 6).
[0020]
Note that, when sandwiching, whether V is larger or smaller than V0 depends on the bending direction and polarization direction of the piezoelectric sensor 7, the electrode allocation (which is used as a reference potential), and the supporting direction of the piezoelectric sensor 7. Therefore, the determination unit 42 may be configured to determine the pinching based on the amplitude | V−V0 | of V from V0, and the pinching can be determined regardless of the magnitude of V with respect to V0.
[0021]
The same operation is performed in the case of sandwiching an object generated between the window opening 20 and the window glass 21.
[0022]
Next, the procedure of disconnection determination in the abnormality determination unit 43 is shown below. In FIG. 5, the resistance values of the resistor 46 and the resistor 44 (54) are R1 and R2, respectively, the voltage at the point P is Vp, and the voltage of the power supply 47 is Vs. R1 and R2 usually have resistance values of several megohms to several tens of megohms. When the electrodes of the piezoelectric sensor 7 or 27 are normal, Vp is a partial pressure value of R1 and R2 with respect to Vs. Here, since the resistance value of the composite piezoelectric layer 13 is usually several hundred megohms or more, it hardly contributes to the resistance values of R1 and R2, and is ignored in the calculation of the partial pressure value. When the electrode of the piezoelectric sensor 7 or 27 is disconnected, the Pa point or the Pb point is equivalently opened, so that Vp becomes Vs because it is connected to the positive electrode of the power supply 47 at R1. When the electrode is short-circuited, the Pa point and the Pb point are equivalently short-circuited, so that Vp is substantially equal to 0 volts. As described above, the abnormality determination unit 43 detects an abnormality such as disconnection or short-circuit of the electrodes of the piezoelectric sensor 7 or 27 based on the value of Vp, so that the reliability can be improved. In addition, the resistor 44 (54) may be a capacitor, an inductor, or a composite of these electric elements as other electric elements. In particular, when the power source 47 is an AC or high frequency power source, an inductor can be used instead of the resistor 44 (54).
[0023]
Further, the resistor 44 attached to the tip of the first piezoelectric sensor 7 and the resistor 54 attached to the tip of the second piezoelectric sensor 27 can be made common, and the resistor 51 is used as the first piezoelectric sensor 7 as shown in FIG. In addition, a disconnection or short-circuit detection resistor for the second piezoelectric sensor 27 may be used.
[0024]
Further, the first piezoelectric sensor 7 and the second piezoelectric sensor 27 are not constituted by separate piezoelectric sensors, but one piezoelectric sensor 55 is extended as shown in FIG. 8 to extend the window opening 20 and the sliding door vertically. It can also be arranged at the end 4. In this case, one determination means may have the configuration shown in FIG. 5, but the other determination means connects a resistor 56 having a resistance value R3 between points P and Pb as shown in FIG. At this time, if the electrode of the piezoelectric sensor 55 is normal, Vp is R1 in FIG. 5 as one determination means 31 (34) and R3 in FIG. 9 as the other determination means 34 (31) with respect to Vs. The partial pressure value becomes. When the electrode of the piezoelectric sensor 55 is disconnected, the Pa point or the Pb point is equivalently opened. Therefore, the Vp of one determination means 31 (34) is Vs because it is connected to the positive electrode of the power supply 47 at R1, Since Vp of the other determination means 34 (31) is connected to the negative electrode of the power supply 47 by R3, it becomes substantially equal to 0 volts. When the electrode is short-circuited, the Pa point and the Pb point are equivalently short-circuited, so that Vp of either determination means 31 (34) is substantially equal to 0 volts.
[0025]
In addition, as shown in FIG. 10, the signal of the piezoelectric sensor 55 disposed at the window opening 20 and the vertical end 4 of the slide door 1 may be received by one determination means 62. Reference numeral 66 denotes a resistor for detecting an abnormality of disconnection or short circuit. In this case, the piezoelectric sensor may be connected to the determination means by one common piezoelectric sensor and one determination means, and one piezoelectric sensor can be effectively and efficiently disposed.
[0026]
In addition, as shown in FIG. 11, two determination signals 64 are received by one determination means 64, that is, the piezoelectric sensor 7 disposed at the vertical end 4 of the slide door 1 and the piezoelectric sensor 27 disposed at the window opening 20. Anyway. In this case, only one determination means is required, and the two piezoelectric sensors can be arranged separately, so that the piezoelectric sensor can be easily routed.
[0027]
Due to the above-described action, the flexible piezoelectric sensor is arranged to be bent along the shape of the sliding door of the vehicle, and the same flexible piezoelectric sensor is also arranged in the window of the sliding door. Further, it is possible to detect the object sandwiched between the slide door and the body opening and the object sandwiched between the window opening of the slide door and the window glass.
[0028]
Further, the piezoelectric sensor has a plurality of electrodes for signal derivation and a disconnection detection resistor connected between the electrodes, and the disconnection of the electrode of the piezoelectric sensor can be detected by the disconnection detection resistor. Therefore, the reliability of the device is improved.
[0029]
In addition, even with one common piezoelectric sensor, it is possible to detect the object pinching between the sliding door and the body opening and the object pinching between the sliding door window opening and the window glass. By having an electrical element for detecting a disconnection or a short circuit, it is possible to easily detect a failure such as a disconnection or a short circuit of the piezoelectric sensor.
[0030]
Further, if one common piezoelectric sensor and one determination unit are used, the piezoelectric sensor may be connected to the determination unit at one place, and one piezoelectric sensor can be effectively and efficiently disposed.
[0031]
Further, if two output signals of the first piezoelectric sensor and the second piezoelectric sensor are received by one determination means, the object is sandwiched between the body opening of the automobile and the sliding door or It is possible to determine whether an object is caught between the window opening and the window opening / closing part, and only one determination unit is required, and two piezoelectric sensors can be provided separately, so that the piezoelectric sensor can be easily routed. is there.
[0032]
Further, the apparatus includes a pinch detection device using a piezoelectric sensor and a driving unit that drives the sliding door, and includes a control unit that controls the driving unit so as to release the pinching when pinching is determined based on an output signal of the determination unit. Since the pinching is released at the time of determination, an opening / closing device that prevents unnecessary pinching can be provided.
[0033]
【The invention's effect】
As is apparent from the above embodiment, according to the first aspect of the present invention, a first pressure-sensitive portion disposed so as to be able to bend along the shape of the sliding door of the vehicle, and the first pressure-sensitive portion. A first determination means for determining whether the object is caught between the body opening of the automobile and the sliding door, a window opening on the sliding door of the vehicle, and opening / closing the window opening A window opening / closing part, a second pressure sensing part bendably disposed in at least one of the window opening / closing part and the window opening part, and a signal received from the second pressure sensing part; Second determination means for determining whether the object is sandwiched between the window opening and closing portions, each of the first and second pressure sensitive portions has flexibility to generate an output signal corresponding to deformation. Since the first and second piezoelectric sensors are included, the sliding door and the body opening In the pinching of an object to be generated, there is an effect that can detect pinching of an object generated by the window opening of the sliding door.
[0034]
Then, the first piezoelectric sensor and the second piezoelectric sensor has a plurality of electrodes for signal derivation, the connection end to the first determination means and the end portion of the first piezoelectric sensor side different The same-polarity electrode for signal derivation is connected at the end of the second piezoelectric sensor on the side different from the connection end to the second determination means, and the first and second piezoelectric sensors are connected. By having an electric element for detecting disconnection or short-circuit of the first and second piezoelectric sensors in the part, there is an effect that it is possible to easily detect a failure such as disconnection or short-circuit of the piezoelectric sensor.
[0035]
According to a second aspect of the present invention, the first pressure sensitive part arranged to be bent along the shape of the sliding door of the vehicle and the signal detected by the first pressure sensitive part are received. First determination means for determining whether an object is sandwiched between a body opening and the sliding door, a window opening on a sliding door of a vehicle, a window opening / closing portion for opening / closing the window opening, and the window A second pressure-sensitive portion that is bendably disposed at at least one of the opening / closing portion and the window opening portion, and receives a signal detected by the second pressure-sensitive portion between the window opening portion and the window opening / closing portion; A second determining means for determining whether the object is caught in the first pressure-sensitive portion, and the first pressure-sensitive portion and the second pressure-sensitive portion have a single common and flexible to generate a signal corresponding to the deformation. A piezoelectric sensor is included, and the first and second determination means have the first and second feelings. An effect such can be easily fault detection such as disconnection or short circuit of the piezoelectric sensor by the respective inputs for receiving a detected signal in parts having an electrical element for disconnection or short circuit detection of the piezoelectric sensor.
[0036]
According to a third aspect of the present invention, the first pressure-sensitive portion disposed so as to be bent along the shape of the sliding door of the vehicle, the window opening portion attached to the sliding door of the vehicle, and the window opening portion. An open / close window opening / closing section, a second pressure sensing section disposed in at least one of the window opening / closing section and the window opening section, and output signals of the first pressure sensing section and the second pressure sensing section. And a determination means for determining whether the object is sandwiched between the body opening of the automobile and the sliding door and whether the object is sandwiched between the window opening and the window opening / closing unit. Since the pressure part and the second pressure sensing part include a single flexible piezoelectric sensor that generates a signal according to deformation, only one determination means is required, and the piezoelectric sensor is determined. It is only necessary to connect to the means at one place, and one piezoelectric sensor can be arranged effectively and efficiently. There is a kind of effect.
[0037]
According to a fourth aspect of the present invention, the first pressure-sensitive portion that is bendable along the shape of the sliding door of the vehicle, the window opening that is attached to the sliding door of the vehicle, and opening and closing the window opening. A window opening / closing section, a second pressure sensing section disposed in at least one of the window opening / closing section and the window opening section, an output signal of the first pressure sensing section, and a second pressure sensing section. Determining means for receiving two signals and determining whether the object is sandwiched between the body opening of the automobile and the sliding door or whether the object is sandwiched between the window opening and the window opening and closing unit; Since each of the first and second pressure-sensitive parts includes flexible first and second piezoelectric sensors that generate output signals according to deformation, only one determination means is required. Since two piezoelectric sensors can be arranged separately, it is easy to route the piezoelectric sensor. There is an effect that is.
[0038]
Further, according to the invention of claim 5, the control means for stopping or opening the sliding door or the window opening / closing portion being closed by the pinching detection signal from the determination means is provided, and is not necessary because the pinching is released at the time of pinching determination. There is an effect that can be prevented from being caught.
[Brief description of the drawings]
FIG. 1 is an external view of a pinch detection device and a switchgear according to an embodiment of the present invention. FIG. 2 is a cross-sectional configuration diagram taken along the line AA ′ of FIG. Configuration diagram [Fig. 4] Arrangement configuration diagram of pinching detection device of the same device [Fig. 5] Circuit configuration diagram of determination means of pinching detection device of the same device [Fig. 6] Output signal V from the filtering section of the device, pinching FIG. 7 is a characteristic diagram showing the judgment output J of the judgment unit and the applied voltage Vm to the motor. FIG. 7 is a configuration diagram when two piezoelectric sensors of the pinching detection device of the same device are connected in series. Arrangement configuration diagram of the pinch detection device with only one piezoelectric sensor. FIG. 9 is a second circuit block diagram of the judging means of the pinch detection device of the device. FIG. 10 is a pinch detection device of the device. Arrangement with only one piezoelectric sensor and receiving with one judgment means Configuration diagram [Fig. 11] Arrangement configuration diagram when signals of two piezoelectric sensors of the pinching detection device of the same apparatus are received by one determination means [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sliding door 4 Vertical edge part 6, 26 Rubber elastic body with built-in piezoelectric sensor 7, 27, 55 Piezoelectric sensor 9 Body opening part 11 Body 13 Composite piezoelectric material layer 14 Center electrode (electrode)
15 Outer electrode (electrode)
16 Rubber elastic body 19 Mating groove 31, 34, 62, 64 Determination means 44, 46, 51, 54, 56, 66 Resistor (electric element)
33, 36 Driving means 32, 35 Control means

Claims

A first pressure-sensitive portion disposed so as to be able to bend along the shape of the sliding door of the vehicle, and a signal from the first pressure-sensitive portion is received between the body opening of the automobile and the sliding door. A first determination means for determining whether the object is caught, a window opening on a sliding door of the vehicle, a window opening / closing part for opening / closing the window opening, and at least one of the window opening / closing part and the window opening. A second pressure-sensitive portion arranged to be bendable, and a second determination for receiving a signal from the second pressure-sensitive portion and determining whether an object is sandwiched between the window opening and the window opening / closing portion And each of the first and second pressure sensing parts includes a flexible first and second piezoelectric sensor that generates an output signal corresponding to the deformation, and the first piezoelectric sensor and The second piezoelectric sensor has a plurality of electrodes for signal derivation, and the first determination The signal derivation is performed at the end of the first piezoelectric sensor on the side different from the connection end to the stage and the end of the second piezoelectric sensor on the side different from the connection end to the second determination means. A pinching detection device comprising electrodes having the same polarity connected to each other, and having an electric element for detecting a disconnection or a short circuit of the first and second piezoelectric sensors at a connection portion of the first and second piezoelectric sensors.

A first pressure-sensitive portion disposed so as to be able to bend along the shape of a slide door of the vehicle, and a signal detected by the first pressure-sensitive portion between the body opening of the automobile and the slide door First determination means for determining whether the object is caught in the vehicle, a window opening on a sliding door of the vehicle, a window opening / closing part for opening / closing the window opening, and at least one of the window opening / closing part and the window opening A second pressure-sensitive portion disposed in a bendable manner, and a second signal that receives a signal detected by the second pressure-sensitive portion and determines whether an object is sandwiched between the window opening and the window opening / closing portion. The first pressure sensing unit and the second pressure sensing unit include a flexible common piezoelectric sensor that generates a signal corresponding to deformation, and the first pressure sensing unit includes the first pressure sensing unit and the second pressure sensing unit. The first and second determination means receive signals detected by the first and second pressure sensing units. Each of the entrapment detection apparatus comprising an electrical device for disconnection or short circuit detection of the piezoelectric sensor at the input of fit.

A first pressure-sensitive portion that is arranged to be bent along the shape of the vehicle sliding door, a window opening on the vehicle sliding door, a window opening / closing portion that opens and closes the window opening, and the window opening / closing A second pressure-sensitive portion disposed in at least one of the opening portion and the window opening portion, and the body opening portion of the automobile and the slide based on output signals of the first pressure-sensitive portion and the second pressure-sensitive portion. Determining means for determining whether the object is sandwiched between the door and the window opening and the window opening / closing portion; and the first pressure-sensitive portion and the second pressure-sensitive portion include: A pinch detection device including a single flexible piezoelectric sensor that generates a signal corresponding to deformation.

A first pressure-sensitive portion that is arranged to be bent along the shape of the vehicle sliding door, a window opening on the vehicle sliding door, a window opening / closing portion that opens and closes the window opening, and the window opening / closing A body of the automobile which receives a second pressure-sensitive part disposed in at least one of the first part and the window opening, an output signal of the first pressure-sensitive part and two signals from the second pressure-sensitive part Determination means for determining whether an object is sandwiched between an opening and the sliding door or whether an object is sandwiched between the window opening and the window opening / closing unit, and each of the first and second feelings is provided. The pinching detection device includes a flexible first and second piezoelectric sensor that generates an output signal corresponding to deformation.

Entrapment detection apparatus according to any one of a control means for stopping or opening operation of the sliding door or window opening and closing portion of the closing operation by entrapment detection signal from the determination means according to claim 1 to 4.