【０００１】
【発明の属する技術分野】
本発明は高速道路などの料金所を通過する車両の通行を制御する阻止装置において、衝突時の衝撃を和らげるため車両進行方向へ回避させる（リリースさせる）遮断棒回動機構にブレーキ機能と自力回動機能を持たせ、更に耐候性を向上させた阻止装置に関するものである。
【０００２】
【従来の技術】
従来の阻止装置は、高速道路その他有料道路の料金所アイランドに設置され、通行指示信号や停止指示信号により阻止棒を開閉しアイランド間のレーンを通行する車両の発進制御を行うものであり、阻止機の駆動部により回動される開閉軸を車両進行方向に突設し、この開閉軸に開閉部を軸止し、開閉部に車両が通過するレーン側に伸びる阻止棒を固定した構成であり、通行指示信号を受けると阻止機は駆動部を駆動し開閉軸を開方向へ回動し、開閉軸に軸止された開閉部とともに開閉部に固定された阻止棒を上方に約９０度回動して、開位置とし車両の通行可能状態とし、停止指示信号を受けると駆動部を駆動し開閉軸を閉方向へ回動し、阻止棒を下方に約９０度回動して、水平に停止させ閉位置の停止指示状態とするものであった。
【０００３】
また、阻止装置として、開特開２００１−１６４５２８号公報に示されているごとく、車の通過を阻止するポールはポールホルダにピンで連結されたポール取付部材に取付けられており、ポールホルダは回転機により回転可能に固定台に取付け、ポールはピンを軸として水平方向回転可能であり、ピンはポールホルダに固定され、ピンと係合するポール取付部材にはすり割が設けられ、すり割によりピンの締め付け力を調整することにより、ポールの水平回動トルクを調整出来るように構成し、車が通過する際、回転機の回転によりポールを所定角度まで開き、車両衝突時にポールに、ピンの軸方向に対し直角方向に所定以上の力からかかったとき、ポールを所定角度回転させて、ポールにかかる衝撃を抑え、ポールや車を破損させないようにしたゲート開閉装置がある。
【０００４】
また、特開２０００−４３７２９号公報に示されているごとく、遮断バーが水平軸回りに回動される回動部に対して車両進行方向に折れ曲がり自在に支持され、引っ張りバネでなる付勢部材にて折れ曲がっていない状態に付勢され、遮断バーの折れ曲がり角度が所定角度以下の場合には遮断バーの折れ曲がり状態を保持させないとともに、車両衝突による遮断バーの折れ曲がり角度が所定角度以上になる場合には圧縮バネやラチェット等からなる保持機構にて折れ曲がり状態を保持させるものとし、車両衝突時の車両の衝撃緩和、遮断機自体の破損防止、遮断バーの撥ね戻りによる危険の防止及び風やわずかな接触時の復旧作業の不要化を図った遮断機がある。
【０００５】
【発明が解決しようとする課題】
しかし、従来の阻止装置では、開閉部に阻止棒が固定されているので、車両が停止指示状態である閉位置の阻止棒に衝突すると、車両に傷つけるとともに、阻止装置自体も損傷を受ける等の問題があった。前記開特開２００１−１６４５２８号公報に示すものは阻止棒の水平回動トルクを調整出来るようにし、車両衝突時に阻止棒に、車両進行方向に所定以上の力からかかったとき、阻止棒を所定角度回転させて衝撃を抑えるものとしたが、誤って進入した車両が慌ててバックすることが多いが、阻止棒は所定角度回転した状態で停止しているので、バックしたとき阻止棒が車両に当たり車両を傷つける恐れがあった。
【０００６】
また、前記特開２０００−４３７２９号公報に示すものは阻止棒の折れ曲がり角度が所定角度以下の場合には阻止棒の折れ曲がり状態を保持させないとともに、車両衝突による阻止棒の折れ曲がり角度が所定角度以上になる場合には保持機構にて折れ曲がり状態を保持させるので、車両衝突時の車両の衝撃緩和、遮断機自体の破損減少を図っているが、同じく誤って進入した車両が慌ててバックする場合に車両を傷つけるという問題が残っている。そこで本発明は、衝突時の衝撃を和らげるための車両進行方向への遮断棒回動機構にブレーキ機能と自力回動機能を持たせたものとする。
【０００７】
【課題を解決するための手段】
上記の課題を解決するために、本発明は、阻止機本体が操作制御部からの制御信号を受けて開閉軸を駆動し開閉部を介して阻止棒を回動し、高速道路などの料金所のレーンを通過する車両の通行を制御する阻止装置において、前記開閉部は前記阻止機本体の開閉軸に軸止され上下方向に垂直面で回動される開閉アームと、この開閉アームの水平面に垂設固定した折曲軸と、この折曲軸にて開閉アームに対し平行方向から車両進行方向に折曲自在に軸着され且つ前記阻止棒を持着する折曲アームと、折曲軸に取り付けられ折曲アームに所定ブレーキ抵抗を与えて軸着させるブレーキ軸受と、一端を開閉アームの反レーン側かつ阻止機本体側に持着され他端を折曲アームの阻止棒側の折曲軸近傍に持着されたリリース機構とで構成し、前記開閉アームと折曲アームは阻止機本体側へは折曲せぬよう構成され、前記リリース機構は、前記折曲アームが停止指示時の通常位置にある時折曲軸よりレーン側で阻止機本体側の所定位置に一方の支点として回転自在に設けた軸端と、開閉アームの反レーン側で阻止機本体側の所定位置に他方の支点として設けた軸受ホルダと、一端が回転自在な軸端に保持され他端が軸受ホルダ側に達するリリース軸と、軸受ホルダに回転自在に接しリリース軸を軸止する軸受と、一端を軸受に接し他端をリリース軸の反軸端側の終端に固定し、リリース軸を反レーン側に付勢するスプリングとで構成した。
【０００８】
上記の構成によって、前記開閉部が通常状態乃至所定角度未満の折曲の場合は、リリース機構の一方の支点である軸端は折曲アームの折曲軸より阻止機本体側へ位置し、スプリングがリリース軸を介して軸端にて折曲アームに対し折曲軸を支点として反車両進行側、即ち阻止機本体側へ付勢する回転モーメントを与え、阻止棒は閉位置のまま維持され、阻止棒は停止指示時にレーン側に伸びた状態となり、一方、車両が阻止棒に強く衝突し又は、車両が通り過ぎ、阻止棒の回動角度が所定角度以上となるよう阻止棒が車両進行方向に押された場合は、開閉アームと折曲アームが折曲軸にて所定角度例えば１５度折曲した場合は、リリース機構の軸端は折曲アームの折曲軸より反阻止機本体側へ移動し、スプリングがリリース軸を介して軸端にて折曲アームに対して折曲軸を支点として車両進行側、即ち反阻止機本体側へ付勢する回転モーメントを与え、阻止棒が折曲アームと共に折曲軸を支点として車両の進行方向に折れ曲がるので、即ちリリースするので、車両と阻止棒との接触時の衝撃を少なくすることが出来るとともに、誤って進入した車両が慌ててバックした場合にも阻止棒が車両に当たることなく車両を傷つけないようにすることが出来る。
【０００９】
また、前記軸受ホルダは耐候性が良いステンレス製（又は摺動性が良く耐候性が良い含油合成樹脂製）とし、リリース軸が多少振れてもかじりつかぬようリリース軸より所定寸法幅広とした軸貫通孔と、軸受を回転自在に保持出来る半球状凹面とを形成し、前記軸受は摺動性が良く耐候性が良い含油合成樹脂製（又は耐候性が良いステンレス製）とし、軸受ホルダの半球状凹面に接する面を回転自在に保持できるように半球状凸面に形成すると、軸受ホルダや軸受は耐候性が良いので錆びることがなく、またリリース軸が多少振れても、また多少砂埃があっても軸受ホルダや軸受にかじりつかず、リリース軸は軸受に対し摺動性が良い。
【００１０】
前記リリース軸の反スプリング側にリリース軸を覆う防塵カバーを設けてリリース軸の防塵保護を図り、スプリングを覆うスプリングカバーを設けてスプリングの防塵保護とスプリングの伸縮時の怪我防止を図った構成とした。
【００１１】
【発明の実施の形態】
以下本発明の実施の形態を図１〜図８を用いて説明する。図１は本発明の実施の形態における阻止装置の正面図であり、図２は同阻止装置の上面図であり、図３は同阻止装置の要部の構成を示す部分断面正面図であり、図４は同じく要部の構成を示す部分断面正面図であり、図５は同阻止装置の要部の中のブレーキ軸受の構成を示す横断面図であり、図６は図５のブレーキ軸受のＡＡ断面図であり、図７は同じく阻止装置の要部の中のリリース機構の構成を示す横断面図であり、図８は図７のリリース機構のＢＢ断面図である。
【００１２】
図１、図２において、１は阻止機本体２と開閉部３と阻止棒４と操作制御部５とからなる阻止装置であり、高速道路その他有料道路の料金所のアイランド６に設置され、操作手段や表示手段や全体の制御を行う制御手段を備えた操作制御部５からの通行指示信号や停止指示信号により阻止機本体２が阻止棒４を開閉しアイランド６間のレーン７を通行する車両８の発進制御を行うものである。阻止装置１は親機と子機と一対の２つであるが、２つに限定するものでなく親機１つだけの場合もあり、また、操作制御部５は阻止機本体２と別途設けられているが、阻止機本体２と一体に構成してもよい。
【００１３】
前記阻止機本体２はケース部内に組み込まれたサーボモータや伝導機構等からなる駆動部及びこの駆動部の電源部（図示略）と、駆動部の出力軸でありケース部の正面に車両８の進行方向と並行に進行方向に突設された開閉軸２１等で構成されており、前記操作制御部５はサーボモータの速度や回転方向を制御するインバータ制御手段を備えたものとし、インバータ制御手段からの駆動信号を阻止機本体２に入力し、阻止機本体２の開閉軸２１を回動するよう構成している。
【００１４】
図１において、阻止機本体２は操作制御部５から通行指示信号を受けると開閉部３を介して阻止棒４を上方に約９０度回動して、開位置とし車両８の通行可能状態とし、停止指示信号を受けると阻止棒４を下方に約９０度回動して、水平に停止させ閉位置の停止指示状態とするものであり、阻止棒４の先端表面は目立つように第１の指定色の上に自由な所定形状の第２の指定色の模様付き（例えば赤及び白のゼブラカラー）としてある。
【００１５】
図３、図４において、前記開閉部３は前記開閉軸２１に軸止され上下方向に垂直面で回動される横長コ字形の開閉アーム３１と、この開閉アーム３１の開閉軸２１の取付け面と直角の水平面に（図３では、上面から下方へ及び下面から上方へと、一対として）垂設固定した折曲軸３２と、この折曲軸３２にて開閉アーム３１に対し平行方向から車両進行方向に折曲自在に軸着された横長コ字形の折曲アーム３３と、この折曲アーム３３の折曲軸３２貫通部に（同じく、図３では上側から下方へ及び下側から上方へと、一対として）取り付けられ折曲軸３２に対し所定ブレーキ抵抗を与えて軸着させるブレーキ軸受３４と、同じく折曲アーム３３に設けられ前記阻止棒４を停止指示時にレーン７側に伸びる状態に折曲アーム３４に持着させる阻止棒ロック手段３５と、一端を前記開閉アーム３１の反レーン７側かつ阻止機本体２側に持着され他端を折曲アーム３４の阻止棒４側の折曲軸３２近傍に持着されたリリース機構３６と、開閉アーム３１が９０度回転したとき保持出来る開閉アームストッパー３７とで構成されている。
【００１６】
図５（図３では、上側から下方へ及び下側から上方へと、一対として示しているが、図５では下側から軸着させた一方の折曲軸３２とブレーキ軸受３４を示す）及び図６において、前記折曲軸３２は他の部品固定用の面カット部３２ａと他の部品締め付け用の雄ネジ部３２ｂからなり、前記ブレーキ軸受３４を貫通させて折曲アーム３４の下側（開閉アーム３１との間）と上側（反開閉アーム３１側、図３の他方は反開閉アーム３１側は、逆に下側となる。以下同様）に折曲アーム３４に夫々固定した摺回板３４ａと、この摺回板３４ａの上側に面カット部３２ａにて折曲軸３２に固定して設けた摩擦板３４ｂと、この摩擦板３４ｂの上面に載置した４個のブレーキボール３４ｃと、この４個のブレーキボール３４ｃを保持し位置決めする４個の孔を有し摩擦板３４ｂの上側に面カット部３２ａにて折曲軸３２に固定して設けたボール保持板３４ｄと、これらの内側に円周面に４個のブレーキボール３４ｃと夫々所定角度範囲例えば３０度で接する４か所の平面部３４ｅ１とブレーキボール３４ｃと夫々所定角度範囲例えば６０度で接せぬ所定深さの溝部３４ｅ２とからなり面カット部３２ａにて折曲軸３２に固定して設けた溝板３４ｅと、折曲軸３２の雄ネジ部３２ｂに対して締め付けるナット・ワッシャ・平座金等からなる締付部材３４ｆとからなり、前記摩擦板３４ｂ、ボール保持板３４ｄ及び溝板３４ｅは面カット部３２ａにて回転せぬよう折曲軸３２に固定され、折曲アーム３４と摺回板３４ａとは一体に回転出来るよう構成されている。
【００１７】
前記ボール保持板３４ｄの４個の孔にて４個のブレーキボール３４ｃを保持して位置決めし、締付部材３４ｆにて溝板３４ｅの平面部３４ｅ１、ブレーキボール３４ｃを介して摩擦板３４ｂを摺回板３４ａに押しつけ、所定のブレーキ力を生じさせ、例えば阻止棒４の中央部に加わる力が９８Ｎ未満の時は折曲アーム３４に固定した摺回板３４ａは回転せず、９８Ｎを越えると折曲アーム３４と摺回板３４ａとが回転出来る程度の摩擦力を生じさせるように、調整してある。
【００１８】
前記リリース機構３６は、前記折曲アーム３４が停止指示時の通常位置にある時折曲軸３２よりレーン７側で阻止機本体２側の所定位置に一方の支点として回転自在に設けた軸端３６ａと、開閉アーム３１の反レーン７側で阻止機本体２側の所定位置に他方の支点として設けた軸受ホルダ３６ｂと、一端が回転自在な軸端３６ａに保持され他端が軸受ホルダ３６ｂ側に達するリリース軸３６ｃと、軸受ホルダ３６ｂに回転自在に接しこのリリース軸３６ｃを軸止する軸受３６ｄと、一端をこの軸受３６ｄに接し他端をリリース軸３６ｃの反軸端３６ａ側の終端に固定し、リリース軸３６ｃを反レーン７側に付勢するスプリング３６ｅとを主要部材として構成されている。
【００１９】
また、前記軸受ホルダ３６ｂは耐候性が良いステンレス製（又は摺動性が良く耐候性が良い含油合成樹脂製）とし、リリース軸３６ｃが多少振れても、また多少砂埃があってもかじりつかぬようリリース軸３６ｃより所定寸法幅広とした軸貫通孔３６ｂ１と、軸受３６ｄを回転自在に保持出来る半球状凹面３６ｂ２とを形成し、前記軸受３６ｄは摺動性が良く耐候性が良い含油合成樹脂製（又は耐候性が良いステンレス製）とし、軸受ホルダの半球状凹面に接する面を回転自在に保持できるように半球状凸面に形成し、更に、前記リリース軸３６ｃの防塵保護用として反スプリング３６ｅ側にリリース軸３６ｃを覆う防塵カバー３６ｆを設け、スプリング３６ｅの防塵保護用としてスプリング３６ｅを覆うスプリングカバー３６ｇを設けた。
【００２０】
以上により、前記開閉部３が通常状態乃至所定角度例えば１５度未満の折曲の場合は、リリース機構３６の一方の支点である軸端３６ａは折曲アーム３４の折曲軸３２より阻止機本体２側へ位置し、スプリング３６ｅがリリース軸３６ｃを介して軸端３６ａにて折曲アーム３４に対し折曲軸３２を支点として反車両８進行側、即ち阻止機本体２側へ付勢する回転モーメントを与え、また、開閉アーム３１と折曲アーム３４は阻止機本体２側へは折曲せぬよう構成され、阻止棒４は停止指示時にレーン７側に伸びた状態となる。一方、阻止棒４が車両８進行方向に押され、開閉アーム３１と折曲アーム３４が折曲軸３２にて所定角度例えば１５度折曲すると、リリース機構３６の軸端３６ａは折曲アーム３４の折曲軸３２より反阻止機本体２側へ移動し、スプリング３６ｅがリリース軸３６ｃを介して軸端３６ａにて折曲アーム３４に対して折曲軸３２を支点として車両８進行側、即ち反阻止機本体２側へ付勢する回転モーメントを与えるよう構成される。
【００２１】
次に本実施例の動作について説明する。前記操作制御部５から通行指示信号を受けると、阻止機本体２は開閉軸２１を開方向へ回動し、阻止棒ロック手段３５にて折曲アーム３４に固定されている阻止棒４を開閉軸２１に軸止された開閉アーム３１を介して上方に約９０度回動して所定の速度で開動作を行い、垂直に持ち上げ図１に鎖線で示す開位置とし車両８の通行可能状態とする。また、操作制御部５から停止指示信号を受けると、阻止機本体２は開閉軸２１を逆の閉方向へ回動し、阻止棒４を下方に約９０度回動して開動作時の所定の速度より遅い速度で閉動作を行い、水平に下げて図１に実線で示す閉位置の停止指示状態とする。なお、車両８の通行がない場合は、常時閉位置の停止指示状態とする。
【００２２】
次に、車両８が損傷せぬ程度の衝撃で閉位置の阻止棒４に軽く接触して停止した乃至例えば回動角度が１５度未満の場合、阻止棒４の中央部に加わる力は例えば９８Ｎ未満であり、通常の停止指示状態の閉位置と同じく、前記ブレーキ軸受３４では４個のブレーキボール３４ｃが溝部３４ｅ２の平面部３４ｅ１と夫々接しており、平面部３４ｅ１、ブレーキボール３４ｃを介して摩擦板３４ｂを摺回板３４ａに押しつけ、ブレーキ力を保持した状態を続けるとともに、前記リリース機構３６もスプリング３６ｅがリリース軸３６ｃを介して軸端３６ａにて折曲アーム３４に対し折曲軸３２を支点として反車両８進行側へ付勢する回転モーメントを与えているので、阻止棒４は閉位置のまま維持される。
【００２３】
一方、車両８が阻止棒４に強く例えば９８Ｎを越える力で衝突した乃至例えば回動角度が１５度以上の場合、又は、車両８が通り過ぎた場合は、前記ブレーキ軸受３４ではブレーキ力を越える回転力が加わり、折曲アーム３４と摺回板３４ａとが回転し、ブレーキボール３４ｃが溝部３４ｅ２の平面部３４ｅ１から外れ溝部３４ｅ２まで移動すると、ブレーキボール３４ｃは摩擦板３４ｂを摺回板３４ａに押しつけなくなり、ブレーキ力が解除されると共に、リリース機構３６のスプリング３６ｅがリリース軸３６ｃを介して軸端３６ａにて折曲アーム３４に対して折曲軸３２を支点として車両８進行側へ付勢する回転モーメントを与えるので、阻止棒４は折曲アーム３１と共に折曲軸３２を支点として車両８の進行方向にブレーキボール３４ｃが溝部３４ｅ２の範囲内で自由に折れ曲がり、車両８と阻止棒４との接触時の衝撃を少なくする。約９０度折れ曲がると折曲アームロック３７も約９０度回動して折曲状態を保持することが出来る。もし、阻止棒４は折曲アーム３１と共に折曲軸３２を支点として車両８の反進行方向に動いても、ブレーキボール３４ｃが溝部３４ｅ２の範囲から平面部３４ｅ１に達するとブレーキ力が働き、阻止棒４が元の折れ曲っていない閉位置に撥ね戻るのを防止するので、後続の車両８等への阻止棒４の撥ね戻りによる危険性を防止できる。
【００２４】
また、前記軸受ホルダ３６ｂは耐候性が良いステンレス製（又は摺動性が良く耐候性が良い含油合成樹脂製）とし、リリース軸３６ｃより所定寸法幅広とした軸貫通孔３６ｂ１と、軸受３６ｄを回転自在に保持出来る半球状凹面３６ｂ２とを形成し、軸受３６ｄは摺動性が良く耐候性が良い含油合成樹脂製（又は耐候性が良いステンレス製）とし、軸受ホルダの半球状凹面に接する面を回転自在に保持できるように半球状凸面に形成したから、軸受ホルダ３６ｂや軸受３６ｄは錆びることがなく、またリリース軸３６ｃが多少振れても、また多少砂埃があっても軸受ホルダ３６ｂや軸受３６ｄにかじりつかず、リリース軸３６ｃは軸受３６ｄに対し摺動性が良い。更に、前記反スプリング３６ｅ側にリリース軸３６ｃを覆う防塵カバー３６ｆを設けたから、リリース軸３６ｃは防塵保護されており、スプリング３６ｅを覆うスプリングカバー３６ｇを設けたから、スプリング３６ｅは防塵保護とスプリングの伸縮時の怪我防止がなされている。
【００２５】
なお、本発明は上記実施の形態に限定するものでなく、例えばリリース機構３６は開閉アーム３１と折曲アーム３４に夫々設けた所定の支点間を引っ張るバネで、又は開閉アーム３１の所定の支点間より反折曲アーム３４側に圧縮バネで構成しても良く、ブレーキ軸受３４は図３に示すごとく上下１対でなく、どちらか一方でもよく、ブレーキボール３４ｃの数は３個でも、６個でもよい。
【００２６】
【発明の効果】
本発明は、阻止機本体が操作制御部からの制御信号を受けて開閉軸を駆動し開閉部を介して阻止棒を回動し、高速道路などの料金所のレーンを通過する車両の通行を制御する阻止装置において、前記開閉部は前記阻止機本体の開閉軸に軸止され上下方向に垂直面で回動される開閉アームと、この開閉アームの水平面に垂設固定した折曲軸と、この折曲軸にて開閉アームに対し平行方向から車両進行方向に折曲自在に軸着され且つ前記阻止棒を持着する折曲アームと、折曲軸に取り付けられ折曲アームに所定ブレーキ抵抗を与えて軸着させるブレーキ軸受と、一端を開閉アームの反レーン側かつ阻止機本体側に持着され他端を折曲アームの阻止棒側の折曲軸近傍に持着されたリリース機構とで構成し、前記開閉アームと折曲アームは阻止機本体側へは折曲せぬよう構成され、前記リリース機構は、前記折曲アームが停止指示時の通常位置にある時折曲軸よりレーン側で阻止機本体側の所定位置に一方の支点として回転自在に設けた軸端と、開閉アームの反レーン側で阻止機本体側の所定位置に他方の支点として設けた軸受ホルダと、一端が回転自在な軸端に保持され他端が軸受ホルダ側に達するリリース軸と、軸受ホルダに回転自在に接しリリース軸を軸止する軸受と、一端を軸受に接し他端をリリース軸の反軸端側の終端に固定し、リリース軸を反レーン側に付勢するスプリングとで構成したから、車両が損傷せぬ程度の衝撃で閉位置の阻止棒に軽く接触して停止する程度乃至前記ブレーキ軸受に対する阻止棒の回動角度が所定角度までの範囲の場合は、通常の停止指示状態の閉位置と同じく、リリース機構の一方の支点である軸端は折曲アームの折曲軸より阻止機本体側へ位置し、スプリングがリリース軸を介して軸端にて折曲アームに対し折曲軸を支点として反車両進行側、即ち阻止機本体側へ付勢する回転モーメントを与え、阻止棒は閉位置のまま維持され、阻止棒は停止指示時にレーン側に伸びた状態となり、一方、車両が阻止棒に強く衝突し又は、車両が通り過ぎ、阻止棒の回動角度が所定角度以上となるよう阻止棒が車両進行方向に押された場合は、開閉アームと折曲アームが折曲軸にて所定角度例えば１５度折曲した場合は、リリース機構の軸端は折曲アームの折曲軸より反阻止機本体側へ移動し、スプリングがリリース軸を介して軸端にて折曲アームに対して折曲軸を支点として車両進行側、即ち反阻止機本体側へ付勢する回転モーメントを与え、阻止棒が折曲アームと共に折曲軸を支点として車両の進行方向に折れ曲がりリリースするので、車両と阻止棒との接触時の衝撃を少なくするとともに、誤って進入した車両が慌ててバックした場合にも阻止棒が車両に当たることなく車両を傷つけないようにした阻止装置が提供できる。
【００２７】
また、前記軸受ホルダはステンレス製（又は含油合成樹脂製）とし、リリース軸より所定寸法幅広とした軸貫通孔と、軸受を回転自在に保持出来る半球状凹面とを形成し、軸受は含油合成樹脂製（又はステンレス製）とし、軸受ホルダの半球状凹面に接する面を回転自在に保持できるように半球状凸面に形成したから、屋外に設置される阻止装置に於いて軸受ホルダや軸受は耐候性が良く錆びることがなく、また前記リリース時にリリース軸が多少振れても、また多少の砂埃があっても軸受ホルダや軸受にかじりつかず、また、軸受に対するリリース軸の摺動性が良くリリース軸はスプリングにより付勢されて円滑に摺動出来る信頼性の高い阻止装置が提供できる。
【００２８】
更に、前記反スプリング側にリリース軸を覆う防塵カバーを設けたから、リリース軸は防塵保護されており、スプリングを覆うスプリングカバーを設けたから、スプリングも埃が多い屋外に設置されても埃の悪影響が少なくスプリングの伸縮時の怪我防止効果がある阻止装置が提供できる。
【図面の簡単な説明】
【図１】本発明の実施の形態における阻止装置の正面図である。
【図２】同阻止装置の上面図である。
【図３】同阻止装置の要部の構成を示す部分断面正面図である。
【図４】同じく要部の構成を示す部分断面正面図である。
【図５】同阻止装置の要部の中のブレーキ軸受の構成を示す横断面図である。
【図６】図５のブレーキ軸受のＡＡ断面図である。
【図７】同じく阻止装置の要部の中のリリース機構の構成を示す横断面図である。
【図８】図７のリリース機構のＢＢ断面図である。
【符号の説明】
１ 阻止装置
２ 阻止機本体
２１ 開閉軸
３ 開閉部
３１ 開閉アーム
３２ 折曲軸
３３ 折曲アーム
３４ ブレーキ軸受
３６ リリース機構
３６ａ 軸端
３６ｂ 軸受ホルダ
３６ｂ１ 軸受逃げ孔
３６ｂ２ 半球状凹面
３６ｃ リリース軸
３６ｄ 軸受
３６ｅ スプリング
３６ｆ 防塵カバー
３６ｇ スプリングカバー
４ 阻止棒
５ 操作制御部
６ アイランド
７ レーン
８ 車両[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a blocking device for controlling the traffic of a vehicle passing through a tollgate such as an expressway, and a braking function and a self-powered rotation of a blocking rod rotating mechanism for avoiding (releasing) the vehicle in the traveling direction to reduce the impact at the time of a collision. The present invention relates to a blocking device having a dynamic function and further improved weather resistance.
[0002]
[Prior art]
Conventional blocking devices are installed on tollgate islands on expressways and other toll roads. The blocking rods are opened and closed by a traffic signal or a stop signal to control the start of vehicles passing through the lane between the islands. An opening / closing shaft that is rotated by a drive unit of the machine protrudes in the vehicle traveling direction, the opening / closing unit is fixed to the opening / closing shaft, and a blocking bar extending to the lane side where the vehicle passes is fixed to the opening / closing unit. Upon receiving the passage instruction signal, the blocking device drives the driving unit to rotate the opening / closing shaft in the opening direction, and the blocking bar fixed to the opening / closing portion together with the opening / closing portion fixed to the opening / closing shaft by about 90 degrees. When the stop instruction signal is received, the drive unit is driven to rotate the opening / closing shaft in the closing direction, and the blocking bar is rotated downward by about 90 degrees to move the vehicle horizontally. The operation was stopped and the stop position of the closed position was designated.
[0003]
As a blocking device, as shown in Japanese Patent Application Laid-Open No. 2001-164528, a pole that blocks the passage of a vehicle is mounted on a pole mounting member connected to a pole holder with a pin, and the pole holder rotates. The pole is rotatable in the horizontal direction around the pin, the pin is fixed to the pole holder, and the pole mounting member engaging with the pin is provided with a slit. The horizontal rotation torque of the pole can be adjusted by adjusting the tightening force of the pole, and when the car passes, the pole is opened to a predetermined angle by the rotation of the rotating machine, and the pin shaft is When a force greater than a predetermined force is applied in a direction perpendicular to the direction, the pole is rotated by a predetermined angle to reduce the impact on the pole and prevent the pole and the car from being damaged There is the gate opening and closing device.
[0004]
Further, as disclosed in Japanese Patent Application Laid-Open No. 2000-43729, a biasing member formed of a tension spring is supported by a turning portion that is turned around a horizontal axis so as to be bent freely in the vehicle traveling direction. In the case where the bending angle of the blocking bar is not bent and the bending angle of the blocking bar is less than a predetermined angle, the bending state of the blocking bar is not maintained, and when the bending angle of the blocking bar due to a vehicle collision is greater than a predetermined angle. Shall be held by a holding mechanism consisting of a compression spring, ratchet, etc., to reduce the impact of the vehicle in the event of a vehicle collision, to prevent breakage of the circuit breaker itself, There is a circuit breaker that eliminates the need for recovery work upon contact.
[0005]
[Problems to be solved by the invention]
However, in the conventional blocking device, since the blocking bar is fixed to the opening / closing portion, when the vehicle collides with the blocking bar in the closed position where the stop is instructed, the vehicle is damaged and the blocking device itself is also damaged. There was a problem. Japanese Patent Application Laid-Open Publication No. 2001-164528 discloses that the horizontal rotation torque of the blocking bar can be adjusted, and when the blocking bar is subjected to a predetermined force or more in the vehicle traveling direction at the time of a vehicle collision, the blocking bar is moved to a predetermined position. Although it is assumed that the impact is suppressed by rotating the angle, the vehicle that entered by mistake often backs up in a hurry, but since the blocking bar is stopped at a predetermined angle, the blocking bar hits the vehicle when backing. There was a risk of damaging the vehicle.
[0006]
Further, the one disclosed in Japanese Patent Application Laid-Open No. 2000-43729 does not hold the bending state of the blocking bar when the bending angle of the blocking bar is equal to or less than a predetermined angle, and the bending angle of the blocking bar due to a vehicle collision is more than a predetermined angle. In this case, the holding mechanism is used to hold the bent state, so that the impact of the vehicle in the event of a vehicle collision is reduced and the breaker itself is reduced. The problem of hurting remains. Therefore, according to the present invention, the blocking rod rotating mechanism in the vehicle traveling direction for reducing the impact at the time of a collision is provided with a braking function and a self-rotating function.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is directed to a toll booth such as a highway, in which a blocking machine body receives a control signal from an operation control unit, drives an opening / closing shaft, rotates a blocking bar through the opening / closing unit, and In the blocking device for controlling the traffic of vehicles passing through the lane, the opening and closing unit is fixed to the opening and closing shaft of the main body of the blocking device and is turned on a vertical surface in the vertical direction. A bending shaft which is vertically fixed, a bending arm which is pivotally mounted on the bending shaft in a vehicle traveling direction from a direction parallel to the opening / closing arm, and which holds the blocking bar; and a folding shaft which is attached to the bending shaft. A brake bearing for applying a predetermined brake resistance to the curved arm to attach it to the shaft, and one end attached to the opposite side of the opening / closing arm on the lane side and to the main body of the blocking device, and the other end attached to the vicinity of the bending shaft on the blocking bar side of the bending arm. And the release mechanism The bending mechanism and the bending arm are configured so as not to bend toward the main body of the blocking machine, and the release mechanism is configured such that when the bending arm is at the normal position at the time of the stop instruction, the release mechanism is provided on the lane side with respect to the bending axis. A shaft end rotatably provided at one position as a fulcrum, a bearing holder provided as a second fulcrum at a predetermined position on the side of the blocking device opposite the lane of the opening / closing arm, and one end held at a rotatable shaft end. A release shaft with the other end reaching the bearing holder, a bearing rotatably in contact with the bearing holder and locking the release shaft, and one end in contact with the bearing and the other end fixed to the opposite end of the release shaft on the opposite end of the release shaft. The spring is configured to bias the shaft toward the opposite side of the lane.
[0008]
According to the above configuration, when the opening / closing portion is in a normal state or bent below a predetermined angle, the shaft end, which is one fulcrum of the release mechanism, is located closer to the blocking unit body than the bent shaft of the bent arm, and the spring is At the shaft end via the release shaft, a rotational moment is applied to the bending arm toward the anti-vehicle advancement side, that is, the main body side of the thruster, with the bending shaft as a fulcrum. Is extended to the lane side when the stop instruction is given, while the vehicle strongly collides with the blocking bar, or the vehicle passes by, and the blocking bar is pushed in the vehicle traveling direction so that the rotation angle of the blocking bar becomes a predetermined angle or more. If the opening and closing arm and the bending arm are bent at a predetermined angle, for example, 15 degrees, at the bending axis, the shaft end of the release mechanism moves from the bending axis of the bending arm to the anti-blocking device main body side, and the spring is moved. At the shaft end via the release shaft Since a turning moment is applied to the bending arm toward the vehicle traveling side with the bending axis as a fulcrum, that is, the anti-blocking device body side, and the blocking bar is bent with the bending arm in the traveling direction of the vehicle with the bending axis as a fulcrum. That is, since the release is performed, it is possible to reduce the impact at the time of contact between the vehicle and the blocking bar, and to prevent the blocking bar from hitting the vehicle without damaging the vehicle even if the vehicle that has entered by mistake has suddenly backed up. I can do it.
[0009]
The bearing holder is made of stainless steel having good weather resistance (or made of oil-containing synthetic resin having good slidability and good weather resistance), and has a predetermined width wider than that of the release shaft so that the release shaft does not seize even if the release shaft slightly shakes. A through hole and a hemispherical concave surface capable of holding the bearing rotatably are formed. The bearing is made of an oil-impregnated synthetic resin having good slidability and good weather resistance (or made of stainless steel having good weather resistance). If the surface in contact with the concave surface is formed as a hemispherical convex surface so that it can be rotatably held, the bearing holder and bearing will have good weather resistance and will not rust, and even if the release shaft slightly shakes and there is some dust Also, the release shaft has good slidability with respect to the bearing without being rubbed with the bearing holder or the bearing.
[0010]
A configuration in which a dustproof cover that covers the release shaft is provided on the side opposite to the spring of the release shaft to protect the release shaft against dust, and a spring cover that covers the spring is provided to protect the spring against dust and prevent injury when the spring expands and contracts. did.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. FIG. 1 is a front view of a blocking device according to an embodiment of the present invention, FIG. 2 is a top view of the blocking device, FIG. 3 is a partial cross-sectional front view showing a configuration of a main part of the blocking device, FIG. 4 is a partial cross-sectional front view showing the configuration of the main part, FIG. 5 is a transverse cross-sectional view showing the configuration of the brake bearing in the main part of the blocking device, and FIG. FIG. 7 is a cross-sectional view showing the structure of the release mechanism in the main part of the blocking device, and FIG. 8 is a cross-sectional view of the release mechanism shown in FIG.
[0012]
1 and 2, reference numeral 1 denotes a blocking device including a blocking device body 2, an opening / closing unit 3, a blocking bar 4, and an operation control unit 5, which is installed on an island 6 of a tollgate on a highway or other toll road, and is operated. The vehicle that passes through the lane 7 between the islands 6 by the blocking machine body 2 opening and closing the blocking bar 4 in response to a passage instruction signal or a stop instruction signal from an operation control unit 5 including means, a display unit, and a control unit that performs overall control. 8 is performed. The blocking device 1 is a pair of a master device and a slave device, but the number is not limited to two, and there may be only one master device. The operation control unit 5 is provided separately from the blocking device body 2. However, it may be configured integrally with the blocking machine main body 2.
[0013]
The main body 2 is a drive unit including a servomotor and a transmission mechanism incorporated in a case unit, a power supply unit (not shown) of the drive unit, and an output shaft of the drive unit. The operation control unit 5 includes an opening / closing shaft 21 and the like protruding in the traveling direction in parallel with the traveling direction. The operation control unit 5 includes inverter control means for controlling the speed and rotation direction of the servomotor. Is input to the main body 2 of the blocking machine, and the opening / closing shaft 21 of the main body 2 of the blocking machine is rotated.
[0014]
In FIG. 1, when the main body 2 of the blocking device receives a traffic instruction signal from the operation control unit 5, the blocking bar 4 is rotated upward by about 90 degrees via the opening / closing unit 3 to be in the open position and the vehicle 8 is ready for traffic. When the stop instruction signal is received, the blocking bar 4 is rotated downward by about 90 degrees to stop horizontally to bring the closed position into a stop instruction state. It is given a pattern of a second specified color having a free predetermined shape on the specified color (for example, red and white zebra colors).
[0015]
3 and 4, the opening / closing portion 3 is fixed to the opening / closing shaft 21 and is a horizontally long U-shaped opening / closing arm 31 which is rotated in a vertical plane in the vertical direction. A vertical axis (in FIG. 3, as a pair from the upper side to the lower side and the lower side to the upper side) perpendicular to a horizontal plane, and the bending axis 32 is used to move the vehicle from the direction parallel to the open / close arm 31. A bent arm 33 of a horizontally long U-shape, which is pivotally attached to the bending arm 33, and a bent shaft 32 penetrating portion of the bent arm 33 (similarly, in FIG. A) a brake bearing 34 attached to the bending shaft 32 to apply a predetermined brake resistance to the shaft, and a bending arm 34 provided on the bending arm 33 so as to extend toward the lane 7 when the stop rod 4 is instructed to stop. Block A bar lock means 35 and a release, one end of which is held on the side opposite to the lane 7 of the opening / closing arm 31 and on the side of the blocker body 2 and the other end is held near the bending shaft 32 of the bending arm 34 on the side of the blocking bar 4. It comprises a mechanism 36 and an opening / closing arm stopper 37 that can be held when the opening / closing arm 31 rotates 90 degrees.
[0016]
FIG. 5 (FIG. 3 shows a pair from the upper side to the lower side and from the lower side to the upper side as a pair, but FIG. 5 shows one of the bending shaft 32 and the brake bearing 34 which are mounted on the lower side) and FIG. 6, the bending shaft 32 includes a surface cut portion 32a for fixing other components and a male screw portion 32b for tightening other components. A sliding plate 34a fixed to the bending arm 34 is provided between the folding arm 34 and the upper side (the side opposite to the opening / closing arm 31; the other side in FIG. A friction plate 34b fixed to the bending shaft 32 at the surface cut portion 32a above the sliding plate 34a, four brake balls 34c placed on the upper surface of the friction plate 34b, 4 for holding and positioning the brake ball 34c And a ball holding plate 34d provided on the upper side of the friction plate 34b and fixed to the bending shaft 32 by the surface cut portion 32a, and four brake balls 34c on the inner surface of the ball holding plate 34c at predetermined angles. A range of, for example, four flat portions 34e1 contacting each other at 30 degrees, a brake ball 34c, and a groove portion 34e2 of a predetermined depth that does not contact each other at a predetermined angle range, for example, 60 degrees, are fixed to the bending shaft 32 at a surface cut portion 32a. And a tightening member 34f formed of a nut, washer, flat washer or the like for tightening the male screw portion 32b of the bent shaft 32. The friction plate 34b, the ball holding plate 34d, and the groove plate 34e. Is fixed to the bending shaft 32 so as not to rotate at the surface cut portion 32a, and the bending arm 34 and the sliding plate 34a can be integrally rotated.
[0017]
The four brake balls 34c are held and positioned by the four holes of the ball holding plate 34d, and the friction plate 34b is slid by the fastening member 34f through the flat portion 34e1 of the groove plate 34e and the brake ball 34c. By pressing against the turning plate 34a to generate a predetermined braking force, for example, when the force applied to the central portion of the blocking bar 4 is less than 98N, the sliding plate 34a fixed to the bending arm 34 does not rotate, and when it exceeds 98N. It is adjusted so that the bending arm 34 and the sliding plate 34a generate a frictional force enough to rotate.
[0018]
The release mechanism 36 has a shaft end 36a rotatably provided as a fulcrum at a predetermined position on the lane 7 side and on the lane 7 side with respect to the lane 7 when the bending arm 34 is at a normal position at the time of a stop instruction. A bearing holder 36b provided as a fulcrum at the predetermined position on the blocker body 2 side on the side opposite to the lane 7 of the opening / closing arm 31 and one end held by a rotatable shaft end 36a and the other end reaching the bearing holder 36b side. A release shaft 36c, a bearing 36d rotatably in contact with the bearing holder 36b and axially locking the release shaft 36c, and one end in contact with the bearing 36d and the other end fixed to the end of the release shaft 36c on the side opposite to the shaft end 36a, A spring 36e for urging the release shaft 36c toward the opposite side of the lane 7 is a main member.
[0019]
The bearing holder 36b is made of stainless steel having good weather resistance (or made of an oil-containing synthetic resin having good slidability and good weather resistance). The bearing holder 36b does not stick even if the release shaft 36c slightly shakes or there is some dust. A shaft through hole 36b1 having a predetermined dimension wider than the release shaft 36c and a hemispherical concave surface 36b2 capable of rotatably holding the bearing 36d are formed. The bearing 36d is made of an oil-impregnated synthetic resin having good slidability and good weather resistance. (Or made of stainless steel having good weather resistance), and formed into a hemispherical convex surface so that the surface in contact with the hemispherical concave surface of the bearing holder can be rotatably held. Further, the anti-spring 36e side for dustproof protection of the release shaft 36c. A dust cover 36f covering the release shaft 36c is provided, and a spring cover 36g covering the spring 36e is provided to protect the spring 36e from dust.
[0020]
As described above, when the opening / closing section 3 is in the normal state or bent at a predetermined angle, for example, less than 15 degrees, the shaft end 36a which is one fulcrum of the release mechanism 36 is moved from the bending shaft 32 of the bending arm 34 to the blocking device main body 2 The spring 36e is provided at the shaft end 36a via the release shaft 36c to generate a rotational moment that urges the bending arm 34 toward the opposite side of the vehicle 8 with the bending shaft 32 as a fulcrum. In addition, the opening / closing arm 31 and the bending arm 34 are configured not to bend toward the blocking machine main body 2 side, and the blocking bar 4 extends to the lane 7 side when a stop instruction is given. On the other hand, when the blocking bar 4 is pushed in the traveling direction of the vehicle 8 and the opening / closing arm 31 and the bending arm 34 are bent at a predetermined angle, for example, 15 degrees, at the bending shaft 32, the shaft end 36 a of the release mechanism 36 is The bending shaft 32 moves toward the anti-blocking device main body 2 side, and a spring 36e is provided at the shaft end 36a via the release shaft 36c with respect to the bending arm 34 with the bending shaft 32 as a fulcrum, that is, the anti-blocking device. It is configured to give a rotational moment urging to the main body 2 side.
[0021]
Next, the operation of this embodiment will be described. Upon receiving the passage instruction signal from the operation control unit 5, the main body 2 of the blocking device rotates the opening / closing shaft 21 in the opening direction and opens / closes the blocking bar 4 fixed to the bending arm 34 by the blocking bar locking means 35. It rotates about 90 degrees upward through an opening / closing arm 31 fixed to the shaft 21 to perform an opening operation at a predetermined speed, and lifts vertically to an open position shown by a chain line in FIG. I do. When a stop instruction signal is received from the operation control unit 5, the main body 2 of the blocking device rotates the opening / closing shaft 21 in the opposite closing direction, and rotates the blocking bar 4 downward by about 90 degrees to perform the predetermined operation during the opening operation. The closing operation is performed at a speed lower than the speed shown in FIG. When the vehicle 8 does not pass, the stop instruction state of the normally closed position is set.
[0022]
Next, when the vehicle 8 is stopped by lightly touching the blocking bar 4 in the closed position with an impact that is not damaged, for example, when the rotation angle is less than 15 degrees, the force applied to the central portion of the blocking bar 4 is, for example, 98N. In the brake bearing 34, four brake balls 34c are in contact with the flat portions 34e1 of the groove portions 34e2, respectively, and the frictional force is generated via the flat portions 34e1 and the brake balls 34c. The plate 34b is pressed against the sliding plate 34a, and the brake force is maintained, and the release mechanism 36 also uses the spring 36e to support the bending shaft 32 with respect to the bending arm 34 at the shaft end 36a via the release shaft 36c. As a result, a rotation moment urging the anti-vehicle 8 toward the traveling side is given, so that the blocking bar 4 is maintained in the closed position.
[0023]
On the other hand, when the vehicle 8 collides strongly with the blocking bar 4 with a force exceeding, for example, 98 N or, for example, when the turning angle is 15 degrees or more, or when the vehicle 8 passes by, the brake bearing 34 rotates beyond the braking force. When a force is applied, the bending arm 34 and the sliding plate 34a rotate, and the brake ball 34c moves from the flat portion 34e1 of the groove 34e2 to the groove 34e2, the brake ball 34c presses the friction plate 34b against the sliding plate 34a. As the brake force is released, the brake force is released, and the spring 36e of the release mechanism 36 biases the bending arm 34 at the shaft end 36a via the release shaft 36c toward the traveling side of the vehicle 8 with the bending shaft 32 as a fulcrum. Since a moment is applied, the blocking rod 4 is moved in the traveling direction of the vehicle 8 about the bending shaft 32 together with the bending arm 31 in the traveling direction of the vehicle 8. c is freely bent within the groove 34E2, to reduce the impact at the time of contact with the blocking bar 4 and the vehicle 8. When bent about 90 degrees, the bending arm lock 37 also rotates about 90 degrees and can maintain the bent state. Even if the blocking bar 4 moves in the opposite direction of travel of the vehicle 8 with the bending shaft 32 as a fulcrum together with the bending arm 31, when the brake ball 34c reaches the flat portion 34e1 from the range of the groove 34e2, the braking force is applied, 4 is prevented from returning to the original unfolded closed position, so that the risk of the blocking rod 4 returning to the following vehicle 8 or the like can be prevented.
[0024]
The bearing holder 36b is made of stainless steel having good weather resistance (or made of an oil-containing synthetic resin having good slidability and good weather resistance). The bearing holder 36b rotates a shaft through hole 36b1 wider than the release shaft 36c by a predetermined dimension and a bearing 36d. A hemispherical concave surface 36b2 that can be freely held is formed, and the bearing 36d is made of an oil-impregnated synthetic resin having good slidability and good weather resistance (or made of stainless steel having good weather resistance). Since the bearing holder 36b and the bearing 36d are formed to have a hemispherical convex surface so as to be rotatable, the bearing holder 36b and the bearing 36d do not rust. Without releasing, the release shaft 36c has good slidability with respect to the bearing 36d. Furthermore, since the dustproof cover 36f covering the release shaft 36c is provided on the side opposite to the spring 36e, the release shaft 36c is dustproof protected. Since the spring cover 36g covering the spring 36e is provided, the spring 36e provides dustproof protection and expansion and contraction of the spring. Prevention of time injuries has been made.
[0025]
The present invention is not limited to the above embodiment. For example, the release mechanism 36 is a spring that pulls between predetermined fulcrums provided on the opening / closing arm 31 and the bending arm 34, or a predetermined fulcrum of the opening / closing arm 31. A compression spring may be formed on the side of the anti-bending arm 34 from the middle, and the brake bearing 34 may be either one of the upper and lower pairs, as shown in FIG. It may be individual.
[0026]
【The invention's effect】
According to the present invention, a blocking machine body receives a control signal from an operation control unit, drives an opening / closing shaft, rotates a blocking bar through the opening / closing unit, and allows a vehicle passing through a lane of a tollgate such as a highway. In the blocking device to be controlled, the opening / closing portion is fixed to the opening / closing shaft of the blocking device main body, and is an opening / closing arm that is vertically rotated in a vertical plane; a bending shaft that is vertically fixed to a horizontal plane of the opening / closing arm; A bending arm which is attached to the opening / closing arm so as to be able to bend freely from a direction parallel to the opening / closing arm in the vehicle traveling direction and which holds the blocking bar; and a predetermined braking resistance is applied to the bending arm attached to the bending shaft. A brake bearing to be mounted on the shaft, and a release mechanism having one end attached to the opposite side of the lane and the blocking device body of the opening / closing arm and the other end attached to the vicinity of the bending shaft on the blocking rod side of the bending arm, The opening and closing arm and the bending arm are the main body The release mechanism is rotatably provided as one fulcrum at a predetermined position on the lane side with respect to the bending axis when the bending arm is at the normal position at the time of the stop instruction and on the blocking unit body side. Shaft end, a bearing holder provided as the other fulcrum at a predetermined position on the blocker body side on the side opposite to the lane of the opening / closing arm, and a release shaft having one end held at a rotatable shaft end and the other end reaching the bearing holder side A bearing that rotatably contacts the bearing holder to lock the release shaft, and a spring that contacts one end of the release shaft and fixes the other end to the opposite end of the release shaft on the opposite side of the shaft, and biases the release shaft toward the opposite side of the lane. Therefore, when the vehicle is lightly contacted with the blocking bar in the closed position and stopped by an impact that does not damage the vehicle or when the rotation angle of the blocking bar with respect to the brake bearing is within a predetermined angle, it is usually Closing the stop command state Similarly, the shaft end, which is one fulcrum of the release mechanism, is located closer to the blocker body than the bending axis of the bending arm, and the spring uses the bending axis as the fulcrum for the bending arm at the shaft end via the release shaft. A turning moment is applied to the anti-vehicle advance side, that is, the blocker body side, the blocking bar is maintained in the closed position, and the blocking bar extends to the lane side when the stop command is issued, while the vehicle is moved to the blocking bar. If the collision bar is strong or the vehicle passes by and the blocking bar is pushed in the vehicle traveling direction so that the rotation angle of the blocking bar becomes a predetermined angle or more, the opening / closing arm and the bending arm are bent at a predetermined angle, for example, 15 degrees. In the case of bending, the shaft end of the release mechanism moves from the bending shaft of the bending arm toward the anti-blocking device side, and the spring supports the bending shaft at the shaft end at the shaft end via the release shaft. As the vehicle traveling side, that is, anti-stopper Applying a rotational moment to the main body side, the blocking bar is bent and released in the direction of travel of the vehicle with the bending axis as the fulcrum along with the bending arm, so that the impact at the time of contact between the vehicle and the blocking bar is reduced, and It is possible to provide a blocking device that prevents a blocking rod from hitting the vehicle even when the vehicle that has entered the vehicle suddenly backs, thereby preventing the vehicle from being damaged.
[0027]
The bearing holder is made of stainless steel (or made of oil-impregnated synthetic resin), and has a shaft through hole having a predetermined dimension wider than the release shaft and a hemispherical concave surface capable of holding the bearing rotatably. (Or made of stainless steel) and formed into a hemispherical convex surface so that the surface in contact with the hemispherical concave surface of the bearing holder can be rotatably held. Does not rust well, and the release shaft does not rub against the bearing holder or bearing even if the release shaft slightly shakes at the time of the release, and even if there is a little dust, and the release shaft has good slidability with respect to the bearing. Can be provided with a highly reliable blocking device which can be slid smoothly by being urged by a spring.
[0028]
Further, since a dust-proof cover for covering the release shaft is provided on the opposite side of the spring, the release shaft is protected from dust and the spring cover for covering the spring is provided. It is possible to provide a blocking device having a small effect of preventing injury when the spring is extended and contracted.
[Brief description of the drawings]
FIG. 1 is a front view of a blocking device according to an embodiment of the present invention.
FIG. 2 is a top view of the blocking device.
FIG. 3 is a partial cross-sectional front view showing a configuration of a main part of the blocking device.
FIG. 4 is a partial cross-sectional front view showing the configuration of the main part.
FIG. 5 is a cross-sectional view showing a configuration of a brake bearing in a main part of the blocking device.
FIG. 6 is a sectional view taken along the line AA of the brake bearing of FIG. 5;
FIG. 7 is a cross-sectional view showing a configuration of a release mechanism in a main part of the blocking device.
FIG. 8 is a sectional view taken along the line BB of the release mechanism shown in FIG. 7;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Inhibiting device 2 Inhibiting device main body 21 Opening / closing shaft 3 Opening / closing part 31 Opening / closing arm 32 Bending shaft 33 Bending arm 34 Brake bearing 36 Release mechanism 36a Shaft end 36b Bearing holder 36b1 Bearing escape hole 36b2 Semispherical concave surface 36c Release shaft 36d Bearing 36e Spring 36f Dustproof cover 36g Spring cover 4 Blocking rod 5 Operation control unit 6 Island 7 Lane 8 Vehicle
