JP3779015B2

JP3779015B2 - Assist grip device for vehicles

Info

Publication number: JP3779015B2
Application number: JP01147297A
Authority: JP
Inventors: 精一佐藤; 利幸大嶋; 勉加藤
Original assignee: Piolax Inc
Current assignee: Piolax Inc
Priority date: 1996-01-26
Filing date: 1997-01-24
Publication date: 2006-05-24
Anticipated expiration: 2017-01-24
Also published as: JPH09263166A

Description

【０００１】
【発明の属する技術分野】
本発明は、乗物の壁部などの据付部に固定される一対のベース部材を有し、把持部と該把持部の両端から延びる脚部とにより略Ｕ字形状に形成されたグリップ部材を有し、前記各脚部を前記一対のベース部材に枢着して、前記グリップ部材を使用位置と格納位置とに揺動可能に構成した乗物用のアシストグリップ装置に関する。
【０００２】
【従来の技術】
従来の乗物用のアシストグリップ装置としては、例えば、特公平６−８４１４３号公報に開示されたものがある。
すなわち、グリップ体の一対の脚部が支承ブロックに支承軸により枢着され、一対の脚部には成形条材が渡され、支承軸は脚部を突き抜けて成形条材側へ延ばされ、延ばされた延設部が粘弾性プラスチック筒である成形体に圧入され、成形体が成形条材に固定されているものである。支承軸の延設部と成形体とが緩衝部材である摩擦ブレーキを構成しており、アシストグリップ使用後、グリップ体から手が離れて、使用位置から格納位置へ戻る際に、戻り速度を低減して、ゆっくり戻るようにして、品質感を高めるとともに、格納位置での衝突音の発生を防止している。
【０００３】
【発明が解決しようとする課題】
しかしながら、このような従来の乗物用のアシストグリップ装置では、摩擦ブレーキがグリップ体の脚部から突出した位置に装着され、装置全体が大型になり、また、成形体を固定するため、および、外観品質を高めるために成形条材が必要になり、コストが嵩むとともにこの点からも装置が大型になるという問題点があった。
本発明は、このような従来の問題点に着目してなされたもので、緩衝部材をグリップ本体の脚部に収容して、装置を小型にするとともに、部品点数を削減して、コストを低減することができ、また、組付性に優れ、さらに、応力集中を起こしにくくして強度を高いものに確保することができ、さらに、加工性に優れた乗物用のアシストグリップ装置を提供することを目的としている。
【０００４】
【課題を解決するための手段】
かかる目的を達成するための本発明の要旨とするところは、次の各項に記載された事項に存する。
１乗物の壁部などの据付部（１０）に固定される一対のベース部材（２０）を有し、把持部（４０）と該把持部（４０）の両端から延びる脚部（５０）とにより略Ｕ字形状に形成されたグリップ部材（３０）を有し、前記各脚部（５０）を前記一対のベース部材（２０）に枢着して、前記グリップ部材（３０）を使用位置と格納位置とに揺動可能に構成した乗物用のアシストグリップ装置であって、前記グリップ部材（３０）を使用位置から格納位置に戻す方向へ付勢する付勢手段（６０）と、前記グリップ部材（３０）が前記格納位置に戻る際の戻り速度を制御するためのダンパ部材（７０）とを備えたものにおいて、
前記グリップ部材（３０）の脚部（５０）と前記ベース部材（２０）との一方に一対の外嵌突起（５２）を形成し、前記脚部（５０）と前記ベース部材（２０）との他方に内嵌突起（２２）を形成し、前記一対の外嵌突起（５２）の間の隙間に前記内嵌突起（２２）を嵌入し、
前記一対の外嵌突起（５２）と前記内嵌突起（２２）とに同軸孔（２４，２５，５４，５５）をそれぞれ穿設し、該同軸孔（２４，２５，５４，５５）に、外筒（７１）と該外筒（７１）に内挿される内軸（７５）とを有して成るダンパ部材（７０）を挿入し、前記外筒（７１）を、挿入方向で手前側になる外嵌突起（５２）に対して回転不能に固結する一方、前記内嵌突起（２２）に対して回転可能に軸支し、かつ、前記内軸（７５）を、挿入方向で奥側になる外嵌突起（５２）に対して回転可能に軸支する一方、前記内嵌突起（２２）に対して回転不能に固結したことを特徴とする乗物用のアシストグリップ装置。
【０００５】
２乗物の壁部などの据付部（１０）に固定される一対のベース部材（２０）を有し、把持部（４０）と該把持部（４０）の両端から延びる脚部（５０）とにより略Ｕ字形状に形成されたグリップ部材（３０）を有し、前記各脚部（５０）を前記一対のベース部材（２０）に枢着して、前記グリップ部材（３０）を使用位置と格納位置とに揺動可能に構成した乗物用のアシストグリップ装置であって、前記グリップ部材（３０）を使用位置から格納位置に戻す方向へ付勢する付勢手段（６０）と、前記グリップ部材（３０）が前記格納位置に戻る際の戻り速度を制御するためのダンパ部材（７０）とを備えたものにおいて、
前記グリップ部材（３０）の脚部（５０）と前記ベース部材（２０）との一方に一対の外嵌突起（５２）を形成し、前記脚部（５０）と前記ベース部材（２０）との他方に内嵌突起（２２）を形成し、前記一対の外嵌突起（５２）の間の隙間に前記内嵌突起（２２）を嵌入し、
前記一対の外嵌突起（５２）と前記内嵌突起（２２）とに同軸孔（３２４，３２５，３５４，３５５）をそれぞれ穿設し、該同軸孔（３２４，３２５，３５４，３５５）に、外筒（３７１）と該外筒（３７１）に内挿される内軸（３７５）とを有して成るダンパ部材（３７０）を挿入し、前記外筒（３７１）を前記内嵌突起（２２）に対して回転不能に固結する一方、前記内軸（３７５）を挿入方向で手前側の外嵌突起（５２）の同軸孔（３５４）に貫通させ、かつ、前記挿入方向で奥側の外嵌突起（５２）の同軸孔（３５５）に挿入させて前記外嵌突起（５２）に対して回転不能に固結したことを特徴とする乗物用のアシストグリップ装置。
【０００６】
３前記内嵌突起（２２）は、前記ダンパ部材（３７０）が前記同軸孔（３２４，３２５，３５４，３５５）に挿入する際に、前記外筒（３７１）が当接して所定の挿入位置に位置決めされるダンパ位置決め部（３２６）を有し、
前記外筒（３７１）は、前記内軸（３７５）が前記外筒（３７１）に内挿する際に、前記内軸（３７５）が当接して所定の内挿位置に位置決めされる内軸位置決め部（３７３）を有していることを特徴とする２項記載の乗物用のアシストグリップ装置。
【０００７】
４前記ダンパ部材（７０）の外筒（７１）は、前記内軸（７５）が内挿される収容孔（７２）を有し、
前記内軸（７５）の先端は、前記ダンパ部材（７０）の挿入時に外筒（７１）と内軸（７５）とが一体的に挿入されるべく、前記収容孔（７２）の孔底（７３）に突き当てられることを特徴とする１、２または３項記載の乗物用のアシストグリップ装置。
５前記内軸（７５）の基端部は、前記ダンパ部材（７０）の挿入時に前記内嵌突起（２２）側に突き当たってダンパ部材（７０）の軸方向の位置決めをするための拡径フランジ（７６）を有していることを特徴とする１または４項記載の乗物用のアシストグリップ装置。
６前記内軸（１７５）の基端部は、拡径されて、前記内嵌突起（２２）から挿入方向で奥側になる外嵌突起（１５２）に渡される補強部（１７８）を有していることを特徴とする１、４または５項記載の乗物用のアシストグリップ装置。
【０００８】
７前記内軸（７５）の基端部は、前記拡径フランジ（７６）から離間した位置に、シールリング（８０）が嵌め込まれるシールリング溝（７９）を有していることを特徴とする１、４、５または６項記載の乗物用のアシストグリップ装置。
８前記外筒（２７１）の収容孔（２７２）の溝口部は、シールリング（８０）が嵌め込まれるシールリング溝（２７９）を有し、
シールリング（８０）は、前記シールリング溝（２７９）と前記内軸（７５）の拡径フランジ（７６）とに保持されていることを特徴とする１、４、５、６または７項記載の乗物用のアシストグリップ装置。
【０００９】
９前記一対のベース部材（２０）の一方に前記ダンパ部材（７０）を装着し、他方のベース部材（２０）に、付勢手段（６０）を装着したことを特徴とする１、２、３、４、５、６、７または８項記載の乗物用のアシストグリップ装置。１０前記外筒（７１）の収容孔（７２）は、前記内嵌突起（２２）の範囲に対応する部分であって、前記外嵌突起（５２）へは至らぬ範囲に形成されていることを特徴とする１、４、５、６、７、８または９項記載の乗物用のアシストグリップ装置。
【００１０】
次に、前記各項に記載された発明の作用について説明する。
前記グリップ部材（３０）の脚部（５０）と前記ベース部材（２０）との一方に形成された一対の外嵌突起（５２）の間の隙間には、前記脚部（５０）と前記ベース部材（２０）との他方に形成された内嵌突起（２２）が嵌入されている。前記一対の外嵌突起（５２）と前記内嵌突起（２２）とに穿設された同軸孔（２４，２５，５４，５５）には、ダンパ部材（７０）が挿入されている。同軸孔（２４，２５，５４，５５）にダンパ部材（７０）が挿入していくと、ダンパ部材（７０）の外筒（７１）が挿入方向で手前側になる外嵌突起（５２）に対して回転不能に固結される一方、前記内嵌突起（２２）に対して回転可能に軸支され、かつ、ダンパ部材（７０）の内軸（７５）が、挿入方向で奥側になる外嵌突起（５２）に対して回転可能に軸支される一方、前記内嵌突起（２２）に対して回転不能に固結される。それにより、特別な固定手段を施す必要がなく、組付性を向上することができる。それにより、ダンパ部材（７０）が、グリップ部材（３０）の脚部（５０）に収容された形になり、装置が小型になり、また、ダンパ部材（７０）を支持する特別な部材を設ける必要がなくなる。
【００１１】
前述のように組み付けられた装置においては、ダンパ部材（７０）の外筒（７１）と内軸（７５）とが相対的に回転すると、グリップ部材（３０）が使用位置と格納位置とに揺動可能になる。グリップ部材（３０）を使用位置に揺動するには、付勢手段（６０）の付勢力に抗して、把持部（４０）を引き起こすようにすれば良い。
グリップ部材（３０）が使用位置にあるとき、把持部（４０）から手を離すと、付勢手段（６０）の付勢力でグリップ部材（３０）は、使用位置から格納位置に戻るが、ダンパ部材（７０）の外筒（７１）と内軸（７５）とが相対回転することで緩衝作用が生じ、グリップ部材（３０）の戻り時の戻り速度が低減される。
【００１２】
請求項２記載の乗物用のアシストグリップ装置では、
前記外筒（３７１）を前記内嵌突起（２２）に対して回転不能に固結する一方、前記内軸（３７５）を挿入方向で手前側の外嵌突起（５２）の同軸孔（３５４）に貫通させ、かつ、前記挿入方向で奥側の外嵌突起（５２）の同軸孔（３５５）に挿入させて前記外嵌突起（５２）に対して回転不能に固結したので、前記内軸（３７５）が両持ちの形で一対の外嵌突起（５２）に支持され、グリップ部材（３０）の使用時に、内嵌突起（２２）および外筒（３７１）を介して、内軸（３７５）に大きな力がかかると、内軸（３７５）が撓んだり、ねじれたりして、内軸（３７５）に大きな曲げモーメントやねじりモーメントが生じ、内軸（３７５）の両端部を支持する一対の外嵌突起（５２）にそれらのモーメントに対する大きな反力が生じる。この場合にも、大きな曲げモーメント、ねじりモーメントおよび大きな反力に、内軸（３７５）および一対の外嵌突起（５２）が十分に耐え得るダンパ部材（３７０）の支持構造にすることができる。また、内軸（３７５）に生じるねじれモーメントに対しても十分に耐え得るダンパ部材（３７０）の支持構造にすることができる。
さらに、このようなダンパ部材（３７０）の支持構造では、内軸（３７５）を金属性のシャフトにより形成し、剛性が高いものにしておけば、外筒（３７１）は、比較的剛性が低くても済むので、外筒（３７１）を例えば樹脂性の材料により形成することができる。
【００１３】
請求項３記載の乗物用のアシストグリップ装置では、
前記内嵌突起（２２）は、前記ダンパ部材（３７０）が前記同軸孔（３２４，３２５，３５４，３５５）に挿入する際に、前記外筒（３７１）が当接して所定の挿入位置に位置決めされるダンパ位置決め部（３２６）を有し、前記外筒（３７１）は、前記内軸（３７５）が前記外筒（３７１）に内挿する際に、前記内軸（３７５）が当接して所定の内挿位置に位置決めされる内軸位置決め部（３７３）を有しているので、ダンパ部材（３７０）を同軸孔（３２４，３２５，３５４，３５５）に挿入していけば、外筒（３７１）がダンパ位置決め部（３２６）に突き当たるとともに、内軸（３７５）が内軸位置決め部（３７３）に突き当たるから、そのままダンパ部材（３７０）の外筒（３７１）および内軸（３７５）の軸方向の位置決めができ、組付性を向上することができる。
【００１４】
請求項４記載の乗物用のアシストグリップ装置では、
前記ダンパ部材（７０）の外筒（７１）は、前記内軸（７５）が内挿される収容孔（７２）を有し、前記内軸（７５）の先端は、前記ダンパ部材（７０）の挿入時に外筒（７１）と内軸（７５）とが一体的に挿入されるべく、前記収容孔（７２）の孔底（７３）に突き当てられるので、ダンパ部材（７０）装着時にダンパ部材（７０）の外筒（７１）と内軸（７５）とを一体的に取り扱うことができ、組付性を向上することができる。
また、グリップ部材（３０）が使用位置と格納位置とに揺動するときに、内軸（７５）の先端部が外筒（７１）の収容孔（７２）の孔底（７３）を擦るようになるが、回転中心である軸心の周りを擦っているため、大きな摩擦抵抗を生じることがなく、操作性に悪い影響を与えることなく、また、内軸（７５）などの強度上の問題を引き起こすことがない。
【００１５】
請求項５記載の乗物用のアシストグリップ装置では、
前記内軸（７５）の基端部は、前記ダンパ部材（７０）の挿入時に前記内嵌突起（２２）側に突き当たってダンパ部材（７０）の軸方向の位置決めをするための拡径フランジ（７６）を有しているので、ダンパ部材（７０）を挿入していけば、拡径フランジ（７６）が内嵌突起（２２）側に突き当たって、そのままダンパ部材（７０）の軸方向の位置決めができ、組付性を向上することができる。
【００１６】
請求項６記載の乗物用のアシストグリップ装置では、
前記内軸（１７５）の基端部は、拡径されて、前記内嵌突起（２２）から挿入方向で奥側になる外嵌突起（５２）に渡される補強部（１７８）を有しているので、例えば、グリップ部材（３０）の把持部（４０）に過大な力がかかって、内嵌突起（２２）と外嵌突起（５２）とに掛け渡される内軸（１７５）に大きな剪断力が作用しても、その剪断力を補強部（１７８）で十分に支えることができる。
請求項７記載の乗物用のアシストグリップ装置では、
前記内軸（７５）の基端部は、前記拡径フランジ（７６）から離間した位置に、シールリング（８０）が嵌め込まれるシールリング溝（７９）を有しているので、内軸（７５）の基端部に大きな力がかかっても、シールリング溝（７９）に応力集中が生じにくくなり、特別な補強部材を要することなく、強度性を高めることができる。
【００１７】
請求項８記載の乗物用のアシストグリップ装置では、
前記外筒（２７１）の収容孔（２７２）の溝口部は、シールリング（８０）が嵌め込まれるシールリング溝（２７９）を有し、シールリング（８０）は、前記シールリング溝（２７９）と前記内軸（７５）の拡径フランジ（７６）とに保持されているので、外筒（２７１）より軸径の細い内軸（７５）に、さらに軸径を細くするシールリング溝を設ける必要がなく、強度を高いものに維持することができる。
【００１８】
請求項９記載の乗物用のアシストグリップ装置では、
前記一対のベース部材（２０）の一方に前記ダンパ部材（７０）を装着し、他方のベース部材（２０）に、付勢手段（６０）を装着したので、ダンパ部材（７０）と付勢手段（６０）とを、一対の脚部（５０）にそれぞれ収容した形になり、装置全体を小型にすることができる。
また、ダンパ部材（７０）と付勢手段（６０）とをセットとして、各脚部（５０）にそれぞれを設ける場合に比して、ダンパ部材（７０）や付勢手段（６０）を大型化して設けることができるので、ダンパ部材（７０）の外筒（７１）や内軸（７５）の強度をより高めることができるとともに、ダンパ部材（７０）のダンパ力や付勢手段（６０）の付勢力をより高めることができる。
【００１９】
請求項１０記載の乗物用のアシストグリップ装置では、
前記外筒（７１）の収容孔（７２）は、前記内嵌突起（２２）の範囲に対応する部分であって、前記外嵌突起（５２）へは至らぬ範囲に形成されているので、例えば、グリップ部材（３０）の把持部（４０）に過大な力がかかって、内嵌突起（２２）と外嵌突起（５２）とに掛け渡される内軸（１７５）に大きな剪断力が作用しても、その剪断力がかかる部位の断面積が小さくなく、適切な大きさに確保されているから、その剪断力に十分に耐えることができる。
【００２０】
【発明の実施の形態】
以下、図面に基づき本発明の実施の各種形態を説明する。
図１〜図３は本発明の第１の実施の形態を示している。
図２に示すように、本装置は、乗物の壁部などの据付部１０に固定されるものであり、一対のベース部材２０とグリップ部材３０とを有している。
【００２１】
各ベース部材２０は、樹脂材により基部２１と内嵌突起２２とを一体的に成形して成る。基部２１は固定用のねじの頭部が出っ張らないように溝断面形状に形成されており、内嵌突起２２は、一対の支持突起２３を有している。
【００２２】
グリップ部材３０は、把持部４０と該把持部４０の両端から延びる脚部５０とにより略Ｕ字形状に形成されている。各脚部５０は前記一対のベース部材２０に枢着されており、それにより、グリップ部材は、利用者から乗物の室内側に起立した使用位置と、据付部１０側に倒伏した格納位置とに揺動可能に成っている。一方のベース部材２０の内嵌突起２２には、その付勢端を脚部５０に掛けたコイルばねである付勢手段６０が内装されている。付勢手段６０により、グリップ部材３０を使用位置から格納位置に戻す方向へ付勢されている。
【００２３】
図１および図２に示すように、他方のベース部材２０側には、グリップ部材３０が前記格納位置に戻る際に、その戻り速度を制御するための粘性ダンパであるダンパ部材７０が装備されている。他方のベース部材２０に対応する脚部５０には、その孔底を薄肉にして成る収納溝が形成されている。収納溝の両側溝壁が一対の外嵌突起５２に成っている。一対の外嵌突起５２の間の隙間には、ベース部材２０の基部２１および内嵌突起２２が嵌入可能に成っている。
一対の外嵌突起５２と内嵌突起２２の一対の支持突起２３とには、同軸孔２４，２５，５４，５５がそれぞれ穿設されている。同軸孔２４，２５，５４，５５にはダンパ部材７０が挿入されている。ダンパ部材７０は、外筒７１と該外筒７１の収容孔７２に内挿される内軸７５とを有している。収容孔７２内にはオイルが充填されている。ダンパ部材７０はフリクション型のものであってもよい。
【００２４】
外筒７１の基端部は、ローレット切りしたローレット部７４に成っていて、ローレット部７４の外径は、外筒の一般径より僅かに大き目になっている。ローレット部７４に限らず、例えば、外筒７１の基端部に回り止め用のキ−部を形成してもよい。形成外筒７１のローレット部７４は、挿入方向で手前側になる外嵌突起５２の同軸孔５４に回転不能に固結されている。一方、外筒７１の一般筒部は内嵌突起２２の一方の支持突起２３の同軸孔２４に回転可能に軸支されている。図１においては、外筒７１の一般筒部と支持突起２３の同軸孔２４との隙間を強調して示している。
内軸７５は、軸方向の中間部に拡径フランジ７６とローレット部７７とを有している。内軸７５の一端側が外筒７１の収容孔７２に内挿され、外筒７１の他端部７８が、挿入方向で奥側になる外嵌突起５２の同軸孔５５に回転可能に軸支されている。内軸７５の拡径フランジ７６は、ダンパ部材７０の挿入時に内嵌突起２２の他方の支持突起２３の凹部２６に突き当たってダンパ部材７０の軸方向の位置決めに成っている。外筒７１のローレット部７７が、内嵌突起２２の他方の支持突起２３の同軸孔２４に回転不能に固結されている。
【００２５】
内軸７５の先端は、外筒７１の収容孔７２の孔底７３に突き当てられている。それにより、ダンパ部材７０の挿入時に外筒７１と内軸７５とが一体的に挿入可能になっている。
内軸７５の基端部には、シールリング８０を嵌め込むためのシールリング溝７９が形成されている。シールリング溝７９は、応力集中が生じにくい程度に拡径フランジ７６から離間した位置に形成されている。図３に示すように、外筒２７１の収容孔２７２の溝口部に、シールリング溝２７９を形成してもよい。この場合、シールリング８０は、シールリング溝２７９と内軸７５の拡径フランジ７６とに保持されている。
【００２６】
次に、本発明の実施の形態の作用について説明する。
グリップ部材３０の脚部５０の一対の外嵌突起５２の間の隙間には、ベース部材２０の内嵌突起２２が嵌入されている。
一対の外嵌突起５２と内嵌突起２２とにそれぞれ穿設された同軸孔２４，２５，５４，５５には、ダンパ部材７０が挿着されている。同軸孔２４，２５，５４，５５にダンパ部材７０が挿入していくと、ダンパ部材７０の外筒７１のローレット部７４が挿入方向で手前側になる外嵌突起５２の同軸孔５４に回転不能に固結され、外筒７１の一般径部が内嵌突起２２の同軸孔２４に回転可能に軸支される。また、ダンパ部材７０の内軸７５が、挿入方向で奥側になる外嵌突起５２の同軸孔５５に対して回転可能に軸支され、内軸７５のローレット部７７が内嵌突起２２の同軸孔２５に回転不能に固結される。それにより、止めねじなどの特別な固定手段を施す必要がなく、組付性を向上することができる。
【００２７】
また、内軸７５の先端が収容孔７２の孔底７３に突き当てられているので、ダンパ部材７０の挿入時に外筒７１と内軸７５とが一体的に挿入されるようになり、ダンパ部材７０装着時にダンパ部材７０の外筒７１と内軸７５とを一体的に取り扱うことができ、この点からも組付性を向上することができる。
さらに、内軸７５の基端部には拡径フランジ７６が形成されているので、ダンパ部材７０の挿入時に、拡径フランジ７６が内嵌突起２２の他方の支持突起２３の凹部２６に突き当たることにより、ダンパ部材７０の軸方向の位置決めをすることができ、この点からも組付性を向上することができる。
【００２８】
さらに、ダンパ部材７０全体は、グリップ部材３０の脚部５０とベース部材２０との枢着部に収容された形になり、装置全体が小型になり、また、ダンパ部材７０を支持したり、覆ったりする別部材を設ける必要がなくなる。
さらに、一対のベース部材２０の一方側にダンパ部材７０を装着し、他方のベース部材２０側に、付勢手段６０を装着したので、ダンパ部材７０と付勢手段６０とを、一対の脚部５０が枢着されている部位にそれぞれ収容した形になり、装置全体を小型にすることができる。
【００２９】
さらに、外筒７１および内軸７５共に、丸軸素材の外径を軸方向で適度に大小させて成形することができ、ローレット部７４，７７の成形も通常の技術をもって行なうことができ、特別に困難な加工を施す必要がない。
このように組付けられたものにおいて、ダンパ部材７０の外筒７１と内軸７５とが相対的に回転すると、グリップ部材３０が使用位置と格納位置とに揺動可能になる。グリップ部材３０を使用位置に揺動するには、付勢手段６０の付勢力に抗して、把持部４０を引き起こすようにすれば良い。
【００３０】
グリップ部材３０が使用位置にあるとき、把持部４０から例えば手を離すと、付勢手段６０の付勢力でグリップ部材３０は、使用位置から格納位置に戻るが、ダンパ部材７０の外筒７１の収容孔７２内で内軸７５が相対回転する際に、収容孔７２内のオイルを動かす必要があることから緩衝作用が生じ、グリップ部材３０の戻り時の戻り速度は大幅に低減され、例えばグリップ部材３０が据付部１０に高速で衝突するようなことが防止される。
また、グリップ部材３０が使用位置と格納位置とに揺動するときに、内軸７５の先端部が外筒７１の収容孔７２の孔底７３を擦るようになるが、回転中心である軸心の周りを擦っているため、大きな摩擦抵抗を生じることがなく、操作性に悪い影響を与えることなく、また、内軸７５などの強度上の問題を引き起こすことがない。
脚部５０を介してダンパ部材７０に過大な荷重がかかった場合に、内軸７５において最も外径が大きな拡径フランジ７６近傍にあって、かつ、最も外径が小さなシールリング溝７９付近に集中応力が生じ易くなるが、シールリング溝７９は拡径フランジ７６から十分に離間した位置に形成されていて、応力集中が生じにくいように配置されており、内軸７５の基端部に大きな力がかかっても、シールリング溝７９に応力集中が生じにくくなり、特別な補強部材を要することはない。
【００３１】
図４は、本発明の第２の実施の形態を示している。
本第２の実施の形態においては第１の実施の形態と同じ構成については、同一の番号を付し、その説明を省略する。
内軸１７５の基端部には補強部１７８が形成されている。補強部１７８は、外筒２７１内に挿入されている内軸の一般径部より拡径されて、内嵌突起２２の他方の支持突起２３から挿入方向で奥側になる外嵌突起１５２に渡されている。補強部１７８の一部は、支持突起２３の同軸孔２５に回転不能に嵌合するローレット部になっている。
【００３２】
このような構成において、例えば、グリップ部材３０の把持部４０に過大な力がかかって、内嵌突起２２と外嵌突起５２とに掛け渡される内軸１７５に大きな剪断力が作用すると、補強部１７８の径が大きいので、補強部１７８は、その剪断力を十分に支えることができる。
【００３３】
図５〜図８は、本発明の第３の実施の形態を示している。
本第３の実施の形態においても、第１の実施の形態と同じ構成については、同一の番号を付し、その説明を省略する。
【００３４】
本実施の形態では、ダンパ部材３７０は、樹脂製の外筒３７１と金属製の内軸３７５とから成る。外筒３７１は、挿入方向で基端側に相当する大口径の収容孔３７２および挿入方向で先端側に相当する小口径部３７１ｂから構成されている。外筒３７１の内壁には大口径の収容孔３７２と小口径部３７１ｂとの境に、内段差部である内軸位置決め部３７３が形成され、外筒３７１の外壁にはローレットを施したローレット部３７４が形成されている。ローレット部３７４がベース部材２０の挿入方向で手前側の同軸孔３２４の孔壁に回転不能に固結されている。また、外筒３７１の外壁には内軸位置決め部３７３に対応して、外段差部３７６が形成されている。一方、内軸３７５は、挿入方向で基端側の頭部であるローレット部３７７、大径部３７５ａ、および挿入方向で先端側の小径部３７８から構成されている。
【００３５】
大径部３７５ａが収容孔３７２に内挿され、小径部３７８が小口径部３７１ｂに内挿されている。また、ローレット部３７７がグリップ部材３０の脚部５０の挿入方向で手前側の同軸孔３５４の孔壁に回転不能に固結されている。内軸３７５の小径部３７８が、グリップ部材３０の脚部５０の挿入方向で奥側の同軸孔３５５の孔壁に挿入されている。すなわち、内軸３７５は、脚部５０の手前側の外嵌突起５２の同軸孔３５４に貫通して、奥側の外嵌突起５２に達し、その奥側の外嵌突起５２の同軸孔３５５に挿入している。それにより、内軸３７５が両持ちの形で一対の外嵌突起５２に支持されることになり、グリップ部材３０の使用時に、内嵌突起２２および外筒３７１を介して、内軸３７５に大きな力がかかり、内軸３７５に大きな曲げモーメントやねじりモーメントが生じ、一対の外嵌突起５２にそれらのモーメントに対する大きな反力が生じても、内軸３７５および一対の外嵌突起５２がそれらのモーメント等や反力に十分に耐えることができ、アシストグリップ装置の剛性を高めることができる。
【００３６】
外筒３７１の内軸位置決め部３７３は、内軸３７５を内挿した際に、大径部３７５ａと小径部３７８との境に形成された段部３７５ｂが当接して、内軸３７５を所定の内挿位置に位置きめするためのものである。また、ベース部材２０の挿入方向で奥側の同軸孔３２５の孔縁に相当するダンパ位置決め部３２６は、外筒３７１の外段差部３７６が当接して、外筒３７１、しいてはダンパ部材３７０を所定位置に位置決めするためのものである。それにより、ダンパ部材３７０を挿入していけば、外筒３７１の外段差部３７６がダンパ位置決め部３２６に突き当たるとともに、内軸３７５の段部３７５ｂが内軸位置決め部３７３に突き当たるので、挿入作業と同時に、ダンパ部材３７０の外筒３７１および内軸３７５の軸方向の位置決めができ、組付性を向上することができる。
【００３７】
内軸３７５の大径部３７５ａには、軸方向で相互に離間して一対のシールリング溝３７９が形成されている。一対のシールリング溝３７９には、大径部３７５ａと収容孔３７２との間の隙間に充填されたダンパ油を密閉するためのシールリング３８０がそれぞれ嵌込まれている。
内嵌突起２２は、その両側端部に同軸孔３２４，３２５が穿設されているが、内嵌突起２２の両側端部の間の中間部と、外筒３７１との間には空隙が形成されている。当該空隙が形成されることにより、内嵌突起２２の同軸孔３２４，３２５の孔精度および外筒３７１の両端部の外径精度などの主要部分の精度を高めていけば、全体的な部品精度が高まり、組付精度などのバラツキが抑えられ、その結果、ダンパ特性を安定させることができる。
【００３８】
また、先に述べたように、内軸３７５は、挿入方向で基端側であるそのローレット部３７７が挿入方向で手前側の外嵌突起５２の同軸孔３７７に固く嵌合して固結され、同じように、外筒３７１は、挿入方向で基端側であるローレット部３７４が挿入方向で手前側の内嵌突起２２の同軸孔３２４に固く嵌合して固結される構造である。
それにより、内軸３７５は、挿入方向で先端側に相当する部分（小径部３７８などを含む部分）をそのローレット部３７７より細径にすることができ、同じように、外筒３７１は、挿入方向で先端側に相当する部分をそのローレット部３７４より細径にすることができ、挿入荷重が低く抑えられ、組付性が良く、かつ回転保持力が高い構造にすることができる。
【００３９】
ベース部材２０の基部２１の凹部がキャップ部材３２７で外部から覆われている。グリップ部材３０の脚部５２には、基部２１に当接してグリップ部材３０を使用位置に拘束する使用時当接部３５７と、キャップ部材３２７に当接してグリップ部材３０を格納位置に拘束する格納時当接部３５８とが形成されている。
【００４０】
【発明の効果】
本発明にかかる乗物用のアシストグリップ装置によれば、緩衝部材をグリップ本体の脚部に収容して、装置を小型にするとともに、部品点数を削減して、コストを低減することができる。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態を示す乗物用のアシストグリップ装置の要部断面図である。
【図２】本発明の第１の実施の形態を示す乗物用のアシストグリップ装置の斜視図である。
【図３】本発明の第１の実施の形態を示す乗物用のアシストグリップ装置の要部断面図である。
【図４】本発明の第２の実施の形態を示す乗物用のアシストグリップ装置の要部断面図である。
【図５】本発明の第３の実施の形態を示す乗物用のアシストグリップ装置の要部斜視図である。
【図６】本発明の第３の実施の形態を示す乗物用のアシストグリップ装置の斜視図である。
【図７】本発明の第３の実施の形態を示す乗物用のアシストグリップ装置の作用説明図である。
【図８】本発明の第３の実施の形態を示す乗物用のアシストグリップ装置の要部断面図である。
【符号の説明】
１０…据付部
２０…ベース部材
２１…基部
２２…内嵌突起
２３…支持突起
２４，２５…同軸孔
２６…凹部
３０…グリップ部材
４０…把持部
５０…脚部
５２…外嵌突起
５４，５５…同軸孔
６０…付勢手段
７０…ダンパ部材
７１…外筒
７２…収容孔
７３…収容孔の孔底
７４…ローレット部
７５…内軸
７６…拡径フランジ
７７…ローレット部
７８…内軸の他端部
７９…シールリング溝
８０…シールリング
１７８…補強部
３２４，３２５，３５４，３５５…同軸孔
３７０…ダンパ部材
３７１…外筒
３７５…内軸[0001]
BACKGROUND OF THE INVENTION
The present invention has a pair of base members fixed to an installation portion such as a wall portion of a vehicle, and has a grip member formed in a substantially U shape by a grip portion and legs extending from both ends of the grip portion. Further, the present invention relates to an assist grip device for a vehicle in which each leg portion is pivotally attached to the pair of base members so that the grip member can swing between a use position and a storage position.
[0002]
[Prior art]
A conventional assist grip device for vehicles is disclosed in, for example, Japanese Patent Publication No. 6-84143.
That is, the pair of leg portions of the grip body are pivotally attached to the support block by the support shaft, the formed strip material is passed to the pair of leg portions, the support shaft extends through the leg portion to the molded strip material side, The extended extended portion is press-fitted into a molded body that is a viscoelastic plastic cylinder, and the molded body is fixed to the molded strip material. The extension part of the support shaft and the molded body constitute a friction brake that acts as a buffer member. After using the assist grip, when the hand leaves the grip body and returns from the use position to the retracted position, the return speed is reduced. Thus, it slowly returns to enhance the quality and prevent the occurrence of collision noise at the storage position.
[0003]
[Problems to be solved by the invention]
However, in such a conventional assist grip device for a vehicle, the friction brake is mounted at a position protruding from the leg portion of the grip body, the entire device becomes large, and the molded body is fixed, and the appearance In order to improve the quality, a forming strip is required, which increases the cost and also causes a problem that the apparatus becomes large.
The present invention has been made paying attention to such a conventional problem. The cushioning member is accommodated in the leg portion of the grip body to reduce the size of the device, reduce the number of parts, and reduce the cost. Providing an assist grip device for a vehicle that is excellent in assembling property, is capable of ensuring high strength by preventing stress concentration, and has excellent workability. It is an object.
[0004]
[Means for Solving the Problems]
The gist of the present invention for achieving this object resides in the matters described in the following sections.
1 It has a pair of base member (20) fixed to installation parts (10), such as a wall part of a vehicle, and includes a grip part (40) and leg parts (50) extended from both ends of the grip part (40). A grip member (30) formed in a substantially U-shape is provided, and each leg portion (50) is pivotally attached to the pair of base members (20) so that the grip member (30) is stored in a use position. An assist grip device for a vehicle configured to be swingable to a position, wherein the grip member (30) is urged in a direction to return the grip member (30) from a use position to a retracted position, and the grip member ( 30) comprising a damper member (70) for controlling the return speed when returning to the storage position,
A pair of external fitting protrusions (52) is formed on one of the leg part (50) and the base member (20) of the grip member (30), and the leg part (50) and the base member (20) An inner fitting protrusion (22) is formed on the other, and the inner fitting protrusion (22) is inserted into a gap between the pair of outer fitting protrusions (52),
Coaxial holes (24, 25, 54, 55) are formed in the pair of outer fitting protrusions (52) and the inner fitting protrusion (22), respectively, and the coaxial holes (24, 25, 54, 55) A damper member (70) having an outer cylinder (71) and an inner shaft (75) inserted into the outer cylinder (71) is inserted, and the outer cylinder (71) is moved forward in the insertion direction. The outer fitting protrusion (52) is fixed in a non-rotatable manner, while being rotatably supported with respect to the inner fitting protrusion (22), and the inner shaft (75) is disposed in the back in the insertion direction. An assist grip device for a vehicle, wherein the assist grip device is rotatably supported with respect to the outer fitting protrusion (52) and is non-rotatably solidified with respect to the inner fitting protrusion (22).
[0005]
2 It has a pair of base member (20) fixed to installation parts (10), such as a wall part of a vehicle, and includes a grip part (40) and a leg part (50) extended from both ends of the grip part (40). A grip member (30) formed in a substantially U-shape is provided, and each leg portion (50) is pivotally attached to the pair of base members (20) so that the grip member (30) is stored in a use position. An assist grip device for a vehicle configured to be swingable to a position, wherein the grip member (30) is urged in a direction to return the grip member (30) from a use position to a retracted position, and the grip member ( 30) comprising a damper member (70) for controlling the return speed when returning to the storage position,
A pair of external fitting protrusions (52) is formed on one of the leg part (50) and the base member (20) of the grip member (30), and the leg part (50) and the base member (20) An inner fitting protrusion (22) is formed on the other, and the inner fitting protrusion (22) is inserted into a gap between the pair of outer fitting protrusions (52),
Coaxial holes (324, 325, 354, 355) are respectively drilled in the pair of outer fitting protrusions (52) and the inner fitting protrusion (22), and the coaxial holes (324, 325, 354, 355) are respectively formed. A damper member (370) having an outer cylinder (371) and an inner shaft (375) inserted into the outer cylinder (371) is inserted, and the outer cylinder (371) is inserted into the inner fitting protrusion (22). The inner shaft (375) passes through the coaxial hole (354) of the outer fitting projection (52) in the insertion direction in the insertion direction, and the outer side in the insertion direction. An assist grip device for a vehicle, which is inserted into the coaxial hole (355) of the fitting protrusion (52) and is non-rotatably fixed to the outer fitting protrusion (52).
[0006]
3. When the damper member (370) is inserted into the coaxial hole (324, 325, 354, 355), the inner fitting protrusion (22) is brought into contact with the outer cylinder (371) to be in a predetermined insertion position. A damper positioning portion (326) to be positioned;
When the inner shaft (375) is inserted into the outer tube (371), the outer tube (371) is positioned at a predetermined insertion position by contacting the inner shaft (375). 3. The vehicle assist grip device according to claim 2, further comprising a portion (373).
[0007]
4 The outer cylinder (71) of the damper member (70) has a receiving hole (72) into which the inner shaft (75) is inserted,
The tip of the inner shaft (75) is formed at the bottom of the accommodation hole (72) so that the outer cylinder (71) and the inner shaft (75) can be inserted integrally when the damper member (70) is inserted. 73) The vehicle assist grip device according to any one of claims 1, 2, and 3,
5 A diameter-enlarging flange for positioning the damper member (70) in the axial direction by abutting the proximal end portion of the inner shaft (75) against the inner fitting protrusion (22) when the damper member (70) is inserted. The vehicle assist grip device according to claim 1, wherein the assist grip device for a vehicle according to claim 1 is provided.
6 The proximal end portion of the inner shaft (175) has a reinforcing portion (178) that is expanded in diameter and is passed from the inner fitting projection (22) to the outer fitting projection (152) that becomes the back side in the insertion direction. The assist grip device for a vehicle according to claim 1, 4 or 5, wherein
[0008]
7 The base end of the inner shaft (75) has a seal ring groove (79) into which a seal ring (80) is fitted at a position spaced from the diameter-enlarged flange (76). The assist grip device for a vehicle according to claim 1, 4, 5 or 6.
8 The groove portion of the accommodation hole (272) of the outer cylinder (271) has a seal ring groove (279) into which the seal ring (80) is fitted,
The seal ring (80) is held by the seal ring groove (279) and the diameter-enlarging flange (76) of the inner shaft (75). Assist grip device for vehicles.
[0009]
9. The damper member (70) is attached to one of the pair of base members (20), and the biasing means (60) is attached to the other base member (20). 9. An assist grip device for a vehicle according to claim 4, 5, 6, 7, or 8. 10. The accommodation hole (72) of the outer cylinder (71) is a portion corresponding to the range of the inner fitting protrusion (22) and is formed in a range not reaching the outer fitting protrusion (52). The assist grip device for a vehicle according to claim 1, 4, 5, 6, 7, 8, or 9.
[0010]
Next, the operation of the invention described in each of the above items will be described.
In the gap between a pair of external fitting protrusions (52) formed on one of the leg (50) of the grip member (30) and the base member (20), the leg (50) and the base An internal fitting protrusion (22) formed on the other side of the member (20) is inserted. A damper member (70) is inserted into the coaxial holes (24, 25, 54, 55) drilled in the pair of outer fitting protrusions (52) and the inner fitting protrusion (22). When the damper member (70) is inserted into the coaxial holes (24, 25, 54, 55), the outer cylinder (71) of the damper member (70) is inserted into the outer fitting protrusion (52) that is on the near side in the insertion direction. On the other hand, it is fixed in a non-rotatable manner, and is rotatably supported with respect to the internal fitting protrusion (22), and the inner shaft (75) of the damper member (70) is located in the back in the insertion direction. While being rotatably supported with respect to the external fitting protrusion (52), it is solidified non-rotatably with respect to the internal fitting protrusion (22). Thereby, it is not necessary to apply special fixing means, and the assembling property can be improved. As a result, the damper member (70) is accommodated in the leg portion (50) of the grip member (30), the apparatus is reduced in size, and a special member for supporting the damper member (70) is provided. There is no need.
[0011]
In the apparatus assembled as described above, when the outer cylinder (71) of the damper member (70) and the inner shaft (75) rotate relatively, the grip member (30) swings between the use position and the storage position. It becomes possible to move. In order to swing the grip member (30) to the use position, the grip portion (40) may be caused against the biasing force of the biasing means (60).
When the grip member (30) is in the use position, when the hand is released from the grip portion (40), the grip member (30) returns from the use position to the retracted position by the biasing force of the biasing means (60). The outer cylinder (71) of the member (70) and the inner shaft (75) rotate relative to each other so that a buffering action is generated, and the return speed when the grip member (30) returns is reduced.
[0012]
In the assist grip device for a vehicle according to claim 2,
The outer cylinder (371) is fixed to the inner fitting protrusion (22) in a non-rotatable manner, while the inner shaft (375) is coaxially inserted into the outer fitting protrusion (52) in the insertion direction (354). And is inserted into the coaxial hole (355) of the outer fitting protrusion (52) on the back side in the insertion direction and fixed to the outer fitting protrusion (52) so as not to rotate. (375) is supported by the pair of outer fitting protrusions (52) in a form of both ends, and when the grip member (30) is used, the inner shaft (375) is interposed via the inner fitting protrusion (22) and the outer cylinder (371). When a large force is applied to the inner shaft (375), the inner shaft (375) bends or twists, generating a large bending moment or torsion moment on the inner shaft (375), and supporting a pair of ends of the inner shaft (375). A large reaction force against these moments is generated in the outer fitting protrusion (52). Also in this case, it is possible to provide a support structure for the damper member (370) in which the inner shaft (375) and the pair of outer fitting protrusions (52) can sufficiently withstand a large bending moment, a torsional moment, and a large reaction force. Moreover, it is possible to provide a support structure for the damper member (370) that can sufficiently withstand the torsional moment generated in the inner shaft (375).
Further, in such a support structure of the damper member (370), if the inner shaft (375) is formed of a metallic shaft and has a high rigidity, the outer cylinder (371) has a relatively low rigidity. Therefore, the outer cylinder (371) can be formed of, for example, a resinous material.
[0013]
In the assist grip device for a vehicle according to claim 3,
When the damper member (370) is inserted into the coaxial hole (324, 325, 354, 355), the inner fitting protrusion (22) is positioned at a predetermined insertion position when the outer cylinder (371) contacts. The outer cylinder (371) is in contact with the inner shaft (375) when the inner shaft (375) is inserted into the outer cylinder (371). Since it has an inner shaft positioning part (373) positioned at a predetermined insertion position, if the damper member (370) is inserted into the coaxial hole (324, 325, 354, 355), the outer cylinder ( 371) abuts against the damper positioning portion (326) and the inner shaft (375) abuts against the inner shaft positioning portion (373), so that the shafts of the outer cylinder (371) and the inner shaft (375) of the damper member (370) are kept as they are. Directional positioning is , It is possible to improve the assembling property.
[0014]
In the assist grip device for a vehicle according to claim 4,
The outer cylinder (71) of the damper member (70) has a receiving hole (72) into which the inner shaft (75) is inserted, and the tip of the inner shaft (75) is connected to the damper member (70). The outer cylinder (71) and the inner shaft (75) are abutted against the hole bottom (73) of the receiving hole (72) so that the outer cylinder (71) and the inner shaft (75) can be integrally inserted at the time of insertion. The outer cylinder (71) and the inner shaft (75) of (70) can be handled integrally, and the assemblability can be improved.
Further, when the grip member (30) swings between the use position and the storage position, the tip of the inner shaft (75) rubs the hole bottom (73) of the accommodation hole (72) of the outer cylinder (71). However, since it rubs around the axis that is the center of rotation, it does not generate large frictional resistance, does not adversely affect operability, and has a problem with strength such as the inner shaft (75). Will not cause.
[0015]
In the assist grip device for a vehicle according to claim 5,
The proximal end portion of the inner shaft (75) abuts against the inner fitting protrusion (22) when the damper member (70) is inserted, and the diameter-expanding flange (for positioning the damper member (70) in the axial direction) 76), if the damper member (70) is inserted, the enlarged-diameter flange (76) abuts against the inner fitting protrusion (22), and the damper member (70) is positioned in the axial direction as it is. As a result, the assembling property can be improved.
[0016]
In the assist grip device for a vehicle according to claim 6,
The proximal end portion of the inner shaft (175) has a reinforcing portion (178) that is expanded in diameter and is passed from the inner fitting projection (22) to the outer fitting projection (52) that becomes the back side in the insertion direction. Therefore, for example, an excessive force is applied to the grip portion (40) of the grip member (30), and a large shear is applied to the inner shaft (175) spanned between the inner fitting protrusion (22) and the outer fitting protrusion (52). Even if a force is applied, the shearing force can be sufficiently supported by the reinforcing portion (178).
In the assist grip device for a vehicle according to claim 7,
The proximal end portion of the inner shaft (75) has a seal ring groove (79) into which the seal ring (80) is fitted at a position spaced from the diameter-enlarging flange (76). ) Even when a large force is applied to the base end portion of (), it is difficult for stress concentration to occur in the seal ring groove (79), and the strength can be improved without requiring a special reinforcing member.
[0017]
In the assist grip device for a vehicle according to claim 8,
The groove part of the accommodation hole (272) of the outer cylinder (271) has a seal ring groove (279) into which the seal ring (80) is fitted, and the seal ring (80) is connected to the seal ring groove (279). Since the inner shaft (75) is held by the diameter-enlarging flange (76), it is necessary to provide a seal ring groove on the inner shaft (75) having a smaller shaft diameter than the outer cylinder (271). The strength can be kept high.
[0018]
In the assist grip device for a vehicle according to claim 9,
Since the damper member (70) is mounted on one of the pair of base members (20) and the biasing means (60) is mounted on the other base member (20), the damper member (70) and the biasing means are mounted. (60) can be accommodated in the pair of legs (50), respectively, and the entire apparatus can be reduced in size.
Further, the damper member (70) and the urging means (60) are enlarged as compared with the case where the damper member (70) and the urging means (60) are provided as a set and each leg portion (50) is provided. Therefore, the strength of the outer cylinder (71) and the inner shaft (75) of the damper member (70) can be further increased, and the damper force and the biasing means (60) of the damper member (70) can be increased. The urging force can be further increased.
[0019]
In the assist grip device for a vehicle according to claim 10,
The housing hole (72) of the outer cylinder (71) is a portion corresponding to the range of the inner fitting protrusion (22) and is formed in a range not reaching the outer fitting protrusion (52). For example, an excessive force is applied to the grip portion (40) of the grip member (30), and a large shearing force acts on the inner shaft (175) spanned between the inner fitting protrusion (22) and the outer fitting protrusion (52). Even so, since the cross-sectional area of the portion to which the shearing force is applied is not small and is secured to an appropriate size, it can sufficiently withstand the shearing force.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, various embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a first embodiment of the present invention.
As shown in FIG. 2, this apparatus is fixed to an installation part 10 such as a wall part of a vehicle, and has a pair of base members 20 and a grip member 30.
[0021]
Each base member 20 is formed by integrally forming a base portion 21 and an internal fitting protrusion 22 with a resin material. The base 21 is formed in a groove cross-sectional shape so that the head of the fixing screw does not protrude, and the internal fitting protrusion 22 has a pair of support protrusions 23.
[0022]
The grip member 30 is formed in a substantially U shape by a grip portion 40 and leg portions 50 extending from both ends of the grip portion 40. Each leg 50 is pivotally attached to the pair of base members 20, so that the grip member is in a use position standing on the vehicle interior side from the user and a storage position lying on the installation part 10 side. It can swing. The inner fitting protrusion 22 of one base member 20 is internally provided with a biasing means 60 that is a coil spring having a biasing end hung on the leg portion 50. The urging means 60 urges the grip member 30 in a direction to return it from the use position to the storage position.
[0023]
As shown in FIGS. 1 and 2, the other base member 20 is provided with a damper member 70 that is a viscous damper for controlling the return speed when the grip member 30 returns to the retracted position. Yes. The leg portion 50 corresponding to the other base member 20 is formed with a storage groove having a thin hole bottom. Both side groove walls of the storage groove are formed as a pair of external fitting protrusions 52. In the gap between the pair of outer fitting protrusions 52, the base portion 21 and the inner fitting protrusion 22 of the base member 20 can be fitted.
Coaxial holes 24, 25, 54, and 55 are formed in the pair of outer fitting protrusions 52 and the pair of supporting protrusions 23 of the inner fitting protrusion 22, respectively. A damper member 70 is inserted into the coaxial holes 24, 25, 54, 55. The damper member 70 includes an outer cylinder 71 and an inner shaft 75 that is inserted into the accommodation hole 72 of the outer cylinder 71. The accommodation hole 72 is filled with oil. The damper member 70 may be of a friction type.
[0024]
The base end portion of the outer cylinder 71 is a knurled knurled portion 74, and the outer diameter of the knurled portion 74 is slightly larger than the general diameter of the outer cylinder. For example, a key portion for preventing rotation may be formed at the base end portion of the outer cylinder 71 without being limited to the knurled portion 74. The knurled portion 74 of the forming outer cylinder 71 is fixed in a non-rotatable manner to the coaxial hole 54 of the outer fitting protrusion 52 that is on the near side in the insertion direction. On the other hand, the general cylinder portion of the outer cylinder 71 is rotatably supported in the coaxial hole 24 of one support protrusion 23 of the inner fitting protrusion 22. In FIG. 1, the gap between the general cylinder portion of the outer cylinder 71 and the coaxial hole 24 of the support protrusion 23 is emphasized.
The inner shaft 75 has a diameter-enlarging flange 76 and a knurled portion 77 at an intermediate portion in the axial direction. One end side of the inner shaft 75 is inserted into the accommodation hole 72 of the outer cylinder 71, and the other end portion 78 of the outer cylinder 71 is rotatably supported by the coaxial hole 55 of the outer fitting protrusion 52 that is the back side in the insertion direction. ing. The diameter-enlarging flange 76 of the inner shaft 75 abuts against the concave portion 26 of the other support projection 23 of the inner fitting projection 22 when the damper member 70 is inserted, thereby positioning the damper member 70 in the axial direction. A knurled portion 77 of the outer cylinder 71 is fixed to the coaxial hole 24 of the other supporting projection 23 of the inner fitting projection 22 so as not to rotate.
[0025]
The distal end of the inner shaft 75 is abutted against the hole bottom 73 of the accommodation hole 72 of the outer cylinder 71. Thereby, the outer cylinder 71 and the inner shaft 75 can be inserted integrally when the damper member 70 is inserted.
A seal ring groove 79 for fitting the seal ring 80 is formed at the base end portion of the inner shaft 75. The seal ring groove 79 is formed at a position separated from the diameter-enlarged flange 76 to such an extent that stress concentration is unlikely to occur. As shown in FIG. 3, a seal ring groove 279 may be formed in the groove portion of the accommodation hole 272 of the outer cylinder 271. In this case, the seal ring 80 is held by the seal ring groove 279 and the diameter expansion flange 76 of the inner shaft 75.
[0026]
Next, the operation of the embodiment of the present invention will be described.
The inner fitting protrusion 22 of the base member 20 is fitted into the gap between the pair of outer fitting protrusions 52 of the leg portion 50 of the grip member 30.
A damper member 70 is inserted into the coaxial holes 24, 25, 54, 55 formed in the pair of outer fitting protrusions 52 and inner fitting protrusions 22, respectively. When the damper member 70 is inserted into the coaxial holes 24, 25, 54, 55, the knurled portion 74 of the outer cylinder 71 of the damper member 70 cannot rotate into the coaxial hole 54 of the outer fitting protrusion 52 that is on the near side in the insertion direction. The general diameter portion of the outer cylinder 71 is rotatably supported in the coaxial hole 24 of the inner fitting protrusion 22. Further, the inner shaft 75 of the damper member 70 is rotatably supported with respect to the coaxial hole 55 of the outer fitting protrusion 52 which is the back side in the insertion direction, and the knurled portion 77 of the inner shaft 75 is coaxial with the inner fitting protrusion 22. The hole 25 is solidified so as not to rotate. Thereby, it is not necessary to provide special fixing means such as a set screw, and the assembling property can be improved.
[0027]
Further, since the tip of the inner shaft 75 is abutted against the hole bottom 73 of the accommodation hole 72, the outer cylinder 71 and the inner shaft 75 are inserted integrally when the damper member 70 is inserted, and the damper member The outer cylinder 71 and the inner shaft 75 of the damper member 70 can be handled integrally when the damper 70 is mounted, and the assemblability can be improved from this point.
Further, since the diameter-enlarging flange 76 is formed at the proximal end portion of the inner shaft 75, the diameter-enlarging flange 76 abuts against the recess 26 of the other supporting protrusion 23 of the inner fitting protrusion 22 when the damper member 70 is inserted. Thus, the damper member 70 can be positioned in the axial direction, and the assembling property can be improved from this point.
[0028]
Further, the entire damper member 70 is accommodated in a pivotal connection portion between the leg portion 50 of the grip member 30 and the base member 20, thereby reducing the size of the entire device, and supporting or covering the damper member 70. There is no need to provide a separate member.
Further, since the damper member 70 is mounted on one side of the pair of base members 20 and the biasing means 60 is mounted on the other base member 20 side, the damper member 70 and the biasing means 60 are connected to the pair of leg portions. It becomes the form accommodated in the site | part to which 50 is pivotally attached, and the whole apparatus can be reduced in size.
[0029]
Furthermore, both the outer cylinder 71 and the inner shaft 75 can be molded by appropriately increasing or decreasing the outer diameter of the round shaft material in the axial direction, and the knurling portions 74 and 77 can be molded by ordinary techniques. There is no need for difficult processing.
In the assembly as described above, when the outer cylinder 71 and the inner shaft 75 of the damper member 70 are relatively rotated, the grip member 30 can swing between the use position and the storage position. In order to swing the grip member 30 to the use position, the grip portion 40 may be raised against the biasing force of the biasing means 60.
[0030]
When the grip member 30 is in the use position, for example, when the hand is released from the grip portion 40, the grip member 30 returns from the use position to the storage position by the urging force of the urging means 60, but the outer cylinder 71 of the damper member 70 Since the oil in the accommodation hole 72 needs to be moved when the inner shaft 75 rotates relative to the accommodation hole 72, a buffering action is generated, and the return speed when the grip member 30 returns is greatly reduced. It is prevented that the member 30 collides with the installation part 10 at high speed.
Further, when the grip member 30 swings between the use position and the storage position, the tip end portion of the inner shaft 75 rubs against the hole bottom 73 of the accommodation hole 72 of the outer cylinder 71. Therefore, no large frictional resistance is generated, the operability is not adversely affected, and the strength problem of the inner shaft 75 is not caused.
When an excessive load is applied to the damper member 70 via the leg portion 50, the inner shaft 75 is in the vicinity of the expanded flange 76 having the largest outer diameter and in the vicinity of the seal ring groove 79 having the smallest outer diameter. Concentrated stress is likely to occur, but the seal ring groove 79 is formed at a position sufficiently separated from the diameter-enlarging flange 76 and is arranged so that stress concentration is unlikely to occur, and is large at the proximal end portion of the inner shaft 75. Even if force is applied, stress concentration is unlikely to occur in the seal ring groove 79, and no special reinforcing member is required.
[0031]
FIG. 4 shows a second embodiment of the present invention.
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
A reinforcing portion 178 is formed at the proximal end portion of the inner shaft 175. The reinforcing portion 178 is expanded in diameter from the general diameter portion of the inner shaft inserted into the outer cylinder 271, and extends from the other supporting projection 23 of the inner fitting projection 22 to the outer fitting projection 152 which is the back side in the insertion direction. Has been. A part of the reinforcing portion 178 is a knurled portion that fits into the coaxial hole 25 of the support protrusion 23 so as not to rotate.
[0032]
In such a configuration, for example, when an excessive force is applied to the grip portion 40 of the grip member 30 and a large shearing force acts on the inner shaft 175 spanned between the inner fitting protrusion 22 and the outer fitting protrusion 52, the reinforcing portion Since the diameter of 178 is large, the reinforcing portion 178 can sufficiently support the shearing force.
[0033]
5 to 8 show a third embodiment of the present invention.
Also in the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0034]
In the present embodiment, the damper member 370 includes a resin outer cylinder 371 and a metal inner shaft 375. The outer cylinder 371 includes a large-diameter receiving hole 372 corresponding to the proximal end side in the insertion direction and a small-diameter portion 371b corresponding to the distal end side in the insertion direction. An inner shaft positioning portion 373 that is an inner stepped portion is formed on the inner wall of the outer cylinder 371 at the boundary between the large-diameter receiving hole 372 and the small-diameter portion 371b, and a knurled portion that is knurled on the outer wall of the outer cylinder 371. 374 is formed. The knurled part 374 is fixed to the hole wall of the coaxial hole 324 on the near side in the insertion direction of the base member 20 so as not to rotate. In addition, an outer stepped portion 376 is formed on the outer wall of the outer cylinder 371 corresponding to the inner shaft positioning portion 373. On the other hand, the inner shaft 375 includes a knurled portion 377 that is a head on the proximal end side in the insertion direction, a large diameter portion 375a, and a small diameter portion 378 on the distal end side in the insertion direction.
[0035]
The large diameter portion 375a is inserted into the accommodation hole 372, and the small diameter portion 378 is inserted into the small diameter portion 371b. Further, the knurled portion 377 is fixed to the hole wall of the coaxial hole 354 on the near side in the insertion direction of the leg portion 50 of the grip member 30 so as not to rotate. The small diameter portion 378 of the inner shaft 375 is inserted into the hole wall of the coaxial hole 355 on the back side in the insertion direction of the leg portion 50 of the grip member 30. That is, the inner shaft 375 passes through the coaxial hole 354 of the outer fitting protrusion 52 on the near side of the leg portion 50, reaches the outer fitting protrusion 52 on the inner side, and enters the coaxial hole 355 of the outer fitting protrusion 52 on the inner side. Inserting. As a result, the inner shaft 375 is supported by the pair of outer fitting protrusions 52 in the form of both ends, and when the grip member 30 is used, the inner shaft 375 is larger than the inner shaft 375 via the inner fitting protrusion 22 and the outer cylinder 371. Even if a large bending moment or torsional moment is generated on the inner shaft 375 and a large reaction force is generated on the pair of external fitting protrusions 52, the inner shaft 375 and the pair of outer fitting protrusions 52 generate their moments. This can sufficiently withstand the reaction force and the like, and can increase the rigidity of the assist grip device.
[0036]
When the inner shaft 375 is inserted, the inner shaft positioning portion 373 of the outer cylinder 371 comes into contact with a step portion 375b formed at the boundary between the large diameter portion 375a and the small diameter portion 378, and the inner shaft 375 is moved to a predetermined position. This is for positioning at the interpolation position. The damper positioning portion 326 corresponding to the hole edge of the coaxial hole 325 on the back side in the insertion direction of the base member 20 is in contact with the outer step portion 376 of the outer cylinder 371, so that the outer cylinder 371, and hence the damper member 370. Is positioned at a predetermined position. Accordingly, if the damper member 370 is inserted, the outer step portion 376 of the outer cylinder 371 hits the damper positioning portion 326 and the step portion 375b of the inner shaft 375 hits the inner shaft positioning portion 373. At the same time, the outer cylinder 371 and the inner shaft 375 of the damper member 370 can be positioned in the axial direction, and the assemblability can be improved.
[0037]
A pair of seal ring grooves 379 are formed in the large diameter portion 375a of the inner shaft 375 so as to be separated from each other in the axial direction. A pair of seal ring grooves 379 is fitted with a seal ring 380 for sealing damper oil filled in a gap between the large diameter portion 375a and the accommodation hole 372, respectively.
The inner fitting protrusion 22 is provided with coaxial holes 324 and 325 at both end portions, but a gap is formed between the intermediate portion between the both end portions of the inner fitting protrusion 22 and the outer cylinder 371. Has been. If the gaps are formed, the accuracy of the main parts such as the hole accuracy of the coaxial holes 324 and 325 of the inner fitting protrusion 22 and the outer diameter accuracy of both end portions of the outer cylinder 371 can be improved. As a result, variations in assembly accuracy and the like are suppressed, and as a result, the damper characteristics can be stabilized.
[0038]
Further, as described above, the inner shaft 375 is solidified by the knurled portion 377 that is the base end side in the insertion direction being firmly fitted into the coaxial hole 377 of the outer fitting protrusion 52 in the insertion direction. Similarly, the outer cylinder 371 has a structure in which the knurled portion 374 that is the proximal end side in the insertion direction is firmly fitted into the coaxial hole 324 of the inner fitting protrusion 22 on the near side in the insertion direction.
Thereby, the inner shaft 375 can have a portion corresponding to the distal end side in the insertion direction (a portion including the small diameter portion 378 and the like) having a smaller diameter than the knurled portion 377. Similarly, the outer cylinder 371 is inserted into the inner shaft 375. The portion corresponding to the tip side in the direction can be made thinner than the knurled portion 374, the insertion load can be kept low, the assemblability can be improved, and the rotation holding force can be made high.
[0039]
A concave portion of the base 21 of the base member 20 is covered with a cap member 327 from the outside. The leg portion 52 of the grip member 30 is in contact with the base portion 21 and restrains the grip member 30 to the use position, and in use, the storage member restrains the grip member 30 in the retracted position by contacting the cap member 327. An hour contact portion 358 is formed.
[0040]
【The invention's effect】
According to the assist grip device for a vehicle according to the present invention, the cushioning member can be accommodated in the leg portion of the grip body to reduce the size of the device, reduce the number of components, and reduce the cost.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a main part of an assist grip device for a vehicle showing a first embodiment of the present invention.
FIG. 2 is a perspective view of an assist grip device for a vehicle showing a first embodiment of the present invention.
FIG. 3 is a cross-sectional view of the main part of the assist grip device for a vehicle showing the first embodiment of the present invention.
FIG. 4 is a cross-sectional view of the main part of an assist grip device for a vehicle showing a second embodiment of the present invention.
FIG. 5 is a perspective view of a main part of an assist grip device for a vehicle showing a third embodiment of the present invention.
FIG. 6 is a perspective view of an assist grip device for a vehicle showing a third embodiment of the present invention.
FIG. 7 is an operation explanatory view of a vehicle assist grip device according to a third embodiment of the present invention.
FIG. 8 is a cross-sectional view of a main part of an assist grip device for a vehicle showing a third embodiment of the present invention.
[Explanation of symbols]
10 ... Installation section
20 ... Base member
21 ... Base
22 ... Internal fitting protrusion
23 ... Support protrusion
24, 25 ... Coaxial hole
26 ... recess
30 ... Grip member
40 ... gripping part
50 ... Leg
52. External fitting protrusion
54, 55 ... Coaxial hole
60: Energizing means
70 ... Damper member
71 ... outer cylinder
72 ... receiving hole
73 ... Bottom of the accommodation hole
74 ... Knurling
75 ... Inner shaft
76 ... Diameter expansion flange
77 ... Knurling
78 ... The other end of the inner shaft
79 ... Seal ring groove
80 ... seal ring
178 ... Reinforcing part
324, 325, 354, 355 ... Coaxial hole
370 ... Damper member
371 ... outer cylinder
375 ... Inner shaft

Claims

A pair of base members fixed to a mounting portion such as a vehicle wall portion, and grip members formed in a substantially U shape by a grip portion and legs extending from both ends of the grip portion; An assist grip device for a vehicle in which legs are pivotally attached to the pair of base members so that the grip member can swing between a use position and a storage position, and the grip member is moved from the use position to the storage position. In what is provided with a biasing means for biasing in the direction to return to the position, and a damper member for controlling the return speed when the grip member returns to the storage position,
A pair of external fitting protrusions is formed on one of the leg portion of the grip member and the base member, an internal fitting protrusion is formed on the other of the leg portion and the base member, and a gap between the pair of external fitting protrusions is formed. Insert the internal fitting protrusion into the gap,
Coaxial holes are respectively drilled in the pair of outer fitting protrusions and the inner fitting protrusions, and a damper member having an outer cylinder and an inner shaft inserted into the outer cylinder is inserted into the coaxial holes, The outer cylinder is fixed in a non-rotatable manner with respect to the outer fitting protrusion which is on the front side in the insertion direction, and is rotatably supported with respect to the inner fitting protrusion, and the inner shaft is fixed in the insertion direction. An assist grip device for a vehicle, which is rotatably supported with respect to an outer fitting protrusion on the back side, and is fixed so as not to rotate with respect to the inner fitting protrusion.

A pair of base members fixed to a mounting portion such as a vehicle wall portion, and grip members formed in a substantially U shape by a grip portion and legs extending from both ends of the grip portion; An assist grip device for a vehicle in which legs are pivotally attached to the pair of base members so that the grip member can swing between a use position and a storage position, and the grip member is moved from the use position to the storage position. In what is provided with a biasing means for biasing in the direction to return to the position, and a damper member for controlling the return speed when the grip member returns to the storage position,
A pair of external fitting protrusions is formed on one of the leg portion of the grip member and the base member, an internal fitting protrusion is formed on the other of the leg portion and the base member, and a gap between the pair of external fitting protrusions is formed. Insert the internal fitting protrusion into the gap,
Coaxial holes are respectively drilled in the pair of outer fitting protrusions and the inner fitting protrusions, and a damper member having an outer cylinder and an inner shaft inserted into the outer cylinder is inserted into the coaxial holes, The outer cylinder is fixed in a non-rotatable manner with respect to the inner fitting protrusion, while the inner shaft is passed through the coaxial hole of the outer fitting protrusion on the near side in the insertion direction, and the outer side is outer in the insertion direction. An assist grip device for vehicles, wherein the assist grip device is inserted into a coaxial hole of a fitting projection and solidified so as not to rotate with respect to the outer fitting projection.

The inner fitting protrusion has a damper positioning portion that is positioned at a predetermined insertion position by contacting the outer cylinder when the damper member is inserted into the coaxial hole,
The outer cylinder includes an inner shaft positioning portion that is positioned at a predetermined insertion position by contacting the inner shaft when the inner shaft is inserted into the outer cylinder. Item 3. An assist grip device for a vehicle according to Item 2.

The outer cylinder of the damper member has a receiving hole into which the inner shaft is inserted,
The tip of the inner shaft is abutted against the bottom of the accommodation hole so that the outer cylinder and the inner shaft are integrally inserted when the damper member is inserted. The assist grip apparatus for vehicles as described.

2. The base end portion of the inner shaft has a diameter-enlarging flange that abuts on the inner fitting protrusion side when the damper member is inserted to position the damper member in the axial direction. Or the assist grip apparatus for vehicles of 4.

The base end portion of the inner shaft has a reinforcing portion that is expanded in diameter and is passed from the inner fitting projection to an outer fitting projection that becomes the back side in the insertion direction. 5. The assist grip device for vehicles according to 5.

7. The vehicle according to claim 1, wherein the base end portion of the inner shaft has a seal ring groove into which a seal ring is fitted at a position separated from the diameter-enlarging flange. Assist grip device.

The groove portion of the housing hole of the outer cylinder has a seal ring groove into which the seal ring is fitted,
8. The assist grip device for a vehicle according to claim 1, wherein the seal ring is held by the seal ring groove and an enlarged flange of the inner shaft.

9. The damper member is mounted on one of the pair of base members, and biasing means is mounted on the other base member. Assist grip device for vehicles.

The accommodation hole of the said outer cylinder is a part corresponding to the range of the said internal fitting protrusion, Comprising: It is formed in the range which does not reach to the said external fitting protrusion. , 7, 8 or 9, an assist grip device for a vehicle.