JP2004066893A - Storage type assist grip - Google Patents

Storage type assist grip Download PDF

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Publication number
JP2004066893A
JP2004066893A JP2002226313A JP2002226313A JP2004066893A JP 2004066893 A JP2004066893 A JP 2004066893A JP 2002226313 A JP2002226313 A JP 2002226313A JP 2002226313 A JP2002226313 A JP 2002226313A JP 2004066893 A JP2004066893 A JP 2004066893A
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JP
Japan
Prior art keywords
concave portion
fitting shaft
peripheral surface
grip
grip body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
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JP2002226313A
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Japanese (ja)
Inventor
Shigemi Takagi
高木　茂実
Hiroshi Yamamoto
山本　弘志
Noriaki Igaki
伊垣　典明
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Daikyo Nishikawa Corp
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Nishikawa Kasei Co Ltd
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Application filed by Nishikawa Kasei Co Ltd filed Critical Nishikawa Kasei Co Ltd
Priority to JP2002226313A priority Critical patent/JP2004066893A/en
Publication of JP2004066893A publication Critical patent/JP2004066893A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To improve stability and reliability in operation of a turn type and storage type assist grip provided with a pair of mounting seats, a grip main body supported turnably in a leg part, a twist coil spring rotatably applying a force to the grip main body from a use position to a storage position, and a damper means suppressing turn of the grip main body from the use position to the storage position. <P>SOLUTION: In this storage type assist grip, a recessed part 28 is formed in a support part 26 of the second mounting seat 12 as the damper means 24, a fitting shaft 31 whose tip part is positioned on a bottom part side of the recessed part 28 and whose terminal part is inserted into a locking port part 4 on a side wall of a storage part 2 in the leg part 1b and is locked to prevent its turn is turnably fitted in the recessed part 28, and a plurality of four cutout channels 38, 38 extending in the direction of axial line are provided on an outer peripheral face of the fitting shaft 31. Viscous agent L is filled into a clearance between an inner peripheral face of the recessed part 28 and the outer peripheral face of the fitting shaft 31, a clearance between an inner bottom face of the recessed part 28 and a tip face of the fitting shaft 31, and inside the cutout channels 38. A seal material 40 is provided between an opening port of the recessed part 28 and the fitting shaft 31. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、不使用時に使用位置から格納位置に回動して格納される格納式アシストグリップに関し、特に、その作動の安定性及び信頼性を向上させるための対策に関する技術分野に属する。
【０００２】
【従来の技術】
従来より、この種の格納式アシストグリップとして、車体パネル等の固定体に固定される１対の取付座と、これら取付座にそれぞれ脚部にて回動可能に軸支された長尺状のグリップ本体と、このグリップ本体を使用位置から格納位置に回動付勢するコイルばね等の付勢手段とを備えたものが知られている。
【０００３】
そして、例えば特開２００１―５８５３５号公報に示されるように、高粘度の粘性剤が封入されたダンパ手段をグリップ本体と取付座との間に一体的に組み込んだものが提案されている。
【０００４】
この提案のものでは、長さ方向両端部の脚部でそれぞれ取付座に回動可能に軸支されたグリップ本体に対し、その各脚部に、グリップ本体が格納位置にある状態で取付座の一部を収容する収容部を形成し、ダンパ手段を設ける側の取付座に、グリップ本体の長さ方向を中心軸とする凹部と、この凹部の底面に突設された挿入軸とを有する筒状部を形成し、その凹部内に回動可能に嵌入されかつ挿入軸を嵌入させる嵌入部を有する嵌入軸（スペーサ）を、収容部のグリップ本体長さ方向に対向する２つの側壁のうちの凹部開放側の側壁に係合する一方、凹部底部側の筒状部に収容部の他方の側壁を相対回動可能に支承し、この嵌入軸の外周面と凹部の内周面との間、及び挿入軸の外周面と嵌入部の内周面との間に粘性剤を介在させ、この粘性剤の粘性により嵌入軸つまりグリップ本体の回動に抵抗を生じさせるようにしている。
【０００５】
【発明が解決しようとする課題】
ところで、上記提案例のもののように、取付座の凹部にスペーサとしての嵌入軸を嵌入し、両者間の隙間に粘性剤を充填する構造において、その粘性剤による制動効果（ダンパ効果）を高め、アシストグリップの作動の安定性及び信頼性を向上させるためには、粘性剤の充填量を可能な限り多くすることが望ましい。
【０００６】
また、取付座の凹部に嵌入軸を嵌入して組み付ける場合、例えば前もって凹部に粘性剤を充填しておき、その粘性剤が充填されている凹部に嵌入軸を嵌入する作業が行われるが、その際、凹部内周面と嵌入軸外周面との間の隙間からなる粘性剤充填用の空間からエアを十分に抜いて、その空間内に粘性剤のみが充填されるようにすることが望ましく、上記粘性剤の制動効果を高めてアシストグリップの作動の安定性及び信頼性を向上させることができる。しかし、実際には、嵌入軸の嵌入時に空間からエアを確実に放出させることは難しく、制動効果を高めるのに限度がある。
【０００７】
さらに、上記嵌入軸は凹部に嵌入されて取付座に組み付けられるが、製造誤差や組付誤差等によるがたつきにより嵌入軸が凹部の開放口側へ抜け出ることがあり、この嵌入軸の抜け出しを規制して嵌入軸を凹部内に適正位置で嵌入保持しておかないと、粘性剤の漏出等を招くこととなり、アシストグリップの作動の安定性及び信頼性を向上させるべく、その対策をしておくことが好ましい。
【０００８】
また、例えば使用者がグリップ本体を掴んで大きな力で引っ張る等して、グリップ本体側の嵌入軸に大きな荷重が働き、嵌入軸が支持部の凹部に対しグリップ本体の長さ方向と略直交する方向に大きく相対移動したときに、その移動に伴いシール材が元の形状に戻らない程度にまで圧縮変形して潰れる圧壊状態になることがある。この場合もシール材のシール性が悪くなって隙間からの粘性剤の漏出を招き、アシストグリップの作動の安定性及び信頼性の向上の点で問題が生じる。
【０００９】
本発明は斯かる諸点に鑑みてなされたもので、その目的は、上記のように取付座の凹部内にグリップ本体側の嵌入軸を嵌入し、凹部内周面及び嵌入軸外周面の間に粘性剤を充填する格納式アシストグリップの構造に改良を加えることで、そのアシストグリップの作動の安定性及び信頼性を向上させることにある。
【００１０】
【課題を解決するための手段】
上記の目的を達成するために、請求項１の発明では、固定体に固定される１対の取付座と、これら取付座にそれぞれ脚部にて回動可能に軸支された長尺状のグリップ本体と、このグリップ本体を使用位置から格納位置に回動付勢する付勢手段とを備えた格納式アシストグリップが前提である。
【００１１】
そして、上記脚部のうち上記グリップ本体が格納位置にあるときの上記固定体との対向面には、グリップ本体の長さ方向に対向する２つの側壁を有しかつ該グリップ本体の格納位置で上記取付座の一部を収容する収容部が切り欠いて形成されている。
【００１２】
また、上記１対の取付座のうちの少なくとも一方には、グリップ本体の長さ方向に延びる有底筒状の凹部を有する支持部が形成されていて、その凹部の開放口は上記収容部の２つの側壁のうちの一方の側壁側に、また底部は他方の側壁側にそれぞれ位置している。
【００１３】
さらに、上記収容部の２つの側壁のうち上記凹部の開放口に面する一方の側壁には係止口部が凹部と同心状に貫通形成され、この支持部の凹部には、先端部を凹部の底部側に位置させかつ基端部を上記収容部の側壁の係止口部に挿通して回動不能に係止せしめた嵌入軸が回動可能に嵌入されている。
【００１４】
また、上記凹部内に位置する嵌入軸の外周面には、嵌入軸の軸線方向に延びる少なくとも１つの切欠溝が設けられ、少なくとも上記凹部の内周面と嵌入軸の外周面との間の隙間、及び上記切欠溝の内部からなる粘性剤充填空間に粘性剤が充填されており、上記凹部の開放口と嵌入軸との間に、上記粘性剤充填空間からの粘性剤の流出を阻止するシール材が介在されている。
【００１５】
上記の構成によると、固定体に固定される１対の取付座にそれぞれグリップ本体が脚部にて回動可能に軸支され、このグリップ本体は付勢手段により使用位置から格納位置に回動付勢される。また、１対の取付座のうちの少なくとも一方に、凹部を有する支持部が設けられている一方、この取付座に対応するグリップ本体の脚部には、凹部内に回動可能に嵌入される嵌入軸がその基端部を脚部における収容部の側壁の係止口部に挿通されて回動不能に係止され、この凹部の内周面と嵌入軸の外周面との間の隙間、及び嵌入軸外周面の切欠溝内からなる粘性剤充填空間に粘性剤がシール材で封止された状態で介在されているので、この粘性剤の粘性によりダンパ作用が得られ、上記付勢手段によりグリップ本体が使用位置から格納位置へ回動するときに、そのグリップ本体の回動に抵抗が生じて、グリップ本体がゆっくりと回動するようになり、その動きに高級感が得られる。また、上記グリップ本体の格納位置では、その脚部の収容部内に取付座の一部が収容される。
【００１６】
そのとき、上記粘性剤は、取付座における支持部の凹部の内周面と嵌入軸の外周面との間の隙間のみならず、嵌入軸の外周面に嵌入軸の軸線方向に延びるように設けられた切欠溝内にも充填されているので、凹部内周面と嵌入軸外周面との間の隙間のみに粘性剤が充填される場合に比べ、粘性剤の充填量が増大する。このため、嵌入軸の支持部における凹部への組付けに際して注入機等により粘性剤を上記凹部に注入するとき、注入量の誤差（ばらつき）が生じても、その誤差による注入量の変動は注入量（充填量）の少ない上記の場合に比べて小さくなる。これにより粘性剤の充填量不足をなくし、グリップ本体の回動に対するダンパ効果を高めることができる。
【００１７】
しかも、上記凹部内周面と嵌入軸外周面との間の隙間、及び嵌入軸外周面の嵌入軸軸線方向に延びる切欠溝内は互いに連通しており、嵌入軸が凹部に対して相対回転する際、凹部内周面と嵌入軸外周面との間の隙間に充填されている粘性剤が凹部内周面に追従しようとするのに対し、嵌入軸外周面の切欠溝内に充填されている粘性剤はその切欠溝内部で嵌入軸と共に移動するので、これら両粘性剤間に剪断作用が働き、この粘性剤間の剪断作用によりグリップ本体の回動抵抗を増大させて、そのダンパ効果をさらに高めることができる。
【００１８】
そして、これら粘性剤の増量によるダンパ効果と粘性剤の剪断によるダンパ効果との相乗作用により、グリップ本体の回動に対する大きなダンパ効果が確実に安定して得られ、よってアシストグリップの作動の安定性及び信頼性を向上させることができる。
【００１９】
請求項２の発明では、上記凹部の開放口近傍位置に対応する嵌入軸外周面に環状溝が凹設されていて、この環状溝にシール材が嵌め込まれている。また、上記環状溝において上記切欠溝の延長線上の位置の少なくとも１箇所に、上記凹部に嵌入される嵌入軸の嵌入方向と反対側に上記シール材を部分的に環状溝から相対移動可能とする拡幅部が溝幅を他の部分よりも拡げて形成され、上記拡幅部の底部と該拡幅部に対応する位置の環状溝の底部とに亘り互い連続するエア抜き溝が形成され、上記拡幅部の縦壁に、一端が上記エア抜き溝の拡幅部側の端部に連続する一方、他端が大気に開放されたエア放出溝が設けられていることを特徴とする。
【００２０】
この構成によると、取付座における支持部の凹部にグリップ本体側の嵌入軸を嵌入するとき、凹部内の底部（奥部）に必要量の粘性剤を充填しておき、凹部の開放口近傍位置に対応する嵌入軸の外周面に凹設した環状溝にシール材を嵌め込んだ状態で、凹部内に嵌入軸を嵌入すると、その嵌入に伴って凹部内の底部に充填されている粘性剤は、その大半が嵌入軸外周面の切欠溝に流入し、その残部が該切欠溝への充填と並行して嵌入軸外周面と凹部内周面との間の隙間に流出する。また、切欠溝に流入した粘性剤の一部は、切欠溝の開口から嵌入軸外周面と凹部内周面との間の隙間にも流入する。
【００２１】
そして、凹部内に残留していたエアは、上記のようにして移動する粘性剤に押されて凹部の開放口に押し出されるが、このエアは、上記シール材が嵌入軸外周面と凹部内周面との間の隙間である粘性剤充填空間を閉じるまでに排出されないと、その空間に粘性剤と共に残留することとなる。
【００２２】
そのとき、上記シール材を嵌合した環状溝に部分的に、嵌入軸の凹部への嵌入方向と反対側に拡がる拡幅部が形成されており、この拡幅部の底部と拡幅部に対応する位置の環状溝の底部とに亘り互い連続するエア抜き溝が形成され、このエア抜き溝の拡幅部側の端部に拡幅部縦壁のエア放出溝が一端で連続し、エア放出溝の他端は大気に開放されているので、上記のように嵌入軸の嵌入の途中でシール材が嵌入軸外周面と凹部内周面との間の粘性剤充填空間を閉じたとしても、その後、嵌入軸を凹部内にさらに押し込むと、その空間の内圧が増大し、この内圧の増大によりシール材が拡幅部で部分的に嵌入軸の嵌入方向と反対側に相対移動するように湾曲する。このシール材の拡幅部での環状溝からの相対移動に伴い、上記エア抜き溝の環状溝側の端部が移動状態のシール材よりも上記粘性剤充填空間に開放されて連通するようになる。このことで、その粘性剤充填空間にエアが残留していても、そのエアは上記粘性剤充填空間に開放されたエア抜き溝に流入し、このエア抜き溝からその拡幅部側の端部に連続するエア放出溝を経て大気に放出される。
【００２３】
しかも、上記環状溝における拡幅部は、嵌入軸外周面にある切欠溝の延長線上の位置に、つまり切欠溝に対応して設けられているので、切欠溝内の残留エアは、上記のように切欠溝の開口から出て凹部の開放口に向かう粘性剤の動きに押されると、切欠溝から排出された後、その切欠溝の延長上の拡幅部で湾曲したシール材の内周側を越え、エア抜き溝ないしエア放出溝を経て大気に放出される。この切欠溝と拡幅部との一致により切欠溝内の残留エアをスムーズに排出することができ、よって粘性剤充填空間からエアを確実に放出して、そのエア抜きを有効に行うことができ、嵌入軸が凹部内に完全に嵌入されてシール材により粘性剤充填空間が密封された状態では、その空間にエア混在のない粘性剤が充填されて良好な制動効果が発揮される。よって、グリップ本体の回動に対する大きなダンパ効果が確実に安定して得られ、アシストグリップの作動の安定性及び信頼性を向上させることができる。
【００２４】
尚、上記粘性剤充填空間から残留エアがエア抜き溝及びエア放出溝により抜け出すと、粘性剤充填空間の内圧が下がるので、上記拡幅部に移動していたシール材の一部が拡幅部から環状溝に戻る。
【００２５】
請求項３の発明では、上記請求項１又は２の発明の格納式アシストグリップにおいて、凹部の開放口近傍位置の内周面でかつグリップ本体が所定位置にあるときの切欠溝の略延長線上の位置に、一端が、凹部に嵌入軸を嵌入した状態のシール材の位置よりも開放口側に開口し、他端が凹部の開放口端面に開口する少なくとも１つの支持部側エア抜き溝が設けられていることを特徴とする。
【００２６】
この構成によると、凹部の開放口近傍位置の内周面における支持部側エア抜き溝は、グリップ本体が凹部に対し所定位置（例えば格納位置）にあるときに嵌入軸外周面の切欠溝の略延長線上の位置に設けられているので、このグリップ本体を上記所定位置に位置付けて凹部内に嵌入軸を嵌入することで、嵌入軸はその切欠溝が支持部側エア抜き溝に軸方向に略繋がるように対応して嵌入されることとなり、このことで、粘性剤充填空間の特に切欠溝内の残留エアを支持部側エア抜き溝からスムースに排出することができる。よって、この場合も、嵌入軸が凹部内に完全に嵌入されて粘性剤充填空間にエア混在のない粘性剤が充填され、その粘性剤による良好な制動効果が発揮され、グリップ本体の回動に対する大きなダンパ効果が確実に安定して得られ、アシストグリップの作動の安定性及び信頼性を向上させることができる。
【００２７】
請求項４の発明では、上記請求項１の発明の前提と同じ格納式アシストグリップにおいて、脚部のうちグリップ本体が格納位置にあるときの固定体との対向面には、グリップ本体の長さ方向に対向する２つの側壁を有しかつ該グリップ本体の格納位置で上記取付座の一部を収容する収容部が切り欠いて形成され、上記１対の取付座のうちの少なくとも一方には、グリップ本体の長さ方向に延びる有底筒状の凹部を有する支持部が形成されていて、該凹部の開放口は上記収容部の２つの側壁のうちの一方の側壁側に、また底部は他方の側壁側にそれぞれ位置しており、上記収容部の２つの側壁のうち上記凹部の開放口に面する一方の側壁には係止口部が凹部と同心状に貫通形成され、上記支持部の凹部には、先端部を凹部の底部側に位置させかつ基端部を上記収容部の側壁の係止口部に挿通して回動不能に係止せしめた嵌入軸が回動可能に嵌入され、少なくとも上記凹部の内周面と嵌入軸の外周面との間の隙間からなる粘性剤充填空間に粘性剤が充填され、上記凹部の開放口近傍位置の嵌入軸外周面に環状溝が凹設されていて、該環状溝に上記粘性剤充填空間からの粘性剤の流出を阻止するシール材が嵌め込まれている。
【００２８】
そして、上記凹部の開放口近傍位置の内周面に、上記シール材と当接することで、嵌入軸が凹部に嵌入された状態で上記開放口側へ移動するのを阻止する規制部が設けられていることを特徴とする。
【００２９】
この構成によれば、凹部の開放口近傍位置の内周面にシール材と当接する規制部が設けられているので、製造誤差や組付誤差等によるがたつきにより嵌入軸が凹部の開放口側へ抜け出ようとしても、その嵌入軸の移動は、環状溝に嵌め込まれているシール材を介して規制部に阻止されることとなり、嵌入軸の凹部からの抜け出しが規制される。よって、アシストグリップの作動の安定性及び信頼性を向上させることができる。
【００３０】
請求項５の発明では、請求項１の発明の前提と同じ格納式アシストグリップにおいて、脚部のうちグリップ本体が格納位置にあるときの固定体との対向面には、グリップ本体の長さ方向に対向する２つの側壁を有しかつ該グリップ本体の格納位置で上記取付座の一部を収容する収容部が切り欠いて形成され、上記１対の取付座のうちの少なくとも一方には、グリップ本体の長さ方向に延びる有底筒状の凹部を有する支持部が形成されていて、該凹部の開放口は上記収容部の２つの側壁のうちの一方の側壁側に、また底部は他方の側壁側にそれぞれ位置しており、上記収容部の２つの側壁のうち上記凹部の開放口に面する一方の側壁には係止口部が凹部と同心状に貫通形成され、上記支持部の凹部には、先端部を凹部の底部側に位置させかつ基端部を上記収容部の側壁の係止口部に挿通して回動不能に係止せしめた嵌入軸が回動可能に嵌入され、少なくとも上記凹部の内周面と嵌入軸の外周面との間の隙間からなる粘性剤充填空間に粘性剤が充填され、上記凹部の開放口と嵌入軸との間に上記粘性剤充填空間からの粘性剤の流出を阻止するシール材が介在されている。
【００３１】
そして、上記凹部の開放口近傍位置の嵌入軸外周面又は凹部内周面の一方に、嵌入軸と支持部とがグリップ本体の長さ方向と略直交する方向に相対移動したときに上記嵌入軸外周面又は凹部内周面の他方と当接して、シール材の所定以上の圧縮変形を規制する突起部が設けられていることを特徴とする。
【００３２】
この構成によると、取付座における支持部の凹部内にグリップ本体側の嵌入軸が嵌入されている組立状態で、例えば使用者がグリップ本体を掴んで大きな力で引っ張る等して、グリップ本体側の嵌入軸に大きな荷重が働くと、その嵌入軸が凹部に対しグリップ本体の長さ方向と略直交する方向に相対移動し、凹部の開放口と嵌入軸との間に介在されているシール材が圧縮されて、元の形状に戻らない程度まで潰れようとする。しかし、そのとき、嵌入軸外周面又は凹部内周面の一方に設けられている突起部が嵌入軸外周面又は凹部内周面の他方と当接して、その当接後は嵌入軸の凹部に対する相対移動が規制される。この嵌入軸の凹部に対する相対移動の規制により、シール材が元の形状に戻らない程度まで圧縮変するのは防止され、このシール材のシール性を確保でき、粘性剤の漏出を長期に亘り安定して確実に防いで、アシストグリップの作動の安定性及び信頼性を向上させることができる。
【００３３】
請求項６の発明では、上記嵌入軸は樹脂製で支持部の凹部に先端部を自由端として回動可能に嵌入されており、嵌入軸の先端部外面又は凹部の底部内面の一方には、嵌入軸又は凹部と同心状に突出するピボット部が形成されている一方、嵌入軸の先端部外面又は凹部の底部内面の他方には、嵌入軸の先端側が揺動可能となるように上記ピボット部を当接させるピボット当接部が形成されていることを特徴とする。
【００３４】
この構成により、グリップ本体の脚部における収容部の側壁の係止口部に回動不能に係止された樹脂製嵌入軸は、取付座における支持部の凹部内に嵌入軸先端部を自由端として回動可能に嵌入され、その基端部のみがグリップ本体の脚部に係止固定されているので、この嵌入軸の支持構造が片持ち状態となり、樹脂製のグリップ本体が成形時の収縮等に伴って変形し、その両脚部の軸心がそれぞれ対応する取付座の支持部の軸心に対しずれていても、そのずれを上記片持ち状態の嵌入軸の先端側自由端の相対変位によって吸収することができる。このことで、グリップ本体の回動をスムーズに行って、グリップ本体を使用位置から格納位置に確実に戻すことができるとともに、取付座の凹部に嵌入軸を両者間の隙間に粘性剤の密封性よく封入して、粘性剤が漏出するのを防止できる。
【００３５】
しかも、嵌入軸の先端部外面又は凹部の底部内面の一方にピボット部が突設され、このピボット部に対向する嵌入軸先端部外面又は凹部の底部内面の他方にはピボット当接部が形成されて、これらピボット部とピボット当接部との当接により嵌入軸の先端側が揺動可能となっているので、嵌入軸先端部の自由端を凹部の底部内面にピボット部とピボット当接部との当接により揺動可能に支持でき、嵌入軸の片持ち構造の機能を阻害することなく、その自由端である先端部を凹部の底部内面に安定して支持して、嵌入軸の回動のスムーズ化や粘性剤の漏出防止をより一層確実に行うことができる。よって、これらによりアシストグリップの作動の安定性及び信頼性を向上させることができる。
【００３６】
【発明の実施の形態】
図１１は本発明の実施形態に係る回動型の格納式アシストグリップＧを示し、このアシストグリップＧは、例えば車両における車室の側壁に車室内に臨むように取付固定される。
【００３７】
上記アシストグリップＧは、例えばＰＰ（ポリプロピレン樹脂）等からなる樹脂製のグリップ本体１と、例えばＰＯＭ（ポリアセタール）等からなる第１及び第２の１対の取付座１１，１２とを備えてなる。上記グリップ本体１は長尺バー状のもので、その長さ方向が例えば車体の前後方向と略一致するように配置されている。このグリップ本体１は長さ方向両端部が同じ方向に湾曲されて略コ字状をなし、その長さ方向両端部がそれぞれ第１及び第２脚部１ａ，１ｂとされている。
【００３８】
一方、図９及び図１０に示すように、各取付座１１，１２は車室の側壁の一部を構成する取付体としての車体パネルＰに表面側（車室側）から取付固定されている。この各取付座１１，１２の取付位置に対応する車体パネルＰにはボルト挿通孔Ｐ１が貫通形成され、車体パネルＰの裏面（背面）には上記ボルト挿通孔Ｐ１に対応してナットＮ（ウェルドナット）が溶接固定されている。
【００３９】
そして、上記グリップ本体１は、その両脚部１ａ，１ｂにてそれぞれ取付座１１，１２に対し回動可能に軸支されており、このような両脚部１ａ，１ｂでの軸支構造により、グリップ本体１は使用位置及び格納位置の間で回動し、使用位置にあるときには、図１、図９〜図１１に示すようにグリップ本体１の中間部が車室内方に突出して水平面からやや斜め下方に向いた状態となる一方、格納位置にあるときには、図２及び図７に示すように、グリップ本体１が上記使用位置から略９０°上向きに回動して車室側壁（車体パネルＰ）に沿った状態となる。
【００４０】
上記グリップ本体１の各脚部１ａ，１ｂにおいて、グリップ本体１が格納位置にあるときの車室側壁の車体パネルＰに対向する外面には、断面略矩形状に切り欠いてなる略半楕円形状の凹部からなる収容部２が形成されている。この各収容部２の周りには、グリップ本体１の長さ方向に対向する内外側壁２ａ，２ｂと、この内外側壁２ａ，２ｂの対向方向に直交する方向に対向し、脚部１ａ，１ｂの基部側及び先端側に位置する基部側及び先端側壁２ｃ，２ｄとが設けられ、内外側壁２ａ，２ｂ及び基部側壁２ｃは互いに略同じ高さであるが、先端側壁２ｄは、他の側壁２ａ〜２ｃに比べて低く形成されている。そして、グリップ本体１の格納位置で各収容部２内に取付座１１，１２の一部（取付座本体１３の先端部）を収容するようになっている。
【００４１】
上記グリップ本体１の第１脚部１ａ（図１１において右側のもの）と、この第１脚部１ａに対応する第１取付座１１との間には、図９に示すように、グリップ本体１を使用位置から格納位置に向かうように回動付勢する付勢手段としての捩りコイルばね７が、また第２脚部１ｂ（図１１において左側のもの）と、この第２脚部１ｂに対応する第２取付座１２との間には、図１、図２、図７及び図１０に示すように、グリップ本体１の回動に抵抗を付与するダンパ手段２４がそれぞれ設けられている。
【００４２】
上記第１及び第２取付座１１，１２はその大半が互いに同じ構造で、一部分のみの構造が異なる。この両取付座１１，１２の同じ構造の部分について説明すると、図１、図２、図７、図９及び図１０に示す如く、各取付座１１，１２は、車室側に開口する有底箱状の取付座本体１３を備えている。この箱状の取付座本体１３の平面視は、上記収容部２に対応する形状、つまり楕円（長円）を長径方向に２分割した略半楕円形状で、その開口周縁部には取付座本体１３の開口を閉じるためのリッド１４が薄肉ヒンジ１４ａにより一体に形成されている。取付座本体１３の底壁部にはボルト挿通孔１５が貫通形成されており、このボルト挿通孔１５を車体パネルＰのボルト挿通孔Ｐ１に一致させ、両ボルト挿通孔１５，Ｐ１に取付ボルトＢを挿通して、その先端部を車体パネルＰ裏面の上記ウェルドナットＮに螺合締結することにより、各取付座１１，１２が車体パネルＰに取付固定されている。
【００４３】
尚、１３ａは取付座本体１３の底部周りに突設されたフランジで、このフランジ１３ａは、車体パネルＰ表側のトリム材（図示せず）上にそれを覆うように配置される。
【００４４】
上記両取付座１１，１２の異なる部分の構造について説明すると、図９に示すように、上記捩りコイルばね７側の第１取付座１１において、その取付座本体１３の側壁のうち格納位置にあるグリップ本体１の脚部１ａ先端側に位置する側壁の開口側端部には、グリップ本体１の長さ方向に延びる中空円筒状の支持部１７が一体に形成され、この支持部１７の周壁には矩形状の開口１８が形成され、支持部１７の長さ方向両端壁部にはそれぞれ軸挿通孔１９，１９（１つのみ図示する）が同心状に設けられている。そして、支持部１７の両軸挿通孔１９，１９に支持軸８を挿通し、この支持軸８の両端部をそれぞれ上記グリップ本体１の第１脚部１ａにおける収容部２の内外側壁２ａ，２ｂに形成した軸支持穴（図示せず）に嵌入することで、グリップ本体１の第１脚部１ａを第１取付座１１に支持軸８を介して回動可能に支持するようにしている。
【００４５】
また、グリップ本体１の第１脚部１ａにおける収容部２の先端側壁２ｄにはばね受部３が、また取付座１１の支持部１７内面の一部にもばね受部２０がそれぞれ切り欠いて形成されている。そして、上記捩りコイルばね７は上記支持部１７内に支持軸８の周りに配置された状態で収容され、この捩りコイルばね７の一端部は上記第１脚部１ａにおけるばね受部３に、また他端部は第１取付座１１の支持部１７におけるばね受部２０にそれぞれ係合されており、この捩りコイルばね７のばね力によりグリップ本体１を使用位置から格納位置に向かう方向（図９及び図１０で反時計回り方向）に回動付勢している。
【００４６】
一方、図１、図２、図７及び図１０に示すように、上記ダンパ手段２４側の第２取付座１２において、その取付座本体１３の側壁のうち格納位置にあるグリップ本体１の脚部１ａ先端側に位置する側壁の開口側端部には、グリップ本体１の長さ方向に延びる有底円筒状の支持部２６が一体に形成され、この支持部２６はその内部に底部側に向かって小径となる略テーパ状の凹部２８を有し、この凹部２８の開放口は上記グリップ本体１の第２脚部１ｂにおける収容部２の内外側壁２ａ，２ｂのうちの外側壁２ｂ側に、また底部は内側壁２ａ側にそれぞれ位置している。また、この支持部２６の外底面（凹部２８の開放口と反対側の面）には軸部２７が凹部２８と同心状に一体に突設されている。尚、２７ａは軸部２７の先端面に設けられたひけ防止用穴で、成形時の軸部２７のひけを防止するためのものである。
【００４７】
そして、上記グリップ本体１の第２脚部１ｂには、その収容部２の内外２つの側壁２ａ，２ｂのうち上記第２取付座１２における支持部２６の凹部２８の開放口に面する外側壁２ｂに略半楕円形状（他の形状でもよい）の係止口部４が凹部２８と同心状に貫通形成されている。一方、内側壁２ａには軸支持穴５が係止口部４（凹部２８）と同心状に形成されており、この軸支持穴５に上記支持部２６の軸部２７が回動可能に嵌入されている。尚、上記とは逆に、内側壁２ａに係止口部を、また外側壁２ｂに軸支持穴をそれぞれ設けてもよい。
【００４８】
さらに、上記支持部２６の凹部２８には例えばＰＯＭ等からなる樹脂製の嵌入軸３１が略円柱状の嵌入部３１ａにてその先端側から回動可能に嵌入されている。この嵌入軸３１の嵌入部３１ａは先細りテーパ状のもので、その外周面と凹部２８の内周面との間、及び嵌入部３１ａ（嵌入軸３１）の先端部と凹部２８の底部との間にそれぞれ略一定の隙間があけられており、嵌入軸３１は凹部２８に対し、上記第２脚部１ｂにおける収容部２の外側壁２ｂの外側から該外側壁２ｂの係止口部４を挿通して嵌入される。
【００４９】
嵌入軸３１の基端部には上記係止口部４の開口と同じ形状のリッド部３２が形成され、このリッド部３２は嵌入部３１ａの基端部に対し、周方向に間隔をあけて配置した４つの薄肉板状の連結部３１ｂ，３１ｂ，…により連結され、この各連結部３１ｂの外周面にはそれぞれ係止突起３３が設けられており、嵌入軸３１を先端側から第２取付座１２の凹部２８内に嵌入して、その基端部の各連結部３１ｂを係止突起３３と共に外側壁２ｂの係止口部４を潜らせて撓み変形させながら、その係止突起３３を外側壁２ｂの内側に位置付けることにより、嵌入軸３１の基端部が係止口部４に対し、該係止口部４をリッド部３２で塞いだ状態で回動不能（回動一体）に係止されており、このことで、嵌入軸３１は凹部２８の底部側に位置する先端部を自由端として回動可能に凹部２８に嵌入されている。
【００５０】
そして、上記嵌入軸３１の嵌入部３１ａ先端面には、その先端面を先細りテーパ状に突出させることで嵌入軸３１と同心状に突出するピボット部３５が形成されている。
【００５１】
一方、凹部２８の底部内面は、嵌入軸３１の先端面と対応するように中心部が部分的に凹陥され、この凹陥部分の中心部には、嵌入軸３１の先端側が揺動可能となるように上記ピボット部３５を当接させるピボット当接部３６が形成されている。このピボット当接部３６は、嵌入軸３１において係止口部４に係止固定された基端部を略中心とする円弧面からなっており、ピボット当接部３６でピボット部３５を摺接させることで、嵌入軸３１の先端側を凹部２８内で揺動可能としている。
【００５２】
上記凹部２８内に位置する嵌入軸３１の嵌入部３１ａ外周面には、その嵌入部３１ａの基端から先端面まで嵌入軸３１の軸線方向に沿って延びる４つの切欠溝３８，３８，…が円周方向に等間隔をあけて設けられている。この各切欠溝３８は、図３に示すように断面円形状のもので（尚、円形以外の他の断面形状でもよいのは勿論である）、その溝開口部３８ａは嵌入部３１ａのテーパ形状によりその先端側に向かって次第に拡大している（図６参照）。そして、上記嵌入部３１ａの外周面及び上記凹部２８の内周面の間の隙間と、各切欠溝３８内とは上記溝開口部３８ａを介して互いに連通している。
【００５３】
さらに、上記第２取付座１２の支持部２６における凹部２８の内周面と、この凹部２８内に嵌入された嵌入軸３１の嵌入部３１ａ外周面との間のテーパ状の隙間、嵌入部３１ａの先端部と凹部２８の底部との間の隙間、及び各切欠溝３８内は互いに連通する粘性剤充填空間Ｓを構成しており、この粘性剤充填空間Ｓには例えばシリコン等の高粘度（１０００００ｃｐｓ以上が望ましい）の液体からなる粘性剤Ｌが充填されている。
【００５４】
また、上記凹部２８の開放口と嵌入軸３１との間に上記粘性剤充填空間Ｓからの粘性剤Ｌの流出を阻止するＯリング等からなるシール材４０が介在されている。具体的には、上記嵌入軸３１の外周面において上記凹部２８の開放口近くの内周面に対応する部分には環状溝４１が嵌入軸３１の全周に亘って形成され、この環状溝４１に上記シール材４０が嵌め込まれて装着されている。このシール材４０の外周面は凹部２８の開放口近くの内周面にあるシール面４７（図５参照）に圧接しており、このシール材４０のシール面４７との圧接により、上記第２取付座１２の支持部２６における凹部２８の内周面と嵌入軸３１の嵌入部３１ａ外周面との間の隙間、嵌入部３１ａ先端部と凹部２８底部との間の隙間、及び各切欠溝３８内の粘性剤充填空間Ｓを封止して、その空間Ｓからの粘性剤Ｌの流出を阻止するようにしている。
【００５５】
そして、以上の第２取付座１２の支持部２６における凹部２８の内周面と嵌入軸３１の嵌入部３１ａ外周面との間の隙間、嵌入部３１ａ先端部と凹部２８の底部との間の隙間、及び各切欠溝３８内の粘性剤充填空間Ｓに充填されている粘性剤Ｌにより、グリップ本体１が回動するときの回動抵抗となるトルクを発生するダンパ手段２４が形成されている。
【００５６】
図１、図４〜図６に示すように、上記嵌入軸３１の外周面にはその環状溝４１の長さ方向（周方向）の１箇所でかつ上記嵌入部３１ａ外周面の所定の１つの切欠溝３８の延長線上の位置に、溝幅を拡げてなる拡幅部４２が形成されている。この拡幅部４２は環状溝４１の一部の溝幅を嵌入軸３１の嵌入方向と反対側、つまり先端部から基端部側に向かう側に他の部分よりもシール材４０の外径の略２倍程度だけ円弧状に拡げたもので、その底部と環状溝４１の底部とは面一に形成されており、この拡幅部４２において、環状溝４１に嵌装されているシール材４０を部分的に環状溝４１から、凹部２８に嵌入される嵌入軸３１の嵌入方向と反対側に相対移動可能として湾曲するようにしている。
【００５７】
また、嵌入軸３１には、図４〜図６に示すようにエア抜き溝４３が上記拡幅部４２の底部と該拡幅部４２に対応する位置における環状溝４１の底部の一部とに亘り互い連続するように形成されている。このエア抜き溝４３は、拡幅部４２の底部と環状溝４１の底部の一部とを嵌入軸３１の軸線方向に沿って凹陥してなるもので、エア抜き溝４３において上記環状溝４１側の端部４３ａは環状溝４１の溝幅の例えば略中央部に開口し、拡幅部４２側の端部４３ｂは該拡幅部４２において最も拡幅された部分の縦壁４２ａまで延びている。
【００５８】
そして、上記拡幅部４２の縦壁４２ａには嵌入軸３１の略半径方向に延びるエア放出溝４４が設けられ、このエア放出溝４４の一端（内端）は上記エア抜き溝４３の拡幅部４２側の端部４３ｂに連続する一方、他端は拡幅部４２よりも嵌入軸３１の基端部側の外周面に開口していて大気に開放されている。
【００５９】
さらに、上記第２取付座１２における支持部２６の凹部２８の開放口近傍位置の内周面には４つの支持部側エア抜き溝４６，４６，…が円周方向に等間隔をあけて設けられている（図５及び図８参照）。この各支持部側エア抜き溝４６は凹部２８の開放口近傍の内周面にグリップ本体１の長さ方向に延びるように凹設されたもので、その一端は、凹部２８に嵌入軸３１を嵌入した状態のシール材４０の位置よりも開放口側（シール面４７の幅方向略中央部）に開口する一方、他端は凹部２８の開放口端面に開口している。そして、この各支持部側エア抜き溝４６の位置は、図８に示すように、グリップ本体１を例えば格納位置（尚、他の設定位置でもよい）に位置付けて嵌入軸３１を凹部２８に嵌入して組み付けるときに嵌入軸３１における嵌入部３１ａ外周面の４つの切欠溝３８，３８，…の略延長線上の位置にそれぞれ配置されている。
【００６０】
尚、このようにグリップ本体１の格納位置で嵌入軸３１を凹部２８に嵌入して組み付ける際、各支持部側エア抜き溝４６の位置が切欠溝３８の略延長線上の位置に位置するのが好ましいが、製造誤差や組付誤差等を考慮すると、図８に仮想線にて示すように、支持部側エア抜き溝４６，４６，…と切欠溝３８，３８，…とは円周方向にずれていてもよく、そのずれ角度θは最大で１５°とするのが望ましい。
【００６１】
また、図１、図２及び図５に示すように、上記凹部２８においてその開放口近傍位置の内周面には、嵌入軸３１が凹部２８内に嵌入された状態で環状溝４１における嵌入軸基端部側の外側面に対応した位置（シール面４７の幅方向外側位置）に、凹部２８の内壁部を全周に亘りその半径方向内側（中心側）に突出させてなる環状突条からなる規制部４９が一体に形成され、この規制部４９は上記環状溝４１に嵌め込まれているシール材４０と当接することで、嵌入軸３１が凹部２８に嵌入された状態で凹部２８の開放口側へ移動するのを規制部４９によりシール材４０を介して阻止するようにしている。尚、上記規制部４９は、凹部２８の内壁部に間欠的に配置して形成してもよい。
【００６２】
さらに、図１、図２、図４〜図７に示す如く、上記嵌入軸３１における嵌入部３１ａの基部外周面には、嵌入部３１ａの外周面を全周に亘りその半径方向外側に所定高さだけ突出させてなる環状突条からなる突起部５０が一体に形成されており、この突起部５０は、嵌入軸３１と第２取付座１２の支持部２６とがグリップ本体１の長さ方向と略直交する方向に相対移動したときに突起部５０に対向する凹部２８内周面に当接することで、シール材４０が所定以上に圧縮変形して圧壊するのを規制するようになっている。尚、この突起部５０は、嵌入軸３１の周方向に間欠的に配置して形成してもよく、また凹部２８の開放口近傍位置の内周面に、嵌入軸３１外周面と当接可能に設けることもできる。
【００６３】
上記実施形態のアシストグリップＧをグリップ本体１の第２脚部１ｂにおいて車体パネルＰに組み付ける作業について説明すると、図７に示すように、予め、嵌入軸３１外周の環状溝４１にシール材４０を嵌め込んで装着するとともに、第２取付座１２における支持部２６の凹部２８内に開放口から必要量の粘性剤Ｌを注入機（図示せず）により注入しておく。このときの粘性剤Ｌの充填量（必要量）は、嵌入軸３１の嵌入部３１ａ外周面と凹部２８の内周面との間の隙間、嵌入部３１ａ先端部と凹部２８の底部との間の隙間、及び４つの切欠溝３８，３８，…内を合わせた粘性剤充填空間Ｓの容積よりも若干多めに設定する。こうすると、嵌入軸３１を凹部２８内に嵌入して第２取付座１２に組み付けたときに、粘性剤充填空間Ｓから粘性剤Ｌが少し漏れ出る程度になり、エア抜きを行いながら粘性剤充填空間Ｓの各隙間及び各切欠溝３８内に粘性剤Ｌが充填される。
【００６４】
そして、まず、第２取付座１２の軸部２７の先端部をグリップ本体１の第２脚部１ｂにおける収容部２の内側壁２ａの軸支持穴５に嵌挿し、次いで、グリップ本体１を第２取付座１２に対し格納位置に位置付けた状態で、その収容部２の外側壁２ｂにおける係止口部４に上記嵌入軸３１を先端側から挿通して、その嵌入部３１ａを第２取付座１２の凹部２８内に開放口から嵌入し、この嵌入軸３１の基端部を係止口部４に係止固定する。このとき、シール材４０は、上記規制部４３によりその外周側が押圧されて若干圧縮されながら該規制部４３を通過し、その後に復元してシール材としてのシール機能を有するようになる。
【００６５】
そして、この嵌入軸３１が第２取付座１２の凹部２８内に適正位置まで完全に嵌入されたときに、上記シール材４０の外周部が凹部２８の開放口近傍内周面のシール面４７に圧接して、このシール面４７と嵌入軸３１外周面との間の隙間が相対回転可能に気密状に閉塞され、上記嵌入軸３１の嵌入部３１ａ外周面と凹部２８の内周面との間の隙間、嵌入部３１ａの先端部と凹部２８の底部との間の隙間、及び各切欠溝３８内の粘性剤充填空間Ｓに上記粘性剤Ｌが封入される。
【００６６】
このようにして嵌入軸３１を凹部２８内に嵌入するとき、その嵌入の開始に伴い、その嵌入に伴って凹部２８内の底部に充填されている粘性剤Ｌの一部が嵌入軸３１外周面の各切欠溝３８に充填されながら、その切欠溝３８の溝開口部３８ａから凹部２８内周面との間の隙間に流出する。また、凹部２８内の底部の粘性剤Ｌの残部は、上記各切欠溝３８の溝開口部３８ａから流出した粘性剤Ｌと共に、凹部２８の内周面と嵌入軸３１の嵌入部３１ａ外周面との間に流入して凹部２８の開放口に向かう。
【００６７】
そして、図５（ａ）及び図６（ａ）に示すように、凹部２８内に残留していたエアは、上記のようにして移動する粘性剤Ｌに押されて凹部２８の開放口に押し出されるが、このエアの排出は、図５（ｂ）に示す如く、シール材４０が凹部２８の開放口近傍の内周面に当接して粘性剤充填空間Ｓを閉じるまで自然に行われる。そして、そのシール材４０の粘性剤充填空間Ｓを閉じる（この閉じた状態を図５（ｃ）に示す）までに残留エアが排出されないと、その粘性剤充填空間Ｓに粘性剤Ｌと共にエアが残留することとなる。
【００６８】
しかし、上記シール材４０を嵌め込んだ環状溝４１には部分的に、嵌入軸３１の凹部２８への嵌入方向と反対側に拡がる拡幅部４２が形成され、この拡幅部４２の底部と拡幅部４２に対応する位置の環状溝４１の底部とに亘り互い連続するエア抜き溝４３が形成され、このエア抜き溝４３の拡幅部４２側の端部４３ｂに拡幅部４２縦壁のエア放出溝４４が一端で連続し、エア放出溝４４の他端は大気に開放されているので、上記のように嵌入軸３１の嵌入の途中でシール材４０が粘性剤充填空間Ｓを閉じたとしても、その後、嵌入軸３１が凹部２８内にさらに押し込まれると、その空間Ｓの内圧が増大し、この内圧の増大により、図５（ｃ）及び図６（ｂ）に示すように、シール材４０が拡幅部で部分４２的に嵌入軸３１の嵌入方向と反対側に相対移動するように湾曲する（見掛け上、拡幅部４２にあるシール材４０が嵌入軸３１の嵌入に追従せずに略停止するようになる）。このシール材４０の拡幅部４２での環状溝４１からの相対移動に伴い、上記エア抜き溝４３の環状溝４１側の端部４３ａが移動状態のシール材４０よりも上記粘性剤充填空間Ｓに開放されて連通するようになる。このことで、その粘性剤充填空間Ｓにエアが残留していても、そのエアは上記粘性剤充填空間Ｓに開放されたエア抜き溝４３に流入し、このエア抜き溝４３からその拡幅部４２側の端部４３ｂに連続するエア放出溝４４を経て大気に放出される。尚、このときに、上述の如く、エアの排出後に粘性剤Ｌの一部が排出されるようにその粘性剤Ｌの充填量を多めに設定しておけば、エアの排出がさらに確実になる。
【００６９】
しかも、上記環状溝４１における拡幅部４２は、嵌入軸３１外周面にある４つの切欠溝３８，３８，…の１つの延長線上の位置に設けられているので、粘性剤充填空間Ｓ、特に拡幅部４２に対応する切欠溝３８内の残留エアは、上記のようにして切欠溝３８の溝開口部３８ａから出て凹部２８の開放口に向かう粘性剤Ｌの動きに押されて切欠溝３８から排出され、その後に切欠溝３８の延長上の拡幅部４２で湾曲したシール材４０の内周側を抜け、エア抜き溝４３ないしエア放出溝４４を経て大気に放出される。つまり、この切欠溝３８と拡幅部４２との一致により残留エアをスムーズに排出することができる。
【００７０】
さらに、上記凹部２８の開放口近傍位置の内周面に４つの支持部側エア抜き溝４６，４６，…が設けられ、この４つの支持部側エア抜き溝４６，４６，…は、グリップ本体１が格納位置にあるときに嵌入軸３１外周面の切欠溝３８，３８，…の略延長線上の位置（又はずれ角度θでθ≦１５°の範囲）に配置されているので、上記のようにグリップ本体１の格納位置で凹部２８内に嵌入軸３１の嵌入部３１ａを嵌入して組み付ける際、切欠溝３８が支持部側エア抜き溝４６に略一致し、凹部２８の内周面と嵌入部３１ａの外周面との間の隙間からなる粘性剤充填空間Ｓのうちの特に各切欠溝３８内の残留エアを、シール材４０の内周側に対応する支持部側エア抜き溝４６からスムーズに排出することができる。
【００７１】
このようにして粘性剤充填空間Ｓから残留エアがエア抜き溝４３及びエア放出溝４４により抜け出すと、そのことによって粘性剤充填空間Ｓの内圧が下がるので、図５（ｄ）に示すように、上記拡幅部４２に移動していたシール材４０の一部が拡幅部４２から環状溝４１に戻る。しかし、このとき、シール材４０及び該シール材４０の周辺部品の製作誤差等によりシール材４０が戻らない場合を考慮して、嵌入軸３１を凹部２８内で回転させれば、シール材４０の戻りがスムーズに行われる。そして、嵌入軸３１が凹部２８内の適正位置まで完全に嵌入されると、シール材４０が凹部２８の開放口近傍の内周面のシール面４７に圧接して粘性剤充填空間Ｓに残留エアのない粘性剤が封入される。
【００７２】
よって、粘性剤充填空間Ｓからエアを確実に放出して、そのエア抜きを有効に行うことができ、嵌入軸３１が凹部２８内に完全に嵌入されてシール材４０により粘性剤充填空間Ｓが密封された状態では、その空間Ｓにエア混在のない粘性剤Ｌが充填され、その粘性剤Ｌによる良好な制動作用が発揮され、グリップ本体１の回動に対する大きなダンパ効果が確実に安定して得られ、アシストグリップＧの作動の安定性及び信頼性を向上させることができる。
【００７３】
このようにして第２取付座１２が組み付けられたアシストグリップＧは、第２取付座１２における取付座本体１３のボルト挿通孔１５に取付ボルトＢを挿通して第２取付座１２を車体パネルＰ裏面のナットＮに締結することにより、その第２取付座１２を介して車体パネルＰに組み付けられる。その後、第２取付座１２のヒンジ式のリッド１４を閉じることで、取付ボルトＢを覆って隠す。
【００７４】
一方、第１取付座１１においても、グリップ本体１の第１脚部１ａが支持軸８により回動可能に支持されるとともに、捩りコイルばね７が装着される。その後、第１取付座１１は上記第２取付座１２と略一緒にかつ同様にして車体パネルＰに組み付けられる。
【００７５】
したがって、この実施形態のアシストグリップＧにおいては、通常はグリップ本体１が捩りコイルばね７の付勢力により回動付勢されて格納位置に位置付けられており、このグリップ本体１の格納位置では、その各脚部１ａ，１ｂの収容部２内にそれぞれ取付座１１，１２の一部が収容されている。そして、車両の乗員がアシストグリップＧを使用するとき、そのグリップ本体１を手で掴んで捩りコイルばね７の付勢力に抗して使用位置に回動させればよい。また、このアシストグリップＧの使用停止時には、乗員がグリップ本体１から手を離すと、そのグリップ本体１は捩りコイルばね７の付勢力により取付座１１，１２に対し使用位置から格納位置へ回動しながら戻る。
【００７６】
このようなグリップ本体１の使用位置から格納位置への回動時（上記格納位置から使用位置への回動時にも同様のことが生じる）、グリップ本体１の第２脚部１ｂにおける収容部２の内側壁２ａが第２取付座１２の軸部２７回りに、またこの収容部２の外側壁２ｂに回動不能に係止されている嵌入軸３１が第２取付座１２における支持部２６の凹部２８内でそれぞれ回動するが、上記嵌入軸３１の嵌入部３１ａ外周面と凹部２８の内周面との間の隙間、嵌入部３１ａの先端部と凹部２８の底部との間の隙間、及び各切欠溝３８内部からなる粘性剤充填空間Ｓにそれぞれ粘性剤Ｌが充填されているので、この粘性剤Ｌの粘性により上記嵌入軸３１及びそれと一体化されているグリップ本体１の回動に抵抗（トルク）が生じる。このことで、グリップ本体１がゆっくりと使用位置から格納位置へ回動することとなり、グリップ本体１が車体パネルＰに強く当たることによる叩き音を発生させることがなく、その動きに高級感が得られる。
【００７７】
そのとき、上記粘性剤Ｌは、第２取付座１２における支持部２６の凹部２８の内周面と嵌入軸３１の嵌入部３１ａ外周面との間の隙間、及び嵌入部３１ａの先端部と凹部２８の底部との間の隙間のみならず、嵌入部３１ａの外周面に嵌入軸３１の軸線方向に延びるように設けられた切欠溝３８，３８，…内にも充填されているので、凹部２８内周面と嵌入部３１ａ外周面との間の隙間、及び嵌入部３１ａの先端部と凹部２８の底部との間の隙間のみに充填される場合に比べ、その粘性剤Ｌの充填量が増大する。このため、嵌入軸３１の凹部２８への組付時に注入機により粘性剤Ｌを上記凹部２８に注入するとき、その粘性剤Ｌの注入量の誤差（ばらつき）が生じても、その誤差による注入量の変動は、注入量（充填量）が少ない場合に比べて小さくなる。これにより粘性剤Ｌの充填量不足を有効になくし、グリップ本体１の回動に対するダンパ効果を高めることができる。
【００７８】
しかも、上記凹部２８内周面と嵌入軸３１の嵌入部３１ａ外周面との間の隙間と、嵌入部３１ａ外周面の嵌入軸軸線方向に延びる切欠溝３８，３８，…内とは、該各切欠溝３８の溝開口部３８ａを介して互いに連通しており、嵌入軸３１が凹部２８に対して相対回転する際、凹部２８内周面と嵌入部３１ａ外周面との間の隙間に充填されている粘性剤Ｌが凹部２８内周面に追従しようとするのに対し、嵌入部３１ａ外周面の切欠溝３８，３８，…内に充填されている粘性剤Ｌはその切欠溝３８内部で嵌入軸３１と共に回転移動するので、上記溝開口部３８ａ近傍で両粘性剤Ｌ，Ｌ間に剪断作用が働くようになり、この粘性剤Ｌ，Ｌ間の剪断によりグリップ本体１の回動抵抗を増大させて、そのダンパ効果をさらに高めることができる。
【００７９】
そして、これら粘性剤Ｌの増量によるダンパ効果と粘性剤Ｌの剪断によるダンパ効果との相乗作用により、グリップ本体１の回動に対する大きなダンパ効果が確実に安定して得られ、よってアシストグリップＧの作動の安定性及び信頼性を向上させることができる。
【００８０】
また、凹部２８の開放口近傍位置の内周面に規制部４９が設けられているので、製造誤差や組付誤差等によるがたつきにより嵌入軸３１が凹部２８の開放口側へ抜け出ようとしても、その嵌入軸３１の移動は、環状溝４１に嵌め込まれているシール材４０を介して規制部４９に阻止される。このことにより、嵌入軸３１の凹部２８からの抜け出しが規制され、よってアシストグリップＧの作動の安定性及び信頼性を向上させることができる。
【００８１】
さらに、第２取付座１２における支持部２６の凹部２８内にグリップ本体１側の嵌入軸３１が嵌入され、嵌入軸３１と凹部２８との間の粘性剤充填空間Ｓに粘性剤Ｌが充填されている組立状態で、例えば使用者がグリップ本体１を掴んでぶら下がる等して、グリップ本体１側の嵌入軸３１に大きな荷重が働くと、その嵌入軸３１が凹部２８に対しグリップ本体１の長さ方向と略直交する方向に相対移動し、凹部２８の開放口と嵌入軸３１との間に介在されているシール材４０が圧縮されて、元の形状に戻らない程度まで潰れようとする。しかし、そのとき、嵌入軸３１外周面に設けられている突起部５０が凹部２８内周面と当接して、その当接後は嵌入軸３１の凹部２８に対する相対移動が規制される。この嵌入軸３１の凹部２８に対する相対移動の規制により、シール材４０が元の形状に戻らない程度まで圧縮変するのは防止され、このシール材４０のシール性を確保でき、粘性剤Ｌの漏出を安定して確実に防いで、アシストグリップＧの作動の安定性及び信頼性を向上させることができる。
【００８２】
また、上記グリップ本体１の第２脚部１ｂにおける収容部２の外側壁２ｂの係止口部４に基端部にて回動不能に係止されている樹脂製嵌入軸３１は、第２取付座１２における支持部２６の凹部２８内に嵌入軸３１先端部を自由端として回動可能に嵌入され、その基端部のみが第２脚部１ｂの収容部２の外側壁２ｂに固定されて、嵌入軸３１の支持構造が片持ち構造となっている。このため、樹脂製のグリップ本体１が成形時の収縮等に伴い変形していて、その両脚部１ａ，１ｂの軸心がそれぞれ対応する取付座１１，１２の支持部１７，２６の軸心とずれていたとしても、そのずれを上記片持ち状態の嵌入軸３１の先端側自由端の相対変位によって吸収することができる。その結果、グリップ本体１の回動をスムーズに行うことができ、グリップ本体１を捩りコイルばね７の付勢力によって使用位置から格納位置に確実に戻すことができる。しかも、上記軸心のずれの吸収により、嵌入軸３１側のシール材４０を凹部２８内周面のシール面４７に有効に圧接させて、第２取付座１２の凹部２８と嵌入軸３１との間の粘性剤充填空間Ｓに粘性剤Ｌを確実に封入でき、粘性剤Ｌの漏出を防止することができる。これらにより、格納式アシストグリップＧの信頼性や作動安定性の向上を図ることができる。
【００８３】
また、上記嵌入軸３１の先端部外面にピボット部３５が突設され、この嵌入軸３１先端部外面に対向する凹部２８底部内面の中心部にはピボット部３５を当接させるピボット当接部３６が形成されて、これらピボット部３５とピボット当接部３６との当接により嵌入軸３１の先端側が揺動可能となっているので、嵌入軸３１先端部の自由端を凹部２８の底部内面にピボット部３５とピボット当接部３６との当接により揺動可能に支持することができ、嵌入軸３１の片持ち構造の機能を阻害することなく、その自由端である先端部を凹部２８の底部内面に安定して支持して、嵌入軸３１の回動のスムーズ化や粘性剤Ｌの漏出防止をより一層確実に行うことができる。
【００８４】
（他の実施形態）
尚、上記実施形態では、環状溝４１の周方向の１箇所に拡幅部４２を設けているが、複数の拡幅部を環状溝４１の周方向に間隔をあけて設けることもできる。その場合、それら複数の拡幅部は、上記実施形態のように嵌入部３１ａ外周面の切欠溝３８，３８，…の延長線上の位置に同じ軸線上の位置となるように形成することが好ましい。
【００８５】
また、上記実施形態では、グリップ本体１の一方の脚部である第２脚部１ｂに嵌入軸３１を回転一体に係合固定し、この嵌入軸３１を第２取付座１２の凹部２８に嵌入するようにしているが、第１脚部１ａと第１取付座１１との間、及び第２脚部１ｂと第２取付座１２との間の双方にそれぞれ上記と同様なダンパ手段を設けることもできる。
【００８６】
さらに、上記実施形態では、各取付座１１，１２を車体パネルＰに対し取付ボルトＢのナットＮへの螺合締結により取付固定しているが、この他、例えば特開２００１―３２８４８０号公報等に示されるように、取付座に、車体パネルに開口した取付孔に挿入されてその取付孔周縁に係止する係止片を突設し、この係止片をロックピンの挿入により広げて取付孔周縁に係止する爪嵌合方式により取付座を車体パネルに取付固定するようにすることもできる。
【００８７】
また、上記実施形態は、車両用の格納式アシストグリップＧの例であるが、本発明は車両以外のアシストグリップにも適用することができる。
【００８８】
【発明の効果】
以上説明したように、請求項１の発明によると、固定体に取付固定される１対の取付座と、それに脚部にて回動可能に軸支された樹脂製のグリップ本体と、このグリップ本体を使用位置から格納位置に回動付勢する付勢手段とを備え、脚部のうちグリップ本体が格納位置にあるときの固定体との対向面に、グリップ本体の長さ方向に対向する２つの側壁を有しかつグリップ本体の格納位置で取付座の一部を収容する収容部が切り欠いて形成された回動型の格納式アシストグリップにおいて、その少なくとも一方の取付座と脚部との間に設けられて、グリップ本体の使用位置から格納位置への回動を抑制するダンパ手段として、取付座の支持部に凹部を形成し、この凹部に、先端部が凹部の底部側に位置しかつ基端部が収容部の側壁の係止口部に挿通されて回動不能に係止された嵌入軸を回動可能に嵌入し、嵌入軸の外周面にその軸線方向に延びる少なくとも１つの切欠溝を設け、少なくとも凹部の内周面と嵌入軸の外周面との間の隙間、及び切欠溝の内部からなる粘性剤充填空間に粘性剤を充填し、凹部の開放口と嵌入軸との間に粘性剤充填空間からの粘性剤の流出を阻止するシール材を介在させたことにより、粘性剤の充填量不足をなくして、グリップ本体の回動に対するダンパ効果を高めることができるとともに、嵌入軸が凹部に対し相対回転する際に、凹部内周面と嵌入軸外周面との間の隙間に充填されている粘性剤と、嵌入軸外周面の切欠溝内に充填されている粘性剤との間に剪断作用を働かせてダンパ効果をさらに高めることができ、グリップ本体の回動に対する大きなダンパ効果が確実に安定して得られて、アシストグリップの作動の安定性及び信頼性の向上を図ることができる。
【００８９】
請求項２の発明によると、嵌入軸外周面にシール材を嵌め込むための環状溝を設け、この環状溝において上記切欠溝の延長線上の位置の少なくとも１箇所に、シール材の一部を環状溝から凹部への嵌入軸の嵌入方向と反対側へ相対移動可能とする拡幅部を形成し、この拡幅部の底部と環状溝の底部とに亘り互い連続するエア抜き溝を形成して、このエア抜き溝の拡幅部側の端部を、拡幅部の縦壁に設けたエア放出溝を介して大気に開放可能としたことにより、嵌入軸を凹部内に嵌入したときに、その粘性剤充填空間の内圧の増大によりシール材を拡幅部で部分的に嵌入軸の嵌入方向と反対側に相対移動させてエア抜き溝を粘性剤充填空間に連通させ、粘性剤充填空間に残留したエアをスムーズにエア抜き溝ないしエア放出溝を経て大気に確実に放出でき、粘性剤充填空間にエア混在のない粘性剤を充填して、グリップ本体の回動に対する大きなダンパ効果が確実に安定して得られ、アシストグリップの作動の安定性及び信頼性の向上を図ることができる。
【００９０】
請求項３の発明によると、凹部の開放口近傍位置の内周面でかつグリップ本体が所定位置にあるときの上記切欠溝の略延長線上の位置に支持部側エア抜き溝を設けたことにより、グリップ本体を所定位置に位置付けて嵌入軸を凹部に嵌入することで、粘性剤充填空間のうちの特に切欠溝内の残留エアを支持部側エア抜き溝からも排出でき、嵌入軸と凹部内との間に及び切欠溝にエア混在のない粘性剤を充填して、グリップ本体の回動に対する大きなダンパ効果が確実に安定して得られ、アシストグリップの作動の安定性及び信頼性の向上を図ることができる。
【００９１】
請求項４の発明によると、凹部の開放口近傍位置の内周面に、上記シール材との当接により嵌入軸が凹部に嵌入された状態で上記開放口側へ移動するのを阻止する規制部を設けたことにより、製造誤差や組付誤差等によるがたつきにより嵌入軸が凹部の開放口側へ抜け出ようとするのをシール材を介して規制部で規制でき、よってアシストグリップの作動の安定性及び信頼性の向上を図ることができる。
【００９２】
請求項５の発明によると、凹部の開放口近傍位置の嵌入軸外周面又は凹部内周面の一方に、嵌入軸と支持部とがグリップ本体の長さ方向と略直交する方向に相対移動したときに嵌入軸外周面又は凹部内周面の他方と当接して、シール材の所定以上の圧縮変形を規制する突起部を設けたことにより、例えば使用者がグリップ本体を掴んで大きな力で引っ張る等して、グリップ本体側の嵌入軸に大きな荷重が働き、嵌入軸が凹部に対しグリップ本体の長さ方向と略直交する方向に相対移動しても、凹部の開放口と嵌入軸との間に介在されているシール材が元の形状に戻らない程度まで圧縮変形して圧壊しようとするのを防止してシール性を確保でき、粘性剤の漏出を長期間に亘り安定して確実に防いで、アシストグリップの作動の安定性及び信頼性の向上を図ることができる。
【００９３】
請求項６の発明によると、樹脂製の嵌入軸を支持部の凹部に先端部が自由端となるように回動可能に嵌入し、嵌入軸の先端部外面又は凹部の底部内面の一方に、嵌入軸又は凹部と同心状に突出するピボット部を形成する一方、嵌入軸の先端部外面又は凹部の底部内面の他方に、嵌入軸の先端側が揺動可能となるようにピボット部を当接させるピボット当接部を形成したことにより、樹脂製のグリップ本体が成形時の収縮等に伴って変形して、その両脚部の軸心がそれぞれ対応する取付座の支持部の軸心とがずれていても、そのずれを片持ち状態の嵌入軸の先端側自由端の相対変位によって吸収でき、グリップ本体の回動をスムーズに行ってグリップ本体を使用位置から格納位置に戻すことができるとともに、取付座の凹部に嵌入軸を両者間の粘性剤充填空間に粘性剤を密封性よく封入して粘性剤が漏出するのを防止でき、よって、格納式アシストグリップの信頼性及び作動安定性の向上を図ることができる。
【図面の簡単な説明】
【図１】図１１のＩ−Ｉ線拡大断面図である。
【図２】グリップ本体が格納位置にあるときの状態を示す図１相当図である。
【図３】嵌入軸の嵌入部の断面形状を示す拡大断面図である。
【図４】嵌入軸にシール材を取り付けた状態の拡大断面図である。
【図５】嵌入軸を第２取付座の凹部に嵌入するときに凹部内から残留エアが排出される動きを示す断面図である。
【図６】嵌入軸を第２取付座の凹部に嵌入するときにシール材の移動により凹部内から残留エアが排出される動きを示す正面図である。
【図７】嵌入軸を組み付ける状態を示す図２相当図である。
【図８】嵌入軸を凹部内に嵌入するときの嵌入軸外周面の切欠溝と凹部開口端の支持部側エア抜き溝との周方向の位置関係を示す断面図である。
【図９】図１１のＩＸ−ＩＸ線拡大断面図である。
【図１０】図１１のＸ−Ｘ線拡大断面図である。
【図１１】本発明の実施形態に係る格納式アシストグリップの全体構成をグリップ本体が使用位置にある状態で示す斜視図である。
【符号の説明】
Ｇ　格納式アシストグリップ
Ｐ　車体パネル（固定体）
１　グリップ本体
１ａ　第１脚部
１ｂ　第２脚部
２　収容部
２ａ　内側壁
２ｂ　外側壁
４　係止口部
７　捩りコイルばね（付勢手段）
１１　第１取付座
１２　第２取付座
２４　ダンパ手段
２６　支持部
２８　凹部
３１　嵌入軸
３１ａ　嵌入部
３５　ピボット部
３６　ピボット当接部
３８　切欠溝
３８ａ　溝開口部
４０　シール材
４１　環状溝
４２　拡幅部
４３　エア抜き溝
４３ａ　環状溝側端部
４３ｂ　拡幅部側端部
４４　エア放出溝
４６　支持部側エア抜き溝
４７　シール面
４９　規制部
５０　突起部
Ｓ　粘性剤充填空間
Ｌ　粘性剤
θ　ずれ角度[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a retractable assist grip that is stored by being rotated from a use position to a storage position when not in use, and particularly to a technical field related to measures for improving the stability and reliability of its operation.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a retractable assist grip of this type, a pair of mounting seats fixed to a fixed body such as a vehicle body panel, and a long elongate shape rotatably supported by these mounting seats with legs. 2. Description of the Related Art A grip body and a biasing means such as a coil spring for biasing the grip body from a use position to a storage position are known.
[0003]
As disclosed in, for example, Japanese Patent Application Laid-Open No. 2001-58535, there has been proposed a device in which a damper means in which a high-viscosity viscous agent is sealed is integrally incorporated between a grip body and a mounting seat.
[0004]
In this proposal, the grip body is rotatably supported on the mounting seat by the legs at both ends in the longitudinal direction, and each of the legs is attached to the mounting seat in a state where the grip body is in the retracted position. A cylinder having a housing part for housing a part thereof, a recess having a center axis in the longitudinal direction of the grip body, and an insertion shaft protruding from the bottom surface of the recess in the mounting seat on the side where the damper means is provided. A fitting shaft (spacer) having a fitting portion rotatably fitted in the concave portion and having a fitting portion for fitting the insertion shaft into the concave portion is provided between the two side walls facing each other in the length direction of the grip body of the housing portion. While engaging with the side wall of the recess opening side, the other side wall of the housing portion is rotatably supported on the cylindrical portion on the bottom side of the recess, and between the outer peripheral surface of the fitting shaft and the inner peripheral surface of the concave portion, And a viscous agent is interposed between the outer peripheral surface of the insertion shaft and the inner peripheral surface of the fitting portion. So that cause resistance to the rotation of the fitting shaft i.e. the grip body by viscosity.
[0005]
[Problems to be solved by the invention]
By the way, in a structure in which a fitting shaft as a spacer is fitted into the concave portion of the mounting seat and the gap between them is filled with a viscous agent, as in the above proposed example, the damping effect (damper effect) by the viscous agent is increased. In order to improve the stability and reliability of the operation of the assist grip, it is desirable to increase the filling amount of the viscous agent as much as possible.
[0006]
In addition, when the fitting shaft is fitted into the recess of the mounting seat and assembled, for example, the recess is filled with a viscous agent in advance, and the work of fitting the fitting shaft into the recess filled with the viscous agent is performed. At this time, it is desirable to sufficiently remove air from the space for filling the viscous agent, which is a gap between the inner peripheral surface of the concave portion and the outer peripheral surface of the fitting shaft, so that only the viscous agent is filled in the space, The stability and reliability of the operation of the assist grip can be improved by enhancing the braking effect of the viscous agent. However, in practice, it is difficult to reliably release air from the space when the fitting shaft is fitted, and there is a limit to enhancing the braking effect.
[0007]
Furthermore, the fitting shaft is fitted into the recess and fitted to the mounting seat.However, the fitting shaft may come out to the opening side of the recess due to rattling due to a manufacturing error, a mounting error, or the like. If the fitting shaft is not fitted and held in the recess at the proper position, leakage of the viscous agent will be caused, and measures are taken to improve the stability and reliability of the operation of the assist grip. Preferably.
[0008]
Further, for example, when the user grips the grip body and pulls with a large force, a large load acts on the fitting shaft on the grip body side, and the fitting shaft is substantially perpendicular to the length direction of the grip body with respect to the concave portion of the support portion. When the seal material is relatively moved in the direction, the seal material may be compressed and deformed to such an extent that the seal material does not return to the original shape with the movement, and a crushing state may occur. Also in this case, the sealing property of the sealing material is deteriorated, and the viscous agent leaks from the gap, which causes a problem in improving the stability and reliability of the operation of the assist grip.
[0009]
The present invention has been made in view of such points, and its purpose is to fit the fitting shaft of the grip body side into the recess of the mounting seat as described above, and to fit between the inner circumferential surface of the recess and the outer circumferential surface of the fitting shaft. An object of the present invention is to improve the stability and reliability of the operation of the assist grip by improving the structure of the retractable assist grip filled with a viscous agent.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a pair of mounting seats fixed to a fixed body, and a long elongate shaft rotatably supported by these mounting seats with legs. It is assumed that the retractable assist grip includes a grip body and a biasing unit that rotationally biases the grip body from the use position to the storage position.
[0011]
When the grip body is in the storage position, the leg has two side walls facing the lengthwise direction of the grip body when the grip body is in the storage position. An accommodation portion for accommodating a part of the mounting seat is cut out and formed.
[0012]
Further, at least one of the pair of mounting seats is formed with a support portion having a bottomed cylindrical recess extending in the length direction of the grip body, and an opening of the recess is provided in the accommodation portion. The bottom is located on one side of the two side walls, and the bottom is located on the other side.
[0013]
Further, one of the two side walls of the accommodating portion that faces the opening of the concave portion has a locking hole formed therethrough concentrically with the concave portion, and the tip of the concave portion of the supporting portion has a concave portion. A fitting shaft, which is positioned at the bottom side of the housing and whose base end is inserted into the locking opening of the side wall of the housing portion and locked so as not to rotate, is rotatably fitted.
[0014]
Further, at least one notch groove extending in the axial direction of the fitting shaft is provided on an outer peripheral surface of the fitting shaft located in the concave portion, and a gap between at least an inner peripheral surface of the fitting portion and an outer peripheral surface of the fitting shaft is provided. And a seal for filling the viscous agent into the viscous agent-filled space formed inside the cutout groove, and between the opening of the concave portion and the fitting shaft to prevent the viscous agent from flowing out of the viscous-agent-filled space. Material is interposed.
[0015]
According to the above configuration, the grip body is rotatably supported by the legs on the pair of mounting seats fixed to the fixed body, and the grip body is rotated from the use position to the storage position by the urging means. Be energized. A support having a recess is provided on at least one of the pair of mounting seats, and a leg of the grip body corresponding to the mounting seat is rotatably fitted into the recess. The fitting shaft has its base end inserted into the locking opening of the side wall of the housing portion in the leg portion and is locked non-rotatably, and a gap between the inner peripheral surface of the concave portion and the outer peripheral surface of the fitting shaft, Since the viscous agent is interposed in a space filled with the viscous agent formed in the cutout groove on the outer peripheral surface of the fitting shaft in a state sealed with a seal material, a damper action is obtained by the viscosity of the viscous agent. Accordingly, when the grip body rotates from the use position to the storage position, resistance occurs in the rotation of the grip body, so that the grip body slowly rotates, and a high-class feeling is obtained in the movement. In the storage position of the grip body, a part of the mounting seat is housed in the housing portion of the leg.
[0016]
At this time, the viscous agent is provided not only in the gap between the inner peripheral surface of the concave portion of the support portion in the mounting seat and the outer peripheral surface of the insertion shaft but also on the outer peripheral surface of the insertion shaft so as to extend in the axial direction of the insertion shaft. Since the notched groove is also filled, the filling amount of the viscous agent increases as compared with the case where only the gap between the inner peripheral surface of the concave portion and the outer peripheral surface of the fitting shaft is filled with the viscous agent. Therefore, when an injection machine or the like injects the viscous agent into the concave portion when assembling the fitting shaft into the concave portion in the support portion, even if an error (variation) occurs in the injected amount, the fluctuation of the injected amount due to the error is not changed. The amount (filling amount) is smaller than that in the above case. As a result, the filling amount of the viscous agent can be prevented from being insufficient, and the damper effect on the rotation of the grip body can be enhanced.
[0017]
Moreover, the gap between the inner peripheral surface of the concave portion and the outer peripheral surface of the insertion shaft and the inside of the notch groove extending in the axial direction of the insertion shaft on the outer peripheral surface of the insertion shaft communicate with each other, so that the insertion shaft rotates relative to the concave portion. At this time, while the viscous agent filled in the gap between the inner peripheral surface of the concave portion and the outer peripheral surface of the insertion shaft tries to follow the inner peripheral surface of the concave portion, the viscous agent is filled in the cutout groove of the outer peripheral surface of the insertion shaft. Since the viscous agent moves together with the fitting shaft inside the notch groove, a shearing action acts between the two viscous agents, and the shearing action between the viscous agents increases the rotational resistance of the grip body, thereby further increasing the damper effect. Can be enhanced.
[0018]
The synergistic effect of the damper effect due to the increase in the amount of the viscous agent and the damper effect due to the shearing of the viscous agent reliably and stably obtains a large damper effect with respect to the rotation of the grip body. And reliability can be improved.
[0019]
According to the second aspect of the present invention, an annular groove is formed in the outer peripheral surface of the fitting shaft corresponding to a position near the opening of the recess, and a sealing material is fitted into the annular groove. Further, in the annular groove, at least at one position on the extension of the notch groove, the seal member is partially movable relative to the annular groove in a direction opposite to a fitting direction of a fitting shaft fitted in the concave portion. The widened portion is formed so that the groove width is wider than other portions, and an air vent groove that is continuous with the bottom of the widened portion and the bottom of the annular groove at a position corresponding to the widened portion is formed. Is characterized in that one end of the vertical wall is connected to the end of the air vent groove on the side of the widened portion, and the other end is provided with an air discharge groove open to the atmosphere.
[0020]
According to this configuration, when the fitting shaft on the grip body side is fitted into the concave portion of the support portion in the mounting seat, a necessary amount of a viscous agent is filled in a bottom portion (rear portion) in the concave portion, and a position near the opening of the concave portion is provided. When the fitting shaft is fitted into the recess while the sealing material is fitted in the annular groove formed in the outer peripheral surface of the fitting shaft corresponding to the fitting shaft, the viscous agent filled in the bottom of the recess along with the fitting is removed. Most of the fluid flows into the notch groove on the outer peripheral surface of the insertion shaft, and the remaining part flows out into the gap between the outer peripheral surface of the insertion shaft and the inner peripheral surface of the recess in parallel with the filling of the notch groove. In addition, a part of the viscous agent that has flowed into the notch groove also flows from the opening of the notch groove into the gap between the outer peripheral surface of the fitting shaft and the inner peripheral surface of the concave portion.
[0021]
The air remaining in the recess is pushed by the viscous agent that moves as described above and is pushed out through the opening of the recess. Unless the viscous agent filling space, which is a gap between the surfaces, is discharged before closing, the viscous agent remains in the space together with the viscous agent.
[0022]
At this time, a widened portion is formed partially in the annular groove in which the sealing material is fitted, the widened portion expanding in a direction opposite to the fitting direction of the fitting shaft into the concave portion, and a bottom portion of the widened portion and a position corresponding to the widened portion. A continuous air vent groove is formed over the bottom of the annular groove of the air vent groove, and the air vent groove of the wide wall vertical wall is connected at one end to the end of the air vent groove on the wide part side, and the other end of the air vent groove is formed. Is open to the atmosphere, even if the sealing material closes the viscous agent filling space between the outer peripheral surface of the insertion shaft and the inner peripheral surface of the concave portion during the insertion of the insertion shaft as described above, Is further pushed into the concave portion, the internal pressure in the space increases, and the increase in the internal pressure causes the sealing material to bend at the widened portion so as to partially move in the direction opposite to the fitting direction of the fitting shaft. With the relative movement of the sealing material from the annular groove at the widened portion, the end of the air vent groove on the annular groove side is opened to the viscous agent filling space and communicates with the sealing material in the moving state. . With this, even if air remains in the viscous agent filling space, the air flows into the air vent groove opened to the viscous agent filling space, and from the air vent groove to the end on the widened portion side. It is released to the atmosphere via a continuous air release groove.
[0023]
Moreover, since the widened portion in the annular groove is provided at a position on the extension of the notch groove on the outer peripheral surface of the fitting shaft, that is, corresponding to the notch groove, the residual air in the notch groove is reduced as described above. When pushed out of the notch groove by the movement of the viscous agent toward the opening of the recess, it is discharged from the notch groove, and then crosses the inner peripheral side of the curved sealing material at the widened portion on the extension of the notch groove. Is released to the atmosphere through an air vent groove or an air discharge groove. By matching the notch groove with the widened portion, the residual air in the notch groove can be smoothly discharged, so that the air can be reliably discharged from the viscous agent filling space and the air can be effectively removed, In a state where the fitting shaft is completely fitted into the concave portion and the space filled with the viscous agent is sealed by the sealing material, the space is filled with the viscous agent without air mixture, and a good braking effect is exhibited. Therefore, a large damper effect on the rotation of the grip body is reliably and stably obtained, and the operation stability and reliability of the assist grip can be improved.
[0024]
When the residual air escapes from the viscous agent filling space through the air release groove and the air release groove, the internal pressure of the viscous agent filling space decreases, and a part of the seal material that has moved to the widening portion is annularly formed from the widening portion. Return to the groove.
[0025]
According to a third aspect of the present invention, in the retractable assist grip according to the first or second aspect of the present invention, the inner peripheral surface of the recess near the opening and near the extension of the notch groove when the grip body is at a predetermined position. At least one support-port-side air vent groove is provided at one end, the one end being open to the open port side from the position of the seal member in a state where the insertion shaft is fitted into the concave portion, and the other end being open to the open port end surface of the concave portion. It is characterized by having been done.
[0026]
According to this configuration, the support portion side air vent groove on the inner peripheral surface near the opening of the concave portion is substantially the same as the cutout groove on the outer peripheral surface of the fitting shaft when the grip body is at a predetermined position (for example, the storage position) with respect to the concave portion. Since the grip body is provided at a position on the extension line, the grip body is positioned at the predetermined position, and the fitting shaft is fitted into the concave portion. As a result, the air remaining in the viscous agent filling space, particularly in the notch groove, can be smoothly discharged from the support part side air vent groove. Therefore, also in this case, the fitting shaft is completely fitted into the recess, and the viscous agent-filled space is filled with the viscous agent without air mixture, and a good braking effect by the viscous agent is exerted. A large damper effect is surely and stably obtained, and the stability and reliability of the operation of the assist grip can be improved.
[0027]
According to a fourth aspect of the present invention, in the retractable assist grip same as the premise of the first aspect of the present invention, a length of the grip main body is provided on a surface of the leg portion facing the fixed body when the grip main body is in the storage position. A housing portion that has two side walls facing each other in the direction and that partially houses the mounting seat at the storage position of the grip body is formed by cutting out, and at least one of the pair of mounting seats includes: A supporting portion having a bottomed cylindrical recess extending in the length direction of the grip body is formed, and an opening of the recess is provided on one of the two side walls of the housing portion, and the bottom is provided on the other side. A locking opening is formed through one of the two side walls of the housing portion facing the opening of the concave portion so as to pass therethrough concentrically with the concave portion. For the recess, make sure that the tip is located on the bottom side of the recess. A fitting shaft, whose base end is inserted into the locking opening of the side wall of the housing portion and locked non-rotatably, is rotatably fitted, and at least the inner peripheral surface of the recess and the outer peripheral surface of the fitting shaft. A viscous agent is filled in a viscous agent-filled space formed by a gap between the grooves, and an annular groove is formed in the outer peripheral surface of the fitting shaft near the opening of the concave portion. A sealing material for preventing the outflow of the viscous agent is fitted.
[0028]
A restricting portion is provided on the inner peripheral surface of the concave portion near the open port to abut on the sealing material to prevent the fitting shaft from moving toward the open port in a state of being fitted into the concave portion. It is characterized by having.
[0029]
According to this configuration, since the restricting portion that comes into contact with the sealing material is provided on the inner peripheral surface in the vicinity of the opening of the concave portion, the fitting shaft is moved to the opening of the concave portion due to rattling due to a manufacturing error or an assembly error. Even if the fitting shaft attempts to escape, the movement of the fitting shaft is prevented by the restricting portion via the seal material fitted in the annular groove, and the fitting shaft is prevented from falling out of the concave portion. Therefore, the stability and reliability of the operation of the assist grip can be improved.
[0030]
According to the fifth aspect of the present invention, in the retractable assist grip same as the premise of the first aspect of the present invention, a surface of the leg facing the fixed body when the grip body is in the storage position is provided in a length direction of the grip body. A receiving portion having two side walls facing each other and receiving a part of the mounting seat at a storage position of the grip body is formed by notching, and at least one of the pair of mounting seats has a grip. A support portion having a bottomed cylindrical concave portion extending in the length direction of the main body is formed, and an opening of the concave portion is provided on one of the two side walls of the housing portion, and the bottom portion is provided on the other side. A locking opening is formed on one of the two side walls of the housing portion facing the opening of the recess, and the locking opening is formed concentrically with the recess. The tip to the bottom of the recess and The fitting shaft, which is inserted into the locking opening of the side wall of the housing portion and is locked non-rotatably, is rotatably fitted, and at least between the inner peripheral surface of the concave portion and the outer peripheral surface of the fitting shaft. Is filled with a viscous agent, and a sealing material is interposed between the opening of the recess and the fitting shaft to prevent the viscous agent from flowing out of the viscous agent filling space.
[0031]
Then, when the fitting shaft and the supporting portion relatively move in one of the outer circumferential surface or the inner circumferential surface of the fitting shaft near the opening of the concave portion in a direction substantially orthogonal to the length direction of the grip body, the fitting shaft. A protrusion is provided which is in contact with the other one of the outer peripheral surface or the inner peripheral surface of the concave portion and restricts a compressive deformation of the seal material beyond a predetermined value.
[0032]
According to this configuration, in an assembled state in which the fitting shaft on the grip body side is fitted into the concave portion of the support portion in the mounting seat, for example, the user grasps the grip body and pulls with a large force, and the like. When a large load acts on the insertion shaft, the insertion shaft relatively moves with respect to the recess in a direction substantially perpendicular to the length direction of the grip body, and the sealing material interposed between the opening of the recess and the insertion shaft is removed. It is compressed and tries to collapse to the point where it does not return to its original shape. However, at that time, the projection provided on one of the outer peripheral surface of the insertion shaft or the inner peripheral surface of the concave portion comes into contact with the other of the outer peripheral surface of the insertion shaft or the inner peripheral surface of the concave portion, and after the abutment, the protrusion of the inserted shaft with respect to the concave portion. Relative movement is regulated. By restricting the relative movement of the fitting shaft with respect to the recess, the sealing material is prevented from being compressed and deformed to the extent that it does not return to its original shape, the sealing property of the sealing material can be ensured, and leakage of the viscous agent is stabilized for a long time As a result, the stability and reliability of the operation of the assist grip can be improved.
[0033]
In the invention of claim 6, the fitting shaft is made of resin, and is rotatably fitted into the concave portion of the support portion with the distal end portion being a free end. One of the outer surface of the distal end portion of the fitting shaft or the inner surface of the bottom portion of the concave portion is provided with: The pivot portion is formed so as to protrude concentrically with the fitting shaft or the concave portion, while the pivot portion is formed on the other of the outer surface of the distal end portion of the fitting shaft or the inner surface of the bottom portion of the concave portion so that the distal end side of the fitting shaft can swing. A pivot abutting portion for abutment is formed.
[0034]
With this configuration, the resin fitting shaft non-rotatably locked to the locking opening of the side wall of the housing portion in the leg portion of the grip main body has the free end of the fitting shaft inserted into the concave portion of the support portion in the mounting seat. It is rotatably fitted, and only its base end is locked and fixed to the leg of the grip body, so that the support structure of this fitted shaft becomes cantilevered, and the resin grip body shrinks during molding. Even if the axes of both legs are displaced with respect to the axes of the corresponding support portions of the mounting seat, the displacement is caused by the relative displacement of the free end on the distal end side of the cantilevered insertion shaft. Can be absorbed by As a result, the grip body can be smoothly rotated, the grip body can be reliably returned from the use position to the storage position, and the fitting shaft is inserted into the concave portion of the mounting seat, and the sealing property of the viscous agent is inserted into the gap therebetween. It can be sealed well to prevent leakage of the viscous agent.
[0035]
In addition, a pivot portion projects from one of the outer surface of the distal end of the fitting shaft or the inner surface of the bottom of the concave portion, and a pivot contact portion is formed on the other of the outer surface of the distal end of the fitting shaft or the inner surface of the concave portion facing the pivot portion. Since the distal end side of the fitting shaft can swing by the contact between the pivot portion and the pivot contact portion, the free end of the fitting shaft can be pivoted to the inner surface of the bottom of the recess with the pivot portion and the pivot contact portion. Can be pivotally supported by the abutment, and the free end of the insertion shaft is stably supported on the inner surface of the bottom of the recess without disturbing the function of the cantilever structure of the insertion shaft, and the rotation of the insertion shaft is achieved. And the leakage of the viscous agent can be more reliably performed. Thus, the stability and reliability of the operation of the assist grip can be improved.
[0036]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 11 shows a rotatable retractable assist grip G according to an embodiment of the present invention. The assist grip G is attached and fixed to, for example, a side wall of a vehicle compartment of a vehicle so as to face the vehicle compartment.
[0037]
The assist grip G includes a resin grip body 1 made of, for example, PP (polypropylene resin) and a pair of first and second mounting seats 11, 12 made of, for example, POM (polyacetal). . The grip body 1 is in the form of a long bar, and is disposed so that its length direction substantially coincides with, for example, the front-rear direction of the vehicle body. The grip body 1 has both ends in the length direction curved in the same direction to form a substantially U-shape, and both ends in the length direction are first and second legs 1a and 1b, respectively.
[0038]
On the other hand, as shown in FIGS. 9 and 10, each of the mounting seats 11 and 12 is mounted and fixed to the vehicle body panel P as a mounting body that constitutes a part of the side wall of the vehicle compartment from the front side (the passenger compartment side). . A bolt insertion hole P1 is formed through the vehicle body panel P corresponding to the mounting position of each of the mounting seats 11 and 12, and a nut N (weld) corresponding to the bolt insertion hole P1 is formed on the back surface (rear surface) of the vehicle body panel P. Nut) is fixed by welding.
[0039]
The grip body 1 is rotatably supported on the mounting seats 11 and 12 by its two legs 1a and 1b, respectively. With such a shaft supporting structure of the two legs 1a and 1b, the grip body is gripped. The main body 1 rotates between the use position and the storage position. When the main body 1 is in the use position, the intermediate portion of the grip main body 1 projects into the vehicle interior and is slightly oblique from the horizontal plane as shown in FIGS. 2 and 7, when the grip body 1 is in the retracted position, the grip main body 1 is rotated upward by approximately 90 ° from the use position, and the side wall of the vehicle compartment (the vehicle body panel P). Along the line.
[0040]
In each of the leg portions 1a and 1b of the grip body 1, a substantially semi-elliptical shape in which a cross section is cut into a substantially rectangular shape is formed on an outer surface facing the vehicle body panel P of a side wall of the vehicle compartment when the grip body 1 is in the storage position. The accommodation part 2 which consists of a concave part is formed. Around each of the accommodating portions 2, inner and outer walls 2a and 2b opposing in the longitudinal direction of the grip body 1 oppose in a direction orthogonal to the opposing direction of the inner and outer walls 2a and 2b. The base side and the tip side walls 2c and 2d located on the base side and the tip side are provided, and the inner and outer walls 2a and 2b and the base side wall 2c have substantially the same height, but the tip side wall 2d is different from the other side walls 2a to 2d. It is formed lower than 2c. Then, at the storage position of the grip body 1, a part of the mounting seats 11 and 12 (the distal end portion of the mounting seat body 13) is housed in each housing portion 2.
[0041]
As shown in FIG. 9, between the first leg 1a (the right one in FIG. 11) of the grip body 1 and the first mounting seat 11 corresponding to the first leg 1a, as shown in FIG. A torsion coil spring 7 as a biasing means for rotating and biasing from the use position to the storage position corresponds to the second leg 1b (the left one in FIG. 11) and the second leg 1b. As shown in FIGS. 1, 2, 7, and 10, damper means 24 for providing resistance to the rotation of the grip body 1 are provided between the second mounting seat 12.
[0042]
Most of the first and second mounting seats 11 and 12 have the same structure, and only part of the structure is different. The parts of the same structure of the two mounting seats 11 and 12 will be described. As shown in FIGS. 1, 2, 7, 9 and 10, each of the mounting seats 11 and 12 has a bottomed opening that opens toward the passenger compartment. A box-shaped mounting seat body 13 is provided. The plan view of the box-shaped mounting seat body 13 is a shape corresponding to the housing portion 2, that is, a substantially semi-elliptical shape obtained by dividing an ellipse (an ellipse) into two in the major axis direction. A lid 14 for closing the opening 13 is integrally formed by a thin hinge 14a. A bolt insertion hole 15 is formed through the bottom wall portion of the mounting seat body 13 so that the bolt insertion hole 15 matches the bolt insertion hole P1 of the vehicle body panel P, and the mounting bolt B is inserted into both bolt insertion holes 15 and P1. The mounting seats 11 and 12 are mounted and fixed to the vehicle body panel P by screwing the distal end portion thereof into the weld nut N on the back surface of the vehicle body panel P.
[0043]
Reference numeral 13a denotes a flange protruding around the bottom of the mounting seat body 13, and this flange 13a is disposed on a trim material (not shown) on the front side of the vehicle body panel P so as to cover it.
[0044]
The structure of the different parts of the two mounting seats 11 and 12 will be described. As shown in FIG. 9, the first mounting seat 11 on the side of the torsion coil spring 7 is located at the storage position on the side wall of the mounting seat body 13. A hollow cylindrical support portion 17 extending in the longitudinal direction of the grip body 1 is integrally formed at the open end of the side wall located on the distal end side of the leg portion 1 a of the grip body 1. Is formed with a rectangular opening 18, and shaft insertion holes 19, 19 (only one is shown) are provided concentrically on both end walls of the support portion 17 in the longitudinal direction. Then, the support shaft 8 is inserted into both shaft insertion holes 19, 19 of the support portion 17, and both ends of the support shaft 8 are respectively connected to the inner and outer walls 2a, 2b of the accommodation portion 2 in the first leg 1a of the grip body 1. The first leg portion 1a of the grip body 1 is rotatably supported on the first mounting seat 11 via the support shaft 8 by being fitted into a shaft support hole (not shown) formed in the above.
[0045]
Further, a spring receiving portion 3 is cut out on the end side wall 2d of the housing portion 2 in the first leg portion 1a of the grip body 1, and a spring receiving portion 20 is cut out on a part of the inner surface of the support portion 17 of the mounting seat 11, respectively. Is formed. The torsion coil spring 7 is accommodated in the support portion 17 in a state of being disposed around the support shaft 8, and one end of the torsion coil spring 7 is attached to the spring receiving portion 3 of the first leg 1a. The other end is engaged with the spring receiving portion 20 of the support portion 17 of the first mounting seat 11, respectively, and the spring force of the torsion coil spring 7 moves the grip body 1 from the use position to the storage position (FIG. 9 and the counterclockwise direction in FIG. 10).
[0046]
On the other hand, as shown in FIGS. 1, 2, 7, and 10, in the second mounting seat 12 on the damper means 24 side, the leg of the grip body 1 in the storage position on the side wall of the mounting seat body 13. 1a, a cylindrical support portion 26 having a bottom and extending in the longitudinal direction of the grip body 1 is integrally formed at the open end of the side wall located at the tip end side, and the support portion 26 faces the bottom inside. The grip 28 has a substantially tapered concave portion 28 whose opening is located on the outer wall 2b side of the inner and outer walls 2a, 2b of the housing portion 2 in the second leg portion 1b of the grip body 1. The bottom is located on the inner wall 2a side. On the outer bottom surface of the support portion 26 (the surface opposite to the opening of the concave portion 28), a shaft portion 27 is provided so as to project integrally and concentrically with the concave portion 28. Reference numeral 27a denotes a sink prevention hole provided on the tip end surface of the shaft portion 27 for preventing the shaft portion 27 from sinking during molding.
[0047]
The second leg portion 1b of the grip body 1 has an outer wall facing the opening of the concave portion 28 of the support portion 26 in the second mounting seat 12 among the two inner and outer side walls 2a and 2b of the housing portion 2. A substantially semi-elliptical (or any other shape) locking opening 4 is formed in 2b so as to penetrate concentrically with the recess 28. On the other hand, a shaft support hole 5 is formed in the inner wall 2a concentrically with the locking opening 4 (recess 28), and the shaft portion 27 of the support portion 26 is rotatably fitted into the shaft support hole 5. Have been. Contrary to the above, a locking opening may be provided on the inner side wall 2a and a shaft support hole may be provided on the outer side wall 2b.
[0048]
Further, a resin fitting shaft 31 made of, for example, POM or the like is rotatably fitted into the concave portion 28 of the support portion 26 from a distal end side thereof at a substantially cylindrical fitting portion 31a. The fitting portion 31a of the fitting shaft 31 has a tapered shape and is tapered between its outer peripheral surface and the inner circumferential surface of the concave portion 28, and between the tip portion of the fitting portion 31a (the fitting shaft 31) and the bottom portion of the concave portion 28. The fitting shaft 31 is inserted into the recess 28 from the outside of the outer wall 2b of the housing 2 in the second leg 1b through the engagement opening 4 of the outer wall 2b. And inserted.
[0049]
A lid 32 having the same shape as the opening of the locking opening 4 is formed at the base end of the fitting shaft 31. The lid 32 is spaced apart from the base end of the fitting part 31 a in the circumferential direction. Are connected by four thin plate-shaped connecting portions 31b, 31b,..., Each of which is provided with a locking projection 33 on the outer peripheral surface thereof. The fitting projections 33 are fitted into the recesses 28 of the seat 12, and the connecting projections 31 b at the base end thereof are bent together with the locking projections 33 under the locking opening 4 of the outer wall 2 b to deform the locking projections 33. By being positioned inside the outer side wall 2b, the base end of the fitting shaft 31 cannot rotate (integrally rotate) with respect to the locking opening 4 with the locking opening 4 closed by the lid 32. As a result, the fitting shaft 31 has its distal end located on the bottom side of the concave portion 28. It is fitted to the rotatable recess 28 as derived end.
[0050]
A pivot portion 35 is formed on the distal end surface of the insertion portion 31a of the insertion shaft 31 so as to project concentrically with the insertion shaft 31 by projecting the distal end surface into a tapered shape.
[0051]
On the other hand, the center of the bottom inner surface of the concave portion 28 is partially recessed so as to correspond to the distal end surface of the fitting shaft 31, and the distal end side of the fitting shaft 31 can swing at the center of the concave portion. Is formed with a pivot contact portion 36 for contacting the pivot portion 35. The pivot contact portion 36 is formed of an arcuate surface whose center is substantially the center of the fitting shaft 31 that is locked and fixed to the lock port 4, and the pivot contact portion 36 slides the pivot portion 35. By doing so, the distal end side of the fitting shaft 31 can be swung within the recess 28.
[0052]
On the outer peripheral surface of the fitting portion 31a of the fitting shaft 31 located in the concave portion 28, four notches 38, 38,... Extending along the axial direction of the fitting shaft 31 from the base end to the tip end surface of the fitting portion 31a. They are provided at equal intervals in the circumferential direction. Each of the notches 38 has a circular cross section as shown in FIG. 3 (the cross sectional shape may be other than circular, of course), and the groove opening 38a has a tapered shape of the fitting portion 31a. , Gradually expanding toward the tip side (see FIG. 6). The gap between the outer peripheral surface of the fitting portion 31a and the inner peripheral surface of the concave portion 28 and the inside of each cutout groove 38 communicate with each other via the groove opening 38a.
[0053]
Further, a tapered gap between the inner peripheral surface of the concave portion 28 in the support portion 26 of the second mounting seat 12 and the outer peripheral surface of the fitting portion 31a of the fitting shaft 31 fitted in the concave portion 28, the fitting portion 31a The gap between the tip of the recess 28 and the bottom of the recess 28 and the interior of each notch groove 38 constitute a viscous agent filling space S communicating with each other. (Preferably 100000 cps or more).
[0054]
In addition, a sealing member 40 such as an O-ring for preventing the viscous agent L from flowing out from the viscous agent filling space S is interposed between the opening of the concave portion 28 and the fitting shaft 31. Specifically, an annular groove 41 is formed on the outer peripheral surface of the insertion shaft 31 at a portion corresponding to the inner peripheral surface near the opening of the concave portion 28 over the entire periphery of the insertion shaft 31. The seal member 40 is fitted and mounted on the base member. The outer peripheral surface of the sealing member 40 is in pressure contact with a sealing surface 47 (see FIG. 5) on the inner peripheral surface near the opening of the concave portion 28. The gap between the inner peripheral surface of the concave portion 28 in the support portion 26 of the mounting seat 12 and the outer peripheral surface of the fitting portion 31a of the fitting shaft 31, the gap between the tip of the fitting portion 31a and the bottom portion of the recess 28, and each notch groove 38 The inside of the space S filled with the viscous agent is sealed so as to prevent the viscous agent L from flowing out of the space S.
[0055]
Then, a gap between the inner peripheral surface of the concave portion 28 in the support portion 26 of the second mounting seat 12 and the outer peripheral surface of the fitting portion 31a of the fitting shaft 31, between the tip of the fitting portion 31a and the bottom of the recess 28. The gap and the viscous agent L filled in the viscous agent filling space S in each notch groove 38 form the damper means 24 that generates torque serving as rotational resistance when the grip body 1 rotates. .
[0056]
As shown in FIGS. 1 and 4 to 6, the outer peripheral surface of the fitting shaft 31 is located at one location in the length direction (circumferential direction) of the annular groove 41 and a predetermined one of the outer peripheral surfaces of the fitting portion 31 a. At a position on the extension of the notch groove 38, a widened portion 42 is formed by expanding the groove width. The widened portion 42 has a groove width of a part of the annular groove 41 on the side opposite to the insertion direction of the insertion shaft 31, that is, on the side from the distal end toward the base end side, the outer diameter of the seal material 40 is smaller than that of the other part. The bottom portion and the bottom portion of the annular groove 41 are formed so as to be approximately twice as large as an arc, and the bottom portion and the bottom portion of the annular groove 41 are formed flush with each other. In order to be able to relatively move from the annular groove 41 to the opposite side to the fitting direction of the fitting shaft 31 fitted into the concave portion 28, it is curved.
[0057]
As shown in FIGS. 4 to 6, the fitting shaft 31 has an air vent groove 43 extending over the bottom of the widened portion 42 and a part of the bottom of the annular groove 41 at a position corresponding to the widened portion 42. It is formed so as to be continuous. The air vent groove 43 is formed by recessing the bottom of the widened portion 42 and a part of the bottom of the annular groove 41 along the axial direction of the fitting shaft 31. The end 43a is open at, for example, a substantially central portion of the groove width of the annular groove 41, and the end 43b on the widened portion 42 side extends to the vertical wall 42a of the widest portion in the widened portion 42.
[0058]
The vertical wall 42a of the widened portion 42 is provided with an air discharge groove 44 extending substantially in the radial direction of the fitting shaft 31. One end (inner end) of the air discharge groove 44 is formed by the widened portion 42 of the air vent groove 43. The other end is open to the outer peripheral surface on the base end side of the fitting shaft 31 with respect to the widened portion 42 while being open to the atmosphere.
[0059]
Further, on the inner peripheral surface of the second mounting seat 12 near the opening of the concave portion 28 of the support portion 26, four support portion side air vent grooves 46, 46, ... are provided at equal intervals in the circumferential direction. (See FIGS. 5 and 8). Each of the support-port-side air vent grooves 46 is recessed on the inner peripheral surface near the opening of the concave portion 28 so as to extend in the longitudinal direction of the grip body 1. The opening is located on the opening side (substantially the center of the sealing surface 47 in the width direction) from the position of the sealing member 40 in the fitted state, and the other end is opened on the opening end face of the recess 28. Then, as shown in FIG. 8, the position of each support portion side air vent groove 46 is such that the grip main body 1 is positioned at, for example, the storage position (other setting positions may be used) and the fitting shaft 31 is fitted into the concave portion 28. Are arranged at positions substantially on the extension of the four cutout grooves 38 on the outer peripheral surface of the insertion portion 31a of the insertion shaft 31.
[0060]
When the fitting shaft 31 is fitted into the concave portion 28 at the storage position of the grip body 1 in this manner, the position of each support portion side air vent groove 46 is positioned substantially on the extension of the cutout groove 38. In consideration of manufacturing errors and assembly errors, as shown by phantom lines in FIG. 8, the support-side air vent grooves 46, 46,... And the notch grooves 38, 38,. It may be shifted, and the shift angle θ is desirably set to 15 ° at the maximum.
[0061]
As shown in FIGS. 1, 2 and 5, the fitting shaft 31 in the annular groove 41 is fitted on the inner peripheral surface of the recess 28 near the opening thereof in a state where the fitting shaft 31 is fitted in the recess 28. At the position corresponding to the outer surface on the base end side (outer position in the width direction of the sealing surface 47), an annular ridge formed by projecting the inner wall portion of the recess 28 radially inward (center side) over the entire circumference. The restricting portion 49 is integrally formed, and the restricting portion 49 comes into contact with the sealing material 40 fitted in the annular groove 41, thereby opening the concave portion 28 in a state where the fitting shaft 31 is fitted in the concave portion 28. The movement to the side is prevented by the restricting portion 49 via the sealing material 40. Note that the restricting portion 49 may be formed by being arranged intermittently on the inner wall portion of the concave portion 28.
[0062]
Further, as shown in FIGS. 1, 2, and 4 to 7, the outer peripheral surface of the insertion portion 31a of the insertion shaft 31 is provided with a predetermined height over the entire circumference in a radially outward direction. A protrusion 50 formed of an annular ridge is formed integrally, and the protrusion 50 is formed such that the fitting shaft 31 and the support 26 of the second mounting seat 12 are aligned in the longitudinal direction of the grip body 1. By contacting the inner peripheral surface of the concave portion 28 facing the protrusion 50 when relatively moved in a direction substantially orthogonal to the direction, the seal member 40 is restricted from being compressed and deformed to a predetermined degree or more and crushed. . The protrusion 50 may be formed by being intermittently arranged in the circumferential direction of the fitting shaft 31, and can be in contact with the outer circumferential surface of the fitting shaft 31 on the inner circumferential surface of the concave portion 28 near the opening. Can also be provided.
[0063]
The work of assembling the assist grip G of the above embodiment to the vehicle body panel P at the second leg 1b of the grip body 1 will be described. As shown in FIG. At the same time, the required amount of the viscous agent L is injected into the concave portion 28 of the support portion 26 of the second mounting seat 12 from the opening through an injecting machine (not shown). At this time, the filling amount (required amount) of the viscous agent L is determined by the gap between the outer peripheral surface of the insertion portion 31a of the insertion shaft 31 and the inner peripheral surface of the concave portion 28, and the gap between the tip of the inserted portion 31a and the bottom portion of the concave portion 28. Are set slightly larger than the volume of the viscous agent filling space S including the four cutout grooves 38, 38,... By doing so, when the fitting shaft 31 is fitted into the concave portion 28 and assembled to the second mounting seat 12, the viscous agent L slightly leaks from the viscous agent filling space S, and the viscous agent filling is performed while bleeding air. Each of the gaps in the space S and the inside of each of the notched grooves 38 are filled with the viscous agent L.
[0064]
Then, first, the distal end of the shaft portion 27 of the second mounting seat 12 is inserted into the shaft support hole 5 of the inner wall 2a of the housing portion 2 in the second leg portion 1b of the grip body 1, and then the grip body 1 is moved to the second position. 2 With the fitting shaft 31 inserted from the distal end side into the locking opening 4 in the outer wall 2b of the housing portion 2 in a state where the fitting portion 31a is located at the storage position with respect to the mounting seat 12, the fitting portion 31a is inserted into the second mounting seat. The fitting shaft 31 is fitted into the concave portion 28 through an opening, and the base end of the fitting shaft 31 is locked and fixed to the locking opening 4. At this time, the sealing member 40 passes through the restricting portion 43 while being pressed slightly on the outer peripheral side by the restricting portion 43 and slightly compressed, and then restores to have a sealing function as a sealing material.
[0065]
When the fitting shaft 31 is completely fitted into the concave portion 28 of the second mounting seat 12 to an appropriate position, the outer peripheral portion of the seal member 40 is brought into contact with the seal surface 47 on the inner peripheral surface near the opening of the concave portion 28. By pressing, the gap between the sealing surface 47 and the outer peripheral surface of the insertion shaft 31 is airtightly closed so as to be relatively rotatable, and the gap between the outer peripheral surface of the insertion portion 31a of the insertion shaft 31 and the inner peripheral surface of the concave portion 28 is formed. , The gap between the tip of the fitting portion 31a and the bottom of the concave portion 28, and the viscous agent filling space S in each cutout groove 38, the viscous agent L is sealed.
[0066]
When the fitting shaft 31 is fitted into the concave portion 28 in this manner, a part of the viscous agent L filled in the bottom of the concave portion 28 with the fitting starts with the start of the fitting. While being filled in each of the notch grooves 38, it flows out from the groove opening 38a of the notch groove 38 into the gap between the notch groove 38 and the inner peripheral surface of the recess 28. The remaining portion of the viscous agent L at the bottom in the concave portion 28, together with the viscous agent L flowing out from the groove opening 38a of each of the cutout grooves 38, forms the inner peripheral surface of the concave portion 28 and the outer peripheral surface of the fitting portion 31a of the fitting shaft 31. Flows toward the opening of the recess 28.
[0067]
Then, as shown in FIGS. 5A and 6A, the air remaining in the concave portion 28 is pushed by the viscous agent L moving as described above, and is pushed out to the opening of the concave portion 28. However, as shown in FIG. 5B, the air is naturally discharged until the sealing material 40 comes into contact with the inner peripheral surface near the opening of the concave portion 28 and closes the viscous agent filling space S. If the residual air is not exhausted by the time the closed space S of the sealing material 40 is closed (this closed state is shown in FIG. 5C), the air together with the viscous agent L is injected into the space S. Will remain.
[0068]
However, in the annular groove 41 in which the sealing material 40 is fitted, a widened portion 42 is formed which partially expands in a direction opposite to the fitting direction of the fitting shaft 31 into the concave portion 28, and a bottom portion of the widened portion 42 and a widened portion are formed. A continuous air vent groove 43 is formed over the bottom of the annular groove 41 at a position corresponding to the air vent groove 42. Is continued at one end, and the other end of the air discharge groove 44 is open to the atmosphere. Therefore, even if the sealing material 40 closes the viscous agent filling space S during the fitting of the fitting shaft 31 as described above, When the fitting shaft 31 is further pushed into the concave portion 28, the internal pressure in the space S increases, and the increase in the internal pressure causes the sealing material 40 to widen as shown in FIGS. 5 (c) and 6 (b). Part 42 in the opposite side to the fitting direction of the fitting shaft 31 Curved so that relative movement (apparently, so nearly stopped without following the fitting sealing material 40 is fitted shaft 31 in the widened portion 42). With the relative movement of the sealing material 40 from the annular groove 41 at the widened portion 42, the end 43a of the air vent groove 43 on the annular groove 41 side is more in the viscous agent filling space S than the moving sealing material 40. It is opened and comes to communicate. As a result, even if air remains in the viscous agent filling space S, the air flows into the air vent groove 43 opened to the viscous agent filling space S, and the widened portion 42 The air is discharged to the atmosphere via an air discharge groove 44 which is continuous with the end 43b on the side. At this time, as described above, if the filling amount of the viscous agent L is set to be relatively large so that a part of the viscous agent L is discharged after the air is discharged, the discharge of the air is further ensured. .
[0069]
Moreover, the widened portion 42 of the annular groove 41 is provided at a position on one extension of the four cutout grooves 38, 38,... Residual air in the notch groove 38 corresponding to the portion 42 is pushed out by the movement of the viscous agent L toward the opening of the concave portion 28 through the groove opening 38a of the notch groove 38 as described above, and from the notch groove 38. After being discharged, it passes through the inner peripheral side of the curved sealing material 40 at the widened portion 42 on the extension of the cutout groove 38, and is discharged to the atmosphere via the air vent groove 43 or the air discharge groove 44. That is, the remaining air can be smoothly discharged by the coincidence between the notch groove 38 and the widened portion 42.
[0070]
Further, four support portion-side air vent grooves 46, 46,... Are provided on the inner peripheral surface near the opening of the concave portion 28, and the four support portion side air vent grooves 46, 46,. When 1 is in the retracted position, it is arranged at a position substantially on the extension of the notch grooves 38, 38,... On the outer peripheral surface of the insertion shaft 31 (or in the range of θ ≦ 15 ° with a shift angle θ), as described above. When the fitting portion 31a of the fitting shaft 31 is fitted and assembled into the recess 28 at the storage position of the grip body 1, the notch groove 38 substantially matches the air vent groove 46 on the support portion side and fits into the inner peripheral surface of the recess 28. In particular, the residual air in each notch groove 38 of the viscous agent filling space S formed by the gap between the outer peripheral surface of the part 31a and the viscous agent filling space S is smoothly removed from the support part side air vent groove 46 corresponding to the inner peripheral side of the seal material 40. Can be discharged.
[0071]
When the residual air escapes from the viscous agent filling space S through the air vent groove 43 and the air discharging groove 44 in this manner, the internal pressure of the viscous agent filling space S decreases, as shown in FIG. A part of the sealing material 40 that has moved to the widening portion 42 returns to the annular groove 41 from the widening portion 42. However, at this time, if the fitting shaft 31 is rotated in the concave portion 28 in consideration of a case where the sealing material 40 does not return due to a manufacturing error of the sealing material 40 and peripheral components of the sealing material 40, etc., Return is performed smoothly. When the fitting shaft 31 is completely fitted to the proper position in the concave portion 28, the sealing material 40 is pressed against the sealing surface 47 on the inner peripheral surface near the opening of the concave portion 28, and the residual air enters the viscous agent filling space S. Without viscous agent is enclosed.
[0072]
Therefore, the air can be reliably released from the viscous agent filling space S, and the air can be effectively removed. The fitting shaft 31 is completely fitted in the concave portion 28, and the viscous material filling space S is formed by the seal material 40. In the sealed state, the space S is filled with the viscous agent L without air mixture, and the viscous agent L exerts a good braking action, and the large damper effect against the rotation of the grip body 1 is reliably and stably. As a result, the stability and reliability of the operation of the assist grip G can be improved.
[0073]
The assist grip G to which the second mounting seat 12 is assembled in this manner inserts the mounting bolt B into the bolt insertion hole 15 of the mounting seat main body 13 in the second mounting seat 12 and inserts the second mounting seat 12 into the vehicle body panel P. By being fastened to the nut N on the back surface, it is assembled to the vehicle body panel P via the second mounting seat 12. Thereafter, the hinge-type lid 14 of the second mounting seat 12 is closed to cover and hide the mounting bolt B.
[0074]
On the other hand, also in the first mounting seat 11, the first leg portion 1a of the grip body 1 is rotatably supported by the support shaft 8, and the torsion coil spring 7 is mounted. Thereafter, the first mounting seat 11 is assembled to the vehicle body panel P substantially together with and in the same manner as the second mounting seat 12.
[0075]
Therefore, in the assist grip G of this embodiment, the grip main body 1 is normally positioned in the storage position by being rotationally urged by the urging force of the torsion coil spring 7, and in the storage position of the grip main body 1, Part of the mounting seats 11 and 12 are housed in the housings 2 of the legs 1a and 1b, respectively. When the occupant of the vehicle uses the assist grip G, the grip body 1 may be gripped by hand and turned to the use position against the urging force of the torsion coil spring 7. When the occupant releases his / her hand from the grip body 1 when the assist grip G is stopped, the grip body 1 rotates from the use position to the storage position with respect to the mounting seats 11 and 12 by the urging force of the torsion coil spring 7. While returning.
[0076]
When the grip body 1 is rotated from the use position to the storage position (the same occurs when the grip body 1 is rotated from the storage position to the use position), the housing portion 2 of the second leg 1b of the grip body 1 is rotated. The inner wall 2a of the second mounting seat 12 is fitted around a shaft portion 27 of the second mounting seat 12, and the fitting shaft 31 that is non-rotatably locked to the outer wall 2b of the housing portion 2 is provided on the support portion 26 of the second mounting seat 12. Each of them rotates in the concave portion 28, but a gap between the outer peripheral surface of the insertion portion 31 a of the insertion shaft 31 and the inner peripheral surface of the concave portion 28, a gap between the tip portion of the insertion portion 31 a and the bottom portion of the concave portion 28, Since the viscous agent L is filled in the viscous agent filling space S formed inside each notch groove 38, the viscosity of the viscous agent L causes the fitting shaft 31 and the rotation of the grip body 1 integrated therewith. Resistance (torque) is generated. As a result, the grip body 1 slowly rotates from the use position to the retracted position, so that the grip body 1 does not generate a tapping sound due to strong contact with the vehicle body panel P, and a high-grade feeling is obtained in the movement. Can be
[0077]
At this time, the viscous agent L is filled in the gap between the inner peripheral surface of the concave portion 28 of the support portion 26 in the second mounting seat 12 and the outer peripheral surface of the fitting portion 31a of the fitting shaft 31, and the tip of the fitting portion 31a and the concave portion. , Which are provided on the outer peripheral surface of the fitting portion 31a so as to extend in the axial direction of the fitting shaft 31, so that the concave portion 28 is filled. The filling amount of the viscous agent L increases as compared with the case where only the gap between the inner peripheral surface and the outer peripheral surface of the fitting portion 31a and the gap between the tip end of the fitting portion 31a and the bottom of the concave portion 28 are filled. I do. For this reason, when injecting the viscous agent L into the concave portion 28 by the injector at the time of assembling the fitting shaft 31 into the concave portion 28, even if an error (variation) occurs in the injection amount of the viscous agent L, the injection due to the error occurs. Fluctuations in the volume are smaller than when the injection volume (fill volume) is small. This effectively eliminates the insufficient filling of the viscous agent L and enhances the damper effect on the rotation of the grip body 1.
[0078]
Moreover, the gap between the inner peripheral surface of the concave portion 28 and the outer peripheral surface of the insertion portion 31a of the insertion shaft 31 and the inside of the notch grooves 38, 38,... The recesses 38 communicate with each other through the groove openings 38a of the notches 38, and when the insertion shaft 31 rotates relative to the recess 28, the gap between the inner peripheral surface of the recess 28 and the outer peripheral surface of the insertion portion 31a is filled. The viscous agent L filled in the notch grooves 38, 38,... On the outer peripheral surface of the fitting portion 31a fits inside the notch groove 38 while the viscous agent L that is Rotational movement together with the shaft 31 causes a shearing action between the two viscous agents L near the groove opening 38a, and the shearing between the viscous agents L increases the rotational resistance of the grip body 1. Thus, the damper effect can be further enhanced.
[0079]
By the synergistic action of the damper effect by increasing the amount of the viscous agent L and the damper effect by shearing the viscous agent L, a large damper effect on the rotation of the grip body 1 is reliably and stably obtained. Operational stability and reliability can be improved.
[0080]
In addition, since the restricting portion 49 is provided on the inner peripheral surface of the concave portion near the open port, the fitting shaft 31 tends to come out to the open port side of the concave portion due to rattling due to a manufacturing error or an assembly error. Also, the movement of the fitting shaft 31 is prevented by the restricting portion 49 via the seal member 40 fitted in the annular groove 41. As a result, the slip-out of the fitting shaft 31 from the concave portion 28 is regulated, so that the operation stability and reliability of the assist grip G can be improved.
[0081]
Further, the fitting shaft 31 of the grip body 1 is fitted into the concave portion 28 of the support portion 26 of the second mounting seat 12, and the viscous material L is filled in the viscous material filling space S between the fitting shaft 31 and the concave portion 28. In the assembled state, when a large load is applied to the fitting shaft 31 on the grip body 1 side, for example, when the user grips the grip body 1 and hangs down, the fitting shaft 31 moves the length of the grip body 1 against the concave portion 28. The sealing material 40 interposed between the opening of the recess 28 and the fitting shaft 31 is compressed and tends to be crushed to such an extent that it does not return to its original shape. However, at this time, the protrusion 50 provided on the outer peripheral surface of the fitting shaft 31 comes into contact with the inner peripheral surface of the concave portion 28, and after the contact, the relative movement of the fitting shaft 31 with respect to the concave portion 28 is regulated. By restricting the relative movement of the fitting shaft 31 with respect to the concave portion 28, it is possible to prevent the sealing material 40 from being compressed and deformed to such an extent that the sealing material 40 does not return to its original shape. And the stability and reliability of the operation of the assist grip G can be improved.
[0082]
In addition, the resin fitting shaft 31 that is non-rotatably locked at the base end to the locking opening 4 of the outer wall 2b of the housing portion 2 of the second leg 1b of the grip body 1 at the second end. The fitting shaft 31 is rotatably fitted into the concave portion 28 of the support portion 26 of the mounting seat 12 with the tip end of the fitting shaft 31 as a free end, and only the base end is fixed to the outer wall 2b of the accommodation portion 2 of the second leg 1b. Thus, the support structure of the fitting shaft 31 has a cantilever structure. For this reason, the grip body 1 made of resin is deformed due to shrinkage or the like at the time of molding, and the axes of the two legs 1a and 1b are aligned with the axes of the corresponding supporting portions 17 and 26 of the mounting seats 11 and 12, respectively. Even if there is a shift, the shift can be absorbed by the relative displacement of the free end on the distal end side of the insertion shaft 31 in the cantilever state. As a result, the grip body 1 can be smoothly rotated, and the grip body 1 can be reliably returned from the use position to the storage position by the urging force of the torsion coil spring 7. In addition, by absorbing the displacement of the shaft center, the sealing material 40 on the fitting shaft 31 side is effectively pressed against the sealing surface 47 on the inner peripheral surface of the recess 28 so that the fitting between the recess 28 of the second mounting seat 12 and the fitting shaft 31 is performed. The viscous agent L can be reliably sealed in the viscous agent filling space S therebetween, and leakage of the viscous agent L can be prevented. As a result, the reliability and operation stability of the retractable assist grip G can be improved.
[0083]
A pivot portion 35 projects from the outer surface of the distal end portion of the fitting shaft 31, and a pivot contact portion 36 for contacting the pivot portion 35 with the central portion of the inner surface of the bottom of the recess 28 facing the outer surface of the distal end portion of the fitting shaft 31. Is formed, and the distal end side of the insertion shaft 31 can swing by the contact between the pivot portion 35 and the pivot contact portion 36, so that the free end of the distal end of the insertion shaft 31 is attached to the inner surface of the bottom of the recess 28. The contact between the pivot portion 35 and the pivot contact portion 36 allows the pivot portion 35 to be swingably supported, and the free end of the fitting shaft 31 is not disturbed without impairing the function of the cantilever structure of the fitting shaft 31. By being stably supported on the bottom inner surface, smooth rotation of the fitting shaft 31 and prevention of leakage of the viscous agent L can be performed more reliably.
[0084]
(Other embodiments)
In the above embodiment, the widened portion 42 is provided at one position in the circumferential direction of the annular groove 41, but a plurality of widened portions may be provided at intervals in the circumferential direction of the annular groove 41. In this case, it is preferable that the plurality of widened portions be formed so as to be located on the same axis as the extension of the cutout grooves 38 on the outer peripheral surface of the fitting portion 31a as in the above-described embodiment.
[0085]
Further, in the above-described embodiment, the fitting shaft 31 is integrally and rotationally engaged with and fixed to the second leg 1 b which is one leg of the grip body 1, and the fitting shaft 31 is fitted into the concave portion 28 of the second mounting seat 12. The same damper means as above is provided between the first leg 1a and the first mounting seat 11 and between the second leg 1b and the second mounting seat 12, respectively. You can also.
[0086]
Further, in the above embodiment, the mounting seats 11 and 12 are mounted and fixed to the vehicle body panel P by screwing the mounting bolts B to the nuts N. In addition, for example, JP-A-2001-328480 and the like As shown in the figure, a locking piece which is inserted into a mounting hole opened in the vehicle body panel and is locked to a peripheral edge of the mounting hole is protruded from the mounting seat, and the locking piece is expanded by inserting a lock pin and mounted. The mounting seat can be mounted and fixed to the vehicle body panel by a claw fitting method that locks on the periphery of the hole.
[0087]
The above embodiment is an example of a retractable assist grip G for a vehicle, but the present invention can be applied to an assist grip other than a vehicle.
[0088]
【The invention's effect】
As described above, according to the first aspect of the present invention, a pair of mounting seats mounted and fixed to the fixed body, a resin grip body rotatably supported by the legs with the mounting seat, and the grip A biasing means for rotatingly biasing the main body from the use position to the storage position, wherein the leg faces the surface of the leg facing the fixed body when the grip body is in the storage position in the length direction of the grip body. In a rotary retractable assist grip having two side walls and a cutout formed in a storage portion for storing a part of the mounting seat at a storage position of the grip body, at least one of the mounting seat and the leg portion is provided. A concave portion is formed in the support portion of the mounting seat as a damper means for suppressing rotation of the grip body from the use position to the storage position, and a tip portion is located on the bottom side of the concave portion. And the base end is a locking opening in the side wall of the storage section The insertion shaft, which is inserted and non-rotatably locked, is rotatably inserted, and at least one notch groove extending in the axial direction is provided on the outer peripheral surface of the insertion shaft. The gap between the outer peripheral surface and the viscous agent filling space formed inside the notch groove is filled with the viscous agent, and the viscous agent is prevented from flowing out from the viscous agent filling space between the opening of the concave portion and the fitting shaft. By interposing the sealing material, it is possible to eliminate the shortage of the filling amount of the viscous agent, enhance the damper effect on the rotation of the grip body, and when the fitting shaft rotates relative to the concave portion, the inner peripheral surface of the concave portion. It is possible to further enhance the damper effect by exerting a shearing action between the viscous agent filled in the gap between the outer peripheral surface of the fitting shaft and the viscous agent filled in the cutout groove of the outer peripheral surface of the fitting shaft. Can be large for the grip body rotation Damper effect is obtained reliably and stably, it is possible to achieve the stability and improve the reliability of the operation of the assist grip.
[0089]
According to the second aspect of the present invention, an annular groove is provided for fitting the sealing material on the outer peripheral surface of the fitting shaft. In this annular groove, a part of the sealing material is annularly formed at at least one position on the extension of the cutout groove. A widened portion is formed to be relatively movable in a direction opposite to the fitting direction of the fitting shaft from the groove to the concave portion, and a continuous air vent groove is formed over the bottom of the widened portion and the bottom of the annular groove. The end of the widened portion side of the air vent groove can be opened to the atmosphere through the air discharge groove provided on the vertical wall of the widened portion, so that when the insertion shaft is inserted into the concave portion, the viscous agent is filled. Due to the increase of the internal pressure of the space, the seal material is partially moved at the widened part in the opposite direction to the insertion direction of the insertion shaft, and the air release groove communicates with the viscous agent filling space, and the air remaining in the viscous agent filling space is smoothed. Reliable to atmosphere through air vent groove or air release groove It can be discharged, and the viscous agent filling space is filled with viscous agent without air mixture, and a large damper effect on the rotation of the grip body can be obtained reliably and stably, improving the stability and reliability of the operation of the assist grip Can be planned.
[0090]
According to the invention of claim 3, the support portion side air vent groove is provided on the inner peripheral surface near the opening of the concave portion and substantially on the extension of the notch groove when the grip body is at the predetermined position. By positioning the grip body at a predetermined position and fitting the fitting shaft into the recess, the residual air in the notch groove, particularly in the viscous agent filling space, can also be discharged from the support part side air vent groove, and the fitting shaft and the recess And the notch groove is filled with a viscous agent without air mixture, so that a large damper effect on the rotation of the grip body is reliably and stably obtained, improving the stability and reliability of the operation of the assist grip. Can be planned.
[0091]
According to the fourth aspect of the present invention, a restriction is made to prevent the fitting shaft from moving toward the opening when the fitting shaft is fitted into the recess by contact with the sealing material on the inner peripheral surface of the recess near the opening. By providing the part, it is possible to restrict the fitting shaft from going out to the opening side of the concave part by the regulating part via the sealing material due to rattling due to manufacturing error or assembly error, and thus the operation of the assist grip Can be improved in stability and reliability.
[0092]
According to the fifth aspect of the present invention, the insertion shaft and the support portion are relatively moved to one of the outer peripheral surface of the insertion shaft and the inner peripheral surface of the concave portion near the opening of the concave portion in a direction substantially orthogonal to the length direction of the grip body. Sometimes, by providing a projection that abuts the other of the outer peripheral surface of the fitting shaft or the inner peripheral surface of the concave portion and regulates the compressive deformation of the seal material beyond a predetermined value, for example, the user grasps the grip body and pulls with a large force. For example, even if a large load acts on the fitting shaft on the grip body side and the fitting shaft relatively moves with respect to the recess in a direction substantially perpendicular to the length direction of the grip body, the gap between the opening of the recess and the fitting shaft can be reduced. Prevents the seal material interposed between them from compressing and deforming to such an extent that the seal material does not return to its original shape, thereby ensuring the sealability, and reliably and stably preventing the leakage of the viscous agent over a long period of time. The stability and reliability of the operation of the assist grip It is possible to improve the.
[0093]
According to the invention of claim 6, the fitting shaft made of resin is rotatably fitted into the concave portion of the support portion such that the tip is a free end, and is fitted to one of the outer surface of the leading end of the fitting shaft or the inner surface of the bottom of the recess. While forming the pivot part which protrudes concentrically with the fitting shaft or the concave part, the pivot part is brought into contact with the other of the outer surface of the distal end part of the fitting shaft or the inner surface of the bottom part of the concave part so that the distal end side of the fitting shaft can swing. By forming the pivot contact portion, the grip body made of resin is deformed due to shrinkage during molding and the like, and the axes of the two legs are deviated from the axes of the corresponding support portions of the mounting seat. However, the displacement can be absorbed by the relative displacement of the free end on the tip side of the cantilevered insertion shaft in a cantilever state, and the grip body can be smoothly rotated to return the grip body from the use position to the storage position, and to be attached. Insert the shaft into the recess of the seat Encapsulated good sealability viscosity agent sexual agent filling space prevents the viscosity agent from leaking, thus, it is possible to improve the reliability and operation stability of the retractable assist grip.
[Brief description of the drawings]
FIG. 1 is an enlarged sectional view taken along line II of FIG.
FIG. 2 is a view corresponding to FIG. 1, showing a state when the grip body is at a storage position.
FIG. 3 is an enlarged sectional view showing a sectional shape of a fitting portion of a fitting shaft.
FIG. 4 is an enlarged sectional view showing a state in which a sealing material is attached to a fitting shaft.
FIG. 5 is a cross-sectional view showing a movement in which residual air is discharged from inside the recess when the fitting shaft is fitted into the recess of the second mounting seat.
FIG. 6 is a front view showing a movement in which residual air is discharged from inside the concave portion by the movement of the sealing material when the fitting shaft is inserted into the concave portion of the second mounting seat.
FIG. 7 is a diagram corresponding to FIG. 2, showing a state where the fitting shaft is assembled.
FIG. 8 is a cross-sectional view showing a positional relationship in the circumferential direction between a cutout groove on the outer peripheral surface of the insertion shaft and a support portion side air vent groove at an opening end of the depression when the insertion shaft is inserted into the concave portion.
FIG. 9 is an enlarged sectional view taken along line IX-IX of FIG. 11;
FIG. 10 is an enlarged sectional view taken along line XX of FIG. 11;
FIG. 11 is a perspective view showing the entire configuration of the retractable assist grip according to the embodiment of the present invention in a state where the grip body is in a use position.
[Explanation of symbols]
G Retractable assist grip
P Body panel (fixed body)
1 grip body
1a First leg
1b 2nd leg
2 accommodation
2a Inner wall
2b Outer side wall
4 Lock mouth
7. Torsion coil spring (biasing means)
11 1st mounting seat
12 Second mounting seat
24 damper means
26 Support
28 recess
31 Insert shaft
31a insertion part
35 pivot part
36 Pivot abutment
38 Notch groove
38a Groove opening
40 Sealing material
41 annular groove
42 Widening section
43 Air vent groove
43a Annular groove side end
43b Wide end side end
44 Air release groove
46 Support section side air release groove
47 Seal surface
49 Regulatory Department
50 Projection
S Viscous agent filling space
L viscous agent
θ deviation angle

Claims (6)

固定体に固定される１対の取付座と、該取付座にそれぞれ脚部にて回動可能に軸支された長尺状のグリップ本体と、該グリップ本体を使用位置から格納位置に回動付勢する付勢手段とを備えた格納式アシストグリップにおいて、
上記脚部のうち上記グリップ本体が格納位置にあるときの上記固定体との対向面には、グリップ本体の長さ方向に対向する２つの側壁を有しかつ該グリップ本体の格納位置で上記取付座の一部を収容する収容部が切り欠いて形成され、
上記１対の取付座のうちの少なくとも一方には、グリップ本体の長さ方向に延びる有底筒状の凹部を有する支持部が形成されていて、該凹部の開放口は上記収容部の２つの側壁のうちの一方の側壁側に、また底部は他方の側壁側にそれぞれ位置しており、
上記収容部の２つの側壁のうち上記凹部の開放口に面する一方の側壁には係止口部が凹部と同心状に貫通形成され、
上記支持部の凹部には、先端部を凹部の底部側に位置させかつ基端部を上記収容部の側壁の係止口部に挿通して回動不能に係止せしめた嵌入軸が回動可能に嵌入され、
上記凹部内に位置する嵌入軸の外周面には、嵌入軸の軸線方向に延びる少なくとも１つの切欠溝が設けられ、
少なくとも上記凹部の内周面と嵌入軸の外周面との間の隙間、及び上記切欠溝の内部からなる粘性剤充填空間に粘性剤が充填され、
上記凹部の開放口と嵌入軸との間には、上記粘性剤充填空間からの粘性剤の流出を阻止するシール材が介在されていることを特徴とする格納式アシストグリップ。A pair of mounting seats fixed to the fixed body, a long grip body rotatably supported by the mounting seats with legs, and a rotation of the grip body from the use position to the storage position. In a retractable assist grip provided with a biasing means for biasing,
When the grip body is in the storage position, the surface of the leg portion facing the fixed body has two side walls facing the length direction of the grip body, and the mounting portion is provided at the storage position of the grip body. The storage part that stores a part of the seat is cut out and formed,
At least one of the pair of mounting seats is formed with a support portion having a bottomed cylindrical recess extending in the length direction of the grip body, and an opening of the recess is formed by two of the housing portions. The side wall is located on one of the side walls, and the bottom is located on the other side wall,
On one of the two side walls of the housing portion facing the opening of the concave portion, a locking opening portion is formed penetrating concentrically with the concave portion,
In the concave portion of the support portion, a fitting shaft whose front end portion is located at the bottom side of the concave portion and whose base end portion is inserted into the locking opening portion of the side wall of the housing portion and locked non-rotatably is rotated. Can be inserted
At least one notch groove extending in the axial direction of the fitting shaft is provided on an outer peripheral surface of the fitting shaft located in the concave portion,
At least a gap between the inner peripheral surface of the concave portion and the outer peripheral surface of the fitting shaft, and a viscous agent filling space formed by the inside of the notch groove is filled with a viscous agent,
A retractable assist grip, characterized in that a seal member for preventing a viscous agent from flowing out of the viscous agent filling space is interposed between an opening of the concave portion and the fitting shaft. 請求項１の格納式アシストグリップにおいて、
凹部の開放口近傍位置に対応する嵌入軸外周面に環状溝が凹設されていて、該環状溝にシール材が嵌め込まれ、
上記環状溝において切欠溝の延長線上の位置の少なくとも１箇所に、上記凹部に嵌入される嵌入軸の嵌入方向と反対側に上記シール材を部分的に環状溝から相対移動可能とする拡幅部が溝幅を他の部分よりも拡げて形成され、
上記拡幅部の底部と該拡幅部に対応する位置の環状溝の底部とに亘り互い連続するエア抜き溝が形成され、
上記拡幅部の縦壁に、一端が上記エア抜き溝の拡幅部側の端部に連続する一方、他端が大気に開放されたエア放出溝が設けられていることを特徴とする格納式アシストグリップ。The retractable assist grip according to claim 1,
An annular groove is formed in the outer peripheral surface of the fitting shaft corresponding to the position near the opening of the recess, and a sealing material is fitted into the annular groove,
In at least one position on the extension of the notch groove in the annular groove, a widening portion that allows the sealing material to partially move relatively from the annular groove is provided on a side opposite to a fitting direction of a fitting shaft fitted into the recess. Groove width is formed wider than other parts,
An air vent groove is formed continuously over the bottom of the widened portion and the bottom of the annular groove at a position corresponding to the widened portion,
The retractable assist is characterized in that a vertical wall of the widening portion is provided with an air discharge groove whose one end is continuous with an end of the air vent groove on the widening portion side, and the other end is open to the atmosphere. grip. 請求項１又は２の格納式アシストグリップにおいて、
凹部の開放口近傍位置の内周面でかつグリップ本体が所定位置にあるときの切欠溝の略延長線上の位置に、一端が、凹部に嵌入軸を嵌入した状態のシール材の位置よりも開放口側に開口し、他端が凹部の開放口端面に開口する少なくとも１つの支持部側エア抜き溝が設けられていることを特徴とする格納式アシストグリップ。The retractable assist grip according to claim 1 or 2,
One end is more open than the position of the sealing material in a state where the fitting shaft is fitted into the concave portion at a position on the inner peripheral surface near the opening of the concave portion and on a substantially extended line of the cutout groove when the grip body is at the predetermined position. A retractable assist grip, characterized in that at least one support portion side air vent groove is provided which is open on the mouth side and the other end is open on the open end face of the recess. 固定体に固定される１対の取付座と、該取付座にそれぞれ脚部にて回動可能に軸支された長尺状のグリップ本体と、該グリップ本体を使用位置から格納位置に回動付勢する付勢手段とを備えた格納式アシストグリップにおいて、
上記脚部のうち上記グリップ本体が格納位置にあるときの上記固定体との対向面には、グリップ本体の長さ方向に対向する２つの側壁を有しかつ該グリップ本体の格納位置で上記取付座の一部を収容する収容部が切り欠いて形成され、
上記１対の取付座のうちの少なくとも一方には、グリップ本体の長さ方向に延びる有底筒状の凹部を有する支持部が形成されていて、該凹部の開放口は上記収容部の２つの側壁のうちの一方の側壁側に、また底部は他方の側壁側にそれぞれ位置しており、
上記収容部の２つの側壁のうち上記凹部の開放口に面する一方の側壁には係止口部が凹部と同心状に貫通形成され、
上記支持部の凹部には、先端部を凹部の底部側に位置させかつ基端部を上記収容部の側壁の係止口部に挿通して回動不能に係止せしめた嵌入軸が回動可能に嵌入され、
少なくとも上記凹部の内周面と嵌入軸の外周面との間の隙間からなる粘性剤充填空間に粘性剤が充填され、
上記凹部の開放口近傍位置の嵌入軸外周面に環状溝が凹設されていて、該環状溝に上記粘性剤充填空間からの粘性剤の流出を阻止するシール材が嵌め込まれ、
上記凹部の開放口近傍位置の内周面に、上記シール材と当接することで、嵌入軸が凹部に嵌入された状態で上記開放口側へ移動するのを阻止する規制部が設けられていることを特徴とする格納式アシストグリップ。A pair of mounting seats fixed to the fixed body, a long grip body rotatably supported by the mounting seats with legs, and a rotation of the grip body from the use position to the storage position. In a retractable assist grip provided with a biasing means for biasing,
When the grip body is in the storage position, the surface of the leg portion facing the fixed body has two side walls facing the length direction of the grip body, and the mounting portion is provided at the storage position of the grip body. The storage part that stores a part of the seat is cut out and formed,
At least one of the pair of mounting seats is formed with a support portion having a bottomed cylindrical recess extending in the length direction of the grip body, and an opening of the recess is formed by two of the housing portions. The side wall is located on one of the side walls, and the bottom is located on the other side wall,
On one of the two side walls of the housing portion facing the opening of the concave portion, a locking opening portion is formed penetrating concentrically with the concave portion,
In the concave portion of the support portion, a fitting shaft whose front end portion is located at the bottom side of the concave portion and whose base end portion is inserted into the locking opening portion of the side wall of the housing portion and locked non-rotatably is rotated. Can be inserted
A viscous agent is filled at least in a viscous agent-filled space formed by a gap between an inner peripheral surface of the recess and an outer peripheral surface of the fitting shaft,
An annular groove is recessed in the outer peripheral surface of the fitting shaft near the opening of the concave portion, and a seal member for preventing outflow of the viscous agent from the viscous agent filling space is fitted into the annular groove,
A regulating portion is provided on an inner peripheral surface of the concave portion near the open port, which is in contact with the seal material to prevent the fitting shaft from moving toward the open port while being fitted into the concave portion. A retractable assist grip characterized by the following: 固定体に固定される１対の取付座と、該取付座にそれぞれ脚部にて回動可能に軸支された長尺状のグリップ本体と、該グリップ本体を使用位置から格納位置に回動付勢する付勢手段とを備えた格納式アシストグリップにおいて、
上記脚部のうち上記グリップ本体が格納位置にあるときの上記固定体との対向面には、グリップ本体の長さ方向に対向する２つの側壁を有しかつ該グリップ本体の格納位置で上記取付座の一部を収容する収容部が切り欠いて形成され、
上記１対の取付座のうちの少なくとも一方には、グリップ本体の長さ方向に延びる有底筒状の凹部を有する支持部が形成されていて、該凹部の開放口は上記収容部の２つの側壁のうちの一方の側壁側に、また底部は他方の側壁側にそれぞれ位置しており、
上記収容部の２つの側壁のうち上記凹部の開放口に面する一方の側壁には係止口部が凹部と同心状に貫通形成され、
上記支持部の凹部には、先端部を凹部の底部側に位置させかつ基端部を上記収容部の側壁の係止口部に挿通して回動不能に係止せしめた嵌入軸が回動可能に嵌入され、
少なくとも上記凹部の内周面と嵌入軸の外周面との間の隙間からなる粘性剤充填空間に粘性剤が充填され、
上記凹部の開放口と嵌入軸との間に上記粘性剤充填空間からの粘性剤の流出を阻止するシール材が介在され、
上記凹部の開放口近傍位置の嵌入軸外周面又は凹部内周面の一方に、嵌入軸と支持部とがグリップ本体の長さ方向と略直交する方向に相対移動したときに上記嵌入軸外周面又は凹部内周面の他方と当接して、シール材の所定以上の圧縮変形を規制する突起部が設けられていることを特徴とする格納式アシストグリップ。A pair of mounting seats fixed to the fixed body, a long grip body rotatably supported by the mounting seats with legs, and a rotation of the grip body from the use position to the storage position. In a retractable assist grip provided with a biasing means for biasing,
When the grip body is in the storage position, the surface of the leg portion facing the fixed body has two side walls facing the length direction of the grip body, and the mounting portion is provided at the storage position of the grip body. The storage part that stores a part of the seat is cut out and formed,
At least one of the pair of mounting seats is formed with a support portion having a bottomed cylindrical recess extending in the length direction of the grip body, and an opening of the recess is formed by two of the housing portions. The side wall is located on one of the side walls, and the bottom is located on the other side wall,
On one of the two side walls of the housing portion facing the opening of the concave portion, a locking opening portion is formed penetrating concentrically with the concave portion,
In the concave portion of the support portion, a fitting shaft whose front end portion is located at the bottom side of the concave portion and whose base end portion is inserted into the locking opening portion of the side wall of the housing portion and locked non-rotatably is rotated. Can be inserted
A viscous agent is filled at least in a viscous agent-filled space formed by a gap between an inner peripheral surface of the recess and an outer peripheral surface of the fitting shaft,
A seal member that prevents the viscous agent from flowing out of the viscous agent-filled space is interposed between the opening of the concave portion and the fitting shaft,
The outer peripheral surface of the insertion shaft when the insertion shaft and the support portion relatively move to one of the outer peripheral surface of the insertion shaft or the inner peripheral surface of the concave portion near the opening of the concave portion in a direction substantially orthogonal to the length direction of the grip body. Alternatively, a retractable assist grip is provided with a projection which comes into contact with the other of the inner peripheral surface of the concave portion and restricts a compressive deformation of the seal material beyond a predetermined value. 請求項１〜５のいずれか１つの格納式アシストグリップにおいて、
嵌入軸は樹脂製で支持部の凹部に先端部を自由端として回動可能に嵌入されており、
上記嵌入軸の先端部外面又は凹部の底部内面の一方には、嵌入軸又は凹部と同心状に突出するピボット部が形成されている一方、
嵌入軸の先端部外面又は凹部の底部内面の他方には、嵌入軸の先端側が揺動可能となるように上記ピボット部を当接させるピボット当接部が形成されていることを特徴とする格納式アシストグリップ。The retractable assist grip according to any one of claims 1 to 5,
The fitting shaft is made of resin, and is rotatably fitted into the concave portion of the support portion with the tip portion as a free end,
On one of the tip outer surface of the fitting shaft or the bottom inner surface of the recess, a pivot portion protruding concentrically with the fitting shaft or the recess is formed,
The other end of the outer surface of the tip of the insertion shaft or the inner surface of the bottom of the recess is provided with a pivot contact portion for contacting the pivot portion so that the tip of the insertion shaft can swing. Type assist grip.
JP2002226313A 2002-08-02 2002-08-02 Storage type assist grip Pending JP2004066893A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002226313A JP2004066893A (en) 2002-08-02 2002-08-02 Storage type assist grip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002226313A JP2004066893A (en) 2002-08-02 2002-08-02 Storage type assist grip

Publications (1)

Publication Number Publication Date
JP2004066893A true JP2004066893A (en) 2004-03-04

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ID=32013695

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002226313A Pending JP2004066893A (en) 2002-08-02 2002-08-02 Storage type assist grip

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005282784A (en) * 2004-03-30 2005-10-13 Aisin Seiki Co Ltd Actuator for clutch
CN105682988A (en) * 2013-10-28 2016-06-15 株式会社利富高 Assist grip

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005282784A (en) * 2004-03-30 2005-10-13 Aisin Seiki Co Ltd Actuator for clutch
JP4517702B2 (en) * 2004-03-30 2010-08-04 アイシン精機株式会社 Clutch actuator
CN105682988A (en) * 2013-10-28 2016-06-15 株式会社利富高 Assist grip

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