JP3960598B2

JP3960598B2 - Seat reclining device

Info

Publication number: JP3960598B2
Application number: JP2002377144A
Authority: JP
Inventors: 伸雄山田
Original assignee: 日本テクニカ株式会社
Priority date: 2002-12-26
Filing date: 2002-12-26
Publication date: 2007-08-15
Anticipated expiration: 2022-12-26
Also published as: JP2004202079A

Description

【０００１】
【発明の属する技術分野】
この発明は、車輌のシートリクライニング装置（シートのタンブル機構を含む）に関する。
【０００２】
【従来の技術】
従来のシートリクライニング装置は、ロック機構とケーシングケースとに貫設した操作軸に板バネを捲装し、この板バネは、ケーシングケースと操作軸に係止する構造である。この操作軸をハンドルの操作（回転）で回転し、ロック機構のロック及びアンロックをするとともに、板バネの緊張及び弛緩（緊張開放）を図り、シートを、所望するスピード及び／又は荷重によりリクランニングする構成である。この従来の構成では、このリクライニング調整（シートの折畳み及び／又は復帰）は、専ら板バネの反撥力に依存する構造であるので、折畳み等の際の衝撃は、時として思わぬ障害を引起す虞がある。
【０００３】
この障害の一例は、衝撃による問題であり、例えば、幼児、老人、病人等の弱者に対するシート自体と、このシートの硬質部材等による怪我、物損事故、又はその恐怖感等の被害、この被害のエスカレートによる怪我、又はシートより投げ出される蓋然性等の問題があること、等が指摘されている。次にシートの多様な使用、即ち、早急なシートの折畳み及び／又は復帰（適宜傾斜角度での立設）が望まれる場合、またシートの折畳み及び／又は復帰を、スピーディ及び／又はスピード変化等の動作を確実に行えないことにある。
【０００４】
尚、この種のシートリクライニング装置は、昨今の車種の多様化に対応できる要望がある。即ち、乗用車から、ワゴン、ワンボックスカー又はミニバンと変革する過程で、シートもフルフラット化により、シートバックを先に戻す場合、その途中よりシートバックのスピードが速くなることが指摘されており、また前述した障害の改善と、シート形態の多様化も同時に達成することが急務となってきた。
【０００５】
この状況に対応する機構（技術）として、次のような構造が実用に供されている。その概要を説明すると、スプリングの強弱を補完するトーションバネ等の二次的な手段、又は衝撃吸収部材等を設けた装置がある。この装置は、緩衝効果は期待できる。しかし、この程度の緩衝効果では、略全ての条件を満足することは不可能であること、そして構造が複雑となること、等の課題が考えられる。
【０００６】
従来の技術と、その改良に関する機構に関する解決の一環として、先行文献を挙げる。例えば、粘性グリースを介在して回転側部材の動きを規制する特開平１−１０７７０８号の発明「文献（１）」、またシートバックのリターンスプリングによる戻り規制を利用してシートバックの戻りスピードを緩和する特開平９−２５２８６８号の発明「文献（２）」、又は実開平５−４６３４７号の考案「文献（３）」等が挙げられる。
【０００７】
【発明が解決しようとする課題】
以下、文献（１）〜（３）の発明等では、リターン用のスプリングという規制手段を付加した構成である。従って、この構成を採用した場合は、スプリングの調達と、このスプリングを付設する機構を、ケーシング等に設ける必要がある。この付設する機構を設けた場合は、構造が複雑となること、この付設する機構を装置できる車輌の機種が限定されること（汎用性に欠けること）、等の改良点がある。しかし、この部品の調達と、付設する機構の装置には、コストの上昇を招来する。尚、この付設する機構のみでは、シートリクライニング装置として要求される機能の充足と、またシートの戻りスピード制御とに関して、解決すべき点があること、等の課題が考えられる。
【０００８】
また文献（２）等では、リターンスプリング等の補助規制手段を採用する構成では、この補助規制手段とスプリングとの反撥力調整が微妙であって、この補助規制手段及び／又はスプリング（両者とする）の動きの確実性が保証されないこと、又は両者の組付けには、高度の技術、豊富な経験等を要すること、等の問題がある。また構造上で、シートのスムーズな動きに、課題を残すこと、又はコストの上昇を招来すること、等の課題が考えられる。
【０００９】
尚、本出願人は、従来技術及び文献（１）〜（３）の改良として、既に多数の基本的な出願を提出している。本発明は、この改良発明の個別な箇所の発明に関する。
【００１０】
【課題を解決するための手段】
請求項１の発明は、ケーシングとスプリングとの改良により、当該スプリングを規制してシートの折畳み及び／又は起立、移動等を、緩やかに行うことで、各種の衝撃をなくすこと、又はこの衝撃に基づく、前述の弊害解消を図ること、この改良で構成された簡単な構造を利用して、組付けの容易化、迅速化等を図り、またスプリングの加工の容易化、迅速化等を図ること、等を意図する。またスプリングの妄動（安定しない緊張及び／又は弛緩）を回避して、シートの確実な動きと、前記のようなスムーズな動きを確保することを意図する。そして、スプリングとケーシングとの連繋強化を図り、スプリングにかかる荷重と、ケーシングの取付け部にかかる荷重に有効に対応すること、又は取付け部の破壊防止を図ること、等を意図する。殊に、本発明が意図するのは、部品点数の減少と、この減少に基づくコストの削減化、故障の発生回避、製造の容易化等の如く、製造及び販売面での優位性を確保することにある。そして、各種の車輌及び／又はシートの状況に、適確に対応することを意図する。
【００１１】
請求項１は、シートの可動を司る操作軸と、この操作軸の可動を司るリクライニング機構と、このリクライニング機構のロック、アンロックを司るロック機構と、このロック機構に固止したケーシングと、このケーシングに設けたスプリング取付け部に一端を係止するスプリングと、このスプリングの係止端が挿入される前記ケーシングに設けた溝と、このスプリングを作動する前記ケーシングに設けた操作手段と、前記スプリングの外周面に設けた規制係止部と、この規制係止部に接触し、当該スプリングの可動を規制する規制部とで構成したシートリクライニング装置であって、前記規制部は、前記ケーシングに設けたガイド片を備えた数個の筒部と、この数個の筒部に設けた球体、ブッシュ等で構成し、この規制部とスプリングとの摩擦抵抗を利用し、前記スプリングの動きを多段階に規制する構成としたことを特徴とするシートリクライニング装置である。
【００１２】
請求項２〜請求項４の発明は、請求項１の目的を達成し、しかもこの目的を達成するに最適で、各種のシート、又はシートの戻り荷重に対応できる規制係止部の提供を意図する。
【００１３】
請求項２は、請求項１に記載の規制係止部を、前記スプリングの外周面に形成した平坦構成とし、また前記規制部を、前記ケーシングの内方に突出したリブ形の複数の筒部の上面に設けた平坦構成としたシートリクライニング装置である。
【００１４】
請求項３は、請求項１に記載の規制係止部を、前記スプリングの外周面の長手方向の略中央部に設けた略凹凸、波形、ローレット、突条、変形形状等の凹凸構成とし、また前記規制部を、前記ケーシングの内方に突出したリブ形の複数の筒部の上面に設けた平坦構成としたシートリクライニング装置である。
【００１５】
請求項４は、請求項１に記載の規制係止部を、前記スプリングの外周面に形成した平坦構成とし、また前記規制部を、前記ケーシングの内方に突出したリブ形の複数の筒部の上面に設けた略凹凸、波形、ローレット、突条、変形形状等の凹凸構成としたシートリクライニング装置である。
【００１６】
請求項５の発明は、請求項１の目的を達成し、しかもこの目的を達成するに最適で、各種のシート、又はシートの戻り荷重にスムーズに対応できる規制係止部の提供を意図する。
【００１７】
請求項５は、請求項１に記載の規制係止部を、前記スプリングの外周面に形成した略凹凸、波形、ローレット、突条、変形形状等の凹凸構成とし、また前記規制部を、前記ケーシングの内方に突出したリブ形の複数の筒部の上面に設けた略凹凸、波形、ローレット、突条、変形形状等の凹凸構成としたシートリクライニング装置である。
【００１８】
【００１９】
【００２０】
【００２１】
【００２２】
【００２３】
【００２４】
【００２５】
【００２６】
【００２７】
【００２８】
【００２９】
【００３０】
【００３１】
【００３２】
【００３３】
【００３４】
【００３５】
【００３６】
【００３７】
【００３８】
【００３９】
【００４０】
【００４１】
【００４２】
【００４３】
【００４４】
【００４５】
【００４６】
【００４７】
【００４８】
【発明の実施の形態】
以下、本発明の一実施例を、図面を参照して説明する。
【００４９】
図１はシートのリクライニング装置に本発明を採用した実施例の縮尺模式図を、図２はシートのタンブル機構に本発明を採用した実施例の縮尺模式図で、（イ）は起立状態を、（ロ）、（ハ）は各折畳み状態を示す。また図３は図１と図２の例を併合した実施例の縮尺模式図で、（イ）は起立状態を、（ロ）、（ハ）は各折畳み状態を示す。そして、図４〜図１１は請求項１〜４に記載の実施例を示しており、図４はケーシング本体の裏面図、図５はケーシング本体の正面図、図６（イ）〜（ニ’）は、筒部とスプリングとの各組合せを示しており、（イ）は両者（筒部とスプリングとの総称）が平坦構成でなる例の側面図、（イ’）はその平面図、（ロ）は筒部が平坦構成で、スプリングが凹凸構成でなる一部欠截の側面図、（ロ’）はその平面図、（ハ）は筒部が凹凸構成で、スプリングが平坦構成でなる側面図、（ハ’）はその平面図、（ニ）は両者が凹凸構成でなる一部欠截の側面図、（ニ’）はその平面図、図７（イ）〜（ロ’）は、筒部の球体とスプリングとの各組合せを示しており、（イ）は両者（球体とスプリングとの総称）が平坦構成でなる例の側面図、（イ’）はその平面図、（ロ）は球体が平坦構成で、スプリングが凹凸構成でなる一部欠截の側面図、（ロ’）はその平面図、図８（イ）〜（ニ’）は、筒部の球体を受ける球体受片とスプリングとの各組合せを示しており、（イ）は両者（球体受片に設けた球体とスプリングとの総称）が平坦構成でなる例の側面図、（イ’）はその平面図、（ロ）は球体受片に設けた球体が平坦構成で、スプリングが凹凸構成でなる一部欠截の側面図、（ロ’）はその平面図、（ハ）は他の球体受片に設けた球体とスプリングが平坦構成でなる側面図、（ハ’）はその平面図、（ニ）は他の球体受片に設けた球体が平坦構成で、スプリングが凹凸構成でなる一部欠截の側面図、（ニ’）はその平面図、図９（イ）〜（ロ’）は、筒部の球体を受ける球体受片とスプリングとの各組合せを示しており、（イ）は他の球体受片に設けた球体とスプリングが平坦構成でなる側面図、（イ’）はその平面図、（ロ）は他の球体受片に設けた球体が平坦構成で、スプリングが凹凸構成でなる一部欠截の側面図、（ロ’）はその平面図、図１０（イ）〜（ニ’）は、筒部に設けたブッシュとスプリングとの各組合せを示しており、（イ）は両者（ブッシュとスプリングとの総称）が平坦構成でなる例の側面図、（イ’）はその平面図、（ロ）はブッシュが平坦構成で、スプリングが凹凸構成でなる一部欠截の側面図、（ロ’）はその平面図、（ハ）はブッシュが凹凸構成で、スプリングが平坦構成でなる側面図、（ハ’）はその平面図、（ニ）は両者が凹凸構成でなる一部欠截の側面図、（ニ’）はその平面図、図１１（イ）〜（ニ’）は、筒部に設けた他のブッシュとスプリングとの各組合せを示しており、（イ）は両者（他のブッシュとスプリングとの総称）が平坦構成でなる例の側面図、（イ’）はその平面図、（ロ）はブッシュが平坦構成で、スプリングが凹凸構成でなる一部欠截の側面図、（ロ’）はその平面図、（ハ）はブッシュが凹凸構成で、スプリングが平坦構成でなる側面図、（ハ’）はその平面図、（ニ）は両者が凹凸構成でなる一部欠截の側面図、（ニ’）はその平面図、図１２はケーシング本体とケーシング蓋体等の周辺部を説明する断面、また図１３は規制係止部と規制部との各種の組合せを説明し、各種の車種、シートの形態、シートの多様な使用（例えば、シートの折畳み及び／又は復帰のスピード・荷重・安全性等）に対応可能な状況を説明する図表である。
【００５０】
図１〜図３に示したシートＡは車輌（図示せず）用であり、このシートＡは、シートＡのシートクッションＡ１と、シートＡのシートバックＡ２とで構成する。そして、このシートＡのシートクッションＡ１及び／又はシートバックＡ２は、折畳可能となっている。またＢはロック機構で、シートＡの起立、折畳み等を司るロック、アンロック機構を備えている。
【００５１】
図４、図５に示した請求項１に記載の実施例を説明する。
【００５２】
１はロック機構Ｂを構成する環状部１００ａを備えたケーシング本体で、このケーシング本体１は、固定部材２の脚２００を、ケーシング本体の鍔片１ｂに係止してリクライニングケースＢ１に固止されている。このケーシング本体１を詳細に説明する。このケーシング本体１には、スプリング３を収容するスプリング取付け部４００を備えた部屋４を有しており、この部屋４の外周辺にはスプリング３の係止端３ａ（移動側端）が挿入される円弧状の溝５が形成されている。またケーシング１の周辺より立設した環状部１００ａの内面Ｉ００ｂには、前記スプリング３をガイドする数個のガイド片６と、このスプリング３の動きを規制する数個のリブ形筒部７を有する。そして、この筒部７の上面７００には規制部８を有しており、この規制部８は、前記スプリング３の外周面３００に設けた規制係止部９と係止関係となる。この係止関係の摩擦抵抗、噛合（滑り抵抗）関係、又は係わりの程度、等により、前記各種の車種、シートの形態、シートの多様な使用に対応可能とする。尚、このケーシング本体１は樹脂製とするが、金属、複合材料等を使用する場合もあり得る。
【００５３】
次に、規制部８と、規制係止部９との係止関係の一例を具体的に説明する。
【００５４】
図６（イ）〜（ニ’）に示した例では、筒部７の規制部８と、スプリング３の規制係止部９との各組合せを示しており、（イ）は筒部７の上面７００を平坦８００（規制部８）に構成し、スプリング３の外周面３００を平坦９００（規制係止部９）に構成し、この平坦８００と９００との摩擦抵抗を利用して、シートＡ（シートクッションＡ１及び／又はシートバックＡ２）の動きを規制する。また（ロ）は筒部７の上面７００を平坦８００に構成し、スプリング３の外周面３００を凹凸９００ａ（規制係止部９）に構成し、この平坦８００と凹凸９００ａとの摩擦抵抗を利用して、シートＡの動きを規制する。さらに（ハ）は筒部７の上面７００を凹凸８００ａ（規制部８）に構成し、スプリング３の外周面３００を平坦９００に構成し、この凹凸８００ａと平坦９００との摩擦抵抗を利用して、シートＡの動きを規制する。また（ニ）は筒部７の上面７００を凹凸８００ａに構成し、スプリング３の外周面３００を凹凸９００ａ（規制係止部９）に構成し、この凹凸８００ａと凹凸９００ａとの摩擦抵抗を利用して、シートＡの動きを規制する。
【００５５】
尚、この筒部７の凹凸８００ａと、スプリング３の凹凸９００ａの形状、材質等を変更して、摩擦抵抗（滑り程度）を変更して、シートＡの動きを規制するができる。またこの筒部７の平坦８００・凹凸８００ａ、及び／又はスプリング３の平坦９００・凹凸９００ａは、それぞれ個別に筒部７の本体、スプリング３の本体に取付け・取外しができる構成も可能である。この例外的な手段（以下同じ）により、摩擦抵抗の変更、又は希望に対応できること、また必要時に、適宜変更できて重宝すること、等の有益がある。従って、シートＡの多様な要望に応え得ること、又は広い使用に途を開き実用に供し得る（以下同じ）。
【００５６】
図７（イ）〜（ロ’）に示した例では、筒部７に設けた球体８−１と、この球体８−１の離脱防止用の係止片８−２（筒部７より延設する構成が理想である）と、弾性体８−３とでなる規制部８とスプリング３との各組合せを示しており、（イ）は筒部７に設けた球体８−１（規制部８）で構成し、スプリング３の外周面３００を平坦９００（規制係止部９）に構成し、この球体８−１と平坦９００との摩擦抵抗を利用して、シートＡの動きを規制する。また（ロ）は筒部７に設けた球体８−１で構成し、スプリング３の外周面３００を凹凸９００ａ（規制係止部９）に構成し、この球体８−１の平坦８００と凹凸９００ａとの摩擦抵抗を利用して、シートＡの動きを規制する。このスプリング３の例外的な手段による特徴は、前述の例に準ずる。尚、図示しないが、球体８−１に（微細）凹凸、規制手段を設けて、前述の例と略同様な構成を採用し、しかも略同様な効果等を図ることは可能である。
【００５７】
図８（イ）〜（ロ’）に示した例では、筒部７に設けた球体８−１と、この球体８−１の離脱防止用の係止片８−２（筒部７より延設する構成が理想である）と、球体８−１の復帰を司り、また球体８−１に反撥力を与える弾性体８−３と、前記球体８−１を受ける球体受片８−１ａとでなる規制部８とスプリング３との各組合せを示しており、（イ）は筒部７に設けた球体８−１（規制部８）で構成し、スプリング３の外周面３００を平坦９００（規制係止部９）に構成し、この球体８−１と平坦９００との摩擦抵抗を利用して、シートＡの動きを規制する。また（ロ）は筒部７に設けた球体８−１で構成し、スプリング３の外周面３００を凹凸９００ａ（規制係止部９）に構成し、この球体８−１の平坦８００と凹凸９００ａとの摩擦抵抗を利用して、シートＡの動きを規制する。このスプリング３の例外的な手段による特徴は、前述の例に準ずる。尚、図示しないが、球体８−１に（微細）凹凸、規制手段を設けて、前述の例と略同様な構成を採用し、しかも略同様な効果等を図ることは可能である。尚、球体８−１は、球体受片８−１ａの球面で受けるが、この球面に前述と同様な規制手段（図示せず）を設けて、この球体８−１と球面との規制を図ることも可能であり、この規制による単独の規制、又は球体８−１とスプリング３とを加えた併用の規制とかが考えられる。そして、この例では、球体８−１を弾性体８−３の反撥力を利用すれば、球体８−１とスプリング３との規制を多様に変更できる。
【００５８】
尚、図８（ハ）〜（ニ’）に示した例では、前記図８（イ）〜（ロ’）の変形例であり、球体８−１を受ける球体受片８−１ａの脚部８−１ｂを、内面１００ｂに設けた凹１００ｂ−１に挿入して、当該球体８−１及び／又は球体受片８−１ａの強度の向上、安定性の確保、又は球体８−１の動きの確実性等を図ることを意図する。
【００５９】
図９（イ）〜（ロ’）に示した例は、前記図８（ハ）〜（ニ’）の変形例であり、筒部７に設けた球体８−１と、この球体８−１の離脱防止用の係止片８−２と、球体８−１の復帰を司り、また球体８−１に反撥力を与える弾性体８−３と、前記球体８−１を受ける球体受片８−１ａとでなる規制部８とスプリング３との各組合せを示している。この例では、球体８−１を受ける球体受片８−１ａの脚部８−１ｂを、内面１００ｂに設けた凹１００ｂ−１に挿入し、しかもこの脚部８−１ｂに差渡した枢軸８−４を介して可動可能（揺動可能）として、球体８−１と球面との係り合いを制御する。例えば、可動を介して球体８−１と球面との接離（隙間の発生と、摩擦抵抗の軽減化等）を介してシートＡの可動（折畳及び起立等）制御と、スプリング３及び／又はケーシング本体１等に対する荷重の軽減化、動作の確実性等を図る。また前述と同様に球体８−１及び／又は球体受片８−１ａの強度の向上、安定性の確保、又は球体８−１の動きの確実性等を図ることを意図する。（イ）は筒部７に設けた可動式の脚部８−１ｂと球体８−１とで（規制部８）を構成し、スプリング３の外周面３００を平坦９００（規制係止部９）に構成し、この球体８−１と平坦９００との摩擦抵抗を利用して、シートＡの動きを規制する。また（ロ）は筒部７に設けた可動式の脚部８−１ｂと球体８−１で構成し、スプリング３の外周面３００を凹凸９００ａ（規制係止部９）に構成し、この球体８−１と凹凸９００ａとの摩擦抵抗を利用して、シートＡの動きを規制する。この例においても、前述したスプリング３の例外的な手段、球体８−１に（微細）凹凸、規制手段を設けること、又球体８−１は、球体受片８−１ａの球面で受けるが、この球面に前述と同様な規制手段（図示せず）を設けること、等の構成は、採用できる。
【００６０】
図１０（イ）〜（ニ’）に示した例では、筒部７に設けたブッシュ８−１ｃと、このブッシュ８−１ｃの離脱防止用の係止片８−２とでなる規制部８とスプリング３との各組合せを示している。（イ）はブッシュ８−１ｃの上面７００を平坦８００（規制部８）に構成し、スプリング３の外周面３００を平坦９００（規制係止部９）に構成し、この平坦８００と９００との摩擦抵抗を利用して、シートＡ（シートクッションＡ１及び／又はシートバックＡ２）の動きを規制する。また（ロ）はブッシュ８−１ｃの上面７００を平坦８００に構成し、スプリング３の外周面３００を凹凸９００ａ（規制係止部９）に構成し、この平坦８００と凹凸９００ａとの摩擦抵抗を利用して、シートＡの動きを規制する。さらに（ハ）はブッシュ８−１ｃの上面７００を凹凸８００ａ（規制部８）に構成し、スプリング３の外周面３００を平坦９００に構成し、この凹凸８００ａと平坦９００との摩擦抵抗を利用して、シートＡの動きを規制する。また（ニ）はブッシュ８−１ｃの上面７００を凹凸８００ａに構成し、スプリング３の外周面３００を凹凸９００ａ（規制係止部９）に構成し、この凹凸８００ａと凹凸９００ａとの摩擦抵抗を利用して、シートＡの動きを規制する。この例におけるブッシュ８−１ｃとスプリング３との係り合いは、前述の図６の（イ）〜（ニ’）の例に準ずる。
【００６１】
図１１（イ）〜（ニ’）に示した例では、筒部７に設けたブッシュ８−１ｃと、このブッシュ８−１ｃの離脱防止用の係止片８−２とでなる規制部８とスプリング３との各組合せを示している。この例では、ブッシュ８−１ｃを筒部７内に可動可能に挿入する。このブッシュ８−１ｃの可動は、脚部８−１ｂに差渡した枢軸８−４を介して行う構成である。この可動で、当該ブッシュ８−１ｃとスプリング３との係り合いを制御する。例えば、可動を介してブッシュ８−１ｃとスプリング３との接離（隙間の発生と、摩擦抵抗の軽減化等）を介してシートＡの可動（折畳及び起立等）制御と、スプリング３及び／又はケーシング本体１等に対する荷重の軽減化、動作の確実性等を図る。また前述と同様にブッシュ８−１ｃの強度の向上、安定性の確保、又はブッシュ８−１ｃの動きの確実性等を図ることを意図する。この例の（イ）〜（ニ’）は、前述の図１０（イ）〜（ニ’）の例に準ずるが、前記ブッシュ８−１ｃの可動の特徴が加味される。尚、この例におけるブッシュ８−１ｃとスプリング３との係り合いは、前述の図６の（イ）〜（ニ’）の例に準ずる。
【００６２】
尚、スプリング３の凹凸９００ａは、略中心部に設けて、その両端部を平坦面部９００ｂとし、スプリング３の強度と、耐久性の向上等を意図する。そして、この凹凸９００ａの形態、数（ピッチ）等は、当該スプリング３の収縮及び／又は拡張時のスピードを制御する。具体的には、この収縮及び／又は拡張のスピードを抑制することで、シートＡの人、物等に対する衝撃を緩和する。また起立及び／又は折畳みのスピードを、適宜制御して、人に優しく、また望みのスピードを確保できる等の実益が考えられる。
【００６３】
またケーシング本体１には、操作手段を構成する操作ハンドル１０と操作杆１００とが設けられており、操作ハンドル１０の操作で、操作杆１００の移動と、操作アーム１０１の可動を介してケーシング本体１が回転し、ロック機構Ｂをアンロックする。このアンロックを介してスプリング３が反撥し、当該スプリング３の係止端３ａが、ケーシング本体１の溝５を、左側から右側に向かって移行しつつ、この右側に衝止し、さらに反撥力を介してケーシング本体１とロック機構Ｂが回動（図５の矢印に示した時計方向に回転）する。このケーシング本体１とロック機構Ｂの回動により、シートＡが順次折畳まれる。そして、この例では、スプリング３の復帰による規制係止部９と、この規制部８との規制により、スプリング３の反撥力が抑制されて当該シートＡの急激な折畳みを回避できる。尚、シートＡの折畳みスピード（又は伏臥スピード）及び／又は起立スピードの調整と、シートＡのどの箇所で調整するか等は、スプリング３の規制係止部９と規制部８との係り合い、スプリング３の反撥力、両者の設けられた位置関係等を変更することにより、自由にできる。またシートＡを復帰することで、スプリング３の係止端３ａが、ケーシング本体１の溝５を、右側から左側に向かって移行しつつ、この左側に衝止し、さらに圧縮してケーシング本体１とロック機構Ｂが逆回動（図５の矢印に示した反時計方向に回転）する。このケーシング本体１とロック機構Ｂの逆回動により、シートＡが順次起立される。この起立時に、このスプリング３の規制係止部９と規制部８との規制により、圧縮力（反撥力）が抑制されて当該シートＡの急激な起立及び／又は折畳み等を回避できる。他の特徴は、前述の通りであり、適宜選択できる。そして、規制部８の一例では、筒部７よりの球体８−１の出入り及び弾性体８−３の反撥力、また脚部８−１ｂ、ブッシュ８−１ｃによる可動等を介してシートＡの各種の動きに対応できる。
【００６４】
図１３（イ）〜（ハ’）と、図１４（イ）、（ロ）と、図１５（イ）、（ロ）に示した例は、前記図９（ロ）、（ロ’）の変形例であり、筒部７に設けた球体８−１と、この球体８−１の離脱防止用の係止片８−２と、球体８−１の復帰を司り、また球体８−１に反撥力を与える弾性体８−３と、前記球体８−１を受ける球体受片８−１ａとでなる規制部８とスプリング３の凹凸９００ａとの各組合せを示している。この例では、球体８−１を受ける球体受片８−１ａが可動する。例えば、球体受片８−１ａの脚部８−１ｂを、内面１００ｂに設けた凹１００ｂ−１内で可動する。そして、この可動は、脚部８−１ｂの上方に差渡した枢軸８−４で行う構成である。この可動を利用して、球体８−１と球面との係り合いを制御する。例えば、可動を介して球体８−１と球面との接離（隙間の発生と、摩擦抵抗の軽減化等）を介してシートＡの可動（折畳及び起立等）制御と、スプリング３及び／又はケーシング本体１等に対する荷重の軽減化、動作の確実性等を図る。また前述と同様に球体８−１及び／又は球体受片８−１ａの強度の向上、安定性の確保、又は球体８−１の動きの確実性等を図ることを意図する。（イ）は筒部７に設けた可動式の脚部８−１ｂと球体８−１とで（規制部８）を構成し、スプリング３の外周面３００を平坦９００（規制係止部９）に構成し、この球体８−１と平坦９００との摩擦抵抗を利用して、シートＡの動きを規制する。（ロ）、（ハ）は、その可動状態を示すが、その規制は、何れの方向も略同じ規制と考えられる。また（ハ’）はその平面図である。そして、その効果は、前述の例に準ずる。また図１４（イ）、（ロ）と、図１５（イ）、（ロ）は、一方向にのみ可動可能とした構成であり、脚部８−１ｂを、内面１００ｂに設けた凹１００ｂ−１に一方向にのみ可動可能に設け、その方向に球体８−１が可動し、スプリング３の規制係止部３の凹凸９００ａとの摩擦抵抗を利用して、当該スプリング３の動きを規制する（シートＡの動きを規制する）。例えば、各図（イ）では、緩やかな規制であり、また同（ロ）では、強めの規制を図る等する。勿論、凹凸９００ａの波形によっても大きく異なり、この例では、図１４が強く規制し、図１５が緩やかな規制をした一例である。また効果は、前述の例に準ずる。この例では、シートＡの左右側に設置することを考慮して構成した。
【００６５】
図１６（イ）〜（ハ’）と、図１７（イ）、（ロ）と、図１８（イ）、（ロ）に示した例は、前記図１３（イ）〜（ハ’）と、図１４（イ）、（ロ）と、図１５（イ）、（ロ）とに示した構成の変形例であり、スプリング３を平坦構成としたことを特徴とする。その構成と、作用及び効果は、前述の例に準ずる。
【００６６】
図中１ａはケーシング蓋体で、このケーシング蓋体１ａは、ケーシング本体１に嵌合される。
【００６７】
また、以上で説明したケーシング本体１とケーシング蓋体１ａでケーシングを構成する。図中１１は操作アーム１０１と操作杆１００とを固止する連結ピン、１２は操作軸、１３はシートベルトを、それぞれ示す。
【００６８】
図中Ｃはレールを示しており、タンブル機構Ｄを移動する際に利用する構成であり、室内の空間利用と、利便性、出入りの簡便化等に役立てる。
【００６９】
尚、図１３の図表は、ケーシング本体１、ケーシング蓋体１ａ、又は筒部７、球体８−１、ブッシュ８−１ｃ（規制部８）及び／又はスプリング３（規制係止部９）の形態等と、シートバックＡ２の重量、効きのタイミング等を考慮して好ましい一例を示してある。この図表の一例として示した組合せは、用途、好み、又は通常の車種等を検討したものであるので、この内容を参考に、適宜選択する。この図表に示した、２ウェイ方式とは、シートバックＡ２の倒れ、戻りの双方に規制を働かせる方式であり、また１ウェイ方式とは、シートバックＡ２の戻り方向に規制を働かせる方式をそれぞれ示す。尚、これらの方式は、例えば、車種、車輌の大小、種類、シートの構造、又は嗜好等により決定される。また前記凹凸８００ａ、９００ａの形態、傾斜方向・角度は自由に変更できること、またこの変更を利用してシートＡに対する規制と、各種形態の車種とに対応できる。またシートＡ方向への取付けを考慮する。
【００７０】
【発明の効果】
請求項１の発明は、シートの可動を司る操作軸と、操作軸の可動を司るリクライニング機構と、リクライニング機構のロック、アンロックを司るロック機構と、ロック機構に固止したケーシングと、ケーシングに設けたスプリング取付け部に一端を係止するスプリングと、スプリングの係止端が挿入されるケーシングに設けた溝と、スプリングを作動するケーシングに設けた操作手段と、前記スプリングの外周面に設けた規制係止部と、この規制係止部に接触し、当該スプリングの可動を規制する規制部とで構成したシートリクライニング装置であって、規制部は、ケーシングに設けたガイド片を備えた数個の筒部と、数個の筒部に設けた球体、ブッシュ等で構成し、規制部とスプリングとの摩擦抵抗を利用し、スプリングの動きを多段階に規制する構成としたことを特徴とするシートリクライニング装置である。従って、請求項１は、ケーシングとスプリングとの改良により、当該スプリングを規制してシートの折畳み及び／又は起立、移動等を、緩やかに行うことで、各種の衝撃をなくし得ること、又はこの衝撃に基づく、前述の弊害解消が図れること、この改良で構成された簡単な構造を利用して、組付けの容易化、迅速化等を図り、またスプリングの加工の容易化、迅速化等が図れること、等の特徴がある。またスプリングの妄動（安定しない緊張及び／又は弛緩）を回避して、シートの確実な動きと、前記のようなスムーズな動きを確保できる実益がある。そして、スプリングとケーシングとの連繋強化を図り、スプリングにかかる荷重と、ケーシングの取付け部にかかる荷重に有効に対応できること、又は取付け部の破壊防止が図れること、等の特徴がある。殊に、本発明が意図するのは、部品点数の減少と、この減少に基づくコストの削減化、故障の発生回避、製造の容易化等の如く、製造及び販売面での優位性を確保する。そして、各種の車輌及び／又はシートの状況に、適確に対応することにある。
【００７１】
請求項２の発明は、請求項１に記載の規制係止部を、スプリングの外周面に形成した平坦構成とし、また規制部を、ケーシングの内方に突出したリブ形の複数の筒部の上面に設けた平坦構成としたシートリクライニング装置である。
【００７２】
請求項３の発明は、請求項１に記載の規制係止部を、スプリングの外周面の長手方向の略中央部に設けた略凹凸、波形、ローレット、突条、変形形状等の凹凸構成とし、また規制部を、ケーシングの内方に突出したリブ形の複数の筒部の上面に設けた平坦構成としたシートリクライニング装置である。
【００７３】
請求項４の発明は、請求項１に記載の規制係止部を、スプリングの外周面に形成した平坦構成とし、また規制部を、ケーシングの内方に突出したリブ形の複数の筒部の上面に設けた略凹凸、波形、ローレット、突条、変形形状等の凹凸構成としたシートリクライニング装置である。
【００７４】
従って、請求項２〜４は、請求項１の目的を達成し、しかもこの目的を達成するに最適で、各種のシート、又はシートの戻り荷重に対応できる規制係止部を提供できる。
【００７５】
請求項５の発明は、請求項１に記載の規制係止部を、スプリングの外周面に形成した略凹凸、波形、ローレット、突条、変形形状等の凹凸構成とし、また規制部を、ケーシングの内方に突出したリブ形の複数の筒部の上面に設けた略凹凸、波形、ローレット、突条、変形形状等の凹凸構成としたシートリクライニング装置である。従って、請求項５は、請求項１の目的を達成し、しかもこの目的を達成するに最適で、各種のシート、又はシートの戻り荷重にスムーズに対応できる規制係止部を提供できる。
【００７６】
【００７７】
【００７８】
【００７９】
【００８０】
【００８１】
【００８２】
【００８３】
【００８４】
【００８５】
【００８６】
【００８７】
【００８８】
【００８９】
【００９０】
【００９１】
【００９２】
【００９３】
【００９４】
【００９５】
【００９６】
【００９７】
【００９８】
【００９９】
【０１００】
【０１０１】
【図面の簡単な説明】
【図１】シートのリクライニング装置に本発明を採用した実施例の縮尺模式図
【図２】シートのタンブル機構に本発明を採用した実施例の縮尺模式図で、（イ）は起立状態を、（ロ）、（ハ）は各折畳み状態を示す
【図３】図１と図２の例を併合した実施例の縮尺模式図で、（イ）は起立状態を、（ロ）、（ハ）は各折畳み状態を示す
【図４】本発明の一実施例を示したケーシング本体の裏面図
【図５】図４の正面図
【図６】（イ）〜（ニ’）は、筒部とスプリングとの各組合せを示しており、（イ）は筒部とスプリングが平坦構成でなる例の側面図、（イ’）はその平面図、（ロ）は筒部が平坦構成で、スプリングが凹凸構成でなる一部欠截の側面図、（ロ’）はその平面図、（ハ）は筒部が凹凸構成で、スプリングが平坦構成でなる側面図、（ハ’）はその平面図、（ニ）は両者が凹凸構成でなる一部欠截の側面図、（ニ’）はその平面図
【図７】（イ）〜（ロ’）は、筒部の球体とスプリングとの各組合せを示しており、（イ）は球体とスプリングとが平坦構成でなる例の側面図、（イ’）はその平面図、（ロ）は球体が平坦構成で、スプリングが凹凸構成でなる一部欠截の側面図、（ロ’）はその平面図
【図８】（イ）〜（ニ’）は、筒部の球体を受ける球体受片とスプリングとの各組合せを示しており、（イ）は球体受片に設けた球体とスプリングとが平坦構成でなる例の側面図、（イ’）はその平面図、（ロ）は球体受片に設けた球体が平坦構成で、スプリングが凹凸構成でなる一部欠截の側面図、（ロ’）はその平面図、（ハ）は他の球体受片に設けた球体とスプリングが平坦構成でなる側面図、（ハ’）はその平面図、（ニ）は他の球体受片に設けた球体が平坦構成で、スプリングが凹凸構成でなる一部欠截の側面図、（ニ’）はその平面図
【図９】（イ）〜（ロ’）は、筒部の球体を受ける球体受片とスプリングとの各組合せを示しており、（イ）は他の球体受片に設けた球体とスプリングが平坦構成でなる側面図、（イ’）はその平面図、（ロ）は他の球体受片に設けた球体が平坦構成で、スプリングが凹凸構成でなる一部欠截の側面図、（ロ’）はその平面図
【図１０】（イ）〜（ニ’）は、筒部に設けたブッシュとスプリングとの各組合せを示しており、（イ）はブッシュとスプリングとが平坦構成でなる例の側面図、（イ’）はその平面図、（ロ）はブッシュが平坦構成で、スプリングが凹凸構成でなる一部欠截の側面図、（ロ’）はその平面図、（ハ）はブッシュが凹凸構成で、スプリングが平坦構成でなる側面図、（ハ’）はその平面図、（ニ）は両者が凹凸構成でなる一部欠截の側面図、（ニ’）はその平面図
【図１１】（イ）〜（ニ’）は、筒部に設けた他のブッシュとスプリングとの各組合せを示しており、（イ）は他のブッシュとスプリングとが平坦構成でなる例の側面図、（イ’）はその平面図、（ロ）はブッシュが平坦構成で、スプリングが凹凸構成でなる一部欠截の側面図、（ロ’）はその平面図、（ハ）はブッシュが凹凸構成で、スプリングが平坦構成でなる側面図、（ハ’）はその平面図、（ニ）は両者が凹凸構成でなる一部欠截の側面図、（ニ’）はその平面図
【図１２】ケーシング本体とケーシング蓋体等の周辺部を説明する断面である。
【図１３】（イ）〜（ハ’）は、筒部の球体を受ける球体受片とスプリングとの各組合せを示しており、（イ）は球体受片に設けた球体とスプリングが凹凸構成でなる側面図、（ロ）、（ハ）は可動状態を示す側面図、（ハ’）はその平面図
【図１４】（イ）、（ロ）は、筒部の球体を受ける球体受片とスプリングとの各組合せを示しており、（イ）は球体受片に設けた球体とスプリングが凹凸構成でなる側面図、（ロ）は可動状態を示す側面図
【図１５】（イ）、（ロ）は、筒部の球体を受ける球体受片とスプリングとの各組合せを示しており、（イ）は球体受片に設けた球体とスプリングが凹凸構成でなる側面図、（ロ）は可動状態を示す側面図
【図１６】（イ）〜（ハ’）は、筒部の球体を受ける球体受片とスプリングとの各組合せを示しており、（イ）は球体受片に設けた球体とスプリングが平坦構成でなる側面図、（ロ）、（ハ）は可動状態を示す側面図、（ハ’）はその平面図
【図１７】（イ）、（ロ）は、筒部の球体を受ける球体受片とスプリングとの各組合せを示しており、（イ）は球体受片に設けた球体とスプリングが平坦構成でなる側面図、（ロ）は可動状態を示す側面図
【図１８】（イ）、（ロ）は、筒部の球体を受ける球体受片とスプリングとの各組合せを示しており、（イ）は球体受片に設けた球体とスプリングが平坦構成でなる側面図、（ロ）は可動状態を示す側面図
【図１９】規制係止部と規制部との各種の組合せを説明し、各種の車種、シートの形態、シートの多様な使用に対応可能な状況を説明する図表である。
【符号の説明】
Ａシート
Ａ１シートクッション
Ａ２シートバック
Ｂロック機構
Ｂ１リクライニングケース
Ｃレール
Ｄタンブル機構
１ケーシング本体
１ａケーシング蓋体
１ｂ鍔片
１００ａ環状部
１００ｂ内面
１００ｂ−１凹
２固定部材
２００脚
３スプリング
３ａ係止端
３００外周面
４部屋
４００スプリング取付け部
５溝
６ガイド片
７筒部
７００上面
８規制部
８−１球体
８−１ａ球体受片
８−１ｂ脚部
８−１ｃブッシュ
８−２係止片
８−３弾性体
８−４枢軸
８００平坦
８００ａ凹凸
９規制係止部
９００平坦
９００ａ凹凸
９００ｂ平坦面部
１０操作ハンドル
１００操作杆
１０１操作アーム
１１連結ピン
１２操作軸
１３シートベルト[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle seat reclining device (including a seat tumble mechanism).
[0002]
[Prior art]
A conventional seat reclining device has a structure in which a leaf spring is mounted on an operation shaft penetrating the lock mechanism and the casing case, and the leaf spring is engaged with the casing case and the operation shaft. This operating shaft is rotated by the handle operation (rotation) to lock and unlock the locking mechanism, and to tension and relax the leaf spring (releasing the tension), so that the seat can be reclaimed at the desired speed and / or load. It is a configuration to run. In this conventional configuration, the reclining adjustment (folding and / or returning of the seat) has a structure that depends exclusively on the repulsive force of the leaf spring, so that an impact at the time of folding or the like sometimes causes an unexpected failure. There is a fear.
[0003]
An example of this obstacle is a problem due to impact, for example, damage to a weak child such as an infant, elderly person, sick person, etc., injury due to a hard member of this sheet, property damage accident, or feeling of fear thereof, this damage It has been pointed out that there are problems such as injuries due to the escalation of the above, or the probability of being thrown out of the sheet. Next, when it is desired to use the sheet in various ways, that is, to fold and / or return the sheet quickly (standing at an appropriate inclination angle), and to fold and / or return the sheet, speed and / or speed change, etc. This is because the operation cannot be performed reliably.
[0004]
In addition, this kind of seat reclining apparatus has a request | requirement which can respond to the diversification of recent vehicle types. In other words, in the process of changing from a passenger car to a wagon, a one-box car or a minivan, it has been pointed out that when the seat back is returned to the front by full flattening, the speed of the seat back will be increased in the middle. In addition, it has become an urgent task to achieve the above-described improvement of obstacles and diversification of seat forms at the same time.
[0005]
As a mechanism (technique) corresponding to this situation, the following structure is put into practical use. In brief, there are devices provided with secondary means such as a torsion spring that complements the strength of the spring, or an impact absorbing member. This device can be expected to have a buffering effect. However, with this degree of buffering effect, it is impossible to satisfy almost all conditions, and problems such as a complicated structure can be considered.
[0006]
Prior art is listed as part of the solution related to the conventional technology and the mechanism related to the improvement. For example, the invention disclosed in Japanese Patent Application Laid-Open No. 1-107708 (1) that restricts the movement of the rotating side member by interposing a viscous grease, and the return restriction by the return spring of the seat back is used to control the return speed of the seat back. The invention “Document (2)” disclosed in Japanese Patent Laid-Open No. 9-252868 or the invention “Document (3)” disclosed in Japanese Utility Model Laid-Open No. 5-46347 may be mentioned.
[0007]
[Problems to be solved by the invention]
Hereinafter, in the inventions of the documents (1) to (3), a restriction means called a return spring is added. Therefore, when this configuration is adopted, it is necessary to procure a spring and provide a mechanism for attaching the spring in a casing or the like. In the case where the mechanism to be attached is provided, there are improvements such as a complicated structure and a limited model of vehicles that can be equipped with the mechanism to be attached (lack of versatility). However, the cost of the procurement of the parts and the equipment of the attached mechanism is increased. It should be noted that only the mechanism to be provided may have problems such as that there are points to be solved regarding the fulfillment of functions required as the seat reclining device and the seat return speed control.
[0008]
Further, in the literature (2) and the like, in the configuration employing the auxiliary restricting means such as a return spring, the repulsive force adjustment between the auxiliary restricting means and the spring is delicate, and the auxiliary restricting means and / or the spring (both are referred to as both). ) Is uncertain of the certainty of movement, or the assembly of both requires high technology, extensive experience, and so on. Further, structurally, there may be problems such as leaving a problem in the smooth movement of the seat or causing an increase in cost.
[0009]
The present applicant has already submitted a number of basic applications as improvements of the prior art and documents (1) to (3). The present invention relates to the invention of individual parts of this improved invention.
[0010]
[Means for Solving the Problems]
In the invention of claim 1, by improving the casing and the spring, the spring is regulated and the seat is folded and / or raised, moved, etc. gently, thereby eliminating various impacts, or against this impact. Based on the above-mentioned problem elimination, the simple structure constructed by this improvement is used to facilitate and speed up the assembly, and to facilitate and speed up the spring processing. Intended. In addition, it is intended to prevent the springs from loosening (unstable tension and / or relaxation) and to ensure the reliable movement of the seat and the smooth movement as described above. And the connection reinforcement | strengthening of a spring and a casing is aimed at, it respond | corresponds effectively to the load concerning a spring, the load concerning the attaching part of a casing, or aiming at prevention of destruction of an attaching part. In particular, the present invention intends to ensure advantages in terms of manufacturing and sales, such as a reduction in the number of parts, cost reduction based on this reduction, avoidance of failure, and ease of manufacturing. There is. And it intends to respond appropriately to the situation of various vehicles and / or seats.
[0011]
An operation shaft that governs the movement of the seat, a reclining mechanism that governs the movement of the operation shaft, a locking mechanism that controls locking and unlocking of the reclining mechanism, a casing secured to the locking mechanism, A spring for locking one end to a spring mounting portion provided in the casing; a groove provided in the casing into which the locking end of the spring is inserted; The operating means provided in the casing for operating the spring, the regulation locking portion provided on the outer peripheral surface of the spring, and the regulation locking portion are brought into contact with each other so that the spring can be moved. Regulatory department to regulate And consisted of The seat reclining device, wherein the restricting portion includes a plurality of cylindrical portions provided with guide pieces provided in the casing, and a sphere, a bush, and the like provided in the several cylindrical portions. A seat reclining device characterized in that it uses a frictional resistance with a spring to restrict the movement of the spring in multiple stages. It is.
[0012]
The inventions of Claims 2 to 4 achieve the object of Claim 1 and are optimal for achieving this object, and are intended to provide various types of seats or a regulation locking portion that can cope with the return load of the seats. To do.
[0013]
A second aspect of the present invention is a flat configuration in which the restriction locking portion according to claim 1 is formed on an outer peripheral surface of the spring, and the restriction portion is A plurality of rib-shaped cylindrical portions protruding inward of the casing It is the sheet | seat reclining apparatus made into the flat structure provided in the upper surface.
[0014]
A third aspect of the present invention has a concave and convex configuration such as a substantially concave and convex shape, a corrugated shape, a knurled shape, a ridge shape, a deformed shape, and the like, in which the regulation locking portion according to the first aspect is provided at a substantially central portion in the longitudinal direction of the outer peripheral surface of the spring. In addition, the regulation part A plurality of rib-shaped cylindrical portions protruding inward of the casing It is the sheet | seat reclining apparatus made into the flat structure provided in the upper surface.
[0015]
A fourth aspect of the present invention has a flat configuration in which the restriction locking portion according to claim 1 is formed on the outer peripheral surface of the spring, and the restriction portion is A plurality of rib-shaped cylindrical portions protruding inward of the casing Is a sheet reclining device having a concavo-convex configuration such as substantially concavo-convex, corrugated, knurled, protruding, deformed shape, etc.
[0016]
The invention of claim 5 achieves the object of claim 1 and is optimal for achieving this object, and is intended to provide a regulation locking portion that can smoothly cope with various seats or return loads of the seats.
[0017]
A fifth aspect of the present invention provides the restrictive locking portion according to the first aspect of the present invention with an uneven structure such as a substantially uneven shape, a corrugated shape, a knurled shape, a protruding shape, a deformed shape, etc. formed on the outer peripheral surface of the spring, and the restricting portion, A plurality of rib-shaped cylindrical portions protruding inward of the casing Is a sheet reclining device having a concavo-convex configuration such as substantially concavo-convex, corrugated, knurled, protruding, deformed shape, etc.
[0018]
[0019]
[0020]
[0021]
[0022]
[0023]
[0024]
[0025]
[0026]
[0027]
[0028]
[0029]
[0030]
[0031]
[0032]
[0033]
[0034]
[0035]
[0036]
[0037]
[0038]
[0039]
[0040]
[0041]
[0042]
[0043]
[0044]
[0045]
[0046]
[0047]
[0048]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0049]
FIG. 1 is a schematic scale diagram of an embodiment in which the present invention is applied to a seat reclining device, FIG. 2 is a schematic scale diagram of an embodiment in which the present invention is applied to a seat tumble mechanism, and (A) is a standing state, (B) and (C) show each folded state. FIG. 3 is a schematic scale diagram of the embodiment in which the examples of FIG. 1 and FIG. 2 are combined. (A) shows the standing state, (B) and (C) show the folded states. 4 to 11 show an embodiment described in claims 1 to 4. FIG. 4 is a rear view of the casing body, FIG. 5 is a front view of the casing body, and FIGS. ) Shows each combination of a cylindrical portion and a spring, (A) is a side view of an example in which both (a collective name of the cylindrical portion and the spring) have a flat configuration, (A ') is a plan view thereof, ( (B) is a side view of a partially cutout with a cylindrical portion having a flat configuration and a spring having an uneven configuration, (b) is a plan view thereof, and (c) is a cylindrical configuration with an uneven configuration and a spring having a flat configuration. Side view, (C ') is a plan view thereof, (D) is a side view of a partially cut-out configuration in which both have a concave-convex configuration, (D') is a plan view thereof, and FIGS. , And (b) are side views of an example in which both (a collective term for a sphere and a spring) are in a flat configuration, and (b ') is a flat view. (B) is a side view of a partially broken surface in which a sphere has a flat configuration and a spring has an uneven configuration, (b ′) is a plan view thereof, and FIGS. Each of the combinations of a sphere receiving piece and a spring for receiving the sphere is shown, and (a) is a side view of an example in which both (a general term for a sphere and a spring provided on the sphere receiving piece) are in a flat configuration. ) Is a plan view thereof, (B) is a side view of a part of a sphere provided on a sphere receiving piece with a flat configuration, and a spring has an uneven configuration, (B ') is a plan view thereof, and (C) is another plan view. A side view in which the sphere and the spring provided on the sphere receiving piece have a flat configuration, (c) is a plan view thereof, (d) is a sphere provided on the other sphere receiving piece in a flat configuration, and the spring has an uneven configuration. FIG. 9 (a) to (b ′) are each a combination of a sphere receiving piece and a spring for receiving the sphere of the cylindrical portion. (A) is a side view in which a sphere and a spring provided on another sphere receiving piece have a flat configuration, (a ′) is a plan view thereof, and (b) is a sphere provided on another sphere receiving piece. Is a side view of a partially cutout in which the spring has a concavo-convex configuration, (b ′) is a plan view thereof, and FIGS. 10 (a) to (d ′) are views of a bush and a spring provided on the cylindrical portion. Each combination is shown, (A) is a side view of an example in which both (bush and spring are generic names) have a flat configuration, (A ') is a plan view thereof, and (B) is a flat configuration with a bush. (B) is a plan view of the cutout, and (c) is a side view of the bush having a rugged configuration and a spring having a flat configuration, (c) is a plan view thereof. (D) is a side view of a partially cut-out part in which both have a concavo-convex configuration, (d ') is a plan view thereof, and FIGS. (B) is a side view of an example in which both (a general term for other bushes and springs) are in a flat configuration, (b ') is a plan view thereof, (B) is a side view of a partially cutout with the bush having a flat configuration and the spring has an uneven configuration, (b ') is a plan view thereof, and (c) is a side view with the bush having an uneven configuration and the spring having a flat configuration. , (C ') is a plan view thereof, (d) is a side view of a partially cut-out configuration in which both are concave and convex, (d') is a plan view thereof, and FIG. 12 is a peripheral part such as a casing body and a casing lid body. FIG. 13 illustrates various combinations of the restricting locking portion and the restricting portion, and various vehicle types, seat configurations, and various uses of the seat (for example, folding and / or returning speed of the seat). -It is a chart explaining the situation which can respond to load, safety, etc.).
[0050]
The seat A shown in FIGS. 1 to 3 is for a vehicle (not shown), and the seat A includes a seat cushion A1 of the seat A and a seat back A2 of the seat A. The seat cushion A1 and / or the seat back A2 of the seat A can be folded. Reference numeral B denotes a lock mechanism which includes a lock / unlock mechanism for controlling the standing and folding of the seat A.
[0051]
An embodiment according to claim 1 shown in FIGS. 4 and 5 will be described.
[0052]
Reference numeral 1 denotes a casing body provided with an annular portion 100a constituting the lock mechanism B. The casing body 1 is fixed to the reclining case B1 by locking the legs 200 of the fixing member 2 to the flange piece 1b of the casing body. ing. The casing body 1 will be described in detail. The casing body 1 has a chamber 4 having a spring mounting portion 400 for accommodating the spring 3, and a locking end 3 a (moving side end) of the spring 3 is inserted into the outer periphery of the chamber 4. A circular arc-shaped groove 5 is formed. Further, on the inner surface I00b of the annular portion 100a erected from the periphery of the casing 1, there are several guide pieces 6 for guiding the spring 3 and several rib-shaped cylindrical portions 7 for restricting the movement of the spring 3. . And the upper surface 700 of this cylinder part 7 has the control part 8, This control part 8 becomes a lock relationship with the control lock part 9 provided in the outer peripheral surface 300 of the said spring 3. As shown in FIG. Depending on the frictional resistance, the meshing (slip resistance) relationship, or the degree of engagement, etc., the various vehicle types, seat configurations, and various uses of the seat can be supported. The casing body 1 is made of resin, but metal, composite material, etc. may be used.
[0053]
Next, an example of the locking relationship between the restriction portion 8 and the restriction locking portion 9 will be specifically described.
[0054]
In the example shown in FIGS. 6A to 6D, each combination of the restriction portion 8 of the cylindrical portion 7 and the restriction locking portion 9 of the spring 3 is shown. The upper surface 700 is configured as a flat 800 (regulating portion 8), the outer peripheral surface 300 of the spring 3 is configured as a flat 900 (regulating locking portion 9), and the friction resistance between the flat 800 and 900 is used to make the sheet A The movement of the seat cushion A1 and / or the seat back A2 is restricted. In (b), the upper surface 700 of the cylindrical portion 7 is configured to be flat 800, and the outer peripheral surface 300 of the spring 3 is configured to have unevenness 900a (regulation locking portion 9), and the frictional resistance between the flat 800 and unevenness 900a is utilized. Then, the movement of the sheet A is restricted. Further, (c) is configured such that the upper surface 700 of the cylindrical portion 7 is configured as an unevenness 800a (regulating portion 8), and the outer peripheral surface 300 of the spring 3 is configured as a flat 900, and the frictional resistance between the unevenness 800a and the flat 900 is utilized. The movement of the seat A is restricted. In (d), the upper surface 700 of the cylindrical portion 7 is configured to have unevenness 800a, and the outer peripheral surface 300 of the spring 3 is configured to have unevenness 900a (regulation locking portion 9), and the frictional resistance between the unevenness 800a and the unevenness 900a is utilized. Then, the movement of the sheet A is restricted.
[0055]
The movement of the seat A can be restricted by changing the frictional resistance (sliding degree) by changing the shape, material, and the like of the unevenness 800a of the cylindrical portion 7 and the unevenness 900a of the spring 3. Further, the flat portion 800 and the uneven portion 800a of the cylindrical portion 7 and / or the flat portion 900 and the uneven portion 900a of the spring 3 can be separately attached to and detached from the main body of the cylindrical portion 7 and the main body of the spring 3, respectively. By this exceptional means (hereinafter the same), it is beneficial to be able to change the frictional resistance, or to respond to the request, and to change it when necessary and to find it useful. Therefore, the sheet A can satisfy various demands, or can be put to practical use by opening the way to wide use (the same applies hereinafter).
[0056]
In the example shown in FIGS. 7A to 7B, a spherical body 8-1 provided on the cylindrical portion 7 and a locking piece 8-2 for preventing the spherical body 8-1 from separating (extending from the cylindrical portion 7). The arrangement of the elastic member 8-3 and the spring 3 is shown in combination with the spring 3 as shown in FIG. 8), the outer peripheral surface 300 of the spring 3 is formed into a flat 900 (restriction locking portion 9), and the movement of the seat A is restricted using the frictional resistance between the spherical body 8-1 and the flat 900. . Further, (b) is constituted by a sphere 8-1 provided on the cylindrical portion 7, and the outer peripheral surface 300 of the spring 3 is constituted by unevenness 900a (regulation locking portion 9), and the flat 800 and the unevenness 900a of this sphere 8-1. The movement of the sheet A is regulated using the frictional resistance. The characteristic of the spring 3 by the exceptional means is in accordance with the above-mentioned example. Although not shown in the drawing, it is possible to provide (fine) irregularities and restricting means on the sphere 8-1 to adopt a configuration substantially similar to the above-described example, and to achieve substantially the same effect.
[0057]
In the example shown in FIGS. 8A to 8B, a spherical body 8-1 provided on the cylindrical portion 7 and a locking piece 8-2 for preventing the spherical body 8-1 from separating (extending from the cylindrical portion 7). An ideal configuration), an elastic body 8-3 that controls the return of the sphere 8-1 and gives a repulsive force to the sphere 8-1; a sphere receiving piece 8-1a that receives the sphere 8-1; (B) is composed of a spherical body 8-1 (regulator 8) provided on the cylindrical portion 7, and the outer peripheral surface 300 of the spring 3 is flat 900 ( The movement of the sheet A is regulated by using the frictional resistance between the spherical body 8-1 and the flat 900, which is configured as a regulation locking portion 9). Further, (b) is constituted by a sphere 8-1 provided on the cylindrical portion 7, and the outer peripheral surface 300 of the spring 3 is constituted by unevenness 900a (regulation locking portion 9), and the flat 800 and the unevenness 900a of this sphere 8-1. The movement of the sheet A is regulated using the frictional resistance. The characteristic of the spring 3 by the exceptional means is in accordance with the above-mentioned example. Although not shown in the drawing, it is possible to provide (fine) irregularities and restricting means on the sphere 8-1 to adopt a configuration substantially similar to the above-described example, and to achieve substantially the same effect. The spherical body 8-1 is received by the spherical surface of the spherical body receiving piece 8-1a. However, the spherical member 8-1 is provided with a restricting means (not shown) similar to that described above to restrict the spherical body 8-1 and the spherical surface. It is also possible to consider a single restriction by this restriction, or a combined restriction in which the sphere 8-1 and the spring 3 are added. And in this example, if the repulsive force of the elastic body 8-3 is used for the spherical body 8-1, the regulation of the spherical body 8-1 and the spring 3 can be variously changed.
[0058]
8 (C) to (D ') is a modified example of FIGS. 8 (A) to (B'), and the leg portion of the sphere receiving piece 8-1a for receiving the sphere 8-1. 8-1b is inserted into the recess 100b-1 provided on the inner surface 100b to improve the strength of the sphere 8-1 and / or the sphere receiving piece 8-1a, to ensure stability, or to move the sphere 8-1. It is intended to ensure certainty.
[0059]
The examples shown in FIGS. 9A to 9B are modifications of FIGS. 8C to 8D, and the sphere 8-1 provided on the cylindrical portion 7 and the sphere 8-1. The locking piece 8-2 for preventing the detachment of the ball, the elastic body 8-3 which controls the return of the sphere 8-1 and gives a repulsive force to the sphere 8-1 and the sphere receiving piece 8 which receives the sphere 8-1 Each combination of the restricting portion 8 and the spring 3 is shown as -1a. In this example, the pivot 8 is inserted into the recess 100b-1 provided on the inner surface 100b of the leg 8-1b of the sphere receiving piece 8-1a for receiving the sphere 8-1 and passed to the leg 8-1b. The engagement between the spherical body 8-1 and the spherical surface is controlled so as to be movable (can be swung) via -4. For example, the movement (folding, standing up, etc.) of the seat A via the contact and separation between the spherical body 8-1 and the spherical surface (generation of a gap, reduction of frictional resistance, etc.) via the movement, and the spring 3 and / or Alternatively, the load on the casing body 1 or the like is reduced, and the reliability of the operation is improved. Further, as described above, it is intended to improve the strength of the sphere 8-1 and / or the sphere receiving piece 8-1a, ensure stability, or ensure the movement of the sphere 8-1. (A) comprises a movable leg portion 8-1b and a spherical body 8-1 provided on the cylindrical portion 7 (regulating portion 8), and the outer peripheral surface 300 of the spring 3 is flat 900 (regulating locking portion 9). The movement of the sheet A is regulated by using the frictional resistance between the sphere 8-1 and the flat 900. Further, (b) is constituted by a movable leg portion 8-1b and a sphere 8-1 provided on the cylindrical portion 7, and an outer peripheral surface 300 of the spring 3 is constituted by an unevenness 900a (regulation locking portion 9). The movement of the sheet A is regulated using the frictional resistance between the 8-1 and the unevenness 900a. Also in this example, the above-mentioned exceptional means of the spring 3, the sphere 8-1 is provided with (fine) irregularities, the regulating means, and the sphere 8-1 is received by the spherical surface of the sphere receiving piece 8-1a. A configuration such as providing a restriction means (not shown) similar to that described above on the spherical surface can be employed.
[0060]
In the example shown in FIGS. 10 (a) to 10 (d '), a restricting portion 8 comprising a bush 8-1c provided on the cylindrical portion 7 and a locking piece 8-2 for preventing the detachment of the bush 8-1c. And combinations of springs 3 are shown. (A) The upper surface 700 of the bush 8-1c is configured to be flat 800 (regulating portion 8), and the outer peripheral surface 300 of the spring 3 is configured to be flat 900 (regulating locking portion 9). The movement of the seat A (the seat cushion A1 and / or the seat back A2) is regulated using the frictional resistance. In (b), the upper surface 700 of the bush 8-1c is configured as a flat 800, and the outer peripheral surface 300 of the spring 3 is configured as an unevenness 900a (regulation locking portion 9), and the frictional resistance between the flat 800 and the unevenness 900a is increased. By using this, the movement of the sheet A is regulated. Further, (c) is configured such that the upper surface 700 of the bush 8-1c is configured as an uneven surface 800a (regulator 8), and the outer peripheral surface 300 of the spring 3 is configured as a flat 900, and the frictional resistance between the uneven surface 800a and the flat 900 is utilized. Thus, the movement of the sheet A is restricted. In (d), the upper surface 700 of the bush 8-1c is configured as an uneven surface 800a, and the outer peripheral surface 300 of the spring 3 is configured as an uneven surface 900a (regulation locking portion 9), and the frictional resistance between the uneven surface 800a and the uneven surface 900a is increased. By using this, the movement of the sheet A is regulated. The engagement between the bush 8-1c and the spring 3 in this example is in accordance with the above-described examples (a) to (d ') of FIG.
[0061]
In the example shown in FIGS. 11 (a) to 11 (d '), a restricting portion 8 comprising a bush 8-1c provided on the cylinder portion 7 and a locking piece 8-2 for preventing the detachment of the bush 8-1c. And combinations of springs 3 are shown. In this example, the bush 8-1c is movably inserted into the cylindrical portion 7. The bush 8-1c is movable through a pivot 8-4 that is passed to the leg 8-1b. With this movement, the engagement between the bush 8-1c and the spring 3 is controlled. For example, the movement (folding and standing up) control of the seat A through the contact between the bush 8-1c and the spring 3 (moving gap, reduction of frictional resistance, etc.), and the spring 3 and To reduce the load on the casing body 1 and the like and to ensure the operation reliability. Also, as described above, it is intended to improve the strength of the bush 8-1c, ensure stability, or ensure the movement of the bush 8-1c. In this example, (a) to (d ') are similar to the above-described examples of Figs. 10 (a) to (d'), but the movable feature of the bush 8-1c is taken into account. Note that the engagement between the bush 8-1c and the spring 3 in this example is in accordance with the above-described examples (a) to (d ') of FIG.
[0062]
The unevenness 900a of the spring 3 is provided substantially at the center, and both end portions thereof are flat surface portions 900b, and are intended to improve the strength and durability of the spring 3. And the form, number (pitch), etc. of this unevenness | corrugation 900a control the speed at the time of the shrinkage | contraction and / or expansion of the said spring 3. FIG. Specifically, by suppressing the speed of the contraction and / or expansion, the impact of the sheet A on people, objects, etc. is mitigated. In addition, it is conceivable that the stand-up and / or folding speed can be appropriately controlled to be friendly to humans and ensure the desired speed.
[0063]
Further, the casing body 1 is provided with an operation handle 10 and an operation rod 100 that constitute the operation means. Operation rod 100 And the movement of the operation arm 101 causes the casing body 1 to rotate and unlock the lock mechanism B. The spring 3 repels through this unlock, and the locking end 3a of the spring 3 is While shifting the groove 5 of the casing body 1 from the left side to the right side The casing body 1 and the lock mechanism B are rotated ( Rotate clockwise as indicated by the arrow in FIG. ) As the casing body 1 and the lock mechanism B rotate, the sheets A are sequentially folded. In this example, the repulsive force of the spring 3 is suppressed by the restriction of the restriction locking portion 9 due to the return of the spring 3 and the restriction portion 8, and the rapid folding of the seat A can be avoided. It should be noted that the adjustment of the folding speed (or prone speed) and / or the standing speed of the seat A and the position of the seat A to be adjusted are related to the restriction locking portion 9 and the restriction portion 8 of the spring 3. This can be done freely by changing the repulsive force of the spring 3 and the positional relationship between the two. Further, by returning the seat A, the locking end 3a of the spring 3 is While shifting the groove 5 of the casing body 1 from the right side to the left side , It is knocked to the left side, and further compressed, the casing body 1 and the lock mechanism B rotate backward ( Rotate counterclockwise as indicated by the arrow in FIG. ) By the reverse rotation of the casing body 1 and the lock mechanism B, the sheets A are erected sequentially. At the time of standing, the compression force (repulsive force) is suppressed by the restriction of the restriction locking portion 9 and the restriction portion 8 of the spring 3, and a sudden standing and / or folding of the sheet A can be avoided. Other features are as described above, and can be selected as appropriate. In one example of the restricting portion 8, the seat A is moved through the movement of the spherical body 8-1 from the cylindrical portion 7 and the repulsive force of the elastic body 8-3, the movement of the leg portion 8-1 b and the bush 8-1 c. It can respond to various movements.
[0064]
The examples shown in FIGS. 13 (a) to (c '), FIGS. 14 (a) and (b), and FIGS. 15 (a) and (b) are the same as those shown in FIGS. 9 (b) and (b'). This is a modified example, and the sphere 8-1 provided on the cylindrical portion 7, the locking piece 8-2 for preventing the detachment of the sphere 8-1 and the return of the sphere 8-1 are managed. Each combination of the restricting portion 8 and the unevenness 900a of the spring 3 including the elastic body 8-3 that gives a repulsive force and the sphere receiving piece 8-1a that receives the sphere 8-1 is shown. In this example, the sphere receiving piece 8-1a that receives the sphere 8-1 moves. For example, the leg portion 8-1b of the sphere receiving piece 8-1a is movable in the recess 100b-1 provided on the inner surface 100b. And this movement is the structure performed with the pivot 8-4 passed over the leg part 8-1b. Utilizing this movement, the engagement between the sphere 8-1 and the spherical surface is controlled. For example, the movement (folding, standing up, etc.) of the seat A via the contact and separation between the spherical body 8-1 and the spherical surface (generation of a gap, reduction of frictional resistance, etc.) via the movement, and the spring 3 and / or Alternatively, the load on the casing body 1 or the like is reduced, and the reliability of the operation is improved. Further, as described above, it is intended to improve the strength of the sphere 8-1 and / or the sphere receiving piece 8-1a, ensure stability, or ensure the movement of the sphere 8-1. (A) comprises a movable leg portion 8-1b and a spherical body 8-1 provided on the cylindrical portion 7 (regulating portion 8), and the outer peripheral surface 300 of the spring 3 is flat 900 (regulating locking portion 9). The movement of the sheet A is regulated by using the frictional resistance between the sphere 8-1 and the flat 900. (B) and (C) show the movable state, and the regulation is considered to be substantially the same regulation in any direction. Further, (c ′) is a plan view thereof. And the effect is based on the above-mentioned example. 14 (a) and 14 (b) and FIGS. 15 (b) and 15 (b) are configured to be movable only in one direction, and a recess 100b- provided with a leg portion 8-1b on the inner surface 100b. 1 is provided so as to be movable only in one direction, and the sphere 8-1 is movable in that direction, and the movement of the spring 3 is regulated by using the frictional resistance with the unevenness 900a of the regulation locking portion 3 of the spring 3. (The movement of the sheet A is regulated). For example, in each figure (A), the regulation is moderate, and in the same figure (B), a stronger regulation is aimed at. Of course, it varies greatly depending on the waveform of the unevenness 900a. In this example, FIG. 14 is an example in which regulation is strong and FIG. 15 is an example in which regulation is moderate. The effect is similar to the above example. In this example, it is configured in consideration of installation on the left and right sides of the sheet A.
[0065]
16 (a) to (c '), FIGS. 17 (a) and (b), and FIGS. 18 (a) and (b), the examples shown in FIGS. 14 (a) and 14 (b) and FIGS. 15 (a) and 15 (b) are modified examples of the configuration, and the spring 3 is flat. The configuration, operation, and effect are in accordance with the above-described example.
[0066]
In the figure, reference numeral 1 a denotes a casing lid, which is fitted to the casing body 1.
[0067]
Moreover, a casing is comprised by the casing main body 1 and the casing cover body 1a which were demonstrated above. In the figure, 11 is a connecting pin for securing the operating arm 101 and the operating rod 100, 12 is an operating shaft, and 13 is a seat belt.
[0068]
In the figure, C denotes a rail, which is a configuration used when moving the tumble mechanism D, and is useful for indoor space use, convenience, and easy access.
[0069]
13 is a form of the casing main body 1, the casing lid 1a, or the cylindrical portion 7, the spherical body 8-1, the bush 8-1c (regulating portion 8) and / or the spring 3 (regulating locking portion 9). Etc., and a preferred example is shown in consideration of the weight of the seat back A2, the timing of effectiveness, and the like. The combinations shown as an example of this chart are based on examinations of applications, preferences, or normal vehicle types, and so are selected as appropriate with reference to these contents. The two-way method shown in this chart is a method that applies restrictions to both the fall and return of the seat back A2, and the one-way method is a method that applies restrictions to the return direction of the seat back A2. . These methods are determined by, for example, the vehicle type, the size of the vehicle, the type, the structure of the seat, or the preference. In addition, the form, inclination direction and angle of the irregularities 800a and 900a can be freely changed, and this change can be used to deal with restrictions on the seat A and various types of vehicles. Also consider mounting in the direction of sheet A.
[0070]
【The invention's effect】
The invention of claim 1 includes an operation shaft that controls movement of the seat, a reclining mechanism that controls movement of the operation shaft, a locking mechanism that controls locking and unlocking of the reclining mechanism, a casing secured to the locking mechanism, A spring for locking one end to a spring mounting portion provided in the casing; a groove provided in the casing into which the locking end of the spring is inserted; Activate the spring casing Operating means provided on the outer periphery of the spring, a restriction locking portion provided on the outer peripheral surface of the spring, and the contact with the restriction locking portion to move the spring. Regulatory department to regulate And consisted of The seat reclining device, wherein the restricting portion is composed of several cylindrical portions provided with guide pieces provided on the casing, and a sphere, a bush, and the like provided on the several cylindrical portions, and friction between the restricting portion and the spring. A seat reclining device that uses a resistor to restrict the movement of the spring in multiple stages. It is. Therefore, according to the first aspect of the present invention, various impacts can be eliminated by restricting the spring and gently folding and / or raising, moving and the like of the seat by improving the casing and the spring. Based on the above, the above-mentioned problems can be solved, the simple structure constituted by this improvement can be used to facilitate and speed up the assembly, and the spring processing can be facilitated and speeded up. There are features such as that. In addition, there is an actual advantage that the reliable movement of the seat and the smooth movement as described above can be ensured by avoiding the loosening of the spring (unstable tension and / or relaxation). Then, the connection between the spring and the casing is strengthened, and it is possible to effectively cope with the load applied to the spring and the load applied to the attachment portion of the casing, or the attachment portion can be prevented from being broken. In particular, the present invention intends to ensure advantages in terms of manufacturing and sales, such as a reduction in the number of parts, cost reduction based on this reduction, avoidance of failure, and ease of manufacturing. . And it exists in responding to the condition of various vehicles and / or a seat appropriately.
[0071]
The invention of claim 2 has a flat configuration in which the restriction locking portion according to claim 1 is formed on the outer peripheral surface of the spring, and the restriction portion is A plurality of rib-shaped cylinders projecting inward from the casing It is the sheet | seat reclining apparatus made into the flat structure provided in the upper surface.
[0072]
According to a third aspect of the present invention, the restriction locking portion according to the first aspect has a concave-convex configuration such as a substantially concave-convex shape, a corrugated shape, a knurled shape, a ridge shape, a deformed shape, etc. provided at a substantially central portion in the longitudinal direction of the outer peripheral surface of the spring. And the regulation department, A plurality of rib-shaped cylinders projecting inward from the casing It is the sheet | seat reclining apparatus made into the flat structure provided in the upper surface.
[0073]
The invention of claim 4 has a flat configuration in which the restriction locking portion according to claim 1 is formed on the outer peripheral surface of the spring, and the restriction portion is A plurality of rib-shaped cylinders projecting inward from the casing Is a sheet reclining device having a concavo-convex configuration such as substantially concavo-convex, corrugated, knurled, protruding, deformed shape, etc.
[0074]
Accordingly, the second to fourth aspects achieve the object of the first aspect, and are optimal for achieving the object, and can provide various types of seats or a regulation locking portion that can cope with the return load of the seats.
[0075]
The invention according to claim 5 is configured such that the restriction locking portion according to claim 1 has a substantially uneven structure such as a substantially uneven shape, a corrugated shape, a knurled shape, a ridge shape, a deformed shape, etc. formed on the outer peripheral surface of the spring, and the restricting portion, A plurality of rib-shaped cylinders projecting inward from the casing Is a sheet reclining device having a concavo-convex configuration such as substantially concavo-convex, corrugated, knurled, protruding, deformed shape, etc. Accordingly, the fifth aspect of the present invention achieves the object of the first aspect and is optimal for achieving this object, and can provide various types of seats or a regulation locking portion that can smoothly cope with the return load of the seats.
[0076]
[0077]
[0078]
[0079]
[0080]
[0081]
[0082]
[0083]
[0084]
[0085]
[0086]
[0087]
[0088]
[0089]
[0090]
[0091]
[0092]
[0093]
[0094]
[0095]
[0096]
[0097]
[0098]
[0099]
[0100]
[0101]
[Brief description of the drawings]
FIG. 1 is a schematic scale diagram of an embodiment in which the present invention is applied to a seat reclining device.
FIGS. 2A and 2B are schematic views of an embodiment in which the present invention is applied to a tumble mechanism of a sheet. FIG. 2A shows a standing state, and FIGS. 2B and 2C show folded states.
FIGS. 3A and 3B are schematic views of an embodiment in which the examples of FIGS. 1 and 2 are merged. FIG. 3A shows a standing state, and FIGS. 3B and 3C show folded states.
FIG. 4 is a rear view of a casing body showing an embodiment of the present invention.
FIG. 5 is a front view of FIG.
FIGS. 6A to 6D show combinations of a cylindrical portion and a spring. FIGS. 6A and 6B are side views of an example in which the cylindrical portion and the spring have a flat configuration. FIGS. (B) is a side view of a partially cut-out part in which the cylindrical part has a flat configuration and the spring has a concave and convex configuration, (b ') is a plan view thereof, and (c) has a cylindrical part and has a concave and convex configuration. Is a side view with a flat configuration, (C ') is a plan view thereof, (D) is a side view of a partial defect in which both have a concave-convex configuration, and (D') is a plan view thereof.
FIGS. 7A to 7B show respective combinations of a cylindrical sphere and a spring, and FIG. 7A is a side view of an example in which the sphere and the spring have a flat configuration. ) Is a plan view thereof, (B) is a side view of a partially-missed sphere having a flat configuration, and a spring having an uneven configuration, and (B ') is a plan view thereof.
FIGS. 8A to 8D show combinations of a sphere receiving piece for receiving a cylindrical sphere and a spring, and FIG. 8A shows a flat sphere and spring provided on the sphere receiving piece. The side view of the example which consists of composition, (I ') is the top view, (B) is the side view of the partial notches where the sphere provided on the sphere receiving piece has a flat configuration and the spring has an uneven configuration, ) Is a plan view thereof, (c) is a side view of a sphere and a spring provided on another sphere receiving piece in a flat configuration, (c) is a plan view thereof, and (d) is provided on another sphere receiving piece. Side view of a partially cutout with a sphere having a flat configuration and a spring having an uneven configuration, (d ') is a plan view thereof
FIGS. 9A to 9B show combinations of a sphere receiving piece and a spring that receive a cylindrical sphere, and FIG. 9A shows a combination of a sphere and a spring provided on another sphere receiving piece. (B) is a plan view of the spheres provided on the other sphere receiving pieces, and (b) is a side view of a partially-missed part in which the spring has a concavo-convex configuration. ') Is the top view
FIGS. 10A to 10D show combinations of bushes and springs provided in the cylindrical portion, and FIGS. 10A and 10B are side views of an example in which the bushes and springs have a flat configuration. (B) is a plan view, (b) is a side view of a partially cutout with a bush having a flat configuration, and a spring has a concavo-convex configuration, (b) is a plan view thereof, and (c) is a concavo-convex configuration of a bush. , A side view of the spring in a flat configuration, (c ′) is a plan view of the spring, (d) is a side view of a partially broken part in which both are in a concavo-convex configuration, and (d ′) is a plan view of the spring
FIGS. 11A to 11D show combinations of other bushes and springs provided in the cylindrical portion, and FIG. 11A shows an example in which the other bushes and springs have a flat configuration. Side view, (b ') is a plan view thereof, (b) is a side view of a partially cutout with a bush having a flat configuration, and a spring having an uneven configuration, (b') is a plan view thereof, and (c) is a bush. Is a side view with a rugged configuration and a spring with a flat configuration, (C ') is a plan view thereof, (D) is a side view of a partially broken surface with both rugged configurations, and (D') is a plan view thereof.
FIG. 12 is a cross-sectional view illustrating peripheral portions such as a casing main body and a casing lid.
FIGS. 13A to 13C show combinations of a sphere receiving piece and a spring that receive a cylindrical sphere, and FIG. 13A shows an uneven structure of the sphere and the spring provided on the sphere receiving piece. (B) and (C) are side views showing the movable state, and (C ') is a plan view thereof.
FIGS. 14A and 14B show combinations of a sphere receiving piece that receives a cylindrical sphere and a spring, and FIG. 14A shows a combination of a sphere and a spring provided on the sphere receiving piece. Side view, (B) is a side view showing the movable state
FIGS. 15A and 15B show combinations of a sphere receiving piece for receiving a cylindrical sphere and a spring, and FIG. 15A shows a sphere and spring provided on the sphere receiving piece having an uneven structure. Side view, (B) is a side view showing the movable state
FIGS. 16A to 16C show combinations of a sphere receiving piece and a spring that receive the cylindrical sphere, and FIG. 16A shows a flat configuration of the sphere and the spring provided on the sphere receiving piece. (B) and (C) are side views showing the movable state, and (C ') is a plan view thereof.
FIGS. 17A and 17B show combinations of a sphere receiving piece for receiving a cylindrical sphere and a spring, and FIG. 17A shows a combination of a sphere and a spring provided on the sphere receiving piece. Side view, (B) is a side view showing the movable state
FIGS. 18A and 18B show combinations of a sphere receiving piece for receiving a cylindrical sphere and a spring, and FIG. 18A shows a flat structure of a sphere and a spring provided on the sphere receiving piece. Side view, (B) is a side view showing the movable state
FIG. 19 is a chart for explaining various combinations of the regulation locking portion and the regulation portion, and explaining various vehicle types, seat configurations, and situations that can be used for various uses of seats.
[Explanation of symbols]
A sheet
A1 seat cushion
A2 seat back
B Lock mechanism
B1 Reclining case
C rail
D Tumble mechanism
1 Casing body
1a Casing lid
1b
100a Annular part
100b inner surface
100b-1 concave
2 Fixing member
200 legs
3 Spring
3a Locking end
300 Outer surface
4 rooms
400 Spring mounting part
5 groove
6 Guide pieces
7 cylinder
700 Top surface
8 Regulatory Department
8-1 Sphere
8-1a Sphere receiving piece
8-1b Leg
8-1c Bush
8-2 Locking piece
8-3 Elastic body
8-4 Axis
800 flat
800a uneven
9 Restriction locking part
900 flat
900a uneven
900b Flat surface part
10 Operation handle
100 operation
101 Operation arm
11 Connecting pin
12 Operation axis
13 Seat belt

Claims

An operation shaft that controls the movement of the seat, a reclining mechanism that controls the movement of the operation shaft, a lock mechanism that controls locking and unlocking of the reclining mechanism, a casing fixed to the locking mechanism, and a spring provided on the casing A spring for locking one end of the mounting portion, a groove provided in the casing into which the locking end of the spring is inserted , operating means provided in the casing for operating the spring, and an outer peripheral surface of the spring and restricting engagement portions, in contact with the regulating engaging portion, a seat reclining device configured with a regulating portion for regulating the movable of the spring,
The restricting portion is composed of several cylindrical portions provided with guide pieces provided on the casing, and spheres, bushes and the like provided on the several cylindrical portions, and uses the frictional resistance between the restricting portions and the springs. The seat reclining device is configured to restrict the movement of the spring in multiple stages.

The regulation locking portion according to claim 1 is a flat configuration formed on an outer peripheral surface of the spring, and the regulation portion is provided on the upper surface of a plurality of rib-shaped cylindrical portions protruding inward of the casing . A flat seat reclining device.

The restriction locking portion according to claim 1 is configured to have an uneven structure such as a substantially uneven shape, a corrugated shape, a knurled shape, a protruding shape, a deformed shape, and the like provided in a substantially central portion in the longitudinal direction of the outer peripheral surface of the spring. A seat reclining device having a flat structure provided on the upper surfaces of a plurality of rib-shaped cylindrical portions protruding inward of the casing .

The regulation locking portion according to claim 1 is a flat configuration formed on an outer peripheral surface of the spring, and the regulation portion is provided on the upper surface of a plurality of rib-shaped cylindrical portions protruding inward of the casing . A seat reclining device having a concavo-convex configuration such as substantially concavo-convex, corrugated, knurled, ridged, deformed shape, etc.

The restriction locking portion according to claim 1 is configured to have an uneven structure such as a substantially uneven shape, a corrugated shape, a knurled shape, a ridge shape, a deformed shape, and the like formed on an outer peripheral surface of the spring, and the restricting portion is formed inward of the casing. A seat reclining device having a concavo-convex configuration such as substantially concavo-convex, corrugated, knurled, protruding, deformed shape provided on the upper surface of a plurality of protruding rib-shaped cylindrical portions .