JP2004352125A

JP2004352125A - Opening operation device for closing member

Info

Publication number: JP2004352125A
Application number: JP2003153651A
Authority: JP
Inventors: Ryoichi Fukumoto; 良一福元; Akira Matsuhashi; 明松橋; Masumi Nishikawa; 増美西川
Original assignee: Aisin Seiki Co Ltd
Current assignee: Aisin Corp
Priority date: 2003-05-30
Filing date: 2003-05-30
Publication date: 2004-12-16
Anticipated expiration: 2023-05-30
Also published as: JP4221657B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening operation device by which an energy generated by a driving means is hard to lose in the opening operation device for the closing member which switches the closing member for closing a space in a vehicle from a closed position to an opened position. <P>SOLUTION: This opening operation device for the closing member is equipped with a base member, a link having a section to be operated which is pivoted by a connecting pin moving in a slot 9 of the base member, and an operating section which is pivoted by the closing member, a driving means which moves the connecting pin in the slot, and a holding member 40 which temporarily fixes the connecting pin at a temporary fixing position in the slot corresponding to the closed position. The holding member is equipped with one end 40a which is attached to the base member side, and the other end 40b which is fitted and fixed on/to the connecting pin. The inner dimension (m) in the longitudinal direction of the slot 9 of an opening which is provided on the other end of the holding member to be fitted on the connecting pin is equal to the outer diameter of the connecting pin, and the inner dimension (n) of the opening, which is orthogonal to the longitudinal direction of the slot, is set to exceed the outer diameter of the connecting pin by a specified amount for the constitution. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、車両に設けられた空間を閉鎖可能な閉鎖部材を、前記空間を閉鎖した閉鎖位置から、前記閉鎖位置に対して前記車両から離間した開放位置に切り替えるための閉鎖部材の開放操作装置に関する。
【０００２】
【従来の技術】
この種の閉鎖部材の開放操作装置を記した例としては、本発明に関連する先行技術文献情報として下記に示す特許文献１がある。
この特許文献１に記された車両用フード装置（本願による閉鎖部材の開放操作装置に該当する装置）では、直線状の軸芯に沿って操作される駆動部を有する駆動手段としてガスゼネレータ式のアクチュエータが設けてある。また、車両側に中間部で枢支された長手のリンクが設けられており、このリンクの中間部から離間した一端がフードに枢支連結され、中間部を挟んで位置する他端は、アクチュエータの作動部とワイヤで連結されている。そして、装置をコンパクトにするために、アクチュエータの軸芯は常態のリンクの下方に比較的大きな距離を隔てて平行に配置されているので、ワイヤは、ほぼ水平方向を向いた作動部の引っ張り力を、リンクの他端を斜め下方に引く力に変換するためにリンクの他端とアクチュエータの作動部との間に配置されたワイヤガイドの周面にて折り曲げられている。尚、通常時にリンクを車体側に固定しておくためのロック手段（保持部材）として、リンクの他端に設けられたヒンジピンが嵌合可能なピン嵌合溝が車両側に配置されている。ガス発生によってアクチュエータの作動部が移動すると、ワイヤがワイヤガイドの周面で擦られながら急激に引っ張られて、ヒンジピンがピン嵌合溝から抜け出して、リンクの立ち上がりが可能になり、フードが開放位置に切り換えられる。
【０００３】
また、ロック手段（保持部材）の第１の変形例として、リンクの他端付近から前後に一体的に延びた帯状の固定片の端部を車両側にボルト締めし、この端部に近接した部位を易破断部として幅狭に形成した構成が記されている。ガス発生によってアクチュエータの作動部が移動すると、ワイヤが急激に引っ張られて、固定片が易破断部で破断されてロック解除され、リンクが立ち上がってフードが開放位置に切り換えられる。
さらに、ロック手段（保持部材）の第２の変形例として、リンクの他端付近から一体的に前後に延びた帯状の固定片の端部を、前後に延びたスリット部を挟んだ二股状部が形成されるように加工し、スリット部に挿通されたボルトによって二股状部を車両側に締め付けた構成が記されている。ガス発生によってアクチュエータの作動部が移動すると、ワイヤが急激に引っ張られて、二股状部がボルトのヘッドと車両側の間から抜け出してロック解除され、リンクが立ち上がってフードが開放位置に切り換えられる。
【０００４】
【特許文献１】
特開２０００−２０３３７７号公報（段落番号００２５〜００２７、００４３〜００４４、図３、図６、図７）
【０００５】
【発明が解決しようとする課題】
特許文献１の装置では、アクチュエータの軸芯は常態のリンクの下方に比較的大きな距離を隔てて配置されているので、アクチュエータから発生したエネルギーが、リンクの他端を引き操作するまでに（ワイヤガイドとの摩擦などに基づいて）無駄に失われ易く、結果的に、アクチュエータに本来必要以上に大きなキャパシティが要求されるという問題があった。
【０００６】
したがって、本発明の目的は、上に例示した従来技術による閉鎖部材の開放操作装置の持つ前述した欠点に鑑み、アクチュエータなどの駆動手段から発生したエネルギーがリンクの被操作部に伝えられるまでにロスされ難い閉鎖部材の開放操作装置を提供することにある。
【０００７】
【課題を解決するための手段】
上記目的を達成するために、本発明に係る閉鎖部材の開放操作装置は、特許請求の範囲の請求項１から４のいずれかに記された特徴構成を備えている。
すなわち、本発明の特許請求の範囲の請求項１による閉鎖部材の開放操作装置は、
車両に設けられた空間を閉鎖可能な閉鎖部材を、前記空間を閉鎖した閉鎖位置から、前記閉鎖位置に対して前記車両から離間した開放位置に切り替えるための閉鎖部材の開放操作装置であって、
前記車両に設けられたベース部材、前記ベース部材に形成された長孔内を移動する連結ピンに枢支された被操作部と前記閉鎖部材に枢支された操作部とを有するリンク、前記連結ピンを前記長孔内にて移動操作する駆動手段、及び、前記連結ピンを前記閉鎖部材の前記閉鎖位置に対応した前記長孔内の仮止め位置に仮止めする保持部材を備え、且つ、前記保持部材は、前記ベース部材側に取り付けられた一端と、前記連結ピンに外嵌される他端とを備え、
前記連結ピンに外嵌されるべく前記保持部材の前記他端に設けた開口部の、前記長孔の長手方向に沿った向きの内寸は前記連結ピンの外径に等しく（実質的にガタツキを生じない寸法差しかないことを意味する）、前記開口部の前記長孔の長手方向と直交する向きの内寸は前記連結ピンの外径を所定量超えるように設定されていることを特徴構成としている。
【０００８】
このような特徴構成を備えているために、本発明の請求項１による閉鎖部材の開放操作装置では、
前記駆動手段から生じる駆動力によって連結ピンとリンクの被操作部とが長孔に沿ってスムースに移動操作され、この移動に応じてリンクが揺動操作されて、閉鎖部材を開放操作する。従って、駆動手段から発生したエネルギーが、閉鎖部材を開放操作する操作力としてリンクの被操作部に伝えられるまでにロスされ難い。また、保持部材によって閉鎖部材を閉鎖位置（常態）に保持することができる。
さらに、保持部材の他端の、長孔の長手方向に沿った向きの内寸は連結ピンの外径に等しく、長孔の長手方向と直交する向きの内寸は連結ピンの外径を十分に超えるように設定されているので、連結ピンの長孔に沿ったガタツキ、言い換えれば、閉鎖部材の開放位置向きへのガタツキを十分に抑制しながらも、組み付け工程が楽な、或いは、保持部材の一端側の設置位置精度がそれほど要求されない、作製の容易な開放操作装置が得られる。
【０００９】
特に、前記長手方向と直交する向きの前記長孔の内寸は、前記仮止め位置において前記連結ピンの外径に等しく（実質的にガタツキを生じない寸法差しかないことを意味する）、前記駆動手段によって前記連結ピンが送り出される、前記長孔の前記仮止め位置とは異なる被摺動領域において前記連結ピンの外径を所定量超えるように設定されている構成することができる。
このように構成すれば、連結ピンが仮止め位置にある時におけるリンクの被操作部の、長手方向と直交する方向のガタツキも十分に抑制され、同時に、閉鎖部材を開放位置に切り替えるために仮止め位置から離れた後の連結ピンの長孔内（被摺動領域）での円滑な移動が確保される。
【００１０】
さらに、前記連結ピンは前記長孔内を摺動移動可能な摺動部を有し、前記摺動部の一方の側面には前記保持部材の前記他端を押付け固定するための被押付け端面が設けられ、前記摺動部の他方の側面には前記ベース部材の前記長孔の周縁部と対向する大径部が設けられており、前記摺動部は前記長孔の前記被摺動領域を超える厚さを備え、且つ、前記保持部材の前記他端と前記ベース部材の間に所定寸法のクリアランスが形成されるように、前記ベース部材の前記保持部材の前記一端を取り付けるための固定箇所は、前記被摺動領域を設けた箇所に対して、前記連結ピンの前記大径部から前記被押付け端面に向かって変位形成されており、前記駆動手段は前記保持部材を前記一端と前記他端の間で破断した後に、前記連結ピンと前記リンクの被操作部とを前記長孔に沿って移動させるように構成することができる。
このように構成すれば、摺動部に被摺動領域を超える厚さを与えることで、保持部材が破断された後には連結ピンが長孔内を円滑に移動することを可能にしながらも、連結ピンが仮止め位置にある時には保持部材の持つ剛性に基づいて（具体的には保持部材の剛性で連結ピンの大径部の端面がベース部材に軽く押付けられた常態で維持される）、連結ピンやリンクの被操作部のベース部材等に対するガタツキ（特に連結ピン自身の軸芯に沿った移動に基づくガタツキ）を抑制できる。
【００１１】
特に、前記閉鎖部材は車両の空間を閉鎖した閉鎖位置と、その少なくとも一部が上方に移動した開放位置との間で切り換え可能に設けられたフードであり、前記駆動手段は、前記保持部材による前記仮止めを解除した後に前記リンクの前記被操作部を前記長孔に沿って移動させることで、前記リンクによって前記フードを上方に持ち上げる構成とすることができる。
このように構成すれば、車両が路上対象物と接触することに基づいて、フードをエンジン上部とフード下面の間に十分な空間が形成される位置まで持ち上げ、しかも、通常はフードのガタツキが抑制されたリフトアップ装置として、本発明の開閉操作装置を用いることができる。
【００１２】
本発明によるその他の特徴および利点は、以下図面を用いた実施形態の説明により明らかになるであろう。
【００１３】
【発明の実施の形態】
本発明の実施形態の一例について図面に基づいて解説する。
図１は、本発明によるリフトアップ装置１００（開閉操作装置の一例）を備えた車両のフロント部を示す。フロント部１には、エンジン２などを収納するエンジンルーム３が設けられており、エンジンルーム３の上面はフード４（閉鎖部材の一例）によって覆われている。そして、エンジンルーム３の後端の上縁部付近に左右一対のリフトアップ装置１００が配置されている。
図２に示すように、フード４の後端左右の下面には、一対のフードヒンジ部材４ａが固定されており、フード４は、このフードヒンジ部材４ａに設けられた横向き軸芯Ｘ１を介して、リフトアップ装置１００の一部に回動自在に枢支されている。通常のエンジンルーム３の点検時など（リフトアップ装置１００は常態にある）には、フード４はこの後端の横向き軸芯Ｘ１回りでの揺動を伴って開閉操作される。
【００１４】
エンジンルーム３の前端には、フード４の下面に立設された例えばストライカ状の被ロック部材５ａと、この被ロック部材５ａを係止するためにエンジンルーム３の側に配置されたラッチ５ｂなどからなるロック機構５が設けられている。
尚、車両のバンパー部には、歩行者などの路上対象物との万一の接触を検知するセンサ５０が配置されており、また車両には、センサ５０による路上対象物との接触を示す検出信号を受けてリフトアップ装置１００を作動させる制御装置（車載されたＥＣＵ内のＣＰＵなどで構成されている）が設けられている。そこで、必要な時にフード４を上方に跳ね上げるリフトアップ機構は、センサ５０と前記制御装置とリフトアップ装置１００とによって構成されていることになる。リフトアップ装置１００の常態においてフード４は、エンジンルーム３の上面を覆う「閉鎖位置」にあり、センサ５０から出される検出信号に応じてリフトアップ装置１００が作動する時は、フード４の前端部がロック機構５によって車体側に係止された状態を維持したまま、主にフード４の後端部が「開放位置」に跳ね上げられる。
【００１５】
リフトアップ装置１００は、図４に示すように、車体側に固定されたベース部材６と、ベース部材６に支持されたリンク機構２０と、前記制御装置からの指令に応じてリンク機構２０を作動させるためにベース部材６に固定されたアクチュエータ３０（駆動手段の一例）とを有する。リンク機構２０の前方の先端にはフード４の下面に取り付けられたフードヒンジ部材４ａが枢支連結されている。
ベース部材６は、図５と図６から理解されるように、前後に長く延びた概して板状の第１取り付け部７ａと、第１取り付け部７ａからクランク状にステップアップして設けられた第２取り付け部７ｂと、第１取り付け部７の長手方向の一辺から上方に延びたフランジ部８とからなり、フランジ部８には、フランジ部８の前後方向に関する中央付近で取り付け部７とほぼ平行に延びた長孔状の第１貫通孔９（長孔の一例）と、第１貫通孔９よりも後方に位置する円形の第２貫通孔１０（貫通孔の一例）とが形成されている。第１取り付け部７ａと第２取り付け部７ｂの数箇所には、ベース部材６をボルトその他の締結手段で車体に固定するための幾つかの貫通孔７ｈが形成されている。
【００１６】
リンク機構２０は、図４に示すように、長尺の主リンク２１（リンクの一例）と、比較的短い補助リンク２２とからなる。
主リンク２１の前端２１ａ（被操作部の一例）は、ベース部材６の第１貫通孔９内を摺動移動するローラピン２４（連結ピンの一例）に外嵌支持されており、一方、主リンク２１の後端２１ｃ（操作部の一例）は、フード４のフードヒンジ部材４ａに前述の軸芯Ｘ１にて連結ピン１２ａで枢支されている。また、主リンク２１は、リフトアップ装置１００の常態において、前端２１ａから所定の角度（例えば３０°から３５°の範囲内）で斜め上方に直線状に延びた比較的短い（補助リンク２２と実質的に同じ長さ）前方部２１Ｆと、前方部２１Ｆの後端からほぼ水平に近い斜め上方の向き（例えば１°から１０°の範囲内）に直線状に延びた中間部２１Ｍと、中間部２１Ｍの後端から次第に上向き角度が大きくなる曲線を描いて比較的急激に上方に延びた後方部２１Ｒとを有する。
次に、補助リンク２２の前端２２ａは、主リンク２１の前方部２１Ｆと中間部２１Ｍとの境界部位に連結ピン１２ｂで枢支されている。また、補助リンク２２の後端２２ｂはベース部材６の第２貫通孔１０に連結ピン１２ｃで枢支されている。尚、ベース部材６の第２貫通孔１０は第１貫通孔９の長手方向軸芯の延長線上に配置されている。
【００１７】
尚、図７に示されるように、ローラピン２４には、ヘッド部２４ａ、ヘッド部２４ａから延在する比較的細いネック部２４ｂ、ネック部２４ｂから延在する最も大径の大径部２４ｃ、大径部２４ｃから延在する中位の径の摺動部２４ｄ、及び、摺動部２４ｄから延在する比較的細い雄ネジ部２４ｅが一体形成されている。雄ネジ部２４ｅはネック部２４ｂと同一の外径を有し、摺動部２４ｄは大径部２４ｃとネック部２４ｂの中間的な外径を有する。リンク機構２０の組立て前には、図１１に示すように、ネック部２４ｂは一貫して雄ネジ部２４ｅと同じ外径の円柱状を呈し、大径のヘッド部２４ａは見られない。図１１に示すように、リンク機構２０の組立て時に、ヘッド部２４ａに対して先ず主リンク２１の前端２１ａが外嵌され、次に大径部２４ｃと同一外径の円筒状の小ディスク２５がスペーサ状に外嵌され、両部材の抜止めとしてネック部２４ｂの先端が「かしめ」加工により押し潰されて、大径のヘッド部２４ａが形成される。
大径部２４ｃは第１貫通孔９（後述する大半部９ａ）の幅を十分に超える外径を有する。そして、主リンク２１の前方部２１Ｆを間に挟んだ状態で配置されている大径部２４ｃと小ディスク２５との各周面が、下記のアクチュエータ３０からの出力を直接受ける２つの被操作部として働く。また、ローラピン２４は、摺動部２４ｄがベース部材６の第１貫通孔９内を摺動移動するように係入され、大径部２４ｃの一方の端面の一部がベース部材６の第１貫通孔９周縁部に対向するように、雄ネジ部２４ｅから第１貫通孔９内に挿通され、雄ネジ部２４ｅにスプリングワッシャ２６を介して後述するナット２７を螺着することで、ベース部材６に取り付けられる。
【００１８】
アクチュエータ３０は、ここではガスジェネレータ式のものを用いており、ベース部材６の第２取り付け部７ｂに固定されたシリンダ状の本体部３０ａと、本体部３０ａ内に設けたイグナイタによる点火で発生するガスの圧力に基づいて本体部３０ａからアクチュエータ３０の軸芯Ｙに沿って直線状に突出作動可能なピストン状の駆動部３０ｂとを備えている。駆動部３０ｂの移動軌跡（軸芯Ｙと一致する）は、ベース部材６の長孔状の第１貫通孔９と平行に延びており、特に、側面視では互いにほぼ完全に重なり合った位置にあり、平面視においても、極めて近接して位置している。
駆動部３０ｂには、側面視で互いに間隔（主リンク２１の厚さとほぼ一致する間隔である）を空けて重なり合っている２対の板状の操作片３１が枢支連結されており、操作片３１の後端には、ローラピン２４の２つの被操作部２４ｃ，２５を受け入れる半円形の凹部３１ａが形成されている。
【００１９】
アクチュエータ３０が作動すると、アクチュエータ３０の駆動部３０ｂは左右一対の操作片３１を介して、操作片３１の半円形の凹部３１ａに係入されるローラピン２４の大径部２４ｃと小ディスク２５、及び、大径部２４ｃと小ディスク２５との間に位置する主リンク２１の前端２１ａを後方に押し出す。このように、アクチュエータ３０の駆動部３０ｂに左右一対の操作片３１を設け、主リンク２１の前端２１ａの左右両側に操作片３１を受ける２つの被操作部２４ｃ，２５を設けることで、主リンク２１の前端２１ａを押し出す駆動力が主リンク２１に対する「片持ち」状になることが抑制されている。
補助リンク２２は、（アクチュエータ３０の作動による）ローラピン２４と主リンク２１の前端２１ａ（被操作部）の後方への移動に基づく、主リンク２１の後端２１ｃ（操作部）の移動軌跡を特定することによって、アクチュエータ３０の作動に基づく主リンク２１の後端２１ｃの後方移動によってフード４自身が後方に移動することを防止するために設けられている。これによって、フードの「開放位置」への上昇が確実に行われると同時に、エンジンルーム３の前端に設けられたロック機構５（フード４側の被ロック部材５ａとエンジンルーム３側のラッチ５ｂとからなる）に過剰な負荷が掛けられずに済む。
フード４の「閉鎖位置」において、主リンク２１の前方部２１Ｆは、主リンク２１の前端２１ａ（被操作部）からアクチュエータ３０の軸芯Ｙに対して斜め上方に配置されているので、アクチュエータ３０の操作片３１が後方に押し出されると、主リンク２１はアクチュエータ３０の軸芯Ｙに対する傾斜角度を増す方向に立ち上がって行き、フード４を図３と図５に示す「開放位置」まで上昇させる。
【００２０】
言い換えれば、主リンク２１の前端２１ａ（被操作部）がアクチュエータ３０の駆動部３０ｂから受ける操作力の、軸芯Ｙと平行で主リンク２１の前端２１ａから後端２１ｃ（操作部）側を向いた成分は、フード４の「閉鎖位置」において最大であり、フード４の「開放位置」への切り換えに応じて、前記成分は次第に減少し、同時に、主リンク２１の前記中間連結部は軸芯Ｙから遠ざかるように構成されている。
また、アクチュエータ３０には、駆動部３０ｂをシリンダ状の本体部３０ａから最大量で突出した状態でロックするための機械的なロック機構（不図示）が設けられている。この駆動部３０ｂがロックされた状態において、ローラピン２４は駆動部３０ｂの半円形の凹部３１ａと第１貫通孔９の後端との間に係止されるように貫通孔９の長さが決められているので、この駆動部３０ｂのロック状態においてローラピン２４が駆動部３０ｂの半円形の凹部３１ａから大きく離間しない。従って、フード４の「上昇位置」は、第１貫通孔９の後端によって一定に定められる。
尚、リンク機構２０を駆動操作するアクチュエータとしては、上記の形式のものに限らず、例えば電気エネルギー、磁気エネルギーや圧縮空気など他の動作原理に基づくものを用いても良い。
【００２１】
リフトアップ装置１００には、フード４を前記常態に仮止めする保持プレート４０（保持部材の一例）が設けられている。図９から図１１に示すように、保持プレート４０はステンレス鋼等の金属製の平面状を呈した板状部材であり、矩形の第１端４０ａと、環状の第２端４０ｂとを備え、第１端４０ａと第２端４０ｂとは、第１端４０ａに比して十分に小さな（数分の一など）断面積を備えた細い易破断部４０ｐによって一体的に連結されている。矩形の第１端４０ａは溶接や接着によってベース部材６のフランジ部８に固定される平坦な面を備えている。また、図７と図８に示すように、環状の第２端４０ｂは、ローラピン２４の雄ネジ部２４ｅに外嵌され、スプリングワッシャ２６とナット２７によって、ローラピン２４の摺動部２４ｄの端面に押付け固定されている。
尚、ローラピン２４の摺動部２４ｄは、ベース部材６の第１貫通孔９の周縁部よりも僅かに厚く形成されているので、保持プレート４０の環状の第２端４０ｂとベース部材６との間には僅かなクリアランスｈ（１ｍｍ未満）が設けられ、これによって、保持プレート４０が破断された後の摺動部２４ｄの長孔９内での自由な摺動性を確保している。
【００２２】
さらに、図７に示すように、ベース部材６のフランジ部８のうち保持プレート４０の第１端４０ａが固定される前端付近の部位は、板金プレス加工などで、長孔９を備えた隣接部位に対して内側（ローラピン２４の雄ネジ部２４ｅが配置される側）に僅かに変位配置され（変位量は前記クリアランスｈとほぼ同一の１ｍｍ未満）、フランジ部８が全体として平面視でクランク状を呈している。その結果、リフトアップ装置１００の常態においては、平面状の保持プレート４０の少なくとも環状の第２端４０ｂは、ベース部材６の面（長孔９の周縁部位に相当する）から僅かながら離間した状態で配置される。すなわち、前記クリアランスｈに基づいて、保持プレート４０が破断後の摺動部２４ｄの長孔９内での自由な摺動性を確保しながらも、同時に、ローラピン２４の大径部２４ｃが、保持プレート４０（特に保持プレート４０の易破断部４０ｐ）の有する剛性に基づいてフランジ部８の外側面に押付けられることで、ローラピン２４及び主リンク２１の前端２１ａの左右方向（図６の軸芯Ｙと直交する方向）に関するガタツキが合理的に抑制されている。
保持プレート４０は易破断部４０ｐがアクチュエータ３０の軸芯Ｙにほぼ沿った状態に設けられているので、アクチュエータ３０が駆動力を発生すると、保持部材４０は実質的に引っ張り力のみによって（曲げ応力の成分を実質的に含むことなく）易破断部４０ｐで破断され、図９（ロ）の矢印に示すように、第１端４０ａと第２端４０ｂとはアクチュエータ３０の軸芯Ｙに沿って分離される。その結果、フード４は、常態としての閉鎖位置（図２と図４の状態）から、フード４の後端が前記閉鎖位置より所定量（例えば５ｃｍから１０ｃｍなど）持ち上げられた開放位置（図３と図５の状態）に切り換えられ、フード４の下面とエンジンの間に上下方向の空間が確保される。
【００２３】
さらに具体的には、図１０と図１１に示すように、保持部材４０の環状の第２端４０ｂを構成する孔は、前後方向に比して上下方向（アクチュエータ３０の軸芯Ｙとほぼ直交する方向）に長い長円形、乃至は矩形を呈しており、第２端４０ｂの孔の前後方向の内径寸法「ｍ」はローラピン２４の雄ネジ部２４ｅ（円形断面）の外径とほぼ同一（実質的にガタツキの無い寸法差）であり、他方、第２端４０ｂの孔の上下方向の内径「ｎ」は、雄ネジ部２４ｅ（円形断面）の外径より余裕を持って大きめ（例えば上下の各々に約１ｍｍのクリアランスがある）に設定されている。また、図９から図１１に示すように、長孔９は、その前方側にはローラピン２４の保持部として作用するために上下の開口幅が小さい端部９ｂ（仮止め位置の一例）を有し、端部９ｂより後方側（図９に示す右側）には、端部９ｂから連続的に延設された上下幅の大きな被摺動部９ａを有している。被摺動部９ａの開口幅の寸法「ｊ」はローラピン２４の摺動部２４ｄ（円形断面）の外径より余裕を持って大きめ（例えば上下の各々に約０．５ｍｍのクリアランスがある）であるが、長孔９の端部９ｂにおける開口幅の寸法「ｋ」は摺動部２４ｄ（円形断面）の外径とほぼ同一（実質的にガタツキの無い寸法差）に設定されている。
従って、フード４が常態（閉鎖位置）にある時には、図９（イ）に示すように、ローラピン２４及び主リンク２１の前端２１ａの前後方向でのガタツキは、保持部材４０の環状の第２端４０ｂとローラピン２４の雄ネジ部２４ｅとの間の前後方向での拘束によって抑制され、また、ローラピン２４は長孔９の前方側の端部９ｂに位置するので、同上部材の上下方向でのガタツキは、ベース部材６の長孔９の端部９ｂとローラピン２４の摺動部２４ｄの間の上下方向での拘束によって抑制される。ローラピン２４及び主リンク２１の前端２１ａの前後方向でのガタツキを抑制することは、フード４の後端部の上下方向の振動を防止することを意味する。ローラピン２４及び主リンク２１の前端２１ａの上下方向でのガタツキを抑制することは、主リンク２１の前端２１ａ、ローラピン２４、アクチュエータ３０の操作片３１等の上下方向の振動を防止することを意味する。
また、第２端４０ｂの孔の上下方向の内径「ｎ」は、雄ネジ部２４ｅの外径より余裕を持って大きめに設定されているので、組立て作業が容易にできる、或いは、保持部材４０を固定する位置に求められる精度が比較的低くて済む。さらに、長孔９は、その全長の大半部９ａにおける幅寸法「ｊ」はローラピン２４の摺動部２４ｄの外径より余裕を持って大きめに形成されているので、アクチュエータ３０が駆動力を発生直後にローラピン２４は十分に大きな幅「ｊ」を備えた長孔９の大半部９ａに進入し、円滑に摺動操作される。
【００２４】
〔別実施形態〕
＜１＞保持プレートの車両側に固定すべき一端とローラピンに連結すべき他端との間に細い易破断部を設けず、その代わりに、ローラピンに連結すべき他端を完全に閉じた環状ではなく、ローラピンに外嵌された環の周上の一部が欠け、上方の半環状部の端面と下方の半環状部の端面とが上下に向き合う不完全環状とし、アクチュエータ４０などの駆動に基づいて、これら上下の端面どうしが上下に離間変形して、ローラピンの後方への抜け出しを許す構成としても良い。
【００２５】
＜２＞ガスジェネレータ式のアクチュエータ４０の代わりに、他の駆動手段を用いても良い。他の駆動手段の例としては、コンプレッサーで発生させた圧縮空気に基づくシリンダ方式、圧縮バネ式、油圧式などが考えられる。これらの駆動手段もベース部材６に固定されることが望まれるが、必ずしもこの構成に限られず、リンク機構のみがベース部材６に設けられ、駆動手段は車両の任意の部位に固定されても良い。
【図面の簡単な説明】
【図１】車両のフロント部を示す斜視図
【図２】フードが閉鎖位置にある時の車両のフロント部を示す側面図
【図３】フードが開放位置にある時の車両のフロント部を示す側面図
【図４】フードが閉鎖位置にある時のリフトアップ装置を示す側面図
【図５】フードが開放位置にある時のリフトアップ装置を示す側面図
【図６】リフトアップ装置（フードは閉鎖位置にある）を示す平面図
【図７】図４のリフトアップ装置の一部を示す平面図
【図８】図４のリフトアップ装置の一部を示す正面図
【図９】図４のリフトアップ装置の保持プレートの作用を示す側面図
【図１０】図９の保持プレートを拡大して示す側面図
【図１１】図４のリフトアップ装置の一部を示す分解斜視図
【符号の説明】
１フロント部
２エンジン
３エンジンルーム
４フード
５ロック機構
５０センサ
１００リフトアップ装置
３０アクチュエータ（駆動手段）
６ベース部材
８フランジ部
９長孔
１０第２貫通孔
２０リンク機構
２１主リンク
２１ａ被操作部
２１ｂ中間連結部
２１ｃ操作部
２２補助リンク
４０保持プレート（保持部材）
４０ａ第１端
４０ｂ第２端
４０ｐ易破断部
ｍ保持プレートの第２端４０ｂの孔の前後方向の内径
ｎ保持プレートの第２端４０ｂの孔の上下方向の内径
ｋ長孔９の前方側の端部９ｂにおける幅
ｊ長孔９の大半部９ａにおける幅[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a closing member opening operation device for switching a closing member capable of closing a space provided in a vehicle from a closed position where the space is closed to an opening position separated from the vehicle with respect to the closed position. About.
[0002]
[Prior art]
As an example in which this kind of closing member opening operation device is described, there is Patent Document 1 shown below as prior art document information related to the present invention.
In a vehicle hood device described in Patent Document 1 (a device corresponding to a closing member opening operation device according to the present application), a gas generator-type driving device having a driving portion operated along a linear axis is used. An actuator is provided. Further, a longitudinal link pivotally supported at an intermediate portion is provided on the vehicle side, and one end of the link separated from the intermediate portion is pivotally connected to a hood, and the other end located across the intermediate portion is an actuator. Is connected to the operating part by a wire. And, in order to make the device compact, the axis of the actuator is arranged in parallel under a relatively large distance below the normal link, so that the wire exerts a pulling force on the working part which is oriented substantially horizontally. Is bent at the peripheral surface of a wire guide disposed between the other end of the link and the operating portion of the actuator to convert the other end of the link into a force for pulling the link diagonally downward. As a lock means (holding member) for fixing the link to the vehicle body in a normal state, a pin fitting groove provided at the other end of the link and in which a hinge pin can be fitted is arranged on the vehicle side. When the operating part of the actuator moves due to gas generation, the wire is rapidly pulled while being rubbed on the peripheral surface of the wire guide, the hinge pin comes out of the pin fitting groove, the link can rise, and the hood is opened. Is switched to.
[0003]
Further, as a first modified example of the locking means (holding member), an end of a band-shaped fixing piece integrally extending forward and backward from near the other end of the link is bolted to the vehicle side, and the end is brought close to this end. A configuration in which the portion is formed narrow as an easily breakable portion is described. When the operating portion of the actuator moves due to gas generation, the wire is rapidly pulled, the fixing piece is broken at the easily breakable portion and unlocked, the link rises, and the hood is switched to the open position.
Further, as a second modified example of the locking means (holding member), the end of a band-shaped fixing piece integrally extending from the vicinity of the other end of the link to the front and rear is formed into a bifurcated portion sandwiching a slit extending to the front and rear. Is formed so that a forked part is formed, and the forked part is fastened to the vehicle side by a bolt inserted into the slit part. When the operating portion of the actuator moves due to gas generation, the wire is rapidly pulled, the forked portion comes out from between the head of the bolt and the vehicle side and is unlocked, the link rises, and the hood is switched to the open position.
[0004]
[Patent Document 1]
JP-A-2000-203377 (paragraph numbers 0025 to 0027, 0043 to 0044, FIGS. 3, 6, and 7)
[0005]
[Problems to be solved by the invention]
In the device disclosed in Patent Document 1, since the axis of the actuator is disposed at a relatively large distance below the link in the normal state, the energy generated from the actuator causes the energy (wire) before the other end of the link is pulled. There is a problem that the actuator is apt to be wasted and lost due to friction with the guide, and as a result, the actuator is required to have a larger capacity than originally required.
[0006]
Accordingly, in view of the above-mentioned drawbacks of the prior art closing member opening operation device illustrated in the prior art, the object of the present invention is to reduce the energy generated by the driving means such as the actuator before the energy is transmitted to the operated portion of the link. An object of the present invention is to provide a closing member opening operation device which is difficult to be operated.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a closing member opening operation device according to the present invention has the characteristic configuration described in any one of claims 1 to 4 of the claims.
That is, the opening device of the closing member according to claim 1 of the present invention includes:
A closing member opening operation device for switching a closing member capable of closing a space provided in a vehicle from a closed position in which the space is closed to an open position separated from the vehicle with respect to the closed position,
A link having a base member provided on the vehicle, an operated part pivotally supported by a connection pin moving in an elongated hole formed in the base member, and an operation part pivotally supported by the closing member; Driving means for moving a pin in the elongated hole, and a holding member for temporarily fixing the connecting pin to a temporarily fixed position in the elongated hole corresponding to the closed position of the closing member, and The holding member includes one end attached to the base member side, and the other end externally fitted to the connection pin,
The inside dimension of the opening provided at the other end of the holding member to be fitted to the connection pin in the longitudinal direction of the elongated hole is equal to the outer diameter of the connection pin (substantially rattling). And the inner dimension of the opening in the direction orthogonal to the longitudinal direction of the elongated hole is set to exceed the outer diameter of the connecting pin by a predetermined amount. And
[0008]
With such a characteristic configuration, in the opening operation device for the closing member according to claim 1 of the present invention,
The connecting pin and the operated portion of the link are smoothly moved along the long hole by the driving force generated by the driving means, and the link is rocked in accordance with this movement to open the closing member. Therefore, it is difficult for the energy generated from the driving means to be lost before being transmitted to the operated portion of the link as an operating force for opening the closing member. Further, the closing member can be held in the closed position (normal state) by the holding member.
Furthermore, the inner dimension of the other end of the holding member in the direction along the longitudinal direction of the elongated hole is equal to the outer diameter of the connecting pin, and the inner dimension in the direction orthogonal to the longitudinal direction of the elongated hole is sufficient for the outer diameter of the connecting pin. , So that the rattling along the long hole of the connecting pin, in other words, the rattling of the closing member toward the open position is sufficiently suppressed, but the assembling process is easy or the holding member An opening operation device which is easy to manufacture and does not require so much installation position accuracy at one end side.
[0009]
In particular, the inner dimension of the elongated hole in a direction orthogonal to the longitudinal direction is equal to the outer diameter of the connecting pin at the temporary fixing position (meaning that there is no dimension that does not substantially cause backlash), and The connecting pin may be sent out by the means, and the sliding hole may be configured to exceed the outer diameter of the connecting pin by a predetermined amount in a sliding area different from the temporary fixing position of the elongated hole.
With this configuration, the rattling of the operated portion of the link in the direction orthogonal to the longitudinal direction when the linking pin is at the temporary fixing position is sufficiently suppressed, and at the same time, the closing member is temporarily switched to the open position. Smooth movement within the long hole (slidable area) of the connecting pin after leaving the stop position is ensured.
[0010]
Further, the connecting pin has a sliding portion that can slide and move in the elongated hole, and a pressed end surface for pressing and fixing the other end of the holding member is provided on one side surface of the sliding portion. A large-diameter portion is provided on the other side surface of the sliding portion, the large-diameter portion facing the peripheral portion of the elongated hole of the base member, and the sliding portion extends through the sliding region of the elongated hole. A fixing portion for attaching the one end of the holding member of the base member, so that a clearance having a predetermined dimension is formed between the other end of the holding member and the base member. The connecting pin is formed so as to be displaced from the large-diameter portion of the connecting pin toward the pressed end face with respect to the location where the sliding area is provided, and the driving means moves the holding member between the one end and the other end. After breaking between the link pin and the link An operation section may be configured to move along the long hole.
With such a configuration, by providing the sliding portion with a thickness exceeding the slidable area, while the holding member is broken, the connecting pin can smoothly move in the elongated hole, When the connecting pin is in the temporary fixing position, based on the rigidity of the holding member (specifically, the rigid member of the holding member maintains the end surface of the large-diameter portion of the connecting pin lightly pressed against the base member). It is possible to suppress rattling (particularly rattling due to movement of the connecting pin itself along the axis) of the operated portion of the link or the link with respect to the base member or the like.
[0011]
In particular, the closing member is a hood provided so as to be switchable between a closed position in which the space of the vehicle is closed and an open position in which at least a part thereof has moved upward, and the driving unit includes a hood provided by the holding member. The hood can be lifted upward by the link by moving the operated portion of the link along the elongated hole after releasing the temporary fixing.
With this configuration, the hood is raised to a position where a sufficient space is formed between the upper portion of the engine and the lower surface of the hood based on the fact that the vehicle comes into contact with a road object, and the hood is usually suppressed. The opening and closing operation device of the present invention can be used as the lift-up device that has been used.
[0012]
Other features and advantages according to the present invention will become apparent from the following description of embodiments with reference to the drawings.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
An example of an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a front portion of a vehicle provided with a lift-up device 100 (an example of an opening / closing operation device) according to the present invention. An engine room 3 for housing an engine 2 and the like is provided in the front section 1, and an upper surface of the engine room 3 is covered with a hood 4 (an example of a closing member). A pair of left and right lift-up devices 100 is disposed near the upper edge of the rear end of the engine room 3.
As shown in FIG. 2, a pair of hood hinge members 4 a is fixed to the rear left and right lower surfaces of the hood 4, and the hood 4 is connected via a horizontal axis X <b> 1 provided on the hood hinge member 4 a. , Is rotatably supported by a part of the lift-up device 100. At the time of normal inspection of the engine room 3 and the like (the lift-up device 100 is in a normal state), the hood 4 is opened and closed with swinging around the rearward-side horizontal axis X1.
[0014]
At the front end of the engine room 3, for example, a striker-shaped locked member 5 a erected on the lower surface of the hood 4, and a latch 5 b disposed on the engine room 3 side to lock the locked member 5 a, etc. Is provided.
A sensor 50 for detecting an emergency contact with a road object such as a pedestrian is disposed in a bumper portion of the vehicle, and a detection device indicating the contact with the road object by the sensor 50 is provided on the vehicle. A control device (including a CPU or the like in a vehicle-mounted ECU) that operates the lift-up device 100 in response to the signal is provided. Therefore, a lift-up mechanism that raises the hood 4 upward when necessary is constituted by the sensor 50, the control device, and the lift-up device 100. In a normal state of the lift-up device 100, the hood 4 is in a “closed position” that covers the upper surface of the engine room 3, and when the lift-up device 100 operates according to a detection signal output from the sensor 50, the front end of the hood 4 Mainly, the rear end of the hood 4 is flipped up to the "open position" while maintaining the state locked by the lock mechanism 5 on the vehicle body side.
[0015]
As shown in FIG. 4, the lift-up device 100 operates the base member 6 fixed to the vehicle body, the link mechanism 20 supported by the base member 6, and the link mechanism 20 in response to a command from the control device. And an actuator 30 (an example of a driving unit) fixed to the base member 6 in order to perform the operation. A hood hinge member 4 a attached to the lower surface of the hood 4 is pivotally connected to a front end of the link mechanism 20.
As can be understood from FIGS. 5 and 6, the base member 6 has a generally plate-shaped first mounting portion 7 a extending long in the front-back direction, and a crank-shaped first mounting portion provided from the first mounting portion 7 a. 2 includes a mounting portion 7b and a flange portion 8 extending upward from one side in the longitudinal direction of the first mounting portion 7. The flange portion 8 is substantially parallel to the mounting portion 7 near the center of the flange portion 8 in the front-rear direction. A first through-hole 9 (an example of a long hole) extending in the shape of a long hole and a circular second through-hole 10 (an example of a through-hole) located behind the first through-hole 9 are formed. . Several through holes 7h for fixing the base member 6 to the vehicle body with bolts or other fastening means are formed in several places of the first mounting portion 7a and the second mounting portion 7b.
[0016]
As shown in FIG. 4, the link mechanism 20 includes a long main link 21 (an example of a link) and a relatively short auxiliary link 22.
A front end 21a (an example of an operated portion) of the main link 21 is externally fitted and supported by a roller pin 24 (an example of a connecting pin) that slides and moves in the first through hole 9 of the base member 6, while the main link is. The rear end 21c (an example of an operation unit) of the hood 21 is pivotally supported by the hood hinge member 4a of the hood 4 at the axis X1 by the connecting pin 12a. In the normal state of the lift-up device 100, the main link 21 is relatively short (substantially equal to the auxiliary link 22) linearly extending obliquely upward from the front end 21a at a predetermined angle (for example, in the range of 30 ° to 35 °). A front portion 21F, an intermediate portion 21M that extends linearly in an obliquely upward direction (for example, within a range of 1 ° to 10 °) substantially horizontal from the rear end of the front portion 21F, and an intermediate portion. And a rear portion 21R which extends relatively sharply upward from a rear end of 21M in a curve with an upward angle gradually increasing.
Next, the front end 22a of the auxiliary link 22 is pivotally supported by a connecting pin 12b at a boundary between the front portion 21F and the intermediate portion 21M of the main link 21. Further, the rear end 22b of the auxiliary link 22 is pivotally supported by the second through hole 10 of the base member 6 by a connecting pin 12c. The second through hole 10 of the base member 6 is disposed on an extension of the longitudinal axis of the first through hole 9.
[0017]
As shown in FIG. 7, the roller pin 24 has a head portion 24a, a relatively narrow neck portion 24b extending from the head portion 24a, a large diameter portion 24c extending from the neck portion 24b, and a large diameter portion 24c. A medium-diameter sliding portion 24d extending from the diameter portion 24c and a relatively thin male screw portion 24e extending from the sliding portion 24d are integrally formed. The external thread portion 24e has the same outer diameter as the neck portion 24b, and the sliding portion 24d has an intermediate outer diameter between the large diameter portion 24c and the neck portion 24b. Prior to assembling the link mechanism 20, as shown in FIG. 11, the neck portion 24b has a columnar shape having the same outer diameter as the male screw portion 24e, and the large-diameter head portion 24a is not seen. As shown in FIG. 11, at the time of assembling the link mechanism 20, first, the front end 21a of the main link 21 is fitted onto the head portion 24a, and then a small cylindrical disk 25 having the same outer diameter as the large diameter portion 24c. The tip of the neck portion 24b is squeezed by “caulking” as a stopper to prevent the two members from being fitted out in a spacer shape, thereby forming a large-diameter head portion 24a.
The large diameter portion 24c has an outer diameter that sufficiently exceeds the width of the first through-hole 9 (most portion 9a described later). Each of the peripheral surfaces of the large-diameter portion 24c and the small disk 25, which are disposed with the front portion 21F of the main link 21 interposed therebetween, has two operated portions that directly receive an output from the actuator 30 described below. Work as The roller pin 24 is engaged so that the sliding portion 24 d slides in the first through hole 9 of the base member 6, and a part of one end face of the large-diameter portion 24 c is the first member of the base member 6. The base member is inserted through the male screw portion 24e into the first through hole 9 so as to face the peripheral portion of the through hole 9, and a nut 27 described later is screwed to the male screw portion 24e via a spring washer 26. 6 is attached.
[0018]
Here, the actuator 30 is of a gas generator type, and is generated by ignition by a cylindrical main body 30a fixed to the second mounting portion 7b of the base member 6 and an igniter provided in the main body 30a. And a piston-shaped drive unit 30b that can linearly protrude from the main body 30a along the axis Y of the actuator 30 based on the gas pressure. The movement trajectory of the drive unit 30b (which coincides with the axis Y) extends in parallel with the elongated first through-hole 9 of the base member 6, and is particularly located at a position almost completely overlapped with each other in a side view. Also, in plan view, they are located very close to each other.
The drive unit 30b is pivotally connected to two pairs of plate-shaped operation pieces 31 that overlap each other at an interval (an interval substantially equal to the thickness of the main link 21) in a side view. A semicircular concave portion 31a for receiving the two operated portions 24c and 25 of the roller pin 24 is formed at the rear end of the roller pin 24.
[0019]
When the actuator 30 is actuated, the driving portion 30b of the actuator 30 causes the large-diameter portion 24c of the roller pin 24 and the small disk 25 to be engaged in the semicircular recess 31a of the operation piece 31 via the pair of left and right operation pieces 31, and Then, the front end 21a of the main link 21 located between the large diameter portion 24c and the small disk 25 is pushed backward. As described above, a pair of left and right operation pieces 31 is provided on the drive unit 30b of the actuator 30, and two operated parts 24c and 25 for receiving the operation pieces 31 are provided on both left and right sides of the front end 21a of the main link 21. The driving force for pushing out the front end 21 a of the main link 21 is prevented from becoming “cantilever” with respect to the main link 21.
The auxiliary link 22 specifies the movement trajectory of the rear end 21c (operating portion) of the main link 21 based on the rearward movement of the roller pin 24 (by the operation of the actuator 30) and the front end 21a (operated portion) of the main link 21. This is provided to prevent the hood 4 itself from moving rearward due to the rearward movement of the rear end 21c of the main link 21 based on the operation of the actuator 30. As a result, the hood is reliably raised to the "open position", and at the same time, the locking mechanism 5 (the locked member 5a on the hood 4 side and the latch 5b on the engine room 3 side) provided at the front end of the engine room 3 is provided. ) Is not overloaded.
In the “closed position” of the hood 4, the front portion 21F of the main link 21 is disposed obliquely upward with respect to the axis Y of the actuator 30 from the front end 21a (operated portion) of the main link 21. When the operation piece 31 is pushed backward, the main link 21 rises in a direction to increase the inclination angle of the actuator 30 with respect to the axis Y, and raises the hood 4 to the “open position” shown in FIGS. 3 and 5.
[0020]
In other words, the operating force received by the front end 21a (operated portion) of the main link 21 from the driving portion 30b of the actuator 30 is parallel to the axis Y and points from the front end 21a of the main link 21 to the rear end 21c (operating portion). The component that is present is greatest in the “closed position” of the hood 4 and, in response to the switching of the hood 4 to the “open position”, the component gradually decreases while at the same time the intermediate connection of the main link 21 It is configured to keep away from Y.
The actuator 30 is provided with a mechanical lock mechanism (not shown) for locking the drive unit 30b in a state where the drive unit 30b protrudes by a maximum amount from the cylindrical main body 30a. In a state where the driving unit 30b is locked, the length of the through hole 9 is determined so that the roller pin 24 is locked between the semicircular recess 31a of the driving unit 30b and the rear end of the first through hole 9. Therefore, in the locked state of the driving unit 30b, the roller pin 24 does not largely separate from the semicircular recess 31a of the driving unit 30b. Therefore, the “elevated position” of the hood 4 is fixedly determined by the rear end of the first through hole 9.
It should be noted that the actuator for driving the link mechanism 20 is not limited to the above-described type, but may be an actuator based on another operation principle such as electric energy, magnetic energy, or compressed air.
[0021]
The lift-up device 100 is provided with a holding plate 40 (an example of a holding member) for temporarily fixing the hood 4 to the normal state. As shown in FIGS. 9 to 11, the holding plate 40 is a flat plate-shaped member made of metal such as stainless steel, and has a rectangular first end 40a and an annular second end 40b. The first end 40a and the second end 40b are integrally connected by a thin easy-to-break portion 40p having a cross-sectional area sufficiently smaller than the first end 40a (eg, a fraction). The rectangular first end 40a has a flat surface fixed to the flange portion 8 of the base member 6 by welding or bonding. As shown in FIGS. 7 and 8, the annular second end 40 b is externally fitted to the male screw portion 24 e of the roller pin 24, and is attached to the end surface of the sliding portion 24 d of the roller pin 24 by a spring washer 26 and a nut 27. Pressed and fixed.
Since the sliding portion 24 d of the roller pin 24 is formed slightly thicker than the peripheral portion of the first through hole 9 of the base member 6, the sliding portion 24 d between the annular second end 40 b of the holding plate 40 and the base member 6 is formed. A slight clearance h (less than 1 mm) is provided between them, thereby ensuring free slidability in the elongated hole 9 of the sliding portion 24d after the holding plate 40 is broken.
[0022]
Further, as shown in FIG. 7, a portion of the flange portion 8 of the base member 6 near the front end to which the first end 40a of the holding plate 40 is fixed is an adjacent portion provided with a long hole 9 by sheet metal pressing or the like. Is slightly displaced inward (on the side where the male screw portion 24e of the roller pin 24 is disposed) (the displacement amount is substantially the same as the clearance h and less than 1 mm), and the flange portion 8 as a whole has a crank shape in plan view. Is presented. As a result, in the normal state of the lift-up device 100, at least the annular second end 40b of the planar holding plate 40 is slightly separated from the surface of the base member 6 (corresponding to the peripheral portion of the long hole 9). It is arranged in. That is, based on the clearance h, the large-diameter portion 24c of the roller pin 24 simultaneously holds the large-diameter portion 24c of the roller pin 24 while the holding plate 40 secures the free sliding property in the elongated hole 9 of the sliding portion 24d after the fracture. By being pressed against the outer surface of the flange portion 8 based on the rigidity of the plate 40 (particularly, the easily breakable portion 40p of the holding plate 40), the roller pin 24 and the front end 21a of the main link 21 in the left-right direction (the axis Y in FIG. 6). (Direction perpendicular to the direction) is reasonably suppressed.
Since the holding plate 40 has the easily breakable portion 40p provided substantially along the axis Y of the actuator 30, when the actuator 30 generates a driving force, the holding member 40 is substantially subjected only to the pulling force (bending stress). 9B), the first end 40a and the second end 40b are along the axis Y of the actuator 30 as shown by the arrow in FIG. Separated. As a result, the hood 4 is moved from the normal closed position (the state shown in FIGS. 2 and 4) to the open position (FIG. 3) where the rear end of the hood 4 is raised by a predetermined amount (for example, 5 cm to 10 cm) from the closed position. And the state of FIG. 5), and a vertical space is secured between the lower surface of the hood 4 and the engine.
[0023]
More specifically, as shown in FIGS. 10 and 11, the hole forming the annular second end 40 b of the holding member 40 is arranged in the up-down direction (substantially perpendicular to the axis Y of the actuator 30) as compared to the front-back direction. The inner diameter dimension “m” of the hole of the second end 40b in the front-rear direction is substantially the same as the outer diameter of the male screw portion 24e (circular cross section) of the roller pin 24 (in the direction in which the roller pin 24 extends). On the other hand, the vertical inner diameter “n” of the hole of the second end 40b is larger than the outer diameter of the male screw portion 24e (circular cross section) with a margin (for example, the vertical difference). Have a clearance of about 1 mm). As shown in FIGS. 9 to 11, the long hole 9 has an end 9b (an example of a temporary fixing position) having a small upper and lower opening width in order to act as a holding portion for the roller pin 24 at the front side thereof. Further, on the rear side (right side shown in FIG. 9) from the end 9b, there is a sliding portion 9a having a large vertical width extending continuously from the end 9b. The dimension "j" of the opening width of the sliding portion 9a is larger than the outer diameter of the sliding portion 24d (circular cross section) of the roller pin 24 with a margin (for example, there is a clearance of about 0.5 mm on each of the upper and lower sides). However, the dimension “k” of the opening width at the end 9 b of the elongated hole 9 is set to be substantially the same as the outer diameter of the sliding portion 24 d (circular cross section) (substantially no looseness).
Therefore, when the hood 4 is in the normal state (closed position), the backlash of the roller pin 24 and the front end 21a of the main link 21 in the front-rear direction is equal to the annular second end of the holding member 40, as shown in FIG. It is restrained by the restraint in the front-rear direction between the male screw portion 24e of the roller pin 24 and the roller pin 24, and the roller pin 24 is located at the front end 9b of the elongated hole 9, so that the same member is rattled in the vertical direction. Is suppressed by the vertical restraint between the end portion 9b of the elongated hole 9 of the base member 6 and the sliding portion 24d of the roller pin 24. Suppressing the backlash of the roller pin 24 and the front end 21a of the main link 21 in the front-back direction means preventing the rear end of the hood 4 from vibrating in the vertical direction. Suppressing vertical rattling of the roller pin 24 and the front end 21a of the main link 21 means preventing vertical vibration of the front end 21a of the main link 21, the roller pin 24, the operation piece 31 of the actuator 30, and the like. .
The inner diameter “n” of the hole at the second end 40b in the vertical direction is set to be slightly larger than the outer diameter of the male screw portion 24e, so that the assembling work can be facilitated or the holding member 40 The accuracy required for the position for fixing is relatively low. Further, since the width dimension “j” of the long hole 9 in the most part 9 a of the entire length is formed with a margin larger than the outer diameter of the sliding portion 24 d of the roller pin 24, the actuator 30 generates the driving force. Immediately thereafter, the roller pin 24 enters the most part 9a of the long hole 9 having a sufficiently large width "j", and is smoothly slid.
[0024]
[Another embodiment]
<1> An annular shape in which a thin easily breakable portion is not provided between one end of the holding plate to be fixed to the vehicle side and the other end to be connected to the roller pin, and instead the other end to be connected to the roller pin is completely closed. Rather, a part of the circumference of the ring externally fitted to the roller pin is missing, and the end surface of the upper semi-annular portion and the end surface of the lower semi-annular portion are formed into an incomplete annular shape in which the end surface faces up and down. Based on this, the upper and lower end surfaces may be vertically separated and deformed to allow the roller pin to escape backward.
[0025]
<2> Instead of the gas generator type actuator 40, other driving means may be used. Examples of other driving means include a cylinder system based on compressed air generated by a compressor, a compression spring system, and a hydraulic system. It is desired that these driving means are also fixed to the base member 6, but the present invention is not necessarily limited to this configuration. Only the link mechanism is provided on the base member 6, and the driving means may be fixed to any part of the vehicle. .
[Brief description of the drawings]
FIG. 1 is a perspective view showing a front portion of a vehicle.
FIG. 2 is a side view showing the front portion of the vehicle when the hood is in a closed position.
FIG. 3 is a side view showing the front portion of the vehicle when the hood is in an open position.
FIG. 4 is a side view showing the lift-up device when the hood is in a closed position.
FIG. 5 is a side view showing the lift-up device when the hood is at an open position.
FIG. 6 is a plan view showing the lift-up device (the hood is in a closed position).
FIG. 7 is a plan view showing a part of the lift-up device of FIG. 4;
FIG. 8 is a front view showing a part of the lift-up device of FIG. 4;
FIG. 9 is a side view showing the operation of the holding plate of the lift-up device of FIG. 4;
FIG. 10 is an enlarged side view showing the holding plate of FIG. 9;
FIG. 11 is an exploded perspective view showing a part of the lift-up device of FIG. 4;
[Explanation of symbols]
1 Front part
2 Engine
3 Engine room
4 Food
5 Lock mechanism
50 sensors
100 Lift-up device
30 Actuator (drive means)
6 Base member
8 Flange
9 Slot
10 Second through hole
20 Link mechanism
21 Main link
21a Operated part
21b Intermediate connection
21c Operation unit
22 Auxiliary link
40 Holding plate (holding member)
40a 1st end
40b 2nd end
40p easily breakable part
m The inside diameter in the front-rear direction of the hole at the second end 40b of the holding plate
n Vertical inner diameter of the hole at the second end 40b of the holding plate
k Width of front end 9b of long hole 9
j Width of most part 9a of long hole 9

Claims

A closing member opening operation device for switching a closing member capable of closing a space provided in a vehicle from a closed position in which the space is closed to an open position separated from the vehicle with respect to the closed position,
A link having a base member provided on the vehicle, an operated part pivotally supported by a connection pin moving in an elongated hole formed in the base member, and an operation part pivotally supported by the closing member; Driving means for moving a pin in the elongated hole, and a holding member for temporarily fixing the connecting pin to a temporarily fixed position in the elongated hole corresponding to the closed position of the closing member, and The holding member includes one end attached to the base member side and the other end externally fixed to the connection pin,
The inner dimension of the opening provided at the other end of the holding member to be fitted to the connecting pin in the direction along the longitudinal direction of the long hole is equal to the outer diameter of the connecting pin, and An opening operation device for a closing member, wherein an inner dimension of the elongated hole in a direction orthogonal to a longitudinal direction thereof is set to exceed an outer diameter of the connecting pin by a predetermined amount.

The inner dimension of the long hole in a direction orthogonal to the longitudinal direction is equal to the outer diameter of the connecting pin at the temporary fixing position, and the connecting pin is sent out by the driving means, and the temporary fixing position of the long hole is 2. The opening operation device for a closing member according to claim 1, wherein the opening is set to exceed the outer diameter of the connection pin by a predetermined amount in different sliding regions.

The connecting pin has a sliding portion slidable in the elongated hole, and one side surface of the sliding portion is provided with a pressed end surface for pressing and fixing the other end of the holding member. The other side surface of the sliding portion is provided with a large diameter portion facing the peripheral portion of the long hole of the base member, and the sliding portion has a thickness exceeding the sliding region of the long hole. The fixing point for attaching the one end of the holding member of the base member is such that a clearance of a predetermined dimension is formed between the other end of the holding member and the base member. Displaced from the large-diameter portion of the connection pin toward the pressed end surface with respect to the location where the slidable region is provided, and the driving unit moves the holding member between the one end and the other end. After the break at the operated portion of the link pin and the link Opening operation device of the closure member according to claim 2, which is configured to move along the long hole the.

The closing member is a hood provided so as to be switchable between a closed position in which the space of the vehicle is closed and an open position in which at least a part thereof has moved upward. The opening of the closing member according to any one of claims 1 to 3, wherein the hood is lifted upward by the link by moving the operated portion of the link along the elongated hole after releasing the stop. Operating device.