JP4207444B2 - Pedal vibration absorber - Google Patents

Pedal vibration absorber Download PDF

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Publication number
JP4207444B2
JP4207444B2 JP2002080746A JP2002080746A JP4207444B2 JP 4207444 B2 JP4207444 B2 JP 4207444B2 JP 2002080746 A JP2002080746 A JP 2002080746A JP 2002080746 A JP2002080746 A JP 2002080746A JP 4207444 B2 JP4207444 B2 JP 4207444B2
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pedal
outer diameter
cylindrical portion
intermediate member
rod
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JP2003278834A (en
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恭明 服部
満 飯塚
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Aisin Corp
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Aisin Seiki Co Ltd
Aisin Corp
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Priority to JP2002080746A priority Critical patent/JP4207444B2/en
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/30—Controlling members actuated by foot
    • G05G1/46—Means, e.g. links, for connecting the pedal to the controlled unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16—Master control, e.g. master cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B60T7/06—Disposition of pedal

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Vibration Prevention Devices (AREA)
  • Springs (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、ペダル（例えば、クラッチペダル、ブレーキペダル等）に作用する外部からの振動を吸収するペダル振動吸収装置に関するものである。
【０００２】
【従来の技術】
従来、車両においては、動力の駆動源としてエンジンが使用されている。例えば、エンジンは吸気および排気を繰り返してピストンをシリンダ内で動作させ、ピストンの動作により、クランクシャフトを回転動作させる。そして、クランクシャフトの回転は、クラッチを介してミッションに伝わった後、駆動輪へと伝達される。
【０００３】
この場合、エンジンで発生した振動は、エンジンに固定されるミッションへと伝わるが、ミッションへの動力伝達を行うクラッチのダイヤフラムスプリング等を介して、レリーズベアリングに伝えられる。その後、振動はクラッチレリーズフォークおよびそれにつながるクラッチレリーズシリンダのプッシュロッドに伝わり、クラッチレリーズシリンダのピストンに伝えられる。
【０００４】
その後、クラッチレリーズ系のフルードを介して、クラッチマスタシリンダのピストンに伝えられ、クラッチマスタシリンダを動作させるプッシュロッドおよびクレビスを介して、クラッチペダルに伝達される。
【０００５】
この様に、エンジンにより発生した振動は、クラッチペダルまで伝達されてしまうと、クラッチペダルの操作フィーリングを著しく損なってしまう。そこで、この問題を解決するために、クラッチペダルとクラッチマスタシリンダとの間にペダル振動吸収装置を配設することが提案されている。
【０００６】
例えば、実開昭５７−１６０４６号に示される振動吸収装置では、クラッチペダルがつながるクレビスに有底筒状部を一体固定して、内部に弾性部材を配設し、筒状部内を摺動可能な圧力部材で弾性部材を圧縮状態で保持する。そして、この状態で、筒状部の周方向に設けられたスリット溝を半径方向内側にかしめ加工を行って変形させ、圧力部材の抜けを防止している。
【０００７】
【発明が解決しようとする課題】
一般的に、車両に取り付けられたクラッチペダルの作動は、円弧運動である事から、振動吸収装置自体に座屈が生じる。
【０００８】
このため、上記した公報に示される振動吸収装置では、ペダル連結部材が動作すると、筒状部圧力部材を内部に収め、筒状部から圧力部材の抜けを防止している筒状部の特定部位（例えば、筒状部の端部に設けられた径方向のかしめ部）において、異音が発生し得る。これは、筒状部と圧力部材とが金属である場合、筒状部内を圧力部材が移動すると、金属同士の接触による金属異音が発生してしまう事により発生し得る。
【０００９】
また、圧力部材を筒状部の中に設ける構成を取ると、円筒部の径方向での、かしめ加工を必要とし、振動吸収装置の大部分の構成部品が金属であると、重量が重くなり、コストアップを招くものとなってしまう。
【００１０】
また、車両への取り付けを行う場合、上記した構成において、圧力部材の外周面には二面幅が形成されている。例えば、圧力部材をロッドに固定する為、ロッドの長さを固定するナットを締め付けようとする場合、圧力部材がナットの締め付けにより連れまわりしない様に、圧力部材の外周に設けられた二面幅をスパナ等で固定しながら、ナットを締め付ける方法が取られる。この構成では、ナットの締め付けだけで、振動吸収装置の取り付けは行えず、作業性が良くないものとなってしまう。
【００１１】
よって、本発明は上記の問題点に鑑みてなされたものであり、ペダル操作時の異音の発生を防止し、取り付け性が良く、軽量化および低コスト化に対応したペダル振動防止装置を提供することを技術的課題とする。
【００１２】
【課題を解決するための手段】
上記の課題を解決するために講じた第１の技術的手段は、請求項１に示すように、マスタシリンダを作動させるペダルに連結されるペダル連結部材と、フランジを有する筒状を呈し、前記ペダルに連動するロッドが接続される中間部材と、該中間部材と前記ペダル連結部材との間に配設され、前記マスタシリンダからの振動を吸収する振動吸収部材とを備えたペダル振動吸収装置において、前記中間部材は、前記ロッドの軸方向に延在されるとともに前記ロッドが接続される延在部と、前記延在部の外径よりも大きな外径を有すると共に前記延在部と前記振動吸収部材との間に配設されるフランジ部を備え、樹脂より成り、前記中間部材に被さり、前記中間部材を前記ペダル連結部材に固定する固定部材を備え、前記固定部材は、樹脂より成り、前記軸方向に延在され、前記延在部が挿通されるとともに前記延在部をガイドするガイド孔を有する筒状のガイド部と、前記ガイド部の外径よりも大きな外径を有すると共に前記ガイド部の前記ペダル連結部材側に配設されて前記ペダル連結部材に組み付けられる固定部を備え、前記固定部材に、前記中間部材の前記延在部としての筒状部に当接する当接面を有したことである。
【００１３】
第１の技術的手段によると、固定部材は樹脂より成り、中間部材に被さって、中間部材を前記ペダル連結部材に固定するようにしたので、中間部材が固定部材に対して移動しても、固定部材が樹脂のため、金属同士が接触する高周波異音の発生が、中間部材に固定部材を被せてペダル連結部材に固定するという簡単な構成により防止される。
【００１４】
この場合、中間部材はフランジを有する筒状を呈し、固定部材に中間部材の筒状部に当接する当接面を有するものとすれば、ペダルが操作時に円弧運動して振動吸収装置の座屈が生じたとしても、円筒部に当接する当接面を大きく設定することが可能となる。このため、振動吸収装置の軸長を従来に比べて小さくすることが可能となる。この場合、円筒部が当接面にてガイドされ、高いガイド効果を得ることが可能となる。
【００１５】
また、前述の課題を解決するために講じた第２の技術的手段は、請求項２に示すように、マスタシリンダを作動させるペダルに連結されるペダル連結部材と、筒状部とフランジとを有し、前記ペダルに連動するロッドが螺合する中間部材と、該中間部材と前記ペダル連結部材との間に配設され、前記マスタシリンダからの振動を吸収する振動吸収部材と、前記ロッドと前記中間部材とを固定するナットとを備えたペダル振動吸収装置において、前記筒状部には前記ロッドが接続され、前記フランジは前記筒状部と前記振動吸収部材との間に配設されるとともに前記筒状部の外径よりも大きな外径を有し、樹脂より成り、前記筒状部の外径に被さり、前記中間部材を前記ペダル連結部材に固定する固定部材を備え、前記固定部材は、樹脂より成り、前記筒状部の軸方向に延在され、前記筒状部が挿通されるとともに前記筒状部をガイドするガイド孔を有する筒状のガイド部と、前記ガイド部の外径よりも大きな外径を有すると共に前記ガイド部の前記ペダル連結部材側に配設されて前記フランジに被さり前記ペダル連結部材に組み付けられる固定部を備え、前記筒状部の外径と前記固定部材の内径にはクリアランスが形成され、前記固定部材に対して前記中間部材が所定角度だけ相対回転した場合、前記筒状部の外径が複数箇所で当接する当接面を、前記固定部材の内径に有し、前記筒状部の外周面と前記ガイド部の内周面との間、および前記フランジの外周面と前記固定部の内周面との間には所定のクリアランスが設けられ、前記ペダルの作動に伴って前記筒状部と前記ガイド部が当接することである。
【００１６】
上記した手段によれば、固定部材は樹脂より成り、筒状部の外径に被さって、中間部材がペダル連結部材に固定されるので、例えば、中間部材が固定部材に対して移動しても、固定部材が樹脂のため、金属同士が接触する高周波異音の発生が、中間部材に固定部材を被せてペダル連結部材に固定するという簡単な構成により防止される。
【００１７】
更に、筒状部の外径と固定部材の内径にはクリアランスが形成され、固定部材に対して中間部材が所定角度だけ相対回転した場合、筒状部の外径が複数箇所で当接する当接面を、固定部材の内径に有すれば、取り付け時において、中間部材にロッドをナットにより締め付けて固定する場合、筒状部の外径と固定部材の内径にはクリアランスが形成されているので、中間部材が固定部材に対して相対回転し、中間部材の筒状部はナットと一緒に連れまわる。その結果、中間部材の円筒部は、ペダル連結部材に固定される固定部材の当接面に複数箇所にて当接し、ナットと中間部材、及び、中間部材と固定部材との２重絞めが行える。
【００１８】
これによって、従来の如く、例えば、中間部材の外周に設けられた二面幅をスパナ等で固定した状態でナットを締め付けるという方法は、必ずしも必要でなくなり、ナットの締め付け操作だけでも、マスタシリンダを作動させるロッドとの取り付けが行え、取り付け時の作業性が向上する。
【００１９】
この場合、中間部材と固定部材との回り止め構造は、中間部材が固定部材に対して相対回転し、複数の箇所にて面接触する様にしているので、当接面での応力の集中を避けて、取り付けに伴う応力を分散させることが可能である。
【００２０】
また、円筒部の外径には、二面幅が少なくとも２組形成されると、右ネジまたは左ネジに関係なく、二面幅により、中間部材を固定部材に対して固定することが可能である。
【００２１】
更に、ペダル連結部材は樹脂より成り、固定部材はペダル連結部材に溶着または接着により固定されると、ペダル連結部と固定部材は共に樹脂となり、金属に比べて軽量化および低コスト化に対応が可能である。更に、固定部材のペダル連結部材の固定には、金属加工は必要なく、安価で簡単な溶着または接着により固定が可能となる。
【００２２】
【発明の実施の形態】
以下、本発明の一実施形態について、図面を参照して説明する。図１にペダル振動吸収装置１の構成を示す。ここに示すペダル振動吸収装置１は、車両において、ペダル（例えば、クラッチペダル、ブレーキペダル等）とマスタシリンダ（例えば、クラッチマスタシリンダ、ブレーキマスタシリンダ等）との間に配設されるものであって、エンジン等の振動源からの振動を、マスタシリンダ１０からペダル２間の動力伝達の途中に、クッション部材９を介在させ、クッション部材９によって、その振動を吸収する。
【００２３】
これによって、ペダル２に振動源からの振動は伝達されず、ペダル操作時のペダル操作フィーリングが向上する様にしている。尚、以下の説明において、ペダル振動吸収装置１は、一例としてクラッチペダルと、クラッチマスタシリンダとの間に配設されるものとして説明する。
【００２４】
そこで、図１を参照して、ペダル振動吸収装置１について説明する。ペダル振動吸収装置１は、ペダル２に接続されるクレビス７と、フランジ５ｃを有しマスタリシンダ１０を作動させるロッド３に螺合するサブロッド５と、サブロッド５をクレビス７のカップ部７ｂに固定されるガイドカバー６と、カップ部内に配設されてサブロッド５により挟まれるクッション部材９と、ロッド３をサブロッド５に固定するナット４とを備えている。
【００２５】
クレビス７は、ペダル取付側（図１に示す右側）に台形状を呈するペダル連結部７ａを備えると共に、マスタシリンダ側（図１に示す左側）には内部に凹部７ｃが形成されるカップ部７ｂとを備え、ペダル連結部７ａとカップ部７ｂとは一体で構成される。ペダル連結部７ａには、クラッチ操作を行うペダル２が、ペダル取付孔７ｅにピン等の連結部材により取り付けられる。また、ペダル連結部７ａと反対側のカップ部７ｂの凹部７ｃには、中央に突起７ｄが形成され、突起７ｄを中心としてＥＰＤＭ等のゴム材より成るクッション部材９が配設される。このクッション部材９は、中央に孔９ａを有し、孔９ａの径は突起７ｄの径よりも小さくなっている。
【００２６】
一方、クッション部材９の一側には、金属（例えば、炭素鋼等）から成る円筒状のサブロッド５が配設される。サブロッド６は、軸方向に円筒状となった円筒部５ａを有すると共に、クッション部材９と当接する軸方向の一方の端面にはフランジ５ｃを有する。サブロッド５は、ガイドカバー６により軸方向の一方の移動が規制され、クッション部材９を予備圧縮した状態で、ガイドカバー６によって、カップ部７ｂの端部に溶着または接着される。
【００２７】
この状態で、サブロッド５の端面とカップ部７ｂの底部とは平行となり、離間対向する。中心孔９ａを有するクッション部材９には、中心孔９ａよりも若干大きな突起５ｅがサブロッド５のペダル側の端面中央に形成されおり、クッション部材９の両側の突起５ｅ，７ｄはクッション部材９の中心孔９ａに嵌り、径方向のクッション部材９の移動は突起５ｅ，７ｄにより規制される。
【００２８】
つまり、クッション部材９の両側の突起５ｅ，７ｄは、クッション部材９の中心孔９ａに、所定の締め代をもって挿入されることにより、サブロッド５をクレビス７に対し、径方向の位置決めがなされている。
【００２９】
サブロッド５をクレビス７に対して固定し、サブロッドの軸方向の移動をガイドすると共に規制するガイドカバー６は、強度的に強い樹脂（例えば、クレビス７と同じ材質である６，６ナイロン等）より成る。サブロッド５の中央に、ネジ孔５ｃが形成された筒状部５ａが挿通するガイド孔６ａを有すると共に、フランジ５ｃの外径を覆う固定部６ｃが形成され、クレビス７のカップ部７ｂの外径と同一の円筒状を呈する。ガイドカバー６は、固定部６ｃがカップ部７ｂの端部に形成された凹部７ｆに嵌り、凹部７ｆと固定部６ｃとの当接面が溶着または接着される。
【００３０】
マスタシリンダ１０を作動させるロッド３は、ペダル２にペダル連結部７ａを取り付けた状態でマスタシリンダ１０との長さは、サブロッド５のネジ孔５ｃにロッド３の先端３ａが螺合し、先端３ａがネジ孔５ｃに螺合する長さによって位置調整される。そして、位置調整後には、その位置がずれない様、サブロッド５のマスタシリンダ側の端面にはロッド３の先端３ａからナット４が嵌められ、ナット４がサブロッド５に対して締結される。これによって、ロッド３の長さの変動を防止する。
【００３１】
以上、説明した構成において、サブロッド５は、クレビス７のカップ部７ｂの中で、クッション部材９を撓ませて、円筒部５ａがガイドカバー６のガイド孔６ａに沿って、サブロッド５はクッション部材９の撓み分だけ移動する事ができる。
【００３２】
そこで、本発明について説明する。サブロッド５の円筒部５ａの外径は、図２に示す如く、花びら形状を呈する。サブロッド５の外形には、２組の互いに平行な直線（間隔Ｌの互いに直交する平行な２直線）で囲まれる二面幅５ｄが、円筒部５ａの外周面において８箇所に形成されている。この隣り合う二面幅５ｄの間には、凹部形状となった、にがし溝５ｇが形成されている。このにがし溝５ｇは、隣り合う当接面６ｄ同志の頂点が干渉しないように、サブロッド５の隣り合う二面幅５ｄの面中央に設けられている。
【００３３】
一方、ガイド孔６ａの内周面は、サブロッド５とガイドカバー６との中心が一致した状態において、円筒部５ａの外周とガイドカバー６のガイド孔６ａとの間にはクリアランス１１が設けられている。このクリアランス１１によって、サブロッド５はガイドカバー６に対して、所定角度（例えば、２５〜３０度程度）だけ相対回転可能である。その結果、相対回転した場合に、二面幅５ｄの面が面接触にて当接する当接面６ｄが、ガイド孔６ａの内周面に形成されている。この二面幅５ｄの面と当接面６ｄは、ロッド３が右ネジあるいは左ネジの場合にも対応できる様、ロッド３およびサブロッド５の中心を通る線対称の形状となっている。
【００３４】
次に、本実施形態における作動について説明する。
【００３５】
図１に示す構成において、クラッチペダルが踏まれて、ペダル２が操作されると、ペダル踏力はマスタシリンダ１０へ伝達される途中、ペダル振動吸収装置１に伝達される。ペダル振動吸収装置１に伝達されたペダル踏力は、クッション部材９に伝わり、クッション部材９を弾性変形した後、サブロッド５を介してロッド３に伝わった後、マスタシリンダ１０へと伝達され、マスタシリンダ１０が作動し、クラッチ装置を制御する液圧を上昇させる。
【００３６】
一方、クラッチペダルの操作がなくなり、ペダル２を解放すると、マスタシリンダ１０が非作動状態となり、マスタシリンダ内の図示しないピストンを介してロッド３が戻される（図１の左方向に移動）とともに、クレビス７が戻される。この場合、クッション部材９の弾性変形がペダル操作力の作用しない初期状態に戻る。
【００３７】
以上の様な構成により、マスタシリンダ側のサブロッド５とクラッチペダル側のクレビス７とは、動力伝達過程において、クッション部材９を介して連結される。このことから、振動源となるエンジンから、ペダル２へと伝達される振動伝達は、クッション部材９によって吸収されるので、ペダル操作フィーリングに影響を及ぼす振動は、クッション部材９によって効果的に絶たれる。
【００３８】
更に、サブロッド５の円筒部５ａの外周面とガイドカバー６のガイド孔６ａとの間、および、サブロッド５のフランジ５ｃの外径とフランジ５ｃに被さる固定部６ｃの内周面には、所定のクリアランスが設けられている。このため、例えば、クラッチペダルの円弧作動による偏心荷重を受けても、サブロッド５の円筒部５ａとガイドカバー６のガイド孔６ａの内周面が当接するため、ガイド孔６ａの径に対する軸長の比率を大きく設定することができ、高いガイド効果を得ることができる。
【００３９】
ペダル振動吸収装置１をロッド３へ取り付ける場合には、ロッド３を所定の長さに調整する（図２の（ａ）参照）。その後、ナット４をスパナ等により締め付けると、ナット４とともにサブロッド５も連れ回る。この場合、サブロッド５の円筒部５ａに形成された二面幅５ｄが所定角度だけ回転すると、ガイド孔６ａに形成されたガイド当接面１８に当接して、ガイドカバー６に対するサブロッド５の相対回転が阻止される。
【００４０】
従って、ロッド３をクレビス７に固定する場合、サブロッド５の外径に形成された二面幅をスパナ等によりあえて固定しなくても、ナット４を締め付け、ロッド３をクレビス７に対して固定することができ、ペダル振動吸収装置１の車両への取り付け時の作業性が向上する。
【００４１】
また、本実施形態においては、クレビス７およびクレビス７のカップ部７ｂに固定されるガイドカバー６は樹脂より成り立っているので、金属から成るサブロッド５が、ペダル操作時に軸方向に移動して、サブロッド５の円筒部５ａとガイドカバー６のガイド孔６ａが接触しても、ガイドカバー６は樹脂の為、金属同士の接触する際に発生する特有の高周波な異音を発生することはなく、ペダル振動吸収装置１の信頼性が向上する。
【００４２】
更に、ガイド孔６ａに形成された当接面６ｄは、サブロッド５の二面幅５ｄと複数の面（例えば、図２の構成では４箇所の面）で面接触する様、角度を設定している為、ナット４の締め付けによる回転トルクが加わっても、ガイド孔６ａの当接面６ｄに作用する内部応力を効率良く分散させることができる。この為、ガイドカバー６を樹脂化して作っても、ナット４の締め付けトルクに相当する十分な強度を確保することができる。
【００４３】
更にその上、クレビス７のカップ部７ｂおよびペダル２が接続されるペダル連結部７ａまで一体の樹脂で成形する事によって、ペダル振動吸収装置１は極めて軽量化できるものとなり、低コストで作る事ができる。
【００４４】
図２に示す実施形態においては、サブロッド５に二面幅５ｄを２組持ち、その二面幅５ｄが当接面６ｄにて当接する構成を説明したが、二面幅５ｄの面および二面幅５ｄの面が当接する面の組の数は、少なくとも２組以上あれば良く、例えば、図３の（ａ）に示す如く、二面幅５ｄの面を３組の平行な直線（距離：Ｌ）で囲まれた線上（例えば、正六角形の辺上）に設けて、ナット４によって、図３の（ｂ）の様に固定しても、ナット締め付け時の応力分散が複数箇所にて行え、上記と同様な効果を奏するものとなる。
【００４５】
【発明の効果】
第１の技術的手段によれば、固定部材は樹脂より成り、中間部材に被さって、中間部材を前記ペダル連結部材に固定するようにしたので、中間部材が固定部材に対して移動しても、固定部材が樹脂のため、金属同士が接触する高周波異音の発生が、中間部材に固定部材を被せてペダル連結部材に固定するという簡単な構成により防止できる。
【００４６】
この場合、中間部材はフランジを有する筒状を呈し、固定部材に中間部材の筒状部に当接する当接面を有するものとすれば、ペダルが操作時に円弧運動して振動吸収装置の座屈が生じたとしても、円筒部に当接する当接面を大きく設定することができ、振動吸収装置の軸長を従来に比べて小さくすることができる。この場合、円筒部が当接面にてガイドされ、高いガイド効果を得ることができる。
【００４７】
また、第２の技術的手段によれば、固定部材は樹脂より成り、筒状部の外径に被さって、中間部材がペダル連結部材に固定されるので、例えば、中間部材が固定部材に対して移動しても、固定部材が樹脂のため、金属同士が接触する高周波異音の発生が、中間部材に固定部材を被せてペダル連結部材に固定するという簡単な構成により防止できる。
【００４８】
更に、筒状部の外径と固定部材の内径にはクリアランスが形成され、固定部材に対して中間部材が所定角度だけ相対回転した場合、筒状部の外径が複数箇所で当接する当接面を、固定部材の内径に有すれば、取り付け時において、中間部材にロッドをナットにより締め付けて固定する場合、中間部材が固定部材に対して相対回転し、中間部材の円筒部は、ペダル連結部材に固定される固定部材の当接面に複数箇所にて当接し、ナットと中間部材、及び、中間部材と固定部材との２重絞めを行うことができる。
【００４９】
これによって、従来の如く、例えば、中間部材の外周に設けられた二面幅をスパナ等で固定した状態でナットを締め付けるという方法は、必ずしも必要でなくなり、ナットの締め付け操作だけでも、マスタシリンダを作動させるロッドとの取り付けを行うことができ、取り付け時の作業性が向上する。
【００５０】
この場合、中間部材と固定部材との回り止め構造は、中間部材が固定部材に対して相対回転し、複数の箇所にて面接触する様にしているので、当接面での応力の集中を避けて、取り付けに伴う応力を分散させることができる。
【００５１】
また、円筒部の外径には、二面幅が少なくとも２組形成されると、右ネジまたは左ネジに関係なく、二面幅により、中間部材を固定部材に対して固定することができる。
【００５２】
更に、ペダル連結部材は樹脂より成り、固定部材はペダル連結部材に溶着または接着により固定されると、ペダル連結部と固定部材は共に樹脂となり、金属に比べて軽量化および低コスト化に対応でき、固定部材のペダル連結部材の固定には、金属加工は必要なく、安価で簡単な溶着または接着により固定できる。
【図面の簡単な説明】
【図１】本発明の一実施形態におけるペダル振動吸収装置の構成を示す要所部分断面図である。
【図２】図１に示すＡ−Ａ断面において、（ａ）はナット締め付け前の状態を示す図、（ｂ）ナット締め付け後の状態を示す図である。
【図３】図２の変形例を示し、（ａ）はナット締め付け前の状態を示す図、（ｂ）ナット締め付け後の状態を示す図である。
【符号の説明】
１ ペダル振動吸収装置
２ ペダル
３ ロッド
３ａ 先端
４ ナット
５ サブロッド（中間部材）
５ａ 円筒部
５ｄ 二面幅
６ ガイドカバー（固定部材）
６ｄ 当接面
７ クレビス（ペダル連結部材）
７ａ ペダル連結部
７ｂ カップ部部
７ｃ 凹部
９ クッション部材（振動吸収部材）
１０ マスタシリンダ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pedal vibration absorber that absorbs external vibration acting on a pedal (for example, a clutch pedal, a brake pedal, etc.).
[0002]
[Prior art]
Conventionally, in a vehicle, an engine is used as a power source. For example, the engine repeats intake and exhaust to operate the piston in the cylinder, and rotates the crankshaft by the operation of the piston. The rotation of the crankshaft is transmitted to the transmission via the clutch, and then transmitted to the drive wheels.
[0003]
In this case, vibration generated in the engine is transmitted to a mission fixed to the engine, but is transmitted to a release bearing via a diaphragm spring of a clutch that transmits power to the mission. Thereafter, the vibration is transmitted to the clutch release fork and the push rod of the clutch release cylinder connected thereto, and to the piston of the clutch release cylinder.
[0004]
After that, it is transmitted to the piston of the clutch master cylinder through the fluid of the clutch release system, and is transmitted to the clutch pedal through the push rod and clevis that operate the clutch master cylinder.
[0005]
Thus, if the vibration generated by the engine is transmitted to the clutch pedal, the operation feeling of the clutch pedal is significantly impaired. Therefore, in order to solve this problem, it has been proposed to dispose a pedal vibration absorber between the clutch pedal and the clutch master cylinder.
[0006]
For example, in the vibration absorbing device disclosed in Japanese Utility Model Publication No. 57-16046, a bottomed cylindrical portion is integrally fixed to a clevis to which a clutch pedal is connected, and an elastic member is disposed inside, so that the inside of the cylindrical portion can slide. The elastic member is held in a compressed state by a pressure member. In this state, the slit groove provided in the circumferential direction of the cylindrical portion is deformed by caulking inward in the radial direction to prevent the pressure member from coming off.
[0007]
[Problems to be solved by the invention]
In general, the operation of a clutch pedal attached to a vehicle is a circular motion, so that the vibration absorbing device itself is buckled.
[0008]
For this reason, in the vibration absorber shown in the above-mentioned publication, when the pedal connecting member operates, the tubular portion pressure member is housed inside, and the specific portion of the tubular portion that prevents the pressure member from coming off from the tubular portion (For example, abnormal noise may occur in the caulking portion in the radial direction provided at the end of the cylindrical portion). This can occur when the cylindrical part and the pressure member are made of metal, and when the pressure member moves in the cylindrical part, metal abnormal noise is generated due to contact between the metals.
[0009]
Further, if the pressure member is provided in the cylindrical portion, it requires caulking in the radial direction of the cylindrical portion, and if most of the components of the vibration absorbing device are made of metal, the weight becomes heavy. This will cause a cost increase.
[0010]
Moreover, when attaching to a vehicle, in the above-mentioned structure, the two-sided width | variety is formed in the outer peripheral surface of a pressure member. For example, in order to fix the pressure member to the rod, when tightening a nut that fixes the length of the rod, the two-sided width provided on the outer periphery of the pressure member so that the pressure member does not rotate by tightening the nut A method of tightening the nut while fixing with a wrench is used. In this configuration, the vibration absorber cannot be attached only by tightening the nut, and workability is not good.
[0011]
Therefore, the present invention has been made in view of the above problems, and provides a pedal vibration prevention device that prevents the generation of abnormal noise during pedal operation, has good mountability, and is lightweight and low in cost. Doing this is a technical issue.
[0012]
[Means for Solving the Problems]
The first technical means taken in order to solve the above-mentioned problem, as shown in claim 1, presents a cylinder having a pedal connection member connected to a pedal for operating a master cylinder and a flange, In a pedal vibration absorbing device comprising: an intermediate member to which a rod interlocking with a pedal is connected; and a vibration absorbing member that is disposed between the intermediate member and the pedal connecting member and absorbs vibration from the master cylinder. The intermediate member extends in the axial direction of the rod and has an extending portion to which the rod is connected , an outer diameter larger than an outer diameter of the extending portion, and the extending portion and the vibration. a flange portion disposed between the absorbing member, made of a resin, overlies the intermediate member includes a fixing member for fixing the intermediate member to the pedal connecting member, said fixing member is a resin formed , Extends in the axial direction, a cylindrical guide portion having a guide hole for guiding the extending portion with the extending portion is inserted, which has an outer diameter greater than the outer diameter of the guide portion A contact surface that is provided on the pedal connection member side of the guide portion and that is attached to the pedal connection member, and contacts the cylindrical member as the extension portion of the intermediate member. It is having .
[0013]
According to the first technical means, the fixing member is made of resin, and covers the intermediate member so that the intermediate member is fixed to the pedal connecting member. Therefore, even if the intermediate member moves relative to the fixing member, Since the fixing member is made of resin, generation of high-frequency noise due to contact between metals is prevented by a simple configuration in which the intermediate member is covered with the fixing member and fixed to the pedal connecting member.
[0014]
In this case, if the intermediate member has a cylindrical shape with a flange, and the fixing member has a contact surface that contacts the cylindrical portion of the intermediate member, the pedal moves in an arc during operation and the buckling of the vibration absorbing device occurs. Even if this occurs, it is possible to set a large contact surface that contacts the cylindrical portion. For this reason, it becomes possible to make axial length of a vibration absorber smaller compared with the past. In this case, the cylindrical portion is guided by the contact surface, and a high guide effect can be obtained.
[0015]
The second technical means taken in order to solve the above-mentioned problem includes, as shown in claim 2 , a pedal connecting member connected to a pedal for operating the master cylinder, a cylindrical portion and a flange. An intermediate member with which a rod interlocking with the pedal is screwed, a vibration absorbing member that is disposed between the intermediate member and the pedal connecting member and absorbs vibration from the master cylinder, and the rod In the pedal vibration absorber having a nut for fixing the intermediate member, the rod is connected to the tubular portion, and the flange is disposed between the tubular portion and the vibration absorbing member. And a fixing member that has an outer diameter larger than the outer diameter of the cylindrical portion, is made of resin, covers the outer diameter of the cylindrical portion, and fixes the intermediate member to the pedal connecting member. Made of resin A cylindrical guide portion extending in the axial direction of the cylindrical portion, having a guide hole through which the cylindrical portion is inserted and guiding the cylindrical portion, and an outer diameter larger than the outer diameter of the guide portion A fixing portion that has a diameter and is disposed on the pedal connecting member side of the guide portion so as to cover the flange and to be assembled to the pedal connecting member; a clearance between the outer diameter of the cylindrical portion and the inner diameter of the fixing member And when the intermediate member rotates relative to the fixing member by a predetermined angle, the cylindrical member has an abutting surface with which the outer diameter of the cylindrical portion abuts at a plurality of locations on the inner diameter of the fixing member, A predetermined clearance is provided between the outer peripheral surface of the cylindrical portion and the inner peripheral surface of the guide portion, and between the outer peripheral surface of the flange and the inner peripheral surface of the fixed portion. The cylindrical part and the guide part Is that contact.
[0016]
According to the above-described means, the fixing member is made of resin, covers the outer diameter of the cylindrical portion, and the intermediate member is fixed to the pedal coupling member. For example, even if the intermediate member moves relative to the fixing member, Since the fixing member is made of resin, the occurrence of high-frequency abnormal noise in which metals contact each other is prevented by a simple configuration in which the intermediate member is covered with the fixing member and fixed to the pedal connecting member.
[0017]
Further, a clearance is formed between the outer diameter of the cylindrical portion and the inner diameter of the fixing member, and when the intermediate member rotates relative to the fixing member by a predetermined angle, the outer diameter of the cylindrical portion contacts at a plurality of locations. If the surface has the inner diameter of the fixing member, when fixing the rod to the intermediate member with a nut, the clearance is formed between the outer diameter of the cylindrical portion and the inner diameter of the fixing member. The intermediate member rotates relative to the fixed member, and the cylindrical portion of the intermediate member is brought together with the nut. As a result, the cylindrical portion of the intermediate member comes into contact with the contact surface of the fixing member fixed to the pedal connecting member at a plurality of locations, and double tightening of the nut and the intermediate member and the intermediate member and the fixing member can be performed. .
[0018]
Thus, as in the prior art, for example, the method of tightening the nut with the two-surface width provided on the outer periphery of the intermediate member fixed with a spanner or the like is not necessarily required. It can be attached to the actuating rod, improving workability during installation.
[0019]
In this case, the anti-rotation structure of the intermediate member and the fixed member is configured such that the intermediate member rotates relative to the fixed member and comes into surface contact at a plurality of locations, thereby concentrating stress on the contact surface. By avoiding it, it is possible to distribute the stress associated with the mounting.
[0020]
Further, when at least two sets of two-side widths are formed on the outer diameter of the cylindrical portion, the intermediate member can be fixed to the fixing member by the two-side widths regardless of the right-hand screw or the left-hand screw. is there.
[0021]
Furthermore, when the pedal connecting member is made of resin, and the fixing member is fixed to the pedal connecting member by welding or bonding, both the pedal connecting portion and the fixing member are made of resin, which can be reduced in weight and cost compared to metal. Is possible. Furthermore, the fixing of the pedal connecting member of the fixing member does not require metal processing, and can be fixed by cheap and simple welding or adhesion.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the configuration of the pedal vibration absorber 1. The pedal vibration absorbing device 1 shown here is disposed between a pedal (for example, a clutch pedal, a brake pedal, etc.) and a master cylinder (for example, a clutch master cylinder, a brake master cylinder, etc.) in a vehicle. Thus, the cushion member 9 is interposed in the middle of the power transmission between the master cylinder 10 and the pedal 2 for the vibration from the vibration source such as the engine, and the cushion member 9 absorbs the vibration.
[0023]
Thereby, the vibration from the vibration source is not transmitted to the pedal 2, and the pedal operation feeling during the pedal operation is improved. In the following description, the pedal vibration absorbing device 1 will be described as being disposed between a clutch pedal and a clutch master cylinder as an example.
[0024]
Accordingly, the pedal vibration absorbing device 1 will be described with reference to FIG. The pedal vibration absorbing device 1 includes a clevis 7 connected to the pedal 2, a sub rod 5 that has a flange 5c and is screwed to a rod 3 that operates a master cinder 10, and the sub rod 5 is fixed to a cup portion 7b of the clevis 7. A guide cover 6, a cushion member 9 disposed in the cup portion and sandwiched by the sub rod 5, and a nut 4 for fixing the rod 3 to the sub rod 5.
[0025]
The clevis 7 includes a pedal connecting portion 7a having a trapezoidal shape on the pedal mounting side (right side shown in FIG. 1), and a cup portion 7b having a recess 7c formed therein on the master cylinder side (left side shown in FIG. 1). The pedal connecting portion 7a and the cup portion 7b are integrally formed. The pedal 2 that performs the clutch operation is attached to the pedal connecting portion 7a by a connecting member such as a pin in the pedal mounting hole 7e. A projection 7d is formed at the center of the recess 7c of the cup portion 7b opposite to the pedal connecting portion 7a, and a cushion member 9 made of a rubber material such as EPDM is disposed around the projection 7d. The cushion member 9 has a hole 9a at the center, and the diameter of the hole 9a is smaller than the diameter of the protrusion 7d.
[0026]
On the other hand, a cylindrical sub-rod 5 made of metal (for example, carbon steel) is disposed on one side of the cushion member 9. The sub rod 6 has a cylindrical portion 5 a that is cylindrical in the axial direction, and a flange 5 c on one end surface in the axial direction that contacts the cushion member 9. The movement of one of the sub rods 5 in the axial direction is restricted by the guide cover 6, and the guide rod 6 is welded or bonded to the end of the cup portion 7 b with the cushion member 9 preliminarily compressed.
[0027]
In this state, the end surface of the sub rod 5 and the bottom of the cup portion 7b are parallel to each other and face each other. The cushion member 9 having the center hole 9 a is formed with a projection 5 e slightly larger than the center hole 9 a in the center of the end surface on the pedal side of the sub rod 5, and the projections 5 e and 7 d on both sides of the cushion member 9 are the center of the cushion member 9. The movement of the cushion member 9 in the radial direction is restricted by the protrusions 5e and 7d.
[0028]
That is, the protrusions 5e and 7d on both sides of the cushion member 9 are inserted into the center hole 9a of the cushion member 9 with a predetermined tightening margin, whereby the sub rod 5 is positioned in the radial direction with respect to the clevis 7. .
[0029]
The guide cover 6 that fixes the sub rod 5 to the clevis 7 and guides and restricts the movement of the sub rod in the axial direction is made of a strong resin (for example, 6,6 nylon, which is the same material as the clevis 7). Become. At the center of the sub-rod 5, there is a guide hole 6 a through which the cylindrical part 5 a in which the screw hole 5 c is formed is inserted, and a fixing part 6 c that covers the outer diameter of the flange 5 c is formed, and the outer diameter of the cup part 7 b of the clevis 7 Presents the same cylindrical shape. The guide cover 6 has a fixing portion 6c fitted into a recess 7f formed at the end of the cup portion 7b, and a contact surface between the recess 7f and the fixing portion 6c is welded or bonded.
[0030]
The rod 3 for operating the master cylinder 10 is connected to the pedal 2 with the pedal connecting portion 7a, and the length of the rod 3 with respect to the master cylinder 10 is such that the tip 3a of the rod 3 is screwed into the screw hole 5c of the sub rod 5. Is adjusted by the length screwed into the screw hole 5c. Then, after the position adjustment, the nut 4 is fitted from the tip 3 a of the rod 3 to the end surface of the sub rod 5 on the master cylinder side so that the position does not shift, and the nut 4 is fastened to the sub rod 5. This prevents fluctuations in the length of the rod 3.
[0031]
In the configuration described above, the sub rod 5 bends the cushion member 9 in the cup portion 7 b of the clevis 7, the cylindrical portion 5 a extends along the guide hole 6 a of the guide cover 6, and the sub rod 5 includes the cushion member 9. It can move by the amount of bending.
[0032]
Therefore, the present invention will be described. The outer diameter of the cylindrical portion 5a of the sub rod 5 has a petal shape as shown in FIG. In the outer shape of the sub-rod 5, two face widths 5d surrounded by two sets of parallel straight lines (two parallel straight lines having a distance L) are formed at eight locations on the outer peripheral surface of the cylindrical portion 5a. Between the adjacent two-surface widths 5d, a tear groove 5g having a concave shape is formed. The tear groove 5g is provided at the center of the adjacent two-surface width 5d of the sub rod 5 so that the apexes of adjacent contact surfaces 6d do not interfere with each other.
[0033]
On the other hand, the inner peripheral surface of the guide hole 6a is provided with a clearance 11 between the outer periphery of the cylindrical portion 5a and the guide hole 6a of the guide cover 6 in a state where the centers of the sub rod 5 and the guide cover 6 coincide. Yes. The clearance 11 allows the sub rod 5 to rotate relative to the guide cover 6 by a predetermined angle (for example, about 25 to 30 degrees). As a result, an abutting surface 6d is formed on the inner peripheral surface of the guide hole 6a so that the surface having the two-surface width 5d abuts by surface contact when rotating relative to each other. The two-sided width 5d and the contact surface 6d have a line-symmetric shape passing through the centers of the rod 3 and the sub rod 5 so that the rod 3 can be applied to a right-handed screw or a left-handed screw.
[0034]
Next, the operation in this embodiment will be described.
[0035]
In the configuration shown in FIG. 1, when the clutch pedal is depressed and the pedal 2 is operated, the pedal depression force is transmitted to the pedal vibration absorbing device 1 while being transmitted to the master cylinder 10. The pedal depression force transmitted to the pedal vibration absorbing device 1 is transmitted to the cushion member 9, elastically deforms the cushion member 9, then transmitted to the rod 3 via the sub rod 5, and then transmitted to the master cylinder 10. 10 operates to increase the hydraulic pressure that controls the clutch device.
[0036]
On the other hand, when the operation of the clutch pedal is lost and the pedal 2 is released, the master cylinder 10 is deactivated, the rod 3 is returned via a piston (not shown) in the master cylinder (moves leftward in FIG. 1), Clevis 7 is returned. In this case, the elastic deformation of the cushion member 9 returns to the initial state where the pedal operating force does not act.
[0037]
With the above configuration, the sub rod 5 on the master cylinder side and the clevis 7 on the clutch pedal side are connected via the cushion member 9 in the power transmission process. From this, the vibration transmission transmitted from the engine serving as the vibration source to the pedal 2 is absorbed by the cushion member 9, so that the vibration affecting the pedal operation feeling is effectively stopped by the cushion member 9. It is.
[0038]
Further, there are predetermined gaps between the outer peripheral surface of the cylindrical portion 5a of the sub rod 5 and the guide hole 6a of the guide cover 6, and the outer diameter of the flange 5c of the sub rod 5 and the inner peripheral surface of the fixing portion 6c covering the flange 5c. Clearance is provided. For this reason, for example, even when an eccentric load is applied due to the arc actuation of the clutch pedal, the cylindrical portion 5a of the sub rod 5 and the inner peripheral surface of the guide hole 6a of the guide cover 6 come into contact with each other. The ratio can be set large, and a high guide effect can be obtained.
[0039]
When the pedal vibration absorbing device 1 is attached to the rod 3, the rod 3 is adjusted to a predetermined length (see FIG. 2 (a)). Thereafter, when the nut 4 is tightened with a spanner or the like, the sub rod 5 is also rotated together with the nut 4. In this case, when the two-surface width 5d formed in the cylindrical portion 5a of the sub rod 5 rotates by a predetermined angle, the sub rod 5 contacts the guide contact surface 18 formed in the guide hole 6a, and the relative rotation of the sub rod 5 with respect to the guide cover 6 occurs. Is blocked.
[0040]
Therefore, when the rod 3 is fixed to the clevis 7, the nut 4 is tightened and the rod 3 is fixed to the clevis 7 even if the two-side width formed on the outer diameter of the sub rod 5 is not fixed with a spanner or the like. Therefore, workability when the pedal vibration absorbing device 1 is attached to the vehicle is improved.
[0041]
In the present embodiment, since the clevis 7 and the guide cover 6 fixed to the cup portion 7b of the clevis 7 are made of resin, the sub rod 5 made of metal moves in the axial direction when the pedal is operated, and the sub rod Even if the cylindrical portion 5a of the guide 5 and the guide hole 6a of the guide cover 6 come into contact with each other, the guide cover 6 is made of resin, so that it does not generate a characteristic high-frequency noise that occurs when metals contact each other. The reliability of the vibration absorbing device 1 is improved.
[0042]
Further, the contact surface 6d formed in the guide hole 6a is set at an angle so that the two-surface width 5d of the sub rod 5 is in surface contact with a plurality of surfaces (for example, four surfaces in the configuration of FIG. 2). Therefore, even if a rotational torque is applied by tightening the nut 4, the internal stress acting on the contact surface 6d of the guide hole 6a can be efficiently dispersed. For this reason, even if the guide cover 6 is made of resin, sufficient strength corresponding to the tightening torque of the nut 4 can be secured.
[0043]
In addition, the pedal vibration absorbing device 1 can be made extremely light by molding it with an integral resin up to the pedal connecting portion 7a to which the cup portion 7b of the clevis 7 and the pedal 2 are connected. it can.
[0044]
In the embodiment shown in FIG. 2, the sub-rod 5 has two sets of two-surface widths 5d and the two-surface widths 5d abut on the abutment surface 6d. The number of sets of surfaces with which the surface having a width of 5d abuts may be at least two or more. For example, as shown in FIG. L) Even if it is provided on the line surrounded by L) (for example, on the side of a regular hexagon) and fixed with the nut 4 as shown in FIG. The same effects as described above are obtained.
[0045]
【The invention's effect】
According to the first technical means, since the fixing member is made of resin and covers the intermediate member so as to fix the intermediate member to the pedal connecting member, even if the intermediate member moves relative to the fixing member, Since the fixing member is made of resin, the generation of high-frequency noise caused by contact between metals can be prevented by a simple configuration in which the intermediate member is covered with the fixing member and fixed to the pedal connecting member.
[0046]
In this case, if the intermediate member has a cylindrical shape with a flange, and the fixing member has a contact surface that contacts the cylindrical portion of the intermediate member, the pedal moves in an arc during operation and the buckling of the vibration absorbing device occurs. Even if this occurs, the contact surface that contacts the cylindrical portion can be set large, and the axial length of the vibration absorbing device can be reduced as compared with the conventional case. In this case, the cylindrical portion is guided by the contact surface, and a high guide effect can be obtained.
[0047]
Further, according to the second technical means, the fixing member is made of resin, covers the outer diameter of the cylindrical portion, and the intermediate member is fixed to the pedal connecting member. Even if it moves, the fixing member is made of resin, so that the generation of high-frequency noise caused by contact between metals can be prevented by a simple configuration in which the intermediate member is covered with the fixing member and fixed to the pedal connecting member.
[0048]
Further, a clearance is formed between the outer diameter of the cylindrical portion and the inner diameter of the fixing member, and when the intermediate member rotates relative to the fixing member by a predetermined angle, the outer diameter of the cylindrical portion contacts at a plurality of locations. If the surface has the inner diameter of the fixed member, when the rod is fixed to the intermediate member with a nut during mounting, the intermediate member rotates relative to the fixed member, and the cylindrical portion of the intermediate member is connected to the pedal. The abutment surface of the fixing member fixed to the member abuts at a plurality of locations, and double tightening of the nut and the intermediate member, and the intermediate member and the fixing member can be performed.
[0049]
Thus, as in the prior art, for example, the method of tightening the nut with the two-surface width provided on the outer periphery of the intermediate member fixed with a spanner or the like is not necessarily required. Attachment with the rod to be operated can be performed, and workability at the time of attachment is improved.
[0050]
In this case, the anti-rotation structure of the intermediate member and the fixed member is configured such that the intermediate member rotates relative to the fixed member and comes into surface contact at a plurality of locations, thereby concentrating stress on the contact surface. By avoiding this, the stress associated with mounting can be dispersed.
[0051]
Further, when at least two sets of two-surface widths are formed on the outer diameter of the cylindrical portion, the intermediate member can be fixed to the fixing member by the two-surface widths regardless of the right-hand screw or the left-hand screw.
[0052]
Furthermore, when the pedal connecting member is made of resin, and the fixing member is fixed to the pedal connecting member by welding or bonding, both the pedal connecting portion and the fixing member are made of resin, which can be reduced in weight and cost compared to metal. The fixing of the pedal connecting member of the fixing member does not require metal processing, and can be fixed by cheap and simple welding or adhesion.
[Brief description of the drawings]
FIG. 1 is a partial fragmentary sectional view showing a configuration of a pedal vibration absorber according to an embodiment of the present invention.
2A is a view showing a state before tightening a nut, and FIG. 2B is a view showing a state after tightening a nut in the AA cross section shown in FIG. 1;
3A and 3B show a modification of FIG. 2, in which FIG. 3A is a diagram showing a state before tightening a nut, and FIG. 3B is a diagram showing a state after tightening the nut.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pedal vibration absorber 2 Pedal 3 Rod 3a Tip 4 Nut 5 Sub rod (intermediate member)
5a Cylindrical part 5d Width across flats 6 Guide cover (fixing member)
6d Contact surface 7 Clevis (Pedal connecting member)
7a Pedal connecting portion 7b Cup portion 7c Recessed portion 9 Cushion member (vibration absorbing member)
10 Master cylinder

Claims (5)

マスタシリンダを作動させるペダルに連結されるペダル連結部材と、
フランジを有する筒状を呈し、前記ペダルに連動するロッドが接続される中間部材と、
該中間部材と前記ペダル連結部材との間に配設され、前記マスタシリンダからの振動を吸収する振動吸収部材とを備えたペダル振動吸収装置において、
前記中間部材は、前記ロッドの軸方向に延在されるとともに前記ロッドが接続される延在部と、前記延在部の外径よりも大きな外径を有すると共に前記延在部と前記振動吸収部材との間に配設されるフランジ部を備え、
樹脂より成り、前記中間部材に被さり、前記中間部材を前記ペダル連結部材に固定する固定部材を備え、
前記固定部材は、樹脂より成り、前記軸方向に延在され、前記延在部が挿通されるとともに前記延在部をガイドするガイド孔を有する筒状のガイド部と、前記ガイド部の外径よりも大きな外径を有すると共に前記ガイド部の前記ペダル連結部材側に配設されて前記ペダル連結部材に組み付けられる固定部を備え、
前記固定部材に、前記中間部材の前記延在部としての筒状部に当接する当接面を有した
ことを特徴とするペダル振動吸収装置。A pedal coupling member coupled to a pedal for operating the master cylinder;
An intermediate member that has a cylindrical shape with a flange and is connected to a rod that interlocks with the pedal;
In the pedal vibration absorbing device including the vibration absorbing member that is disposed between the intermediate member and the pedal connecting member and absorbs vibration from the master cylinder,
The intermediate member extends in the axial direction of the rod and has an extension portion to which the rod is connected , an outer diameter larger than an outer diameter of the extension portion, and the extension portion and the vibration absorbing member. A flange portion disposed between the member and
It is made of resin, covers the intermediate member, and includes a fixing member that fixes the intermediate member to the pedal connecting member,
The fixing member is made of resin, extends in the axial direction, has a cylindrical guide portion having a guide hole through which the extension portion is inserted and guides the extension portion, and an outer diameter of the guide portion. A fixed portion that has a larger outer diameter and is disposed on the pedal connecting member side of the guide portion and is assembled to the pedal connecting member;
The pedal vibration absorbing device according to claim 1, wherein the fixing member has a contact surface that contacts the cylindrical portion as the extending portion of the intermediate member . マスタシリンダを作動させるペダルに連結されるペダル連結部材と、A pedal coupling member coupled to a pedal for operating the master cylinder;
筒状部とフランジとを有し、前記ペダルに連動するロッドが螺合する中間部材と、An intermediate member having a tubular portion and a flange, and a rod interlocking with the pedal is screwed;
該中間部材と前記ペダル連結部材との間に配設され、前記マスタシリンダからの振動を吸収する振動吸収部材と、A vibration absorbing member that is disposed between the intermediate member and the pedal connecting member and absorbs vibration from the master cylinder;
前記ロッドと前記中間部材とを固定するナットとを備えたペダル振動吸収装置において、In the pedal vibration absorber having a nut for fixing the rod and the intermediate member,
前記筒状部には前記ロッドが接続され、前記フランジは前記筒状部と前記振動吸収部材との間に配設されるとともに前記筒状部の外径よりも大きな外径を有し、The rod is connected to the tubular portion, the flange is disposed between the tubular portion and the vibration absorbing member and has an outer diameter larger than the outer diameter of the tubular portion,
樹脂より成り、前記筒状部の外径に被さり、前記中間部材を前記ペダル連結部材に固定する固定部材を備え、It is made of resin, covers the outer diameter of the cylindrical portion, and includes a fixing member that fixes the intermediate member to the pedal connecting member,
前記固定部材は、樹脂より成り、前記筒状部の軸方向に延在され、前記筒状部が挿通されるとともに前記筒状部をガイドするガイド孔を有する筒状のガイド部と、前記ガイド部の外径よりも大きな外径を有すると共に前記ガイド部の前記ペダル連結部材側に配設されて前記フランジに被さり前記ペダル連結部材に組み付けられる固定部を備え、The fixing member is made of resin, extends in the axial direction of the cylindrical portion, has a cylindrical guide portion through which the cylindrical portion is inserted and has a guide hole for guiding the cylindrical portion, and the guide A fixed portion that has an outer diameter larger than the outer diameter of the portion and is disposed on the pedal connecting member side of the guide portion so as to cover the flange and be assembled to the pedal connecting member;
前記筒状部の外径と前記固定部材の内径にはクリアランスが形成され、前記固定部材に対して前記中間部材が所定角度だけ相対回転した場合、前記筒状部の外径が複数箇所で当接する当接面を、前記固定部材の内径に有し、A clearance is formed between the outer diameter of the cylindrical portion and the inner diameter of the fixing member. When the intermediate member rotates relative to the fixing member by a predetermined angle, the outer diameter of the cylindrical portion is applied at a plurality of locations. Having a contact surface in contact with the inner diameter of the fixing member;
前記筒状部の外周面と前記ガイド部の内周面との間、および前記フランジの外周面と前記固定部の内周面との間には所定のクリアランスが設けられ、前記ペダルの作動に伴って前記筒状部と前記ガイド部が当接するPredetermined clearances are provided between the outer peripheral surface of the cylindrical portion and the inner peripheral surface of the guide portion, and between the outer peripheral surface of the flange and the inner peripheral surface of the fixing portion, and the pedal is operated. Along with this, the tubular portion and the guide portion come into contact with each other.
ことを特徴とするペダル振動吸収装置。A pedal vibration absorber characterized by that. 前記円筒部の外径には、二面幅が少なくとも２組形成されることを特徴とする請求項２に記載のペダル振動吸収装置。The pedal vibration absorber according to claim 2, wherein at least two sets of two-side widths are formed on the outer diameter of the cylindrical portion. 前記ペダル連結部材は樹脂より成り、前記固定部材は前記ペダル連結部材に溶着または接着により固定されることを特徴とする請求項１乃至請求項３に記載のペダル振動吸収装置。The pedal vibration absorbing device according to claim 1, wherein the pedal connecting member is made of resin, and the fixing member is fixed to the pedal connecting member by welding or adhesion. マスタシリンダを作動させるペダルに連結されるペダル連結部材と、A pedal coupling member coupled to a pedal for operating the master cylinder;
フランジと、前記フランジよりも小径の筒状部とを有し、前記ペダルに連動するロッドが前記筒状部に接続される中間部材と、An intermediate member having a flange and a cylindrical portion having a smaller diameter than the flange, and a rod coupled to the pedal connected to the cylindrical portion;
前記中間部材と前記ペダル連結部材との間に配設され、前記マスタシリンダからの振動を吸収する振動吸収部材とを備えたペダル振動吸収装置において、In the pedal vibration absorbing device including the vibration absorbing member that is disposed between the intermediate member and the pedal connecting member and absorbs vibration from the master cylinder,
樹脂より成り、前記中間部材に被さり、前記中間部材を前記ペダル連結部材に固定する固定部材を備え、It is made of resin, covers the intermediate member, and includes a fixing member that fixes the intermediate member to the pedal connecting member,
前記固定部材は、樹脂より成り、前記筒状部の軸方向に延在され、前記筒状部が挿通されるとともに前記筒状部をガイドするガイド孔を有する筒状のガイド部と、前記ガイド部の外径よりも大きな外径を有すると共に前記ガイド部の前記ペダル連結部材側に配設されて前記ペダル連結部材に組み付けられる固定部を備え、The fixing member is made of resin, extends in the axial direction of the cylindrical portion, has a cylindrical guide portion through which the cylindrical portion is inserted and has a guide hole for guiding the cylindrical portion, and the guide A fixed portion that has an outer diameter larger than the outer diameter of the portion and is disposed on the pedal connecting member side of the guide portion and is assembled to the pedal connecting member;
前記固定部材は前記中間部材の前記筒状部に当接する当接面を有し、The fixing member has a contact surface that contacts the cylindrical portion of the intermediate member,
前記振動吸収部材は前記軸方向に延在される孔を有し、The vibration absorbing member has a hole extending in the axial direction,
前記中間部材は前記振動吸収部材の前記孔に入る突起を有し、The intermediate member has a protrusion that enters the hole of the vibration absorbing member;
前記ガイド孔の軸長は前記突起の軸長よりも長くされているThe axial length of the guide hole is longer than the axial length of the protrusion.
ことを特徴とするペダル振動吸収装置。A pedal vibration absorber characterized by that.
JP2002080746A 2002-03-22 2002-03-22 Pedal vibration absorber Expired - Lifetime JP4207444B2 (en)

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US3302481A (en) * 1964-09-24 1967-02-07 Bendix Corp Brake control means
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DE10049913A1 (en) * 1999-10-18 2001-04-19 Luk Lamellen & Kupplungsbau Master cylinder for a clutch or brake mechanism of a motor vehicle comprises an axially dispaceable piston and its sealing means which are rotated relative to one another when the cylinder is operated

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