JPH05332409A - Autotensioner - Google Patents
AutotensionerInfo
- Publication number
- JPH05332409A JPH05332409A JP4138493A JP13849392A JPH05332409A JP H05332409 A JPH05332409 A JP H05332409A JP 4138493 A JP4138493 A JP 4138493A JP 13849392 A JP13849392 A JP 13849392A JP H05332409 A JPH05332409 A JP H05332409A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- pulley
- wedge
- shaped space
- tension
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes or chains
- F16H7/0829—Means for varying tension of belts, ropes or chains with vibration damping means
- F16H2007/084—Means for varying tension of belts, ropes or chains with vibration damping means having vibration damping characteristics dependent on the moving direction of the tensioner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes or chains
- F16H2007/0842—Mounting or support of tensioner
- F16H2007/0844—Mounting elements essentially within boundaries of final output members
Landscapes
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、自動車エンジンのカ
ム軸駆動用タイミングベルト等のベルトの張力を一定に
保持するオートテンショナに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic tensioner which maintains a constant tension of a belt such as a timing belt for driving a cam shaft of an automobile engine.
【０００２】[0002]
【従来の技術】自動車エンジンのベルトの張力を一定に
保持するオートテンショナとして実開平１−６９９４９
号公報に記載されたものが従来から知られている。2. Description of the Related Art As an auto tensioner for keeping the tension of a belt of an automobile engine constant, it is used as an automatic tensioner 1-69949.
The one described in the publication is conventionally known.
【０００３】上記オートテンショナにおいては、揺動自
在に支持されたブラケットにプーリを支持するプーリ支
持体を取付け、このプーリ支持体の底壁に形成した長孔
にボルトを挿入し、このボルトの外側に嵌合した一対の
摩擦板で上記底壁を挾み、一方の摩擦板を圧縮コイルば
ねにより底壁に押し付け、一対の摩擦板と底壁の接触部
に作用する摩擦抵抗によってプーリの揺動を減衰し、か
つベルトの振動を低減させ、上記ブラケットに張力調整
ばねのばね力を付与してプーリをベルトに押し付け、ベ
ルトの張力を一定に保持しようとしている。In the above automatic tensioner, a pulley support for supporting the pulley is attached to a bracket which is swingably supported, a bolt is inserted into an elongated hole formed in a bottom wall of the pulley support, and the outside of the bolt is attached. The bottom wall is sandwiched by a pair of friction plates fitted to each other, one of the friction plates is pressed against the bottom wall by a compression coil spring, and the pulley swings due to the friction resistance acting on the contact portion between the pair of friction plates and the bottom wall. To reduce the vibration of the belt and apply the spring force of the tension adjusting spring to the bracket to press the pulley against the belt to keep the tension of the belt constant.
【０００４】[0004]
【発明が解決しようとする課題】ところで、上記オート
テンショナにおいては、振動の減衰力を大きくしようと
すれば、圧縮コイルばねの押圧力や摩擦面の摩擦係数を
大きくしなければならず、押圧力の増大は圧縮コイルば
ねとして外径の大きい、長さの長いものを用いる必要が
あるため、オートテンショナが大型化する問題が生じ
る。一方、摩擦係数の増大は限度があり、ベルトの変動
荷重が大きい領域ではプーリの振動が大きくなり、ベル
トの振動や騒音が大きくなる不具合が生じる。By the way, in the above-mentioned auto tensioner, in order to increase the vibration damping force, the pressing force of the compression coil spring and the friction coefficient of the friction surface must be increased. Is required to use a compression coil spring having a large outer diameter and a long length, which causes a problem of increasing the size of the auto tensioner. On the other hand, there is a limit to the increase of the friction coefficient, and in a region where the fluctuating load of the belt is large, the vibration of the pulley becomes large, and the vibration and noise of the belt become large.
【０００５】また、上記オートテンショナにおいては、
摩擦板と底壁の接触部に作用する摩擦抵抗は、プーリの
いずれの揺動方向にも同様に作用する所謂両方向性ダン
パであるため、摩擦抵抗を大き目に設定すると、エンジ
ンに温度や回転数の変化に伴なうベルトの張力変化を適
切に吸収することができない。また、低温始動時にベル
トが急激に弛んだ場合、ベルトの張力を瞬時に調整する
ことができず、ベルトの振動によって騒音や歯飛びを生
じる問題が生じ、逆に、摩擦抵抗を小さ目に設定する
と、プーリおよびベルトが振動し易くなり、相反する問
題からチューニングが困難であり、オートテンショナに
必要な機能を十分に発揮させることができない。Further, in the above-mentioned auto tensioner,
The frictional resistance that acts on the contact part between the friction plate and the bottom wall is a so-called bidirectional damper that also acts in any swinging direction of the pulley. Therefore, if the frictional resistance is set to a large value, the engine temperature and rotation speed will increase. It is not possible to properly absorb the change in the tension of the belt due to the change. Also, if the belt suddenly sags at low temperature start, the tension of the belt cannot be adjusted instantaneously, which causes problems such as noise and tooth skipping due to vibration of the belt. Conversely, if the friction resistance is set to a small value. However, the pulley and the belt are likely to vibrate, and tuning is difficult due to conflicting problems, and the functions required for the auto tensioner cannot be fully exerted.
【０００６】この発明は上記従来の問題点を解決し、ベ
ルトに張力を付与するプーリをベルトの張力変化に対し
て適切に追従させるようにしてベルト張力を一定に保
ち、騒音の発生およびベルトの歯飛びを防止することを
技術的課題としている。The present invention solves the above-mentioned problems of the prior art, and keeps the belt tension constant by appropriately causing the pulley for applying tension to the belt to follow the change in the tension of the belt, thereby generating noise and reducing the belt tension. The technical issue is to prevent tooth skipping.
【０００７】[0007]
【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、この発明においては、固定軸と、その固定軸に偏
心位置が回転自在に支持されたプーリ支持体と、このプ
ーリ支持体に回転自在に支持されたプーリと、このプー
リがベルトを張る方向にプーリ支持体を揺動させる張力
付与手段とから成り、上記プーリ支持体に上記固定軸と
同軸上に配置される円筒部を設け、固定軸には上記円筒
部との間でくさび形空間を形成するカム面を設け、上記
くさび形空間はプーリ支持体がベルト弛み側に揺動する
方向に向けて狭くなり、このくさび形空間内にそのくさ
び形空間と略同形状の摩擦部材と、この摩擦部材をくさ
び形空間の狭小部に向けて押圧するばね部材とを組込ん
だ構成を採用したのである。In order to solve the above-mentioned problems, according to the present invention, a fixed shaft, a pulley support whose eccentric position is rotatably supported by the fixed shaft, and a pulley support A pulley that is rotatably supported and tension applying means that swings the pulley support in the direction in which the pulley stretches the belt. The pulley support is provided with a cylindrical portion that is arranged coaxially with the fixed shaft. , The fixed shaft is provided with a cam surface that forms a wedge-shaped space with the cylindrical portion, and the wedge-shaped space becomes narrower in the direction in which the pulley support swings toward the belt slack side. A friction member having substantially the same shape as the wedge-shaped space and a spring member for pressing the friction member toward the narrow portion of the wedge-shaped space are incorporated therein.
【０００８】ここで、上記カム面は、螺旋形状もしくは
偏心円弧形状として摩擦部材との周方向の全接触面でく
さび角が略一定となるようにしておくのがよい。Here, it is preferable that the cam surface is formed in a spiral shape or an eccentric arc shape so that the wedge angle is substantially constant on all contact surfaces in the circumferential direction with the friction member.
【０００９】[0009]
【作用】上記のように構成すれば、ベルトの張力が増大
し、そのベルトでプーリが押され、プーリ支持体がベル
トから離反する方向に揺動しようとすると、円筒部との
接触により摩擦部材がくさび形空間の狭小部に向けてさ
らに押し込まれて円筒部に対する摩擦力が増大し、プー
リ支持体のベルト弛み方向への揺動が抑制される。According to the above construction, when the tension of the belt increases, the pulley is pushed by the belt, and when the pulley support member tries to swing in the direction away from the belt, the friction member comes into contact with the cylindrical portion. It is further pushed toward the narrow portion of the wedge-shaped space to increase the frictional force to the cylindrical portion, and the swinging of the pulley support in the belt slack direction is suppressed.
【００１０】逆にベルトが弛みプーリ支持体がベルトを
押す方向に揺動しようとすると、円筒部との接触によっ
て摩擦部材がくさび形空間の広幅部に向けて押し出され
て円筒部に対する摩擦力が減少し、プーリ支持体はベル
ト張り側に素速く揺動してベルトの張力を一定に保つ。On the contrary, when the belt is slackened and the pulley support tries to swing in the direction of pushing the belt, the friction member is pushed out toward the wide portion of the wedge-shaped space due to the contact with the cylindrical portion, and the frictional force to the cylindrical portion is increased. The pulley support rapidly swings toward the belt tension side to keep the belt tension constant.
【００１１】[0011]
【実施例】以下、この発明の実施例を添付図面に基づい
て説明する。Embodiments of the present invention will be described below with reference to the accompanying drawings.
【００１２】図１乃至図３は、この発明に係るオートテ
ンショナを自動車エンジンのカム軸駆動用ベルトの張力
調整用に用いた例を示す。図示のように、固定軸１はボ
ルト２の締付けによってエンジンブロック３に固定され
ている。FIGS. 1 to 3 show an example in which the autotensioner according to the present invention is used for adjusting the tension of a camshaft driving belt of an automobile engine. As shown, the fixed shaft 1 is fixed to the engine block 3 by tightening bolts 2.
【００１３】固定軸１の外側にはすべり軸受４が嵌合さ
れ、そのすべり軸受４の外側にプーリ支持体５が嵌合さ
れている。プーリ支持体５は外径面の軸心に対する偏心
位置が回転自在に支持されている。A sliding bearing 4 is fitted on the outer side of the fixed shaft 1, and a pulley support 5 is fitted on the outer side of the sliding bearing 4. The pulley support 5 is rotatably supported at an eccentric position with respect to the axis of the outer diameter surface.
【００１４】プーリ支持体５には軸受６を介してプーリ
７が回転自在に支持されている。プーリ支持体５のエン
ジンブロック側の端部には円筒部８が設けられ、この円
筒部８は前記固定軸１と同軸上に位置している。円筒部
８の外側にはアーム９の一端部に設けた筒部１０が圧入
され、そのアーム９の他端部に連結した張力調整ばね１
１によってプーリ支持体５はベルト張り側に揺動され、
プーリ７がベルト１２に押し付けられている。A pulley 7 is rotatably supported on the pulley support 5 via a bearing 6. A cylindrical portion 8 is provided at an end of the pulley support 5 on the engine block side, and the cylindrical portion 8 is positioned coaxially with the fixed shaft 1. A cylindrical portion 10 provided at one end of an arm 9 is press-fitted to the outside of the cylindrical portion 8, and a tension adjusting spring 1 connected to the other end of the arm 9 is provided.
1, the pulley support 5 is swung to the belt tension side,
The pulley 7 is pressed against the belt 12.
【００１５】前記円筒部８の内側において固定軸１の外
周には複数のカム面１３が周方向に所要の間隔をおいて
設けられ、そのカム面１３と円筒部８の内面間にくさび
形空間１４が形成されている。A plurality of cam surfaces 13 are provided on the outer periphery of the fixed shaft 1 inside the cylindrical portion 8 at predetermined intervals in the circumferential direction, and a wedge-shaped space is provided between the cam surface 13 and the inner surface of the cylindrical portion 8. 14 is formed.
【００１６】くさび形空間１４はプーリ支持体５が弛み
側に揺動する方向に向けて狭くなり、そのくさび形空間
１４内にくさび形空間１４と同形状の摩擦部材１５と、
この摩擦部材１５をくさび形空間１４の狭小部に向けて
押圧するばね部材１６とが組込まれている。The wedge-shaped space 14 becomes narrower in the direction in which the pulley support 5 swings to the slack side, and the wedge-shaped space 14 has a friction member 15 having the same shape as that of the wedge-shaped space 14.
A spring member 16 for pressing the friction member 15 toward the narrow portion of the wedge-shaped space 14 is incorporated.
【００１７】ここで、カム面１３は螺旋形もしくは固定
軸１の軸心に対して偏心位置に中心を有する偏心円弧形
をなし、摩擦部材１５との周方向の全接触面でくさび角
αが略一定とされている。Here, the cam surface 13 has a spiral shape or an eccentric arc shape having a center at an eccentric position with respect to the axial center of the fixed shaft 1, and the wedge angle α at all contact surfaces with the friction member 15 in the circumferential direction. Is almost constant.
【００１８】上記の構成から成るオートテンショナにお
いて、ベルト１２の張力が増大し、そのベルト１２でプ
ーリ７が押されると、プーリ支持体５が固定軸１を中心
に図１の矢印で示すベルト弛み側に揺動しようとする。
このとき、摩擦部材１５は円筒部８との接触によってく
さび形空間１４の狭小部に向けてさらに押し込まれて摩
擦部材１５と円筒部８の接触部に作用する摩擦力が増大
し、プーリ支持体５の揺動が抑制される。When the tension of the belt 12 is increased and the pulley 7 is pushed by the belt 12 in the auto tensioner having the above-mentioned structure, the pulley support 5 is loosened around the fixed shaft 1 as shown by the arrow in FIG. Try to swing to the side.
At this time, the friction member 15 is further pushed toward the narrow portion of the wedge-shaped space 14 due to the contact with the cylindrical portion 8, and the frictional force acting on the contact portion between the friction member 15 and the cylindrical portion 8 is increased, so that the pulley supporting body is The swing of 5 is suppressed.
【００１９】ここで、くさび空間１４のくさび角αはす
べり条件に設定されているため、ベルト１２がプーリ７
を押す押圧力がさらに増大すると、摩擦部材１５と円筒
部８の接触部に作用する摩擦力と張力調整ばね１１のば
ね力の合力を越えた分だけプーリ支持体５はベルト弛み
側に揺動する。Here, since the wedge angle α of the wedge space 14 is set to the slip condition, the belt 12 is attached to the pulley 7
When the pressing force that pushes is further increased, the pulley support 5 swings toward the belt slack side by an amount exceeding the total force of the frictional force acting on the contact portion between the friction member 15 and the cylindrical portion 8 and the spring force of the tension adjusting spring 11. To do.
【００２０】一方、ベルト１２の張力が減少すると、張
力調整ばね１１のばね力によってプーリ支持体５はベル
ト張り側に揺動しようとする。このとき、摩擦部材１５
は円筒部８との接触によってくさび形空間１４の広幅部
に向けて押し出されて円筒部８と摩擦部材１５の接触部
における摩擦抵抗が減少する。このため、プーリ支持体
５はベルト張り側に速やかに揺動する。On the other hand, when the tension of the belt 12 decreases, the spring force of the tension adjusting spring 11 causes the pulley support 5 to swing toward the belt tension side. At this time, the friction member 15
Is pushed toward the wide portion of the wedge-shaped space 14 by contact with the cylindrical portion 8, and the frictional resistance at the contact portion between the cylindrical portion 8 and the friction member 15 is reduced. For this reason, the pulley support 5 quickly swings to the belt tension side.
【００２１】このように、プーリ支持体５の揺動抵抗
は、ベルト弛み側に大きく、ベルト張り側には小さい、
所謂一方向性ダンパの特性を有し、これにより、ベルト
１２の張力変動に対するプーリ７の振動及びベルト１２
の振動を抑制しながら過大な張力増加や張力の減少には
プーリ７が揺動してベルト１２の張力を一定に保ち、オ
ートテンショナとしての機能を発揮する。Thus, the swing resistance of the pulley support 5 is large on the belt slack side and small on the belt tension side.
It has a characteristic of a so-called unidirectional damper, which allows the vibration of the pulley 7 and the belt 12 to change in the tension of the belt 12.
When the tension is excessively increased or decreased while suppressing the vibration of No. 2, the pulley 7 swings to keep the tension of the belt 12 constant, and the function of the automatic tensioner is exhibited.
【００２２】なお、ベルト張力の減少時には、プーリ７
は速やかにベルト張り側に揺動し、張力変動の最小値と
張力調整ばね１１のばね力とほぼ釣り合うように作用す
るので、エンジンの加減速時の張力変化にも良好に追従
し、低温始動時のベルト１２の急激な弛みを速やかに解
消する。When the belt tension is reduced, the pulley 7
Swiftly swings to the belt tension side, and acts so as to approximately balance the minimum value of the tension fluctuation and the spring force of the tension adjusting spring 11, so that the tension change during acceleration / deceleration of the engine can be well followed and the cold start The sudden looseness of the belt 12 at that time is quickly eliminated.
【００２３】[0023]
【発明の効果】以上のように、この発明に係るオートテ
ンショナにおいては、ベルトの張力を調整するプーリ支
持体の揺動に方向性のある摩擦抵抗を付与したことによ
り、プーリおよびベルトの振動を抑制しながら、ベルト
の張力変化に対してプーリを適切に追従させることがで
き、ベルトの張力を常に一定に保ち、ベルト寿命の向上
と低騒音を実現できる。As described above, in the autotensioner according to the present invention, since the directional vibration resistance is applied to the swing of the pulley support for adjusting the tension of the belt, the vibration of the pulley and the belt is prevented. While restraining, the pulley can be made to properly follow the belt tension change, the belt tension can always be kept constant, and the belt life can be improved and low noise can be realized.
【００２４】また、低温始動時のベルトの弛みを速やか
に解消し、ベルトの歯飛びや騒音を防止することができ
る。Further, the slack of the belt at the time of cold start can be promptly eliminated, and the tooth jumping and noise of the belt can be prevented.
【００２５】さらに、くさび形空間のくさび角を周方向
の全体で一定としたことにより、摩擦面の面圧が小さく
なり、摩擦面の摩耗が少なく、摩擦特性が安定し、摩擦
面が少々摩耗しても初期の押圧状態を維持でき、耐久
性、信頼性に優れたオートテンショナを提供することが
できる。また、部品点数が少なく、小型、軽量化と低コ
スト化とを図ることができる。Further, by making the wedge angle of the wedge-shaped space constant in the entire circumferential direction, the surface pressure of the friction surface is reduced, the friction surface is less worn, the friction characteristics are stable, and the friction surface is slightly worn. Even if the initial pressing state is maintained, it is possible to provide an auto tensioner having excellent durability and reliability. In addition, the number of parts is small, and it is possible to achieve size reduction, weight reduction, and cost reduction.
【図１】この発明に係るオートテンショナの一実施例を
示す正面図FIG. 1 is a front view showing an embodiment of an auto tensioner according to the present invention.
【図２】同上の縦断側面図FIG. 2 is a vertical sectional side view of the above.
【図３】図２のIII −III 線に沿った断面図FIG. 3 is a sectional view taken along line III-III in FIG.
１ 固定軸 ５ プーリ支持体 ７ プーリ ８ 円筒部 １３ カム面 １４ くさび形空間 １５ 摩擦部材 １６ ばね部材 DESCRIPTION OF SYMBOLS 1 Fixed shaft 5 Pulley support 7 Pulley 8 Cylindrical part 13 Cam surface 14 Wedge-shaped space 15 Friction member 16 Spring member
Claims (2)
自在に支持されたプーリ支持体と、このプーリ支持体に
回転自在に支持されたプーリと、このプーリがベルトを
張る方向にプーリ支持体を揺動させる張力付与手段とか
ら成り、上記プーリ支持体に上記固定軸と同軸上に配置
される円筒部を設け、固定軸には上記円筒部との間でく
さび形空間を形成するカム面を設け、上記くさび形空間
はプーリ支持体がベルト弛み側に揺動する方向に向けて
狭くなり、このくさび形空間内にそのくさび形空間と略
同形状の摩擦部材と、この摩擦部材をくさび形空間の狭
小部に向けて押圧するばね部材とを組込んだことを特徴
とするオートテンショナ。1. A fixed shaft, a pulley support body whose eccentric position is rotatably supported by the fixed shaft, a pulley rotatably supported by the pulley support body, and a pulley in the direction in which the pulley stretches a belt. The pulley supporting body is provided with a cylindrical portion arranged coaxially with the fixed shaft, and the fixed shaft forms a wedge-shaped space with the cylindrical portion. A cam surface is provided, and the wedge-shaped space becomes narrower in the direction in which the pulley support body swings toward the belt slack side. Within the wedge-shaped space, a friction member having substantially the same shape as the wedge-shaped space, and this friction member. An automatic tensioner, which incorporates a spring member for pressing the wedge toward a narrow portion of the wedge-shaped space.
弧形状をなし、摩擦部材との周方向の全接触面でくさび
角が略一定とされていることを特徴とする請求項１に記
載のオートテンショナ。2. The cam surface has a spiral shape or an eccentric arc shape, and a wedge angle is substantially constant on all circumferential contact surfaces with the friction member. Auto tensioner.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4138493A JPH05332409A (en) | 1992-05-29 | 1992-05-29 | Autotensioner |
| DE4317949A DE4317949C2 (en) | 1992-05-29 | 1993-05-28 | Automatic tensioning device |
| FR939306425A FR2691776B1 (en) | 1992-05-29 | 1993-05-28 | Self-tensioning. |
| US08/068,548 US5328415A (en) | 1992-05-29 | 1993-05-28 | Autotensioner |
| KR1019930009432A KR970008227B1 (en) | 1992-05-29 | 1993-05-29 | Autotensioner |
| GB9311226A GB2267325B (en) | 1992-05-29 | 1993-06-01 | Autotensioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4138493A JPH05332409A (en) | 1992-05-29 | 1992-05-29 | Autotensioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05332409A true JPH05332409A (en) | 1993-12-14 |
Family
ID=15223402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4138493A Pending JPH05332409A (en) | 1992-05-29 | 1992-05-29 | Autotensioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05332409A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003054419A3 (en) * | 2001-12-20 | 2004-03-04 | Dayco Products Llc | Unidirectional motion asymmetrically damped tensioner |
| EP1574736A1 (en) * | 2004-03-09 | 2005-09-14 | Ntn Corporation | One-way clutch |
| WO2006061063A1 (en) * | 2004-12-07 | 2006-06-15 | Schaeffler Kg | Tensioning device |
| US7229374B2 (en) | 2001-12-20 | 2007-06-12 | Dayco Products, Llc | Dual friction surface asymmetric damped tensioner |
| KR101908041B1 (en) * | 2017-06-23 | 2018-10-16 | 제이스테판 주식회사 | Cutting force controlled clutch and printer with same |
| CN114673767A (en) * | 2022-03-30 | 2022-06-28 | 东风汽车集团股份有限公司 | A tensioner, a front-end wheel train system, and a vehicle |
| CN117249212A (en) * | 2023-09-21 | 2023-12-19 | 莱顿汽车部件（苏州）有限公司 | An automatic tensioner with automatically adjustable friction damping |
-
1992
- 1992-05-29 JP JP4138493A patent/JPH05332409A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003054419A3 (en) * | 2001-12-20 | 2004-03-04 | Dayco Products Llc | Unidirectional motion asymmetrically damped tensioner |
| US6863631B2 (en) * | 2001-12-20 | 2005-03-08 | Dayco Products, Llc | Unidirectional motion asymmetric damped tensioner |
| US7229374B2 (en) | 2001-12-20 | 2007-06-12 | Dayco Products, Llc | Dual friction surface asymmetric damped tensioner |
| EP1574736A1 (en) * | 2004-03-09 | 2005-09-14 | Ntn Corporation | One-way clutch |
| US7267213B2 (en) | 2004-03-09 | 2007-09-11 | Ntt Corporation | One-way clutch |
| WO2006061063A1 (en) * | 2004-12-07 | 2006-06-15 | Schaeffler Kg | Tensioning device |
| KR101908041B1 (en) * | 2017-06-23 | 2018-10-16 | 제이스테판 주식회사 | Cutting force controlled clutch and printer with same |
| CN114673767A (en) * | 2022-03-30 | 2022-06-28 | 东风汽车集团股份有限公司 | A tensioner, a front-end wheel train system, and a vehicle |
| CN117249212A (en) * | 2023-09-21 | 2023-12-19 | 莱顿汽车部件（苏州）有限公司 | An automatic tensioner with automatically adjustable friction damping |
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