JPH0783295A - Auto tensioner - Google Patents
Auto tensionerInfo
- Publication number
- JPH0783295A JPH0783295A JP23268093A JP23268093A JPH0783295A JP H0783295 A JPH0783295 A JP H0783295A JP 23268093 A JP23268093 A JP 23268093A JP 23268093 A JP23268093 A JP 23268093A JP H0783295 A JPH0783295 A JP H0783295A
- Authority
- JP
- Japan
- Prior art keywords
- spring support
- spring
- boss
- force
- boss portion
- 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.)
- Withdrawn
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
- F16H2007/0802—Actuators for final output members
- F16H2007/081—Torsion springs
-
- 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
Landscapes
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、オートテンショナ、特
に自動車エンジンによる補機類駆動のためのVベルト等
に所定の張力を付与しかつ該張力の変動に応じてダンピ
ング力を自動的に変化させるようにしたオートテンショ
ナに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides an automatic tensioner, in particular, a predetermined tension to a V-belt or the like for driving an auxiliary machine by an automobile engine, and automatically changes a damping force in accordance with a change in the tension. Regarding the automatic tensioner that was made to let.
【0002】[0002]
【従来の技術】例えば米国特許第4473362号明細
書及び図面に記載されるように、駆動プーリと複数の従
動プーリとの間に巻き掛けられたベルトのプーリ間スパ
ンを押圧して、駆動プーリの回転力を全ての従動プーリ
に伝達させるためにオートテンショナが用いられること
は知られている。2. Description of the Related Art As described in, for example, U.S. Pat. No. 4,473,362 and drawings, the span between pulleys of a belt wound between a drive pulley and a plurality of driven pulleys is pressed to press the drive pulley. It is known that autotensioners are used to transfer rotational force to all driven pulleys.
【0003】このようなオートテンショナは、図3及び
図4に示すように、例えば自動車エンジン等の固定体に
固定可能な固定部材1に回動部材2が回動可能に支持さ
れ、上記固定部材1と回動部材2との間に、該回動部材
2を固定部材1に対し所定方向に回動付勢するねじりコ
イルばね3が介装されている。In such an automatic tensioner, as shown in FIGS. 3 and 4, a rotary member 2 is rotatably supported by a fixed member 1 which can be fixed to a fixed body such as an automobile engine, and the fixed member is fixed. A torsion coil spring 3 is interposed between the rotary member 2 and the rotary member 2 to bias the rotary member 2 in a predetermined direction with respect to the fixed member 1.
【0004】上記固定部材1は、有底筒状のリヤカップ
部1aと、該リヤカップ部1aの底部中央から軸心方向
に延びる円柱状の軸部1bを有し、上記リヤカップ部1
aの壁部には、該壁部を半径方向に貫通する基端側係止
孔1cが形成されている。The fixed member 1 has a bottomed cylindrical rear cup portion 1a and a cylindrical shaft portion 1b extending axially from the center of the bottom portion of the rear cup portion 1a.
A base end side locking hole 1c penetrating the wall portion in the radial direction is formed in the wall portion a.
【0005】一方、上記回動部材2は、開口部が上記リ
ヤカップ部1aの開口部と対向するフロントカップ部2
aと、該フロントカップ部2aの底部中央から軸心方向
に延び、かつ固定部材1の軸部1bにその先端側から外
嵌合されるボス部2bと、上記フロントカップ部2aの
外周に突設され、先端にボス部2bの軸心と平行な軸心
でプーリ4が回転自在に支持されたアーム部2cとを有
し、上記ボス部2bにおいて固定部材1に回動可能に支
持される。上記プーリ4には、例えば自動車エンジンに
おける補機類伝動用のVベルト等のような所定の張力を
付与すべきベルトが巻き掛けられるようになされてい
る。上記フロントカップ部2aの壁部には、該壁部を半
径方向に貫通する先端側係止孔2dが形成されている。On the other hand, the rotating member 2 has a front cup portion 2 whose opening faces the opening of the rear cup portion 1a.
a, a boss portion 2b extending in the axial direction from the center of the bottom portion of the front cup portion 2a, and externally fitted to the shaft portion 1b of the fixing member 1 from its tip end side, and a boss portion 2b protruding on the outer periphery of the front cup portion 2a. It has an arm portion 2c which is provided at the tip and has a pulley 4 rotatably supported by an axis parallel to the axis of the boss 2b, and is rotatably supported by the fixing member 1 at the boss 2b. . A belt to which a predetermined tension is applied, such as a V-belt for transmitting auxiliary machinery in an automobile engine, is wound around the pulley 4. A front end side locking hole 2d is formed in the wall portion of the front cup portion 2a so as to penetrate the wall portion in the radial direction.
【0006】上記ねじりコイルばね3は、本体が左巻き
で、基端側及び先端側の各端部3a,3bが何れも本体
から半径方向外方に向けて突出する形状とされている。
上記基端側端部3aは固定部材1のリヤカップ部1a壁
部における基端側係止孔1cに、また先端側端部3bは
回動部材2のフロントカップ部2a周壁における先端側
係止孔2dにそれぞれ半径方向に貫通して係止されてお
り、このことで各端部3a,3bは各々の係止孔1c,
2dにより周方向の移動が規制されている。そして、ね
じりコイルばね3は、両端部3a,3bが係止された状
態で本体が拡径する方向に動作することにより、回動部
材2を図4の反時計回り方向に回動付勢するようになさ
れている。The main body of the torsion coil spring 3 is left-handed, and each of the end portions 3a and 3b on the base end side and the tip end side protrudes radially outward from the main body.
The proximal end 3a is a proximal locking hole 1c in the wall of the rear cup 1a of the fixing member 1, and the distal end 3b is a distal locking hole in the peripheral wall of the front cup 2a of the rotating member 2. 2d are respectively radially penetrated and locked, so that each end 3a, 3b is locked in each locking hole 1c,
Movement in the circumferential direction is restricted by 2d. The torsion coil spring 3 operates in the direction in which the main body expands with both ends 3a and 3b locked, thereby urging the rotating member 2 to rotate counterclockwise in FIG. It is done like this.
【0007】また、上記ねじりコイルばね3の基端側と
ボス部2bとの間には、筒状のスプリングサポート5が
介装され、このスプリングサポート5の内周面がボス部
2bの外周面に摺接可能とされている。スプリングサポ
ート5は、図5に示すように、ボス部2bの外側に位置
する筒状部5aと、該筒状部5aの基端側開口縁に連設
されリヤカップ部1aの底部表面に接する外向きフラン
ジ5bとを備える。そして、外向きフランジ5bがねじ
りコイルばね3の押圧力でリヤカップ部1aの底部表面
に押付けられることにより、スプリングサポート5は固
定部材1側に固定される。また、この固定状態におい
て、フロントカップ部2aが図6の時計回り方向に回動
したとき、ねじりコイルばね3の本体が縮径すること
で、スプリングサポート5は締付けられてその内周面が
ボス部2bの外周面に圧接するようになり、このことで
もダンピング力が発生するようになされている。A cylindrical spring support 5 is interposed between the base end side of the torsion coil spring 3 and the boss portion 2b, and the inner peripheral surface of the spring support 5 is the outer peripheral surface of the boss portion 2b. It is possible to slide on. As shown in FIG. 5, the spring support 5 is provided with a tubular portion 5a located outside the boss portion 2b and an outer portion which is continuously provided on the proximal opening edge of the tubular portion 5a and which contacts the bottom surface of the rear cup portion 1a. And an orientation flange 5b. Then, the outward flange 5b is pressed against the bottom surface of the rear cup portion 1a by the pressing force of the torsion coil spring 3, whereby the spring support 5 is fixed to the fixing member 1 side. Further, in this fixed state, when the front cup portion 2a rotates in the clockwise direction in FIG. 6, the main body of the torsion coil spring 3 contracts, so that the spring support 5 is tightened and its inner peripheral surface is bossed. It comes into pressure contact with the outer peripheral surface of the portion 2b, and this also produces a damping force.
【0008】上記固定部材1又は回動部材2のうち、固
定部材1は合成樹脂で、また回動部材2はアルミ合金等
の金属でそれぞれ形成されている。そして、上記固定部
材1の軸部1b外周面と回動部材2のボス部2b内周面
とは、共に先端側が僅かながら小径となる断面テーパ状
に形成され、それらの間には合成樹脂からなる筒状ブッ
シュ6が介装されている。Of the fixing member 1 and the rotating member 2, the fixing member 1 is made of synthetic resin, and the rotating member 2 is made of metal such as aluminum alloy. The outer peripheral surface of the shaft portion 1b of the fixed member 1 and the inner peripheral surface of the boss portion 2b of the rotating member 2 are both formed in a tapered cross-section with a small diameter on the tip side, and a synthetic resin is provided between them. The tubular bush 6 is interposed.
【0009】上記軸部1bに外嵌合されたボス部2b
は、該軸部1bの先端に固定したプレート部材7により
抜止めされている。上記プレート部材7は金属製で円板
状をなし、その中央部には軸部1bに嵌着される孔が設
けられている。そして、上記プレート部材7のボス部2
b側には、該ボス部2bの先端面に摺接してそのスラス
ト荷重を受ける板状樹脂部材14が一体に接合されてい
る。A boss portion 2b externally fitted to the shaft portion 1b.
Are secured by a plate member 7 fixed to the tip of the shaft portion 1b. The plate member 7 is made of metal and has a disc shape, and a hole for fitting the shaft portion 1b is provided in the central portion thereof. Then, the boss portion 2 of the plate member 7
A plate-shaped resin member 14 that is in sliding contact with the tip surface of the boss portion 2b and receives the thrust load is integrally joined to the b side.
【0010】従って、オートテンショナのプーリ4にベ
ルトが巻き掛けられて、該オートテンショナにおける回
動部材2のボス部2b内周面と固定部材1の軸部1b
(ブッシュ6)外周面との間、及びボス部2b(ブッシ
ュ6)外周面とスプリングサポート5内周面との間に、
それぞれベルト力とねじりコイルばね3の付勢力とが合
わさってダンピング力が生じている状態において、上記
ベルトの張力が減少すると、ベルト力の減少により固定
部材1の回動部材2に対するダンピング力が小さくな
る。すると、回動部材2が回動し易くなってプーリ4の
ベルトに対する追随性が高くなり、このことでベルトの
張力低下を速やかに防止することができるようになる。
一方、ベルトの張りに対してはベルト力の増大により上
記ダンピング力も大きくなり、このことでプーリ4に大
きな抵抗力を付与してベルトのばたつきを防止すること
ができるようになる。Therefore, the belt is wound around the pulley 4 of the automatic tensioner, and the inner peripheral surface of the boss portion 2b of the rotating member 2 and the shaft portion 1b of the fixed member 1 in the automatic tensioner are wound.
Between the (bush 6) outer peripheral surface and between the boss portion 2b (bush 6) outer peripheral surface and the spring support 5 inner peripheral surface,
When the tension of the belt decreases in the state where the belt force and the urging force of the torsion coil spring 3 are combined to generate the damping force, the damping force of the fixed member 1 to the rotating member 2 decreases due to the decrease of the belt force. Become. Then, the rotating member 2 is easily rotated, and the followability of the pulley 4 with respect to the belt is increased, which makes it possible to quickly prevent the tension of the belt from being lowered.
On the other hand, with respect to the tension of the belt, the damping force is also increased due to the increase of the belt force, which makes it possible to apply a large resistance force to the pulley 4 and prevent the belt from fluttering.
【0011】[0011]
【発明が解決しようとする課題】ところが、ねじりコイ
ルばね3に捩じり力が作用して、巻径が減少しても、筒
状のスプリングサポート5は回動部材2のボス部2bの
径よりも大きく形成されていることから、それらの間に
はクリアランスが生じ、図6に示すように、スプリング
サポート5とボス部2bとは一部においてのみ接触し、
その結果スプリングサポート5のボス部2bへの押付け
力は上記接触部分の反力のみであった。また、巻径の減
少でスプリングサポート5を締め付けても、スプリング
サポート5の内周面とボス部2bの外周面との間に上述
した如くクリアランスがあるため、変形又は割れの発生
のおそれがある。However, even if the torsional force acts on the torsion coil spring 3 to reduce the winding diameter, the cylindrical spring support 5 has a diameter of the boss portion 2b of the rotating member 2. Since it is formed to be larger than the above, a clearance is generated between them, and as shown in FIG. 6, the spring support 5 and the boss portion 2b contact only partly,
As a result, the pressing force of the spring support 5 against the boss portion 2b was only the reaction force of the contact portion. Further, even if the spring support 5 is tightened by reducing the winding diameter, there is a possibility of deformation or cracking due to the clearance between the inner peripheral surface of the spring support 5 and the outer peripheral surface of the boss portion 2b as described above. .
【0012】本発明はかかる点に鑑みてなされたもの
で、スプリングサポートのボス部への押付け力を高める
と共に、スプリングサポートの変形又は割れを防止した
オートテンショナを提供するものである。The present invention has been made in view of the above circumstances, and provides an auto tensioner in which the pressing force of the spring support against the boss portion is enhanced and the spring support is prevented from being deformed or cracked.
【0013】[0013]
【課題を解決するための手段】本発明は、固定部材の軸
部に回動部材のボス部が回動可能に嵌合され、該ボス部
に、ベルトを押圧するプーリがボス部の軸心と平行な軸
心でアーム部材を介して回転自在に支承され、上記固定
部材と回動部材との間に、該回動部材を固定部材に対し
所定方向に回動付勢するねじりコイルばねがスプリング
サポートを介して介装され、上記回動部材の回動付勢力
により上記プーリにベルト押圧させて所定の張力を付与
し、かつ上記張力の変動に応じてダンピング力を変化さ
せるようにしたオートテンショナを前提とし、上記スプ
リングサポートが、軸線方向において分割された複数の
スプリング片を有する構成とする。According to the present invention, a boss portion of a rotating member is rotatably fitted to a shaft portion of a fixed member, and a pulley for pressing a belt is attached to the boss portion. A torsion coil spring that is rotatably supported by an arm member with an axis parallel to and that biases the rotating member in a predetermined direction with respect to the fixing member is provided between the fixing member and the rotating member. An automatic device that is interposed via a spring support, presses the belt against the pulley by the rotational urging force of the rotating member to apply a predetermined tension, and changes the damping force according to the fluctuation of the tension. Based on a tensioner, the spring support has a plurality of spring pieces divided in the axial direction.
【0014】[0014]
【作用】スプリングサポートは、軸線方向において分割
された、複数のスプリング片を有する分割構造であるの
で、ねじりコイルばねの巻径の減少でスプリングサポー
トが締付けられると、スプリングサポートの各スプリン
グ片内側面が回動部材のボス部外周面に接触し、スプリ
ングサポートのボス部への押付け力はスプリングサポー
ト全体によって付与されることとなり、スプリングサポ
ートのボス部への押付け力は高まる。そして、その高ま
った押付け力に対する反力だけでなく、ねじりコイルば
ねの締付け力も作用して、大きなダンピング力が得られ
る。Since the spring support has a split structure having a plurality of spring pieces that are split in the axial direction, when the spring support is tightened by reducing the winding diameter of the torsion coil spring, the inner surface of each spring piece of the spring support is reduced. Comes into contact with the outer peripheral surface of the boss portion of the rotating member, and the pressing force of the spring support to the boss portion is given by the entire spring support, so that the pressing force of the spring support to the boss portion is increased. Then, not only the reaction force against the increased pressing force but also the tightening force of the torsion coil spring acts to obtain a large damping force.
【0015】[0015]
【実施例】以下、本発明の実施例を図面に沿って詳細に
説明する。尚、本発明の実施例の基本構成は図3及ぶ図
4に示すものと同一であるので、同一の構成要素につい
ては同一の符号を用い、その詳細な説明を省略する。Embodiments of the present invention will now be described in detail with reference to the drawings. Since the basic structure of the embodiment of the present invention is the same as that shown in FIGS. 3 and 4, the same components are designated by the same reference numerals and detailed description thereof will be omitted.
【0016】ねじりコイルばね3のスプリングサポート
11が、図1に示すように、軸線方向において分割され
た複数のスプリング片11a,…を有し、該複数のスプ
リング片11a,…によって、固定部材1の軸部1aの
外周に位置する円筒状の筒状部11Aと、筒状部11A
の一端部に連設され半径方向外方に延びるフランジ部1
1Bとが構成されるようになっている。よって、スプリ
ングサポート11の各スプリング片11a,…は、ねじ
りコイルばね3の巻径の変化により半径方向において変
化することになる。As shown in FIG. 1, the spring support 11 of the torsion coil spring 3 has a plurality of spring pieces 11a, ... Divided in the axial direction, and by the plurality of spring pieces 11a ,. Cylindrical portion 11A located on the outer periphery of the shaft portion 1a of
Flange part 1 that is connected to one end of the and extends radially outward
1B and the like. Therefore, each spring piece 11a, ... Of the spring support 11 changes in the radial direction due to the change in the winding diameter of the torsion coil spring 3.
【0017】上記のように構成すれば、スプリングサポ
ート11は、軸線方向において分割された複数のスプリ
ング片11a,…を有する分割構造であるので、ねじり
コイルばね3の巻径の減少でスプリングサポート11が
締付けられると、スプリングサポート11の各スプリン
グ片11a,…が、図2に示すように、半径方向内方に
変位して、回動部材2のボス部2aの外周面に接触する
ようになり、スプリングサポート11の当たりがよくな
り、スプリングサポート11のボス部11a,…への押
付け力は高まり、摩擦力が高まる。そして、その高まっ
た、回動部材2のボス部2bからの反力に加えて、ねじ
りコイルばね3による締付け力も作用して、大きなダン
ピング力が得られることになる。また、全てのスプリン
グ片11a…がボス部2bに接触することになるので、
ボス部2bとスプリングサポート11との間にクリアン
ランスはなく、スプリングサポート11の変形や破損も
防止される。According to the above-mentioned structure, the spring support 11 has a split structure having a plurality of spring pieces 11a, ... Divided in the axial direction, so that the spring support 11 can be formed by reducing the winding diameter of the torsion coil spring 3. When is tightened, the spring pieces 11a, ... Of the spring support 11 are displaced radially inward as shown in FIG. 2 and come into contact with the outer peripheral surface of the boss portion 2a of the rotating member 2. , The spring support 11 hits well, the pressing force of the spring support 11 against the boss portions 11a, ... Is increased, and the frictional force is increased. Then, in addition to the increased reaction force from the boss portion 2b of the rotating member 2, the tightening force by the torsion coil spring 3 also acts to obtain a large damping force. Also, since all the spring pieces 11a ... Contact the boss portion 2b,
There is no clear lance between the boss portion 2b and the spring support 11, and the spring support 11 is prevented from being deformed or damaged.
【0018】[0018]
【発明の効果】本発明は、上記のように、スプリングサ
ポートを分割構造としたので、巻径の減少でスプリング
サポートが締付けられると、スプリングサポートの各ス
プリング片がボス部の周囲に接触するようになり、スプ
リングサポートのボス部への押付け力が高められる。ま
た、その高められた押付け力に対する、ボス部からの反
力に加えて、ねじりコイルばねの締付け力も作用して、
大きなダンピング力が得られ、また、全てのスプリング
片がボス部に接触することになるので、スプリングサポ
ートの変形や破損を防止することもできる。As described above, according to the present invention, since the spring support has the divided structure, when the spring support is tightened by the reduction of the winding diameter, each spring piece of the spring support comes into contact with the periphery of the boss portion. As a result, the pressing force of the spring support against the boss is increased. In addition to the reaction force from the boss portion against the increased pressing force, the tightening force of the torsion coil spring also acts,
Since a large damping force is obtained and all the spring pieces come into contact with the boss portion, it is possible to prevent the spring support from being deformed or damaged.
【図1】スプリングサポートの斜視図である。FIG. 1 is a perspective view of a spring support.
【図2】作用の説明図である。FIG. 2 is an explanatory diagram of an operation.
【図3】従来のオートテンショナの断面図である。FIG. 3 is a sectional view of a conventional auto tensioner.
【図4】同正面図である。FIG. 4 is a front view of the same.
【図5】従来例のスプリングサポートの斜視図である。FIG. 5 is a perspective view of a conventional spring support.
【図6】同作用の説明図である。FIG. 6 is an explanatory diagram of the same operation.
1 固定部材 1b 軸部 2 回動部材 2b ボス部 3 ねじりコイルばね 11 スプリングサポート 11a スプリング片 1 Fixed member 1b Shaft part 2 Rotating member 2b Boss part 3 Torsion coil spring 11 Spring support 11a Spring piece
Claims (1)
動可能に嵌合され、該ボス部に、ベルトを押圧するプー
リがボス部の軸心と平行な軸心でアーム部材を介して回
転自在に支承され、上記固定部材と回動部材との間に、
該回動部材を固定部材に対し所定方向に回動付勢するね
じりコイルばねがスプリングサポートを介して介装さ
れ、上記回動部材の回動付勢力により上記プーリにベル
ト押圧させて所定の張力を付与し、かつ上記張力の変動
に応じてダンピング力を変化させるようにしたオートテ
ンショナにおいて、 上記スプリングサポートは、軸線方向において分割され
た複数のスプリング片を有することを特徴とするオート
テンショナ。1. A boss portion of a rotating member is rotatably fitted to a shaft portion of a fixed member, and a pulley for pressing a belt is rotatably fitted to the boss portion with an axis parallel to the axis of the boss portion. Is rotatably supported via, and between the fixed member and the rotating member,
A torsion coil spring for biasing the rotating member in a predetermined direction with respect to the fixed member is interposed via a spring support, and the rotating biasing force of the rotating member causes the pulley to press the belt with a predetermined tension. And the damping force is changed according to the fluctuation of the tension, wherein the spring support has a plurality of spring pieces divided in the axial direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23268093A JPH0783295A (en) | 1993-09-20 | 1993-09-20 | Auto tensioner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23268093A JPH0783295A (en) | 1993-09-20 | 1993-09-20 | Auto tensioner |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0783295A true JPH0783295A (en) | 1995-03-28 |
Family
ID=16943114
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23268093A Withdrawn JPH0783295A (en) | 1993-09-20 | 1993-09-20 | Auto tensioner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0783295A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010041747A1 (en) * | 2008-10-10 | 2010-04-15 | 三ツ星ベルト株式会社 | Auto-tensioner |
RU2499930C1 (en) * | 2009-10-30 | 2013-11-27 | Дзе Гейтс Корпорейшн | Tensioning device |
-
1993
- 1993-09-20 JP JP23268093A patent/JPH0783295A/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010041747A1 (en) * | 2008-10-10 | 2010-04-15 | 三ツ星ベルト株式会社 | Auto-tensioner |
JP2010112549A (en) * | 2008-10-10 | 2010-05-20 | Tomokazu Ishida | Auto-tensioner |
US8678965B2 (en) | 2008-10-10 | 2014-03-25 | Mitsuboshi Belting Ltd. | Auto-tensioner |
RU2499930C1 (en) * | 2009-10-30 | 2013-11-27 | Дзе Гейтс Корпорейшн | Tensioning device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20001128 |