JP2876237B2 - Auto tensioner - Google Patents
Auto tensionerInfo
- Publication number
- JP2876237B2 JP2876237B2 JP2034610A JP3461090A JP2876237B2 JP 2876237 B2 JP2876237 B2 JP 2876237B2 JP 2034610 A JP2034610 A JP 2034610A JP 3461090 A JP3461090 A JP 3461090A JP 2876237 B2 JP2876237 B2 JP 2876237B2
- Authority
- JP
- Japan
- Prior art keywords
- peripheral surface
- eccentric
- fixed
- partial cylindrical
- hole
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
- F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、オートテンショナ、さらに詳しくは、自
動車用エンジンのクランクシャフトのプーリとカムシャ
フトのプーリの間に掛けられたタイミングベルトなどに
所定の張力を付与するオートテンショナに関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auto tensioner, and more particularly, to a method of applying a predetermined tension to a timing belt or the like, which is hung between a pulley of a crankshaft and a pulley of a camshaft of an automobile engine. Related to the auto tensioner to be provided.
従来の技術と発明の課題 上記のようなタイミングベルトには、エンジンの温度
変化によるベルトの伸縮や使用によるベルトの伸びを吸
収して、ベルトに所定の張力を付与するために、アイド
ラをばねなどの弾性力によりベルトに押付けるオートテ
ンショナが設けられる。2. Description of the Related Art The timing belt as described above includes an idler such as a spring in order to absorb the expansion and contraction of the belt due to the temperature change of the engine and the elongation of the belt due to use, and to apply a predetermined tension to the belt. An auto tensioner is provided which presses against the belt by the elastic force of the belt.
従来、このようなオートテンショナとしては、固定部
分に固定される円柱状の固定部材と、固定部材の周りに
回転自在に嵌められた偏心穴を有する円柱状の可動偏心
部材と、可動偏心部材の外側に回転自在に取付けられて
ベルトに接触するアイドラと、アイドラがベルトに圧接
する方向に上記可動偏心部材を付勢するばねとを備えて
おり、固定部材の外周面と可動偏心部材の偏心穴内周面
との間に高粘度の油が介在させられて、この部分にベル
トの振動やエンジンの振動によるアイドラの共振を抑制
するために、油圧ダンパの機能が持たされたものが知ら
れている（特開昭63−47551号参照）。Conventionally, as such an auto tensioner, a cylindrical fixing member fixed to a fixing portion, a columnar movable eccentric member having an eccentric hole rotatably fitted around the fixing member, and a movable eccentric member An idler rotatably mounted on the outside and in contact with the belt, and a spring for urging the movable eccentric member in a direction in which the idler is pressed against the belt, the outer peripheral surface of the fixed member and the eccentric hole of the movable eccentric member are provided. It is known that high-viscosity oil is interposed between the peripheral surface and a hydraulic damper function in order to suppress idler resonance caused by belt vibration and engine vibration in this portion. (See JP-A-63-47551).
ところが、従来のオートテンショナでは、高粘度油の
剪断部は固定部材の外周面と可動偏心部材の偏心穴内周
面との間だけであり、油の剪断抵抗を受ける部分の表面
積を十分大きくとることはできず、十分なダンパ機能を
得られないという問題がある。However, in the conventional auto-tensioner, the shearing portion of the high-viscosity oil is only between the outer peripheral surface of the fixed member and the inner peripheral surface of the eccentric hole of the movable eccentric member. However, there is a problem that a sufficient damper function cannot be obtained.
この発明の目的は、上記の問題を解決したオートテン
ショナを提供することにある。An object of the present invention is to provide an auto tensioner that solves the above-mentioned problem.
課題を解決するための手段 この発明によるオートテンショナは、 固定部分に固定される円柱状の固定部材と、固定部材
の周りに回転自在に嵌められた偏心穴を有する円柱状の
可動偏心部材と、可動偏心部材の外側に回転自在に取付
けられてベルトに接触するアイドラと、アイドラがベル
トに圧接する方向に上記可動偏心部材を付勢するばねと
を備えているオートテンショナであって、 上記固定部材の外周面と可動偏心部材の偏心穴の内周
面との間に環状の密閉空間が形成され、上記固定部材に
上記可動偏心部材の偏心穴の内周面に摺接する第１の部
分円筒状部材が固定状に設けられ、上記可動偏心部材に
固定部材の外周面および第１の部分円筒状部材の内周面
に摺接する第２の部分円筒状部材が固定状に設けられ、
上記密閉空間内に高粘度の油が充填され、この油が、固
定部材の外周面と偏心穴の内周面との間、第１の部分円
筒状部材と偏心穴の内周面との間、第２の部分円筒状部
材と固定部材の外周面との間、および第１の部分円筒状
部材と第２の部分円筒状部材との間にそれぞれ介在させ
られているものである。Means for Solving the Problems The auto tensioner according to the present invention comprises: a columnar fixing member fixed to a fixing portion; a columnar movable eccentric member having an eccentric hole rotatably fitted around the fixing member; An auto-tensioner comprising: an idler rotatably mounted on the outer side of the movable eccentric member and in contact with the belt; and a spring for biasing the movable eccentric member in a direction in which the idler comes into pressure contact with the belt. An annular closed space is formed between the outer peripheral surface of the movable eccentric member and the inner peripheral surface of the eccentric hole of the movable eccentric member, and the first partial cylindrical member slidably contacts the fixed member with the inner peripheral surface of the eccentric hole of the movable eccentric member A member is fixedly provided, and the movable eccentric member is fixedly provided with a second partial cylindrical member slidably contacting the outer peripheral surface of the fixed member and the inner peripheral surface of the first partial cylindrical member,
The sealed space is filled with high-viscosity oil, which is between the outer peripheral surface of the fixing member and the inner peripheral surface of the eccentric hole, and between the first partial cylindrical member and the inner peripheral surface of the eccentric hole. , And between the second partial cylindrical member and the outer peripheral surface of the fixed member, and between the first partial cylindrical member and the second partial cylindrical member.
作用 ベルトの振動やエンジンの振動によるアイドラおよび
可動偏心部材の振動は、固定部材の外周面と可動偏心部
材の偏心穴の内周面との間に形成された環状の密閉空間
内に充填され、固定部材の外周面と偏心穴の内周面との
間、第１の部分円筒状部材と偏心穴の内周面との間、第
２の部分円筒状部材と固定部材の外周面との間、および
第１の部分円筒状部材と第２の部分円筒状部材との間に
それぞれ介在させられている高粘度の油の剪断抵抗によ
り抑制される。したがって、油の剪断抵抗を受ける部分
の表面積が従来のものに比べて大きくなる 実 施 例 第１図および第２図に示すように、エンジンの固定部
分（たとえばエンジンブロック）（１）に、段付円柱状
の固定部材（２）がその中心を貫通して固定部分（１）
にねじ込まれたボルト（３）により固定されている。固
定部材（２）の基端側（固定部分（１）側）の一端部
に、小径部（2a）が、小径部（2a）の中央側にこれより
外径の大きい中径部（2b）がそれぞれ形成され、他端部
に上記小径部（2a）よりも径の小さい小径部（2c）が形
成されている。そして、残りの中央の大部分が最も外径
の大きい大径部（2d）となっている。固定部材（２）の
基端側の端部の小径部（2a）に、側板（４）が圧入によ
り固定されている。また、固定部材（２）の先端側（ボ
ルト（３）の頭（3a）側）の端部の小径部（2c）に、プ
ッシュ（５）が圧入により固定されている。側板（４）
は固定部材（２）より外径の大きい円板部（4a）の対称
２箇所に半径方向外側に突出した係合部（4b）とストッ
パ部（4c）が一体に形成されたものである。係合部（4
b）には穴（６）が形成され、固定部分（１）に固定さ
れた係合ピン（７）がこの穴（６）に通されている。プ
ッシュ（５）のボルト（３）の頭（3a）側の端部に小径
部（5a）が形成されている。この小径部（5a）に押え板
（８）が圧入により固定されている。The vibration of the idler and the movable eccentric member caused by the vibration of the belt and the engine is filled in the annular closed space formed between the outer peripheral surface of the fixed member and the inner peripheral surface of the eccentric hole of the movable eccentric member. Between the outer peripheral surface of the fixing member and the inner peripheral surface of the eccentric hole, between the first partial cylindrical member and the inner peripheral surface of the eccentric hole, and between the second partial cylindrical member and the outer peripheral surface of the fixing member. And the shear resistance of the high-viscosity oil interposed between the first partial cylindrical member and the second partial cylindrical member. Therefore, as shown in FIGS. 1 and 2, a step portion is provided on a fixed portion (for example, an engine block) (1) of the engine. A cylindrical fixing member (2) penetrates the center of the fixing member (2).
It is fixed by a bolt (3) screwed into the. A small-diameter portion (2a) is provided at one end on the base end side (fixed portion (1) side) of the fixing member (2), and a medium-diameter portion (2b) having an outer diameter larger than the central portion of the small-diameter portion (2a). Are formed, and a small-diameter portion (2c) having a smaller diameter than the small-diameter portion (2a) is formed at the other end. Most of the remaining center is a large diameter portion (2d) having the largest outer diameter. The side plate (4) is fixed to the small-diameter portion (2a) at the proximal end of the fixing member (2) by press-fitting. Further, a push (5) is fixed by press-fitting to a small-diameter portion (2c) at an end of the fixing member (2) on the tip side (the head (3a) side of the bolt (3)). Side plate (4)
In the figure, an engaging portion (4b) and a stopper portion (4c) projecting outward in the radial direction are integrally formed at two symmetrical positions of a disk portion (4a) having a larger outer diameter than the fixing member (2). Engagement part (4
A hole (6) is formed in b), and an engaging pin (7) fixed to the fixing portion (1) is passed through the hole (6). A small diameter portion (5a) is formed at an end of the push (5) on the head (3a) side of the bolt (3). A holding plate (8) is fixed to the small diameter portion (5a) by press fitting.
側板（４）と押え板（８）との間において、固定部材
（２）の大径部（2d）の周囲に円柱状の可動偏心部材
（11）が偏心状にかつ回転自在に取付けられている。偏
心部材（11）の基端側に固定部材（２）とほぼ同心のボ
ス部（11a）が形成され、残りの先端側の部分が固定部
材（２）に対して偏心した偏心部（11b）となってい
る。Between the side plate (4) and the holding plate (8), a columnar movable eccentric member (11) is eccentrically and rotatably mounted around the large diameter portion (2d) of the fixed member (2). I have. A boss portion (11a) substantially concentric with the fixing member (2) is formed on the base end side of the eccentric member (11), and the remaining distal end portion is an eccentric portion (11b) eccentric with respect to the fixing member (2). It has become.
固定部材（２）の大径部（2d）の外周面と偏心部材
（11）の偏心穴（12）の内周面との間に、環状の密閉空
間（13）が形成されている。密閉空間（13）内に、固定
部材（２）に固定状に設けられた第１の部分円筒状部材
（14）と、可動偏心部材（11）に固定状に設けられた第
２の部分円筒状部材（15）とが配置されている。第１の
部分円筒状部材（14）は、円筒状周壁の一部が全長にわ
たって切除されて部分円筒状となされるとともに、可動
偏心部材（11）の偏心穴（12）の内周面に摺接するよう
に配置されたものであり、その一縁部に径方向内方への
折曲げ部（14a）が形成され、この折曲げ部（14a）が固
定部材（２）の大径部（2d）の外周面に形成された溝
（16）内に圧入により固定されている。第２の部分円筒
状部材（15）は、円筒状周壁の一部が全長にわたって切
除されて部分円筒状となされるとともに、固定部材
（２）の外周面および第１の部分円筒状部材（14）の内
周面に摺接するように配置されたものであり、その一縁
部に径方向外方への折曲げ部（15a）が形成され、この
折曲げ部（15a）が、第１の部分円筒状部材（14）の切
除部を通って可動偏心部材（11）の偏心穴（12）の内周
面に形成された溝（17）内に圧入により固定されてい
る。そして、密閉空間（13）内にたとえば粘度が100,00
0cst（25℃）以上のシリコーンオイル（Ｏ）が封入さ
れ、このオイル（Ｏ）が、第１の部分円筒状部材（14）
と偏心穴（12）の内周面との間、第２の部分円筒状部材
（15）と固定部材（２）の大径部（2d）の外周面との
間、および第１の部分円筒状部材（14）の内周面と第２
の部分円筒状部材（15）の外周面との間にそれぞれ介在
させられてダンパが構成されている。また、偏心部材
（11）の先端側の面に凹所（18）が形成され、この凹所
（18）内に偏心穴（12）と合致する穴（19）を有する側
板（20）が嵌められており、その穴（19）の周縁部が押
え板（８）で押えられることによって固定されている。
そして、固定部材（２）の中径部（2b）と偏心部材（1
1）の偏心穴（12）との間、およびプッシュ（５）の大
径部（5b）と側板（20）の穴（19）の間に、それぞれシ
リコーンオイル（Ｏ）を封止するオイルシール（21）が
取付けられている。An annular closed space (13) is formed between the outer peripheral surface of the large diameter portion (2d) of the fixing member (2) and the inner peripheral surface of the eccentric hole (12) of the eccentric member (11). In the closed space (13), a first partial cylindrical member (14) fixedly provided on the fixed member (2) and a second partial cylindrical member fixedly provided on the movable eccentric member (11). The member (15) is disposed. The first partial cylindrical member (14) has a part of a cylindrical peripheral wall cut away over its entire length to form a partial cylindrical shape, and slides on an inner peripheral surface of an eccentric hole (12) of a movable eccentric member (11). A radially inward bent portion (14a) is formed at one edge of the large-diameter portion (2d) of the fixing member (2). ) Is fixed by press-fitting into a groove (16) formed on the outer peripheral surface. The second partial cylindrical member (15) has a part of the cylindrical peripheral wall cut away over its entire length to form a partial cylindrical shape, and has an outer peripheral surface of the fixing member (2) and the first partial cylindrical member (14). ) Is arranged so as to be in sliding contact with the inner peripheral surface of the first portion, and a radially outwardly bent portion (15a) is formed at one edge thereof, and the bent portion (15a) is The movable eccentric member (11) is fixed by press-fitting into a groove (17) formed on the inner peripheral surface of the eccentric hole (12) through the cutout portion of the partial cylindrical member (14). Then, for example, a viscosity of 100,00
A silicone oil (O) having a temperature of 0 cst (25 ° C.) or more is enclosed, and the oil (O) is used as the first partial cylindrical member (14).
And the inner peripheral surface of the eccentric hole (12), between the second partial cylindrical member (15) and the outer peripheral surface of the large diameter portion (2d) of the fixing member (2), and the first partial cylinder Inner surface of the second member (14) and the second
A damper is configured to be interposed between the partial cylindrical member (15) and the outer peripheral surface of the partial cylindrical member (15). Further, a recess (18) is formed on the surface on the distal end side of the eccentric member (11), and a side plate (20) having a hole (19) matching the eccentric hole (12) is fitted in the recess (18). The periphery of the hole (19) is fixed by being pressed by a holding plate (8).
Then, the medium diameter portion (2b) of the fixing member (2) and the eccentric member (1
An oil seal for sealing silicone oil (O) between the eccentric hole (12) of 1) and the large diameter portion (5b) of the push (5) and the hole (19) of the side plate (20). (21) is installed.
偏心部材（11）の偏心部（11b）の周囲に、円筒状の
アイドラ（22）が複数の球状転動体（23）とシール（2
4）を介して回転自在に取付けられている。Around the eccentric part (11b) of the eccentric member (11), a cylindrical idler (22) is provided with a plurality of spherical rolling elements (23) and a seal (2).
4) is rotatably mounted via
偏心部材（11）のボス部（11a）の周囲に、ブラケッ
ト（25）の短円筒部（25a）が嵌められている。ブラケ
ット（25）は、偏心部材（11）の偏心部（11b）の基端
側端面に挿入された固定ピン（26）により、偏心部材
（11）に対して回転しないように固定されている。ブラ
ケット（25）の一部は基端側に折れ曲ったのち、側板
（４）のストッパ部（4c）に対応して半径方向外側に突
出しており、この部分がストッパ部（25b）となってい
る。このストッパ部（25b）にはばね取付け穴（27）が
形成され、この穴（27）に嵌め止められたブシュ（28）
と固定部分（１）とに引張コイルばね（29）の両端部が
取付けられている。そして、このばね（29）は、ブラケ
ット（25）のストッパ部（25b）が側板（４）のストッ
パ部（4c）から離れる方向（第１図の時計方向）に偏心
部材（11）を付勢し、アイドラ（22）をタイミングベル
ト（30）の歯（31）のない面に押付けている。A short cylindrical portion (25a) of the bracket (25) is fitted around the boss (11a) of the eccentric member (11). The bracket (25) is fixed so as not to rotate with respect to the eccentric member (11) by a fixing pin (26) inserted into the base end surface of the eccentric portion (11b) of the eccentric member (11). After a part of the bracket (25) is bent to the base end side, it protrudes radially outward corresponding to the stopper portion (4c) of the side plate (4), and this portion serves as a stopper portion (25b). I have. A spring mounting hole (27) is formed in this stopper portion (25b), and a bush (28) fitted into this hole (27) is stopped.
Both ends of a tension coil spring (29) are attached to the fixed part (1). The spring (29) biases the eccentric member (11) in a direction (clockwise in FIG. 1) in which the stopper (25b) of the bracket (25) is separated from the stopper (4c) of the side plate (4). Then, the idler (22) is pressed against the toothless (31) surface of the timing belt (30).
次に、上記のオートテンショナの動作を説明する。 Next, the operation of the above-described auto tensioner will be described.
温度変化や使用などによりベルト（30）が伸びて張力
が小さくなろうとすると、ばね（29）により可動偏心部
材（11）が張力を増す方向（第１図の時計方向）に回転
し、アイドラ（22）を介して張力が所定の値に保持され
る。逆に、温度変化などによりベルト（30）が縮んで張
力が大きくなろうとすると、ばね（29）に抗して偏心部
材（11）が張力を減らす方向（第１図の反時計方向）に
回転し、張力が所定の値に保持される。このとき、ベル
ト（30）の伸びまたは縮みは非常に緩やかであるから、
偏心部材（11）の回転速度も非常に小さく、オイル
（Ｏ）が偏心部材（11）の回転を拘束することはない。
これに対し、ベルト（30）の振動やエンジンの振動によ
るアイドラ（22）および偏心部材（11）の振動のような
高周波振動荷重に対しては、第１の部分円筒状部材（1
4）と偏心穴（12）の内周面との間、第２の部分円筒状
部材（15）と固定部材（２）の大径部（2d）の外周面と
の間、および第１の部分円筒状部材（14）と第２の部分
円筒状部材（15）との間にそれぞれ介在させられている
シリコーンオイル（Ｏ）の回転に対する剪断抵抗により
抑制され、偏心部材（11）の回転すなわちアイドラ（2
2）の移動が抑制され、ダンパ効果が発揮される。When the belt (30) is stretched due to temperature change or use and the tension is to be reduced, the movable eccentric member (11) rotates in the direction of increasing the tension (clockwise in FIG. 1) by the spring (29), and the idler ( The tension is maintained at a predetermined value via 22). Conversely, if the belt (30) contracts due to a temperature change or the like and tries to increase the tension, the eccentric member (11) rotates in the direction of reducing the tension (counterclockwise in FIG. 1) against the spring (29). Then, the tension is maintained at a predetermined value. At this time, the belt (30) stretches or contracts very slowly,
The rotation speed of the eccentric member (11) is also very low, and the oil (O) does not restrain the rotation of the eccentric member (11).
On the other hand, the first partial cylindrical member (1) receives a high-frequency vibration load such as the vibration of the idler (22) and the eccentric member (11) due to the vibration of the belt (30) and the vibration of the engine.
4) and the inner peripheral surface of the eccentric hole (12), between the second partial cylindrical member (15) and the outer peripheral surface of the large diameter portion (2d) of the fixing member (2), and The rotation of the eccentric member (11) is suppressed by the shear resistance against the rotation of the silicone oil (O) interposed between the partial cylindrical member (14) and the second partial cylindrical member (15). Idler (2
2) The movement is suppressed, and the damper effect is exhibited.
発明の効果 この発明のオートテンショナによれば、上述のよう
に、油の剪断抵抗を受ける部分の表面積が従来のものに
比べて大きくなるので、十分なダンパ機能が確保され
る。しかも、剪断抵抗を受ける部分の対向面どうしの間
隔は第１および第２の部分円筒状部材の肉厚によって決
定されるので、上記間隔の管理が容易である。したがっ
て、オートテンショナのコンパクト化を図れる。Effect of the Invention According to the auto tensioner of the present invention, as described above, the surface area of the portion that receives the shear resistance of the oil is larger than that of the conventional one, so that a sufficient damper function is ensured. In addition, since the distance between the opposing surfaces of the part that receives the shear resistance is determined by the thickness of the first and second partial cylindrical members, the above-mentioned distance can be easily managed. Therefore, the auto tensioner can be made compact.
第１図はこの発明の１実施例を示す自動車のオートテン
ショナの部分切欠き正面図（第２図Ｉ−Ｉ線の断面
図）、第２図は第１図II−II線の断面図である。 （１）……固定部分、（２）……固定部材、（11）……
可動偏心部材、（12）……偏心穴、（13）……密閉空
間、（14）……第１の部分円筒状部材、（15）……第２
の部分円筒状部材、（22）……アイドラ、（29）……引
張コイルばね、（30）……タイミングベルト、（Ｏ）…
…オイル。FIG. 1 is a partially cutaway front view (a sectional view taken along a line II in FIG. 2) of an auto tensioner of a vehicle showing one embodiment of the present invention, and FIG. 2 is a sectional view taken along a line II-II in FIG. is there. (1) ... fixed part, (2) ... fixed member, (11) ...
Movable eccentric member, (12) eccentric hole, (13) closed space, (14) first partial cylindrical member, (15) second
(22) ... idler, (29) ... tension coil spring, (30) ... timing belt, (O) ...
…oil.
Claims (1)
と、固定部材の周りに回転自在に嵌められた偏心穴を有
する円柱状の可動偏心部材と、可動偏心部材の外側に回
転自在に取付けられてベルトに接触するアイドラと、ア
イドラがベルトに圧接する方向に上記可動偏心部材を付
勢するばねとを備えているオートテンショナであって、 上記固定部材の外周面と可動偏心部材の偏心穴の内周面
との間に環状の密閉空間が形成され、上記固定部材に上
記可動偏心部材の偏心穴の内周面に摺接する第１の部分
円筒状部材が固定状に設けられ、上記可動偏心部材に固
定部材の外周面および第１の部分円筒状部材の内周面に
摺接する第２の部分円筒状部材が固定状に設けられ、上
記密閉空間内に高粘度の油が充填され、この油が、固定
部材の外周面と偏心穴の内周面との間、第１の部分円筒
状部材と偏心穴の内周面との間、第２の部分円筒状部材
と固定部材の外周面との間、および第１の部分円筒状部
材と第２の部分円筒状部材との間にそれぞれ介在させら
れているオートテンショナ。A cylindrical fixed member fixed to a fixed portion, a columnar movable eccentric member having an eccentric hole rotatably fitted around the fixed member, and a rotatable outside of the movable eccentric member. What is claimed is: 1. An auto-tensioner comprising: an idler that is attached to contact a belt; and a spring that biases the movable eccentric member in a direction in which the idler comes into pressure contact with the belt, wherein an eccentricity between an outer peripheral surface of the fixed member and the movable eccentric member is provided. An annular closed space is formed between the inner peripheral surface of the hole and an inner peripheral surface of the hole, and a first partial cylindrical member slidably contacting the inner peripheral surface of the eccentric hole of the movable eccentric member is fixedly provided on the fixed member. The movable eccentric member is fixedly provided with a second partial cylindrical member slidingly contacting the outer peripheral surface of the fixed member and the inner peripheral surface of the first partial cylindrical member, and the sealed space is filled with high-viscosity oil. This oil is eccentric with the outer peripheral surface of the fixing member. Between the inner peripheral surface of the hole, between the first partial cylindrical member and the inner peripheral surface of the eccentric hole, between the second partial cylindrical member and the outer peripheral surface of the fixing member, and the first partial cylinder An auto tensioner interposed between the cylindrical member and the second partial cylindrical member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2034610A JP2876237B2 (en) | 1990-02-15 | 1990-02-15 | Auto tensioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2034610A JP2876237B2 (en) | 1990-02-15 | 1990-02-15 | Auto tensioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03239847A JPH03239847A (en) | 1991-10-25 |
| JP2876237B2 true JP2876237B2 (en) | 1999-03-31 |
Family
ID=12419138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2034610A Expired - Fee Related JP2876237B2 (en) | 1990-02-15 | 1990-02-15 | Auto tensioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2876237B2 (en) |
-
1990
- 1990-02-15 JP JP2034610A patent/JP2876237B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03239847A (en) | 1991-10-25 |
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