JPH11230283A - Tension device for flexible power transmission member - Google Patents

Tension device for flexible power transmission member

Info

Publication number
JPH11230283A
JPH11230283A JP10037299A JP3729998A JPH11230283A JP H11230283 A JPH11230283 A JP H11230283A JP 10037299 A JP10037299 A JP 10037299A JP 3729998 A JP3729998 A JP 3729998A JP H11230283 A JPH11230283 A JP H11230283A
Authority
JP
Japan
Prior art keywords
tension
power transmission
elastic member
pulley
rubber
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
Application number
JP10037299A
Other languages
Japanese (ja)
Inventor
Yukimi Yamazaki
幸実 山崎
Shuji Osako
修治 大迫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Isuzu Motors Ltd
Original Assignee
Isuzu Motors Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Isuzu Motors Ltd filed Critical Isuzu Motors Ltd
Priority to JP10037299A priority Critical patent/JPH11230283A/en
Publication of JPH11230283A publication Critical patent/JPH11230283A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes, or chains
    • F16H7/10Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
    • F16H7/12Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
    • F16H7/1254Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means
    • F16H7/1281Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially circular path
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes, or chains
    • F16H2007/0802Actuators for final output members
    • F16H2007/0819Rubber or other elastic materials
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/08Means for varying tension of belts, ropes, or chains
    • F16H7/0829Means for varying tension of belts, ropes, or chains with vibration damping means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent the dynamic tension from being increased by forming a tension regulating device of a body turnably supported at one point, a tension pulley which is turnably supported by the body and presses a power transmission member, and an elastic member to apply the elastic force to the body, sand consisting the elastic member of a rubber-like material. SOLUTION: In a tension device 6, a body 10 is pivotably supported by a bolt 13 on a base substance, and a tension pulley 12 is turnably supported by a rotary shaft 11 supported by the body 10. One end of an elastic member 14 is connected to the body 10 by a pin 15a, and the other end is pivotably supported to an engine body by a pin 15. In the elastic member 14, the ping 15 inserted in a hole opened in the connection part of a support part 14c is pivotably supported by the engine body. The ping 15a is inserted in a hole opened in a support part 14a, and turnably connected to the body 10. An elastic material of the elastic member 14 to apply the elastic force to the body 10 to support the tension pulley 12 is formed of a rubber part 14b. Generation of excessive tension can be avoided thereby.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、駆動プーリと従動
プーリとの間にベルト等の可撓性動力伝達部材を懸け回
し、駆動プーリから従動プーリ側に動力を伝達する装置
において、前記可撓性動力伝達部材が緩まないように所
定の張力を発生させるための撓性動力伝達部材用張力調
整装置、即ちベルトテンション装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for transmitting a power from a driving pulley to a driven pulley by hanging a flexible power transmission member such as a belt between the driving pulley and the driven pulley. The present invention relates to a flexible power transmission member tension adjusting device for generating a predetermined tension so that the flexible power transmission member does not loosen, that is, a belt tension device.

【0002】[0002]

【従来の技術】例えばトラックの大型のエンジンにおい
ては、クランクプーリの動力をベルトやチエン等の可撓
性動力伝達部材(以下ベルトとして説明する)を介して
発電機等のエンジンに関連する機器に伝達してこれを駆
動しているが、その際に、長期にわたって適正な駆動力
を得るために張力調整装置、即ちベルトテンション装置
を付設する必要がある。
2. Description of the Related Art For example, in a large truck engine, the power of a crank pulley is transmitted to a device such as a generator through a flexible power transmission member (hereinafter, referred to as a belt) such as a belt or chain. The power is transmitted and driven, and at this time, a tension adjusting device, that is, a belt tension device needs to be provided in order to obtain an appropriate driving force over a long period of time.

【0003】このベルトテンション装置として一般的に
は固定型とオートテンション型(A/T型)が知られて
いる。この固定型の場合は、回転軸にプーリを支持させ
たものをベルトの経路に突出するように配置して、押圧
し、ベルトに所定の張力を付与させるもので、その構造
は極めて簡単なものであるが、長期にわたって大きな動
力を伝達する装置には不適当なものである。
As the belt tension device, a fixed type and an automatic tension type (A / T type) are generally known. In the case of this fixed type, a structure in which a pulley is supported on a rotating shaft is arranged so as to protrude into the belt path, and is pressed to apply a predetermined tension to the belt, and the structure is extremely simple. However, it is not suitable for a device that transmits large power over a long period of time.

【0004】即ち、この固定型のテンション装置におい
てはベルトの伸びを考慮して初期張力を高くしておく必
要があることから、その初期状態においてベルトやこの
ベルトを支持する周辺の関連部品に過大な応力が発生さ
せる場合があり、これに耐えるために全体的にかなり強
度の高い構造とする必要がある。また、ベルトに高い張
力を付与しなければならないことからベルトの寿命を短
縮する原因ともなっている。
That is, in this fixed type tension device, it is necessary to increase the initial tension in consideration of the elongation of the belt, so that in the initial state, the belt and the related parts supporting the belt are excessively large. In some cases, a strong stress may be generated, and in order to withstand the stress, it is necessary to provide a structure having a considerably high strength as a whole. In addition, since a high tension must be applied to the belt, it also shortens the life of the belt.

【0005】これに反してA/T型テンション装置の場
合は、ベルトに過大な初期張力を与えることがなく、初
期から一定の張力が保たれるためにベルトの寿命が伸
び、また、張力を一定に保持することができる点におい
て優れている。ところで、トラック用エンジンの場合は
乗用車用エンジンに比較して5〜10倍程度の走行距離
が必要である上に、エンジンが大型であることからベル
トの張力も大きく、その張力に伴ってテンション装置に
作用する荷重も大きくなる。
On the other hand, in the case of the A / T type tension device, an excessive initial tension is not applied to the belt, and a constant tension is maintained from the beginning, so that the life of the belt is extended and the tension is reduced. It is excellent in that it can be kept constant. By the way, in the case of a truck engine, the traveling distance is required to be about 5 to 10 times as compared with that of a passenger car engine, and in addition, since the engine is large, the belt tension is large, and the tension device is accordingly increased. The load acting on the tire also increases.

【0006】例えば、実開昭64−53661号公報に
記載されたA/T型テンション装置はボデイの下部に第
1油室を、これに隣接して第2油室を設け、前記第1油
室を構成するプランジャの軸を延長し、更にこの第2油
室の上方にフリーピストンを配置し、このフリーピスト
ンでスプリングの下端を受けるように構成したものであ
る。しかし、この装置の場合は、装置が複雑である上に
シール部が劣化し易いことから油漏れや破損などをの事
故を発生し易く、十分に耐久性のあるトラック用エンジ
ンに適用できる装置を得ることが困難であった。
For example, the A / T type tension device described in Japanese Utility Model Laid-Open Publication No. 64-53661 has a first oil chamber below a body and a second oil chamber adjacent to the first oil chamber. The shaft of a plunger constituting the chamber is extended, and a free piston is arranged above the second oil chamber, and the free piston receives the lower end of the spring. However, in the case of this device, since the device is complicated and the seal portion is easily deteriorated, an accident such as oil leakage or breakage is likely to occur, and a device that can be applied to a sufficiently durable truck engine is used. It was difficult to obtain.

【0007】また、A/T型テンション装置は油室をピ
ストンに設けた一方弁で仕切り、張力が下がる方の移動
を規制する(プランジャとシリンダの間隙からオイルが
若干漏れるが、プランジャピストンのボール弁部により
規制するためダンピングとなる)ことによって保持し、
スプリングで張力が上がる方向に押圧している。
In the A / T type tension device, the oil chamber is partitioned by a one-way valve provided on the piston, and the movement of the lowering of the tension is restricted. (It becomes damping to regulate by the valve part)
The spring is pressing in the direction of increasing tension.

【0008】[0008]

【発明が解決しようとする課題】図3にエンジン停止時
の静的なベルトの張力変化を示すもので、線Aは固定型
の装置の場合を、また、線BはA/T型テンション装置
の場合を、同時に後述する本発明の装置に関して線Pで
それぞれ示している。この図のように線Bで示すA/T
型テンション装置の場合には時間に関係なく一定の張力
が付与されているが、線Aで示す固定型の装置において
は、ある程度のベルトの伸びを考慮して初期張力を大き
くしておく必要があり、この張力は時間と共に次第に減
少することになる。
FIG. 3 shows a static belt tension change when the engine is stopped. A line A shows a case of a fixed type device, and a line B shows an A / T type tension device. Is also indicated by a line P, respectively, for the device according to the invention, which is described below. A / T indicated by line B as shown in FIG.
In the case of the mold tension device, a constant tension is applied regardless of time. However, in the fixed type device shown by the line A, it is necessary to increase the initial tension in consideration of a certain degree of belt elongation. Yes, this tension will gradually decrease over time.

【0009】そして図4はエンジンを作動させた場合の
動的な張力変化を示しているが、線aに固定型の装置の
場合を、また、線bにA/T型テンション装置の場合
を、同時に後述する本発明の装置の場合を線pでそれぞ
れ示している。図4に示す如く、各テンション装置にお
ける動的張力変化はクランク軸の回転変動によって変化
する形となる。A/T型テンション装置の場合は、線b
に示す如くクランク回転により生じる張力変動に追従
し、常に規定の張力を維持しようとするので動的に高く
なってしまう。このことから、特に変動の大きい低回転
や、クランク軸のねじれ振動が生じる高回転で顕著にな
る。更にスプリングの固有振動数がエンジンの作動周波
数と重なって共振点Fが発生し、この部分では張力が急
激に上昇して激しくテンション装置が振動することにな
る。
FIG. 4 shows the dynamic tension change when the engine is operated. The line a shows the case of the fixed type device, and the line b shows the case of the A / T type tension device. At the same time, the case of the apparatus of the present invention described later is indicated by a line p. As shown in FIG. 4, the dynamic tension change in each tension device changes according to the rotation fluctuation of the crankshaft. In the case of the A / T type tension device, the line b
As shown in (1), it follows the tension fluctuation caused by the crank rotation, and always tries to maintain the specified tension, so that the tension dynamically increases. From this, it becomes remarkable especially at a low rotation where the fluctuation is large and a high rotation where torsional vibration of the crankshaft occurs. Further, the natural frequency of the spring overlaps with the operating frequency of the engine, and a resonance point F is generated. In this portion, the tension rapidly rises and the tension device vibrates violently.

【0010】この時、A/T型テンション装置のピスト
ンは一方向にダンピングされる構造になっているため
に、このピストンはバネの振動に対して完全に追従する
ことができず、バネの圧縮力が上昇するように圧縮さ
れ、遂にはバネが完全に圧縮状態となって恰もバネ定数
が急激に大きくなったように作動することになり、その
結果、ベルトに過大な張力を与える状態となる。このよ
うにベルトの張力が過大となるとその寿命を縮める上
に、遂にはA/T型テンション装置の破損を招くことに
なる。
At this time, since the piston of the A / T type tension device is configured to be damped in one direction, the piston cannot completely follow the vibration of the spring, and the compression of the spring is prevented. The force is compressed to increase, and eventually the spring is fully compressed, operating as if the spring constant had increased sharply, resulting in excessive tension on the belt. . When the tension of the belt is excessive, the life of the belt is shortened, and finally, the A / T type tension device is damaged.

【0011】このようなA/T型テンション装置の問題
点を考慮して前記共振点Fをエンジン回転数より変位さ
せることで改善する方法も考えられているが、この装置
に使用される金属製スプリングは、寸法の問題もあり、
その剛性、減衰特性等の性質を張力とのバランスをとり
ながら簡単に大きく変化させることは困難であり、実質
的に大きな改善効果を得ることが困難である。
In consideration of such problems of the A / T type tension device, a method of improving the resonance point F by displacing the resonance point F from the engine speed has been considered. The spring has a problem of the size,
It is difficult to easily and largely change the properties such as the rigidity and the damping characteristic while maintaining the balance with the tension, and it is difficult to obtain a substantially large improvement effect.

【0012】本発明は、前記従来の固定型のテンション
装置の持つ、初期張力を高く設定しなければならないこ
とからベルトの寿命に影響がある点と、A/T型テンシ
ョン装置の持つエンジンの回転数によってテンション装
置が共振し、動的張力が高くなるという問題点を改善し
たものを提供することを目的とするものである。
According to the present invention, the conventional fixed type tension device has a problem that the life of the belt is affected because the initial tension must be set high, and the engine rotation of the A / T type tension device. It is an object of the present invention to provide a device in which the tension device resonates depending on the number and the dynamic tension increases.

【0013】[0013]

【課題を解決するための手段】前記目的を達成するため
の本発明に係る可撓性動力伝達部材用テンション装置
は、回転駆動源に設けたプーリと、該回転駆動源の動力
を受けて駆動される従動プリーとの間に懸け回した可撓
性動力伝達部材に所定の張力を与えるためのテンション
装置において、該張力調整装置は、1点を回動可能に支
持した本体と、該本体の一方に回転自在に支持され、前
記動力伝達部材を押圧するテンションプーリと、該本体
の他方に弾力を作用させるための弾力部材とからなり、
該弾力部材はゴム状部材で構成されている。
According to the present invention, there is provided a tensioning device for a flexible power transmission member according to the present invention, comprising: a pulley provided on a rotary drive source; A tensioning device for applying a predetermined tension to the flexible power transmission member suspended between the driven pulley and the driven pulley, the tension adjusting device comprising: a main body rotatably supporting one point; A tension pulley rotatably supported on one side and pressing the power transmission member, and an elastic member for applying elasticity to the other of the main body;
The elastic member is made of a rubber-like member.

【0014】また、前記弾力部材は中空状に形成され、
その内部に粘性流体が封入されている。前記弾力部材は
ゴム部材であり、このゴム部材はスチレン−ブタジエン
ゴム(SBR)等の汎用耐熱性ゴムを使用するのが良い
が、天然ゴムやあらゆる合成ゴムを使用することができ
る。
Further, the elastic member is formed in a hollow shape,
A viscous fluid is sealed therein. The elastic member is a rubber member. The rubber member is preferably a general-purpose heat-resistant rubber such as styrene-butadiene rubber (SBR), but may be a natural rubber or any synthetic rubber.

【0015】また、このゴム部材は中実な円筒状のもの
を多く使用することができるが、中央部を中空にしてそ
の中にシリコンオイル等の粘性流体を封入することによ
ってダンピング効果を与えたものを使用することもでき
る。
Although many rubber members having a solid cylindrical shape can be used as the rubber member, a damping effect is provided by making the center portion hollow and enclosing a viscous fluid such as silicon oil therein. Things can also be used.

【0016】[0016]

【発明の実施の形態】次に、図面を参照して本発明に係
る可撓性動力伝達部材用テンション装置について説明す
る。図1はエンジンのクランクプーリ1(駆動プーリ)
と発電機2の軸に設けたプーリ3(従動プーリ)との間
にかけ回されたベルト4(可撓性動力伝達部材)との関
係を示すもので、このベルト4はアイドルプーリ5によ
って所定の経路に案内され、そしてこのアイドルプーリ
5とは反対の位置に本発明に係る可撓性動力伝達部材用
テンション装置6(ベルトテンション装置)を配置して
いる。なお、7はフライホイールである。
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a tension device for a flexible power transmission member according to the present invention. FIG. 1 shows an engine crank pulley 1 (drive pulley).
And a belt 4 (flexible power transmission member) wound around a pulley 3 (a driven pulley) provided on the shaft of the generator 2. A flexible power transmission member tensioning device 6 (belt tensioning device) according to the present invention is disposed at a position opposite to the idle pulley 5 guided by the path. In addition, 7 is a flywheel.

【0017】前記テンション装置6は、本体10を図示
しないエンジン本体等の基体上にボルト13で枢支し、
この本体10の一方に支持した回転軸11にテンション
プーリ12を回転自在に支持している。そして前記本体
10の他端に弾力部材14の一端をピン15aで連結
し、他端をエンジン本体にピン15で枢支している。前
記弾力部材14は、図2に示すように金属製で端部を凹
形に形成した支持部14aと、ゴム部14bと、前記支
持部14aと同様な端部の形状に形成した金属製の支持
部14cとで構成され、前記支持部14cの連結部に開
口した孔15bに挿入したピン15をエンジン本体に枢
支されている。同様に支持部14aに開口した孔15c
にピン15aを挿入して前記本体10の一端と回動可能
に連結している。
The tensioning device 6 pivotally supports the main body 10 on a base such as an engine main body (not shown) with bolts 13.
A tension pulley 12 is rotatably supported on a rotating shaft 11 supported on one side of the main body 10. One end of the elastic member 14 is connected to the other end of the main body 10 by a pin 15a, and the other end is pivotally supported by the pin 15 to the engine main body. As shown in FIG. 2, the elastic member 14 has a support portion 14a made of metal and formed with a concave end, a rubber portion 14b, and a metal formed with the same end shape as the support portion 14a. A pin 15 inserted into a hole 15b opened in a connecting portion of the support portion 14c is pivotally supported by the engine body. Similarly, a hole 15c opened in the support portion 14a
A pin 15a is inserted into the main body 10 so as to be rotatable.

【0018】前記のように構成されたテンション装置の
本体10は、一端にテンションプーリ12を持ち、他端
が弾力部材14で押圧され、しかもこの本体10はボル
ト13を介してエンジン本体等の基体上にに揺動可能に
支持されていることから、テンションプーリ12は矢印
Sで示すようにボルト13を中心として揺動し、ベルト
4に所定の張力を与えるようになっている。
The main body 10 of the tension device constructed as described above has a tension pulley 12 at one end and is pressed by an elastic member 14 at the other end. Since the tension pulley 12 is swingably supported above, the tension pulley 12 swings around the bolt 13 as shown by the arrow S, and applies a predetermined tension to the belt 4.

【0019】本発明のテンション装置においては、テン
ションプーリ12を支持する本体10に弾性力を作用さ
せる弾力部材14の弾性材料として、従来の装置で使用
されているバネではなく、特に弾性ゴムによるゴム部1
4bで形成した点に特徴がある。この弾性ゴムを使用し
た理由は、図3を参照して説明したようにA/T型テン
ション装置では、ベルト4の静的張力を一定に保つため
に複雑な構造にすることなく、ほぼこれに近い特性を有
し、しかも、この装置に比較して著しく簡単な構造にす
ることができるからである。
In the tensioning device of the present invention, the elastic material of the elastic member 14 for applying an elastic force to the main body 10 supporting the tension pulley 12 is not a spring used in the conventional device, but a rubber made of elastic rubber. Part 1
4b. The reason for using this elastic rubber is that, as described with reference to FIG. 3, in the A / T type tension device, the static tension of the belt 4 is kept constant without a complicated structure to keep it constant. This is because they have similar characteristics and can have a significantly simpler structure than this device.

【0020】このように弾性材料として弾性ゴムを採用
することによって、ゴム成形時の充填剤を調節してその
弾性率を容易に、しかも広範囲で変化させることがで
き、それによってテンション装置6のエンジンの回転数
との共振点を簡単に変えることができるからである。本
発明に係る装置は、図4に線pで示しているように、A
/T型装置の共振点Fより遙かに高いエンジン回転にお
いて共振するように固有周波数を容易に高めることがで
きることから、通常のエンジン運転において過大な張力
の発生を容易に回避することができるという特徴を有し
ている。
By adopting the elastic rubber as the elastic material in this manner, it is possible to easily and widely change the elastic modulus by adjusting the filler at the time of molding the rubber. This is because the resonance point with the number of rotations can be easily changed. The device according to the invention has an A, as indicated by the line p in FIG.
Since the natural frequency can be easily increased so as to resonate at an engine rotation far higher than the resonance point F of the / T type device, it is possible to easily avoid the generation of excessive tension in normal engine operation. Has features.

【0021】弾性ゴムとしては、SBR(スチレン−ブ
タジエンゴム)等の汎用耐熱性ゴムが適しているが、同
様な弾性率を得ることができるのであれば天然ゴム、ま
たはあるゆる合成ゴム等を使用することができる。ま
た、金属製の支持部14a,14cとゴム部14bとの
接着は一般的な加硫接着によって簡単であるが、耐久性
を持ちながら強固に行うことができる。この場合、前記
支持部14a,14cの端部に図2に示す如く凹部を形
成してゴム部14bの両端を保護して接合が確実なもの
となる。
As the elastic rubber, general-purpose heat-resistant rubber such as SBR (styrene-butadiene rubber) is suitable, but natural rubber or any synthetic rubber can be used as long as a similar elastic modulus can be obtained. can do. Further, the bonding between the metal supporting portions 14a and 14c and the rubber portion 14b is simple by general vulcanization bonding, but can be performed firmly with durability. In this case, concave portions are formed at the end portions of the support portions 14a and 14c as shown in FIG. 2 to protect both ends of the rubber portion 14b, so that joining is ensured.

【0022】また、前記ゴム部14bは円柱状のものを
一般に使用するが、これの中央部に空洞を形成した中空
構造とし、この空洞の内部にシリコンオイル等の粘性流
体を封入した構造のものを使用することができる。この
粘性流体を封入したゴム体の場合は、このゴム体が加振
された場合に、このゴム体内に封入されている粘性流体
がゴム体内の空洞部の容積の増減を抑制するように作用
してダンピング作用が発生し、弾力部材14で一端が押
圧されているテンション装置6の共振点がエンジンの作
動回転内で発生しても、このゴム部14bの大きな伸縮
が抑制されてテンションプーリ12に大きな振動を発生
させることがなく、従って、ベルト4に大きな張力変動
を発生させない装置を提供することができるのである。
The rubber portion 14b generally has a columnar shape, but has a hollow structure having a cavity formed in the center thereof, and a structure in which a viscous fluid such as silicon oil is sealed inside the cavity. Can be used. In the case of a rubber body in which the viscous fluid is sealed, when the rubber body is vibrated, the viscous fluid sealed in the rubber body acts to suppress a change in the volume of the cavity in the rubber body. Therefore, even if a resonance point of the tension device 6 whose one end is pressed by the elastic member 14 occurs within the operation rotation of the engine, large expansion and contraction of the rubber portion 14b is suppressed, and the tension pulley 12 Thus, it is possible to provide a device that does not generate large vibration, and thus does not cause large tension fluctuation in the belt 4.

【0023】[0023]

【発明の効果】本発明に係る可撓性動力伝達部材用テン
ション装置は、回転駆動源に設けた駆動プーリと従動プ
リーとの間に懸け回した可撓性動力伝達部材に所定の張
力を与えるための張力調整装置として1点を回動可能に
支持した本体と、この本体の一方に回転自在に支持さ
れ、前記動力伝達部材を押圧するテンションプーリと、
この本体の他方に弾力を作用させるための弾力部材とか
らなり、しかも前記弾力部材はゴム状部材で構成されて
いる。
The tension device for a flexible power transmission member according to the present invention applies a predetermined tension to a flexible power transmission member suspended between a driving pulley provided on a rotary drive source and a driven pulley. A main body rotatably supported at one point as a tension adjusting device for the same, a tension pulley rotatably supported by one of the main bodies and pressing the power transmission member;
An elastic member is provided for applying elasticity to the other of the main body, and the elastic member is formed of a rubber-like member.

【0024】従って、固定型のテンション装置のように
ベルト等に過大な初期張力を与えることがなく、また、
オートテンション型装置のように構造が複雑化しない上
に、エンジンの回転数にテンション装置が共振する周波
数を簡単に回避でき、ベルト等に所定の張力を安定して
与えることができ、動力駆動系に安定して動力を与える
ことができる。
Accordingly, unlike a fixed type tension device, an excessive initial tension is not applied to a belt or the like.
In addition to the fact that the structure is not complicated as in the case of the auto tension type device, the frequency at which the tension device resonates with the engine speed can be easily avoided, and a predetermined tension can be stably applied to the belt and the like. Power can be supplied stably.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に実施の態様を示すエンジン用ベルトテ
ンション装置の正面図である。
FIG. 1 is a front view of an engine belt tension device according to an embodiment of the present invention.

【図2】テンション装置を構成する弾力部材の断面図で
ある。
FIG. 2 is a sectional view of an elastic member constituting the tension device.

【図3】各種のテンション装置の時間経過と張力変動と
の関係を静的に示すグラフである。
FIG. 3 is a graph statically showing the relationship between the passage of time and tension fluctuation of various tension devices.

【図4】各種のテンション装置におけるエンジン回転数
と張力変動との関係を動的に示すグラフである。 1 クランクプーリ(駆動プーリ) 2 発電機 3 プーリ(従動プーリ) 4 ベルト(可撓性動力
伝達部材) 5 アイドルプーリ 6 テンション装置 7 フ
ライホイール 10 本体 11 回転軸 12 テンションプー
リ 13 ボルト 14 弾性部材 14a,14c 金属性支持部
14b ゴム部 15、15a ピン 15b,15c 孔
FIG. 4 is a graph dynamically showing a relationship between an engine speed and a tension variation in various tension devices. Reference Signs List 1 crank pulley (drive pulley) 2 generator 3 pulley (driven pulley) 4 belt (flexible power transmission member) 5 idle pulley 6 tension device 7 flywheel 10 body 11 rotation shaft 12 tension pulley 13 bolt 14 elastic member 14a, 14c metal support
14b Rubber part 15, 15a Pin 15b, 15c hole

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】回転駆動源に設けたプーリと、該回転駆動
源の動力を受けて駆動される従動プーリとの間に懸け回
した可撓性動力伝達部材に所定の張力を与えるための張
力調整装置において、 該張力調整装置は、1点を回動可能に支持した本体と、
該本体の一方に回転自在に支持され、前記動力伝達部材
を押圧するテンションプーリと、該本体の他方に弾力を
作用させるための弾力部材とからなり、該弾力部材はゴ
ム状部材で構成されている可撓性動力伝達部材用テンシ
ョン装置。
A tension for applying a predetermined tension to a flexible power transmission member suspended between a pulley provided on a rotary drive source and a driven pulley driven by receiving the power of the rotary drive source. In the adjusting device, the tension adjusting device includes a main body rotatably supporting one point,
A tension pulley rotatably supported on one of the main bodies and pressing the power transmission member, and an elastic member for applying elasticity to the other of the main body, wherein the elastic member is formed of a rubber member. Tension device for a flexible power transmission member.
【請求項2】 前記弾力部材は中空状であって、その内
部に粘性流体が封入されている請求項1記載の撓性動力
伝達部材用テンション装置。
2. The tensioning device for a flexible power transmission member according to claim 1, wherein the elastic member is hollow and a viscous fluid is sealed therein.
JP10037299A 1998-02-19 1998-02-19 Tension device for flexible power transmission member Pending JPH11230283A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10037299A JPH11230283A (en) 1998-02-19 1998-02-19 Tension device for flexible power transmission member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10037299A JPH11230283A (en) 1998-02-19 1998-02-19 Tension device for flexible power transmission member

Publications (1)

Publication Number Publication Date
JPH11230283A true JPH11230283A (en) 1999-08-27

Family

ID=12493838

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10037299A Pending JPH11230283A (en) 1998-02-19 1998-02-19 Tension device for flexible power transmission member

Country Status (1)

Country Link
JP (1) JPH11230283A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100649402B1 (en) 2004-02-06 2006-11-27 미츠비시 후소 트럭 앤드 버스 코포레이션 Apparatus for adjusting tension of belt for engine
KR100656773B1 (en) 2004-02-03 2006-12-13 미츠비시 후소 트럭 앤드 버스 코포레이션 Apparatus for adjusting tension of belt for engine
JP2012162231A (en) * 2011-02-09 2012-08-30 Toyota Motor Corp Control device of hybrid vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100656773B1 (en) 2004-02-03 2006-12-13 미츠비시 후소 트럭 앤드 버스 코포레이션 Apparatus for adjusting tension of belt for engine
KR100649402B1 (en) 2004-02-06 2006-11-27 미츠비시 후소 트럭 앤드 버스 코포레이션 Apparatus for adjusting tension of belt for engine
JP2012162231A (en) * 2011-02-09 2012-08-30 Toyota Motor Corp Control device of hybrid vehicle

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