JPH051750A - Belt driving device - Google Patents
Belt driving deviceInfo
- Publication number
- JPH051750A JPH051750A JP5910791A JP5910791A JPH051750A JP H051750 A JPH051750 A JP H051750A JP 5910791 A JP5910791 A JP 5910791A JP 5910791 A JP5910791 A JP 5910791A JP H051750 A JPH051750 A JP H051750A
- Authority
- JP
- Japan
- Prior art keywords
- load
- pulley
- pulleys
- belt
- axial
- 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
- 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
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、駆動プ−リと、単数又
は複数の従動プ−リを有し、自動車補機駆動に用いられ
るベルト伝動装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt transmission having a drive pulley and one or more driven pulleys and used for driving an auxiliary machine of an automobile.
【０００２】[0002]
【従来の技術】一般に、ベルト伝動装置においては、高
負荷伝動するためには、プ−リへの巻付け角（接触角）
を大きくし、また、ベルト張力を高くする必要がある。2. Description of the Related Art Generally, in a belt transmission, in order to transmit a high load, a winding angle (contact angle) around a pulley is required.
And belt tension must be increased.
【０００３】図４に示すように、駆動プ−リａと従動プ
−リｂとの間に巻回される伝動ベルトｃに対し、テンシ
ョナプ−リｄを適用して、プ−リａ，ｂと平ベルトｃと
の接触角度θが大きくなるように、巻き付けグリップ力
を高めている。As shown in FIG. 4, a tensioner pulley d is applied to a transmission belt c wound between a drive pulley a and a driven pulley b, and pulleys a and b are applied. The winding grip force is increased so that the contact angle θ between the flat belt c and the flat belt c becomes large.
【０００４】軸荷重Ｆ(kgf) は、次の３つの数式によっ
て算出される。The axial load F (kgf) is calculated by the following three formulas.
【０００５】[0005]
【数１】 [Equation 1]
【０００６】[0006]
【数２】 [Equation 2]
【０００７】μ：見掛けの摩擦係数 θ：接触角度(rad) Ｐ：負荷(PS) Ｖ：ベルト速度(m/sec) Ｔ1 ：張り側張力(kgf) Ｔ2 ：緩み側張力(kgf)Μ: Apparent friction coefficient θ: Contact angle (rad) P: Load (PS) V: Belt speed (m / sec) T1: Tension tension (kgf) T2: Loose tension (kgf)
【０００８】[0008]
【数３】 [Equation 3]
【０００９】[0009]
【発明が解決しようとする課題】したがって、摩擦係数
μが小さいと、張力Ｔ1 ，Ｔ2 が大きくなり、軸荷重Ｆ
が大きくなるので、従来は、接触角度をできるだけ大き
くとることで指数μθを大きくし、張力Ｔ1 ，Ｔ2を小
さくする程度の対応しか取れず、高負荷伝動に対応でき
ないのが現状である。特に、自動車補機駆動のサ−ペン
タイン用として１本の伝動ベルトを用いる場合には、各
補機駆動の負荷が１本のベルトに作用し、軸荷重が大き
くなり問題である。Therefore, when the friction coefficient μ is small, the tensions T1 and T2 are large and the axial load F
Therefore, conventionally, it is not possible to cope with high load transmission by only increasing the index μθ and decreasing the tensions T1 and T2 by making the contact angle as large as possible. In particular, when one transmission belt is used for a vehicle auxiliary drive serpentine, the load of each auxiliary drive acts on one belt, and the axial load becomes large, which is a problem.
【００１０】本発明はかかる点に鑑みてなされたもの
で、軸荷重を小さくすることができるベルト伝動装置を
提供するものである。The present invention has been made in view of the above circumstances, and provides a belt transmission device capable of reducing the axial load.
【００１１】[0011]
【課題を解決するための手段】本発明は、駆動プ−リ
と、単数又は複数の従動プ−リを有する自動車補機駆動
に用いられるベルト伝動装置を前提として、駆動プ−リ
若しくは従動プ−リ又は、駆動及び従動プ−リに対し
て、上記プ−リの軸荷重の作用方向とは反対方向に力を
作用させる荷重付与手段を有する構成とする。SUMMARY OF THE INVENTION The present invention is predicated on a drive pulley or driven pulley which is used to drive an automotive accessory having a drive pulley and one or more driven pulleys. The load-applying means for applying a force to the pulley or the driving and driven pulleys in a direction opposite to the acting direction of the axial load of the pulleys.
【００１２】[0012]
【作用】駆動プ−リ若しくは従動プ−リ又は、駆動及び
従動プ−リに対して、上記プ−リの軸荷重の作用方向と
は反対方向の力が荷重付与手段によってより作用せしめ
られ、プ−リの軸荷重が低減される。The force exerted on the driving pulley or the driven pulley or the driving and driven pulley in the direction opposite to the acting direction of the axial load of the pulley is further exerted by the load applying means, The axial load on the pulley is reduced.
【００１３】[0013]
【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。Embodiments of the present invention will now be described in detail with reference to the drawings.
【００１４】図１において、１はベルト伝動装置で、駆
動プ−リ２と従動プ−リ３との間に伝動ベルト４が巻回
されている。伝動ベルト４には、外側から伝動ベルト４
を押圧するテンションプ−リ５が適用されている。In FIG. 1, reference numeral 1 is a belt transmission device, and a transmission belt 4 is wound between a drive pulley 2 and a driven pulley 3. The transmission belt 4 includes the transmission belt 4 from the outside.
A tension pulley 5 for pressing is applied.
【００１５】また、駆動及び従動プ−リ２，３には、伝
動ベルト４の内側で、各プ−リ２，３の周面に直接に接
触する荷重付与手段としての荷重付与プ−リ６，７が配
設され、各荷重付与プ−リ６，７で各プ−リ２，３を、
それらの軸荷重が作用する方向と反対方向に接触押圧し
ている。したがって、伝動ベルト４の張力Ｔ1 ，Ｔ2よ
って、例えばプ−リ２に発生する軸荷重Ｆn を打ち消す
荷重Ｆc を荷重付与プ−リ６によって付与し、プ−リ２
の軸荷重を低減するようになっている。Further, the drive and driven pulleys 2 and 3 have a load applying pulley 6 as a load applying means which comes into direct contact with the peripheral surfaces of the pulleys 2 and 3 inside the transmission belt 4. , 7 are arranged, and each of the loads 2 and 3 is connected to each of the load applying pulleys 6 and 7,
The contact pressure is applied in the direction opposite to the direction in which the axial loads act. Therefore, by the tensions T1 and T2 of the transmission belt 4, for example, a load Fc for canceling the axial load Fn generated in the pulley 2 is applied by the load applying pulley 6, and the pulley 2 is applied.
It is designed to reduce the axial load of.
【００１６】この場合、張力Ｔ1 ，Ｔ2 の方向が平行の
場合は、軸荷重は常に同一方向であるが、そうでない場
合は、軸荷重の方向は張力Ｔ1 ，Ｔ2 の大きさで異なる
ことになる。In this case, when the directions of the tensions T1 and T2 are parallel, the axial loads are always in the same direction, but if not, the directions of the axial loads differ depending on the magnitudes of the tensions T1 and T2. .
【００１７】具体的に、図２に示すように、軸荷重Ｆn
がＦx とＦy とに分解され、荷重付与プ−リ６によって
押圧する力Ｆc との関係を考える。Specifically, as shown in FIG. 2, the axial load Fn
Is decomposed into Fx and Fy, and the relationship with the force Fc pressed by the load-applying pulley 6 is considered.
【００１８】[0018]
【数４】 [Equation 4]
【００１９】[0019]
【数５】 [Equation 5]
【００２０】（但し、Ｔ1 、Ｔ2 は最大の値を用いる） α1 ：張力Ｔ1 がｘ軸となす角 α2 ：張力Ｔ2 がｘ軸となす角 Ｆx ：張力Ｔ1 ，Ｔ2 のｘ軸方向の分力の和 Ｆy ：張力Ｔ1 ，Ｔ2 のｙ軸方向の分力の和 Ｆc ：プ−リの押す力 Ｆn ：プ−リに作用する力（軸荷重） そして、Ｆc ≦Ｆx となるように力を加えてやると、(However, the maximum values are used for T1 and T2.) Α1: The angle formed by the tension T1 with the x-axis α2: The angle formed by the tension T2 with the x-axis Fx: The component force of the tensions T1, T2 in the x-axis direction Sum Fy: Sum of component forces of tensions T1 and T2 in the y-axis direction Fc: Pushing force of the pulley Fn: Force acting on the pulley (axial load) Then, apply a force so that Fc ≤ Fx. When you do
【００２１】[0021]
【数６】 [Equation 6]
【００２２】したがって、Ｆx とＦc とが略等しくなる
ようにすると、Ｆn とＦy も略等しくなり、その結果、
Ｆn が大きく低減される。Therefore, if Fx and Fc are set to be substantially equal, Fn and Fy are also set to be approximately equal, and as a result,
Fn is greatly reduced.
【００２３】また、プ−リ３の軸荷重も、同様にして、
荷重付与プ−リ７によって大きく低減される。Also, the axial load of the pulley 3 is similarly set as follows.
It is greatly reduced by the load-applying pulley 7.
【００２４】また、図３に示すようにすることもでき
る。Alternatively, the structure shown in FIG. 3 may be used.
【００２５】１１はベルト伝動装置で、駆動プ−リ１２
と従動プ−リ１３との間に伝動ベルト１４が巻回されて
いる。伝動ベルト１４には、外側から伝動ベルト１４を
押圧するテンションプ−リ１５が適用されている。Reference numeral 11 is a belt transmission, which is a drive pulley 12
A transmission belt 14 is wound between the driven pulley 13 and the driven pulley 13. A tension pulley 15 that presses the transmission belt 14 from the outside is applied to the transmission belt 14.
【００２６】そして、駆動及び従動プ−リ１２，１３
に、軸荷重が作用する方向と反対方向に力を作用させる
ようにベルト１６，１７を介して荷重付与プ−リ１８，
１９が適用されている。したがって、ベルト１６，１７
と荷重付与プ−リ１８，１９とによって荷重付与手段２
０，２１が構成される。Then, the driving and driven pulleys 12, 13
, A load-applying pulley 18, via belts 16 and 17 so as to exert a force in a direction opposite to the direction in which the axial load acts.
19 has been applied. Therefore, the belts 16, 17
And the load applying pulleys 18 and 19 for applying the load 2
0, 21 are configured.
【００２７】この場合、荷重付与プ−リ１８，１９の荷
重Ｆc を無負荷時につりあわてＦn＝０になるようにし
ておくと、プ−リ１２，１３の軸荷重Ｆは負荷上昇分と
なり、プ−リ１２，１３の軸荷重は低減される。In this case, if the load Fc of the load-applying pulleys 18 and 19 is balanced so that Fn = 0 when no load is applied, the axial load F of the pulleys 12 and 13 becomes a load increase amount, The axial load on the pulleys 12 and 13 is reduced.
【００２８】また、荷重付与プ−リ１８，１９の荷重
を、Ｆc ＝（Ｆmax ＋Ｆmin ）／２とすれば、プ−リ１
２，１３の軸荷重は、±（Ｆmax −Ｆmin ）／２の範囲
で変動することとなり、プ−リ１２，１３の軸荷重は低
減される。If the load of the load applying pulleys 18 and 19 is Fc = (Fmax + Fmin) / 2, then the pulley 1
The axial loads of Nos. 2 and 13 vary within the range of ± (Fmax-Fmin) / 2, and the axial loads of the pulleys 12 and 13 are reduced.
【００２９】[0029]
【発明の効果】本発明は、上記のように、プ−リに対し
て、軸荷重の作用方向と反対方向に力を作用させるよう
にしたから、プ−リの軸荷重を大きく低減することが可
能となる。As described above, according to the present invention, a force is applied to the pulley in the direction opposite to the direction in which the axial load acts. Therefore, the axial load of the pulley is greatly reduced. Is possible.
【図１】ベルト伝動装置のレイアウトの一例を示す説明
図である。FIG. 1 is an explanatory diagram showing an example of a layout of a belt transmission device.
【図２】プ−リに作用する力の関係を示す説明図であ
る。FIG. 2 is an explanatory diagram showing a relationship of forces acting on a pulley.
【図３】他のベルト伝動装置のレイアウトを示す説明図
である。FIG. 3 is an explanatory diagram showing a layout of another belt transmission device.
【図４】従来のベルト伝動装置のレイアウトを示す説明
図である。FIG. 4 is an explanatory diagram showing a layout of a conventional belt transmission device.
1,11 ベルト伝動装置 2,12 駆動プ−リ 3,13 従動プ−リ 4,14 平ベルト 6,7 荷重付与プ−リ（荷重付与手段） 20,21 荷重付与手段 1,11 Belt transmission device 2,12 Drive pulley 3,13 Driven pulley 4,14 Flat belt 6,7 Load applying pulley (load applying means) 20,21 Load applying means
Claims (1)
リを有し、自動車補機駆動に用いられるベルト伝動装置
であって、駆動プ−リ若しくは従動プ−リ又は、駆動及
び従動プ−リに対して、上記プ−リの軸荷重の作用方向
とは反対方向に力を作用させる荷重付与手段を有するこ
とを特徴とするベルト伝動装置。Claims: 1. A drive pulley and one or more driven pulleys.
A belt transmission device having a pulley and used for driving an automobile accessory, wherein a direction of application of an axial load of the pulley to the drive pulley or the driven pulley or the drive and the driven pulley. A belt transmission having a load applying means for exerting a force in a direction opposite to the direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5910791A JPH051750A (en) | 1991-03-22 | 1991-03-22 | Belt driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5910791A JPH051750A (en) | 1991-03-22 | 1991-03-22 | Belt driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH051750A true JPH051750A (en) | 1993-01-08 |
Family
ID=13103763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5910791A Pending JPH051750A (en) | 1991-03-22 | 1991-03-22 | Belt driving device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH051750A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5752893A (en) * | 1994-12-14 | 1998-05-19 | Lg Electronics, Inc. | Driving force transmitting apparatus for headphone stereo mechanism |
-
1991
- 1991-03-22 JP JP5910791A patent/JPH051750A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5752893A (en) * | 1994-12-14 | 1998-05-19 | Lg Electronics, Inc. | Driving force transmitting apparatus for headphone stereo mechanism |
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