JPS5847592B2 - Belt transmission device with automatic tension adjustment mechanism - Google Patents
Belt transmission device with automatic tension adjustment mechanismInfo
- Publication number
- JPS5847592B2 JPS5847592B2 JP9323480A JP9323480A JPS5847592B2 JP S5847592 B2 JPS5847592 B2 JP S5847592B2 JP 9323480 A JP9323480 A JP 9323480A JP 9323480 A JP9323480 A JP 9323480A JP S5847592 B2 JPS5847592 B2 JP S5847592B2
- Authority
- JP
- Japan
- Prior art keywords
- belt
- wheel
- driven
- axle center
- axis
- 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
Links
- 230000007246 mechanism Effects 0.000 title claims description 13
- 230000005540 biological transmission Effects 0.000 title claims description 11
- 230000000694 effects Effects 0.000 description 3
- 230000002040 relaxant effect Effects 0.000 description 1
Landscapes
- Gear Transmission (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Transmission Devices (AREA)
Description
【発明の詳細な説明】
本発明はベルトの張力を自動調節する機構を有するベル
ト伝動装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a belt transmission device having a mechanism for automatically adjusting belt tension.
従来のベルト伝動機構の一つであるタイミングベルト駆
動装置は、第１図に示すように駆動車１と従動車２にタ
イミングベルト３を掛架した機構であるが、大きな駆動
力を与えると、駆動側のベルト３ａが弾性によって伸長
する為に弛緩側のベルト３ｂが弛み、その結果従動車２
のベルト進入側の歯先へ弛緩したベルトの歯先が乗り上
げて空転をするなどの不具合を生じた。A timing belt drive device, which is one of the conventional belt transmission mechanisms, is a mechanism in which a timing belt 3 is suspended between a driving wheel 1 and a driven wheel 2, as shown in FIG. 1. However, when a large driving force is applied, Since the belt 3a on the driving side stretches due to elasticity, the belt 3b on the slack side becomes slack, and as a result, the driven wheel 2
This caused problems such as the loose belt tooth tip riding up on the tooth tip on the belt entry side, causing the belt to spin idly.
この欠点を除くには弛緩側のベルト３ｂにはね４により
付勢したテンションローラ５を設けて弛緩を防止するの
が一般的である。To eliminate this drawback, it is common to provide a tension roller 5 urged by a spring 4 on the slack side belt 3b to prevent loosening.
しかし、この場合は弛緩側のベルト３ｂの弛み代が第１
図の鎖線３ ｂ／で示すように大きくなると、テンショ
ンローラ５のばね４の伸び量も大きくなるため、ベルト
３の押し上げ力が弱まって、駆動力に対する弛緩側ベル
ト３ｂの張力が反比例することになる。However, in this case, the slack amount of the belt 3b on the slack side is the first
When the tension increases as shown by the chain line 3b/ in the figure, the amount of stretch of the spring 4 of the tension roller 5 also increases, which weakens the pushing force of the belt 3 and causes the tension of the slack side belt 3b to become inversely proportional to the driving force. Become.
つまり、大きな駆動側ベルト３ａの張力に対して弛緩側
ベルト３ｂの張力が小さくなり、その結果空転を生じ易
くなるなど、駆動力に応じたベルト張力の調節機構とし
て第１図の従来装置は理想的なものではなかった。In other words, the tension of the slack side belt 3b is small compared to the large tension of the drive side belt 3a, and as a result, slippage is likely to occur.The conventional device shown in Fig. 1 is ideal as a belt tension adjustment mechanism according to the driving force. It wasn't something like that.
本発明は、このような欠点を解消する為になされたもの
で、駆動車と従動車の軸間距離が駆動力に応じて変位し
、自動的に最適なベルト張力を得ることによって、空転
を防止し、ベルトの耐久性の向上を図ることを目的とす
るものである。The present invention was made to eliminate these drawbacks, and the distance between the axes of the driving wheel and the driven wheel is changed according to the driving force, and by automatically obtaining the optimum belt tension, slipping can be prevented. The purpose is to prevent this and improve the durability of the belt.
以下、本発明の実施例を図面に基づいて説明する。Embodiments of the present invention will be described below based on the drawings.
第２図は第１発明の第１実施例を示すもので、この実施
例においては、一つの線上Ａに従動車１０の軸心１１と
内輪駆動車１２の軸心１３を設定し、内輪駆動車１２に
は軸心が変位できる外輪駆動車１４をギヤ機構により内
接噛合すると共に、従動車軸心１１と内輪駆動車軸心１
３を結ぶ線分Ａと内輪駆動車軸心１３からの垂線Ｂによ
って仕切られた弛緩側偏心区域１５に外輪駆動車１４の
軸心１６が任意量偏心して位置するようにタイミングベ
ルト１７の長さを設定する。FIG. 2 shows a first embodiment of the first invention. In this embodiment, the axis 11 of the driven vehicle 10 and the axis 13 of the inner wheel drive vehicle 12 are set on one line A, and the inner wheel drive An outer wheel drive wheel 14 whose shaft center can be displaced is internally engaged with the wheel 12 by a gear mechanism, and a driven wheel shaft center 11 and an inner wheel drive shaft center 1 are connected to each other.
The length of the timing belt 17 is determined so that the shaft center 16 of the outer wheel drive vehicle 14 is located eccentrically by a given amount in the slack side eccentric area 15 partitioned by the line segment A connecting the points 3 and the perpendicular line B from the inner wheel drive axle center 13. Set.
１７ａはタミングベルト１７の駆動側、１７ｂは弛緩側
である。17a is the drive side of the timing belt 17, and 17b is the slack side.
次に、第３図により第２発明の実施例を説明する。Next, an embodiment of the second invention will be described with reference to FIG.
この実施例においては、一つの線上人に駆動車２０の軸
心２１と内輪従動車２２の軸心２３を設定し、内輪従動
車２２には軸心が変位できる外輪従動車２４をギヤ機構
により内接噛合すると共に、駆動車軸心２１と内輪従動
車軸心２３を結ぶ線分Ａと内輪従動車軸心２３からの垂
線Ｂによって仕切られた弛緩側偏心区域２５に外輪従動
車２４の軸心２６が任意量偏心して位置するようにタイ
ミングベルト２７の長さを設定する。In this embodiment, the axial center 21 of the driving wheel 20 and the axial center 23 of the inner driven wheel 22 are set in one lineman, and the outer driven wheel 24 whose axial center can be displaced is attached to the inner driven wheel 22 by a gear mechanism. The shaft center 26 of the outer wheel driven wheel 24 is internally meshed with the slack side eccentric area 25 partitioned by a line segment A connecting the driving axle center 21 and the inner ring driven axle center 23 and a perpendicular line B from the inner ring driven axle center 23. The length of the timing belt 27 is set so that it is positioned eccentrically by an arbitrary amount.
２７ａはタイミングベルトの１駆動側、２７ｂは弛緩側
である。27a is one drive side of the timing belt, and 27b is a slack side.
つまり、第３図の第２発明の実施例は、前記第２図の第
１発明の実施例の駆動車の偏心するギヤ機構を、従動車
の方へ組み入れ替えたものである。That is, in the embodiment of the second invention shown in FIG. 3, the eccentric gear mechanism of the drive wheel of the embodiment of the first invention shown in FIG. 2 is replaced with the driven wheel.
次に、上述のように構成した本発明装置の作用効果を第
４図において説明すると、従動車１０と外輪駆動車１４
に接する駆動側ベルト１７ａの延長線上の点Ｔの垂線Ｃ
と弛緩側ベルト１７ｂの延長線上の点■の垂線Ｄが内輪
駆動車１２と外輪駆動車１４の内接する点Ｓと交わると
きに、内輪駆動車１２を時計方向に回動し、外輪駆動車
１４に掛架した駆動側ベルＮ７ａにＸなる駆動張力を与
えたとすると、垂線Ｃ，Ｄの長さをそれぞれＴＳ及びＩ
ｓとした場合、弛緩側ベルト１７ｂに与えられる張力は
野×Ｘとなる。Next, the operation and effect of the device of the present invention configured as described above will be explained with reference to FIG. 4.
Perpendicular line C of point T on the extension line of drive side belt 17a that is in contact with
When the perpendicular D to the point (2) on the extension line of the slack side belt 17b intersects the point S where the inner wheel drive vehicle 12 and the outer wheel drive vehicle 14 are inscribed, the inner wheel drive vehicle 12 is rotated clockwise and the outer wheel drive vehicle 14 is rotated clockwise. If a driving tension of X is applied to the driving bell N7a suspended from the
s, the tension applied to the slack side belt 17b is xX.
ＩＳ
従って、弛緩側ベルＮ ７ｂの張力は、駆動側ベルＮ７
ａに生ずる張力よりも過大になることはなく、且つ駆動
側ベルＮ ７ａの張力にほぼ比例した弛緩側ベルＮ７ｂ
の張力となるから、従来例のように負荷の増加によって
生ずる従動車進入側へのベルト１７の乗り上げ、及びそ
の結果生ずる空転を防止することができる。IS Therefore, the tension of the relaxing side bell N7b is equal to the tension of the driving side bell N7.
The tension on the relaxation side bell N7b is not greater than the tension generated on the drive side bell N7a and is approximately proportional to the tension on the driving side bell N7a.
Therefore, it is possible to prevent the belt 17 from riding on the driven vehicle entry side, which would occur due to an increase in load, as in the conventional example, and to prevent the belt from slipping as a result.
なお、第３図の第２発明の実施例の作用効果も、上記第
１発明の実施例と同様であるから説明は省略する。The operation and effect of the embodiment of the second invention shown in FIG. 3 are also the same as those of the embodiment of the first invention, so a description thereof will be omitted.
本発明のベルト伝動装置は自転車等の駆動装置として適
しているが、本発明はこの他多くの装置にも利用及び応
用できるものである。Although the belt transmission device of the present invention is suitable as a drive device for bicycles and the like, the present invention can also be used and applied to many other devices.
上述のように本発明は従来装置のようにテンションロー
ラを用いる必要がなく、駆動車と従動車の軸間距離が駆
動力の大きさにほぼ比例するように自動的に変位して、
ベルトの駆動側張力に適合した弛緩側張力が得られるよ
うにして、その結果ベルト伝動の空転を防止すると共に
、ベルトの耐久性を向上することができる。As described above, the present invention does not require the use of a tension roller as in conventional devices, and the distance between the axes of the driving wheel and the driven wheel is automatically displaced in proportion to the magnitude of the driving force.
By making it possible to obtain a tension on the slack side that matches the tension on the driving side of the belt, it is possible to prevent idle rotation of the belt transmission and improve the durability of the belt.
また本発明のベルト伝動装置は、゜駆動抵抗を各負荷時
においてそれぞれ最良に保つことができると共に、ベル
ト伝動の自動張力調節機構として汎用性に富んでいる等
、多くのすぐれた効果がある。Further, the belt transmission device of the present invention has many excellent effects such as being able to maintain the driving resistance at the optimum level under each load and being highly versatile as an automatic tension adjustment mechanism for belt transmission.
第１図は従来のタイミングベルト駆動装置の一部切欠側
面図、第２図は第ｌ発明のベルト伝動装置の実施例を示
す一部切欠側面図、第３図は第２発明の実施例を示す一
部切欠側面図、第４図は本発明の作用説明図である。
１０・・・・・・従動車、１１・・・・・・従動車軸心
、１２・・・・・・内輪駆動車、１３・・・・・．・内
輪駆動車軸心、１４・・・・・・外輪駆動車、１５・・
・・・・弛緩側偏心区域、１６・・・・・・外輪駆動車
軸心、１７・・・・・・タイミングベルト、１７ａ・・
・・・・駆動側ベルト、１７ｂ・・・・・・弛緩側ベル
ト。FIG. 1 is a partially cutaway side view of a conventional timing belt drive device, FIG. 2 is a partially cutaway side view showing an embodiment of the belt transmission device of the first invention, and FIG. 3 is a partially cutaway side view showing an embodiment of the belt transmission device of the first invention. The partially cutaway side view shown in FIG. 4 is an explanatory view of the operation of the present invention. 10... Driven vehicle, 11... Driven axle center, 12... Inner wheel drive vehicle, 13...・Inner wheel drive axle center, 14... Outer wheel drive vehicle, 15...
... Relaxed side eccentric area, 16 ... Outer wheel drive axle center, 17 ... Timing belt, 17a ...
... Drive side belt, 17b... Loose side belt.
Claims (1)
１２の軸心１３を設定し、内輪駆動車１２には軸心が変
位できる外輪駆動車１４をギヤ機構により内接噛合する
と共に、従動車軸心１１と内輪駆動車軸心１３を結ぶ線
分Ａと内輪駆動車軸心１３からの垂線Ｂによって仕切ら
れた弛緩側偏心区域１５に外輪駆動車１４の軸心１６が
任意量偏心して位置するようにベルト１７の長さを設定
して成る自動張力調節機構を有するベルト伝動装置。 ２ 一つの線上人に駆動車２０の軸心２１と内輪従動車
２２の軸心２３を設定し、内輪従動車２２には軸心が変
位できる外輪従動車２４をギヤ機構により内接噛合する
と共に、駆動車軸心２１と内輪従動車軸心２３を結ぶ線
分Ａと内輪従動車軸心２３からの垂線Ｂによって仕切ら
れた弛緩側偏心区域２５に外輪従動車２４の軸心２６が
任意量偏心して位置するようにベルト２７の長さを設定
して成る自動張力調節機構を有するベルト伝動装置。[Claims] 1. The axis 11 of the driven vehicle 10 and the axis 13 of the inner wheel drive vehicle 12 are set on one line A, and the inner wheel drive vehicle 12 is equipped with an outer wheel drive vehicle 14 whose axis can be displaced using a gear mechanism. The shaft center 16 of the outer wheel drive vehicle 14 is inwardly meshed with the shaft center 16 of the outer wheel drive vehicle 14 in a relaxed side eccentric area 15 partitioned by a line segment A connecting the driven axle center 11 and the inner drive axle center 13 and a perpendicular line B from the inner drive axle center 13. A belt transmission device having an automatic tension adjustment mechanism in which the length of the belt 17 is set so that the belt is eccentrically positioned by an arbitrary amount. 2. The axis 21 of the drive wheel 20 and the axis 23 of the inner driven wheel 22 are set in one line member, and the outer driven wheel 24 whose axis can be displaced is internally meshed with the inner driven wheel 22 by a gear mechanism. , the shaft center 26 of the outer wheel driven wheel 24 is eccentrically positioned by an arbitrary amount in a relaxed side eccentric area 25 partitioned by a line segment A connecting the driving axle center 21 and the inner ring driven axle center 23 and a perpendicular line B from the inner ring driven axle center 23. A belt transmission device having an automatic tension adjustment mechanism that sets the length of the belt 27 so as to
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9323480A JPS5847592B2 (en) | 1980-07-10 | 1980-07-10 | Belt transmission device with automatic tension adjustment mechanism |
| GB8040214A GB2079892B (en) | 1980-07-10 | 1980-12-16 | Belt gearing |
| FR8100020A FR2486609A1 (en) | 1980-07-10 | 1981-01-02 | GEAR FOR BELT TRANSMISSION |
| IT8119122A IT1135027B (en) | 1980-07-10 | 1981-01-14 | BELT TRANSMISSION SYSTEM |
| DE19813100922 DE3100922A1 (en) | 1980-07-10 | 1981-01-14 | "BELT DRIVE" |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9323480A JPS5847592B2 (en) | 1980-07-10 | 1980-07-10 | Belt transmission device with automatic tension adjustment mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5718841A JPS5718841A (en) | 1982-01-30 |
| JPS5847592B2 true JPS5847592B2 (en) | 1983-10-24 |
Family
ID=14076836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9323480A Expired JPS5847592B2 (en) | 1980-07-10 | 1980-07-10 | Belt transmission device with automatic tension adjustment mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5847592B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004069631A1 (en) * | 2003-02-03 | 2004-08-19 | Koyo Seiko Co., Ltd. | Electric power-steering device |
| JP2011208707A (en) * | 2010-03-29 | 2011-10-20 | Daihatsu Motor Co Ltd | Belt type power transmission device of internal combustion engine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0424889Y2 (en) * | 1986-05-30 | 1992-06-12 | ||
| JP2512569Y2 (en) * | 1990-08-29 | 1996-10-02 | 株式会社クボタ | Granule storage structure in paddy work machine |
-
1980
- 1980-07-10 JP JP9323480A patent/JPS5847592B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004069631A1 (en) * | 2003-02-03 | 2004-08-19 | Koyo Seiko Co., Ltd. | Electric power-steering device |
| JP2011208707A (en) * | 2010-03-29 | 2011-10-20 | Daihatsu Motor Co Ltd | Belt type power transmission device of internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5718841A (en) | 1982-01-30 |
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