JPH07293647A - Belt tension adjusting mechanism for belt driving mechanism - Google Patents
Belt tension adjusting mechanism for belt driving mechanismInfo
- Publication number
- JPH07293647A JPH07293647A JP10788894A JP10788894A JPH07293647A JP H07293647 A JPH07293647 A JP H07293647A JP 10788894 A JP10788894 A JP 10788894A JP 10788894 A JP10788894 A JP 10788894A JP H07293647 A JPH07293647 A JP H07293647A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- pulley
- shaft
- motor shaft
- motor
- 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.)
- Granted
Links
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、二つのプーリに巻き掛
けたベルトを備えたベルト駆動装置のベルト張力調整機
構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt tension adjusting mechanism for a belt driving device having a belt wound around two pulleys.
【０００２】[0002]
【従来の技術】従来、二つの平行な回転軸にそれぞれ固
定されたプーリにベルトを巻き掛けたベルト駆動装置の
ベルト張力を調整する場合、回転軸に平行な軸に回転自
在に支持されたテンションプーリを設け、二つのプーリ
の間でテンションプーリによりベルトを所定の圧力で押
し付けるようにしたものが開示されている（例えば、実
開昭６４−３１２４３号）。2. Description of the Related Art Conventionally, when adjusting a belt tension of a belt driving device in which a belt is wound around pulleys fixed to two parallel rotating shafts, a tension rotatably supported by a shaft parallel to the rotating shaft is used. It is disclosed that a pulley is provided and a tension pulley is used to press the belt between the two pulleys at a predetermined pressure (for example, Japanese Utility Model Laid-Open No. 64-31243).
【０００３】[0003]
【発明が解決しようとする課題】ところが、従来技術で
は、テンションプーリの位置を調整する位置決め機構を
二つのプーリの間の機械フレームに固定にする必要があ
り、二つのプーリの間の空間を大きく占めるため、とく
にモータの回転軸に固定したプーリにベルトを巻き掛け
た場合、位置決め機構がモータ本体や他の機械部品と干
渉したり、調整作業が難しくなるという問題があった。
本発明は、構造が簡単で調整作業が容易なベルト駆動装
置のベルト張力調整機構を提供することを目的とするも
のである。However, in the prior art, it is necessary to fix the positioning mechanism for adjusting the position of the tension pulley to the machine frame between the two pulleys, which increases the space between the two pulleys. Therefore, when the belt is wound around the pulley fixed to the rotary shaft of the motor, there is a problem that the positioning mechanism interferes with the motor main body and other mechanical parts, and adjustment work becomes difficult.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a belt tension adjusting mechanism for a belt driving device which has a simple structure and is easy to adjust.
【０００４】[0004]
【課題を解決するための手段】上記問題を解決するた
め、本発明は、第１のプーリを固定したモータ軸を備え
た駆動モータと、前記モータ軸に平行な回転軸に固定し
た第２のプーリと、前記駆動モータを固定し、かつ前記
回転軸を支持する機械フレームと、前記第１のプーリと
前記第２のプーリに巻き掛けたベルトとを備えたベルト
駆動装置のベルト張力調整機構において、前記駆動モー
タのモータ軸側に設けたフランジ部と、前記フランジ部
に設けた前記モータ軸と同心のリング状の嵌合部と、前
記フランジ部の前記モータ軸に平行で、かつ偏心した位
置に設けた支持軸と、前記支持軸に回転自在に支持した
テンションプーリと、前記機械フレームに設け、かつ前
記嵌合部が摺動し得るように嵌合する嵌合穴とを備えた
ものである。また、第１のプーリを固定したモータ軸を
備えた駆動モータと、前記モータ軸に平行な回転軸に固
定した第２のプーリと、前記駆動モータを固定し、かつ
前記回転軸を支持する機械フレームと、前記第１のプー
リと前記第２のプーリに巻き掛けたベルトとを備えたベ
ルト駆動装置のベルト張力調整機構において、前記駆動
モータのモータ軸側に設けたフランジ部と、前記フラン
ジ部に設けた前記モータ軸に対して偏心したリング状の
嵌合部と、前記機械フレームに設け、かつ前記嵌合部が
摺動し得るように嵌合する嵌合穴とを備えたものであ
る。In order to solve the above problems, the present invention provides a drive motor having a motor shaft to which a first pulley is fixed, and a second motor to a rotary shaft parallel to the motor shaft. In a belt tension adjusting mechanism of a belt driving device, which includes a pulley, a mechanical frame that fixes the drive motor and supports the rotating shaft, and a belt wound around the first pulley and the second pulley. A flange portion provided on the motor shaft side of the drive motor, a ring-shaped fitting portion provided on the flange portion and concentric with the motor shaft, and a position of the flange portion parallel to the motor shaft and eccentric A support shaft provided on the support shaft, a tension pulley rotatably supported on the support shaft, and a fitting hole provided on the machine frame and fitted so that the fitting portion can slide. is there. A drive motor having a motor shaft to which a first pulley is fixed, a second pulley fixed to a rotary shaft parallel to the motor shaft, and a machine for fixing the drive motor and supporting the rotary shaft. In a belt tension adjusting mechanism of a belt drive device including a frame, a belt wound around the first pulley and the second pulley, a flange portion provided on a motor shaft side of the drive motor, and the flange portion. A ring-shaped fitting portion that is eccentric to the motor shaft, and a fitting hole that is provided in the machine frame and that fits so that the fitting portion can slide. .
【０００５】[0005]
【作用】上記手段により、第１の発明では、モータ軸に
対して偏心した位置に設けたテンションプーリをベルト
に接触させ、さらに嵌合部を摺動させてフランジ部を回
転すると、テンションプーリがベルトに押し付けられ、
ベルトに張力を加えることができる。ベルトの張力の大
きさは、テンションプーリがベルトに接触してから、ベ
ルトが押し付けられて、テンションプーリとの接触点が
変位した長さを調整することによって決めることができ
る。また、第２の発明では、モータ軸に対して偏心した
嵌合部を摺動させてフランジ部を回転すると、二つのプ
ーリの軸間距離が変化するので、フランジ部の機械フレ
ームに対する相対的角度を変えることにより、ベルトの
張力を調整することができる。According to the first aspect of the present invention, when the tension pulley provided at a position eccentric to the motor shaft is brought into contact with the belt and the fitting portion is slid to rotate the flange portion, the tension pulley is released. Pressed against the belt,
The belt can be tensioned. The magnitude of the tension of the belt can be determined by adjusting the length by which the contact point with the tension pulley is displaced after the tension pulley contacts the belt and then the belt is pressed. Further, according to the second aspect of the invention, when the flange portion is rotated by sliding the eccentric fitting portion with respect to the motor shaft, the axial distance between the two pulleys changes, so the relative angle of the flange portion with respect to the machine frame is changed. By changing the, the tension of the belt can be adjusted.
【０００６】[0006]
【実施例】以下、本発明を図に示す実施例について説明
する。図１は本発明の第１の実施例を示す平面図、図２
はその正断面図である。図において、ベルト駆動装置１
０は、機械フレーム１に二つの嵌合穴１１および１２を
設け、嵌合穴１１の周辺には円周方向に等間隔に４個の
ねじ穴１３を設けてある。駆動モータ２はモータ軸２１
の突出する側にフランジ部２２を設け、フランジ部２２
にはモータ軸２１と同心のリング状の嵌合部２３を設け
て、嵌合穴１１に回転し得るように嵌合させてある。駆
動モータ２のフランジ部２２には、円周方向に等間隔に
４か所に円周方向に伸びる長穴２４を設け、駆動モータ
２の位置を回転方向に調整して、ねじ穴１３にボルト２
５を螺合することにより固定するようにしてある。モー
タ軸２１には第１のプーリ３を固定してある。機械フレ
ーム１に設けた嵌合穴１２には、モータ軸２１に平行な
回転軸４を軸受４１を介して支持し、回転軸４には第２
のプーリ５を固定してある。第１のプーリ３と第２のプ
ーリ５にはベルト６を巻き掛けてある。駆動モータ２の
フランジ部２２には、モータ軸２１に平行で、偏心した
位置に支持軸７を固定し、支持軸７にはテンションプー
リ８を軸受８１を介して支持してある。第１のプーリ３
と第２のプーリ５に巻き掛けたベルト６の張力を調整す
る場合、テンションプーリ８をベルト６に接触させ、嵌
合部２３を嵌合穴１１に回転方向に摺動させてながら、
図１では時計回りにフランジ部２２を回転して、テンシ
ョンプーリ８によってベルト６を押し付け、ベルト６に
張力を加える。ベルト６の張力の大きさは、テンション
プーリ８がベルト６に接触してから、ベルト６が押し付
けられて、テンションプーリ８との接触点の変位した長
さによって決まるが、接触点の変位した長さはフランジ
部２２の回転方向の位置を調整することによって決ま
る。なお、フランジ部２２を機械フレーム１に固定する
場合、フランジ部２２に設けた長穴２４にボルト２５を
通して固定するので、長穴２４の長さの範囲でフランジ
部２２の回転方向の位置を調整できる。したがって、テ
ンションプーリ８を機械フレーム１に設けず、駆動モー
タ２のフランジ部２２に取り付けて、フランジ部２２を
回転するだけで張力を調整できるので、他の機械との干
渉もなくなり、張力の調整作業も簡単になる。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a first embodiment of the present invention, and FIG.
Is a front sectional view thereof. In the figure, the belt driving device 1
In No. 0, two fitting holes 11 and 12 are provided in the machine frame 1, and four screw holes 13 are provided around the fitting hole 11 at equal intervals in the circumferential direction. The drive motor 2 has a motor shaft 21.
The flange portion 22 is provided on the protruding side of the
Is provided with a ring-shaped fitting portion 23 which is concentric with the motor shaft 21 and is fitted into the fitting hole 11 so as to be rotatable. The flange portion 22 of the drive motor 2 is provided with four elongated holes 24 extending in the circumferential direction at equal intervals in the circumferential direction, the position of the drive motor 2 is adjusted in the rotational direction, and the screw holes 13 are bolted. Two
5 is fixed by screwing. The first pulley 3 is fixed to the motor shaft 21. A rotary shaft 4 parallel to the motor shaft 21 is supported in a fitting hole 12 provided in the machine frame 1 via a bearing 41, and the rotary shaft 4 has a second shaft.
The pulley 5 of is fixed. A belt 6 is wound around the first pulley 3 and the second pulley 5. The support shaft 7 is fixed to the flange portion 22 of the drive motor 2 at an eccentric position parallel to the motor shaft 21, and a tension pulley 8 is supported on the support shaft 7 via a bearing 81. First pulley 3
When adjusting the tension of the belt 6 wound around the second pulley 5, while the tension pulley 8 is brought into contact with the belt 6 and the fitting portion 23 is slid in the fitting hole 11 in the rotation direction,
In FIG. 1, the flange portion 22 is rotated clockwise, and the tension pulley 8 presses the belt 6 to apply tension to the belt 6. The magnitude of the tension of the belt 6 depends on the displaced length of the contact point with the tension pulley 8 when the belt 6 is pressed after the tension pulley 8 comes into contact with the belt 6 and the displaced length of the contact point. The size is determined by adjusting the position of the flange portion 22 in the rotation direction. When the flange portion 22 is fixed to the machine frame 1, the bolts 25 are fixed through the long holes 24 provided in the flange portion 22, so that the position of the flange portion 22 in the rotational direction is adjusted within the range of the length of the long hole 24. it can. Therefore, the tension pulley 8 is not provided on the machine frame 1, but the tension can be adjusted only by attaching it to the flange portion 22 of the drive motor 2 and rotating the flange portion 22, so that interference with other machines is eliminated and tension adjustment is performed. Work becomes easy.
【０００７】図３は第２の実施例を示す平面図、図４は
その正断面図である。ベルト駆動装置１０は、機械フレ
ーム１に二つの嵌合穴１１および１２を設け、嵌合穴１
１の周辺には円周方向に等間隔に４個のねじ穴１３を設
けてある。駆動モータ２はモータ軸２１の突出する側に
フランジ部２２を設け、フランジ部２２にはモータ軸２
１に対して偏心量ｅだけ偏心した嵌合部２３を設けて、
嵌合穴１１に回転し得るように嵌合させてある。駆動モ
ータ２のフランジ部２２には、円周方向に等間隔に４か
所に円周方向に伸びる長穴２４を設け、駆動モータ２の
位置を回転方向に調整して、ねじ穴１２にボルト２５を
螺合することにより固定すようにしてある。モータ軸２
１には第１のプーリ３を固定してある。機械フレーム１
に設けた嵌合穴１２には、モータ軸２１に平行な回転軸
４を軸受４１を介して支持し、回転軸４には第２のプー
リ５を固定してある。第１のプーリ３と第２のプーリ５
にはベルト６を巻き掛けてある。第１のプーリ３と第２
のプーリ５に巻き掛けたベルト６の張力を調整する場
合、嵌合部２３を嵌合穴１１に回転方向に摺動させてフ
ランジ部２２を回転すると、第１のプーリ３と第２のプ
ーリ５の軸間距離が変化するので、フランジ部２２の機
械フレーム１に対する相対的角度を変えることにより、
ベルトの張力を調整することができる。この場合、テン
ションプーリを設ける必要がないので、ベルトの張力調
整機構の構造が簡単になる。FIG. 3 is a plan view showing the second embodiment, and FIG. 4 is a front sectional view thereof. The belt driving device 10 has two fitting holes 11 and 12 provided in the machine frame 1,
Four screw holes 13 are provided in the periphery of 1 at equal intervals in the circumferential direction. The drive motor 2 is provided with a flange portion 22 on the protruding side of the motor shaft 21, and the flange portion 22 has the flange portion 22.
1 is provided with a fitting portion 23 that is eccentric by an eccentric amount e,
It is fitted in the fitting hole 11 so as to be rotatable. The flange portion 22 of the drive motor 2 is provided with elongated holes 24 extending in the circumferential direction at four locations at equal intervals in the circumferential direction, the position of the drive motor 2 is adjusted in the rotational direction, and the screw holes 12 are bolted. 25 is fixed by screwing. Motor shaft 2
A first pulley 3 is fixed at 1. Machine frame 1
The rotary shaft 4 parallel to the motor shaft 21 is supported in the fitting hole 12 provided in the shaft via a bearing 41, and the second pulley 5 is fixed to the rotary shaft 4. First pulley 3 and second pulley 5
A belt 6 is wrapped around the. First pulley 3 and second
When the tension of the belt 6 wound around the pulley 5 is adjusted, when the fitting portion 23 is slid in the fitting hole 11 in the rotation direction and the flange portion 22 is rotated, the first pulley 3 and the second pulley 3 are rotated. Since the inter-axis distance of 5 changes, by changing the relative angle of the flange portion 22 with respect to the machine frame 1,
Belt tension can be adjusted. In this case, since it is not necessary to provide the tension pulley, the structure of the belt tension adjusting mechanism is simplified.
【０００８】[0008]
【発明の効果】以上述べたように、本発明によれば、二
つのプーリに巻き掛けたベルトの張力を調整する場合、
機械フレームに取りつけるモータのフランジ部を回転す
るだけで張力の調整ができるので、構造が簡単で調整作
業が容易なベルトの張力調整機構を提供できる効果があ
る。As described above, according to the present invention, when adjusting the tension of the belt wound around the two pulleys,
Since the tension can be adjusted simply by rotating the flange portion of the motor mounted on the machine frame, there is an effect that a belt tension adjusting mechanism having a simple structure and easy adjustment work can be provided.
【図１】 本発明の第１の実施例を示す平面図である。FIG. 1 is a plan view showing a first embodiment of the present invention.
【図２】 本発明の第１の実施例を示す正面図である。FIG. 2 is a front view showing the first embodiment of the present invention.
【図３】 本発明の第２の実施例を示す平面図である。FIG. 3 is a plan view showing a second embodiment of the present invention.
【図４】 本発明の第２の実施例を示す正面図である。FIG. 4 is a front view showing a second embodiment of the present invention.
１ 機械フレーム、１０ ベルト駆動装置、１１、１２
嵌合穴、１３ ねじ穴、２ 駆動モータ、２１ モー
タ軸、２２ フランジ部、２３ 嵌合部、２４長穴、２
５ ボルト、３ 第１のプーリ、４ 回転軸、４１ 軸
受、５ 第２のプーリ、６ ベルト、７ 支持軸、８
テンションプーリ1 mechanical frame, 10 belt driving device, 11, 12
Fitting hole, 13 screw hole, 2 drive motor, 21 motor shaft, 22 flange part, 23 fitting part, 24 long hole, 2
5 bolt, 3 first pulley, 4 rotating shaft, 41 bearing, 5 second pulley, 6 belt, 7 support shaft, 8
Tension pulley
Claims (2)
た駆動モータと、前記モータ軸に平行な回転軸に固定し
た第２のプーリと、前記駆動モータを固定し、かつ前記
回転軸を支持する機械フレームと、前記第１のプーリと
前記第２のプーリに巻き掛けたベルトとを備えたベルト
駆動装置のベルト張力調整機構において、前記駆動モー
タのモータ軸側に設けたフランジ部と、前記フランジ部
に設けた前記モータ軸と同心のリング状の嵌合部と、前
記モータ軸に平行で、かつ前記フランジ部の前記モータ
軸に対して偏心した位置に設けた支持軸と、前記支持軸
に回転自在に支持したテンションプーリと、前記機械フ
レームに設け、かつ前記嵌合部が摺動し得るように嵌合
する嵌合穴とを備えたことを特徴とするベルト駆動装置
のベルト張力調整機構。1. A drive motor having a motor shaft to which a first pulley is fixed, a second pulley fixed to a rotary shaft parallel to the motor shaft, and the drive motor fixed to the rotary shaft. In a belt tension adjusting mechanism of a belt drive device including a supporting mechanical frame, a belt wound around the first pulley and the second pulley, a flange portion provided on the motor shaft side of the drive motor, A ring-shaped fitting portion concentric with the motor shaft provided on the flange portion, a support shaft provided in a position parallel to the motor shaft and eccentric to the motor shaft of the flange portion, and the support. A belt tension of a belt drive device, comprising: a tension pulley rotatably supported on a shaft; and a fitting hole provided in the machine frame and fitted so that the fitting portion can slide. Adjuster Structure.
た駆動モータと、前記モータ軸に平行な回転軸に固定し
た第２のプーリと、前記駆動モータを固定し、かつ前記
回転軸を支持する機械フレームと、前記第１のプーリと
前記第２のプーリに巻き掛けたベルトとを備えたベルト
駆動装置のベルト張力調整機構において、前記駆動モー
タのモータ軸側に設けたフランジ部と、前記フランジ部
に設けた前記モータ軸に対して偏心したリング状の嵌合
部と、前記機械フレームに設け、かつ前記嵌合部が摺動
し得るように嵌合する嵌合穴とを備えたことを特徴とす
るベルト駆動装置のベルト張力調整機構。2. A drive motor having a motor shaft to which a first pulley is fixed, a second pulley fixed to a rotation shaft parallel to the motor shaft, the drive motor, and the rotation shaft. In a belt tension adjusting mechanism of a belt drive device including a supporting mechanical frame, a belt wound around the first pulley and the second pulley, a flange portion provided on the motor shaft side of the drive motor, A ring-shaped fitting portion provided on the flange portion and eccentric to the motor shaft, and a fitting hole provided on the machine frame and fitted so that the fitting portion can slide A belt tension adjusting mechanism for a belt driving device, which is characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10788894A JP3324668B2 (en) | 1994-04-21 | 1994-04-21 | Belt tension adjustment mechanism for belt drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10788894A JP3324668B2 (en) | 1994-04-21 | 1994-04-21 | Belt tension adjustment mechanism for belt drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07293647A true JPH07293647A (en) | 1995-11-07 |
| JP3324668B2 JP3324668B2 (en) | 2002-09-17 |
Family
ID=14470624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10788894A Expired - Fee Related JP3324668B2 (en) | 1994-04-21 | 1994-04-21 | Belt tension adjustment mechanism for belt drive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3324668B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6938722B2 (en) | 2002-01-29 | 2005-09-06 | Gates Unitta Asia Company | Electric power steering apparatus |
| JP2005240927A (en) * | 2004-02-27 | 2005-09-08 | Shin Caterpillar Mitsubishi Ltd | Belt tension adjusting structure of power transmission mechanism |
| US7591204B2 (en) | 2003-05-06 | 2009-09-22 | Nsk Ltd. | Belt speed reducing apparatus for electric power steering apparatus and electric power steering apparatus |
| JP2013040667A (en) * | 2011-08-18 | 2013-02-28 | Ricoh Co Ltd | Tension adjusting mechanism, driving device, and image forming apparatus |
| CN104960849A (en) * | 2015-07-03 | 2015-10-07 | 苏州昌飞自动化设备厂 | Belt driving device and belt tension adjusting device of belt friction test machine |
| CN104965528A (en) * | 2015-07-03 | 2015-10-07 | 苏州昌飞自动化设备厂 | Belt friction testing and position-correcting apparatus of belt frictional force test machine |
| CN104990662A (en) * | 2015-07-17 | 2015-10-21 | 苏州昌飞自动化设备厂 | Belt friction force testing machine |
| KR20160149704A (en) * | 2015-06-19 | 2016-12-28 | 현대모비스 주식회사 | Power steering apparatus |
-
1994
- 1994-04-21 JP JP10788894A patent/JP3324668B2/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7490696B2 (en) | 2002-01-29 | 2009-02-17 | Jtekt Corporation | Electric power steering apparatus |
| US7191866B2 (en) | 2002-01-29 | 2007-03-20 | Koyo Seiko Co., Ltd. | Electric power steering apparatus |
| US7237647B2 (en) | 2002-01-29 | 2007-07-03 | Jtekt Corporation | Electric power steering apparatus |
| US7360624B2 (en) | 2002-01-29 | 2008-04-22 | Jtekt Corporation | Electric power steering apparatus |
| US7413052B2 (en) | 2002-01-29 | 2008-08-19 | Jtekt Corporation | Electric power steering apparatus |
| US6938722B2 (en) | 2002-01-29 | 2005-09-06 | Gates Unitta Asia Company | Electric power steering apparatus |
| US7591204B2 (en) | 2003-05-06 | 2009-09-22 | Nsk Ltd. | Belt speed reducing apparatus for electric power steering apparatus and electric power steering apparatus |
| JP2005240927A (en) * | 2004-02-27 | 2005-09-08 | Shin Caterpillar Mitsubishi Ltd | Belt tension adjusting structure of power transmission mechanism |
| JP2013040667A (en) * | 2011-08-18 | 2013-02-28 | Ricoh Co Ltd | Tension adjusting mechanism, driving device, and image forming apparatus |
| KR20160149704A (en) * | 2015-06-19 | 2016-12-28 | 현대모비스 주식회사 | Power steering apparatus |
| CN104960849A (en) * | 2015-07-03 | 2015-10-07 | 苏州昌飞自动化设备厂 | Belt driving device and belt tension adjusting device of belt friction test machine |
| CN104965528A (en) * | 2015-07-03 | 2015-10-07 | 苏州昌飞自动化设备厂 | Belt friction testing and position-correcting apparatus of belt frictional force test machine |
| CN104990662A (en) * | 2015-07-17 | 2015-10-21 | 苏州昌飞自动化设备厂 | Belt friction force testing machine |
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| Publication number | Publication date |
|---|---|
| JP3324668B2 (en) | 2002-09-17 |
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