JPH11108137A - Traction transmitting device - Google Patents
Traction transmitting deviceInfo
- Publication number
- JPH11108137A JPH11108137A JP28798297A JP28798297A JPH11108137A JP H11108137 A JPH11108137 A JP H11108137A JP 28798297 A JP28798297 A JP 28798297A JP 28798297 A JP28798297 A JP 28798297A JP H11108137 A JPH11108137 A JP H11108137A
- Authority
- JP
- Japan
- Prior art keywords
- planetary
- roller
- shaft
- bush
- radial direction
- 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
Landscapes
- Friction Gearing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、減速機や増速機と
して用いられる遊星機構を備えたトラクションドライブ
式の伝動装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traction drive type transmission having a planetary mechanism used as a speed reducer or a speed increaser.
【０００２】[0002]
【従来の技術】前記トラクション伝動装置として、ケー
スに高速軸と低速軸が同軸線上に対向して支承されると
共にそれらの間に遊星機構が介設され、該遊星機構が、
高速軸にそれと同心に連結された太陽ローラと、太陽ロ
ーラと同軸線上にケースに対して回転不能に設けられた
軌道リングと、太陽ローラの回りに等角度間隔で配置さ
れ、太陽ローラに外接されると共に軌道リングに内接さ
れ、且つ軸線方向への移動を制限された複数の遊星ロー
ラと、各遊星ローラをブッシュを介して回転可能に且つ
太陽ローラの半径方向に変位可能に支承する遊星軸と、
各遊星軸を支持すると共に低速軸にそれと同心に連結さ
れたキャリアと、各遊星ローラと太陽ローラ及び軌道リ
ングとの各接触面に所要の圧接力を与える圧接力発生手
段とからなるものが実公昭５６−３５５６７号公報等に
開示されている。2. Description of the Related Art As the traction transmission, a high-speed shaft and a low-speed shaft are supported on a case so as to face each other on a coaxial line, and a planetary mechanism is interposed between them.
A sun roller concentrically connected to the high-speed shaft, a track ring provided non-rotatably with respect to the case on a coaxial line with the sun roller, and arranged at equal angular intervals around the sun roller and circumscribed to the sun roller. A plurality of planetary rollers which are inscribed in the orbital ring and whose movement in the axial direction is restricted, and a planetary shaft which rotatably supports each planetary roller via a bush and is displaceable in the radial direction of the sun roller. When,
A carrier which supports each planetary shaft and is concentrically connected to the low-speed shaft and a pressing force generating means for applying a required pressing force to each contact surface between each planetary roller, the sun roller and the orbital ring. It is disclosed in, for example, JP-B-56-35567.
【０００３】前記トラクション伝動装置では、各遊星軸
により遊星ローラを太陽ローラの半径方向に変位可能に
支承させるに際して、遊星軸がブッシュの軸線方向の溝
孔に太陽ローラの半径方向に相対変位可能に摺嵌される
と共にブッシュが遊星ローラの筒孔に摺嵌され、各遊星
軸外周に太陽ローラの半径方向に沿って平坦面が平行に
形成され、且つ各ブッシュ外周に遊星ローラの筒孔内周
の円柱面と摺接可能な円柱面が形成されると共に各ブッ
シュの溝孔内周に遊星軸の各平坦面と摺接可能な平坦面
が太陽ローラの半径方向に沿って平行に形成されてい
る。In the traction transmission device, when each planetary shaft supports the planetary roller so as to be displaceable in the radial direction of the sun roller, the planetary shaft can be relatively displaced in the axial groove of the bush in the radial direction of the sun roller. The bush is slidably fitted and the bush is slid into the cylindrical hole of the planetary roller, a flat surface is formed parallel to the outer circumference of each planet shaft along the radial direction of the sun roller, and the inner circumference of the cylindrical hole of the planetary roller is formed on the outer circumference of each bush. And a flat surface that can slide and contact with each flat surface of the planetary shaft is formed on the inner periphery of the slot of each bush in parallel with the radial direction of the sun roller. I have.
【０００４】前記構成によれば、各遊星ローラは、その
筒孔内周の円柱面をブッシュ外周の円柱面に回り対偶で
摺接させられて該ブッシュの回りに回転可能とされ、ま
た各ブッシュは、前記のように各遊星ローラを回転可能
に支承しつつ、その溝孔内周の各平坦面を遊星軸外周の
各平坦面に滑り対偶で摺接させられて太陽ローラの半径
方向に変位可能とされている。したがって、前記構成に
おいて、圧接力発生手段により各遊星ローラに太陽ロー
ラ又は軌道リングを介して太陽ローラの半径方向の分力
が加わると、各遊星ローラは同方向に変位して軌道リン
グ又は太陽ローラへと押圧され、それによって各遊星ロ
ーラと太陽ローラ及び軌道リングとの各接触面に所要の
圧接力が与えられることになる。According to the above construction, each planetary roller is rotatable around the bush by sliding the inner cylindrical surface of the cylindrical hole around the cylindrical surface of the outer periphery of the bush in pairs. As described above, while supporting each planetary roller rotatably as described above, each flat surface on the inner periphery of the slot is slid in sliding contact with each flat surface on the outer periphery of the planetary shaft, and displaced in the radial direction of the sun roller. It is possible. Therefore, in the above configuration, when a component force in the radial direction of the sun roller is applied to each planetary roller via the sun roller or the orbital ring by the pressing force generating means, each planetary roller is displaced in the same direction and the orbital ring or the solar roller is displaced. , Thereby applying the required pressing force to each contact surface between each planetary roller, the sun roller, and the orbital ring.
【０００５】しかしながら、前記従来技術に係るトラク
ション伝動装置では、キャリアに各遊星軸がその両端で
支持されることから、その支承部における部品点数が多
くなると共に構造が複雑になり、ひいては装置の大型化
や組立て工数の増大を招く等の問題が生じる。そこで、
前記難点を解消するために、キャリアに各遊星軸がその
一端のみで支持される構造を採用すると、遊星軸と遊星
ローラの間に介装されたブッシュが軸線方向に沿って他
端側へと遊星軸上を移動し易くなり、遊星軸から離脱し
たり、ケース内壁等に接触して発熱、ブッシュの摩耗、
効率の低下等を生じる問題があった。However, in the traction transmission device according to the prior art, since each planet shaft is supported by both ends of the carrier, the number of parts in the support portion is increased, the structure is complicated, and the size of the device is large. This causes problems such as an increase in the number of assembly steps and the number of assembly steps. Therefore,
If the carrier adopts a structure in which each planetary shaft is supported at only one end thereof to solve the above-mentioned difficulties, the bush interposed between the planetary shaft and the planetary rollers moves toward the other end along the axial direction. It becomes easy to move on the planetary shaft, it is detached from the planetary shaft, contacts the inner wall of the case, etc., generates heat, wears the bush,
There is a problem that efficiency is lowered.
【０００６】[0006]
【発明が解決しようとする課題】本発明の課題は、各遊
星ローラがブッシュの回りに回転可能とされ且つブッシ
ュと共に遊星軸に対して太陽ローラの半径方向に変位可
能とされる遊星ローラの支承構造を備えたトラクション
伝動装置において、キャリアに各遊星軸がその一端で支
持されると共に軸線方向へのブッシュの移動が制限され
たトラクション伝動装置を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a planetary roller bearing wherein each planetary roller is rotatable about a bush and is displaceable with the bush in the radial direction of the sun roller relative to the planetary shaft. In a traction transmission device having a structure, an object is to provide a traction transmission device in which each planet shaft is supported at one end by a carrier and movement of a bush in an axial direction is restricted.
【０００７】[0007]
【課題を解決するための手段】本発明に係るトラクショ
ン伝動装置は、請求項１に記載のように、ケースに高速
軸と低速軸が同軸線上に対向して支承されると共にそれ
らの間に遊星機構が介設され、該遊星機構が、高速軸に
それと同心に連結された太陽ローラと、太陽ローラと同
軸線上にケースに対して回転不能に設けられた軌道リン
グと、太陽ローラの回りに等角度間隔で配置され、太陽
ローラに外接されると共に軌道リングに内接され、且つ
軸線方向への移動を制限された複数の遊星ローラと、各
遊星ローラをブッシュを介して回転可能に且つ太陽ロー
ラの半径方向に変位可能に支承する遊星軸と、各遊星軸
を支持すると共に低速軸にそれと同心に連結されたキャ
リアと、各遊星ローラと太陽ローラ及び軌道リングとの
各接触面に所要の圧接力を与える圧接力発生手段とから
なり、各遊星軸による遊星ローラの前記支承に際して、
遊星軸がブッシュの軸線方向の溝孔に摺嵌されると共に
ブッシュが遊星ローラの筒孔に摺嵌され、各遊星軸外周
に太陽ローラの半径方向に沿って平坦面が平行に形成さ
れ、且つ各ブッシュ外周に遊星ローラの筒孔内周の円柱
面と摺接可能な円柱面が形成されると共に各ブッシュの
溝孔内周に遊星軸の各平坦面と摺接可能な平坦面が太陽
ローラの半径方向に沿って平行に形成されてなるトラク
ション伝動装置において、前記キャリアに各遊星軸がそ
の一端で支持されると共に、各ブッシュにフランジが、
キャリアと遊星ローラとの間隙に該遊星ローラと摺動可
能に配置されるように半径方向に突設されたことを特徴
としている。According to a first aspect of the present invention, there is provided a traction transmission device wherein a high-speed shaft and a low-speed shaft are mounted on a case so as to be opposed to each other on a coaxial line, and a planet is provided between them. A mechanism is interposed, and the planetary mechanism includes a sun roller concentrically connected to the high-speed shaft, a track ring provided coaxially with the sun roller and non-rotatably with respect to the case, and around the sun roller. A plurality of planetary rollers arranged at angular intervals, circumscribed to the sun roller and inscribed in the orbital ring, and restricted in axial movement, and each of the planetary rollers is rotatable via a bush and the sun roller A planetary shaft which is displaceably supported in the radial direction of the carrier, a carrier which supports each planetary shaft and is concentrically connected to the low-speed shaft, and a required contact surface between each planetary roller, the sun roller and the orbital ring. Consists of a pressing force generating means for applying a contact force, in the bearing of the planetary rollers by each planetary shaft,
The planetary shaft is slidably fitted in the axial groove of the bush, and the bush is slidably fitted in the cylindrical hole of the planetary roller. A flat surface is formed parallel to the outer periphery of each planetary shaft along the radial direction of the sun roller, and A cylindrical surface is formed on the outer periphery of each bush so as to be able to slidably contact the cylindrical surface of the inner periphery of the cylindrical hole of the planetary roller. In a traction transmission device formed in parallel along the radial direction of the traction transmission, each of the planet shafts is supported at one end of the carrier, and a flange is formed on each bush.
It is characterized in that it is provided in the gap between the carrier and the planetary roller so as to protrude in the radial direction so as to be slidable with the planetary roller.
【０００８】前記構成では、各遊星ローラは、軸線方向
への移動を制限され、ブッシュの回りに回転可能とされ
且つブッシュと共に遊星軸に対して太陽ローラの半径方
向に変位可能とされ、しかも前記フランジがキャリアと
遊星ローラとの間隙に挟まれた状態にあるので、該フラ
ンジと一体のブッシュは軸線方向への移動を制限される
ことになる。In the above structure, each planetary roller is restricted from moving in the axial direction, is rotatable around the bush, and is displaceable together with the bush in the radial direction of the sun roller with respect to the planetary shaft. Since the flange is sandwiched by the gap between the carrier and the planetary rollers, the bush integral with the flange is restricted from moving in the axial direction.
【０００９】請求項２に記載のように、前記各ブッシュ
の溝孔は太陽ローラの半径方向に遊星軸に対する停止面
を有していてもよく、また請求項３に記載のように、各
ブッシュの溝孔が太陽ローラの半径方向に開口されると
共に、溝孔と連通する遊星ローラの筒孔内周が太陽ロー
ラの半径方向における遊星軸に対する停止面とされてい
てもよい。これらの停止面は、遊星軸に対する太陽ロー
ラの半径方向への遊星ローラの過度の変位を制限する。According to a second aspect of the present invention, the slot of each bush may have a stop surface for the planetary shaft in a radial direction of the sun roller. May be opened in the radial direction of the sun roller, and the inner periphery of the cylindrical hole of the planetary roller communicating with the slot may be a stop surface for the planetary shaft in the radial direction of the sun roller. These stop surfaces limit excessive displacement of the planetary rollers in the radial direction of the sun roller with respect to the planet axis.
【００１０】[0010]
【実施例】以下に、本発明を図面に示す実施例に基づい
て具体的に説明する。図１の（Ａ）は本発明の実施例に
係るトラクション伝動装置の縦断面図、同図の（Ｂ）は
（Ａ）に示す遊星ローラ支承部の分解組立て斜視図、図
２は図１に示す遊星機構の要部断面図、図３は図１に示
すものとは別構造の本発明に係る遊星ローラ支承部の分
解組立て斜視図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on embodiments shown in the drawings. 1A is a longitudinal sectional view of a traction transmission according to an embodiment of the present invention, FIG. 1B is an exploded perspective view of the planetary roller support shown in FIG. 1A, and FIG. 3 is an exploded perspective view of a planetary roller bearing according to the present invention having a structure different from that shown in FIG. 1.
【００１１】図１及び図２において、ケース１に高速軸
２と低速軸３が各々軸受４、５を介して同軸線上に対向
して支承されると共にそれらの間に遊星機構６が介設さ
れている。In FIGS. 1 and 2, a high-speed shaft 2 and a low-speed shaft 3 are supported on a case 1 on bearings 4 and 5 on a coaxial line via bearings 4 and 5, respectively, and a planetary mechanism 6 is interposed therebetween. ing.
【００１２】前記遊星機構６において、高速軸２にそれ
と同心に太陽ローラ７が一体化され、ケース１に軌道リ
ング８が太陽ローラ７と同軸線上に回転不能に設けら
れ、太陽ローラ７の回りには複数の遊星ローラ９が太陽
ローラ７に外接され且つ軌道リング８に内接されつつ等
角度間隔で配置され、各遊星ローラ９はブッシュ１０を
介して回転可能に且つ太陽ローラ７の半径方向に変位可
能に遊星軸１１に軸支されると共に遊星軸１１外端側へ
の移動をケース１内壁又は軌道リング８外端等に設けら
れた停止面で制限されている。各遊星軸１１はその一端
でキャリア１２に垂直固定され、キャリア１２が低速軸
３にそれと同心に連結されている。前記構成により、高
速軸２の回転が太陽ローラ７と軌道リング８との間にお
ける各遊星ローラ９の自転及び公転からなる遊星運動を
生じさせ、各遊星ローラ９の前記公転がキャリア１２を
介して低速軸３に伝達されることになる。In the planetary mechanism 6, a sun roller 7 is integrated with the high-speed shaft 2 concentrically therewith, and a track ring 8 is provided on the case 1 so as to be non-rotatably coaxial with the sun roller 7. Are arranged at equal angular intervals while a plurality of planetary rollers 9 are circumscribed by the sun roller 7 and inscribed by the orbit ring 8, and each planetary roller 9 is rotatable via a bush 10 and in the radial direction of the sun roller 7. The planetary shaft 11 is displaceably supported by the planetary shaft 11 and its movement toward the outer end of the planetary shaft 11 is restricted by a stop surface provided on the inner wall of the case 1 or the outer end of the race ring 8. One end of each planet shaft 11 is vertically fixed to a carrier 12, and the carrier 12 is connected concentrically to the low speed shaft 3. With the above configuration, the rotation of the high-speed shaft 2 causes a planetary motion consisting of the rotation and the revolution of each planetary roller 9 between the sun roller 7 and the orbit ring 8, and the revolution of each planetary roller 9 is performed via the carrier 12. This is transmitted to the low-speed shaft 3.
【００１３】前記軌道リング８は可撓性を呈すると共に
その外周に高速軸２から低速軸３に沿って漸次縮径する
テーパ面２１が形成され、ケース１内周と軌道リング８
外周との間にカラー１３が介装されると共に、該カラー
１３は、高速軸２側に圧縮ばね１４で常時付勢されつつ
軸線方向に変位可能に楔作用下に軌道リング８外周に当
接され、それによって各遊星ローラ９と太陽ローラ７及
び軌道リング８との各接触面に所要の圧接力が与えられ
る。前記カラー１３は、軌道リング８外周に、軌道リン
グ８と各遊星ローラ９との接触面Ｓにおける軸線方向中
心Ｐ又はその近傍に対応する位置において当接され、そ
れによって前記圧接力が軸線方向端部に集中しないよう
にしている。前記カラー１３内周には、軌道リング８外
周との当接部において、その外周のテーパ面２１と摺接
可能なテーパ面が形成されている。The raceway ring 8 has flexibility and a tapered surface 21 whose diameter is gradually reduced from the high speed shaft 2 to the low speed shaft 3 on its outer periphery.
A collar 13 is interposed between the outer circumference and the collar 13, which is constantly urged toward the high-speed shaft 2 by a compression spring 14 so as to be displaceable in the axial direction and abut against the outer circumference of the race ring 8 under wedge action. As a result, a required pressing force is applied to each contact surface between each planetary roller 9 and the sun roller 7 and the orbital ring 8. The collar 13 is brought into contact with the outer periphery of the orbital ring 8 at a position corresponding to or near the axial center P of the contact surface S between the orbital ring 8 and each planetary roller 9, whereby the pressing force is reduced at the axial end. I try not to concentrate on the club. A tapered surface is formed on the inner periphery of the collar 13 at a contact portion with the outer periphery of the race ring 8 so as to be slidable on the tapered surface 21 on the outer periphery.
【００１４】一方、前記の各遊星軸１１による遊星ロー
ラ９の前記支承に際しては、図１（Ｂ）に示すように、
遊星軸１１がブッシュ１０の軸線方向の溝孔１５に太陽
ローラ７の半径方向に相対変位可能に摺嵌されると共に
ブッシュ１０が遊星ローラ９の筒孔１６に摺嵌される。
各遊星軸１１外周には太陽ローラ７の半径方向に沿って
平坦面２３が両側に平行に形成されると共に、該平坦面
２３以外の外周部分には遊星ローラ９内周の円柱面３１
と対向する円柱面３２が形成され、各遊星軸１１の軸線
方向一端にはキャリア１２に嵌着固定するための嵌合部
１７が軸線方向に延設されている。On the other hand, when the planetary rollers 9 are supported by the respective planetary shafts 11, as shown in FIG.
The planetary shaft 11 is slidably fitted in the axial groove 15 of the bush 10 so as to be relatively displaceable in the radial direction of the sun roller 7, and the bush 10 is slidably fitted in the cylindrical hole 16 of the planetary roller 9.
A flat surface 23 is formed on the outer periphery of each planet shaft 11 along the radial direction of the sun roller 7 so as to be parallel to both sides, and an outer peripheral portion other than the flat surface 23 has a cylindrical surface 31 on the inner periphery of the planet roller 9.
Is formed, and a fitting portion 17 for fitting and fixing to the carrier 12 is extended at one axial end of each planet shaft 11 in the axial direction.
【００１５】各ブッシュ１０外周には遊星ローラ９の筒
孔１６内周の円柱面３１と摺接可能な円柱面３３が形成
され、溝孔１５内周には遊星軸１１の各平坦面２３と摺
接可能な平坦面２４が太陽ローラ７の半径方向に沿って
両側に平行に遊星軸１１の各平坦面２３より若干長くブ
ッシュ１０外周に達するまで形成されると共に該溝孔１
５が太陽ローラ７の半径方向にも開口され、そのように
すり割り状に穿設された前記溝孔１５により左右に分離
された各片は後端の連結部１８で連結されている。さら
に、前記ブッシュ１０の先端には、組立て時にキャリア
１２と遊星ローラ９との間隙に該遊星ローラ９と摺動可
能に配置されるようにフランジ１９が半径方向に突設さ
れている。なお、前記ブッシュ１０は、後端の連結部１
８をなくして、完全に２片に分割されていてもよい。On the outer periphery of each bush 10, there is formed a cylindrical surface 33 slidably in contact with the cylindrical surface 31 on the inner periphery of the cylindrical hole 16 of the planetary roller 9, and on the inner periphery of the slot 15 each flat surface 23 of the planet shaft 11 is formed. A slidable flat surface 24 is formed in parallel with both sides along the radial direction of the sun roller 7 to be slightly longer than each flat surface 23 of the planetary shaft 11 and reaches the outer periphery of the bush 10.
5 is also opened in the radial direction of the sun roller 7, and the pieces separated to the left and right by the slot 15 thus formed in a slit shape are connected by a connecting portion 18 at the rear end. Further, a flange 19 is provided at a tip end of the bush 10 in a radial direction so as to be slidably disposed with the planetary roller 9 in a gap between the carrier 12 and the planetary roller 9 during assembly. The bush 10 is connected to the connecting portion 1 at the rear end.
It is also possible to eliminate 8 and completely divide it into two pieces.
【００１６】前記のような遊星ローラ９支承部の構造に
より、各遊星ローラ９は、ブッシュ１０の回りに、両者
の互いに摺接される円柱面３１、３３を介して回転可能
とされ、また該ブッシュ１０は、遊星ローラ９と共に遊
星軸１１に対して、両者の互いに摺接される平坦面２
４、２３を介して太陽ローラ７の半径方向に変位可能と
され、しかも前記フランジ１９がキャリア１２と遊星ロ
ーラ９との間隙に挟まれた状態にあるので、該フランジ
１９と一体のブッシュ１０は軸線方向への移動を制限さ
れ、それと同時に遊星ローラ９もキャリア１２側への移
動を前記フランジ１９により制限されている。また、遊
星軸１１に対する太陽ローラ７の半径方向への遊星ロー
ラ９の前記変位に際して、溝孔１５と連通する遊星ロー
ラ９の筒孔１６内周の円柱面３１が太陽ローラ７の半径
方向における遊星軸１１に対する停止面とされ、それに
よって遊星軸１１に対する太陽ローラ７の半径方向への
遊星ローラ９の過度の変位が制限されている。With the structure of the support portion of the planetary roller 9 as described above, each of the planetary rollers 9 is rotatable around the bush 10 via the cylindrical surfaces 31 and 33 which are in sliding contact with each other. The bush 10 and the planetary roller 9, together with the planetary shaft 11, have a flat surface 2 slidably contacting each other.
Since the sun roller 7 can be displaced in the radial direction via the rollers 4 and 23 and the flange 19 is sandwiched between the carrier 12 and the planetary roller 9, the bush 10 integrated with the flange 19 is The movement in the axial direction is restricted, and at the same time, the movement of the planetary roller 9 toward the carrier 12 is also restricted by the flange 19. In addition, when the planetary roller 9 is displaced in the radial direction of the sun roller 7 with respect to the planetary shaft 11, the cylindrical surface 31 of the inner circumference of the cylindrical hole 16 of the planetary roller 9 communicating with the slot 15 causes the planetary planet in the radial direction of the sun roller 7. A stop surface for the shaft 11 is provided, which limits excessive displacement of the planetary roller 9 in the radial direction of the sun roller 7 with respect to the planetary shaft 11.
【００１７】図１及び図２に示す前記遊星ローラ９支承
部の代りに、例えば図３に示す遊星ローラ９支承部を採
用することができる。Instead of the planetary roller 9 support shown in FIGS. 1 and 2, for example, a planetary roller 9 support shown in FIG. 3 can be employed.
【００１８】即ち、図３において、各遊星軸１１外周に
は太陽ローラ７の半径方向に沿って平坦面２３が両側に
平行に形成されると共に、該平坦面２３以外の外周部分
には円柱面３２が形成され、各遊星軸１１の軸線方向一
端にはキャリア１２に嵌着固定するための嵌合部１７が
軸線方向に延設されている。That is, in FIG. 3, a flat surface 23 is formed on the outer periphery of each planet shaft 11 in parallel with both sides along the radial direction of the sun roller 7, and a cylindrical surface is formed on the outer peripheral portion other than the flat surface 23. A fitting portion 17 for fitting and fixing to the carrier 12 is provided at one axial end of each of the planetary shafts 11 so as to extend in the axial direction.
【００１９】各ブッシュ１０外周には遊星ローラ９の筒
孔１６内周の円柱面３１と摺接可能な円柱面３３が形成
され、溝孔１５内周には遊星軸１１の各平坦面２３と摺
接可能な平坦面２４が、太陽ローラ７の半径方向に沿っ
て両側に平行に遊星軸１１の各平坦面２３より若干長く
形成されると共に該平坦面２３以外の内周部分には遊星
軸１１外周の円柱面３２と対向する円柱面３４が形成さ
れ、前記ブッシュ１０の先端には、組立て時にキャリア
１２と遊星ローラ９との間隙に該遊星ローラ９と摺動可
能に配置されるようにフランジ１９が半径方向に突設さ
れ、それによって該フランジ１９と一体のブッシュ１０
はその軸線方向への移動を制限されている。On the outer periphery of each bush 10, there is formed a cylindrical surface 33 slidably in contact with the cylindrical surface 31 on the inner periphery of the cylindrical hole 16 of the planetary roller 9, and on the inner periphery of the slot 15, each flat surface 23 of the planet shaft 11 is formed. A slidable flat surface 24 is formed slightly longer than each flat surface 23 of the planetary shaft 11 parallel to both sides in the radial direction of the sun roller 7 and a planetary shaft is formed on an inner peripheral portion other than the flat surface 23. A cylindrical surface 34 facing the cylindrical surface 32 of the outer periphery 11 is formed, and the tip of the bush 10 is disposed in the gap between the carrier 12 and the planetary roller 9 during assembly so as to be slidable with the planetary roller 9. A flange 19 projects radially so that the bush 10 is integral with the flange 19.
Is restricted from moving in its axial direction.
【００２０】前記構成の場合、遊星軸１１に対する太陽
ローラ７の半径方向への遊星ローラ９の変位に際して
は、ブッシュ１０の溝孔１５内周の円柱面３４が太陽ロ
ーラ７の半径方向における遊星軸１１に対する停止面と
されている。In the above configuration, when the planetary roller 9 is displaced in the radial direction of the sun roller 7 with respect to the planetary shaft 11, the cylindrical surface 34 on the inner periphery of the slot 15 of the bush 10 is moved in the radial direction of the sun roller 7. 11 is a stop surface.
【００２１】[0021]
【発明の効果】請求項１に係る本発明は以上のように構
成されるので、各遊星ローラがブッシュの回りに回転可
能とされ且つブッシュと共に遊星軸に対して太陽ローラ
の半径方向に変位可能とされる遊星ローラの支承構造を
備えたトラクション伝動装置において、キャリアに各遊
星軸がその一端で支持されると共に軸線方向へのブッシ
ュの移動が制限されている。それによって、本発明で
は、遊星ローラ支承部における部品点数が低減されると
共に構造が簡素化され、装置の小型化や組立て工数の縮
小が可能になると共に特別の調整作業も不要であり、し
かも軸線方向へのブッシュの移動に起因するブッシュと
ケース内壁等との接触及びそれによる発熱、ブッシュの
摩耗、効率の低下等の問題が確実に解消される。According to the first aspect of the present invention, each planetary roller is rotatable around the bush and is displaceable together with the bush in the radial direction of the sun roller with respect to the planetary shaft. In a traction transmission device having a support structure for planetary rollers, each planet shaft is supported at one end by a carrier, and movement of the bush in the axial direction is restricted. As a result, in the present invention, the number of parts in the planetary roller bearing portion is reduced and the structure is simplified, the device can be reduced in size and the number of assembling steps can be reduced, and no special adjustment work is required. Problems such as contact between the bush and the inner wall of the case and the like due to the movement of the bush in the direction, heat generation, abrasion of the bush, reduction in efficiency, and the like due to the movement are surely solved.
【００２２】請求項２に記載のものでは、遊星ローラ支
承部における高精度の加工が可能であると共に、ブッシ
ュ溝孔が太陽ローラの半径方向に開口されていないので
変形し難く組付けが容易である。また、請求項３に記載
のものでは、ケース内の潤滑油がブッシュ溝孔における
太陽ローラの半径方向への開口部を介してブッシュと遊
星ローラとの摺動部に供給され易くなり、それによって
該摺動部の摩擦が減少すると共に長寿命且つ高効率の遊
星ローラ支承構造が得られる。According to the second aspect, the planetary roller bearing can be machined with high precision, and the bush slot is not opened in the radial direction of the sun roller. is there. According to the third aspect of the present invention, the lubricating oil in the case is easily supplied to the sliding portion between the bush and the planetary roller through the radial opening of the sun roller in the bushing slot, whereby The friction of the sliding portion is reduced, and a long life and high efficiency planetary roller support structure can be obtained.
【図１】（Ａ）は本発明の実施例に係るトラクション伝
動装置の縦断面図、（Ｂ）は（Ａ）に示す遊星ローラ支
承部の分解組立て斜視図である。1A is a longitudinal sectional view of a traction transmission according to an embodiment of the present invention, and FIG. 1B is an exploded perspective view of the planetary roller support shown in FIG.
【図２】図１に示す遊星機構の要部断面図である。FIG. 2 is a sectional view of a main part of the planetary mechanism shown in FIG.
【図３】図１に示すものとは別構造の本発明に係る遊星
ローラ支承部の分解組立て斜視図である。FIG. 3 is an exploded perspective view of a planetary roller bearing according to the present invention having a structure different from that shown in FIG. 1;
１ ケース ２ 高速軸 ３ 低速軸 ６ 遊星機構 ７ 太陽ローラ ８ 軌道リング ９ 遊星ローラ １０ ブッシュ １１ 遊星軸 １２ キャリア １５ 溝孔（ブッシュ） １６ 筒孔（遊星ローラ） １９ フランジ ２３ 平坦面（遊星軸） ２４ 平坦面（ブッシュ） ３１ 円柱面（遊星ローラ） ３３ 円柱面（ブッシュ） DESCRIPTION OF SYMBOLS 1 Case 2 High-speed shaft 3 Low-speed shaft 6 Planetary mechanism 7 Sun roller 8 Orbital ring 9 Planetary roller 10 Bush 11 Planetary shaft 12 Carrier 15 Slot (Bushing) 16 Cylindrical hole (Planetary roller) 19 Flange 23 Flat surface (Planetary shaft) 24 Flat surface (Bushing) 31 Cylindrical surface (planetary roller) 33 Cylindrical surface (Bushing)
Claims (3)
向して支承されると共にそれらの間に遊星機構が介設さ
れ、該遊星機構が、高速軸にそれと同心に連結された太
陽ローラと、太陽ローラと同軸線上にケースに対して回
転不能に設けられた軌道リングと、太陽ローラの回りに
等角度間隔で配置され、太陽ローラに外接されると共に
軌道リングに内接され、且つ軸線方向への移動を制限さ
れた複数の遊星ローラと、各遊星ローラをブッシュを介
して回転可能に且つ太陽ローラの半径方向に変位可能に
支承する遊星軸と、各遊星軸を支持すると共に低速軸に
それと同心に連結されたキャリアと、各遊星ローラと太
陽ローラ及び軌道リングとの各接触面に所要の圧接力を
与える圧接力発生手段とからなり、各遊星軸による遊星
ローラの前記支承に際して、遊星軸がブッシュの軸線方
向の溝孔に摺嵌されると共にブッシュが遊星ローラの筒
孔に摺嵌され、各遊星軸外周に太陽ローラの半径方向に
沿って平坦面が平行に形成され、且つ各ブッシュ外周に
遊星ローラの筒孔内周の円柱面と摺接可能な円柱面が形
成されると共に各ブッシュの溝孔内周に遊星軸の各平坦
面と摺接可能な平坦面が太陽ローラの半径方向に沿って
平行に形成されてなるトラクション伝動装置において、 前記キャリアに各遊星軸がその一端で支持されると共
に、各ブッシュにフランジが、キャリアと遊星ローラと
の間隙に該遊星ローラと摺動可能に配置されるように半
径方向に突設されたことを特徴とするトラクション伝動
装置。A high-speed shaft and a low-speed shaft are mounted on a case so as to face each other on a coaxial line, and a planetary mechanism is interposed between the high-speed shaft and the low-speed shaft, and the planetary mechanism is concentrically connected to the high-speed shaft. And a raceway ring provided on the coaxial line with the sun roller so as to be non-rotatable with respect to the case; arranged at equal angular intervals around the sun roller, circumscribed by the sun roller and inscribed by the race ring, and A plurality of planetary rollers whose movement in the direction is restricted, a planetary shaft that rotatably supports each planetary roller via a bush and is displaceable in the radial direction of the sun roller, and a low-speed shaft that supports each planetary shaft. A carrier concentrically connected to the carrier, and pressing force generating means for applying a required pressing force to each contact surface between each planetary roller, the sun roller, and the orbital ring. At this time, the planetary shaft is slid into the axial groove of the bush and the bush is slid into the cylindrical hole of the planetary roller, and the flat surface is parallel to the outer periphery of each planetary shaft along the radial direction of the sun roller. A cylindrical surface is formed on the outer periphery of each bush and is slidable on the inner surface of the cylindrical hole of the planetary roller. The flat surface is slidable on the inner surface of the groove of each bush on each flat surface of the planet shaft. In the traction transmission device, the surfaces of which are formed parallel to the radial direction of the sun roller, each planet shaft is supported by the carrier at one end thereof, and each bush has a flange in a gap between the carrier and the planet roller. A traction transmission device protruded in a radial direction so as to be slidable with the planetary roller.
向に遊星軸に対する停止面を有する請求項１記載のトラ
クション伝動装置。2. The traction transmission according to claim 1, wherein the slot of each bush has a stop surface for the planetary shaft in a radial direction of the sun roller.
向に開口されると共に、溝孔と連通する遊星ローラの筒
孔内周が太陽ローラの半径方向における遊星軸に対する
停止面とされた請求項１記載のトラクション伝動装置。3. The slot of each bush is opened in the radial direction of the sun roller, and the inner periphery of the cylindrical hole of the planetary roller communicating with the slot is a stop surface for the planetary shaft in the radial direction of the sun roller. Item 7. The traction transmission device according to Item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28798297A JPH11108137A (en) | 1997-10-03 | 1997-10-03 | Traction transmitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28798297A JPH11108137A (en) | 1997-10-03 | 1997-10-03 | Traction transmitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11108137A true JPH11108137A (en) | 1999-04-20 |
Family
ID=17724276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28798297A Pending JPH11108137A (en) | 1997-10-03 | 1997-10-03 | Traction transmitting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11108137A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271421A (en) * | 2019-12-26 | 2020-06-12 | 重庆大学 | Planetary traction transmission bearing type speed reducer |
-
1997
- 1997-10-03 JP JP28798297A patent/JPH11108137A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271421A (en) * | 2019-12-26 | 2020-06-12 | 重庆大学 | Planetary traction transmission bearing type speed reducer |
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