JP2006118581A - Planetary roller type power transmission device - Google Patents

Planetary roller type power transmission device Download PDF

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JP2006118581A
JP2006118581A JP2004306288A JP2004306288A JP2006118581A JP 2006118581 A JP2006118581 A JP 2006118581A JP 2004306288 A JP2004306288 A JP 2004306288A JP 2004306288 A JP2004306288 A JP 2004306288A JP 2006118581 A JP2006118581 A JP 2006118581A
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carrier
shaft
power transmission
transmission device
planetary roller
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JP4650929B2 (en
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Takeshi Noguchi
猛 野口
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Nachi Fujikoshi Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0482—Gearings with gears having orbital motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0487—Friction gearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Friction Gearing (AREA)
  • General Details Of Gearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact and inexpensive planetary roller type power transmission device having low heat generation and long service life. <P>SOLUTION: The planetary roller type power transmission device 20 comprises a plurality of planetary rollers 23 laid in pressure contact between an outer peripheral face 21a of a sun roller shaft 21 and an inner peripheral face 22a of an outer ring 22, and a carrier 24 for supporting the planetary rollers 23 arranged at equal spaces in the circumferential direction. In a central portion of the carrier 24 where the carrier 24 and a shaft member 25 are integrally joined to each other, an oil reservoir 27 is provided which has a circular cross section coaxial with the carrier 24 and larger than the inner diameter of the carrier 24 and axially extends. The oil reservoir 27 is filled with lubricant, and the front end of the solar roller shaft 21 is located in the oil reservoir 27. The outer diameter of the solar roller shaft 21 gets gradually smaller as it goes to the front end. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、遊星ローラ式動力伝達装置の潤滑構造に関する。   The present invention relates to a lubrication structure for a planetary roller power transmission device.

従来、この種の遊星ローラ式動力伝達装置は、太陽ローラ軸の外周面と固定輪の内周面との間に複数の遊星ローラを圧接状態で介在させ、遊星ローラを円周方向に等間隔に支持するキャリア軸に設けられており、該キャリア軸の駆動力を遊星ローラの公転自転により太陽ローラ軸に伝達し、または前記太陽ローラ軸の駆動力を前記遊星ローラの公転自転によってキャリア軸に伝達することにより、入力回転数に対して減速または増速する機能を有するものである。前記遊星ローラ式動力伝達装置では、遊星ローラおよび太陽ローラ軸を共にすべり接触させるので、それぞれの接触面には潤滑が必要であり、これらの接触面に例えば油溜りを設けて油を供給する構造が知られている。   Conventionally, this type of planetary roller type power transmission device has a plurality of planetary rollers interposed between the outer peripheral surface of the sun roller shaft and the inner peripheral surface of the fixed ring, and the planetary rollers are equally spaced in the circumferential direction. The driving force of the carrier shaft is transmitted to the sun roller shaft by revolving rotation of the planetary roller, or the driving force of the sun roller shaft is transmitted to the carrier shaft by revolving rotation of the planetary roller. By transmitting, it has the function of decelerating or increasing the speed with respect to the input rotational speed. In the planetary roller type power transmission device, the planetary roller and the sun roller shaft are brought into sliding contact with each other. Therefore, lubrication is required on each contact surface, and oil is supplied by providing, for example, an oil reservoir on these contact surfaces. It has been known.

このため、遊星ローラと太陽ローラ軸（入力軸）間に油を供給する例としては、入力軸１の外周面にねじ状の潤滑溝５を設け、該潤滑溝５に潤滑剤を充填し、入力軸１の回転に伴い潤滑剤が内部に押し込まれる。
また入力軸1と同軸に潤滑剤保持孔６を設けたり、該潤滑剤保持孔６から外周部に貫通する潤滑孔７を設けて、入力軸1の回転に伴う遠心力により、潤滑剤が供給される構造のものもある。（例えば、特許文献１参照）
さらに、入力軸１の外周面とキャリア３の内径面との間に含油部材５を介在させ、キャリア３が回転すると共に該含油部材５も回転し、そのときの遠心力により含油部材５から油が滲出して入力軸１と遊星ローラ２、遊星ローラ２と固定輪４のそれぞれの接触面に油が供給されている（例えば、特許文献２参照）。
特開平９−２３６１５９号公報 特開平１０−３０６９９号公報 For this reason, as an example of supplying oil between the planetary roller and the sun roller shaft (input shaft), a thread-like lubricating groove 5 is provided on the outer peripheral surface of the input shaft 1, and the lubricating groove 5 is filled with a lubricant. As the input shaft 1 rotates, the lubricant is pushed inside.
Also, a lubricant holding hole 6 is provided coaxially with the input shaft 1 or a lubricating hole 7 penetrating from the lubricant holding hole 6 to the outer peripheral portion is provided, and the lubricant is supplied by the centrifugal force accompanying the rotation of the input shaft 1. Some structures are made. (For example, see Patent Document 1)
Further, an oil retaining member 5 is interposed between the outer peripheral surface of the input shaft 1 and the inner diameter surface of the carrier 3, and the carrier 3 rotates and the oil retaining member 5 also rotates. The oil is supplied to the contact surfaces of the input shaft 1 and the planetary roller 2, and the planetary roller 2 and the fixed ring 4 (see, for example, Patent Document 2).
JP-A-9-236159 Japanese Patent Laid-Open No. 10-30699

しかし、特許文献１のものは、入力軸１に形成される潤滑溝５の加工コストが高くなるという問題があった。さらに、入力軸１と遊星ローラ２との接触長さを確保する必要があるため、これらの軸心方向長が長くなるので装置全体の取付スペースが大きくなるという問題もあった。
さらに潤滑剤保持孔６，潤滑孔７を設ける構造のものでは、入力軸１の外周面上に潤滑孔７の大きさの切り欠きができることになり、この切り欠きによって入力軸１や遊星ローラ２のころがり寿命が短くなるという問題もあった。
また、特許文献２のものでは、入力軸１とキャリア３との速度差により、入力軸１と含油部材５とはすべり接触するので、太陽ローラ軸１とキャリア３との接触部で発熱し、油の劣化が促進して該油の寿命が短くなるという問題があった。
さらにまた、装置の回転中に含油部材５が欠落し、該欠落破片を遊星ローラ２が踏み込んで、入力軸１や遊星ローラ２のころがり寿命を短くするという問題もあった。 However, the thing of patent document 1 had the problem that the processing cost of the lubrication groove | channel 5 formed in the input shaft 1 became high. Furthermore, since it is necessary to ensure the contact length between the input shaft 1 and the planetary roller 2, there is a problem that the installation space of the entire apparatus becomes large because the length in the axial direction of these shafts becomes long.
Further, in the structure in which the lubricant holding hole 6 and the lubrication hole 7 are provided, a notch having the size of the lubrication hole 7 can be formed on the outer peripheral surface of the input shaft 1, and the input shaft 1 and the planetary roller 2 can be formed by this notch. There was also a problem that the rolling life was shortened.
Moreover, in the thing of patent document 2, since the input shaft 1 and the oil-impregnated member 5 are in sliding contact due to the speed difference between the input shaft 1 and the carrier 3, heat is generated at the contact portion between the sun roller shaft 1 and the carrier 3, There was a problem that the deterioration of the oil was accelerated and the life of the oil was shortened.
Furthermore, the oil impregnated member 5 is missing during the rotation of the apparatus, and the planetary roller 2 steps on the missing piece, thereby shortening the rolling life of the input shaft 1 and the planetary roller 2.

本発明の課題は、前述した問題点に鑑みなされたもので、低発熱で寿命が長く、コンパクトで安価な遊星ローラ式動力伝達装置を提供することである。   An object of the present invention is to provide a planetary roller type power transmission device that has been made in view of the above-described problems, has low heat generation, has a long life, and is compact and inexpensive.

請求項１に記載の発明においては、太陽ローラ軸の外周面とアウタリングの内周面との間に複数の遊星ローラを圧接状態で介在させ、前記遊星ローラを円周方向に等間隔に支持するキャリアを配設し、前記キャリアと軸部材とを一体結合させたキャリア軸を備え、前記キャリア軸の駆動力を前記遊星ローラの公転自転によって前記太陽ローラ軸に伝達したり、前記太陽ローラ軸の駆動力を前記遊星ローラの公転自転によって前記キャリア軸に伝達する遊星ローラ式動力伝達装置において、
前記キャリアと前記軸部材とが一体結合される側の前記キャリアの中心部に、前記キャリアに同軸に該キャリアの内径よりも大きい断面円形状で軸心方向に延伸する油溜りが設けられていることにより前述の課題を解決した。すなわち、本発明においては、油溜りを設けることにより発熱が低く寿命を長くすることができる。 In the first aspect of the present invention, a plurality of planetary rollers are interposed between the outer peripheral surface of the sun roller shaft and the inner peripheral surface of the outer ring, and the planetary rollers are supported at equal intervals in the circumferential direction. A carrier shaft in which the carrier and the shaft member are integrally coupled, and the driving force of the carrier shaft is transmitted to the sun roller shaft by the revolution of the planetary roller, or the sun roller shaft In the planetary roller type power transmission device for transmitting the driving force of the planetary roller to the carrier shaft by the revolution of the planetary roller,
An oil sump extending in the axial direction is provided at the center of the carrier on the side where the carrier and the shaft member are integrally coupled, and is coaxial with the carrier and has a circular cross section larger than the inner diameter of the carrier. This solves the above-mentioned problems. That is, in the present invention, by providing the oil reservoir, the heat generation is low and the life can be extended.

請求項２に記載の発明においては、前記キャリア軸に同軸で一方が前記油溜りに連通し、他方が前記キャリア軸の外部に連通する連通路が設けられることにより、装置外部より潤滑剤を補給することができるので、潤滑剤の寿命をさらに延伸させることが可能である。   According to a second aspect of the present invention, a lubricant is replenished from the outside of the apparatus by providing a communication path coaxial with the carrier shaft, one communicating with the oil sump and the other communicating with the outside of the carrier shaft. Therefore, it is possible to further extend the life of the lubricant.

請求項３に記載の発明においては、前記太陽ローラ軸の前記油溜り側の先端が該油溜りの内部に位置し、かつ先端に向かって外径寸法が漸次小さくなる形状を有することにより、潤滑剤が太陽ローラ軸の回転に伴い、遠心力により遊星ローラとの接触部に送り込まれるので好適である。   According to a third aspect of the present invention, the oil roller side tip of the sun roller shaft is positioned inside the oil sump, and the outer diameter dimension gradually decreases toward the tip, thereby providing lubrication. It is preferable that the agent is sent to the contact portion with the planetary roller by centrifugal force as the sun roller shaft rotates.

請求項４に記載の発明においては、前記キャリアの内径が該キャリアの側面に向かって漸次大きくなる形状を有することにより、キャリアの内径側に付着した潤滑剤は該キャリアの回転に伴い、遠心力により油溜り反対側に導入されのでよい。   In the invention according to claim 4, since the carrier has a shape in which the inner diameter of the carrier gradually increases toward the side surface of the carrier, the lubricant adhering to the inner diameter side of the carrier is subjected to centrifugal force as the carrier rotates. May be introduced to the opposite side of the oil sump.

本発明は、装置の発熱が低く、寿命を長くすることができる。また、太陽ローラ軸に特殊な溝加工を施す必要がなく、加工コストを低減することができる。さらに、溝幅分、太陽ローラ軸と遊星ローラとの有効接触長を短くすることができるので、装置のコンパクト化を実現することが可能になった。   According to the present invention, the heat generation of the apparatus is low and the life can be extended. Further, it is not necessary to perform special groove processing on the sun roller shaft, and the processing cost can be reduced. Furthermore, since the effective contact length between the sun roller shaft and the planetary roller can be shortened by the groove width, the apparatus can be made compact.

本発明の第一の実施の形態に係る遊星ローラ式動力伝達装置を図面により詳細に説明する。図１は第一の実施の形態に係る本発明の遊星ローラ式動力伝達装置２０の概略構造を示し、（Ａ）は部分縦断面図、（Ｂ）は部分横断面図である。
図１に示すように、太陽ローラ軸２１の外周面２１ａとアウタリング２２の内周面２２ａとの間に複数個、例えば３個の遊星ローラ２３を圧接状態で介在させ、該遊星ローラ２３を円周方向に等間隔に回転自在に支持するキャリア２４と軸部材２５とを一体結合したキャリア軸２６が配置されている。この場合、キャリア軸２６の駆動力を遊星ローラ２３の自転公転によって太陽ローラ軸２１に伝達したり、太陽ローラ軸２１の駆動力を遊星ローラ２３の自転公転によってキャリア軸２６に伝達するように形成されている。
キャリア２４と軸部材２５とが一体結合される部位のキャリア２４に中心部には、該キャリア２４に同軸で該キャリア２４の内径よりも大きい断面円形状で軸心方向に延伸する油溜りが設けられていれている。油溜り２７には潤滑剤（図示しない）が封入されている。この場合、油溜り２７の外径がキャリア２４の内径よりも大きいので、該油溜り２７に封入された潤滑剤はキャリア軸２６が回転しても遠心力によって容易に油溜り２７の外部に漏出することはない。 A planetary roller power transmission device according to a first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a schematic structure of a planetary roller power transmission device 20 of the present invention according to the first embodiment, wherein (A) is a partial longitudinal sectional view and (B) is a partial transverse sectional view.
As shown in FIG. 1, a plurality of, for example, three planetary rollers 23 are interposed between the outer peripheral surface 21a of the sun roller shaft 21 and the inner peripheral surface 22a of the outer ring 22 in a pressure contact state, A carrier shaft 26 in which a carrier 24 and a shaft member 25 that are rotatably supported at equal intervals in the circumferential direction are integrally coupled is disposed. In this case, the driving force of the carrier shaft 26 is transmitted to the sun roller shaft 21 by the rotation and revolution of the planetary roller 23, and the driving force of the sun roller shaft 21 is transmitted to the carrier shaft 26 by the rotation and revolution of the planetary roller 23. Has been.
An oil sump extending in the axial direction is provided in the center of the carrier 24 where the carrier 24 and the shaft member 25 are integrally coupled, and is coaxial with the carrier 24 and has a circular cross section larger than the inner diameter of the carrier 24. It has been. A lubricant (not shown) is sealed in the oil reservoir 27. In this case, since the outer diameter of the oil reservoir 27 is larger than the inner diameter of the carrier 24, the lubricant enclosed in the oil reservoir 27 easily leaks out of the oil reservoir 27 by centrifugal force even when the carrier shaft 26 rotates. Never do.

また、太陽ローラ軸２１の油溜り２７側の先端が、該油溜り２７の内部に挿入されており、かつ太陽ローラ軸２１の外径寸法が油溜り２７側に向かって漸次小さくなる形状に形成されている。よって、油溜り２７に封入された潤滑剤は太陽ローラ軸２１との接触により該油溜り２７から滲出して少しずつ該太陽ローラ軸２１の回転に伴い、遠心力により潤滑剤が太陽ローラ軸２１と遊星ローラ２３との接触部に導入される。
さらに、キャリア２４の内径寸法が油溜り２７と反対側側面に漸次大きくなる形状を有するので、太陽ローラ軸２１の回転によって導入され、キャリア２４の内径側に付着した潤滑剤はキャリア２４の回転に伴い、遠心力により油溜り２７と反対側に導入される。
このように、油溜り２７に封入された潤滑剤は、太陽ローラ軸２１の回転と共に適宜遊星ローラ２３との接触面に供給されるので、遊星ローラ式動力伝達装置２０は適度な潤滑状態に確保される。
なお、油溜り２７の外形は円筒状を有するが、三角形、四角形等の多角形状の内方に太陽ローラ軸２１を挿入しても勿論よい。 Further, the tip of the sun roller shaft 21 on the oil reservoir 27 side is inserted into the oil reservoir 27, and the outer diameter of the sun roller shaft 21 is formed so as to gradually decrease toward the oil reservoir 27 side. Has been. Therefore, the lubricant sealed in the oil reservoir 27 oozes out of the oil reservoir 27 by contact with the sun roller shaft 21 and gradually rotates as the sun roller shaft 21 rotates, and the lubricant is removed by the centrifugal force due to the centrifugal force. And the planetary roller 23.
Further, since the inner diameter dimension of the carrier 24 gradually increases on the side surface opposite to the oil reservoir 27, the lubricant introduced by the rotation of the sun roller shaft 21 and adhering to the inner diameter side of the carrier 24 causes the rotation of the carrier 24. Accordingly, the oil is introduced to the opposite side of the oil reservoir 27 by centrifugal force.
Thus, the lubricant enclosed in the oil sump 27 is appropriately supplied to the contact surface with the planetary roller 23 as the sun roller shaft 21 rotates, so that the planetary roller power transmission device 20 is ensured in an appropriate lubricating state. Is done.
In addition, although the external shape of the oil sump 27 has a cylindrical shape, the sun roller shaft 21 may be inserted into a polygonal shape such as a triangle or a quadrangle.

かかる構成によれば、従来技術のように太陽ローラ軸と含油部材との接触による発熱はなく、含油剤の欠落飛散による装置の損傷、ころがり寿命が短くなることを防止することができる。
さらに、従来技術のように太陽ローラ軸に特殊な溝加工を施す必要がないのでコストが低く、かつ太陽ローラ軸と遊星ローラとの有効接触長さが溝幅分だけ短くすることができるので、装置全体をコンパクトにすることが可能である。 According to such a configuration, there is no heat generation due to the contact between the sun roller shaft and the oil-impregnated member as in the prior art, and it is possible to prevent damage to the device and shortening of the rolling life due to loss of the oil-containing agent.
Furthermore, since there is no need to apply special groove processing to the sun roller shaft as in the prior art, the cost is low, and the effective contact length between the sun roller shaft and the planetary roller can be shortened by the groove width. The entire apparatus can be made compact.

次に、本発明の第二の実施の形態について説明する。図２は第二の実施の形態に係る遊星ローラ式動力伝達装置３０の概略構造を示す部分縦断面図である。図２中、図１の構成要素と同一構成要素については同一符号を付して詳細な説明を省略する。
図２において、キャリア軸２６に同軸で、一方が油溜り２７に連通し、他方がキャリア軸２６の外部に連通する連通路３１が設けられている。これにより、油溜り２７には、装置外部から潤滑剤を補給することができるので、潤滑剤の寿命をさらに延伸させることができる。
また従来技術のように潤滑孔が太陽ローラ軸外周上に露出することがないので、このことによって遊星ローラのころがり寿命が短くなるという問題はなくなる。 Next, a second embodiment of the present invention will be described. FIG. 2 is a partial longitudinal sectional view showing a schematic structure of the planetary roller power transmission device 30 according to the second embodiment. In FIG. 2, the same components as those of FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
In FIG. 2, a communication path 31 is provided which is coaxial with the carrier shaft 26, one communicates with the oil reservoir 27 and the other communicates with the outside of the carrier shaft 26. Thereby, since the lubricant can be supplied to the oil reservoir 27 from the outside of the apparatus, the life of the lubricant can be further extended.
Further, since the lubricating hole is not exposed on the outer periphery of the sun roller shaft as in the prior art, this eliminates the problem that the rolling life of the planetary roller is shortened.

本発明の第三の実施の形態について説明する。図３は第三の実施の本発明の遊星ローラ式動力伝達装置４０の概略構造を示し、（Ａ）は部分縦断面図、（Ｂ）は部分横断面図である。図３中、図１の構成要素と同一構成要素については同一符号を付して詳細な説明を省0略する。
図３においては、遊星ローラ４１は中空形状としており、該遊星ローラ４１の質量が小さいので、公転による遠心力が小さくなる。よって、太陽ローラ軸２１およびアウタリング２２の応力が小さくなるので、高速回転にも耐えられ強度に対する信頼性も高まる伝動装置４０を提供することが可能である。 A third embodiment of the present invention will be described. FIG. 3 shows a schematic structure of a planetary roller power transmission device 40 according to the third embodiment of the present invention, in which (A) is a partial longitudinal sectional view and (B) is a partial transverse sectional view. In FIG. 3, the same components as those of FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
In FIG. 3, the planetary roller 41 has a hollow shape, and since the mass of the planetary roller 41 is small, the centrifugal force due to revolution is small. Therefore, since the stress of the sun roller shaft 21 and the outer ring 22 is reduced, it is possible to provide the transmission 40 that can withstand high-speed rotation and increase the reliability of strength.

本発明の第一の実施の形態に係る遊星ローラ式動力伝達装置の概略構造を示し、（Ａ）は部分縦横断面図、（Ｂ）は部分横断面図である。BRIEF DESCRIPTION OF THE DRAWINGS The schematic structure of the planetary roller type power transmission device which concerns on 1st embodiment of this invention is shown, (A) is a partial vertical cross-sectional view, (B) is a partial cross-sectional view. 本発明の第二の実施の形態に係る遊星ローラ式動力伝達装置の概略構造を示す部分縦断面図である。It is a fragmentary longitudinal cross-section which shows schematic structure of the planetary roller type power transmission device which concerns on 2nd embodiment of this invention. 本発明の第一の実施の形態に係る遊星ローラ式動力伝達装置の概略構造を示し、（Ａ）は部分縦断面図、（Ｂ）は部分横断面図である。BRIEF DESCRIPTION OF THE DRAWINGS The schematic structure of the planetary roller type power transmission device which concerns on 1st embodiment of this invention is shown, (A) is a partial longitudinal cross-sectional view, (B) is a partial cross-sectional view.

符号の説明Explanation of symbols

２０、３０、４０ 遊星ローラ式動力伝達装置
２１ 太陽ローラ軸
２１ａ 外周面
２２ アウタリング
２２ａ 内周面
２３、４１ 遊星ローラ
２４ キャリア
２５ 軸部
２６ キャリア軸
２７ 油溜り
３１ 連通路 20, 30, 40 Planetary roller type power transmission device 21 Sun roller shaft 21a Outer peripheral surface 22 Outer ring 22a Inner peripheral surface 23, 41 Planetary roller 24 Carrier 25 Shaft portion 26 Carrier shaft 27 Oil reservoir 31 Oil passage 31

Claims (4)

太陽ローラ軸の外周面とアウタリングの内周面との間に複数の遊星ローラを圧接状態で介在させ、前記遊星ローラを円周方向に等間隔に支持するキャリアを配設し、前記キャリアと軸部材とを一体結合させたキャリア軸を備え、前記キャリア軸の駆動力を前記遊星ローラの公転自転によって前記太陽ローラ軸に伝達したり、前記太陽ローラ軸の駆動力を前記遊星ローラの公転自転によって前記キャリア軸に伝達する遊星ローラ式動力伝達装置において、
前記キャリアと前記軸部材とが一体結合される側の前記キャリアの中心部に、前記キャリアに同軸に該キャリアの内径よりも大きい断面円形状で軸心方向に延伸する油溜りが設けられていることを特徴とする遊星ローラ式動力伝達装置。 A plurality of planetary rollers are interposed between the outer peripheral surface of the sun roller shaft and the inner peripheral surface of the outer ring in a pressure contact state, and a carrier for supporting the planetary rollers at equal intervals in the circumferential direction is disposed. A carrier shaft integrally coupled with a shaft member, and the driving force of the carrier shaft is transmitted to the sun roller shaft by the revolution of the planetary roller, or the driving force of the sun roller shaft is rotated and rotated by the planetary roller. In the planetary roller type power transmission device that transmits to the carrier shaft by
An oil sump extending in the axial direction is provided at the center of the carrier on the side where the carrier and the shaft member are integrally coupled, and is coaxial with the carrier and has a circular cross section larger than the inner diameter of the carrier. A planetary roller power transmission device characterized by that. 請求項１記載の遊星ローラ式動力伝達装置において、
前記キャリア軸に同軸で一方が前記油溜りに連通し、他方が前記キャリア軸の外部に連通する連通路が設けられていることを特徴とする遊星ローラ式動力伝達装置。 The planetary roller power transmission device according to claim 1,
A planetary roller power transmission device, characterized in that a communication path is provided coaxially with the carrier shaft, one communicating with the oil reservoir and the other communicating with the outside of the carrier shaft. 請求項１または２記載の遊星ローラ式動力伝達装置において、
前記太陽ローラ軸の前記油溜り側の先端が該油溜りの内部に位置し、かつ先端に向かって外径寸法が漸次小さくなる形状を有することを特徴とする遊星ローラ式動力伝達装置。 The planetary roller power transmission device according to claim 1 or 2,
A planetary roller type power transmission device characterized in that a tip of the sun roller shaft on the oil reservoir side is located inside the oil reservoir, and an outer diameter dimension gradually decreases toward the tip. 請求項１乃至３のいずれか１に記載の遊星ローラ式動力伝達装置において、
前記キャリアの内径が該キャリアの側面に向かって漸次大きくなる形状を有することを特徴とする遊星ローラ式動力伝達装置。 In the planetary roller type power transmission device according to any one of claims 1 to 3,
A planetary roller type power transmission device characterized in that an inner diameter of the carrier gradually increases toward a side surface of the carrier.
JP2004306288A 2004-10-21 2004-10-21 Planetary roller type power transmission device Expired - Fee Related JP4650929B2 (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59195240U (en) * 1983-06-14 1984-12-25 トヨタ自動車株式会社 Planetary roller type transmission
JPS6111052U (en) * 1984-06-27 1986-01-22 株式会社豊田中央研究所 Rolling friction transmission
JPS62108656U (en) * 1985-12-27 1987-07-11
JPS62114254U (en) * 1986-01-13 1987-07-21
JPH09112642A (en) * 1995-10-23 1997-05-02 Mitsubishi Heavy Ind Ltd Planet roller type power transmission device
JPH09177917A (en) * 1995-12-28 1997-07-11 Ntn Corp Planetary roller type power transmission device
JPH09236159A (en) * 1996-03-01 1997-09-09 Ntn Corp Planetary roller type power transmission
JPH1030699A (en) * 1996-07-18 1998-02-03 Ntn Corp Planetary roller type power transmission
JPH11336864A (en) * 1998-05-22 1999-12-07 Nippon Seiko Kk Friction roller type speed change gear

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59195240U (en) * 1983-06-14 1984-12-25 トヨタ自動車株式会社 Planetary roller type transmission
JPS6111052U (en) * 1984-06-27 1986-01-22 株式会社豊田中央研究所 Rolling friction transmission
JPS62108656U (en) * 1985-12-27 1987-07-11
JPS62114254U (en) * 1986-01-13 1987-07-21
JPH09112642A (en) * 1995-10-23 1997-05-02 Mitsubishi Heavy Ind Ltd Planet roller type power transmission device
JPH09177917A (en) * 1995-12-28 1997-07-11 Ntn Corp Planetary roller type power transmission device
JPH09236159A (en) * 1996-03-01 1997-09-09 Ntn Corp Planetary roller type power transmission
JPH1030699A (en) * 1996-07-18 1998-02-03 Ntn Corp Planetary roller type power transmission
JPH11336864A (en) * 1998-05-22 1999-12-07 Nippon Seiko Kk Friction roller type speed change gear

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