JP3595402B2 - Planetary roller type power transmission - Google Patents

Planetary roller type power transmission Download PDF

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Publication number
JP3595402B2
JP3595402B2 JP2624196A JP2624196A JP3595402B2 JP 3595402 B2 JP3595402 B2 JP 3595402B2 JP 2624196 A JP2624196 A JP 2624196A JP 2624196 A JP2624196 A JP 2624196A JP 3595402 B2 JP3595402 B2 JP 3595402B2
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Prior art keywords
roller
inner roller
planetary
power transmission
casing
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JPH09196136A (en
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久義 高橋
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Mitsubishi Heavy Industries Ltd
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Mitsubishi Heavy Industries Ltd
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Description

【0001】
【発明の属する技術分野】
相互に接触するローラの摩擦力により動力を伝達する遊星ローラ式動力伝達装置に関する。
【0002】
【従来の技術】
従来の遊星ローラ式動力伝達装置の例を図3及び図4によって説明する。
図3は従来例の遊星ローラ式動力伝達装置の断面図、図4は従来例の内ローラの断面図である。
図3において、入力軸1の端部には太陽ローラ2が連結され、出力軸3のキャリア4に固定された複数個の遊星ピン5のそれぞれにはニードル軸受6を介して回転自在に遊星ローラ7が前記太陽ローラ2の外周面に接触して支承され、ケーシング08には前記遊星ローラ7の外周面に接触させて内ローラ09が固定されている。
軸受10は前記入力軸1を支持し、軸受11は前記出力軸3を支持している。
【0003】
この装置において、前記内ローラ09は同内ローラの軸方向に区切って形成された厚肉円筒部09bと、該厚肉円筒部よりも薄肉に形成され内周面が相手遊星ローラとの当接面とされた薄肉円筒部09aと、該薄肉円筒部09aと該厚肉円筒部とを接続する薄肉円環部09cとからなる靱性を有する特殊鋼等の弾性部材からなる弾性ローラである。
【0004】
上記構成を具えた動力伝達装置を組み立てるには、ケーシング08内に太陽ローラ2及び遊星ローラ7を組付けた後、内ローラ09を自由状態にて挿入してケーシング08側にピン12で止めている。
この場合前述のように内ローラ09の内周面と遊星ローラ7の外周面との間にはわずかな隙間が形成されているので、内ローラ09は極めて容易に挿入できる。内ローラ09を挿入後、該内ローラ09の側面とケースカバー013との間に適当な厚さのシム014を敷き、ボルト015を締めてケースカバー013をケーシング08に固着する。
【0005】
ボルト015の締めつけによりケースカバー013によって内ローラ09は、図3に示すように軸方向の押付力T(内ローラ09の側面に均一に作用する分布荷重)を受けて自由状態における全幅WiがWtに縮小される。この全幅Wiの縮小により内径Diも縮小しようとするが、当接面09dが遊星ローラ7の外周面と当接した後は半径方向の変形が拘束され、この拘束分に相当する圧接力Pが発生し、該圧接力Pにより内ローラ09と遊星ローラ7、該遊星ローラ7と太陽ローラ2とが圧接される。
【0006】
即ち図4(a)、(b)に示すように、内ローラ09を自由状態から前記押付力Tで圧縮すると、その全幅WiがWtに、当接面09dの幅BiがBtに、それぞれ減少することにより内径DiがDmに縮小され、この圧縮量が、太陽ローラ2、遊星ローラ7によって拘束されるので、内ローラ09と遊星ローラ7との当接面に圧接力Pを発生させた遊星ローラ式動力伝達装置である。
【0007】
【発明が解決しようとする課題】
この種の動力伝達装置では使い勝手の改良とコスト低減の為に常に小型化、軽量化が求められている。上述の従来例の動力伝達装置では内ローラの外周及び側面をケーシング08及びケースカバー013で被い、ケーシング及びケースカバーの外周部で通しボルトによって内ローラを側面から押圧して固定しているので、ケーシングの外形が大きくなり、従って伝達装置全体としての高さ及び巾寸法も大きくなり、前述のニーズに沿わないという問題がある。
【0008】
本発明の目的は装置の小型化及び軽量化ができ、装置の使い勝手の向上とコスト低減ができる遊星ローラ式動力伝達装置を提供するにある。
【0009】
【課題を解決するための手段】
請求項1記載の遊星ローラ式動力伝達装置は、相互に接触する太陽ローラ52と複数個の遊星ローラ57と内ローラ59の摩擦力によって動力を伝達する遊星ローラ式動力伝達装置において、
横断面がチャンネル形で両側のフランジ部に複数のボルト孔59dを有する環状の内ローラ59と、前記内ローラに被せられた横断面がL字形で前記ボルト孔と同心の複数のボルト孔70cを有する平面部70aと該平面部の外周に続く所定長さの柱面部70bとより成る環状の与圧リング70と、
前記与圧リング70と内ローラ59を一体にして通しボルト71によって螺止されケーシング58とを有し
前記内ローラ(59)のフランジ部が自由状態で前記柱面部(70b)先端面とケーシングとの間に与圧空隙寸法δが設けられるように、前記注面部の長さを設定し、
該与圧リング(70)と内ローラ(59)を一体にして通しボルト(71)によってケーシング(58)に螺止された際に、前記両側のフランジ部巾Biが圧縮されて前記フランジ部内周側のウエッブ部内径を縮径するように構成したことを特徴としている。
【0010】
請求項2記載の遊星ローラ式動力伝達装置は請求項1記載の遊星ローラ式動力伝達装置において与圧リング70と内ローラ59の間に挿入される、環状シム(73)を有し、前記シムの厚さにより与圧空隙寸法δが調整されるように構成したことを特徴としている。
【0011】
前述の従来例と同様の相互に接触する太陽ローラ、複数個の遊星ローラ、及び内ローラの摩擦力によって動力を伝達する遊星ローラ式動力伝達装置において、断面がL字形で環状の与圧リングを内ローラに被せ、これらの与圧リング及び内ローラの側面部に設けたボルト孔を通して通しボルトによって一緒にケーシングに螺止する構造とする。
【0012】
内ローラのボルト孔はチャンネル形断面の両フランジ部のほぼ中央部で主として薄肉部にあけるが、外周側の厚肉部にかかっても支障なく、厚肉部の半径方向の寸法は極力小さく押える。内ローラの両フランジ部間の巾の圧縮量は断面がL字形で環状の与圧リング70の柱面部70bの高さ寸法によって規制し調整する。この圧縮量の調整は、与圧リングの柱面部70bの寸法を僅かに長くし、与圧リングと内ローラとの間に環状のシムを入れ、この環状シムの厚さを変えて調整してもよい。
【0013】
太陽ローラ52、遊星ローラ57、内ローラ59、及び与圧リングを仮組した後、中心部に太陽ローラ52を挿入し、内ローラ59に与圧リング70を被せた状態で両者を通しボルトでケーシングに共締めして固定する。このとき、内ローラの両フランジ部間の巾寸法は与圧リング70の柱面部の高さ寸法、または環状シム33の厚さによって決まる圧縮量だけ圧縮される。
【0014】
内ローラの内周面(ウエッブ面)は中心側に凸に湾曲して内径を縮め、内ローラ、遊星ローラ、太陽ローラは密着して互いに押圧し合う。この押圧によって生ずる摩擦力によって動力は入力軸から出力軸に伝達される。また、与圧リングは断面L字形の一方の柱面部の端はケーシングに圧着され、他方の平面部は僅かな隙間を介してキャリアの側面と対向しているので、摩擦ローラ専用のグリースを保持するグリースケースとしても役立つ。
【0015】
【発明の実施の形態】
本発明の実施の形態を実施例によって説明する。
【0016】
本発明に係る遊星ローラ式動力伝達装置の第1実施例を図1及び図2によって説明する。図1は第1実施例の遊星ローラ式動力伝達装置の断面図、図2は第1実施例の内ローラと与圧リングと環状シムの断面図である。
図1において、51は軸受60によって支承された入力軸、52は入力軸51の端部に一体に形成されジャーナル部52aを供えた太陽ローラ、53は軸受61に支承され歯車53aを有する出力軸、54は出力軸53と一体に結合したキャリア、55はキャリア54に圧入固定された複数個の遊星ピンである。
【0017】
57は遊星ピン55に軸受56を介して回転自在に支承された複数個の遊星ローラ、58は入力軸51を中心とする同一円周上に複数の雌ねじ58aを有するケーシング、58bはケーシング58の一部でケーシング本体に着脱可能に固定されたブラケット、59はボルト孔59dを有する断面がチャンネル形で環状の内ローラ、70はボルト孔70cを有する断面がL字形で環状の与圧リング、71は複数個の通しボルト、80は歯車53aと噛合してこの動力伝達装置から動力を受取る装置の歯車である。
【0018】
与圧リング70及び内ローラ59はケーシング58の雌ねじ58aに対応するボルト孔70c及び59dを通して通しボルト71によってケーシング58に共締めされており、太陽ローラ52と遊星ローラ57、及び該遊星ローラ57と内ローラ59はそれぞれ外接及び内接しており、遊星ローラ57の軸方向の移動は入力軸51の段付部と出力軸53の端部によって拘束されている。
【0019】
内ローラ59は靱性を有する特殊鋼等の弾性部材から成り、図2(a)に示すように外周側の厚肉フランジ部59b、これに続く薄肉フランジ部59c、及び内周側で遊星ローラ57と接触するウエッブ部59aより形成され、前記のボルト孔59d(図1)は薄肉フランジ部59bに設けられており、厚肉フランジ部59bに掛かっても支障ない。
【0020】
また、与圧リング70は環状の平面部70aと、該平面部70aの外周部に続く所定の高さを持った柱面部70bより成り、前記のボルト孔70cは平面部70aに設けられている。
なお、太陽ローラ52の先端ジャーナル部52aは出力軸53の内径部に挿入されて軸受62を介して支承され、曲げ変形に対して抵抗を強めている。
【0021】
上記構成の動力伝達装置の作用について説明する。
出力軸53、軸受62、遊星ローラ57、内ローラ59、与圧リング70を仮組した後、中心部を太陽ローラ52に外嵌装し、太陽ローラ52と内ローラ59との間に遊星ローラ57が外周部を接触させて篏入された状態とする。この時点では図2(a)に示す内ローラ59の内径Diは太陽ローラ52の外径と遊星ローラ57の外径の2倍の合計より大きく、かつ遊星ピン55と遊星ローラ59は遊合されているので上記の3種のローラは容易に嵌込むことができる。
【0022】
次いで、通しボルト71を与圧リング70の孔70c、内ローラ59の孔59dを通してケーシング58の雌ねじ58aに螺合させて締込む。与圧リング70の柱面部70bの先端がケーシング58に当接して止まり、内ローラ59の両厚肉フランジ部59a間の自由状態の巾Biは圧縮されてBmになり、ウエッブ部59aは中心側に凸に湾曲して内径は自由状態のDiからDmに縮む(図2(b)参照)。
【0023】
内ローラ59の内径Dmは太陽ローラ52の外径と遊星ローラ57の外径の2倍の合計より小さくなり、太陽ローラ52、遊星ローラ57、及び内ローラ59のそれぞれの接触部には押圧力が発生して摩擦転動状態となり、動力は摩擦力によって入力軸51より出力軸58に伝達される。
【0024】
各ローラ間の押圧力は与圧寸法δ(図2参照)によって決まるので、与圧リング70の柱面部70aの高さlによって調整することができる。また、図2(c)に示すように与圧リング70の高さlを僅かに長くしておき、与圧リング70と内ローラ59の間に厚さδの環状シム73を挿入して与圧寸法δを調整してもよく、環状シム73には通しボルト71用の切欠き孔を設け、位置決めはこの孔または外周部で行う。因に図示の環状シム73は外周部で位置決めを行ったものである。
【0025】
与圧リング70の柱面部70bの先端はケーシング58に当接し、平面部70aとキャリア54の間隙は小さいので、与圧リング70の内部で遊星ローラ57を収容する部屋には摩擦ローラ専用のグリースを保持することができる。
【0026】
【発明の効果】
本発明の動力伝達装置によって次の効果が得られる。
(1) 内ローラ59の外径が小さくなるので、装置の小型化及び軽量化ができ、装置の使い勝手の向上とコスト低減に寄与できる。
(2) 与圧リング70はL字形でローラ部をカバーするので、摩擦ローラ用グリースボックスとして役立つ。
【図面の簡単な説明】
【図1】本発明の第1実施例に係る遊星ローラ式動力伝達装置の断面図。
【図2】本発明の第1実施例に係る与圧リングと内ローラと第2実施例の環状シムの断面図。
【図3】従来例の遊星ローラ式動力伝達装置の断面図。
【図4】従来例の内ローラの断面図。
【符号の説明】
52…太陽ローラ、57…遊星ローラ、58…ケーシング、59…内ローラ、59d…ボルト孔(内ローラの)、70…与圧リング、70a…平面部(与圧リングの)、70b…柱面部(与圧リングの)、70c…ボルト孔(与圧リングの)、71…通しボルト、73…環状シム。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a planetary roller type power transmission device that transmits power by frictional force of rollers that come into contact with each other.
[0002]
[Prior art]
An example of a conventional planetary roller type power transmission device will be described with reference to FIGS.
FIG. 3 is a cross-sectional view of a conventional planetary roller type power transmission device, and FIG. 4 is a cross-sectional view of a conventional inner roller.
In FIG. 3, a sun roller 2 is connected to an end of an input shaft 1, and a plurality of planetary pins 5 fixed to a carrier 4 of an output shaft 3 are rotatably connected to planetary rollers 5 via needle bearings 6. The inner roller 09 is fixed to the casing 08 in contact with the outer peripheral surface of the planetary roller 7.
A bearing 10 supports the input shaft 1, and a bearing 11 supports the output shaft 3.
[0003]
In this apparatus, the inner roller 09 has a thick cylindrical portion 09b formed by partitioning in the axial direction of the inner roller, and an inner peripheral surface which is formed thinner than the thick cylindrical portion and whose inner peripheral surface is in contact with a mating planetary roller. The elastic roller is made of an elastic member such as special steel having toughness, which comprises a thin cylindrical portion 09a having a surface, and a thin annular portion 09c connecting the thin cylindrical portion 09a and the thick cylindrical portion.
[0004]
In order to assemble the power transmission device having the above-described configuration, after assembling the sun roller 2 and the planetary roller 7 in the casing 08, the inner roller 09 is inserted in a free state, and is fixed to the casing 08 by the pin 12. I have.
In this case, as described above, since a small gap is formed between the inner peripheral surface of the inner roller 09 and the outer peripheral surface of the planetary roller 7, the inner roller 09 can be inserted very easily. After the inner roller 09 is inserted, a shim 014 having an appropriate thickness is laid between the side surface of the inner roller 09 and the case cover 013, and the bolt 015 is tightened to fix the case cover 013 to the casing 08.
[0005]
As shown in FIG. 3, the inner roller 09 receives an axial pressing force T (a distributed load uniformly acting on the side surface of the inner roller 09) by the case cover 013 due to the tightening of the bolt 015, and the full width Wi in the free state becomes Wt. Is reduced to By reducing the total width Wi, the inner diameter Di is also reduced. However, after the contact surface 09d contacts the outer peripheral surface of the planetary roller 7, the deformation in the radial direction is restrained, and the pressing force P corresponding to this restraint is reduced. The inner roller 09 and the planetary roller 7, and the planetary roller 7 and the sun roller 2 are pressed against each other by the pressing force P.
[0006]
That is, as shown in FIGS. 4A and 4B, when the inner roller 09 is compressed from the free state by the pressing force T, the total width Wi decreases to Wt, and the width Bi of the contact surface 09d decreases to Bt. As a result, the inner diameter Di is reduced to Dm, and the amount of compression is restricted by the sun roller 2 and the planetary roller 7, so that the planet that generates the pressing force P on the contact surface between the inner roller 09 and the planetary roller 7 is formed. It is a roller type power transmission device.
[0007]
[Problems to be solved by the invention]
In this type of power transmission device, a reduction in size and weight is always required in order to improve usability and reduce costs. In the power transmission device of the above-described conventional example, the outer periphery and the side surface of the inner roller are covered with the casing 08 and the case cover 013, and the inner roller is pressed and fixed from the side surface by a through bolt on the outer periphery of the casing and the case cover. Therefore, there is a problem that the outer shape of the casing becomes large, and therefore the height and width of the transmission device as a whole also become large, which does not meet the above-mentioned needs.
[0008]
SUMMARY OF THE INVENTION An object of the present invention is to provide a planetary roller type power transmission device which can reduce the size and weight of the device, improve the usability of the device, and reduce the cost.
[0009]
[Means for Solving the Problems]
The planetary roller type power transmission device according to the first aspect is a planetary roller type power transmission that transmits power by frictional force of a sun roller ( 52 ) , a plurality of planetary rollers ( 57 ), and an inner roller ( 59 ) that are in contact with each other. In the device,
An annular inner roller ( 59 ) having a channel-shaped cross section and a plurality of bolt holes ( 59d ) in both flange portions; and a plurality of concentric L-shaped cross sections covered by the inner roller. An annular pressurizing ring ( 70 ) comprising a flat portion ( 70a ) having a bolt hole ( 70c ) and a columnar portion ( 70b ) of a predetermined length following the outer periphery of the flat portion;
The pressurization rings (70) of the inner roller (59) and a threaded sealed Ru casing by bolts (71) passed through by the integral (58),
The length of the pouring portion is set so that the pressurized air gap dimension δ is provided between the tip surface of the column portion (70b) and the casing when the flange portion of the inner roller (59) is in a free state;
When the pressurizing ring (70) and the inner roller (59) are integrated and screwed to the casing (58) by a through bolt (71), the flange widths Bi on both sides are compressed, and the inner circumference of the flange portion is compressed. The inner diameter of the web portion on the side is reduced .
[0010]
The planetary roller type power transmission according to claim 2 has an annular shim (73) inserted between the pressurizing ring ( 70 ) and the inner roller ( 59 ) in the planetary roller type power transmission according to claim 1. The pressurized air gap size δ is adjusted by the thickness of the shim .
[0011]
A sun roller, a plurality of planetary rollers, and a planetary roller type power transmission device for transmitting power by frictional force of an inner roller similar to the above-described conventional example are provided with an annular pressurized ring having an L-shaped cross section. A structure is adopted in which the inner cover is covered with the inner roller, and these pressurizing rings and bolt holes provided in the side surfaces of the inner roller are screwed together to the casing by through bolts.
[0012]
The bolt hole of the inner roller is drilled mainly in the thin part at the approximate center of both flange parts of the channel-shaped cross section, but it does not hinder the thick part on the outer peripheral side, and the radial dimension of the thick part can be kept as small as possible . The amount of compression of the width between the flange portions of the inner roller is regulated and adjusted by the height of the columnar surface portion 70b of the annular pressurizing ring 70 having an L-shaped cross section. The adjustment of the compression amount is performed by slightly increasing the dimension of the column surface 70b of the pressurizing ring, inserting an annular shim between the pressurizing ring and the inner roller, and adjusting the thickness of the annular shim by changing the thickness. Is also good.
[0013]
After temporarily assembling the sun roller 52, the planetary roller 57, the inner roller 59, and the pressurizing ring, the sun roller 52 is inserted into the center, and the inner roller 59 is covered with the pressurizing ring 70. Fasten together to the casing and fix. At this time, the width between the two flange portions of the inner roller is compressed by a compression amount determined by the height of the column surface of the pressurizing ring 70 or the thickness of the annular shim 33.
[0014]
The inner peripheral surface (web surface) of the inner roller is convexly curved toward the center side to reduce the inner diameter, and the inner roller, the planetary roller, and the sun roller are pressed against each other in close contact. Power is transmitted from the input shaft to the output shaft by the frictional force generated by this pressing. The pressurizing ring has an L-shaped cross-section and one end of the cylindrical surface is pressed against the casing, and the other flat surface faces the side surface of the carrier with a slight gap. Also useful as a grease case.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described with reference to examples.
[0016]
A first embodiment of a planetary roller type power transmission device according to the present invention will be described with reference to FIGS. FIG. 1 is a sectional view of a planetary roller type power transmission device of a first embodiment, and FIG. 2 is a sectional view of an inner roller, a pressurizing ring, and an annular shim of the first embodiment.
In FIG. 1, 51 is an input shaft supported by a bearing 60, 52 is a sun roller integrally formed at an end of the input shaft 51 and provided with a journal portion 52a, 53 is an output shaft supported by a bearing 61 and having a gear 53a. Reference numeral 54 denotes a carrier integrally connected to the output shaft 53, and reference numeral 55 denotes a plurality of planetary pins fixed to the carrier 54 by press fitting.
[0017]
Reference numeral 57 denotes a plurality of planetary rollers rotatably supported by a planet pin 55 via a bearing 56; 58, a casing having a plurality of female threads 58a on the same circumference around the input shaft 51; A bracket partly removably fixed to the casing body, 59 is a channel-shaped annular inner roller having a bolt hole 59d, 70 is an L-shaped annular pressurizing ring having a bolt hole 70c, 71 Is a plurality of through bolts, and 80 is a gear of a device that meshes with the gear 53a to receive power from the power transmission device.
[0018]
The pressurizing ring 70 and the inner roller 59 are jointly fastened to the casing 58 by through bolts 71 through bolt holes 70c and 59d corresponding to the female screw 58a of the casing 58, and the sun roller 52, the planetary roller 57, and the planetary roller 57 The inner rollers 59 are circumscribed and inscribed, respectively. The axial movement of the planetary rollers 57 is restricted by the stepped portion of the input shaft 51 and the end of the output shaft 53.
[0019]
The inner roller 59 is made of an elastic member such as a special steel having toughness, and as shown in FIG. 2A, a thick flange portion 59b on the outer peripheral side, a thin flange portion 59c following this, and a planetary roller 57 on the inner peripheral side. The bolt hole 59d (FIG. 1) is formed in the thin flange portion 59b, and does not hinder the thick flange portion 59b.
[0020]
The pressurizing ring 70 includes an annular flat portion 70a and a columnar portion 70b having a predetermined height following the outer peripheral portion of the flat portion 70a, and the bolt hole 70c is provided in the flat portion 70a. .
Note that the tip journal portion 52a of the sun roller 52 is inserted into the inner diameter portion of the output shaft 53 and supported via the bearing 62, thereby increasing resistance to bending deformation.
[0021]
The operation of the power transmission device having the above configuration will be described.
After temporarily assembling the output shaft 53, the bearing 62, the planetary roller 57, the inner roller 59, and the pressurizing ring 70, the center portion is externally fitted to the sun roller 52, and the planetary roller is interposed between the sun roller 52 and the inner roller 59. 57 is in a state where the outer periphery is brought into contact with and fitted. At this time, the inner diameter Di of the inner roller 59 shown in FIG. 2A is larger than the sum of the outer diameter of the sun roller 52 and twice the outer diameter of the planetary roller 57, and the planetary pin 55 and the planetary roller 59 are loosened. Therefore, the above three types of rollers can be easily fitted.
[0022]
Next, the through bolt 71 is screwed into the female screw 58a of the casing 58 through the hole 70c of the pressurizing ring 70 and the hole 59d of the inner roller 59, and tightened. The distal end of the columnar surface portion 70b of the pressurizing ring 70 comes into contact with the casing 58 and stops, the free width Bi between the thick flange portions 59a of the inner roller 59 is compressed to Bm, and the web portion 59a is located on the center side. And the inner diameter shrinks from Di in a free state to Dm (see FIG. 2B).
[0023]
The inner diameter Dm of the inner roller 59 is smaller than the sum of the outer diameter of the sun roller 52 and twice the outer diameter of the planetary roller 57, and the contact portions of the sun roller 52, the planetary roller 57, and the inner roller 59 are pressed. Is generated and a friction rolling state occurs, and power is transmitted from the input shaft 51 to the output shaft 58 by frictional force.
[0024]
Since the pressing force between the rollers is determined by the pressurized dimension δ (see FIG. 2), it can be adjusted by the height l of the columnar portion 70a of the pressurized ring 70. Further, by inserting the annular shim 73 having a thickness of [delta] 1 between the 2 height l of the pressurized-ring 70 as shown in (c) Leave slightly longer, a pressurized ring 70 inner roller 59 The pressurizing dimension δ may be adjusted, and a notch hole for the through bolt 71 is provided in the annular shim 73, and positioning is performed in this hole or the outer peripheral portion. Incidentally, the annular shim 73 shown is positioned at the outer peripheral portion.
[0025]
Since the tip of the columnar surface 70b of the pressurizing ring 70 abuts on the casing 58 and the gap between the flat portion 70a and the carrier 54 is small, the interior of the pressurizing ring 70 for accommodating the planetary roller 57 has a grease dedicated to a friction roller. Can be held.
[0026]
【The invention's effect】
The following effects can be obtained by the power transmission device of the present invention.
(1) Since the outer diameter of the inner roller 59 is reduced, the size and weight of the device can be reduced, which contributes to improved usability and cost reduction of the device.
(2) Since the pressurizing ring 70 covers the roller portion in an L shape, it serves as a grease box for a friction roller.
[Brief description of the drawings]
FIG. 1 is a sectional view of a planetary roller type power transmission device according to a first embodiment of the present invention.
FIG. 2 is a sectional view of a pressurizing ring and an inner roller according to a first embodiment of the present invention and an annular shim according to a second embodiment.
FIG. 3 is a cross-sectional view of a conventional planetary roller type power transmission device.
FIG. 4 is a cross-sectional view of a conventional inner roller.
[Explanation of symbols]
52: sun roller, 57: planetary roller, 58: casing, 59: inner roller, 59d: bolt hole (of inner roller), 70: pressurized ring, 70a: flat portion (of pressurized ring), 70b: column surface portion (For pressurized ring), 70c ... bolt hole (for pressurized ring), 71 ... through bolt, 73 ... annular shim.

Claims (2)

相互に接触する太陽ローラ(52)と複数個の遊星ローラ(57)と内ローラ(59)の摩擦力によって動力を伝達する遊星ローラ式動力伝達装置において、
横断面がチャンネル形で両側のフランジ部に複数のボルト孔(59d)を有する環状の内ローラ(59)と、前記内ローラに被せられた横断面がL字形で前記ボルト孔と同心の複数のボルト孔(70c)を有する平面部(70a)と該平面部の外周に続く所定長さの柱面部(70b)とより成る環状の与圧リング(70)と、
前記与圧リング(70)と内ローラ(59)を一体にして通しボルト(71)によって螺止されケーシング(58)とを有し
前記内ローラ(59)のフランジ部が自由状態で前記柱面部(70b)先端面とケーシングとの間に与圧空隙寸法δが設けられるように、前記注面部の長さを設定し、
該与圧リング(70)と内ローラ(59)を一体にして通しボルト(71)によってケーシング(58)に螺止された際に、前記両側のフランジ部巾Biが圧縮されて前記フランジ部内周側のウエッブ部内径を縮径するように構成したことを特徴とする遊星ローラ式動力伝達装置。
In a planetary roller type power transmission device that transmits power by frictional force of a sun roller (52), a plurality of planetary rollers (57), and an inner roller (59) that come into contact with each other,
An annular inner roller (59) having a channel-shaped cross section and having a plurality of bolt holes (59d) in flange portions on both sides; and a plurality of L-shaped cross sections covered by the inner roller and concentric with the bolt holes. An annular pressurizing ring (70) comprising a flat portion (70a) having a bolt hole (70c) and a columnar portion (70b) having a predetermined length following the outer periphery of the flat portion;
The pressurization rings (70) of the inner roller (59) and a threaded sealed Ru casing by bolts (71) passed through by the integral (58),
The length of the pouring portion is set so that the pressurized air gap dimension δ is provided between the tip surface of the column portion (70b) and the casing when the flange portion of the inner roller (59) is in a free state;
When the pressurizing ring (70) and the inner roller (59) are integrated and screwed to the casing (58) by a through bolt (71), the flange widths Bi on both sides are compressed, and the inner circumference of the flange portion is compressed. A planetary roller type power transmission device characterized in that the inner diameter of the web portion on the side is reduced .
与圧リング(70)と内ローラ59の間に挿入される、環状シム(73)を有し、前記シムの厚さにより与圧空隙寸法δが調整されるように構成したことを特徴とする請求項1に記載の遊星ローラ式動力伝達装置。 It has an annular shim (73) inserted between the pressurizing ring (70) and the inner roller ( 59 ) , and the pressurized air gap size δ is adjusted by the thickness of the shim. The planetary roller type power transmission device according to claim 1, wherein
JP2624196A 1996-01-22 1996-01-22 Planetary roller type power transmission Expired - Fee Related JP3595402B2 (en)

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JP2624196A JP3595402B2 (en) 1996-01-22 1996-01-22 Planetary roller type power transmission

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Application Number Priority Date Filing Date Title
JP2624196A JP3595402B2 (en) 1996-01-22 1996-01-22 Planetary roller type power transmission

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JPH09196136A JPH09196136A (en) 1997-07-29
JP3595402B2 true JP3595402B2 (en) 2004-12-02

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Publication number Priority date Publication date Assignee Title
EP1036954B1 (en) * 1999-03-16 2006-08-02 Sumitomo Heavy Industries, Ltd. Oscillating internally meshing planetary gear unit and planetary roller mechanism

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