JP2002357255A - Toroidal type variable-speed drive - Google Patents
Toroidal type variable-speed driveInfo
- Publication number
- JP2002357255A JP2002357255A JP2001167360A JP2001167360A JP2002357255A JP 2002357255 A JP2002357255 A JP 2002357255A JP 2001167360 A JP2001167360 A JP 2001167360A JP 2001167360 A JP2001167360 A JP 2001167360A JP 2002357255 A JP2002357255 A JP 2002357255A
- Authority
- JP
- Japan
- Prior art keywords
- diameter side
- side member
- power roller
- trunnion
- toroidal
- 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
Classifications
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/44—Selection of substances
- F16C33/445—Coatings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、複数の転動体を転
動自在に保持する保持器を改良したトロイダル型無段変
速機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toroidal type continuously variable transmission having an improved cage for rotatably holding a plurality of rolling elements.
【０００２】[0002]
【従来の技術】近年、自動車用の変速機として、あるい
は各種産業機械用の変速機としてトロイダル型無段変速
機が使用されている。図７に示すものは、トロイダル型
無段変速機の要部を示すものであり、回転軸１の周囲に
それぞれの内周面同士を互いに対向させた入力ディスク
(第１のディスク)２と出力ディスク(第２のディスク)３
がそれぞれ回転自在に支持されている。入力ディスク２
と出力ディスク３間には両ディスク２，３の中心軸に対
し捻れの位置にある枢軸（図示しない）を中心として揺
動するトラニオン４が設けられている。このトラニオン
４には変位軸５が設けられ、この変位軸５の周囲には入
力ディスク２と出力ディスク３の間に挟持された状態で
回転自在に支持されたパワーローラ６が設けられてい
る。さらに、パワーローラ６とトラニオン４との間に
は、このパワーローラ６に加わるスラスト方向の荷重を
支承するスラスト転がり軸受７が設けられている。2. Description of the Related Art In recent years, toroidal-type continuously variable transmissions have been used as transmissions for automobiles or transmissions for various industrial machines. FIG. 7 shows a main part of a toroidal-type continuously variable transmission, in which an input disk in which respective inner peripheral surfaces are opposed to each other around a rotation shaft 1.
(First disk) 2 and output disk (second disk) 3
Are rotatably supported. Input disk 2
A trunnion 4 swinging about a pivot (not shown) that is twisted with respect to the central axis of the two disks 2 and 3 is provided between the output disk 3 and the output disk 3. The trunnion 4 is provided with a displacement shaft 5. Around the displacement shaft 5, a power roller 6 rotatably supported while being sandwiched between the input disk 2 and the output disk 3 is provided. Further, between the power roller 6 and the trunnion 4, there is provided a thrust rolling bearing 7 for supporting a load in the thrust direction applied to the power roller 6.
【０００３】前記入力ディスク２と出力ディスク３の内
周面２ａ，３ａはそれぞれ断面が円弧形の凹面であり、
前記パワーローラ６の周面６ａは球面状の凸面であり、
この周面６ａと前記内周面２ａ，３ａとが互いに当接し
ている。前記スラスト転がり軸受７は、パワーローラ６
の周面６ａを外周に形成している内輪７ａと、外輪７ｂ
と、内輪７ａ及び外輪７ｂの転動面に保持されている複
数の転動体８と、この複数の転動体８を転動自在に保持
する保持器９を備えている。The inner peripheral surfaces 2a, 3a of the input disk 2 and the output disk 3 are concave surfaces each having an arc-shaped cross section.
The peripheral surface 6a of the power roller 6 is a spherical convex surface,
The peripheral surface 6a and the inner peripheral surfaces 2a, 3a are in contact with each other. The thrust rolling bearing 7 includes a power roller 6
Inner ring 7a having a peripheral surface 6a formed on the outer periphery, and outer ring 7b
And a plurality of rolling elements 8 held on the rolling surfaces of the inner ring 7a and the outer ring 7b, and a retainer 9 for holding the plurality of rolling elements 8 in a freely rotatable manner.
【０００４】保持器９は、図８及び図９にも示すよう
に、内周端から外周端までの肉厚が均一な円環状の主体
１０と、主体１０の周方向に所定間隔を開けて設けられ
て複数の転動体８を転動自在に保持する複数のポケット
１１とから構成されている。さらに、これらポケット１
１を横切る状態で、主体１０の内周縁と外周縁との間の
両側面に、凹溝からなる潤滑油流路１２が設けられてい
る。As shown in FIGS. 8 and 9, the retainer 9 has an annular main body 10 having a uniform thickness from the inner peripheral end to the outer peripheral end, and a predetermined interval in the circumferential direction of the main body 10. And a plurality of pockets 11 which are provided and hold the plurality of rolling elements 8 so as to freely roll. In addition, these pockets 1
1, a lubricating oil flow path 12 composed of a concave groove is provided on both side surfaces between the inner peripheral edge and the outer peripheral edge of the main body 10.
【０００５】[0005]
【発明が解決しようとする課題】しかし、上記構成のト
ロイダル型無段変速機は、スラスト転がり軸受７の保持
器９が軸方向に支持されていないので、保持器９の潤滑
油流路１２を形成している両側面が、内輪７ａ、外輪７
ｂにこすれて摩耗しやすい。However, in the toroidal-type continuously variable transmission having the above-described structure, since the cage 9 of the thrust rolling bearing 7 is not supported in the axial direction, the lubricating oil flow path 12 of the cage 9 is not provided. Both sides formed are the inner ring 7a and the outer ring 7
It is easy to wear by rubbing on b.
【０００６】また、動力伝達の際には、スラスト転がり
軸受７の内輪７ａがスラスト方向の力を受けると同時
に、円周上の１８０°の対向位置でラジアル方向の分力
も発生するので、スラスト転がり軸受７がラジアル方向
に圧縮される。この圧縮により内輪７ａが楕円形に変形
するので、転動体８を介して保持器９の円周方向に異な
る応力で過大な外力が加わり、保持器９の強度の面で問
題がある。しかも、保持器９の両側面に潤滑油流路１２
を形成したことで、部分的に強度が低下した構造となっ
ている。Further, at the time of power transmission, the inner ring 7a of the thrust rolling bearing 7 receives a force in the thrust direction, and at the same time, a radial component force is generated at a position facing 180 ° on the circumference, so that the thrust rolling is performed. The bearing 7 is compressed in the radial direction. Due to this compression, the inner ring 7a is deformed into an elliptical shape, so that an excessive external force is applied with different stresses in the circumferential direction of the cage 9 via the rolling elements 8, and there is a problem in strength of the cage 9. Moreover, the lubricating oil flow paths 12
Is formed, the structure has a partially reduced strength.
【０００７】本発明は、上記事情に鑑みて為されたもの
で、保持器の強度及び耐摩耗性を向上させたトロイダル
型無段変速機を提供することを目的とする。The present invention has been made in view of the above circumstances, and has as its object to provide a toroidal-type continuously variable transmission in which the strength and wear resistance of a cage are improved.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、請求項１記載のトロイダル型無段変速機は、回転軸
と、この回転軸の周囲にそれぞれ回転自在に支持され、
それぞれの内周面同士を互いに対向させた第1及び第２
のディスクと、当該第１及び第２のディスクの中心軸に
対し捻れの位置にある枢軸を中心として揺動するトラニ
オンと、このトラニオンに設けられた変位軸と、この変
位軸の周囲に回転自在に支持された状態で、前記第１の
ディスク及び第２のディスクの間に挟持されたパワーロ
ーラと、このパワーローラと前記トラニオンとの間に設
けられ、このパワーローラに加わるスラスト方向の荷重
を支承するスラスト転がり軸受とを備え、前記第１及び
第２のディスクの内周面はそれぞれ断面が円弧形の凹面
であり、前記パワーローラの周面は球面状の凸面であ
り、この周面と前記内周面とが互いに当接しており、前
記スラスト転がり軸受は、パワーローラの球面状の凸面
を外周に形成した内輪と、外輪と、これら内輪及び外輪
の転動面に保持されている複数の転動体と、この複数の
転動体を転動自在に保持する保持器を備え、当該保持器
は、円環状の主体と、この主体の周方向に所定間隔を開
けて設けられて前記複数の転動体を保持する複数のポケ
ットとからなるトロイダル型無段変速機において、前記
保持器の主体を、動力伝達の際に加わる外力に対して変
形しにくい強度を有する部材で形成し、この部材の前記
内輪及び前記外輪に対向する少なくとも一方の側面に、
前記内輪及び前記外輪に対して低摩擦係数で摺動する低
摩擦摺動部を設けた。According to a first aspect of the present invention, there is provided a toroidal-type continuously variable transmission which is rotatably supported on a rotating shaft and around the rotating shaft.
First and second inner peripheral surfaces facing each other
Disk, a trunnion that swings about a pivot that is twisted with respect to the central axis of the first and second disks, a displacement axis provided on the trunnion, and a rotatable around the displacement axis. A power roller sandwiched between the first disk and the second disk, and a load provided between the power roller and the trunnion in the thrust direction applied to the power roller. A thrust rolling bearing to be supported, wherein the inner peripheral surfaces of the first and second disks are each a concave surface having an arc-shaped cross section, and the peripheral surface of the power roller is a spherical convex surface; And the inner peripheral surface are in contact with each other, and the thrust rolling bearing is held by an inner ring having a spherical convex surface of a power roller formed on the outer periphery, an outer ring, and rolling surfaces of these inner and outer rings. A plurality of rolling elements, and a retainer for rotatably holding the plurality of rolling elements, the retainer is provided at a predetermined interval in a circumferential direction of the annular main body and the main body, and In a toroidal-type continuously variable transmission including a plurality of pockets holding a plurality of rolling elements, a main body of the retainer is formed of a member having a strength that is not easily deformed by an external force applied during power transmission. On at least one side of the member facing the inner ring and the outer ring,
A low-friction sliding portion that slides on the inner ring and the outer ring with a low friction coefficient is provided.
【０００９】この請求項１記載の発明によると、スラス
ト転がり軸受の保持器が軸方向に移動しても、この保持
器を構成する主体の少なくとも一方の側面に設けた低摩
擦摺動部が、スラスト転がり軸受の内輪及び前記外輪に
低摩擦係数で摺動するので、保持器の摩耗が防止され
る。また、動力伝達の際に保持器に過大な外力が加わっ
ても、主体が強度を有する部材で構成されているので、
保持器の破壊が防止される。According to the first aspect of the present invention, even if the retainer of the thrust rolling bearing moves in the axial direction, the low-friction sliding portion provided on at least one side surface of the main body constituting the retainer has Since the inner race and the outer race of the thrust rolling bearing slide with a low coefficient of friction, wear of the cage is prevented. Also, even if an excessive external force is applied to the retainer during power transmission, the main body is made of a member having strength,
Cage destruction is prevented.
【００１０】また、請求項２記載のトロイダル型無段変
速機は、請求項１の低摩擦摺動部を皮膜部とした。この
請求項２記載の発明によると、スラスト転がり軸受の保
持器が軸方向に移動しても、この保持器を構成する主体
の少なくとも一方の側面に設けた皮膜部が、スラスト転
がり軸受の内輪及び外輪に低摩擦係数で摺動するので、
保持器の摩耗が防止される。また、動力伝達の際に保持
器に過大な外力が加わっても、主体が強度を有する部材
で構成されているので、保持器の破壊が防止される。[0010] In the toroidal-type continuously variable transmission according to the second aspect, the low friction sliding portion according to the first aspect is used as a film portion. According to the second aspect of the present invention, even when the retainer of the thrust rolling bearing moves in the axial direction, the coating provided on at least one side surface of the main body constituting the retainer includes the inner ring and the inner ring of the thrust rolling bearing. Since it slides on the outer ring with a low coefficient of friction,
Wear of the cage is prevented. Further, even if an excessive external force is applied to the retainer at the time of power transmission, the retainer is prevented from being broken because the main body is formed of a strong member.
【００１１】また、請求項３記載のトロイダル型無段変
速機は、請求項１の低摩擦摺動部を合成樹脂により形成
された合成樹脂部とした。この請求項３記載の発明によ
ると、スラスト転がり軸受の保持器が軸方向に移動して
も、この保持器を構成する主体の少なくとも一方の側面
に設けた合成樹脂部が、スラスト転がり軸受の内輪及び
外輪に低摩擦係数で摺動するので、保持器の摩耗が防止
される。また、動力伝達の際に保持器に過大な外力が加
わっても、主体が強度を有する部材で構成されているの
で、保持器の破壊が防止される。Further, in the toroidal type continuously variable transmission according to the third aspect, the low friction sliding portion according to the first aspect is a synthetic resin portion formed of a synthetic resin. According to the third aspect of the present invention, even if the retainer of the thrust rolling bearing moves in the axial direction, the synthetic resin portion provided on at least one side surface of the main body constituting the retainer is formed by the inner ring of the thrust rolling bearing. Also, since the outer ring slides with a low coefficient of friction, wear of the retainer is prevented. Further, even if an excessive external force is applied to the retainer at the time of power transmission, the retainer is prevented from being broken because the main body is formed of a strong member.
【００１２】また、請求項４記載のトロイダル型無段変
速機は、前記主体を、肉厚の異なる内径側部材及び外径
側部材を一体化することで構成し、前記外径側部材を、
動力伝達の際に加わる外力に対して変形しにくい強度を
有する部材とし、前記内径側部材を、前記内輪及び前記
外輪に対して低摩擦係数で摺動する部材とした。According to a fourth aspect of the present invention, there is provided a toroidal-type continuously variable transmission, wherein the main body is formed by integrating an inner diameter side member and an outer diameter side member having different thicknesses.
The inner diameter side member is a member having a low friction coefficient with respect to the inner ring and the outer ring, the member having a strength that is not easily deformed by an external force applied at the time of power transmission.
【００１３】また、請求項５記載のトロイダル型無段変
速機は、請求項４の内径側部材の肉厚を、外径側部材の
肉厚よりも厚くしている。In the toroidal-type continuously variable transmission according to a fifth aspect, the thickness of the inner diameter side member of the fourth aspect is larger than the thickness of the outer diameter side member.
【００１４】この請求項４及び５記載の発明によると、
スラスト転がり軸受の保持器が軸方向に移動しても、内
径側部材がスラスト転がり軸受の内輪及び前記外輪に対
して低摩擦係数で摺動するので、保持器の摩耗が防止さ
れる。また、動力伝達の際に保持器に過大な外力が加わ
っても、外径側部材が保持器全体の強度を保つので、保
持器の破壊が防止される。According to the fourth and fifth aspects of the present invention,
Even if the retainer of the thrust rolling bearing moves in the axial direction, the inner diameter side member slides on the inner ring and the outer ring of the thrust rolling bearing with a low coefficient of friction, thereby preventing wear of the retainer. Further, even if an excessive external force is applied to the cage during power transmission, the outer diameter side member maintains the strength of the entire cage, so that the cage is prevented from being broken.
【００１５】さらに、請求項６記載のトロイダル型無段
変速機は、前記主体を、肉厚の異なる内径側部材及び外
径側部材を一体化することで構成し、前記外径側部材
を、前記内輪及び前記外輪に対して低摩擦係数で摺動す
る部材とし、前記内径側部材を、動力伝達の際に加わる
外力に対して変形しにくい強度を有する部材とした。Further, in the toroidal-type continuously variable transmission according to a sixth aspect, the main body is constituted by integrating an inner diameter side member and an outer diameter side member having different thicknesses, and the outer diameter side member is A member that slides with a low friction coefficient with respect to the inner ring and the outer ring, and the inner-diameter-side member is a member that is hardly deformed by an external force applied during power transmission.
【００１６】また、請求項７記載のトロイダル型無段変
速機は、請求項６の内径側部材の肉厚を、外径側部材の
肉厚よりも薄くしている。In the toroidal-type continuously variable transmission according to a seventh aspect, the thickness of the inner diameter side member of the sixth aspect is smaller than the thickness of the outer diameter side member.
【００１７】この請求項６及び７記載の発明によると、
スラスト転がり軸受の保持器が軸方向に移動しても、外
径側部材がスラスト転がり軸受の内輪及び前記外輪に対
して低摩擦係数で摺動するので、保持器の摩耗が防止さ
れる。また、動力伝達の際に保持器に過大な外力が加わ
っても、内径側部材が保持器全体の強度を保つので、保
持器の破壊が防止される。According to the sixth and seventh aspects of the present invention,
Even if the cage of the thrust rolling bearing moves in the axial direction, the outer diameter side member slides with a low coefficient of friction with respect to the inner ring and the outer ring of the thrust rolling bearing, thereby preventing wear of the cage. Further, even if an excessive external force is applied to the cage during power transmission, the inner diameter side member maintains the strength of the entire cage, so that the cage is prevented from being broken.
【００１８】また、請求項８記載のトロイダル型無段変
速機は、前記主体を、肉厚の均一な内径側部材及び外径
側部材を一体化することで構成し、これら内径側部材及
び外径側部材の少なくとも一方の部材を、前記内輪及び
前記外輪に対して変形しにくい強度を有し、他方の部材
を、前記内輪及び前記外輪に対して低摩擦係数で摺動す
る部材とした。In the toroidal-type continuously variable transmission according to the present invention, the main body is formed by integrating an inner diameter side member and an outer diameter side member having a uniform thickness. At least one of the radial members has a strength that is not easily deformed with respect to the inner ring and the outer ring, and the other member is a member that slides with a low friction coefficient with respect to the inner ring and the outer ring.
【００１９】この請求項８記載の発明によると、スラス
ト転がり軸受の保持器が軸方向に移動しても、他方の部
材がスラスト転がり軸受の内輪及び前記外輪に対して低
摩擦係数で摺動するので、保持器の摩耗が防止される。
また、動力伝達の際に保持器に過大な外力が加わって
も、一方の部材が保持器の強度を保つので、保持器の破
壊が防止される。According to the eighth aspect of the invention, even if the retainer of the thrust rolling bearing moves in the axial direction, the other member slides with a low coefficient of friction with respect to the inner ring and the outer ring of the thrust rolling bearing. Therefore, wear of the cage is prevented.
Further, even if an excessive external force is applied to the retainer during power transmission, one of the members maintains the strength of the retainer, thereby preventing the retainer from being broken.
【００２０】[0020]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照して説明する。なお、図７に示した構成と同一構
成部分には、同一符号を付してその説明を省略する。図
１は、第１実施形態の保持器２０を横断面で示した図で
ある。本実施形態の保持器２０は、内周端から外周端ま
での肉厚が均一な円環状の主体２２と、主体２２の周方
向に設けた複数のポケット２４とを備えている。各ポケ
ット２４は、転動体８を転動自在に保持している。Embodiments of the present invention will be described below with reference to the drawings. The same components as those shown in FIG. 7 are denoted by the same reference numerals, and description thereof will be omitted. FIG. 1 is a diagram showing the retainer 20 of the first embodiment in a cross section. The retainer 20 of the present embodiment includes an annular main body 22 having a uniform thickness from the inner peripheral end to the outer peripheral end, and a plurality of pockets 24 provided in the circumferential direction of the main body 22. Each pocket 24 holds the rolling element 8 so as to freely roll.
【００２１】主体２２は、動力伝達の際に加わる外力に
対して変形しにくい強度を有する金属部材で形成されて
いる。この主体２２のスラスト転がり軸受７の内輪７ａ
及び外輪７ｂに対向する両側面には、低摩擦摺動部であ
る皮膜部２６が設けられている。この皮膜部２６の例と
しては、リン酸皮膜処理により設けたもの、或いはセラ
ミックコーティングのように、内輪７ａ及び外輪７ｂに
対して低摩擦係数で摺動するものが考えられる。The main body 22 is formed of a metal member having a strength that is not easily deformed by an external force applied during power transmission. The inner ring 7a of the thrust rolling bearing 7 of the main body 22
On both sides facing the outer ring 7b, a film portion 26 as a low friction sliding portion is provided. Examples of the coating portion 26 include a coating provided by a phosphoric acid coating process, and a coating such as a ceramic coating that slides on the inner ring 7a and the outer ring 7b with a low coefficient of friction.
【００２２】上記構成の保持器２０を、トロイダル型無
段変速機に組み込むと、保持器２０自体が軸方向に移動
しても、主体２２の両側面に設けた皮膜部２６が、内輪
７ａ及び外輪７ｂに低摩擦係数で摺動するので保持器２
０全体の摩耗を防止することができる。また、動力伝達
の際に、スラスト転がり軸受７の内輪７ａがスラスト方
向の力を受けると同時に、円周上の１８０°の対向位置
でラジアル方向の分力も発生して内輪７ａが楕円形に変
形してしまい、転動体８を介して保持器９の円周方向に
過大な外力が加わっても、金属部材からなる主体２２が
強度を有する部材で構成されているので、保持器２０の
破壊を防止することができる。When the cage 20 having the above structure is incorporated in a toroidal-type continuously variable transmission, even if the cage 20 itself moves in the axial direction, the film portions 26 provided on both side surfaces of the main body 22 are covered with the inner ring 7a and the inner ring 7a. The cage 2 slides on the outer ring 7b with a low friction coefficient.
0 can be prevented from being worn. Also, at the time of power transmission, the inner ring 7a of the thrust rolling bearing 7 receives a force in the thrust direction, and at the same time, a radial component force is generated at a 180 ° facing position on the circumference to deform the inner ring 7a into an elliptical shape. Even if an excessive external force is applied in the circumferential direction of the cage 9 via the rolling elements 8, the main body 22 made of a metal member is constituted by a member having strength. Can be prevented.
【００２３】なお、皮膜部２６は、内輪及び外輪に対向
するどちらか一方でもよい。保持器の摩耗部分は、玉数
及び伝達トルクの大きさにより、内輪側面が摺動した
り、外輪側面が摺動したりするので使用条件により、皮
膜部２６を形成する面を決める。The coating 26 may be provided on either the inner ring or the outer ring. Since the inner ring side surface slides or the outer ring side surface slides depending on the number of balls and the magnitude of the transmission torque, the wear portion of the cage determines the surface on which the film portion 26 is formed depending on the use conditions.
【００２４】次に、図２は、第２実施形態の保持器３０
を横断面で示した図である。本実施形態の保持器３０
は、内周端から外周端までの肉厚が均一な円環状の主体
３２を備え、この主体３２のスラスト軸受７の内輪７ａ
及び、外輪７ｂに対抗する両側面には、低摩擦摺動部で
ある合成樹脂部３６が設けられている。Next, FIG. 2 shows a cage 30 according to a second embodiment.
FIG. Cage 30 of the present embodiment
Is provided with an annular main body 32 having a uniform thickness from the inner peripheral end to the outer peripheral end, and the inner race 7a of the thrust bearing 7 of the main body 32.
Further, a synthetic resin portion 36 as a low friction sliding portion is provided on both side surfaces opposing the outer ring 7b.
【００２５】主体３２は、動力伝達の際に加わる外力に
対して変形しにくい強度を有する金属部材で形成されて
いる。合成樹脂部３６は、内輪７ａ及び外輪７ｂに対し
て低摩擦係数で摺動する合成樹脂材料より成り、接着及
び射出成形することなどにより主体３２の側面に設けら
れる。The main body 32 is formed of a metal member having a strength that is not easily deformed by an external force applied during power transmission. The synthetic resin portion 36 is made of a synthetic resin material that slides with a low friction coefficient with respect to the inner ring 7a and the outer ring 7b, and is provided on the side surface of the main body 32 by bonding and injection molding.
【００２６】上記構成の保持器３０をトロイダル型無段
変速機に組み込むと、保持器３０が軸方向に移動して
も、主体３２の両側面に設けた合成樹脂部３６が内輪７
ａ及び外輪７ｂに低摩擦係数で摺動するので保持器３０
全体の摩耗を防止することができる。また、動力伝達の
際に、保持器３０に過大な外力が加わっても、金属部材
からなる主体３２が保持器３０全体の強度を保つので、
保持器３０の破壊を防止することができる。When the retainer 30 having the above structure is incorporated in a toroidal-type continuously variable transmission, the synthetic resin portions 36 provided on both side surfaces of the main body 32 retain the inner ring 7 even when the retainer 30 moves in the axial direction.
a and the outer ring 7b slide with a low coefficient of friction.
Overall wear can be prevented. In addition, even if an excessive external force is applied to the retainer 30 during power transmission, the main body 32 made of a metal member maintains the strength of the entire retainer 30.
The destruction of the retainer 30 can be prevented.
【００２７】なお、低摩擦摺動部である合成樹脂部３６
は、第１実施形態と同様に、内輪及び外輪に対向するど
ちらか一方でもよい。The synthetic resin portion 36 which is a low friction sliding portion
May be either one facing the inner ring and the outer ring, as in the first embodiment.
【００２８】次に、図３は、第３実施形態の保持器４０
を横断面で示した図である。本実施形態の保持器４０
は、肉厚が異なる内径側部材４２及び外径側部材４４で
構成されている。内径側部材４２は肉厚がｔ１の円環状
の部材であり、外径側部材４４は、転動体８を転動自在
に保持するポケット４６を周方向に形成した円環状の部
材であり、内径側部材４２の肉厚ｔ１より小さな肉厚ｔ
２として形成されている（ｔ１＞ｔ２）。Next, FIG. 3 shows a cage 40 according to a third embodiment.
FIG. Cage 40 of the present embodiment
Is composed of an inner diameter side member 42 and an outer diameter side member 44 having different thicknesses. The inner diameter side member 42 is an annular member having a thickness of t1, and the outer diameter side member 44 is an annular member in which a pocket 46 for rotatably holding the rolling element 8 is formed in the circumferential direction. Thickness t smaller than thickness t1 of side member 42
2 (t1> t2).
【００２９】外径側部材４４は、動力伝達の際に加わる
外力に対して変形しにくい強度を有する材料、たとえ
ば、鋼、繊維強化プラスチック、カーボンファイバープ
ラスチック等である。内径側部材４２は、内輪７ａ及び
外輪７ｂに対して低摩擦係数で摺動する材料、たとえ
ば、黄銅(ＨＢＳＣ１)、合成樹脂等からなる部材であ
り、外径側部材４４の内側に、プレス圧入、焼ばめ、接
着、射出成形等により形成されている。The outer diameter side member 44 is made of a material which is hardly deformed by an external force applied during power transmission, for example, steel, fiber reinforced plastic, carbon fiber plastic, or the like. Inner diameter side member 42, a material which slides with low friction coefficient with respect to the inner ring 7a and the outer ring 7b, for example, brass (HB S C1), a member made of synthetic resin or the like, inside the outer diameter side member 44, It is formed by press-fitting, shrink fitting, bonding, injection molding and the like.
【００３０】上記構成の保持器４０をトロイダル型無段
変速機に組み込むと、保持器４０が軸方向に移動して
も、肉厚ｔ２の厚い内径側部材が内輪７ａ及び外輪７ｂ
に低摩擦係数で摺動するので保持器４０全体の摩耗を防
止することができる。また、動力伝達の際に、保持器４
０に過大な外力が加わっても、外径側部材４４が保持器
４０全体の強度を保つので、保持器４０の破壊を防止す
ることができる。When the retainer 40 having the above structure is incorporated in a toroidal-type continuously variable transmission, even if the retainer 40 moves in the axial direction, the inner diameter side member having the large thickness t2 is used for the inner ring 7a and the outer ring 7b.
Therefore, wear of the entire retainer 40 can be prevented. Also, when power is transmitted, the cage 4
Even if an excessive external force is applied to 0, the outer diameter side member 44 maintains the strength of the entire retainer 40, so that the retainer 40 can be prevented from being broken.
【００３１】次に、図４は、第４実施形態の保持器５０
を横断面で示した図である。本実施形態の保持器５０
は、肉厚（ｔ３）が薄い内径側部材５２と肉厚（ｔ４）
が厚い外径側部材５４で構成されている（ｔ３＜ｔ
４）。内径側部材５２は、転動体８を転動自在に保持す
るポケット５６を周方向に形成した円環状の部材であ
り、外径側部材５４は、内径側部材５２の外周に一体化
されている。FIG. 4 shows a cage 50 according to a fourth embodiment.
FIG. Cage 50 of the present embodiment
Is the inner diameter side member 52 having a small thickness (t3) and the thickness (t4).
(T3 <t)
4). The inner diameter side member 52 is an annular member formed in the circumferential direction with a pocket 56 that rotatably holds the rolling element 8, and the outer diameter side member 54 is integrated with the outer periphery of the inner diameter side member 52. .
【００３２】外径側部材５４は、内輪７ａ及び外輪７ｂ
に対して低摩擦係数で摺動する材料、たとえば、黄銅
(ＨＢＳＣ１)、合成樹脂であり、内径側部材５２は、動
力伝達の際に加わる外力に対して変形しにくい強度を有
する材料、たとえば、鋼、繊維強化プラスチック、カー
ボンファイバープラスチック等である。内径側部材５２
は、外径側部材５４の内側に、プレス圧入、焼ばめ、接
着、射出成形等により形成される。The outer diameter side member 54 includes an inner ring 7a and an outer ring 7b.
Material that slides with a low coefficient of friction against, for example, brass
(HB S C1), which is a synthetic resin, and the inner diameter side member 52 is a material having a strength that is not easily deformed by an external force applied during power transmission, for example, steel, fiber reinforced plastic, carbon fiber plastic, or the like. Inside diameter member 52
Is formed inside the outer diameter side member 54 by press-fitting, shrink fitting, bonding, injection molding, or the like.
【００３３】上記構成の保持器５０をトロイダル型無段
変速機に組み込むと、保持器５０が軸方向に移動して
も、肉厚ｔ４の厚い外径側部材５４が内輪７ａ及び外輪
７ｂに低摩擦係数で摺動するので保持器全体の摩耗を防
止することができる。また、動力伝達の際に、保持器５
０に過大な外力が加わっても、外径側部材５４が保持器
全体の強度を保つので、保持器５０の破壊を防止するこ
とができる。When the retainer 50 having the above structure is incorporated in a toroidal-type continuously variable transmission, even if the retainer 50 moves in the axial direction, the outer diameter side member 54 having the large thickness t4 is kept low on the inner ring 7a and the outer ring 7b. Since the sliding is performed with the friction coefficient, the wear of the entire retainer can be prevented. When transmitting power, the retainer 5
Even if an excessive external force is applied to zero, the outer diameter side member 54 maintains the strength of the entire cage, so that the cage 50 can be prevented from being broken.
【００３４】なお、保持器の摩耗部分は、玉数及び伝達
トルクの大きさにより、内径側部材が摺動したり、外径
側部材が摺動したりするので、使用条件により、それに
適した実施形態を選択する。The wear portion of the retainer slides on the inner diameter side member or slides on the outer diameter side member depending on the number of balls and the magnitude of the transmission torque. Select an embodiment.
【００３５】次に、図５は、第５実施形態の保持器６０
を横断面で示した図である。本実施形態の保持器６０
は、肉厚の均一な内径側部材６２及び外径側部材６４で
構成されている。内径側部材６２は、転動体８を転動自
在に保持するポケット６６を周方向に形成した円環状の
部材であり、外径側部材６４は、内径側部材６２の外周
方向に形成した円環状の部材であり、外径側部材６４
は、内径側部材６２の外周に、締まりばめなどで嵌合さ
れた円環状の部材である。Next, FIG. 5 shows a cage 60 according to a fifth embodiment.
FIG. Cage 60 of the present embodiment
Is composed of an inner diameter side member 62 and an outer diameter side member 64 having uniform thickness. The inner diameter side member 62 is an annular member formed in the circumferential direction with a pocket 66 for rotatably holding the rolling element 8. Outer diameter side member 64
Is an annular member fitted to the outer periphery of the inner diameter side member 62 by an interference fit or the like.
【００３６】前記外径側部材６４は、動力伝達の際に加
わる外力に対して変形しにくい強度を有し、且つ、内輪
７ａに対して低摩擦係数で摺動する部材であり、例えば
焼結金属等の金属からなる部材である。内径側部材６２
は、軽量な合成樹脂材料からなる部材である。The outer diameter side member 64 is a member that has a strength that is not easily deformed by an external force applied during power transmission, and that slides on the inner ring 7a with a low coefficient of friction. It is a member made of metal such as metal. Inner diameter side member 62
Is a member made of a lightweight synthetic resin material.
【００３７】上記構成の保持器６０をトロイダル型無段
変速機に組み込むと、保持器６０が軸方向に移動して
も、外径側部材６４が内輪７ａ及び外輪７ｂに低摩擦係
数で摺動するので保持器６０の摩耗を防止することがで
きる。また、動力伝達の際に、保持器６０に過大な外力
が加わっても、外径側部材６４が保持器６０の強度を保
つので、保持器６０の破壊を防止することができる。さ
らに、内径側部材６２を、軽量な合成樹脂材料で構成し
たので、保持器６０全体の軽量化をはかることができ
る。When the cage 60 having the above structure is incorporated in a toroidal-type continuously variable transmission, even when the cage 60 moves in the axial direction, the outer diameter side member 64 slides on the inner ring 7a and the outer ring 7b with a low friction coefficient. Therefore, wear of the retainer 60 can be prevented. Further, even when an excessive external force is applied to the retainer 60 during power transmission, the outer diameter side member 64 maintains the strength of the retainer 60, so that the retainer 60 can be prevented from being broken. Furthermore, since the inner diameter side member 62 is made of a lightweight synthetic resin material, the weight of the entire retainer 60 can be reduced.
【００３８】次に、図６は、第６実施形態の保持器７０
を横断面で示した図である。本実施形態の保持器７０
は、肉厚の均一な内径側部材７２および外径側部材７４
で構成されている。内径側部材７２は円環状の部材であ
り、外径側部材７４は、転動体を転動自在に保持するポ
ケット７６を周方向に形成した円環状の部材であり、内
径側部材７２の外周に、締まりばめなどで嵌合されてい
る。外径側部材７４は、動力伝達の際に加わる外力に対
して変形しにくい強度を有する金属材料である。内径側
部材７２は、内輪７ａ及び外輪７ｂに対して低摩擦係数
で摺動する合成樹脂材料からなる部材である。FIG. 6 shows a cage 70 according to a sixth embodiment.
FIG. Cage 70 of the present embodiment
Are the inner diameter side member 72 and the outer diameter side member 74 having a uniform thickness.
It is composed of The inner diameter side member 72 is an annular member, and the outer diameter side member 74 is an annular member formed in the circumferential direction with a pocket 76 for rotatably holding the rolling element. And are fitted with an interference fit or the like. The outer diameter side member 74 is a metal material having a strength that is not easily deformed by an external force applied during power transmission. The inner diameter side member 72 is a member made of a synthetic resin material that slides with a low friction coefficient with respect to the inner ring 7a and the outer ring 7b.
【００３９】上記構成の保持器７０をトロイダル型無段
変速機に組み込むと、保持器７０が軸方向に移動して
も、内径側部材７２が内輪７ａ及び外輪７ｂに低摩擦係
数で摺動するので保持器７０の摩耗を防止することがで
きる。また、動力伝達の際に、保持器７０に過大な外力
が加わっても、外径側部材７４が保持器７０の強度を保
つので保持器７０の破壊を防止することができる。When the retainer 70 having the above structure is incorporated in a toroidal-type continuously variable transmission, even when the retainer 70 moves in the axial direction, the inner diameter side member 72 slides on the inner ring 7a and the outer ring 7b with a low friction coefficient. Therefore, wear of the retainer 70 can be prevented. Further, even when an excessive external force is applied to the retainer 70 during power transmission, the outer diameter side member 74 maintains the strength of the retainer 70, so that the fracture of the retainer 70 can be prevented.
【００４０】[0040]
【発明の効果】以上説明したように、本発明のトロイダ
ル型無段変速機によると、スラスト転がり軸受の内輪及
び外輪に低摩擦係数で摺動することで摩耗が防止され、
動力伝達の際に過大な外力が加わっても十分に強度を有
する保持器を備えたので、最適に転動体を案内でき、耐
久性を向上することができる。As described above, according to the toroidal type continuously variable transmission of the present invention, abrasion is prevented by sliding the inner and outer rings of the thrust rolling bearing with a low coefficient of friction.
Since the retainer has a sufficient strength even when an excessive external force is applied during power transmission, the rolling elements can be optimally guided, and the durability can be improved.
【図１】本発明に係る第１実施形態の保持器を示す横断
面図である。FIG. 1 is a cross-sectional view showing a cage according to a first embodiment of the present invention.
【図２】本発明に係る第２実施形態の保持器を示す横断
面図である。FIG. 2 is a cross-sectional view showing a cage according to a second embodiment of the present invention.
【図３】本発明に係る第３実施形態の保持器を示す横断
面図である。FIG. 3 is a cross-sectional view showing a cage according to a third embodiment of the present invention.
【図４】本発明に係る第４実施形態の保持器を示す横断
面図である。FIG. 4 is a cross-sectional view showing a cage according to a fourth embodiment of the present invention.
【図５】本発明に係る第５実施形態の保持器を示す横断
面図である。FIG. 5 is a cross-sectional view showing a cage according to a fifth embodiment of the present invention.
【図６】本発明に係る第６実施形態の保持器を示す横断
面図である。FIG. 6 is a cross-sectional view showing a cage according to a sixth embodiment of the present invention.
【図７】トロイダル型無段変速機の要部を示す図であ
る。FIG. 7 is a diagram showing a main part of a toroidal-type continuously variable transmission.
【図８】従来の保持器を示す平面図である。FIG. 8 is a plan view showing a conventional cage.
【図９】図８のａ−ａ線矢視図である。FIG. 9 is a view taken along line aa of FIG. 8;
１ 回転軸 ２ 入力ディスク（第１のディスク） ３ 出力ディスク（第２のディスク） ４ トラニオン ６ パワーローラ ７ スラスト転がり軸受 ８ 転動体 ２０，３０，４０，５０，６０，７０ 保持器 ２２，３２ 主体 ２４，４６，５６，６６，７６ ポケット ２６ 皮膜部 ３２，４２，５２，６２，７２ 内径側部材 ３４，４４，５４，６４，７４ 外径側部材 ３６ 合成樹脂部 DESCRIPTION OF SYMBOLS 1 Rotation axis 2 Input disk (1st disk) 3 Output disk (2nd disk) 4 Trunnion 6 Power roller 7 Thrust rolling bearing 8 Rolling element 20, 30, 40, 50, 60, 70 Cage 22, 32 Main body 24, 46, 56, 66, 76 Pocket 26 Film part 32, 42, 52, 62, 72 Inner diameter side member 34, 44, 54, 64, 74 Outer diameter side member 36 Synthetic resin part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 町田 尚 神奈川県藤沢市鵠沼神明一丁目５番50号 日本精工株式会社内 (72)発明者 後藤 伸夫 神奈川県藤沢市鵠沼神明一丁目５番50号 日本精工株式会社内 Ｆターム(参考） 3J051 AA03 BA03 BB02 BE09 CA05 CB07 EC03 FA02 FA07 FA10 3J101 AA03 AA32 AA42 AA53 AA62 BA35 BA44 EA02 EA13 EA31 EA41 EA78 FA15 FA31 GA01 GA60 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Takashi Machida 1-5-50 Kumeinuma Shinmei, Fujisawa City, Kanagawa Prefecture Inside NSK Ltd. (72) Inventor Nobuo Goto 1-50-50 Kugenuma Shinmei, Fujisawa City, Kanagawa Prefecture F-term in NSK Ltd. (reference) 3J051 AA03 BA03 BB02 BE09 CA05 CB07 EC03 FA02 FA07 FA10 3J101 AA03 AA32 AA42 AA53 AA62 BA35 BA44 EA02 EA13 EA31 EA41 EA78 FA15 FA31 GA01 GA60
Claims (8)
回転自在に支持され、それぞれの内周面同士を互いに対
向させた第1及び第２のディスクと、当該第１及び第２
のディスクの中心軸に対し捻れの位置にある枢軸を中心
として揺動するトラニオンと、このトラニオンに設けら
れた変位軸と、この変位軸の周囲に回転自在に支持され
た状態で、前記第１のディスク及び第２のディスクの間
に挟持されたパワーローラと、このパワーローラと前記
トラニオンとの間に設けられ、このパワーローラに加わ
るスラスト方向の荷重を支承するスラスト転がり軸受と
を備え、前記第１及び第２のディスクの内周面はそれぞ
れ断面が円弧形の凹面であり、前記パワーローラの周面
は球面状の凸面であり、この周面と前記内周面とが互い
に当接しており、前記スラスト転がり軸受は、パワーロ
ーラの球面状の凸面を外周に形成した内輪と、外輪と、
これら内輪及び外輪の転動面に保持されている複数の転
動体と、この複数の転動体を転動自在に保持する保持器
を備え、当該保持器は、円環状の主体と、この主体の周
方向に所定間隔を開けて設けられて前記複数の転動体を
保持する複数のポケットとからなるトロイダル型無段変
速機において、前記保持器の主体を、動力伝達の際に加
わる外力に対して変形しにくい強度を有する部材で形成
し、この部材の前記内輪及び前記外輪に対向する少なく
とも一方の側面に、前記内輪及び前記外輪に対して低摩
擦係数で摺動する低摩擦摺動部を設けたことを特徴とす
るトロイダル型無段変速機。1. A rotating shaft, first and second disks rotatably supported around the rotating shaft and having respective inner peripheral surfaces facing each other, and the first and second disks.
A trunnion that swings about a pivot that is twisted with respect to the center axis of the disc, a displacement axis provided on the trunnion, and the first trunnion supported rotatably around the displacement axis. A power roller sandwiched between the disk and the second disk; and a thrust rolling bearing provided between the power roller and the trunnion and supporting a load in a thrust direction applied to the power roller, The inner peripheral surfaces of the first and second discs are concave surfaces each having an arc-shaped cross section, and the peripheral surface of the power roller is a spherical convex surface. The peripheral surface and the inner peripheral surface come into contact with each other. The thrust rolling bearing, the inner ring having a spherical convex surface of the power roller formed on the outer periphery, and an outer ring,
A plurality of rolling elements held on the rolling surfaces of the inner ring and the outer ring, and a retainer for rotatably holding the plurality of rolling elements are provided. In a toroidal-type continuously variable transmission including a plurality of pockets provided at predetermined intervals in a circumferential direction and holding the plurality of rolling elements, the main body of the retainer is controlled by an external force applied during power transmission. It is formed of a member having a strength that is not easily deformed, and a low friction sliding portion is provided on at least one side of the member facing the inner ring and the outer ring with a low friction coefficient with respect to the inner ring and the outer ring. A toroidal-type continuously variable transmission.
特徴とする請求項１記載のトロイダル型無段変速機。2. The toroidal-type continuously variable transmission according to claim 1, wherein the low friction sliding portion is a film portion.
された合成樹脂部であることを特徴とする請求項１記載
のトロイダル型無段変速機。3. The toroidal-type continuously variable transmission according to claim 1, wherein the low-friction sliding portion is a synthetic resin portion formed of a synthetic resin.
回転自在に支持され、それぞれの内周面同士を互いに対
向させた第1及び第２のディスクと、当該第１及び第２
のディスクの中心軸に対し捻れの位置にある枢軸を中心
として揺動するトラニオンと、このトラニオンに設けら
れた変位軸と、この変位軸の周囲に回転自在に支持され
た状態で、前記第１のディスク及び第２のディスクの間
に挟持されたパワーローラと、このパワーローラと前記
トラニオンとの間に設けられ、このパワーローラに加わ
るスラスト方向の荷重を支承するスラスト転がり軸受と
を備え、前記第１及び第２のディスクの内周面はそれぞ
れ断面が円弧形の凹面であり、前記パワーローラの周面
は球面状の凸面であり、この周面と前記内周面とが互い
に当接しており、前記スラスト転がり軸受は、パワーロ
ーラの球面状の凸面を外周に形成した内輪と、外輪と、
これら内輪及び外輪の転動面に保持されている複数の転
動体と、この複数の転動体を転動自在に保持する保持器
を備え、当該保持器は、円環状の主体と、この主体の周
方向に所定間隔を開けて設けられて前記複数の転動体を
保持する複数のポケットとからなるトロイダル型無段変
速機において、前記主体を、肉厚の異なる内径側部材及
び外径側部材を一体化することで構成し、前記外径側部
材を、動力伝達の際に加わる外力に対して変形しにくい
強度を有する部材とし、前記内径側部材を、前記内輪及
び前記外輪に対して低摩擦係数で摺動する部材としたこ
とを特徴とするトロイダル型無段変速機。4. A rotating shaft, first and second disks rotatably supported around the rotating shaft and having respective inner peripheral surfaces opposed to each other, and the first and second disks.
A trunnion that swings about a pivot that is twisted with respect to the center axis of the disc, a displacement axis provided on the trunnion, and the first trunnion supported rotatably around the displacement axis. A power roller sandwiched between the disk and the second disk; and a thrust rolling bearing provided between the power roller and the trunnion and supporting a load in a thrust direction applied to the power roller, The inner peripheral surfaces of the first and second discs are concave surfaces each having an arc-shaped cross section, and the peripheral surface of the power roller is a spherical convex surface. The peripheral surface and the inner peripheral surface come into contact with each other. The thrust rolling bearing, the inner ring having a spherical convex surface of the power roller formed on the outer periphery, and an outer ring,
A plurality of rolling elements held on the rolling surfaces of the inner ring and the outer ring, and a retainer for rotatably holding the plurality of rolling elements are provided. In a toroidal-type continuously variable transmission including a plurality of pockets provided at predetermined intervals in a circumferential direction and holding the plurality of rolling elements, the main body includes an inner diameter side member and an outer diameter side member having different thicknesses. The outer diameter side member is a member having a strength that is not easily deformed by an external force applied during power transmission, and the inner diameter side member has low friction with the inner ring and the outer ring. A toroidal-type continuously variable transmission characterized in that it is a member that slides with a coefficient.
の肉厚よりも厚くしていることを特徴とする請求項４記
載のトロイダル型無段変速機。5. The toroidal-type continuously variable transmission according to claim 4, wherein a thickness of the inner diameter side member is larger than a thickness of the outer diameter side member.
回転自在に支持され、それぞれの内周面同士を互いに対
向させた第1及び第２のディスクと、当該第１及び第２
のディスクの中心軸に対し捻れの位置にある枢軸を中心
として揺動するトラニオンと、このトラニオンに設けら
れた変位軸と、この変位軸の周囲に回転自在に支持され
た状態で、前記第１のディスク及び第２のディスクの間
に挟持されたパワーローラと、このパワーローラと前記
トラニオンとの間に設けられ、このパワーローラに加わ
るスラスト方向の荷重を支承するスラスト転がり軸受と
を備え、前記第１及び第２のディスクの内周面はそれぞ
れ断面が円弧形の凹面であり、前記パワーローラの周面
は球面状の凸面であり、この周面と前記内周面とが互い
に当接しており、前記スラスト転がり軸受は、パワーロ
ーラの球面状の凸面を外周に形成した内輪と、外輪と、
これら内輪及び外輪の転動面に保持されている複数の転
動体と、この複数の転動体を転動自在に保持する保持器
を備え、当該保持器は、円環状の主体と、この主体の周
方向に所定間隔を開けて設けられて前記複数の転動体を
保持する複数のポケットとからなるトロイダル型無段変
速機において、前記主体を、肉厚の異なる内径側部材及
び外径側部材を一体化することで構成し、前記外径側部
材を、前記内輪及び前記外輪に対して低摩擦係数で摺動
する部材とし、前記内径側部材を、動力伝達の際に加わ
る外力に対して変形しにくい強度を有する部材としたこ
とを特徴とするトロイダル型無段変速機。6. A rotating shaft, first and second disks rotatably supported around the rotating shaft, and having respective inner peripheral surfaces facing each other, and the first and second disks.
A trunnion that swings about a pivot that is twisted with respect to the center axis of the disc, a displacement axis provided on the trunnion, and the first trunnion supported rotatably around the displacement axis. A power roller sandwiched between the disk and the second disk; and a thrust rolling bearing provided between the power roller and the trunnion and supporting a load in a thrust direction applied to the power roller, The inner peripheral surfaces of the first and second discs are concave surfaces each having an arc-shaped cross section, and the peripheral surface of the power roller is a spherical convex surface. The peripheral surface and the inner peripheral surface come into contact with each other. The thrust rolling bearing, the inner ring having a spherical convex surface of the power roller formed on the outer periphery, and an outer ring,
A plurality of rolling elements held on the rolling surfaces of the inner ring and the outer ring, and a retainer for rotatably holding the plurality of rolling elements are provided. In a toroidal-type continuously variable transmission including a plurality of pockets provided at predetermined intervals in a circumferential direction and holding the plurality of rolling elements, the main body includes an inner diameter side member and an outer diameter side member having different thicknesses. The outer diameter side member is a member that slides with a low coefficient of friction with respect to the inner ring and the outer ring, and the inner diameter side member is deformed by an external force applied during power transmission. A toroidal-type continuously variable transmission characterized in that the member has a strength that is difficult to perform.
の肉厚よりも薄くしていることを特徴とする請求項６記
載のトロイダル型無段変速機。7. The toroidal-type continuously variable transmission according to claim 6, wherein a thickness of the inner diameter side member is smaller than a thickness of the outer diameter side member.
回転自在に支持され、それぞれの内周面同士を互いに対
向させた第１及び第２のディスクと、当該第１及び第２
のディスクの中心軸に対し捻れの位置にある枢軸を中心
として揺動するトラニオンと、このトラニオンに設けら
れた変位軸と、この変位軸の周囲に回転自在に支持され
た状態で、前記第１のディスク及び第２のディスクの間
に挟持されたパワーローラと、このパワーローラと前期
トラニオンとの間に設けられ、このパワーローラに加わ
るスラスト方向の荷重を支承するスラスト転がり軸受と
を備え、前記第１及び第２のディスクの内周面はそれぞ
れ断面が円弧形の凹面であり、前記パワーローラの周面
は球面上の凸面であり、この周面と前記内周面とが互い
に当接しており、前記スラスト転がり軸受は、パワーロ
ーラの球面上の凸面を外周に形成した内輪と、外輪と、
これら内輪及び外輪の転動面に保持されている複数の転
動体と、この複数の転動体を転動自在に保持する保持器
を備え、当該保持器は、円環状の主体と、この主体の周
方向に所定間隔を開けて設けられて前記複数の転動体を
保持する複数のポケットからなるトロイダル型無段変速
機において、前記主体を、肉厚の均一な内径側部材及び
外径側部材を一体化することで構成し、これら内径側部
材及び外径側部材の少なくとも一方の部材を、前記内輪
及び前記外輪に対して変形しにくい強度を有し、他方の
部材を、前記内輪及び前記外輪に対して低摩擦係数で摺
動する部材としたことを特徴とするトロイダル型無段変
速機。8. A rotating shaft, first and second disks rotatably supported around the rotating shaft and having respective inner peripheral surfaces facing each other, and the first and second disks.
A trunnion that swings about a pivot that is twisted with respect to the center axis of the disc, a displacement axis provided on the trunnion, and the first trunnion supported rotatably around the displacement axis. A power roller sandwiched between the disk and the second disk; and a thrust rolling bearing provided between the power roller and the trunnion and supporting a load in a thrust direction applied to the power roller. The inner peripheral surface of the first and second disks is a concave surface having an arc-shaped cross section, and the peripheral surface of the power roller is a convex surface on a spherical surface, and this peripheral surface and the inner peripheral surface come into contact with each other. The thrust rolling bearing, the inner ring formed on the outer periphery of the spherical convex surface of the power roller, the outer ring,
A plurality of rolling elements held on the rolling surfaces of the inner ring and the outer ring, and a retainer for rotatably holding the plurality of rolling elements are provided. In a toroidal type continuously variable transmission including a plurality of pockets provided at predetermined intervals in a circumferential direction and holding the plurality of rolling elements, the main body includes an inner diameter side member and an outer diameter side member having a uniform thickness. The inner ring and the outer ring are configured such that at least one of the inner diameter side member and the outer diameter side member has a strength that is not easily deformed with respect to the inner ring and the outer ring. A toroidal-type continuously variable transmission characterized in that it is a member that slides with a low coefficient of friction with respect to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001167360A JP4385309B2 (en) | 2001-06-01 | 2001-06-01 | Toroidal continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001167360A JP4385309B2 (en) | 2001-06-01 | 2001-06-01 | Toroidal continuously variable transmission |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2002357255A true JP2002357255A (en) | 2002-12-13 |
| JP2002357255A5 JP2002357255A5 (en) | 2006-08-10 |
| JP4385309B2 JP4385309B2 (en) | 2009-12-16 |
Family
ID=19009755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001167360A Expired - Fee Related JP4385309B2 (en) | 2001-06-01 | 2001-06-01 | Toroidal continuously variable transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4385309B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006308035A (en) * | 2005-05-02 | 2006-11-09 | Nsk Ltd | Toroidal type continuously variable transmission |
| JP2012026567A (en) * | 2010-06-22 | 2012-02-09 | Nsk Ltd | Retainer for thrust rolling bearing, thrust rolling bearing for power roller, and toroidal continuously variable transmission |
| CN113090664A (en) * | 2021-04-01 | 2021-07-09 | 山东金帝精密机械科技股份有限公司 | Plastic-impregnated bearing retainer |
-
2001
- 2001-06-01 JP JP2001167360A patent/JP4385309B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006308035A (en) * | 2005-05-02 | 2006-11-09 | Nsk Ltd | Toroidal type continuously variable transmission |
| JP4706960B2 (en) * | 2005-05-02 | 2011-06-22 | 日本精工株式会社 | Toroidal continuously variable transmission |
| JP2012026567A (en) * | 2010-06-22 | 2012-02-09 | Nsk Ltd | Retainer for thrust rolling bearing, thrust rolling bearing for power roller, and toroidal continuously variable transmission |
| CN113090664A (en) * | 2021-04-01 | 2021-07-09 | 山东金帝精密机械科技股份有限公司 | Plastic-impregnated bearing retainer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4385309B2 (en) | 2009-12-16 |
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