JPH08184359A - Traction drive transmission - Google Patents

Traction drive transmission

Info

Publication number
JPH08184359A
JPH08184359A JP33832494A JP33832494A JPH08184359A JP H08184359 A JPH08184359 A JP H08184359A JP 33832494 A JP33832494 A JP 33832494A JP 33832494 A JP33832494 A JP 33832494A JP H08184359 A JPH08184359 A JP H08184359A
Authority
JP
Japan
Prior art keywords
rotation
outer ring
inner ring
shaft
cage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP33832494A
Other languages
Japanese (ja)
Inventor
Nagao Mizutani
長夫 水谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sayama Precision Ind Co Ltd
Original Assignee
Sayama Precision Ind Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sayama Precision Ind Co Ltd filed Critical Sayama Precision Ind Co Ltd
Priority to JP33832494A priority Critical patent/JPH08184359A/en
Publication of JPH08184359A publication Critical patent/JPH08184359A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To perform regulation of a traction force at each stage and to perform smooth rotation even when displacement and inclination of an axis occur. CONSTITUTION: Formation of a traction drive transmission is such that a rolling body 33 is rotated and revolved between inner and outer rings 32 and 31 by a traction force generated by an oil film and revolutional movement forms rotation of a holder 40, one of rotation of an inner ring and rotation of a holder forms rotation of an input shaft, and the other forms rotation of an output shaft 90. Thus, slits reaching a shaft hole 2 are formed in a case 1 and flexibility is provided. A fastening means is provided to fasten a case in a direction in which a distance between the slits. A nipping pressure on the rolling body 33 by the outer ring 31 is regulatable and a traction force at each stage is regulatable. An internal tooth gear 35a is arranged inside the inner ring 32 and by expanding outward the gear of a transmission shaft 22 engaged with the internal tooth gear and transmitting rotation, displacement and inclination of an axis are relaxed even when the displacement and inclination occurs.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はベアリングを介した小型
のトラクションドライブ変速機に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small traction drive transmission via a bearing.

【0002】[0002]

【従来の技術】油膜を介在させて2つの転動体を押しつ
け圧力を加えて一方を回転させると、押しつけ面の部分
の油が押しつけ圧力によって非常に高い粘度になり、こ
のため油膜のせん断抵抗によってトラクション(けん
引)力が生じて、他方がひきずられてころがり回転する
いわゆるトラクションドライブが知られている。
2. Description of the Related Art When two rolling elements are pressed against each other with an oil film interposed between them and one of them is rotated, the oil on the pressing surface has a very high viscosity due to the pressing pressure, which causes shear resistance of the oil film. A so-called traction drive in which a traction (traction) force is generated and the other is dragged to roll and rotate is known.

【0003】従来、一般的には入力軸の回転を出力軸に
回転数を変えて伝達する変速装置として、太陽歯車とそ
の外側を囲む内歯歯車の間を複数の遊星歯車が自転しな
がら公転する遊星歯車装置が多く用いられている。
Conventionally, as a transmission device for transmitting the rotation of the input shaft to the output shaft by changing the rotation speed, a plurality of planetary gears revolve around the sun gear and an internal gear that surrounds the outer periphery of the sun gear while rotating on its axis. A planetary gear device that does this is often used.

【0004】しかし、この遊星歯車装置では、多数の歯
車相互の噛み合いのため、騒音や振動が生じる、歯の折
損が生じやすい、小型化が容易でないなどの欠点があ
る。このため、従来より、歯車の代わりに、前記したト
ラクションドライブを利用した遊星転動装置を用いたト
ラクションドライブ変速機が用いられている(例えば特
開昭55−86949、特開昭58−46252)。
However, this planetary gear device has drawbacks such that noise and vibration are generated, teeth are easily broken, and miniaturization is not easy because a large number of gears are meshed with each other. For this reason, conventionally, instead of a gear, a traction drive transmission using a planetary rolling device utilizing the traction drive has been used (for example, JP-A-55-86949 and JP-A-58-46252). .

【0005】即ち、このトラクションドライブ変速機
は、内輪と外輪との間に転動体を油膜を介して強く挟圧
して、トラクション力によって内輪と外輪との間を転動
体を自転させながら公転させ、この転動体の公転運動を
転動体の保持器の回転とするものであって、このトラク
ション力による遊星転動装置を一段あるいは複数段連結
し、内輪の回転と保持器の回転のいずれか一方を入力
軸、他方を出力軸として取り出すものである。
That is, in this traction drive transmission, the rolling element is strongly pinched between the inner ring and the outer ring via the oil film, and the rolling element is revolved while rotating between the inner ring and the outer ring by the traction force. The revolution of the rolling element is used as the rotation of the cage of the rolling element, and the planetary rolling device by this traction force is connected in one or more stages, and either one of the inner ring rotation and the cage rotation is The input shaft and the other are taken out as the output shaft.

【0006】[0006]

【発明が解決しようとする課題】しかして、この種のト
ラクションドライブ変速機では、転動体の転動における
一定のトラクション力を付与することが必要であるが、
従来のトラクションドライブ変速機では、ケース内で組
立て時に外輪に予め決まった一定の圧力を付与するよう
にしているため、このトラクション力は温度変化、負荷
変動などによっても変化するため、これに応じて外輪へ
の圧力を微調整する必要があるが、従来では組立て時に
一定圧力を付与する構造のため、このように変化に対応
してトラクション力を調整することが不可能であり、ま
た、外輪が複数段ある場合に各段ごとのトラクション力
の調整ができなかった。
However, in this type of traction drive transmission, it is necessary to apply a constant traction force in rolling of the rolling elements.
In a conventional traction drive transmission, a predetermined constant pressure is applied to the outer ring during assembly in the case, so this traction force also changes due to temperature changes, load changes, etc. Although it is necessary to finely adjust the pressure to the outer ring, it is impossible to adjust the traction force in response to such a change because the structure that applies a constant pressure during assembly has been impossible in the past. When there are multiple stages, it was not possible to adjust the traction force for each stage.

【0007】また、内輪の回転軸及び保持器の回転軸が
軸方向に完全に一致していないと、トラクション力が回
転の全周において一定にならず、回転むらが生じて騒音
が生じるばかりでなく、磨耗や破損の原因となり、寿命
が劣化するが、超小型のトラクションドライブ変速機で
は、軸心のズレや傾きを全く零に加工したり、組立て時
にこれらを軸方向にズレや傾きなく完全に一致させるこ
とはほとんど不可能であって、部品加工精度が極めて厳
しくなると共に、組立てにも高度の技術を要し、小型化
が困難となり、コスト高となっていた。本発明はこれら
の問題を解決したトラクションドライブ変速機を提供す
ることを目的としている。
If the rotary shaft of the inner ring and the rotary shaft of the cage are not perfectly aligned in the axial direction, the traction force will not be constant over the entire circumference of the rotation, causing uneven rotation and noise. However, in a microminiature traction drive transmission, shaft misalignment and tilt can be machined to zero, or they can be completely assembled without any axial misalignment or tilt during assembly. Since it is almost impossible to match with the above, the precision of processing the parts becomes extremely strict, and a high technology is required for assembling, which makes it difficult to reduce the size, resulting in a high cost. It is an object of the present invention to provide a traction drive transmission that solves these problems.

【0008】[0008]

【課題を解決するための手段】前記目的を達成するため
に本発明のトラクションドライブ変速機では、請求項1
のトラクションドライブ変速機では、ケースの軸穴の両
端に入力軸と出力軸を回動自在に設け、外輪、内輪、転
動体、保持器から成るベアリングのような遊星転動装置
を少なくとも一段収容し、前記ケースの軸穴に前記外輪
を固定し、前記外輪と内輪との間で油膜を介して前記転
動体を挟圧し、内輪及び外輪との間を油膜によるトラク
ション力によって前記転動体を自転且つ公転させ、該公
転運動を前記保持器の回転とし、前記内輪の回転と前記
保持器の回転とのいずれか一方を前記入力軸の回転と
し、他方を前記出力軸の回転としたトラクションドライ
ブ変速機において、前記ケースに前記軸穴に達するスリ
ットを設けて撓み可能とし、該スリットの間隔を狭める
方向にケースを締め付ける締付け手段とを設けて、前記
外輪による転動体への挟圧力を調整可能にしている。
In order to achieve the above object, a traction drive transmission according to the present invention comprises:
In the traction drive transmission, the input shaft and the output shaft are rotatably provided at both ends of the shaft hole of the case, and at least one planetary rolling device such as a bearing composed of an outer ring, an inner ring, rolling elements, and a cage is housed. Fixing the outer ring in the shaft hole of the case, pinching the rolling element through an oil film between the outer ring and the inner ring, and rotating the rolling element between the inner ring and the outer ring by a traction force due to the oil film. A traction drive transmission in which the revolving motion is the rotation of the retainer, one of the rotation of the inner ring and the rotation of the retainer is the rotation of the input shaft, and the other is the rotation of the output shaft. In the case, a slit reaching the shaft hole is provided in the case so that the case can be flexed, and a tightening means for tightening the case in a direction of narrowing the interval of the slit is provided, and the case is provided to the rolling element by the outer ring. Which enables adjusting the clamping pressure.

【0009】請求項2のトラクションドライブ変速機で
は、前記ケースの撓み可能部分を軸方向に前記複数段の
遊星転動装置に対応して複数段に分割し、前記締付け手
段を複数段の遊星転動装置の各外輪に対応して複数段に
設けて、転動体への挟圧力の調整を各段ごとに可能にし
ている。
In the traction drive transmission according to the present invention, the flexible portion of the case is axially divided into a plurality of stages corresponding to the plurality of stages of planetary rolling devices, and the tightening means is provided with a plurality of stages of planetary rolling. It is provided in a plurality of stages corresponding to each outer ring of the moving device, so that the clamping pressure on the rolling elements can be adjusted for each stage.

【0010】請求項3のトラクションドライブ変速機で
は、前記内輪の内側に内歯歯車を設け、該内歯歯車と噛
み合って回転を伝達する伝達軸の歯車を外方に向かって
膨出させている。
In the traction drive transmission of claim 3, an internal gear is provided inside the inner ring, and a gear of a transmission shaft that meshes with the internal gear and transmits rotation is bulged outward. .

【0011】請求項4のトラクションドライブ変速機で
は、前記内輪の内側に、伝達軸の歯車と噛み合うための
内歯歯車を弾性体を介して設けている。
In the traction drive transmission of the fourth aspect, an internal gear is provided inside the inner ring for engaging with a gear of the transmission shaft via an elastic body.

【0012】請求項5のトラクションドライブ変速機で
は、前記内輪の内側に軸方向の係合溝を設け、伝達軸に
該係合溝に係合して回転を伝達する係合突起を設けてい
る。
In the traction drive transmission according to the present invention, an engagement groove in the axial direction is provided inside the inner ring, and an engagement projection for engaging the engagement groove and transmitting rotation is provided on the transmission shaft. .

【0013】請求項6のトラクションドライブ変速機で
は、前記内輪の内側に内方に突出した係合突起を設け、
伝達軸に該係合突起に係合して回転する軸方向の係合溝
を設けている。
In the traction drive transmission of claim 6, an inwardly projecting engagement protrusion is provided inside the inner ring,
The transmission shaft is provided with an axial engagement groove that engages with the engagement protrusion and rotates.

【0014】請求項7のトラクションドライブ変速機で
は、前記保持器の回転の伝達軸と前記保持器との間に弾
性手段を介在させている。
In the traction drive transmission according to the seventh aspect, elastic means is interposed between the rotation transmission shaft of the cage and the cage.

【0015】[0015]

【作用】請求項1の構成では、スリットの間隔を狭める
方向への締付け手段での締付け力を調節することによっ
て、自由に外輪への圧力を変えてトラクション力を調整
できる。
In the structure of the first aspect, the traction force can be adjusted by freely changing the pressure on the outer ring by adjusting the tightening force of the tightening means in the direction of narrowing the gap between the slits.

【0016】請求項2の構成では、各段ごとの遊星転動
装置の外輪の位置に対応してケースの撓み可能部分を軸
方向に分割し、各部分ごとにそれぞれ締付け手段を設け
たので、各段ごとにトラクション力を調整することがで
きる。
According to the second aspect of the invention, the flexible portion of the case is axially divided corresponding to the position of the outer ring of the planetary rolling device for each stage, and the tightening means is provided for each portion. The traction force can be adjusted for each step.

【0017】請求項3の構成では、遊星転動装置の内輪
の内側に設けた内歯歯車に噛み合う伝達軸の歯車を外方
に向かって膨出させているため、伝達軸や内歯歯車に軸
心のズレや傾きがあっても、これを緩和して円滑に回転
が伝達される。
According to the third aspect of the invention, since the gear of the transmission shaft that meshes with the internal gear provided inside the inner ring of the planetary rolling device is bulged outward, the transmission shaft and the internal gear are Even if there is a deviation or inclination of the shaft center, this is alleviated and the rotation is transmitted smoothly.

【0018】請求項4の構成では、内輪と内歯歯車との
間の弾性体で軸心のズレや傾きによる回転のぶれが吸収
されるため、伝達軸や内歯歯車に軸心のズレや傾きがあ
っても、これを緩和して円滑に回転が伝達される。
In the structure of claim 4, since the elastic body between the inner ring and the internal gear absorbs the deviation of the shaft center and the rotational deviation due to the inclination, the transmission shaft and the internal gear have the shaft center misalignment. Even if there is a tilt, this is alleviated and the rotation is transmitted smoothly.

【0019】請求項5あるいは請求項6の構成では、係
合突起と軸方向の係合溝によって回転伝達されるため、
回転伝達において軸方向の拘束を受けることがなくな
り、このため軸心のズレや傾きがあっても緩和されて、
円滑に回転が伝達される。
According to the fifth or sixth aspect of the invention, since the rotation is transmitted by the engagement protrusion and the engagement groove in the axial direction,
There is no axial constraint on the rotation transmission, so even if there is a deviation or inclination of the shaft center,
Rotation is transmitted smoothly.

【0020】請求項7の構成では、保持器と伝達軸との
間に介在する弾性手段によって、軸心のズレや傾きが吸
収されて、円滑に回転が伝達される。
According to the seventh aspect of the invention, the elastic means interposed between the retainer and the transmission shaft absorbs the deviation or inclination of the shaft center and smoothly transmits the rotation.

【0021】[0021]

【実施例】以下、図面に基づいて本発明の実施例を説明
する。図1は本発明のトラクションドライブ変速機の一
実施例を示している。ケース1は円柱状の金属から成
り、図2に示すように円の中心から偏心した位置におい
て断面が円形の軸方向に貫通した軸穴2を有している。
軸穴2の一端側は、図1に示すように同心円の大径部2
aとなっている。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the traction drive transmission of the present invention. The case 1 is made of a cylindrical metal, and has a shaft hole 2 penetrating in the axial direction with a circular cross section at a position eccentric from the center of the circle as shown in FIG.
As shown in FIG. 1, the one end side of the shaft hole 2 has a large diameter portion 2 of a concentric circle.
It is a.

【0022】円柱状のケース1の肉厚部は、軸穴2から
半径方向に外方に達し、且つ軸方向の両端に達するスリ
ット3で、2つの部分1a、1a′に分割されている。
このため、ケース1は、スリット3の幅が狭まる方向に
力を加えることによって2つに分割された部分1a、1
a′を肉薄部1bを中心に撓ませることができる。
The thick portion of the cylindrical case 1 is divided into two parts 1a, 1a 'by a slit 3 which extends radially outward from the axial hole 2 and reaches both ends in the axial direction.
Therefore, the case 1 is divided into two parts 1a, 1 by applying a force in a direction in which the width of the slit 3 is narrowed.
It is possible to bend a ′ around the thin portion 1b.

【0023】そして、このスリット3から円柱状のケー
ス1の半円にわたって、一方の肉厚部1aから肉薄部1
bに達する軸方向に対して垂直方向の複数本、例えば3
本のスリット4が設けられ、この3本のスリット4によ
って軸方向の幅が狭い2つの幅狭部5a、5bが構成さ
れている。このため、2つの幅狭部5a、5bはスリッ
ト3の幅が狭まる方向に一層撓ませやすくなっている。
この2つの幅狭部5a、5bは、それぞれ軸穴2には収
容される後述する2段の遊星転動装置30、50の各外
輪31、51の位置に対応している。
Then, from the slit 3 to the semicircle of the cylindrical case 1, one thick portion 1a to one thin portion 1
a plurality of lines perpendicular to the axial direction reaching b, for example, 3
Two slits 4 are provided, and the three slits 4 form two narrow portions 5a and 5b having a narrow axial width. Therefore, the two narrow portions 5a and 5b are more easily bent in the direction in which the width of the slit 3 is narrowed.
The two narrow portions 5a, 5b correspond to the positions of the outer rings 31, 51 of the two-stage planetary rolling devices 30, 50 described later, which are housed in the shaft holes 2, respectively.

【0024】肉厚部1aには、スリット3と平行な壁面
6aを有する切欠き6が設けられている。そして、スリ
ット4で隔てられた4つの部分の各壁面6aからスリッ
ト3に対して垂直な方向にネジ挿通穴7a、7b、7
c、7dが設けられ、そのまま同一直線方向に他方の肉
厚部1a′にネジ穴8a、8b、8c、8dが設けられ
ていて、ネジ9をネジ挿通穴7a〜7d側から挿通して
ネジ穴8a〜8dにねじ込んで、スリット3が狭くなる
方向に締め付けることができる。
The thick portion 1a is provided with a notch 6 having a wall surface 6a parallel to the slit 3. Then, from the respective wall surfaces 6a of the four parts separated by the slit 4, screw insertion holes 7a, 7b, 7 are formed in a direction perpendicular to the slit 3.
c, 7d are provided, and screw holes 8a, 8b, 8c, 8d are provided in the other thick portion 1a 'in the same straight line direction as they are, and the screw 9 is inserted from the screw insertion holes 7a to 7d side and screwed. The slits 3 can be screwed into the holes 8a to 8d and tightened in a direction in which the slit 3 becomes narrow.

【0025】従って、幅狭部5a、5bのネジ挿通穴7
b、7cにおいてそれぞれネジ9を締め付ける力を調整
することによって、この幅狭部5a、5bに対応した各
段の外輪31、51ごとに独立して外輪31、51を締
め付ける圧力を調整することができる。
Therefore, the screw insertion holes 7 of the narrow portions 5a and 5b are formed.
It is possible to adjust the pressure for tightening the outer rings 31, 51 independently for each outer ring 31, 51 of each step corresponding to the narrow portions 5a, 5b by adjusting the tightening force of the screw 9 in each of b and 7c. it can.

【0026】なお、スリット4を設けず、全体的に一体
に締付け力を調整するようにしてもよいことは勿論であ
る。なお、図4に示すように例えば幅狭部5a、5bな
どにスリット3に平行で軸穴2までは達しないもう1本
のスリット10を設けて、一方の肉厚部1aを2分割し
てバネ性を持たせることによって温度などによる形状変
化に対して、締付け力の変動を少なくすることができ
る。
Of course, the slit 4 may not be provided, and the tightening force may be adjusted integrally as a whole. As shown in FIG. 4, another slit 10 that is parallel to the slit 3 and does not reach the shaft hole 2 is provided in the narrow portions 5a and 5b, and one thick portion 1a is divided into two. By providing the elasticity, it is possible to reduce the fluctuation of the tightening force against the shape change due to temperature and the like.

【0027】図1に示すように軸穴2の大径部2aには
モーター20の一端側が収容され、ネジ挿通穴7a、ネ
ジ穴8aにおいてネジ9を締め付けることによって固定
されている。モーター20の駆動軸20aには、円筒状
のゴムなどから成る弾性ジョイント21によって先端側
に歯車22aが形成された伝達軸22が連結されてい
る。
As shown in FIG. 1, one end of the motor 20 is accommodated in the large diameter portion 2a of the shaft hole 2 and is fixed by tightening a screw 9 in the screw insertion hole 7a and the screw hole 8a. A drive shaft 20a of the motor 20 is connected to a transmission shaft 22 having a gear 22a formed on the tip side by an elastic joint 21 made of cylindrical rubber or the like.

【0028】軸穴2には円筒状のスペーサー23がモー
ター20の先端に接触した状態で収容され、このスペー
サー23に接触した状態で第1段目のベアリングから成
る遊星転動装置30の外輪31が収容され、ネジ挿通穴
7b、ネジ穴8bにおいてネジ9の締付けによって固定
されている。この外輪31がケース1の2本のスリット
4、4で形成される幅狭部5aに位置するようにスペー
サー23の軸方向長さが設定されている。
A cylindrical spacer 23 is accommodated in the shaft hole 2 in a state of being in contact with the tip of the motor 20, and in a state of being in contact with the spacer 23, an outer ring 31 of a planetary rolling device 30 comprising a first stage bearing. Are accommodated and fixed by tightening the screw 9 in the screw insertion hole 7b and the screw hole 8b. The axial length of the spacer 23 is set so that the outer ring 31 is located in the narrow portion 5a formed by the two slits 4 and 4 of the case 1.

【0029】遊星転動装置30は、外輪31と、内輪3
2と、外輪31と内輪32間に挟圧された例えば図1で
は球状(円柱状でもよい)の複数の転動体33とを備え
ている。外輪31及び内輪32には球状の転動体33と
面接触するための断面円弧状の環状凹部が全周にわたっ
て設けられていて、トラクションオイルあるいはグリー
スの油膜(図示せず)を介して、外輪31及び内輪32
と転動体33とが、ネジ19によるケース1の幅狭部5
aにおける締付け力によって一定の圧力を与えられて接
触しており、このため、内輪32が回転すると、トラク
ション力によって転動体33はころがり回転して外輪3
1と内輪32の間を自転しつつ公転する。
The planetary rolling device 30 includes an outer ring 31 and an inner ring 3
2 and a plurality of rolling elements 33 having a spherical shape (which may be a cylindrical shape in FIG. 1) sandwiched between the outer ring 31 and the inner ring 32. The outer ring 31 and the inner ring 32 are provided with annular recesses having an arcuate cross-section for making surface contact with the spherical rolling elements 33 over the entire circumference, and the outer ring 31 is provided through an oil film (not shown) of traction oil or grease. And inner ring 32
And the rolling element 33 are the narrow portion 5 of the case 1 formed by the screw 19.
Since a constant pressure is applied by the tightening force at a, and the inner ring 32 rotates, the rolling elements 33 roll and rotate due to the traction force and the outer ring 3 rotates.
It revolves while rotating between 1 and the inner ring 32.

【0030】複数の転動体33は、保持器40によって
一定間隔を保ったまま任意方向に転動可能に保持されて
いて、保持器40は複数の転動体33の公転運動によっ
て回転する。内輪32の内側には、前記伝達軸22の先
端の歯車22aに噛み合う内歯歯車35aが一端側に形
成された円筒体35が圧入されていて、このため円筒体
35と内輪32とは一体的に回転する。
The plurality of rolling elements 33 are held by a retainer 40 so that they can be rolled in arbitrary directions while maintaining a constant interval, and the retainer 40 is rotated by the revolution movement of the plurality of rolling elements 33. Inside the inner ring 32, a cylindrical body 35 in which an internal gear 35a that meshes with a gear 22a at the tip of the transmission shaft 22 is formed at one end side is press-fitted, so that the cylindrical body 35 and the inner ring 32 are integrally formed. Rotate to.

【0031】このため、モーター20の駆動軸20aが
回転すると、弾性ジョイント21を介して伝達軸22が
回転し、この回転が円筒体35へ伝達されて、円筒体3
5と一体的に内輪32が回転する。このため、外輪31
と内輪32との間を複数の転動体33が油膜のトラクシ
ョン力によってころがり回転して自転しつつ公転し、こ
の公転運動によって、保持器34は回転する。この回転
数は公転運動のためモーター20の駆動軸20aの回転
数より大幅に減速された回転数となっている。
Therefore, when the drive shaft 20a of the motor 20 rotates, the transmission shaft 22 rotates via the elastic joint 21, and this rotation is transmitted to the cylindrical body 35, and the cylindrical body 3
The inner ring 32 rotates integrally with the vehicle 5. Therefore, the outer ring 31
A plurality of rolling elements 33 roll between the inner ring 32 and the inner ring 32 due to the traction force of the oil film to rotate while revolving, and the retainer 34 rotates by this revolving motion. This rotation speed is a rotation speed that is significantly reduced from the rotation speed of the drive shaft 20a of the motor 20 due to the revolution movement.

【0032】しかして、図1のトラクションドライブ変
速機を超小型にした場合、前記伝達軸22も超小型とな
り、この伝達軸22や、内輪32や、モーター20の駆
動軸20aなどを軸心のズレや傾きを完全に零に加工し
たり、組立てにおいて軸心をすべて完全に一致させ、ズ
レや傾きを零にすることは極めて困難である。そして、
これらの軸心にズレや傾きがあると、騒音や磨耗を生
じ、寿命が劣化するばかりでなく、転動体33へのトラ
クション力にも不均一が生じて回転の伝達が円滑にでき
なくなるおそれがある。
When the traction drive transmission shown in FIG. 1 is miniaturized, the transmission shaft 22 is also miniaturized, and the transmission shaft 22, the inner ring 32, the drive shaft 20a of the motor 20, etc. It is extremely difficult to process the deviation and the inclination to zero, or to completely match the axes in the assembly to make the deviation and the inclination zero. And
If there is a deviation or inclination in these shaft centers, noise and wear may occur, which not only shortens the service life but also causes uneven traction force to the rolling elements 33, which may prevent smooth transmission of rotation. is there.

【0033】このため、図5に示すように伝達軸22の
歯車22aは、軸方向に直線ではなく、軸方向の中央部
が僅かに外方へ膨出する丸みを有している。このため、
伝達軸22の歯車22aや円筒体35の内歯歯車35a
やモーター20の駆動軸20aに軸心のズレや傾きがあ
っても、伝達軸22の歯車22aの中央部が外方へ膨ら
んでいるため、このような微小なズレや傾きがあって
も、これが緩和されて、不都合なく円滑に回転が伝達さ
れる。
Therefore, as shown in FIG. 5, the gear 22a of the transmission shaft 22 is not a straight line in the axial direction but has a rounded shape in which the central portion in the axial direction slightly bulges outward. For this reason,
The gear 22a of the transmission shaft 22 and the internal gear 35a of the cylindrical body 35
Even if the drive shaft 20a of the motor 20 has a shaft center deviation or inclination, the central portion of the gear 22a of the transmission shaft 22 swells outward, so even if there is such a minute deviation or inclination, This is alleviated and the rotation is smoothly transmitted without any inconvenience.

【0034】なお同じ目的で、図6に示すように内輪3
2と円筒体35との間にゴムなどの弾性体からなる円筒
状の弾性体36を介在させれば、軸心のズレや傾きがあ
っても弾性体36の弾性変形によって吸収されるため、
不都合なく円滑に回転が伝達される。
For the same purpose, as shown in FIG.
If a cylindrical elastic body 36 made of an elastic body such as rubber is interposed between the two and the cylindrical body 35, even if the axial center is displaced or tilted, it is absorbed by the elastic deformation of the elastic body 36.
Rotation is transmitted smoothly without any inconvenience.

【0035】また、同じ目的で、図7に示すように、円
筒体35には内歯歯車35aの代わりに軸方向の複数本
の係合溝35bを設け、伝達軸22には歯車22aの代
わりに、前記係合溝35bの底面35b′に達しない長
さの円柱状の複数の係合溝35bにそれぞれ対応した複
数本の係合突起22bを設けて、伝達軸22の回転によ
って係合突起22bが係合溝35bに係合して円筒体3
5を回転させるようにすれば、係合突起22bは伝達軸
22の軸方向のある一点から突出しているため、軸心の
ズレや傾きがあっても、不都合なく円滑に回転が伝達さ
れる。
For the same purpose, as shown in FIG. 7, the cylindrical body 35 is provided with a plurality of axial engaging grooves 35b instead of the internal gear 35a, and the transmission shaft 22 is replaced with the gear 22a. Is provided with a plurality of engaging projections 22b corresponding to the plurality of cylindrical engaging grooves 35b having a length that does not reach the bottom surface 35b 'of the engaging groove 35b. 22b engages with the engagement groove 35b, and the cylindrical body 3
If 5 is rotated, the engaging projection 22b projects from a certain point in the axial direction of the transmission shaft 22, so that rotation can be smoothly transmitted without any inconvenience even if there is a deviation or inclination of the shaft center.

【0036】なお、図7とは逆の関係にしてもよい。即
ち、円筒体35に内方へ突出する係合突起を設け、伝達
軸22の外周面に軸方向の係合溝を設けてもよい。ま
た、内輪32と円筒体35とを別体にせず一体化し、内
輪32の内側に前記した内歯歯車、あるいは係合溝、あ
るいは係合突起を直接設けてもよい。
The relationship opposite to that shown in FIG. 7 may be used. That is, the cylindrical body 35 may be provided with an engaging protrusion protruding inward, and the outer peripheral surface of the transmission shaft 22 may be provided with an axial engaging groove. Alternatively, the inner ring 32 and the cylindrical body 35 may be integrated without being separated from each other, and the internal gear, the engaging groove, or the engaging protrusion may be directly provided inside the inner ring 32.

【0037】保持器40は、図8に示すように円筒部4
1に球状の複数の転動体33を任意方向に転動可能に保
持するための円形の保持穴42を設けるか、あるいは図
9に示すように円筒部41に軸方向の複数のスリット4
3を設け、円筒部41の一端側に転動体33を、任意方
向に転動可能に保持するための肉厚のフォーク部44を
有した周知の構造である。このため、外輪31と内輪3
2の間を自転しつつ公転する複数の転動体33を任意方
向回転可能に保持しているので、転動体33の公転運動
によって回転する。
The cage 40 has a cylindrical portion 4 as shown in FIG.
1 is provided with a circular holding hole 42 for holding a plurality of spherical rolling elements 33 so as to be rollable in an arbitrary direction, or, as shown in FIG. 9, a plurality of axial slits 4 are formed in a cylindrical portion 41.
3 is a well-known structure having a thick fork portion 44 for holding the rolling element 33 on one end side of the cylindrical portion 41 so as to be rollable in an arbitrary direction. Therefore, the outer ring 31 and the inner ring 3
Since a plurality of rolling elements 33 that revolve while revolving between the two are rotatably held in arbitrary directions, the rolling elements 33 rotate by the revolving motion of the rolling elements 33.

【0038】保持器40の円板部45の中心において先
端に歯車46aを有する伝達軸46が一体的にあるいは
圧入によって固定されている。この伝達軸46の歯車4
6aは、後述する第2段目の遊星転動装置50の内輪5
2の内側の内歯歯車55aに噛み合って、回転を伝達す
る。
At the center of the disc portion 45 of the cage 40, a transmission shaft 46 having a gear 46a at its tip is fixed integrally or by press fitting. Gear 4 of this transmission shaft 46
6a denotes an inner ring 5 of a second-stage planetary rolling device 50, which will be described later.
It meshes with the internal gear 55a on the inner side of 2 to transmit the rotation.

【0039】しかして、このトラクションドライブ変速
機が超小型の場合、この保持器40の伝達軸46を正確
に軸心に一致するように精密に加工することは極めて困
難であり、軸心のズレや傾きを避けがたく、このような
ズレや傾きがあると、回転が円滑に伝達されず、第2段
目の遊星運動が円滑になされなくなるおそれがある。
However, when the traction drive transmission is of a very small size, it is extremely difficult to precisely machine the transmission shaft 46 of the retainer 40 so as to exactly match the shaft center, and the shaft center is displaced. Inclination is unavoidable, and if there is such a deviation or inclination, rotation may not be transmitted smoothly, and the second stage planetary movement may not be performed smoothly.

【0040】このため、この伝達軸46の歯車46aに
図5と同様の外方へ膨出した丸みを設ける。あるいは、
図10に示すようにプラスチックあるいは薄い金属から
成る円板部45に、複数の同一形状の切欠き45aを設
けて幅の細い弾性変形可能な梁部45b(弾性手段)を
形成するか、あるいは図11に示すようにプラスチック
あるいは薄い金属から成る円板部45を蛇腹部45c
(弾性手段)を設けることによって、軸方向に弾性変形
可能にしている。
For this reason, the gear 46a of the transmission shaft 46 is provided with a rounded outward bulge similar to that shown in FIG. Alternatively,
As shown in FIG. 10, a disc portion 45 made of plastic or thin metal is provided with a plurality of notches 45a having the same shape to form a narrow elastically deformable beam portion 45b (elastic means), or As shown in FIG. 11, the disc portion 45 made of plastic or thin metal is attached to the bellows portion 45c.
By providing (elastic means), elastic deformation is possible in the axial direction.

【0041】図10、図11のようにすれば、軸心のズ
レや傾きがあっても、円板部45のこのような梁部45
bあるいは蛇腹部45cなどの弾性手段の弾性によって
吸収されるため、不都合なく円滑に回転が伝達される。
With the arrangements shown in FIGS. 10 and 11, even if there is a deviation or inclination of the shaft center, such a beam portion 45 of the disc portion 45 is formed.
Since it is absorbed by the elasticity of the elastic means such as b or the bellows portion 45c, the rotation is smoothly transmitted without any inconvenience.

【0042】ケース1の軸穴2には、図1に示すように
1段目の遊星転動装置30の外輪31との間に円筒状の
スペーサー47を介して2段目の遊星転動装置50の外
輪51が収容されている。そして、この外輪51が2本
のスリット4、4で構成された幅狭部5bに位置するよ
うにスペーサー47の軸方向長さは設定されている。そ
して、幅狭部5bのネジ挿通穴7c、ネジ穴8cにおい
てネジ9の締め付けによって外輪51が圧迫固定され、
この締付け力の調整によって転動体53へのトラクショ
ン力を調整できる。
As shown in FIG. 1, the shaft hole 2 of the case 1 has a cylindrical spacer 47 between the outer ring 31 of the first stage planetary rolling device 30 and a second stage planetary rolling device. The outer ring 51 of 50 is accommodated. The axial length of the spacer 47 is set so that the outer ring 51 is located in the narrow portion 5b formed by the two slits 4 and 4. Then, the outer ring 51 is compressed and fixed by tightening the screw 9 in the screw insertion hole 7c and the screw hole 8c of the narrow portion 5b,
By adjusting the tightening force, the traction force on the rolling elements 53 can be adjusted.

【0043】第2段目の遊星転動装置50も全く同様
に、外輪51、内輪52、転動体53で構成され、内輪
52には内歯歯車55aを有する円筒体55が圧入され
ている(なお、円筒体55と内輪52とは一体化しても
よいことは前記したとおりである。)。そして、転動体
53の公転運動で回転する保持器60も全く同様で、弾
性手段を介した伝達軸66には歯車66aが設けられて
いる。
Similarly, the planetary rolling device 50 of the second stage is composed of an outer ring 51, an inner ring 52 and a rolling element 53, and a cylindrical body 55 having an internal gear 55a is press-fitted into the inner ring 52 ( As described above, the cylindrical body 55 and the inner ring 52 may be integrated. The cage 60 that rotates by the revolution of the rolling element 53 is exactly the same, and a gear 66a is provided on the transmission shaft 66 via elastic means.

【0044】ケース1の軸穴2の端部には、円筒状のス
ペーサ48を介して2つのベアリング70、80が収容
され、外輪71、81が、ネジ挿通穴7d、ネジ穴8d
においてネジ9の締付けによって固定されている。
At the end of the shaft hole 2 of the case 1, two bearings 70 and 80 are accommodated via a cylindrical spacer 48, and outer rings 71 and 81 are screwed through holes 7d and 8d.
It is fixed by tightening the screw 9.

【0045】これらのベアリング70、80の内輪7
2、82の内側に出力軸90が圧入されていて、出力軸
90はベアリング70、80の内輪72、82と一体的
に回転可能にされている。
Inner ring 7 of these bearings 70, 80
The output shaft 90 is press-fitted into the insides of the bearings 2, 82, and the output shaft 90 is rotatable integrally with the inner rings 72, 82 of the bearings 70, 80.

【0046】ベアリング70の内輪72には内歯歯車7
5aを有する円筒体75が圧入されて、内輪72と一体
的に回転可能にされていて、この内歯歯車75aに第2
段目の伝達軸66の歯車66aが噛み合っている。
The inner ring 72 of the bearing 70 has an internal gear 7
The cylindrical body 75 having 5a is press-fitted so as to be rotatable integrally with the inner ring 72, and the second gear is attached to the internal gear 75a.
The gear 66a of the stage transmission shaft 66 is meshed.

【0047】本発明のトラクションドライブ変速機はこ
のような構成であるから、モーター20の駆動軸20a
の回転は、伝達軸22の歯車22aから円筒体35の内
歯歯車35aを介して第1段目の遊星転動装置30の内
輪32に同一速度で伝達され、転動体33の公転運動で
回転する保持器40で伝達軸46の減速された回転とな
り、この伝達軸46の回転は、さらに第2段目の遊星転
動装置50の内輪52へ伝達され、その転動体53の公
転運動で回転する保持器60の伝達軸66のさらに減速
された回転となる。そして、この伝達軸66の回転がベ
アリング70の内輪72に固定された円筒体75の内歯
歯車75aで伝達されて、ベアリング70、80の内輪
72、82と一体的に出力軸90が回転する。
Since the traction drive transmission of the present invention has such a structure, the drive shaft 20a of the motor 20 is
Is transmitted from the gear 22a of the transmission shaft 22 through the internal gear 35a of the cylindrical body 35 to the inner ring 32 of the first stage planetary rolling device 30 at the same speed, and is rotated by the revolution movement of the rolling element 33. The rotation of the transmission shaft 46 is reduced by the retainer 40, and the rotation of the transmission shaft 46 is further transmitted to the inner ring 52 of the second-stage planetary rolling device 50, and is rotated by the revolution movement of the rolling element 53. The rotation of the transmission shaft 66 of the retainer 60 is further reduced. The rotation of the transmission shaft 66 is transmitted by the internal gear 75a of the cylindrical body 75 fixed to the inner ring 72 of the bearing 70, and the output shaft 90 rotates integrally with the inner rings 72 and 82 of the bearings 70 and 80. .

【0048】なお、図1における入力軸(モーター20
の駆動軸20a)と出力軸90の関係を逆にすれば、増
速機となる。なお、前記実施例では転動体33、53を
球状のものとして説明したが、円筒ローラーを用い、保
持器には軸方向に平行なピンを設けて、ピンに円筒ロー
ラーを回動自在に設けても同様に作動することは勿論で
ある。
The input shaft (motor 20
If the relationship between the drive shaft 20a) and the output shaft 90 is reversed, a speed increaser is obtained. Although the rolling elements 33, 53 are described as spherical in the above embodiment, a cylindrical roller is used, a pin parallel to the axial direction is provided on the retainer, and the cylindrical roller is rotatably provided on the pin. Needless to say, also operates similarly.

【0049】[0049]

【発明の効果】以上説明したように、本発明のトラクシ
ョンドライブ変速機では図1〜4に示すように、ケース
1の軸穴2に達する軸方向のスリット3でケース1の肉
厚部を分割し、このスリット3の間隔を狭める方向への
締付け手段での締付け力を調節することによって、自由
に外輪への圧力を変えてトラクション力を調整できるよ
うにしたから、温度変化や負荷変動に応じてトラクショ
ン力が最適になるように調整することができる。
As described above, in the traction drive transmission of the present invention, as shown in FIGS. 1 to 4, the thick portion of the case 1 is divided by the axial slit 3 reaching the shaft hole 2 of the case 1. However, the traction force can be adjusted by freely changing the pressure on the outer ring by adjusting the tightening force of the tightening means in the direction of narrowing the gap between the slits 3, so that the traction force can be adjusted according to the temperature change or the load change. Can be adjusted to optimize the traction force.

【0050】また、この軸方向のスリット3に対して垂
直なスリット4によって、撓みやすい幅狭部5a、5b
を形成し、この幅狭部5a、5bごとに別個に締付け手
段でトラクション力を調整できるようにしたから、複数
段に遊星転動装置を設けた場合に各段ごとに個々に独立
してトラクション力を微調整することができる。
Further, the slit 4 perpendicular to the axial slit 3 allows the narrow portions 5a and 5b which are easily bent.
Since the narrow portions 5a and 5b are separately formed so that the traction force can be adjusted individually by the tightening means, when the planetary rolling devices are provided in a plurality of stages, the traction force can be independently set in each stage. The force can be fine-tuned.

【0051】また、図4のように一方の肉厚部1aにさ
らにスリット10を設けてバネ性を持たせれば、温度な
どによる形状変化に対して締付け力の変化を少なくする
ことができる。また、超小型にした場合、回転伝達にお
ける伝達軸などの軸心のズレや傾きがないように高精度
に加工することは極めて困難であるが、本発明では、内
輪の内側に内歯歯車を設け、図5に示すように内歯歯車
と噛み合って回転を伝達する伝達軸の歯車を外方に向か
って膨出させたので、軸心のズレや傾きがあっても、こ
れが緩和されて円滑に回転を伝達させることができる。
Further, as shown in FIG. 4, if one of the thick portions 1a is further provided with a slit 10 so as to have a spring property, it is possible to reduce the change in the tightening force with respect to the change in shape due to temperature or the like. Further, in the case of an ultra-small size, it is extremely difficult to process with high accuracy so that there is no deviation or inclination of the shaft center of the transmission shaft or the like in rotation transmission, but in the present invention, the internal gear is provided inside the inner ring. As shown in Fig. 5, the gear of the transmission shaft that meshes with the internal gear and transmits the rotation is bulged outward, so even if there is a misalignment or inclination of the shaft center, this will be alleviated and smoothed. The rotation can be transmitted to.

【0052】また、図6に示すように、内輪の内側に、
伝達軸の歯車と噛み合うための内歯歯車を弾性体を介し
て設ければ、この弾性体によってズレや傾きが吸収され
て、軸心のズレや傾きがあってもこれが緩和されて円滑
に回転が伝達される。
Further, as shown in FIG. 6, inside the inner ring,
If an internal gear for engaging with the gear of the transmission shaft is provided through an elastic body, the elastic body absorbs the deviation or inclination, and even if there is a deviation or inclination of the shaft center, it is alleviated and smooth rotation occurs. Is transmitted.

【0053】また、係合突起を設け、係合突起と軸方向
の係合溝と係合によって軸方向の拘束のない回転伝達と
すれば、軸心のズレや傾きがあっても、円滑に回転が伝
達される。また、保持器と保持器に固定する伝達軸との
間に、図10、図11に示すように弾性手段を介在させ
れば、軸心のズレや傾きが吸収されるから、円滑に回転
が伝達される。
Further, if the engaging projection is provided and the engaging projection and the axial engaging groove engage with each other to perform rotation transmission without axial restraint, even if there is a deviation or inclination of the shaft center, it can be smoothly performed. Rotation is transmitted. Further, if an elastic means is interposed between the retainer and the transmission shaft fixed to the retainer as shown in FIG. 10 and FIG. 11, the misalignment and inclination of the shaft center are absorbed, so that smooth rotation is achieved. Transmitted.

【0054】このため、超小型であっても、厳しい部品
加工精度、厳しい組立精度が要求されなくなるばかりで
なく、製品の各部品の磨耗や寿命劣化を未然に防ぐこと
ができる。また、厳しい加工精度、組立精度が要求され
なくなるから、コスト減にもつながる。
Therefore, even if it is ultra-compact, not only strict parts machining accuracy and strict assembling accuracy are not required, but also wear and life deterioration of each part of the product can be prevented. Further, strict machining accuracy and assembly accuracy are not required, which leads to cost reduction.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例を示す断面図FIG. 1 is a sectional view showing an embodiment of the present invention.

【図2】ケースの斜視図FIG. 2 is a perspective view of a case

【図3】ケースの平面図FIG. 3 is a plan view of the case.

【図4】ケースの他の実施例の断面図FIG. 4 is a sectional view of another embodiment of the case.

【図5】伝達機構を示す断面図FIG. 5 is a sectional view showing a transmission mechanism.

【図6】伝達機構の他の実施例を示す断面図FIG. 6 is a sectional view showing another embodiment of the transmission mechanism.

【図7】伝達機構のさらに他の実施例を示す断面図FIG. 7 is a cross-sectional view showing still another embodiment of the transmission mechanism.

【図8】保持器の一実施例の斜視図FIG. 8 is a perspective view of an embodiment of a cage.

【図9】保持器の他の実施例の斜視図FIG. 9 is a perspective view of another embodiment of the cage.

【図10】保持器のさらに他の実施例を示す側面図FIG. 10 is a side view showing still another embodiment of the cage.

【図11】保持器のさらに他の実施例を示す断面図FIG. 11 is a cross-sectional view showing still another embodiment of the cage.

【符号の説明】[Explanation of symbols]

1 ケース 2 軸穴 3、4 スリット 5a、5b 幅狭部 20 モーター 20a 駆動軸 22 伝達軸 22b 係合突起 30 遊星転動装置 31 外輪 32 内輪 33 転動体 35 円筒体 35a 内歯歯車 35b 係合溝 36 弾性体 40 保持器 45b 梁部 45c 蛇腹部 46 伝達軸 50 遊星転動装置 60 保持器 66 伝達軸 90 出力軸 1 Case 2 Shaft Holes 3, 4 Slits 5a, 5b Narrow Part 20 Motor 20a Drive Shaft 22 Transmission Shaft 22b Engagement Protrusion 30 Planetary Rolling Device 31 Outer Ring 32 Inner Ring 33 Rolling Element 35 Cylindrical Body 35a Internal Gear 35b Engaging Groove 36 Elastic Body 40 Cage 45b Beam 45c Bellows 46 Transmission Shaft 50 Planetary Rolling Device 60 Cage 66 Transmission Shaft 90 Output Shaft

Claims (7)

【特許請求の範囲】[Claims] 【請求項1】ケースの軸穴の両端に入力軸と出力軸を回
動自在に設け、外輪、内輪、転動体、保持器から成る遊
星転動装置を少なくとも一段収容し、前記ケースの軸穴
に前記外輪を固定し、前記外輪と内輪との間で油膜を介
して前記転動体を挟圧し、内輪及び外輪との間を油膜に
よるトラクション力によって前記転動体を自転且つ公転
させ、該公転運動を前記保持器の回転とし、前記内輪の
回転と前記保持器の回転とのいずれか一方を前記入力軸
の回転とし、他方を前記出力軸の回転としたトラクショ
ンドライブ変速機において、 前記ケースに前記軸穴に達するスリットを設けて撓み可
能とし、該スリットの間隔を狭める方向にケースを締め
付ける締付け手段とを設けて、前記外輪による転動体へ
の挟圧力を調整可能にしたことを特徴とするトラクショ
ンドライブ変速機。
1. An input shaft and an output shaft are rotatably provided at both ends of a shaft hole of a case, and at least one stage of a planetary rolling device including an outer ring, an inner ring, a rolling element and a cage is housed therein, and the shaft hole of the case is provided. The outer ring is fixed to the outer ring, the rolling element is squeezed between the outer ring and the inner ring via an oil film, and the rolling element is rotated and revolves between the inner ring and the outer ring by the traction force of the oil film, and the revolving motion. Is the rotation of the retainer, one of the rotation of the inner ring and the rotation of the retainer is the rotation of the input shaft, the other is the rotation of the output shaft in the traction drive transmission, in the case, A slit reaching the shaft hole is provided so as to be bendable, and a tightening means for tightening the case in a direction of narrowing the interval of the slit is provided so that the clamping force of the outer ring on the rolling element can be adjusted. Traction drive transmission.
【請求項2】前記ケースの撓み可能部分を軸方向に前記
複数段の遊星転動装置に対応して複数段に分割し、前記
締付け手段を複数段の遊星転動装置の各外輪に対応して
複数段に設けて、転動体への挟圧力の調整を各段ごとに
可能にしたことを特徴とする請求項1記載のトラクショ
ンドライブ変速機。
2. A flexible portion of the case is axially divided into a plurality of stages corresponding to the plurality of stages of planetary rolling devices, and the tightening means corresponds to each outer ring of the plurality of stages of planetary rolling devices. 2. The traction drive transmission according to claim 1, wherein the traction drive transmission is provided in a plurality of stages so that the clamping force on the rolling elements can be adjusted for each stage.
【請求項3】ケースの軸穴の両端に入力軸と出力軸を回
動自在に設け、外輪、内輪、転動体、保持器から成る遊
星転動装置を少なくとも一段収容し、前記ケースの軸穴
に前記外輪を固定し、前記外輪と内輪との間で油膜を介
して前記転動体を挟圧し、内輪及び外輪との間を油膜に
よるトラクション力によって前記転動体を自転且つ公転
させ、該公転運動を前記保持器の回転とし、前記内輪の
回転と前記保持器の回転とのいずれか一方を前記入力軸
の回転とし、他方を前記出力軸の回転としたトラクショ
ンドライブ変速機において、 前記内輪の内側に内歯歯車を設け、該内歯歯車と噛み合
って回転を伝達する伝達軸の歯車を外方に向かって膨出
させたことを特徴とするトラクションドライブ変速機。
3. An input shaft and an output shaft are rotatably provided at both ends of a shaft hole of the case, and at least one stage of a planetary rolling device including an outer ring, an inner ring, rolling elements and a cage is housed therein, and the shaft hole of the case is provided. The outer ring is fixed to the outer ring, the rolling element is squeezed between the outer ring and the inner ring through an oil film, and the rolling element is rotated and revolves between the inner ring and the outer ring by the traction force of the oil film, and the revolving motion. Is the rotation of the cage, one of the rotation of the inner ring and the rotation of the cage is the rotation of the input shaft, the other is the rotation of the output shaft in the traction drive transmission, the inner side of the inner ring A traction drive transmission, characterized in that an internal gear is provided in the gear, and a gear of a transmission shaft that meshes with the internal gear and transmits rotation is bulged outward.
【請求項4】ケースの軸穴の両端に入力軸と出力軸を回
動自在に設け、外輪、内輪、転動体、保持器から成る遊
星転動装置を少なくとも一段収容し、前記ケースの軸穴
に前記外輪を固定し、前記外輪と内輪との間で油膜を介
して前記転動体を挟圧し、内輪及び外輪との間を油膜に
よるトラクション力によって前記転動体を自転且つ公転
させ、該公転運動を前記保持器の回転とし、前記内輪の
回転と前記保持器の回転とのいずれか一方を前記入力軸
の回転とし、他方を前記出力軸の回転としたトラクショ
ンドライブ変速機において、 前記内輪の内側に、伝達軸の歯車と噛み合うための内歯
歯車を弾性体を介して設けたことを特徴とするトラクシ
ョンドライブ変速機。
4. An input shaft and an output shaft are rotatably provided at both ends of a shaft hole of a case, and at least one stage of a planetary rolling device including an outer ring, an inner ring, rolling elements, and a cage is housed therein, and the shaft hole of the case is provided. The outer ring is fixed to the outer ring, the rolling element is squeezed between the outer ring and the inner ring via an oil film, and the rolling element is rotated and revolves between the inner ring and the outer ring by the traction force of the oil film, and the revolving motion. Is the rotation of the cage, one of the rotation of the inner ring and the rotation of the cage is the rotation of the input shaft, the other is the rotation of the output shaft in the traction drive transmission, the inner side of the inner ring A traction drive transmission characterized in that an internal gear for meshing with a gear of a transmission shaft is provided through an elastic body.
【請求項5】ケースの軸穴の両端に入力軸と出力軸を回
動自在に設け、外輪、内輪、転動体、保持器から成る遊
星転動装置を少なくとも一段収容し、前記ケースの軸穴
に前記外輪を固定し、前記外輪と内輪との間で油膜を介
して前記転動体を挟圧し、内輪及び外輪との間を油膜に
よるトラクション力によって前記転動体を自転且つ公転
させ、該公転運動を前記保持器の回転とし、前記内輪の
回転と前記保持器の回転とのいずれか一方を前記入力軸
の回転とし、他方を前記出力軸の回転としたトラクショ
ンドライブ変速機において、 前記内輪の内側に軸方向の係合溝を設け、伝達軸に該係
合溝に係合して回転を伝達する係合突起を設けたことを
特徴とするトラクションドライブ変速機。
5. An input shaft and an output shaft are rotatably provided at both ends of a shaft hole of the case, and at least one stage of a planetary rolling device including an outer ring, an inner ring, rolling elements, and a cage is housed therein, and the shaft hole of the case is provided. The outer ring is fixed to the outer ring, the rolling element is squeezed between the outer ring and the inner ring via an oil film, and the rolling element is rotated and revolves between the inner ring and the outer ring by the traction force of the oil film, and the revolving motion. Is the rotation of the cage, one of the rotation of the inner ring and the rotation of the cage is the rotation of the input shaft, the other is the rotation of the output shaft in the traction drive transmission, the inner side of the inner ring A traction drive transmission characterized in that an engaging groove in the axial direction is provided in the transmission shaft, and an engaging projection that engages with the engaging groove and transmits rotation is provided in the transmission shaft.
【請求項6】ケースの軸穴の両端に入力軸と出力軸を回
動自在に設け、外輪、内輪、転動体、保持器から成る遊
星転動装置を少なくとも一段収容し、前記ケースの軸穴
に前記外輪を固定し、前記外輪と内輪との間で油膜を介
して前記転動体を挟圧し、内輪及び外輪との間を油膜に
よるトラクション力によって前記転動体を自転且つ公転
させ、該公転運動を前記保持器の回転とし、前記内輪の
回転と前記保持器の回転とのいずれか一方を前記入力軸
の回転とし、他方を前記出力軸の回転としたトラクショ
ンドライブ変速機において、 前記内輪の内側に内方に突出した係合突起を設け、伝達
軸に該係合突起に係合して回転を伝達する軸方向の係合
溝を設けたことを特徴とするトラクションドライブ変速
機。
6. A shaft shaft hole of the case, wherein an input shaft and an output shaft are rotatably provided at both ends of the shaft hole of the case, and at least one stage of a planetary rolling device including an outer ring, an inner ring, rolling elements, and a cage is housed therein. The outer ring is fixed to the outer ring, the rolling element is squeezed between the outer ring and the inner ring via an oil film, and the rolling element is rotated and revolves between the inner ring and the outer ring by the traction force of the oil film, and the revolving motion. Is the rotation of the cage, one of the rotation of the inner ring and the rotation of the cage is the rotation of the input shaft, the other is the rotation of the output shaft in the traction drive transmission, the inner side of the inner ring A traction drive transmission characterized in that an engaging projection protruding inward is provided on the shaft, and an axial engaging groove that engages with the engaging projection and transmits rotation is provided on the transmission shaft.
【請求項7】ケースの軸穴の両端に入力軸と出力軸を回
動自在に設け、外輪、内輪、転動体、保持器から成る遊
星転動装置を少なくとも一段収容し、前記ケースの軸穴
に前記外輪を固定し、前記外輪と内輪との間で油膜を介
して前記転動体を挟圧し、内輪及び外輪との間を油膜に
よるトラクション力によって前記転動体を自転且つ公転
させ、該公転運動を前記保持器の回転とし、前記内輪の
回転と前記保持器の回転とのいずれか一方を前記入力軸
の回転とし、他方を前記出力軸の回転としたトラクショ
ンドライブ変速機において、 前記保持器の回転の伝達軸と前記保持器との間に弾性手
段を介在させたことを特徴とするトラクションドライブ
変速機。
7. An input shaft and an output shaft are rotatably provided at both ends of a shaft hole of a case, and at least one stage of a planetary rolling device including an outer ring, an inner ring, rolling elements and a cage is housed therein, and the shaft hole of the case is provided. The outer ring is fixed to the outer ring, the rolling element is squeezed between the outer ring and the inner ring via an oil film, and the rolling element is rotated and revolves between the inner ring and the outer ring by the traction force of the oil film, and the revolving motion. Is the rotation of the cage, one of the rotation of the inner ring and the rotation of the cage is the rotation of the input shaft, the other is the rotation of the output shaft in the traction drive transmission, A traction drive transmission characterized in that elastic means is interposed between a rotation transmission shaft and the cage.
JP33832494A 1994-12-31 1994-12-31 Traction drive transmission Pending JPH08184359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33832494A JPH08184359A (en) 1994-12-31 1994-12-31 Traction drive transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33832494A JPH08184359A (en) 1994-12-31 1994-12-31 Traction drive transmission

Publications (1)

Publication Number Publication Date
JPH08184359A true JPH08184359A (en) 1996-07-16

Family

ID=18317077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33832494A Pending JPH08184359A (en) 1994-12-31 1994-12-31 Traction drive transmission

Country Status (1)

Country Link
JP (1) JPH08184359A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006234079A (en) * 2005-02-25 2006-09-07 Mitsubishi Heavy Ind Ltd Traction drive device
CN113028020A (en) * 2021-04-01 2021-06-25 韦兆利 Multi-stage transmission device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006234079A (en) * 2005-02-25 2006-09-07 Mitsubishi Heavy Ind Ltd Traction drive device
CN113028020A (en) * 2021-04-01 2021-06-25 韦兆利 Multi-stage transmission device
CN113028020B (en) * 2021-04-01 2022-11-25 韦兆利 Multi-stage transmission device

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