JPH0429889B2 - - Google Patents
Info
- Publication number
- JPH0429889B2 JPH0429889B2 JP58115817A JP11581783A JPH0429889B2 JP H0429889 B2 JPH0429889 B2 JP H0429889B2 JP 58115817 A JP58115817 A JP 58115817A JP 11581783 A JP11581783 A JP 11581783A JP H0429889 B2 JPH0429889 B2 JP H0429889B2
- Authority
- JP
- Japan
- Prior art keywords
- roller
- rollers
- planetary
- ring
- transmission
- 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.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims description 17
- 229910001566 austenite Inorganic materials 0.000 claims description 5
- 229910000734 martensite Inorganic materials 0.000 claims description 5
- 230000001131 transforming effect Effects 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims 1
- 230000036316 preload Effects 0.000 description 8
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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
- F16H—GEARING
- F16H13/00—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
- F16H13/06—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members with members having orbital motion
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pulleys (AREA)
- Friction Gearing (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は一般の減速、増速機に用いられる遊星
式摩擦変速機に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a planetary friction transmission used in general speed reduction and speed increase gears.
遊星式摩擦変速機は歯車装置におけるかみ合い
運転がないため、高速運転、低振動である特長を
有しているが、歯車装置に匹敵する動力伝達容量
はローラ間の適切なローラ圧接力によつて設定さ
れる。従来、このローラ間の圧接力の設定の一方
策として、遊星ローラの外周に配置されるリング
ローラをＵ字形断面をもつ弾性リングで構成し、
ローラ間の予圧荷重をＵ字形弾性リングの側面に
力を加えて、これの内径側を半径方向に変形させ
ることによつて行つている。伝達動力を増大させ
るためには、Ｕ字形弾性リングの幅を広くし相手
ローラとの接触面積を増やすことが有効である
が、リングローラはその断面形状がＵ字形である
ため幅を広くとつても接触面積はそれ程広くなら
ない。従つて、伝達動力を大きくとれないという
欠点を有する。又、Ｕ字形弾性リングの形状が複
雑なため加工工数がかかるという欠点も有する。
Planetary friction transmissions have the features of high speed operation and low vibration because there is no interlocking operation in the gear system, but the power transmission capacity comparable to that of a gear system is due to the appropriate roller contact force between the rollers. Set. Conventionally, as a way to set the pressure contact force between the rollers, a ring roller disposed around the outer circumference of the planetary roller is configured with an elastic ring having a U-shaped cross section.
The preload between the rollers is achieved by applying force to the side surface of the U-shaped elastic ring and deforming the inner diameter side of the ring in the radial direction. In order to increase the transmitted power, it is effective to increase the width of the U-shaped elastic ring to increase the contact area with the mating roller, but since the cross-sectional shape of the ring roller is U-shaped, it is effective to increase the width of the U-shaped elastic ring. However, the contact area is not that large. Therefore, it has the disadvantage that a large amount of transmitted power cannot be obtained. Furthermore, since the U-shaped elastic ring has a complicated shape, it also has the disadvantage of requiring many man-hours for processing.
本発明の目的は、所定の温度を境にして、それ
以上温度が上昇しても予圧負荷を適正に与えるこ
とができ、かつ組立てが容易である摩擦変速機を
提供することにある。
An object of the present invention is to provide a friction transmission that can appropriately apply a preload load even if the temperature rises beyond a predetermined temperature, and that is easy to assemble.
本発明は上記目的を達成するために、遊星式摩
擦変速機を構成する各種ローラのうち、遊星ロー
ラを、変態により体積膨脹が生じる形状記憶合金
で構成し、各ローラの組立時には形状記憶合金が
オーステナイト組織にある体積の小さい形状状態
とし、負荷時にはマルテンサイト組織である体積
の大きな形状状態にして、負荷時にローラ同志に
接触圧力を予め与えるようにしたものである。
In order to achieve the above object, the present invention constructs the planetary rollers among the various rollers constituting the planetary friction transmission from a shape memory alloy that expands in volume due to transformation, and when assembling each roller, the shape memory alloy The rollers are in a shape state with a small volume, which is an austenite structure, and are in a shape state with a large volume, which is a martensitic structure, when a load is applied, and contact pressure is applied to the rollers in advance when a load is applied.
以下、本発明の一実施例を図面により説明す
る。第１図および第２図は本発明の変速機の一実
施例を示すもので、図において、太陽ローラ１
は、円筒形状で軸６と一体で回転する。遊星ロー
ラ２，３，４は、変速機の負荷時雰囲気温度でオ
ーステナイト組織からマルテンサイト組織に変態
することによつて体積が変化する形状記憶合金で
構成され軸７，８，９を中心に回転する。軸７，
８，９はアーム１０に連結されている。アーム１
０は、軸１１を中心に回転可能である。遊星ロー
ラ２，３，４の外周にはリングローラ５が配置さ
れている。
An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the transmission of the present invention. In the figures, a sun roller 1
has a cylindrical shape and rotates integrally with the shaft 6. The planetary rollers 2, 3, and 4 are made of a shape memory alloy whose volume changes by transforming from an austenite structure to a martensitic structure at the ambient temperature when the transmission is loaded, and rotate around shafts 7, 8, and 9. do. axis 7,
8 and 9 are connected to the arm 10. Arm 1
0 is rotatable about axis 11. A ring roller 5 is arranged around the outer periphery of the planetary rollers 2, 3, and 4.
次に上述した本発明の変速機の作用を説明す
る。 Next, the operation of the transmission of the present invention described above will be explained.
遊星ローラ２，３，４を組込む時には、遊星ロ
ーラ２，３，４をオーステナイト変態点以下の温
度に保ちオーステナイト組織における体積の小さ
い状態にする。そして、太陽ローラ１とリングロ
ーラ５との間にすきまが生じた状態で全体を組立
てる。負荷運転時には、遊星ローラ２，３，４を
常温に保ちマルテンサイト組織に置き体積を膨脹
させた状態にし太陽ローラ１とリングローラ５と
の間に適正な接触圧力を発生させる。これが初期
予圧となる。一方、この変速機内は油で潤滑でき
るようにしておく。 When assembling the planetary rollers 2, 3, 4, the planetary rollers 2, 3, 4 are kept at a temperature below the austenite transformation point so that the austenite structure has a small volume. Then, the entire assembly is assembled with a gap created between the sun roller 1 and the ring roller 5. During load operation, the planetary rollers 2, 3, and 4 are kept at room temperature, placed in a martensite structure, and expanded in volume to generate appropriate contact pressure between the sun roller 1 and the ring roller 5. This becomes the initial preload. On the other hand, the inside of this transmission should be lubricated with oil.
この状態で入力軸６を回転駆動すれば、太陽ロ
ーラ１が回転し、これと圧接した遊星ローラ２，
３，４が接触摩擦力によつて回転駆動される。
又、同時に遊星ローラ２，３，４と圧接したリン
グローラ５も接触摩擦力によつて回転駆動されよ
うとする。本発明の変速機では、リングコーン５
が固定されているので、遊星ローラ２，３，４の
軸７，８，９等が軸１１を中心に回転する。この
場合、太陽ローラ１と遊星ローラ２，３，４及び
リングローラ５間の接触面には油膜が形成され
る。この油膜の剪断力に相当するトラクシヨン力
によつても入力軸６から出力軸１１に動力が伝達
される。 If the input shaft 6 is driven to rotate in this state, the sun roller 1 will rotate, and the planetary roller 2, which is in pressure contact with the sun roller 1, will rotate.
3 and 4 are rotationally driven by contact friction force.
At the same time, the ring roller 5 that is in pressure contact with the planetary rollers 2, 3, and 4 also tries to be driven to rotate by the contact friction force. In the transmission of the present invention, the ring cone 5
are fixed, the shafts 7, 8, 9, etc. of the planetary rollers 2, 3, 4 rotate about the shaft 11. In this case, an oil film is formed on the contact surfaces between the sun roller 1, the planetary rollers 2, 3, 4, and the ring roller 5. Power is also transmitted from the input shaft 6 to the output shaft 11 by the traction force corresponding to the shearing force of this oil film.
以上の構成によつて、次の効果が得られる。円
筒ローラ同志の組合せによる遊星式摩擦変速機に
おいて、ローラの組立時に各ローラに無理な変形
を与えることなく、しかも組立後はローラ同志の
接触面に動力伝達に必要な適正予圧を与えること
ができる。円筒ローラを使用できるためローラ同
志の接触面積を大きく取れるので接触面での伝達
動力を大きくすることができる。この他、運転開
始時の温度の時、オーステナイト組織となり、運
転開始時の温度上昇によつてマルテンサイト組織
となる特性をもつ形状記憶合金を用いることによ
つて、運転開始直後におけるローラ間に油膜が形
成されにくい時にはローラ間の予圧を小さく保
ち、運転開始時におけるローラ間の直接接触力を
小さくすることによつてローラ表面の傷付きを防
止することが可能となる。 The above configuration provides the following effects. In a planetary friction transmission that uses a combination of cylindrical rollers, it is possible to avoid unreasonable deformation of each roller when assembling the rollers, and to apply the appropriate preload necessary for power transmission to the contact surfaces of the rollers after assembly. . Since cylindrical rollers can be used, the contact area between the rollers can be increased, and the power transmitted at the contact surface can be increased. In addition, by using a shape memory alloy that has an austenitic structure at the temperature at the start of operation and a martensite structure as the temperature rises at the start of operation, an oil film is created between the rollers immediately after the start of operation. When it is difficult to form a roller, it is possible to prevent the roller surface from being damaged by keeping the preload between the rollers small and reducing the direct contact force between the rollers at the start of operation.
又、円筒ローラとしたため、加工工数が少なく
精度管理も容易である。 Furthermore, since the roller is a cylindrical roller, the number of processing steps is small and precision control is easy.
なお、上述の実施例においては、遊星ローラ自
体を形状記憶合金としたが、遊星ローラの外周に
形状記憶合金層を形成してもよいし、また太陽ロ
ーラ１およびリングローラ５の形状記憶合金を用
いることも可能である。 In the above embodiment, the planetary roller itself is made of a shape memory alloy, but a shape memory alloy layer may be formed on the outer periphery of the planetary roller, or the shape memory alloy of the sun roller 1 and the ring roller 5 may be made of a shape memory alloy. It is also possible to use
以上述べたように、本発明によれば、組立てが
簡単で、回転駆動に必要なローラ間の初期予圧を
容易に与えることができ、負荷容量が大きくでき
ると共に、温度が上昇しても、初期予圧が大きく
変化することがなく、信頼性の高い摩擦変速機を
提供することができる。又、各ローラは加工が容
易で寸法精度管理も行い易い等の利点がある。
As described above, according to the present invention, assembly is simple, the initial preload between the rollers required for rotational drive can be easily applied, the load capacity can be increased, and even if the temperature rises, the initial preload can be easily applied. It is possible to provide a highly reliable friction transmission without large changes in preload. Further, each roller has advantages such as easy machining and easy control of dimensional accuracy.
第１図は本発明の摩擦変速機の一実施例を示す
側面図、第２図は第１図の−線矢視図であ
る。
１……太陽ローラ、２，３，４……遊星ロー
ラ、５……リングローラ。
FIG. 1 is a side view showing an embodiment of a friction transmission according to the present invention, and FIG. 2 is a view taken along the - line in FIG. 1. 1... Sun roller, 2, 3, 4... Planetary roller, 5... Ring roller.
Claims (1)
えた遊星式摩擦変速機において、前記遊星ローラ
を、変速機の負荷雰囲気温度でオーステナイト組
織からマルテンサイト組織に変態することによつ
て形状が変化する形状記憶合金材料で構成したこ
とを特徴とする摩擦変速機。1. In a planetary friction transmission equipped with a sun roller, a planetary roller, and a ring roller, the planetary roller has shape memory that changes its shape by transforming from an austenite structure to a martensitic structure at the load ambient temperature of the transmission. A friction transmission characterized by being constructed from an alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11581783A JPS608559A (en) | 1983-06-29 | 1983-06-29 | Friction speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11581783A JPS608559A (en) | 1983-06-29 | 1983-06-29 | Friction speed changer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS608559A JPS608559A (en) | 1985-01-17 |
| JPH0429889B2 true JPH0429889B2 (en) | 1992-05-20 |
Family
ID=14671833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11581783A Granted JPS608559A (en) | 1983-06-29 | 1983-06-29 | Friction speed changer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS608559A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2685770B2 (en) * | 1987-12-28 | 1997-12-03 | 株式会社東芝 | Nonvolatile semiconductor memory device |
| DE3831538C2 (en) * | 1987-09-18 | 1996-03-28 | Toshiba Kawasaki Kk | Electrically erasable and programmable semiconductor memory device |
| JP2732601B2 (en) * | 1987-11-18 | 1998-03-30 | 株式会社東芝 | Nonvolatile semiconductor memory device |
| US5050125A (en) * | 1987-11-18 | 1991-09-17 | Kabushiki Kaisha Toshiba | Electrically erasable programmable read-only memory with NAND cellstructure |
| US4939690A (en) * | 1987-12-28 | 1990-07-03 | Kabushiki Kaisha Toshiba | Electrically erasable programmable read-only memory with NAND cell structure that suppresses memory cell threshold voltage variation |
| USRE35838E (en) * | 1987-12-28 | 1998-07-07 | Kabushiki Kaisha Toshiba | Electrically erasable programmable read-only memory with NAND cell structure |
| JP2718716B2 (en) * | 1988-09-30 | 1998-02-25 | 株式会社東芝 | Nonvolatile semiconductor memory device and data rewriting method thereof |
| KR910004166B1 (en) * | 1988-12-27 | 1991-06-22 | 삼성전자주식회사 | Eeprom having nand-cells |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54145775U (en) * | 1978-04-03 | 1979-10-09 |
-
1983
- 1983-06-29 JP JP11581783A patent/JPS608559A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS608559A (en) | 1985-01-17 |
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