JPS6323643Y2 - - Google Patents

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Publication number
JPS6323643Y2
JPS6323643Y2 JP6419881U JP6419881U JPS6323643Y2 JP S6323643 Y2 JPS6323643 Y2 JP S6323643Y2 JP 6419881 U JP6419881 U JP 6419881U JP 6419881 U JP6419881 U JP 6419881U JP S6323643 Y2 JPS6323643 Y2 JP S6323643Y2
Authority
JP
Japan
Prior art keywords
outer ring
circumferential
roller
ring
planetary
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
Application number
JP6419881U
Other languages
Japanese (ja)
Other versions
JPS57175848U (en
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 filed Critical
Priority to JP6419881U priority Critical patent/JPS6323643Y2/ja
Publication of JPS57175848U publication Critical patent/JPS57175848U/ja
Application granted granted Critical
Publication of JPS6323643Y2 publication Critical patent/JPS6323643Y2/ja
Expired legal-status Critical Current

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  • Friction Gearing (AREA)

Description

【考案の詳細な説明】 本考案は、外輪が、内部で円周空洞部を形成で
きかつ側部で溶着される内リング、外リングを用
いて形成することにより、製作が容易であつてし
かも耐久性・トルク伝達性能に優れた遊星式摩擦
ローラ装置に関する。
[Detailed description of the invention] The present invention is easy to manufacture because the outer ring is formed using an inner ring and an outer ring that can form a circumferential cavity inside and are welded at the sides. This article relates to a planetary friction roller device with excellent durability and torque transmission performance.

近年、歯車を用いた遊星式の増減速機にかえ
て、ローラ間の摩擦によつて動力を伝達しうるよ
うにした摩擦ローラ装置が増減速装置として採用
されつつあるが、このような装置においては、摩
擦ローラ間のすべりおよびすべりに伴なう焼きつ
き、損傷等を防止しつつ所望のトルクを伝達しう
るよう、摩擦ローラ間には最適な押付け力を作用
させローラ間を弾性的に接触せしめることが必要
となる。この目的のために例えば第2図に示すよ
うに、外輪aを断面略U字状に形成しその側壁を
ネジbを用いて狭成することにより外輪aを内径
側に膨出させる装置又は外輪を、対向する楔リン
グ内に取付け該楔リングを近接させることによつ
て内径を縮小するようにした装置等機械的係合に
より外輪を変形させるものがあるが、これらは外
輪の押圧が不均一となり局部的に過大な圧力を生
じ摺接面を損じやすく、又調圧性能に劣るという
欠点がある。かかる問題の一端を解決するものと
して例えば第3図に示すように、外輪aに圧力供
給手段cに連通する圧力室dを設けた装置が特開
昭56−10853号公報によつて提案されているが、
このものは圧力室を慨念的に開示しているとはい
え具体的構造についての記載はなく、その開示内
容のみでは該装置の実施が不可能であり、完成さ
れた発明とはみなし難い。
In recent years, friction roller devices that can transmit power through friction between rollers are being adopted as speed-up/deceleration devices instead of planetary speed-up/deceleration devices using gears. In order to transmit the desired torque while preventing slippage between the friction rollers and seizures and damage caused by the slippage, the rollers are brought into elastic contact by applying an optimal pressing force between them. It is necessary to force it. For this purpose, for example, as shown in FIG. 2, there is a device or an outer ring that bulges the outer ring a toward the inner diameter side by forming the outer ring a into a substantially U-shaped cross section and narrowing its side wall using a screw b. There are devices that deform the outer ring by mechanical engagement, such as devices that reduce the inner diameter by attaching the inner ring to the wedge ring that faces each other and bringing the wedge rings closer together. This has the disadvantage that excessive pressure is generated locally, easily damaging the sliding surface, and that the pressure regulating performance is poor. To solve one part of this problem, for example, as shown in FIG. 3, a device in which an outer ring a is provided with a pressure chamber d communicating with a pressure supply means c was proposed in Japanese Patent Application Laid-Open No. 10853/1983. There are, but
Although this patent discloses a pressure chamber in thought, there is no description of a specific structure, and it is impossible to implement the device based solely on the content of the disclosure, and it is difficult to regard this as a completed invention.

本考案は外輪が互いに溶着される内リングと外
リングとからなり、容易に生産できかつ最適な押
圧力を付与しうる実用可能な遊星式摩擦ローラ装
置の提供を目的とし、以下その一実施例を図面に
より説明する。
The purpose of the present invention is to provide a practical planetary friction roller device which is composed of an inner ring and an outer ring whose outer rings are welded to each other, and which can be easily produced and can provide an optimum pressing force. will be explained using drawings.

図は本考案の装置が両軸型の減速装置として採
用されたその一実施例を示し、図において装置1
は、出力軸2に軸支しかつ脚を設けた前ハウジン
グ3に、リング状の中ハウジング4を介して後ハ
ウジング5を取付けハウジングCを形成するとと
もに、該後ハウジング5によつて前記出力軸2と
同軸に配設される入力軸7の一端を枢支してい
る。なお該入力軸7の他端は出力軸2で軸着され
る。入力軸7は円柱状の太陽ローラ10を同芯に
膨設している。又前記中ハウジング4には外輪1
1が太陽ローラ10と同芯に嵌設され、太陽ロー
ラ10と外輪11との間には、前記出力軸9の後
端で突出するキヤリヤ12から突出しかつ太陽ロ
ーラ10と平行な複数本の支持軸13に枢着さ
せ、遊星ローラ14を間挿している。なお本実施
例では、太陽ローラ10と、遊星ローラ14とは
同巾寸度に設定され、又外輪11はそれらに比し
て広巾に形成される。
The figure shows an embodiment in which the device of the present invention is adopted as a double-shaft type speed reducer.
A rear housing 5 is attached to a front housing 3 which is pivotally supported on the output shaft 2 and provided with legs via a ring-shaped middle housing 4 to form a housing C, and the rear housing 5 supports the output shaft. One end of an input shaft 7 disposed coaxially with the input shaft 2 is pivotally supported. Note that the other end of the input shaft 7 is attached to the output shaft 2. The input shaft 7 has a cylindrical sun roller 10 extending concentrically therebetween. Further, the inner housing 4 has an outer ring 1.
1 is fitted concentrically with the sun roller 10 , and between the sun roller 10 and the outer ring 11 are provided a plurality of supports that protrude from a carrier 12 that protrudes from the rear end of the output shaft 9 and are parallel to the sun roller 10 . It is pivotally mounted on a shaft 13, and a planetary roller 14 is inserted therebetween. In this embodiment, the sun roller 10 and the planetary roller 14 are set to have the same width, and the outer ring 11 is formed to be wider than them.

外輪11は、内リング15と、該内リング15
に外嵌しうる外リング16とからなり、内リング
15と外リング16とはともに同巾寸度にしかも
遊星ローラ14の横巾をこえる長さに設定され
る。本実施例においては、内リング15、外リン
グ16の向き合う面に円周方向にのびかつ遊星ロ
ーラ14の巾寸度をこえる巾寸度の円周溝17,
19を形成するとともに、両側の当接部20を、
例えば電子ビーム等を用いて油密を溶着すること
により、円周溝17,19は協働して円周空洞部
21を形成する。なお前記円周溝17はその両端
をやや深く円弧で切り込み底面を湾曲させること
によつて、内リング15の円周溝17と遊星ロー
ラ14が弾接する内周面との間に介在する変形部
分22はその両端部が主として変形し、中央部は
略平担に維持しうるため、遊星ローラ14を均一
に押圧しうる。さらに前記外リング16の一側部
には外フランジ23が形成され該外フランジ23
によつて中ハウジング4にボルト止めされるとと
もに、外フランジ23には、前記円周空洞部21
に通じる導孔24を穿設する。該導孔24は外フ
ランジ23の側面に設けられるネジ孔からなる接
続部25に連通する。なお本実施例においては、
該接続部25には円周空洞部21への流れを自由
とするチエツク弁26を取付け、又前ハウジング
3には該チエツク弁26に臨みうる透孔29をプ
ラグ30により封止するとともに、外リング16
には、その反対側にプラグ31により閉栓される
油抜き孔32を上端位置に設ける。なお該プラグ
31は、後ハウジング5に設けられかつボルト3
3により封止されるのぞき穴34から螺入でき
る。又前記チエツク弁26には透孔29を通り液
圧発生装置を連結しうる。
The outer ring 11 includes an inner ring 15 and an inner ring 15.
The inner ring 15 and the outer ring 16 are both set to have the same width and a length exceeding the width of the planetary roller 14. In this embodiment, a circumferential groove 17 extending in the circumferential direction on the facing surfaces of the inner ring 15 and the outer ring 16 and having a width exceeding the width of the planetary roller 14,
19, and the abutting portions 20 on both sides,
For example, by welding an oiltight seal using an electron beam or the like, the circumferential grooves 17 and 19 cooperate to form the circumferential cavity 21. The circumferential groove 17 has both ends cut into a slightly deep arc and its bottom surface curved to create a deformed portion interposed between the circumferential groove 17 of the inner ring 15 and the inner circumferential surface on which the planetary rollers 14 come into elastic contact. 22 is mainly deformed at both ends thereof, and the center portion can be kept substantially flat, so that the planetary roller 14 can be pressed uniformly. Further, an outer flange 23 is formed on one side of the outer ring 16.
The outer flange 23 is bolted to the inner housing 4 by means of the circumferential cavity 21.
A guide hole 24 leading to the hole 24 is bored. The guide hole 24 communicates with a connecting portion 25 consisting of a screw hole provided on the side surface of the outer flange 23. In this example,
A check valve 26 is attached to the connecting portion 25 to allow free flow to the circumferential cavity 21, and a through hole 29 in the front housing 3 that can face the check valve 26 is sealed with a plug 30, and an external ring 16
An oil drain hole 32, which is closed by a plug 31, is provided at the upper end on the opposite side. Note that the plug 31 is provided in the rear housing 5 and is connected to the bolt 3.
It can be screwed in through the peephole 34 sealed by 3. Further, a hydraulic pressure generating device can be connected to the check valve 26 through a through hole 29.

然して本考案の装置において、入力軸7を回転
することにより、外輪11との間で転動する遊星
ローラ14によつて周知の速比によつて出力軸2
を減速、回転させうるとともに前記のごとくプラ
グ30を外し、図示しない液体供給装置を接続部
25のチエツク弁26に連結し、円周空洞部21
内に、導孔24を通り液体を充填しかつ液体を加
圧する。前記内リング15の変形部分22は液圧
によつて、内径方向に膨出し、遊星ローラ14と
の間で適当な弾接力を付与しうる。なお該弾接力
は遊星ローラ14と支持軸13との間に遊びによ
つて太陽ローラ10と遊星ローラ14との間にも
同様な圧接力を付与することにより、太陽ローラ
10、外輪11、遊星ローラ14との間に適宜の
押圧力をさせ従つてその間の摩擦係数と押圧力と
の積による摩擦力に応じたトルクを伝達しうる。
なお所定の液圧を付与したのち液圧供給装置を取
外す。その際液圧はチエツク弁26によつて保持
できる。さらに前記変形部分22の両端部はやや
薄肉に形成されており、従つて変形部分22の中
央は平担部分を維持しつつ変位することによつ
て、遊星ローラ14との間で均一な押圧力を付与
できしかも外輪の巾寸度は遊星ローラ14の巾寸
度に比べて大に形成しているため、均等な押圧力
の発生を容易とする。
However, in the device of the present invention, by rotating the input shaft 7, the output shaft 2 is rotated at a known speed ratio by the planetary roller 14 rolling between it and the outer ring 11.
The plug 30 is removed as described above, a liquid supply device (not shown) is connected to the check valve 26 of the connecting portion 25, and the circumferential cavity 21 is
A liquid is filled into the inside through the introduction hole 24 and the liquid is pressurized. The deformed portion 22 of the inner ring 15 expands in the inner diameter direction due to hydraulic pressure, and can apply an appropriate elastic contact force with the planetary roller 14. The elastic contact force is generated by applying a similar pressure contact force between the sun roller 10 and the planet roller 14 due to the play between the planet roller 14 and the support shaft 13. An appropriate pressing force can be applied between the roller 14 and a torque corresponding to the frictional force obtained by multiplying the friction coefficient and the pressing force between the rollers 14 and 14.
Note that after applying a predetermined hydraulic pressure, the hydraulic pressure supply device is removed. In this case, the hydraulic pressure can be maintained by a check valve 26. Furthermore, both ends of the deformed portion 22 are formed to be slightly thin, and the center of the deformed portion 22 is displaced while maintaining a flat portion, thereby creating a uniform pressing force between it and the planetary roller 14. Moreover, since the width of the outer ring is larger than that of the planetary roller 14, it is easy to generate an even pressing force.

叙上のごとく本考案の装置は、外輪が、互いに
溶着される内リングと外リングとにより液体を充
填、加圧する円周空洞部を形成しかつ内リングの
変形部分は、その両端部が薄肉に形成されている
ものであるため、外輪と遊星ローラさらには太陽
ローラとの間に均一な弾接力を発生しうるよう外
輪の摺接面を容易かつ平坦に変形でき、外輪等の
材質、摩耗、疲労強度に応じて夫々予じめ押付け
力を最適に調節でき、その結果すべりによる焼付
又摺接面の摩損を防止しえ、耐久性に優れかつ長
期にわたり使用可能な、所要のトルクを伝達しう
る装置となる。さらに液圧によつて弾接力を付与
するものであるため、運転等により温度が上昇
し、熱膨張が生じた際にも従来の機械的係合によ
る調圧装置を具える装置に比してその過度の極部
的圧力の発生も有効に阻止しうる。
As described above, in the device of the present invention, the outer ring forms a circumferential cavity filled with liquid and pressurized by an inner ring and an outer ring that are welded to each other, and the deformed portion of the inner ring has thin walls at both ends. Because the outer ring is formed with , the pressing force can be optimally adjusted in advance according to the fatigue strength, and as a result, it is possible to prevent seizing due to slippage and wear of the sliding contact surface, and transmits the required torque with excellent durability and long-term use. It becomes a capable device. Furthermore, since the elastic contact force is applied using liquid pressure, it can be used even when the temperature rises due to operation etc. and thermal expansion occurs, compared to devices equipped with a pressure regulating device using conventional mechanical engagement. The generation of excessive local pressure can also be effectively prevented.

又本考案の装置は、前記のごとく内リングと外
リングとを溶着するものであるため、円周空洞部
を容易に形成できかつ構造が簡易となり又組立て
調整等も容易になしえて実用に供しうる装置を提
供しうる。なお本考案の装置において、前記チエ
ツク弁にかえて液圧供給装置を常時連結せしめて
おくことができ、そのとき円周空洞部の液圧を例
えば負に維持することにより外輪と遊星ローラと
の係合を開放しクラツチ機構を持たせるととも
に、伝達されるトルクに応じて液圧をかえ、常に
必要最小限度の弾接力を付与するように形成し摺
接部分の摩擦損失等を効率よく減じかつ外輪等の
耐久性を高めうるようにも構成しうる。
Furthermore, since the device of the present invention welds the inner ring and the outer ring as described above, the circumferential cavity can be easily formed, the structure is simple, and assembly and adjustment can be easily performed, making it suitable for practical use. It is possible to provide a device for In the device of the present invention, a hydraulic pressure supply device can be connected at all times instead of the check valve, and in this case, by maintaining the hydraulic pressure in the circumferential cavity, for example, negative, the connection between the outer ring and the planetary roller can be maintained. In addition to having a clutch mechanism that releases the engagement, the hydraulic pressure is changed according to the torque being transmitted, and it is designed to always apply the minimum necessary elastic contact force, effectively reducing friction loss in sliding parts. It can also be configured to increase the durability of the outer ring and the like.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本考案の一実施例を示す断面図、第2
〜3図は従来の構造を示す断面図である。 10……太陽ローラ、11……外輪、14……
遊星ローラ、15……内リング、16……外リン
グ、17,19……円周溝、21……円周空洞
部、22……変形部分、25……接続部、C……
ハウジング。
Fig. 1 is a sectional view showing one embodiment of the present invention;
Figures 1 to 3 are cross-sectional views showing conventional structures. 10...Sun roller, 11...Outer ring, 14...
Planetary roller, 15... Inner ring, 16... Outer ring, 17, 19... Circumferential groove, 21... Circumferential cavity, 22... Deformed portion, 25... Connection portion, C...
housing.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 太陽ローラと、該太陽ローラと同芯に配される
外輪と、前記太陽ローラと外輪との間でかつ両者
に弾接して転動する遊星ローラとを具えるととも
に、前記外輪は両側を一体に溶着される外リン
グ、内リングを用いて形成されかつ前記外リン
グ、内リングには、その向き合う面に円周方向に
のび互に嵌り合うことにより円周空洞部を形成し
うる円周溝をそれぞれ設ける一方、外輪をハウジ
ングに嵌着、ボルト止めすることにより取付け、
かつ前記円周空洞部を、液圧発生装置と連結でき
かつハウジング内に設ける接続部に連通せしめる
とともに、内リングは、遊星ローラが弾設する内
周面と、前記円周溝との間を、両端部が薄肉に形
成され前記円周空洞部の加圧に際して前記内周面
の中央部を略平坦に維持させうる変形部分を用い
て形成したことを特徴とする遊星式摩擦ローラ装
置。
A sun roller, an outer ring disposed concentrically with the sun roller, and a planetary roller that rolls between the sun roller and the outer ring and in elastic contact with both, and the outer ring has both sides integrally formed. The outer ring and the inner ring are formed using an outer ring and an inner ring to be welded, and the outer ring and the inner ring have circumferential grooves on their opposing surfaces that extend in the circumferential direction and can form a circumferential cavity by fitting into each other. The outer ring can be installed by fitting the outer ring into the housing and securing it with bolts.
The circumferential hollow portion is connected to a connecting portion provided in the housing and is connectable to a hydraulic pressure generating device, and the inner ring has a connection portion between the inner circumferential surface on which the planetary roller is elastically installed and the circumferential groove. 2. A planetary friction roller device, characterized in that both ends are formed using deformable portions that are thin and capable of maintaining a central portion of the inner circumferential surface substantially flat when pressurizing the circumferential hollow portion.
JP6419881U 1981-04-30 1981-04-30 Expired JPS6323643Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6419881U JPS6323643Y2 (en) 1981-04-30 1981-04-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6419881U JPS6323643Y2 (en) 1981-04-30 1981-04-30

Publications (2)

Publication Number Publication Date
JPS57175848U JPS57175848U (en) 1982-11-06
JPS6323643Y2 true JPS6323643Y2 (en) 1988-06-29

Family

ID=29860280

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6419881U Expired JPS6323643Y2 (en) 1981-04-30 1981-04-30

Country Status (1)

Country Link
JP (1) JPS6323643Y2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5246311B2 (en) * 2006-03-24 2013-07-24 株式会社豊田中央研究所 Power transmission device
JP6713363B2 (en) * 2016-07-15 2020-06-24 日本電産シンポ株式会社 transmission

Also Published As

Publication number Publication date
JPS57175848U (en) 1982-11-06

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