JPS6237561A - Reduction gear - Google Patents
Reduction gearInfo
- Publication number
- JPS6237561A JPS6237561A JP17610885A JP17610885A JPS6237561A JP S6237561 A JPS6237561 A JP S6237561A JP 17610885 A JP17610885 A JP 17610885A JP 17610885 A JP17610885 A JP 17610885A JP S6237561 A JPS6237561 A JP S6237561A
- Authority
- JP
- Japan
- Prior art keywords
- outer ring
- planetary roller
- roller mechanism
- retainer
- differential
- 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
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 208000002991 Ring chromosome 4 syndrome Diseases 0.000 description 5
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Friction Gearing (AREA)
Abstract
Description
【発明の詳細な説明】
［技術分野］
本発明は、差！ｌｉＪ＋ｉｕ星ローラ機構を用いた減速
機に関する。[Detailed Description of the Invention] [Technical Field] The present invention is a difference! This invention relates to a reduction gear using a liJ+iu star roller mechanism.
［背景技術］
差動遊星ローラ機構を用いた減速機は、例えば特開昭５
８−１５２９６３に開示されるものが知られている。こ
の種の減速機は、入力軸（太陽軸）と遊星ローラ、遊星
ローラと外輪のそれぞれが円筒状部材の接触であるため
、減速比は固定化されたものとなる。また減速比につい
ては、遊星ローラの大径部と小径部の直径差を小さくし
ていくことにより、理論的には限り無く大きくできるも
のの、実際には接触部分のすべり等により効率が低下す
るので、直径差を小さくすること、つまり減速比の特大
化には限界がある。[Background technology] A speed reducer using a differential planetary roller mechanism is disclosed in, for example, Japanese Patent Application Laid-open No. 5
8-152963 is known. In this type of speed reducer, the input shaft (sun shaft) and the planetary roller, and the planetary roller and the outer ring are in contact with cylindrical members, so the reduction ratio is fixed. Regarding the reduction ratio, although theoretically it can be increased to an unlimited extent by reducing the difference in diameter between the large diameter part and the small diameter part of the planetary roller, in reality the efficiency decreases due to slippage of the contact parts, etc. There is a limit to reducing the diameter difference, that is, increasing the reduction ratio.
［発明の目的］
本発明は、上記事由に鑑みてなしたもので、その目的と
するところは、特大の減速比が得られ、しかも多種類の
減速比が得られる減速機を提供するにある。[Object of the Invention] The present invention has been made in view of the above reasons, and its purpose is to provide a speed reducer that can obtain an extra large reduction ratio and also provide a wide variety of reduction ratios. .
［発明の開示］
本発明の減速機は、太陽軸と、大径部と小径部を有しリ
テーナに支持されて太陽軸の外周面にころがり接触する
複数個の遊星ローラと、遊星ローラの小径部が内接する
第１の外輪と、Ｍ３￥ローラの大径部が内接しかつケー
シングに固定される第２の外輪とにより構成され、第１
の外輪又はリテーナを出力部材とする差動Ｍ星ローラ減
速機構を複数段配設し、前段の出力部材と後段の太陽軸
とを連結したことを特徴とする。[Disclosure of the Invention] The speed reducer of the present invention includes a sun shaft, a plurality of planetary rollers having a large diameter portion and a small diameter portion, supported by a retainer and rolling in contact with the outer peripheral surface of the sun shaft, and a plurality of planetary rollers having a small diameter a first outer ring in which the large diameter part of the M3 roller is inscribed, and a second outer ring in which the large diameter part of the M3 roller is inscribed and fixed to the casing;
The present invention is characterized in that a plurality of differential M star roller speed reduction mechanisms each having an outer ring or a retainer as an output member are arranged in multiple stages, and the output member in the front stage is connected to the sun shaft in the rear stage.
（実施例） 以下、本発明の一実施例を第１図に基づいて説明する。(Example) An embodiment of the present invention will be described below with reference to FIG.
１は減速機の人力軸となる太陽軸である。1 is the sun axis which is the human power axis of the reducer.
２は大径部２ａと小径部２ｂを同軸上に有する遊星ロー
ラで、複数個がリテーナ３にて回転可能に支持されてい
る。具体的には、遊星ローラ２の中心軸上に連設された
軸部２ｃをリテーナ３の軸孔３ａに挿通して支持される
もので、これにより複数個の遊星ローラ２は太陽軸１の
周囲に等間隔に配置され、しかも各大径部２ａが太陽軸
１の外周面にころがり接触するのである。2 is a planetary roller having a large diameter part 2a and a small diameter part 2b on the same axis, and a plurality of planetary rollers are rotatably supported by a retainer 3. Specifically, the shaft portion 2c, which is continuously arranged on the central axis of the planetary roller 2, is inserted into the shaft hole 3a of the retainer 3 and supported. They are arranged at equal intervals around the periphery, and each large diameter portion 2a rolls into contact with the outer peripheral surface of the solar axis 1.
４は遊星ローラ２の小径部２ｂが内接する第１の外輪で
ある。4 is a first outer ring in which the small diameter portion 2b of the planetary roller 2 is inscribed.
５は遊星ローラ２の大径部２ａが内接する（従って、内
径は第１の外輪４より大きい）第２の外輪で、その外周
部とケーシング６の内周部に設けたスプライン１に凹凸
部の嵌合のような形でもってケーシング６に固定される
ものである。そしてこれら外輪４．５は、遊星ローラ２
の小大径部２ｂ、２ａに対し所要の圧接力を得るために
焼きばめられる。なお、本発明の要部でない太陽軸の軸
受等は省略しである。Reference numeral 5 denotes a second outer ring in which the large diameter portion 2a of the planetary roller 2 is inscribed (therefore, the inner diameter is larger than the first outer ring 4), and the spline 1 provided on the outer circumference and the inner circumference of the casing 6 has uneven parts. It is fixed to the casing 6 in a manner similar to the fitting shown in FIG. These outer rings 4.5 are connected to the planetary rollers 2
It is shrink-fitted to the small and large diameter portions 2b and 2a to obtain the required pressure contact force. Note that the sun shaft bearing and the like, which are not essential parts of the present invention, are omitted.
上記各部材、すなわち太陽軸１．遊星ローラ２、リテー
ナ３．第１の外輪４．第２の外輪５及びケーシング６に
より所定の減速比が得られる１（囚の差動遊星ローラ機
構Ａが構成され、リテーナ３又は第１の外輪４が１個の
差動遊星ローラ機構Ａの出力部材となる。従って、リテ
ーナ３及び第１の外輪４は、減速出力の伝達のため、そ
れぞれの外周部にスプライン状の突起のような連結部３
ｂ、４ｂが設けられる。Each of the above members, namely the solar axis 1. Planetary roller 2, retainer 3. First outer ring4. A predetermined reduction ratio is obtained by the second outer ring 5 and the casing 6. Therefore, the retainer 3 and the first outer ring 4 have a connecting portion 3 such as a spline-shaped projection on their respective outer peripheries in order to transmit deceleration output.
b, 4b are provided.
Ｂは差動遊星ローラ典構人と略同−の部材で構成された
別の差動遊星ローラ機構で、同一部材には数字１０を足
した符号を付しである。ここで重要な点は、差勅遊犀ロ
ーラ機構Ａの出力部材である第１の外輪４と、差動遊犀
ローラ機構Ｂの入力軸である太陽軸１１とが連結されて
いることである。すなわち太陽軸１１は、ローラ機構Ａ
側（前段側）に第１の外輪４の連結部４ｂの外径に略等
しい外径の円筒部１１ａを連設し、さらにその端部に連
結部４ｂと着脱自在に嵌合し得る連結部１１ｂが設けら
れている。従って、前段の減速機としてのローラ機構Ａ
により所定の減速比を得、その減速出力が入力される後
段の減速機としてのローラ機構Ｂによりさらに所定の減
速比を得ることができる。Reference numeral B designates another differential planetary roller mechanism composed of substantially the same members as the differential planetary roller mechanism, and the same members are given a reference numeral with a numeral 10 added thereto. The important point here is that the first outer ring 4, which is the output member of the differential roller mechanism A, and the sun shaft 11, which is the input shaft of the differential roller mechanism B, are connected. . That is, the sun axis 11 is a roller mechanism A.
A cylindrical portion 11a having an outer diameter approximately equal to the outer diameter of the connecting portion 4b of the first outer ring 4 is continuously provided on the side (previous stage side), and a connecting portion that can be detachably fitted to the connecting portion 4b at the end thereof. 11b is provided. Therefore, the roller mechanism A as the front speed reducer
A predetermined reduction ratio can be obtained by this, and a further predetermined reduction ratio can be obtained by the roller mechanism B serving as a subsequent reduction gear to which the reduction output is input.
第２図は、差動遊星ローラ機構Ａのリテーナ３とこれと
略同−の部材で構成された差動遊星ローラ機構Ｃの太陽
軸２１とを連結した例で、同一部材には数字２０を足し
た符号を付しである。この太陽軸２１は、リテーナ３に
応じた円筒部２１ａを連設し、その端部に連結部３ｂと
着脱自在に嵌合し得る連結部２１ｂが設けられており、
上記したものと同様に所定の減速比が得られる。Fig. 2 shows an example in which the retainer 3 of the differential planetary roller mechanism A is connected to the sun shaft 21 of the differential planetary roller mechanism C, which is made up of substantially the same members. The added sign is attached. This sun shaft 21 has a cylindrical portion 21a that corresponds to the retainer 3, and a connecting portion 21b that can be removably fitted to the connecting portion 3b is provided at the end of the cylindrical portion 21a.
A predetermined reduction ratio is obtained in the same manner as described above.
本発明の減速機は、上記の差動遊星ローラ機構Ａ、Ｂ、
Ｃを通貨の組合せで複数段配設し、前段の出力部材（リ
テーナ又は第１の外輪）と後段の入力軸（太陽軸）とを
連結するものである。The speed reducer of the present invention includes the differential planetary roller mechanisms A, B,
A plurality of Cs are arranged in a combination of currencies, and the output member (retainer or first outer ring) in the former stage is connected to the input shaft (solar shaft) in the latter stage.
かかる減速機にあっては、各差動遊星ローラ機構は太陽
軸と遊星ローラ間、遊星ローラと両性輪間にいずれも所
要の圧接力が付与されており、しかも外輪の一方はケー
シングに固定されているので、外輪の他方あるいはリテ
ーナより減速出力が取り出せ、これら差動遊星ローラ機
構を複数段配設することで、特大の減速比と多種類の減
速比が得られる。In such a speed reducer, each differential planetary roller mechanism applies the required pressure between the sun shaft and the planetary rollers, and between the planetary rollers and both rings, and one of the outer rings is fixed to the casing. Therefore, the deceleration output can be taken out from the other side of the outer ring or the retainer, and by arranging these differential planetary roller mechanisms in multiple stages, an extra large reduction ratio and a wide variety of reduction ratios can be obtained.
ここで得られる減速比は、次の如くなる。The reduction ratio obtained here is as follows.
■ 各差動遊星ローラ機構の減速比
（ａ） 外輪を出力部材とした場合
Ｄｉ （Ｄ２−Ｄ２°）
Ｍａ＝ −一一一−−−−−−−−−−−−−−−一
一一一２Ｄ２ （Ｄ１＋Ｄ２＋Ｄ２”）
（ｂ） リテーナを出力部材とした場合２ （Ｄ
Ｉ＋Ｄ２）
Ｍ ｂ ＝ −一一一一一一一一一一一ただし、Ｄｌ
：太陽軸外径
Ｄ２：遊星ローラの大径部外径
Ｄ２゛ ：遊犀ローラの小径部外径
■ 減速機全体の減速比
Ｍ−（Ｍａ〆・ （Ｍｂ）”
ただし、Ｘ：外輪の出力回数
ｙ：リテーナの出力回数
なお、前段の出力部材と後段の入力軸との連結手段ある
いは第２の外輪とケーシングの固定手段は、ねじ結合や
キー結合等の適宜の手段に変更してもよい。■ Reduction ratio of each differential planetary roller mechanism (a) When the outer ring is used as an output member Di (D2-D2°) Ma= -111--------------11 112D2 (D1+D2+D2”) (b) When the retainer is used as an output member 2 (D
I+D2) M b = -1111111111 However, Dl
: Sun shaft outside diameter D2: Outside diameter of the large diameter part of the planetary roller D2゛ : Outside diameter of the small diameter part of the planetary roller■ Reduction ratio of the entire reducer M-(Ma〆・(Mb)", where X: Output of the outer ring Number of times y: Number of outputs of the retainer Note that the means for connecting the output member at the front stage and the input shaft at the rear stage or the means for fixing the second outer ring and the casing may be changed to an appropriate means such as screw connection or key connection. .
［発明の効果］
本発明の減速機は、上記の如く構成したから、所定の減
速比を持つ差動遊犀ローラ機構を多段に連結できるので
、特大の減速比が得られ、しかも各差動＆星ローラ機構
の出力はリテーナ又は外輪のいずれかを選択して取り出
せるので、多種類の減速比が得られるものとなる。[Effects of the Invention] Since the reducer of the present invention is constructed as described above, differential idler roller mechanisms having a predetermined reduction ratio can be connected in multiple stages, so an extra large reduction ratio can be obtained, and each differential The output of the & star roller mechanism can be taken out by selecting either the retainer or the outer ring, so a wide variety of reduction ratios can be obtained.
第１図は、本発明の一実施例を示す断面図、第２図は、
本発明の他の実施例を示す断面図。
１．１１．２１−太陽軸、２．１２．２２−遊星ローラ
、３，１３．２３ −リテーナ、 ４゜１４．２４・
・第１の外輪、５．１５．２５−第２の外輪、６−ケー
シング、Ａ、Ｂ、Ｃ−差動Ｍ星ローラ機構。
特許出願人 松下電工株式会社
代理人弁理士 竹光 散光
（ほか２名）
＋FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG. 2 is a sectional view showing an embodiment of the present invention.
FIG. 3 is a sectional view showing another embodiment of the present invention. 1.11.21 - Sun axis, 2.12.22 - Planetary roller, 3, 13.23 - Retainer, 4° 14.24.
- First outer ring, 5.15.25 - Second outer ring, 6 - Casing, A, B, C - Differential M star roller mechanism. Patent applicant: Matsushita Electric Works Co., Ltd. Representative patent attorney: Takemitsu Sanko (and 2 others) +
Claims (1)
されて前記太陽軸の外周面にころがり接触する複数個の
遊星ローラと、前記遊星ローラの小径部が内接する第１
の外輪と、前記遊星ローラの大径部が内接しかつケーシ
ングに固定される第２の外輪とにより構成され、前記第
１の外輪又はリテーナを出力部材とする差動遊星ローラ
減速機構を複数段配設し、前段の出力部材と後段の太陽
軸とを連結したことを特徴とする減速機。(1) A sun shaft, a plurality of planetary rollers having a large diameter part and a small diameter part, supported by a retainer and rolling into contact with the outer peripheral surface of the sun shaft, and a first planetary roller in which the small diameter part of the planetary roller is inscribed.
and a second outer ring in which the large-diameter portion of the planetary roller is inscribed and fixed to the casing, and a differential planetary roller speed reduction mechanism with the first outer ring or the retainer as an output member is provided in multiple stages. A speed reducer characterized in that the output member of the front stage and the sun shaft of the rear stage are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17610885A JPS6237561A (en) | 1985-08-09 | 1985-08-09 | Reduction gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17610885A JPS6237561A (en) | 1985-08-09 | 1985-08-09 | Reduction gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6237561A true JPS6237561A (en) | 1987-02-18 |
Family
ID=16007828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17610885A Pending JPS6237561A (en) | 1985-08-09 | 1985-08-09 | Reduction gear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6237561A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017199941A1 (en) * | 2016-05-16 | 2017-11-23 | 日本電産シンポ株式会社 | Traction speed reducer and electric motor–equipped speed reducer |
| JP2017207193A (en) * | 2016-05-16 | 2017-11-24 | 日本電産シンポ株式会社 | Traction speed reducer and speed reducer with electric motor |
-
1985
- 1985-08-09 JP JP17610885A patent/JPS6237561A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017199941A1 (en) * | 2016-05-16 | 2017-11-23 | 日本電産シンポ株式会社 | Traction speed reducer and electric motor–equipped speed reducer |
| JP2017207193A (en) * | 2016-05-16 | 2017-11-24 | 日本電産シンポ株式会社 | Traction speed reducer and speed reducer with electric motor |
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