JPH0450538A - Multistep planetary gear transmission - Google Patents
Multistep planetary gear transmissionInfo
- Publication number
- JPH0450538A JPH0450538A JP15540590A JP15540590A JPH0450538A JP H0450538 A JPH0450538 A JP H0450538A JP 15540590 A JP15540590 A JP 15540590A JP 15540590 A JP15540590 A JP 15540590A JP H0450538 A JPH0450538 A JP H0450538A
- Authority
- JP
- Japan
- Prior art keywords
- planetary
- ring
- gear
- carrier
- bearing
- 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
- 230000005540 biological transmission Effects 0.000 title claims description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 description 4
- 208000032827 Ring chromosome 9 syndrome Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Retarders (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は複数組の遊星機構を軸方向に多段に連結した遊
星型変速装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a planetary transmission in which a plurality of sets of planetary mechanisms are connected in multiple stages in the axial direction.
［従来技術］
従来、非常に大きな減速比を得るための変速装置として
、遊星機構を軸方向に多段に連結するようにした多段遊
星型変速装置がある。[Prior Art] Conventionally, as a transmission for obtaining a very large reduction ratio, there is a multi-stage planetary transmission in which a planetary mechanism is connected in multiple stages in the axial direction.
第３図は、このような従来の多段遊星型変速装置の一例
である。１がその多段遊星型変速装置であって、入力側
に連結した原動機２の動力を高減速比で減速して出力側
のカップリング３に出力するようになっている。図の多
段遊星型変速装置は２組の遊星機構１． Ｉ［を連結
し、それぞれの遊星機構Ｉ、■が太陽歯車４．遊星歯車
５．内歯車６から構成されている。FIG. 3 shows an example of such a conventional multi-stage planetary transmission. Reference numeral 1 denotes the multi-stage planetary transmission, which reduces the power of a prime mover 2 connected to the input side at a high reduction ratio and outputs it to a coupling 3 on the output side. The multi-stage planetary transmission shown in the figure has two sets of planetary mechanisms 1. I[ are connected, and each planetary mechanism I, ■ is a sun gear 4. Planetary gear5. It is composed of an internal gear 6.
これら遊星機ｔａ１． Ｉ［における遊星歯車５は、
遊星軸７に回転自在に支持されているため、この遊星軸
７からの抜け止めとして遊星軸７上にクリップ１０など
の抜け止め機構が取り付けられている。さらに、遊星歯
車５がベアリング８と共に遊動リング９を内在させた構
成からなる構造の場合には、これらベアリング８や遊動
リング９の抜け止め用としての係止板１１も設けなけれ
ばならなくなる。しかし、これら抜け止め機構としての
クリップ１０や係止板１１は、これらを装着するための
スペースを必要とし、軸方向の長さを太き（する結果に
なっている。These planetary aircraft ta1. The planetary gear 5 at I[ is
Since it is rotatably supported by the planetary shaft 7, a retaining mechanism such as a clip 10 is attached to the planetary shaft 7 to prevent it from coming off from the planetary shaft 7. Furthermore, in the case where the planetary gear 5 has a structure in which the floating ring 9 is included together with the bearing 8, a locking plate 11 for preventing the bearing 8 and the floating ring 9 from coming off must also be provided. However, the clip 10 and the locking plate 11 serving as the retaining mechanism require a space for mounting them, resulting in an increased length in the axial direction.
このため、従来の多段遊星型変速装置では、遊星機構の
段数が増えるほど軸方向の全長が長くなり、装置が非常
に大型化することが避けられなかった。For this reason, in conventional multi-stage planetary transmissions, as the number of stages in the planetary mechanism increases, the overall length in the axial direction becomes longer, and the device inevitably becomes very large.
このような変速装置の大型化は、特に産業用ロボットの
ように狭い空間を移動しながら作業する機器に使用する
場合に大きな障害になっていた。The increase in the size of such transmission devices has been a major obstacle, especially when used in equipment that moves and works in narrow spaces, such as industrial robots.
本発明の目的は、軸方向の全長を大幅に短縮すると共に
、加工工数の低減と軽量化とを可能にした多段遊星型変
速装置を提供することにある。An object of the present invention is to provide a multi-stage planetary transmission that can significantly shorten the overall length in the axial direction, reduce the number of machining steps, and reduce the weight.
上記目的を達成する本発明による多段遊星型変速装置は
、太陽輪と遊星輪と内輪とを一組とする遊星機構を軸方
向に複数組連結した多段遊星型変速装置において、互い
に隣接する一方の遊星機構の遊星軸を支持するキャリヤ
を、自己の遊星輪に接触させると同時に、他方の遊星機
構の遊星輪にも接触させ、該キャリヤを遊星輪の抜け止
め機構に兼用して複数組の遊星機構を重合連結したこと
を特徴とするものである。A multi-stage planetary transmission according to the present invention that achieves the above object is a multi-stage planetary transmission in which a plurality of sets of planetary mechanisms each including a sun ring, a planet ring, and an inner ring are connected in the axial direction. A carrier that supports the planetary shaft of a planetary mechanism is brought into contact with its own planetary wheel, and at the same time, is also brought into contact with the planetary wheel of the other planetary mechanism, and the carrier is also used as a mechanism to prevent the planetary wheels from coming off, and multiple sets of planets are It is characterized by the mechanism being polymerized and connected.
このようにキャリヤが遊星輪の抜け止め機構を兼用して
、遊星機構相互が互いに密着するように連結するため、
軸方向の全長が著しくコンパクトに短縮される。また、
従来装置に使用されていたクリップや係止板などの抜け
止め機構が省略されるため全長が短縮されたことと相俟
って著しく軽量化され、しかもこれらの加工工数も無く
すことができる。In this way, the carrier also serves as a mechanism to prevent the planetary wheels from coming off, and connects the planetary mechanisms so that they are in close contact with each other.
The overall length in the axial direction is significantly reduced in size. Also,
Since the retaining mechanisms such as clips and locking plates used in conventional devices are omitted, the total length is shortened and the weight is significantly reduced, and the number of man-hours required for machining these devices can also be eliminated.
なお、本発明において太陽輪、遊星輪、内輪とは、それ
ぞれが歯車から構成される場合のほか、ローラから構成
される場合も意味する。すなわち、本発明における遊星
機構は、遊星歯車機構の場合と遊星ローラ機構の場合と
を包含する。In the present invention, the solar ring, planetary ring, and inner ring refer not only to the case where each of them is composed of a gear, but also to the case where each of them is composed of a roller. That is, the planetary mechanism in the present invention includes a planetary gear mechanism and a planetary roller mechanism.
以下、第１図及び第２図に示す実施例によって説明する
。The embodiments shown in FIGS. 1 and 2 will be explained below.
第１図及び第２図に示す実施例において、多段遊星型変
速装置１には遊星機構（遊星歯車機構）が２段に設けら
れ、太陽歯車４．遊星歯車５、内歯車６が互いに噛合す
る遊星機構工と、太陽歯車４′、遊星歯車５゛、内歯車
６′が互いに噛合する遊星機構■とが設けられている。In the embodiment shown in FIGS. 1 and 2, a multi-stage planetary transmission 1 is provided with two stages of planetary mechanisms (planetary gear mechanisms), and a sun gear 4. A planetary mechanism in which a planetary gear 5 and an internal gear 6 mesh with each other, and a planetary mechanism (2) in which a sun gear 4', a planetary gear 5', and an internal gear 6' mesh with each other are provided.
遊星機構Ｉは、太陽歯車４を原動機（電動モータ）２の
出力軸２ａに固定して動力を入力するようにしている。The planetary mechanism I has a sun gear 4 fixed to an output shaft 2a of a prime mover (electric motor) 2 to input power.
その太陽歯車４の周囲には３個の遊星歯車５が等間隔に
配置されている。Three planetary gears 5 are arranged at equal intervals around the sun gear 4.
各遊星歯車５は、それぞれ遊星軸７にベアリング８を介
すると共に、さらに遊動リング９を仲介させて回転自在
に支持されている。各遊星軸７は円板状のキャリヤ１２
に固定され、そのキャリヤ１２は内歯を設けて遊星機構
■側の太陽歯車４゛にスプライン嵌合している。Each planetary gear 5 is rotatably supported by a planetary shaft 7 through a bearing 8 and also through a floating ring 9. Each planetary shaft 7 has a disk-shaped carrier 12
The carrier 12 has internal teeth and is spline-fitted to the sun gear 4' on the planetary mechanism (1) side.
遊星機構■の太陽歯車４°の周囲には、同じく３個の遊
星歯車５′が等間隔に配置され、各遊星歯車５°は同様
に遊星軸７゛にベアリング８° と遊動リング９゛を介
して回転自在に支持されている。また、遊星軸７′ は
キャリヤを兼ねた出力用のカップリング３に固定されて
いる。Around the sun gear 4° of the planetary mechanism ■, three planetary gears 5' are arranged at equal intervals, and each planetary gear 5' has a bearing 8° and an idler ring 9' on the planetary shaft 7'. It is rotatably supported through. Further, the planetary shaft 7' is fixed to an output coupling 3 which also serves as a carrier.
上記構成において、遊星機構工の原動機２側の側面には
、遊星歯車５．遊動リング９．ベアリング８などの抜け
止め用として係止板１３が設けられている。遊星機構Ｉ
の反対側の側面に設けたキャリヤ１２は、自己の遊星歯
車５．遊動リング９．ベアリング８に直接当接させるこ
とにより、これら遊星歯車５などの軸方向への抜け止め
作用をすると同時に、反対側の面を遊星機構■の遊星歯
車５゛、遊動リング９゛、ヘアリング８゛に対して当接
させることにより、これら遊星歯車５゛などの軸方向へ
の抜け止め作用をしている。また、遊星機構Ｈの反対側
の側面でキャリヤを兼ねているカップリング３は、その
内側面を遊星歯車５”、遊動リング９′、ヘアリング８
′に当接させて、これら遊星歯車５などの抜け止め作用
をしている。In the above configuration, the planetary gear 5. Floating ring9. A locking plate 13 is provided to prevent the bearing 8 and the like from coming off. Planetary Organization I
The carrier 12 provided on the opposite side of the planetary gear 5. Floating ring9. By directly contacting the bearing 8, it acts to prevent these planetary gears 5, etc. from coming off in the axial direction, and at the same time, the opposite surface is used to connect the planetary gear 5'', floating ring 9'', and hair ring 8'' of the planetary mechanism ■. By abutting against the planetary gear 5', it acts to prevent the planetary gears 5' from coming off in the axial direction. In addition, the coupling 3, which also serves as a carrier on the opposite side of the planetary mechanism H, has its inner side connected to the planetary gear 5'', the floating ring 9', and the hair ring 8.
' to prevent the planetary gears 5 from coming off.
このように、上記変速装置では、キャリヤが遊星歯車な
どの抜け止め機構として兼用されることにより、第３図
の従来装置で必要とされていたクリップ１０・、係止板
１１などの抜け止め機構は不要になる。その結果として
、これら従来の抜け止め機構のスペースが省略され、遊
星機構同士が密着するように連結されるため、軸方向の
全長が著しく短縮され、コンパクトになる。In this way, in the above-mentioned transmission, the carrier is also used as a mechanism for preventing the planetary gears from falling off, so that the mechanism for preventing the clips 10 and the locking plates 11 from falling off, which were required in the conventional device shown in FIG. becomes unnecessary. As a result, the space for these conventional retaining mechanisms is omitted, and the planetary mechanisms are closely connected to each other, so the overall length in the axial direction is significantly shortened, making it more compact.
また、クリップ１０．係止板１１の加工、これら部品を
取り付けるための遊星軸上の加工などの作業工数が無く
なり、その上にこれら部品の省略と全長の短縮などによ
って装置は著しく軽量化される。また、キャリヤと遊星
歯車との接触面は、それぞれ同方向の回転になるので、
接触による摩擦力が若干発生するとしても、大きな影響
をうることにはない。Also, clip 10. The number of man-hours required for machining the locking plate 11 and machining the planetary shaft for attaching these parts is eliminated, and in addition, the weight of the device is significantly reduced by omitting these parts and shortening the overall length. Also, since the contact surfaces between the carrier and the planetary gear rotate in the same direction,
Even if some frictional force is generated due to contact, it will not have a large effect.
なお、上述した実施例では、遊星機構を２段連結する場
合について例示したが、本発明は３段以上に連結する場
合にも適用することができる。In addition, although the above-mentioned embodiment illustrated the case where the planetary mechanisms are connected in two stages, the present invention can also be applied to the case where the planetary mechanisms are connected in three or more stages.
〔発明の効果］
上述したように、本発明の多段遊星型変速装置によると
、キャリヤを遊星輪などの抜け止め用に兼用させた構成
にしたので、装置の軸方向の全長を大幅に短縮し、コン
パクトにすると共に、装置製作における工数低減と装置
の軽量化を可能にする。[Effects of the Invention] As described above, according to the multi-stage planetary transmission of the present invention, the carrier is also used to prevent the planet wheels from coming off, so the overall axial length of the device can be significantly shortened. This makes it possible to make the device compact, reduce man-hours in manufacturing the device, and reduce the weight of the device.
第１図は本発明の実施例からなる多段遊星型変速装置を
一部断面にして示す側面図、第２図は第１図のＡ−Ａ’
矢視図、第３図は従来の多段遊星型変速装置を一部断面
にして示す側面図である。
１・・・多段遊星型変速装置、４，４゛・・・太陽歯車
（太陽輪）、５．５’ ・・・遊星歯車（遊星輪）、６
．６°・・・内歯車（内輪）、８．８’ ・・・ベアリ
ング、９，９゛・・・遊動リング、１２・・・キャリヤ
、■、■・・・遊星機構。FIG. 1 is a partially sectional side view of a multi-stage planetary transmission according to an embodiment of the present invention, and FIG. 2 is a side view taken along line AA' in FIG.
The arrow view and FIG. 3 are side views showing a conventional multi-stage planetary transmission with a partial cross section. 1...Multi-stage planetary transmission, 4,4゛...Sun gear (solar ring), 5.5'...Planetary gear (planet wheel), 6
．． 6°...Internal gear (inner ring), 8.8'...Bearing, 9,9゛...Idle ring, 12...Carrier, ■, ■...Planetary mechanism.
Claims (1)
に複数組連結した多段遊星型変速装置において、互いに
隣接する一方の遊星機構の遊星軸を支持するキャリヤを
、自己の遊星輪に接触させると同時に、他方の遊星機構
の遊星輪にも接触させ、該キャリヤを遊星輪の抜け止め
機構に兼用して複数組の遊星機構を重合連結した多段遊
星型変速装置。In a multi-stage planetary transmission in which a plurality of sets of planetary mechanisms each consisting of a sun ring, a planetary ring, and an inner ring are connected in the axial direction, a carrier supporting the planetary shaft of one of the adjacent planetary mechanisms is connected to the planetary ring of the own planetary ring. A multi-stage planetary transmission device in which a plurality of sets of planetary mechanisms are connected in an overlapping manner by bringing the carrier into contact with the planetary wheel of the other planetary mechanism and also making contact with the planetary wheel of the other planetary mechanism, and by using the carrier also as a mechanism for preventing the planetary wheel from coming off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15540590A JPH0450538A (en) | 1990-06-15 | 1990-06-15 | Multistep planetary gear transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15540590A JPH0450538A (en) | 1990-06-15 | 1990-06-15 | Multistep planetary gear transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0450538A true JPH0450538A (en) | 1992-02-19 |
Family
ID=15605262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15540590A Pending JPH0450538A (en) | 1990-06-15 | 1990-06-15 | Multistep planetary gear transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0450538A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994010478A1 (en) * | 1992-11-04 | 1994-05-11 | Casarotto G. & C. S.R.L. | Epicyclic reduction gear unit |
| JP2010065777A (en) * | 2008-09-11 | 2010-03-25 | Ntn Corp | Electric linear motion actuator and electromotive brake device |
| US7828687B2 (en) | 2006-10-25 | 2010-11-09 | Remy Technologies, L.L.C. | Modular planetary gear assembly and drive |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61209883A (en) * | 1985-03-11 | 1986-09-18 | 日本電池株式会社 | Reduction gear with speed change mechanism for electric rotary tool |
-
1990
- 1990-06-15 JP JP15540590A patent/JPH0450538A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61209883A (en) * | 1985-03-11 | 1986-09-18 | 日本電池株式会社 | Reduction gear with speed change mechanism for electric rotary tool |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994010478A1 (en) * | 1992-11-04 | 1994-05-11 | Casarotto G. & C. S.R.L. | Epicyclic reduction gear unit |
| EP0666968A1 (en) * | 1992-11-04 | 1995-08-16 | Casarotto G & C Srl | Epicyclic reduction gear unit. |
| US7828687B2 (en) | 2006-10-25 | 2010-11-09 | Remy Technologies, L.L.C. | Modular planetary gear assembly and drive |
| JP2010065777A (en) * | 2008-09-11 | 2010-03-25 | Ntn Corp | Electric linear motion actuator and electromotive brake device |
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