JP2000240771A - Planetary transmission mechanism - Google Patents
Planetary transmission mechanismInfo
- Publication number
- JP2000240771A JP2000240771A JP4038699A JP4038699A JP2000240771A JP 2000240771 A JP2000240771 A JP 2000240771A JP 4038699 A JP4038699 A JP 4038699A JP 4038699 A JP4038699 A JP 4038699A JP 2000240771 A JP2000240771 A JP 2000240771A
- Authority
- JP
- Japan
- Prior art keywords
- lubricant
- planetary
- valve
- transmission mechanism
- lubricant reservoir
- 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.)
- Granted
Links
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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
-
- 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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0479—Gears or bearings on planet carriers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Friction Gearing (AREA)
- General Details Of Gearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、遊星ギヤ機構や遊
星ローラ機構等の遊星機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planetary mechanism such as a planetary gear mechanism and a planetary roller mechanism.
【０００２】[0002]
【従来の技術と発明が解決しようとする課題】遊星ギヤ
機構では、リングギヤとサンギヤとの間に複数の遊星ギ
ヤを介在させており、これらの遊星ギヤはキャリアによ
り支軸を介して回動自在に支持されている。通例、支軸
の外周面と遊星ギヤの内周面との間には、転がり軸受が
介在するが、小型化の要請から転動体を直接介在させる
場合がある。2. Description of the Related Art In a planetary gear mechanism, a plurality of planetary gears are interposed between a ring gear and a sun gear, and these planetary gears are rotatable by a carrier via a support shaft. It is supported by. Usually, a rolling bearing is interposed between the outer peripheral surface of the support shaft and the inner peripheral surface of the planetary gear, but a rolling element may be directly interposed due to a demand for miniaturization.
【０００３】また、通例、焼き付き防止のために、転動
体に潤滑剤を供給する機構を設けている。例えば、支軸
の内部に潤滑剤溜め部を設け、この潤滑剤溜め部にキャ
リア側から通ずる導入路を介して潤滑剤を供給すると共
に、転動体側へ通ずる導出路を介して潤滑剤溜め部から
転動体に潤滑剤を供給するようにしている。潤滑剤は重
力によってハウジング内の下部に溜まる傾向にあるが、
例えばキャリアが回転される場合には、キャリアの回転
によって潤滑剤を攪拌しつつその遠心力を利用して、潤
滑剤に送給圧を生じさせ、導入路及び潤滑剤溜め部を介
して潤滑剤を転動体ヘ供給している。また、遊星ギヤ機
構と同期して駆動される圧力源による送給圧を用いる場
合もある。[0003] Usually, a mechanism for supplying a lubricant to the rolling elements is provided in order to prevent seizure. For example, a lubricant reservoir is provided inside the support shaft, and the lubricant reservoir is supplied to the lubricant reservoir via an introduction path leading from the carrier side, and the lubricant reservoir is supplied via a lead-out path leading to the rolling element side. To supply the lubricant to the rolling elements. Lubricant tends to collect in the lower part of the housing due to gravity,
For example, when the carrier is rotated, the centrifugal force is used while stirring the lubricant by the rotation of the carrier to generate a feed pressure in the lubricant, and the lubricant is supplied through the introduction path and the lubricant reservoir. Is supplied to the rolling elements. In some cases, a feed pressure from a pressure source driven in synchronization with the planetary gear mechanism is used.
【０００４】何れの場合においても、遊星ギヤ機構及び
圧力源が停止すると、遠心力や圧力源による送給圧がな
くなる。このとき、導入路が潤滑剤溜め部から下方へ延
びるような位置関係にあると、潤滑剤が自重によって導
入路側へ下降流失してしまう。そうすると、次ぎに遊星
ギヤ機構を始動したときに、転動体を潤滑するための潤
滑剤が不足し、焼き付きを起こすおそれがある。同様の
問題は遊星ローラ機構にも存在する。[0004] In any case, when the planetary gear mechanism and the pressure source are stopped, the centrifugal force and the pressure supplied by the pressure source disappear. At this time, if the introduction path has a positional relationship extending downward from the lubricant reservoir, the lubricant will flow down to the introduction path side by its own weight. Then, when the planetary gear mechanism is started next time, the lubricant for lubricating the rolling elements is insufficient, and there is a possibility that seizure may occur. A similar problem exists with planetary roller mechanisms.
【０００５】本発明は上記課題に鑑みてなされたもので
あり、始動時の焼き付きを確実に防止することができる
遊星変速機構を提供することを目的とする。[0005] The present invention has been made in view of the above problems, and has as its object to provide a planetary transmission mechanism that can reliably prevent image sticking at the time of starting.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
の課題解決手段として、請求項１記載の発明の態様は、
外輪部材と内輪部材との間にトルク伝達可能に介在する
複数の環状の遊星部材と、支持板、及びこの支持板に固
定され対応する遊星部材にそれぞれ挿通されて対応する
遊星部材を回動自在に支持する複数の支軸を含むキャリ
アと、各支軸の外周面と対応する遊星部材の内周面との
間に介在する複数の転動体と、各支軸の内部に形成さ
れ、潤滑剤を溜める潤滑剤溜め部と、各潤滑剤溜め部に
送給圧が与えられた潤滑剤を導入する導入路と、各支軸
の内部に形成され、潤滑剤溜め部から転動体へ潤滑剤を
導出する導出路と、潤滑剤の送給圧がなくなったとき
に、各潤滑剤溜め部から対応する導入路を通して潤滑剤
が下降流出することを防止する弁手段とを備えることを
特徴とするものである。Means for Solving the Problems As means for solving the problems to achieve the above object, the aspect of the invention described in claim 1 is as follows.
A plurality of annular planetary members interposed between the outer ring member and the inner ring member so as to transmit torque, a support plate, and the corresponding planetary member fixed to the support plate and inserted into the corresponding planetary member to freely rotate the corresponding planetary member. And a plurality of rolling elements interposed between the outer peripheral surface of each support shaft and the inner peripheral surface of the corresponding planetary member, and a lubricant formed inside each support shaft. And a supply path for introducing lubricant supplied to each of the lubricant reservoirs with a lubricant, and a lubricant formed in each of the support shafts to supply the lubricant from the lubricant reservoir to the rolling elements. And a valve means for preventing the lubricant from descending and flowing out from each lubricant reservoir through the corresponding introduction path when the supply pressure of the lubricant is lost. It is.
【０００７】本態様では、遊星変速機構が停止して送給
圧を生じさせるための遠心力がなくなったり、送給圧を
生ずる圧力源が停止したりしたときに、弁が閉じ、潤滑
剤溜め部の潤滑剤が重力により導入路を通して下降流失
することが防止される。これにより、遊星変速機構の停
止時においても潤滑剤溜め部に潤滑剤が保持される。し
たがって、次に遊星変速機構が始動されたときに、潤滑
不足となるようなことがない。In this embodiment, when the planetary speed change mechanism stops and the centrifugal force for generating the feed pressure disappears, or when the pressure source that generates the feed pressure stops, the valve closes and the lubricant reservoir is closed. This prevents the lubricant of the portion from flowing down through the introduction path due to gravity. Thus, even when the planetary transmission mechanism is stopped, the lubricant is held in the lubricant reservoir. Therefore, the next time the planetary transmission mechanism is started, the lubrication will not be insufficient.
【０００８】請求項２記載の発明の態様は、請求項１に
おいて、上記導入路は潤滑剤溜め部からキャリアの中心
側へ延びており、上記弁手段は、導入路に設けられる弁
座と、送給圧がなくなったときに自重によりキャリアの
中心側に移動することにより上記の弁座に密接する弁体
とを含むことを特徴とするものである。本態様では、遊
星変速機構の停止時において、キャリアの中心よりも上
方に位置する導入路は、対応する潤滑剤溜め部からキャ
リアの中心側である下方へ延びることになり、したがっ
て、これらの導入路に設けられた弁体のみが自重で弁を
閉じることになる。自重により作動する弁を用いた簡単
な構造で潤滑剤の流失防止を達成できる。According to a second aspect of the present invention, in the first aspect, the introduction path extends from the lubricant reservoir toward the center of the carrier, and the valve means includes a valve seat provided in the introduction path, And a valve element which moves to the center side of the carrier by its own weight when the supply pressure disappears, thereby closely contacting the valve seat. In this aspect, when the planetary transmission mechanism is stopped, the introduction path located above the center of the carrier extends downward from the corresponding lubricant reservoir to the center side of the carrier. Only the valve element provided on the road closes the valve by its own weight. With a simple structure using a valve that operates by its own weight, it is possible to prevent the lubricant from flowing out.
【０００９】請求項３記載の発明の態様は、請求項１又
は２において、上記弁手段は支軸の内部に設けられるこ
とを特徴とするものである。本態様では、潤滑剤を供給
する機構を支軸の内部に組み込むことができ、小型化と
構造の簡素化を図ることができる。According to a third aspect of the present invention, in the first or second aspect, the valve means is provided inside the support shaft. In this aspect, the mechanism for supplying the lubricant can be incorporated inside the support shaft, and the size and the structure can be simplified.
【００１０】[0010]
【発明の実施の形態】本発明の好ましい実施の形態につ
いて添付図面を参照しつつ説明する。図１は本発明の一
実施の形態に係る遊星変速機構の要部の断面図である。
本実施の形態では、リングギヤが固定されるタイプの遊
星ギヤ機構の一例に則して説明するが、本発明はこれに
限らず、他の公知の遊星ギヤ機構や遊星ローラ機構に適
用することができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a sectional view of a main part of a planetary transmission mechanism according to one embodiment of the present invention.
In the present embodiment, a description will be given based on an example of a planetary gear mechanism of a type in which a ring gear is fixed, but the present invention is not limited to this, and may be applied to other known planetary gear mechanisms and planetary roller mechanisms. it can.
【００１１】図１を参照して、遊星変速機構としての遊
星ギヤ機構Ａは、ハウジング１に固定された外輪部材と
してのリングギヤ２と、入力軸３に連結される内輪部材
としてのサンギヤ４と、リングキヤ２とサンギヤ４との
間に介在する複数の遊星ギヤ５とを備えている。遊星ギ
ヤ５はキャリア６によって回動自在に支持されている。
キャリア６は、出力軸８に連結されており、自身が回転
することにより遊星ギヤ５を公転させる。キャリア６は
出力軸８に連結される環状の支持板６Ａと、この支持板
６Ａに固定され各遊星ギヤ５を回動自在に支持する支軸
７とを備えている。Referring to FIG. 1, a planetary gear mechanism A as a planetary transmission mechanism includes a ring gear 2 as an outer ring member fixed to a housing 1, a sun gear 4 as an inner ring member connected to an input shaft 3, and A plurality of planet gears 5 are provided between the ring carrier 2 and the sun gear 4. The planet gear 5 is rotatably supported by a carrier 6.
The carrier 6 is connected to the output shaft 8 and revolves the planetary gear 5 by rotating itself. The carrier 6 includes an annular support plate 6A connected to the output shaft 8, and a support shaft 7 fixed to the support plate 6A and rotatably supporting each planetary gear 5.
【００１２】遊星ギヤ５は環状をしており、その内周面
９と支軸７の外周面１０との間には複数の円筒ころから
なる転動体１１が介在している。この転動体１１を介し
て遊星ギヤ５が支軸７の周囲に回動自在に支持されてい
る。支軸７の一端部１２は、支持板６Ａの挿通孔１３に
挿通された状態で固定されている。支軸７には、一端部
１２側から軸方向に延びる孔が形成され、この孔によっ
て潤滑剤を溜めるための潤滑剤溜め部１４が構成されて
いる。この潤滑剤溜め部１４は上記一端部１２側から穴
あけ加工され、一端部１２での開口端が栓１５により閉
塞されている。The planetary gear 5 is annular, and a rolling element 11 composed of a plurality of cylindrical rollers is interposed between the inner peripheral surface 9 and the outer peripheral surface 10 of the support shaft 7. The planetary gear 5 is rotatably supported around the support shaft 7 via the rolling elements 11. One end 12 of the support shaft 7 is fixed while being inserted into the insertion hole 13 of the support plate 6A. A hole extending in the axial direction from the one end 12 side is formed in the support shaft 7, and the hole forms a lubricant reservoir 14 for retaining a lubricant. The lubricant reservoir 14 is drilled from the one end 12 side, and the open end of the one end 12 is closed by a plug 15.
【００１３】また、支軸７の一端部１２には、潤滑剤溜
め部１４に潤滑剤を導入するための導入路１６が、潤滑
剤溜め部１４からキャリア６の求心方向Ｘへ（軸心Ｃ
側）へ延びるようにして形成されている。この導入路１
６は支持板６Ａの径方向に延びる第１の供給路１７に連
通しており、また第１の供給路１７は出力軸８を軸方向
に貫通してポンプＰに通ずる第２の供給路１８に連通し
ている。ポンプＰは本遊星ギヤ機構Ａと同期して駆動さ
れるものであり、ポンプＰによる所定の送給圧を持って
潤滑剤が第２の供給路１８、第１の供給路１７及び導入
路１６を介して潤滑剤溜め部１４ヘ送給されるようにな
っている。An introduction path 16 for introducing a lubricant into the lubricant reservoir 14 is provided at one end 12 of the support shaft 7 from the lubricant reservoir 14 in the centripetal direction X of the carrier 6 (the axis C).
Side). This introduction route 1
6 communicates with a first supply path 17 extending in the radial direction of the support plate 6A, and the first supply path 17 penetrates the output shaft 8 in the axial direction and communicates with the pump P through a second supply path 18. Is in communication with The pump P is driven in synchronization with the planetary gear mechanism A, and the lubricant is supplied to the second supply path 18, the first supply path 17, and the introduction path 16 at a predetermined supply pressure by the pump P. The lubricant is supplied to the lubricant reservoir 14 via the.
【００１４】支軸７の遊星ギヤ５の軸方向に中央部に
は、潤滑剤溜め部１４から遠心方向Ｙに沿って、転動体
１１側へ潤滑剤を導く導出路１４ａが形成されている。
また、上記の導入路１６には、送給圧がなくなったとき
に潤滑剤溜め部１４から導入路１６を通して潤滑剤が下
降流出することを防止する弁１９が設けられている。図
２（ａ）及び（ｂ）を参照して、導入路１６に設けられ
る弁座２０と、送給圧がなくなったときに自重により下
降して、上記の弁座２０に密接する例えばボールからな
る弁体２１とを含んでいる。A lead-out path 14a is formed in the center of the support shaft 7 in the axial direction of the planetary gear 5 to guide the lubricant from the lubricant reservoir 14 to the rolling element 11 along the centrifugal direction Y.
Further, the introduction path 16 is provided with a valve 19 for preventing the lubricant from descending and flowing out from the lubricant reservoir 14 through the introduction path 16 when the supply pressure is lost. Referring to FIGS. 2A and 2B, a valve seat 20 provided in the introduction path 16 is lowered by its own weight when the supply pressure is lost, and, for example, from a ball closely contacting the valve seat 20. And a valve element 21.
【００１５】弁座２０は図３に示すような環状板２２の
内周縁２３により構成され、内周縁２３は複数の舌片２
４を有する菊座状をなしている。図２（ａ）及び（ｂ）
において、２５は弁体２１の潤滑剤溜め部１４側への移
動を規制する規制部である。この規制部２５は、図２
（ａ）に示すように弁体２１が規制部２５に当接した状
態で、潤滑剤溜め部１４側への潤滑剤の導入を許容する
複数の溝２６を放射状に形成している。The valve seat 20 is formed by an inner peripheral edge 23 of an annular plate 22 as shown in FIG.
It has a chrysanthemum shape with four. FIG. 2 (a) and (b)
In the figure, reference numeral 25 denotes a regulating portion for regulating the movement of the valve body 21 toward the lubricant reservoir 14. This restricting section 25 is shown in FIG.
As shown in (a), a plurality of grooves 26 are formed radially to allow the introduction of the lubricant into the lubricant reservoir 14 with the valve body 21 in contact with the regulating portion 25.
【００１６】次いで、図２（ａ）及び（ｂ）並びに図4
を参照して、弁１９の働きについて説明する。図２
（ａ）及び（ｂ）は軸心Ｃよりも上方に変位している支
軸７を示しており、これらの図では求心方向Ｘが下方Ｚ
１に沿い、遠心方向Ｙが上方Ｚ２に沿っている。図２
（ａ）に示すように遊星変速機構Ａ及びポンプＰの運転
中の状態では、弁体２１は、その自重Ｗに抗して潤滑剤
の送給圧Ｐ１及び遠心力Ｆによって上方Ｚ２の規制部２
５側に押し付けられており、弁体２１と弁座２０との間
には環状の隙間Ｓが形成されている。この隙間Ｓ及び導
入路１６を通して潤滑剤溜め部１４側に潤滑剤が円滑に
供給される。Next, FIGS. 2A and 2B and FIG.
The operation of the valve 19 will be described with reference to FIG. FIG.
(A) and (b) show the support shaft 7 displaced above the axis C. In these figures, the centripetal direction X is the lower Z
1 and the centrifugal direction Y is along the upper direction Z2. FIG.
As shown in (a), when the planetary transmission mechanism A and the pump P are in operation, the valve body 21 restricts the upward Z2 by the lubricant supply pressure P1 and the centrifugal force F against its own weight W. 2
5, and an annular gap S is formed between the valve body 21 and the valve seat 20. The lubricant is smoothly supplied to the lubricant reservoir 14 through the gap S and the introduction path 16.
【００１７】そして、図２（ｂ）に示すように遊星変速
機構Ａ及びポンプＰが停止した状態では、潤滑剤の送給
圧Ｐ１がなくなるので、弁体２１が自重Ｗにより下降
し、弁座２０に当接して上記の隙間Ｓを閉塞し、弁１９
が閉じる。これにより、潤滑剤溜め部１４から導入路１
６を介して潤滑剤が下降流出することが防止される。一
方、図４は遊星変速機構Ａ及びポンプＰの運転中におい
て、軸心Ｃよりも下方に変位している支軸７を示してお
り、図４では求心方向Ｘが上方Ｚ２に沿い、遠心方向Ｙ
が下方Ｚ１に沿っている。図４に示すように弁体２１
は、その自重Ｗ、潤滑剤の送給圧Ｐ１及び遠心力Ｆによ
って、下方Ｚ１の規制部２５側に押し付けられており、
弁体２１と弁座２０との間には環状の隙間Ｓが形成され
ている。この隙間Ｓ及び導入路１６を通して潤滑剤溜め
部１４側に潤滑剤が円滑に供給される。Then, as shown in FIG. 2B, when the planetary transmission mechanism A and the pump P are stopped, the supply pressure P1 of the lubricant is lost, so that the valve body 21 is lowered by its own weight W, and the valve seat 21 is lowered. 20 and closes the gap S, and the valve 19
Closes. As a result, the lubricant path 14 is
6 prevents the lubricant from flowing down. On the other hand, FIG. 4 shows the support shaft 7 displaced below the axis C during the operation of the planetary transmission mechanism A and the pump P. In FIG. 4, the centripetal direction X is along the upper direction Z2 and the centrifugal direction is shown. Y
Are along the lower part Z1. As shown in FIG.
Is pressed against the regulating portion 25 on the lower side Z1 by its own weight W, the feeding pressure P1 of the lubricant, and the centrifugal force F.
An annular gap S is formed between the valve body 21 and the valve seat 20. The lubricant is smoothly supplied to the lubricant reservoir 14 through the gap S and the introduction path 16.
【００１８】また、図４において、遊星変速機構Ａ及び
ポンプＰが停止して、送給圧Ｐ１及び遠心力Ｆが働かな
くなっても、弁体２１の自重により弁体２１が下降状態
を維持できる。そもそも、図４の状態では、導入路１６
が潤滑剤溜め部１４よりも上方に位置するので、潤滑剤
溜め部１４から導入路１６側への潤滑剤の下降流出はあ
り得ない。In FIG. 4, even if the planetary transmission mechanism A and the pump P are stopped and the feed pressure P1 and the centrifugal force F do not work, the valve body 21 can maintain the lowered state by its own weight. . In the first place, in the state of FIG.
Is located above the lubricant reservoir 14, so that the lubricant cannot flow downward from the lubricant reservoir 14 to the introduction path 16 side.
【００１９】本実施の形態では、遊星変速機構Ａ及びポ
ンプＰが停止したときに、軸心Ｃよりも上位に位置する
支軸７に関して、ポンプＰや遠心力による送給圧Ｐ１が
なくなったとしても、自重により弁１９が閉じ、潤滑剤
溜め部１４の潤滑剤が導入路１６を通して下降流失する
ことが防止される。これにより、遊星変速機構Ａの停止
時においても潤滑剤溜め部１４に潤滑剤が保持される結
果、次ぎに始動されたときに、潤滑不足となるようなこ
とがなく、焼き付きの発生を確実に防止できる。In the present embodiment, it is assumed that when the planetary transmission mechanism A and the pump P are stopped, the pump P and the feed pressure P1 due to centrifugal force have disappeared with respect to the support shaft 7 located above the shaft center C. Also, the valve 19 is closed by its own weight, and the lubricant in the lubricant reservoir 14 is prevented from flowing down through the introduction path 16. As a result, even when the planetary transmission mechanism A is stopped, the lubricant is retained in the lubricant reservoir 14, so that the next time the engine is started, lubrication will not be insufficient, and the occurrence of seizure will be ensured. Can be prevented.
【００２０】また、自重により作動する弁体２１を用い
た簡単な構造で停止時の潤滑剤の流失防止を達成でき
る。さらに、潤滑剤の供給・保持に係わる機構を支軸７
の内部に組み込むことができ、小型化と構造の簡素化を
図ることができる。なお、上記実施の形態において、例
えば、弁１９を支持板６Ａの第１の供給路１７に設ける
ようにしても良い。Further, with a simple structure using the valve element 21 which operates by its own weight, it is possible to prevent the lubricant from flowing out at the time of stopping. Further, a mechanism related to the supply and holding of the lubricant is provided by a support shaft 7.
, And can be reduced in size and simplified in structure. In the above embodiment, for example, the valve 19 may be provided in the first supply path 17 of the support plate 6A.
【００２１】また、ポンプＰを設けない場合、第１の供
給路１７がハウジング１の内部に開放していて、重力に
より下方にハウジング１内の下部に溜まる傾向にある潤
滑剤をキャリア６で攪拌しつつ遠心力で第１の供給路１
７内に導くようにしても良い。次いで、図５は本発明の
他の実施の形態を示している。図５を参照して、本実施
の形態が図１の実施の形態と異なるのは下記である。す
なわち、図１の実施の形態では、出力軸８を貫通する第
２の供給路１８、及びキャリア６の支持板６Ａを貫通す
る第１の供給路１７を介して、ポンプＰにより弁１９側
へ強制的に潤滑剤を送給した。これに対して、本実施の
形態では、潤滑剤は、入力軸３を軸方向に貫通する供給
路５０、入力軸３を径方向に貫通する供給孔５１，５２
を介してポンプＰによる送給圧をもってギヤ収容空間Ｂ
内へ放出され、放出された潤滑剤は遠心力による送給圧
を得て、軸受５３，５４，５５の内部空間を通過した
後、遊星ギヤ５の両端面に対向する状態で支軸７に嵌め
られたサイドワッシャ５６の側方のスペース５７を経由
して、弁１９に至るようになっている。When the pump P is not provided, the first supply passage 17 is open to the inside of the housing 1, and the lubricant which tends to accumulate in the lower part of the housing 1 by gravity is stirred by the carrier 6. 1st supply path 1 by centrifugal force
7 may be guided. Next, FIG. 5 shows another embodiment of the present invention. Referring to FIG. 5, the present embodiment is different from the embodiment of FIG. 1 in the following. That is, in the embodiment of FIG. 1, the pump P moves to the valve 19 side via the second supply path 18 penetrating the output shaft 8 and the first supply path 17 penetrating the support plate 6A of the carrier 6. The lubricant was forcibly fed. On the other hand, in the present embodiment, the lubricant is supplied through the supply path 50 that passes through the input shaft 3 in the axial direction, and the supply holes 51 and 52 that pass through the input shaft 3 in the radial direction.
The gear receiving space B is supplied with the feed pressure by the pump P through the
The lubricant is discharged to the inside, and the lubricant released receives the feed pressure by centrifugal force, passes through the internal space of the bearings 53, 54, 55, and then is applied to the support shaft 7 in a state of opposing both end surfaces of the planetary gear 5. The valve 19 is reached via a space 57 on the side of the fitted side washer 56.
【００２２】換言すると、本実施の形態では、ポンプＰ
により送給された潤滑剤が、ハウジング１内に区画され
るギヤ収容空間Ｂに放出された後、遠心力による送給圧
によって、弁１９が配された導入路１６へ到達する。し
かも、遠心力による送給の過程で軸受５３，５４，５５
の潤滑にも貢献する。図５において、図１の実施の形態
と同様の機能を果たす構成については同一符号を付して
その説明を省略する。遊星部材としての遊星ギヤ５は、
転動体１１を転動させる外輪５Ａと、この外輪５Ａを一
体回転可能に嵌め入れたギヤ形成体５Ｂとを含み、上記
のサイドワッシャ５６は外輪５Ａの端面に対向してい
る。また、出力軸８は入力軸３を取り囲む筒軸からな
り、軸受５８を介して入力軸３により回転自在に支持さ
れている。また、入力軸３に軸受５３を介して回転自在
に支持された支持板６Ｂと、出力軸８に所定の変速比を
もってギヤ結合する支持板６Ａとの間で、支軸７を両持
ち支持している。すなわち、キャリア６は一対の支持板
６Ａ，６Ｂと支軸７とを備えることになる。軸受５４は
支持板６Ｂとこれに対向するサンギヤ４の端面との間に
介在するスラスト軸受であり、軸受５５は支持板６Ａと
これに対向するサンギヤ４の端面との間に介在するスラ
スト軸受である。In other words, in this embodiment, the pump P
Is discharged into the gear housing space B defined in the housing 1, and then reaches the introduction path 16 in which the valve 19 is arranged by the feed pressure due to the centrifugal force. In addition, the bearings 53, 54, 55 in the process of feeding by centrifugal force.
Also contributes to lubrication. In FIG. 5, components having the same functions as those in the embodiment of FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. The planetary gear 5 as a planetary member is
It includes an outer ring 5A for rolling the rolling element 11 and a gear forming body 5B in which the outer ring 5A is fitted so as to be integrally rotatable, and the side washer 56 faces the end face of the outer ring 5A. The output shaft 8 is a cylindrical shaft surrounding the input shaft 3, and is rotatably supported by the input shaft 3 via a bearing 58. The support shaft 7 is supported at both ends between a support plate 6B rotatably supported on the input shaft 3 via a bearing 53 and a support plate 6A gear-coupled to the output shaft 8 with a predetermined speed ratio. ing. That is, the carrier 6 includes the pair of support plates 6A and 6B and the support shaft 7. The bearing 54 is a thrust bearing interposed between the support plate 6B and the end face of the sun gear 4 opposed thereto, and the bearing 55 is a thrust bearing interposed between the support plate 6A and the end face of the sun gear 4 opposed thereto. is there.
【００２３】なお、本発明は上記各実施の形態に限定さ
れるものではなく、本発明を、キャリア６が固定される
タイプのものや、ポンプを用いずに遠心力のみによって
潤滑剤の送給圧を生じさせるタイプのものにも適用する
ことができる等、本発明の範囲で種々の変更を施すこと
ができる。The present invention is not limited to the above embodiments. The present invention is not limited to the type in which the carrier 6 is fixed, or the type in which the lubricant is supplied only by centrifugal force without using a pump. Various modifications can be made within the scope of the present invention, such as being applicable to a type that generates pressure.
【００２４】[0024]
【発明の効果】請求項１記載の発明では、遊星変速機構
が停止して潤滑剤の送給圧がなくなったりしたときに、
弁が閉じるので、潤滑剤溜め部の潤滑剤が導入路を通し
て下降流失することが防止される。これにより、遊星変
速機構の停止時においても潤滑剤溜め部に潤滑剤が保持
される結果、次ぎに始動されたときに、潤滑不足となる
ようなことがなく、焼き付きの発生を確実に防止でき
る。According to the first aspect of the present invention, when the planetary transmission mechanism stops and the supply pressure of the lubricant disappears,
Since the valve is closed, the lubricant in the lubricant reservoir is prevented from flowing down through the introduction path. As a result, even when the planetary transmission mechanism is stopped, the lubricant is retained in the lubricant reservoir, so that the next time the engine is started, there is no possibility of insufficient lubrication, and the occurrence of image sticking can be reliably prevented. .
【００２５】請求項２記載の発明では、自重により作動
する弁を用いた簡単な構造で停止時の潤滑剤の流失防止
を達成できる。請求項３記載の発明では、潤滑剤の供給
・保持に係わる機構を支軸の内部に組み込むことがで
き、小型化と構造の簡素化を図ることができる。According to the second aspect of the present invention, it is possible to prevent the lubricant from flowing out at the time of stoppage with a simple structure using a valve operated by its own weight. According to the third aspect of the present invention, the mechanism for supplying and holding the lubricant can be incorporated in the support shaft, so that the size and the structure can be simplified.
【図１】本発明の一実施の形態の遊星ギヤ機構の要部の
断面図である。FIG. 1 is a sectional view of a main part of a planetary gear mechanism according to an embodiment of the present invention.
【図２】軸心よりも上位に位置する支軸の弁周囲を示す
断面図であり、（ａ）は遊星ギヤ機構及びポンプが運転
中の状態を示し、（ｂ）は停止時を示している。FIGS. 2A and 2B are cross-sectional views showing the periphery of a valve on a support shaft positioned higher than the shaft center, wherein FIG. 2A shows a state where the planetary gear mechanism and the pump are operating, and FIG. I have.
【図３】弁座を提供する環状板の概略平面図である。FIG. 3 is a schematic plan view of an annular plate providing a valve seat.
【図４】軸心よりも下位に位置する支軸の弁周囲を示す
断面図であり、遊星ギヤ機構及びポンプが運転中の状態
を示している。FIG. 4 is a cross-sectional view showing the periphery of the valve on a support shaft located below the shaft center, showing a state where the planetary gear mechanism and the pump are operating.
【図５】本発明の他の実施の形態の遊星ギヤ機構の要部
の断面図である。FIG. 5 is a sectional view of a main part of a planetary gear mechanism according to another embodiment of the present invention.
Ａ 遊星ギヤ機構（遊星変速機構） ２ リングキヤ（外輪部材） ４ サンギヤ（内輪部材） ５ 遊星ギヤ（遊星部材） ６ キャリア ６Ａ，６Ｂ 支持板 ７ 支軸 ９ 内周面 １０ 外周面 １１ 転動体 １４ 潤滑剤溜め部 １６ 導入路 １７ 第１の供給路 １８ 第２の供給路 １９ 弁 ２０ 弁座 ２１ 弁体 Ｃ 軸心 Ｘ 求心方向 Ｙ 遠心方向 Ｚ１ 下方 Ｚ２ 上方 Ｂ ギヤ収容空間 ５０ 供給路 ５１，５２ 供給孔 A planetary gear mechanism (planetary transmission mechanism) 2 ring carrier (outer ring member) 4 sun gear (inner ring member) 5 planetary gear (planetary member) 6 carrier 6A, 6B support plate 7 support shaft 9 inner peripheral surface 10 outer peripheral surface 11 rolling element 14 lubrication Reservoir 16 Introducing path 17 First supply path 18 Second supply path 19 Valve 20 Valve seat 21 Valve body C-axis X Centering direction Y Centrifugal direction Z1 Lower Z2 Upper B Gear housing space 50 Supply paths 51, 52 Supply Hole
───────────────────────────────────────────────────── フロントページの続き (72)発明者 野口 正博 大阪市中央区南船場三丁目５番８号 光洋 精工株式会社内 Ｆターム(参考） 3J051 AA01 BA03 BB08 BC01 BD02 BE03 EC00 ED08 3J063 AB12 AB35 AC01 BA11 BB23 BB41 CA01 CB03 CB04 CB05 CB06 CB36 CB48 CD02 CD70 XD03 XD42 XD43 XD73 XE14 XE15 XF14 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masahiro Noguchi 3-5-8 Minamisenba, Chuo-ku, Osaka-shi Koyo Seiko Co., Ltd. F-term (reference) 3J051 AA01 BA03 BB08 BC01 BD02 BE03 EC00 ED08 3J063 AB12 AB35 AC01 BA11 BB23 BB41 CA01 CB03 CB04 CB05 CB06 CB36 CB48 CD02 CD70 XD03 XD42 XD43 XD73 XE14 XE15 XF14
Claims (3)
能に介在する複数の環状の遊星部材と、 支持板、及びこの支持板に固定され対応する遊星部材に
それぞれ挿通されて対応する遊星部材を回動自在に支持
する複数の支軸を含むキャリアと、 各支軸の外周面と対応する遊星部材の内周面との間に介
在する複数の転動体と、 各支軸の内部に形成され、潤滑剤を溜める潤滑剤溜め部
と、 各潤滑剤溜め部に送給圧が与えられた潤滑剤を導入する
導入路と、 各支軸の内部に形成され、潤滑剤溜め部から転動体へ潤
滑剤を導出する導出路と、 潤滑剤の送給圧がなくなったときに、各潤滑剤溜め部か
ら対応する導入路を通して潤滑剤が下降流出することを
防止する弁手段とを備えることを特徴とする遊星変速機
構。1. A plurality of annular planetary members interposed between an outer ring member and an inner ring member so as to transmit torque, a support plate, and a corresponding planet fixed to the support plate and inserted through a corresponding planetary member. A carrier including a plurality of support shafts rotatably supporting the member; a plurality of rolling elements interposed between an outer peripheral surface of each support shaft and an inner peripheral surface of the corresponding planetary member; A lubricant reservoir formed to store lubricant, an introduction path for introducing lubricant supplied to each lubricant reservoir with a supply pressure, and An outlet path for discharging the lubricant to the moving body, and a valve means for preventing the lubricant from flowing down from each lubricant reservoir through the corresponding inlet path when the supply pressure of the lubricant is lost. A planetary transmission mechanism characterized by the above.
中心側へ延びており、 上記弁手段は、導入路に設けられる弁座と、送給圧がな
くなったときに自重によりキャリアの中心側に移動する
ことにより上記の弁座に密接する弁体とを含むことを特
徴とする請求項１記載の遊星変速機構。2. The introduction path extends from the lubricant reservoir to the center of the carrier. The valve means includes a valve seat provided in the introduction path and a center of the carrier due to its own weight when the supply pressure is lost. The planetary transmission mechanism according to claim 1, further comprising: a valve body that moves to the side to come into close contact with the valve seat.
を特徴とする請求項１又は２記載の遊星変速機構。3. The planetary transmission mechanism according to claim 1, wherein said valve means is provided inside a support shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4038699A JP4340933B2 (en) | 1999-02-18 | 1999-02-18 | Planetary transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4038699A JP4340933B2 (en) | 1999-02-18 | 1999-02-18 | Planetary transmission mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000240771A true JP2000240771A (en) | 2000-09-05 |
| JP4340933B2 JP4340933B2 (en) | 2009-10-07 |
Family
ID=12579225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4038699A Expired - Fee Related JP4340933B2 (en) | 1999-02-18 | 1999-02-18 | Planetary transmission mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4340933B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010169237A (en) * | 2009-01-26 | 2010-08-05 | Mitsubishi Heavy Ind Ltd | Lubricating device for planetary gear drive |
| WO2012014634A1 (en) * | 2010-07-30 | 2012-02-02 | Ntn株式会社 | Reduction differential gear for electric vehicle |
| JP2012162144A (en) * | 2011-02-04 | 2012-08-30 | Toyota Motor Corp | Lubricating device for power transmission system |
| JP2013053736A (en) * | 2011-09-06 | 2013-03-21 | Honda Motor Co Ltd | Lubrication structure for planetary gear mechanism |
| JP2013137073A (en) * | 2011-12-28 | 2013-07-11 | Honda Motor Co Ltd | Lubrication structure for planetary gear mechanism |
| DE102014115227A1 (en) | 2013-11-26 | 2015-05-28 | Neugart Gmbh | Planetary gear with sun gear and planetary gear and cavity for lubricant |
| US9447863B2 (en) | 2012-10-03 | 2016-09-20 | Honda Motor Co., Ltd. | Lubrication structure for driving force transmission device |
| DE102016222447B3 (en) * | 2016-11-16 | 2018-02-22 | Schaeffler Technologies AG & Co. KG | Planetary gear with flow direction-dependent control of the lubrication of a planetary gearset |
| DE102016222446B3 (en) | 2016-11-16 | 2018-03-01 | Schaeffler Technologies AG & Co. KG | Planetary gear with flow direction-dependent control of the lubrication of a planetary gearset |
| WO2020118335A1 (en) * | 2018-12-13 | 2020-06-18 | Miba Gleitlager Austria Gmbh | Planetary gear set for a wind turbine |
-
1999
- 1999-02-18 JP JP4038699A patent/JP4340933B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010169237A (en) * | 2009-01-26 | 2010-08-05 | Mitsubishi Heavy Ind Ltd | Lubricating device for planetary gear drive |
| WO2012014634A1 (en) * | 2010-07-30 | 2012-02-02 | Ntn株式会社 | Reduction differential gear for electric vehicle |
| JP2012162144A (en) * | 2011-02-04 | 2012-08-30 | Toyota Motor Corp | Lubricating device for power transmission system |
| JP2013053736A (en) * | 2011-09-06 | 2013-03-21 | Honda Motor Co Ltd | Lubrication structure for planetary gear mechanism |
| JP2013137073A (en) * | 2011-12-28 | 2013-07-11 | Honda Motor Co Ltd | Lubrication structure for planetary gear mechanism |
| US9447863B2 (en) | 2012-10-03 | 2016-09-20 | Honda Motor Co., Ltd. | Lubrication structure for driving force transmission device |
| DE102014115227A1 (en) | 2013-11-26 | 2015-05-28 | Neugart Gmbh | Planetary gear with sun gear and planetary gear and cavity for lubricant |
| DE102016222447B3 (en) * | 2016-11-16 | 2018-02-22 | Schaeffler Technologies AG & Co. KG | Planetary gear with flow direction-dependent control of the lubrication of a planetary gearset |
| DE102016222446B3 (en) | 2016-11-16 | 2018-03-01 | Schaeffler Technologies AG & Co. KG | Planetary gear with flow direction-dependent control of the lubrication of a planetary gearset |
| WO2020118335A1 (en) * | 2018-12-13 | 2020-06-18 | Miba Gleitlager Austria Gmbh | Planetary gear set for a wind turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4340933B2 (en) | 2009-10-07 |
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