JP5002413B2 - Pinion shaft mounting structure of planetary gear mechanism - Google Patents

Pinion shaft mounting structure of planetary gear mechanism Download PDF

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JP5002413B2
JP5002413B2 JP2007279734A JP2007279734A JP5002413B2 JP 5002413 B2 JP5002413 B2 JP 5002413B2 JP 2007279734 A JP2007279734 A JP 2007279734A JP 2007279734 A JP2007279734 A JP 2007279734A JP 5002413 B2 JP5002413 B2 JP 5002413B2
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pinion shaft
mounting structure
plate
planetary gear
carrier
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JP2009108891A (en
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孝哉 佐藤
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Subaru Corp
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Fuji Jukogyo KK
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Description

本発明は、遊星歯車機構において、プラネタリギヤが軸着されるピニオンシャフトの回り止め機能、及びこのピニオンシャフトへの潤滑油の導入をガイドする機能が備えられたピニオンシャフト取付構造に関するものである。   The present invention relates to a pinion shaft mounting structure provided with a function of preventing rotation of a pinion shaft on which a planetary gear is mounted and a function of guiding introduction of lubricating oil to the pinion shaft in a planetary gear mechanism.

従来の遊星歯車機構のピニオンピン（ピニオンシャフト）の回り止め機能が備えられた取付構造のものについては、例えば図４に示すようなものがある（特許文献１）。
この取付構造のものにおいては、ピニオンピン１００の一方端部に、当該ピニオンピン１００の軸方向に垂直な方向の嵌入溝１００ａが設けられている。一方、プレート部材１０１は、上述した嵌入溝１００ａに嵌めこまれる嵌入部１０１ａと、キャリヤ１０２の円周２箇所に設けられた、軸方向に凹んでいる凹部１０２ａに向かって突出する突出部１０１ｂとが一体に設けられてリング状をなしており、このようなプレート部材１０１に対し、図４（Ｂ）に示すように、当該プレート部材１０１の嵌入部１０１ａをピニオンピン１００の嵌入溝１００ａに嵌めこみ、当該プレート部材１０１の突出部１０１ｂをキャリヤ１０２の凹部１０２ａに嵌めこんだ後、Ｃリング１０３をキャリヤ１０２の円筒部１０２ｂの内周に設けられた円周溝１０２ｃに嵌めこむことによって、キャリヤ１０２に対してピニオンピン１００が回転方向及び軸方向に固定される。
尚、この取付構造のものにおいては、ピニオンピン１００とキャリヤ１０２との間に配設されるワッシャ１０４，１０５のうちワッシャ１０５に設けられた延在部１０５ａによってキャリヤ１０２のスリット１０２ｄ内部に潤滑油が導入され、遊星歯車機構内部の潤滑が行われる。 An example of a mounting structure having a function of preventing rotation of a pinion pin (pinion shaft) of a conventional planetary gear mechanism is shown in FIG. 4 (Patent Document 1).
In this mounting structure, an insertion groove 100 a in a direction perpendicular to the axial direction of the pinion pin 100 is provided at one end of the pinion pin 100. On the other hand, the plate member 101 includes a fitting portion 101a that is fitted in the fitting groove 100a described above, and a protruding portion 101b that is provided at two circumferential positions of the carrier 102 and protrudes toward the concave portion 102a that is recessed in the axial direction. Are integrally formed to form a ring shape, and the fitting portion 101a of the plate member 101 is fitted into the fitting groove 100a of the pinion pin 100 as shown in FIG. After the protrusion 101b of the plate member 101 is fitted into the recess 102a of the carrier 102, the C ring 103 is fitted into the circumferential groove 102c provided on the inner periphery of the cylindrical portion 102b of the carrier 102, thereby The pinion pin 100 is fixed to the rotation direction and the axial direction with respect to 102.
In this mounting structure, the lubricating oil is provided inside the slit 102d of the carrier 102 by the extending portion 105a provided in the washer 105 out of the washers 104, 105 disposed between the pinion pin 100 and the carrier 102. Is introduced to lubricate the planetary gear mechanism.

しかしながら、上述した従来の回り止め機能を備えたピニオンピン取付構造においては、プレート部材１０１をピニオンピン１００の嵌入溝１００ａに嵌めこむとともに、キャリヤ１０２の凹部１０２ａにも嵌めこむ構造となっており、プレート部材１０１を容易に組み付けることができる構造とは言い難く、また、キャリヤ１０２にも凹部１０２ａを設けなければならないなどの工数を要する煩わしさがある。
そして、この取付構造においては、ワッシャ１０５の延在部１０５ａによって潤滑油が遊星歯車機構内部に導入されるようになっているが、プレート部材１０１にピニオンピン１００への潤滑油の導入をガイドする機能を併せ持たせるような構成とはなっていない。
特開２００３−２４７６２９（第３頁、図１，２） However, in the pinion pin mounting structure having the conventional anti-rotation function described above, the plate member 101 is fitted into the fitting groove 100a of the pinion pin 100 and also fitted into the recess 102a of the carrier 102. It is difficult to say that the plate member 101 can be easily assembled, and there is a need for man-hours such as the carrier 102 having to be provided with a recess 102a.
In this mounting structure, the lubricating oil is introduced into the planetary gear mechanism by the extending portion 105a of the washer 105. However, the introduction of the lubricating oil to the pinion pin 100 is guided to the plate member 101. It is not configured to have functions.
JP 2003-247629 (3rd page, FIGS. 1 and 2)

解決しようとする課題は、組み付けが容易に行える簡便な取付構造でピニオンシャフトの回り止め機能を実現できるようにする点であり、更には、回り止め機能に加えて、ピニオンシャフトへの潤滑油の導入をガイドする機能も併せもつ取付構造にする点である。   The problem to be solved is to achieve a pinion shaft detent function with a simple mounting structure that can be easily assembled. Furthermore, in addition to the detent function, lubricant oil is applied to the pinion shaft. The point is that the mounting structure also has the function of guiding the introduction.

本発明の請求項１に係る遊星歯車機構のピニオンシャフト取付構造は、出力軸に配設されるサンギヤと、このサンギヤの外周に等間隔をなして当該サンギヤに噛合する複数のプラネタリギヤと、これらプラネタリギヤに噛合するリングギヤと、前記プラネタリギヤが回動自在に軸着された複数のピニオンシャフトを前記出力軸の軸心と同一の軸心廻りで回動可能に支持するキャリヤとを備え、前記ピニオンシャフトの一方端側に、当該ピニオンシャフトの回り止め機能を果たすプレートを係合させ、このプレートを前記キャリヤに係止し、又は前記キャリヤに取着される部材で係止するピニオンシャフト取付構造であって、前記係合は、前記ピニオンシャフトの一方端に設けられたフランジ部の外表面に当該ピニオンシャフトの軸心方向に突出する態様で突起部を設けることによって、この突起部の、当該ピニオンシャフトの軸心を含む仮想平面に平行な平面で形成される平面部に、前記プレートの、円周等分に配設される前記ピニオンシャフトの対応位置に設けられた切欠部を合わせて行われるようにしたものであり、これにより、組み付けが容易に行える簡便な取付構造でピニオンシャフトの回り止め機能を実現できる。   A pinion shaft mounting structure for a planetary gear mechanism according to claim 1 of the present invention includes a sun gear disposed on an output shaft, a plurality of planetary gears meshed with the sun gear at equal intervals on the outer periphery of the sun gear, and the planetary gears. A ring gear that meshes with each other, and a carrier that rotatably supports a plurality of pinion shafts on which the planetary gears are rotatably mounted about the same axis as the axis of the output shaft. A pinion shaft mounting structure in which a plate that functions to prevent rotation of the pinion shaft is engaged with one end side, and the plate is locked to the carrier or locked by a member attached to the carrier. The engagement projects in the axial direction of the pinion shaft on the outer surface of a flange portion provided at one end of the pinion shaft. By providing the protrusions in such a manner, the plate is equally arranged on the circumference of the plate on a plane portion formed by a plane parallel to a virtual plane including the axis of the pinion shaft. The notch portions provided at the corresponding positions of the pinion shaft are combined to achieve the pinion shaft rotation prevention function with a simple mounting structure that can be easily assembled.

本発明の請求項２に係る遊星歯車機構のピニオンシャフト取付構造においては、前記プレートは、前記切欠部を外周に有する円環状の部材であって、この円環状部材の内周穴を含む部位が、先端が切り落とされた円錐形状の当該先端面に位置されるように円錐台状に折曲され、前記係合に際して当該先端面側が前記ピニオンシャフトの前記外表面に対し突設される態様で配置される部材であり、これにより、上記回り止め機能に加えて、ピニオンシャフトへの潤滑油の導入をガイドする機能も併せもつようにすることができるので、潤滑油の導入による機能維持が図れることは言うまでもなく、強制潤滑のように、例えばキャリヤなどに油路を設ける必要がなく、構造の簡素化やコスト低減化などが図れる。   In the pinion shaft mounting structure for a planetary gear mechanism according to claim 2 of the present invention, the plate is an annular member having the cutout portion on the outer periphery, and a portion including the inner peripheral hole of the annular member is provided. The tip is bent in a truncated cone shape so as to be positioned on the truncated cone-shaped tip surface, and arranged in such a manner that the tip surface side protrudes from the outer surface of the pinion shaft during the engagement. As a result, in addition to the anti-rotation function, it can also have a function of guiding the introduction of the lubricating oil into the pinion shaft, so that the function can be maintained by introducing the lubricating oil. Needless to say, unlike forced lubrication, it is not necessary to provide an oil passage in the carrier, for example, and the structure can be simplified and the cost can be reduced.

本発明の遊星歯車機構のピニオンシャフト取付構造は、組み付けが容易に行える簡便な取付構造でピニオンシャフトの回り止め機能を実現できる利点があり、更には、回り止め機能に加えて、ピニオンシャフトへの潤滑油の導入をガイドする機能も併せもつようにすることができる利点がある。   The pinion shaft mounting structure of the planetary gear mechanism of the present invention has an advantage that a pinion shaft rotation preventing function can be realized with a simple mounting structure that can be easily assembled. Further, in addition to the rotation stopping function, the pinion shaft mounting structure There is an advantage that it is possible to have a function of guiding the introduction of the lubricating oil.

本発明の実施の形態に係る遊星歯車機構のピニオンシャフト取付構造を図１〜３を参照して説明する。
本ピニオンシャフト取付構造は、図１に示すような無段変速機用前後進切換装置としての遊星歯車機構１におけるピニオンシャフトに適用したものである。
本遊星歯車機構１においては、図１に示すように、当該遊星歯車機構１の入力軸２がトルクコンバータ（図示せず）の出力軸に連結され、この入力軸２には、前進クラッチドラム３が一体にして取り付けられている。そして、この前進クラッチドラム３の内側に位置して当該前進クラッチドラム３に対向する態様でクラッチハブ４が配設されており、このクラッチハブ４の外周スプラインに係止された複数のクラッチプレートと、上記前進クラッチドラム３の内周スプラインに係止された複数のクラッチプレートとが適宜な隙間間隔で交互に配置される。このようなクラッチハブ４は本遊星歯車機構１の出力軸５に当該出力軸５と一体に回転するように支持されたサンギヤ６に一体化して取り付けられている。そして、このサンギヤ６には、本実施の形態では、円周１２０゜の等間隔をなして３つのプラネタリギヤ７が噛合するとともに、これらプラネタリギヤ７に上記前進クラッチドラム３の内周スプラインに係止されたリングギヤ８が噛合している。また、各プラネタリギヤ７は、ピニオンシャフト１０にニードルローラベアリングを介して回動自在にそれぞれ軸着される一方、ピニオンシャフト１０は、出力軸５の軸心と同一の軸心廻りで回動可能に、後に詳述するような態様でキャリヤ９に支持される。かかるキャリヤ９の外周スプラインには複数のクラッチプレートが係止されており、これらのクラッチプレートとケーシング１２の内周スプラインに係止された複数のクラッチプレートとが適宜な隙間間隔で交互に配置される。 A pinion shaft mounting structure for a planetary gear mechanism according to an embodiment of the present invention will be described with reference to FIGS.
This pinion shaft mounting structure is applied to a pinion shaft in a planetary gear mechanism 1 as a forward / reverse switching device for a continuously variable transmission as shown in FIG.
In the planetary gear mechanism 1, as shown in FIG. 1, an input shaft 2 of the planetary gear mechanism 1 is connected to an output shaft of a torque converter (not shown), and the forward clutch drum 3 is connected to the input shaft 2. Are attached together. A clutch hub 4 is disposed inside the forward clutch drum 3 so as to face the forward clutch drum 3, and a plurality of clutch plates locked to the outer peripheral splines of the clutch hub 4 and The plurality of clutch plates locked to the inner peripheral spline of the forward clutch drum 3 are alternately arranged at appropriate gap intervals. Such a clutch hub 4 is integrally attached to a sun gear 6 that is supported on the output shaft 5 of the planetary gear mechanism 1 so as to rotate integrally with the output shaft 5. In this embodiment, three planetary gears 7 are engaged with the sun gear 6 at equal intervals of 120 ° in the circumference, and are engaged with the planetary gears 7 on the inner peripheral spline of the forward clutch drum 3. The ring gear 8 is engaged. Each planetary gear 7 is pivotally attached to the pinion shaft 10 via a needle roller bearing, while the pinion shaft 10 is rotatable about the same axis as the axis of the output shaft 5. Then, it is supported by the carrier 9 in the manner described in detail later. A plurality of clutch plates are engaged with the outer peripheral spline of the carrier 9, and the clutch plates and the plurality of clutch plates engaged with the inner peripheral spline of the casing 12 are alternately arranged at appropriate gap intervals. The

このような遊星歯車機構１において、前進段については、前進クラッチドラム３に形成されるシリンダ内のクラッチピストン１１がこのシリンダ内に供給される油圧によって図１において右方向に移動し、これにより前進クラッチドラム３のクラッチプレートとクラッチハブ４のクラッチプレートとが接続して入力軸２の回転がクラッチハブ４と一体化されたサンギヤ６を介して出力軸５に伝達されて実現される。一方、後進段については、ケーシング１２に形成されるシリンダ内のクラッチピストン１３がこのシリンダ内に供給される油圧によって図１において左方向に移動し、これによりケーシング１２のクラッチプレートとキャリヤ９のクラッチプレートとが接続して当該キャリヤ９の回転が停止され、即ちプラネタリギヤ７の公転が停止され、その結果、入力軸２の回転は、リングギヤ８、プラネタリギヤ７、サンギヤ６を介して出力軸５に伝達されて実現される。   In such a planetary gear mechanism 1, in the forward gear, the clutch piston 11 in the cylinder formed in the forward clutch drum 3 is moved rightward in FIG. 1 by the hydraulic pressure supplied into the cylinder, thereby moving forward. The clutch plate of the clutch drum 3 and the clutch plate of the clutch hub 4 are connected, and the rotation of the input shaft 2 is transmitted to the output shaft 5 via the sun gear 6 integrated with the clutch hub 4. On the other hand, for the reverse gear, the clutch piston 13 in the cylinder formed in the casing 12 is moved leftward in FIG. 1 by the hydraulic pressure supplied into the cylinder, whereby the clutch plate of the casing 12 and the clutch of the carrier 9 are moved. The rotation of the carrier 9 is stopped by connecting with the plate, that is, the revolution of the planetary gear 7 is stopped. As a result, the rotation of the input shaft 2 is transmitted to the output shaft 5 via the ring gear 8, the planetary gear 7 and the sun gear 6. To be realized.

次に、このような遊星歯車機構１のピニオンシャフト１０に適用した本ピニオンシャフト取付構造について説明する。
本ピニオンシャフト取付構造は、図１に加え図２，３にも示すように、ピニオンシャフト１０の一方端（本実施の形態では後端）側に当該ピニオンシャフト１０の回り止め機能、及びピニオンシャフトへの潤滑油の導入をガイドする機能も併せもつプレート１４を配置し、本実施の形態では、このプレート１４をキャリヤ９に取着されるスナップリング（部材）１５で係止するというもので、組み付けが容易に行える簡便な取付構造をなしている。
かかる取付構造を詳細に説明する。
まず、ピニオンシャフト１０は、図２（Ｂ）に詳細に示すように、短尺な円筒状部材で、その後端側にはフランジ部１０ａが設けられ、このフランジ部１０ａの外表面１０ａ１（この面が当該ピニオンシャフト１０の後端面となる）には、当該ピニオンシャフト１０の軸心方向に突出する態様で、本実施の形態では、フランジ部１０ａの外周面に連続する円弧面で形成される円弧面部１６ａと、当該ピニオンシャフト１０の軸心を含む仮想平面に平行な平面で形成される平面部１６ｂとで構成された略三日月形状の突起部１６が設けられている（図３参照）。また、ピニオンシャフト１０の軸心には、当該ピニオンシャフト１０の長手方向の略中央から当該ピニオンシャフト１０の後端面中央に凹設された六角皿状溝に連通する態様で潤滑油路１０ｂが設けられ、更に、当該ピニオンシャフト１０の長手方向の略中央には、上記潤滑油路１０ｂに直交するとともに、当該ピニオンシャフト１０の外周面を貫通する潤滑油路１０ｃが設けられている。 Next, the present pinion shaft mounting structure applied to the pinion shaft 10 of the planetary gear mechanism 1 will be described.
As shown in FIGS. 2 and 3 in addition to FIG. 1, the present pinion shaft mounting structure has a function of preventing rotation of the pinion shaft 10 on one end (rear end in the present embodiment) side of the pinion shaft 10, and the pinion shaft. In this embodiment, a plate 14 having a function of guiding the introduction of lubricating oil to the carrier 9 is disposed, and the plate 14 is locked by a snap ring (member) 15 attached to the carrier 9. It has a simple mounting structure that can be easily assembled.
This mounting structure will be described in detail.
First, as shown in detail in FIG. 2B, the pinion shaft 10 is a short cylindrical member, and a flange portion 10a is provided on the rear end side thereof, and an outer surface 10a 1 (this surface) of the flange portion 10a is provided. Is a rear end surface of the pinion shaft 10), and is an arc formed by an arc surface that is continuous with the outer peripheral surface of the flange portion 10 a in this embodiment. There is provided a substantially crescent-shaped protrusion 16 composed of a surface portion 16a and a plane portion 16b formed by a plane parallel to a virtual plane including the axis of the pinion shaft 10 (see FIG. 3). Further, a lubricating oil passage 10b is provided at the axial center of the pinion shaft 10 in such a manner that it communicates with a hexagonal dish groove recessed from the approximate center in the longitudinal direction of the pinion shaft 10 at the center of the rear end surface of the pinion shaft 10. Furthermore, a lubricating oil passage 10 c that is orthogonal to the lubricating oil passage 10 b and penetrates the outer peripheral surface of the pinion shaft 10 is provided at a substantially center in the longitudinal direction of the pinion shaft 10.

次に、プレート１４は、図２（Ａ）、図３に示すように、その肉厚が、本実施の形態では、突起部１６の、フランジ部１０ａの外表面１０ａ１からの高さ長とほぼ同一の円環状部材であり、この円環状部材の外周に切欠部１４ａが設けられ、この円環状部材の内周穴１４ｄを含む部位が、先端が切り落とされた円錐形状の当該先端面に位置されるように円錐台状に折曲加工されたものである。具体的には、切欠部１４ａは、円周１２０゜の等間隔をなしてキャリヤ９に支持されている３つのピニオンシャフト１０における突起部１６の平面部１６ｂにそれぞれ係合するように設けられ、ピニオンシャフト１０の回り止め機能を果たす。また、この円環状部材の中心と切欠部１４ａの中点１４ａ１とを結ぶ直線を半径とする円径より小さい円径位置を第１折曲部１４ｂとし、当該円環の内周穴１４ｄの穴径より適宜に大きい円径位置を第２折曲部１４ｃとして、第１折曲部１４ｂと第２折曲部１４ｃと間で先端が切り落とされた円錐形状をなすように、即ち、円錐台状をなすように折曲されている。かかるプレート１４は、ピニオンシャフト１０の上記外表面１０ａ１に配置されるときは、この円錐台状の先端面側がピニオンシャフト１０の上記外表面１０ａ１に対し突設される態様で配置される。そして、プレート１４は、この先端面の内周穴１４ｄを介して出力軸５などの回転によって飛沫された潤滑油をキャッチし、ピニオンシャフト１０の潤滑油路（軸心孔）１０ｂ，１０ｃを通ってニードルローラベアリングなどに導入するガイド機能をも併せ持つものである。したがって、潤滑油の導入による機能維持が図れ、また、強制潤滑のように、例えばキャリヤ９などに油路を設ける必要がないので、構造の簡素化やコスト低減などの利点がある。 Next, as shown in FIGS. 2A and 3, the thickness of the plate 14 is, in this embodiment, the height of the protrusion 16 from the outer surface 10 a 1 of the flange portion 10 a. It is a substantially identical annular member, and a notch portion 14a is provided on the outer periphery of the annular member, and a portion including the inner peripheral hole 14d of the annular member is located on the conical tip surface where the tip is cut off. As shown, it is bent into a truncated cone shape. Specifically, the notches 14a are provided so as to engage with the flat portions 16b of the protrusions 16 of the three pinion shafts 10 supported by the carrier 9 at equal intervals of 120 ° in the circumference, respectively. It serves to prevent the pinion shaft 10 from rotating. Further, the annular member around the midpoint 14a 1 and smaller circle diameter position than circle diameter to the straight radial line connecting the notch portion 14a and the first bent portion 14b, the inner peripheral hole 14d of the circular ring A circular position that is appropriately larger than the hole diameter is defined as a second bent portion 14c so that the tip is cut off between the first bent portion 14b and the second bent portion 14c, that is, a truncated cone. It is bent to form a shape. When the plate 14 is arranged on the outer surface 10 a 1 of the pinion shaft 10, the plate 14 is arranged in such a manner that the front end surface side of the truncated cone protrudes from the outer surface 10 a 1 of the pinion shaft 10. Then, the plate 14 catches the lubricating oil splashed by the rotation of the output shaft 5 or the like through the inner peripheral hole 14d on the tip surface, and passes through the lubricating oil passages (axial center holes) 10b and 10c of the pinion shaft 10. It also has a guide function to be introduced into needle roller bearings. Accordingly, the function can be maintained by introducing the lubricating oil, and there is no need to provide an oil passage in the carrier 9 or the like as in the case of forced lubrication, and there are advantages such as simplification of the structure and cost reduction.

本ピニオンシャフト取付構造の組み付け方を説明すると、ピニオンシャフト１０を、図２（Ａ）に示すように、キャリヤ９の所定ピニオンシャフト軸受穴に挿入する。この挿入に際しては当該ピニオンシャフト１０のフランジ部１０ａがキャリヤ９の、所定ピニオンシャフト軸受穴の挿入側端面に当接するまで挿入すればよい。尚、この挿入に際してはピニオンシャフト１０にニードルローラベアリングを介してプラネタリギヤ７が軸着されるようにすることはもちろんである。しかる後、図３に示すように、プレート１４をピニオンシャフト１０の上記外表面１０ａ１に配置する。この配置に際しては、このピニオンシャフト１０の突起部１６の平面部１６ｂに、プレート１４の切欠部１４ａが係合するようにして配置するのみでよい。尚、プレート１４の上記円錐台状の先端面側がピニオンシャフト１０の上記外表面１０ａ１に対し突設される態様で配置されることは言うまでもない。そして、このプレート１４を、本実施の形態では、キャリヤ９の所定凹溝に取着されるスナップリング１５で係止すればよい。したがって、組み付けが容易に行える簡便な取付構造をなしている。 The method of assembling the present pinion shaft mounting structure will be described. The pinion shaft 10 is inserted into a predetermined pinion shaft bearing hole of the carrier 9 as shown in FIG. In this insertion, the pinion shaft 10 may be inserted until the flange portion 10a of the pinion shaft 10 comes into contact with the insertion side end surface of the predetermined pinion shaft bearing hole of the carrier 9. Needless to say, the planetary gear 7 is pivotally attached to the pinion shaft 10 via a needle roller bearing. Thereafter, as shown in FIG. 3, the plate 14 is disposed on the outer surface 10 a 1 of the pinion shaft 10. In this arrangement, it is only necessary that the notch portion 14a of the plate 14 is engaged with the flat portion 16b of the projection portion 16 of the pinion shaft 10. Incidentally, it is needless to say that the truncated cone-shaped front-end surface side of the plate 14 are arranged in a manner that is projected against the outer surface 10a 1 of the pinion shaft 10. And in this Embodiment, what is necessary is just to latch this plate 14 with the snap ring 15 attached to the predetermined | prescribed ditch | groove of the carrier 9. FIG. Therefore, it has a simple mounting structure that can be easily assembled.

ところで、プレート１４を係止する場合、上記実施の形態では、当該プレート１４をキャリヤ９に取着されるスナップリング１５で係止する方法を採ったが、これに限ることなく、例えばプレート１４の、切欠部１４ａが設けられていない外周面をキャリヤ９に圧入する方法で係止してもよく、また、切欠部１４ａが設けられていない外周面に凸部を設け、この凸部をキャリヤ９に設けられた凹部に嵌め込む方法で係止してもよいことはもちろんである。   By the way, when the plate 14 is locked, the method of locking the plate 14 with the snap ring 15 attached to the carrier 9 has been adopted in the above embodiment. The outer peripheral surface not provided with the notch 14a may be locked by a method of press-fitting into the carrier 9, and a convex portion is provided on the outer peripheral surface not provided with the notch 14a. Of course, it may be locked by a method of fitting in a recess provided in the.

本発明の遊星歯車機構のピニオンシャフト取付構造は、組み付けが容易に行える簡便な取付構造でピニオンシャフトの回り止め機能、更には、ピニオンシャフトへの潤滑油の導入をガイドする機能をも併せもち、無段変速機用前後進切換装置の遊星歯車機構のみならず、自動変速機などの遊星歯車機構にも用いることができ、広範囲での利用価値が高いと言える。   The pinion shaft mounting structure of the planetary gear mechanism of the present invention has a simple mounting structure that can be easily assembled, and has a function of preventing rotation of the pinion shaft, and also a function of guiding the introduction of lubricating oil to the pinion shaft, It can be used not only for a planetary gear mechanism of a continuously variable transmission forward / reverse switching device, but also for a planetary gear mechanism such as an automatic transmission, and can be said to have high utility value in a wide range.

本発明の実施の形態に係る遊星歯車機構のピニオンシャフト取付構造を示す構成図である。It is a block diagram which shows the pinion shaft attachment structure of the planetary gear mechanism which concerns on embodiment of this invention. 図１のピニオンシャフト取付構造を示す拡大詳細図である。FIG. 2 is an enlarged detail view showing the pinion shaft mounting structure of FIG. 1. 図２の矢印方向から視た側面図である。It is the side view seen from the arrow direction of FIG. 従来のピニオンシャフト取付構造を示す構成図である。It is a block diagram which shows the conventional pinion shaft attachment structure.

符号の説明Explanation of symbols

１ 遊星歯車機構
２ シリンダヘッド
６ サンギヤ
７ プラネタリギヤ
８ リングギヤ
９ キャリヤ
１０ ピニオンシャフト
１０ａ フランジ部
１０ａ１ 外表面
１４ プレート
１４ａ 切欠部
１４ｄ 内周穴
１６ 突起部
１６ｂ 平面部 DESCRIPTION OF SYMBOLS 1 Planetary gear mechanism 2 Cylinder head 6 Sun gear 7 Planetary gear 8 Ring gear 9 Carrier 10 Pinion shaft 10a Flange part 10a 1 Outer surface 14 Plate 14a Notch part 14d Inner peripheral hole 16 Protrusion part 16b Plane part

Claims (2)

出力軸に配設されるサンギヤと、このサンギヤの外周に等間隔をなして当該サンギヤに噛合する複数のプラネタリギヤと、これらプラネタリギヤに噛合するリングギヤと、前記プラネタリギヤが回動自在に軸着された複数のピニオンシャフトを前記出力軸の軸心と同一の軸心廻りで回動可能に支持するキャリヤとを備え、前記ピニオンシャフトの一方端側に、当該ピニオンシャフトの回り止め機能を果たすプレートを係合させ、このプレートを前記キャリヤに係止し、又は前記キャリヤに取着される部材で係止するピニオンシャフト取付構造であって、
前記係合は、前記ピニオンシャフトの一方端に設けられたフランジ部の外表面に当該ピニオンシャフトの軸心方向に突出する態様で突起部を設けることによって、この突起部の、当該ピニオンシャフトの軸心を含む仮想平面に平行な平面で形成される平面部に、前記プレートの、円周等分に配設される前記ピニオンシャフトの対応位置に設けられた切欠部を合わせて行われることを特徴とする遊星歯車機構のピニオンシャフト取付構造。 A sun gear disposed on the output shaft, a plurality of planetary gears meshed with the sun gear at equal intervals on the outer periphery of the sun gear, a ring gear meshed with the planetary gears, and a plurality of shaft gears rotatably mounted on the planetary gears And a carrier that supports the pinion shaft so as to be rotatable about the same axis as the output shaft, and a plate that functions to prevent rotation of the pinion shaft is engaged with one end of the pinion shaft. A pinion shaft mounting structure for locking the plate to the carrier, or locking the plate with a member attached to the carrier,
The engagement is performed by providing a protrusion on the outer surface of the flange portion provided at one end of the pinion shaft in a manner of protruding in the axial direction of the pinion shaft. The flat portion formed by a plane parallel to the virtual plane including the center is combined with a notch portion provided at a corresponding position of the pinion shaft arranged on the circumference equally of the plate. The pinion shaft mounting structure of the planetary gear mechanism. 前記プレートは、前記切欠部を外周に有する円環状の部材であって、この円環状部材の内周穴を含む部位が、先端が切り落とされた円錐形状の当該先端面に位置されるように円錐台状に折曲され、前記係合に際して当該先端面側が前記ピニオンシャフトの前記外表面に対し突設される態様で配置される部材であることを特徴とする請求項１に記載の遊星歯車機構のピニオンシャフト取付構造。   The plate is an annular member having the cutout portion on the outer periphery, and the portion including the inner peripheral hole of the annular member is positioned so as to be positioned on the tip surface of the cone shape with the tip cut off. 2. The planetary gear mechanism according to claim 1, wherein the planetary gear mechanism is a member that is bent in a trapezoidal shape and is arranged in a manner in which the tip end surface side protrudes from the outer surface of the pinion shaft during the engagement. Pinion shaft mounting structure.
JP2007279734A 2007-10-29 2007-10-29 Pinion shaft mounting structure of planetary gear mechanism Expired - Fee Related JP5002413B2 (en)

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