JP5835979B2 - Power transmission device - Google Patents

Power transmission device Download PDF

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JP5835979B2
JP5835979B2 JP2011160051A JP2011160051A JP5835979B2 JP 5835979 B2 JP5835979 B2 JP 5835979B2 JP 2011160051 A JP2011160051 A JP 2011160051A JP 2011160051 A JP2011160051 A JP 2011160051A JP 5835979 B2 JP5835979 B2 JP 5835979B2
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pinion
transmission device
power transmission
lubricating oil
case
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JP2013024334A (en
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拓人 川田
拓人 川田
達也 若林
達也 若林
博仁 関口
博仁 関口
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Ｇｋｎドライブラインジャパン株式会社
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Description

本発明は、車両に適用される動力伝達装置に関する。   The present invention relates to a power transmission device applied to a vehicle.

従来、動力伝達装置としては、ケースと、このケースに回転可能に収容され一端側にリングギヤと噛み合うピニオンが設けられ他端側に回転部材に連結される連結部が設けられた軸部材としての出力軸とを備えたものが知られている（例えば、特許文献１参照）。   Conventionally, as a power transmission device, an output as a shaft member provided with a case and a pinion that is rotatably accommodated in the case and meshes with a ring gear on one end side and a connecting portion that is connected to a rotating member on the other end side The thing provided with the axis | shaft is known (for example, refer patent document 1).

この動力伝達装置では、ケースの肉部にリングギヤとピニオンとの噛み合い部側から出力軸の連結部側まで登り勾配となるオイル供給通路が設けられている。このオイル供給通路は、リングギヤの回転によって潤滑油が内部に取り込まれ、出力軸の回転によって内部に取り込まれた潤滑油が排出されて連結部側に潤滑油を供給している。   In this power transmission device, an oil supply passage is provided at the flesh portion of the case so as to rise up from the meshing portion side of the ring gear and the pinion to the connecting portion side of the output shaft. In the oil supply passage, the lubricating oil is taken into the interior by the rotation of the ring gear, and the lubricating oil taken in by the rotation of the output shaft is discharged to supply the lubricating oil to the connecting portion side.

特開２０１１−５８６１５号公報JP 2011-58615 A

ところで、上記のような動力伝達装置では、オイル供給通路のようなオイル孔の潤滑油を取り込む入口側が、ピニオンの外径よりも外側に位置されている。このため、ケースにオイル孔の入口側を設けるだけの肉厚が必要となり、ケースが大型化していた。   By the way, in the power transmission device as described above, the inlet side for taking in the lubricating oil in the oil hole such as the oil supply passage is located outside the outer diameter of the pinion. For this reason, the case has to be thick enough to provide the inlet side of the oil hole in the case, and the case has been enlarged.

このケースの大型化を避けるために、オイル孔の入口をリングギヤとピニオンとの噛み合い部の背面側に位置させることがある。この場合、ピニオンの噛み合い部の背面側に位置するケースの環状の対向面に潤滑油が流入する溝部を設け、この溝部内にオイル孔の入口を設けている。   In order to avoid an increase in size of the case, the inlet of the oil hole may be positioned on the back side of the meshing portion between the ring gear and the pinion. In this case, a groove portion into which the lubricating oil flows is provided on the annular facing surface of the case located on the back side of the meshing portion of the pinion, and an oil hole inlet is provided in the groove portion.

しかしながら、ピニオンの回転によってケースの対向面を流動する潤滑油が溝部に流入されないことがあり、潤滑油がオイル孔に到達することができず、軸部材の連結部側に潤滑油を十分に供給することができない可能性があった。   However, the lubricating oil that flows on the opposite surface of the case due to the rotation of the pinion may not flow into the groove, so that the lubricating oil cannot reach the oil hole, and the lubricating oil is sufficiently supplied to the connecting part side of the shaft member There was a possibility that could not.

そこで、この発明は、ピニオンの噛み合い部の背面側にオイル孔が設けられた動力伝達装置において、オイル孔に潤滑油を流通させ、軸部材の連結部側に潤滑油を供給させることができる動力伝達装置の提供を目的としている。   Accordingly, the present invention provides a power transmission device in which an oil hole is provided on the back side of the meshing portion of the pinion, and the power that allows the lubricating oil to flow through the oil hole and supply the lubricating oil to the connecting portion side of the shaft member. The purpose is to provide a transmission device.

本発明は、ケースと、このケースに回転可能に収容され一端側にリングギヤと噛み合うピニオンが設けられ他端側に回転部材に連結される連結部が設けられた軸部材とを備え、前記ケースには、前記ピニオンの噛み合い部の背面側に環状の対向面が設けられ、前記対向面には、潤滑油が流入する溝部が設けられ、前記溝部には、前記ケースの肉部に前記ピニオン側から前記連結部側へ潤滑油を供給するオイル孔が設けられた動力伝達装置であって、前記対向面には、前記溝部の前記オイル孔側とは周方向の反対側の側壁として設けられ前記ピニオンの一方向への回転時に前記対向面に沿って流動する潤滑油を前記溝部に流入させる第１の壁部と、前記溝部の外周側で前記第１の壁部と前記オイル孔との周方向間に設けられ前記ピニオンの他方向への回転時に前記対向面に沿って流動する潤滑油と当接し前記溝部に流入させる第２の壁部とが設けられていることを特徴とする。
The present invention includes a case and a shaft member provided rotatably in the case and provided with a pinion that engages with the ring gear on one end side and a connecting portion that is connected to the rotation member on the other end side. Is provided with an annular facing surface on the back side of the meshing portion of the pinion, a groove portion into which lubricating oil flows is provided on the facing surface, and the groove portion has a meat portion of the case from the pinion side. A power transmission device provided with an oil hole for supplying lubricating oil to the connecting portion side, wherein the pinion is provided on the opposite surface as a side wall opposite to the oil hole side of the groove portion in the circumferential direction. A first wall portion for allowing lubricating oil flowing along the facing surface to flow into the groove portion when rotating in one direction, and a circumferential direction of the first wall portion and the oil hole on the outer peripheral side of the groove portion the other of the pinions disposed between Characterized in that the lubricating oil flowing along the opposing surface during the rotation and a second wall portion to flow in contact the groove is provided to.

この動力伝達装置では、対向面に設けられた第１の壁部によって、ピニオンの一方向への回転時に対向面に沿って流動する潤滑油を溝部に流入させることができると共に、対向面に設けられた第２の壁部によって、ピニオンの他方向への回転時に対向面に沿って流動する潤滑油を溝部に流入させることができる。   In this power transmission device, the first wall portion provided on the facing surface allows the lubricating oil flowing along the facing surface to flow into the groove when rotating in one direction of the pinion, and is provided on the facing surface. By the formed second wall portion, the lubricating oil that flows along the facing surface when the pinion rotates in the other direction can flow into the groove portion.

このため、第１の壁部と第２の壁部とによって、ピニオンの正逆方向へのいずれの回転時にも溝部に潤滑油を流入させることができ、オイル孔に潤滑油を導入させることができる。   For this reason, the first wall portion and the second wall portion allow the lubricating oil to flow into the groove during any rotation of the pinion in the forward or reverse direction, and allows the lubricating oil to be introduced into the oil hole. it can.

従って、このような動力伝達装置では、ピニオンの噛み合い部の背面側にオイル孔が設けられた動力伝達装置において、オイル孔に潤滑油を流通させ、軸部材の連結部側に潤滑油を供給させることができる。   Accordingly, in such a power transmission device, in the power transmission device in which the oil hole is provided on the back side of the meshing portion of the pinion, the lubricating oil is circulated through the oil hole and the lubricating oil is supplied to the connecting portion side of the shaft member. be able to.

本発明によれば、ピニオンの噛み合い部の背面側にオイル孔が設けられた動力伝達装置において、オイル孔に潤滑油を流通させ、軸部材の連結部側に潤滑油を供給させることができる動力伝達装置を提供することができるという効果を奏する。   According to the present invention, in the power transmission device in which the oil hole is provided on the back side of the meshing portion of the pinion, the power that allows the lubricating oil to flow through the oil hole and supply the lubricating oil to the connecting portion side of the shaft member. There exists an effect that a transmission device can be provided.

本発明の実施の形態に係る動力伝達装置が搭載された車両の動力系の概略図である。It is the schematic of the power system of the vehicle by which the power transmission device which concerns on embodiment of this invention is mounted. 本発明の実施の形態に係る動力伝達装置の断面図である。It is sectional drawing of the power transmission device which concerns on embodiment of this invention. 本発明の実施の形態に係る動力伝達装置のケースの分割部の斜視図である。It is a perspective view of the division part of the case of the power transmission device concerning an embodiment of the invention. （ａ）は本発明の実施の形態に係る動力伝達装置のピニオンの一方向への回転時の分割部の上面図である。（ｂ）は本発明の実施の形態に係る動力伝達装置のピニオンの他方向への回転時の分割部の上面図である。(A) is a top view of the division | segmentation part at the time of rotation to the one direction of the pinion of the power transmission device which concerns on embodiment of this invention. (B) is a top view of the division | segmentation part at the time of rotation to the other direction of the pinion of the power transmission device which concerns on embodiment of this invention.

まず、図１を用いて本発明の実施の形態に係る動力伝達装置が適用される車両の動力系の一例について説明する。   First, an example of a vehicle power system to which a power transmission device according to an embodiment of the present invention is applied will be described with reference to FIG.

図１に示すように、車両の動力系は、エンジンや電動モータなどの駆動源１０１と、変速機構としてのトランスミッション１０３と、前輪側の左右輪の差動を許容するフロントデフ１０５と、前車軸１０７，１０９と、前輪１１１，１１３と、動力伝達装置１と、プロペラシャフト１１５と、前輪側から後輪側へ伝達される駆動トルクを制御可能に断続する断続機構１１７と、後輪側の左右輪の差動を許容するリヤデフ１１９と、後車軸１２１，１２３と、後輪１２５，１２７などから構成されている。   As shown in FIG. 1, the power system of the vehicle includes a drive source 101 such as an engine or an electric motor, a transmission 103 as a speed change mechanism, a front differential 105 that allows differential of the left and right wheels on the front wheel side, and a front axle. 107, 109, front wheels 111, 113, power transmission device 1, propeller shaft 115, intermittent mechanism 117 that intermittently controls drive torque transmitted from the front wheel side to the rear wheel side, and left and right of the rear wheel side The rear differential 119 that allows wheel differentials, rear axles 121 and 123, rear wheels 125 and 127, and the like.

このように構成された車両の動力系では、駆動源１０１の駆動トルクがトランスミッション１０３を介してフロントデフ１０５に伝達される。このフロントデフ１０５に伝達された駆動トルクは、前車軸１０７，１０９を介して前輪１１１，１１３に配分されると共に、フロントデフ１０５に連結された中空軸３７を介して動力伝達装置１に伝達される。   In the vehicle power system configured as described above, the driving torque of the driving source 101 is transmitted to the front differential 105 via the transmission 103. The driving torque transmitted to the front differential 105 is distributed to the front wheels 111 and 113 via the front axles 107 and 109, and is transmitted to the power transmission device 1 via the hollow shaft 37 connected to the front differential 105. The

この動力伝達装置１に伝達された駆動トルクは、方向変換ギヤ組３９で方向変換されてプロペラシャフト１１５を介して断続機構１１７に伝達される。この断続機構１１７に伝達された駆動トルクは、断続機構１１７が接続されるとリヤデフ１１９に伝達されて後車軸１２１，１２３から後輪１２５，１２７に配分され、車両は前後輪駆動の四輪駆動状態になる。また、断続機構１１７の接続が解除されると、車両は前輪駆動の二輪駆動状態になる。以下、図２〜図４を用いて本発明の実施の形態に係る動力伝達装置について説明する。   The driving torque transmitted to the power transmission device 1 is direction-changed by the direction-changing gear set 39 and is transmitted to the intermittent mechanism 117 via the propeller shaft 115. When the intermittent mechanism 117 is connected, the driving torque transmitted to the intermittent mechanism 117 is transmitted to the rear differential 119 and distributed from the rear axles 121 and 123 to the rear wheels 125 and 127, and the vehicle is driven by the front and rear wheels. It becomes a state. Further, when the connection of the intermittent mechanism 117 is released, the vehicle enters a two-wheel drive state of front wheel drive. Hereinafter, the power transmission device according to the embodiment of the present invention will be described with reference to FIGS.

本実施の形態に係る動力伝達装置１は、ケース３と、このケース３に回転可能に収容され一端側にリングギヤ５と噛み合うピニオン７が設けられ他端側にプロペラシャフト１１５（図１参照）の連結部となる回転部材１１６に連結される連結部９が設けられた軸部材１１とを備えている。   The power transmission device 1 according to the present embodiment includes a case 3 and a pinion 7 that is rotatably accommodated in the case 3 and meshes with the ring gear 5 on one end side, and a propeller shaft 115 (see FIG. 1) on the other end side. And a shaft member 11 provided with a connecting portion 9 connected to a rotating member 116 serving as a connecting portion.

また、ケース３には、ピニオン７の噛み合い部の背面側に環状の対向面１３が設けられ、対向面１３には、潤滑油が流入する溝部１５が設けられ、溝部１５には、ケース３の肉部にピニオン７側から連結部９側まで連通され溝部１５に流入した潤滑油を流通して連結部９側に潤滑油を供給するオイル孔１７が設けられている。   In addition, the case 3 is provided with an annular facing surface 13 on the back side of the meshing portion of the pinion 7, and the facing surface 13 is provided with a groove portion 15 into which lubricating oil flows. An oil hole 17 is provided in the meat portion from the pinion 7 side to the connecting portion 9 side, and the lubricating oil flowing into the groove portion 15 is circulated to supply the lubricating oil to the connecting portion 9 side.

そして、対向面１３には、ピニオン７の一方向への回転時に対向面１３に沿って流動する潤滑油を溝部１５に流入させる第１の壁部１９と、ピニオン７の他方向への回転時に溝部１５の外周側で第１の壁部１９とオイル孔１７との周方向間に設けられ対向面１３に沿って流動する潤滑油と当接し溝部１５に流入させる第２の壁部２１とが設けられている。   The opposing surface 13 includes a first wall portion 19 that allows the lubricating oil flowing along the opposing surface 13 to flow into the groove portion 15 when rotating the pinion 7 in one direction, and a pinion 7 when rotating in the other direction. A second wall portion 21 that is provided between the first wall portion 19 and the oil hole 17 on the outer peripheral side of the groove portion 15 and abuts against the lubricating oil that flows along the facing surface 13 and flows into the groove portion 15. Is provided.

なお、ここでは、ピニオン７の一方向への回転を図４（ａ）に示すような右回転とし、ピニオン７の他方向への回転を図４（ｂ）に示すような左回転とする。   Here, the rotation of the pinion 7 in one direction is a right rotation as shown in FIG. 4A, and the rotation of the pinion 7 in the other direction is a left rotation as shown in FIG. 4B.

また、溝部１５には、第２の壁部２１からオイル孔１７まで周方向に延設され溝部１５内に流入した潤滑油をオイル孔１７に導く案内壁２３が設けられている。   The groove portion 15 is provided with a guide wall 23 that extends in the circumferential direction from the second wall portion 21 to the oil hole 17 and guides the lubricating oil flowing into the groove portion 15 to the oil hole 17.

さらに、オイル孔１７は、対向面１３側がピニオン７の軸心より重力方向の上方に設けられ、連結部９側のオイル孔１７端はピニオン７の軸心より重力方向の下方に位置するようにオイル孔１７が下降形成されている。   Further, the oil hole 17 is provided on the opposite surface 13 side above the axis of the pinion 7 in the gravity direction, and the end of the oil hole 17 on the connection part 9 side is positioned below the axis of the pinion 7 in the direction of gravity. An oil hole 17 is formed downward.

また、ケース３は、ケース本体２５と、軸部材１１の外周をベアリング２７，２９を介して支持する分割部３１とを備え、分割部３１はケース本体２５に対して嵌合部３３で組付けられ、対向面１３は嵌合部３３の先端に形成されている。   The case 3 includes a case main body 25 and a divided portion 31 that supports the outer periphery of the shaft member 11 via bearings 27 and 29, and the divided portion 31 is assembled to the case main body 25 with a fitting portion 33. The facing surface 13 is formed at the tip of the fitting portion 33.

さらに、ケース３には、対向面１３側がピニオン７の軸心より重力方向の下方に全長範囲で位置され連結部９側から対向面１３に通じるオイル戻し溝３５が設けられている。   Further, the case 3 is provided with an oil return groove 35 that is located in the entire length range on the opposite surface 13 side below the axis of the pinion 7 in the gravitational direction and communicates with the opposite surface 13 from the connecting portion 9 side.

図２に示すように、動力伝達装置１は、ケース３と、中空軸３７と、方向変換ギヤ組３９と、軸部材１１とを備えている。   As shown in FIG. 2, the power transmission device 1 includes a case 3, a hollow shaft 37, a direction change gear set 39, and a shaft member 11.

ケース３は、ケース本体２５と端部カバー２６と分割部３１とからなる。ケース本体２５は、内部に中空軸３７や方向変換ギヤ組３９などを収容し、端部カバー２６と複数のボルト４１で覆蓋し、トランスミッション１０３（図１参照）を収容するトランスミッションケースにケース本体２５の端部が図示外の複数のボルトにて組み付けられる。このケース本体２５には、分割部３１が嵌合部３３で組付けられる。   The case 3 includes a case main body 25, an end cover 26, and a division part 31. The case main body 25 accommodates the hollow shaft 37, the direction change gear set 39, and the like inside, covers the end cover 26 and a plurality of bolts 41, and the case main body 25 in a transmission case that accommodates the transmission 103 (see FIG. 1). Are assembled with a plurality of bolts (not shown). A split portion 31 is assembled to the case body 25 by a fitting portion 33.

分割部３１は、筒状に形成され、内部に軸部材１１などを収容し、ケース本体２５に嵌合部３３で組付けられ、複数のボルト４１，４３によって固定される。このケース３内には、注入口４５から潤滑油が注入され、潤滑油の注入後、注入口４５はプラグ４７によって閉塞される。このようなケース３内には、中空軸３７と、方向変換ギヤ組３９と、軸部材１１とが収容されている。   The dividing portion 31 is formed in a cylindrical shape, accommodates the shaft member 11 and the like therein, is assembled to the case main body 25 by the fitting portion 33, and is fixed by a plurality of bolts 41 and 43. Lubricating oil is injected into the case 3 from the injection port 45, and the injection port 45 is closed by a plug 47 after the injection of the lubricating oil. In such a case 3, the hollow shaft 37, the direction change gear set 39, and the shaft member 11 are accommodated.

中空軸３７は、軸方向両側の外周を一対のベアリング４９，５１を介してケース本体２５と端部カバー２６とに回転可能に支持されている。また、中空軸３７の軸方向一端側の外周には、フロントデフ１０５（図１参照）のデフケースが一体回転可能に連結されるスプライン形状の連結部５３が形成されている。また、中空軸３７の軸方向両側とケース本体２５及び端部カバー２６との径方向間には、ケース３の内部と外部とを区画するシール部材５５，５７が配置されている。   The hollow shaft 37 is rotatably supported by the case main body 25 and the end cover 26 via a pair of bearings 49 and 51 on the outer periphery on both sides in the axial direction. Further, a spline-shaped connecting portion 53 is formed on the outer periphery of the hollow shaft 37 on one end side in the axial direction so that the differential case of the front differential 105 (see FIG. 1) is connected so as to be integrally rotatable. In addition, seal members 55 and 57 that divide the inside and the outside of the case 3 are arranged between both axial sides of the hollow shaft 37 and the radial direction of the case body 25 and the end cover 26.

なお、中空軸３７の軸心側には、フロントデフ１０５と前車軸１０９（図１参照）とを連結する駆動軸５９が中空軸３７と相対回転可能に挿通されている。この駆動軸５９と端部カバー２６との間には、シール部材５７の外部側とケース３の外部とを区画するシール部材６１が配置されている。   A drive shaft 59 that connects the front differential 105 and the front axle 109 (see FIG. 1) is inserted on the shaft center side of the hollow shaft 37 so as to be rotatable relative to the hollow shaft 37. Between the drive shaft 59 and the end cover 26, a seal member 61 that partitions the outside of the seal member 57 and the outside of the case 3 is disposed.

このような中空軸３７の中央部には、フランジ部６３が形成され、リングギヤ５がボルトや互いの溶接部などの固定手段によって一体回転可能に固定されている。このリングギヤ５は、方向変換ギヤ組３９を構成しており、中空軸３７に連結部５３を介して入力されるフロントデフ１０５からの駆動力を方向変換する。   A flange portion 63 is formed at the center of the hollow shaft 37, and the ring gear 5 is fixed so as to be integrally rotatable by a fixing means such as a bolt or a mutual welded portion. The ring gear 5 constitutes a direction changing gear set 39 and changes the direction of the driving force from the front differential 105 input to the hollow shaft 37 via the connecting portion 53.

方向変換ギヤ組３９は、大径のリングギヤ５と、小径のピニオン７とからなるベベルギヤ組で変速駆動されるように構成されている。ピニオン７は、軸部材１１の一端に軸部材１１と連続する一部材で形成され、リングギヤ５と噛み合っている。この方向変換ギヤ組３９は、中空軸３７から入力された駆動力を方向変換して軸部材１１に伝達する。   The direction changing gear set 39 is configured to be driven by a bevel gear set including a large-diameter ring gear 5 and a small-diameter pinion 7. The pinion 7 is formed as one member continuous with the shaft member 11 at one end of the shaft member 11 and meshes with the ring gear 5. The direction changing gear set 39 changes the direction of the driving force input from the hollow shaft 37 and transmits it to the shaft member 11.

軸部材１１は、軸心が中空軸３７と直交する方向に配置され、軸方向両側を一対のベアリング２７，２９を介して分割部３１に回転可能に支持されている。また、軸部材１１の他端部外周には、スプライン形状の連結部９が形成され、断続機構１１７（図１参照）側のプロペラシャフト１１５に連結された回転部材１１６が一体回転可能に連結される。この回転部材１１６は、分割部３１との径方向間に配置された摺動ブッシュ６５を介して分割部３１と摺動する。また、回転部材１１６と分割部３１との間には、ケース３の内部と外部とを区画するシール部材６７が配置されている。   The shaft member 11 is arranged in a direction orthogonal to the hollow shaft 37 and is axially supported on the divided portion 31 via a pair of bearings 27 and 29 on both sides in the axial direction. Further, a spline-shaped connecting portion 9 is formed on the outer periphery of the other end portion of the shaft member 11, and a rotating member 116 connected to the propeller shaft 115 on the side of the intermittent mechanism 117 (see FIG. 1) is connected so as to be integrally rotatable. The The rotating member 116 slides with the split portion 31 via a sliding bush 65 disposed between the split portion 31 and the radial direction. Further, a seal member 67 that partitions the inside and the outside of the case 3 is disposed between the rotating member 116 and the dividing portion 31.

このように構成された動力伝達装置１では、ケース３内に潤滑油が封入されており、方向変換ギヤ組３９側からオイル孔１７を介して軸部材１１の連結部９側に潤滑油が供給される。このようなオイル孔１７の開口は、分割部３１の対向面１３に設けられている。   In the power transmission device 1 configured as described above, the lubricating oil is sealed in the case 3, and the lubricating oil is supplied from the direction changing gear set 39 side to the connecting portion 9 side of the shaft member 11 through the oil hole 17. Is done. Such an opening of the oil hole 17 is provided in the facing surface 13 of the dividing portion 31.

図３，図４に示すように、対向面１３は、ケース本体２５と分割部３１との嵌合部３３の先端面に環状に形成されている。この対向面１３は、ピニオン７の噛み合い部の背面側に位置しており、ピニオン７の回転によってケース３内に封入された潤滑油が表面に沿って連れ回り流動される。なお、対向面１３の内周側には、ベアリング２７のアウタレースが位置されており、対向面１３に沿って流動される潤滑油がベアリング２７に供給され、ベアリング２７や周辺の摺動部などを潤滑・冷却する。このような対向面１３には、溝部１５が設けられている。   As shown in FIGS. 3 and 4, the facing surface 13 is formed in an annular shape on the front end surface of the fitting portion 33 between the case body 25 and the divided portion 31. The facing surface 13 is located on the back side of the meshing portion of the pinion 7, and the lubricating oil sealed in the case 3 is caused to flow along the surface by the rotation of the pinion 7. Note that an outer race of the bearing 27 is located on the inner peripheral side of the facing surface 13, and lubricating oil that flows along the facing surface 13 is supplied to the bearing 27, so that the bearing 27, the surrounding sliding portion, etc. Lubricate and cool. The facing surface 13 is provided with a groove portion 15.

溝部１５は、対向面１３の周方向に形成され、ピニオン７の軸心位置より重力方向の上方に位置され、対向面の周方向に沿って重力方向下方に低くなるように凹状に形成されている。なお、溝部１５は、段差状に形成されているが、一番底部に位置する面と面一になるように平面、斜面或いは曲面に形成させてもよい。この溝部１５には、溝部１５と連通するようにオイル孔１７が設けられている。   The groove portion 15 is formed in the circumferential direction of the facing surface 13, is located above the axial position of the pinion 7 in the gravity direction, and is formed in a concave shape so as to be lower in the gravity direction along the circumferential direction of the facing surface. Yes. In addition, although the groove part 15 is formed in the step shape, you may form in a plane, a slope, or a curved surface so that it may become flush | level with the surface located in the lowest part. An oil hole 17 is provided in the groove portion 15 so as to communicate with the groove portion 15.

オイル孔１７は、分割部３１の肉部にピニオン７側から連結部９側まで連通されており、一端側の端部が溝部１５内で開口され、他端側の端部が軸部材１１の連結部９が位置する部分で開口されている。また、オイル孔１７は、対向面１３側がピニオン７の軸心より重力方向の上方に設けられ、連結部９側に向けて下降形成されている。このオイル孔１７は、溝部１５内に流入した潤滑油が重力によって連結部９側に流通され連結部９側に潤滑油を供給し、摺動ブッシュ６５やベアリング２９などの摺動部を潤滑・冷却する。この連結部９側を潤滑・冷却した潤滑油は、オイル戻し溝３５によってピニオン７側を軸方向に伝い方向変換ギヤ組３９が位置するケース３内の空間側に戻される。   The oil hole 17 communicates with the flesh portion of the divided portion 31 from the pinion 7 side to the connecting portion 9 side, an end portion on one end side is opened in the groove portion 15, and an end portion on the other end side is connected to the shaft member 11. It is opened at the portion where the connecting portion 9 is located. The oil hole 17 is provided on the opposite surface 13 side above the axis of the pinion 7 in the direction of gravity, and is lowered toward the connecting portion 9 side. The oil hole 17 lubricates the sliding parts such as the sliding bush 65 and the bearing 29 by the lubricating oil flowing into the groove part 15 being distributed to the connecting part 9 side by gravity and supplying the lubricating oil to the connecting part 9 side. Cooling. The lubricating oil that has lubricated and cooled the connecting portion 9 side is transmitted along the pinion 7 side in the axial direction by the oil return groove 35 and returned to the space side in the case 3 where the direction change gear set 39 is located.

オイル戻し溝３５は、分割部３１の重力方向の下方に位置する内壁に連結部９側からピニオン７側まで連通された溝となっている。また、オイル戻し溝３５は、対向面１３側がピニオン７の軸心より重力方向の下方に位置され、連結部９側から対向面１３側に向けて下り傾斜となっている。このオイル戻し溝３５は、連結部９やベアリング２９などの摺動部を潤滑・冷却した潤滑油が流入され、流入した潤滑油が重力によってピニオン７側に戻される。このようなオイル孔１７とオイル戻し溝３５とによって、ケース３内を潤滑油が循環される。   The oil return groove 35 is a groove communicated with the inner wall located below the dividing portion 31 in the gravity direction from the connecting portion 9 side to the pinion 7 side. Further, the oil return groove 35 is located on the opposite surface 13 side below the axis of the pinion 7 in the gravity direction, and is inclined downward from the connecting portion 9 side toward the opposite surface 13 side. The oil return groove 35 is supplied with lubricating oil that has lubricated and cooled sliding portions such as the connecting portion 9 and the bearing 29, and the lubricating oil that has flowed in is returned to the pinion 7 side by gravity. Lubricating oil is circulated in the case 3 by the oil hole 17 and the oil return groove 35.

ここで、ピニオン７の回転によって対向面１３に沿って流動される潤滑油が溝部１５内に潤滑油が流入されれば、オイル孔１７に潤滑油を導入することができるが、ピニオン７の回転による遠心力の影響が大きく、溝部１５内に潤滑油を流入させることが困難であった。そこで、対向面１３には、第１の壁部１９と第２の壁部２１とが設けられている。   Here, if the lubricating oil flowing along the facing surface 13 by the rotation of the pinion 7 flows into the groove portion 15, the lubricating oil can be introduced into the oil hole 17, but the rotation of the pinion 7 The influence of the centrifugal force due to is great, and it was difficult to flow the lubricating oil into the groove 15. Therefore, the opposing surface 13 is provided with a first wall portion 19 and a second wall portion 21.

第１の壁部１９は、溝部１５のオイル孔１７側とは反対側の側壁となっている。この第１の壁部１９は、図４（ａ）の矢印で示すように、ピニオン７の右回転時（一方向への回転時）に対向面１３に沿って流動する潤滑油をせき止め、溝部１５内に潤滑油を流入させる。このような第１の壁部１９とオイル孔１７との周方向間には、第２の壁部２１が設けられている。   The first wall portion 19 is a side wall opposite to the oil hole 17 side of the groove portion 15. As shown by the arrow in FIG. 4A, the first wall portion 19 dampens lubricating oil that flows along the facing surface 13 when the pinion 7 rotates clockwise (when rotated in one direction). Lubricating oil is allowed to flow into 15. A second wall portion 21 is provided between the first wall portion 19 and the oil hole 17 in the circumferential direction.

第２の壁部２１は、溝部１５の外周側に第１の壁部１９からオイル孔１７側に向けて所定長さ離間して設けられている。この第２の壁部２１は、図４（ｂ）の矢印で示すように、ピニオン７の左回転時（他方向への回転時）に対向面１３に沿って流動する潤滑油をせき止め、溝部１５内に潤滑油を流入させる。   The second wall portion 21 is provided on the outer peripheral side of the groove portion 15 so as to be separated from the first wall portion 19 toward the oil hole 17 by a predetermined length. As shown by the arrow in FIG. 4B, the second wall portion 21 dampens the lubricating oil flowing along the facing surface 13 when the pinion 7 rotates leftward (when rotating in the other direction). Lubricating oil is allowed to flow into 15.

なお、第２の壁部２１を溝部１５の内周側に設けてしまうと、対向面１３に沿って流動する潤滑油が外周側に流出してしまい、溝部１５内に潤滑油を流入させることができない。また、第２の壁部２１をオイル孔１７の回転方向の後方に設けてしまうと、対向面１３に沿って流動する潤滑油をせき止めることができず、溝部１５内に潤滑油を流入させることができない。このため、第２の壁部２１は、溝部１５の外周側で第１の壁部１９とオイル孔１７との周方向間に設けられている。このような第２の壁部２１とオイル孔１７との間には、案内壁２３が設けられている。   If the second wall portion 21 is provided on the inner peripheral side of the groove portion 15, the lubricating oil flowing along the facing surface 13 flows out to the outer peripheral side, and the lubricating oil flows into the groove portion 15. I can't. Further, if the second wall portion 21 is provided behind the rotation direction of the oil hole 17, the lubricating oil flowing along the facing surface 13 cannot be damped, and the lubricating oil flows into the groove portion 15. I can't. For this reason, the second wall portion 21 is provided between the first wall portion 19 and the oil hole 17 in the circumferential direction on the outer peripheral side of the groove portion 15. A guide wall 23 is provided between the second wall portion 21 and the oil hole 17.

案内壁２３は、溝部１５の外周側で第２の壁部２１からオイル孔１７まで周方向に延設されている。この案内壁２３は、図４の矢印で示すように、第１の壁部１９及び第２の壁部２１でせき止められ溝部１５内に流入した潤滑油がピニオン７の回転によって外周側に流出することを防止し、潤滑油をオイル孔１７に導かせる。   The guide wall 23 extends in the circumferential direction from the second wall portion 21 to the oil hole 17 on the outer peripheral side of the groove portion 15. As indicated by the arrows in FIG. 4, the guide wall 23 is blocked by the first wall portion 19 and the second wall portion 21, and the lubricating oil flowing into the groove portion 15 flows out to the outer peripheral side by the rotation of the pinion 7. This prevents the lubricating oil from being introduced into the oil hole 17.

このような第１の壁部１９及び第２の壁部２１により、ピニオン７の正逆どちらの回転方向であっても対向面１３に沿って流動される潤滑油をせき止め、溝部１５内に潤滑油を流入させることができ、オイル孔１７に潤滑油を流通させることができる。   By such first wall portion 19 and second wall portion 21, the lubricating oil flowing along the facing surface 13 is damped regardless of the forward or reverse rotation direction of the pinion 7, and the groove portion 15 is lubricated. Oil can be introduced, and lubricating oil can be circulated through the oil hole 17.

このような動力伝達装置１では、対向面１３に設けられた第１の壁部１９によって、ピニオン７の一方向への回転時に対向面１３に沿って流動する潤滑油を溝部１５に流入させることができると共に、対向面１３に設けられた第２の壁部２１によって、ピニオン７の他方向への回転時に対向面１３に沿って流動する潤滑油を溝部１５に流入させることができる。   In such a power transmission device 1, the first wall portion 19 provided on the facing surface 13 causes the lubricating oil flowing along the facing surface 13 to flow into the groove portion 15 when rotating in one direction of the pinion 7. In addition, the second wall portion 21 provided on the facing surface 13 allows the lubricating oil flowing along the facing surface 13 to flow into the groove portion 15 when the pinion 7 rotates in the other direction.

このため、第１の壁部１９と第２の壁部２１とによって、ピニオン７の正逆方向へのいずれの回転時にも溝部１５に潤滑油を流入させることができ、オイル孔１７に潤滑油を導入させることができる。   For this reason, the first wall portion 19 and the second wall portion 21 allow the lubricating oil to flow into the groove portion 15 during any rotation of the pinion 7 in the forward / reverse direction, and the lubricating oil into the oil hole 17. Can be introduced.

従って、このような動力伝達装置１では、ピニオン７の噛み合い部の背面側にオイル孔１７が設けられた動力伝達装置１において、オイル孔１７に潤滑油を流通させ、軸部材１１の連結部９側に潤滑油を供給させることができる。   Therefore, in such a power transmission device 1, in the power transmission device 1 in which the oil hole 17 is provided on the back side of the meshing portion of the pinion 7, the lubricating oil is circulated through the oil hole 17, and the connecting portion 9 of the shaft member 11. Lubricating oil can be supplied to the side.

また、溝部１５には、第２の壁部２１からオイル孔１７まで周方向に延設され溝部１５内に流入した潤滑油をオイル孔１７に導く案内壁２３が設けられているので、溝部１５内に流入した潤滑油をオイル孔１７に確実に導入することができる。   The groove 15 is provided with a guide wall 23 that extends in the circumferential direction from the second wall 21 to the oil hole 17 and guides the lubricating oil that has flowed into the groove 15 to the oil hole 17. The lubricating oil flowing into the oil hole 17 can be reliably introduced into the oil hole 17.

さらに、オイル孔１７は、対向面１３側がピニオン７の軸心より重力方向の上方に設けられ、連結部９側に向けて下降形成されているので、リングギヤ５の掻き上げなどによって潤滑油をオイル孔１７に流通させる必要がなく、簡易な構造で潤滑油をオイル孔１７に流通させることができる。   Further, the oil hole 17 is provided on the opposite surface 13 side in the gravity direction above the axis of the pinion 7 and is formed to descend toward the connecting portion 9 side. There is no need to circulate through the holes 17, and the lubricating oil can be circulated through the oil holes 17 with a simple structure.

また、対向面１３は、ケース本体２５と分割部３１との嵌合部３３の先端に形成されているので、第１の壁部１９や第２の壁部２１の設計変更を容易に行うことができ、対向面１３の設計の自由度を向上することができる。   Moreover, since the opposing surface 13 is formed in the front-end | tip of the fitting part 33 of the case main body 25 and the division part 31, the design change of the 1st wall part 19 and the 2nd wall part 21 can be performed easily. Thus, the degree of freedom in designing the facing surface 13 can be improved.

さらに、ケース３には、対向面１３側がピニオン７の軸心より重力方向の下方に位置され連結部９側から対向面１３に通じるオイル戻し溝３５が設けられているので、連結部９側を潤滑・冷却した潤滑油をピニオン７側に戻すことができ、簡易な構造で潤滑油の循環効率を向上することができる。   Further, the case 3 is provided with an oil return groove 35 that is located on the opposite surface 13 side below the axis of the pinion 7 in the gravitational direction and communicates with the opposite surface 13 from the connection portion 9 side. The lubricated and cooled lubricating oil can be returned to the pinion 7 side, and the circulation efficiency of the lubricating oil can be improved with a simple structure.

なお、本発明の実施の形態に係る動力伝達装置では、第１の壁部がピニオンの一方向への回転時に対応し、第２の壁部がピニオンの他方向への回転時に対応しているが、第１の壁部と第２の壁部とをそれぞれピニオンの他方向への回転時と一方向への回転時に対応させてもよい。この場合には、オイル孔が設けられた側の壁部を、オイル孔と反対側の壁部とオイル孔との周方向間に設ければよい。   In the power transmission device according to the embodiment of the present invention, the first wall corresponds to when the pinion rotates in one direction, and the second wall corresponds to the rotation of the pinion in the other direction. However, you may make a 1st wall part and a 2nd wall part respond | correspond at the time of the rotation to the other direction of a pinion, and the rotation to one direction, respectively. In this case, the wall portion on the side provided with the oil hole may be provided between the wall portion on the side opposite to the oil hole and the oil hole in the circumferential direction.

１…動力伝達装置
３…ケース
５…リングギヤ
７…ピニオン
９…連結部
１１…軸部材
１３…対向面
１５…溝部
１７…オイル孔
１９…第１の壁部
２１…第２の壁部
２３…案内壁
２５…ケース本体
２７，２９…ベアリング
３１…分割部
３３…嵌合部
３５…オイル戻し溝 DESCRIPTION OF SYMBOLS 1 ... Power transmission device 3 ... Case 5 ... Ring gear 7 ... Pinion 9 ... Connection part 11 ... Shaft member 13 ... Opposite surface 15 ... Groove part 17 ... Oil hole 19 ... 1st wall part 21 ... 2nd wall part 23 ... Guide Wall 25 ... Case body 27, 29 ... Bearing 31 ... Split part 33 ... Fitting part 35 ... Oil return groove

Claims (5)

ケースと、このケースに回転可能に収容され一端側にリングギヤと噛み合うピニオンが設けられ他端側に回転部材に連結される連結部が設けられた軸部材とを備え、前記ケースには、前記ピニオンの噛み合い部の背面側に環状の対向面が設けられ、前記対向面には、潤滑油が流入する溝部が設けられ、前記溝部には、前記ケースの肉部に前記ピニオン側から前記連結部側へ潤滑油を供給するオイル孔が設けられた動力伝達装置であって、
前記対向面には、前記溝部の前記オイル孔側とは周方向の反対側の側壁として設けられ前記ピニオンの一方向への回転時に前記対向面に沿って流動する潤滑油を前記溝部に流入させる第１の壁部と、前記溝部の外周側で前記第１の壁部と前記オイル孔との周方向間に設けられ前記ピニオンの他方向への回転時に前記対向面に沿って流動する潤滑油と当接し前記溝部に流入させる第２の壁部とが設けられていることを特徴とする動力伝達装置。 A case, and a shaft member that is rotatably accommodated in the case and is provided with a pinion that meshes with the ring gear on one end side, and a connecting member that is connected to the rotation member on the other end side, and the case includes the pinion An annular facing surface is provided on the back side of the meshing portion, and a groove portion into which lubricating oil flows is provided on the facing surface, and the groove portion has a flesh portion of the case from the pinion side to the connecting portion side. A power transmission device provided with an oil hole for supplying lubricating oil to
The opposed surface is provided as a side wall opposite to the oil hole side of the groove portion, and flows lubricating oil that flows along the opposed surface into the groove portion when rotating in one direction of the pinion. Lubricating oil provided between the first wall portion and the circumferential direction of the first wall portion and the oil hole on the outer peripheral side of the groove portion and flowing along the facing surface when rotating in the other direction of the pinion And a second wall portion that contacts the groove portion and flows into the groove portion. 請求項１記載の動力伝達装置であって、
前記溝部には、前記第２の壁部から前記オイル孔まで周方向に延設され前記溝部内に流入した潤滑油を前記オイル孔に導く案内壁が設けられていることを特徴とする動力伝達装置。 The power transmission device according to claim 1,
The groove portion is provided with a guide wall extending in the circumferential direction from the second wall portion to the oil hole and guiding lubricating oil flowing into the groove portion to the oil hole. apparatus. 請求項１又は２記載の動力伝達装置であって、
前記オイル孔は、前記対向面側が前記ピニオンの軸心より重力方向の上方に設けられ、前記連結部側に向けて下降形成されていることを特徴とする動力伝達装置。 The power transmission device according to claim 1 or 2,
The power transmission device according to claim 1, wherein the oil hole is provided such that the opposite surface side is provided above the axis of the pinion in the direction of gravity and is lowered toward the connecting portion side. 請求項１乃至３のいずれか１項に記載の動力伝達装置であって、
前記ケースは、ケース本体と、前記軸部材の外周をベアリングを介して支持する分割部とを備え、前記分割部は前記ケース本体に対して嵌合部で組付けられ、前記対向面は前記嵌合部の先端に形成されていることを特徴とする動力伝達装置。 The power transmission device according to any one of claims 1 to 3,
The case includes a case main body and a divided portion that supports an outer periphery of the shaft member via a bearing, the divided portion is assembled to the case main body by a fitting portion, and the opposing surface is the fitting A power transmission device formed at the tip of a joint. 請求項１乃至４のいずれか１項に記載の動力伝達装置であって、
前記ケースには、前記対向面側が前記ピニオンの軸心より重力方向の下方に位置され前記連結部側から前記対向面に通じるオイル戻し溝が設けられていることを特徴とする動力伝達装置。 The power transmission device according to any one of claims 1 to 4,
The power transmission device according to claim 1, wherein the case is provided with an oil return groove with the facing surface side positioned below the pinion axis in the direction of gravity and leading from the connecting portion side to the facing surface.
JP2011160051A 2011-07-21 2011-07-21 Power transmission device Expired - Fee Related JP5835979B2 (en)

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JPS63266268A (en) * 1987-04-21 1988-11-02 Aisin Warner Ltd Lubricator for bearing section
JP2792040B2 (en) * 1988-08-29 1998-08-27 スズキ株式会社 Transfer lubrication oil guiding device
JPH0389220U (en) * 1989-12-28 1991-09-11
JP2924064B2 (en) * 1990-03-31 1999-07-26 スズキ株式会社 Power train
JP2003097675A (en) * 2001-09-21 2003-04-03 Hino Motors Ltd Lubricating structure of bearing for drive pinion shaft

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