JP2015187473A - Lubrication structure of driving power transmission mechanism - Google Patents
Lubrication structure of driving power transmission mechanism Download PDFInfo
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- JP2015187473A JP2015187473A JP2014065139A JP2014065139A JP2015187473A JP 2015187473 A JP2015187473 A JP 2015187473A JP 2014065139 A JP2014065139 A JP 2014065139A JP 2014065139 A JP2014065139 A JP 2014065139A JP 2015187473 A JP2015187473 A JP 2015187473A
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Abstract
Description
本発明は、クラッチやブレーキなどの摩擦係合部材の内周側に軸受を配置した構造の駆動力伝達機構において潤滑油を給油するための潤滑構造に関する。 The present invention relates to a lubricating structure for supplying lubricating oil in a driving force transmission mechanism having a structure in which a bearing is disposed on the inner peripheral side of a friction engagement member such as a clutch or a brake.
従来、油圧クラッチ及びブレーキを用いて制御する自動変速機に関し、原動機に入力軸が直結する入力継ぎ手の無い多段自動変速機に関する技術が開示されている（例えば、特許文献１参照）。この技術では、クラッチ（ブレーキ）のドライブプレートやドリブンプレートに貫通孔を形成し、潤滑油を供給し易くして、クラッチ（ブレーキ）の焼き付けが防止されている。 Conventionally, regarding an automatic transmission controlled using a hydraulic clutch and a brake, a technique related to a multi-stage automatic transmission without an input joint in which an input shaft is directly connected to a prime mover has been disclosed (for example, see Patent Document 1). In this technique, a through hole is formed in a drive plate or a driven plate of a clutch (brake) to facilitate the supply of lubricating oil, and seizure of the clutch (brake) is prevented.
しかしながら、上記特許文献１に開示された貫通孔の延在方向は、回転軸の軸方向と平行であることに加えて、回転による遠心力によって飛ばされた潤滑油の方向に対して略直交する方向であるため、クラッチ（ブレーキ）へ効率的に潤滑油を給油できないという問題がある。 However, the extending direction of the through hole disclosed in Patent Document 1 is substantially orthogonal to the direction of the lubricating oil blown by the centrifugal force due to the rotation in addition to being parallel to the axial direction of the rotating shaft. Therefore, there is a problem that lubricating oil cannot be efficiently supplied to the clutch (brake).
また、上記特許文献１に開示された技術では、クラッチ（ブレーキ）のプレートの内径側と当接するギアを支持するためのベアリングが軸方向でクラッチ（ブレーキ）とラップする（重なる）構造であるため、回転による遠心力によって飛ばされた潤滑油がベアリングで遮られ、より一層、潤滑油が給油され難くなるという問題もある。 Further, in the technique disclosed in Patent Document 1, the bearing for supporting the gear that contacts the inner diameter side of the clutch (brake) plate has a structure that wraps (overlaps) the clutch (brake) in the axial direction. There is also a problem that the lubricating oil blown off by the centrifugal force due to the rotation is blocked by the bearing, and the lubricating oil becomes more difficult to be supplied.
そこで、本発明は、クラッチやブレーキなどの摩擦係合部材に対して従来よりも効率良く潤滑油を給油することのできる駆動力伝達機構の潤滑構造の提供を目的とした。 Therefore, an object of the present invention is to provide a lubricating structure of a driving force transmission mechanism that can supply lubricating oil to friction engaging members such as clutches and brakes more efficiently than before.
上述した課題を解決すべく提供される本発明の駆動力伝達機構の潤滑構造は、回転軸を回転自在に支持する軸受と、前記軸受の外側に設けられた摩擦係合部材と、前記軸受と前記摩擦係合部材との間に配置されて前記軸受の周りで回転可能に設けられ、前記軸受から前記摩擦係合部材に駆動力を伝達可能な駆動力伝達部材とを備え、前記軸受と前記摩擦係合部材とが、軸方向で相互に重なる位置関係を有する駆動力伝達機構の潤滑構造において、前記駆動力伝達部材が、潤滑油の給油口が形成された開放側の端面から軸方向に沿って延在する給油溝と、前記給油溝から前記摩擦係合部材に抜ける孔であって、前記給油溝から前記摩擦係合部材に前記潤滑油を給油可能な給油孔と、を備えることを特徴とする。 The lubrication structure of the driving force transmission mechanism of the present invention provided to solve the above-described problem includes a bearing that rotatably supports a rotating shaft, a friction engagement member provided outside the bearing, and the bearing. A driving force transmission member disposed between the friction engagement member and rotatably provided around the bearing, and capable of transmitting a driving force from the bearing to the friction engagement member. In a lubricating structure of a driving force transmission mechanism in which the friction engagement members overlap with each other in the axial direction, the driving force transmission member extends in the axial direction from the open end surface where the lubricating oil supply port is formed. An oil supply groove extending along the oil supply groove, and a hole extending from the oil supply groove to the friction engagement member, the oil supply hole capable of supplying the lubricating oil from the oil supply groove to the friction engagement member. Features.
本発明の駆動力伝達機構の潤滑構造においては、駆動力伝達部材が、潤滑油の給油口が形成された開放側端面から軸方向に沿って延在する給油溝と、給油溝から摩擦係合部材に抜ける給油孔とを備えるので、駆動力伝達部材の回転に伴い、遠心力で遠心方向外側に飛ばされた潤滑油を給油溝で捕捉（キャッチ）しつつ、給油孔を介して給油溝から摩擦係合部材に向けて潤滑油をスムーズに導くことができる。これにより、潤滑油を給油溝から摩擦係合部材に向けて効率良く供給できる。そのため、油切れによる摩擦係合部材の焼き付けを従来よりも確実に防止することができる。 In the lubricating structure of the driving force transmission mechanism according to the present invention, the driving force transmission member includes an oil supply groove extending along the axial direction from the open end surface on which the lubricating oil supply port is formed, and friction engagement from the oil supply groove. As the drive force transmitting member rotates, the lubricating oil blown outward in the centrifugal direction due to centrifugal force is captured (catch) by the oil supply groove, and from the oil supply groove through the oil supply hole. Lubricating oil can be smoothly guided toward the friction engagement member. Thus, the lubricating oil can be efficiently supplied from the oil supply groove toward the friction engagement member. Therefore, seizure of the frictional engagement member due to running out of oil can be prevented more reliably than before.
本発明によれば、油切れによる摩擦係合部材の焼き付けを従来よりも確実に防止することができる。 According to the present invention, seizure of the frictional engagement member due to oil shortage can be prevented more reliably than before.
本発明は、図示の実施形態によって概略的に示されており、図面を参照しつつ、本発明について以下で詳細に説明する。なお以下では、「周方向」、「軸方向」、及び、「径方向」とは、特に断らない限り、シャフト１（回転軸）の「周方向」、「軸方向」、及び、「径方向」を意味するものとする。 The invention is schematically illustrated by the illustrated embodiment and will be described in detail below with reference to the drawings. In the following, “circumferential direction”, “axial direction”, and “radial direction” unless otherwise specified, “circumferential direction”, “axial direction”, and “radial direction” of the shaft 1 (rotating shaft). ".
図１は、本発明の一実施形態に係る駆動力伝達機構の潤滑構造を適用した自動変速機Ｘの構造を示した構造図である。図２は、本発明の一実施形態に係る駆動力伝達機構の潤滑構造及びその周辺の詳細構成を示した部分拡大断面図である。本実施形態に係る駆動力伝達機構の潤滑構造１００は、シャフト１（回転軸）を回転自在に支持する軸受２と、軸受２の外側に設けられた湿式多板クラッチ３（摩擦係合部材）と、軸受２と湿式多板クラッチ３との間に配置されて前記軸受２の周りで回転可能に設けられ、前記軸受２から湿式多板クラッチ３に駆動力を伝達可能なインナーギア４（駆動力伝達部材）とを備え、前記軸受２と前記湿式多板クラッチ３とが、軸方向で相互に重なる位置関係を有している。 FIG. 1 is a structural diagram showing a structure of an automatic transmission X to which a lubricating structure of a driving force transmission mechanism according to an embodiment of the present invention is applied. FIG. 2 is a partially enlarged cross-sectional view showing a lubricating structure of a driving force transmission mechanism according to an embodiment of the present invention and a detailed configuration around it. A lubrication structure 100 for a driving force transmission mechanism according to this embodiment includes a bearing 2 that rotatably supports a shaft 1 (rotating shaft), and a wet multi-plate clutch 3 (friction engagement member) provided outside the bearing 2. And an inner gear 4 (drive) which is disposed between the bearing 2 and the wet multi-plate clutch 3 and is rotatably provided around the bearing 2 and capable of transmitting a driving force from the bearing 2 to the wet multi-plate clutch 3. Force bearing member), and the bearing 2 and the wet multi-plate clutch 3 have a positional relationship in which they overlap each other in the axial direction.
図２に示すように、シャフト１の内部には、後述する貫通路１１を介して、シャフト１の外側にある湿式多板クラッチ３に潤滑油を給油可能な給油路１０が軸方向に沿って形成されている。また、シャフト１には、給油路１０と連通し且つ径方向外側に貫通した貫通路１１が形成されている。 As shown in FIG. 2, an oil supply passage 10 that can supply lubricating oil to the wet multi-plate clutch 3 outside the shaft 1 is provided along the axial direction inside the shaft 1 through a through passage 11 described later. Is formed. The shaft 1 is formed with a through passage 11 that communicates with the oil supply passage 10 and penetrates radially outward.
図２に示すように、本実施形態の湿式多板クラッチ３は、インナーギア４に対して相対的に回転可能に取り付けられたアウターギア３０と、該アウターギア３０に対して周方向に固定され且つ軸方向に摺動可能に設けられた複数個（本実施形態では６つ）のアウタープレート３１と、インナーギア４に対して周方向に固定され且つ軸方向に摺動可能に設けられた複数個（本実施形態では５つ）のインナープレート３２とを有する。 As shown in FIG. 2, the wet multi-plate clutch 3 of the present embodiment is fixed in the circumferential direction with respect to the outer gear 30 that is attached to the inner gear 4 so as to be relatively rotatable. A plurality (six in this embodiment) of outer plates 31 provided to be slidable in the axial direction and a plurality of outer plates 31 that are fixed in the circumferential direction with respect to the inner gear 4 and slidable in the axial direction. And (in this embodiment, five) inner plates 32.
図２に示すように、インナーギア４には、潤滑油の給油口が形成された開放側の端面４ａから軸方向に沿って延在する給油溝４０と、給油溝４０から湿式多板クラッチ３に抜ける孔であって、給油溝４０から湿式多板クラッチ３に潤滑油を給油可能な給油孔４１とを有している。これにより、本実施形態では、給油路１０及び貫通路１１を経由して供給される潤滑油は、給油孔４１を介して給油溝４０から湿式多板クラッチ３へ供給可能となっている。 As shown in FIG. 2, the inner gear 4 includes an oil supply groove 40 extending in the axial direction from an open end surface 4 a in which an oil supply port for lubricating oil is formed, and the wet multi-plate clutch 3 from the oil supply groove 40. And an oil supply hole 41 through which lubricating oil can be supplied from the oil supply groove 40 to the wet multi-plate clutch 3. Thereby, in this embodiment, the lubricating oil supplied via the oil supply passage 10 and the through passage 11 can be supplied from the oil supply groove 40 to the wet multi-plate clutch 3 via the oil supply hole 41.
図３に示すように、インナーギア４の外周部は凹凸形状を有するものであって、周方向に沿って、歯部４２と歯底部４３とが交互に形成されている。 As shown in FIG. 3, the outer peripheral portion of the inner gear 4 has an uneven shape, and the tooth portions 42 and the tooth bottom portions 43 are alternately formed along the circumferential direction.
この歯底部４３には、周方向に沿って所定の角度を隔てて複数個（本実施形態では３つ）の給油孔４１が形成されている。なお、給油孔４１の個数は３つに限定されず、給油孔４１は少なくとも１箇所に形成されていれば良い。また、図２に示すように、給油孔４１は、軸方向に沿って所定の間隔を隔てて２つが形成されているが、給油孔４１の個数は２つ以上であっても良い。 A plurality (three in the present embodiment) of oil supply holes 41 are formed in the tooth bottom portion 43 at a predetermined angle along the circumferential direction. Note that the number of the oil supply holes 41 is not limited to three, and the oil supply holes 41 may be formed in at least one place. As shown in FIG. 2, two oil supply holes 41 are formed at predetermined intervals along the axial direction, but the number of oil supply holes 41 may be two or more.
また、図３に示すように、本実施形態では、加工容易な点で、インナーギア４の給油溝４０がインナーギア４の径方向内側に仮想中心を持つ半円形状を有しているが、給油溝４０の形状はこの形状に限定されず、給油溝４０に工具が入りさえすれば、三角形状や四角形状など、どのような形状であっても良い。 Further, as shown in FIG. 3, in the present embodiment, the oil supply groove 40 of the inner gear 4 has a semicircular shape having a virtual center on the radially inner side of the inner gear 4 in terms of easy processing. The shape of the oil supply groove 40 is not limited to this shape, and may be any shape such as a triangular shape or a square shape as long as a tool enters the oil supply groove 40.
本実施形態の給油溝４０は、インナーギア４の径方向内側で軸受２を固定及び支持するためのスナップリング（図２及び図３に示す符号５）用の溝としても機能する。これにより、給油溝４０を軸方向（図２中の矢印Ａ）から見た際に、給油溝４０を通してスナップリング５の外周縁を視認できると共に、外周縁の径方向外側に空間を形成できるので、この空間に工具を差し込むことでスナップリング５の取り外し作業を簡単に実現できる。その結果、故障時のスナップリング５の交換作業の容易化、ライン作業での組立性向上、試験時の効率向上といった効果を期待できる。 The oil supply groove 40 of the present embodiment also functions as a groove for a snap ring (reference numeral 5 shown in FIGS. 2 and 3) for fixing and supporting the bearing 2 on the radially inner side of the inner gear 4. As a result, when the oil supply groove 40 is viewed from the axial direction (arrow A in FIG. 2), the outer peripheral edge of the snap ring 5 can be visually recognized through the oil supply groove 40, and a space can be formed radially outward of the outer peripheral edge. The snap ring 5 can be easily removed by inserting a tool into this space. As a result, the effects of facilitating the replacement work of the snap ring 5 at the time of failure, improving the assemblability in line work, and improving the efficiency during testing can be expected.
上記構成では、インナーギア４が、潤滑油の給油口が形成された開放側の端面４ａから軸方向に沿って延在する給油溝４０と、給油溝４０から湿式多板クラッチ３に抜ける給油孔４１とを備えるので、インナーギア４の回転に伴い、遠心力で遠心方向外側（径方向外側）に飛ばされた潤滑油を給油溝４０で捕捉（キャッチ）しつつ、給油孔４１を介して給油溝４０から湿式多板クラッチ３に向けて潤滑油をスムーズに導くことができる。これにより、潤滑油を給油溝４０から湿式多板クラッチ３に向けて効率良く供給できる。そのため、油切れによる湿式多板クラッチ３の焼き付けを従来よりも確実に防止することができる。 In the above configuration, the inner gear 4 has an oil supply groove 40 extending in the axial direction from the open end surface 4a where the oil supply port for the lubricating oil is formed, and an oil supply hole from the oil supply groove 40 to the wet multi-plate clutch 3. 41, so that the lubricating oil blown to the outside in the centrifugal direction (radially outward) by the centrifugal force with the rotation of the inner gear 4 is captured (catch) by the oil supply groove 40, and is supplied through the oil supply hole 41. Lubricating oil can be smoothly guided from the groove 40 toward the wet multi-plate clutch 3. Thereby, the lubricating oil can be efficiently supplied from the oil supply groove 40 toward the wet multi-plate clutch 3. Therefore, seizure of the wet multi-plate clutch 3 due to running out of oil can be prevented more reliably than before.
以上、本発明の実施形態について図面に基づいて説明したが、具体的な構成は、これらの実施形態に限定されるものではない。本発明の範囲は、上記した実施形態の説明ではなく特許請求の範囲によって示され、さらに特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれる。 As mentioned above, although embodiment of this invention was described based on drawing, a specific structure is not limited to these embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.
なお、上記実施形態では、本発明に係る駆動力伝達機構の潤滑構造をクラッチに適用する例について述べたが、本発明はこれに限定されず、本発明に係る駆動力伝達機構の潤滑構造をブレーキに適用しても良い。 In the above embodiment, the example in which the lubricating structure of the driving force transmission mechanism according to the present invention is applied to the clutch has been described. However, the present invention is not limited to this, and the lubricating structure of the driving force transmission mechanism according to the present invention is used. You may apply to a brake.
なお、上記実施形態では、インナーギア４の給油溝４０のうち歯底部４３に連通する部位が、側断面視においてインナーギア４の軸方向と平行な平坦面４４を有する例について述べたが、本発明はこれに限定されず、インナーギア４の給油溝４０のうち歯底部４３に連通する部位が、側断面視において、開放側の端面４ａから軸方向へ離れるに連れて湿式多板クラッチ３に近づくように傾斜したテーパ状の傾斜面を有していても良い。これにより、開放側の端面４ａにおいて給油口の面積を小さくすることができるので、給油口を介してインナーギア４の軸方向奥部に一旦流れ込んだ潤滑油が給油口から流出してしまうことを抑制できる。 In the above embodiment, an example in which the portion of the oil supply groove 40 of the inner gear 4 that communicates with the tooth bottom portion 43 has the flat surface 44 parallel to the axial direction of the inner gear 4 in a side sectional view has been described. The invention is not limited to this, and the portion of the oil supply groove 40 of the inner gear 4 that communicates with the tooth bottom 43 is separated from the open end face 4a in the axial direction in the sectional side view. You may have the taper-shaped inclined surface inclined so that it may approach. As a result, the area of the oil supply port can be reduced on the open end surface 4a, so that the lubricating oil that has once flowed into the axially inner part of the inner gear 4 through the oil supply port flows out of the oil supply port. Can be suppressed.
本発明の駆動力伝達機構の潤滑構造は、クラッチやブレーキなどの摩擦係合部材の内周側に軸受を配置した構造の駆動力伝達機構において好適に利用することができる。 The lubricating structure of the driving force transmission mechanism of the present invention can be suitably used in a driving force transmission mechanism having a structure in which a bearing is disposed on the inner peripheral side of a friction engagement member such as a clutch or a brake.
１ シャフト（回転軸）
１０ 給油路
１００ 潤滑構造
１１ 貫通路
２ 軸受
３ 湿式多板クラッチ（摩擦係合部材）
３０ アウターギア
３１ アウタープレート
３２ インナープレート
４ インナーギア（駆動力伝達部材）
４ａ 開放側端面
４０ 給油溝
４１ 給油孔
４２ 歯部
４３ 歯底部
４４ 平坦面
５ スナップリング
1 Shaft (Rotating shaft)
DESCRIPTION OF SYMBOLS 10 Oil supply path 100 Lubrication structure 11 Through path 2 Bearing 3 Wet multi-plate clutch (friction engagement member)
30 Outer gear 31 Outer plate 32 Inner plate 4 Inner gear (driving force transmission member)
4a Open side end face 40 Oil supply groove 41 Oil supply hole 42 Tooth part 43 Tooth bottom part 44 Flat surface 5 Snap ring
Claims (1)
前記軸受の外側に設けられた摩擦係合部材と、
前記軸受と前記摩擦係合部材との間に配置されて前記軸受の周りで回転可能に設けられ、前記軸受から前記摩擦係合部材に駆動力を伝達可能な駆動力伝達部材とを備え、
前記軸受と前記摩擦係合部材とが、軸方向で相互に重なる位置関係を有する駆動力伝達機構の潤滑構造において、
前記駆動力伝達部材が、
潤滑油の給油口が形成された開放側の端面から軸方向に沿って延在する給油溝と、
前記給油溝から前記摩擦係合部材に抜ける孔であって、前記給油溝から前記摩擦係合部材に前記潤滑油を給油可能な給油孔と、を備えることを特徴とする駆動力伝達機構の潤滑構造。 A bearing that rotatably supports the rotating shaft;
A friction engagement member provided on the outside of the bearing;
A driving force transmission member that is disposed between the bearing and the friction engagement member and is rotatably provided around the bearing, and capable of transmitting a driving force from the bearing to the friction engagement member;
In the lubricating structure of the driving force transmission mechanism in which the bearing and the friction engagement member have a positional relationship in which they overlap each other in the axial direction,
The driving force transmission member is
An oil supply groove extending along the axial direction from an end surface on the open side where an oil supply port for the lubricating oil is formed;
Lubricating a driving force transmission mechanism comprising: a hole extending from the oil supply groove to the friction engagement member, the oil supply hole capable of supplying the lubricant oil from the oil supply groove to the friction engagement member. Construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014065139A JP2015187473A (en) | 2014-03-27 | 2014-03-27 | Lubrication structure of driving power transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014065139A JP2015187473A (en) | 2014-03-27 | 2014-03-27 | Lubrication structure of driving power transmission mechanism |
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| JP2015187473A true JP2015187473A (en) | 2015-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2014065139A Pending JP2015187473A (en) | 2014-03-27 | 2014-03-27 | Lubrication structure of driving power transmission mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331850A (en) * | 2018-02-05 | 2018-07-27 | 重庆小康工业集团股份有限公司 | Strong lubricating type automobile clutch |
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2014
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331850A (en) * | 2018-02-05 | 2018-07-27 | 重庆小康工业集团股份有限公司 | Strong lubricating type automobile clutch |
| CN108331850B (en) * | 2018-02-05 | 2024-02-23 | 重庆小康工业集团股份有限公司 | Strong lubrication type clutch for motor vehicle |
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