JP2010107015A - Lubricating oil passage structure for automatic transmission - Google Patents

Lubricating oil passage structure for automatic transmission Download PDF

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JP2010107015A
JP2010107015A JP2008282239A JP2008282239A JP2010107015A JP 2010107015 A JP2010107015 A JP 2010107015A JP 2008282239 A JP2008282239 A JP 2008282239A JP 2008282239 A JP2008282239 A JP 2008282239A JP 2010107015 A JP2010107015 A JP 2010107015A
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oil passage
lubricating oil
axial
automatic transmission
rotating shaft
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Takeshi Torii
武史 鳥居
Tomohiro Onishi
智広 大西
Nobukazu Ike
宣和 池
Shingo Uozumi
信悟 魚住
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Aisin AW Co Ltd
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Aisin AW Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a lubricating oil passage structure for an automatic transmission, capable of supplying a lubricating oil in a suitable amount to respective positions of a transmission mechanism regardless of the number of revolutions of a rotating shaft. <P>SOLUTION: In the automatic transmission 1, the transmission mechanism 2 is arranged in the vicinity of an input shaft 11A and an intermediate shaft 11B, and the lubricating oil is introduced into the lubricating oil passage structure 10 formed in the input shaft 11A and the intermediate shaft 11B from an oil pump body 4, and is delivered to the transmission mechanism 2. As the lubricating oil passage structure 10, an axial direction oil passage 21b allotted for a front side part AreaF of the transmission mechanism 2 and axial direction oil passages 22Ab and 22Bb allotted for a rear side part AreaR of the transmission mechanism 2 are formed with different lengths in the input shaft 11A and the intermediate shaft 11B, and the lubricating oil is independently supplied to the front side portion AreaF from the axial direction oil passage 21b through a delivery hole 21c and the rear side part AreaR from the axial direction oil passages 22Ab and 22Bb through a delivery hole 22c. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、例えば車輌等に搭載される自動変速機の潤滑油路構造に係り、詳しくは、回転軸の周囲に配置された変速機構に、該回転軸に形成された油路から潤滑油を供給するための自動変速機の潤滑油路構造に関する。   The present invention relates to a lubricating oil passage structure of an automatic transmission mounted on, for example, a vehicle, and more specifically, lubricating oil is transmitted from an oil passage formed on the rotating shaft to a speed change mechanism disposed around the rotating shaft. The present invention relates to a lubricating oil passage structure of an automatic transmission for supply.

従来、車輌等に搭載される自動変速機は、例えば歯車機構(プラネタリギヤ)、クラッチやブレーキ(油圧サーボを含む)、ワンウェイクラッチ等からなる変速機構が備えられており、この変速機構における伝達経路を変更することで変速や前後進切換等を可能にしている。このような変速機構には、各ギヤ等における噛合部位、動力伝達部材の相対回転等による摺動部位、クラッチやブレーキ等の摩擦係合部位などがあり、これらの部位における磨耗や焼きつき等を防止して耐久性を向上するために、潤滑油を供給する潤滑油路が設けられている。   2. Description of the Related Art Conventionally, an automatic transmission mounted on a vehicle or the like has been provided with a speed change mechanism including, for example, a gear mechanism (planetary gear), a clutch or a brake (including a hydraulic servo), a one-way clutch, and the like. By changing it, it is possible to change gears and switch forward and backward. Such a speed change mechanism includes a meshing portion in each gear, a sliding portion due to relative rotation of the power transmission member, a friction engagement portion such as a clutch and a brake, etc., and wear and seizure in these portions. In order to prevent and improve durability, a lubricating oil passage for supplying lubricating oil is provided.

一般に、このような潤滑油路としては、ミッションケースに回転自在に支持された入力軸(及び中間軸)内において、軸方向に潤滑油を導通させる油路を形成し、ミッションケース(具体的にはオイルポンプボディ)が入力軸を支持する部分から潤滑油を入力軸内に導入し、軸方向に潤滑油を搬送しつつ、外周側に向けて形成された排出孔から変速機構の各部位に潤滑油を供給するものが採用されている(特許文献1参照)。   Generally, as such a lubricating oil path, an oil path that conducts lubricating oil in the axial direction is formed in an input shaft (and an intermediate shaft) that is rotatably supported by the transmission case. The oil pump body) introduces the lubricating oil into the input shaft from the part where the input shaft is supported, and conveys the lubricating oil in the axial direction to the parts of the transmission mechanism from the discharge holes formed toward the outer periphery. What supplies lubricating oil is employ | adopted (refer patent document 1).

特開2007−46693号公報JP 2007-46693 A

ところで、上記特許文献1のものは、ミッションケースの前側の壁を構成するオイルポンプボディの内径側から入力軸に潤滑油を導入しているが、その潤滑油を変速機構の最後端の部位まで供給する必要がある。このような潤滑油路構造にあっては、例えば入力軸の回転数が低くて遠心力が小さい状態にあって潤滑油が変速機構の最後端の部位まで充分に供給されたとしても、入力軸の回転数が高くなって遠心力が増した際に、変速機構の前側部位に対して設けられた排出孔から潤滑油が適正量よりも多く排出されてしまい、変速機構の前側部位が潤滑過多になると共に、変速機構の後側部位まで届く潤滑油が減少して潤滑不足を招く虞があるという問題がある。通常の運転状態にあっては、入力軸の回転数が高回転となる状態が長時間になるような状況は生じ難いが、このような高回転の状況でも潤滑不足を防止することで、自動変速機の耐久性向上を図ることが望まれる。   By the way, although the thing of the said patent document 1 introduce | transduces lubricating oil into the input shaft from the internal diameter side of the oil pump body which comprises the wall of the front side of a transmission case, the lubricating oil is carried out to the site | part of the last end of a transmission mechanism. It is necessary to supply. In such a lubricating oil path structure, for example, even if the rotational speed of the input shaft is low and the centrifugal force is small and the lubricating oil is sufficiently supplied to the rearmost end portion of the transmission mechanism, the input shaft When the rotational speed of the engine increases and the centrifugal force increases, the lubricating oil is discharged from the discharge hole provided in the front part of the transmission mechanism in an appropriate amount, and the front part of the transmission mechanism is overlubricated. In addition, there is a problem that the lubricating oil reaching the rear portion of the transmission mechanism may be reduced, leading to insufficient lubrication. Under normal operating conditions, it is unlikely that a situation where the rotational speed of the input shaft is high will last for a long time, but even under such high speed conditions, automatic lubrication is prevented by preventing insufficient lubrication. It is desired to improve the durability of the transmission.

そこで本発明は、回転軸の回転数の高低に拘らず、変速機構の各部位に適量の潤滑油を供給することが可能な自動変速機の潤滑油路構造を提供することを目的とするものである。   SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a lubricating oil passage structure for an automatic transmission that can supply an appropriate amount of lubricating oil to each part of the transmission mechanism regardless of the rotational speed of the rotating shaft. It is.

請求項1に係る本発明は(例えば図1乃至図3参照)、ケース(7)の支持部(4)に対して回転自在に支持された回転軸(11A,11B)の周囲に変速機構(2)が配置され、前記回転軸(11A,11B)に形成された油路に前記支持部(4)から潤滑油を導入して前記変速機構(2)に向けて排出する自動変速機(1)の潤滑油路構造(10)において、
前記回転軸(11A,11B)は、前記支持部(4)から潤滑油を導入する複数の導入孔(21a,22a)と、前記各導入孔(21a,22a)から導入された潤滑油を軸方向に導通する複数の軸方向油路(21b,22Ab,22Bb)と、前記各軸方向油路(21b,22Ab,22Bb)から前記回転軸(11A,11B)の外周へ潤滑油を排出する排出孔(21c,22c)と、を備え、
前記回転軸(11A,11B)の軸方向に対して複数の軸方向範囲(AreaF,AreaR)を設定し、
前記複数の軸方向油路(21b,22Ab,22Bb)は、前記複数の軸方向範囲(AreaF,AreaR)を分担するように異なる長さの経路に形成されると共に、前記排出孔(21c,22c)は、前記各軸方向油路(21b,22Ab,22Bb)が分担した前記各軸方向範囲(AreaF,AreaR)に位置するように形成された、
ことを特徴とする自動変速機の潤滑油路構造(10)にある。
According to the first aspect of the present invention (see, for example, FIGS. 1 to 3), a speed change mechanism ( 2), an automatic transmission (1) that introduces lubricating oil from the support portion (4) into an oil passage formed on the rotating shaft (11A, 11B) and discharges the lubricating oil toward the transmission mechanism (2). ) Lubricating oil passage structure (10)
The rotating shafts (11A, 11B) are a plurality of introduction holes (21a, 22a) for introducing the lubricating oil from the support portion (4) and the lubricating oil introduced from the introduction holes (21a, 22a). A plurality of axial oil passages (21b, 22Ab, 22Bb) that conduct in the direction, and discharge that discharges lubricating oil from the respective axial oil passages (21b, 22Ab, 22Bb) to the outer periphery of the rotary shaft (11A, 11B) Holes (21c, 22c),
A plurality of axial ranges (AreaF, AreaR) are set with respect to the axial direction of the rotation shafts (11A, 11B),
The plurality of axial oil passages (21b, 22Ab, 22Bb) are formed in paths having different lengths so as to share the plurality of axial ranges (AreaF, AreaR), and the discharge holes (21c, 22c). ) Is formed so as to be located in each axial range (AreaF, AreaR) shared by each axial oil passage (21b, 22Ab, 22Bb),
This is in the lubricating oil passage structure (10) of the automatic transmission.

請求項2に係る本発明は(例えば図2参照)、前記複数の軸方向油路(21b,22Ab)は、互いに独立するように、前記回転軸(11A)の中心に対してそれぞれ偏心した位置に形成されてなる、
請求項1記載の自動変速機の潤滑油路構造(10)にある。
According to a second aspect of the present invention (see, for example, FIG. 2), the plurality of axial oil passages (21b, 22Ab) are eccentric from the center of the rotating shaft (11A) so as to be independent from each other. Formed into,
A lubricating oil passage structure (10) for an automatic transmission according to claim 1.

請求項3に係る本発明は(例えば図1参照)、前記変速機構(2)は、クラッチ(C−1)の油圧サーボを有し、
前記回転軸(11A)は、前記油圧サーボに作動圧を軸方向に導通する作動圧用軸方向油路(31b)を有し、
前記複数の軸方向油路(21b,22Ab)及び前記作動圧用軸方向油路(31b)は、互いに独立するように、前記回転軸(11A)の中心に対してそれぞれ偏心した位置に形成されてなる、
請求項2記載の自動変速機の潤滑油路構造(10)にある。
According to a third aspect of the present invention (see, for example, FIG. 1), the speed change mechanism (2) has a hydraulic servo of the clutch (C-1),
The rotating shaft (11A) has an operating pressure axial oil passage (31b) that conducts an operating pressure axially to the hydraulic servo,
The plurality of axial oil passages (21b, 22Ab) and the working pressure axial oil passage (31b) are formed at positions eccentric from the center of the rotating shaft (11A) so as to be independent from each other. Become,
A lubricating oil passage structure (10) for an automatic transmission according to claim 2.

請求項4に係る本発明は(例えば図1参照)、前記回転軸(11A)は、前記変速機構(2)の入力軸からなり、
前記複数の導入孔(21a,22a)は、前記偏心した位置の前記各軸方向油路(21b,22Ab)から、前記入力軸(11A)の回転方向(ω)前方側に向けて形成されてなる、
請求項2または3記載の自動変速機の潤滑油路構造(10)にある。
In the present invention according to claim 4 (see, for example, FIG. 1), the rotating shaft (11A) is an input shaft of the speed change mechanism (2),
The plurality of introduction holes (21a, 22a) are formed from the axial oil passages (21b, 22Ab) at the eccentric positions toward the front side in the rotational direction (ω) of the input shaft (11A). Become,
A lubricating oil passage structure (10) for an automatic transmission according to claim 2 or 3.

請求項5に係る本発明は(例えば図1及び図2参照)、前記回転軸(11A)は、外周部分にあって前記支持部(4)に設けられた潤滑油の供給孔(4a)に対向する位置に環状の溝部(11a)を有し、
前記複数の導入孔(21a,22a)は、その外周側が前記環状の溝部(11a)に開口してなる、
請求項1ないし4のいずれか記載の自動変速機の潤滑油路構造(10)にある。
According to a fifth aspect of the present invention (see, for example, FIGS. 1 and 2), the rotating shaft (11A) is provided in a lubricating oil supply hole (4a) provided in the support portion (4) at an outer peripheral portion. Having an annular groove (11a) at the opposite position;
The plurality of introduction holes (21a, 22a) are formed such that the outer peripheral side thereof is open to the annular groove (11a).
A lubricating oil passage structure (10) for an automatic transmission according to any one of claims 1 to 4.

なお、上記カッコ内の符号は、図面と対照するためのものであるが、これは、発明の理解を容易にするための便宜的なものであり、特許請求の範囲の構成に何等影響を及ぼすものではない。   In addition, although the code | symbol in the said parenthesis is for contrast with drawing, this is for convenience for making an understanding of invention easy, and has no influence on the structure of a claim. It is not a thing.

請求項1に係る本発明によると、回転軸の軸方向に対して複数の軸方向範囲を設定し、複数の軸方向油路を、複数の軸方向範囲を分担するように異なる長さの経路に形成すると共に、排出孔を、各軸方向油路が分担した各軸方向範囲に位置するように形成したので、複数の軸方向範囲にあって潤滑油量の適正化を図ることができ、例えば回転軸が高回転となった状態でも、変速機構における導入孔に近い側で潤滑油が排出されてしまって導入孔から遠い側にて潤滑不足が発生するような状態を防止することができる。これにより、自動変速機の耐久性向上を図ることができる。   According to the first aspect of the present invention, a plurality of axial ranges are set with respect to the axial direction of the rotating shaft, and the plurality of axial oil passages are different in length so as to share the plurality of axial ranges. In addition, the discharge hole is formed so as to be located in each axial range shared by each axial oil passage, so that the amount of lubricating oil can be optimized in a plurality of axial ranges, For example, even when the rotation shaft is at a high speed, it is possible to prevent a state in which the lubricating oil is discharged on the side close to the introduction hole in the transmission mechanism and insufficient lubrication occurs on the side far from the introduction hole. . Thereby, durability improvement of an automatic transmission can be aimed at.

請求項2に係る本発明によると、複数の軸方向油路は、回転軸の中心に対してそれぞれ偏心した位置に形成されているので、それらの油路を互いに独立するように構成することができる。   According to the second aspect of the present invention, the plurality of axial oil passages are formed at positions that are eccentric with respect to the center of the rotating shaft, respectively, so that the oil passages can be configured to be independent from each other. it can.

請求項3に係る本発明によると、複数の軸方向油路及び作動圧用軸方向油路は、回転軸の中心に対してそれぞれ偏心した位置に形成されているので、それらの油路を互いに独立するように構成することができる。   According to the third aspect of the present invention, the plurality of axial oil passages and the working pressure axial oil passages are formed at positions that are eccentric with respect to the center of the rotation shaft. Can be configured to.

請求項4に係る本発明によると、複数の導入孔は、偏心した位置の各軸方向油路から、入力軸の回転方向前方側に向けて形成されているので、回転時には、ケースの支持部から供給される潤滑油を迎え入れる形でより多くの潤滑油を各軸方向油路に導入することができる。   According to the fourth aspect of the present invention, the plurality of introduction holes are formed from the axial oil passages at the eccentric positions toward the front side in the rotation direction of the input shaft. More lubricating oil can be introduced into each axial oil passage in the form of receiving the lubricating oil supplied from.

請求項5に係る本発明によると、回転軸の外周部分にあって支持部に設けられた潤滑油の供給孔に対向する位置に環状の溝部が形成されており、複数の導入孔は、その環状の溝部に開口しているので、複数の導入孔に略々均等に潤滑油を導入することができ、即ち複数の軸方向油路に潤滑油量が偏ることなく、潤滑油を導入することができる。   According to the fifth aspect of the present invention, the annular groove is formed in the outer peripheral portion of the rotating shaft at a position facing the lubricating oil supply hole provided in the support portion, and the plurality of introduction holes are Since it is open in the annular groove, the lubricating oil can be introduced into the plurality of introduction holes substantially evenly, that is, the lubricating oil can be introduced into the plurality of axial oil passages without biasing the amount of the lubricating oil. Can do.

以下、本発明に係る実施の形態を図に沿って説明する。なお、本実施の形態に係る自動変速機1は、FR(フロントエンジン・リヤドライブ)タイプの車輌に用いて好適なものであり、以下の説明においては、図1に示す左方側を実際の車輌の進行方向に合わせて「前方側(前側)」、右方側を「後方側(後側)」という。   Hereinafter, embodiments according to the present invention will be described with reference to the drawings. The automatic transmission 1 according to the present embodiment is suitable for use in an FR (front engine / rear drive) type vehicle. In the following description, the left side shown in FIG. According to the traveling direction of the vehicle, it is called “front side (front side)” and the right side is called “rear side (rear side)”.

図1に示すように、自動変速機1は、大まかに、トルクコンバータ3を内包するハウジングケース5、及び変速機構2を内包するミッションケース6からなるケース7を備えており、該ミッションケース6には、前側の隔壁として隔壁部材(支持部)4が固着されて、変速機構2とトルクコンバータ3との間を隔離していると共に、後側の隔壁としてミッションケース6と一体の隔壁6aが形成されている。   As shown in FIG. 1, the automatic transmission 1 roughly includes a case 7 including a housing case 5 containing a torque converter 3 and a transmission case 6 containing a transmission mechanism 2. A partition member (support) 4 is fixed as a front partition to separate the transmission mechanism 2 from the torque converter 3, and a partition 6a integral with the transmission case 6 is formed as a rear partition. Has been.

該隔壁部材4は、オイルポンプが収納されるオイルポンプボディ及びオイルポンプカバーが一体的に固着されたユニットで構成されており、更に該隔壁部材4の内周側には、トルクコンバータ3のステータを支持するステータシャフト8が一体的に固着されている。該ステータシャフト8の内周面8aには、ブッシュb1及びニードルベアリングb2を介して、変速機構2の入力軸(回転軸)11Aが回転自在に支持されている。   The partition member 4 is composed of a unit in which an oil pump body in which an oil pump is accommodated and an oil pump cover are integrally fixed, and a stator of the torque converter 3 is provided on the inner peripheral side of the partition member 4. Is fixed integrally. An input shaft (rotary shaft) 11A of the speed change mechanism 2 is rotatably supported on the inner peripheral surface 8a of the stator shaft 8 via a bush b1 and a needle bearing b2.

入力軸11Aの後方側には、図2(a)に示すように、嵌合穴11dが形成されていると共に該嵌合穴11dにスプライン11sが形成されており、図1に示すように、中間軸(回転軸)11Bの前方側がスプライン嵌合して、広義として一体的な入力軸を構成している。一方、変速機構2の出力軸12は、上記ミッションケース6の隔壁6aに形成されたスリーブ部6bに対し、ニードルベアリングb3及びボールベアリングb4を介して回転自在に支持されており、該出力軸12の前方側には、穴部12aが形成されている。そして、上記中間軸11Bの後方側は、ベアリングb5を介して該出力軸12の穴部12aに回転自在に支持されている。   As shown in FIG. 2A, a fitting hole 11d is formed on the rear side of the input shaft 11A, and a spline 11s is formed in the fitting hole 11d. As shown in FIG. The front side of the intermediate shaft (rotating shaft) 11B is spline-fitted to form an integrated input shaft in a broad sense. On the other hand, the output shaft 12 of the speed change mechanism 2 is rotatably supported by a sleeve portion 6b formed in the partition wall 6a of the transmission case 6 via a needle bearing b3 and a ball bearing b4. A hole 12a is formed on the front side of the. The rear side of the intermediate shaft 11B is rotatably supported in the hole 12a of the output shaft 12 through a bearing b5.

即ち、入力軸11A及び中間軸11Bと出力軸12とは、相対回転自在に嵌合した一本軸状の回転軸を構成しており、前方側が隔壁部材4に、後方側が隔壁6aにそれぞれ回転自在に支持された、両持ち構造からなる。そして、入力軸11A、中間軸11B、及び出力軸12により構成された回転軸上に、変速機構2の各部位が支持される形で、ケース7内に配置されている。   In other words, the input shaft 11A, the intermediate shaft 11B, and the output shaft 12 constitute a single-shaft rotating shaft that is relatively rotatably fitted, and the front side rotates to the partition member 4 and the rear side rotates to the partition 6a. It consists of a dual-supported structure that is freely supported. And it arrange | positions in the case 7 in the form by which each site | part of the transmission mechanism 2 is supported on the rotating shaft comprised by 11A of intermediate shafts, the intermediate shaft 11B, and the output shaft 12. FIG.

上記変速機構2には、入力軸11Aの回転を減速するシングルピニオンプラネタリギヤSPと、変速回転を生成して出力軸12に出力するラビニヨ型のプラネタリギヤセットPSとが備えられており、これらにおける各ギヤ(回転要素)の回転状態を変更しつつ伝達経路を変更するため、各油圧サーボにより係脱されるクラッチC−1,C−2,C−3及びブレーキB−1,B−2と、ワンウェイクラッチF−1とが備えられている。   The speed change mechanism 2 is provided with a single pinion planetary gear SP that decelerates the rotation of the input shaft 11A and a Ravigneaux type planetary gear set PS that generates a speed change rotation and outputs it to the output shaft 12. In order to change the transmission path while changing the rotation state of the (rotating element), the clutches C-1, C-2, C-3 and the brakes B-1, B-2 engaged and disengaged by each hydraulic servo, and the one-way Clutch F-1 is provided.

なお、クラッチC−1,C−3は、プラネタリギヤSPの減速回転をプラネタリギヤセットPSの各ギヤに伝達自在にするクラッチであり、クラッチC−2は、プラネタリギヤセットPSの1つのギヤに入力軸11A及び中間軸11Bの回転を入力するクラッチであり、ブレーキB−1,B−2及びワンウェイクラッチF−1は、プラネタリギヤセットPSの各ギヤの回転状態を係止し得る係止手段である。   The clutches C-1 and C-3 are clutches that allow the reduced speed rotation of the planetary gear SP to be transmitted to each gear of the planetary gear set PS. The clutch C-2 is connected to one gear of the planetary gear set PS on the input shaft 11A. The brakes B-1 and B-2 and the one-way clutch F-1 are locking means that can lock the rotation state of each gear of the planetary gear set PS.

本自動変速機1における変速機構2においては、詳しくは後述する軸方向油路21b,22Ab,22Bbの長さに対応する形で、軸方向に対して2つの軸方向範囲が設定されており、即ち、前側部位AreaFと後側部位AreaRとに分けられている。前側部位AreaFには、前側から順に、ブレーキB−1、クラッチC−3、プラネタリギヤSPが配置されており、後側部位AreaRには、前側から順に、クラッチC−1、ワンウェイクラッチF−1、ブレーキB−2、プラネタリギヤセットPS、クラッチC−2が配置されている。なお、ここで言う「クラッチ」や「ブレーキ」とは、摩擦プレートだけでなく、それらの油圧サーボも含めた、クラッチやブレーキを機能させる各部品を含めて指すものである。   In the speed change mechanism 2 in the automatic transmission 1, two axial ranges are set with respect to the axial direction in a form corresponding to the lengths of axial oil passages 21b, 22Ab, and 22Bb described later in detail. In other words, it is divided into a front part AreaF and a rear part AreaR. A brake B-1, a clutch C-3, and a planetary gear SP are arranged in order from the front side in the front part AreaF, and a clutch C-1, a one-way clutch F-1, in order from the front side are arranged in the rear part AreaR. A brake B-2, a planetary gear set PS, and a clutch C-2 are arranged. The “clutch” and “brake” referred to here include not only the friction plate but also the parts that function the clutch and brake, including their hydraulic servos.

ついで、本発明に係る自動変速機の潤滑油路構造10について詳細に説明する。図1及び図2(a)に示すように、上記入力軸11Aの内部には、前側から順に、油路41、油路21、油路22A、油路31が形成されており、図1に示すように、上記中間軸11Bには、油路22B、油路32が形成されている。このうち、油路41はトルクコンバータ3に内圧を供給する油路であり、油路31はクラッチC−1に作動圧を供給する油路であり、油路32はクラッチC−2に作動圧を供給する油路である。そして、入力軸11Aの油路22Aと中間軸の油路22Bとは連通された1つの油路を構成しており、これら油路22A及び油路22Bと、上記油路21とにより、本発明に係る潤滑油路構造10を構成している。   Next, the lubricating oil passage structure 10 for an automatic transmission according to the present invention will be described in detail. As shown in FIGS. 1 and 2A, an oil passage 41, an oil passage 21, an oil passage 22A, and an oil passage 31 are formed in the input shaft 11A in this order from the front side. As shown, an oil passage 22B and an oil passage 32 are formed in the intermediate shaft 11B. Of these, the oil passage 41 is an oil passage for supplying an internal pressure to the torque converter 3, the oil passage 31 is an oil passage for supplying an operating pressure to the clutch C-1, and the oil passage 32 is an operating pressure for the clutch C-2. It is an oil passage which supplies. The oil passage 22A of the input shaft 11A and the oil passage 22B of the intermediate shaft constitute a single oil passage, and the oil passage 22A, the oil passage 22B, and the oil passage 21 constitute the present invention. The lubricating oil path structure 10 which concerns on this is comprised.

詳細には、図2(a)及び図2(b)に示すように、上記入力軸11Aの後方側には、該入力軸11Aの中心に対してそれぞれ偏心した位置にあって、嵌合穴11dから軸方向前方側に向かって穿設された軸方向油路21b,22Ab,31bが形成されている。このうちの軸方向油路(作動圧用軸方向油路)31bは、後方側からキャップ部材31dが嵌合されて閉塞されている。なお、キャップ部材31dの代わりにボール状部材を用いてもよい。   Specifically, as shown in FIGS. 2 (a) and 2 (b), on the rear side of the input shaft 11A, there is a fitting hole at an eccentric position with respect to the center of the input shaft 11A. Axial oil passages 21b, 22Ab, 31b drilled from 11d toward the front side in the axial direction are formed. Of these, the axial oil passage (operating pressure axial oil passage) 31b is closed by fitting a cap member 31d from the rear side. A ball-shaped member may be used instead of the cap member 31d.

また、軸方向油路31bの前方側にあって入力軸11Aの外周側には、環状の溝部11bが形成されており、該溝部11bから径方向に貫通孔31aが穿設されて該軸方向油路31bに連通されている。更に、軸方向油路31bの後方側にあって入力軸11Aの外周側にも、環状の溝部11cが形成されており、該溝部11cから径方向に貫通孔31cが穿設されて該軸方向油路31bに連通されている。即ち、これら貫通孔31a、軸方向油路31b、貫通孔31cは互いに連通されており、不図示の油圧制御装置から隔壁部材4を介して溝部11bに供給されるクラッチC−1用の作動圧を油圧サーボまで連通する油路31を構成している。   An annular groove 11b is formed on the outer peripheral side of the input shaft 11A on the front side of the axial oil passage 31b, and a through hole 31a is formed in the radial direction from the groove 11b. It communicates with the oil passage 31b. Further, an annular groove portion 11c is formed on the rear side of the axial oil passage 31b and on the outer peripheral side of the input shaft 11A, and a through hole 31c is formed in the radial direction from the groove portion 11c. It communicates with the oil passage 31b. That is, the through hole 31a, the axial oil passage 31b, and the through hole 31c are in communication with each other, and the operating pressure for the clutch C-1 supplied from the hydraulic control device (not shown) to the groove 11b through the partition member 4. Is configured to communicate with the hydraulic servo.

また、軸方向油路21bも、後方側からボール状部材21dが嵌合されて閉塞されている。該軸方向油路21bの前方側にあって入力軸11Aの外周側には、環状の溝部11aが形成されており、該溝部11aには、図1に示すように、不図示の油圧制御装置から隔壁部材4の油路(供給孔)4aを介して潤滑油が供給されるように構成されている。また、図2(c)に示すように、該溝部11aから導入孔21aが穿設されて該軸方向油路21bに連通されている。該導入孔21aは、入力軸11Aの回転方向ωに対して前方側に向けて形成されており、該入力軸11Aが回転した際(即ち走行中)に、油路4aから溝部11aに供給された潤滑油を何れの回転位置にあっても迎え入れるように構成され、つまり軸方向油路21bに多量の潤滑油量を導入し得るように構成されている。   The axial oil passage 21b is also closed by fitting the ball-shaped member 21d from the rear side. An annular groove portion 11a is formed on the front side of the axial oil passage 21b and on the outer peripheral side of the input shaft 11A. In the groove portion 11a, as shown in FIG. The lubricating oil is configured to be supplied from an oil passage (supply hole) 4 a of the partition wall member 4. Further, as shown in FIG. 2 (c), an introduction hole 21a is formed from the groove 11a and communicates with the axial oil passage 21b. The introduction hole 21a is formed toward the front side with respect to the rotation direction ω of the input shaft 11A, and is supplied from the oil passage 4a to the groove portion 11a when the input shaft 11A rotates (that is, during traveling). It is configured to receive the lubricating oil at any rotational position, that is, to be able to introduce a large amount of lubricating oil into the axial oil passage 21b.

そして、軸方向油路21bには、図1及び図2(a)に示すように、導入孔21aよりも後方側において、入力軸11Aの外周側に開口するように複数の排出孔21cが穿設されており、それら排出孔21cから遠心力によって排出(飛散)される潤滑油は、上記ボール状部材21dによりも前方側、即ち軸方向油路21bの軸方向の長さの経路に対応する軸方向範囲である変速機構2の前側部位AreaFを潤滑するように構成されている。即ち、これら導入孔21a、軸方向油路21b、排出孔21cにより、不図示の油圧制御装置から隔壁部材4の油路4aを介して溝部11aに供給される潤滑油を、変速機構2の前側部位AreaFに供給する油路21を構成している。   As shown in FIGS. 1 and 2A, a plurality of discharge holes 21c are formed in the axial oil passage 21b so as to open to the outer peripheral side of the input shaft 11A on the rear side of the introduction hole 21a. The lubricating oil that is provided and discharged (scattered) by centrifugal force from the discharge holes 21c corresponds to the front side of the ball-shaped member 21d, that is, the axial length of the axial oil passage 21b. The front portion AreaF of the speed change mechanism 2 that is in the axial direction range is lubricated. That is, the lubricating oil supplied to the groove 11a from the hydraulic control device (not shown) through the oil passage 4a of the partition wall member 4 by the introduction hole 21a, the axial oil passage 21b, and the discharge hole 21c is supplied to the front side of the transmission mechanism 2. An oil passage 21 to be supplied to the part AreaF is configured.

一方、軸方向油路22Abは、後方側が嵌合穴11dに対して開放されており、図1に示すように中間軸11Bがスプライン嵌合された状態で、該中間軸11Bに形成された軸方向油路22Bbに連通されている。また、図2(a)及び図2(c)に示すように、該軸方向油路22Abの前方側にあっては、上述した環状の溝部11aから導入孔22aが穿設されて該軸方向油路22Abに連通されている。該導入孔22aも同様に、入力軸11Aの回転方向ωに対して前方側に向けて形成されており、該入力軸11Aが回転した際(即ち走行中)に、油路4aから溝部11aに供給された潤滑油を何れの回転位置にあっても迎え入れるように構成され、つまり軸方向油路22Abに多量の潤滑油量を導入し得るように構成されている。   On the other hand, the axial oil passage 22Ab is open on the rear side with respect to the fitting hole 11d, and the shaft formed in the intermediate shaft 11B with the intermediate shaft 11B being spline-fitted as shown in FIG. It communicates with the directional oil passage 22Bb. As shown in FIGS. 2 (a) and 2 (c), on the front side of the axial oil passage 22Ab, an introduction hole 22a is drilled from the annular groove portion 11a, and the axial direction It communicates with the oil passage 22Ab. Similarly, the introduction hole 22a is formed toward the front side with respect to the rotational direction ω of the input shaft 11A, and when the input shaft 11A rotates (that is, during traveling), the oil passage 4a leads to the groove 11a. It is configured to receive the supplied lubricating oil at any rotational position, that is, configured to be able to introduce a large amount of lubricating oil into the axial oil passage 22Ab.

そして、軸方向油路22Abに連通する軸方向油路22Bbには、図1に示すように、中間軸11Bの軸方向全体に亘って、中間軸11Bの外周側に開口するように複数の排出孔22cが穿設されており、それら排出孔22cから遠心力によって排出(飛散)される潤滑油は、上記ボール状部材21dによりも後方側、即ち軸方向油路21bよりも後方側にあって、軸方向油路22Bbの軸方向の長さの経路に対応する軸方向範囲である変速機構2の後側部位AreaRを潤滑するように構成されている。即ち、これら導入孔22a及び軸方向油路22Abにより油路22Aを構成し、軸方向油路22Bb及び排出孔22cにより油路22Bを構成し、これら油路22A,22Bにより隔壁部材4の油路4aから溝部11aに供給される潤滑油を、変速機構2の後側部位AreaRに供給する油路を構成している。   As shown in FIG. 1, the axial oil passage 22Bb communicating with the axial oil passage 22Ab has a plurality of discharges so as to open to the outer peripheral side of the intermediate shaft 11B over the entire axial direction of the intermediate shaft 11B. The holes 22c are formed, and the lubricating oil discharged (sprayed) from the discharge holes 22c by centrifugal force is behind the ball-shaped member 21d, that is, behind the axial oil passage 21b. The rear portion AreaR of the speed change mechanism 2 that is the axial range corresponding to the axial length path of the axial oil passage 22Bb is configured to be lubricated. That is, the oil passage 22A is constituted by the introduction hole 22a and the axial oil passage 22Ab, the oil passage 22B is constituted by the axial oil passage 22Bb and the discharge hole 22c, and the oil passage of the partition wall member 4 is constituted by the oil passages 22A and 22B. An oil passage is configured to supply the lubricating oil supplied from 4a to the groove 11a to the rear portion AreaR of the speed change mechanism 2.

以上のように潤滑油路構造10は、入力軸11A及び中間軸11Bに、隔壁部材4から潤滑油を導入する複数の導入孔21a,22aと、各導入孔21a,22aから導入された潤滑油を軸方向に導通する複数の軸方向油路21b,22Ab,22Bbと、各軸方向油路21b,22Ab,22Bbから入力軸11A及び中間軸11Bの外周へ潤滑油を排出する排出孔21c,22cとにより構成されている。また、軸方向油路21bと軸方向油路22Ab,22Bbとは、変速機構2の前側部位AreaF及び後側部位AreaRを分担するように、それぞれ異なる長さの経路に形成されると共に、排出孔21cと排出孔22cとが、軸方向油路21bと軸方向油路22Ab,22Bbとがそれぞれ分担した前側部位AreaF及び後側部位AreaRに位置するように形成されていることになる。   As described above, the lubricating oil passage structure 10 includes the plurality of introduction holes 21a and 22a for introducing the lubricating oil from the partition member 4 to the input shaft 11A and the intermediate shaft 11B, and the lubricating oil introduced from the introduction holes 21a and 22a. A plurality of axial oil passages 21b, 22Ab, 22Bb that conduct in the axial direction, and discharge holes 21c, 22c that discharge the lubricating oil from the respective axial oil passages 21b, 22Ab, 22Bb to the outer periphery of the input shaft 11A and the intermediate shaft 11B. It is comprised by. Further, the axial oil passage 21b and the axial oil passages 22Ab and 22Bb are formed in paths having different lengths so as to share the front part AreaF and the rear part AreaR of the speed change mechanism 2, and the discharge holes 21c and the discharge hole 22c are formed so as to be positioned at the front-side part AreaF and the rear-side part AreaR shared by the axial oil passage 21b and the axial oil passages 22Ab and 22Bb, respectively.

ここで、図4は、例えば従来の潤滑油路構造のように、入力軸11A及び中間軸11Bに1本だけの軸方向油路を形成して、その1本の軸方向油路から複数の排出孔を形成したものにあって、入力軸11Aの回転数Ninの変化に対する前側部位AreaF及び後側部位AreaRの潤滑油量を示したものである。即ち、図4(a)に示すように、変速機構2の前側部位AreaFでは、低回転数である入力軸回転数Nin−lo、中程度の回転数である入力軸回転数Nin−mid、高回転数である入力軸回転数Nin−hiで示すように回転数が高くなるほど潤滑流量が多くなり、特に中回転数Nin−midや高回転数Nin−hiとなると、必要流量Xよりも多量に上回って潤滑過多の状態になることが分かる。また、図4(b)に示すように、変速機構2の後側部位AreaRでは、回転数が高くなるほど潤滑流量が少なくなり、特に高回転数Nin−hiとなると、必要流量Yよりも下回って潤滑不足の状態になることが分かる。つまり、入力軸11Aが高回転になった結果、遠心力によって変速機構2の前側部位AreaFに多量の潤滑油が排出されてしまい、変速機構2の後側部位AreaRに行き届かなくなる状態が発生していることが分かる。   Here, in FIG. 4, for example, as in a conventional lubricating oil passage structure, only one axial oil passage is formed on the input shaft 11 </ b> A and the intermediate shaft 11 </ b> B, and a plurality of axial oil passages are formed from the one axial oil passage. In this example, the amount of lubricating oil in the front part AreaF and the rear part AreaR with respect to the change in the rotational speed Nin of the input shaft 11A is shown. That is, as shown in FIG. 4A, in the front part AreaF of the speed change mechanism 2, the input shaft rotational speed Nin-lo, which is a low rotational speed, the input shaft rotational speed Nin-mid, which is a medium rotational speed, is high. As indicated by the input shaft rotational speed Nin-hi which is the rotational speed, the lubricating flow rate increases as the rotational speed increases. In particular, when the rotational speed is Nin-mid or high rotational speed Nin-hi, the lubrication flow rate is larger than the required flow rate X. It can be seen that the condition is over-lubricated. Further, as shown in FIG. 4B, in the rear part AreaR of the speed change mechanism 2, the lubrication flow rate decreases as the rotational speed increases. In particular, when the rotational speed is Nin-hi, the lubrication flow rate is lower than the required flow rate Y. It turns out that it will be in the state of insufficient lubrication. That is, as a result of the high rotation of the input shaft 11A, a large amount of lubricating oil is discharged to the front part AreaF of the transmission mechanism 2 due to centrifugal force, and a state where the rear part AreaR of the transmission mechanism 2 cannot be reached occurs. I understand that

一方、本発明に係る潤滑油路構造10にあっては、図3(a)に示すように、変速機構2の前側部位AreaFが軸方向油路21bの経路の長さに対応している結果、回転数が高くなるほど軸方向油路21bに導入される潤滑流量が少なくなる傾向にあるものの、特に高回転数Nin−hiであっても必要流量Xに対して適量な潤滑流量の状態になることが分かる。また、図3(b)に示すように、変速機構2の後側部位AreaRが軸方向油路22Bbの経路の長さに対応している結果、同様に回転数が高くなるほど軸方向油路22Ab,22Bbに導入される潤滑流量が少なくなる傾向にあるものの、特に高回転数Nin−hiであっても必要流量Yに対して適量な潤滑流量の状態になることが分かる。   On the other hand, in the lubricating oil passage structure 10 according to the present invention, as shown in FIG. 3A, the result is that the front portion AreaF of the speed change mechanism 2 corresponds to the length of the axial oil passage 21b. Although the lubrication flow rate introduced into the axial oil passage 21b tends to decrease as the rotation speed increases, the lubrication flow rate is appropriate for the required flow rate X even at a high rotation speed Nin-hi. I understand that. As shown in FIG. 3B, as a result of the rear portion AreaR of the speed change mechanism 2 corresponding to the length of the axial oil passage 22Bb, the axial oil passage 22Ab increases as the rotational speed increases. , 22Bb, the lubricating flow rate tends to decrease, but it can be seen that the lubricating flow rate is in an appropriate amount with respect to the required flow rate Y even at a high rotational speed Nin-hi.

従って、以上説明した本自動変速機の潤滑油路構造10によると、軸方向に対して前側部位AreaF及び後側部位AreaRの範囲を設定し、軸方向油路21bと軸方向油路22Ab,22Bbとによりそれぞれ分担するように、軸方向油路21bと軸方向油路22Ab,22Bbとを異なる長さの経路に形成すると共に、排出孔21c,22cを、軸方向油路21bと軸方向油路22Ab,22Bbとが分担した前側部位AreaF及び後側部位AreaRに位置するように形成したので、変速機構2の軸方向にあって潤滑油量の適正化を図ることができ、例えば入力軸11Aが高回転となった状態でも、変速機構2における前方側(導入孔21a,22aに近い側)で潤滑油が排出されてしまって後方側(導入孔21a,22aから遠い側)にて潤滑不足が発生するような状態を防止することができる。これにより、自動変速機1の耐久性向上を図ることができる。   Therefore, according to the lubricating oil passage structure 10 of the automatic transmission described above, the ranges of the front portion AreaF and the rear portion AreaR are set in the axial direction, and the axial oil passage 21b and the axial oil passages 22Ab and 22Bb are set. The axial oil passage 21b and the axial oil passages 22Ab and 22Bb are formed in different lengths so as to be shared with each other, and the discharge holes 21c and 22c are formed in the axial oil passage 21b and the axial oil passage. 22Ab and 22Bb are formed so as to be located at the front side area AreaF and the rear side area AreaR that are shared with each other, so that the amount of lubricating oil in the axial direction of the speed change mechanism 2 can be optimized. Even in the high rotation state, the lubricating oil is discharged on the front side (the side closer to the introduction holes 21a and 22a) in the speed change mechanism 2, and the rear side (far from the introduction holes 21a and 22a). It is possible to prevent conditions such as insufficient lubrication occurs at the side). Thereby, durability improvement of the automatic transmission 1 can be aimed at.

また、軸方向油路21bと軸方向油路22Abとを、入力軸11Aの中心に対してそれぞれ偏心した位置に形成したので、それらの油路21,22を互いに独立するように構成することができ、更に、クラッチC−1の作動圧用の軸方向油路31bも、入力軸11Aの中心に対してそれぞれ偏心した位置に形成することで、油路31に対しても油路21,22を独立するように構成することができる。   In addition, since the axial oil passage 21b and the axial oil passage 22Ab are formed at positions eccentric from the center of the input shaft 11A, the oil passages 21 and 22 can be configured to be independent from each other. In addition, the axial oil passage 31b for the operating pressure of the clutch C-1 is also formed at a position that is eccentric with respect to the center of the input shaft 11A, so that the oil passages 21 and 22 are also formed with respect to the oil passage 31. It can be configured to be independent.

さらに、導入孔21a,22aは、偏心した位置の各軸方向油路21b,22Abから、入力軸11Aの回転方向ωの前方側に向けて形成されているので、回転時に、隔壁部材4の油路4aから供給される潤滑油を迎え入れる形でより多くの潤滑油を各軸方向油路21b,22Abに導入することができる。   Furthermore, since the introduction holes 21a and 22a are formed from the axial oil passages 21b and 22Ab at the eccentric positions toward the front side in the rotation direction ω of the input shaft 11A, the oil of the partition wall member 4 is rotated during rotation. More lubricating oil can be introduced into each of the axial oil passages 21b and 22Ab in such a manner that the lubricating oil supplied from the passage 4a is received.

そして、隔壁部材4の油路4aに対向する位置に環状の溝部11aを形成し、導入孔21a,22aをその環状の溝部11aに開口させたので、2つの導入孔21a,22aに対してどちらかに偏ることなく、略々均等に潤滑油を導入することができ、即ち、軸方向油路21bと軸方向油路22Ab,22Bbとに潤滑油量の偏りが生じないように潤滑油を導入することができる。また、前側部位AreaFと後側部位AreaRとの必要流量が異なる場合は、導入孔21a,22aの孔径を変えることで、適量な潤滑油を導入することができる。   Since the annular groove portion 11a is formed at a position facing the oil passage 4a of the partition wall member 4 and the introduction holes 21a and 22a are opened in the annular groove portion 11a, which of the two introduction holes 21a and 22a is The lubricating oil can be introduced almost evenly, i.e., the lubricating oil is introduced so that the amount of lubricating oil is not biased between the axial oil passage 21b and the axial oil passages 22Ab, 22Bb. can do. Further, when the required flow rates of the front part AreaF and the rear part AreaR are different, an appropriate amount of lubricating oil can be introduced by changing the hole diameters of the introduction holes 21a and 22a.

なお、以上説明した本実施の形態において、例えばFRタイプの車輌に用いて好適な前進6速段及び後進1速段を達成する自動変速機1に本発明を適用した場合を説明したが、勿論、FFタイプの車輌に用いて好適な自動変速機であってもよく、つまりどのような自動変速機であっても本発明を適用することができる。   In the present embodiment described above, the case where the present invention is applied to the automatic transmission 1 that achieves the sixth forward speed and the first reverse speed suitable for use in, for example, an FR type vehicle has been described. An automatic transmission suitable for use in an FF type vehicle may be used, that is, the present invention can be applied to any automatic transmission.

また、本実施の形態において説明した潤滑油路構造10にあっては、変速機構2の範囲を軸方向2つに設定し、かつ潤滑油を供給する油路として2つの経路で構成したものを説明したが、軸方向範囲や潤滑油路の経路は3つ以上のものであってもよい。   Further, in the lubricating oil passage structure 10 described in the present embodiment, the range of the speed change mechanism 2 is set to two in the axial direction, and the oil passage for supplying lubricating oil is constituted by two routes. As described above, the axial range and the lubricating oil path may be three or more.

更に、本実施の形態においては、導入孔21a,22aを回転方向ωの前方側に向けて傾斜させたものを説明したが、これに限らず、例えば必要な潤滑油量に合わせて導入孔21a,22aのそれぞれの角度を別々に設定してもよい。また、排出孔21c,22cも、各部位における必要な潤滑油量に合わせて別々な角度に設定することも考えられる。   Furthermore, in the present embodiment, the introduction holes 21a and 22a are inclined toward the front side in the rotational direction ω. However, the present invention is not limited to this, and for example, the introduction holes 21a are matched to the required amount of lubricating oil. , 22a may be set separately. It is also conceivable that the discharge holes 21c and 22c are set at different angles according to the required amount of lubricating oil in each part.

本発明を適用し得る自動変速機の側面断面図。1 is a side sectional view of an automatic transmission to which the present invention can be applied. 入力軸を示す図で、(a)は側面断面図、(b)はA−A矢視断面図、(c)はB−B矢視断面図。It is a figure which shows an input shaft, (a) is side surface sectional drawing, (b) is AA arrow sectional drawing, (c) is BB arrow sectional drawing. 本発明に係る各入力軸回転数と潤滑流量との関係を示す図で、(a)は変速機構の前側部位の図、(b)は変速機構の後側部位の図。FIG. 4 is a diagram showing the relationship between each input shaft rotation speed and the lubrication flow rate according to the present invention, where (a) is a diagram of a front part of the transmission mechanism and (b) is a diagram of a rear part of the transmission mechanism. 従来の各入力軸回転数と潤滑流量との関係を示す図で、(a)は変速機構の前側部位の図、(b)は変速機構の後側部位の図。It is a figure which shows the relationship between each conventional input-shaft rotation speed and lubrication flow rate, (a) is a figure of the front part of a transmission mechanism, (b) is a figure of the rear part of a transmission mechanism.

符号の説明Explanation of symbols

1 自動変速機
2 変速機構
4 支持部(隔壁部材)
4a 供給孔(油路)
7 ケース
10 自動変速機の潤滑油路構造
11A 回転軸(入力軸)
11B 回転軸(中間軸)
11a 環状の溝部
21a 導入孔
21b 軸方向油路
21c 排出孔
22a 導入孔
22Ab 軸方向油路
22Bb 軸方向油路
22c 排出孔
31b 作動圧用軸方向油路
AreaF 軸方向範囲(変速機構の前側部位)
AreaR 軸方向範囲(変速機構の後側部位)
C−1 クラッチ
ω 回転方向
DESCRIPTION OF SYMBOLS 1 Automatic transmission 2 Transmission mechanism 4 Support part (partition wall member)
4a Supply hole (oil passage)
7 Case 10 Lubricating oil passage structure 11A for automatic transmission Rotating shaft (input shaft)
11B Rotating shaft (intermediate shaft)
11a annular groove 21a introduction hole 21b axial oil passage 21c discharge hole 22a introduction hole 22Ab axial oil passage 22Bb axial oil passage 22c discharge hole 31b working pressure axial oil passage AreaF axial range (front part of the transmission mechanism)
AreaR axial range (rear part of transmission mechanism)
C-1 Clutch ω rotation direction

Claims (5)

ケースの支持部に対して回転自在に支持された回転軸の周囲に変速機構が配置され、前記回転軸に形成された油路に前記支持部から潤滑油を導入して前記変速機構に向けて排出する自動変速機の潤滑油路構造において、
前記回転軸は、前記支持部から潤滑油を導入する複数の導入孔と、前記各導入孔から導入された潤滑油を軸方向に導通する複数の軸方向油路と、前記各軸方向油路から前記回転軸の外周へ潤滑油を排出する排出孔と、を備え、
前記回転軸の軸方向に対して複数の軸方向範囲を設定し、
前記複数の軸方向油路は、前記複数の軸方向範囲を分担するように異なる長さの経路に形成されると共に、前記排出孔は、前記各軸方向油路が分担した前記各軸方向範囲に位置するように形成された、
ことを特徴とする自動変速機の潤滑油路構造。
A speed change mechanism is disposed around a rotation shaft that is rotatably supported with respect to a support portion of the case, and lubricating oil is introduced into the oil passage formed on the rotation shaft from the support portion toward the speed change mechanism. In the lubricating oil passage structure of the automatic transmission that discharges,
The rotating shaft includes a plurality of introduction holes for introducing lubricating oil from the support portion, a plurality of axial oil passages for conducting the lubricating oil introduced from the introduction holes in the axial direction, and the axial oil passages. And a discharge hole for discharging lubricating oil to the outer periphery of the rotating shaft,
A plurality of axial ranges are set with respect to the axial direction of the rotary shaft;
The plurality of axial oil passages are formed in paths having different lengths so as to share the plurality of axial ranges, and the discharge holes are each axial range shared by the respective axial oil passages. Formed to be located in the
A lubricating oil passage structure for an automatic transmission.
前記複数の軸方向油路は、互いに独立するように、前記回転軸の中心に対してそれぞれ偏心した位置に形成されてなる、
請求項1記載の自動変速機の潤滑油路構造。
The plurality of axial oil passages are formed at positions eccentric from the center of the rotating shaft so as to be independent from each other.
The lubricating oil passage structure for an automatic transmission according to claim 1.
前記変速機構は、クラッチの油圧サーボを有し、
前記回転軸は、前記油圧サーボに作動圧を軸方向に導通する作動圧用軸方向油路を有し、
前記複数の軸方向油路及び前記作動圧用軸方向油路は、互いに独立するように、前記回転軸の中心に対してそれぞれ偏心した位置に形成されてなる、
請求項2記載の自動変速機の潤滑油路構造。
The transmission mechanism has a clutch hydraulic servo,
The rotating shaft has an axial oil passage for operating pressure that conducts operating pressure axially to the hydraulic servo,
The plurality of axial oil passages and the axial oil passage for working pressure are formed at positions that are eccentric with respect to the center of the rotating shaft, so as to be independent from each other.
The lubricating oil passage structure for an automatic transmission according to claim 2.
前記回転軸は、前記変速機構の入力軸からなり、
前記複数の導入孔は、前記偏心した位置の前記各軸方向油路から、前記入力軸の回転方向前方側に向けて形成されてなる、
請求項2または3記載の自動変速機の潤滑油路構造。
The rotating shaft is composed of an input shaft of the speed change mechanism,
The plurality of introduction holes are formed from the axial oil passages at the eccentric positions toward the front side in the rotation direction of the input shaft.
4. A lubricating oil passage structure for an automatic transmission according to claim 2 or 3.
前記回転軸は、外周部分にあって前記支持部に設けられた潤滑油の供給孔に対向する位置に環状の溝部を有し、
前記複数の導入孔は、その外周側が前記環状の溝部に開口してなる、
請求項1ないし4のいずれか記載の自動変速機の潤滑油路構造。
The rotating shaft has an annular groove portion at a position facing the lubricating oil supply hole provided in the support portion in the outer peripheral portion;
The plurality of introduction holes are formed such that an outer peripheral side thereof is opened in the annular groove portion.
The lubricating oil passage structure for an automatic transmission according to any one of claims 1 to 4.
JP2008282239A 2008-10-31 2008-10-31 Lubricating oil passage structure for automatic transmission Pending JP2010107015A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110274005A (en) * 2018-03-14 2019-09-24 本田技研工业株式会社 The lubricating oil supply structure of speed changer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63157565U (en) * 1987-04-01 1988-10-17
JP2007032624A (en) * 2005-07-25 2007-02-08 Toyota Motor Corp Vehicular automatic transmission
JP2007147021A (en) * 2005-11-29 2007-06-14 Aisin Aw Co Ltd Oil passage structure for vehicular transmission device
JP2007225009A (en) * 2006-02-23 2007-09-06 Honda Motor Co Ltd Lubricating oil feeding device of transmission

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63157565U (en) * 1987-04-01 1988-10-17
JP2007032624A (en) * 2005-07-25 2007-02-08 Toyota Motor Corp Vehicular automatic transmission
JP2007147021A (en) * 2005-11-29 2007-06-14 Aisin Aw Co Ltd Oil passage structure for vehicular transmission device
JP2007225009A (en) * 2006-02-23 2007-09-06 Honda Motor Co Ltd Lubricating oil feeding device of transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110274005A (en) * 2018-03-14 2019-09-24 本田技研工业株式会社 The lubricating oil supply structure of speed changer
CN110274005B (en) * 2018-03-14 2022-09-13 本田技研工业株式会社 Lubricating oil supply structure of transmission

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