JP2010054025A - Lubricating structure for transmission - Google Patents

Lubricating structure for transmission Download PDF

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JP2010054025A
JP2010054025A JP2008222403A JP2008222403A JP2010054025A JP 2010054025 A JP2010054025 A JP 2010054025A JP 2008222403 A JP2008222403 A JP 2008222403A JP 2008222403 A JP2008222403 A JP 2008222403A JP 2010054025 A JP2010054025 A JP 2010054025A
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transmission
casing
oil
lubricating oil
input shaft
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Japanese (ja)
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Yoshinari Shimada
吉成 嶌田
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Aisin AI Co Ltd
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Aisin AI Co Ltd
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Priority to JP2008222403A priority Critical patent/JP2010054025A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0423—Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0493—Gearings with spur or bevel gears
    • F16H57/0494—Gearings with spur or bevel gears with variable gear ratio or for reversing rotary motion

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prevent shortage of lubricating oil supplied to a lubricating oil passage arranged in a transmission even when a sufficient amount of lubricating oil is not scattered by transmission gears in a casing owing to low rotation speed of an engine. <P>SOLUTION: A lubricating structure for a transmission has: an axial hole 12b opened on one end of an input shaft 12 while being coaxially formed on the input shaft 12 supported in a casing 10; the lubricating oil passage 12a organized by the axial hole 12b and a radial hole 12c for interconnection with an outer peripheral surface in a position arranged on transmission gears 23a-26a while being radially formed on the input shaft 12; and a groove-shaped oil receiver 31 fixed on the casing 10 and inclined so as to cause an one end side of the input shaft 12 to be set as a lower side. A projected ridge 10d to an oil receiver 31 side in a position as an upper side of the oil receiver 31 is formed on an upper wall of the casing 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、変速機の各部を潤滑する変速機の潤滑構造に関するものである。   The present invention relates to a lubrication structure for a transmission that lubricates each part of the transmission.

従来、変速機の潤滑構造としては、例えば特許文献１に示す技術がある。この潤滑構造が適用される変速機は、底部に潤滑油を収容するケーシング内に同軸的に配置された入力軸と出力軸と、これら両軸の下方において両軸と平行に配置されたカウンタ軸と、各変速段位にそれぞれ対応して入力軸及び出力軸とカウンタ軸とに対をなして設けられ互いに噛合する複数対の変速歯車と、入力軸に同軸的に形成されて入力軸の一端部に開口された軸内オイル通路と、入力軸に径方向に形成されてこの軸内オイル通路から分岐して入力軸に設けられた変速歯車の軸受部に開口される分岐オイル孔と、ケーシング内で固定されて軸内オイル通路の開口側を下側として傾斜させて軸方向に延びる樋状のオイルレシーバとを備えている。   Conventionally, as a lubricating structure of a transmission, for example, there is a technique disclosed in Patent Document 1. A transmission to which this lubrication structure is applied includes an input shaft and an output shaft that are coaxially disposed in a casing that accommodates lubricating oil at the bottom, and a counter shaft that is disposed below these shafts in parallel with both shafts. And a plurality of pairs of transmission gears that are provided in pairs with the input shaft, the output shaft, and the counter shaft corresponding to each gear position, and one end portion of the input shaft that is formed coaxially with the input shaft. An oil passage in the shaft opened in the shaft, a branch oil hole formed in the input shaft in a radial direction and branched from the oil passage in the shaft and opened in a bearing portion of a transmission gear provided in the input shaft; And an eaves-like oil receiver that extends in the axial direction with the opening side of the oil passage in the shaft inclined downward.

この変速機においては、ケーシングの底部に収容した潤滑油をカウンタ軸に設けた変速歯車によりかき上げてケーシング内に飛散させて変速機の各部を潤滑しており、飛散した潤滑油の一部はケーシングの内壁に付着してこの内壁に沿って流れ落ちるが、残る一部はオイルレシーバで受けられて軸内オイル通路から分岐オイル孔を通って変速歯車の軸受部に供給され、変速歯車の軸受部及びこの近傍部分を潤滑する。
特開平１０−１０３４２４号公報 In this transmission, the lubricating oil contained in the bottom of the casing is lifted up by a transmission gear provided on the countershaft and scattered in the casing to lubricate each part of the transmission, and a part of the scattered lubricating oil is Although it adheres to the inner wall of the casing and flows down along the inner wall, the remaining part is received by the oil receiver and supplied from the oil passage in the shaft to the bearing portion of the transmission gear through the branch oil hole. And lubricate the vicinity.
Japanese Patent Laid-Open No. 10-103424

上記のような変速機においては、各軸が高速で回転しているときには、潤滑油がケーシング内で多く飛散するのでオイルレシーバにより十分な量の潤滑油を受けることができ、これにより変速歯車の軸受部及びこの近傍部分を十分に潤滑することができるが、各軸の回転速度が低速のときにはケーシング内に飛散する潤滑油の量が少なく、飛散した潤滑油はケーシングの内壁に付着したまま流れ落ちてオイルレシーバ内に入らないので、オイルレシーバで十分な量の潤滑油を受けることができず、変速歯車の軸受部及びこの近傍部分が潤滑不足となることがあった。本発明は、このような問題を解決することを目的とする。   In the transmission as described above, when each shaft rotates at a high speed, a large amount of lubricating oil is scattered in the casing, so that a sufficient amount of lubricating oil can be received by the oil receiver. The bearing and its neighboring parts can be adequately lubricated, but when the rotational speed of each shaft is low, the amount of lubricating oil scattered in the casing is small, and the scattered lubricating oil flows down while adhering to the inner wall of the casing. Since the oil receiver does not enter the oil receiver, the oil receiver cannot receive a sufficient amount of lubricating oil, and the bearing portion of the transmission gear and the vicinity thereof may be insufficiently lubricated. The present invention aims to solve such problems.

このため、本発明による変速機の潤滑構造は、底部に潤滑油を収容するケーシングと、ケーシング内で互いに平行に支持された複数の変速軸と、これら変速軸に設けられてこれら変速軸を選択的に連結する複数対の変速歯車と、変速軸に同軸的に形成されて変速軸の一端部に開口された軸方向穴と、変速軸に径方向に形成されて軸方向穴と変速軸の外周面とを連通す径方向穴とからなる潤滑油路と、ケーシング内で変速軸の軸方向に延在して固定され変速軸の上記一端部側が下側となるように傾斜させた溝形のオイルレシーバとを備え、ケーシング底部の潤滑油を複数対の変速歯車によりかき上げてケーシング内に飛散させて、飛散した潤滑油をオイルレシーバにより受けて軸方向穴の開口に供給するようにした変速機の潤滑構造において、ケーシングの上部壁にはオイルレシーバの上側となる位置にオイルレシーバ側に向けて突出する突条を形成したことを特徴とする変速機の潤滑構造とを備えたことを特徴とする。   For this reason, the transmission lubrication structure according to the present invention has a casing for containing lubricating oil at the bottom, a plurality of transmission shafts supported in parallel in the casing, and the transmission shafts provided on the transmission shafts to select these transmission shafts. A plurality of pairs of transmission gears connected to each other, an axial hole formed coaxially with the transmission shaft and opened at one end of the transmission shaft, and formed with a radial direction on the transmission shaft and formed between the axial hole and the transmission shaft. Lubricating oil passage composed of a radial hole communicating with the outer peripheral surface, and a groove shape that extends and is fixed in the casing in the axial direction of the transmission shaft and is inclined so that the one end side of the transmission shaft is on the lower side. The oil at the bottom of the casing is lifted up by a plurality of pairs of transmission gears and scattered in the casing, and the scattered lubricating oil is received by the oil receiver and supplied to the opening of the axial hole. In the lubrication structure of the transmission, The top wall of the pacing, characterized in that a lubrication structure of a transmission, characterized in that the formation of the ridge that protrudes toward the oil receiver side position where the upper oil receiver.

本発明によれば、ケーシングの上部壁にはオイルレシーバの上側となる位置にオイルレシーバ側に向けて突出する突条を形成しているので、ケーシングの底部に収容した潤滑油を複数対の変速歯車によりかき上げてケーシング内に飛散させたときに、ケーシングの上部壁に付着して流れ落ちる潤滑油が突条で離れてオイルレシーバ内に落ち込むようになる。これにより、変速軸の回転速度が低くてケーシング内に十分な量の潤滑油が飛散しないときでも、ケーシングの上部壁に沿って流れ落ちる潤滑油を突条により効率よくオイルレシーバに送ることができて変速機の各部が潤滑不足とならない。   According to the present invention, the upper wall of the casing is formed with a protrusion that protrudes toward the oil receiver at a position on the upper side of the oil receiver. When the gear is lifted up by a gear and scattered in the casing, the lubricating oil that adheres to the upper wall of the casing and flows down is separated by a protrusion and falls into the oil receiver. As a result, even when the rotational speed of the transmission shaft is low and a sufficient amount of lubricating oil does not scatter in the casing, the lubricating oil flowing down along the upper wall of the casing can be efficiently sent to the oil receiver by the ridges. Each part of the transmission will not be insufficiently lubricated.

以下に、図１及び図２により、本発明による変速機の潤滑構造を実施するための最良の形態を説明する。この実施形態による潤滑構造が適用される変速機は、図１に示すように、ケーシング１０内にころがり軸受け１１ａを介して回転可能に支持された入力軸１２と、この入力軸１２の下側でころがり軸受け１１ｂを介して回転可能に支持された出力軸１３とを備えている。   The best mode for carrying out the lubricating structure of the transmission according to the present invention will be described below with reference to FIGS. As shown in FIG. 1, the transmission to which the lubricating structure according to this embodiment is applied includes an input shaft 12 rotatably supported in a casing 10 via a rolling bearing 11 a, and a lower side of the input shaft 12. And an output shaft 13 rotatably supported through a rolling bearing 11b.

図１に示すように、入力軸１２と出力軸１３とには、これらを連結する６対の変速歯車２１〜２６が設けられている。これら６対の変速歯車２１〜２６のうち、入力軸１２には、駆動側変速歯車２１ａ，２２ａが一体的に設けられており、これら駆動側変速歯車２１ａ，２２ａは、出力軸１３に回転自在に設けられた従動側変速歯車２１ｂ，２２ｂと常時噛合している。従動側変速歯車２１ｂ，２２ｂは、それらの間となる出力軸１３に一体的に設けられたクラッチハブ１４に軸線方向摺動可能にスプライン係合されて図示しないフォークにより軸方向に移動する切替スリーブ２７により出力軸１３に選択的に連結されて変速を行うようになっている。また、入力軸１２には、駆動側変速歯車２３ａ〜２６ａが回転可能に設けられており、これら駆動側変速歯車２３ａ〜２６ａは、出力軸１３に一体的に設けられた従動側変速歯車２３ｂ〜２６ｂと常時噛合している。駆動側変速歯車２３ａ，２４ａ及び駆動側変速歯車２５ａ，２６ａは、それぞれの間となる入力軸１２に一体的に設けられたクラッチハブ１５，１６に軸線方向摺動可能にスプライン係合されて図示しないフォークにより軸方向に移動する切替スリーブ２８，２９により入力軸１２にそれぞれ選択的に連結されて変速を行うようになっている。なお、本実施形態における変速機は、シンクロメッシュタイプのものであるが、シンクロナイザリング等の同期装置は公知であるので省略する。   As shown in FIG. 1, the input shaft 12 and the output shaft 13 are provided with six pairs of transmission gears 21 to 26 that connect them. Of these six pairs of transmission gears 21 to 26, the input side shaft 12 is integrally provided with drive side transmission gears 21 a and 22 a, and these drive side transmission gears 21 a and 22 a are rotatable on the output shaft 13. Are always meshed with driven transmission gears 21b, 22b. The driven transmission gears 21b and 22b are switching sleeves that are spline-engaged in a slidable manner in the axial direction with a clutch hub 14 provided integrally with the output shaft 13 between them and moved in the axial direction by a fork (not shown). 27 is selectively connected to the output shaft 13 for shifting. The input shaft 12 is provided with drive side transmission gears 23 a to 26 a so as to be rotatable. The drive side transmission gears 23 a to 26 a are driven side transmission gears 23 b to 23 b provided integrally with the output shaft 13. 26b is always meshed. The drive-side transmission gears 23a, 24a and the drive-side transmission gears 25a, 26a are spline-engaged in the axial direction so as to be slidable on clutch hubs 15, 16 provided integrally with the input shaft 12 between them. The changeover sleeves 28 and 29 that move in the axial direction by the forks that are not connected are selectively connected to the input shaft 12 for shifting. The transmission in the present embodiment is of the synchromesh type, but a synchronizer such as synchronizer ring is well known and will not be described.

図１及び図２に示すように、入力軸１２には、左側となる一端部側の端面から駆動側変速歯車２２ａを越える位置に達する軸方向穴１２ｂが同軸的に形成されており、この軸方向穴１２ｂは入力軸１２の一端部の端面に開口している。また、入力軸１２には、軸方向穴１２ｂと各駆動側変速歯車２３ａ〜２６ａを回転自在に支持する位置の外周面とを連通する複数の半径方向の径方向穴１２ｃが形成されている。これら軸方向穴１２ｂと径方向穴１２ｃにより入力軸１２の潤滑油路１２ａが構成されている。   As shown in FIGS. 1 and 2, the input shaft 12 is coaxially formed with an axial hole 12b that reaches the position beyond the drive-side transmission gear 22a from the end face on the left end side. The direction hole 12 b is opened on the end surface of one end of the input shaft 12. Further, the input shaft 12 is formed with a plurality of radial radial holes 12c that communicate the axial hole 12b and the outer peripheral surface of the position where the drive side transmission gears 23a to 26a are rotatably supported. A lubricating oil passage 12a of the input shaft 12 is constituted by the axial hole 12b and the radial hole 12c.

入力軸１２と同様に、出力軸１３には、左側となる一端部側の端面から他端部側に延びる軸方向穴１３ｂが同軸的に形成されており、この軸方向穴１３ｂは出力軸１３の一端部の端面に開口している。また、出力軸１３には、軸方向穴１３ｂと各従動側変速歯車２１ａ，２２ａを回転自在に支持する位置の外周面とを連通する複数の半径方向の径方向穴１３ｃが形成されている。これら軸方向穴１３ｂと径方向穴１３ｃにより出力軸１３の潤滑油路１３ａが構成されている。   Similar to the input shaft 12, the output shaft 13 is coaxially formed with an axial hole 13 b extending from the end face on one end side on the left side to the other end side, and the axial hole 13 b is formed on the output shaft 13. It opens to the end surface of the one end part. Further, the output shaft 13 is formed with a plurality of radial radial holes 13c communicating with the axial hole 13b and the outer peripheral surface at a position where the driven transmission gears 21a and 22a are rotatably supported. A lubricating oil passage 13a of the output shaft 13 is constituted by the axial hole 13b and the radial hole 13c.

図１に示すように、ケーシング１０の左側の端部１０ａの内側には、ころがり軸受け１１ａを介して支持される入力軸１２の一端部の端面と対向する位置に凹部１０ｂと、ころがり軸受け１１ｂを介して支持される出力軸１３の一端部の端面と対向する位置に凹部１０ｃが形成されている。これら凹部１０ｂ、１０ｃ内には筒部１７ａ，１８ａとこれら筒部１７ａ，１８ａの一端縁から半径方向外向きに延びるフランジ部１７ｂ，１８ｂよりなる案内部材１７，１８が設けられている。各案内部材１７，１８は、各フランジ部１７ｂ，１８ｂと各凹部１０ｂ，１０ｃとの内面との間にそれぞれ空隙Ｓ１，Ｓ２をおくようにして、各筒部１７ａ，１８ａが各軸１２，１３の各軸方向穴１２ｂ，１３ｂ内に多少の隙間をおいて回転自在に挿入されて、各フランジ部１７ｂ，１８ｂの外周部がケーシング１０の端部１０ａの内側と各ころがり軸受け１１ａ，１１ｂとの間に嵌合固着されている。   As shown in FIG. 1, a recess 10 b and a rolling bearing 11 b are provided on the inner side of the left end portion 10 a of the casing 10 at a position facing the end surface of one end portion of the input shaft 12 supported via the rolling bearing 11 a. A concave portion 10c is formed at a position facing the end face of one end portion of the output shaft 13 supported via the intermediate shaft. In these recesses 10b and 10c, there are provided guide members 17 and 18 comprising cylindrical portions 17a and 18a and flange portions 17b and 18b extending radially outward from one end edges of the cylindrical portions 17a and 18a. The guide members 17 and 18 are provided with gaps S1 and S2 between the flanges 17b and 18b and the inner surfaces of the recesses 10b and 10c, respectively. The flanges 17b and 18b are inserted into the axial holes 12b and 13b so as to be freely rotatable, with the outer peripheral portions of the flanges 17b and 18b being formed between the inner side of the end 10a of the casing 10 and the rolling bearings 11a and 11b. It is fitted and fixed between.

図１及び図２に示すように、ケーシング１０内の上部には、ケーシング１０の側壁に近接する位置に入力軸１２の軸方向に延びる上側が開放された溝形の入力軸用オイルレシーバ（オイルレシーバ）３１が設けられている。この入力軸用オイルレシーバ３１は、入力軸１２の軸方向穴１２ｂが開口された一端部側が下側となるように下方に傾斜してケーシング１０に支持されており、この入力軸用オイルレシーバ３１の下側となる左端部は空隙Ｓ１内に連通している。図２に示すように、ケーシング１０の上部壁には入力軸用オイルレシーバ３１の上側に沿った位置に入力軸用オイルレシーバ３１に向けて下側に突出する突条１０ｄが形成されている。   As shown in FIG. 1 and FIG. 2, a groove-shaped input shaft oil receiver (oil) whose upper side extending in the axial direction of the input shaft 12 is opened at a position close to the side wall of the casing 10 at an upper portion in the casing 10. Receiver) 31 is provided. The input shaft oil receiver 31 is supported by the casing 10 so as to be inclined downward so that one end side where the axial hole 12b of the input shaft 12 is opened is on the lower side. The lower left end portion is in communication with the gap S1. As shown in FIG. 2, a protrusion 10 d that protrudes downward toward the input shaft oil receiver 31 is formed on the upper wall of the casing 10 at a position along the upper side of the input shaft oil receiver 31.

図１及び図２に示すように、ケーシング１０内の上下方向の中間部には、ケーシング１０の側壁に近接する位置に出力軸１３の軸方向に延びる上側が開放された溝形の出力軸用オイルレシーバ３２が設けられている。出力軸用オイルレシーバ３２は、出力軸１３の軸方向穴１３ｂが開口された一端部側が下側となるように下方に傾斜してケーシング１０に支持されており、この出力軸用オイルレシーバ３２の下側となる左端部は空隙Ｓ２内に連通している。なおこの実施形態では、ケーシング１０上部に設けられた入力軸用オイルレシーバ３１と異なり、出力軸用オイルレシーバ３２は、ケーシング１０の上下方向の中間部に配置されているので、出力軸用オイルレシーバ３２は各変速歯車２１ｂ〜２６ｂによりかき上げられた潤滑油を十分に受けることができるので、入力軸用オイルレシーバ３１のようにその上側に突条１０ｄを設けていないが、出力軸用オイルレシーバ３２により潤滑油を十分に受けることができないときにはその上側となる位置のケーシング１０に突条を設けてもよい。   As shown in FIGS. 1 and 2, in the middle part in the vertical direction in the casing 10, for the groove-shaped output shaft in which the upper side extending in the axial direction of the output shaft 13 is opened at a position close to the side wall of the casing 10. An oil receiver 32 is provided. The output shaft oil receiver 32 is supported by the casing 10 so as to be inclined downward so that one end side where the axial hole 13b of the output shaft 13 is opened is on the lower side. The lower left end portion communicates with the gap S2. In this embodiment, unlike the input shaft oil receiver 31 provided in the upper part of the casing 10, the output shaft oil receiver 32 is disposed in the middle portion of the casing 10 in the vertical direction. 32 can sufficiently receive the lubricating oil pumped up by each of the transmission gears 21b to 26b. Therefore, unlike the input shaft oil receiver 31, the protrusion 10d is not provided on the upper side, but the output shaft oil receiver When the lubricating oil cannot be sufficiently received by 32, a protrusion may be provided on the casing 10 at the upper position.

図１及び図２に示すように、ケーシング１０の底部空間には、６対の変速歯車２１〜２６のうち下部に配置した変速歯車２１ｂ〜２６ｂの略下半部を囲うようにして出力軸１３の軸線方向に沿って延在するオイルセパレータ１９が設けられている。オイルセパレータ１９は、出力軸１３の長手方向の両端をシール１９ａにより封止した状態にしてケーシング１０に支持されている。オイルセパレータ１９は、出力軸１３の軸線方向と直交する方向の断面形状が略Ｕ字形をしており、従動側変速歯車２３ｂ，２４ｂとの間及び従動側変速歯車２５ｂ，２６ｂとの間のオイルセパレータ１９は、出力軸１３に沿うように小さなＵ字形となっている。オイルセパレータ１９の下部には、各変速歯車２１ｂ〜２６ｂの下側となる位置に、ケーシング１０底部の空間に連通する６つの潤滑孔１９ｂが形成されており、各変速歯車２１ｂ〜２６ｂには、これら各潤滑孔１９ｂからケーシング１０の底部とオイルセパレータ１９との間に収容された潤滑油が供給される。   As shown in FIGS. 1 and 2, in the bottom space of the casing 10, the output shaft 13 is provided so as to surround substantially lower half portions of the transmission gears 21 b to 26 b arranged in the lower part of the six transmission gears 21 to 26. An oil separator 19 extending along the axial direction is provided. The oil separator 19 is supported by the casing 10 with both ends in the longitudinal direction of the output shaft 13 sealed with seals 19a. The oil separator 19 has a substantially U-shaped cross-section in a direction orthogonal to the axial direction of the output shaft 13, and oil between the driven transmission gears 23b and 24b and between the driven transmission gears 25b and 26b. The separator 19 has a small U shape along the output shaft 13. Under the oil separator 19, six lubrication holes 19b communicating with the space of the bottom of the casing 10 are formed at positions below the transmission gears 21b to 26b, and the transmission gears 21b to 26b include The lubricating oil accommodated between the bottom part of the casing 10 and the oil separator 19 is supplied from each of the lubricating holes 19b.

上記のように構成した変速機の潤滑構造における作用及び効果について説明する。この変速機では、各変速歯車２１ａ〜２６ａ、２１ｂ〜２６ｂが回転していないときには、ケーシング１０底部とオイルセパレータ１９との間に収容された潤滑油は、各潤滑孔１９ｂからオイルセパレータ１９内に流入している。変速機を駆動する自動車のエンジンにより入力軸１２が回転駆動されると、各変速歯車２１ｂ〜２６ｂはオイルセパレータ１９内の潤滑油をかき上げて飛散させ、各変速歯車２１ａ〜２６ａ、２１ｂ〜２６ｂ、切替スリーブ２７〜２９及びこれら切替スリーブ２７〜２９を軸方向に移動させる図示しないフォーク等の変速機の各部を跳ねかけ潤滑する。   The operation and effect of the lubricating structure of the transmission configured as described above will be described. In this transmission, when each of the transmission gears 21a to 26a and 21b to 26b is not rotating, the lubricating oil accommodated between the bottom of the casing 10 and the oil separator 19 enters the oil separator 19 from each lubricating hole 19b. Inflow. When the input shaft 12 is rotationally driven by the engine of the automobile that drives the transmission, the transmission gears 21b to 26b scoop up and scatter the lubricating oil in the oil separator 19, and the transmission gears 21a to 26a and 21b to 26b. The switching sleeves 27 to 29 and the parts of the transmission such as a fork (not shown) that move the switching sleeves 27 to 29 in the axial direction are splashed and lubricated.

このとき、入力軸用オイルレシーバ３１には、飛散した潤滑油の一部が直接流入し、また、図２のケーシング１０の上部にある矢印に示すように、ケーシング１０の上部壁に付着した潤滑油が側壁側に沿って流れ落ちるときに突条１０ｄにより上部壁から離れて入力軸用オイルレシーバ３１内に流入する。入力軸用オイルレシーバ３１内に入った潤滑油は、その傾斜により空隙Ｓ１に入り、空隙Ｓ１から案内部材１７を通って入力軸１２の軸方向穴１２ｂに流入し、各径方向穴１２ｃから各変速歯車２３ａ〜２６ｂを回転自在に支持する外周面に供給されて各変速歯車２３ａ〜２６ｂの軸受部、切替スリーブ２８，２９及びこれら切替スリーブ２８，２９を軸方向に移動させる図示しないフォーク等の変速機の各部を潤滑する。   At this time, a part of the scattered lubricating oil directly flows into the oil receiver 31 for the input shaft, and lubrication adhered to the upper wall of the casing 10 as indicated by an arrow at the upper portion of the casing 10 in FIG. When the oil flows down along the side wall, the oil is separated from the upper wall by the protrusion 10d and flows into the oil receiver 31 for the input shaft. Lubricating oil that has entered the oil receiver 31 for the input shaft enters the gap S1 due to its inclination, flows into the axial hole 12b of the input shaft 12 from the gap S1, passes through the guide member 17, and passes through each radial hole 12c. Such as a fork (not shown) that is supplied to the outer peripheral surface that rotatably supports the transmission gears 23a to 26b, moves the bearings of the transmission gears 23a to 26b, the switching sleeves 28 and 29, and the switching sleeves 28 and 29 in the axial direction. Lubricate each part of the transmission.

また、出力軸用オイルレシーバ３２にも飛散した潤滑油の一部が直接流入し、出力軸用オイルレシーバ３２内の潤滑油はその傾斜により空隙Ｓ２に入る。空隙Ｓ２内の潤滑油は案内部材１８を通って出力軸１３の軸方向穴１３ｂに入り、各径方向穴１３ｃから各変速歯車２１ｂ，２２ｂの軸受部、切替スリーブ２７及びこの切替スリーブ２７を軸方向に移動させるフォーク等の変速機の各部を潤滑する。   Further, a part of the scattered lubricating oil directly flows into the output shaft oil receiver 32, and the lubricating oil in the output shaft oil receiver 32 enters the gap S2 due to the inclination thereof. Lubricating oil in the gap S2 passes through the guide member 18 and enters the axial hole 13b of the output shaft 13. From each radial hole 13c, the bearings of the transmission gears 21b and 22b, the switching sleeve 27, and the switching sleeve 27 are pivoted. Lubricate each part of the transmission such as a fork that moves in the direction.

このように、本発明による変速機の潤滑構造によれば、ケーシング１０の上部壁には入力軸用オイルレシーバ３１の上側に沿った位置に入力軸用オイルレシーバ３１側に向けて突出する突条１０ｄが形成されているので、ケーシング１０の底部に収容した潤滑油を複数対の変速歯車２１〜２６によりかき上げてケーシング１０内に飛散させたときに、ケーシング１０の上部壁に付着して流れ落ちる潤滑油が突条１０ｄにより上部壁から離れて入力軸用オイルレシーバ３１内に落ち込むようになる。これにより、入力軸１２の回転速度が低くて潤滑油がケーシング１０内に十分に飛散しないときでも、ケーシング１０の上部壁に沿って流れ落ちる潤滑油を突条１０ｄにより効率よく入力軸用オイルレシーバ３１に送ることができて各変速歯車２１〜２６の軸受部、切替スリーブ２８，２９及びこれら切替スリーブ２８，２９を軸方向に移動させる図示しないフォーク等の近傍部分が潤滑不足とならない。   As described above, according to the lubricating structure of the transmission according to the present invention, the protrusion protruding toward the input shaft oil receiver 31 at the position along the upper side of the input shaft oil receiver 31 on the upper wall of the casing 10. Since 10d is formed, when the lubricating oil accommodated in the bottom of the casing 10 is lifted up by the plurality of pairs of transmission gears 21 to 26 and scattered in the casing 10, it adheres to the upper wall of the casing 10 and flows down. The lubricating oil is separated from the upper wall by the protrusion 10d and falls into the oil receiver 31 for the input shaft. Thereby, even when the rotational speed of the input shaft 12 is low and the lubricating oil does not sufficiently scatter in the casing 10, the lubricating oil that flows down along the upper wall of the casing 10 is efficiently input to the oil receiver 31 for the input shaft by the protrusion 10d. In the vicinity of a bearing portion of each of the transmission gears 21 to 26, the switching sleeves 28 and 29, and a fork (not shown) that moves the switching sleeves 28 and 29 in the axial direction is not insufficiently lubricated.

本発明による変速機の一実施形態の要部を示す断面図である。It is sectional drawing which shows the principal part of one Embodiment of the transmission by this invention. 図１のＡ−Ａ断面図である。It is AA sectional drawing of FIG.

符号の説明Explanation of symbols

１０…ケーシング、１０ｄ…突条、１２，１３…変速軸（入力軸、出力軸）、１２ａ…潤滑油通路、１２ｂ…軸方向穴、１２ｃ…径方向穴、２１ａ，２１ｂ〜２６ａ，２６ｂ…変速歯車、３１…オイルレシーバ。   DESCRIPTION OF SYMBOLS 10 ... Casing, 10d ... Projection, 12, 13 ... Transmission shaft (input shaft, output shaft), 12a ... Lubricating oil passage, 12b ... Axial hole, 12c ... Radial hole, 21a, 21b-26a, 26b ... Shift Gear, 31 ... Oil receiver.

Claims (1)

底部に潤滑油を収容するケーシングと、
前記ケーシング内で互いに平行に支持された複数の変速軸と、
これら変速軸に設けられてこれら変速軸を選択的に連結する複数対の変速歯車と、
前記変速軸に同軸的に形成されて前記変速軸の一端部に開口された軸方向穴と、前記変速軸に径方向に形成されて前記軸方向穴と前記変速軸の外周面とを連通す径方向穴とからなる潤滑油路と、
前記ケーシング内で前記変速軸の軸方向に延在して固定され前記変速軸の前記一端部側が下側となるように傾斜させた溝形のオイルレシーバとを備え、
前記ケーシング底部の潤滑油を前記複数対の変速歯車によりかき上げて前記ケーシング内に飛散させて、飛散した潤滑油を前記オイルレシーバにより受けて前記軸方向穴の開口に供給するようにした変速機の潤滑構造において、
前記ケーシングの上部壁には前記オイルレシーバの上側となる位置に前記オイルレシーバ側に向けて突出する突条を形成したことを特徴とする変速機の潤滑構造。 A casing containing lubricating oil at the bottom,
A plurality of transmission shafts supported parallel to each other in the casing;
A plurality of pairs of transmission gears provided on the transmission shafts to selectively connect the transmission shafts;
An axial hole formed coaxially with the transmission shaft and opened at one end of the transmission shaft, and a radial hole formed in the transmission shaft in a radial direction to communicate the axial hole and the outer peripheral surface of the transmission shaft. A lubricating oil passage composed of a radial hole;
A groove-shaped oil receiver that extends in the axial direction of the transmission shaft in the casing and is inclined so that the one end side of the transmission shaft is on the lower side;
A transmission in which the lubricating oil at the bottom of the casing is lifted by the plurality of pairs of transmission gears and scattered in the casing, and the scattered lubricating oil is received by the oil receiver and supplied to the opening of the axial hole. In the lubrication structure of
A lubricating structure for a transmission, wherein a protrusion that protrudes toward the oil receiver is formed at a position on an upper side of the oil receiver on an upper wall of the casing.
JP2008222403A 2008-08-29 2008-08-29 Lubricating structure for transmission Pending JP2010054025A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016061351A (en) * 2014-09-17 2016-04-25 アイシン・エーアイ株式会社 Lubrication structure of transmission
DE102014115517A1 (en) * 2014-10-24 2016-05-12 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Fluid guiding device and motor vehicle transmission
CN108474464A (en) * 2015-12-24 2018-08-31 爱信Ai株式会社 Oily receiver and method for manufacturing oily receiver
CN110799778A (en) * 2017-06-26 2020-02-14 五十铃自动车株式会社 Lubricating oil purification device of transmission
CN110799777A (en) * 2017-06-26 2020-02-14 五十铃自动车株式会社 Lubricating oil purification device of transmission

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016061351A (en) * 2014-09-17 2016-04-25 アイシン・エーアイ株式会社 Lubrication structure of transmission
DE102014115517A1 (en) * 2014-10-24 2016-05-12 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Fluid guiding device and motor vehicle transmission
CN108474464A (en) * 2015-12-24 2018-08-31 爱信Ai株式会社 Oily receiver and method for manufacturing oily receiver
CN108474464B (en) * 2015-12-24 2020-12-11 爱信艾达株式会社 Oil receptacle and method for producing an oil receptacle
CN110799778A (en) * 2017-06-26 2020-02-14 五十铃自动车株式会社 Lubricating oil purification device of transmission
CN110799777A (en) * 2017-06-26 2020-02-14 五十铃自动车株式会社 Lubricating oil purification device of transmission
CN110799778B (en) * 2017-06-26 2023-02-28 五十铃自动车株式会社 Lubricating oil purification device of transmission

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