JPH0211931A - Drive force transmitting device - Google Patents

Drive force transmitting device

Info

Publication number
JPH0211931A
JPH0211931A JP16135988A JP16135988A JPH0211931A JP H0211931 A JPH0211931 A JP H0211931A JP 16135988 A JP16135988 A JP 16135988A JP 16135988 A JP16135988 A JP 16135988A JP H0211931 A JPH0211931 A JP H0211931A
Authority
JP
Japan
Prior art keywords
chamber
pressure
piston
clutch means
lubricant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16135988A
Other languages
Japanese (ja)
Inventor
Masaji Yamamoto
正司 山本
Toshibumi Sakai
俊文 酒井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Toyoda Koki KK
Original Assignee
Toyota Motor Corp
Toyoda Koki KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp, Toyoda Koki KK filed Critical Toyota Motor Corp
Priority to JP16135988A priority Critical patent/JPH0211931A/en
Publication of JPH0211931A publication Critical patent/JPH0211931A/en
Pending legal-status Critical Current

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  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

PURPOSE:To keep pressure constant at all times by equipping a chamber accommodating a clutch with a communication line in communication with the external space, fitting the communication line with a filter which allows passage of gas merely, and by releasing the expanded air in the lubricant from the chamber. CONSTITUTION:A multi-plate clutch 25 is accommodated in a chamber filled with lubricant and put in frictional engagement through the action of a piston 24 actuated by the pressure in a pressure chamber 43. This chamber 27 is provided with a communication line 46 in communication with the exterior space and this line 46 is fitted with a filter 45 which allows penetration of only gases. Volume expansion of a combustion gas from lubricant is generated in this chamber 27 by the heat emitted by friction engagement of this multi-plate clutch 25, but the combustion gas or expanded air in the lubricant are exhausted to outside from the communication line 46 through the mentioned filter 45. Air is inhaled from outside with drop of the temp. to keep inside the chamber 27 always at proper pressure, so that no malfunction will occur.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、相対回転可能な2軸の間に差動回転が生じた
ときに2軸の間で回転動力を伝達するようにした駆動力
伝達装置に関するものである。
[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a driving force that transmits rotational power between two relatively rotatable shafts when differential rotation occurs between the two shafts. This invention relates to a transmission device.

〈従来の技術〉 一般に、前、後輪間でトルクを伝達する4輪駆動用の駆
動力伝達装置、あるいは左、右輪間で、トルクを伝達す
る差動制限用の駆動力伝達装置等においては、通常トル
ク伝達用に多板クラッチが設けられ、この多板クラッチ
は前、後輪あるいは左、右輪の差動回転に応じた圧力が
作用されるピストンにより摩擦係合されるようになって
いる。
<Prior art> Generally, in a four-wheel drive drive force transmission device that transmits torque between the front and rear wheels, or a drive force transmission device for differential limiting that transmits torque between the left and right wheels, etc. Usually, a multi-disc clutch is provided for torque transmission, and this multi-disc clutch is frictionally engaged by a piston that applies pressure according to the differential rotation of the front and rear wheels or the left and right wheels. ing.

〈発明が解決しようとする課題〉 この種の駆動力伝達装置においては、多板クラッチが収
容されたチャンバ内にクラッチプレートを潤滑するため
の潤滑油が充填されている。
<Problems to be Solved by the Invention> In this type of driving force transmission device, a chamber housing a multi-plate clutch is filled with lubricating oil for lubricating the clutch plates.

このため、多板クラッチの摩擦熱により潤滑油および潤
滑油に混入している空気の温度が上昇すると、潤滑油お
よび空気が体積膨張する。また、潤滑油は使用されてい
るうちに一部が燃焼ガスととなる。これによりチャンバ
内の圧力が上昇し、この圧力がピストンに作用する。こ
の結果ピストンによるクラッチ押圧力が減じられ、差動
回転に対する伝達トルクが低下する問題がある。
Therefore, when the temperature of the lubricating oil and the air mixed in the lubricating oil rises due to the frictional heat of the multi-disc clutch, the lubricating oil and air expand in volume. Further, while lubricating oil is used, a portion thereof becomes combustion gas. This increases the pressure within the chamber, which acts on the piston. As a result, there is a problem in that the clutch pressing force by the piston is reduced, and the torque transmitted to the differential rotation is reduced.

〈課題を解決するための手段〉 本発明は上述した問題を解決するためになされたもので
、クラッチ手段を収納するチャンバに潤滑油を充填し、
このチャンバに外部と連通ずる連通路を形成し、この連
通路に気体のみ透過するフィルタを設けたものである。
<Means for Solving the Problems> The present invention has been made to solve the above-mentioned problems, and includes filling a chamber containing a clutch means with lubricating oil,
A communication passage communicating with the outside is formed in this chamber, and a filter through which only gas passes is provided in this communication passage.

く作用〉 本発明は上述した構成のため、多板クラッチの摩擦熱で
潤滑油および空気が体積膨張したときには、連通路より
フィルタを介して空気や潤滑油の燃焼ガス等の気体のみ
が外部に排出され、ハウジング内の圧力が適性値に保た
れる。
Since the present invention has the above-described configuration, when the lubricating oil and air expand in volume due to the frictional heat of the multi-disc clutch, only the gas such as the air and the combustion gas of the lubricating oil is released from the communication path through the filter. is evacuated and the pressure within the housing is maintained at a suitable value.

〈実施例〉 以下本発明の実施例を図面に基づいて説明する。<Example> Embodiments of the present invention will be described below based on the drawings.

第1図は相対回転可能な2軸(前後輪軸あるいは左右輪
軸)の間に配置される駆動力伝達装置20を示し、この
駆動力伝達装置20は、ハウジング21と、このハウジ
ング21内を縦貫して回転可能に軸承された回転軸22
と、これらハウジング21と回転軸22との差動回転に
応じた圧力を発生する圧力発生手段23と、この圧力発
生手段23にて発生した圧力が作用されるピストン24
と、このピストン24の押圧力によって摩擦係合される
クラッチ手段25とによって主に構成されている。
FIG. 1 shows a driving force transmission device 20 disposed between two relatively rotatable axles (front and rear wheel axles or left and right wheel axles). A rotating shaft 22 rotatably supported
, a pressure generating means 23 that generates pressure according to the differential rotation between the housing 21 and the rotating shaft 22, and a piston 24 on which the pressure generated by the pressure generating means 23 is applied.
and a clutch means 25 that is frictionally engaged by the pressing force of the piston 24.

前記ハウジング21の一端は前記2軸の一方15に一体
的に結合され、また前記回転軸22内には前記2軸の他
方16がスプライン係合されている。ハウジング21に
は、その一端より有底円筒状の中空穴26が形成され、
この中空穴26の底面に所定の隙間を存して前記ピスト
ン24が摺動可能に収納され、このピストン24はハウ
ジング21の内周に形成されたスプラインに係合して回
り止めされている。
One end of the housing 21 is integrally connected to one 15 of the two shafts, and the other shaft 16 of the two shafts is spline-engaged within the rotating shaft 22. A hollow cylindrical hole 26 with a bottom is formed in the housing 21 from one end thereof,
The piston 24 is slidably housed in the bottom of the hollow hole 26 with a predetermined gap, and the piston 24 is engaged with a spline formed on the inner periphery of the housing 21 to prevent rotation.

前記ハウジング21の底壁とピストン24の端壁との間
には、円筒状の空間部40が形成され、この空間部40
にその軸方向寸法より僅かに小さな肉厚の回転部材41
が摺接可能に収納されている。かかる回転部材41は第
2図に示すように、中心部を前記回転軸22の外周にス
プライン係合され、また直径方向に延びる2枚のブレー
ド42を有している。これにより前記空間部40は、複
数のブレード42によって円周上複数の圧力室43に区
画され、これら各圧力室43にシリコンオイル等の高粘
度流動体44が充填されている。しかして上記した円筒
状空間部40に収納された回転部材41および高粘度流
動体44により前記圧力発生手段23を構成している。
A cylindrical space 40 is formed between the bottom wall of the housing 21 and the end wall of the piston 24.
The rotating member 41 has a wall thickness slightly smaller than its axial dimension.
is housed in a slidable manner. As shown in FIG. 2, the rotating member 41 has a center portion engaged with the outer periphery of the rotating shaft 22 by a spline, and has two blades 42 extending in the diametrical direction. As a result, the space 40 is circumferentially divided into a plurality of pressure chambers 43 by a plurality of blades 42, and each of these pressure chambers 43 is filled with a high viscosity fluid 44 such as silicone oil. The rotating member 41 and the high-viscosity fluid 44 housed in the cylindrical space 40 constitute the pressure generating means 23.

かかる圧力発生手段23により、前記2軸15.16が
相対回転して前記回転部材41がハウジング21内で相
対回転すると、圧力室43に充填された高粘度流動体4
4がブレード42により、対向する2面間を回転速度差
に応じた流速で強制移動される際に、ハウジング21の
底面およびピストン24の端面の両壁面との粘性摩擦に
より圧力室43内に回転部材41の回転速度に比例した
内圧が発生する。
When the two shafts 15 and 16 are relatively rotated by the pressure generating means 23 and the rotary member 41 is relatively rotated within the housing 21, the high viscosity fluid 4 filled in the pressure chamber 43 is
4 is forcibly moved by the blade 42 between the two opposing surfaces at a flow rate according to the rotational speed difference, it rotates into the pressure chamber 43 due to viscous friction with both wall surfaces of the bottom surface of the housing 21 and the end surface of the piston 24. An internal pressure proportional to the rotational speed of the member 41 is generated.

すなわちこの内圧は、例えばブレード42がハウジング
21に対して矢印方向に回転する場合には、2つのブレ
ード42で囲まれた圧力室43の先行するブレード側面
側をA、後続するブレード側面側をBとすると、B点で
最も高く、A点で最も低い圧力分布となり、圧力室43
にブレード42の回転速度に比例した圧力が発生ずる。
That is, for example, when the blade 42 rotates in the direction of the arrow with respect to the housing 21, this internal pressure is applied to the pressure chamber 43 surrounded by the two blades 42, with pressure A on the side of the preceding blade and B on the side of the succeeding blade. Then, the pressure distribution will be highest at point B and lowest at point A, and the pressure distribution will be the highest at point B and the lowest at point A.
A pressure proportional to the rotational speed of the blade 42 is generated.

前記ハウジング21の中空室26の開口端にはエンドカ
バー28がサークリップ30により着脱可能に装着され
、これによってエンドカバー28と前記ピストン24と
の間に密閉されたチャンバ27が形成され、このチャン
バ27には潤滑油が適性な充填率で封入されている。
An end cover 28 is removably attached to the open end of the hollow chamber 26 of the housing 21 by a circlip 30, thereby forming a sealed chamber 27 between the end cover 28 and the piston 24. 27 is filled with lubricating oil at an appropriate filling rate.

そしてチャンバ27を形成するハウジング21には、外
部と連通する連通路46が形成されており、この連通路
46の開口には四弗化エチレン樹脂等で形成された多孔
質のフィルタ45が装着されている。このフィルタ45
は多孔質の構造を有しているため、空気等の気体は透過
し、液体は透過しないようになっている。
A communication passage 46 communicating with the outside is formed in the housing 21 forming the chamber 27, and a porous filter 45 made of polytetrafluoroethylene resin or the like is attached to the opening of the communication passage 46. ing. This filter 45
Because it has a porous structure, gases such as air can pass through it, but liquids cannot.

また前記チャンバ27内には多板クラッチからなるクラ
ッチ手段25を構成する複数のアウタプレート37とイ
ンナプレート38が交互に配置されており、アウタプレ
ート37はハウジング21の内周にスプライン係合され
、インナプレート38は回転軸22の外周に取付けられ
たクラッチハプ39にスプライン係合されている。
Further, in the chamber 27, a plurality of outer plates 37 and inner plates 38 constituting the clutch means 25 consisting of a multi-plate clutch are arranged alternately, and the outer plate 37 is spline engaged with the inner periphery of the housing 21. The inner plate 38 is splined to a clutch hub 39 attached to the outer periphery of the rotating shaft 22.

次に上記した構成における駆動力伝達装置の動作につい
て説明する。
Next, the operation of the driving force transmission device with the above configuration will be explained.

2軸の間で相対回転が生ずると、回転部材4工がハウジ
ング21に対して例えば第2図の矢印方向に相対回転す
る。従って圧力室43に充填された高粘度流動体44が
、対向する2面間を回転速度差に応じた流速で強制移動
され、高粘度流動体44の粘性摩擦作用により圧力室4
3内に2軸の差動回転に比例した内圧が発生し、ピスト
ン24が押圧される。
When relative rotation occurs between the two axes, the rotating member 4 rotates relative to the housing 21, for example, in the direction of the arrow in FIG. Therefore, the high viscosity fluid 44 filled in the pressure chamber 43 is forcibly moved between the two opposing surfaces at a flow rate corresponding to the rotational speed difference, and due to the viscous frictional action of the high viscosity fluid 44, the pressure chamber 44
Internal pressure proportional to the differential rotation of the two axes is generated within the piston 3, and the piston 24 is pressed.

従って複数のアウタプレート37とインナプレート38
がピストン24に作用する圧力に応じた押圧力で摩擦係
合され、クラッチ手段25を介して2軸間に回転トルク
が伝達される。
Therefore, a plurality of outer plates 37 and inner plates 38
are frictionally engaged by a pressing force corresponding to the pressure acting on the piston 24, and rotational torque is transmitted between the two shafts via the clutch means 25.

そして、この伝達の際にアウタプレート37とインナプ
レート38の摩擦係合により発生した熱で、潤滑油の燃
焼ガスや潤滑油の体積膨張が発生するが、潤滑油内の空
気や燃焼ガスは連通路46より排出される。また温度低
下に伴い、外部より空気が吸入される。
During this transmission, the heat generated by the frictional engagement between the outer plate 37 and the inner plate 38 causes combustion gas in the lubricating oil and volumetric expansion of the lubricating oil, but the air and combustion gas in the lubricating oil are continuously It is discharged from the passage 46. Additionally, as the temperature decreases, air is sucked in from the outside.

このように連通路46を介して外部との呼吸作用が行わ
れるため、常にチャンバ27内は適性な圧力に保たれる
Since the breathing action with the outside is performed through the communication path 46 in this way, the inside of the chamber 27 is always maintained at an appropriate pressure.

〈発明の効果〉 以上述べたように本発明においては、多板クラッチが収
納されたチャンバと外部の空間を連通ずる連通路を形成
し、この連通路に気体のみを透過するフィルタを装着し
たので、チャンバと外部の空間とで呼吸作用が行われ、
潤滑油および混入された空気が熱膨張しても連通路より
空気のみが外部に放出され、チャンバ内の圧力を常に適
性に保つことができる利点がある。
<Effects of the Invention> As described above, in the present invention, a communication path is formed that communicates the chamber in which the multi-disc clutch is housed with the outside space, and a filter that only transmits gas is attached to this communication path. , a breathing action takes place between the chamber and the external space,
Even if the lubricating oil and the air mixed in are thermally expanded, only the air is released to the outside from the communication path, which has the advantage that the pressure within the chamber can always be maintained at an appropriate level.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の実施例を示すものであり、第1図は駆動
力伝達装置の断面図、第2図は第1の■■断面図である
。 21・・・ハウジング、22・・・回転軸、23・・・
圧力発生手段、24・・・ピストン、25・・・クラッ
チ手段、26・・・中空室、27・・・チャンバ、28
・・・エンドカバー、41・・・回転部材、43・・・
圧力室、45・・・フィルタ、46・・・連通路。
The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view of a driving force transmission device, and FIG. 2 is a first sectional view. 21... Housing, 22... Rotating shaft, 23...
Pressure generating means, 24... Piston, 25... Clutch means, 26... Hollow chamber, 27... Chamber, 28
...End cover, 41...Rotating member, 43...
Pressure chamber, 45...filter, 46...communication path.

Claims (1)

【特許請求の範囲】[Claims] (1)相対回転可能な2軸の間に配置され両軸の間でト
ルクを伝達するクラッチ手段と、このクラッチ手段を押
圧するピストンと、このピストンに前記2軸の間の相対
回転に応じた圧力を作用させる圧力発生手段とを備えた
駆動力伝達装置において、前記クラッチ手段を収納する
チャンバに潤滑油を充填し、このチャンバに外部と連通
する連通路を形成し、この連通路に気体のみ透過するフ
ィルタを設けたことを特徴とする駆動力伝達装置。
(1) A clutch means arranged between two relatively rotatable shafts and transmitting torque between the two shafts, a piston that presses this clutch means, and a clutch means that is arranged between two relatively rotatable shafts, a piston that presses this clutch means, and a clutch means that is arranged between two relatively rotatable shafts, and a piston that presses this clutch means, and a clutch means that is arranged between two relatively rotatable shafts, and a piston that presses this clutch means, and a In a driving force transmission device equipped with a pressure generating means for applying pressure, a chamber housing the clutch means is filled with lubricating oil, a communication passage communicating with the outside is formed in this chamber, and only gas is supplied to the communication passage. A driving force transmission device characterized by being provided with a transmitting filter.
JP16135988A 1988-06-29 1988-06-29 Drive force transmitting device Pending JPH0211931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16135988A JPH0211931A (en) 1988-06-29 1988-06-29 Drive force transmitting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16135988A JPH0211931A (en) 1988-06-29 1988-06-29 Drive force transmitting device

Publications (1)

Publication Number Publication Date
JPH0211931A true JPH0211931A (en) 1990-01-17

Family

ID=15733587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16135988A Pending JPH0211931A (en) 1988-06-29 1988-06-29 Drive force transmitting device

Country Status (1)

Country Link
JP (1) JPH0211931A (en)

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