JPH01242833A - Driving force transmission device - Google Patents

Driving force transmission device

Info

Publication number
JPH01242833A
JPH01242833A JP6930388A JP6930388A JPH01242833A JP H01242833 A JPH01242833 A JP H01242833A JP 6930388 A JP6930388 A JP 6930388A JP 6930388 A JP6930388 A JP 6930388A JP H01242833 A JPH01242833 A JP H01242833A
Authority
JP
Japan
Prior art keywords
rotor
cylinder housing
blade
blades
rotating shaft
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
JP6930388A
Other languages
Japanese (ja)
Inventor
Naoyuki Sakai
直行 酒井
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.)
Toyoda Koki KK
Original Assignee
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 Toyoda Koki KK filed Critical Toyoda Koki KK
Priority to JP6930388A priority Critical patent/JPH01242833A/en
Publication of JPH01242833A publication Critical patent/JPH01242833A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To avoid tight corner braking and to improve the ability of escaping from a rough road by accommodating a rotor in an axial clearance between a cylinder housing and a working piston, and providing a blade formed in one body with the rotor with a communicating passage and a control blade to close it through centrifugal force. CONSTITUTION:A rotor 41 having thickness equal to the width of an axial clearance between a cylinder housing 32 and a working piston 36 is accommodated in the above-mentioned clearance in such a way as it can rotate relatively to a rotating shaft 33 and slide axially. A blade 42 is formed in one body with the rotor 41, and a space formed by them is sealedly filled with a silicon oil. The blade 42 is provided with a communicating passage 50 and a control rod 51 which opens and closes the passage 50 according to differential rotating speed between the cylinder housing 32 and the rotating shaft 33. In addition, the rotating shaft 33 is provided with a convex cam 53, and a control rod 51 is provided with a concave cam 52. Thus the avoidance of tight corner braking and the improvement of the ability of escaping from a rough road can be compatibly accomplished.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、入力軸と出力軸との間に差動回転が生じた時
に入力軸の回転動力を出力軸に伝え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 relates to a driving force transmission system that transmits rotational power of an input shaft to an output shaft when differential rotation occurs between an input shaft and an output shaft. It is related to the device.

〈従来の技術〉 4輪駆動車のトルク伝達装置において、前輪駆動軸(入
力軸)と後輪駆動軸(出力軸)との間に形成された密閉
室内に両軸の間でトルクを伝達する多板クラッチを配置
し、前輪駆動軸と後輪駆動軸との差動回転に応じた油圧
力を発生ずる油圧発生手段の油圧力により前記多板クラ
ッチの伝達トルクを制御する作動ピストンを備えた駆動
力伝達装置は例えば特開昭60−252026号公報で
公知である。
<Prior art> In a torque transmission device for a four-wheel drive vehicle, torque is transmitted between a front wheel drive shaft (input shaft) and a rear wheel drive shaft (output shaft) within a sealed chamber formed between the two shafts. A multi-disc clutch is arranged, and an operating piston is provided that controls the transmission torque of the multi-disc clutch by the hydraulic pressure of a hydraulic pressure generating means that generates a hydraulic pressure corresponding to differential rotation between a front wheel drive shaft and a rear wheel drive shaft. A driving force transmission device is known, for example, from Japanese Patent Laid-Open No. 60-252026.

このものの前記油圧発生手段は、前Va駆動軸と後輪駆
動軸との間に、両軸の差動回転に応じて油圧を吐出する
プランジャ形あるいはベーン形のオイルポンプを組み込
み、このオイルポンプより吐出された圧油を両軸の一方
に形成された圧力導入路を介して前記作動ピストンの一
側方のシリンダ室に導入し、多板クラッチを作動ピスト
ンにより接合方向に押圧する構成である。
The hydraulic pressure generating means of this device incorporates a plunger-type or vane-type oil pump between the front Va drive shaft and the rear wheel drive shaft, which discharges hydraulic pressure according to the differential rotation of both shafts. The discharged pressure oil is introduced into a cylinder chamber on one side of the working piston through a pressure introduction path formed on one of both shafts, and the multi-disc clutch is pressed in the engaging direction by the working piston.

また、前記油圧発生手段として、前記作動ピストンを収
納するシリンダハウジングとの間で制限された軸方向隙
間を作動ピストンの側方に設け、この軸方向隙間にその
隙間と略同程度の肉厚の薄肉ロータを収納し、このロー
タを前記前Va駆動軸と後輪駆動軸の何れか一方に連結
し、かつ他方に前記シリンダハウジングを連結し、前記
ロータの円周上に複数のブレードを設け、これらブレー
ドによって前記空間部を円周上複数に区画し、これら各
空間部に高粘度油を封入した構成のものを本願出願人に
おいて特願昭62−75240号によって提供している
Further, as the hydraulic pressure generating means, a limited axial clearance is provided on the side of the working piston between the cylinder housing that houses the working piston, and a wall thickness approximately the same as that of the clearance is provided in the axial clearance. A thin-walled rotor is housed, the rotor is connected to one of the front Va drive shaft and the rear wheel drive shaft, and the cylinder housing is connected to the other, and a plurality of blades are provided on the circumference of the rotor, The applicant of the present invention has proposed a structure in which the space is divided into a plurality of sections on the circumference by these blades and high viscosity oil is sealed in each of these spaces in Japanese Patent Application No. 75240/1983.

〈発明が解決しようとする課題〉 上記した油圧発生手段の場合、差動回転−伝達トルク特
性を第5図のA曲線で示すように高めに設定すると、タ
イトコーナブレーキ現象が起こり操作性を悪くする。逆
に差動回転−伝達トルク特性を第5図の8曲線で示すよ
うに低めに設定すると、ぬかるみ等の悪路脱出性の面か
らは好ましくない。
<Problems to be Solved by the Invention> In the case of the above-mentioned hydraulic pressure generating means, if the differential rotation-transmission torque characteristic is set high as shown by curve A in Fig. 5, a tight corner braking phenomenon will occur, resulting in poor operability. do. On the other hand, setting the differential rotation-transmission torque characteristic to a low value as shown by curve 8 in FIG. 5 is not preferable from the standpoint of escaping from rough roads such as mud.

く課題を解決するための手段〉 本発明は、上記の問題点に鑑みなされたもので、その構
成は、入力軸と出力軸との間に配置され両軸間にトルク
を伝達する多板クラッチと、この多板クラッチの伝達ト
ルクを制御する作動ピストンを備えた駆動力伝達装置に
おいて、前記作動ピストンを収納するシリンダハウジン
グとの間で制限された軸方向隙間を作動ピストンの側方
に設け、この軸方向隙間に薄肉ロータを収納し、このロ
ータを前記入力軸と出力軸の何れか一方に相対回転可能
に連結し、かつ他方に前記シリンダハウジングを連結し
、前記ロータの円周上に複数のブレードを設け、これら
ブレードによって前記軸方向隙間の空間部を円周上複数
に区画し、これら空間部に高粘度油を封入するとともに
、前記各空間部に封入された高粘度油を前記入力軸と出
力軸との差動回転に基づく高圧空間部側から低圧空間部
側へ逃し制御する連通路を前記ブレードに設け、前記差
動回転の上昇に応じてカム機構により半径方向に変位し
前記連通路を閉頭する制御ロッドを前記ブレードに設け
たものである。
Means for Solving the Problems The present invention has been made in view of the above problems, and has a structure including a multi-disc clutch that is disposed between an input shaft and an output shaft and transmits torque between both shafts. and a driving force transmission device including an actuation piston that controls the transmission torque of the multi-disc clutch, wherein a limited axial clearance is provided on the side of the actuation piston between the actuation piston and a cylinder housing that accommodates the actuation piston, A thin-walled rotor is housed in this axial gap, and this rotor is connected to one of the input shaft and the output shaft so as to be relatively rotatable, and the cylinder housing is connected to the other, and a plurality of thin-walled rotors are arranged on the circumference of the rotor. blades are provided, and these blades divide the space of the axial gap into a plurality of regions on the circumference, and high viscosity oil is sealed in these spaces, and the high viscosity oil sealed in each space is introduced into the input space. A communication path is provided in the blade to control the release from the high pressure space side to the low pressure space side based on the differential rotation between the shaft and the output shaft, and the blade is displaced in the radial direction by a cam mechanism as the differential rotation increases. A control rod for closing the communication path is provided on the blade.

く作 用〉 上記の構成により、入力軸と出力軸が差動回転してロー
タがシリンダハウジング内で回転すると、ロータの羽根
によって区画された空間部に封入されている高粘度油が
軸方向隙間を強制移動力れることにより、空間部の高粘
度油が差動回転速度に応じて圧力上昇し、作動ピストン
を押圧して多板クラッチを接合し、4輪駆動状態にする
With the above configuration, when the input shaft and output shaft rotate differentially and the rotor rotates within the cylinder housing, the high viscosity oil sealed in the space partitioned by the rotor blades fills the axial gap. Due to the forced movement force, the high viscosity oil in the space increases in pressure in accordance with the differential rotation speed, presses the actuating piston and engages the multi-disc clutch, creating a four-wheel drive state.

また、ブレードに設けた連通路は、入力軸と出力軸間の
差動回転速度が小さいときに制御ロッドがロータ側へ変
位して開口しており、高圧空間部側から低圧空間部側へ
の高粘度油の逃しを行い、それに見合った小さな伝達ト
ルク特性を得る。
In addition, the communication path provided in the blade is opened when the control rod is displaced toward the rotor when the differential rotation speed between the input shaft and the output shaft is small, and the communication path is opened from the high pressure space side to the low pressure space side. To release high viscosity oil and obtain commensurately small transmission torque characteristics.

前記差動回転速度が大きくなると、カム機構により制御
ロッドが連通路側へ差動回転速度の上昇に応じて変位し
、連通路を閉じて高圧空間部側から低圧空間部側への高
粘度油の逃しを遮断し、前記率さな伝達トルク特性から
連続的に大きな伝達トルク特性に変化する。
When the differential rotation speed increases, the cam mechanism displaces the control rod toward the communication path in accordance with the increase in the differential rotation speed, closing the communication path and transferring high-viscosity oil from the high-pressure space side to the low-pressure space side. The transmission torque characteristic changes continuously from the low transmission torque characteristic to a large transmission torque characteristic.

〈実施例〉 以下本発明の実施例を図面に基づいて説明する。第6図
において、10は自動車のエンジンを示し、このエンジ
ン10の回転出力はトランスミッション11を介して前
輪駆動軸12(入力軸)に伝えられ、この駆動軸12の
回転は前輪側差動装置13を介して左右の前輪15.1
6に伝えられる。
<Example> Hereinafter, an example of the present invention will be described based on the drawings. In FIG. 6, reference numeral 10 indicates an engine of an automobile, and the rotational output of this engine 10 is transmitted to a front wheel drive shaft 12 (input shaft) via a transmission 11, and the rotation of this drive shaft 12 is transmitted to a front wheel differential device 13. Through the left and right front wheels 15.1
6 can be conveyed.

前記前va駆動軸12には、後述する構成のトルク伝達
装置30を介して後輪駆動軸20(出力軸)が連結され
、この後輪駆動軸20に伝達された回転トルクは後輪側
差動装置21を介して左右の後輪23.24に伝えられ
る。
A rear wheel drive shaft 20 (output shaft) is connected to the front VA drive shaft 12 via a torque transmission device 30 configured to be described later, and the rotational torque transmitted to the rear wheel drive shaft 20 is transmitted to the rear wheel side. It is transmitted to the left and right rear wheels 23 and 24 via the dynamic device 21.

以下トルク伝達装置30(駆動力伝達装置)の具体的構
成について説明する。
The specific configuration of the torque transmission device 30 (driving force transmission device) will be described below.

第1図において、32はシリンダハウジングであり入力
軸12の一端が結合される。31はハウジングキャップ
を示し、これによりシリンダハウジング32内は密閉さ
れる。このシリンダハウジング32とハウジングキャッ
プ31に回転軸33がシリンダハウジング32と同心で
回転自在に軸承されている。前記回゛転軸33には出力
軸20の一端が結合される。
In FIG. 1, 32 is a cylinder housing to which one end of the input shaft 12 is connected. Reference numeral 31 denotes a housing cap, which seals the inside of the cylinder housing 32. A rotary shaft 33 is rotatably supported on the cylinder housing 32 and the housing cap 31 concentrically with the cylinder housing 32 . One end of the output shaft 20 is coupled to the rotation shaft 33 .

前記シリンダハウジング32内においては、クラッチ潤
滑油が封入されており、またシリンダハウジング32の
内周には複数のアウタプレート37がスプラインにより
回転方向を係合し、かつ軸線方向に移動可能に並設され
ている。
Clutch lubricating oil is sealed in the cylinder housing 32, and a plurality of outer plates 37 are arranged in parallel on the inner periphery of the cylinder housing 32 to be engaged in the rotational direction by splines and movable in the axial direction. has been done.

一方、回転軸33の外周には複数のインナプレート38
がスプラインにより回転方向を係合し、軸線方向に移動
可能に並設されている。これら、アウタプレート37と
インナプレート38は交互に配置され、いわゆる多板ク
ラッチ40を構成している。前記シリンダハウジング3
2内には、多板クラッチ40とシリンダハウジング32
との間に作動ピストン36が摺動可能に嵌装され、この
作動  ゛ピストン36の作動力が前記多板クラッチ4
0に伝えられる。
On the other hand, a plurality of inner plates 38 are provided on the outer periphery of the rotating shaft 33.
are engaged in the rotational direction by a spline and are arranged in parallel so that they can move in the axial direction. These outer plates 37 and inner plates 38 are arranged alternately and constitute a so-called multi-disc clutch 40. The cylinder housing 3
2 includes a multi-disc clutch 40 and a cylinder housing 32.
An actuating piston 36 is slidably fitted between the multi-disc clutch 4 and the actuating force of the actuating piston 36.
0 can be communicated.

前記作動ピストン36の側方には、シリンダハウジング
32との間に代かな軸方向隙間が設けられ、この軸方向
隙間に隙間と略同−の肉厚をもつ薄肉ロータ41が摺動
可能に収納されている。
A small axial clearance is provided on the side of the operating piston 36 and the cylinder housing 32, and a thin-walled rotor 41 having approximately the same wall thickness as the clearance is slidably housed in this axial clearance. has been done.

このロータ41には第2図で示すように直径方向にブレ
ード42が形成されている40−タ41は中心部を回転
軸33の外周に相対回転可能に嵌合されている。尚、ロ
ータ41は、その外周をシリンダハウジング32の内周
に相対回転可能に嵌合してもよい、これらによって軸方
向隙間には前記複数のブレード42によって円周方向に
区画された空間部43が形成され、これらの空間部43
にシリコンオイル等の高粘度油が封入されている。
As shown in FIG. 2, this rotor 41 has blades 42 formed in its diameter direction, and its center portion is fitted to the outer periphery of the rotating shaft 33 so as to be relatively rotatable. The rotor 41 may be fitted with its outer periphery to the inner periphery of the cylinder housing 32 so as to be relatively rotatable, so that a space 43 defined in the circumferential direction by the plurality of blades 42 is formed in the axial gap. are formed, and these spaces 43
High viscosity oil such as silicone oil is sealed in.

さらに、前記ブレード42には、隣接する空間部43間
を連通する連通路50と、この連通路50をシリンダハ
ウジング32と回転軸33との差動回転速度に応じて開
閉する制御ロッド51が設けられている。
Furthermore, the blade 42 is provided with a communication path 50 that communicates between the adjacent spaces 43 and a control rod 51 that opens and closes the communication path 50 according to the differential rotational speed between the cylinder housing 32 and the rotating shaft 33. It is being

前記制御ロッド51は前記連通路50と直交する半径方
向に変位可能に設けられ、ロータ41側の端部に凹カム
52が形成されている。また、この凹カム52と対応す
る回転軸33の外周には凸カム53が形成され、凹カム
52と凸カム53とは回転軸33の回転方向に凹凸係合
し、回転軸33の回転が凸カム53、凹カム52及び制
御ロッド51を介してブレード42に伝えられる。54
は前記凹カム52を凸カム53に押し付けるためのスプ
リングであり、凹カム52と凸カム53との位相が合致
して完全に凹凸係合しているときには前記スプリング5
4の力によってブレード51はロータ411Ffに変位
され、連通路50を開口している。
The control rod 51 is provided so as to be displaceable in a radial direction orthogonal to the communication path 50, and has a concave cam 52 formed at its end on the rotor 41 side. Further, a convex cam 53 is formed on the outer periphery of the rotating shaft 33 corresponding to the concave cam 52, and the concave cam 52 and the convex cam 53 engage in a concave-convex manner in the rotational direction of the rotating shaft 33, so that the rotation of the rotating shaft 33 is prevented. It is transmitted to the blade 42 via the convex cam 53, the concave cam 52, and the control rod 51. 54
is a spring for pressing the concave cam 52 against the convex cam 53, and when the concave cam 52 and the convex cam 53 are in phase with each other and are completely engaged, the spring 5 is pressed against the convex cam 53.
The blade 51 is displaced toward the rotor 411Ff by the force of 4, and the communication path 50 is opened.

上記した構成により、シリンダハウジング32と回転軸
33とが差動回転していない場合は、ブレード42が収
納されている軸方向隙間には高粘度油による内圧は発生
されず、作動ピストン36は多板クラッチ401111
へは移動しない、従って、多板クラッチ40はトルク伝
達作用は行わない。
With the above configuration, when the cylinder housing 32 and the rotating shaft 33 are not differentially rotating, no internal pressure is generated due to high viscosity oil in the axial clearance where the blade 42 is housed, and the operating piston 36 is Plate clutch 401111
Therefore, the multi-disc clutch 40 does not perform any torque transmission action.

シリンダハウジング32と回転軸33とが差動回転する
と、前記の通りブレード42は凸カム53、凹カム52
及び制御ロッド51を介して回転し、空間部43に封入
された高粘度油がブレード42により、接近した2面間
を回転速度差に対応した流速で強制移動され、シリンダ
ハウジング32及び作動ピストン36の両端面との粘性
0擦により内圧が発生ずる。すなわち、例えば第2図に
おいてシリンダハウジング32に対し、ロータ41が時
計回りに回転した場合、ブレード42のト■面が高圧、
L面が低圧力分布の内圧が発生する。この内圧により作
動ピストン36は多板クラッチ40を圧接する方向に押
圧され、トルク伝達作用を行う。
When the cylinder housing 32 and the rotary shaft 33 differentially rotate, the blade 42 rotates between the convex cam 53 and the concave cam 52 as described above.
The high viscosity oil sealed in the space 43 is forcibly moved by the blade 42 between the two closely spaced surfaces at a flow rate corresponding to the rotational speed difference, and the cylinder housing 32 and the actuating piston 36 Internal pressure is generated due to zero viscosity friction with both end surfaces. That is, for example, when the rotor 41 rotates clockwise relative to the cylinder housing 32 in FIG. 2, the top surface of the blade 42 is exposed to high pressure.
Internal pressure with low pressure distribution is generated on the L surface. This internal pressure presses the actuating piston 36 in a direction to press against the multi-disc clutch 40, thereby performing a torque transmitting action.

そこでトルク伝達作用は、前記差動回転速度が小さく伝
達トルクが小さいうちには第3図で示すように、スプリ
ング54のバイアスにより凹カム52を凸カム53に完
全な凹凸係合状態で押付けて制御ロッド51をロータ4
1側へ変位させ連通路50を開口している。従って、高
粘度油は高圧空間部l1111 (ブレード42の14
面側)から低圧空間部III (ブレード42のL面側
)へ逃され、発生内圧を小さく抑える。これにより第5
図の8曲線で示すように小さな伝達トルク特性となる。
Therefore, the torque transmission action is carried out by pressing the concave cam 52 against the convex cam 53 in a state of complete concave and convex engagement by the bias of the spring 54, as shown in FIG. control rod 51 to rotor 4
The communication path 50 is opened by being displaced toward the first side. Therefore, high viscosity oil is stored in high pressure space l1111 (14 of blade 42).
surface side) to the low pressure space III (L side of the blade 42), and suppresses the generated internal pressure to a low level. This allows the fifth
As shown by curve 8 in the figure, the transmission torque characteristics are small.

しかしながら、差動回転速度が大きくなり伝達トルクが
大きくなってスプリング54のバイアス以上になると、
回転軸33とロータ41との間で相対回転が生起され、
凸カム53は凹カム52を押し出して制御ロッド51を
ブレード42の先端側へ半径方向に変位させ連通路50
を制御ロッド51にて閉鎖し、前記連通路50を通って
高圧空間部側から低圧空間部側への高粘度油のリークを
遮断する。これにより、発生内圧が大きくなり伝達トル
ク特性は第5図C曲線(実線)で示すように、小さな伝
達トルク(B)から大きな伝達トルク特性(A)に連線
的に変化する。
However, when the differential rotation speed increases and the transmitted torque increases to exceed the bias of the spring 54,
Relative rotation is generated between the rotating shaft 33 and the rotor 41,
The convex cam 53 pushes out the concave cam 52 and displaces the control rod 51 in the radial direction toward the tip of the blade 42 to open the communication path 50.
is closed by a control rod 51 to block leakage of high-viscosity oil from the high-pressure space side to the low-pressure space side through the communication path 50. As a result, the generated internal pressure increases and the transmission torque characteristic changes in a continuous manner from a small transmission torque (B) to a large transmission torque characteristic (A), as shown by curve C (solid line) in FIG.

尚、連通路50の径の設定を大、小変更すると、差動回
転速度の小さいときの伝達トルク特性(B)のヂューニ
ングが得られる。
Incidentally, by changing the setting of the diameter of the communication passage 50 to be large or small, tuning of the transmission torque characteristic (B) when the differential rotation speed is small can be obtained.

〈発明の効果〉 以−り述べたように本発明は、多板クラッチを制御する
作動ピストンの側方に制限された軸方向隙間を設け、こ
の隙間に薄肉ロータを収納し、このロータに形成したブ
レードによって区画された複数の空間部に高粘度油を封
入し、前記ブレードに、入力軸と出力軸との差動回転に
基づく高圧空間部側から低圧空間部側へ高粘度油を逃し
制御する連通路と、差動回転の上昇に応じてカム機構に
より半径方向に変位し前記連通路を閉鎖する制御ロッド
とを設けた構成であるので、差動回転速度に応じた伝達
トルク特性の変化が自動的に得られ、タイトコーナブレ
ーキングの回避と悪路脱出性等を両立できる効果がある
<Effects of the Invention> As described above, the present invention provides a limited axial clearance on the side of an operating piston that controls a multi-disc clutch, houses a thin-walled rotor in this clearance, and forms a High viscosity oil is sealed in a plurality of spaces divided by blades, and the high viscosity oil is controlled to escape from the high pressure space side to the low pressure space side based on the differential rotation between the input shaft and the output shaft. The configuration includes a communication passage that allows the differential rotation to increase, and a control rod that is displaced in the radial direction by a cam mechanism and closes the communication passage as the differential rotation increases, so that the transmission torque characteristics change in accordance with the differential rotation speed. is automatically obtained, which has the effect of achieving both the avoidance of tight corner braking and the ability to escape from rough roads.

【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、第1図は駆動力伝
達装置の断面図、第2図は第1図の■−■線断面図、第
3図及び第4図は本発明の作動状態を説明する要部断面
図、第5図は差動回転に対する伝達トルク特性を示す図
、第6図は4輪駆動車の概略図である。 32・・・シリンダハウジング、33・・・回転軸、3
6・・・作動ピストン、40・・・多板クラッチ、41
・・・ロータ、42・・・ブレード、43・・・空間部
、50・・・連通路、51・・・制御ロッド、52・・
・凹カム、53・・・凸カム、54・・・スプリング。 特許出願人  豊田工機株式会社 代   理   人    平   井   二   
部図面 第2図 第3図 第5図    33
The drawings show embodiments of the present invention; FIG. 1 is a sectional view of the driving force transmission device, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIGS. FIG. 5 is a cross-sectional view of a main part explaining the operating state, FIG. 5 is a diagram showing transmission torque characteristics with respect to differential rotation, and FIG. 6 is a schematic diagram of a four-wheel drive vehicle. 32... Cylinder housing, 33... Rotating shaft, 3
6... Operating piston, 40... Multi-plate clutch, 41
...Rotor, 42...Blade, 43...Space, 50...Communication path, 51...Control rod, 52...
・Concave cam, 53...Convex cam, 54...Spring. Patent applicant: Toyoda Machine Machinery Co., Ltd. Agent: Mr. Hirai
Part drawings Figure 2 Figure 3 Figure 5 33

Claims (1)

【特許請求の範囲】[Claims] 入力軸と出力軸との間に配置され両軸間にトルクを伝達
する多板クラッチと、この多板クラッチの伝達トルクを
制御する作動ピストンを備えた駆動力伝達装置において
、前記作動ピストンを収納するシリンダハウジングとの
間で制限された軸方向隙間を作動ピストンの側方に設け
、この軸方向隙間に薄肉ロータを収納し、このロータを
前記入力軸と出力軸の何れか一方に相対回転可能に連結
し、かつ他方に前記シリンダハウジングを連結し、前記
ロータの円周上に複数のブレードを設け、これらブレー
ドによって前記軸方向隙間の空間部を円周上複数に区画
し、これら空間部に高粘度油を封入するとともに、前記
各空間部に封入された高粘度油を前記入力軸と出力軸と
の差動回転に基づく高圧空間部側から低圧空間部側へ逃
し制御する連通路を前記ブレードに設け、前記差動回転
の上昇に応じてカム機構により半径方向に変位し前記連
通路を閉鎖する制御ロッドを前記ブレードに設けたこと
を特徴とする駆動力伝達装置。
In a driving force transmission device comprising a multi-disc clutch disposed between an input shaft and an output shaft and transmitting torque between both shafts, and an operating piston controlling the transmission torque of the multi-disc clutch, the operating piston is housed. A limited axial clearance is provided on the side of the actuating piston between the cylinder housing and the cylinder housing, and a thin-walled rotor is housed in this axial clearance, and this rotor can be rotated relative to either the input shaft or the output shaft. and the cylinder housing is connected to the other side, and a plurality of blades are provided on the circumference of the rotor, and the space of the axial gap is divided into a plurality of areas on the circumference by these blades, and a plurality of blades are provided on the circumference of the rotor. The communication path is configured to seal in high viscosity oil and control the release of the high viscosity oil sealed in each space from the high pressure space side to the low pressure space side based on the differential rotation between the input shaft and the output shaft. A driving force transmission device characterized in that the blade is provided with a control rod that is disposed on the blade and is displaced in a radial direction by a cam mechanism in response to an increase in the differential rotation to close the communication passage.
JP6930388A 1988-03-25 1988-03-25 Driving force transmission device Pending JPH01242833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6930388A JPH01242833A (en) 1988-03-25 1988-03-25 Driving force transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6930388A JPH01242833A (en) 1988-03-25 1988-03-25 Driving force transmission device

Publications (1)

Publication Number Publication Date
JPH01242833A true JPH01242833A (en) 1989-09-27

Family

ID=13398658

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6930388A Pending JPH01242833A (en) 1988-03-25 1988-03-25 Driving force transmission device

Country Status (1)

Country Link
JP (1) JPH01242833A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5979624A (en) * 1996-05-17 1999-11-09 Gkn Viscodrive Gmbh Device using viscous shear to control a coupling which limits torque transferable therethrough

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5979624A (en) * 1996-05-17 1999-11-09 Gkn Viscodrive Gmbh Device using viscous shear to control a coupling which limits torque transferable therethrough

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