JPH0574960U - Driving force transmission device - Google Patents
Driving force transmission deviceInfo
- Publication number
- JPH0574960U JPH0574960U JP1358092U JP1358092U JPH0574960U JP H0574960 U JPH0574960 U JP H0574960U JP 1358092 U JP1358092 U JP 1358092U JP 1358092 U JP1358092 U JP 1358092U JP H0574960 U JPH0574960 U JP H0574960U
- Authority
- JP
- Japan
- Prior art keywords
- friction clutch
- plate
- rotating member
- rotary members
- transmission device
- 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
Links
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- Arrangement And Driving Of Transmission Devices (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
(57)【要約】
【目的】内外両回転部材のトルク伝達を行う摩擦クラッ
チと同摩擦クラッチを差動回転に応じて押圧する押圧力
を発生する押圧力発生手段を備えた駆動力伝達装置にお
いて、高差動状態が発生した場合の摩擦クラッチの焼損
およびハンプ現象の発生を防止する。
【構成】両回転部材１１，１３間に複数のプレート１７
を両回転部材側１１，１３側へ移動可能にかつ摩擦クラ
ッチ１０ｂに当接して摩擦クラッチ１０ｂにて回転可能
に周方向に並列的へ配置して、プレート１７を両回転部
材の一方１１にはプレート１７の周方向への回転により
プレート１７を他方の回転部材１３側へ移動して同回転
部材１３に圧接させるカム手段を介して組付けるととも
に他方の回転部材１３には回転可能に組付け、かつプレ
ート１７を一方の回転部材１１側へ所定の力で付勢する
バネ部材１８により受承した。
(57) [Abstract] [Purpose] In a driving force transmission device including a friction clutch for transmitting torque between an inner and outer rotating member and a pressing force generating unit for generating a pressing force for pressing the friction clutch in accordance with differential rotation. Prevents the friction clutch from burning and hump when a high differential state occurs. [Structure] A plurality of plates 17 are provided between both rotary members 11 and 13.
Are arranged in parallel in the circumferential direction so as to be movable to both rotary member sides 11 and 13 and to be in contact with the friction clutch 10b so as to be rotatable by the friction clutch 10b. By rotating the plate 17 in the circumferential direction, the plate 17 is moved to the other rotating member 13 side and assembled by a cam means that presses against the rotating member 13 and is rotatably installed on the other rotating member 13. Further, the plate 17 is received by the spring member 18 which biases the plate 17 toward the one rotating member 11 side with a predetermined force.
Description
【０００１】[0001]
本考案は、同軸的に支持された両回転部材間に介装されてこれら両部材間のト ルク伝達を行う駆動力伝達装置に関する。 The present invention relates to a driving force transmission device that is interposed between two rotating members that are coaxially supported and that transmits torque between these two members.
【０００２】[0002]
かかる駆動力伝達装置は、互いに同軸的に支持された両回転部材間に介装され てこれら両回転部材の相対回転時これら両回転部材を互いにトルク伝達可能に連 結するもので、従動側回転部材を駆動させる連結機構として使用されるものと、 これら両回転部材間の回転差を制限させる差動制限機構として使用されるもの等 に大別される。前者の連結機構は主としてリアルタイム式の四輪駆動車における 一方の動力伝達系路に介装され、また後者の差動制限機構は主として車両におけ る各ディファレンシャルに介装される。 Such a driving force transmitting device is interposed between both rotating members which are coaxially supported with each other, and when the both rotating members rotate relative to each other, these rotating members are connected to each other so that torque can be transmitted to each other. It is roughly classified into one used as a connecting mechanism for driving the members and one used as a differential limiting mechanism for limiting the rotation difference between the both rotating members. The former coupling mechanism is mainly installed in one power transmission path in a real-time four-wheel drive vehicle, and the latter differential limiting mechanism is mainly installed in each differential in the vehicle.
【０００３】 しかして、従来の駆動力伝達装置としては特開昭６３−２４０４２９号公報に 示されているように、同軸的かつ相対回転可能に位置する内外両回転部材間に収 容され前記両回転部材の相対回転により作動してこれら両回転部材をトルク伝達 可能に連結する摩擦係合力を発生させるとともに付与される軸方向の押圧力に応 じて前記摩擦係合力を増減させる摩擦クラッチ、および前記両回転部材の相対回 転に応じた軸方向の押圧力を発生させて同押圧力を前記摩擦クラッチに付与する 押圧力発生手段を備えてなる駆動力伝達装置がある。However, as disclosed in Japanese Patent Laid-Open No. 63-240429, a conventional driving force transmission device is housed between both inner and outer rotating members that are coaxially and relatively rotatable. A friction clutch that is actuated by relative rotation of the rotary members to generate a frictional engagement force that connects the two rotary members in a torque transmittable manner, and that increases or decreases the frictional engagement force in response to an axial pressing force applied; There is a driving force transmission device including a pressing force generating unit that generates a pressing force in the axial direction according to the relative rotation of the rotating members and applies the pressing force to the friction clutch.
【０００４】 この種形式の駆動力伝達装置においては、両回転部材間に相対回転が生じると 押圧力発生手段に差動回転数に応じた圧力が発生する。この圧力は摩擦クラッチ を押圧して同クラッチに両回転部材をトルク伝達可能に連結する摩擦係合力を発 生させる。かかる摩擦係合力は差動回転数に比例し、両回転部材間では差動回転 数に比例したトルクが一方から他方へ伝達される。従って、当該駆動力伝達装置 は四輪駆動車の一方の動力伝達系路における駆動側回転部材と従動側回転部材と の連結機構として機能するとともに、駆動側および従動側回転部材間、両駆動側 回転部材間または両従動側回転部材間の差動制限機構としても機能する。In this type of driving force transmission device, when relative rotation occurs between both rotary members, pressure corresponding to the differential rotation speed is generated in the pressing force generation means. This pressure presses the friction clutch to generate a frictional engagement force that couples both rotary members to the same clutch so that torque can be transmitted. Such frictional engagement force is proportional to the differential rotation speed, and torque proportional to the differential rotation speed is transmitted between the two rotary members from one to the other. Therefore, the driving force transmission device functions as a connecting mechanism between the driving side rotation member and the driven side rotation member in one power transmission system path of the four-wheel drive vehicle, and also between the driving side and the driven side rotation member and both driving sides. It also functions as a differential limiting mechanism between the rotating members or between both driven side rotating members.
【０００５】[0005]
ところで、上記した形式の駆動力伝達装置においては、両回転部材が高差動状 態で連続して作動した場合等には摩擦クラッチが摩擦熱により高温となってハン プ現象を発生させるとともに、摩擦クラッチを焼損させることとにもなる。これ に対処すべく、本出願人は実開平２−６５７２２号公報に示す駆動力伝達装置を 提案している。当該駆動力伝達装置においては、摩擦クラッチに対して押圧力発 生手段からの押圧力を伝達する作動ピストンを、摩擦クラッチから離間させる方 向に付勢する形状記憶合金等の感温性のバネ部材を採用して、摩擦クラッチが高 温に達するとバネ部材の変形により作動ピストンによる摩擦クラッチへの押圧力 を減少させることにより、摩擦クラッチのハンプ現象の発生および焼損の発生を 防止している。本考案の目的は、両回転部材間に高差動状態が発生した場合には 両回転部材を互いに結合して高い差動状態を解消して、摩擦クラッチのハンプ現 象の発生および焼損の発生を防止することにある。 By the way, in the driving force transmission device of the above-mentioned type, when both rotary members continuously operate in a high differential state, the friction clutch becomes high temperature due to frictional heat and causes a hump phenomenon. It also burns out the friction clutch. In order to deal with this, the present applicant has proposed a driving force transmission device shown in Japanese Utility Model Laid-Open No. 2-65722. In the driving force transmission device, a temperature-sensitive spring such as a shape memory alloy that urges the working piston that transmits the pressing force from the pressing force generating means to the friction clutch in the direction of separating from the friction clutch. When the friction clutch reaches a high temperature, the deformation of the spring member reduces the pressing force on the friction clutch by the working piston, preventing the friction clutch from humping and burning. .. The object of the present invention is to eliminate the high differential state by connecting both rotary members to each other when a high differential state occurs between both rotary members, thereby causing a hump phenomenon and a burnout of the friction clutch. Is to prevent.
【０００６】[0006]
本考案は上記した形式の駆動力伝達装置において、前記両回転部材間に複数の プレートをこれら両回転部材の内外側へ移動可能にかつ前記摩擦クラッチに当接 して同摩擦クラッチにて回転可能に周方向へ並列的に配置して、同プレートを前 記両回転部材のいずれか一方には同プレートの周方向への回転により同プレート を前記両回転部材のいずれか他方の回転部材側へ移動して同回転部材に圧接させ るカム手段を介して組付けるとともに前記他方の回転部材には回転可能に組付け 、かつ前記プレートを前記一方の回転部材側へ所定の力で付勢するバネ部材によ り受承したことを特徴とするものである。 According to the present invention, in the driving force transmission device of the above-mentioned type, a plurality of plates can be moved between the rotary members inward and outward of the rotary members and can be rotated by contacting the friction clutch with the friction clutch. Are arranged side by side in the circumferential direction, and the plate is attached to either one of the two rotary members by rotating the plate in the circumferential direction to the other rotary member side of the both rotary members. A spring that moves and assembles the rotary member to the rotary member through a cam means and rotatably installs the rotary member to the other rotary member, and biases the plate toward the one rotary member with a predetermined force. It is characterized in that it is received by members.
【０００７】[0007]
かかる構成の駆動力伝達装置においては、前記プレートがバネ部材の付勢力に よりカム手段を介して両回転部材の一方の回転部材に固定されていて、内外両回 転部材間に高差動状態が発生する以前においては摩擦クラッチにより周方向へ回 転されることはなく、従来のこの種形式の駆動力伝達装置と同様に作動する。ま た、両回転部材間に高差動状態が発生するとプレートが摩擦クラッチにより周方 向へ回転され、プレートの周方向への回転によりカム手段が作動して同プレート をバネ部材に抗して他方の回転部材側へ移動させて同回転部材に圧接する。この ため、両回転部材は同プレートにより周方向に互いに結合され、これら両回転部 材間の高差動状態が解消される。従って、摩擦クラッチのハンプ現象の発生およ び焼損の発生が防止される。 In the driving force transmission device having such a configuration, the plate is fixed to one rotating member of both rotating members via the cam means by the urging force of the spring member, and a high differential state is provided between the inner and outer rotating members. Before the occurrence of the above, the frictional clutch does not rotate in the circumferential direction, and the frictional clutch operates in the same manner as a conventional driving force transmission device of this type. Further, when a high differential state occurs between the rotating members, the plate is rotated in the circumferential direction by the friction clutch, and the rotation of the plate in the circumferential direction actuates the cam means to resist the plate against the spring member. It is moved to the other rotary member side and pressed against the same rotary member. Therefore, both rotary members are connected to each other in the circumferential direction by the same plate, and the high differential state between these rotary members is eliminated. Therefore, it is possible to prevent the hump phenomenon and the burnout of the friction clutch.
【０００８】[0008]
以下本考案の実施例を図面に基づいて説明するに、図１には本考案にかかる駆 動力伝達装置の一実施例が示されている。当該駆動力伝達装置１０は図４に示す ように、リアルタイム式の四輪駆動車の後輪側動力伝達系路に配設される。当該 車両は前輪側が常時駆動するとともに後輪側が必要時駆動するもので、エンジン ２１の一側に組付けたトランスアクスル２２はトランスミッションおよびトラン スフアを備え、エンジン２１からの動力をアクスルシャフト２３に出力して前輪 ２４を駆動させるとともに、第１プロペラシャフト２５に出力する。第１プロペ ラシャフト２５は駆動力伝達装置１０を介して第２プロペラシャフト２６に連結 していて、これら両シャフト２５，２６がトルク伝達可能な場合動力がリヤディ ファレンシャル２７を介してアクスルシャフト２８に出力され、後輪２９が駆動 する。 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a driving force transmission device according to the present invention. As shown in FIG. 4, the driving force transmission device 10 is arranged on the rear wheel side power transmission system path of a real-time four-wheel drive vehicle. The vehicle is always driven by the front wheels and driven by the rear wheels when necessary. The transaxle 22 mounted on one side of the engine 21 has a transmission and a transfer gear, and outputs the power from the engine 21 to the axle shaft 23. Then, the front wheels 24 are driven and output to the first propeller shaft 25. The first propeller shaft 25 is connected to the second propeller shaft 26 via the driving force transmission device 10, and when both the shafts 25, 26 can transmit torque, power is transmitted to the axle shaft 28 via the rear differential 27. It is output and the rear wheels 29 are driven.
【０００９】 駆動力伝達装置１０は外側回転部材であるアウタケース１１およびエンドカバ ー１２と、内側回転部材であるインナシャフト１３からなる環状の作動室内に押 圧力発生手段１０ａおよび摩擦クラッチ１０ｂを備えている。アウタケース１１ は所定長さの筒部１１ａの一端に内向フランジ部１１ｂを備え、筒部１１ａの他 端開口部にエンドカバー１２が螺着されている。インナシャフト１３は所定長さ の段付きの筒部１３ａの中間部外周に外スプライン部１３ｂを備え、かつ筒部１ ３ａの一端側内周には軸方向へ延びる内スプライン部１３ｃを備えている。かか るインナシャフト１３においては、その筒部１３ａの一端がアウタケース１１の 内向フランジ部１１ｂの内孔内に、かつその他端がエンドカバー１２の内孔内に 液密的かつ回転可能に嵌合されて支持されている。インナシャフト１３はその内 スプライン部１３ｃにて第２プロペラシャフト２６の先端部のスプラインに嵌合 して固定され、かつアウタケース１１は第１プロペラシャフト２５の後端に固定 されている。The driving force transmission device 10 includes an outer case 11 and an end cover 12 which are outer rotating members, and a pressing force generating means 10 a and a friction clutch 10 b in an annular working chamber which is composed of an inner shaft 13 which is an inner rotating member. There is. The outer case 11 is provided with an inward flange portion 11b at one end of a tubular portion 11a having a predetermined length, and an end cover 12 is screwed into the other end opening portion of the tubular portion 11a. The inner shaft 13 is provided with an outer spline portion 13b on the outer periphery of a middle portion of a stepped cylindrical portion 13a having a predetermined length, and an inner spline portion 13c extending in the axial direction on the inner periphery of one end side of the cylindrical portion 13a. .. In the inner shaft 13, the one end of the cylindrical portion 13a is fitted in the inner hole of the inward flange portion 11b of the outer case 11 and the other end is fitted in the inner hole of the end cover 12 in a liquid-tight and rotatable manner. Combined and supported. The inner shaft 13 is fixed by fitting it to a spline at the tip of the second propeller shaft 26 at its inner spline portion 13c, and the outer case 11 is fixed to the rear end of the first propeller shaft 25.
【００１０】 押圧力発生手段１０ａは作動ピストン１４およびロータ１５を備え、かつ摩擦 クラッチ１０ｂは湿式多板クラッチ式のもので、多数のクラッチプレート１６ａ およびクラッチディスク１６ｂを備える。各クラッチプレート１６ａはその外周 のスプライン部をアウタケース１１の内周に設けたスプライン部１１ｃに嵌合さ れて、同ケース１１に一体回転可能かつ軸方向へ移動可能に組付けられている。 各クラッチディスク１６ｂはその内周のスプライン部をインナシャフト１３の外 スプライン部１３ｂに嵌合されて各クラッチプレート１６ａ間に位置し、同シャ フト１３に一体回転可能かつ軸方向へ移動可能に組付けられている。これらのク ラッチプレート１６ａおよびクラッチディスク１６ｂの収容室にはクラッチオイ ルと気体とが所定量封入されている。The pressing force generating means 10a comprises an operating piston 14 and a rotor 15, and the friction clutch 10b is of a wet multi-plate clutch type and comprises a number of clutch plates 16a and clutch discs 16b. Each clutch plate 16a has a spline portion on the outer periphery thereof fitted into a spline portion 11c provided on the inner periphery of the outer case 11, and is assembled to the case 11 so as to be integrally rotatable and movable in the axial direction. Each clutch disc 16b has an inner spline portion fitted to the outer spline portion 13b of the inner shaft 13 and is located between the clutch plates 16a, and is assembled to the shaft 13 so as to be integrally rotatable and movable in the axial direction. It is attached. A predetermined amount of clutch oil and gas are sealed in the accommodating chambers of the clutch plate 16a and the clutch disc 16b.
【００１１】 押圧力発生手段１０ａを構成する作動ピストン１４はアウタケース１１の筒部 １１ａの他端側内周に液密的に一体回転可能かつ軸方向へ摺動可能に、またイン ナシャフト１３に対してはその外周に液密的に回転可能かつ軸方向へ摺動可能に それぞれ組付けられていて、その一側面にて図示最右端のクラッチディスク１６ ｂに当接して配置された後述する複数のプレート１７に当接している。ロータ１ ５は図１および図２に示すように、環状ボス部１５ａの外周の互に等間隔離れた 部位にて半径方向へ延びる２枚のベーン部１５ｂを備え、環状ボス部１５ａにて インナシャフト１３の筒部１３ａ外周に嵌合され、同シャフト１３に対して一体 回転可能に組付けられている。かかるロータ１５はエンドカバー１２の一側に設 けた環状凹所１２ａの深さと略同じ厚みに形成されていて、環状凹所１２ａ内に 嵌合している。エンドカバー１２はインナシャフト１３の筒部１３ａの他端側外 周に液密的に軸方向へ摺動可能かつ回転可能に嵌合され、アウタケース１１に対 しては進退可能に螺着され、かつ液密的となっている。かかるエンドカバー１２ においては、軸方向の位置調整がなされてアウタケース１１にカシメ手段にて固 定され、その一側面にて作動ピストン１４の他側面に当接し、作動ピストン１４ とによりロータ１５が位置する流体室を形成している。この流体室内にはシリコ ンオイル等高粘性流体と空気とが所定量封入されており、またロータ１５はその ベーン部１５ｂの外周を環状凹所１２ａの内周に液密的に接触させ、流体室内を ２つの滞留室Ｒに区画している。The actuating piston 14 that constitutes the pressing force generating means 10 a is liquid-tightly integrally rotatable with the inner circumference of the other end side of the tubular portion 11 a of the outer case 11 and slidable in the axial direction. On the other hand, a plurality of members, which will be described later, are mounted on the outer periphery thereof in a liquid-tight manner so as to be rotatable in a liquid-tight manner and slidable in the axial direction, and one side face of which is arranged in contact with the clutch disc 16 b at the right end in the drawing. Is in contact with the plate 17. As shown in FIGS. 1 and 2, the rotor 15 is provided with two vane portions 15b extending in the radial direction at portions of the outer periphery of the annular boss portion 15a that are equally spaced apart from each other. The shaft 13 is fitted to the outer circumference of the cylindrical portion 13a and is integrally rotatably assembled to the shaft 13. The rotor 15 is formed to have a thickness substantially the same as the depth of the annular recess 12a provided on one side of the end cover 12, and is fitted in the annular recess 12a. The end cover 12 is fitted to the outer circumference of the other end side of the cylindrical portion 13a of the inner shaft 13 in a liquid-tight manner so as to be slidable in the axial direction and rotatably, and is screwed to the outer case 11 so as to be able to move forward and backward. , And is liquid-tight. In such an end cover 12, the position adjustment in the axial direction is performed and the outer case 11 is fixed by the crimping means, and one side of the end cover 12 abuts against the other side of the working piston 14, so that the rotor 15 is supported by the working piston 14. It defines a fluid chamber in which it is located. A predetermined amount of highly viscous fluid such as silicone oil and air are enclosed in this fluid chamber, and the rotor 15 has its outer periphery of its vane portion 15b liquid-tightly contacted with the inner periphery of the annular recess 12a, so that the fluid chamber is closed. Is divided into two retention chambers R.
【００１２】 しかして、摩擦クラッチ１０ｂと作動ピストン１４間には図１および図３に示 すように、扇形状の６枚のプレート１７が周方向に並列的に配置されている。各 プレート１７においては、インナシャフト１３の外周に対しては周方向へ回転可 能に組付けられているとともに、アウタケース１１の内周に対してはカム手段を 介して組付けられており、この状態で各プレート１７は互いに隣合う周間隙に配 置したバネ部材１８に受承されて半径方向の外周側へ所定の力で付勢されている 。カム手段はアウタケース１１の内周に設けた断面Ｖ形状の多数のカム溝１１ｄ 、これらに対向して各プレート１７の外周に設けた断面Ｖ形状の多数のカム溝１ ７ａ、および両カム溝１１ｄ，１７ａ間に介装した多数のボール１９により構成 されている。この状態において各プレート１７はバネ部材１８の作用によりカム 手段を介してアウタケース１１と一体的であって、同ケース１１と一体的に回転 する。As shown in FIGS. 1 and 3, six fan-shaped plates 17 are arranged in parallel in the circumferential direction between the friction clutch 10b and the working piston 14. In each plate 17, the outer periphery of the inner shaft 13 is rotatably assembled in the circumferential direction, and the inner periphery of the outer case 11 is assembled via a cam means. In this state, the plates 17 are received by the spring members 18 arranged in the circumferential gaps adjacent to each other, and are biased to the outer peripheral side in the radial direction by a predetermined force. The cam means are a large number of cam grooves 11d having a V-shaped cross section provided on the inner circumference of the outer case 11, a large number of cam grooves 17a having a V-shaped cross section provided on the outer circumference of each plate 17 so as to face them, and both cam grooves. It is composed of a large number of balls 19 interposed between 11d and 17a. In this state, each plate 17 is integrated with the outer case 11 via the cam means by the action of the spring member 18, and rotates integrally with the outer case 11.
【００１３】 また、各プレート１７は一側面にて作動ピストン１４に当接しかつ他側面にて 摩擦クラッチ１０ｂのクラッチディスク１６ｂに当接していて、アウタケース１ １とインナシャフト１３間に相対回転が発生した場合にはクラッチディスク１６ ｂと摩擦摺接する。従って、アウタケース１１とインナシャフト１３間に所定以 上の相対回転が発生した場合には各プレート１７が摩擦クラッチ１０ｂにより周 方向へ回転され、この結果カム手段の作用により各プレート１７が各バネ部材１ ８に抗して半径方向の内周側へ移動してインナシャフト１３の外周に圧接し、同 シャフト１３を締め付ける。Further, each plate 17 is in contact with the actuating piston 14 on one side and in contact with the clutch disc 16 b of the friction clutch 10 b on the other side, so that relative rotation between the outer case 11 and the inner shaft 13 is achieved. When it occurs, it makes frictional sliding contact with the clutch disc 16b. Therefore, when a relative rotation more than a predetermined value occurs between the outer case 11 and the inner shaft 13, each plate 17 is rotated in the circumferential direction by the friction clutch 10b, and as a result, each plate 17 is caused to act by each spring by the action of the cam means. The inner shaft 13 is pressed against the outer periphery of the inner shaft 13 by moving inward in the radial direction against the member 18, and the shaft 13 is tightened.
【００１４】 かかる構成の駆動力伝達装置１０においては、第１、第２両プロペラシャフト ２５，２６間に相対回転が生じるとトルク伝達がなされる。すなわち、これら両 シャフト２５，２６に相対回転が生じると、第１プロペラシャフト２５に一体回 転可能に組付けられているアウタケース１１、エンドカバー１２、作動ピストン １４および各プレート１７と、第２プロペラシャフト２６に一体回転可能に組付 けられているインナシャフト１３およびロータ１５との間に相対回転が生じる。 従って、押圧力発生手段１０ａの流体室内においては、滞留室Ｒ内の粘性流体が 相対回転数に比例した速度にて強制的に流動させられ、周方向に順次相対移行す る滞留室Ｒ内では流動抵抗に起因してベーン部１５ｂの下流側端から次のベーン 部１５ｂの上流側端に向って漸次増圧される圧力分布が発生する。この圧力分布 の増圧部分は差動回転数に比例して増大するもので、作動ピストン１４を軸方向 へ押圧する。この結果、作動ピストン１４は各プレート１７を介して摩擦クラッ チ１０ｂを押圧し、各クラッチプレート１６ａとクラッチディスク１６ｂをクラ ッチオイルを介して摩擦係合させる。これにより、摩擦クラッチ１０ｂにおいて は差動回転数に比例したトルクをアウタケース１１からインナシャフト１３に伝 達し、車両は４輪駆動状態となる。また、この４輪駆動状態においては前後輪の 差動回転を許容し、タイトコーナブレーキング現象の発生も防止される。In the driving force transmission device 10 having such a configuration, torque is transmitted when relative rotation occurs between the first and second propeller shafts 25 and 26. That is, when the shafts 25 and 26 rotate relative to each other, the outer case 11, the end cover 12, the working piston 14 and the plates 17 that are integrally rotatably assembled to the first propeller shaft 25 and the second Relative rotation occurs between the inner shaft 13 and the rotor 15 that are integrally rotatably mounted on the propeller shaft 26. Therefore, in the fluid chamber of the pressing force generating means 10a, the viscous fluid in the retention chamber R is forcibly flown at a speed proportional to the relative rotational speed, and in the retention chamber R that sequentially shifts in the circumferential direction. Due to the flow resistance, a pressure distribution in which the pressure is gradually increased from the downstream end of the vane portion 15b toward the upstream end of the next vane portion 15b is generated. The pressure increasing portion of this pressure distribution increases in proportion to the differential rotation speed and presses the working piston 14 in the axial direction. As a result, the actuating piston 14 presses the friction clutch 10b via each plate 17 and frictionally engages each clutch plate 16a with the clutch disc 16b via clutch oil. As a result, in the friction clutch 10b, torque proportional to the differential rotation speed is transmitted from the outer case 11 to the inner shaft 13, and the vehicle is in the four-wheel drive state. Further, in this four-wheel drive state, differential rotation of the front and rear wheels is allowed, and the occurrence of the tight corner braking phenomenon is prevented.
【００１５】 ところで、当該駆動力伝達装置１０においては、アウタケース１１とインナシ ャフト１３間の相対回転数が大きくなつた場合、すなわち両プロペラシャフト２ ５，２６間に高差動状態が発生した場合には各プレート１７が摩擦クラッチ１０ ｂにより周方向へ回転され、この結果カム手段の作用により各プレート１７が各 バネ部材１８に抗して半径方向の内周側へ移動してインナシャフト１３の外周に 圧接し、同シャフト１３を締め付ける。この結果、アウタケース１１とインナシ ャフト１３とは各プレート１７を介して結合するためアウタケース１１とインナ シャフト１３間の高差動状態が解消され、摩擦クラッチ１０ｂのハンプ現象の発 生および焼損の発生が防止される。By the way, in the driving force transmission device 10, when the relative rotational speed between the outer case 11 and the inner shaft 13 increases, that is, when a high differential state occurs between the propeller shafts 25 and 26. Each plate 17 is rotated in the circumferential direction by the friction clutch 10b, and as a result, each plate 17 is moved radially inward against each spring member 18 by the action of the cam means to move the inner shaft 13 to the inner side. It is pressed against the outer circumference and the shaft 13 is tightened. As a result, since the outer case 11 and the inner shaft 13 are connected to each other via the plates 17, the high differential state between the outer case 11 and the inner shaft 13 is eliminated, and the hump phenomenon of the friction clutch 10b occurs and burnout occurs. Occurrence is prevented.
【図１】本考案の一実施例に係る駆動力伝達装置の断面
図である。FIG. 1 is a sectional view of a driving force transmission device according to an embodiment of the present invention.
【図２】同装置を構成するロータの正面図である。FIG. 2 is a front view of a rotor that constitutes the same device.
【図３】同装置における図１の矢印３−３方向に見た断
面図である。3 is a cross-sectional view of the same device as seen in the direction of arrow 3-3 in FIG.
【図４】同装置を採用した車両の概略構成図である。FIG. 4 is a schematic configuration diagram of a vehicle employing the same device.
１０…駆動力伝達装置、１０ａ…押圧力発生手段、１０
ｂ…摩擦クラッチ、１１…アウタケース、１１ｄ…カム
溝、１２…アウタカバー、１３…インナシャフト、１４
…作動ピストン、１５…ロータ、１５ｂ…ベーン部、１
７…プレート、１７ａ…カム溝、１８…バネ部材、１９
…ボール、２５，２６…プロペラシャフト、Ｒ…滞留室
（流体室）。10 ... Driving force transmission device, 10a ... Pressing force generating means, 10
b ... Friction clutch, 11 ... Outer case, 11d ... Cam groove, 12 ... Outer cover, 13 ... Inner shaft, 14
... Working piston, 15 ... Rotor, 15b ... Vane part, 1
7 ... Plate, 17a ... Cam groove, 18 ... Spring member, 19
... Balls, 25, 26 ... Propeller shafts, R ... Retaining chambers (fluid chambers).
Claims (1)
回転部材間に収容され前記両回転部材の相対回転により
作動してこれら両回転部材をトルク伝達可能に連結する
摩擦係合力を発生させるとともに付与される軸方向の押
圧力に応じて前記摩擦係合力を増減させる摩擦クラッ
チ、および前記両回転部材の相対回転に応じた軸方向の
押圧力を発生させて同押圧力を前記摩擦クラッチに付与
する押圧力発生手段を備えてなる駆動力伝達装置におい
て、前記両回転部材間に複数のプレートをこれら両回転
部材の内外周側へ移動可能にかつ前記摩擦クラッチに当
接して同摩擦クラッチにて回転可能に周方向へ並列的に
配置して、同プレートを前記両回転部材のいずれか一方
には同プレートの周方向への回転により同プレートを前
記両回転部材のいずれか他方の回転部材側へ移動して同
回転部材に圧接させるカム手段を介して組付けるととも
に前記他方の回転部材には回転可能に組付け、かつ前記
プレートを前記一方の回転部材側へ所定の力で付勢する
バネ部材により受承したことを特徴とする駆動力伝達装
置。1. A frictional engagement force that is housed between both inner and outer rotary members that are coaxially and relatively rotatable and that is activated by relative rotation of the two rotary members to connect the two rotary members so that torque can be transmitted. A friction clutch that increases or decreases the frictional engagement force according to the axial pressing force applied with it, and an axial pressing force is generated according to the relative rotation of the rotating members to generate the pressing force on the friction clutch. In a driving force transmission device comprising a pressing force generating means for applying, a plurality of plates are movable between the both rotary members toward the inner and outer peripheral sides of the both rotary members and contact the friction clutch to form the same friction clutch. And rotatably arranged in parallel in the circumferential direction, and the plate is placed on either one of the rotary members by rotating the plate in the circumferential direction. Or to the other rotating member side by assembling via a cam means for making pressure contact with the rotating member and rotatably assembling to the other rotating member, and the plate to the one rotating member side by a predetermined amount. A driving force transmission device, which is received by a spring member that is biased by force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1358092U JPH0574960U (en) | 1992-03-16 | 1992-03-16 | Driving force transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1358092U JPH0574960U (en) | 1992-03-16 | 1992-03-16 | Driving force transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0574960U true JPH0574960U (en) | 1993-10-12 |
Family
ID=11837115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1358092U Pending JPH0574960U (en) | 1992-03-16 | 1992-03-16 | Driving force transmission device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0574960U (en) |
-
1992
- 1992-03-16 JP JP1358092U patent/JPH0574960U/en active Pending
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