JP2540077B2 - Differential limiting device - Google Patents

Differential limiting device

Info

Publication number
JP2540077B2
JP2540077B2 JP1232885A JP23288589A JP2540077B2 JP 2540077 B2 JP2540077 B2 JP 2540077B2 JP 1232885 A JP1232885 A JP 1232885A JP 23288589 A JP23288589 A JP 23288589A JP 2540077 B2 JP2540077 B2 JP 2540077B2
Authority
JP
Japan
Prior art keywords
pressure
piston
cylinder
differential case
plate clutch
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.)
Expired - Lifetime
Application number
JP1232885A
Other languages
Japanese (ja)
Other versions
JPH0396437A (en
Inventor
謙一 大森
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.)
Hino Motors Ltd
Original Assignee
Hino Motors Ltd
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 Hino Motors Ltd filed Critical Hino Motors Ltd
Priority to JP1232885A priority Critical patent/JP2540077B2/en
Publication of JPH0396437A publication Critical patent/JPH0396437A/en
Application granted granted Critical
Publication of JP2540077B2 publication Critical patent/JP2540077B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F16H48/00—Differential gearings
    • F16H48/38—Constructional details
    • F16H48/42—Constructional details characterised by features of the input shafts, e.g. mounting of drive gears thereon
    • F16H2048/423—Constructional details characterised by features of the input shafts, e.g. mounting of drive gears thereon characterised by bearing arrangement
    • F16H2048/426—Constructional details characterised by features of the input shafts, e.g. mounting of drive gears thereon characterised by bearing arrangement characterised by spigot bearing arrangement, e.g. bearing for supporting the free end of the drive shaft pinion

Landscapes

  • Motor Power Transmission Devices (AREA)
  • Retarders (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、入力軸の回転動力を左右２つの駆動軸に配
分する差動装置において、必要に応じて左右の駆動軸を
同一の回転で駆動するようにした差動制限装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a differential device that distributes the rotational power of an input shaft to two drive shafts, a left drive shaft and a left drive shaft. The present invention relates to a limited slip differential that is driven.

〈従来の技術〉 上記のような差動制限装置は、駆動軸に結合されたサ
イドギヤと、デフケースとの間に多板クラッチと、この
クラッチを圧接方向に押圧する加圧ピストンとを設け、
加圧ピストンを圧油またはエアにより作動させ、悪路あ
るいは不整地での脱出性能の向上の他に、アンダステア
（US）−オーバステア（OS）特性を適度なオーバステア
とし操縦性を向上し、また適度なアンダステアとし走行
安定性を図っている。<Prior Art> A differential limiting device as described above is provided with a multi-plate clutch between a side gear coupled to a drive shaft and a differential case, and a pressure piston for pressing the clutch in a pressure contact direction,
The pressurizing piston is operated by pressure oil or air to improve the escape performance on rough roads and rough terrain, and to improve the maneuverability by making the understeer (US) -oversteer (OS) characteristic moderate oversteer. Understeer is used to ensure running stability.

〈発明が解決しようとする課題〉 上記の差動制限装置において、加圧ピストンを圧油で
作動して多板クラッチを圧接方向に押圧するものにあっ
ては、高速走行時に加圧ピストンの後方室に残留してい
る油が遠心力によって移動し内圧が発生して加圧ピスト
ンを作動し、不必要な時に多板クラッチを圧接して差動
制限する場合がある。<Problems to be Solved by the Invention> In the above-mentioned differential limiting device, in which the pressurizing piston is operated by the pressure oil to press the multi-plate clutch in the press-contact direction, the rear side of the pressurizing piston during high speed traveling is considered. In some cases, the oil remaining in the chamber is moved by centrifugal force to generate an internal pressure to operate the pressurizing piston, and the multi-plate clutch is press-contacted to limit the differential operation when unnecessary.

〈課題を解決するための手段〉 本発明は、上記のような従来の問題点を解決したもの
で、その特徴とする構成は、回転可能に軸承されたデフ
ケースの外周に入力ギヤに噛み合うリングギヤを固定
し、このデフケースにピニオンギヤを回転軸線と直角な
軸線回りに回転可能に軸承し、ピニオンギヤの両側に噛
み合う一対のサイドギヤをデフケースの左右にそれぞれ
回転可能に軸承し、一対のサイドギヤをそれぞれ左右両
側に延びる駆動軸に連結し、前記何れか一方のサイドギ
ヤとデフケースとの間に回転方向を係合し軸線方向は移
動可能なインナプレートおよびアウタプレートを交互に
対接配置した多板クラッチを設け、この多板クラッチを
圧接方向に押圧する加圧ピストンを有する差動制限装置
において、前記加圧ピストンの前面側を凸面に、後面側
を凹面に形成し、この加圧ピストンが嵌装されるシリン
ダを形成している前記加圧ピストンの前面側と対面した
リテーナに前記加圧ピストンの前面側の凸面が嵌入する
凹面部が形成され、前記加圧ピストンの前面側の周縁に
前記リテーナから突出して前記多板クラッチに当接する
突起部を設け、前記加圧ピストンの前後面両側のシリン
ダ室の受圧面積を等しくし、このシリンダ室に油圧をそ
れぞれ給排する通路を設けたものである。<Means for Solving the Problems> The present invention solves the conventional problems as described above, and has a characteristic configuration in which a ring gear meshing with an input gear is provided on the outer periphery of a differential case rotatably supported. The pinion gear is fixed to this diff case so that it can rotate about an axis perpendicular to the rotation axis, and a pair of side gears that mesh with both sides of the pinion gear are supported so that they can rotate left and right, respectively, and a pair of side gears respectively on the left and right sides. A multi-plate clutch in which an inner plate and an outer plate, which are connected to an extending drive shaft and engage in the rotational direction between any one of the side gears and the differential case and which are movable in the axial direction, are alternately arranged in contact with each other, is provided. In a differential limiting device having a pressure piston that presses a multi-plate clutch in a pressure contact direction, the pressure piston has a convex front surface. , A concave surface portion in which the rear surface side is formed into a concave surface, and the convex surface on the front surface side of the pressure piston is fitted into the retainer facing the front surface side of the pressure piston forming the cylinder into which the pressure piston is fitted. Is formed, and a protrusion portion that protrudes from the retainer and abuts against the multi-plate clutch is provided on the peripheral edge on the front surface side of the pressure piston to equalize the pressure receiving areas of the cylinder chambers on both front and rear surfaces of the pressure piston. The cylinder chamber is provided with passages for supplying and discharging hydraulic pressure.

〈作用〉 上記の構成により、加圧ピストンとそのシリンダの軸
線長を短くしてコンパクトにし、また、加圧ピストンの
前後の両シリンダ室に油が残留し、これが遠心力が作用
しても両シリンダ室は等しい受圧面積であるため、加圧
ピストンの前進移動を打ち消して走行中における多板ク
ラッチの圧接作動を防止する。<Operation> With the above configuration, the axial length of the pressurizing piston and its cylinder is shortened to make it compact, and oil remains in both cylinder chambers in front of and behind the pressurizing piston. Since the cylinder chambers have the same pressure receiving area, the forward movement of the pressure piston is canceled to prevent the pressure contact operation of the multi-plate clutch during traveling.

〈実施例〉 以下本発明の実施例を図面に基づいて説明する。10は
キャリヤケース、11はキャリヤケース10に回転可能に軸
承された入力軸、12はキャリヤケース10に入力軸11の回
転軸線と直交する軸線回りに回転可能に軸承されたデフ
ケース、13a,13bはデフケース12の回転軸線と同時にそ
れぞれ左右方向に延びる駆動軸であり駆動輪が取付けら
れる。<Example> An example of the present invention will be described below with reference to the drawings. 10 is a carrier case, 11 is an input shaft rotatably supported by the carrier case 10, 12 is a differential case rotatably supported by the carrier case 10 about an axis orthogonal to the rotation axis of the input shaft 11, and 13a and 13b are At the same time as the rotation axis of the differential case 12, the drive shaft extends in the left-right direction, and the drive wheels are attached thereto.

入力軸11にはドライブピニオンギヤ14が形成され、こ
のドライブピニオンギヤ14に噛み合うリングギヤ15がデ
フケース12の外周に固定されている。デフケース12内に
は、デフケース12の回転軸線と直交してスパイダ16が固
定され、このスパイダ16にピニオンギヤ17が回転可能に
軸承されている。A drive pinion gear 14 is formed on the input shaft 11, and a ring gear 15 meshing with the drive pinion gear 14 is fixed to the outer periphery of the differential case 12. A spider 16 is fixed in the differential case 12 orthogonally to the rotation axis of the differential case 12, and a pinion gear 17 is rotatably supported by the spider 16.

前記ピニオンギヤ17の左右両側で一対のサイドギヤ18
a,18bが噛み合い、このサイドギヤ18a,18bはデフケース
12にデフケース12の回転軸線と同軸に回転可能に軸承さ
れ、左側のサイドギヤ18aには左側の駆動軸13aが同軸線
でスプライン結合し、右側のサイドギヤ18bには右側の
駆動軸13bが同軸線でスプライン結合されている。A pair of side gears 18 are provided on both left and right sides of the pinion gear 17.
The side gears 18a and 18b are in the differential case.
The left side gear 18a is spline-coupled to the left side gear 18a by a coaxial line, and the right side gear 18b is a right side drive shaft 13b by a coaxial line. Splined.

前記左右のサイドギヤ18a,18bの何れか一方（図例で
は右側のサイドギヤ18b）のサイドギヤ18bのブッシュ19
の外周にブッシュ19の軸線方向と同方向のスプラインを
設け、このスプラインと対向するデフケース12の内周に
もスプラインを設ける。前記ブッシュ19側のスプライン
に多数のインナプレート22を係合し、デフケース12側の
スプラインに多数のアウタプレート23を係合する。この
インナプレート22とアウタプレート23とは交互に対接配
置され、いわゆる多板クラッチ24を形成している。One of the left and right side gears 18a, 18b (the right side gear 18b in the example) is a bush 19 of the side gear 18b.
A spline is provided on the outer circumference of the bush 19 in the same direction as the axial direction of the bush 19, and a spline is also provided on the inner circumference of the differential case 12 facing the spline. A large number of inner plates 22 are engaged with the splines on the bush 19 side, and a large number of outer plates 23 are engaged with the splines on the differential case 12 side. The inner plates 22 and the outer plates 23 are alternately arranged in contact with each other to form a so-called multi-plate clutch 24.

さらに、デフケース12には前記多板クラッチ24を接続
方向に押圧する加圧ピストン26が設けられている。Further, the differential case 12 is provided with a pressure piston 26 for pressing the multi-plate clutch 24 in the connecting direction.

この加圧ピストン26は、その前面側を凸面に、また、
後面側を凹面に形成されており、デフケース12に向けら
れたシリンダ内に進退可能に嵌装され、前進作動により
前記多板クラッチ24を圧接する。The pressurizing piston 26 has a convex front surface,
The rear surface side is formed into a concave surface, and is fitted in a cylinder facing the differential case 12 so as to be able to move forward and backward, and presses the multi-plate clutch 24 by forward movement.

また、前記加圧ピストン26が嵌装されるシリンダを形
成している前記加圧ピストン26の前面側と対面したリテ
ーナ30には、前記加圧ピストン26の前面側の凸面が嵌入
する凹面部が形成されている。Further, the retainer 30 facing the front surface side of the pressure piston 26 forming a cylinder into which the pressure piston 26 is fitted has a concave surface portion into which the convex surface on the front surface side of the pressure piston 26 is fitted. Has been formed.

前記加圧ピストン26が嵌装されるシリンダは、加圧ピ
ストン26の前方のシリンダ前室25aと加圧ピストン26の
後方のシリンダ後室25bとによって構成され、シリンダ
前，後室25a,25bは互いに等しい受圧面積である。そし
て、加圧ピストン26の前面側の周縁に前記リテーナ30か
ら突出して前記多板クラッチ24に当接する突起部26aが
設けられている。The cylinder in which the pressurizing piston 26 is fitted is composed of a cylinder front chamber 25a in front of the pressurizing piston 26 and a cylinder rear chamber 25b in the rear of the pressurizing piston 26, and the cylinder front and rear chambers 25a, 25b are The pressure receiving areas are equal to each other. Further, a protrusion portion 26 a that protrudes from the retainer 30 and abuts against the multi-plate clutch 24 is provided on the peripheral edge on the front surface side of the pressure piston 26.

また、デフケース12には前記シリンダ前，後室25a,25
bにそれぞれ連通するロータリ通路29a,29bが設けられ、
これにスリップリング28を介して油圧給排通路27a,27b
が連通している。The differential case 12 has a front chamber 25a, a rear chamber 25a, and a rear chamber 25a.
rotary passages 29a and 29b, which communicate with b, respectively, are provided.
A hydraulic supply / discharge passage 27a, 27b
Are in communication.

本発明は上記の通りの構造であるから、油圧給排通路
27bより油圧を供給すると、シリンダ後室25bに導入さ
れ、加圧ピストン26が前進する。これによりシリンダ前
室25aの油は油圧給排通路27aより排出され、加圧ピスト
ン26は、その突出部26aによって多板クラッチ24を押圧
して圧接する。Since the present invention has the structure as described above, the hydraulic pressure supply / discharge passage
When hydraulic pressure is supplied from 27b, it is introduced into the cylinder rear chamber 25b, and the pressurizing piston 26 advances. As a result, the oil in the cylinder front chamber 25a is discharged from the hydraulic pressure supply / discharge passage 27a, and the pressurizing piston 26 presses the multi-plate clutch 24 by its projecting portion 26a to press-contact it.

前記多板クラッチ24の圧接を解除するには油圧給排通
路27aより油圧を供給し、シリンダ前室25aに導入するこ
とにより加圧ピストン26は後退してシリンダ後室25bの
油を油圧給排通路27bより排出する。To release the pressure contact of the multi-plate clutch 24, hydraulic pressure is supplied from the hydraulic pressure supply / discharge passage 27a and introduced into the cylinder front chamber 25a so that the pressurizing piston 26 retracts to hydraulically supply / discharge the oil in the cylinder rear chamber 25b. Discharge from the passage 27b.

この加圧ピストン26の後退状態で、走行によりシリン
ダ前、後室25a,25bに残留している油に遠心力が作用す
るが、シリンダ前，後室25a,25bは受圧面積が等しいた
め、加圧ピストン26の前進移動を拘束する。むしろ、加
圧ピストン26を後退作動するために、シリンダ前室25a
に油が供給され、シリンダ後室25bは油を排出している
ので、油の残留量としてはシリンダ前室25a側が多量で
あり、遠心力で加圧ピストン26に作用する押圧力はシリ
ンダ前室25a側が大となり、加圧ピストン26を後退方向
に移動保持する傾向となるので多板クラッチ24の接続は
確実に防止される。In the retracted state of the pressurizing piston 26, centrifugal force acts on the oil remaining in the front and rear chambers 25a and 25b of the cylinder due to traveling, but since the front and rear chambers 25a and 25b of the cylinder have the same pressure receiving area, The forward movement of the pressure piston 26 is restricted. Rather, the cylinder front chamber 25a
Since the oil is supplied to the cylinder rear chamber 25b and the oil is discharged from the cylinder rear chamber 25b, the residual amount of oil is large on the cylinder front chamber 25a side, and the pressing force acting on the pressurizing piston 26 by the centrifugal force is the cylinder front chamber. Since the 25a side becomes large and the pressurizing piston 26 tends to move and hold in the backward direction, the connection of the multi-plate clutch 24 is reliably prevented.

また、前記加圧ピストン26は、その前面側を凸面に、
また、後面側を凹面に形成され、前記加圧ピストン26の
前面側と対面しているリテーナ30に形成されている凹面
部に前記加圧ピストン26の前面側の凸面が嵌入し、加圧
ピストン26の前面側の周縁に前記リテーナ30から突出し
て設けられている突起部26aが前記多板クラッチ24に当
接した構成により、加圧ピストン26とシリンダの軸線長
が短くなり、多板クラッチ24を作動する圧力応動装置の
形態をコンパクトにすると共に、多板クラッチ24を作動
する出力を十分に保持している。Further, the pressure piston 26 has a convex surface on the front side,
Further, the rear surface side is formed into a concave surface, the convex surface of the front surface side of the pressure piston 26 is fitted into the concave surface portion formed in the retainer 30 facing the front surface side of the pressure piston 26, and the pressure piston With the configuration in which the protrusion 26a provided so as to project from the retainer 30 on the peripheral edge on the front surface side of the 26 abuts on the multi-plate clutch 24, the axial length of the pressure piston 26 and the cylinder is shortened, and the multi-plate clutch 24 The form of the pressure response device for operating the multi-disc clutch 24 is made compact and the output for operating the multi-plate clutch 24 is sufficiently maintained.

〈発明の効果〉 以上のように本発明によると、多板クラッチを圧接方
向に押圧する加圧ピストンの両側（前後）に受圧面積の
等しいシリンダ室を設けた構成であるから、多板クラッ
チの非圧接状態において、走行によりシリンダ室内に残
留する油に遠心力が作用しても、前後シリンダ室の発生
圧力は同圧であり、加圧ピストンの前進移動が拘束さ
れ、また、シリンダ後室は油の排出側に通じているた
め、シリンダ前室と後室とには差圧が生じるため、加圧
ピストンが前進して多板クラッチを圧接する不具合を簡
単な構成によって確実に解消し、走行安定性が確保され
る。<Effect of the Invention> As described above, according to the present invention, since the cylinder chambers having the same pressure receiving area are provided on both sides (front and rear) of the pressure piston that presses the multi-plate clutch in the pressure contact direction, Even if centrifugal force acts on the oil remaining in the cylinder chamber due to traveling in the non-pressure contact state, the generated pressure in the front and rear cylinder chambers is the same, the forward movement of the pressurizing piston is restricted, and the cylinder rear chamber is Since it communicates with the oil discharge side, a differential pressure is generated between the cylinder front chamber and rear chamber.Therefore, the problem that the pressurizing piston moves forward and presses the multi-plate clutch is reliably eliminated with a simple configuration, and traveling Stability is secured.

また、加圧ピストン形状及びシリンダを形成するリテ
ーナの形状により多板クラッチを作動する圧力応動装置
の軸線長が短いコンパクトな構成となり、作動制限装置
を内蔵する作動装置において、デフケースの駆動軸軸線
方向の長さを短くした小型化がが実現できる。Also, due to the shape of the pressurizing piston and the shape of the retainer that forms the cylinder, the pressure responding device that operates the multi-plate clutch has a compact axial length, and in an operating device that incorporates an operation limiting device, the direction of the drive shaft axis of the differential case The size can be reduced by shortening the length.

【図面の簡単な説明】[Brief description of drawings]

第１図は本発明装置の断面図である。 10……キャリヤケース、11……入力軸、12……デフケー
ス、13a,13b……駆動軸、15……リングギヤ、17……ピ
ニオンギヤ、18a,18b……サイドギヤ、24……多板クラ
ッチ、25a……シリンダ前室、25b……シリンダ後室、26
……加圧ピストン、26a……突起部。FIG. 1 is a sectional view of the device of the present invention. 10 ... Carrier case, 11 ... Input shaft, 12 ... Differential case, 13a, 13b ... Drive shaft, 15 ... Ring gear, 17 ... Pinion gear, 18a, 18b ... Side gear, 24 ... Multi-disc clutch, 25a ...... Cylinder front chamber, 25b …… Cylinder rear chamber, 26
...... Pressure piston, 26a ...... Protrusion.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】回転可能に軸承されたデフケースの外周に
入力ギヤに噛み合うリングギヤを固定し、このデフケー
スにピニオンギヤを回転軸線と直角な軸線回りに回転可
能に軸承し、ピニオンギヤの両側に噛み合う一対のサイ
ドギヤをデフケースの左右にそれぞれ回転可能に軸承
し、一対のサイドギヤをそれぞれ左右両側に延びる駆動
軸に連結し、前記何れか一方のサイドギヤとデフケース
との間に回転方向を係合し軸線方向は移動可能なインナ
プレートおよびアウタプレートを交互に対接配置した多
板クラッチを設け、この多板クラッチを圧接方向に押圧
する加圧ピストンを有する差動制限装置において、 前記加圧ピストンの前面側を凸面に、後面側を凹面に形
成し、この加圧ピストンが嵌装されるシリンダを形成し
ている前記加圧ピストンの前面側と対面したリテーナに
前記加圧ピストンの前面側の凸面が嵌入する凹面部が形
成され、 前記加圧ピストンの前面側の周縁に前記リテーナから突
出して前記多板クラッチに当接する突起部を設け、 前記加圧ピストンの前後面両側のシリンダ室の受圧面積
を等しくし、このシリンダ室に油圧をそれぞれ給排する
通路を設けたことを特徴とする差動制限装置。1. A ring gear that meshes with an input gear is fixed to the outer periphery of a rotatably supported differential case, and a pinion gear is rotatably supported on the differential case around an axis perpendicular to the axis of rotation. The side gears are rotatably supported on the left and right sides of the differential case, and the pair of side gears are connected to the drive shafts extending on the left and right sides respectively.The rotation direction is engaged between any one of the side gears and the differential case, and the axial direction moves. In a differential limiting device having a multi-plate clutch in which inner plates and outer plates capable of being alternately arranged in contact with each other are provided, and a pressurizing piston for pressing the multi-plate clutch in a pressure contact direction, a front surface side of the pressurizing piston is a convex surface. The rear surface side is formed into a concave surface, and the pressure piston which forms a cylinder into which the pressure piston is fitted is formed. A concave portion into which a convex surface on the front side of the pressure piston is fitted is formed in a retainer facing the front surface side of the pressure piston, and a projection portion that protrudes from the retainer and abuts against the multi-plate clutch at the peripheral edge of the pressure piston on the front surface side The differential limiting device is characterized in that the pressure receiving areas of the cylinder chambers on both front and rear surfaces of the pressurizing piston are made equal, and passages for respectively supplying and discharging hydraulic pressure are provided in the cylinder chambers.
JP1232885A 1989-09-11 1989-09-11 Differential limiting device Expired - Lifetime JP2540077B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1232885A JP2540077B2 (en) 1989-09-11 1989-09-11 Differential limiting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1232885A JP2540077B2 (en) 1989-09-11 1989-09-11 Differential limiting device

Publications (2)

Publication Number Publication Date
JPH0396437A JPH0396437A (en) 1991-04-22
JP2540077B2 true JP2540077B2 (en) 1996-10-02

Family

ID=16946369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1232885A Expired - Lifetime JP2540077B2 (en) 1989-09-11 1989-09-11 Differential limiting device

Country Status (1)

Country Link
JP (1) JP2540077B2 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6135785Y2 (en) * 1981-05-19 1986-10-17
JPS6377151U (en) * 1986-11-10 1988-05-23

Also Published As

Publication number Publication date
JPH0396437A (en) 1991-04-22

Similar Documents

Publication Publication Date Title
JPH0542653Y2 (en)
US5148900A (en) Viscous coupling apparatus with coined plates and method of making the same
US4885957A (en) Disconnectable transmission assemblies
US5540119A (en) Cam-actuated clutch differential drive assembly
US4867010A (en) Differential lock with non-rotating hydraulically actuated piston
JP2540077B2 (en) Differential limiting device
US5232075A (en) Viscous coupling apparatus with coined plates
US4315441A (en) Transmission for a hydraulically driven vehicle
JPH0663556B2 (en) Automatic transmission for four-wheel drive vehicles
JP3745128B2 (en) Limited slip differential gear
JPH0644739Y2 (en) Differential limiting device
JPH01250671A (en) Lubricating device for differential limitting device
JP2001163079A (en) Power transmission device for four-wheel drive vehicle
JP2711404B2 (en) Differential gearing
US5398793A (en) Viscous coupling apparatus with opposing coined plates
JP2820848B2 (en) Gear-type transmission clutch device
JPH07243508A (en) Clutch device and differential device
JPH06103049B2 (en) Driving force distribution device for four-wheel drive vehicle
JP2917997B2 (en) Power transmission device
JPH0492131A (en) Power transmission device
JP3776289B2 (en) Limited slip differential gear
JP4162302B2 (en) Differential lock operating device for work vehicle
JP2584826Y2 (en) Differential limiter
JP2530023B2 (en) Vehicle power transmission device
JP2722208B2 (en) Power distribution device for four-wheel drive vehicles