JP2554060Y2 - Viscous coupling device - Google Patents
Viscous coupling deviceInfo
- Publication number
- JP2554060Y2 JP2554060Y2 JP1989039606U JP3960689U JP2554060Y2 JP 2554060 Y2 JP2554060 Y2 JP 2554060Y2 JP 1989039606 U JP1989039606 U JP 1989039606U JP 3960689 U JP3960689 U JP 3960689U JP 2554060 Y2 JP2554060 Y2 JP 2554060Y2
- Authority
- JP
- Japan
- Prior art keywords
- hub member
- case
- coupling device
- working chamber
- side wall
- 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 - Fee Related
Links
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- Arrangement And Driving Of Transmission Devices (AREA)
- Mechanical Operated Clutches (AREA)
- Retarders (AREA)
Description
【考案の詳細な説明】 ［考案の目的］ （産業上の利用分野） この考案は、例えば車両等の動力伝達装置に用いられ
るビスカスカップリング装置に関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a viscous coupling device used for a power transmission device such as a vehicle.
（従来の技術） 従来のこの種のビスカスカップリング装置としては、
例えば特開昭63−186051号公報に記載のものと同様な第
３図に示すようなものがある。(Prior art) Conventional viscous coupling devices of this type include:
For example, there is one similar to that shown in FIG. 3 described in Japanese Patent Application Laid-Open No. 63-188601.
このビスカスカップリング装置101は、ケース103の内
部にハブ部材105が同心軸上に配設され相対回転可能に
嵌合されており、前記ケース103とハブ部材105との間に
密閉状に形成された作動室107が設けられている。In this viscous coupling device 101, a hub member 105 is disposed concentrically inside the case 103 and is fitted so as to be relatively rotatable, and is formed in a sealed state between the case 103 and the hub member 105. Working chamber 107 is provided.
前記ケース103は外筒部材109と、この外筒部材109の
両端に結合された側壁部材111,113とで構成されてい
る。The case 103 includes an outer cylinder member 109 and side wall members 111 and 113 connected to both ends of the outer cylinder member 109.
側壁部材111にはケース103の内部において軸支部115
が形成され、この軸支部115にハブ部材105の一端部が回
転自在に支持されている。The side wall member 111 has a shaft support 115 inside the case 103.
Is formed, and one end of the hub member 105 is rotatably supported by the shaft support 115.
前記ハブ部材103の他端部には該ハブ部材105の軸方向
の移動を規制する段差部117を有する小径部119が形成さ
れており、この小径部119を側壁部材113の内周に回転自
在に嵌合させている。At the other end of the hub member 103, a small-diameter portion 119 having a step portion 117 for regulating the axial movement of the hub member 105 is formed, and the small-diameter portion 119 is rotatable around the inner periphery of the side wall member 113. Is fitted.
前記作動室107内には粘性流体が封入され、この作動
室107において交互に配設されると共に一方はケース103
側に、他方はハブ部材105側にそれぞれ回転方向に係合
する複数の抵抗板121,123を設けて構成されている。A viscous fluid is sealed in the working chamber 107, and is alternately arranged in the working chamber 107,
On the other hand, a plurality of resistance plates 121 and 123 are provided on the hub member 105 side, respectively, which are engaged with each other in the rotation direction.
そして、前記ケース103,ハブ部材105と一体に回転す
る複数の抵抗板121,123が相対回転を起そうとすると
き、粘性流体の粘性抵抗によって動力を伝達する。Then, when the plurality of resistance plates 121 and 123 rotating integrally with the case 103 and the hub member 105 are about to rotate relative to each other, power is transmitted by viscous resistance of the viscous fluid.
（考案が解決しようとする課題） ところで、このようなビスカスカップリング装置の伝
達トルク特性は、例えば粘性流体の粘性特性によって変
化する。(Problems to be Solved by the Invention) By the way, the transmission torque characteristics of such a viscous coupling device change depending on, for example, the viscosity characteristics of a viscous fluid.
また、このようなビスカスカップリング装置は、抵抗
板121,123の相対回転に伴って粘性流体の温度が上昇す
ると、作動室107内の内圧も上昇する。この作動室107内
の内圧が高まると、この内圧が作動室107内におけるハ
ブ部材105の左右両端面に作用する。Further, in such a viscous coupling device, when the temperature of the viscous fluid increases with the relative rotation of the resistance plates 121 and 123, the internal pressure in the working chamber 107 also increases. When the internal pressure in the working chamber 107 increases, the internal pressure acts on the left and right end surfaces of the hub member 105 in the working chamber 107.
そして、上記従来例のようにハブ部材105の左右両端
面の受圧面積が異る場合、すなわち、側壁部材111側の
受圧面積F1に対して側壁部材113側の受圧面積F2が小さ
く（F1＞F2）形成されている場合には、受圧面積F1側に
かかる全圧の方が大きいため、ハブ部材105にスラスト
力が作用し、ハブ部材105が側壁部材113側へ押圧移動さ
れる。When the pressure receiving area of the left and right end surface of the hub member 105 as in the above prior art is present, i.e., small pressure receiving area F 2 of the side wall member 113 side of the pressure receiving area F 1 of the side wall member 111 side (F 1 > F 2 ), since the total pressure applied to the pressure receiving area F 1 side is larger, a thrust force acts on the hub member 105 and the hub member 105 is pressed and moved to the side wall member 113 side. You.
また、ハブ部材の左右両端面の受圧面積が等しい場合
でも、何らかの力が作用することによってハブ部材が左
右軸方向に移動することがある。Further, even when the left and right end faces of the hub member have the same pressure receiving area, the hub member may move in the left-right axis direction due to the application of some force.
ところが、上記従来のビスカスカップリング装置にあ
っては、ハブ部材105の他端部に段差部117を有する小径
部119を形成し、この小径部119をケース103側の側壁部
材113の内周に嵌合していたため、例えばハブ部材105に
スラスト力が作用して側壁部材113側に移動すると、ハ
ブ部材103の段差部117が側壁部材113内壁に接触して軸
方向の移動が規制され両者が摺動回転することになる。However, in the above-described conventional viscous coupling device, a small-diameter portion 119 having a step portion 117 is formed at the other end of the hub member 105, and this small-diameter portion 119 is formed on the inner periphery of the side wall member 113 on the case 103 side. For example, when the thrust force acts on the hub member 105 and moves toward the side wall member 113, the step portion 117 of the hub member 103 comes into contact with the inner wall of the side wall member 113 so that the axial movement is restricted and It will slide and rotate.
この両者の摺動回転に伴って摩擦熱が発生して粘性流
体の温度がさらに上昇すると共に、両者が摩耗して生じ
る鉄粉等の異物が粘性流体内に混入され、これらによっ
て粘性流体が増粘されるため、粘性流体の粘性特性が変
化を起し適正な伝達トルク特性を得られなくなる。Friction heat is generated by the sliding rotation of the two, and the temperature of the viscous fluid further rises, and foreign substances such as iron powder generated by the abrasion of the two are mixed into the viscous fluid, thereby increasing the viscous fluid. Since the viscous fluid is viscous, the viscosity characteristics of the viscous fluid change, making it impossible to obtain proper transmission torque characteristics.
そこでこの考案は、粘性流体の増粘等を抑制すること
により、粘性流体を適正な粘性特性域で使用することが
でき、所定の伝達トルク特性を保持することができるビ
スカスカップリング装置の提供を目的とする。Therefore, the present invention provides a viscous coupling device that can use a viscous fluid in an appropriate viscosity characteristic range by suppressing a viscosity increase of the viscous fluid and maintain a predetermined transmission torque characteristic. Aim.
［考案の構成］ （課題を解決するための手段） 上記目的を達成するためにこの考案は、筒状のケース
と、このケース内に同心状に相対回転可能に配設された
ハブ部材と、前記ケースとハブ部材との間に形成され粘
性流体を封入した密閉状の環状作動室と、この作動室内
において前記ケースとハブ部材とにそれぞれ回転方向に
係合して交互に軸方向に配設された複数の抵抗板とを備
えてなるビスカスカップリング装置において、前記ケー
スとハブ部材との間の両側の軸支部に前記作動室を密封
するシール部材を設け、前記作動室に臨むハブ部材両端
面の受圧面積の相違に基づく差圧によりケースとハブ部
材が軸方向に間隙a1を介して相対移動するとき、その移
動を前記間隙a1より小さい間隙a2によって規制する当り
部を受圧面積の小さい側のシール部材の外側に設ける構
成とした。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a cylindrical case, a hub member concentrically disposed in the case so as to be relatively rotatable, and A hermetically sealed annular working chamber formed between the case and the hub member and filled with a viscous fluid, and alternately axially disposed in the working chamber so as to engage with the case and the hub member in the rotational direction, respectively; A sealing member for sealing the working chamber at both axial support portions between the case and the hub member, and both ends of the hub member facing the working chamber. when the case and the hub member by the pressure difference due to the difference of pressure receiving area of the surface is relatively moved through the gap a 1 in the axial direction, the pressure receiving area of the contact portion for regulating the movement by the gap a 1 is smaller than the gap a 2 On the small side of It has a configuration provided on the outside of the seal member.
（作用） 上記構成によれば、ハブ部材が軸方向に移動した場
合、この移動は当り部によって規制される。(Operation) According to the above configuration, when the hub member moves in the axial direction, this movement is regulated by the contact portion.
この当り部は、作動室を密封するシール部材の外側に
設けられているため、粘性流体の発熱が抑制され、ま
た、作動室内の粘性流体に鉄粉等の異物が混入されるこ
とがない。Since the contact portion is provided outside the seal member that seals the working chamber, heat generation of the viscous fluid is suppressed, and foreign matter such as iron powder is not mixed into the viscous fluid in the working chamber.
（実施例） 以下、この考案の実施例を図面に基づいて説明する。(Example) Hereinafter, an example of this invention is described based on a drawing.
第１図はこの考案の一実施例に係るビスカスカップリ
ング装置の縦断面図、第２図はこの考案に係るビスカス
カップリング装置を適用した四輪駆動装置全体を示す図
である。FIG. 1 is a longitudinal sectional view of a viscous coupling device according to an embodiment of the present invention, and FIG. 2 is a view showing an entire four-wheel drive device to which the viscous coupling device according to the present invention is applied.
第２図に示すように、エンジン１およびトランスミッ
ション３が車両の前部に横置きに配置されている。トラ
ンスミッション３からの出力はトランスファ５を介して
一方では左右の前輪７に伝達され、他方ではビスカスカ
ップリング装置９およびプロペラシャフト11を介してフ
ァイナルドライブユニット13に伝達される。さらに、フ
ァイナルドライブユニット13から左右の後輪15に駆動力
が伝達される。As shown in FIG. 2, the engine 1 and the transmission 3 are arranged horizontally at the front of the vehicle. The output from the transmission 3 is transmitted to the left and right front wheels 7 via the transfer 5 on the one hand, and to the final drive unit 13 via the viscous coupling device 9 and the propeller shaft 11 on the other hand. Further, the driving force is transmitted from the final drive unit 13 to the left and right rear wheels 15.
前記ビスカスカップリング装置９は、入力軸と出力軸
との間にわずかな回転数差が生じた場合にわずかなトル
クを伝達するという特性を有し、大きな回転数差に対し
て極めて大きなトルクを伝達するという機能を有してい
る。The viscous coupling device 9 has a characteristic of transmitting a small torque when a small rotation speed difference occurs between the input shaft and the output shaft, and provides an extremely large torque for a large rotation speed difference. It has the function of transmitting.
このビスカスカップリング装置９は、第１図に示すよ
うに、トランスファ５から回転入力を受けるシャフト17
にケース19が連結されている。As shown in FIG. 1, the viscous coupling device 9 includes a shaft 17 that receives a rotation input from the transfer 5.
Is connected to the case 19.
ケース19は筒状の外筒21と、この外筒21の両端に結合
された側壁部材23,25とで構成されており、前記シャフ
ト17は側壁部材23側に連結されている。The case 19 is composed of a cylindrical outer cylinder 21 and side wall members 23, 25 connected to both ends of the outer cylinder 21. The shaft 17 is connected to the side wall member 23 side.
側壁部材23にはケース19の内部において軸支部27が形
成され、この軸支部27にハブ部材29が外筒21と同一軸心
上で相対回転自在に嵌合されており、前記ケース19とハ
ブ部材29との間には密閉状に形成された作動室31が設け
られている。A shaft support 27 is formed in the side wall member 23 inside the case 19, and a hub member 29 is fitted to the shaft support 27 so as to be relatively rotatable on the same axis as the outer cylinder 21. A working chamber 31 formed in a sealed state is provided between the member 29 and the member 29.
ハブ部材29の内周には出力軸33が連結され、この出力
軸33には図示しないユニバーサルジョイントが連結さ
れ、さらにプロペラシャフト11が連結されている。An output shaft 33 is connected to the inner periphery of the hub member 29, a universal joint (not shown) is connected to the output shaft 33, and the propeller shaft 11 is further connected.
前記ハブ部材29の一端部は外側に向って順次小径とな
る第１段部35、第２段部37を設けた２段の段差形状に形
成され、ハブ部材29外周と第１段部35との第１の段差部
39および第１段部35と第２段部37との第２段差部41を有
している。一方、側壁部材25には段差部43を有するフラ
ンジ45が一体的に設けられている。そして、ハブ部材29
は第２段部37がフランジ45に遊嵌され、第１段部35が側
壁部材25に対して相対回転自在に嵌合されている。One end of the hub member 29 is formed in a two-step shape having a first step portion 35 and a second step portion 37 having a diameter gradually decreasing toward the outside, and the outer periphery of the hub member 29 and the first step portion 35 are formed. Of the first step
39 and a second step 41 between the first step 35 and the second step 37. On the other hand, a flange 45 having a step 43 is integrally provided on the side wall member 25. Then, the hub member 29
The second step 37 is loosely fitted to the flange 45, and the first step 35 is fitted to the side wall member 25 so as to be relatively rotatable.
前記ハブ部材29の第１段差部39と側壁部材25内壁との
間には間隙a1が設けられ、また、ハブ部材29の第２段差
部41と側壁部材25の段差部43との間にも間隙a2が設けら
れている。この間隙a2は前記間隙a1よりも小さく（a1＞
a2）設定されている。A gap a 1 is provided between the first step 39 of the hub member 29 and the inner wall of the side wall member 25, and between the second step 41 of the hub member 29 and the step 43 of the side wall member 25. gap a 2 is also provided. The gap a 2 is smaller than the gap a 1 (a 1>
a 2 ) It is set.
この実施例では、前記ハブ部材29の第２段差部41と側
壁部材25の段差部43とによって、ハブ部材29の軸方向の
移動を規制する当り部を構成している。In this embodiment, the second step portion 41 of the hub member 29 and the step portion 43 of the side wall member 25 constitute a contact portion for restricting the movement of the hub member 29 in the axial direction.
従って、ハブ部材29にスラスト力が作用した場合のハ
ブ部材29の軸方向への移動は該ハブ部材29の第２段差部
41と側壁部材25の段差部43との摺接により規制され、ハ
ブ部材29の第１段差部39と側壁部材25内壁とは適宜な間
隔が保持される。Therefore, when the thrust force acts on the hub member 29, the movement of the hub member 29 in the axial direction is caused by the second step portion of the hub member 29.
The first step 39 of the hub member 29 and the inner wall of the side wall member 25 are maintained at an appropriate distance by being regulated by the sliding contact between the step 41 and the step 43 of the side wall member 25.
また、この実施例では、作動室31内に臨むハブ部材29
の側壁部材25側の受圧面積F2は、側壁部材23側の受圧面
積F1より小さく（F1＞F2）なっている。In this embodiment, the hub member 29 facing the inside of the working chamber 31 is provided.
Receiving area F 2 of the side wall member 25 side is smaller than the pressure receiving area F 1 of the wall member 23 side (F 1> F 2).
前記側壁部材25にはハブ部材29の第１段部35に対して
シール部材49が設けられており、また、ハブ部材29には
軸支部27に対してシール部材47が設けられている。そし
て、シール部材47,49によって作動室31は密封形成さ
れ、この作動室31にはシリコンオイル等のような粘性流
体が封入されている。The side wall member 25 is provided with a seal member 49 for the first step 35 of the hub member 29, and the hub member 29 is provided with a seal member 47 for the shaft support 27. The working chamber 31 is hermetically sealed by the seal members 47 and 49, and the working chamber 31 is filled with a viscous fluid such as silicone oil.
前記作動室31内には、ケース19の外筒21の内周壁に形
成されたスプライン51で回転方向に係合された複数の抵
抗板53と、ハブ部材29の外周に形成されたスプライン55
で回転方向に係合された複数の抵抗板57とが交互に配設
され、ケース19側の抵抗板53間の所定間隔を保つための
スペーサリング59がハブ部材29側の抵抗板57の外周に接
触しないように各抵抗板53間に挿入されている。In the working chamber 31, a plurality of resistance plates 53 rotationally engaged by splines 51 formed on the inner peripheral wall of the outer cylinder 21 of the case 19, and splines 55 formed on the outer periphery of the hub member 29.
A plurality of resistance plates 57 engaged in the rotational direction are alternately arranged, and a spacer ring 59 for maintaining a predetermined interval between the resistance plates 53 on the case 19 side is provided on the outer periphery of the resistance plate 57 on the hub member 29 side. Are inserted between the resistance plates 53 so as not to contact with.
つぎに、上記一実施例の作用について述べる。 Next, the operation of the embodiment will be described.
エンジン１の駆動力は、トランスミッション３によっ
て所定の変速を行なわれた後、トランスファ５を経て一
方では前輪７に伝達され、また他方ではビスカスカップ
リング装置９、プロペラシャフト11およびファイナルド
ライブユニット13を介して後輪15に伝達される。The driving force of the engine 1 is transmitted to the front wheel 7 via the transfer 5 after a predetermined shift by the transmission 3, and is transmitted via the viscous coupling device 9, the propeller shaft 11 and the final drive unit 13 on the other side. The power is transmitted to the rear wheel 15.
トランスファ５からシャフト17を介してビスカスカッ
プリング装置９のケース19に入力される回転力は、ケー
ス19と一体的に回転する抵抗板53と、作動室31内に封入
された粘性流体の粘性抵抗とから抵抗板57に伝わり、抵
抗板57と一体的に回転するハブ部材29に伝えられ、出力
軸33、ユニバーサルジョイントを介して連結されたプロ
ペラシャフト11に伝達される。The rotational force input from the transfer 5 to the case 19 of the viscous coupling device 9 via the shaft 17 is caused by the resistance plate 53 that rotates integrally with the case 19 and the viscous resistance of the viscous fluid sealed in the working chamber 31. Is transmitted to the resistance plate 57, transmitted to the hub member 29 that rotates integrally with the resistance plate 57, and transmitted to the output shaft 33 and the propeller shaft 11 connected via a universal joint.
ところで、前輪７側と後輪15側とに差動回転が起きた
ときには、抵抗板53,57間の相対回転に伴って粘性流体
の温度が上昇し、作動室31内の内圧も上昇する。この作
動室31内の内圧が高まると、この内圧がハブ部材29のシ
ール部材47,49でシールされた部分の両端部にも作用す
る。そして、ハブ部材29の両端部は、側壁部材25側の受
圧面積F2を側壁部材23側の受圧面積F1よりも小さく（F1
＞F2）設定されているため、受圧面積F1側にかかる全圧
の方が受圧面積F2側にかかる全圧より大きい。このため
ハブ部材29に第１図中矢印ａ方向へのスラスト力が作用
し、ハブ部材29が側壁部材25側へ押圧される。この際、
ハブ部材29の第１段差部39と側壁部材25内壁との間隔a1
はハブ部材29の第２段差部41と側壁部材25の段差部43と
の間隔a2に対して大きく（a1＞a2）形成してあるため、
ハブ部材29の第２段差部41と側壁部材25の段差部43とが
摺接される。By the way, when differential rotation occurs between the front wheel 7 side and the rear wheel 15 side, the temperature of the viscous fluid increases with the relative rotation between the resistance plates 53 and 57, and the internal pressure in the working chamber 31 also increases. When the internal pressure in the working chamber 31 increases, the internal pressure also acts on both ends of the portion of the hub member 29 sealed by the seal members 47 and 49. Then, both end portions of the hub member 29, the pressure receiving area F 2 of the side wall member 25 side smaller than the pressure receiving area F 1 of the wall member 23 side (F 1
> F 2) because it is set, the total pressure is greater than that towards the total pressure applied to the pressure receiving area F 1 side according to the pressure receiving area F 2 side. Therefore, a thrust force in the direction of arrow a in FIG. 1 acts on the hub member 29, and the hub member 29 is pressed toward the side wall member 25. On this occasion,
The distance a 1 between the first step portion 39 of the hub member 29 and the inner wall of the side wall member 25
Since is made larger with respect to the spacing a 2 (a 1> a 2 ) formed between the step portion 43 of the second step portion 41 and the side wall member 25 of the hub member 29,
The second step portion 41 of the hub member 29 and the step portion 43 of the side wall member 25 are in sliding contact with each other.
このため、作動室31内におけるハブ部材29の第１段差
部39と側壁部材25内壁との間隔を保つことができる。作
動室31内におけるハブ部材29と側壁部材25との摺動に伴
う発熱及び鉄粉発生を防止することができると共に粘性
流体内への鉄粉等の異物の混入を防止することができ、
粘性流体の増粘を抑制することができる。Therefore, the space between the first step portion 39 of the hub member 29 and the inner wall of the side wall member 25 in the working chamber 31 can be maintained. It is possible to prevent heat generation and iron powder generation due to sliding between the hub member 29 and the side wall member 25 in the working chamber 31 and to prevent foreign matter such as iron powder from being mixed into the viscous fluid,
Thickening of the viscous fluid can be suppressed.
また、ハブ部材29にかかるスラスト力をシール部材49
よりもケース19の外側で受けるので、ハブ部材29の第２
段差部41と側壁部材25の段差部43との摺動による発熱を
ギヤオイル等の潤滑冷却あるいは大気による空冷によっ
て抑制することができる。Further, the thrust force applied to the hub member 29 is
Rather than on the outside of the case 19,
Heat generated by sliding between the step portion 41 and the step portion 43 of the side wall member 25 can be suppressed by lubricating cooling of gear oil or the like or air cooling by the atmosphere.
［考案の効果］ 以上の説明により明らかなように、この考案の構成に
よれば、作動室内におけるハブ部材とケースとの摺動に
伴う発熱を抑制することができると共に粘性流体への鉄
粉等の異物の混入を防止することができ、粘性流体の増
粘を抑制することができる。従って、粘性流体を適正な
粘性特性域で使用することができ、所定の伝達トルク特
性を保持することができる。[Effects of the Invention] As is apparent from the above description, according to the structure of the present invention, it is possible to suppress heat generation due to sliding between the hub member and the case in the working chamber and to reduce iron powder or the like into a viscous fluid. Foreign matter can be prevented from being mixed, and the increase in viscosity of the viscous fluid can be suppressed. Therefore, the viscous fluid can be used in a proper viscosity characteristic range, and a predetermined transmission torque characteristic can be maintained.
第１図はこの考案の一実施例に係るビスカスカップリン
グ装置の縦断面図、第２図はこの考案に係るビスカスカ
ップリング装置を適用した四輪駆動装置全体を示す図、
第３図は従来例によるビスカスカップリング装置の縦断
面図である。 19……ケース、29……ハブ部材 31……作動室、53,47……抵抗板 47,49……シール部材 41……第２段差部（移動規制手段） 43……段差部FIG. 1 is a longitudinal sectional view of a viscous coupling device according to an embodiment of the present invention, FIG. 2 is a diagram showing an entire four-wheel drive device to which the viscous coupling device according to the present invention is applied,
FIG. 3 is a longitudinal sectional view of a conventional viscous coupling device. 19 Case, 29 Hub member 31 Working chamber 53, 47 Resistance plate 47, 49 Seal member 41 Second step (movement restricting means) 43 Step
Claims (1)
相対回転可能に配設されたハブ部材と、前記ケースとハ
ブ部材との間に形成され粘性流体を封入した密閉状の環
状作動室と、この作動室内において前記ケースとハブ部
材とにそれぞれ回転方向に係合して交互に軸方向に配設
された複数の抵抗板とを備えてなるビスカスカップリン
グ装置において、前記ケースとハブ部材との間の両側の
軸支部に前記作動室を密封するシール部材を設け、前記
作動室に臨むハブ部材両端面の受圧面積の相違に基づく
差圧によりケースとハブ部材が軸方向に間隙a1を介して
相対移動するとき、その移動を前記間隙a1より小さい間
隙a2によって規制する当り部を受圧面積の小さい側のシ
ール部材の外側に設けたことを特徴とするビスカスカッ
プリング装置。1. A cylindrical case, a hub member disposed concentrically and relatively rotatably in the case, and a hermetically sealed annular member formed between the case and the hub member and filled with a viscous fluid. An operating chamber, and a viscous coupling device comprising a plurality of resistance plates alternately arranged in the axial direction while being engaged with the case and the hub member in the operating chamber in the operating chamber, respectively, A seal member for sealing the working chamber is provided on both shaft supports between the hub member and the case and the hub member are axially separated by a differential pressure based on a difference in pressure receiving area between both end faces of the hub member facing the working chamber. when relative movement via a 1, a viscous coupling device, characterized in that a contact portion for regulating the movement by the gap a 1 is smaller than the gap a 2 on the outside of the small side of the sealing member of the pressure receiving area .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989039606U JP2554060Y2 (en) | 1989-04-05 | 1989-04-05 | Viscous coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989039606U JP2554060Y2 (en) | 1989-04-05 | 1989-04-05 | Viscous coupling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02130435U JPH02130435U (en) | 1990-10-26 |
| JP2554060Y2 true JP2554060Y2 (en) | 1997-11-12 |
Family
ID=31548665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989039606U Expired - Fee Related JP2554060Y2 (en) | 1989-04-05 | 1989-04-05 | Viscous coupling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2554060Y2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT383195B (en) * | 1985-07-02 | 1987-05-25 | Steyr Daimler Puch Ag | LIQUID FRICTION COUPLING |
| JPS6227237U (en) * | 1985-08-05 | 1987-02-19 | ||
| JPH0319617Y2 (en) * | 1986-02-05 | 1991-04-25 | ||
| JPH01153824A (en) * | 1987-12-09 | 1989-06-16 | Toyota Motor Corp | Plate of viscus coupling and manufacture thereof |
-
1989
- 1989-04-05 JP JP1989039606U patent/JP2554060Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02130435U (en) | 1990-10-26 |
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