PROBLEM TO BE SOLVED: To provide a torque transmission device of a four-wheel drive vehicle capable of transmitting torque to sub-drive wheels with appropriate torque distribution according to a travel state of the vehicle through a simple configuration.SOLUTION: A viscous coupling (10) arranged between an engine (3) and sub-drive wheels (W3 and W4) on a drive force transmission path (2) is configured to change torque transmission characteristics in accordance with changes in clearances between a plurality of outer plates (13) and a plurality of inner plates (14) with an inerter member (25) having inertia mass moved in an axial direction by an effect of inertial force on a vehicle. Thus, the viscous coupling (10), which has a simple configuration with the number of components reduced, can temporarily increase torque transmitted therethrough when the vehicle is in a state, such as traveling on a climbing lane, requiring driving force of the sub-drive wheels (W3 and W4) without relying on electronic control or manual operation.SELECTED DRAWING: Figure 2

    【課題】簡単な構成で、車両の走行状態に応じて適切な配分での副駆動輪へのトルク伝達が可能となる四輪駆動車両のトルク伝達装置を提供する。【解決手段】駆動力伝達経路(2)におけるエンジン(3)と副駆動輪(W3,W4)との間に配置されたビスカスカップリング(10)であって、慣性質量を有するイナータ部材(25)が車両への慣性力の作用で軸線方向に移動することで、複数のアウタープレート(13)と複数のインナープレート(14)との間のクリアランスが変化し、伝達トルク特性が変化するように構成した。これにより、部品点数を少なく抑えた簡単な構成で、かつ電子制御や手動操作などを行うことなく、登坂路の走行など副駆動輪(W3、W4)の駆動力を必要とする状況において、ビスカスカップリング(10)の伝達トルクを一時的に上昇させることが可能となる。【選択図】図2


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    Title :

    TORQUE TRANSMISSION DEVICE OF FOUR-WHEEL DRIVE VEHICLE


    Additional title:

    四輪駆動車両のトルク伝達装置


    Contributors:

    Publication date :

    2016-03-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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