To achieve steering stability and riding quality.SOLUTION: A tire rigidity variable device includes: a rigidity variable member 60 disposed on an under tread 42 of a pneumatic tire 1 including a tread part 2 in which a cap tread 41, an external layer, which has a tread ground contact surface 3 and an under tread 42, an internal layer, which is located at the inner side of the cap tread 41 in a tire radial direction, are laminated; and a control unit 70 which provides energy to the rigidity variable member 60 to change rigidity of the rigidity variable member 60. The rigidity variable member 60 is made of a magnetic elastomer and the control unit 70 changes rigidity of the rigidity variable member 60 based on predetermined sensor output information.SELECTED DRAWING: Figure 4

    【課題】操縦安定性と乗り心地とを両立すること。【解決手段】トレッド接地面3を有する外部層であるキャップトレッド41とキャップトレッド41のタイヤ径方向内側に位置する内部層であるアンダートレッド42とが積層されるトレッド部2を備える空気入りタイヤ1のアンダートレッド42に配置される剛性可変部材60と、剛性可変部材60に対してエネルギーを付与することにより剛性可変部材60の剛性を変化させる制御部70と、を備え、剛性可変部材60は、磁性エラストマーからなり、制御部70は、所定のセンサ出力情報に基づいて剛性可変部材60の剛性を変化させる。【選択図】図4


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    Title :

    TIRE RIGIDITY VARIABLE DEVICE AND TIRE


    Additional title:

    タイヤ剛性可変装置及びタイヤ


    Contributors:

    Publication date :

    2021-10-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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