PRESSING MECHANISM OF CLUTCH

To provide a pressing mechanism of a clutch capable of more reliably disengaging a clutch, in switching from a four-wheel driving state to a two-wheel driving state.SOLUTION: A pressing mechanism of a clutch is provided with: a first disc member 12 and a second disc member 13 which are coaxially disposed, relatively rotatable and movable in a rotating shaft direction; a first groove 12c formed on a first end face F12 directing the second disc member 13 of the first disc member 12, extending in a circumferential direction, and gradually changing in a depth from the first end face F12; a second groove 13c formed on a second end face F13 directing the first disc member 12 of the second disc member 13, extending in the circumferential direction, and gradually changing in a depth from the second end face F13; a spherical body 14 rolling between the first groove 12c and the second groove 13c; and an energization member 31 locked to the first disc member 12 at one end, locked to the second disc member 13 at the other end, and having energization force in a rotating direction of the rotating shaft.SELECTED DRAWING: Figure 2 【課題】四輪駆動状態から二輪駆動状態に切り替えた際に、クラッチをより確実に締結解除することが可能なクラッチの押圧機構を提供する。【解決手段】同軸上に配置され、相対回転可能、且つ、回転軸方向に移動可能な第１の円板部材１２と第２の円板部材１３と、第１の円板部材１２の第２の円板部材１３に指向する第１の端面Ｆ１２に形成されて、円周方向に延在するとともに、第１の端面Ｆ１２からの深さが徐々に変化する第１の溝１２ｃと、第２の円板部材１３の第１の円板部材１２に指向する第２の端面Ｆ１３に形成されて、円周方向に延在するとともに、第２の端面Ｆ１３からの深さが徐々に変化する第２の溝１３ｃと、第１の溝１２ｃと第２の溝１３ｃの間を転動する球体１４と、第１の円板部材１２に一端を係止され、他端を第２の円板部材１３に係止され、回転軸の回転方向に付勢力を有する付勢部材３１と、をクラッチの押圧機構に設ける。【選択図】図２