DIFFERENTIAL DEVICE WITH DIFFERENTIAL ACTION RESTRICTION FUNCTION

PROBLEM TO BE SOLVED: To provide a limited slip differential (LSD) device in which LSD is not required to be decomposed or its component replacement is not required and further a characteristic of LSD can be changed without dismantling LSD from a vehicle.SOLUTION: This invention relates to a differential device having a differential restriction function in which a pinion shaft comprises a movable tip moved along a shaft part between the first position where a pinion shaft oppositely faces against a cam surface and the second position where the pinion shaft retracts inwardly from the cam surface, the cam surface acting as a cam surface for transmitting a force to the pinion shaft when a pressure ring rotates relatively in one rotating direction has the first cam surface contacted with the movable tip when the movable tip is present at the first position and the second cam surface contacted with the end part of the shaft part when the movable tip is present at the second position, and the differential restriction characteristic changes in the case that the movable tip is present at the first position and in the case that the movable tip is present at the second position. 【課題】ＬＳＤの分解や部品交換が必要なく、さらに車両からＬＳＤを取り外すことなくＬＳＤの特性を変化させることが可能なリミテッドスリップデファレンシャル装置を提供する提供する。【解決手段】前記ピニオンシャフトが、前記カム面と対向する第１の位置と、前記カム面より内側に退避する第２の位置との間を前記シャフト部に沿って移動する可動チップを備え、前記カム面が、前記プレッシャーリングが一方の回転方向に相対的に回転する場合に前記ピニオンシャフトに力を伝達するカム面として、前記第１の位置に前記可動チップがある場合に前記可動チップに接する第１のカム面と、前記可動チップが第２の位置にある場合に前記シャフト部の端部に接する第２のカム面と、を備え、前記可動チップが前記第１の位置にある場合と前記第２の位置にある場合とで差動制限特性が変化することを特徴とする差動制限機能を有するデファレンシャル装置。【選択図】図１