A shaft coupling that allows the angle at which two rotating shafts intersect to be freely changed within a certain range. (1) Non-constant velocity universal joint Also known as a Hooke's joint or Cardan type (shaft) joint. The ends of the shaft are forked, and two such joints with a cross metal fitting between them are used, ensuring a constant velocity via an intermediate shaft. (2) Constant velocity universal joint A typical example is the Bendix type (shaft) joint, which uses a four-ball mechanism. It results in constant velocity motion and no change in rotational force, but a bending load acts on the shaft. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
回転する2軸の交わる角度をある範囲内で自由に変えられる軸継手。 (1) 不等速型自在継手 フック継手またはカルダン型 (軸) 継手と呼ばれるものがある。軸の端部を二叉にして,その間に十字形金具を入れた構造のものを2個用い,中間軸を介して等速になるようにする。 (2) 等速型自在継手 4個のボール機構を用いたベンディクス型 (軸) 継手が代表例。等速運動になり,回転力も変化しないが,軸には曲げ荷重が働く。
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