| 摘要 |
A shaft (1) has a spline groove (4) having sidewalls (5), and a surrounding rotary member (6) has a complementary tooth (7) in sliding engagement within the groove (4), such that it is slidable between a first position (shown in hard lines) and a second position (shown in broken lines) when it is not rotating. The groove sidewall (5) is provided with a projecting portion (42) which prevents the tooth (7) from sliding axially between the first and second positions while tangential forces (16, 17) are being exerted during transmission of torque between the shaft and member (6). When torque is no longer applied, tooth (7) becomes free to ride up and over the projection (42) in axial movement along the shaft. <IMAGE> |
