| 摘要 |
In an apparatus that includes a head (20), spindle (28), and a handle (16), the handle is rotatably fastened to the head by the spindle. The handle and head mate at an interface. The apparatus further includes a head axial bore (26A) offset from the spindle and configured to occupy a portion of the head and a handle axial bore (26B) offset from the spindle and configured to occupy a portion of the handle, the handle axial bore being configured to receive a torque limiting insert (40), wherein in response to the head being at a first rotational conformation relative to the handle, the head axial bore and handle axial bore is disposed in cooperative alignment to allow the torque limiting insert to transect the interface and enter the head axial bore. The head and the handle are rotationally coupled via the torque limiting insert. The head and the handle are rotationally uncoupled in response to a shear force being applied across the interface that exceeds a shear limit for the torque limiting insert. |
