| 摘要 |
<p>A fastening device (10) has: a mounting member (12) attached to a first component (24), a screw-threaded assembly (14,22) rotatable in the mounting member and with a screw-threaded portion (32) for engaging with a screw-threaded portion (30) of a second component (28) to secure the components together; and an actuator member (18) mounted on the screw-threaded assembly. The device has, in itself, a locked state (Figure 1) and an unlocked state (Figure 2). A torque-transmitting arrangement (20,42,66) is arranged such that: when in the unlocked state, torque can be transmitted from the actuator member to the screw-threaded assembly to tighten the screw-threaded portions until a predetermined torque is reached, whereupon the device changes to its locked state; and when in the locked state, the actuator member is rotationally locked to the screw-threaded assembly. A locking arrangement (20,58,68) is arranged such that: when in the unlocked state, the actuator member can be rotated relative to the mounting member; and when in the locked state, the actuator member is rotationally locked to the mounting member.
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