| 摘要 |
<p>A bolt mechanism comprises a tubular channel (20, 30, 32), a bolt (14, 34) slidable within the channel; and a bolt tip (40) that is axially displacable by the bolt (14, 34). The bolt tip (40) is attached to the bolt (14, 34) by a linking rod (35) allowing restricted axial play. The opposed end faces of the bolt (34) and of the bolt tip (40) define a gap that widens in the radial direction, and balls (50) in this gap. The wall of the tubular channel defines a groove (52) at the axial position corresponding to that of each ball (50) when the bolt tip (40) is in the locked position. This ensures that the bolt mechanism is deadlocked, as any effort to push the bolt tip (40) away from the locked position only urges the balls (50) more firmly into the groove (52).</p> |
