| 摘要 |
A sensor and trigger mechanism includes a pressure vessel containing fluid under pressure and having an outlet secured to a cylindrical support and sealed by a rupturable diaphragm. An axial guide pin on the support slidably mounts a headed penetrator pin. The head of the penetrator pin and the support seat the ends of a hollow frangible glass cylinder. A compression spring seating between the support and the head of the penetrator pin biases the pin toward the diaphragm. A ball of predetermined weight is seated on a pedestal and held against movement by a spring biased lever engaging the ball diametrically opposite the seat. A torsion spring is mounted on the support and includes a swingable U-shaped lever arm. The head of a fragmentor pin is slotted and receives the bight portion of the lever arm to pivotally and slidably mount the fragmentor pin on the lever arm. A pair of extensions of the lever engage the bight portion of the lever arm to either side of the head of the fragmentor pin to detent the lever arm of the torsion spring and also slidably locate the fragmentor pin on the bight portion of such arm to align the fragmentor pin with a guide on the support. When the ball moves off the seat under an acceleration pulse of predetermined amplitude and time, the lever releases the lever arm and the torsion spring drives the fragmentor pin into engagement with the glass cylinder to fragmentize such cylinder and release the penetrator pin to initiate rupture of the diaphragm.
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