| 摘要 |
An acceleration and deceleration sensor includes a housing; first and second elongate cavities formed in the housing and extending parallel to one another; a reed switch disposed in the first cavity; a first elongate permanent magnet immovably secured in the second cavity; and a second elongate permanent magnet longitudinally slidably received in the second cavity and arranged end-to-end relative to the first magnet. The reed switch and the second magnet are arranged with respect to one another such that upon movement of the second magnet the magnetic field thereof actuates the reed switch. The sensor further has a lid cooperating with the first cavity and has a closed and an open position. In the closed position the lid covers the first cavity and is supported on the housing and in the open position the first cavity is exposed to environment external to the housing. The lid is arranged for movement from the closed position to the open position in a direction transverse to the length dimension of the elongate first cavity. There is further provided an adjustment screw closing an end of the second cavity.
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