| 摘要 |
A closure cap ( 10 ) is provided with an audible warning when the cap ( 10 ) is removed from a container ( 12 ). The closure cap ( 10 ) preventing the inadvertent consumption of pharmaceutical products, bleaches or other products by children or other minors. In use, the closure cap ( 10 ) may be provided with child resilient means and can be screwed on to any standard container ( 12 ). When the cap ( 10 ) is removed from the container ( 12 ), mechanical energy is expended by the user and such mechanical energy is converted to sufficient electrical energy using a piezoelectrical element ( 14 ) contained in the cap ( 10 ). The electrical energy generated is then conditioned and stored using signal conditioning electronics ( 26 ) such that and alarm signal of sufficient level is sounded. In use, the piezoelectrical element ( 14 ) is interposed between two sprung steel sections ( 16 ) formed as a dome and the action of unscrewing the cap ( 10 ) causes the sprung sections ( 16 ) to snap back producing a large dynamic force on said piezoelectrical element ( 14 ) which produces a large voltage output.
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