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SELF-ENERGY SWITCH

Abstract(summary):

A self-energy switch, comprising an electromagnetic transducer (40), a circuit board (50) and a housing (60). The electromagnetic transducer (40) comprises a wire package (12), two permanent magnets and a soft magnet (8), wherein the wire package (12) winds around the soft magnet (8). The two permanent magnets can be movably arranged relative to each other at two sides of the soft magnet (8), and polarity directions of the two permanent magnets are consistent. The circuit board (50) is electrically connected to the electromagnetic transducer (40), the housing (60) coats the electromagnetic transducer (40) and the circuit board (50), the housing (60) has two elastic elements (6), and the two elastic elements (6) are respectively arranged at two ends of the electromagnetic transducer (40). When the relative movement of the two permanent magnets and the soft magnet (8) reaches a first position, a magnetic loop is formed between the two permanent magnets and the soft magnet (8), and the direction of the magnetic loop is from one of the permanent magnets to the other permanent magnet through the soft magnet (8). When the relative movement of the two permanent magnets and the soft magnet (8) reaches a second position, the direction of the magnetic loop changes.


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