The utility model relates to a simple collision double insurance fuse, one end of battery is connected with the clip switch of installation in the outside of shell through the wire, one side of shell is equipped with insulating sleeve, the inside installation of insulating sleeve is connected with the striker through the wire of clip switch, the outer end of striker extends to the outside of insulating sleeve, the outside of insulating sleeve is equipped with the coil of cooperation with striker, and the protective sleeve is arranged between the coil and insulating sleeve, the outer end of protective sleeve extends to the outside of the end of striker, and the other end of battery is connected with the coil through the wire, not by structure limit, increased the use range of product, guarantee safety through double insurance mode, avoid the occurrence of accidental incident, not easy to fail and be counteracted, is suitable for large -scale production and use.