Patent ID: 7339486

Claim:
An insertion type fuse with breakage indication comprising: a seat having a long receiving chamber; a middle section of the long receiving chamber being wider and two ends of the long receiving chamber being narrow; two opposite sides of the seat being two protecting plates; each protecting plate having a rectangular ear at an upper middle section thereof; another two opposite sides of the seat being formed with Y shape protruding sheets; a U shape isolating plate clamping the two protecting plates and running across an opening of the long receiving chamber; a metal fuse received in the seat and including two larger sheets and a meltable line for connecting the two sheets; a tenon being formed at each of the connections of the larger sheet and the meltable line; wherein in assembly, the metal fuse being received within the long receiving chamber and are spaced by the isolating plate so that the two tenons clamps the two sides of the isolating plate; an upper edge of each larger sheet is chamfered to have an inclined edge; a lowest edge of each inclined surface being formed with a transversally protruded buckle portion; each buckle portion having an upward extended nose; an outer side of each larger sheet is formed with outer chamfered surfaces and; a rectangular bi-directional SMD form LED set being located on the buckle portions; the LED set being a coating device and being high temperature tolerant; the LED set being connected to a circuit; the LED including two LEDs and being serially connected with a voltage divided resistor; a fuse wire being connected between the LED set and a load; the LED set being buckled to the buckle portions; when the fuse wire breaks, light will emit out so as to show that the fuse wire breaks; thereby a break fuse can be fined rapidly; and a cover covering upon the seat; the cover having two symmetrical grooves so that the upper ends of the larger sheets of the metal fuse passing through openings of the groove, respectively; a middle section of the lower side of the cover being formed with a long slot for receiving the two rectangular ears; two sides of the slot being formed with two tenons, respectively; each tenon being formed with three edges so that the upper cover can be tightly closed; wherein if one end of the circuit is connected to the positive side, one LED will conduct and light up as the fuse wire breaks; if another end of the circuit is connected to the positive side, another LED will conduct and light up as the fuse wire breaks; and wherein the seat and the cover are integrally formed; the LED set is adhered to the metal fuse and then the metal fuse is assembled into the long receiving chamber.