TWM584014U - fuse - Google Patents

Abstract

The fuse of the present invention comprises: a tube body having a first cap body at both ends thereof, each of the first cap bodies being provided with a through hole; and a fuse unit comprising a first fuse disposed in the tube body a wire, and both ends of the first fuse extend outward from each of the through holes; and a plurality of second caps, one side of each of the second caps has a recess, and the other mask has a wire for each of the second The concave portion of the cap body is respectively coupled with the outer side of each of the first cap bodies, and the two ends of the first fuse are coupled between each of the first cap bodies and each of the second cap bodies, thereby extending the first The distance between the ends of the fuse prevents arcing after the first fuse is blown.

Description

fuse

The present invention relates to a circuit protection component, and more particularly to an active heating fuse.

Fuses are widely used in electronics and motor products to protect products from excessive currents. The principle that a fuse can protect a product is when a current flows through a conductive fuse with a suitable impedance. When the current exceeds the rated current, the fuse is blown by overheating, thereby isolating the current from entering the product. The higher the impedance after the burn, the better the insulation effect. Generally, the larger the cross-sectional area of the fuse, the lower the impedance and the higher the rated current. The fuse is connected in series with the protected circuit. When used within the rated current range, the voltage drop and temperature rise are as low as possible. The fuse is heated by excessive current, which generates an arc before it is completely blown. It is an instantaneous and local high energy, and has a strong destructive force. It is an important factor that must be considered in the design and manufacture of the fuse.

In addition, another disadvantage of the conventional fuse is that the soldering points at both ends of the fuse are too close, and even after the fuse is blown, the arc effect is generated at the solder joints at both ends, and the protective effect is lost.

In view of this, how to eliminate the above-mentioned deficiencies is the technical difficulty point that the creators of this case want to solve; however, the creators of this case are based on years of experience in relevant industries, and after many years of painstaking research, trial improvement, finally Successfully developed and completed the case, and enabled the new model to be born to enhance the efficacy.

In view of the above disadvantages, the fuse of the present invention comprises: a tube body having a first cap body at both ends thereof, each of the first cap bodies being provided with a through hole; and a fuse unit comprising a plurality of fuse units a first fuse in the tube body, wherein both ends of the first fuse extend outward from each of the through holes; and a plurality of second caps, one side of each of the second caps has a recess and the other mask has a lead The recesses of the second caps are respectively coupled to the outer sides of the first caps, and the two ends of the first fuses are coupled between the first caps and the second caps. Thereby, the distance between the two ends of the first fuse is extended to avoid arcing after the first fuse is blown.

In order to facilitate the description of the contents of the present invention and the achievable functions, a specific embodiment will be described with reference to the drawings. Referring to the first figure, the first embodiment of the present invention, the novel fuse includes: a tube body 10, A fuse unit 20 and a plurality of second cap bodies 30 are described as follows:

The tube body 10 is provided with a first cap body 11 at each end thereof, and each of the first cap bodies 11 is provided with a through hole 111, wherein the tube body 10 is a hollow cylinder or a hollow rectangular parallelepiped.

Referring to the first and second figures, the fuse unit 20 includes a first fuse 21 disposed in the tube body 10, and both ends of the first fuse 21 are outwardly outward of the through holes 111. extend.

The second cap 30 has a recess 31 on one side of each of the second caps 30, and a wire 32 in the other mask. Further, the second cap 30 not provided with the wires 32 can also be used as needed.

The concave portions 31 of the second cap bodies 30 are respectively coupled to the outer sides of the first cap bodies 11 , and the two ends of the first fuses 21 are coupled to the first cap bodies 11 and the second caps. Between the bodies 30 to extend the distance between the ends of the first fuse.

Each of the first cap body 11 , the two ends of the first fuse 21 and each of the second cap bodies 30 are welded and combined, and the first cap body 11 and each of the solder joints are located outside the tube body 10 . Between the second caps 30, it is called "external welding", so that the distance between the two ends of the first fuse 21 is extended, and when the first fuse 21 is blown in use, the arc phenomenon can be effectively avoided. It is impossible to completely break the road.

Please refer to the third embodiment, which is a second embodiment of the present invention. Since some of the components are the same as those of the first embodiment, the same portions will not be described again.

In this embodiment, the fuse unit 20 includes a first fuse 21 and a second fuse 22 coupled to the first fuse 21, and the first fuse 21 has a melting point smaller than the second fuse 22, The first fuse 21 and the second fuse 22 are disposed in the tube body 10, and one ends of the first fuse 21 and the second fuse 22 extend outward from the through holes 111.

Another advantage of the present invention is that the first fuse 21 and the second fuse 22 of different melting points can be matched for protection purposes according to the use requirement. In addition, please refer to the fourth figure, the first fuse 21 and the first A second fuse 23 is further disposed between the two fuses 22, the second fuse 22 has a melting point smaller than the third fuse 23, and the first fuse 21, the second fuse 22, and the third fuse 23 can It is a wire, spring or sheet fuse.

Please refer to the fifth figure for a perspective view of a fourth embodiment of the present invention. The fourth embodiment is modified from a cylindrical shape to a rectangular parallelepiped, and each of the second cap bodies 30 is not provided with a wire 32 for use in another specification. In the circuit.

The detailed description above is a detailed description of one of the possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and equivalent implementations or modifications that are not departing from the spirit of the present invention should be included in the present invention. In the scope of patents.

10‧‧‧ tube body  11‧‧‧ first hat  111‧‧‧through hole  20‧‧‧Fuse unit  21‧‧‧First fuse  22‧‧‧second fuse  23‧‧‧ Third fuse  30‧‧‧second cap  31‧‧‧ recess  32‧‧‧Wire  

The first figure is a perspective view of the first embodiment of the present invention.  The second figure continues the cross-sectional view of the first figure.  The third figure is a cross-sectional view of a second embodiment of the present invention.  The fourth figure is a cross-sectional view of a third embodiment of the present invention.  The fifth figure is a perspective view of the fourth embodiment of the present invention.  

Claims (7)

A fuse comprising:
a tube body having a first cap body at each end thereof, and each of the first cap bodies is provided with a through hole;
a fuse unit includes a first fuse disposed in the tube body, and two ends of the first fuse extend outward from each of the through holes; and a plurality of second caps, each of the second caps One side has a concave portion, and the other mask has a wire, and the concave portions of each of the second cap bodies are respectively coupled with the outer sides of the first cap bodies, and the two ends of the first fuse are coupled to the first caps Between the body and each of the second caps to extend the distance between the ends of the first fuse. The fuse of claim 1, wherein the tube body is a hollow cylinder or a hollow rectangular parallelepiped. The fuse of claim 1, wherein each of the first cap body, the two ends of the first fuse, and each of the second cap systems are welded. A fuse comprising:
a tube body having a first cap body at each end thereof, and each of the first cap bodies is provided with a through hole;
a fuse unit comprising a first fuse and a second fuse coupled to the first fuse, the first fuse having a melting point smaller than the second fuse, the first fuse and the second fuse a wire is disposed in the tube body, and one end of the first fuse and the second fuse extends outward from each of the through holes; and a plurality of second caps each having a recess on one side thereof The other mask has a wire, and the concave portion of each of the second cap bodies is respectively coupled with the outer side of each of the first cap bodies, and the first fuse and one end of the second fuse are coupled to each of the first cap bodies. Between each of the second caps. The fuse of claim 4, wherein a third fuse is further disposed between the first fuse and the second fuse, and the second fuse has a melting point smaller than the third fuse. The fuse of claim 4, wherein the tube body is a hollow cylinder or a hollow rectangular parallelepiped. The fuse of claim 4, wherein each of the first cap body, the two ends of the first fuse, and each of the second cap systems are welded.