JP3091022U - fuse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuse which is particularly easy to assemble and has excellent durability. A conductive cap (20) is provided on both sides of an insulating body (10), and a fusible alloy body (3) is provided between two conductive caps (20).
0 is fixed, and the surroundings of the insulating body 10 and the fusible alloy body 30 are covered with the covering body 40 by a mounting method.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to a fuse that is particularly easy to assemble and has excellent durability. It is a thing.

[0002]

[Prior art]

  In order to prevent the influence of abnormal current (overcurrent) on electronic components, it is usually a circuit board. A fuse is attached to the power input terminal of. Also currently used such As shown in FIG. 4, the fuse has a hollow tubular body 50 sealed on both sides, The fusible alloy body 60 is provided so as to penetrate in the longitudinal direction of the tubular body 50, and the resin layer 6 is provided around the fusible alloy body 60. 2 is further covered, and further, both ends of the resin layer 62 are covered with metal caps 63. Rises that extend from the metal caps 63 at both ends of the molten alloy body 60 and are connected to the circuit board. In this structure, the lead wire 61 is provided.

[0003]

[Problems to be solved by the device]

  However, the existing fuse has an extremely large amount of residual gas in the hollow tube 50. Then, when the fusible alloy body 60 is heated by an electric current, the gas molecules around the fusible alloy body 60 Movement is accelerated and it is easy to burst. Therefore, in view of the above problems, oil or oil A fuse filled with sand or silica was developed. However, this type of fuse also needs to prevent oil or silica sand from flowing out during the manufacturing process. Therefore, there is a drawback that the process becomes more complicated and the manufacturing cost increases. It

[0004]

[Means for Solving the Problems]

  The fuse according to the present invention has a non-conducting insulating body 10. The conductive caps 20 are attached to the respective sides, and two conductive caps 20 are provided. The fusible alloy body 30 is fixed between the insulating main body 10 and the fusible alloy body 30. The coating 40 is coated by a mounting method.

[0005]

[Action]

  The present invention solves the above problems and has a non-conductive insulating body, Two conductive caps are installed on both sides of the main unit. A fusible alloy body is fixed between the insulating body and the surroundings of the fusible alloy body with a cover. Since it is covered, the fusible alloy body is made to pass through by reducing the gas in the coating body to a very small level. It is possible to prevent the fuse from bursting when it is heated by an electric current.

[0006]

[Embodiment of device]

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.   FIG. 1 is a plan sectional view showing an assembled state of a fuse according to the present invention, and FIG. FIG. 3 is an exploded plan sectional view of a fuse according to the present invention, and FIG. FIG. 7 is a plan sectional view showing another embodiment of the invention.

[0007]   As shown in FIG. 1, the fuse 1 of the present invention comprises a non-conductive insulating body 10 and an insulating book. Conductive caps 20 attached to both sides of the body 10, and two conductive caps A fusible alloy body 30 fixed by soldering and welding between the insulating body 20 and the insulating body 10. In the mounting method between the two conductive caps 20 in the periphery of the and the fusible alloy body 30. And the covering body 40 that is covered with the covering body 40. By doing so, the gas in the covering 40 can be extremely reduced, It is possible to prevent the burst of the laser.

[0008]   Further, as shown in FIG. 2, the insulating body 10 is made of a non-conductive ceramic. In addition, the conductive cap 20 is made of copper and has the required rod-like shape. By forming a fitting groove 21 corresponding to the end face of the insulating main body 10 in the center Both sides of the body 10 are fitted into the conductive caps 20, and the two conductive caps 20 There is a certain distance between them. Also, it is installed between the two conductive caps 20. The fusible alloy body 30 is disposed on one side of the insulating body 10, and both ends of the fusible alloy body 30 are connected to the conductive cap. It is fitted into the fitting groove 21 of the cap 20 and is subjected to the solder welding process for the conductive cap. It is fixed on the top 20.

[0009]   FIG. 3 shows another embodiment of the present invention, in which the fusible alloy body 30 is completely insulated. The fusible alloy body 30 and the insulating body 1 are spirally wound around the outer peripheral surface of the rim body 10. Both ends of 0 are both fitted into the fitting groove 21 of the conductive cap 20, and A cover 40 is provided outside the insulating body 10 and between the two conductive caps 20. It is a composition. Further, the insulating main body 10 is made of a magnetic material to form a wave filter. Noise may be prevented by providing an effect.

[0010]   The fuse shown in FIGS. 1 to 3 described above is an embodiment of the present invention. It goes without saying that any form may be adopted as long as it is within the range shown in the detailed document. Absent.

[0011]

[Effect of device]

  Since the present invention has the above configuration, the following effects can be achieved.   The fuse of the present invention has an internal structure by covering the cover with a mounting method. It is possible to prevent the fuse from bursting because the amount of the gas can be made extremely small.   The fuse of the present invention consists of an insulating body and a fusible alloy body between two conductive caps. Since it is only necessary to fit the No need to fill oil or silica sand, and it is very easy to manufacture.

[Brief description of drawings]

FIG. 1 is a plan sectional view showing an assembled state of a fuse according to the present invention.

FIG. 2 is an exploded plan sectional view of a fuse according to the present invention.

FIG. 3 is a sectional plan view showing another embodiment of the fuse according to the present invention.

FIG. 4 is a plan sectional view of a conventional fuse.

[Explanation of symbols]

1 fuse 10 Insulation body 20 Conductive cap 21 Mating groove 30 soluble alloy body 40 Cover 50 tube 60 soluble alloy body 61 lead wire 62 resin layer 63 metal cap

Claims (3)

[Scope of utility model registration request] 1. A non-conductive insulating body (10) is provided, conductive caps (20) are attached to both sides of the insulating body (10), and the fusible alloy body (3) is provided between the two conductive caps (20).
0 is fixed, and the insulating body 10 and the fusible alloy body 30 are covered with a covering body 40 by a mounting method. 2. The fusible alloy body 30 is disposed on one side of the insulating body 10, and both ends of the fusible alloy body 30 and the insulating body 10 are incorporated in the conductive cap 20. The fuse described in. 3. The fuse according to claim 1, wherein the fusible alloy body 30 is spirally wound around the outer peripheral surface of the insulating body 10, and the insulating body 10 is a magnetic body.