TWI483278B - Metal high voltage fuse structure and its manufacturing method - Google Patents

Description

Metal common high voltage fuse structure and manufacturing method thereof

The invention provides a metal common high voltage fuse structure and a manufacturing method thereof, in particular to a fuse link portion, wherein the two ends of the metal joints corresponding to the front faces of the two electrode ends are connected in common and the electrical connection is effectively stabilized.

According to the traditional fuses, the fuses are generally used in electronic products. The passing current through the fuses is too large, and the melting part is blown to avoid the danger of overheating and ignition of the circuit. The purpose is to protect people and equipment from damage due to overcurrent, or even fire. .

Furthermore, with the current electrical equipment being light and thin, the functions are more and more complicated, more and more parts are needed, and the circuit and electronic components on the circuit board are becoming more and more dense, so the circuit of the circuit board tends to be fine, electronic The micro-production of components is a normal use method, which can make the parts of the circuit board more dense, so that more functions can be placed on the same area of the printed circuit board. However, the general fuse manufacturing method uses electricity or printing manufacturing. The method has no good control length positioning design, or the thickness control is not easy, so that it forms an unstable protection function, so the product stability is poor, the manufacturing difficulty is high, the waste material is used, and the production defect rate is high.

Moreover, in general electronic circuits, components are placed on one side of the circuit board, and the fuses are adhered to each other by the surface. The processing of the solder joints allows the fuse to be melted and the small metal is prone to high temperature diffusion due to the appearance. Normally, it is not easy to check the small deviation of the internal melting part, and the improper impedance increase will easily burn out without reaching the critical value, resulting in the shortening of the life of the wafer fuse and the easy burning, so that the maximum is greater than the normal rating. The use of current through, so that it can not determine the normal rated maximum operating current, and the expensive equipment damage, burnout, injury or dangerous accidents, etc., so the protection is not complete, can not meet the market demand.

Therefore, the prior art summary has the following disadvantages:

1. Conventional technology fuse, no good length positioning design, or thickness control is not easy, production Product stability is not good, manufacturing costs are high, waste materials are used, and production failure rate is high.

2. The fuse of the prior art is prone to local high temperature during the processing of solder joints, resulting in a fuse melting section, which is prone to high temperature diffusion of small metals, incomplete protection, and cannot meet market demands.

3. The fuse of the prior art is prone to an improper increase in impedance, and burns without reaching a critical value, resulting in a shortened life of the chip fuse and easy to burn, and the normal rated maximum use current cannot be determined, and the protection circuit is Safety, damage to expensive equipment, burnout, injury or dangerous accidents.

4. Conventional technology, when a small metal is diffused at a high temperature, it is difficult to detect the problem of internal loss due to the normal appearance.

Therefore, how to eliminate the above-mentioned defects is the technical difficulty point that the inventor of the case wants to solve.

In view of the above-mentioned conventional problems, the inventor of the present invention, based on years of experience in designing related products, has deliberately studied to make the metal connection of the fuse link at the end of the two electrodes, so that the resistance value and the fuse characteristic are fixed; therefore, the object of the present invention The invention provides a metal-connected high-voltage fuse structure and a manufacturing method thereof, in particular to a fuse link portion, wherein the two ends of the metal are respectively connected to the metal common contacts corresponding to the front faces of the two electrode ends, and the electrical connections are effectively stabilized.

Another object of the present invention is to provide a fixed length of a fuse link portion, which fixes a resistance value and a fuse characteristic, and which has a high yield, high quality, and high safety.

In order to achieve the objects of the present invention, and in accordance with the embodiments as embodied and described in the present invention, as well as other advantages, the present invention provides a metal-connected high-voltage fuse structure and a method of fabricating the same, in which the technical solution comprises the following steps: (A) Providing a substrate, and two electrode ends are disposed on two sides of the substrate, respectively, are disposed on the base The two sides of the board extend to one of the front side and the opposite side of the back side of the substrate; (B) at least two pairs of corresponding metal surfaces are formed on the front side of the two side ends of the two electrode ends a contact point; (C) forming a fuse link between the two metal-joint contacts corresponding to the two front faces of the two side ends of the two electrode ends to form a fuse link in a straight line, and the fuse link The second end of the part is electrically connected to the two contacts; and (D) is on the front side of the fuse link, the joint of the two metals, and the two side ends of the two electrode ends, and is made of silicone. Covering, forming a covering body, is an explosion-proof layer, and achieving protection.

In another aspect of the present invention, the method of fabricating the metal-connected high-voltage fuse structure further includes, wherein the step (C) has the following sub-step: (C-1) the two-side end of the two-electrode end The two opposite ends of the two metal joints that are connected to each other are adhered to the two ends of the fuse link; and (C-2) is a non-contact heat method of flame, high frequency or hot air, The two metal-bonded joints on the two front sides of the two side end portions of the two electrode end portions are fixed to the two end portions of the fuse link portion.

Moreover, in another technical solution of the present invention, the metal is connected to a high voltage fuse structure, and the method comprises: a substrate, providing a base for forming a metal common high voltage fuse; and two electrode ends respectively disposed on the substrate a side surface extending to one of the front side and the opposite side of the substrate, and the two front ends of the two electrode ends are provided with at least one pair of corresponding metal joints; a contact portion of the two metal portions corresponding to the two front faces of the two side ends of the two electrode end portions, which are connected to each other in a straight line, and electrically connected; The covering body is provided with an explosion-proof layer on the front surface of the two-side end portion which completely covers the melting chain portion, the two metal joints, and the two-side end portions of the two electrodes. Protection; thereby providing a fixed length of the fuse link, so that the resistance value and the fuse characteristics are fixed, so that the fuse has high yield, high quality, high security.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be further described in detail with reference to the accompanying drawings and embodiments. FIG. 1 and FIG. And a schematic diagram of the detailed items of the preferred embodiment of the present invention. The manufacturing method of the metal high-voltage fuse 1 structure of the present invention comprises the following steps: (A) providing a substrate 2, and providing two electrode end portions 3 on the two sides of the substrate 2, respectively disposed on the substrate 2 Both sides extend to two side ends 31, 32 of one of the front surface 21 and the back surface 22 of the substrate 2; (B) at least one pair of the front sides of the two side end portions 31, 32 of the two electrode end portions 3 are formed. Corresponding metal joints 33, 34; (C) between the two side ends 31, 32 of the two electrode ends 3 corresponding to the two metal joints 33, 34 a fuse link 4 is formed in a straight line, and the two ends of the fuse link 4 are electrically connected to the two contacts 33, 34; and (D) is connected to the fuse link 4 and the two metals. The front surfaces of the contacts 33, 34 and the two side end portions 31, 32 of the two electrode end portions 3 are covered with silicone to form a covering body 5, which is an explosion-proof layer for protection.

In the practice of the present invention, the step (C) has the following sub-steps: (C-1) corresponding to the two front sides of the two side ends 31, 32 of the two-electrode end portion 3 Two joints of the two metal joints 33, 34 are fixed at the two ends of the fuse link 4; and (C-2) is non-contact heat mode such as flame, high frequency or hot air, and the second power Extreme Part 3 2 The two metal-bonded contacts 33, 34 on the front sides of the side ends 31, 32 are fixed to the two ends of the fuse link 4.

Please refer to the third and fourth figures, which are schematic perspective views of the appearance of the present invention and a partial cross-sectional perspective view of the present invention. The structure of the metal high-voltage fuse 1 is characterized in that: a substrate 2 is provided to provide a metal-connected high-voltage fuse 1; and two electrode ends 3 are respectively disposed on two sides of the substrate 2, and Extending to one of the front surface 21 of the substrate 2 and the two side end portions 31, 32 of the reverse surface 22, and at least two opposite sides of the two side end portions 31, 32 of the two electrode end portions 3 are provided with corresponding metal Commonly connected contacts 33, 34; a molten metal portion 4, the two ends of which are respectively connected to the two metal joints corresponding to the two front sides of the two side end portions 31, 32 of the two electrode end portions 3 33, 34 are connected in a straight line, and are electrically connected; and a covering body 5 is provided with a silicone cover (Silicon) to completely cover the fuse link portion 4, the two metal joints 33, 34, and On the front surface of the two side end portions 31, 32 of the two electrode end portions 3, an explosion-proof layer is provided for protection; however, as described above, only one of the preferred embodiments of the present invention is described, and thus the limitation is not limited. The patent scope of the present invention is such that the equivalent structure of the specification and the drawings of the present invention is used directly or indirectly. It should be understood that it should be included in the scope of the spirit of the present invention and be combined with Chen Ming.

In order to make the invention more progressive and practical, the advantages are listed as follows:

1. The metal of the invention is connected to a high voltage fuse, and has a fuse link and a metal at the end. This good positioning design has good product stability, no waste of materials and high production yield.

2. The metal of the invention is connected to a high-voltage fuse. When the processed solder joint is operated, local high temperature is not easy to cause high-temperature diffusion of the metal, and the protection is complete, which can meet the market demand.

3. The metal of the invention is connected to a high voltage fuse, and the fuse link is fixed by metal, and is fixed to The end of the electrode is stable in quality and can be used to ensure the normal rated maximum operating current.

4. The invention has the covering body, avoids the occurrence of minute fuse link and end damage, can protect the circuit safety, and the expensive equipment will not be damaged, burned, injured or dangerous accident.

5. Use value and actual needs in the business community and industry.

In summary, the present invention has achieved the desired effect under the prior art structure, and is not familiar to those skilled in the art. Moreover, the present invention has not been disclosed before the application, and it has The progressive and practicality has been consistent with the application requirements of the invention patent, and the invention application has been filed according to law.

1‧‧‧Metal high voltage fuse

2‧‧‧Substrate

21‧‧‧ positive

22‧‧‧n

3‧‧‧electrode end

31, 32‧‧‧ side end

33, 34‧‧‧Contacts

4‧‧‧Fuse chain

5‧‧‧ Covering body

The first figure is a schematic flow chart of a preferred embodiment of the present invention.

The second drawing is a schematic diagram of the detailed items of the preferred embodiment of the present invention.

The third figure is a schematic view of the three-dimensional combination of the appearance of the present invention.

The fourth figure is a partial cross-sectional schematic view of the present invention.

1‧‧‧Metal high voltage fuse

2‧‧‧Substrate

21‧‧‧ positive

22‧‧‧n

3‧‧‧electrode end

31, 32‧‧‧ side end

33, 34‧‧‧Contacts

4‧‧‧Fuse chain

5‧‧‧ Covering body

Claims (3)

A metal-connected high-voltage fuse structure includes: a substrate for providing a metal-connected high-voltage fuse; the two electrode ends are respectively disposed on two sides of the substrate and extending to one of the front sides of the substrate a second side end portion of the opposite side, and the two front ends of the two electrode end portions are provided with at least one pair of corresponding metal joints; a melt chain portion, the two ends of which are respectively The two metal-joined contacts of the two front sides of the two side ends of the two electrode ends are connected in a straight line and electrically connected; and a covering body is made of silicone. Providing an explosion-proof layer on the front surface of the two sides of the fuse link portion, the two metal joints, and the two side end portions of the two electrode ends, thereby providing a protection function; thereby providing a fuse line length Fixed, so that the resistance value and the fuse characteristics are fixed, so that the fuse has high yield, high quality, and high safety. A method for manufacturing a metal-connected high-voltage fuse includes the following steps: (A) providing a substrate, and providing two electrode ends on two sides of the substrate, respectively disposed on the two sides of the substrate and extending to the substrate a front side and a back side of the two side ends; (B) at the two front ends of the two electrode ends, at least two pairs of corresponding metal joints are formed; (C) the two electrode ends Between the two opposite sides of the two side faces corresponding to the two metal joints, a fuse link is formed in a straight line, and the two ends of the fuse link and the two contacts are electrically connected. And (D) covering the fuse link, the joint of the two metals, and the two side ends of the two electrode ends with a silicone cover to form a covering body, which is an explosion-proof Layer to achieve protection. The method for manufacturing a metal-connected high-voltage fuse according to claim 2, wherein the step (C) has the following sub-steps: (C-1) affixing the two ends of the two metal-bonded contacts of the two front faces of the two side ends of the two electrode ends to the two ends of the fuse link; And (C-2) in the non-contact thermal manner of flame, high frequency or hot air, the two metal-joint joints on the front side of the two side ends of the two electrode ends and the two ends of the fuse link The department is fixed.