阅读说明：本技术 一种高压管状保险丝 (High-voltage tubular fuse ) 是由 李永杰 黄奇波 于 2021-08-20 设计创作，主要内容包括：本公开提供了一种高压管状保险丝,包括绝缘保护外壳、第一端电极、第二端电极以及熔断元件,第一端电极位于绝缘保护外壳一端,第二端电极位于绝缘保护外壳另一端,绝缘保护外壳内部填充有多层非导电层,熔断元件位于绝缘保护外壳内部并穿过非导电层,熔断元件的一端通过第一焊锡与第一端电极连接,熔断元件的另一端通过第二焊锡与第二端电极连接,第一端电极和第二端电极连接到熔断元件以将该高压管状保险丝连接到需要保护的电路之间。由此,能够解决现有的保险丝不能承受高电压、高电流以及高温环境的问题。(The utility model provides a high-voltage tubular fuse, including insulating protective housing, first end electrode, second end electrode and fuse element, first end electrode is located insulating protective housing one end, second end electrode is located the insulating protective housing other end, insulating protective housing is inside to be filled there are the non-conductive layer of multilayer, fuse element is located insulating protective housing is inside and passes the non-conductive layer, fuse element's one end is connected with first end electrode through first soldering tin, fuse element's the other end passes through second soldering tin and is connected with second end electrode, first end electrode and second end electrode are connected to fuse element in order to be connected to this high-voltage tubular fuse between the circuit that needs the protection. Therefore, the problem that the conventional fuse cannot bear high voltage, high current and high-temperature environment can be solved.)

1. A high-voltage tubular fuse is characterized by comprising an insulating protective shell, a first end electrode, a second end electrode and a fuse element, wherein the first end electrode is positioned at one end of the insulating protective shell, the second end electrode is positioned at the other end of the insulating protective shell, multiple layers of non-conductive layers are filled in the insulating protective shell, the fuse element is positioned in the insulating protective shell and penetrates through the non-conductive layers, one end of the fuse element is connected with the first end electrode through first soldering tin, the other end of the fuse element is connected with the second end electrode through second soldering tin, and the first end electrode and the second end electrode are connected to the fuse element so as to connect the high-voltage tubular fuse to a circuit needing protection.

2. The high-voltage tubular fuse according to claim 1,

the fusing element is made of silver.

3. The high-voltage tubular fuse according to claim 1,

the insulating protective shell is a ceramic tube.

4. The high-voltage tubular fuse according to claim 1,

the non-conductive layer is at least one of ceramic, ceramic-glass mixture and quartz sand.

5. A high-voltage tubular fuse according to claim 3,

and a plurality of breathable micropores are distributed on the surface of the ceramic tube.

6. The high-voltage tubular fuse according to claim 5,

the micropores of the upper half part of the ceramic tube are denser than those of the lower half part.

7. A high-voltage tubular fuse according to claim 3,

the ceramic tube is a hollow cylindrical tube body, and the fusing element is arranged at one end of the cylindrical tube body deviated from the center.

8. The high-voltage tubular fuse according to claim 1,

the first terminal electrode and the second terminal electrode are made of at least one of silver, copper, tin and nickel.

9. The high-voltage tubular fuse according to claim 1,

the fusing element is an elongated metal sheet.

10. The high-voltage tubular fuse according to claim 9,

a plurality of openings are uniformly distributed on the metal sheet, and the openings enable the surface of the fusing element to form a plurality of fusing parts.

Technical Field

The invention relates to the technical field of fuses, in particular to a high-voltage tubular fuse.

Background

Fuses are also known as current fuses, which the IEC127 standard defines as "fusible links". It mainly plays a role of overload protection. The fuse is correctly arranged in the circuit, and the fuse can be fused to cut off the current when the current is abnormally increased to a certain height and heat, so that the safe operation of the circuit is protected.

The shape and size of the fuse are different, and the fuse can be divided into a tubular fuse, a sheet fuse, a guillotine fuse, a spiral fuse, a flat fuse and the like according to the shape of the fuse. According to the volume of the fuse, the fuse can be divided into a large fuse, a medium fuse, a small fuse and a micro fuse.

At present, the tubular fuse in the market generally adopts a fuse element as a fused body, the maximum voltage of the fuse element can be borne by the fuse element is 250V, if the fuse element is installed in a circuit with higher voltage, when the fuse element is fused, an arc which is not easy to extinguish can be generated inside an insulating protective shell, and the temperature and the air pressure inside the insulating protective shell can be sharply increased by the arc, and explosion can be caused.

Disclosure of Invention

An object of the disclosed embodiment is to provide a high-voltage tubular fuse, which can solve the problem that the existing fuse cannot withstand high voltage, high current and high temperature environment.

To this end, the present disclosure provides a high voltage tubular fuse including an insulating protective case, a first end electrode located at one end of the insulating protective case, a second end electrode located at the other end of the insulating protective case, a plurality of non-conductive layers filled in the insulating protective case, and at least one fuse element located in the insulating protective case and passing through the non-conductive layers, one end of the fuse element being connected to the first end electrode through a first solder, the other end of the fuse element being connected to the second end electrode through a second solder, the first end electrode and the second end electrode being connected to the fuse element to connect the fuse between circuits to be protected.

In the above aspect, the high-voltage tubular fuse may be formed by disposing a plurality of fuse elements between the plurality of nonconductive layers and soldering the fuse elements between the first terminal electrode and the second terminal electrode by solder. Furthermore, the fuse can be connected between circuits or electronic components to be protected to play a role of protecting the circuits. On the other hand, the design of multiple fuse elements can enable the fuse to bear higher voltage, high-voltage protection can be achieved, and in addition, multiple layers of non-conductive layers can enable the fuse to bear higher temperature.

In addition, in the high-voltage tubular fuse according to the present disclosure, the fuse element may be made of silver. This allows the fuse element to receive a higher voltage.

Further, in the high-voltage tubular fuse according to the present disclosure, optionally, the insulating protective case is a ceramic tube. This can enhance the insulation between the fuse and the outside.

In addition, in the high-voltage tubular fuse according to the present disclosure, optionally, the non-conductive layer is at least one of ceramic, glass, and quartz sand. This can enhance the insulation property and high temperature resistance of the nonconductive layer.

In addition, in the high-voltage tubular fuse according to the present disclosure, optionally, a plurality of gas-permeable micro-holes are distributed on the surface of the ceramic tube. This makes it possible to weld the fuse more firmly.

In addition, in the high-voltage tubular fuse according to the present disclosure, the ceramic tube may have a dense upper half with pores than a lower half. This makes it possible to weld the fuse more firmly.

In addition, in the high-voltage tubular fuse according to the present disclosure, the ceramic tube may be a hollow circular tube, and the fuse element may be disposed at an end of the cylindrical tube that is offset from the center. Therefore, the internal element of the ceramic tube can be conveniently accommodated, and the off-center arrangement mode of the fusing element can reliably interrupt high voltage.

In addition, in the high-voltage tubular fuse according to the present disclosure, the material of the first terminal electrode and the second terminal electrode may be at least one of silver, copper, tin, and nickel. Thereby, the electrical conductivity of the fuse can be enhanced.

In addition, in the high-voltage tubular fuse according to the present disclosure, the fuse element may be an elongated metal sheet. This allows the fuse element to receive a higher voltage.

In addition, in the high-voltage tubular fuse according to the present disclosure, optionally, a plurality of oblong holes are uniformly distributed on the metal sheet, and the oblong holes form a plurality of fusing parts on the surface of the fusing element. This enables the fuse to be safely blown at high voltage.

In the above aspect, the high-voltage tubular fuse may be formed by disposing a plurality of fuse elements between the plurality of nonconductive layers and soldering the fuse elements between the first terminal electrode and the second terminal electrode by solder. Furthermore, the fuse can be connected between circuits or electronic components to be protected to play a role of protecting the circuits. On the other hand, the design of multiple fuse elements can enable the fuse to bear higher voltage, high-voltage protection can be achieved, and in addition, multiple layers of non-conductive layers can enable the fuse to bear higher temperature.

Drawings

To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can also obtain other drawings according to the drawings without inventive labor.

Fig. 1 is a front cross-sectional view of a high-voltage tubular fuse provided in an embodiment of the present disclosure;

fig. 2 is a perspective view of a ceramic tube according to an embodiment of the present disclosure;

fig. 3 is a front cross-sectional view of a high voltage tubular fuse according to another embodiment of the present disclosure.

Wherein, in the figures, the respective reference numerals:

insulating protective housing … 1, first terminal electrode … 21, second terminal electrode … 22, fuse element … 3, first solder … 41, second solder … 42, non-conductive layer … 5, ceramic tube … 10, micro-hole … 11, first fuse element … 31, second fuse element … 32, and third fuse element 33.

Detailed Description

The inventor finds that the following technical problems exist in the prior art: the ultrasonic cosmetic probe has a single function and cannot achieve multiple functions of ultrasonic signals sent by an ultrasonic generator.

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present disclosure more clearly understood, the present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the disclosure and are not intended to limit the disclosure.

Fig. 1 is a front cross-sectional view of a high-voltage tubular fuse provided in an embodiment of the present disclosure; FIG. 2 is a front cross-sectional view of a high voltage tubular fuse according to another embodiment of the present disclosure; FIG. 3 is a perspective view of a ceramic tube according to an embodiment of the present disclosure

Referring to fig. 1 to 3, the high-voltage tubular fuse (hereinafter, simply referred to as a fuse) according to the present embodiment may include an insulating protective case 1, a first terminal electrode 21, a second terminal electrode 22, and a fuse element 3.

In this embodiment, the high voltage tubular fuse may include an insulating protective housing 1, a first end electrode 21, a second end electrode 22, and at least one fuse element 3, the first end electrode 21 may be located at one end of the insulating protective housing 1, the second end electrode 22 may be located at the other end of the insulating protective housing 1, the insulating protective housing 1 may be filled with a plurality of non-conductive layers 5, the fuse element 3 may be located inside the insulating protective housing 1 and pass through the non-conductive layers 5, one end of the fuse element 3 is connected to the first end electrode 21 through a first solder 41, the other end of the fuse element 3 is connected to the second end electrode 22 through a second solder 41, and the first end electrode 21 and the second end electrode 22 are connected to the fuse element 3 to connect the high voltage tubular fuse between circuits to be protected.

In the above-described embodiment, the high-voltage tubular fuse can be formed by disposing a plurality of fuse elements 3 between the plurality of nonconductive layers 5, and soldering the fuse elements 3 between the first terminal electrode 21 and the second terminal electrode 22 by solder (including the first solder 41 and the second solder 42). Furthermore, the fuse can be connected between circuits or electronic components to be protected to play a role of protecting the circuits. On the other hand, the design of multiple fuse elements 3 can make the fuse withstand higher voltage, enabling high voltage protection, and the multiple non-conductive layers can also make the fuse withstand higher temperature.

In some examples, fuse element 3 may be made of silver. In this case, the fuse element 3 can be subjected to a higher voltage due to the high temperature resistance of silver. In other examples, fuse element 3 may be made of nickel, copper, silver, gold, tin, or an alloy thereof.

In some examples, the insulating protective housing 1 may be a ceramic tube 10 (refer to fig. 3). This can enhance the insulation between the fuse and the outside (external electric device).

In some examples, the non-conductive layer 5 may be at least one of ceramic, glass, quartz sand. In this case, the ceramic, glass, or quartz sand can further enhance the insulation and high temperature resistance of the non-conductive layer 5.

In some examples, the ceramic tube has a surface distribution of gas-permeable pores. Under the condition, when a product or the fuse is welded, air in the ceramic tube can be discharged from the micropores so as to balance the internal and external pressure of the ceramic tube, the first soldering tin 41 and the second soldering tin 42 are prevented from overflowing under the influence of the internal air pressure of the ceramic tube, the fuse is ensured to be firmly welded, and the bad phenomena of insufficient solder, flowing tin and the like are reduced, so that the quality of the fuse is improved.

In some examples, the pores of the upper half of the ceramic tube 10 are denser than the pores of the lower half. This makes it possible to weld the fuse more firmly.

In some examples, the ceramic tube 10 is a hollow circular tube body. In this case, it can be convenient for the ceramic tube 10 to accommodate the internal elements.

In some examples, the material of the first terminal electrode 21 and the second terminal electrode 22 may be at least one of silver, copper, tin, and nickel. In this case, the electrical conductivity of the fuse can be enhanced due to the excellent electrical conductivity of silver, copper, tin, and nickel.

In some examples, the fuse element 3 may be an elongated metal sheet. In this case, the fuse element can be subjected to a higher voltage.

In some examples, the insulating protective housing 1 may be made of a flame retardant insulating material.

In some examples, a plurality of openings may be uniformly distributed on fuse element 3. In some examples, the shape of the aperture may be circular, rectangular, square, elongated or other irregular pattern with rounded ends, etc.

It will be appreciated that these openings may form a plurality of fusing portions in fuse element 3, which may be fused together and the circuit may be cut off when a circuit failure or circuit abnormality occurs. And during the fusing process, the arc is divided into a plurality of small segments and quickly extinguished.

Fig. 3 is a front cross-sectional view of a high voltage tubular fuse according to another embodiment of the present disclosure.

Referring to fig. 2, in this embodiment, the high voltage tubular fuse may include an insulating protective housing 1, a first end electrode 21, a second end electrode 22, and at least one fuse element 3, the first end electrode 21 may be located at one end of the insulating protective housing 1, the second end electrode 22 may be located at the other end of the insulating protective housing 1, the insulating protective housing 1 may be filled with a plurality of non-conductive layers 5, the fuse element 3 may be located inside the insulating protective housing 1 and pass through the non-conductive layers 5, one end of the fuse element 3 is connected to the first end electrode 21 by a first solder 41, the other end of the fuse element 3 is connected to the second end electrode 22 by a second solder 41, and the first end electrode 21 and the second end electrode 22 are connected to the fuse element 3 to connect the high voltage tubular fuse to a circuit to be protected. The insulating protective housing 1 may be implemented by a cylindrical ceramic tube, the fuse element 3 may be implemented by a silver metal sheet, the first end electrode 21 and the second end electrode 22 may be welded to both ends of the ceramic tube by copper caps, the silver metal sheet may be welded between the two copper caps, and the non-conductive layer in the ceramic house may be formed by ceramic injection molding.

Unlike the above embodiments, the silver metal piece of the present embodiment may be provided at one end of the ceramic tube below the central axis L. In this case, by arranging the silver-based metal piece on the side of the central axis L of the ceramic tube so that the thickness of the ceramic above the fuse element is greater than the thickness of the ceramic below the element, the fuse can ensure that the fuse body does not break when the fuse link is interrupted in response to a fault condition, and the safety performance of the fuse can be enhanced.

In other examples, considering that the insulating protective sheath 1 is of a cylindrical configuration, silver metal sheets may be provided on any side of the ceramic tube offset from the central axis L, it being understood that the effects achieved by this arrangement are consistent with those achieved by the above-described arrangement.

In this embodiment, the manufacturing processes of the ceramic tube, the non-conductive layer 5, and the fuse element may be as follows:

the ceramic tube can be manufactured firstly; the non-conductive layer 5 and the fuse element may be fired at a temperature of 400 to 1500 c for 10 to 120 minutes to form a body of the fuse; finally, the fired body portion may be placed in a ceramic tube.

In other examples, when the non-conductive layer 5 is a ceramic or ceramic-glass mixture, the ceramic tube and the non-conductive layer 5 may be fired together with the fuse element as a single body. Specifically, the ceramic may be formed layer by layer in a ceramic tube mold, and the fuse element may be fired between specific layers (e.g., between layers offset from the central axis L) therein, eventually completing the formation of the remaining ceramic sheets.

In the present embodiment, by stacking the non-conductive layer 5 with the fuse element 3 and arranging the stack of fuse elements to be offset to either side of the central axis L, for example, arranging the fuse element below the central axis L of the fuse with respect to a vertical axis, the thickness of the ceramic sheet layer above the fuse element 3 can be made larger than the thickness of the ceramic below the fuse element 3, the fuse can be made to ensure that the fuse body does not rupture when the fuse element 3 breaks in response to a fault condition, and the safety of the fuse as a whole can be ensured.

In other examples, when the non-conductive layer 5 is quartz sand, the fuse element and the quartz sand may be filled in an already fired ceramic tube.

In this embodiment, after the ceramic tube and its internal components (including the non-conductive layer 5 and the fuse element 3) are completed, the first and second end electrodes 21 and 22 may be soldered between the fuse element 3 and the ceramic tube by using solder.

In the present embodiment, by stacking non-conductive layers 5 with fuse element 3 and arranging fuse element 3 to be offset to either side of central axis L, for example, arranging the fuse element below central axis L of the fuse with respect to a vertical axis, the thickness of non-conductive layer 5 above fuse element 3 can be made larger than the thickness of non-conductive layer 5 below fuse element 3, the fuse can be made to ensure that the fuse body does not rupture when fuse element 3 breaks in response to a fault condition, and the safety of the fuse as a whole can be ensured.

The specific working principle is as follows:

when the fuse is used, the fuse can be installed in a circuit to be protected. When a circuit is in failure or abnormal, the current passing through the fusing element increases, the temperature of the fusing element rises, and when the temperature rises to a certain value, the fusing part on the fusing element fuses simultaneously to cut off the circuit. During the fusing process, the arc is broken into small segments and quickly extinguished.

In the above-described aspect, the high-voltage tubular fuse may be formed by disposing a plurality of fuse elements 3 between the plurality of nonconductive layers 5, and soldering the fuse elements 3 between the first terminal electrode 21 and the second terminal electrode 22 by solder (including the first solder 41 and the second solder 42). Furthermore, the fuse can be connected between circuits or electronic components to be protected to play a role of protecting the circuits. On the other hand, the design of multiple fuse elements 3 can make the fuse withstand higher voltage, enabling high voltage protection, and the multiple non-conductive layers can also make the fuse withstand higher temperature.

The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.