CN215266173U - Paster fuse - Google Patents

Abstract

The utility model discloses a patch fuse, including casing, apron and fuse-element, the casing adopts ceramic material to make and has the cavity, the cavity intussuseption is filled with the filler that is used for the arc extinguishing, the apron with the casing links to each other in order to encapsulate filler in the cavity, the apron includes this somatic part and hole stopper, this somatic part is equipped with the filler hole, the hole stopper is used for blockking up the filler hole, the fuse-element has fusing portion, fusing portion is located in the cavity, the both ends of fuse-element respectively with casing suit joint and part expose the casing sets up. The patch fuse has high breaking capacity and can meet the requirements of new energy vehicles on high-voltage and high-current fuses or fuses.

Description

Paster fuse

Technical Field

The utility model relates to a fuse technical field, more specifically relate to a paster fuse.

Background

With the development of science and technology, electric power/electronic products are increasingly diversified and complicated, and applied circuit protection elements are simple glass tube fuses, but are developed into a wide variety of novel electronic element fields. The paster fuse is a novel element, and the fuse wire both ends are fixed in the circuit and are realized protecting the circuit among the paster fuse. In the field of traditional automobiles, the fuses are protected and controlled by using low voltage, and along with the rise of new energy automobiles, the fuses using the traditional low voltage cannot meet the requirements of large current and large load of the new energy automobiles, namely, the fuses or the fuses meeting high voltage and high current are urgently needed to be used for the new energy automobiles. The fuse of the mainstream product in the existing market adopts a plastic shell, and the plastic shell cannot use filler due to low temperature resistance and structural limitation, so that the breaking capacity is low.

Therefore, there is a need to provide a patch fuse that solves the above-mentioned deficiencies of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high breaking capacity's paster fuse.

In order to realize the above-mentioned purpose, the utility model discloses a patch fuse, including casing, apron and fuse-element, the casing adopts ceramic material to make and has the cavity, the cavity intussuseption is filled with the filler that is used for the arc extinguishing, the apron with the casing links to each other in order to encapsulate filler in the cavity, the apron includes this somatic part and hole stopper, this somatic part is equipped with the filler hole, the hole stopper is used for blockking up the filler hole, the fuse-element has fusing portion, fusing portion is located in the cavity, the both ends of fuse-element respectively with casing suit joint and part expose the casing sets up.

Compared with the prior art, the paster fuse of this application, the casing adopts ceramic material to make and have the cavity to make and to pack the arc extinguishing filler in the cavity, the fusing position is located the cavity, improves the stability of breaking capacity and reinforcing fuse-element, and the instantaneous strong electric arc that produces when preventing fusing portion from generating heat and fusing causes serious damage to the casing. Particularly, the body part is provided with a filler hole, arc extinguishing filler is added through the filler hole, and then the filler hole is plugged by a hole plug for packaging, so that the packaging is convenient and quick. In addition, the parts of the two ends of the melt, which are exposed out of the shell, can be used for welding with an external circuit, so that stable electric connection is realized.

Preferably, the melt is of an integrated structure, so that the service life can be prolonged, the safety performance can be ensured, and the structure is compact.

Preferably, the melt includes a first portion and two bending structures formed by bending and extending along two ends of the first portion respectively in the direction of the cover plate, and the bending structures have buckling portions for being sleeved and clamped to the housing.

Preferably, the bending structure comprises a long section and a short section which are arranged side by side at intervals, and a middle section connected between the long section and the short section, the long section is connected with the first part, and the long section, the short section and the middle section enclose the buckling part.

Preferably, the melt is formed by stamping a metal material.

Preferably, the first portion is provided with the through groove to form the fusing portion in a connecting line direction of the two bending structures.

Drawings

Fig. 1 is the perspective structure diagram of the patch fuse of the present invention.

Fig. 2 is a schematic view of the patch fuse shown in fig. 1 at another angle.

Fig. 3 is a schematic structural view of a hidden cover plate of the patch fuse shown in fig. 1.

Fig. 4 is an exploded view of the patch fuse shown in fig. 1.

Fig. 5 is a schematic structural diagram of the melt of the present invention.

Description of the symbols:

the chip fuse 100, the housing 10, the cavity 11, the cover plate 30, the body portion 31, the filler hole 311, the hole plug 33, the fuse element 50, the first portion 51, the fusing portion 511, the through groove 513, the bending structure 53, the long section 531, the short section 533, the middle section 535, and the buckling portion 55.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

Referring to fig. 1 to 4, the present application discloses a chip fuse 100, which includes a housing 10, a cover plate 30 and a fuse element 50, wherein the housing 10 is made of a ceramic material and has a cavity 11, the cavity 11 is filled with a filler for arc extinction, the cover plate 30 is connected to the housing 10 to encapsulate the filler in the cavity 11, the cover plate 30 includes a body portion 31 and a hole plug 33, the body portion 31 is provided with a filler hole 311, the hole plug 33 is used for plugging the filler hole 311, the fuse element 50 has a fuse portion 511, the fuse portion 511 is located in the cavity 11, two ends of the fuse element 50 are respectively sleeved and clamped with the housing 10, and a portion of the fuse element is exposed out of the housing 10. Preferably, the filler may be, but is not limited to, quartz sand. The body part 31 is packaged on the shell 10, the shell 10 is made of ceramic materials, arc extinguishing filler is filled into the cavity 11 through the filler hole 311 and then sealed through the hole plug 33, and the fusing part 511 is located in the cavity 11, so that the breaking capacity of the fusing part 511 can be effectively improved, and the requirements of a new energy vehicle on a high-voltage high-current fuse or a fuse are met.

Referring to fig. 5, the fuse element 50 has an integrated structure, which not only can prolong the service life, but also can ensure the safety performance, and make the chip fuse 100 compact. Preferably, the melt 50 is formed by stamping a metal material, so that the process is simple, and the preparation cost of the melt 50 is reduced. Further, the melt 50 includes a first portion 51 and two bending structures 53 formed by bending and extending along two ends of the first portion 51 toward the cover plate 30, respectively, and the bending structures 53 have a fastening portion 55 for being sleeved and fastened to the housing 10. That is to say, the fastening portions 55 at two ends of the first portion 51 are fastened to the housing 10 so that the first portion 51 is located in the cavity 11, and not only the melt 50 is fixed to the housing 10, but also the first portion 51 extends into the cavity 11, and the bending structure 53 is partially exposed out of the housing 10 for welding with an external circuit, and it should be understood that the first portion 51 is located in the cavity 11 so that the fusing portion 511 is suspended in the cavity 11. Specifically, the bending structure 53 includes a long section 531 and a short section 533 spaced side by side, and a middle section 535 connected between the long section 531 and the short section 533, wherein the long section 531 is connected to the first portion 51, and the long section 531, the short section 533 and the middle section 535 enclose the fastening portion 55. It can be understood that, the length of the long section 531 is greater than the length of the short section 533, one end of the long section 531 is connected to the first portion 51, the other end is connected to the middle section 535, the other end of the middle section 535 is connected to the short section 533, when the buckling portion 55 of the bending structure 53 is buckled on the housing 10, the long section 531 and the short section 533 are located at two sides of the housing 10, the long section 531 is located at one side of the cavity 11, the short section 533 is located at the other side, and when the chip fuse 100 is fixed by welding, the middle section 535 and the short section 533 can both be a welding point, so as to install the chip fuse 100 in a desired circuit.

Referring to fig. 5, the first portion 51 is formed with a through slot 513 to form a fusing portion 511 in a connecting direction (see direction K in fig. 5) of the two bending structures 53. Due to the arrangement of the through groove 513, the first portion 51 forms a high resistance/heat generating point, as shown in fig. 5, at the portion at both sides of the through groove 513 (i.e. the connection direction of the bent structure 53, see direction K in fig. 5), i.e. the fusing portion 511 is firstly heated and fused to cut off the overcurrent in case of overcurrent, so as to protect. The size of the through slot 513 may be adjusted according to different current specifications, and is not limited herein.

Compared with the prior art, the patch fuse 100 of the application has the advantages that the shell 10 is made of the ceramic material and is provided with the cavity 11, so that arc extinguishing filler can be filled in the cavity 11, the fusing part 511 is located in the cavity 11, the breaking capacity is improved, the stability of the melt 50 is enhanced, and the shell 10 is prevented from being seriously damaged by instantaneous strong electric arc generated when the fusing part 511 is fused due to heating. In particular, the body 31 is provided with a filling hole 311, and the arc extinguishing filler is added through the filling hole 311, and then the hole plug 33 is plugged into the filling hole 311 for packaging, which is convenient and fast. In addition, the portions of the melt 50 exposed from the housing 10 at both ends can be used for soldering with an external circuit, so that a stable electrical connection can be realized.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims (6)

1. The utility model provides a patch fuse, its characterized in that includes casing, apron and fuse-element, the casing adopts ceramic material to make and has the cavity, the cavity intussuseption is filled with the filler that is used for the arc extinguishing, the apron with the casing links to each other in order to encapsulate the filler in the cavity, the apron includes somatic part and hole stopper, somatic part is equipped with the filler hole, the hole stopper is used for blockking up the filler hole, the fuse-element has fusing portion, fusing portion is located in the cavity, the both ends of fuse-element respectively with casing suit joint just part exposes the casing sets up.

2. The patch fuse of claim 1, wherein said fuse body is a unitary structure.

3. The chip fuse as recited in claim 2, wherein the fuse element comprises a first portion and two bent structures formed by bending and extending along two ends of the first portion toward the cover plate, respectively, and the bent structures have a fastening portion for being fastened to the housing in a sleeving manner.

4. The chip fuse as defined in claim 3 wherein the folded structure includes a long section and a short section spaced side-by-side, and an intermediate section connected between the long section and the short section, the long section being connected to the first portion, the long section, the short section, and the intermediate section enclosing the snap-fit portion.

5. The patch fuse of claim 4 wherein said fuse body is formed by stamping a metal material.

6. A patch fuse as claimed in claim 3, wherein said first portion is provided with a through slot to form said fuse portion in a direction connecting said two said bent structures.

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