CN214956728U

CN214956728U - Fuse protector

Info

Publication number: CN214956728U
Application number: CN202121419510.4U
Authority: CN
Inventors: 赵志成; 严心亮; 何炳忠; 黄斌
Original assignee: Dongguan Advanced Surgetech Material Co ltd
Current assignee: Dongguan Advanced Surgetech Material Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-11-30
Anticipated expiration: 2031-06-24

Abstract

The utility model discloses a fuse, including box portion and 1 at least fusing device, this fusing device have the fuse portion and connect in the terminal part at fuse portion both ends, fuse portion and both ends sub-unit are H type structure, the fuse portion accomodate in the box portion, terminal part stretches out the box portion is in order to form grafting portion. The fuse can be directly inserted into a using circuit by virtue of the insertion part, the fixation of screws or bolts is avoided, and the quick disassembly, the replacement and the use of the fuse are realized.

Description

Fuse protector

Technical Field

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

Background

A fuse, also called a fuse, is an electrical component installed in an electrical circuit to ensure the safe operation of the circuit, i.e. belongs to a short-circuit protector. The fuse is widely applied to high and low voltage distribution systems, control systems and electric equipment, and is one of the most commonly applied protection devices as a short circuit and overcurrent protector. The fuse belongs to the consumable article, needs often to change, and the contact of current fuse and connecting device installation are inconvenient inadequately, and the connection operation is comparatively complicated, troublesome.

Therefore, it is necessary to provide a fuse to solve the above-mentioned deficiencies of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a quick assembly disassembly, change convenient fuse.

In order to achieve the above object, the utility model discloses a fuse, including box portion and 1 at least fusing device, this fusing device have the fuse portion and connect in the terminal part at fuse portion both ends, fuse portion and both ends terminal part are H type structure, the fuse portion accomodate in the box portion, the terminal part stretches out the box portion is in order to form grafting portion.

Compared with the prior art, the fuse of this application, including box portion and 1 at least fusing device, fusing device's fuse-element position is in box portion, and the fuse-element portion is H type structure with both ends branch portion, and terminal part stretches out box portion can in order to form grafting portion, with grafting portion disect insertion use circuit, avoid screw or bolt fastening, realize quick assembly disassembly, the change convenience and the convenient to use of fuse.

Preferably, the lower end of the insertion part is provided with at least two plug-in units which are arranged in parallel at intervals, a slot is formed between the two plug-in units, and the connection reliability of the fuse during installation is improved by arranging the two plug-in units.

Preferably, the box portion includes an upper shell and a lower shell, the upper shell and the lower shell are combined to form a cavity, and the upper shell and the two sides of the lower shell form an avoiding groove for mounting the terminal portion.

Preferably, the upper casing or the lower casing is provided with a through hole communicated with the cavity, the cavity is filled with arc-extinguishing materials, the cover body is used for blocking the through hole to realize sealing, the cover body blocks the through hole, and the arc-extinguishing materials in the cavity cannot leak out. The arc extinguishing material is filled in the cavity, so that the breaking capacity is improved, the stability of the melt part is enhanced, and the upper shell and the lower shell are prevented from being seriously damaged by instantaneous strong electric arc generated when the melt part is fused. Arc extinguishing materials are added through the through holes, then the cover body blocks the through holes to realize sealing, and the filling and the use are convenient.

Preferably, the fuse further comprises a fixing portion, the upper case is provided with a first fixing hole, the terminal portion is provided with a second fixing hole, the lower case is provided with a third fixing hole, and the fixing portion penetrates through the first fixing hole, the second fixing hole and the third fixing hole to fix the upper case, the terminal portion and the lower case.

Preferably, the melt part comprises a plurality of fusing units arranged in parallel at intervals.

Preferably, a connecting portion is disposed between the fuse portion and the terminal portion, the connecting portion includes a first connecting member and a second connecting member connected to each other, the fuse portion extends to form the first connecting member, and the first connecting member bends and extends toward the terminal portion to form the second connecting member connected to the terminal portion.

Preferably, the upper shell and the lower shell are made of ceramic materials, and the breaking capacity is further improved.

Preferably, a limiting part is arranged between the two avoiding grooves, and a limiting notch matched with the limiting part is arranged at the lower end of the inserting part.

Preferably, the two fusing devices are arranged in parallel, so that the breaking capacity is further improved.

Drawings

Fig. 1 is a schematic perspective view of the fuse of the present invention.

Figure 2 is an exploded view of the fuse shown in figure 1.

Fig. 3 is a schematic view of the upper case of the fuse shown in fig. 2.

Fig. 4 is a schematic structural view of a fuse device in the fuse shown in fig. 2.

Fig. 5 is a sectional view of the fuse shown in fig. 1.

Figure 6 is another angular cross-sectional view of the fuse shown in figure 1.

Description of the symbols:

the fuse 100, the box body 10, the upper case 11, the avoiding groove 111, the limiting portion 113, the first fixing hole 115, the cavity 12, the lower case 13, the through hole 14, the cover 15, the fusing device 30, the fuse body portion 31, the fusing unit 311, the terminal portion 33, the inserting portion 331, the inserting piece 333, the inserting slot 335, the second fixing hole 337, the limiting notch 339, the connecting portion 35, the first connecting piece 351, the second connecting piece 353 and the fixing portion 50.

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. 1-4, the present application discloses a fuse 100, which includes a box 10 and at least 1 fuse device 30, the fuse device 30 has a fuse portion 31 and terminal portions 33 connected to two ends of the fuse portion 31, the fuse portion 31 and the two terminal portions 33 are in an H-shaped structure, the fuse portion 31 is received in the box 10, and the terminal portions 33 partially extend out of the box 10 to form a plug portion 331. The plug-in part 331 is inserted and communicated with an external circuit, so that the fuse 100 can be conveniently disassembled, assembled and replaced. The concrete description is as follows:

referring to fig. 5-6, the box portion 10 includes an upper shell 11 and a lower shell 13, the upper shell 11 and the lower shell 13 are combined to form a cavity 12, and a relief groove 111 for mounting the terminal portion 33 is formed between two sides of the upper shell 11 and the lower shell 13, the relief groove 111 allows the terminal portion 33 and the upper shell 11 and the lower shell 13 to be more compact. Further, the upper shell 11 and the lower shell 13 are made of ceramic materials, and the upper shell 11 and the lower shell 13 are made of ceramic materials, so that the breaking capacity is improved. Furthermore, the fuse 100 further includes a cover 15, the upper case 11 or the lower case 13 is provided with a through hole 14 communicating with the cavity 12, the cavity 12 is filled with arc extinguishing material, and the cover 15 is used to block the through hole 14 for sealing. That is, the cover 15 is engaged with the through hole 14, the arc-extinguishing material is filled into the cavity 12 through the through hole 14, and then the cover 15 blocks the through hole 14 for sealing, thereby preventing the arc-extinguishing material from flowing out. The arc extinguishing material is convenient to fill, the breaking capacity is greatly improved and the stability of the melt part 31 is enhanced after the arc extinguishing material is filled, and the phenomenon that the upper shell 11 and the lower shell 13 are seriously damaged by instantaneous strong electric arc generated when the melt part 31 is fused is prevented. The arc-extinguishing material may be, but is not limited to, quartz sand. As for the arrangement of the through-hole 14, the through-hole 14 is arranged in the upper case 11 in one embodiment, and the through-hole 14 is arranged in the lower case 13 in another embodiment, but it is also possible to arrange the through-hole 14 in both the upper case 11 and the lower case 13, and accordingly arrange the cover 15 matching therewith. Preferably, a limiting portion 113 is disposed between the two avoiding grooves 111, a limiting notch 339 matched with the limiting portion 113 is disposed at the lower end of the inserting portion 331, and when the fusing device 30 is installed and fixed, the limiting notch 339 is matched with the limiting portion 113 to realize limiting matching, so as to realize compact structure between the fusing device 30 and the upper and

lower shells

11 and 13.

Referring to fig. 1 and 3 to 4, the fuse 100 further includes a fixing portion 50, the upper case 11 is provided with a first fixing hole 115, the terminal portion 33 is provided with a second fixing hole 337, the lower case 13 is provided with a third fixing hole (not shown), and the fixing portion 50 passes through the first fixing hole 115, the second fixing hole 337 and the third fixing hole to fix the upper case 11, the terminal portion 33 and the lower case 13. The fixing portion 50 may be, but is not limited to, a screw, a bolt, etc. Not only the coupling of the upper case 11 and the lower case 13 but also the stable fixing of the terminal portion 33 between the upper case 11 and the lower case 13 can be achieved by the fixing portion 50.

Referring to fig. 4, the melting unit 31 includes a plurality of fusing units 311 arranged in parallel at intervals. In this example, 3 fusing units 311 are provided, and the fusing units 311 are equally spaced between the two terminal portions 33. Thereby not only saving materials, but also realizing high breaking capacity. Further, the fusing devices 30 are arranged in parallel, that is, two parallel fusing devices 30 are arranged between the upper shell 11 and the lower shell 13, so that the breaking capacity is improved, and the requirements of new energy vehicles are better met.

Referring to fig. 4, a connecting portion 35 is disposed between the melt portion 31 and the terminal portion 33, the connecting portion 35 includes a first connecting member 351 and a second connecting member 353 connected to each other, the melt portion 31 extends to form the first connecting member 351, and the first connecting member 351 bends toward the terminal portion 33 to form the second connecting member 353 connected to the terminal portion 33. The fuse portion 31 and the terminal portion 33 are connected by the connecting portion 35, and the connecting portion 35 has a bent structure, so that the 2 fuse devices 30 can be arranged in a concave-convex manner at the position of the fuse portion 31, and the distance between the fuse portions 31 of the two parallel fuse devices 30 is increased, thereby improving the safety and stability of the fuse 100.

Referring to fig. 1, the lower end of the insertion part 331 has at least two plug-ins 333 arranged at intervals, a slot 335 is formed between the two plug-ins 333, the connection between the insertion part 331 and the external circuit is easier to be realized through the arrangement of the plug-ins 333 and the slot 335, and the connection reliability of the fuse 100 during installation can be improved.

Compared with the prior art, fuse 100 of this application, including box portion 10 and 1 at least fusing device 30, fusing device 30's fuse portion 31 is located box portion 10, and fuse portion 31 is H type structure with both ends branch 33, and terminal portion 33 part stretches out box portion 10 in order to form grafting portion 331, inserts grafting portion 331 in using the circuit, avoids screw or bolt fastening, realizes fuse 100's quick assembly disassembly, change convenience and convenient to use.

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

1. A fuse, comprising:

a case portion;

at least 1 fusing device, which is provided with a fused part and terminal parts connected with the two ends of the fused part, wherein the fused part and the two terminal parts are in an H-shaped structure,

the melt part is accommodated in the box body part, and the terminal part partially extends out of the box body part to form a plug part.

2. The fuse of claim 1, wherein the lower end of the insertion portion has at least two spaced apart inserts defining a slot therebetween.

3. The fuse according to claim 1, wherein the housing portion includes an upper case and a lower case, the upper case and the lower case are combined to form a cavity, and an escape groove for mounting the terminal portion is formed between both sides of the upper case and the lower case.

4. The fuse of claim 3, further comprising a cover, wherein the upper case or the lower case has a through hole communicating with the cavity, the cavity is filled with an arc-extinguishing material, and the cover is configured to block the through hole to achieve sealing.

5. The fuse according to claim 3, further comprising a fixing portion, the upper case being provided with a first fixing hole, the terminal portion being provided with a second fixing hole, and the lower case being provided with a third fixing hole, the fixing portion fixing the upper case, the terminal portion and the lower case through the first fixing hole, the second fixing hole and the third fixing hole.

6. The fuse of claim 1, wherein the fuse portion includes a plurality of fuse elements arranged in spaced apart juxtaposition.

7. The fuse of claim 1, wherein a connecting portion is disposed between the fuse portion and the terminal portion, the connecting portion includes a first connecting member and a second connecting member connected to each other, the fuse portion extends to form the first connecting member, and the first connecting member bends toward the terminal portion to extend to form the second connecting member connected to the terminal portion.

8. The fuse of claim 3, wherein the upper case and the lower case are made of a ceramic material.

9. The fuse of claim 3, wherein a limiting portion is disposed between the two avoiding grooves, and a limiting notch is disposed at a lower end of the insertion portion to be engaged with the limiting portion.

10. A fuse as in claim 1, wherein said fusing devices are two and juxtaposed.