Square patch fuse

Abstract

The utility model belongs to the technical field of fuses, and particularly relates to a square patch fuse. The fuse is characterized by comprising a ceramic square tube, a first brass square cap, a second brass square cap and an alloy fuse, a fuse cavity is arranged in the ceramic square tube, and a first patch position and a second patch position are arranged on the outer sides of the two ends of the ceramic square tube; the alloy fuse comprises a fuse main body, and a first patch part and a second patch part which are arranged at the two ends of the fuse main body; the fuse main body is arranged in the fuse cavity, and the first patch part and the second patch part are respectively mounted in the first patch position and the second patch position; the first brass square cap and the second brass square cap are assembled at the two ends of the ceramic square tube respectively. According to the square patch fuse disclosed by the invention, the patch position is arranged on the ceramic shell and the patch part is arranged on the fuse wire, so that the reliability of connection between the fuse wire and the left and right pole caps can be effectively improved through mutual attachment between the patch part and the patch position and the elasticity of the alloy fuse wire.

Description

Technical Field

[0001] This application belongs to the technical field of fuses, and specifically relates to a square patch fuse. Background Art

[0002] Square fuse generally includes a ceramic tube, left and right pole caps, and an alloy fuse wire. The alloy fuse wire is arranged inside the ceramic tube, the left and right pole caps are respectively arranged at both ends of the ceramic tube, and both ends of the fuse wire are electrically connected to the left and right pole caps. When establishing the electrical connection between the fuse wire and the left and right pole caps, the existing fuses generally use conductive adhesive bonding or welding methods, and the connection reliability needs to be improved. Summary of the Utility Model

[0003] In view of this, this application provides a square patch fuse to solve all or part of the technical problems described in the background art of this application.

[0004] The solution provided by this application to solve its technical problems is as follows:

[0005] A square patch fuse, characterized in that it includes a ceramic square tube, a first brass square cap, a second brass square cap, and an alloy fuse wire; a fuse cavity is arranged inside the ceramic square tube, and first and second patch positions are arranged on the outer sides of both ends of the ceramic square tube; the alloy fuse wire includes a fuse wire body and first and second patch parts arranged at both ends of the fuse wire body; the fuse wire body is arranged in the fuse cavity, and the first and second patch parts are respectively mounted into the first and second patch positions; the first brass square cap and the second brass square cap are respectively assembled at both ends of the ceramic square tube.

[0006] Preferably, first and second connection parts are further arranged on the alloy fuse wire; the first connection part is arranged between the fuse wire body and the first patch part; the second connection part is arranged between the fuse wire body and the second patch part.

[0007] Preferably, first and second patch slots are respectively arranged at the opening parts of the first and second patch positions; the first and second patch slots are used to accommodate the thicknesses of the first and second connection parts.

[0008] Preferably, both the first and second patch positions are patch slot structures.

[0009] Preferably, conductive adhesive layers are further arranged on the first brass square cap and the second brass square cap.

[0010] Advantageous Technical Effects:

[0011] The square patch fuse disclosed in this application can effectively improve the reliability of the connection between the fuse wire and the left and right pole caps by setting a patch position on the ceramic housing and a patch part on the fuse wire, through the mutual fitting between the patch part and the patch position and the self-elasticity of the alloy fuse wire.

[0012] The technical solutions and technical effects of this application will be introduced in detail below in conjunction with the specification drawings and specific implementation manners. Brief Description of the Drawings

[0013] Figure 1 : Three-dimensional structure diagram of the square patch fuse;

[0014] Figure 2 : Exploded view of the structure of the square patch fuse;

[0015] Figure 3 : Schematic diagram of the alloy fuse wire of the square patch fuse;

[0016] Figure 4 : Perspective view of the ceramic square shell of the square patch fuse

[0017] Figure 5 : Time-current curve graph;

[0018] Figure 6 : Temperature-current load ratio curve graph;

[0019] Explanation of the icons:

[0020] 10 - Ceramic square tube, 20 - First brass square cap, 30 - Second brass square cap, 40 - Alloy fuse wire;

[0021] 110 - Fuse wire cavity, 120 - First patch position, 130 - Second patch position, 140 - First patch notch, 150 - Second patch notch;

[0022] 410 - Fuse wire body, 420 - First patch part, 430 - Second patch part, 440 - First connection part, 450 - Second connection part. Specific Implementation Manner

[0023] Please refer to Figures 1 to 4 , the square patch fuse disclosed in this application includes a ceramic square tube 10, a first brass square cap 20, a second brass square cap 30, and an alloy fuse wire 40.

[0024] Inside the ceramic square tube 10, there is a fuse cavity 110. On the outer sides of both ends of the ceramic square tube 10, there are a first patch position 120 and a second patch position 130. Both the first patch position 120 and the second patch position 130 are of patch groove structure. At the opening parts of the first patch position 120 and the second patch position 130, there are a first patch groove opening 140 and a second patch groove opening 150 respectively. Both the first patch position 120 and the second patch position 130 are of patch groove structure.

[0025] The alloy fuse 40 includes a fuse main body 410 and a first patch part 420 and a second patch part 430 arranged at both ends of the fuse main body 410. Between the first patch part 420 and the fuse main body 410, there is a first connection part 440. Between the second patch part 430 and the fuse main body 410, there is a second connection part 450.

[0026] The fuse main body 410 is arranged inside the fuse cavity 110. The first patch part 420 and the second patch part 430 are respectively mounted into the first patch position 120 and the second patch position 130. The thicknesses of the first connection part 440 and the second connection part 450 are respectively accommodated in the first patch groove opening 140 and the second patch groove opening 150. The first brass square cap 20 and the second brass square cap 30 are respectively assembled at both ends of the ceramic square tube 10. Between the first brass square cap 20, the second brass square cap 30 and the first connection part 440, the second connection part 450, there is an electrically conductive adhesive layer.

[0027] The fuse main body 410, the first patch part 420, the second patch part 430, the first connection part 440 and the second connection part 450 are integrally formed. Due to the structural elasticity and material elasticity of the alloy fuse 40 itself, a tight mounting and fixing effect can be formed between the patch part and the patch position. Both the connection part and the patch part can form an electrical connection with the brass square cap, thereby effectively improving the reliability of the connection between the fuse and the left and right pole caps and improving the use effect of the fuse.

[0028] Figure 5 This is the time - current test curve of the square patch fuse disclosed in this application. Figure 6 This is the temperature - current load ratio test curve. From Figure 5 and Figure 6 it can be seen that the square patch fuse disclosed in this application has excellent time, current change characteristics and temperature, current load ratio change characteristics.

[0029] The technical solutions and technical effects of this application have been elaborated in detail above in combination with the specification drawings and specific embodiments. It should be noted that those skilled in the art can also develop other embodiments on this basis; any simple deformation and equivalent replacement that do not deviate from the innovative concept of this application are covered by this application and belong to the protection scope of this patent.

Claims

1. A square patch fuse, characterized in that: It includes a ceramic square tube (10), a first brass square cap (20), a second brass square cap (30), and an alloy fuse wire (40); A fuse cavity (110) is provided inside the ceramic square tube (10), and a first patch position (120) and a second patch position (130) are provided on the outer sides of both ends of the ceramic square tube (10); The alloy fuse wire (40) includes a fuse wire main body (410) and a first patch part (420) and a second patch part (430) provided at both ends of the fuse wire main body (410); The fuse wire main body (410) is arranged in the fuse cavity (110), and the first patch part (420) and the second patch part (430) are respectively mounted in the first patch position (120) and the second patch position (130); The first brass square cap (20) and the second brass square cap (30) are respectively assembled at both ends of the ceramic square tube (10).

2. The square patch fuse according to claim 1, characterized in that: The alloy fuse wire (40) is further provided with a first connection part (440) and a second connection part (450); The first connection part (440) is arranged between the fuse wire main body (410) and the first patch part (420); The second connection part (450) is arranged between the fuse wire main body (410) and the second patch part (430).

3. The square patch fuse according to claim 2, characterized in that: First patch slots (140) and second patch slots (150) are respectively provided at the opening parts of the first patch position (120) and the second patch position (130); The first patch slot (140) and the second patch slot (150) are used to accommodate the thicknesses of the first connection part (440) and the second connection part (450).

4. The square patch fuse according to claim 1, wherein: Both the first patch position (120) and the second patch position (130) are patch slot structures.

5. The square patch fuse according to claim 1, wherein: The first brass square cap (20) and the second brass square cap (30) are further provided with conductive adhesive layers.

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