A high i2t and stable breaking capacity chip fuse

Abstract

The utility model discloses a high I 2 T and the fuse of stable breaking capacity, including porcelain pipe, fuse element, pole cap and filler, the fuse element is worn and is installed in the porcelain pipe, and the both ends cover of porcelain pipe is equipped with the pole cap, and the fuse element is connected to the inside of pole cap through tin soldering, the inside of porcelain pipe is filled with the filler for arc extinguishing, the accommodating space of wearing and installing fuse element is arranged to the porcelain pipe, one end of porcelain pipe is provided with the outer eight inclined chamfer that communicates with the accommodating space, and the outer eight inclined chamfer decreases from inside to outside aperture, and is used for the one end of fast positioning centering fuse element, the cross slot for fixing the other end of centering positioning fuse element is seted up to the other end of porcelain pipe. 2 T.

Description

Technical Field

[0001] This utility model relates to the field of fuse technology, and in particular to a high I 2 T-type surface mount fuses with stable breaking capacity. Background Technology

[0002] Existing fuse products such as Figure 1 As shown, it consists of a ceramic tube, an electrode cap, and a fusible element. The ceramic tube is filled with quartz sand, and the fusible element has a sheet-like structure, as shown in the figure. Figure 2 As shown, existing fuse elements have a simple structure and can no longer improve product performance. 2 The T-value indicates that the structural size of the fusible element is smaller than the inner diameter of the ceramic tube. After the fusible element is embedded inside the ceramic tube, it cannot be fixed in position. During the production process, the position can swing at will. When the position of the fusible element is not centered, either to the left or right, it causes one side to have too much quartz sand for arc extinguishing material and the other side to have too little. The side with less arc extinguishing material has insufficient arc extinguishing material, resulting in an excessively long arc time, an excessively large arc, and a reduced breaking capacity.

[0003] In addition, fuses need to have a stable breaking capacity. When the amount of solder material is insufficient or the fuse element cannot be centered, the connection between the fuse element and the left and right caps will have a false solder joint or a weak solder joint, resulting in an unreliable weld.

[0004] Based on the above defects and shortcomings, it is necessary to improve the existing technology and design a high-I 2 T-type surface mount fuses with stable breaking capacity. Utility Model Content

[0005] The main technical problem solved by this utility model is to provide a high I 2 The surface mount fuse with stable breaking capacity allows for easy centering of the fusible element and perfect embedding into the weldment. This ensures even distribution of the internal quartz sand, thereby improving and stabilizing the breaking capacity, enhancing the weldability of the product, and ultimately improving product reliability. 2 T.

[0006] To solve the above-mentioned technical problems, one technical solution adopted by this utility model is: to provide a high I 2 T and stable breaking capacity surface mount fuse, this type of high I 2The surface mount fuse with stable breaking capacity includes a ceramic tube, a fusible element, electrode caps, and filler. The fusible element is installed inside the ceramic tube, and electrode caps are installed at both ends of the ceramic tube. The fusible element is soldered to the inside of the electrode caps. The inside of the ceramic tube is filled with filler for arc extinguishing. The ceramic tube has a space for accommodating the fusible element. One end of the ceramic tube has an outward octagonal chamfer that communicates with the accommodating space. The diameter of the outward octagonal chamfer decreases from the inside to the outside to quickly position one end of the fusible element in the center. The other end of the ceramic tube has a cross-shaped groove for fixing the other end of the centered fusible element.

[0007] Preferably, the fuse element is widened at both ends, with one end of the fuse element being a convex triangular shape that facilitates contact and conduction with the electrode cap; the other end of the fuse element is designed with a mounting part that facilitates insertion into the cross-shaped slot, and a rectangular protrusion is provided on the outside of the mounting part that can embed the solder inside the electrode cap.

[0008] Preferably, the middle part of the fusible element is coated with a coating to improve product I. 2 The breaking capacity effect point of T, wherein the material of the effect point is tin.

[0009] Preferably, the ceramic tube is a square tube, and both ends of the square tube are provided with stepped blocks to facilitate quick installation of the electrode cap.

[0010] Preferably, the filler is quartz sand.

[0011] Compared with the prior art, the beneficial effects of this utility model are: One end of the ceramic tube has an outward octagonal chamfer, and the other end has a cross-shaped groove, which facilitates the centering of the fusion element and makes the internal quartz sand filling uniform from left to right, so as to improve and stabilize the overall breaking capacity. The fuse element has an effective point coated in the middle to improve product performance. 2 T; One end of the fuse element is convex triangular, and the other end is designed with a mounting part. A rectangular protrusion is also provided on the outside of the mounting part to facilitate centering and perfect embedding with the workpiece, so as to improve the overall welding reliability of the product. Attached Figure Description

[0012] Figure 1 This is a structural diagram of an existing fuse product.

[0013] Figure 2 This is a schematic diagram of the structure of an existing fuse element.

[0014] Figure 3 As a high I 2 A schematic diagram of a surface mount fuse with stable breaking capacity.

[0015] Figure 4 As a high I 2A partial structural diagram of a surface mount fuse with T-shaped breaking capacity and stable breaking capacity.

[0016] Figure 5 for Figure 4 Another perspective on the structure.

[0017] Figure 6 As a high I 2 A schematic diagram of the fusing element structure of a surface mount fuse with stable breaking capacity.

[0018] Among them, 1. ceramic tube, 10. accommodating space, 11. outward octagonal chamfer, 12. cross-shaped slot, 13. stepped block, 2. fusible element, 20. effect point, 21. outward convex triangle, 22. mounting part, 23. rectangular protrusion, 3. pole cap, 4. filler. Detailed Implementation

[0019] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0020] Please see Figures 3 to 6 The embodiments of this utility model include: A high I 2 T and stable breaking capacity surface mount fuse, this type of high I 2 The surface mount fuse with stable breaking capacity includes a ceramic tube 1, a fusing element 2, an electrode cap 3, and a filler 4. The fusing element 2 is installed inside the ceramic tube 1, and the electrode caps 3 are installed at both ends of the ceramic tube 1. The fusing element 2 is soldered to the inside of the electrode caps 3. The inside of the ceramic tube 1 is filled with a filler 4 for arc extinguishing, and the filler 4 is made of quartz sand.

[0021] The ceramic tube 1 is a square tube with stepped blocks 13 at both ends for quick installation of the electrode cap 3. The ceramic tube 1 has a receiving space 10 for inserting the fusible element 2. One end of the ceramic tube 1 has an outward octagonal chamfer 11 that communicates with the receiving space 10. The diameter of the outward octagonal chamfer 11 decreases from the inside to the outside, which is used to quickly position one end of the fusible element 2. The other end of the ceramic tube 1 has a cross groove 12 for fixing the other end of the fusible element 2.

[0022] The fuse element 2 is widened at both ends. One end of the fuse element 2 is a convex triangular shape 21 that facilitates contact and conduction with the electrode cap 3, allowing for quick centering and positioning within the outwardly chamfered corner 11. The other end of the fuse element 2 is designed with a mounting part 22 that facilitates insertion into the cross-shaped slot 12 for centering. A rectangular protrusion 23 is also provided on the outer side of the mounting part 22 to embed solder within the electrode cap 3, thereby improving the overall soldering reliability of the product. The middle part of the fuse element 2 is coated with a coating to improve product reliability.2 The effect point 20 of the breaking capacity of T is made of tin.

[0023] This utility model provides a high I 2 This surface-mount fuse boasts stable breaking capacity, a simple structure, and ingenious design. It allows for easy centering of the fusible element while perfectly embedding it into the weldment. The internal quartz sand filling is evenly distributed, thus improving and stabilizing the breaking capacity, enhancing the product's weldability, and ultimately improving product reliability. 2 T.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high I 2 A surface mount fuse with stable breaking capacity includes a ceramic tube (1), a fusing element (2), a cap (3), and a filler (4). The fusing element (2) is installed inside the ceramic tube (1), and caps (3) are installed at both ends of the ceramic tube (1). The fusing element (2) is soldered to the inside of the caps (3). The ceramic tube (1) is filled with filler (4) for arc extinguishing. Its characteristics are: The ceramic tube (1) is provided with a receiving space (10) for inserting the fusible element (2). One end of the ceramic tube (1) is provided with an outward octagonal chamfer (11) that communicates with the receiving space (10). The diameter of the outward octagonal chamfer (11) decreases from the inside to the outside. The other end of the ceramic tube (1) is provided with a cross groove (12) for fixing the other end of the centered fusible element (2).

2. A high I-type air purifier according to claim 1 2 A surface mount fuse with stable breaking capacity, characterized in that: The fuse element (2) is widened at both ends. One end of the fuse element (2) is a convex triangular shape (21) that facilitates contact and conduction with the electrode cap (3). The other end of the fuse element (2) is designed with a mounting part (22) that facilitates insertion into the cross slot (12). The outer side of the mounting part (22) is also provided with a rectangular protrusion (23) that can be embedded in the solder inside the electrode cap.

3. A high I-type air purifier according to claim 1 2 A surface mount fuse with stable breaking capacity, characterized in that: The fuse element (2) is coated in the middle with a coating to improve product I 2 The effect point (20) of the breaking capacity of T is made of tin.

4. A high I-type air purifier according to claim 1 2 A surface mount fuse with stable breaking capacity, characterized in that: The ceramic tube (1) is a square tube, and both ends of the square tube are provided with stepped blocks (13) to facilitate the quick installation of the pole cap (3).

5. A high I-type according to claim 1 2 A surface mount fuse with stable breaking capacity, characterized in that: The filler (4) is made of quartz sand.

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