Fuse wire of high-voltage fuse and fuse

Abstract

The utility model belongs to the technical field of circuit protection, and particularly relates to a fuse wire of a high-voltage fuse and a fuse, the fuse wire of the high-voltage fuse comprises the fuse wire, the fuse wire comprises a first fixing part and a second fixing part, the first fixing part and the second fixing part are arranged on the same straight line at intervals, and the first fixing part and the second fixing part are arranged on the same straight line at intervals. The first fixing part and the second fixing part are arranged at intervals, a melt body is arranged between the first fixing part and the second fixing part, the first fixing part and the second fixing part are connected with the melt body through connecting parts, and in an extreme environment, the first fixing part, the second fixing part and the melt body are arranged at intervals; the gaps among the first fixing part, the second fixing part and the melt provide a space for thermal expansion and cold contraction, so that the fuse is prevented from being broken due to thermal expansion and cold contraction, and then the first fixing part, the melt and the second fixing part are connected through the connecting parts among the first fixing part, the second fixing part and the melt to form a conductive whole.

Description

Technical Field

[0001] This utility model belongs to the field of circuit protection technology, and in particular relates to a high-voltage fuse and a fuse wire. Background Technology

[0002] A fuse is an electrical device that breaks the circuit by melting a fusible element when the current exceeds a specified value. Fuses are also known as circuit breakers.

[0003] A fuse is a circuit protector that breaks the circuit by melting a fusible element with the heat generated when the current exceeds a specified value for a certain period of time.

[0004] Fuses are widely used in high and low voltage power distribution systems, control systems, and electrical equipment as short-circuit and overcurrent protectors, and are one of the most commonly used protective devices.

[0005] The fusible element is the core component of a fuse and is also the part that protects the circuit. It is usually a metal point set on the fuse wire. When the current is overloaded, the metal point melts, and the melted metal melts the fuse wire, thereby disconnecting the circuit and protecting it.

[0006] The existing fuse is a single metal wire. Under extreme temperature conditions, the metal wire may break due to thermal expansion and contraction, thus causing the circuit to disconnect automatically. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by designing a high-voltage fuse based on the inventor's own practical experience and actual usage. This design aims to solve the technical problem of automatic melt disconnection under extreme temperature conditions.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A high-voltage fuse includes a fuse wire comprising a first fixing part and a second fixing part, the first fixing part and the second fixing part being spaced apart on the same straight line, a fusible element being disposed between the first fixing part and the second fixing part, and the first fixing part and the second fixing part being connected to the fusible element by a connecting part.

[0010] Furthermore, the melt is in the form of sheets and is spaced apart in multiple pieces, with adjacent melts connected by the connecting portion.

[0011] Furthermore, the connecting part is arched, and the highest point of the connecting part protrudes from the surface of the fuse;

[0012] Alternatively, the connecting part may be S-shaped, and the connecting part and the fuse may be arranged at the same horizontal level.

[0013] Alternatively, the connecting portion may be diagonal, and the connecting portion connects two adjacent diagonals of the melt;

[0014] Alternatively, the connecting part can be "X" shaped, with the connecting part intersecting and connecting the diagonals of two adjacent melts.

[0015] Furthermore, two limiting angles are symmetrically provided at the end of the first fixing part away from the second fixing part, and the limiting angles protrude from the first fixing part.

[0016] Furthermore, the limiting angle is T-shaped;

[0017] Alternatively, the limiting angle may be a semi-circular protrusion;

[0018] Alternatively, the limiting angle may be a stepped protrusion.

[0019] Furthermore, the end of the second fixing part away from the first fixing part is provided with a protruding corner, and the protruding corner is integrally formed with the second fixing part.

[0020] Furthermore, the convex corner is arc-shaped;

[0021] Or the convex corner is trapezoidal in shape;

[0022] Alternatively, the convex corner can be a planar circle, with the center of the convex corner perpendicularly connected to the end of the second fixing part.

[0023] Furthermore, the first fixing part, the second fixing part, the melt, and the connecting part are all integrally formed.

[0024] Furthermore, the first fixing part, the second fixing part, the melt, and the connecting part are integrally formed by die stamping;

[0025] Alternatively, the first fixing part, the second fixing part, the melt, and the connecting part can be integrally formed by laser cutting.

[0026] This application also discloses a high-voltage fuse, including a ceramic tube body having a through mounting hole. The aforementioned fuse wire is disposed in the mounting hole. The diameter of the fuse wire is A, the diameter of the mounting hole is B, the diameter of the ceramic tube body is C, and the distance between the two farthest ends of the limiting angle is D. The diameter A of the fuse wire, the diameter B of the mounting hole, the diameter C of the ceramic tube body, and the distance D between the two farthest ends of the limiting angle satisfy the following relationship: A < B < D < C.

[0027] The beneficial effect of this utility model is that it provides a high-voltage fuse, which includes a sheet-shaped fuse. The fuse includes a first fixing part and a second fixing part, which are spaced apart on the same straight line. A fusible element is disposed between the first fixing part and the second fixing part. The first fixing part and the second fixing part are connected to the fusible element through connecting parts. In extreme environments, since the first fixing part, the second fixing part and the fusible element are spaced apart, the gap between them provides space for thermal expansion and contraction, thereby preventing the fuse from breaking due to thermal expansion and contraction. Subsequently, the connecting parts between the first fixing part, the second fixing part and the fusible element connect the first fixing part, the fusible element and the second fixing part to form a conductive whole. Attached Figure Description

[0028] The following will refer to the appendix. Figures 1 to 13 This section describes the features, advantages, and technical effects of exemplary embodiments of the present invention.

[0029] Figure 1 This is a schematic diagram of the overall structure of the fuse in this utility model;

[0030] Figure 2 This is a front view of Embodiment 3 of the present invention.

[0031] Figure 3 for Figure 2 A magnified view of part A;

[0032] Figure 4 for Figure 2 A magnified view of part B;

[0033] Figure 5 for Figure 2 A magnified view of part of C;

[0034] Figure 6 This is a partial enlarged view of the structure of Embodiment 2 of this utility model;

[0035] Figure 7 This is a partial enlarged view of the structure of Embodiment 4 of this utility model;

[0036] Figure 8 This is a partial enlarged view of the structure of Embodiment 5 of this utility model;

[0037] Figure 9 This is a partial enlarged view of the structure of Embodiment Six of this utility model;

[0038] Figure 10 This is a partial enlarged view of the structure of Embodiment Seven of this utility model;

[0039] Figure 11 This is a partial enlarged view of the structure of Embodiment 8 of this utility model;

[0040] Figure 12 This is a top view of the structure of Embodiment 8 of this utility model;

[0041] Figure 13 This is a cross-sectional view of the overall structure of Embodiment 10 of this utility model.

[0042] In the diagram: 1. Fusion wire; 2. Ceramic tube;

[0043] 11. First fixing part; 12. Second fixing part; 13. Fuse; 14. Connecting part;

[0044] 111. Limiting angle;

[0045] 121. Convex angle;

[0046] 21. Mounting through hole; 22. Metal point. Detailed Implementation

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0048] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0049] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0050] The following is in conjunction with the appendix Figures 1 to 13 The present invention will be described in further detail, but this is not intended to limit the scope of the present invention.

[0051] Example 1

[0052] This embodiment discloses a high-voltage fuse, including a sheet-shaped fuse 1. The fuse 1 includes a first fixing part 11 and a second fixing part 12. The first fixing part 11 and the second fixing part 12 are spaced apart on the same straight line. A molten material is disposed between the first fixing part 11 and the second fixing part 12. The first fixing part 11 and the second fixing part 12 are connected to the molten material through a connecting part 14.

[0053] In extreme environments, since the first fixing part 11, the second fixing part 12 and the melt are all spaced apart, the gap between the first fixing part 11, the second fixing part 12 and the melt provides space for thermal expansion and contraction, thereby preventing the fuse 1 from breaking due to thermal expansion and contraction. Then, the connecting part 14 between the first fixing part 11, the second fixing part 12 and the melt connects the first fixing part 11, the melt and the second fixing part 12 to form a conductive whole.

[0054] Specifically, the melt can be made of pure copper, copper-tin plated, copper-silver plated, silver-copper alloy-tin plated, or a composite strip of multiple metal alloys to improve its electrical conductivity and heat resistance.

[0055] In this embodiment, multiple melt intervals are provided, and two adjacent melts are connected by a connecting part 14.

[0056] The arrangement of multiple molten elements ensures that the length of the fuse 1 can be increased. Specifically, the length of the fuse 1 can be controlled by adjusting the number of molten elements, and the multiple molten elements are connected into a whole by the connecting part 14, so that it has electrical conductivity.

[0057] In this embodiment, the connecting part 14 is arched, and the highest point of the connecting part 14 protrudes from the surface of the fuse 1.

[0058] Specifically, the arched design of the connecting part 14 can enhance the overall strength of the fuse 1. At the same time, when the melt expands and contracts under extreme temperature difference conditions, the arched connecting part 14 can provide a buffer space for the melt. Furthermore, the arched fuse 1 is not easy to break when it deforms, thus improving the structural stability of the fuse 1.

[0059] On the other hand, a metal point 22 with a low melting point is usually required in the fuse 1, and the metal point 22 is set at the connecting part 14. Since the connecting part 14 is designed in an arch shape, the metal point 22 can be connected to the bent part of the connecting part 14. The connecting part 14 can provide a better attachment point for the metal point 22, making it easier for the metal point 22 to attach.

[0060] In this embodiment, two limiting angles 111 are symmetrically provided at the end of the first fixing part 11 away from the second fixing part 12, and the limiting angles 111 protrude from the first fixing part 11.

[0061] Specifically, the limiting angle 111 is set on both sides of the first fixing part 11 along the width of the first fixing part 11. When installing the fuse 1, the fuse 1 needs to be placed in the fuse tube. The setting of the limiting angle 111 can prevent the entire fuse 1 from falling into the fuse tube. The position of the fuse 1 is limited by the limiting angle 111.

[0062] In this embodiment, the limiting angle 111 is "T" shaped;

[0063] Specifically, the setting of the limiting angle 111 can enhance the stability of the fuse 1 installation and prevent the fuse 1 from shifting or loosening during installation or use. The "T"-shaped limiting angle 111 has a simple structure and is easy to process, and can more effectively limit the movement of the fuse 1.

[0064] Furthermore, the T-shaped limiting angle 111 can increase the contact area, thereby improving the stability of the connection.

[0065] In this embodiment, the end of the second fixing part 12 away from the first fixing part 11 is provided with a protruding corner 121, and the protruding corner 121 is integrally provided with the second fixing part 12.

[0066] Specifically, when installing the fuse, the second fixing part 12 needs to be placed inside the fuse tube first. The protruding corner 121 at the end of the second fixing part 12 facilitates its insertion. After the fuse 1 is installed, the second fixing part 12 needs to be welded to the fuse tube at the other end to fix the fuse 1. The protruding corner 121 can increase the welding area when welding with the fuse tube and improve the stability after welding.

[0067] In this embodiment, the convex angle 121 is arc-shaped;

[0068] Specifically, when installing fuse 1, the arc-shaped convex corner 121 can better ensure that fuse 1 falls into the fuse tube. Even if there is a deviation when installing fuse 1, the arc-shaped convex corner 121 can still ensure that fuse 1 falls into the correct position.

[0069] In this embodiment, the first fixing part 11, the second fixing part 12, the melt and the connecting part 14 are all integrally formed.

[0070] Specifically, integrating the first fixing part 11, the second fixing part 12, the melt and the connecting part 14 into one piece can increase the structural strength of the fuse 1 and prevent the melt from breaking due to vibration or other shaking.

[0071] In this embodiment, the first fixing part 11, the second fixing part 12, the melt and the connecting part 14 are integrally formed by die stamping;

[0072] Specifically, the integrated die-stamping molding of the fused wire 1 is suitable for mass production and can ensure product consistency and precision.

[0073] Among them, die stamping integral molding refers to stamping the material with a die so that the first fixing part 11, the second fixing part 12, the melt and the connecting part 14 are completed in one molding process, thereby ensuring the connection strength and integrity between the components.

[0074] Example 2

[0075] In this embodiment, unlike in Embodiment 1, the connecting part 14 is "S" shaped and is arranged at the same horizontal level as the fuse 1.

[0076] Specifically, as shown in the figure, the connection 14 between the two fuses 1 is "S" shaped. When the fuse 1 undergoes thermal expansion and contraction, the "S" shaped connection 14 provides deformation space for the fuses 1 on both sides, preventing the fuses 1 from being squeezed or contracted and thus breaking.

[0077] The other structures are the same as in Embodiment 1, and will not be described in detail in this embodiment.

[0078] Example 3

[0079] In this embodiment, unlike in Embodiment 1, the connecting part 14 is a diagonal line, and the connecting part 14 connects the diagonals of two adjacent melts.

[0080] Specifically, as shown in the figure, the connecting part 14 between the two fuses 1 is diagonally connected to the opposite corners of the two fuses 1. When the fuses 1 undergo thermal expansion and contraction, the fuses 1 on both sides can contract and extend towards the connecting part 14, and the connection between the two fuses 1 is always maintained through the connecting part 14.

[0081] The other structures are the same as in Embodiment 1, and will not be described in detail in this embodiment.

[0082] Example 4

[0083] In this embodiment, unlike in Embodiment 1, the connecting part 14 is "X" shaped, and the connecting part 14 crosses and connects the opposite corners of two adjacent melts.

[0084] Specifically, as shown in the figure, the connection part 14 between the two fuses 1 is in the shape of an "X". The connection part 14 cross-connects the two adjacent fuses 1, and the connection part 14 has a center point. When the metal point 22 is set, the center point can better attract the metal point 22 and prevent the metal point 22 from falling off and causing the fuse 1 to lose its circuit protection function.

[0085] The other structures are the same as in Embodiment 1, and will not be described in detail in this embodiment.

[0086] Example 5

[0087] In this embodiment, the difference from Embodiment 1 is that the limiting angle 111 is a semi-circular protrusion.

[0088] Specifically, as shown in the figure, the semi-circular limiting angle 111 can reduce stress concentration, and the semi-circular protrusion reduces friction with the fuse through its smooth surface, thus reducing wear.

[0089] The other structures are the same as in Embodiment 1, and will not be described in detail in this embodiment.

[0090] Example 6

[0091] In this embodiment, the difference from that in embodiment one is that the limiting angle 111 is a stepped boss.

[0092] Specifically, as shown in the figure, the stepped bosses facilitate installation and positioning, and the multi-level structure provides more installation positions, making it easy to adjust and fix.

[0093] The other structures are the same as in Embodiment 1, and will not be described in detail in this embodiment.

[0094] Example 7

[0095] In this embodiment, the difference from Embodiment 1 is that the convex angle 121 is trapezoidal in shape.

[0096] Specifically, as shown in the figure, the protruding corner 121 is provided at the end of the second fixing part 12. When installing the fuse 1, the fuse 1 needs to be placed inside the fuse tube. Then, the end of the second fixing part 12 is soldered to the fuse tube by soldering. The trapezoidal protruding corner 121 can easily guide the second fixing part 12 into the fuse tube when installing the fuse 1.

[0097] The other structures are the same as in Embodiment 1, and will not be described in detail in this embodiment.

[0098] Example 8

[0099] In this embodiment, unlike in Embodiment 1, the convex corner 121 is a planar circle, and the center of the convex corner 121 is perpendicularly connected to the end of the second fixing part 12.

[0100] Specifically, as shown in the figure, since the second fixing part 12 and the fuse need to be soldered together, a planar circular protrusion 121 is provided on the second fixing part 12. The planar circular protrusion 121 has a large area, which can be better soldered during the soldering process, thereby improving the connection stability between the fuse 1 and the fuse.

[0101] The other structures are the same as in Embodiment 1, and will not be described in detail in this embodiment.

[0102] Example 9

[0103] In this embodiment, unlike in Embodiment 1, the first fixing part 11, the second fixing part 12, the melt and the connecting part 14 are integrally formed by laser cutting.

[0104] Specifically, laser cutting and one-piece molding are suitable for scenarios with high precision requirements and can achieve more complex structural designs.

[0105] Laser cutting integral molding uses laser cutting technology to precisely cut materials, allowing each component to be formed on the same material, further improving the precision and consistency of the molding process.

[0106] The other structures are the same as in Embodiment 1, and will not be described in detail in this embodiment.

[0107] Example 10

[0108] This application also discloses a high-voltage fuse, including a ceramic tube body 2, the ceramic tube body 2 having a through mounting hole 21, the aforementioned fuse 1 being disposed in the mounting hole 21, the diameter of the fuse 1 being A, the diameter of the mounting hole 21 being B, the diameter of the ceramic tube body 2 being C, and the distance between the farthest ends of the limiting angle 111 being D. The diameter A of the fuse 1, the diameter B of the mounting hole 21, the diameter C of the ceramic tube body 2, and the distance D between the farthest ends of the limiting angle 111 satisfy the following relationship: A < B < D < C.

[0109] The ceramic tube body 2 has an insulating effect, which can prevent the internal fuse 1 from contacting external objects and causing electric shock or short circuit. At the same time, the ceramic tube body 2 can also protect the fuse 1 from breakage caused by the external environment. During installation, the fuse 1 is placed in the mounting through hole 21. The diameter of the fuse 1 is smaller than the diameter of the mounting through hole 21, so that the fuse 1 can be smoothly installed into the mounting through hole 21. The diameter of the limiting angle 111 is larger than the diameter of the mounting through hole 21 and smaller than the diameter of the ceramic tube body 2. Therefore, after the fuse 1 is installed into the mounting through hole 21, the limiting angle 111 abuts against the end of the mounting through hole 21, thereby restricting the position of the fuse 1.

[0110] After the fuse 1 is placed in the mounting through hole 21, the end of the mounting through hole 21 needs to be soldered. After the fuse 1 is limited by the limiting angle 111, one end of the second fixing part 12 is soldered. At this time, the soldering operation will not bring the fuse 1 out of the mounting through hole 21 due to the limiting angle.

[0111] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0112] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A high-voltage fuse, characterized in that: The device includes a fuse, which includes a first fixing part and a second fixing part. The first fixing part and the second fixing part are spaced apart on the same straight line. A molten material is disposed between the first fixing part and the second fixing part. The first fixing part and the second fixing part are connected to the molten material through a connecting part.

2. The high-voltage fuse according to claim 1, characterized in that: The melt is in the form of sheets and is spaced apart in multiples, with adjacent melts connected by the connecting part.

3. The high-voltage fuse according to claim 1, characterized in that: The connecting part is arched, and the highest point of the connecting part protrudes from the surface of the fuse. Alternatively, the connecting part may be "S" shaped, and the connecting part and the fuse may be arranged at the same horizontal level. Alternatively, the connecting portion may be diagonal, and the connecting portion connects two adjacent diagonals of the melt; Alternatively, the connecting part can be "X" shaped, with the connecting part intersecting and connecting the opposite corners of two adjacent melts.

4. The high-voltage fuse according to claim 1, characterized in that: The end of the first fixing part away from the second fixing part is symmetrically provided with two limiting angles, and the limiting angles protrude from the first fixing part.

5. The high-voltage fuse according to claim 4, characterized in that: The limiting angle is "T" shaped; Alternatively, the limiting angle may be a semi-circular protrusion; Alternatively, the limiting angle may be a stepped protrusion.

6. The high-voltage fuse according to claim 1, characterized in that: The end of the second fixing part away from the first fixing part is provided with a protruding corner, and the protruding corner is integrally formed with the second fixing part.

7. The high-voltage fuse according to claim 6, characterized in that: The convex corner is rounded; Or the convex corner is trapezoidal in shape; Alternatively, the convex corner can be a planar circle, with the center of the convex corner perpendicularly connected to the end of the second fixing part.

8. The high-voltage fuse according to claim 1, characterized in that: The first fixing part, the second fixing part, the melt and the connecting part are all integrally formed.

9. The high-voltage fuse according to claim 8, characterized in that: The first fixing part, the second fixing part, the melt, and the connecting part are integrally formed by die stamping. Alternatively, the first fixing part, the second fixing part, the melt, and the connecting part can be integrally formed by laser cutting.

10. A high-voltage fuse, characterized in that: The device includes a ceramic tube body having a through mounting hole. The fuse of any one of claims 1-9 is disposed in the mounting hole. The diameter of the fuse is A, the diameter of the mounting hole is B, the diameter of the ceramic tube body is C, and the distance between the two farthest ends of the limiting angle is D. The diameter A of the fuse, the diameter B of the mounting hole, the diameter C of the ceramic tube body, and the distance D between the two farthest ends of the limiting angle satisfy the following relationship: A < B < D < C.

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