A soft-link fuse

Abstract

The present application relates to the technical field of fuse, in particular to a soft connection type fuse; comprising a fuse tube, and two terminals respectively arranged at two ends of the fuse tube; both ends of the fuse tube are provided with connecting plates, and one or more fuses are arranged between the two connecting plates; the connecting plates are connected with the terminals through one or more flexible connecting pieces; by adopting one or more flexible connecting pieces to connect the terminals with the connecting plates, the vibration generated during the transportation and operation of the equipment can be filtered through the flexible connecting pieces without reducing the performance of the fuse, and the mechanical damage to the terminals and the risk of rupture of the fuse in the fuse can be reduced; and since the flexible connecting pieces are used to connect the terminals with the connecting plates, the installation angle of the terminals can be adjusted according to the use requirements of the customers, which is helpful to expand the application range of the fuse.

Description

Technical Field

[0001] This invention relates to the field of fuse technology, and specifically to a flexible fuse. Background Technology

[0002] A fuse, commonly known as a "fuse", is an overcurrent protection device widely used in power distribution and control systems to provide short-circuit or overload protection.

[0003] Currently, the mainstream hot-melt fuses on the market are mainly composed of an insulating tube, terminals, a cover plate, a fusible element, and an arc-extinguishing medium. The terminals of the fuse are usually fastened to the busbar with screws, and the terminal structure of the fuse needs to be manufactured according to the customer's usage requirements.

[0004] However, the existing connection method between fuse terminals and fuse elements cannot reduce the mechanical damage to terminals caused by vibration during transportation and the risk of fuse element breakage without reducing product performance. At the same time, it cannot meet the installation requirements at different angles. Summary of the Invention

[0005] The purpose of this invention is to solve the technical problem that the existing connection method between the fuse terminal and the fuse element cannot reduce the mechanical damage to the terminal caused by vibration during transportation and the risk of breakage of the fuse element in the fuse without reducing product performance. At the same time, it cannot meet the technical requirements of installation at different angles. Therefore, this invention provides a flexible connection fuse.

[0006] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: A flexible fuse includes a fuse tube and two terminals respectively located at both ends of the fuse tube; each end of the fuse tube is provided with a connecting plate, and one or more fuse elements are provided between the two connecting plates; The connecting plate is connected to the terminal via one or more flexible connectors.

[0007] Furthermore, the flexible connector includes a conductor and an insulating layer disposed on the outside of the conductor.

[0008] Furthermore, the conductor is any one of soft copper wire, braided copper strip, copper-aluminum composite braided strip, or nano-coated copper wire.

[0009] Furthermore, the copper in the soft copper wire, braided copper strip, copper-aluminum composite braided strip, or nano-coated copper wire is all made of pure copper, preferably T2 pure copper.

[0010] Furthermore, both ends of the flexible connector are laser welded to the connecting plate and the terminal, respectively.

[0011] Furthermore, the end of the fusion tube is provided with a cover plate located outside the connecting plate; The cover plate has through holes through which flexible connectors can pass.

[0012] Furthermore, positioning grooves are provided at both ends of the fusion tube; The connecting plate is fixed in the positioning groove by a cover plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The flexible-connector fuse provided by this invention connects the terminals to the connecting plate using one or more flexible connectors. This allows for the filtering of vibrations generated during equipment transportation without compromising fuse performance, reducing mechanical damage to the terminals and the risk of fuse element breakage. Furthermore, the use of flexible connectors allows for adjustment of the terminal installation angle according to customer needs, thus expanding the fuse's applicability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure along section line AA; Figure 3 This is a schematic diagram of the exploded structure of Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the flexible connector and the connecting plate in a separated state in Embodiment 1 of the present invention.

[0015] Explanation of reference numerals in the attached drawings: 1-fusible tube, 2-terminal, 3-connecting plate, 4-cover plate, 5-flexible connector; 6-through hole, 7-fusible material. Detailed Implementation

[0016] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Example 1 like Figure 1 , Figure 2 and Figure 3As shown, a flexible fuse includes a fuse tube 1 and two terminals 2 respectively located at both ends of the fuse tube 1; both ends of the fuse tube 1 are provided with connecting plates 3, and the ends of multiple fuse elements 7 located inside the fuse tube 1 are respectively welded to the two connecting plates 3; one or more fuse elements are provided between the two connecting plates 3; the connecting plates 3 are connected to the terminals 2 through multiple flexible connectors 5.

[0018] In traditional products, terminal 2 is directly connected to the fusible element, which is inconvenient to install in equipment, easily damaged during transportation, and prone to breakage at narrow points during transport. The root cause is insufficient flatness of terminal 2. Considering product performance and industry experience, using a flexible connector 5 to connect terminal 2 and the fusible element can avoid problems such as insufficient flatness, mechanical damage to the fuse terminals caused by vibration during transportation or startup of the filtration equipment, and the risk of breakage of the fusible element inside the fuse. At the same time, it can improve installation efficiency.

[0019] In this embodiment, using multiple flexible connectors 5 can improve the current carrying capacity, heat dissipation capacity, and service life of the fuse.

[0020] The flexible connector 5 includes a conductor and an insulating layer disposed on the outside of the conductor. To further improve the vibration resistance during transportation, the conductor can be made of a highly flexible material, such as any one of soft copper wire, braided copper strip, copper-aluminum composite braided strip, or nano-coated copper wire. Such materials can not only effectively buffer and absorb vibration, reducing the impact of transportation vibration on the product, but also reduce stress concentration at bending points, avoiding structural damage, while improving the current carrying capacity of the product and ensuring product performance.

[0021] Among them, the copper in soft copper wire, braided copper strip, copper-aluminum composite braided strip or nano-coated copper wire is all made of pure copper, preferably T2 pure copper; the purity and conductivity of pure copper are higher than those of traditional materials (such as brass), which can ensure that the installation problems of customers at different angles are solved without reducing the performance of the product.

[0022] To improve mechanical strength and thus enhance the vibration resistance of the fuse, the welding process needs to reduce the heat-affected zone and improve the consistency of the weld points. Therefore, both ends of the flexible connector 5 are laser welded to the connecting plate 3 and the terminal 2, respectively.

[0023] like Figure 3 and Figure 4 As shown, the end of the fusion tube 1 is provided with a cover plate 4 located outside the connecting plate 3; the cover plate 4 is provided with a through hole 6 through which the flexible connector 5 can pass.

[0024] like Figure 2 As shown, positioning grooves are provided at both ends of the fusion tube 1; the connecting plate 3 is fixed in the positioning groove by the cover plate 4.

[0025] Example 2 The difference between Example 2 and Example 1 is that the connecting plate 3 is connected to the terminal 2 through a flexible connector 5.

[0026] Example 3 The difference between Example 3 and Example 1 is that, since the parallel connection method allows for more uniform stress distribution on each flexible connector 5, multiple flexible connectors 5 can be arranged in parallel. This parallel arrangement not only helps improve the stability between the terminal and the connecting plate but also optimizes the heat dissipation effect among the multiple flexible connectors 5, thereby extending the service life of the fuse and ensuring that product performance is not affected.

[0027] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A flexible fuse, comprising a fuse tube (1) and two terminals (2) respectively disposed at both ends of the fuse tube (1); both ends of the fuse tube (1) are provided with connecting plates (3), and one or more fusible elements are disposed between the two connecting plates (3); characterized in that: The connecting plate (3) is connected to the terminal (2) via at least one flexible connector (5).

2. The flexible fuse according to claim 1, characterized in that: The connecting plate (3) is connected to the terminal (2) through multiple flexible connectors (5).

3. The flexible fuse according to claim 1 or 2, characterized in that: The flexible connector (5) includes a conductor and an insulating layer disposed on the outside of the conductor.

4. The flexible fuse according to claim 3, characterized in that: The conductor is any one of soft copper wire, braided copper strip, copper-aluminum composite braided strip, or nano-coated copper wire.

5. The flexible fuse according to claim 4, characterized in that: The copper used in the soft copper wire, braided copper strip, copper-aluminum composite braided strip, or nano-coated copper wire is all pure copper.

6. The flexible fuse according to claim 1, characterized in that: Both ends of the flexible connector (5) are welded to the connecting plate (3) and the terminal (2).

7. The flexible fuse according to claim 6, characterized in that: Both ends of the flexible connector (5) are laser welded to the connecting plate (3) and the terminal (2) respectively.

8. The flexible fuse according to claim 1, characterized in that: The end of the fusion tube (1) is provided with a cover plate (4) located outside the connecting plate (3); The cover plate (4) has a through hole (6) through which the flexible connector (5) can pass.

9. The flexible fuse according to claim 8, characterized in that: Positioning grooves are provided at both ends of the fusion tube (1); The connecting plate (3) is fixed in the positioning groove by the cover plate (4).

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