A fuse device

Abstract

The utility model discloses a fuse device, its characterized in that, include: plastic top cover, plastic top cover can buckle and be connected with ceramic base, reserve accommodating space between plastic top cover and ceramic base, the fuse is buried in the accommodating space, the fuse surface is provided with fire -retardant material, electrode needle, electrode needle is connected with the fuse. The product is wrapped or coated to the fuse and electrode cover through setting fire -retardant material on the fuse surface, can effectively restrain the spread of electric arc when the electric arc of fuse overload or short circuit produces, avoid the fuse box inside temperature sharp rise due to electric arc, and further prevent the appearance of safety hidden danger such as shell body burnout and fire. In addition, ceramic base has good high temperature resistance and insulation performance, can effectively isolate heat and current under the environment of high temperature or electric arc, prevent current leakage or device deformation.

Description

Technical Field

[0001] This utility model relates to the field of fuse technology, and specifically to a fuse device. Background Technology

[0002] Existing fuses are prone to generating large electric arcs when overloaded or short-circuited, causing the temperature inside the fuse box to rise rapidly, which can lead to the burning of the fuse casing and even cause a fire, posing a significant safety hazard.

[0003] Therefore, designing a fuse device that can effectively suppress electric arcs and improve safety performance has become an urgent problem to be solved. Utility Model Content

[0004] The purpose of this invention is to overcome the defects of existing fuses and provide a fuse device to solve the problems of poor arc suppression capability and low safety performance in the prior art.

[0005] This application provides a fuse device, including: A plastic top cover is attached to a ceramic base. A space is reserved between the plastic top cover and the ceramic base, and a fusible wire is embedded in the space. The surface of the fusible wire is covered with flame-retardant material. Electrode needle, connected to fuse.

[0006] Furthermore, the fuse device also includes a glass fiber rod located within the receiving space, with the fuse wire spirally wound around the outer periphery of the glass fiber rod.

[0007] Furthermore, there are two electrode needles, one end of each electrode needle penetrates the ceramic base and extends towards the fuse to form an electrode sleeve, and the two electrode sleeves are welded to the left and right ends of the fuse respectively.

[0008] Furthermore, the flame-retardant material is silicone, which fills the containment space and encapsulates the fuse and electrode sleeve.

[0009] Furthermore, the flame-retardant material is epoxy resin, which fills the containment space and encapsulates the fuse and electrode sleeve.

[0010] Furthermore, the flame retardant material is silicone, which is uniformly coated on the surface of the fused wire.

[0011] Furthermore, the flame retardant material is epoxy resin, which is uniformly coated on the surface of the fused wire.

[0012] Furthermore, the ceramic base has fastening strips on both sides, and the plastic top cover has slots on the left and right inner surfaces that are compatible with the fastening strips, into which the fastening strips are inserted.

[0013] Furthermore, a sealing ring is provided inside the slot, which fits tightly against the outer surface of the fastening strip.

[0014] Furthermore, the electrode needle is made of copper.

[0015] In summary, this utility model has the following advantages compared with the prior art: This product, by applying flame-retardant materials such as silicone or epoxy resin to the surface of the fuse wire, whether filling the containment space to wrap the fuse wire and electrode sleeve, or uniformly coating the surface of the fuse wire, can effectively suppress the spread of electric arc when the fuse is overloaded or short-circuited and arcs are generated. This prevents the temperature inside the fuse box from rising sharply due to the arc, thereby preventing the outer casing from burning and other safety hazards such as fire, and greatly improving the overall safety performance.

[0016] In addition, the ceramic base has good high temperature resistance and insulation properties, and can effectively isolate heat and current in high temperature or electric arc environments to prevent current leakage or device deformation. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 A first structural diagram of the fuse device provided by this utility model; Figure 2 A second structural diagram of the fuse device provided by this utility model; Figure 3 A schematic diagram of the plastic top cover provided by this utility model; Figure 4 A schematic diagram of the ceramic base provided by this utility model.

[0018] Figure Labels

[0019] 1-Plastic top cover; 2-Ceramic base; 3-Fuse wire; 4-Flame retardant material; 5-Electrode needle; 6-Fiberglass rod; 7-Electrode sleeve; 8-Snap-fit ​​strip. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of this utility model.

[0026] In the following description, suffixes such as "module," "part," "component," or "unit" are used only for the purpose of describing this utility model and have no specific meaning in themselves. Therefore, they can be used in combination.

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] According to one embodiment of the present invention, such as Figures 1-4 As shown, a fuse device includes: A plastic top cover 1 is snapped onto a ceramic base 2. A receiving space is reserved between the plastic top cover and the ceramic base 2. A fuse 3 is embedded in the receiving space. A flame-retardant material 4 is provided on the surface of the fuse 3. Electrode needle 5, which is connected to fuse 3.

[0029] In this embodiment, when the circuit is working normally, the current is conducted to the fuse 3 through the electrode needle 5. The fuse 3 allows normal current to pass through, ensuring the normal continuity of the circuit. However, if an overload or short circuit occurs in the circuit, and the current exceeds the rated current of the fuse 3, the fuse 3 will melt due to overheating, thereby cutting off the circuit and providing protection. At the same time, since the surface of the fuse 3 is provided with flame-retardant material 4, at the moment the fuse 3 melts and generates an arc, the flame-retardant material 4 can effectively suppress the spread of the arc, avoiding a sharp increase in the internal temperature of the fuse device caused by the arc. This prevents components with low ignition points, such as the plastic top cover 1, from being damaged by high temperatures, greatly improving the safety performance of the entire device.

[0030] In addition, the ceramic base 2 has good high temperature resistance and insulation properties, and can effectively isolate heat and current in high temperature or electric arc environments to prevent current leakage or device deformation.

[0031] In one possible implementation, the fuse device further includes a glass fiber rod 6 located within a receiving space, and the fuse wire 3 is spirally wound around the outer periphery of the glass fiber rod 6.

[0032] In this embodiment, the fiberglass rod 6 possesses excellent insulation and high-temperature resistance. When the fuse 3 is operating normally, the fiberglass rod 6 supports the fuse 3, maintaining its stable position within the device and ensuring smooth current flow. When the fuse 3 melts and generates an electric arc, the fiberglass rod 6 acts as a barrier, preventing the arc from spreading. Combined with the flame-retardant material 4, it suppresses the impact of the arc on other components within the device. It also prevents potential damage to nearby components such as the plastic top cover 1 caused by the high temperature of the arc, ensuring the overall safety and stability of the fuse device and contributing to extending its service life.

[0033] In one possible implementation, there are two electrode needles 5, one end of each electrode needle 5 passes through the ceramic base 2 and extends toward the fuse 3 to form an electrode sleeve 7, and the two electrode sleeves 7 are respectively welded to the left and right ends of the fuse 3.

[0034] In this embodiment, the two electrode pins 5 serve as interfaces for circuit connection, allowing the external circuit to be electrically connected to the fuse 3 via the electrode pins 5. After the electrode pins 5 penetrate the ceramic base 2 and extend to form the electrode sleeve 7, they can form a tight and stable welded connection with the fuse 3. This ensures good contact during the current conduction from the electrode pins 5 to the fuse 3, reducing problems such as increased contact resistance and overheating caused by loose connections.

[0035] In one possible implementation, the flame-retardant material 4 is silicone, which fills the containment space and encapsulates the fuse 3 and the electrode sleeve 7.

[0036] In this embodiment, when silicone is used as a filler material within the containment space, it can fully encapsulate the fuse 3 and electrode sleeve 7, forming a relatively sealed protective layer. When the fuse 3 melts and generates an electric arc, the silicone, with its excellent flame-retardant properties, can quickly isolate oxygen, preventing the arc from fully contacting the surrounding air, thereby inhibiting the continued combustion and spread of the arc and reducing the impact of the heat generated by the arc on surrounding components. Simultaneously, silicone also possesses a certain degree of flexibility and filling capacity, allowing it to fill tiny gaps within the containment space, further enhancing the internal sealing of the device and preventing external dust, moisture, and other impurities from entering and affecting the normal operation of the fuse 3 and other components, thus ensuring the reliability and stability of the fuse device under different environments.

[0037] In one possible implementation, the flame retardant material 4 is epoxy resin, which fills the containment space and encapsulates the fuse 3 and the electrode sleeve 7.

[0038] In this embodiment, when epoxy resin is used as an alternative flame-retardant filler material, filling the containment space and wrapping the fuse 3 and electrode sleeve 7, once the fuse 3 melts and an electric arc occurs, the epoxy resin, with its high flame retardancy, can effectively prevent the further development of the arc, confining it to a small area and preventing it from causing large-area high-temperature damage to the entire fuse device. Furthermore, the epoxy resin, after curing, has high mechanical strength, which can provide a certain degree of fixation and protection for the fuse 3 and electrode sleeve 7. This ensures that even under certain external impacts or vibrations during daily use, the connection and relative position of the fuse 3 and electrode sleeve 7 remain stable, guaranteeing the stable operation of the fuse device in the circuit and ensuring circuit safety.

[0039] In one possible implementation, the flame retardant material 4 is silicone, which is uniformly coated on the surface of the fuse 3.

[0040] In this embodiment, when silicone is uniformly coated onto the surface of fuse 3 as a coating material, a thin protective film can be formed on the surface of fuse 3. When fuse 3 melts due to overload or short circuit and generates an electric arc, this silicone film can come into contact with the electric arc immediately, using its flame-retardant properties to suppress the intensity of the electric arc and slow down the spread of the electric arc, thereby reducing the impact of the high heat generated by the electric arc on the space around fuse 3 and the entire fuse device.

[0041] In one possible implementation, the flame retardant material 4 is epoxy resin, which is uniformly coated on the surface of the fuse 3.

[0042] In this embodiment, when epoxy resin is used as an alternative coating material and uniformly coated on the surface of the fuse 3, it adheres tightly to the fuse 3, forming a continuous protective layer. At the moment the fuse 3 melts and generates an electric arc, the epoxy resin layer, with its excellent flame-retardant and insulating properties, effectively blocks the heat transfer of the arc, inhibits further arc expansion, and prevents the arc from damaging surrounding components with low ignition points, such as the plastic top cover 1.

[0043] In one possible implementation, fastening strips 8 are provided on the left and right sides of the ceramic base 2, and the left and right inner surfaces of the plastic top cover 1 are provided with slots that are adapted to the fastening strips 8, and the fastening strips 8 are inserted into the slots.

[0044] In this embodiment, when installing the fuse device, simply align the fastening strip 8 of the ceramic base 2 with the slot of the plastic top cover 1, and then gently press it to allow the fastening strip 8 to be smoothly inserted into the slot, thus achieving a tight fastening connection between the plastic top cover 1 and the ceramic base 2. The operation is very convenient.

[0045] In one possible implementation, a sealing ring is also provided in the slot, and the sealing ring is tightly fitted to the outer surface of the fastening strip 8.

[0046] In this embodiment, the sealing ring further enhances the seal between the plastic top cover 1 and the ceramic base 2. When the fastening strip 8 is inserted into the slot, the sealing ring will tightly adhere to the outer surface of the fastening strip 8, effectively preventing external moisture, dust, and other impurities from entering the device. This avoids these impurities causing corrosion, short circuits, or other adverse effects on internal components such as the fuse 3 and electrode needle 5, ensuring a clean and dry internal environment for the fuse device. This allows each component to operate stably in a favorable environment, guaranteeing the reliability and stability of the fuse device under different environmental conditions and extending its overall service life.

[0047] In one possible implementation, the electrode needle 5 is a copper electrode needle.

[0048] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A fuse device, characterized in that, include: A plastic top cover, which can be snapped onto a ceramic base, with a reserved space between the plastic top cover and the ceramic base, and a fusible wire embedded in the space, the surface of which is covered with flame-retardant material; An electrode needle, which is connected to a fuse.

2. A fuse device according to claim 1, characterized in that, The fuse device also includes a glass fiber rod located within the receiving space, and the fuse wire is spirally wound around the outer periphery of the glass fiber rod.

3. A fuse device according to claim 2, characterized in that, The number of electrode needles is two. One end of each electrode needle passes through the ceramic base and extends towards the fuse to form an electrode sleeve. The two electrode sleeves are respectively welded to the left and right ends of the fuse.

4. A fuse device according to claim 3, characterized in that, The flame-retardant material is silicone, which fills the containment space and encapsulates the fuse and electrode sleeve.

5. A fuse device according to claim 3, characterized in that, The flame-retardant material is epoxy resin, which fills the containment space and encapsulates the fuse and electrode sleeve.

6. A fuse device according to claim 1, characterized in that, The flame-retardant material is silicone, which is uniformly coated on the surface of the fused wire.

7. A fuse device according to claim 1, characterized in that, The flame retardant material is epoxy resin, which is uniformly coated on the surface of the fused wire.

8. A fuse device according to claim 1, characterized in that, The ceramic base has fastening strips on its left and right sides, and the plastic top cover has slots on its left and right inner surfaces that are adapted to the fastening strips. The fastening strips are inserted into the slots.

9. A fuse device according to claim 8, characterized in that, A sealing ring is also provided in the slot, and the sealing ring is tightly attached to the outer surface of the fastening strip.

10. A fuse device according to claim 1, characterized in that, The electrode needle is a copper electrode needle.

Images