A high safety fuse device

Abstract

The utility model discloses a high security fuse device, its characterized in that, including: ceramic top cover, ceramic top cover detachable connection has plastic base, and the accommodation space is reserved between ceramic top cover and plastic base, and the fuse is buried in the accommodation space, and the fuse surface is equipped with and / or is wrapped with flame -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 flame -retardant material on the fuse surface, can effectively restrain the spread of electric arc when the fuse overload or short circuit produces electric arc, avoid the fuse box inside temperature sharp rise due to electric arc, and further prevent the appearance of shell body burns and fire etc. Safety hidden danger. In addition, ceramic top cover has excellent high temperature resistance and insulation performance, and it can directly bear the instantaneous high temperature produced when the fuse fuses, and can effectively block the current conduction of the charged components in the accommodation space and the external environment, prevent the electric shock risk caused by accidental contact of the operator.

Description

Technical Field

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

[0002] In current applications, existing fuses often generate large electric arcs when subjected to overload or short circuit conditions. The appearance of this arc causes a rapid rise in temperature inside the fuse box, which can easily burn out the fuse's outer casing. In severe cases, it can even cause a fire, posing a significant safety hazard to the environment.

[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 high-safety fuse device to solve the problems of poor arc suppression capability and low safety performance in the prior art.

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

[0006] Furthermore, the fuse device also includes a fiberglass rod, which is fixed within the receiving space, and the fuse wire is spirally wound around the outer periphery of the fiberglass rod.

[0007] Furthermore, there are two electrode needles, one end of each electrode needle penetrates the plastic 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 materials are mica tubes and silicone. The mica tubes are sleeved in the middle section of the fuse, and the left and right end faces of the mica tubes respectively abut against and press against the two electrode sleeves. Silicone fills the left and right sides of the containment space and wraps the fuses and electrode sleeves at both ends.

[0009] Furthermore, the flame-retardant materials are mica tubes and epoxy resin. The mica tubes are sleeved in the middle section of the fuse, and the left and right end faces of the mica tubes respectively abut against and squeeze the two electrode sleeves. Epoxy resin fills the left and right sides of the containment space and wraps the fuses and electrode sleeves at both ends.

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

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

[0012] Furthermore, the plastic base has fastening strips on both sides, and the ceramic 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, the present invention has the following advantages compared with the prior art: This product utilizes flame-retardant materials such as mica tubes, silicone, and epoxy resin on the surface of the fuse wire. For example, the mica tube is sleeved in the middle section of the fuse wire, with its end face pressing against and squeezing the electrode sleeve, providing a central barrier protection. Simultaneously, silicone or epoxy resin fills both sides of the containment space and wraps the corresponding parts of the fuse wire and electrode sleeve, or silicone and epoxy resin are evenly coated on the surface of the fuse wire. When the fuse experiences overload or short circuit and generates an arc, these flame-retardant materials work together to effectively block and suppress the further spread of the arc, preventing the internal temperature of the fuse box from rising rapidly and significantly due to the arc. This avoids serious safety hazards such as the burning of the outer casing and fire, significantly improving the safety performance of the entire device.

[0016] In addition, the ceramic top cover has excellent high temperature resistance and insulation properties. It can directly withstand the instantaneous high temperature generated when the fuse melts, and at the same time, it can effectively block the current conduction between the live parts in the housing space and the external environment, preventing the risk of electric shock to the operator due to accidental contact. 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 The third structural diagram of the fuse device provided by this utility model; Figure 4 A schematic diagram of the ceramic top cover provided by this utility model; Figure 5A schematic diagram of the plastic base provided by this utility model.

[0018] Figure Labels

[0019] 1-Ceramic top cover; 2-Plastic base; 3-Fuse wire; 4-Mica tube; 5-Silicone; 6-Electrode needle; 7-Glass fiber rod; 8-Electrode sleeve; 9-Fastening 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 1-5 As shown, a high-security fuse device includes: A ceramic top cover 1 is detachably connected to a plastic base 2. A receiving space is reserved between the ceramic top cover 1 and the plastic base 2. A fuse 3 is embedded in the receiving space. The surface of the fuse 3 is covered with and / or wrapped with flame-retardant material. Electrode needle 6, which is connected to fuse 3.

[0029] In this embodiment, during normal circuit operation, current is conducted to fuse 3 via electrode needle 6. Fuse 3 ensures the smooth flow of normal current to maintain the normal continuity of the circuit. If an overload or short circuit occurs, and the current exceeds the rated current of fuse 3, fuse 3 will melt due to overheating, thereby cutting off the circuit and achieving the protection function. Simultaneously, given that the surface of fuse 3 is coated with flame-retardant material, when fuse 3 melts and generates an arc, this material can suppress the arc, preventing its uncontrolled spread and avoiding a rapid increase in the internal temperature of the fuse device due to the arc. This protects components with relatively low ignition points, such as the plastic base 2, from high-temperature damage, significantly improving the overall safety performance of the device.

[0030] In addition, the ceramic top cover 1 has excellent high temperature resistance and insulation properties. It can directly withstand the instantaneous high temperature generated when the fuse melts, and at the same time, it can effectively block the current conduction between the live parts in the housing space and the external environment, preventing the risk of electric shock caused by accidental contact by the operator.

[0031] In one possible implementation, the fuse device further includes a glass fiber rod 7, which is fixed within the receiving space, and the fuse 3 is spirally wound around the outer periphery of the glass fiber rod 7.

[0032] In this embodiment, the fiberglass rod 7 possesses excellent insulation and high-temperature resistance. When the fuse 3 is operating normally, the fiberglass rod 7 provides stable support, ensuring its stable position within the device and allowing current to flow smoothly through it. When the fuse 3 melts and generates an electric arc, the fiberglass rod 7 acts as a barrier, preventing the arc from spreading to surrounding areas. It also works with other flame-retardant materials to suppress damage to components with lower ignition points within the device, ensuring the overall safety and stability of the fuse device and extending its service life.

[0033] In one possible implementation, there are two electrode needles 6, one end of each electrode needle 6 passes through the plastic base 2 and extends toward the fuse 3 to form an electrode sleeve 8, and the two electrode sleeves 8 are respectively welded to the left and right ends of the fuse 3.

[0034] In this embodiment, the two electrode pins 6 serve as circuit connection interfaces, allowing the external circuit to be electrically connected to the fuse 3. After the electrode pins 6 penetrate the plastic base 2 and extend to form the electrode sleeve 8, they can form a tight and stable welded connection with the fuse 3. This ensures good contact during current conduction from the electrode pins 6 to the fuse 3, reducing problems such as increased contact resistance and overheating caused by loose connections, thereby guaranteeing the reliability of the entire circuit system in the connection stage.

[0035] In one possible implementation, the flame-retardant material is a mica tube 4 and silicone 5. The mica tube 4 is sleeved in the middle section of the fuse 3, and the left and right end faces of the mica tube 4 respectively abut against and press against the two electrode sleeves 8. The silicone 5 fills the left and right sides of the accommodating space and wraps the fuse 3 and electrode sleeve 8 at the left and right ends.

[0036] In this embodiment, the mica tube 4 is fitted into the middle section of the fuse 3. It possesses excellent insulation, high-temperature resistance, and reusability. When the fuse 3 is operating normally, the mica tube 4 acts as an isolation barrier, protecting the middle section from external interference. When the fuse 3 melts and generates an arc, the mica tube 4, with its inherent properties, prevents the arc from spreading from the middle to both ends. Furthermore, its left and right end faces press against and compress the two electrode sleeves 8, helping to limit the arc's spread in that area. Silicone 5 fills the left and right sides of the accommodating space and wraps around the corresponding fuse 3 and electrode sleeves 8. When an arc occurs, the silicone 5, with its excellent flame-retardant properties, quickly isolates oxygen, preventing the arc from fully contacting the surrounding air, inhibiting the continued burning and spread of the arc, and reducing the impact of the heat generated by the arc on surrounding components with lower ignition points, such as the plastic base 2. This ensures the safe and stable operation of the device and guarantees that all components can operate normally in a relatively suitable environment.

[0037] In one possible implementation, the flame-retardant material is a mica tube 4 and epoxy resin. The mica tube 4 is sleeved on the middle section of the fuse 3, and the left and right end faces of the mica tube 4 respectively abut against and press against the two electrode sleeves 8. The epoxy resin fills the left and right sides of the accommodating space and wraps the fuse 3 and electrode sleeve 8 at both ends.

[0038] In this embodiment, the mica tube 4 is fitted into the middle section of the fuse 3. It possesses excellent insulation, high-temperature resistance, and reusability, ensuring the stability and safety of the middle section of the fuse 3 under normal conditions. When the fuse 3 melts and generates an arc, the mica tube 4, relying on its insulation and high-temperature resistance, prevents the arc from spreading from the center to the periphery. Furthermore, its contact structure with the electrode sleeve 8 helps limit the arc's expansion in that area. After multiple instances of the fuse 3 melting and generating arcs, the mica tube 4 can still maintain its original performance and continue to be used, reducing costs and improving efficiency for long-term device use. Epoxy resin fills the left and right sides of the containment space and wraps the corresponding positions of the fuse 3 and electrode sleeve 8. Once the fuse 3 melts and an arc occurs, the epoxy resin, with its high flame retardancy, effectively limits the further development of the arc, controlling it within a small area and preventing large-area high-temperature damage to the entire fuse device, especially to components with low ignition points such as the plastic base 2. Moreover, epoxy resin has high mechanical strength after curing, which can fix and protect the fuse 3 and electrode sleeve 8. Even if it is subjected to external impact or vibration during daily use, the connection and relative position of the fuse 3 and electrode sleeve 8 can remain stable, ensuring that the fuse device operates stably in the circuit and ensuring circuit safety.

[0039] In one possible implementation, the flame retardant material is silicone 5, which is uniformly coated on the surface of the fuse 3.

[0040] In this embodiment, silicone 5 is uniformly coated on the surface of fuse 3 to form a protective film. When fuse 3 melts due to overload or short circuit and generates an arc, the silicone 5 film can make contact with the arc first. With its flame-retardant properties, it can suppress the arc intensity and slow down the arc propagation speed, thereby reducing the impact of the high heat generated by the arc on the space around fuse 3 and low-ignition-point components in the entire fuse device, such as the plastic base 2. This ensures that all components of the device can continue to work in a relatively safe environment and maintain the stability of the circuit system.

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

[0042] In this embodiment, after epoxy resin is uniformly coated onto the surface of fuse 3, a continuous protective layer is formed. At the moment fuse 3 melts and generates an electric arc, the epoxy resin layer, with its excellent flame-retardant and insulating properties, effectively blocks the transfer of arc heat, inhibits further arc expansion, and prevents damage to surrounding components with low ignition points, such as the plastic base 2. This ensures the structural integrity of the fuse device and the normal operation of all components, allowing it to continuously and effectively perform its circuit protection function and ensuring the normal operation of the entire circuit system remains unaffected.

[0043] In one possible implementation, fastening strips 9 are provided on the left and right sides of the plastic base 2, and the left and right inner surfaces of the ceramic top cover 1 are provided with slots that are adapted to the fastening strips 9, and the fastening strips 9 are inserted into the slots.

[0044] In this embodiment, when installing the fuse device, simply align the snap-fit ​​strip 9 of the plastic base 2 with the slot of the ceramic top cover 1 and press it gently to insert the snap-fit ​​strip 9 into the slot, thus achieving a tight snap-fit ​​connection between the two. The operation is simple.

[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 9.

[0046] In this embodiment, the sealing ring further enhances the sealing performance between the ceramic top cover 1 and the plastic base 2. When the fastening strip 9 is inserted into the slot, the sealing ring tightly adheres to the outer surface of the fastening strip 9, effectively preventing external moisture, dust, and other impurities from entering the device and avoiding adverse effects such as corrosion and short circuits on internal components such as the fuse 3 and electrode needle 6.

[0047] In one possible implementation, the electrode needle 6 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 high safety fuse device, characterized by comprising: include: A ceramic top cover, wherein the ceramic top cover is detachably connected to a plastic base, and a receiving space is reserved between the ceramic top cover and the plastic base, wherein a fusible wire is embedded in the receiving space, and the surface of the fusible wire is covered and / or wrapped with flame-retardant material; An electrode needle, which is connected to a fuse.

2. The high safety fuse device according to claim 1, wherein The fuse device also includes a glass fiber rod, which is fixed in the receiving space, and the fuse wire is spirally wound around the outer periphery of the glass fiber rod.

3. The high safety fuse device according to claim 2, wherein The number of electrode needles is two. One end of each electrode needle passes through the plastic 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. The high safety fuse device according to claim 3, wherein The flame-retardant material is mica tube and silicone. The mica tube is sleeved in the middle section of the fuse, and the left and right end faces of the mica tube respectively abut against and press against the two electrode sleeves. The silicone fills the left and right sides of the accommodating space and wraps the fuses and electrode sleeves at both ends.

5. The high safety fuse device according to claim 3, wherein The flame-retardant material is mica tube and epoxy resin. The mica tube is sleeved in the middle section of the fuse, and the left and right end faces of the mica tube respectively abut against and squeeze the two electrode sleeves. The epoxy resin fills the left and right sides of the accommodating space and wraps the fuse and electrode sleeve at both ends.

6. The high safety fuse device according to claim 1, wherein The flame-retardant material is silicone, which is uniformly coated on the surface of the fused wire.

7. The high safety fuse device according to claim 1, wherein The flame retardant material is epoxy resin, which is uniformly coated on the surface of the fused wire.

8. The high safety fuse device according to claim 1, wherein The plastic base has fastening strips on its left and right sides, and the ceramic 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. The high safety fuse device according to claim 8, wherein 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. The high safety fuse device according to claim 1, wherein The electrode needle is a copper electrode needle.

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