A plug-in fuse

Abstract

The utility model provides a plug -in fuse, relates to plug -in fuse field, including casing and plug -in assembly, the outer surface of casing is opened has the mounting groove, the plug -in assembly includes the protection cover of installation in the casing outer lateral wall, the inner wall of protection cover is installed with the electromagnet, the upper top of protection cover is connected with the start button fixedly, the start button with electromagnet electric signal connection, the inner wall of casing is installed with the closing plate, can pass through the cooperation of each spare part, in the plug -in process of fuse, utilize the magnetic force effect of electromagnet and strong magnet pole, through the operation of start button, make two strong magnet pole slide through magnetic repulsion and insert into the inside of through slot and realize the joint, and utilize a plurality of clamping rod and bushing can further improve the rigidity of plug -in, synchronous auxiliary a plurality of clamping post and the clamping groove, realize the joint of closing plate and casing from a plurality of directions, improve the sealing effect of fuse, and then improve the stability in long -term use.

Description

Technical Field

[0001] This utility model belongs to the field of plug-in fuses, and more specifically, it relates to a plug-in fuse. Background Technology

[0002] A pluggable fuse is a short-circuit and overload protection device that is installed and replaced by plugging and unplugging. Its core consists of a fuse element (fuse conductor), an insulating shell, and a pluggable contact structure. When the circuit is normal, the fuse element conducts current. When there is an overload or short circuit, the fuse element melts and cuts off the circuit, protecting the equipment and line safety. Its installation and replacement are convenient and do not require tools. The fuse element can be replaced or the fuse can be removed and installed by simply plugging and unplugging, which greatly reduces maintenance downtime.

[0003] An investigation revealed a utility model patent (publication number: CN220156225U) disclosing a pluggable surge protector with a built-in fuse. The protector includes a base and a surge protection module detachably connected to its inner side. Plug-in components are symmetrically installed at the upper and lower ends of the surge protection module. The surge protection module and base are plugged in and out via these components. A disassembly / removal port is provided on one side of the surge protection module, and a sealing plate assembly is detachably connected within this port. This utility model, through the cooperation of the pluggable and sealing plate assemblies, allows for easy fuse replacement by pressing an elastic pressure plate, which moves an elastic guide plate towards the surge protection module and separates the limiting protrusion from the limiting groove. This facilitates disassembly of the surge protection module and improves the convenience of fuse replacement. Simultaneously, the extension portion deforms the elastic U-shaped retaining block, causing it to separate along the locking groove, allowing the cover to be opened for fuse replacement within the surge protection module.

[0004] Although the above technical solution allows for quick installation and removal through plug-in components, the elasticity of the snap-fit ​​material decreases with each insertion and removal. As a result, during later maintenance, the connection is more likely to loosen, allowing external dust and moisture to enter the fuse and significantly affecting its performance.

[0005] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a plug-in fuse in order to achieve a more practical purpose. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model provides a pluggable fuse to solve the problem of loosening of the connection due to deformation of the pluggable material as the number of plugging and unplugging operations increases.

[0007] The purpose and effect of this plug-in fuse are achieved by the following specific technical means:

[0008] A pluggable fuse includes a housing and a pluggable assembly, wherein the outer surface of the housing is provided with a mounting groove;

[0009] The plug-in assembly includes a protective cover installed on the outer wall of the housing. An electromagnet is installed on the inner wall of the protective cover. A start button is fixedly connected to the top of the protective cover. The start button is electrically connected to the electromagnet. A sealing plate is installed on the inner wall of the housing. A through groove is opened on the outer surface of the sealing plate and the inner wall of the housing. A strong magnetic rod is slidably connected to the inner wall of the through groove.

[0010] Furthermore, a locking rod is fixedly connected to the outer wall of one of the strong magnetic rods, and a sleeve is fixedly connected to the outer wall of the other strong magnetic rod corresponding to the locking rod. The output end of the electromagnet is fixedly connected to the outer wall of the strong magnetic rod through a constant force spring, and there are multiple constant force springs.

[0011] Furthermore, a compression spring is fixedly connected to the inner wall of the sealing plate, and a locking pin is fixedly connected to the end of the compression spring, with the locking pin slidably connected to the inner wall of the sealing plate.

[0012] Furthermore, the outer wall of the housing has a slot for the locking post, the outer side wall of the housing has a heat dissipation groove, and the inner wall of the heat dissipation groove is fitted with a filter plate.

[0013] Furthermore, a heat dissipation plate is installed on the inner wall of the heat dissipation groove on one side of the filter plate, and a bimetallic strip is installed on the inner wall of the heat dissipation plate, and there are multiple bimetallic strips.

[0014] Furthermore, a pull rod is fixedly connected to the outer surface of the sealing plate, and an anti-slip strip is fixedly connected to the outer wall of the housing.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] By incorporating a plug-in assembly, the various components work together to allow the fuse to be inserted and removed. Utilizing the magnetic force of the electromagnet and the strong magnetic rod, the two strong magnetic rods slide into the through slot through magnetic repulsion when the start button is pressed, achieving a locking connection. The use of multiple locking rods and sleeves further enhances the rigidity of the connection, simultaneously assisting multiple locking posts and slots to achieve locking between the sealing plate and the housing from multiple directions, improving the fuse's sealing effect and thus enhancing its long-term stability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0018] Figure 2 This is a schematic diagram of the interior of the protective cover in this utility model.

[0019] Figure 3 This is a schematic diagram of the through groove in this utility model.

[0020] Figure 4 This is a schematic diagram of the filter plate in this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1. Housing; 2. Mounting slot; 3. Protective cover; 4. Electromagnet; 5. Start button; 6. Sealing plate; 7. Through slot; 8. Strong magnetic rod; 9. Locking rod; 10. Insert sleeve; 11. Constant force spring; 12. Compression spring; 13. Locking post; 14. Locking slot; 15. Heat dissipation slot; 16. Filter plate; 17. Heat dissipation plate; 18. Bimetallic strip; 19. Pull-out rod. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship 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 do not 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. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example:

[0027] As attached Figure 1 To be continued Figure 4 As shown:

[0028] This utility model provides a pluggable fuse, including a housing 1 and a pluggable assembly, wherein the outer surface of the housing 1 is provided with a mounting groove 2;

[0029] The plug-in assembly includes a protective cover 3 installed on the outer wall of the housing 1, an electromagnet 4 installed on the inner wall of the protective cover 3, a start button 5 fixedly connected to the top of the protective cover 3, the start button 5 being electrically connected to the electromagnet 4, a sealing plate 6 installed on the inner wall of the housing 1, and through grooves 7 opened on the outer surface of the sealing plate 6 and the inner wall of the housing 1, with a strong magnetic rod 8 slidably connected to the inner wall of the through groove 7.

[0030] One of the strong magnetic rods 8 has a locking rod 9 fixedly connected to its outer wall, and the other strong magnetic rod 8 has a plug sleeve 10 fixedly connected to its outer wall at the same location as the locking rod 9. The output end of the electromagnet 4 is fixedly connected to the outer wall of the strong magnetic rod 8 through a constant force spring 11. There are multiple constant force springs 11.

[0031] Specifically, through the design of the plug-in assembly, the cooperation of various components allows the electromagnet 4 and the strong magnetic rod 8 to quickly open the sealing plate 6 during the plugging and unplugging process of the fuse, thereby installing the internal fuse body. This improves efficiency and avoids the phenomenon of loose connection after long-term use. After the sealing plate 6 is inserted, pressing the start button 5 energizes the electromagnet 4, and the magnetic repulsion causes the strong magnetic rod 8 to slide into the through slot 7. The magnetic attraction of the two strong magnetic rods 8 maintains the stability of the sealing plate 6 installation. When the two strong magnetic rods 8 are attracted, the locking rod 9 on its outer wall and the plug sleeve 10 will be inserted, further improving the rigidity of the connection. The setting of multiple constant force springs 11 utilizes the material properties of the springs to continuously provide a pushing effect for the strong magnetic rod 8, thus facilitating continuous and stable contact.

[0032] A compression spring 12 is fixedly connected to the inner wall of the sealing plate 6, and a locking post 13 is fixedly connected to the end of the compression spring 12. The locking post 13 is slidably connected to the inner wall of the sealing plate 6.

[0033] The outer wall of the housing 1 has a slot 14 at the slot 13, and the outer wall of the housing 1 has a heat dissipation groove 15. The inner wall of the heat dissipation groove 15 is equipped with a filter plate 16.

[0034] Specifically, the compression spring 12 on the inner wall of the sealing plate 6, in conjunction with the locking post 13, allows the locking post 13 to engage with the locking groove 14 on the outer wall of the housing 1 when the sealing plate 6 is pushed into the housing 1. This multi-directional engagement provides a stable connection between the sealing plate 6 and the housing 1. Meanwhile, the heat dissipation groove 15 on the outer wall of the housing 1 can meet the temperature dissipation requirements during daily use of the fuse, preventing heat buildup from affecting the fuse's performance.

[0035] A heat dissipation plate 17 is installed on the inner wall of the heat dissipation slot 15 on one side of the filter plate 16. A bimetallic strip 18 is installed on the inner wall of the heat dissipation plate 17. There are multiple bimetallic strips 18.

[0036] A pull rod 19 is fixedly connected to the outer surface of the sealing plate 6, and an anti-slip strip is fixedly connected to the outer wall of the housing 1.

[0037] Specifically, by setting a filter plate 16 on the inner wall of the heat dissipation slot 15, external dust can be prevented from entering the fuse during heat dissipation, thus affecting its operational stability. The heat dissipation plate 17 and its multiple bimetallic strips 18 can bend when the temperature rises, thereby increasing the heat exchange area and improving the heat dissipation effect. The pull rod 19 on the outer surface of the sealing plate 6 makes it easy for operators to remove the sealing plate 6 for regular maintenance.

[0038] In this invention, the fuse body is first inserted into the housing 1 to install the sealing plate 6. The compression spring 12 and the locking pins 13 on the inner wall of the sealing plate 6 allow for quick docking during installation by engaging multiple locking pins 13 with the locking slots 14 inside the housing 1. Then, pressing the start button 5 energizes the electromagnet 4, which uses magnetic repulsion to push the strong magnetic rod 8 into the through slot 7 to complete the engagement. The magnetic connection of the two strong magnetic rods 8 and the engagement of the locking rod 9 on the outer wall with the insert 10 further improve the installation stability of the sealing plate 6. When the fuse body needs to be replaced, the electromagnet 4 can be turned off, and the constant force spring 11 can be used to retract the strong magnetic rod 8, thereby releasing the engagement limit.

[0039] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A pluggable fuse, comprising a housing (1) and a pluggable assembly, characterized in that: The outer surface of the housing (1) is provided with a mounting groove (2); The plug-in assembly includes a protective cover (3) installed on the outer wall of the housing (1), an electromagnet (4) installed on the inner wall of the protective cover (3), a start button (5) fixedly connected to the top of the protective cover (3), the start button (5) being electrically connected to the electromagnet (4), a sealing plate (6) installed on the inner wall of the housing (1), and through grooves (7) opened on the outer surface of the sealing plate (6) and the inner wall of the housing (1), and a strong magnetic rod (8) is slidably connected to the inner wall of the through groove (7).

2. The plug-in fuse as described in claim 1, characterized in that: One of the strong magnetic rods (8) has a locking rod (9) fixedly connected to its outer wall, and the other strong magnetic rod (8) has a sleeve (10) fixedly connected to its outer wall at the location corresponding to the locking rod (9). The output end of the electromagnet (4) is fixedly connected to the outer wall of the strong magnetic rod (8) through a constant force spring (11). There are multiple constant force springs (11).

3. The plug-in fuse as described in claim 1, characterized in that: A compression spring (12) is fixedly connected to the inner wall of the sealing plate (6), and a locking post (13) is fixedly connected to the end of the compression spring (12). The locking post (13) is slidably connected to the inner wall of the sealing plate (6).

4. The plug-in fuse as described in claim 3, characterized in that: The outer wall of the housing (1) is provided with a slot (14) at the slot (13), and a heat dissipation groove (15) is provided on the outer wall of the housing (1). A filter plate (16) is installed on the inner wall of the heat dissipation groove (15).

5. A pluggable fuse as described in claim 4, characterized in that: The inner wall of the heat dissipation groove (15) is located on one side of the filter plate (16) and a heat dissipation plate (17) is installed. A bimetallic strip (18) is installed on the inner wall of the heat dissipation plate (17), and there are multiple bimetallic strips (18).

6. The plug-in fuse as described in claim 5, characterized in that: A pull rod (19) is fixedly connected to the outer surface of the sealing plate (6), and an anti-slip strip is fixedly connected to the outer wall of the housing (1).

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