Fuse with isolation structure

Abstract

The utility model relates to the technical field of fuses, in particular to a fuse with an isolation structure, which comprises a base plate, mounting shells are fixedly connected to the front side and the rear side of the top of the base plate, positioning mechanisms are fixedly connected to the opposite sides of the front mounting shell and the rear mounting shell, and lower isolation covers are inserted into inner cavities of the mounting shells. An upper isolation hood is movably connected to the top of the right side of the lower isolation hood, a controller shell is fixedly connected to the top of the upper isolation hood in a penetrating mode, a temperature sensor is connected to the bottom of the controller shell through bolts, and an alarm lamp is fixedly connected to the middle of the top of the controller shell. A cable penetrates through a middle hole of the sealing rubber ring and is connected with a binding post of the wire holder, and the lower isolation cover is fixedly mounted on the base plate after connection is completed, so that the wire holder can be isolated from external air through the lower isolation cover and the upper isolation cover at the top, external humid air, dust and the like are prevented from being in contact with the wire holder for moisture-proof and dust-proof protection, and the service life of the wire holder is prolonged. And the service life of the fuse is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of fuses, in particular to a fuse with an isolation structure. Background Art

[0002] A fuse refers to an electrical appliance that melts a fuse element by the heat generated by itself to disconnect the circuit when the current exceeds a specified value. It is widely used in high and low voltage power distribution systems, control systems, and electrical equipment as a protector against short circuits and overcurrents.

[0003] After retrieval, the publication number is CN214099565U, and the name is a fuse conducive to installation and maintenance, including a fuse body, a fixed plug, and a bottom plate. Through research and analysis, it is found that although the problem of inconvenient application of tools in a narrow space is avoided, the requirement for manpower during disassembly and assembly is reduced, so as to achieve the purpose of facilitating disassembly and assembly, thereby improving the convenience of the maintenance process. However, there are still the following defects to a certain extent.

[0004] For example, it does not have an isolation structure. The above fuse is completely exposed to the outside for use. In this way, being affected by external humid air and dust for a long time will cause the metal contacts to rust, resulting in poor contact, affecting normal use, and reducing the service life. Moreover, it does not have a warning and reminder function. In this way, when the fuse melts in a complex use environment, personnel cannot quickly find out which fuse has melted, affecting the replacement efficiency. To solve the above technical problems, we have designed a fuse with an isolation structure. Content of the Utility Model

[0005] The purpose of the utility model is to provide a fuse with an isolation structure, which has the functions of moisture-proof and dust-proof, reduces the failure rate, prolongs the service life of the fuse, has a warning and reminder function, enables personnel to quickly find out and replace it when using multiple fuses, and improves the replacement efficiency. It solves the problems of not having an isolation structure, being unable to perform moisture-proof and dust-proof, increasing the failure rate, affecting the service life, not having a warning and reminder function, being unable to quickly locate, and reducing the replacement efficiency.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A fuse with an isolation structure, including a base plate, both front and rear sides of the top of the base plate are fixedly connected with mounting shells, and positioning mechanisms are fixedly connected to the opposite sides of the front and rear two mounting shells. A lower isolation cover is inserted into the inner cavity of the mounting shell. The top of the right side of the lower isolation cover is movably connected with an upper isolation cover. The top of the upper isolation cover is fixedly connected through and penetrated by a controller housing. A temperature sensor is bolted to the bottom of the controller housing. An alarm lamp is fixedly connected to the middle of the top of the controller housing. Positioning insertion plates are fixedly connected to both front and rear sides of the left bottom of the upper isolation cover. Insertion slots are opened on both front and rear sides of the left top of the lower isolation cover. A wiring seat is bolted to the top of the base plate, and a fuse tube is inserted into the top of the wiring seat.

[0007] Preferably, the positioning mechanism includes a fixed housing, a movable insertion plate is slidably connected to the inner cavity of the fixed housing, the inner cavity of the movable insertion plate penetrates to the inside of the mounting shell, a pull rod and a positioning spring are respectively fixedly connected to the outside of the movable insertion plate, and the outside of the pull rod penetrates to the outside of the fixed housing and is fixedly connected with a pull plate.

[0008] Preferably, positioning holes are opened on both bottom sides of the front and rear of the lower isolation cover, and a clamping opening is opened on the outer side of the inner cavity of the insertion slot.

[0009] Preferably, threading holes are opened on both left and right sides of the lower isolation cover, and a sealing rubber ring is glued to the inner cavity of the threading hole.

[0010] Preferably, a reset switch is fixedly connected to the front side of the top of the controller housing, and a dry battery module is fixedly connected to the inner cavity of the rear side of the top of the controller housing.

[0011] Preferably, a sealing slot is opened at the edge of the top of the base plate, and a clamping block is fixedly connected to the outside of the positioning insertion plate.

[0012] Preferably, a connecting hinge is fixedly connected to the top of the right side of the lower isolation cover, and the top of the right side of the connecting hinge is fixedly connected with the upper isolation cover.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The cable passes through the middle hole of the sealing rubber ring and is connected to the terminal of the wiring seat. After the connection is completed, the lower isolation cover is fixedly installed on the base plate. In this way, the lower isolation cover and the upper isolation cover on the top can isolate the wiring seat from the outside air, prevent the outside humid air and dust from contacting the wiring seat for moisture-proof and dust-proof protection, and effectively extend the service life of the fuse.

[0015] 2. When a short circuit occurs, the fuse in the fuse tube will melt, and high temperature will be generated during the melting process. The temperature sensor detects the high temperature generated by the fuse tube, transmits the signal to the controller housing, and controls the alarm lamp to emit warning lights to remind the maintenance personnel. In this way, the personnel can find the melted fuse in time and accurately for replacement, effectively improving the replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Isometric view of the structure of the present invention;

[0017] Figure 2 Expanded isometric view of the upper isolation cover of the present invention;

[0018] Figure 3 Top view sectional isometric view of the partial structure of the present invention;

[0019] Figure 4 Left view top view isometric view of the lower isolation cover of the present invention.

[0020] In the figure: 1. Base plate; 2. Installation shell; 3. Positioning mechanism; 4. Lower isolation cover; 5. Upper isolation cover; 6. Reset switch; 7. Alarm lamp; 8. Dry battery module; 9. Controller housing; 10. Connecting hinge; 11. Threading hole; 12. Sealing rubber ring; 13. Insertion slot; 14. Fuse tube; 15. Wiring terminal; 16. Temperature sensor; 17. Positioning plug; 18. Block; 19. Sealing slot; 20. Fixed shell; 21. Positioning spring; 22. Pull rod; 23. Movable plug; 24. Clamping opening; 25. Positioning hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Please refer to Figures 1-4 , a fuse with an isolation structure, including a base plate 1, installation shells 2 are fixedly connected to both the front and rear sides of the top of the base plate 1, positioning mechanisms 3 are fixedly connected to the opposite sides of the two front and rear installation shells 2, a lower isolation cover 4 is inserted into the inner cavity of the installation shell 2, an upper isolation cover 5 is movably connected to the top of the right side of the lower isolation cover 4, a controller housing 9 is fixedly connected through the top of the upper isolation cover 5, a temperature sensor 16 is bolted to the bottom of the controller housing 9, an alarm lamp 7 is fixedly connected to the middle of the top of the controller housing 9, positioning plugs 17 are fixedly connected to both the front and rear sides of the left side of the bottom of the upper isolation cover 5, insertion slots 13 are opened on both the front and rear sides of the left side of the top of the lower isolation cover 4, a wiring terminal 15 is bolted to the top of the base plate 1, and a fuse tube 14 is inserted into the top of the wiring terminal 15;

[0022] Please refer to Figure 3, the positioning mechanism 3 includes a fixed housing 20. A movable insertion plate 23 is slidably connected to the inner cavity of the fixed housing 20. The inner cavity of the movable insertion plate 23 penetrates to the inner side of the installation housing 2. A pull rod 22 and a positioning spring 21 are respectively fixedly connected to the outer side of the movable insertion plate 23. By setting the positioning spring 21, the elastic potential energy can be released to push the movable insertion plate 23 into the installation housing 2 and the positioning hole 25 to position and install the lower isolation cover 4, making its disassembly and assembly more convenient and fast. The outer side of the pull rod 22 penetrates to the outer side of the fixed housing 20 and is fixedly connected to a pull plate;

[0023] Please refer to Figure 4 , positioning holes 25 are respectively opened at the bottoms of the front and rear sides of the lower isolation cover 4. A clamping opening 24 is opened at the outer side of the inner cavity of the insertion slot 13. By setting the clamping opening 24, after the positioning insertion plate 17 is inserted into the insertion slot 13, the clamping block 18 can be inserted out by its own elasticity to position the left side of the upper isolation cover 5, making the opening and closing more convenient and fast;

[0024] Please refer to Figure 1 , threading holes 11 are respectively opened on the left and right sides of the lower isolation cover 4. A sealing rubber ring 12 is adhesively bonded to the inner cavity of the threading hole 11. By setting the sealing rubber ring 12, it can be in close contact with the cable after passing through to prevent external air from entering the interior;

[0025] Please refer to Figure 1 , a reset switch 6 is fixedly connected to the front side of the top of the controller housing 9. By setting the reset switch 6, the alarm lamp 7 can be turned off by pressing the reset switch 6 after it is turned on. A dry battery module 8 is fixedly connected to the inner cavity of the rear side of the top of the controller housing 9. By setting the dry battery module 8, electrical energy can be provided for the alarm lamp 7;

[0026] Please refer to Figure 2 and Figure 3 , a sealing slot 19 is opened at the edge of the top of the base plate 1. By setting the sealing slot 19, the bottom of the lower isolation cover 4 can be inserted into the interior to improve the sealing effect at the bottom. A clamping block 18 is fixedly connected to the outer side of the positioning insertion plate 17;

[0027] Please refer to Figure 1 , a connecting hinge 10 is fixedly connected to the top of the right side of the lower isolation cover 4. By setting the connecting hinge 10, the lower isolation cover 4 and the upper isolation cover 5 can be movably connected. The top of the right side of the connecting hinge 10 is fixedly connected to the upper isolation cover 5.

[0028] During use, fix this fuse in a proper position, then pull the pull rods 22 on the front and rear sides outwards. The movable plug board 23 moves out of the positioning hole 25, and pull the lower isolation cover 4 outwards to separate it from the base plate 1. Subsequently, pass the cable wires through the middle holes of the sealing rubber rings 12 on the left and right sides respectively and connect them to the terminal posts on the left and right sides of the terminal block 15. After the connection is completed, fix the lower isolation cover 4 on the base plate 1. In this way, the lower isolation cover 4 and the upper isolation cover 5 at the top can isolate the terminal block 15 from the outside air, prevent the outside humid air and dust from contacting the terminal block 15 for moisture-proof and dust-proof protection, and effectively extend the service life of the fuse. When a short circuit occurs in the circuit, the fuse in the fuse tube 14 will melt, and high temperature will be generated during the melting process. Since the temperature sensor 16 is in contact with the fuse tube 14, the temperature sensor 16 can detect the high temperature generated by the fuse tube 14, and then transmit the signal to the controller housing 9. The controller housing 9 controls the alarm lamp 7 to work to emit warning lights to remind the maintenance personnel. In this way, the personnel can quickly and accurately find the fuse that has melted for replacement, effectively improving the replacement efficiency. When replacing, the personnel push the block 18 on the outside of the positioning plug board 17 inwards, push the inwards block 18 out of the clamping opening 24, and then push the upper isolation cover 5 upwards from the left. In this way, the top of the lower isolation cover 4 is opened and the personnel can replace the fuse tube 14.

[0029] To sum up: Through the combined use of the mounting shell 2, the positioning mechanism 3, the lower isolation cover 4, the upper isolation cover 5, the reset switch 6, the alarm lamp 7, the controller housing 9, the fuse tube 14 and the temperature sensor 16, this fuse with an isolation structure solves the problems of not having an isolation structure, being unable to perform moisture-proof and dust-proof, increasing the failure rate, affecting the service life, not having a warning reminder function, being unable to quickly locate accurately, and reducing the replacement efficiency.

Claims

1. A fuse with an isolation structure, comprising a base plate (1), characterized in that: The front and rear sides of the top of the base plate (1) are fixedly connected to a mounting shell (2), and the opposite sides of the front and rear mounting shells (2) are fixedly connected to a positioning mechanism (3). The inner cavity of the mounting shell (2) is plugged with a lower isolation cover (4), and the top of the right side of the lower isolation cover (4) is movably connected to an upper isolation cover (5). The top of the upper isolation cover (5) is penetrated and fixedly connected to a controller shell (9), and the bottom of the controller shell (9) is connected to a temperature sensor (16) by bolts. The middle of the top of the controller shell (9) is fixedly connected to an alarm light (7). The front and rear sides of the left side of the bottom of the upper isolation cover (5) are fixedly connected to a positioning plug plate (17), and the front and rear sides of the left side of the top of the lower isolation cover (4) are provided with a plug-in slot (13). The top of the base plate (1) is connected to a wiring seat (15) by bolts, and the top of the wiring seat (15) is plugged with a fuse tube (14).

2. A fuse with an isolation structure according to claim 1, characterized in that: The positioning mechanism (3) comprises a fixed shell (20), the inner cavity of the fixed shell (20) is slidably connected to a movable plug plate (23), the inner cavity of the movable plug plate (23) passes through the inner side of the mounting shell (2), the outer side of the movable plug plate (23) is respectively fixedly connected to a pull rod (22) and a positioning spring (21), and the outer side of the pull rod (22) passes through the outer side of the fixed shell (20) and is fixedly connected to a pull plate.

3. A fuse with an isolation structure according to claim 1, characterized in that: The bottoms of the front and rear sides of the lower isolation cover (4) are both provided with positioning holes (25), and the outer side of the inner cavity of the plug-in slot (13) is provided with a clamping opening (24).

4. A fuse with an isolation structure according to claim 1, characterized in that: The left and right sides of the lower isolation cover (4) are both provided with threading holes (11), and the inner cavities of the threading holes (11) are glued with sealing rubber rings (12).

5. The fuse with an isolation structure according to claim 1, characterized in that: A reset switch (6) is fixedly connected to the front side of the top of the controller shell (9), and a dry cell module (8) is fixedly connected to the inner cavity of the rear side of the top of the controller shell (9).

6. A fuse with an isolation structure according to claim 1, characterized in that: A sealing slot (19) is provided at the edge of the top of the base plate (1), and a clamping block (18) is fixedly connected to the outer side of the positioning plug plate (17).

7. The fuse with an isolation structure according to claim 1, characterized in that: The top of the right side of the lower isolation cover (4) is fixedly connected to a connecting hinge (10), and the top of the right side of the connecting hinge (10) is fixedly connected to the upper isolation cover (5).

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