Fuse with indicating lamp

Abstract

According to the fuse with the indicating lamp provided by the utility model, a detachable structure in which the base is separated from the fuse main body is adopted, and when the fuse is damaged, only the fuse main body or a damaged part needs to be replaced, the whole replacement is not needed, the maintenance cost is reduced, and the downtime is shortened. According to the functions of the internal integrated circuit board and the indicator lamp, the lamp bead is lightened when the fuse works normally, the lamp bead is extinguished when the fuse is fused or damaged, and a user can visually judge the fault state through the transparent window. In addition, the fuse replacement mode is simple, a user only needs to disassemble the supporting feet and the connecting wires, and the fuse is reinstalled after being replaced by a new fuse, so that the maintenance time is greatly shortened. Meanwhile, the fuse base adopts a modular splicing design, the sockets are stably connected through a plug-in structure, the number of the sockets can be adjusted according to requirements, compatibility and expansibility are enhanced, and the fuse base is suitable for circuit systems of different specifications. Therefore, the fuse has the advantages of being detachable, visual in indication, convenient to maintain, high in adaptability and the like.

Description

Technical Field

[0001] This utility model relates to the field of electrical protection device technology, specifically to a fuse with an indicator light. Background Technology

[0002] Fuses are essential protective components widely used in power systems and electronic equipment. Their primary function is to quickly disconnect the circuit when the current exceeds safe limits, thus preventing damage to electrical equipment or accidents. However, existing fuses still present some problems during use, particularly in maintenance and replacement. Traditional fuses typically employ an integrated design; once a fuse fails, the entire fuse unit needs to be replaced, increasing maintenance costs and potentially causing prolonged equipment downtime, disrupting normal operation. Furthermore, some fuses lack status indicators, making it difficult for users to visually determine if a fuse has malfunctioned, increasing the difficulty and time cost of troubleshooting. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a fuse with an indicator light, which effectively improves the limitations of some traditional fuses in maintenance and use, and improves the convenience of fault detection and maintenance efficiency.

[0004] A fuse with an indicator light includes a base and a fuse body. The base includes a detachably connected first socket, a second socket, and a predetermined number of third sockets. A first connecting structure is provided on one side of the first socket and one side of the third sockets. A second connecting structure adapted to the first connecting structure is provided on one side of the second socket and the other side of the third sockets. A receiving space is provided in the middle of the first socket, the second socket, and the third sockets. A busbar is detachably installed within the receiving space. Receiving cavities are provided on the sides of the first socket, the second socket, and the third sockets. The cavity contains detachable wiring terminals, and the first socket, the second socket, and the third socket are provided with plug-in interfaces in the middle. The fuse body is connected to the base via the plug-in interfaces. It includes a detachable outer shell and a fuse disposed within the outer shell. Both ends of the fuse are connected to a leg via a connecting structure. A wire is detachably installed at each end of the fuse. The wire is connected to a circuit board. An LED is disposed on the circuit board. The outer shell contains a snap-fit ​​structure for snapping the circuit board and the fuse. The top of the outer shell has a viewing window facing the LED.

[0005] Preferably, the cross-sections of the first socket, the second socket, and the third socket are U-shaped, and the recessed square groove in the middle is a socket for accommodating the fuse body.

[0006] Preferably, the square groove in the middle of the first socket, the second socket, and the third socket are all provided with semi-square insertion holes. When the first socket, the second socket, and the third socket are spliced ​​together, the semi-square insertion holes form a complete insertion interface.

[0007] Preferably, the first socket and the third socket have elastic retractable balls on the sidewalls of their receiving slots, and the fuse has a semi-circular groove on the sidewalls of its housing that is adapted to the elastic retractable balls.

[0008] Preferably, the support leg includes a tubular connecting part and a plug-in pin welded to the bottom of the tubular connecting part. The plug-in pins of the two support legs are arranged parallel to each other. The connecting structure is provided on the inner side of the tubular connecting part and on the outer side of both ends of the fuse body.

[0009] Preferably, the connection structure is a threaded connection structure or a snap-fit ​​connection structure.

[0010] Furthermore, the snap-fit ​​connection structure includes a V-shaped clip disposed inside the tubular connection portion and V-shaped clips disposed outside both ends of the fuse body. The opening direction of the V-shaped clip inside the tubular connection portion is opposite to and offset from the opening direction of the V-shaped clips outside both ends of the fuse body.

[0011] Preferably, the snap-fit ​​structure includes ribs disposed inside the housing.

[0012] Preferably, the outer shell includes a square box body with one end open and a square fastening plate. The side of the square box body is provided with a plurality of limiting posts. Each limiting post includes a columnar insertion interface. The side wall of the columnar insertion interface is recessed with an annular receiving groove. One side of the square fastening plate is provided with an insertion post that engages with the limiting post. The insertion post is conical in shape, and the side wall of the insertion post is provided with an annular rubber ring that engages with the annular receiving groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention provides a fuse with an indicator light, featuring a detachable structure where the base is separate from the fuse body. This allows for replacement of only the fuse body or the damaged component when the fuse fails, eliminating the need to replace the entire fuse assembly. This significantly reduces maintenance and replacement costs, minimizes downtime due to equipment repairs, and improves service life and economic efficiency. Furthermore, the fuse body integrates a circuit board and indicator light. The light remains illuminated when the fuse is working normally, and turns off when the fuse wire blows or fails. Users can visually assess the fuse's status through a transparent window on the top of the casing, enabling timely fault detection. This avoids the complex process of using measuring tools or step-by-step circuit troubleshooting required with traditional fuses, greatly improving maintenance efficiency and reducing repair time and labor costs. Furthermore, when the fuse fails, the user only needs to remove the support legs and wiring, replace the fuse, and then reinstall the support legs and wiring onto the new fuse and into the housing to complete the replacement. This modular disassembly and assembly method significantly reduces maintenance time, allowing users to replace only the damaged part without replacing the entire fuse assembly, thus reducing equipment downtime and improving the convenience and economy of maintenance. Simultaneously, the base of this invention adopts a modular splicing design, including a detachable first socket, a second socket, and multiple third sockets. The sockets are securely connected by a plug-in structure, and the number of sockets can be adjusted according to needs, enabling the fuse to adapt to different specifications and configurations of circuit systems, providing stronger compatibility and expandability, and suitable for various application scenarios. Therefore, this fuse with indicator lights not only features easy disassembly and replacement but also intuitively displays the fuse status, improving maintenance efficiency and reducing maintenance costs and equipment downtime. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a splicing structure for the base described in this utility model;

[0016] Figure 2 This is a schematic diagram of the disassembled structure of the base described in this utility model;

[0017] Figure 3 This is a schematic diagram of the disassembled, bottom-view structure of the base described in this utility model;

[0018] Figure 4 This is a schematic diagram of the fuse body described in this utility model;

[0019] Figure 5 This is a schematic diagram of the disassembled structure of the fuse described in this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the support leg described in this utility model;

[0021] in:

[0022] 10-First socket, 20-Second socket, 30-Third socket, 11-T-shaped slot, 12-Plug-in part, 13-T-shaped plug post, 14-Strip plug-in part, 15-Snap-in plate, 16-Semi-square plug hole, 17-Receiving cavity, 18-Receiving space, 40-Housing shell, 41-Feet, 50-Fuse, 51-Wiring, 52-Circuit board, 53-Window, 54-Tube-shaped connection part, 55-Plug-in pin. Detailed Implementation

[0023] The embodiments described below are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0024] See Figure 1 as well as Figure 2 This embodiment provides a fuse with an indicator light, comprising a base and a fuse body. The base includes a detachably connected first socket 10, a second socket 20, and a predetermined number of third sockets 30. A first connecting structure is provided on one side of the first socket 10 and one side of the third socket 30. A second connecting structure adapted to the first connecting structure is provided on one side of the second socket 20 and the other side of the third socket 30. A receiving space is provided in the middle of the first socket 10, the second socket 20, and the third socket 30, and a busbar is detachably installed in the receiving space. A receiving cavity is provided on the side of the first socket 10, the second socket 20, and the third socket 30, and a detachable... The device is equipped with a terminal block 51 that connects to the busbar. The first socket 10, the second socket 20, and the third socket 30 are provided with a plug-in interface in the middle. The fuse body is connected to the base through the plug-in interface. It includes a detachable housing 40 and a fuse 50 disposed in the housing 40. Both ends of the fuse 50 are connected to a leg 41 through a connecting structure. A terminal block 51 is detachably installed at each end of the fuse 50. The terminal block 51 is connected to a circuit board 52. An LED bead is disposed on the circuit board 52. The housing 40 is provided with a snap-fit ​​structure for snapping the circuit board 52 and the fuse 50. A viewing window 53 is provided on the top of the housing 40, facing the LED bead.

[0025] It should be noted that when using one fuse body, only one first socket 10 and one second socket 20 need to be spliced ​​together to form a base. When using two fuse bodies, only one first socket 10, one second socket 20 and one third socket 30 need to be spliced ​​together to form a base. Each time an additional fuse body is added, one more third socket 30 is added. When splicing, one or more third sockets 30 are spliced ​​in the middle, and the first socket 10 and the second socket 20 are arranged on both sides.

[0026] Preferably, the cross-sections of the first socket 10, the second socket 20, and the third socket 30 are U-shaped, with the central recessed square groove serving as a socket for the fuse body. Preferably, each of the three sockets has a semi-square socket hole 16 in the central square groove. When the first socket 10, the second socket 20, and the third socket 30 are joined together, the semi-square socket holes 16 form a complete socket interface. This interface is used for the two prongs 41 of the fuse body to be inserted, enabling the fuse body to be stably connected to the circuit and achieving reliable electrical contact.

[0027] Preferably, the sidewalls of the receiving slots of the first socket 10 and the third socket 30 are provided with elastic retractable balls, and the sidewall of the outer shell 40 of the fuse body is provided with a semi-circular groove adapted to the elastic retractable balls. Providing elastic retractable balls on the sidewalls of the receiving slots of the first socket 10 and the third socket 30 allows them to apply appropriate clamping force when the fuse body is inserted, effectively improving the fixing stability of the fuse body and preventing loosening or poor contact of the fuse body due to vibration or external forces, thereby improving the safety and reliability of the circuit system. The elastic retractable ball includes a telescopic seat, a telescopic spring, and a ball. The telescopic seat includes a telescopic hole, the bottom of which is connected to the telescopic spring, and the other end of which is connected to the ball. The ball protrudes from the hole of the telescopic seat. When the ball retracts into the telescopic seat, the telescopic spring is compressed; when the ball protrudes from the telescopic seat, the telescopic spring returns to its original position.

[0028] Preferably, the support leg 41 includes a tubular connecting portion 54 and a plug-in pin 55 welded to the bottom of the tubular connecting portion 54. The plug-in pins 55 of the two support legs 41 are arranged parallel to each other. The connecting structure is provided on the inner side of the tubular connecting portion 54 and on the outer side of both ends of the fuse body. Preferably, the connecting structure is a threaded connection structure or a snap-fit ​​connection structure. The specific threaded connection structure (i.e., the inner side of the tubular connecting portion 54 is provided with internal threads, and the two ends of the fuse body are provided with external threads) provides high-strength connection force, ensuring the connection reliability and circuit connection of the fuse 50 in the working state.

[0029] Furthermore, the snap-fit ​​connection structure includes a V-shaped clip disposed inside the tubular connecting part 54 and V-shaped clips disposed on the outer sides of both ends of the fuse body. The opening direction of the V-shaped clip inside the tubular connecting part 54 is opposite to and offset from the opening direction of the V-shaped clips on the outer sides of both ends of the fuse body. During connection, the tubular connecting part 54 is fitted into both ends of the fuse body, and the V-shaped clips are compressed, thereby generating an outward expansion force. This ensures the tightness of the connection and effectively avoids loosening or detachment due to vibration, impact, or temperature changes. The expansion force makes the connection more secure, improving the durability of the fuse 50 under high load or complex working environments. In addition, the offset arrangement of the V-shaped clips increases the reliability of the connection, preventing the snap-fit ​​from loosening due to misoperation or external force. During the connection process, the unique shape and relatively offset layout of the V-shaped clips provide uniform and strong pressure, ensuring a firm connection between the fuse body and the support leg 41, thereby improving the stability and safety of the overall equipment. Therefore, the fuse 50 with this snap-fit ​​connection structure is not only convenient and quick to install and replace, reducing the complexity of manual operation, but also maintains an efficient and reliable connection during long-term use, improving the service life, working performance and maintenance efficiency of the equipment.

[0030] Preferably, the snap-fit ​​structure includes ribs disposed inside the housing 40. The ribs effectively confine the fuse 50 and circuit board 52 within the housing 40, preventing loosening or displacement during use. This structural stability helps ensure that the fuse 50 does not experience poor contact with the circuit board 52 due to vibration, impact, or external disturbances during operation, thereby improving the reliability and safety of the fuse 50. Furthermore, the rib configuration allows for accurate positioning of the fuse 50 and circuit board 52 during assembly, improving assembly precision and avoiding the risk of deviations or improper connections during installation. The confining effect of the ribs effectively maintains the relative position of the fuse 50 and circuit board 52, ensuring the normal operation of functional modules such as indicator lights and reducing malfunctions caused by component displacement.

[0031] Preferably, the outer casing 40 includes a square box body with one end open and a square fastening plate. The square box body has multiple limiting posts on its side, each limiting post including a columnar insertion interface. The side wall of the columnar insertion interface has a recessed annular receiving groove. One side of the square fastening plate has a conical insertion post that engages with the limiting posts. The side wall of the insertion post has an annular rubber ring that engages with the annular receiving groove. The columnar insertion interface and annular receiving groove design of the limiting posts allow the square fastening plate and the square box body to be accurately inserted, ensuring a tight connection between the various parts of the outer casing 40, while also facilitating disassembly.

[0032] Preferably, the wiring 51 is connected by a connector or by pre-reserving a copper wire 51, and then tightening the copper wire 51 with the wiring 51 to achieve the connection.

[0033] Preferably, the first connection structure includes a T-shaped slot 11 and a plug-in portion 12 disposed on the first socket 10 and the third socket 30. The plug-in portion 12 is open on both the splicing side and the bottom side. The top surface and two opposite sides of the inner side of the plug-in portion 12 are recessed with strip-shaped grooves. The second connection structure includes a T-shaped plug-in post and a strip-shaped plug-in member disposed on the second socket 20 and the third socket 30. The T-shaped plug-in post is covered with rubber. A snap-fit ​​plate is connected to the end of the strip-shaped plug-in member 14, and rubber is fitted on the snap-fit ​​plate. When the base is spliced, the T-shaped plug-in posts 13 on both sides are inserted into the T-shaped slot 11 from the bottom side. At the same time, the rubber covering the T-shaped plug-in posts 13 ensures that the T-shaped plug-in posts 13 can be firmly installed in the T-shaped slot 11, avoiding loosening due to vibration or external force. As the T-shaped plug 13 is continuously inserted upward into the T-shaped slot 11, the strip-shaped plug 14 enters the plug part 12 from the opening on one side of the bottom of the plug part 12. As the T-shaped plug 13 rises, the strip-shaped plug 14 also rises and gets into the plug part 12. When the T-shaped plug 13 is fully inserted into the T-shaped slot 11, the strip-shaped plug 14 is fully inserted into the plug part 12. At this time, the snap-fit ​​plate 15 provided at the end of the strip-shaped plug 14 snaps into the strip groove of the plug part 12. The rubber at the snap-fit ​​plate 15 ensures that the snap-fit ​​plate 15 and the strip groove are tightly connected, and the splicing is completed.

[0034] This utility model provides a fuse 50 with an indicator light, which adopts a detachable structure where the base is separate from the fuse body. This allows for replacement of only the fuse body or the damaged component when the fuse 50 fails, eliminating the need to replace the entire fuse 50 device. This significantly reduces maintenance and replacement costs, minimizes downtime due to equipment repairs, and improves service life and economic efficiency. Furthermore, the fuse body integrates a circuit board 52 and an indicator light. When the fuse 50 is working normally, the indicator light remains lit; when the fuse wire blows or fails, the light goes out. Users can visually assess the status of the fuse 50 through the transparent window 53 on the top of the housing 40, enabling timely fault detection. This avoids the complex process of using measuring tools or step-by-step circuit troubleshooting required with traditional fuses, greatly improving maintenance efficiency and reducing repair time and labor costs. Furthermore, when fuse 50 fails, the user only needs to remove the support leg 41 and wiring 51, replace the fuse 50, and then reinstall the support leg 41 and wiring 51 onto the new fuse 50 and into the housing 40 to complete the replacement. This modular disassembly and assembly method significantly reduces maintenance time, allowing users to replace only the damaged parts without replacing the entire fuse 50 device, thus reducing equipment downtime and improving the convenience and economy of maintenance. Simultaneously, the base of this utility model adopts a modular splicing design, including a detachable first socket 10, a second socket 20, and multiple third sockets 30. The sockets are securely connected by a plug-in structure, and the number of sockets can be adjusted according to needs, enabling fuse 50 to adapt to different specifications and configurations of circuit systems, providing stronger compatibility and expandability, and suitable for various application scenarios. Therefore, this fuse 50 with indicator lights not only features easy disassembly and replacement but also intuitively displays the status of fuse 50, improving maintenance efficiency and reducing maintenance costs and equipment downtime.

[0035] The above-disclosed embodiments are merely some preferred embodiments of the present utility model, and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A fuse with an indicator light, characterized by: The fuse base comprises a first socket, a second socket and a third socket which are detachably connected, the first socket and the third socket are provided with first connecting structures on one side, the second socket and the third socket are provided with second connecting structures on the other side which are matched with the first connecting structures, the middle part of the first socket, the second socket and the third socket is provided with a receiving space in which a copper busbar is detachably installed, the side of the first socket, the second socket and the third socket is provided with a receiving cavity in which a terminal is detachably installed, and the middle part of the first socket, the second socket and the third socket is provided with a plug-in interface. The fuse body is connected with the base through the plug-in interface, and comprises a detachable shell, a fuse provided in the shell, a leg connected to each end of the fuse through a connecting structure, a wire detachably connected to each end of the fuse, a circuit board connected with the wire, a lamp bead provided on the circuit board, and a clamping structure provided in the shell for clamping the circuit board and the fuse, and a window provided on the top of the shell and facing the lamp bead. The cross section of the first socket, the second socket and the third socket is in the shape of "concave", and the concave square groove in the middle part is a receiving plug-in groove for the fuse body.

2. The fuse with an indicator as defined in claim 1, wherein The first socket, the second socket and the third socket are provided with a half-square plug-in hole on the square groove in the middle part, and the half-square plug-in holes are opposite to form a complete plug-in interface when the first socket, the second socket and the third socket are connected.

3. The fuse with indicator light of claim 2, wherein, The side wall of the receiving plug-in groove of the first socket and the third socket is provided with an elastic shrinkage ball, and the side wall of the shell of the fuse body is provided with a semicircular groove matched with the elastic shrinkage ball.

4. The fuse with an indicator according to claim 1, wherein The leg comprises a tubular connecting part and a plug-in leg welded to the bottom of the tubular connecting part, the plug-in legs of the two legs are arranged in parallel, and the inner side of the tubular connecting part and the outer side of the two ends of the fuse body are provided with the connecting structure.

5. The fuse with an indicator according to claim 1, wherein The connecting structure is a threaded connection structure or a buckle connection structure.

6. The fuse with an indicator light according to claim 5, wherein The buckle connection structure comprises a V-shaped card provided on the inner side of the tubular connecting part and a V-shaped card provided on the outer side of the two ends of the fuse body, and the opening direction of the V-shaped card on the inner side of the tubular connecting part is opposite to and offset from the opening direction of the V-shaped card on the outer side of the two ends of the fuse body.

7. The fuse with indicator light of claim 6, wherein, The clamping structure comprises a rib provided in the shell.

8. The fuse with an indicator light according to claim 1, wherein The shell comprises a square box body with an open end and a square fastening plate, the side of the square box body is provided with a plurality of limiting columns, the limiting column comprises a columnar plug-in interface, the side wall of the columnar plug-in interface is recessed with a ring-shaped receiving groove, one side of the square fastening plate is provided with a plug-in column matched with the limiting column, the plug-in column is conical, and the side wall of the plug-in column is provided with a ring-shaped rubber ring matched with the ring-shaped receiving groove.

9. The fuse with an indicator light according to claim 1, wherein ​

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