Excitation fuse and power supply system

Abstract

The invention discloses an excitation fuse and a power supply system, and relates to the technical field of low-voltage apparatuses. The excitation fuse comprises a shell and an excitation source, a power device, a transmission piece and an indicating piece which are arranged in the shell, one end of the transmission piece can abut against the power device, the other end of the transmission piece is provided with the indicating piece, and the excitation source is used for triggering according to an excitation signal and driving the power device to move so as to cut off an electric loop. When the power device moves to a first position, the limiting force applied to the transmission part by the power device is relieved, and the transmission part can drive the indicating part to move, so that the position of the indicating part is changed to achieve state indication. According to the excitation fuse, the working state of the excitation fuse can be correspondingly displayed, so that a user can visually distinguish whether the excitation fuse works normally or is triggered from the outside, maintenance and replacement are facilitated, and the use safety is improved.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more specifically, to an excitation fuse and power supply system. Background Technology

[0002] An excitation-driven fuse is a fast-acting protective device that uses an excitation source to drive an insulator to cut the conductor, forming a physical break within a short time. The advantage of an excitation-driven fuse over a traditional fuse is that the breaking is actively controlled, and it can break quickly even under low fault current conditions.

[0003] Most existing excitation fuses adopt a fully sealed housing design, without a dedicated status indicator device inside the housing. This makes it difficult for users to quickly and accurately determine the working status of the excitation fuse, which adversely affects subsequent maintenance, inspection, and replacement operations. Summary of the Invention

[0004] The purpose of this application is to provide an excitation fuse and power supply system that can display the working status of the excitation fuse, so that users can intuitively distinguish from the outside whether the excitation fuse is working normally or has been triggered, thereby facilitating maintenance and replacement and improving safety.

[0005] The embodiments of this application are implemented as follows: A first aspect of this application provides an activated fuse, including a housing and an excitation source, a power device, a transmission component, and an indicator disposed within the housing. One end of the transmission component is abutted against the power device, and the other end is provided with the indicator. The excitation source is used to trigger the power device according to an excitation signal and drive the power device to move to cut off the power circuit. When the power device moves to a first position, the limiting force applied by the power device to the transmission component is released, and the transmission component can drive the indicator to move, so that the position of the indicator changes to indicate the status. This activated fuse can correspondingly display the working status of the activated fuse, allowing the user to intuitively distinguish from the outside whether the activated fuse is working normally or has been triggered, thereby facilitating maintenance and replacement and improving safety.

[0006] As one possible implementation, it also includes an elastic element disposed within the housing, with both ends of the elastic element connected to the housing and the transmission element respectively. When the indicator is in the normal position, the elastic element compresses and stores energy. When the power device moves to the first position, the elastic element releases energy to drive the transmission element to move.

[0007] In one possible implementation, the transmission component includes a fixedly connected or integrally formed abutment portion and a force-receiving portion. The end of the abutment portion away from the force-receiving portion abuts against the power device, and the side of the force-receiving portion away from the abutment portion abuts against the elastic element. The end of the force-receiving portion near the outside of the housing is fixedly connected or integrally formed with the indicator.

[0008] In one possible implementation, the housing is provided with a first accommodating cavity, a second accommodating cavity, a third accommodating cavity, and a fourth accommodating cavity that are connected in sequence. The excitation source and the power device are located in the first accommodating cavity, the abutting part is located in the second accommodating cavity, the force-receiving part and the elastic element are located in the third accommodating cavity, and the elastic element is located on the side of the force-receiving part away from the abutting part. The indicator is located in the fourth accommodating cavity. The abutting part is made of a flexible material or the abutting part is covered with a flexible material.

[0009] As one possible implementation, the number of elastic elements is at least one; when the number of elastic elements is multiple, the multiple elastic elements are evenly distributed along the extension direction of the force-bearing part; and / or, the elastic element is a spring or a sheet.

[0010] As one possible implementation, when the power unit continues to move toward the side away from the excitation source to the second position, the other end of the transmission member abuts against the side wall of the power unit again, so that the indicator remains in the fault position.

[0011] As one possible implementation, along the movement direction of the power device, the side wall of the power device is divided into a first limiting area and a second limiting area. When the indicator is in the normal position, the other end of the transmission member abuts against the first limiting area. When the indicator is in the fault position, the other end of the transmission member abuts against the second limiting area. A transition structure is provided between the first limiting area and the second limiting area. The transition structure includes at least one of a stepped surface, a guide slope, or a guide arc surface.

[0012] In one possible implementation, the indicator has an indicator surface, which includes a first area and a second area. An indicator window is provided on the housing. When the indicator window displays the first area, it corresponds to the normal working state of the power circuit. When the indicator window displays the second area, it corresponds to the fault state of the power circuit.

[0013] As one possible implementation, the indicator window is made of a transparent material, and the first area and the second area are respectively provided with indicator marks.

[0014] A second aspect of this application provides a power supply system including the aforementioned trigger fuse. The trigger fuse can display its operating status, allowing users to visually distinguish whether the fuse is operating normally or has been triggered, thus facilitating maintenance and replacement and improving safety.

[0015] The beneficial effects of the embodiments of this application include: The excitation fuse includes a housing and an excitation source, a power unit, a transmission component, and an indicator disposed within the housing. One end of the transmission component can abut against the power unit, and the other end is provided with the indicator. The excitation source is used to trigger according to an excitation signal and drive the power unit to move to cut off the power circuit. When the power unit moves to a first position, the limiting force applied by the power unit to the transmission component is released, and the transmission component can drive the indicator to move, so that the position of the indicator changes to realize the status display. The excitation fuse provided in this application reflects the status change of the excitation fuse through the position change of the indicator. Users can directly observe the status of the excitation fuse from the outside of the housing and quickly judge it without disassembling the housing, solving the problem of the unintuitive status change of traditional fuses. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 One of the structural schematic diagrams of the excitation fuse in normal operation provided in the embodiments of this application; Figure 2 A second schematic diagram illustrating the normal operation of the excitation fuse provided in this application embodiment; Figure 3 One of the schematic diagrams of the triggered fuse provided in the embodiments of this application; Figure 4 A second schematic diagram of the triggered fuse provided in this application embodiment; Figure 5 This is one of the structural schematic diagrams of the transmission component and the indicator component provided in the embodiments of this application; Figure 6 This is a second schematic diagram of the structure of the transmission component and the indicator component provided in the embodiments of this application.

[0018] Icons: 100-Actuating fuse; 10-Housing; 11-First receiving cavity; 12-Second receiving cavity; 13-Third receiving cavity; 14-Fourth receiving cavity; 15-Indicating window; 20-Actuating source; 30-Power unit; 31-First limiting area; 32-Second limiting area; 33-Transition structure; 40-Transmission component; 41-Abutting part; 42-Force-receiving part; 50-Indicating element; 51-First area; 52-Second area; 60-Elastic element. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0020] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. These terms are used only for the convenience of describing this application and for 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. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "horizontal," "vertical," etc., do not indicate that the component must be absolutely horizontal or suspended, but can be slightly tilted. The terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] Please refer to the reference. Figures 1 to 6This application provides an activated fuse 100, including a housing 10 and an excitation source 20, a power unit 30, a transmission member 40, and an indicator 50 disposed within the housing 10. One end of the transmission member 40 can abut against the power unit 30, and the other end is provided with the indicator 50. The excitation source 20 is used to trigger according to an excitation signal and drive the power unit 30 to move to cut off the power circuit. When the power unit 30 moves to a first position, the limiting force applied by the power unit 30 to the transmission member 40 is released, and the transmission member 40 can drive the indicator 50 to move, so that the position of the indicator 50 changes to indicate the status. This activated fuse 100 can display the working status of the activated fuse 100, allowing the user to intuitively distinguish from the outside whether the activated fuse 100 is working normally or has been triggered, thereby facilitating maintenance and replacement and improving safety.

[0023] It should be noted that the excitation fuse 100 includes a housing 10 and an excitation source 20, a power unit 30, a transmission component 40, and an indicator 50 disposed within the housing 10, forming a closed functional unit. One end of the transmission component 40 can abut against the power unit 30. In other words, when one end of the transmission component 40 is in contact with the power unit 30, the power unit 30 can apply a force to the transmission component 40. The other end of the transmission component 40 is provided with an indicator 50. For example, the indicator 50 can be fixedly connected to the transmission component 40, so that the motion energy of the transmission component 40 can be synchronously transmitted to the indicator 50.

[0024] The excitation source 20, acting as the triggering core, can receive external excitation signals (such as overcurrent signals, control commands, etc.) and respond accordingly, thereby driving the power device 30 to begin moving. This movement of the power device 30 cuts off the electrical circuit (e.g., separating the contacts of the moving and stationary contacts, or interrupting the current transmission in the conductor). When the power device 30 moves to the first position, the limiting force (i.e., the force restricting the movement of the transmission device 40) originally applied by the power device 30 is released. At this time, the transmission device 40 is no longer constrained by the power device 30 and can drive the indicator 50 to move, ultimately switching the indicator 50 from the normal position (corresponding to the normal working state of the excitation fuse 100) to the fault position (corresponding to the state where the excitation fuse 100 has been triggered), thus changing the position of the indicator 50 and indicating the status of the excitation fuse 100.

[0025] The excitation fuse 100 provided in this application has an indicator 50 in the normal position when the excitation fuse 100 is working normally, and in the fault position when the excitation fuse 100 has been triggered. Therefore, the change in the position of the indicator 50 reflects the change in the state of the excitation fuse 100. Specifically, by switching the indicator 50 from the normal position to the fault position (e.g., from being hidden inside the housing 10 to being exposed, or a change in the indicator marking), the user can directly observe the state of the excitation fuse 100 from outside the housing 10, allowing for quick judgment without disassembling the housing 100. This solves the problem of the lack of intuitiveness in the state changes of traditional fuses. This intuitive state differentiation prevents user misoperation (e.g., accidentally triggering a fuse that has not been replaced, leading to secondary circuit faults). Especially in complex circuit systems, it can shorten troubleshooting time and improve maintenance efficiency. At the same time, it avoids misjudging and replacing untriggered fuses, reducing unnecessary resource waste.

[0026] Moreover, in the excitation fuse 100 provided in this application, the movement of the power unit 30 not only realizes the core function of cutting off the power circuit, but also, through the position switching of the release limit force linkage indicator 50, organically combines the two functions of "circuit breaker protection" and "status indication" through the transmission component 40. It has the advantage of strong structural linkage, simplifies the overall structure, reduces independent control components, and improves the reliability of the device.

[0027] As one possible implementation method, such as Figure 2 and Figure 4 As shown, the excitation fuse 100 also includes an elastic element 60 disposed in the housing 10. The two ends of the elastic element 60 are connected to the housing 10 and the transmission element 40 respectively. When the indicator 50 is in the normal position, the elastic element 60 is compressed and stores energy. When the power device 30 moves to the first position, the elastic element 60 releases energy to drive the transmission element 40 to move.

[0028] It should be noted that the excitation fuse 100 also includes an elastic element 60 (such as a spring, sheet, or other component with elastic deformation capability) disposed within the housing 10. One end of the elastic element 60 is connected to the inner wall of the housing 10, and the other end of the elastic element 60 is connected to the transmission element 40. When the indicator 50 is in the normal position (i.e., the excitation fuse 100 is working normally), the elastic element 60 is in a compressed state and stores elastic potential energy. At this time, the limiting force applied by the power device 30 to the transmission element 40 can counteract the elastic force of the elastic element 60, keeping the transmission element 40 and the indicator 50 in the normal position. When the power device 30 moves to the first position due to the excitation source 20, the limiting force of the power device 30 on the transmission element 40 is released, and the elastic potential energy stored in the elastic element 60 is released instantaneously, so that the elastic element 60 returns from the compressed state to the natural state. The resulting elastic force can drive the transmission element 40 to move, and the transmission element 40 drives the indicator 50 to move, ultimately switching the indicator 50 from the normal position to the fault position.

[0029] In the above process, the elastic element 60, as the power source of the transmission element 40, can realize the state switching of the indicator 50 without affecting the core function of the power unit 30 in cutting off the power circuit. The elastic force of the elastic element 60 provides a stable and continuous driving force for the transmission element 40. Even if there is a small gap or frictional resistance between the power unit 30 and the transmission element 40, the elastic force can ensure that the transmission element 40 moves smoothly, avoiding the indicator 50 from jamming or incomplete state switching due to insufficient power, thus ensuring the reliability of the state indication. The elastic element 60 converts the action of "power unit 30 releasing the limit" into the power for "automatic movement of transmission element 40" by compressing and storing energy. There is no need to design a separate drive device (such as an additional motor or electromagnet) for the indicator 50, which simplifies the overall structure, reduces the number of parts and assembly complexity, and reduces the number of failure points.

[0030] The elastic element 60 releases energy rapidly, driving the transmission element 40 to move the instant the power unit 30 releases its limiting function. This allows the indicator 50 to quickly complete its state switching, achieving synchronous response between "circuit disconnection" and "status indication," avoiding misjudgments caused by time differences (e.g., the circuit is disconnected but the indicator 50 does not move, leading to user misjudgment). Furthermore, the driving force of the elastic element 60 is not significantly affected by external environmental factors (such as temperature and humidity). Compared to drive methods relying on electromagnetic or hydraulic forces, it can still operate stably in harsh environments (such as high temperature and humidity), ensuring that the indicator 50 accurately reflects the fuse's status under various operating conditions, thus improving the device's durability.

[0031] As one possible implementation method, such as Figure 2 , Figures 4 to 6As shown, the transmission component 40 includes a contact portion 41 and a force-receiving portion 42 that are fixedly connected or integrally formed. The end of the contact portion 41 away from the force-receiving portion 42 abuts against the power device 30, and the side of the force-receiving portion 42 away from the contact portion 41 abuts against the elastic member 60. The end of the force-receiving portion 42 near the outside of the housing 10 is fixedly connected or integrally formed with the indicator 50.

[0032] It should be noted that the transmission component 40 includes an abutment portion 41 and a force-receiving portion 42. The abutment portion 41 and the force-receiving portion 42 can be fixedly connected (such as by welding or bolting) or integrally formed (such as by injection molding or stamping to form an integral structure), forming a continuous force transmission component. The end of the abutment portion 41 away from the force-receiving portion 42 (i.e., one end of the transmission component 40) abuts against the power device 30. When the excitation fuse 100 is working normally, the power device 30 restricts the movement of the transmission component 40 through the abutment portion 41; when the power device 30 moves to the first position, the abutment portion 41 disengages from the power device 30 (or the pressure is released), and the limiting force disappears.

[0033] The side of the force-receiving part 42 away from the abutment part 41 (i.e., the side or end face of the transmission member 40) abuts against the elastic member 60, and the elastic force of the elastic member 60 acts on the transmission member 40 through the force-receiving part 42. When the indicator 50 is in the normal position, the elastic member 60 is compressed, and its elastic force is transmitted to the abutment part 41 through the force-receiving part 42, forming a balance with the limiting force of the power device 30; when the limiting force is released, the elastic force of the elastic member 60 pushes the force-receiving part 42, driving the entire transmission member 40 to move. The end of the force-receiving part 42 near the outside of the housing 10 (i.e., the other end of the transmission member 40) is fixedly connected to the indicator 50 (e.g., snap-fit, glued) or integrally formed, or is connected to the indicator 50 through transmission (e.g., gear transmission), so that the movement of the transmission member 40 can be directly transmitted to the indicator 50, realizing the switching of the indicator 50 from the normal position to the fault position.

[0034] The abutment part 41 and the force-receiving part 42 are fixedly connected or integrally formed, avoiding the loosening or displacement that may occur in the split structure. This ensures that the limiting force of the power device 30 and the driving force of the elastic element 60 can be efficiently transmitted through the transmission part 40, reducing force loss. Especially at the moment of energy release of the elastic element 60, the integrated structure can avoid the force transmission delay caused by the gap between the components, ensuring that the indicator 50 responds quickly. The abutment part 41 is used to cooperate with the power device 30 (to perform the limiting function), and the force-receiving part 42 is used to cooperate with the elastic element 60 and the indicator 50 (to perform the driving and transmission functions). The division of labor is clear and compact, making the transmission part 40 occupy less space in the housing 10, which is suitable for the miniaturization design of the fuse. At the same time, the end of the force-receiving part 42 near the outside of the housing 10 is connected to the indicator 50, so that the state changes of the indicator 50 can be observed from the outside of the housing 10.

[0035] As one possible implementation method, such as Figure 2 and Figure 4 As shown, the housing 10 is provided with a first receiving cavity 11, a second receiving cavity 12, a third receiving cavity 13 and a fourth receiving cavity 14 connected in sequence. The excitation source 20 and the power device 30 are located in the first receiving cavity 11, the abutting part 41 is located in the second receiving cavity 12, the force-receiving part 42 and the elastic member 60 are located in the third receiving cavity 13, and the elastic member 60 is located on the side of the force-receiving part 42 away from the abutting part 41. The indicator 50 is located in the fourth receiving cavity 14. The abutting part 41 is made of a flexible material or the abutting part 41 is covered with a flexible material.

[0036] It should be noted that the housing 10 is provided with a first receiving cavity 11, a second receiving cavity 12, a third receiving cavity 13, and a fourth receiving cavity 14 connected in sequence. The four sequentially connected receiving cavities house the excitation source 20, the power device 30, the transmission component 40 (including the abutment part 41 and the force receiving part 42), the elastic component 60, and the indicator 50 according to their functional areas, avoiding motion interference caused by the messy stacking of components (such as the action of the power device 30 will not directly collide with the indicator 50); at the same time, the connectivity of each receiving cavity ensures that force and motion energy are transmitted along a preset path (from the first receiving cavity 11 to the fourth receiving cavity 14), improving the orderliness and reliability of the structure. The abutting part 41 is located in the second receiving cavity 12, and the force-receiving part 42 and the elastic member 60 are located in the third receiving cavity 13. The partitioned arrangement allows the elastic force of the elastic member 60 and the limiting force of the power device 30 to be concentrated on the corresponding parts of the transmission member 40 (the elastic force acts on the force-receiving part 42, and the limiting force acts on the abutting part 41), reducing the dispersion of force. At the same time, the inner wall of the receiving cavity can guide the movement of the transmission member 40 (such as limiting the offset of the transmission member 40), ensuring that it moves along a straight line or a preset trajectory and avoiding jamming.

[0037] The contact portion 41 is made of a flexible material (such as rubber or silicone) or is covered with a flexible material (such as flexible plastic or elastic coating) to give it a certain deformation capability when it comes into contact with the power device 30. When the excitation fuse 100 is working normally, the flexible contact can reduce the wear of components caused by long-term contact (such as the scraping of the edge of the power device 30 against the contact portion 41); when the power device 30 moves, the flexible material can absorb the impact force at the moment of contact, reduce noise, and at the same time avoid the deformation of components caused by rigid collisions (such as the breakage of the contact portion 41 or the misalignment of the power device 30); it can also improve the sealing between the first receiving cavity 11 and the second receiving cavity 12 to ensure that the protective function of the housing 10 for the excitation source 20 is not affected by the addition of the indicator 50.

[0038] As one possible implementation method, such as Figure 2 and Figure 4As shown, the number of elastic elements 60 is at least one. When the number of elastic elements 60 is multiple, the multiple elastic elements 60 are evenly distributed along the extension direction of the force-bearing part 42; and / or, the elastic element 60 is a spring or a sheet.

[0039] It should be noted that the number of elastic elements 60 is at least one, but multiple elements can be set according to the driving force requirements. When there are multiple elastic elements 60, they can be evenly distributed along the extension direction of the force-receiving part 42, so that the elastic force can be evenly applied to the force-receiving part 42 along the extension direction of the force-receiving part 42. This avoids tilting or jamming of the transmission part 40 due to single-point force, ensuring that it moves smoothly along the preset trajectory, thereby ensuring the smoothness of the switching state of the indicator 50. For example, the force-receiving part 42 is elongated, and multiple elastic elements 60 can be arranged at equal intervals on the side of the force-receiving part 42 away from the abutment part 41. The two ends of each elastic element 60 are connected to the housing 10 and the force-receiving part 42, respectively.

[0040] The elastic element 60 can be a spring (such as a compression spring, which stores energy through axial compression) or a sheet (such as a metal sheet, which stores energy through bending deformation). Both can store elastic potential energy through deformation and generate a spring force to drive the transmission element 40 when the energy is released. Both types of elastic elements 60 can be stably connected to the housing 10 and the force-bearing part 42 (such as spring hook connection or sheet welding) to adapt to different structural layout requirements.

[0041] As one possible implementation method, such as Figure 2 and Figure 4 As shown, when the power unit 30 continues to move toward the side away from the excitation source 20 to the second position, the other end of the transmission member 40 abuts against the side wall of the power unit 30 again, so that the indicator 50 remains in the fault position. Alternatively, in other embodiments, when the power unit 30 continues to move toward the side away from the excitation source 20 to the second position, the transmission member 40 is positionally limited only by the limiting effect of the inner wall of the receiving cavity.

[0042] It should be noted that after the excitation source 20 is triggered, the power unit 30 first moves from the initial position to the first position. At this time, the power unit 30 releases the limiting force on the transmission component 40, causing the elastic element 60 to release energy and drive the transmission component 40 to move. The indicator 50 can then switch to the fault position. Subsequently, the power unit 30 continues to move away from the excitation source 20. When the power unit 30 reaches the second position, the other end of the transmission component 40 re-forms contact with the side wall of the power unit 30. At this time, the side wall of the power unit 30 applies a new limiting force to the transmission component 40, and the transmission component 40 is fixed in the current position. This ensures that the indicator 50 connected to it remains stably in the fault position and will not return to the normal position due to vibration, impact, or fatigue of the elastic element 60. This ensures that the state observed from the outside is always consistent with the actual working state (triggered) of the excitation fuse 100, avoiding misjudgment by the user.

[0043] As one possible implementation method, such as Figure 2 and Figure 4 As shown, along the movement direction of the power device 30, the side wall of the power device 30 is divided into a first limiting area 31 and a second limiting area 32. When the indicator 50 is in the normal position, the other end of the transmission member 40 abuts against the first limiting area 31. When the indicator 50 is in the fault position, the other end of the transmission member 40 abuts against the second limiting area 32. A transition structure 33 is provided between the first limiting area 31 and the second limiting area 32. The transition structure 33 includes at least one of a stepped surface, a guide slope, or a guide arc surface.

[0044] It should be noted that along the direction of movement of the power unit 30 (i.e., from the initial position of the power unit 30 toward the second position away from the excitation source 20), the sidewall of the power unit 30 is divided into a first limiting region 31 and a second limiting region 32 with different functions, which are connected by a transition structure 33. When the indicator 50 is in the normal position (i.e., the excitation fuse 100 is working normally), the other end of the transmission member 40 abuts against the first limiting region 31. At this time, the power unit 30 applies a limiting force to the transmission member 40 through the first limiting region 31, counteracting the elastic force of the elastic member 60, so that the transmission member 40 and the indicator 50 remain in the normal position. When the indicator 50 is in the fault position (i.e., the excitation fuse 100 has been triggered), the other end of the transmission member 40 abuts against the second limiting region 32. At this time, the power unit 30 has moved to the second position, and applies a new limiting force to the transmission member 40 through the second limiting region 32, preventing the transmission member 40 from moving in the opposite direction, ensuring that the indicator 50 is stably maintained in the fault position.

[0045] The transition structure 33 between the first limiting region 31 and the second limiting region 32 is used to guide the transmission component 40 to switch smoothly between the two. Its form includes at least one of the following structures: First, a stepped surface, which divides the region by a step perpendicular to the direction of movement. The height of the step is adapted to the movement stroke of the transmission component 40 to ensure clear limiting during switching; Second, a guide ramp, a plane inclined along the direction of movement of the power device 30, which guides the transmission component 40 to gradually slide from the first region to the second region as the power device 30 moves, reducing jamming; Third, a guide arc surface, an arc-shaped transition surface along the direction of movement of the power device 30, which buffers the contact stress of the transmission component 40 through the curved surface, making the switching process smoother.

[0046] As one possible implementation method, such as Figures 1 to 4As shown, the indicator 50 has an indicator surface, which includes a first region 51 and a second region 52. An indicator window 15 is provided on the housing 10. When the indicator window 15 displays the first region 51, it indicates the normal operating state of the applied electrical circuit; when the indicator window 15 displays the second region 52, it indicates the fault state of the applied electrical circuit. As one possible implementation, such as... Figure 1 and Figure 3 As shown, the indicator window 15 is made of transparent material, and the first area 51 and the second area 52 are respectively provided with indicator signs.

[0047] It should be noted that the indicator 50 has an indicator surface for displaying the status, which is divided into two functional areas: a first area 51 (corresponding to the normal working state of the activated fuse 100) and a second area 52 (corresponding to the activated fuse 100 being triggered). The two areas can be distinguished by different colors (e.g., green for the first area 51 and red for the second area 52), patterns (e.g., ○ for the first area 51 and × for the second area 52), or text markings (e.g., normal for the first area 51 and triggered for the second area 52). The housing 10 is provided with an indicator window 15 (which can be a transparent area, a perforated window, or an opening with a transparent cover) corresponding to the position of the indicator surface. The size of the indicator window 15 matches the size of a single area (first area 51 or second area 52) of the indicator surface, ensuring that the corresponding area of ​​the indicator surface can be clearly observed from the outside through the window.

[0048] When the indicator window 15 displays the first area 51, the user sees the markings (such as green, ○, normal) of the first area 51 in the window, indicating that the fuse is in normal working condition. When the indicator window 15 displays the second area 52, the user sees the markings (such as red, ×, triggered) of the second area 52 in the window, indicating the fault condition of the application circuit. The user can directly observe the current status through the indicator window 15 without disassembling the fuse 100 housing 10, thus solving the problem of concealed status and difficulty in judging traditional fuses.

[0049] This application also provides a power supply system including the aforementioned excitation fuse 100. Since the structure and beneficial effects of the excitation fuse 100 have been described in detail in the foregoing embodiments, they will not be repeated here.

[0050] The above description is merely an optional embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0051] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not describe the various possible combinations separately.

Claims

1. An excitation fuse, characterized in that, The device includes a housing (10) and an excitation source (20), a power unit (30), a transmission component (40), and an indicator (50) disposed within the housing (10). One end of the transmission component (40) can abut against the power unit (30), and the other end is provided with the indicator (50). The excitation source (20) is used to trigger according to the excitation signal and drive the power unit (30) to move to cut off the power circuit. When the power unit (30) moves to the first position, the limiting force applied by the power unit (30) to the transmission component (40) is released, and the transmission component (40) can drive the indicator (50) to move so that the position of the indicator (50) changes to achieve status indication.

2. The excitation fuse according to claim 1, characterized in that, It also includes an elastic element (60) disposed in the housing (10), the two ends of the elastic element (60) being connected to the housing (10) and the transmission element (40) respectively. When the indicator (50) is in the normal position, the elastic element (60) compresses and stores energy. When the power device (30) moves to the first position, the elastic element (60) releases energy to drive the transmission element (40) to move.

3. The excitation fuse according to claim 2, characterized in that, The transmission component (40) includes a fixedly connected or integrally formed abutment portion (41) and a force-receiving portion (42). The end of the abutment portion (41) away from the force-receiving portion (42) abuts against the power device (30). The side of the force-receiving portion (42) away from the abutment portion (41) abuts against the elastic member (60). The end of the force-receiving portion (42) near the outside of the housing (10) is fixedly connected or integrally formed with the indicator (50).

4. The excitation fuse according to claim 3, characterized in that, The housing (10) is provided with a first accommodating cavity (11), a second accommodating cavity (12), a third accommodating cavity (13) and a fourth accommodating cavity (14) connected in sequence. The excitation source (20) and the power device (30) are located in the first accommodating cavity (11). The abutting part (41) is located in the second accommodating cavity (12). The force-receiving part (42) and the elastic element (60) are located in the third accommodating cavity (13). The elastic element (60) is located on the side of the force-receiving part (42) away from the abutting part (41). The indicator (50) is located in the fourth accommodating cavity (14). The abutting part (41) is made of a flexible material or the abutting part (41) is covered with a flexible material.

5. The excitation fuse according to claim 3 or 4, characterized in that, The number of elastic elements (60) is at least one. When the number of elastic elements (60) is multiple, the multiple elastic elements (60) are evenly distributed along the extension direction of the force-bearing part (42); and / or, the elastic element (60) is a spring or a sheet.

6. The excitation fuse according to any one of claims 1 to 4, characterized in that, As the power unit (30) continues to move toward the side away from the excitation source (20) to the second position, the other end of the transmission member (40) abuts against the side wall of the power unit (30) again, so that the indicator (50) remains in the fault position.

7. The excitation fuse according to claim 6, characterized in that, Along the direction of movement of the power device (30), the side wall of the power device (30) is divided into a first limiting area (31) and a second limiting area (32). When the indicator (50) is in the normal position, the other end of the transmission member (40) abuts against the first limiting area (31). When the indicator (50) is in the fault position, the other end of the transmission member (40) abuts against the second limiting area (32). A transition structure (33) is provided between the first limiting area (31) and the second limiting area (32). The transition structure (33) includes at least one of a stepped surface, a guide slope, or a guide arc surface.

8. The excitation fuse according to any one of claims 1 to 4, characterized in that, The indicator (50) has an indicator surface, which includes a first area (51) and a second area (52). The housing (10) is provided with an indicator window (15). When the indicator window (15) displays the first area (51), it corresponds to the normal working state of the power circuit. When the indicator window (15) displays the second area (52), it corresponds to the fault state of the power circuit.

9. The excitation fuse according to claim 8, characterized in that, The indicator window (15) is made of transparent material, and the first area (51) and the second area (52) are respectively provided with indicator marks.

10. A power supply system, characterized in that, Includes the excitation fuse (100) as described in any one of claims 1 to 9.

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