A photovoltaic fuse

Abstract

The utility model relates to the technical field of fuse, disclose a photovoltaic fuse, including protection mechanism, the protection mechanism left side kit has clamping mechanism, the clamping mechanism left side is provided with extension mechanism, the utility model discloses a protection mechanism is set up, in the process of using, when temperature is too high, the temperature sensing particle can melt, because the base plate and the slide connection of the fuse pipe, the circuit spring is connected with the connecting plate, so when the temperature sensing particle melts, the circuit spring will push the base plate and move, because the base plate and the column of resistance are connected, and the gasket is connected with the column of resistance, so the base plate moves, will drive the column of resistance and move, thereby make the gasket and the column of resistance quick separation, make the equipment power off, because need to replace the fuse pipe, because the fuse pipe and temperature sensing cap kit, only need to take down the fuse pipe, can quickly replace the fuse pipe, improve the efficiency of replacement, strengthen the security of equipment.

Description

Technical Field

[0001] This utility model relates to the field of fuse technology, specifically a photovoltaic fuse. Background Technology

[0002] A fuse is an electrical device that breaks the circuit by melting its fusible element when the current exceeds a specified value. Fuses are circuit protectors based on the principle that when the current exceeds a specified value for a certain period, the heat generated by the fuse itself melts the fusible element, thus breaking the circuit. Fuses are widely used in high and low voltage power distribution systems, control systems, and electrical equipment as short-circuit and overcurrent protectors, and are one of the most commonly used protective devices.

[0003] Existing photovoltaic fuses are inconvenient to use because the fuse wire is easily broken and detached when dropped. Furthermore, replacing them requires replacing the entire fuse unit, which is also inconvenient. While existing fuses allow the damaged fuse tube to be removed from the housing by pulling a handle, this limiting structure is unstable, and the fuse tube can easily detach and fall back into the housing during replacement, making replacement difficult. Additionally, the fuse length is fixed, but the distance between the two ends of external equipment is not always consistent, requiring fuses of different lengths to handle external equipment with varying distances. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a photovoltaic fuse.

[0005] A photovoltaic fuse includes a protection mechanism. A clamping mechanism is provided on one side of the protection mechanism, and an extension mechanism is provided on one side of the clamping mechanism. The protection mechanism includes a fuse tube, a temperature sensing cap at the bottom of the fuse tube, a temperature sensing particle connected to the top of the temperature sensing cap, a base plate connected to the top of the temperature sensing particle, a stop post at the top of the base plate, a circuit-breaking spring sleeved on the stop post, a connecting plate connected to the top of the circuit-breaking spring, a contact piece slidably connected to the connecting plate, the top of the contact piece abutting against a conductive post, and an insulating block provided on the lower surface of the conductive post.

[0006] Preferably, the clamping mechanism includes a fixed frame, a fixed block is provided on the inner wall of the fixed frame, a round rod is provided on the left side of the fixed block, a movable block is sleeved on the round rod, a base is provided at the bottom of the movable block, and a connecting block is slidably connected to the bottom of the base.

[0007] Furthermore, the bottom of the connecting block is provided with a gripper, the top of the connecting block is provided with a clamping block, the top of the connecting block is provided with a pad, the top of the pad is provided with a limit spring, and the left and right sides of the fixing frame are provided with first sliders.

[0008] Preferably, the extension mechanism includes a fuse body, a fixing plate is provided on the top of the fuse body, and a handle is provided on the top of the fixing plate.

[0009] Furthermore, extension plates are slidably connected to the left and right sides of the fuse body, and a second slider is provided on the inner wall of the extension plate. The extension plate is slidably connected to the fuse body through the second slider.

[0010] Preferably, the inner side of the gripper is provided with anti-slip protrusions, and the anti-slip protrusions are arranged in a multi-row matrix structure.

[0011] Preferably, the temperature-sensitive particles are alloy materials with a melting point of 72°C to 85°C.

[0012] Preferably, the outer end of the extension plate is provided with a connection terminal, which is connected to an external power system by screws.

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

[0014] This utility model provides a photovoltaic fuse. Through a protective mechanism, when the temperature is too high during use, the temperature-sensing particle melts. Because the base plate and the fuse tube are slidably connected, and the circuit-breaking spring is connected to the connecting plate, when the temperature-sensing particle melts, the circuit-breaking spring pushes the base plate to move. Since the base plate is connected to the abutment, and the abutment is connected to the gasket, the movement of the base plate will drive the abutment to move as well, thereby quickly separating the gasket from the conductive post and cutting off the power to the device. When the fuse tube needs to be replaced, because the fuse tube is connected to the temperature-sensing cap, only the fuse tube needs to be removed for quick replacement, improving replacement efficiency and enhancing equipment safety. Meanwhile, this utility model, by setting up a clamping mechanism and an extension mechanism, allows the base to move by moving the moving block, which is slidably connected to the round rod during use. When the base moves, it drives the clamping block fixed at its top and the connecting block at its bottom to move, thereby adjusting the distance between the bases. Because the base and the connecting block are slidably connected, and a limit spring is set inside the base, the gripper can be limited, making it easy to adjust the position of the gripper and improving the flexibility of the equipment. It is also convenient to fix fuse tubes of different sizes. By setting two extension plates on the fuse body, and the extension plates are slidably connected to the fuse body through a second slider, the fuse body can be easily connected to external devices of different lengths by moving the extension plates when connecting to different external devices. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the overall structure of the photovoltaic fuse described in this utility model.

[0016] Figure 2 This is a direct view schematic diagram of the photovoltaic fuse described in this utility model;

[0017] Figure 3 This is a schematic diagram of the anatomical structure of the fusion tube described in this utility model;

[0018] Figure 4 This is a schematic diagram showing the disassembly of the main body of the integral fuse of this utility model;

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

[0020] Figure 6 This is a schematic diagram of the anatomical structure of the connecting block described in this utility model;

[0021] Figure 7 This is a schematic diagram of the fuse body described in this utility model;

[0022] Figure 8 This is a schematic diagram of the extension plate structure described in this utility model;

[0023] in:

[0024] 1-Protective mechanism, 101-Fuse tube, 102-Temperature sensor cap, 103-Temperature sensor particle, 104-Base plate, 105-Abutment, 106-Circuit break spring, 107-Connecting plate, 108-Contact piece, 109-Conductive post, 110-Insulating block, 2-Clamping mechanism, 201-Fixing frame, 202-Fixing block, 203-Round rod, 204-Moving block, 205-Base, 206-Connecting block, 207-Gripper, 208-Clamping block, 209-Pad, 210-Limiting spring, 211-First slider, 3-Extension mechanism, 301-Fuse body, 302-Fixing plate, 303-Handle, 304-Extension plate, 305-Second slider. Detailed Implementation

[0025] 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.

[0026] See Figures 1 to 8 This embodiment provides a photovoltaic fuse, which is characterized by including a protection mechanism 1, a clamping mechanism 2 on one side of the protection mechanism 1, and an extension mechanism 3 on the left side of the clamping mechanism 2.

[0027] Specifically, the protection mechanism 1 includes a fuse tube 101, a temperature sensing cap 102 fitted at the bottom of the fuse tube 101, a temperature sensing particle 103 on the top of the temperature sensing cap 102, a base plate 104 on the top of the temperature sensing particle 103, a stop post 105 on the top of the base plate 104, a circuit breaker spring 106 sleeved on the stop post 105, a connecting plate 107 on the top of the circuit breaker spring 106, a contact piece 108 slidably connected to the connecting plate 107, the contact piece 108 sleeved with the connecting plate 107, a conductive post 109 in contact with the top of the contact piece 108, and an insulating block 110 on the lower surface of the conductive post 109.

[0028] Preferably, the clamping mechanism 2 includes a fixed frame 201, a fixed block 202 on the inner wall of the fixed frame 201, a round rod 203 on the left side of the fixed block 202, a movable block 204 sleeved on the round rod 203, a base 205 at the bottom of the movable block 204, and a connecting block 206 slidably connected to the bottom of the base 205. Therefore, the clamping mechanism 2 can achieve stable positioning and clamping of the fuse tube. The sliding connection between the round rod 203 and the movable block 204 allows the movable block 204 to be adjusted along the direction of the round rod, thereby adjusting the position of the base 205 and the connecting block 206 to accommodate fuse tubes of different sizes or specifications. The sliding fit between the base 205 and the connecting block 206 further enhances the adjustment flexibility of the clamping mechanism, effectively improving the adaptability and ease of operation of the fuse during installation and replacement, and avoiding problems such as dimensional inconsistencies or insecure clamping caused by a fixed structure.

[0029] Preferably, a gripper 207 is fixedly connected to the bottom of the connecting block 206. The gripper 207 is used to clamp the outer wall of the fusion tube to prevent the fusion tube from shaking or falling off during use or replacement. A clamping block 208 is installed on the top of the connecting block 206. A pad 209 is provided on the top of the clamping block 208. A limit spring 210 is provided above the pad 209 to apply elastic force to the gripper 207 to achieve the limit reset function. First sliders 211 are provided on the left and right sides of the fixing frame 201. More preferably, the first sliders 211 are symmetrically arranged on the left and right sides of the fixing frame 201. The first sliders 211 form a sliding fit structure with the mounting base of the clamping mechanism 2, which facilitates the fine adjustment of the clamping mechanism 2 in the lateral direction and improves its ability to adapt to different types of fusion tubes.

[0030] Preferably, the extension mechanism 3 includes a fuse body 301, a fixing plate 302 is provided on the top of the fuse body 301, and a handle 303 is provided on the top of the fixing plate 302. This allows the operator to directly lift the entire device using the handle when replacing or repairing the fuse, making operation more convenient and labor-saving, avoiding the risk of slippage or accidental activation caused by holding the fuse body, and improving the operability and safety of the equipment.

[0031] Preferably, extension plates 304 are slidably connected to the left and right sides of the fuse body 301. A second slider 305 is provided on the inner wall of the extension plate 304, and the extension plate 304 is slidably connected to the fuse body 301 via the second slider 305. This allows the overall length of the fuse to be flexibly adjusted according to the distance between the devices at both ends in the actual installation environment, solving the problem that traditional fixed-length fuses cannot adapt to various equipment layouts. The extension plate 304 and the fuse body 301 are connected by a slider guide rail, ensuring both the smoothness and positioning accuracy of the adjustment process, and improving the overall structural strength and connection reliability. This significantly improves the versatility of the fuse under different photovoltaic systems or electrical interface conditions, reduces product selection complexity and inventory pressure, and has good practical value and market application prospects.

[0032] Preferably, the inner side of the gripper 207 is provided with anti-slip protrusions, which are arranged in a multi-row matrix structure. This effectively increases the friction between the gripper 207 and the fuse tube, preventing the fuse tube from loosening or slipping due to vibration or external force during installation and operation, thus improving the stability and safety of clamping and ensuring the reliable operation of the fuse.

[0033] Preferably, the temperature-sensitive particle 103 is an alloy material with a melting point of 72°C to 85°C. This allows the fuse to accurately respond to temperature changes within the set temperature range, achieving rapid and accurate over-temperature power-off protection. The selection of this temperature-sensitive material ensures both the sensitivity of the protection and avoids malfunctions caused by temperature fluctuations, thereby improving the safety and service life of the fuse.

[0034] Preferably, the outer end of the extension plate 304 is provided with a connection terminal, which is connected to an external power system via screws. Therefore, it achieves a reliable electrical connection between the fuse and external equipment, simplifies the installation process, improves the overall mechanical strength and conductive stability of the connection, facilitates maintenance and replacement, and enhances the safety and reliability of the system.

[0035] The implementation principle of a photovoltaic fuse in this embodiment is as follows: By setting a protection mechanism 1, when the temperature is too high during use, the temperature-sensing particle 103 will melt. Because the base plate 104 is slidably connected to the fuse tube 101, and the circuit-breaking spring 106 is connected to the connecting plate 107, when the temperature-sensing particle 103 melts, the circuit-breaking spring 106 will push the base plate 104 to move. Because the base plate 104 is connected to the abutment 105, and the abutment 105 is connected to the gasket 108, when the base plate 104 moves, it will drive the abutment 105 to move, thereby causing the gasket 108 to quickly separate from the conductive post 109, thus cutting off the power to the device. When it is necessary to replace the fuse tube 101, because the fuse tube 101 is sleeved with the temperature-sensing cap 102, it is only necessary to remove the fuse tube 101 to quickly replace it. During use, because the moving block 204 is slidably connected to the round rod 203... Therefore, by moving the movable block 204, the base 205 can be moved. When the base 205 moves, it will drive the clamping block 208 fixed on its top and the connecting block 206 set at its bottom to move, thereby adjusting the distance between the bases 205 and 206. Since the base 205 and the connecting block 206 are slidably connected, and the base 205 is provided with a limit spring 210, the gripper 207 can be limited, which facilitates the adjustment of the position of the gripper 207, improves the flexibility of the equipment, and facilitates the fixing of fuse tubes 101 of different sizes. By providing two extension plates 304 on the fuse body 301, and the extension plates 304 are slidably connected to the fuse body 301 through the second slider 305, when connecting to different external devices, the extension plates 305 can be moved to make the fuse body 301 easy to connect to external devices of different lengths.

[0036] 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 scope of the present utility model patent application shall still fall within the scope of the present utility model.

Claims

1. A photovoltaic fuse, characterized in that, The device includes a protection mechanism, a clamping mechanism on one side of the protection mechanism, and an extension mechanism on one side of the clamping mechanism. The protection mechanism includes a fusible tube, a temperature sensing cap at the bottom of the fusible tube, a temperature sensing particle connected to the top of the temperature sensing cap, a base plate connected to the top of the temperature sensing particle, a stop post at the top of the base plate, a circuit breaker spring sleeved on the stop post, a connecting plate connected to the top of the circuit breaker spring, a contact piece slidably connected to the connecting plate, a conductive post abutting the top of the contact piece, and an insulating block on the lower surface of the conductive post.

2. The photovoltaic fuse as described in claim 1, characterized in that: The clamping mechanism includes a fixed frame, a fixed block is provided on the inner wall of the fixed frame, a round rod is provided on the left side of the fixed block, a movable block is sleeved on the round rod, a base is provided at the bottom of the movable block, and a connecting block is slidably connected to the bottom of the base.

3. A photovoltaic fuse as described in claim 2, characterized in that: The bottom of the connecting block is provided with a gripper, the top of the connecting block is provided with a clamping block, the top of the connecting block is provided with a pad, the top of the pad is provided with a limit spring, and the left and right sides of the fixing frame are provided with first sliders.

4. A photovoltaic fuse as described in claim 1, characterized in that: The extension mechanism includes a fuse body, a fixing plate on the top of the fuse body, and a handle on the top of the fixing plate.

5. A photovoltaic fuse as described in claim 4, characterized in that: The fuse body is slidably connected to the left and right sides of the fuse body. The inner wall of the extension plate is provided with a second slider. The extension plate is slidably connected to the fuse body through the second slider.

6. A photovoltaic fuse as described in claim 3, characterized in that: The inner side of the gripper is provided with anti-slip protrusions, which are arranged in a multi-row matrix structure.

7. A photovoltaic fuse as described in claim 1, characterized in that: The temperature-sensitive particles are alloy materials with a melting point of 72°C to 85°C.

8. A photovoltaic fuse as described in claim 5, characterized in that: The outer end of the extension plate is provided with a connection terminal, which is connected to an external power system by screws.

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