Charger with safety protection structure

Abstract

The utility model relates to charger safety protection technical field, and disclose a kind of charger with safety protection structure, including protective bottom shell, sealing bottom shell, protective top shell, three are fixedly connected by connecting lug, mounting hole and fixed screw, form closed protective space, protective top shell side surface is equipped with heat dissipation assembly, containing heat dissipation shell, ventilation slot, mounting groove, fan fixing plate and heat dissipation fan, internal heat can be exported efficiently, protective top shell top central part is equipped with auxiliary structure, containing top cover, telescopic link, top block and temperature detector, bottom connection charging head structure, the charger is strengthened overall strength by the connecting structure of symmetrical distribution, stepped sealing bottom shell improves impact resistance, heat dissipation assembly forms directional airflow passage, cooperate temperature detector dynamic adjustment heat dissipation, when temperature is abnormal, telescopic link drives top block to make charging head body separate from equipment, cut off circuit.

Description

Technical Field

[0001] This utility model relates to the field of charger safety protection technology, specifically a charger with a safety protection structure. Background Technology

[0002] A charger with a safety protection structure is a charging device that integrates a protective shell, heat dissipation components, monitoring and adjustment mechanisms, and a stable connection structure. While achieving the function of power transmission, it can resist physical damage, control abnormal temperature, and reduce the risk of circuit failure. Its core design goal is to improve the safety and stability of the charging process. In daily use, chargers need to withstand the mechanical stress caused by frequent plugging and unplugging operations, and are exposed to different temperature and humidity environments for a long time. Moreover, the internal circuits are prone to overheating, short circuits, and other problems under voltage fluctuations and continuous high load conditions, which may lead to safety hazards such as equipment damage, electric shock, or even fire. Therefore, a charger with a safety protection structure can provide multiple protections for users and electrical equipment, meeting the basic requirements for safety during the charging process.

[0003] Traditional chargers have significant limitations in their protective design. Their casings are often simple, spliced ​​structures with insufficient connection strength, making them prone to cracking upon impact or drop. This exposes internal components and leaves them unprotected. Their heat dissipation methods are limited, relying solely on natural cooling. Under prolonged high-load operation, heat can easily accumulate, accelerating the aging of internal components and potentially leading to overheating and spontaneous combustion. They also lack precise temperature monitoring and dynamic response mechanisms. When internal temperatures are abnormal or minor circuit malfunctions occur, they cannot take timely protective measures, which may result in charging interruptions, equipment damage, and in severe cases, even threaten the personal safety and property of users. They are ill-suited to the complex scenarios in actual use. Therefore, we propose a charger with a safety protection structure. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a charger with a safety protection structure, thus solving the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a charger with a safety protection structure, comprising:

[0006] The protective bottom shell, the sealed bottom shell, and the protective top shell are provided. The top of the protective bottom shell is fixedly connected to the protective top shell, and the bottom of the protective bottom shell is fixedly connected to the sealed bottom shell. The sealed bottom shell is stepped. The sides of the protective bottom shell and the protective top shell are provided with connecting structures, and the connecting structures are axially symmetrically distributed on the sides of the protective bottom shell and the protective top shell.

[0007] A heat dissipation assembly is disposed on the side of the protective top shell. The heat dissipation assembly includes a fan structure and a fixing structure. The fixing structure is disposed on the side of the protective top shell and is axially symmetrically distributed on the side of the protective top shell. The fan structure is disposed inside the fixing structure.

[0008] An auxiliary structure is disposed on the top of the protective bottom shell, the auxiliary structure is located at the top center of the protective top shell, and the bottom of the auxiliary structure is connected to the charging head structure.

[0009] Preferably, the connection structure includes connecting ears, mounting holes, and fixing screws. A set of symmetrical connecting ears is fixedly installed on the sides of both the protective bottom shell and the protective top shell. A through mounting hole is opened at the top of the connecting ears. The fixing screw is movably installed in the fixing screw, and the protective bottom shell and the protective top shell are fixedly connected by the fixing screw.

[0010] Preferably, the fixing structure includes a heat dissipation shell and ventilation slots. The heat dissipation shell is fixedly installed on the outside of the protective top shell, and the outside of the protective top shell is axially symmetrically distributed. Multiple sets of linearly distributed ventilation slots are opened on the outward side of the heat dissipation shell.

[0011] Preferably, the fixing structure further includes a mounting groove and a fan fixing plate. A set of through mounting grooves is provided on the side of the protective top shell corresponding to the interior of the heat dissipation shell. The fan fixing plate is fixedly installed in the mounting groove, and the fan fixing plate is symmetrically distributed on the side of the protective top shell.

[0012] Preferably, the fan structure includes a fan mounting slot and a cooling fan, and the fan mounting slot is provided in the center of the fan fixing plate, and the cooling fan is fixedly installed in the fan mounting slot.

[0013] Preferably, the auxiliary structure includes a top cover, telescopic rods, and a top block. The top cover is fixedly installed on the top of the protective top shell. A temperature detector is fixedly installed in the center of the lower surface of the protective top shell. A set of parallel telescopic rods are fixedly installed on both sides of the temperature detector. The bottom of the telescopic rods is fixedly connected to the top block.

[0014] Preferably, the charging head structure includes a charging head slot and a temperature detector. A set of through charging head slots is provided at the bottom of the sealed bottom shell, and the charging head slots are axially symmetrically distributed at the bottom of the sealed bottom shell. The charging head body is fixedly installed in the charging head slot. The top of the charging head body is fixedly connected to the bottom of the top block, and the bottom of the charging head body passes through the charging head slot.

[0015] Compared with the prior art, this utility model provides a charger with a safety protection structure, which has the following beneficial effects:

[0016] 1. This charger with a safety protection structure significantly improves overall structural strength through a combination of a protective bottom shell, a protective top shell, and a sealed bottom shell, along with a connection structure consisting of connecting ears, mounting holes, and fixing screws. The symmetrically distributed connecting ears and fixing screws ensure a tight fixation of the shell. The stepped design of the sealed bottom shell further enhances the bottom's impact resistance, effectively resisting mechanical damage during daily use and preventing the internal circuitry from losing protection due to shell breakage. This structurally reduces the safety risks caused by physical damage. The symmetrically distributed cooling fans on the sides of the protective top shell, in conjunction with the fixing structure (heat dissipation shell, ventilation slots, etc.), A directional airflow channel is formed, which quickly removes internal heat through forced convection. The linear distribution design of the ventilation slots ensures smooth airflow and avoids heat dissipation dead zones. At the same time, the temperature sensor monitors the internal temperature in real time and can be linked with the cooling fan to dynamically adjust the heat dissipation intensity. The temperature sensor monitors the temperature of the core area inside the charger in real time. When an abnormal temperature is detected, the top block can be driven by the telescopic rod to apply pressure to the charging head body, realizing the physical separation of the charging head from the device and actively cutting off the charging circuit. The axisymmetric distribution and fixed design of the charging head slot ensures the stability of contact during the charging process and reduces local overheating caused by poor contact. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the mounting holes of this utility model;

[0019] Figure 3 This is a schematic diagram of the temperature detector of this utility model;

[0020] Figure 4 This is a schematic diagram of the cooling fan of this utility model.

[0021] In the diagram: 1. Protective bottom shell; 2. Sealed bottom shell; 3. Protective top shell; 4. Connecting ear; 5. Mounting hole; 6. Fixing screw; 7. Heat dissipation shell; 8. Ventilation slot; 9. Mounting slot; 10. Fan mounting plate; 11. Fan mounting slot; 12. Cooling fan; 13. Top cover; 14. Telescopic rod; 15. Top block; 16. Charging head slot; 17. Charging head body; 18. Temperature detector. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 A charger with a safety protection structure includes:

[0024] The protective bottom shell 1, the sealed bottom shell 2, and the protective top shell 3 are provided. The top of the protective bottom shell 1 is fixedly connected to the protective top shell 3, and the bottom of the protective bottom shell 1 is fixedly connected to the sealed bottom shell 2. The sealed bottom shell 2 is stepped. The protective bottom shell 1 and the protective top shell 3 are provided with connecting structures on their sides, and the connecting structures are axially symmetrically distributed on the sides of the protective bottom shell 1 and the protective top shell 3.

[0025] The heat dissipation assembly is located on the side of the protective top shell 3. The heat dissipation assembly includes a fan structure and a fixing structure. The fixing structure is located on the side of the protective top shell 3 and is symmetrically distributed on the side of the protective top shell 3. The fan structure is located inside the fixing structure.

[0026] An auxiliary structure is located at the top of the protective bottom shell 1, with the auxiliary structure at the center of the top of the protective top shell 3, and the bottom of the auxiliary structure is connected to the charging head structure.

[0027] Furthermore, the connection structure includes connecting ears 4, mounting holes 5, and fixing screws 6. A set of symmetrical connecting ears 4 are fixedly installed on the sides of both the protective bottom shell 1 and the protective top shell 3. The top of the connecting ears 4 has a through mounting hole 5. The fixing screws 6 are movably installed inside the fixing screws 6, and the protective bottom shell 1 and the protective top shell 3 are fixedly connected by the fixing screws 6. The symmetrical distribution design of the connecting ears 4 ensures that the force is even when the protective bottom shell 1 and the protective top shell 3 are connected, avoiding excessive local stress that could cause shell deformation. The inner wall of the mounting hole 5 is chamfered to reduce wear when the fixing screws 6 are screwed in and extend their service life. The fixing screws 6 adopt an anti-loosening thread design, which can maintain the stability of the connection even under long-term insertion and removal vibration or thermal expansion and contraction caused by temperature changes, preventing the shell from loosening and creating gaps that could allow dust and moisture to enter.

[0028] Furthermore, the fixing structure includes a heat dissipation shell 7 and ventilation slots 8. The heat dissipation shell 7 is fixedly installed on the outside of the protective top shell 3, and the outside of the protective top shell 3 is symmetrically distributed. Multiple sets of linearly distributed ventilation slots 8 are opened on the outward side of the heat dissipation shell 7. The inside of the heat dissipation shell 7 is tightly fitted to the outer wall of the protective top shell 3, and some heat can be dissipated through heat conduction. The linear distribution direction of the ventilation slots 8 is consistent with the airflow direction of the cooling fan 12, and the slot openings are designed to be inclined upward, which can prevent external liquid from dripping vertically into the interior without affecting air circulation. The height of the heat dissipation shell 7 is slightly higher than that of the cooling fan 12, forming a physical shield for the fan and preventing foreign objects from directly touching the fan blades and causing damage.

[0029] Furthermore, the fixing structure also includes mounting slots 9 and fan mounting plates 10. A set of through mounting slots 9 is opened on the side of the protective top shell 3 corresponding to the interior of the heat sink shell 7. The fan mounting plates 10 are fixedly installed in the mounting slots 9. The fan mounting plates 10 are symmetrically distributed on the side of the protective top shell 3. The edge of the mounting slot 9 is provided with a rubber sealing ring, which fits tightly with the edge of the fan mounting plate 10 to prevent internal airflow from leaking from the gaps and ensure that all the airflow generated by the cooling fan 12 flows through the core heat-generating area. The fan mounting plate 10 adopts a hollow frame structure, which reduces the obstruction of airflow while fixing the cooling fan 12. Its symmetrical distribution position corresponds to the position of the main heat-generating components such as the internal transformer and MOSFET, ensuring that the cold air can be accurately blown to the heat source and improving the heat dissipation efficiency.

[0030] Furthermore, the fan structure includes a fan mounting slot 11 and a cooling fan 12. The fan mounting slot 11 is provided in the center of the fan mounting plate 10. The cooling fan 12 is fixedly installed in the fan mounting slot 11. The size of the fan mounting slot 11 matches the outer diameter of the cooling fan 12 to avoid resonance noise when the fan is running. The cooling fan 12 uses a silent bearing to solve the problem of excessive noise in traditional cooling fans. The fan blades are designed with an inclined arc shape, which can generate a larger air volume at the same speed, enhancing the heat dissipation effect while reducing energy consumption.

[0031] Furthermore, the auxiliary structure includes a top cover 13, a telescopic rod 14, and a top block 15. The top cover 13 is fixedly installed on the top of the protective top shell 3. A temperature detector 18 is fixedly installed in the center of the lower surface of the protective top shell 3. A set of parallel telescopic rods 14 are fixedly installed on both sides of the temperature detector 18. The bottom of the telescopic rods 14 is fixedly connected to the top block 15. The top cover 13 is made of flame-retardant PC material and has an anti-static coating sprayed on the surface to prevent dust adsorption from affecting heat dissipation. At the same time, it can slow down the burning speed when accidentally exposed to a fire source. The telescopic rod 14 has a spring reset mechanism inside to ensure that it can automatically reset to the retracted state when the power is cut off or a malfunction occurs, so as to prevent the charging head body 17 from being in the pop-out state for a long time. The top block 15 is made of insulating silicone material and has a buffer pad at the connection part with the charging head body 17 to reduce the mechanical impact on the charging head when the telescopic rod 14 moves it, thus extending its service life.

[0032] Furthermore, the charging head structure includes a charging head slot 16 and a temperature detector 18. A set of through charging head slots 16 are provided at the bottom of the sealed bottom shell 2, and the charging head slots 16 are symmetrically distributed at the bottom of the sealed bottom shell 2. The charging head body 17 is fixedly installed in the charging head slot 16. The top of the charging head body 17 is fixedly connected to the bottom of the top block 15, and the bottom of the charging head body 17 passes through the charging head slot 16. The inner wall of the charging head slot 16 is provided with an elastic insulating sleeve, which fits tightly against the outer wall of the charging head body 17, which can both fix the position of the charging head and prevent the leakage of electric sparks generated during insertion and removal.

[0033] Structural Description:

[0034] Protective bottom shell 1: This is the protective structure at the bottom of the charger. The top is fixedly connected to the protective top shell 3, and the bottom is connected to the sealed bottom shell 2. There are symmetrical connecting ears 4 on the side. It is fixed to the protective top shell 3 by fixing screws 6 to form a protective space.

[0035] Sealed bottom shell 2: It is stepped and connects to the bottom of the protective bottom shell 1 to enhance the bottom's impact resistance. It forms a closed space with the protective bottom shell 1 and the protective top shell 3 to protect the internal components.

[0036] Protective top shell 3: The top is connected to the protective bottom shell 1, the sides have symmetrical connection structures and heat dissipation components, and the top center has an auxiliary structure, which forms a closed protective space with other shells to support heat dissipation and auxiliary structures;

[0037] Connecting ear 4: Symmetrically installed on the sides of the protective bottom shell 1 and the protective top shell 3, with mounting holes 5 on the top, and fixed connection between the two by fixing screws 6, to enhance the overall structural strength;

[0038] Mounting hole 5: It is opened at the top of the connecting ear 4, passes through the connecting ear, and allows the fixing screw 6 to be installed in a movable manner. It is the connection point for connecting the protective bottom shell 1 and the protective top shell 3.

[0039] Fixing screw 6: It is movably installed in the mounting hole 5 to fix the protective bottom shell 1 and the protective top shell 3 through the connecting ear 4, ensuring that the shell connection is tight and stable;

[0040] Heat dissipation shell 7: It is fixed to the outside of the protective top shell 3 and symmetrically distributed. It has linear ventilation slots 8 on the side and a fan structure installed inside to assist heat dissipation and protect the fan.

[0041] Ventilation slots 8: Located on the outside of the heat dissipation shell 7, multiple sets are linearly distributed, working with the fan to form airflow channels, ensuring air circulation and helping to dissipate heat;

[0042] Mounting slot 9: It is located on the side of the protective top shell 3 and inside the heat dissipation shell 7, penetrating the shell, and is used to fix and install the fan mounting plate 10, providing installation space for the fan structure;

[0043] Fan mounting plate 10: Fixed in the mounting slot 9, symmetrically distributed, with a fan mounting slot 11 in the center, used to fix the cooling fan 12 and reduce obstruction of airflow;

[0044] Fan mounting slot 11: It is located in the center of the fan mounting plate 10, passes through the mounting plate, and is used to fix and install the cooling fan 12 to ensure stable installation of the fan;

[0045] Cooling fan 12: Installed in the fan mounting slot 11, it works with the heat sink casing, ventilation slots, etc. to form a directional airflow, forcibly dissipating internal heat and regulating the temperature;

[0046] Top cover 13: Fixed to the top of the protective top shell 3, covering the top to prevent foreign objects from falling in or liquid from seeping in, and protecting the internal auxiliary structure and circuits;

[0047] Telescopic rod 14: Installed on the lower surface of the protective top shell 3, on both sides of the temperature detector 18, distributed in parallel, and connected to the top block 15 at the bottom, which can extend and retract to move the top block;

[0048] Top block 15: connects the bottom of telescopic rod 14 and the top of charging head body 17. It moves with the telescopic rod and can detach the charging head body from the equipment to cut off the circuit.

[0049] Charging head slot 16: It is opened at the bottom of the sealed bottom shell 2 and is symmetrically distributed. It allows the charging head body 17 to pass through and be fixed, ensuring that the charging head is stably connected to the device.

[0050] The charging head body 17 has a top block 15 connected to the top and a charging head slot 16 through the bottom for connecting to the device to transmit power. It can be detached from the device by the top block.

[0051] Temperature Detector 18: The temperature detector 18, model WZP-130, is fixed in the center of the lower surface of the protective top shell 3 to monitor the internal temperature. It can be linked with the cooling fan to adjust the heat dissipation and trigger the telescopic rod to move.

[0052] Working Principle: When the charger is connected to a power source and the device is connected, the protective bottom shell 1, the protective top shell 3, and the sealed bottom shell 2 form a closed protective space. The connecting ear 4 secures the protective bottom shell 1 and the protective top shell 3 tightly through the mounting hole 5 and the fixing screw 6, ensuring that the overall structure will not loosen due to insertion / removal vibration or slight collision during charging, providing stable physical protection for the internal components. At this time, the charging head body 17 connects to the device through the charging head slot 16 and begins to transmit electrical energy. The axially symmetrical distribution design of the charging head slot 16 ensures the stability of the contact between the charging head body 17 and the device, reducing the risk of electrical shock. Due to poor contact leading to excessive local resistance and abnormal heat generation, during charging, the temperature detector 18 monitors the temperature of the central area on the lower surface of the protective top shell 3 in real time. This area is close to the core heat-generating components inside the charger and can accurately reflect the overall temperature status of the device. When the temperature is within the normal range, the cooling fan 12 maintains low-speed operation, forming airflow circulation in conjunction with the ventilation slots 8 on the heat dissipation shell 7: external cold air enters through the ventilation slots 8, is guided by the fan mounting plate 10 in the mounting slot 9, flows through the internal heat-generating components, carries away heat, and is then discharged from the fan mounting slot 11 by the cooling fan 12. This forced convection method avoids the problem of heat accumulation when traditional chargers rely solely on natural heat dissipation, ensuring that the internal components always operate within a safe temperature range. If the internal temperature rises abnormally due to voltage fluctuations, device short circuits, or prolonged high loads, the temperature detector 18 will immediately trigger the protection mechanism. On one hand, it controls the cooling fan 12 to switch to high-speed operation mode to enhance heat dissipation efficiency; on the other hand, a signal is transmitted to the telescopic rod 14, causing it to shorten rapidly and move the top block 15 upward. Since the bottom of the top block 15 is fixedly connected to the top of the charging head body 17, the top block 15... Moving upwards applies an upward pulling force to the charging head body 17, forcing it to detach from the device interface. This physically cuts off the charging circuit, completely preventing further heat generation. Simultaneously, the top cover 13 provides protection to the top of the protective shell 3, preventing foreign objects from falling in or liquids from seeping in and affecting the internal circuitry, further enhancing safety in abnormal situations. When the temperature drops to a safe threshold, the temperature detector 18 sends a signal to extend the telescopic rod 14, and the top block 15 drives the charging head body 17 to reset, reconnecting to the device and resuming charging. The cooling fan 12 also adjusts to its normal speed.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A charger with a safety protection structure, characterized in that, include: The protective bottom shell (1), the sealed bottom shell (2), and the protective top shell (3) are provided. The top of the protective bottom shell (1) is fixedly connected to the protective top shell (3), and the bottom of the protective bottom shell (1) is fixedly connected to the sealed bottom shell (2). The sealed bottom shell (2) is stepped. The protective bottom shell (1) and the protective top shell (3) are provided with connecting structures on their sides, and the connecting structures are axially symmetrically distributed on the sides of the protective bottom shell (1) and the protective top shell (3). The heat dissipation assembly is provided on the side of the protective top shell (3). The heat dissipation assembly includes a fan structure and a fixing structure. The fixing structure is provided on the side of the protective top shell (3) and is symmetrically distributed on the side of the protective top shell (3). The fan structure is provided inside the fixing structure. An auxiliary structure is disposed on the top of the protective bottom shell (1), the auxiliary structure is located at the top center of the protective top shell (3), and the bottom of the auxiliary structure is connected to the charging head structure.

2. A charger with a safety protection structure according to claim 1, characterized in that, The connection structure includes connecting ears (4), mounting holes (5) and fixing screws (6). A set of symmetrical connecting ears (4) are fixedly installed on the sides of the protective bottom shell (1) and the protective top shell (3). A through mounting hole (5) is opened on the top of the connecting ears (4). The fixing screw (6) is movably installed in the fixing screw (6), and the protective bottom shell (1) and the protective top shell (3) are fixedly connected by the fixing screw (6).

3. A charger with a safety protection structure according to claim 1, characterized in that, The fixed structure includes a heat dissipation shell (7) and ventilation slots (8). The heat dissipation shell (7) is fixedly installed on the outside of the protective top shell (3), and the outside of the protective top shell (3) is symmetrically distributed. Multiple sets of linearly distributed ventilation slots (8) are opened on the outward side of the heat dissipation shell (7).

4. A charger with a safety protection structure according to claim 3, characterized in that, The fixing structure also includes a mounting groove (9) and a fan fixing plate (10). A set of through mounting grooves (9) are provided on the side of the protective top shell (3) corresponding to the interior of the heat dissipation shell (7). The fan fixing plate (10) is fixedly installed in the mounting groove (9). The fan fixing plate (10) is symmetrically distributed on the side of the protective top shell (3).

5. A charger with a safety protection structure according to claim 4, characterized in that, The fan structure includes a fan mounting slot (11) and a cooling fan (12). The fan mounting slot (11) is provided in the center of the fan fixing plate (10), and the cooling fan (12) is fixedly installed in the fan mounting slot (11).

6. A charger with a safety protection structure according to claim 1, characterized in that, The auxiliary structure includes a top cover (13), a telescopic rod (14), and a top block (15). The top cover (13) is fixedly installed on the top of the protective top shell (3). A temperature detector (18) is fixedly installed in the center of the lower surface of the protective top shell (3). A set of parallel telescopic rods (14) are fixedly installed on both sides of the temperature detector (18). The bottom of the telescopic rods (14) is fixedly connected to the top block (15).

7. A charger with a safety protection structure according to claim 6, characterized in that, The charging head structure includes a charging head slot (16) and a temperature detector (18). A set of through charging head slots (16) is provided at the bottom of the sealed bottom shell (2), and the charging head slots (16) are symmetrically distributed at the bottom of the sealed bottom shell (2). A charging head body (17) is fixedly installed in the charging head slot (16). The top of the charging head body (17) is fixedly connected to the bottom of the top block (15), and the bottom of the charging head body (17) passes through the charging head slot (16).

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