Power adapter with power-off protection function

Abstract

The utility model discloses a power adapter with a power-off protection function, which comprises an adapter main body, one side of the adapter main body and an internal circuit are connected with a first connecting line, the tail end of the first connecting line is fixedly connected with a power plug, and the internal circuit of one side, far away from the first connecting line, of the adapter main body is fixedly connected with a second connecting line. An outer mounting plate is mounted on the side, close to the first connecting line, of the adapter body through screws, a first spring is fixedly connected to the inner side of the outer mounting plate, a first electrical interface is fixedly connected to the tail end of the first spring, and a slide rheostat is fixedly connected to the side, facing the adapter body, of the inner mounting plate. According to the power adapter with the power-off protection function, power can be cut off at high temperature, power supply can be recovered at low temperature, fire disasters caused by too high temperature of the power adapter can be prevented, the connecting plug can be protected, and poor contact caused by dust when the power adapter is used can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of power adapters, in particular to a power adapter with a power-off protection function. Background Technique

[0002] Since different electrical appliances can adapt to different charging voltages and currents, and at the same time, for different storage batteries, if inappropriate currents and voltages are used, it will damage the storage battery and reduce the service life of the storage battery. In order to make the plug adapt to different electrical appliances, users generally use a power adapter to adjust the voltage and current inside the electrical socket;

[0003] When the power adapter is charging, it will generate a large amount of heat. At the same time, a corresponding heat dissipation mechanism is provided inside the power adapter, which will prevent the inside of the power adapter from being damaged due to excessive temperature. However, when the internal power of the adapter dissipates heat insufficiently, it will cause the internal temperature of the power adapter to rise, and in severe cases, it will cause sparks in the internal circuit of the power adapter. Therefore, when the adapter is short-circuited, we need to cut off the power in time;

[0004] However, in actual operation, when cutting off the power of the power adapter, it is generally done manually, but the human eye cannot monitor the internal situation of the power adapter in real time. Therefore, the power adapter cannot be powered off in time. At the same time, generally a plug with a notch is provided at the other end of the power adapter. The shape of the notch is relatively deep, and it is difficult to clean when water and dust enter, resulting in poor contact when the power adapter is used.

[0005] In view of the above situation, we propose a power adapter with a power-off protection function. Content of the Utility Model

[0006] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose a power adapter with a power-off protection function.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A power adapter with a power-off protection function, including an adapter body. One side of the adapter body is fixedly connected to an internal circuit with a first connecting wire. The end of the first connecting wire is fixedly connected to a power plug. The internal circuit on the side of the adapter body away from the first connecting wire is fixedly connected to a second connecting wire. The end of the second connecting wire is fixedly connected to a connecting plug. Ventilation openings are provided on both sides of the adapter body perpendicular to the first connecting wire. An outer mounting plate is installed on the side of the adapter body close to the first connecting wire by screws. A first spring is fixedly connected to the inner side of the outer mounting plate. The tail end of the first spring is fixedly connected to a first electrical interface. Limiting blocks are fixedly connected to both sides of the first electrical interface. A sliding rheostat is fixedly connected to the side of the inner mounting plate facing the adapter body.

[0009] An inner mounting plate is installed inside the adapter body by screws. An electromagnet is fixedly connected through the inner mounting plate. One end of the electromagnet close to the first electrical interface is fixedly connected to a concentric second electrical interface. A short connecting wire is fixedly connected between the first electrical interface and the first connecting wire. Limiting frames fixedly connected to the outer surface of the inner mounting plate are provided on both sides of the second electrical interface. The inside of the limiting frame is slidably connected to the limiting blocks.

[0010] A storage groove is provided on the outer surface of the side of the adapter body away from the first connecting wire. Positioning frames are fixedly connected to the upper and lower ends of the storage groove. A second spring is fixedly connected to the inner wall of the positioning frame. One end of the second spring away from the inner wall of the positioning frame is fixedly connected to a positioning rod.

[0011] Preferably, an indicator light is fixedly connected to the outer surface of the side of the adapter body close to the second connecting wire.

[0012] Preferably, a rotating rod is fixedly connected to the outer surface of the side of the adapter body close to the second connecting wire. A handle is fixedly connected to the top of the rotating rod.

[0013] Preferably, a sliding rheostat is fixedly connected to the side of the inner mounting plate facing the adapter body. The sliding rheostat is connected to the electromagnet and is connected to the power supply inside the adapter body after being connected to the electromagnet.

[0014] Preferably, a lead screw is rotatably connected to the inner wall of the sliding rheostat. The lead screw passes through the adjusting rod of the sliding rheostat and is threadedly connected to the adjusting rod of the sliding rheostat. A driving motor is fixedly connected to the outer surface of the sliding rheostat through a bracket. The output end of the driving motor is fixedly connected to the end of the lead screw.

[0015] A temperature sensor is fixedly connected to the outer surface of the end of the sliding rheostat facing the adapter body.

[0016] A power adapter with a power-off protection function proposed by the present utility model has the beneficial effects that when protecting the circuit, after the temperature sensor senses too high a temperature, it starts the driving motor to drive the adjusting rod at the top of the sliding rheostat to move, so that the resistance value of the sliding rheostat reaches the maximum, and then the adapter main body is powered off. When the temperature drops to the safe range, the driving motor drives the sliding piece to restore its position and supplies power again, preventing the situation that the adapter main body causes a fire due to too high a temperature; at the same time, during use, the connection plug can be placed inside the storage groove for storage, and positioning rods are arranged on the outside to position the end of the connection plug, preventing the connection plug from falling during the storage process. Therefore, dust and water can be prevented from entering the inside of the connection plug, and thus the situation of poor contact when the power adapter is in use can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the overall outer surface of the present utility model;

[0018] Figure 2 is an exploded view of the internal structure of the adapter main body of the present utility model;

[0019] Figure 3 is an exploded view of the overall part of the present utility model;

[0020] Figure 4 is a schematic structural diagram of the overall part of the present utility model.

[0021] In the figure: 1. Adapter main body; 2. First connecting wire; 3. Power plug; 4. Display lamp; 5. Second connecting wire; 6. Connection plug; 7. Outer mounting plate; 8. Ventilation opening; 9. First spring; 10. First electrical interface; 11. Limiting block; 12. Short connecting wire; 13. Electromagnet; 14. Second electrical interface; 15. Inner mounting plate; 16. Limiting frame; 17. Sliding rheostat; 18. Storage groove; 19. Positioning frame; 20. Positioning rod; 21. Second spring; 22. Rotating rod; 23. Handle; 24. Driving motor; 25. Lead screw; 26. Temperature sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0024] Referring to FIGS. 1-4, a power adapter with a power-off protection function includes an adapter body 1. One side of the adapter body 1 is fixedly connected to an internal circuit with a first connecting wire 2. The end of the first connecting wire 2 is fixedly connected to a power plug 3. The internal circuit on the side of the adapter body 1 away from the first connecting wire 2 is fixedly connected to a second connecting wire 5. The end of the second connecting wire 5 is fixedly connected to a connecting plug 6. Ventilation openings 8 are provided on both sides of the adapter body 1 perpendicular to the first connecting wire 2. A display lamp 4 is fixedly connected to the outer surface of the adapter body 1 near the second connecting wire 5.

[0025] On one side of the adapter body 1 close to the first connecting wire 2, an outer mounting plate 7 is installed by screws. Inside the outer mounting plate 7, a first spring 9 is fixedly connected. The tail end of the first spring 9 is fixedly connected to a first electrical interface 10. On both sides of the first electrical interface 10, limit blocks 11 are fixedly connected. On the side of the inner mounting plate 15 facing the adapter body 1, a sliding rheostat 17 is fixedly connected. Inside the adapter body 1, an inner mounting plate 15 is installed by screws. The inner mounting plate 15 is fixedly connected through with an electromagnet 13. One end of the electromagnet 13 close to the first electrical interface 10 is fixedly connected to a second electrical interface 14 with the same center. A short connecting wire 12 is fixedly connected between the first electrical interface 10 and the first connecting wire 2. On both sides of the second electrical interface 14, a limit frame 16 fixedly connected to the outer surface of the inner mounting plate 15 is provided. The inside of the limit frame 16 is slidably connected to the limit blocks 11. On the outer surface of the side of the adapter body 1 away from the first connecting wire 2, a storage groove 18 is provided. At the upper and lower ends of the storage groove 18, positioning frames 19 are fixedly connected. The inner wall of the positioning frame 19 is fixedly connected to a second spring 21. One end of the second spring 21 away from the inner wall of the positioning frame 19 is fixedly connected to a positioning rod 20. A lead screw 25 is rotatably connected to the inner wall of the sliding rheostat 17. The lead screw 25 passes through the adjusting rod of the sliding rheostat 17 and is threadedly connected to the adjusting rod of the sliding rheostat 17. On the outer surface of the sliding rheostat 17, a driving motor 24 is fixedly connected through a bracket. The output end of the driving motor 24 is fixedly connected to the end of the lead screw 25. On the outer surface of the end of the sliding rheostat 17 facing the adapter body 1, a temperature sensor 26 is fixedly connected. On the side of the inner mounting plate 15 facing the adapter body 1, a sliding rheostat 17 is fixedly connected. The sliding rheostat 17 is connected to the electromagnet 13. After the sliding rheostat 17 is connected to the electromagnet 13, it is connected to the power supply inside the adapter body 1. The driving motor 24 drives the lead screw 25 to rotate, thereby driving the adjusting rod at the top of the sliding rheostat 17 to move, achieving the purpose of changing the resistance value of the sliding rheostat 17.

[0026] On the outer surface of the side of the adapter body 1 close to the second connecting wire 5, a rotating rod 22 is fixedly connected. At the top of the rotating rod 22, a handle 23 is fixedly connected. The rotating rod 22 can store the second connecting wire 5.

[0027] In summary: During the application of the present utility model, when in use, when the temporal part of the adapter body 1 is overheated, the temperature sensor 26 at the top of the sliding rheostat 17 senses it and starts the drive motor 24 to drive the adjusting rod at the top of the sliding rheostat 17 to move, so that the resistance value of the sliding rheostat 17 reaches the maximum, and further the magnetic force of the electromagnet 13 is greatly reduced, and it cannot adsorb the first electrical interface 10, causing the first electrical interface 10 to separate from the second electrical interface 14, and further causing the adapter body 1 to power off. When the temperature drops, it will automatically return to the minimum resistance value, making the suction force of the electromagnet 13 the largest to adsorb the first electrical interface 10, and the adapter body 1 resumes power; during storage, the user can wind the second connecting wire 5 around the outer surface of the rotating rod 22, then pinch the handle 23 and rotate to store the second connecting wire 5. Then the user puts the connecting plug 6 into the storage groove 18, and at the same time, the end of the connecting plug 6 is clamped between the positioning rods 20, so that the connecting plug 6 can be stored and protected.

[0028] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its utility model concept, making equivalent replacements or changes, should be covered by the protection scope of the present utility model.

Claims

1. A power adapter with a power-off protection function, comprising an adapter body (1). One side of the adapter body (1) is fixedly connected to an internal circuit with a first connecting wire (2). The end of the first connecting wire (2) is fixedly connected to a power plug (3). Inside the adapter body (1) on the side away from the first connecting wire (2), the internal circuit is fixedly connected to a second connecting wire (5). The end of the second connecting wire (5) is fixedly connected to a connection plug (6). Ventilation openings (8) are provided on two sides of the adapter body (1) perpendicular to the first connecting wire (2), and it is characterized in that, On one side of the adapter body (1) close to the first connecting wire (2), an outer mounting plate (7) is installed by screws. Inside the outer mounting plate (7), a first spring (9) is fixedly connected. The tail end of the first spring (9) is fixedly connected to a first electrical interface (10). On both sides of the first electrical interface (10), limit blocks (11) are fixedly connected. On one side of the inner mounting plate (15) facing the adapter body (1), a sliding rheostat (17) is fixedly connected. Inside the adapter body (1), an inner mounting plate (15) is installed by screws. The inner mounting plate (15) is fixedly connected through an electromagnet (13). One end of the electromagnet (13) close to the first electrical interface (10) is fixedly connected to a second electrical interface (14) with the same center. A short connecting wire (12) is fixedly connected between the first electrical interface (10) and the first connecting wire (2). On both sides of the second electrical interface (14), limit frames (16) fixedly connected to the outer surface of the inner mounting plate (15) are provided. The inside of the limit frame (16) is slidably connected to the limit blocks (11). On the outer surface of one side of the adapter body (1) away from the first connecting wire (2), a storage groove (18) is provided. At the upper and lower ends of the storage groove (18), positioning frames (19) are fixedly connected. Inside the inner wall of the positioning frame (19), a second spring (21) is fixedly connected. One end of the second spring (21) away from the inner wall of the positioning frame (19) is fixedly connected to a positioning rod (20).

2. The power adapter with a power-off protection function according to claim 1, characterized in that, On the outer surface of one side of the adapter body (1) close to the second connecting wire (5), an indicator light (4) is fixedly connected.

3. The power adapter with a power-off protection function according to claim 1, characterized in that, On the outer surface of one side of the adapter body (1) close to the second connecting wire (5), a rotating rod (22) is fixedly connected. At the top of the rotating rod (22), a handle (23) is fixedly connected.

4. A power adapter with a power-off protection function according to claim 1, characterized in that, On one side of the inner mounting plate (15) facing the adapter body (1), a sliding rheostat (17) is fixedly connected. The sliding rheostat (17) is connected to the electromagnet (13). After being connected to the electromagnet (13), the sliding rheostat (17) is connected to the power supply inside the adapter body (1).

5. A power adapter with a power-off protection function according to claim 1, characterized in that, Inside the sliding rheostat (17), a lead screw (25) is rotatably connected. The lead screw (25) passes through the adjusting rod of the sliding rheostat (17) and is threadedly connected to the adjusting rod of the sliding rheostat (17). On the outer surface of the sliding rheostat (17), a driving motor (24) is fixedly connected through a bracket. The output end of the driving motor (24) is fixedly connected to the end of the lead screw (25).

6. The power adapter with a power-off protection function according to claim 1, characterized in that, On the outer surface of one end of the sliding rheostat (17) facing the adapter body (1), a temperature sensor (26) is fixedly connected.

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