A power surge protector box
By designing a power surge protection box, which utilizes a telescopic metal rod and a varistor to protect the power supply, the problems of complex structure and inconvenient disassembly and assembly in existing devices are solved, enabling rapid power cut-off and improving the safety and service life of the power supply.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANTAI JINGYUAN MECHANICAL & ELECTRICAL EQUIPMENT CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-05-26
AI Technical Summary
Existing power surge protection devices have complex structures, are inconvenient to disassemble and maintain, and cannot quickly cut off the power supply during lightning strikes, leading to power supply damage.
A power surge protector box was designed, comprising a box body, cavity, terminals, varistor, electromagnet, and telescopic metal rod. The telescopic metal rod first absorbs lightning strikes, the varistor becomes a large resistor to cut off the circuit, and the electromagnet loses its magnetism to push the button to turn off the power.
With its simple structure, it protects the power supply from lightning strikes, is easy to disassemble and maintain, and can quickly cut off the power supply, thus improving its service life and safety.
Smart Images

Figure CN224289304U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of lightning protection technology, specifically relating to a power supply lightning protection box. Background Technology
[0002] A power source is a device that converts other forms of energy into electrical energy. Power sources operate on the principle of "magnetism generating electricity," utilizing renewable energy sources such as hydropower, wind power, tidal power, water pressure differences in dams, and solar energy, as well as generating electricity from burning coal and oil residue. Common power sources include dry cell batteries (direct current) and household 110V–220V AC power supplies. A power supply is a device that provides power to electronic devices; it supplies the electrical energy needed by all components in a computer. The power output, and the stability of the current and voltage, directly affect the computer's performance and lifespan.
[0003] During lightning strikes, the instantaneous high voltage generated can easily cause damage to the power supply due to excessive voltage. Existing power surge protection devices are complex in structure and inconvenient to disassemble and maintain. In lightning strikes, when the voltage is too high, they cannot quickly and timely cut off the power supply, causing damage to the power supply. Utility Model Content
[0004] In view of the above-mentioned shortcomings in the prior art, the present invention provides a power surge protection box to solve the problems in the background art.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] A surge protector box, characterized in that: it includes a box body 1, the top of which is provided with a cavity 2, the cavity 2 is provided with a first terminal 3 and a second terminal 4, the second terminal 4 is connected to a varistor 7 via a wire 9, the varistor 7 is connected to an electromagnet 501 and a telescopic metal rod 8 inside a switching device 5, a stop button 6 is provided on one side of the switching device 5, and inside the switching device 5, from left to right, are an electromagnet 501, a magnetic block 502, a long block 503 and a spring 504, the magnetic block 502 is fixedly connected to the long block 503, the spring 504 is mounted on the long block 503, the electromagnet 501 is located at the other end of the magnetic block 502, the stop button 6 is directly opposite the long block 503, and the electromagnet 501 is also connected to the first terminal 3 via a wire 9.
[0007] Preferably, the housing 1 is equipped with a power supply device, and the first terminal 3 and the second terminal 4 are respectively connected to the positive and negative terminals inside the housing 1.
[0008] Preferably, the telescopic metal rod 8 also includes a telescopic rod 801 and a metal ball 802, the metal ball 802 is installed on the top of the telescopic rod 801, and the telescopic metal rod 8 is fixedly installed on one side of the box body.
[0009] Preferably, the top of the cavity 2 is provided with an openable slot cover 10.
[0010] Preferably, the electromagnet 503 and the magnetic block 502 are spaced 5 to 6 centimeters apart.
[0011] Preferably, the switching device 5 has a cavity inside, with one end of the spring fixed to the long block 503 and the other end fixed to the switching device 5.
[0012] Preferably, the stop button 6 is a push-button switch.
[0013] Compared with the prior art, this utility model has the following advantages:
[0014] When the power supply is turned on, the telescopic metal rod inside the cavity discharges, causing lightning to strike the metal rod first rather than the power supply itself, thus protecting the power supply from damage. After the lightning strikes the metal rod, the current flows from the metal rod through the varistor. The extremely high lightning voltage causes the varistor to generate extremely high resistance, preventing it from damaging the power supply. Furthermore, the extremely high resistance will break the circuit, causing the long block to lose its electromagnet function. Pressing the stop button will then shut off the power supply. In addition, this new structure is simple, highly protective, and the cavity and slot cover facilitate disassembly and maintenance. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a partial top view of the structure of this utility model;
[0017] The reference numerals in the accompanying drawings include:
[0018] 1. Box body, 2. Cavity, 3. First terminal, 4. Second terminal, 5. Switching device, 501. Electromagnet, 502. Magnetic block, 503. Long block, 504. Spring, 6. Stop button, 7. Varistor, 8. Telescopic metal rod, 801. Telescopic rod, 802. Metal ball, 9. Wire, 10. Slot cover. Detailed Implementation
[0019] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0020] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0021] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0022] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] Example 1:
[0024] like Figure 1-2 As shown, this utility model. Specifically,
[0025] A surge protector box, characterized in that: it includes a box body 1, the top of which is provided with a cavity 2, the cavity 2 is provided with a first terminal 3 and a second terminal 4, the second terminal 4 is connected to a varistor 7 via a wire 9, the varistor 7 is connected to an electromagnet 501 and a telescopic metal rod 8 inside a switching device 5, a stop button 6 is provided on one side of the switching device 5, and inside the switching device 5, from left to right, are an electromagnet 501, a magnetic block 502, a long block 503 and a spring 504, the magnetic block 502 is fixedly connected to the long block 503, the spring 504 is mounted on the long block 503, the electromagnet 501 is located at the other end of the magnetic block 502, the stop button 6 is directly opposite the long block 503, and the electromagnet 501 is also connected to the first terminal 3 via a wire 9.
[0026] Preferably, the housing 1 is equipped with a power supply device, and the first terminal 3 and the second terminal 4 are respectively connected to the positive and negative terminals inside the housing 1.
[0027] Preferably, the telescopic metal rod 8 also includes a telescopic rod 801 and a metal ball 802, the metal ball 802 is installed on the top of the telescopic rod 801, and the telescopic metal rod 8 is fixedly installed on one side of the box body.
[0028] Preferably, the top of the cavity 2 is provided with an openable slot cover 10.
[0029] Preferably, the electromagnet 503 and the magnetic block 502 are spaced 5 to 6 centimeters apart.
[0030] Preferably, the switching device 5 has a cavity inside, with one end of the spring fixed to the long block 503 and the other end fixed to the switching device 5.
[0031] Preferably, the stop button 6 is a push-button switch, which can stop the power supply when pressed, and does not affect the operation of the power supply after resetting.
[0032] Operating principle: When the power supply is turned on, the circuit inside cavity 2 is connected, which will cause the telescopic metal rod 8 to discharge, so that lightning will strike the telescopic metal rod 8 first instead of the power supply body. After the lightning strikes the telescopic metal rod 8, the current will flow from the telescopic metal rod 8 through the varistor 7. The lightning voltage is extremely large, which will cause the varistor 7 to become extremely resistant, preventing it from flowing into the power supply. The extremely large resistance will also cut off the circuit, causing the electromagnet 501 of the switching device 5 to be de-energized and lose its magnetism. Then the spring 504 resets and pushes the long block 503 to press the stop button 6, so that the power supply is turned off. When restarting the power supply, the slot cover 10 needs to be opened to reset the stop button 6.
[0033] The above are merely embodiments of this utility model. The circuits, electronic components, and modules involved are all prior art, fully achievable by those skilled in the art, and require no further explanation. The content protected by this application does not involve improvements to the software or methods. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field to which this utility model pertains prior to the application date or priority date, are able to access all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in conjunction with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.
Claims
1. A power surge protector box, characterized in that: The device includes a housing (1), the top of which has a cavity (2). The cavity (2) has a first terminal (3) and a second terminal (4). The second terminal (4) is connected to a varistor (7) via a wire (9). The varistor (7) is connected to an electromagnet (501) and a telescopic metal rod (8) inside a switching device (5). A stop button (6) is provided on one side of the switching device (5). The interior, from left to right, consists of an electromagnet (501), a magnetic block (502), a long block (503), and a spring (504). The magnetic block (502) is fixedly connected to the long block (503), and the spring (504) is mounted on the long block (503). The electromagnet (501) is located at the other end of the magnetic block (502). The stop button (6) is directly opposite the long block (503). The electromagnet (501) is also connected to the first terminal (3) via a wire (9).
2. A power surge protector box as described in claim 1, characterized in that: The box (1) is equipped with a power supply device, and the first terminal (3) and the second terminal (4) are respectively connected to the positive and negative terminals inside the box (1).
3. A power surge protector box as described in claim 1, characterized in that: The telescopic metal rod (8) also includes a telescopic rod (801) and a metal ball (802). The metal ball (802) is installed on the top of the telescopic rod (801), and the telescopic metal rod (8) is fixedly installed on one side of the box body.
4. A power surge protector box as described in claim 1, characterized in that: The top of the cavity (2) is provided with an openable slot cover (10).
5. A power surge protector box as described in claim 1, characterized in that: The electromagnet (501) and the magnetic block (502) are spaced 5 to 6 centimeters apart.
6. A power surge protector box as described in claim 1, characterized in that: The switch device (5) has a cavity inside, with one end of the spring fixed to the long block (503) and the other end fixed to the switch device (5).
7. A power surge protector box as described in claim 1, characterized in that: The stop button (6) is a push-button switch.