Lightning protection plugboard with grounding detection function

Abstract

The utility model relates to a lightning protection plugboard with grounding detection, which is characterized in that an insulating shell is provided with a three-plug female hole on the front side and a three-plug male head on the back side, an integrated full-mode protection module is arranged in the insulating shell, the integrated full-mode protection module is provided with a circuit board, a lightning protection element and a grounding detection circuit, and the lightning protection element and the grounding detection circuit are arranged on the circuit board; the three-plug male head protrudes out of the insulation shell and is adaptively plugged with an existing socket, series connection and conduction of L pairs of L lines, N pairs of N lines and PE pairs of PE lines are respectively carried out between the three-plug male head and the three-plug female hole by adopting power lines, a lightning protection element is connected in parallel to two adjacent connection lines, and the grounding detection circuit forms a loop through electricity taking between the L lines and the PE lines. And the LED indicating lamp is exposed from the front surface of the insulating shell. According to the utility model, the plug and play is realized, the installation and the use are very convenient, and the protection between a common mode and a differential mode can be realized by adopting a full-mode protection mode that three lightning protection elements are combined into a pair of power supplies.

Description

Technical Field

[0001] The utility model relates to the technical field of sockets, in particular to a lightning protection plug board with grounding detection. Background Art

[0002] With the widespread application of microelectronic devices, in order to prevent overvoltage introduced from the power supply side, such as lightning, various lightning protection devices have been widely used. The final lightning protection device is even more important, among which lightning protection power sockets have been widely used all over the world. Since lightning protection power strips are often placed on the desktop or floor, the fixed installation method has poor flexibility. In addition, the installation of commonly used lightning protection sockets is generally complicated and requires professional electricians to install and wire. At the same time, the internal lightning protection components use a single varistor structure, so there is a risk of leakage in long-term use. Summary of the invention

[0003] The utility model aims to provide a lightning protection plug-in board with ground detection, which can be plugged and unplugged, is easy to install and use, and has an optimized structure to realize lightning protection and ground detection functions.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A lightning protection plug board with grounding detection comprises an insulating shell, the insulating shell is provided with a three-pin female hole on the front and a three-pin male plug on the back, and an integrated full-mold protection module is provided inside the insulating shell, the integrated full-mold protection module has a circuit board and a lightning protection element arranged on the circuit board, and a grounding detection circuit with an LED indicator light; the three-pin male plug protrudes from the insulating shell and is adapted to be plugged into an existing socket, a power line is used between the three-pin male plug and the three-pin female hole to respectively conduct L to L line, N to N line and PE to PE line in series, and a lightning protection element is connected in parallel to two adjacent wiring items, the grounding detection circuit forms a loop by taking power between the L line and the PE line, and the LED indicator light is positioned on the insulating shell and exposed from the front of the insulating shell.

[0006] The above scheme is further that the lightning protection element is formed by a discharge tube connected in series with a varistor, and the three lightning protection elements are combined into a full-mode protection mode for the power supply.

[0007] The above solution is further that the insulating shell is a square box formed by combining the front and rear covers.

[0008] The above scheme is further characterized in that the model of the lightning protection element is KOV20D-275G.

[0009] The above scheme is further that the integrated full-mode protection module is also provided with a fuse, which is arranged at the connection between the L line and the lightning protection element and the grounding detection circuit.

[0010] The utility model realizes plug-and-play by designing a three-pin male head and a three-pin female hole, and no wiring is required. It can be plugged into a traditional socket, and can be installed by non-professional electricians. The original socket does not need to be replaced, and it is very convenient to install and use; an integrated full-mold protection module is arranged inside the insulating shell to increase the lightning protection function. When the plug of the electrical equipment is plugged into the three-pin female hole of the utility model, the surge energy at the end of the electrical equipment can be absorbed and protected, and the transient overvoltage amplitude is reduced to a level that the equipment can bear, which plays a role in protecting the electrical equipment. At the same time, it has a grounding monitoring function. The LED indicator light indicates that the ground wire is reliably grounded and the lightning protection element can work reliably. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 This is a schematic diagram of the front structure of a preferred embodiment of the utility model;

[0012] Attached Figure 2 for Figure 1 A schematic diagram of the back structure of the embodiment;

[0013] Attached Figure 3 for Figure 1 A side structural schematic diagram of an embodiment;

[0014] Attached Figure 4 for Figure 1 Schematic diagram of the internal wiring structure of the embodiment. DETAILED DESCRIPTION

[0015] The concept, specific structure and technical effects of the utility model will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the utility model.

[0016] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0017] See also Figure 1 , 2As shown in Figures 3 and 4, the utility model relates to a lightning protection plug board with grounding detection, including an insulating housing 1. For the convenience of manufacturing, assembly and use, the insulating housing 1 of this embodiment is a square box formed by combining a front cover and a rear cover, and the preferred structural size is 86 * 86 * 35mm, which is compact and convenient to use. The insulating housing 1 is provided with a three-pin female hole 11 on the front and a three-pin male plug 12 on the back, and an integrated full-mold protection module 2 is provided inside the insulating housing 1. The integrated full-mold protection module 2 has a circuit board and a lightning protection element 21 arranged on the circuit board, and a grounding detection circuit with an LED indicator 22, and is connected to the three-pin male plug 12 and the three-pin female hole 11 through corresponding ports. The three-pin male connector 12 protrudes from the insulating housing 1 and is adapted to be plugged into an existing socket. A power line is used between the three-pin male connector 12 and the three-pin female socket 11 to respectively conduct the L-to-L line, N-to-N line, and PE-to-PE line in series, and a lightning protection element 21 is connected in parallel to two adjacent wirings. The grounding detection circuit forms a loop by drawing power between the L line and the PE line. The LED indicator light 22 is positioned on the insulating housing 1 and exposed from the front of the insulating housing; the LED indicator light 22 is illuminated when the grounding detection circuit is powered on.

[0018] In this embodiment, the integrated full-mode protection module 2 is also provided with a fuse 23, which is set at the connection between the L line and the lightning protection element 21 and the grounding detection circuit to increase overvoltage protection. When the lightning protection plug board is properly grounded and the lightning protection function is normal, the grounding loop is connected and the LED indicator 22 is lit; when the plug board ground wire is not reliably grounded, the grounding loop is disconnected and the LED indicator 22 is off; through the light indication of the LED indicator 22, the user can clearly understand the grounding and lightning protection status of the plug board, which improves the safety of use.

[0019] In this embodiment, the lightning protection element 21 is formed by a discharge tube connected in series with a varistor. The preferred model of the lightning protection element 21 is KOV20D-275G. The lightning protection element 21 can avoid the leakage risk of the traditional single varistor structure, can discharge lightning instantaneous overcurrent and limit overvoltage, and absorb and protect the surge energy at the end of the electrical equipment. The three lightning protection elements on the lightning protection board are combined into a full-mode protection mode for the power supply.

[0020] When in use, the utility model can be installed by plugging the three-pin male plug 12 into a traditional socket without wiring. Non-professional electricians can also install it, and the original socket does not need to be replaced, so plug-and-play is achieved, and installation and use are quite convenient. Then the plug of the electrical equipment can be plugged into the three-pin female hole 11 of the utility model, and it can be powered on and used. At this time, the integrated full-mode protection module 2 on the utility model can absorb and protect the surge energy at the end of the electrical equipment, reduce the transient overvoltage amplitude to a level that the equipment can withstand, and play a role in protecting the electrical equipment; at the same time, it has a grounding monitoring function, and the LED indicator light indicates that the ground wire is reliably grounded and the lightning protection element can work reliably.

[0021] The utility model adopts a composite component of a varistor and a discharge tube in series and an overheat fuse, which has no leakage current and will not be short-circuited due to damage to the lightning protection unit, and is safe and reliable in operation; the three lightning protection components are combined into a full-mode protection mode for the power supply, which can provide protection between common mode (phase line to ground line, neutral line to ground line) and differential mode (phase line-neutral line).

[0022] Although the preferred specific embodiments of the present invention are described above in conjunction with the accompanying drawings, the present invention should not be limited to the structures and operations that are exactly the same as the above description and the accompanying drawings. For those skilled in the art, many equivalent improvements and changes can be made to the above embodiments through logical analysis, reasoning or limited experiments without exceeding the concept and scope of the present invention, but these improvements and changes should all fall within the scope of protection required by the present invention.

Claims

1. A lightning protection plug board with ground detection, comprising an insulating housing (1), characterized in that: An insulating housing (1) is provided with a three-pin female hole (11) on the front and a three-pin male plug (12) on the back, and an integrated full-mold protection module (2) is provided inside the insulating housing (1), the integrated full-mold protection module (2) having a circuit board, a lightning protection element (21) arranged on the circuit board, and a grounding detection circuit with an LED indicator (22); the three-pin male plug (12) protrudes from the insulating housing (1) and is adapted to be plugged into an existing socket, a power line is used between the three-pin male plug (12) and the three-pin female hole (11) to respectively conduct L to L lines, N to N lines, and PE to PE lines in series, and a lightning protection element (21) is connected in parallel to two adjacent wiring items, the grounding detection circuit forms a loop by drawing power between the L line and the PE line, and the LED indicator (22) is positioned on the insulating housing (1) and exposed from the front of the insulating housing.

2. The lightning protection board with grounding detection according to claim 1 is characterized in that: The lightning protection element (21) is formed by a discharge tube connected in series with a varistor.

3. The lightning protection board with grounding detection according to claim 1 is characterized in that: The insulating housing (1) is a square box formed by combining a front cover and a rear cover.

4. The lightning protection board with ground detection according to claim 2, characterized in that: The model of the lightning protection element (21) is KOV20D-275G.

5. The lightning protection board with ground detection according to claim 1, characterized in that: The integrated full-mode protection module (2) is also provided with a fuse (23), which is arranged at the connection between the L line, the lightning protection element (21) and the grounding detection circuit.

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