A double door flip-top ground insertion

By adopting a top cover bracket formed by bending thin metal sheets and a double-door flip-top design, the problems of insufficient functionality and practicality of existing floor sockets are solved, realizing the installation and waterproofing of two power supply modules and improving the overall performance of the floor socket.

CN224328951UActive Publication Date: 2026-06-05ZHEJIANG JINHAO ELECTRICAL

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG JINHAO ELECTRICAL
Filing Date
2025-05-27
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

The top cover bracket of existing floor sockets is usually made of plastic, which results in a thicker buildup, takes up more space, and makes it impossible to install two power supply modules, thus reducing functionality and practicality.

Method used

The top cover bracket, formed by bending thin metal sheets, and the double-door flip cover design, combined with the limiting structure and insulation materials, ensure the strength and space utilization efficiency, realize the installation of two power supply modules, and prevent water from flowing in through the drainage channel.

Benefits of technology

It improves the functionality and practicality of the floor socket, with a reasonable structure, safety and reliability. The thickness of the top cover bracket has been reduced, which does not take up too much space, prevents water from flowing in, and makes it more convenient to use.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224328951U_ABST
    Figure CN224328951U_ABST
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Abstract

A double door flip type ground socket, comprising a socket body, two power taking modules and two upper covers, the socket body is provided with a panel support plate, two installation positions are formed through the panel support plate, the power taking modules are matched with the corresponding installation positions, two upper cover insertion grooves are further arranged on the panel support plate, the upper cover insertion grooves are arranged on the front and back sides of the two installation positions respectively, upper cover supports are further arranged on the panel support plate, the upper cover supports are formed by bending metal sheets and are provided with open upper cover storage cavities, the upper cover storage cavities are vertically arranged and are communicated with the upper cover insertion grooves, the upper covers are matched with the installation positions and are slid into the upper cover storage cavities in the vertical direction. The double door flip type ground socket realizes reasonable installation of the two power taking modules, is better in functionality and practicability, and is more reasonable in overall volume and structure.
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Description

Technical Field

[0001] This utility model relates to the field of floor socket technology, and in particular to a double-door flip-top floor socket. Background Technology

[0002] A floor outlet is a socket installed on the ground or similar location for connecting to fixed cabling. It typically serves as the terminal and outlet of a floor cabling system, extracting power, signals, and data from the system. It is widely used in large open-plan indoor spaces such as offices, airports, hotels, shopping malls, and homes.

[0003] Currently, most floor socket top covers on the market are made of plastic. In order to ensure strength, plastic top covers are relatively thick, thus taking up most of the space. Therefore, it is impossible to install two power supply modules, resulting in poor functionality and practicality. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a double-door flip-top floor socket with better functionality and practicality, and a more reasonable overall size and structure.

[0005] The technical solution adopted by this utility model to solve its technical problem is a double-door flip-top floor socket, including a socket body, two power supply modules, and two top covers. The socket body is provided with a panel support plate, and two mounting positions are formed through the panel support plate. The power supply modules cooperate with the corresponding mounting positions. The panel support plate is also provided with two top cover slots, which are respectively arranged on the front and rear sides opposite to the two mounting positions. The lower end of the panel support plate is also fixed with a top cover bracket at the position of the top cover slot. The top cover bracket is formed by bending a thin metal plate to form an open top cover storage cavity. The top cover storage cavity has a vertical structure and is connected to the top cover slot. The top cover is correspondingly matched with the mounting position and slides into the top cover storage cavity when vertical.

[0006] The advantages of adopting the above technical solution are as follows: In the above structure, by setting two power supply modules, the functionality of the floor socket is improved. The upper cover bracket is formed by bending a thin metal plate, which can reduce the thickness of the metal upper cover bracket while meeting the strength requirements. Therefore, the installation space occupied by the upper cover bracket is small, thus making room for the installation of the two power supply modules. This makes the overall size of the floor socket with two power supply modules more reasonable and practical. The use of two upper covers achieves the purpose of double opening. After the upper cover is flipped vertically, it slides into the upper cover storage cavity, so it will not obstruct the use of the plug and facilitates the use of the operator. The overall structural design is more reasonable.

[0007] Furthermore, the lower end face of the panel support plate is provided with mounting side plate portions on both the left and right sides of the corresponding mounting position. The mounting side plate portions are L-shaped structures and the vertical section is connected to the lower end face of the panel support plate. The power supply module is provided with a first limiting protrusion and a second limiting protrusion distributed vertically. The first limiting protrusion and the second limiting protrusion abut against the upper and lower sides of the horizontal section of the mounting side plate portion, respectively, and the second limiting protrusion is an elastic structure.

[0008] The advantages of the above technical solution are as follows: The corresponding power-taking module is inserted from the front of the panel support plate into the corresponding mounting position. The lateral section of the mounting side plate causes the elastic second limiting protrusion to bend and approach the power-taking module. After insertion, the second limiting protrusion returns to its original state and forms a limiting fit with the lateral section of the mounting side plate, thereby preventing the power-taking module from coming out of the mounting position upwards. The first limiting protrusion also forms a limiting fit with the lateral section of the mounting side plate, thereby preventing the power-taking module from coming out of the mounting position downwards. At the same time, the fit between the first limiting protrusion and the lateral section of the mounting side plate ensures that the force on the front of the power-taking module is ultimately applied to the panel support plate, making it less likely for the power-taking module to fall off. When disassembly is required, only the second limiting protrusion needs to be applied. The overall structural design is reasonable, and installation and disassembly are convenient.

[0009] Furthermore, the lower end face of the panel support plate is provided with a limiting ring plate on the periphery of the mounting position, the mounting side plate is formed on the limiting ring plate, and the limiting side plate is also provided at corresponding positions on the front and rear sides of the limiting ring plate, and the limiting side plate is vertically arranged.

[0010] The advantages of the above technical solution are as follows: by setting a limiting ring plate and placing the mounting side plate on the limiting ring plate, the mounting side plate has higher strength and is less prone to deformation under stress. In addition, limiting side plates are set on the front and rear sides of the limiting ring plate, which can limit the position of the power supply module on the front and rear sides. The panel support plate with the above structure makes the installation of the power supply module more stable.

[0011] Furthermore, the upper cover includes an upper cover plate, an upper cover liner, and a rubber pad. The upper cover plate is a thin metal plate, and its four edges are clamped to the upper cover liner by riveting. The rubber pad is fixedly disposed on the lower end surface of the upper cover liner.

[0012] The advantages of the above technical solution are as follows: by using the combination structure of the metal sheet top cover and the top cover liner, the strength of the top cover is higher and the service life is longer. The installation and fixing effect of the top cover and the top cover liner is better. The rubber pad can effectively prevent dust and other foreign objects from entering the socket of the power supply module, thus achieving the dustproof function.

[0013] Furthermore, the socket body is also provided with a face frame, the four edges of which are clamped to the panel support plate by riveting, and anti-detachment protrusions are integrally formed on the left and right sides of the upper cover plate at corresponding positions.

[0014] The advantages of the above technical solution are as follows: During installation, the top cover, which is assembled from the top cover plate, the top cover liner plate, and the rubber pad, is placed on the panel support plate. Then, the face frame is fixed to the panel support plate through a riveting process. This method of fitting ensures that the two are firmly fixed. In addition, by setting an anti-detachment protrusion on the top cover plate, when the top cover is pulled out from the top cover storage cavity, a limiting fit is formed between the anti-detachment protrusion and the face frame, thereby preventing the top cover from falling out. The structural design is reasonable, and the anti-detachment protrusion is formed on the top cover plate. Compared with forming the anti-detachment protrusion on the top cover liner plate, since the top cover plate is made of thin metal sheet, the thickness of the anti-detachment protrusion is also smaller.

[0015] Furthermore, the wall thickness of the upper cover plate and the upper cover bracket is no greater than 0.5 mm, and the wall thickness of the upper cover liner is no greater than 1.5 mm.

[0016] The advantages of adopting the above technical solution are: the overall thickness of the top cover plate and the top cover liner plate after riveting will be less than 2.5mm, and the thickness of the rubber pad will also be less than 3mm. In addition, the drop gap between the top cover and the top cover storage cavity is 1-1.5mm, and the wall thickness of the top cover frame is also less than 0.5mm, thus meeting the requirements of two 42mm wide plugs and the 97.5mm space inside the installation box.

[0017] Furthermore, the socket body is also provided with a plastic panel, which is located between the face frame and the panel support plate. A drainage groove is also provided on the plastic panel at a position opposite to the two top covers, and a side drainage through hole is also provided in the drainage groove.

[0018] The advantages of adopting the above technical solution are: by setting a plastic panel and setting a drainage groove at the relative position of the plastic panel to the two top covers, water is prevented from flowing in between the two top covers when mopping the floor, effectively preventing water from flowing to the power supply module, making it safer to use.

[0019] Furthermore, the upper cover bracket is also provided with insulating material, which is used to prevent the wires on the power supply module from coming into contact with the upper cover bracket.

[0020] The advantages of adopting the above technical solution are: the use of insulating materials prevents the wires from touching the top cover and making the top cover live, ensuring safety, reliability, and practicality.

[0021] Furthermore, the left and right sides of the upper cover bracket are also integrally formed with clamping parts.

[0022] The advantages of adopting the above technical solution are: the clamping part prevents the upper cover bracket from opening, making it more reasonable to use.

[0023] Furthermore, a grounding wire is provided on the panel support plate.

[0024] The advantages of adopting the above technical solution are: the grounding wire prevents the panel support plate from becoming live, ensuring safety, reliability, and practicality. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0027] Figure 3 This is a cross-sectional view of the structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the panel support plate structure of this utility model. Figure 1 ;

[0029] Figure 5 This is a schematic diagram of the panel support plate structure of this utility model. Figure 2 ;

[0030] Figure 6 This is a schematic diagram of the upper cover support structure of this utility model;

[0031] Figure 7 This is a schematic diagram of the power supply module structure of this utility model;

[0032] Figure 8 This is a schematic diagram of the upper cover plate structure of this utility model;

[0033] Figure 9 This is a schematic diagram of the plastic panel structure of this utility model.

[0034] In the diagram: 1-Socket body, 2-Power supply module, 3-Top cover, 4-Panel support plate, 5-Mounting position, 6-Top cover slot, 7-Top cover bracket, 8-Top cover storage cavity, 9-Mounting side plate, 10-First limiting protrusion, 11-Second limiting protrusion, 12-Limiting ring plate, 13-Limiting side plate, 14-Top cover plate, 15-Top cover liner, 16-Rubber pad, 17-Face frame, 18-Anti-detachment protrusion, 19-Plastic panel, 20-Drainage groove, 21-Side drainage through hole, 22-Insulating material, 23-Clamping part, 24-Grounding wire. Detailed Implementation

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model and / or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort. Furthermore, references to orientation only indicate the relative positional relationship between the components, not their absolute positional relationship.

[0036] Please see Figures 1 to 9 As shown, a double-door flip-top floor socket includes a socket body 1, two power supply modules 2, and two top covers 3. The socket body 1 has a panel support plate 4, through which two mounting positions 5 are formed. The power supply modules 2 cooperate with the corresponding mounting positions 5, and the power supply modules 2 are installed on the panel support plate 4 through cooperation with the mounting positions 5. The panel support plate 4 also has two top cover slots 6, which are respectively arranged on the front and rear sides of the two mounting positions 5. The lower end of the panel support plate 4 is also fixed with a top cover bracket 7 at the position of the top cover slot 6. The top two sides of the top of the top cover bracket 7 have fixing flanges, and fixing through holes are formed on the fixing flanges. The fixing through holes are used to fix the top cover bracket 7 through cooperation with screws. The top cover bracket 7 is formed by bending a thin metal plate to form an open top cover storage cavity 8. The upper cover storage cavity 8 has a vertical structure and is connected to the upper cover slot 6. The upper cover 3 corresponds to the mounting position 5 and slides into the upper cover storage cavity 8 when vertical. In the above structure, by setting two power-taking modules 2, the functionality of the floor socket is improved. The upper cover bracket 7 is made of metal sheet bending. While meeting the strength requirements, the thickness of the metal upper cover bracket 7 can be relatively smaller. Therefore, the installation space occupied by the upper cover bracket 7 is small, thus making room for the installation of the two power-taking modules 2. This makes the overall size of the floor socket with two power-taking modules 2 more reasonable and practical. The use of two upper covers 3 achieves the purpose of double opening, which is more reasonable. After the upper cover 3 is flipped to vertical, it slides into the upper cover storage cavity 8, so it will not obstruct the use of the plug and facilitates the use of the operator. The overall structural design is more reasonable.

[0037] In this embodiment, the lower end face of the panel support plate 4 is provided with mounting side plate portions 9 on both the left and right sides of the corresponding mounting position 5. The mounting side plate portions 9 are L-shaped structures and their vertical sections are connected to the lower end face of the panel support plate 4. The power-taking module 2 is provided with a first limiting protrusion 10 and a second limiting protrusion 11 distributed vertically. More specifically, the first limiting protrusion 10 is a rectangular protrusion, and the second limiting protrusion 11 is a barb with an elastic structure. The first limiting protrusion 10 and the second limiting protrusion 11 respectively abut against the upper and lower sides of the horizontal section of the mounting side plate portion 9. That is to say, when the power-taking module 2 is installed in place, the horizontal section of the mounting side plate portion 9 will be limited by the first limiting protrusion 10 and the second limiting protrusion 11, thereby realizing the installation and fixation of the power-taking module 2. In the above structure, the corresponding power-taking module 2 is inserted from the front of the panel support plate 4 into the corresponding mounting position 5. Within the mounting position 5, the transverse section of the mounting side plate 9 causes the elastic second limiting protrusion 11 to bend and approach the power-taking module. After insertion, the second limiting protrusion 11 returns to its original state and forms a limiting engagement with the transverse section of the mounting side plate 9. The hook of the second limiting protrusion 11 locks onto the transverse section of the mounting side plate 9, thereby preventing the power-taking module 2 from detaching upwards from the mounting position 5. The first limiting protrusion 10 also forms a limiting engagement with the transverse section of the mounting side plate 9, thereby preventing the power-taking module 2 from detaching downwards from the mounting position 5. At the same time, the engagement between the first limiting protrusion 10 and the transverse section of the mounting side plate 9 ensures that the force on the front of the power-taking module 2 is ultimately applied to the panel support plate 4, making it less likely for the power-taking module 2 to detach. When disassembly is required, only the second limiting protrusion 11 needs to be applied. The overall structural design is reasonable, and installation and disassembly are convenient.

[0038] In this embodiment, the lower end face of the panel support plate 4 is provided with limiting ring plates 12 around the mounting position 5. The mounting side plate 9 is formed on the limiting ring plate 12. Limiting side plate portions 13 are also provided at corresponding positions on the front and rear sides of the limiting ring plate 12. The limiting side plate portions 13 are vertically arranged. In the above structure, by setting the limiting ring plate 12 and setting the mounting side plate portion 9 on the limiting ring plate 12, the strength of the mounting side plate portion 9 is higher and the mounting side plate portion 9 is less prone to deformation under stress. The limiting side plate portions 13 are also provided on the front and rear sides of the limiting ring plate 12. The limiting side plate portions 13 can limit the position of the front and rear sides of the power supply module 2. At the same time, the limiting ring plate 12 also has a certain function of positioning the power supply module 2. The panel support plate 4 with the above structure makes the installation of the power supply module 2 more stable.

[0039] In this embodiment, the upper cover 3 includes an upper cover plate 14, an upper cover liner 15, and a rubber pad 16. The upper cover plate 14 is a thin metal plate, and its four edges are clamped to the upper cover liner 15 by riveting. The rubber pad 16 is fixedly disposed on the lower end surface of the upper cover liner 15. In the above structure, by adopting the cooperation structure of the upper cover plate 14 and the upper cover liner 15 made of thin metal plate, the upper cover 3 has higher strength and longer service life. The installation and fixing effect of the upper cover plate 14 and the upper cover liner 15 is good. The setting of the rubber pad 16 can effectively prevent dust and other foreign objects from entering the socket of the power supply module 2, and realize the dustproof function. It should be noted that the thin metal plate and its four edges are riveted to form a rectangular annular cavity with the upper cover liner 15. The rubber pad 16 is attached and fixed to the rectangular annular cavity by adhesive.

[0040] In this embodiment, the socket body 1 is also provided with a face frame 17. The four edges of the face frame 17 are clamped to the panel support plate 4 by riveting. The upper cover plate 14 also has anti-detachment protrusions 18 integrally formed at corresponding positions on the left and right sides. The hollow cavity in the middle of the face frame 17 cooperates with two mounting positions 5. The forming position of the anti-detachment protrusions 18 on the upper cover plate 14 is exactly at the position relative to the upper cover slot 6 when the upper cover plate 14 is placed horizontally in the mounting position 5. After the face frame 17 is fixed, it will also prevent the upper cover 3 from being detached from the socket body 1 by cooperating with the anti-detachment protrusions 18 on the upper cover plate 14. In the above structure, during installation, the upper cover plate 14 and the upper cover 17 will be fixed to the socket body 1. The top cover 3, assembled from the liner 15 and the rubber pad 16, is placed on the panel support plate 4. The face frame 17 is then fixed to the panel support plate through a riveting process. This method of fitting ensures that the two are firmly fixed. Furthermore, by setting an anti-detachment protrusion 18 on the top cover plate 14, when the top cover 3 is pulled out from the top cover storage cavity 8, a limiting fit is formed between the anti-detachment protrusion 18 and the face frame 17, thereby preventing the top cover 3 from falling out. The structural design is reasonable, and the anti-detachment protrusion 18 is formed on the top cover plate 14. Compared to forming the anti-detachment protrusion 18 on the top cover liner 15, since the top cover plate 14 is made of a thin metal plate, the thickness of the anti-detachment protrusion 18 will also be smaller.

[0041] In this embodiment, the wall thickness of the upper cover plate 14 and the upper cover bracket 7 is no greater than 0.5mm, the wall thickness of the upper cover liner 15 is no greater than 1.5mm, the upper cover plate 14 and the upper cover bracket 7 are both stainless steel plates, and the upper cover liner 15 is a galvanized plate. In the above structure, the overall thickness of the upper cover plate 14 and the upper cover liner 15 after riveting will be less than 2.5mm, and the thickness of the rubber pad will also be less than 3mm. In addition, the upper cover 3 has a drop gap of 1-1.5mm in the upper cover storage cavity 8, and the wall thickness of the upper cover bracket 7 is also less than 0.5mm, thereby satisfying the space of 97.5mm inside the mounting box for two 42mm wide plugs.

[0042] In this embodiment, the wall thickness of the upper cover plate 14 is 0.3 mm, the wall thickness of the upper cover is 0.5 mm, and the wall thickness of the upper cover liner is 1.5 mm.

[0043] In this embodiment, the socket body 1 is also provided with a plastic panel 19, which is located between the face frame 17 and the panel support plate 4. A drainage groove 20 is also provided on the plastic panel 19 at a position between the two upper covers 3. A side drainage through hole 21 is also provided in the drainage groove 20. By setting the plastic panel 19 and setting the drainage groove 20 at the relative position of the plastic panel 19 to the two upper covers 3, water is prevented from flowing into the middle of the two upper covers 3 when mopping the floor, effectively preventing water from flowing into the power supply module 2, making it safer to use.

[0044] In this example, the upper cover bracket 7 is also provided with insulating material 22. The insulating material 22 is used to prevent the wires on the power supply module 3 from contacting the upper cover bracket 7. More specifically, the insulating material 22 can be insulating paper or insulating glue. The setting of the insulating material 22 prevents the wires from touching the upper cover 3 and making the upper cover 3 live, which is safe, reliable and practical.

[0045] In this example, clamping parts 23 are integrally formed on both the left and right sides of the upper cover bracket 3. In the above structure, the clamping parts 23 are bent. Since the upper cover bracket 3 is formed by bending a thin metal plate to form an open upper cover storage cavity 8, the clamping parts 23 prevent the upper cover bracket 3 from opening, making it more reasonable to use.

[0046] In this example, the panel support plate 4 is equipped with a grounding wire 24. The grounding wire 24 prevents the panel support plate 4 from becoming energized, ensuring safety, reliability, and practicality.

[0047] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A double-door flip-top floor socket, characterized in that: The socket includes a socket body (1), two power supply modules (2), and two top covers (3). The socket body (1) is provided with a panel support plate (4). Two mounting positions (5) are formed through the panel support plate (4). The power supply modules (2) cooperate with the corresponding mounting positions (5). The panel support plate (4) is also provided with two top cover slots (6). The top cover slots (6) are respectively arranged on the front and rear sides opposite to the two mounting positions (5). The lower end of the panel support plate (4) is also fixed with a top cover bracket (7) at the position facing the top cover slot (6). The top cover bracket (7) is formed by bending a thin metal plate and forming an open top cover storage cavity (8). The top cover storage cavity (8) has a vertical structure and is connected to the top cover slot (6). The top cover (3) is correspondingly cooperated with the mounting position (5) and slides into the top cover storage cavity (8) when vertical.

2. The double-door flip-top floor socket according to claim 1, characterized in that: The lower end face of the panel support plate (4) is provided with mounting side plate portions (9) on both the left and right sides of the corresponding mounting position (5). The mounting side plate portions (9) are L-shaped and the vertical section is connected to the lower end face of the panel support plate (4). The power supply module (2) is provided with a first limiting protrusion (10) and a second limiting protrusion (11) distributed vertically. The first limiting protrusion (10) and the second limiting protrusion (11) respectively abut against the upper and lower sides of the horizontal section of the mounting side plate portion (9), and the second limiting protrusion (11) is an elastic structure.

3. A double-door flip-top floor socket according to claim 2, characterized in that: The lower end face of the panel support plate (4) is provided with a limiting ring plate (12) on the periphery of the mounting position (5). The mounting side plate (9) is formed on the limiting ring plate (12). The limiting ring plate (12) is also provided with a limiting side plate (13) at the corresponding positions on the front and rear sides. The limiting side plate (13) is vertically arranged.

4. A double-door flip-top floor socket according to claim 1, characterized in that: The upper cover (3) includes an upper cover plate (14), an upper cover liner (15), and a rubber pad (16). The upper cover plate (14) is a thin metal plate and its four edges are clamped to the upper cover liner (15) by riveting. The rubber pad (16) is fixedly disposed on the lower end surface of the upper cover liner (15).

5. A double-door flip-top floor socket according to claim 4, characterized in that: The socket body (1) is also provided with a face frame (17). The four edges of the face frame (17) are clamped to the panel support plate (4) by riveting. The upper cover plate (14) is also integrally formed with anti-detachment protrusions (18) at the corresponding positions on the left and right sides.

6. A double-door flip-top floor socket according to claim 4, characterized in that: The wall thickness of the upper cover plate (14) and the upper cover bracket (7) is no greater than 0.5 mm, and the wall thickness of the upper cover liner plate (15) is no greater than 1.5 mm.

7. A double-door flip-top floor socket according to claim 5, characterized in that: The socket body (1) is also provided with a plastic panel (19), which is located between the face frame (17) and the panel support plate (4). A drainage groove (20) is also provided on the plastic panel (19) at a position between the two upper covers (3), and a side drainage through hole (21) is also provided in the drainage groove (20).

8. A double-door flip-top floor socket according to claim 1, characterized in that: The upper cover bracket (7) is also provided with an insulating material (22), which is used to prevent the wires on the power extraction module (2) from contacting the upper cover bracket (7).

9. A double-door flip-top floor socket according to claim 1, characterized in that: The upper cover bracket (7) also has clamping parts (23) integrally formed on both the left and right sides.

10. A double-door flip-top floor socket according to claim 1, characterized in that: The panel support plate (4) is provided with a grounding wire (24).