A safety socket

By introducing protective doors and dike structures into the socket design, the socket holes are sealed and the ground wire is separated, which solves the problem of water ingress into the socket causing the live wire and the ground wire to become connected, thus improving the safety of the socket.

CN116470336BActive Publication Date: 2026-06-30SHENZHEN ZHONGKEDIANGONG NEW ENERGY TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN ZHONGKEDIANGONG NEW ENERGY TECH CO LTD
Filing Date
2023-04-19
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing sockets are prone to water ingress, which can cause the live wire and ground wire to connect, leading to unnecessary circuit breaker tripping.

Method used

A safety socket is designed, including a housing, a protective door, and a dike structure. The housing is provided with two-prong and three-prong sockets. The protective door closes the sockets when the prongs are not inserted. The dike forms a ground wire isolation cavity to prevent conductive liquid from connecting the live wire and the ground wire.

Benefits of technology

It effectively prevents the live wire and ground wire from connecting due to water ingress into the socket, avoids unnecessary circuit tripping, and improves the safety of the socket.

✦ Generated by Eureka AI based on patent content.

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Abstract

The safety socket provided in this application includes: a housing, comprising a bottom housing and a front housing unit, the front housing unit comprising a first housing disposed above the bottom housing; the first housing having at least one set of two-prong sockets and one set of three-prong sockets; the two-prong sockets including a live wire socket and a neutral wire socket, and the three-prong sockets including a live wire socket, a neutral wire socket, and a ground wire socket; the ground wire socket being located between the live wire socket and the neutral wire socket of the two-prong sockets; a protective door disposed below the first housing, used to close the live wire socket and the neutral wire socket when the prongs are not inserted into them; a dike being disposed below the first housing, the interior of which forms a ground wire separation cavity; the ground wire separation cavity being formed at the ground wire socket. This solves the problem in the prior art where water ingress into the socket can easily cause the live wire and ground wire to connect, leading to unnecessary tripping of the power circuit.
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Description

Technical Field

[0001] This invention relates to the field of socket technology, and in particular to a safety socket. Background Technology

[0002] Sockets are commonly used electrical appliances in daily life. If water or conductive liquids get into the socket, it can cause safety accidents. Therefore, users have requirements for the safety of sockets.

[0003] For example, when the prongs are not inserted into the socket, the socket needs to be sealed to prevent water and conductive liquids from entering the socket. When the prongs need to be inserted into the socket to establish an electrical connection, the socket needs to be open to allow the prongs to be inserted.

[0004] In the existing technology, the ground wire connector and the live wire connector of the socket are prone to conduction due to water entering the socket, which causes the current to be detected in the ground wire in the power line, resulting in unnecessary tripping and making the entire line unable to be used normally.

[0005] Therefore, existing technologies still have problems that need to be solved. Summary of the Invention

[0006] The main objective of this invention is to provide a safety socket that addresses the problem in existing technologies where water ingress into the socket can cause the live wire and ground wire to connect, leading to unnecessary circuit breaker tripping.

[0007] To achieve the above objectives, the present invention proposes a safety socket comprising: a housing, the housing including a bottom shell and a front shell unit, the front shell unit including a first housing disposed above the bottom shell; the first housing having at least one set of two-prong sockets and one set of three-prong sockets; the two-prong sockets including a live wire socket and a neutral wire socket, the three-prong sockets including a live wire socket, a neutral wire socket, and a ground wire socket; the ground wire socket being located between the live wire socket and the neutral wire socket of the two-prong sockets; a protective door disposed below the first housing, used to close the live wire socket and the neutral wire socket when the prongs are not inserted into the live wire socket and the neutral wire socket; a dam being disposed below the first housing, the dam forming a ground wire separation cavity; the ground wire separation cavity being formed at the ground wire socket.

[0008] Preferably, the cofferdam extends downward from the first shell and is disposed around the grounding socket.

[0009] Preferably, the face shell unit includes a second shell disposed below the first shell, and a protective door is located between the first shell and the second shell; the cofferdam extends upward from the second shell.

[0010] Preferably, the protective door includes a two-pronged insertion protective door and a three-pronged insertion protective door. The two-pronged insertion protective door has a live wire pushing surface and a neutral wire pushing surface. A avoidance part for avoiding the cofferdam is provided between the live wire pushing surface and the neutral wire pushing surface.

[0011] Preferably, a ground wire isolation cavity is formed below the second housing, and the ground wire connector is disposed in the ground wire isolation cavity; the ground wire isolation cavity is used to isolate the ground wire connector from the live wire connector inside the socket housing, and a dam is formed above the ground wire isolation cavity; the ground wire isolation cavity is connected to the ground wire separation cavity.

[0012] Preferably, the cofferdam is integrally formed on the second shell.

[0013] Preferably, a partition plate is provided between the first housing and the second housing, with a two-pronged socket protective door and a three-pronged socket protective door located on both sides of the partition plate, and can slide along the length of the partition plate to open or close the live wire socket and the neutral wire socket.

[0014] Preferably, the first housing has a downwardly extending socket wall, inside which a live wire socket and a neutral wire socket are formed, and the lower end face of the socket wall is inclined; the protective door has an inclined pushing surface, and when the plug pins are not inserted into the live wire socket and the neutral wire socket, the pushing surface cooperates with the lower end face of the socket wall to seal the live wire socket and the neutral wire socket.

[0015] Preferably, the safety socket includes a drive member for driving the protective door to reset so that when the plug pins are not inserted into the live wire socket and the neutral wire socket, the push surface tightly abuts against the lower end face of the socket wall.

[0016] Preferably, the driving component is a spring, which is connected to one end of the protective door and is inclined downwards.

[0017] Preferably, the driving component is a magnet, which includes a first magnet and a second magnet, and the first magnet and the second magnet attract each other; the first magnet is disposed on the protective door, and the second magnet is disposed on the first housing.

[0018] The safety socket provided in this application includes: a housing, comprising a bottom housing and a front housing unit, the front housing unit comprising a first housing disposed above the bottom housing; the first housing having at least one set of two-prong sockets and one set of three-prong sockets; the two-prong sockets including a live wire socket and a neutral wire socket, and the three-prong sockets including a live wire socket, a neutral wire socket, and a ground wire socket; the ground wire socket being located between the live wire socket and the neutral wire socket of the two-prong sockets; a protective door disposed below the first housing, used to close the live wire socket and the neutral wire socket when the prongs are not inserted into them; a dike being disposed below the first housing, the interior of which forms a ground wire separation cavity; the ground wire separation cavity being formed at the ground wire socket. This solves the problem in the prior art where water ingress into the socket can easily cause the live wire and ground wire to connect, leading to unnecessary tripping of the power circuit. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 A schematic diagram of an embodiment of the safety socket provided by the present invention;

[0021] Figure 2 An exploded view of an embodiment of the safety socket provided by the present invention;

[0022] Figure 3 Another schematic diagram of an embodiment of the safety socket provided by the present invention;

[0023] Figure 4 A schematic diagram of the first housing of an embodiment of the safety socket provided by the present invention;

[0024] Figure 5 Another schematic diagram of an embodiment of the safety socket provided by the present invention.

[0025] Explanation of icon numbers:

[0026] label name label name 100 case 210 Two-pronged socket protective door 110 bottom shell 211 Fire-driven surface 120 shell unit 212 Zero line driving surface 121 First shell 213 Avoidance section 121a Two-prong socket 220 Three-pronged socket protective door 121b Three-prong socket 230 Promoting the surface 121c Socket wall 300 cofferdam 122 FireWire jack 310 Grounding partition cavity 123 Neutral socket 400 Grounding isolation cavity 124 grounding socket 500 partition 125 Second shell 600 Drive components 200 protective door 610 spring

[0027] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0031] Sockets are commonly used electrical appliances in daily life. If water or conductive liquids get into the socket, it can cause safety accidents. Therefore, users have requirements for the safety of sockets.

[0032] For example, when the prongs are not inserted into the socket, the socket needs to be sealed to prevent water and conductive liquids from entering the socket. When the prongs need to be inserted into the socket to establish an electrical connection, the socket needs to be open to allow the prongs to be inserted.

[0033] To address the aforementioned issues, this patent provides a safety socket designed to resolve the problem in existing technologies where water ingress into the socket can easily cause the live wire and ground wire to connect, leading to unnecessary circuit breaker tripping.

[0034] For ease of understanding, the specific implementation methods of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0035] Please see Figure 1-3 A safety socket includes: a housing 100, the housing 100 including a bottom housing 110 and a front housing unit 120, the front housing unit 120 including a first housing 121 disposed above the bottom housing 110; the first housing 121 is provided with at least one set of two-prong sockets 121a and one set of three-prong sockets 121b; the two-prong sockets 121a include a live wire socket 122 and a neutral wire socket 123, and the three-prong sockets 121b include a live wire socket 122, a neutral wire socket 123 and a ground wire socket. 124; The grounding socket 124 is located between the live wire socket 122 and the neutral wire socket 123 of the two-pin socket 121a; The protective door 200 is located below the first housing 121 and is used to close the live wire socket 122 and the neutral wire socket 123 when the pins are not inserted into them; A dike 300 is provided below the first housing 121, and a grounding separation cavity 310 is formed inside the dike 300; The grounding separation cavity 310 is formed at the grounding socket 124.

[0036] In this embodiment, the safety socket includes a housing 100, which includes a bottom shell 110 and a front shell unit 120. The front shell unit includes a first housing 121, which is disposed above the bottom shell 110, so that the first housing 121 can prevent most of the conductive liquid from entering the safety socket from above, and the bottom shell 110 can prevent most of the conductive liquid from entering the safety socket from below. The first housing 121 is provided with at least one set of two-pronged sockets 121a and one set of three-pronged sockets 121b. The two-pronged socket 121a includes a live wire socket 122 and a neutral wire socket 123. The three-pronged socket 121b includes a live wire socket 122, a neutral wire socket 123 and a ground wire socket 124. The ground wire socket 124 is located between the live wire socket 122 and the neutral wire socket 123 of the two-pronged socket 121a. This arrangement allows the two-pronged sockets 121a and the three-pronged sockets 121b to occupy a relatively small area of ​​the first housing 121, thereby improving the utilization rate of the first housing 121 and enabling more sets of sockets to be provided on a first housing 121 of a certain size. A protective door 200 is located below the first housing 121. The protective door 200 can close the live wire socket 122 and the neutral wire socket 123 when the plug is not inserted, effectively preventing conductive liquid from entering the safety socket from the first housing 121. A dike 300 is provided below the first housing 121, and a ground wire separation cavity 310 is formed inside the dike 300. The ground wire separation cavity 310 is formed at the ground wire socket 124, so that if conductive liquid accidentally enters the safety socket, the dike 300 will prevent the conductive liquid from connecting the live wire and the ground wire, thus preventing the entire circuit from tripping due to water entering a socket and causing the live wire and neutral wire to become connected. Therefore, the solution of this application can solve the problem in the prior art where water entering the socket can easily cause the live wire and ground wire to become connected, leading to unnecessary tripping of the power circuit.

[0037] It should be noted that the safety socket prevents conductive liquid from connecting the live wire and the ground wire through the separation function of the dike 300. The dike 300 can be implemented in various ways. This embodiment does not limit the specific implementation method that meets the above requirements. For ease of understanding, this application provides two preferred implementation methods.

[0038] Method 1.

[0039] Optionally, a cofferdam 300 extends downward from the first housing 121 and is disposed around the grounding socket 124.

[0040] In this embodiment, the dike 300 extends downward from the first housing 121 and is disposed around the grounding socket 124, so that the dike 300 can act as a separator to the conductive liquid entering from the first housing 121, thereby preventing the conductive liquid from connecting the live wire and the ground wire.

[0041] Method 2.

[0042] Please see Figure 2-3 The face shell unit 120 includes a second shell 125, which is disposed below the first shell 121. The protective door 200 is located between the first shell 121 and the second shell 125. The cofferdam 300 extends upward from the second shell 125.

[0043] In this embodiment, the faceplate unit 120 includes a second shell 125, which is disposed below the first shell 121. A protective door 200 is located between the first shell 121 and the second shell 125. A dike 300 extends upward from the second shell 125, allowing the dike 300 to act as a separator against conductive liquid entering from the first shell 121, thus preventing the conductive liquid from connecting the live wire and the ground wire. Furthermore, the second shell 125's location below the first shell 121 ensures that even if conductive liquid accidentally enters from the first shell 121, it can still be blocked by the second shell 125. The conductive metal connector of the socket is located below the second shell 125, hindering or reducing contact between water and the conductive connector, thereby improving the safety of the socket.

[0044] The second housing 125 can also serve as a support component for the protective door 200. When the plug is inserted into the socket and presses down on the protective door 200, it supports the protective door 200, thereby allowing the protective door 200 to move under the pushing action of the plug pins to open the socket.

[0045] It should be noted that, based on the aforementioned technical solution where both the protective door 200 and the cofferdam 300 are located below the first housing 121 and the grounding socket 124 is located between the live wire socket 122 and the neutral wire socket 123 of the two-pronged socket 121a, there is a further technical problem of how to avoid mutual interference between the protective door 200 and the cofferdam 300 when the protective door 200 is pushed. To solve the above problem, the following solution is further provided.

[0046] Please see Figure 2-3 The protective door 200 includes a two-pronged insertion protective door 210 and a three-pronged insertion protective door 220. The two-pronged insertion protective door 210 has a live wire pushing surface 211 and a neutral wire pushing surface 212. A avoidance part 213 for avoiding the cofferdam 300 is provided between the live wire pushing surface 211 and the neutral wire pushing surface 212.

[0047] In this embodiment, the ground wire socket 124 is located between the live wire socket 122 and the neutral wire socket 123, and the embankment 300 is located at the ground wire socket 124. A clearance part 213 for avoiding the embankment 300 is provided between the live wire pushing surface 211 and the neutral wire pushing surface 212 of the two-pronged socket protective door 210, so that when the two-pronged socket protective door 210 is pushed, it can avoid the embankment 300 and thus not collide with the embankment 300.

[0048] To further improve the effectiveness of the cofferdam 300 in isolating the ground wire and the live wire, this invention also proposes a zero-one embodiment, please refer to [the original text]. Figure 2 and Figure 5 In this embodiment, a ground wire isolation cavity 400 is formed below the second housing 125, and the ground wire connector is disposed in the ground wire isolation cavity 400. The ground wire isolation cavity 400 is used to isolate the ground wire connector from the live wire connector inside the socket housing 100, and a dam 300 is formed above the ground wire isolation cavity 400. The ground wire isolation cavity 400 is connected to the ground wire separation cavity 310.

[0049] In this embodiment, by forming a ground isolation cavity 400 below the second housing 125, the ground connector located in the ground isolation cavity 400 is separated from the live connector. Thus, under the combined action of the containment dam 300, the technical effect of preventing conductive liquid from connecting the live wire and the ground wire can be achieved. Furthermore, the ground isolation cavity 400 and the ground separation cavity 310 are connected, allowing the pins to contact the ground connector.

[0050] It should be noted that, based on the aforementioned technical solution where the cofferdam 300 extends upward from the second shell 125, there is still a technical problem regarding how the cofferdam 300 is fixed relative to the second shell 125. To solve the above problem, the following solution is provided.

[0051] Please see Figure 2-3 The cofferdam 300 is integrally formed on the second shell 125.

[0052] In this embodiment, the dike 300 is integrally formed on the second housing 125, allowing the dike 300 to be fixed relative to the second housing 125. Furthermore, the integral formation of the dike 300 on the second housing 125 simplifies the assembly process when assembling the safety socket, eliminating the need for separate assembly of the dike 300. The integral structure of the dike 300 and the second housing 125 also more effectively prevents water from contacting the grounding connector, thus more effectively preventing continuity between the live and grounding connectors and avoiding tripping of the power circuit.

[0053] In the structure of this application, it is difficult to seal the ground wire socket separately while sealing the neutral wire socket and the live wire socket. However, by setting up a dike structure, the ground wire and the live wire can be isolated. Even if the ground wire socket is not sealed, the circuit will not trip due to water ingress.

[0054] It should be noted that, based on the aforementioned technical solution of the protective door 200 including a two-pronged socket protective door 210 and a three-pronged socket protective door 220, there is a further technical problem of how to prevent the two-pronged socket protective door 210 and the three-pronged socket protective door 220 from interfering with each other. In order to solve the above problem, the following solution is provided.

[0055] Please see Figure 2-3 A partition plate 500 is provided between the first housing 121 and the second housing 125. The two-prong plug protection door 210 and the three-prong plug protection door 220 are located on both sides of the partition plate 500 and can slide in the length direction of the partition plate 500 to open or close the live wire plug 122 and the neutral wire plug 123.

[0056] In this embodiment, a partition plate 500 is also provided between the first housing 121 and the second housing 125. The two-prong plug protection door 210 and the three-prong plug protection door 220 are located on both sides of the partition plate 500, so that the two-prong plug protection door 210 and the three-prong plug protection door 220 do not affect each other. When pushed by the plug prongs, they can move independently along the length of the partition plate 500 to open or close the live wire plug 122 and the neutral wire plug 123.

[0057] It should be noted that the safety socket prevents conductive liquid from entering through the first housing 121 via the protective door 200. The protective door 200 can be implemented in various ways to prevent conductive liquid from entering the safety socket through the first housing 121. This embodiment does not limit the specific implementation that meets the above requirements; for ease of understanding, this application provides a preferred implementation.

[0058] Please see Figure 4 The first housing 121 has a downwardly extending socket wall 121c, and a live wire socket 122 and a neutral wire socket 123 are formed inside the socket wall 121c. The lower end face of the socket wall 121c is inclined. The protective door 200 has an inclined pushing surface 230. When the plug pins are not inserted into the live wire socket 122 and the neutral wire socket 123, the pushing surface 230 cooperates with the lower end face of the socket wall 121c to close the live wire socket 122 and the neutral wire socket 123.

[0059] In this embodiment, the inclined pushing surface 230 on the protective door 200 and the inclined lower end surface on the socket wall 121c cooperate to enable the protective door 200 to seal the live wire socket 122 and the neutral wire socket 123 when the plug pins are not inserted into the socket, thus preventing conductive liquid from entering the safety socket from the first housing 121.

[0060] To ensure that the protective door 200 can stably seal the live wire socket 122 and the neutral wire socket 123 when the pins are not inserted into them, this application provides a preferred implementation method. Please refer to [link to preferred implementation]. Figure 2 The safety socket includes a drive unit 600, which is used to drive the protective door 200 to reset so that when the plug pins are not inserted into the live wire socket 122 and the neutral wire socket 123, the push surface 230 tightly abuts against the lower end surface of the socket wall 121c.

[0061] In this embodiment, the safety socket includes a drive unit 600, which enables the drive unit 600 to drive the protective door 200 to close the live wire socket 122 and the neutral wire socket 123 when the plug is not inserted into the live wire socket 122 and the neutral wire socket 123.

[0062] It should be noted that the protective door 200 closes the live wire socket 122 and the neutral wire socket 123 through the driving component 600, and the driving component 600 can be implemented in various ways. This embodiment does not limit the specific implementation method that meets the above requirements. For ease of understanding, this application provides two preferred implementation methods.

[0063] Method 1.

[0064] Please see Figure 2 The driving component 600 is a spring 610, which is connected to one end of the protective door 200 and is tilted downward.

[0065] In this embodiment, the driving component 600 is set as a spring 610. The spring 610 is connected to one end of the protective door 200 and is inclined downward. As a result, when the plug is not inserted into the live wire socket 122 and the neutral wire socket 123, the spring 610 can make the pushing surface 230 of the protective door 200 tightly abut against the lower end surface of the socket wall 121c, thereby achieving the technical effect of sealing the live wire socket 122 and the neutral wire socket 123.

[0066] Method 2.

[0067] Optionally, the drive component 600 is a magnet, which includes a first magnet and a second magnet, and the first magnet and the second magnet attract each other; the first magnet is disposed on the protective door 200, and the second magnet is disposed on the first housing 121.

[0068] In this embodiment, the driving component 600 is a magnet, which includes a first magnet and a second magnet. The first magnet and the second magnet attract each other. The first magnet is disposed on the protective door 200, and the second magnet is disposed on the first housing 121. Thus, the mutual attraction between the first magnet and the second magnet can make the pushing surface 230 of the protective door 200 tightly abut against the lower end surface of the socket wall 121c when the plug is not inserted into the live wire socket 122 and the neutral wire socket 123, thereby achieving the technical effect of sealing the live wire socket 122 and the neutral wire socket 123.

[0069] In summary, the safety socket provided in this application embodiment includes: a housing 100, which includes a bottom housing 110 and a front housing unit 120. The front housing unit 120 includes a first housing 121, which is disposed above the bottom housing 110. The first housing 121 is provided with at least one set of two-prong sockets 121a and one set of three-prong sockets 121b. The two-prong socket 121a includes a live wire socket 122 and a neutral wire socket 123, and the three-prong socket 121b includes a live wire socket 122 and a neutral wire socket 123. 3. Grounding socket 124; the grounding socket 124 is located between the live wire socket 122 and the neutral wire socket 123 of the two-pin socket 121a; a protective door 200 is provided below the first housing 121 to close the live wire socket 122 and the neutral wire socket 123 when the pins are not inserted; a dike 300 is provided below the first housing 121, and a grounding separation cavity 310 is formed inside the dike 300; the grounding separation cavity 310 is formed at the grounding socket 124. This solves the problem in the prior art where water ingress into the socket can easily cause the live wire and ground wire to connect, leading to unnecessary tripping of the power circuit.

[0070] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A safety socket comprising: include: The housing includes a bottom shell and a front shell unit. The front shell unit includes a first shell disposed above the bottom shell. The first shell is provided with at least one set of two-pronged sockets and one set of three-pronged sockets. The two-pronged sockets include a live wire socket and a neutral wire socket. The three-pronged sockets include a live wire socket, a neutral wire socket, and a ground wire socket. The ground wire socket is located between the live wire socket and the neutral wire socket of the two-pronged sockets. A protective door is provided below the first housing and is used to close the live wire socket and the neutral wire socket when the plug is not inserted into the live wire socket and the neutral wire socket. A dike is provided below the first housing, and a ground wire separation cavity is formed inside the dike; the ground wire separation cavity is formed at the ground wire insertion hole; the face shell unit includes a second housing, which is disposed below the first housing, and the protective door is located between the first housing and the second housing; a ground wire isolation cavity is formed below the second housing, and a ground wire connector is disposed inside the ground wire isolation cavity; The ground wire isolation cavity is used to isolate the ground wire connector from the live wire connector inside the socket housing, and the dam is formed above the ground wire isolation cavity; the ground wire isolation cavity is connected to the ground wire separation cavity.

2. The safety socket as described in claim 1, characterized in that, The cofferdam extends downward from the first shell and is disposed around the grounding socket.

3. The safety socket as described in claim 1, characterized in that, The cofferdam extends upward from the second shell.

4. The safety socket as described in any one of claims 1-3, characterized in that, The protective door includes a two-pronged insertion protective door and a three-pronged insertion protective door. The two-pronged insertion protective door has a live wire pushing surface and a neutral wire pushing surface. A avoidance part for avoiding the cofferdam is provided between the live wire pushing surface and the neutral wire pushing surface.

5. The safety socket as described in claim 3, characterized in that, The cofferdam is integrally formed on the second shell.

6. The safety socket as described in claim 3, characterized in that, A partition plate is provided between the first housing and the second housing. The two-prong plug protection door and the three-prong plug protection door are located on both sides of the partition plate and can slide along the length of the partition plate to open or close the live wire plug and the neutral wire plug.

7. The safety socket as described in claim 1, characterized in that, The first housing has a downwardly extending socket wall, inside which a live wire socket and a neutral wire socket are formed, and the lower end face of the socket wall is inclined. The protective door has an inclined pushing surface. When the plug pins are not inserted into the live wire socket and the neutral wire socket, the pushing surface cooperates with the lower end surface of the socket wall to seal the live wire socket and the neutral wire socket.

8. The safety socket as described in claim 7, characterized in that, The safety socket includes a drive unit for driving the protective door to reset so that when the plug pins are not inserted into the live wire socket and the neutral wire socket, the pushing surface tightly abuts against the lower end face of the socket wall.

9. The safety socket as described in claim 8, characterized in that, The driving component is a spring, which is connected to one end of the protective door and is inclined downwards.

10. The safety socket as described in claim 8, characterized in that, The driving component is a magnet, which includes a first magnet and a second magnet, and the first magnet and the second magnet attract each other. The first magnet is disposed on the protective door, and the second magnet is disposed on the first housing.