Electric shock proof power socket

Abstract

The application discloses a kind of anti-electric shock power socket, including insulating inner shell, terminal, movable contact, static contact and insulating outer shell, when power is accessed, static contact and movable contact are separated, terminal is not electrified;When switch spring is pushed by plug and makes static contact and movable contact contact, terminal is electrified, even if socket is accessed in power, as long as electric plug is not completely inserted into terminal, since static contact and movable contact are not in contact, terminal will not be electrified, so socket will not be electrified, and the possibility of electric leakage can be reduced, only when plug is completely inserted into terminal, plug will push switch spring to offset and make movable contact displace to the side of static contact, so that movable contact and static contact contact, so as to realize socket line conduction, therefore the safety of socket can be greatly improved;Terminal structure is simple, easy to produce, and production cost is low, while improving the use convenience and use safety of power socket, product production cost is reduced.

Description

Technical Field

[0001] This invention belongs to the field of extension cord power sockets, and specifically relates to a shockproof power socket. Background Technology

[0002] Power strips, also known as extension cords, are common household appliance accessories that play an indispensable role in our lives. However, electrical leakage accidents caused by the use of power strips are not uncommon. Electrical leakage refers to the loss of current through an unexpected path, which can lead to electric shock and fire hazards. In daily use, water ingress and accidental contact are common causes of short circuits and leakage in power strips. Firstly, water is a conductor. When water enters a traditional power strip, it creates a conductive path inside, allowing current to flow along the water, thus causing leakage. Secondly, once water enters the power strip, it cannot drain quickly enough and may remain inside for an extended period, potentially corroding the internal metal components, such as metal contacts and connectors. This can cause their surfaces to become rough and uneven, altering their original electrical properties and preventing current from flowing along the safe path, thus leading to leakage. Furthermore, if electrical appliances are left unplugged and the plug is not fully inserted or unplugged from the socket, the plug's prongs will contact the live wire and neutral wire terminals, creating a circuit that can easily lead to leakage in the socket. If someone accidentally touches the socket in this situation, they may get an electric shock, causing a safety accident.

[0003] As people pay increasing attention to electrical safety, leakage-proof power strips have become a popular choice. Traditional leakage-proof power strips are mainly based on the working mechanism of leakage current devices (RCDs). These devices detect leakage through relay protection. Under normal circumstances, current flows from the live wire to the neutral wire, and there is no current in the ground wire. Therefore, the current in the live and neutral wires is equal. The magnetic fields generated by these two equal currents cancel each other out in the zero-sequence current transformer inside the RCD, so there is no induced current in the secondary winding of the transformer. When leakage occurs, current flows through an inappropriate path (such as a human body or equipment components grounded due to insulation damage). The current in the live and neutral wires is no longer equal, causing an induced current in the secondary winding of the zero-sequence current transformer, triggering the circuit breaker to trip and cut off the power supply. However, these types of leakage-proof power strips have high production costs and high selling prices. Some low-income families still choose ordinary power strips to save money. How to improve the leakage protection performance of ordinary power strips, improve the convenience and safety of plug-in power sockets while reducing product production costs, and make leakage-proof power strips affordable for all families, has become one of the important research and development directions for power strip improvement. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides an electric shock resistant power socket.

[0005] To achieve the above objectives, the invention employs the following technical measures:

[0006] An electric shock resistant power socket includes an insulating inner shell, which has independent live wire mounting cavity and neutral wire mounting cavity, an inner universal socket at the top, and an inner drain hole at the bottom.

[0007] A terminal block is installed in the live wire mounting cavity and the neutral wire mounting cavity, and includes a switch spring that blocks the insertion direction of the internal universal socket;

[0008] The moving contact is mounted on the switch spring.

[0009] A stationary contact is installed in the live wire mounting cavity and the neutral wire mounting cavity, and is positioned opposite to the moving contact.

[0010] An insulating outer shell has an external universal socket at the top and an external drainage hole at the bottom, and an insulating inner shell is detachably installed inside;

[0011] When the power is connected, the stationary contact and the moving contact are separated, and the terminal block is not energized; when the switch spring is pushed by the plug to make the stationary contact and the moving contact come into contact, the terminal block is energized.

[0012] Preferably, the terminal block further includes a plug slot and a conductive frame. The plug slot is disposed on the conductive frame, and the switch spring is connected to the bottom end of the conductive frame. The plug slot is installed between the internal universal socket and the switch spring.

[0013] Preferably, the insertion slot is connected to a tension buffer slot, and the two outer sides of the insertion slot are respectively provided with bearing surfaces, and the body of the switch spring is perpendicular to the groove direction of the insertion slot.

[0014] Preferably, the terminal block is formed by bending a piece of metal conductive sheet.

[0015] Preferably, both the live wire mounting cavity and the neutral wire mounting cavity are provided with terminal mounting support frames, and at least one inner side of the live wire mounting cavity and the neutral wire mounting cavity is provided with a vertically arranged limiting bar and a support column.

[0016] Preferably, the terminal mounting support includes a first support block, a second support block, and a third support block, wherein the height of the first support block is lower than the height of the second support block, and the height of the second support block is lower than the height of the third support block.

[0017] Preferably, the insulating inner shell is further provided with a ground wire mounting cavity, and the opposite side walls of the ground wire mounting cavity are provided with limiting grooves. A first support block and a second support block are provided between the two limiting grooves, and both the first support block and the second support block are provided with positioning posts.

[0018] Preferably, at least two insulating inner shells are installed inside the insulating outer shell, and the terminals of each insulating inner shell are connected in series through conductive terminals.

[0019] Preferably, the insulating shell is provided with a water-proof pad, which is disposed between the inner universal socket and the outer universal socket.

[0020] Preferably, the insulating outer shell is provided with a mounting groove for mounting the insulating inner shell, and the mounting groove is provided with a support bracket.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The present invention discloses an anti-electric shock power socket. Even when the socket is connected to a power source, as long as the appliance plug is not fully inserted into the terminal block, the terminal block will not be energized because the stationary contact and the moving contact are not in contact. Therefore, the socket will not be energized, which can reduce the possibility of leakage. Only when the plug is fully inserted into the terminal block will the plug push the switch spring to shift, causing the moving contact to move to the side of the stationary contact, so that the moving contact and the stationary contact are in contact, thereby realizing the continuity of the socket circuit. Therefore, the safety of the socket can be greatly improved. Moreover, the terminal block structure is simple, easy to manufacture, and has low production cost. While improving the convenience and safety of the power socket, it also reduces the product manufacturing cost.

[0023] 2. Since the plug needs to directly push the switch spring to achieve contact between the moving and stationary contacts, the sensitivity of power-off and power-on is high, which can reduce the possibility of accidental contact and leakage. The wiring terminals are installed in separate live wire and neutral wire installation cavities. Even if water enters the socket, it will enter separate live wire and neutral wire installation cavities. That is, the live wire and neutral wire will not be connected due to water. When water enters, each cavity is independently diverted, and no circuit is formed in the socket, which will lead to leakage and short circuit.

[0024] 3. The live and neutral wires are housed in the insulating inner shell to form an independent power module, which is then installed onto the insulating outer shell. This simplifies installation, improves production efficiency, and the modular assembly method results in a higher installation qualification rate. Furthermore, the insulating inner shell has an internal drainage hole at its bottom, and the insulating outer shell has an external drainage hole at its bottom. When water enters the power socket, it can drain through the external drainage hole, preventing water from soaking the socket and causing leakage or short circuits due to electrical continuity. The insulating outer shell also has a water-resistant pad, which effectively reduces the amount of water entering the live and neutral wire mounting chambers through the internal universal socket, improving the waterproofing and safety of the power socket. Attached Figure Description

[0025] Figure 1 This is a perspective view of an anti-electric shock power socket according to the present invention;

[0026] Figure 2This is an exploded view of an electric shock resistant power socket according to the present invention;

[0027] Figure 3 This is a schematic diagram of the wiring terminals of an anti-electric shock power socket according to the present invention;

[0028] Figure 4 This is a schematic diagram of the wiring terminal structure of an anti-electric shock power socket according to the present invention;

[0029] Figure 5 This is an exploded view of the insulating inner shell of an anti-electric shock power socket according to the present invention.

[0030] Figure 6 This is a schematic diagram of the inner shell cover structure of the insulating inner shell of an anti-electric shock power socket according to the present invention.

[0031] Figure 7 This is a schematic diagram of the inner shell lower cover structure of the insulating inner shell of an anti-electric shock power socket according to the present invention.

[0032] Figure 8 This is a schematic diagram of the installation of the moving contact and stationary contact of an anti-electric shock power socket according to the present invention;

[0033] Figure 9 This is a schematic diagram of the outer cover structure of the insulating shell of an anti-electric shock power socket according to the present invention.

[0034] Figure 10 This is a schematic diagram of the lower cover structure of the insulating shell of an anti-electric shock power socket according to the present invention. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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, they should not be construed as limitations on this invention.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] refer to Figures 1-10 This application claims protection for a shockproof power socket, comprising an insulating inner shell 1, a terminal block 2, a moving contact 3, and a stationary contact 5 cooperating with the moving contact 4, all installed within the insulating inner shell 1. The moving contact 3 is mounted on the terminal block 2, which serves as the live wire and / or neutral wire of the power socket. The insulating inner shell 1 is detachably installed within the insulating outer shell 5. The terminal block 2 is preferably a conductive, elastic yellow phosphor bronze component. The moving contact 3 and the stationary contact 4 are preferably silver contacts. The stationary contact 4 is mounted on a metal conductive frame 41, which is fixedly mounted on the insulating inner shell 1. The metal conductive frame 41 is also preferably made of copper.

[0039] Specifically, the insulating outer shell 5 is connected to a power cord, which is electrically connected to the terminal block 2. When one insulating inner shell 1 is detachably installed inside the insulating outer shell 5, the power socket acts as an extension of the fixed power socket, allowing appliances located far from the fixed power socket to access the power supply. When at least two insulating inner shells 1 are detachably installed inside the insulating outer shell 5, the terminal blocks 2 and metal conductive frames 41 of each insulating inner shell 1 are connected in series via conductive terminals 7, providing power access points for more appliances and meeting more power demands. Specifically, the conductive terminals 7 are provided with multiple pieces. The live wires of each insulating inner shell 1 are connected in series via conductive terminals 7, the neutral wires of each insulating inner shell 1 are connected in series via another conductive terminal 7, and the metal conductive frames 41 of each insulating inner shell 1 are connected in series via yet another conductive terminal 7. The conductive terminals 7 can specifically be copper conductive pieces, used to connect the live, neutral, and ground wires of each insulating inner shell 1 in series. Each live and neutral wire is electrically connected to a main switch.

[0040] In this embodiment, the metal conductive frame 41 includes a stationary contact mounting surface, which is connected to an inverted L-shaped connecting frame. An inverted L-shaped connecting plate is connected to the end of the inverted L-shaped connecting frame. The inverted L-shaped connecting frame is used to snap onto the side wall of the insulating inner shell 1. The inverted L-shaped connecting plate is located outside the insulating inner shell 1, thereby allowing the stationary contact 4 to be stably installed inside the insulating inner shell 1.

[0041] The insulating inner shell 1 has independent live wire mounting cavity 11 and neutral wire mounting cavity 12. It has an internal universal socket 14 at the top and an internal drain hole 13 at the bottom. Two terminals 2 are installed in either of the insulating inner shells 1, serving as the live wire and neutral wire respectively in the live wire mounting cavity 11 and neutral wire mounting cavity 12. Each terminal 2 includes a switch spring 21, which blocks the insertion direction of the internal universal socket 14. A moving contact 3 is mounted on the switch spring 21. Both the live wire mounting cavity 11 and the neutral wire mounting cavity 12 have stationary contacts 4, which are positioned opposite to the moving contact 3. Even if water enters the socket, it will enter the independent live wire mounting cavity 11 and neutral wire mounting cavity 12, preventing the live wire and neutral wire from becoming connected due to water. Water enters the socket independently, preventing the formation of a circuit that could lead to leakage or short circuit. In some embodiments, only one terminal block 2 is installed inside the insulating inner shell 1. The terminal block 2 is installed in the live wire mounting cavity 11 or the neutral wire mounting cavity 12 to serve as a live wire or a neutral wire. Correspondingly, a stationary contact 4 is disposed in the live wire mounting cavity 11 or the neutral wire mounting cavity 12. When power is connected, the stationary contact 4 and the moving contact 3 are separated, and the terminal block 2 is not energized. When the switch spring 21 is pushed by the plug, causing the stationary contact 4 to contact the moving contact 3, the terminal block 2 is energized.

[0042] The insulating inner shell 1 is provided with a three-hole or two-hole universal socket, and the insulating outer shell 5 is provided with a corresponding three-hole universal socket or two-hole external universal socket 51. Therefore, a ground wire can also be installed inside the insulating inner shell 1. A ground wire mounting cavity 18 is also provided inside the insulating inner shell 1. The two opposite side walls of the ground wire mounting cavity 18 are provided with limiting grooves 181. A first support block 182 and a second support block 183 are provided between the two limiting grooves 181. The first support block 182 and the second support block 183 are both provided with positioning posts 184. The ground wire mounting cavity 18 is triangularly distributed with the live wire mounting cavity 11 and the neutral wire mounting cavity 12. The ground wire mounting cavity 18 can adopt a U-shaped groove structure, a square groove structure, a corner groove structure, or other regular groove structure.

[0043] Specifically, the two ends of the ground wire are snapped onto or placed directly on the two limiting grooves 181, the limiting grooves 181 having an L-shaped or C-shaped cross-section. In this embodiment, a first support block 182 and a second support block 183 are located inside the ground wire mounting cavity 18, between the two limiting grooves 181. The tops of the first support block 182 and the second support block 183 are flush with the bottom of the limiting grooves 181. The first support block 182 and the second support block 183 are used to support the ground wire. The positioning post 184 cooperates with the positioning hole on the ground wire to ensure accurate installation and fixation of the ground wire, preventing the ground wire from shifting under force.

[0044] The first support block 182 and the second support block 183 can be a vertical strip structure with a rectangular cross-section or a vertical strip structure with an arc cross-section. When the ground wire is installed, the bottom of the ground wire contacts the top of the first support block 182 and the second support block 183, and the contact point of the ground wire is located between the first support block 182 and the second support block 183.

[0045] The insulating inner shell 1 includes an upper inner shell cover and a lower inner shell cover, which are connected by a snap-fit ​​mechanism. Specifically, the upper inner shell cover has snap-fit ​​grooves on at least two outer side walls, each groove containing a locking block. The lower inner shell cover has insertion blocks on both sides that mate with the snap-fit ​​grooves, each insertion block having a locking groove on its inner side. When the upper and lower inner shell covers are connected, the insertion blocks are aligned with the snap-fit ​​grooves and inserted, with the locking blocks engaging in the grooves. The internal universal insertion holes 14 on the upper inner shell cover are respectively aligned with the live wire mounting cavity 11, the neutral wire mounting cavity 12, and the ground wire mounting cavity 18.

[0046] Both the live wire mounting cavity 11 and the neutral wire mounting cavity 12 are provided with terminal mounting support frames 15. At least one inner side of the live wire mounting cavity 11 and the neutral wire mounting cavity 12 is provided with a vertically arranged limiting stop bar 16 and a support column 17. The terminal 2 is mounted on the support frame 15, and the bearing surface 26 overlaps the support frame 15. Preferably, the bearing surface 26 matches the support surface of the support frame 15, and it is used to vertically install the plug slot 24 in the insulating inner shell 1. In this embodiment, the bearing surface 26 is a horizontal plane. In other embodiments, the bearing surface 26 can also be an inclined plane or a curved surface. The terminal mounting support frame 15 includes a first support block 151, a second support block 152, and a third support block 153. The height of the first support block 151 is lower than the height of the second support block 152, and the height of the second support block 152 is lower than the height of the third support block 153.

[0047] The first support block 151 has a T-shaped structure, the second support block 152 has a cross-shaped structure, and the second support block 152 has a limiting groove in the middle. The top of the third support block 153 is an inclined surface with a groove. The first support block 151, the second support block 152, and the third support block 153 are used to support the live wire or neutral wire, so that the live wire or neutral wire is suspended above the bottom of the live wire mounting cavity 11 and the neutral wire mounting cavity 12, respectively, thus preventing water from soaking the live wire or neutral wire. In addition, in order to further limit the neutral wire or live wire, ensure installation accuracy, and prevent the live wire and neutral wire from shifting, at least two vertically arranged limiting strips 16 are provided on the inner wall of one side of the live wire mounting cavity 11 and the neutral wire mounting cavity 12. There can be two, three, or even more limiting strips 16, and the limiting strips 16 can be vertical strips, T-shaped strips, or cylindrical strips. When the terminal block 2 is installed in the live wire mounting cavity 11 and the neutral wire mounting cavity 12, the limiting stop 16 blocks the side of the terminal block 2, which can effectively prevent the terminal block 2 from shifting.

[0048] Two stationary terminal fixing slots are provided on one side of the lower inner shell cover. The bottom of the stationary terminal fixing slots is higher than the top of the third support block 153. The metal conductive frame 41 is respectively fixed in the stationary terminal fixing slots. The upper inner shell cover is moved to the upper end of the lower inner shell cover. The bottom side of the upper inner shell cover presses on the stationary terminal fixing slots, thereby pressing down the metal conductive frame 41.

[0049] To further enhance the stability of the insulating outer shell 5 and ensure that the insulating inner shell 1 can be well protected, several reinforcing ribs 121 are provided on the inner side wall of the upper cover of the inner shell. The reinforcing ribs 121 are vertically arranged, and the bottom of the reinforcing ribs 552 is provided with a notch that matches the edge of the lower cover of the inner shell. When the upper cover of the inner shell is connected to the lower cover of the inner shell, the notch of the reinforcing ribs 552 is locked on the edge of the lower cover of the inner shell.

[0050] In addition, the bottom of the inner shell cover is provided with a limiting mounting post 19 and a terminal limiting pressure block 10. One side of the terminal limiting pressure block 10 is provided with a limiting block with an inclined bottom surface. There are at least two limiting mounting posts 19, which are respectively set at the edge of the inner shell cover, preferably three or more, to support the inner shell cover around the edges and enhance the strength of the inner shell cover. There are two terminal limiting pressure blocks 10, which are symmetrically arranged to limit and fix the live wire and the neutral wire respectively. The bottom surface of the limiting block is parallel to the switch spring 21.

[0051] The terminal block 2 further includes a tension buffer groove 22, a plug groove 24, a conductive frame 25, and a bearing surface 26. The tension buffer groove 22 and the plug groove 24 are disposed on the conductive frame 25. The plug groove 24 communicates with the tension buffer groove 22. The switch spring 21 is connected to the bottom end of the conductive frame 25. The bearing surface 26 is respectively connected to the two outer sides of the plug groove 24. The plug groove 24 is installed between the internal universal socket 14 and the switch spring 21. The terminal block 2 is installed in the live wire mounting cavity 11 and the neutral wire mounting cavity 12 through the bearing surface 26. The tension buffer groove 22 allows the metal conductive pieces on both sides of the plug groove 24 to have good elastic tension. Therefore, the width of the plug groove 24 can be finely adjusted according to the plug pins. When the plug is inserted into the plug groove 24, the metal conductive pieces on both sides of the plug groove 24 can move outward, increasing the width of the plug groove 24. The metal conductive pieces can elastically press tightly against one side of the plug. When the plug is pulled out of the plug groove 24, the metal conductive pieces on both sides of the plug groove 24 return to their original position under elastic action, making the plug groove 24 more compatible with the plug.

[0052] In detail, to reduce production costs, improve production efficiency, and address the issue of complex structures in traditional terminal blocks, the terminal block 2 described in this application is formed by bending a single metal conductive sheet. The body of the switch spring 21 is perpendicular to the groove direction of the insertion slot 24. The metal conductive sheets on both sides of the upper end of the insertion slot 24 are folded outwards, forming two inclined guide surfaces 23 on the front side of the insertion slot 24. When the terminal block is installed in the insulating inner shell 1, the guide surfaces are located inside the inner universal socket 14 of the insulating inner shell 1, and the insertion slot 24 is aligned with the inner universal socket 14, which facilitates the precise insertion of the plug pins into the insertion slot 24. The conductive frame 25 has an L-shaped structure, and its end face is perpendicular to the body of the switch spring 21. There is a distance difference between the insertion slot 24 and the switch spring 21. The switch spring 21 includes a movable end and a fixed end, with the fixed end connected to the bottom of the conductive frame 21. The angle between the movable end and the fixed end is obtuse. The switch spring 21 can improve the installation stability of the conductive frame 25. The switch spring 21 is located between the insertion slot 24 and the stationary contact 4, and the stationary contact 4 is located at the end of the movement path of the moving contact 3. It is worth noting that in other embodiments, the switch spring 21 can be welded to the bottom of the conductive frame 25.

[0053] The moving contact 3 is installed on the movable end of the switch spring 21. Under the action of force, the movable end of the switch spring 21 can rotate with the fixed end as the fulcrum, thereby driving the moving contact 3 to move. The insertion groove 24 is a through groove. The movable end of the switch spring 21 extends to one side of the insertion groove 24, and the body of the switch spring 21 is perpendicular to the groove direction of the insertion groove 24. The switch spring 21 is located between the insertion groove 24 and the stationary contact 4. The stationary contact 4 is located at the end of the moving path of the moving contact 3. When the plug is inserted into the socket 24, the movable end of the switch spring 21 blocks the upward movement of the socket 24, allowing the plug to contact the movable end of the switch spring 21. This provides a pushing force to the movable end of the switch spring 21, enabling the movable end of the switch spring 21 to move the moving contact 3. When the plug is fully inserted into the socket 24, the moving contact 3 moves to the end of its path and contacts the stationary contact 4. At this time, the circuit in the socket is connected, providing power to the plug. If the plug is not fully inserted into the socket 24, the moving contact 3 does not move to the end of its path, and the stationary contact 4 does not contact the moving contact 3. In this case, the circuit in the socket is disconnected, and the socket remains de-energized.

[0054] The fixed end and the movable end are integrally formed, with the movable end being higher than the fixed end. The movable end includes a sloping pressure plate, with one end of the sloping pressure plate folded downwards and connected to the fixed end. The moving contact 3 is installed at the end of the sloping pressure plate away from the fixed end, and the folding angle of the sloping pressure plate is greater than 120°. The plug pins are inserted and pass through the insertion slot 24, abutting against the upper end of the sloping pressure plate. By applying pressure to the sloping pressure plate, it elastically presses down, causing the moving contact 3 to press down synchronously, ultimately making contact with the stationary contact 4 and connecting the circuit.

[0055] The insulating outer shell 5 includes an upper cover 55 and a lower cover 56. The upper cover 55 is provided with an external universal socket 51, which corresponds one-to-one with the internal universal socket 14 of the insulating inner shell 1. The insulating inner shell 1 communicates with the insulating outer shell 5 through the internal universal socket 14 and the internal drainage hole 13. The bottom of the lower cover 56 is provided with an external drainage hole 42. The insulating inner shell 1 is snapped into the mounting groove 53 of the lower cover 56. The mounting groove 53 is provided with a support bracket 54. The mounting groove 53 is adapted to the insulating inner shell 1. The insulating inner shell 1 is snapped into the mounting groove 53. The support bracket 54 supports the bottom of the insulating inner shell 1, so that the bottom of the insulating inner shell 1 does not contact the bottom of the mounting groove 53, which is conducive to the drainage of water from the insulating inner shell 1 and the insulating outer shell 5.

[0056] The support bracket 54 can be glued, welded, or snapped into the mounting groove 53. The support bracket 54 can adopt a T-shaped structure, H-shaped structure, O-shaped structure, I-shaped structure, cross-shaped structure, R-shaped structure, or E-shaped structure. The top of the support bracket 54 is horizontal. Preferably, the support bracket 54 is integrally formed with the lower cover 56 of the outer shell. It is worth noting that the support bracket 54 preferably adopts a symmetrical structure, which has good structural stability and helps to ensure the stability of the insulating inner shell 1.

[0057] The number of mounting slots 53 is usually the same as the number of insulating inner shells 1. The outer cover 55 is provided with limiting slots that correspond one-to-one with the mounting slots 53, and the slots are adapted to the insulating inner shells 1. When the insulating inner shell 1 is snapped into the mounting slot 53, the outer cover 55 is placed over the upper end of the insulating inner shell 1, and the limiting slots and the mounting slots 53 cooperate vertically to further fix the insulating inner shell 1.

[0058] The insulating outer shell 5 is provided with a water-proof pad 6, which is located between the inner universal socket 14 and the outer universal socket 51. The water-proof pad 3 is preferably an insulating rubber pad, and the water-proof pad 3 is provided with a corresponding universal socket, which can effectively reduce water from entering the power socket body through the universal socket, and improve the waterproofness and safety of the power socket.

[0059] The sum of the areas of the external drainage hole 42 and the internal drainage hole 13 is greater than the total area of ​​the external universal socket 51. Water entering the insulating shell 5 can be discharged from the insulating shell 5 through the external drainage hole 42. Water entering the insulating inner shell 1 can be discharged into the mounting groove 53 inside the insulating shell 5 through the internal drainage hole 13, and then discharged from the insulating shell 5 through the external drainage hole 42. The power socket has good waterproof effect and safe power use effect.

[0060] In addition, the insulating shell 5 is provided with at least two strength-reinforcing columns. The strength-reinforcing columns are hollow inside, and the bottom of the strength-reinforcing columns is provided with heat dissipation holes. The heat dissipation holes are provided with dustproof baffles.

[0061] As a preferred embodiment, the inner side of the upper cover 55 is provided with a limiting buckle 551, and the side of the lower cover 56 is provided with a groove 561 that engages with the limiting buckle 551. The upper cover 55 and the lower cover 56 are detachably connected by the limiting buckle 551 and the groove 561. Furthermore, in some embodiments, to further improve the stability of the connection between the upper cover 55 and the lower cover 56, the upper cover 55 and the lower cover 56 can also be connected by screws.

[0062] The bottom of the lower cover 56 of the outer casing may also be provided with a support pad 57. The support pad 57 can support the lower cover 56 of the outer casing, so that the lower cover 56 of the outer casing can have a height difference with the placement surface when the power socket is placed, which is beneficial to the drainage and heat dissipation of the power socket. The support pad 57 can be integrally formed with the lower cover 56 of the outer casing, or preferably an insulating rubber pad or an insulating sponge pad. The support pad 57 can also be set on the screw holes of the mounting screws, which can seal the screws in the screw holes and reduce the possibility of screw corrosion.

[0063] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the invention and should not be construed as limiting the specific implementation of the invention to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the inventive concept, and all such modifications and substitutions should be considered within the scope of protection of the invention.

Claims

1. A shockproof power socket, characterized in that, include An insulating inner shell (1) has an independent live wire mounting cavity (11) and a neutral wire mounting cavity (12) inside, an internal universal socket (14) at the top, and an internal drain hole (13) at the bottom. A terminal block (2) is installed in the live wire mounting cavity (11) and the neutral wire mounting cavity (12). It includes a switch spring (21), a plug slot (24), and a conductive frame (25). The switch spring (21) blocks the insertion direction of the inner universal socket (14). The plug slot (24) is located on the conductive frame (25). The switch spring (21) is connected to the bottom end of the conductive frame (25). The plug slot (24) is installed between the inner universal socket (14) and the switch spring (21). The body of the switch spring (21) is perpendicular to the groove direction of the plug slot (24). The switch spring (21) includes a movable end and a fixed end. The fixed end is connected to the bottom of the conductive frame (21). The fixed end and the movable end are integrally formed. The movable end is higher than the fixed end. The movable end includes a sloping pressure plate. The end of the sloping pressure plate close to the fixed end is folded down and connected to the fixed end. The moving contact (3) is installed at the end of the sloping pressure plate away from the fixed end. The angle between the movable end and the fixed end is an obtuse angle. The switch spring (21) is located between the insertion slot (24) and the stationary contact (4). The stationary contact (4) is located at the end of the moving path of the moving contact (3). The moving contact (3) is mounted on the switch spring (21); The stationary contact (4) is installed in the live wire mounting cavity (11) and the neutral wire mounting cavity (12), and is arranged opposite to the moving contact (3); An insulating outer shell (5) has an external universal socket (51) on its top and an external drain hole (52) on its bottom. The insulating inner shell (1) is detachably installed inside. When the power is connected, the stationary contact (3) and the moving contact (4) are separated, and the terminal block (2) is not energized; when the switch spring (21) is pushed by the plug to make the stationary contact (3) and the moving contact (4) contact each other, the terminal block (2) is energized.

2. The electric shock resistant power socket according to claim 1, characterized in that, The insertion slot (24) is connected to the tension buffer slot (22), and the two outer sides of the insertion slot (24) are respectively provided with bearing surfaces (26).

3. The electric shock resistant power socket according to claim 2, characterized in that, The terminal block (2) is formed by bending a piece of metal conductive sheet.

4. The electric shock resistant power socket according to claim 1, characterized in that, Both the live wire mounting cavity (11) and the neutral wire mounting cavity (12) are provided with terminal mounting support frames (15), and at least one inner side of the live wire mounting cavity (11) and the neutral wire mounting cavity (12) is provided with vertically arranged limiting bars (16) and support columns (17).

5. A shockproof power socket according to claim 4, characterized in that, The terminal mounting support frame (15) includes a first support block (151), a second support block (152) and a third support block (153). The height of the first support block (151) is lower than the height of the second support block (152), and the height of the second support block (152) is lower than the height of the third support block (153).

6. A shockproof power socket according to claim 1, characterized in that, The insulating inner shell (1) is also provided with a ground wire mounting cavity (18). The two opposite side walls of the ground wire mounting cavity (18) are provided with limiting grooves (181). A first support block (182) and a second support block (183) are provided between the two limiting grooves (181). The first support block (182) and the second support block (183) are both provided with positioning posts (184).

7. A shockproof power socket according to claim 1, characterized in that, At least two insulating inner shells (1) are installed inside the insulating outer shell (5), and the wiring terminals (2) of each insulating inner shell (1) are connected in series through conductive terminals (7).

8. A shockproof power socket according to claim 1, characterized in that, The insulating shell (5) is provided with a water-proof pad (6), which is located between the inner universal socket (14) and the outer universal socket (51).

9. A shockproof power socket according to claim 1, characterized in that, The insulating outer shell (5) is provided with a mounting groove (53) for installing the insulating inner shell (1), and a support bracket (54) is provided in the mounting groove (53).

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