Waterproof power connector components

Abstract

The present invention provides a waterproof power supply connector assembly, which belongs to the field of waterproof power supply technology and includes a power plug and a power socket assembly. The power plug is provided with a power plug insert, and the power socket assembly includes an integrally formed shell and a switch control device, a power conductive sheet moving sheet, a power conductive sheet static sheet and a bottom plate arranged in the shell; the switch control device includes a waterproof rubber sleeve, a U-shaped bracket, a V-shaped support plate, a power plug clip, and a protective plate; the power conductive sheet static sheet, the power conductive sheet moving sheet, the waterproof rubber sleeve, and the U-shaped bracket are respectively fixed to the shell; the power plug clip is fixed to the U-shaped bracket; the V-shaped support plate is movably placed on the U-shaped bracket; the protective plate is placed between the power conductive sheet moving sheet and the support plate on the U-shaped bracket; the design of the present invention, when installed on a power socket and a power strip, will enable the power socket and the power strip to have the functions of preventing water splashing, water dripping, water immersion and accidental touching; there is no need to install a dedicated front-end protection device.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof power supplies, in particular to a waterproof power supply connector assembly. Background Art

[0002] Electrical products are increasingly used in modern life. Many electrical appliances and devices require a power source to function. This connection requires a power outlet assembly, which is composed of one or more connectors. Therefore, safe and reliable connectors are essential for ensuring safe electricity use.

[0003] In daily life, many factors can cause electrical accidents, resulting in serious damage to life and property. Waterproofing is a crucial and effective means of ensuring safe electrical use. Hand contact, moisture, splashing, immersion, rain, and other special circumstances can all contribute to electrical accidents. Current products generally offer the following protection methods for these situations.

[0004] Adding covers to power sockets or power strips, adding touch-proof plug-in boards, installing leakage protectors (RCDs), and waterproof sealing sleeves all present certain drawbacks. For example, sealing materials are prone to aging and damage, waterproof covers offer little protection against rain or water immersion, and RCDs are not waterproof. External sealing sleeves are also not waterproof in deep water. Therefore, while existing technologies may work in general environments, they fail to meet specific requirements and pose serious safety risks. In the past year, a tiered protection approach has emerged: adding a safety device to the front of the socket or power strip. This device utilizes electrical isolation technology to isolate the output power from the ground, preventing leakage current between the human body or equipment and the ground, thereby achieving both electric shock protection and waterproofing. However, this approach has a drawback: the price of the protection device is high, and the number of sockets supported by each protection device is limited. A larger number of sockets requires more protection devices, significantly increasing costs. Connecting the protection device to each power socket and power strip is complex, and installation space is limited. Since the protective device itself is not waterproof, it will be damaged once it is flooded with water, and it will not be able to protect the power socket components and extension strips it carries.

[0005] Publication No. CN111682343A discloses a safety socket module and a plug strip and a mobile cable reel including the safety socket module, comprising: a housing; an upper cover covering the housing, the upper cover being provided with a plurality of sockets; compartments, the number of which corresponds to the number of sockets, each compartment being provided below a corresponding socket in the housing and the interior of which can be accessed from the outside of the housing via the socket; a waterproof electrical connection switch provided in the compartment for asynchronously controlling the closing and opening of a circuit between a power source and an electrical appliance plug; a locking member provided in the compartment and aligned with the socket; the waterproof electrical connection switch comprising a waterproof capsule and a movable contact piece and a static contact piece facing each other provided inside the waterproof capsule. Contact piece; the shell of the device consists of an upper cover and a base, and has poor waterproof performance; the waterproof rubber sleeve is glued to the bottom plate individually, with a complex structure and prone to water leakage; the stroke of the push piece of the switch control device is completed by half the width of the power plug, and the actual stroke is insufficient, so the distance between the moving and static contacts of the conductive piece has to be reduced, resulting in a distance between the moving and static contacts of less than 3 mm, which does not meet the national standard requirements; the push piece of the switch control device is directly against the rubber sleeve, with a short mechanical life, and it will be damaged after a few hundred times, which does not meet the national standard requirement of 5,000 times; there is no locking device, the power plug is easy to loosen, and a water leakage accident occurs; the neutral line has not been processed in any way, and leakage will occur in about 7 days. Summary of the Invention

[0006] In response to the above-mentioned technical deficiencies, the present invention aims to provide a waterproof power connector assembly that, when installed on a power socket or power strip, makes the power socket or power strip resistant to water splashes, water showers, water immersion, and accidental touches; without the need to install a dedicated front-end protection device.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A waterproof power connector assembly comprises a power plug and a power socket assembly, wherein the power plug is provided with a power plug insert, and the power socket assembly comprises an integrally formed shell and a switch control device, a power conductive sheet moving sheet, a power conductive sheet static sheet and a bottom plate arranged in the shell; the switch control device comprises a waterproof rubber sleeve, a U-shaped bracket, a V-shaped support plate, a power plug clip and a protective plate; the power conductive sheet static sheet, the power conductive sheet moving sheet, the waterproof rubber sleeve and the U-shaped bracket are respectively fixed on the shell; the power plug clip is fixed on the U-shaped bracket; the V-shaped support plate is movably placed on the U-shaped bracket; the protective plate is placed between the power conductive sheet moving sheet and the support plate on the U-shaped bracket.

[0009] Preferably, the protective plate, the power plug clip, the V-shaped support plate and the U-shaped bracket are placed in the waterproof rubber sleeve.

[0010] Preferably, the static power conductive sheet and the dynamic power conductive sheet are placed in the waterproof rubber sleeve.

[0011] Preferably, the waterproof rubber sleeve comprises an integrally formed film and rubber sleeve.

[0012] Preferably, the V-shaped support plate is provided with a circular chamfer.

[0013] Preferably, the U-shaped bracket is provided with a rectangular hole for accommodating the V-shaped support plate.

[0014] Preferably, a water-isolating neutral line is provided in the housing.

[0015] Preferably, a water-isolating pad is fixedly provided on the outer shell.

[0016] Preferably, it further comprises a locking device; the locking device comprises a locking plate; the locking plate is fixed on the housing.

[0017] Preferably, it further comprises a locking device; the locking device comprises a first magnet block and a second magnet block; the first magnet block is fixed on the housing, and the second magnet block is fixed on the power plug.

[0018] The beneficial effect of the present invention is that the design of the present invention, when installed on a power socket and a power strip, will make the power socket and the power strip waterproof, waterproof, waterproof and touch-proof; without the need to install a dedicated front-end protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of the connection state of the waterproof power connector assembly provided in Example 2 of the present invention;

[0021] Figure 2 A schematic structural diagram of the waterproof power connector assembly in disconnected state provided by Example 2 of the present invention;

[0022] Figure 3 A schematic top view of a cross-sectional structure of a three-phase four-hole waterproof power connector assembly provided in Example 2 of the present invention;

[0023] Figure 4 A schematic structural diagram of a locking device of a waterproof power connector assembly provided by an embodiment of the present invention in a locked state;

[0024] Figure 5A schematic structural diagram of a three-phase four-wire, three-phase four-hole connector housing of a waterproof power connector provided by an embodiment of the present invention;

[0025] Figure 6 A schematic structural diagram of a one-way two-hole connector housing of a waterproof power connector provided by an embodiment of the present invention;

[0026] Figure 7 A side view of a three-phase four-hole plug assembly of the waterproof power plug assembly provided in Example 1 of the present invention;

[0027] Figure 8 A diagram showing the interior of a three-phase four-wire housing of a waterproof power connector assembly provided by an embodiment of the present invention;

[0028] Figure 9 A schematic structural diagram of the locking device of the waterproof power connector assembly provided by an embodiment of the present invention in an unlocked state;

[0029] Figure 10 A three-phase four-wire circuit diagram of a waterproof power connector assembly provided by an embodiment of the present invention;

[0030] Figure 11 The three-phase four-wire power principle of the waterproof power connector assembly provided by the embodiment of the present invention;

[0031] Figure 12 A diagram showing the internal structure of a single-phase three-hole housing of a waterproof power connector assembly provided by an embodiment of the present invention;

[0032] Figure 13 A three-dimensional structural diagram of a single-phase three-hole housing of a waterproof power connector assembly provided in an embodiment of the present invention;

[0033] Figure 14 A schematic diagram of the power plug of the waterproof power connector assembly provided in Example 1 of the present invention is shown in FIG.

[0034] Figure 15 A single-phase two-hole circuit diagram of a waterproof power connector assembly provided by an embodiment of the present invention;

[0035] Figure 16 A schematic diagram of a single-phase two-hole circuit of a waterproof power connector assembly provided by an embodiment of the present invention;

[0036] Figure 17 A three-dimensional diagram of a single-phase two-hole housing of a waterproof power connector assembly provided in an embodiment of the present invention;

[0037] Figure 18 A top view of a single-phase, two-hole waterproof power connector assembly provided in Example 1 of the present invention;

[0038] Figure 19A top view of a single-phase three-hole waterproof power connector assembly provided in Example 1 of the present invention;

[0039] Figure 20 This is a schematic structural diagram of the waterproof power connector assembly provided in Example 1 of the present invention in a state where the power plug is not inserted;

[0040] Figure 21 A single-phase three-hole circuit diagram of a waterproof power connector assembly provided by an embodiment of the present invention;

[0041] Figure 22 A schematic diagram of the single-phase three-hole electrical principle of the waterproof power connector assembly provided by an embodiment of the present invention;

[0042] Figure 23 A schematic diagram of the structure of a single-phase, two-hole waterproof power connector assembly provided in Example 2 of the present invention, viewed from above;

[0043] Figure 24 This is a schematic diagram of the structure of a single-phase 3-hole waterproof power connector assembly provided in Example 2 of the present invention from a top view.

[0044] Description of reference numerals:

[0045] Shell 1, power plug clip 2, locking piece 3, power plug 4, waterproof pad 5, power plug insert 6, waterproof rubber sleeve 7, power conductive sheet static piece 8, power conductive sheet dynamic piece 9, protective piece 10, bottom plate 11, V-shaped support plate 12, U-shaped bracket 13, first magnet block 14, second magnet block 15. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] It should be noted that, in the description of the present invention, terms such as "center", "upper", "lower", "horizontal", and "inner" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0048] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0049] Example 1

[0050] Enclosed switch contact control device solution achieves waterproof purpose

[0051] A waterproof power connector assembly includes an integrally formed shell 1 and a switch control device placed in the shell 1, as well as a power conductive sheet movable plate 9, a power conductive sheet static plate 8, and a base plate. The switch control device includes a waterproof rubber sleeve 7, a U-shaped bracket 13, a V-shaped support plate 12, a power plug clip 2, and a protective plate 10; the power conductive sheet static plate 8, the power conductive sheet movable plate 9, the waterproof rubber sleeve 7, and the U-shaped bracket 13 are respectively fixed on the base plate, and the base plate is fixed on the shell 1; the power plug clip 2 is fixed on the U-shaped bracket 13; the V-shaped support plate 12 is movably placed on the U-shaped bracket 13; the protective plate 10 is placed between the power conductive sheet movable plate 9 and the support plate on the U-shaped bracket 13; the protective plate 10, the power plug clip 2, the V-shaped support plate 12, and the U-shaped bracket 13 are placed in the waterproof rubber sleeve 7.

[0052] Furthermore, the waterproof rubber sleeve 7 includes an integrally formed film and rubber sleeve.

[0053] Furthermore, the V-shaped support plate 12 is provided with a circular chamfer.

[0054] Furthermore, a rectangular hole for accommodating the V-shaped support plate 12 is provided on the U-shaped bracket 13 .

[0055] Furthermore, a water-isolating neutral line is provided in the housing 1 .

[0056] Furthermore, a water-isolating pad 5 is fixedly provided on the housing 1 .

[0057] Furthermore, it also includes a locking device; the locking device includes a locking piece 3; the locking piece 3 is fixed on the housing 1.

[0058] Furthermore, a locking device is included; the locking device includes a first magnet block 14 and a second magnet block 15; the first magnet block 14 is fixed to the housing 1, and the second magnet block 15 is fixed to the power plug. Single-phase 2-hole power plug assembly.

[0059] The outer shell 1 of the single-phase 2-hole power plug assembly Figure 6, is made of plastic. The top of the housing 1 is provided with a socket corresponding to the position and size of the standard power plug blade 6. There is a slightly raised frame around the socket, so that the socket is lower than the frame, which is convenient for installing the waterproof pad 5. There are four half openings on the lower side of the housing 1 for electrical connection between various components. The single-phase two-hole plug assembly housing 1 has two square frames inside to fix and seal the waterproof rubber sleeve 7. Figure 17. The centers of the two square frames are aligned with the sockets of the power plug blade 6 above, ensuring that the blade is accurately inserted into the power plug clip 2. There is a step on the inner wall of the shell 1 to support the base plate 11. A switch contact plate control device is placed in each waterproof rubber sleeve 7, and the external power plug can be inserted into the switch contact plate control device. The switch contact plate of the connector assembly is installed on the base plate 11, and the power conductive plate movable plate 9 and the power conductive plate static plate 8 fixed on the base plate are controlled by the switch contact plate control device to complete the connection and disconnection between the power supply and the electrical appliance plug. There are two rectangular frames in the shell 1 for fixing and sealing the waterproof rubber sleeve 7. A switch contact control device is placed in each waterproof rubber sleeve 7. The switch contact control device is composed of a power plug clip 2, a U-shaped bracket 13, a V-shaped support plate 12, a protective plate 10, and a connecting screw. Eight power conductive plates are located outside the waterproof rubber sleeve 7, each with a contact. The four plates resting on the sleeve are the moving plates, while the four plates further away are the stationary plates. These eight plates form four sets of switch contacts, each separated by a fixed distance. The switch contact control device within the waterproof rubber sleeve 7 is screwed to the base plate 11, along with the waterproof rubber sleeve 7. The four pairs of power conductive plates are injection-molded onto the base plate 11. The base plate 11 rests on a step in the sidewall of the housing 1. The U-shaped bracket 13 in the rubber sleeve is a U-shaped frame structure with an open upper end. The U-shaped bracket 13 is arranged on the bottom plate 11, and the two V-shaped support plates 12 are respectively hinged on the vertical support frame; the two guard plates 10 are respectively arranged on the opposite outer sides of the two movable V-shaped support plates 12, and their bottoms are fixed on the bottom plate 11; the power plug clip 2 is arranged at the center of the U-shaped bracket 13 for the external power plug blade 6 to be inserted and placed; there are two groups of conductive components, which are respectively arranged on the opposite outer sides of the two guard plates 10 and are respectively arranged close to the two guard plates 10; the conductive components include a power conductive sheet moving sheet 9 and a power conductive sheet static sheet 8, which are respectively arranged vertically on the bottom plate 11 in sequence, and the power conductive sheet moving sheet 9 and the power conductive sheet static sheet 8 are respectively arranged vertically on the bottom plate 11, and the power conductive sheet moving sheet 9 and the power conductive sheet static sheet In their natural state, a certain gap is left between the plates 8. The power conductive plate rotor 9 is positioned near the U-shaped bracket 13, while the power conductive plate static plate 8 is positioned away from the U-shaped bracket 13. The waterproof rubber sleeve 7 covers the outside of the switch control device. When the external power plug 6 is inserted into the power plug clamp 2 at the center of the U-shaped bracket 13, the movable V-shaped support plates 12 on both sides rotate, which in turn pushes the protective plates 10 on both sides, one side of the waterproof rubber sleeve 7, and the power conductive plate rotor 9 to deflect together, so that the power conductive plate rotor 9 and the power conductive plate static plate 8 come into contact, achieving power-on control. When the appliance plug is removed, the protective plates 10, one side of the waterproof rubber sleeve 7, and the power conductive plate rotor 9 return to their original state, so that the power conductive plate rotor 9 and the power conductive plate static plate 8 do not come into contact, achieving power-off control. All power input lines are connected to the power conductive plate at the bottom of the base plate 11 and sealed with waterproof insulating material.

[0060] The electrical principle diagram and circuit diagram of the single-phase 2-hole power plug assembly are shown in Figure 15 and Figure 16 As can be seen from the electrical principle diagram, the live and neutral wires of the power supply are controlled by two switches respectively. K1 and K3 are used to control the on and off of the live wire, and K2 and K4 are used to control the on and off of the neutral wire. Only when all four switches are turned on can the output end of the power connector assembly be powered normally. It can also be seen from the figure that K1 and K4 are linked together, and K2 and K3 are linked together. One of the two blades of the power plug pushes K1 and K4, and the other pushes K2 and K3. Only when both blades of the power plug are inserted into the clip are the live and neutral wires of the power supply connected. When only one blade is inserted, only K1 and K4 can be connected, or only K2 and K3 can be connected, and the power is still in the off control state. It is precisely by utilizing the method of cross-connecting switches and the output power plug clip 2 that accidents of electric shock caused by accidental touch are prevented, further improving the anti-electric shock performance of the power socket or power strip.

[0061] A top view of a single-phase 2-hole power connector Figure 18It can be seen that K1 and K4 are placed in one bin, and K2 and K3 are placed in another bin. A switch contact control device is placed in each of the two bins to drive the conductive plate movable plate 9 of each switch power supply. The two switch contact control devices are sealed and isolated between the bins by a waterproof rubber sleeve 7, and the two bins are isolated by the shell 1. Therefore, the two bins are always water-proof, achieving the purpose of waterproofing the four conductive connection switches. From the side view of the power connector assembly, it can be seen that the switch contact control device is sealed by a waterproof rubber sleeve 7 and a waterproof pad 5, and is also completely isolated from the two bins. Therefore, whether there is water or water in the rubber sleeve, it will not affect the switch in the bin. A switch contact control device is placed in each of the two waterproof rubber sleeves 7, and the power supply is connected and disconnected by inserting and removing the power plug 6. When the power plug is inserted into the socket of the power connector and tightened, the clamping force of the power plug clip 2 and the pressure of the locking device tightly bind the power plug to the slightly protruding waterproof pad 5 on the end face of the connector housing 1, almost forming a single piece. Only a tiny gap forms on the contact surface, preventing water from entering the waterproof rubber sleeve 7 through the gap in water, thus achieving a waterproof effect. When immersed in seawater, due to the high permeability and conductivity of seawater, a trace amount of water will seep into the gap and generate a certain current (equivalent to the load current) between the neutral and live wires of the power plug. Because the gap is very small, the generated current is also very small, less than 10 milliamperes, and the power consumption is no more than 3 watts. The leakage current generated by the live wire in water is also very small. When the power connector is operating normally in seawater, the leakage current generated is far less than the safe leakage current specified in the safety standards. The leakage current generated in fresh water is even smaller, making it safe for use. As can be seen from the side view, the power plug blade 6 first contacts the power plug clamp 2 and then moves downward to spread the two V-shaped support plates 12, connecting the power conductive plate rotor 9 and the power conductive plate static plate 8. If a plug larger than the standard size is inserted into the connector assembly, the opening in the housing 1 will be too narrow to allow it to fit. If a power plug blade 6 smaller than the standard size is inserted, the V-shaped support plates 12 will not be able to push the power conductive plate rotor 9 enough, and the power conductive plate rotor 9 and the power conductive plate static plate 8 will not connect, and the power will be turned off.

[0062] Single-phase 3-hole power connector

[0063] The housing 1 of the single-phase, three-pin power connector assembly is constructed of a single piece of plastic. The top of the housing 1 features a socket that matches the position and size of the power conductive strip on a standard power plug. A slightly raised frame surrounds the socket, keeping it lower than the frame to facilitate the installation of a water-insulating pad 5.

[0064] There are six half openings on the bottom of the housing 1 for electrical connection between the various connectors. The single-phase 3-hole connector housing 1 has three square frames inside for fixing and sealing the waterproof rubber sleeve 7. Figure 13. The centers of the three boxes are aligned with the sockets of the power plug blade 6 above, ensuring that the power plug blade 6 is accurately inserted into the power plug clip 2. There is a step on the inner wall of the shell 1 to support the bottom plate 11. A switch contact piece control device is placed in each waterproof rubber sleeve 7, and the external power plug can be inserted into the control device. The switch contact piece of the connector assembly is installed on the bottom plate 11, and the connection and disconnection between the power supply and the electrical appliance plug are completed through the switch contact piece control device. The waterproof implementation scheme of the single-phase 3-hole power connector assembly is basically the same as that of the single-phase 2-hole power connector assembly, the difference is that there is an additional ground wire jack. The input and output of the ground wire are straight-through and output directly from the ground wire power plug clip 2. The live wire and neutral wire are controlled by the switch contact piece control device. From the top view of the single-phase 3-hole power connector assembly, it can be seen that there are three compartments in the shell 1, one for the live wire, one for the neutral wire and one for the ground wire, and each compartment contains a group of switch power conductive pieces, a power conductive piece moving piece 9 and a power conductive piece static piece 8. A switch contact control device is also placed. The switch contact control device controls the dynamic and static plates in the same way as the single-phase 2-hole control method. Its switch control sequence is as follows:

[0065] Schematic diagram of the electrical principle of a single-phase 3-hole power connector Figure 22 and circuit Figure 21 As can be seen, the live wire of the power supply is controlled by two switches, K2 and K3, while the neutral wire is controlled by one switch, K1. The output of the power connector assembly can only function properly when all three switches are turned on. K1 is controlled by a control device within the ground connector compartment, K3 by a control device within the live connector compartment, and K2 by a control device within the neutral connector compartment. Plugging in any power plug individually only turns on one of the switches, leaving the output of the connector assembly without power. Power is only connected when all three conductive blades of the power plug are inserted to the required depth.

[0066] A top view of a single-phase 3-hole power connector Figure 19 It can also be seen that the live, neutral, and ground wire compartments are all independently isolated from each other. A waterproof pad 5 is placed between the power plug and the connector housing 1. When the power plug is inserted into the power connector and tightened, the live, neutral, and ground wires are isolated from each other, achieving waterproofing. Because the live and neutral wires are controlled by control devices on different sides, protection against electric shock is also improved.

[0067] Three-phase 4-hole (three-phase four-wire) power connector

[0068] The housing 1 of the three-phase, four-hole power connector assembly has four sockets on its upper end, corresponding to the power plug blades 6. Inside the housing 1 are four rectangular frames that hold waterproof rubber sleeves 7, each housing a power contact control device. The four power contact control devices are housed in the three phase conductor compartments (La, Lb, Lc) and one neutral conductor compartment (N). There are 12 power conductive plates: six rotor plates 9 and six static plates 8. Each rotor plate 9 and each static plate 8 constitute a switch, for a total of six switches. One switch is placed in each of the phase conductor compartments a and c, and two switches are placed in each of the phase conductor compartments b and neutral conductor compartment N. It can be seen that K1 and K2 are placed in the neutral conductor compartment (N) and are controlled by the switch control device in that compartment. K3 is placed in the phase conductor compartment (C) and is controlled by the switch control device in that compartment. K4 and K5 are placed in the phase conductor compartment (B) and are controlled by the switch control device in that compartment. Each phase line is thus connected or disconnected by two switches. However, the two switches controlling each phase line are not controlled by the same switch control device. This means that when only one power plug blade 6 is inserted, the connector assembly is de-energized. It is only energized when all blades are inserted and securely fastened. The neutral wire N on the connector assembly is not controlled by a switch, and the input and output terminals are directly connected. It can be used as either a neutral wire or a protective neutral wire, depending on actual usage requirements.

[0069] Circuit diagram of three-phase 4-hole power socket assembly Figure 11 and circuit Figure 10 ; As can be seen from the circuit diagram, phase a of the three-phase power supply is controlled by K1 and K6; phase b is controlled by K2 and K5; phase c is controlled by K3 and K4, and the neutral line N is not controlled by the switch, and the input and output ends are directly connected. K1 and K2 are linked and controlled by the control device of the neutral line bin body; K4 and K5 are linked and controlled by the control device of the phase line b bin body; K3 is controlled by the control device of the phase line c bin body; K6 is controlled by the control device of the phase line a bin body. Therefore, only when the three-phase four-wire power plug blades 6 are all inserted into the power plug clip 2 of the connector assembly and plugged in tightly, the power supply is in the power-on state and power-on control is realized. Similarly, when no power conductive blade is inserted or only one power conductive blade is inserted, the power cannot be connected to prevent electric shock.

[0070] From a top view of the three-phase, four-hole connector assembly, six groups of power conductive plate assemblies, totaling 12 power conductive plates, are placed within the four compartments. Each group consists of a movable power conductive plate 9 and a static power conductive plate 8. Each of the four compartments also houses a switch contact plate control device. The center of the power plug clip 2 in the control device is aligned with the center of the corresponding corresponding socket, facilitating the insertion and removal of the power plug 6. The switch contact plate control devices in the neutral line N compartment and the phase line b compartment are equipped with dual V-shaped support plates 12 to control two groups of power conductive plate assemblies. The switch contact plate control devices in the phase line a compartment and the phase line c compartment are equipped with a single V-shaped support plate 12 to control one group of switch contact plate assemblies. When the power plug is not inserted into the power plug clip 2, the V-shaped support plate 12 is not extended, and the movable power conductive plates 9 and the static power conductive plates 8 in all waterproof rubber sleeves 7 are not in contact, and the device is in a power-off state. When the power plug's power plug blade 6 is inserted into the power plug clamp 2, the V-shaped support plate 12 is stretched outward, causing all the movable plates to deflect. The contact points of the power conductive plate 9 and the static plate 8 come into contact, connecting the power supply. Due to the waterproof rubber sleeve 7 and waterproof gasket 5, all the power conductive plates and the switch contact control device are isolated from each other, achieving waterproofing.

[0071] Example 2

[0072] The solution of enclosing the power conductive sheet achieves waterproof purpose

[0073] A waterproof power connector assembly includes a power plug 4 and a power socket assembly. The power plug 4 is provided with a power plug blade 6. The power socket assembly includes an integrally formed shell 1 and a switch control device placed in the shell 1. The switch control device includes a U-shaped bracket 13, a V-shaped support plate 12, a power plug clip 2, and a protective plate 10; the power conductive sheet static plate 8, the power conductive sheet movable plate 9, the waterproof rubber sleeve 7, and the U-shaped bracket 13 are respectively fixed on the bottom plate 11, and the bottom plate 11 is fixed on the shell 1; the power plug clip 2 is fixed on the U-shaped bracket 13; the V-shaped support plate 12 is movably placed on the U-shaped bracket 13; the protective plate 10 is placed between the power conductive sheet movable plate 9 and the support plate 12 on the U-shaped bracket 13; the power conductive sheet static plate 8 and the power conductive sheet movable plate 9 are placed in the waterproof rubber sleeve 7.

[0074] Furthermore, the waterproof rubber sleeve 7 includes an integrally formed film and rubber sleeve.

[0075] Furthermore, the V-shaped support plate 12 is provided with a circular chamfer.

[0076] Furthermore, a rectangular hole for accommodating the V-shaped support plate 12 is provided on the U-shaped bracket 13 .

[0077] Furthermore, a water-isolating neutral line is provided in the housing 1 .

[0078] Furthermore, a water-isolating pad 5 is fixedly provided on the housing 1 .

[0079] Furthermore, it also includes a locking device; the locking device includes a locking piece 3; the locking piece 3 is fixed on the housing 1.

[0080] Furthermore, it also includes a locking device; the locking device includes a first magnet block 14 and a second magnet block 15; the first magnet block 14 is fixed to the housing 1, and the second magnet block 15 is fixed to the power plug 4.

[0081] Single-phase 2-hole power connector

[0082] Different from the first solution, this solution does not enclose the power conductive plate control device, but encloses all the power conductive plates to achieve the purpose of waterproofing. The specific structure and principle are as follows.

[0083] The housing 1 of the single-phase, two-pin power connector assembly is constructed from a single piece of plastic. The top of the housing 1 features a socket that corresponds in position and size to the conductive tab of a standard power plug 4. A slightly raised frame surrounds the socket, positioning it below the frame to facilitate installation of a water-repellent gasket 5. Four semi-openings are located on the underside of the housing 1 for electrical connections between the various components.

[0084] Two compartments are provided inside the housing 1 and are isolated from each other. Two sets of power conductive plates and a switch contact control device are placed in each compartment. All power conductive plates are fixed to the base plate 11 by injection molding. The switch contact control device is fixed to the base plate 11 with screws. Four vertical sleeves stand upright on an integral waterproof rubber sleeve 7, which enclose the four sets of power conductive plates. The four sets of power conductive plates are then placed inside the housing 1. After the housing 1 and the base plate 11 are pressed together, each set of power conductive plates is sealed, isolating the groups of power conductive plates from each other. The switch contact control device is composed of a U-shaped bracket 13, a power plug clip 2, a V-shaped support plate 12, and a protective plate 10, and is fixed to the base plate 11 with screws. The centers of the two power plug clips 2 are aligned with the opening position of the housing 1 to facilitate the insertion of the power plug blade 6. The power conductive sheet includes a power conductive sheet rotor 9 and a power conductive sheet static sheet 8. The power conductive sheet rotor 9 and the power conductive sheet static sheet 8 are respectively and vertically arranged on the base plate 11 in sequence. A certain gap is left between the power conductive sheet rotor 9 and the power conductive sheet static sheet 8 in the natural state. The power conductive sheet rotor 9 is arranged close to the U-shaped bracket 13, and the power conductive sheet static sheet 8 is arranged away from the U-shaped bracket 13. The waterproof rubber sleeve 7 covers the outside of the power conductive sheet rotor 9 and the power conductive sheet static sheet 8; when the power plug blade 6 is not inserted into the power plug clip 2, the two V-shaped support plates 12 of the switch contact control device are flat on the protective plate 10 close to the waterproof rubber sleeve 7, and the other side of the V-shaped support plate 12 is suspended. The power conductive sheet rotor 9 and the power conductive sheet static sheet 8 are not in contact, and the output end has no power. When the conductive plate of the power plug 4 is inserted into the power plug clamp 2, the V-shaped support plates 12 on both sides are stretched open by the power plug insert 6, pushing the protective plate 10, one side of the waterproof rubber sleeve 7, and the power conductive plate movable plate 9 to shift in sequence, so that the power conductive plate movable plate 9 and the power conductive plate static plate 8 come into contact, achieving power control. When the power plug 4 is unplugged, the protective plate 10, one side of the waterproof rubber sleeve 7, and the power conductive plate movable plate 9 return to their original state, and the power is cut off again. In this solution, all power conductive plates are sealed, and each group of power conductive plates is isolated from each other; the control device for controlling the live wire and the control device for controlling the neutral wire are also placed in their own compartments and isolated by the shell 1, so even if water enters the shell 1, it will not have any effect. When the power plug 4 is inserted into the power connector and tightened, the water barrier 5 between the power plug 4 and the power connector minimizes the gap between them, virtually eliminating any water in the gap. This results in a relatively high insulation resistance between the conductive plates of the power plug 4, and a very low current (equivalent to the load current) generated between the live and neutral wires, exceeding 3 watts. The leakage current generated by the live wire into the water is also very low, far below the permitted leakage current specified by national standards. This ensures compatibility with both fresh and seawater.

[0085] The working principle diagram and circuit diagram of the single-phase 2-hole power connector assembly and the electrical principle diagram and circuit diagram of the power connector assembly of the first scheme Figure 1Same as improving the anti-electric shock performance and waterproof performance.

[0086] A top view of a single-phase 2-hole power connector Figure 24 As can be seen, K1 and K4 are housed in one compartment, while K2 and K3 are housed in another. Each compartment houses a switch contact control device, which actuates the movable plate of each switch's conductive plate. The four sets of conductive plate contacts are sealed within the two compartments by a waterproof rubber sleeve 7, which is isolated from the housing 1. Therefore, the two compartments are completely impermeable to water, achieving the waterproof purpose of the four conductive connection switches. A side view of the power connector assembly shows that the power conductive plates are sealed by the waterproof rubber sleeve 7 and completely isolated from the two compartments. The power supply is connected and disconnected by inserting and removing the power plug blade 6. When the power plug 4 is inserted into the power connector assembly and tightened, the clamping force of the power plug clip 2 and the pressure of the locking device tightly bind the power plug 4 to the slightly protruding waterproof pad 5 on the end face of the connector assembly housing 1, almost forming a single unit. Only a tiny gap forms at the contact surface, preventing water from entering the waterproof rubber sleeve 7 through the gap, thus achieving a waterproof effect.

[0087] Single-phase 3-hole power connector

[0088] The outer shell 1 of the single-phase, three-pin power connector assembly is constructed from a single piece of plastic. The top of the housing 1 features a socket corresponding in size and position to the conductive blades of a standard power plug 4. A slightly raised frame surrounds the socket, positioning it below the frame to facilitate installation of a waterproof gasket 5. Six semi-openings are located on the underside of the housing 1, providing electrical connections between the various components. The single-phase, three-pin connector assembly housing 1 contains three compartments. Each compartment houses a power conductive blade assembly and a switch contact plate control device. The center of the switch contact plate control device is aligned with the conductive blade receptacle of the power plug 4 above, ensuring accurate insertion of the blades into the power plug clip 2. A step is located on the inner wall of the housing 1 to support the base plate 11. A waterproof rubber sleeve 7 is located within the housing 1. The integrated sleeve has three upright compartments, each housing a power conductive blade assembly. The power conductive blade assembly is mounted on the base plate 11 and shielded by the three upright compartments, shielding it from the outside world. The switch contact plate control device connects and disconnects the power supply to the appliance plug. The housing 1 contains three rectangular compartments, each housing a switch contact control device and a set of power conductive plate assemblies. The switch contact control device consists of a power plug clip 2, a U-shaped bracket 13, a V-shaped support plate 12, a protective plate 10, and connecting screws. Inside each of the three rubber sleeves are two power conductive plates: a movable plate 9 and a static plate 8. These six power conductive plates form three groups of switch contacts, each with a certain distance between them. The switch contact control device outside the rubber sleeve is fixed to the base plate 11 with screws, and the three groups of power conductive plates are fixed to the base plate 11 by injection molding. The base plate 11 is placed on the side wall step inside the housing 1.The U-shaped bracket 13 is a U-shaped frame structure with an open upper end. The U-shaped bracket 13 is arranged on the base plate 11, and the movable V-shaped support plate 12 is hinged on the vertical support frame on the U-shaped bracket 13; the protective plate 10 is arranged on the relatively outer side of the movable V-shaped support plate 12, and its bottom is fixed on the base plate 11; the power plug clip 2 is arranged at the center position of the U-shaped bracket 13 for the external power plug blade 6 to be inserted and placed; there are 3 groups of conductive components, which are respectively arranged inside the waterproof rubber sleeve 7, and the relatively outer sides of the protective plate 10 are respectively arranged close to the waterproof rubber sleeve 7; the conductive components include a power conductive sheet moving sheet 9, a power conductive sheet static sheet 8 and a waterproof rubber sleeve 7, the power conductive sheet moving sheet 9 and the power conductive sheet static sheet 8 are respectively arranged vertically on the base plate 11 in sequence, and the power conductive sheet moving sheet 9 and the power conductive sheet static sheet 8 are in In their natural state, a certain gap remains between them. The power conductive plate rotor 9 is positioned near the U-shaped bracket 13, while the power conductive plate static plate 8 is positioned away from the U-shaped bracket 13. The waterproof rubber sleeve 7 covers the outer sides of the power conductive plate rotor 9 and the power conductive plate static plate 8. When the external power plug 6 is inserted into the power plug clamp 2 at the center of the U-shaped bracket 13, the movable V-shaped support plate 12 rotates, which in turn pushes the protective plate 10, one side of the waterproof rubber sleeve 7, and the power conductive plate rotor 9 to deflect, thereby bringing the power conductive plate rotor 9 and the power conductive plate static plate 8 into contact, achieving power-on control. When the appliance plug 6 is removed, the protective plate 10, one side of the waterproof rubber sleeve 7, and the power conductive plate rotor 9 return to their original state, thereby removing the power conductive plate rotor 9 and the power conductive plate static plate 8 from contact, achieving power-off control. All power input lines are connected to the power conductive plate at the bottom of the base plate 11 and sealed with waterproof insulating material.

[0089] As shown in the electrical schematic and circuit diagram of the single-phase, three-outlet power connector assembly, the live wire is controlled by two switches, while the neutral wire is controlled by one switch. K2 and K3 are used to control the live wire's on / off state, while K1 controls the neutral wire's on / off state. Only when all three switches are turned on will the output of the power connector assembly be properly powered. The figure also shows that the three prongs of the power plug 4 each push a switch, and only when all three prongs are inserted into the clips are the live and neutral wires connected. When only one or both prongs are inserted, only one or two switches are turned on, and the power remains off. This cross-connection of the switches and the output power plug clip 2 prevents accidental electric shock, further improving the anti-electrical performance of the power socket or power strip.

[0090] A top view of a single-phase 3-hole power connector Figure 19Look, each of the three compartments contains a switch contact control device and a group of power conductive plates. The two groups of switch contacts in the live wire compartment and the neutral wire compartment are used to connect and disconnect the live wire, and the group of switches in the ground wire compartment is used to connect and disconnect the neutral wire. The three groups of conductive plate contacts are sealed in the three compartments by a waterproof rubber sleeve 7, and the three compartments are isolated by the shell 1, so whether there is water in the compartment or not will not affect the switch conductive plates. The purpose of waterproofing the three conductive connection switches is achieved. It can be seen from the side view of the power connector assembly that the power conductive plate is sealed by a waterproof rubber sleeve 7 and is also completely isolated from the three compartments. The connection and disconnection of the power supply is controlled by inserting and removing the power plug 6. When the power plug 4 is inserted into the socket of the power connector and tightened, the clamping force of the power plug clip 2 and the pressure of the locking device make the power plug 4 tightly combined with the slightly protruding waterproof pad 5 on the end face of the connector housing 1, almost integrated into one, and only a tiny gap can be formed on the contact surface. Water cannot enter the waterproof rubber sleeve 7 through the gap, thereby playing a waterproof role.

[0091] Three-phase 4-hole power socket assembly

[0092] The housing 1 of the three-phase, four-hole power connector assembly has four sockets on its upper end, corresponding to the power plug blades 6. Inside, the housing 1 contains four compartments, with four power contact control devices placed in the three phase compartments (La, Lb, and Lc) and one neutral compartment. The power switch comprises 12 power contactors: six rotors 9 and six static plates 8. Each rotor 9 and each static plate 8 constitutes a switch, for a total of six switches. One switch is placed in each of the phase a compartment and the phase c compartment, and two switches are placed in each of the phase b compartment and the neutral N compartment. It can be seen that K1 and K2 are placed in the neutral compartment (N) and are controlled by the switch control device in that compartment. K3 is placed in the phase C compartment and is controlled by the switch control device in that compartment. K4 and K5 are placed in the phase B compartment and are controlled by the switch control device in that compartment. Thus, each phase is connected or disconnected by two switches. The two switches controlling each phase line are not controlled by the same switch control device. This means that when only one prong of the power plug 4 is inserted, the connector assembly is de-energized. It is energized only when all prongs 6 are inserted and securely fastened. The neutral line N on the connector assembly is not controlled by the switches, and the input and output terminals are directly connected. It can be used as either a neutral line or a protective neutral line, depending on actual usage requirements.

[0093] The circuit diagram and circuit diagram of a three-phase, four-pin power connector assembly. As can be seen from the circuit diagram, phase a of the three-phase power supply is controlled by K1 and K6; phase b is controlled by K2 and K5; and phase c is controlled by K3 and K4. The neutral line N is not controlled by a switch, and the input and output terminals are directly connected. K1 and K2 are linked and controlled by the control device of the neutral line compartment; K4 and K5 are linked and controlled by the control device of the phase line b compartment; K3 is controlled by the control device of the phase line c compartment; and K6 is controlled by the control device of the phase line a compartment. Therefore, only when the three-phase, four-wire power plug blades 6 are fully inserted into the power plug clip 2 of the connector assembly and tightened, the power supply is energized and power control is achieved. Similarly, if no power conductive blade is inserted or only one power conductive blade is inserted, the power supply cannot be connected, preventing electric shock.

[0094] A top view of the three-phase, four-hole connector assembly reveals six groups of power conductive plate assemblies, totaling 12 power conductive plates, within each of the four compartments. Each group consists of a movable power conductive plate 9 and a static power conductive plate 8. Each of the four compartments also houses a switch contact plate control device. The center of the power plug clip 2 within the control device is aligned with the center of the respective corresponding socket, facilitating insertion and removal of the power conductive plate of the power plug 4. The switch contact plate control devices in the neutral N compartment and the phase b compartment feature dual V-shaped support plates 12, controlling two groups of power conductive plate assemblies. The switch contact plate control devices in the phase a and phase c compartments feature a single V-shaped support plate 12, controlling one group of switch contact plates. When the power plug 4 is not inserted into the power plug clip 2, the V-shaped support plates 12 are not extended, and the movable power conductive plates 9 and static power conductive plates 8 within any rubber sleeve are not in contact, effectively de-energizing the device. When the power plug blade 6 is inserted into the power plug clamp 2, the V-shaped support plate 12 is pushed outward, causing all the moving blades to deflect and the moving blade contacts to contact the static blade contacts, thus connecting the power supply. Because each set of conductive blade contacts is covered by the waterproof rubber sleeve 7, they are isolated from all switch contact control devices, achieving waterproofing.

[0095] In order to prevent the power plug 4 from loosening after being inserted into the power connector assembly, a mechanical locking device and a magnetic locking device are provided on the connector assembly housing 1. Figure 14 It is a mechanical locking device. Figure 4It is a magnetic locking device. The mechanical locking device consists of a locking plate 3 (two sloped sliders on the left and right, and a sliding sleeve). When the power plug 4 is inserted into the socket, the two sides of the plug press against the inclined surfaces of the sliders, and the downward thrust causes the sliders to move apart to the left and right. The power plug 4 is then inserted into the connector socket and tightened. The sliders are then manually pushed inward. The flat surface of the sliders blocks the power plug 4, preventing it from being removed, thus locking the power plug 4. To remove the power plug 4, simply push the two sliders outward. The power plug 4 can be removed without being blocked by the sliders. The magnetic locking device features a magnet embedded in the center of the upper cover. Under normal circumstances, the magnet is recessed 1 mm beyond the water barrier 5. When the power plug 4 is inserted into the connector, the magnets on the housing 1 and the magnets on the power plug 4 tightly engage, generating a certain suction force (up to 3-5 kg). This compresses the water barrier 5 on the housing 1 and maintains the suction force, achieving a water-proof effect.

[0096] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A waterproof power connector assembly, comprising a power plug and a power socket assembly, wherein the power plug is provided with a power plug blade, and the power socket assembly comprises an integrally formed housing and a switch control device, a power conductive sheet, a power conductive sheet, a static sheet, and a bottom plate disposed within the housing; characterized in that: The switch control device includes a waterproof rubber sleeve, a U-shaped bracket, a V-shaped support plate, a power plug clip, and a protective plate; the power conductive plate static plate, the power conductive plate movable plate, the waterproof rubber sleeve, and the U-shaped bracket are respectively fixed to the base plate; the power plug clip is fixed to the U-shaped bracket; the V-shaped support plate is movably placed on the U-shaped bracket; the protective plate is placed between the power conductive plate movable plate and the support plate on the U-shaped bracket; the waterproof rubber sleeve includes an integrally formed rubber sheet and rubber sleeve; the V-shaped support plate is provided with a circular arc chamfer; the locking device includes a first magnet block and a second magnet block; the first magnet block is fixed to the outer shell, and the second magnet block is fixed to the power plug.

2. A waterproof power connector assembly according to claim 1, characterized in that: The protective plate, the power plug clamp, the V-shaped support plate and the U-shaped bracket are placed in the waterproof rubber sleeve.

3. A waterproof power connector assembly according to claim 1, characterized in that: The static power conductive sheet and the dynamic power conductive sheet are placed in the waterproof rubber sleeve.

4. A waterproof power connector assembly according to claim 1, characterized in that: The U-shaped bracket is provided with a rectangular hole for accommodating the V-shaped support plate.

5. The waterproof power connector assembly according to claim 1, characterized in that: A water-isolating neutral line is provided in the shell.

6. A waterproof power connector assembly according to claim 1, characterized in that: A water-isolating pad is fixedly provided on the shell.

7. A waterproof power connector assembly according to any one of claims 1 to 6, characterized in that: It also includes a locking device; the locking device includes a locking plate; the locking plate is fixed on the shell.

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