Wall socket with mistaken touch prevention leakage protection and fault arc protection structure

Abstract

The utility model relates to a wall socket with a mistaken touch prevention electric leakage protection and fault arc protection structure, which comprises an upper cover, a bottom cover bolt, a circuit board, a binding post, a first connecting lead, a second connecting lead, a circuit connecting assembly and a disconnecting assembly, the bottom cover is connected with the upper cover through a plurality of bolts, the circuit board is arranged on one side in the bottom cover, and the circuit board is arranged on the other side in the bottom cover. At least two binding posts are installed on the circuit board, the binding posts are electrically connected with the circuit board through second connecting wires, and pins are installed on the other side of the interior of the bottom cover. When the socket mistakenly touches the reset button in use, the reset button firstly slides downwards to extrude the first elastic piece to deform, and the conductive metal sheet is kept to be connected with the power supply under the action of the second elastic piece, so that power failure caused by mistakenly touching the reset button of the socket is avoided, and influence on use of the socket due to mistakenly touching is prevented.

Description

Technical Field

[0001] This utility model relates to a socket, and more particularly to a wall socket with leakage protection and fault arc protection structure. Background Technology

[0002] A socket, also known as a power socket or switch socket, is a receptacle that has one or more circuit wires that can be inserted. Various wires can be inserted through it, which facilitates connection with other circuits. The connection and disconnection of the circuit is achieved by connecting and disconnecting the wires and copper components.

[0003] A residual current device (RCD) socket is a type of socket that provides protection against leakage current and over / under voltage. Commonly known as a leakage socket, it automatically trips and disconnects power when subjected to leakage current caused by lightning strikes, high currents, or line or equipment loads, thus protecting electrical appliances and property. Most current sockets use a single-stage travel mechanism, activated by a button. When the button is pressed to connect the circuit, the button causes a hook to slide downwards, pulling a metal piece upwards, connecting the socket's pins to the power supply. However, if the hook remains engaged with the metal piece for an extended period, or if the button is accidentally pressed, the hook will press the metal piece downwards, directly disconnecting the socket's pins from the power supply, thus affecting the socket's functionality.

[0004] In addition, the main hazard of electrical equipment fault arcing is fire. When a fault arc occurs, its center temperature can reach 3000℃~4000℃, accompanied by molten metal splashing out. The high temperature and heat generated by the fault arc can easily ignite the insulation layer of the circuit, causing a fire. If there are flammable materials near the fault point, they can also easily ignite, leading to a fire. Currently, fault arc circuit breakers are usually installed in distribution cabinets, and there are no corresponding wall sockets with fault circuit interruption functions. Utility Model Content

[0005] In order to overcome the shortcomings of existing wall sockets with anti-accidental contact leakage protection, such as the hook body being hooked on the metal piece for a long time, and the metal piece being deformed when the button is accidentally pressed, which damages the starting structure of the leakage protection socket and affects its function, as well as the lack of fault arc detection and circuit breaking functions, the technical problem of this utility model is: to provide a wall socket with anti-accidental contact leakage protection and fault arc protection structure.

[0006] The technical implementation scheme of this utility model is as follows: a wall socket with anti-misoperation leakage protection and fault arc protection structure, including a top cover, a bottom cover, a circuit board, terminals, pins, a first connecting wire, a second connecting wire, a circuit connection component, and a disconnect component. The circuit board is installed on one side inside the bottom cover, and at least two terminals are installed on the circuit board. The terminals are electrically connected to the circuit board via the second connecting wire. The pins are installed on the other side inside the bottom cover, and the pins are electrically connected to the circuit board via the first connecting wire. The circuit board is provided with a circuit connection component that controls the circuit connection between the terminals and the pins. A disconnect component that controls the disconnection of the pins is provided at the bottom of the circuit board. It also includes a limit seat, a reset button, a first elastic element, and a second elastic element. A limit seat is embedded inside the top cover, and a reset button is slidably installed inside the limit seat. A first elastic element connects the reset button to the sliding rod, and a second elastic element connects the sliding rod to the circuit board. The circuit board also has leakage protection circuits and fault arc protection circuits respectively. The leakage current protection circuit includes a residual current detection coil. The live wire and neutral wire input to the pin pass through the residual current detection coil. The output terminal of the leakage current protection circuit is connected to the disconnect component. The input terminal of the fault arc protection circuit is connected to the pin respectively. The output terminal of the fault arc protection circuit is connected to the disconnect component.

[0007] Furthermore, it is particularly preferred that the circuit connection assembly includes a current transformer, conductive metal sheets, a fixed base, a lever, a sliding rod, a sliding metal sheet, and a third elastic element. The current transformer and two conductive metal sheets are installed on the side of the circuit board near the bottom cover. The current transformer is electrically connected to the circuit board. Both conductive metal sheets are electrically connected by pins, and the conductive metal sheets are flipped to contact the circuit board. The fixed base is located on the side of the circuit board near the bottom cover. A sliding rod passes through the circuit board and has a slot. A lever is slidably mounted on the fixed base in the vertical direction. The lever slides and contacts the two sliding metal sheets. A sliding metal sheet is slidably mounted on the fixed base in the horizontal direction. The sliding metal sheet engages with the slot on the sliding rod. A third elastic element connects the sliding metal sheet and the sliding rod.

[0008] Furthermore, it is particularly preferred that the disconnecting component includes an electromagnetic base and an iron core, with the electromagnetic base electrically connected to the circuit board installed in the fixed base, the iron core being slidably disposed in the circuit board, and a boss being provided at one end of the iron core near the sliding metal piece, the iron core being engaged with the sliding metal piece through the boss.

[0009] In addition, it is particularly preferred that the device also includes guide rods, with guide rods provided on both sides of the reset button, and guide grooves corresponding to the guide rods provided on the limit seat, allowing the guide rods to slide up and down along the guide grooves.

[0010] Furthermore, it is particularly preferred that the reset button has an upper annular boss at its top, the sliding rod has a circular groove at its top, and the sliding rod has a lower annular boss in the circular groove at its top. The two ends of the third elastic member are respectively sleeved on the upper annular boss of the reset button and the lower annular boss of the sliding rod.

[0011] In addition, it is particularly preferred that the device also includes protrusions, with multiple protrusions arranged circumferentially on the limiting seat, and an annular limiting groove opened on the top of the inner cover, with the protrusions contacting the annular limiting groove on the top of the inner cover.

[0012] In addition, it is particularly preferred that the device also includes a buckle, with buckles fixed to both sides of the bottom of the limiting seat, and the buckles passing through the circuit board and engaging with the fixing seat.

[0013] Furthermore, it is particularly preferred that the contact surface between the sliding rod and the sliding metal sheet is an inclined surface.

[0014] In addition, the fault arc protection circuit also includes an arc test button. A button through hole is provided on the upper cover, and the arc test button extends from the button through hole to the surface of the upper cover. The switch part of the arc test button is connected to the test input port of the fault arc protection circuit.

[0015] In addition, the leakage protection circuit also includes a leakage test button. A button through-hole is provided in the upper cover, and the leakage test button extends from the button through-hole to the surface of the upper cover. The switch part of the leakage test button is connected to the test input port of the leakage protection circuit.

[0016] Compared with the prior art, the present invention has the following advantages: 1. When the socket is accidentally touched, the reset button slides down and squeezes the first elastic element to deform. Under the action of the second elastic element, the conductive metal piece is kept connected to the power supply, thereby preventing the socket from being cut off due to accidental touch of the reset button and preventing the use of the socket from being affected by accidental touch.

[0017] 2. When the reset button slides up and down within the limit seat, the guide rod slides up and down along the guide groove, so that the reset button always remains straight up and down, avoiding deflection of the reset button when it is used repeatedly, which would affect its use. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional sectional view of the top cover, bottom cover, and circuit board of this utility model.

[0020] Figure 3 This is a three-dimensional sectional view of the top cover, current transformer, and fixing base of this utility model.

[0021] Figure 4This is a three-dimensional cross-sectional view of the fixed base, lever, and sliding metal plate of this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the circuit board, lever, and sliding metal sheet of this utility model.

[0023] Figure 6 This is a three-dimensional sectional view of the circuit board, limit seat, and lever of this utility model.

[0024] Figure 7 This is a three-dimensional sectional view of the limiting seat, reset button, and lever of this utility model.

[0025] Figure 8 This is a three-dimensional cross-sectional view of the fixed base, sliding metal, and electromagnetic base of this utility model.

[0026] Figure 9 This is a three-dimensional sectional view of the lever, electromagnetic base, and iron core of this utility model.

[0027] Figure 10 This is a three-dimensional cross-sectional view of the limiting seat, sliding rod, and sliding metal sheet of this utility model.

[0028] Figure 11 This is an exploded view of the limit seat, reset button, and sliding rod of this utility model.

[0029] Figure 12 This is a three-dimensional cross-sectional view of the first and second elastic elements of this utility model.

[0030] Figure 13 This is the circuit schematic diagram of this utility model.

[0031] The above-mentioned attached drawings include the following reference numerals: 1. Top cover, 2. Bottom cover, 3. Bolt, 4. Circuit board, 5. Terminal block, 6. Pin, 7. Current transformer, 8. First connecting wire, 9. Second connecting wire, 10. Conductive metal sheet, 11. Limiting seat, 12. Reset button, 13. Fixing seat, 14. Lever, 15. Sliding rod, 1501. First elastic element, 16. Second elastic element, 17. Sliding metal sheet, 18. Third elastic element, 19. Electromagnetic seat, 20. Iron core, 21. Guide rod, 22. Guide groove, 23. Protrusion, 24. Buckle. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0033] Example: A wall socket with anti-accidental contact leakage protection and fault arc protection structure, see reference. Figures 1-12 As shown, the device includes an upper cover 1, a bottom cover 2, bolts 3, a circuit board 4, terminals 5, pins 6, a current transformer 7, a first connecting wire 8, a second connecting wire 9, a conductive metal sheet 10, a fixing base 13, a lever 14, a sliding rod 15, a sliding metal sheet 17, a third elastic element 18, and a disconnecting assembly. The bottom cover 2 is connected to the upper cover 1 by multiple bolts 3. A circuit board 4 is installed on one side of the interior of the bottom cover 2, and two terminals 5 are installed on the circuit board 4. The terminals 5 are electrically connected to the circuit board 4 by the second connecting wire 9. A pin 6 is installed on the other side of the interior of the bottom cover 2, and the pin 6 is connected to the first connecting wire 9 by the second connecting wire 9. Line 8 is electrically connected to circuit board 4. A current transformer 7 and two conductive metal plates 10 are installed at the bottom of circuit board 4. The current transformer 7 is electrically connected to circuit board 4, and both conductive metal plates 10 are electrically connected to pins 6. The conductive metal plates 10 are flipped to contact circuit board 4. A fixing base 13 is located at the bottom of circuit board 4. A sliding rod 15 passes through circuit board 4, and a slot is provided on the sliding rod 15. A lever 14 is slidably mounted on the fixing base 13 in the vertical direction, and the lever 14 slides to contact two sliding metal plates 17. The sliding metal plates 17 are also slidably mounted on the fixing base 13 in the horizontal direction, and the sliding metal plates 17 contact the sliding metal plates 17. The sliding rod 15 is engaged with a slot, and the contact surface between the sliding rod 15 and the sliding metal plate 17 is inclined. When the sliding rod 15 slides and contacts the sliding metal plate 17, it reduces the resistance of the sliding metal plate 17 to the sliding rod 15, preventing the sliding rod 15 from squeezing and deforming the sliding metal plate 17. A third elastic element 18 connects the sliding metal plate 17 and the sliding rod 15. The bottom of the circuit board 4 is provided with a control pin 6 and a power-off disconnect component, and also includes a limit seat 11, a reset button 12, a first elastic element 1501 and a second elastic element 16. The limit seat 11 is embedded inside the upper cover 1 to limit the movement. A reset button 12 is slidably installed inside the seat 11. Guide rods 21 are provided on both sides of the reset button 12. The limiting seat 11 has a guide groove 22 corresponding to the guide rods 21. The guide rods 21 slide up and down along the guide groove 22. When the reset button 12 slides up and down in the limiting seat 11, the guide rods 21 slide up and down along the guide groove 22, so that the reset button 12 always remains straight up and down, avoiding deflection when the reset button 12 is used repeatedly. A first elastic element 1501 is connected between the reset button 12 and the sliding rod 15, and a second elastic element 16 is connected between the sliding rod 15 and the circuit board 4.

[0034] Reference Figure 13 The leakage current protection circuit is used to detect whether there is leakage current in the electrical equipment connected to pin 6. It includes a residual current detection coil. The live wire and neutral wire input to pin 6 pass through the residual current detection coil. When leakage occurs, the current in the live wire and neutral wire becomes unbalanced, generating an induced signal in the residual current detection coil. This induced signal is input to the leakage current protection chip, such as FM2147B. The leakage current protection chip outputs a control signal to the disconnect component to disconnect the power supply. To determine whether the leakage current protection circuit can operate normally, a leakage current test button 26 is also provided. A button through-hole is provided in the upper cover 1, and the leakage current test button 26 extends from the button through-hole to the surface of the upper cover. The switch part of the leakage current test button 26 is connected to the test input port of the leakage current protection circuit. Pressing the leakage current test button 26 generates a test signal to the leakage current protection circuit to detect whether the leakage current protection circuit can be disconnected by the disconnect component. If it cannot be disconnected, the entire socket should be replaced.

[0035] The arc fault protection circuit is used to detect whether there is abnormal arc discharge in the electrical equipment inserted into pin 6. It includes a current and voltage monitoring circuit. Specifically, the output current of pin 6 is sampled by a current transformer or sampling circuit, then input to an amplification or filtering circuit. The chip records the changes in current and voltage. If analysis determines that there is an abnormal current or voltage change caused by an arc fault, a control signal is output to the disconnect component to disconnect the power supply. To determine whether the arc fault protection circuit can operate normally, an arc test button 25 is also provided. A button through-hole is provided in the upper cover 1, and the arc test button 25 extends from the button through-hole to the surface of the upper cover. The switch part of the arc test button 25 is connected to the test input port of the arc fault protection circuit. Pressing the arc test button 25 generates a test signal to the arc fault protection circuit to detect whether the arc fault protection circuit can be disconnected by the disconnect component. If it cannot be disconnected, the entire socket should be replaced.

[0036] See Figures 8-10 As shown, the disconnecting assembly includes an electromagnetic base 19 and an iron core 20. The electromagnetic base 19, which is electrically connected to the circuit board 4, is installed in the fixed base 13. The iron core 20 is slidably arranged in the circuit board 4, and a boss is provided at one end of the iron core 20 near the sliding metal piece 17. The iron core 20 is engaged with the sliding metal piece 17 through the boss.

[0037] See Figure 10 As shown, it also includes protrusions 23. Multiple protrusions 23 are arranged circumferentially on the limiting seat 11. An annular limiting groove is opened in the top of the inner cover 1. The protrusions 23 contact the annular limiting groove in the top of the inner cover 1. Buckles 24 are fixedly connected to both sides of the bottom of the limiting seat 11. The buckles 24 pass through the circuit board 4 and are engaged with the fixing seat 13, so that the limiting seat 11 is fixed between the circuit board 4 and the upper cover 1, maintaining the stability of the limiting seat 11 during use.

[0038] The reset button 12 has an upper annular protrusion at its top, and the sliding rod 15 has a circular groove at its top. The circular groove at the top of the sliding rod 15 has a lower annular protrusion. The two ends of the third elastic element 18 are respectively sleeved on the upper annular protrusion of the reset button 12 and the lower annular protrusion of the sliding rod 15, thereby preventing the third elastic element 18 from disengaging when the reset button 12 and the sliding rod 15 slide up and down. When the reset button 12 is pressed down, the upper annular protrusion of the reset button 12 enters the circular groove at the top of the sliding rod 15, thereby guiding the reset button 12. When the upper annular protrusion of the reset button 12 contacts the lower annular protrusion of the sliding rod 15, the reset button 12 then presses the sliding rod 15 to slide down.

[0039] When the socket is needed, connect the positive and negative terminals of the external mains power to the two terminals 5 respectively. When starting the socket, press down on the reset button 12. The reset button 12 slides down and compresses the first elastic element 1501, causing it to deform. When the reset button 12 slides down to contact the sliding rod 15, the reset button 12 drives the sliding rod 15 to slide down. The sliding rod 15 compresses the second elastic element 16, causing it to deform. The sliding rod 15 slides down and compresses the sliding metal piece 17 to move outward. The sliding metal piece 17 compresses the third elastic element 18, causing it to deform. When the sliding rod 15 slides and the slot passes over the sliding metal piece 17, the slot engages with the sliding metal piece 17. Then, release the reset button 12. The first elastic element 1501 returns to its original shape, causing the reset button 12 to slide up and reset. The second elastic element 16 returns to its original shape, causing the sliding metal piece 17 and the lever 14 to slide up. The lever 14 slides up and bends the metal conductive piece upward to contact the circuit board 4, thereby connecting the circuit between the pin 6 and the circuit board 4. At this time, the socket is powered on. When the socket is accidentally activated by the reset button 12, the reset button 12 first slides downwards, pressing the first elastic element 1501 to deform. At this time, under the action of the second elastic element 16, the conductive metal piece 10 is kept connected to the power supply through the sliding rod 15, thereby preventing the socket from being disconnected due to accidental activation of the reset button 12. When a short circuit occurs in the socket, the current transformer 7 detects the short circuit current and controls the electromagnetic base 19 to generate a magnetic field through the circuit on the circuit board 4. This causes the iron core 20 to pull the sliding metal piece 17 to slide inwards to reset. The sliding metal piece 17 disengages from the slot on the sliding rod 15. The second elastic element 16 drives the sliding rod 15 to slide upwards to reset. Subsequently, the electromagnetic base 19 is deactivated and the electromagnetic field disappears. The third elastic element 18 returns to its original state, driving the sliding metal piece 17 and the iron core 20 to reset. The sliding metal piece 17 and the lever 14 slide downwards under the action of gravity, causing the lever 14 to disengage from the conductive metal piece 10. The conductive metal piece 10 flips downwards to reset, automatically disconnecting the socket from the power supply, thereby achieving the purpose of leakage protection.

[0040] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A wall socket with anti-misoperation leakage protection and fault arc protection structure, comprising an upper cover (1), a bottom cover (2), a circuit board (4), terminals (5), pins (6), a first connecting wire (8), a second connecting wire (9), a circuit connection assembly, and a disconnection assembly. The circuit board (4) is installed on one side inside the bottom cover (2), and at least two terminals (5) are installed on the circuit board (4). The terminals (5) are electrically connected to the circuit board (4) via the second connecting wire (9). A pin (6) is installed on the other side inside the bottom cover (2), and the pin (6) is electrically connected to the circuit board (4) via the first connecting wire (8). A circuit connection assembly is provided on the circuit board (4) to connect the terminals (5) and the pins (6). A disconnection assembly is provided at the bottom of the circuit board (4) to connect the pins (6) to the circuit board (4). The socket is characterized in that: It also includes a limited seat (11), a reset button (12), a first elastic element (1501) and a second elastic element (16). The limited seat (11) is embedded inside the upper cover (1). The reset button (12) is slidably arranged inside the limited seat (11). The first elastic element (1501) is connected between the reset button (12) and the sliding rod (15). The second elastic element (16) is connected between the sliding rod (15) and the circuit board (4). The circuit board (4) is also provided with a leakage protection circuit and a fault arc protection circuit respectively. The leakage protection circuit includes a residual current detection coil. The live wire and the neutral wire input to the plug (6) pass through the residual current detection coil. The output terminal of the leakage protection circuit is connected to the disconnect component. The input terminal of the fault arc protection circuit is connected to the plug (6) respectively. The output terminal of the fault arc protection circuit is connected to the disconnect component.

2. The wall socket with anti-accidental contact leakage protection and fault arc protection structure according to claim 1, characterized in that: The circuit connection assembly includes a current transformer (7), a conductive metal sheet (10), a mounting base (13), a lever (14), a sliding rod (15), a sliding metal sheet (17), and a third elastic element (18). The current transformer (7) and two conductive metal sheets (10) are installed on the side of the circuit board (4) near the bottom cover (2). The current transformer (7) is electrically connected to the circuit board (4), and both conductive metal sheets (10) are electrically connected to the pins (6). The conductive metal sheets (10) are in contact with the circuit board (4). The circuit board (4) is near the bottom cover (2). A fixed seat (13) is provided on one side of the circuit board (4), and a sliding rod (15) runs through the circuit board (4). A slot is provided on the sliding rod (15). A lever (14) is slidably provided on the fixed seat (13) in the vertical direction. The lever (14) slides and contacts two sliding metal pieces (17). A sliding metal piece (17) is slidably provided on the fixed seat (13) in the horizontal direction. The sliding metal piece (17) engages with the slot on the sliding rod (15). A third elastic element (18) connects the sliding metal piece (17) and the sliding rod (15).

3. The wall socket with anti-accidental contact leakage protection and fault arc protection structure according to claim 2, characterized in that: The disconnecting assembly includes an electromagnetic base (19) and an iron core (20). The electromagnetic base (19) which is electrically connected to the circuit board (4) is installed in the fixed base (13). The iron core (20) is slidably arranged in the electromagnetic base (19), and a boss is provided at one end of the iron core (20) near the sliding metal piece (17). The iron core (20) is engaged with the sliding metal piece (17) through the boss.

4. The wall socket with anti-accidental contact leakage protection and fault arc protection structure according to claim 1, characterized in that: It also includes a guide rod (21), and guide rods (21) are provided on both sides of the reset button (12). The limit seat (11) is provided with a guide groove (22) corresponding to the guide rod (21), and the guide rod (21) slides up and down along the guide groove (22).

5. The wall socket with anti-accidental contact leakage protection and fault arc protection structure according to claim 1, characterized in that: The reset button (12) has an upper annular protrusion at the top, the sliding rod (15) has a circular groove at the top, and the sliding rod (15) has a lower annular protrusion in the circular groove at the top. The two ends of the third elastic element (18) are respectively sleeved on the upper annular protrusion of the reset button (12) and the lower annular protrusion of the sliding rod (15).

6. The wall socket with anti-accidental contact leakage protection and fault arc protection structure according to claim 1, characterized in that: It also includes protrusions (23), and the limiting seat (11) is provided with multiple protrusions (23) in the circumferential direction. The top of the upper cover (1) is provided with an annular limiting groove, and the protrusions (23) are in contact with the annular limiting groove at the top of the upper cover (1).

7. The wall socket with anti-accidental contact leakage protection and fault arc protection structure according to claim 1, characterized in that: It also includes a buckle (24), and the bottom sides of the limit seat (11) are fixed with buckles (24), and the buckles (24) pass through the circuit board (4) and are engaged with the fixed seat (13).

8. The wall socket with anti-accidental contact leakage protection and fault arc protection structure according to claim 3, characterized in that: The contact surface between the sliding rod (15) and the sliding metal plate (17) is an inclined plane.

9. A wall socket with anti-accidental contact leakage protection and fault arc protection structure according to claim 1, characterized in that: The fault arc protection circuit also includes an arc test button (25). A button through hole is provided on the upper cover (1). The arc test button (25) extends through the button through hole to the surface of the upper cover. The switch part of the arc test button (25) is connected to the test input port of the fault arc protection circuit.

10. A wall socket with anti-accidental contact leakage protection and fault arc protection structure according to claim 1, characterized in that: The leakage protection circuit also includes a leakage test button (26). A button through hole is provided on the upper cover (1). The leakage test button (26) extends through the button through hole to the surface of the upper cover. The switch part of the leakage test button (26) is connected to the test input port of the leakage protection circuit.

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