A socket power supply device and connection method that can prevent live insertion

Abstract

The application discloses a socket power supply device and a connecting method which can prevent live plug-in and belongs to the technical field of design and manufacture of high-power load power supply socket. The socket power supply device comprises a power supply socket box, a plug and an electric machine. The connecting method which can prevent live plug-in comprises the following steps. The method for preventing the plug from being pulled out of the socket with electricity comprises the following steps: S11, unbuckling the buckle and providing external force to the plug to pull it out of the socket; S12, stroke impact rod is reset through a spring, the normally open contact of a micro switch is disconnected, and a power supply breaker is automatically tripped. The method for preventing the plug from being inserted into the socket with electricity comprises the following steps: S21, when the plug is not inserted into the socket, the normally open contact of the micro switch is disconnected, and the power supply breaker cannot be tripped; S22, providing external force to the plug to insert it into the socket and buckling the buckle; S23, stroke impact rod touches the micro switch, and the power supply breaker is normally tripped. The application can effectively prevent the problem of spark generated by live plug-in of the socket and increase the safety coefficient.

Description

TECHNICAL FIELD

[0001] The application relates to a socket power supply device and a connecting method capable of preventing live plug-in, which is used for plug-in of power supply of a large-power load and belongs to the technical field of design and manufacture of socket of the power supply of the large-power load. BACKGROUND

[0002] Now, a large-power load (such as a welding machine, a fan, etc.) of about 40KW generally adopts a mode of directly connecting a line at the lower end of an earth leakage circuit breaker, and the mode can meet the requirements in the case that the number of electric loads is not large and the frequency of disconnection is not high. However, the mode increases the work burden and easily causes safety risks in the case that the number of electric loads is large, the frequency of disconnection is high and the electrical cabinet is opened and closed. SUMMARY

[0003] The application aims to provide a socket power supply device and a connecting method capable of preventing live plug-in, which can effectively prevent the problem of spark generated by live plug-in of the socket and increase the safety factor for production.

[0004] The application adopts the technical scheme as follows.

[0005] The application relates to a socket power supply device and a connecting method capable of preventing live plug-in, which comprises a power socket box, a plug and an electric machine.

[0006] The power circuit breaker is internally provided with an earth leakage circuit breaker undervoltage release coil.

[0007] The socket comprises a socket rear end, a socket body and a socket front end, the socket rear end and the socket body are provided with reserved holes, the outer surface of the socket rear end is provided with a socket main power connection terminal and a socket auxiliary contact connection terminal, and the interior of the socket rear end is provided with a micro switch, a reset spring and a stroke impact rod.

[0008] The socket auxiliary contact connection terminal comprises a socket auxiliary contact connection terminal b end and a socket auxiliary contact connection terminal c end.

[0009] Further, the micro switch is connected with the socket auxiliary contact connection terminal b end and the socket auxiliary contact connection terminal c end.

[0010] Further, the stroke impact rod is provided with a baffle in the middle part, and the two ends of the stroke impact rod are respectively inserted into the reserved holes in the socket rear end and the socket body.

[0011] Further, the reset spring is sleeved on the stroke impact rod, one end of the reset spring is in contact with the baffle of the stroke impact rod, and the other end of the reset spring is in contact with the socket rear end.

[0012] Further, the main power supply connection terminals are connected with ground wire, U wire incoming terminal of power supply circuit breaker, V wire incoming terminal of power supply circuit breaker and W wire incoming terminal of power supply circuit breaker respectively.

[0013] Further, the electric leakage circuit breaker under-voltage release coil comprises an electric leakage circuit breaker under-voltage release coil a end and an electric leakage circuit breaker under-voltage release coil tail end.

[0014] Further, the electric leakage circuit breaker under-voltage release coil a end is connected with W wire, and the electric leakage circuit breaker under-voltage release coil tail end is connected with socket auxiliary contact connection terminal b end.

[0015] Further, the socket auxiliary contact connection terminal c end is connected with N wire.

[0016] Further, the socket is provided with screw holes, and is fixedly connected with threaded holes of the power socket box through four screws.

[0017] Further, the socket and the plug are respectively provided with buckles.

[0018] Further, a socket power supply connection method capable of preventing live plug-in, adopts a socket power supply device capable of preventing live plug-in, and the method for preventing the plug from being live pulled out of the socket comprises

[0019] S11, the buckle is unfastened, external force is provided to the plug to pull it out of the socket, so that the plug no longer presses the stroke striker;

[0020] S12, the stroke striker is reset through the spring, the normally open contact of the micro switch is disconnected, the electric leakage circuit breaker under-voltage release coil loses power, and the power supply circuit breaker is automatically tripped;

[0021] The method for preventing the plug from being live inserted into the socket comprises

[0022] S21, when the socket is not inserted with the plug, the normally open contact of the micro switch is disconnected, the electric leakage circuit breaker under-voltage release coil loses power, and the power supply circuit breaker cannot be closed;

[0023] S22, external force is provided to the plug to insert it into the socket, and the buckle is fastened, so that the plug presses the stroke striker;

[0024] S23, the stroke striker touches the micro switch, the normally open contact of the micro switch is connected, the electric leakage circuit breaker under-voltage release coil is powered, and the power supply circuit breaker is normally closed.

[0025] Further, after the plug is inserted into the socket, the normally open contact of the micro switch is connected, the electric leakage circuit breaker under-voltage release coil a end is connected with W wire, the electric leakage circuit breaker under-voltage release coil tail end is connected to socket auxiliary contact connection terminal b end, socket auxiliary contact connection terminal c end is connected to N wire of the power supply, and a 220V electric circuit is formed.

[0026] In summary, due to the adoption of the technical scheme, the application has the following beneficial effects:

[0027] In the application, the leakage circuit breaker is matched with the reset spring and the stroke ram in the socket with auxiliary contacts, which can quickly and safely plug and unplug the power supply with large load, solves the problem of plugging and unplugging the power supply with live wire, and generates sparks. When the socket is empty, the under-voltage release coil loses power, and the leakage circuit breaker cannot be closed, so the socket is not live, which increases the safety. Only when the plug is fully inserted into the socket and locked, the micro switch normally open contact is connected, the under-voltage release coil is powered, and the leakage circuit breaker can be closed to normally supply power. If the plug is not inserted in place, the leakage circuit breaker cannot be closed, avoiding poor contact of the main contact. When the plug is unplugged with live wire, the leakage circuit breaker automatically trips to cut off the power supply, avoiding sparks. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of the application;

[0029] Figure 2 is a schematic diagram of the structure of the socket of the application;

[0030] Figure 3 is a schematic diagram of the structure of the plug of the application; Figure 2 is a right view of the application;

[0031] Figure 4 is an enlarged view of A of the application; Figure 2

[0032] Figure 5 is a schematic diagram of the structure of the plug of the application;

[0033] Marked in the figure: 1 power socket box, 2 power circuit breaker, 3 socket, 4 plug, 5 electric machine, 6 leakage circuit breaker under-voltage release coil, 601 leakage circuit breaker under-voltage release coil a end, 602 leakage circuit breaker under-voltage release coil tail end, 7 main power supply terminal, 8 micro switch, 9 socket auxiliary contact terminal, 901 socket auxiliary contact terminal b end, 902 socket auxiliary contact terminal c end, 10 reset spring, 11 stroke ram, 12 socket rear end, 13 socket body, 14 socket front end, 15 reserved hole, 16 baffle, 17 buckle, 18 screw hole, automatic reset cover 19. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the application more clear and explicit, the application is further described in detail below in combination with the drawings and examples.

[0035] Example one:

[0036] As Figures 1-4 ​As shown, the present application comprises a power socket box 1, a plug 4 and an electric machine 5, the power socket box 1 is internally provided with a power circuit breaker 2, and the power socket box 1 is externally fixedly connected with a socket 3;

[0037] The power circuit breaker 2 is internally provided with a leakage circuit breaker undervoltage release coil 6, the socket 3 comprises a socket rear end 12, a socket body 13 and a socket front end 14, the socket rear end 12 and the socket body 13 are provided with a reserved hole 15, the outer surface of the socket rear end 12 is provided with a socket main power connection terminal 7 and a socket auxiliary contact connection terminal 9, the socket rear end 12 is internally provided with a micro switch 8, a reset spring 10 and a stroke impact rod 11, the socket auxiliary contact connection terminal 9 comprises a socket auxiliary contact connection terminal b end 901 and a socket auxiliary contact connection terminal c end 902, the micro switch 8 is connected with the socket auxiliary contact connection terminal b end 901 and the socket auxiliary contact connection terminal c end 902, the stroke impact rod 11 is provided with a baffle 16 in the middle, the stroke impact rod 11 is inserted into the reserved hole 15 of the socket rear end 12 and the socket body 13 at both ends, the reset spring 10 is sleeved on the stroke impact rod 11, one end of the reset spring 10 is in contact with the baffle 16 of the stroke impact rod 11, and the other end of the reset spring 10 is in contact with the socket rear end 12.

[0038] The method for preventing the plug 4 from being electrified to be pulled out of the socket 3 comprises

[0039] S11, the buckle 17 is released, an external force is provided to the plug 4 to pull out the socket 3, so that the plug 4 no longer presses down the stroke impact rod 11;

[0040] S12, the stroke impact rod 11 is reset through the spring 10, the normally open contact of the micro switch 8 is disconnected, the leakage circuit breaker undervoltage release coil 6 loses power, and the power circuit breaker 2 automatically trips;

[0041] Through the above method, the power circuit breaker 2 automatically trips, the power is cut off, sparks are avoided, and when sudden power failure or low line voltage occurs, the power circuit breaker 2 can also automatically trip to protect the electric machine 5, and when the plug 4 and the socket 3 are not in use, the power circuit breaker 2 cannot be closed, which can also ensure that the socket is not electrified when not in use, and safety is ensured.

[0042] The method for preventing the plug 4 from being electrified to be inserted into the socket 3 comprises

[0043] S21, when the socket 3 is not inserted into the plug 4, the normally open contact of the micro switch 8 is disconnected, the leakage circuit breaker undervoltage release coil 6 loses power, and the power circuit breaker 2 cannot be closed;

[0044] S22, an external force is provided to the plug 4 to be inserted into the socket 3, and the buckle 17 is buckled, so that the plug 4 presses down the stroke impact rod 11;

[0045] S23, the stroke impact rod 11 touches the micro switch 8, the normally open contact of the micro switch 8 is connected, the leakage circuit breaker undervoltage release coil 6 is powered, and the power circuit breaker 2 is normally closed.

[0046] Using the above method, only when the plug 4 is fully inserted into the socket 3 and the buckle 17 is fastened will the normally open contact of the micro switch 8 be connected, and the power circuit breaker 2 will be closed normally. In normal use, if a short circuit, undervoltage, overload, or leakage occurs, the power circuit breaker 2 will automatically cut off the power, ensuring the safety of personnel and electrical equipment 5.

[0047] Example 2:

[0048] like Figures 1-2 As shown, based on Embodiment 1, the main power supply terminal 7 is connected to the ground wire, the U-line input terminal of the power circuit breaker 2, the V-line input terminal of the power circuit breaker 2, and the W-line input terminal of the power circuit breaker 2, respectively. The undervoltage release coil 6 of the leakage circuit breaker includes an undervoltage release coil a-end 601 and an undervoltage release coil tail-end 602. The undervoltage release coil a-end 601 is connected to the W-line, and the undervoltage release coil tail-end 602 is connected to the socket auxiliary contact terminal b-end 901. The socket auxiliary contact terminal c-end 902 is connected to the N-line.

[0049] The undervoltage release coil 6 of the residual current circuit breaker (RCCB) is powered by 220V. A single-phase (W-phase) power supply is introduced to terminal a 601 of the RCCB undervoltage release coil. The tail end 602 of the RCCB undervoltage release coil is connected to terminal b 901 of the socket auxiliary contact wiring. Terminal c 902 of the socket auxiliary contact wiring is connected to the neutral (N) line of the power supply, forming a 220V electrical circuit. When the normally open contact of the microswitch 8 is closed, the RCCB undervoltage release coil 6 is energized; when the normally open contact of the microswitch 8 is open, the RCCB undervoltage release coil 6 is de-energized, causing the power circuit breaker 2 to trip or become unrecoverable.

[0050] Furthermore, the socket 3 is provided with screw holes 18, which are fixedly connected to the threaded holes of the power socket box 1 by four screws. The screw connection can facilitate disassembly and improve work efficiency.

[0051] Furthermore, the socket 3 and plug 4 are respectively provided with a buckle 17 to prevent poor contact and detachment. The front end 14 of the socket is provided with an automatic reset cover 19. When in use, the automatic reset cover 19 is opened and the plug 4 is unplugged. The automatic reset cover 19 will automatically return to cover the front end 14 of the socket to prevent the socket from being exposed to the air.

[0052] The above are embodiments of the present invention. The above embodiments and specific parameters are only for clearly illustrating the inventor's invention verification process and are not intended to limit the patent protection scope of the present invention. The patent protection scope of the present invention is still determined by its claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention should also be included within the protection scope of the present invention.

Claims

1. A socket power supply device capable of preventing live plug-in, comprising a power socket box (1), a plug (4) and an electric machine (5), characterized in that: a power circuit breaker (2) is arranged in the power socket box (1), and a socket (3) is fixedly connected to the outside of the power socket box (1); a leakage circuit breaker undervoltage release coil (6) is arranged in the power circuit breaker (2); the socket (3) comprises a socket rear end (12), a socket body (13) and a socket front end (14), a reserved hole (15) is arranged on the socket rear end (12) and the socket body (13), a socket main power terminal (7) and a socket auxiliary contact terminal (9) are arranged on the outer surface of the socket rear end (12), a micro switch (8), a reset spring (10) and a stroke impact rod (11) are arranged in the socket rear end (12); the socket auxiliary contact terminal (9) comprises a socket auxiliary contact terminal b end (901) and a socket auxiliary contact terminal c end (902); the micro switch (8) is connected with the socket auxiliary contact terminal b end (901) and the socket auxiliary contact terminal c end (902); a baffle (16) is arranged in the middle of the stroke impact rod (11), the stroke impact rod (11) is inserted into the reserved hole (15) of the socket rear end (12) and the socket body (13) respectively, the reset spring (10) is sleeved on the stroke impact rod (11), one end of the reset spring (10) is in contact with the baffle (16) of the stroke impact rod (11), and the other end of the reset spring (10) is in contact with the socket rear end (12); the main power terminal (7) is connected with a ground wire, a U wire incoming terminal of the power circuit breaker (2), a V wire incoming terminal of the power circuit breaker (2) and a W wire incoming terminal of the power circuit breaker (2) respectively; the leakage circuit breaker undervoltage release coil (6) comprises a leakage circuit breaker undervoltage release coil a end (601) and a leakage circuit breaker undervoltage release coil tail end (602); the leakage circuit breaker undervoltage release coil a end (601) is connected with the W wire, and the leakage circuit breaker undervoltage release coil tail end (602) is connected with the socket auxiliary contact terminal b end (901); the socket auxiliary contact terminal c end (902) is connected with an N wire; when the socket (3) is not inserted into the plug (4), the normally open contact of the micro switch (8) is disconnected, the leakage circuit breaker undervoltage release coil (6) loses power, and the power circuit breaker (2) cannot be closed; when the plug (4) is inserted into the socket (3) and pushes the stroke impact rod (11) to make the stroke impact rod (11) touch the micro switch (8), the normally open contact of the micro switch (8) is connected, the leakage circuit breaker undervoltage release coil (6) is powered on, and the power circuit breaker (2) is normally closed.

2. The socket power supply apparatus capable of preventing electric shock upon plug-in according to claim 1, wherein: The socket (3) is provided with a screw hole (18) and is fixedly connected to the threaded hole of the power socket box (1) through four screws.

3. The socket power supply apparatus capable of preventing electric shock upon plug-in according to claim 1, wherein: The socket (3) and the plug (4) are respectively provided with buckles (17), and the socket front end (14) is provided with an automatic reset cover (19).

4. A method for preventing live plug-in of a socket power supply using the socket power supply device according to claim 3, characterized by: The method for preventing the plug (4) from being live pulled out of the socket (3) comprises S11, the buckle (17) is opened, the plug (4) is provided with an external force to pull out the socket (3), so that the plug (4) is no longer pressed down stroke ram (11); S12, the stroke ram (11) is reset by the spring (10), the micro switch (8) is opened, the under voltage release coil (6) of the leakage circuit breaker is lost, and the power circuit breaker (2) is automatically tripped; The method for preventing the plug (4) from being inserted into the socket (3) includes S21, when the socket (3) is not inserted into the plug (4), the micro switch (8) is opened, the under voltage release coil (6) of the leakage circuit breaker is lost, and the power circuit breaker (2) cannot be closed; S22, provide an external force to the plug (4) to insert the socket (3), buckle (17), so that the plug (4) is pressed down stroke ram (11); S23, the stroke ram (11) touches the micro switch (8), the micro switch (8) is opened, the under voltage release coil (6) of the leakage circuit breaker is powered, and the power circuit breaker (2) is normally closed.

5. The method of claim 4, wherein: the plug is a plug of a power strip; and the plug is connected to the power strip. After the plug (4) is inserted into the socket (3), the micro switch (8) is opened, the under voltage release coil a end (601) of the leakage circuit breaker is connected with the W line, the under voltage release coil tail end (602) of the leakage circuit breaker is connected with the socket auxiliary contact connection terminal b end (901), and the socket auxiliary contact connection terminal c end (902) is connected with the N line of the power supply, so as to form a 220V electric circuit.

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