Electric leakage protection structure of electric power track

Abstract

The utility model discloses an electric leakage protection structure of an electric power track, which comprises a shell, one end of the shell is provided with a copper insert assembly used for being connected into the electric power track, the shell is internally provided with a wiring terminal assembly, and the end face, aligned with the wiring terminal assembly, of the shell is provided with a plurality of wiring through holes; an electric leakage protection device is arranged between the wiring terminal assembly and the copper insertion piece assembly, an overload protector and an anti-surge module are arranged on one side of the electric leakage protection device, and a test button and a reset button which are used for controlling the electric leakage protection device are arranged on the shell. An overload protection button used for controlling the overload protector is arranged on one side face of the shell. The above technical scheme has three functions of leakage protection, overload protection and surge protection, and is reasonable in structural design, simple in structure, convenient to use, safe, reliable and good in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of track sockets, in particular to a leakage protection structure for a power track. Background Art

[0002] A track socket comprises a power track and an adapter movably connected to the power track. The track socket sleeves in the power track are electrically connected to the wall power supply line. The adapter has a conductive sheet and a jack. When in use, the conductive sheet of the adapter is connected and matched with the track slot in the power track to realize the conduction of the adapter and the power circuit.

[0003] In the prior art, generally only a power supply module is arranged on the power track without a leakage protection function. When the incoming line and the outgoing line of the power supply are installed inside the power supply module, part of the conductors inside the wires will be exposed to the outside. When dust enters, the dust will contact the conductors on the wires. Over time, static electricity will occur, and poor contact is likely to occur. Moreover, the housing of the power supply module is mostly fastened by screws, and it is inconvenient to maintain and replace the internal components, which affects the efficiency of maintenance and replacement. At the same time, the heat generated inside the housing will age the circuit and even cause the circuit to fail, thus posing a certain danger to users. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a leakage protection structure for a power track with reasonable structure design, simple structure, convenient use, safety and reliability, and good practicability.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A leakage protection structure for a power track, comprising a housing. One end of the housing is provided with a copper insert component for accessing the power track. A wiring terminal component is arranged inside the housing. A plurality of wiring through holes are arranged on the end face of the housing aligned with the wiring terminal component. A leakage protection device is arranged between the wiring terminal component and the copper insert component. An overload protector and a surge protection module are arranged on one side of the leakage protection device. A test button and a reset button for controlling the leakage protection device are arranged on the housing. An overload protection button for controlling the overload protector is arranged on one side surface of the housing.

[0006] The utility model is further arranged as follows: The wiring terminal component comprises an L-pole wiring terminal, an N-pole wiring terminal, and a ground-pole wiring terminal; the copper insert component comprises an L-pole copper insert, an N-pole copper insert, and a grounding copper insert; the leakage protection device comprises a base, an L-pole switch, an N-pole switch, a detection unit, a leakage signal amplification unit, and an actuator;

[0007] A first connecting wire is provided between the L-pole terminal and the L-pole connection part of the overload protector, and a second connecting wire is provided between the L-pole connection part of the overload protector and the L-pole connection part of the surge protection module. A third connecting wire is provided between the grounding part of the surge protection module and the grounding copper insert;

[0008] A fourth connecting wire is provided between the N-pole terminal and the N-pole connection part of the L-pole switch, and a fifth connecting wire is provided between the L-pole connection part of the L-pole switch and the L-pole copper insert;

[0009] A sixth connecting wire is provided between the ground pole terminal and the grounding connection part of the surge protection module;

[0010] A seventh connecting wire is provided between the N-pole connection part of the overload protector and the N-pole connection part of the N-pole switch, and an eighth connecting wire is provided between the L-pole connection part of the N-pole switch and the N-pole copper insert.

[0011] The present utility model is further configured as follows: The detection unit includes a zero-sequence current transformer, the leakage signal amplification unit includes an induction magnetic ring, and the actuator includes a reset coil and a reset push rod. The leakage current is detected by the detection unit and a leakage signal is sent out. Then, the leakage signal is amplified by the leakage signal amplification unit. After receiving the leakage signal, the actuator drives the reset push rod to act under the action of magnetic force through the reset coil to switch the L-pole switch and the N-pole switch from the closed position to the open position, thereby cutting off the power supply.

[0012] The present utility model is further configured as follows: A connecting plate is provided at the end of the reset push rod away from the reset coil, and a switch driving plate is fixedly provided on the connecting plate to simultaneously drive the L-pole switch and the N-pole switch to be turned on or off through the switch driving plate.

[0013] The present utility model is further configured as follows: A button mounting hole is provided on the switch driving plate, and the lower end of the reset button is connected to the button mounting hole.

[0014] The present utility model is further configured as follows: A first button through hole is provided on the housing at the position corresponding to the test button, and a second button through hole is provided on the housing at the position corresponding to the reset button. The outer end of the test button is exposed through the first button through hole, and the outer end of the reset button is exposed through the second button through hole; An indicator light is also provided on the housing.

[0015] The beneficial effects of the present utility model are as follows: Compared with the prior art, the present utility model has a reasonable structural design. The detection element of the leakage protection device is composed of a zero-sequence current transformer, which detects the leakage current and issues a signal. The amplification link of the leakage signal amplification unit amplifies the weak leakage signal to form an electromagnetic protector. The detection unit detects the leakage current and issues a leakage signal, and then the leakage signal amplification unit amplifies the leakage signal. After receiving the leakage signal, the actuator drives the reset push rod to act through the reset coil to switch the L-pole switch and the N-pole switch from the closed position to the open position, thereby cutting off the power supply.

[0016] The present utility model has three major functions: leakage protection, overload protection, and surge protection. It has a reasonable structural design, is simple in structure, convenient to use, safe and reliable, and has good practicability.

[0017] The following further describes the present utility model in conjunction with the specification drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0019] Figure 2 It is a schematic partial structure diagram of an embodiment of the present utility model Figure 1 ;

[0020] Figure 3 It is a schematic partial structure diagram of an embodiment of the present utility model Figure 2 ;

[0021] Figure 4 It is a schematic partial structure diagram of an embodiment of the present utility model Figure 3 ;

[0022] Figure 5 It is an assembly schematic diagram of an embodiment of the present utility model and an existing power rail. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In the description of this embodiment, it should be noted that when terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, it should not be construed as a limitation to the present utility model. In addition, when terms such as "first", "second", "third" appear, they are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] See Figures 1 to 5, A leakage protection structure for a power rail disclosed by the present utility model includes a housing 1. One end of the housing 1 is provided with a copper insert component for accessing the power rail. A wiring terminal component is arranged inside the housing 1, and a plurality of wiring through holes 11 are arranged on the end face of the housing 1 that aligns with the wiring terminal component; A leakage protection device 2 is arranged between the wiring terminal component and the copper insert component. An overload protector 3 and a surge protection module 4 are arranged on one side of the leakage protection device 2. A test button 5 and a reset button 6 for controlling the leakage protection device 2 are arranged on the housing 1, and an overload protection button 7 for controlling the overload protector 3 is arranged on one side surface of the housing 1.

[0025] Preferably, the number of the wiring through holes 11 is 1 - 3, and the wiring through holes 11 are all arranged on the left end of the housing 1, and the overload protection button 7 is arranged on the left end of the housing 1. The surge protection module 4 is a surge protection circuit board.

[0026] To make the design of the present utility model more reasonable, preferably, the wiring terminal component in this embodiment includes an L - pole wiring terminal 81, an N - pole wiring terminal 82, and a ground - pole wiring terminal 83; The copper insert component includes an L - pole copper insert 91, an N - pole copper insert 92, and a grounding copper insert 93; The leakage protection device 2 includes a base 21, an L - pole switch 22, an N - pole switch 23, a detection unit, a leakage signal amplification unit, and an actuator;

[0027] A first connecting wire 120 is arranged between the L - pole wiring terminal 81 and the L - pole wiring part of the overload protector 3, and a second connecting wire 13 is arranged between the L - pole wiring part of the overload protector 3 and the L - pole wiring part of the surge protection module 4. A third connecting wire 14 is arranged between the grounding part of the surge protection module 4 and the grounding copper insert 93;

[0028] A fourth connecting wire 15 is arranged between the N - pole wiring terminal 82 and the N - pole wiring part of the L - pole switch 22, and a fifth connecting wire 16 is arranged between the L - pole wiring part of the L - pole switch 22 and the L - pole copper insert 91;

[0029] A sixth connecting wire 17 is arranged between the ground - pole wiring terminal 83 and the grounding wiring part of the surge protection module 4;

[0030] A seventh connecting wire 18 is arranged between the N - pole wiring part of the overload protector 3 and the N - pole wiring part of the N - pole switch 23, and an eighth connecting wire 19 is arranged between the L - pole wiring part of the N - pole switch 23 and the N - pole copper insert 92.

[0031] Preferably, both ends of each of the above - mentioned connecting wires are fixed by welding or fastened by screws, so that each connection part forms an electrical connection.

[0032] The detection unit includes a zero-sequence mutual inductor, the leakage signal amplifying unit includes an inductive magnetic ring 24, and the actuator includes a reset coil 25 and a reset push rod 26. The leakage current is detected by the detection unit and a leakage signal is sent out, and then the leakage signal is amplified by the leakage signal amplifying unit. After receiving the leakage signal, the actuator drives the reset push rod 26 under the action of magnetic force through the reset coil 25 to switch the L-pole switch 22 and the N-pole switch 23 from the closed position to the open position, thereby cutting off the power supply.

[0033] Preferably, the induction magnetic ring 24 is installed in the positioning groove of the base 21, and the fourth connecting wire 15 and the seventh connecting wire 18 are both arranged through the central hole of the induction magnetic ring 24. A leakage control circuit board 27 is arranged at the upper end of the base 21, and the L-pole switch 22 and the N-pole switch 23 are both electrically connected to the leakage control circuit board 27.

[0034] The reset push rod 26 is provided with a connecting plate away from the reset coil end, and a switch driving plate 10 is fixedly provided on the connecting plate. The switch driving plate 10 drives the L-pole switch 22 and the N-pole switch 23 to be turned on or off at the same time.

[0035] The switch driving board 10 is provided with a button mounting hole, and the lower end of the reset button 6 is connected to the button mounting hole. Preferably, the lower end of the reset button 6 is connected to the button mounting hole by threaded connection or screw connection.

[0036] The shell 1 is provided with a first button through hole aligned with the test button position, the shell 1 is provided with a second button through hole aligned with the reset button position, and the outer end of the test button 5 is exposed from the first button through hole, and the outer end of the reset button 6 is exposed from the second button through hole; the shell 1 is also provided with an indicator light 12.

[0037] For practical application, see Figure 5 The utility model is equipped with a power rail 100 at the right end, which can be applied to the existing power rail. The detection element of the leakage protection device is composed of a zero-sequence mutual inductor, which detects the leakage current and sends a signal. The amplification link of the leakage signal amplification unit is to amplify the weak leakage signal to form an electromagnetic protector.

[0038] Working principle: The leakage current is detected by the detection unit and a leakage signal is issued, which is then amplified by the leakage signal amplification unit. After receiving the leakage signal, the actuator drives the reset push rod 26 through the reset coil 25 to switch the L-pole switch 22 and the N-pole switch 23 from the closed position to the open position, thereby cutting off the power supply.

[0039] The utility model has three functions of leakage protection, overload protection and surge protection, and has reasonable structural design, simple structure, convenient use, safety, reliability and good practicality.

[0040] The above embodiments' specific description of the present utility model is only used to further illustrate the present utility model, and cannot be construed as a limitation on the protection scope of the present utility model. Any non-essential improvements and adjustments made by those skilled in the art to the present utility model based on the content of the above utility model fall within the protection scope of the present utility model.

Claims

1. A leakage protection structure for a power rail, comprising a housing (1), characterized in that: A copper plug assembly for connecting to a power rail is arranged at one end of the housing (1), a wiring terminal assembly is arranged inside the housing (1), and a plurality of wiring through holes (11) are arranged on the end surface of the housing (1) aligned with the wiring terminal assembly; a leakage protection device (2) is arranged between the wiring terminal assembly and the copper plug assembly, an overload protector (3) and an anti-surge module (4) are arranged on one side of the leakage protection device (2), a test button (5) and a reset button (6) for controlling the leakage protection device (2) are arranged on the housing (1), and an overload protection button (7) for controlling the overload protector (3) is arranged on one side of the housing (1).

2. The leakage protection structure of a power rail according to claim 1, characterized in that: The terminal block assembly comprises an L-pole terminal block (81), an N-pole terminal block (82) and a ground terminal block (83); the copper plug assembly comprises an L-pole copper plug block (91), an N-pole copper plug block (92) and a ground copper plug block (93); the leakage protection device (2) comprises a base (21), an L-pole switch (22), an N-pole switch (23), a detection unit, a leakage signal amplification unit and an actuator; A first connecting wire (120) is provided between the L-pole connecting terminal (81) and the L-pole connecting portion of the overload protector (3), a second connecting wire (13) is provided between the L-pole connecting portion of the overload protector (3) and the L-pole connecting portion of the surge protection module (4), and a third connecting wire (14) is provided between the grounding portion of the surge protection module (4) and the grounding copper plug (93); A fourth connecting wire (15) is provided between the N-pole connecting terminal (82) and the N-pole connecting portion of the L-pole switch (22), and a fifth connecting wire (16) is provided between the L-pole connecting portion of the L-pole switch (22) and the L-pole copper plug (91); A sixth connecting wire (17) is provided between the ground electrode terminal (83) and the grounding connection portion of the surge protection module (4); A seventh connecting wire (18) is provided between the N-pole connection part of the overload protector (3) and the N-pole connection part of the N-pole switch (23), and an eighth connecting wire (19) is provided between the L-pole connection part of the N-pole switch (23) and the N-pole copper plug (92).

3. The leakage protection structure of a power rail according to claim 2, characterized in that: The detection unit comprises a zero-sequence mutual inductor, the leakage signal amplifying unit comprises an inductive magnetic ring (24), and the actuator comprises a reset coil (25) and a reset push rod (26). The detection unit detects leakage current and sends out a leakage signal, which is then amplified by the leakage signal amplifying unit. After receiving the leakage signal, the actuator drives the reset push rod (26) under the action of magnetic force through the reset coil (25) to switch the L-pole switch (22) and the N-pole switch (23) from a closed position to an open position, thereby cutting off the power supply.

4. The leakage protection structure of a power rail according to claim 3, characterized in that: The reset push rod (26) is provided with a connection plate at the end away from the reset coil, and a switch drive plate (10) is fixedly provided on the connection plate. The switch drive plate (10) drives the L-pole switch (22) and the N-pole switch (23) to be turned on or off at the same time.

5. The leakage protection structure of a power rail according to claim 4, characterized in that: The switch drive plate (10) is provided with a button mounting hole, and the lower end of the reset button (6) is connected to the button mounting hole.

6. The leakage protection structure of a power rail according to claim 5, characterized in that: The housing (1) is provided with a first button through hole aligned with the position of the test button, the housing (1) is provided with a second button through hole aligned with the position of the reset button, the outer end of the test button (5) is exposed from the first button through hole, and the outer end of the reset button (6) is exposed from the second button through hole; an indicator light (12) is also provided on the housing (1).

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