Plug converter for circuit test

Abstract

The utility model discloses a plug converter for circuit testing, and aims to provide a plug converter for circuit testing, which can display circuit conditions, enhance structural connection efficiency and leakproofness and improve use safety. The plug converter comprises a mounting box which is arranged in the middle of the plug converter and is of a detachable structure; the connecting and positioning assembly is connected with the mounting box; the sealing assembly is connected with the mounting box; the circuit board is arranged in the mounting box and is detachably connected with the mounting box; the indicating lamp is arranged on the mounting box and is electrically connected with the circuit board; the lightning protection assembly is arranged in the mounting box and is electrically connected with the circuit board; the conversion socket assembly and the mounting box are connected with an overload protector assembly; and the circuit board and the overload protector assembly are electrically connected with the changeover plug assembly. The beneficial effects of the utility model are that high-efficiency circuit detection of a product is realized; maintenance is convenient; and stable line installation is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit test technical field especially points to a plug converter for circuit test. BACKGROUND

[0002] The plug and the socket are the most common circuit connecting pieces in our daily life, with the continuous progress and development of the times, the modern society is more and more inseparable from the electrical equipment, and the plug and the socket become an indispensable part on the electrical equipment, which brings a lot of convenience to people's electrical life, and the internal phase line of the electrical equipment is connected in reverse when using electricity, which will affect normal use and even cause safety accidents, so it is necessary to test the circuit of the product by the circuit test equipment, and the plug converter is converted to adapt to the power plug of different products and the test equipment.

[0003] Chinese patent authorized announcement number: CN215343298U, authorized announcement date: December 28, 2021, the utility model relates to a lightning protection converter, which aims to provide a lightning protection converter that is easy to use and convenient to install. It comprises an upper shell, a lower shell, the upper shell and the lower shell are clamped, the lower shell is connected with a plug, one end of the plug is located between the upper shell and the lower shell, the other end of the plug is suspended after passing through the lower shell, the lower shell is internally provided with an indicator light, a lightning protection light and a lightning protection assembly, the lightning protection assembly is electrically connected with the indicator light and the lightning protection light, and the upper shell and the lower shell are provided with a plurality of force convex strips on the side surfaces. The technical scheme has the following disadvantages: it is difficult to display the circuit condition of the product to be converted, which affects the safety of product use; 2. The connection efficiency between the shell structures is low and the tightness is poor, and the internal electrical elements are easily damaged.

[0004] In summary: the converter has the disadvantages of difficult to display the circuit condition, low connection efficiency and poor tightness affecting the safety of use. UTILITY MODEL CONTENT

[0005] The utility model discloses in order to overcome the prior art converter difficult to detect and display the circuit condition, the structure connection efficiency and the low tightness affect the shortage of use safety, provides a kind of plug converter for circuit test that can display circuit condition, enhance structure connection efficiency and tightness to improve the use safety.

[0006] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A plug converter for circuit test, comprising:

[0008] The mounting box is arranged in the middle of the plug converter, and the mounting box is a detachable structure.

[0009] The connecting and positioning assembly is connected with the mounting box.

[0010] A sealing assembly is connected with the mounting box.

[0011] A circuit board is arranged in the mounting box and detachably connected with the mounting box.

[0012] An indicator lamp is arranged on the mounting box and electrically connected with the circuit board.

[0013] A lightning protection assembly is arranged in the mounting box and electrically connected with the circuit board.

[0014] A conversion socket assembly is arranged outside the mounting box and connected with the end of the mounting box, the mounting box is connected with an overload protector assembly, and the circuit board and the overload protector assembly are electrically connected with the conversion socket assembly.

[0015] A conversion plug assembly is arranged outside the mounting box and connected with the end of the mounting box, and the circuit board and the overload protector assembly are electrically connected with the conversion plug assembly.

[0016] The mounting box is connected with the conversion plug assembly at one end and the conversion socket assembly at the other end in the middle of the plug converter, the power plug of the product to be tested is connected with the conversion socket assembly of the plug converter, and then the conversion plug assembly of the plug converter is electrically connected with the test equipment for circuit detection, so as to realize circuit detection and safety judgment. The circuit board in the mounting box is connected with the circuit of the conversion socket assembly and the conversion plug assembly, the lightning protection assembly is integrated on the circuit board to ensure and prolong the service life and safety, in addition, the mounting box is connected with the overload protector assembly, the overload protector assembly adopts a manual reset type overload protector, and the protection of the circuit is realized through the electrical connection with the conversion socket assembly and the conversion plug assembly to prevent the circuit from being overloaded during testing, and the protector can be manually reset to further improve the test safety; the mounting box itself is a detachable structure and is positioned, installed and fixed through the connecting positioning assembly to ensure the stability of the circuit, and the connecting positioning assembly is used for disassembly and separation to facilitate the maintenance and replacement of electrical elements in the later period, so as to realize efficient disassembly and maintenance of the plug converter; the mounting box is connected in a sealed manner through the sealing assembly after installation to prevent dust and water, ensure test safety and efficiency; the indicator lamp is fixed and installed on the mounting box through the electrical connection with the circuit board to quickly display the circuit detection result. The plug converter has the effects of efficient circuit detection of the product, high installation and disassembly efficiency of the plug converter to facilitate maintenance and ensure stable circuit installation, high sealing property to prevent dust and water, and long service life and test safety of the plug converter.

[0017] As preferred, the connecting positioning assembly comprises a fixing column and a connecting column, the installation box comprises a placing shell and a cover plate, the cover plate is provided with a recess, the placing shell is provided with a placing cavity, the placing cavity is connected with the fixing column, the recess is connected with the connecting column, the placing cavity is connected with the fixing column, the recess is connected with the connecting column, the fixing column is inserted with the connecting column, the fixing column is provided with a connecting screw hole one, the connecting column is inserted with a fixing screw one, and the fixing screw one is screwed with the connecting screw hole one. The cover plate in the installation box is provided with a recessed recess to place and install the connecting column, and the placing shell is provided with a placing cavity to position and place the circuit board, the lightning protection assembly and the overload protector assembly and other structures, and the fixing screw one on the connecting column is screwed with the connecting screw hole one through the fixing column, so that the placing shell and the cover plate are fixedly connected, the installation box is closed and fixed, and the installation box is also convenient for quick disassembly. The fixing column and the connecting column are arranged in several groups, and the installation box is prevented from being misaligned through one-to-one connection. The installation box is convenient for disassembly and maintenance, and the internal structure is protected.

[0018] As preferred, the sealing assembly comprises a sealing ring, the end surface of the placing shell is provided with a connecting recess, the end surface of the cover plate is provided with a connecting convex ring, the connecting convex ring is clamped with the connecting recess, and the sealing ring is embedded with the connecting recess. The placing shell is provided with a recessed connecting recess at the port of the placing cavity, the cover plate is connected with the corresponding connecting convex ring at the end surface of the recessed recess, the connecting convex ring and the connecting recess are clamped to position and connect the placing shell and the cover plate, and the placing shell and the cover plate are prevented from being misaligned. The sealing ring in the connecting recess is pressed tightly by the connecting convex ring, so that the placing shell and the cover plate are pressed tightly and sealed after being fixed by the fixing screw one, dust and liquid are prevented from entering to affect the circuit. The connecting efficiency and precision of the placing shell and the cover plate are improved, and the sealing performance is further enhanced.

[0019] As preferred, the connecting positioning assembly comprises a positioning column, the placing cavity is connected with a lamp holder, the lamp holder is provided with a plurality of lamp grooves, the indicator lamp is clamped with the lamp groove, the indicator lamp comprises an indicator lamp one, an indicator lamp two, an indicator lamp three and a voltage alarm lamp, the indicator lamp one, the indicator lamp two and the indicator lamp three are electrically connected with the circuit board, the positioning column is connected with the placing cavity, the positioning column is provided with a connecting screw hole two, the circuit board is inserted with a fixing screw two, and the fixing screw two is screwed with the connecting screw hole two. The placing cavity is connected with three indicator lamps and a voltage alarm lamp, the three indicator lamps and the voltage alarm lamp are connected one by one through the lamp grooves on the lamp holder and are electrically connected with the circuit board to indicate the circuit connection condition and the voltage condition. The circuit board is fixed on the positioning column in the placing cavity through the inserted fixing screw two, so that the fixing screw two is screwed with the connecting screw hole two to prevent the circuit board from moving in the placing cavity and causing the circuit to be disconnected and unable to detect and display the circuit condition. The circuit board connection and positioning stability are enhanced, and the detection and display stability is ensured.

[0020] As preferred, the overload protector assembly is placed in the placing cavity, the placing shell is provided with a through hole, and the overload protector assembly is clamped with the through hole. The overload protector assembly is connected in the placing cavity and the manually operated reset part is connected through the through hole and connected, so that the internal overload protector assembly is fixed as a whole on the plug converter, and the operation reset is facilitated. The effect of ensuring the operation convenience and connection stability of the overload protector assembly is achieved.

[0021] As preferred, the placing shell is provided with a lower clamping seat one, the cover plate is provided with a lower clamping seat two, the lower clamping seat one and the lower clamping seat two are both provided with a wire inlet hole one, the conversion socket assembly includes a wire protection sleeve one, a socket shell and a conductive clamp piece, one end of the wire protection sleeve one is inserted with the wire inlet hole one, the other end of the wire protection sleeve one is connected with the socket shell, and the conductive clamp piece is electrically connected with the circuit board and the overload protector assembly. The same end of the placing shell is connected with the lower clamping seat one with the wire inlet hole one, and the same end of the cover plate is connected with the lower clamping seat two with the wire inlet hole one, so that the wire protection sleeve one in the conversion socket assembly is connected through the wire inlet hole one, so as to protect the internal connection of the conductive clamp piece and the line into the installation box. The socket shell protects the conductive clamp piece and is connected with the wire protection sleeve one, so that the plug of the product to be tested can be smoothly electrically connected with the conductive clamp piece. The effect of ensuring the connection stability of the conversion socket assembly and the installation box is achieved.

[0022] As preferred, the placing shell is provided with an upper clamping seat one, the cover plate is provided with an upper clamping seat two, the upper clamping seat one and the upper clamping seat two are both provided with a wire inlet hole two, the conversion plug assembly includes a wire protection sleeve two, a plug shell and a conductive plug pin, one end of the wire protection sleeve two is inserted with the wire inlet hole two, the other end of the wire protection sleeve two is connected with the plug shell, and the conductive plug pin is electrically connected with the circuit board and the overload protector assembly. The other end of the placing shell is connected with the upper clamping seat one with the wire inlet hole two, and the same end of the cover plate is connected with the upper clamping seat two with the wire inlet hole two, so that the wire protection sleeve two in the conversion plug assembly is connected through the wire inlet hole two, so as to protect the internal connection of the conductive plug pin and the line into the installation box. The plug shell protects the conductive plug pin and is connected with the wire protection sleeve two, so that the plug of the plug converter can be electrically connected with the test equipment. The effect of ensuring the connection stability of the conversion plug assembly and the installation box is achieved.

[0023] As preferred, the sealing assembly comprises a sealing seat, the hole walls of the wire inlet hole one and the wire inlet hole two are provided with limiting clamping grooves, the wire protection sleeve one and the wire protection sleeve two are sleeved with the sealing seat, the sealing seat is embedded with the limiting clamping grooves, the upper clamping seat one is inserted with the fixed screw three, the upper clamping seat two is provided with the connecting screw hole three, the fixed screw three is threadedly connected with the connecting screw hole three, the lower clamping seat one is inserted with the fixed screw four, the lower clamping seat two is provided with the connecting screw hole four, and the fixed screw four is threadedly connected with the connecting screw hole four. The hole walls of the wire inlet hole one and the wire inlet hole two are embedded with the sealing seat through the limiting clamping grooves, so that the sealing seat is tightly combined through the limiting clamping grooves when the placing shell and the cover plate are connected, and is secondarily tightly combined through the fixed screw four, thereby preventing the wire protection sleeve one and the wire protection sleeve two from being separated from the installation box, further ensuring the stable connection of the inner wall of the line, and simultaneously achieving the sealing effect. The effect of enhancing the protection and the connection stability of the line is achieved.

[0024] The utility model discloses the beneficial effects are: realize the high efficiency circuit detection of product, the installation and dismounting efficiency of plug converter are high to facilitate maintenance and guarantee line installation stability, have high sealing and prevent dust and waterproof, improve the service life and test security of plug converter, improve the precision of placing shell and cover plate, the connection of structure is stable, and the protection of line is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the perspective drawing of the utility model;

[0026] Figure 2 It is Figure 1 the explosion drawing of

[0027] Figure 3 It is the connection schematic drawing of connecting positioning assembly and sealing assembly and installation box;

[0028] Figure 4 It is the connection schematic drawing of sealing assembly and installation box;

[0029] Figure 5 It is the connection schematic drawing of upper clamping seat one and upper clamping seat two, lower clamping seat one and lower clamping seat two;

[0030] Figure 6 It is the indicating lamp arrangement schematic drawing.

[0031] As shown in the figure, 1 is the installation box, 2 is the circuit board, 3 is the indicator light, 4 is the lightning protection assembly, 5 is the conversion socket assembly, 6 is the overload protector, 7 is the conversion plug assembly, 8 is the placing shell, 9 is the cover plate, 10 is the groove, 11 is the placing cavity, 12 is the fixing column, 13 is the connecting column, 14 is the first fixing screw, 15 is the positioning column, 16 is the second fixing screw, 17 is the through hole, 18 is the lower clamping base one, 19 is the lower clamping base two, 20 is the wire inlet hole one, 21 is the wire protection sleeve one, 22 is the socket shell, 23 is the conductive clamping piece, 24 is the upper clamping base one, 25 is the upper clamping base two, 26 is the wire inlet hole two, 27 is the wire protection sleeve two, 28 is the plug shell, 29 is the conductive plug pin, 30 is the limiting clamping groove, 31 is the sealing seat, 32 is the third fixing screw, 33 is the fourth fixing screw, 34 is the connecting convex ring, 35 is the sealing ring, 36 is the lamp holder, 37 is the connecting groove, and 38 is the handle. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative work are within the scope of protection of the present application.

[0033] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or combinations thereof.

[0034] The relative arrangement of parts, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless specifically stated otherwise. For ease of illustration, spatially relative terms such as "upper", "lower", "left", "right", and the like are used in the examples to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or located in any other orientation) and the spatially relative terms used herein interpreted accordingly. It will also be understood that the dimensions of the various parts shown in the figures are not to scale and that the dimensions of the parts can be arbitrarily increased or decreased for the ease of illustration and description. Techniques, processes, and apparatuses known to one of ordinary skill in the relevant art can not be discussed in detail in that they can be generally understood. In all examples shown and discussed herein, any specific value should be interpreted as merely an example and not a limitation. Thus, other examples of the exemplary embodiments can have different values. It should be noted that like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0035] In addition, it should be noted that the use of the terms "first", "second", etc., to describe a component having a certain name does not have a special meaning and should not be construed as limiting the scope of the present application unless otherwise stated. Embodiment

[0036] As shown in Figure 1 , 2 , 4, 5, a plug converter for circuit testing comprises:

[0037] A mounting box 1 is arranged at the middle of the plug converter, and the mounting box 1 is of a detachable structure;

[0038] A connecting and positioning assembly is connected with the mounting box 1;

[0039] A sealing assembly is connected with the mounting box 1;

[0040] A circuit board 2 is arranged in the mounting box 1 and detachably connected with the mounting box 1;

[0041] An indicating lamp 3 is arranged on the mounting box 1 and electrically connected with the circuit board 2;

[0042] The lightning protection assembly 4 is arranged in the mounting box 1 and electrically connected with the circuit board 2.

[0043] The conversion socket assembly 5 is arranged outside the mounting box 1 and connected with the end of the mounting box 1, the mounting box 1 is connected with the overload protector assembly 6, and the circuit board 2 and the overload protector assembly 6 are electrically connected with the conversion socket assembly 5.

[0044] The conversion plug assembly 7 is arranged outside the mounting box 1 and connected with the end of the mounting box 1, and the circuit board 2 and the overload protector assembly 6 are electrically connected with the conversion plug assembly 7.

[0045] As shown in Figure 2 , 3 , the mounting box 1 comprises a placing shell 8 and a cover plate 9, the cover plate 9 is provided with a recess 10, the placing shell 8 is provided with a placing cavity 11, the placing cavity 11 is connected with a fixing column 12, the recess 10 is connected with a connecting column 13, the fixing column 12 is inserted with the connecting column 13, the fixing column 12 is provided with a connecting screw hole one, the connecting column 13 is inserted with a fixing screw rod one 14, and the fixing screw rod one 14 is threadedly connected with the connecting screw hole one.

[0046] As shown in Figure 3 , the end surface of the placing shell 8 is provided with a connecting recess 37, the end surface of the cover plate 9 is provided with a connecting convex ring 34, the connecting convex ring 34 is clamped with the connecting recess 37, and the connecting recess 37 is embedded with a sealing ring 35.

[0047] As shown in Figure 2 , the placing cavity 11 is connected with a lamp holder 36, the lamp holder 36 is provided with a plurality of lamp grooves, the indicator lamp 3 is clamped with the lamp grooves, the indicator lamp 3 comprises an indicator lamp one, an indicator lamp two, an indicator lamp three and a voltage alarm lamp, the indicator lamp one, the indicator lamp two and the indicator lamp three are electrically connected with the circuit board 2, the placing cavity 11 is provided with a positioning column 15, the positioning column 15 is provided with a connecting screw hole two, the circuit board 2 is inserted with a fixing screw rod two 16, and the fixing screw rod two 16 is threadedly connected with the connecting screw hole two. The overload protector assembly 6 is arranged in the placing cavity 11, the placing shell 8 is provided with a through hole 17, and the overload protector assembly 6 is clamped with the through hole 17.

[0048] As shown in Figure 1 , 2 , the placing shell 8 is provided with a lower clamping seat one 18, the cover plate 9 is provided with a lower clamping seat two 19, the lower clamping seat one 18 and the lower clamping seat two 19 are both provided with a wire inlet hole one 20, the conversion socket assembly 5 comprises a wire protection sleeve one 21, a socket shell 22 and a conductive clamping piece 23, one end of the wire protection sleeve one 21 is inserted with the wire inlet hole one 20, the other end of the wire protection sleeve one 21 is connected with the socket shell 22, and the conductive clamping piece 23 is electrically connected with the circuit board 2 and the overload protector assembly 6.

[0049] As shown in Figure 1 , 2As shown, the placing shell 8 is provided with an upper clamping seat one 24, the cover plate 9 is provided with an upper clamping seat two 25, the upper clamping seat one 24 and the upper clamping seat two 25 are both provided with a wire inlet hole two 26, the conversion plug assembly 7 includes a wire protection sleeve two 27, a plug shell 28 and a conductive plug 29, one end of the wire protection sleeve two 27 is inserted with the wire inlet hole two 26, the other end of the wire protection sleeve two 27 is connected with the plug shell 28, and the conductive plug 29 is electrically connected with the circuit board 2 and the overload protector assembly 6.

[0050] As shown in Figures 2-5 , the hole walls of the wire inlet hole one 20 and the wire inlet hole two 26 are both provided with a limiting clamping groove 30, the wire protection sleeve one 21 and the wire protection sleeve two 27 are both sleeved with a sealing seat 31, the sealing seat 31 is embedded with the limiting clamping groove 30, the upper clamping seat one 24 is inserted with a fixed screw three 32, the upper clamping seat two 25 is provided with a connecting screw hole three, the fixed screw three 32 is threadedly connected with the connecting screw hole three, the lower clamping seat one 18 is inserted with a fixed screw four 33, the lower clamping seat two 19 is provided with a connecting screw hole four, and the fixed screw four 33 is threadedly connected with the connecting screw hole four.

[0051] As shown in Figures 1-6 : the indicating lamp 3 is connected in the lamp groove and connected with a conductive wire (not shown in the figure), the conductive wire passes through the lamp groove and is connected with the circuit board 2, the lamp groove is provided with sealing glue to fix the indicating lamp 3, the overload protector 6 adopts an existing overload protection device with a manual reset button, the manual reset button passes through the through hole 17 and is placed on the end face of the mounting box 1 to facilitate pressing, the through hole 17 is provided with sealing glue to seal the connection to prevent liquid from entering the mounting box 1.

[0052] The socket shell 22 is provided with a live wire socket, a zero wire socket and a ground wire socket, the live wire socket, the zero wire socket and the ground wire socket are all correspondingly provided with a conductive clamping piece 23, the conductive clamping piece 23 is connected with a conductive wire and is connected and integrated with the circuit board 2, the conductive plug 29 includes a live wire plug, a zero wire plug and a ground wire plug, the live wire plug, the zero wire plug and the ground wire plug are connected with a conductive wire and are connected and integrated with the circuit board 2, the indicating lamp one, the indicating lamp two and the indicating lamp three in the indicating lamp respectively form corresponding polarity detection with the corresponding conductive clamping piece 23 and the conductive plug 29 to display the circuit state.

[0053] The socket shell 22 and the plug shell 28 are both connected with a handle 38 to facilitate plugging and prevent dropping.

[0054] During detection: the power plug of the product to be tested is inserted with the conversion socket assembly 5, the conversion plug assembly 7 is connected with a test device (not shown in the figure) to perform corresponding circuit connection test, and circuit qualified products and circuit problem products are distinguished. Among them, the test display of the indicating lamp 3 is as shown in Figure 6 (from left to right: voltage indicating lamp, indicating lamp one, indicating lamp two and indicating lamp three):

[0055] (1) polarity is correct: indicator light one (green light), indicator light three (green light) is lit;

[0056] (2) no power supply: all four indicator lights are not lit;

[0057] (3) ground circuit break: indicator light one (green light) is lit;

[0058] (4) zero line circuit break: indicator light one (green light) is lit, indicator light two (red light) is lit, indicator light three is lit;

[0059] (5) L / N reverse polarity: indicator light one (green light) is lit, indicator light two (red light) is lit;

[0060] (6) L / N reverse polarity and N circuit break: indicator light two (red light) is lit, indicator light three (green light) is lit;

[0061] (7) polarity is correct, low voltage, voltage ≤ 106V: voltage indicator light (red light) is lit, indicator light one (green light) is lit, indicator light three (green light) is lit;

[0062] (8) polarity is correct, high voltage, voltage ≤ 106V: voltage indicator light (red light) flashes, indicator light one (green light) is lit, indicator light three (green light) is lit.

[0063] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A plug converter for circuit testing, characterized in that The utility model relates to a plug converter, including: The installation box (1) is arranged in the middle part of the plug converter, and the installation box (1) is detachable structure; The connecting and positioning assembly is connected with the installation box (1); The sealing assembly is connected with the installation box (1); The circuit board (2) is arranged in the installation box (1) and is detachably connected with the installation box (1); The indicating lamp (3) is arranged on the installation box (1) and is electrically connected with the circuit board (2); The lightning protection assembly (4) is arranged in the installation box (1) and is electrically connected with the circuit board (2); The conversion socket assembly (5) is arranged outside the installation box (1) and is connected with the end of the installation box (1), the installation box (1) is connected with the overload protector assembly (6), and the circuit board (2) and the overload protector assembly (6) are electrically connected with the conversion socket assembly (5); The conversion plug assembly (7) is arranged outside the installation box (1) and is connected with the end of the installation box (1), and the circuit board (2) and the overload protector assembly (6) are electrically connected with the conversion plug assembly (7).

2. A plug converter for circuit testing according to claim 1, characterized in that The connecting and positioning assembly includes the fixed column (12) and the connecting column (13), the installation box (1) includes the placing shell (8) and the cover plate (9), the cover plate (9) is equipped with the recess (10), the placing shell (8) is equipped with the placing cavity (11), the placing cavity (11) is connected with the fixed column (12), the recess (10) is connected with the connecting column (13), the fixed column (12) is inserted with the connecting column (13), the fixed column (12) is equipped with the connecting screw hole one, the connecting column (13) is inserted with the fixed screw rod one (14), and the fixed screw rod one (14) is screwed with the connecting screw hole one.

3. A plug converter for circuit testing according to claim 2, characterized in that The sealing assembly includes the sealing ring (35), the end surface of the placing shell (8) is equipped with the connecting recess (37), the end surface of the cover plate (9) is equipped with the connecting convex ring (34), the connecting convex ring (34) is clamped with the connecting recess (37), and the sealing ring (35) is embedded with the connecting recess (37).

4. A plug converter for circuit testing according to claim 2 or 3, characterized in that The connecting and positioning assembly includes the positioning column (15), the placing cavity (11) is connected with the lamp holder (36), the lamp holder (36) is equipped with a plurality of lamp grooves, the indicating lamp (3) is clamped with the lamp groove, the indicating lamp (3) includes the indicating lamp one, the indicating lamp two, the indicating lamp three and the voltage alarm lamp, the indicating lamp one, the indicating lamp two and the indicating lamp three are electrically connected with the circuit board (2), the positioning column (15) is connected with the placing cavity (11), the positioning column (15) is equipped with the connecting screw hole two, the circuit board (2) is inserted with the fixed screw rod two (16), and the fixed screw rod two (16) is screwed with the connecting screw hole two.

5. A plug converter for circuit testing according to claim 4, characterized in that The overload protector assembly (6) is placed in the placing cavity (11), the placing shell (8) is equipped with the through hole (17), and the overload protector assembly (6) is clamped with the through hole (17).

6. A plug converter for circuit testing according to claim 5, characterized in that The placing shell (8) is equipped with a lower clamping seat one (18), the cover plate (9) is equipped with a lower clamping seat two (19), the lower clamping seat one (18) and the lower clamping seat two (19) are equipped with a wire inlet hole one (20), the conversion socket assembly (5) includes a wire protection sleeve one (21), a socket shell (22) and a conductive clamp (23), one end of the wire protection sleeve one (21) is inserted with the wire inlet hole one (20), the other end of the wire protection sleeve one (21) is connected with the socket shell (22), the conductive clamp (23) is electrically connected with the circuit board (2) and the overload protector assembly (6).

7. A plug converter for circuit testing according to claim 6, characterized in that The placing shell (8) is equipped with an upper clamping seat one (24), the cover plate (9) is equipped with an upper clamping seat two (25), the upper clamping seat one (24) and the upper clamping seat two (25) are equipped with a wire inlet hole two (26), the conversion plug assembly (7) includes a wire protection sleeve two (27), a plug shell (28) and a conductive pin (29), one end of the wire protection sleeve two (27) is inserted with the wire inlet hole two (26), the other end of the wire protection sleeve two (27) is connected with the plug shell (28), the conductive pin (29) is electrically connected with the circuit board (2) and the overload protector assembly (6).

8. A plug converter for circuit testing according to claim 7, characterized in that The sealing assembly includes a sealing seat (31), the hole wall of the wire inlet hole one (20) and the wire inlet hole two (26) is equipped with a limiting clamping groove (30), the wire protection sleeve one (21) and the wire protection sleeve two (27) are sleeved with the sealing seat (31), the sealing seat (31) is embedded with the limiting clamping groove (30), the upper clamping seat one (24) is inserted with a fixed screw three (32), the upper clamping seat two (25) is equipped with a connecting screw hole three, the fixed screw three (32) is screw connected with the connecting screw hole three, the lower clamping seat one (18) is inserted with a fixed screw four (33), the lower clamping seat two (19) is equipped with a connecting screw hole four, the fixed screw four (33) is screw connected with the connecting screw hole four.

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