AC test terminal and AC test terminal combination structure

Abstract

The present invention discloses an AC test terminal and an AC test terminal combination structure, wherein the AC test terminal comprises: a base, comprising a first shell, a first conductor and a second conductor; the first conductor and the second conductor are installed in the first shell; the first conductor has an input port and a first connection port; the second conductor has a second connection port and a plug-in port; and a plug-in terminal, which can be detachably installed on the base, comprising a second shell and a third conductor; the third conductor has a conductive column and an output port; and a bridging terminal, which can be detachably installed on the base, and is used to connect the first conductor and the second conductor. The AC test terminal combination structure comprises a plurality of the above-mentioned AC test terminals arranged side by side; the AC test terminal of the present invention has the advantages of simple later maintenance, simple and quick replacement of external connection equipment, good flexibility, good expansibility and taking into account various types of protection devices.

Description

Technical Field

[0001] The invention relates to the field of wiring terminals, in particular to an AC test wiring terminal and an AC test wiring terminal combination structure. Background Art

[0002] Terminal blocks are an indispensable key link in electrical systems. They connect wires and cables like a bridge, carrying the heavy responsibility of transmitting current, signals and data, and are the basis for ensuring the stable operation of the entire electrical system. In modern industry, civil and even high-tech fields, the performance and design of terminal blocks directly affect the safety, reliability and efficiency of electrical systems.

[0003] The wiring terminals and their combination structures widely used in the current market mostly follow the design principle of fixedly connecting external cables at one end and closely connecting to various protective devices at the other end. This direct and clear connection method does bring convenience in the initial installation, but with the rapid advancement of electrical technology and the continuous improvement of the complexity of electrical systems, its limitations are becoming increasingly prominent.

[0004] The primary problem is the lack of flexibility and scalability. The development of electrical systems is often accompanied by an increase in the types of equipment, diversification of specifications, and complication of functions, which requires that the terminal blocks must have a high degree of adaptability and compatibility. However, the existing terminal block design can often only meet the connection requirements between specific types of cables and protective devices, and is unable to cope with the access of cables of different specifications and standards or new protective devices. This "one-size-fits-all" design approach not only increases the difficulty of the initial design and installation of the electrical system, but also sets up many obstacles in the subsequent upgrade and expansion of the system, resulting in increased maintenance costs and reduced system flexibility.

[0005] Secondly, the complexity of later maintenance and replacement has become another major pain point. In the life cycle of the electrical system, the replacement of protective devices is the norm, but this process is often accompanied by tedious wiring and rewiring. The staff needs to disconnect all connections between the old protective devices and the wiring terminals one by one, and then reconnect the new protective devices to the wiring terminals one by one. This is not only time-consuming and labor-intensive, but also inefficient. In addition, any carelessness during the operation may cause safety hazards such as short circuits and open circuits, posing a threat to the stable operation of the electrical system. Summary of the invention

[0006] In order to overcome the deficiencies in the prior art, the present invention provides an AC test terminal and an AC test terminal combination structure, which have the advantages of high flexibility and expansibility.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] An AC test terminal comprises: a base, comprising a first housing, a first conductor and a second conductor; the first conductor and the second conductor are installed in the first housing; the first conductor has an input port and a first connection port; the input port is used to connect to a cable; the second conductor has a second connection port and a plug port;

[0009] The plug-in terminal is detachably mounted on the base, and comprises a second housing and a third conductor; the third conductor is mounted in the second housing; the third conductor has a conductive column and an output port; the conductive column is adapted to the plug-in port; the output port is used to connect to an external device;

[0010] The bridging terminal is detachably mounted on the base, used to connect the first conductor and the second conductor and has a pair of bridging posts; the pair of bridging posts are respectively adapted to the first connection port and the second connection port.

[0011] By adopting the above technical solution, the plug-in terminal and the base are separated, so that the plug-in terminal and the base can be quickly plugged in and out. On the one hand, the output port of the plug-in terminal is adapted to the wiring scheme of different protection devices, and different protection devices can be connected to the same base through the plug-in terminal, which improves the flexibility and scalability of the AC test terminal; on the other hand, the protection device can be pre-connected with the plug-in terminal, which effectively avoids the complex and time-consuming rewiring work on site, greatly improves the work efficiency of installation and maintenance, and reduces the manpower and time cost. In addition, when the AC test terminal needs to be maintained, repaired or replaced, the connection between the first connection port and the second connection port can be disconnected by pulling out the bridge terminal, and the second conductor of the base and the plug-in terminal connected thereto can be quickly and safely placed in a power-free state. The convenience and safety of on-site operation and maintenance are greatly improved. On the one hand, it avoids the risk of electric shock caused by accidentally touching the live part during the maintenance process, and provides a safer working environment for the operation and maintenance personnel; on the other hand, since no additional power-off operation or complex safety measures are required, the efficiency of maintenance work has also been significantly improved.

[0012] Optionally, the first conductor has a first short-circuit interface; the third conductor has a second short-circuit interface; the first short-circuit interface and the second short-circuit interface are used for circuit short-circuiting.

[0013] By adopting the above technical solution, the short-circuiting operation of the base of different AC test terminals can be quickly realized through the first short-circuit interface, and the short-circuiting operation of the plug-in terminals of different AC test terminals can be quickly realized through the second short-circuit interface. When circuit testing, debugging or temporary connection is required, the operation time is significantly shortened and work efficiency is improved.

[0014] Optionally, the second conductor has a first conductive part; the plug-in port is located on the top surface of the first conductive part; a mounting part for accommodating the first conductive part is formed on the top of the first shell; a positioning groove for inserting the mounting part is formed on the bottom surface of the second shell; and the conductive column is located in the positioning groove.

[0015] By adopting the above technical solution, the mounting part cooperates with the first conductive part to realize the connection between the first shell and the second shell, and at the same time plays a connecting guide role between the conductive column and the plug interface, so that the connection between the conductive column and the plug interface is faster, more accurate and more stable, thereby improving the efficiency and stability of current transmission.

[0016] Optionally, the length of the conductive column in the positioning groove is smaller than the depth of the positioning groove.

[0017] By adopting the above technical solution, physical isolation from the external environment is achieved. This isolation reduces the chance of people directly contacting the conductive poles, thereby reducing the risk of electric shock.

[0018] Optionally, the first shell extends upward to form a bridge slot; the bridge terminal has a bridge terminal body adapted to the bridge slot.

[0019] By adopting the above technical solution, the bridge slot and the bridge terminal body of the bridge terminal cooperate with each other, so that the connection between the bridge terminal and the first conductor and the second conductor is more stable, thereby improving the efficiency and stability of current transmission.

[0020] Optionally, the bottom of the bridge slot protrudes upward to form a positioning block; and a positioning groove matched with the positioning block is formed on the bottom surface of the bridge terminal body.

[0021] By adopting the above technical solution, the positioning groove and the positioning block cooperate to make the position between the bridge terminal and the first shell more accurate and stable, so that the bridge terminal is connected to the first conductor and the second conductor, thereby improving the efficiency and stability of current transmission.

[0022] Optionally, two ends of the bridging terminal body are provided with connecting clamping plates; and two side walls of the bridging clamping slot are formed with clamping blocks that cooperate with the connecting clamping plates.

[0023] By adopting the above technical solution, the connection between the connecting card plate and the card block makes the connection between the bridging terminal and the first housing more stable and convenient for disassembly.

[0024] An AC test terminal assembly structure comprises a plurality of the above-mentioned AC test terminals arranged side by side, a first cover plate and a second cover plate; the first housing comprises a first main housing, one side of the first main housing is provided with a first placement groove and a second placement groove; one side of the first placement groove is opened to form a first installation opening, and the first conductor is installed in the first placement groove through the first installation opening; one side of the second placement groove is opened to form a second installation opening, and the second conductor is installed in the second placement groove through the second installation opening, and the first main housing adjacent to the first main housing closes the first installation opening and the second installation opening; the first placement groove and the second placement groove of the first main housing at the most side are closed by the first cover plate;

[0025] The second shell includes a second main shell; a third mounting groove is provided on one side of the second main shell, one side of the third mounting groove is opened to form a third mounting opening, the third conductor is installed in the third mounting groove through the third mounting opening, and the second main shell adjacent to the second main shell closes the third mounting opening; the third mounting groove of the second main shell at the outermost side is closed by the second cover plate.

[0026] By adopting the above technical solution, it can be flexibly combined according to actual conditions to improve its adaptability; at the same time, part of the first cover plate and the second cover plate are omitted to save costs and reduce the overall length of the AC test terminal combination structure.

[0027] Optionally, a guide rail is also included; a slide groove adapted to the guide rail is provided at the bottom of the first shell.

[0028] By adopting the above technical solution, the AC test terminal is connected to the guide rail through the slide groove of the first housing, and is convenient for assembly and disassembly.

[0029] Optionally, adjacent second main shells are connected by snap-fitting.

[0030] By adopting the above technical solution, adjacent AC test terminals are connected by snap-fitting, and the AC test terminals are easy to assemble and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an exploded schematic diagram of the AC test terminal of the present invention;

[0032] Figure 2 It is a schematic structural diagram of a first conductor of an AC test terminal of the present invention;

[0033] Figure 3 It is a schematic structural diagram of the second conductor of the AC test terminal of the present invention.

[0034] Figure 4A schematic structural diagram of the third conductor of the AC test terminal of the present invention.

[0035] Figure 5 It is a schematic structural diagram of the bridging terminal of the present invention.

[0036] Figure 6 It is a structural schematic diagram of the AC test terminal assembly structure of the present invention.

[0037] Figure 7 It is a schematic structural diagram of the short-circuit bar of the present invention.

[0038] Figure 8 It is a schematic structural diagram of the shorting piece of the present invention.

[0039] Description of reference numerals:

[0040] 1. Base; 11. First housing; 110. Slide; 111. First main housing; 112. First cover; 113. First slot; 114. Short-circuit positioning slot; 1141. Sixth slot; 115. Bridge card slot; 1151. Positioning block; 1152. Card block; 1153. Second slot; 1154. Fourth slot; 116. Mounting part; 117. First placement slot; 118. Second placement slot; 12. Second conductor; 121. Input port; 122. First connection port; 123. First short-circuit interface; 1231. Fixing nut; 13. Second conductor; 131. Second connection port; 132. Plug port; 133. Second conductive part; 134. First conductive part; 135. Connecting part;

[0041] 2. plug-in terminal; 21. second housing; 211. second main housing; 212. second cover plate; 213. positioning slot; 214. seventh slot hole; 215. third slot hole; 216. connection slot; 217. connection buckle; 218. third placement slot; 22. third conductor; 221. conductive column; 222. output port; 223. second short-circuit interface; 23. identification plate;

[0042] 3. Guide rails;

[0043] 4. short-circuit bar; 41. short-circuit portion; 42. positioning portion; 43. short-circuit connecting bolt;

[0044] 5. Shorting piece; 51. Positioning plate; 52. Shorting plug;

[0045] 6. Bridge terminal; 61. Bridge terminal body; 62. Bridge column; 63. Connecting card plate; 64. Bridge positioning groove. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-8 The present invention is described in further detail.

[0047] Embodiment 1: Disclose an AC test terminal, such as Figure 1 and Figure 5 As shown, it includes a base 1, a plug-in terminal 2 and a bridge terminal 6. The base 1 includes a first shell 11 and a first conductor 12 and a second conductor 13 installed in the first shell. The first conductor 12 is provided with an input port 121 for connecting to a cable and a first connection port 122 for connecting to the second conductor 13. The second conductor 13 is provided with a second connection port 131 corresponding to the first connection port 122, and a plug-in port 132. The bridge terminal 6 is used to connect the first connection port 122 and the second connection port 131 to connect the first conductor 12 and the second conductor 13; the plug-in terminal 2 is connected to the second conductor 13 through the plug-in port 132. The first shell 11 includes a first main shell 111 and a first cover plate 112. A first mounting groove 117 and a second mounting groove 118 are provided on one side of the first main shell 111. One side of the first mounting groove 117 is opened to form a first mounting opening, and the first conductor 12 is installed in the first mounting groove 117 through the first mounting opening. One side of the second mounting groove 118 is opened to form a second mounting opening, and the second conductor 13 is installed in the second mounting groove 118 through the second mounting opening. The first cover plate 112 is used to close the first mounting groove 117 and the second mounting groove 118, thereby protecting the first conductor 12 and the second conductor 13.

[0048] The design of the first connection port 122 and the second connection port 131 not only ensures the efficient and stable transmission of current and signals between the two, but also enables the AC test terminal to have a visible disconnection point. Allows users or maintenance personnel to intuitively judge the connection status of the AC test terminal without the help of any additional tools or equipment. When the AC test terminal needs to be maintained, repaired or replaced, it is only necessary to remove the bridge terminal 6 to disconnect the connection between the first connection port 122 and the second connection port 131, and quickly and safely put the second conductor 13 of the base 1 and the plug-in terminal 2 connected thereto into a power-free state. It greatly improves the convenience and safety of on-site operation and maintenance. On the one hand, it avoids the risk of electric shock caused by accidentally touching the live parts during the maintenance process, providing a safer working environment for maintenance personnel; on the other hand, since no additional power-off operation or complex safety measures are required, the efficiency of maintenance work has also been significantly improved.

[0049] like Figure 1As shown, the plug-in terminal 2 includes a second housing 21 detachably connected to the first housing 11 and a third conductor 22 installed in the second housing. The third conductor 22 is provided with a conductive column 221 adapted to the plug-in port 132 and an output port 222 for connecting an external device. The second housing 21 includes a second main housing 211 and a second cover plate 212; a third placement groove 218 is formed on one side of the second main housing 211, and one side of the third placement groove 218 is opened to form a third installation port. The third conductor 22 is installed in the third placement groove 218 through the third installation port, and the second cover plate 212 is used to close the third placement groove 218, thereby protecting the third conductor 22. With such a structural design, the plug-in terminal 2 and the base 1 can be separated to achieve quick plug-in and pull-out between the plug-in terminal 2 and the base 1. On the one hand, the output port 222 of the plug-in terminal 2 is adapted to the wiring schemes of different protection devices. Different protection devices can be adapted and connected to the same base 1 through the plug-in terminal 2, thereby improving the flexibility and scalability of the AC test terminal. On the other hand, the protection device can be pre-connected to the plug-in terminal 2, thereby effectively avoiding the complex and time-consuming rewiring work on site, greatly improving the work efficiency of installation and maintenance, and reducing manpower and time costs.

[0050] In order to facilitate the subsequent route direction, Figure 1 and Figure 2 As shown, the input port 121 is located on the side surface of the first conductor 12 away from the second conductor 13, and the first connection port 122 is located on the top surface of the first conductor 12; the first housing 11 is provided with a first slot 113 that matches the input port 121 and a second slot 1153 that matches the first connection port 122. Figure 1 and Figure 4 As shown, the output port 222 is located on the side end surface of the third conductor 22 away from the conductive column 221 , and the second shell 21 is provided with a third slot 215 matched with the output port 222 .

[0051] like Figure 3 As shown, the second conductor 13 includes a first conductive portion 134, a second conductive portion 133, and a connecting portion 135 connecting the first conductive portion 134 and the second conductive portion 133. The first conductive portion 134, the second conductive portion 133, and the connecting portion form a U-shaped structure. The second connecting port 131 is located on the top surface of the second conductive portion 133, and the plug port 132 is located on the top surface of the first conductive portion 134. Figure 1 As shown, the first shell 11 is provided with a fourth slot 1154 that cooperates with the second connection port 131 ; the first shell 11 is provided with a mounting portion 116 for accommodating the first conductive portion 134 ; and a fifth slot 1161 that cooperates with the plug port 132 is provided on the top surface of the mounting portion 116 .

[0052] like Figure 1As shown, in order to facilitate the connection with the second shell 21, a positioning groove 213 for the installation part 116 to be inserted is formed on the bottom surface of the second shell 21, so that when the second shell 21 is connected to the first shell 11, the installation part 116 of the first shell 11 is inserted into the positioning groove 213 of the second shell 21; the conductive column 221 is located in the positioning groove 213 and the length of the conductive column 221 in the positioning groove 213 is less than the depth of the positioning groove 213. In this way, on the one hand, the conductive column 221 will not exceed the positioning groove 213, and is physically isolated from the external environment. This isolation reduces the chance of direct contact between the conductive column 221 and the risk of electric shock; on the other hand, the conductive column 221 is tightly connected with the installation part 116 through the positioning groove 213, so as to achieve a stable connection with the plug port 132. This precise matching not only ensures the effective contact between the conductive column 221 and the plug port 132, but also greatly reduces the electrical impedance, and improves the efficiency and stability of current transmission.

[0053] like Figure 5 As shown, the bridge terminal 6 includes a bridge terminal body 61 and a pair of bridge posts 62 connected to the bridge terminal body 61; the pair of bridge posts 62 are respectively adapted to the first connection port 122 and the second connection port 131; Figure 1 As shown, in order to improve the connection stability between the bridge terminal 6 and the first shell 11, the first shell 11 extends upward to form a bridge slot 115 adapted to the bridge terminal body 61; the second slot 1153 matched with the first connection port 122 and the fourth slot 1154 matched with the second connection port 131 are located in the bridge slot 115; in order to further improve the connection stability between the bridge terminal 6 and the first shell 11, as shown Figure 1 and Figure 5 As shown, the bottom of the bridge slot 115 protrudes upward to form a positioning block 1151; a bridge positioning slot 64 adapted to the positioning block 1151 is formed on the bottom surface of the bridge terminal body 61; in addition, both ends of the bridge terminal body 61 have connecting card plates 63; and blocks 1152 that cooperate with the connecting card plates 63 are formed on the two side walls of the bridge slot 115. In this way, when the bridge terminal 6 is installed in place, the connecting card plate 63 and the block 1152 cooperate to make the bridge terminal 6 less likely to detach, and the connection between the connecting card plate 63 and the block 1152 is also convenient for assembly and disassembly.

[0054] In other embodiments, a logo plate 23 is disposed on the top of the first housing 11 and / or the second housing 21. Figure 1 As shown, the identification plate 23 is detachably connected to the first shell 11 and the second shell 21 by snaps. The identification plate 23 helps to identify the correct wiring position, especially in large electrical systems or complex circuit boards. The AC test terminal block can reduce the risk of incorrect connection.

[0055] Embodiment 2: Embodiment 2 differs from Embodiment 1 in that: Figure 2 As shown, the first conductor 12 also has a first short-circuit interface 123; the first short-circuit interface 123 is located between the input port 121 and the first connection port 122; Figure 1 As shown, a sixth slot 1141 is provided on the top surface of the first housing 11 to cooperate with the first short-circuit interface 123; Figure 4 As shown, the third conductor 22 has a second short-circuit interface 223; the conductive column 221 is located between the second short-circuit interface 223 and the output port 222; Figure 1 As shown, the second housing 21 is provided with a seventh slot 214 matched with the second short-circuit interface 223 .

[0056] Through the first short-circuit interface 123, the short-circuit operation of the base 1 of different AC test terminals can be quickly implemented, and through the second short-circuit interface 223, the short-circuit operation of the plug-in terminal 2 of different AC test terminals can be quickly implemented. This significantly shortens the operation time and improves work efficiency when circuit testing, debugging or temporary connection is required.

[0057] Embodiment 3: Disclosed is an AC test terminal assembly structure, such as Figure 6 As shown, it includes a guide rail 3 and a plurality of AC test terminals in Embodiment 1 or Embodiment 2 connected to the guide rail 3; all the AC test terminals are arranged close to each other side by side.

[0058] In other embodiments, in order to reduce the number of parts and the overall length, a better solution may be adopted, such as Figure 6 As shown, the AC test terminal at the outermost side has a first cover plate 112 and a second cover plate 212, and the first cover plate 112 and the second cover plate 212 can be omitted for the remaining AC test terminals, that is, the AC test terminal at the outermost side uses the first cover plate 112 to close the first mounting groove 117 and the second mounting groove 118 of the first main shell 111, and the second cover plate 212 to close the third mounting groove 218 of the second main shell 211, and the other AC test terminals use the adjacent first main shell 111 to close the first mounting groove 117 and the second mounting groove 118 of the first main shell 111, and the adjacent second main shell 211 to close the third mounting groove 218 of the second main shell 211.

[0059] like Figure 1 and Figure 6 As shown, a pair of connecting buckles 217 distributed up and down are formed on the second cover plate 212; and connecting slots 216 cooperating with the connecting buckles 217 are formed on the upper and lower end surfaces of the second main shell 211. Figure 1 As shown, a complete signal terminal is connected to the connection slot 216 of the second main shell 211 through the connection buckle 217 of the second cover plate 212. Figure 6As shown, when multiple signal terminals are combined, all second main shells 211 between the second cover plate 212 and the second main shell 211 farthest from it are also formed with a pair of connecting buckles 217 distributed up and down; adjacent second main shells 211 are connected by connecting buckles 217 and connecting slots 216.

[0060] like Figure 1 and Figure 6 The bottom of the first housing 11 is provided with a slide groove 110 adapted to the guide rail 3. The AC test terminals are arranged on the guide rail 3 through the slide groove 110. On the one hand, the AC test terminals are easy to assemble; on the other hand, the AC test terminals adopt a modular design. Under the action of the slide groove 110 and the guide rail 3, the number of AC test terminals can be conveniently adjusted according to different types and specifications of protection devices, so that the combined structure of the AC test terminals takes into account various types of protection devices, thereby improving its versatility and flexibility.

[0061] like Figure 6 As shown, when it is necessary to short-circuit the bases 1 of different AC test terminals, a shorting bar 4 can be used; Figure 6 and Figure 7 As shown, the short-circuit bar 4 includes a plurality of short-circuit parts 41 connected in sequence along the arrangement direction of the AC test terminals on the guide rail, and the short-circuit part 41 includes a positioning part 42 and a short-circuit connection bolt 43; the short-circuit connection bolt 43 passes through the positioning part 42 and is adapted to the first short-circuit interface 123; the first housing 11 is provided with a short-circuit positioning groove 114 that matches the positioning part 42. In order to make the short-circuit bar 4 more stable when short-circuiting, as shown in FIG. Figure 2 As shown, the bottom of the first conductor 12 is opposite to the fixing nut 1231 of the first short-circuit interface 123, and the short-circuit connecting bolt 43 passes through the first short-circuit interface 123 and is threadedly connected to the fixing nut 1231. It should be noted that the number and spacing of the short-circuit parts 41 can be adjusted according to the wiring requirements of the protection device.

[0062] like Figure 6 As shown, when it is necessary to short-circuit the bridge terminals 6 of different AC test terminals, a shorting piece 5 can be used; Figure 6 and Figure 8 The shorting piece 5 includes a positioning plate 51 extending along the arrangement direction of the plug-in terminals of the AC test terminal, and the positioning plate 51 is adapted to the seventh slot 214. The positioning plate 51 is provided with a plurality of shorting plugs 52 adapted to the second short-circuit interface 223 at intervals along the direction in which it extends. It should be noted that the number and spacing of the shorting plugs 52 can be adjusted according to the wiring requirements of the protection device.

[0063] Through the shorting bar 4 and the shorting piece 5, the AC test terminal block can conveniently realize the shorting of the first short-circuit interface and the second short-circuit interface between the AC test terminal blocks during on-site operation and maintenance. This provides great convenience for on-site operation and maintenance personnel, allowing the AC test terminal block to respond quickly to various short-circuit requirements, thereby significantly improving work efficiency and circuit connection reliability.

[0064] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An AC test terminal, characterized in that: include: A base (1) comprises a first shell (11), a first conductor (12) and a second conductor (13); the first conductor (12) and the second conductor (13) are installed in the first shell (11); the first conductor (12) has an input port (121) and a first connection port (122); the input port (121) is used to connect to a cable; the second conductor (13) has a second connection port (131) and a plug port (132); A plug-in terminal (2) is detachably mounted on the base (1), comprising a second housing (21) and a third conductor (22); the third conductor (22) is mounted in the second housing (21); the third conductor (22) has a conductive column (221) and an output port (222); the conductive column (221) is compatible with the plug-in port (132); the output port (222) is used to connect to an external device; A bridging terminal (6) detachably mounted on the base (1), used for connecting the first conductor (12) and the second conductor (13) and having a pair of bridging posts (62); A pair of bridging posts (62) are respectively adapted to the first connection port (122) and the second connection port (131).

2. An AC test terminal according to claim 1, characterized in that: The first conductor (12) has a first short-circuit interface (123); the third conductor (22) has a second short-circuit interface (223); the first short-circuit interface (123) and the second short-circuit interface (223) are used for circuit short-circuiting.

3. The AC test terminal according to claim 1, characterized in that: The second conductor (13) has a first conductive part (134); the plug-in port (132) is located on the top surface of the first conductive part (134); a mounting part (116) for accommodating the first conductive part (134) is formed on the top of the first shell (11); a positioning groove (213) for inserting the mounting part (116) is formed on the bottom surface of the second shell (21); and the conductive column (221) is located in the positioning groove (213).

4. An AC test terminal according to claim 3, characterized in that: The length of the conductive column (221) in the positioning groove (213) is smaller than the depth of the positioning groove (213).

5. The AC test terminal according to claim 1, characterized in that: The first housing (11) extends upward to form a bridge slot (115); the bridge terminal (6) has a bridge terminal body (61) adapted to the bridge slot (115).

6. An AC test terminal according to claim 5, characterized in that: The bottom of the bridge slot (115) protrudes upward to form a positioning block (1151); and a bridge positioning groove (64) adapted to the positioning block (1151) is formed on the bottom surface of the bridge terminal body (61).

7. The AC test terminal according to claim 5, characterized in that: The two ends of the bridge terminal body (61) are provided with connecting clamping plates (63); and clamping blocks (1152) matching with the connecting clamping plates (63) are formed on the two side walls of the bridge clamping slot (115).

8. An AC test terminal assembly structure, characterized in that: The invention comprises a plurality of AC test terminals as claimed in any one of claims 1 to 7, a first cover plate (112) and a second cover plate (212) arranged side by side; the first housing (11) comprises a first main housing (111), one side of the first main housing (111) is provided with a first mounting groove (117) and a second mounting groove (118); one side of the first mounting groove (117) is opened to form a first mounting opening, and the first conductor (12) is mounted in the first mounting groove (117) through the first mounting opening; one side of the second mounting groove (118) is opened to form a second mounting opening, and the second conductor (13) is mounted in the second mounting groove (118) through the second mounting opening, and the first main housing (111) adjacent to the first main housing (111) closes the first mounting opening and the second mounting opening; the first mounting groove (117) and the second mounting groove (118) of the first main housing (111) at the outermost side are closed by the first cover plate (112); The second shell (21) comprises a second main shell (211); a third mounting groove (218) is provided on one side of the second main shell (211); one side of the third mounting groove (218) is opened to form a third mounting opening; the third conductor (22) is mounted in the third mounting groove (218) through the third mounting opening; the second main shell (211) adjacent to the second main shell (211) closes the third mounting opening; the third mounting groove (218) of the second main shell (211) at the outermost side is closed by the second cover plate (212).

9. The AC test terminal assembly structure according to claim 8, characterized in that: It also includes a guide rail (3); the bottom of the first shell (11) is provided with a slide groove (110) adapted to the guide rail (3).

10. The AC test terminal assembly structure according to claim 8, characterized in that: Adjacent second main shells (211) are connected by snap-fitting.

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