Current loop wiring terminal combination structure

Abstract

The current loop wiring terminal combination structure at least comprises one or more current loop wiring terminals and a mounting guide rail, the current loop wiring terminal comprises a base and a plugging terminal, a first electric conductor and a second electric conductor are installed in the base, the first electric conductor is provided with an input port, a first elastic piece and a first short circuit interface, and the second electric conductor is provided with a second elastic piece and a conductive column. And the first elastic sheet and the second elastic sheet form a test socket. The plugging terminal is provided with a third conductor, and the third conductor is provided with an output port and a plugging port. The current loop wiring terminals are sequentially and detachably installed on the installation guide rail through the base in the direction perpendicular to the arrangement direction of the first electric conductor and the second electric conductor. The current loop wiring terminal combination structure has the advantages that the input end and the output end are separated, short circuit operation and test operation are simple and convenient, later maintenance is simple, modular design is achieved, and the number of the current loop wiring terminals can be conveniently adjusted according to the number of interfaces of relay protection and other electrical devices.

Description

Technical Field

[0001] The invention relates to the technical field of wiring, and in particular to a current loop wiring terminal combination structure. Background Art

[0002] In modern electrical engineering, the current loop terminal block assembly structure is not only a key component of electrical connection, but also an important guarantee for the stability and safety of the entire electrical system. In the AC circuit, the input end of the current loop terminal block assembly structure is connected to the cable of the original AC circuit, and the other end is connected to the relay protection and other electrical devices, ensuring the smooth transmission of current through the internal metal conductor and insulator structure.

[0003] Relay protection and other electrical devices play a vital role in AC circuits, monitoring the operating status of the circuits at all times. Once an abnormality occurs in the circuit, such as overload, short circuit or voltage fluctuation, these protection devices can respond quickly and accurately cut off the faulty circuit, thereby effectively preventing equipment damage and accidents, and ensuring the overall safety and stability of the electrical system. However, to ensure that relay protection and other electrical devices can consistently play this important role, regular maintenance, testing and replacement are essential. This step is crucial throughout the life cycle of the entire electrical system, and it is directly related to the long-term stable operation and safety of the system. The current loop terminal combination structure of the prior art exposes some technical defects in practical applications:

[0004] (1) Relay protection and other electrical devices replacement operations are cumbersome

[0005] The current loop terminal assembly structure of the existing technology has to face a series of challenges when replacing relay protection and other electrical devices because its input and output ends are integrated. The first difficulty is that in order to ensure safe replacement, the entire original AC circuit must be powered off, which will undoubtedly interfere with the continuous operation of the circuit and affect the stability and availability of the system.

[0006] Furthermore, the replacement process involves dismantling the original relay protection and other electrical devices and the output terminal connection of the current loop terminal assembly structure one by one on site, and then reconnecting the new relay protection and other electrical devices to these output terminals one by one. This series of operations is not only cumbersome and requires a lot of on-site operation time, but also extremely tests the patience and meticulousness of the operators, making it difficult to improve the overall work efficiency.

[0007] More importantly, in such a complex and delicate disassembly and rewiring process, the slightest carelessness may lead to safety hazards such as short circuit or open circuit due to operational errors, which will not only endanger the safety of the operators, but may also pose a serious threat to the stable operation of the entire AC circuit, causing system performance to decline or even paralysis.

[0008] (2) Testing and maintenance of relay protection and other electrical devices are cumbersome

[0009] To ensure the continuous and stable operation of the power distribution system, it is essential to conduct accurate and rigorous tests on the input and output of relay protection and other electrical devices regularly without affecting the normal operation of the original circuit. The core requirement of this testing process is that the original circuit must remain closed during the test to prevent any form of interruption, thereby ensuring the continuity and stability of the system.

[0010] However, the current loop terminal assembly structure in the prior art has significant design defects. The internal metal conductors are often directly exposed to the outside, which requires on-site operators to manually short-circuit the AC circuit with these different metal conductors. This structural design not only greatly increases the complexity and cumbersomeness of the operation, but also significantly increases the risk of human error, which poses a great challenge to the accuracy and reliability of the test work.

[0011] What’s more serious is that due to the lack of fixed connection wires on the metal conductors, the metal conductors are easily detached during operation, resulting in test failure. This situation not only wastes valuable time and resources, but also poses a potential threat to the stability and safety of the power distribution system.

[0012] (3) Poor scalability

[0013] As the demand for electricity continues to grow, the power system is undergoing continuous expansion and upgrading to adapt to the growing energy demand and complex application scenarios. However, the current loop terminal combination structure in the prior art has certain limitations in design, and the number of interfaces at the input and output ends is relatively fixed, lacking flexibility.

[0014] This design limitation means that when the number of relay protection and other electrical devices that need to be connected increases, the original terminal combination structure often cannot meet the needs. In this case, measures have to be taken to dismantle the original structure and replace the entire current loop terminal combination structure to adapt to the new connection requirements. This approach is not only time-consuming and labor-intensive, increasing engineering costs, but also may interfere with the stable operation of the power system during the replacement process, and even cause safety risks. Summary of the invention

[0015] The technical problem to be solved by the present invention is to provide a structure with separated input and output ends, which has simple and quick short-circuit and test operations, simple later maintenance, convenient replacement of external connection equipment, and a modular design. The current loop terminal combination structure can conveniently adjust the number of current loop terminals according to the number of interfaces of relay protection and other electrical devices.

[0016] In order to solve the above technical problems, the present invention provides a technical solution, a current loop wiring terminal assembly structure, comprising at least one or more current loop wiring terminals and a mounting rail;

[0017] The current loop terminal at least comprises a base whose bottom is adapted to the mounting rail and a plug-in terminal detachably connected to the base, wherein a first conductor and a second conductor arranged at intervals are installed in the base, wherein the first conductor is provided with an input port, a first spring clip and a first short-circuit interface between the input port and the first spring clip, and the second conductor is provided with a second spring clip and a conductive column matching the first spring clip, wherein the first spring clip and the second spring clip form a test socket, and the test socket has a conducting state in which the first spring clip abuts against the second spring clip to electrically connect the first conductor to the second conductor, and an off-circuit state in which the first spring clip and the second spring clip are separated from each other to disconnect the first conductor from the second conductor;

[0018] A third conductor is installed in the plug-in terminal, and the third conductor is provided with an output port and a plug-in port adapted to the conductive column;

[0019] The current loop connection terminals are detachably mounted on the mounting rail in sequence through the base along an arrangement direction perpendicular to the first conductor and the second conductor.

[0020] In a preferred embodiment, the mounting rail is provided with a plurality of first mounting holes at intervals along its extension direction, and the edges on both sides protrude outward perpendicular to its extension direction to form a snap-fitting portion, and the bottom of the base is provided with snap-fitting grooves corresponding to the snap-fitting portions on both sides of the mounting rail, and the base is detachably mounted on the mounting rail by snapping the snap-fitting grooves with the snap-fitting portions.

[0021] A preferred embodiment further comprises a plurality of test plugs adapted to the test sockets, wherein a fourth conductor and a fifth conductor arranged at intervals are installed in the test plugs, the fourth conductor is provided with a first test interface, and the fifth conductor is provided with a second test interface;

[0022] The test plug has a first state in which it is located outside the test socket and the test socket is in a conducting state, and a second state in which it is inserted into the test socket and the test socket is in an off-circuit state, and the first spring sheet is electrically connected to the fourth conductor and the second spring sheet is electrically connected to the fifth conductor.

[0023] In a preferred embodiment, the bottom of the test plug is provided with an insertion portion for inserting between the first elastic sheet and the second elastic sheet to switch the test socket from the conducting state to the disconnecting state;

[0024] The fourth conductor is provided with a first conductive portion extending along a side of the insertion portion close to the first elastic sheet, and the fourth conductor is electrically connected to the first elastic sheet through the first conductive portion;

[0025] The fifth conductor is provided with a second conductive portion extending along a side of the insertion portion close to the second elastic sheet, and the fifth conductor is electrically connected to the second elastic sheet through the second conductive portion.

[0026] In a preferred embodiment, the fourth conductor is provided with a second short-circuit interface on the top end surface, and the test plug is provided with a fifth slot matching the second short-circuit interface.

[0027] In a preferred embodiment, one side wall of the test plug is recessed inward to form a slide groove, and the other side wall is protruded outward to form a slider adapted to the slide groove, a first positioning block is provided in the slide groove, and the slider is provided with a positioning groove (361) adapted to the first positioning block, and adjacent test plugs are detachably connected by inserting the slider into the slide groove and the first positioning block into the positioning groove.

[0028] In a preferred embodiment, one side wall of the base is recessed inward to form a plurality of positioning holes, and the other side wall is protruded outward to form a second positioning block adapted to the positioning holes, and the adjacent bases can be detachably connected by inserting the second positioning block into the positioning hole.

[0029] In a preferred embodiment, the input port is located at an end of the first conductor away from the second conductor, the first spring is located at an end of the first conductor close to the second conductor, and the first short-circuit interface is located on the top end surface of the first conductor;

[0030] The base is provided with a first wiring slot matching the input port on the side wall, and a first slot hole matching the first short-circuit interface and a second slot hole matching the test socket are provided on the top.

[0031] In a preferred embodiment, a second mounting hole is provided on the top end surface of the first conductor between the input port and the first short-circuit interface, the second mounting hole is connected to the input port, and a third slot matching the second mounting hole is provided on the top of the base;

[0032] The top end surface of the third conductor is provided with a third mounting hole connected with the output port, and the plug-in terminal is provided with a fourth slot hole matching with the third mounting hole at the top.

[0033] In a preferred embodiment, the side walls of the outermost current loop terminal bases detachably mounted on the mounting rail protrude outward to form a first mounting portion, and the corresponding side walls of the plug-in terminals protrude outward to form a second mounting portion matching the first mounting portion.

[0034] Compared with the prior art, the current loop terminal assembly structure of the present invention has the following beneficial effects:

[0035] (1) The current loop terminal assembly structure of the present invention includes at least one or more current loop terminals and a mounting rail. The current loop terminal includes at least a base whose bottom is compatible with the mounting rail and a plug-in terminal detachably connected to the base. A first conductor and a second conductor are installed in the base, and the second conductor is provided with a conductive column. A third conductor is installed in the plug-in terminal, and the third conductor is provided with an output port and a plug-in port compatible with the conductive column. The separate structural design of the input end base and the output end plug-in terminal can establish an electrical connection instantly by easily inserting the plug-in terminal into the corresponding base; conversely, the connection can be quickly disconnected by simply pulling out the plug-in terminal. This design greatly optimizes the subsequent maintenance and replacement process, and eliminates the disadvantage of the traditional method of requiring cumbersome disassembly of the entire current loop terminal. Now, the replacement of relay protection and other electrical devices can be easily completed through convenient plug-in operations, thereby significantly improving work efficiency and reducing operation complexity. The great flexibility of the preparatory stage of the split structure design allows the pre-wiring operation with relay protection and other electrical devices through plug-in terminals at this stage to form an independent connection module. In this way, in the subsequent on-site maintenance and replacement process, you only need to easily insert these pre-wired plug-in terminals into the corresponding base to complete the entire connection process. This design not only greatly avoids the complex and time-consuming on-site wiring, rewiring and wiring work, but also significantly improves the efficiency and accuracy of installation and maintenance.

[0036] (2) The current loop terminal assembly structure of the present invention has a first short-circuit interface between the first conductor and the first spring sheet, and a first slot matching the first short-circuit interface is provided at the top of the base; the fourth conductor has a second short-circuit interface at the top end surface, which provides an additional access point for short-circuiting, and the test plug has a fifth slot matching the second short-circuit interface. This dual-interface design can easily realize the short-circuit function of the original circuit by simply inserting the short-circuit wire or short-circuit bar into the corresponding short-circuit interface, which greatly simplifies the operation process, reduces the risk of human error, and significantly improves the efficiency of the short-circuit operation. The dual-interface design of the first short-circuit interface and the second short-circuit interface not only enriches the short-circuit wiring method, but also greatly improves the flexibility and convenience of the operation, so that the current loop terminal assembly structure can easily cope with various complex application scenarios, fully demonstrating its wide practical value and excellent market adaptability. More importantly, the present invention also supports the use of short-circuit wires or short-circuit bars to connect the first short-circuit interface with the second short-circuit interface at the same time, thereby constructing an innovative dual short-circuit protection mechanism. This design effectively solves the problem of accidental detachment of short-circuit wires or short-circuit bars due to frequent plugging and unplugging during the test, thereby avoiding the interruption of the original circuit caused by this, and providing a strong guarantee for the continuous and stable operation of the power distribution system. This not only effectively avoids the economic losses that may be caused by circuit interruption, but also significantly reduces potential safety risks.

[0037] (3) The current loop terminal assembly structure of the present invention has a plurality of first mounting holes arranged at intervals along the extension direction of the mounting rail. Through the first mounting holes, the entire current loop terminal assembly structure can be easily and firmly installed inside the electrical cabinet, greatly improving the flexibility and convenience of installation. The two side edges of the mounting rail protrude outward perpendicular to the extension direction thereof to form a snap-fitting portion, and the bottom of the base is provided with a snap-fitting groove corresponding to the snap-fitting portions on both sides of the mounting rail. The base can be detachably and firmly installed on the mounting rail by snapping the snap-fitting portion with the snap-fitting groove. This snap-fitting design not only simplifies the installation and disassembly process, but also ensures the stability and reliability of the connection. In addition, the design also fully considers the flexibility and scalability requirements in practical applications. Users can easily adjust the number of current loop terminals according to the number and interface requirements of relay protection and other electrical devices in a specific project. This convenient adjustment capability enables the present invention to easily cope with various complex electrical connection requirements, greatly improving its practical value and market competitiveness. The current loop terminal of the current loop terminal assembly structure of the present invention adopts a modular design. This design makes each current loop terminal an independent and replaceable unit. Therefore, in actual application, once a current loop terminal fails, the staff can quickly and accurately locate the problem and easily replace it, thus ensuring the continuous and stable operation of the entire electrical system. This modular design not only improves the convenience of maintenance, but also greatly shortens the troubleshooting time and reduces the potential losses caused by equipment failure. At the same time, it also makes the management and procurement of spare parts simpler and more efficient, because each module is standardized and can be easily stocked and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of a first embodiment of a current loop wiring terminal assembly structure of the present invention;

[0039] Figure 2 It is a schematic diagram of the base structure of a first embodiment of a current loop wiring terminal assembly structure of the present invention;

[0040] Figure 3 It is a schematic diagram of the installation structure of the first conductor and the second conductor of Embodiment 1 of a current loop wiring terminal assembly structure of the present invention;

[0041] Figure 4 It is a schematic diagram of a plug-in terminal structure of a first embodiment of a current loop wiring terminal assembly structure of the present invention;

[0042] Figure 5 A schematic diagram of a third conductor structure of a current loop wiring terminal assembly structure implementation one of the present invention;

[0043] Figure 6 It is a schematic diagram of the installation structure of the current loop wiring terminal base and the installation rail of the first embodiment of the current loop wiring terminal assembly structure of the present invention;

[0044] Figure 7 It is a schematic diagram of the installation structure between the current loop wiring terminal bases of the first embodiment of the current loop wiring terminal assembly structure of the present invention;

[0045] Figure 8 A cross-sectional view of a test plug of a first embodiment of a current loop wiring terminal assembly structure of the present invention;

[0046] Fig. 9 It is a schematic diagram of the installation structure between the test plugs of the first embodiment of the current loop wiring terminal assembly structure of the present invention;

[0047] Fig.10 The present invention is a schematic structural diagram of a short-circuit plug of a second embodiment of a current loop terminal assembly structure.

[0048] Description of reference numerals:

[0049] 1-current loop terminal; 11-base; 111-first conductor; 1111-input port; 1112-first spring; 1113-first short-circuit interface; 1114-second mounting hole; 112-second conductor; 113-slot; 114-positioning hole; 115-second positioning block; 116-first wiring slot; 117-first slot hole; 118-second slot hole; 119-third slot hole; 1110-first installation hole Mounting part; 1120-sixth slot; 1121-second spring; 1122-conductive column; 12-plug-in terminal; 121-third conductor; 1211-output port; 1212-plug-in port; 1213-third mounting hole; 1214-output part; 1215-plug-in part; 122-fourth slot; 123-second mounting part; 124-second wiring slot; 125-seventh slot; 126 plug-in terminal; 13-test socket;

[0050] 2-mounting rail; 21-first mounting hole; 22-clamping portion;

[0051] 3-test plug; 31-fourth conductor; 311-first test interface; 312-first conductive part; 313-second short-circuit interface; 32-fifth conductor; 321-second test interface; 322-second conductive part; 33-insertion part; 34-fifth slot; 35-slide; 351-first positioning block; 36-slider; 361-positioning slot;

[0052] 4- short-circuit plug; 41- main body; 42- short-circuit part. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0054] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] Embodiment 1

[0057] The current loop terminal assembly structure of this embodiment is as follows: Figure 1 As shown, it includes at least one or more current loop terminals 1 and a mounting rail 2. The current loop terminals adopt a modular design, so that each current loop terminal becomes an independent and replaceable unit. Therefore, in actual application, once a current loop terminal fails, the staff can quickly and accurately locate the problem and easily replace it, thereby ensuring the continuous and stable operation of the entire electrical system. This modular design not only improves the convenience of maintenance, but also greatly shortens the fault handling time and reduces the potential losses caused by equipment failure. At the same time, it also makes the management and procurement of spare parts simpler and more efficient, because each module is standardized and can be easily stocked and replaced.

[0058] The current loop terminal comprises at least a base 11 whose bottom is adapted to the mounting rail and a plug-in terminal 12 detachably connected to the base. Figure 2 As shown, the base is installed with a first conductor 111 and a second conductor 112 arranged at intervals. In this embodiment, two shells are buckled to form a base 11 with an internal cavity, and the first conductor and the second conductor are installed in the cavity of the base.

[0059] like Figure 3As shown, the first conductor is provided with an input port 1111 for connecting to the cable of the original AC circuit, a first spring clip 1112 for electrically connecting to the second conductor 112, and a first short-circuit interface 1113 located between the input port and the first spring clip. During the test process, there is no need for cumbersome short-circuit wiring. It is only necessary to insert the short-circuit bar or short-circuit wire into the first short-circuit interface of the different current loop wiring terminals to complete the short-circuit operation, which not only reduces the cumbersomeness of the operation, but also reduces the risk of human operation errors. The second conductor is provided with a second spring clip 1121 and a conductive column 1122 that match the first spring clip. The first spring clip and the second spring clip form a test socket 13, and the test socket has a conductive state in which the first spring clip abuts against the second spring clip to electrically connect the first conductor to the second conductor, and a disconnected state in which the first spring clip and the second spring clip are separated from each other to disconnect the first conductor from the second conductor. Such a structural design not only ensures the high efficiency and stability of current transmission, but also provides a visible disconnection point between the first conductor and the second conductor, so that the operator can intuitively judge the connection status inside the current loop terminal.

[0060] like Figure 2 and Figure 3 As shown, in this embodiment, the input port 1111 is located at one end of the first conductor away from the second conductor, the first spring 1112 is located at one end of the first conductor close to the second conductor, and the first short-circuit interface 1113 is located on the top end surface of the first conductor. The base 11 is provided with a first wiring slot 116 matching the input port on the side wall, and a first slot hole 117 matching the first short-circuit interface and a second slot hole 118 matching the test socket 13 are provided on the top. Such a structural design makes the structure of the base more compact, and the number of the current loop wiring terminal combination structure can be easily expanded in an electrical cabinet with limited space, so as to cope with different complex installation environments.

[0061] Preferably, Figure 3 As shown, the first elastic sheet 1112 includes a fixing portion 11121 fixedly connected to the first conductor, a connecting portion 11122 extending from the fixing portion into the second slot, and a working portion 11123 extending from the connecting portion toward the second elastic sheet for elastically abutting against the second elastic sheet.

[0062] In this embodiment, the structure of the second spring clip 1121 is the same as that of the first spring clip 1112, and they are symmetrically arranged. The second spring clip is located at the end of the second conductor close to the first conductor, and the conductive column 1122 is located at the end of the second conductor away from the first conductor. The base is provided with a sixth slot 1120 at the top that matches the position of the conductive column. The conductive column is located in the sixth slot and its height is less than the depth of the sixth slot, thereby physically isolating it from the external environment. This isolation reduces the chance of people directly contacting the test socket, thereby reducing the risk of electric shock.

[0063] A second mounting hole 1114 is provided on the top end surface of the first conductor 111 between the input port 1111 and the first short-circuit interface, the second mounting hole is connected to the input port, and a third slot 119 matching the second mounting hole is provided on the top of the base. With this structural design, on the one hand, the first conductor is firmly mounted in the base by screws, thereby ensuring the reliability of the first conductor; on the other hand, the original AC circuit cable inserted into the input port is firmly fixed by the tightening action of the screws, which not only significantly improves the reliability of cable fixing, but also enhances its wide applicability to cables of different specifications and sizes.

[0064] like Figure 4 As shown, a third conductor 121 is installed in the plug-in terminal 12. The third conductor is provided with an output port 1211 for connecting to relay protection and other electrical devices and a plug-in port 1212 adapted to the conductive column, thereby ensuring the stability and reliability of the electrical connection.

[0065] In this embodiment, the two shells are buckled together to form a plug-in terminal 12 with an internal cavity, and the third conductor 121 is installed in the cavity of the plug-in terminal.

[0066] Preferably, Figure 4 and Figure 5 As shown, the third conductor 121 includes an output portion 1214, a plug-in portion 1215 extending outwardly perpendicular to the side wall of the output portion, an output port 1211 located on the end face of the output portion, and a plug-in port 1212 located on the end face of the plug-in portion away from the output portion. The plug-in terminal 12 is provided with a second wiring slot 124 adapted to the output port on the side wall, and a seventh slot hole 125 adapted to the plug-in port is provided at the bottom. In this embodiment, the seventh slot hole is gradually reduced from the bottom of the plug-in terminal to the plug-in portion, which facilitates the connection between the plug-in port 1212 and the conductive column during the process of inserting the plug-in terminal into the base.

[0067] In this embodiment, a plug-in end 126 whose outer wall is adapted to the sixth slot 1120 is provided at the bottom of the plug-in terminal, and the seventh slot 125 is located at the bottom of the plug-in end 126. The plug-in terminal 12 is embedded in the sixth slot through the plug-in end, and the conductive column 1122 is embedded in the plug-in port 1212 to connect with the base 11.

[0068] In this embodiment, the top end surface of the third conductor 121 is provided with a third mounting hole 1213 connected to the output port 1211, and the plug-in terminal is provided with a fourth slot 122 matching the third mounting hole at the top. With this structural design, on the one hand, the third conductor is firmly mounted in the plug-in terminal by means of screws, thereby ensuring the reliability of the third conductor; on the other hand, the connection wires of the relay protection and other electrical devices inserted into the output port are firmly fixed by the tightening action of the screws, which not only significantly improves the reliability of the connection wire fixation, but also enhances its wide applicability to connection wires of different specifications and sizes.

[0069] The current loop terminal 1 is detachably mounted on the mounting rail 2 through the base 11 in sequence along the arrangement direction perpendicular to the first conductor 111 and the second conductor 112. The separate structural design of the input end base 11 and the output end plug-in terminal 12 can establish an electrical connection instantly by easily inserting the plug-in terminal into the corresponding base; conversely, the connection can be quickly disconnected by simply pulling out the plug-in terminal. This design greatly optimizes the later maintenance and replacement process, and abandons the disadvantage of the traditional method of cumbersome disassembly of the entire current loop terminal. Now, the replacement of relay protection and other electrical devices can be easily completed through convenient plug-in operations, thereby significantly improving work efficiency and reducing operation complexity. The great flexibility of the pre-preparation stage of the separate structural design allows the wiring operation with the relay protection and other electrical devices to be pre-wired through the plug-in terminal at this stage to form an independent connection module. In this way, in the subsequent on-site maintenance and replacement process, these pre-wired plug-in terminals only need to be easily inserted into the corresponding base to complete the entire connection process. This design not only greatly avoids the complicated and time-consuming on-site plugging, rewiring and wiring work, but also significantly improves the efficiency and accuracy of installation and maintenance.

[0070] Preferably, Figure 1 , Figure 2 and Figure 4 As shown, the side wall of the current loop terminal base 11 which is detachably mounted on the outermost side of the mounting rail is protruded outward to form a first mounting portion 1110, and the side wall of the corresponding plug-in terminal 12 is protruded outward to form a second mounting portion 123 matching the first mounting portion. The first mounting portion is connected to the second mounting portion by screws to increase the stability of the connection between the plug-in terminal and the base.

[0071] like Figure 1 and Figure 6As shown, the mounting rail 2 is provided with a plurality of first mounting holes 21 at intervals along its extension direction. Through the first mounting holes, the entire current loop terminal assembly structure can be easily and firmly installed inside the electrical cabinet, which greatly improves the flexibility and convenience of installation. The two side edges of the mounting rail protrude outward perpendicular to its extension direction to form a snap-fitting portion 22. The bottom of the base 11 is provided with a card slot 113 corresponding to the snap-fitting portions on both sides of the mounting rail. The base is removably mounted on the mounting rail through the snap-fitting portion. This snap-fit ​​design not only simplifies the installation and disassembly process, but also ensures the stability and reliability of the connection. In addition, the design also fully considers the flexibility and scalability requirements in practical applications. Users can easily adjust the number of current loop terminals according to the number and interface requirements of relay protection and other electrical devices in a specific project. This convenient adjustment capability enables the present invention to easily cope with various complex electrical connection requirements, greatly improving its practical value and market competitiveness.

[0072] like Figure 7 As shown, a side wall of one side of the base 11 is recessed with a plurality of positioning holes 114, and a side wall of the other side is protruded outward to form a second positioning block 115 adapted to the positioning hole, and the adjacent current loop terminal bases can be inserted into the positioning hole through the second positioning block for detachable connection. Through such a structural design, the number of modular current loop terminal blocks can be increased or decreased simply and quickly, thereby improving the scalability of the overall current loop terminal assembly structure.

[0073] The current loop wiring terminal assembly structure of this embodiment also includes a plurality of test plugs 3 adapted to the test interface. Figure 8 As shown, the test plug 3 is installed with a fourth conductor 31 and a fifth conductor 32 arranged at intervals, the fourth conductor is provided with a first test interface 311, and the fifth conductor is provided with a second test interface 321. The test plug has a first state where it is located outside the test socket 13 so that the test socket is in a conducting state, and a second state where it is inserted into the test socket so that the test socket is in an off-circuit state, the first spring clip is electrically connected to the fourth conductor, and the second spring clip is electrically connected to the fifth conductor.

[0074] The bottom of the test plug is provided with an insertion portion 33 for inserting between the first spring sheet 1112 and the second spring sheet 1121 to switch the test socket 13 from the conducting state to the disconnecting state. The fourth conductor 31 is provided with a first conductive portion 312 extending along the side of the insertion portion close to the first spring sheet, and the fourth conductor is electrically connected to the first spring sheet through the first conductive portion. The fifth conductor 32 is provided with a second conductive portion 322 extending along the side of the insertion portion close to the second spring sheet, and the fifth conductor is electrically connected to the second spring sheet through the second conductive portion.

[0075] The fourth conductor 31 is provided with a second short-circuit interface 313 on the top end face, and the test plug is provided with a fifth slot 34 matching the second short-circuit interface. An additional access point is provided for short-circuiting, and the test plug is provided with a fifth slot matching the second short-circuit interface. This dual-interface design can easily realize the short-circuit function of the original circuit by simply inserting the short-circuit wire or short-circuit bar into the corresponding short-circuit interface, which greatly simplifies the operation process, reduces the risk of human error, and significantly improves the efficiency of the short-circuit operation. The dual-interface design of the first short-circuit interface and the second short-circuit interface not only enriches the short-circuit wiring method, but also greatly improves the flexibility and convenience of the operation, so that the current loop terminal combination structure can easily cope with various complex application scenarios, fully demonstrating its wide practical value and excellent market adaptability. More importantly, the present invention also supports the use of short-circuit wires or short-circuit bars to connect the first short-circuit interface to the second short-circuit interface at the same time, thereby constructing an innovative dual short-circuit protection mechanism. This design effectively solves the problem of accidental detachment of short-circuit wires or short-circuit bars due to frequent plugging and unplugging during the test, thereby avoiding the interruption of the original circuit caused by this, and providing a strong guarantee for the continuous and stable operation of the power distribution system. This not only effectively avoids the economic losses that may be caused by circuit interruption, but also significantly reduces potential safety risks.

[0076] like Fig. 9 As shown, one side wall of the test plug is recessed inward to form a slide groove 35, and the other side wall is protruded outward to form a slider 36 adapted to the slide groove, a first positioning block 351 is provided in the slide groove, and a positioning groove 361 adapted to the first positioning block is provided on the slider, and adjacent test plugs are detachably connected by inserting the slider into the slide groove and the first positioning block into the positioning groove. Through such a structural design, the number of modular test plugs can be increased or decreased simply and quickly, thereby improving the overall scalability of the current loop terminal block combination structure.

[0077] Embodiment 2

[0078] The current loop terminal assembly structure of this embodiment also includes a short-circuit plug 4 for connecting the first short-circuit interface 1113 or the second short-circuit interface 313 of different current loop terminals 1. The short-circuit plug 4 includes a body 41 and a plurality of short-circuit portions 42 extending outward from the body and arranged in parallel. The short-circuit portions are adapted to the first short-circuit interface or the second short-circuit interface.

[0079] In short, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A current loop terminal assembly structure, characterized in that: At least comprising one or more current loop wiring terminals (1) and a mounting rail (2); The current loop terminal comprises at least a base (11) whose bottom is adapted to the mounting rail and a plug-in terminal (12) detachably connected to the base, wherein a first conductor (111) and a second conductor (112) arranged at intervals are installed in the base, wherein the first conductor is provided with an input port (1111), a first spring sheet (1112) and a first short-circuit interface (1113) located between the input port and the first spring sheet, and the second conductor is provided with a second spring sheet (1121) and a conductive column (1122) matching the first spring sheet, and the first spring sheet and the second spring sheet form a test socket (13), and the test socket (13) has a conducting state in which the first spring sheet abuts against the second spring sheet, so that the first conductor is electrically connected to the second conductor, and an off-circuit state in which the first spring sheet and the second spring sheet are separated from each other, so that the first conductor is disconnected from the second conductor; A third conductor (121) is installed in the plug-in terminal, and the third conductor is provided with an output port (1211) and a plug-in port (1212) adapted to the conductive column; The current loop connection terminals are detachably mounted on the mounting rail in sequence through the base along an arrangement direction perpendicular to the first conductor and the second conductor.

2. A current loop terminal assembly structure according to claim 1, characterized in that: The mounting rail (2) is provided with a plurality of first mounting holes (21) at intervals along its extension direction, and the edges on both sides thereof protrude outward perpendicularly to its extension direction to form a snap-fitting portion (22), and the bottom of the base (11) is provided with snap-fitting grooves (113) corresponding to the snap-fitting portions on both sides of the mounting rail, and the base is detachably mounted on the mounting rail by snapping the snap-fitting grooves with the snap-fitting portions.

3. A current loop terminal assembly structure according to claim 1 or 2, characterized in that: Also included are a plurality of test plugs (3) adapted to the test sockets, wherein a fourth conductor (31) and a fifth conductor (32) arranged at intervals are installed in the test plugs, the fourth conductor is provided with a first test interface (311), and the fifth conductor is provided with a second test interface (321); The test plug has a first state in which it is located outside the test socket (13) so that the test socket is in a conducting state, and a second state in which it is inserted into the test socket so that the test socket is in a disconnecting state and the first spring sheet is electrically connected to the fourth conductor and the second spring sheet is electrically connected to the fifth conductor.

4. A current loop terminal assembly structure according to claim 3, characterized in that: The bottom of the test plug is provided with an insertion portion (33) for being inserted between the first elastic sheet (1112) and the second elastic sheet (1121) to switch the test socket (13) from the conducting state to the disconnecting state; The fourth conductor (31) is provided with a first conductive portion (312) extending along a side of the insertion portion close to the first elastic sheet, and the fourth conductor is electrically connected to the first elastic sheet via the first conductive portion; The fifth conductor (32) is provided with a second conductive portion (322) extending along a side of the insertion portion close to the second elastic sheet, and the fifth conductor is electrically connected to the second elastic sheet via the second conductive portion.

5. A current loop terminal assembly structure according to claim 4, characterized in that: The fourth conductor (31) is provided with a second short-circuit interface (313) at the top end surface, and the test plug is provided with a fifth slot (34) matching the second short-circuit interface.

6. A current loop terminal assembly structure according to claim 5, characterized in that: One side wall of the test plug is recessed inward to form a slide groove (35), and the other side wall is protruded outward to form a slider (36) adapted to the slide groove, a first positioning block (351) is provided in the slide groove, and the slider is provided with a positioning groove (361) adapted to the first positioning block, and adjacent test plugs are detachably connected by inserting the slider into the slide groove and the first positioning block into the positioning groove.

7. A current loop terminal assembly structure according to any one of claims 1-2 or 4-6, characterized in that: One side wall of the base (11) is recessed inward to form a plurality of positioning holes (114), and the other side wall is protruded outward to form a second positioning block (115) adapted to the positioning holes, and adjacent bases can be detachably connected by inserting the second positioning block into the positioning hole.

8. A current loop terminal assembly structure according to claim 7, characterized in that: The input port (1111) is located at an end of the first conductor away from the second conductor, the first elastic sheet (1112) is located at an end of the first conductor close to the second conductor, and the first short-circuit interface (1113) is located on the top end surface of the first conductor; The base (11) is provided with a first wiring slot (116) matching the input port on the side wall, and a first slot hole (117) matching the first short-circuit interface and a second slot hole (118) matching the test socket (13) are provided on the top.

9. A current loop terminal assembly structure according to claim 8, characterized in that: A second mounting hole (1114) is provided on the top end surface of the first conductor (111) between the input port (1111) and the first short-circuit interface, the second mounting hole is connected to the input port, and a third slot (119) matching the second mounting hole is provided on the top of the base; The top end surface of the third conductor (121) is provided with a third mounting hole (1213) connected to the output port (1211), and the plug-in terminal is provided with a fourth slot hole (122) matching the third mounting hole at the top.

10. A current loop terminal assembly structure according to claim 9, characterized in that: The side walls of the outermost current loop terminal bases (11) detachably mounted on the mounting rail in sequence protrude outwards to form a first mounting portion (1110), and the side walls of the corresponding plug-in terminals (12) protrude outwards to form a second mounting portion (123) matching the first mounting portion.

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