A multi-phase pole unit independently broken intelligent measuring switch

Abstract

The application provides a kind of multi-phase pole unit independent breaking intelligent measurement switch, it is related to power equipment technical field, including shell, positioning bolt on shell screw connection, and a plurality of phase pole units are arranged in shell, further comprising: connecting block, it is worn in wiring hole, one end of connecting block is provided with wire hole that penetrates the end surface;Limiting component, it is installed on connecting block, part of structure of limiting component extends into wire hole and abuts to the surface of wire worn in wire hole;Positioning assembly, it is vertically slidingly installed in sliding slot that is opened in connecting block, sliding slot penetrates connecting block along vertical direction and is communicated with wire hole, the bottom end surface of positioning assembly is in contact with the wire body worn in wire hole;When connecting block is worn in wiring hole, positioning assembly is located directly below positioning bolt.The application realizes stable electrical connection of wire body and terminal board, axial positioning of connecting block in wiring hole and independent assembly of each phase pole unit wiring structure.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, specifically to an intelligent measurement switch with independent disconnection of multi-phase pole units. Background Technology

[0002] Intelligent measuring switches are intelligent power devices that integrate power metering, protection, control, and communication. They are widely used in low-voltage power distribution systems to realize the normal connection and disconnection of power distribution lines and the real-time monitoring of electrical quantities such as voltage, current, power, and energy. Intelligent measuring switches with independent disconnection of multi-phase pole units refer to intelligent measuring switches with multiple phase pole units arranged side-by-side in the casing, each capable of independently completing the connection and disconnection operations.

[0003] In existing technologies, the wire connection of intelligent measuring switches generally adopts a structure of direct screw pressing and fixing. Specifically, a terminal block is fixedly installed on the bottom wall of the wiring hole in the housing. After the wire is inserted through the wiring hole, it is placed on the upper surface of the terminal block. By rotating the bolt threaded to the housing, the bottom end of the bolt directly presses against the wire body, pressing the wire tightly against the upper surface of the terminal block, thus achieving electrical connection between the wire and the terminal block. In some existing technologies, a locking component that cooperates with the bolt is also provided in the wiring hole to limit the bolt and prevent it from loosening. In addition, some existing technologies include a light source, reflector, and photoelectric sensor in the junction box to determine whether the wiring is loose by detecting changes in the position of the terminal block.

[0004] The aforementioned existing technical solutions have the following drawbacks:

[0005] 1. In the method of fixing wires by bolts directly pressing against them, the wires and the terminal block are kept in contact only by the pressure at the end of the bolts. During long-term operation of the equipment, factors such as thermal expansion and contraction and mechanical vibration can cause the wires to loosen, leading to increased contact resistance and excessive temperature rise at the connection point, which may even cause a fire in severe cases.

[0006] 2. When inserting the wire into the terminal, the operator needs to hold the wire with their hand to keep the wire end flat inside the terminal. Shaking the hand may cause the wire connection to be unstable, affecting signal transmission and measurement accuracy. When the wire is released, the wire end will fall out of the terminal and needs to be re-inserted, which will affect the wiring speed.

[0007] 3. Although there are existing solutions in the technology that use wire clamping mechanisms to pre-clamp the wires, this solution only solves the problem of temporary fixation during wire insertion. After the bolts are tightened, the wires and the terminal block are still in contact only by the pressure of the bolts, and the risk of loosening after long-term use still exists.

[0008] 4. After the connecting block (or wiring strip) is inserted into the wiring hole, there is a lack of an effective axial positioning structure to fix the position of the connecting block in the wiring hole. In some existing technologies, the connecting block is detachably connected to the terminal block by screws, but the screw connection requires additional tightening operations, and the screws must be loosened before disassembly, which cannot achieve quick plug-in assembly.

[0009] 5. As multi-phase intelligent measurement switches develop towards modularity and independent disconnection, the requirements for the independent wiring of each phase unit are constantly increasing. However, the existing wiring structure requires inserting wires into the wiring holes one by one and tightening bolts individually during assembly, which is cumbersome and cannot meet the assembly requirements of independent and quick connection of each phase.

[0010] To address the aforementioned issues, this application provides an intelligent measuring switch with independent disconnection of multi-phase pole units, aiming to achieve stable electrical connection between the conductor and the terminal block, axial positioning of the connecting block within the wiring hole, and independent and rapid assembly of the wiring structure of each phase pole unit. Summary of the Invention

[0011] To address the above problems, this invention provides an intelligent measurement switch with independent disconnection of multi-phase pole units.

[0012] To achieve the above objectives, the present invention provides the following technical solution: an intelligent measuring switch with independent disconnection of multi-phase pole units, comprising a housing, a positioning bolt threaded onto the housing, and multiple phase pole units disposed within the housing. A wiring hole for the conductor body to pass through is provided on the side of the housing. The positioning bolt is vertically arranged with its bottom end extending into the wiring hole. A wiring plate is fixedly disposed on the bottom wall of the wiring hole. The switch also includes:

[0013] A connecting block is inserted into a wiring hole, and one end of the connecting block has a wire hole that passes through the end face of that end;

[0014] A limiting component is installed on the connecting block. Part of the limiting component extends into the wire hole and abuts against the surface of the wire passing through the wire hole.

[0015] The positioning component is slidably installed in the sliding groove opened on the connecting block along the vertical direction. The sliding groove passes through the connecting block vertically and communicates with the wire hole. The bottom end face of the positioning component is in close contact with the wire body passing through the wire hole.

[0016] When the connecting block is inserted into the wiring hole, the positioning component is located directly below the positioning bolt;

[0017] When the wire body is connected, the wire body is inserted into the wire hole and fixed in position by the limiting component. The connecting block is inserted into the wiring hole together with the wire body. Rotating the positioning bolt, the bottom end of the positioning bolt pushes the positioning component to slide downward in the sliding groove. The bottom end face of the positioning component presses against the wire body so that the wire body fits against the upper surface of the terminal block. The positioning component is engaged and fixed with the terminal block. The connecting block is limited in the axial direction of the wiring hole.

[0018] Preferably, the positioning component includes a positioning post, an elastic element, and a positioning structure. The positioning post is slidably inserted vertically into the sliding groove. The elastic element is installed in the sliding groove and its two ends are respectively connected to the positioning post and the groove wall of the sliding groove. The positioning structure is disposed on the upper surface of the terminal block and located directly below the positioning post.

[0019] When the elastic element is in its natural state, the bottom end face of the positioning post is located above the wire hole, and the positioning post is separated from the positioning structure.

[0020] When the positioning bolt pushes the positioning post downward, the bottom end face of the positioning post abuts against the wire body and presses the wire body against the upper surface of the terminal block. At the same time, the bottom end of the positioning post is embedded in the positioning structure, and the connecting block is limited in the axial direction of the wiring hole.

[0021] Preferably, the elastic element is a positioning spring, which is sleeved on the column body of the positioning post. The top end of the positioning spring is fixedly connected to the top end of the positioning post, and the bottom end of the positioning spring is fixedly connected to the bottom wall of the sliding groove.

[0022] Preferably, the positioning structure is a positioning groove formed on the upper surface of the terminal block, the positioning groove is located directly below the positioning post, and the bottom end face of the positioning post is provided with a positioning protrusion that matches the shape of the positioning groove.

[0023] Preferably, the bottom end face of the positioning post is provided with a wire receiving groove. The wire receiving groove is located in the middle of the positioning protrusion and extends through both sides of the positioning protrusion along the axial direction of the wire hole. The cross-section of the wire receiving groove is arc-shaped and the arc diameter is consistent with the outer diameter of the wire. The inner wall of the wire receiving groove is in close contact with the wire body. The opening position of the positioning groove is provided with a positioning groove that matches the wire receiving groove.

[0024] Preferably, the limiting component includes a limiting block and a return spring. A limiting hole is provided on the top hole wall at the opening position of the wire hole, which is in communication with the wire hole. The limiting block is slidably inserted into the limiting hole. One end of the limiting block extends into the wire hole and abuts against the surface of the wire body. The end of the limiting block inserted into the limiting hole is installed on the bottom wall of the limiting hole through a telescopic rod. The return spring is movably sleeved on the telescopic rod and its two ends are respectively connected to the other end of the limiting block and the bottom of the limiting hole. The end face of the limiting block that extends into the wire hole is a bevel.

[0025] Preferably, there is a gap between the end face of the connecting block facing away from the outer shell and the side of the terminal block. When the positioning bolt pushes the positioning component to slide downward, the positioning component presses the wire body into the gap. The wire body bends and fits against the side and top surface of the terminal block within the gap.

[0026] Preferably, each phase pole unit inside the housing is provided with a wiring hole, a connecting block, a limiting component and a positioning component, and the connecting block, limiting component and positioning component of each phase pole unit are independent of each other.

[0027] Preferably, the housing also includes a comprehensive protection module and a communication module, and a connection structure. Both the comprehensive protection module and the communication module have connectors at their bottoms. The comprehensive protection module and the communication module are connected to the connection structure via the connectors, and the connectors and the connection structure are detachably connected.

[0028] The beneficial effects of this invention are:

[0029] 1. Before the connecting block is inserted into the wiring hole, the wire is first inserted into the wire hole and pre-fixed by the limiting component. The connecting block and the wire are then inserted into the wiring hole as a whole, and the final crimping is completed by rotating the positioning bolt. This assembly method moves the wire positioning process to the outside of the connecting block, providing ample operating space and eliminating the need for wire alignment in the narrow wiring hole, thus reducing the difficulty of wiring.

[0030] 2. When the positioning bolt rotates, it pushes the positioning component downwards along the sliding groove. The bottom end face of the positioning component presses against the wire body, causing the wire to adhere to the upper surface of the terminal block. After the positioning component is locked in place with the terminal block, it simultaneously achieves the electrical connection between the wire and the terminal block and the axial positioning of the connecting block in the wiring hole. One fastening process completes two functions, shortening the wiring operation time.

[0031] 3. The positioning protrusion on the bottom end face of the positioning post matches the shape of the positioning groove on the upper surface of the wiring board. When the positioning bolt pushes the positioning post downward, the bottom end of the positioning post is embedded in the positioning structure, and the connecting block is limited axially in the wiring hole. This limiting method does not require additional fasteners. During disassembly, simply rotate the positioning bolt in the opposite direction, and the positioning post will reset under the action of the elastic element, allowing the connecting block to be removed.

[0032] 4. The conductor receiving groove at the bottom end of the positioning post has an arc-shaped cross-section, and the arc diameter is consistent with the outer diameter of the conductor. When the positioning post presses against the conductor, the inner wall of the conductor receiving groove is in close contact with the conductor body, which increases the contact area between the conductor and the positioning post and avoids local damage to the conductor body caused by point contact.

[0033] 5. One end of the limiting block in the limiting assembly extends into the wire hole and abuts against the surface of the wire. After the wire is passed through the wire hole, it is fixed by the limiting block, maintaining the position of the wire in the wire hole without the operator having to hold it by hand, thus avoiding the repeated operation of re-threading the wire after it slips out of their hands.

[0034] 6. Each phase pole unit inside the housing is equipped with a wiring hole, a connecting block, a limit component, and a positioning component. The connecting block, limit component, and positioning component of each phase pole unit are independent of each other. The wiring structure of each phase pole unit does not interfere with each other, and can realize independent plugging and disassembly of a single phase, meeting the modular assembly requirements of multi-phase intelligent measurement switches.

[0035] 7. The integrated protection module and communication module housed within the casing are connected to the connecting structure via connectors, and the connection between the connectors and the connecting structure is detachable. The integrated protection module and communication module can be individually plugged in and replaced, further improving the product's maintainability. Attached Figure Description

[0036] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0037] Figure 1 This is a simplified structural diagram of an intelligent measurement switch with independent disconnection of multi-phase pole units proposed in this invention.

[0038] Figure 2 This is a schematic diagram of the cross-sectional structure of the connecting wire portion of an intelligent measurement switch with independently disconnected multi-phase pole units proposed in this invention.

[0039] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0040] Figure 4 This is a schematic diagram of the connecting block and terminal block structure of the present invention.

[0041] Figure 5 This is a bottom view of the connecting block and terminal block of the present invention.

[0042] Figure 6 This is a bottom view of the cross-section of the connecting block of the present invention.

[0043] Figure 7 This is a schematic diagram of the internal cross-sectional structure of the connecting block of the present invention.

[0044] Figure 8 This is a schematic diagram of the cross-sectional structure of the conductor body of the present invention passing through the conductor hole.

[0045] Figure 9This is a schematic diagram of the cross-sectional structure of the connecting block of the present invention placed on the terminal block.

[0046] Figure 10 This is a schematic diagram of the contact cross-section structure between the wire and the terminal block of the present invention.

[0047] In the diagram: 1. Outer shell; 2. Wiring hole; 3. Terminal block; 4. Positioning bolt; 5. Connecting block; 6. Sliding groove; 7. Positioning post; 8. Wire hole; 9. Limiting hole; 10. Telescopic rod; 11. Return spring; 12. Limiting block; 13. Positioning groove; 14. Positioning spring; 15. Positioning protrusion; 16. Wire receiving groove; 17. Positioning groove; 18. Wire body. Detailed Implementation

[0048] To make the technical means, creative features, achieved objectives, and effects of this invention readily understandable, the invention is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this invention and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention.

[0049] Given the ongoing advancement of intelligent power system construction, intelligent metering switches, as key equipment in low-voltage power distribution, directly impact the stability of power grid operation and maintenance costs through their wiring reliability and assembly efficiency. Multi-phase pole independent unit intelligent metering switches, due to their advantages of independent phase control and non-interference, are increasingly widely used in distribution substations and user-side metering boxes. However, in existing technologies, the wiring method for these switches still generally employs a fixed structure where bolts directly press against the conductors. After the conductor is inserted into the wiring hole, it requires manual support for positioning, and then the bolts are rotated to press the conductor firmly onto the terminal block. In this operation, the conductor and terminal block maintain contact solely through the pressure at the bolt end. During long-term operation, thermal expansion and contraction, as well as mechanical vibration, can easily cause the conductor to loosen, leading to increased contact resistance and excessive temperature rise at the wiring point. Furthermore, the lack of an axial positioning structure after the connecting block passes through the wiring hole makes it prone to movement during use. The wiring operations for each phase pole unit are independent and repetitive, resulting in low assembly efficiency.

[0050] This invention provides an intelligent measuring switch with independent unit disconnection for multiple phase poles. The switch pre-fixes the wires via a limiting component on the connecting block, and inserts the connecting block and wires as a whole into the wiring hole. When the positioning bolt is rotated, the positioning component slides downwards along the sliding groove, its bottom end pressing the wires against the upper surface of the wiring plate and simultaneously engaging and fixing it with the wiring plate, thus limiting the axial movement of the connecting block in the wiring hole. A single tightening process simultaneously completes the electrical connection of the wires and the positioning of the connecting block. The connecting blocks, limiting components, and positioning components of each phase pole unit are independent of each other, allowing for independent single-phase insertion and disassembly.

[0051] Example 1: Reference Figures 1-10 The intelligent measuring switch with independent disconnection of multi-phase pole units shown includes a housing 1, a positioning bolt 4 threaded onto the housing 1, and multiple phase pole units disposed in the housing 1. A wiring hole 2 for the wire body 18 to pass through is provided on the side of the housing 1. The positioning bolt 4 is vertically arranged and its bottom end extends into the wiring hole 2. A wiring plate 3 is fixedly disposed on the bottom wall of the wiring hole 2. The switch also includes:

[0052] The connecting block 5 is inserted into the wiring hole 2, and one end of the connecting block 5 has a wire hole 8 that passes through the end face of that end;

[0053] A limiting component is installed on the connecting block 5. Part of the limiting component extends into the wire hole 8 and abuts against the surface of the wire passing through the wire hole 8.

[0054] The positioning component is vertically slidably installed in the sliding groove 6 opened on the connecting block 5. The sliding groove 6 passes through the connecting block 5 vertically and communicates with the wire hole 8. The bottom end face of the positioning component is in close contact with the wire body passing through the wire hole 8.

[0055] When the connecting block 5 is inserted into the wiring hole 2, the positioning component is located directly below the positioning bolt 4;

[0056] When the wire body 18 is connected, the wire body 18 passes through the wire hole 8 and is fixed in position by the limiting component. The connecting block 5, together with the wire body 18, is inserted into the wiring hole 2. The positioning bolt 4 is rotated, and the bottom end of the positioning bolt 4 pushes the positioning component to slide downward in the sliding groove 6. The bottom end face of the positioning component presses against the wire body 18 so that the wire body 18 fits against the upper surface of the wiring plate 3, and the positioning component is engaged and fixed with the wiring plate 3. The connecting block 5 is limited in the axial direction of the wiring hole 2.

[0057] In this embodiment, when connecting the wire body 18, the wire body 18 is first inserted into the wire hole 8 on the end face of the connecting block 5. Part of the limiting component extends into the wire hole 8 and abuts against the surface of the wire body 18, completing the pre-fixation of the wire body 18 in the wire hole 8. Then, the connecting block 5, together with the wire body 18, is inserted into the wiring hole 2 along the axial direction until the annular limiting flange at the end of the connecting block 5 is attached to the outer wall of the outer shell 1. At this time, the positioning component is located directly below the positioning bolt 4. When the positioning bolt 4 is rotated, the bottom end of the positioning bolt 4 extends vertically into the wiring hole 2 and contacts the top end of the positioning component. When the positioning bolt 4 is rotated further, the bottom end of the positioning bolt 4 pushes the positioning component to slide vertically downward in the sliding groove 6 of the connecting block 5, and the bottom end face of the positioning component abuts against the wire hole 2. The wire body 18 is pressed against the upper surface of the terminal block 3. As the positioning bolt 4 continues to rotate, the positioning protrusion 15 at the bottom of the positioning component is embedded in the positioning groove 13 on the upper surface of the terminal block 3. The wire receiving groove 16 at the bottom of the positioning component presses against the wire body 18, so that the wire body 18 is in contact with the upper surface of the terminal block 3. At the same time, the wire body 18 pressed into the gap between the end face of the connecting block 5 away from the outside of the outer shell 1 and the side of the terminal block 3 is bent and in contact with the side of the terminal block 3. The engagement of the positioning protrusion 15 and the positioning groove 13 limits the connecting block 5 in the axial direction of the wiring hole 2. After the positioning bolt 4 stops rotating, the wire body 18 remains in contact with the upper surface of the terminal block 3, realizing the electrical connection between the wire body 18 and the terminal block 3. The pre-positioning of the conductor body 18 within the connecting block 5 is achieved by the limiting component. The positioning bolt 4 pushes the positioning component to simultaneously complete the crimping of the conductor body 18 with the terminal block 3 and the axial limiting of the connecting block 5 within the wiring hole 2. This solves the problems of loose connection of the conductor body 18 and axial movement of the connecting block 5. At the same time, it realizes the overall insertion and removal of the connecting block 5 and the conductor body 18, meeting the requirements for independent and rapid assembly of multi-phase pole units.

[0058] The positioning component is used to fix the wire body 18. This embodiment provides the following solution:

[0059] like Figures 1-3 and Figures 6-10 As shown, the positioning assembly includes a positioning post 7, an elastic element, and a positioning structure. The positioning post 7 is slidably inserted into the sliding groove 6 in a vertical direction. The elastic element is installed in the sliding groove 6 and its two ends are respectively connected to the positioning post 7 and the groove wall of the sliding groove 6. The positioning structure is set on the upper surface of the wiring plate 3 and located directly below the positioning post 7.

[0060] When the elastic element is in its natural state, the bottom end face of the positioning post 7 is located above the wire hole 8, and the positioning post 7 is separated from the positioning structure.

[0061] When the positioning bolt 4 pushes the positioning post 7 to slide downward, the bottom end face of the positioning post 7 abuts against the wire body 18 and presses the wire body 18 onto the upper surface of the terminal block 3. At the same time, the bottom end of the positioning post 7 is embedded in the positioning structure, and the connecting block 5 is limited in the axial direction of the wiring hole 2.

[0062] In this embodiment, in the initial state where the connecting block 5 passes through the wiring hole 2, the elastic element is in its natural state, and the bottom end face of the positioning post 7 is above the wire hole 8. At this time, there is a gap between the bottom end of the positioning post 7 and the positioning structure on the upper surface of the terminal block 3, and the positioning post 7 is separated from the positioning structure. When the positioning bolt 4 rotates and moves vertically downward, the bottom end of the positioning bolt 4 contacts the top end face of the positioning post 7 and pushes the positioning post 7 to slide downward in the sliding groove 6. During the downward movement of the positioning post 7, its bottom end face contacts the wire body 18 and pushes the wire body 18 to move towards the terminal block 3 until the wire body 18 moves downward. The conductor body 18 is pressed against the upper surface of the terminal block 3. When the positioning bolt 4 continues to rotate, the bottom end of the positioning post 7 is embedded in the positioning structure. The bottom end face of the positioning post 7 maintains a pressing state against the conductor body 18. At the same time, the engagement between the positioning post 7 and the positioning structure limits the connecting block 5 in the axial direction of the wiring hole 2, preventing the connecting block 5 from moving outward along the axial direction of the wiring hole 2. When the positioning bolt 4 rotates in the opposite direction, the positioning post 7 slides upward along the sliding groove 6 under the elastic restoring force of the elastic element. The bottom end of the positioning post 7 disengages from the positioning structure and leaves the surface of the conductor body 18, and the connecting block 5 can be removed outward along the axial direction of the wiring hole 2. Through the engagement between the positioning post 7 and the positioning structure, the electrical connection between the conductor body 18 and the terminal block 3 and the axial limitation of the connecting block 5 in the wiring hole 2 are completed simultaneously under the push of the positioning bolt 4. After the positioning bolt 4 is loosened, the elastic element causes the positioning post 7 to automatically reset, realizing the quick insertion and removal of the connecting block 5.

[0063] It is understandable that the position of the positioning post 7 can be defined in various ways. This embodiment provides the following solution:

[0064] like Figure 3 and Figures 6-10 As shown, the elastic element is a positioning spring 14, which is sleeved on the column body of the positioning post 7. The top end of the positioning spring 14 is fixedly connected to the top end of the positioning post 7, and the bottom end of the positioning spring 14 is fixedly connected to the bottom wall of the sliding groove 6.

[0065] In this embodiment, the positioning spring 14 is in its normal extended state under natural conditions. At this time, the bottom end face of the positioning post 7 is located above the wire hole 8. When the wire body 18 is inserted into the wire hole 8, there is a gap between the bottom end of the positioning post 7 and the wire body 18, allowing the wire body 18 to freely pass into the wire hole 8 without being blocked by the positioning post 7. When the positioning bolt 4 rotates and moves vertically downward, the bottom end of the positioning bolt 4 pushes the top end of the positioning post 7, causing the positioning post 7 to slide downward in the sliding groove 6. When the positioning post 7 moves downward, it drives the top end of the positioning spring 14 at its top to move downward synchronously. The bottom end of the positioning spring 14 is fixed to the bottom wall of the sliding groove 6. Therefore, the positioning spring 14 moves downward as the positioning post 7 moves downward. During the process, the positioning post 7 is compressed and undergoes elastic deformation. The bottom end of the positioning post 7 moves down into the wire hole 8 and contacts the wire body 18. It continues to push the wire body 18 downward until the wire body 18 is pressed against the upper surface of the terminal block 3. At the same time, the bottom end of the positioning post 7 is embedded in the positioning structure on the upper surface of the terminal block 3. When the positioning bolt 4 is rotated in the opposite direction to loosen, the bottom end of the positioning bolt 4 moves upward and separates from the top end face of the positioning post 7. The elastic restoring force of the positioning spring 14 pushes the top end of the positioning post 7 upward. The positioning post 7 slides upward along the sliding groove 6 to the reset position. The bottom end of the positioning post 7 separates from the wire body 18 and moves upward to above the wire hole 8. The positioning spring 14 returns to its natural extension state.

[0066] In this embodiment, the positioning spring 14 is fixedly connected at both ends to the top of the positioning post 7 and the bottom wall of the sliding groove 6, respectively. When the positioning bolt 4 pushes the positioning post 7 down, it stores elastic potential energy. When the positioning bolt 4 is loosened, it automatically drives the positioning post 7 to reset, so that the bottom of the positioning post 7 is always kept above the wire hole 8 in its natural state. This ensures that the wire body 18 is not blocked by the positioning post 7 each time it is inserted into the wire hole 8. After the positioning bolt 4 is loosened, it automatically releases the crimping state on the wire body 18, realizing the quick insertion and removal of the connecting block 5.

[0067] Example 2: In Example 1, the direct clamping connection between the bottom of the positioning post 7 and the terminal block 3 to the wire body 18 cannot guarantee a stable connection to the wire body 18. This example provides the following solution.

[0068] like Figure 6 and Figure 10As shown, the positioning structure is a positioning groove 13 formed on the upper surface of the terminal block 3. The positioning groove 13 is located directly below the positioning post 7. The bottom end face of the positioning post 7 is provided with a positioning protrusion 15 that matches the shape of the positioning groove 13. A wire receiving groove 16 is formed on the bottom end face of the positioning post 7. The wire receiving groove 16 is located in the middle of the positioning protrusion 15 and extends through both sides of the positioning protrusion 15 along the axial direction of the wire hole 8. The cross-section of the wire receiving groove 16 is arc-shaped and the arc diameter is consistent with the outer diameter of the wire. The inner wall of the wire receiving groove 16 is in close contact with the wire body 18. A positioning groove 17 that mates with the wire receiving groove 16 is formed at the opening of the positioning groove 13.

[0069] In this embodiment, when the positioning bolt 4 pushes the positioning post 7 to slide downward along the sliding groove 6, the wire receiving groove 16 at the bottom of the positioning post 7 first contacts the wire body 18. The arc-shaped inner wall of the wire receiving groove 16 fits against the wire body 18. As the positioning post 7 continues to slide downward, the wire receiving groove 16 presses against the wire body 18, causing the wire body 18 to move downward. The wire body 18 is pressed into the positioning groove 17 at the opening of the positioning groove 13. The wire receiving groove 16 and the positioning groove 17 clamp the wire body 18 from the upper and lower sides. The positioning post 7 continues to slide downward until the positioning protrusion 15 is embedded in the positioning groove 13. The outer wall of the positioning protrusion 15 fits against the inner wall of the positioning groove 13. The connecting block 5 is limited in the axial direction of the wiring hole 2 by the engagement of the positioning protrusion 15 and the positioning groove 13. The fit between the arc-shaped inner wall of the wire receiving groove 16 and the wire body 18 remains unchanged after the positioning protrusion 15 is embedded in the positioning groove 13. The engagement of the positioning protrusion 15 and the positioning groove 13 limits the connection block 5 in the axial direction of the wiring hole 2. The wire receiving groove 16 and the positioning groove 17 clamp the wire body 18 from the upper and lower sides, keeping the wire body 18 in contact with the upper surface of the terminal block 3. At the same time, the contact between the arc-shaped inner wall of the wire receiving groove 16 and the wire body 18 increases the contact area, avoiding local compression damage to the wire body 18 by the positioning post 7.

[0070] Example 3: Regarding the pre-fixation of the position of the wire body 18 inserted into the wire hole 8 by the limiting component, this example provides the following solution.

[0071] like Figures 6-10 As shown, the limiting component includes a limiting block 12 and a return spring 11. A limiting hole 9 is provided on the top hole wall at the opening position of the wire hole 8, which is in communication with the wire hole 8. The limiting block 12 is slidably inserted into the limiting hole 9. One end of the limiting block 12 extends into the wire hole 8 and abuts against the surface of the wire body 18. One end of the limiting block 12 inserted into the limiting hole 9 is installed on the bottom wall of the limiting hole 9 through a telescopic rod 10. The return spring 11 is movably sleeved on the telescopic rod 10 and its two ends are respectively connected to the other end of the limiting block 12 and the bottom of the limiting hole 9. The end face of the limiting block 12 that extends into the wire hole 8 is a bevel.

[0072] In this embodiment, when the conductor body 18 is inserted into the conductor hole 8 opening on the end face of the connecting block 5, the end of the conductor body 18 first contacts the inclined end face of the limiting block 12 extending into the conductor hole 8. As the conductor body 18 continues to advance into the conductor hole 8, the conductor body 18 slides along the inclined end face of the limiting block 12 and pushes the limiting block 12 back into the limiting hole 9. When the limiting block 12 slides into the limiting hole 9, it causes the telescopic rod 10 to shorten, and the return spring 11 is compressed and generates elastic deformation. When the conductor body 18 passes through the conductor hole 8 to the predetermined position, the pushing force of the conductor body 18 on the inclined end face of the limiting block 12 disappears, and the elastic restoring force of the return spring 11 pushes the limiting block 12 to slide along the limiting hole 9 into the conductor hole 8. The inclined end face of the limiting block 12 abuts against the surface of the conductor body 18. The position of 8 within the wire hole 8 is fixed by the limiting block 12; when the positioning bolt 4 pushes the positioning post 7 downward and presses against the wire body 18, the wire body 18 is subjected to downward pressure, and the wire body 18 tends to slide downward along the inclined end face of the limiting block 12. Under the push of the wire body 18, the limiting block 12 retracts into the limiting hole 9, and the return spring 11 is compressed again. Under the push of the positioning post 7, the wire body 18 moves towards the terminal block 3, and the inclined end face of the limiting block 12 remains in contact with the wire body 18; after the positioning post 7 presses the wire body 18 onto the upper surface of the terminal block 3, the wire body 18 no longer moves, and the return spring 11 pushes the limiting block 12 into the wire hole 8 and keeps the inclined end face of the limiting block 12 in contact with the surface of the wire body 18. The limiting block 12 achieves pre-fixation of the wire body 18 in the wire hole 8 by abutting its inclined end face with the wire body 18. When the wire body 18 is inserted, the inclined end face guides the wire body 18 to pass smoothly and automatically springs back to clamp. When the positioning post 7 pushes the wire body 18 to move downward, the inclined end face allows the wire body 18 to slide downward without jamming, and maintains the abutting state after the wire body 18 is in place, thus achieving full-process fixation of the position of the wire body 18 in the wire hole 8.

[0073] like Figures 6-10 As shown, there is a gap between the end face of the connecting block 5 facing away from the outer shell 1 and the side of the terminal block 3. When the positioning bolt 4 pushes the positioning component to slide downward, the positioning component presses the wire body 18 into the gap. The wire body 18 bends in the gap and fits against the side and top surface of the terminal block 3. The gap between the end face of the connecting block 5 and the side of the terminal block 3 provides bending space for the wire body 18. After bending in the gap, the wire body 18 fits against the side and top surface of the terminal block 3, increasing the contact area between the wire body 18 and the terminal block 3. The elastic restoring force generated by the bending of the wire body 18 and the clamping effect of the gap together prevent the wire body 18 from coming out axially along the wiring hole 2, improving the reliability of the electrical connection between the wire body 18 and the terminal block 3.

[0074] Each phase pole unit inside the outer casing 1 is provided with a wiring hole 2, a connecting block 5, a limiting component and a positioning component, and the connecting block 5, the limiting component and the positioning component of each phase pole unit are independent of each other.

[0075] In this embodiment, when a wiring fault occurs in a phase unit, simply loosen the positioning bolt 4 of that phase unit and remove the connecting block 5 from the corresponding wiring hole 2. This allows for individual repair or replacement of the connecting block 5, limiting component, or positioning component of that phase unit, without affecting the normal operation of other phase units. The conductor body 18 of each phase unit can be independently passed through the conductor hole 8 of its corresponding connecting block 5 and independently crimped. The connecting block 5 of each phase unit can be independently inserted into its corresponding wiring hole 2 and independently locked by its corresponding positioning bolt 4. The wiring operation of any one phase unit is independent of the assembly state of other phase units. The independent wiring structure of each phase unit enables independent disassembly, repair, and replacement of a single phase unit. A wiring fault or maintenance operation in one phase unit does not affect the normal operation of other phase units. Furthermore, the connecting block 5 of each phase unit can independently complete conductor pre-fixation and insertion assembly, without being restricted by the assembly sequence of other phase units, meeting the needs of modular assembly and rapid on-site maintenance of multi-phase intelligent measurement switches.

[0076] The housing 1 also contains a comprehensive protection module and a communication module. The housing 1 contains a connection structure. The bottom of both the comprehensive protection module and the communication module has a connector. The comprehensive protection module and the communication module are connected to the connection structure through the connector. The connector and the connection structure are detachably connected.

[0077] In this embodiment, when the integrated protection module and communication module are installed inside the housing 1, the connectors at the bottom of the integrated protection module and communication module are aligned with the connecting structure inside the housing 1 and inserted vertically. The connectors and the connecting structure achieve electrical and signal connections through the plug-in engagement, and the connection between the connectors and the connecting structure is detachable. When the integrated protection module or communication module needs to be repaired or replaced, the operator pulls the integrated protection module or communication module vertically upwards, the connectors separate from the connecting structure, the integrated protection module or communication module is taken out from the housing 1, and the new integrated protection module or communication module is inserted vertically into the housing 1. The connectors at the bottom are then plugged into the connecting structure again to complete the module replacement. The integrated protection module and communication module achieve electrical connection and signal transmission with other electrical components inside the housing 1 through the plug-in engagement of the connectors and the connecting structure, without the need for wires or bolts for connection. The integrated protection module and the communication module are connected by detachable connectors to the connection structure, which enables independent and quick installation and replacement of the integrated protection module and the communication module. No rewiring is required when replacing the module. The connection between the connectors and the connection structure ensures the reliability of electrical and signal connections after each installation, avoiding the problems of loose connection and poor contact caused by repeated disassembly and assembly in wire connection methods.

[0078] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smart measuring switch with independent disconnection of multi-phase pole units, comprising a housing (1), a positioning bolt (4) threaded onto the housing (1), and multiple phase pole units disposed in the housing (1), wherein the side of the housing (1) is provided with a wiring hole (2) for a conductor body (18) to pass through, the positioning bolt (4) is arranged vertically and its bottom end extends into the wiring hole (2), and a wiring plate (3) is fixedly disposed on the bottom wall of the wiring hole (2), characterized in that, Also includes: The connecting block (5) is inserted into the wiring hole (2), and one end of the connecting block (5) has a wire hole (8) that passes through the end face of the end. The limiting component is installed on the connecting block (5). Part of the limiting component extends into the wire hole (8) and abuts against the surface of the wire passing through the wire hole (8). The positioning component is slidably installed in the sliding groove (6) opened on the connecting block (5) in the vertical direction. The sliding groove (6) passes through the connecting block (5) in the vertical direction and communicates with the wire hole (8). The bottom end face of the positioning component is in close contact with the wire body that passes through the wire hole (8). When the connecting block (5) is inserted into the wiring hole (2), the positioning component is located directly below the positioning bolt (4); When the wire body (18) is connected, the wire body (18) is inserted into the wire hole (8) and fixed in position by the limiting component. The connecting block (5) is inserted into the wiring hole (2) together with the wire body (18). The positioning bolt (4) is rotated, and the bottom end of the positioning bolt (4) pushes the positioning component to slide downward in the sliding groove (6) in the vertical direction. The bottom end face of the positioning component presses against the wire body (18) so that the wire body (18) fits against the upper surface of the wiring plate (3). The positioning component is engaged and fixed with the wiring plate (3). The connecting block (5) is limited in the axial direction of the wiring hole (2).

2. The intelligent measuring switch with independent disconnection of multi-phase pole units according to claim 1, characterized in that: The positioning component includes a positioning post (7), an elastic element and a positioning structure. The positioning post (7) slides vertically through the sliding groove (6). The elastic element is installed in the sliding groove (6) and its two ends are respectively connected to the positioning post (7) and the groove wall of the sliding groove (6). The positioning structure is set on the upper surface of the wiring board (3) and located directly below the positioning post (7). When the elastic element is in its natural state, the bottom end face of the positioning post (7) is located above the wire hole (8), and the positioning post (7) is separated from the positioning structure; When the positioning bolt (4) pushes the positioning post (7) to slide downward, the bottom end face of the positioning post (7) abuts against the wire body (18) and presses the wire body (18) onto the upper surface of the terminal block (3). At the same time, the bottom end of the positioning post (7) is embedded in the positioning structure, and the connecting block (5) is limited in the axial direction of the wiring hole (2).

3. The intelligent measuring switch with independent disconnection of multi-phase pole units according to claim 2, characterized in that: The elastic element is a positioning spring (14). The positioning spring (14) is sleeved on the column of the positioning column (7). The top end of the positioning spring (14) is fixedly connected to the top end of the positioning column (7), and the bottom end of the positioning spring (14) is fixedly connected to the bottom wall of the sliding groove (6).

4. The intelligent measuring switch with independent disconnection of multi-phase pole units according to claim 2, characterized in that: The positioning structure is a positioning groove (13) opened on the upper surface of the terminal block (3). The positioning groove (13) is located directly below the positioning post (7). The bottom end face of the positioning post (7) is provided with a positioning protrusion (15) that matches the shape of the positioning groove (13).

5. The intelligent measuring switch with independent disconnection of multi-phase pole units according to claim 4, characterized in that: The bottom end face of the positioning post (7) is provided with a wire receiving groove (16). The wire receiving groove (16) is located in the middle of the positioning protrusion (15) and passes through both sides of the positioning protrusion (15) along the axial direction of the wire hole (8). The cross section of the wire receiving groove (16) is arc-shaped and the arc diameter is consistent with the outer diameter of the wire. The inner wall of the wire receiving groove (16) is in close contact with the wire body (18). The opening position of the positioning groove (13) is provided with a positioning groove (17) that cooperates with the wire receiving groove (16).

6. The intelligent measuring switch with independent disconnection of multi-phase pole units according to claim 5, characterized in that: There is a gap between the end face of the connecting block (5) facing away from the outside of the outer shell (1) and the side of the terminal block (3). When the positioning bolt (4) pushes the positioning component to slide down, the positioning component presses the wire body (18) into the gap. The wire body (18) bends in the gap and fits against the bottom wall of the positioning groove (17).

7. The intelligent measuring switch with independent disconnection of multi-phase pole units according to claim 1, characterized in that: The limiting component includes a limiting block (12) and a return spring (11). The top hole wall of the wire hole (8) is provided with a limiting hole (9) that is in communication with the wire hole (8). The limiting block (12) slides through the limiting hole (9). One end of the limiting block (12) extends into the wire hole (8) and abuts against the surface of the wire body (18). One end of the limiting block (12) that passes through the limiting hole (9) is installed on the bottom wall of the limiting hole (9) through the telescopic rod (10). The return spring (11) is movably sleeved on the telescopic rod (10) and its two ends are respectively connected to the other end of the limiting block (12) and the bottom of the limiting hole (9). The end face of the limiting block (12) that extends into the wire hole (8) is a slope.

8. The intelligent measuring switch with independent disconnection of multi-phase pole units according to claim 1, characterized in that: Each phase pole unit inside the outer casing (1) is provided with a wiring hole (2), a connecting block (5), a limiting component and a positioning component, and the connecting block (5), the limiting component and the positioning component of each phase pole unit are independent of each other.

9. The intelligent measuring switch with independent disconnection of multi-phase pole units according to claim 1, characterized in that: The outer casing (1) is also equipped with a comprehensive protection module and a communication module. The outer casing (1) is equipped with a connection structure. The bottom of the comprehensive protection module and the communication module are equipped with plug-in parts. The comprehensive protection module and the communication module are connected to the connection structure through the plug-in parts. The plug-in parts and the connection structure are detachably connected.

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