A smart energy meter that prevents cable dragging

Abstract

This invention relates to the field of smart energy meter technology and discloses a smart energy meter with anti-cable dragging protection. The smart energy meter body includes a main body with terminals one, two, three, and four. An extension slot is formed on the main body, within which a conductive rod, a current-guiding mechanism, and a control mechanism are arranged. In this invention, by incorporating the conductive rod, current-guiding mechanism, and control mechanism within the main body, and utilizing the characteristic of the helical segment on the conductive rod generating a strong magnetic field under the action of an inrush current, the magnetic force component and the engaging component work together. This achieves automatic switching of the current-guiding mechanism from an on state to an off state when poor contact is caused by cable dragging, resulting in an inrush current. This quickly cuts off the electrical connection between the conductive rod and terminal two, effectively preventing continuous damage from the inrush current to the internal components and external wiring of the energy meter, and improving the electrical safety performance of the energy meter in complex installation environments.

Description

Technical Field

[0001] This invention relates to the field of smart energy meter technology, and more specifically to a smart energy meter that prevents cable dragging. Background Technology

[0002] Smart meters, as indispensable metering devices in power systems, are widely used in residential, commercial, and industrial electricity consumption sites. During the actual installation and use of smart meters, electrical connection to external cables is typically required via terminal blocks. However, due to complex installation environments, improper operation, or external forces such as accidental dragging or pulling of cables, the contact between the terminal blocks and the cables can easily become unstable, leading to poor contact.

[0003] Poor contact can cause voltage fluctuations and current interruptions, and may also generate instantaneous inrush currents when the voltage recovers. This can lead to abnormal electrical stress on the internal circuit components of the electricity meter, and in severe cases, even damage the meter or cause an electrical fire. Currently, most smart meters on the market are designed primarily for metering accuracy, communication functions, and basic protection, lacking proactive protection mechanisms against poor contact caused by cable dragging. Once a contact failure caused by dragging occurs, manual troubleshooting and rewiring are usually required, resulting in delayed response and high maintenance costs. Therefore, there is an urgent need for a smart meter that can automatically cut off the relevant circuits and prevent further damage from inrush currents when poor contact occurs due to cable dragging, thereby improving the safety and reliability of electricity meter use. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a smart energy meter that prevents cable dragging, so as to solve the problems existing in the background art.

[0005] The present invention provides the following technical solution: a smart energy meter for preventing cable dragging, comprising a smart energy meter body, wherein the smart energy meter body is provided with terminal one, terminal two, terminal three and terminal four, and an extension groove is provided on the smart energy meter body, wherein a conductive rod, a current guiding mechanism and a control mechanism are provided in the extension groove, the current guiding mechanism is provided with an on state and an off state, the on state of the current guiding mechanism is used to connect the conductive rod and terminal two, the off state of the current guiding mechanism is used to disconnect the conductive rod and terminal two, and the control mechanism is used to switch the current guiding mechanism from the on state to the off state when poor contact is caused by cable dragging.

[0006] Preferably, the conductive rod is fixedly installed in the extension groove, the conductive rod is provided with a helical segment, one end of the conductive rod is connected to terminal one, and the other end of the conductive rod is provided with a main contact.

[0007] Preferably, the flow guiding mechanism includes a rotating shaft, a flow guiding rod, an energized rod, and a rotating handle. The rotating shaft is rotatably installed in the extension groove, one end of the flow guiding rod is rotatably installed on the surface of the rotating shaft, and the other end of the flow guiding rod is connected to terminal two.

[0008] Preferably, one end of the energizing rod is fixedly installed on the surface of the rotating shaft, the other end of the energizing rod is provided with a secondary contact, and a coil spring is sleeved on the surface of the rotating shaft.

[0009] Preferably, a cover plate is fixedly connected to the opening of the extension groove, one end of the rotating handle is fixedly connected to one end of the rotating shaft, and the other end of the rotating handle passes through the cover plate and extends outward.

[0010] Preferably, the control mechanism includes a magnetic component and a locking component. The magnetic component includes a receiving frame, a magnet, and a guide rod. The guide rod is fixedly installed in the extension groove, the receiving frame is sleeved on the surface of the guide rod, and the magnet is fixedly installed on the receiving frame.

[0011] Preferably, a compression spring is sleeved on the surface of the guide rod, and a trigger block is fixedly connected to the receiving frame, with a first inclined surface provided on the trigger block.

[0012] Preferably, the engaging assembly includes a motion frame, a guide rod, a claw, and a sliding rod. The guide rod is fixedly installed in the extension groove, the motion frame is sleeved on the surface of the guide rod, an auxiliary spring is sleeved on the surface of the guide rod, and a second inclined surface is provided on the motion frame, which matches the first inclined surface.

[0013] Preferably, a sliding block is fixedly connected to the claw, a sliding rod is fixedly installed in the extension groove, the sliding block is sleeved on the surface of the sliding rod, an extension frame is fixedly installed on the claw, a connecting frame is fixedly installed on the motion frame, and a connecting rod is provided between the extension frame and the connecting frame, with one end of the connecting rod hinged to the extension frame and the other end hinged to the connecting frame.

[0014] Preferably, the motion frame is provided with a lever, one end of which is fixedly connected to the motion frame, and the other end of which passes through the cover plate and extends outward.

[0015] The beneficial effects of this invention are: In this invention, a conductive rod, a current-conducting mechanism, and a control mechanism are installed inside the electricity meter body. Utilizing the characteristic that the helical segment on the conductive rod generates a strong magnetic field under the action of an inrush current, the magnetic component and the locking component work together to drive the magnetic component. This achieves automatic switching of the current-conducting mechanism from the connected state to the interrupted state when poor contact is caused by cable dragging, triggering an inrush current. This quickly cuts off the electrical connection between the conductive rod and terminal two, effectively preventing continuous damage from the inrush current to the internal components and external wiring of the electricity meter, and improving the electrical safety performance of the electricity meter in complex installation environments. Furthermore, the ingenious structural design allows the magnetic component and locking component in the control mechanism to work together. After the fault is cleared, manual restoration can be performed via a lever and a rotating handle, making operation convenient and reducing maintenance difficulty. Moreover, this protection mechanism is entirely based on the physical characteristics of the electrical fault itself—triggered by the magnetic field generated by the inrush current—requiring no additional sensors or electronic control units. It has a fast response speed, high reliability, and does not increase the static power consumption of the electricity meter, making it highly practical and worthy of widespread application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 For the present invention Figure 1 Enlarged view of the structure at point A in the image.

[0019] Figure 3 This is a schematic diagram of the internal structure of the extension groove of the present invention.

[0020] Figure 4 This is a schematic diagram of the conductive rod, flow guiding mechanism, and control mechanism of the present invention.

[0021] Figure 5 This is a diagram showing the assembly of the conductive rod and the flow guiding mechanism of the present invention.

[0022] Figure 6 This is a schematic diagram of the conductive rod and control mechanism of the present invention.

[0023] Figure 7 This is a schematic diagram of the magnetic component structure of the present invention.

[0024] Figure 8 This is a schematic diagram of the snap-fit ​​assembly structure of the present invention.

[0025] Figure 9This is a schematic diagram of the claw structure of the present invention.

[0026] The attached figures are labeled as follows: 1. Smart energy meter body; 11. Terminal 1; 12. Terminal 2; 13. Terminal 3; 14. Terminal 4; 15. Extension slot; 16. Cover plate; 2. Conductive rod; 21. Helical segment; 22. Main contact; 3. Current guiding mechanism; 31. Rotating shaft; 32. Current guiding rod; 33. Current-carrying rod; 331. Secondary contact; 34. Coil spring; 35. Rotating handle; 4. Control mechanism; 41. Magnetic assembly; 411 412. Receiving frame; 413. Magnet; 414. Guide rod; 415. Compression spring; 416. Trigger block; 4151. First inclined plane; 42. Engaging assembly; 421. Moving frame; 4211. Second inclined plane; 422. Guide rod; 423. Auxiliary spring; 424. Connecting frame; 425. Claw; 4251. Sliding block; 426. Extension frame; 427. Connecting rod; 428. Sliding rod; 429. Toggle lever. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Reference Figures 1 to 4 This invention provides a smart energy meter that prevents cable dragging, including a smart energy meter body 1. The smart energy meter body 1 is provided with terminal 11, terminal 2 12, terminal 3 13 and terminal 4 14. An extension groove 15 is provided on the smart energy meter body 1. A conductive rod 2, a current guiding mechanism 3 and a control mechanism 4 are provided in the extension groove 15. The current guiding mechanism 3 is provided with an on state and an off state. The on state of the current guiding mechanism 3 is used to connect the conductive rod 2 and terminal 2 12. The off state of the current guiding mechanism 3 is used to disconnect the conductive rod 2 and terminal 2 12. The control mechanism 4 is used to switch the current guiding mechanism 3 from the on state to the off state when poor contact is caused by cable dragging. Terminal 11 and terminal 2 12 are used to connect the live wire, and terminal 3 13 and terminal 4 14 are used to connect the neutral wire.

[0029] Reference Figures 1 to 5 The conductive rod 2 is fixedly installed in the extension groove 15. A helical segment 21 is provided on the conductive rod 2. One end of the conductive rod 2 is connected to the terminal 11, and the other end of the conductive rod 2 is provided with a main contact 22. The helical segment 21 of the conductive rod 2 can efficiently concentrate magnetic flux when the impact current passes through, and instantly generate a magnetic field that is much stronger than that of an ordinary straight conductor, providing sufficient driving force for subsequent mechanical actions.

[0030] The flow guiding mechanism 3 includes a rotating shaft 31, a flow guiding rod 32, an energizing rod 33, and a rotating handle 35. The rotating shaft 31 is rotatably mounted in the extension groove 15. One end of the flow guiding rod 32 is rotatably mounted on the surface of the rotating shaft 31, and the other end of the flow guiding rod 32 is connected to terminal 12. One end of the energizing rod 33 is fixedly mounted on the surface of the rotating shaft 31, and the other end of the energizing rod 33 is provided with a secondary contact 331. A coil spring 34 is sleeved on the surface of the rotating shaft 31. A cover plate 16 is fixedly connected to the opening of the extension groove 15. One end of the rotating handle 35 is fixedly connected to one end of the rotating shaft 31, and the other end of the rotating handle 35 passes through the cover plate 16 and extends outward. The coil spring 34, as an energy storage element, is locked and stores elastic force under normal conditions. Once unlocked, it can quickly drive the secondary contact 331 to separate from the main contact 22, achieving millisecond-level circuit breaking. The rotating handle 35 extends outward through the cover plate 16, allowing manual reset without disassembling the meter after fault clearance, reducing maintenance difficulty and repair costs.

[0031] When in use, under normal working conditions of the smart energy meter body 1, the current guiding mechanism 3 remains in the connected state, the control mechanism 4 locks the energizing rod 33, the spring force of the coil spring 34 cannot be released, the auxiliary contact 331 and the main contact 22 remain tightly fitted, the current first enters terminal 11 from the live wire, and then the current passes through the conductive rod 2, the energizing rod 33 and the current guiding rod 32 in sequence, and then the current enters terminal 2 12 and flows out of the meter from the live wire; If the cable is dragged due to external factors, poor contact will occur between the terminals and wiring of the smart energy meter body 1. When the poor contact causes a brief interruption of voltage and then a rapid recovery, the capacitor inside the device will be repeatedly charged. This charging process will generate a huge surge current. When the surge current passes through the helical segment 21 of the conductive rod 2, the helical segment 21 will generate a strong magnetic field. Under the action of the magnetic field force, the control mechanism 4 will release the clamp on the energized rod 33. At this time, the spring force of the coil spring 34 will be released, and the spring force of the coil spring 34 will drive the energized rod 33 to rotate around the axis of the rotating shaft 31. The auxiliary contact 331 will separate from the main contact 22, realizing the circuit break. The current guiding mechanism 3 will switch from the connected state to the interrupted state, and the surge current will disappear. After that, the spring force of the compression spring 414 will be released and will drive the receiving frame 411 and the magnet 412 to move towards the helical segment 21 and return to the initial position. The spring force of the auxiliary spring 423 will be released and will drive the moving frame 421 to move upward, and the pawl 425 will return to the initial position.

[0032] In summary, by setting a helical segment 21 on the conductive rod 2, and cooperating with components such as the rotating shaft 31, guiding rod 32, energizing rod 33, and coil spring 34 in the current guiding mechanism 3, a mechanical rapid response interruption mechanism for inrush current is formed. When poor contact caused by cable dragging leads to an inrush current, the helical segment 21 instantly generates a strong magnetic field. This magnetic field can directly drive the control mechanism 4 to release the clamp on the energizing rod 33 without any electronic sensors or auxiliary power supply, thereby causing the spring force stored in the coil spring 34 to be released instantly, driving the auxiliary contact 331 to quickly separate from the main contact 22, thus interrupting the circuit. This process is triggered entirely by the physical characteristics of the electrical fault itself, with an extremely short response time. It can effectively suppress the continuous damage of the inrush current to the internal components and external circuits of the energy meter, significantly improving the electrical safety performance of the smart energy meter body 1 in complex installation environments. At the same time, this mechanical structure design is simple and reliable, does not increase the static power consumption of the energy meter, and has high practicality and promotional value.

[0033] Reference Figures 1 to 9 The control mechanism 4 includes a magnetic component 41 and a locking component 42. The magnetic component 41 includes a receiving frame 411, a magnet 412, and a guide rod 413. The guide rod 413 is fixedly installed in the extension groove 15. The receiving frame 411 is sleeved on the surface of the guide rod 413. The magnet 412 is fixedly installed on the receiving frame 411. A compression spring 414 is sleeved on the surface of the guide rod 413. A trigger block 415 is fixedly connected to the receiving frame 411. A first inclined surface 4151 is provided on the trigger block 415. The magnetic component 41 converts the magnetic force generated by the helical segment 21 into mechanical displacement. Under the action of the magnetic field, the magnet 412 drives the receiving frame 411 to move linearly along the guide rod 413. The compression spring 414 stores reset energy during this process. The first inclined surface 4151 on the trigger block 415 accurately converts the horizontal movement into a vertical thrust, providing a reliable driving force for the subsequent action of the locking component 42.

[0034] The engaging assembly 42 includes a motion frame 421, a guide rod 422, a claw 425, and a sliding rod 428. The guide rod 422 is fixedly installed in the extension groove 15. The motion frame 421 is sleeved on the surface of the guide rod 422. An auxiliary spring 423 is sleeved on the surface of the guide rod 422. A second inclined surface 4211 is provided on the motion frame 421, which matches the first inclined surface 4151. A sliding block 4251 is fixedly connected to the claw 425. The sliding rod 428 is fixedly installed in the extension groove 15. The sliding block 4251 is sleeved on the surface of the sliding rod 428. An extension frame 426 is fixedly installed on the claw 425. A connecting frame 424 is fixedly installed on the motion frame 421. A connecting rod 427 is provided between the extension frame 426 and the connecting frame 424. One end of the connecting rod 427 is hinged to the extension frame 426 and the other end is hinged to the connecting frame 424. A lever 429 is provided on the motion frame 421. One end of the lever 429 is fixedly connected to the motion frame 421, and the other end of the lever 429 passes through the cover plate 16 and extends outward. The locking assembly 42 achieves precise locking and unlocking functions through inclined plane engagement and linkage transmission. The second inclined plane 4211 engages with the first inclined plane 4151 to convert the vertical movement of the moving frame 421 into the horizontal opening action of the claw 425 along the sliding rod 428. The design of the lever 429 passing through the cover plate 16 allows maintenance personnel to manually unlock the device by simply pressing it down. After the lever 429 is released after the rotating handle 35 completes the reset, the auxiliary spring 423 automatically locks the device, making the operation extremely convenient.

[0035] When in use, under normal working conditions of the smart energy meter body 1, the current guiding mechanism 3 remains in the connected state, the claw 425 holds the power-conducting rod 33, the auxiliary contact 331 and the main contact 22 remain in close contact, the current first enters terminal 11 from the live wire, and then the current passes through the conductive rod 2, the power-conducting rod 33 and the current guiding rod 32 in sequence, and then the current enters terminal 2 12 and flows out of the meter from the live wire; If the cable is dragged by external factors, and the helical segment 21 generates a strong magnetic field instantly, under the action of the magnetic force, the receiving frame 411 and the magnet 412 move together along the guide rod 413 in the direction away from the helical segment 21. The compression spring 414 contracts and increases its elasticity under the compression of the receiving frame 411. The receiving frame 411 moves and drives the trigger block 415 to move synchronously. Simultaneously with the movement of the trigger block 415, the motion frame 421 moves downward along the guide rod 422 in cooperation with the first inclined surface 4151 and the second inclined surface 4211. The auxiliary spring 423 contracts and increases its elasticity under the compression of the motion frame 421. The movement of the motion frame 421 drives the claw 425 to move synchronously through the connecting frame 424, the connecting rod 427 and the extension frame 426. The sliding block 4251 slides synchronously along the sliding rod 428. The claw 425 is released from the surface of the energized rod 33. When the energized rod 33 is secured, the spring force of the coil spring 34 is released, the auxiliary contact 331 separates from the main contact 22, and the circuit is broken. The current guiding mechanism 3 switches from the connected state to the interrupted state, the impact current disappears, and then the spring force of the compression spring 414 is released and drives the receiving frame 411 and the magnet 412 to move towards the direction close to the helical segment 21 and return to the initial position. The spring force of the auxiliary spring 423 is released and drives the moving frame 421 to move upward, and the pawl 425 returns to the initial position. After troubleshooting and resolving the problem, the operator manually pushes the lever 429 downwards. Similarly, the moving frame 421 moves downwards along the guide rod 422, increasing the elastic force of the auxiliary spring 423. The pawl 425 moves synchronously with the moving frame 421. Then, the operator manually rotates the handle 35 to overcome the elastic force of the coil spring 34, causing the rotating shaft 31 to rotate around its own axis. The rotating shaft 31 rotates and drives the energized rod 33 to rotate synchronously around the axis of the rotating shaft 31. When the auxiliary contact 331 is tightly engaged with the main contact 22, the operator releases the lever 429, releasing the elastic force of the auxiliary spring 423. The elastic force of the auxiliary spring 423 drives the pawl 425 to lock the energized rod 33. At this time, the elastic force of the coil spring 34 cannot be released, and the current guiding mechanism 3 returns to the connected state.

[0036] In summary, this mechanism utilizes the strong magnetic field generated by the helical segment 21 on the conductive rod 2 under the impact current to directly drive the magnet 412 and the receiving frame 411 to move along the guide rod 413. Then, through the cooperation of the first inclined surface 4151 and the second inclined surface 4211, the linear motion is converted into the vertical displacement of the moving frame 421. This displacement is then transmitted via a linkage consisting of the connecting frame 424, the connecting rod 427, and the extension frame 426, ultimately causing the pawl 425 to smoothly release along the sliding rod 428. The entire transmission chain requires no electronic sensors, control chips, or auxiliary power supplies, fundamentally avoiding the risk of malfunction or failure of electronic components in strong electromagnetic environments. Furthermore, it does not increase the static power consumption of the energy meter and possesses extremely high reliability and anti-interference capabilities. After the fault is cleared, the mechanism has a convenient manual reset function. The staff does not need to disassemble the meter. They only need to push down the lever 429 that passes through the cover plate 16 to keep the claw 425 open. At the same time, they can turn the rotating handle 35 to overcome the spring force of the coil spring 34 and make the auxiliary contact 331 re-fit with the main contact 22. Finally, they can release the lever 429. The spring force of the auxiliary spring 423 will automatically drive the claw 425 to reset and lock. The current guiding mechanism 3 can then be restored to the normal connection state. The whole reset process is simple to operate and does not require special tools, which greatly reduces the difficulty of operation and maintenance and the time for manual troubleshooting.

[0037] Working principle of the present invention: Under normal working conditions, the current guiding mechanism 3 remains in the connected state, the claw 425 holds the power-conducting rod 33, the elastic force of the coil spring 34 cannot be released, the auxiliary contact 331 and the main contact 22 remain in close contact, the current first enters the terminal 11 from the live wire, the current then passes through the conductive rod 2, the power-conducting rod 33 and the current guiding rod 32 in sequence, and then the current enters the terminal 2 12 and flows out of the meter from the live wire.

[0038] If the cable is dragged due to external factors, poor contact will occur between the terminals and wiring of the smart energy meter body 1. When the poor contact causes a brief interruption of voltage and then a rapid recovery, the capacitor inside the device will be repeatedly charged. This charging process will generate a huge surge current. When the surge current passes through the helical segment 21 of the conductive rod 2, the helical segment 21 will generate a strong magnetic field. Under the action of the magnetic field force, the receiving frame 411 and the magnet 412 move together along the guide rod 413 in a direction away from the helical segment 21. The compression spring 414 contracts and increases its elasticity under the compression of the receiving frame 411. The movement of the receiving frame 411 drives the trigger block 415 to move synchronously.

[0039] Simultaneously with the movement of the trigger block 415, the motion frame 421 moves downward along the guide rod 422 under the cooperation of the first inclined surface 4151 and the second inclined surface 4211. The auxiliary spring 423 contracts and increases its elasticity under the compression of the motion frame 421. The movement of the motion frame 421 drives the claw 425 to move synchronously through the connecting frame 424, the connecting rod 427 and the extension frame 426. The sliding block 4251 slides synchronously along the sliding rod 428. The claw 425 releases from the surface of the energized rod 33 and releases its clamping on the energized rod 33. At this time, When the spring force of coil spring 34 is released, the spring force of coil spring 34 drives the energized rod 33 to rotate around the axis of rotating shaft 31, the auxiliary contact 331 separates from the main contact 22, realizing the circuit breaking, the current guiding mechanism 3 switches from the connected state to the interrupted state, the impact current disappears, and then the spring force of compression spring 414 is released and drives the receiving frame 411 and magnet 412 to move towards the direction close to the helical segment 21 and return to the initial position. The spring force of auxiliary spring 423 is released and drives the moving frame 421 to move upward, and the pawl 425 returns to the initial position.

[0040] After troubleshooting and resolving the problem, the operator manually pushes the lever 429 downwards. Similarly, the moving frame 421 moves downwards along the guide rod 422, increasing the elastic force of the auxiliary spring 423. The pawl 425 moves synchronously with the moving frame 421. Then, the operator manually rotates the handle 35 to overcome the elastic force of the coil spring 34, causing the rotating shaft 31 to rotate around its own axis. The rotating shaft 31 rotates and drives the energized rod 33 to rotate synchronously around the axis of the rotating shaft 31. When the auxiliary contact 331 is tightly engaged with the main contact 22, the operator releases the lever 429, releasing the elastic force of the auxiliary spring 423. The elastic force of the auxiliary spring 423 drives the pawl 425 to lock the energized rod 33. At this time, the elastic force of the coil spring 34 cannot be released, and the current guiding mechanism 3 returns to the connected state.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A smart energy meter designed to prevent cable dragging, comprising a smart energy meter body (1), characterized in that, The smart energy meter body (1) is provided with terminal 1 (11), terminal 2 (12), terminal 3 (13) and terminal 4 (14). The smart energy meter body (1) is provided with an extension groove (15). The extension groove (15) is provided with a conductive rod (2), a current guiding mechanism (3) and a control mechanism (4). The current guiding mechanism (3) is provided with an on state and an off state. The on state of the current guiding mechanism (3) is used to connect the conductive rod (2) and terminal 2 (12). The off state of the current guiding mechanism (3) is used to disconnect the conductive rod (2) and terminal 2 (12). The control mechanism (4) is used to switch the current guiding mechanism (3) from the on state to the off state when poor contact is caused by cable dragging.

2. The smart energy meter for preventing cable dragging according to claim 1, characterized in that, The conductive rod (2) is fixedly installed in the extension groove (15). A spiral segment (21) is provided on the conductive rod (2). One end of the conductive rod (2) is connected to terminal one (11), and the other end of the conductive rod (2) is provided with a main contact (22).

3. A smart energy meter for preventing cable dragging according to claim 2, characterized in that, The flow guiding mechanism (3) includes a rotating shaft (31), a flow guiding rod (32), an energizing rod (33), and a rotating handle (35). The rotating shaft (31) is rotatably installed in the extension groove (15). One end of the flow guiding rod (32) is rotatably installed on the surface of the rotating shaft (31), and the other end of the flow guiding rod (32) is connected to terminal two (12).

4. A smart energy meter for preventing cable dragging according to claim 3, characterized in that, One end of the energizing rod (33) is fixedly installed on the surface of the rotating shaft (31), and the other end of the energizing rod (33) is provided with a secondary contact (331). A coil spring (34) is sleeved on the surface of the rotating shaft (31).

5. A smart energy meter for preventing cable dragging according to claim 4, characterized in that, The extension groove (15) is fixedly connected to a cover plate (16), one end of the rotating handle (35) is fixedly connected to one end of the rotating shaft (31), and the other end of the rotating handle (35) passes through the cover plate (16) and extends outward.

6. A smart energy meter for preventing cable dragging according to claim 1, characterized in that, The control mechanism (4) includes a magnetic component (41) and a locking component (42). The magnetic component (41) includes a receiving frame (411), a magnet (412) and a guide rod (413). The guide rod (413) is fixedly installed in the extension groove (15). The receiving frame (411) is sleeved on the surface of the guide rod (413). The magnet (412) is fixedly installed on the receiving frame (411).

7. A smart energy meter for preventing cable dragging according to claim 6, characterized in that, A compression spring (414) is sleeved on the surface of the guide rod (413), and a trigger block (415) is fixedly connected on the support frame (411). A first inclined surface (4151) is provided on the trigger block (415).

8. A smart energy meter for preventing cable dragging according to claim 7, characterized in that, The engaging assembly (42) includes a motion frame (421), a guide rod (422), a claw (425), and a sliding rod (428). The guide rod (422) is fixedly installed in the extension groove (15). The motion frame (421) is sleeved on the surface of the guide rod (422). An auxiliary spring (423) is sleeved on the surface of the guide rod (422). A second inclined surface (4211) is provided on the motion frame (421), and the second inclined surface (4211) matches the first inclined surface (4151).

9. A smart energy meter for preventing cable dragging according to claim 8, characterized in that, A sliding block (4251) is fixedly connected to the claw (425), a sliding rod (428) is fixedly installed in the extension groove (15), the sliding block (4251) is sleeved on the surface of the sliding rod (428), an extension frame (426) is fixedly installed on the claw (425), a connecting frame (424) is fixedly installed on the motion frame (421), and a connecting rod (427) is provided between the extension frame (426) and the connecting frame (424). One end of the connecting rod (427) is hinged to the extension frame (426), and the other end is hinged to the connecting frame (424).

10. A smart energy meter for preventing cable dragging according to claim 9, characterized in that, The motion frame (421) is provided with a lever (429), one end of which is fixedly connected to the motion frame (421), and the other end of which passes through the cover plate (16) and extends outward.

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