Electric energy meter with security structure

Abstract

The present application relates to the technical field of electric energy meter, and discloses an electric energy meter with security and protection structure, which comprises a protective meter box, a box door arranged on the protective meter box, an electric energy meter arranged in the protective meter box, a protection mechanism arranged on the protective meter box, and a protection strip arranged on the box door, wherein the protection mechanism comprises a protection seat fixedly arranged on the protective meter box and a protection clamping piece fixedly arranged on the protection strip, and the protection seat is internally provided with a screw assembly matched with the protection clamping piece. The electric energy meter with security and protection structure significantly improves the protection performance of the electric energy meter through a three-stage buffer mechanism, greatly reduces the impact force of the box door on the protective meter box and the internal electric energy meter due to the excessive closing force of the box door through multi-stage buffer protection, effectively reduces the damage of the equipment caused by collision, prolongs the service life of the equipment, and reduces the maintenance cost and replacement frequency of the equipment.

Description

Technical Field

[0001] This invention belongs to the field of electrical energy meter technology, and particularly relates to an electrical energy meter with a security structure. Background Technology

[0002] With the rapid development of the economy, the demand for electricity from all walks of life is increasing, and the phenomenon of uneven electricity consumption at different times is becoming increasingly serious. In order to alleviate the contradiction between electricity supply and demand, adjust the load curve, and improve the uneven electricity consumption, the peak, flat, and valley time-of-use pricing system has been fully implemented. Electricity meters are one of the devices used in this system. As a key device for accurately measuring and recording users' electricity consumption, electricity meters are widely used in various electricity consumption scenarios, especially in situations involving residential, commercial, and industrial electricity consumption. Electricity meters are usually installed in dedicated meter boxes in outdoor environments to facilitate meter reading, maintenance, and other operations by power companies, while ensuring the fairness and accuracy of electricity metering.

[0003] However, although existing electricity meters meet basic electricity metering needs to a certain extent, they still have many shortcomings and deficiencies in practical applications, especially in terms of security and equipment protection. First, regarding anti-theft functions, the outdoor environment is relatively open, and there are cases of deliberate damage to electricity meters for the purpose of stealing electricity. Because traditional electricity meters lack an active alarm mechanism, when the meter box is damaged, the meter cannot detect it in time and send an alarm signal to relevant departments or personnel. This makes it difficult for power companies to detect and stop electricity theft in a timely manner, making it difficult to effectively curb electricity theft and causing continuous economic losses to power companies. Therefore, there are deficiencies and they cannot meet the needs of users. Thus, it is necessary to further improve them.

[0004] Therefore, in view of this, we will study and improve the existing structure and its shortcomings, and provide an electricity meter with a security structure in order to achieve a more practical value. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides an electricity meter with a security structure, which is achieved by the following specific technical means:

[0006] An electrical energy meter with a security structure includes a protective meter box, a door installed on the protective meter box, and an electrical energy meter installed inside the protective meter box. It also includes a protective mechanism installed on the protective meter box and a protective strip installed on the door.

[0007] The protective mechanism includes a protective base fixedly mounted on the protective housing, and a protective clip fixedly mounted on the protective strip;

[0008] The protective base is equipped with a spiral assembly that works in conjunction with the protective clip. The spiral assembly is equipped with a protective component that buffers the closing pressure of the cabinet door. The inner wall of the protective base is also equipped with a damping component, and the damping component is equipped with an alarm component for alarming when the cabinet door is opened.

[0009] As a further description of the above technical solution: Through multi-level buffer protection, the impact force of the door on the protective meter box and the internal power meter caused by excessive closing force is greatly reduced, effectively reducing the damage to the equipment caused by collision, extending the service life of the equipment, and reducing the maintenance cost and replacement frequency of the equipment.

[0010] Furthermore, the spiral assembly includes a spiral seat slidably installed inside the protective seat, and a spiral rod assembled on the spiral seat. The spiral seat has a spiral groove inside, and the spiral rod has a protrusion that cooperates with the spiral groove. The end of the spiral rod away from the spiral seat is rotatably connected to the protective seat through a fixed bearing. A support spring is fixedly connected between one side of the spiral seat and the inner wall of the protective seat.

[0011] As a further description of the above technical solution: when the screw rotates, the screw rod’s protrusions and the internal thread groove of the threaded seat form a preliminary buffer. Through the friction between the threads and the rotational resistance of the screw rod, some of the kinetic energy generated by the impact of the door is consumed, thus achieving a first-level buffering effect.

[0012] Furthermore, the spiral seat has a mounting groove on the side away from the spiral rod that is used in conjunction with the protective clip.

[0013] As a further description of the above technical solution: the setting of the mounting slot facilitates the precise insertion of the protective clips.

[0014] Furthermore, a limiting component is fixedly assembled on the outer periphery of the screw seat. The limiting component includes a limiting ring fixedly assembled on the outer periphery of the screw seat, and a limiting slider is fixedly installed on the outer side wall of the limiting ring.

[0015] The inner wall of the protective seat is provided with a limiting groove, and the limiting slider is located in the limiting groove.

[0016] As a further description of the above technical solution: the cooperation between the limiting slider and the limiting groove ensures that the screw seat only moves in a straight line, preventing it from deviating or shaking during the movement, thus ensuring the stability and reliability of the entire buffer mechanism.

[0017] Furthermore, the protective assembly includes a protective sleeve fixedly mounted on the screw rod, and a protective shell fixedly mounted inside the protective seat. A push plate is fixedly installed on the outer wall of the protective sleeve, and a pressing rod is fixedly installed on the push plate. The end of the pressing rod away from the push plate extends into the interior of the protective shell and is fixedly connected to the pressing plate. A protective bladder is provided inside the protective shell, and the pressing plate is in close contact with one side of the protective bladder.

[0018] As a further description of the above technical solution: the rotation of the screw rod drives the protective sleeve connected to it to rotate synchronously. When the protective sleeve rotates, it drives the push plate on its side to move accordingly, pushing the extrusion rod to move in a specific direction.

[0019] Furthermore, a protective spring is sleeved around the outer periphery of the extrusion rod, the protective spring is located between the push plate and the protective shell, a buffer solution is provided inside the protective bladder, and a connecting tube is fixedly installed on the protective shell, with one end of the connecting tube fixedly connected to the protective bladder.

[0020] As a further description of the above technical solution: the viscous resistance of the buffer solution will further attenuate the kinetic energy of the moving machinery. At the same time, the elastic force of the protective spring will also generate a reaction force on the movement of the squeezing rod and the squeezing plate. Through the synergistic effect of the viscous resistance of the buffer solution and the elastic force of the protective spring, a significant buffering and force-relief effect is achieved, realizing secondary buffering, effectively reducing the impact force of the door on the protective casing, thereby further improving its protective performance.

[0021] Furthermore, the damping assembly includes a damping shell fixedly mounted on the inner wall of the protective seat. The damping shell has a first inner cavity and a second inner cavity. A damping bladder and a damping plate are disposed in the first inner cavity. A damping rod is slidably mounted on the damping shell. One end of the damping rod is fixedly connected to the damping plate. The end of the damping rod away from the damping plate extends to the outside of the damping shell and is fixedly connected to a damping element. The damping element is made of rubber material. A damping spring is fixedly connected between the side of the damping plate away from the damping bladder and the inner wall of the first inner cavity.

[0022] The end of the connecting tube furthest from the protective bladder passes through the first inner cavity and is fixedly connected to the damping bladder.

[0023] As a further description of the above technical solution: the buffer solution in the protective bladder is delivered to the damping bladder in the damping shell through the connecting tube, thereby pushing the damping element to contact the screw seat. The damping element applies a damping force to the movement of the screw seat, thereby further strengthening the damping force when the screw seat moves, forming a three-stage buffer.

[0024] Furthermore, a movable plate is provided inside the second inner cavity, which is fixedly mounted on the damping rod, and the alarm component is located in the second inner cavity.

[0025] As a further description of the above technical solution: the alarm component can effectively curb electricity theft, reduce the economic losses of the power company, and further improve the security of the electricity meter.

[0026] Furthermore, the alarm component includes a first sensing element fixedly mounted on a movable plate and a second sensing element fixedly mounted on the inner wall of the second inner cavity, the first sensing element and the second sensing element being electrically connected.

[0027] As a further description of the above technical solution: when the first sensing element comes into contact with the second sensing element, the circuit will be triggered to conduct, thereby sending an electrical signal to the power company's back-end system to issue an alarm. After receiving the alarm signal, the power company's back-end system can promptly arrange for staff to go to the site for inspection and repair.

[0028] Furthermore, a door lock for locking is fixedly installed on the box door, and a viewing window for observing the reading of the electricity meter is fixedly fitted on the box door.

[0029] As a further description of the above technical solution: the setting of a viewing window makes it easier for staff to observe the readings on the electricity meter, thereby further improving its applicability.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0031] 1. This energy meter with a security structure significantly improves its protective performance through a three-stage buffering mechanism. First, the screw rod and the internal thread groove of the screw seat form an initial buffer, using the friction and rotational resistance between the threads to consume some of the impact kinetic energy, preventing damage to the equipment from excessive instantaneous impact. Second, the buffer solution in the protective chamber further attenuates the kinetic energy of the moving machinery during compression due to its viscous resistance, while the elastic force of the protective spring creates a counterforce. The two work together to achieve a second-stage buffer, effectively absorbing and dispersing the impact energy. Finally, the damping rod pushes the damping element to contact the screw seat, applying a damping force to the movement of the screw seat, forming a third-stage buffer to ensure that the kinetic energy generated by the impact of the door is fully consumed. Through multi-stage buffering protection, the impact force of the door on the protective box and the internal energy meter caused by excessive force when closing the door is greatly reduced, effectively reducing damage to the equipment caused by collisions, extending the service life of the equipment, and reducing maintenance costs and replacement frequency.

[0032] 2. When the electricity meter with the security structure is damaged to commit electricity theft, the security structure of this application can promptly trigger the alarm mechanism. As the door is opened, the protective clip separates from the protective base, and the support spring and damping spring reset, causing the relevant components to move. This causes the first sensor to contact the second sensor and send an electrical signal to the power company's backend, enabling it to issue an alarm at the first moment of electricity theft. This allows the power company to quickly learn of the theft and dispatch personnel to the site, effectively curbing electricity theft, reducing the power company's electricity bill losses, and maintaining the normal order of the electricity market and the public interest.

[0033] 3. This energy meter, equipped with a security feature, may trigger an alarm signal during normal maintenance operations, but it can be easily shut off via an external control switch without affecting the normal maintenance process. When closing the cabinet door after maintenance, simply press it slowly to avoid damage caused by improper operation. This user-friendly design ensures that staff can complete maintenance tasks efficiently while also ensuring the safety of the equipment during operation, achieving a balance between safety and efficiency. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. 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.

[0035] Figure 1 A schematic diagram of the overall three-dimensional structure provided according to an embodiment of the present invention is shown;

[0036] Figure 2 A schematic diagram of the installation structure of the protective meter box and the electricity meter provided according to an embodiment of the present invention is shown;

[0037] Figure 3 A schematic diagram of the installation structure of the protective enclosure and protective mechanism provided according to an embodiment of the present invention is shown;

[0038] Figure 4 A schematic diagram of the protective base and protective clip structure provided according to an embodiment of the present invention is shown;

[0039] Figure 5 A schematic diagram of the internal structure of the protective seat provided according to an embodiment of the present invention is shown;

[0040] Figure 6 A schematic diagram of the installation structure of the spiral assembly and the protective assembly provided according to an embodiment of the present invention is shown;

[0041] Figure 7A partial structural schematic diagram of a spiral assembly provided according to an embodiment of the present invention is shown;

[0042] Figure 8 The present invention provides an embodiment of the invention. Figure 5 Enlarged diagram of part A in the middle;

[0043] Figure 9 A schematic diagram of the mounting structure of the screw rod and protective sleeve provided according to an embodiment of the present invention is shown;

[0044] Figure 10 A partial structural schematic diagram of a protective component provided according to an embodiment of the present invention is shown;

[0045] Figure 11 A schematic diagram of the installation structure of the protective seat and damping assembly provided according to an embodiment of the present invention is shown;

[0046] Figure 12 A schematic diagram of a partial structure of a damping component provided according to an embodiment of the present invention is shown. Figure 1 ;

[0047] Figure 13 A schematic diagram of a partial structure of a damping component provided according to an embodiment of the present invention is shown. Figure 2 .

[0048] Legend:

[0049] 10. Protective enclosure; 11. Enclosure door; 12. Protective strip; 13. Door lock; 14. Viewing window;

[0050] 20. Electricity meter;

[0051] 30. Protective mechanism; 31. Protective base; 311. Limiting slide; 32. Protective fastener;

[0052] 40. Helical assembly; 41. Helical seat; 411. Helical groove; 412. Mounting groove; 42. Helical rod; 43. Fixed bearing; 44. Support spring;

[0053] 50. Limiting component; 51. Limiting ring; 52. Limiting slider;

[0054] 60. Protective component; 61. Protective sleeve; 62. Protective shell; 63. Push plate; 64. Extrusion rod; 65. Extrusion plate; 66. Protective spring; 67. Protective bladder; 68. Connecting tube;

[0055] 70. Damping assembly; 71. Damping shell; 711. First inner cavity; 712. Second inner cavity; 72. Damping bladder; 73. Damping plate; 74. Damping rod; 75. Damping component; 76. Damping spring; 77. Movable plate;

[0056] 80. Alarm component; 81. First sensor element; 82. Second sensor element. Detailed Implementation

[0057] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0058] Please see Figures 1 to 13 An electrical energy meter with a security structure includes a protective meter box 10, a door 11 installed on the protective meter box 10, and an electrical energy meter 20 installed inside the protective meter box 10. It also includes a protective mechanism 30 installed on the protective meter box 10 and a protective strip 12 installed on the door 11. The protective mechanism 30 includes a protective seat 31 fixedly mounted on the protective meter box 10 and a protective clip 32 fixedly mounted on the protective strip 12. The protective seat 31 has a spiral assembly 40 that works in conjunction with the protective clip 32. The spiral assembly 40 has a protective component 60 that buffers the closing pressure of the door 11. The inner wall of the protective seat 31 also has a damping component 70. The damping component 70 has an alarm component 80 for alarming when the door 11 is opened.

[0059] The screw rod 42 and the internal threaded groove of the screw seat form an initial buffer, using the friction and rotational resistance between the threads to consume part of the impact kinetic energy and prevent excessive instantaneous impact from damaging the equipment. Secondly, the buffer solution in the protective bladder 67, during the compression process, can further attenuate the kinetic energy of the moving machinery due to its viscous resistance. At the same time, the elastic force of the protective spring 66 forms a counterforce. The two work together to achieve a secondary buffer, effectively absorbing and dispersing the impact energy. Finally, the damping rod 74 pushes the damping element 75 to contact the screw seat 41, applying a damping force to the movement of the screw seat 41, forming a tertiary buffer to ensure that the kinetic energy generated by the impact of the door 11 is fully consumed. Through multi-stage buffer protection, the impact force of the door 11 on the protective meter box 10 and the internal power meter 20 caused by excessive force when closing the door 11 is greatly reduced, effectively reducing the damage to the equipment caused by collision, extending the service life of the equipment, and reducing the maintenance cost and replacement frequency of the equipment.

[0060] Please see Figures 1 to 3 A door lock 13 is fixedly installed on the door 11 for locking, and a viewing window 14 for observing the reading of the electricity meter 20 is fixedly installed on the door 11; the setting of the viewing window 14 makes it easier for staff to observe the reading on the electricity meter 20, further improving its applicability.

[0061] Please see Figures 5 to 7 The spiral assembly 40 includes a spiral seat 41 slidably mounted inside the protective seat 31, and a spiral rod 42 mounted on the spiral seat 41. The spiral seat 41 has a spiral groove 411 inside, and the spiral rod 42 has a protrusion that cooperates with the spiral groove 411. The surface of the protrusion is chamfered. The end of the spiral rod 42 away from the spiral seat 41 is rotatably connected to the protective seat 31 through a fixed bearing 43. A support spring 44 is fixedly connected between one side of the spiral seat 41 and the inner wall of the protective seat 31. During the linear movement of the spiral seat 41, the internal thread groove of the spiral seat 41 engages with the protrusion on the spiral rod 42. As the spiral seat 41 is continuously pushed by the protective clamp 32, its linear motion is converted into the rotation of the spiral rod 42. When the spiral rod 42 rotates, its thread engagement with the internal thread groove of the thread seat forms a preliminary buffer. Through the friction between the threads and the rotational resistance of the spiral rod 42, some of the kinetic energy generated by the impact of the door 11 is consumed, achieving a first-level buffering effect.

[0062] Please see Figures 4 to 7 The screw seat 41 has a mounting groove 412 on the side away from the screw rod 42, which is used to cooperate with the protective clip 32; the mounting groove 412 is designed to facilitate the precise insertion of the protective clip 32.

[0063] Please see Figures 5 to 8 A limiting component 50 is fixedly mounted on the outer periphery of the screw seat 41. The limiting component 50 includes a limiting ring 51 fixedly mounted on the outer periphery of the screw seat 41, and a limiting slider 52 fixedly mounted on the outer side wall of the limiting ring 51. A limiting groove 311 is opened on the inner wall of the protective seat 31, and the limiting slider 52 is located in the limiting groove 311. Through the cooperation between the limiting slider 52 and the limiting groove 311, it is ensured that the screw seat 41 only moves in a straight line, preventing it from deviating or shaking during the movement, thus ensuring the stability and reliability of the entire buffer mechanism.

[0064] Please see Figures 5 to 10 The protective assembly 60 includes a protective sleeve 61 fixedly mounted on the spiral rod 42, and a protective shell 62 fixedly mounted inside the protective seat 31. A push plate 63 is fixedly installed on the outer wall of the protective sleeve 61, and a pressing rod 64 is fixedly installed on the push plate 63. The end of the pressing rod 64 away from the push plate 63 extends into the interior of the protective shell 62 and is fixedly connected to the pressing plate 65. A protective bladder 67 is provided inside the protective shell 62, and the pressing plate 65 is in close contact with one side of the protective bladder 67. The rotation of the spiral rod 42 drives the protective sleeve 61 connected to it to rotate synchronously. When the protective sleeve 61 rotates, it drives the push plate 63 on its side to move accordingly, pushing the pressing rod 64 to move in a specific direction.

[0065] Please see Figures 5 to 11A protective spring 66 is fitted around the outer periphery of the squeezing rod 64. The protective spring 66 is located between the push plate 63 and the protective shell 62. The protective bladder 67 is filled with a buffer solution. A connecting tube 68 is fixedly installed on the protective shell 62, and one end of the connecting tube 68 is fixedly connected to the protective bladder 67. The squeezing rod 64 drives the squeezing plate 65 to squeeze the protective bladder 67. Because the protective bladder 67 is filled with a buffer solution with a specific viscosity coefficient, when the squeezing plate 65 applies pressure to the protective bladder 67, the buffer solution flows in the protective bladder 67. Its viscous resistance will further attenuate the kinetic energy of the moving machinery. At the same time, the elastic force of the protective spring 66 will also form a reaction force on the movement of the squeezing rod 64 and the squeezing plate 65. Through the synergistic effect of the viscous resistance of the buffer solution and the elastic force of the protective spring 66, a significant buffering and force-relief effect is achieved, realizing secondary buffering, effectively reducing the impact force of the door 11 on the protective watch box 10, thereby further improving its protective performance.

[0066] Please see Figure 5 , Figures 11 to 13 The damping assembly 70 includes a damping shell 71 fixedly mounted on the inner wall of the protective seat 31. The damping shell 71 has a first inner cavity 711 and a second inner cavity 712. A damping bladder 72 and a damping plate 73 are disposed in the first inner cavity 711. A damping rod 74 is slidably mounted on the damping shell 71. One end of the damping rod 74 is fixedly connected to the damping plate 73, and the end of the damping rod 74 away from the damping plate 73 extends to the outside of the damping shell 71 and is fixedly connected to a damping element 75. The damping element 75 is made of rubber. A damping spring 76 is fixedly connected between the side of the damping plate 73 away from the damping bladder 72 and the inner wall of the first inner cavity 711. The connecting tube 68, away from the protective bladder 67, passes through the first inner cavity 711 and is fixedly connected to the damping bladder 72. The buffer solution inside the protective bladder 67 is delivered to the damping bladder 72 in the damping shell 71 via the connecting tube 68. As the buffer solution is continuously injected, the damping bladder 72 begins to expand. The expansion of the damping bladder 72 pushes the damping plate 73 to move. When the damping plate 73 moves, it drives the damping rod 74 to move as well, and pushes the damping element 75 to contact the screw seat 41. After the damping element 75 contacts the screw seat 41, it applies a damping force to the movement of the screw seat 41, thereby further strengthening the damping force when the screw seat 41 moves, forming a three-stage buffer to ensure that the kinetic energy generated by the impact of the door 11 is fully consumed, and to minimize the impact on the protective meter box 10 and the internal power meter 20.

[0067] Please see Figures 11 to 13 The second inner cavity 712 is equipped with a movable plate 77, which is fixedly mounted on the damping rod 74, and the alarm component 80 is located in the second inner cavity 712. The alarm component 80 can effectively curb electricity theft and reduce the economic losses of the power company. This setting further enhances the security effect of the electricity meter 20.

[0068] Please see Figure 5 , Figures 11 to 13 The alarm component 80 includes a first sensing element 81 fixedly mounted on a movable plate 77 and a second sensing element 82 fixedly mounted on the inner wall of the second inner cavity 712. The first sensing element 81 and the second sensing element 82 are electrically connected. With the first sensing element 81 mounted on the movable plate 77, as the movable plate 77 moves, the first sensing element 81 and the second sensing element 82, which are pre-fixed on the wall of the second inner cavity 712 of the damping shell 71, come into contact with each other. When the first sensing element 81 and the second sensing element 82 come into contact, the circuit will be triggered to conduct, thereby sending an electrical signal to the power company's back-end for alarm. After receiving the alarm signal, the power company's back-end can promptly arrange for staff to go to the site for maintenance.

[0069] The specific usage and function of this embodiment are as follows:

[0070] Working principle: When the staff closes the box door 11 after the maintenance work of the electricity meter 20, the force may be too great due to negligence or improper operation when closing the box door 11, which will cause the box door 11 to hit the protective box 10 quickly. At the moment of impact, the protective strip 12 on the box door 11 drives the protective clip 32 to move towards the protective seat 31, and the protective clip 32 comes into contact with the screw seat 41 in the protective seat 31. One end of the protective clip 32 is located in the mounting groove 412 on the screw seat 41. Under the pressure of the protective clip 32, the screw seat 41 begins to move and simultaneously squeezes the support spring 44. At the same time, it drives the limiting slider 52 on the screw seat 41 to slide in the limiting groove 311 preset on the inner wall of the protective seat 31. This limiting structure ensures that the screw seat 41 only moves in a straight line, which can effectively prevent it from deviating or shaking.

[0071] During the linear movement of the screw seat 41, the internal thread groove engages with the protrusion on the screw rod 42. As the screw seat 41 is continuously pushed by the protective clip 32, its linear motion is converted into the rotation of the screw rod 42. When the screw rod 42 rotates, its thread engagement with the internal thread groove of the screw seat forms a preliminary buffer. Through the friction between the threads and the rotational resistance of the screw rod 42, some of the kinetic energy generated by the impact of the door 11 is consumed, thus achieving a first-level buffering effect.

[0072] Meanwhile, the rotation of the spiral rod 42 drives the protective sleeve 61 connected to it to rotate synchronously. When the protective sleeve 61 rotates, it drives the push plate 63 on its side to move accordingly, pushing the squeezing rod 64 to move in a specific direction. During the movement of the squeezing rod 64, the push plate 63 squeezes the protective spring 66, causing it to undergo elastic deformation. In addition, the squeezing rod 64 drives the squeezing plate 65 to squeeze the protective bladder 67. By filling the protective bladder 67 with a buffer solution with a specific viscosity coefficient, when the squeezing plate 65 applies pressure to the protective bladder 67, the buffer solution flows in the protective bladder 67. Its viscous resistance will further reduce the kinetic energy of the moving machinery. At the same time, the elastic force of the protective spring 66 will also form a reaction force on the movement of the squeezing rod 64 and the squeezing plate 65. Through the synergistic effect of the viscous resistance of the buffer solution and the elastic force of the protective spring 66, a significant buffering and stress relief effect is achieved, realizing secondary buffering, effectively reducing the impact force of the door 11 on the protective casing 10, thereby further improving its protective performance.

[0073] During the compression of the protective bladder 67 by the compression plate 65, the buffer solution inside the protective bladder 67 is transported to the damping bladder 72 in the damping shell 71 through the connecting tube 68. As the buffer solution is continuously injected, the damping bladder 72 begins to expand. The expansion of the damping bladder 72 pushes the damping plate 73 to move. When the damping plate 73 moves, it drives the damping rod 74 to move accordingly and pushes the damping element 75 to contact the screw seat 41. After the damping element 75 contacts the screw seat 41, it applies a damping force to the movement of the screw seat 41, thereby further strengthening the damping force when the screw seat 41 moves, forming a three-stage buffer to ensure that the kinetic energy generated by the impact of the door 11 is fully consumed, and to minimize the impact on the protective meter box 10 and the internal power meter 20.

[0074] Regarding security alarms, when the electricity meter 20 is intentionally damaged for electricity theft, it is usually necessary to first break the box door 11 to open it. As the box door 11 on the protective meter box 10 is opened, the protective clips 32 and the protective seat 31, which were originally in contact, separate, and the protective clips 32 and the screw seat 41 in the protective seat 31 also disengage. At this time, the support spring 44 pushes the screw seat 41 to reset under its own elastic force, thereby driving the screw rod 42 to rotate in the opposite direction. At the same time, the damping spring 76 in the damping assembly 70 also pushes the damping plate 73 to reset under its elastic force. During the movement of the damping plate 73, it drives the damping rod 74 to rotate. The movable plate 77 moves synchronously. A first sensing plate 81 is provided on the movable plate 77. As the movable plate 77 moves, the first sensing plate 81 and the second sensing plate 82 fixed on the wall of the second inner cavity 712 of the damping shell 71 come into contact with each other. When the first sensing plate 81 and the second sensing plate 82 come into contact, the circuit will be triggered to conduct, thereby sending an electrical signal to the power company's back-end for alarm. After receiving the alarm signal, the power company's back-end can promptly arrange for staff to go to the site for inspection and repair, effectively curbing electricity theft and reducing the power company's economic losses. This setting further enhances the security effect of the electricity meter 20.

[0075] In addition, when staff need to open the box door 11 for maintenance, they can open the box door 11 through the door lock 13. After the box door 11 is separated from the protective meter box 10, the first sensor 81 and the second sensor 82 in the alarm component 80 will come into contact due to the movement of the movable plate 77 and trigger an alarm. At this time, staff only need to turn off the alarm signal through the external control switch. When staff close the box door 11 after maintenance, they only need to press the box door 11 slowly to make the box door 11 make smooth contact with the protective meter box 10, so as to avoid the box door 11 from violently colliding with the protective meter box 10 or other equipment due to excessive closing force, thereby improving the service life of the electricity meter 20 and its auxiliary equipment.

[0076] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An electricity meter with a security structure, comprising a protective meter box (10), a door (11) disposed on the protective meter box (10), and an electricity meter (20) disposed inside the protective meter box (10), characterized in that: It also includes a protective mechanism (30) installed on the protective box (10) and a protective strip (12) installed on the box door (11). The protective mechanism (30) includes a protective seat (31) fixedly mounted on the protective housing (10) and a protective clip (32) fixedly mounted on the protective strip (12). The protective base (31) is provided with a spiral assembly (40) that works in conjunction with the protective clip (32). The spiral assembly (40) is provided with a protective assembly (60) that buffers the closing pressure of the door (11). The inner wall of the protective base (31) is also provided with a damping assembly (70). The damping assembly (70) is provided with an alarm assembly (80) for alarming when the door (11) is opened. The spiral assembly (40) includes a spiral seat (41) slidably mounted inside the protective seat (31) and a spiral rod (42) mounted on the spiral seat (41). The spiral seat (41) has a spiral groove (411) inside. The spiral rod (42) has a protrusion that cooperates with the spiral groove (411). The end of the spiral rod (42) away from the spiral seat (41) is rotatably connected to the protective seat (31) through a fixed bearing (43). A support spring (44) is fixedly connected between one side of the spiral seat (41) and the inner wall of the protective seat (31). The protective assembly (60) includes a protective sleeve (61) fixedly mounted on a screw rod (42) and a protective shell (62) fixedly mounted inside a protective seat (31). A push plate (63) is fixedly mounted on the outer wall of the protective sleeve (61), and a pressing rod (64) is fixedly mounted on the push plate (63). One end of the pressing rod (64) away from the push plate (63) extends into the interior of the protective shell (62) and is fixedly connected to the pressing plate (65). A protective bladder (67) is provided inside the protective shell (62), and the pressing plate (65) is in contact with one side of the protective bladder (67). A protective spring (66) is sleeved on the outer periphery of the extrusion rod (64). The protective spring (66) is located between the push plate (63) and the protective shell (62). A buffer solution is provided inside the protective bladder (67). A connecting tube (68) is fixedly installed on the protective shell (62). One end of the connecting tube (68) is fixedly connected to the protective bladder (67).

2. The power meter with a security structure according to claim 1, characterized in that: The screw seat (41) has a mounting groove (412) on the side away from the screw rod (42) that is used in conjunction with the protective clip (32).

3. The power meter with a security structure according to claim 1, characterized in that: A limiting component (50) is fixedly assembled on the outer periphery of the screw seat (41). The limiting component (50) includes a limiting ring (51) fixedly assembled on the outer periphery of the screw seat (41), and a limiting slider (52) is fixedly installed on the outer side wall of the limiting ring (51). The inner wall of the protective seat (31) is provided with a limiting groove (311), and the limiting slider (52) is located in the limiting groove (311).

4. The power meter with a security structure according to claim 1, characterized in that: The damping assembly (70) includes a damping shell (71) fixedly mounted on the inner wall of the protective seat (31). The damping shell (71) has a first inner cavity (711) and a second inner cavity (712) inside. The first inner cavity (711) is provided with a damping bladder (72) and a damping plate (73). A damping rod (74) is slidably mounted on the damping shell (71). One end of the damping rod (74) is fixedly connected to the damping plate (73). The end of the damping rod (74) away from the damping plate (73) extends to the outside of the damping shell (71) and is fixedly connected to a damping element (75). The damping element (75) is made of rubber material. A damping spring (76) is fixedly connected between the side of the damping plate (73) away from the damping bladder (72) and the inner wall of the first inner cavity (711). The end of the connecting tube (68) away from the protective bladder (67) passes through the first inner cavity (711) and is fixedly connected to the damping bladder (72).

5. An electricity meter with a security structure according to claim 4, characterized in that: The second inner cavity (712) is provided with a movable plate (77), which is fixedly mounted on the damping rod (74), and the alarm component (80) is located in the second inner cavity (712).

6. An energy meter with a security structure according to claim 5, characterized in that: The alarm assembly (80) includes a first sensor (81) fixedly mounted on a movable plate (77) and a second sensor (82) fixedly mounted on the inner wall of the second inner cavity (712), wherein the first sensor (81) and the second sensor (82) are electrically connected.

7. An electricity meter with a security structure according to claim 1, characterized in that: A door lock (13) for locking is fixedly installed on the door (11), and a viewing window (14) for observing the reading of the electricity meter (20) is fixedly installed on the door (11).

Images