An anti-theft electricity meter
By combining a double-layer lock cylinder structure with an alarm device, dual anti-theft protection for the electricity meter is achieved, solving the problem of the single anti-theft method of traditional electricity meters, and improving meter reading efficiency and the stability of the power system.
Patent Information
- Application Number
- CN202610370490.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-25
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional electricity meters have limited anti-theft methods, are easily pried open, and are cumbersome to operate, affecting the stability and efficiency of the power system.
It adopts a double-layer lock cylinder structure, with the first-level lock cylinder controlling the anti-theft door of the electrical cabinet and the second-level lock cylinder controlling the electricity meter mounting shell. Combined with alarm devices and anti-theft components, it achieves double protection and simplifies the operation process without affecting the normal operation of the electricity meter.
Effectively prevents electricity theft, improves meter reading efficiency, simplifies daily operations, reduces the likelihood of successful electricity theft, and enhances the ease of operation for staff and the stability of the power system.
Smart Images
Figure CN122084953A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of anti-theft technology, and in particular to an anti-theft electricity meter. Background Technology
[0002] In the field of power supply and management, electricity meters are key devices for measuring electricity consumption, and their security and stability are directly related to the economic benefits of power companies and the electricity rights of users. Traditional anti-theft measures for electricity meters are relatively weak, usually only involving the installation of simple locks on the outside of the electrical cabinet, with the cabinet door opened by a key to provide a certain degree of protection for the electricity meter.
[0003] However, this traditional anti-theft method has many drawbacks. Due to the simple structure of the locks, thieves can easily pry open the lock cylinder and the electricity meter casing, then open the electrical cabinet to short-circuit the meter and steal electricity. This theft not only causes huge economic losses to power companies but also disrupts normal electricity consumption and affects the stable operation of the power system. Furthermore, most existing anti-theft facilities only provide basic physical protection, lacking effective deterrence and early warning mechanisms, and thus cannot fundamentally eliminate electricity theft.
[0004] In addition, when it is necessary to perform routine meter reading, maintenance or replacement of parts on the electricity meter, the operation process of traditional anti-theft devices is relatively cumbersome. It often requires disassembling multiple parts to access the electricity meter. This not only increases the difficulty and workload of the staff, but may also cause the electricity meter to malfunction during the operation, affecting its normal operation.
[0005] Therefore, an anti-theft electricity meter is proposed to solve the problem of the limited anti-theft methods of existing electricity meters. Summary of the Invention
[0006] The purpose of this invention is to solve the problem of the limited anti-theft methods of existing electricity meters, and to propose an anti-theft electricity meter.
[0007] To achieve the above objectives, the present invention adopts the following technical solution: An anti-theft electricity meter includes an installation cabinet, with an anti-theft door hinged to the front side of the installation cabinet, and parallel installation plates and limiting plates arranged inside the installation cabinet. The outer wall of the mounting plate is fixedly connected to the inner wall of the mounting cabinet. A plurality of arrayed mounting holes are opened through the end face of the mounting plate. An anti-theft component is slidably connected in each mounting hole. The anti-theft component extends to one side of the limiting plate. A mounting shell is provided on one side near the security door and corresponding to one of the security components. The mounting shell is fixedly connected to the mounting plate. An electricity meter is placed inside the mounting shell. A cable tray is provided at the bottom of the mounting shell. A protective cover is hinged to one side of the front of the mounting shell. A threaded hole is provided on the end face of the protective cover. A bolt passes through the threaded hole and is threadedly connected to the mounting shell. A snap-fit interface is provided on the inner wall of the protective cover away from the hinge side. The snap-fit interface is engaged with the security component. The limiting plate is located on the side of the mounting plate away from the security door. The end face of the limiting plate near the mounting plate has several limiting protrusions corresponding to the number of mounting holes and located on the sliding path of the mounting holes. The side wall of the limiting plate is fixed to the side wall of the mounting cabinet by a spring. A fixing block is fixed on the end face of the limiting plate away from the mounting plate. The security door is provided with an insertion hole, and the installation cabinet is provided with a security lock that is compatible with the insertion hole. One end of the security lock is in contact with the insertion hole, and the other end extends to the back of the limiting plate and is fixed with a handle. The handle is in contact with the fixing block. The anti-theft lock includes a lock cylinder and a lock shell. The lock shell is located outside the lock cylinder and is rotatably connected to it, and is fixed to the inner wall of the mounting cabinet. The anti-theft component cooperates with the mounting shell and the limiting plate to lock and unlock the protective cover.
[0008] Preferably, the lock housing includes an upper lock housing near the security door and a lower lock housing near the limiting plate, which are designed as a single unit; the lock cylinder includes an upper lock cylinder rotatably connected in the upper lock housing and a lower lock cylinder rotatably connected in the lower lock housing, and the upper and lower lock housings are rotatably connected.
[0009] Preferably, the inner wall of the upper lock housing is provided with a plurality of mounting grooves, and the outer wall of the upper lock cylinder is provided with a limiting groove corresponding to the position of the mounting groove. The bottom of the mounting groove is fixedly connected to a limiting lock tooth by a spring, and the limiting lock tooth enters the upper lock cylinder through the limiting groove.
[0010] Preferably, the inner wall of the security door is fixed with a buckle, the inner wall of the upper lock shell is provided with a rotating groove through the outer wall, the outer wall of the upper lock cylinder is fixed with a lock tongue, the lock tongue is located in the rotating groove and rotates freely, and cooperates with the buckle to achieve locking.
[0011] Preferably, the inner wall of the lower lock housing is provided with a second mounting groove, which is located at the connection between the lower lock housing and the upper lock housing. The bottom of the second mounting groove is fixedly connected to a second limiting lock tooth by a spring. The second limiting lock tooth is designed as a wedge-shaped structure with the wedge-shaped surface facing the key insertion direction. When no key is inserted, the other end of the second limiting lock tooth abuts against the lower lock cylinder.
[0012] Preferably, the anti-theft component consists of a snap-fit block and a sliding plate; the snap-fit block is rotatably connected to the side wall of the mounting shell via a rotating shaft, one end of which engages with the snap-fit interface on the inner wall of the protective cover, and the other end extends to one side of the mounting hole and is located on the sliding path of the sliding plate; the sliding plate is slidably connected in the mounting hole, one end of which contacts the limiting protrusion on the limiting plate, and the other end faces the snap-fit block.
[0013] Preferably, an auxiliary spring is fixed to the side of the sliding plate facing the mounting hole, and the other end of the auxiliary spring is fixed to the mounting plate; the snap-fit block has an arc-shaped force-bearing chamfer on the side near the sliding plate, and the arc-shaped force-bearing chamfer is located at the point where the sliding plate is subjected to pressure.
[0014] Preferably, a plurality of return springs are fixed to the bottom of the mounting shell, and the plurality of return springs together fix a return plate. In the initial state, the return plate presses against the locking block to restrict its rotation, so that the locking block engages with the locking interface.
[0015] Preferably, when the limiting plate is pushed to move, the limiting protrusion slides to the corresponding mounting hole and pushes the anti-theft component into the mounting housing; after the external force is removed, the limiting plate is reset under the action of the spring force, the limiting protrusion leaves the mounting hole, and the anti-theft component returns to the working position.
[0016] Preferably, in daily use, the security door is locked to the installation cabinet by the security lock, the limit plate is in the initial position, and the snap-fit block of the security component is engaged with the snap-fit interface of the protective cover; When reading the meter, staff can simply open the security lock and security door and observe the reading of the electricity meter inside the casing to complete the meter reading.
[0017] The beneficial effects of this invention are: This device innovatively features a double-layer lock cylinder structure. The primary lock cylinder controls the opening and closing of the electrical cabinet's security door, while the secondary lock cylinder controls the opening and closing of the electricity meter's mounting housing. The two lock cylinders are separated by steeply angled locking teeth. This design ensures that even if an electricity thief manages to pry open the primary lock cylinder, they will be unable to open the electricity meter's mounting housing because the secondary lock cylinder remains intact. Once the mounting housing is subjected to force, an alarm device is immediately triggered, effectively deterring electricity thieves. This dual protection of the electricity meter's security—both physical and early warning—significantly reduces the likelihood of successful electricity theft.
[0018] In routine meter reading operations, staff do not need to disassemble any parts. They simply use a key to open the security door and can directly observe the meter reading inside the casing to complete the meter reading. The entire process is simple and quick, without interrupting the normal operation of the meter, greatly improving meter reading efficiency. Furthermore, when meter maintenance or component replacement is required, a specific procedure allows for convenient temporary disarming of the anti-theft function, which can be quickly restored after the operation is completed. This reduces unnecessary steps and time, further improving work efficiency. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the longitudinal section structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the back structure of the mounting plate according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the anti-theft lock according to an embodiment of the present invention; Figure 5 This is an embodiment of the present invention. Figure 2 A magnified view of region A; Figure 6 This is an embodiment of the present invention. Figure 4 Enlarged schematic diagram of region B; Figure 7 This is a schematic diagram of the back structure inside the installation cabinet according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the internal structure of the mounting shell according to an embodiment of the present invention.
[0020] In the diagram: 1. Mounting cabinet; 101. Mounting plate; 1011. Mounting hole; 1012. Mounting shell; 1013. Protective cover; 1014. Snap-fit interface; 1015. Threaded hole; 102. Limiting plate; 1021. Limiting protrusion; 1022. Spring one; 1023. Fixing block; 103. Anti-theft lock; 1031. Handle; 1032. Lock cylinder; 1033. Lock shell; 10331. Upper lock shell; 10332. Lower lock shell; 10333. Mounting slot one; 10334. Mounting slot two; 10335. 1. Limiting lock tooth 2; 10336, Rotating groove; 10321, Upper lock cylinder; 10322, Lower lock cylinder; 10323, Limiting groove; 10324, Limiting lock tooth 1; 1034, Lock tongue; 2. Security door; 201, Insertion hole; 202, Buckle; 3. Security components; 301, Snap-fit block; 302, Sliding plate; 303, Auxiliary spring; 304, Arc-shaped force chamfer; 305, Return spring; 306, Return plate; 4. Alarm device; 401, Pressure sensor; 402, Buzzer; 403, Battery. Detailed Implementation
[0021] 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.
[0022] Traditional anti-theft devices for electricity meters typically only involve installing a lock on the outside of the electrical cabinet, which is opened with a key. However, due to their simple structure, thieves can easily pry open the lock cylinder to open the cabinet, short-circuiting the meter and stealing electricity. This device, however, uses a double-layered lock cylinder. The primary lock cylinder controls the opening and closing of the cabinet's security door, while the secondary lock cylinder controls the opening and closing of the meter's mounting housing. The two lock cylinders are separated by steeply angled locking teeth. While thieves can easily pry open the primary lock cylinder, thus lowering their guard, when they attempt to open the meter's mounting housing, the secondary lock cylinder remains intact, preventing the opening. The pressure on the mounting housing triggers an alarm, deterring thieves. The locking teeth preferably use a wedge angle of 30-60 degrees.
[0023] Reference Figures 1-8 An anti-theft electricity meter includes an installation cabinet 1, wherein an anti-theft door 2 is hinged to the front side of the installation cabinet 1 for protecting the installation cabinet 1.
[0024] The mounting cabinet 1 is internally provided with parallel mounting plates 101 and limiting plates 102, wherein: The outer wall of the mounting plate 101 is fixedly connected to the inner wall of the mounting cabinet 1, providing a stable support structure for the entire device. A plurality of mounting holes 1011 are formed through the end face of the mounting plate 101, and these mounting holes 1011 are evenly spaced in an array. An anti-theft component 3 is slidably connected within each mounting hole 1011, and the anti-theft component 3 extends to one side of the limiting plate 102, allowing the anti-theft component 3 to move flexibly within a certain range.
[0025] On the side near the security door 2, corresponding to one of the security components 3, a mounting shell 1012 is provided. The mounting shell 1012 is fixedly connected to the mounting plate 101, forming a closed space. An electricity meter is placed inside the mounting shell 1012, and the electricity meter is used to record data such as electricity consumption.
[0026] The bottom of the mounting housing 1012 is provided with a cable tray, which is used to connect external power lines to the electricity meter.
[0027] A protective cover 1013 is hinged to one side of the front of the mounting housing 1012. The end face of the protective cover 1013 has a threaded hole 1015. A bolt passes through the threaded hole 1015 and is threadedly connected to the mounting housing 1012, thus initially achieving closed protection for the electricity meter. Preferably, the bolt is used to provide further auxiliary fixation after the protective cover 1013 is closed to prevent the protective cover 1013 from accidentally loosening, but its main locking function is achieved by the anti-theft component.
[0028] Meanwhile, the inner wall of the protective cover 1013 away from the hinge side is provided with a card interface 1014. The card interface 1014 is engaged with the anti-theft component 3 to form a secondary anti-theft limit. The double protection ensures that the electricity meter is not tampered with, moved or tampered with by unauthorized personnel, thus preventing electricity theft from the source.
[0029] In addition, staff do not need to disassemble any parts when reading meters. They only need to open the security door 2 and observe the reading of the electricity meter inside the mounting shell 1012 to complete the meter reading. The operation is convenient and efficient and does not require interruption of the normal operation of the electricity meter.
[0030] The limiting plate 102 is located on the side of the mounting plate 101 away from the security door 2, and serves to limit the movement range of the anti-theft component 3. A plurality of limiting protrusions 1021 are fixed on the end face of the limiting plate 102 near the mounting plate 101. The number of limiting protrusions 1021 corresponds to the number of mounting holes 1011, and they are located on the sliding path of the mounting holes 1011. When the limiting plate 102 moves, the limiting protrusions 1021 can accurately interact with the mounting holes 1011 and the anti-theft component 3.
[0031] The side wall of the limiting plate 102 is fixed to the side wall of the mounting cabinet 1 by a spring 1022. The setting of the spring 1022 realizes the reset function of the limiting plate 102. When the external force disappears, the limiting plate 102 can return to the initial position under the action of the spring 1022.
[0032] When a specific operation needs to be performed on the device, such as maintenance or replacement of parts, and the anti-theft function needs to be temporarily disabled, the limit plate 102 is pushed to move it. At this time, the limit protrusion 1021 slides to the corresponding mounting hole 1011 and pushes the anti-theft component 3 into the mounting shell 1012, so that the anti-theft component 3 is disabled and can no longer protect the mounting shell 1012, thereby facilitating the relevant operation.
[0033] When the operation is completed and the anti-theft component 3 needs to restore its anti-theft function, the external force that pushes the limit plate 102 is removed. The limit plate 102 is reset by the elastic force of the spring 1022, the limit protrusion 1021 leaves the mounting hole 1011, the anti-theft component 3 returns to its original working position, and becomes active again, continuing to protect the electricity meter inside the mounting shell 1012.
[0034] A fixing block 1023 is fixed on the end face of the limiting plate 102 away from the mounting plate 101, and the fixing block 1023 is arranged close to the anti-theft lock 103.
[0035] The security door 2 is provided with an insertion hole 201 for locking with the installation cabinet 1. The installation cabinet 1 is provided with a security lock 103 that is compatible with the insertion hole 201. The security door 2 and the installation cabinet 1 are securely locked together by the security lock 103 and the insertion hole 201 to prevent unauthorized personnel from opening it.
[0036] One end of the anti-theft lock 103 is in contact with the insertion hole 201, and the other end extends to the rear side of the limiting plate 102 and is fixed with a handle 1031. The handle 1031 is in contact with the fixing block 1023. By rotating the handle 1031, the fixing block 1023 drives the limiting plate 102 to move.
[0037] The anti-theft lock 103 includes a lock cylinder 1032 and a lock shell 1033. The lock shell 1033 is located outside the lock cylinder 1032 and is rotatably connected. The lock shell 1033 is fixed to the inner wall of the installation cabinet 1.
[0038] In some preferred embodiments, the lock housing 1033 includes an upper lock housing 10331 near the side of the security door 2 and a lower lock housing 10332 near the side of the limiting plate 102; the two are designed as a single piece to avoid the risk of loosening caused by the separate structure and to improve the overall strength and anti-theft performance of the lock body.
[0039] In some preferred embodiments, the lock cylinder 1032 includes an upper lock cylinder 10321 rotatably connected within the upper lock housing 10331 and a lower lock cylinder 10322 rotatably connected within the lower lock housing 10332, wherein the upper lock housing 10331 and the lower lock housing 10332 are rotatably connected. In some preferred embodiments, the inner wall of the upper lock housing 10331 is provided with a plurality of mounting grooves 10333, and the outer wall of the upper lock cylinder 10321 is provided with a limiting groove 10323 corresponding to the positions of the plurality of mounting grooves 10333. The bottom of the mounting grooves 10333 is fixedly connected to a limiting lock tooth 10324 by a spring, and the limiting lock tooth 10324 enters the upper lock cylinder 10321 through the limiting groove 10323.
[0040] The limiting groove 10323 prevents the limiting lock tooth 10324 from protruding excessively and blocking the upper lock cylinder 10321, thus avoiding the situation where the key cannot be inserted and ensuring the smoothness of normal unlocking operation.
[0041] In some preferred embodiments, the inner wall of the security door 2 is fixed with a buckle 202, the inner wall of the upper lock shell 10331 is provided with a rotating groove 10336 through the outer wall, the outer wall of the upper lock cylinder 10321 is fixed with a lock tongue 1034, the lock tongue 1034 is located in the rotating groove 10336 and rotates freely, and the lock tongue 1034 cooperates with the buckle 202 fixed to the inner wall of the security door 2 to achieve locking.
[0042] When the upper lock cylinder 10321 is turned, the lock tongue 1034 will also turn, engaging or disengaging with the latch 202, thereby enabling the security door 2 to open and close, completing the first line of physical protection.
[0043] In some preferred embodiments, the inner wall of the lower lock housing 10332 is provided with a second mounting groove 10334, which is located at the connection between the lower lock housing 10332 and the upper lock housing 10331. The bottom of the second mounting groove 10334 is fixedly connected to a second limiting lock tooth 10335 by a spring. The second limiting lock tooth 10335 is designed as a wedge-shaped structure with the wedge-shaped surface facing the key insertion direction, so that the key can be smoothly slid into the lower lock cylinder 10322 along the wedge-shaped surface.
[0044] In the relaxed state without key insertion, the other end of the second limiting lock tooth 10335 will tightly abut against the lower lock cylinder 10322, restricting the free rotation of the lower lock cylinder 10322. This prevents unauthorized personnel from tampering with the position of the limiting plate 102 by prying or rotating the lower lock cylinder 10322, further enhancing the anti-hacking capability of the anti-theft lock 103, and ensuring that the lower lock cylinder 10322 can only be controlled by matching the key, thereby adjusting the limiting plate 102 to switch the anti-theft function.
[0045] Preferably, the second limiting lock tooth 10335 abuts against the lower lock cylinder 10322 under the action of the spring, restricting its free rotation; when the matching key is inserted into the lower lock cylinder 10322, the front end of the key will press the wedge-shaped surface of the second limiting lock tooth 10335, causing it to overcome the spring force and retract into the second mounting groove 10334, thereby releasing the lock on the lower lock cylinder 10322 and allowing it to rotate.
[0046] The anti-theft component 3 is installed in the mounting hole 1011 of the mounting plate 101, and cooperates with the mounting shell 1012 and the limiting plate 102 to lock and unlock the protective cover 1013.
[0047] In some preferred embodiments, the anti-theft component 3 is composed of a snap-fit block 301 and a sliding plate 302. The snap-fit block 301 is rotatably connected to the side wall of the mounting housing 1012 via a pivot, one end of which engages with the snap-fit interface 1014 on the inner wall of the protective cover 1013, and the other end extends to one side of the mounting hole 1011 and is located on the sliding path of the sliding plate 302. The sliding plate 302 is slidably connected in the mounting hole 1011. One end of it contacts the limiting protrusion 1021 on the limiting plate 102, and the other end faces the locking block 301. Under the push of the limiting protrusion 1021, it slides along the mounting hole 1011 and squeezes the locking block 301.
[0048] In some preferred embodiments, an auxiliary spring 303 is fixed to the side of the sliding plate 302 facing the mounting hole 1011, and the other end of the auxiliary spring 303 is fixed to the mounting plate 101.
[0049] In some preferred embodiments, the snap-fit block 301 has an arc-shaped force-bearing chamfer 304 on the side near the sliding plate 302, and the arc-shaped force-bearing chamfer 304 is located at the point where the sliding plate 302 applies pressure.
[0050] In some preferred embodiments, a plurality of return springs 305 are fixed to the bottom of the mounting housing 1012, and the plurality of return springs 305 are together fixed to a return plate 306. The return plate 306 presses the snap-fit block 301 in the initial state to restrict the rotation of the snap-fit block 301, so that the snap-fit block 301 engages with the snap-fit interface 1014. When the snap-fit block 301 is subjected to external force and rotates to disengage from the snap-fit interface 1014, the return springs 305 are compressed. When the external force on the snap-fit block 301 disappears, the return springs 305 extend through the return plate 306 to make the snap-fit block 301 rotate and re-engage with the snap-fit interface 1014.
[0051] In some preferred embodiments, an alarm device 4 is also included, which includes a pressure sensor 401, a buzzer 402, and a battery 403. The pressure sensor 401 is fixed at the joint between the protective cover 1013 and the snap-fit block 301. The buzzer 402 and the battery 403 are fixed to the inner wall of the mounting housing 1012. The pressure sensor 401, the buzzer 402, and the battery 403 are connected in series by wires. When the pressure sensor 401 detects an abnormal pressure value, the buzzer 402 is powered on and emits an alarm sound.
[0052] Working principle: When the limiting plate 102 is in the initial position, the limiting protrusion 1021 is not inserted into the mounting hole 1011, and the sliding plate 302 is in the initial position of the mounting hole 1011 under the action of the auxiliary spring 303, without squeezing the locking block 301. At this time, the locking block 301 is restricted from rotating under the action of the return spring 305 and the return plate 306, so that the locking block 301 and the locking interface 1014 remain engaged without being affected by external force. Since one end of the locking block 301 is tightly engaged with the locking interface 1014 of the protective cover 1013, the opening of the protective cover 1013 is restricted, thereby realizing the anti-theft protection of the energy meter inside the mounting shell 1012. Even if the bolts are removed through the threaded hole 1015, the protective cover 1013 cannot be opened.
[0053] When the electricity meter needs to be inspected, replaced, or otherwise operated requiring the protective cover 1013 to be opened, the lower lock cylinder 10322 of the anti-theft lock 103 is turned by the key, causing the handle 1031 to push the fixing block 1023, which in turn causes the limiting plate 102 to slide towards the mounting plate 101. At this time, the spring 1022 is compressed. The limiting protrusion 1021 on the limiting plate 102 is simultaneously inserted into the corresponding mounting hole 1011, pushing the sliding plate 302 to slide along the mounting hole 1011 towards the locking block 301. During the sliding process, the sliding plate 302 presses the extension end of the locking block 301, causing the locking block 301 to rotate around the pivot. The end of the locking block that engages with the locking interface 1014 disengages from the locking interface 1014. At this time, the protective cover 1013 is released from lock, and the protective cover 1013 can be opened for related operations.
[0054] After the operation is completed, turn the key in the opposite direction to reset the handle 1031 and remove the external force on the limiting plate 102. The limiting plate 102 returns to its initial position under the elastic force of the spring 1022. The limiting protrusion 1021 exits from the mounting hole 1011. After the sliding plate 302 loses its compression, it returns to its initial position under the action of the auxiliary spring 303. The locking block 301 re-engages with the locking interface 1014 of the protective cover 1013 under the action of the reset spring 305 and the reset plate 306. The anti-theft component 3 returns to the anti-theft state and continues to protect the electricity meter.
[0055] I. Routine theft prevention and meter reading In daily use, the security door 2 is locked to the installation cabinet 1 by the security lock 103, the limit plate 102 is in the initial position, the snap-fit block 301 of the anti-theft component 3 is engaged with the snap-fit interface 1014 of the protective cover 1013, the electricity meter inside the installation shell 1012 is in a double anti-theft state, and when the pressure sensor 401 detects an abnormal pressure value, the buzzer 402 is powered on to emit an alarm sound, effectively preventing unauthorized personnel from debugging, moving or tampering with the electricity meter, and avoiding electricity theft.
[0056] Meter reading operation: After opening the anti-theft lock 103 and the anti-theft door 2, the staff can directly observe the reading of the electricity meter inside the mounting shell 1012 without operating the anti-theft component 3. After the meter reading is completed, the anti-theft door 2 is closed and the anti-theft lock 103 is locked again to restore the anti-theft status. The whole process does not require disassembling any parts, is convenient to operate, and does not affect the normal operation of the electricity meter.
[0057] II. Inspection or replacement operation (disabling anti-theft status) Unlock security door 2: Use the matching key to turn the lock cylinder 1032 of the security lock 103, so that the bolt 1034 separates from the latch 202, and open the security door 2. Push the limiting plate 102: Continue to turn the lower lock cylinder 10322 with the key, so that the handle 1031 pushes the fixing block 1023, causing the limiting plate 102 to slide towards the mounting plate 101. The spring 1022 is compressed, the limiting protrusion 1021 is inserted into the mounting hole 1011, and the sliding plate 302 is pushed to squeeze the snap-fit block 301, so that the snap-fit block 301 is separated from the snap-fit interface 1014, and the lock of the protective cover 1013 is released. Open the protective cover 1013: Remove the bolt in the threaded hole 1015 on the end face of the protective cover 1013 to open the protective cover 1013 and inspect, replace or perform other operations on the electricity meter inside the mounting shell 1012. Restoring the anti-theft status: After the operation is completed, close the protective cover 1013 and reinstall the bolts to fix it; turn the key in the opposite direction to make the lower lock cylinder 10322 drive the handle 1031 to reset, the limit plate 102 returns to its initial position under the elastic force of the spring 1022, the limit protrusion 1021 exits the mounting hole 1011, the sliding plate 302 resets, and the locking block 301 re-engages with the locking interface 1014; finally, close the anti-theft door 2, turn the key to make the lock tongue 1034 engage with the buckle 202, complete the locking, and the entire device returns to the anti-theft status.
[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. An anti-theft electricity meter, characterized in that, The system includes an installation cabinet, which has a security door hinged to its front side, and the interior of the installation cabinet is equipped with parallel installation plates and limiting plates. The outer wall of the mounting plate is fixedly connected to the inner wall of the mounting cabinet. A plurality of arrayed mounting holes are opened through the end face of the mounting plate. An anti-theft component is slidably connected in each mounting hole. The anti-theft component extends to one side of the limiting plate. A mounting shell is provided on one side near the security door and corresponding to one of the security components. The mounting shell is fixedly connected to the mounting plate. An electricity meter is placed inside the mounting shell. A cable tray is provided at the bottom of the mounting shell. A protective cover is hinged to one side of the front of the mounting shell. A threaded hole is provided on the end face of the protective cover. A bolt passes through the threaded hole and is threadedly connected to the mounting shell. A snap-fit interface is provided on the inner wall of the protective cover away from the hinge side. The snap-fit interface is engaged with the security component. The limiting plate is located on the side of the mounting plate away from the security door. The end face of the limiting plate near the mounting plate has several limiting protrusions corresponding to the number of mounting holes and located on the sliding path of the mounting holes. The side wall of the limiting plate is fixed to the side wall of the mounting cabinet by a spring. A fixing block is fixed on the end face of the limiting plate away from the mounting plate. The security door is provided with an insertion hole, and the installation cabinet is provided with a security lock that is compatible with the insertion hole. One end of the security lock is in contact with the insertion hole, and the other end extends to the back of the limiting plate and is fixed with a handle. The handle is in contact with the fixing block. The anti-theft lock includes a lock cylinder and a lock shell. The lock shell is located outside the lock cylinder and is rotatably connected to it, and is fixed to the inner wall of the mounting cabinet. The anti-theft component cooperates with the mounting shell and the limiting plate to lock and unlock the protective cover.
2. The anti-theft electricity meter according to claim 1, characterized in that, The lock housing includes an upper lock housing near the security door and a lower lock housing near the limiting plate, which are designed as a single unit; the lock cylinder includes an upper lock cylinder rotatably connected in the upper lock housing and a lower lock cylinder rotatably connected in the lower lock housing, and the upper and lower lock housings are rotatably connected.
3. The anti-theft electricity meter according to claim 2, characterized in that, The inner wall of the upper lock housing is provided with several mounting grooves, and the outer wall of the upper lock cylinder is provided with a limiting groove corresponding to the position of the mounting groove. The bottom of the mounting groove is fixedly connected to a limiting lock tooth by a spring, and the limiting lock tooth enters the upper lock cylinder through the limiting groove.
4. The anti-theft electricity meter according to claim 2, characterized in that, The inner wall of the security door is fixed with a buckle, the inner wall of the upper lock shell is provided with a rotating groove through the outer wall, the outer wall of the upper lock cylinder is fixed with a lock tongue, the lock tongue is located in the rotating groove and rotates freely, and cooperates with the buckle to achieve locking.
5. The anti-theft electricity meter according to claim 4, characterized in that, The lower lock housing has an inner wall with a second mounting groove. The second mounting groove is located at the connection between the lower lock housing and the upper lock housing. The bottom of the second mounting groove is fixedly connected to a second limiting lock tooth by a spring. The second limiting lock tooth is designed as a wedge-shaped structure with the wedge-shaped surface facing the key insertion direction. When no key is inserted, the other end of the second limiting lock tooth abuts against the lower lock cylinder.
6. The anti-theft electricity meter according to claim 1, characterized in that, The anti-theft component consists of a snap-fit block and a sliding plate. The snap-fit block is rotatably connected to the side wall of the mounting shell via a rotating shaft. One end of the snap-fit block engages with the snap-fit interface on the inner wall of the protective cover, and the other end extends to one side of the mounting hole and is located on the sliding path of the sliding plate. The sliding plate is slidably connected in the mounting hole. One end of the sliding plate contacts the limiting protrusion on the limiting plate, and the other end faces the snap-fit block.
7. The anti-theft electricity meter according to claim 6, characterized in that, An auxiliary spring is fixed to the side of the sliding plate facing the mounting hole, and the other end of the auxiliary spring is fixed to the mounting plate; the snap-fit block has an arc-shaped force-bearing chamfer on the side near the sliding plate, and the arc-shaped force-bearing chamfer is located at the squeezing force point of the sliding plate.
8. The anti-theft electricity meter according to claim 6, characterized in that, The bottom of the mounting housing is fixed with several return springs, and the return springs together fix a return plate. In the initial state, the return plate presses the snap-fit block to restrict its rotation, so that the snap-fit block engages with the snap-fit interface.
9. The anti-theft electricity meter according to claim 1, characterized in that, It also includes an alarm device, which includes a pressure sensor, a buzzer and a battery. The pressure sensor is fixed at the joint between the protective cover and the snap-fit block. The buzzer and battery are fixed to the inner wall of the mounting housing. The pressure sensor, buzzer and battery are connected in series by wires. When the pressure sensor detects an abnormal pressure value, the buzzer is powered on and emits an alarm sound.
10. The anti-theft electricity meter according to claim 1, characterized in that, When the limit plate is pushed to move, the limit protrusion slides to the corresponding mounting hole and pushes the anti-theft component into the mounting housing; after the external force is removed, the limit plate is reset under the action of the spring force, the limit protrusion leaves the mounting hole, and the anti-theft component returns to the working position. In daily use, the security door is locked to the installation cabinet by the security lock, the limit plate is in the initial position, and the snap-fit block of the security component is engaged with the snap-fit interface of the protective cover; When reading the meter, staff can simply open the security lock and security door and observe the reading of the electricity meter inside the casing to complete the meter reading.