Anti-disassembly mechanical lock structure of electric meter box

Abstract

The utility model belongs to the electric meter box equipment technical field especially, relate to a kind of anti-disassembly electric meter box mechanical lock structure, in view of the poor anti-disassembly performance of existing device etc., lead to electric meter box to be vulnerable to illegal opening, and further cause electricity stealing, power facility damage and safety accident and other problems, the present scheme is as follows, a kind of anti-disassembly electric meter box mechanical lock structure, including electric meter box and the turnover door being rotatably connected in electric meter box one side by hinge;The utility model has the beneficial effects that: gear double-toothed plate drives bilateral U-shaped clamping plate symmetrical locking, wedge plate and L-shaped locking block form secondary limiting, stress point is dispersed, violent opening difficulty is improved, L-shaped special lock head is corresponded through non-standardization adaptive hole and control rod, only special lock head can drive unlocking, cooperate with guide block and annular groove self-locking, prevent technical cracking and violent extraction, strengthen speciality and security.

Description

Technical Field

[0001] This utility model relates to a mechanical lock structure, specifically a tamper-proof mechanical lock structure for an electric meter box, belonging to the technical field of electric meter box equipment. Background Technology

[0002] As a critical infrastructure for electricity metering and distribution systems, electricity meter boxes are widely distributed in residential communities, industrial parks, and public facilities areas. Their security performance directly affects the accuracy of electricity metering, the integrity of power facilities, and the order of electricity use in society. With the continuous growth of electricity demand and the increasing complexity of power networks, the security threats faced by electricity meter boxes are becoming increasingly diverse, and traditional mechanical lock structures are no longer sufficient to meet current protection requirements.

[0003] In the prior art, such as the convenient meter box lock disclosed in announcement number CN2502276Y, the lock body structure is simple and the cost is low. It is convenient to use because it eliminates the trouble of fixing the lock body. However, the above-mentioned prior art has the following shortcomings: the above-mentioned meter box lock is opened and closed by means of bolt connection, which results in poor anti-tampering performance, making the meter box easy to be illegally opened, which in turn leads to problems such as electricity theft, damage to power facilities and safety accidents. Summary of the Invention

[0004] The purpose of this utility model is to provide a tamper-proof mechanical lock structure for electric meter boxes to solve the problem that the above-mentioned devices have poor anti-tampering performance, which makes the meter boxes easy to be illegally opened, thereby causing problems such as electricity theft, damage to power facilities and safety accidents.

[0005] This utility model achieves the above objectives through the following technical solution: a tamper-proof electric meter box mechanical lock structure, including an electric meter box and a flip door that is rotatably connected to one side of the electric meter box via a hinge; The surface of the flip door is covered with a liner, and a rotating sleeve is installed inside the liner. One end of the rotating sleeve extends into the meter box and is connected to a gear installed inside the meter box. The surface of the gear has two parallel toothed plates meshing with each other. U-shaped clamps are fixedly installed at the ends of the two toothed plates that are far apart from each other. The inner sidewall of the meter box is symmetrically fitted with clamps that are compatible with the two sets of U-shaped clamps.

[0006] As a further embodiment of this utility model: guide blocks are fixedly installed on the same side of both toothed plates, and a strip groove adapted to the guide block is opened on the inner surface of the flip door. Both toothed plates are slidably connected to the inner surface of the flip door through the guide block and the strip groove.

[0007] As a further improvement of this utility model: fixed guide blocks are fixedly installed on the top and bottom of the inner side of the flip door, and L-shaped locking blocks are slidably connected to the surface of the fixed guide blocks. Wedge plates are fixedly installed on the surface of the guide blocks. When locking the box, the wedge plates slide against the bottom of the L-shaped locking blocks.

[0008] As a further embodiment of this utility model: a T-shaped rod is slidably connected to the surface of the L-shaped locking block. One end of the T-shaped rod passes through the L-shaped locking block and is fixedly connected to the fixed guide block. A spring is sleeved on the surface of the T-shaped rod. One end of the spring abuts against the fixed guide block, and the other end of the spring abuts against the L-shaped locking block.

[0009] As a further embodiment of this utility model: multiple control rods are slidably connected to one end of the rotating sleeve, and each of the multiple control rods has a diagonal rod installed at one end extending into the rotating sleeve. A fixing ring is fixed inside the rotating sleeve, and an insert rod is slidably connected to the surface of the fixing ring. One end of the insert rod passes through the fixing ring and the rotating sleeve in sequence and is inserted into a locking groove opened on the inner surface of the lining. A fixing block is installed at the other end of the insert rod, and the diagonal rod is slidably connected in the diagonal rod slot opened in the fixing block.

[0010] As a further improvement of this utility model: an L-shaped lock head is slidably inserted into the inner lining. One end of the L-shaped lock head has multiple matching holes that are adapted to the control rods. The depths of the multiple matching holes are different. The L-shaped lock head is inserted into the inner lining, and the multiple control rods are inserted into the corresponding matching holes one by one. The control rods and the inclined rods move synchronously to release the restriction on the rotating sleeve.

[0011] As a further improvement of this utility model: one end of each of the multiple control levers is fixed with a tension spring, and the other end of the tension spring is fixedly installed inside the rotating sleeve.

[0012] As a further embodiment of this utility model: a guide block is fixedly installed on one side surface of the L-shaped lock head, guide grooves are distributed along its axial direction on the inner surface of the liner, and an annular groove is formed on the inner wall of the liner, with the guide grooves and the annular grooves connected.

[0013] The beneficial effects of this utility model are: This utility model utilizes a combination of structures including a rotating sleeve, a U-shaped locking plate, a locking sleeve, an L-shaped locking block, a T-shaped rod, a wedge plate, an L-shaped lock head, an adapter hole, a control rod, a plug rod, and a locking groove. Employing a transmission structure with gears and double-toothed plates meshing, it drives the U-shaped locking plates on both sides to simultaneously engage with the locking sleeve inside the meter box, forming a symmetrical first layer of locking. The wedge plate and the inclined surfaces of the L-shaped locking block then engage to form a second layer of locking. Simultaneously with the U-shaped locking plates completing the locking, the L-shaped locking block, under the action of a spring, tightly abuts against the wedge plate, forming a lateral limit. This effectively prevents the locking from loosening due to external force vibration or springback. Compared to traditional single-tongue locking, this dual-sided synchronous locking method spatially disperses the force points, making it impossible for criminals to break the locking structure by applying force at a single point, significantly increasing the difficulty of forced entry.

[0014] The L-shaped lock cylinder is a specialized component. Its surface features adapter holes of varying depths that uniquely correspond to the control levers within the rotating sleeve. Only this specialized lock cylinder can drive multiple control levers to move synchronously, thereby disengaging the insertion rod from the locking groove. This non-standardized adapter design fundamentally eliminates the possibility of technical unlocking using general-purpose tools or counterfeit keys. It specifically constructs a protective barrier against technical hacking attempts. The cooperation between the guide block and the ring groove forms a mechanical self-locking structure. After insertion, the L-shaped lock cylinder must be rotated to a specific angle to lock, preventing unauthorized personnel from forcibly removing the lock cylinder and further enhancing the specialization and security of the unlocking process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural diagram of the internal structure of the meter box in this utility model; Figure 3 This is a schematic diagram of the side structure of the flip door in this utility model; Figure 4 This is a schematic diagram of the structure of the inner liner, rotating sleeve, annular groove and guide block in this utility model; Figure 5 This is a structural schematic diagram of the adapter hole, control rod, inclined rod, and fixing ring in this utility model; Figure 6 This is a schematic diagram of the structure of the insert rod and the fixing block in this utility model; Figure 7 This is a schematic diagram of the structure of the wedge plate, spring, toothed plate and gear in this utility model; Figure 8 In this utility model Figure 4 An enlarged schematic diagram of the structure at point A in the diagram.

[0016] In the diagram: 1. Meter box; 2. Flip-top door; 3. Lining; 4. Rotating sleeve; 5. Gear; 6. Tooth plate; 7. Guide block; 8. U-shaped clamping plate; 9. Sleeve; 10. Strip groove; 11. Fixed guide block; 12. L-shaped locking block; 13. T-shaped rod; 14. Spring; 15. Wedge plate; 16. L-shaped lock head; 17. Adapter hole; 18. Control rod; 19. Tension spring; 20. Diagonal rod; 21. Fixing ring; 22. Fixing block; 23. Insert rod; 24. Guide block; 25. Guide groove; 26. Ring groove; 27. Locking groove; 28. Diagonal rod slot. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1 like Figures 1 to 8 As shown, a tamper-proof electric meter box mechanical lock structure includes an electric meter box 1 and a flip door 2 that is rotatably connected to one side of the electric meter box 1 via a hinge; A liner 3 is installed through the surface of the flip door 2. A rotating sleeve 4 is installed inside the liner 3. One end of the rotating sleeve 4 extends into the meter box 1 and is connected to a gear 5 installed inside the meter box 1. Two parallel toothed plates 6 mesh with the surface of the gear 5. U-shaped clamping plates 8 are fixedly installed at the ends of the two toothed plates 6 that are far apart from each other. The inner sidewall of the meter box 1 is symmetrically equipped with clamping sleeves 9 that are adapted to the two sets of U-shaped clamping plates 8.

[0019] The rotating sleeve 4 is connected to the gear 5, which in turn meshes with two parallel toothed plates 6, ensuring the synchronicity of the movement of the two toothed plates 6. This allows the two U-shaped locking plates 8 to accurately and smoothly engage or disengage from the locking sleeves 9 on the inner wall of the meter box 1, improving the reliability of the locking and opening process. The two U-shaped locking plates 8, in conjunction with the corresponding locking sleeves 9, lock the flip door 2 from both sides. Compared to a single locking tongue structure, this greatly increases the difficulty for criminals to forcefully open the door. At the same time, the entire transmission structure is hidden inside the meter box 1 and the flip door 2, reducing exposed parts and making it difficult for criminals to find leverage points for prying and other destructive acts. This effectively improves the anti-dismantling capability of the meter box 1 and reduces the probability of theft, damage, and electricity theft of equipment inside the meter box 1.

[0020] Furthermore, guide blocks 7 are fixedly installed on the same side of both toothed plates 6, and strip grooves 10 adapted to guide blocks 7 are opened on the inner surface of the flip door 2. Both toothed plates 6 are slidably connected to the inner surface of the flip door 2 through guide blocks 7 and strip grooves 10.

[0021] The guide block 7 is embedded in the strip groove 10, ensuring that the toothed plate 6 can only move in a straight line along the extension direction of the strip groove 10, preventing the toothed plate 6 from shifting, tilting, or wobbling under the drive of the gear 5. This ensures that the two toothed plates 6 always remain parallel, ensuring that the U-shaped retaining plate 8 at its end can accurately align with the retaining sleeve 9 on the inner wall of the meter box 1, improving the accuracy of the locking process and reducing jamming or incomplete locking caused by the offset of the toothed plate 6.

[0022] Furthermore, fixed guide blocks 11 are fixedly installed on the top and bottom of the inner side of the flip door 2. An L-shaped locking block 12 is slidably connected to the surface of the fixed guide block 11. A wedge plate 15 is fixedly installed on the surface of the guide block 7. When locking the box, the wedge plate 15 slides against the bottom of the L-shaped locking block 12.

[0023] When the locking operation is performed, the guide block 7 moves with the toothed plate 6, and the wedge plate 15 slides against the bottom of the L-shaped locking block 12. Due to the inclined surface characteristics of the wedge plate 15, it will generate an upward pushing force on the L-shaped locking block 12, so that the L-shaped locking block 12 is stuck inside the meter box 1 for secondary locking. At the same time, it slides along the surface of the fixed guide block 11 and forms a lateral limit on the movement trajectory of the toothed plate 6. This dynamic cooperation can prevent the toothed plate 6 from loosening due to external force vibration or slight rebound at the moment when the U-shaped card plate 8 is inserted into the card sleeve 9, through the contact between the L-shaped locking block 12 and the wedge plate 15, ensuring the immediate stability of the locking state.

[0024] Furthermore, a T-shaped rod 13 is slidably connected to the surface of the L-shaped locking block 12. One end of the T-shaped rod 13 passes through the L-shaped locking block 12 and is fixedly connected to the fixed guide block 11. A spring 14 is sleeved on the surface of the T-shaped rod 13. One end of the spring 14 abuts against the fixed guide block 11, and the other end of the spring 14 abuts against the L-shaped locking block 12.

[0025] When the wedge plate 15 moves with the toothed plate 6 and pushes the L-shaped locking block 12 to slide along the fixed guide block 11, the spring 14 will generate elastic potential energy due to compression. When the locking action is completed and the wedge plate 15 no longer applies the pushing force, the elastic potential energy of the spring 14 is released, and the L-shaped locking block 12 is driven to slide and reset along the T-shaped rod 13 through the pushing force.

[0026] Example 2 Improvements based on Example 1: Furthermore, multiple control rods 18 are slidably connected to one end of the rotating sleeve 4. Each of the multiple control rods 18 is equipped with a diagonal rod 20 at one end extending into the rotating sleeve 4. A fixing ring 21 is fixed inside the rotating sleeve 4. An insert rod 23 is slidably connected to the surface of the fixing ring 21. One end of the insert rod 23 passes through the fixing ring 21 and the rotating sleeve 4 and is inserted into a locking groove 27 opened on the inner surface of the inner lining 3. A fixing block 22 is installed at the other end of the insert rod 23. The diagonal rod 20 is slidably connected to the diagonal rod slot 28 opened in the fixing block 22.

[0027] Under the constraint of the fixing ring 21, multiple sets of insert rods 23 can simultaneously penetrate the rotating sleeve 4 and be inserted into the locking groove 27 of the inner liner 3, forming a uniform lock on the rotating sleeve 4 from the circumferential direction. Compared with single-point locking, this multi-point distributed structure can disperse the torque force on the rotating sleeve 4, avoid the failure of a single locking point due to force concentration, significantly improve the stability of the connection between the rotating sleeve 4 and the inner liner 3, and prevent the rotating sleeve 4 from being forcibly rotated.

[0028] Furthermore, the inner liner 3 is slidably inserted with an L-shaped lock head 16. One end of the L-shaped lock head 16 has multiple matching holes 17 that are adapted to the control rods 18. The depths of the multiple matching holes 17 are different. When the L-shaped lock head 16 is inserted into the inner liner 3, the multiple control rods 18 are inserted into the corresponding matching holes 17 one by one. The control rods 18, together with the inclined rods 20, move synchronously to release the restriction on the rotating sleeve 4.

[0029] Only when the dedicated L-shaped lock head 16 is inserted can each control lever 18 be precisely embedded in the corresponding depth of the adapter hole 17. This non-standard adapter design completely eliminates the possibility of opening with general tools or counterfeit keys, blocking the technical cracking path from the source and greatly improving the anti-theft level.

[0030] Furthermore, one end of each of the multiple control levers 18 is fixed with a tension spring 19, and the other end of the tension spring 19 is fixedly installed inside the rotating sleeve 4.

[0031] When the L-shaped lock head 16 is pulled out from the inner liner 3, the tension spring 19 will generate a contraction force, pulling the control lever 18 back to its initial position. This ensures that after the unlocking operation is completed, the control lever 18 will promptly return to its working state with components such as the diagonal bar 20 and the insertion bar 23, preparing for the next locking operation and avoiding subsequent locking failure due to the positional displacement of the control lever 18.

[0032] Furthermore, a guide block 24 is fixedly installed on one side surface of the L-shaped lock head 16, and guide grooves 25 are distributed along its axial direction on the inner surface of the inner liner 3. An annular groove 26 is formed on the inner wall of the inner liner 3, and the guide grooves 25 and the annular grooves 26 are connected.

[0033] The guide block 24 slides along the guide groove 25 distributed along the inner liner 3, which can provide a clear trajectory constraint for the insertion and extraction process of the L-shaped lock head 16. This guiding effect ensures that the L-shaped lock head 16 will not deviate or tilt during insertion and extraction, so that the adapter hole 17 on the lock head can be accurately aligned with the control rod 18 inside the rotating sleeve 4, avoiding component wear or operation jamming caused by alignment deviation, and greatly improving the smoothness of unlocking and locking operations.

[0034] Working principle: During the opening process, the L-shaped lock head 16 is first slid into the inner liner 3, so that the guide block 24 on the outside of the L-shaped lock head 16 enters the guide groove 25 from the annular groove 26. During the sliding process, the adapter hole 17 applies a force to the control rod 18. The control rod 18 moves against the tension of the tension spring 19, which drives the inclined rod 20 to move. The inclined rod 20 drives the insertion rod 23 to disengage from the locking groove 27 through the fixing block 22, releasing the limit on the rotating sleeve 4. Then, the L-shaped lock head 16 is operated to drive the rotating sleeve 4 to rotate, which in turn drives the gear 5 to rotate in the opposite direction, so that the two tooth plates 6 move closer to each other. The U-shaped locking plate 8 disengages from the sleeve 9. At the same time, the wedge plate 15 moves with the guide block 7 and no longer applies pressure to the L-shaped locking block 12. The L-shaped locking block 12 remains in place under the action of the spring 14. After the U-shaped locking plate 8 is completely disengaged from the sleeve 9, the flip door 2 can be opened. Locking process: After closing the flip door 2, insert the L-shaped lock head 16 along the guide groove 25 of the inner lining 3 through the guide block 24. When the guide block 24 reaches the annular groove 26, rotate the L-shaped lock head 16 so that the guide block 24 enters the annular groove 26, initially fixing the L-shaped lock head 16. At this time, the control rod 18 is inserted into the corresponding adapter hole 17 of the L-shaped lock head 16 under the action of the tension spring 19. Due to the different depths of the adapter holes 17, the control rod 18 drives the inclined rod 20 to move. The inclined rod 20 slides in the slot of the fixing block 22, causing the insertion rod 23 to slide on the fixing ring 21 and insert into the locking groove 27 of the inner lining 3, restricting rotation. Sleeve 4 rotates, then the rotating sleeve 4 rotates, driving gear 5 to rotate. Gear 5 drives two toothed plates 6 to move away from each other. Toothed plates 6 slide in the strip groove 10 through guide block 7, driving U-shaped clamping plate 8 to be inserted into the clamping sleeve 9 on the inner side wall of meter box 1. At the same time, wedge plate 15 on guide block 7 slides against the bottom of L-shaped locking block 12, causing L-shaped locking block 12 to slide on T-shaped rod 13 and compress spring 14. When U-shaped clamping plate 8 is fully inserted into clamping sleeve 9, L-shaped locking block 12 is reset under the action of wedge plate 15, slides out from fixed guide block 11, and is supported on the inner side wall of meter box 1, completing the locking. When the opening operation is performed, the multiple adapter holes 17 on the L-shaped lock head 16 have different depths and correspond one-to-one with the multiple control rods 18 inside the rotating sleeve 4. When the L-shaped lock head 16 is pulled out, the adapter holes 17 of different depths will apply different degrees of force to the corresponding control rods 18. Since one end of the control rod 18 is fixed with a tension spring 19, during the process of the L-shaped lock head 16 sliding in, the control rod 18 will overcome the tension of the tension spring 19 and move accordingly as the depth of the adapter hole 17 changes. Each control lever 18 has a slanted rod 20 installed at one end extending into the rotating sleeve 4. The slanted rod 20 is slidably connected to a slot on the surface of the fixing block 22 at the other end of the insert rod 23. When the control lever 18 moves synchronously under the action of the adapter hole 17, the slanted rod 20 slides synchronously in the slot of the fixing block 22, thereby pushing the insert rod 23 to slide on the surface of the fixing ring 21. Since the movement of multiple control levers 18 is carried out under the unified drive of the L-shaped locking head 16, the slanted rod 20 and the insert rod 23 connected to it will also move synchronously, so that multiple insert rods 23 can be moved out of the locking groove 27 on the inner surface of the inner liner 3 at the same time, thereby quickly releasing the rotation. The locking mechanism of the set 4 enables unlocking. The dedicated L-shaped lock head 16 and its matching holes 17 of varying depths are unique. Only the matching L-shaped lock head 16 can make the multiple control rods 18 move at the correct amplitude, thereby driving the insertion rods 23 to move out synchronously. This greatly reduces the possibility of criminals opening the lock by using counterfeit keys or other tools. On the other hand, the synchronous cooperation of multiple insertion rods 23 with the locking groove 27 increases the overall strength of the lock. When subjected to external prying force, the force borne by a single insertion rod 23 will be distributed to multiple insertion rods 23 and related connecting parts, making the lock more difficult to damage and effectively improving the anti-theft and anti-tampering properties of the meter box 1.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tamper-proof mechanical lock structure for an electric meter box, comprising an electric meter box (1) and a hinged rotating door (2) connected to one side of the electric meter box (1); characterized in that: The surface of the flip door (2) is covered with a liner (3), and a rotating sleeve (4) is provided inside the liner (3). One end of the rotating sleeve (4) extends into the meter box (1) and is connected to a gear (5) provided in the meter box (1). The surface of the gear (5) is meshed with two parallel toothed plates (6). U-shaped clamps (8) are fixedly installed at the ends of the two toothed plates (6) that are far apart from each other. The inner sidewall of the meter box (1) is symmetrically equipped with clamps (9) that are adapted to the two sets of U-shaped clamps (8).

2. The anti-tampering mechanical lock structure for an electric meter box according to claim 1, characterized in that: Guide blocks (7) are fixedly installed on the same side of both toothed plates (6). A strip groove (10) adapted to the guide block (7) is opened on the inner surface of the flip door (2). Both toothed plates (6) are slidably connected to the inner surface of the flip door (2) through the guide block (7) and the strip groove (10).

3. The anti-tampering mechanical lock structure for an electric meter box according to claim 2, characterized in that: The top and bottom of the inner side of the flip door (2) are fixedly installed with a fixed guide block (11). The surface of the fixed guide block (11) is slidably connected with an L-shaped locking block (12). The surface of the guide block (7) is fixedly installed with a wedge plate (15). When locking the box, the wedge plate (15) slides against the bottom of the L-shaped locking block (12).

4. The anti-tampering mechanical lock structure for an electric meter box according to claim 3, characterized in that: The surface of the L-shaped locking block (12) is slidably connected to a T-shaped rod (13). One end of the T-shaped rod (13) passes through the L-shaped locking block (12) and is fixedly connected to the fixed guide block (11). A spring (14) is sleeved on the surface of the T-shaped rod (13). One end of the spring (14) abuts against the fixed guide block (11), and the other end of the spring (14) abuts against the L-shaped locking block (12).

5. The anti-tampering mechanical lock structure for an electric meter box according to claim 1, characterized in that: Multiple control rods (18) are slidably connected to one end of the rotating sleeve (4). Each of the multiple control rods (18) extending into the rotating sleeve (4) is equipped with a diagonal rod (20). A fixing ring (21) is fixed inside the rotating sleeve (4). A plug rod (23) is slidably connected to the surface of the fixing ring (21). One end of the plug rod (23) passes through the fixing ring (21) and the rotating sleeve (4) and is inserted into a locking groove (27) opened on the inner surface of the liner (3). A fixing block (22) is installed at the other end of the plug rod (23). The diagonal rod (20) is slidably connected in the diagonal rod slot (28) opened in the fixing block (22).

6. The anti-tampering electric meter box mechanical lock structure according to claim 5, characterized in that: The inner lining (3) is slidably inserted with an L-shaped lock head (16). One end of the L-shaped lock head (16) is provided with multiple adapter holes (17) that are adapted to the control rods (18). The depths of the multiple adapter holes (17) are different. The L-shaped lock head (16) is inserted into the inner lining (3), and the multiple control rods (18) are inserted into the corresponding adapter holes (17) one by one. The control rods (18) move synchronously together with the inclined rod (20) to release the restriction on the rotating sleeve (4).

7. The anti-tampering electric meter box mechanical lock structure according to claim 5, characterized in that: One end of each of the multiple control levers (18) is fixed with a tension spring (19), and the other end of the tension spring (19) is fixedly installed inside the rotating sleeve (4).

8. The anti-tampering mechanical lock structure for an electric meter box according to claim 6, characterized in that: A guide block (24) is fixedly installed on one side surface of the L-shaped lock head (16), and guide grooves (25) are distributed along its axial direction on the inner surface of the liner (3). An annular groove (26) is provided on the inner wall of the liner (3), and the guide groove (25) and the annular groove (26) are connected.

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