A circuit anti-disconnection structure for smart energy meters

Abstract

This application provides a circuit anti-disconnection structure for smart energy meters, relating to the field of smart energy meter technology. It includes an energy meter body with a wiring groove on the lower front side. A limiting plate is fixedly installed inside the wiring groove, and the limiting plate has several limiting holes. Locking components are provided on the inner walls of the limiting holes. This application utilizes the coordinated use of the energy meter body, limiting plate, wiring groove, limiting holes, hidden groove, arc-shaped clamp, fixed groove, movable block, connecting block, knob, lead screw, worm gear, worm wheel, and sliding groove. The knob drives the worm gear to rotate the lead screw, causing the movable block to push the arc-shaped clamp out of the hidden groove via the connecting block, rigidly clamping the wire within the limiting holes. This structure avoids the aging and failure problems caused by long-term pressure on elastic materials, and the clamping force can be flexibly adjusted to accommodate cables of different diameters.

Description

Technical Field

[0001] This utility model relates to the field of smart energy meter technology, and more specifically, to a circuit anti-disconnection structure for smart energy meters. Background Technology

[0002] As a core infrastructure device for data acquisition in smart grids, the reliability of smart meters' wiring directly affects the accuracy of electricity metering, the integrity of user electricity consumption data, and the electrical safety of on-site operations and equipment operation. Loose, poorly connected, or disconnected wiring can not only lead to metering errors and even data loss, but may also cause serious safety accidents such as electric arcing or overheating. Therefore, ensuring a long-term stable connection at the meter's wiring terminals is crucial.

[0003] For example, the specification of the "Anti-detachment Structure for Smart Energy Meter Line" disclosed in Chinese Utility Model Patent (Publication No.: CN223955665U) states that: by setting up a clamping frame, a first pressing block and a second pressing block, when the protective cover is installed on the main body of the energy meter, the first pressing block and the second pressing block will respectively press the side wall of the clamping frame that is in contact with it, thereby causing the side wall of the clamping frame to undergo elastic deformation, clamping and fixing the cable located inside it, so that when the cable is subjected to tensile force, the connection point will not be stressed, and the cable will be prevented from falling off;

[0004] Regarding the aforementioned technologies, this device has some shortcomings. In actual use, the side wall of the clamping frame is made of elastic material, which is prone to permanent deformation or material aging after long-term pressure, leading to a decrease in clamping force or even failure. Its U-shaped structure has limited adaptability to changes in cable diameter, making it difficult to accommodate thinner or thicker cables, thus limiting its applicability. In addition, the sealing block and the inner wall of the clamping frame are interference-fitted, resulting in significant friction and wear during disassembly. Repeated disassembly and reassembly reduce the sealing performance, affecting long-term reliability.

[0005] Therefore, we have made improvements to this by proposing a circuit anti-disconnection structure for smart energy meters. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a circuit anti-disconnection structure for smart energy meters, solving the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A smart energy meter circuit anti-disconnection structure includes an energy meter body, a wiring groove is provided on the lower front of the energy meter body, a limit plate is fixedly installed inside the wiring groove, a plurality of limit holes are provided on the limit plate, and a locking component is provided on the inner wall of the limit holes.

[0009] The locking assembly includes a hidden groove formed on the inner wall of the limiting hole, a fixing groove formed on the inner wall of the hidden groove, a sliding groove formed on the front side of the inner wall of the fixing groove, a lead screw rotatably mounted inside the sliding groove, a movable block sleeved on the outer wall of the lead screw, the movable block slidably mounted on the sliding groove and the fixing groove, a connecting block fixedly mounted on one side of the movable block, an arc-shaped clamp adapted to the hidden groove fixedly mounted on one end of the connecting block, and an operating component provided on one side inside the sliding groove.

[0010] As a preferred technical solution of this application, the operating component includes a worm gear rotatably mounted on one side of the slide groove, the front end of the worm gear passing through the limiting plate and extending to the outside of the front of the limiting plate, a knob fixedly mounted on the front end of the worm gear, and a worm wheel fixedly mounted on the outer wall of one end of the lead screw, the worm gear meshing with the worm wheel.

[0011] As a preferred technical solution of this application, a cross groove is formed on the outer surface of the knob.

[0012] As a preferred technical solution of this application, anti-slip pads are adhered to both the inner wall of the limiting hole and the inner surface of the arc-shaped clamp.

[0013] As a preferred technical solution of this application, the movable block is provided with a threaded hole that is compatible with the lead screw, and the movable block is threadedly connected to the lead screw through the threaded hole.

[0014] As a preferred technical solution of this application, a protective cover is hinged to the front of the main body of the electricity meter at the opening of the wiring groove. A locking post is fixedly installed on both sides of the protective cover. An arc-shaped locking groove is opened on the front of both sides of the inner wall of the wiring groove. An elastic metal sheet is fixedly installed on the inner wall of the arc-shaped locking groove. The locking post is elastically engaged with the arc-shaped locking groove through the elastic metal sheet.

[0015] As a preferred technical solution of this application, the origin of the arc-shaped slot is adapted to the position of the hinge point on the protective cover and the main body of the electricity meter.

[0016] As a preferred technical solution of this application, the protective cover has an L-shaped structure, and protrusions are provided on the outer surface of the protective cover.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] In the scheme of this application:

[0019] 1. Through the coordinated use of the main body of the electricity meter, limit plate, wiring groove, limit hole, hidden groove, arc-shaped clamp, fixed groove, movable block, connecting block, knob, lead screw, worm gear, worm wheel, and slide groove, the knob drives the worm gear and worm wheel to rotate the lead screw, causing the movable block to push the arc-shaped clamp out of the hidden groove via the connecting block, rigidly clamping the wire in the limit hole. This structure avoids the aging and failure problem caused by long-term pressure on elastic materials. By rotating the knob to control the number of rotations of the lead screw, the extension of the arc-shaped clamp can be precisely adjusted, thereby changing the clamping gap between the arc-shaped clamp and the inner wall of the limit hole, realizing flexible adjustment of clamping force and adaptability to clamping cables of different diameters; at the same time, no interference fit is required, and the clamping force can be maintained after repeated disassembly and assembly, effectively improving the reliability of long-term use.

[0020] 2. Through the coordinated use of the protective cover, locking post, arc-shaped groove, and elastic metal sheet, the protective cover can be quickly flipped and locked in place. The locking post slides along the arc-shaped groove and engages elastically with the elastic metal sheet, allowing the cover to be opened and closed without tools, making operation convenient and efficient. At the same time, the protective cover physically isolates the wiring groove, effectively preventing foreign objects from entering and personnel from accidentally touching it, thus improving the level of electrical safety protection. Furthermore, the elastic locking structure can maintain reliable locking force even after repeated disassembly and assembly, facilitating daily operation and maintenance. Attached Figure Description

[0021] Figure 1 A three-dimensional structural diagram of an anti-disconnection structure for a smart energy meter circuit is provided in this application;

[0022] Figure 2 A schematic diagram of another perspective of the anti-disconnection structure for a smart energy meter circuit provided in this application;

[0023] Figure 3 This application provides a partial structural schematic diagram of an anti-disconnection structure for a smart energy meter circuit.

[0024] Figure 4 A cross-sectional view of the limiting plate in the anti-disconnection structure of a smart energy meter circuit provided in this application;

[0025] Figure 5 This application provides a circuit anti-disconnection structure for a smart energy meter. Figure 4 Enlarged structural diagram at point A in the middle.

[0026] The image shows:

[0027] 1. Electricity meter body; 2. Protective cover; 3. Limiting plate; 4. Wiring groove; 5. Locking post; 6. Arc-shaped locking groove; 7. Elastic metal sheet; 8. Limiting hole; 9. Hidden groove; 10. Arc-shaped clamp; 11. Fixing groove; 12. Movable block; 13. Connecting block; 14. Knob; 15. Lead screw; 16. Worm gear; 17. Worm wheel; 18. Slide groove. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Example

[0032] Please refer to Figures 1-5 A smart energy meter circuit anti-disconnection structure includes an energy meter body 1, a wiring groove 4 is provided on the lower front of the energy meter body 1, a limit plate 3 is fixedly installed inside the wiring groove 4, a plurality of limit holes 8 are provided on the limit plate 3, and a locking component is provided on the inner wall of the limit hole 8.

[0033] The locking assembly includes a hidden groove 9 formed on the inner wall of the limiting hole 8, a fixing groove 11 formed on the inner wall of the hidden groove 9, a sliding groove 18 formed on the front side of the inner wall of the fixing groove 11, a lead screw 15 rotatably mounted inside the sliding groove 18, a movable block 12 sleeved on the outer wall of the lead screw 15, the movable block 12 slidably mounted on the sliding groove 18 and the fixing groove 11, a connecting block 13 fixedly mounted on one side of the movable block 12, an arc-shaped clamp 10 adapted to the hidden groove 9 fixedly mounted on one end of the connecting block 13, and an operating component provided on one side inside the sliding groove 18.

[0034] Furthermore, the operating components include a worm gear 16 rotatably mounted on one side inside the slide groove 18. The front end of the worm gear 16 passes through the limiting plate 3 and extends to the outside of the front of the limiting plate 3. A knob 14 is fixedly mounted on the front end of the worm gear 16. A worm wheel 17 is fixedly mounted on the outer wall of one end of the lead screw 15, and the worm gear 16 meshes with the worm wheel 17. The worm gear transmission has a self-locking characteristic, which can maintain a stable clamping state after the force is stopped, effectively preventing the lead screw 15 from reversing and loosening due to vibration or backlash. At the same time, it realizes the change of force transmission direction, so that the operating end can be arranged on the front of the limiting plate 3, which is convenient for the staff to operate directly outside the wiring slot 4 without having to put tools into the narrow space, significantly improving the convenience of use and the reliability of clamping.

[0035] Furthermore, a cross-shaped groove is provided on the outer surface of the knob 14. This facilitates manual rotation by the operator and is compatible with common tools such as Phillips screwdrivers. When tightening force is large or space is limited, tools can be used to lock and loosen the knob, improving the convenience and versatility of operation.

[0036] Furthermore, anti-slip pads are adhered to the inner wall of the limiting hole 8 and the inner surface of the arc-shaped clamp 10. The anti-slip pads can increase the coefficient of friction between the pads and the outer sheath of the wire, preventing the wire from coming out of the terminal when subjected to external force, and further improving the stability of the clamping. At the same time, the anti-slip pads are made of flexible material, which can form an elastic wrap around the wire, avoiding damage to the wire insulation layer by rigid clamping, and playing a role in protecting the cable.

[0037] Furthermore, the movable block 12 has a threaded hole that matches the lead screw 15, and the movable block 12 is threadedly connected to the lead screw 15 through the threaded hole. This allows the rotational motion of the lead screw 15 to be precisely converted into the linear movement of the movable block 12. Example

[0038] The anti-disconnection structure of the smart energy meter circuit provided in Embodiment 1 is further optimized. Specifically, a protective cover 2 is hinged to the front of the main body 1 of the energy meter at the opening of the wiring groove 4. A locking post 5 is fixedly installed on both sides of the protective cover 2. An arc-shaped locking groove 6 is opened on the front of both sides of the inner wall of the wiring groove 4. An elastic metal sheet 7 is fixedly installed on the inner wall of the arc-shaped locking groove 6. The locking post 5 is elastically locked with the arc-shaped locking groove 6 through the elastic metal sheet 7.

[0039] Furthermore, the origin of the arc-shaped groove 6 is matched with the hinge point on the protective cover 2 and the main body of the electricity meter 1. This ensures that the locking post 5 slides smoothly along the trajectory of the arc-shaped groove 6 during the opening and closing of the protective cover 2, preventing jamming or derailment.

[0040] Furthermore, the protective cover 2 has an L-shaped structure, which can better fit the corner contour of the wiring groove 4, improve the sealing performance and structural strength. The outer surface of the protective cover 2 is provided with protrusions, which make it easy to apply force with fingers, so as to realize the tool-free quick opening of the protective cover and improve the convenience of daily operation and maintenance.

[0041] The usage process of the anti-disconnection structure for the circuit of a smart energy meter provided by this utility model is as follows:

[0042] In use, the wire is first passed through the limiting hole 8 on the limiting plate 3 and connected to the terminal in the wiring groove 4. Then, the locking component is driven by the operating component to clamp and fix the wire. Specifically, the operator uses a tool or manually rotates the knob 14. The knob 14 drives the worm gear 16 to rotate. The worm gear 16 drives the lead screw 15 to rotate inside the slide groove 18 through the meshing transmission with the worm wheel 17. Since the movable block 12 is threadedly connected to the lead screw 15 through the threaded hole and slidably installed on the slide groove 18 and the fixed groove 11, the rotation of the lead screw 15 is converted into the linear movement of the movable block 12 along the direction of the slide groove 18. The movable block 12 drives the arc-shaped clamp 10 to extend from the hidden groove 9 toward the center of the limiting hole 8 through the connecting block 13, thereby tightly clamping and fixing the wire in the limiting hole 8. After the wires are clamped, flip the protective cover 2 over and fasten it to the opening of the wiring groove 4. The locking posts 5 on both sides of the protective cover 2 will then be inserted into the arc-shaped locking grooves 6 on both sides of the inner wall of the wiring groove 4, and form an elastic locking with the elastic metal piece 7 on the inner wall of the arc-shaped locking groove 6, so that the protective cover 2 can reliably cover the opening of the wiring groove 4, forming physical isolation and protection for the wiring area. This anti-detachment structure adopts a rigid threaded mechanical locking mechanism, which not only avoids the problem of permanent deformation or aging of elastic materials after long-term pressure, leading to a decrease in clamping force, but also allows for flexible adjustment of the clamping force according to actual needs by controlling the feed amount of the arc-shaped clamp 10 through the knob 14, adapting to cables of different diameters and solving the shortcomings of limited adaptability to changes in cable diameter and limited applicability. At the same time, the clamping and fixing of the arc-shaped clamp 10 and the wire does not rely on interference fit. When disassembling, simply rotate the knob 14 in the opposite direction to loosen the clamp. The clamping performance and stability are not affected after repeated disassembly and assembly. In addition, the protective cover 2 achieves quick opening and closing through the elastic engagement of the locking post 5 and the elastic metal piece 7, which can be completed without the aid of tools, effectively ensuring the convenience and reliability of protection and maintenance during long-term use.

[0043] It should be noted that all components used in this application are standard parts that can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets and welding that are mature in the prior art. The mechanical parts and electrical equipment adopt conventional models in the prior art. The circuit connection adopts conventional connection methods in the prior art. The electrical equipment is connected to an external safe power source. These will not be described in detail here.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A circuit anti-disconnection structure for a smart energy meter, characterized in that, The device includes an electricity meter body (1), a wiring groove (4) is provided on the lower front of the electricity meter body (1), a limiting plate (3) is fixedly installed inside the wiring groove (4), a plurality of limiting holes (8) are provided on the limiting plate (3), and a locking component is provided on the inner wall of the limiting hole (8). The locking assembly includes a hidden groove (9) on the inner wall of the limiting hole (8), a fixing groove (11) on the inner wall of the hidden groove (9), a sliding groove (18) on the front side of the inner wall of the fixing groove (11), a lead screw (15) is rotatably installed inside the sliding groove (18), a movable block (12) is sleeved on the outer wall of the lead screw (15), the movable block (12) is slidably installed on the sliding groove (18) and the fixing groove (11), a connecting block (13) is fixedly installed on one side of the movable block (12), an arc-shaped clamp (10) adapted to the hidden groove (9) is fixedly installed at one end of the connecting block (13), and an operating component is provided on one side inside the sliding groove (18).

2. The anti-disconnection structure for a smart energy meter circuit according to claim 1, characterized in that, The operating component includes a worm (16) rotatably mounted on one side inside the slide (18). The front end of the worm (16) passes through the limiting plate (3) and extends to the outside of the front of the limiting plate (3). A knob (14) is fixedly mounted on the front end of the worm (16). A worm wheel (17) is fixedly mounted on the outer wall of one end of the lead screw (15). The worm (16) meshes with the worm wheel (17).

3. The anti-disconnection structure for a smart energy meter circuit according to claim 2, characterized in that, A cross groove is provided on the outer surface of the knob (14).

4. The anti-disconnection structure for a smart energy meter circuit according to claim 1, characterized in that, Anti-slip pads are adhered to the inner wall of the limiting hole (8) and the inner surface of the arc-shaped clamp (10).

5. The anti-disconnection structure for a smart energy meter circuit according to claim 1, characterized in that, The movable block (12) has a threaded hole that matches the lead screw (15), and the movable block (12) is threadedly connected to the lead screw (15) through the threaded hole.

6. The anti-disconnection structure for a smart energy meter circuit according to claim 1, characterized in that, The front of the main body (1) of the electricity meter is hinged with a protective cover (2) at the opening of the wiring groove (4). The protective cover (2) is fixedly installed with locking posts (5) on both sides. The front of both sides of the inner wall of the wiring groove (4) is provided with an arc-shaped locking groove (6). An elastic metal sheet (7) is fixedly installed on the inner wall of the arc-shaped locking groove (6). The locking post (5) is elastically locked with the arc-shaped locking groove (6) through the elastic metal sheet (7).

7. The anti-disconnection structure for a smart energy meter circuit according to claim 6, characterized in that, The origin of the arc-shaped slot (6) is matched with the hinge point on the protective cover (2) and the main body (1) of the electricity meter.

8. The anti-disconnection structure for a smart energy meter circuit according to claim 6, characterized in that, The protective cover (2) has an L-shaped structure, and protrusions are provided on the outer surface of the protective cover (2).

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