An electric power meter box external lead connection device

Abstract

This utility model discloses an external lead-in wiring device for a power instrument box, belonging to the field of power equipment technology. It includes an instrument box body, with multiple fixing plates fixedly connected to the upper surface of the instrument box body. Connecting pipes are fixedly connected to the inner walls of each fixing plate, with the bottom ends of the connecting pipes extending into the interior of the instrument box body. Multiple positioning grooves are symmetrically formed on the outer sides of each connecting pipe. Rotating a rotating disk drives a series of components to adjust the position of an arc-shaped clamping plate. When the rotating disk is rotated, the threaded transmission between the inner and outer threaded sleeves causes the outer threaded sleeve to move axially, thereby causing a sliding seat to slide outside the connecting pipe. The sliding seat, through the cooperation of a limiting block and the connecting plate, pushes the connecting plate to slide within the positioning groove, ultimately moving the arc-shaped clamping plate. This allows for flexible adjustment of the position of the arc-shaped clamping plate according to the thickness of the conductor, ensuring that the arc-shaped clamping plate tightly fits the conductor surface regardless of conductor thickness.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically to an external lead-in wiring device for a power instrument box. Background Technology

[0002] In power systems, power instrument boxes are used to install various power monitoring and control instruments, and external wiring devices are key components for connecting the instrument box to external lines.

[0003] An investigation revealed that a Chinese utility model patent (publication number: CN213398687U) discloses an external wiring device for an electrical instrument box. The device includes an instrument box body with a sealed door at its front end. A positioning block is located at the upper end of the instrument box body. A connecting pipe is located inside the upper end of the instrument box body, inside the positioning block. A threaded tube is located on the outer surface of the upper end of the connecting pipe, with a rubber strip at the upper end of the threaded tube. An internally threaded knob is located on the outer side of the threaded tube, with a beveled tube at the upper end of the internally threaded knob. A fastening screw is inserted through the positioning block and the interior of the instrument box body, with a nut on the outer side of the fastening screw. A wire is inserted through the interior of the connecting pipe. This utility model's external wiring device for an electrical instrument box prevents the wire from being pulled by external forces, thus preventing the connection between the wire and the electrical instrument inside the instrument box body from breaking. It offers high stability and prevents short circuits.

[0004] While the aforementioned patent allows the rubber strips to clamp the wires by varying the inner diameter of the inclined tube, the six sets of rubber strips alone are insufficient to accommodate wires of different thicknesses. For example, when clamping thinner wires, only the portion of the rubber strip in contact with the inclined surface of the inner diameter of the tube will contract and deform. This results in a small contact area between the rubber strip and the wire. Since friction is related to the contact area, the small contact area leads to limited friction generated by the rubber strips. When the wire is pulled by an external force, this friction is insufficient to resist the force, causing the wire to easily slide between the rubber strips. This can loosen the connection between the wire and the power meter inside the power meter box, leading to poor contact.

[0005] Therefore, this utility model provides an external lead wire device for a power meter box to solve the above problems. Summary of the Invention

[0006] This utility model provides an external lead wire device for a power meter box, which aims to solve the problems mentioned in the background art.

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

[0008] An external wiring device for an electrical instrument box includes an instrument box body. Multiple fixing plates are fixedly connected to the upper surface of the instrument box body, and connecting pipes are fixedly connected to the inner walls of each fixing plate. The bottom ends of the connecting pipes extend into the interior of the instrument box body. Multiple positioning grooves are symmetrically formed on the outer sides of each connecting pipe. Connecting plates are slidably connected to the inner sides of each positioning groove. An arc-shaped clamping plate is fixedly connected between the ends of every two connecting plates, extending into the interior of the connecting pipe. A rotating seat is fixedly connected between the ends of the multiple positioning grooves on the outer wall of the connecting pipe. An adjusting disc is rotatably connected to the outer side of the rotating seat. Internal threaded sleeves are fixedly connected to both sides of the adjusting disc, and external threaded sleeves are threadedly connected to the inner sides of two internal threaded sleeves. A sliding seat is fixedly connected to the inner side of each external threaded sleeve, and the sliding seats are slidably connected to the outer sides of the connecting pipe.

[0009] Preferably, the inner side of each sliding seat is provided with multiple movable grooves, the inner side of each movable groove is adapted to the outer side of the connecting plate, and a limit block is fixedly connected to the port of each movable groove.

[0010] Preferably, the outer side of the connecting plate is provided with radial grooves, and the inner side of each radial groove is adapted to the outer side of the limiting block.

[0011] Preferably, one end of each of the two sliding seats is fixedly connected to a limiting frame on the outer wall of the connecting tube, and the outer walls of the two limiting frames are slidably connected to the inner walls of the two sliding seats respectively.

[0012] Preferably, a door is hinged to the front port of the instrument box body, and two mounting plates are symmetrically fixed to both sides of the instrument box body.

[0013] Preferably, each of the connecting pipes has a feed end fixedly connected to its top end, and the feed end has an outwardly flared port. Beneficial effects

[0014] This invention uses a rotating disc to drive a series of components in tandem, thereby adjusting the position of the arc-shaped clamping plate. When the disc is rotated, the threaded transmission between the inner and outer threaded sleeves causes the outer threaded sleeve to move axially, which in turn drives the sliding seat to slide on the outside of the connecting pipe. The sliding seat, through the cooperation of the limiting block and the connecting plate, pushes the connecting plate to slide in the positioning groove, ultimately causing the arc-shaped clamping plate to move. This allows for flexible adjustment of the position of the arc-shaped clamping plate according to the thickness of the wire. Regardless of the wire thickness, the arc-shaped clamping plate can closely fit the surface of the wire, greatly increasing the contact area with the wire. This effectively prevents the wire from becoming loose due to the small contact area between the clamping components and the wire when subjected to external force, thus ensuring the stability of the wire connection. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the clamping mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the driving structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure distribution of the connecting pipe of this utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure between the sliding seat and the connecting plate of this utility model;

[0020] Figure 6 This is a schematic diagram of the internal structure of the connecting pipe of this utility model;

[0021] Figure 7 This is a three-dimensional structural diagram of the sliding seat of this utility model.

[0022] In the picture:

[0023] 1. Instrument box body; 2. Fixing plate; 3. Connecting pipe; 4. Positioning groove; 5. Connecting plate; 6. Arc-shaped clamping plate; 7. Rotating seat; 8. Adjusting plate; 9. Internal threaded sleeve; 10. External threaded sleeve; 11. Sliding seat; 12. Movable groove; 13. Limiting block; 14. Radial groove; 15. Limiting frame; 16. Box door; 17. Mounting plate; 18. Feed end. Detailed Implementation

[0024] The technical solutions of the present utility model 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 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.

[0025] Please see Figures 1-7As shown, the purpose of this embodiment is to provide an external lead-in wiring device for an electrical instrument box, including an instrument box body 1. Multiple fixing plates 2 are fixedly connected to the upper surface of the instrument box body 1, and connecting pipes 3 are fixedly connected to the inner walls of the multiple fixing plates 2. The bottom ends of the connecting pipes 3 extend into the interior of the instrument box body 1. Multiple positioning grooves 4 are symmetrically opened on the outer side of the connecting pipes 3. Connecting plates 5 are slidably connected to the inner side of the multiple positioning grooves 4. An arc-shaped clamping plate 6 is fixedly connected between the ends of every two connecting plates 5, extending into the interior of the connecting pipe 3. A rotating seat 7 is fixedly connected between the ends of the multiple positioning grooves 4 on the outer wall of the connecting pipe 3. An adjusting plate 8 is rotatably connected to the outer side of the rotating seat 7. Internal threaded sleeves 9 are fixedly connected to both sides of the adjusting plate 8. External threaded sleeves 10 are threadedly connected to the inner sides of the two internal threaded sleeves 9. Sliding seats 11 are fixedly connected to the inner sides of the external threaded sleeves 10, and the sliding seats 11 are slidably connected to the outer side of the connecting pipe 3.

[0026] Multiple movable slots 12 are provided on the inner side of the sliding seat 11. The inner side of each movable slot 12 is adapted to the outer side of the connecting plate 5. Limiting blocks 13 are fixedly connected to the ports on the inner side of each movable slot 12.

[0027] Radial grooves 14 are provided on the outer side of the connecting plate 5, and the inner side of the radial grooves 14 is adapted to the outer side of the limiting block 13.

[0028] In this embodiment, when the wire is inserted into the connecting pipe 3, the adjusting disc 8 is rotated, causing it to rotate on the rotating seat 7. The rotating seat 7 supports and positions the adjusting disc 8, ensuring that it can rotate stably around the axis of the connecting pipe 3. Simultaneously, the adjusting disc 8 rotates, causing the internally threaded sleeves 9 fixedly connected to both sides to rotate synchronously. Through the threaded engagement with the two externally threaded sleeves 10, the two externally threaded sleeves 10 move relative to each other axially. This axial relative movement of the two externally threaded sleeves 10 simultaneously drives the connecting sliding seats 11 fixed to them to move synchronously. The two sliding seats 11 are slidably connected to the outside of the connecting pipe 3, thus making the connecting pipe 3 act as a guide rail, restricting the movement of the sliding... The moving direction of the sliding seat 11 allows it to slide smoothly only along the axial direction of the connecting pipe 3. The inner side of the sliding seat 11 is provided with multiple movable grooves 12, and the inner side of each movable groove 12 is adapted to the outer side of the connecting plate 5. When the sliding seat 11 moves, the limiting block 13 fixedly connected at the inner end of the movable groove 12 will interact with the radial groove 14 opened on the outer side of the connecting plate 5. When the sliding seat 11 drives the limiting block 13 to slide along the radial groove 14, it will push the connecting plate 5 to move along the inner side of the positioning groove 4 towards the inside of the connecting pipe 3. Since the ends of each pair of connecting plates 5 are fixedly connected with arc-shaped clamping plates 6, as the connecting plate 5 slides, the multiple arc-shaped clamping plates 6 will gradually move closer to the wire in the connecting pipe 3, and finally clamp the wire tightly from different directions, thereby achieving a firm fixation of the wire.

[0029] In this embodiment, as Figure 3 As shown, one end of each of the two sliding seats 11 is fixedly connected to a limit frame 15 on the outer wall of the connecting pipe 3, and the outer walls of the two limit frames 15 are slidably connected to the inner walls of the two sliding seats 11 respectively.

[0030] A door 16 is hinged to the front port of the instrument box body 1, and two mounting plates 17 are symmetrically fixed to both sides of the instrument box body 1.

[0031] In this embodiment, the setting of the limit frame 15 enhances the stability of the sliding seat 11 during movement, preventing wobbling or deviation when sliding along the outside of the connecting pipe 3, and ensuring the stable and reliable operation of the clamping mechanism.

[0032] The mounting plates 17 provided on both sides of the instrument box body 1 facilitate the secure installation of the entire instrument box in the designated position, thereby enhancing the overall stability of the instrument box during use.

[0033] In this embodiment, as Figure 2 As shown, each of the top ends of the connecting pipe 3 is fixedly connected to a feed end 18, and the port of the feed end 18 is outwardly flared.

[0034] In this embodiment, the feed end 18 at the top of the connecting tube 3 is outwardly flared. This design allows the wire to be guided into the connecting tube 3 more smoothly and conveniently, reducing obstacles during wire threading and avoiding situations where the wire gets stuck or is difficult to align due to the small size of the port during threading.

[0035] In summary, the working principle of this utility model is as follows:

[0036] Before starting the wiring operation, use appropriate installation tools to securely install the instrument box body 1 in the designated position using the mounting plates 17 on both sides of the instrument box body 1. This provides a stable foundation for subsequent wiring work. At this time, the connecting pipe 3, the arc-shaped clamping plate 6, and other components are in their initial state and the wires are not clamped. Pick up the wire to be connected to the instrument box and align it with the feed end 18 at the top of the connecting pipe 3. Because the feed end 18 has an outward flare, this design allows the wire to be guided into the connecting pipe 3 more smoothly and conveniently, reducing obstacles during wire threading and avoiding situations where the wire gets stuck or is difficult to align due to the small size of the port during threading. When the wire is successfully guided into the connecting pipe 3... After reaching the appropriate position, the adjusting disc 8 is rotated, causing it to rotate on the rotating seat 7. The rotating seat 7 supports and positions the adjusting disc 8, ensuring its stable rotation around the axis of the connecting pipe 3. Simultaneously, the rotating disc 8 drives the internally threaded sleeves 9 fixedly connected to both sides to rotate synchronously. Through the threaded engagement with the two externally threaded sleeves 10, the two externally threaded sleeves 10 move relative to each other axially. This axial relative movement of the two externally threaded sleeves 10 simultaneously drives the fixed connecting sliding seats 11 to move synchronously. The sliding seat 11 is slidably connected to the outside of the connecting pipe 3, thus making the connecting pipe 3 act as a guide rail, restricting the movement direction of the sliding seat 11, and allowing it to slide smoothly only along the axial direction of the connecting pipe 3. Multiple movable grooves 12 are formed on the inner side of the sliding seat 11, and the inner sides of each movable groove 12 are adapted to the outer side of the connecting plate 5. Therefore, when the sliding seat 11 moves, the limiting block 13 fixedly connected at the inner end of the movable groove 12 interacts with the radial groove 14 formed on the outer side of the connecting plate 5. As the sliding seat 11 drives the limiting block 13 to slide along the radial groove 14, it pushes the connecting plate 5 along the inner side of the positioning groove 4 towards the interior of the connecting pipe 3. Furthermore, since an arc-shaped clamping plate 6 is fixedly connected between the ends of each pair of connecting plates 5, as the connecting plates 5 slide, multiple arc-shaped clamping plates 6 will gradually move closer to the wires inside the connecting pipe 3, and finally clamp the wires tightly from different directions, thereby achieving a firm fixation of the wires. If maintenance or wire removal operations are required for the wiring inside the instrument box later, simply rotate the adjusting disc 8 in the reverse direction. Following the reverse process of the above working principle, components such as the inner threaded sleeve 9, the outer threaded sleeve 10, and the sliding seat 11 will move in the opposite direction, and the arc-shaped clamping plates 6 will gradually loosen their clamping force on the wires. This allows construction personnel to easily remove the wires from the connecting pipe 3 for corresponding maintenance or replacement operations.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An external wiring device for an electrical instrument box, comprising an instrument box body (1), characterized in that: Multiple fixing plates (2) are fixedly connected to the upper surface of the instrument box body (1), and connecting pipes (3) are fixedly connected to the inner walls of the multiple fixing plates (2). The bottom ends of the connecting pipes (3) extend into the interior of the instrument box body (1). Multiple positioning grooves (4) are symmetrically opened on the outer side of the connecting pipes (3). Connecting plates (5) are slidably connected to the inner side of the multiple positioning grooves (4), and an arc-shaped clamp is fixedly connected between the ends of every two connecting plates (5) extending into the interior of the connecting pipe (3). Plate (6), and a rotating seat (7) is fixedly connected between the ends of the multiple positioning grooves (4) on the outer wall of the connecting pipe (3). An adjusting plate (8) is rotatably connected to the outer side of the rotating seat (7). An internal threaded sleeve (9) is fixedly connected to both sides of the adjusting plate (8). An external threaded sleeve (10) is threadedly connected to the inner side of the two internal threaded sleeves (9). A sliding seat (11) is fixedly connected to the inner side of the external threaded sleeve (10). The sliding seat (11) is slidably connected to the outer side of the connecting pipe (3).

2. The external lead-in wiring device for a power instrument box according to claim 1, characterized in that: The inner side of each sliding seat (11) is provided with multiple movable slots (12), and the inner side of each movable slot (12) is adapted to the outer side of the connecting plate (5). Limiting blocks (13) are fixedly connected to the ports on the inner side of each movable slot (12).

3. The external lead-in wiring device for a power instrument box according to claim 1, characterized in that: The outer side of the connecting plate (5) is provided with radial grooves (14), and the inner side of the radial grooves (14) is adapted to the outer side of the limiting block (13).

4. The external lead-in wiring device for a power instrument box according to claim 2, characterized in that: One end of each of the two sliding seats (11) is fixedly connected to a limit frame (15) on the outer wall of the connecting pipe (3), and the outer walls of the two limit frames (15) are slidably connected to the inner walls of the two sliding seats (11).

5. The external lead-in wiring device for a power instrument box according to claim 1, characterized in that: A door (16) is hinged to the front port of the instrument box body (1), and two mounting plates (17) are symmetrically fixed to both sides of the instrument box body (1).

6. The external lead-in wiring device for a power instrument box according to claim 1, characterized in that: The top end of each of the connecting pipes (3) is fixedly connected to a feed end (18), and the port of the feed end (18) is outwardly flared.

Images