Electricity metering box with terminal protection

Abstract

The utility model relates to electric power metering equipment field discloses the electricity metering box of taking over terminal protection, including the electricity meter box, the electricity meter box inside is provided with electric appliance assembly, the electricity meter box outside hinged has the door, the electricity meter box side wall is provided with the incoming line mouth, the electricity meter box inside fixedly connected with the terminal, the terminal inside detachably connected with the wire, the terminal top is provided with the clamping assembly, the clamping assembly includes fixed clamping plate, movable clamping plate and two fixed screw rods, fixed clamping plate fixedly connected in the electricity meter box, movable clamping plate is detachably connected with fixed clamping plate through two fixed screw rods. In the utility model, the clamping assembly can be stable clamping to the wire that enters the terminal, avoid the wire and appear loose or fall off because of external force pulling, vibration etc., the height limiting block is adjusted along the movable clamping plate through the movement subassembly, need not to dismount and reassemble, adapts to different diameter wire, and the operation is convenient and efficient.

Description

Technical Field

[0001] This utility model relates to the field of power metering equipment, and in particular to a power metering box with terminal protection. Background Technology

[0002] Electricity metering equipment is a crucial link in the power system connecting the public power grid and end users. The electricity meter box, as a core component, plays a vital role in the accurate collection and transmission of electricity data and in ensuring electricity safety. Its operational stability directly affects the accuracy of electricity resource metering and the reliability of user electricity consumption. Inside the electricity meter box, the terminal blocks are the key relay structure for transmitting electrical energy between core metering components such as the electricity meter and instrument transformers and external copper core cables. The quality of the connection between the cables and the terminal blocks is fundamental to ensuring the normal operation of the meter box.

[0003] Currently, existing electricity meter boxes on the market are designed around the realization of electricity metering and basic protection. They generally have wiring terminals inside the box to complete the connection between the wires and electrical components, and use structures such as the box door and basic shell to isolate mosquitoes and moisture from the corrosion of internal components. However, existing meter boxes do not have a special protection design for the long-term stable clamping of wires, and the overall protection mechanism is relatively simple.

[0004] However, the design of existing electricity meter boxes is insufficient to meet the high stability and convenience requirements of practical applications, and has obvious shortcomings. The wiring terminals of existing meter boxes lack effective special clamping and protection components. After the wires are connected to the terminals, they rely solely on the insertion and extraction fixing force of the terminals themselves or simple buckles for limiting. When subjected to external pulling force or environmental vibration, the wires are prone to loosening or even falling off the wiring terminals. This not only leads to the distortion of electricity metering data, but may also cause electrical safety problems such as poor contact and circuit tripping. At the same time, if existing meter boxes need to be adapted to wires of different diameters, it is often necessary to disassemble the wiring terminals or the entire protective structure and readjust and fix them. The operation process is cumbersome and cannot achieve adjustment without disassembly and reassembly. This not only consumes a lot of maintenance time, but may also affect the structural stability of the internal components of the meter box due to repeated disassembly, making it difficult to efficiently adapt to diverse wire specifications. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an energy meter metering box with terminal protection, aiming to solve the problems of the lack of effective clamping protection at the terminals of the existing energy meter metering box and the cumbersome operation when adapting to wires of different diameters.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an electricity meter box with terminal protection, including an electricity box, an electrical component is installed inside the electricity box, a door is hinged to the outside of the electricity box, a wire inlet is opened on the side wall of the electricity box, a terminal is fixedly connected inside the electricity box, a wire is detachably connected inside the terminal, and a clamping component is provided above the terminal; The clamping assembly includes a fixed clamping plate, a movable clamping plate, and two fixing screws. The fixed clamping plate is fixedly connected inside the meter box. The movable clamping plate is detachably connected to the fixed clamping plate through the two fixing screws. The movable clamping plate and the fixed clamping plate are provided with a plurality of clamping holes arranged in a linear array on their respective sides. Height limiting blocks are provided on the left and right sides of the back of the movable clamping plate, and a moving component is provided on the front side of the height limiting blocks.

[0007] As a further description of the above technical solution: The movable component includes a slider and an adjusting screw. The movable clamping plate has grooves on both sides near the fixed clamping plate. The slider is slidably connected inside the grooves. The slider is fixedly connected to the height limiting block. The movable clamping plate has an adjusting screw on its side. The adjusting screw passes through the movable clamping plate and its end is rotatably connected to the slider.

[0008] As a further description of the above technical solution: An elastic plastic pad is fixedly connected to the surface of the clamping hole.

[0009] As a further description of the above technical solution: A retaining ring is fixedly connected to the wiring terminal.

[0010] As a further description of the above technical solution: The height-limiting block is arranged in a triangle.

[0011] As a further description of the above technical solution: There are two fixing screws, symmetrically distributed on the left and right sides of the movable clamp.

[0012] As a further description of the above technical solution: The fixed clamping plate has cut surfaces on both the left and right sides of its back side that are adapted to the height limiting block.

[0013] As a further description of the above technical solution: The clamping hole has a semi-circular cross-section, and the inner wall of the elastic plastic pad is attached to the outer wall of the wire.

[0014] This utility model has the following beneficial effects: 1. In this utility model, by setting wiring terminals inside the meter box and using a clamping assembly consisting of a fixed clamping plate, a movable clamping plate, and a fixed screw, the wires inserted into the wiring terminals can be stably clamped, preventing the wires from loosening or falling off due to external pulling or vibration. The height limit block can be adjusted by sliding along the movable clamping plate through the moving assembly, without the need for disassembly and reassembly, adapting to wires of different diameters, and making the operation convenient and efficient.

[0015] 2. In this utility model, no special tools are needed to adjust the height limit block. The slider can be driven to move along the slide groove by manually rotating the adjusting screw, thereby completing the adjustment of the height limit block position. The operation steps are simple and intuitive, reducing the operation threshold for maintenance personnel and greatly shortening the height limit adaptation time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the energy meter metering box with terminal protection proposed in this utility model; Figure 2 This is a schematic diagram of the terminal block device of the energy meter metering box with terminal block protection proposed in this utility model; Figure 3 This is a schematic diagram of the clamping assembly of the energy meter metering box with terminal protection proposed in this utility model; Figure 4 This is a schematic diagram of the movable clamp and moving component of the energy meter meter box with terminal protection proposed in this utility model. Figure 5 This is a schematic diagram of the movable component of the energy meter metering box with terminal protection proposed in this utility model.

[0017] Legend: 1. Meter box; 2. Electrical components; 3. Box door; 4. Cable inlet; 5. Terminal block; 7. Fixing ring; 8. Wire; 51. Clamping assembly; 52. Height limit block; 510. Fixed clamping plate; 511. Movable clamping plate; 512. Clamping hole; 513. Elastic plastic pad; 514. Fixing screw; 520. Slide groove; 521. Slider; 522. Adjusting screw; 523. Moving assembly. Detailed Implementation

[0018] 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.

[0019] Reference Figures 1-3The present invention provides an embodiment of an energy meter box with terminal protection, comprising an energy meter box 1, an electrical component 2 inside the energy meter box 1, a door 3 hinged to the outside of the energy meter box 1, and a cable inlet 4 on the side wall of the energy meter box 1. The energy meter box 1 is the core load-bearing structure of the meter box, the electrical component 2 is the core working unit of the meter box, and the door 3 is a hinge to prevent insects and moisture from entering the energy meter box 1 and affecting the circuit, while also providing some sound insulation and buffering. The cable inlet 4 is located on the lower inner side of the side wall of the energy meter box 1 and can accommodate copper core cables.

[0020] The meter box 1 has a fixed terminal block 5 inside. A retaining ring 7 is fixedly connected to the terminal block 5. A wire 8 is detachably connected inside the terminal block 5. The terminal block 5 is the transfer hub for power transmission, which can realize the stable connection between the electrical component 2 and the wire 8, avoiding the maintenance difficulties caused by direct welding of the wire 8. The retaining ring 7 is a reinforcement structure for the terminal block. It is fixed to the outside of the terminal block 5 by a buckle or screw. Its function is to initially limit the inserted wire 8, prevent the wire 8 from directly detaching from the terminal block 5 when pulled by external force, and at the same time prevent the terminal block from deforming due to long-term stress.

[0021] A clamping assembly 51 is provided above the terminal block 5. The clamping assembly 51 is the core structure for protecting the terminal block 5. Its main function is to fix the connected wire 8 in a secondary manner to prevent the wire 8 from becoming loose due to vibration or pulling, and to avoid problems such as tripping and metering errors caused by poor contact. The clamping assembly 51 includes a fixed clamping plate 510, a movable clamping plate 511 and two fixing screws 514. The fixed clamping plate 510 is fixedly connected inside the meter box 1 to ensure that the wire 8 is clamped with balanced force.

[0022] Reference Figures 2-4 The movable clamping plate 511 is detachably connected to the fixed clamping plate 510 via two fixing screws 514. The distance between the two plates can be adjusted by rotating the fixing screws 514 clockwise or counterclockwise to accommodate wires 8 of different thicknesses. The detachable connection design makes it easy to remove the movable clamping plate 511 when replacing the wire 8 without having to remove the entire clamping assembly 51, thus improving maintenance efficiency.

[0023] There are two fixing screws 514, symmetrically distributed on the left and right sides of the movable clamping plate 511. Their core function is to ensure that the movable clamping plate 511 is subjected to uniform force, and to prevent the movable clamping plate 511 from tilting due to uneven force when fixed by a single screw, which would cause some wires 8 to be clamped too loosely or too tightly. At the same time, the symmetrical distribution can make the clamping force of the movable clamping plate 511 on the wires 8 be evenly transmitted in the lateral direction, preventing the wires 8 from being damaged by excessive local force. In addition, the double screw structure can also improve the overall stability of the clamping assembly 51.

[0024] On the side of the movable clamping plate 511 and the fixed clamping plate 510 that are close to each other, there are several clamping holes 512 arranged in a straight array. The clamping holes 512 are for holding the wires 8. The number of clamping holes 512 is determined according to the number of wires 8 designed for the meter box 1. The straight array arrangement can achieve one-to-one clamping of the wires 8, avoiding multiple wires 8 from getting tangled or crossing, which facilitates later circuit inspection and reduces the risk of short circuit. An elastic plastic pad 513 is fixedly connected to the surface of the clamping hole 512. Its function is to provide insulation protection and prevent the metal part of the wire 8 from directly contacting the two clamping plates to prevent accidental short circuit. The elastic deformation of the elastic plastic pad 513 increases the friction with the wire 8, preventing the wire 8 from sliding. At the same time, it buffers the impact force when the movable clamping plate 511 clamps the wire, protecting the insulation layer of the wire 8 from being crushed.

[0025] The clamping hole 512 has a semi-circular cross-section, and the inner wall of the elastic plastic pad 513 fits the outer wall of the wire 8. The semi-circular cross-section design of the clamping hole 512 is based on the shape of the circular cross-section of the wire 8, so that the clamping force is applied more evenly to the surface of the wire 8, improving the clamping stability. The inner wall of the elastic plastic pad 513 fits tightly with the outer wall of the wire 8, further enhancing the protective effect. The fit prevents the wire 8 from shaking in the clamping hole 512, avoiding poor contact at the terminal 5 due to long-term shaking. At the same time, the elasticity of the elastic plastic pad 513 can adapt to wires 8 of different diameters, improving the versatility of the clamping component 51, and avoiding loosening of the clamp due to slight differences in the diameter of the wire 8.

[0026] Reference Figures 3-5 Height limiting blocks 52 are provided on both the left and right sides of the back of the movable clamping plate 511. The height limiting blocks 52 are protective limiters for the clamping assembly 51. They are fixed to the back of the movable clamping plate 511, close to the fixed clamping plate 510, to limit the maximum downward pressure distance of the movable clamping plate 511. This prevents the movable clamping plate 511 from excessively squeezing the wire 8 due to the fixing screw 514 being tightened too much, thus avoiding short circuits caused by the insulation layer of the wire 8 being crushed or the metal core of the wire 8 being damaged, which would affect its conductivity. The height limiting blocks 52 are triangular in shape. The triangular structure design of the height limiting blocks 52 has higher stability, and the apex faces the fixed clamping plate 510. The minimum distance between the two plates can be adjusted by its own height, which is suitable for most wire 8 specifications.

[0027] A movable component 523 is provided on the front side of the height limit block 52. The movable component 523 is the position adjustment unit of the height limit block 52. Its core function is to flexibly adjust the position of the height limit block 52 according to the changes in the diameter of the wire 8 and the thickness of the elastic plastic pad 513. The movable component 523 includes a slider 521 and an adjusting screw 522. The slider 521 is the load-bearing component of the height limit block 52 and can drive the height limit block 52 to move smoothly. The adjusting screw 522 is a manual adjustment component. By rotating the adjusting screw 522, the slider 521 can be driven to move without the need for complicated tools, which is convenient for on-site maintenance personnel to operate.

[0028] The movable clamping plate 511 has two sliding grooves 520 on its side near the fixed clamping plate 510. The sliding grooves 520 are guide rails for the slider 521 and are located at the edge of the movable clamping plate 511. The length of the sliding grooves 520 is designed according to the adjustment range of the height limiting block 52. This can limit the movement of the slider 521 and prevent over-adjustment. The slider 521 is slidably connected inside the sliding grooves 520, allowing the height limiting block 52 to move in a fixed direction. The slider 521 is fixedly connected to the height limiting block 52 to ensure that the two move synchronously, preventing the height limiting block 52 from falling off during use and improving the reliability of the structure.

[0029] An adjusting screw 522 is provided on the side of the movable clamping plate 511. The adjusting screw 522 passes through the movable clamping plate 511, and the end of the adjusting screw 522 is rotatably connected to the slider 521. The rotatable connection between the end of the adjusting screw 522 and the slider 521 can prevent the slider 521 from rotating synchronously when the adjusting screw 522 rotates. That is, when the adjusting screw 522 rotates clockwise, it will only push the slider 521 towards the fixed clamping plate 510 through the thread thrust. When it rotates counterclockwise, the slider 521 moves in the opposite direction. The distance between the movable clamping plate 511 and the fixed clamping plate 510 is controlled by adjusting the position of the height limiting block 52, ensuring that the clamping component 51 is always adapted to the specifications of the wire 8, playing a stable protective role and avoiding over-clamping of the wire 8.

[0030] Working principle: First, complete the basic assembly of the meter box 1, fix the electrical components 2 inside the meter box 1, and then install the box door 3 on the outside of the meter box 1 through the hinge. Then, insert the copper core cable into the box through the inlet 4 opened on the lower inner side of the side wall of the meter box 1 to prepare for subsequent circuit connection.

[0031] After the copper core cable 8 is inserted, the cable 8 is detachably connected to the fixed terminal 5 inside the meter box 1. At this time, the fixing ring 7 at the terminal 5 is fixed by a buckle or screw to initially limit the inserted cable 8, preventing the cable 8 from being pulled directly out of the terminal 5 by external force, and at the same time avoiding deformation of the terminal due to long-term stress.

[0032] For the wire 8 connected to the terminal 5, a secondary fixation is performed using the clamping assembly 51 above it. It is confirmed that the fixed clamping plate 510 is fixed inside the meter box 1. The two fixing screws 514 symmetrically distributed on the left and right sides of the movable clamping plate 511 are rotated clockwise or counterclockwise to adjust the distance between the movable clamping plate 511 and the fixed clamping plate 510 to fit the thickness of the wire 8. The wire 8 is then inserted into the linear array clamping holes 512 on the side of the movable clamping plate 511 and the fixed clamping plate 510 that are close to each other. At this time, the elastic plastic pads 513 on the surface of the clamping holes 512 adhere to the outer wall of the wire 8, completing the stable fixation and preventing the wire 8 from becoming loose due to vibration or pulling.

[0033] Based on the diameter of the wire 8 and the thickness of the elastic plastic pad 513, adjust the height limiting block 52 on the back of the movable clamp 511. With the help of the moving component 523 on the front side of the height limiting block 52, rotate the adjusting screw 522 on the side of the movable clamp 511 to drive the slider 521 to slide along the groove 520 opened on the edge of the movable clamp 511. This causes the height limiting block 52, which is fixedly connected to the slider 521, to move synchronously until the height limiting block 52 can limit the maximum downward pressure distance of the movable clamp 511. This prevents the fixed screw 514 from being tightened too much, which would cause the movable clamp 511 to excessively squeeze the wire 8 and prevent damage to the insulation layer or metal core of the wire 8.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An energy meter box with terminal protection, comprising a meter box (1), characterized in that: The meter box (1) is equipped with an electrical component (2) inside. The meter box (1) is hinged with a door (3) on the outside. The meter box (1) has a wire inlet (4) on the side wall. The meter box (1) is fixedly connected with a terminal block (5). The terminal block (5) is detachably connected with a wire (8). A clamping component (51) is provided above the terminal block (5). The clamping assembly (51) includes a fixed clamping plate (510), a movable clamping plate (511), and two fixing screws (514). The fixed clamping plate (510) is fixedly connected inside the meter box (1). The movable clamping plate (511) is detachably connected to the fixed clamping plate (510) through the two fixing screws (514). The movable clamping plate (511) and the fixed clamping plate (510) are provided with a number of clamping holes (512) arranged in a linear array on the side close to each other. The movable clamping plate (511) is provided with height limiting blocks (52) on the left and right sides of the back side. The height limiting block (52) is provided with a moving component (523) on the front side of the height limiting block (52).

2. The energy meter box with terminal protection according to claim 1, characterized in that: The moving component (523) includes a slider (521) and an adjusting screw (522). The movable clamping plate (511) has grooves (520) on both sides near the fixed clamping plate (510). The slider (521) is slidably connected inside the groove (520). The slider (521) is fixedly connected to the height limiting block (52). The adjusting screw (522) is provided on the side of the movable clamping plate (511). The adjusting screw (522) passes through the movable clamping plate (511), and the end of the adjusting screw (522) is rotatably connected to the slider (521).

3. The energy meter metering box with terminal protection according to claim 1, characterized in that: An elastic plastic pad (513) is fixedly connected to the surface of the clamping hole (512).

4. The energy meter metering box with terminal protection according to claim 1, characterized in that: A fixing ring (7) is fixedly connected to the wiring terminal (5) at the wiring port.

5. The energy meter metering box with terminal protection according to claim 1, characterized in that: The height limiting block (52) is set in a triangle.

6. The energy meter metering box with terminal protection according to claim 1, characterized in that: There are two fixing screws (514), which are symmetrically distributed on the left and right sides of the movable clamp (511).

7. The energy meter box with terminal protection according to claim 1, characterized in that: The fixed clamping plate (510) has cut surfaces on both the left and right sides of its back side that are adapted to the height limiting block (52).

8. The energy meter box with terminal protection according to claim 1, characterized in that: The clamping hole (512) has a semi-circular cross-section, and the inner wall of the elastic plastic pad (513) is attached to the outer wall of the wire (8).

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