High and low voltage mixed electric energy meter

Abstract

The utility model relates to the technical field of electric energy meters, and discloses a high and low voltage mixed electric energy meter comprising an electric energy meter main body, the top of the electric energy meter main body is provided with a plurality of installation grooves, second joints are fixed in the installation grooves through bolts, and one side of the electric energy meter main body is fixedly provided with first joints through bolts. The top of the second connector is provided with a threaded hole, the threaded hole is internally in threaded connection with a screw, the bottom of the screw is rotatably connected with a pressing block through a rotating shaft, and one side of the second connector is provided with an installation hole used for installing an electric wire. The top of the protrusion is in a sawtooth shape, the pressing block moves downwards to extrude the electric wire to move downwards, the electric wire is clamped into the notch, and therefore the electric wire is fixed, the electric wire is not prone to being dragged out, the limiting mechanism is used for guiding the electric wire, and the fixing stability of the electric energy meter is improved.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, and more specifically to a high- and low-voltage mixed-use electricity meter. Background Technology

[0002] An electricity meter is an instrument used to measure electrical energy. A three-phase four-wire electricity meter can achieve two different voltage connections: 220V and 380V. 220V is the phase voltage, which is suitable for single-phase equipment, such as household appliances. 380V is the line voltage, which is suitable for three-phase equipment, such as industrial motors.

[0003] A search revealed Chinese patent CN207318556U, which discloses a terminal box assembly for a three-phase energy meter. This assembly can be completed by automated machinery without manual operation, thus improving the overall quality of the energy meter. However, the wiring terminals are tightened using conventional bolts. The contact point between the bolt surface and the wire is a line rather than a plane, making it easy for the wire to fall off, resulting in poor wire fixation. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high- and low-voltage mixed-use energy meter to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a high- and low-voltage mixed-use energy meter, including an energy meter body. The top of the energy meter body has multiple mounting slots, and a second connector is fixed to each mounting slot by bolts. A first connector is fixed to one side of the energy meter body by bolts. The top of the second connector has a threaded hole, and a screw is threaded into the threaded hole. A pressure block is rotatably connected to the bottom of the screw via a rotating shaft. One side of the second connector has a mounting hole for installing an electrical wire. A protrusion is adhered to the mounting hole below the pressure block, and the top of the protrusion has multiple notches. The bottom of the second connector has two clearance slots, and both ends of the pressure block are located within the two clearance slots respectively. A limiting mechanism for positioning the electrical wire is provided on one side of the energy meter body.

[0006] As a further embodiment of this utility model, the limiting mechanism includes a pressure cover fixed to the top of the main body of the electricity meter by bolts, a pressure plate integrally formed at the bottom of the pressure cover, and multiple slots opened at the bottom of the pressure plate. The top of the main body of the electricity meter is provided with a locking mechanism for secondary fixing of the wires.

[0007] As a further embodiment of this utility model, the locking mechanism includes a first support plate and a second support plate fixed to the top of the main body of the electricity meter. The top of the first support plate and the second support plate are both provided with grooves. A fixing plate is welded to the top between the inner walls on both sides of the groove on the first support plate. An elastic plate is glued to the bottom of the fixing plate. Multiple L-shaped plates are fixed to one side of the inner wall of the cover by bolts.

[0008] As a further embodiment of this utility model, an auxiliary head is welded to one end of the elastic plate, and the auxiliary head is in contact with the L-shaped plate.

[0009] As a further embodiment of this utility model, the bent elastic plate is located between the first support plate and the second support plate, and the height of the bent elastic plate below the fixed plate does not exceed the depth of the groove.

[0010] As a further embodiment of this invention, the elastic plate is a titanium alloy plate.

[0011] As a further embodiment of this invention, the elastic plate is a magnesium alloy plate.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model uses the combination of protrusions and notches. The top of the protrusion has multiple notches, making the top of the protrusion serrated. The pressure block moves downward, squeezing the wire downward and causing the wire to be inserted into the notch, thereby fixing the wire and making it difficult for the wire to be pulled out. The limiting mechanism guides the wire, improving the stability of the electricity meter fixing.

[0014] 2. This utility model has a limiting mechanism that allows the wire to be inserted into the slot, thus arranging the wire and preventing misalignment. This helps to prevent short circuits caused by aging wires and improves the protection effect of the electricity meter.

[0015] 3. This utility model has a locking mechanism, which causes the L-shaped plate to compress and deform the elastic plate, thereby compressing the wire and further fixing the wire, thus improving the fixing stability of the electricity meter wire. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is an exploded structural diagram of the present invention.

[0018] Figure 3 For the present utility model Figure 2 A magnified structural diagram of part A.

[0019] Figure 4This is a cross-sectional view of the second connector of this utility model.

[0020] The attached diagram is labeled as follows: 1. Electricity meter body; 2. Cover; 3. First connector; 4. Pressure plate; 5. Slot; 6. L-shaped plate; 7. First support plate; 8. Second support plate; 9. Mounting slot; 10. Second connector; 11. Fixing plate; 12. Elastic plate; 13. Auxiliary head; 14. Screw; 15. Pressure block; 16. Alternating groove; 17. Protrusion; 18. Notch; 19. Threaded hole. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Reference Figures 1-4 This utility model provides a high- and low-voltage mixed-use energy meter, including an energy meter body 1. Multiple mounting slots 9 are formed on the top of the energy meter body 1. Second connectors 10 are fixed to the mounting slots 9 by bolts. A first connector 3 is fixed to one side of the energy meter body 1 by bolts. The first connector 3 is used for single-phase load connection, and the first connector 3 cooperates with the second connector 10 for three-phase load connection, thereby achieving high- and low-voltage selection. A threaded hole 19 is formed on the top of the second connector 10, and a screw 14 is threaded into the threaded hole 19. A pressure block 15 is rotatably connected to the bottom of the screw 14 via a rotating shaft. An installation hole for installing wires is formed on one side of the second connector 10, and a protrusion 17 is adhered to the installation hole below the pressure block 15. The top of the protrusion 17 has multiple notches 18, making the top of the protrusion 17 serrated. The bottom of the second connector 10 has two clearance grooves 16, and the two ends of the pressure block 15 are respectively located in the two clearance grooves 16. A limiting mechanism for positioning the wire is provided on one side of the main body 1 of the electricity meter. In use, the wire is inserted into the mounting hole so that the wire contacts the protrusion 17. Then, the screw 14 is turned. Under the action of the thread, the screw 14 moves downward, thereby causing the pressure block 15 to move downward. The pressure block 15 then squeezes the wire downward. Under the action of the notches 18, the wire is stuck into the notches 18, thereby completing the fixation of the wire and making it difficult for the wire to be pulled out. The limiting mechanism guides the wire, improving the stability of the electricity meter fixation.

[0023] In this utility model, the limiting mechanism includes a pressure cover 2 fixed to the top of the main body 1 of the energy meter by bolts. The bottom of the pressure cover 2 is integrally formed with a pressure plate 4. The bottom of the pressure plate 4 is provided with multiple slots 5. A rubber ring with the same arc shape as the slot 5 is inserted into the slot 5 to increase the friction between the wire and the slot 5. The top of the main body 1 of the energy meter is provided with a locking mechanism for secondary fixing of the wire. After the wire is fixed by the second connector 10, the pressure cover 2 is installed on the main body 1 of the energy meter and the wire is inserted into the slot 5 to arrange the wire and prevent the wire from being misaligned, thereby preventing the short circuit caused by the aging of the wire and improving the protection effect of the energy meter.

[0024] The locking mechanism includes a first support plate 7 and a second support plate 8 fixed to the top of the main body 1 of the electricity meter. Both the first support plate 7 and the second support plate 8 have grooves on their tops. A fixing plate 11 is welded to the top of the groove on the first support plate 7 between the inner walls on both sides. An elastic plate 12 is adhered to the bottom of the fixing plate 11. The elastic plate 12 is made of an elastic metal material, preferably titanium alloy or magnesium alloy. When the pressure cover 2 is not installed, one end of the elastic plate 12 is in a slightly upward-curved position. Multiple L-shaped plates 6 are fixed to one inner wall of the pressure cover 2 by bolts. An auxiliary head 13 is welded to one end of the elastic plate 12, and the auxiliary head 13 contacts the L-shaped plate 6, increasing the locking effect. The contact area between the elastic plate 12 and the L-shaped plate 6 makes the elastic plate 12 easier to deform. When the wire is installed, the wire is passed through the groove. When the cover 2 is installed, the L-shaped plate 6 will squeeze the elastic plate 12 to deform, so that the deformed elastic plate 12 squeezes the wire. The bent elastic plate 12 is located between the first support plate 7 and the second support plate 8, and the height of the bent elastic plate 12 below the fixed plate 11 does not exceed the depth of the groove, so that the deformation of the elastic plate 12 is small and will not reach the elastic yield limit of the elastic plate 12, thus protecting the elastic plate 12 and further fixing the wire, thereby further improving the fixing stability of the electricity meter wire.

[0025] The working principle of this utility model is as follows: In use, the wire is passed through the groove and inserted into the mounting hole, so that the wire contacts the protrusion 17. Then, the screw 14 is rotated. Under the action of the thread, the screw 14 moves downward, thereby causing the pressure block 15 to move downward. The pressure block 15 then squeezes the wire downward. Under the action of the notch 18, the wire is inserted into the notch 18, thus completing the fixation of the wire and making it difficult for the wire to be pulled out. The pressure cover 2 is installed on the main body 1 of the electricity meter. The L-shaped plate 6 will squeeze the elastic plate 12 to deform, thereby causing the deformed elastic plate 12 to squeeze the wire, further fixing the wire and improving the stability of the wire fixation. At the same time, the wire is inserted into the slot 5, which arranges the wire and avoids wire misalignment, thereby preventing short circuits caused by wire aging.

[0026] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0027] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0028] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A high- and low-voltage mixed-use energy meter, comprising an energy meter body (1), wherein a plurality of mounting slots (9) are provided on the top of the energy meter body (1), a second connector (10) is fixedly connected in the mounting slots (9), and a first connector (3) is fixedly connected to one side of the energy meter body (1), characterized in that: The second connector (10) has a threaded hole (19) at the top, and a screw (14) is threaded into the threaded hole (19). The bottom of the screw (14) is rotatably connected to a pressure block (15) via a rotating shaft. The second connector (10) has an installation hole for installing wires on one side. A protrusion (17) is glued to the installation hole below the pressure block (15). The top of the protrusion (17) has multiple notches (18). The bottom of the second connector (10) has two clearance grooves (16), and the two ends of the pressure block (15) are respectively located in the two clearance grooves (16). The main body (1) of the electricity meter has a limiting mechanism for positioning the wire on one side.

2. A high- and low-voltage mixed-use energy meter according to claim 1, characterized in that: The limiting mechanism includes a pressure cover (2) fixedly connected to the top of the main body (1) of the electricity meter. The bottom of the pressure cover (2) is integrally formed with a pressure plate (4). The bottom of the pressure plate (4) is provided with multiple slots (5). The top of the main body (1) of the electricity meter is provided with a locking mechanism for secondary fixing of the wire.

3. A high- and low-voltage mixed-use energy meter according to claim 2, characterized in that: The locking mechanism includes a first support plate (7) and a second support plate (8) fixed to the top of the main body (1) of the electricity meter. The top of the first support plate (7) and the second support plate (8) are both provided with grooves. A fixing plate (11) is fixedly connected between the inner walls on both sides of the groove on the first support plate (7). An elastic plate (12) is glued to the bottom of the fixing plate (11). A plurality of L-shaped plates (6) are fixedly connected to one side of the inner wall of the cover (2).

4. A high- and low-voltage mixed-use energy meter according to claim 3, characterized in that: An auxiliary head (13) is fixedly connected to one end of the elastic plate (12), and the auxiliary head (13) is in contact with the L-shaped plate (6).

5. A high- and low-voltage mixed-use energy meter according to claim 3, characterized in that: The bent elastic plate (12) is located between the first support plate (7) and the second support plate (8), and the height of the bent elastic plate (12) below the fixed plate (11) does not exceed the depth of the groove.

6. A high- and low-voltage mixed-use energy meter according to claim 3, characterized in that: The elastic plate (12) is a titanium alloy plate.

7. A high- and low-voltage mixed-use energy meter according to claim 3, characterized in that: The elastic plate (12) is a magnesium alloy plate.

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