Three-phase charge-control intelligent electric energy meter

Abstract

The utility model discloses a three-phase charge-control intelligent electric energy meter which is convenient to check and is safer. According to the technical scheme, the wiring terminal comprises a shell, a PCB installed in the shell, a shell cover installed at the upper end of the shell and a turning cover installed at the lower end of the shell cover, a wiring terminal base is arranged at the lower end of the shell, and a set of wiring terminals and wiring screws connected with the wiring terminals are arranged in the wiring terminal base. The wiring terminal seat is characterized in that a sliding groove is arranged between the corresponding adjacent binding posts of the wiring terminal seat, a sliding short-circuit piece, a first verification screw, a second verification screw and a verification terminal are arranged in the sliding groove, the verification terminal is embedded in a verification terminal mounting groove in the sliding groove, the binding posts are provided with first screw holes and second screw holes, and the first screw holes and the second screw holes are communicated with the sliding short-circuit piece. The lower end of the first verification screw is in threaded connection with the verification terminal, the lower end of the second verification screw is in threaded connection with the second screw hole in the binding post, and the wiring screw is in threaded connection with the first screw hole in the binding post.

Description

Technical Field

[0001] The utility model relates to an electric energy meter. Background Art

[0002] The three-phase fee-controlled smart meter is a new generation of network remote fee-controlled smart energy meter specially designed based on an embedded software and hardware development platform using large-scale integrated circuits. The structure includes: a shell, a PCB board installed in the shell, a shell cover installed at the upper end of the shell, and a flip cover installed at the lower end of the shell cover. The lower end of the shell is provided with a terminal block, and a group of terminals and terminal screws connected to the terminals are provided in the terminal block. The energy meter needs to be calibrated before leaving the factory. The calibration requires disassembly of the meter shell, connection of the internal calibration terminal, and disconnection from the inside after the calibration is completed, which is inconvenient to operate. In addition, the flip cover of the traditional three-phase fee-controlled smart meter is easy to be disassembled, and there is no positioning function, so the safety is poor. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a three-phase fee-controlled intelligent electric energy meter which is easy to calibrate and safer.

[0004] To solve the above problems, the technical solution adopted by the utility model includes: a shell, a PCB board installed in the shell, a shell cover installed at the upper end of the shell and a flip cover installed at the lower end of the shell cover, the lower end of the shell is provided with a terminal block, the terminal block is provided with a group of terminals and terminal screws connected to the terminals, and the characteristic is that: a sliding groove is provided between the adjacent terminals corresponding to the terminal block, the sliding groove is provided with a sliding short-circuit piece, a first verification screw, a second verification screw and a verification terminal, the verification terminal is embedded in the verification terminal installation groove in the sliding groove, the terminal is provided with a first screw hole and a second screw hole, the lower end of the first verification screw is screwed with the verification terminal, the lower end of the second verification screw is screwed with the second screw hole on the terminal, the terminal screw is screwed with the first screw hole on the terminal, and the sliding short-circuit piece is provided with a long hole connected with the first verification screw and a U-shaped opening matched with the second verification screw on / off.

[0005] The three-phase fee-controlled intelligent energy meter is characterized in that a riveted portion is provided at the front end of the verification terminal.

[0006] The three-phase fee-controlled intelligent energy meter is characterized in that the end of the sliding short-circuit piece is bent to form a dial button.

[0007] The three-phase fee-controlled intelligent energy meter is characterized in that the upper end of the verification terminal is exposed to the slide slot and is in contact with the sliding short-circuit piece.

[0008] The three-phase fee-controlled intelligent energy meter is characterized in that a square screw hole seat is provided at the upper end of the terminal, and the first screw hole and the second screw hole are arranged on the square screw hole seat.

[0009] The three-phase fee-controlled intelligent energy meter is characterized in that a flat copper busbar connection portion is provided at the front end of the terminal post, and a third screw hole is provided on the copper busbar connection portion.

[0010] The three-phase fee-controlled intelligent energy meter is characterized in that positioning protrusions are provided on both sides of the lower end of the shell, a positioning groove is provided on the flip cover to cooperate with the positioning protrusion, and a lead sealing hole is provided between the flip cover and the positioning protrusion.

[0011] The three-phase fee-controlled intelligent energy meter is characterized in that the flip cover is rotatably connected to the shaft hole on the shell cover through a rotating shaft, and the flip cover is provided with a positioning protrusion next to its rotating shaft, and the shell cover is provided with positioning pits corresponding to the positioning protrusions on both sides of its shaft hole.

[0012] The advantages of the three-phase fee-controlled intelligent electricity meter of the utility model are as follows: 1. The internal inspection circuit can be connected and disconnected by sliding the short-circuit piece outside the shell, and there is no need to disassemble the shell for inspection, making the inspection more convenient; 2. The flip cover has positioning and lead sealing functions, which makes the operation safer and has anti-electricity theft function. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0014] Figure 1 It is a structural diagram of the utility model three-phase fee-controlled intelligent electric energy;

[0015] Figure 2 It is an exploded diagram of the three-phase fee-controlled intelligent electric energy of the utility model;

[0016] Figure 3 It is an assembly diagram between the terminal block of the utility model, the terminal assembly, and the detection terminal assembly (composed of a sliding shorting piece, a first calibration screw, a second calibration screw, and a calibration terminal);

[0017] Figure 4 It is a structural schematic diagram of the utility model terminal;

[0018] Figure 5 It is a structural schematic diagram of the verification terminal of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the sliding shorting piece of the utility model;

[0020] Figure 7 It is a structural schematic diagram of the utility model terminal block;

[0021] Figure 8 It is a structural schematic diagram of the shell cover and the flip cover of the utility model. DETAILED DESCRIPTION

[0022] like Figures 1 to 8 As shown, the three-phase fee-controlled intelligent energy meter of the utility model comprises a housing 1, a PCB board 2 installed in the housing 1, a housing cover 3 installed at the upper end of the housing 1, and a flip cover 4 installed at the lower end of the housing cover 3. The lower end of the housing 1 is provided with a terminal block 5 and fixed by a hook. The terminal block 5 is provided with a group of terminals 6 and terminal screws 7 connected to the terminals 6, and each terminal 6 is provided with two terminal screws 7. The terminal block 5 is provided with a slide groove 8 between the adjacent terminals 6, and the slide groove 8 is provided with a sliding shorting piece 9, a first calibration screw 10, a second calibration screw 11 and a calibration terminal 12. The calibration terminal 12 is embedded in the calibration terminal installation groove 13 in the slide groove 8, and the terminal 6 is provided with a first screw hole 14 and a second screw hole 15. The lower end of the first calibration screw 10 is screwed with the calibration terminal 12, and the lower end of the second calibration screw 11 is screwed with the second screw hole 15 on the terminal 6. The front end of the calibration terminal 12 is connected to the PCB board 2 through a wire. The binding screw 7 is screwed to the first screw hole 14 on the binding post 6. The sliding shorting piece 9 is provided with a long hole 16 connected to the first verification screw 10 and a U-shaped opening 17 for on / off matching with the second verification screw 11. When verifying, the sliding shorting piece 9 is slid toward the second verification screw 11 to connect with it; when the inspection is completed, the sliding shorting piece 9 is slid to the other side to disconnect from the second verification screw 11.

[0023] Preferably, a riveted portion 18 is provided at the front end of the verification terminal 12, and the wire is riveted onto the riveted portion 18 and connected to the verification terminal 12 to facilitate wiring.

[0024] Preferably, the end of the sliding shorting piece 9 is bent to form a dial button 19 to facilitate the user to slide the sliding shorting piece 9.

[0025] Preferably, the upper end of the verification terminal 12 is exposed to the slide groove 8 and contacts the sliding shorting piece 9 to ensure the connection between the verification terminal 12 and the sliding shorting piece 9 .

[0026] Preferably, a square screw hole seat 20 is provided at the upper end of the terminal post 6, and the first screw hole 14 and the second screw hole 15 are provided on the square screw hole seat 20. The square screw hole seat 20 can prevent the terminal post 6 from rotating on the terminal seat 5.

[0027] Preferably, a flat copper busbar connection part 21 is provided at the front end of the terminal post 6, and a third screw hole 22 is provided on the copper busbar connection part 21. The electric wire busbar of the electric meter is connected to the copper busbar connection part 21 to facilitate wiring.

[0028] Preferably, positioning protrusions 23 are provided on both sides of the lower end of the housing 1, positioning grooves 24 are provided on the flip cover 4 to be positioned and matched with the positioning protrusions 23, and a lead seal hole 25 is provided between the flip cover 4 and the positioning protrusions 23. The positioning and matching of the positioning protrusions 23 and the positioning grooves 24 make the flip cover 4 more stable after closing, and a lead seal is installed in the lead seal hole 25 to prevent electricity theft.

[0029] Preferably, the flip cover 4 is rotatably connected to the shaft hole 27 on the shell cover 3 via a rotating shaft 26, and a positioning convex point 28 is provided on the flip cover 4 corresponding to the rotating shaft 26, and a positioning concave pit 29 is provided on both sides of the shell cover 3 corresponding to the shaft hole 27, which is adapted to the positioning convex point 28. When the flip cover 4 is opened, the positioning convex point 28 is embedded in the positioning concave pit 29 at the upper end to position the flip cover 4, so as to facilitate user wiring; when the flip cover 4 is closed, the positioning convex point 28 is embedded in the positioning concave pit 29 at the lower end to position the flip cover 4, so as to make the cover more stable.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A three-phase fee-controlled intelligent energy meter, comprising a housing (1), a PCB board (2) installed in the housing (1), a housing cover (3) installed at the upper end of the housing (1), and a flip cover (4) installed at the lower end of the housing cover (3), wherein a terminal block (5) is provided at the lower end of the housing (1), and a group of terminal blocks (6) and terminal screws (7) connected to the terminal blocks (6) are provided in the terminal block (5), characterized in that: The terminal block (5) is provided with a slide groove (8) between the adjacent connecting posts (6), and the slide groove (8) is provided with a sliding shorting piece (9), a first calibration screw (10), a second calibration screw (11) and a calibration terminal (12). The calibration terminal (12) is embedded in a calibration terminal mounting groove (13) in the slide groove (8). The connecting post (6) is provided with a first screw hole (14) and a second screw hole (15). The lower end of the first calibration screw (10) is screwed to the calibration terminal (12), and the lower end of the second calibration screw (11) is screwed to the second screw hole (15) on the connecting post (6). The connecting screw (7) is screwed to the first screw hole (14) on the connecting post (6). The sliding shorting piece (9) is provided with a long hole (16) connected to the first calibration screw (10) and a U-shaped opening (17) matched with the second calibration screw (11) for on / off.

2. The three-phase fee-controlled smart energy meter according to claim 1 is characterized in that: The front end of the verification terminal (12) is provided with a riveting portion (18).

3. The three-phase fee-controlled smart energy meter according to claim 1 is characterized in that: The end of the sliding shorting piece (9) is bent to form a dial button (19).

4. The three-phase fee-controlled smart energy meter according to claim 1 is characterized in that: The upper end of the verification terminal (12) is exposed to the sliding groove (8) and is in contact with the sliding shorting piece (9).

5. The three-phase fee-controlled smart energy meter according to claim 1 is characterized in that: A square screw hole seat (20) is provided at the upper end of the terminal post (6), and the first screw hole (14) and the second screw hole (15) are arranged on the square screw hole seat (20).

6. The three-phase fee-controlled smart energy meter according to claim 5 is characterized in that: A flat copper busbar connection portion (21) is provided at the front end of the connection post (6), and a third screw hole (22) is provided on the copper busbar connection portion (21).

7. The three-phase fee-controlled smart energy meter according to claim 1 is characterized in that: Positioning protrusions (23) are provided on both sides of the lower end of the housing (1), a positioning groove (24) is provided on the flip cover (4) and is positioned to cooperate with the positioning protrusions (23), and a lead sealing hole (25) is provided between the flip cover (4) and the positioning protrusions (23).

8. The three-phase fee-controlled smart energy meter according to claim 1 is characterized in that: The flip cover (4) is rotatably connected to the shaft hole (27) on the shell cover (3) via a rotating shaft (26), and the flip cover (4) is provided with a positioning protrusion (28) next to the rotating shaft (26), and the shell cover (3) is provided with a positioning pit (29) corresponding to the positioning protrusion (28) on both sides of the shaft hole (27).

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