Three-phase ammeter wiring terminal and ammeter

Abstract

The utility model discloses a three-phase ammeter wiring terminal which is simple in operation and good in stability, and an ammeter. According to the technical scheme, the three-phase wiring terminal assembly comprises a terminal base and three-phase wiring terminal assemblies arranged in the terminal base, each phase of wiring terminal assembly comprises a wiring frame, a wiring screw connected to the upper end of the wiring frame and a U-shaped wiring bar, the end of the U-shaped wiring bar is inserted into the wiring frame, and a three-phase detection base is integrally formed on the back face of the terminal base. The upper end of each phase of detection seat is provided with a detection sheet, one end connected with the detection sheet is provided with a fixed screw, the middle is connected with a first detection screw, and the other end of the detection sheet is connected with a second detection screw.

Description

Technical Field

[0001] The utility model belongs to the field of electric meters, and particularly relates to a three-phase electric meter. Background Art

[0002] To facilitate the calibration of three-phase four-wire rail-type electric meter cases by manufacturers and users, the structure of the traditional rail-type electric meter case with a detection terminal assembly is shown in the Chinese utility model patent with the authorization announcement number of "CN203798857U" and the name of "A Rail-type Electric Energy Meter Case and an Electric Energy Meter". Its detection terminal assembly includes: a first fastener, a second fastener, and a conductive sheet. The first fastener passes through the current wire connection hole and corresponds to the connection terminal. The second fastener passes through the voltage wire connection hole and is used for electrically connecting with the voltage wire. The conductive sheet is installed on the wire terminal seat through the first fastener or the second fastener. Through holes corresponding to the current wire connection hole and the voltage wire connection hole are provided on the top cover. The conductive sheet is slidably arranged in the through hole, and the first fastener and the second fastener are electrically connected or disconnected through the sliding of the conductive sheet. During detection, it is necessary to first loosen the first fastener and the second fastener, then slide the conductive sheet, and finally tighten the first fastener and the second fastener. This not only makes the operation troublesome but also has poor stability of the detection terminal assembly. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a three-phase electric meter connection terminal and an electric meter with simple operation and good stability.

[0004] To solve the above problems, the technical solutions adopted by the utility model include: a terminal seat and a three-phase connection terminal assembly arranged in the terminal seat. Each phase of the connection terminal assembly includes a connection frame, a connection screw rod connected to the upper end of the connection frame, and a U-shaped connection row with its end inserted into the connection frame. It is characterized in that: a three-phase detection seat is integrally formed on the back of the terminal seat. A detection sheet is provided at the upper end of each phase of the detection seat. A fixed screw rod is connected to one end of the detection sheet. A first detection screw rod is connected to the middle. A second detection screw rod is connected to the other end of the detection sheet. The lower end of the first detection screw rod is connected to a detection terminal inserted on the detection seat. The lower end of the second detection screw rod is connected to the U-shaped connection row, and the screw hole on this side of the detection sheet is larger than the outer diameter of the second detection screw rod.

[0005] The three-phase electric meter connection terminal is characterized in that: positioning ribs for positioning the detection sheet are provided on the detection seat.

[0006] The three-phase electric meter connection terminal is characterized in that: positioning columns for positioning the detection sheet are provided on the detection seat.

[0007] The three-phase electric meter connection terminal is characterized in that: a detection wire is connected to the detection terminal.

[0008] The described three-phase electricity meter connection terminal is characterized in that: a screw bushing extending to the U-shaped connection row is provided on the detection base.

[0009] The described three-phase electricity meter connection terminal is characterized in that: an ear hole plate is formed at one end of the detection piece by bending.

[0010] The described three-phase electricity meter connection terminal is characterized in that: a current transformer is sleeved on the U-shaped connection row.

[0011] An electricity meter, including a meter housing, is characterized in that: the three-phase electricity meter connection terminal described in any one of the above is installed inside the meter housing.

[0012] The advantages of the three-phase electricity meter connection terminal and the electricity meter of the present utility model: Only by turning the second detection screw with a screwdriver can it be quickly connected or disconnected from the U-shaped connection row, and then the connection or disconnection of the detection wire can be realized. The operation is simpler, the structure is simpler, and the performance is more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following further describes the present utility model in detail in conjunction with the drawings and specific embodiments.

[0014] Figure 1 is a front structural schematic diagram of the three-phase electricity meter connection terminal of the present utility model;

[0015] Figure 2 is a back structural schematic diagram of the three-phase electricity meter connection terminal of the present utility model;

[0016] Figure 3 is a cross-sectional view of the three-phase electricity meter connection terminal of the present utility model;

[0017] Figure 4 is an exploded view of the three-phase electricity meter connection terminal of the present utility model;

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

[0019] Figure 6 is a structural schematic diagram of the detection piece of the present utility model;

[0020] Figure 7 is a structural schematic diagram of the electricity meter of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS Example 1:

[0021] As Figures 1 to 6As shown in the figure, the three-phase electricity meter terminal of the present utility model includes a terminal seat 1 and a three-phase terminal assembly 2 provided in the terminal seat 1. Each phase of the terminal assembly 2 includes a wiring frame 3, a wiring screw 4 connected to the upper end of the wiring frame 3, and a U-shaped wiring row 5 with its end inserted into the wiring frame 3. An instrument transformer 18 is sleeved on the U-shaped wiring row 5. A three-phase detection seat 6 is integrally formed on the back of the terminal seat 1. At the upper end of each phase of the detection seat 6, there are a detection piece 7, a fixing screw 8, a first detection screw 9, and a second detection screw 10. The fixing screw 8 is connected to one end of the detection piece 7 and is used to fix the detection piece 7 on the detection seat 6. The first detection screw 9 is connected to the middle of the detection piece 7 and is connected to a detection terminal 11 inserted on the detection seat 6. The first detection screw 9 and the detection terminal 11 are usually threadedly connected and normally closed. The second detection screw 10 is connected to the other end of the detection piece 7, and its lower end is connected to the U-shaped wiring row 5. The second detection screw 10 and the U-shaped wiring row 5 are usually also threadedly connected. When the second detection screw 10 is tightened, it is connected to the U-shaped wiring row 5, and when it is loosened, it is disconnected from the U-shaped wiring row 5. The diameter of the screw hole 12 of the detection piece 7 is larger than the outer diameter of the second detection screw 10, so that the screw head of the second detection screw 10 leaves the U-shaped wiring row 5, and the disconnection between the U-shaped wiring row 5 and the detection terminal 11 can be realized without completely separating the second detection screw 10 from the U-shaped wiring row 5, thus realizing the function of quick on / off.

[0022] Preferably, the detection seat 6 is provided with a positioning rib 13 for positioning the detection piece 7. The detection seat 6 is provided with a positioning post 14 for positioning the detection piece 7. To realize the fixation of the detection piece 7 and ensure the stability of wiring.

[0023] Preferably, a detection wire 15 is connected to the detection terminal 11. The detection wire 15 is used to connect to the PCB board in the electricity meter for voltage detection.

[0024] Preferably, the detection seat 6 is provided with a screw bushing 16 extending to the U-shaped wiring row 5 to play a role in fixing and protecting the screw.

[0025] Preferably, an ear hole plate 17 is formed by bending one end of the detection piece 7. To facilitate the connection (clamping) of the detection device to the connection piece 7. Embodiment 2:

[0026] As Figure 7As shown in the figure, an electric meter of the present utility model includes a meter case 19, and a three-phase electric meter terminal a described in Embodiment 1 is installed inside the meter case 19. The installation method of the three-phase electric meter terminal is the same as that of the traditional one, which will not be elaborated here.

[0027] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model are all included in the protection scope of the present utility model.

Claims

1. A three-phase electricity meter terminal, comprising a terminal base (1) and a three-phase terminal assembly (2) arranged in the terminal base (1). Each phase of the terminal assembly (2) includes a wiring frame (3), a wiring screw (4) connected to the upper end of the wiring frame (3), and a U-shaped wiring row (5) with its end inserted into the wiring frame (3), characterized in that: On the back of the terminal block (1), a three-phase detection block (6) is integrally formed. At the upper end of each phase of the detection block (6), there is a detection piece (7), a fixing screw (8) is connected to one end of the detection piece (7), a first detection screw (9) is connected in the middle, and a second detection screw (10) is connected to the other end of the detection piece (7); the lower end of the first detection screw (9) is connected to a detection terminal (11) inserted on the detection block (6), the lower end of the second detection screw (10) is connected to the U-shaped wiring row (5), and the screw hole (12) on this side of the detection piece (7) is larger than the outer diameter of the second detection screw (10).

2. The three-phase electricity meter wiring terminal according to claim 1, wherein: On the detection block (6), there is a positioning rib (13) for positioning the detection piece (7).

3. The three-phase electricity meter terminal according to claim 1, characterized in that: On the detection block (6), there is a positioning post (14) for positioning the detection piece (7).

4. The three-phase electricity meter terminal according to claim 1, characterized in that: A detection wire (15) is connected to the detection terminal (11).

5. The three-phase electricity meter wiring terminal according to claim 1, characterized in that: On the detection block (6), there is a screw bushing (16) extending to the U-shaped wiring row (5).

6. The three-phase electricity meter terminal according to claim 1, characterized in that: One end of the detection piece (7) is formed with an ear hole plate (17) by bending.

7. The three-phase electricity meter wiring terminal according to claim 1, characterized in that: An instrument transformer (18) is sleeved on the U-shaped wiring row (5).

8. An electricity meter, comprising a meter case (19), characterized in that: Inside the meter case (19), the three-phase meter wiring terminal (a) according to any one of claims 1-7 is installed.

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