Stable electric energy meter

Abstract

The utility model discloses a stable electric energy meter. According to the technical scheme, the wiring terminal comprises a shell, an upper cover covering the upper end of the shell, a wiring terminal assembly arranged at the tail of the shell, a tail cover covering the tail of the shell and a PCB arranged in the shell, and the wiring terminal assembly comprises a terminal insulating base and a wiring terminal body; the terminal insulating seat is provided with a group of terminal plugging cavities which are through front and back, the upper end of the terminal insulating seat is provided with wiring through holes which are communicated with the terminal plugging cavities, the wiring terminal main body is plugged in the terminal plugging cavities, the bottom of each terminal plugging cavity is provided with an arc-shaped groove, and the arc-shaped grooves are communicated with the wiring through holes. The bottom of the wiring terminal main body is provided with an arc-shaped protruding part matched with the arc-shaped groove and a wiring part extending out of the terminal insulating seat. The shell is internally provided with a positioning column abutting against the front end of the wiring part.

Description

Technical Field

[0001] The utility model belongs to the field of low-voltage electrical equipment, and in particular relates to an electric energy meter. Background Art

[0002] The structure of a traditional electric energy meter includes: a shell, an upper cover covering the upper end of the shell, a tail cover covering the rear end of the shell, and a PCB board arranged in the shell. A terminal assembly is provided at the rear end of the shell, and the terminal assembly includes a terminal insulation seat and a terminal body. The terminal insulation seat is provided with a group of terminal plug-in cavities that pass through from front to back, and a wiring through-hole connected to the terminal plug-in cavity is provided at the upper end. The terminal body is plugged into the terminal plug-in cavity, and a screw hole is provided at the upper end of the terminal body. Screws are installed in the screw hole to realize wiring of the terminal body and fix it in the terminal plug-in cavity. The disadvantage is that the terminal body has poor stability in the terminal plug-in cavity because it has no positioning structure. Especially during transportation, if the screws are not tightened, it is easy to cause the screws and the terminal body to fall off as a whole. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a stable electric energy meter.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is as follows: it includes a shell, an upper cover covering the upper end of the shell, a terminal assembly arranged at the tail of the shell, a tail cover covering the tail of the shell and a PCB board arranged in the shell, the terminal assembly includes a terminal insulating seat and a terminal body, the terminal insulating seat is provided with a group of terminal plug-in cavities passing through from front to back, and the upper end is provided with a wiring through-hole connected to the terminal plug-in cavity, the terminal body is plugged into the terminal plug-in cavity, and is characterized in that: an arc-shaped groove is provided at the bottom of the terminal plug-in cavity, an arc-shaped protrusion adapted to the arc-shaped groove and a wiring portion extending out of the terminal insulating seat is provided at the bottom of the terminal body, and a positioning column is provided in the shell that abuts against the front end of the wiring portion.

[0005] The stable electric energy meter is characterized in that a first positioning plane is provided on the top of the wiring part, the positioning column is sheet-shaped, and a second positioning plane is provided at the front end to abut against the first positioning plane, and a guiding slope is provided on the top of the second positioning plane.

[0006] The stable electric energy meter is characterized in that a reinforcing rib is provided at the rear end of the positioning column.

[0007] The stable electric energy meter is characterized in that a screw sheath is integrally formed on the wiring through hole, and the upper end of the wiring terminal body is provided with a tapered portion embedded in the wiring through hole.

[0008] The stable electric energy meter is characterized in that the shell is plugged into the slot on the terminal insulation seat through the clamping rib at the rear end, and the shell is also hung and fixed with the second hook on the terminal insulation seat through the first hook at the rear end.

[0009] The stable electric energy meter is characterized in that the rear end of the shell is provided with an inner wall and an outer wall, the terminal insulating seat is provided between the inner walls, and the first hook is integrally formed on the inner wall.

[0010] The stable electric energy meter is characterized in that a mounting hole is provided at the rear end of the shell corresponding to the middle of the inner wall and the outer wall.

[0011] The stable electric energy meter is characterized in that screw holes are provided on the terminal body and the wiring part.

[0012] The advantages of the stable electric energy meter of the present invention are as follows: 1. After the terminal assembly is installed in the shell, the positioning column in the shell will abut the wiring part of the terminal body, thereby improving the stability of the installation of the terminal body and preventing shaking. Even if the screws are not installed, the terminal body will not fall off; 2. Since the shaking of the terminal body is prevented, the screws are not likely to fall off from the terminal body during transportation.

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an exploded view of the utility model stable electric energy meter;

[0015] Figure 2 It is a cross-sectional view of the utility model stable electric energy meter;

[0016] Figure 3 This is a front structural diagram of the terminal insulation seat of the utility model;

[0017] Figure 4 This is a schematic diagram of the back structure of the terminal insulation seat of the utility model;

[0018] Figure 5 It is a structural diagram of the main body of the wiring terminal of the utility model;

[0019] Figure 6 It is a partial enlarged view of the shell of the utility model. DETAILED DESCRIPTION

[0020] like Figure 1-6As shown, the stable electric energy meter of the present invention includes a shell 1, an upper cover 2 covering the upper end of the shell 1, a terminal assembly 3 provided at the tail of the shell 1, a tail cover 4 covering the tail of the shell 1, and a PCB board 5 provided in the shell 1. The terminal assembly 3 includes a terminal insulating seat 6 and a terminal body 7. The terminal insulating seat 6 is provided with a group of terminal plug-in cavities 8 that pass through from front to back, and the upper end of the terminal insulating seat 6 is provided with a wiring through-hole 9 that is connected to the terminal plug-in cavity 8, through which screws are inserted. The terminal body 7 is plugged into the terminal plug-in cavity 8. An arc-shaped groove 10 is provided at the bottom of the terminal plug-in cavity 8, and an arc-shaped protrusion 11 adapted to the arc-shaped groove 10 and a wiring portion 12 extending out of the terminal insulating seat 6 are provided at the bottom of the terminal body 7. A positioning column 13 is provided in the shell 1 to abut against the front end of the wiring portion 12. During assembly, the terminal body 7 is first installed into the terminal insertion cavity 8 of the terminal insulating seat 6, and then the terminal insulating seat 6 is installed into the rear end of the housing 1. After assembly is completed, the positioning column 13 rests against the front end of the wiring part 12.

[0021] Preferably, a first positioning flat surface 14 is provided on the top of the connection portion 12, and the positioning post 13 is in the form of a sheet, with a second positioning flat surface 15 provided at its front end to abut against the first positioning flat surface 14. A guiding slope 16 is provided on the top of the second positioning flat surface 15. The sheet-shaped positioning post 13 has a certain tension, and the guiding slope 16 provided on the top makes it easier for the first positioning flat surface 14 to be inserted into the second positioning flat surface 15 and maintain stability.

[0022] Preferably, a reinforcing rib 17 is provided at the rear end of the positioning post 13 to prevent the positioning post 13 from being broken during the pressure application process.

[0023] Preferably, a screw sheath 18 is integrally formed on the wiring through hole 9, and a tapered portion 19 is provided on the upper end of the wiring terminal body 7 for embedding into the wiring through hole 9. This can further prevent the shaking and falling off of the wiring terminal body 7.

[0024] Preferably, the housing 1 is plugged into and matched with the slot 21 on the terminal insulating seat 6 via the retaining rib 20 at the rear end, and the housing 1 is further hooked and fixed to the second hook 23 on the terminal insulating seat 6 via the first hook 22 at the rear end, thereby achieving screw-free installation between the housing 1 and the terminal insulating seat 6.

[0025] Preferably, the rear end of the housing 1 is provided with an inner wall 24 and an outer wall 25, the terminal insulating seat 6 is positioned between the inner walls 24, and the first hook 22 is integrally formed on the inner wall 24. A mounting hole 26 is provided at the rear end of the housing 1, corresponding to the center between the inner wall 24 and the outer wall 25. Positioning the first hook 22 on the inner wall 24 provides a certain tension, making it easier to engage the second hook 23. Furthermore, the mounting hole 26 facilitates installation.

[0026] Preferably, screw holes 27 are provided on the terminal body 7 and the wiring portion 12 to facilitate wiring.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A stable electric energy meter, comprising a housing (1), an upper cover (2) covering the upper end of the housing (1), a terminal assembly (3) provided at the rear of the housing (1), a tail cover (4) covering the rear of the housing (1), and a PCB board (5) provided in the housing (1), wherein the terminal assembly (3) comprises a terminal insulating seat (6) and a terminal body (7), the terminal insulating seat (6) is provided with a group of terminal plug-in cavities (8) extending from front to back, and a wiring through hole (9) communicating with the terminal plug-in cavities (8) is provided at the upper end, the terminal body (7) is plugged into the terminal plug-in cavities (8), and is characterized in that: The bottom of the terminal insertion cavity (8) is provided with an arc-shaped groove (10), the bottom of the terminal body (7) is provided with an arc-shaped protrusion (11) adapted to the arc-shaped groove (10) and a wiring portion (12) extending out of the terminal insulating seat (6), and a positioning column (13) is provided in the housing (1) to abut against the front end of the wiring portion (12).

2. The stable electric energy meter according to claim 1, characterized in that: A first positioning plane (14) is provided on the top of the connection portion (12); the positioning column (13) is sheet-shaped and has a second positioning plane (15) at its front end that abuts against the first positioning plane (14); and a guiding slope (16) is provided on the top of the second positioning plane (15).

3. The stable electric energy meter according to claim 2, characterized in that: A reinforcing rib (17) is provided at the rear end of the positioning column (13).

4. The stable electric energy meter according to claim 1, characterized in that: A screw sheath (18) is integrally formed on the wiring through hole (9), and a tapered portion (19) embedded in the wiring through hole (9) is provided at the upper end of the wiring terminal body (7).

5. The stable electric energy meter according to claim 1, characterized in that: The housing (1) is plugged into and matched with the slot (21) on the terminal insulation seat (6) via the retaining rib (20) at the rear end, and the housing (1) is also hooked and fixed with the second hook (23) on the terminal insulation seat (6) via the first hook (22) at the rear end.

6. The stable electric energy meter according to claim 5, characterized in that: The rear end of the housing (1) is provided with an inner wall (24) and an outer wall (25), the terminal insulating seat (6) is provided between the inner walls (24), and the first hook (22) is integrally formed on the inner wall (24).

7. The stable electric energy meter according to claim 6, characterized in that: A mounting hole (26) is provided at the rear end of the housing (1) corresponding to the middle of the inner wall (24) and the outer wall (25).

8. The stable electric energy meter according to claim 1, characterized in that: The terminal body (7) and the wiring portion (12) are both provided with screw holes (27).

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