Two-phase three-wire electric energy meter

Abstract

The utility model relates to the technical field of two-phase three-wire electric energy meters, in particular to a two-phase three-wire electric energy meter which comprises an installation cover, first through holes are formed in the bottoms and the tops of the two outer side faces of the installation cover, a heat dissipation copper plate is arranged on the inner side face of the installation cover, and an electric energy meter body is installed on the inner side of the installation cover. According to the designed two-phase three-wire electric energy meter, the electric energy meter body is installed on the installation cover, on one hand, the electric energy meter has a protection function, on the other hand, the electric energy meter can be conveniently disassembled and assembled, meanwhile, a wiring indication mark can be referred to during wiring, and the electric energy meter is convenient to assemble and disassemble. In addition, the rubber pad wraps and extrudes the circuit lines after the junction box cover plate is installed, so that the circuit lines are effectively prevented from loosening, and the problems that a traditional two-phase three-wire electric energy meter is troublesome to assemble and disassemble, wiring is prone to making mistakes, and connected wires are prone to loosening are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of two-phase three-wire electric energy meters, in particular to a two-phase three-wire electric energy meter. Background Art

[0002] At present, two-phase electricity is led out from the secondary distribution box, using one phase line, one neutral line and one ground line. Almost all residential electrical appliances use two-phase electricity, and one phase line, one neutral line and one ground line are introduced at the household electricity meter. This type of power distribution is referred to as a two-phase three-wire system, where the phase line and neutral line provide electricity for the equipment (or household appliances), and the ground line provides safety protection. However, the two-phase three-wire electricity meter is installed directly on the wall and then wired. The junction box is at the bottom, which is very inconvenient. At the same time, there is a lack of line indication marks during wiring, which makes it easy to connect incorrectly. In addition, the line is easy to loosen after connection.

[0003] In summary, the present invention solves the existing problems by designing a two-phase three-wire electric energy meter. Utility Model Content

[0004] The purpose of the present utility model is to provide a two-phase three-wire electric energy meter to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A two-phase three-wire electric energy meter comprises a mounting cover, wherein first through holes are provided on the bottom and top of both outer side surfaces of the mounting cover, a heat dissipation copper plate is provided on the inner side surface of the mounting cover, an electric energy meter body is mounted on the inner side of the mounting cover, an inclined panel is fixedly mounted on the outer side surface of the electric energy meter body, a display screen is embedded on the inclined surface of the inclined panel, a junction box cover is mounted on the bottom junction box of the electric energy meter body, second through holes are symmetrically provided at both ends of the outer side surface of the junction box cover, semicircular arc grooves are provided at equal intervals along the length direction on the top of the inner side surface of the junction box cover, rubber pads are mounted on the inner sides of the semicircular arc grooves, and a wiring indication mark is provided on the outer side surface of the junction box cover between the two second through holes.

[0007] As a preferred solution of the present invention, the mounting cover is provided with a mounting plate used in conjunction with bolts to mount it on the wall, and the heat dissipation copper plate on the inner side of the mounting cover is fitted with the inner side of the electric energy meter body.

[0008] As a preferred solution of the present invention, threaded holes are provided on the top and bottom of both external side surfaces of the electric energy meter body, and the mounting cover is threadedly connected to the threaded holes on the electric energy meter body by bolts passing through the first through holes.

[0009] As a preferred solution of the present invention, the inclined panel is in a downwardly inclined state, and the display angle of the display screen is the same as the inclination angle of the inclined panel.

[0010] As a preferred solution of the present invention, the junction box cover is connected to the junction box by means of bolts passing through the second through hole, and the rubber pad on the junction box cover can cover the outer skin of the access circuit line and clamp it after the junction box cover is installed.

[0011] As a preferred solution of the present invention, the wiring indicator marks are divided into two groups, the two arrows in one group point to the first and third wiring terminals respectively, and the two arrows in the other group point to the second and fourth wiring terminals respectively.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. In the utility model, a two-phase three-wire electric energy meter is designed, and the electric energy meter body is installed on the installation cover. On the one hand, the electric energy meter has a protective effect, and on the other hand, it can facilitate the disassembly and assembly of the electric energy meter. At the same time, the wiring instructions can be referred to during wiring to prevent short circuits caused by wiring errors. In addition, the rubber pad covers and squeezes the circuit wires after the junction box cover is installed, thereby effectively preventing the circuit wires from loosening, thereby effectively solving the problems of the traditional two-phase three-wire electric energy meter, which is troublesome to install and disassemble, prone to wiring errors, and easy loosening of the access wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the junction box cover of the utility model;

[0016] Figure 3 This is a schematic diagram of the installation cover structure of the utility model.

[0017] In the figure: 1. Mounting cover; 101. First through hole; 2. Heat dissipation copper plate; 3. Electric energy meter body; 4. Slanted panel; 5. Display screen; 6. Junction box cover; 601. Second through hole; 602. Semicircular arc groove; 7. Rubber pad; 8. Wiring indicator. DETAILED DESCRIPTION

[0018] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] For examples, see Figure 1-3 , the utility model provides a technical solution:

[0023] A two-phase three-wire electric energy meter comprises a mounting cover 1, wherein first through holes 101 are provided on the bottom and top of both outer side surfaces of the mounting cover 1, a heat dissipation copper plate 2 is provided on the inner side surface of the mounting cover 1, an electric energy meter body 3 is mounted on the inner side of the mounting cover 1, an inclined panel 4 is fixedly mounted on the outer side surface of the electric energy meter body 3, a display screen 5 is embeddedly mounted on the inclined surface of the inclined panel 4, a junction box cover 6 is mounted on the bottom junction box of the electric energy meter body 3, second through holes 601 are symmetrically provided at both ends of the outer side surface of the junction box cover 6, semi-circular grooves 602 are provided at equal intervals along the length direction on the top of the inner side surface of the junction box cover 6, rubber pads 7 are mounted on the inner sides of the semi-circular grooves 602, and a wiring indication mark 8 is provided on the outer side surface of the junction box cover 6 between the two second through holes 601.

[0024] Specifically, refer to Figure 1 and Figure 3The mounting cover 1 is provided with a mounting plate for use with bolts to mount it on the wall, and the heat dissipation copper plate 2 on the inner side of the mounting cover 1 is fitted with the inner side of the electric energy meter body 3, thereby preventing the back of the electric energy meter from heating up seriously due to being closed. Threaded holes are provided on the top and bottom of the two external sides of the electric energy meter body 3, and the mounting cover 2 is threadedly connected to the threaded holes on the electric energy meter body 3 by bolts passing through the first through hole 101. On the one hand, it has a protective effect on the electric energy meter, and on the other hand, it can facilitate the disassembly and assembly of the electric energy meter.

[0025] Furthermore, the inclined panel 4 is tilted downward, and the display angle of the display screen 5 is the same as the tilt angle of the inclined panel 4, so that the displayed power level is more convenient to view.

[0026] Furthermore, the wiring indicator marks 8 are divided into two groups, with the two arrows in one group pointing to the first and third wiring terminals respectively, and the two arrows in the other group pointing to the second and fourth wiring terminals respectively, so that they can be effectively checked and referenced during wiring to prevent short circuits caused by wiring errors.

[0027] For details, please refer to Figure 1 and Figure 2 The junction box cover 6 is connected to the junction box by bolts passing through the second through hole, and the rubber pad 7 on the junction box cover 6 can cover the outer skin of the access circuit line and clamp it after the junction box cover 6 is installed to prevent the circuit line from loosening.

[0028] The working process of the present invention is as follows: during the installation of the two-phase three-wire electric energy meter, the installation cover 1 can be installed first, and then the circuit line of the two-phase three-wire electric energy meter is connected and inserted into the installation cover 1, and the bolt is passed through the first through hole 101 to be threadedly connected to the electric energy meter body 3, thereby having a certain protective effect on the electric energy meter body 3, and convenient disassembly and assembly, and convenient for inspection and maintenance. When wiring, the operator can refer to the wiring indication mark 8 to prevent short circuit caused by wiring error. In addition, the connected circuit line is covered and squeezed by the rubber pad 7, thereby effectively preventing the circuit line from loosening.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A two-phase three-wire electric energy meter, comprising a mounting cover (1), characterized in that: The bottom and top of both outer side surfaces of the mounting cover (1) are provided with first through holes (101); a heat dissipation copper plate (2) is provided on the inner side surface of the mounting cover (1); an electric energy meter body (3) is installed on the inner side of the mounting cover (1); an inclined panel (4) is fixedly installed on the outer side surface of the electric energy meter body (3); a display screen (5) is embedded on the inclined surface of the inclined panel (4); a junction box cover (6) is installed on the bottom junction box of the electric energy meter body (3); second through holes (601) are symmetrically provided at both ends of the outer side surface of the junction box cover (6); semi-circular arc grooves (602) are provided at equal intervals along the length direction on the top of the inner side surface of the junction box cover (6); rubber pads (7) are installed on the inner sides of the semi-circular arc grooves (602); and a wiring indication mark (8) is provided on the outer side surface of the junction box cover (6) between the two second through holes (601).

2. A two-phase three-wire electric energy meter according to claim 1, characterized in that: The mounting cover (1) is provided with a mounting plate used in conjunction with bolts to mount the mounting cover on a wall, and the heat dissipation copper plate (2) on the inner side of the mounting cover (1) is fitted with the inner side of the electric energy meter body (3).

3. The two-phase three-wire electric energy meter according to claim 1, characterized in that: Threaded holes are provided on the top and bottom of both external side surfaces of the electric energy meter body (3), and the mounting cover (1) is threadedly connected to the threaded holes on the electric energy meter body (3) by means of bolts passing through the first through hole (101).

4. The two-phase three-wire electric energy meter according to claim 1, characterized in that: The inclined panel (4) is in a downwardly inclined state, and the display angle of the display screen (5) is the same as the inclination angle of the inclined panel (4).

5. The two-phase three-wire electric energy meter according to claim 1, characterized in that: The junction box cover (6) is connected to the junction box by means of bolts passing through the second through hole, and the rubber pad (7) on the junction box cover (6) can cover the outer skin of the access circuit line and clamp it after the junction box cover (6) is installed.

6. The two-phase three-wire electric energy meter according to claim 1, characterized in that: The wiring indicator marks (8) are divided into two groups, the two arrows in one group point to the first and third wiring terminals respectively, and the two arrows in the other group point to the second and fourth wiring terminals respectively.

Images