Single-phase electronic prepayment double-control electric energy meter

Abstract

The utility model discloses a single-phase electronic prepaid double-control electric energy meter, which belongs to the technical field of electric energy meters and comprises a front shell and a rear shell, the front shell is fixedly mounted at the front end of the rear shell, cover plates are hinged to two sides of the front surface of the front shell, two connecting plates are fixedly connected to the back surface of the front shell, connecting holes are formed in the connecting plates, and the front shell is fixedly connected with the rear shell. Two connecting grooves are formed in the front face of the rear shell, a sliding groove is formed in the position, located between the two connecting grooves, of the rear shell, a two-way screw rod is rotationally installed in the sliding groove, a driving piece is arranged in the middle of the two-way screw rod, and the two ends of the two-way screw rod are in threaded connection with connecting columns; through the arrangement of the connecting plate, the connecting hole, the connecting groove, the sliding groove, the two-way screw rod, the driving piece and the connecting column, when the electric energy meter is disassembled, the front shell and the rear shell can be disassembled only by moving the connecting column out of the connecting hole, operation is convenient, and the interior of the electric energy meter is convenient to maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric energy meters, and particularly relates to a single-phase electronic prepaid dual-control electric energy meter. Background Art

[0002] Single-phase single-loop prepaid electric energy meters are widely used for prepayment in families, student dormitories in schools, collective dormitories in enterprises and institutions, etc. At present, most single-phase single-loop prepaid electric energy meters adopt one-loop metering and control, and the total electricity consumption and power consumption are displayed together. Therefore, only the electricity consumption and power consumption of one path of the user can be displayed, and the electrical appliances on the branch circuits cannot be metered and controlled. The user cannot master the current electricity consumption information of the branch circuits, such as electricity consumption and the power of electrical appliances, which brings many inconveniences to the user's electricity consumption control and management.

[0003] In order to solve the above problems, some single-phase electronic prepaid dual-control electric energy meters have emerged in the prior art. For example, the Chinese patent with the publication number CN213633795U discloses a dual-control dual-metering intelligent electric energy meter with overload protection, including a meter case. A control module is arranged inside the meter case. The control module includes a main control unit, which is connected to each peripheral module unit to coordinate the work among the module units; a communication unit, which is connected to the main control unit to read the data in the main control unit and the data storage unit and remotely send control commands; an electric energy metering unit, which has a metering and control module and is respectively connected to a voltage sensor, a current sensor and the main control unit, and respectively collects the analog signals of the corresponding voltage and current through the voltage sensor and the current sensor; a data storage unit, which is connected to the main control unit, and the main control unit stores the operation parameters of the electric energy meter in real time; a relay control unit, which controls and holds the relay and locks the opening and closing state of the relay; a display and indication unit, which is connected to the main control unit to display the current metering data and indicate the working state; a leakage current detection unit, which is connected to the main control unit and integrates a leakage current transformer to realize leakage current monitoring.

[0004] Regarding the above related technologies, the inventor found that at least the following problems exist in this technology: Most of the existing dual-control electric energy meters are fixed with screws, resulting in frequent disassembly of multiple bolts when repairing the inside of the electric energy meter, and only then can the outer shell of the electric energy meter be detached, and the operation is very cumbersome. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a single-phase electronic prepaid dual-control electric energy meter to solve the problems raised in the above background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a single-phase electronic prepaid dual-control electric energy meter, comprising a front shell and a rear shell, the front shell is fixedly installed on the front end of the rear shell, cover plates are hinged on both sides of the front side of the front shell, two connecting plates are fixedly connected to the back side of the front shell, connecting holes are provided on the connecting plates, two connecting grooves are provided on the front side of the rear shell, a slide groove is provided on the rear shell between the two connecting grooves, a bidirectional screw is rotatably installed in the slide groove, a driving member is provided in the middle of the bidirectional screw, and connecting columns are threadedly connected to both ends of the bidirectional screw.

[0007] As a preferred embodiment, a snap-in hole is provided at one end of the cover plate, springs are embedded and installed at both upper and lower ends of the front shell, and one end of the spring abuts against a snap-in block.

[0008] As a preferred embodiment, the driving member includes a knob, a worm and a worm wheel, the knob is fixedly connected to the end of the worm, the worm is rotatably installed in the slide slot, and the worm wheel is fixedly connected to the middle of the bidirectional screw and meshes with the worm.

[0009] As a preferred implementation, a receiving groove is provided on one side of the rear shell, and the knob is arranged in the receiving groove.

[0010] As a preferred embodiment, an end cover is hinged at the opening of the accommodating groove.

[0011] As a preferred implementation, the connecting column is a square hollow column, and the connecting column is slidably connected to the inner wall of the slide groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The single-phase electronic prepaid dual-control electric energy meter, through the arrangement of the connecting plate, the connecting hole, the connecting groove, the sliding groove, the bidirectional screw, the driving member and the connecting column, can use the driving member to control the rotation of the bidirectional screw, so that the bidirectional screw drives the connecting column to slide along the sliding groove. When fixing the front shell and the rear shell, it is only necessary to insert the connecting plate into the connecting groove and then control the connecting column to be inserted into the connecting hole. When disassembling the electric energy meter, it is only necessary to remove the connecting column from the connecting hole to disassemble the front shell and the rear shell. The operation is convenient and it is easy to repair the inside of the electric energy meter.

[0014] The single-phase electronic prepaid dual-control electric energy meter can protect the connection terminals through the arrangement of the cover plate, the clamping hole, the spring and the clamping block. When closing the cover plate, it is only necessary to make the cover plate contact with the front face of the front shell, and then use the spring to push the clamping block into the clamping hole. When it is necessary to open the cover plate, it is only necessary to press the clamping block to disengage the clamping block from the clamping hole, and the cover plate can be opened, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 Schematic diagram of the side-sectional structure of the present utility model;

[0017] Figure 3 For the Figure 2 enlarged view of the structure at position A in the present utility model;

[0018] Figure 4 For the Figure 2 enlarged view of the structure at position B in the present utility model.

[0019] In the figure: 1. Front shell; 11. Cover plate; 12. Connecting plate; 13. Connecting hole; 14. Clamping hole; 15. Spring; 16. Clamping block; 2. Rear shell; 21. Connecting groove; 22. Sliding groove; 23. Bi-directional screw; 24. Driving member; 241. Knob; 242. Worm; 243. Worm gear; 25. Connecting column; 26. Accommodating groove; 27. End cover. Specific embodiments

[0020] The following further describes the present utility model in conjunction with embodiments.

[0021] The following embodiments are used to illustrate the present utility model, but cannot be used to limit the protection scope of the present utility model. The conditions in the embodiments can be further adjusted according to specific conditions. Under the premise of the concept of the present utility model, simple improvements to the method of the present utility model all fall within the scope of protection required by the present utility model.

[0022] Please refer to Figures 1-4 , the present utility model provides a single-phase electronic prepaid dual-control electric energy meter, including a front shell 1 and a rear shell 2. The front shell 1 is fixedly installed at the front end of the rear shell 2. Two connecting plates 12 are fixedly connected to the back surface of the front shell 1. Connecting holes 13 are provided on the connecting plates 12. Two connecting grooves 21 are provided on the front surface of the rear shell 2. A sliding groove 22 is provided between the two connecting grooves 21 of the rear shell 2. A bi-directional screw 23 is rotatably installed in the sliding groove 22. A driving member 24 is provided in the middle of the bi-directional screw 23. Both ends of the bi-directional screw 23 are threadedly connected with connecting columns 25. The connecting columns 25 are square hollow columns. The connecting columns 25 are slidably connected to the inner wall of the sliding groove 22. Through the settings of the connecting plate 12, the connecting hole 13, the connecting groove 21, the sliding groove 22, the bi-directional screw 23, the driving member 24 and the connecting column 25, the driving member 24 can be used to control the rotation of the bi-directional screw 23, so that the bi-directional screw 23 drives the connecting column 25 to slide along the sliding groove 22. When fixing the front shell 1 and the rear shell 2, only need to insert the connecting plate 12 into the connecting groove 21, and then control the connecting column 25 to insert into the connecting hole 13. When disassembling the electric energy meter, only need to move the connecting column 25 out of the connecting hole 13, then the front shell 1 and the rear shell 2 can be disassembled, and the operation is convenient, which is convenient for repairing the inside of the electric energy meter.

[0023] Specifically, the driving member 24 includes a knob 241, a worm 242 and a worm wheel 243. The knob 241 is fixedly connected to the end of the worm 242, the worm 242 is rotatably installed in the slide slot 22, and the worm wheel 243 is fixedly connected to the middle of the bidirectional screw 23 and meshes with the worm 242. Through the setting of the driving member 24, during operation, it is only necessary to rotate the knob 241, the knob 241 will drive the worm 242 to rotate, the worm 242 will drive the worm wheel 243 to rotate, and the worm wheel 243 will drive the bidirectional screw 23 to rotate; a receiving groove 26 is provided on one side of the rear shell 2, the knob 241 is arranged in the receiving groove 26, and an end cover 27 is hinged at the opening of the receiving groove 26. Through the setting of the receiving groove 26 and the end cover 27, the knob 241 can be stored and protected.

[0024] Cover plates 11 are hinged on both sides of the front face of the front shell 1, and a snap-in hole 14 is provided at one end of the cover plate 11. Springs 15 are embedded and installed at both upper and lower ends of the front shell 1, and one end of the spring 15 abuts against a snap-in block 16. Through the arrangement of the cover plate 11, the snap-in hole 14, the spring 15 and the snap-in block 16, the cover plate 11 can protect the wiring terminals. When closing the cover plate 11, it is only necessary to make the cover plate 11 contact with the front face of the front shell 1, and then use the spring 15 to push the snap-in block 16 into the snap-in hole 14. When it is necessary to open the cover plate 11, it is only necessary to press the snap-in block 16 to disengage the snap-in block 16 from the snap-in hole 14 to open the cover plate 11.

[0025] The working principle and use process of the utility model are as follows: first, through the arrangement of the connecting plate 12, the connecting hole 13, the connecting groove 21, the slide groove 22, the bidirectional screw 23, the driving member 24 and the connecting column 25, the driving member 24 can be used to control the rotation of the bidirectional screw 23, so that the bidirectional screw 23 drives the connecting column 25 to slide along the slide groove 22. When fixing the front shell 1 and the rear shell 2, it is only necessary to insert the connecting plate 12 into the connecting groove 21, and then control the connecting column 25 to be inserted into the connecting hole 13. When disassembling the electric energy meter, it is only necessary to remove the connecting column 25 from the connecting hole 13 to disassemble the front shell 1 and the rear shell 2. The operation is convenient and it is easy to repair the internal part of the electric energy meter.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-phase electronic prepaid dual-control electric energy meter, comprising a front shell (1) and a rear shell (2), characterized in that: The front shell (1) is fixedly mounted on the front end of the rear shell (2); both sides of the front face of the front shell (1) are hingedly connected with cover plates (11); the back face of the front shell (1) is fixedly connected with two connecting plates (12); the connecting plates (12) are provided with connecting holes (13); the front face of the rear shell (2) is provided with two connecting grooves (21); the rear shell (2) is provided with a slide groove (22) between the two connecting grooves (21); a bidirectional screw rod (23) is rotatably mounted in the slide groove (22); a driving member (24) is provided in the middle of the bidirectional screw rod (23); and both ends of the bidirectional screw rod (23) are threadedly connected with connecting columns (25).

2. The single-phase electronic prepaid dual-control electric energy meter according to claim 1 is characterized in that: A snap-fit ​​hole (14) is provided at one end of the cover plate (11), springs (15) are embedded and installed at both upper and lower ends of the front shell (1), and one end of the spring (15) abuts against a snap-fit ​​block (16).

3. The single-phase electronic prepaid dual-control electric energy meter according to claim 1 is characterized in that: The driving member (24) comprises a knob (241), a worm (242) and a worm wheel (243); the knob (241) is fixedly connected to the end of the worm (242); the worm (242) is rotatably mounted in the slide groove (22); and the worm wheel (243) is fixedly connected to the middle of the bidirectional screw (23) and meshes with the worm (242).

4. The single-phase electronic prepaid dual-control electric energy meter according to claim 3 is characterized in that: A receiving groove (26) is provided on one side of the rear shell (2), and the knob (241) is arranged in the receiving groove (26).

5. The single-phase electronic prepaid dual-control electric energy meter according to claim 4 is characterized in that: An end cover (27) is hinged at the opening of the containing groove (26).

6. The single-phase electronic prepaid dual-control electric energy meter according to claim 1 is characterized in that: The connecting column (25) is a square hollow column, and the connecting column (25) is slidably connected to the inner wall of the sliding groove (22).

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