Three-phase four-wire electric energy meter housing
By designing the locking tongue and unlocking lever in the three-phase and four-wire power meter case, the tight connection and linkage between the upper and lower covers of the power meter are achieved, and the problem of poor protection of the existing power meter case is solved, which significantly improves the safety of the power meter.
Patent Information
- Application Number
- CN202421455065.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-06-25
AI Technical Summary
There is a lack of correlation between the upper cover and the lower cover of the existing three-phase and four-wire power meter case, and users or outsiders can easily open it, resulting in poor protection of the power meter and poses safety hazards.
A three-phase four-wire power meter case including an upper cover of the power meter, a base of the power meter and a lower cover assembly is designed. The lower cover assembly of the power meter includes a locking tongue, a locking spring and an unlocking lever. Through the design of these components, the connection tightness and linkage between the upper cover and the lower cover of the power meter is realized. The hidden unlocking lever setting makes it difficult to open the upper cover and the lower cover of the power meter easily.
Through the design of the locking tongue and unlocking lever, the connection tightness and linkage between the upper and lower covers of the power meter are improved, preventing users from easily opening the power meter, thereby significantly improving the safety and protection performance of the power meter.
Smart Images
Figure CN222913739U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a three-phase four-wire electric energy meter shell. Background Art
[0002] The three-phase four-wire energy meter is a common energy metering device. It is mainly used to measure the three-phase active energy of the low-voltage network, and can be equipped with RS485 communication function to facilitate users to monitor, collect and manage electricity consumption. The housing of the three-phase four-wire energy meter generally includes an energy meter upper cover, an energy meter base, a wiring terminal and an energy meter lower cover arranged on the wiring terminal. There is no correlation between the energy meter upper cover and the energy meter lower cover of the existing three-phase four-wire energy meter housing. Users or outsiders can easily open the energy meter upper cover or the energy meter lower cover by removing the screws of the energy meter upper cover and the energy meter lower cover. The protection of the energy meter is poor and there are safety hazards. Improvements and optimizations are made for this. Utility Model Content
[0003] In order to solve the above problems, the technical problem to be solved by the utility model is to provide a three-phase four-wire electric energy meter housing with good protective performance.
[0004] The technical solution adopted by the housing of the three-phase four-wire electric energy meter of the utility model: including an electric energy meter upper cover, an electric energy meter base and an electric energy meter lower cover assembly, characterized in that the electric energy meter lower cover assembly includes an electric energy meter lower cover, a lock tongue, a locking spring and an unlocking rod, the lock tongue includes a lock tongue locking portion for docking and locking with the electric energy meter upper cover and a lock tongue docking portion vertically arranged at the rear end of the lock tongue locking portion, and the unlocking rod includes an unlocking rod main body connected to the lock tongue and an unlocking rod positioning portion;
[0005] The lower cover of the electric energy meter is provided with a lower cover installation cavity for installing the wiring terminal and a lower cover front plate, a lock tongue limiting opening for installing the lock tongue locking portion is provided in the middle of the lower cover front plate, a spring positioning plate and a lower cover through hole corresponding to the unlocking rod positioning portion are provided in the lower cover installation cavity near the lock tongue limiting opening, a positioning plate giving way opening for the unlocking rod body to give way is provided below the spring positioning plate, one end of the locking spring is against the lock tongue docking portion and the other end thereof is against the spring positioning plate.
[0006] The upper cover of the electric energy meter includes an upper cover body and an upper cover partition, an upper cover positioning groove for positioning the lower cover front plate is formed between the upper cover body and the upper cover partition, and an upper cover locking opening for locking the locking tongue locking part is provided on the lower end surface of the upper cover body.
[0007] A lock tongue receiving portion corresponding to the lower cover mounting cavity is provided just below the lock tongue docking portion, and the end of the unlocking rod main body is connected to the lock tongue receiving portion.
[0008] The unlocking rod also includes an unlocking rod end sealing portion disposed outside the through hole of the lower cover, the outer diameter of the unlocking rod end sealing portion is larger than the outer diameter of the unlocking rod positioning portion, and the outer diameter of the unlocking rod positioning portion is larger than the outer diameter of the unlocking rod body.
[0009] The spring positioning plate and the locking tongue abutment portion are both provided with spring positioning columns for preventing the locking spring from falling off.
[0010] A lock tongue inclined guide surface is provided at the front end of the lock tongue locking portion.
[0011] The advantages of the three-phase four-wire electric energy meter housing of the utility model are: the lock tongue cooperates with the electric energy meter upper cover and the electric energy meter lower cover structure to achieve the connection tightness and linkage between the electric energy meter upper cover and the electric energy meter lower cover; the hidden unlocking rod is arranged, so that the electric energy meter upper cover and the electric energy meter lower cover cannot be easily opened, the protection is good, and the safety is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0013] Figure 1 It is a structural schematic diagram of the housing of the three-phase four-wire electric energy meter of the utility model;
[0014] Figure 2 It is a structural schematic diagram of the lower cover assembly of the utility model electric energy meter;
[0015] Figure 3 It is a structural schematic diagram of the lock tongue of the utility model;
[0016] Figure 4 It is a structural schematic diagram of the unlocking lever of the utility model;
[0017] Figure 5 It is a structural schematic diagram of the lower cover of the utility model electric energy meter;
[0018] Figure 6 The utility model is a schematic diagram of the structure of the upper cover of the electric energy meter. DETAILED DESCRIPTION
[0019] like Figure 1-6As shown, the three-phase four-wire electric energy meter housing involved in the utility model includes an electric energy meter upper cover 1, an electric energy meter base 2 and an electric energy meter lower cover assembly 3, the electric energy meter lower cover assembly 3 includes an electric energy meter lower cover 5, a lock tongue 6, a locking spring 7 and an unlocking rod 8, the lock tongue 6 includes a lock tongue locking portion 10 for docking and locking with the electric energy meter upper cover 1 and a lock tongue docking portion 11 vertically arranged at the rear end of the lock tongue locking portion 10, the unlocking rod 8 includes an unlocking rod body 14 connected to the lock tongue 6 and an unlocking rod positioning portion 15; the electric energy meter lower cover 5 is provided with a lower cover installation cavity 17 for installing a wiring terminal and a lower cover front plate 18, the middle portion of the lower cover front plate 18 A lock tongue limiting opening 19 is provided for installing the lock tongue locking portion 10, a spring positioning plate 21 and a lower cover through hole 23 corresponding to the unlocking rod positioning portion 15 are provided in the lower cover installation cavity 17 near the lock tongue limiting opening 19, a positioning plate making way opening 22 for making way for the unlocking rod body 14 is provided below the spring positioning plate 21, one end of the locking spring 7 abuts against the lock tongue docking portion 11 and the other end thereof abuts against the spring positioning plate 21, and the design of the lock tongue 6 strengthens the connection tightness and linkage between the upper cover and the lower cover of the electric energy meter, prevents users from easily opening the upper cover or the lower cover of the electric energy meter, and effectively improves the safety of the electric energy meter.
[0020] The electric energy meter upper cover 1 includes an upper cover body 25 and an upper cover partition 26, and an upper cover positioning groove 27 for positioning the lower cover front plate 18 is formed between the upper cover body 25 and the upper cover partition 26. The lower end surface of the upper cover body 25 is provided with an upper cover locking mouth 28 for locking the lock tongue locking part 10, which is used in conjunction with the lock tongue 6, with a multiple positioning and limiting structure and better protection performance.
[0021] A lock tongue receiving portion 12 corresponding to the lower cover mounting cavity 17 is provided directly below the lock tongue docking portion 11, and the end of the unlocking rod body 14 is connected to the lock tongue receiving portion 12, so that the lock tongue 6 can move more smoothly and is not easy to shake.
[0022] The unlocking rod 8 also includes an unlocking rod end sealing portion 16 disposed on the outside of the lower cover through hole 23. The outer diameter of the unlocking rod end sealing portion 16 is larger than the outer diameter of the unlocking rod positioning portion 15. The outer diameter of the unlocking rod positioning portion 15 is larger than the outer diameter of the unlocking rod body 14. The unlocking rod 8 is concealed and difficult for users and outsiders to detect. When maintenance is required, the staff can unlock the door by pulling the unlocking rod 8, which is convenient for subsequent maintenance and has good protection.
[0023] The spring positioning plate 21 and the lock tongue docking portion 11 are both provided with a spring positioning column 30 to prevent the locking spring 7 from falling off, thereby improving the reliability of the action.
[0024] The front end of the locking tongue locking portion 10 is provided with a locking tongue inclined guide surface 31 for easy docking and smooth transition.
[0025] 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 four-wire electric energy meter housing, comprising an electric energy meter upper cover (1), an electric energy meter base (2) and an electric energy meter lower cover assembly (3), characterized in that: The electric energy meter lower cover assembly (3) comprises an electric energy meter lower cover (5), a locking tongue (6), a locking spring (7) and an unlocking lever (8); the locking tongue (6) comprises a locking tongue locking portion (10) for docking and locking with the electric energy meter upper cover (1) and a locking tongue docking portion (11) vertically arranged at the rear end of the locking tongue locking portion (10); the unlocking lever (8) comprises an unlocking lever body (14) connected to the locking tongue (6) and an unlocking lever positioning portion (15); The lower cover (5) of the electric energy meter is provided with a lower cover installation cavity (17) for installing the wiring terminal and a lower cover front plate (18); a lock tongue limiting opening (19) for installing the lock tongue locking portion (10) is provided in the middle of the lower cover front plate (18); a spring positioning plate (21) and a lower cover through hole (23) corresponding to the unlocking rod positioning portion (15) are provided in the lower cover installation cavity (17) near the lock tongue limiting opening (19); a positioning plate giving way opening (22) for giving way to the unlocking rod body (14) is provided below the spring positioning plate (21); one end of the locking spring (7) abuts against the lock tongue docking portion (11) and the other end thereof abuts against the spring positioning plate (21).
2. The three-phase four-wire electric energy meter housing according to claim 1, characterized in that: The electric energy meter upper cover (1) comprises an upper cover body (25) and an upper cover partition (26); an upper cover positioning groove (27) for positioning the lower cover front plate (18) is formed between the upper cover body (25) and the upper cover partition (26); and an upper cover locking opening (28) for locking the locking tongue locking portion (10) is provided on the lower end surface of the upper cover body (25).
3. The three-phase four-wire electric energy meter housing according to claim 1, characterized in that: A lock tongue receiving portion (12) corresponding to the lower cover mounting cavity (17) is provided directly below the lock tongue docking portion (11), and an end of the unlocking lever body (14) is connected to the lock tongue receiving portion (12).
4. The three-phase four-wire electric energy meter housing according to claim 1, characterized in that: The unlocking rod (8) further comprises an unlocking rod end sealing portion (16) disposed outside the lower cover through hole (23), wherein the outer diameter of the unlocking rod end sealing portion (16) is greater than the outer diameter of the unlocking rod positioning portion (15), and the outer diameter of the unlocking rod positioning portion (15) is greater than the outer diameter of the unlocking rod body (14).
5. The three-phase four-wire electric energy meter housing according to claim 1, characterized in that: The spring positioning plate (21) and the lock tongue docking portion (11) are both provided with a spring positioning column (30) for preventing the locking spring (7) from falling off.
6. The three-phase four-wire electric energy meter housing according to claim 1, characterized in that: A lock tongue inclined guide surface (31) is provided at the front end of the lock tongue locking portion (10).