An easy-to-maintain electricity meter

Abstract

This utility model relates to the field of electricity meter technology, specifically to an electricity meter that is easy to maintain. It includes an electricity meter with multiple terminals at its bottom; a junction box detachably connected to the bottom of the electricity meter body; multiple independent wiring units located inside the junction box for fixing external wires; and a spring terminal group including an inner contact end and an outer contact end. The inner contact end is located inside the junction box and electrically connected to the wires, while the outer contact end extends to the outside of the junction box, forming a detachable electrical connection with the terminals. In this utility model, the electricity meter and junction box are separate structures. This modular design makes the maintenance of the electricity meter more convenient, eliminating the need to disconnect the power and then individually disconnect the lower wires when disassembling the meter. The electricity meter and junction box are connected by a snap-fit ​​assembly, and a reliable electrical connection is achieved through the spring terminals on the junction box. Installation and disassembly of the electricity meter and junction box are both simple.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, specifically to an electricity meter that is easy to maintain. Background Technology

[0002] An electricity meter is an instrument used to measure electrical energy; it is also called a kilowatt-hour meter, a power meter, or a kilowatt-hour meter. It refers to instruments that measure various electrical quantities. During long-term use, electricity meters may experience inaccurate readings or external damage due to external environmental factors or their own quality, requiring regular maintenance or replacement.

[0003] Existing electricity meters are generally installed in cabinets during use. For example, when a common single-phase electricity meter is being repaired, the power supply to the meter must first be cut off. Due to the limited space inside the cabinet, the electricity meter needs to be disassembled for repair. During disassembly, multiple wires need to be disconnected one by one in order to completely disassemble the electricity meter. The operation steps are cumbersome and inconvenient. Utility Model Content

[0004] This utility model proposes an energy meter that is easy to maintain, in order to overcome the shortcomings of the prior art.

[0005] The technical solution of this utility model is as follows: an energy meter that is easy to maintain, including an energy meter with multiple terminals at its bottom; a junction box detachably connected to the bottom of the energy meter body; multiple independent wiring units located inside the junction box for fixing external wires; and a spring terminal group including an inner contact end and an outer contact end, wherein the inner contact end is located inside the junction box and electrically connected to the wires, and the outer contact end extends to the outside of the junction box and forms a detachable electrical connection with the terminals.

[0006] Preferably, the junction box is further provided with an isolation component for easy maintenance. The isolation component includes: an isolation plate, which is arranged along the length of the junction box and slidably connected to the junction box, with insulating surfaces on both sides; two conductive plates, which are arranged on the side of the isolation plate facing the inside of the junction box, and the two conductive plates are electrically isolated from each other; each set of conductive plates corresponds to the outer contact end of two spring terminals, and the conductive plate has a guide wedge structure on the end near the spring terminal; when the isolation plate slides to the maintenance position, the conductive plate simultaneously bridges the corresponding spring terminal, so that the neutral wire and the live wire of the energy meter form a short circuit loop.

[0007] Preferably, the bottom of the junction box is provided with multiple wire through holes corresponding to the independent wiring units. The multiple independent wiring units are arranged linearly at intervals in the box body, and each wiring unit includes an insulating wiring shell aligned axially with the wire through hole.

[0008] Preferably, the housing is provided with a conduit for connecting wires, and the inner contact end of the spring terminal is electrically connected to the conduit.

[0009] Preferably, the conduit is provided with a wire fixing mechanism, which includes: a pressure plate that slides against the inner wall of the conduit and has anti-slip texture on its surface facing the wire; and an adjusting bolt that passes through a threaded hole in the conduit housing and is rotatably connected to the pressure plate. The operating end of the rotating adjusting bolt drives the pressure plate to move along the direction perpendicular to the wire, thereby tightening or releasing the wire.

[0010] Preferably, it also includes a mounting bracket for fixing the electricity meter in the meter box. The mounting bracket includes: a frame body with at least two mounting holes; a limiting component disposed on the frame body, including an elastic locking pin with a wedge-shaped guide surface at its head and a return spring abutting the tail of the locking pin. The back of the electricity meter is provided with a mounting block with a groove, and the limiting component and the groove form a detachable locking engagement.

[0011] Preferably, the mounting bracket is provided with a T-shaped groove in the vertical direction, and the junction box is provided with a slider that slides in cooperation with the T-shaped groove. The length of the groove is greater than the length of the slider, and the slider slides along the T-shaped groove to realize the vertical displacement adjustment of the junction box on the mounting bracket.

[0012] Preferably, the junction box and the electricity meter are connected by a snap-fit ​​assembly, which includes: protrusions symmetrically arranged on both sides of the electricity meter; and elastic snaps arranged on both sides of the junction box and corresponding to the protrusions. The upper end of the elastic snaps is provided with a guide wedge surface. When the junction box slides along the T-shaped groove on the mounting bracket, the protrusions press the guide wedge surface to deform the elastic snaps until the elastic terminals on the junction box are precisely aligned with the terminals on the electricity meter. The elastic snaps then automatically reset and automatically engage with the protrusions.

[0013] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: 1. In this utility model, the electricity meter and junction box are separate structures. The modular design makes the inspection and maintenance of the electricity meter more convenient. When disassembling the electricity meter, it is not necessary to disconnect the power and then disassemble the lower wires one by one.

[0014] 2. In this utility model, the electricity meter and the junction box are connected by a snap-fit ​​assembly, and a reliable electrical connection is achieved through the spring terminals on the junction box. The installation and disassembly of the electricity meter and the junction box are both simple to operate.

[0015] 3. This utility model also includes a mounting bracket for installing an electricity meter. The electricity meter and the mounting bracket are connected by a mounting block and a limiting component to achieve quick installation and quick removal. The all-mechanical structure enables it to adapt to harsh environments and improve its service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a perspective view of the installation state of an energy meter that is easy to inspect and maintain, as proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of an energy meter that is easy to maintain, as proposed in this utility model.

[0019] Figure 3 This is a structural schematic diagram from another perspective of one embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the internal structure of the junction box in one embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures: 1. Electricity meter; 101. Mounting block; 102. Groove; 103. Terminal block; 2. Junction box; 201. Housing; 202. Adjusting bolt; 203. Wiring pipe; 204. Spring terminal; 205. Pressure plate; 206. Wire through hole; 3. Isolation assembly; 301. Isolation plate; 302. Conductive sheet; 4. Mounting bracket; 401. Elastic latch; 402. Return spring; 403. Mounting hole; 404. Slide groove; 405. Frame; 5. Snap-on assembly; 501. Elastic snap-on; 502. Protrusion. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] Example 1 like Figures 1-4 As shown, the present invention proposes an easy-to-maintain electricity meter, including an electricity meter 1 and a junction box 2. The bottom of the electricity meter 1 is provided with multiple terminals 103. The junction box 2 is located at the lower end of the electricity meter 1 and is detachably connected to the electricity meter 1. The junction box 2 is provided with multiple independent wiring units for fixing external wires. Each wiring unit is provided with a spring terminal 204. The inner contact end of the spring terminal 204 is located inside the junction box 2 and is electrically connected to the wire. The outer contact end of the spring terminal 204 extends to the outside of the junction box 2 and forms a detachable electrical connection with the terminals 103. The spring terminal 204 is provided with an elastic element to provide stable contact pressure. In the existing technology, single-phase electricity meters usually have four terminals: live wire input and output, and neutral wire input and output. When repairing the meter, it is necessary to first disconnect the power and then disconnect multiple wires one by one before the electricity meter can be completely disassembled. The operation steps are cumbersome and inconvenient. In this utility model, the electricity meter 1 and its junction box 2 are of a separate structure. The spring terminal 204 on the junction box 2 and the terminal post 103 on the electricity meter 1 form a separable electrical connection, making it easier to separate the electricity meter from the junction box.

[0024] Furthermore, the junction box 2 is provided with an isolation component 3 for easy maintenance. The isolation component 3 includes an isolation plate 301 and a conductive sheet 302. The isolation plate 301 is arranged along the length of the junction box 2 and is slidably connected to the junction box 2. Both sides of the isolation plate 301 are insulating surfaces. There are two conductive sheets 302, and both conductive sheets 302 are arranged on the side of the isolation plate 301 facing the junction box 2. The two conductive sheets 302 are electrically isolated from each other. Each conductive sheet 302 corresponds to the outer contact end of two spring terminals 204. The contact end of the conductive sheet 302 and the spring terminal 204 are provided with a guide wedge structure. When the electricity meter 1 needs to be repaired, the sliding isolation plate 301 gradually approaches the spring terminal 204. The wedge structure at one end of the conductive plate 302 squeezes the spring terminal 204, causing the spring terminal 204 to separate from the terminal 103 on the electricity meter 1. At the same time, the conductive plate 302 on the isolation plate 301 bridges the corresponding spring terminal 204, so that the neutral wire and the live wire of the electricity meter 1 form a short circuit circuit, and the electricity meter 1 can be removed for repair.

[0025] Furthermore, the bottom of the junction box 2 is provided with multiple wire through holes 206 corresponding to the independent wiring units. The multiple independent wiring units are arranged linearly at intervals in the box. Each wiring unit includes an insulating wiring housing 201 that is axially aligned with the wire through hole 206. The housing 201 is provided with a wiring tube 203 for connecting wires. The inner contact end of the spring terminal 204 is electrically connected to the wiring tube 203. The external wire passes through the wire through hole 206 and connects to the wiring tube 203 inside the housing 201. Then, it is connected to the terminal 103 on the energy meter 1 through the wiring tube 203 and the spring terminal 204 thereon. Furthermore, the wiring conduit 203 is provided with a wire fixing mechanism, which includes: a pressure plate 205, which slides in cooperation with the inner wall of the wiring conduit 203, and has anti-slip texture on its surface facing the wire; and an adjusting bolt 202, which passes through the threaded hole of the wiring housing 201 and is rotatably connected to the pressure plate 205. The operating end of rotating the adjusting bolt 202 drives the pressure plate 205 to move along the direction perpendicular to the wire, thereby pressing or releasing the wire. When installing the wire, the external wire is inserted into the wiring conduit 203 through the wire through hole 206. Rotating the adjusting bolt 202 causes the pressure plate 205 to move along the direction perpendicular to the wire and gradually approach the wire, pressing the wire tightly inside the wiring conduit 203 to form a reliable connection. The working surface of the pressure plate 205 has anti-slip texture to make the connection between the wire and the wiring conduit 203 more stable.

[0026] In this utility model, the electricity meter 1 and the lower junction box 2 are separate structures. When the electricity meter 1 needs to be repaired, push the isolation plate 301 on the junction box 2 to slide the isolation plate 301 to the repair position. The side of the isolation plate 301 near the terminal 103 of the electricity meter 1 is an insulating surface. The side of the isolation plate 301 near the junction box 2 is provided with two conductive plates 302. The conductive plates 302 simultaneously bridge the corresponding spring terminals 204, so that the neutral wire and the live wire of the electricity meter 1 form a short circuit circuit, which can disconnect the connection between the electricity meter 1 and the junction box 2. Then, the electricity meter 1 can be separated from the junction box 2 and disassembled for repair.

[0027] Example 2 like Figures 1-4 As shown, the present invention proposes an easy-to-maintain electricity meter. Compared with the first embodiment, this embodiment also includes a mounting bracket 4 for fixing the electricity meter 1 in the meter box. The mounting bracket 4 includes a frame body 405 and a limiting component. The frame body 405 is provided with at least two mounting holes 403. The back of the electricity meter 1 is provided with a mounting block 101 with a groove 102. The mounting block 101 corresponds to the mounting hole 403 on the frame body 405. The limiting component is set on the frame 405, including an elastic locking pin 401 and a return spring 402. The lower end of the elastic locking pin 401 is provided with a wedge-shaped guide surface. The elastic locking pin 401 is slidably connected to the frame 405. The frame 405 is provided with a fixing block. The return spring 402 connects the tail end of the locking pin and the fixing block. The locking pin and the groove 102 form a detachable locking engagement. During installation, the mounting bracket 4 is first installed inside the corresponding meter box. The mounting block 101 of the electricity meter 1 is then inserted into the corresponding mounting hole 403. The mounting block 101 presses against the wedge-shaped guide surface on the locking pin, causing the locking pin to be pushed upward. When the mounting block 101 is fully in place, the reset spring 402 pushes the locking pin into the groove 102 to fix the electricity meter 1. The automatic alignment during installation significantly improves the installation efficiency.

[0028] Furthermore, the mounting bracket 4 is provided with a T-shaped slide groove 404 along the vertical direction, and the junction box 2 is provided with a slider that slides in cooperation with the T-shaped slide groove 404. The length of the slide groove 404 is greater than the length of the slider. The slider slides along the T-shaped slide groove 404 to realize the vertical displacement adjustment of the junction box 2 on the mounting bracket 4. Furthermore, the junction box 2 is connected to the electricity meter 1 via a snap-fit ​​assembly 5. The snap-fit ​​assembly 5 includes a protrusion 502 and an elastic snap 501. There are two protrusions 502, which are respectively located on both sides of the electricity meter 1. The elastic snaps 501 correspond one-to-one with the protrusions 502 and are located on both sides of the junction box 2. The upper end of the elastic snap 501 is provided with a guide wedge surface. When the junction box 2 slides upward along the T-shaped slide groove 404 on the mounting bracket 4, the protrusions 502 press the guide wedge surface to deform the elastic snap 501 until the elastic terminal on the junction box 2 is precisely aligned with the terminal post 103 on the electricity meter 1. The elastic snap 501 automatically resets and automatically completes the snap-fit ​​with the protrusions 502.

[0029] In this embodiment, during installation, the mounting bracket 4 is first fixed inside the meter box with screws. The slider on the junction box 2 is embedded into the T-shaped groove 404 on the bracket 405. The mounting block 101 on the energy meter 1 is aligned and inserted into the mounting hole 403 on the bracket 405. The upper limit assembly of the bracket 405 cooperates with the mounting block 101 to fix the energy meter 1 on the bracket 405. The energy meter 1 is located above the junction box 2. The junction box 2 is pushed upward, and the protrusion 502 squeezes the buckle to deform it. When the elastic terminal is accurately aligned and attached to the terminal post 103... When the timing is right, the elastic buckle 501 automatically resets and locks onto the upper end of the protrusion 502 to complete the installation. When the energy meter 1 needs maintenance, the isolation component 3 is pushed to the maintenance position to disconnect the energy meter 1 from the wiring unit on the junction box 2. The elastic buckle 501 is opened to deform it, and the junction box 2 is slid down away from the energy meter 1. Then, the elastic pin 401 on the frame 405 is pushed away from the groove 102 of the mounting block 101, so that the energy meter 1 can be removed from the mounting frame 4 for maintenance or replacement. The disassembly and installation of the energy meter 1 is simple.

[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An energy meter that is easy to maintain, characterized in that, include: An electricity meter (1) has multiple terminals (103) at its bottom. Junction box (2) is detachably connected to the bottom of the main body of the energy meter (1); Multiple independent wiring units are located inside the junction box (2) for fixing external wires; The spring terminal (204) assembly includes an inner contact end and an outer contact end. The inner contact end is located inside the junction box (2) and is electrically connected to the wire. The outer contact end extends to the outside of the junction box (2) and forms a separable electrical connection with the terminal block (103).

2. The easily maintainable electricity meter according to claim 1, characterized in that, The junction box (2) is also provided with an isolation component (3) for easy maintenance, the isolation component (3) including: The isolation plate (301) is arranged along the length of the junction box (2) and is slidably connected to the junction box (2), with insulating surfaces on both sides; Two conductive plates (302) are disposed on the side of the isolation plate (301) facing the inside of the junction box (2), and the two conductive plates (302) are electrically isolated from each other; each set of conductive plates (302) corresponds to the outer contact end of two spring terminals (204), and a guide wedge structure is provided on one end of the conductive plate (302) near the spring terminal (204); When the isolation plate (301) slides to the maintenance position, the conductive sheet (302) simultaneously bridges the corresponding spring terminal (204), so that the neutral wire and the live wire of the power meter (1) form a short circuit circuit.

3. The easily maintainable electricity meter according to claim 2, characterized in that, The bottom of the junction box (2) is provided with multiple wire through holes (206) corresponding to the independent wiring units. The multiple independent wiring units are arranged linearly at intervals in the box. Each wiring unit includes an insulating wiring shell (201) that is axially aligned with the wire through hole (206).

4. The easily maintainable electricity meter according to claim 3, characterized in that, The housing (201) is provided with a connecting pipe (203) for connecting wires, and the inner contact end of the spring terminal (204) is electrically connected to the connecting pipe (203).

5. The easily maintainable electricity meter according to claim 4, characterized in that, The wiring conduit (203) is provided with a wire fixing mechanism, which includes: The pressure plate (205) slides in contact with the inner wall of the conduit (203), and its surface facing the wire has anti-slip texture; The adjusting bolt (202) passes through the threaded hole of the wiring housing (201) and is rotatably connected to the pressure plate (205). The operating end of the rotating adjusting bolt (202) drives the pressure plate (205) to move along the direction perpendicular to the conductor, thereby tightening or releasing the conductor.

6. The easily maintainable electricity meter according to claim 5, characterized in that, It also includes a mounting bracket (4) for fixing the electricity meter (1) inside the meter box, the mounting bracket (4) comprising: The frame (405) is provided with at least two mounting holes (403); The limiting component is provided on the frame (405) and includes an elastic pin (401) with a wedge-shaped guide surface at its head and a return spring (402) that abuts against the tail of the pin. The back of the energy meter (1) is provided with a mounting block (101) with a groove (102). The limiting component and the groove (102) form a detachable locking engagement.

7. The easily maintainable electricity meter according to claim 6, characterized in that, The mounting bracket (4) is provided with a T-shaped groove (404) in the vertical direction. The junction box (2) is provided with a slider that slides in cooperation with the T-shaped groove (404). The length of the groove (404) is greater than the length of the slider. The slider slides along the T-shaped groove (404) to realize the vertical displacement adjustment of the junction box (2) on the mounting bracket (4).

8. The easily maintainable electricity meter according to claim 7, characterized in that, The junction box (2) is connected to the electricity meter (1) via a snap-fit ​​assembly (5), the snap-fit ​​assembly (5) comprising: The protrusions (502) are symmetrically arranged on both sides of the electricity meter (1); The elastic buckle (501) is located on both sides of the junction box (2) and corresponds to the protrusion (502). The upper end of the elastic buckle (501) is provided with a guide wedge surface. When the junction box (2) slides along the T-shaped slide groove (404) on the mounting bracket (4), the protrusion (502) squeezes the guide wedge surface to deform the elastic buckle (501) until the elastic terminal on the junction box (2) is precisely aligned with the terminal (103) on the power meter (1). The elastic buckle (501) automatically resets and automatically completes the fastening with the protrusion (502).

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