Modular electric energy meter

Abstract

The utility model provides a modularized electric energy meter, which comprises a shell, a main board, a signal terminal module and a current terminal module, the main board, the signal terminal module and the current terminal module are arranged in the shell, the main board is detachably connected with the signal terminal module, and the signal terminal module is detachably connected with the current terminal module. A first positioning structure used for positioning the mainboard is arranged between the shell and the mainboard, a second positioning structure used for positioning the signal terminal module is arranged between the signal terminal module and the side wall of the shell, and a third positioning structure used for positioning the current terminal module is arranged between the current terminal module and the side wall of the shell. The modularized electric energy meter can overcome the defects that in the prior art, the current terminal and the signal terminal are integrally fixed on the shell of the electric energy meter, due to the fact that the operation space is limited during installation or maintenance, the operation difficulty is increased, the operation time is shortened, and the cost is reduced. And the operation efficiency is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, and specifically to a modular electricity meter. Background Technology

[0002] An electricity meter is used to measure and record the amount of electricity consumed by a household or business. It helps users understand their electricity usage and provides a basis for electricity bill calculation. During use, the high-voltage current on the user side of the electricity meter is connected through the current terminal. The current sampling circuit on the main board performs real-time measurement and signal conversion. The processed data is transmitted to the signal processing unit through the internal circuit of the main board. Finally, the standardized electrical parameter information is output to the external system through the signal terminal. In the existing technology, the current terminal and the signal terminal are fixed as a whole on the electricity meter housing. During installation or maintenance, operations can only be performed on the electricity meter housing. Due to the limited operating space, the operation difficulty is increased and the work efficiency is reduced. Furthermore, if any part of the current terminal or the signal terminal is damaged, the entire unit needs to be replaced, which increases maintenance costs. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the shortcomings of the prior art in which the current terminal and the signal terminal are fixed as a whole on the energy meter housing. During installation or maintenance, the operation can only be carried out on the energy meter housing. Due to the limited operating space, the operation difficulty is increased and the work efficiency is reduced. Therefore, this utility model provides a modular energy meter that is easy to disassemble and replace parts.

[0004] Therefore, this utility model provides a modular energy meter, including a housing and a main board, a signal terminal module, and a current terminal module disposed inside the housing. The main board and the signal terminal module are detachably connected, and the signal terminal module and the current terminal module are detachably connected, with the signal terminal module located between the main board and the current terminal module. A first positioning structure for positioning the main board is provided between the housing and the main board. A second positioning structure for positioning the signal terminal module is provided between the signal terminal module and the side wall of the housing. A third positioning structure for positioning the current terminal module is provided between the current terminal module and the side wall of the housing. A fourth positioning structure for positioning both the signal terminal module and the current terminal module is provided between them.

[0005] Furthermore: the first positioning structure includes an abutment plate disposed on one side of the housing or the motherboard and an abutment groove disposed on the other side that can be adapted to the abutment plate.

[0006] Furthermore: the third positioning structure includes a snap-fit ​​strip disposed on one side of the current terminal module or the housing and a first snap-fit ​​groove disposed on the other side. The housing sidewall is also provided with a buckle that abuts against the current terminal module. The buckle has an elastic restoring force. The current terminal module is provided with an extension rib adapted to the buckle. The buckle has a positioning state that abuts against the extension rib and a disengaging state that separates from the extension rib.

[0007] Furthermore: the fastening strip is disposed on the side wall of the housing, and the first fastening groove is disposed on the side of the current terminal module opposite to the side wall of the housing.

[0008] Furthermore: the insertion structure between the lower end face of the current terminal module and the inner sidewall of the housing includes at least one extension strip disposed on one side of the current terminal module or the housing and an extension groove disposed on the other side and adapted to the extension strip.

[0009] Furthermore, the inner wall of the housing is also provided with at least one positioning rib for assisting in fixing the current terminal module, and the positioning rib can abut against the lower end face of the current terminal module.

[0010] Furthermore: the signal terminal module is provided with an extension plate that connects to the motherboard, and the extension plate is fastened to the motherboard with screws. The second positioning structure includes a second snap-fit ​​groove provided on both sides of the signal terminal module, and the second snap-fit ​​groove can be adapted to the snap-fit ​​strip.

[0011] Furthermore, the fourth positioning structure includes a snap-fit ​​block disposed on the signal terminal module or the current terminal module, and a snap-fit ​​groove disposed on the other side and adapted to the snap-fit ​​block.

[0012] Furthermore: the abutment plate is disposed on both sides of the side wall of the housing in the width direction, the abutment groove is disposed on both sides of the motherboard in the width direction, and a positioning clip is also disposed in the length direction of the housing, the positioning clip being provided with an opening for the motherboard to be inserted.

[0013] The technical solution of this utility model has the following advantages:

[0014] 1. This utility model provides a modular energy meter, in which a main board, a signal terminal module, and a current terminal module are arranged inside the casing. These three are independent parts. During installation, the current terminal module can be fixed to the casing first using a third positioning structure. Then, the two sides of the signal terminal module are connected and fixed to the casing using a second positioning structure. At the same time, the signal terminal module and the current terminal module are snapped together using a fourth positioning structure, fixing the two sides of the signal terminal module and the position connected to the current terminal module. Finally, the position between the main board and the casing is fixed using a first positioning structure. When inspecting or installing wires, any part that needs to be replaced can be quickly disassembled for individual installation or replacement. Furthermore, quick installation can be achieved during assembly, effectively improving installation efficiency and reducing installation difficulty.

[0015] 2. The modular energy meter provided by this utility model has multiple abutment plates that can be injection molded into the housing to effectively fix the position of the main board. Then, abutment grooves that match the abutment plates are cut into the main board. The number of abutment plates is the same as the number of abutment grooves. The side of the main board is fixed by the cooperation of the abutment plates and abutment grooves, and its lower end is fixed to the signal terminal module. In this way, the position of the main board can be fixed effectively and quickly. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This diagram shows the positional relationship between the housing, the motherboard, the current terminal module, and the signal terminal module.

[0018] Figure 2 This is a schematic diagram of the connection structure between the motherboard and the casing;

[0019] Figure 3 This is a schematic diagram of the connection structure between the housing and the current terminal module.

[0020] Figure 4 This diagram shows the positional relationship between the motherboard, current terminal module, and signal terminal module.

[0021] Figure 5 This is a schematic diagram of the structure of the internal extension strip and positioning rib of the shell;

[0022] Figure 6 This is a cross-sectional structural diagram showing the relationship between the housing, the motherboard, the current terminal module, and the signal terminal module.

[0023] Figure 7 This is a schematic diagram of the connection structure between the signal terminal module and the motherboard.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Housing; 11. Mainboard; 12. Positioning clip; 13. Opening; 2. Signal terminal module; 21. Extension plate; 3. Current terminal module; 4. First positioning structure; 41. Abutting plate; 42. Abutting groove; 5. Second positioning structure; 51. Second snap-fit ​​groove; 6. Third positioning structure; 61. Snap-fit ​​strip; 62. First snap-fit ​​groove; 7. Fourth positioning structure; 71. Snap-fit ​​block; 72. Snap-fit ​​groove; 8. Snap-fit; 81. Extension rib; 9. Insertion structure; 91. Extension strip; 92. Extension groove; 93. Positioning rib. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] Example

[0031] This embodiment provides a modular energy meter, including a housing 1 and a main board 11, a signal terminal module 2, and a current terminal module 3 disposed inside the housing 1. The main board 11 and the signal terminal module 2 are detachably connected, and the signal terminal module 2 and the current terminal module 3 are detachably connected. The signal terminal module 2 is located between the main board 11 and the current terminal module 3. A first positioning structure 4 for positioning the main board 11 is provided between the housing 1 and the main board 11. A second positioning structure 5 for positioning the signal terminal module 2 is provided between the signal terminal module 2 and the side wall of the housing 1. A third positioning structure 6 for positioning the current terminal module 3 is provided between the current terminal module 3 and the side wall of the housing 1. A fourth positioning structure 7 for positioning the signal terminal module 2 and the current terminal module 3 is provided between them.

[0032] The specific improvements mentioned above are as follows: Figure 1 As shown, the housing 1 contains a main board 11, a signal terminal module 2, and a current terminal module 3, all of which are independent components. During installation, the current terminal module 3 can be fixed to the housing 1 first using the third positioning structure 6. Then, the two sides of the signal terminal module 2 can be connected and fixed to the housing 1 using the second positioning structure 5. At the same time, the signal terminal module 2 and the current terminal module 3 can be snapped together using the fourth positioning structure 7, fixing the two sides of the signal terminal module 2 and the position where it is connected to the current terminal module 3. Finally, the position between the main board 11 and the housing 1 can be fixed using the first positioning structure 4. When inspecting or installing wires, any component can be quickly disassembled for individual installation or replacement. Quick installation is also possible during assembly, effectively improving installation efficiency and reducing installation difficulty. In this embodiment, the circuit settings on the main board can be customized by those skilled in the art according to customer needs and product models.

[0033] Based on the above embodiments: the first positioning structure 4 includes an abutment plate 41 disposed on one of the housing 1 or the main board 11 and an abutment groove 42 disposed on the other and adapted to the abutment plate 41.

[0034] The specific improvements mentioned above are as follows: Figure 2 As shown, in order to effectively fix the position of the motherboard 11, multiple abutment plates 41 can be injection molded on the housing 1. Then, abutment grooves 42 that are compatible with the abutment plates 41 are cut on the motherboard 11. The number of abutment plates 41 is the same as the number of abutment grooves 42. The side of the motherboard 11 is fixed by the cooperation of the abutment plates 41 and the abutment grooves 42, and its lower end is fixed to the signal terminal module 2. In this way, the position of the motherboard 11 can be fixed effectively and quickly.

[0035] Based on the above embodiments: the third positioning structure 6 includes a fastening strip 61 disposed on one side of the current terminal module 3 or the housing 1 and a first fastening groove 62 disposed on the other side. The side wall of the housing 1 is also provided with a buckle 8 that abuts against the current terminal module 3. The buckle 8 has an elastic restoring force. The current terminal module 3 is provided with an extension rib 81 that is adapted to the buckle 8. The buckle 8 has a positioning state that abuts against the extension rib 81 and a disengaging state that is separated from the extension rib 81.

[0036] Based on the above embodiments: the fastening strip 61 is disposed on the side wall of the housing 1, and the first fastening groove 62 is disposed on the side of the current terminal module 3 opposite to the side wall of the housing 1.

[0037] The specific improvements mentioned above are as follows: Figure 3 As shown, the third positioning structure 6 includes a snap-fit ​​block disposed on the side wall of the housing 1. The first snap-fit ​​groove 62 is opened on both sides of the current terminal module 3. When installing the current terminal module 3, the operator first aligns the first snap-fit ​​groove 62 on one side with the snap-fit ​​block, and then naturally lowers the other side. The first snap-fit ​​groove 62 on the other side can then naturally align with the snap-fit ​​block. Finally, the current terminal module 3 can be pressed down by hand. At the same time as pressing down, the buckle 8 on the side wall of the housing 1 is squeezed by the current terminal module 3 and deforms towards the side away from the current terminal module 3. When the current terminal is pressed into place, the buckle 8 loses the force exerted on it by the current terminal module 3 and releases elastic potential energy. The buckle 8 will abut against the extension rib 81, thereby achieving dual positioning between the current terminal module 3 and the housing 1 and preventing displacement of the current terminal.

[0038] Based on the above embodiments: the insertion structure 9 between the lower end face of the current terminal module 3 and the inner side wall of the housing 1 includes at least one extension strip 91 disposed on one side of the current terminal module 3 or the housing 1 and an extension groove 92 disposed on the other side and adapted to the extension strip 91.

[0039] The specific improvements mentioned above are as follows: Figures 4-6 As shown, in order to effectively fix the connection between the bottom of the current terminal module 3 and the housing 1, a plug-in structure 9 is provided between the current terminal module 3 and the housing 1. The plug-in structure 9 includes an extension strip 91 provided on the housing 1 and an extension groove 92 provided on the current terminal module 3. When the first snap-fit ​​groove 62 is aligned with the snap-fit ​​block and the current terminal module 3 is naturally lowered, the extension strip 91 and the extension groove 92 can naturally fit together. In this way, the left side and bottom positions of the current terminal module 3 and the housing 1 can be connected and fixed to the housing 1, preventing the current terminal module 3 from shaking during transportation or when subjected to external vibration.

[0040] Based on the above embodiments: the inner wall of the housing 1 is also provided with at least one positioning rib 93 for fixing the auxiliary current terminal module 3, and the positioning rib 93 can abut against the lower end face of the current terminal module 3.

[0041] The specific improvements mentioned above are as follows: Figure 6 As shown, a number of positioning ribs 93 are provided on the inner wall of the housing 1, and a clearance groove is provided below the current terminal module 3 to avoid the positioning ribs 93. By setting the clearance groove, not only can some materials be saved, but the positioning ribs 93 can also abut against the clearance groove to effectively fix the current terminal module 3.

[0042] Based on the above embodiments: the signal terminal module 2 is provided with an extension plate 21 connected to the motherboard 11, and the extension plate 21 and the motherboard 11 are fastened together with screws. The second positioning structure 5 includes a second snap-fit ​​groove 51 provided on both sides of the signal terminal module 2, and the second snap-fit ​​groove 51 can be adapted to the snap-fit ​​strip 61.

[0043] The specific improvements mentioned above are as follows: Figure 7 As shown, after the current terminal module 3 is installed, the signal terminal module 2 can be installed. The first snap-fit ​​groove 62 and the second snap-fit ​​groove 51 are both snapped with the snap-fit ​​strip 61, so that during installation, the signal terminal module 2 and the through hole in the current terminal module 3 for the wires to pass through can be aligned, so that the wires can pass through smoothly.

[0044] Based on the above embodiments: the fourth positioning structure 7 includes a snap-fit ​​block 71 disposed on the signal terminal module 2 or the current terminal module 3 and a snap-fit ​​groove 72 disposed on the other and adapted to the snap-fit ​​block 71.

[0045] The specific improvements mentioned above are as follows: Figure 6 As shown, the fourth positioning structure 7 is set between the signal terminal module 2 and the current terminal module 3. During installation, the current terminal module 3 is first installed on the housing 1, and then the snap-fit ​​groove 72 below the signal terminal module 2 is connected to the snap-fit ​​block 71 above the current terminal module 3. The rear end of the current terminal module 3 is also provided with a support rib to support the current terminal module 3. After the signal terminal module 2 and the current terminal module 3 are installed, their upper ends are connected to the main board 11 with fastening screws.

[0046] Based on the above embodiments: the abutment plate 41 is disposed on both sides of the side wall of the housing 1 in the width direction, the abutment groove 42 is disposed on both sides of the main board 11 in the width direction, and the housing 1 is also provided with a positioning clip 12 in the length direction, and the positioning clip 12 is provided with an opening 13 for the main board 11 to be inserted.

[0047] The specific improvements mentioned above are as follows: Figure 2As shown, in order to effectively fix the position of the motherboard 11, a positioning structure is provided around the motherboard 11. The abutment plate 41 is provided on both sides of the side wall of the housing 1 in the width direction. The housing 1 is also provided with a positioning clip 12 in the length direction. The positioning clip 12 is provided with an opening 13 for the motherboard 11 to be inserted. Through the setting of the positioning clip 12 and the opening 13, the motherboard 11 can be quickly installed and its position can be effectively fixed.

[0048] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A modular energy meter, characterized in that: The device includes a housing (1) and a motherboard (11), a signal terminal module (2), and a current terminal module (3) disposed inside the housing (1). The motherboard (11) and the signal terminal module (2) are detachably connected, and the signal terminal module (2) and the current terminal module (3) are detachably connected. The signal terminal module (2) is located between the motherboard (11) and the current terminal module (3). A first positioning structure (4) for positioning the motherboard (11) is provided between the housing (1) and the motherboard (11). A second positioning structure (5) for positioning the signal terminal module (2) is provided between the signal terminal module (2) and the side wall of the housing (1). A third positioning structure (6) for positioning the current terminal module (3) is provided between the current terminal module (3) and the side wall of the housing (1). A fourth positioning structure (7) for positioning the signal terminal module (2) and the current terminal module (3) is provided between them.

2. A modular energy meter according to claim 1, characterized in that: The first positioning structure (4) includes an abutment plate (41) disposed on one of the housing (1) or the main board (11) and an abutment groove (42) disposed on the other and adapted to the abutment plate (41).

3. A modular energy meter according to claim 1, characterized in that: The third positioning structure (6) includes a snap-fit ​​strip (61) disposed on one side of the current terminal module (3) or the housing (1) and a first snap-fit ​​groove (62) disposed on the other side. The housing (1) is also provided with a buckle (8) that abuts against the current terminal module (3). The buckle (8) has an elastic restoring force. The current terminal module (3) is provided with an extension rib (81) that is adapted to the buckle (8). The buckle (8) has a positioning state that abuts against the extension rib (81) and a disengaging state that is separated from the extension rib (81).

4. A modular energy meter according to claim 3, characterized in that: The fastening strip (61) is disposed on the side wall of the housing (1), and the first fastening groove (62) is disposed on the side of the current terminal module (3) opposite to the side wall of the housing (1).

5. A modular energy meter according to claim 4, characterized in that: The insertion structure (9) between the lower end face of the current terminal module (3) and the inner side wall of the housing (1) includes at least one extension strip (91) disposed on one of the current terminal module (3) or the housing (1) and an extension groove (92) disposed on the other and adapted to the extension strip (91).

6. A modular energy meter according to claim 5, characterized in that: The inner wall of the housing (1) is also provided with at least one positioning rib (93) for fixing the auxiliary current terminal module (3), and the positioning rib (93) can abut against the lower end face of the current terminal module (3).

7. A modular energy meter according to any one of claims 3-6, characterized in that: The signal terminal module (2) is provided with an extension plate (21) connected to the motherboard (11). The extension plate (21) and the motherboard (11) are fastened together with screws. The second positioning structure (5) includes a second snap-fit ​​groove (51) provided on both sides of the signal terminal module (2). The second snap-fit ​​groove (51) can be adapted to the snap-fit ​​strip (61).

8. A modular energy meter according to claim 1, characterized in that: The fourth positioning structure (7) includes a snap-fit ​​block (71) disposed on the signal terminal module (2) or the current terminal module (3) and a snap-fit ​​groove (72) disposed on the other and adapted to the snap-fit ​​block (71).

9. A modular energy meter according to claim 2, characterized in that: The abutting plate (41) is disposed on both sides of the side wall of the housing (1) in the width direction, the abutting groove (42) is disposed on both sides of the main board (11) in the width direction, and the housing (1) is also provided with a positioning clip (12) in the length direction, and the positioning clip (12) is provided with an opening (13) for the main board (11) to be inserted.

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