Design-simplified circular electric energy meter

Abstract

The invention relates to the technical field of electric energy meters, in particular to a simplified-design circular electric energy meter which comprises a base, a support, an inner container and an upper cover, electrical components are assembled in the base, the support covers the electrical components and is fixedly connected with the base, and a plurality of rib plates are arranged on the edge of the support and extend upwards. First buckles are arranged at different height positions of the inner side surfaces of the plurality of rib plates, the plurality of first buckles at the same height position are used for clamping the same PCB, the plurality of first buckles at different height positions are used for clamping different PCBs, the inner container covers the PCBs and is fixed with the plurality of rib plates, and the upper cover covers the inner container and is connected with the base. Reasonable layout in the electric energy meter can be realized, the space utilization rate in the meter is improved, and the assembly process of the circular electric energy meter is more simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of electric energy meters, and in particular to a circular electric energy meter with a simplified design. Background Art

[0002] An electric energy meter is an instrument used to measure electrical energy. Also known as an watt-hour meter, heat meter, or kilowatt-hour meter, it refers to an instrument that measures various electrical quantities. In existing technology, the bracket of most circular electric energy meters is fixed to the base via screws or clips. Multiple PCBs are mounted on the bracket from bottom to top, and the inner container is pressed onto the top PCB and fixed to the bracket with screws. Finally, the upper box assembly is closed. This design results in a relatively large overall size of the bracket and inner container. After assembly, the bracket area and the inner container area are relatively independent and closed, resulting in a relatively complex internal structure of the electric energy meter and scattered fixing points for various components.

[0003] The invention with publication number CN201710575254.X discloses an ANSI standard round meter-compatible single-phase and three-phase relay solution electric energy meter structure, comprising a base, an inner cover disposed on the base, an outer cover disposed outside the inner cover, a first circuit board and a second circuit board disposed within a cavity formed by the inner cover and the base, a support structure disposed on the base, the first and second circuit boards spaced apart and fixedly connected to the support structure. Although the meter's height can be increased to provide ample internal space for easier assembly, the structure between the multiple circuit boards is not compact enough, and the overall size of the support structure and inner cover is relatively large, resulting in a relatively dispersed internal structure and low space utilization. Summary of the Invention

[0004] The purpose of the present invention is to solve the defects in the prior art and provide a circular electric energy meter with a simplified design, so as to achieve a reasonable internal layout of the circular electric energy meter, high space utilization and simple assembly process.

[0005] To achieve the above-mentioned objectives, the present invention provides a circular electric energy meter with a simplified design, comprising a base, a bracket, an inner tank and an upper cover, wherein the base is used to assemble electrical components, the bracket cover is arranged on the electrical components and is fixedly connected to the base, the edge of the bracket is provided with multiple ribs, and the multiple ribs are extended upward, and first clips are provided at different height positions on the inner side surfaces of the multiple ribs, the multiple first clips at the same height position are used to clamp the same PCB, and the multiple first clips at different height positions are used to clamp different PCBs, the inner tank cover is arranged on the PCB and fixed to the multiple ribs, and the upper cover is arranged outside the inner tank and connected to the base.

[0006] In the present invention, by providing a plurality of ribs on the edge of the bracket and using the first clips provided on the ribs to clamp and fix the PCB, the size of the PCB can be maximized within the effective space; and a plurality of first clips are integrated on each rib, so that a single rib can fix multiple PCBs at the same time, reducing the overall size of the bracket and the inner tank. At the same time, since the plurality of first clips are integrated, the problem of scattered clip positions is avoided, making the assembly of the PCB more convenient.

[0007] Optionally, the outer side surfaces of the plurality of ribs are provided with a second clip, the bottom edge of the inner liner is downwardly formed with a plurality of relatively spaced protrusions, and the plurality of protrusions are provided with clip holes, and the plurality of clip holes are snap-fitted with the plurality of second clips in a one-to-one corresponding manner.

[0008] In the present invention, by providing a second clip and a clip hole that engages with the second clip, the inner liner can be easily assembled on the bracket, simplifying the assembly process; since the rib plate and the second clip extend upward from the bracket, and the protrusion and the clip hole protrude downward from the bottom of the inner liner, after the second clip and the clip hole are assembled, an open space is formed between the inner liner and the bracket, and air can circulate inside and outside the inner liner to avoid heat accumulation.

[0009] Optionally, a limit buckle is provided on the outer side of the rib corresponding to below the second buckle, with the top of the limit buckle being used to abut against the bottom surface of the inner container for limiting position. In the present invention, the limit buckle is provided to limit the further downward movement of the inner container after the second buckle is engaged with the buckle hole, thereby preventing the inner container from further downward movement after the second buckle is disengaged from the buckle hole and damaging the PCB.

[0010] Optionally, the plurality of first clips on the rib plate are staggered with each other along the circumferential direction, and a first notch is opened on the edges of the plurality of PCBs corresponding to the rib plate, and a clipping portion is formed in the first notch, and the clipping portion is used to be connected and fixed with the corresponding first clip.

[0011] In the present invention, since the rib plate needs to provide fixation for multiple PCBs, the multiple PCBs need to be able to be fixedly installed at the corresponding first clips for fixation. At the same time, it is also necessary to ensure that the first clips used to fix other PCBs will not affect the installation position of the PCB. By designing multiple first clips to be laterally staggered with each other, and providing first notches at positions corresponding to the multiple first clips on each PCB, the multiple PCBs can be smoothly installed into the rib plate. At the same time, the snap-fitting portion in the first notch that protrudes towards the corresponding first clip can fix the PCB on the corresponding first clip, avoiding position interference and ensuring that the multiple PCBs can be smoothly installed in place.

[0012] Optionally, multiple groups of welding plugs are arranged at intervals on the top edge of the bracket, and multiple welding sockets are opened on multiple PCBs. Each group of welding plugs is welded to the welding sockets of the same PCB, and different groups of welding plugs are welded to the welding sockets of different PCBs.

[0013] In the present invention, multiple groups of welding plugs are provided to be welded and connected to multiple PCBs respectively, so that the wires connected from the electrical components are inserted from bottom to top and connected to the welding plugs. Then, the electrical components and the PCBs are electrically connected by welding the PCBs and the welding plugs. This not only allows for convenient implementation of functions such as transformer sampling and relay switching, but also avoids the problem of wiring confusion caused by arranging the wires connecting the electrical components and the PCBs inside the bracket, while also improving the stability of the installation of multiple PCBs. By arranging multiple welding plugs at the top edge of the bracket, the size of the PCB can be maximized within the effective space, while maintaining the integrity of the internal structure of the PCB, and reducing the impact of solder joints on the layout of PCB circuits and the layout of other components.

[0014] Optionally, a height difference is set between the multiple groups of welding plugs, the welding plug with a lower height is welded to the welding socket of the PCB below, a second notch is opened on the PCB below corresponding to the welding socket of the PCB above, and the welding plug with a higher height is passed through the second notch of the PCB below and welded to the welding socket of the PCB above.

[0015] In the present invention, when the PCB is moved downward for assembly, the taller welding plug passes through the second notch on the PCB, and the shorter welding plug docks with the welding socket of the PCB and can be fixed by welding. By providing the second notch on the PCB, it is ensured that the lower PCB can be smoothly installed in place. When the upper PCB is installed, the welding socket on the PCB can dock with the taller welding plug and can be fixed by welding. Thus, multiple welding plugs provided on the edge of the bracket can simultaneously be welded and fixed to multiple PCBs, making the internal structural layout of the circular electric energy meter more reasonable.

[0016] Optionally, the welding plug includes a base, a mounting block and a plug body, the base is formed on the edge of the bracket and extends upward, a bearing space is formed on the top of the base, the mounting block is arranged in the bearing space, the upper end of the plug body can be welded to the corresponding welding socket, and the lower end can be electrically connected to the corresponding electrical component through a wire.

[0017] In the present invention, the ends of the wires leading from the electrical components are equipped with plugs that plug into the mounting block. Pins extend from the top of the plugs, which connect to the wires. Once the plugs are inserted into the mounting block, the pins can be inserted upward into soldering holes and soldered to the PCB, thereby achieving electrical connectivity between the electrical components and the PCB. During assembly, once the PCB is in place, the PCB's assembly guides ensure that the pins of the plugs inserted into the mounting block align with the soldering holes. This eliminates the need for separate soldering of the plugs during soldering, simplifying the assembly process, creating a cleaner and more rational spatial layout, and preventing interference between the wires within the bracket.

[0018] Optionally, a plurality of positioning posts are arranged at intervals on the top surface of the bracket, and the diameters of the plurality of positioning posts are gradually reduced from bottom to top or are stepped and reduced in sections. A plurality of positioning holes are provided on the plurality of PCBs, and the apertures of the plurality of positioning holes corresponding to the same vertical direction on the plurality of PCBs are gradually reduced from bottom to top, so that the plurality of PCBs can be clamped at different height positions of the positioning posts.

[0019] In the present invention, a plurality of positioning posts are provided to position the installation of the PCB, and the diameter of the positioning posts is set to a tapered structure or a segmented stepped structure from bottom to top, so that the column with a larger diameter at the bottom of the positioning post corresponds to the PCB with a larger positioning hole diameter below, and the column with a smaller diameter at the top of the positioning post corresponds to the PCB with a smaller positioning hole diameter above, thereby achieving the simultaneous positioning of one positioning post with multiple positioning holes.

[0020] Optionally, the base is made of PC or PC modified material or PET or PBT. In the present invention, the base made of PC or PC modified material or PET or PBT has good heat resistance, wear resistance and mechanical properties, and can meet the use requirements of the base working environment.

[0021] Optionally, the bracket, the inner liner, and the upper cover are all made of PC or PC modified materials. In the present invention, PC material has good heat resistance, wear resistance, mechanical properties, and high transparency, while PC modified materials have better strength, rigidity, and heat resistance, which can meet the use requirements of the bracket, inner liner, and upper cover.

[0022] Beneficial effects:

[0023] 1. The present invention integrates multiple first clips corresponding to each other at different height positions of the rib plate to achieve clip-on fixation of multiple PCBs, thereby fixing the multiple PCBs on the rib plate at intervals. This not only simplifies the assembly process and improves assembly efficiency, but also saves installation space and simplifies the installation and fixing structure, thereby improving space utilization within the circular electric energy meter.

[0024] 2. The present invention arranges multiple ribs at the edge of the bracket. Since the PCB is fixed in the space enclosed by the multiple ribs, the size of the PCB can be maximized within the effective space, while maintaining the integrity of the internal structure of the PCB, and reducing the impact of factors such as clips and solder joints on the PCB circuit layout and component placement.

[0025] 3. The present invention places the inner shell cover on the PCB and fixedly connects it to multiple ribs, thereby reducing the vertical size of the inner shell. This allows the inner shell to have reduced design dimensions, weight, and manufacturing materials while still maintaining the necessary functions of fixation, positioning, and the necessary functions, thereby reducing production costs. At the same time, the present invention avoids the inner shell being directly covered outside the bracket, thereby forming an open space inside the circular electricity meter, which is conducive to the free flow of heat within the meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the exploded structure of a simplified circular electric energy meter disclosed in the present invention;

[0028] Figure 2 This is a schematic diagram of the internal structure of a simplified circular electric energy meter disclosed in the present invention;

[0029] Figure 3 This is a schematic diagram of the inner structure of a circular electric energy meter with an easy-to-understand simplified design disclosed in the present invention.

[0030] Reference numerals:

[0031] 1. Base; 2. Bracket; 21. Rib; 22. First snap; 23. Second snap; 24. Limit snap; 25. Welding plug; 251. Base; 252. Mounting block; 253. Plug body; 26. Positioning column; 3. Inner liner; 31. Raised portion; 32. Snap hole; 4. Upper cover; 5. Electrical component; 6. PCB; 61. First notch; 62. Welding jack; 63. Positioning hole; 64. Second notch.

[0032] The realization of the objectives, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0036] See also Figure 1 and Figure 2 According to an embodiment of the present invention, a circular electric energy meter with a simplified design includes a base 1, a bracket 2, an inner tank 3 and an upper cover 4. The base 1 is used to assemble electrical components 5. The bracket 2 is covered on the electrical components 5 and fixedly connected to the base 1. The edge of the bracket 2 is provided with multiple ribs 21, and multiple ribs 21 are extended upward. First clips 22 are provided at different height positions on the inner sides of the multiple ribs 21. Multiple first clips 22 at the same height position are used to clamp the same PCB 6, and multiple first clips 22 at different height positions are used to clamp different PCBs 6. The inner tank 3 is covered on the PCB 6 and fixed with multiple ribs 21. The upper cover 4 is covered outside the inner tank 3 and connected to the base 1.

[0037] In the present invention, by arranging multiple ribs 21 on the edge of the bracket 2 and using the first clips 22 provided on the ribs 21 to clamp and fix the PCB6, the size of the PCB6 can be maximized within the effective space; and multiple first clips 22 are integrated on each rib 21, so that a single rib 21 can fix multiple PCB6 at the same time, reducing the overall size of the bracket 2 and the inner tank 3. At the same time, since the multiple first clips 22 are integrated, the problem of scattered clip positions is avoided, making the assembly of the PCB6 more convenient.

[0038] Specifically, the inner liner 3 is a thin shell structure. Compared with the cylindrical structure in the prior art, it can not only reduce production costs and reduce material expenditures for making the inner liner 3, but also realize the lightweight design of the inner liner 3 structure. In addition, while ensuring that the inner liner 3 has a fixed, positioning structure and necessary functions, the shell structure enables an open space to be formed inside the circular electricity meter, which is more conducive to the free flow of heat inside the meter.

[0039] Specifically, the electrical components 5 include relays and current transformers, which are fixedly assembled in the base 1 and belong to the control module and measurement module of the circular electric energy meter respectively. The bracket 2 covers the relays and current transformers, and the side of the bracket 2 is designed to be hollow, which can enable the heat generated by the relays and current transformers to circulate in the circular electric energy meter, prevent heat accumulation in the bracket 2 from causing local overheating, and extend the service life.

[0040] Specifically, there are three ribs 21, which are evenly spaced along the edge of the bracket 2. The provision of three ribs 21 not only ensures sufficient fixed support for the PCB 6, but also avoids the problems of low space utilization and complicated assembly caused by providing a larger number of ribs 21. Of course, the present invention is not limited to this, and the number of ribs 21 may be greater than three.

[0041] Specifically, each rib 21 is provided with three first clips 22. By providing three first clips 22, each first clip 22 is correspondingly connected to a PCB 6, which can reasonably utilize the space within the circular electricity meter and reduce the complexity of assembly. When the number of first clips 22 provided on the rib 21 is smaller, the number of PCB 6s assembled therewith is also smaller, which not only affects the design and function of the circular electricity meter, but also results in more empty space within the circular electricity meter, resulting in lower space utilization. When the number of first clips 22 provided on the rib 21 is larger, more gaps need to be opened on the PCB 6 to avoid multiple first clips 22, which affects the structural design and function of the PCB 6 and requires the design of a larger rib 21 to install a larger number of first clips 22, which increases production costs. When a PCB 6 is assembled on each first clip 22, the large number of first clips 22 will greatly increase the assembly precision requirements of the PCB 6, making PCB 6 assembly failures more likely to occur. Of course, the present invention is not limited thereto, and the number of the first buckles 22 provided on each rib 21 may be more or less than three.

[0042] Specifically, the bracket 2 is fixed to the base 1 by a snap fastener or screws. The connection method between the bracket 2 and the base 1 is not specifically limited, and other methods of fixing the bracket 2 to the base 1 are also possible. The number of brackets 2 can be one or more. When the number of brackets 2 is multiple, the multiple brackets 2 can be detachably stacked and connected in an upper and lower manner, and a larger number of PCBs 6 can be installed and fixed according to actual needs to meet usage requirements.

[0043] See also Figure 2 and Figure 3 In some embodiments of the present invention, the outer side surfaces of the plurality of ribs 21 are each provided with a second clip 23, the bottom edge of the inner liner 3 is downwardly formed with a plurality of relatively spaced protrusions 31, and the plurality of protrusions 31 are each provided with a clip hole 32, and the plurality of clip holes 32 are snap-fitted with the plurality of second clips 23 in a one-to-one corresponding manner.

[0044] In the present invention, by providing a second clip 23 and a clip hole 32 that is engaged with the second clip, the inner liner 3 can be easily assembled on the bracket 2, simplifying the assembly process; since the rib 21 and the second clip 23 extend upward from the bracket 2, and the protrusion 31 and the clip hole 32 protrude downward from the bottom of the inner liner 3, after the second clip 23 and the clip hole 32 are assembled, an open space is formed between the inner liner 3 and the bracket 2, and air can circulate inside and outside the inner liner 3 to avoid heat accumulation.

[0045] See also Figure 1 and Figure 2 In some embodiments of the present invention, a limit buckle 24 is provided on the outer side of the rib 21, corresponding to the lower portion of the second buckle 23. The top of the limit buckle 24 is configured to abut against the bottom surface of the inner liner 3 to limit the position. In the present invention, the limit buckle 24 is provided to limit the downward movement of the inner liner 3 after the second buckle 23 engages the buckle hole 32, thereby preventing the inner liner 3 from further downward movement after the second buckle 23 is released from the buckle hole 32 and damaging the PCB 6.

[0046] See also Figure 2 In some embodiments of the present invention, the plurality of first clips 22 on the rib plate 21 are staggered with each other along the circumferential direction, and the edges of the plurality of PCBs 6 corresponding to the rib plate 21 are provided with first notches 61, and the first notches 61 are each formed with a clipping portion, which is used to be connected and fixed with the corresponding first clip 22.

[0047] In the present invention, since the rib plate 21 needs to provide fixation for multiple PCB6, the multiple PCB6 need to be able to be fixedly installed at the corresponding first clips 22 for fixation, and at the same time, it is also necessary to ensure that the first clips 22 used to fix other PCB6 will not affect the installation position of the PCB6. By designing multiple first clips 22 to be laterally staggered with each other, and opening first notches 61 at positions corresponding to multiple first clips 22 on each PCB6, multiple PCB6 can be smoothly installed into the rib plate 21. At the same time, the clamping portion in the first notch 61 protruding toward the corresponding first clip 22 can fix the PCB6 on the corresponding first clip 22, avoiding position interference and ensuring that multiple PCB6 can be smoothly installed in place.

[0048] See also Figure 2 In some embodiments of the present invention, multiple groups of welding plugs 25 are arranged at intervals on the top edge of the bracket 2, and multiple welding sockets 62 are opened on the multiple PCBs 6. Each group of welding plugs 25 is welded to the welding sockets 62 of the same PCB 6, and different groups of welding plugs 25 are welded to the welding sockets 62 of different PCBs 6.

[0049] In the present invention, multiple groups of welding plugs 25 are provided to be welded and connected to multiple PCBs 6 respectively, so that the wires connected from the electrical components 5 are inserted from bottom to top and connected to the welding plugs 25. Then, the electrical components 5 and the PCB are electrically connected by welding the PCB 6 and the welding plugs 25. This not only allows for convenient implementation of functions such as mutual inductance and relay on / off, but also avoids the problem of wiring confusion caused by setting the wires connecting the electrical components 5 and the PCB 6 inside the bracket 2. At the same time, it also improves the stability of the installation of multiple PCBs 6. By arranging multiple welding plugs 25 at the top edge of the bracket 2, the size of the PCB 6 can be maximized within the effective space, while maintaining the integrity of the internal structure of the PCB 6, and reducing the influence of the solder joints on the circuit layout of the PCB 6 and the layout of other components.

[0050] See also Figure 1 and Figure 2 In some embodiments of the present invention, a height difference is set between the multiple groups of welding plugs 25, the welding plugs 25 with lower height are welded to the welding sockets 62 of the PCB 6 below, and a second notch 64 is opened on the PCB 6 below corresponding to the welding sockets 62 of the PCB 6 above. The welding plugs 25 with higher height are passed through the second notch 64 of the PCB 6 below and welded to the welding sockets 62 of the PCB 6 above.

[0051] In the present invention, when the PCB6 is moved downward for assembly, the higher welding plug 25 passes through the second notch 64 on the PCB6, and the lower welding plug 25 docks with the welding socket 62 of the PCB6 and can be welded and fixed. By providing the second notch 64 on the PCB6, it is ensured that the lower PCB6 can be smoothly installed in place. When the upper PCB6 is installed, the welding socket 62 on the PCB6 can dock with the higher welding plug 25 and can be welded and fixed, so that the multiple welding plugs 25 provided on the edge of the bracket 2 can simultaneously weld and fix the multiple PCB6, making the internal structural layout of the circular electric energy meter more reasonable.

[0052] See also Figure 2 In some embodiments of the present invention, the welding plug 25 includes a base 251, a mounting block 252 and a plug body 253. The base 251 is formed on the edge of the bracket 2 and extends upward. A carrying space is formed on the top of the base 251. The mounting block 252 is arranged in the carrying space. The upper end of the plug body 253 can be welded to the corresponding welding socket 62, and the lower end can be electrically connected to the corresponding electrical component 5 through a wire.

[0053] In the present invention, the ends of the wires extending from the electrical component 5 are provided with plugs that plug into the mounting block 252. Pins that connect to the wires extend from the top of the plugs. Once the plugs are inserted into the mounting block 252, the pins can be inserted upward into the soldering holes 62 and soldered to the PCB 6, thereby achieving electrical connection between the electrical component 5 and the PCB 6. During assembly, once the PCB 6 is in place, the assembly guides for the PCB 6 ensure that the pins of the plugs inserted into the mounting block 252 can be positioned and docked with the soldering holes 62. Therefore, there is no need to solder the plugs separately during the soldering process, simplifying the assembly process, creating a cleaner and more rational spatial layout, and preventing interference caused by the wires within the bracket 2.

[0054] See also Figure 2 In some embodiments of the present invention, a plurality of positioning posts 26 are further spaced apart on the top surface of the bracket 2. The diameters of the plurality of positioning posts 26 are gradually reduced from bottom to top or are stepped and reduced in sections. A plurality of positioning holes 63 are provided on the plurality of PCBs 6. The diameters of the plurality of positioning holes 63 corresponding to the same vertical direction on the plurality of PCBs 6 are gradually reduced from bottom to top, so that the plurality of PCBs 6 can be snapped into place at different heights of the positioning posts 26.

[0055] In the present invention, the installation of PCB6 is positioned by setting multiple positioning columns 26, and the diameter of the positioning column 26 is set to a tapered structure or a segmented stepped structure from bottom to top, so that the column with a larger diameter at the lower part of the positioning column 26 corresponds to the PCB6 with a larger aperture of the positioning hole 63 below, and the column with a smaller diameter at the upper part of the positioning column 26 corresponds to the PCB6 with a smaller aperture of the positioning hole 63 above, thereby realizing the simultaneous positioning of one positioning column 26 with multiple positioning holes 63.

[0056] In some embodiments of the present invention, the base 1 is made of PC or a modified PC material, PET, or PBT. In the present invention, the base 1 made of PC or a modified PC material, PET, or PBT has excellent heat resistance, wear resistance, and mechanical properties, and can meet the operating requirements of the base 1. Of course, the present invention is not limited to this, and other base materials that meet the operating requirements are also acceptable.

[0057] In some embodiments of the present invention, the bracket 2, the inner liner 3, and the upper cover 4 are all made of PC or a modified PC material. In the present invention, PC material has excellent heat resistance, wear resistance, mechanical properties, and high transparency. Modified PC materials have improved strength, rigidity, and heat resistance, meeting the requirements of the bracket 2, inner liner 3, and upper cover 4. Of course, the present invention is not limited to this, and bracket 2, inner liner 3, and upper cover 4 made of other materials that meet the requirements are also acceptable.

[0058] When assembling the circular electric energy meter of the present invention, the electrical component 5 is first fixed on the base 1, and then the bracket 2 is covered on the electrical component 5. The bottom of the bracket 2 is fixedly connected to the base 1. Since a plurality of positioning posts 26 are provided on the top of the bracket 2, a plurality of welding plugs 25 and a plurality of ribs 21 are provided on the top edge of the bracket 2, and a plurality of first clips 22 are integrated on the inner side surfaces of the ribs 21, when assembling the PCB 6 on the bracket 2, the plurality of positioning posts 26 are first matched with the plurality of positioning holes 63 on the PCB 6 one by one to realize the positioning of the installation position of the PCB 6. The first notch 61 on the PCB 6 can smoothly pass through the rib 21 and the plurality of first clips 22 above, and the clamping portion in the first notch 61 can align with the first at the bottom. The clips 22 are fixed in place. At the same time, the higher groups of welding plugs 25 are inserted into the second notches 64 on the PCB 6, and the lowest group of welding plugs 25 are matched with the welding sockets 62 on the PCB 6, and the PCB 6 can be welded and fixed to the bracket 2. Through the same operation, the multiple PCBs 6 are assembled and fixed to the bracket 2 from bottom to top, so that the multiple first clips 22 correspond to the multiple PCBs 6 one by one. Then, the inner shell 3 is placed on the upper PCB 6, and the multiple clip holes 32 on the inner shell 3 are correspondingly connected to the first clips 22 on the outer surfaces of the multiple ribs 21. Then, the upper cover 4 is placed on the inner shell 3, and the bottom of the upper cover 4 is fixedly connected to the base 1, thereby realizing the assembly of the circular electric energy meter. The present invention realizes a simplified design of the internal structure of the circular electric energy meter, improves space utilization, and adopts a modular vertical assembly from bottom to top. The process is relatively simple, easy to automate, and can improve assembly efficiency.

[0059] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's description and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A circular electric energy meter with simplified design, characterized in that: The invention comprises a base (1), a bracket (2), an inner container (3) and an upper cover (4); the base (1) is used for assembling an electrical component (5); the bracket (2) is arranged on the electrical component (5) and is fixedly connected to the base (1); a plurality of ribs (21) are provided on the edge of the bracket (2); the plurality of ribs (21) are extended upward; first clips (22) are provided at different height positions on the inner side surfaces of the plurality of ribs (21); the plurality of first clips (22) at the same height position are used to clip the same PCB (6); the plurality of first clips (22) at different height positions are used to clip different PCBs (6); the inner container (3) is arranged on the PCB (6) and is fixed to the plurality of ribs (21); the upper cover (4) is arranged outside the inner container (3) and is connected to the base (1).

2. A circular electric energy meter with a simplified design according to claim 1, characterized in that: The outer side surfaces of the plurality of ribs (21) are each provided with a second snap fastener (23), the bottom edge of the inner liner (3) is downwardly formed with a plurality of relatively spaced protrusions (31), the plurality of protrusions (31) are each provided with a snap fastener hole (32), and the plurality of snap fastener holes (32) are snap-fitted with the plurality of second snap fasteners (23) in a one-to-one corresponding manner.

3. A circular electric energy meter with a simplified design according to claim 2, characterized in that: A limiting buckle (24) is provided on the outer side surface of the rib plate (21) corresponding to the lower side of the second buckle (23), and the top of the limiting buckle (24) is used to abut against the bottom surface of the inner container (3) for limiting position.

4. A circular electric energy meter with a simplified design according to claim 1, characterized in that: The plurality of first clips (22) on the rib plate (21) are mutually staggered in the transverse direction, and the edges of the plurality of PCBs (6) corresponding to the rib plate (21) are each provided with a first notch (61), and a snap-fitting portion is formed in each of the first notches (61), and the snap-fitting portion is used for snapping and fixing with the corresponding first clip (22).

5. A circular electric energy meter with a simplified design according to claim 1, characterized in that: A plurality of groups of welding plugs (25) are arranged at intervals on the top edge of the bracket (2), and a plurality of welding sockets (62) are provided on the plurality of PCBs (6). Each group of welding plugs (25) is welded to the welding sockets (62) of the same PCB (6), and different groups of welding plugs (25) are welded to the welding sockets (62) of different PCBs (6).

6. A circular electric energy meter with a simplified design according to claim 5, characterized in that: A height difference is set between the multiple groups of welding plugs (25), the welding plugs (25) with a lower height are welded to the welding sockets (62) of the lower PCB (6), a second notch (64) is opened on the lower PCB (6) corresponding to the welding sockets (62) of the upper PCB (6), and the welding plugs (25) with a higher height are passed through the second notch (64) of the lower PCB (6) and welded to the welding sockets (62) of the upper PCB (6).

7. A circular electric energy meter with a simplified design according to claim 5, characterized in that: The welding plug (25) comprises a base (251), a mounting block (252) and a plug body (253); the base (251) is formed on the edge of the bracket (2) and extends upward; a bearing space is formed on the top of the base (251); the mounting block (252) is arranged in the bearing space; the plug body (253) is fixed to the top of the mounting block (252); the upper end of the plug body (253) can be welded to the corresponding welding socket (62); and the lower end can be electrically connected to the corresponding electrical component (5) through a wire.

8. A circular electric energy meter with a simplified design according to claim 1, characterized in that: The top surface of the bracket (2) is also provided with a plurality of positioning posts (26) at intervals, and the diameters of the plurality of positioning posts (26) are gradually reduced from bottom to top or are stepped and reduced in sections. The plurality of PCBs (6) are each provided with a plurality of positioning holes (63), and the diameters of the plurality of positioning holes (63) corresponding to the same vertical direction on the plurality of PCBs (6) are gradually reduced from bottom to top, so that the plurality of PCBs (6) can be clamped at different height positions of the positioning posts (26).

9. A circular electric energy meter of simplified design according to any one of claims 1 to 8, characterized in that: The base (1) is made of PC or PC modified material or PET or PBT.

10. A circular electric energy meter of simplified design according to any one of claims 1 to 8, characterized in that: The bracket (2), the inner container (3) and the upper cover (4) are all made of PC or PC modified material.

Images