Electric energy meter with module fixing structure

Abstract

An electric energy meter with a module fixing structure comprises a lower shell and an upper shell installed on the lower shell, and is characterized in that the upper shell is provided with an installation groove allowing the module fixing structure to be inserted therein, and the module fixing structure comprises a cover body capable of covering the installation groove and an installation frame used for installing a circuit board. The mounting frame is fixed on the lower surface of the cover body, and when the module fixing structure is inserted into the mounting groove, the circuit board is electrically connected with a corresponding component in the electric energy meter. Compared with the prior art, the module fixing structure has the advantages that the circuit board is mounted on the module fixing structure through the mounting rack, and the module fixing structure can be independently inserted in the mounting groove of the upper shell of the electric energy meter, so that the module fixing structure can be mounted or dismounted without dismounting the electric energy meter, and the module fixing structure is convenient for replacing the circuit board and is convenient to mount and dismount. And the module fixing structure can be installed on the electric energy meter or detached from the electric energy meter more quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy meters, in particular to an electric energy meter with a module fixing structure. Background Art

[0002] The electric energy meter is an instrument used to measure electric energy, also known as an electric meter, a fire meter, or a kilowatt-hour meter. At present, the electric energy meter is increasingly used in industrial production and life due to its small size, high accuracy, good reliability, and easy installation. The electric energy meter is measured through various functional modules. Therefore, the circuit board needs to be installed in the module fixed structure corresponding to the electric energy meter to meet the requirements of various functions of the electric energy meter.

[0003] The existing electric energy meter with a module fixed structure is shown in the Chinese invention of "A multi-module simple assembly dual-circuit DC electric energy meter" with patent number CN202310796117.4 (application publication number CN117110674A). The electric energy meter includes a bottom shell, a front shell and two groups of sampling modules. Each sampling module includes a sampling circuit board and a module bracket detachably connected to the bottom shell. The sampling circuit board is carried on the module bracket. The sampling module can be independently inserted into the bottom shell. The disassembly and assembly process is simple and easy to operate, without the need for desoldering, saving a lot of operating procedures and labor costs.

[0004] Although the above-mentioned module fixing structure can be independently inserted into the bottom shell, a surface shell needs to be installed on the bottom shell, that is, the module fixing structure is installed between the bottom shell and the surface shell of the electric energy meter, and the functional module is encapsulated in the shell of the electric energy meter. Therefore, when installing or disassembling the module fixing structure of the electric energy meter, the electric energy meter still needs to be disassembled to install or disassemble and replace the functional module, so that the module fixing structure is not convenient for manufacturers to install and disassemble. In addition, the existing electric energy meter requires more parts to fix the circuit board, the structure is relatively complex, the utilization rate of parts is low, and the production efficiency is low. For this reason, improvements are made to the existing electric energy meter with a module fixing structure. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide an electric energy meter with a module fixing structure which is easy to install and disassemble in view of the above-mentioned existing technical status.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is as follows: the electric energy meter with a module fixing structure comprises a lower shell and an upper shell installed on the lower shell, and is characterized in that: the upper shell is provided with a mounting groove for inserting the module fixing structure, the module fixing structure comprises a cover body capable of covering the mounting groove and a mounting frame for installing a circuit board, the mounting frame is fixed to the lower surface of the cover body, and when the module fixing structure is inserted in the mounting groove, the circuit board is electrically connected to corresponding components in the electric energy meter.

[0007] As a solution of the mounting frame, preferably, the mounting frame includes two brackets arranged opposite to each other, and the two sides of the circuit board can be respectively mounted in the two brackets. The circuit board is generally rectangular, and the two brackets fix the two sides of the circuit board so that the circuit board is mounted on the mounting frame.

[0008] In order to enable the circuit board to be installed on the bracket, preferably, the bracket includes a first vertical plate and a second vertical plate connected vertically, the first vertical plate is an elastic member, a limiting column and a first stopper are provided on the first vertical plate, the limiting column and the first stopper are both arranged perpendicular to the first vertical plate, a through hole corresponding to the limiting column is provided on the circuit board, when the two sides of the circuit board are respectively installed on the two brackets, the limiting column can be inserted into the through hole, the first stopper is arranged at the free end of the first vertical plate, and the first stopper can prevent the circuit board from falling off. The first vertical plate and the second vertical plate connected vertically are L-shaped or T-shaped, and the first vertical plate is an elastic member, when the circuit board is installed in the installation space formed by the two brackets, the first vertical plate is swung to insert the limiting column on the first vertical plate into the through hole of the circuit board, so that the circuit board is installed on the bracket, and the first stopper abuts against the circuit board, so that the first stopper can prevent the circuit board from falling off in the direction away from the cover plate.

[0009] Furthermore, a second stopper is provided on the second vertical plate, the second stopper is perpendicular to the second vertical plate, a guiding inclined surface for installing the circuit board is provided on the second stopper, and the second stopper can prevent the through hole of the circuit board from being separated from the limiting column. The circuit board is inserted between the first vertical plate and the second vertical plate along the guiding inclined surface, so that the limiting column and the second stopper cooperate to clamp the circuit board.

[0010] In order to enable the circuit board to be installed on the bracket in the correct orientation, preferably, a positioning portion is provided on the lower surface of the cover body, the positioning portion is arranged between the two brackets, and a limiting space is formed between the positioning portion and one of the brackets. When the two sides of the circuit board are respectively installed in the two brackets, the positioning portion can abut against the circuit board, and the components on the circuit board can be snapped into the limiting space. Specific components on the circuit board are snapped into the limiting space, so that the circuit board can only be installed on the bracket in the correct orientation, so that the circuit board can be electrically connected to the corresponding components in the electric energy meter.

[0011] Furthermore, the lower surface of the cover body is provided with two positioning parts, the two positioning parts are arranged opposite to each other and staggered, and the two positioning parts respectively form limiting spaces with the corresponding brackets, and when the two sides of the circuit board are respectively installed in the two brackets, the two positioning parts can clamp the circuit board. Since the two positioning parts are arranged opposite to each other and staggered, the two positioning parts are provided with two limiting spaces for inserting specific components, so that the two positioning parts can not only limit the correct orientation of the circuit board installation, but also clamp the circuit board.

[0012] As another solution of the mounting frame, preferably, the mounting frame includes a fastener and a third stopper, wherein the fastener is an elastic member, and the fastener can be fastened on the surface of the circuit board, and the third stopper is arranged on the opposite side of the fastener, and the third stopper is used to prevent the circuit board from escaping from the fastener, and the third stopper and the fastener form a slot for installing the circuit board. The circuit board is inserted into the slot, the fastener fastens the circuit board, and the third stopper prevents the circuit board from escaping from the fastener, so that the circuit board is installed in the mounting frame.

[0013] In order to prevent the circuit board from moving laterally in the mounting frame, preferably, the mounting frame further includes two fourth stops that are arranged opposite to each other, the distance between the two fourth stops being equal to the length of the circuit board, and when the circuit board is mounted on the mounting frame, the fourth stops can prevent the circuit board from moving laterally. The third stop and the fourth stop are both T-shaped, so that the third stop and the fourth stop have a larger contact area with the circuit board, and the effect of preventing the circuit board from moving or falling off is better.

[0014] In order to enable the mounting frame to more stably mount the circuit board, preferably, the mounting frame includes a plurality of the fasteners, and a support portion is further provided between the plurality of fasteners, and the support portion is used to support the surface of the circuit board. When the length of the circuit board is long, the spacing between the plurality of fasteners is large, and the circuit board between the plurality of fasteners is supported by the support portion, so that the circuit board is more stably mounted in the mounting frame.

[0015] In order to enable the circuit board to be installed on the mounting frame in the correct orientation, preferably, a limiting space is formed between the support portion and the adjacent fastener, and when the circuit board is installed on the mounting frame, the support portion can support the surface of the circuit board, and the components on the circuit board can be snapped into the limiting space. Specific components on the circuit board are snapped into the limiting space, so that the circuit board can only be installed on the mounting frame in the correct orientation, so that the circuit board can be electrically connected to the corresponding components in the electric energy meter.

[0016] Compared with the prior art, the advantages of the present invention are: the circuit board is installed on the module fixing structure through the mounting frame, and the module fixing structure can be independently inserted in the mounting groove of the upper shell of the electric energy meter, so that the module fixing structure can be installed or removed without disassembling the electric energy meter. Therefore, the module fixing structure is not only convenient for replacing the circuit board, but also enables the module fixing structure to be installed on or removed from the electric energy meter more quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0018] Figure 2 This is an exploded schematic diagram of the module fixing structure in Example 1 of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the module fixing structure and the circuit board in Example 1 of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the module fixing structure in Embodiment 1 of the present utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the circuit board in Embodiment 1 of the present utility model;

[0022] Figure 6 This is an exploded schematic diagram of the module fixing structure in Example 2 of the present utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the module fixing structure and the circuit board in Example 2 of the utility model;

[0024] Figure 8 This is a structural schematic diagram of the module fixing structure in Example 2 of the present utility model. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 5 Shown is Example 1 of the utility model.

[0027] like Figure 1 and Figure 2 As shown, the electric energy meter of this embodiment includes a lower shell 1 and an upper shell 2 installed on the lower shell 1, and the upper shell 2 is provided with a mounting groove 21 for inserting the module fixing structure 3, and the module fixing structure 3 includes a cover body 4 that can cover the mounting groove 21 and a mounting frame 5 for installing the circuit board 6, and the mounting frame 5 is fixed to the lower surface of the cover body 4. When the module fixing structure 3 is inserted into the mounting groove 21, the circuit board 6 is electrically connected to the corresponding components in the electric energy meter. In addition, a buckle is provided on the cover body 4, and a slot corresponding to the buckle is provided at the mounting groove 21 of the upper shell 2. When the module fixing structure 3 is inserted into the mounting groove 21, the buckle is inserted into the slot.

[0028] like Figures 3 to 5 As shown, the mounting frame 5 of this embodiment includes two brackets 51 arranged opposite to each other, and the circuit board 6 is rectangular, and the two sides of the circuit board 6 can be respectively installed in the two brackets 51. Among them, the bracket 51 includes a first vertical plate 52 and a second vertical plate 53 connected vertically, and the first vertical plate 52 is an elastic member. The first vertical plate 52 is provided with a limiting column 521 and a first stopper 522, and the limiting column 521 and the first stopper 522 are both arranged perpendicular to the first vertical plate 52. The circuit board 6 is provided with a through hole 61 corresponding to the limiting column 521. When the two sides of the circuit board 6 are respectively installed in the two brackets 51, the limiting column 521 can be inserted into the through hole 61, and the first stopper 522 is arranged at the free end of the first vertical plate 52, and the first stopper 522 can prevent the circuit board 6 from falling off. A second stopper 531 is provided on the second vertical plate 53, and the second stopper 531 is perpendicular to the second vertical plate 53. A guiding inclined surface for installing the circuit board 6 is provided on the second stopper 531. The second stopper 531 can prevent the through hole 61 of the circuit board 6 from escaping from the limiting column 521. The circuit board 6 is inserted between the first vertical plate 52 and the second vertical plate 53 along the guiding inclined surface, so that the limiting column 521 cooperates with the second stopper 531 to clamp the circuit board 6.

[0029] In addition, two positioning portions 7 are provided on the lower surface of the cover body 4, and the positioning portions 7 are arranged between the two brackets 51. The two positioning portions 7 are arranged opposite to each other and staggered, and the two positioning portions 7 respectively form limiting spaces with the corresponding brackets 51. When the two sides of the circuit board 6 are respectively installed in the two brackets 51, the positioning portions 7 can resist the circuit board 6, the components on the circuit board 6 can be inserted into the limiting space, and the two positioning portions 7 can clamp the circuit board 6.

[0030] The workflow of this embodiment is:

[0031] A. When the manufacturer needs to install the module fixing structure 3, the circuit board 6 is oriented correctly, the first vertical plate 52 is swung, and the circuit board 6 is inserted between the two positioning parts 7, so that the specific components on the circuit board 6 are stuck in the limiting space, and then the first vertical plate 52 is loosened, so that the limiting column 521 on the first vertical plate 52 is inserted into the through hole 61 of the circuit board 6, and the second stopper 531 blocks the circuit board 6, and the limiting column 6 and the second stopper 531 cooperate to clamp the circuit board 6, and at the same time, the first stopper 522 abuts against the circuit board 6, so that the first stopper 522 can prevent the circuit board 6 from falling off in the direction away from the cover plate 4, so that the two sides of the circuit board 6 are respectively installed in the two brackets 51, and then the module fixing structure 3 with the circuit board 6 installed is installed in the installation groove 21, and the buckle is inserted into the card groove, and finally the module fixing structure 3 is fixedly connected with the upper shell 2 through the lead seal to prevent non-manufacturer people from disassembling the module fixing structure 3;

[0032] B. When the manufacturer needs to disassemble the module fixing structure 3, first remove the lead seal on the module fixing structure 3, then remove the cover body 4 from the installation slot 21, move the buckle out of the slot, then swing the first vertical plate 52 to disengage the limit column 521 from the through hole 61 on the circuit board 6, the first stopper 522 is not in contact with the circuit board 6, and finally pull the circuit board 6 out in the direction away from the cover plate 4, thereby completing the disassembly of the module fixing structure 3.

[0033] like Figures 6 to 8 The example 2 of the utility model is shown in FIG. The difference between the example 2 and the example 1 is that the structure of the mounting frame is different.

[0034] like Figures 6 to 8 As shown, the mounting frame 5 includes four fasteners 54 and two third stops 55. The fasteners 54 are elastic members that can be fastened on the surface of the circuit board 6. The third stops 55 are arranged on the opposite side of the fasteners 54. The third stops 55 are used to prevent the circuit board 6 from escaping from the fasteners 54. The third stops 55 and the fasteners 54 form a slot for installing the circuit board 6. The mounting frame 5 also includes two fourth stops 56 that are arranged opposite to each other. The distance between the two fourth stops 56 is equal to the length of the circuit board 6. When the circuit board 6 is installed on the mounting frame 5, the fourth stops 56 can prevent the circuit board 6 from moving laterally.

[0035] In addition, a support portion 8 is provided between the four fasteners 54, and the support portion 8 is used to support the surface of the circuit board 6. A limiting space is formed between the support portion 8 and the adjacent fasteners 54. When the circuit board 6 is installed on the mounting frame 5, the support portion 8 can support the surface of the circuit board 6, and the components on the circuit board 6 can be inserted into the limiting space.

[0036] The workflow of this embodiment is:

[0037] A. When the manufacturer needs to install the module fixing structure 3, the circuit board 6 is oriented correctly and aligned between the two fourth blocks 56. The circuit board 6 is inserted into the slot along the fastener 54. The fastener 54 is buckled on the surface of the circuit board 6. The third block 55 and the fourth block 56 are both in contact with the circuit board 6. The support portion 8 supports the surface of the circuit board 6 so that the circuit board 6 is stably installed in the bracket 51. Then, the module fixing structure 3 with the circuit board 6 installed is installed in the installation slot 21. The buckle is snapped into the slot. Finally, the module fixing structure 3 is fixedly connected to the upper shell 2 through the lead seal to prevent non-manufacturer people from disassembling the module fixing structure 3.

[0038] B. When the manufacturer needs to disassemble the module fixing structure 3, the lead seal on the module fixing structure 3 is first removed, and then the cover body 4 is removed from the installation groove 21, the buckle is moved out of the slot, and then the fastener 54 is manually swung so that the fastener 54 is not in contact with the circuit board 6, so that the circuit board 6 is pulled out in the direction away from the cover plate 4, thereby completing the disassembly of the module fixing structure 3.

Claims

1. An electric energy meter with a module fixing structure, comprising a lower shell (1) and an upper shell (2) mounted on the lower shell (1), characterized in that: The upper shell (2) is provided with a mounting groove (21) for inserting the module fixing structure (3); the module fixing structure (3) comprises a cover body (4) capable of covering the mounting groove (21) and a mounting frame (5) for installing a circuit board (6); the mounting frame (5) is fixed to the lower surface of the cover body (4); when the module fixing structure (3) is inserted into the mounting groove (21), the circuit board (6) is electrically connected to corresponding components in the electric energy meter; the mounting frame (5) comprises two brackets (51) arranged opposite to each other; two sides of the circuit board (6) can be respectively installed in the two brackets (51); the bracket (51) comprises a first vertical plate (52) and a vertically connected first vertical plate (52). A second vertical plate (53), wherein the first vertical plate (52) is an elastic member, a limiting column (521) and a first stopper (522) are provided on the first vertical plate (52), wherein the limiting column (521) and the first stopper (522) are both arranged perpendicular to the first vertical plate (52), and a through hole (61) corresponding to the limiting column (521) is provided on the circuit board (6), and when the two sides of the circuit board (6) are respectively mounted on the two brackets (51), the limiting column (521) can be inserted into the through hole (61), and the first stopper (522) is arranged at the free end of the first vertical plate (52), and the first stopper (522) can prevent the circuit board (6) from falling off.

2. The electric energy meter with a module fixing structure according to claim 1, characterized in that: A second stopper (531) is provided on the second vertical plate (53), the second stopper (531) is perpendicular to the second vertical plate (53), a guiding inclined surface for installing the circuit board (6) is provided on the second stopper (531), and the second stopper (531) can prevent the through hole (61) of the circuit board (6) from being separated from the limiting column (521).

3. The electric energy meter with a module fixing structure according to claim 1 or 2, characterized in that: A positioning portion (7) is provided on the lower surface of the cover body (4), and the positioning portion (7) is arranged between the two brackets (51). A limiting space is formed between the positioning portion (7) and one of the brackets (51). When the two sides of the circuit board (6) are respectively installed in the two brackets (51), the positioning portion (7) can abut against the circuit board (6), and the components on the circuit board (6) can be inserted into the limiting space.

4. The electric energy meter with a module fixing structure according to claim 3, characterized in that: The lower surface of the cover body (4) is provided with two positioning portions (7), the two positioning portions (7) are arranged opposite to each other and staggered, the two positioning portions (7) respectively form a limiting space with the corresponding brackets (51), and when the two sides of the circuit board (6) are respectively installed in the two brackets (51), the two positioning portions (7) can clamp the circuit board (6).

5. The electric energy meter with a module fixing structure according to claim 1, characterized in that: The mounting frame (5) comprises a fastener (54) and a third stopper (55); the fastener (54) is an elastic member, and the fastener (54) can be fastened on the surface of the circuit board (6); the third stopper (55) is arranged on the opposite side of the fastener (54); the third stopper (55) is used to prevent the circuit board (6) from escaping from the fastener (54); the third stopper (55) and the fastener (54) form a slot for mounting the circuit board (6).

6. The electric energy meter with a module fixing structure according to claim 5, characterized in that: The mounting frame (5) further comprises two fourth stoppers (56) arranged opposite to each other, the distance between the two fourth stoppers (56) being equal to the length of the circuit board (6), and when the circuit board (6) is mounted on the mounting frame (5), the fourth stoppers (56) are capable of preventing the circuit board (6) from moving laterally.

7. The electric energy meter with a module fixing structure according to claim 6, characterized in that: The mounting frame (5) comprises a plurality of fasteners (54), and a supporting portion (8) is provided between the plurality of fasteners (54), wherein the supporting portion (8) is used to support the surface of the circuit board (6).

8. The electric energy meter with a module fixing structure according to claim 7, characterized in that: A limiting space is formed between the support portion (8) and the adjacent fastener (54); when the circuit board (6) is mounted on the mounting frame (5), the support portion (8) can support the surface of the circuit board (6), and components on the circuit board (6) can be snapped into the limiting space.

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