Reliably assembled electric energy meter

Abstract

The utility model provides an electric energy meter reliable in assembly. The electric energy meter comprises a rear shell assembly, a control circuit board and a front shell assembly. The control circuit board is connected to the inner side of the rear shell assembly, and the front shell assembly is fixed to the front end of the rear shell assembly. Supporting blocks are arranged on the inner walls of the left side and the right side of the rear shell assembly, the left side and the right side of the control circuit board are supported at the front ends of the supporting blocks on the corresponding sides, a clamping hook is arranged at the front end of each supporting block, and the two clamping hooks are connected with the left side and the right side of the control circuit board in a matched and clamped mode so that the control circuit board can be fastened to the rear shell assembly; a slot is formed in the outer side wall of each clamping hook, insertion ribs are arranged on the inner walls of the left side and the right side of the front shell assembly, the rear end of each insertion rib is inserted into the slot in the clamping hook on the corresponding side, and the inner side wall of each insertion rib abuts against the inner side wall of the slot; according to the utility model, the reliable fixation of the control circuit board is realized, namely the failure of the fixed state of the control circuit board can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, and more specifically, to an electricity meter with reliable assembly. Background Technology

[0002] An electricity meter is a device used to measure electricity consumption. Currently, electricity meters on the market include a rear housing assembly, a control circuit board, and a front housing assembly. The control circuit board is connected to the inside of the rear housing assembly, and the front housing assembly is fixed to the front end of the rear housing assembly. Support blocks are provided on the inner walls of both sides of the rear housing assembly. The left and right sides of the control circuit board are supported on the front ends of the corresponding support blocks. Each support block has a hook at its front end. The two hooks engage with the left and right sides of the control circuit board to secure it to the rear housing assembly. However, in the above-mentioned electricity meter structure, when the electricity meter vibrates during transportation or installation, the sides of the control circuit board are prone to detaching from the hooks, which leads to the failure of the control circuit board's fixation. This indicates a drawback of poor reliability in fixing the control circuit board. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a reliable energy meter that achieves reliable fixation of the control circuit board, that is, to avoid failure of the fixed state of the control circuit board.

[0004] This utility model provides a reliable energy meter, including a rear housing assembly, a control circuit board, and a front housing assembly. The control circuit board is connected to the inner side of the rear housing assembly, and the front housing assembly is fixed to the front end of the rear housing assembly. Support blocks are provided on the inner walls of both the left and right sides of the rear housing assembly. The left and right sides of the control circuit board are supported on the front ends of the corresponding support blocks. Each support block has a hook at its front end, and the two hooks engage with the left and right sides of the control circuit board to secure the control circuit board to the rear housing assembly. A slot is provided on the outer wall of each hook, and insertion ribs are provided on the inner walls of both the left and right sides of the front housing assembly. The rear end of each insertion rib is inserted into the slot on the corresponding hook, and the inner wall of each insertion rib abuts against the inner wall of the slot.

[0005] By adopting the above structure, after the control circuit board and the rear shell assembly are assembled, and after the front shell assembly is fixed to the front end of the rear shell assembly, the rear end of each insert rib can be inserted into the slot on the corresponding side hook, and the inner side wall of each insert rib can abut against the inner side wall of the slot, thus achieving the limiting effect of the hook. Therefore, when the energy meter vibrates, it can also prevent the hook from expanding outward and causing the control circuit board to detach from the hook, thus achieving reliable fixation of the control circuit board and preventing the failure of the fixed state of the control circuit board.

[0006] In one possible implementation, each slot has an arc-shaped guide surface at its upper and lower edges. The guide surface is used to guide the rear end of the insert rib so that the rear end of the insert rib can be inserted into the slot. With this structure, under the action of the guide surface, when the front shell assembly and the rear shell assembly are assembled, the rear end of each insert rib can be guided to cooperate with the guide surface on the corresponding side so that the rear end of the insert rib can be inserted into the slot at the corresponding position and the inner wall of the insert rib abuts against the inner wall of the slot.

[0007] In one possible implementation, a rounded corner surface is provided on the inner wall of the rear end of each insert rib. The rounded corner surface is used to guide and cooperate with the inner sidewall of the slot so that the rear end of the insert rib can be inserted into the slot. With this structure, under the action of the rounded corner surface, when the front shell assembly and the rear shell assembly are assembled, the rounded corner surface can cooperate and guide with the inner sidewall of the slot so that the rear end of the insert rib can be inserted into the slot and the inner sidewall of the insert rib abuts against the inner sidewall of the slot.

[0008] In one possible implementation, two symmetrical support pillars are provided on the upper end of the rear housing assembly and on the rear inner wall of the rear housing assembly. The front end of each support pillar abuts against the rear end face of the control circuit board. Each support pillar has a positioning post with an outer diameter smaller than the support pillar at its front end. The control circuit board has positioning holes corresponding to each positioning post, and each positioning post is inserted into the positioning hole at its corresponding position. With this structure, after the control circuit board is assembled with the rear housing assembly, each support pillar can further support the control circuit board. At the same time, with the cooperation of the positioning pillar and the positioning hole, the control circuit board can be positioned and limited. This facilitates the assembly of the control circuit board with the rear housing assembly and improves the reliability and stability of the control circuit board after assembly with the rear housing assembly.

[0009] In one possible implementation, a connecting plate is provided between the outer side wall of each support column and the inner side wall of the rear shell assembly. Each connecting plate is integrally connected to the inner side wall of the rear shell assembly and the outer side wall of the corresponding support column. By adopting this structure, the connection strength between the support column and the rear shell assembly can be improved under the action of the connecting plate, so as to avoid the support column from breaking. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0011] Figure 2 This is an exploded three-dimensional structural diagram of the first part of this utility model;

[0012] Figure 3 for Figure 2A magnified structural diagram of point A in the middle;

[0013] Figure 4 This is an exploded perspective view of the second part of this utility model;

[0014] Figure 5 for Figure 4 A magnified structural diagram of point B in the middle;

[0015] Figure 6 A three-dimensional structural diagram of the control circuit board and the rear shell assembly after disassembly.

[0016] Figure 7 for Figure 6 A magnified structural diagram of point C. Detailed Implementation

[0017] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0018] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0019] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0020] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] See Figure 1-7As shown in the figure, this application discloses a reliable energy meter, including a rear shell assembly 1, a control circuit board 2, and a front shell assembly 3. The control circuit board 2 is connected to the inner side of the rear shell assembly 1, and the front shell assembly 3 is fixed to the front end of the rear shell assembly 1. Support blocks 11 are provided on the inner walls of both the left and right sides of the rear shell assembly 1. The left and right sides of the control circuit board 2 are supported on the front ends of the corresponding support blocks 11. Each support block 11 has a hook 111 at its front end. The two hooks 111 are respectively engaged with the left and right sides of the control circuit board 2 to fasten the control circuit board 2 to the rear shell assembly 1. Each hook 111 has a slot 112 on its outer side wall. Each front shell assembly 3 has a connecting rib 31 on its inner walls of both the left and right sides. The rear end of each connecting rib 31 is inserted into the slot 112 on the corresponding hook 111, and the inner side wall of each connecting rib 31 abuts against the inner side wall of the slot 112.

[0022] Each slot 112 has an arc-shaped guide surface 113 at its upper and lower edges. The guide surface 113 is used to guide the rear end of the insertion rib 31 so that the rear end of the insertion rib 31 can be inserted into the slot 112. With this structure, under the action of the guide surface, when the front shell assembly and the rear shell assembly are assembled, the rear end of each insertion rib can be guided to cooperate with the guide surface on the corresponding side so that the rear end of the insertion rib can be inserted into the slot at the corresponding position and the inner wall of the insertion rib abuts against the inner wall of the slot.

[0023] Each insert rib 31 has a rounded corner surface 311 on its inner wall at the rear end. The rounded corner surface 311 is used to guide the insert rib 31 into the slot 112 by engaging with the inner wall of the slot. With this structure, when the front shell assembly and the rear shell assembly are assembled, the rounded corner surface can engage with the inner wall of the slot to guide the insert rib into the slot and make the inner wall of the insert rib abut against the inner wall of the slot.

[0024] Two symmetrical support pillars 12 are provided on the upper end of the rear shell assembly 1 and on the rear inner wall of the rear shell assembly 1. The front end of each support pillar 12 abuts against the rear end face of the control circuit board 2. Each support pillar 12 has a positioning pillar 121 with an outer diameter smaller than the support pillar 12 at its front end. The control circuit board 2 has positioning holes 21 corresponding to each positioning pillar 121. Each positioning pillar 121 is inserted into the positioning hole 21 at the corresponding position. With this structure, after the control circuit board is assembled with the rear shell assembly, each support pillar can further support the control circuit board. At the same time, with the cooperation of the positioning pillar and the positioning hole, the control circuit board can be positioned and limited. This facilitates the assembly of the control circuit board with the rear shell assembly and improves the reliability and stability of the control circuit board after assembly with the rear shell assembly.

[0025] A connecting plate 122 is provided between the outer side wall of each support column 12 and the inner side wall of the rear shell assembly 1. Each connecting plate 122 is integrally connected to the inner side wall of the rear shell assembly 1 and the outer side wall of the corresponding support column 12. By adopting this structure, the connection strength between the support column and the rear shell assembly can be improved under the action of the connecting plate, so as to avoid the support column from breaking.

[0026] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A reliable energy meter, comprising a rear housing assembly (1), a control circuit board (2), and a front housing assembly (3); the control circuit board (2) is connected to the inner side of the rear housing assembly (1), and the front housing assembly (3) is fixed to the front end of the rear housing assembly (1); support blocks (11) are provided on the inner walls of both the left and right sides of the rear housing assembly (1), and the left and right sides of the control circuit board (2) are supported on the front ends of the corresponding support blocks (11), and each support block (11) has a hook (111) at its front end, and the two hooks (111) respectively engage with the left and right sides of the control circuit board (2) to secure the control circuit board (2) to the rear housing assembly (1); characterized in that: Each of the hooks (111) has a slot (112) on its outer side wall, and the front shell assembly (3) has a connecting rib (31) on its left and right inner sides. The rear end of each connecting rib (31) is inserted into the slot (112) on the hook (111) on the corresponding side, and the inner side wall of each connecting rib (31) abuts against the inner side wall of the slot (112).

2. The reliable energy meter according to claim 1, characterized in that: Each of the slots (112) has an arc-shaped guide surface (113) at its upper and lower edges. The guide surface (113) is used to guide the rear end of the insertion rib (31) so that the rear end of the insertion rib (31) can be inserted into the slot (112).

3. The reliable energy meter according to claim 1 or 2, characterized in that: Each of the insert ribs (31) has a rounded corner surface (311) on the inner wall of its rear end. The rounded corner surface (311) is used to cooperate with the inner wall of the slot (112) for guidance so that the rear end of the insert rib (31) can be inserted into the slot (112).

4. The reliable energy meter according to claim 1, characterized in that: Two symmetrical support columns (12) are provided on the upper end of the rear shell assembly (1) and on the rear inner wall of the rear shell assembly (1). The front end of each support column (12) abuts against the rear end face of the control circuit board (2). The front end of each support column (12) is provided with a positioning column (121) with an outer diameter smaller than the support column (12). The control circuit board (2) is provided with a positioning hole (21) corresponding to each positioning column (121). Each positioning column (121) is inserted into the positioning hole (21) at the corresponding position.

5. The reliable energy meter according to claim 4, characterized in that: A connecting plate (122) is provided between the outer side wall of each of the support columns (12) and the inner side wall of the rear shell assembly (1). Each connecting plate (122) is integrated with the inner side wall of the rear shell assembly (1) and the outer side wall of the corresponding support column (12).

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