Electric energy meter convenient to assemble

Abstract

The utility model discloses an electric energy meter convenient to assemble, which relates to the technical field of electric energy meters and comprises a shell, a circuit board, a panel and a terminal seat, two sides of the inner surface of the shell are fixedly connected with connecting buckles, two sides of the circuit board are provided with mounting grooves matched with the connecting buckles, and the terminal seat is inserted into mounting holes and connected with the lower end of the circuit board; the terminal seat comprises a first clamping plate and a second clamping plate, two sides of the second clamping plate are fixedly connected with buckles clamped with the first clamping plate, two sides of the lower part of the shell are fixedly connected with inserting rods connected with the first clamping plate, the inserting rods abut against the outer surfaces of the buckles, the circuit board is fixedly connected with a connecting frame, and the connecting frame is clamped with the panel. The inner surface of the meter cover is fixedly connected with an insertion block connected with the connecting frame. According to the utility model, the number of screws used in the assembling process of the electric energy meter can be effectively reduced, so that repeated steps are reduced, the operation amount of assembling work is reduced, and the assembling production efficiency can be improved to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, and in particular to an electricity meter that is easy to assemble. Background Technology

[0002] An electricity meter is an instrument used to measure electrical energy; it is also called a kilowatt-hour meter, a power meter, or a kilowatt-hour meter, and refers to instruments that measure various electrical quantities. Electricity meters are divided into mechanical electricity meters and electronic electricity meters. Mechanical electricity meters have advantages such as simple and reliable structure, low maintenance costs, and low failure rate, and therefore are still widely used today. Mechanical electricity meters generally consist of a casing, meter cover, terminal cover, circuit board, terminal block, wiring terminals, panel, and a counter mounted on the panel.

[0003] When assembling a mechanical energy meter, the meter is usually installed on the panel first. Then, the panel is pre-installed on the circuit board with 2-4 screws, and the circuit board is then installed inside the casing with 4-8 screws. The wiring terminals are also pre-installed on the terminal block, which consists of two clamping plates. The wiring terminals are installed between the two clamping plates, which are fixed with two screws. The terminal block is then fixed to the lower part of the casing with 2-4 screws. After the relevant wiring is connected, the meter cover and terminal cover can be installed on the casing.

[0004] It can be seen that a large number of screws are used in the assembly of mechanical energy meters. Therefore, the screws need to be tightened repeatedly during assembly, resulting in many repetitive steps. This undoubtedly leads to a large workload in the assembly process, making the assembly work inconvenient and affecting production efficiency. Utility Model Content

[0005] The purpose of this invention is to solve the problem of the large amount of manual work required when assembling mechanical energy meters in the prior art, and to propose an energy meter that is easy to assemble.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An easy-to-assemble electricity meter includes a housing, a circuit board, a panel, and a terminal block. A counter is installed on the panel, and wiring terminals are installed in the terminal block. A meter cover is installed on the outside of the housing. Connecting buckles are fixedly connected to both sides of the inner surface of the housing. Mounting slots that match the connecting buckles are opened on both sides of the circuit board. Mounting holes are opened at the bottom of the housing. The terminal block is inserted into the mounting holes and connected to the bottom of the circuit board.

[0008] The terminal block includes a first clamping plate and a second clamping plate. Both sides of the second clamping plate are fixedly connected to buckles that engage with the first clamping plate. Both sides of the lower part of the outer shell are fixedly connected to insert rods that connect to the first clamping plate. The insert rods abut against the outer surface of the buckles to fix the buckles to the first clamping plate.

[0009] A rod-shaped connecting frame is fixedly connected to the circuit board. The connecting frame is snapped into the panel. An insert block connected to the connecting frame is fixedly connected to the inner surface of the cover. This is used to snap the connecting frame into the panel and fix it in place.

[0010] In some embodiments, the connecting buckle is L-shaped, and the inner sides of the outer shell are fixedly connected with first ribs, which abut against the back of the circuit board.

[0011] In some embodiments, the buckle is L-shaped, and there are two buckles on each side that are symmetrical. T-shaped connecting grooves that are adapted to the buckles are provided on both sides of the first clamping plate.

[0012] In some embodiments, both sides of the first clamping plate are provided with connection holes adapted to the insertion rod. The connection holes and the connection grooves are intersecting and communicating. The insertion rod is inserted into the connection hole and abuts against the two buckles. A first screw is connected between the insertion rod and the first clamping plate.

[0013] In some embodiments, the outer end of the connecting frame is tapered and has a rectangular through slot, and the insert block is inserted into the through slot.

[0014] In some embodiments, the outer surface of the connecting frame is provided with an annular positioning groove, and the panel is provided with a positioning hole that matches the positioning groove.

[0015] In some embodiments, the upper surface of the second clamping plate is provided with a groove adapted to the circuit board, and the lower end of the circuit board is inserted into the groove to fix the lower end of the circuit board.

[0016] In some embodiments, a pressure block and a second rib are fixedly connected to the inner top wall of the housing, and the upper end of the circuit board is inserted into the gap between the pressure block and the second rib to fix the upper end of the circuit board.

[0017] In some embodiments, a locking block is fixedly connected to the upper surface of the outer casing, and a slot adapted to the locking block is opened on the upper surface of the watch cover. The locking block is inserted into the slot, and a second screw is connected between the lower part of the watch cover and the outer casing.

[0018] Compared with the prior art, this utility model provides an easy-to-assemble electricity meter, which has the following advantages:

[0019] The snap-fit ​​and connecting slot design allows for quick pre-assembly of the first clamp, second clamp, and terminal block, eliminating the need for screws in the terminal block assembly. Furthermore, the insertion rod and connecting hole design ensure that the snap-fit ​​is firmly engaged in the connecting slot during the assembly of the terminal block onto the housing, further enhancing the connection stability between the first and second clamps and ensuring complete fixation. This prevents loosening during later use, reducing the need for pre-assembly of the terminal block and the feeding of screws used in assembling the terminal block and insertion rod, making the assembly process simpler, more convenient, and ensuring sufficient reliability.

[0020] By using the connecting buckle and mounting slot, the circuit board can be pre-assembled inside the housing. After the terminal block is installed, the groove on the upper surface of the second clamp plate will fit over the lower end of the circuit board and press firmly against the lower end of the circuit board, thereby achieving the purpose of fixing the circuit board to the housing. Furthermore, the circuit board assembly process does not require screws, making the circuit board assembly work more convenient.

[0021] The connecting bracket and positioning holes allow for pre-assembly of the panel onto the circuit board. Furthermore, the insert blocks, when the meter cover is placed on the outer casing, also insert into the slots on the connecting bracket, thus completely assembling and securing the panel to the circuit board, ensuring assembly stability. This eliminates the need for screws in panel assembly. In summary, this effectively reduces the number of screws used in the electricity meter assembly process, thereby reducing repetitive steps and the amount of assembly work, and improving assembly efficiency to a certain extent.

[0022] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0023] Figure 1 This is a three-dimensional diagram of the internal structure of this utility model from the front view;

[0024] Figure 2 This is an exploded three-dimensional structural diagram of the area between the outer casing and the terminal block.

[0025] Figure 3 This is an exploded 3D structural diagram of the area between the circuit board and the panel.

[0026] Figure 4 This is a frontal three-dimensional structural diagram of the present invention;

[0027] Figure 5This is a side sectional view of the present invention.

[0028] Figure 6 This is an exploded three-dimensional structural diagram of the terminal block;

[0029] Figure 7 This is a front sectional view of the terminal block structure.

[0030] Figure 8 This is a bottom sectional view of the terminal block structure.

[0031] Figure 9 This is a top sectional view of the structure of this utility model;

[0032] Figure 10 For this utility model Figure 9 Enlarged structural diagram at point A in the middle;

[0033] Figure 11 This is an exploded three-dimensional structural diagram of the area between the circuit board and the terminal block.

[0034] Figure 12 This is an exploded three-dimensional structural diagram of the outer casing, cover, and terminal cover.

[0035] In the diagram: 1. Outer shell; 101. Mounting hole; 2. Circuit board; 201. Mounting groove; 3. Panel; 301. Positioning hole; 4. Counter; 5. Terminal block; 501. First clamping plate; 5011. Connecting groove; 5012. Connecting hole; 5013. Threaded hole; 502. Second clamping plate; 6. Wiring terminal; 7. Connecting bracket; 701. Through groove; 702. Positioning groove; 8. Connecting buckle; 9. First stiffening plate; 10. Buckle; 11. Insert rod; 12. First screw; 13. Insert block; 14. Pressure block; 15. Second stiffening plate; 16. Cover; 1601. Fixing hole; 17. Slot; 18. Block; 19. Second screw; 20. Terminal cover; 21. Third screw; 22. Groove. Detailed Implementation

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Reference Figure 1-6An easily assembled electricity meter includes a housing 1, a circuit board 2, a panel 3, and a terminal block 5. A counter 4 is mounted on the panel 3. Several wiring terminals 6 are installed in the terminal block 5. A meter cover 16 is mounted on the outside of the housing 1. Connecting buckles 8 are fixedly connected to both sides of the inner surface of the housing 1. Rectangular mounting slots 201, adapted to the connecting buckles 8, are opened on both sides of the circuit board 2. The connecting buckles 8 are L-shaped, and there are three connecting buckles 8 on each side. First stiffening plates 9 are fixedly connected to both sides of the inside of the housing 1. The first stiffening plates 9 abut against the back of the circuit board 2. The first stiffening plates 9 not only provide a certain positioning function for the circuit board 2, but also effectively improve the overall strength of the housing 1 by being integrally formed at the corner of the inner surface edge of the housing 1. A mounting hole 101 is opened at the lower part of the housing 1. The terminal block 5 is inserted into the mounting hole 101 and connected to the lower end of the circuit board 2. Furthermore, positioning surfaces are provided on both sides of the mounting hole 101 at the lower part of the housing 1 for positioning the insertion and installation of the terminal block 5.

[0038] The terminal block 5 includes a first clamping plate 501 and a second clamping plate 502. The outer surface of the first clamping plate 501 has a groove for installing a terminal block 6. The terminal block 6 is inserted into the groove and abuts against the second clamping plate 502. Both sides of the second clamping plate 502 are fixedly connected to buckles 10 that engage with the first clamping plate 501. Both sides of the lower part of the outer casing 1 are fixedly connected to insert rods 11 that connect to the first clamping plate 501. The insert rods 11 abut against the outer surface of the buckles 10 to fix the buckles 10 to the first clamping plate 501.

[0039] Reference Figure 6-8 The buckle 10 is L-shaped, and there are two buckles 10 on each side. The first clamping plate 501 has T-shaped connecting grooves 5011 on both sides that are adapted to the buckles 10.

[0040] Both sides of the first clamping plate 501 are provided with connecting holes 5012 that are adapted to the insert rod 11. The connecting holes 5012 and the connecting grooves 5011 are cross-connected. The insert rod 11 is inserted into the connecting holes 5012 and abuts against the two buckles 10. A first screw 12 is connected between the insert rod 11 and the first clamping plate 501. Specifically, a hole is provided at the outer end of the insert rod 11, and the first screw 12 is threaded into the hole. The head of the first screw 12 abuts against the lower surface of the first clamping plate 501.

[0041] Reference Figure 1 and 3 Four rod-shaped connecting brackets 7 are fixedly connected to the circuit board 2. The connecting brackets 7 are snapped together with the panel 3. The inner surface of the cover 16 is fixedly connected with the insert block 13 connected to the connecting bracket 7, which is used to snap together and fix the connecting bracket 7 with the panel 3.

[0042] Reference Figure 9-10The outer end of the connecting frame 7 is tapered and has a rectangular through groove 701. Since the material of the connecting frame 7 is polypropylene, it has a certain elasticity. Therefore, when the part of the connecting frame 7 located on both sides of the through groove 701 is squeezed, it can bend and elastically deform into the through groove 701. The insert block 13 is inserted into the through groove 701.

[0043] The outer surface of the connecting frame 7 is provided with an annular positioning groove 702, and the panel 3 is provided with four positioning holes 301 with the same diameter and height as the positioning groove 702.

[0044] Reference Figure 11 The upper surface of the second clamping plate 502 is provided with a groove 22 that is compatible with the circuit board 2. The lower end of the circuit board 2 is inserted into the groove 22 to fix the lower end of the circuit board 2.

[0045] Reference Figure 2 and Figure 5 The inner top wall of the outer casing 1 is fixedly connected with a pressure block 14 and a second rib plate 15 respectively. The upper end of the circuit board 2 is inserted into the gap between the pressure block 14 and the second rib plate 15 to fix the upper end of the circuit board 2.

[0046] Reference Figure 4 , Figure 5 and Figure 12 A locking block 18 is fixedly connected to the upper surface of the outer casing 1, and a slot 17 adapted to the locking block 18 is opened on the upper surface of the cover 16. The locking block 18 is inserted into the slot 17. A fixing hole 1601 is opened on the outer casing 1, and a second screw 19 threadedly connected to the fixing hole 1601 is inserted through the lower part of the cover 16.

[0047] A terminal cover 20 is also installed on the outer side of the terminal base 5 on the outer casing 1. A third screw 21 is inserted into both sides of the terminal cover 20. Threaded holes 5013 that are compatible with the third screw 21 are opened on both sides of the first clamping plate 501. The third screw 21 is threadedly installed in the threaded hole 5013.

[0048] In this utility model, when assembling the electricity meter, pre-assembly can be performed between the terminal block 5 and the wiring terminal 6, and between the circuit board 2 and the panel 3. For example... Figure 6 As shown, when assembling the terminal block 5 and the wiring terminal 6, first insert the wiring terminal 6 into the slot on the first clamping plate 501, and then align the first clamping plate 501 with the second clamping plate 502, as shown. Figure 8As shown, during the docking process, the buckle 10 needs to be inserted into the connecting groove 5011. Since the buckle 10 has a certain elasticity, the buckle head will be locked on the stepped surface of the T-shaped connecting groove 5011 during this process, thereby pre-fixing the first clamping plate 501 and the second clamping plate 502 to prevent the first clamping plate 501, the second clamping plate 502 and the wiring terminal 6 from falling apart when the terminal block 5 is removed and assembled later, thus ensuring the normal progress of the subsequent assembly work.

[0049] Then, the panel 3, which houses the counter 4, is pre-assembled with the circuit board 2 via the connecting bracket 7, such as... Figure 3 As shown, during assembly, the positioning hole 301 on panel 3 is fitted onto connector 7, as follows. Figure 9 and Figure 10 As shown, during this process, the positioning hole 301 will squeeze the conical head of the connecting frame 7, causing the head of the connecting frame 7 to bend and deform into the through groove 701. When the positioning hole 301 passes through the head of the connecting frame 7 and reaches the positioning groove 702, the head of the connecting frame 7 will rebound back to its original position. At this time, the positioning hole 301 is just fitted into the positioning groove 702, thereby pre-assembling the panel 3 and the circuit board 2 together. Then, the circuit on the counter 4 can be soldered to the circuit board 2. Moreover, the pre-fixing between the connecting frame 7 and the panel 3 can also prevent the panel 3 and the circuit board 2 from falling apart during subsequent transportation or handling, which facilitates the later assembly.

[0050] Then, pick up panel 3 and place circuit board 2 into housing 1, as follows. Figure 2 and Figure 3 As shown, during this process, ensure that the mounting slot 201 is fitted onto the connecting buckle 8 until the circuit board 2 abuts against the first rib plate 9, then push the circuit board 2 upward to make it slide upward a certain distance, as shown. Figure 5 As shown, during this process, the bent end of the L-shaped connector 8 will abut against the outer surface of the circuit board 2, thereby fixing the circuit board 2 and the outer shell 1 to a certain extent. At the same time, the upper end of the circuit board 2 will also be inserted into the gap between the pressure block 14 and the second rib 15, thereby fixing the upper end of the circuit board 2 and the outer shell 1 to a certain extent.

[0051] Next, as Figure 2 As shown, insert the assembled terminal block 5 into the mounting hole 101 at the bottom of the housing 1 from bottom to top until both sides of the terminal block 5 contact the positioning surface at the bottom of the housing 1. This confirms that the terminal block is properly installed. During this process, if... Figure 7 and Figure 8As shown, the insertion rod 11 is also inserted into the connection hole 5012 and abuts against the two clips 10, thereby tightly locking the clips 10 into the connection groove 5011, thus improving the connection stability between the first clamping plate 501 and the second clamping plate 502, ensuring that the two are completely fixed and preventing loosening during later use; then the first screw 12 can be screwed into the hole at the end of the insertion rod 11. After tightening, the head of the first screw 12 abuts against the lower surface of the first clamping plate 501, thus ensuring that the terminal block 5 is firmly fixed on the outer shell 1, achieving the purpose of assembling the terminal block 5 and the outer shell 1.

[0052] Furthermore, during the installation of terminal block 5, such as Figure 5 and Figure 11 As shown, the groove 22 on the upper surface of the second clamping plate 502 will also fit over the lower end of the circuit board 2 and press against the lower end of the circuit board 2. At this time, the terminal block 5 and the connecting buckle 8 will clamp the circuit board 2. Therefore, after the terminal block 5 and the outer shell 1 are fixed together by the first screw 12, the purpose of fixing the circuit board 2 onto the outer shell 1 can be achieved.

[0053] Then, connect the circuitry on circuit board 2 to terminal block 6, and after passing a qualified test, install the cover 16. During installation, if... Figure 12 As shown, first, the slot 17 on the meter cover 16 is fitted onto the latch 18 on the outer casing 1. During this process, the meter cover 16 and the outer casing 1 are tilted at a certain angle with the contact part between the slot 17 and the latch 18 as the center. Then, the meter cover 16 is rotated towards the outer casing 1 with the contact part between the slot 17 and the latch 18 as the center, so that the meter cover 16 covers the outer casing 1. Next, the second screw 19 is screwed between the meter cover 16 and the outer casing 1 to complete the installation of the meter cover 16. Finally, the terminal cover 20 is placed on the lower part of the terminal base 5, and the third screw 21 is screwed between the terminal cover 20 and the outer casing 1 to complete the assembly of the entire energy meter. (Specific details are as follows...) Figure 4 As shown.

[0054] like Figure 5 , Figure 9 and Figure 10 During the process of placing the cover 16 on the outer casing 1, the insert 13 inside the cover 16 will also be inserted into the through slot 701 on the connecting bracket 7, thereby fixing the tapered end of the connecting bracket 7, thus fixing the positioning slot 702 and the positioning hole 301, and then the panel 3 is completely assembled and fixed on the circuit board 2 through the connecting bracket 7, ensuring its assembly stability, and the assembly of the panel 3 no longer relies on screws, thus making the assembly work more convenient.

[0055] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. An easy-to-assemble electricity meter, comprising a housing (1), a circuit board (2), a panel (3), and a terminal block (5), wherein a counter (4) is mounted on the panel (3), a wiring terminal (6) is mounted inside the terminal block (5), and a meter cover (16) is mounted on the outside of the housing (1), characterized in that: The inner surface of the outer shell (1) is fixedly connected with connecting buckles (8) on both sides. The circuit board (2) has mounting grooves (201) that are compatible with the connecting buckles (8) on both sides. The lower part of the outer shell (1) has mounting holes (101). The terminal block (5) is inserted into the mounting holes (101) and connected to the lower end of the circuit board (2). The terminal block (5) includes a first clamping plate (501) and a second clamping plate (502). Both sides of the second clamping plate (502) are fixedly connected with buckles (10) that engage with the first clamping plate (501). Both sides of the lower part of the outer shell (1) are fixedly connected with insert rods (11) that connect with the first clamping plate (501). The insert rods (11) abut against the outer surface of the buckles (10) to fix the buckles (10) and the first clamping plate (501). A connecting frame (7) is fixedly connected to the circuit board (2). The connecting frame (7) is snapped together with the panel (3). The inner surface of the cover (16) is fixedly connected with a plug (13) that is connected to the connecting frame (7), which is used to snap together and fix the connecting frame (7) with the panel (3).

2. The easily assembled electricity meter according to claim 1, characterized in that: The connecting buckle (8) is L-shaped, and the inner sides of the outer shell (1) are fixedly connected with the first rib plate (9), which abuts against the back of the circuit board (2).

3. The easily assembled electricity meter according to claim 1, characterized in that: The buckle (10) is L-shaped, and there are two buckles (10) on each side. The first clamp (501) has T-shaped connecting grooves (5011) on both sides that are compatible with the buckle (10).

4. The easily assembled energy meter according to claim 3, characterized in that: Both sides of the first clamping plate (501) are provided with connection holes (5012) that are compatible with the insertion rod (11). The connection holes (5012) and the connection groove (5011) are cross-connected. The insertion rod (11) is inserted into the connection hole (5012) and abuts against the two buckles (10). The insertion rod (11) and the first clamping plate (501) are connected by a first screw (12).

5. The easily assembled energy meter according to claim 1, characterized in that: The outer end of the connecting frame (7) is tapered and has a rectangular through groove (701), and the insert (13) is inserted into the through groove (701).

6. The easily assembled energy meter according to claim 5, characterized in that: The outer surface of the connecting frame (7) is provided with an annular positioning groove (702), and the panel (3) is provided with a positioning hole (301) that matches the positioning groove (702).

7. The easily assembled electricity meter according to claim 1, characterized in that: The upper surface of the second clamping plate (502) is provided with a groove (22) that is compatible with the circuit board (2). The lower end of the circuit board (2) is inserted into the groove (22) to fix the lower end of the circuit board (2).

8. The easily assembled electricity meter according to claim 1, characterized in that: The inner top wall of the outer shell (1) is fixedly connected with a pressure block (14) and a second rib plate (15). The upper end of the circuit board (2) is inserted into the gap between the pressure block (14) and the second rib plate (15) to fix the upper end of the circuit board (2).

9. The easily assembled electricity meter according to claim 1, characterized in that: The upper surface of the outer shell (1) is fixedly connected with a locking block (18), and the upper surface of the cover (16) is provided with a slot (17) that is compatible with the locking block (18). The locking block (18) is inserted into the slot (17), and a second screw (19) is connected between the lower part of the cover (16) and the outer shell (1).

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