Liquid crystal pulse type electricity meter

Abstract

The invention discloses a liquid crystal pulse type electric meter which comprises an installation part fixedly installed on a wall surface through screws, an electric meter shell of a hollow structure is fixedly installed on the outer surface of the front side of the installation part, and a sealing cover is fixedly installed on the front side of the electric meter shell through screws. According to the liquid crystal pulse type electric meter, a novel structural design is adopted, so that the sealing cover is secondarily fixed by using an internal clamping rod in the use process of the device, the difficulty of opening the electric meter by non-staff is improved, and when the electric meter is disassembled by fluke, the sealing cover is fixed by the clamping rod; the main control circuit board moves under the action of the reset spring to separate the first induction sheet from the second induction sheet, at the moment, the main control circuit board automatically starts the buzzer and the camera to achieve the purposes of warning and evidence retention, and the movable plate automatically rotates when a worker overhauls the electric meter, so that the safety of the electric meter is improved. The ventilation holes are dredged through the dredging needles on the surface, and the situation that heat dissipation is affected by blockage is reduced.

Description

Technical Field

[0001] This invention relates to the field of electricity meter technology, specifically to a liquid crystal pulse-type electricity meter. Background Technology

[0002] An electricity meter is a device that counts electricity consumption and is used in every household. Compared with traditional mechanical electricity meters, pulse electricity meters use a fully electronic control mode and use the pulse signal captured during electricity consumption to achieve the purpose of counting, thus having higher accuracy.

[0003] In the prior art, Chinese Patent No. CN113552398A discloses an electricity meter, including an electricity meter body; a lower positioning frame is fixedly connected to the lower surface of the electricity meter body; a limiting lock plate is slidably connected to the front side plate of the lower positioning frame; an outer movable block is slidably connected to the front side of the lower positioning frame; an inner movable conductor post is slidably connected to the rear side of the lower positioning frame; the electricity meter body includes an electricity meter connector, which is located below the electricity meter body and is a pentagonal conical structure made of copper; the lower positioning frame includes an outer positioning plate, which is located on the front wall of the lower positioning frame; an inner positioning plate is located behind the outer positioning plate; this design can increase the contact strength and contact area between the metal head of the wire and the fastening knob and the inner wall of the inner wiring groove; the positioning groove in the groove can further increase the contact strength between the wire conductor and the lower wiring terminal, improve the connection tightness and the resistance of the node position, facilitate wiring and disconnection, facilitate maintenance, and improve the applicability of the electricity meter;

[0004] The aforementioned device facilitates wiring and disconnection of the electricity meter during use. However, if the meter is too easy to disassemble, unauthorized personnel may attempt to modify the internal circuitry, leading to electricity theft. Furthermore, disassembly by unauthorized personnel poses a significant risk.

[0005] Furthermore, in the prior art, Chinese patent with authorization announcement number CN208383954U discloses a meter housing with heat dissipation function, including an upper housing, a lower housing, and a junction box. The lower housing has heat dissipation holes on both sides and the top. Heat dissipation pipes are provided on the outer sides of the lower housing. A pressure box is provided inside the lower housing. The pressure box has first connection ports on both sides. A liquid inlet pipe is provided at the bottom of the pressure box. A second connection port is provided on the liquid inlet pipe. A second connection point is provided on the second connection port. A heat absorption pipe is connected to the second connection point. A connecting block is provided at the other end of the heat absorption pipe. The connecting block has symmetrical first connection points on both sides. A connector is connected to the first connection point. A connecting horizontal pipe is connected to the connector. A heat dissipation pipe is connected to the connecting horizontal pipe. The heat dissipation pipe has a return pipe connected to the other end. The return pipe is connected to the first connection port. The heat absorption pipe is set on a heat sink. A heat dissipation plate is set on the heat sink.

[0006] The aforementioned device uses heat dissipation holes and heat dissipation pipes to cool the inside of the meter during use. However, in actual use, dust will accumulate on the surface of the heat dissipation holes after long-term use. As the dust accumulates, it will block the heat dissipation holes, thereby affecting the normal heat dissipation effect of the heat dissipation holes. Summary of the Invention

[0007] The purpose of this invention is to provide a liquid crystal pulse-type electricity meter to solve the problems mentioned in the background art, such as the use of illegally modified circuits to steal electricity and the blockage of heat dissipation holes affecting heat dissipation.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a liquid crystal pulse-type electricity meter, comprising a mounting component fixedly mounted on a wall using screws, wherein a hollow meter housing is fixedly mounted on the front outer surface of the mounting component, and a sealing cover is fixedly mounted on the front side of the meter housing using screws, and further comprising:

[0009] A status indicator light is fixedly installed in the middle of the outer surface of the sealing cover to display the overall working status of the meter.

[0010] The terminal block is fixedly installed on the lower outer surface of the mounting component. The input and output wires are connected to the internal circuit of the meter through the terminal block. A transparent protective cover is provided on the outside of the terminal block and is rotatably connected to the mounting component.

[0011] An internal partition is horizontally fixedly installed in the middle of the inside of the meter housing. The internal partition divides the inside of the meter housing into two spaces, and a main control circuit board is installed above the internal partition. The main control circuit board measures the electricity by capturing pulse signals.

[0012] The lower magnetic block is fixedly installed on the front and rear sides of the upper surface of the main control circuit board, and the upper magnetic block is fixedly installed on the lower surface of the sealing cover directly above the lower magnetic block.

[0013] A special lock hole is fixedly installed on the left and right sides of the outer shell of the meter. The special lock hole requires a special key to turn. The lock cylinder of the special lock hole is fixedly installed with a pressing cam located inside the meter shell. When the pressing cam rotates to the lower position, it limits the main control circuit board.

[0014] A cooling pump is fixedly installed inside the casing of the meter. The cooling pump uses negative pressure to form a flowing airflow to achieve the purpose of heat dissipation. The flowing airflow pipe dissipates heat from the main control circuit board through the ventilation holes opened on the left and right sides of the internal partition.

[0015] The movable plate is rotatably installed on the lower surface of the internal partition. Two movable plates are symmetrically arranged on the left and right sides, and the outer surface of the movable plate is fixedly installed with unblocking needles arranged in a matrix.

[0016] Preferably, a buzzer and a camera are fixedly installed on the outer surface of the sealing cover, and both the buzzer and the camera are electrically connected to the main control circuit board via wires. The main control circuit board controls the activation of the buzzer and the camera by sending an electrical signal. The buzzer emits a sound to serve as a warning, and the camera takes a photo of the operator and uploads it as evidence.

[0017] Preferably, guide slide rods are fixedly installed on the left and right sides of the lower surface of the main control circuit board, forming a through sliding structure with the internal partition, and a return spring is installed on the outside of the guide slide rod. The elasticity of the return spring is used to drive the guide slide rod to move the main control circuit board above up and down.

[0018] Preferably, a first sensing element is fixedly installed on the upper surface of the internal partition, and the first sensing element corresponds vertically to a second sensing element fixedly installed on the lower surface of the main control circuit board.

[0019] Preferably, the positional state between the first sensing element and the second sensing element is divided into two types: contact and separation. The contact and separation states are switched by moving the second sensing element through the main control circuit board.

[0020] Preferably, the lower surfaces of the left and right sides of the sealing cover are rotatably mounted with an inclined connecting rod, and the connecting rod is a spring telescopic rod structure. A compression spring is fixedly connected between the upper end of the connecting rod and the lower surface of the sealing cover. The elasticity of the compression spring can push the connecting rod to rotate, thereby causing the locking rod at the bottom of the connecting rod to disengage from the meter body.

[0021] Preferably, the bottom end of the connecting rod is equipped with a locking rod that forms an insert-type locking structure with the inner wall of the meter housing. The locking rod is fixed to the meter housing by the squeezing cam, thus forming a secondary fixation.

[0022] Preferably, a rotating wheel is coaxially fixed at the pivot position at the top of the movable plate to drive its rotation, and a pulling rope is wound around the outside of the rotating wheel to pull its rotation. By pulling the rotating wheel with the pulling rope, the rotating wheel drives the movable plate to rotate, and finally the unblocking of the ventilation holes on the outer surface of the movable plate is achieved.

[0023] Preferably, the bottom end of the pull rope is fixedly connected to the bottom end of the guide slide rod, and the middle part of the pull rope is steered by a guide wheel that is rotatably installed inside the meter housing. When the guide slide rod moves upward, it will drive the pull rope to move synchronously.

[0024] Compared with the prior art, the beneficial effects of this invention are as follows: This liquid crystal pulse-type electricity meter adopts a novel structural design, which allows the device to first use an internal locking rod to fix the sealing cover a second time during use, increasing the difficulty for non-staff members to open the meter. If the meter is accidentally opened, the main control circuit board moves under the action of a reset spring, causing the first and second sensing plates to separate. At this time, the main control circuit board automatically activates the buzzer and camera to achieve the purpose of warning and preserving evidence. Furthermore, when staff members inspect the meter, the movable plate automatically rotates, using its surface to clear the ventilation holes, reducing blockages that could affect heat dissipation. The specific details are as follows:

[0025] 1. The combined use of the compression cam, connecting rod, compression spring, and locking rod allows the compression cam to compress the bottom end of the connecting rod when it rotates to the top, causing the connecting rod to rotate. This, in turn, causes the locking rod at its bottom end to insert into the hole in the inner wall of the meter casing, forming a locking structure. This achieves the purpose of secondary fixation of the sealing cover (the primary fixation is achieved by using screws), thereby increasing the difficulty for non-staff members to open the meter casing.

[0026] 2. The upper magnetic block, lower magnetic block, reset spring, second sensing plate, and second sensing plate work together so that if an unauthorized person manages to open the sealed cover, the upper magnetic block and lower magnetic block lose their magnetic repulsion. As a result, the first sensing plate and second sensing plate separate under the elastic action of the reset spring. At this time, the main control circuit board immediately activates the buzzer and camera through an electrical signal. The former emits a sound to serve as a warning, while the latter takes a photo of the operator and uploads it as evidence.

[0027] 3. The coordinated use of the movable plate, unblocking needle, pull rope, and rotating wheel allows the sealing cover to be opened when the meter is being inspected. At this time, the return spring drives the guide slide rod to move upward, which in turn drives the pull rope to move, causing the pull rope to pull the rotating wheel to rotate. Ultimately, the movable plate is rotated upward, allowing the unblocking needle on the outer surface of the movable plate to unclog the ventilation holes, achieving the purpose of automatic cleaning and reducing blockage. Attached Figure Description

[0028] Figure 1 This is a front view structural diagram of the present invention;

[0029] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the bottom cross-sectional structure of the meter casing of the present invention;

[0031] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0032] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point B;

[0033] Figure 6 This is a schematic diagram showing the positional relationship between the connecting rod and the extrusion cam in this invention.

[0034] Figure 7 This is a three-dimensional cross-sectional structural diagram of the meter casing of the present invention;

[0035] Figure 8 This is a schematic diagram of the front cross-sectional structure of the meter casing of the present invention;

[0036] Figure 9 This is a schematic diagram of the internal partition structure from below;

[0037] Figure 10 This is a flowchart illustrating the operation of the main control circuit board of this invention.

[0038] In the diagram: 1. Mounting component; 2. Meter housing; 201. Sealing cover; 3. Status indicator light; 4. Terminal block; 5. Protective cover; 6. Internal partition; 7. Main control circuit board; 8. Lower magnetic block; 9. Upper magnetic block; 10. Special lock hole; 11. Compression cam; 12. Cooling pump; 13. Ventilation hole; 14. Movable plate; 15. Unblocking needle; 16. Buzzer; 17. Camera; 18. Guide slide rod; 19. Reset spring; 20. First sensing plate; 21. Second sensing plate; 22. Connecting rod; 23. Compression spring; 24. Locking rod; 25. Rotating wheel; 26. Pull rope; 27. Guide wheel. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Please see Figures 1-10 This invention provides a technical solution: a liquid crystal pulse-type electricity meter, including a mounting component 1 fixedly mounted on a wall with screws, a hollow meter housing 2 fixedly mounted on the front outer surface of the mounting component 1, and a sealing cover 201 fixedly mounted on the front side of the meter housing 2 with screws; further including: a status indicator light 3 fixedly mounted in the middle of the outer surface of the sealing cover 201, displaying the overall working status of the electricity meter; a terminal block 4 fixedly mounted on the lower outer surface of the mounting component 1, through which input and output wires are connected to the internal circuit of the electricity meter, and a transparent protective cover 5 rotatably connected to the mounting component 1 is provided outside the terminal block 4; and an internal partition 6 horizontally fixedly mounted on... Inside the meter casing 2, in the middle, an internal partition 6 divides the inside of the meter casing 2 into two spaces. A main control circuit board 7 is installed above the internal partition 6. The main control circuit board 7 measures the electricity by capturing pulse signals. A lower magnetic block 8 is fixedly installed on the front and rear sides of the upper surface of the main control circuit board 7. An upper magnetic block 9 is fixedly installed on the lower surface of the sealing cover 201 directly above the lower magnetic block 8. A special lock hole 10 is fixedly installed on the left and right sides of the outside of the meter casing 2. The special lock hole 10 requires a special key to operate. A pressing cam 11 located inside the meter casing 2 is fixedly installed at the lock cylinder position of the special lock hole 10. When the pressing cam 11 rotates to the lower position, it limits the main control circuit board 7.

[0041] A buzzer 16 and a camera 17 are fixedly mounted on the outer surface of the sealing cover 201. Both the buzzer 16 and the camera 17 are electrically connected to the main control circuit board 7 via wires. The main control circuit board 7 controls the activation of the buzzer 16 and the camera 17 by sending an electrical signal. Guide slide rods 18, which form a through-type sliding structure with the internal partition 6, are fixedly mounted on the left and right sides of the lower surface of the main control circuit board 7. A return spring 19 is installed on the outside of the guide slide rods 18. A first sensing plate 20 is fixedly mounted on the upper surface of the internal partition 6. The first sensing plate 20 and the second sensing plate 21 fixedly mounted on the lower surface of the main control circuit board 7 are vertically corresponding to each other. The positional state between the second sensing element 21 and the second sensing element 21 is divided into two types: contact and separation. The main control circuit board 7 drives the second sensing element 21 to move to achieve the switching between contact and separation states. The lower surfaces of the left and right sides of the sealing cover 201 are rotatably mounted with a connecting rod 22 in an inclined structure. The connecting rod 22 is a spring telescopic rod structure. The upper end of the connecting rod 22 is fixedly connected to the lower surface of the sealing cover 201 with a compression spring 23. The bottom end of the connecting rod 22 is equipped with a locking rod 24 that forms an insertion-type locking structure with the inner wall of the meter housing 2. The locking rod 24 is fixed to the meter housing 2 by the compression cam 11, forming a secondary fixation.

[0042] When using the device, firstly, the mounting part 1 and the meter housing 2 are fixed to the wall using bolts. Then, the wires are connected through the terminal 4. At this time, the main control circuit board 7 inside the meter housing 2 counts the electricity consumption by capturing the pulse signal during power consumption and displays it on the display screen. If an unauthorized person tries to open the sealing cover 201, the locking rod 24 is used to reinforce the fixation between the sealing cover 201 and the meter housing 2, making it difficult to open. If the unauthorized person manages to open the sealing cover 201, after removing the sealing cover 201, the upper magnetic block 9 and the lower magnetic block 8 disengage, and the magnetic repulsion disappears. At this time, under the elastic action of the return spring 19, the guide slide rod 18 moves the main control circuit board 7 upward. The main control circuit board 7 then moves the second sensing plate 21 on its lower surface to the first sensing plate. When contact is broken between 20 and 20, the main control circuit board 7 immediately activates the buzzer 16 and camera 17 upon receiving this signal. At this time, the buzzer 16 emits an alarm sound to serve as a warning, and the camera 17 takes a photo of the operator and uploads it to the server to secure evidence for future identification of the perpetrator. When staff need to open the device for maintenance, they first use a special key to turn the special lock hole 10, thereby causing the compression cam 11 inside the meter casing 2 to rotate downwards (in its normal state, the compression cam 11 rotates upwards to compress the connecting rod 22, causing the locking rod 24 at the bottom of the connecting rod 22 to form a locking structure with the inside of the meter casing 2). At this time, the compression cam 11 compresses and limits the main control circuit board 7, and after opening the sealing cover 201, the main control circuit board 7 will not move upwards.

[0043] A cooling pump 12 is fixedly installed inside the meter housing 2. The cooling pump 12 uses negative pressure to form a flowing airflow to achieve the purpose of heat dissipation. The flowing airflow pipe passes through the ventilation holes 13 on the left and right sides of the internal partition 6 to dissipate heat on the main control circuit board 7. A movable plate 14 is rotatably installed on the lower surface of the internal partition 6. Two movable plates 14 are symmetrically arranged on the left and right sides. A matrix of unblocking needles 15 are fixedly installed on the outer surface of the movable plate 14. A rotating wheel 25 is coaxially fixedly installed at the pivot position at the top of the movable plate 14 to drive its rotation. A pulling rope 26 is wound around the outside of the rotating wheel 25 to pull its rotation. The bottom end of the pulling rope 26 is fixedly connected to the bottom end of the guide slide rod 18. The middle of the pulling rope 26 is steered by a guide wheel 27 rotatably installed inside the meter housing 2.

[0044] After the staff opens the sealing cover 201, the power supply to the meter is disconnected (i.e., the buzzer 16 and camera 17 will not work). After the maintenance is completed, the staff can rotate the special lock hole 10 back and forth, causing the squeezing cam 11 to rotate up and down. At this time, the return spring 19 will drive the guide slide rod 18 to move up and down, thereby causing the guide slide rod 18 to drive the pull rope 26 to move. At this time, the pull rope 26 pulls the rotating wheel 25 to rotate under the guidance of the guide wheel 27. The rotating wheel 25 drives the movable plate 14 to rotate, which finally causes the unblocking needle 15 on the outer surface of the movable plate 14 to unclog the ventilation hole 13 and reduce dust blockage. After the operation is completed, the staff reinstalls the sealing cover 201 and finally rotates the squeezing cam 11 to the top to squeeze the connecting rod 22.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A liquid crystal pulse-type electricity meter, comprising a mounting component (1) fixedly mounted on a wall surface by screws, wherein a hollow meter housing (2) is fixedly mounted on the front outer surface of the mounting component (1), and a sealing cover (201) is fixedly mounted on the front side of the meter housing (2) by screws, characterized in that, Also includes: The status indicator light (3) is fixedly installed in the middle of the outer surface of the sealing cover (201) to display the overall working status of the meter. The terminal block (4) is fixedly installed on the outer surface of the lower end of the mounting component (1). The input and output wires are connected to the internal circuit of the meter through the terminal block (4). A transparent protective cover (5) is provided on the outside of the terminal block (4) and is rotatably connected to the mounting component (1). An internal partition (6) is horizontally fixedly installed in the middle of the inside of the meter housing (2). The internal partition (6) divides the inside of the meter housing (2) into two spaces. A main control circuit board (7) is installed above the internal partition (6). The main control circuit board (7) measures the electricity by capturing pulse signals. The lower magnetic block (8) is fixedly installed on the front and rear sides of the upper surface of the main control circuit board (7), and the upper magnetic block (9) is fixedly installed on the lower surface of the sealing cover (201) directly above the lower magnetic block (8); Special lock hole (10) is fixedly installed on the outside of the left and right sides of the meter housing (2). The special lock hole (10) needs to be turned with a special key. The lock cylinder of the special lock hole (10) is fixedly installed with a pressing cam (11) located inside the meter housing (2). When the pressing cam (11) rotates to the bottom, it limits the main control circuit board (7). A cooling pump (12) is fixedly installed inside the meter casing (2). The cooling pump (12) uses negative pressure to form a flowing airflow to achieve the purpose of heat dissipation. The flowing airflow pipe dissipates heat from the main control circuit board (7) through the ventilation holes (13) opened on the left and right sides of the internal partition (6). The movable plate (14) is rotatably installed on the lower surface of the internal partition (6). Two movable plates (14) are symmetrically arranged on the left and right sides, and the outer surface of the movable plate (14) is fixedly installed with unblocking needles (15) arranged in a matrix.

2. The liquid crystal pulse-type meter according to claim 1, characterized in that: A buzzer (16) and a camera (17) are fixedly installed on the outer surface of the sealing cover (201), and the buzzer (16) and the camera (17) are electrically connected to the main control circuit board (7) through wires. The main control circuit board (7) controls the buzzer (16) and the camera (17) to turn on by sending an electrical signal.

3. A liquid crystal pulse-type meter according to claim 2, characterized in that: The main control circuit board (7) has guide slide rods (18) fixedly installed on the left and right sides of its lower surface, which together form a through sliding structure with the internal partition (6), and a return spring (19) is installed on the outside of the guide slide rods (18).

4. A liquid crystal pulse-type meter according to claim 3, characterized in that: The first sensing plate (20) is fixedly installed on the upper surface of the internal partition (6), and the first sensing plate (20) and the second sensing plate (21) fixedly installed on the lower surface of the main control circuit board (7) are vertically corresponding to each other.

5. A liquid crystal pulse-type meter according to claim 4, characterized in that: The positional state between the first sensing element (20) and the second sensing element (21) is divided into two types: contact and separation. The contact and separation states are switched by moving the second sensing element (21) through the main control circuit board (7).

6. A liquid crystal pulse-type meter according to claim 2, characterized in that: The sealing cover (201) has a rotatably mounted connecting rod (22) with an inclined structure on its lower surface on both sides. The connecting rod (22) is a spring telescopic rod structure, and a compression spring (23) is fixedly connected between the upper end of the connecting rod (22) and the lower surface of the sealing cover (201).

7. A liquid crystal pulse-type meter according to claim 6, characterized in that: The bottom end of the connecting rod (22) is equipped with a locking rod (24) that forms an insertion locking structure with the inner wall of the meter housing (2). The locking rod (24) is fixed to the meter housing (2) by the squeezing cam (11).

8. A liquid crystal pulse-type meter according to claim 1, characterized in that: The rotating wheel (25) that drives the rotating plate (14) to rotate is coaxially fixed at the pivot position at the top of the movable plate (14), and a pulling rope (26) that pulls the rotating plate (25) to rotate is wound around the outside of the rotating wheel (25).

9. A liquid crystal pulse-type meter according to claim 8, characterized in that: The bottom end of the pull rope (26) is fixedly connected to the bottom end of the guide slide (18), and the middle part of the pull rope (26) is rotated by a guide wheel (27) that is rotatably installed inside the meter casing (2).

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