An energy meter with a built-in high-current relay

Abstract

This invention discloses an energy meter with a built-in high-current relay, relating to the field of energy meter technology. The energy meter includes a meter box containing a control panel and a relay. A wiring plate is embedded in the end face of the meter box. A through hole is formed in the center of the front of the wiring plate, and wire holes are formed at both ends of the front of the wiring plate. A conical protrusion is movably fitted inside the through hole, and a main rod is fixedly connected to the outer end face of the conical protrusion. This invention overcomes the shortcomings of existing technologies, achieving efficient wiring, stable conductivity, precise clamping, and quick assembly and disassembly. It solves the problems of complex wiring, poor contact, inconvenient maintenance, and low safety in traditional energy meters, and has high social value and application prospects.

Description

Technical Field

[0001] This invention relates to the field of electricity meter technology, and in particular to an electricity meter with a built-in high-current relay. Background Technology

[0002] With the popularization of smart grids, electricity meters with built-in high-current relays are widely used in industrial, commercial and residential electricity metering scenarios. Modern electricity meters generally use built-in relays to automatically control the on and off states, and work with circuit boards and terminals to achieve high-current transmission. They are widely used in remote fee control, overload protection and other applications.

[0003] However, modern products still have obvious defects in actual use. They have poor stability in high-current wiring, and the external wires are simply clamped by the terminals, resulting in a small contact area. When a large current passes through, they are prone to overheating and loosening, leading to poor contact, power outages, or even arcing, which poses a safety hazard. They also lack quick power-off and quick-disconnect maintenance structures. Conventional energy meters do not have dedicated quick-disconnect mechanisms. When repairing or replacing wires, screws and terminals must be removed one by one, which is cumbersome and inefficient, and cannot meet the needs of quick power-off and quick wire removal.

[0004] To address this, we propose an energy meter with a built-in high-current relay. Summary of the Invention

[0005] To address the issues of poor stability in high-current wiring of existing electricity meters, lack of quick-connect maintenance structures for power-off and quick-release, and insufficient locking and anti-loosening structures, this invention adopts the following technical solution: An energy meter with a built-in high-current relay includes a meter box, a control panel and a relay inside the meter box, a light-transmitting plate for observation on the meter box, a wire guide plate embedded in the end face of the meter box, a through hole in the center of the front of the wire guide plate, wire holes at both ends of the front of the wire guide plate, a conical protrusion movably fitted inside the through hole, and a main rod fixedly connected to the outer end face of the conical protrusion; Mounting frames are fixedly installed at both ends of the inner cavity of the meter box. The mounting frames are equipped with power connection frames that slide and fit with them in the vertical direction. The power connection frames are equipped with power connection posts that are electrically connected to the relay. The inner end face of the conical protrusion is fixedly connected with a screw that is threadedly fitted with the mounting frame.

[0006] Preferably, the threading plate is provided with a main locking mechanism located at both ends of the thread hole, and the threading plate is provided with a secondary locking mechanism located outside the thread hole; The main locking mechanism includes a main locking frame that slides within the inner cavity of the threading plate. The end of the main locking frame near the through hole is responsible for contacting the surface of the conical protrusion, and the end of the main locking frame near the wire hole is responsible for contacting the surface of the external wire. The threading plate is provided with a main baffle located in the middle of the main locking frame, and a first spring connected to the main locking frame is provided on the side of the main baffle.

[0007] Preferably, the secondary locking mechanism includes a secondary locking frame that slides within the inner cavity of the wire threading plate. The end of the secondary locking frame near the wire hole is responsible for contacting the surface of the external wire. The secondary locking frame is provided with a protruding plate, and a second spring is provided at both the upper and lower ends of the secondary locking frame.

[0008] Preferably, a sloping insert rod that contacts the convex plate is inserted through the top surface of the threading plate, and the top end of the sloping insert rod is provided with a pressure strip located outside the top surface of the threading plate.

[0009] Preferably, the top and bottom surfaces of the conductive frame are provided with contact plates that contact the inner surface of the power receiving frame to transmit electrical energy, and both ends of the conductive frame are provided with balance pins that limit the opening and compression change paths.

[0010] Preferably, the mounting frame is provided with a conductive frame, and the upper and lower ends of the inner side of the conductive frame are respectively provided with a second synchronous pin and a first synchronous pin that slide and fit together. A connecting plate is rotatably provided on the first synchronous pin.

[0011] Preferably, push frames are slidably fitted on both the left and right ends of the inner side of the middle of the mounting frame, and a guide groove is provided inside the mounting frame for adjusting the opening and compression of the conductive frame in the vertical direction. A guide wheel is provided on the outer side of the conductive frame and slidably fitted with the guide groove.

[0012] Preferably, the outer side of the push frame is provided with a locking plate for sliding and limiting the mounting frame, the inner surface of the push frame is provided with a connecting rod, and the mounting frame is provided with a hollow sleeve rod that is spring-fitted with the connecting rod.

[0013] Preferably, the push frame has a limiting compartment in the center of the front, and the connecting plate has a limiting block that is slidably fitted into the limiting compartment at one end of the outer side.

[0014] Preferably, the top inner surface of the mounting frame is provided with a pressure claw, and the bottom surface of the middle part of the mounting frame is provided with an anti-rotation plate to limit the movement of the connecting plate.

[0015] Preferably, the top surface of the watch case is movably fitted with a quick-release mechanism, which includes a spring compartment installed on the top surface of the inner cavity of the watch case. An extension rod for pressing down the connecting plate is movably fitted inside the spring compartment. The top end of the extension rod is provided with a positioning plate located at the top of the inner cavity of the spring compartment. The top surface of the positioning plate is provided with a pressure cap that penetrates the watch case and extends to its outside. A main spring is movably fitted on the outer surface of the extension rod. The top and bottom ends of the top surface of the main spring are connected to the bottom surface of the positioning plate and the bottom surface of the inner cavity of the spring compartment, respectively.

[0016] Compared with the prior art, the beneficial effects of the present invention are: Through the coordinated operation of the main locking mechanism and the auxiliary locking mechanism, the conductive frame is driven by the screw to clamp the wire. With the close fit between the contact plate and the connection frame, quick connection can be achieved with simple tools, while ensuring stable conduction under high current and reducing the risk of overheating and arcing.

[0017] By using the guide groove and the balance pin for guidance and limiting, as well as the synchronous linkage of the first and second synchronous pins, the conductive frame can precisely shrink and clamp the wire, and the insertion depth and clamping force can be controlled to avoid damaging the wire due to excessive depth or causing poor contact due to excessive looseness.

[0018] By pressing the quick-release mechanism, the extension rod is driven to press down on the connecting plate, which can instantly separate the electrical connection between the conductive frame and the electrical connection frame, realizing rapid power-off and wire removal, greatly improving the efficiency of maintenance and wire replacement and the safety of use.

[0019] During wire connection, depending on the different procedures, the wire can always be clamped to the electricity meter in one position, preventing the wire from falling off during the tightening process. It can also feed and clamp two wires at the same time, improving the convenience of operation.

[0020] In summary, this invention overcomes the shortcomings of existing technologies, achieving high-efficiency wiring, stable conductivity, precise clamping, and quick assembly and disassembly. It solves the problems of complex wiring, poor contact, inconvenient maintenance, and low safety in traditional electricity meters, and has high social value and application prospects. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram showing the structural position of the mounting frame in this invention; Figure 5 For this Figure 4 Explosion-proof diagram of the structure; Figure 6 For this Figure 5 Enlarged view of the local structure at point A; Figure 7 For this Figure 5 Enlarged view of the local structure at point B; Figure 8 This is a schematic diagram showing the structural positions of the connecting plate and the push frame in this invention; Figure 9 This is a partial cross-sectional view of the present invention; Figure 10 This is a schematic cross-sectional view of the internal structure of the present invention.

[0023] In the diagram: 100, Meter box; 1001, Transparent panel; 200, Control panel; 300, Relay; 1, Wiring board; 101, Through hole; 102, Wire hole; 103, Main locking mechanism; 1031, Main locking frame; 1032, Main baffle; 1033, First spring; 104, Secondary locking mechanism; 1041, Secondary locking frame; 1042, Protruding plate; 1043, Secondary spring; 105, slanted insert rod; 1051, Pressure strip; 2, Main rod; 21, Conical protrusion; 22, Screw; 3, Mounting frame; 301, Electrical connection frame; 3011, Electrical connection. 302. Column; 303. Claw; 304. Conductive frame; 305. Contact plate; 306. Guide wheel; 307. Balance pin; 308. First synchronous pin; 309. Second synchronous pin; 300. Connecting plate; 300. Limiting block; 300. Push frame; 300. 301. Clamping plate; 300. 302. Limiting compartment; 300. 303. Connecting rod; 300. 305. Hollow sleeve rod; 306. Guide groove; 4. Quick release mechanism; 401. Spring compartment; 402. Extension rod; 403. Positioning plate; 404. Pressure cap; 405. Main spring; 5. Anti-rotation plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0025] Example 1: Refer to Figures 1 to 10 An energy meter with a built-in high-current relay includes a meter box 100. The meter box 100 is equipped with a control panel 200 and a relay 300. The meter box 100 is equipped with a light-transmitting plate 1001 for observation. A wire guide plate 1 is embedded in the end face of the meter box 100. A through hole 101 is opened in the center of the front of the wire guide plate 1. Wire holes 102 are opened at both the left and right ends of the front of the wire guide plate 1. A conical protrusion 21 is movably fitted in the through hole 101. A main rod 2 is fixedly connected to the outer end face of the conical protrusion 21. Mounting frames 3 are fixedly installed at both ends of the inner cavity of the meter box 100. The mounting frame 3 is provided with a power connection frame 301 that slides and fits with it in the vertical direction. The power connection frame 301 is provided with a power connection post 3011 that is electrically connected to the relay 300. The inner end face of the conical protrusion 21 is fixedly connected with a screw 22 that is threadedly fitted to the mounting frame 3. With the arrangement of the main rod 2, the conical protrusion 21 and the screw 22, as the depth of the screw 22 screwed into the mounting frame 3 increases, the position of the conical protrusion 21 in the through hole 101 will also change accordingly, thereby completing the clamping and loosening operation of the wires inside and outside the wire hole 102.

[0026] Specifically, refer to Figure 2 and Figure 10 The wire threading plate 1 is provided with a main locking mechanism 103 located at the left and right ends of the through hole 101, and the wire threading plate 1 is provided with a secondary locking mechanism 104 located outside the wire hole 102. The main locking mechanism 103 includes a main locking frame 1031 that slides within the inner cavity of the wire threading plate 1. One end of the main locking frame 1031 near the through hole 101 contacts the surface of the conical protrusion 21, and the other end near the wire hole 102 contacts the surface of the external wire. The wire threading plate 1 has a main baffle 1032 located in the middle of the main locking frame 1031. A first spring 1033 connected to the main locking frame 1031 is located on the side of the main baffle 1032. Figure 2 The position of the main rod 2 is the initial position for installing external wires. When it is necessary to insert the wire into the wire hole 102, the secondary locking mechanism 104 will not cooperate with the main locking mechanism 103 to clamp the wire, thus facilitating the insertion of the wire. After the exposed cable at the end of the wire is fully inserted into the conductive frame 303, the pressure bar 1051 can be pressed down, allowing the inclined insertion rod 105 to push the secondary locking frame 1041 to move with the help of the protruding plate 1042, so that the secondary locking frame 1041 cooperates with the main locking frame 1031 to complete the clamping operation of the wire. At this time, the main rod 2 can be rotated synchronously, allowing the screw 22 to be screwed into the interior of the mounting frame 3. After the main rod 2 continues to rotate, the clamping of the wire by the main locking frame 1031 will slowly loosen, so that the insulation layer on the outside of the wire can also move into the interior of the meter box 100.

[0027] Specifically, refer to Figure 10 The secondary locking mechanism 104 includes a secondary locking frame 1041 that is slidably fitted into the inner cavity of the wire threading plate 1. One end of the secondary locking frame 1041 near the wire hole 102 is responsible for contacting the surface of the external wire. The secondary locking frame 1041 is provided with a protruding plate 1042, and a second spring 1043 is provided at both the upper and lower ends of the secondary locking frame 1041.

[0028] Specifically, refer to Figure 1 and Figure 10A sloping insert rod 105 is inserted through the top surface of the threading plate 1 and contacts the protruding plate 1042. The top of the sloping insert rod 105 is provided with a pressure strip 1051 located outside the top surface of the threading plate 1. After the downward pressure borne by the pressure strip 1051 disappears, the elastic deformation of the second spring 1043 will recover, thereby allowing the protruding plate 1042 to push the sloping insert rod 105 upward, thereby allowing the secondary lock frame 1041 to retract.

[0029] Example 2: Refer to Figures 1 to 10 The difference between this embodiment and embodiment 1 is that the mounting frame 3 is provided with a conductive frame 303. The top and bottom surfaces of the conductive frame 303 are provided with contact plates 3031 that contact the inner surface of the power receiving frame 301 to transmit electrical energy. Both ends of the conductive frame 303 are provided with balance pins 3033 to limit the opening and compression change path. The conductive frame 303 is configured as two pieces, upper and lower, which are connected by the balance pins 3033. The outer side of the conductive frame 303 is set with a flared opening to facilitate the exposed cable at the end of the wire to extend into the cavity formed by the two conductive frames 303.

[0030] Specifically, refer to Figure 7 The upper and lower ends of the inner side of the conductive frame 303 are respectively provided with a second synchronous pin 3035 and a first synchronous pin 3034 that slide and fit together. A connecting plate 304 is rotatably provided on the first synchronous pin 3034. A torsion spring connected to the first synchronous pin 3034 is provided in the connecting plate 304 to control the rotation of the connecting plate 304.

[0031] Specifically, refer to Figure 5 and Figure 7 The mounting frame 3 has pushers 305 slidably mounted on both the left and right ends of the inner side of the middle. The mounting frame 3 has a guide groove 306 for adjusting the opening and compression of the conductive frame 303 in the vertical direction. The outer side of the conductive frame 303 has a guide wheel 3032 that slidably mounts with the guide groove 306. According to the opening path of the guide groove 306, the two conductive frames 303 can be gradually compressed during the process of the conductive frame 303 extending into the mounting frame 3 and being inserted into the power receiving frame 301, so as to clamp the exposed cable of the external wire.

[0032] Specifically, refer to Figure 4 and Figure 8 The outer side of the push frame 305 is provided with a locking plate 3051 for sliding and limiting the mounting frame 3. The inner surface of the push frame 305 is provided with a connecting rod 3053. The mounting frame 3 is provided with a hollow sleeve rod 3054 that is spring-loaded with the connecting rod 3053. The hollow sleeve rod 3054 is filled with a spring, which is used to adjust and control the relative position between the connecting rod 3053 and the hollow sleeve rod 3054 through the elastic deformation of the spring. When the wire is installed, the outer surface of the contact plate 3031 makes complete contact with the inner surface of the power receiving frame 301, and at the same time, the spring in the hollow sleeve rod 3054 is compressed.

[0033] Specifically, refer to Figure 5 and Figure 8 The push frame 305 has a limiting chamber 3052 in the center of the front. The outer end of the connecting plate 304 has a limiting block 3041 that is slidably fitted into the limiting chamber 3052. As the screw 22 continues to screw in, the inner end of the screw 22 contacts the surface of the connecting plate 304. The connecting plate 304 will be driven by the continuous screwing in of the screw 22 to move the conductive frame 303 as a whole, so that the guide wheel 3032 moves inside the guide groove 306. During the movement, the first synchronous pin 3034 and the second synchronous pin 3035 will push the push frame 305 to move, so that the upper and lower ends of the push frame 305 contact the pressure claw 302, thereby causing the internal torsion spring of the pressure claw 302 to deform, so that the power receiving frame 301 continuously clamps the conductive frame 303.

[0034] Specifically, refer to Figure 5 The mounting frame 3 has a pressure claw 302 rotatably mounted on the top inner side. The bottom surface of the inner cavity of the mounting frame 3 has an anti-rotation plate 5 that provides a limit for the connecting plate 304. When the pressure claw 302 is rotatably connected to the mounting frame 3, a torsion spring is mounted on its shaft to control the axial rotation of the pressure claw 302. When the push frame 305 contacts it and the push frame 305 continues to move, the pressure claw 302 can rotate along the axial direction, thereby compressing the power receiving frame 301 in the vertical direction, so that the power receiving frame 301 and the contact plate 3031 can make complete contact, and lock the conductive frame 303 in the power receiving frame 301 to prevent the contact surface or contact point from loosening.

[0035] For other undescribed structures, refer to Example 1.

[0036] Example 3: Reference Figures 1 to 10The difference between this embodiment and embodiment 2 is that a quick-release mechanism 4 is movably fitted on the top surface of the watch case 100. The quick-release mechanism 4 includes a spring compartment 401 installed on the top surface of the inner cavity of the watch case 100. An extension rod 402 for pressing down the connecting plate 304 is movably fitted inside the spring compartment 401. A positioning plate 403 is provided at the top of the extension rod 402 and located at the top of the inner cavity of the spring compartment 401. A pressure cap 404 is provided on the top surface of the positioning plate 403, penetrating the watch case 100 and extending to its outside. A main spring 405 is movably fitted on the outer surface of the extension rod 402. The top and bottom ends of the main spring 405 are respectively connected to the bottom surface of the positioning plate 403 and the bottom surface of the inner cavity of the spring compartment 401. The connection, through the quick-release mechanism 4, allows for rapid wire disconnection when the wire needs to be quickly released. The pressure cap 404 can be pressed down, causing the bottom end of the extension rod 402 to contact the top end of the connecting plate 304. This allows the connecting plate 304 to rotate along its pivot axis, swinging it to the lower side of the quick-release mechanism 4. Simultaneously, the spring in the hollow sleeve rod 3054 recovers its elastic deformation, pushing the push frame 305 back. Under the action of the push frame 305's retraction, the conductive frame 303 moves back with the wire, thus disconnecting the electrical connection between the contact plate 3031 and the power receiving frame 301, enabling rapid wire disconnection and power off.

[0037] Other undescribed structures are described in Examples 1 and 2.

[0038] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An electric energy meter with built-in high current relay, comprising a meter case (100), characterized in that: The meter box (100) is equipped with a control panel (200) and a relay (300). The meter box (100) is equipped with a light-transmitting plate (1001) for observation. A wire guide plate (1) is embedded in the end face of the meter box (100). A through hole (101) is opened in the middle of the front of the wire guide plate (1). Wire holes (102) are opened at both the left and right ends of the front of the wire guide plate (1). A conical protrusion (21) is movably fitted in the through hole (101). A main rod (2) is fixedly connected to the outer end face of the conical protrusion (21). The inner cavity of the meter box (100) is fixedly installed with mounting frames (3) at both ends. The mounting frame (3) is provided with a power connection frame (301) that slides and fits with it in the vertical direction. The power connection frame (301) is provided with a power connection post (3011) that is electrically connected to the relay (300). The inner end face of the conical protrusion (21) is fixedly connected with a screw (22) that is threadedly fitted with the mounting frame (3).

2. The electric energy meter with built-in high current relay according to claim 1, characterized in that: The threading plate (1) is provided with a main locking mechanism (103) located at the left and right ends of the through hole (101), and the threading plate (1) is provided with a secondary locking mechanism (104) located outside the wire hole (102). The main locking mechanism (103) includes a main locking frame (1031) that slides within the inner cavity of the threading plate (1). The end of the main locking frame (1031) near the through hole (101) is responsible for contacting the surface of the conical protrusion (21), and the end of the main locking frame (1031) near the wire hole (102) is responsible for contacting the surface of the external wire. The threading plate (1) is provided with a main baffle (1032) located in the middle of the main locking frame (1031), and the side of the main baffle (1032) is provided with a first spring (1033) connected to the main locking frame (1031).

3. An energy meter with a built-in high-current relay according to claim 2, characterized in that: The secondary locking mechanism (104) includes a secondary locking frame (1041) that slides within the inner cavity of the wire threading plate (1). The end of the secondary locking frame (1041) near the wire hole (102) is responsible for contacting the surface of the external wire. The secondary locking frame (1041) is provided with a protruding plate (1042), and the upper and lower ends of the secondary locking frame (1041) are provided with a second spring (1043).

4. An energy meter with a built-in high-current relay according to claim 3, characterized in that: The top surface of the threading plate (1) is through which a sloping insert (105) is inserted, which contacts the protruding plate (1042). The top of the sloping insert (105) is provided with a pressure strip (1051) located outside the top surface of the threading plate (1).

5. An energy meter with a built-in high-current relay according to claim 1, characterized in that: The mounting frame (3) is provided with a conductive frame (303). The top and bottom surfaces of the conductive frame (303) are provided with a contact plate (3031) that contacts the inner surface of the power receiving frame (301) to transmit electrical energy. Both ends of the conductive frame (303) are provided with a balance pin (3033) that provides a limit for the opening and compression change path.

6. An energy meter with a built-in high-current relay according to claim 5, characterized in that: The upper and lower ends of the inner side of the conductive frame (303) are respectively provided with a second synchronous pin (3035) and a first synchronous pin (3034) that slide and fit together. A connecting plate (304) is rotatably provided on the first synchronous pin (3034).

7. An energy meter with a built-in high-current relay according to claim 6, characterized in that: The mounting frame (3) has pushers (305) slidably fitted on both the left and right sides of the inner side of the middle. The mounting frame (3) has a guide groove (306) for the conductive frame (303) to open and compress in the vertical direction. The conductive frame (303) has a guide wheel (3032) slidably fitted with the guide groove (306) on the outer side.

8. An energy meter with a built-in high-current relay according to claim 7, characterized in that: The outer side of the push frame (305) is provided with a card plate (3051) for sliding and limiting the mounting frame (3), the inner surface of the push frame (305) is provided with a connecting rod (3053), and the mounting frame (3) is provided with a hollow sleeve rod (3054) that is spring-fitted with the connecting rod (3053).

9. An energy meter with a built-in high-current relay according to claim 8, characterized in that: The push frame (305) has a limiting chamber (3052) in the center of the front, and a limiting block (3041) is provided at one end of the outer side of the connecting plate (304) and is slidably fitted into the limiting chamber (3052).

10. An energy meter with a built-in high-current relay according to claim 9, characterized in that: The mounting frame (3) has a pressure claw (302) rotatably mounted on the top inner side, and the bottom surface of the inner cavity of the mounting frame (3) has an anti-rotation plate (5) that provides a limit for the connecting plate (304).

Images