A single-phase electric energy meter connector

Abstract

The utility model relates to the field of electric energy meter discloses a single -phase electric energy meter connector, including base, the inside fixedly connected with seat body of base, the inside fixedly connected with a plurality of lower pin of seat body, the inside setting of seat body has drive mechanism, the inside rotatoryly connected with short -circuit pin subassembly of base, the utility model discloses when needing short -circuit operation, pull up the pin seat and make it rotate around base, and the pin on pin seat rotates along with, and its clamping groove and the short -circuit contact part of lower pin are separated, lead to the pin and lower pin disconnect, and the pin is powered off, and the accurate resistance and touch on the short -circuit contact portion of two adjacent lower pins, realize the short -circuit of adjacent lower pin, at this moment, even if the operator touches the pin, will not be electrocuted, and when changing the meter or not needing short -circuit, the clamping groove of pin is re -engaged on the short -circuit contact portion, and the pin and lower pin are connected, and the lead seal hole of cover plate and electric energy meter connection realize lead seal, further guarantee the use safety.

Description

Technical Field

[0001] This utility model relates to the field of electricity meters, and in particular to a connector for a single-phase electricity meter. Background Technology

[0002] With the transformation of the State Grid, power grid companies have begun to vigorously promote smart grids, resulting in a significant increase in the use of electricity meters and meter boxes. An electricity meter is an instrument used to measure electrical energy, also known as a kilowatt-hour meter. With the upgrading of the power grid, single-phase electricity meters are widely used in the power and electrical field. The State Grid stipulates that electricity meter installation should be achieved through dedicated electricity meter connectors; wires must not be directly connected to the electricity meter. The electricity meter connector plugs should preferably be interference fit plugs to ensure fast, convenient, safe, and reliable installation.

[0003] To ensure safe meter replacement under live conditions, existing electricity meter connectors require temporary short-circuit wires for temporary power supply. This short-circuit method is cumbersome and unsafe. Therefore, connectors with automatic short-circuit mechanisms have emerged on the market. These mechanisms use a return spring to bring the short-circuit conductive plate into contact with two adjacent pins, thus achieving automatic short-circuiting.

[0004] Although this connector solves the defects of the temporary short-circuit wire method, the power supply to the two adjacent pins of the connector is not cut off during short-circuiting, and the pins are in a live state. When changing the meter, the operator can easily touch the pins, which can easily cause safety accidents and is not very safe. In addition, the existing connector is connected by a pin on one end and a terminal on the other end, which makes the wiring of the contact relatively cumbersome. Therefore, a single-phase energy meter connector is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a single-phase energy meter connector, which aims to improve the existing single-phase energy meter connector. In this connector, the power supply to the two adjacent pins is not disconnected, and the pins are in a live state. When changing the meter, the operator can easily touch the pins, which can easily cause safety accidents and is not very safe. In addition, the existing connector is connected by a pin at one end and a terminal block at the other end, which makes the wiring of the contact cumbersome.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a single-phase energy meter connector, including a base, a seat body fixedly connected inside the base, a plurality of lower pins fixedly connected inside the seat body, and a driving mechanism provided inside the seat body; a shorting pin assembly rotatably connected inside the base, the shorting pin assembly including a pin seat, a cover plate fixedly connected inside the base, a pin fixedly connected inside the pin seat, a shorting conductive plate fixedly connected inside the pin seat, a contact piece fixedly connected to the side of the lower pin, a shorting contact portion fixedly connected to the side of the lower pin, a second snap-fit ​​groove opened inside the pin, a shorting contact portion snapped into the side of the second snap-fit ​​groove, a shorting contact portion snapped into the side of the shorting conductive plate, and a pin snapped into the side of the shorting conductive plate; the driving mechanism includes a driving plate.

[0007] As a further description of the above technical solution: a drive rod is fixedly connected inside the lower insertion pin, a ball is slidably connected inside the lower insertion pin, the ball is elastically connected to the drive rod through a spring, a cam is fixedly connected inside the drive plate, and a drive rod is rotatably connected to the side of the cam.

[0008] As a further description of the above technical solution: the seat body is rotatably connected to a rotating shaft, the drive plate has a through hole inside, and the rotating shaft is slidably connected to a through hole on its side.

[0009] As a further description of the above technical solution: a snap-fit ​​post is fixedly connected to the side of the cover plate, a snap-fit ​​groove is opened inside the base, a snap-fit ​​groove is snapped into the side of the snap-fit ​​post, and a lead-sealing hole is opened inside the cover plate.

[0010] As a further description of the above technical solution: a guide post is fixedly connected to the side of the cover plate, a guide hole is opened inside the base, and the guide post is engaged with the guide hole on its side.

[0011] As a further description of the above technical solution: a positioning boss is fixedly connected inside the base body, and a positioning hole is opened inside the pin socket, and a positioning boss is fixedly connected inside the positioning hole.

[0012] As a further description of the above technical solution: a positioning post is fixedly connected to the side of the base, and a locking hole is opened inside the pin socket, and the positioning post is engaged inside the locking hole.

[0013] As a further description of the above technical solution: A connecting plate is fixedly connected to the side of the base, a connecting seat one is fixedly connected to the side of the connecting plate, a support plate one is rotatably connected inside the connecting seat one, a connecting seat two is rotatably connected to the side of the support plate one away from the connecting seat one, a telescopic rod is fixedly connected to the side of the connecting seat two away from the connecting seat one, a telescopic frame is elastically connected to the side of the telescopic rod through a damping spring, a connecting seat three is fixedly connected to the side of the telescopic rod away from the connecting seat two, a support plate two is rotatably connected inside the connecting seat three, a connecting seat four is fixedly connected to the side of the support plate two away from the connecting seat three, and an outer protective shell is fixedly connected to the side of the connecting seat four.

[0014] This utility model has the following beneficial effects: 1. In this utility model, when a short-circuit operation is required, the pin holder is pulled up and rotated around the base. The pin on the pin holder rotates along with it, and its locking groove separates from the short-circuit contact part of the lower pin, causing the pin to disconnect from the lower pin. The pin is de-energized and precisely abuts against the short-circuit contact parts of two adjacent lower pins, achieving a short circuit between the adjacent lower pins. At this time, even if the operator touches the pin, there will be no electric shock. When changing the meter or when short-circuiting is not required, the locking groove of the pin re-engages with the short-circuit contact part, and the pin and the lower pin are reconnected. The lead seal hole on the cover can be connected to the energy meter to achieve lead sealing, further ensuring the safety of use.

[0015] 2. In this utility model, the outer protective shell is displaced towards the connecting plate, and at the same time, the connecting plate side forms a reverse compression with the pair of support plates 1 through the connecting seat. This causes support plates 1 and 2 to rotate under the compression force. This rotation is converted into a horizontal thrust, which drives the telescopic rods on both sides to slide outward of the telescopic frame through the connecting seat 2 and connecting seat 3 respectively. The relative movement of the two sets of telescopic rods stretches the damping springs on both sides. At the same time, the telescopic frame guides and limits the sliding of the telescopic rods. Finally, the damping springs convert most of the impact energy into elastic potential energy and gradually release it, thus significantly reducing the impact force. Attached Figure Description

[0016] Figure 1 This is a three-dimensional cross-sectional schematic diagram of the telescopic frame of a single-phase energy meter connector proposed in this utility model. Figure 2 This is a three-dimensional schematic diagram of a single-phase energy meter connector proposed in this utility model. Figure 3 A three-dimensional schematic diagram illustrating the layered structure of a single-phase energy meter connector proposed in this utility model; Figure 4 This is a three-dimensional cross-sectional schematic diagram of a single-phase energy meter connector proposed in this utility model; Figure 5This is a three-dimensional schematic diagram of the base and internal structure of a single-phase energy meter connector proposed in this utility model.

[0017] Legend: 10. Base; 101. Snap-fit ​​groove 1; 102. Guide hole; 11. Seat body; 111. Rotating shaft; 112. Positioning boss; 113. Positioning post; 12. Lower pin; 121. Contact piece; 122. Short-circuit contact part; 20. Drive mechanism; 21. Drive plate; 211. Cam part; 212. Through hole; 22. Drive rod; 23. Ball bearing; 24. Spring; 30. Short-circuit pin assembly; 31. Pin holder; 311. Positioning Hole; 312, Locking Hole; 32, Cover Plate; 322, Lead Seal Hole; 323, Guide Post; 321, Snap-fit ​​Post; 33, Pin; 331, Snap-fit ​​Slot II; 34, Short-circuit Conductive Plate; 41, Connecting Plate; 42, Connecting Seat I; 43, Support Plate I; 44, Connecting Seat II; 45, Telescopic Rod; 46, Vibration Damping Spring; 47, Telescopic Frame; 48, Connecting Seat III; 49, Support Plate II; 410, Connecting Seat IV; 411, Outer Protective Shell. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 3-5This utility model provides an embodiment of a single-phase energy meter connector, including a base 10, a pin holder 31 rotatably mounted on a positioning boss 112 on a base body 11, thereby ensuring that the pin holder 31 can reliably rotate on the base body 11, which is beneficial to improving the working reliability of the single-phase energy meter connector. The positioning boss 112 is fixedly connected inside the base body 11, and multiple lower pins 12 are provided on the base body 11. A positioning hole 311 is opened inside the pin holder 31, and the positioning boss 112 is fixedly connected inside the positioning hole 311, thus forming a rotatable connection between the pin holder 31 and the base body 11. A positioning post 113 is fixedly connected to the side of the base body 11, and a locking hole 312 is opened inside the pin holder 31 for locking. A positioning pin 113 is engaged inside the hole 312. A seat body 11 is fixedly connected inside the base 10. A rotating shaft 111 is rotatably connected inside the seat body 11. A through hole 212 is opened inside the drive plate 21. The through hole 212 is slidably connected to the side of the rotating shaft 111, thus forming a rotatable connection between the drive plate 21 and the rotating shaft 111. Multiple lower pins 12 are fixedly connected inside the seat body 11. A drive rod 22 is fixedly connected inside the lower pins 12. A ball bearing 23 is slidably connected inside the lower pins 12. The ball bearing 23 is elastically connected to the drive rod 22 through a spring 24. A cam part 211 is fixedly connected inside the drive plate 21. The drive rod 22 is rotatably connected to the side of the cam part 211, thus forming a drive rod 22. In conjunction with the cam part 211, a drive mechanism 20 is provided inside the base 11; a shorting pin assembly 30 is rotatably connected inside the base 10, the shorting pin assembly 30 includes a pin seat 31, a guide post 323 is fixedly connected to the side of the cover plate 32, a guide hole 102 is opened inside the base 10, the guide hole 102 is snapped into the side of the guide post 323, the cover plate 32 is fixedly connected inside the base 10, a snap-fit ​​post 321 is fixedly connected to the side of the cover plate 32, a snap-fit ​​groove 101 is opened inside the base 10, a snap-fit ​​groove 331 is snapped into the side of the snap-fit ​​post 321, a lead sealing hole 322 is opened inside the cover plate 32, a pin 33 is fixedly connected inside the pin seat 31, and the pin seat 31 has a lead sealing hole 322 inside the cover plate 32, and a pin 33 is fixedly connected inside the pin seat 31. A shorting conductive plate 34 is fixedly connected to the pin seat 31. When the pin seat 31 is rotated, the two locking holes 312 on the pin seat 31 can be respectively engaged with the positioning post 113. The positioning post 113 can keep the pin seat 31 in the open or closed position. A contact piece 121 is fixedly connected to the side of the lower pin 12. A shorting contact part 122 is fixedly connected to the side of the lower pin 12. A second snap-fit ​​groove 331 is opened inside the pin 33. The size of the pin 33 inside the pin seat 31 matches that of the lower pin 12. The shorting contact part 122 is snapped into the side of the snap-fit ​​groove 331. The shorting contact part 122 is snapped into the side of the shorting conductive plate 34. The pin 33 is snapped into the side of the shorting conductive plate 34. The drive mechanism 20 includes a drive plate 21.

[0020] Reference Figures 1-2A connecting plate 41 is fixedly connected to the side of the base 10. A connecting seat 42 is fixedly connected to the side of the connecting plate 41. A support plate 43 is rotatably connected inside the connecting seat 42. A connecting seat 44 is rotatably connected to the side of the support plate 43 away from the connecting seat 42. A telescopic rod 45 is fixedly connected to the side of the connecting seat 44 away from the connecting seat 42. A telescopic frame 47 is elastically connected to the side of the telescopic rod 45 through a damping spring 46. One side of the damping spring 46 is fixedly connected to the side of the telescopic rod 45, and the other side is fixedly connected to the telescopic frame 47. Inside, a third connecting seat 48 is fixedly connected to the side of the telescopic rod 45 away from the second connecting seat 44. A second supporting plate 49 is rotatably connected inside the third connecting seat 48. A fourth connecting seat 410 is fixedly connected to the side of the second supporting plate 49 away from the third connecting seat 48. An outer protective shell 411 is fixedly connected to the side of the fourth connecting seat 410. There are two sets of connecting plates 41, 42, 43, 44, 45, 47, 48, 49, 410, and 411.

[0021] Working Principle: The working principle of this single-phase energy meter connector revolves around the base 10 as its core carrier. The overall operation is stable and convenient. The seat 11 inside the base 10 provides the mounting base for the lower pins 12. Multiple lower pins 12 are arranged in an orderly manner on the seat 11. The contact piece 121 at one end is the key structure for wiring, while the drive mechanism 20 provides power support for the opening of the contact piece 121. The working process of the drive mechanism 20 is clear: the rotating shaft 111 on the seat 11 passes through the through hole 212 of the drive plate 21, forming a stable rotational connection, ensuring that the drive plate 21 can rotate reliably. When wiring is required, rotating the drive plate 21 causes the cam portion 211 on its surface to rotate and abut against the drive rod 22 inside the lower pin 12, pushing the drive rod 22 to move axially along the lower pin 12. The drive rod 22 transmits force to the ball bearing 23 via the spring 24. The ball bearing 23 pushes against the contact piece 121, causing the previously closed contact pieces 121 to elastically open. At this time, the external wire can be easily inserted into the lower pin 12. After wiring is completed, the drive plate 21 is rotated in the opposite direction, and the cam part 211 releases its resistance to the drive rod 22. The spring 24 returns to its original position, causing the drive rod 22 and the ball bearing 23 to retract. The contact piece 121 tightens and clamps the wire, achieving a stable connection. The entire process requires no complicated operation, and the wiring is convenient and efficient. The short-circuit and on / off functions are achieved through the linkage of the short-circuit pin assembly 30. The cover plate 32 is precisely matched with the guide holes 102 of the base 10 through the guide posts 323 on both sides, and then fixed by the snap-fit ​​post 321 and the snap-fit ​​groove 101. This ensures convenient assembly and provides a stable limit for the pin holder 31. When a short-circuit operation is required, pull up the pin holder 31 to rotate it around the base 10. The pin 33 on the pin holder 31 rotates along with it, and its locking groove 331 separates from the short-circuit contact 122 of the lower pin 12, causing the pin 33 to disconnect from the lower pin 12 and de-energize the pin 33. At the same time, the short-circuit conductive plate 34 on the pin holder 31 moves synchronously and precisely abuts against the short-circuit contact 122 of two adjacent lower pins 12, achieving a short circuit between adjacent lower pins 12. At this time, even if the operator touches the pin 33, there will be no electric shock, greatly improving safety. When the meter is replaced or short-circuiting is not required, the lower pin holder 31 resets, and the locking groove 331 of the pin 33 re-engages on the short-circuit contact 122. The pin 33 and the lower pin 12 are connected again, the short-circuit conductive plate 34 separates from the short-circuit contact 122, the short-circuit function is released, and the lead-sealing hole 322 on the cover plate 32 can be connected to the energy meter to achieve lead sealing, further ensuring safety. Throughout the entire operation, all components work closely together. The drive mechanism 20 ensures convenient wiring, the short-circuit pin assembly 30 achieves safe short-circuiting and on / off switching, and the assembly structure of the base 10 and the cover plate 32 ensures overall stability. This connector, through its simple mechanical linkage design, achieves a simple structure and stable and reliable operation without complex electrical control components. It also has the advantages of convenient wiring, high safety, and high meter replacement efficiency, fully meeting the usage requirements of single-phase energy meters.

[0022] When this single-phase energy meter connector is installed on a single-phase energy meter, it can effectively resist damage to the internal pins 33 and the energy meter body caused by external accidents such as collisions, ensuring stable operation of the equipment. The protective structure uses the base 10 as the installation base. Connecting plates 41 are symmetrically fixed on both sides of the base 10. The connecting plates 41 form a solid connection with the single-phase energy meter through the snap-fit ​​structure on the side, ensuring the integrity of the connector and the energy meter after assembly. On the other hand, it provides reliable installation support for subsequent protective components. Connecting seat 42 is fixedly connected to the outside of the connecting plate 41. The supporting plate 43 is connected to the inside of the connecting seat 42 through a rotating joint. The end of the supporting plate 43 away from the connecting seat 42 is also connected to the connecting seat 44 through a rotating joint, forming a flexible transmission structure. A telescopic rod 45 is fixedly installed on the side of connector 2 44. The telescopic rod 45 is adapted to slide inside the telescopic frame 47. A set of telescopic rods 45 and a matching structure with the telescopic frame 47 are symmetrically arranged on both sides of the connector. A damping spring 46 is connected between the opposite sides of the two sets of telescopic rods 45. The damping spring 46 is always in a pre-tensioned state, providing basic elastic buffering capacity for the protective structure. Connector 3 48 is fixed to the end of the telescopic rod 45 away from connector 2 44. Support plate 2 49 is connected to the inside of connector 3 48 through a rotating joint. The other end of support plate 2 49 is connected to connector 410 through a rotating joint. An outer protective shell 411 is fixed to the outside of connector 410. The outer protective shell 411 completely wraps around both sides of the connector, forming the first protective barrier to directly resist external impact. When an external object collides with the connector, the impact force first acts on the outer protective shell 411, causing the outer protective shell 411 to move closer to the connecting plate 41. As the outer protective shell 411 moves, its inner side pushes the second support plate 49 through the fourth connecting seat 410. At the same time, the side of the connecting plate 41 exerts a reverse compression on the first support plate 43 through the first connecting seat 42, causing the first support plate 43 and the second support plate 49 to rotate under the compression force. Since the first support plate 43 and the second connecting seat 44, and the second support plate 49 and the third connecting seat 48 are all rotatably connected, this rotation is converted into a horizontal thrust, which drives the telescopic rods 45 on both sides to slide outwards towards the telescopic frame 47 through the second connecting seat 44 and the third connecting seat 48 respectively. During this process, the relative movement of the two sets of telescopic rods 45 stretches the damping springs 46 on both sides. The damping springs 46 absorb the kinetic energy generated by the impact by their own elastic deformation. At the same time, the telescopic frame 47 guides and limits the sliding of the telescopic rods 45 to prevent the protective structure from shifting. Through the coordinated cooperation of the above-mentioned multi-stage transmission and buffer structure, the external impact force will be initially borne by the outer protective shell 411, transmitted by the force of the first support plate 43 and the second support plate 49, guided by the sliding of the telescopic rods 45, and finally converted into elastic potential energy by the damping springs 46 and gradually released, thus significantly reducing the impact force.This layered buffer and multi-stage stress relief design effectively isolates the impact of external collisions on the internal pins 33, core components of the connector, and the single-phase energy meter, preventing internal components from deforming, making poor contact, or being damaged due to impact. At the same time, the secure connection between the connecting plate 41 and the energy meter further enhances the overall impact resistance, ensuring that the single-phase energy meter connector can maintain stable performance in complex operating environments and extending the service life of the equipment.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A single-phase energy meter connector, comprising a base (10), characterized in that: The base (10) is fixedly connected to the seat body (11), and the seat body (11) is fixedly connected to a plurality of lower pins (12). The seat body (11) is provided with a drive mechanism (20). The base (10) is rotatably connected to a shorting pin assembly (30), which includes a pin holder (31). The base (10) is fixedly connected to a cover plate (32). The pin holder (31) is fixedly connected to a pin (33). The pin holder (31) is fixedly connected to a shorting conductive plate (34). The side of the lower pin (12) is fixedly connected to a contact piece (121). The side of the lower pin (12) is fixedly connected to a shorting contact part (122). The pin (33) has a snap-fit ​​groove (331) inside. The side of the snap-fit ​​groove (331) is snapped with the shorting contact part (122). The side of the shorting conductive plate (34) is snapped with the shorting contact part (122). The side of the shorting conductive plate (34) is snapped with the pin (33). The drive mechanism (20) includes a drive plate (21).

2. A single-phase energy meter connector according to claim 1, characterized in that: The lower insert (12) is fixedly connected to a drive rod (22), and the lower insert (12) is slidably connected to a ball (23). The drive rod (22) is elastically connected to the ball (23) via a spring (24). The drive plate (21) is fixedly connected to a cam (211), and the side of the cam (211) is rotatably connected to the drive rod (22).

3. A single-phase energy meter connector according to claim 1, characterized in that: The seat (11) is rotatably connected to a rotating shaft (111), the drive plate (21) has a through hole (212) inside, and the rotating shaft (111) is slidably connected to a through hole (212) on its side.

4. A single-phase energy meter connector according to claim 1, characterized in that: The cover plate (32) is fixedly connected to a snap-fit ​​post (321) on its side. The base (10) has a snap-fit ​​groove one (101) inside. The snap-fit ​​post (321) has a snap-fit ​​groove two (331) on its side. The cover plate (32) has a lead-sealing hole (322) inside.

5. A single-phase energy meter connector according to claim 1, characterized in that: The cover plate (32) is fixedly connected to the side of a guide post (323), and the base (10) has a guide hole (102) inside. The guide post (323) is engaged with the guide hole (102) on its side.

6. A single-phase energy meter connector according to claim 1, characterized in that: The seat (11) is fixedly connected to a positioning boss (112), and the pin seat (31) is provided with a positioning hole (311), and the positioning hole (311) is fixedly connected to a positioning boss (112).

7. A single-phase energy meter connector according to claim 1, characterized in that: The side of the base (11) is fixedly connected to a positioning post (113), and the inside of the pin seat (31) is provided with a locking hole (312), and the positioning post (113) is engaged inside the locking hole (312).

8. A single-phase energy meter connector according to claim 1, characterized in that: A connecting plate (41) is fixedly connected to the side of the base (10). A connecting seat one (42) is fixedly connected to the side of the connecting plate (41). A support plate one (43) is rotatably connected inside the connecting seat one (42). A connecting seat two (44) is rotatably connected to the side of the support plate one (43) away from the connecting seat one (42). A telescopic rod (45) is fixedly connected to the side of the connecting seat two (44) away from the connecting seat one (42). A telescopic frame (47) is elastically connected to the side of the telescopic rod (45) through a damping spring (46). A connecting seat three (48) is fixedly connected to the side of the telescopic rod (45) away from the connecting seat two (44). A support plate two (49) is rotatably connected inside the connecting seat three (48). A connecting seat four (410) is fixedly connected to the side of the connecting seat four (410). An outer protective shell (411) is fixedly connected to the side of the connecting seat four (410).

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