Fastening connection device of electric energy meter cable interface

Abstract

The invention provides a fastening connection device for a cable interface of an electric energy meter, which is characterized in that a plurality of current-conducting plates are arranged in a shell of the electric energy meter, a fixing column is arranged at the upper end of each current-conducting plate, the top end of each fixing column is sleeved with a fastening bolt, a pressing piece is fixed on each fixing column through each fastening bolt, and a fixing column pin is embedded in the upper part of each fixing column; the lower side of the current-conducting plate is provided with a wiring terminal, the current-conducting plate and the wiring terminal are locked by the fastening bolt, and the wiring terminal is connected with a corresponding cable through a cold-pressed terminal arranged on the wiring terminal. According to the invention, the stability and reliability of multi-cable connection are improved, the mounting and dismounting processes of cable interfaces are simplified, and the waterproof and dustproof performance of the whole device is improved.

Description

Technical Field

[0001] The invention relates to the field of mechanical technology, and in particular to a fastening connection device for an electric energy meter cable interface. Background Art

[0002] With the rapid development of smart grids, the accuracy, reliability and safety requirements of electric energy meters, as important metering equipment in power systems, are constantly increasing. Traditional electric energy meter wiring methods usually rely on simple bolts or snap-on connections. Although they are easy to install, they are prone to loosening and poor contact during long-term use, which in turn leads to power metering errors, equipment failures, and even power safety accidents. Especially in outdoor environments or harsh working conditions, such as high temperature, high humidity, vibration or chemical corrosion environments, the looseness and poor contact problems of the electric energy meter cable interface are more significant. Therefore, how to improve the connection stability of the electric energy meter cable interface and avoid loosening and corrosion during long-term operation has become an important topic in the current technical field.

[0003] In the related technologies, single-cable fastening connectors are mostly used. The design of this type of device is mostly simple mechanical connection, with a relatively simple structure, and is mainly used to safely connect cables to conductors. However, it usually does not have the function of connecting multiple cables, and its waterproof and dustproof performance is limited, and it is easily affected by the environment. There are also waterproof and dustproof cable connectors. This type of connector is usually used in outdoor equipment, such as power equipment such as electricity meters, which can effectively prevent water and dust from entering the connection part to ensure the stability and safety of the circuit. Although these devices have certain protection functions, their design is mainly focused on single cable connection, and the fastening strength and bearing capacity are usually limited. Summary of the invention

[0004] The purpose of the present invention is to provide a fastening connection device for the cable interface of an electric energy meter, so as to solve the technical problems of how to fasten the interface, facilitate installation and disassembly, and be waterproof and dustproof.

[0005] On the one hand, a fastening connection device for an electric energy meter cable interface is provided, comprising:

[0006] A plurality of conductive plates are arranged in the housing of the electric energy meter, a fixing column is arranged at the upper end of the conductive plate, a fastening bolt is sleeved on the top end of the fixing column, the fastening bolt fixes a pressing sheet on the fixing column, and a fixing column pin is embedded in the upper part of the fixing column;

[0007] A wiring terminal is arranged at the lower side of the conductive plate, the conductive plate and the wiring terminal are locked by the fastening bolts, and the wiring terminal is connected to the corresponding cable through a cold-pressed terminal arranged thereon.

[0008] Preferably, a plurality of side-by-side grooves are provided in one side of the shell, a plurality of side-by-side conductive plates are embedded in the grooves, and one end of the conductive plate passes through the shell.

[0009] Preferably, a fixing column is arranged on the upper surface of the conductive plate, and a concave sawtooth is arranged on the bottom of the conductive plate, and the concave sawtooth is fitted to the cable.

[0010] Preferably, the bottom of the fixing column is connected to the conductive plate, and a through hole is horizontally arranged on the upper portion of the fixing column.

[0011] Preferably, the fixing column pin is embedded in the through hole and inserted into the fastening bolt. When the fastening bolt is tightened on the fixing column, the fixing column pin applies torque and pre-tightening force to the fastening bolt to prevent the fastening bolt from loosening and falling off.

[0012] Preferably, one end of the wiring terminal is embedded in the corresponding cable, and the other end is fixed on the conductive plate.

[0013] Preferably, the pressing piece is spiral-shaped, and when the fixing pin is pushed away, it drives the conductive plate and the connecting terminal to separate from each other through rebound.

[0014] Preferably, an external terminal is provided at the other end of the conductive plate, and the external terminal can be connected to other cables.

[0015] In summary, the implementation of the embodiments of the present invention has the following beneficial effects:

[0016] The fastening and connecting device of the cable interface of the electric energy meter provided by the present invention can simultaneously connect multiple cable interfaces through a multi-body structural design. The fastening bolt is combined with the clamping plate to ensure the reliable connection of each terminal and the conductive plate, thereby improving the stability and reliability of the multi-cable connection. By applying torque to the fastening bolt, the fastening and loosening operations of the conductive plate and the terminal can be realized, simplifying the installation and disassembly process of the cable interface. The conductive plate and the terminal are tightly fitted by the clamping plate, and the force distribution design of the bolt is combined to provide a large fastening bearing capacity. The cable interface can maintain a stable connection even under high current load, reducing the risk of loosening and poor electrical contact. The upper and lower fitting structures of the fastening bolt and the clamping plate, as well as the tight connection design of the cold-pressed terminal and the cable line, help to improve the waterproof and dustproof performance of the overall device, and are suitable for electric energy meter applications outdoors or in harsh environments, extending the service life of the equipment and improving the environmental adaptability of the equipment. The entire device improves the fastening strength of the cable interface through an optimized mechanical structure design to ensure the stability of the contact point during long-term use. In particular, the multi-point connection method between the conductive plate and the terminal block improves the reliability of the interface and reduces electrical failures caused by looseness or poor contact. Each component can be disassembled and assembled independently. This modular design facilitates subsequent maintenance, repair or replacement, reduces equipment downtime, and improves maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0018] Figure 1 It is a schematic diagram of a fastening connection device of an electric energy meter cable interface in an embodiment of the present invention.

[0019] Figure 2 The figure is an overall schematic diagram of a fastening connection device for a cable interface of an electric energy meter in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 2 FIG. 1 is a schematic diagram of an embodiment of a fastening connection device for an electric energy meter cable interface provided by the present invention. In this embodiment, it includes:

[0022] A plurality of conductive plates 2 are arranged in the housing 1 of the electric energy meter. A fixing column 3 is arranged at the upper end of the conductive plate 2. A fastening bolt 4 is sleeved on the top of the fixing column 3. The fastening bolt 4 fixes a compression plate 5 on the fixing column 3. A fixing column pin 6 is embedded in the upper part of the fixing column 3. A wiring terminal 7 is arranged on the lower side of the conductive plate 2. The conductive plate 2 and the wiring terminal 7 are locked by the fastening bolt 4. The wiring terminal 7 is connected to the corresponding cable 9 through the cold-pressed terminal 8 arranged thereon. It can be understood that the housing 1 is the basis of the entire connection device. The upper end thereof is provided with a fastening bolt 4, a compression plate 5, and a fixing column pin 6. The conductive plate 2, the wiring terminal 7, and the external terminal 10 are arranged in the middle. The fastening bolt 4 and the compression plate 5 are connected up and down. The cable 9 is connected to the wiring terminal 7 through the cold-pressed terminal 8. The conductive plate 2 is an external circuit device and a movable component of the entire mechanism. The conductive plate 2 is externally connected to the cable 9, which is responsible for connecting with the cable interface of the electric energy meter. The wiring terminal 7 is integrated with the cable 9 through the cold-pressed terminal 8 .

[0023] In one embodiment, a plurality of grooves arranged side by side are provided in one side of the housing 1, and a plurality of the conductive plates 2 arranged side by side are embedded in the grooves, and one end of the conductive plate 2 passes through the housing 1. A fixing column 3 is provided on the upper surface of the conductive plate 2, and a concave serration is provided on the bottom of the conductive plate 2, and the concave serration fits the cable 9. The bottom of the fixing column 3 is connected to the conductive plate 2, and a through hole is horizontally provided on the upper part of the fixing column 3. An external terminal 10 is provided at the other end of the conductive plate 2, and the external terminal 10 can be connected to other cables. One end of the wiring terminal 7 is embedded in the corresponding cable 9, and the other end is fitted and fixed on the conductive plate 2.

[0024] In one embodiment, the fixing column pin 6 is embedded in the through hole and inserted into the fastening bolt 4. When the fastening bolt 4 is tightened on the fixing column 3, the fixing column pin 6 applies torque and pre-tightening force to the fastening bolt 4 to prevent the fastening bolt 4 from loosening and falling off. The fixing column pin 6 is inserted into the fastening bolt 4, and by applying a certain range of torque and pre-tightening force to the fastening bolt 4, the fastening bolt 4 can be prevented from loosening and falling off.

[0025] In one embodiment, the clamping plate 5 is spiral-shaped, and when the fixing pin 6 is pushed away, it drives the conductive plate 2 and the terminal 7 to separate from each other through rebound. The clamping plate 5 connects and tightens the conductive plate 2 and the terminal 7 in the housing 1, thereby ensuring the connection strength and rigidity of the conductive plate 2 and the terminal 7. The fastening bolt 4 and the clamping plate 5 fit up and down in a base circular sleeve. The fixing pin 6 is inserted into the fastening bolt 4 to prevent the fastening bolt 4 from loosening and falling off. Every two bolts connect and tighten each conductive plate 2 and the terminal 7 point-to-point. There are a total of four terminals 7, forming a multi-body fastener device. A certain range of torque values ​​is applied to the fastening bolt 4 to push the clamping plate 5 downward, so that the conductive plate 2 and the terminal 7 are fastened to each other. When the conductive plate 2 and the terminal 7 need to be separated, the fixing pin 6 needs to be pulled out first, and then the fastening bolt 4 is contacted with the reverse torque to contact the limit of the clamping plate 5 so that it returns to elastic deformation upward, thereby achieving the separation of the conductive plate 2 and the terminal 7 from each other.

[0026] In summary, the implementation of the embodiments of the present invention has the following beneficial effects:

[0027] The fastening and connecting device of the cable interface of the electric energy meter provided by the present invention can simultaneously connect multiple cable interfaces through a multi-body structural design. The fastening bolt is combined with the clamping plate to ensure the reliable connection of each terminal and the conductive plate, thereby improving the stability and reliability of the multi-cable connection. By applying torque to the fastening bolt, the fastening and loosening operations of the conductive plate and the terminal can be realized, simplifying the installation and disassembly process of the cable interface. The conductive plate and the terminal are tightly fitted by the clamping plate, and the force distribution design of the bolt is combined to provide a large fastening bearing capacity. The cable interface can maintain a stable connection even under high current load, reducing the risk of loosening and poor electrical contact. The upper and lower fitting structures of the fastening bolt and the clamping plate, as well as the tight connection design of the cold-pressed terminal and the cable line, help to improve the waterproof and dustproof performance of the overall device, and are suitable for electric energy meter applications outdoors or in harsh environments, extending the service life of the equipment and improving the environmental adaptability of the equipment. The entire device improves the fastening strength of the cable interface through an optimized mechanical structure design to ensure the stability of the contact point during long-term use. In particular, the multi-point connection method between the conductive plate and the terminal block improves the reliability of the interface and reduces electrical failures caused by looseness or poor contact. Each component can be disassembled and assembled independently. This modular design facilitates subsequent maintenance, repair or replacement, reduces equipment downtime, and improves maintenance efficiency.

[0028] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A fastening connection device for an electric energy meter cable interface, characterized in that: include: A plurality of conductive plates are arranged in the housing of the electric energy meter, a fixing column is arranged at the upper end of the conductive plate, a fastening bolt is sleeved on the top end of the fixing column, the fastening bolt fixes a pressing sheet on the fixing column, and a fixing column pin is embedded in the upper part of the fixing column; A wiring terminal is arranged at the lower side of the conductive plate, the conductive plate and the wiring terminal are locked by the fastening bolts, and the wiring terminal is connected to the corresponding cable through a cold-pressed terminal arranged thereon.

2. The fastening connection device according to claim 1, characterized in that: A plurality of side-by-side grooves are arranged in one side of the shell, a plurality of side-by-side conductive plates are embedded in the grooves, and one end of the conductive plate passes through the shell.

3. The fastening connection device according to claim 2, characterized in that: A fixing column is arranged on the upper surface of the conductive plate, and a concave sawtooth is arranged on the bottom of the conductive plate, and the concave sawtooth is fitted to the cable.

4. The fastening connection device according to claim 2, characterized in that: The bottom of the fixing column is connected to the conductive plate, and a through hole is horizontally arranged on the upper part of the fixing column.

5. The fastening connection device according to claim 4, characterized in that: The fixing column pin is embedded in the through hole and inserted into the fastening bolt. When the fastening bolt is tightened on the fixing column, the fixing column pin applies torque and pre-tightening force to the fastening bolt to prevent the fastening bolt from loosening and falling off.

6. The fastening connection device according to claim 5, characterized in that: One end of the wiring terminal is embedded in the corresponding cable line, and the other end is fixed on the conductive plate.

7. The fastening connection device according to claim 6, characterized in that: The clamping piece is spiral-shaped, and when the fixing pin is pushed away, it drives the conductive plate and the connecting terminal to separate from each other through rebound.

8. The fastening connection device according to claim 7, characterized in that: An external terminal is arranged at the other end of the conductive plate, and the external terminal can be connected to other cables.

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