Copper-aluminum transition wiring terminal

Abstract

The utility model discloses a copper-aluminum transition wiring terminal, which comprises a copper or copper alloy first metal connecting block and an aluminum or aluminum alloy second metal connecting block which are symmetrically arranged and are connected through a connecting column, a wiring plane is arranged on the same side of the first metal connecting block and the second metal connecting block and is provided with a screw hole and a plurality of wiring grooves; and the clamping assembly comprises a bolt in threaded connection with the screw hole and a wire pressing gasket with a wire pressing convex strip. According to the terminal, a transition structure is formed by using different metal characteristics, electrochemical corrosion caused by direct connection of copper and aluminum is avoided, and the connection column ensures stable connection; the wiring plane, the screw hole, the wire groove and the clamping assembly cooperate, the contact area of the wire and the terminal is increased, the contact resistance is reduced, the electrical connection performance and the power transmission reliability are improved, and the connector has the advantages of simple structure, controllable cost, reliable connection and the like.

Description

Technical Field

[0001] This utility model relates to the field of terminal block technology, specifically to a copper-aluminum transition terminal block. Background Technology

[0002] In the fields of power transmission and electrical equipment connection, copper and aluminum are widely used due to their excellent electrical conductivity. Copper has high conductivity, corrosion resistance, and mechanical strength, while aluminum plays an important role in power systems due to its light weight and low cost. However, due to the differences in the physicochemical properties of copper and aluminum, directly connecting copper and aluminum will cause many problems.

[0003] In practical applications, when copper and aluminum are directly connected, a galvanic cell will form between them in a humid environment, leading to electrochemical corrosion. This results in increased contact resistance, overheating at the connection point, and in severe cases, even fires and other safety accidents. Furthermore, traditional copper-aluminum connection methods, such as simple mechanical crimping, have limited contact area, making it difficult to guarantee good electrical connection performance. Moreover, the stability of the connection gradually decreases over time and with environmental changes, affecting the reliability and safety of power transmission.

[0004] To address the aforementioned issues, while some copper-aluminum transition connectors exist in existing technologies, most are complex in structure, costly to manufacture, inconvenient to install and operate, and their effectiveness in securing conductors during actual use is unsatisfactory, prone to loosening. These limitations fail to meet the growing demands for stable and efficient operation of power systems. Therefore, developing a copper-aluminum transition terminal block that is simple in structure, reliable in connection, cost-effective, and capable of effectively securing conductors is of significant practical importance. Utility Model Content

[0005] To address the shortcomings of the prior art, this utility model provides a copper-aluminum transition terminal.

[0006] The technical solution adopted in this utility model is: a copper-aluminum transition terminal block, comprising:

[0007] A first metal connecting block and a second metal connecting block are symmetrically arranged. The first metal connecting block is made of copper or copper alloy, and the second metal connecting block is made of aluminum or aluminum alloy. A connecting post is provided at one end of the first metal connecting block and the second metal connecting block to connect the two metal connecting blocks into one piece. A wiring plane is provided on the same side of the first metal connecting block and the second metal connecting block. A through screw hole is provided on the wiring plane, and multiple wire grooves are provided at intervals on the outside of the screw hole.

[0008] The clamping assembly includes a bolt threadedly connected to the aforementioned screw hole and a wire pressing washer fitted on the bolt's shank. The lower surface of the wire pressing washer is provided with a wire pressing protrusion corresponding to the aforementioned wire groove.

[0009] Furthermore, the wire groove has a semi-circular structure.

[0010] Furthermore, the pressure strip includes a limiting part and a pressure part, the bottom surfaces of both ends of the limiting part abut against the wiring plane, and the pressure part is provided with an arc-shaped pressure groove in the middle.

[0011] Furthermore, the upper and lower surfaces of the connecting column are machined to form mounting surfaces, and mounting screw holes are symmetrically arranged on both sides of the mounting surfaces.

[0012] Furthermore, the wire groove consists of three sections arranged in a "T" shape around the outer ring of the screw hole.

[0013] The beneficial effects of this utility model are:

[0014] 1. Improved Connection Reliability: The first metal connecting block, made of copper or copper alloy, is connected to a second metal connecting block, made of aluminum or aluminum alloy, via connecting posts. This fundamentally avoids the electrochemical corrosion problems caused by direct contact between copper and aluminum, effectively preventing safety hazards such as increased contact resistance and overheating at the connection point due to corrosion, thus greatly improving the durability and reliability of the connection. Simultaneously, the structural design of the connecting posts ensures a stable connection between the two metals, guaranteeing the stability of the electrical path during power transmission.

[0015] 2. Improved wire connection stability: The coordinated operation of the wiring plane, screw holes, wire grooves, and clamping components achieves precise positioning and secure fixing of the wires. The wire groove guides the accurate placement of the wire, and the pressure protrusions of the pressure pads correspond to the wire grooves. The pressure generated by tightening the bolts ensures full contact between the wire and the terminal, significantly increasing the contact area, effectively reducing contact resistance, thereby improving electrical connection performance, reducing power transmission losses, and enhancing power transmission efficiency.

[0016] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0017] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the pressure pad structure.

[0020] Figure 1-2In the middle: 1. First metal connecting block; 2. Second metal connecting block; 3. Connecting post; 4. Wiring plane; 5. Screw hole; 6. Wire groove; 7. Bolt; 8. Wire pressing washer; 9. Wire pressing protrusion; 10. Limiting part; 11. Wire pressing part; 12. Wire pressing groove; 13. Mounting surface; 14. Mounting screw hole. Detailed Implementation

[0021] 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.

[0022] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0023] This utility model provides a copper-aluminum transition terminal.

[0024] In this embodiment, refer to Figure 1-2 The copper-aluminum transition terminal includes:

[0025] A first metal connecting block 1 and a second metal connecting block 2 are symmetrically arranged. The first metal connecting block is made of copper or copper alloy, and the second metal connecting block is made of aluminum or aluminum alloy. A connecting post 3 is provided at one end of the first metal connecting block and the second metal connecting block to connect the two metal connecting blocks into one piece. A wiring plane 4 is provided on the same side of the first metal connecting block and the second metal connecting block. A through screw hole 5 is provided on the wiring plane 4. Multiple wire grooves 6 are provided at intervals on the outside of the screw hole 5.

[0026] The clamping assembly includes a bolt 7 threadedly connected to the aforementioned screw hole and a wire pressing washer 8 fitted on the screw of the bolt 7. The lower surface of the wire pressing washer 8 is provided with a wire pressing protrusion 9 corresponding to the aforementioned wire groove.

[0027] In the above technical solution, the first and second metal connecting blocks are securely connected by connecting posts to form a copper-aluminum transition structure. The wiring plane and screw holes provide an installation base for wire connections, while the wire groove guides and initially fixes the wires. The bolts in the clamping assembly mate with the screw holes; when the bolts are tightened, the pressure washer fitted on the screw rod, through the pressure protrusion corresponding to the wire groove, tightly presses the wire onto the wiring plane, achieving a reliable electrical connection. The wiring plane, screw holes, wire groove, and clamping assembly work together to increase the contact area between the wire and the terminal, reduce contact resistance, improve electrical connection performance, and reduce power transmission loss. Simultaneously, it facilitates wire installation, provides excellent fixation, effectively improves the reliability and safety of power transmission, and has a simple structure with controllable costs.

[0028] Specifically, the wire groove has a semi-circular structure.

[0029] In this embodiment, the semi-circular shape can better fit the outer surface of a circular or near-circular wire. When the wire is placed, its shape can naturally limit the wire, making the wire more accurately positioned in the design position. When the wire clamping pad is tightened, the wire groove of the semi-circular structure cooperates with the wire clamping protrusion to form a uniform pressure distribution around the wire, enhancing the fixing effect of the wire.

[0030] Specifically, the pressure strip includes a limiting part 10 and a pressure part 11. The bottom surfaces of both ends of the limiting part abut against the wiring plane, and the pressure part is provided with an arc-shaped pressure groove in the middle.

[0031] In this embodiment, the limiting part is used to limit the extreme position of the pressure strip. The arc-shaped pressure groove in the middle of the pressure part can better fit with the surface of the wire. When the bolt is tightened, the pressure groove applies pressure evenly to the wire through the arc surface, which can not only firmly fix the wire, but also avoid damage to the wire due to excessive local pressure.

[0032] The phrase "both ends of the bottom surface abut against the wiring plane" here specifically refers to the wiring plane.

[0033] Specifically, the upper and lower surfaces of the connecting column are machined to form mounting surfaces 12, and mounting screw holes 13 are symmetrically arranged on both sides of the mounting surfaces 12.

[0034] In this embodiment, mounting surfaces are formed by cutting the upper and lower surfaces of the connecting post, and mounting screw holes are symmetrically arranged on both sides of the mounting surfaces, providing more diverse installation methods. The mounting surfaces increase the contact area between the connecting post and other components, making the installation more stable; the mounting screw holes can be connected to other equipment or components through bolts, facilitating the installation of copper-aluminum transition terminals into different electrical systems or equipment, and enabling flexible assembly and layout.

[0035] Specifically, there are three wire grooves arranged in a "T" shape around the outer ring of the screw hole.

[0036] In this embodiment, three wire slots arranged in a "T" shape around the outer ring of the screw hole are designed to accommodate connections of wires of different specifications and quantities. The three wire slots can connect multiple wires simultaneously and can separate different types of wires, meeting the needs of complex electrical connections.

[0037] Please note to all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A copper-aluminum transition terminal, characterized in that... include: A first metal connecting block and a second metal connecting block are symmetrically arranged. The first metal connecting block is made of copper or copper alloy, and the second metal connecting block is made of aluminum or aluminum alloy. A connecting post is provided at one end of the first metal connecting block and the second metal connecting block to connect the two metal connecting blocks into one piece. A wiring plane is provided on the same side of the first metal connecting block and the second metal connecting block. A through screw hole is provided on the wiring plane, and multiple wire grooves are provided at intervals on the outside of the screw hole. The clamping assembly includes a bolt threadedly connected to the aforementioned screw hole and a wire pressing washer fitted on the bolt's shank. The lower surface of the wire pressing washer is provided with a wire pressing protrusion corresponding to the aforementioned wire groove.

2. The copper-aluminum transition terminal according to claim 1, characterized in that: The wire groove has a semi-circular structure.

3. The copper-aluminum transition terminal according to claim 1, characterized in that: The pressure bar includes a limiting part and a pressure part. The bottom surfaces of both ends of the limiting part abut against the wiring plane, and the pressure part has an arc-shaped pressure groove in the middle.

4. The copper-aluminum transition terminal according to claim 1, characterized in that: The upper and lower surfaces of the connecting column are machined to form mounting surfaces, and mounting screw holes are symmetrically arranged on both sides of the mounting surfaces.

5. The copper-aluminum transition terminal according to claim 1, characterized in that: The wire groove consists of three grooves arranged in a "T" shape around the outer ring of the screw hole.

Images