Large-current wiring terminal

Abstract

The utility model discloses a large-current wiring terminal, which comprises a first wiring terminal with a hollow cylinder structure and a second wiring terminal with a flat plate structure, the first wiring terminal and the second wiring terminal are connected through a transition section, and the second wiring terminal is provided with a wiring hole. The wiring terminal is characterized in that at least two slots are arranged at intervals on the wiring terminal I, a plurality of protruding contact strips are arranged on the inner wall of the through hole, and at least one circle of bundling groove is arranged on the outer wall. According to the wiring terminal, the through hole is endowed with the elastic clamping capability through the slotting, the contact strip optimizes the electrical connection performance and reduces the processing precision requirement, and the binding groove can tighten the through hole to adapt to wires with different diameters, so that the problems of poor contact and poor adaptability of the existing wiring terminal are effectively solved, the cost is reduced, and the flexibility and stability of power system connection are improved.

Description

Technical Field

[0001] This utility model relates to the field of terminal block technology, and specifically to a high-current terminal block. Background Technology

[0002] In the field of power transmission, high-voltage, high-current terminals, as key metal components connecting large power equipment, play a crucial role in conducting current. One end is typically designed as a hollow cylindrical section. To ensure good electrical contact when plugged into cylindrical conductors, extremely high precision is required in the machining of the inner wall of the hollow cylindrical section's through-hole (e.g., a comb-tooth type high-voltage, high-current terminal disclosed in application number CN201710897834.0). Any deviation in machining dimensions can easily lead to poor contact between the conductor and the inner wall of the through-hole, severely affecting the stability and safety of power transmission, while also increasing the difficulty and cost of production.

[0003] Furthermore, the through-hole dimensions of existing high-voltage, high-current terminals are relatively fixed, with each size only suitable for a single wire diameter. In practical applications, due to the diverse specifications of power equipment and the varying diameters of the required wires, these single-fit terminals cannot meet diverse usage needs, limiting their application range and reducing flexibility and convenience. Therefore, there is an urgent need for a high-voltage, high-current terminal that can reduce processing precision requirements and improve adaptability. Utility Model Content

[0004] To address the shortcomings of the prior art, this utility model provides a high-current terminal block.

[0005] The technical solution adopted by this utility model is: a high-current terminal block, including a hollow cylindrical terminal block one and a flat terminal block two, which are connected as one unit by a transition section. The terminal block two is provided with a wiring hole, and the terminal block one is provided with at least two slots at intervals. The inner wall of the through hole of the terminal block one is provided with several protruding contact strips at intervals, and the outer wall of the terminal block one is provided with at least one annular binding groove.

[0006] Furthermore, the slot extends from one end of terminal one to one end of terminal two, and the total length of the slot is no greater than 3 / 4 of the total length of terminal one.

[0007] Furthermore, the slot is a "V" shaped structure.

[0008] Furthermore, the length of the contact strip is 1 / 4 to 2 / 3 of the total length of the terminal block.

[0009] Furthermore, the binding groove is three in number, and is equally spaced along the length of the terminal block on the outer wall of the terminal block.

[0010] Furthermore, the surface of the contact strip is provided with a silver-graphite wear-resistant coating, wherein the graphite accounts for 1% to 8% of the mass.

[0011] Furthermore, the second terminal is a flat rectangular structure with an aluminum layer on its surface through hot-melt welding, the aluminum layer having a thickness of 0.5-2mm.

[0012] The beneficial effects of this utility model are:

[0013] First, the two slots spaced apart on the terminal block give the through-hole of the hollow cylindrical section a certain degree of elastic clamping ability. When the wire is inserted into the through-hole, the slots allow the through-hole to adaptively adjust its shape and fit the wire tightly. Even if there is a certain deviation in the wire size, good electrical contact can be guaranteed, effectively avoiding current conduction problems caused by poor contact.

[0014] Secondly, the several protruding contact strips spaced apart on the inner wall of the through hole further optimize the electrical connection performance. The contact strip area directly contacts the outer wall of the wire, changing the traditional surface contact method and concentrating the contact focus on the contact strip. This not only reduces the requirements for the overall machining accuracy of the inner wall of the through hole, reducing machining steps and costs, but also avoids the impact of unevenness on the contact effect due to unevenness of the inner wall of the through hole to a certain extent, ensuring the stability of current conduction.

[0015] Furthermore, the presence of at least one binding groove on the outer wall of the terminal block significantly enhances its adaptability. By using a binding wire to tighten the through-hole through the binding groove, the terminal block can accommodate wires of different diameters, especially smaller diameter wires. This overcomes the limitation of traditional terminal blocks being only compatible with a single type, broadens its application range, reduces the cost and complexity associated with replacing different specifications of terminal blocks during power equipment connection, and improves the flexibility and convenience of power system connections.

[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 front view of the present invention.

[0020] Figure 3 This is a schematic diagram of the end face of this utility model.

[0021] Figure 1-3In the middle: 1. Terminal 1 2. Terminal 2 3. Transition section 4. Wiring hole 5. Slot 6. Through hole 7. Contact strip 8. Slot 9. Silver-graphite wear-resistant coating 10. Aluminum layer. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] This utility model provides a high-current terminal block.

[0025] In this embodiment, refer to Figure 1-3 The high-current terminal includes a hollow cylindrical terminal and a flat terminal. The terminal is connected as a whole by a transition section. The terminal has a wiring hole. The terminal has at least two slots spaced apart. The inner wall of the through hole of the terminal has several protruding contact strips spaced apart. The outer wall of the terminal has at least one annular binding groove.

[0026] In the above technical solution, a slot is provided in the terminal block to give the hollow cylindrical section elastic deformation capability; the contact strip on the inner wall of the through hole increases the contact points with the outer wall of the wire, and even if the machining precision of the inner wall of the through hole is insufficient, the contact strip can still provide stable electrical connection; the binding groove can tighten the through hole by binding wire. The three work together to optimize the connection performance between the terminal block and the wire and improve the stability of electrical contact; the binding groove enables adaptation to wires of different diameters, improving the versatility of the terminal block.

[0027] Specifically, the slot extends from one end of terminal one to one end of terminal two, and the total length of the slot is no more than 3 / 4 of the total length of terminal one.

[0028] In this embodiment, the groove is restricted to extend from terminal one to terminal two, and its length is not greater than 3 / 4 of the total length of terminal one. This ensures both the elastic deformation of terminal one and the maintenance of its structural strength and stability.

[0029] Specifically, the slot is a "V" shaped structure.

[0030] In this embodiment, the "V" shaped groove can undergo better elastic deformation under stress, and compared with other shapes, the stress distribution of the "V" shaped structure is more uniform, which helps to improve the elastic deformation capability and recovery capability of terminal one.

[0031] Specifically, the length of the contact strip is 1 / 4 to 2 / 3 of the total length of the terminal block.

[0032] In this embodiment, the contact strip length is set to 1 / 4 to 2 / 3 of the total length of the terminal block. This ensures effective contact with the wire while avoiding the wire insertion being affected by the contact strip being too long, or the contact area being insufficient due to the contact strip being too short.

[0033] Specifically, there are three binding grooves, which are equally spaced along the length of the terminal block on the outer wall of the terminal block.

[0034] In this embodiment, three binding grooves are equally spaced along the length of the terminal block. By tightening the binding wire at different positions, the inner diameter of the through hole can be adjusted more precisely to accommodate wires of different diameters.

[0035] Specifically, the surface of the contact strip is provided with a silver-graphite wear-resistant coating, wherein the graphite accounts for 1% to 8% of the mass.

[0036] In this embodiment, the silver-graphite wear-resistant coating on the surface of the contact strip utilizes the good conductivity of silver and the lubricating and wear-resistant properties of graphite to reduce friction and wear between the contact strip and the wire while ensuring electrical contact performance.

[0037] Specifically, the second terminal is a flat rectangular structure with an aluminum layer on its surface through hot-melt welding. The thickness of the aluminum layer is 0.5-2mm.

[0038] In this embodiment, the aluminum layer of terminal two is hot-melt welded. Aluminum has good conductivity and oxidation resistance, realizing the copper-aluminum transition (the terminal is made of copper), and the cost is relatively low. Through hot-melt welding, it can be firmly combined with terminal two, enhancing the performance of terminal two.

[0039] 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 high-current terminal block, comprising a hollow cylindrical terminal block one and a flat terminal block two, wherein the terminal block one and the terminal block two are connected as a single unit via a transition section, and the terminal block two is provided with a wiring hole, characterized in that: The terminal block has at least two slots spaced apart, the inner wall of the through hole of the terminal block has several protruding contact strips spaced apart, and the outer wall of the terminal block has at least one annular binding groove.

2. The high-current terminal block according to claim 1, characterized in that: The slot extends from one end of terminal one to one end of terminal two, and the total length of the slot is no more than 3 / 4 of the total length of terminal one.

3. The high-current terminal block according to claim 1, characterized in that: The slot is a "V" shaped structure.

4. The high-current terminal block according to claim 1, characterized in that: The length of the contact bar is 1 / 4 to 2 / 3 of the total length of the terminal block.

5. The high-current terminal block according to claim 1, characterized in that: The binding groove is three in number and is evenly spaced along the length of the terminal block on the outer wall of the terminal block.

6. The high-current terminal block according to claim 1, characterized in that: The surface of the contact strip is provided with a silver-graphite wear-resistant coating, wherein the graphite accounts for 1% to 8% of the mass.

7. The high-current terminal block according to claim 1, characterized in that: The second terminal is a flat rectangular structure with an aluminum layer on its surface, which is 0.5-2mm thick and welded together by hot melting.

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