A low-voltage aluminum wire terminal

Abstract

This utility model discloses a low-voltage aluminum wire terminal, relating to the field of wire terminal technology. It includes a crimp terminal head and an aluminum wire. A connecting tube is installed at the rear end of the crimp terminal head, and the connecting tube is integrally formed with the crimp terminal head. A through hole is provided at the front end of the crimp terminal head. A connecting cavity is provided inside the connecting tube, and the connecting cavity corresponds to the aluminum wire. Multiple protrusions are installed inside the connecting cavity, and the protrusions are symmetrically arranged inside the connecting cavity. The protrusions are integrally formed with the connecting tube. This low-voltage aluminum wire terminal, through optimized terminal structure and crimping process, uses protrusions that push into the interior of the aluminum wire during crimping, which can destroy the oxide layer on the surface of the aluminum wire, reducing contact resistance. The integrated structural design enhances the mechanical properties of the terminal, making it more suitable for low-voltage electrical systems.

Description

Technical Field

[0001] This utility model relates to the field of wire terminal technology, specifically a low-voltage aluminum wire terminal. Background Technology

[0002] Wire terminals are key components in electrical connections, used to achieve reliable connections between wires and equipment, and between wires themselves. Through the combination of metal sheets and insulating plastic, wires can be quickly connected and disconnected without welding, simplifying circuit system maintenance. Low-voltage aluminum wire terminals are special components used to connect low-voltage aluminum wires. Through crimping, welding, or friction welding, aluminum wires are reliably connected to equipment terminal blocks, switch cabinets, or distribution boxes, ensuring stable current transmission.

[0003] Chinese Patent Publication No. CN202930576U, authorized on May 8, 2013, discloses a copper-aluminum wire crimp terminal, comprising a copper crimp terminal / aluminum crimp terminal. A copper tube / aluminum tube is integrally formed at one end of the copper / aluminum crimp terminal, and an aluminum liner / copper liner is coaxially and interference-fitted into the inner cavity of the copper / aluminum tube. The inner diameter of the liner matches the diameter of the wire being crimped, and its specific length matches the crimping modulus and spacing specified for different wires. This utility model is used in power lines and electrical equipment where copper-aluminum wire transition connections are required, effectively preventing the original copper-aluminum wire crimp terminal from overheating and burning out due to insufficient copper-aluminum contact surface.

[0004] When existing terminals are connected to aluminum wires, the oxide layer on the surface of the aluminum wires is not treated, causing the oxide layer to come into contact with the terminals. This increases the contact resistance between the terminals and the aluminum wires, making them prone to burning and reducing the service life of the terminals. This makes them unsuitable for low-voltage electrical systems and fails to meet usage requirements. Utility Model Content

[0005] The purpose of this utility model is to provide a low-voltage aluminum wire terminal to solve the problem mentioned in the background art that when existing terminals are connected to aluminum wires, the oxide layer on the surface of the aluminum wire is not treated, causing the oxide layer to come into contact with the terminal, which increases the contact resistance between the terminal and the aluminum wire, easily leading to ablation, reducing the service life of the terminal, making it unsuitable for low-voltage electrical systems, and failing to meet the usage requirements.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-voltage aluminum wire terminal, comprising a crimp terminal head and an aluminum wire, wherein a connecting tube is installed at the rear end of the crimp terminal head and the connecting tube is integrally formed with the crimp terminal head, a through hole is provided at the front end of the crimp terminal head, a connecting cavity is provided inside the connecting tube and the connecting cavity is correspondingly arranged with the aluminum wire, a plurality of protrusions are installed inside the connecting cavity and the protrusions are symmetrically arranged inside the connecting cavity, and the protrusions are integrally formed with the connecting tube.

[0007] Preferably, an elastic anti-bend ring is installed on the outside of the connection between the aluminum wire and the connecting pipe, and the elastic anti-bend ring is slidably connected to both the connecting pipe and the aluminum wire. The elastic anti-bend ring is shaped like a frustum.

[0008] Preferably, the outer surface of the elastic anti-folding ring is provided with a plurality of grooves, and the grooves are equidistantly and intersectingly arranged on the outer surface of the elastic anti-folding ring.

[0009] Preferably, the front end of the elastic anti-folding ring is provided with a connecting groove, and the connecting groove is square. The connecting groove is corresponding to the rear end of the crimping terminal head, and the crimping terminal head is engaged with the elastic anti-folding ring.

[0010] Preferably, a sealing ring is installed at the contact point between the aluminum wire and the elastic anti-folding ring, and the sealing ring is located inside the rear end of the elastic anti-folding ring, while the sealing ring is fitted to the outside of the aluminum wire.

[0011] Preferably, the side wall of the crimp terminal head is provided with an opening groove, there are two opening grooves, and the two opening grooves are located on both sides of the crimp terminal head, and the cross-section of the opening groove is arc-shaped.

[0012] Preferably, the outer surfaces of the crimp terminal head and the connecting tube are provided with an anti-corrosion coating.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model device, through the setting of crimping terminal head, connecting tube and protrusion block, the crimping terminal head and connecting tube are integrally formed, the integrated structure design enhances the mechanical performance of the terminal, making it more suitable for low voltage electrical systems, the protrusion block is pushed into the interior of aluminum wire under strong pressure, removes the oxide layer on the outer surface of aluminum wire, reduces contact resistance and improves connection reliability;

[0015] 2. This utility model device, through the setting of elastic anti-bending ring and groove, the elastic anti-bending ring wraps around the connection part, which can prevent the connection part from being exposed and prevent moisture and air from entering the joint surface and causing oxidation. When the connection part is subjected to external force, the groove on the elastic anti-bending ring can play a buffering role and increase the bending radius of the connection part, which can significantly improve the fatigue limit of the aluminum wire connection part, ensure that the aluminum wire does not break or break under bending, twisting or heavy pressure, and improve the connection effect.

[0016] 3. This utility model device increases the corrosion resistance of the terminals by setting an anti-corrosion coating on the outer surface of the terminals, which can effectively reduce electrochemical corrosion, adapt to complex environments, and improve the service life of the terminals. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a diagram showing the connection relationship between the terminal and the aluminum wire of this utility model;

[0019] Figure 3 For the present utility model Figure 2 A magnified view of a portion of area A;

[0020] Figure 4 This is a perspective view of the elastic anti-folding ring component of this utility model.

[0021] In the diagram: 1. Crimped terminal head; 2. Connecting tube; 3. Through hole; 4. Opening groove; 5. Connecting cavity; 6. Aluminum wire; 7. Elastic anti-folding ring; 8. Sealing ring; 9. Protrusion; 10. Groove; 11. Connecting groove. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 This utility model provides an embodiment of a low-voltage aluminum wire terminal, comprising a crimping terminal head 1 and an aluminum wire 6. A connecting tube 2 is installed at the rear end of the crimping terminal head 1, and the connecting tube 2 is integrally formed with the crimping terminal head 1. A through hole 3 is provided at the front end of the crimping terminal head 1. A connecting cavity 5 is provided inside the connecting tube 2, and the connecting cavity 5 is correspondingly arranged with the aluminum wire 6. Multiple protrusions 9 are installed inside the connecting cavity 5, and the protrusions 9 are symmetrically arranged inside the connecting cavity 5. The protrusions 9 are integrally formed with the connecting tube 2. One end of the aluminum wire 6 is stripped and inserted into the connecting cavity 5. The connecting tube 2 is squeezed using a crimping device, causing the connecting tube 2 to deform and come into close contact with the aluminum wire 6. Under strong pressure, the protrusions 9 are pushed into the interior of the aluminum wire 6, removing the oxide layer on the outer surface of the aluminum wire 6, reducing the contact resistance, and improving the connection reliability.

[0024] Please see Figure 1 , Figure 2 and Figure 4An elastic anti-bend ring 7 is installed on the outside of the connection between the aluminum wire 6 and the connecting pipe 2. The elastic anti-bend ring 7 is slidably connected to both the connecting pipe 2 and the aluminum wire 6. The elastic anti-bend ring 7 is frustoconical in shape. Multiple grooves 10 are provided on the outer surface of the elastic anti-bend ring 7, and the grooves 10 are equidistantly intersecting on the outer surface of the elastic anti-bend ring 7. A connecting groove 11 is provided at the front end of the elastic anti-bend ring 7, and the connecting groove 11 is square in shape. The connecting groove 11 is corresponding to the rear end of the crimp terminal head 1, and the crimp terminal head 1 is snapped into the elastic anti-bend ring 7. A tight seal is installed at the contact point between the aluminum wire 6 and the elastic anti-bend ring 7. The sealing ring 8 is located inside the rear end of the elastic anti-bending ring 7. The sealing ring 8 is fitted to the outside of the aluminum wire 6. After the aluminum wire 6 is connected to the terminal, the elastic anti-bending ring 7 is used to wrap the connection part, which can prevent the connection part from being exposed and prevent moisture and air from entering the joint surface and causing oxidation. When the connection part is subjected to external force, the groove 10 on the elastic anti-bending ring 7 can play a buffering role and increase the bending radius of the connection part, which can significantly improve the fatigue limit of the aluminum wire connection part, ensure that the aluminum wire does not break or break under bending, twisting or heavy pressure, and improve the connection effect.

[0025] Please see Figure 1 The crimp terminal head 1 has two opening slots 4 on its side wall, which are located on both sides of the crimp terminal head 1. The cross-section of the opening slots 4 is arc-shaped. Both the crimp terminal head 1 and the connecting tube 2 are coated with an anti-corrosion coating. The opening slots 4, in conjunction with the protruding structure on the mounting base, can play a positioning role during terminal installation, making it easier to install the terminal. The anti-corrosion coating increases the anti-corrosion performance of the terminal, effectively reduces electrochemical corrosion, adapts to complex environments, and improves the service life of the terminal.

[0026] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-voltage aluminum conductor terminal comprising a crimp terminal head (1) and an aluminum conductor (6), characterized in that: A connecting tube (2) is installed at the rear end of the crimp terminal head (1), and the connecting tube (2) is integrally formed with the crimp terminal head (1). A through hole (3) is provided at the front end of the crimp terminal head (1). A connecting cavity (5) is provided inside the connecting tube (2), and the connecting cavity (5) is correspondingly arranged with the aluminum wire (6). Multiple protrusions (9) are installed inside the connecting cavity (5), and the protrusions (9) are symmetrically arranged inside the connecting cavity (5). The protrusions (9) are integrally formed with the connecting tube (2).

2. The low-voltage aluminum conductor terminal of claim 1, wherein: An elastic anti-bending ring (7) is installed on the outside of the connection between the aluminum wire (6) and the connecting pipe (2), and the elastic anti-bending ring (7) is slidably connected to both the connecting pipe (2) and the aluminum wire (6). The elastic anti-bending ring (7) is arranged in a frustum shape.

3. A low voltage aluminum conductor terminal according to claim 2, characterized in that: The outer surface of the elastic anti-folding ring (7) is provided with a plurality of grooves (10), and the grooves (10) are equidistantly intersecting on the outer surface of the elastic anti-folding ring (7).

4. The low-voltage aluminum conductor terminal of claim 3, wherein: The front end of the elastic anti-folding ring (7) is provided with a connecting groove (11), and the connecting groove (11) is square. The connecting groove (11) is corresponding to the rear end of the crimping terminal head (1), and the crimping terminal head (1) is engaged with the elastic anti-folding ring (7).

5. The low-voltage aluminum conductor terminal of claim 1, wherein: A sealing ring (8) is installed at the contact point between the aluminum wire (6) and the elastic anti-folding ring (7), and the sealing ring (8) is located inside the rear end of the elastic anti-folding ring (7), while the sealing ring (8) is fitted to the outside of the aluminum wire (6).

6. A low-voltage aluminum wire terminal according to claim 1, characterized in that: The crimp terminal head (1) has an opening groove (4) on its side wall. There are two opening grooves (4), and the two opening grooves (4) are located on both sides of the crimp terminal head (1). The cross-section of the opening groove (4) is arc-shaped.

7. A low-voltage aluminum wire terminal according to claim 1, characterized in that: The outer surfaces of the crimp terminal (1) and the connecting pipe (2) are both provided with anti-corrosion coatings.

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