A straight-through copper-aluminum terminal with long service life

Abstract

The utility model discloses a straight-through copper-aluminum terminal with a long service life, comprising an aluminum conductor and a copper conductor connected to one end of the aluminum conductor, a groove is provided at the connection between the aluminum conductor and the copper conductor, a sealing ring is installed on the outer side of the groove, and a connecting hole is provided at one end of the aluminum conductor away from the copper conductor. The utility model can shield and seal the connection between the aluminum conductor and the copper conductor through the provided sealing ring, so as to avoid the connection contacting with moisture to form a primary battery, which causes the connection to be corroded faster, thereby extending the service life.

Description

Technical Field

[0001] The utility model relates to the technical field of wiring terminals, in particular to a straight-through copper-aluminum terminal with a long service life. Background Art

[0002] Copper-aluminum terminal is a type of terminal. It is made of copper and aluminum. The two are combined together through professional technology to form a whole. This terminal is mainly used for the transition connection between aluminum core cables and copper ends of electrical equipment in power distribution equipment to avoid corrosion problems caused by direct contact between aluminum core cables and copper ends of electrical equipment.

[0003] The connection between the aluminum conductor and the copper conductor of the existing copper-aluminum terminal is directly exposed to the outside. When it encounters humid air or comes into contact with moisture such as rain, a galvanic cell will form at the connection, causing accelerated corrosion of the connection. After long-term use, the connection is prone to breakage and has a short service life. Utility Model Content

[0004] The utility model aims to provide a straight-through copper-aluminum terminal with a long service life, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a straight-through copper-aluminum terminal with a long service life, comprising an aluminum conductor and a copper conductor connected to one end of the aluminum conductor, a groove is provided at the connection between the aluminum conductor and the copper conductor, a sealing ring is installed on the outside of the groove, and a connecting hole is provided at one end of the aluminum conductor away from the copper conductor.

[0006] As a preferred solution of the utility model, the inner wall of the connecting hole is provided with threads.

[0007] As a preferred solution of the utility model, the sealing ring and the groove are interference fit.

[0008] As a preferred solution of the present invention, the sealing ring is made of silicone rubber.

[0009] As a preferred solution of the utility model, the axial centers of the aluminum conductor and the copper conductor are on the same center line.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model can shield and seal the connection between the aluminum conductor and the copper conductor by means of the sealing ring, thereby preventing the connection from contacting moisture to form a galvanic cell, causing accelerated corrosion of the connection, and thus extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0012] Figure 2It is a front cross-sectional view of the utility model;

[0013] Figure 3 It is a schematic diagram of the structure of the sealing ring of the utility model after being disassembled.

[0014] In the figure: 1. Aluminum conductor; 2. Copper conductor; 3. Sealing ring; 4. Connecting hole; 5. Thread; 6. Groove. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figures 1 to 3 The utility model provides a technical solution: a straight-through copper-aluminum terminal with a long service life, comprising an aluminum conductor 1 and a copper conductor 2 connected to one end of the aluminum conductor 1, a groove 6 is provided at the connection between the aluminum conductor 1 and the copper conductor 2, a sealing ring 3 is installed on the outer side of the groove 6, and the sealing ring 3 is used to shield and seal the connection between the aluminum conductor 1 and the copper conductor 2 to prevent the connection from contacting moisture to form a galvanic cell, which causes accelerated corrosion of the connection, thereby extending the service life, and a connecting hole 4 is provided at one end of the aluminum conductor 1 away from the copper conductor 2, and the connecting hole 4 is convenient for connecting the aluminum conductor 1 with a cable.

[0017] The inner wall of the connection hole 4 is provided with a thread 5. When the aluminum conductor 1 is crimped onto the outside of the cable, the thread 5 can increase the friction between the aluminum conductor 1 and the cable, thereby making the connection between the aluminum conductor 1 and the cable more secure.

[0018] The sealing ring 3 and the groove 6 are interference fit, and the interference fit enables the sealing ring 3 to fit more closely to the outer side of the groove 6 , thereby improving the sealing effect of the sealing ring 3 .

[0019] Among them, the material of the sealing ring 3 is silicone rubber, which has excellent sealing and waterproof properties, can effectively resist the penetration of moisture, and prevent moisture from contacting the connection between the aluminum conductor 1 and the copper conductor 2. It also has good high temperature resistance and corrosion resistance, a long service life, and excellent electrical insulation performance. It can maintain stable insulation performance under high voltage and is not prone to breakdown and leakage.

[0020] The axial centers of the aluminum conductor 1 and the copper conductor 2 are located on the same center line.

[0021] Specifically, when connecting the cable, insert the cable into the connecting hole 4, use a tool to crimp the aluminum conductor 1 to the outside of the cable, and the thread 5 contacts the cable to increase the friction between the aluminum conductor 1 and the cable, thereby making the cable connection more secure. During use, when encountering a humid environment or rain, the sealing ring 3 will prevent the connection between the aluminum conductor 1 and the copper conductor 2 from contacting moisture, avoiding the formation of a primary battery, which will cause the connection between the aluminum conductor 1 and the copper conductor 2 to be corroded faster, thereby extending the service life.

[0022] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0024] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A straight copper-aluminum terminal with a long service life, comprising an aluminum conductor (1) and a copper conductor (2) arranged at one end of the aluminum conductor (1), characterized in that: A groove (6) is provided at the connection between the aluminum conductor (1) and the copper conductor (2), a sealing ring (3) is installed on the outside of the groove (6), and a connection hole (4) is provided at one end of the aluminum conductor (1) away from the copper conductor (2).

2. The straight copper-aluminum terminal with long service life according to claim 1 is characterized in that: The inner side wall of the connecting hole (4) is provided with a thread (5).

3. The straight copper-aluminum terminal with long service life according to claim 1, characterized in that: The sealing ring (3) and the groove (6) are interference fit.

4. The straight copper-aluminum terminal with long service life according to claim 1, characterized in that: The sealing ring (3) is made of silicone rubber.

5. The straight copper-aluminum terminal with long service life according to claim 1, characterized in that: The axial centers of the aluminum conductor (1) and the copper conductor (2) are located on the same center line.

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