CN209948121U

CN209948121U - High-strength corrosion-resistant connecting terminal

Info

Publication number: CN209948121U
Application number: CN201920803747.9U
Authority: CN
Inventors: 佘玲香
Original assignee: Guangzhou Ju Xiang Electronics Co Ltd
Current assignee: Guangzhou Ju Xiang Electronics Co Ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-01-14
Anticipated expiration: 2029-05-30

Abstract

The utility model provides a corrosion-resistant connecting terminal of high strength, including main part and conducting segment, main part parcel conducting segment, conducting segment be used for with the sinle silk electric connection of wire, the main part is made by iron or ferroalloy, the main part from interior to exterior has set gradually tin coating and zinc or zinc alloy coating on the surface, the conducting segment is made by aluminium or aluminum alloy, the conducting segment owner is provided with tin coating on the surface. Compared with a conventional connecting terminal, the corrosion-resistant connecting terminal has the advantages that the potential difference between the aluminum wire cores becomes smaller, the moisture content in the environment is high, the electrochemical corrosion is difficult to realize, the progress of the electrochemical corrosion can be inhibited through timely water permeation, and the problem that the conductivity is increasingly poor after the electrochemical corrosion occurs is solved.

Description

High-strength corrosion-resistant connecting terminal

Technical Field

The utility model relates to a binding post technical field especially relates to a corrosion-resistant connecting terminal of high strength.

Background

The connection between the wires requires the use of a connection terminal, copper has excellent strength, is easily folded, and has high conductivity, and a terminal made of copper or a copper alloy is generally provided with a tin plating layer on the surface thereof, generally as a material of the connection terminal.

However, in recent years, in automobiles using aluminum wires as conductive wires, moisture containing salt intrudes into a tin-plated layer and a base material layer made of copper or a copper alloy in a vehicle use environment exposed to high temperature and high humidity, particularly in a coastal area, and tin may be dissolved due to a potential difference between tin and copper. When tin is dissolved and the base material layer made of copper or copper alloy is exposed, the wire core of the wire is in contact with the base material layer, and due to the potential difference between the aluminum wire core and the copper, the aluminum further promotes the dissolution of the tin, and the galvanic corrosion of the aluminum and the copper rapidly progresses.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a corrosion-resistant connecting terminal of high strength just in order to solve above-mentioned problem.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a corrosion-resistant connecting terminal of high strength, includes main part and conducting part, the main part parcel conducting part, conducting part is used for with the sinle silk electric connection of wire, the main part is made by iron or ferroalloy, has set gradually tin coating and zinc or zinc alloy coating from inside to outside on the surface of main part, the conducting part is made by aluminium or aluminum alloy, is provided with the tin coating on the main surface of conducting part.

Further, the iron alloy is ferritic stainless steel.

Further, the zinc alloy is a zinc-nickel alloy.

Further, the front end of main part is provided with first stiff end, and the rear end is provided with the second stiff end, the conductive part is the sheetmetal, and conductive part wears to establish between first stiff end and the second stiff end.

Further, the main body part is provided with a third fixed end at the front end of the first fixed end.

Further, a fourth fixed end is arranged at the front end of the conductive part.

The utility model has the advantages that:

through adopting above-mentioned technical scheme, this corrosion-resistant connecting terminal compares with conventional connecting terminal, and the potential difference between following the aluminium sinle silk becomes littleer, and aqueous vapor content is high also to be difficult to by the electrochemical corrosion in the environment to in time water infiltration also can restrain the progress of electrochemical corrosion, has avoided leading to the problem that electric conductive property is progressively worse after the electrochemical corrosion takes place.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a connection terminal of the present invention;

fig. 2 is a schematic diagram of the internal structure of the connection terminal of the present invention.

Reference numerals: 1. a body portion; 2. a conductive portion; 3. a first fixed end; 4. a second fixed end; 5. a third fixed end; 6. and a fourth fixed end.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

As shown in fig. 1-2, a high-strength corrosion-resistant connection terminal comprises a main body part 1 and a conductive part 2, wherein the main body part 1 wraps the conductive part 2, the conductive part 2 is used for being electrically connected with a wire core of a wire, the main body part 1 is made of iron or iron alloy, a tin plating layer and a zinc or zinc alloy coating layer are sequentially arranged on the surface of the main body part 1 from inside to outside, the conductive part 2 is made of aluminum or aluminum alloy, and the main surface of the conductive part 2 is provided with the tin plating layer.

The conductive portion 2 is closer to the core of the wire than the body portion 1, and the conductive portion 2 has a smaller resistance than the body portion 1. Compared with the conventional material such as copper or copper alloy, the main body part 1 made of iron or iron alloy has smaller potential difference with an aluminum wire core, is difficult to be electrochemically corroded even if the moisture content in the environment is high, has larger resistance, mainly passes through the conductive part 2 in the electrified state, and generates smaller heat value by the main body part 1. The main body part 1 is preferably made of ferritic stainless steel, so that the potential difference with the aluminum wire core becomes smaller.

A tin plating layer is provided on the surface of the main body portion 1, and a zinc or zinc alloy coating layer may be further provided below the surface of the tin plating layer. Since the corrosion potential of zinc or zinc alloy is closer to iron in the main body portion 1 than the corrosion potential of aluminum in the wire core, the zinc or zinc alloy coating layer functions as an anticorrosive layer even if water permeates, protects the main body portion 1 by sacrificing, and suppresses the progress of galvanic corrosion of the main body portion 1. The zinc alloy coating preferably is a zinc-nickel alloy with a particularly high corrosion-retarding effect. The provision of the tin plating on the surface of the main body portion 1 and the provision of the tin plating on the surface of the conductive portion 2 mainly protects the main body portion 1 and the conductive portion 2 from oxidation while maintaining conductivity.

The front end of main part 1 is provided with first stiff end 3, and the rear end is provided with second stiff end 4, conducting part 2 is the sheetmetal, and conducting part 2 wears to establish between first stiff end 3 and second stiff end 4.

Main part 1 and the components of a whole that can function independently setting of conducting part 2, during the combination, wear to establish conducting part 2 between first stiff end 3 and second stiff end 4, constitute public end terminal and female end terminal that main part 1 and conducting part 2 can be free, the difference of public end terminal and female end terminal is conducting part 2 and whether extends second stiff end 4, be female end terminal in the legend, insert the second stiff end 4 that female end terminal was held to conducting part 2 of public end terminal then compress tightly the interconnect that can reach the terminal. During the wiring, arrange the sinle silk of wire in conducting part 2 and make wire and this terminal electric connection through compressing tightly first stiff end 3, the fourth stiff end 6 purpose that the front end of conducting part 2 set up is that the sinle silk is connected more firm with conducting part 2, can also compress tightly front end third stiff end 5 of first stiff end 3 and make and be connected more firm between wire and the terminal.

The above embodiments of the present invention are not right the utility model discloses the limited protection scope, the utility model discloses an embodiment is not limited to this, all kinds of basis according to the above-mentioned of the utility model discloses an under the above-mentioned basic technical thought prerequisite of the utility model, right according to ordinary technical knowledge and the conventional means in this field the modification, replacement or the change of other multiple forms that above-mentioned structure made all should fall within the protection scope of the utility model.

Claims

1. A high strength corrosion-resistant connecting terminal which characterized in that: including main part (1) and conducting part (2), main part (1) parcel conducting part (2), conducting part (2) are used for with the sinle silk electric connection of wire, main part (1) is made by iron or ferroalloy, has set gradually tin coating and zinc or zinc alloy coating from inside to outside on the surface of main part (1), conducting part (2) are made by aluminium or aluminum alloy, are provided with the tin coating on the main surface of conducting part (2).

2. A high-strength corrosion-resistant connection terminal according to claim 1, wherein: the iron alloy is ferritic stainless steel.

3. A high-strength corrosion-resistant connection terminal according to claim 1, wherein: the zinc alloy is a zinc-nickel alloy.

4. A high-strength corrosion-resistant connection terminal according to any one of claims 1 to 3, wherein: the front end of main part (1) is provided with first stiff end (3), and the rear end is provided with second stiff end (4), conducting part (2) are the sheetmetal, and conducting part (2) are worn to establish between first stiff end (3) and second stiff end (4).

5. A high-strength corrosion-resistant connection terminal according to claim 4, wherein: the front end that main part (1) is located first stiff end (3) still is provided with third stiff end (5).

6. A high-strength corrosion-resistant connection terminal according to claim 4, wherein: the front end of the conductive part (2) is provided with a fourth fixed end (6).