CN2079813U

CN2079813U - Oil blocking type cu-al connecting terminal by alloy welding method

Info

Publication number: CN2079813U
Application number: CN 90223883
Authority: CN
Inventors: 祁水清; 李惠勤; 曾祥华
Original assignee: WUHAR CABLE ACCESSORIES FACTORY WUHAN HUBEI
Current assignee: WUHAR CABLE ACCESSORIES FACTORY WUHAN HUBEI
Priority date: 1990-11-16
Filing date: 1990-11-16
Publication date: 1991-06-26

Abstract

The utility model discloses an oil blocking type Cu-Al connecting terminal by an alloy welding method. One end is cylindrical and one end is tabular. The cylindrical end is provided with a round hole used for making a cable line with an aluminium core be inserted. The tabular end is provided with a fixing hole. The upper parts of the cylindrical end and the tabular end are made of aluminum. The lower part of the tabular end is made of copper. The copper and the aluminum are welded together by alloy with low resistance and high ability for resisting corrosion. The connecting terminal of the utility model is used for transitionally connecting a conducting wire with an aluminium core and electric equipment. Compared with an existing connecting terminal, the connecting terminal of the utility model has higher bending resistance, tensile strength and ability for resisting corrosion. The performance for resisting stripping is higher. The material utilization of the connecting terminal is high. The utilization rate for copper can reach more than 85%. The weld quality is reliable. The connecting terminal can resist high temperature with more than 200 DEG C. The connecting terminal can be accurately tested by general equipment. The performance of transmission of electricity is good.

Description

Oil blocking type Cu-Al connecting terminal by alloy welding method

The utility model belongs to circuit connecting circuit element class, a kind of specifically copper al wiring terminal from power transmission line to the power consumption equipment transmitting electric power.

At present, aluminium cable all adopts traditional diamond-making technique to form to the copper al wiring terminal that the power consumption equipment transition connects usefulness.Its shape such as Fig. 3, Fig. 4, an end are cylindric 1, one end and are flat 3.An end of cylindric 1 has the circular hole 2 that is adapted to aluminium cable wire core diameter size, and the fixing hole 4 that binding post is fixedlyed connected with power consumption equipment is arranged on the flat 3.Cylindric 1 adopts aluminium, and flat 3 adopts copper material.Aluminium, copper material take welderings such as low temperature friction welding (FW) or argon arc welding to be one.This copper al wiring terminal, solder side 5 is vertical configuration with the core direction of insertion, and to repeatedly the exerting pressure of terminal, the swing and the deadweight thereof of assembling back aluminum core line cable all will affact on the solder side when construction, and therefore tension, the bending strength of this binding post are not enough.Former complex process needs a large amount of process equipments and means in the production process, quality is wayward; Stock utilization is low, and particularly the copper material utilance is only about 40%.

The purpose of this utility model provides a kind of a small amount of use copper material, makes copper material fully obtain the copper al wiring terminal that utilizes, and its every performance all above the copper al wiring terminal of tradition processing, can satisfy the copper aluminium of national defined and cross the every requirement of unrestrained product.

The purpose of this utility model realizes that in the following manner gold alloy solder connection oil blocking type Cu-Al binding post one end is cylindric 1, one end and is flat 3.An end of cylindric 1 has the circular hole 2 that inserts the aluminium cable line, and fixing hole 4 is arranged on the flat 3, cylindric 1 and flat 3 tops adopt aluminium, copper material is adopted in flat 3 lower parts, it is one that copper material and aluminium weld with the gold alloy solder connection.

With reference to the accompanying drawings the utility model structure and function are described in detail:

Fig. 1 the utility model structural representation

The A-A profile of Fig. 2 Fig. 1

Fig. 3 now uses copper al wiring terminal structure schematic diagram

The A-A profile of Fig. 4 Fig. 3

With reference to Fig. 1, Fig. 2, aluminium is adopted on the utility model cylindric 1 and flat 3 tops, and copper material is adopted in flat 3 lower parts.The alloy weld layer at copper material and aluminium junction surface is certain thickness anti-oxidation is arranged, to be used for alloy-layer two metal object transition, that have low resistance, high resistance to corrosion.During use, the aluminium cable core is inserted in the circular hole 2 that is provided with by wire core diameter's requirement, adopt partial points platen press or the crimping of whole confined pressure method.Flat 3 ends and power consumption equipment contact site and power consumption equipment are touched the position to be cleaned up, and apply an amount of conduction estersil, then the bolt with appointment is fixedly connected on binding post on the power consumption equipment through fixing hole 4, has realized that promptly aluminium cable is connected with the transition of power consumption equipment.

The utility model has the advantages that:

1, stock utilization height, particularly copper material utilization rate height generally can reach more than 85%;

2, reliable welding quality, its quality can detect exactly with common inspection machine, and weld seam can anti-high temperature more than 200 ℃;

3, because the utility model processing technology is special, the brittle alloy layer of having avoided copper aluminium to produce under hot conditions has higher peeling resistance;

4, because copper material, aluminium solder side and core direction are parallel shape, its bending resistance, tensile strength are good, long service life;

5, owing to the transition material of the high purity alloys that adopts low resistance, high resistance to corrosion as copper aluminium, so not only the power delivery performance is good, the reliability height, and also resistance to corrosion is strong.

Claims

1, a kind of gold alloy solder connection oil blocking type Cu-Al binding post, one end is cylindric 1, one end is flat 3, an end of cylindric 1 has the circular hole 2 that inserts the aluminium cable line, fixing hole 4 is arranged on the flat 3, it is characterized in that cylindric 1 and flat 3 tops adopt aluminium, copper material is adopted in flat 3 lower parts, it is one that copper material and aluminium weld with the gold alloy solder connection.

2, binding post according to claim 1 is characterized in that alloy weld layer between copper material and aluminium is for having low resistance, the high purity alloys layer of high resistance to corrosion.