JPH0545911U - Connection parts for energization - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a current-carrying connection component satisfying both the current-carrying property and the corrosion resistance. In a connection component for energization, which is formed by joining dissimilar metal members, the joint interface of the dissimilar metal members is integrated by diffusion joining by hot isostatic pressing (HIP).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is for supplying power to large equipment such as electroplating equipment and electrolytic cell equipment, or for cathodic protection of ships and buildings, and connecting cables and busbars that are energized as the main trunk line of factories and buildings. The present invention relates to energizing connecting parts such as terminals and connecting sleeves used for.

[0002]

[Prior Art]

 For example, as shown in FIG. 5, a conventional high-current energizing terminal has a copper terminal portion 52 into which one end of the electric wire 4 is inserted and fixed, and the other end of the copper terminal portion 52 is fixed to a mating terminal portion 51 made of titanium by a bolt 56. . The electric wire 4 and the copper terminal portion 52 are fixed to each other by pressing a part 8 of the fitting portion from the outside. Then, the entire peripheral surface of the copper terminal portion 52 including the joint portion of the titanium terminal portion 51 and the copper terminal portion 52 and the joint portion of the copper terminal portion 52 and the electric wire 4 is subjected to anticorrosion treatment by applying urethane resin as shown by a chain line 55. is doing. As another example, there is one in which the copper terminal portion 52 is also made of titanium, and in this case, only the periphery 54 of the joint portion between the titanium terminal portion and the electric wire is subjected to anticorrosion treatment.

[0003]

[Problems to be solved by the device]

 In the former terminal, the entire exposed portion of the copper terminal portion 52 and the joints before and after the copper terminal portion 52 are covered with urethane resin 55. However, if only the resin 55 is covered, heat cycle, vibration, etc. are repeated. Since the interface between the metal and the metal peels off, a corrosive liquid (for example, 10% sulfuric acid at 60 to 70 ° C.) also penetrates into the joint interface 53 between the different metal members, particularly corroding and deteriorating the copper terminal portion 52. There's a problem. In the latter terminal, the electric wire is directly crimp-connected to the titanium terminal, and the distance from the crimping connection portion 8 to the contact surface 53 with the mating terminal 51 is long, so that the current-carrying performance is not good. An object of the present invention is to provide an excellent terminal that solves these problems and a connection component for energizing similar to it.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a connection part for energization, which is formed by joining dissimilar metal members, wherein the joint interface of the dissimilar metal members is hot isostatic press (hereinafter referred to as "HIP"). (Hereinafter abbreviated as)) to provide a current-carrying connection component integrated by diffusion bonding by treatment.

[0005]

[Action]

 The joining interface between dissimilar metal members constituting the energizing connecting part is metallurgically integrated by diffusion joining by the HIP process, improving the energizing performance and the corrosion resistance.

[0006]

【Example】

 Next, the present invention will be specifically described with reference to examples.

[First Embodiment] FIG. 1 is a vertical cross-sectional side view showing an example of an energizing terminal according to the present invention, and FIG. 2 is a plan view thereof. 1 and 2, reference numeral 1 is a titanium terminal portion, 2 is a copper terminal portion, and a portion of the copper terminal portion 2 on the opposite side of the portion connected to the electric wire 4 (the portion on the left side of FIG. 1) is a titanium end portion. It is inserted or screwed into the child part 1. It is preferable to join them by screwing. This is because the screw thread increases the contact area between titanium and copper, which improves the electrical conductivity, and the screw connection also improves the mechanical strength. Reference numeral 3 is a titanium sleeve that covers the copper terminal portion 2, and its tip portion 5 is TIG welded to the titanium terminal portion 1. The copper terminal portion 2 is screwed into the titanium terminal portion 1 with a slight clearance from the inner peripheral surface of the titanium sleeve 3. In this state, HIP treatment is performed, and the interfaces between the titanium terminal portion 1 and the copper terminal portion 2 and between the copper terminal portion 2 and the titanium sleeve 3 are diffusion-bonded. The electric wire 4 is fixed to the copper terminal portion 2 by inserting the electric wire 4 into the copper terminal portion 2 covered with the titanium sleeve 3 and crimping the portion 8 from the outside. As the electric wire 4, it is preferable to use a Teflon sheath electric wire having good corrosion resistance. 1 and 2, 6 is a coating of a heat-shrinkable tube for corrosion protection. Since the connecting portion 7 between the copper terminal portion 2 and the electric wire 4 needs to be particularly watertight, it is preferable to coat the tube 6 with urethane resin in advance.

[Embodiment 2] FIG. 3 is a partially longitudinal side view of a titanium-coated rod-shaped connection terminal according to the present invention. The base material of the terminal 32 is copper or aluminum, and the shape thereof is not particularly limited, and may be any shape such as a round bar shape, a square bar shape, a pipe shape, or a plate shape. The figure is represented by a round bar. 33 is a coating of a titanium sleeve, in which the connection terminal 32 is inserted and subjected to HIP processing, and the connection terminal 32 and the titanium sleeve 33, that is, the joint surfaces of different metal members are diffusion bonded.

In the embodiment described above, titanium is used for the outer member. However, the material is not limited to this, and in short, a material having better corrosion resistance than the inner member may be used.

[Third Embodiment] FIG. 4 is a vertical sectional side view of a sleeve for connecting dissimilar metal conductors, which is still another example of the application of the present invention. In FIG. 4, sleeves 40 and 41 are copper and aluminum or aluminum and copper, respectively. By inserting an electric wire or other metal conductor into the connection holes 42 and 43 and performing a HIP process, the dissimilar metal joint surfaces of the sleeves 40 and 41 and the conductors inserted in the sleeves are diffusion-bonded. As the dissimilar metal conductor to be connected to this connecting sleeve, it is possible to use aluminum, mild steel, titanium, nickel, silver, etc. for the copper sleeve, and copper, mild steel, titanium, nickel, silver, etc. for the aluminum sleeve. .

[0011]

[Effect of the device]

 The current-carrying connecting part of the present invention is a dissimilar metal member that constitutes the connecting part, for example, a joint surface of a copper member and a titanium member is spread-joined by hot isostatic pressing (HIP). Since they are integrated, they have the effect of simultaneously satisfying the electrical conductivity required as a connecting part and the corrosion resistance of the constituent members and the joint interface between these constituent members.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a current-carrying terminal according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a partially longitudinal side view of a titanium-coated rod-shaped connection terminal.

FIG. 4 is a vertical sectional side view of the dissimilar metal conductor connection sleeve.

FIG. 5 is a side view of a conventional energizing terminal.

[Explanation of symbols]

 1, 51 Titanium terminal part 2 Copper terminal part 3 Titanium sleeve for coating 4 Electric wire 5 TIG welding part 6 Corrosion-proof heat shrink tube 7 Connection part between terminal and electric wire 8 Crimping part 32 Connection terminal 33 Titanium sleeve 40, 41 Conductor connecting sleeve 42, 43 Connection conductor insertion hole 52 Copper or titanium terminal portion 54, 55 Urethane resin coating portion 56 Bolt

Claims (1)

[Scope of utility model registration request] 1. A connection part for energization formed by joining dissimilar metal members, wherein the joint interface of the dissimilar metal members is integrated by diffusion joining by hot isostatic pressing.