CN223155843U - Copper-aluminum composite contact arm - Google Patents

Abstract

The utility model discloses a copper-aluminum composite contact arm, which relates to the technical field of electric power and comprises a main body, a butt joint part, elastic pieces, radiating holes and conductive layers, wherein the main body is made of a composite material, the butt joint part is arranged at one end of the main body and used for being connected with other electric components to ensure reliable transmission of electric signals, the elastic pieces are arranged at two sides of the surface of the main body, the movable ends of the elastic pieces are provided with bolts penetrating into the main body and are positioned in the elastic pieces, the radiating holes are distributed on the surface of the main body and used for increasing air circulation, a high-strength matrix is constructed in the main body, the matrix is made of aluminum, and part of the surface of the matrix is constructed with the conductive layers.

Description

Copper-aluminum composite contact arm

Technical Field

The utility model relates to the technical field of electric power, in particular to a copper-aluminum composite contact arm.

Background

In the control of the switch cabinet, a large amount of contacts, contact arms and the like can be used, and the disconnection and the conduction are realized by controlling the separation and the combination of the contacts and the contact arms.

The copper-aluminum composite contact for the circuit breaker comprises a contact body formed by processing aluminum materials, wherein a copper film layer surrounding the contact body is coated at the position, close to a contact end, of the contact body; the copper-aluminum composite contact arm comprises a contact arm body formed by processing aluminum materials, and a groove which is formed near the contact end and surrounds the contact arm body is formed on the side wall of the contact arm body.

Conventional contact arms are mostly made of a single material, such as pure copper or pure aluminum. The pure copper contact arm has good conductivity but higher cost, and the pure aluminum contact arm has lower cost but relatively poorer conductivity and corrosion resistance. In order to balance the cost and the performance, contact arms made of various composite materials are appeared on the market, but the contact arms are poor in stability after being installed, and due to the working connection characteristics of the contact arms, certain heat is easy to generate around conducting parts of the contact arms, so that the heat dissipation effect is poor.

Disclosure of utility model

The utility model aims to solve the defects in the prior art and provides a copper-aluminum composite contact arm. According to the utility model, the copper film layer is coated on the key part of the aluminum contact arm, so that the advantage complementation of the copper-aluminum material is realized, the cost is reduced, the stability and the service life of the contact arm are improved, the contact arm can be further and firmly connected under the action of the bolt and the elastic piece when being connected and installed, the looseness is reduced, and the connection strength and the stability are improved.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

A copper aluminum composite contact arm comprising:

A main body made of a composite material;

The butt joint part is arranged at one end of the main body and used for being connected with other electric components to ensure reliable transmission of electric signals;

The elastic piece is arranged on two sides of the surface of the main body, a plug pin penetrating into the main body is arranged at the movable end of the elastic piece, and the plug pin is positioned in the elastic piece;

and the heat dissipation holes are distributed on the surface of the main body and are used for increasing air circulation.

The utility model further provides that the main body is internally provided with a high-strength matrix, and the matrix is made of aluminum.

The utility model further provides that a conductive layer is constructed on part of the surface of the substrate, and the conductive layer is made of copper.

The utility model further provides that the conductive layer is formed on the surface of the substrate by electroplating, electroless plating, physical vapor deposition or other methods.

The utility model further provides that the surface of the main body is provided with an insulating layer, and the insulating layer and the radiating holes are staggered.

The utility model further provides that the insulating layer is made of high-temperature-resistant and aging-resistant insulating materials.

The utility model further provides that the elastic piece is one or a combination of a plurality of spring pieces, spring pins or elastic rubber bodies.

The utility model has the beneficial effects that the copper film layer is coated on the key part of the aluminum contact arm, so that the advantage complementation of the copper-aluminum material is realized, the cost is reduced, the stability and the service life of the contact arm are improved, the contact arm can be further and firmly connected under the action of the bolt and the elastic piece when being connected and installed, the looseness is reduced, and the connection strength and the stability are improved.

1. This copper aluminium compound arm that touches cooperatees through being provided with bolt and elastic component for touch the arm when being connected, personnel's accessible outwards pulls the bolt, makes the tensile elastic component of bolt and break away from in touching the arm, later when being connected the installation through butt joint portion and butt joint portion, because the part is located and touches the arm inboard, alright loosen the bolt afterwards, the elastic component can pull the bolt and reset in order to be connected to connecting component, thereby further stabilize touching the connection of arm, reduce not hard up, improve joint strength and stability.

2. This copper aluminium composite touch arm, through being provided with the louvre and cooperate with conducting layer and insulating layer, the design in louvre makes the touch arm can give off rapidly in the heat that produces in the course of the work, the temperature of touching the arm has been reduced, thereby its job stabilization nature and reliability have been improved, through improving radiating efficiency, the design in louvre helps reducing the temperature of touching the arm, thereby slow down its ageing speed, increase of service life, copper aluminium combined material has combined the high conductivity of copper and the light of aluminium, advantages such as corrosion-resistant, the conducting layer adopts this kind of material to make, can further improve the conductive performance of touching the arm, satisfy the electrical connection demand of high requirement, compared with pure copper material, copper aluminium combined material has more advantages in the cost, can reduce cost when guaranteeing the conductive performance, improve the competitiveness of product.

Drawings

FIG. 1 is a schematic view of the overall structure of a copper-aluminum composite contact arm according to the present utility model;

FIG. 2 is a schematic diagram of a front cross-sectional structure of a copper-aluminum composite contact arm according to the present utility model;

fig. 3 is a schematic diagram of an internal structure of a copper-aluminum composite contact arm according to the present utility model.

In the figure, 1, a main body, 2, a butt joint part, 3, a bolt, 4, an elastic piece, 5, a heat dissipation hole, 6, an insulating layer, 7, a conductive layer and 8, and a base body.

Detailed Description

The technical scheme of the patent is further described in detail below with reference to the specific embodiments.

Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the patent and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and are therefore not to be construed as limiting the patent.

In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.

Referring to fig. 1-3, a copper-aluminum composite contact arm comprises a main body 1 made of composite materials, wherein the contact arm has excellent conductive performance, reduces overall weight and is convenient to install and transport by combining the advantages of high conductivity of copper, light weight, corrosion resistance and the like of aluminum, a butting part 2 is arranged at one end of the main body 1 and is used for being connected with other electric components to ensure reliable transmission of electric signals, the butting part 2 is designed to ensure stable and reliable connection of the contact arm with the other electric components, so that continuity and stability of the electric signals are ensured, an elastic piece 4 is arranged at two sides of the surface of the main body 1, a plug pin 3 penetrating into the main body 1 is arranged at the movable end of the elastic piece 4, and the plug pin 3 is positioned in the elastic piece 4.

Furthermore, the body 1 is internally provided with the high-strength matrix 8, the matrix 8 is made of aluminum, aluminum is used as light metal, the density is low, the aluminum matrix 8 can be used for remarkably reducing the overall weight of the touch arm, the installation, the transportation and the operation are convenient, the aluminum has excellent heat conducting performance, and the aluminum matrix 8 can rapidly conduct heat generated in the touch arm to the surface and exchange heat with external air through the heat dissipation holes 5, so that the working temperature of the touch arm is reduced.

Further, the conductive layer 7 is formed on a part of the surface of the substrate 8, the conductive layer 7 is made of copper, and as a further implementation manner in this embodiment, the conductive layer 7 is formed on the surface of the substrate 8 by electroplating, chemical plating or physical vapor deposition, and the like.

Further, the surface structure of main part 1 has insulating layer 6, and insulating layer 6 staggers with louvre 5 and sets up, through this kind of design, and insulating layer 6's main role is isolated electric current, prevents that electrical equipment's metal part from taking place direct contact with other electrically conductive parts or human body to avoid the emergence of electric shock accident, and insulating layer 6's position makes things convenient for personnel to operate the touch arm, provides operating space.

Further, the insulating layer 6 is made of a high-temperature-resistant and aging-resistant insulating material, and through the design, the insulating material can keep the insulating performance of the insulating layer in a high-temperature environment, so that current leakage or short circuit is effectively prevented, safety accidents such as fire disaster and the like are avoided, the high-temperature-resistant and aging-resistant insulating material can keep stable insulating performance, is not influenced by temperature change and time, and ensures that the equipment can keep stable electrical performance in a long-term use process.

Further, the elastic piece 4 is one or a plurality of combinations of a spring piece, a spring needle or an elastic rubber body, through the design, the bolt 3 can perform better elastic movement under the action of the elastic piece 4, the flexibility is improved, the reset is realized, and the follow-up operation and use are convenient.

The utility model is characterized in that when the utility model is used, the contact arm is connected with a using position for installation, when the contact arm is connected, a person can pull the bolt 3 outwards to enable the bolt 3 to stretch the elastic piece 4 and separate from the contact arm, then when the contact arm is connected with the butt joint part for installation through the butt joint part 2, the bolt 3 can be released after the part is positioned on the inner side of the contact arm, the elastic piece 4 can pull the bolt 3 to reset for connection into the connecting part, so that the connection of the contact arm is further stabilized, the looseness is reduced, the connection strength and the stability are improved, the heat generated by the contact arm in the working process can be rapidly dissipated through the design of the heat dissipation hole 5, the temperature of the contact arm is reduced, the working stability and the reliability of the contact arm are improved, the heat dissipation efficiency is improved, the design of the heat dissipation hole 5 is beneficial to reducing the temperature of the contact arm, the aging speed of the contact arm is slowed down, the service life is prolonged, and the copper-aluminum composite material combines the advantages of high conductivity of copper, the light weight of aluminum, corrosion resistance and the like.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (7)

1. A copper aluminum composite contact arm, comprising:

a main body (1) made of a composite material;

The butt joint part (2) is arranged at one end of the main body (1) and is used for being connected with other electric components to ensure reliable transmission of electric signals;

The elastic piece (4) is arranged on two sides of the surface of the main body (1), the movable end of the elastic piece (4) is provided with a plug pin (3) penetrating into the main body (1), and the plug pin (3) is positioned in the elastic piece (4);

And the heat dissipation holes (5) are distributed on the surface of the main body (1) and are used for increasing air circulation.

2. A copper-aluminum composite contact arm according to claim 1, wherein the body (1) is internally structured with a high-strength base body (8), the base body (8) being of aluminum construction.

3. A copper-aluminum composite contact arm according to claim 2, characterized in that a part of the surface of the base body (8) is structured with a conductive layer (7), and the conductive layer (7) is made of copper.

4. A copper-aluminium composite contact arm according to claim 3, characterized in that the conductive layer (7) is formed on the surface of the substrate (8) by electroplating, electroless plating or physical vapour deposition.

5. The copper-aluminum composite contact arm according to claim 1, wherein an insulating layer (6) is structured on the surface of the main body (1), and the insulating layer (6) and the heat dissipation holes (5) are staggered.

6. The copper-aluminum composite contact arm according to claim 5, wherein the insulating layer (6) is made of a high-temperature-resistant and aging-resistant insulating material.

7. The copper-aluminum composite contact arm according to claim 1, wherein the elastic piece (4) is one or a combination of a plurality of spring pieces, spring pins or elastic rubber bodies.