Copper-aluminum composite contact arm

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 made of composite materials. The butt joint part is arranged at one end of the main body and is used for being connected with other electrical components to ensure reliable transmission of electrical signals; the elastic pieces are installed on the two sides of the surface of the main body, the movable ends of the elastic pieces are provided with plug pins penetrating into the main body, and the plug pins are located in the elastic pieces; the heat dissipation holes are distributed in the surface of the main body and used for increasing air circulation, a high-strength base body is constructed in the main body, the base body is made of aluminum, and a conducting layer is constructed on a part of the surface of the base body, the key part of the aluminum contact arm is coated with the copper film layer, so that the advantage complementation of copper and aluminum materials is realized, the cost is reduced, and the service life of the aluminum contact arm is prolonged. The stability of the contact arm is improved, the service life of the contact arm is prolonged, the contact arm can be further stably connected under the action of the plug pin and the elastic piece when the contact arm is connected and installed, looseness is reduced, and the connection strength and stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power, in particular to a copper-aluminum composite contact arm. Background Art

[0002] In the control of switch cabinets, contacts and contact arms are widely used. By controlling the separation and combination of contacts and contact arms, power-off and conduction are achieved.

[0003] Referring to the existing patent publication number: CN215496407U, a copper-aluminum composite contact, contact arm and blade for a circuit breaker. Among them, the copper-aluminum composite contact includes a contact body formed by processing aluminum material, and a copper film layer is coated around the contact body near the contact end; the copper-aluminum composite contact arm includes a contact arm body formed by processing aluminum material, and a groove is formed around the side wall of the contact arm body near the contact end. The utility model can greatly reduce the cost of contacts and contact arms, and ensure the stability and service life of contacts and contact arms, thus greatly reducing the use cost of contacts and contact arms.

[0004] Most traditional contact arms are made of a single material, such as pure copper or pure aluminum. The pure copper contact arm has good electrical conductivity but high cost; the pure aluminum contact arm has low cost, but relatively poor electrical conductivity and corrosion resistance. In order to balance cost and performance, various composite material contact arms have emerged on the market, but the stability of the contact arm after installation is poor, and due to the working connection characteristics of the contact arm, certain heat is likely to be generated around its conduction part, and the heat dissipation effect is poor. Content of the Utility Model

[0005] The purpose of the utility model is to solve the disadvantages existing in the prior art, and a copper-aluminum composite contact arm is proposed. By coating a copper film layer on the key parts of the aluminum contact arm, the utility model realizes the complementary advantages of copper and aluminum materials, not only reduces the cost, but also improves the stability and service life of the contact arm, and enables the contact arm to be further firmly connected under the action of a plug pin and an elastic member when connected and installed, reducing looseness and improving the connection strength and stability.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A copper-aluminum composite contact arm, comprising:

[0008] A main body, made of a composite material;

[0009] A docking part, arranged at one end of the main body, used for connecting with other electrical components to ensure reliable transmission of electrical signals;

[0010] An elastic member is installed on both sides of the surface of the main body, and a pin penetrating into the main body is installed at the movable end of the elastic member, and the pin is located in the elastic member;

[0011] Heat dissipation holes are distributed on the surface of the main body to increase air circulation.

[0012] The utility model is further configured such that the internal structure of the main body is provided with a high-strength matrix, and the matrix is made of aluminum.

[0013] The utility model is further configured that a conductive layer is constructed on a part of the surface of the substrate, and the conductive layer is made of copper.

[0014] The utility model is further configured that the conductive layer is formed on the surface of the substrate by electroplating, chemical plating or physical vapor deposition.

[0015] The utility model is further configured such that an insulating layer is constructed on the surface of the main body, and the insulating layer and the heat dissipation holes are staggered.

[0016] The utility model is further configured that the insulating layer is made of high temperature resistant and aging resistant insulating material.

[0017] The utility model is further configured that the elastic member is a combination of one or more of a spring sheet, a spring needle or an elastic rubber body.

[0018] The beneficial effects of the utility model are as follows: the utility model realizes the complementary advantages of copper and aluminum materials by coating the key parts of the aluminum contact arm with a copper film layer, which not only reduces the cost but also improves the stability and service life of the contact arm, and enables the contact arm to be further firmly connected through the action of the latch and the elastic part when connected and installed, reduces looseness, and improves the connection strength and stability.

[0019] 1. The copper-aluminum composite contact arm is provided with a latch and an elastic member, so that when the contact arms are connected, a person can pull the latch outward to make the latch stretch the elastic member and disengage from the contact arm. Then, when the contact arms are connected and installed with the docking part, since the member is located on the inner side of the contact arm, the latch can be loosened, and the elastic member can pull the latch to reset and connect to the connecting member, thereby further stabilizing the connection of the contact arm, reducing looseness, and improving the connection strength and stability.

[0020] 2. The copper-aluminum composite contact arm is provided with heat dissipation holes that cooperate with the conductive layer and the insulating layer. The design of the heat dissipation holes enables the heat generated during the operation of the contact arm to be quickly dissipated, reducing the temperature of the contact arm, thereby improving its working stability and reliability. By enhancing the heat dissipation efficiency, the design of the heat dissipation holes helps to lower the temperature of the contact arm, thus slowing down its aging rate and extending its service life. The copper-aluminum composite material combines the advantages of high electrical conductivity of copper and light weight and corrosion resistance of aluminum. The conductive layer made of this material can further improve the electrical conductivity of the contact arm to meet the high-demand electrical connection requirements. Compared with pure copper materials, the copper-aluminum composite material has an advantage in cost, which can reduce costs while ensuring electrical conductivity and enhancing the competitiveness of the product. Brief Description of the Drawings

[0021] Figure 1 FIG. is a schematic diagram of the overall structure of a copper-aluminum composite contact arm proposed by the present utility model;

[0022] Figure 2 FIG. is a schematic diagram of the front cross-sectional structure of a copper-aluminum composite contact arm proposed by the present utility model;

[0023] Figure 3 FIG. is a schematic diagram of the internal structure of a copper-aluminum composite contact arm proposed by the present utility model.

[0024] In the figure: 1, main body; 2, docking part; 3, plug; 4, elastic member; 5, heat dissipation hole; 6, insulating layer; 7, conductive layer; 8, substrate. Detailed Description of the Embodiments

[0025] The technical solutions of this patent will be further described in detail below in conjunction with the specific embodiments.

[0026] The embodiments of this patent will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain this patent and should not be construed as a limitation of this patent.

[0027] In the description of this patent, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying 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 construed as a limitation of this patent.

[0028] In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "linkage", and "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0029] Referring to Figures 1-3 , a copper-aluminum composite contact arm includes: a main body 1 made of a composite material, which combines the high electrical conductivity of copper and the light weight and corrosion resistance of aluminum, so that the contact arm not only has excellent electrical conductivity but also reduces the overall weight, facilitating installation and transportation; a docking part 2 provided at one end of the main body 1 for connecting with other electrical components to ensure the reliable transmission of electrical signals. The design of the docking part 2 ensures that the contact arm can be firmly and reliably connected to other electrical components, thus ensuring the continuity and stability of electrical signals; an elastic member 4 installed on both sides of the surface of the main body 1. A plug 3 penetrating into the main body 1 is installed at the movable end of the elastic member 4, and the plug 3 is located within the elastic member 4. When connecting, a person can pull the plug 3 outwards, causing the plug 3 to stretch the elastic member 4 and disengage from the contact arm. Subsequently, when connecting and installing with the docking part 2 to the docking position, since the component is located inside the contact arm, the plug 3 can then be released, and the elastic member 4 can pull the plug 3 back to its original position to connect to the connecting component, thereby further stabilizing the connection of the contact arm, reducing looseness, and improving the connection strength and stability; heat dissipation holes 5 distributed on the surface of the main body 1 for increasing air circulation.

[0030] Furthermore, a high-strength matrix 8 is constructed inside the main body 1. The matrix 8 is made of aluminum. With this design, aluminum, as a light metal, has a low density. Using the aluminum matrix 8 can significantly reduce the overall weight of the contact arm, facilitating installation, transportation, and operation. Aluminum has excellent thermal conductivity, and the aluminum matrix 8 can quickly conduct the heat generated inside the contact arm to the surface and exchange heat with the outside air through the heat dissipation holes 5, thereby reducing the operating temperature of the contact arm.

[0031] Furthermore, a conductive layer 7 is constructed on a part of the surface of the matrix 8. The conductive layer 7 is made of copper. As a further implementation method in this embodiment, the conductive layer 7 is formed on the surface of the matrix 8 by methods such as electroplating, electroless plating, or physical vapor deposition. With this design, the conductive layer made of this material can further improve the electrical conductivity of the contact arm to meet the high-demand electrical connection requirements. Compared with pure copper materials, copper-aluminum composite materials have more cost advantages and can reduce costs while ensuring electrical conductivity, improving the competitiveness of products.

[0032] Furthermore, the surface of the main body 1 is constructed with an insulating layer 6, and the insulating layer 6 and the heat dissipation holes 5 are staggered. Through this design, the main function of the insulating layer 6 is to isolate the current and prevent the metal part of the electrical equipment from making direct contact with other conductive parts or the human body, thereby avoiding electric shock accidents. In addition, the position of the insulating layer 6 is convenient for personnel to operate the contact arm and provides operating space.

[0033] Furthermore, the insulating layer 6 is made of high-temperature resistant and aging-resistant insulating material. Through this design, the insulating material can maintain its insulating properties in a high-temperature environment, effectively prevent current leakage or short circuit, and avoid the occurrence of safety accidents such as fire. The high-temperature resistant and aging-resistant insulating material can maintain stable insulating properties and is not affected by temperature changes and time, ensuring that the equipment can maintain stable electrical properties during long-term use.

[0034] Furthermore, the elastic member 4 is one or more combinations of spring sheets, spring needles or elastic rubber bodies. Through this design, the latch 3 can perform better elastic activities under the action of the elastic member 4, thereby improving flexibility and resetting, and facilitating subsequent operations.

[0035] Working principle: When using the utility model, first connect and install the contact arm with the use position. When connecting, the personnel can pull the latch 3 outward so that the latch 3 stretches the elastic member 4 and disengages from the contact arm. Then, when connecting and installing with the docking position through the docking portion 2, since the component is located on the inner side of the contact arm, the latch 3 can be loosened, and the elastic member 4 can pull the latch 3 to reset to connect to the connecting component, thereby further stabilizing the connection of the contact arm, reducing looseness, and improving the connection strength and stability. Heat dissipation holes 5 are provided on the surface of the contact arm. The design of the heat dissipation holes 5 allows the heat generated by the contact arm during operation to be quickly dissipated, reducing the temperature of the contact arm, thereby improving its working stability and reliability, and improving the heat dissipation efficiency. The design of the heat dissipation holes 5 helps to reduce the temperature of the contact arm, thereby slowing down its aging speed and extending its service life. The copper-aluminum composite material combines the advantages of copper's high conductivity and aluminum's light weight and corrosion resistance.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A copper-aluminum composite contact arm, characterized in that, include: A main body (1) made of a composite material; A docking portion (2) is arranged at one end of the main body (1) and is used to connect with other electrical components to ensure reliable transmission of electrical signals; An elastic member (4) is mounted on both sides of the surface of the main body (1), a latch (3) penetrating into the main body (1) is mounted on the movable end of the elastic member (4), and the latch (3) is located inside the elastic member (4); Heat dissipation holes (5) are distributed on the surface of the main body (1) and are used to increase air circulation.

2. The copper-aluminum composite contact arm according to claim 1, wherein The main body (1) is internally structured with a high-strength matrix (8), and the matrix (8) is made of aluminum.

3. The copper-aluminum composite contact arm according to claim 2, wherein A conductive layer (7) is formed on a portion of the surface of the base body (8), and the conductive layer (7) is made of copper.

4. The copper-aluminum 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, chemical plating or physical vapor deposition.

5. A copper-aluminum composite contact arm according to claim 1, characterized in that, An insulating layer (6) is formed on the surface of the main body (1), and the insulating layer (6) and the heat dissipation holes (5) are arranged in a staggered manner.

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

7. A copper-aluminum composite contact arm according to claim 1, characterized in that, The elastic member (4) is a combination of one or more of a spring sheet, a spring needle or an elastic rubber body.

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