Electrical Contact Conductor

Abstract

The present invention proposes an electrical contact conductor, which functions in the technical field of electrical switches and provides a contact conductor that combines excellent wear resistance and good electrical conductivity. [Solution] The contact conductor has a contact conductor and a matching conductor, and the contact conductor has a base, a first conductive layer covering the base, and a wear-resistant portion connected to the base and / or the first conductive layer and protruding from the surface of the first conductive layer.

Description

[Technical Field]

[0001] The present invention relates to the technical field of electrical switches, and in particular to electrical contact conductors. [Background technology]

[0002] Conventional electrical contact conductors perform their primary function of making and breaking connections through contact. Therefore, contact conductors for various applications typically need to meet strong electrical conductivity requirements. This is why most electrical contact conductors are currently silver-plated to enhance their electrical conductivity. While meeting the requirement of strong electrical conductivity, repeated disconnection and connection of the contact conductor leads to wear of the plating film on the contact conductor, which prevents the contact conductor from meeting the design and practical application requirements. Therefore, contact conductors must also have strong abrasion resistance, which is why contact conductors must be tested for a number of cycles of abrasion resistance before use. Therefore, contact conductors must have both excellent abrasion resistance and electrical conductivity to better meet application requirements.

[0003] However, under existing technical conditions, it is difficult to achieve both wear resistance and electrical conductivity. For example, when a contact conductor includes a silver-graphene composite plating film, increasing the wear resistance of the contact conductor typically requires the addition of components to enhance the wear resistance of the plating film, such as trace metal elements. The greater the amount of trace metal elements, the stronger the wear resistance of the plating film, but the lower the conductive properties of the plating film. Furthermore, increasing the silver content of the plating film may increase the conductivity of the contact conductor, but this simultaneously reduces the wear resistance, arc resistance, and other properties of the contact conductor.

[0004] Therefore, there is an urgent need for contact conductors that have both excellent wear resistance and good electrical conductivity. Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide a contact conductor that has both excellent wear resistance and good electrical conductivity. [Means for solving the problem]

[0006] In order to solve the above technical problems, the technical means adopted in the present invention are: The electrical contact conductor provided by the present invention includes a contact conductor and a matching conductor; The contact conductor comprises a substrate, a first conductive layer covering the substrate, and a wear-resistant portion coupled to the substrate and / or the first conductive layer and protruding from the surface of the first conductive layer.

[0007] Optionally, in some embodiments, the wear-resistant portion comprises protrusions, a second conductive layer, and a wear-resistant layer, arranged in sequence, the protrusions connecting with the substrate and protruding from a surface of the substrate.

[0008] Optionally, in some embodiments, the protrusions are integrally formed with the base; or The projections are connected to the base by means of snap-togethers, riveting or welding.

[0009] Optionally, in some embodiments, the wear-resistant portion comprises a second conductive layer and a wear-resistant layer disposed in sequence, the second conductive layer disposed on one side of the wear-resistant layer closer to the substrate, and the sum of the thicknesses of the second conductive layer and the wear-resistant layer is greater than the thickness of the first conductive layer.

[0010] Optionally, in some embodiments, the thickness of the second conductive layer is different from the thickness of the first conductive layer, and the second conductive layer protrudes onto the surface of the first conductive layer; or The second conductive layer has the same thickness as the first conductive layer, and the wear-resistant layer protrudes from the surface of the first conductive layer.

[0011] Optionally, in some embodiments, the materials of the first conductive layer and the second conductive layer both include silver and graphene, and the material of the wear-resistant layer includes graphene and a trace metal element or metal compound.

[0012] Optionally, in some embodiments, the mass fraction of graphene in the material of the first conductive layer is limited to 1.5-3.0%, the mass fraction of graphene in the material of the second conductive layer is limited to 1.5-3.0%, and the mass fraction of trace metal elements in the material of the wear-resistant layer is limited to 0.3-0.8%; and / or The trace metal element or metal compound is selected from one or more of nickel, palladium, cobalt, titanium, vanadium, cadmium, chromium, manganese, tin, antimony, tungsten, bismuth, yttrium, zirconium, iridium, niobium, molybdenum, ruthenium, scandium, rhodium, indium, lanthanum, tungsten carbide, and rare earth oxides.

[0013] Optionally, in some embodiments, the trace metal element is nickel and the wear-resistant layer is a nickel-graphene plating film.

[0014] Optionally, in some embodiments, the conductive layer has a thickness of 3-20 μm and the wear-resistant layer has a thickness of 1-25 μm.

[0015] Optionally, in some embodiments, the wear-resistant portion has an arcuate curved surface, the arcuate curved surface protruding in a direction away from the substrate; and / or The height of the protrusions of the wear-resistant portion is limited to 10 to 60 μm.

[0016] Optionally, in some embodiments, the number of the wear-resistant portions is two, and the two wear-resistant portions are respectively disposed on opposite sides of the substrate.

[0017] Optionally, in some embodiments, the wear-resistant portion contacts the matching conductor before contact between the contact conductor and the matching conductor begins; or The wear-resistant portion contacts the matching conductor before separation between the contact conductor and the matching conductor begins.

[0018] Optionally, in some embodiments, the matching conductor comprises a conductor body and at least two elastic members connected by the conductor body; The contact conductor is disposed between at least two of the elastic members and contacts and couples at least two of the elastic members.

[0019] Optionally, in some embodiments, the base of the contact conductor comprises a first segment and a second segment coupled to the first segment, the second segment being conical, and the wear-resistant portion being disposed on the second segment; The wear-resistant portion supports the elastic member when the contact conductor butts against the matching conductor; The elastic member clamps the first segment when the contact conductor ends up butting against the matching conductor.

[0020] Optionally, in some embodiments, the electrical contact conductor is a switch, said contact conductor being a moving contact and said matching conductor being a static contact. [Effects of the Invention]

[0021] The contact conductor of the present invention has a protruding wear-resistant portion on the surface of the body, and when the contact conductor comes into contact with the matching conductor, the portion corresponding to the wear-resistant portion comes into contact with the matching conductor first, so that the friction between the contact conductor and the matching conductor is mainly borne by the wear-resistant portion, i.e., the wear of the contact conductor is mainly concentrated on the wear-resistant portion with good wear resistance, thereby effectively reducing and even avoiding wear of the conductive layer. In addition, not only does the good conductivity of the conductive layer improve the conductivity of the contact conductor, but the protruding wear-resistant portion of this solution also increases the contact area of ​​the contact conductor when it butts against the matching conductor, thereby further improving the conductivity of the contact conductor.

[0022] In short, the present invention solves the problem of the prior art in that it is difficult to provide contact conductors with both wear resistance and electrical conductivity. By designing and coordinating the protruding wear-resistant portion and the conductive layer, the contact conductor provided by the present invention has both excellent wear resistance and good electrical conductivity. [Brief explanation of the drawings]

[0023] In order to more clearly explain the technical solutions of the embodiments of the present invention, the drawings necessary for describing the embodiments are outlined as follows. Obviously, the drawings described below are some embodiments of the present invention, but those skilled in the art may obtain other drawings according to these drawings without exerting ordinary creative abilities.

[0024] [Figure 1] FIG. 2 is a cross-sectional view of a contact conductor provided according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a schematic view showing a contact conductor provided by Example 1 of the present invention sandwiched between two elastic members. [Figure 3] FIG. 10 is a cross-sectional view of a contact conductor provided according to a second embodiment of the present invention. [Figure 4] FIG. 10 is a schematic diagram showing that the wear-resistant portion of the contact conductor provided in Example 2 of the present invention supports the elastic member of the matching conductor. [Figure 5]FIG. 10 is a schematic diagram showing a contact conductor sandwiched between two elastic members of a matching conductor provided according to a second embodiment of the present invention. [Figure 6] FIG. 10 is a cross-sectional view of a contact conductor provided according to a third embodiment of the present invention. [Figure 7] FIG. 10 is a side view of a contact conductor provided according to a third embodiment of the present invention. [Figure 8] FIG. 10 is a cross-sectional view of a contact conductor provided according to Example 4 of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] In the following, the technical means in the embodiments of the present invention will be clearly and completely described with reference to the drawings in the embodiments of the present invention, and it is to be understood that the described embodiments are not all the embodiments but only some of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without any creative efforts fall within the protection scope of the present invention.

[0026] We will now describe in detail the technical solutions provided by the present invention. It is necessary to explain that the order in which the following examples are described does not limit the order in which the examples are used. Furthermore, in describing the present invention, "comprises" is interpreted as "includes, but is not limited to." Terms such as "first" and "second" are used only as modifiers and do not impose numerical or sequential meanings. Various embodiments of the present invention can be described in ranges, and it should be understood that the embodiments are described in ranges merely for the convenience and brevity of the present invention, but should not be construed as a strict limitation on the scope of the invention. Therefore, the description of a range should be considered to have specifically disclosed all possible subranges and single values ​​within that range.

[0027] The electrical contact conductor provided by the present invention includes a contact conductor and a matching conductor.

[0028] The contact conductor comprises a substrate, a first conductive layer covering the substrate, and a wear-resistant portion coupled to the substrate and / or the first conductive layer and protruding from the surface of the first conductive layer.

[0029] The term "electrical contact conductor" in this invention refers to a conductor applicable to electrical contacts, including but not limited to switch contact terminals, contacts, etc. Furthermore, electrical contact conductors are also called contact wires, etc., but this is within the scope of the term "electrical contact conductor" in this invention.

[0030]

[0013] Due to the height difference between the wear-resistant layer and the first conductive layer caused by the arrangement of the protruding wear-resistant portions, the positions corresponding to the wear-resistant portions first come into contact with the matching conductor, so that the friction between the contact conductor and the matching conductor is mainly borne by the wear-resistant portions, i.e., the wear of the contact conductor is mainly concentrated on the wear-resistant portions with good wear resistance, thereby effectively reducing and even avoiding wear of the conductive layer. Moreover, the contact conductor of the present invention has better conductivity based on the good conductivity of the first conductive layer, and the arrangement of the protruding wear-resistant portions increases the contact area of ​​the electrical contact conductor, thereby further improving the conductivity of the contact conductor.

[0031] The wear-resistant portion is coupled to the substrate and / or the first conductive layer and protrudes onto the surface of the first conductive layer, i.e., the wear-resistant portion covers the surface of the substrate.

[0032] Specifically, the substrate may be divided into a main body and a connector, where the main body and connector refer only to the division of different regions of the substrate. In this case, the first conductive layer may cover the main body, and the wear-resistant portion may be connected to the connector. Furthermore, the wear-resistant portion may cover the connector, thereby achieving connection between the wear-resistant portion and the connector. Furthermore, the wear-resistant portion may be connected to the first conductive layer, whereby the surface of the substrate is completely covered with the first conductive layer and the wear-resistant portion.

[0033] In some embodiments, the wear-resistant portion can include a film layer, such as a wear-resistant layer or a conductive layer. The fact that the connector protrudes from the surface of the body, or the difference in thickness between the film layer disposed on the surface of the connector and the first conductive layer disposed on the surface of the body, can lead to the wear-resistant portion protruding from the first conductive layer. As long as the wear-resistant portion protrudes from the surface of the first conductive layer, no limitations are placed on the present specification.

[0034] Specifically, the wear-resistant portion includes a protrusion, a second conductive layer, and a wear-resistant layer, which are arranged in this order. The protrusion is connected to the substrate and protrudes onto the surface of the substrate. The second conductive layer covers the surface of the protrusion, and the wear-resistant layer covers the surface of the second conductive layer. In this case, it can be understood that the arrangement of the protrusion is one of the factors that contributes to the protrusion of the wear-resistant portion. Furthermore, if the sum of the thicknesses of the wear-resistant layer and the second conductive layer is greater than the thickness of the first conductive layer, the protrusion of the wear-resistant portion may be further increased.

[0035] In some embodiments, the protrusions may be integrally molded with the base, in which case the protrusions and the base may be made of the same material. In some embodiments, the protrusions may be connected to the base by means of fastenings, riveting, or welding, in which case the protrusions and the base may be made of the same or different materials, and this is not a limitation herein.

[0036] In some embodiments, the first conductive layer may be integrally formed with the second conductive layer, in which case the first conductive layer and the second conductive layer may be made of the same material. Additionally, the first conductive layer and the second conductive layer may be applied separately, in which case the first conductive layer and the second conductive layer may be made of the same or different materials, and the present disclosure does not impose any limitations thereon.

[0037] In some embodiments, the material of the first conductive layer may be different from the material of the second conductive layer, but the material of the second conductive layer may be the same as the material of the wear-resistant layer. In this case, the second conductive layer may be integrally molded with the wear-resistant layer or may be molded separately, and this is not intended to be limiting. When the material of the second conductive layer is the same as the material of the wear-resistant layer, the wear-resistant portion can actually be considered the wear-resistant layer.

[0038] In some embodiments, the wear-resistant portion may include a second conductive layer and a wear-resistant layer disposed sequentially, the second conductive layer being disposed on one side of the wear-resistant layer closer to the substrate, and the sum of the thicknesses of the second conductive layer and the wear-resistant layer being greater than the thickness of the first conductive layer. In this case, the difference between the sum of the thicknesses of the second conductive layer and the wear-resistant layer and the thickness of the first conductive layer leads to protrusions in the wear-resistant portion, and it can be understood that the protrusions in the wear-resistant portion are actually protrusions in the wear-resistant layer.

[0039] In some embodiments, the thickness of the first conductive layer may be the same as the thickness of the second conductive layer, or the thickness of the first conductive layer may also be different from the thickness of the second conductive layer.

[0040] In addition, the thickness of the second conductive layer is different from the thickness of the first conductive layer, and the second conductive layer protrudes onto the surface of the first conductive layer. In this case, it can be understood that the difference in thickness between the second conductive layer and the first conductive layer leads to the protrusion of the wear-resistant portion.

[0041] In contrast, in some embodiments, the thickness of the second conductive layer is the same as the thickness of the first conductive layer, and the wear-resistant layer protrudes onto the surface of the first conductive layer, in which case the thickness of the wear-resistant layer can be understood to lead to the protrusion of the wear-resistant portion.

[0042] In some embodiments, the materials of the first conductive layer and the second conductive layer both include silver and graphene, while the material of the wear-resistant layer includes graphene and trace metal elements or metal compounds, thereby improving the wear resistance of the wear layer.

[0043] Among these, graphene has various advantages such as high electrical conductivity, high thermal conductivity, high strength, high flexibility, high chemical inertness, and gas barrier properties, and the presence of graphene can improve the overall performance of the conductive layer and the wear-resistant layer. In some embodiments, when forming the first conductive layer and the second conductive layer, graphene and a metal salt can be mixed in the same plating solution to form a conductive layer of graphene and an electroplated metal on the surface of the contact conductor.

[0044] In some embodiments, the mass fraction of graphene in the material of the first conductive layer may be limited to 1.5-3.0%, the mass fraction of graphene in the material of the second conductive layer may be limited to 1.5-3.0%, and the mass fraction of trace metal elements in the material of the wear-resistant layer may be limited to 0.3-0.8%.

[0045] In some embodiments, the trace metal element or metal compound is selected from one or more of nickel, palladium, cobalt, titanium, vanadium, cadmium, chromium, manganese, tin, antimony, tungsten, bismuth, yttrium, zirconium, iridium, niobium, molybdenum, ruthenium, scandium, rhodium, indium, lanthanum, tungsten carbide, and rare earth oxides.

[0046] Preferably, the trace metal element is nickel, and the wear-resistant layer is a nickel-graphene plating film.

[0047] In some embodiments, the thickness of the conductive layer is limited to 3-20 μm and the thickness of the wear-resistant layer is limited to 1-25 μm.

[0048] In some embodiments, the wear-resistant portion has an arcuate curved surface that protrudes away from the substrate.

[0049] In some embodiments, the wear-resistant portion may also be a protrusion with a shape such as a triangle or a rectangle, but is not limited thereto.

[0050] In some embodiments, the height of the protrusions of the wear-resistant portion is limited to 10 to 60 μm.

[0051] In some embodiments, the contact conductor may have one wear-resistant portion, in which case the wear-resistant portion may be a single independently protruding wear-resistant portion or a protruding wear-resistant portion that surrounds the contact conductor, and the present disclosure does not impose any limitations thereon.

[0052] In some embodiments, the contact conductor may include multiple wear-resistant portions, and in this case, the multiple wear-resistant portions may be spaced apart from one another. In some embodiments, the number of wear-resistant portions may be two, three, or four, and is not limited thereto.

[0053] In some embodiments, the number of wear-resistant portions can be two, with two wear-resistant portions disposed on opposite sides of the substrate.

[0054] In some embodiments, the wear-resistant portion contacts the matching conductor before the contact conductor and the matching conductor begin to come into contact with each other. In some embodiments, the wear-resistant portion contacts the matching conductor before the contact conductor and the matching conductor begin to separate from each other. In this way, friction between the contact conductor and the matching conductor is concentrated on the wear-resistant portion of the contact conductor, reducing wear on the contact conductor.

[0055] In some embodiments, the matching conductor comprises a conductor body and at least two elastic members connected by the conductor body.

[0056] The contact conductor is disposed between at least two of the elastic members and is capable of contacting and coupling with at least two of the elastic members.

[0057] Also, under the condition that the contact conductor butts against the matching conductor, the wear-resistant portion of the contact conductor supports at least one elastic member, so that the contact conductor is sandwiched between at least two elastic members, thereby achieving the butt-up between the contact conductor and the matching conductor.

[0058] It is necessary to understand that the support here means that the gap between the elastic members of the matching conductors is smaller than the size of the electrical contact conductors, so that the contact conductors butt against the matching conductors, and the contact conductors are pressed between the elastic members, and the protruding wear-resistant parts of the contact conductors push the elastic members outward, thereby increasing the gap between the elastic members and achieving the butting of the contact conductors and the matching conductors. In some embodiments, the butting may mean inserting the contact conductors into the matching conductors.

[0059] In addition, under the condition that the contact conductor butts against the matching conductor, the wear-resistant portion of the contact conductor maintains support toward at least one elastic member of the matching conductor, so that the contact conductor is sandwiched between at least two elastic members.

[0060] According to the above method, when the contact conductor butts against the matching conductor, under the support of the protruding wear-resistant portion, the friction applied by the matching conductor to the conductive layer of the contact conductor during the butting process is reduced and even avoided, so that the wear of the contact conductor is concentrated on the wear-resistant layer with excellent wear resistance, thereby reducing the wear of the contact conductor.

[0061] When the elastic member sandwiches the contact conductor, a clamping device may be further disposed on the matching conductor to make the contact between them more stable, and the elastic member may be clamped from the outside of the elastic member that separates from the contact conductor when the contact conductor is sandwiched between the elastic members, thereby improving the stability of the clamping between the elastic member and the contact conductor. Alternatively, an external clamping device may be used to clamp the elastic member of the matching conductor to the contact conductor.

[0062] In some embodiments, the number of elastic members can be set to 2, 3 or 4 according to actual requirements, and there is no limitation thereto here.

[0063] In some embodiments, the substrate of the contact conductor comprises a first segment and a second segment connected to the first segment, the second segment being conical, and the wear-resistant portion being disposed on the second segment.

[0064] The wear resistant portion supports the resilient member under conditions where the contact conductor butts against the matching conductor.

[0065] The resilient member pinches the first segment in a situation where the contact conductor ends up butting against the matching conductor.

[0066] The first and second segments of the body may be integrally formed or may be formed separately and then connected. For the purpose of interpretation, the term "cone" in the context of the second segment being a cone should be understood in a broad sense, and as long as it has a similar structure with reduced dimensions, it is included in the scope of protection.

[0067] In some embodiments, the space between the resilient members to accommodate the contact conductor may correspond to the shape of the contact conductor.

[0068] In some embodiments, the electrical contact conductor is a switch, the contact conductor is a moving contact, and the matching conductor is a static contact. The moving contact refers to a contact that can move during operation (butting). The static contact refers to a contact in switches, relays, and contactors that is not associated with an operating device.

[0069] Example 1 The electrical contact conductor provided by this embodiment includes a contact conductor 10 and a matching conductor 11. A cross-sectional view of the contact conductor 10 is shown in FIG.

[0070] The contact conductor 10 comprises a substrate 101 , a first conductive layer 102 and a wear-resistant portion 103 .

[0071] The base 101 comprises a first section 1001 and a second section 1002 connected to the first section 1001, the second section 1002 being formed into a cone.

[0072] The first conductive layer 102 covers the substrate 101, and the thickness of the first conductive layer 102 is 20 μm.

[0073] The wear-resistant portion 103 comprises a protrusion 1031, a second conductive layer 1032, and a wear-resistant layer 1033, which are arranged in this order, wherein the protrusion 1031 has an arcuate surface, the direct vertical distance between the apex of the arcuate surface and the surface of the body 1011 is 60 μm, the second conductive layer 1032 is 20 μm thick, and the wear-resistant layer 1033 is 25 μm thick. The wear-resistant portion 103 is connected to the base 101 and the first conductive layer 102, and the wear-resistant portion 103 protrudes from the surface of the first conductive layer 102.

[0074] The matching conductor 11 includes a conductor body 111 and two elastic members 112 connected by the conductor body 111. Between the elastic members 112, an insertion portion for inserting the contact conductor 10 into the matching conductor 11 and a receiving portion for receiving the contact conductor 10 are sequentially arranged.

[0075] When the contact conductor 10 butts against the matching conductor 11, the wear-resistant portion 103 of the contact conductor 10 supports the two elastic members 112, so that the contact conductor 10 is sandwiched between the two elastic members 112, thereby achieving the butt contact between the contact conductor 10 and the matching conductor 11.

[0076] Among them, the contact conductor 10 is a moving contact and the matching conductor 11 is a static contact.

[0077] A schematic diagram of the contact conductor 10 sandwiched between two elastic members 112 is shown in FIG.

[0078] Example 2 The electrical contact conductor provided by this embodiment includes a contact conductor 10 and a matching conductor 11. A cross-sectional view of the contact conductor 10 is shown in FIG.

[0079] The contact conductor 10 comprises a substrate 101 , a first conductive layer 102 and a wear-resistant portion 103 .

[0080] The first conductive layer 102 covers the substrate 101, and the thickness of the first conductive layer 102 is 3 μm.

[0081] The wear-resistant portion 103 comprises a protrusion 1031, a second conductive layer 1032, and a wear-resistant layer 1033, which are arranged in this order, wherein the protrusion 1031 has an arcuate surface, and the direct vertical distance between the apex of the arcuate surface and the surface of the body 1011 reaches 10 μm. The protrusion 1031 is integrally formed with the base 101, the second conductive layer 1032 has a thickness of 3 μm, and the wear-resistant layer 1033 has a thickness of 1 μm. The wear-resistant portion 103 is connected to the base 101 and to the first conductive layer 102, and the wear-resistant portion 103 protrudes from the surface of the first conductive layer 102.

[0082] The matching conductor 11 includes a conductor body 111 and two elastic members 112 connected by the conductor body 111 .

[0083] When the contact conductor 10 butts against the matching conductor 11, the wear-resistant portion 103 of the contact conductor 10 supports the two elastic members 112, so that the contact conductor 10 is sandwiched between the two elastic members 112, thereby achieving the butt contact between the contact conductor 10 and the matching conductor 11.

[0084] In a butting situation, the wear-resistant portion 103 of the contact conductor 10 supports two elastic members 112 as shown in FIG. 4, and the contact conductor 10 is sandwiched between the two elastic members 112 as shown in FIG.

[0085] Example 3 For the electrical contact conductor 10 provided by this embodiment, a cross-sectional view of the contact conductor 10 is shown in FIG. 6, and a side view of the contact conductor 10 is shown in FIG.

[0086] The contact conductor 10 comprises a substrate 101 , a first conductive layer 102 and a wear-resistant portion 103 .

[0087] The first conductive layer 102 covers the substrate 101, and the thickness of the first conductive layer 102 is 3 μm.

[0088] The wear-resistant portion 103 includes a wear-resistant layer 1033. The thickness of the wear-resistant layer 1033 reaches 25 μm. The wear-resistant portion 103 is connected to the substrate 101, the wear-resistant portion 103 is connected to the first conductive layer 102, and the wear-resistant portion 103 protrudes from the surface of the first conductive layer 102. The number of wear-resistant portions 103 can be two, and the two wear-resistant portions 103 are respectively disposed on opposite sides of the substrate 101.

[0089] Example 4 For the electrical contact conductor 10 provided by this embodiment, a cross-sectional view of the contact conductor 10 is shown in FIG.

[0090] The contact conductor 10 comprises a substrate 101 , a first conductive layer 102 and a wear-resistant portion 103 .

[0091] The first conductive layer 102 covers the substrate 101, and the thickness of the first conductive layer 102 is 10 μm.

[0092] The wear-resistant portion 103 includes a protrusion 1031, a second conductive layer 1032, and a wear-resistant layer 1033, which are arranged in this order. The protrusion 1031 is triangular, with the direct vertical distance between the apex of the triangle and the surface of the body 1011 reaching 30 μm. The protrusion 1031 is integrally formed with the base 101. The second conductive layer 1032 has a thickness of 10 μm, and the wear-resistant layer 1033 has a thickness of 20 μm. The wear-resistant portion 103 is connected to the base 101 and the first conductive layer 102, and the wear-resistant portion 103 protrudes from the surface of the first conductive layer 102. The number of wear-resistant portions 103 can be two, with two wear-resistant portions 103 arranged on opposite sides of the base 101.

[0093] Although the technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are described in the text using specific examples, the explanations of the above examples are only used to help understand the method and spirit of the present invention. Moreover, those skilled in the art can make changes to the specific embodiments and application scope according to the spirit of the present invention, and in summary, the contents of this specification should not be understood as limitations on the present invention. [Explanation of symbols]

[0094] 10 - contact conductor; 101-substrate; 1001-first segment; 1002-first segment; 102-first conductive layer; 103-wear-resistant part; 1031-projection body; 1032 - second conductive layer; 1033-wear layer; 11 - Matching conductor; 111 - conductor body; 112-Elastic member.

Claims

1. a contact conductor and a matching conductor; The contact conductor is a substrate; a first conductive layer covering the substrate; and a wear-resistant portion connected to the substrate and / or the first conductive layer and protruding from a surface of the first conductive layer, An electrical contact conductor.

2. the wear-resistant portion comprises a protrusion, a second conductive layer, and a wear-resistant layer, which are arranged in this order, and the protrusion is connected to the base and protrudes from the surface of the base; 2. The electrical contact conductor according to claim 1.

3. the protrusions are integrally formed with the base; or The protrusions are connected to the base by means of snap-together, riveting or welding.

3. The electrical contact conductor according to claim 2.

4. the wear-resistant portion includes a second conductive layer and a wear-resistant layer disposed in that order, the second conductive layer being disposed on one side of the wear-resistant layer closer to the substrate, and the sum of the thicknesses of the second conductive layer and the wear-resistant layer being greater than the thickness of the first conductive layer; 2. The electrical contact conductor according to claim 1.

5. the thickness of the second conductive layer is different from the thickness of the first conductive layer, and the second conductive layer protrudes onto the surface of the first conductive layer; or the second conductive layer has the same thickness as the first conductive layer, and the abrasion-resistant layer protrudes from the surface of the first conductive layer; 5. The electrical contact conductor according to claim 4.

6. the first conductive layer and the second conductive layer are both made of silver and graphene, and the wear-resistant layer is made of graphene and a trace metal element or a metal compound; The electrical contact conductor according to any one of claims 2 to 5.

7. The mass fraction of graphene in the material of the first conductive layer is limited to 1.5 to 3.0%, the mass fraction of graphene in the material of the second conductive layer is limited to 1.5 to 3.0%, and the mass fraction of trace metal elements in the material of the wear-resistant layer is limited to 0.3 to 0.8%; and / or the trace metal element or metal compound is selected from one or more of nickel, palladium, cobalt, titanium, vanadium, cadmium, chromium, manganese, tin, antimony, tungsten, bismuth, yttrium, zirconium, iridium, niobium, molybdenum, ruthenium, scandium, rhodium, indium, lanthanum, tungsten carbide, and rare earth oxides; 7. The electrical contact conductor according to claim 6.

8. The trace metal element is nickel, and the wear-resistant layer is a nickel-graphene plating film.

8. The electrical contact conductor according to claim 7.

9. The thickness of the conductive layer is limited to 3 to 20 μm, and the thickness of the wear-resistant layer is limited to 1 to 25 μm. The electrical contact conductor according to any one of claims 2 to 5.

10. the wear-resistant portion has an arcuate curved surface that protrudes in a direction away from the base body; and / or The height of the protrusions of the wear-resistant portion is limited to 10 to 60 μm.

2. The electrical contact conductor according to claim 1.

11. the number of the wear-resistant portions is two, and the two wear-resistant portions are respectively disposed on opposite sides of the base body; 2. The electrical contact conductor according to claim 1.

12. the wear-resistant portion contacts the matching conductor before the contact between the contact conductor and the matching conductor begins, and / or the wear-resistant portion contacts the matching conductor before separation between the contact conductor and the matching conductor begins; 2. The electrical contact conductor according to claim 1.

13. the matching conductor comprises a conductor body and at least two elastic members connected by the conductor body; The contact conductor is disposed between at least two of the elastic members and contacts and couples with at least two of the elastic members.

2. The electrical contact conductor according to claim 1.

14. the base of the contact conductor comprises a first segment and a second segment connected to the first segment, the second segment being conical, and the wear-resistant portion being disposed on the second segment; The wear-resistant portion supports the elastic member when the contact conductor butts against the matching conductor; The elastic member clamps the first segment when the contact conductor ends up butting against the matching conductor.

14. The electrical contact conductor of claim 13.

15. The contact conductor is a moving contact and the matching conductor is a static contact.

2. The electrical contact conductor according to claim 1.

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