Conductive terminal, electric connector with conductive terminal and mobile terminal

Abstract

The utility model relates to the technical field of connectors, and provides a conductive terminal, an electric connector with the conductive terminal and a mobile terminal. The conductive terminal comprises a metal substrate and a plating layer structure, the metal substrate comprises a contact area located at the front end, and the plating layer structure comprises a bottom plating layer, a first plating layer, a second plating layer, a third plating layer and a fourth plating layer, the first plating layer is a platinum plating layer or a platinum alloy plating layer, the second plating layer is a palladium plating layer or a palladium alloy plating layer, the third plating layer is a platinum plating layer or a platinum alloy plating layer, the fourth plating layer is a gold plating layer, and the first plating layer is only arranged on the bottom plating layer of the contact area or arranged on the whole bottom plating layer; the second plating layer completely covers the first plating layer; and the third plating layer and the fourth plating layer are only arranged in the contact area. The wear resistance and the corrosion resistance of the terminal are improved, the service life is prolonged, the electric contact performance of the terminal is improved, abnormity caused by poor contact is prevented, and the user experience is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and in particular relates to a conductive terminal, an electric connector having the conductive terminal, and a mobile terminal. Background Art

[0002] With the development of communication technology, mobile phones and other terminal devices have become an indispensable electronic device in people's daily life. The use scenarios of mobile phones and other terminal devices are increasing, and the use environment is becoming more and more complex, which puts higher and higher requirements on the quality of terminals.

[0003] The terminal uses input / output (I / O) devices to transmit data and charge and send power, and usually uses electrical connectors as I / O devices. Electrical connectors are generally exposed to the outside. In order to maintain the stability of data transmission and charging and sending functions, the conductive terminals of the electrical connectors need to be treated to prevent electrolytic corrosion. Utility Model Content

[0004] The purpose of the utility model is to overcome at least one of the above-mentioned deficiencies of the prior art, and to provide a conductive terminal, an electrical connector having the conductive terminal, and a mobile terminal.

[0005] The technical solution of the utility model is: a conductive terminal, comprising a metal substrate and a plating structure, wherein the metal substrate comprises a contact area located at the front end, the plating structure comprises a bottom plating layer arranged on the entire surface of the metal substrate, and the thickness of the bottom plating layer is 2 to 8.5 microns;

[0006] The coating structure further includes a first coating, a second coating, a third coating and a fourth coating arranged in sequence from the bottom coating; the first coating is a platinum coating or a platinum alloy coating, and the thickness of the first coating is 0.5 to 2.5 microns, the second coating is a palladium coating or a palladium alloy coating, and the thickness of the second coating is 0.5 to 2.5 microns, the third coating is a platinum coating or a platinum alloy coating, and the thickness of the third coating is 0.25 to 2.5 microns, and the fourth coating is a gold coating, and the thickness of the fourth coating is 0.05 to 0.35 microns;

[0007] The first plating layer is only disposed on the bottom plating layer of the contact area or on the entire bottom plating layer;

[0008] The second coating completely covers the first coating;

[0009] The third plating layer and the fourth plating layer are only arranged in the contact area.

[0010] Specifically, the first coating is a platinum coating, and the thickness of the first coating is 0.5 to 2 micrometers.

[0011] Specifically, the third coating is a platinum coating, and the thickness of the third coating is 0.25 to 2 micrometers.

[0012] Specifically, the bottom plating layer is a nickel plating layer or a silver-nickel plating layer.

[0013] Specifically, the first plating layer is only disposed on the contact area, and the second plating layer is only disposed on the contact area.

[0014] Specifically, the second plating layer is a palladium-nickel alloy plating layer; the thickness of the second plating layer is 0.5 to 2 microns.

[0015] Specifically, the fourth plating layer is a gold plating layer, and the thickness of the gold plating layer is 0.05 to 0.3 micrometers.

[0016] Specifically, the bottom plating layer is a nickel plating layer, and the thickness of the bottom plating layer is 2 to 8 microns.

[0017] The utility model also provides an electric connector, comprising the above-mentioned conductive terminal.

[0018] The utility model also provides a mobile terminal, comprising the above-mentioned electric connector.

[0019] The utility model provides a conductive terminal, an electrical connector having the conductive terminal and a mobile terminal, which improve the wear resistance and corrosion resistance of the terminal, extend the service life, and improve the electrical contact performance of the terminal, prevent abnormalities caused by poor contact, and provide a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a partially enlarged schematic diagram of a conductive terminal provided in an embodiment of the utility model.

[0022] Figure 2 It is a plan view of a conductive terminal provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] It should be noted that the terms “setting” and “connection” should be understood in a broad sense. For example, it can be directly setting or connecting, or it can be indirectly setting or connecting through a central component or a central structure.

[0025] In addition, if there are terms such as "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating orientation or positional relationship in the embodiments of the present invention, they are based on the orientation or positional relationship or the conventional placement state or use state shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure, feature, device or element referred to must have a specific orientation or positional relationship, nor must it be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0026] The various specific technical features and embodiments described in the specific implementation methods can be combined in any suitable manner unless there is any contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features / embodiments in the present utility model will not be described separately.

[0027] like Figure 1 and Figure 2 As shown, a conductive terminal provided by an embodiment of the utility model includes a metal substrate 10 and a plating structure 30, wherein the metal substrate 10 includes a contact area 110 (such as Figure 2 As shown in the dashed box 110, the shaded area is the contact area 110), and the rear end of the metal substrate 10 is the welding end 120 (as shown in FIG. Figure 2 The contact area 110 can be connected to a connection device such as a charger connector and a data line connector to achieve current or data transmission. The coating structure 30 includes a bottom coating 20 disposed on the entire surface of the metal substrate 10. The bottom coating 20 can cover the entire surface of the metal substrate 10 as a whole, so that the pores of the metal substrate 10 are eliminated, which is beneficial to the setting of other coatings. The thickness of the bottom coating can be 2 to 8.5 microns;

[0028] The coating structure 30 further includes a first coating 31, a second coating 32, a third coating 33 and a fourth coating 34 which are sequentially arranged from the bottom coating 20; the first coating 31 is a platinum coating or a platinum alloy coating, and the thickness of the first coating 31 is 0.5 to 2.5 microns, the second coating 32 is a palladium coating or a palladium alloy coating, and the thickness of the second coating 32 is 0.5 to 2.5 microns, the third coating 33 is a platinum coating or a platinum alloy coating, and the thickness of the third coating 33 is 0.25 to 1.5 microns. 2.5 microns, the fourth plating layer 34 is a gold (Au) plating layer, and the thickness of the fourth plating layer 34 is 0.05 to 0.35 microns; the first plating layer 31 is only arranged on the bottom plating layer 20 of the contact area 110 or is arranged on the entire bottom plating layer 20; the second plating layer 32 completely covers the first plating layer 31; the third plating layer 33 and the fourth plating layer 34 are only arranged on the contact area 110, the third plating layer 33 covers the second plating layer 32, and the fourth plating layer 34 covers the third plating layer 33. In this embodiment, the first plating layer 31 is only arranged on the bottom plating layer 20 of the contact area 110, that is, the first plating layer 31 is only arranged on the contact area 110, which can reduce the amount of precious metals. In this embodiment, the first plating layer 31 is a platinum plating layer, which has a dense surface and high hardness, and has good wear resistance and corrosion resistance. In this embodiment, the second plating layer 32 is a platinum plating layer, which has a dense surface and high hardness, and has good wear resistance and corrosion resistance. The length of the contact area 110 can be 20% to 50% of the length of the metal substrate 10, that is, the length of the contact area 110 accounts for 20% to 50% of the overall length of the metal substrate 10. The length of the welding end 120 can be 20% to 50% of the length of the metal substrate 10, that is, the length of the welding end 120 can account for 20% to 50% of the overall length of the metal substrate 10, and the contact area 110 and the welding end 120 are respectively located at the two ends of the metal substrate 10. In a specific application, the length of the contact area 110 can be 2 to 10 mm, and the length of the welding end 120 can be 2 to 10 mm. The metal substrate 10 can be in the form of a strip sheet, and can be formed by stamping a metal sheet. Of course, the metal substrate 10 can be in a bent shape, and the overall length of the metal substrate 10 can be based on the unfolded (straightened) length. The coating structure 30 can be entirely coated on the front end (contact area 110) of the metal substrate 10. In some optional embodiments, it can also be only arranged on the front side of the contact area 110 of the metal substrate 10 (i.e., the side used for contacting a memory card or a SIM card, etc.). A local electroplating method can be used for electroplating to form the coating structure 30.

[0029] In this embodiment, the first coating 31 is a platinum coating, which has high hardness, good wear resistance and corrosion resistance.

[0030] In this embodiment, the second coating 32 is a palladium-nickel alloy coating (PdNi), which has good electrical conductivity and high bonding stability.

[0031] In this embodiment, the third coating 33 is a platinum coating having high hardness, good wear resistance and good corrosion resistance.

[0032] Specifically, the bottom plating layer 20 is a nickel plating layer or a silver-nickel plating layer, which has good corrosion resistance. The thickness of the bottom plating layer 20 is 2 to 8 microns. In this embodiment, the nickel plating layer is used as the bottom plating layer 20, and the plating layer is dense, which provides a strong condition for the formation of subsequent plating layers, improves the adhesion and bonding force of the plating layer, and improves the stability of wear resistance and corrosion resistance.

[0033] Specifically, the first plating layer 31 is only disposed on the contact area 110. The second plating layer 32 is only disposed on the contact area 110, and the production cost is low.

[0034] Specifically, the metal substrate 10 is a copper bar (copper alloy).

[0035] The utility model also provides an electric connector, comprising the above-mentioned conductive terminal, and the electric connector can be a TYPE-C, USB connector, etc.

[0036] The utility model also provides a mobile terminal, comprising the above-mentioned electrical connector, and the mobile terminal can be a mobile phone, an electronic watch, etc.

[0037] The embodiments of the utility model provide a conductive terminal, an electrical connector having the conductive terminal, and a mobile terminal, which improve the wear resistance and corrosion resistance of the terminal, extend the service life, and improve the electrical contact performance of the terminal, prevent abnormalities caused by poor contact, and provide a good user experience.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A conductive terminal, comprising a metal substrate and a plating structure, characterized in that: The metal substrate includes a contact area at the front end, and the plating structure includes a bottom plating layer disposed on the entire surface of the metal substrate, and the thickness of the bottom plating layer is 2 to 8.5 microns; The coating structure further includes a first coating, a second coating, a third coating and a fourth coating arranged in sequence from the bottom coating; the first coating is a platinum coating or a platinum alloy coating, and the thickness of the first coating is 0.5 to 2.5 microns, the second coating is a palladium coating or a palladium alloy coating, and the thickness of the second coating is 0.5 to 2.5 microns, the third coating is a platinum coating or a platinum alloy coating, and the thickness of the third coating is 0.25 to 2.5 microns, and the fourth coating is a gold coating, and the thickness of the fourth coating is 0.05 to 0.35 microns; The first plating layer is only disposed on the bottom plating layer of the contact area or on the entire bottom plating layer; The second coating completely covers the first coating; The third plating layer and the fourth plating layer are only arranged in the contact area.

2. A conductive terminal as claimed in claim 1, characterized in that: The first coating is a platinum coating, and the thickness of the first coating is 0.5 to 2 micrometers.

3. A conductive terminal as claimed in claim 1, characterized in that: The third coating is a platinum coating, and the thickness of the third coating is 0.25 to 2 microns.

4. A conductive terminal as claimed in claim 1, characterized in that: The bottom plating layer is a nickel plating layer or a silver-nickel plating layer.

5. A conductive terminal as claimed in claim 1, characterized in that: The first plating layer is only disposed on the contact area, and the second plating layer is only disposed on the contact area.

6. A conductive terminal as claimed in claim 5, characterized in that: The second plating layer is a palladium-nickel alloy plating layer; the thickness of the second plating layer is 0.5 to 2 microns.

7. A conductive terminal as claimed in claim 1, characterized in that: The fourth plating layer is a gold plating layer, and the thickness of the gold plating layer is 0.05 to 0.3 microns.

8. A conductive terminal as claimed in claim 1, characterized in that: The bottom plating layer is a nickel plating layer, and the thickness of the bottom plating layer is 2 to 8 microns.

9. An electrical connector, characterized in that: The invention comprises a conductive terminal as claimed in any one of claims 1 to 8.

10. A mobile terminal, characterized in that: Comprising an electrical connector as claimed in claim 9.

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