CN218896841U - Conductive terminal and electric connector - Google Patents
Conductive terminal and electric connector Download PDFInfo
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- CN218896841U CN218896841U CN202222456556.4U CN202222456556U CN218896841U CN 218896841 U CN218896841 U CN 218896841U CN 202222456556 U CN202222456556 U CN 202222456556U CN 218896841 U CN218896841 U CN 218896841U
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Abstract
The utility model discloses a conductive terminal and an electric connector, wherein the conductive terminal is made of a metal copper plate, the conductive terminal comprises a contact area for butting with a butting terminal of the butting connector, the contact area is electroplated on the surface of the metal copper plate to form a metal coating, the metal coating comprises a platinum coating and a wear-resistant coating containing nickel element, the wear-resistant coating is arranged above the platinum coating, and the butting terminal preferentially rubs the wear-resistant coating when the conductive terminal is butted with the butting terminal of the butting connector. According to the utility model, the wear-resistant coating containing nickel element is arranged outside the corrosion-resistant platinum coating, so that the platinum coating can be prevented from being worn too early to be corroded by utilizing the good wear resistance of the wear-resistant coating. In addition, the wear-resistant coating made of nickel has low cost. In general, the conductive terminals are strong in electrolytic corrosion resistance.
Description
[ field of technology ]
The present utility model relates to a conductive terminal and an electrical connector, and more particularly, to a conductive terminal and an electrical connector with high resistance to abrasion and electrolytic corrosion.
[ background Art ]
At present, a platinum plating layer is electroplated on the surface of a metal copper plate to be used as a corrosion-resistant plating layer, and when a conductive terminal is in butt joint with a butt joint terminal of a butt joint connector, the corrosion-resistant platinum plating layer on the outermost layer is easy to wear, so that the problem of reduction of electrolytic corrosion resistance is caused.
Accordingly, there is a need for an improved conductive terminal that overcomes the above-described drawbacks.
[ utility model ]
The utility model aims to provide a conductive terminal with high wear resistance and electrolytic corrosion resistance.
The aim of the utility model is achieved by the following technical scheme: the conductive terminal comprises a contact area for butting with a butting terminal of a butting connector, wherein a metal plating layer is formed on the surface of the metal copper plate by electroplating in the contact area, the metal plating layer comprises a platinum plating layer and a wear-resistant plating layer containing nickel element, the wear-resistant plating layer is arranged above the platinum plating layer, and the butting terminal preferentially rubs the wear-resistant plating layer when the conductive terminal is butted with the butting terminal of the butting connector.
Further, the wear-resistant coating is a nickel-tungsten coating.
Further, the metal coating further comprises a palladium-nickel coating below the platinum coating and a second platinum coating below the palladium-nickel coating.
Further, the thickness of the wear-resistant coating is larger than that of the palladium-nickel coating.
Further, the thickness of the wear-resistant coating is 2 microns, and the thickness of the palladium-nickel coating is 0.75 microns.
Further, the upper surface of the wear-resistant coating is electroplated with an appearance coating, and the appearance coating is a gold coating.
Further, the metal coating is a nickel coating, a gold coating and a second platinum coating which are sequentially electroplated on the surface of the metal copper plate, and the palladium nickel coating, the platinum coating, the wear-resistant coating and the appearance coating are made of gold.
Further, the thickness of the nickel plating layer is 2 micrometers, the thickness of the second platinum plating layer is 0.5 micrometers, and the thickness of the platinum plating layer is 0.5 micrometers.
The aim of the utility model can be achieved by the following technical scheme: an electric connector comprises an insulating body and a plurality of conductive terminals which are fixed on the insulating body and are made of metal copper plates, wherein the conductive terminals comprise a grounding terminal, a signal terminal and a power terminal, the grounding terminal, the signal terminal and the power terminal comprise contact areas which are used for being in butt joint with butt joint terminals of a butt joint connector, and metal plating layers are formed on the surfaces of the metal copper plates through electroplating of the contact areas. Among the grounding terminal, the signal terminal and the power terminal, only the metal coating of the power terminal comprises a platinum coating and a wear-resistant coating containing nickel element, wherein the wear-resistant coating is arranged above the platinum coating, and the wear-resistant coating is arranged above the platinum coating so that the butt joint terminal of the butt joint connector preferentially rubs the wear-resistant coating when the conductive terminal is in butt joint with the butt joint terminal of the butt joint connector.
Further, the metal coating of the power terminal is nickel coating, gold coating, second platinum coating, palladium nickel coating, platinum coating, wear-resistant coating and appearance coating made of gold, which are sequentially electroplated from the surface of the metal copper plate. The wear-resistant coating is a nickel-tungsten coating.
Compared with the prior art, the utility model has the following beneficial effects: according to the utility model, the platinum plating layer and the wear-resistant plating layer containing nickel element are plated on the surface of the conductive terminal, and the wear-resistant plating layer is arranged above the platinum plating layer, so that when the conductive terminal is in butt joint with the butt joint terminal of the butt joint connector, the butt joint terminal preferentially rubs the wear-resistant plating layer to protect the inner corrosion-resistant platinum plating layer from being worn, and the electrolytic corrosion resistance of the conductive terminal is improved.
[ description of the drawings ]
Fig. 1 is a side view of a conductive terminal of the present utility model.
Fig. 2 is a schematic diagram of a metal plating structure of a conductive terminal according to a first embodiment of the present utility model.
Fig. 3 is a schematic view of a metal plating structure of a conductive terminal according to a second embodiment of the present utility model.
Fig. 4 is a perspective view of an electrical connector of the present utility model.
The utility model will be further described in the following detailed description in conjunction with the above-described figures.
[ detailed description ] of the utility model
Referring to fig. 1 to 2, the present utility model discloses a plating structure of a conductive terminal 1, wherein the conductive terminal 1 is made of a metal copper plate 101, and the conductive terminal 1 includes a contact area 10 for mating with a mating terminal (not shown) of a mating connector (not shown).
The contact area 10 is formed by electroplating a metal plating layer 2 on the surface of the metal copper plate 101 to improve the electrolytic corrosion resistance of the conductive terminal 1, wherein the metal plating layer 2 is a nickel plating layer 21, a gold plating layer 22, a platinum plating layer 23, a wear-resistant plating layer 24 containing nickel element, and an appearance plating layer 25 made of gold, which are electroplated in sequence from the surface of the metal copper plate 101. The reason why the wear-resistant coating 24 is disposed above the platinum coating 23 is to make the contact area 10 of the conductive terminal 1 preferentially rub against the wear-resistant coating 24 in the contact area 10 when the contact area 10 is mated with a mating terminal (not shown) of a mating connector (not shown), wherein the wear-resistant coating 24 is based on excellent wear-resistant performance, and after 1500 times of terminal plugging and unplugging friction tests, the platinum coating 23 inside the contact area is still guaranteed not to be damaged, so that the platinum coating 23 can meet the requirement of long-time electrolytic hand perspiration resistance test and not to be corroded. The platinum plating layer 23 does not refer to a plating layer having only platinum element, and the platinum plating layer 23 may be a platinum alloy plating layer having a thickness of 0.5 μm. In addition, the wear-resistant plating layer 24 containing nickel element is preferably a nickel-tungsten plating layer, which is excellent in wear resistance and low in cost, and has a thickness of 2 μm. The appearance plating layer 25 made of gold is used as the outermost layer of the metal plating layer, and the effect is to make the appearance color of the conductive terminal 1 uniform with that of the conventional terminal, so that the appearance plating layer 25 above the wear-resistant plating layer 24 can be omitted if the appearance is not considered. The nickel plating layer 21 provided on the surface of the metal copper plate 101 is used for filling up uneven places on the surface of the metal copper plate, and has corrosion resistance. The nickel plating layer 21 does not refer to a plating layer having only nickel element, and the nickel plating layer 21 may be a nickel alloy plating layer, and the thickness thereof is preferably 2 μm. The gold plating layer 22 is arranged between the nickel plating layer 21 and the platinum plating layer 23, and is due to certain internal stress existing between different plating layers, and the internal stress influences the adhesion between different plating layers. The gold plating layer 22 can buffer or reduce the internal stress between the plating layers due to the good ductility of the gold alloy, so as to prevent cracks from occurring in the plating layers.
Referring to fig. 3, in a second embodiment of the present utility model, the metal plating layer 3 is a nickel plating layer 31, a gold plating layer 32, a second platinum plating layer 33, a palladium-nickel plating layer 34, a platinum plating layer 35, a wear-resistant plating layer 36 containing nickel element, and an appearance plating layer 37 made of gold, which are plated in order from the surface of the metal copper plate 101. The metal plating layer 3 of the second embodiment is based on the metal plating layer 2 of the first embodiment, with the addition of a second platinum plating layer 33 and a palladium nickel plating layer 34. The thickness of the wear-resistant coating 36 is greater than the thickness of the palladium nickel coating 34 to ensure wear resistance. The thickness of the wear-resistant coating 36 was 2 microns and the thickness of the palladium nickel coating 34 was 0.75 microns. The metal plating layer 3 of the conductive terminal 1 in the second embodiment is more corrosion-resistant than the first embodiment. Specifically, the metal plating layer 3 is provided with a second platinum plating layer 33, a palladium-nickel plating layer 34 and a platinum plating layer 35, when the conductive terminal 1 is used for electrolysis of sweat, the platinum plating layer 35 blocks external chloride ions from entering the inner plating layer and corroding the inner plating layer, even if chloride ions slowly enter the inner part through micro-gaps of the platinum plating layer 35, when the ions reach the palladium-nickel plating layer 34, a indissolvable substance Na2PdCl4 with larger particles is generated with the palladium-nickel plating layer 34, and the indissolvable substance Na2PdCl4 with larger particles is used for blocking micropores so as to delay diffusion of the ions. Meanwhile, the second platinum plating layer 33 can block outward thermal migration of atoms in the metal copper plate 101 and the nickel plating layer 31, thereby reducing the electrolytic corrosion speed, so that the metal copper plate 101 can meet the electrolytic hand perspiration resistance test requirement for at least ten minutes without being corroded.
Referring to fig. 4, an electrical connector 200 with conductive terminals according to the present utility model includes an insulative housing 4 and a plurality of conductive terminals 1 fixed on the housing, wherein the conductive terminals include a ground terminal 11, a signal terminal 12 and a power terminal 13, and the ground terminal 11, the signal terminal 12 and the power terminal 13 include contact areas 10 for abutting with abutting terminals (not shown) of an abutting connector, and the contact areas are plated with metal plating on the surface of a metal copper plate 101. Among the ground terminal 11, the signal terminal 12 and the power terminal 13, the power terminal 13 is more corroded than the ground terminal 11 and the signal terminal 12, so that only the metal plating layer of the power terminal 13 includes a platinum plating layer 23/35 and a wear-resistant plating layer 24/36 containing nickel element disposed above the platinum plating layer, and the mating terminal preferentially rubs against the wear-resistant plating layer 24/36 when the conductive terminal 1 is mated with the mating terminal (not shown) of the mating connector.
In summary, the conductive terminal 1 and the electrical connector 200 of the present utility model have the following advantages: according to the utility model, the surface of the conductive terminal is plated with the platinum coating and the nickel-containing wear-resistant coating above the platinum coating, so that the wear-resistant coating is in butt friction with a butt joint terminal (not shown) of a butt joint connector in preference to the platinum coating, and the corrosion-resistant platinum coating and the internal coating are well-formed, thereby improving the wear resistance and corrosion resistance of the conductive terminal. The conductive terminal is used for the USB Type-C electric connector.
The foregoing is only some, but not all, embodiments of the present utility model, and any equivalent modifications of the technical solution of the present utility model will be covered by the claims of the present utility model by a person of ordinary skill in the art from reading the present specification.
Claims (10)
1. A conductive terminal made of a metal copper plate, the conductive terminal comprising a contact area for mating with a mating terminal of a mating connector, the contact area being plated with a metal plating on a surface of the metal copper plate, characterized in that: the metal coating comprises a platinum coating and a wear-resistant coating containing nickel element, wherein the wear-resistant coating is arranged above the platinum coating, and the butt-joint terminal preferentially rubs the wear-resistant coating when the conductive terminal is in butt joint with the butt-joint terminal of the butt-joint connector.
2. The conductive terminal of claim 1, wherein: the wear-resistant coating is a nickel-tungsten coating.
3. The conductive terminal of claim 1, wherein: the metal coating also comprises a palladium-nickel coating positioned below the platinum coating and a second platinum coating positioned below the palladium-nickel coating.
4. A conductive terminal according to claim 3, wherein: the thickness of the wear-resistant coating is larger than that of the palladium-nickel coating.
5. The conductive terminal of claim 4, wherein: the thickness of the wear-resistant coating is 2 microns, and the thickness of the palladium-nickel coating is 0.75 microns.
6. The conductive terminal of claim 1, wherein: the upper surface of the wear-resistant coating is electroplated with an appearance coating, and the appearance coating is a gold coating.
7. The conductive terminal of claim 1, wherein: the metal coating is nickel coating, gold coating, second platinum coating, palladium nickel coating, platinum coating, wear-resisting coating and appearance coating which are sequentially electroplated from the surface of the metal copper plate.
8. The conductive terminal of claim 7, wherein: the thickness of the nickel plating layer was 2 micrometers, the thickness of the second platinum plating layer was 0.5 micrometers, and the thickness of the platinum plating layer was 0.5 micrometers.
9. The utility model provides an electric connector, includes insulator and hold in a plurality of conductive terminal that are made of metal copper plate of insulator, conductive terminal includes ground terminal, signal terminal and power supply terminal, ground terminal, signal terminal and power supply terminal include the contact area that is used for with butt joint connector's butt joint terminal butt joint, the contact area forms the metal plating at metal copper plate surface electroplating, its characterized in that: among the grounding terminal, the signal terminal and the power terminal, only the metal coating of the power terminal comprises a platinum coating and a wear-resistant coating containing nickel element, wherein the wear-resistant coating is arranged above the platinum coating, and the butt-joint terminal preferentially rubs the wear-resistant coating when the conductive terminal is in butt joint with the butt-joint terminal of the butt-joint connector.
10. The electrical connector of claim 9, wherein: the metal coating of the power terminal is nickel coating, gold coating, second platinum coating, palladium-nickel coating, platinum coating, wear-resistant coating and appearance coating with gold, wherein the nickel coating, the gold coating, the second platinum coating, the palladium-nickel coating, the platinum coating, the wear-resistant coating and the appearance coating are sequentially electroplated on the surface of the metal copper plate, and the wear-resistant coating is nickel-tungsten coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222456556.4U CN218896841U (en) | 2022-09-16 | 2022-09-16 | Conductive terminal and electric connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222456556.4U CN218896841U (en) | 2022-09-16 | 2022-09-16 | Conductive terminal and electric connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218896841U true CN218896841U (en) | 2023-04-21 |
Family
ID=85998801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222456556.4U Active CN218896841U (en) | 2022-09-16 | 2022-09-16 | Conductive terminal and electric connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218896841U (en) |
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2022
- 2022-09-16 CN CN202222456556.4U patent/CN218896841U/en active Active
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