connector

Abstract

The utility model discloses a kind of connectors, it is related to connector field, wherein, connector includes: shell, be equipped with jack, the inner wall of the jack is equipped with first contact area, and first contact area is plated with first plating layer;And reed, be in the jack, the reed is equipped with for contacting pin retraction portion, the direction of the end of the reed to the retraction portion, the inner diameter of the reed gradually decreases, the reed is equipped with third contact area and fourth contact area, and both are plated with second plating layer, the material configuration of first plating layer and second plating layer is noble metal, the third contact area is located in the outer wall of the reed, the first contact area is contacted with the third contact area, the fourth contact area is located in the inner wall of the retraction portion, and for contacting external pin.The connector provided in the utility model technical scheme can reduce overall cost while ensuring contact performance.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a connector. Background Technology

[0002] As a core component in electronic systems for achieving electrical connections and signal transmission, the performance and reliability of electrical connectors directly affect the stable operation of the entire system. Connector terminals are typically made of base metals such as copper or copper alloys. To ensure excellent conductivity, corrosion resistance, oxidation resistance, and stable contact resistance, a layer of precious metal plating, such as gold, palladium, silver, or their alloys, is usually applied to the surface of the terminal substrate.

[0003] However, precious metals are scarce strategic resources with high and volatile market prices. Currently, the electroplating schemes for connectors easily lead to the waste of precious metals, resulting in high overall material costs. Utility Model Content

[0004] The main purpose of this utility model is to provide a connector that solves the technical problem that the precious metal plating of current connectors easily leads to the waste of precious metal materials and high overall cost.

[0005] To achieve the above objectives, the connector proposed in this utility model includes: The housing includes a socket, the inner wall of which has a first contact area, and the first contact area is coated with a first plating layer; and A spring is disposed within the socket. The spring has a retractable portion for contacting a pin. The inner diameter of the spring gradually decreases from its end to the retractable portion. The spring has a third contact area and a fourth contact area, both of which are plated with a second plating layer. The first plating layer and the second plating layer are made of precious metals. The third contact area is disposed on the outer wall of the spring, and the first contact area contacts the third contact area. The fourth contact area is disposed on the inner wall of the retractable portion and is used to contact an external pin.

[0006] In one embodiment, the inner wall of the socket is further provided with a second contact area, and the outer wall of the spring is further provided with a fifth contact area. The second contact area contacts the fifth contact area, and the third contact area and the fifth contact area are respectively located near the two ends of the spring. The second contact area is coated with the first coating layer, and the fifth contact area is coated with the second coating layer.

[0007] In one embodiment, in the axial direction of the socket, the extension length of the first contact area is greater than the extension length of the third contact area, and / or the extension length of the second contact area is greater than the extension length of the fifth contact area.

[0008] In one embodiment, the inner wall of the socket is further provided with a transition area and an extension area. The transition area is located between the first contact area and the second contact area, and the extension area is located on the side of the first contact area away from the transition area. The transition area and / or the extension area are coated with a third coating.

[0009] In one embodiment, the material of the second coating is configured to be one or more of copper and nickel, or the material of the third coating is configured to be a precious metal, and the thickness of the third coating is less than that of the first coating.

[0010] In one embodiment, the precious metal is configured as one or more of gold, silver, palladium, and platinum.

[0011] In one embodiment, the reed includes a first connecting ring, a second connecting ring, and a plurality of connecting pieces connecting the first connecting ring and the second connecting ring. The third contact area is disposed on the outer wall of the first connecting ring and arranged circumferentially along the first connecting ring. The fifth contact area is disposed on the outer wall of the second connecting ring and arranged circumferentially along the second connecting ring. The contraction portion is disposed on the connecting pieces.

[0012] In one embodiment, the housing is provided with a through hole that communicates with the insertion hole.

[0013] In one embodiment, the connector further includes a pressure cap, and a limiting platform is provided on the inner wall of the socket. One end of the spring abuts against the limiting platform, and the other end is connected to the pressure cap. The pressure cap cooperates with the limiting platform to limit the displacement of the spring in the axial direction of the socket.

[0014] In one embodiment, the outer wall of the housing is provided with a slot, and the cover includes a first snap-fit ​​part and a second snap-fit ​​part. The first snap-fit ​​part snaps into the slot, and the second snap-fit ​​part abuts against the spring and presses the spring against the inner wall of the insertion hole.

[0015] This utility model's technical solution employs a spring-loaded contact element placed within a socket, where the spring contacts the socket and is used to connect a pin for electrical or communication connection. A first contact area is formed on the inner wall of the socket and coated with a first plating layer. A second plating layer of precious metal is coated on the third contact area where the spring contacts the housing and the fourth contact area where it contacts the external pin. The first and third contact areas are in contact, and the fourth contact area is located on the inner wall of the retractable portion and contacts the pin component inserted into the spring. Both the first and second plating layers are precious metal layers, thereby achieving low contact resistance and high wear resistance. Furthermore, by only setting the plating layer in the contact areas, overall costs can be reduced while ensuring contact performance. Plating precious metals only in critical contact areas reduces precious metal waste and enhances product competitiveness. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an embodiment of the connector provided by this utility model; Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of the connector provided by this utility model; Figure 3 A schematic diagram of the structure of the housing of the connector embodiment provided by this utility model.

[0018] Explanation of icon numbers: 100. Housing; 110. Insertion hole; 111. First contact area; 112. Second contact area; 113. Transition area; 114. Extension area; 120. Through hole; 130. Limiting platform; 140. Slot; 200, Spring; 210, First connecting ring; 211, Third contact area; 220, Second connecting ring; 221, Fifth contact area; 230, Fourth contact area; 240, Retractable part; 250, Connecting piece; 300, pressure cap; 310, first snap-fit ​​part; 320, second snap-fit ​​part.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] In existing technologies, connector terminals are typically made of base metals such as copper or copper alloys. To ensure excellent conductivity, corrosion resistance, oxidation resistance, and stable contact resistance, a precious metal plating layer, such as gold, palladium, silver, or their alloys, is usually applied to the surface of the terminal substrate. However, precious metals are scarce strategic resources with high and volatile market prices. Current electroplating methods for connectors tend to waste precious metals, resulting in high overall material costs.

[0024] This utility model proposes a connector.

[0025] Please see Figures 1 to 3 In one embodiment of this utility model, the connector includes: a housing 100 and a spring 200, wherein the housing 100 is provided with a socket 110, the inner wall of the socket 110 is provided with a first contact area 111, and the first contact area 111 is plated with a first plating layer; the spring 200 is disposed in the socket 110, the spring 200 is provided with a retractable portion 240 for contacting a pin, the inner diameter of the spring 200 gradually decreases from the end of the spring 200 to the retractable portion 240, the spring 200 is provided with a third contact area 211 and a fourth contact area 230, both of which are plated with a second plating layer, the material of the first plating layer and the second plating layer is configured as a precious metal, the third contact area 211 and the fifth contact area 221 are disposed on the outer wall of the spring 200, the first contact area 111 contacts the third contact area 211, the fourth contact area 230 is disposed on the inner wall of the retractable portion 240 and is used to contact an external pin.

[0026] In this embodiment, the housing 100 serves as the supporting shell of the connector and has a socket 110. The spring 200 is fixedly installed in the socket 110 and is used to contact the pin to achieve information transmission. The pin is an external structure adapted to the connector. In the prior art, the spring 200 is generally plated with precious metal, but the contact area between the spring 200 and the pin and socket 110 is a specific area, and precious metal in the non-contact area is wasted. In this embodiment, the inner wall of the socket is provided with a first contact area 111, the third contact area 211 of the spring 200 contacts the first contact area 111, and the fourth contact area 230 of the spring 200 is used to contact the pin. The contact areas are plated with a first plating layer and a second plating layer made of precious metal to ensure contact performance. At the same time, compared with the prior art, it can also reduce the overall cost and reduce the waste of precious metal. Additionally, it should be noted that, in order to improve conductivity, a precious metal plating process is usually used in the area where the reed 200 is in direct contact. The materials of the first and second plating layers can be the same or different, and the thickness of both layers meets the thickness specifications of the plating layer in the contact area.

[0027] refer to Figure 1 As shown, the third contact area 211 is close to the end of the spring 200 and located on the outer wall of the spring 200. The position of the first contact area 111 is adapted to the third contact area 211. The fourth contact area 230 is located on the inner wall of the spring 200 and is positioned near the center. Here, the center refers to the center in the axial direction, that is, the contraction portion 240 of the spring 200. In specific implementation, the contraction portion 240 is used to contact and insert the pin. The contraction portion 240 is close to the center of the spring 200, and the diameter of the contraction portion 240 is smaller than the inner diameter of both ends of the spring 200 to facilitate the insertion and clamping of the pin, thereby ensuring the stability of the insertion and the stable transmission of data. Specifically, the diameter of the spring 200 gradually decreases along the line connecting the two ends of the spring 200 to the contraction portion 240.

[0028] This utility model's technical solution employs a spring 200 disposed within a socket 110, with the spring 200 contacting the socket 110. The spring 200 is used to connect a pin to achieve electrical or communication connections. A first contact area 111 is formed on the inner wall of the socket 110 and coated with a first plating layer. A second plating layer of precious metal is coated on the third contact area 211 and the second contact area of ​​the spring 200 in contact with the housing 100, as well as the fourth contact area 230 in contact with the external pin. The first contact area 111 contacts the third contact area 211, and the fourth contact area 230 is located on the inner wall of the retractable portion 240 and contacts the component inserted into the spring. Both the first and second plating layers are precious metal layers, thereby achieving low contact resistance and high wear resistance. Furthermore, by only setting the plating layer in the contact areas, overall costs can be reduced while ensuring contact performance. Plating precious metal only in critical contact areas reduces precious metal waste and improves product competitiveness.

[0029] In one embodiment, the inner wall of the socket 110 is further provided with a second contact area 112, and the outer wall of the spring 200 is further provided with a fifth contact area 221. The second contact area 112 contacts the fifth contact area 211. The third contact area 211 and the fifth contact area 221 are respectively located near the two ends of the spring 200. The second contact area 112 is coated with the first coating layer, and the fifth contact area 221 is coated with the second coating layer.

[0030] In this embodiment, the second contact area 211 contacts the fifth contact area 211, the positions of the first contact area 111 and the second contact area 112 are adapted to the corresponding third contact area 211 and fifth contact area 221, and the third contact area 211 and the fifth contact area 211 respectively correspond to the two ends close to the reed.

[0031] refer to Figure 3 As shown, specifically, the first contact area 111 and the third contact area 211 make contact, and the second contact area 112 makes contact with the fifth contact area 221. It should be noted that the third contact area 211, the fifth contact area 221, the fourth contact area 230, the first contact area 111, and the second contact area 112 are all annular structures to ensure sufficient contact area. Furthermore, in the axial direction of the socket 110, the extension length of the first contact area 111 is greater than the extension length of the third contact area 211, and / or the extension length of the second contact area 112 is greater than the extension length of the fifth contact area 221. This is to ensure that the third contact area 211 and the first contact area 111 are in contact with each other, and that the fifth contact area 221 and the second contact area 112 are in contact, even when the spring 200 is within a reasonable range of movement, thus ensuring data transmission.

[0032] In one embodiment, the inner wall of the socket 110 is further provided with a transition area 113 and an extension area 114. The transition area 113 is located between the first contact area 111 and the second contact area 112, and the extension area 114 is located on the side of the first contact area 111 away from the transition area 113. The transition area 113 and / or the extension area 114 are coated with a second coating.

[0033] Specifically, the non-contact area between the inner wall of the socket 110 and the spring 200 is the transition area 113 and the extension area 114. To ensure the basic mechanical support and transition function, and to meet the requirements of corrosion resistance and cost, a third plating layer is applied. In one embodiment, for cost control and process optimization, the third plating layer uses a base metal plating layer, such as copper or nickel, which serves as the non-contact area function for wear resistance, anti-plating migration, and inter-plating bonding, avoiding waste of precious metals. In another embodiment, the third plating layer is made of a precious metal, and its thickness is less than that of the first plating layer. In one embodiment, the precious metal is one or more of gold, silver, palladium, and platinum. The precious metal covers only 5%-20% of the critical area to ensure key electrical contact performance. At the same time, because the film thickness in the core area is sufficient, it will improve conductivity and service life, and can meet the requirements of low contact resistance and high wear resistance. This differentiated local electroplating strategy not only ensures the excellent performance of the key contact parts, but also effectively controls the overall manufacturing cost.

[0034] In one embodiment, the reed 200 includes a first connecting ring 210, a second connecting ring 220, and a plurality of connecting pieces 250 connected between the first connecting ring 210 and the second connecting ring 220. A third contact area 211 is disposed on the outer wall of the first connecting ring 210 and arranged along the circumference of the first connecting ring 210. A fifth contact area 221 is disposed on the outer wall of the second connecting ring 220 and arranged along the circumference of the second connecting ring 220. A contraction portion 240 is disposed on the connecting piece 250.

[0035] In the specific implementation process, the spring 200 is an integral structure, and the first connecting ring 210, the second connecting ring 220 and the connecting piece 250 are integrally formed. One end of the connecting piece 250 is connected to the first connecting ring 210 and the other end is connected to the second connecting ring 220. Several connecting pieces 250 are distributed circumferentially along the first connecting ring 210 and the second connecting ring 220, and there is a certain interval between the several connecting pieces 250. The connecting piece 250 is twisted and formed into a contraction part 240.

[0036] In one embodiment, the insertion hole 110 is provided with a through hole 120, which is connected to the insertion hole 110. Specifically, the through hole 120 penetrates the housing 100 radially along the insertion hole 110. The through hole 120 is an electroplating process hole, which is used to allow the electroplating solution to flow in and out during processing, and also to dissipate heat inside the spring 200.

[0037] In one embodiment, the connector further includes a pressure cap 300, and a limiting platform 130 is provided on the inner wall of the socket 110. One end of the spring 200 abuts against the limiting platform 130, and the other end is connected to the pressure cap 300. The pressure cap 300 and the limiting platform 130 cooperate to limit the displacement of the spring 200 in the axial direction of the socket 110.

[0038] Specifically, based on the above, the first connecting ring 210 of the spring 200 abuts against the limiting platform 130, the second connecting ring 220 is connected to the pressure cover 300, the pressure cover 300 has a U-shaped groove, the U-shaped groove is engaged with the second connecting ring 220 and the housing 100 to clamp the spring 200 on the housing 100, and the limiting platform 130 and the pressure cover 300 cooperate to restrict the axial displacement of the spring 200 in the insertion hole 110.

[0039] refer to Figure 2 As shown, further, the outer wall of the housing 100 is provided with a slot 140, and the cover 300 includes a first engaging portion 310 and a second engaging portion 320. The first engaging portion 310 engages with the slot 140, and the second engaging portion 320 abuts against the spring 200, causing the spring 200 to be pressed tightly against the inner wall of the insertion hole 110. Specifically, the first engaging portion 310 and the second engaging portion 320 are arranged opposite to each other, forming an engaging space between them. The first engaging portion 310 is located in the slot 140, and the second engaging portion 320 abuts against the second connecting ring 220, so that the second connecting ring 220 and part of the housing are located in the engaging space. Thus, the first engaging portion 310 and the second engaging portion 320 cooperate to clamp the spring 200 in the insertion hole 110 of the housing 100.

[0040] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the inventive concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A connector, characterized in that, include: The housing has an insertion hole, the inner wall of which has a first contact area, and the first contact area is coated with a first coating layer. as well as A spring is disposed within the socket. The spring has a retractable portion for contacting a pin. The inner diameter of the spring gradually decreases from its end to the retractable portion. The spring has a third contact area and a fourth contact area, both of which are plated with a second plating layer. The first plating layer and the second plating layer are made of precious metals. The third contact area is disposed on the outer wall of the spring, and the first contact area contacts the third contact area. The fourth contact area is disposed on the inner wall of the retractable portion and is used to contact an external pin.

2. The connector as described in claim 1, characterized in that, The inner wall of the socket is further provided with a second contact area, and the outer wall of the spring is further provided with a fifth contact area. The second contact area is in contact with the fifth contact area. The third contact area and the fifth contact area are respectively located near the two ends of the spring. The second contact area is coated with the first coating layer, and the fifth contact area is coated with the second coating layer.

3. The connector as described in claim 2, characterized in that, In the axial direction of the socket, the extension length of the first contact area is greater than the extension length of the third contact area, and / or the extension length of the second contact area is greater than the extension length of the fifth contact area.

4. The connector as described in claim 2, characterized in that, The inner wall of the socket is further provided with a transition area and an extension area. The transition area is located between the first contact area and the second contact area, and the extension area is located on the side of the first contact area away from the transition area. The transition area and / or the extension area are coated with a third coating.

5. The connector as described in claim 4, characterized in that, The material of the third coating layer is configured to be one or more of copper and nickel, or the material of the third coating layer is configured to be a precious metal, and the thickness of the third coating layer is less than that of the first coating layer.

6. The connector as claimed in claim 1, characterized in that, The precious metal is configured as one or more of gold, silver, palladium, and platinum.

7. The connector as claimed in claim 2, characterized in that, The reed includes a first connecting ring, a second connecting ring, and a plurality of connecting pieces connecting the first connecting ring and the second connecting ring. The third contact area is located on the outer wall of the first connecting ring and is arranged along the circumference of the first connecting ring. The fifth contact area is located on the outer wall of the second connecting ring and is arranged along the circumference of the second connecting ring. The contraction portion is located on the connecting piece.

8. The connector as claimed in claim 1, characterized in that, The housing is provided with a through hole, which communicates with the insertion hole.

9. The connector as claimed in claim 1, characterized in that, The connector also includes a pressure cap, and the inner wall of the socket is provided with a limiting platform. One end of the spring abuts against the limiting platform, and the other end is connected to the pressure cap. The pressure cap cooperates with the limiting platform to limit the displacement of the spring in the axial direction of the socket.

10. The connector as claimed in claim 9, characterized in that, The outer wall of the housing is provided with a slot, and the cover includes a first snap-fit ​​part and a second snap-fit ​​part. The first snap-fit ​​part snaps into the slot, and the second snap-fit ​​part abuts against the spring and presses the spring against the inner wall of the socket.

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