An arc POGO PIN female connector

Abstract

This invention provides an arc-shaped POGO PIN female connector, comprising: a stainless steel back shell; a plastic front cover and a plastic top cover respectively disposed at the lower and upper ends of the front side of the stainless steel back shell; three upper pull terminals equally spaced on the plastic top cover; and three lower pull terminals equally spaced on the plastic front cover; the upper and lower pull terminals are integrally injection molded into a plastic body; the surface of the upper pull terminals is sequentially plated with a nickel base layer, a palladium-nickel alloy layer, and a gold layer; the contact area surface of the lower pull terminals is sequentially plated with a nickel base layer, a gold layer, a platinum alloy layer, a palladium-nickel alloy layer, and a platinum alloy layer, forming an electrolytic corrosion resistant plating layer; cantilever arms extend from the ends of the upper pull terminals, and flat sections are riveted together at the ends of the three cantilever arms; the front side of the plastic front cover is an arc-shaped surface. This arc-shaped POGO PIN female connector achieves rapid mating and highly reliable power and signal transmission.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more specifically, to an arc-shaped POGO PIN female connector. Background Technology

[0002] POGO PIN connectors are widely used in electronic products such as mobile phone peripherals, digital cameras, tablets, smart devices, and vehicle terminals due to their advantages such as flexible contact, long lifespan, and easy quick insertion and removal, serving as power transmission and signal connection functions.

[0003] In existing products, the terminals are machined by turning. Loose pin terminals cannot be electroplated with electrolytic plating, and the thickness of the electroplated film in the contact area cannot be guaranteed to be stable. Furthermore, barrel plating is prone to causing scratches on the appearance.

[0004] To meet market demand, there is an urgent need to develop a connector that can be quickly mated, solving the problems of POGOPIN products on the market being unable to undergo electrolytic plating and having poor appearance due to barrel plating. Summary of the Invention

[0005] The present invention aims to solve the technical problems mentioned in the background art and provide an arc-shaped POGO PIN female connector.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an arc-shaped POGO PIN female connector, comprising: a stainless steel back shell, wherein a plastic front cover and a plastic top cover are respectively provided at the lower and upper ends of the front side of the stainless steel back shell, the plastic top cover is provided with three upper pull terminals at equal intervals, the plastic front cover is provided with three lower pull terminals at equal intervals, and the upper pull terminals and the lower pull terminals are integrally injection molded to form a plastic body;

[0007] The surface of the upper pull terminal is sequentially plated with a nickel base layer, a palladium-nickel alloy layer and a gold layer, and the surface of the contact area of ​​the lower pull terminal is sequentially plated with a nickel base layer, a gold layer, a platinum alloy layer, a palladium-nickel alloy layer and a platinum alloy layer, forming an anti-electrolytic corrosion coating.

[0008] The upper tension terminal has a cantilever extending from its end, and three cantilever ends are riveted together with a flat plate.

[0009] The front side of the plastic front cover is an arc surface.

[0010] Furthermore, the stainless steel back shell is an integrally formed structure that is powder metallurgy injection molded and then CNC machined twice. The stainless steel back shell includes an upper back shell and a lower back shell arranged vertically.

[0011] Furthermore, the plastic front cover is arranged vertically, and the plastic top cover is arranged horizontally, with the angle between the two horizontal planes being 90°.

[0012] Furthermore, both the upper and lower stretching terminals are formed by stamping and stretching, and the stretching height of both is 6 times the material thickness.

[0013] Furthermore, the lower end of the plastic front cover is provided with three through-holes at equal intervals, and the front top of the plastic upper cover is also provided with three through-holes at equal intervals. The positioning holes on the plastic front cover and the plastic upper cover are respectively positioned and engaged with the lower pull terminal and the upper pull terminal. The cantilever located in the middle is set at the rear end between the left and right cantilever arms.

[0014] Furthermore, the plastic front cover, plastic top cover, and plastic body are welded and fixed using an ultrasonic welding assembly process.

[0015] Furthermore, the plating thickness of the upper stretching terminal satisfies the following requirements: the nickel underlayer thickness is 2.0~7.6μm, the palladium-nickel alloy layer thickness is ≥0.76μm, and the gold layer thickness is ≥0.076μm.

[0016] Furthermore, the plating thickness of the lower pull-out terminal meets the following requirements: the nickel underlayer thickness is 2.0~7.6μm of the plastic body, the gold layer thickness is ≥0.076μm, the inner platinum alloy layer thickness is ≥0.125μm, the palladium-nickel alloy layer thickness is ≥0.5μm, and the outer platinum alloy layer thickness is ≥0.5μm.

[0017] The beneficial effects of this invention are as follows: The arc-shaped POGO PIN female connector of this invention uses terminals formed by continuous stamping and stretching, with a stretching height reaching 6 times the material thickness. Combined with the flattening structure on both sides of the terminals, this ensures the terminals are stably encapsulated by plastic during injection molding, significantly improving the stability of the terminal position and guaranteeing interoperability with the male connector. Simultaneously, the stamping method supports continuous electroplating processes, avoiding the appearance scratches and uneven film thickness problems caused by machining loose PINs and barrel plating. The upper row of terminals is plated with a palladium-nickel-gold plating layer, while the lower row is plated with an anti-electrolytic corrosion plating layer (nickel / gold / platinum / palladium-nickel / platinum). This layered design satisfies both the conductivity and wear resistance requirements of ordinary contact areas, while also ensuring... The lower row of terminals exhibits excellent corrosion resistance in humid or electrolytic environments, extending product lifespan. The three terminals are riveted together and then injection molded as a single unit, simplifying the assembly process and ensuring more precise and reliable relative positioning of the terminals within the plastic body. The stainless steel back cover, manufactured using powder metallurgy injection molding and CNC technology, can produce integrated back covers with complex shapes and high dimensional accuracy, enhancing the overall structural strength and shielding effect of the connector. Ultrasonic welding is used to assemble the various plastic parts, replacing traditional clips or glue fixation, resulting in high welding strength and excellent sealing. In summary, this invention effectively solves the problems of existing POGO PIN products, such as the inability to perform electrolytic plating, poor appearance of barrel plating, and unstable terminal positioning, achieving rapid interoperability and highly reliable power and signal transmission. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 in the following description are only drawings of some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of the present invention.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the overall structure from the rear view perspective of the present invention.

[0021] Figure 3 This is a schematic diagram of the exploded structure of the present invention.

[0022] Figure 4 This is a schematic diagram of the combined front structure of the plastic front cover and the plastic top cover of the present invention.

[0023] Figure 5 This is a rear view structural diagram of the stainless steel rear shell of the present invention.

[0024] Figure 6 This is a schematic diagram of the overall structure of the upper and lower tension terminals of the present invention.

[0025] Figure 7 This is a schematic diagram showing the state of the terminals being stacked and riveted according to the present invention.

[0026] Figure 8 This is a schematic diagram of the state of the terminals after being stacked and riveted during injection molding according to the present invention.

[0027] Figure 9 This is a side view of the upper and lower stretching terminals of the present invention.

[0028] Figure 10 This is a cross-sectional view of the combined plastic front cover and plastic top cover of the present invention.

[0029] Figure 11 This is a schematic diagram of the arc-shaped plastic front cover structure from a downward viewing angle of the present invention.

[0030] In the picture:

[0031] 1. Stainless steel back cover; 101. Upper back cover; 102. Lower back cover; 2. Plastic front cover; 3. Plastic top cover; 4. Upper pull terminal; 5. Lower pull terminal; 6. Plastic body; 7. Cantilever; 8. Flat plate section. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] like Figures 1 to 11 As shown in the figure, an arc-shaped POGO PIN female connector provided by an embodiment of the present invention includes: a stainless steel back shell 1, a plastic front cover 2 and a plastic upper cover 3 respectively disposed at the lower and upper ends of the front side of the stainless steel back shell 1, three upper pull terminals 4 equidistantly disposed on the plastic upper cover 3, and three lower pull terminals 5 equidistantly disposed on the plastic front cover 2; the terminals are made of titanium copper material and are formed by continuous stamping and stretching, wherein the stretching height of the upper pull terminals 4 and the lower pull terminals 5 is 6 times the material thickness. Flattening structures are also provided on both sides of the terminals (see...). Figure 6 , Figure 9 This ensures that the plastic can stably cover the entire terminal during subsequent injection molding.

[0036] The upper pull terminal 4 and the lower pull terminal 5 are integrally injection molded to form a plastic body 6. Then, the plastic front cover 2 and the plastic upper cover 3 are welded and fixed to the plastic body 6 by ultrasonic welding assembly process. Finally, the stainless steel back cover 1 is fastened to the outside of the plastic upper cover 3 and the plastic front cover 2 to form a complete connector.

[0037] The surface of the upper pull terminal 4 is sequentially plated with a nickel base layer, a palladium-nickel alloy layer, and a gold layer. The contact area surface of the lower pull terminal 5 is sequentially plated with a nickel base layer, a gold layer, a platinum alloy layer, a palladium-nickel alloy layer, and a platinum alloy layer, forming an anti-electrolytic corrosion coating. Due to the use of continuous stamping terminals, the above-mentioned layered electroplating can be completed sequentially on the roll, avoiding scratches and uneven film thickness caused by loose PIN barrel plating. The upper row of terminals is plated with a palladium-nickel-gold plating layer, and the lower row of terminals is plated with an anti-electrolytic corrosion coating (nickel / gold / platinum / palladium-nickel / platinum). The layered design can meet the conductivity and wear resistance requirements of ordinary contact areas, and also enable the lower row of terminals to have excellent corrosion resistance in humid or electrolytic environments, extending the product's service life.

[0038] like Figure 7 As shown, the upper tension terminal 4 has a cantilever 7 extending from its end, and three cantilever 7 are stacked and riveted to the ends of a flat plate 8. After the terminals are stacked and fixed by riveting, a stable conductive path is formed. Then, the whole assembly is placed in an injection mold and integrally injection molded to form a plastic body 6. The plastic body 6 is made of PA material. During injection molding, the plastic flows around the flattened structure on both sides of the terminal, further enhancing the covering force and positional stability.

[0039] like Figure 11 As shown, the front side of the plastic front cover 2 is an arc surface, which is used to match and mount it to equipment with an arc-shaped outer shell.

[0040] In one embodiment, the stainless steel back shell 1 is an integrally formed structure that is powder metallurgy injection molded and then CNC machined. The stainless steel back shell 1 includes an upper back shell 101 and a lower back shell 102 arranged vertically. This process can manufacture metal shells with complex shapes and high strength, and improve the overall deformation resistance of the connector.

[0041] In one embodiment, the plastic front cover 2 is arranged vertically and the plastic top cover 3 is arranged horizontally, with the angle between the two horizontal planes being 90°.

[0042] In one embodiment, both the upper stretch terminal 4 and the lower stretch terminal 5 are formed by stamping and stretching, and the stretching height of both is 6 times the material thickness. Combined with the flattening structure on both sides of the terminal, the terminal can be stably covered by plastic during injection molding, which significantly improves the stability of the terminal position (MD) and ensures the interoperability when mating with the male connector. At the same time, the stamping method can support continuous electroplating process, avoiding the appearance scratches and uneven film thickness caused by machining loose PINs and barrel plating.

[0043] In one embodiment, the lower end of the plastic front cover 2 is provided with three through-holes at equal intervals, and the front top of the plastic upper cover 3 is also provided with three through-holes at equal intervals. The positioning holes on the plastic front cover 2 and the plastic upper cover 3 are respectively positioned and engaged with the lower pull terminal 5 and the upper pull terminal 4 to ensure that the terminal protrusion position is accurate; wherein, the cantilever 7 located in the middle is disposed at the rear end between the left and right cantilever 7.

[0044] In one embodiment, the plastic front cover 2, the plastic top cover 3, and the plastic body 6 are welded together using an ultrasonic welding assembly process, replacing traditional clips or glue fixation, resulting in high welding strength and good sealing performance.

[0045] In one embodiment, the plating thickness of the upper stretching terminal 4 satisfies the following: the nickel underlayer thickness is 2.0~7.6μm, the palladium-nickel alloy layer thickness is ≥0.76μm, and the gold layer thickness is ≥0.076μm.

[0046] In one embodiment, the plating thickness of the lower pull terminal 5 meets the following requirements: the thickness of the nickel underlayer is 2.0~7.6μm of the plastic body, the thickness of the gold layer is ≥0.076μm, the thickness of the inner platinum alloy layer is ≥0.125μm, the thickness of the palladium-nickel alloy layer is ≥0.5μm, and the thickness of the outer platinum alloy layer is ≥0.5μm.

[0047] With the above structure, the connector in this embodiment can achieve: rated voltage 6.5V, rated current 4A; maximum contact resistance 20mΩ; temperature rise ≤30°C; operating temperature range -45℃~85℃; durable mating and unmolding cycles of more than 6000; and at the same time solves the problems of electrolytic plating preparation and poor appearance of barrel plating.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A circular arc POGO PIN female connector, characterized in that, include: A stainless steel back cover (1) is provided with a plastic front cover (2) and a plastic top cover (3) at the lower and upper ends of the front side of the stainless steel back cover (1). The plastic top cover (3) is provided with three upper pull terminals (4) at equal intervals. The plastic front cover (2) is provided with three lower pull terminals (5) at equal intervals. The upper pull terminals (4) and the lower pull terminals (5) are integrally injection molded to form a plastic body (6). The surface of the upper pull terminal (4) is sequentially plated with a nickel base layer, a palladium-nickel alloy layer and a gold layer, and the surface of the contact area of ​​the lower pull terminal (5) is sequentially plated with a nickel base layer, a gold layer, a platinum alloy layer, a palladium-nickel alloy layer and a platinum alloy layer to form an anti-electrolytic corrosion coating. The front side of the plastic front cover (2) is an arc surface.

2. The arc-shaped POGO PIN female connector according to claim 1, characterized in that: The stainless steel back shell (1) is an integrally formed structure formed by powder metallurgy injection molding and CNC secondary processing. The stainless steel back shell (1) includes an upper back shell (101) and a lower back shell (102) arranged vertically.

3. The arc-shaped POGO PIN female connector according to claim 1, characterized in that: The plastic front cover (2) is arranged vertically, and the plastic top cover (3) is arranged horizontally, with an angle of 90° between the two horizontal planes.

4. The arc-shaped POGO PIN female connector according to claim 1, characterized in that: Both the upper stretching terminal (4) and the lower stretching terminal (5) are formed by stamping and stretching, and the stretching height of both is 6 times the material thickness.

5. The arc-shaped POGO PIN female connector according to claim 1, characterized in that: The plastic front cover (2) has three through-holes at equal intervals at the lower end, and the plastic top cover (3) also has three through-holes at equal intervals at the front top. The positioning holes on the plastic front cover (2) and the plastic top cover (3) are respectively positioned and engaged with the lower pull terminal (5) and the upper pull terminal (4).

6. The arc-shaped POGO PIN female connector according to claim 1, characterized in that: The plastic front cover (2), plastic top cover (3), and plastic body (6) are welded and fixed by using an ultrasonic welding assembly process.

7. The arc-shaped POGO PIN female connector according to claim 1, characterized in that: The plating thickness of the upper stretching terminal (4) meets the following requirements: the nickel underlayer thickness is 2.0~7.6μm, the palladium-nickel alloy layer thickness is ≥0.76μm, and the gold layer thickness is ≥0.076μm.

8. The arc-shaped POGO PIN female connector according to claim 1, characterized in that: The plating thickness of the lower pull-out terminal (5) meets the following requirements: the thickness of the nickel bottom layer is 2.0~7.6μm of the plastic body, the thickness of the gold layer is ≥0.076μm, the thickness of the inner platinum alloy layer is ≥0.125μm, the thickness of the palladium-nickel alloy layer is ≥0.5μm, and the thickness of the outer platinum alloy layer is ≥0.5μm.

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