A VGA male-to-female double-layer connector

Abstract

The utility model relates to a kind of VGA male-to-female double-layer connector in the connector technical field, including male seat plastic main body and female seat plastic main body, the surface of female seat hardware terminal is equipped with funnel-shaped shrink node;By additionally providing shrink node on the surface of female seat hardware terminal, female seat hardware terminal is forced to produce elastic deformation, to exert a radial, sustained clamping force on male seat terminal, this pressure significantly increases the contact area and contact pressure between two metal surfaces, is the key to reduce contact resistance, to prevent signal contact bad effect;On the other hand, using the structure can improve signal integrity, reduce distortion and noise, provide good transmission channel for high-frequency analog signal, reduce signal reflection and echo loss, funnel-shaped design reduces impedance mutation, directly reduces the reflection of signal in contact point, more signal energy can be transmitted to receiving end completely, improve echo loss performance.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a VGA male-to-female double-layer connector. Background Technology

[0002] A VGA male-to-female dual-layer connector is an electronic connector specifically designed for transmitting analog video signals. Each part of its name describes its key characteristics. It is a common video interface on devices such as computers, monitors, and projectors.

[0003] Existing dual-layer connectors mostly use smooth inner holes or rely solely on the overall elastic deformation of the terminals to contact the male connector terminals, or use simple annular bumps / rings, but their geometry and mechanical properties are not optimized. The problems caused by this structure are insufficient contact pressure: it is impossible to apply sufficient radial clamping force to the male connector terminals, resulting in a small actual contact area between the metal contact surfaces, and high and fluctuating contact resistance: high contact resistance can easily cause image flickering, snow, dull colors or brightness attenuation, and is easily affected by the environment. When there is slight vibration, temperature change or equipment movement, the contact point is prone to slight displacement, causing unstable contact or even instantaneous disconnection, which seriously affects signal continuity. To this end, the inventors have proposed a VGA male-to-female dual-layer connector to solve the above-mentioned technical problems of insufficient contact pressure and impact on signal continuity by improving the terminal structure. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the aforementioned problems.

[0005] A VGA male-to-female dual-layer connector includes a male plastic body and a female plastic body. The male and female plastic bodies are mounted via a plastic connector. The male plastic body is connected to a male metal housing, male metal terminals, and a male plastic back cover. The male metal housing and the male plastic back cover are located at the front and rear ends of the male plastic body, respectively, and are detachable from the male plastic body. The male metal terminals are linearly arranged inside the male plastic body in a vertical arrangement. One end of the male metal terminal is a cylindrical portion, and the other end is a bent portion with a U-shaped groove on its surface. The female plastic body is connected to a female metal housing, female metal terminals, and a female plastic back cover. The surface of the female metal terminals has a funnel-shaped contraction node. By adding contraction nodes to the surface of the female connector's metal terminals, the female connector's metal terminals are forced to undergo elastic deformation, thereby applying a radial and continuous clamping force to the male connector terminals. This pressure significantly increases the contact area and contact pressure between the two metal surfaces, which is key to reducing contact resistance and preventing poor signal contact. VGA transmits analog RGB video signals, which are extremely sensitive to changes in contact resistance. Even minor contact defects can cause image flickering, snow, color distortion, or even signal interruption. The stable pressure provided by the contraction nodes effectively eliminates contact instability caused by oxidation, dust, or minor displacement, ensuring the continuity and clarity of signal transmission. The connector's insertion and extraction force is similar to a "spring-loaded bayonet" or "interference fit," allowing the connector to automatically lock in place after insertion without the need for additional screws. Furthermore, the shrinking node is designed in a funnel shape—a cone or horn-shaped structure with a larger opening at one end that gradually narrows inwards. This structure effectively achieves a smooth and continuous current transition, avoiding the "bottleneck effect." In traditional ring nodes (sharp edges or right-angle shrinkage), the current concentrates in the narrow ring contact band due to the sudden narrowing of the path, causing a sharp increase in local current density. The funnel-shaped, gradually tapering cone guides the current smoothly and evenly to the clamping area, avoiding current "congestion" and resulting in a more uniform current distribution. A uniform current distribution means a larger actual area of ​​metal involved in conduction, effectively reducing the overall contact resistance. For analog video signals (red, green, and blue primary color signals) transmitted via VGA, low and stable contact resistance is fundamental to preventing color distortion and brightness degradation. A sudden geometric contraction (such as a ring node) can create an impedance abrupt change, causing signal reflection and resulting in ringing or overshoot. The funnel-shaped gradient structure acts as an impedance matching transition section, smoothly connecting conductors of different diameters, significantly reducing impedance abrupt changes, thereby suppressing signal reflection and ensuring the integrity of the signal waveform. This structure can improve signal integrity, reduce distortion and noise, provide a good transmission channel for high-frequency analog signals, and reduce signal reflection and return loss. The funnel-shaped design reduces impedance abrupt changes, directly reducing signal reflection at the contact point, allowing more signal energy to be transmitted completely to the receiver, thus improving return loss performance. On the other hand, current congestion and signal reflection can generate high-frequency harmonics and electromagnetic radiation. Smooth current distribution and stable signal transmission reduce these unnecessary electromagnetic noises, which not only improves the signal quality itself, but also reduces interference to surrounding circuits, improves the signal rise / fall edge, helps maintain the steepness of the signal edge, ensures accurate timing synchronization, and avoids blurring, ghosting or misalignment of the image. In the double-layer terminal arrangement used in this structure, the symmetry and consistency of the signal path can be ensured.

[0006] Furthermore, one end of the female connector hardware terminal is an inclined end, and the other end of the female connector hardware terminal is bent. The surface of the female connector hardware terminal is provided with a conductor sheet to help increase the conduction signal, and one end of the surface of the conductor sheet is raised. The purpose of the protrusions on the surface of the conductor sheet is to enhance the signal conduction area, optimize current distribution, improve connection reliability, and form multiple contact points to increase the effective contact area. When the female connector hardware terminals are installed or in contact, the protrusions on the surface of the conductor sheet will preferentially contact the surface of the connected device. The protrusions form a high-pressure contact point, which can pierce the oxide layer even in the case of slight oxidation or contamination, and establish direct metal-to-metal conduction. The conductor sheet itself is an additional conductor, connected in parallel with the main body of the female connector hardware terminal. The contact points formed by the protrusions and the contraction nodes of the main body of the female connector hardware terminal form multiple parallel current paths. This structure reduces the overall conduction resistance and provides electrical redundancy. Even if the resistance of the main contact point increases due to aging or contamination, the path provided by the protrusions can still ensure signal conduction. On the other hand, the raised structure increases the effective length and complexity of the conductor surface, providing more and shorter surface paths for high-frequency currents, which helps to reduce high-frequency impedance and improve signal transmission efficiency. The raised structure will wear out preferentially during repeated insertion and removal, thereby protecting the contact surface of the tilted end and extending the overall service life.

[0007] Furthermore, the surface of the male seat plastic body is connected to a male seat hardware bracket, which is installed at both ends of the male seat plastic body. The male seat hardware bracket is L-shaped, and the surface of the male seat hardware bracket is provided with a connecting seat, and the surface of the connecting seat is provided with a clamping plate. The male seat hardware bracket enhances the overall structural rigidity and acts as a mounting base. The connecting seat is an extension structure on the bracket, providing a mounting base and support for the subsequent clamping plate. When the clamping plate is used for connection, its harpoon-shaped setting increases the connection stability.

[0008] Furthermore, the shrinking nodes are staggered on the surface of the female connector hardware terminals; the staggered arrangement allows the shrinking nodes to be located at different positions on the female connector hardware terminals, forming multiple independent contact areas. The staggered arrangement provides electrical redundancy, so even if a node fails for some reason, the nodes at other positions can still maintain conduction, greatly improving the fault tolerance and long-term reliability of the connection. Through the combined action of multiple dispersed contact points, the total metal-to-metal contact area is effectively increased, further reducing the overall contact resistance.

[0009] Furthermore, one end of the female plastic back cover is stepped, the bottom of the female plastic back cover is flat, the bottom of the female plastic back cover is in contact with the surface of the plastic connector, one end of the female hardware terminal extends into the interior of the female plastic back cover, and one end of the male hardware terminal passes through the surfaces of the female plastic back cover and the plastic connector in sequence. The stepped surface provides a larger contact area, which significantly enhances the connection strength between the back cover and the main body compared to the straight cylindrical design, preventing it from being pulled off under stress. When the connector is subjected to external pressure or equipment installation force, the flat surface can distribute the force evenly on the connector, preventing stress concentration at a certain point from causing the plastic to crack. The male connector's metal terminal passes through the surface of the female connector's plastic back cover and the plastic connector in sequence, realizing the direct docking of the male and female terminals and completing the electrical connection process. At the same time, this connection increases the connection stability of the female connector's plastic back cover and the plastic connector, acting as a fixing component.

[0010] Furthermore, one end of the male connector's metal terminal extends beyond the surface of the female connector's plastic back cover and is arranged in a linear configuration with opposite orientations. This structure shortens the signal transmission path, reduces parasitic parameters, and improves upon traditional design issues. When the terminal is a straight through-type connector, a long trace is often required to connect to the subsequent circuitry, increasing parasitic inductance (L) and capacitance (C). This structure, however, uses a reverse orientation, allowing the terminal to be inserted from the front end → mating with the female connector terminal in the connector / back cover area → then folding back, with its tail extending from the same rear end and soldered in the opposite direction. This folding-back design shortens the distance from the mating point to the soldering point, reducing parasitic inductance and capacitance. For high-frequency analog signals in the VGA RGB channel, this effectively reduces signal delay, reflection, and distortion, improving image clarity.

[0011] Furthermore, both the male and female plastic bodies are connected to the male hardware bracket via connecting screws. The male and female plastic bodies and the male hardware bracket are detachable from each other. In actual use, situations such as plastic body cracking, terminal damage, or bracket deformation may occur. The detachable design allows technicians to replace only the faulty module without scrapping the entire connector, significantly reducing maintenance costs. Users or manufacturers can replace the plastic body with different colors, materials, or those with shielding coatings, or upgrade to a higher-strength metal bracket as needed, improving product adaptability.

[0012] Compared with the prior art, the beneficial effects of this utility model are: by adding a shrinkage node to the surface of the female hardware terminal, the female hardware terminal is forced to produce elastic deformation, thereby applying a radial and continuous clamping force to the male terminal. This pressure significantly increases the contact area and contact pressure between the two metal surfaces, which is the key to reducing contact resistance, thus preventing poor signal contact and solving the problem of insufficient contact pressure. In addition, VGA transmits analog RGB video signals, which are extremely sensitive to changes in contact resistance. The stable pressure provided by the shrinking node can effectively eliminate contact instability caused by oxidation, dust or slight displacement, ensuring the continuity and clarity of signal transmission. The shrinking node is designed in a funnel shape to avoid the "bottleneck effect". On the other hand, it makes the current distribution more uniform, effectively reduces the overall contact resistance, prevents color distortion and brightness attenuation. This structure can improve signal integrity, reduce distortion and noise, provide a good transmission channel for high-frequency analog signals, reduce signal reflection and return loss, and the funnel-shaped design reduces impedance abrupt changes, directly reducing signal reflection at the contact point, allowing more signal energy to be transmitted completely to the receiving end, improving return loss performance and solving the problem of affecting signal continuity. Attached Figure Description

[0013] Figure 1 This is a 3D diagram of a VGA male-to-female dual-layer connector; Figure 2 This is an exploded view of the plastic body of the male connector in a VGA male-to-female dual-layer connector; Figure 3 This is an exploded view of the female plastic body in a VGA male-to-female dual-layer connector; Figure 4 This is a perspective view of the male connector hardware terminal in a VGA male-to-female double-layer connector; Figure 5 This is a 3D view of the female connector hardware terminals in a VGA male-to-female dual-layer connector; Figure 6 This is an axial view of a VGA male-to-female dual-layer connector; Figure 7 This is another axial view of a VGA male-to-female dual-layer connector; Figure 8 yes Figure 7 A magnified view of part A in the diagram; Figure 9 This is a rear view of a VGA male-to-female dual-layer connector; Figure 10 This is a partial structural diagram of a VGA male-to-female dual-layer connector; In the diagram: Male connector plastic body-1, Female connector plastic body-2, Male connector metal shell-3, Male connector metal terminal-4, Male connector plastic back cover-5, Female connector metal shell-6, Female connector metal terminal-7, Female connector plastic back cover-8, Cylindrical part-9, Bending part-10, U-shaped channel-11, Plastic connector-12, Inclined end-13, Conductor sheet-14, Male connector metal bracket-15, Connector-16, Clamping plate-17, Shrinkage node-18, Connecting screw-19. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] For this embodiment, please refer to Figures 1-10The present invention relates to a VGA male-to-female dual-layer connector, comprising a male plastic body 1 and a female plastic body 2. The male plastic body 1 and the female plastic body 2 are mounted via a plastic connector 12. The male plastic body 1 is connected to a male metal housing 3, a male metal terminal 4, and a male plastic back cover 5. The male metal housing 3 and the male plastic back cover 5 are located at the front and rear ends of the male plastic body 1, respectively, and are both detachable from the male plastic body 1. The male metal terminals 4 are linearly arranged inside the male plastic body 1 in a vertical arrangement. One end of the male metal terminal 4 is a cylindrical portion 9, and the other end is a bent portion 10. The surface of the bent portion 10 has a U-shaped groove 11. The female plastic body 2 is connected to a female metal housing 6, a female metal terminal 7, and a female plastic back cover 8. The surface of the female metal terminal 7 has a funnel-shaped shrinkage node 18. By adding a contraction node 18 to the surface of the female connector's metal terminal 7, the female connector's metal terminal 7 is forced to undergo elastic deformation, thereby applying a radial and continuous clamping force to the male connector terminal. This pressure significantly increases the contact area and contact pressure between the two metal surfaces, which is key to reducing contact resistance and preventing poor signal contact. VGA transmits analog RGB video signals, which are extremely sensitive to changes in contact resistance. Even minor contact defects can cause image flickering, snow, color distortion, or even signal interruption. The stable pressure provided by the contraction node 18 can effectively eliminate contact instability caused by oxidation, dust, or minor displacement, ensuring the continuity and clarity of signal transmission. The connector's insertion and extraction force is similar to a "spring-loaded bayonet" or "interference fit," allowing the connector to automatically lock in place without the need for additional screws. Furthermore, the shrinking node 18 is designed in a funnel shape, a tapered or horn-shaped structure with a larger opening at one end that gradually narrows inwards. This structure effectively achieves a smooth and continuous current transition, avoiding the "bottleneck effect." In traditional annular nodes (sharp edges or right-angle shrinkage), the current concentrates in the narrow annular contact band due to the sudden narrowing of the path, causing a sharp increase in local current density. The funnel-shaped, gradually tapering cone guides the current to smoothly and evenly transition to the clamping area, avoiding current "congestion" and resulting in a more uniform current distribution. A uniform current distribution means a larger actual area of ​​metal involved in conduction, effectively reducing the overall contact resistance. For analog video signals (red, green, and blue primary color signals) transmitted via VGA, low and stable contact resistance is fundamental to preventing color distortion and brightness degradation. A sudden geometric contraction (such as a ring node) can create an impedance abrupt change, causing signal reflection and resulting in ringing or overshoot. The funnel-shaped gradient structure acts as an impedance matching transition section, smoothly connecting conductors of different diameters, significantly reducing impedance abrupt changes, thereby suppressing signal reflection and ensuring the integrity of the signal waveform. This structure can improve signal integrity, reduce distortion and noise, provide a good transmission channel for high-frequency analog signals, and reduce signal reflection and return loss. The funnel-shaped design reduces impedance abrupt changes, directly reducing signal reflection at the contact point, allowing more signal energy to be transmitted completely to the receiver, thus improving return loss performance. On the other hand, current congestion and signal reflection can generate high-frequency harmonics and electromagnetic radiation. Smooth current distribution and stable signal transmission reduce these unnecessary electromagnetic noises, which not only improves the signal quality itself, but also reduces interference to surrounding circuits, improves the signal rise / fall edge, helps maintain the steepness of the signal edge, ensures accurate timing synchronization, and avoids blurring, ghosting or misalignment of the image. In the double-layer terminal arrangement used in this structure, the symmetry and consistency of the signal path can be ensured.

[0016] One end of the female connector hardware terminal 7 is an inclined end 13, and the other end of the female connector hardware terminal 7 is bent. The surface of the female connector hardware terminal 7 is provided with a conductor piece 14 to assist in increasing the conduction signal. One end of the surface of the conductor piece 14 is protruding. Figure 5 As shown; The purpose of the protrusions on the surface of the conductor piece 14 is to enhance the signal conduction area, optimize the current distribution, improve the connection reliability, and form multiple contact points to increase the effective contact area. When the female hardware terminal 7 is installed or in contact, the protrusions on the surface of the conductor piece 14 will preferentially contact the surface of the connected device. The protrusions form a high-pressure contact point, which can pierce the oxide layer even in the case of slight oxidation or contamination, and establish direct metal-to-metal conduction. The conductor piece 14 itself is an additional conductor, connected in parallel with the main body of the female hardware terminal 7. The contact points formed by the protrusions and the contraction nodes 18 of the main body of the female hardware terminal 7 form multiple parallel current paths. This structure reduces the overall conduction resistance and provides electrical redundancy. Even if the resistance of the main contact point increases due to aging or contamination, the path provided by the protrusions can still ensure signal conduction. On the other hand, the raised structure increases the effective length and complexity of the conductor surface, providing more and shorter surface paths for high-frequency current, which helps to reduce high-frequency impedance and improve signal transmission efficiency. The raised structure will wear out preferentially during repeated insertion and removal, thereby protecting the contact surface of the inclined end 13 and extending the overall service life.

[0017] The surface of the male seat plastic body 1 is connected to a male seat hardware bracket 15. The male seat hardware bracket 15 is installed at both ends of the male seat plastic body 1. The male seat hardware bracket 15 is L-shaped. The surface of the male seat hardware bracket 15 is provided with a connecting seat 16. The surface of the connecting seat 16 is provided with a clamping plate 17. The male seat hardware bracket 15 enhances the overall structural rigidity and acts as a mounting base. The connecting seat 16 is an extension structure on the bracket 15, providing a mounting base and support for the subsequent clamping plate 17. When the clamping plate 17 is used for connection, its harpoon-shaped setting increases the connection stability.

[0018] The shrinkage nodes 18 are staggered on the surface of the female connector hardware terminal 7; the staggered arrangement allows the shrinkage nodes 18 to be located at different positions on the female connector hardware terminal 7, such as... Figure 7 , 8 As shown in Figure 9, this structure forms multiple independent contact areas, which are staggered to provide electrical redundancy. Even if a node fails for some reason, the nodes in other locations can still maintain conduction, which greatly improves the fault tolerance and long-term reliability of the connection. Through the combined action of multiple dispersed contact points, the total metal-to-metal contact area is effectively increased, further reducing the overall contact resistance.

[0019] One end of the female plastic back cover 8 is stepped, the bottom of the female plastic back cover 8 is flat, the bottom of the female plastic back cover 8 is in contact with the surface of the plastic connector 12, one end of the female hardware terminal 7 extends into the interior of the female plastic back cover 8, and one end of the male hardware terminal 4 passes through the surfaces of the female plastic back cover 8 and the plastic connector 12 in sequence. The stepped surface provides a larger contact area, which significantly enhances the connection strength between the back cover and the body compared to the straight cylindrical design, preventing it from being pulled off under force. When the connector is subjected to external pressure or equipment installation force, the flat contact can evenly distribute the force to the connector 12, preventing stress concentration at a certain point from causing the plastic to crack. The male connector hardware terminal 4 passes through the surface of the female connector plastic back cover 8 and the plastic connector 12 in sequence, realizing the direct docking of the male and female terminals and completing the electrical connection process. At the same time, this connection increases the connection stability of the female connector plastic back cover 8 and the plastic connector 12, and acts as a fixing component.

[0020] One end of the male connector hardware terminal 4 extends beyond the surface of the female connector plastic back cover 8, and is arranged in a linear pattern with opposite orientations, such as... Figure 10As shown, this structure can shorten the signal transmission path, reduce parasitic parameters, and improve traditional design problems. When the terminals are straight through, long traces are often required to connect to the back-end circuits, increasing parasitic inductance (L) and parasitic capacitance (C). This structure adopts a reverse installation method, so that the terminal is inserted from the front end → docks with the female terminal in the connector / back cover area → then folds back, and its tail is led out from the same side rear end and soldered in the opposite direction. This folding design shortens the distance of the signal from the docking point to the soldering point, reduces parasitic inductance and capacitance, and can effectively reduce signal delay, reflection and distortion for high-frequency analog signals of VGA RGB channels, improving image clarity.

[0021] Both the male connector plastic body 1 and the female connector plastic body 2 are connected to the male connector hardware bracket 15 via connecting screws 19. The male connector plastic body 1, the female connector plastic body 2, and the male connector hardware bracket 15 are detachable from each other. In actual use, the plastic body may crack, the terminals may be damaged, or the bracket may be deformed. The detachable design allows technicians to replace only the faulty module without scrapping the entire connector, greatly reducing maintenance costs. Users or manufacturers can replace the plastic body with different colors, materials, or with shielding coatings, or upgrade to a higher strength metal bracket as needed, improving product adaptability.

[0022] The key design feature of this utility model is that by adding a shrinkage node 18 to the surface of the female hardware terminal 7, the female hardware terminal 7 is forced to undergo elastic deformation, thereby applying a radial and continuous clamping force to the male terminal. This pressure significantly increases the contact area and contact pressure between the two metal surfaces, which is the key to reducing contact resistance and preventing poor signal contact. In addition, VGA transmits analog RGB video signals, which are extremely sensitive to changes in contact resistance. The stable pressure provided by the contraction node 18 can effectively eliminate contact instability caused by oxidation, dust or slight displacement, ensuring the continuity and clarity of signal transmission. The contraction node 18 is designed in a funnel shape to avoid the "bottleneck effect". On the other hand, it makes the current distribution more uniform, effectively reduces the overall contact resistance, prevents color distortion and brightness decay. The structure can improve signal integrity, reduce distortion and noise, provide a good transmission channel for high-frequency analog signals, reduce signal reflection and return loss, and the funnel-shaped design reduces impedance change, directly reduces signal reflection at the contact point, and allows more signal energy to be transmitted completely to the receiving end, thus improving return loss performance.

[0023] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A VGA male-to-female double-layer connector, comprising a male plastic body and a female plastic body, characterized in that: The male and female plastic seats are connected by plastic connectors. The male plastic seat body is connected to a male metal outer shell, a male metal terminal, and a male plastic rear cover. The male metal outer shell and the male plastic rear cover are located at the front and rear ends of the male plastic seat body, respectively, and are detachable from the male plastic seat body. The male metal terminals are linearly arranged inside the male plastic seat body in a vertical arrangement. One end of the male metal terminal is a cylindrical part, and the other end is a bent part with a U-shaped groove on its surface. The female plastic seat body is connected to a female metal outer shell, a female metal terminal, and a female plastic rear cover. The surface of the female metal terminal has a funnel-shaped contraction node.

2. A VGA male-to-female dual-layer connector according to claim 1, characterized in that: One end of the female connector hardware terminal is an inclined end, and the other end of the female connector hardware terminal is bent. The surface of the female connector hardware terminal is provided with a conductor sheet to help increase the conduction signal, and one end of the surface of the conductor sheet is raised.

3. A VGA male-to-female dual-layer connector according to claim 1, characterized in that: The surface of the plastic body of the male seat is connected to a male seat hardware bracket, which is installed at both ends of the plastic body of the male seat. The male seat hardware bracket is L-shaped, and the surface of the male seat hardware bracket is provided with a connecting seat, and the surface of the connecting seat is provided with a clamping plate.

4. A VGA male-to-female double-layer connector according to any one of claims 1-3, characterized in that: The shrinkage nodes are arranged alternately on the surface of the female hardware terminal.

5. A VGA male-to-female double-layer connector according to any one of claims 1-3, characterized in that: One end of the female plastic back cover is stepped, and the bottom of the female plastic back cover is flat. The bottom of the female plastic back cover is attached to the surface of the plastic connector. One end of the female hardware terminal extends into the interior of the female plastic back cover, and one end of the male hardware terminal passes through the surfaces of the female plastic back cover and the plastic connector in sequence.

6. A VGA male-to-female dual-layer connector according to claim 5, characterized in that: One end of the male connector's metal terminal extends beyond the surface of the female connector's plastic back cover and is arranged in a linear configuration with the opposite orientation.

7. A VGA male-to-female dual-layer connector according to claim 3, characterized in that: Both the male and female plastic seats are connected to the male seat hardware bracket via connecting screws, and the male and female plastic seats are detachable from each other.

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