High-stability VGA cable

Abstract

The high-stability VGA cable comprises a transmission line, the transmission line is sequentially wrapped by an aluminum foil wrapping tape, a metal wire braid layer and a sheath from inside to outside, the transmission line is mainly composed of a three-primary-color signal line, a component ground line, a common ground line, a shielding ground line and a synchronous signal line, the three-primary-color signal line and the component ground line are paired into groups, each group is wrapped by a hot melting mylar, and the synchronous signal line is wrapped by a metal wire braid layer. The shielding ground wire is located between the aluminum foil wrapping tape and the metal wire braid layer, and the hot melting mylar is fixedly adhered to the inner wall of the aluminum foil wrapping tape. Compared with the prior art, mutual short circuit between component ground wires can be effectively prevented, and signal transmission has high stability.

Description

Technical Field

[0001] This utility model pertains to data cables, specifically high-stability VGA cables. Background Technology

[0002] VGA cables, or Video Graphics Array cables, are used to transmit analog video signals. They are typically multi-core cables, including 3 primary color signal lines, 3 component ground lines, 2 sync signal lines, 1 common ground line, 1 shielded ground line, and 5 reserved wires. They are wrapped with a shielding layer and a sheath, and are equipped with VGA connectors at both ends, usually 15-pin D-type plugs. They are widely used for data links between devices such as computers, monitors, DVD players, televisions, game consoles, and projectors.

[0003] During use, VGA cables are prone to short circuits due to physical damage, environmental factors, and manufacturing defects. This can lead to problems such as color shift, changes in color saturation, image striping, decreased device performance, and shortened lifespan, affecting the normal use of the VGA cable. Existing VGA cables do not incorporate corresponding protective measures in their design. For example, while patent document CN201477921U describes a low-voltage computer cable that places a ground wire between the aluminum foil Mylar tape and the braided layer, improving signal transmission stability, it does not disclose measures to prevent short circuits in the component ground wire. Utility Model Content

[0004] The purpose of this invention is to overcome the risk of component ground short circuits in existing VGA cables and to provide a VGA cable that can effectively prevent component ground short circuits and has high signal transmission stability.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a high-stability VGA cable, including a transmission line, which is wrapped with aluminum foil tape, a metal wire braided layer and a sheath from the inside to the outside. The transmission line is mainly composed of three primary color signal lines, component ground lines, common ground lines, shielded ground lines and synchronization signal lines. The three primary color signal lines and component ground lines are paired into groups, and each group is covered by hot melt Mylar. The shielded ground line is located between the aluminum foil tape and the metal wire braided layer, and the hot melt Mylar is adhered to the inner wall of the aluminum foil tape.

[0006] Optionally, each of the transmission lines consists of a conductor and an insulating layer, wherein the conductor is stranded copper wire and the insulating layer is laminated on it.

[0007] Optionally, the sheath is made of polyurethane.

[0008] Optionally, the hot melt Mylar is polyester hot melt Mylar.

[0009] The principle of this invention is as follows: First, by using hot-melt Mylar to further construct an insulating layer between the component ground wires, when the insulation layer of the component ground wire is damaged by external factors, the hot-melt Mylar can effectively prevent the component ground wire from short-circuiting, ensuring the stability of signal transmission. In addition, by heating the hot-melt Mylar to make it adhere to the inner wall of the aluminum foil wrapping tape, the inside of the cable can be tightly fixed together, improving the overall performance of the cable and ensuring the stability of signal transmission. Second, by adopting a double-layer shielding structure of metal wire braiding layer and aluminum foil wrapping tape, and placing the shielded ground wire between the metal wire braiding layer and aluminum foil wrapping tape, the overall anti-interference capability of the cable is enhanced, ensuring the stability of signal transmission.

[0010] Compared with the prior art, the present invention has at least the following beneficial effects: the present invention can effectively prevent short circuits between component ground lines, thus making signal transmission more stable. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the cross-sectional structure of the present invention;

[0012] The components in the attached diagram are labeled as follows: 1. Aluminum foil wrapping tape; 2. Metal wire braided layer; 3. Sheath; 4. Three primary color signal lines; 5. Component ground line; 6. Common ground line; 7. Shielded ground line; 8. Synchronization signal line; 9. Hot melt Mylar. Detailed Implementation

[0013] Example 1, in conjunction with the following Figure 1 To further illustrate this utility model, a high-stability VGA cable includes a transmission line. Each transmission line consists of a conductor and an insulation layer. The conductor is stranded copper wire, and the insulation layer is laminated on top of it. From the inside out, the transmission line is wrapped with an aluminum foil wrapping tape 1, a metal wire braided layer 2, and a sheath 3. The sheath is made of polyurethane. The transmission line mainly consists of three primary color signal lines 4, component ground lines 5, common ground lines 6, shielded ground lines 7, and synchronization signal lines 8. It also includes reserved lines, totaling 15 lines. The three primary color signal lines and component ground lines are paired into groups, and each group is wrapped with thermoplastic Mylar 9. The thermoplastic Mylar is polyester thermoplastic Mylar. The shielded ground line is located between the aluminum foil wrapping tape and the metal wire braided layer. The thermoplastic Mylar is heated to a certain temperature, so that the thermoplastic Mylar adheres to the inner wall of the aluminum foil wrapping tape and the internal lines are tightly bonded together.

[0014] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-stability VGA cable, comprising a transmission line, the transmission line being wrapped from inside to outside with an aluminum foil tape (1), a metal wire braid layer (2) and a sheath (3) in sequence, the transmission line being mainly composed of three primary color signal lines (4), a component ground wire (5), a common ground wire (6), a shield ground wire (7) and a synchronization signal line (8), characterized in that: The three primary color signal lines and the component ground wire are paired into groups, each group is covered by a hot-melt mull (9), the ground wire is located between the aluminum foil tape and the metal wire braid layer, and the hot-melt mull is fixed to the inner wall of the aluminum foil tape.

2. The high stable VGA cable of claim 1, wherein: Each of the transmission lines is composed of a conductor and an insulation layer, the conductor is a twisted copper wire, and the insulation layer is coated on the conductor.

3. The high stable VGA cable of claim 1, wherein: The sheath is made of polyurethane.

4. The high stable VGA cable of claim 1, wherein: The hot-melt mull is a polyester hot-melt mull.

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