TWM464796U - Cable - Google Patents

Description

Cable

The present invention relates to a cable, and more particularly to a USB cable.

USB is a standard interface for connecting calculator systems to external devices. It is widely used in communication products such as personal computers and mobile devices, and extends to related fields such as photographic equipment, digital TVs, and game consoles. Since the introduction of the 1.0 version of the USB interface, its transmission speed is only 12Mbps. After upgrading to version 2.0, the transmission speed has been increased to 480Mbps. The increase in speed means that users can use more efficient external devices, and peripheral devices with multiple speeds can be used. Connected to the USB 2.0 line.

According to the USB2.0 Association specification, there are 4 transmission lines inside the wire, two of which are a pair, transmitting differential serial signals, and the other two are 5V power cores; because the standard USB cable has a charging function, it is widely used. At present, the end customer favors the small outer diameter wire and requires the wire to be soft; in addition, because the power required by the external terminal device is getting larger (such as various large-screen smart phones and tablets), the required USB power cable is required to pass. The current is large, and the corresponding conductor AWG (American Wire Gauge) has a large number; in the case of satisfying a small outer diameter, the insulation of the power supply core is thin and the safety is low.

In view of this, it is indeed necessary to provide an improved cable to overcome the deficiencies of the prior art.

The purpose of this creation is to provide a cable that is small in diameter and capable of transmitting power and signals.

The cable of the present invention can be realized by the following technical solution: a USB cable comprising a power core wire, a pair of signal core wires, and a metal shielding layer surrounding the core wire and an insulating sheath covering the metal shielding layer, The power core wire is used for transmitting positive electricity, and the power core wire is covered with a Mylar tape.

Compared to the prior art, the cable of this creation has a smaller size, meets customer requirements and is soft, can transmit signals and power, and has high security.

100‧‧‧ cable

1‧‧‧Power core

11‧‧‧Mela belt

2‧‧‧Signal core

3‧‧‧ Grounding wire

4‧‧‧Strength

5‧‧‧Melah layer

6‧‧‧Metal shield

7‧‧‧Insulated outer skin

The first picture is a schematic cross-sectional view of the present cable.

Referring to the first figure, the authoring cable 100 is a USB cable, which includes a power core 1 for transmitting positive power and a pair of signal cores 2 for transmitting differential signals, the power core 1 and the signal core. 2 both extend in the axial direction of the cable 100, and the power supply core 1 and the signal core 2 are arranged in a triangular shape in the radial direction of the cable 100.

The power core 1 is used to transmit a voltage of +5 V, and the power core 1 and the signal core 2 each include a metal inner conductor and a core insulating layer covering the outer conductor. The metal inner conductor may be a material such as copper or aluminum. In the embodiment, the core insulating layer is a FEP (Fluorinated Ethylene Propylene) insulating material. The size of the power core 1 is 25 AWG (American Wire Gauge), the size of the signal core 2 is 31 AWG, and the power core 1 is thicker than the signal core 2. The power core 1 is covered with a Mylar belt 11 to reduce the risk of breaking the wire during processing and use. The Mylar belt 11 is a Heat Seal PET. In other embodiments, the Mylar belt 11 can also be a metal Mylar belt, such as an aluminum foil Mylar belt or the like. That is, the power core wire 1 is covered with a non-metal Mylar tape or a metal Mylar tape, so the core insulation layer of the power core wire 1 can be designed to be thin but there is no risk of breaking the skin, which improves the safety of the power core wire in use. Sex, while the overall size of the cable is reduced.

The cable 100 further includes a plurality of grounding wires 3, a reinforcing member 4, a Mylar layer 5, a metal shielding layer 6 coated on the outside of the Mylar layer 5, and an insulating sheath 7 on the outer layer. In this embodiment, there are three grounding wires 3, and the grounding wire 3 has a specification of 32 AWG, and the grounding wire 3 is arranged between two adjacent core wires (power supply wires and signal core wires) or between two signal core wires 2, They are also arranged in a triangle in the radial direction of the cable 100. The three grounding wires 3 are connected in parallel with the metal shielding layer 6 to be grounded together, so that the thicker grounding wire in the prior art can be omitted, so as to effectively reduce the number of core wires in the cable and reduce the overall size of the cable.

The stiffener 4 is located at the axial center of the cable 100. The Mylar layer 5 is surrounded by the power core wire 1 , the signal core wire 2 , and the ground wire 3 , and is coaxial with the metal shield layer 6 . The metal shield layer 6 may be a single layer shield structure or a double layer shield structure. The outer diameter of the cable 100 is less than 3.1 mm, which is a larger reduction than the outer diameter of the conventional USB cable.

In summary, this creation is in line with the new patent requirements, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those who are familiar with the skill of the present invention are equivalent to the equivalent modifications or changes made by the spirit of the present creation. It should be covered by the following patent application.

100‧‧‧ cable

1‧‧‧Power core

11‧‧‧Mela belt

2‧‧‧Signal core

3‧‧‧ Grounding wire

4‧‧‧Strength

5‧‧‧Melah layer

6‧‧‧Metal shield

7‧‧‧Insulated outer skin

Claims (10)

A cable comprising:
a power supply core for transmitting positive power;
a pair of signal core wires;
a metal shielding layer surrounding the core wire; and an insulating sheath covering the metal shielding layer;
Wherein, the power core wire is covered with a Mylar band. The cable of claim 1, wherein the cable further comprises a plurality of grounding wires arranged between adjacent two core wires. The cable of claim 2, wherein the grounding wires are arranged in a triangle in a radial direction of the cable. The cable of claim 2, wherein the metal shield layer and the ground line are used in parallel for transmitting negative power. The cable of claim 2, wherein the power core wire and the signal core wire extend in the axial direction of the cable and are arranged in a triangle shape in the radial direction of the cable. The cable of claim 5, wherein the power supply core is thicker than the signal core. The cable of claim 6, wherein the signal core is for transmitting a differential signal, and the power core transmits a voltage of +5V. The cable of claim 6, wherein the cable has an outer diameter of less than 3.1 mm. The cable of claim 6, wherein the power supply core has a specification of 25 AWG, and the signal core has a specification of 31 AWG. The cable of claim 2, wherein the cable further comprises a reinforcement member at a position of its axial center, the Mylar belt being a metal Mylar belt or a non-metallic Mylar belt.