CN111210943A

CN111210943A - Wire and USB data line

Info

Publication number: CN111210943A
Application number: CN201811400039.7A
Authority: CN
Inventors: 许强东; 于立成; 李杨
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2018-11-22
Filing date: 2018-11-22
Publication date: 2020-05-29

Abstract

The present disclosure relates to a wire, comprising: the surface of the core wires is provided with an insulating layer, so that the core wires are isolated; a jacket layer which is tubular having a cavity in which the plurality of core wires are accommodated, the jacket layer being an outermost layer of the wire, the jacket layer being made of a conductive plastic material; and a case connected to both ends of the outer layer in a longitudinal direction.

Description

Wire and USB data line

Technical Field

The present disclosure relates to a wire, and more particularly, to a wire and a USB data line that can be used to transmit data.

Background

As shown in fig. 1, the USB data line used in the related art includes

core wires

10, 20, 30, 40, a shielding layer 50, a case 60, and a coating layer 70, and the case 60 is connected to both ends of the USB data line in a length direction. The 4 cores are defined as a VBUS core 10, a D + core 20, a D-core 30 and a GND core 40 according to different functions. At least the VBUS core wire 10, the D + core wire 20 and the D-core wire 30 are surrounded by an insulating layer, 4 core wires are wound together, and the shielding layer 50 wraps the 4 core wires. Two ends of the 4 core wires are connected with corresponding plug terminals. The shielding layer 50 includes an aluminum foil and a woven mesh (or a wound conductor), the woven mesh (or the wound conductor) is disposed outside the aluminum foil, and the aluminum foil and the woven mesh (or the wound conductor) can play a role of electromagnetic shielding. The housing 60 is connected to the GND core wire 40 by a braided mesh (or a wound conductor). The housing 60 is connected to the shielding layer 50, the outer layer 70 surrounds the shielding layer 50, the outer layer 70 protects the braided mesh (or the wound conductor), and the outer layer 70 may be made of an insulating TPE material. The braided mesh (or the wound conductor) of the USB wire in the related art may be lapped to other core wires except the GND core wire 40 due to unclean cleaning when being welded with the GND core wire 40 and the case 60, thereby causing a short-circuit phenomenon.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a wire, which eliminates the problem that a braided mesh (or a wound conductor) may overlap a core wire during welding, and improves the yield of products.

According to a first aspect of embodiments of the present disclosure, there is provided a wire, the wire comprising:

the surface of the core wires is provided with an insulating layer, so that the core wires are isolated;

a jacket layer which is tubular having a cavity in which the plurality of core wires are accommodated, the jacket layer being an outermost layer of the wire, the jacket layer being made of a conductive plastic material;

and a case connected to both ends of the outer layer in a longitudinal direction.

Preferably, the housing is made of an electrically conductive material.

Preferably, the outer layer is made of a conductive TPE material.

Preferably, the plurality of cores include a GND core, which is spaced apart from the outer layer.

Preferably, the outer layer directly surrounds the plurality of core wires.

Preferably, an aluminum foil is disposed between the plurality of core wires and the outer layer.

Preferably, the outer layer directly surrounds the aluminum foil.

Preferably, the plurality of core wires are twisted together.

According to a second aspect of the embodiments of the present disclosure, there is provided a USB data line, including the conductor of any one of the above technical solutions.

Preferably, the USB data line further includes a plug terminal disposed in the housing, and both ends of the plurality of core wires are connected to the corresponding plug terminal.

The technical scheme provided by the embodiment of the disclosure can obtain the following beneficial effects: through the connection of the outer tegument layer capable of conducting electricity and the shell, the outer tegument layer plays a role in shielding, a woven mesh (or a wound conductor) in the related technology is omitted, the problem that the core wires are possibly lapped when the woven mesh (or the wound conductor) is welded is eliminated, and the product yield is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic diagram showing a USB data line in the related art.

FIG. 2 is a schematic diagram illustrating a USB data line in accordance with an exemplary embodiment.

Description of the reference numerals

10 VBUS core wire 20D + core wire 30D-core wire 40 GND core wire 50 shielding layer 60 shell 70 tegument layer

The 1 VBUS core wire 2D + core wire 3D-core wire 4 GND core wire 5 is covered by the layer 6.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The length direction mentioned in the following description is an extending direction of the USB data line.

FIG. 2 is a schematic diagram illustrating a USB data line in accordance with an exemplary embodiment. As shown in fig. 2, a USB data line according to the present disclosure includes

cores

1, 2, 3, 4 and a jacket layer 5.

The 4

cores

1, 2, 3, 4 are defined as a VBUS (power positive) core 1, a D + (data +) core 2, a D- (data-) core 3 and a GND (ground) core 4, respectively, depending on the function. The outer surface of the 4

core wires

1, 2, 3, 4 is provided with an insulating layer which separates (physically and/or electrically) the core wires. The insulating layer can have different colours to conveniently distinguish the heart yearn of different functions. For example, red represents the VBUS core 1, green represents the D + core 2, white represents the D-core 3, and black represents the GND core 4.

It is understood that the outer layer of the GND core wires 4 may not be provided with an insulating layer, and the 4 core wires may still be isolated.

Further, 4 core wires may be twisted together, thereby increasing the strength of the USB data line.

The outer layer 5 is tubular having a cavity, for example, a circular tube, and 4

core wires

1, 2, 3, 4 are disposed in the cavity of the outer layer 5. The outer layer 5 is made of a conductive plastic material, for example, the outer layer 5 is made of a conductive TPE (thermoplastic elastomer) material, it can be understood that the TPE material is originally an insulating material, and when the outer layer 5 is formed by processing, a conductive agent such as carbon powder is added into the TPE material to make the originally insulating TPE material have conductivity.

The conductive plastic material can also be conductive PVC, conductive TPU and the like.

The outer layer 5 can be used as the outermost layer of the USB data line, i.e. can play a role of electromagnetic shielding, and can also protect the core wire of the inner layer. The GND core 4 is separated (physically spaced and/or electrically insulated) from the outer layer 5.

The housing 6 is connected to both ends of the tegument 5 in the longitudinal direction, and the housing 6 is made of a conductive metal material, such as iron, stainless steel. The case 6 and the overcoat layer 5 form a shield as a whole, enabling the USB data line to pass an EMC (electromagnetic compatibility) test.

Further, the USB data line further includes plug terminals, which are disposed in the housing 6, and both ends of the 4 core wires are connected to the corresponding plug terminals.

Further, an aluminum foil may be disposed between the 4

core wires

1, 2, 3, 4 and the outer layer 5, and the aluminum foil contributes to an improvement of the electromagnetic shielding effect and is low in cost. Note that the aluminum foil includes an aluminum layer and an insulating paper, and thus even if the GND wire 4 has no insulating layer, the overcoat layer 5 is electrically insulated from the GND core wire 4.

It can be understood that the braided mesh in the prior art is made of metal wires, and easily forms a thread end, and when the braided mesh is welded with the GND core wire 40 and the shell 60, the braided mesh may be overlapped with other core wires except the GND core wire 40 due to unclean thread ends, thereby causing a short circuit phenomenon. Moreover, the woven mesh is usually made of a relatively soft metal such as copper, aluminum, etc., and the material cost thereof is relatively high. The USB data line in the embodiment of the disclosure saves the mesh grid on the basis of keeping the electromagnetic shielding function, thereby avoiding the short circuit caused by the lap joint of the mesh grid to other core wires except the GND core wire, improving the yield of the wire, and saving the material cost of the mesh grid originally needed and the processing cost of corresponding steps.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the terms of the appended claims.

Claims

1. A wire, comprising:

2. The lead of claim 1, wherein the housing is made of an electrically conductive material.

3. The lead of claim 1, wherein the outer layer is made of a conductive TPE material.

4. The wire of claim 1, wherein the plurality of cores includes a GND core, the GND core being spaced apart from the jacket.

5. The wire of claim 1, wherein the outer layer directly surrounds the plurality of core wires.

6. The wire of claim 1, wherein an aluminum foil is disposed between the plurality of core wires and the outer layer.

7. The wire of claim 6, wherein the outer layer directly surrounds the aluminum foil.

8. The wire of claim 1, wherein the plurality of core wires are twisted together.

9. A USB data line, characterized in that it comprises a conductor according to any of claims 1 to 8.

10. The USB data cable of claim 9, further comprising plug terminals disposed within the housing, wherein both ends of the plurality of core wires are connected to the corresponding plug terminals.