CN212725879U

CN212725879U - Data line

Info

Publication number: CN212725879U
Application number: CN202021689559.7U
Authority: CN
Inventors: 雷献辉; 于立成; 李杨
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-03-16
Anticipated expiration: 2030-08-13

Abstract

The disclosure relates to a data line, and relates to the technical field of data transmission of electronic equipment. The scheme provided by the disclosure reduces the material cost and the processing cost of the data line, and has a smaller line diameter on the premise of having the same transmission capacity so as to optimize the flexibility of the data line. The data line includes: a cable and a connector electrically connected to the cable. A grounding pin, a power supply pin and a data transmission pin are arranged in the connector. Wherein the cable comprises a power line and a coaxial line. The power line is electrically connected with the power supply pin. The coaxial line comprises a core wire and a shielding layer coated outside the core wire, the core wire is electrically connected with the data transmission pin, and the shielding layer is independently electrically connected with the grounding pin and also used as a power return ground wire.

Description

Data line

Technical Field

The present disclosure relates to the field of electronic device data transmission technologies, and in particular, to a data line.

Background

The data line is the main equipment for realizing charging and data transmission of electronic equipment such as a mobile phone and the like, and comprises a power line for transmitting charging current and a coaxial line for transmitting data signals. When the portable charger is used, the connector at one end of the data line is connected with the electronic equipment, and the interface at the other end of the data line is connected with external equipment (such as a charger or host equipment), so that the power line and the coaxial line are electrically connected with the electronic equipment and the external equipment, and charging or data transmission of the electronic equipment is realized. However, the data line structure provided in the related art is complicated, the processing cost is high, and there is room for further improvement.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a data line to solve technical drawbacks of the related art.

The data line that this disclosed embodiment provided includes: a cable and a connector electrically connected to the cable;

a grounding pin, a power supply pin and a data transmission pin are arranged in the connector;

the cable includes:

the power line is electrically connected with the power supply pin; and

the coaxial line comprises a core wire and a shielding layer coated outside the core wire, wherein the core wire is electrically connected with the data transmission pin; the shielding layer is separately electrically connected with the grounding pin and also used as a power return ground wire.

In one embodiment, the core comprises a conductive core and an insulating sheath covering the conductive core;

the shielding layer is coated on the insulating sheath of the core wire.

In one embodiment, the shield layer includes a metal wire braid overlying the insulating sheath, the metal wire braid being electrically connected to the ground pin.

In one embodiment, the shielding layer includes a metal wire wrap around the insulating sheath, the metal wire wrap being electrically connected to the ground pin.

In one embodiment, the data line further includes a sensing line, an auxiliary line, and a twisted pair line;

the detection line, the auxiliary line and the twisted pair are arranged into a wire harness;

the power line and the coaxial line are outside the wire harness and arranged around the wire harness.

the twisted pair and the power line are arranged into a wire harness;

the detection line, the auxiliary line, and the coaxial line are outside the wire harness and arranged around the wire harness.

In one embodiment, the data lines include at least two of the power lines.

In one embodiment, the data line comprises a plurality of the coaxial lines, and the coaxial lines, the detection line and the auxiliary line are axially and symmetrically distributed along the data line.

In one embodiment, the data line includes the connectors connected to both ends of the cable, respectively;

with one end of the cable is connected the connector is a Type-C connector

The connector connected with the other end of the cable is a USB connector.

The data line provided by the present disclosure has at least the following beneficial effects:

the data line provided by the embodiment of the disclosure is connected with the charging pin in the connector through the power line, and the data line can transmit the charging current. The data line is used for transmitting data signals by connecting the core wire of the coaxial line with the data transmission pin in the connector. The coaxial cable is connected with a grounding pin in the connector through a shielding layer of the coaxial cable, and the coaxial cable has a protection function of transmitting signals to a core wire and a function of a power return wire in the process of transmitting charging current by a power line. That is, the coaxial line shield in the data line can be used as a power return ground line. In this way, an independent power return ground wire is not arranged in the data wire, so that the data wire structure is simplified, and the material and processing cost is reduced. And, do not set up independent power back ground wire, have the line footpath that has more much under the condition that the data line has the same transmission ability, and then optimize the pliability and the deformability of data line for the data line is portable more, optimizes user experience.

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 illustrating the overall structure of a data line in accordance with an exemplary embodiment;

FIG. 2 is a schematic radial cross-sectional view of a coaxial line in a data line shown in accordance with an exemplary embodiment;

FIG. 3 is a schematic radial cross-sectional view of a cable in a data line shown in accordance with an exemplary embodiment;

fig. 4 is a schematic radial cross-sectional view of a cable in a data line shown in accordance with another exemplary embodiment.

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 embodiments described in the following exemplary embodiments do not represent all embodiments 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 terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this disclosure do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprises" or "comprising" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in the specification and claims of this disclosure, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein is meant to encompass any and all possible combinations of one or more of the associated listed items.

A USB Type-C data line is provided in the related art. The data line includes a power return ground line in addition to the power line and the coaxial line. The power return ground wire is connected with a grounding pin in the data wire connector, and plays a role in electrical protection.

However, the applicant finds that the structure of the USB Type-C data line has a space for further improvement, and simplifies the data line structure, so that the line diameter of the data line is reduced under the condition of equal transmission capability, and the flexibility of the data line is optimized for the user to carry. Fig. 1 to 4 are schematic structural diagrams of data lines according to different exemplary embodiments, and the following describes a structure of a data line provided in an embodiment of the present disclosure with reference to specific drawings.

Fig. 1 is a schematic diagram illustrating an overall structure of a data line according to an exemplary embodiment. As shown in fig. 1, the data line includes a cable 100 and a connector.

The cable 100 includes a power line 110 and a coaxial line 120. The power line 110 is used for transmitting a charging current for supplying power to the electronic device. The coaxial line 120 is used for transmitting a high speed signal (USB 3.1 speed signal).

Fig. 2 is a schematic radial cross-sectional view of a coaxial line shown in accordance with an exemplary embodiment. As shown in fig. 2, the coaxial line 120 includes a core wire 121 and a shield layer 122. The core wire 121 includes a conductive core for transmitting an electrical signal, and an insulating sheath (e.g., an insulating sheath made of rubber or the like) covering the conductive core. The shielding layer 122 is coated on the core wire 121, specifically on the insulating sheath of the core wire 121. The shielding layer 122 has conductivity for avoiding electromagnetic signals outside the coaxial line 120 from interfering with signals transmitted by the core line 121.

Illustratively, the shielding layer 122 includes a metallic wire braid, such as a copper wire braid, a tin-plated copper wire braid. The metal wire is not particularly limited in weaving manner, such as a plain weave structure. Alternatively, the shield 122 includes a metal wire wrap, such as a copper wire wrap, a tin-plated copper wire wrap. The winding manner of the metal wire is not particularly limited, and for example, the core wire 121 is wound as an axis.

With continued reference to fig. 1, the connectors of the data line include a first connector 210 and a second connector 220. The first connector 210 is connected to one end of the cable 100, and the second connector 220 is connected to the other end of the cable 100. Alternatively, one of the first connector 210 and the second connector 220 is a USB connector and the other is a Type-C connector. The USB connector can be electrically coupled with external equipment such as a computer and a charger, and the Type-C connector can be electrically coupled with external equipment such as a mobile phone and a tablet personal computer.

Also, a ground pin, a power supply pin, and a data transmission pin are provided in each of the connectors (the first connector 210 and the second connector 220).

The power line 110 in the cable 100 is connected to the power supply pins of the first connector 210 and the second connector 220 to transmit the charging current. The core wires 121 of the coaxial wires 120 in the cable 100 are connected to the data transmission pins of the first connector 210 and the second connector 220 to transmit high-speed signals.

And, the shield layer 122 of the coaxial line 120 is separately connected to the ground pin. Specifically, the shield layer 122 at one end of the coaxial line 120 is separately connected to the ground pin in the first connector 210, and the shield layer 122 at the other end of the coaxial line 120 is separately connected to the ground pin in the second connector 220. In this way, the grounding through the shielding layer 122 prevents electromagnetic signals outside the coaxial line 120 from interfering with the data signals transmitted by the core line 121.

In addition, the shielding layer 122 is connected to the ground pin, so that the shielding layer 122 can also be used as a power return ground line, and electrical protection is realized in the process of transmitting the charging current by the power line 110. In the case that the shielding layer 122 includes a metal wire braid or a metal wire winding layer, when designing the shielding layer 122, specification parameters of the metal wire (including parameters such as the number of wires, the wire diameter, and the coverage rate of the metal wire on the outer surface of the core wire 121) are designed according to the current capacity and the voltage drop requirement of the whole data wire, so that the shielding layer 122 simultaneously satisfies the interference prevention capability and the power return capability.

In this way, the data line provided by the embodiment of the present disclosure does not have an independent power return ground line. In this way, the data line structure is simplified, reducing material and processing costs. And, do not set up independent power back ground wire, have the line footpath that has more much under the condition that the data line has the same transmission ability, and then optimize the pliability and the deformability of data line for the data line is portable more, optimizes user experience.

The structure of the data line provided by the embodiments of the present disclosure is described below with reference to specific embodiments.

FIG. 3 is a radial interface schematic of a cable in a data line shown in accordance with an exemplary embodiment. As shown in fig. 3, the data line further includes a sensing line, an auxiliary line, and a twisted pair 150.

The detection line (CC) includes a first detection line 131 and a second detection line 132. The first detection line 131 is connected to a first detection pin (CC1) in the connector, and the second detection line 132 is connected to a second detection pin (CC2) in the connector.

The detection line is used for transmitting a detection signal. Therefore, when the electronic equipment is matched with the external equipment, the insertion direction (forward or reverse) of the data wire connector and the type of the external equipment are determined according to the detection signal transmitted by the detection wire. In addition, in the case that a chip is disposed in the cable, one of the first detection line 131 and the second detection line 132 is a Vconn power line for supplying power to the chip, and the other is a detection line, so as to implement a detection function.

The auxiliary lines (SBU) include a first auxiliary line 141 and a second auxiliary line 142 for transmitting auxiliary signals, such as audio signals or video signals.

The twisted pair 150 is a data line (D +, D-) and is an unshielded line (unshielded cables) for transmitting differential signals.

In the solution shown in fig. 3, the cable comprises 8 coaxial wires 120. The detection lines (131 and 132), the auxiliary lines (141 and 142), and the twisted pair 150 are arranged as a bundle X. The power supply line 110 and the 8 coaxial lines 120 are outside the harness X and arranged around the harness X. Also, in this scheme, no separate power return ground is provided.

The arrangement mode shown in fig. 3 is adopted, so that the internal structure of the cable is compact, the wire diameter of the cable is reduced, and the flexibility and the structural stability of the cable are optimized.

FIG. 4 is a radial interface schematic of a cable in a data line shown in accordance with an exemplary embodiment. As shown in fig. 4, the data line also includes sensing lines (131 and 132), auxiliary lines (141 and 142), and a twisted pair 150. And, 2 power lines 110 and 8 coaxial lines 120 are included in the data lines.

Wherein the twisted pair 150 and the power line 110 are arranged as a bundle X. The detection lines (131 and 132), the auxiliary lines (141 and 142), and the coaxial line 120 are outside the harness X and arranged around the harness X. Also, in this scheme, no separate power return ground is provided.

In this way, a large charging current can be transmitted through 2 power lines 110, and the requirement of high-power charging is met. Moreover, under the condition of adopting at least two power lines 110, the thicker parts of the power lines 110, the twisted pair 150 and the like form a wiring harness X which is arranged at the center of the cable, and the coaxial line 120, the detecting line and the auxiliary line are arranged outside the wiring harness X, so that the compact structure of the whole cable can be ensured, the wire diameter of the cable can be reduced, and the flexibility and the structural stability of the cable can be optimized.

Further, it is preferable that 8 coaxial lines 120, the sensing lines (131 and 132), and the auxiliary lines (141 and 142) are axially symmetrically distributed along the data line. For example, in fig. 4, 2 coaxial lines 120 are a group, and two adjacent groups of coaxial lines 120 are separated by a detection line or an auxiliary line. By adopting the mode, the internal structure of the cable is further ensured to be compact, and the performance of the cable is optimized.

In addition, in the embodiment shown in fig. 4, the number of the power lines 110 is not specifically limited, and for example, 2, 3, and the like. In the solutions shown in fig. 3 and 4, the number of the coaxial lines 120 is not limited specifically, and is set according to the actual transmission capability of the data lines.

To sum up, the data line provided by the embodiment of the present disclosure takes into account the shielding function and the power return function through the shielding layer 122 of the coaxial line 120, so as to reduce the material cost and the processing cost of the data line. Moreover, under the condition of having the same transmission function, the cable diameter in the data line provided by the embodiment of the disclosure is smaller, the flexibility of the cable is optimized, and the data line is convenient for a user to carry.

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 disclosure 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.

Claims

1. A data line, comprising: a cable and a connector electrically connected to the cable;

the cable includes:

the power line is electrically connected with the power supply pin; and

2. The data line of claim 1, wherein the core comprises a conductive core and an insulating sheath covering the conductive core;

the shielding layer is coated on the insulating sheath of the core wire.

3. The data line of claim 2, wherein the shield layer includes a metallic wire braid overlying the insulating sheath, the metallic wire braid being electrically connected to the ground pin.

4. The data line of claim 2, wherein the shield layer comprises a metal wire wrap around the insulating sheath, the metal wire wrap being electrically connected to the ground pin.

5. The data line of claim 1, further comprising a sense line, an auxiliary line, and a twisted pair line;

6. The data line of claim 1, further comprising a sense line, an auxiliary line, and a twisted pair line;

the twisted pair and the power line are arranged into a wire harness;

7. The data line of claim 6, wherein the data line comprises at least two of the power lines.

8. The data line of claim 6, wherein the data line comprises a plurality of the coaxial lines, and the coaxial lines, the detecting lines and the auxiliary lines are axially symmetrically distributed along the data line.

9. The data line according to any one of claims 1 to 8, wherein the data line comprises the connectors respectively connected to both ends of the cable;

with one end of the cable is connected the connector is a Type-C connector

The connector connected with the other end of the cable is a USB connector.