WO2018103158A1 - 一种带usb端口的设备 - Google Patents

一种带usb端口的设备 Download PDF

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Publication number
WO2018103158A1
WO2018103158A1 PCT/CN2016/112792 CN2016112792W WO2018103158A1 WO 2018103158 A1 WO2018103158 A1 WO 2018103158A1 CN 2016112792 W CN2016112792 W CN 2016112792W WO 2018103158 A1 WO2018103158 A1 WO 2018103158A1
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WO
WIPO (PCT)
Prior art keywords
floating
metal
region
electronic device
area
Prior art date
Application number
PCT/CN2016/112792
Other languages
English (en)
French (fr)
Inventor
戴勇军
刘晓松
张文亮
何成
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2019530684A priority Critical patent/JP6790273B2/ja
Priority to US16/467,455 priority patent/US10997109B2/en
Priority to EP16923157.8A priority patent/EP3544126B1/en
Priority to CN201680091359.1A priority patent/CN110036539B/zh
Publication of WO2018103158A1 publication Critical patent/WO2018103158A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4063—Device-to-bus coupling
    • G06F13/4068—Electrical coupling
    • G06F13/4072—Drivers or receivers
    • G06F13/4077—Precharging or discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6594—Specific features or arrangements of connection of shield to conductive members the shield being mounted on a PCB and connected to conductive members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/6608—Structural association with built-in electrical component with built-in single component
    • H01R13/6625—Structural association with built-in electrical component with built-in single component with capacitive component
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
    • H01R13/7195—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with planar filters with openings for contacts
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
    • H05K1/162—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed capacitors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
    • H05K1/023—Reduction of cross-talk, noise or electromagnetic interference using auxiliary mounted passive components or auxiliary substances
    • H05K1/0231—Capacitors or dielectric substances
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0237—High frequency adaptations
    • H05K1/025—Impedance arrangements, e.g. impedance matching, reduction of parasitic impedance
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
    • H05K2201/09781—Dummy conductors, i.e. not used for normal transport of current; Dummy electrodes of components

Definitions

  • the present invention relates to the field of USB connection technologies, and in particular, to a device with a USB port.
  • USB ports for charging and data transmission.
  • the metal casing of the universal serial bus (USB) port on the electronic device is generally provided with two or four fixing legs 11 (as shown in FIG. 1a), and the USB port on the electronic device is fixed to the electronic device through the fixing leg 11.
  • the metal case of a general USB port is connected to the ground on the PCB of the electronic device through the fixing leg 11 (as shown in FIG. 1b). Since the metal casing of the USB port is close to the USB tongue, non-insulating materials such as sweat and dust particles are accumulated between the tongue of the USB port and the metal casing in daily use, especially the power supply tube on the USB casing and the tongue.
  • VBUS feet
  • the USB port is usually placed in the lower part of the electronic device, and the lower part of the electronic device is generally provided with an antenna.
  • the USB port When the USB port is charged or data is transmitted, it may cause interference to the antenna.
  • the metal casing of the USB port is currently generally connected to the ground on the PCB of the electronic device through an additional guard device.
  • the protection device acts as an isolation interference and prevents micro-short circuit, but the use of the protection device occupies the internal space of the electronic device, which is not conducive to the development of thinning and thinning of the electronic device.
  • Embodiments of the present invention provide an electronic device, a USB cable, and a charger for preventing short circuit of a USB port and shielding USB port interference, and occupying an internal space of the electronic device.
  • an electronic device comprising a USB port and a PCB, the PCB having at least two wiring layers, a first one of the at least two wiring layers having a first floating region and a circuit other than the first floating region, an insulating medium between the first floating region and a line other than the first floating region, a second wiring layer of the at least two wiring layers and the first wiring layer Adjacent and separated by an insulating material, the second wiring layer has a first metal region, and an orthographic projection of the first floating region in the second wiring layer has a coincident region with the first metal region, a floating area and the first metal area are not connected;
  • the metal casing of the USB port has a plurality of fixing legs, the plurality of fixing feet are fixed on the PCB, the plurality of fixing feet and the PCB The ground is not connected, the plurality of fixing legs include a first fixing leg, the first fixing leg is connected to the first floating area, and the first fixing leg is not connected to the first metal zone.
  • the metal casing of the USB port of the electronic device is not connected to the ground of the PCB, so that no short circuit occurs, and the floating area and the metal area opposite to the floating area are disposed on the PCB, and the metal port of the electronic device is connected to the floating area, thereby A capacitor is formed to shield the USB port from interference with the antenna.
  • the capacitor formed by the first floating region and the first metal region is s is the facing area of the first floating region and the first metal region, d is the spacing between the first floating region and the first metal region, and ⁇ is the dielectric constant of the insulating medium, k It is a static constant.
  • the PCB has a second floating area, and the second floating area is located in the first wiring layer
  • the second wiring layer has a second metal region, and the orthographic projection of the second floating region at the second wiring layer and the second metal region have a coincident region, the second floating region and the first The two metal regions are not connected;
  • the plurality of fixing legs of the USB port include a second fixing leg, the second fixing leg is connected to the second floating region, and the second fixing leg and the second metal The area is not connected.
  • the third wiring layer of the at least two wiring layers has a third floating region
  • the fourth wiring layer of the at least two wiring layers is adjacent to the third wiring layer and is isolated by an insulating medium
  • a third metal region is disposed in the fourth wiring layer, the orthographic projection of the third floating region and the third metal region having a coincident region, the third floating region and the third metal
  • the first fixing leg is connected to the first floating area and the third floating area, and the first fixing leg is not connected to the first metal area and the third metal area.
  • the first wiring layer and the third wiring layer are not adjacent.
  • a pitch of the first wiring layer and the third wiring layer is greater than a pitch of the first wiring layer and the second wiring layer, and is larger than the third wiring layer and the fourth wiring The spacing of the layers.
  • the first metal region is a ground of the PCB. This allows a better noise return.
  • a charger including a USB port and a PCB, the USB port having a plurality of fixed legs, the fixed legs being fixed in the PCB, the fixed feet Not connected to the ground of the PCB.
  • the PCB has at least two wiring layers, and the at least two wiring layers are separated by an insulating material, and the at least two wiring layers are
  • the first wiring layer has a first floating area and a line other than the first floating area, and the first floating area and the line other than the first floating area have an insulating medium, the at least two wiring layers a middle second wiring layer adjacent to the first wiring layer and isolated by an insulating medium, the second wiring layer having a first metal region, an orthographic projection of the first floating region at the second wiring layer and the
  • the first metal region has a coincident region, the first floating region and the first metal region are not connected;
  • the plurality of fixed legs include a first fixing leg, and the first fixing leg is opposite to the first floating region Connected, the first fixing leg is not connected to the first metal zone.
  • the PCB has a pad, the pad is separated from a line on the PCB by an insulating material; the fixing leg and the ground of the PCB The connection is not specifically: the fixing leg is connected to the pad.
  • a USB cable in a third aspect, includes a first USB port, a second USB port, a shielded wire, and a ground wire;
  • the shielded wire includes a first end and a second end, where the One end is adjacent to the first USB port, the second end is adjacent to the second USB port; the first end is not connected to the metal casing of the first USB port; the shielding line and the ground line Not connected.
  • the second end is not connected to the metal casing of the second USB port.
  • the second end is connected to the metal casing of the second USB port, and the shielding line is adjacent to an end of the first USB port and the first A metal port of a USB port is connected.
  • a charging system comprising the electronic device of any one of the first aspect to the fifth implementation of the first aspect, such as any of the second aspect to the second implementation of the second aspect And a USB cable for connecting the electronic device and the charger.
  • a charging system comprising the electronic device of any one of the first aspect to the fifth implementation of the first aspect, such as any of the third aspect to the second implementation of the third aspect A USB cable, and a charger, the first USB port of the USB cable is used to connect the charger, and the second USB port of the USB cable is used to connect the electronic device.
  • a data transmission system comprising the first electronic device of any one of the first aspect to the fifth implementation of the first aspect, such as the first aspect to the fifth implementation of the first aspect
  • a USB cable the USB cable is used to connect the first electronic device and the second electronic device.
  • a data transmission system comprising the first electronic device of any one of the first aspect to the fifth implementation of the first aspect, such as the second implementation of the third aspect to the third aspect a USB cable of any of the modes, and a second electronic device, where the USB cable is The first USB port is configured to connect to the second electronic device, and the second USB port of the USB cable is used to connect the first electronic device.
  • the metal casing of the USB port of the electronic device is not connected to the ground of the PCB, so that no short circuit occurs, and the floating area and the metal area opposite to the floating area are disposed on the PCB, and the metal port of the electronic device is connected to the floating area, thereby A capacitor is formed to shield the USB port from interference with the antenna.
  • 1a is a schematic diagram of a USB port in the prior art
  • FIG. 1b is a schematic diagram of a micro short circuit in a USB port in the prior art
  • 1c is a schematic diagram of a USB port connected through a protection device and a PCB in the prior art
  • FIG. 2 is a schematic structural diagram of a mobile phone according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a USB port connected to a charger through a USB cable on an electronic device according to an embodiment of the present invention
  • FIG. 4 is a schematic cross-sectional view of a PCB according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a connection between a USB port and a PCB on an electronic device according to an embodiment of the present invention
  • Figure 6a is a partial schematic view of the dashed frame of Figure 400
  • Figure 6b is a front elevational view of an implementation corresponding to Figure 6a;
  • Figure 6c is a front elevational view of another implementation of Figure 6a
  • Figure 6d is an equivalent schematic diagram of the circuit of Figure 6a
  • Figure 7 is a front elevational view of a PCB in accordance with an embodiment of the present invention.
  • FIG. 8 is another schematic diagram of a connection between a fixed pin of a USB port and a PCB on an electronic device according to an embodiment of the present invention.
  • FIG. 9 is still another schematic diagram of a connection between a fixed pin of a USB port and a PCB on an electronic device according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a USB cable in the prior art
  • FIG. 11 is a schematic diagram of a USB cable according to an embodiment of the present invention.
  • the electronic device can be a mobile phone (also known as a smart phone), a tablet personal computer, a personal digital assistant (PDA), an e-book reader, or a wearable device. (Wearable Device), Virtual Reality Interactive Device, etc., the electronic device can pass 2G (second generation mobile phone communication technical specification), 3G (third generation mobile phone communication technical specification), 4G (fourth generation Mobile communication technology specifications), 5G (fifth generation mobile communication technical specifications) or W-LAN (wireless local area network) or communication methods that may occur in the future establish communication with the network.
  • 2G second generation mobile phone communication technical specification
  • 3G third generation mobile phone communication technical specification
  • 4G fourth generation Mobile communication technology specifications
  • 5G fifth generation mobile communication technical specifications
  • W-LAN wireless local area network
  • the structure of the electronic device is described by taking a mobile phone as an example.
  • FIG. 2 shows a schematic structural diagram of a mobile phone 100 according to some embodiments.
  • the mobile phone can support a variety of applications, such as telephony applications, instant messaging applications, digital camera and/or camera applications, web browsing applications, music and/or video playback applications, video communication applications, social networking applications, financial finance Apps, weather apps, shopping apps, office apps, and more.
  • applications such as telephony applications, instant messaging applications, digital camera and/or camera applications, web browsing applications, music and/or video playback applications, video communication applications, social networking applications, financial finance Apps, weather apps, shopping apps, office apps, and more.
  • the mobile phone 100 includes components such as an RF (Radio Frequency) circuit 110, a memory 120, an input unit 130, a display unit 140, a sensor 150, an audio circuit 160, a USB port 170, a processor 180, and a power supply 190.
  • RF Radio Frequency
  • the mobile phone structure shown in FIG. 2 is only an example of implementation, does not constitute a limitation of a mobile phone, may include more or less components than illustrated, or may combine certain components. , or different parts layout.
  • the RF circuit 110 can be used for transmitting and receiving information or during a call, and receiving and transmitting the signal. Specifically, after receiving the downlink information of the base station, the processor 180 processes the data. In addition, the uplink data is designed to be sent to the base station.
  • RF circuits include, but are not limited to, an antenna, at least one amplifier, a transceiver, a coupler, an LNA (Low Noise Amplifier), a duplexer, and the like.
  • RF circuitry 110 can also communicate with the network and other devices via wireless communication.
  • the wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA (Code Division Multiple Access). , Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access), LTE (Long Term Evolution), e-mail, SMS (Short Messaging Service), and the like.
  • the memory 120 can be used to store software programs and modules, and the processor 180 executes various functional applications and data processing of the mobile phone 100 by running software programs and modules stored in the memory 120.
  • the memory 120 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to The data created by the use of the mobile phone 100 (such as audio data, phone book, etc.) and the like.
  • memory 120 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • the input unit 130 can be configured to receive input numeric or character information, and to generate a key signal or action signal input related to user settings and function control of the mobile phone 100.
  • the input unit 130 may include one or more of the touch panel 131, the camera 132, and other input devices 132.
  • the touch panel 131 can be a touch display screen or a touch panel.
  • the touch display screen is a device that integrates a display screen and a touch area
  • the touch panel is a touch of a device that does not display a visual output different from the touch display screen.
  • the touchpad can be a touch sensitive separate from the display panel a touch surface 131 or an extension of the touch sensitive surface formed by the touch screen
  • the touch panel 131 can collect a touch operation on or near the user (such as the user using a finger, a stylus, or the like on the touch panel 131 or The operation in the vicinity of the touch panel 131) and the corresponding connection device are driven according to a preset program.
  • the touch panel 131 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information.
  • the processor 180 is provided and can receive commands from the processor 180 and execute them.
  • the touch panel 131 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the camera 132 may be one or more analog cameras, a digital camera, a depth camera, or an unlimited number of combinations of the foregoing, and the camera 132 may collect video signals and transmit the video signals to the processor 180 to An input signal is acquired by the processor 180 from the video signal (such as identifying a user's gesture operation from the video signal).
  • the input unit 130 may also include other input devices 133.
  • the other input device 133 may include, but is not limited to, one or more of a physical keyboard, a function key (such as a volume control button, a switch button, etc.), a trackball, a mouse, a joystick, a brain wave identifier, a gyroscope, and the like.
  • the input unit 130 can cover the microphone 162, the sensor 150, and the like.
  • the microphone 162 can collect the audio signal and transmit the audio signal to the processor to collect the input signal from the audio signal by the processor. (such as identifying the user's voice operation from the audio signal).
  • the display unit 140 can be used to display information input by the user or information provided to the user and various menus of the mobile phone 100.
  • the display unit 140 may include one or more of the display panel 141, the projection device 142, or other display devices 143. Alternatively, an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode, organic
  • the display panel 141 is configured in the form of a light emitting diode or the like.
  • the touch panel 131 can cover the display panel 141. When the touch panel 131 detects a touch operation on or near the touch panel 131, the touch panel 131 transmits to the processor 180 to determine the type of the touch event, and then the processor 180 according to the touch event.
  • the type provides a corresponding visual output on display panel 141.
  • the touch panel 131 and the display panel 141 are two independent components to implement the input and input functions of the mobile phone 100 in FIG. 2, in some embodiments, the touch panel 131 and the display panel 141 may be The input and output functions of the mobile phone 100 are implemented by integration.
  • the projection device 142 may be a pico projector or a 3D holographic projector, wherein the pico projector may be a device mounted on the smart glasses device and projecting an image on the retina of the human eye through a translucent prism for imaging. It can be a device that is imaged by projection on a display screen or display screen of a mobile phone.
  • a 3D (three-dimensional) holographic projector can directly project in a physical space using the principles of interference and diffraction to present a true three-dimensional image of the object.
  • the display unit 140 may also include other display devices 142.
  • the other display device 142 may include, but is not limited to, one of a wireless local area network, a USB data line (Universal Serial Bus), an HDMI (High Definition Multimedia Interface) cable, and the like.
  • One or more display devices (such as televisions, etc.) that are connected to a mobile phone.
  • Mobile phone 100 may also include at least one type of sensor 150, such as a light sensor, motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 141 according to the brightness of the ambient light, and the proximity sensor may close the display panel 141 when the mobile phone 100 moves to the ear. And / or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the posture of the mobile phone (such as horizontal and vertical screen switching).
  • the mobile phone 100 can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, I will not repeat them here.
  • the audio circuit 160, the speaker 161, and the microphone 162 can provide an audio interface between the user and the mobile phone 100.
  • the audio circuit 160 can convert the received audio data into an electrical signal, It is transmitted to the speaker 161 and converted into a sound signal output by the speaker 161; on the other hand, the microphone 162 converts the collected sound signal into an electrical signal, is received by the audio circuit 160, converted into audio data, and then processed by the audio data output processor 180. Thereafter, it is transmitted via RF circuit 110 to, for example, another mobile phone, or audio data is output to memory 120 for further processing.
  • the Universal Serial Bus (USB) port is used to communicate or charge with external devices.
  • the mobile phone 100 can perform data transmission by other USB devices through the USB port 170, or implement a charging function or the like through the USB port 170.
  • the processor 180 is the control center of the mobile telephone 100, connecting various portions of the entire mobile telephone using various interfaces and lines, by running or executing software programs and/or modules stored in the memory 120, and recalling stored in the memory 120.
  • the data performing various functions and processing data of the mobile phone 100, thereby integrally monitoring the mobile phone.
  • the processor 180 may include one or more processing units; preferably, the processor 180 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like.
  • the modem processor primarily handles wireless communications. It can be understood that the above modem processor may not be integrated into the processor 180.
  • the mobile phone 100 also includes a power source 190 (such as a battery) for powering various components.
  • a power source 190 such as a battery
  • the power source can be logically coupled to the processor 180 through a power management system to manage functions such as charging, discharging, and power management through the power management system. .
  • the mobile phone 100 can have a housing (not shown).
  • the housing which may also be referred to as a housing, may be formed from any suitable material, including plastic, glass, ceramic, metal, or other suitable material, or a combination of these materials.
  • portions of the housing or housing may be formed from a dielectric or other low conductivity material; thereby not interfering with the operation of the conductive antenna elements located adjacent the housing.
  • Portions of the housing or housing may also be formed from a conductive material, such as a metal.
  • the housing is formed from a metal component, one or more of the metal components can be used as part of an antenna in the mobile telephone 100, such as a radiator or ground.
  • the mobile phone 100 may also include a camera, a Bluetooth module, etc., not here. Let me repeat.
  • the type of the USB port type is not limited, and may include a Type C (USB Type-C) port and a Type A (USB Type-A) port, and a Type B (USB Type-B). ) Ports, etc.
  • FIG. 3 shows a schematic diagram of an electronic device connected to a charger via a USB cable.
  • the electronic device 320 and the charger 310 are connected by a USB cable 330.
  • the USB cable in FIG. 3 includes two ports, USB port A and USB port B, wherein the USB port A of the USB cable 330 is connected to the charger 310, and the USB port B of the USB cable 330 is connected to the USB port of the electronic device.
  • the metal case 334b of the USB port B of the USB cable 330 is in contact with the metal case 322 of the USB port of the electronic device, and the plastic case 335b of the B end of the USB cable 330 is used to abut the case of the electronic device 320, and is fixed and protected.
  • USB port B of USB cable 330 includes a power line 331, a ground line 332, a data line, and the like (not shown).
  • the power line 331 connects the power pin of the charger and the power pin of the USB port of the electronic device, and the ground wire 332 is connected.
  • the ground pin of the charger and the ground pin of the USB port of the electronic device perform charging.
  • the following is a manner in which the metal casing 322 of the USB port of the electronic device 320 is fixed on the printed circuit board (PCB) of the electronic device in the embodiment of the present invention.
  • the metal casing 322 of the USB port is not connected to the PCB. Ground.
  • the PCB generally has one or more wiring layers, such as 2 layers, 4 layers, 6 layers, etc., the wiring layers are separated by an insulating medium, the insulating medium may be a material of FR-4, and the wiring layer has lines and lines. It is used as a tool for turning on between the originals, as well as grounding and power.
  • the circuit is generally made of copper foil, tin and other conductive metal materials. Each layer of wiring layer can be routed according to the design requirements of electronic equipment. The lines located in different wiring layers can be connected through via holes according to design requirements, such as wiring layers. The upper ground wire can be connected through the via hole.
  • the PCB in the embodiment of the present invention has at least two wiring layers. FIG.
  • FIG. 4 is a schematic cross-sectional view of a PCB according to an embodiment of the present invention.
  • the PCB has wiring layers 211, 212, 213, and 214, and the four wiring layers are separated by an insulating medium 215.
  • the area outside the line on the wiring layer is an insulating medium, and the lines are isolated by an insulating medium.
  • At least one of the plurality of wiring layers on the PCB has a floating region, and the floating region may be the same material as the wiring layer, such as copper foil.
  • the floating area is isolated from other lines in the same layer by an insulating medium.
  • the adjacent wiring layer of the floating region has a metal region, and the metal region is opposite to the floating region, that is, the orthographic projection of the metal region and the floating region on the wiring layer where the metal region is located overlaps section.
  • the orthographic projection of the floating region on the wiring layer where the metal region is located refers to floating with a set of rays perpendicular to the first plane a floating image of the shape of the region projected onto the first plane, the metal region and the orthographic projection of the floating region on the wiring layer where the metal region is located have a coincident portion, that is, the metal region and the The floating image has a portion that coincides in position on the first plane.
  • the floating area and the metal area are not connected, that is, there is no conductive medium connection.
  • the metal region may be a ground of a PCB, a power source, or the like.
  • a plurality of floating regions may be located in different wiring layers of the PCB, and a plurality of floating regions are also present in one wiring layer of the PCB.
  • the two floating regions of the different wiring layers are opposite, and the spacing between the wiring layers is the same, the two floating regions are separated by a wiring layer, that is, the wiring layers in which the plurality of floating regions are located are not adjacent. .
  • a floating region may be disposed in the wiring layer 211, and a metal region opposite to the floating region is disposed in the wiring layer 212.
  • the floating region may be disposed in the wiring layer 212, and the metal region opposite to the floating region may be disposed in the wiring layer 211 or 213.
  • the floating area may be plural, for example, a floating area is provided in each of the wiring layers 211 and 214, and a metal area opposite to the floating area may be disposed in the wiring layers 212 and 213.
  • the metal regions opposite to the floating regions may be respectively disposed in the wiring layers 211 and 214, if the two floating regions are opposite (that is, the floating regions in the wiring layer 212 are wired)
  • the orthographic projection in the layer 213 and the floating region in the wiring layer 213 have overlapping regions, and the spacing d2 between the wiring layers 212 and 213 is required to be larger than the spacing d1 between the wiring layers 211 and 212, and d2 is also larger than the wiring layer 213 and The spacing d3 between 214, so that the floating area and the metal area opposite to the floating area can form a capacitor; if the two floating areas are not opposite, d1, d2 and d3 may not have this requirement.
  • a USB port is usually fixed on the PCB, and a metal port of a USB port usually has 2-4 fixed pins. Multiple fixed feet of the USB port can be connected to the same metal floating area, or The floating areas in the same wiring layer are respectively connected, and the floating areas of each fixed foot may be different.
  • the manner in which the USB port and the PCB are fixed may be a patch mode or a pin fixing method.
  • the mounting method is that the fixing legs of the USB port are connected by a bonding method to a fixed foot connection point of the surface of the PCB, and the connection point is a solder joint.
  • the connection point of the fixed pin is disposed in a floating area of a surface layer of the PCB, or is connected to a floating area of the PCB through a via hole or a trace.
  • the pin is fixed in such a manner that the fixing leg of the USB port is inserted into the connection point of the PCB, and the connection point is a connection hole, and the fixing leg is soldered and fixed in the connection hole, and the connection hole penetrates the multilayer wiring layer.
  • the connecting hole penetrates the plurality of floating regions, and the fixed leg is inserted into the connecting hole and the plurality of a floating area connection, wherein the connection layer does not have a floating area in the wiring layer, and is separated from the layer line by the insulating medium; or the wiring layer penetrated by the connection hole, the floating area and the connection hole have a line phase Connection, the connection hole is not connected to other lines.
  • part of the fixed legs of the USB port are connected to the floating area of the PCB, and the other part can be connected to the pad of the PCB, and the pad is separated from all the lines on the PCB by the insulating medium.
  • a floating area is disposed on the PCB, and the fixing leg of the metal casing of the USB port and the floating area are connected to form one electrode of the capacitor, and the metal area of the adjacent layer opposite to the floating area forms another capacitor.
  • the USB port is usually placed in the lower part of the electronic device, and the lower part of the electronic device is generally provided with an antenna. When the USB port is charged or data is transmitted, it may cause interference to the antenna.
  • the capacitance formed by the floating area and the metal area of the adjacent layer opposite to the floating area on the PCB can shield the USB port from interference to the antenna.
  • the relationship between the capacitance and the interference frequency point F is C is the capacitor, the interference frequency F is the frequency at which the USB port interferes with the RF signal, Xc is the characteristic impedance, and the Xc circuit is designed to reduce the noise demand.
  • a plurality of capacitances C can be set, that is, a plurality of floating regions are set.
  • Capacitor C can also be based on the formula It is estimated that F is the interference frequency and L is the set value, thereby estimating the capacitance C.
  • the value of the dielectric constant ⁇ is determined by the material type of the insulating medium on the PCB
  • s is the facing area of the floating area and the metal area
  • the electrode spacing d is specifically The separation distance between the floating area and the metal area, that is, the interval between the floating area and the wiring layer where the metal area is located.
  • the facing area of the floating area of the PCB and the metal area opposite to the floating area, the spacing of the wiring layers, and the material of the insulating medium can be designed according to the required capacitance.
  • the required capacitance is 33PF
  • the interlayer distance of the PCB is 0.1mm
  • the insulating material is FR-4
  • the ⁇ of FR-4 is 4.2
  • FIG. 5 shows an implementation manner of a USB port and a PCB connection in an electronic device according to an embodiment of the present invention.
  • a PCB having wiring layers 1-8 will be described as an example.
  • Each of the wiring layers 1-8 is isolated by an insulating medium 443, and each of the wiring layers 1-8 is provided with a ground 441, and the ground 441 of each layer is communicated through the via holes 442.
  • the floating area 444 may be disposed in the wiring layers 1, 3, 5, and 7, and the connected PCB area of the fixed leg 326b may be in the wiring layer 1, 4, 7 Set the floating area 444.
  • the adjacent line of the floating area 444 is a ground line
  • the opposite metal area of the adjacent layer is a ground line as an example for description. In the actual product, the adjacent layer of the floating area 444 or the adjacent layer is adjacent. The opposite metal area may also be a line other than the ground line.
  • the floating area 444 is separated from the same layer by the insulating medium, and the floating area 444 and the ground of the adjacent layer are separated by the insulating medium and are not connected.
  • the corresponding metal regions of adjacent layers in the floating region 444 are set to ground, and good noise recirculation can be achieved.
  • FIG. 5 Two securing legs 326a and 326b of the metal housing 322 of the USB port are shown in FIG. 5, and the metal housing 322 is secured to the PCB 440 by mounting legs 326a and 326b in contact with the floating area 444 of the PCB 440.
  • the PCB 440 in an electronic device is usually a PCB, and a cross-sectional view of a portion of the PCB on the PCB that is fixed to the USB port is shown in FIG.
  • a part of the fixing leg of the USB port and the fixing manner of the PCB may also be as shown in FIG. 8.
  • the fixing leg 326c is fixed on the PCB through the through hole 745.
  • the through hole 745 and the ground line 441 are not connected.
  • FIG. 6a is a schematic view of the dotted line portion 400 of FIG. 5, the floating region 444 and the ground 441 of the adjacent wiring layer form a capacitance, and the facing area s is the floating region 444 orthographically projected onto the adjacent wiring layer and the ground phase.
  • FIG. 6b A possible implementation of FIG. 6a is shown in FIG. 6b, with the area s being the area of the floating area 444 minus the area of the non-coincident area 450.
  • FIG. 6c Another possible implementation of FIG. 6a is shown in FIG. 6c.
  • the area s is the area of the floating area 444 minus the area of the non-coincident area 451. If the non-overlapping area 451 is sufficiently small, it can be considered negligible.
  • the electrode spacing d is the spacing between the floating area 444 and the ground 441 (as shown in Figure 6a).
  • the resulting capacitance is as shown in Figure 6d.
  • FIG. 7 is a schematic diagram showing the wiring of a wiring layer in the PCB in the embodiment of the present invention, the power pin soldering point 661 of the USB port, the data soldering points 662 and 663, the ground soldering point 664, the floating area 444, the ground 441,
  • the other line 665 is provided on a wiring layer, except for the line, which is an insulating medium 443.
  • the floating area 444 is isolated from the adjacent ground line 441, the floating area 444 and other lines 665, and the floating area 444 is provided with a fixed port of the USB port.
  • Connected cross-shaped traces, cross-type traces can also be rice-shaped traces, or other ways of routing.
  • FIG. 9 is another implementation manner of connecting a USB port and a PCB in an electronic device according to an embodiment of the present invention.
  • the PCB has a wiring layer 1-6, and the grid in FIG. 9 is a floating area, and the gray is another line.
  • the area is set in the wiring layers 1, 3, 4, and 5.
  • the fixed pins 901 and 902 of the USB port can be connected to the same floating area (such as a floating area in the wiring layer 1).
  • the floating areas in the wiring layers 4 and 5 are opposite,
  • the pitch of the wiring layers 4 and 5 is larger than the pitch of the wiring layers 3 and 4, and is also larger than the pitch of the wiring layers 5 and 6.
  • USB port of the electronic device is fixed on the PCB in the embodiment of the present invention.
  • the charger and USB cable in the prior art are as shown in FIG. 10.
  • the metal casing 612 of the USB port of the charger 610 is connected to the ground of the charger 610 through a fixed leg.
  • the USB cable 630 includes a power line 631 and a ground line 632.
  • the shield line 633, the data line, etc. (not shown), the power line 631 and the ground line 632 are used to connect the electronic device and the charger for charging as described above, and the data line is used for transmission.
  • the shielded wire 633 is pressed together with the metal shells 634a and 634b of the two USB ports of the USB cable 630, and thus the shielded wire 633 is connected to the metal shells 634a, 634b.
  • the USB cable in the embodiment of the present invention is as shown in FIG. 11.
  • the USB cable 730 includes a power line 731, a ground line 732, a shield line 733, a data line (not shown), a power line 731 and a ground line.
  • the 732 is used to connect electronic devices and chargers for charging, and the data lines are used to transmit data.
  • the shielded wire 733 is connected to the metal case 734b of the USB port B of the USB cable 330, and the shielded wire 733 and the metal case 734a of the USB port A on the USB cable are not connected.
  • the shielded line 733 of the USB cable is close to the USB port.
  • the A side is not connected to the metal case of the USB port A. Even if the metal case 612 of the USB port of the charger 610 is grounded, the shield line 733 is not grounded, so the metal case 322 of the USB port of the electronic device 320 is not grounded, thereby Prevent the occurrence of a short circuit in the USB port of the electronic device.
  • the metal shells of the USB cable A and the USB port B of the USB cable may not be connected to the shielded wire.
  • the manner of connecting the USB port and the PCB in the charger may be as shown in FIG. 5 and FIG. 9 .
  • the connection between the USB port and the PCB in the charger may also be as shown in FIG. 8.
  • the metal casing of the USB port in the charger is fixed on the PCB by the fixing leg, and the ground of the fixing foot and the PCB is not connection.
  • the connection between the USB port and the PCB in the charger can also be combined in the manner of FIG. 5/FIG. 9 and FIG.
  • USB cable 630 or the USB cable 730 can be connected to the electronic device 320 in the above embodiment, which can be solved.
  • the problem of short circuit of the USB port of the electronic device The connection mode of the USB port and the PCB in the electronic device is as shown in FIG. 5 or FIG. 9 , and the USB cable 730 is used together, or the charger of the mode as shown in FIG. 5 or FIG. 8 or FIG. 9 is used in conjunction with the USB port and the PCB connection manner. It can solve the possible short circuit problem of the USB port of the electronic device and solve the problem of EMI interference to the antenna.
  • the USB cable of the embodiment of the present invention can also be used to transfer data between two electronic devices, and the USB cable is referred to FIG.
  • the USB port B of the USB cable 730 is connected to the USB port of the electronic device 320, and the USB port A of the USB cable 730 is connected to the USB port of another electronic device.
  • the metal shells of the USB cable A and the USB port B of the USB cable may not be connected to the shielded wire.
  • connection manner of the USB port and the PCB of the other electronic device may be the connection manner of the USB port and the PCB in the foregoing electronic device, as shown in FIG. 5 and FIG.
  • the description is related to FIG. 9 and will not be described here.
  • a first electronic device, a second electronic device, and a USB cable are included.
  • the USB port of the first electronic device and the PCB are connected in the manner shown in FIG. 5 or FIG. 9 or in combination with FIG. 5/FIG. 9 and FIG. 8.
  • the USB cable is in the manner of FIG.
  • the port B is connected to the first electronic device
  • the USB port A is connected to the second electronic device
  • the connection mode of the USB port of the second electronic device and the PCB is not required.
  • the first electronic device and the second The USB port of the electronic device and the PCB are connected in the manner of FIG. 5 or FIG. 9, or FIG. 5/FIG. 9 and FIG. 8, and the USB cable is not required.

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Abstract

一种电子设备，USB端口和印刷电路板，印刷电路板具有至少两层布线层，所述至少两层布线层中的第一布线层具有第一浮地区和第一浮地区以外的线路，所述第一浮地区与所述第一浮地区以外的线路之间具有绝缘介质，所述至少两层布线层中的第二布线层与所述第一布线层相邻并通过绝缘材质隔离，所述第二布线层具有第一金属区，所述第一浮地区在所述第二布线层的正投影与所述第一金属区具有重合区域，所述第一浮地区和所述第一金属区不连接；所述USB端口的金属外壳上具有多个固定脚，所述多个固定脚固定在所述印刷电路板上，所述多个固定脚与所述印刷电路板的地不连接，所述多个固定脚包括第一固定脚，所述第一固定脚与所述第一浮地区相连接，所述第一固定脚与所述第一金属区不连接。

Description

一种带USB端口的设备 技术领域
本发明涉及USB连接技术领域，尤其涉及一种带USB端口的设备。
背景技术
目前智能手机、平板电脑等电子设备上使用USB端口进行充电、数据传输等。
电子设备上通用串行总线(universal serial bus，USB)端口的金属外壳上一般设置有2个或4个固定脚11(如图1a)，电子设备上USB端口通过固定脚11固定到电子设备的印刷电路板(printed circuit board，PCB)上，一般USB端口的金属外壳通过固定脚11连接电子设备的PCB上的地(如图1b)。由于USB端口的金属外壳与USB舌片距离较近，在日常使用中汗液、灰尘颗粒等非绝缘材质堆积在USB端口的舌片和金属外壳之间，尤其是在USB外壳和舌片上的电源管脚(VBUS)之间(如图1b)，高电压、大电流的充电器连接后，会形成电源与地之间的微短路状态，这种状态无法被电子设备的过流检测机制检测到，会存在VBUS的电流路径->汗液->USB端口的金属外壳，在USB端口堆积热量，导致USB端口烧毁、甚至危急用户人身安全。
电子设备，如手机，USB端口通常设置在电子设备下部，电子设备下部一般还设置有天线。当USB端口充电或数据传输时，会对天线产生干扰。如图1c所示，目前一般采用将USB端口的金属外壳通过额外的防护器件连接到电子设备的PCB上的地。防护器件起到隔离干扰并防止微短路作用，但采用防护器件会占用电子设备的内部空间，不利于电子设备轻薄化的发展。
发明内容
本发明实施例提供了一种电子设备、USB线缆和充电器，用以防止USB端口短路以及屏蔽USB端口干扰，且不占用电子设备的内部空间。
第一方面，提供了一种电子设备，所述电子设备包括USB端口和PCB，所述PCB具有至少两层布线层，所述至少两层布线层中的第一布线层具有第一浮地区和第一浮地区以外的线路，所述第一浮地区与所述第一浮地区以外的线路之间具有绝缘介质，所述至少两层布线层中的第二布线层与所述第一布线层相邻并通过绝缘材质隔离，所述第二布线层具有第一金属区，所述第一浮地区在所述第二布线层的正投影与所述第一金属区具有重合区域，所述第一浮地区和所述第一金属区不连接；所述USB端口的金属外壳上具有多个固定脚，所述多个固定脚固定在所述PCB上，所述多个固定脚与所述PCB的地不连接，所述多个固定脚包括第一固定脚，所述第一固定脚与所述第一浮地区相连接，所述第一固定脚与所述第一金属区不连接。
电子设备的USB端口的金属外壳和PCB的地不连接，因此不会出现短路情况，并且PCB上设置了浮地区和与浮地区相对的金属区，电子设备的USB端口金属外壳连接浮地区，从而形成电容，屏蔽USB端口对天线的干扰。
结合第一方面，在第一方面的第一种实现方式中，所述第一浮地区和所述第一金属区形成的电容为
Figure PCTCN2016112792-appb-000001
s为所述第一浮地区和所述第一金属区的正对面积，d为所述第一浮地区和所述第一金属区的间距，ε为所述绝缘介质的介电常量,k为静电常量。
结合第一方面或第一方面的第一种实现方式，在第一方面的第二种实现方式中，所述PCB上具有第二浮地区，所述第二浮地区位于所述第一布线层，所述第二布线层具有第二金属区，所述第二浮地区在所述第二布线层的正投影与所述第二金属区具有重合区域，所述第二浮地区和所述第二金属区不连接；所述USB端口的所述多个固定脚包括第二固定脚，所述第二固定脚与所述第二浮地区连接，所述第二固定脚与所述第二金属区不连接。
结合第一方面或第一方面的第一种实现方式，在第一方面的第三种实现 方式中，所述至少两层布线层的第三布线层具有第三浮地区，所述至少两层布线层的第四布线层与所述第三布线层相邻且通过绝缘介质隔离，所述第四布线层中设置第三金属区，所述第三浮地区在所述第四布线层的正投影与所述第三金属区具有重合区域，所述第三浮地区和所述第三金属区不连接；所述第一固定脚与所述第一浮地区和所述第三浮地区连接，所述第一固定脚与所述第一金属区以及所述第三金属区不连接。
结合第一方面的第三种实现方式，在第一方面的第四种实现方式中，所述第一布线层和所述第三布线层不相邻。可选地，所述第一布线层和所述第三布线层的间距大于所述第一布线层和所述第二布线层的间距，且大于所述第三布线层和所述第四布线层的间距。
结合第一方面至第一方面的第四种实现方式中任一项，所述第一金属区为所述PCB的地。由此可以实现较好的噪声回流。
第二方面，提供了一种充电器，所述充电器所述充电器包括USB端口和PCB，所述USB端口具有多个固定脚，所述固定脚固定在所述PCB中，所述固定脚与所述PCB的地不连接。
结合第二方面，在第二方面的第一种实现方式中，所述PCB具有至少两层布线层，所述至少两层布线层之间通过绝缘材质隔离，所述至少两层布线层中的第一布线层具有有第一浮地区和所述第一浮地区以外的线路，所述第一浮地区与所述第一浮地区以外的线路之间具有绝缘介质，所述至少两层布线层中第二布线层与所述第一布线层相邻并通过绝缘介质隔离，第二布线层中具有第一金属区，所述第一浮地区在所述第二布线层的正投影与所述第一金属区具有重合区域，所述第一浮地区和所述第一金属区不连接；所述多个固定脚包括第一固定脚，所述第一固定脚与所述第一浮地区相连接，所述第一固定脚与所述第一金属区不连接。
结合第二方面，在第二方面的第二种实现方式中，所述PCB上具有焊盘，所述焊盘与PCB上的线路通过绝缘材质隔离；所述固定脚与所述PCB的地 不连接具体为：所述固定脚与所述焊盘相连接。
第三方面，提供了一种USB线缆，所述USB线缆包括第一USB端口、第二USB端口、屏蔽线、地线；所述屏蔽线包括第一端和第二端，所述第一端靠近所述第一USB端口，所述第二端靠近所述第二USB端口；所述第一端与所述第一USB端口的金属外壳不连接；所述屏蔽线与所述地线不连接。
结合第三方面，在第三方面的第一种实现方式中，所述第二端与所述第二USB端口的金属外壳不连接。
结合第三方面，在第三方面的第二种实现方式中，所述第二端与所述第二USB端口的金属外壳连接所述屏蔽线靠近所述第一USB端口的一端与所述第一USB端口的金属外壳连接。
第四方面，提供一种充电系统，包括如第一方面至第一方面的第五种实现方式的任一种的电子设备，如第二方面至第二方面的第二种实现方式的任一种的的充电器，以及USB线缆，所述USB线缆用于连接所述电子设备和充电器。
第五方面，提供一种充电系统，包括如第一方面至第一方面的第五种实现方式的任一种的电子设备，如第三方面至第三方面的第二种实现方式的任一种的USB线缆，以及充电器，所述USB线缆的所述第一USB端口用于连接所述充电器，所述USB线缆的所述第二USB端口用于连接所述电子设备。
第六方面，提供一种数据传输系统，包括如第一方面至第一方面的第五种实现方式的任一种的第一电子设备，如第一方面至第一方面的第五种实现方式的任一种的第二电子设备，USB线缆，所述USB线缆用于连接所述第一电子设备和所述第二电子设备。
第七方面，提供一种数据传输系统，包括如第一方面至第一方面的第五种实现方式的任一种的第一电子设备，如如第三方面至第三方面的第二种实现方式的任一种的USB线缆，以及第二电子设备，所述USB线缆的所 述第一USB端口用于连接所述第二电子设备，所述USB线缆的所述第二USB端口用于连接所述第一电子设备。
电子设备的USB端口的金属外壳和PCB的地不连接，因此不会出现短路情况，并且PCB上设置了浮地区和与浮地区相对的金属区，电子设备的USB端口金属外壳连接浮地区，从而形成电容，屏蔽USB端口对天线的干扰。
附图说明
图1a为现有技术中USB端口示意图；
图1b为现有技术中USB端口中微短路示意图；
图1c为现有技术中USB端口通过防护器件和PCB连接的示意图；
图2为本发明实施例提供的移动电话的架构示意图；
图3为本发明实施例提供的电子设备上的USB端口通过USB线缆与充电器连接示意图；
图4为本发明实施例提供的PCB剖面示意图；
图5为本发明实施例提供的电子设备上的USB端口与PCB的连接示意图；
图6a为图5中400虚线框的局部示意图；
图6b为图6a对应的一种实现方式的正视图；
图6c为图6a对应的另一种实现方式的正视图
图6d为图6a的电路等效示意图；
图7为本发明实施例中一种PCB的正视图；
图8为本发明实施例提供的电子设备上的USB端口的固定脚与PCB的连接的另一种示意图；
图9为本发明实施例提供的电子设备上的USB端口的固定脚与PCB的连接的再一种示意图；
图10为现有技术中USB线缆的示意图；
图11为本发明实施例USB线缆的一种示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行描述。
电子设备可以是移动电话(又称智能手机)、平板电脑(Tablet Personal Computer)、个人数字助理(personal digital assistant，简称PDA)、电子书阅读器(英文：e-book reader)或可穿戴式设备(Wearable Device)、虚拟现实交互设备(Virtual Reality Interactive Device)等，所述电子设备可以通过2G(第二代手机通信技术规格)、3G(第三代手机通信技术规格)、4G(第四代手机通信技术规格)、5G(第五代手机通信技术规格)或W-LAN(无线局域网)或今后可能出现的通信方式与网络建立通信。
为了方便说明，以移动电话为例进行电子设备的结构说明。
图2示出根据一些实施例提供的一种移动电话100的结构示意图。所述移动电话能够支持多种应用，譬如，电话应用、即时消息收发应用、数码拍照和/或摄像应用、网络浏览应用、音乐和/或视频播放应用、视频通信应用、社交网络应用、金融财经应用、天气应用、购物应用、办公应用等。
图2示出的是根据一些实施例提供的移动电话100的部分结构的框图。参考图2，移动电话100包括RF(Radio Frequency，射频)电路110、存储器120、输入单元130、显示单元140、传感器150、音频电路160、USB端口170、处理器180、以及电源190等部件。
本领域技术人员可以理解，图2中示出的移动电话结构只做实现方式的举例，并不构成对移动电话的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
下面结合图2对移动电话100的各个构成部件进行具体的介绍：
RF电路110可用于收发信息或通话过程中，信号的接收和发送，特别地，将基站的下行信息接收后，给处理器180处理；另外，将设计上行的数据发送给基站。通常，RF电路包括但不限于天线、至少一个放大器、收发信机、耦合器、LNA(Low Noise Amplifier，低噪声放大器)、双工器等。此外，RF电路110还可以通过无线通信与网络和其他设备通信。所述无线通信可以使用任一通信标准或协议，包括但不限于GSM(Global System of Mobile communication，全球移动通讯系统)、GPRS(General Packet Radio Service，通用分组无线服务)、CDMA(Code Division Multiple Access，码分多址)、WCDMA(Wideband Code Division Multiple Access,宽带码分多址)、LTE(Long Term Evolution,长期演进)、电子邮件、SMS(Short Messaging Service，短消息服务)等。
存储器120可用于存储软件程序以及模块，处理器180通过运行存储在存储器120的软件程序以及模块，从而执行移动电话100的各种功能应用以及数据处理。存储器120可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等；存储数据区可存储根据移动电话100的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器120可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
输入单元130可用于接收输入的数字或字符信息，以及产生与移动电话100的用户设置以及功能控制有关的键信号或动作信号输入。具体地，输入单元130可包括触控面板131、摄像头132以及其他输入设备132中的一种或几种。触控面板131，可以是触控显示屏或触摸板，其中，触控显示屏是集成显示屏与触摸区的设备，触摸板是与触控显示屏不同的不显示可视输出的设备的触摸敏感区，触摸板可以是与显示面板分离的触摸敏 感表面或触摸屏形成的触摸敏感表面的延伸部分，触控面板131可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板131上或在触控面板131附近的操作)，并根据预先设定的程式驱动相应的连接装置。可选的，触控面板131可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标，再送给处理器180，并能接收处理器180发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板131。摄像头132，可以是一个或多个模拟摄像头、数字摄像头、深度摄像头、也可以是由上述任几种不限数量的组合，摄像头132可收集视频信号，并将视频信号传送给处理器180，以由处理器180从视频信号中采集输入信号(比如从视频信号中识别用户的手势操作)。除了触控面板131和摄像头132，输入单元130还可以包括其他输入设备133。具体地，其他输入设备133可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆、脑电波识别仪、陀螺仪等中的一种或多种，此外，输入单元130可覆盖到麦克风162、传感器150等，在一些实施例中，麦克风162可收集音频信号，并将音频信号传送给处理器，以由处理器从音频信号中采集输入信号(比如从音频信号中识别用户的语音操作)等。
显示单元140可用于显示由用户输入的信息或提供给用户的信息以及移动电话100的各种菜单。显示单元140可包括显示面板141、投影设备142或其他显示设备143中的一种或几种，可选的，可以采用LCD(Liquid Crystal Display，液晶显示器)、OLED(Organic Light-Emitting Diode,有机发光二极管)等形式来配置显示面板141。进一步的，触控面板131可覆盖显示面板141，当触控面板131检测到在其上或附近的触摸操作后，传送给处理器180以确定触摸事件的类型，随后处理器180根据触摸事件 的类型在显示面板141上提供相应的视觉输出。虽然在图2中，触控面板131与显示面板141是作为两个独立的部件来实现移动电话100的输入和输入功能，但是在某些实施例中，可以将触控面板131与显示面板141集成而实现移动电话100的输入和输出功能。投影设备142，可以是微型投影仪或3D全息投影仪，其中，微型投影仪可以是安装于智能眼镜设备、并通过半透明棱镜将图像投射在人眼视网膜上进行成像的设备，微型投影仪还可以是通过投影在移动电话的显示屏、显示幕进行成像的设备。3D(三维)全息投影仪可利用干涉和衍射原理直接投影在实体空间中以呈现物体真实的三维图像的设备。除了显示面板141和投影设备142，显示单元140还可以包括其他显示设备142。具体地，其他显示设备142可以包括但不限于，通过无线局域网、USB数据线(Universal Serial Bus，通用串行总线)、HDMI(High Definition Multimedia Interface，高清晰度多媒体接口)线缆等中的一种或多种连接方式与移动电话相连的显示设备(比如电视等等)。
移动电话100还可包括至少一种传感器150，比如光传感器、运动传感器以及其他传感器。具体地，光传感器可包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示面板141的亮度，接近传感器可在移动电话100移动到耳边时，关闭显示面板141和/或背光。作为运动传感器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别移动电话的姿态的应用(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；至于移动电话100还可配置的陀螺仪、气压计、湿度计、温度计、红外线传感器等其他传感器，在此不再赘述。
音频电路160、扬声器161，麦克风162可提供用户与移动电话100之间的音频接口。音频电路160可将接收到的音频数据转换后的电信号， 传输到扬声器161，由扬声器161转换为声音信号输出；另一方面，麦克风162将收集的声音信号转换为电信号，由音频电路160接收后转换为音频数据，再将音频数据输出处理器180处理后，经RF电路110以发送给比如另一移动电话，或者将音频数据输出至存储器120以便进一步处理。
通用串行总线(USB，Universal Serial Bus)端口用于与外部设备进行通信或者充电。移动电话100通过USB端口170可以其他USB设备进行数据传输，或者通过USB端口170实现充电功能等。
处理器180是移动电话100的控制中心，利用各种接口和线路连接整个移动电话的各个部分，通过运行或执行存储在存储器120内的软件程序和/或模块，以及调用存储在存储器120内的数据，执行移动电话100的各种功能和处理数据，从而对移动电话进行整体监控。可选的，处理器180可包括一个或多个处理单元；优选的，处理器180可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器180中。
移动电话100还包括给各个部件供电的电源190(比如电池)，优选的，电源可以通过电源管理系统与处理器180逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。
移动电话100可以具有壳体(未示出)。壳体，也可被称为机壳，可由任意适合的材料形成，包括塑料、玻璃、陶瓷、金属、或其它适合材料、或这些材料的组合。在一些实施方式中，壳体或壳体的若干部分可由电介质或其它低导电性材料形成；从而不会干扰位于壳体附近的导电天线元件的工作。壳体或壳体的若干部分还可由导电材料(例如金属)形成。由金属元件形成壳体的情况，一个或多个金属元件可被用作移动电话100中的天线的一部分，如辐射体或地。
尽管未示出，移动电话100还可以包括摄像头、蓝牙模块等，在此不 再赘述。
在本发明的实施例中，对所述USB端口类型的类型不做限定，可以包括C型(USB Type-C)端口和A型(USB Type-A)端口，以及B型(USB Type-B)端口等。
图3示出电子设备通过USB线缆连接充电器的示意图。电子设备320和充电器310通过USB线缆330连接。
图3中USB线缆包括两个端口USB端口A和USB端口B，其中USB线缆330的USB端口A连接充电器310，USB线缆330的USB端口B连接电子设备的USB端口。USB线缆330的USB端口B的金属壳334b和电子设备的USB端口的金属外壳322相接触，USB线缆330的B端的塑料外壳335b用于抵接在电子设备320的外壳上，固定和保护USB线缆330的USB端口B。USB线缆330中包括电源线331，地线332，数据线等(图中未示出)，电源线331连通充电器的电源管脚和电子设备的USB端口的电源管脚，地线332连通充电器的地管脚和电子设备的USB端口的地管脚，从而执行充电。
以下为本发明实施例中电子设备320的USB端口的金属外壳322固定在电子设备的印刷电路板(printed circuit board，PCB)上的方式，本实施例中USB端口的金属外壳322不连接PCB的地。
PCB一般具有一层或一层以上的布线层，如2层、4层、6层等，布线层之间通过绝缘介质隔离，绝缘介质可以为FR-4的材料，布线层上具有线路，线路是做为原件之间导通的工具，还有接地及电源等。线路一般为铜箔，锡等导电金属材质制成，每层布线层可根据电子设备的设计需求进行线路布线，位于在不同布线层的线路根据设计需要可通过导通孔连接，比如各布线层上的地线可以通过导通孔连接。本发明实施例中的PCB至少具有两层布线层，如图4为本发明实施例一种PCB的剖面示意图，PCB具有布线层211,212,213,214,4层布线层之间通过绝缘介质215隔离。布线层上线路以外的区域是绝缘介质，线路之间通过绝缘介质隔离。
PCB上多层布线层中至少一层布线层具有浮地区，所述浮地区可以和布线层的线路相同材质，比如铜箔。所述浮地区与同层的其他线路通过绝缘介质隔离。所述浮地区的相邻布线层中具有金属区，所述金属区和所述浮地区相对，即所述金属区和所述浮地区在所述金属区所在的布线层上的正投影有重合部分。以所述金属区所在的布线层的平面为第一平面，所述浮地区在所述金属区所在的布线层上的正投影指的是用一组垂直于所述第一平面的光线将浮地区的形状投射到所述第一平面上去得到的浮地图像，所述金属区和所述浮地区在所述金属区所在的布线层上的正投影有重合部分，即所述金属区和所述浮地图像在所述第一平面上有位置重合的部分。所述浮地区和所述金属区不相连，即没有导电介质连接。所述金属区可以为PCB的地，电源等。
多个浮地区可位于PCB的不同的布线层中，PCB的一层布线层中也具有多个浮地区。位于不同的布线层的2个浮地区相对时，且布线层之间的间距相同的话，所述2个浮地区之间间隔有布线层，即所述多个浮地区所在的布线层不相邻。
参照图4，浮地区可以设置在布线层211中，与浮地区相对的金属区设置在布线层212中。或者浮地区可以设置在布线层212中，与浮地区相对的金属区则可设置在布线层211或213中。浮地区可以为多个，比如布线层211和214中分别设置浮地区，与浮地区相对的金属区则可设置在布线层212和213中。若在布线层212和213中各设置一个浮地区，则与浮地区相对的金属区可以分别设置在布线层211和214中，若两个浮地区相对(即布线层212中的浮地区在布线层213中的正投影和布线层213中的浮地区有重合区域)，则要求布线层212和213之间的间距d2大于布线层211和212之间的间距d1，d2也大于布线层213和214之间的间距d3，这样浮地区和与浮地区相对的金属区才能形成电容；若两个浮地区不相对，d1，d2和d3可没有这个要求。
PCB上通常固定有一个USB端口，一个USB端口的金属外壳上通常具有2-4个固定脚。该USB端口的多个固定脚可以连接同一个金属浮地区，也可以 分别连接位于相同布线层的不同的浮地区，每个固定脚的浮地区可以不相同。
所述USB端口与PCB固定的方式可以为贴片方式，或插脚固定方式等。
所述贴片方式为，USB端口的固定脚采用粘贴方式和PCB的表面的固定脚连接点连接，所述连接点为焊点。采用这种方式时，若USB端口的一个固定脚连接位于PCB的不同布线层中的多个浮地区时，所述多个浮地区可通过导通孔连接，PCB上设置有固定脚的连接点，所述固定脚的连接点设置在PCB的表层的浮地区中，或与PCB的浮地区通过导通孔或走线连接。这样当USB端口的固定脚与位于PCB的连接点连接时，所述USB端口的固定脚可以与所述多个浮地区相连接。
所述插脚固定方式为，USB端口的固定脚插入PCB的连接点中，所述连接点为连接孔，固定脚焊接固定在所述连接孔中，连接孔贯穿多层布线层。采用这种方式时，若USB端口的一个固定脚连接位于PCB的不同布线层中的多个浮地区时，所述连接孔贯穿所述多个浮地区，固定脚插入连接孔中与所述多个浮地区连接，所述连接孔贯穿的布线层中不具有浮地区的，则通过绝缘介质和该层线路隔离；或者所述连接孔贯穿的布线层，浮地区与所述连接孔有线路相连接，所述连接孔与其他线路不连接。
根据电路设置需要，所述USB端口的多个固定脚中的部分固定脚连接PCB的浮地区，另一部分可连接PCB的焊盘，所述焊盘与PCB上的所有线路通过绝缘介质隔离。
本发明实施例中在PCB上设置有浮地区，USB端口的金属外壳的固定脚和浮地区连接形成电容的一个电极，相邻层的与所述浮地区相对的金属区形成该电容的另一电极，由此可以在PCB上形成电容。电子设备，如手机，USB端口通常设置在电子设备下部，电子设备下部一般还设置有天线。当USB端口充电或数据传输时，会对天线产生干扰。PCB上通过浮地区和相邻层的与浮地区相对的金属区形成的电容，可以屏蔽USB端口对天线的干扰。
具体地，电容和干扰频点F的关系为
Figure PCTCN2016112792-appb-000002
C为电容，干扰频 点F为USB端口产生的对射频信号有干扰的频点，Xc为特性阻抗，Xc电路设计降噪需求设定。当存在多个干扰频点F时，则可设置多个电容C，即设置多个浮地区。
电容C还可根据公式
Figure PCTCN2016112792-appb-000003
估算得出，其中F为干扰频点，L为设定值，由此估算出电容C。
两个位于相对且连接不同电极的金属板形成的电容，可根据计算公式为
Figure PCTCN2016112792-appb-000004
进行计算得出，其中ε为介电常量，s为电极的正对面积，d为电极间距，k为静电力常量,k＝9.0×10^9N·m2/C2。对于PCB中，浮地区和与浮地区相对的金属形成的电容，介电常量ε的值由PCB上绝缘介质的材料类型决定，s为浮地区和金属区的正对面积，电极间距d具体为浮地区和金属区的间隔距离，即浮地区和金属区所在布线层的间隔。由此可以根据需求的电容设计PCB上浮地区和与浮地区相对的金属区的正对面积、布线层的间距、绝缘介质的材料。比如需求电容是33PF，PCB的层间距离为0.1mm，绝缘材质采用FR-4，FR-4的ε为4.2，那么计算出的s＝10.685mm2。
如图5所示为本发明实施例中电子设备中的USB端口和PCB连接的一种实现方式。图5中，以具有布线层1-8的PCB为例进行说明。布线层1-8的每一层通过绝缘介质443隔离，布线层1-8中均设置有地441，各层的地441通过导通孔442相连通。
USB端口的固定脚326a连接的USB端口固定区域的PCB中可以在布线层1,3,5,7中设置浮地区444，固定脚326b的连接的PCB区域中可以在布线层1,4,7中设置浮地区444。图5中以浮地区444同层相邻的线路是地线，相邻层相对的金属区是地线为例进行说明，实际产品中浮地区444的同层相邻的线路或相邻层的相对的金属区也可能是地线以外的线路。图5中，浮地区444与同层相邻的地441通过绝缘介质隔离，浮地区444和相邻层的地通过绝缘介质隔离，不连接。在浮地区444的相邻层的相对应的金属区设置为地，可以实现较好的噪声回流。
图5中示出了USB端口的金属外壳322的两个固定脚326a和326b，金属外壳322通过固定脚326a和326b固定在PCB440上，与PCB440上浮地区444接触。电子设备中PCB440通常为一块PCB，图5中所示的是PCB上与USB端口固定的部分PCB的剖视图。
USB端口的部分固定脚和PCB的固定方式也可以如图8所示，固定脚326c通过通孔745固定在PCB上。通孔745和地线441不连接。
由于USB端口的金属外壳322和PCB440的地不连接。当通过USB端口进行充电时，电源管脚--汗液—USB端口的金属外壳形成不了电流路径，因此不会发生热量累积，烧坏USB端口的情况。
如图6a所示为图5中虚线部分400的示意图，浮地区444和相邻布线层的地441形成电容，正对面积s为浮地区444正投影到所述相邻布线层上与地相重合的面积。如图6b所示是图6a的一种可能的实现方式，正对面积s为浮地区444的面积减去不重合区域450的面积。如图6c所示是图6a的另一种可能的实现方式，正对面积s为浮地区444的面积减去不重合区域451的面积，不重合区域451足够小的话，可以考虑忽略不计。电极间距d为浮地区444和地441之间的间距(如图6a所示)。由此形成电容如图6d所示。
如图7所示是本发明实施例中PCB中一层布线层的布线示意图，USB端口的电源脚焊点661、数据脚焊点662和663、地焊点664、浮地区444、地441、其他线路665设置一层布线层上，除了线路以外是绝缘介质443，浮地区444与相邻的地线441隔离浮地区444和其他线路665隔离，浮地区444设有和USB端口的固定脚相连接的十字型走线，十字型走线也可以是米字型走线，或其他方式的走线。
如图9是本发明实施例中电子设备中的USB端口和PCB连接的另一种实现方式，PCB具有布线层1-6，图9中网格所示为浮地区，灰色为其他线路，浮地区设置在布线层1、3、4、5中。USB端口的固定脚901和902可以连接同一个浮地区(如布线层1中的浮地区)。布线层4和5中的浮地区相对， 布线层4和5的间距大于布线层3和4的间距，也大于布线层5和6的间距。
以上描述的是本发明实施例中电子设备中USB端口固定在PCB上的实施方式。为了防止USB端口短路发生，需要有相应的USB线缆或充电器。
现有技术中的充电器和USB线缆如图10所示，充电器610的USB端口的金属外壳612通过固定脚连接充电器610的地，USB线缆630中包括电源线631，地线632，屏蔽线633，数据线等(图中未示出)，电源线631和地线632如前所述电源线331和地线332用于连接电子设备和充电器实现充电，数据线用于传输数据，在制造时，屏蔽线633与USB线缆630的两个USB端口的金属壳634a和634b压制在一起，因此屏蔽线633和金属壳634a、634b连接。由此可见，现有技术中充电器610的USB端口和USB线缆630的USB端口A连接时，充电器610的USB端口的金属外壳612和USB线缆的USB端口A的金属壳634a连接，这样屏蔽线633接地，从而USB线缆的USB端口B的金属壳634b也接地，当USB线缆630的USB端口B和电子设备的USB端口连接时，电子设备的USB端口的金属外壳也会接地，仍会导致背景技术中描述的短路的情况。
本发明实施例中的USB线缆如图11所示，USB线缆730中包括电源线731，地线732，屏蔽线733，数据线等(图中未示出)，电源线731和地线732用于连接电子设备和充电器实现充电，数据线用于传输数据。屏蔽线733与USB线缆330的USB端口B的金属壳734b连接，屏蔽线733和USB线缆上的USB端口A的金属壳734a不连接。
当上述USB线缆730的USB端口A连接图10中的充电器610的USB端口，USB线缆730的USB端口B连接电子设备320的USB端口时，因USB线缆的屏蔽线733靠近USB端口A侧没有和USB端口A的金属壳连接，即使充电器610的USB端口的金属外壳612接地，屏蔽线733也不会接地，因此电子设备320的USB端口的金属外壳322不接地，由此可以防止电子设备USB端口短路情况的发生。
可选地,USB线缆的USB端口A和USB端口B的金属壳都可以不与屏蔽线连接。
可选地，充电器中USB端口和PCB的连接方式可采用如图5和图9所示方式，具体可以参照图5和图9相关描述，此处不再赘述。可选地，充电器中的USB端口和PCB的连接方式还可采用如图8所示方式，充电器中的USB端口的金属外壳通过固定脚固定在PCB上，固定脚和PCB的地4不连接。充电器中的USB端口和PCB的连接方式还可采用图5/图9和图8的组合方式。
作为一个充电系统，包括电子设备，充电器和USB线缆。充电器中USB端口和PCB的连接方式采用如图5/图9方式或如图8方式时，可采用USB线缆630或USB线缆730与上述实施例中的电子设备320连接，都可以解决电子设备USB端口短路的问题。电子设备中USB端口和PCB的连接方式采用如图5或图9的方式，配合使用USB线缆730，或配合USB端口和PCB连接方式采用如图5或图8或图9方式的充电器，可解决电子设备USB端口可能的短路问题，并能解决对天线的EMI干扰问题。
本发明实施例的USB线缆还可用于两个电子设备之间传输数据，所述USB线缆参照图11。USB线缆730的USB端口B连接电子设备320的USB端口，USB线缆730的USB端口A连接另一电子设备的USB端口。可选地,USB线缆的USB端口A和USB端口B的金属壳都可以不与屏蔽线连接。
可选地，所述另一电子设备的USB端口和PCB的连接方式可采用前述电子设备中USB端口和PCB的连接方式，如可采用如图5和图9所示方式，具体可以参照图5和图9相关描述，此处不再赘述。
作为一个数据传输系统，包括第一电子设备，第二电子设备，和USB线缆。第一种可选方式，第一电子设备的USB端口和PCB的连接方式采用图5或图9，或者图5/图9与图8组合的方式，USB线缆采用如图11的方式，USB端口B连接第一电子设备，USB端口A连接第二电子设备，第二电子设备的USB端口和PCB的连接方式没有要求。第二种可选方式，第一电子设备和第二 电子设备的USB端口和PCB的连接方式采用图5或图9，或者图5/图9与图8组合的方式，USB线缆没有要求。

Claims (16)

  1. 一种电子设备，其特征在于：所述电子设备包括通用串行总线(universal serial bus，USB)端口和印刷电路板，
    所述印刷电路板具有至少两层布线层，所述至少两层布线层中的第一布线层具有第一浮地区和第一浮地区以外的线路，所述第一浮地区与所述第一浮地区以外的线路之间具有绝缘介质，所述至少两层布线层中的第二布线层与所述第一布线层相邻并通过绝缘材质隔离，所述第二布线层具有第一金属区，所述第一浮地区在所述第二布线层的正投影与所述第一金属区具有重合区域，所述第一浮地区和所述第一金属区不连接；
    所述USB端口的金属外壳上具有多个固定脚，所述多个固定脚固定在所述印刷电路板上，所述多个固定脚与所述印刷电路板的地不连接，所述多个固定脚包括第一固定脚，所述第一固定脚与所述第一浮地区相连接，所述第一固定脚与所述第一金属区不连接。
  2. 如权利要求1所述电子设备，其特征在于，所述第一浮地区和所述第一金属区形成的电容为
    Figure PCTCN2016112792-appb-100001
    s为所述第一浮地区和所述第一金属区的正对面积，d为所述第一浮地区和所述第一金属区的间距，ε为所述绝缘介质的介电常量,k为静电常量。
  3. 如权利要求1或2所述电子设备，其特征在于，所述印刷电路板上具有第二浮地区，所述第二浮地区位于所述第一布线层，所述第二布线层具有第二金属区，所述第二浮地区在所述第二布线层的正投影与所述第二金属区具有重合区域，所述第二浮地区和所述第二金属区不连接；
    所述USB端口的所述多个固定脚包括第二固定脚，所述第二固定脚与所述第二浮地区连接，所述第二固定脚与所述第二金属区不连接。
  4. 如权利要求1或2所述电子设备，其特征在于，所述至少两层布线层的第三布线层具有第三浮地区，所述至少两层布线层的第四布线层与所述第三布线层相邻且通过绝缘介质隔离，所述第四布线层中设置第三金属 区，所述第三浮地区在所述第四布线层的正投影与所述第三金属区具有重合区域，所述第三浮地区和所述第三金属区不连接；
    所述第一固定脚与所述第一浮地区和所述第三浮地区连接，所述第一固定脚与所述第一金属区以及所述第三金属区不连接。
  5. 如权利要求4所述电子设备，其特征在于，所述第一布线层和所述第三布线层不相邻。
  6. 如权利要求1-5任一项所述电子设备，其特征在于，所述第一金属区为所述印刷电路板的地。
  7. 一种充电器，其特征在于：所述充电器包括通用串行总线(universal serial bus，USB)端口和印刷电路板，
    所述USB端口具有多个固定脚，所述固定脚固定在所述印刷电路板中，所述固定脚与所述印刷电路板的地不连接。
  8. 如权利要求7所述充电器，其特征在于，所述印刷电路板具有至少两层布线层，所述至少两层布线层之间通过绝缘材质隔离，所述至少两层布线层中的第一布线层具有有第一浮地区和所述第一浮地区以外的线路，所述第一浮地区与所述第一浮地区以外的线路之间具有绝缘介质，所述至少两层布线层中第二布线层与所述第一布线层相邻并通过绝缘介质隔离，第二布线层中具有第一金属区，所述第一浮地区在所述第二布线层的正投影与所述第一金属区具有重合区域，所述第一浮地区和所述第一金属区不连接；
    所述多个固定脚包括第一固定脚，所述第一固定脚与所述第一浮地区相连接，所述第一固定脚与所述第一金属区不连接。
  9. 如权利要求7所述充电器，其特征在于，所述印刷电路板上具有焊盘，所述焊盘与印刷电路板上的线路通过绝缘材质隔离；
    所述固定脚与所述印刷电路板的地不连接具体为：所述固定脚与所述焊盘相连接。
  10. 一种通用串行总线(universal serial bus，USB)线缆，其特征在于，所述USB线缆包括第一USB端口、第二USB端口、屏蔽线、地线；
    所述屏蔽线包括第一端和第二端，所述第一端靠近所述第一USB端口，所述第二端靠近所述第二USB端口；
    所述第一端与所述第一USB端口的金属外壳不连接；
    所述屏蔽线与所述地线不连接。
  11. 如权利要求10所述USB线缆，其特征在于，所述第二端与所述第二USB端口的金属外壳不连接。
  12. 如权利要求10所述USB线缆，其特征在于，所述第二端与所述第二USB端口的金属外壳连接。
  13. 一种充电系统，其特征在于，包括如权利要求1-6任一项的电子设备，如权利要求7-9任一项的充电器，以及USB线缆，所述USB线缆用于连接所述电子设备和充电器。
  14. 一种充电系统，其特征在于，包括如权利要求1-6任一项的电子设备，如权利要求10-12任一项的USB线缆，以及充电器，所述USB线缆的所述第一USB端口用于连接所述充电器，所述USB线缆的所述第二USB端口用于连接所述电子设备。
  15. 一种数据传输系统，其特征在于，包括如权利要求1-6任一项的第一电子设备，如权利要求1-6任一项的第一电子设备，以及USB线缆，所述USB线缆用于连接所述第一电子设备和所述第二电子设备。
  16. 一种数据传输系统，其特征在于，包括如权利要求1-6任一项的第一电子设备，如权利要求10-12任一项的USB线缆，以及第二电子设备，所述USB线缆的所述第一USB端口用于连接所述第二电子设备，所述USB线缆的所述第二USB端口用于连接所述第一电子设备。
PCT/CN2016/112792 2016-12-08 2016-12-28 一种带usb端口的设备 WO2018103158A1 (zh)

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EP3544126B1 (en) 2021-09-22
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US10997109B2 (en) 2021-05-04
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