WO2011017983A1 - Usb接口设备和终端设备 - Google Patents

Usb接口设备和终端设备 Download PDF

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Publication number
WO2011017983A1
WO2011017983A1 PCT/CN2010/074296 CN2010074296W WO2011017983A1 WO 2011017983 A1 WO2011017983 A1 WO 2011017983A1 CN 2010074296 W CN2010074296 W CN 2010074296W WO 2011017983 A1 WO2011017983 A1 WO 2011017983A1
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WO
WIPO (PCT)
Prior art keywords
usb interface
interface device
usb
frame
pin
Prior art date
Application number
PCT/CN2010/074296
Other languages
English (en)
French (fr)
Inventor
张霞玲
李春澍
Original Assignee
华为终端有限公司
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 华为终端有限公司 filed Critical 华为终端有限公司
Priority to EP10807928.6A priority Critical patent/EP2432080B1/en
Publication of WO2011017983A1 publication Critical patent/WO2011017983A1/zh
Priority to US13/338,715 priority patent/US8342882B2/en

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Classifications

    • 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
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
    • H01R12/725—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits containing contact members presenting a contact carrying strip, e.g. edge-like strip

Definitions

  • USB interface device and terminal device The present application claims to be filed on August 12, 2009, the Chinese Patent Office, the application number is CN 200920171219. 2. The priority of the Chinese patent application entitled “USB interface device and terminal device", all of which are The content is incorporated herein by reference. TECHNICAL FIELD The present invention relates to the field of electromagnetic interference technology, and more particularly to a USB interface device and a terminal device having electromagnetic interference protection functions. Background technique
  • USB Universal Serial Bus
  • USB 2.0 the transmission rate has reached 480MB/s (megabits per second), and the transmission of the future USB3.0 standard is achieved. The rate will be higher.
  • the USB interface has been widely used as an interface for data transmission, and many data cards are also connected to a computer through a USB interface. As shown in FIG.
  • the pin 2 of the existing USB connector 1 is directly soldered on the pad of the PCB (printed circuit board) 3, and the four pins 2 of the USB connector 1 (including two power pins) Both the data pins and the two data pins are exposed to the outside of the PCB (printed circuit board) 3; since the USB connector 1 needs to transmit data at a high rate, such high-rate data transmission generates electromagnetic radiation.
  • a data card ie, a wireless modem
  • EMI Electro Magnetic Interference
  • the wireless performance of the data card is degraded, which directly affects the wireless performance of the whole machine; and the greater the data transmission rate of the USB interface, the more serious the electromagnetic interference is generated, so the higher transmission rate of the future USB 3.0 standard will cause more serious Electromagnetic interference. Summary of the invention
  • Embodiments of the present invention provide a USB interface device and a terminal device that shield electromagnetic interference generated by a USB connector due to data transmission.
  • a USB interface device includes a USB connector electrically connected to a circuit board through a pin, the USB interface device further comprising a shielding frame attached to the USB connector and the circuit board connection and covering the pin;
  • the shielding frame is a frame having a first open opening at a portion that is bonded to the circuit board and a second open opening at a portion that is bonded to the USB connector.
  • a terminal device comprising the USB interface device according to any one of claims 1 to 6, and an access module;
  • the access module is configured to implement wireless access to the network by the terminal device.
  • the USB interface device and the terminal device provided by the embodiment of the present invention have electromagnetic shielding generated by the pin at the USB connector when the USB interface transmits the data at a high rate due to the shielding frame covering the pin at the connection between the USB connector and the PCB. Radiation, the electromagnetic radiation can also be shielded by the shielding frame, so that the electromagnetic radiation generated by the pins at the USB connector does not cause electromagnetic interference to the wireless communication. If the solution is applied to a device that requires wireless communication, such as a data card of a USB interface, electromagnetic interference can be shielded and the performance of the whole machine can be improved. Even if the transmission speed of the USB interface is higher, it will not cause electromagnetic interference to the wireless communication, which is also ready for the USB interface transmission rate to be further improved.
  • FIG. 1 is a structural diagram of a connection between a USB connector and a PCB in the prior art
  • FIG. 2 is a structural diagram of a shielding frame according to an embodiment of the present invention.
  • FIG. 3 is a structural view of a shielding frame and a shielding cover according to an embodiment of the present invention.
  • FIG. 4 is another structural diagram of a shielding cover according to an embodiment of the present invention.
  • FIG. 5 is an effect diagram of the assembly completion of the embodiment of the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • the USB interface device includes a USB connector 6 electrically connected to the PCB 5 via a pin 4, the pins 4 including two power pins and two data pins, and may be soldered Mode connection To the PCB 5, the USB interface device further includes a shield frame 7 that is attached to the USB connector 6 and the PCB 5 connection and covers the pin 4.
  • the USB interface transmits data at a high rate
  • the pin 4 at the USB connector 6 generates electromagnetic radiation, and the electromagnetic radiation is shielded by the shielding frame 7, so that the electromagnetic radiation generated by the pin 4 at the USB connector 6 is not Will cause electromagnetic interference to wireless communications.
  • the USB interface here can be a USB A type male port.
  • the shielding frame 7 may be a hexahedral frame 8 having two faces that need to be attached to the PCB 5 and the USB connector 6, respectively, and All or part of the surface of the frame 8 to which the PCB 5 is attached is provided as an open opening, and all or part of the surface to which the USB connector 6 is attached is provided as an open opening.
  • the open opening of the frame 8 disposed at a portion that is in contact with the PCB 5 is referred to as a first open opening, and the open opening of the frame at a portion that is attached to the USB connector 6 is referred to as a second open opening.
  • the shielding frame 7 may not be a hexahedron-shaped frame 8.
  • the portion of the shielding frame 7 that is not in contact with the PCB 5 or the portion that is not attached to the USB connector 6 is set as a curved surface. .
  • an observation window 9 for observing the pin 4 may be provided on the frame 8 for observing the pin.
  • the embodiment of the present invention can also cover a shielding cover 10 on the outer side of the shielding frame 11, and the shape structure of the shielding frame 11 can be described in FIG.
  • the structure of the shield frame 7 is identical.
  • the shield cover 10 of Fig. 3 needs to be fixed together with the shield frame 11 to prevent misalignment.
  • the embodiment of the present invention can fix the shield cover 10 and the shield frame 11 by using, but not limited to, the following:
  • At least one limiting hole 12 is disposed on the shielding frame 11, and a limiting protrusion 13 corresponding to the limiting hole is disposed on the shielding cover 10, After the limiting protrusion 13 is inserted into the limiting hole 12, the shielding frame 11 and the shielding cover 10 can be positioned to ensure that there is no misalignment between the two.
  • At least one limiting protrusion is disposed on the shielding frame 11 , which is not shown in the structural diagram, and a limiting hole corresponding to the limiting protrusion is disposed on the shielding cover 10 , After the limiting protrusion is inserted into the limiting hole, the shielding frame and the shielding cover can be positioned to ensure that there is no misalignment between the two.
  • the limiting protrusion can be formed by stamping. This pressing process can quickly punch out the limiting protrusion, improve production efficiency and reduce production. cost.
  • fixing the shielding cover 10 to the shielding frame 11 may also be a bolt, a screw connection, a pasting connection or the like.
  • the USB device adopts the shielding mode corresponding to Figure 2 or Figure 3, which is enough to complete the basic functions.
  • the USB interface device further includes another PCB board, that is, the second PCB 14, in order to be able to fix the second PCB 14, the embodiment of the present invention is provided with a fixing hole 15 on the second PCB 14. And a fixing pin 16 corresponding to the fixing hole 15 is provided on the shielding cover, and the fixing pin 16 is inserted into the fixing hole 15 to fix the second PCB 14.
  • the structure of the other parts of the shielding cover and the structure of the shielding frame can adopt the scheme of FIG. 3, and the effects of assembling all the PCBs, the shielding frame, the shielding cover and the USB connector are as shown in FIG. 5.
  • the embodiment of the present invention further provides a terminal device, where the terminal device adopts the technical solution of the USB interface device in FIG. 2 to FIG. 5, and the terminal device further includes an access module (not shown).
  • the ingress module is configured to implement the wireless access network of the terminal device.
  • the access module may be a WIFI access module, a 3G access module, or the like.
  • the terminal device may be a data card.
  • the data card is connected to the USB interface of the computer through the USB interface device, and the data card is used to implement wireless access to the network by the computer through the data card.
  • the embodiments of the present invention are mainly used in various devices using a USB interface, especially in a wireless communication device using a USB interface.
  • the USB interface device provided by using the new embodiment may be used in various terminal devices, and the terminal device may be various fixed terminals or mobile terminals having a USB interface, for example, a data card with a USB interface, and 3G data. Cards, mobile phones, etc.; in addition, the antenna device can also be used in various mobile devices or portable devices with USB interfaces, for example, MP3 players with USB interface, MP4 players, PSP (PlayStation Portable, portable game stations) , digital cameras, USB flash drives, etc.
  • the 3G data card refers to a device that is applied to a computer and uses the third generation mobile communication technology to access the Internet.

Landscapes

  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Description

USB接口设备和终端设备 本申请要求于 2009年 08月 12日提交中国专利局、 申请号为 CN 200920171219. 2、 发明名称为 "USB接口设备和终端设备"的中国专利申请的优先权， 其全部内容通过引 用结合在本申请中。 技术领域 本发明涉及电磁干扰技术领域，尤其涉及具有电磁干扰防护功能的 USB接口设备和 终端设备。 背景技术
USB (Universal Serial Bus , 通用串行总线）接口标准逐渐发展， 传输速率不断 提高， 以 USB2. 0标准来看， 传输速率已达到 480MB/S (兆每秒）， 未来的 USB3. 0标准的 传输速率会更高。 目前 USB接口作为数据传输的接口已经被广泛应用， 很多数据卡也是 通过 USB接口连接到计算机。如图 1所示， 现有的 USB连接器 1的管脚 2是直接焊接在 PCB (印刷电路板） 3的焊盘上， USB连接器 1上 4个管脚 2 (包括两个电源管脚和两个 数据管脚）都暴露在 PCB (印刷电路板） 3的外面； 由于 USB连接器 1上需要以高速率 传输数据， 这种高速率的数据传输会产生电磁辐射。
发明人发现现有技术中至少存在如下问题： 在数据卡（即无线调制解调器）也是通 过 USB接口连接到计算机的情况下， USB接口产生的电磁辐射对数据卡产生电磁干扰 (EMI , Electro Magnetic Interference ), 造成数据卡的无线性能下降， 直接影响整 机无线性能； 并且 USB接口的数据传输速率越大， 其产生的电磁干扰越严重， 故而未来 的 USB3. 0标准更高的传输速率会造成更严重的电磁干扰。 发明内容
本发明的实施例提供一种 USB接口设备和终端设备，屏蔽 USB连接器因数据传输而产 生的电磁干扰。
为达到上述目的， 本发明的实施例采用如下技术方案：
一种 USB接口设备， 包括通过管脚与电路板电连接的 USB连接器， 所述 USB接口设备 还包括贴合到所述 USB连接器和电路板连接处并罩住所述管脚的屏蔽框； 所述屏蔽框为一框体，所述框体在与电路板贴合的部分具有第一敞开口、并在与 USB 连接器贴合的部分具有第二敞开口。
一种终端设备， 所述终端设备包括权利要求 1至 6任一项所述的 USB接口设备， 和接 入模块；
所述接入模块， 用于实现所述终端设备无线接入网络。
本发明实施例提供的 USB接口设备和终端设备， 由于在 USB连接器和 PCB连接处设有 罩住管脚的屏蔽框， USB接口以高速率传输数据时 USB连接器处的管脚产生的电磁辐射， 也可以通过该屏蔽框将该电磁辐射屏蔽住， 使得 USB连接器处的管脚产生的电磁辐射不 会造成对无线通信的电磁干扰。 如果将该方案运用到 USB接口的数据卡等需要无线通信 的设备中， 可以较好的屏蔽电磁干扰， 提升整机性能。 即使 USB接口的传输速率越来越 高也不会对无线通信造成电磁干扰，这样也为 USB接口传输速率进一步提高做好了准备。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有 技术描述中所需要使用的附图作简单地介绍， 显而易见地， 下面描述中的附图仅仅是本 发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动的前提下， 还 可以根据这些附图获得其他的附图。
图 1为现有技术中 USB连接器和 PCB连接处的结构图；
图 2为本发明实施例中屏蔽框的结构图；
图 3为本发明实施例中屏蔽框和屏蔽盖的结构图；
图 4为本发明实施例中屏蔽盖的另一种结构图；
图 5为本发明实施例装配完成的效果图。 具体实施方式 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清楚、 完 整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是全部的实施例。 基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所 有其他实施例， 都属于本发明保护的范围。
本发明实施例如图 2所示，该 USB接口设备包括通过管脚 4与 PCB 5电连接的 USB 连接器 6， 这些管脚 4包括两个电源管脚和两个数据管脚， 并且可以采用焊接方式连接 到 PCB 5上， 该 USB接口设备还包括贴合到所述 USB连接器 6和 PCB 5连接处并罩住所 述管脚 4的屏蔽框 7。 USB接口以高速率传输数据时， USB连接器 6处的管脚 4产生电磁 辐射， 通过该屏蔽框 7可以将该电磁辐射屏蔽住， 使得 USB连接器 6处的管脚 4产生的 电磁辐射不会造成对无线通信的电磁干扰。即使 USB接口的传输速率越来越高也不会对 无线通信造成电磁干扰， 这样也为 USB接口传输速率进一步提高做好了准备。 其中， 这 里的 USB接口可以是 USB A型公口。
如图 2所示，一般情况下， 屏蔽框 7可以是六面体形状的框体 8， 该六面体形状的 框体 8有两个面分别需要贴合到 PCB 5与 USB连接器 6上， 并且将该框体 8与 PCB 5贴 合的面的全部或部分设置为敞开口，与 USB连接器 6贴合的面的全部或部分设置为敞开 口。 其中， 所述框体 8在与 PCB 5贴合的部分所设置的敞开口称为第一敞开口， 所述框 体在与 USB连接器 6贴合的部分所设置的敞开口称为第二敞开口。 当然， 屏蔽框 7也可 以不采用六面体形状的框体 8， 例如： 在图 2中将屏蔽框 7既不与 PCB 5贴合的部分， 也不与 USB连接器 6贴合的部分设置为曲面。
为了在完成装配后能够检查 USB接口的管脚 4是否焊接牢固， 如图 2所示， 可以 在所述框体 8上设置观测所述管脚 4的观测窗口 9， 用于观测所述管脚。
为了使得屏蔽电磁干扰的效果更好， 如图 3所示， 本发明实施例还可以在屏蔽框 11的外侧包覆一个屏蔽盖 10，而其中的屏蔽框 11的形状结构可以与图 2中描述的屏蔽 框 7的结构完全相同。
图 3中的屏蔽盖 10需要与屏蔽框 11固定到一起， 防止发生错位， 本发明实施例 可以采用但不限于如下方式将屏蔽盖 10与屏蔽框 11固定：
第一、如图 3所示， 在所述屏蔽框 11上设有至少一个限位孔 12， 并在所述屏蔽盖 10上设有对应于所述限位孔的限位凸起 13， 在限位凸起 13卡入限位孔 12后， 就能够 起到定位屏蔽框 11和屏蔽盖 10的作用， 保证两者之间不会错位。
第二、在所述屏蔽框 11上设有至少一个限位凸起， 该结构图中未示出， 并在所述 屏蔽盖 10上设有对应于所述限位凸起的限位孔， 在限位凸起卡入限位孔后， 就能够起 到定位屏蔽框和屏蔽盖的作用， 保证两者之间不会错位。
无论限位凸起是设置在屏蔽框上还是设置的屏蔽盖上， 都可以采用冲压的方式形 成这个限位凸起， 这种冲压加工能够快速冲压出限位凸起， 提高生产效率， 降低生产成 本。 当然， 将屏蔽盖 10与屏蔽框 11固定还可以是螺栓、 螺丝连接， 粘贴连接或其他类 似的连接方式。 一般情况下的 USB设备采用图 2或图 3对应的屏蔽方式已经足够完成基本功能， 在某些情况下， USB设备可能会存在多个 PCB (电路板） ， 这就需要对屏蔽方案做进一 步的改进。例如，如图 4所示：该 USB接口设备还包括另外一块 PCB板， 即第二 PCB 14, 为了能够固定该第二 PCB 14， 本发明实施例在第二 PCB 14上设有固定孔 15， 并在屏蔽 盖上设有与所述固定孔 15相对应的固定引脚 16， 将该固定引脚 16插入所述固定孔 15 以固定第二 PCB 14。其中屏蔽盖其他部分结构以及屏蔽框的结构均可以采用图 3中的方 案， 将所有 PCB、 屏蔽框、 屏蔽盖和 USB连接器装配到一起后的效果如图 5所示。
本发明实施例还提供一种终端设备， 该终端设备采用上述图 2至图 5中的 USB接 口设备的技术方案， 同时该终端设备还包括接入模块（图中未示出） ， 所述接入模块用 于实现所述终端设备无线接入网络， 例如所述接入模块可以是 WIFI接入模块、 3G接入 模块等等。
上述的终端设备可以是数据卡， 此时， 该数据卡通过上述的 USB接口设备与计算 机的 USB接口相连， 该数据卡用于实现所述计算机通过所述数据卡无线接入网络。
本发明实施例主要用在各种采用 USB接口的设备中， 特别是采用 USB接口的无线 通信设备中。 例如， 本使用新型实施例提供的 USB接口设备可以用于各种终端设备中， 所述终端设备可以是各种具有 USB接口的固定终端或移动终端， 例如， 带 USB接口的数 据卡、 3G数据卡、手机等； 另外， 该天线装置还可以用于各种具有 USB接口的移动设备 或便携设备中，例如、带 USB接口的 MP3播放器、 MP4播放器、 PSP(PlayStation Portable, 便携式游戏站） 、 数码相机、 U盘等等。 其中， 3G数据卡是指应用于电脑并采用第三代 移动通信技术接入互联网的设备。
以上所述， 仅为本发明的具体实施方式， 但本发明的保护范围并不局限于此， 任 何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易想到的变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保护范围应所述以权利要求的保护 范围为准。

Claims

权利要求
1、 一种 USB接口设备， 包括通过管脚与电路板电连接的 USB连接器， 其特征在于， 所述 USB接口设备还包括贴合到所述 USB连接器和电路板连接处并罩住所述管脚的屏蔽 框；
所述屏蔽框为一框体，所述框体在与电路板贴合的部分具有第一敞开口、并在与 USB 连接器贴合的部分具有第二敞开口。
2、 根据权利要求 1所述的 USB接口设备， 其特征在于， 所述框体上还设有观测窗 口， 用于观测所述管脚。
3、 根据权利要求 1或 2所述的 USB接口设备， 其特征在于， 所述 USB接口设备还 包括包覆在所述屏蔽框外侧的屏蔽盖。
4、 根据权利要求 3所述的 USB接口设备， 其特征在于，
在所述屏蔽框上设有至少一个限位孔，并在所述屏蔽盖上设有对应于所述限位孔的 限位凸起； 或者， 在所述屏蔽框上设有至少一个限位凸起， 并在所述屏蔽盖上设有对应 于所述限位凸起的限位孔。
5、 根据权利要求 4所述的 USB接口设备， 其特征在于， 所述限位凸起为通过冲压 形成的限位凸起。
6、 根据权利要求 3所述的 USB接口设备， 其特征在于， 所述屏蔽盖上设有与固定 引脚， 所述固定引脚与另外一块设有固定孔的电路板上的固定孔相对应， 该固定引脚插 入所述固定孔使所述另外一块设有固定孔的电路板固定。
7、 根据权利要求 1或 2所述的 USB接口设备， 其特征在于， 所述管脚穿过所述第 一敞开口与所述电路板相连接，所述管脚穿过所述第二敞开口与所述 USB连接器相连接。
8、 一种终端设备， 其特征在于， 所述终端设备包括权利要求 1至 7任一项所述的 USB接口设备， 和接入模块；
所述接入模块， 用于实现所述终端设备无线接入网络。
9、 根据权利要求 8所述的终端设备， 其特征在于， 所述终端设备是数据卡， 所述 数据卡通过所述 USB接口设备与计算机的 USB接口相连，用于实现所述计算机通过所述 数据卡无线接入网络。
PCT/CN2010/074296 2009-08-12 2010-06-23 Usb接口设备和终端设备 WO2011017983A1 (zh)

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US20120100755A1 (en) 2012-04-26
EP2432080B1 (en) 2016-08-10

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