CN201340953Y - Antistatic adapter card of USB - Google Patents
Antistatic adapter card of USB Download PDFInfo
- Publication number
- CN201340953Y CN201340953Y CNU2008202076005U CN200820207600U CN201340953Y CN 201340953 Y CN201340953 Y CN 201340953Y CN U2008202076005 U CNU2008202076005 U CN U2008202076005U CN 200820207600 U CN200820207600 U CN 200820207600U CN 201340953 Y CN201340953 Y CN 201340953Y
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- China
- Prior art keywords
- usb
- antistatic
- electrically connected
- interface
- circuit board
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an antistatic adapter card of a USB interface, which is characterized in that the adapter card comprises a circuit board; wherein the circuit board mainly comprises a USB input interface, a USB output interface, an antistatic chip, a common mode coil and a chip capacitor; wherein the USB input interface is electrically connected with various USB peripheral equipment in the plug-in mode, such as mobile hard disk, MP3, USB mouse and keyboard and the like; and the USB output interface is electrically connected with the USB interface of equipment in the plug-in mode, such as computer. The electric energy of the generated static electricity is released through the antistatic chip on the adapter card, and the common mode interference is filtered through the common code coil, so that the antistatic protection for the USB interface which passes through the adapter card is realized.
Description
Technical field
The utility model relates to a kind of device of antistatic, in particular, relates to a kind of antistatic adapter that is applied to the external USB interface.
Background technology
Antistatic is called for short ESD again, and it is English: the abbreviation of Electro-Static discharge, the meaning are that static discharges.Static is a kind of objective natural phenomena, and contact, friction etc. all can produce static.Static has short characteristics of high voltage, low electric weight, little electric current, action time.Static works the mischief in a plurality of fields, and is particularly serious to the harm of electron trade.
The interface the most frequently used when USB interface is Computer Design, that quantity is maximum.Simultaneously, USB interface also is the highest interface of plug frequency in the actual use.The hot-swappable action of electronic equipment is easy to make computer to be subjected to the interference of static, and the USB circuit on the therefore general computer motherboard all can be reserved with the components and parts of antistatic.But when actual production,, often dispense the components and parts of antistatic on the mainboard, cause the USB interface of a lot of mainboards not possess electrostatic-proof function in view of the consideration of factors such as cost.In this case, the static that hot-swappable USB device produced might allow computer situations such as deadlock occur, and computer is damaged.
Summary of the invention
At the above-mentioned defective of prior art, the utility model provides a kind of antistatic adapter of USB interface, reduces the adverse effect that hot-swappable USB device is brought computer.
The antistatic adapter of a kind of USB interface described in the utility model mainly comprises a circuit board, and this circuit board mainly is made up of elements such as USB input interface, USB output interface, antistatic chip, co-mode coil, patch capacitors.
Described USB input interface, USB output interface are arranged at the circuit board two ends respectively, the antistatic chip is arranged at a side of close USB input interface on the circuit board, co-mode coil is arranged at a side of close USB output interface on the circuit board, and patch capacitor is arranged near the antistatic chip; The power pins of described USB input interface, antistatic chip, USB output interface is electrically connected, and is electrically connected with power end; The grounding pin of USB input interface, antistatic chip, USB output interface is electrically connected, and is electrically connected with earth terminal; The patch capacitor two ends are electrically connected with power end, earth terminal respectively; Two data pins of two pins and USB output interfaces of co-mode coil one end are electrically connected respectively, two pins of the co-mode coil other end are electrically connected with two data pins of USB input interface respectively, and are electrically connected with two data pins of antistatic chip respectively simultaneously.
The antistatic circuit of described circuit board, its principle be the static that produces at first by the antistatic chip on the adapter, pass through co-mode coil again.The antistatic chip generally is made up of a plurality of diodes, can discharge electric energy by this chip fast when the USB circuit is subjected to the electrostatic impact of plus or minus.Be embodied in: when the external static electrification surge voltage is transferred on this adapter by the USB input interface, antistatic chip on the card will discharge electric energy by the conducting of internal body diodes, common mode disturbances is filtered by co-mode coil again in the back, make the usb signal can be by the chip that is input to computer motherboard of USB output interface safety, thereby prevent that the electrostatic impact on the USB circuit from acting directly on the components and parts of computer-internal, cause the components and parts on the computer motherboard to damage.
Implement USB antistatic adapter of the present utility model, have following beneficial effect: the antistatic adapter of this circumscribed, can well discharge the static that hot-swappable USB device produces, protected computer.This adapter adopts standard fitting to be convenient to produce simultaneously, can extensively use in the equipment of USB interface.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing;
Fig. 1 is a structure chart of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, USB antistatic adapter comprises a circuit board, and this circuit board is made up of elements such as USB input interface 1, USB output interface 2, antistatic chip 3, co-mode coil 4, patch capacitors 5.Described USB input interface 1, USB output interface 2 are arranged at the circuit board two ends respectively, antistatic chip 3 is arranged at a side of close USB input interface 1 on the circuit board, co-mode coil 4 is arranged at a side of close USB output interface 2 on the circuit board, and patch capacitor 5 is arranged near the antistatic chip 3.
As shown in Figure 2, the pin 11 of USB input interface USB1 is electrically connected with the pin 34 of antistatic chip U1, the pin 21 of USB output interface USB2, is power end VCC.The pin 14 of USB input interface USB1 is electrically connected with the pin 31 of antistatic chip U1, the pin 24 of USB output interface USB2, is earth terminal GND.Place a patch capacitor C1 near antistatic chip U1, patch capacitor C1 two ends meet VCC and GND respectively.The pin 22,23 of USB output interface USB2 is electrically connected with 43,44 of co-mode coil L1 respectively.41,42 of co-mode coil L1 is electrically connected with the pin 33,32 of antistatic chip U1 respectively, and 41,42 also being electrically connected with the pin 12,13 of USB input interface USB1 respectively of co-mode coil L1.
During practical operation, USB device such as portable hard drive, MP3, the USB keyboard and mouse with the mode of pegging graft be electrically connected with the USB input interface USB1 of adapter, the USB output interface USB2 of adapter is electrically connected with the USB interface of equipment such as the mode of grafting and computer.When exterior static is transmitted on the adapter by USB input interface USB1, antistatic chip U1 on the adapter is discharged into electrostatic impact VCC or GND rapidly by circuit, filter common mode disturbances by co-mode coil L1 again, make the signal of USB pass through USB output interface USB2 safe transmission to the chip of computer motherboard, thereby prevent that the electrostatic impact on the USB circuit from acting directly on the components and parts of computer-internal, the components and parts on the computer motherboard are damaged.
In the use of reality, for the circuit board of protection adapter, can a shell be installed on circuit board and shield, shell shape does not limit.USB antistatic adapter also can design many group USB interface, and increases the antistatic circuit of respective numbers on circuit board.
The above only is a preferred embodiment of the present utility model, can not limit the scope that the utility model is implemented with it, and promptly the equalization of doing according to the utility model generally changes and modifies, and all should still belong to the scope of the utility model patent protection.
Claims (1)
1, a kind of USB antistatic adapter comprises a circuit board, and described circuit board is made up of USB input interface, USB output interface, antistatic chip, co-mode coil, patch capacitor, it is characterized in that,
Described USB input interface, USB output interface are arranged at the circuit board two ends respectively, the antistatic chip is arranged at a side of close USB input interface on the circuit board, co-mode coil is arranged at a side of close USB output interface on the circuit board, and patch capacitor is arranged near the antistatic chip;
The power pins of described USB input interface, antistatic chip, USB output interface is electrically connected, and is electrically connected with power end;
The grounding pin of described USB input interface, antistatic chip, USB output interface is electrically connected, and is electrically connected with earth terminal;
Described patch capacitor two ends are electrically connected with power end, earth terminal respectively;
Two data pins of two pins and USB output interfaces of described co-mode coil one end are electrically connected respectively, two pins of the co-mode coil other end are electrically connected with two data pins of USB input interface respectively, and are electrically connected with two data pins of antistatic chip simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202076005U CN201340953Y (en) | 2008-09-01 | 2008-09-01 | Antistatic adapter card of USB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202076005U CN201340953Y (en) | 2008-09-01 | 2008-09-01 | Antistatic adapter card of USB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201340953Y true CN201340953Y (en) | 2009-11-04 |
Family
ID=41236496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202076005U Expired - Fee Related CN201340953Y (en) | 2008-09-01 | 2008-09-01 | Antistatic adapter card of USB |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201340953Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820596A (en) * | 2012-08-03 | 2012-12-12 | 昆山大百科实验室设备工程有限公司 | Anti-static USB (universal serial bus) interface |
| CN106897241A (en) * | 2016-12-28 | 2017-06-27 | 深圳天珑无线科技有限公司 | A kind of usb circuit and mobile terminal being applied in mobile terminal |
| CN113411957A (en) * | 2021-06-30 | 2021-09-17 | 珠海格力电器股份有限公司 | Antistatic chip, circuit board and switch structure |
-
2008
- 2008-09-01 CN CNU2008202076005U patent/CN201340953Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820596A (en) * | 2012-08-03 | 2012-12-12 | 昆山大百科实验室设备工程有限公司 | Anti-static USB (universal serial bus) interface |
| CN106897241A (en) * | 2016-12-28 | 2017-06-27 | 深圳天珑无线科技有限公司 | A kind of usb circuit and mobile terminal being applied in mobile terminal |
| CN113411957A (en) * | 2021-06-30 | 2021-09-17 | 珠海格力电器股份有限公司 | Antistatic chip, circuit board and switch structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160801 Address after: Ten, 518000 floor, new world industrial town, Bantian street, Shenzhen District, Longgang District, Guangdong, China Patentee after: Shenzhen Shenzhou Creative Technology Limited Address before: 518112 new world industrial city, Shenzhen, Longgang, Guangdong Patentee before: Shenzhen Hasee Computer Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20160901 |