CN201392504Y - Keyboard with external power supply - Google Patents

Keyboard with external power supply Download PDF

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Publication number
CN201392504Y
CN201392504Y CN200820184022U CN200820184022U CN201392504Y CN 201392504 Y CN201392504 Y CN 201392504Y CN 200820184022 U CN200820184022 U CN 200820184022U CN 200820184022 U CN200820184022 U CN 200820184022U CN 201392504 Y CN201392504 Y CN 201392504Y
Authority
CN
China
Prior art keywords
keyboard
control circuit
usb connecting
usb
external electronic
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
Application number
CN200820184022U
Other languages
Chinese (zh)
Inventor
陆剑平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KINGSLANE INTERNATIONAL Ltd
Original Assignee
KINGSLANE INTERNATIONAL Ltd
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 KINGSLANE INTERNATIONAL Ltd filed Critical KINGSLANE INTERNATIONAL Ltd
Priority to CN200820184022U priority Critical patent/CN201392504Y/en
Application granted granted Critical
Publication of CN201392504Y publication Critical patent/CN201392504Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a keyboard with an external power supply, which comprises a keyboard body, a keyboard control circuit, a USB connecting wire, at least two USB connecting ports and a power supply unit, wherein the keyboard control circuit is arranged inside the keyboard body; a plurality of press keys are arranged on the keyboard body; one end of the USB connecting wire is connected with the keyboard control circuit, and the other end is connected with a computer system; the USB connecting ports are arranged on the keyboard body, and are respectively and electrically connected with the keyboard control circuit for connecting at least one external electronic device; and the power supply unit is connected with the keyboard control circuit for providing electrical power required by the operation of each external electronic device.

Description

Keyboard with external power source
Technical field
The utility model relates to a kind of keyboard with external power source, more particularly, relates to and a kind ofly external power source can be supplied to the keyboard of being located at least two usb connecting ports on the keyboard.
Background technology
In the society in modern times, various computer peripheral devices such as MP3 walkman, carry-on dish, portable hard drive, calculating punch are very universal, and often each computer peripheral device need be connected computing machine, to carry out the transmission of data.Yet the main frame of computing machine normally is placed on desktop below or the desktop, and the usb connecting port of main frame is the back side of being located at main frame mostly, the inconvenience when causing all kinds of computer peripheral device of plug on the main frame.
Moreover, because the usb connecting port of main frame is limited, and can't satisfy computing machine user's demand, for addressing the above problem, that is peddled on the market a kind ofly has a universal serial bus (UniversalSerial Bus, being called for short USB) keyboard of the connectivity port computer peripheral device that is available for users to will to have easily USB plug and play interface is connected on the keyboard, carries out data transmission with connection and the main frame that sees through keyboard.
The normalized current of USB 2.0 specifications is 500mA at present, not excessive when connecting such as the bigger computer peripheral device of power consumption such as portable hard drive, the current value because the power consumption peak value of most of portable hard drive all is above standard, the impedance that the material of portable hard drive connecting line and length cause also can influence the transmission of electric current, and the chip circuit above the portable hard drive external connection box also consumes electric power partly, causes the deficiency of output current and can't start portable hard drive.In addition, when plugging a plurality of USB computer peripheral device simultaneously, the also electricity shortage of Chang Fashengyin motherboard or keyboard USB interface, and can't start each computer peripheral device smoothly, even cause data loss, damage and computer system situation when machine.
Therefore, at above-mentioned defective, need a kind of keyboard with external power source, it can provide enough power supply to keep the normal operation of USB computer peripheral device after inserting the USB computer peripheral device.
The utility model content
The technical problems to be solved in the utility model is, above-mentioned defective at prior art, a kind of keyboard with external power source is provided, by this keyboard control circuit is connected to the power-supply unit structure, when externally electronic installation is plugged into usb connecting port on the keyboard, can provide each external electronic running required electric power.
For reaching above-mentioned purpose, the utility model provides a kind of keyboard with external power source, it comprises the keyboard body, be located at the keyboard control circuit of keyboard body interior, USB connecting line, at least two usb connecting ports and power-supply unit, and wherein, this keyboard body is provided with a plurality of buttons; One end connecting key disk control circuit of this USB connecting line, the other end connects computer system; This usb connecting port is located on the keyboard body, and is electrically connected with keyboard control circuit respectively, for connecting at least one external electronic; And this power-supply unit connects this keyboard control circuit, by each external electronic running required electric power is provided.
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 the stereo appearance figure of the preferred embodiment of the keyboard with external power source of the present utility model;
Fig. 2 is the stereo appearance figure of another angle of preferred embodiment of the present utility model;
Fig. 3 is the stereo appearance figure of another embodiment of the present utility model.
Embodiment
Shown in Fig. 1,2 figure, it is the preferred embodiment with keyboard 1 of external power source of the present utility model, for connecting computer system, so that control signal is transferred to computer system.The utility model comprises keyboard body 11, is located at the keyboard control circuit 12 of keyboard body 11 inside, USB connecting line 13, two usb connecting ports 14 and power-supply units 15, and this keyboard body 11 is provided with a plurality of buttons 111, in order to input character data.
One end connecting key disk control circuit 12 of this USB connecting line 13, the other end is connected to computer system, to carry out the transmission of signal.
This usb connecting port 14 is located at the left and right sides of keyboard body 11 respectively, and is electrically connected with keyboard control circuit 12 respectively, and sacrificial vessel carries out data transmission and the external electronic power supply is provided after having the external electronic of USB interface to peg graft.During enforcement, described usb connecting port also can be made as a plurality of, and be disposed at respectively keyboard around.
And these power-supply unit 15 connecting key disk control circuits 12, and this power-supply unit 15 comprises exchanging changes d-c transformer 151 and power lead 152, with after connecting civil power, civil power is converted to the required direct current of keyboard control circuit 12, and using provides each external electronic running required electric power.During enforcement, said power 152 also can link with USB connecting line 13 and be Y-shaped (shown in the 3rd figure), make keyboard control circuit 12 can see through Y type connecting line 16 set USB plug 161 and be connected to computer system and carry out data transmission, and change d-c transformer 162 by the 16 set interchanges of Y type connecting line and obtain required electric power.
During enforcement, this keyboard control circuit 12 comprises current distribution unit 121 and signal distribution unit 122, this current distribution unit 121 becomes to be electrically connected respectively with power-supply unit 15 and each usb connecting port 14, to supply electric power to current distribution unit 121 in external power source and connecting line, distribute to each usb connecting port 14 different electric current to drive external electronic via current distribution unit 121, and this signal distribution unit 122 becomes to be electrically connected respectively with USB connecting line 13 and each usb connecting port 14, carries out the signal transmission for computer system and arbitrary external electronic that is connected usb connecting port 14.
Therefore, the utlity model has following advantage:
1, because current distribution unit of the present utility model can be according to the external electric that is plugged on each usb connecting port The electricity needs of sub-device effectively to dispose, not only can provide various high power consumption external electronic Required electric power is avoided producing the phenomenon that Missing data or electronic installation do not operate, and can be plugged at the same time many During individual external electronic, improve the stability of transfer of data, to improve its practicality.
2, this utility model can not need to change under the condition of main frame, solves on the computer to connect Connect the problem of port deficiency, to strengthen extendibility and the ease of use of computer connection interface.
In sum, according to the content that is above disclosed, the utility model really can reach its intended purposes, and a kind of quantity that can expand the computer system connectivity port is provided, and can supply with enough electric power and give the external electronic that is inserted on the keyboard, to guarantee the keyboard of external electronic normal operation.

Claims (4)

1, a kind of keyboard with external power source is connected to computer system, in order to signal is transferred to this computer system, it is characterized in that, comprising:
Keyboard body and be located at the keyboard control circuit of described keyboard body interior, this keyboard body is provided with a plurality of buttons;
The USB connecting line, one end connecting key disk control circuit, the other end connects computer system;
At least two usb connecting ports are located on the keyboard body, and this usb connecting port is electrically connected with keyboard control circuit respectively, for connecting at least one external electronic;
Power-supply unit connects this keyboard control circuit, is used to provide each external electronic running required electric power.
2, the keyboard that external power source is arranged according to claim 1, it is characterized in that, this keyboard control circuit comprises current distribution unit, this current distribution unit is electrically connected with this power-supply unit and each usb connecting port, supplies to distribute to the different electric currents of each usb connecting port to drive external electronic.
3, the keyboard that external power source is arranged according to claim 1, it is characterized in that, this keyboard control circuit comprises signal distribution unit, this signal distribution unit is electrically connected with USB connecting line and each usb connecting port, for computer system and arbitrary signal transmission that is connected the external electronic of usb connecting port.
4, the keyboard that external power source is arranged according to claim 1 is characterized in that, this power-supply unit comprises exchanging changes d-c transformer, civil power is converted to the required direct current of keyboard control circuit.
CN200820184022U 2008-12-28 2008-12-28 Keyboard with external power supply Expired - Fee Related CN201392504Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200820184022U CN201392504Y (en) 2008-12-28 2008-12-28 Keyboard with external power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200820184022U CN201392504Y (en) 2008-12-28 2008-12-28 Keyboard with external power supply

Publications (1)

Publication Number Publication Date
CN201392504Y true CN201392504Y (en) 2010-01-27

Family

ID=41599323

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200820184022U Expired - Fee Related CN201392504Y (en) 2008-12-28 2008-12-28 Keyboard with external power supply

Country Status (1)

Country Link
CN (1) CN201392504Y (en)

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100127

Termination date: 20101228