CN201174245Y - Portable hard disk kit of laptop computer - Google Patents

Abstract

The utility model discloses a hard disk box for a portable notebook computer and relates to external storage equipment of the computer. The hard disk box is formed by adding a USB wire on the prior notebook hard disk box; one end of the USB wire is directly welded in the box; the other end of the USB wire is provided with a USB plug which can be arranged in a clamping groove of the box when the USB plug is not used; the box is also provided with a chargeable battery to solve the problem that a single USB interface has insufficient power supply; energy is stored in idle time through the inbuilt chargeable battery; when the USB interface has insufficient power supply, voltage is automatically boosted to provide 5V for replenishment in order that the power supply of the single USB interface become possible; the single USB wire (comprising a plug) is easily manufactured to be inbuilt in the structure (that is, the USB wire is put inside a shell); and the hard disk box with the inbuilt USB wire brings convenience for carrying and only occupies one computer USB interface.

Description

A kind of portable notebook hard-disk cartridge

Technical field

The utility model relates to a kind of computing machine peripheral storage device, in use must load onto hard disk earlier, pack into and just be portable hard drive behind the hard disk, usually divide by notebook hard disk size 2.5 cun 1.8 cun branch is arranged, also correspondence is referred to as 2.5 cun hard-disk cartridges and 1.8 cun hard-disk cartridges, and this case mainly is that 2.5 cun hard-disk cartridges are discussed, hereinafter to be referred as hard-disk cartridge.

Background technology

Hard-disk cartridge is on the market formed to become with circuit board by shell at present, and wherein circuit board is made of USB bridgt circuit, USB socket, hard disk seat, pilot lamp and PCB again; Shell shields, and circuit board converts hard disk to USB interface, joins a USB line again, and portable hard drive just reaches as the convenient computer that connects of USB flash disk, has given full play to the high capacity of hard disk and the convenience of USB plug and play; But as the portable hard disk box, the user must be with a USB line, could use, and because of the restriction of USB confession electricity, this root USB is the USB line of three terminals of special use usually, and versatility is relatively poor, also often will occupy two USB mouths of computer during use, this is to carrying and using and all brought inconvenience.

Summary of the invention

The purpose of this utility model provides a kind of hard-disk cartridge of internal USB line, just directly connects computer by built-in USB line, need not wear special-purpose USB line more in addition.The purpose of this utility model is achieved in that we suppose directly two USB line of a standard directly to be cut off, the broken string end is soldered directly on the USB of hard-disk cartridge the inside, an other end band standard USB-A head is stayed the outside, the draw-in groove position is arranged in the shell of hard-disk cartridge, the USB head was not placed in the draw-in groove with regard to card when hard-disk cartridge did not use, when the user uses, pull out the USB head and directly connect computer and get final product, see feasible fully from the angle of communication; But very fast we can find that such hard-disk cartridge works together and maybe can't discern hard disk through regular meeting's instability, indicate in the specification of USB white paper that originally the USB maximum output current is 500mA, and the notebook hard disk current flow ratings that surpasses 40G now is all at 600-1000mA, the hard disk that rotating speed is 5400 revolutions per seconds, consumed current also can be bigger, this single just USB hard-disk cartridge problem place, if we add a chargeable battery in hard-disk cartridge, when detecting the USB electricity shortage, provide supply by battery, problem just is readily solved so; Is ensuing problem that great battery capacity is just suitable? obtain such result in the reality test: electric current reaches 800mA when mobile hard disc box starts, in case access computer, if electric current was not all less than 300mA when computer was not visited portable hard drive (box), electric current is about 500mA during visit (reading or writing) hard disk, can reach 700mA once in a while, that is to say that battery really need provide the electric current supply to hard disk, be to take place in the short time at the hard disk startup and the accessed utmost point, and hard disk do not have accessed during, the computer USB mouth also has the power supply capacity that is imbued with that surpasses 200mA, can utilize this to be imbued with electric current during this and charge the battery; Then we do experiment with the lithium battery of a 300mA/3.7V, reading writing harddisk repeatedly, and all are normal, and the interior battery of box is in and discharges and recharges equilibrium state; We have increased the circuit that charges the battery in this experiment, and 3.7V is to the booster circuit of 5V, and USB is under-voltage and the testing circuit of USB free time.So far function of the present utility model just has been realized! Obviously, hard-disk cartridge of the present utility model need not dispose the USB line in addition, carries and uses conveniently, and only takies USB interface of computer, and internal battery makes that also power supply is more stable.

Further specify embodiment below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is the hard-disk cartridge shell figure of band draw-in groove

Fig. 2 is the circuit block diagram of DISK to Image box

Fig. 3 is the booster circuit schematic diagram

Fig. 4 is the under-voltage and idle-detection circuit theory diagrams of charging, the USB of lithium battery

Fig. 5 is the bridgt circuit schematic diagram that IDE changes USB

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples, among Fig. 1: 1 is USB plug, 2 is the USB line, 3 is the USB draw-in groove on the shell, this is that the USB head is stuck in the state in the draw-in groove, and the USB line length fixes on about 20cm, can keep a USB socket simultaneously, to make things convenient for the user when needs are grown Distance Transmission, can realize by own circumscribed USB line.Fig. 2 is the functional-block diagram of DISK to Image box, and " detecting A " is the under-voltage detecting unit of battery, and " detecting B " is USB electricity shortage detecting unit; USB directly connects bridgt circuit (this example is parallel port IDE) among the figure, and to the hard disk power supply, the battery charge condition: it is under-voltage that " detecting A " detects cell voltage, and " detecting B " detects voltage and surpass 4.8V, and IDE detects to idle, and then charging circuit charges the battery; DC/DC boosts provides the condition of USB electric current supply: " detecting B " detects voltage and is lower than 4.75V, and the DC/DC circuit is just started working, and cell voltage is risen to 4.8V, provides the electric current supply to USB.Fig. 3 is a booster circuit, adopts the QX3400 chip, the PWM working method, the voltage of VIN rises to VOUT=5V through this circuit, connects 5V_USB, and the electric current of 700mA can be provided at most, add the 500mA of computer USB, amount to electric current and can arrive 1200mA, be enough to tackle present most notebook hard disk.Fig. 4 is widely used on the market at present bridgt circuit, and main core adopts the PL2506 of China prosperous company of a specified duration in Taiwan, and preferred circuit is not carefully stated at this.Fig. 5 is lithium cell charging circuit and testing circuit, BAT is a lithium battery, TL431 provides the reference voltage of 2.5V for entire circuit, and Q3 is the charging control tube, and U1-B is the under-voltage detection of battery, output signal allows the Q3 conducting realize charging when voltage is low, U1-A is the under-voltage detection of USB, exports the DC/DC-cont signal when USB voltage hangs down, the work of control booster circuit when detecting, Q4 is the hard disk idle-detection, participates in for charging control.If make Fig. 3 into serial ports bridging chip and circuit thereof, just can support serial ports hard disk (SATA); The utility model can also make it become the hard disk playing box of a band internal USB line if increase the audio/video decoding circuit in circuit.

Claims (3)

1 one kinds of portable notebook hard-disk cartridges, it mainly is made up of line, chargeable battery and charging circuit, booster circuit, testing circuit, USB bridgt circuit, pilot lamp, USB socket and the power panel of shell, band USB plug; It is characterized in that: line one end of band USB plug is on the circuit board that is directly connected in the box, and the draw-in groove inner card cage position of this corresponding USB head is arranged on shell.

2 hard-disk cartridges according to claim 1 is characterized in that: said hard-disk cartridge has chargeable battery and booster circuit simultaneously, and this battery and booster circuit provide the electric current supply for the hard disk in the box when computer USB confession electricity is not enough.

3 hard-disk cartridges according to claim 1 is characterized in that: said hard-disk cartridge is with charging road and testing circuit simultaneously, and this charging road to the condition that chargeable battery fills is: detect the outside at testing circuit and do not visit in the free time of hard disk in the box and carry out.

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