CN2399770Y - Switching or converting switch of computer complex built-in hard disk - Google Patents

Abstract

The utility model relates to a switching or converting switch of a plurality of built-in hard disks of a computer, and belongs to the switching or converting technical field of hard disks of a computer. The utility model is characterized in that a single or a plurality of system interfaces which comprise data and power connectors and are used for connecting to a system IDE interface and a circuit power circuit, a plurality of hard disk interfaces which comprise data and power connectors and are used for connecting to IDE jacks of a built-in hard disks and power jacks, and a switching or converting switch device which is arranged at a front panel of a computer or a wiring area of the rear part of the computer and can be conveniently operated. The utility model which is simple and easy can effectively utilize a plurality of built-in hard disks of the computer and share the resources of computer hardware.

Description

The switching or the switch of the built-in hard disc of patent computing machine plural number

The utility model is the switching or the switch of the built-in hard disc of a kind of computing machine plural number, belongs to the computing machine hard disc and switches or conversion technology field.

The hard disk drive of computing machine traditionally is unique and resident constant for specific system's setting.Setting completed in case hard disc is installed in computing machine, and being provided with of operating system will remain unchanged, up to reinstalling or change the outfit new hard disc.Open the cabinet dismounting and reconnect various cables owing to relate to, it is a very loaded down with trivial details job that hard disc is installed.

For various needs, a lot of modern computers use more than single hard disc: being to be used for data backup sometimes, is the mobility storage medium that is used for the high capacity file sometimes, is to be used for the hard disc test purpose sometimes.Also there is increasing user in same computing machine, to use plural hard disc to carry out different tasks,, uses different language environments, move some specific program etc. as the operation different operating system.When the shared computing machine of several users, everyone can guarantee privacy by special-purpose hard disc, make things convenient for the collocation of proprietary separately system's setting of each user and application program, also can avoid a certain user's maloperation to cause software setting chaotic and cause system not work.All above these are used the switching that all needs to realize easily and effectively between the different hard discs.

United States Patent (USP) 5563767 has been introduced a kind of drawer type hard disc adapter, extracts out and the exchange hard disc by movable supporting frame.User only need once start shooting when mounting adapter case and interior wiring, later on each dismounting or exchange hard disc just can be realized by the Hard Magnetic tray salver of extracting or insert special use out.This device is suitable for single built-in hard disc and removes and exchanged form.Standby hard disc physics divorced from computer under this mode, and before inserting computing machine once more, can not use.Except that the data back-up application, this exchanged form for the desired convenience of other aforementioned applications and the switching between the frequent built-in plural hard disc or the conversion and inapplicable.And, above-mentioned exchange make adapter peg graft in addition key long-term use the back wearing and tearing and cause the hard disc maloperation may.In case wearing and tearing take place, whole adapter must be discarded and change the outfit.

Chinese patent 94206530 has proposed a kind of many disks selector switch, it is characterized in that using electrical isolation load circuit and relay that one of plural hard disc of being connected in an IDE interface is realized selecting to start.This selector switch has only been considered the simplest a kind of situation in the multiple possibility of the built-in plural hard disc of effective use.And this patent uses the electronics mode of relative complex and electronic devices and components to increase technical difficulty and cost that device is realized, thereby has limited the feasibility of scheme.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art and the switching or the switch of the built-in hard disc of a kind of computing machine plural number is provided.Not opening cabinet and not detach switching or the conversion that realizes the built-in hard disc of computing machine plural number under the condition of standby hard disc, provide one group of comprehensive, simple solution to effective use of built-in computer plural number hard disc.

The purpose of this utility model can reach by following measure: the utility model provides one group of switchgear, in order to switch or conversion not opening cabinet and do not detach the user mode that realizes built-in computer plural number hard disc under the condition of standby hard disc.According to the implementation that the utility model is taked, this switchgear comprises at least one system interface, to be connected to the IDE interface of computing machine by the IDE cable; The plural number rigid disk interface is to be connected to each hard disc of adorning in the computing machine by the IDE cable with parallel way; In running order system interface and the actuating switch between the hard disc; And the fixture that this switch is installed on computing machine front panel or back wire district.

Alleged " switching " of the utility model is meant that of select starting in the plural built-in hard disc that is connected in single IDE interface enters duty and makes all the other hard discs place dormant state; " conversion " is meant connection exchange and the function exchange between the hard disc of two duties that are connected in two IDE interfaces.

The purpose of this utility model can also reach by following measure: connected system and rigid disk interface and the cable of guiding switch into comprise the IDE data cable that is access to data-interface and are access to four line feed cables of power interface in the utility model.According to different implementations, can implement two kinds of different switching mechanisms.Power switch mechanism can be used for selecting and starts one of plural hard disc as scratch diskette and other dishes place dormant state.The data-interface of system and all built-in hard discs is connected in parallel by an IDE cable under this implementation, and the earth terminal of system and all hard disc power interfaces is connected in parallel by two ground wires in the feed cable.Two other supply lines in the feed cable is via the feeder ear of a binary channels multi-way switch connected system and hard disc power interface.This switch be used to realize the supply lines of drawing by the system power supply interface and the supply lines of drawing by selected unique hard disc power interface between electrical communication.When switch enters a kind of connection status, provide the circuit of power supply to form the loop to selected hard disc supply lines, select unique hard disc by the electric current of system power supply interface supply by the switchgear flow direction and make it to enter duty.Under this power switch mechanism, the IDE interface of computing machine in the plural hard disc that the IDE cable is connected in parallel only identification be powered and enter selected unique operation board of duty.Other hard discs that are parallel to the IDE cable are passed through by the computer system bypass, and are inoperative.

Switching device in the above-mentioned power switch mechanism implementation can be that simple binary channels multidigit is slided or rotary switch, special electronic switch or binary channels multidigit conducting type connector inserts.Wherein, the conducting type connector inserts constitutes the outer part of machine of split type switching device, and its effect is default opening circuit on the socket piece of part in connecting as switching on and shutting down when inserting.This conducting type connector can pass through the proprietary hardware key function of the suitable coding realization of conduction position to each specific hard disc, and promptly each hard disc can only be started by unique conducting combination.This function can be used for the mandate sign of computing machine, provides for the protection of significant data in the specific hard disc and prevents unauthorized use for specific hard disc.

If desired with above-mentioned one of the hard disc that stops by another IDE interface of computing machine identification and control and become data recording or back-up disk, then need use full tunnel data switch mechanism.Under this switching mode, related built-in hard disc power interface is connected in parallel in system power supply interface and impartial power supply by four line feed cables.The conversion of data line realizes by the conducting one to one between 40 line IDE data cables of every pair of particular system interface and rigid disk interface combination.For two available in common computer IDE interfaces, each particular moment needs two pairs of full tunnel conducting connectors to finish any two being electrically connected in IDE interface and the plural built-in hard disc.In the implementation of practical, each IDE-hard disc data line between can use 80 passage conductings to connect cassette or plug-type switching device, or 80 passages that have of particular design slide or rotary switch.

Maloperation for fear of hard disc switchgear when the computer working causes hard disc damage and functional disturbance, and the utility model self-locking device safe in utilization guarantees that the hard disc switching device can not operated before computer power supply is closed.This self-locking device is the spare system power switch that a priority level is higher than the hard disc switching device.It guarantees each action enforcement after system power supply is closed of hard disc switchgear.A kind of implementation easily is the door shape upset cover plate that covers on the hard disc switching device.When cover plate closed, the system power supply of connecting self-lock switch and being connected in series with it made the current state of hard disc switching device effective.When cover plate was opened, self-lock switch opened circuit and cuts off system power supply simultaneously, and computing machine is in off-mode, can switch hard disc safely.In order to realize more effective self-locking, can use by the power-actuated self-locking pin of electromagnetism after system power supply is opened with cover plate mechanical caging.

Description of drawings:

Fig. 1 is a theory diagram of the present utility model.

Fig. 2 is the wiring diagram of power switch mechanism implementation.Be used to switch 3 hard discs that are connected in an IDE interface.

Fig. 3 is the installation diagram of implementation described in Fig. 2.Show that an IDE interface constitutes the connection and the parts of two built-in hard discs, and be positioned at the switching device on 5.25 inches expansion slot cover plates of computing machine front panel and the back wire district cassette expansion slot metal cover plate.

Fig. 4 is the installation diagram of implementation described in Fig. 2.Show that an IDE interface constitutes the connection and the parts of two built-in hard discs, and be positioned at the cassette wire jumper type connector switch device on 5.25 inches expansion slot cover plates of front panel, comprise socket and the specific coding plug-in card that is specific to one of hard disc.

Fig. 5 is the circuit block diagram of data switch mechanism implementation.Be used to realize the conversion between two IDE interfaces and two hard discs.

Fig. 6 is the installation diagram of implementation described in Fig. 5.Show that connection and the parts formation on the distribution card that connects up and the conversion socket-plug-in unit combination and the duty thereof that are positioned on 5.25 inches expansion slot cover plates of computing machine front panel illustrate.

Fig. 7 is the assembling and the schematic diagram of the self-locking pin of board-like power supply self-locking device of a shape overturn cover and Electromagnetic Drive.

The utility model is described further below in conjunction with accompanying drawing:

As shown in Figure 1: the device that the utility model relates to comprises plural rigid disk interface 1 and single or two system interfaces 2.These interfaces are access to wiring and distribute card 3, and its extended line is connected to switch 4.Switch 4 is hyperchannel conducting connectors, is used for the system and the disk interface of conducting appointment.Switch 4 can be realized self-lockings by self-locking device 6, the maloperation of switch 4 when preventing the computing machine energising.Switch 4 starts pilot lamp 5 to show the hard disc of bright work at present.Switch 4 can as sliding or the rotary switch formation, also can be made of electronic switching circuit traditional mechanical system.Switch 4 also can be taked plug-in type split switch form such as socket and print version conducting card 7, and its effect is the system and the disk import of conducting appointment when inserting.Pilot lamp can adopt common light emitting diode.

As shown in Figure 2: this

One of practicable implementation of utility model is used the wiring diagram of the switch type switchgear of power switch mechanism.This device comprises three rigid disk interface 1A, 1B, 1C and a system interface 2.Each interface is made up of data contacts and power supply contact.Data contacts and data cable 8 are common IDE cable, and three hard disc data-interfaces are connected to IDE interface data interface.Feed cable and contact are connected in power supply plug 10 to provide electric power to hard disc by system power supply interface 11.The feed cable of drawing by power interface 11 by two be respectively+the double dynamical lines 12 and pair ground wires 13 of 5 volts and+12 volts form.

The switching function of this implementation is realized that by switch 4 this switch connects the feed circuit selectivity of leading to selected dish by the conducting contact on its binary channels conducting connector 18.In side circuit, two ground wires 13 of each hard disc power interface are connected in power supply plug 10 in the machine by system power supply interface 11 with parallel way.The double dynamical line 14 that leads to the hard disc power interface is connected in the selection contact group 16 on the switch 4.Be connected in common junction group 17 on the switch 4 from the double dynamical line 15 of system power supply interface.When the selected hard disc of switching is scratch diskette, this dish is powered thereby binary channels conducting connector 18 makes towards the double dynamical line 14 of hard disc power interface with from double dynamical line 15 conductings of system power supply interface.Pilot lamp 19 and driving circuit thereof are serially connected with in the double dynamical line 14+5 volts of power lines, when system to selected luminous demonstration when switching the hard disc power supply.

As shown in Figure 3: shown a kind of switch type, the formation of pratical and feasible implementation under the power switch mechanism.Wiring divider 20 is used for fitly arranging and to fix each power line right.Two ground wires 13 of being drawn by system interface 2 connect hard disc 1A and 1B by wiring unit 20 with parallel way, and reach towards hard disc 1A by double dynamical line 12A and the 12B that system interface 2 is drawn, the double dynamical line 15A of 1B and 15B are connected to common slide switch 4 behind wiring unit 20 location.The extended line of the double dynamical line 15 of being drawn by system interface 2 is connected in the common port of slide switch 4, leads to hard disc 1A, and the extended line of the double dynamical line of 1B is connected in two selecting sides of slide switch.Slide switch 4 each particular moment the double dynamical line of system power supply 15 can only be selected to be switched to the double dynamical line 12A of hard disc 1A or 1B or 12B the two one of.Switch 4 serial connections are used to indicate the hard disc of work at present corresponding to two light emitting diode lamps 19 of two hard discs.As user interface, switch 4 and light emitting diode 19 are installed on 5.25 inches expansion slot cover plates 21, and switch 4 passes square hole 22, and light emitting diode 19 passes circular hole 23 separately.They also can be installed on the computing machine back wire district cassette expansion slot metal cover plate 24.When the power lead of selected hard disc 1A or 1B was connected with the double dynamical line 15 of system power supply, its series connection lumination of light emitting diode showed.

As shown in Figure 4: shown a kind of implementation of using cassette switch plug-in unit.In this implementation, use conducting contact logarithm to replace the described slide switch of leading portion more than the plug connector combination of possibility state of a control number.When may state of a control being system interface when being connected to one of two rigid disk interfaces, the combination of switch plug-in unit can use the conducting contact more than two pairs printing strip conductor and PCB socket, or uses common nine kinds of needles plugs and sockets combination.Binary channels conducting connector 18 on the switch 4 described in Fig. 2 is by split type conducting link such as PCB card or 25 replacements of nine kinds of needles plug.Because the conducting contact logarithm on the socket piece is greater than the state of a control number, power line can be got multiple combination with being connected of conducting contact.The line 29 of conducting connector 27 upper contacts 28 must be complementary and could connect the feed circuit that system interface is extremely selected rigid disk interface with the combination that is connected set on the socket piece 24 in illustrated example.Can set the combination of its proprietary line for each hard disc on socket piece, then the plug spare of unique coupling can be used as the sign switch of this hard disc with it.In order to keep its uniqueness and monopoly, the line combination 29 on the plug spare should be encrypted and solidify.Line 29 on the PCB card 27 among the figure is forever encapsulated by plastic sheet or epoxy resin 26.Socket piece 24 also can adopt two card forms, and it presets or default hard disc can be connected by the connection combination on the resident slim card of a slice.When needs switch operating hard disc, the tag card that inserts selected hard disc between resident card and socket piece contact spring makes and presets or default connection disconnects and connected by tag card the feed circuit of new selected hard disc.

As shown in Figure 5: use the conversion hysteria switchgear block diagram of full tunnel data switch mechanism according to the utility model principle, be used to realize the function conversion between operating system dish and the data disks.This switchgear comprises two rigid disk interface 1A and 1B and two system interface 2A and 2B, directly or via wiring unit is connected to conversion socket 4 by the IDE data cable.Conversion socket 4 has parallel with conversion plug-in unit 7 or intersects two kinds of different connection status.When parallel connection, hard disc system interface 1A connected system interface 2A or IDE1, hard disc system interface 1B connected system interface 2B or IDE2.When cross connection, above-mentioned connection combined exchange becomes: hard disc system interface 1A connected system interface 2B or IDE2, hard disc system interface 1B connected system interface 2A or IDE1.Because IDE1 is presetting of computing machine or default boot disk interface, above-mentioned connection exchange has realized the conversion of boot disk.By proper circuit, conversion plug-in unit 7 can start pilot lamp 5 and show current boot disk name.Conversion socket also can place under the self-lock protection.

As shown in Figure 6: a kind of conversion hysteria switchgear of full tunnel data switch mechanism and the formation of pratical and feasible implementation thereof. Rigid disk interface 1A, 1B and system interface 2A, 2B passes through rigid disk interface socket 31A, 31B and system interface socket 32A, 32B is connected in wiring plate 30.By the printed circuit on the wiring plate, the corresponding contact of each of 31A and crosspoint array 33A is communicated with, and the corresponding contact of each of 31B and crosspoint array 33B is communicated with.Can be as being communicated with more than a kind of implementation of practicality by utilizing 40 line IDE data cables and corresponding web member to finish.Wiring plate is installed on 5.25 inches expansion slot canopy-type fixtures 34 and places the computing machine front panel.Have the through hole of preparing into conversion socket 4 35 on the fixture 34 and reach the through hole of preparing for pilot lamp 36 37.Respectively stay a breach 38 at the two ends of through hole 37, be used to install microswitch 39 and 40, and for changing the insertion location of plug-in unit.At the another side socket 41A of wiring plate 30,41B, 42A, 42B are respectively rigid disk interface socket 31A, 31B and system interface socket 32A, the extended end of 32B.43A, 43B are crosspoint array 33A, the extended end of 33B, and with 41A, 41A submission vent is put, 41AB, 42AB and 43AB receptacle combinations are formed conversion socket 4.Conversion plug-in unit 7 is made up of plug connector array 45, and it can insert socket row 41AB, 42AB, and any two row among the 43AB, its 80 passage conducting connector 46 is connected this two column data loop.When plug connector array 45 was positioned at the insertion state, the teat 47 of one end was depressed one of microswitch 39 and 40 by breach 38, connected current boot disk pilot lamp.One side of plug connector array is that an electric invalid plug-in unit 48 is used to change the insertion location of plug-in unit 7 and the not protection of gang socket row.Cover plate 49 is switch protecting sheathings that plastics or epoxy encapsulation form.

The synoptic diagram in Fig. 6 lower right corner is described the duty of conversion hysteria switchgear.When conversion plug-in unit 7 inserted conversion socket 4 according to the orientation in left side, transfer switch unit entered parallel connection.Multichannel conducting connector 46 makes left side two row sockets row, and promptly 41A connects to the circuit of 42B to 42A and 41B, makes it to become the partial data loop of 1A (hard disc 1)-31A-41A-46-42A-32A-2A (IDE1).Hard disc 1 was connected in IDE1 and became boot disk this moment.The teat 47 of conversion plug-in unit triggers microswitch 39 makes the boot disk pilot lamp in the luminous demonstration in hard disc 1 position.Hard disc 2 is connected in IDE2 and becomes data disks or back-up disk under same process.When conversion plug-in unit 7 rotations 180 degree inserted conversion socket 4 according to the orientation on synoptic diagram right side, transfer switch unit entered cross connection.Multichannel conducting connector 46 makes right side two row sockets row, and promptly 42A connects to the circuit of 43B to 43A and 42B.Because 33A, all contacts of 33B respectively with 31A, all contacts of 31B connect one to one, so the partial data loop becomes 1A (hard disc a 1) 33A (31A)-43A-46-42B-32B-2B (IDE2).Hard disc 1 was connected in IDE2 and became data disks or back-up disk this moment.Hard disc 2 is connected in IDE1 and becomes boot disk under same process.The teat 47 of conversion plug-in unit triggers microswitch 40 makes the boot disk pilot lamp in the luminous demonstration in hard disc 2 positions.Above-mentioned conversion socket and plug-in unit can adopt common IDE interface unit or other hyperchannel conducting interface unit such as rotary switch.These interface units must have the ability of connecting 80 line channels simultaneously.

Switch type that the utility model is related and conversion hysteria switchgear all are that intention is implemented to switch or translation function when computer shutdown.The data of may forming incorrect switching under the hard disc power supply state run off or hard disc damages.In order to prevent the generation of this maloperation, above-mentioned various implementations all can adopt foolproof.The effect of this self-locking device be hard disc switch or switching motion take place before with the power-off of hard disc or whole computer system.In other words, have only when system power supply is closed hard disc to switch or switch just can be operated, and when system powers hard disc switching or switch automatic blocking.

As shown in Figure 7: describe a kind of practicable foolproof implementation.This device is by being installed on the substrate recess 50 that switch or conversion socket 4 are housed.Transparent upset cover plate 51 can upwards be opened along turning axle 52 by light carrying handle hand 53.And have pilot hole 55 and lock hole 56 on 54 at the bottom of the contacted cover plate of recess sidewall.The microswitch 57 that is series at system power supply and electromagnetism lock 59 is equipped with in the bottom of recess bottom surface, and its contact push rod 58 stretches out the recess bottom surface by an aperture.Shown in Fig. 7 a, when cover plate was opened, microswitch contact push rod 58 was in release conditions, and system power supply opens circuit.The pin 60 of electromagnetism lock 59 retreats to below the recess sidewall plane owing to action of gravity.When cover plate closing, microswitch contact push rod 58 is in closure state by roof pressure at the bottom of the cover plate, but system's feed circuit are in opening state.Before system did not power, electromagnetism lock 59 no currents that are connected in series with the system power supply switch passed through, and pin 60 is because action of gravity still retreats to recess sidewall plane following (Fig. 7 b).54 by the spring ball assembly 61 that is installed on the recess downside wall and pilot hole 55 location at the bottom of this moment cover plate, and can open once again at any time.Fig. 7 c shows bright, and after system's power supply, the electromagnetism lock 59 that is connected in series with the system power supply switch has persistent current to pass through, and pin 60 rises to more than the recess sidewall plane owing to the electromagnetic force effect and inserts lock hole 56.This moment, cover plate was in self-locking state, can not be opened.Unless power-off, pin 60 will keep latched position always, to guarantee that hard disc switches or the not operability of transfer switch unit.

The accompanying drawing that is provided is only had a diagram effect, does not define limitation of the present utility model or scope.

The utility model mutually this prior art relatively has following beneficial effect: 1) for effectively utilizing built-in computer plural number hard disc that comprehensive alternative solution party is provided Case; 2) for providing new by the effective utilization of complex built-in hard disk and Sharing computer hardware resource Solution; 3) a kind of simple User Recognition and mandated program have been proposed; 4) implementation is based on simple mechanical device, and the Technological Economy that has significantly improved scheme is feasible The property.

Claims (7)

1, the switching or the switch of the built-in hard disc of computing machine plural number, comprise each system interface, the connection of data cable or feed cable between rigid disk interface and the switching device, it is characterized in that this device is made up of following part: single or plural system interface comprises data and power connector and is used to be connected to system identifier E interface and the system power supply circuit; The plural number rigid disk interface comprises data and power connector and is used to be connected to the IDE socket and the outlet of built-in hard disc; Be installed on computing machine front panel or back wire district can handled easily switching or switch device.

2, require the switching or the switch of 1 the built-in hard disc of computing machine plural number based on claim, it is characterized in that system interface is connected in the IDE1 interface of computing machine, its plural rigid disk interface is connected in same number of built-in hard disc; System interface and plural rigid disk interface are connected in parallel by the ground wire of data cable and feed cable; The double dynamical line of being drawn by the system power supply interface is connected in the common port of multidigit bilateral slide switch, and the switching selectivity by switch bit be connected to the double dynamical line of the selected work hard disc on the switch selecting side, thereby connect feed circuit to this dish; Described slide switch is installed on computing machine front panel expansion slot cover plate or back wire district cassette expansion slot metal cover plate, can be operated easily by the user.

3, require the switching or the switch of 1 the built-in hard disc of computing machine plural number based on claim, it is characterized in that a system interface is connected in the IDE1 interface of computing machine, plural rigid disk interface is connected in same number of built-in hard disc; System interface and plural rigid disk interface are connected in parallel by two ground wires of data cable and feed cable; The double dynamical line of being drawn by the system power supply interface is connected in PCB with multidigit normal opened contact or two specified joint on the pin type socket piece, and the double dynamical line of being drawn by each hard disc power interface is connected in other specified joint of socket piece one by one; The double dynamical line contact of system power supply is by being connected the double dynamical line contact that the binary channels line that is complementary of combination optionally is connected to selected work hard disc with above-mentioned on discrete PCB card or the Pin contact, thereby connects the feed circuit to this dish; Because the binary channels line on the discrete plug-in unit is exclusive with unique corresponding to arbitrary hard disc, this plug-in unit becomes the identification hardware key of this hard disc, and its possessor becomes unique user of being authorized; Described socket is installed on computing machine front panel expansion slot cover plate or the back wire district cassette expansion slot metal cover plate, can be by user's handled easily.

4, require the switching or the switch of 1 the built-in hard disc of computing machine plural number based on claim, it is characterized in that two system interfaces are connected in the IDE1 and the IDE2 interface of computing machine, two rigid disk interfaces are connected in two built-in hard discs; Two data cables of drawing by system interface be connected in the conversion socket back of the body end three rows 6 winding points in the middle of arrange two groups; The two ends two that two data cables of being drawn by rigid disk interface are connected in the conversion socket back of the body end three rows 6 winding points are arranged four groups, and wherein a row is that another row is the location swap of unit with the contact group; Realize being connected in set mode between two IDE interfaces and two hard discs with all data passage conducting connector inserts of while conducting two row 4 winding points; When plug-in unit changed the position, the switching of the built-in hard disc of computing machine plural number or the collocation of switch IDE interface and hard disc changed, thereby realized that each hard disc is by the function conversion of boot disk to data disks.

5, require the switching or the switch of 1 or 4 the built-in hard disc of computing machine plural number based on claim, it is characterized in that two system interfaces are connected in the IDE1 and the IDE2 interface of computing machine, two rigid disk interfaces are connected in two built-in hard discs; The common port one that two data cables of being drawn by system interface are connected in three rows, the 6 winding points of all data passage dibit rotary switch is arranged two groups; The selecting side two that two data cables of being drawn by rigid disk interface are connected in the rotary switch three rows 6 winding points is arranged four groups, and wherein a row is that another row is the location swap of unit with the contact group; All data passage dibit rotary switch conducting simultaneously two rows four windings point is realized being connected in set mode between two IDE interfaces and two hard discs; When switch turned to one of two kinds of selections, the collocation of IDE interface and hard disc changed, thereby realized that each hard disc is by the function conversion of boot disk to data disks.

6, require the switching or the switch of 2 to 5 the built-in hard disc of computing machine plural number based on claim, it is characterized in that switching or transition status is shown by mounted LEDs pilot lamp on computing machine front panel or the back wire district fixture.

7, require the switching or the switch of 2 to 5 the built-in hard disc of computing machine plural number based on claim, it is characterized in that switching or switching device is protected by foolproof, to prevent the maloperation under system's "on" position; Self-locking device refer in particular to comprise when closing trigger microswitch with connect system's feed circuit transparent cover plate, and the electromagnetism lock of system's energising back locking transparent cover plate.

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