CN1431657A - Magnetic suspension type optical disk drives - Google Patents
Magnetic suspension type optical disk drives Download PDFInfo
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- CN1431657A CN1431657A CN 02101576 CN02101576A CN1431657A CN 1431657 A CN1431657 A CN 1431657A CN 02101576 CN02101576 CN 02101576 CN 02101576 A CN02101576 A CN 02101576A CN 1431657 A CN1431657 A CN 1431657A
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- optical disk
- disk drives
- suspension type
- type optical
- magnetic suspension
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Abstract
The optical disk drive includes the tray rack of optical disks, at least two pieces of soft magnet and the drive case. The soft magnet pieces are utilized to generate the magnetic force and interact with another magnetic force generated by the wilding in order to take the tray rack back to the drive or push the tray rack out of the drive. The tray rack and the soft magnet pieces and the wilding are installed on the case. The electromagnetic suction repulstion make the tray rack move without need of the drive of gear mechanism. Thus, the assembly for lifting or lowering the read-write head does not need to be installed in the Magnetic suspension type optical disk drive.
Description
Technical field
The present invention relates in a kind of CD driver device, more detailed it, be involved in a kind of CD-ROM drive of tray rack travel mechanism of tool carrying disc.
Background technology
The tradition CD-ROM drive all adopts the mechanical hook-up that comprises gear mechanism and motor to carry out sending to and deactivating of CD.
Be the basic block diagram of traditional CD-ROM drive as shown in fig. 1, traditional CD-ROM drive 1 as shown in FIG. comprises tray rack 11, advance sheet electric switch 12, advance and retreat sheet motor 13, gear mechanism 14, electronic circuit 15, read/write head module 16, move back sheet electric switch 17, read/write head jacking gear 18, and read/write head 19, wherein, the CD action of advancing of CD-ROM drive 1 is: by the user CD is placed in order to after on the tray rack 11 of carrying disc, press into the sheet button or tray rack 11 is pushed in CD-ROM drive, make into sheet electric switch 12 conductings, thereby activation advance and retreat sheet motor 13, make it to be rotated in the forward, by advance and retreat sheet motor 13 driven gear mechanisms 14, in tray rack 11 shift-in CD-ROM drives 1, after tray rack 11 arrives the location, close advance and retreat sheet motor 13 by electronic circuit 15, and then 16 pairs of CDs of read/write head module read action.
And the action of the matting dish of CD-ROM drive 1 is: pressed by the user and move back the sheet button, make and move back 17 conductings of sheet electric switch, thereby activate advance and retreat sheet motor 13 and make it reverse rotation, by advance and retreat sheet motor 13 driven gear mechanisms 14, tray rack 11 is withdrawed from CD-ROM drive 1, after tray rack 11 arrives the location, close advance and retreat sheet motor 13, take out CD for the user by electronic circuit 15.After the user takes out CD, remake and once advance the sheet action, tray rack 11 is sent back in the CD-ROM drive 1 to its location.
Before beginning into sheet or finish move back sheet after, read/write head module 16 in the CD-ROM drive 1, for example, be the optical mirror slip module for reading and writing, must utilize one group of mechanical read/write head jacking gear 18 that read/write head 19 is risen earlier, treat that tray rack 11 enters in the CD-ROM drive 1, arrives after the location, read/write head jacking gear 18 is reduced to the height that can begin to read and write with read/write head module 16 again, and allows 19 pairs of CDs of read/write head can read action.
Above-mentioned traditional mechanical formula advance and retreat are on chip be equipped with following for improvements:
(1) advance and retreat sheet motor and gear mechanism take sizable space, so the thickness of CD-ROM drive is difficult for reduction;
(2) be matching mechanism action, must install read/write head lifting module additional, this and has increased the burden of adjustment and maintenance job except increasing material and assembly cost;
(3) mechanical type mechanism is easily stuck, and the possibility that breaks down is higher;
(4) gear mechanism wearing and tearing possibility height, the serviceable life of having limited CD-ROM drive;
(5) manufacturing of gear mechanism and assembly cost are all high;
(6) gear mechanism maintenances stuck or wearing and tearing are difficult for, and dismounting man-hour and maintenance cost are all high.
So, how to seek a kind of CD driver device, to improve above-mentioned weak point, be problem demanding prompt solution.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of magnetic suspension type optical disk drives, utilize the electromagnetism suction and repulsion to cause the tray rack of carrying disc to move, and need not tray rack be moved, the electromagnetism suction and repulsion directly puts on the tray rack of the carrying disc in the CD-ROM drive, tray rack is moved and CD sent and withdraw to CD-ROM drive, owing to needn't use gear drive, establish read/write head lifting module so this magnetic suspension type optical disk drives needn't refill.
Another purpose of the present invention is to provide a kind of magnetic suspension type optical disk drives, with minimizing material and assembly cost, and reduces and adjusts and the burden of maintenance job and the possibility that breaks down.
A further object of the present invention is to provide a kind of magnetic suspension type optical disk drives, it is easily stuck and make CD-ROM drive likelihood of failure problem of higher that it can eliminate mechanical type mechanism, high and the problem in serviceable life of restriction CD-ROM drive of gear mechanism wearing and tearing possibility, and the manufacturing of gear mechanism and assembly cost are all high, gear mechanism maintenances stuck or wearing and tearing are difficult for all high problem of dismounting man-hour and maintenance cost.
According to above-described purpose, the invention provides a kind of magnetic suspension type optical disk drives, comprising: an optical disc tray frame, drag CD in order to hold; At least two soft magnetism iron plates are in order to producing magnetic force and to produce reciprocation with magnetic force that a coil is produced, with optical disc tray frame income/release magnetic suspension type optical disk drives; And a CD-ROM drive shell, use installing for this optical disc tray, soft magnetism iron plate and coil.
Magnetic suspension type optical disk drives of the present invention utilizes the electromagnetism suction and repulsion to cause the tray rack of carrying disc to move, and need not tray rack be moved; The electromagnetism suction and repulsion directly puts on the tray rack of the carrying disc in the CD driver device, tray rack is moved and sends and withdraws from CD to CD-ROM drive, owing to needn't use gear drive, establishes read/write head lifting module so this magnetic suspension type optical disk drives needn't refill.
The advantage of magnetic suspension type optical disk drives of the present invention has:
(1) need not install read/write head lifting module additional for the matching mechanism action.So CD driver mechanism significantly simplifies, except saving material and assembly cost, also saved the burden of adjustment and maintenance job;
(2) manufacturing and the assembly cost of saving gear mechanism;
(3) do not re-use mechanical type advance and retreat plate gear mechanism, so the anxiety of no mechanical stuck fault;
(4) do not have the gear mechanism wear problems, so significantly increase the service life;
(5) needn't so can significantly improve the trustworthiness of product, reduce after service cost again because of mechanism blockage or wear problems dismounting and maintenance CD-ROM drive; And
(6) soft magnetism iron plate and coil take up space very little, so can significantly reduce the thickness of CD-ROM drive.
Description of drawings
For allowing above and other objects of the present invention, feature, advantage can become apparent, and will lift preferred embodiment, and cooperates appended icon, describes embodiments of the invention in detail, and the content Description of accompanying drawing is as follows:
It shown in Fig. 1 the basic block diagram of traditional CD-ROM drive;
It shown in Fig. 2 the basic block diagram of magnetic suspension type optical disk drives of the present invention;
Shown in Fig. 3 an embodiment of the electronic circuit of magnetic suspension type optical disk drives of the present invention;
Fig. 4 is the vertical view after the tray rack that is loaded with disc enters magnetic suspension type optical disk drives;
Fig. 5 is the vertical view after the tray rack that is loaded with CD withdraws from magnetic suspension type optical disk drives; And
Shown in Fig. 6 the soft magnetism iron plate of magnetic suspension type optical disk drives and the thickness of coil, with the comparison of traditional CD-ROM drive gear train thickness.
Symbol description among the figure:
1 CD-ROM drive
11 tray racks
12 advance the sheet electric switch
13 advance and retreat sheet motors
14 gear mechanisms
15 electronic circuits
16 read/write head modules
17 move back the sheet electric switch
18 read/write head jacking gears
19 read/write heads
2 magnetic suspension type optical disk drives
21 soft magnetism iron plates
22 tray racks
23 CD-ROM drive shells
24 coils
241 solenoids
25 electronic circuits
26 read/write head modules
Embodiment
Be the basic block diagram of magnetic suspension type optical disk drives of the present invention as shown in Figure 2.Magnetic suspension type optical disk drives 2 comprises soft magnetism iron plate 21, tray rack 22, CD-ROM drive shell 23, coil 24, electronic circuit 25 and read/write head module 26, owing to needn't use gear drive, establishes read/write head lifting module so this magnetic suspension type optical disk drives 2 needn't refill.In magnetic suspension type optical disk drives 2, with the soft magnetism iron plate 21 more than two or two, for example, soft magnet sheet for strip, be arranged in the magnetic suspension type optical disk drives 2 dual-side in order to the tray rack 22 of carrying disc, for example, can be arranged at the dual side-edge of the bottom of the tray rack 22 parallel with CD advance and retreat sheet direction, and CD-ROM drive shell 23 in, be provided with and soft magnetism iron plate 21 parallel coils 24 near the position of the soft magnetism iron plate 21 of the strip of tray rack 22 two bottom sides.This coil 24 comprises the solenoid 241 more than two or two, these a little solenoids 241 are arranged on demand and are arranged near part in the CD-ROM drive shell 23 of soft magnetism iron plate 21, can utilize electronic circuit 25 and the voltage that polarity continuously changes is put on the solenoid 241 of coil 24, and cause in per two solenoids 241 polarization continually varying magnetic fields.Soft magnetism iron plate 21 can use the soft magnetic material (ferrite material) of general manufacturing motor or transformer and make.The solenoid 241 of coil 24 can be made with the coil method of general motor, at this, with the motor coil material generate of circle is strip, and make solenoid 241, these a little solenoids 241 are arranged on demand and are arranged near part in the CD-ROM drive shell 23 of soft magnetism iron plate 21, and the continuous variation magnetic field of the continuous variation of per two solenoids, the 241 polarization S utmost point-N utmost points or the polarity N utmost point-S utmost point.Coil 24 in fact with general common motor much at one, the difference place just makes the coil of motor and motor into strip and is placed near parts in the CD-ROM drive shell 23 of the soft magnetism iron plate 21 of tray rack 22.Produce change in voltage with electronic circuit 25, and put on the solenoid 241 of coil 24, to produce the continually varying electromagnetic field, and unlike motor utilize the physical change of armature rotation to change the polarity of voltage, but, at this, the variation of the polarity of the voltage that electronic circuit 25 is produced is complete with the situation of the general mutual reverse of motor, only because the shape and the arrangement mode of the solenoid 241 of coil 24, and can the polarization S utmost point-continuous variation of the N utmost point or continuous variation magnetic field of the polarity N utmost point-S utmost point.For electronic circuit 25,, can utilize one 4017 type CMOS integrated circuit to cooperate a transistor array (transistor array) integrated circuit can constitute this kind circuit as shown in Figure 3 at this.Though in Fig. 3, be to utilize one 4017 type CMOS integrated circuit to cooperate a transistor array integrated circuit to finish electronic circuit 25, but in practical application, the electronic circuit 25 that can produce the voltage signal of the mutual changed polarity of this kind can have a variety of constituted modes, in the practicality, mostly can be with the following electronic circuit 25 of finishing of a small amount of part in the condition that takies minimum volume.
When carrying out the action of forward and back CD, electromagnetism suction and repulsion between the electromagnetic force that is produced by solenoid 241 the polarization continually varyings magnetic field and the soft magnetism iron plate 21 of coil 24, utilize electromagnetic attraction and tray rack 22 is taken in to magnetic suspension type optical disk drives 2, to allow the CD on 26 pairs of tray racks 22 of read/write head module read action, or utilize electromagnetic repulsion force and tray rack 22 is released in magnetic suspension type optical disk drives 2, to carry out the work of CD being sent or withdrawed to disc player.
Fig. 4 is the vertical view after the tray rack that is loaded with CD enters magnetic suspension type optical disk drives.As shown in Figure 4, enter the upward view of the situation behind the magnetic suspension type optical disk drives 2 for the tray rack 22 that is loaded with CD, when advancing the CD action, 241 polarization continually varyings of solenoid magnetic field S utmost point-N utmost point, the N utmost point-S utmost point by coil 24, and the electromagnetism suction and repulsion between the electromagnetic force that soft magnetism iron plate 21 is produced, utilize electromagnetic attraction and tray rack 22 is taken in to magnetic suspension type optical disk drives 2, to allow the CD on 26 pairs of tray racks 22 of read/write head module read action.At this, the read/write head in the read/write head module 26 needn't lifting, and only need carry out original focusing action to read the data content in the CD.
Fig. 5 is the vertical view after the tray rack that is loaded with CD withdraws from magnetic suspension type optical disk drives.As shown in FIG., when carrying out the action of matting dish, 241 polarization continually varyings of solenoid magnetic field S utmost point-N utmost point, the N utmost point-S utmost point by coil 24, and the electromagnetism suction and repulsion between the electromagnetic force that soft magnetism iron plate 21 is produced, utilize electromagnetic repulsion force and tray rack 22 is released in magnetic suspension type optical disk drives 2, to carry out the work of CD being sent or withdrawed to disc player.
Be the soft magnetism iron plate of magnetic suspension type optical disk drives and the thickness of coil as shown in Figure 6, with the comparison of traditional CD-ROM drive gear train thickness.As shown in FIG. as can be known, coil 24 that comprises solenoid 241 and the thickness of the thickness sum total of soft magnetism iron plate 21 less than the gear mechanism 14 of traditional type CD-ROM drive 1, and cause magnetic suspension type optical disk drives 2 will have less thickness, more do not take up space.
In the above-described embodiment, though the soft magnetism iron plate be shaped as strip and number is two, and the installation site of soft magnetism iron plate is positioned at the both sides of tray rack, coil comprises the certain solenoid of quantity, the position of coil refer to in the CD-ROM drive near the position of tray rack both sides, and its direction referred to for parallel with the soft magnetism iron plate.But in practicality, the number that soft magnetism iron plate and coil are comprised needn't limit to some extent, its form needs not to be long strip type, the installation site is not necessarily limited to above-mentioned position and direction, even with coil be installed in the tray rack, the soft magnetism iron plate is installed near the tray rack, and be not limited in the CD-ROM drive shell also to belong to may, as long as the electromagnetism suction and repulsion that soft magnetism iron plate and coil are produced be enough to push tray rack to positioning instant can.Every utilization puts on the mutual voltage that changes of polarity of coil, between near the soft magnetic material that is installed on respectively in the tray rack and the tray rack, produce the electromagnetism suction and repulsion, not via mechanism driving such as gears and directly utilize this electromagnetism suction and repulsion tray rack to be sent or withdrawed to CD-ROM drive, to reach the device that CD-ROM drive advances sheet or moves back the purpose of sheet, all be included in scope of the present invention.
Comprehensive above embodiment, magnetic suspension type optical disk drives of the present invention as can be known be because of being to utilize the electromagnetism suction and repulsion to cause the tray rack of carrying disc to move, and need not tray rack be moved; The electromagnetism suction and repulsion directly puts on the tray rack of the carrying disc in the CD-ROM drive, tray rack is moved and CD is sent and withdraws to CD driver device; This device of magnetic suspension type optical disk drives of the present invention is because coil directly is used for promoting tray rack with the repulsion that is produced between the soft magnetism iron plate, so need not utilize as mechanical hook-ups such as the employed gear mechanisms of traditional CD-ROM drive, needn't be again via the gear mechanism transmission, and,, CD-ROM drive establishes the read/write head jacking gear so needn't refilling owing to needn't use gear drive.
The above is preferred embodiment of the present invention only, is not in order to limit scope of the present invention; All other do not break away from the equivalence of being finished under the disclosed spirit and changes or modification, all should be included in the protection domain of this patent.
Claims (13)
1. magnetic suspension type optical disk drives comprises:
One optical disc tray frame drags CD in order to hold;
At least two soft magnetism iron plates are in order to producing magnetic force and to produce reciprocation with magnetic force that a coil is produced, with optical disc tray frame income/release magnetic suspension type optical disk drives; And
One CD-ROM drive shell is used the installing for this optical disc tray, soft magnetism iron plate and coil.
2. magnetic suspension type optical disk drives according to claim 1, it is characterized in that: this coil has at least two, and the electromagnetism suction and repulsion between the electromagnetic force that this coil institute polarization continually varying magnetic field and soft magnetism iron plate are produced makes the optical disc tray frame, enters or withdraw from magnetic suspension type optical disk drives.
3. magnetic suspension type optical disk drives according to claim 1 is characterized in that: the soft magnet sheet that this soft magnetism iron plate is a strip, and the direction that is provided with is parallel to the direction that is provided with of coil.
4. magnetic suspension type optical disk drives according to claim 1 is characterized in that: this soft magnetism iron plate is the dual side-edge that is arranged at the bottom of tray rack, and is parallel with the advance and retreat direction of tray rack.
5. magnetic suspension type optical disk drives according to claim 4 is characterized in that: this coil is arranged in the CD-ROM drive shell position near the soft magnetism iron plate of the strip of tray rack two bottom sides.
6. magnetic suspension type optical disk drives according to claim 1 is characterized in that: also comprise: electronic circuit, put on coil in order to the voltage that polarity is continuously changed, and in coil polarization continually varying magnetic field.
7. magnetic suspension type optical disk drives according to claim 6 is characterized in that: this electronic circuit cooperates a transistor array integrated circuit to be constituted by one 4017 type CMOS integrated circuit.
8. magnetic suspension type optical disk drives comprises:
Tray rack, this tray rack is in order to carrying disc;
At least two soft magnetism iron plates, in order to producing magnetic force and to produce reciprocation with magnetic force that coil is produced, and with the tray rack income/release magnetic suspension type optical disk drives of CD;
Electronic circuit puts on coil in order to the voltage that polarity is continuously changed, so that in coil polarization continually varying magnetic field;
The read head module focuses on action to read the data content in the CD in order to carry out; And
The CD-ROM drive shell is for the device of this soft magnetism disc, tray rack coil, electronic circuit and read head module.
9. magnetic suspension type optical disk drives according to claim 8, it is characterized in that: this coil contains at least two solenoids, and the electromagnetism suction and repulsion between the electromagnetic force that solenoid institute polarization continually varying magnetic field and soft magnetism iron plate are produced can make the optical disc tray frame enter or withdraw from magnetic suspension type optical disk drives.
10. magnetic suspension type optical disk drives according to claim 8 is characterized in that: the soft magnetism iron plate is the soft magnet sheet of strip, and the direction that is provided with is parallel to the direction that is provided with of coil.
11. magnetic suspension type optical disk drives according to claim 8 is characterized in that: this soft magnetism iron plate is arranged at the dual side-edge of the bottom of tray rack, and is parallel with the advance and retreat direction of tray rack.
12. magnetic suspension type optical disk drives according to claim 11 is characterized in that: this coil is arranged in the CD-ROM drive shell position near the soft magnetism iron plate of the strip of tray rack two bottom sides.
13. magnetic suspension type optical disk drives according to claim 8 is characterized in that: this electronic circuit is to cooperate a transistor array integrated circuit to be constituted by one 4017 type CMOS integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02101576 CN1431657A (en) | 2002-01-10 | 2002-01-10 | Magnetic suspension type optical disk drives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02101576 CN1431657A (en) | 2002-01-10 | 2002-01-10 | Magnetic suspension type optical disk drives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1431657A true CN1431657A (en) | 2003-07-23 |
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ID=4739569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02101576 Pending CN1431657A (en) | 2002-01-10 | 2002-01-10 | Magnetic suspension type optical disk drives |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1431657A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112068659A (en) * | 2020-09-11 | 2020-12-11 | 南阳理工学院 | Computer CD-ROM structure, host and computer |
-
2002
- 2002-01-10 CN CN 02101576 patent/CN1431657A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112068659A (en) * | 2020-09-11 | 2020-12-11 | 南阳理工学院 | Computer CD-ROM structure, host and computer |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |