CN2472309Y - Decline adjustable magnetic movable positioner - Google Patents
Decline adjustable magnetic movable positioner Download PDFInfo
- Publication number
- CN2472309Y CN2472309Y CN 01208992 CN01208992U CN2472309Y CN 2472309 Y CN2472309 Y CN 2472309Y CN 01208992 CN01208992 CN 01208992 CN 01208992 U CN01208992 U CN 01208992U CN 2472309 Y CN2472309 Y CN 2472309Y
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- Prior art keywords
- inclination angle
- positioning device
- changes
- movable part
- moving positioning
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- Expired - Lifetime
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Abstract
The utility model relates to a movable positioning device with changeable dip angle magnetism used for a driver, comprising a movable part, a fixing part, and a dip coil assembly; wherein, the fixing part is used to generate a shifting magnetic field, so as to enable the movable part to be shifted; the dip coil assembly is utilized to generate a leaning magnetic field to make the movable part inclined. Since the dip coil assembly is used to generate a leaning magnetic field which changes the conditions of the movable part, the inclination angle is modified, so as to acquire a more precise positioning control, enabling the driver to gain a better positioning performance, and improve the working quality of the driver.
Description
The utility model relates to a kind of changed inclination angle magnetic moving positioning device that is used on the driver.
Science and technology growing today, various data storage medium is widely used, and most data storage medium all need by a driver finish data storage, work such as read.On magnetic storage,, all has the driver of a magnetic read/write head as floppy disk, hard disk drive; On optical disc drive, as various CD, VCD, DVD or the like, also all need the driver of optical read head, and such as erasable storage devices such as MO, MD, also each needs the read/write head driver of various different types, just can finish its work.And this quasi-driver most important work no more than with read head or read/write head, fast and accurately is placed on the working point, so the usefulness of its location and degree of accuracy seem very important.
Moving positioning device on the existing driver adopts the characteristic of magnetic to realize the location more.With the Liar driver that is applied on the optical read head is example, and its structure can be with reference to the embodiment of Figure 11, Figure 12, Figure 13.
Its operation principles is identical haply, all be to utilize permanent magnet M1, M2 and fixedly yoke Y1, Y2, Y3 produce a fixed magnetic field, as electric current by focusing coil F1, F2 or when following path circle T1, T2, T3, T4, can be because the induction of electromagnetism, produce in addition different variable magnetic field, and cause described wait coil and permanent magnet between relative displacement; Need only and to control the described electric current that waits coil of flowing through, just can cause the relative displacement of different-effect.
Yet in described locating device, because the error of assembling or the problem of original design all can have the generation at inclination angle inevitably, especially when described movable part V moves on to the most inclined to one side position, the inclination angle maximum of generation.When the position of object lens read head O.L. and data storing produces unnecessary inclination angle, owing to the aberration that can produce on the optical system, therefore just can't access arrive correct data, make the work effect of described driver reduce.
The purpose of this utility model is to provide a kind of changed inclination angle magnetic moving positioning device that is used on the driver, and it can adjust the operating angle of described movable part by leaning magnetic field, so that described driver has better craftmanship.
For achieving the above object, the changed inclination angle magnetic moving positioning device that is used on the driver of the present utility model, it comprises: a movable part; One fixed part is used to produce a shifting magnetic field, so that described movable part moves; And an inclination angle coil groups, be used to produce a leaning magnetic field, so that described movable part tilts.
As mentioned above, wherein said fixed part comprises: a magnet unit group; And a yoke group, it is used for producing a magnetic loop with described magnet unit group.Wherein said magnet unit group is several permanent magnets.
As mentioned above, wherein said inclination angle coil groups is to be wound on the described yoke group, and described inclination angle coil groups comprises four inclination angle coils.
As mentioned above, have a focusing coil on the wherein said movable part, and described focusing coil is to produce a focusing magnetic field, and because the reciprocation of described leaning magnetic field and described focusing magnetic field, and make described movable part produce a rotating moment.
As mentioned above, wherein said inclination angle coil groups is to be wound on the described movable part.
As mentioned above, wherein said inclination angle coil groups is wound up as arabic numeral 8 fonts, and described inclination angle coil groups comprises an inclination angle coil.
As mentioned above, wherein said inclination angle coil groups comprises two inclination angle coils, and described two inclination angle coils are to be positioned on the not homonymy of described movable part.
As mentioned above, wherein said driver is the read/write head of optical pickup device, and has a Liar on the wherein said movable part.
Use the inclination angle magnetic moving positioning device that changes of the present utility model, can flexiblely be applied in different occasions by the utmost point, satisfied various demands; Can under the situation that does not increase structural burden, improve the function and the craftmanship of product simultaneously.
Fig. 1 is preferred embodiment one of the present utility model;
Fig. 1 a is preferred embodiment one a of the present utility model;
Fig. 2 is preferred embodiment two of the present utility model;
Fig. 2 a is preferred embodiment two a of the present utility model;
Fig. 3 is preferred embodiment three of the present utility model;
Fig. 4 is preferred embodiment four of the present utility model;
Fig. 5 a is preferred embodiment five a of the present utility model;
Fig. 5 b is preferred embodiment five b of the present utility model;
Fig. 6 a is preferred embodiment six a of the present utility model;
Fig. 6 b is preferred embodiment six b of the present utility model;
Fig. 7 is preferred embodiment seven of the present utility model;
Fig. 8 is preferred embodiment eight of the present utility model;
Fig. 9 is preferred embodiment nine of the present utility model;
Figure 10 is preferred embodiment ten of the present utility model;
Figure 11 is existing technology implementation example one;
Figure 12 is existing technology implementation example two;
Figure 13 is existing technology implementation example three.
The utility model is a kind of changed inclination angle magnetic moving positioning device that is used on the driver.It is an orientation angle of adjusting a movable part V by an inclination angle coil groups, so that described driver can have a preferable craftmanship.
With reference to Figure 1 shows that preferred embodiment one of the present utility model.Four inclination angle coil A1, A2, A3, A4 on yoke, have been twined respectively, as long as control is by the electric current of described inclination angle coil, produce a leaning magnetic field, just can be to the focusing magnetic field of described focusing coil F generation, cause the effect of strengthening or reducing in four corners, and make described movable part V produce.The situation that adds the above movable part can be with reference to preferred embodiment of the present utility model one a shown in the figure 1a.Described focusing coil is to be wound on the described movable part V, and also has a Liar O.L. on the described movable part, thus as long as by the described focusing coil of control, just can adjust the angle of described Liar, so that the effect of read-write is better.
Now be described in further detail its working method.With Fig. 1 is example, and when inclination angle coil A1, A3 are passed to the electric current in the magnetic field of opposing permanent magnet M1, M2, and when A2, A4 no power, then the focusing coil magnetic field that is positioned at the X+ half-plane is weakened, and the magnetic field of X-half-plane is constant; This moment is when being passed to the electric current of generation Z+ direction magnetic force when focusing coil, and summation magnetic force can produce+moment of Θ y direction.When focusing coil is passed to the electric current that produces Z-direction magnetic force, summation magnetic force can produce-moment of Θ y direction.
In like manner, when inclination angle coil A1, A2 are passed to the electric current in the magnetic field of opposing permanent magnet M1, M2, and when A3, A4 no power, when focusing coil was passed to the electric current that produces Z+ direction magnetic force, summation magnetic force can produce+moment of Θ x direction.When focusing coil is passed to the electric current that produces Z-direction magnetic force, summation magnetic force can produce-moment of Θ x direction.The moment of utilizing aforesaid way to produce can be adjusted Liar O.L., the inclination angle on Θ x and two direction of principal axis of Θ y simultaneously.
Figure 2 shows that preferred embodiment two of the present utility model, it is that yoke with embodiment one changes the right neither change of working method a little.It adds the situation of movable part, can be with reference to preferred embodiment of the present utility model two a shown in the figure 2a.
Shown in Figure 3 is preferred embodiment three of the present utility model, and it is another embodiment of the present utility model, is to twine an inclination angle coil on described movable part, and forms the winding of arabic numeral 8 fonts., can be produced-moment of Θ y direction by by the time at described inclination angle coil as the electric current of icon direction; If current opposite in direction, then the moment direction is also opposite.Can reach the effect that described movable part is tilted in this way equally, and also can save the making of coiling.Among the figure and disclosed the different embodiments of movable part with Liar.
Figure 4 shows that preferred embodiment four of the present utility model, it also is an another kind of embodiment of the present utility model, be to increase an inclination angle coil A1, A2 respectively at the two ends of described movable part, when direction of current as shown in the figure the time, the moment of meeting generation+Θ y direction, otherwise then can-moment of Θ y direction, with control described movable part inclination.The advantage of this embodiment is a simple structure, and the coil total length is less, weight is lighter.
Fig. 5 a is depicted as preferred embodiment five a of the present utility model, and the structure of preferred embodiment of the present utility model five b shown in it and Fig. 5 b is identical.Focusing coil F1, F2 are the magnetic field that is used to produce focus direction; When being applied to the utility model, can be directly described focusing coil as the inclination angle coil, by the electric current of adjusting by focusing coil (being the inclination angle coil), just can adjust the inclined degree of described movable part.Fig. 5 a and Fig. 5 b are to be the movable part embodiment different with Liar.
Fig. 6 a is depicted as preferred embodiment six a of the present utility model, and Fig. 6 b is depicted as preferred embodiment six b of the present utility model, they are that structure with Fig. 5 a and Fig. 5 b cuts half, can reach same effect, and can implement movable part and Liar in a different manner according to different needs.
The structure of embodiment five a and embodiment five b also can be done multiple variation.In preferred embodiment of the present utility model seven shown in Figure 7, it follows the path coil structures for merging; Figure 8 shows that preferred embodiment eight of the present utility model, it is that the structure of embodiment seven is cut half; Figure 9 shows that preferred embodiment nine of the present utility model, it is that the yoke of Fig. 7 is disassembled into two parts with permanent magnet; Figure 10 is preferred embodiment ten of the present utility model, and it is that the structure of embodiment nine is cut half.
The embodiment that these are derived has identical effect, yet can take different embodiments according to different occasions, to reach the purpose that reduces permanent magnet, coil or weight.In addition, these embodiments also as long as utilize the focusing coil that originally just possesses, just can reach the purpose of control, do not need to increase extra loop construction.
In sum, we can get following 2 conclusions: one, used the inclination angle magnetic moving positioning device that changes of the present utility model, can flexiblely be applied in different occasions by the utmost point, satisfied various demands.Two, use the inclination angle magnetic moving positioning device that changes of the present utility model, can under the situation that does not increase structural burden, improve the function and the craftmanship of product.Therefore, the utility model is the original idea that has a market competitiveness for.
Claims (15)
1. changed inclination angle magnetic moving positioning device that is used on the driver, it comprises:
One movable part;
One fixed part is used to produce a shifting magnetic field, so that described movable part moves; And
One inclination angle coil groups is used to produce a leaning magnetic field, so that described movable part tilts.
2. the inclination angle magnetic moving positioning device that changes as claimed in claim 1 is characterized in that described fixed part comprises:
One magnet unit group; And
One yoke group, it is used for producing a magnetic loop with described magnet unit group.
3. the inclination angle magnetic moving positioning device that changes as claimed in claim 2 is characterized in that described magnet unit group is several permanent magnets.
4. the inclination angle magnetic moving positioning device that changes as claimed in claim 1 is characterized in that described inclination angle coil groups is to be wound on the described yoke group.
5. the inclination angle magnetic moving positioning device that changes as claimed in claim 4 is characterized in that having a focusing coil on the described movable part.
6. the inclination angle magnetic moving positioning device that changes as claimed in claim 5 is characterized in that described focusing coil produces a focusing magnetic field.
7. the inclination angle magnetic moving positioning device that changes as claimed in claim 6 is characterized in that, because the reciprocation of described leaning magnetic field and described focusing magnetic field, and make described movable part produce a rotating moment.
8. the inclination angle magnetic moving positioning device that changes as claimed in claim 7 is characterized in that described inclination angle coil groups comprises four inclination angle coils.
9. the inclination angle magnetic moving positioning device that changes as claimed in claim 1 is characterized in that described inclination angle coil groups is to be wound on the described movable part.
10. the inclination angle magnetic moving positioning device that changes as claimed in claim 9 is characterized in that described inclination angle coil groups is wound up as arabic numeral 8 fonts.
11. the inclination angle magnetic moving positioning device that changes as claimed in claim 10 is characterized in that described inclination angle coil groups comprises an inclination angle coil.
12. the inclination angle magnetic moving positioning device that changes as claimed in claim 9 is characterized in that described inclination angle coil groups comprises two inclination angle coils.
13. the inclination angle magnetic moving positioning device that changes as claimed in claim 12 is characterized in that described two inclination angle coils are positioned on the not homonymy of described movable part.
14. the inclination angle magnetic moving positioning device that changes as claimed in claim 1 is characterized in that described driver is the read/write head of optical pickup device.
15. the inclination angle magnetic moving positioning device that changes as claimed in claim 14 is characterized in that having a Liar on the described movable part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01208992 CN2472309Y (en) | 2001-04-12 | 2001-04-12 | Decline adjustable magnetic movable positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01208992 CN2472309Y (en) | 2001-04-12 | 2001-04-12 | Decline adjustable magnetic movable positioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2472309Y true CN2472309Y (en) | 2002-01-16 |
Family
ID=33628952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01208992 Expired - Lifetime CN2472309Y (en) | 2001-04-12 | 2001-04-12 | Decline adjustable magnetic movable positioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2472309Y (en) |
-
2001
- 2001-04-12 CN CN 01208992 patent/CN2472309Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: DIWEIAN CO. Free format text: FORMER NAME OR ADDRESS: TAIDA ELECTRONIC INDUSTRY CO LTD |
|
| CP03 | Change of name, title or address |
Address after: American California Patentee after: Discovision Associates Address before: Xingbang Road, Taoyuan County in Taiwan province hill village 31 No. 1 Patentee before: Delta Optoelectronics Inc. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110412 Granted publication date: 20020116 |