CN1674113A - Tilt adjuster for optical disk driver - Google Patents
Tilt adjuster for optical disk driver Download PDFInfo
- Publication number
- CN1674113A CN1674113A CN 200410017223 CN200410017223A CN1674113A CN 1674113 A CN1674113 A CN 1674113A CN 200410017223 CN200410017223 CN 200410017223 CN 200410017223 A CN200410017223 A CN 200410017223A CN 1674113 A CN1674113 A CN 1674113A
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- China
- Prior art keywords
- light picker
- picker substrate
- substrate
- hinge axis
- along
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Abstract
A device for adjusting tilt of optical disc driver consists of hinge shaft, spring, shaft hole, hinge bolt and tilt servo unit to tilt-adjust light pickup baseplate. The device is set on top side of rotary baseplate between the rotary baseplate and the light pickup baseplate as well to keep certain distance to the rotary baseplate, it can prevent optical disc baseplate form wobbling and furthermore can control noise as well as deformation caused by wobbling.
Description
(1) technical field
The invention relates to the inclination adjusting device of CD drive, refer in particular to about preventing rocking of optic disc base board, thereby control is owing to rock the noise of generation and the inclination adjusting device of a kind of CD drive of distortion.
(2) background technology
CD drive be a kind of on the recording medium of optical disc shapes the light of light source such as irradiating laser, thereby can be on recording medium recorded information or read the device of the information of playing record.
CD drive be provided with can be on CDs such as CD, CD-R, CD-RW, DVD, DVD-R, DVD-RW, DVD+RW, DVD-RAM the light picker of irradiating laser, when there is the pitch angle error in light picker at optical axis, will produce the distortion of signal, and cause shake to wait the phenomenon of deterioration, thereby cause the confusion of signal Processing.In addition, when situations such as the error percentage of the axis of the rotating shaft of rotation driving CD etc. and the warpage of CD radial direction and distortion increased the weight of, the possibility that produces the signal Processing error will be bigger.Consider this point, just inclination adjusting device need be set, be used for detecting the warpage of the radial direction of CD,, adjust the degree of tilt of light picker then according to the result who detects.
Fig. 1 is the CD drive planimetric map in the middle of the prior art.Fig. 2 is the outboard profile of Fig. 1.Fig. 3 to Fig. 5 is respectively the amplification sectional view in the hinge bolt zone of Fig. 2.
As shown in the figure, CD drive comprises: rotation drives the rotating shaft 21 of CD 11; Be provided with the tabular shaft base plate 23 of rotating shaft 21; The direction that parallels along rotation L1 and the tabular light picker substrate 25 of shaft base plate 23 settings spaced apart with rotating shaft 21; Be arranged on the light picker substrate 25, from the light picker 29 of the light such as following side direction CD 11 irradiating lasers of CD 11.
At the upside of light picker substrate 25,, be set side by side with a pair of guide rod 28 mutually along the radial direction of CD 11.Be combined with the both sides of the edge of light picker 29 on the guide rod 28, and can slide.
In addition, along the radial direction of CD 11, a side of rotating shaft 21 is provided with hinge axis 31, and the one end is fixed on the shaft base plate 23, an other end is outstanding towards light picker substrate 25, and the termination keeps certain intervals (G) to be attached to the inside of the axis hole 27 that is provided with on the light picker 25.In the upper end of hinge axis 31, from the upside of light picker substrate 25 screw hole 32 is set along the axle center, thus can be in conjunction with the screw body 40 of hinge bolt 37.And, hinge bolt 37, for being provided with the screw of pad, it is that gasket part 39 and screw head 38 are wholely set and obtain, and the diameter of gasket part 39 can prevent upwards breaking away from of light picker substrate 25 greater than the diameter of axis hole 27.Be provided with around the hinge axis 31 and be combined with the spring 47 that applies elastic force to the downside of light picker substrate 25, thus can be so that light picker substrate 25 can be realized Elastic Contact with gasket part 39.
Radial direction along CD 11, the edge part of the light picker substrate 25 distant apart from rotating shaft 21 is provided with and tilts to reconcile the oblique servo portion 51 of light picker substrate 25, and it is mobile to allow light picker substrate 25 be with hinge bolt 37 that the center comes and goes along above-below direction.
According to this structure, when using normal CD 11, as shown in Figure 3, light picker substrate 25 parallels setting with CD 11, light picker substrate 25 obtains the elasticity support of spring 47 at this moment, the bottom surface of the top and gasket part 39 of light picker substrate 25 contacts closely, keeps horizontality, and keeps certain intervals (G) between the external diameter of the aperture surface of axis hole 27 and hinge axis 31.
In addition, CD 11 produces when crooked to upside along radial direction, as shown in Figure 4, and after the curved detection inductor 30 that is provided with on the light picker 29 detects amount of bow, cam drive motor 54 will rotate, and makes that the optical axis L2 of light picker 29 and CD 11 are perpendicular.Corresponding to amount of bow, light picker substrate 25 side shifting that can make progress, the part that the thickness of cam 53 is big just can touch cam contact site 55.Like this, radial direction along with CD 11, centre line L up and down 3 with hinge bolt 37 is a benchmark, form the contact point 42a of gasket part 39 and light picker substrate 25 in the outside, this contact point 42a becomes rotation center, the Outboard Sections of the contact point 42a of light picker substrate 25 rises, and inside part descends.
But, the inclination adjusting device of existing CD drive, for can tilt adjustments light picker substrate 25, the inside of axis hole 27 keeps having the upper end that certain interval G accommodates hinge axis 31, thereby can allow the bottom faces of top and gasket part 39 of light picker substrate 25 be in contact with one another, therefore, light picker substrate 25 can rock the amount of G along horizontal direction, do the time spent when receiving horizontal direction external force, will produce impact with hinge axis 31 contacts, not only noise can be produced, and the distortion of light picker substrate 25 and hinge axis 31 can be caused.
In addition, CD 11 produces downwards or the flexural deformation that makes progress along radial direction, and light picker substrate 25 is when also having carried out corresponding tilt adjustments, as shown in Figure 4 and Figure 5, during tilt adjustments, form the contact point 42a of center of rotation, 42b will separate far away with the centre line L 3 of hinge bolt 37, so, even identical tilt quantity, according to the difference of its direction, not only the rotation amount of cam drive motor 54 need be distinguished difference, and, the elastic force of spring 47 concentrates on contact point 42a, 42b, therefore, gasket part 39 can produce distortion, and, if distortion is serious, hinge bolt 37 also might break away from from hinge axis 31.
(3) summary of the invention
The present invention proposes in order to address the above problem, and the object of the present invention is to provide a kind of rocking of optic disc base board that prevent, and then control is owing to the inclination adjusting device of a kind of CD drive of noise that rocks generation and distortion.
To achieve these goals, the inclination adjusting device of CD drive of the present invention, promptly, the shaft base plate that is used for rotating the rotating shaft that drives CD is spaced apart with being provided with, rotation direction along above-mentioned rotating shaft is arranged on the upside of above-mentioned shaft base plate, and is arranged between the light picker substrate of supporting light picker, be used for reconciling the inclination adjusting device of above-mentioned light picker, it is characterized in that comprising with respect to a kind of CD drive of the inclination of above-mentioned shaft base plate generation:
Hinge axis, a side are fixed on the above-mentioned shaft base plate, and an other side is outstanding towards above-mentioned light picker substrate along the rotation direction of above-mentioned rotating shaft;
Spring, be arranged on above-mentioned hinge axis around, along the projected direction of above-mentioned hinge axis, apply elastic force to above-mentioned light picker substrate;
Axis hole corresponding to above-mentioned hinge axis, connects the plate face setting of above-mentioned light picker substrate;
Hinge bolt, be provided with light picker substrate contacts portion, this light picker substrate contacts portion has than the radius of the above-mentioned axis hole circular-arc cross section of deep camber more, be connected with above-mentioned hinge axis by above-mentioned axis hole, thus can be so that above-mentioned light picker substrate contacts portion contacts the edge of above-mentioned axis hole;
Oblique servo portion along the radial direction of above-mentioned CD, is arranged on the outer ledge of above-mentioned light picker substrate, is the above-mentioned light picker substrate of centroclinal adjustment with above-mentioned hinge bolt.
Here, the external diameter of the upper area of above-mentioned hinge axis is less than the internal diameter of above-mentioned axis hole, simultaneously, the top along the thickness direction of above-mentioned light picker substrate on the light picker substrate and below between, thereby can form (gap) at interval, and then can be so that above-mentioned light picker substrate can carry out tilt adjustments
If the upper end of above-mentioned hinge axis can be provided with the depressed part that forms curved surface, will be better thereby can contact effect with above-mentioned light picker substrate contacts portion realization face.
Effect of the present invention:
The inclination adjusting device of a kind of CD drive provided by the invention that has above-mentioned formation and operate as mentioned above can prevent rocking of optic disc base board, and then control is because the noise that rocks generation and the distortion of optic disc base board.
In addition, the inclination adjusting device of a kind of CD drive provided by the invention, the linearity that realizes the edge of light picker substrate contacts portion and axis hole contacts, thereby with prior art because stress concentrates the disengaging of the gasket part distortion cause or hinge bolt different, the present invention can dispersive stress, thereby can prevent part distortion and disengaging.
And, inclination adjusting device according to a kind of CD drive of the present invention, with in the past be that center light pick-up substrate moves along the radial direction of CD with the two ends of gasket part, therefore the driving direction along cam drive motor can produce very big rotation amount difference difference, the present invention is provided with turning axle at the two ends of shaft hole, thereby can be along sense of rotation, it is poor to dwindle rotation amount relatively.
For further specifying above-mentioned purpose of the present invention, design feature and effect, the present invention is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the CD drive planimetric map in the middle of the prior art;
Fig. 2 is the outboard profile of Fig. 1;
Fig. 3, Fig. 4, Fig. 5 are respectively the amplification sectional view in the hinge bolt zone of Fig. 2;
Fig. 6 is the outboard profile of an embodiment of the inclination adjusting device of CD drive of the present invention;
Fig. 7 is the amplification sectional view in the hinge bolt zone of Fig. 6;
Fig. 8, Fig. 9, Figure 10 and Figure 11 are respectively the synoptic diagram of operation of inclination adjusting device of the CD drive of key diagram 6.
The symbol description of major part in the accompanying drawing:
11, CD 21, rotating shaft
23, shaft base plate 25, light picker substrate
27, axis hole 31, hinge axis
34, depressed part 37, hinge bolt
41, light picker substrate contacts portion 47, spring
51, oblique servo portion 53, cam
54, cam drive motor 55, cam contact site
(5) embodiment
Embodiment to the inclination adjusting device of CD drive of the present invention is elaborated below with reference to accompanying drawings.
Fig. 6 is the outboard profile of an embodiment of the inclination adjusting device of CD drive of the present invention.Fig. 7 is the amplification sectional view in the hinge bolt zone of Fig. 6.Fig. 8 to Figure 11 is respectively the synoptic diagram of operation of inclination adjusting device of the CD drive of key diagram 6.
For identical with structure noted earlier, and identical part, for the convenience of description of drawings, will use reference marks as hereinbefore.
As shown in the figure, CD drive comprises: rotation drives the rotating shaft 21 of CD 11; Be provided with the tabular shaft base plate 23 of rotating shaft 21; The direction that parallels along rotation L1 and the tabular light picker substrate 25 of shaft base plate 23 settings spaced apart with rotating shaft 21; Be arranged on the light picker substrate 25, from the light picker 29 of the light such as following side direction CD 11 irradiating lasers of CD 11; At the upside of light picker substrate 25,, be set side by side with a pair of guide rod 28 mutually along the radial direction of CD 11; Be combined with the both sides of the edge of light picker 29 on the guide rod 28, and can slide.
In addition, the inclination adjusting device of this CD drive comprises:
Hinge bolt 37, be provided with light picker substrate contacts portion 41, described light picker substrate contacts portion 41 has than the radius of the above-mentioned axis hole 27 circular-arc cross section of deep camber more, be connected with above-mentioned hinge axis 31 by above-mentioned axis hole 27, thereby can be so that the edge of the above-mentioned axis hole 27 of above-mentioned light picker substrate contacts portion's 41 contacts, that is, hinge bolt 37 can make the light picker substrate contacts portion 41 at axis hole 27 upsides of light picker 25 touch rotating shaft 31;
The external diameter of the upper area of above-mentioned hinge axis 31 is less than the internal diameter of above-mentioned axis hole 27, simultaneously, the top along the thickness direction of described light picker substrate 25 on described light picker substrate 25 and below between, thereby can form (G) at interval, and then can be so that described light picker substrate 25 can carry out tilt adjustments.
The lower end of hinge axis 31 is carried out caulking joint (caulking) processing and is fixed on shaft base plate 23, the axle center of upper area is provided with screw hole 32, can realize the screw combination of hinge bolt 37.The upper end of hinge axis 31 is provided with the depressed part 34 that forms curved surface, can realize contacting with the face of the light picker substrate contacts portion 41 of the following hinge bolt that will talk about 37, and lower region thereof is provided with the spring support member 35 that prolongs along radial direction, thereby can realize the support of the lower end of spring 47 is connected.
Hinge bolt 37 comprises: head 38; Light picker substrate contacts portion 41 is arranged on the downside of head 38, has the circular-arc cross section than the curvature of the expanded in diameter of axis hole 27, contacts with the edge of axis hole 27; Screw body 40 carries out screw with the screw hole 32 of hinge axis 31 and combines.
According to said structure, carry out on the shaft base plate 23 hinge axis 31 that obtains after caulking joint is handled around respectively in conjunction with spring 47 is set, and light picker substrate contacts portion 41 is set, can allow axis hole 27 drop on the upper end of hinge axis 31.Then, from the upside of light picker 25, by axis hole 27, the screw body 40 of hinge bolt 37 is connected on the screw hole 32 of hinge axis 31 after, light picker substrate contacts portion 41 will realize contacting with the line at the edge of axis hole 27.
The upper end of hinge axis 31 is arranged between the top and bottom of light picker substrate 25 with respect to the thickness direction of light picker substrate 25.Spring 47 obtains a little compression and applies elastic force with the elastic force that contraction obtains to light picker substrate 25, thereby can realize the edge of axis hole 27 and the mutual Elastic Contact between the light picker substrate contacts portion 41.Like this, just can prevent rocking of light picker substrate 25, and suppress owing to rocking noise and the part distortion that produces.
In addition, when CD 11 when radial direction produces upwards crooked, as shown in Figure 8, after the curved detection inductor 30 (as shown in Figure 1) that is provided with on the light picker 29 detects amount of bow, cam drive motor 54 will rotate, and makes the optical axis L2 and the CD 11 perpendicular (90 °) of light picker 29.Corresponding to amount of bow, light picker substrate 25 side shifting that can make progress, the part that the thickness of cam 53 is big just can touch cam contact site 55.Like this, as shown in Figure 9, along the radial direction of CD 11, form the contact point 44a of axis hole 27 and light picker substrate contacts portion 41 in 3 outsides of centre line L up and down of hinge bolt 37, with this contact point 44a is rotation center, and the Outboard Sections of contact point 44a rises, and inside part descends.
Though the present invention describes with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, should understand and wherein can make variations and modifications and do not break away from the present invention in a broad sense, so be not as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claims of the present invention variation, the distortion of the above embodiment.
Claims (3)
1, a kind of inclination adjusting device of CD drive, be with to be provided with the shaft base plate that is used for rotating the rotating shaft that drives CD spaced apart, rotation direction along described rotating shaft, be arranged on the upside of described shaft base plate, and be arranged between the light picker substrate of supporting light picker, be used for reconciling the inclination adjusting device of described light picker, it is characterized in that comprising with respect to a kind of disc drives of the inclination of described shaft base plate generation:
Hinge axis, a side are fixed on the described shaft base plate, and an other side is along the rotation direction of described rotating shaft, and is outstanding towards described light picker substrate;
Spring, be arranged on described hinge axis around, along the projected direction of described hinge axis, apply elastic force to described light picker substrate;
Axis hole corresponding to described hinge axis, connects the plate face setting of described light picker substrate;
Hinge bolt, be provided with light picker substrate contacts portion, described light picker substrate contacts portion has than the radius of the described axis hole circular-arc cross section of deep camber more, be connected with described hinge axis by described axis hole, thus can be so that described light picker substrate contacts portion contacts the edge of described axis hole;
Oblique servo portion along the radial direction of described CD, is arranged on the outer ledge of described light picker substrate, is the center with described hinge bolt, the described light picker substrate of tilt adjustments.
2, the inclination adjusting device of CD drive as claimed in claim 1 is characterized in that:
The external diameter of the upper area of described hinge axis is less than the internal diameter of described axis hole, simultaneously, the top along the thickness direction of described light picker substrate on described light picker substrate and below between, thereby can form at interval, and then can be so that described light picker substrate can carry out tilt adjustments.
3, the inclination adjusting device of CD drive as claimed in claim 1 is characterized in that:
The upper end of described hinge axis is provided with the depressed part that forms curved surface, thereby can contact with described light picker substrate contacts portion realization face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410017223 CN1674113A (en) | 2004-03-26 | 2004-03-26 | Tilt adjuster for optical disk driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410017223 CN1674113A (en) | 2004-03-26 | 2004-03-26 | Tilt adjuster for optical disk driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1674113A true CN1674113A (en) | 2005-09-28 |
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ID=35046592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410017223 Pending CN1674113A (en) | 2004-03-26 | 2004-03-26 | Tilt adjuster for optical disk driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1674113A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129871A (en) * | 2010-01-20 | 2011-07-20 | 日立-Lg数据存储韩国公司 | Optical disc drive |
-
2004
- 2004-03-26 CN CN 200410017223 patent/CN1674113A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129871A (en) * | 2010-01-20 | 2011-07-20 | 日立-Lg数据存储韩国公司 | Optical disc drive |
| CN102194490A (en) * | 2010-01-20 | 2011-09-21 | 日立-Lg数据存储韩国公司 | Optical disc drive |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |