CN1797566A - Light picking device of optical disk driver - Google Patents
Light picking device of optical disk driver Download PDFInfo
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- CN1797566A CN1797566A CNA2004100992450A CN200410099245A CN1797566A CN 1797566 A CN1797566 A CN 1797566A CN A2004100992450 A CNA2004100992450 A CN A2004100992450A CN 200410099245 A CN200410099245 A CN 200410099245A CN 1797566 A CN1797566 A CN 1797566A
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- bobbin
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- dustproof sheet
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Abstract
The invention relates to an optical pickup for a CD driver, comprising: an optical pickup frame with either end connected with a guide shaft, driving with the guide shafts; lens on the top end of the optical pickup frame; focusing and tracking bobbin for focusing the light emitted from a light source onto the CD; a shield with a central through hole, arranged on the top end of the bobbin for protecting the bobbin; dust proof plate, arranged around the through hole. The invention can prevent the damage to the bobbin.
Description
(1) technical field
The invention relates to CD drive, especially about illumination is mapped on the CD, and the optical Pickup device of a kind of CD drive that the light that the storage surface of CD is oppositely returned is assembled.
(2) background technology
CD drive is a kind of CD rotation that can make disc-shape, and with signal storage to the signal storage face of CD or will be stored in the device that the signal on the signal storage face of CD reads out.This CD drive is known as CD Player, DVD player, CD-RW etc. according to the kind or the function of CD.
But, in above-mentioned CD drive optical Pickup device be with signal storage on CD or DVD, or will be stored in signal on CD or the DVD and read out necessaryly, it all must use in the ordinary course of things.Therefore, will describe to foundation the present invention with according to the situation of conventional art below.Here, be that example describes just for the narration of CD Player with an embodiment of above-mentioned CD drive, just can carry out detailed understanding by explanation to foundation the present invention with according to the situation of conventional art.
Fig. 1 is the planimetric map of expression according to the CD Player formation of conventional art.Fig. 2 is that expression has the planimetric map with the optical Pickup device of formation different structure shown in Figure 1.Fig. 3 is the summary sectional view of expression according to the formation of A-A line shown in Figure 2.Represented the state that pallet 8 exposes to the outside of player by inlet (not shown) among Fig. 1 here.In addition, though inequality with the shape of optical Pickup device shown in Figure 1 at optical Pickup device shown in Figure 2.But their formation is identical.Therefore, illustrated with regard to distinguishing no longer respectively for optical Pickup device illustrated in figures 1 and 2.
As shown in the figure, substrate 1 forms the skeleton of CD Player.Be provided with the through hole device of rough one-tenth 4 angular shapes at the central part of aforesaid substrate 1, above-mentioned through hole device is provided with optical pickup base 2.
Above-mentioned optical pickup base 2 its rear end parts support aforesaid substrate 1 by shockproof mouthful of 2a.Above-mentioned shockproof mouthful of 2a generally is to use the rubber-like material.Like this, it is when supporting to optical pickup base 2 on the substrate 1, and the vibrations and the noise that produce between blocking-up optical pickup base and the substrate transmit.
Above-mentioned optical pickup base 2 is provided with the main shaft engine that CD (Compact Disk) (not shown) is rotated.Upper end at above-mentioned main shaft engine is provided with rotating disk, thereby mounted thereto CD is rotated along with the rotation of main shaft engine.Being provided with in above-mentioned optical pickup base 2 can be with the device of optical Pickup device 3 according to the axis of guide 7 channeling conducts.The structure of this optical Pickup device 3 roughly is made of following components: i.e. light picker frame 4 and bobbin 5, and shade 6.
Above-mentioned light picker frame 4 is being brought into play the effect of the agent structure of optical Pickup device 3.That is to say that the two ends of light picker frame 4 are connected with the axis of guide 7, be provided with bobbin 5 and shade 6 in the top.
Be provided with camera lens 6a in the upper end of above-mentioned bobbin 5, it can make the light that sends from light source assemble and shine to CD.Above-mentioned bobbin 5 is provided with focusing coil (not shown) and tracking coil (not shown), and they support according to coil spring (not shown).Therefore, to above-mentioned focusing coil and tracking coil supply power, under the effect of consequent electric field and the magnetic force that produces by magnet, just can move by above-mentioned bobbin 5 by coil spring, thus can be to focusing and tracing process be regulated.
Shade 6 constitutes the outward appearance of above-mentioned bobbin 5.Because above-mentioned bobbin 5 is core inscapes of CD Player that the signal in the CD is read.Therefore, the effect of above-mentioned shade 6 is protected above-mentioned bobbin 5 exactly.So, just above-mentioned shade 6 is arranged on the upper end of above-mentioned bobbin 5.
Be provided with through hole 6a in the centre of this shade 6, the effect of above-mentioned through hole 6a is exactly that the camera lens 5a in the centre that is installed in above-mentioned bobbin 5 is connected with the CD surface.In order not influence the irradiation of the light that sends from above-mentioned camera lens 5a, and this through hole 6a is made into the shape on plane, and it and above-mentioned camera lens 5a are provided with certain spacing distance CD.That is to say that through hole 6a is a big relatively through hole of area than the camera lens 5a of above-mentioned flat shape.
On the other hand, for CD is loaded and unloads, pallet 8 relies on the driving force of loading engine (not shown) that player is promoted to outside and inside.On this pallet 8, be provided with the CD installed surface 8a that can place CD.In addition, be provided with CD door 8b at the front end of above-mentioned pallet 8, thereby the inlet of player is opened and closed selectively.
Label symbol shown in the drawing 9 is exactly a clamper, and label symbol 9a is fixed on anchor clamps on the above-mentioned rotating disk with CD.
As mentioned above, have in the CD Player of said structure according to original technology, the rack drives device (not shown) of the driving force of above-mentioned loading engine by above-mentioned driven wheel and chimeric transmission of the tooth bar (not shown) of pallet 8, pallet 8 slides to the front and back of substrate 1 and passes in and out player device.That is to say, become the pallet 8 of tetragonal shape to give prominence to setting, thereby conveniently in playing process, CD is changed to the place ahead of aforesaid substrate 1.Simultaneously, after the replacing of finishing CD, it just enters the inside of substrate 1.
The CD that loads to the inside of player enters on the rotating disk, fixes by anchor clamps 9a then.In this state, carry out high speed rotating by the main shaft engine.At this moment, optical Pickup device 3 is along with the axis of guide 7 moves, thereby the signal storage face of signal from CD read out.
But as mentioned above, there is following problem in the player device that has said structure according to original technology.
That is to say, by inlet inside and the outside of pallet 8 to player driven according to conventional art.At this moment, between the surface, inside of the appearance surfaces of pallet 8 and inlet, form an interval (gap).Like this, foreign matter such as dust will be invaded to the inside of player at interval by this.Like this, this foreign matter is invaded by the inside to player between through hole 6a and the camera lens 5a, and attached on the bobbin 5.Therefore, after such foreign matter is invaded, will bring out bobbin 5a and break down or wrong sex work occurs.At this moment, even camera lens 5a is cleaned, can not read the CD canned data by bobbin 5.Simultaneously, can not correctly carry out trace command.This is its existing problem.
(3) summary of the invention
The present invention proposes for addressing the above problem.The object of the present invention is to provide a kind of optical Pickup device of CD drive, outstanding in the above a dustproof sheet being set, thereby can prevent that foreign matter such as dust from invading to the inside of bobbin by the through hole that forms on shade.
To achieve these goals, the optical Pickup device of CD drive of the present invention is made of following components: two ends are connected with the axis of guide respectively, and the light picker frame that drives along with the above-mentioned axis of guide; Be arranged on the upper end of above-mentioned light picker frame, camera lens is installed; In order to gather the bobbin of focusing and following the tracks of on the above-mentioned CD from the light that light source sends by camera lens; Be installed in the upper end of above-mentioned bobbin, above-mentioned bobbin is protected, form the shade of through hole for the light that sends from above-mentioned camera lens can be shone the signal storage face of above-mentioned CD in the centre; Invade and the dustproof sheet that is provided with at the periphery of the through hole of above-mentioned shade to above-mentioned bobbin by above-mentioned through hole in order to prevent foreign matter etc.
Width along above-mentioned dustproof sheet is provided with the periphery of an end according to above-mentioned through hole continuously, and its other end is given prominence to setting to the center position of above-mentioned through hole in not influencing the scope that light that above-mentioned camera lens sends shines CD.
Above-mentioned dustproof sheet is arranged on the bottom surface of above-mentioned shade.In general, above-mentioned dustproof sheet all is to use material with flexibility to form.
Effect of the present invention:
As mentioned above, the optical Pickup device according to CD drive of the present invention has following good result.
By the through hole that on shade, forms dustproof sheet is given prominence to setting, thereby can stop foreign matters such as dust in bobbin, to permeate.Therefore; blocked foreign matter such as dust according to the optical Pickup device of CD drive of the present invention to the device internal penetration; so just can protect well, thereby can prevent that bobbin from occurring because of being subjected to from the influence of the foreign matters such as dust of outside intrusion situations such as damage taking place bobbin.Therefore, it has the excellent protection effect.
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 planimetric map of expression according to the CD Player formation of conventional art.
Fig. 2 is that expression has the planimetric map with the optical Pickup device of formation different structure shown in Figure 1.
Fig. 3 is the summary sectional view of expression according to the formation of A-A line shown in Figure 2.
Fig. 4 is the planimetric map of expression according to the formation of the embodiment of optical Pickup device of the present invention.
Fig. 5 is the summary sectional view that expression constitutes according to B-B line shown in Figure 4.
The symbol description of major part in the accompanying drawing:
10: light picker frame 20: bobbin
21: camera lens 30: shade
31: through hole 33: dustproof sheet
(5) embodiment
Below, with reference to the accompanying drawings the embodiment according to the optical Pickup device of CD drive of the present invention is described in detail.
Here, describe with regard to using identical label symbol for the parts identical with the inscape of foundation conventional art, this point should be careful.
Fig. 4 is the planimetric map of expression according to the formation of the desirable embodiment of optical Pickup device of the present invention.Fig. 5 is the summary sectional view that expression constitutes according to B-B line shown in Figure 4.
As shown in the figure, light picker frame 10 is being brought into play the effect of optical Pickup device main body.That is to say that the two ends of above-mentioned light picker frame 10 are connected with the axis of guide 7, be provided with bobbin 20 and shade 30 in the top.
Be provided with camera lens 21 in the upper end of above-mentioned bobbin 20, thereby the light that sends from light source can be assembled and shine on the CD.Above-mentioned bobbin 20 is provided with focusing coil (not shown) and the coil (not shown) of leaping, and their rely on coil spring (not shown) to support.Therefore,,, under the effect of consequent electric field and the magnetic force that produces by magnet, above-mentioned bobbin 20 is moved, thereby above-mentioned focusing and tracing process are regulated to above-mentioned focusing coil and tracking coil supply power by coil spring.
Above-mentioned shade 30 constitutes the outward appearance of above-mentioned bobbin 20, thereby can protect above-mentioned bobbin 20, so that it avoids the infringement that causes from external force.This is because above-mentioned bobbin 20 is the core components that constitute the player that the signal that is stored on the CD is read.Therefore, must guarantee that above-mentioned bobbin 20 accurately moves within the scope of several Um.So, above-mentioned shade 30 should be arranged on the upper end position of above-mentioned bobbin 20.
Be provided with through hole 31 in the center of this shade 30.The effect of above-mentioned through hole 31 is that the camera lens 21 that will be arranged on the center of above-mentioned light picker 10 is connected with the CD surface, thereby can guarantee can not influence irradiation to CD from the light that above-mentioned camera lens 21 sends.As shown in Figure 4, it is to become the camera lens 21 of flat shape to be provided with certain spacing distance with above-mentioned.That is to say that through hole 31 is the big relatively through holes of area than the camera lens 21 of above-mentioned flat shape.
But, as mentioned above, have certain spacing distance between through hole 31 and the above-mentioned camera lens 21.Like this, foreign matter such as dust will be by intrusion in device between above-mentioned through hole 31 and the camera lens 21.Therefore, in order to prevent of this sort situation, in the present embodiment, a side of above-mentioned shade 30 is provided with dustproof sheet 33.Here, above-mentioned dustproof sheet 33 is to give prominence to the center of above-mentioned through hole 31 to be provided with.
Like this, just can prevent from bobbin 20 accurately to be regulated, just can not generation of defects such as read out being stored in signal on the CD thereby cause occurring bobbin 20 to the focusing process of camera lens 21 owing to the intrusion of foreign matters such as dust.Certainly, also the above-mentioned dustproof sheet 33 that can only will be positioned on the above-mentioned shade 30 is made a little bit smallerly, also is feasible as long as its length can surpass above-mentioned through hole 31.But, in the present embodiment, under the situation that does not change the inscape of having set, just can stop foreign matter such as dust to the inner intrusion of device as long as increase a dustproof sheet 33 again.
Width along this dustproof sheet 33 is provided with the periphery of an end along above-mentioned through hole 31 on above-mentioned shade 30 continuously.Simultaneously, along its Width the other end is given prominence to setting along the center position of above-mentioned through hole 31.Here, above-mentioned dustproof sheet 33 length of stretching out is according to setting in the scope that can not exert an influence to the rayed of above-mentioned camera lens 21.Therefore, the end of the dustproof sheet 33 of above-mentioned exposed portions serve should be almost with the periphery of above-mentioned plane camera lens 21 along consistent, the length that is to say the exposed portions serve of above-mentioned dustproof sheet should be controlled in this scope to be set.But dustproof sheet 33 stretches out from the through hole 31 of vast sky shape, and prolongs to the periphery of the camera lens 21 of circle.Therefore, the length of the exposed portions serve of dustproof sheet 33 is with regard to when bigger and should be littler than the bigger diameter of above-mentioned through hole 31 than the less diameter of above-mentioned through hole 31.
Can take multiple diverse ways according to the material of dustproof sheet 33 for the installation of dustproof sheet 33 here.That is to say that different according to the material of the material of dustproof sheet 33 and shade 30 are being installed into diverse ways such as can taking fusion or adhesion to above-mentioned dustproof sheet 33.In addition, dustproof sheet 33 also can use hard material or material to make.But, when when action is focused in execution to above-mentioned camera lens 21, above-mentioned camera lens 21 just not too contacts easily well with above-mentioned dustproof sheet 33.Therefore, when making above-mentioned dustproof sheet 33, still should use material or material with flexibility to make, effect just can be more satisfactory like this.In addition, when using this material with flexibility or material to make above-mentioned dustproof sheet 33, above-mentioned material should use has the material that can filter tiny foreign matters such as dust, that is to say that the material result with good filterableness will be desirable more.
In addition, above-mentioned dustproof sheet 33 should be arranged on the bottom surface of shade 30, effect can be more satisfactory like this.This is to be determined by the structure of dustproof sheet 33 or properties of materials, because above-mentioned dustproof sheet may exert an influence to the CD of high speed rotating.Simultaneously, if with above-mentioned dustproof sheet 33 be arranged on above-mentioned shade above, also can there be certain problem in this for the design of optical Pickup device.Therefore, if solved the problem that the design aspect of above-mentioned harmful effect and surface structure exists, then above-mentioned dustproof sheet 33 just can be arranged on above-mentioned shade 30 above.
Below, will the effect according to optical Pickup device of the present invention be described in detail.
At first, for guarantee part that above-mentioned dustproof sheet 33 stretches out almost with the periphery of above-mentioned camera lens 21 along being consistent, just above-mentioned dustproof sheet 33 is given prominence to setting along the bottom surface of above-mentioned shade 30.Therefore, above-mentioned dustproof sheet 33 just stretches out at the through hole 31 upper edge center positions of above-mentioned shade 30.Generally speaking, 31 one-tenth vast sky shapes of above-mentioned through hole constitute.Therefore, for the exposed portions serve of dustproof sheet 33, the length that the various piece of its above-mentioned through hole 31 is stretched out just can not be consistent.In other words, the length that is exactly the extension of above-mentioned dustproof sheet 33 should be longer relatively than the less diameter of the through hole 31 of above-mentioned vast sky shape, and should be shorter relatively than the bigger diameter of the through hole 31 of above-mentioned vast sky shape.
After above-mentioned dustproof sheet 33 is installed, just above-mentioned shade 30 is installed on the bobbin 20 that is arranged on the light picker frame 10.Then, to being installed on the CD Player according to optical Pickup device of the present invention.
If press the loading or the unload button of CD Player, just can make pallet 8 by inlet discrepancy player device, thereby CD is loaded or unloads.In addition, be provided with CD door 8b at the front end of pallet 8, thereby above-mentioned inlet is opened and closed selectively.
This pallet 8 relies on loading engine (not shown) to drive.That is to say, on the loading engine, contain and go up the driving gear strip device (not shown) that forms at the driven wheel (not shown) that connects by drive pulley.Below pallet 8, be provided with tooth bar (not shown), thereby can make itself and above-mentioned driven wheel tabling.The drive mechanism of this pallet 8 can make pallet 8 produce vibrations in moving.Therefore, between above-mentioned inlet and CD door 8b, be provided with less clearance (gap).Even produced above-mentioned vibrations like this, can guarantee that also above-mentioned pallet 8 successfully moves.
But this gap also can become the path of foreign matter such as dust to the internal penetration of player simultaneously, and this is its existing undesirable element.Therefore, by this gap to the device in the intrusion foreign matters such as dust attached to above-mentioned drive pulley on, will bring out the unfavorable conditions such as work that player breaks down or mistake occurs.Particularly, if foreign matters such as dust invade device inside by this gap and adhere on the above-mentioned bobbin 20, will bring more player to seriously influence, thereby produce fatefulue infringement to player.
When CD can not play, above-mentioned bobbin 20 just covered it by cover (not shown).Like this, just can prevent that foreign matters such as dust from invading in bobbin 20 by cover.But if CD is being play, bobbin 20 will read out being stored in the lip-deep signal of CD.At this moment, above-mentioned cover will be removed, and keep this state.At this moment, the foreign matters such as dust of the inlet intrusion device inside by player will be attached to above the bobbin 20.
But, in the foundation embodiments of the invention, in the bottom surface of the shade 30 of the upper end that is arranged on bobbin 20 along the outstanding dustproof sheet 33 that is provided with of the center position of through hole 31.Therefore, the foreign matters such as dust in the intrusion device just can not be to bobbin 20 infiltrations and attached to above it.Because foreign matters such as these dusts are to be filtered by the dustproof sheet 33 between camera lens 21 and through hole 31.Like this, foreign matters such as dust are filtered out, to stop its intrusion in device by dustproof sheet 33.Like this, just can guarantee that bobbin 20 is not subjected to from the infringement of the foreign matters such as dust of outside intrusion, thereby just can guarantee the various accurate actions of bobbin 20 execution, and make whole device keep good running status.
As mentioned above, for situation of the present invention, although be applicable to the player of preceding load mode according to device of the present invention.But, it can apply to the player of top load mode too, so also is feasible.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used 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 modification of the above embodiment.
Claims (4)
1, a kind of optical Pickup device of CD drive is characterized in that comprising that following components constitutes:
Two ends are connected with the axis of guide respectively, and the light picker frame that drives along with the above-mentioned axis of guide;
Be arranged on the upper end of described light picker frame, camera lens is installed;
In order to gather the bobbin of focusing and following the tracks of on the described CD from the light that light source sends by described camera lens;
Be installed in the upper end of described bobbin, described bobbin is protected, form the shade of through hole for the light that sends from described camera lens can be shone the signal storage face of described CD in the centre;
Invade and the dustproof sheet that is provided with at the periphery of the through hole of described shade to above-mentioned bobbin by described through hole in order to prevent foreign matter etc.
2, the optical Pickup device of CD drive as claimed in claim 1 is characterized in that:
Along the Width of described dustproof sheet one end is connected setting according to the periphery of described through hole, and the other end is given prominence to setting along the center position of described through hole in the scope that the rayed of guaranteeing not described camera lens exerts an influence.
3, the optical Pickup device of CD drive as claimed in claim 2 is characterized in that:
Described dustproof sheet is arranged on the bottom surface of described shade.
4, as the optical Pickup device of claim 1 or 2 or 3 described CD drive, it is characterized in that:
Described dustproof sheet is to be formed by the material with flexibility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100992450A CN1797566A (en) | 2004-12-29 | 2004-12-29 | Light picking device of optical disk driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100992450A CN1797566A (en) | 2004-12-29 | 2004-12-29 | Light picking device of optical disk driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1797566A true CN1797566A (en) | 2006-07-05 |
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ID=36818536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100992450A Pending CN1797566A (en) | 2004-12-29 | 2004-12-29 | Light picking device of optical disk driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1797566A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726816B (en) * | 2008-10-15 | 2011-06-08 | 亚洲光学股份有限公司 | Dustproof gasket and image sensing module |
-
2004
- 2004-12-29 CN CNA2004100992450A patent/CN1797566A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101726816B (en) * | 2008-10-15 | 2011-06-08 | 亚洲光学股份有限公司 | Dustproof gasket and image sensing module |
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