CN1324581C - Driver for optical pickup device - Google Patents
Driver for optical pickup device Download PDFInfo
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- CN1324581C CN1324581C CNB2003101079968A CN200310107996A CN1324581C CN 1324581 C CN1324581 C CN 1324581C CN B2003101079968 A CNB2003101079968 A CN B2003101079968A CN 200310107996 A CN200310107996 A CN 200310107996A CN 1324581 C CN1324581 C CN 1324581C
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- focus servo
- tracking servo
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Abstract
The present invention relates to a driver for an optical picker. The present invention comprises a magnetic yoke metal plate, a reel, a flexible base plate and a plurality of metal wire springs, wherein a magnetic yoke provided with a magnet is arranged on the magnetic yoke metal plate; the reel can move on the magnetic yoke metal plate, and is provided with a pair of object lenses; the flexible base plate is arranged on a position which is opposite to that of the reel; a focus servo base plate and a tracking servo base plate respectively used for the focus servo and the tracking servo of the pair of the object lenses are arranged on the flexible base plate; the metal wire springs are used for realizing the power supply connection between the focus servo base plate and the outside and between the tracking servo base plate and the outside; under the action of the metal wire springs, the reel can move on the magnetic yoke metal plate. The present invention has the advantages that the weight of the reel can be lightened; the sensibility of the driver is improved; the winding quality of the focus servo base plate and the tracking servo base plate can be maintained, and thus, the operation characteristics of the driver can be improved, and the yield can be improved.
Description
(1) technical field
The invention relates to light picker with driver, in more detail, is about being set to light picker that pliable and tough substrate constitutes by magnet that is used to carry out focus servo operation and tracking servo operation and corresponding structure with driver.
(2) background technology
Fig. 1 is the STRUCTURE DECOMPOSITION figure that light picker is used driver in the middle of the prior art.As shown in the figure, on the light picker framework 1 of formation light picker main body yoke sheet metal 3 is installed.Above-mentioned yoke sheet metal 3 is that metal material makes, and central opening, and it is symmetrical that the two ends of opening portion are respectively arranged with inboard yoke 5.Be provided with outside yoke 7 respectively at certain intervals place, the outside of above-mentioned inboard yoke 5.Above-mentioned outside yoke 7 as shown in the figure, in-plane is seen as " " word shape.The inside of above-mentioned outside yoke 7, that is, the one side relative with above-mentioned inboard yoke 5 is attached with magnet 8.
One end of above-mentioned yoke sheet metal 3 is provided with support 10.Above-mentioned support 10 is fixed on the above-mentioned yoke sheet metal 3 by screw 11.Above-mentioned support 10 is connected with bobbin 13 by wire spring 15.Above-mentioned wire spring 15 generally respectively has one up and down at the two ends of above-mentioned bobbin 13, and four are used for connecting above-mentioned bobbin 13 altogether.The two ends of above-mentioned bobbin 13 are provided with and connect substrate 16, are used for above-mentioned wire spring 15 and the following focus servo coil that will talk about 18 and tracking servo coils 19 are electrically connected.The upper end of above-mentioned bobbin 13 is provided with thing lens 17, and the light optically focused that is used for light source is penetrated is to CD.
Above-mentioned bobbin 13 is provided with the yoke 5,7 that is installed on the above-mentioned yoke sheet metal 3, and and magnet 8 corresponding focus servo coil 18 and tracking servo coils 19.The symbol 14 of not specified (NS) is for settling the through hole of above-mentioned inboard yoke 5 in the accompanying drawing.By above-mentioned through hole 14, on the relative position of the top that above-mentioned bobbin 13 is set to yoke sheet metal 3 and the focus servo coil 18 of above-mentioned bobbin 13 and tracking servo coils 19 and above-mentioned magnet 8.
The central driver of prior art with said structure carries out following operation.That is, driver is adjusted above-mentioned position to thing lens 17, with light accurately optically focused to the signal recording surface of CD.For this reason, provide power supply to above-mentioned focus servo coil 18 and tracking magnetic flotation line circle 19, can form electromagnetic field then by above-mentioned wire spring 15.In the middle of the magnetic loop by above-mentioned magnet 8 formation, come a name Left Hand Rule according to Buddhist, portable cord axle 13 under the effect that power is provided can carry out the adjusting of tracking servo and focus servo.
But there are the following problems in the middle of the above-mentioned prior art.
That is,, also require the susceptibility of driver is improved along with the high speed of disc drives.General, the susceptibility of driver is subjected to movable part, such as bobbin 13 connects substrate 16, to thing lens 17, the influence of the weight of focus servo coil 18 and tracking servo coils 19.But the movable part of existing driver so its weight is relatively large, can not adapt to the high speed disc drives because of wherein connecting the two ends that substrate 16 is arranged on above-mentioned bobbin 13.Especially, the weight of above-mentioned focus servo coil 18 and tracking servo coils 19 has occupied about 64% of whole driver weight.
And, also can be subjected to the winding the line influence of quality of the characteristic of above-mentioned focus servo coil 18 and tracking servo coils 19.That is, above-mentioned focus servo coil 18 and tracking servo coils 19 be not as winding the line, and the operation of bobbin 13 just can not accurately realize according to situation about designing.
(3) summary of the invention
Therefore, the present invention carries out in order to address the above problem just, is reduced to the weight of the movable part of driver minimum as far as possible.
Another object of the present invention is accurately to realize the operation of driver.
To achieve these goals, light picker driver of the present invention is characterized in comprising:
The yoke sheet metal is equipped with the yoke that possesses magnet on it;
Bobbin can move at above-mentioned yoke sheet metal, and be provided with the thing lens;
Pliable and tough substrate is arranged on the relative position of above-mentioned bobbin, and it is provided with to be respectively applied for and carries out the focus servo of thing lens and the focus servo substrate and the tracking servo substrate of tracking servo operation;
A plurality of wire springs are used to realize that above-mentioned focus servo substrate and tracking servo substrate are connected with power supply between the outside, and make above-mentioned bobbin to move on above-mentioned yoke sheet metal.
Above-mentioned focus servo pattern and tracking servo substrate are in different layers.
Light picker driver of the present invention with said structure, advantage is to alleviate the weight of bobbin, improve the sensitivity of driver, and can keep the coiling quality of focus servo pattern and tracking servo pattern, thereby can improve the operating characteristic of driver.
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 STRUCTURE DECOMPOSITION figure that light picker is used driver in the middle of the prior art.
Fig. 2 is the structural representation of light picker of the present invention with the specific embodiment of driver.
Fig. 3 is the structural representation of bobbin in the embodiments of the invention.
Fig. 4 is the part synoptic diagram of pliable and tough substrate in the embodiment of the invention.
(5) embodiment
As shown in Figure 2, the yoke sheet metal 30 of driver is provided with yoke 32.Above-mentioned yoke 32 is vertically to be arranged on the above-mentioned yoke sheet metal 30.The two ends of the bobbin 50 that will talk about below in the middle of the present embodiment only are provided with a yoke 32 respectively, but be not leave no choice but so can not, also inboard yoke and outside yoke can be set respectively.Above-mentioned yoke 32 is provided with magnet 34.Magnetic force by above-mentioned magnet 34 constitutes magnetic loop jointly with above-mentioned yoke 32.
One end of above-mentioned yoke sheet metal 30 is provided with support 35.The arranged outside of above-mentioned support 35 has substrate 36, is used for carrying out power supply with the driver outside and is connected.Be provided with and a plurality of wire springs 40 parallel above the above-mentioned yoke sheet metal 30 from the side prolongation of above-mentioned support 35.That is, an end of above-mentioned wire spring is connected with above-mentioned support 35.At this moment, above-mentioned wire spring 40 connects above-mentioned support 35, electrically connects with aforesaid substrate 36.
The front end of above-mentioned wire spring 40 is connected with bobbin 50.Therefore above-mentioned bobbin 50 is the top top that is positioned at above-mentioned yoke sheet metal 30.Above-mentioned bobbin 50 is provided with thing lens 52.The above-mentioned light optically focused that thing lens 52 are sent light source is to the signal recording surface of CD.Here deserving to be called the face of stating magnet 34 corresponding bobbins 50 is front end face and rear end face, and the one side of the support leg 54 that will talk about below forming is the side.
Give prominence on the roughly centre position of the opposite flank of above-mentioned bobbin 50 and be provided with a plurality of support legs 54.The quantity of above-mentioned support leg 54 is consistent with the quantity of above-mentioned wire spring 40, and its position preferably can with corresponding position, above-mentioned center to thing lens 52 on.Connect above-mentioned support leg 54, above-mentioned wire spring 40 just can connect whole bobbin 50.
In addition, the two ends, side of above-mentioned bobbin 50 are respectively arranged with and connect leg 56.The above-mentioned connection leg 56 outstanding sides that are arranged on above-mentioned bobbin 50.Above-mentioned wire spring 40 connects above-mentioned connection leg 56.The effect of above-mentioned wire spring 40 is exactly that the following pliable and tough substrate 60 that will talk about is electrically connected near being connected leg 56 with above-mentioned.
The front end face of above-mentioned bobbin 50 and rear end face are respectively arranged with pliable and tough substrate 60.Above-mentioned pliable and tough substrate 60 has flexibility and can be out of shape.Above-mentioned pliable and tough substrate 60 is provided with focus servo substrate 62 and tracking servo substrate 64.Above-mentioned focus servo substrate 62 be by and above-mentioned magnet 34 between the electromagnetic force that produces interact and carry out focusing operation, above-mentioned tracking servo substrate 64 be by and above-mentioned magnet 34 between the electromagnetic force that produces interact and carry out focusing operation.
In the middle of the above-mentioned pliable and tough substrate 60, focus servo substrate 62 and tracking servo substrate 64 are in different layers.That is, above-mentioned pliable and tough substrate 60 is multilayers.Certainly, above-mentioned focus servo substrate 62 or tracking servo substrate 64 itself also can be set to multilayer.And, also can be respectively above-mentioned focus servo substrate 62 and tracking servo substrate 64 be arranged on the two sides of above-mentioned pliable and tough substrate 60.
To describe the effect of light picker of the present invention with said structure below with driver.
Above-mentioned pliable and tough substrate 60 in the middle of the present invention is to make by the engineering in general making printing loop.
That is, metal level is set, makes template by polishing and engraving engineerings such as (etching) at insulation course.The thickness and the length of above-mentioned focus servo substrate 62, tracking servo substrate 64 are all decided according to the design conditions of driver.
Above-mentioned pliable and tough substrate 60 is separately positioned on the front-end and back-end of bobbin 50, is positioned at the position relative with above-mentioned magnet 34.And, substrate on the above-mentioned pliable and tough substrate 60 is promptly distinguished power supply, thereby is formed electromagnetic field on focus servo substrate 62 and the tracking servo substrate 64, by and above-mentioned magnet 34 between electromagnetic action, above-mentioned bobbin 50 will move towards focus servo direction and tracking servo direction.
To be described in more details this below.Above-mentioned pliable and tough substrate 60 is positioned at the magnetic loop that above-mentioned magnet 34 forms.When by wire spring 40 during to tracking servo substrate 64 supply capabilities of above-mentioned pliable and tough substrate 60, according to Fleming's Left Hand Rule, bobbin 50 will move towards certain direction, then with above-mentioned light to outgoing in the thing lens 52 accurately optically focused to the track of the signal recording surface of CD.
In addition, in order to carry out focus servo operation, by focus servo substrate 62 supply capabilities of wire spring 40, then along with moving on the mark record surface that just light of light emitted can be focused on accurately CD of bobbin 50 becomes a focus to above-mentioned pliable and tough substrate 60.
The electric power of above-mentioned focus servo substrate 62 and above-mentioned tracking servo substrate 64 is supplied with all and is realized by wire spring 40 from aforesaid substrate 36.Above-mentioned wire spring 40 can be directly directly to be connected with above-mentioned tracking servo substrate 64 with above-mentioned focus servo substrate 62 by welding, also can connect by other connecting line.
The light picker of the present invention that has said structure and as above operate is arranged on the position with the corresponding bobbin of magnet with driver, its structure is used to realize focus servo operation and tracking servo operation, and adopted pliable and tough substrate, therefore can reduce the weight of bobbin relatively, thus the operation of realization driver that can be easier.
And will be used to realize that the focus servo substrate and the tracking servo substrate of focus servo operation and tracking servo operation are arranged on pliable and tough substrate, therefore can relatively easier realize high yield, reduce cost, and because can realize stable substrate format, thereby can improve the Reliability of driver operation.
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 (2)
1. light picker driver is characterized in that comprising:
The yoke sheet metal is equipped with the yoke that possesses magnet on it;
Bobbin can move on above-mentioned yoke sheet metal, and be provided with the thing lens;
Pliable and tough substrate is arranged on the position of above-mentioned bobbin both sides end face, and it is provided with to be respectively applied for and carries out the focus servo of thing lens and the focus servo substrate and the tracking servo substrate of tracking servo operation;
A plurality of wire springs are used to realize that above-mentioned focus servo substrate and tracking servo substrate are connected with power supply between the outside, and make above-mentioned bobbin to move on above-mentioned yoke sheet metal.
2. light picker driver as claimed in claim 1 is characterized in that: above-mentioned focus servo substrate and tracking servo substrate are in different layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101079968A CN1324581C (en) | 2003-10-17 | 2003-10-17 | Driver for optical pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101079968A CN1324581C (en) | 2003-10-17 | 2003-10-17 | Driver for optical pickup device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1609964A CN1609964A (en) | 2005-04-27 |
| CN1324581C true CN1324581C (en) | 2007-07-04 |
Family
ID=34758431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101079968A Expired - Fee Related CN1324581C (en) | 2003-10-17 | 2003-10-17 | Driver for optical pickup device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1324581C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000306250A (en) * | 2000-01-01 | 2000-11-02 | Ricoh Co Ltd | Objective lens actuator |
| CN1356693A (en) * | 2000-12-08 | 2002-07-03 | 三星电子株式会社 | 4-axle drive actuator for optical pick-up |
| KR20030006588A (en) * | 2001-07-13 | 2003-01-23 | 삼성전기주식회사 | Optical pick-up actuator |
-
2003
- 2003-10-17 CN CNB2003101079968A patent/CN1324581C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000306250A (en) * | 2000-01-01 | 2000-11-02 | Ricoh Co Ltd | Objective lens actuator |
| CN1356693A (en) * | 2000-12-08 | 2002-07-03 | 三星电子株式会社 | 4-axle drive actuator for optical pick-up |
| KR20030006588A (en) * | 2001-07-13 | 2003-01-23 | 삼성전기주식회사 | Optical pick-up actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1609964A (en) | 2005-04-27 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070704 Termination date: 20091117 |