CN1571036A - Objective lens driving device - Google Patents
Objective lens driving device Download PDFInfo
- Publication number
- CN1571036A CN1571036A CNA2004100065144A CN200410006514A CN1571036A CN 1571036 A CN1571036 A CN 1571036A CN A2004100065144 A CNA2004100065144 A CN A2004100065144A CN 200410006514 A CN200410006514 A CN 200410006514A CN 1571036 A CN1571036 A CN 1571036A
- Authority
- CN
- China
- Prior art keywords
- support
- objective lens
- actuator
- movable part
- contact site
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47D—FURNITURE SPECIALLY ADAPTED FOR CHILDREN
- A47D13/00—Other nursery furniture
- A47D13/08—Devices for use in guiding or supporting children, e.g. safety harness
- A47D13/083—Baby feeding cushions
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
The objective lens driving device supports an actuator movable section comprising a lens holder for retaining an objective lens so that the actuator movable section can be movably supported to a frame. In the objective lens driving device, a contacting section is provided at the pickup movable section, an actuator frame integrated with the frame is arranged near both the outer sides of the pickup movable section, stoppers are provided at the left/right upper sections of the actuator frame, and the contacting section comes into contact with the stoppers, thus limiting the movement of the movable section in the direction of a disk exceeding a prescribed value.
Description
Technical field
The present invention relates to a kind of objective lens device of light picker.
Background technology
Use up the optical head that reads or write that carries out signal for the signal recording medium of CD etc. and have shell, portion is equipped with as the semiconductor laser of light-emitting component with as the photodetector of photo-sensitive cell within it.Be provided with the support of steel plate system in this shell, the actuator support that is integrally formed therewith is installed on the shell in the bottom of support along near the of the two sides of the movable part with lens and be provided with.
In addition, in the lens mount of movable part, on the respective side of the side about this, be respectively arranged with support sector as the top of CD side with as the bottom of its opposition side.Lens mount is propped up by messenger wire respectively and is held in 4 support sectors.At the other end of each messenger wire, be provided with the maintaining part that keeps this messenger wire, this maintaining part is installed on the support by screw.Lens mount and coil rack by the messenger wire support are integrally formed, are provided with the contact site of overshooting shape above this coil rack.
In addition, the actuator support is provided with the lid of the steel plate system that covers movable part integral body.In addition, on the top of the actuator support of the left and right sides face that is arranged at movable part, two upper ends of lid cover by the leaf spring of bending.Thus, in when action, the inner face of the bending of lid contacts with contact site, and movable part is towards the CD direction, is restricted above the action of specified degree.Thus, the inner face of lid and contact site constitute stop mechanism.
Patent documentation 1
The spy opens 2000-251298 number
In the existing objective lens device, as previously mentioned, near the actuator support the two sides that are arranged at messenger wire, card is established the lid that covers all steel plate systems of movable part, and the stopping part of lid contacts with contact site on being arranged at coil rack top.But, in ultrathin pick-up, but when guaranteeing gap value between CD and the pick-up and lens momentum, must realize miniaturization, the result is difficult to constitute the chocking construction of the pick-up lid configuration on magnetic circuit top.
That is, in the restriction of the movable range of the existing object lens that the lid that will cover pick-up integral body forms as retainer, the influence because of for the error of the installation site of the lid of the lens of ability of posture control produces error in the movable range of lens.If produce the error of movable range, then make lens mount surpass above the moving up and down of necessary degree, cause the stress of messenger wire to increase.In opposite extreme situations, when applying external force (impact), be that the left and right sides is nonequilibrium for the contact condition of retainer, have the danger that causes the messenger wire distortion.
Summary of the invention
The object of the invention is to provide a kind of objective lens device that addresses this problem.
In the present invention, the pick-up movable part is provided with contact site, near two outsides of pick-up movable part, be provided with the actuator support integrally formed with support, be provided with retainer on the top of this actuator support respectively, this retainer contacts with above-mentioned contact site, and thus, the restriction movable part is towards the action that surpasses specified degree of CD direction.
In objective lens device of the present invention, the pick-up movable part is provided with contact site, near two outsides of pick-up movable part, be provided with the actuator support integrally formed with support, top at this actuator support is respectively arranged with retainer, retainer contacts with above-mentioned contact site, thus, the restriction movable part is towards the action that surpasses specified degree of CD direction.In the structure of passing through lid covering pick-up top integral body of prior art, can't guarantee less pick-up integral body and the gap between the CD, but, can guarantee to have well-to-do gap according to the present invention.
Now, will be installed on the bending two ends of the sheet-steel cover on the support so that cover tracking coil and focusing coil, this bend adopts leaf spring, used as retainer.So because the unfavorable condition of installing produces floating of lid, the contact condition of retainer is that the left and right sides is non-equilibrium.Relative therewith, among the present invention because the assigned address of retainer about positively being fastened on, the reference point of the retainer about not changing and contact position is identical.Thus, has the increase of the stress of following the line that floating of lid cause and a effect that the danger that produces tails off.
In addition, when making the lens stance adjustment of the whole tangential direction that moves of object lens mechanism, because retainer and support are moved integratedly, so can guarantee common parallel position relation with the contact site of lens mount, the effect of the generation that can obtain to prevent that principal vertical line is out of shape.
In addition, because contact site, between the support sector of the upper and lower of the left and right sides of lens mount face, be integrally formed into, so intensity is good.
Description of drawings
Fig. 1 is the stereographic map of an embodiment of expression objective lens device of the present invention.
Fig. 2 is the stereographic map of a part that takes off the major part of objective lens device.
Fig. 3 is the stereographic map along the different directions of objective lens device shown in Figure 1.
Symbol description: 1 object lens; 2 lens mount; 2f contact site 2b, 2d support sector; 2c, the secondary support sector of 2e; 6 messenger wires; 9 supports; 15 actuator supports; 17 retainers; 17a, 17b pawl; 17c, 17d pawl.
Embodiment
Fig. 1 is the stereographic map of an embodiment of expression objective lens device of the present invention, the stereographic map of the state that Fig. 2 takes off the part of the major part of objective lens device for expression, and Fig. 3 is the stereographic map along the different directions of objective lens device shown in Figure 1.
Object lens 1 remain on the lens mount 2, and skeleton 2a is integrally formed therewith in its end.On skeleton 2a, focusing coil 3 twines ground within it week to be installed, and tracking coil 4,5 contacts with focusing coil 3 in the inside of coil rack 2a in addition, is wound in the position of regulation.
In addition, the respective side of the side about lens mount 2, about, respectively have 2 messenger wires 6 to be provided with in parallel to each other.In this what is called " up and down ", claim that in objective lens device a side near the CD side is above, top, top, upper end, title is the below away from a side of CD side, bottom, following, lower end.Amount to 4 messenger wires 6 respectively as the elasticity support of lens mount 2.Be arranged at an end of the messenger wire 6 of upper side, by the support sector 2b integrally formed with lens mount 2, also being integrally formed in the secondary 2c of support sector that is provided with on the extended line of the 2b of support sector with lens mount 2 supports, be arranged at an end of the messenger wire 6 of lower side, by the support sector 2d integrally formed with lens mount 2, also integrally formed with lens mount 2, the secondary 2e of support sector that is arranged on the extended line of the 2d of support sector supports.At this, the spacing between secondary 2e of support sector and the 2d of support sector is set than short at interval between secondary 2c of support sector and the 2b of support sector.
In addition, the other end of each messenger wire 6 of 4 is welded on holding member 7 respectively and pastes and pay on the printed circuit substrate 8 on this holding member 7.Printed circuit substrate 8 and holding member 7 are fixed on the support 9 of steel plate system by screw 10.Thus, the object lens drive division is supported movably with respect to framework 9.On the two sides of clamping lens mount 2, divide between 2b of other support sector and the 2d of support sector, form contact site 2f towards the outer direction projection of side.
Be provided with the pair of magnet 11 and 12 of same pole surface (the N utmost point) subtend of clamping focusing coil 3 and tracking coil 4,5.This pair of magnet 11,12 be installed in respectively with the integrally formed opposed yoke 13 and 14 of support 9 on.In addition, be provided with near the outside of the two sides of messenger wire 6 with the integrally formed actuator support 15 of support 9.
In addition, on this actuator support 15, be cross over the retainer 17 that the steel plate system of establishing is opened in the lower end from the upper end.This retainer 17 by pawl 17a, 17b that tension force is arranged that is arranged on the upper end and pawl 17c, the 17d that is arranged on the lower end, is fastened on the actuator support 15.Top at this retainer 17 is provided with the flange with the surface of contact 17e that contacts with contact site 2f.
From magnet 11 and 12 magnetic fluxs that produce, act on the effective coverage of focusing coil 3 and each tracking coil 4,5.Can be at this by focus error signal being supplied with focusing coil 3, carry out object lens 1 are driven with lens mount 2 and make focus focus control on the signal face of CD of light beam.In addition, can make the tracking Control of the signal trajectory of beam ray tracing CD, drive object lens 1 with lens mount 2, so that the signal of track record on CD by the trail-and-error signal being supplied with each tracking coil 4,5.
Thus in the objective lens device of Gou Chenging, be fastened on support 9 integrally formed about actuator support 15 on the positional precision of surface of contact 17e of retainer 17, with to be integral the positional precision of contact site 2f of setting higher with movable part.
Claims (4)
1. objective lens device that the relative support of actuator movable part that is made of the lens mount that keeps object lens is supported movably, it is characterized in that, the pick-up movable part is provided with contact site, near two outsides of pick-up movable part, be provided with the actuator support integrally formed with support, top, the left and right sides at this actuator support is respectively arranged with retainer, retainer contacts with above-mentioned contact site, limits the action that surpass specified degree of movable part towards the CD direction thus.
2. objective lens device according to claim 1 is characterized in that, on the left and right sides face of the lens mount that the actuator movable part is supported movably by the relative support of messenger wire of linearity contact site is arranged respectively.
3. objective lens device according to claim 2 is characterized in that, contact site is configured to form between the support sector of the upper and lower of the left and right sides of lens mount face.
4. objective lens device according to claim 1 is characterized in that, this retainer adopts steel plate system, simultaneously, is provided with the pawl of tension force, and is fastened on the actuator support by this pawl.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003061320A JP4130137B2 (en) | 2003-03-07 | 2003-03-07 | Objective lens drive |
| JP2003061320 | 2003-03-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1571036A true CN1571036A (en) | 2005-01-26 |
| CN1275241C CN1275241C (en) | 2006-09-13 |
Family
ID=33123571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100065144A Expired - Fee Related CN1275241C (en) | 2003-03-07 | 2004-03-04 | Objective lens driving device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4130137B2 (en) |
| KR (1) | KR100546088B1 (en) |
| CN (1) | CN1275241C (en) |
| TW (1) | TWI278855B (en) |
-
2003
- 2003-03-07 JP JP2003061320A patent/JP4130137B2/en not_active Expired - Fee Related
-
2004
- 2004-02-23 KR KR1020040012001A patent/KR100546088B1/en not_active IP Right Cessation
- 2004-03-04 TW TW093105650A patent/TWI278855B/en not_active IP Right Cessation
- 2004-03-04 CN CNB2004100065144A patent/CN1275241C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1275241C (en) | 2006-09-13 |
| TW200425124A (en) | 2004-11-16 |
| TWI278855B (en) | 2007-04-11 |
| KR100546088B1 (en) | 2006-01-26 |
| KR20040080341A (en) | 2004-09-18 |
| JP4130137B2 (en) | 2008-08-06 |
| JP2004273006A (en) | 2004-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20060913 Termination date: 20140304 |