CN100452188C - Recording and/or playing back device - Google Patents
Recording and/or playing back device Download PDFInfo
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- CN100452188C CN100452188C CNB2006101150228A CN200610115022A CN100452188C CN 100452188 C CN100452188 C CN 100452188C CN B2006101150228 A CNB2006101150228 A CN B2006101150228A CN 200610115022 A CN200610115022 A CN 200610115022A CN 100452188 C CN100452188 C CN 100452188C
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- disc holder
- spiro rod
- copulational protuberance
- compartment
- guide spiro
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Abstract
A disk recorder/player (1) including a skew adjusting means of a thin design is provided which includes a base (101), a disk rotation driving mechanism (102) for an optical disk (4), an optical pickup (103), first and second guide shafts (105, 106) to support the optical pickup (103) at opposite ends of the latter, an optical pickup moving means (104) guided by the first and second guide shafts (105, 106) in moving the optical pickup (103) radially of the optical disk (4), an elastic member (126) put in contact with the first and second guide shafts (105, 106) to force the first and second guide shafts (105, 106) in a direction generally perpendicular to the main side of the optical disk (4), an adjusting screw (127) put into contact with the first and second guide shafts (105, 106) from the opposite side of the elastic member (126) to move the first and second guide shafts (105, 106) in a direction opposite to the direction of forcing by the elastic member (126), and a skew adjusting means (109) which adjusts a skew, if any, by adjusting the inclination of the first and second guide shafts (105, 106) by the adjusting screw (127).
Description
The present invention is for the Chinese invention patent application number is 200410002527.4, denomination of invention is to record and/or reproducer, the applying date are dividing an application of on January 30th, 2004.
Technical field
The present invention relates to a kind of from disc-shaped recording medium record and/or generating information and signal and/or record and/or generating information and signal to the equipment of disc-shaped recording medium, The present invention be more particularly directed to a kind of can the mobile optical pickup unit pick up travel mechanism.
The application requires to propose on January 31st, 2003, application number be the Japanese patent application of P2003-025239 and propose on Dec 12nd, 2003, application number is the right of priority of the Japanese patent application of P2003-415741, all the elements of these patented claims are here as a reference.
Background technology
Recently some are equipped with CD-R/RW or DVD-ROM driver in the improved portable electric appts (such as notebook computer etc.) on function.Improve for the function of such portable electric appts, need make these CD-R/RW or the DVD-ROM driver can high speed Writing/Reading data or the DVD-ROM driver can be write data on the DVD again.
The notebook computer of small size (for example B5 size) is easier and be convenient for carrying than the notebook computer of large-size (for example A4 size).Therefore, the thickness of notebook computer and weight reduce to be improved on function simultaneously gradually.This CD-R/RW or DVD-ROM driver that also requires to be used for notebook computer should be designed to be thin as much as possible.
Schematically showing conventional being used among Fig. 1 records or reproduces data and/or record or reproduce the example of data to the disc type driver of CD-R/RW or DVD-ROM from CD-R/RW or DVD-ROM.As shown in FIG., such disc type driver represents that with Reference numeral 300 it comprises: main body 301; Be arranged on the disc holder 303 between inside and outside two positions in a movable manner, and disc holder 303 has the CD 302 that can make such as DVD etc. and is received in wherein recess; And the optical pickup units 304 that is installed in the rear side of disc holder 303, optical pickup units 304 can read information signal from the CD on being arranged on disc holder 303 302.
Fig. 2 shows the main body 301 of disk drive 300, but the first half of not shown drive body 301.And drive body 301 is made of one half ones up and down, and last Lower Half is to dock mutually.The Lower Half of representing with Reference numeral 307 at its front end 307a place be open wide so that disc holder 303 moves, and each relative transverse edge 307b and 307c are provided with guiding piece 308 and move with boot disk carriage 303 along it.Lower Half 307 307d place in its back-end is provided with the printed-wiring board (PWB) of being made by so-called rigid substrate 309, be formed with various circuit patterns on the printed-wiring board (PWB) 309, have electronic unit on the printed-wiring board (PWB) 309 such as the connector that is used for linking to each other with main process equipment etc.Printed-wiring board (PWB) 309 links to each other to be connected the optical pickup units 304 that is contained in the disc holder 303 with FPC (flexible print wiring) 310.
As shown in Fig. 3 and Fig. 4, optical pickup units 304 comprises: as the iron chassis 315 of its main body, and chassis 315 is provided with dish platform assembly 313; Be installed in the pair of guide rails 316 on the chassis 315; Pick up pedestal 317, pick up pedestal 317 and be provided with object lens 312, the mobile of object lens 312 guided by leading axle 316; And pick up travel mechanism 318, pick up travel mechanism 318 and make and pick up pedestal 317 and on leading axle 316 and along leading axle 316, move.
Utilize clamping screw etc. to make cap member 320 be fixed on a side place of placing CD 302 in the optical pickup units 304.Be formed with opening 321 in the cap member 320, the object lens 312 and the dish platform 313 that are included in the optical pickup units 304 expose by opening 321.For example, cap member 320 is made by aluminium (Al).It should be noted that optical pickup units 304 has the metal base plate 322 that is arranged on its bottom.Utilize clamping screw that base plate 322 is fixed on the compartment 325 of disc holder 303.Optical pickup units 304 is between base plate 322 and the disc holder 303.
Above-mentioned chassis 315 comprises iron framework 327.The shape of framework 327 is essentially rectangle.Wherein be formed with opening 328, the object lens 312 that pick up on the pedestal 317 pass through the signal recording surfaces that opening 328 is directly faced CD 302.The shape of opening 328 is essentially rectangle, be used for moving pick up pedestal 317 pick up travel mechanism 318, leading axle to 316 and the pedestal 317 that picks up that is supported on the leading axle 316 be arranged on wherein.In addition, opening 328 vertically extends one and is essentially circular otch 329 in an end place at one, wherein is provided with to make CD 302 circular discs platform 313 placed thereon and be used to Spindle Motor (not shown) that dish platform 313 is rotated.It should be noted that chassis 315 is fixed on the rigid matrix (not shown), chassis 315 has the connector 354 that links to each other with the end of FPC310 so that the printed-wiring board (PWB) 309 that is arranged in the main body 301 of disk drive 300 interconnects with optical pickup units 304.
Be used for the writing information signal to being placed on the CD of dish on the platform 313, perhaps at least one light source (not shown) such as semiconductor laser is installed from being placed on the win the confidence pedestal 317 that picks up of information signal of the optical disk reading of dish on the platform 313, the object lens 312 that are used to make from the light emitted to the CD light beam on 302 the signal recording surface to focus on, be used to detect by the photodetector (not shown) of the reflection ray of the recording surface of CD 302 and object lens 312 are moved and through the drive system of CD 302 (along tracking direction) towards and away from CD 302 (along focus direction).In addition, pick up pedestal 317 and have the patchhole 317b that is formed among the one longitudinal end 317a, and leading axle 316 passes patchhole 317b, pick up pedestal 317 and have the junction surface 330 that is formed on its another end 317c place relative with end 317a, junction surface 330 is engaged with on the leading axle 316.
As shown in Figure 5, pick up pedestal 317 and also comprise the joint element 332 adjacent with leading axle 316, joint element 332 be included in the guide spiro rod 331 that picks up in the travel mechanism 318 and engage so that pick up pedestal 317 and move.Joint element 332 extends to guide spiro rod 331 belows from end 317a, and patchhole 317b passes end 317a and forms, and joint element 332 has the actuated element 333 that engages with guide spiro rod 331.Actuated element 333 is provided with the copulational protuberance 334 that is threaded on the guide spiro rod 331 at the one end.Actuated element 333 is by making such as the resilient material of sheet spring so that copulational protuberance 334 total with guide spiro rod 331 on screw thread keep meshing.Pick up pedestal 317 and be fixed on and the rotation of guide spiro rod 331 can be changed on the linearly moving actuated element 333, when guide spiro rod 331 rotates, pick up pedestal 317 and move radially with respect to CD 302.
Pick up leading axle that relative transverse edge that pedestal 317 is supported on the opening 328 in the chassis 315 is provided with on 316, utilize leading axle 316 guiding to pick up pedestal 317 so that pick up pedestal 317 and between the internal and external circumference of CD, move, and object lens 312 are exposed on the signal recording surface of CD 302 by opening 328.
As shown in Figure 6, pick up travel mechanism 318 comprise with leading axle to 316 adjacent settings and with respect to disc radial direction extend guide spiro rod 331 and link to each other so that the DC motor 335 of guide spiro rod 331 rotations with the cardinal extremity 331a of guide spiro rod 331.
Utilize cardinal extremity 331a and bearing 336 that guide spiro rod 331 is bearing in the framework 337 at 331b place, its end.Utilize clamping screw etc. that framework 337 is fixed on the chassis 315 of optical pickup units 304, pick up travel mechanism 318 and be arranged near the leading axle 316.Guide spiro rod 331 is mounted, and the joint element 332 that picks up pedestal 317 slidably is threaded on the guide spiro rod 331.Therefore, when utilizing DC motor 335 that guide spiro rod 331 is rotated, it can make picks up pedestal 317 and moves radially with respect to CD 302.
As mentioned above, unless utilize DC motor 335 that guide spiro rod 331 is rotated and DC motor 335 do not provide any moment of torsion it with high-speed rotation.Therefore, each contact point that picks up travel mechanism 318 will be subjected to heavy wear.Pick up pedestal 317 if DC motor 335 links to each other with guide spiro rod 331 by gear mechanism and move, will increase gimp so.
Therefore, step motor makes and picks up pedestal 317 and move radially with respect to CD 302 as DC motor 335 and by be provided for square wave that stepping rotates for DC motor 335 in the present invention.
The disc holder 303 that wherein is provided with above-mentioned optical pickup units 304 forms at its master 340a that is essentially the pallet body 340 of rectangle and can make CD 302 be received in wherein recess 341, and forms the compartment 325 that optical pickup units 304 can be contained in wherein at the rear side of pallet body 340.The optical pickup units 304 that is contained in the compartment 325 has cap member fixed thereon 343.Be formed with opening 344 in the bottom of recess 341, cap member 343 exposes by opening 344.Like this, cap member 343 has formed the part of recess 341.In addition, supporting the object lens 312 be included in the optical pickup units 304 and the dish platform 313 of rotating CD 302 exposes by the opening in the cap member 343 344.
The recess 341 of disc holder 303 is circular basically, and is to be limited by as shown in Figure 3 the first to fourth circular wall 345 to 348 that is essentially.
In above-mentioned wall, the side that first wall 345 is formed on the rear end 303a of disc holder 303 is formed on the opening 344 in the bottom of recess 341 with extend through.First wall 345 has constant clearance C between its lower limb 345a relative with recess 341 and the cap member 343 that exposes by the opening in recess 341 344.
What note is, second is essentially circular and outstanding from recess 341 to wall 346 to 348.
As shown in Figure 7, be used for the supporting mechanism 360 that disc holder 303 is supported in the drive body 301 is formed on compartment 325, compartment 325 is formed on the rear side of disc holder 303 to hold optical pickup units 304.Supporting mechanism 360 comprises and is used for disc holder 303 is urged to drive body 301 outer compression mechanism 361 and engaging mechanism 362, and engaging mechanism 362 is bonded on the copulational protuberance 326 on the Lower Half 307 that is arranged on drive body 301 as the crow flies to realize the joint between disc holder 303 and the drive body 301.
In the compression mechanism 361 with said structure, the flange 365a that disc spring 366 will eject element 365 is urged to the rear end 303a of disc holder 303, and so as shown in Figure 7, it is outstanding from rear end 303a to eject element 365.In this case, the flange 365a of ejection element 365 is maintained on the maintenance step 368a of compartment 368.
Next, when disc holder 303 is accommodated in the drive body 301, the rear wall 301a that is resisted against drive body 301 from the outstanding ejection elements 365 of disc holder 303 go up and the acting force that overcomes disc spring 366 by the front end 303b of back pressure to disc holder 303.Like this, disc spring 366 is forced into the flange 365a that ejects element 365 and is compressed to front end 303b.When utilizing the back to make disc holder 303 be engaged with on the drive body 301 engaging mechanism of describing in detail 362, disc spring 366 will keep and can will eject the acting force that element 365 is pressed to rear end 303a as shown in Figure 8.It should be noted, eject element 365 this moment and be forced in the insertion space 370 by being formed on the patchhole that keeps in the wall 369.
Then, utilize engaging mechanism 362 that disc holder 303 and drive body 301 are thrown off mutually, the flange 365a that disc spring 366 will eject element 365 is urged on the 303a of rear end.Ejecting element 365 will be outstanding by through hole 368a from the rear end 303a of disc holder 303, and be resisted against the rear wall 301a of drive body 301.Further oppressed along with ejecting element 365, disc spring 366 extends to the front end 303b of disc holder 303 from the flange 365a of the ejection element 365 of the rear wall 301a that is resisted against drive body 301.Therefore, when keeping wall 369 to be forced into front end 303b, disc spring 366 is ejected into disc holder 303 outside the drive body 301.
Next, the engaging mechanism 362 that disc holder 5 and drive body 7 will be engaged is described.
As shown in Figure 9, engaging mechanism 362 comprises on the Lower Half 307 that is arranged on drive body 301 and can engage with disc holder 303 so that disc holder 303 is bonded on the copulational protuberance 326 in the drive body 301 and is arranged on the disc holder 303 and along junction surface 371 that the direction that can be bonded on the copulational protuberance 326 pivots.
As shown in fig. 1, copulational protuberance 326 is arranged near the end of Lower Half 307 of drive body 301.Copulational protuberance 326 is essentially cylindrical.When disc holder 303 is inserted in the drive body 301, copulational protuberance 326 will be bonded on the junction surface 371 that is formed at disc holder 303 places so that disc holder 303 is supported in the drive body 301.
As shown in Figure 9, the junction surface 371 that is bonded on the copulational protuberance 326 comprises: the hook-type retaining part 372 that is used to capture copulational protuberance 326; Main body 373 with the retaining part 372 that is formed on its place, end; Be arranged on the studding 374 of the base end side of main body 373, and junction surface 371 can pivot around studding 374; And the bearing part 376 that can contact with ejector button 375, will be described in detail ejector button 375 below.Junction surface 371 pivots around studding 374 along arrow D direction shown in Fig. 9 or the direction opposite with arrow D.Torsion-coil spring 377 is wound on the studding 374 to oppress the arrow D direction that junction surface 371 makes it in Fig. 9 all the time and pivots.Because junction surface 371 pivots along the arrow D direction among Fig. 9, so retaining part 372 is positioned on the moving track of the copulational protuberance 326 that is arranged on the drive body 301.
What note is that the ejector button 375 that contacts with bearing part 376 is arranged on the control panel (not shown) at the front end 301b place that is formed at drive body 301.When the user depresses ejector button 375 with ejection tray carriage 303, its compressing bearing part 376 so that junction surface 371 pivot along the direction opposite with arrow D among Fig. 9.
Particularly, when disc holder 303 is inserted in the drive body 301, the direction that is arranged on the arrow H of copulational protuberance 326 in Fig. 9 on the Lower Half of drive body 301 moves, abuts ramp surface 373a, and therefore along with the opposite direction pivotal engagement portion 371 of arrow D among Fig. 9.When copulational protuberance 326 moved the end of inclined-plane 373a, junction surface 371 was positioned on the moving track of copulational protuberance 326 once more at direction pivot and the retaining part 372 along arrow D under the effect of the acting force of torsion-coil spring 377.Like this, junction surface 371 makes its retaining part 372 be bonded on the copulational protuberance 326 and disc holder 303 engages with drive body 301.
For disc holder 303 is ejected into outside the drive body 301, user's operation will be oppressed the ejector button 375 of bearing part 376.When utilizing ejector button 375 compressing bearing parts 376, junction surface 371 pivots along the direction opposite with arrow D among Fig. 9.Like this, when junction surface 371 when the direction of arrow D pivots, retaining part 372 is from the moving track retraction of copulational protuberance 326, thereby throws off with copulational protuberance 326.Like this, disc holder 303 and drive body 301 are thrown off mutually, and utilize above-mentioned compression mechanism 361 that disc holder 303 is extruded from drive body.
As shown in Figure 10, the printed-wiring board (PWB) 309 interconnective FPC (flexible print wiring) 310 that are used for making the optical pickup units 304 that is accommodated in disc holder 303 and are arranged on the Lower Half 307 of drive body 301 are essentially U-shaped, and comprise adjacent and the first and second linear arms 350 that extend in parallel and 351 and make the first and second linear arms 350 and 351 interconnective circular portions 352.
Particularly, when disc holder 303 moved in the drive body 301 or move to outside the drive body 301, as shown in Figure 11 A to Figure 11 C, FPC310 moved in the drive body 301 its second arm 351.At this moment, second arm 351 is rolled over behind the front end 307a of Lower Half 307, forms bend 355.When disc holder 303 moved, bend 355 moved along the moving direction of disc holder 303.That is, in the time of outside disc holder 303 is ejected out to drive body 301, second arm 351 of FPC310 also near folding behind the position of circular portion 352 and as shown in Figure 11 A, is ejected into outside the drive body 301 its end 351a.Like this, bend 355 is formed on the position near circular portion 352.Then, when disc holder 303 is moved in the drive body 301, as shown in Figure 11 B, the bend of second arm 351 of FPC310 is correspondingly shifted to end 351a.When disc holder 355 is accommodated in the drive body 301 fully, as shown in Figure 11 C, the bend 355 of second arm 351 of FPC310 be formed near be arranged on optical pickup units 304 on the position of the coupling part that links to each other of connector 354.
In order accurately to write or reading of data from CD-R/RW or DVD-ROW CD, the light beam that sends from optical pickup units should vertically incide on the signal recording surface of CD.For such CD drive, relevant standard allows at the signal recording surface of CD and light beam is focused between the optical axial of the object lens on the CD that fixing angular range is arranged.
In addition, in a kind of like this CD drive, if light beam is not vertically to incide on the signal recording surface of CD, detect the angle of light beam so, and utilize the adjustment of deflection adjusting mechanism to make angular relationship between the signal recording surface of object lens that light beam focuses on and CD with respect to signal recording surface.
As shown in Figure 4, deflection adjusting mechanism 400 is set in the chassis 315, picks up pedestal 317 and is arranged in the chassis 315.It is arranged on each opposed end place of each paired guide rail 316, and guide rail 316 guiding are picked up pedestal 317 and moved radially with respect to CD 302.As shown in Figure 12, deflection adjusting mechanism 400 comprises: be arranged on the spring 402 in the support 401 on the end that is installed on guide rail 316, the top of spring 402 supporting guides 316; And be resisted against the downside of guide rail 316 and guide rail 316 is vertically exerted pressure with the adjustment screw 403 of the height of adjusting guide rail 316.
Above-mentioned support 401 is installed in the rear side 405a of the mainboard 405 that is included in the chassis 315, and has the insertion opening 406 that is formed on wherein, and the end of guide rail 316 is inserted into inserts in the opening 406.Support 401 makes the end of insertion guide rail 316 wherein by insertion opening 406, and as shown in Figure 12, spring 402 is arranged on wherein.Support 401 also has the threaded hole 407 that is formed on insertion opening 406 bottoms, adjusts screw 403 and is inserted in the threaded hole 407.
Above-mentioned deflection adjusting mechanism 400 inserts the height that length in the supports 401 is adjusted guide rail 316 by adjusting described adjustment screw 403.Like this, can adjust between the signal recording surface that makes object lens 312 that light beam focuses on and CD 302 angular relationship so that light beam vertically incide on the signal recording surface.
But the thickness of deflection adjusting mechanism 400 is to realize required thinner of CD drive and a problem of compact design more.Promptly, if for example to be suitable for thickness be that 9.5 millimeters hard disk drive is to reduce the thickness of CD drive itself to the thickness of VDV-ROM drive enclosure, so only can reduce the adjustment surplus of guide rail 316 height, this is because the height of the parts of CD drive is fixed.Therefore, the thickness that reduces CD drive is difficult to.
Here it should be noted, be included in the DC motor 335 that picks up in the travel mechanism 318 and comprise the housing 338 that is essentially rectangle that housing 338 integral body (comprising width) cover chassis 315, as shown in Fig. 6 A.Therefore, as shown in Fig. 6 B, housing 338 has the thickness equal widths (for example, 6 millimeters) with chassis 315.
In addition, the thickness that picks up travel mechanism 318 is to realize required thinner of CD drive and a problem of compact design more.Promptly, if for example to be suitable for thickness be that 9.5 millimeters hard disk drive is to reduce the thickness of CD drive itself to the thickness of VDV-ROM drive enclosure, the whole housing 338 that utilizes sheet metal to cover DC motor 335 so will be difficult to make the thickness of CD drive to be reduced to 9.5 millimeters, and this is because the height of the parts of CD drive is fixed.
It should be noted, in above-mentioned optical pickup units 304, actuated element 333 be by make such as the resilient material of sheet spring etc. and utilize disc spring compressing copulational protuberance 334 so that copulational protuberance 334 always with the screw-threaded engagement of guide spiro rod 331.Therefore, progressively move to desired location in order to utilize the DC motor 335 that is provided predetermined square wave pulse to make to pick up pedestal 317, copulational protuberance 334 must be movably and can not throw off with the screw thread on the guide spiro rod 331.Therefore, actuated element 333 should make its copulational protuberance 334 be bonded under the effect of powerful acting force in the screw thread on the guide spiro rod 331.
But owing to only provide lower moment of torsion as the DC motor 335 of step motor, if actuated element 333 is engaged with under the effect of very strong acting force in the screw thread on the guide spiro rod 331, guide spiro rod 331 can not rotate so, can not fast moving thereby pick up pedestal 317.
On the other hand, if be applied to the reaction force attenuation on the actuated element 333, copulational protuberance 334 will be thrown off the screw thread on the guide spiro rod 331 so, the square wave pulse of the step of predetermined quantity supplies to DC motor 335 and can not make and pick up pedestal 317 and move to preposition, picks up pedestal 317 location thereby can not make inconveniently.
Here it should be noted, in disk drive 300, because the disc holder of being made by PPE 303, the optical pickup units 304 that is fabricated from iron are bonded with each other with cap member 343 made of aluminum and are in the same place, therefore when these parts have higher temperature, their thermal linear expansion coefficient difference each other will make each part distortion.Promptly, as mentioned above, disc holder 303 is by making such as the rigid material of PPE (polyphenylene oxide), the chassis 315 that is contained in the optical pickup units 304 in the disc holder 303 is made by iron (Fe), and is installed in 315 tops, chassis and is made by aluminium (Al) by the cap member 343 that the opening in the disc holder 303 344 exposes.That is, the linear expansion coefficient of these disc holder 303, chassis 315 and cap member 343 is different each other.Particularly, the linear expansion coefficient of PPE is 2.8 * 10
-5/ mm ℃, and the linear expansion coefficient of aluminium is 2.4 * 10
-5/ mm ℃, the linear expansion coefficient of iron is 1.2 * 10
-5/ mm ℃.
When disk drive 300 is driven, when the temperature of disc holder 303, chassis 315 and cap member 343 raises, because there is such difference in the linear expansion coefficient aspect, that is,, the difference of thermal shrinkage aspect twists because producing in disc holder 303, chassis 315 and the cap member 343 each.Particularly, aluminum cap member 343 from the side of opening 344 towards CD 302 warpages and in some cases can with the signal recording surface sliding contact that is received in the CD 302 the recess 341.Especially, owing between the bottom of first wall 345 and cap member 343, have a clearance C (see figure 3) of determining, so cap member 343 will bend towards clearance C.In addition because first wall 345 is to be provided with along the neighboring of CD 302, thereby will produce bigger axial runout, might with cap member 343 sliding contacts.
Here it should be noted, in above-mentioned disk drive 300, be provided for disc holder 303 is supported on supporting mechanism 360 in the drive body 301, utilize ejector button 375 that engaging mechanism 362 and copulational protuberance 365 are thrown off.If data be written in the CD 302 or from CD 302 during reading of data mistake press by ejector button 375, disc holder 303 and drive body 301 are thrown off mutually, may produce the fault that data write or read.
Here should also be noted that, prevent that FPC310 is stuck between the rear side 302a of drive body 301 and disc holder 303 in order to be accommodated in the drive body 301 in disc holder 303, making FPC310 be formed with rigidity can be with first arm 351 of position change.
That is, when disc holder 303 is outside drive body 301, as shown in Figure 11 A, between disc holder 303 and drive body 301, has gap 356.Therefore, when disc holder 303 is accommodated in the drive body 301, if the end 351a of flexible FPC310 bends to 356 belows, gap, as shown in Figure 13, FPC310 will be stuck between disc holder 303 and the drive body 301.
Therefore, FPC310 has attached to the coating 357 on the end 351a of second arm 351.Coating 357 is compared the rigidity of the end 351a that has increased second arm 351 with rearward end 351b.Therefore, disc holder 303 outside being ejected into drive body 301 prevents FPC310 below the higher 351a place, end of its rigidity bends to gap 356 when being accommodated in the drive body 301 once more, and the flexible rearward end 351b bending of the low rigidity of second arm 351 so that disc holder 303 be moved to certainly in the drive body 301.
But, when disc holder 303 is contained in the drive body 301 fully, having attached to the coating 357FPC310 on the end of second arm 351 to make the sweep 355 of its second arm 351 shift to end 351a, and thereby as shown in Figure 11 C, make sweep 355 be formed on be arranged at optical pickup units 304 on the coupling part that links to each other of connector 354 near the position.The closer to the coupling part that links to each other with connector 354, the load on the sweep 355 is big more.But in order to make the coupling part and the distance between the sweep 355 that link to each other with connector 354 bigger, FPC310 should have very long length, thereby has increased manufacturing cost.In addition, increased rigidity, thereby also increased the load of end 351a attached to the coating 357 on the end 351a of second arm 351.In addition, because the thickness of the drive body 301 of disk drive 300 is minimized to satisfy the thin designing requirement of the main process equipment that uses disk drive 300, when drive body 301 is designed to be thin, the curvature of sweep 355 is bigger, thereby the load on the sweep 355 is also bigger.
When disc holder 303 is inserted and At time of eject repeatedly, and apply bigger load on second arm 351 of FPC310, the end 351a of second arm 351 will rupture and be formed on circuit pattern among the FPC310 with destroyed at every turn.
Summary of the invention
Therefore, an object of the present invention is, overcome the above-mentioned defective of correlation technique by a kind of improved record and/or reproducer are provided.
According to the present invention, by being provided, a kind of like this record and/or reproducer realize above-mentioned purpose, a kind of record and/or reproducer involved in the present invention comprise: pedestal; The dish rotating drive mechanism, described dish rotating drive mechanism supporting CD and CD is rotated; Optical pickup units, described optical pickup units makes the light beam that sends from light source focus on the recording surface of CD by object lens and detects the light echo that comes from CD; Guiding device, described guiding device has first leading axle and second leading axle, one end of the described first leading axle supports optical pickup unit, the other end of the described second leading axle supports optical pickup unit, the mode that first and second leading axles upwards are parallel to each other with the footpath with respect to CD is arranged on the pedestal; Light picks up drive unit, and light picks up drive unit and guided so that optical pickup units moves with respect to disc radial direction by first and second leading axles; And deflection adjusting gear, described deflection adjusting gear comprises flexible member and adjusts screw, described flexible member provides acting force along the direction of the master that is substantially perpendicular to CD for first and second leading axles, described adjustment screw contacts with first and second leading axles from a relative side of flexible member, and the gradient of utilizing the adjustment screw to adjust first and second leading axles makes described deflection adjusting gear adjust deflection.
In addition, according to the present invention, realize above-mentioned purpose by a kind of like this record and/or reproducer are provided, a kind of record and/or reproducer involved in the present invention comprise: pedestal; The dish rotating drive mechanism, described dish rotating drive mechanism supporting CD and CD is rotated; Optical pickup units, described optical pickup units makes the light beam that sends from light source focus on the recording surface of CD by object lens and detects the light echo that comes from CD; Guiding device, described guiding device has first leading axle and second leading axle, one end of the described first leading axle supports optical pickup unit, the other end of the described second leading axle supports optical pickup unit, the mode that first and second leading axles upwards are parallel to each other with the footpath with respect to CD is arranged on the pedestal; Light picks up drive unit, and light picks up drive unit and guided so that optical pickup units moves with respect to disc radial direction by first and second leading axles; And deflection adjusting gear, described deflection adjusting gear comprises flexible member and adjusts screw, described flexible member provides acting force along the direction of the master that is substantially perpendicular to CD for first and second leading axles, described adjustment screw contacts with first and second leading axles from a relative side of flexible member, and utilize to adjust screw and adjust the gradient of first and second leading axles and make described deflection adjusting gear adjust deflection, adjust screw and be conduction or electroplated and have electric conductivity and have earth potential.
In addition, according to the present invention, by being provided, a kind of like this record and/or reproducer realize above-mentioned purpose, a kind of record and/or reproducer involved in the present invention comprise: utilize the travel mechanism of picking up of step motor, described step motor comprises being bonded on the guide spiro rod that picks up in the chassis and can radially supplying with the feed element that picks up the chassis with respect to disc-shaped recording medium and engages thereon; The magnet that rotates with guide spiro rod; Act on the magnet so that the magnetic coil that guide spiro rod rotates; And the housing that holds magnet and magnetic coil, described housing have each side that is formed on its upside and downside and recess in the disc holder of picking up the chassis is installed therein and the base plate of the bottom of supporting disk carriage between opening.
In addition, according to the present invention, realize above-mentioned purpose by a kind of like this record and/or reproducer are provided, a kind of record and/or reproducer involved in the present invention comprise: the optical pickup units that wherein is provided with object lens; Make the travel mechanism of picking up that optical pickup units moves; And making picking up pedestal and picking up the joint element that travel mechanism is bonded with each other of optical pickup units, described joint element comprises the copulational protuberance that is bonded in the screw thread that is formed on the guide spiro rod; And be arranged on and pick up near the pedestal and be used to hold the compartment that the gap limits element, described compartment remains on copulational protuberance can to guarantee to be bonded on the distance on the guide spiro rod, is accommodated in gap that gap in the compartment limits element and compartment interval and is bonded on the degree of depth in the screw thread on the guide spiro rod less than copulational protuberance.
In addition, according to the present invention, realize above-mentioned purpose by a kind of like this record and/or reproducer are provided, a kind of record and/or reproducer involved in the present invention comprise: comprise the optical pickup units that picks up pedestal; The travel mechanism of picking up that comprises guide spiro rod, described guide spiro rod can make and pick up pedestal and move; And joint element, described joint element comprises and is fixed on the sidewall that picks up on the pedestal, and is formed with the copulational protuberance that is bonded on the guide spiro rod in its outside; Wherein accommodate the compartment of gap qualification element, the inside surface of described compartment supporting side walls is to keep a distance, and this is apart from the joint that can guarantee between copulational protuberance and the guide spiro rod; And be arranged on hinge on the cardinal extremity of sidewall, and described hinge is shifted to guide spiro rod or left on the direction of guide spiro rod at sidewall is flexible, the gap limits element and comprises the outside support member that extends along inside surface of side wall towards compartment.
In addition, according to the present invention, by providing a kind of like this record and/or reproducer to realize above-mentioned purpose, a kind of record and/or reproducer involved in the present invention comprise: the chassis of picking up which is provided with optical pickup units, picks up travel mechanism and dish rotating drive mechanism; Cap member, be formed with opening in the described cap member, described pickup unit and Pan Tai by described opening surface to the recording surface of disc-shaped recording medium, described cap member with pick up the chassis and link to each other and can make disc-shaped recording medium be received in the part of recess wherein with formation; And make the disc-shaped recording medium that is essentially circular receive recess to be formed on wherein disc holder, and be formed with opening in the disc holder, cap member by described opening directly in the face of the recording surface of disc-shaped recording medium and when cap member with pick up the chassis when linking to each other described opening sealed by cap member, pick up chassis, cap member and disc holder and make by the mutual different material of thermal expansivity; Described disc holder has the projection that is arranged on the wall, and described wall is arranged on the outer circumference of recess, and described projection extends to the opening top to keep the gap between the cap member of periphery wall and sealing opening.
In addition, according to the present invention, realize above-mentioned purpose by a kind of like this record and/or reproducer are provided, a kind of record and/or reproducer involved in the present invention comprise: equipment body; Disc holder, described disc holder are moved in the equipment body or move to outside the equipment body; Dish rotating drive mechanism, described dish rotating drive mechanism are arranged on the disc holder so that the disc-shaped recording medium rotation; Optical pickup units, described optical pickup units can be written to information signal disc-shaped recording medium and/or read information signal from disc-shaped recording medium; Pick up travel mechanism, the described travel mechanism of picking up can make optical pickup units move between the inside circumference of disc-shaped recording medium and neighboring; And be used for disc holder is remained on disc holder maintaining body in the equipment body, described disc holder maintaining body comprises: be used for disc holder is pressed onto the outer exemplary pressure components of equipment body; Be arranged on the copulational protuberance at equipment body place, described copulational protuberance engages with disc holder so that disc holder is bonded in the equipment body; Be arranged on the junction surface on the disc holder, described junction surface pivots along the direction that copulational protuberance is inserted in the equipment body; Contact pivot part with the junction surface, thereby can make the junction surface be bonded on the copulational protuberance or make the junction surface and the copulational protuberance disengagement with restriction junction surface range of pivot; Iron core, described iron core engage and are inserted into pivot part in the magnetic coil so that the pivot part pivot; And press and press element, described pressure contacts with pivot part by element when utilizing copulational protuberance to press by described pressure by element, thereby the direction that is engaged with on the copulational protuberance along the junction surface is exerted pressure to pivot part, when the acting force that overcomes exemplary pressure components makes disc holder be inserted in the equipment body, the junction surface compressing is pressed and is pressed element, therefore pivot part contacts by element with the pressure that the direction that is engaged with along the junction surface on the copulational protuberance pivots, thereby the junction surface is engaged with on the copulational protuberance, thereby disc holder is maintained in the equipment body; And when iron core pivoted pivotal part, the junction surface was oppressed with the direction of copulational protuberance disengagement along the junction surface, thereby under the effect of the acting force of exemplary pressure components disc holder was ejected out to outside the equipment body.
In addition, according to the present invention, realize above-mentioned purpose by a kind of like this record and/or reproducer are provided, a kind of record and/or reproducer involved in the present invention comprise: the chassis; Moving meter, described moving meter comprises the recording medium installing component, recording medium is placed on the described recording medium installing component and recording medium installing component quilt movably supports on the chassis, so moving meter can be able to outstanding forward recording medium change between position and the recording medium initial position in the chassis mobile from the chassis; And flexible cable with first and second arms, described flexible cable is flat and is essentially U-shaped, the end at the back side, sensing chassis by making first arm links to each other with connector first arm is fixed, at least a portion flexural buckling of second arm of described flexible cable when moving meter is moved, the thickness of the flexural buckling part of described flexible cable is less than other parts of flexible cable when moving meter is mobile between recording medium change position and recording medium initial position.
According to the present invention, in the above-mentioned record and/or reproducer that comprises the deflection adjusting mechanism, the end clips by the leading axle in the guiding device that will be included in supports optical pickup unit is at the taper flexible member and adjust the height of adjusting leading axle between the screw.Like this, be extruded against the free end of the flexible member of leading axle and enter into hole simultaneously with larger-diameter cardinal extremity part.Therefore, compare with the Elastic Cylindrical element, the reduction length of flexible member involved in the present invention can be shorter, so that the height of whole deflection adjusting mechanism is littler.Like this, the chassis can be designed to be thinner.
According to the present invention, in the above-mentioned record and/or reproducer that comprises the deflection adjusting mechanism, the adjustment screw that clamps leading axle be conduction or electroplated and have electric conductivity and have earth potential.Like this, the deflection adjusting mechanism can link to each other with earth potential by leading axle.Like this, can restrain the noise that produces owing to leading axle is charged.
In addition, step motor involved in the present invention is designed to be thinner, and this is owing to housing is to open wide at its top and place, bottom.Housing cap member and be separately positioned on the top of optical pickup units and the base plate at place, bottom between keep sealing.
As mentioned above, the magnetic field that is arranged in the magnetic coil of motor shell can be closed, thereby the fringe magnetic field that can prevent to come from step motor is to writing information signal on the CD or producing harmful effect from the optical disk reading information signal of winning the confidence.In addition, because the step motor housing opens wide at its top and place, bottom, therefore can easily heat be shed in housing.
In addition, in record and/or reproducer involved in the present invention, be formed on the compartment that picks up the joint element that pedestal links to each other that is provided with object lens in copulational protuberance and the guide spiro rod that is used for the depth of thread on be threadedly engaged with, and flexible member is contained in the compartment in the mode that separates an intersegmental crack with joint element, and described gap is less than the depth of engagement of copulational protuberance in the screw thread on guide spiro rod between the compartment side walls.
Therefore, be not directed under the situation of screw rod compressing at its copulational protuberance that is formed on the compartment, flexible member is received, thereby can prevent that guide spiro rod is applied in excessive acting force, guide spiro rod is applied in the rotation passivation that excessive acting force will make guide spiro rod, thereby stops and pick up moving of pedestal.
In addition, in picking up the pedestal moving process owing to the dimensional tolerence of joint element etc. causes in mismatch error can be limited in being limited between compartment and the flexible member sidewall between the screw thread on copulational protuberance and the guide spiro rod the gap.Like this, the copulational protuberance of joint element will be without any greater than the mismatch error of its depth of engagement in the screw thread on guide spiro rod and can prevent that in picking up the pedestal moving process guide spiro rod and copulational protuberance from throwing off each other.
In record and/or reproducer involved in the present invention, when the gap limited in the compartment that element is received in joint element, support member can be at the sidewall of the width upper support compartment in right side and left side.Therefore, when picking up pedestal and move or when the record that comprises joint element and/or reproducer fall, the gap limits element will alleviate load on the hinge that concentrates on the joint element that is formed on and picks up the pedestal integral installation, and the gap limits member supports and is formed with the sidewall that is bonded on the copulational protuberance on the guide spiro rod on it.Like this, the gap limits element and can prevent that record and/or reproducer are impaired.
In above-mentioned record and/or reproducer involved in the present invention, disc holder, chassis and cap member are made by the mutual different material of thermal linear expansion coefficient.Even when data are write CD or when optical disk reading is fetched data each of these parts thermal deformation appears, the projection of cap member on the lower limb of the main body of the compartment that is formed on disc holder, thus can prevent towards disc tilt.Like this, can prevent cap member and CD sliding contact.
In addition, in the record and/or reproducer that comprise engaging mechanism involved in the present invention, At time of eject in disc holder slave unit main body, the coil on the core are supplied to electric current to eliminate the magnetic force of included magnet.Pivotal part is opened pivotal area so that its bonding part bounces back from the moving track of copulational protuberance.Like this, the bonding part disengagement of copulational protuberance and pivotal part and disc holder and equipment body are thrown off.
Therefore, because by providing electric current to eliminate the magnetic force that magnetically attracts the magnet of iron core for coil on the core, thereby owing to user's maloperation disc holder is drawn out data being write CD or when optical disk reading is fetched data, can prevent.Like this, disc holder can correctly be inserted into suitable position and from wherein ejecting.
In addition, in the above-mentioned record and/or reproducer involved in the present invention, when moving meter was accommodated in the chassis, second arm of flexible cable was in its position bending near the part that links to each other with connector.But since in second arm near the rigidity of the part of coupling part less than other parts, can reduce to be applied to the bending on second arm and the load that causes.Therefore, can prevent second arm in its free end fracture, thereby can not destroy circuitous pattern.
In addition, when second portion its near with part that connector links to each other in during bending, the part of the pliability bending of second arm can reduce the load that bending causes.Distance between coupling part and the sweep is not the very long load that reduces to be applied to when being accommodated in the chassis to second arm with convenient moving meter on second arm.Like this, second arm is not oversize, thereby can reduce manufacturing cost significantly.
In addition, in the record and/or reproducer of thin formula design, because the height of flexible cable reaches minimum when moving meter is accommodated in the chassis, the load that the curvature of the sweep of cable is bigger and bigger will be applied on the sweep.But when moving meter was accommodated in the chassis, the load of the sweep of second arm can be reduced, and also can realize the thin formula design on chassis significantly.
From with reference to the accompanying drawings to finding out these purposes of the present invention and other purposes, feature and advantage the detailed description of the preferred embodiments of the present invention significantly.
Description of drawings
Fig. 1 is the decomposition diagram of conventional disk drive;
Fig. 2 is the skeleton view of the disk drive among Fig. 1;
Fig. 3 is the skeleton view of disc holder used in the disk drive among Fig. 1;
Fig. 4 is the skeleton view that is provided with the optical pickup units of conventional deflection adjusting mechanism;
Fig. 5 is the used skeleton view that picks up travel mechanism in the disk drive among Fig. 1;
Fig. 6 is the skeleton view that picks up travel mechanism among Fig. 5;
Fig. 7 is the rear view of the disc holder among Fig. 3;
Fig. 8 is the rear view of the disc holder among Fig. 7;
Fig. 9 is the planimetric map of engaging mechanism used in the disk drive among Fig. 1;
Figure 10 is the planimetric map of flexibility printed circuit board used in the disk drive among Fig. 1;
Figure 11 is the sectional view of the disk drive among Fig. 1;
Figure 12 is the sectional view of the deflection adjusting mechanism among Fig. 4;
Figure 13 is the sectional view of disc holder and equipment body, and flexibility printed circuit board is placed between them;
Figure 14 is the skeleton view of a notebook computer, and record involved in the present invention and/or reproducer wherein are housed;
Figure 15 is the record involved in the present invention and/or the decomposition diagram of reproducer;
Figure 16 is the record among Figure 15 and/or the sectional view of reproducer;
Figure 17 is the rear view of the disc holder among Figure 16;
Figure 18 also is the rear view of the disc holder among Figure 16;
Figure 19 is the planimetric map of engaging mechanism used in record among Figure 15 and/or the reproducer;
Figure 20 also is the planimetric map of the engaging mechanism among Figure 19;
Figure 21 is the planimetric map of optical pickup units used in record among Figure 15 and/or the reproducer;
Figure 22 is the sectional view of deflection adjusting mechanism used in record among Figure 15 and/or the reproducer;
Figure 23 is the sectional view of the modification of the deflection adjusting mechanism among Figure 22;
Figure 24 is the sectional view of the another kind of modification of the deflection adjusting mechanism among Figure 22;
Figure 25 is the used planimetric map that picks up travel mechanism in record among Figure 15 and/or the reproducer;
Figure 26 is the skeleton view of joint element used in record among Figure 15 and/or the reproducer;
Figure 27 is the decomposition diagram of the joint element among Figure 26;
Figure 28 is the side view of the joint element among Figure 26;
Figure 29 is the planimetric map that is connected with the optical pickup units of cap member;
Figure 30 is the skeleton view of the modification of the joint element among Figure 26;
Figure 31 has the skeleton view that the gap that is accommodated in the compartment limits the joint element (as shown in Figure 30) of element;
Figure 32 is the planimetric map of the joint element among Figure 31;
Figure 33 is the skeleton view of the another kind of modification of the joint element among Figure 26;
Figure 34 has the planimetric map that the gap that is accommodated in the compartment limits the joint element (as shown in Figure 33) of element;
Figure 35 is the planimetric map of the joint element among Figure 34;
Figure 36 is the skeleton view with disc holder of the recess that is used for take-up reel;
Figure 37 is the planimetric map that is used to make disc holder and the interconnective flexibility printed circuit board of equipment body;
Figure 38 is the skeleton view that utilizes interconnective disc holder of flexibility printed circuit board and equipment body;
Figure 39 is when disc holder sectional view of the flexibility printed circuit board when mobile between two positions inside and outside equipment;
Figure 40 is the record involved in the present invention and/or the block diagram of reproducer;
Figure 41 has illustrated the zone that optical pickup units progressively moves;
Figure 42 shows the sequence of operation of the pulsed drive of optical pickup units when record and/or reproducer startup; And
Figure 43 shows in be hit by a bullet out the sequence of operation of pulsed drive of CD time pickup unit of record and/or reproducer.
Embodiment
Now with reference to the accompanying drawings record involved in the present invention and/or reproducer (below will be referred to as " dish recorder/player ") are described in detail.The dish recorder/player of representing with Reference numeral 1 is the disk drive such as CD (compact disc, compact disk), DVD optical disc replays such as (Digital video disc, digital versatile disc).Dish recorder/player 1 will be installed in the driver slot (bay) of main process equipment of all notebook computers as shown in Figure 14 etc.
Referring now to Figure 15, wherein the form with decomposition diagram schematically shows dish recorder/player 1.As shown in FIG., dish recorder/player 1 comprises: disc holder 5 is placed on wherein such as the CD 4 of DVD etc.; And link to each other with disc holder 5 and read the optical pickup units 6 of information signal from being placed on CD 4 on the disc holder 5.In addition, be installed on the compactness and the design of thin formula of main process equipment 2 wherein corresponding to dish recorder/player 1, dish recorder/player 1 has the main body (following be referred to as " equipment body " under situation about being fit to) 7 of the height that is designed to have 9.5 millimeters, as shown in Figure 16, for example the height of equipment body equals the height of hard disk drive.At thickness or highly be that the physical dimension of each parts is as follows in 9.5 millimeters the equipment body 7.Promptly, the thickness of CD 4 or highly be 1.2 millimeters, the axial runout of CD 4 is ± 0.5 millimeter, the height of the disc holder 5 that links to each other with optical pickup units 6 is 5.2 millimeters, the surface and the gap thickness between the CD 4 of the placement CD 4 of disc holder 5 are 0.4 millimeter, gap between the bottom of disc holder 5 and equipment body 7 is 0.4 millimeter, is bonded with each other to be respectively 0.4 millimeter and 0.5 millimeter with the first half 8 of the shell of forming device main body 7 and the thickness of Lower Half 9.
The main body 7 of dish recorder/player 1 is that the first half 8 and the Lower Half 9 by mutual butt joint constitutes.By sheet metal punching press and boring are formed the first half 8 and Lower Half 9.
The Lower Half 9 of equipment body 7 is provided with circuit board 17, be formed with on the circuit board 17 operation that is used for console panel recorder/player 1 control circuit, be used to make interconnecting connector that dish recorder/player 1 links to each other with main process equipment 2 etc.In addition, Lower Half 9 is opened wide at the one end, and disc holder 5 can be pulled to outside the equipment body 7 at this end place, and Lower Half 9 has the rear wall 9a that is formed on the end place relative with its open end.Lower Half 9 also has outstanding sidewall 9b and the 9c that forms along the opposite edges that are provided with open end and rear wall 9a therebetween.
On relative sidewall 9b and 9c, be provided with and be used for boot disk carriage 5 and be inserted in equipment body 7 or the slave unit main body 7 guide rail 12 that ejects, described guide rail 12 extends to open end from the rear wall 9a of Lower Half 9.Each guide rail 12 adopt basic for C shape and have be formed on wherein towards the C of equipment body 7 shape recess 12a.Guide rail 12 has the guiding piece 13 that links to each other with disc holder 5 that is sliding engaged in its recess 12a.In addition, the sliding scale that is formed with restriction guiding piece 13 on the guide rail 12 surpasses the backstop 14 of predetermined length with the length that prevents disc holder 5 slave unit main bodys 7 and pull out.
The guiding piece 13 that is bonded in the guide rail 12 has the cross section of C shape basically, and can make in disc holder 5 slips of both sides relatively.When ejecting in the disc holder 5 slave unit main bodys 7 or being inserted in the equipment body 7, guiding piece 13 slides on guide rail 12 and smoothly moves with boot disk carriage 5.
In addition, Lower Half 9 is provided with outstanding copulational protuberance 11, and copulational protuberance 11 is bonded on and is used for disc holder 5 is fixed on fixed mechanism 18 in the equipment body 7.To be described in detail fixed mechanism 18 below.In addition, be provided with the printed-wiring board (PWB) 17 that is formed with driving circuit on it near rear wall 9a on the Lower Half 9.Printed circuit board (PCB) 17 comprises so-called rigid circuit substrate.It has formation thereon wiring pattern and will be installed in wiring pattern such as the various electronic units of the connector that is used to connect external unit.In addition, the FPC (flexible print wiring) 23 that links to each other with optical pickup units 6 is housed on the printed-wiring board (PWB) 17.To be described in detail FPC25 below.
Be formed with in the disc holder 5 that is inserted in the equipment body 7 or ejects in the slave unit main body 7 and can make CD 4 be received in wherein recess 15.Recess 15 is circular basically, and has the opening 16 that is formed on its master, and Pan Tai directly faces CDs 4 with the object lens that are contained in the optical pickup units 6 in the disc holder 15 by opening 16.Opening 16 extends to the front end 5a of disc holder 5 basically from the center of recess 15.In addition, be installed in cap member and the Pan Tai on the chassis of optical pickup units 6 and be installed on the chassis and be exposed on the CD 4 by opening 16 by the supine object lens of cap member.
Be provided with a plurality of copulational protuberances 25 that engage with optical pickup units 6 in the compartment 21.When copulational protuberance 25 was engaged with in a plurality of conjugate foramens in the chassis that is formed at optical pickup units 6, compartment 21 linked to each other with optical pickup units 6.
Be formed with on the disc holder 5 and be inserted into equipment body 7 neutralization along disc holder 5 and be ejected into the direction extension equipment body 7 outside and be bonded on guide protrusion 22 on the guiding piece 13.Guide protrusion 22 is fixed in the above-mentioned guiding piece 13 slidably with insertion and the ejection of boot disk carriage 5 with respect to equipment body 7.In addition, guide protrusion 22 has the 5d place, its rear end that is arranged on equipment body 7 and towards the stop part at each place, end of the front end 5a of the disc holder 5 that is drawn out.Here stop part is not described in detail.They can prevent that disc holder 5 and guiding piece 13 from throwing off and being projected into the front end 5a of guiding piece 13.
At first be described disc holder 5 being pressed onto equipment body 7 outer above-mentioned compression mechanisms 19.
As shown in Figure 17, compression mechanism 19 uses the disc spring 28 at the rear side 5a place that is arranged on disc holder 5 that disc holder 5 is urged to outside the equipment body 7.Disc spring 28 is contained near the spring compartment 29 that is formed at the guide protrusion 22 and extends with the direction that is inserted in the equipment body 7 along disc holder 5 or ejects in the slave unit main body 7.Disc spring 28 has the hollow structure that shaft-like ejection element 30 is inserted wherein.Eject among the patchhole 29b in the wall 29 that element 30 can be inserted into the front end 5a that is respectively formed at spring compartment 29 and rear end 5b place.In addition, ejecting element 30 has and is formed on the flange 30a that is roughly its mid-length place.When the end that utilizes disc spring 28 during, eject element 30 and be crushed on the step 29c that rear end 5b and utilization be formed on the 5b place, rear end of spring compartment 29 and make flange 30a be maintained at its opposite side place at the presses flange 30a of one side place.At this moment, be projected into equipment body 7 towards the part that rear end 5b extends by the patchhole 29b the wall 29a that is formed on spring compartment 29 from flange 30a in the ejection element 30.
When disc holder 5 was inserted in the equipment body 7, the part of giving prominence to towards equipment body 7 in the ejection element 30 was against the rear wall 9a place of Lower Half 9.Along with disc holder 5 is further inserted, ejection element 30 is from rear wall 9a back pressure and shift to front end 5a, as shown in Figure 18, utilizes flange 30a that disc spring 28 is pressed to rear end 5d.Because utilize the wall 29a of spring compartment 29 to make disc spring 28 be maintained at front end 5a place at one end place this moment, so it is compressed and keep flange 30a is pressed to the acting force of rear end 5d by flange 30a.Then, when utilization was arranged on engaging mechanism 20 on the disc holder 5 and makes disc holder 5 keep being bonded on equipment body 7 in, the acting force of rear end 5d was pressed to flange 30a in disc spring 28 maintenances.To be described in detail engaging mechanism 20 below.
When utilizing engaging mechanism 20 that disc holder 5 is thrown off after above-mentioned action, above-mentioned ejection element 30 receptions that utilize disc spring 28 to oppress are equivalent to from the retroaction of the acting force of the disc spring 28 of rear wall 9a and utilize flange 30a that disc spring 28 back pressure are arrived front end 5a.Kept by the wall 29a of disc spring compartment 29 owing to be in the end at front end 5a place in the disc spring 28, so disc spring 28 when being pressed to front end 5a, wall 29a is extracted.Like this, disc holder 5 is forced out towards the open end of equipment body 7, and the front end 5a of disc holder 5 is outstanding towards the open end of equipment body 7.Like this, disc holder 5 can be drawn out.It should be understood that, utilize disc spring 28 will eject element 30 and press to rear end 5b at flange 30a place, eject in the element 30 and give prominence to towards equipment body 7 by the patchhole 29b the wall 29a that is formed on spring compartment 29 towards the part that rear end 5d extends, as shown in Figure 16 from flange 30a.
Next, will the engaging mechanism 20 that disc holder 5 is bonded in the equipment body 7 be described.As shown in Figure 17 to Figure 20, engaging mechanism 20 comprises and is arranged on the equipment body 7 and can engages with disc holder 5 and holding tray carriage 5 is bonded on copulational protuberance 11 in the equipment body 7, be arranged on the disc holder 5 and junction surface 41 that the direction on the copulational protuberance 11 that can be bonded on disc holder 5 is forced to pivot, can be by making junction surface 41 be bonded on copulational protuberance 11 with range of pivot that junction surface 41 contacted and limited junction surface 41 or making it and pivotal part 42 that copulational protuberance 11 is thrown off, engage and be inserted into pivotal part 42 on the core in the coil 44 so that the iron core 45 that pivotal part 42 pivots and be subjected to copulational protuberance 11 compressings with the pressuring piece 46 that contact with pivotal part 42 and 41 directions that will engage with copulational protuberance 11 are oppressed pivotal parts 42 along the junction surface.
As shown in Figure 15, copulational protuberance 11 is arranged on the above-mentioned Lower Half 9 and is projected near the open end of guide rail 12.Copulational protuberance 11 is substantially shaped as cylindrical.When disc holder 5 is inserted in the equipment body 7, copulational protuberance 11 will be bonded on the junction surface 41 that is formed at disc holder 5 places so that disc holder 5 is in the equipment body 7.
As shown in Figure 19, the junction surface 41 that is bonded on the copulational protuberance 11 comprises: be used to be bonded on bonding part 48 on the copulational protuberance 11, shape ankus; Main body 49 with the bonding part 48 that is formed on its free end; Be arranged on the studding 50 of the base end side of main body 49, and studding 50 is as the pivot at junction surface 41; And the bearing part 51 that can contact with pivotal part 42, will be described in detail pivotal part 42 below.Junction surface 41 pivots around studding 50 along arrow D direction shown in Figure 19 or the direction opposite with arrow D, and torsion-coil spring 52 is wound on the studding 50 to oppress the arrow D direction that junction surface 41 makes it in Figure 19 all the time and pivots.
The pivotal part 42 of the range of pivot at restriction junction surface 41 comprises: range of pivot restriction projection 55, and the bearing part 41 at range of pivot restriction projection 55 compressing junction surfaces 41 is with the restriction range of pivot; Be used as the studding 56 of the pivot of pivotal part 42; Contact and be subjected to the contact portion 57 of pressuring piece 46 compressings with pressuring piece 46; And the coupling part 58 that links to each other with iron core 45.
When the arrow D direction pressurized of junction surface 41 in Figure 19, so all the time, keep in touch with bearing part 51 and pivot along arrow E direction or the direction opposite with arrow E, range of pivot restriction projection 55 is utilized the range of pivot at bearing part 51 restriction junction surfaces 41.
The coupling part 58 that links to each other with iron core 45 is formed with the projection 58a that can insert by the connecting hole 45a that is formed in the iron core 45 in the one side.When utilizing pressuring piece 46 to make pivotal part 42 when the direction opposite with arrow E pivots, coupling part 58 makes iron core 45 shift to coil 44 on the core.When iron core 45 was on the core in the coil 44, pivotal part 42 kept towards the direction opposite with arrow E.
In addition, contact portion 57 resilient movement of oppressed 46 compressing but slit 61 is formed between contact portion 57 and the coupling part 58.Therefore, being formed on projection 60 on the contact portion 57 allows pressuring pieces 46 that pivotal part 42 is pivoted and pivotal part 42 is on the core in the coil 44 iron core 45, and when 57 oppressed 46 of contact portions were excessively exerted pressure, slit 61 can come absorption pressure by making contact portion 57 deflections.
The pivotal part 42 of being oppressed by torsion-coil spring 59 in the direction of the arrow E in Figure 19 makes range of pivot restriction projection 55 pivot to contact with the bearing part 51 at junction surface 41 and junction surface 41 is pivoted along the direction opposite with arrow D along the direction of arrow E.Like this, throw off with the copulational protuberance 11 on the Lower Half 9 that is arranged on equipment body 7 vertically and disc holder 5 is ejected out to outside the equipment body 7 bonding part 48 at junction surface 41.
In addition, be inserted in the equipment body 7 and during contact portion 57 oppressed 46 (below will be described in greater detail) compressing, pivotal part 42 pivots along the direction opposite with arrow E when disc holder 5.When the iron core 45 that links to each other with contact portion 57 is on the core in the coil 44, range of pivot restriction projection 55 along the direction opposite with arrow E so that the direction of the arrow D of junction surface 41 in Figure 20 pivot.Like this, the bonding part 48 at junction surface 41 is engaged with on the copulational protuberance 11 and disc holder 5 is in the equipment body 7.
Make pivotal part 42 point to the magnetic element of iron core 45 for taking the shape of the letter U basically of the direction opposite with arrow E.It has a pair ofly can be inserted into the insertion axle 63 in the coil 44 on the core, and has the connecting hole 45a that is formed in its cardinal extremity part.By the projection 58a on the coupling part 58 that is formed on pivotal part 42 is inserted among the connecting hole 45a, iron core 45 links to each other with pivotal part 42.
Can make the insertion axle 63 of iron core 45 lead to coil 44 on wherein the core and have coil 66 on hollow core of being wrapped in 65, insert axle 63 and can be inserted in the hollow core 65.In addition, coil 44 comprises and can insert the magnet (not shown) of axle 63 away from the insertion end of inserting axle 63 along the direction magnetic attraction of arrow F among Figure 19 on the core.When pivotal part 42 pivots and the insertion axle 63 of iron core 45 when being inserted on the core in the coil 44 more deeply along the direction opposite with arrow E, as shown in Figure 20, insert on axle 63 cores magnet in the coil 44 and fix.In addition, when electric current is provided for coil 66, coil 44 will be eliminated magnetic attraction and insert the magnetic force of magnet of axle 63 to discharge iron core 45 on the core.Like this, when iron core 45 was released, pivotal part 42 direction along arrow E under the effect of the acting force of torsion-coil spring 59 pivoted.
Pressuring piece 46 can pivot around studding 71 along the direction of the arrow G among Figure 19 or the direction opposite with arrow G, and torsion-coil spring 73 is wrapped in the position of intersecting with the moving track that can make arm 70 and copulational protuberance 11 that pressuring piece 46 is remained on as shown in Figure 19 on the studding 71.Promptly, after arm 70 is engaged projection 11 compressings, utilize torsion-coil spring 73 to make pressuring piece 46 get back to initial position, thereby even pivot so that pivotal part 42 pivots or can make pivotal part 42 along the direction pivot opposite with arrow G when contact portion 57 is conflicted with the pivotal part 42 that pivots along the direction of arrow E along the direction opposite with arrow E along the direction of arrow G.
The torsion-coil spring 73 of position of restriction pressuring piece 46 be wrapped on the studding 71 and clamping element 75 that the fixing and other end of oppressed 46 at one end is formed on the rear side 5c of disc holder 5 fixing.Clamping element 75 comprises semicircle keeper 75a and rectangle keeper 75b, has constant gap between semicircle keeper 75a and the rectangle keeper 75b.Torsion-coil spring 73 is inserted in the gap at its other end place and is wrapped on the semicircle keeper 75a.Because keeper 75a be a semicircle, and keeper 75b is a rectangle, so torsion-coil spring 73 can not be wrapped on the keeper 75b, but only is wrapped on the semicircle keeper 75a.Therefore, torsion-coil spring 73 applies the best use of power on pressuring piece 46, so that pressuring piece 46 is engaged projection 11 compressing and can gets back to the initial position that the moving track of arm 70 and copulational protuberance 11 intersects along the pivotal part 42 that the direction or the direction opposite with arrow G of arrow G pivots.
What note is, the position in the zone that pivots near arm 70 with in a side relative with the direction of arrow G, be provided with the backstop 80 that can stop arm 70 excessive pivotals.For example, backstop 80 is arranged on the cylindrical projections on the rear side 5c of disc holder 5.When the contact portion 57 of the pivotal part 42 that pivots along the direction of arrow E with will be when the pressuring piece 46 that the direction opposite with arrow G pivots be conflicted, as shown in phantom in Figure 19, backstop 80 limits arms 70 along the direction excessive pivotal opposite with arrow G.Like this, pressuring piece 46 can guarantee that arm 70 can get back to the moving track of copulational protuberance 11.
Particularly, if arm 70 is not got back to the moving track of copulational protuberance 11, copulational protuberance 11 will not allow arm 70 (moving) when disc holder 5 is inserted in the equipment body 7.Like this, pressuring piece 46 can not make pivotal part 42 can not pivot to be bonded on the copulational protuberance 11 along the direction of arrow D along the direction pivot and the junction surface 41 of arrow E.Like this, the range of pivot of the arm 70 of pressuring piece 46 with backstop of being subjected to 80 restriction must be able to be got back to the moving track of copulational protuberance 11 to guarantee arm 70.
In the above-mentioned engaging mechanism 20 that comprises copulational protuberance 11, junction surface 41, pivotal part 42, iron core 45 and pressuring piece 46, in the time of outside disc holder 5 is positioned at equipment body 7, pivotal part 42 is oppressed along the direction of arrow E, the retaining wall 81 that is set on the disc holder 5 keeps, and pivots along the direction of arrow E as shown in Figure 19 thereby limit it.In addition, the range of pivot restriction projection 55 of junction surface 41 by pivotal part 42 makes its bearing part 51 pivot and its bonding part 48 is remained on from the position of the moving track withdrawal of copulational protuberance 11 along the opposite direction of arrow D.Therefore, Lower Half 9 with equipment body 7 of copulational protuberance disposed thereon vertically 11 is thrown off mutually with disc holder 5, the rear wall 9a of Lower Half 9 is subjected to being set at the compressing of the ejection element 30 of disc spring 28 compressings on the disc holder 5, and disc holder 5 is ejected into outside the equipment body 7.
When the user put into CD 4 in the recess 15 of disc holder 5 and is inserted into disc holder 5 in the equipment body 7, the direction that is arranged on the arrow H of copulational protuberance 11 in Figure 19 on the Lower Half 9 was advanced and is contacted with the arm 70 of pressuring piece 46.Like this, the direction of the arrow G of arm 70 in Figure 20 pivots.When arm 70 pivots like this, the contact portion 57 of the pivotal part 42 that compressing part 72 compressings of pressuring piece 46 will pivot along the direction opposite with arrow E among Figure 20.Like this, the iron core 45 that links to each other with the coupling part 58 of pivotal part 42 will make and insert axle 63 and be inserted on the core in the coil 44 dearly and be set at the magnet magnetic attraction in the coil 44 on the core.
At this moment, pressuring piece 46 compressing be formed on the contact portion 57 with compressing part 72 contacts of pressuring piece 46 projection 60 so that pivotal part 42 pivot along the direction opposite with arrow E, thereby make iron core 45 can be set at the magnet magnetic attraction in the coil 44 on the core.In addition, be formed on the contact portion 57 of pivotal part 42 and the slit 61 between the coupling part 58 and make contact portion 57 resilient movement.Therefore, when excessively oppressing for oppressed 46, but contact portion 57 deflections are with the pressure of excessive resorption.
Like this, the acting force that overcomes the torsion-coil spring 59 that the direction of the arrow E in Figure 20 provides makes iron core 45 and pivotal part 42 pivot along the direction opposite with arrow E among Figure 20.When the range of pivot of pivotal part 42 restriction projection 55 when the direction opposite with arrow E pivots, junction surface 41 has its range of pivot that increases along the direction of arrow D and as shown in Figure 20, and the acting force of the torsion-coil spring 52 that the direction of the arrow D in Figure 20 provides is positioned on the moving track of copulational protuberance 11 bonding part 48.
When disc holder 5 is inserted in the equipment body 7 more deeply, the direction of the arrow H of copulational protuberance 11 in Figure 20 is advanced, inclined-plane 49a is pivoted on the free end of the main body 49 at junction surface 41 along the direction opposite with arrow D, and be bonded on the bonding part 48.Like this, the Lower Half 9 of disc holder 5 and equipment body 7 is bonded with each other.
At this moment, as shown in Figure 18, ejection element 30 pushes back and moves towards front end 5a from the rear wall 9a of Lower Half 9, utilizes its flange 30a that disc spring 28 is pressed to front end 5a simultaneously.Because disc spring 28 makes its end at front end 5a place be fixed by the wall 29a of spring compartment 29, so it is oppressed by flange 30a, can make flange 30a be pressed towards the acting force of rear end 5d thereby be compressed with maintenance.That is, disc holder 5 is fixed on the appropriate position in the equipment body 7, simultaneously Lower Half 9 is pressed to rear end 5d and is arranged on junction surface 41 on the copulational protuberance 11 on the Lower Half 9 with joint.
For with ejecting in the disc holder 5 slave unit main bodys 7, provide the control circuit that comes from the user's control module command signal that is arranged on the disc holder 5 and be built in the magnetic force of the magnet in the coil 44 on the core with elimination for coil on the core 44 provides electric current.Like this, iron core is released.Therefore, pivotal part 42 pivots along the direction opposite with arrow E among Figure 19 under the effect of the acting force of torsion-coil spring 59.When range of pivot restriction projection 55 when the direction of arrow E pivots, junction surface 41 pivots and is withdrawn from the moving track of copulational protuberance 11 in its bonding part 48 along the direction opposite with arrow D.Like this, copulational protuberance 11 is thrown off with bonding part 48, so that the Lower Half 9 of disc holder and equipment body 7 is thrown off mutually.
Then, its free end is urged the retroaction that ejection element 30 on the rear wall 9a of Lower Half 9 is provided the acting force of the disc spring 28 that is equivalent to come from rear wall 9a, thus make disc spring 28 by flange 30a back pressure to front end 5a.Because disc spring 28 makes its end at front end 5a place be fixed by the wall 29a of spring compartment 29, so it is extracted and simultaneously compartment 29a is pressed to front end 5a.Like this, disc holder 5 is extruded by the open end towards equipment body 7, and its front end 5a is ejected towards the open end of equipment body 7.
What note is, owing to make the compressing part 72 of pressuring piece 46 conflict with the contact portion 57 of pivotal part 42 and therefore make when oppressing part 72 along the direction pivot opposite with arrow G when pivotal part 42 pivots along the direction of arrow E, therefore arm 70 is also kept by backstop 80, can avoid arm 70 excessive pivotals and is not on the moving track of copulational protuberance 11.In addition, being wrapped in torsion-coil spring 73 on the pressuring piece 46 can be formed on holding element 75 on the rear side 5c of disc holder 5 and remain on suitable position and thereby provide best acting force for pressuring piece 46.Therefore, even when pressuring piece 46 has been engaged 42 compressings of projection 11 and pivotal part and along the direction of arrow G or when the direction opposite with arrow G pivots, pressuring piece 46 is got back to the initial position that the moving track of arm 70 and copulational protuberance 11 shown in the solid line among Figure 19 intersects.
What note is, the projection 60 on the above-mentioned contact portion 57 that is formed on pivotal part 42 can be formed on the compressing part 72 of pressuring piece 46 or on pivotal part 42 and the pressuring piece 46.
To the optical pickup units 6 in the compartment 21 that be installed on the rear side 5c place that is arranged on disc holder 5 be described below.
As shown in Figure 21, optical pickup units 6 comprises: the chassis 101 that forms unit main body; With chassis 101 integrally formed dish platforms 102, and CD 4 is placed on the dish platform 102; Be used for the writing information signal to being placed on the optical take-up apparatus 103 that coils the CD 4 on the platform 102 or read information signal from CD 4; Make optical take-up apparatus 103 pick up travel mechanism 104 with respect to what CD 4 moved radially; A pair of leading axle 105 and 106, leading axle 105 and 106 are used for moving of direct light pick device 103 under the effect of picking up travel mechanism 104; And deflection adjusting mechanism 109, the gradient that deflection adjusting mechanism 109 can be arranged on by the gradient adjustment of adjusting leading axle 105 and 106 between the signal recording surface of object lens 108 and CD 4 on the optical take-up apparatus 103 concerns.
As shown in FIG., be used to write or read information signal to being placed on the CD 4 on the dish platform 102 or comprising by what the housing that is essentially rectangle formed from the optical take-up apparatus 103 that CD 4 write or read information signal and to pick up pedestal 114.In photodetector (not shown) that picks up the reflection ray that at least one light source (not shown) such as semiconductor laser is installed on the pedestal 114, is used to make from the light emitted to the CD object lens 108 that the light beam on 4 the signal recording surface focuses on, is used to detect the recording surface that comes from CD 4 and the drive system that object lens 108 are moved along the direction that focuses on and follow the tracks of CD 4.In addition, optical take-up apparatus 103 has the patchhole 116 that is formed among the longitudinal end 114a who picks up pedestal 114, and leading axle 105 is inserted in the patchhole 116, optical take-up apparatus 103 is formed with junction surface 117 at its 114b place, another end, and junction surface 117 is engaged with on the leading axle 106.To be described in detail leading axle 105 and 106 below.Pick up and be formed with flexibility printed circuit board 119 on the pedestal 114, be formed with the driving circuit that is used to control about the drive system of object lens 108 grades on the flexibility printed circuit board 119.
In addition, also be formed with the joint element 120 with leading axle 105 adjacent settings on the optical take-up apparatus 103, joint element 120 engages with the guide spiro rod 140 that picks up travel mechanism 104 so that pick up pedestal 114 and move.
Optical take-up apparatus 103 is supported on respectively leading axle that the opposed edges of the opening 112 in the chassis 101 is provided with on 105 and 106, utilize leading axle 105 and 106 direct light pick devices 103, so that optical take-up apparatus 103 is mobile between the internal and external circumference of CD 4, and make its object lens 108 expose the signal recording surface of CDs 4 by opening 112.
Relatively be provided for the paired leading axle 105 and 106 that direct light pick device 103 moves with the opening 112 in the chassis 101.Leading axle 105 (106) is thinner than major part in its opposite two ends.For example, the end diameter of leading axle 105 (106) is about 1.2 millimeters.The deflection adjusting mechanism 109 that utilization can be adjusted the vertical slope of leading axle 105 and 106 makes leading axle 105 (106) supported in its opposite two ends.Leading axle 105 and 106 is made by conductive material.Because the adjustment screw that is used in combination with each leading axle is also made by conductive material, the ground connection of therefore adjusting screw can be removed the electric charge on leading axle 105 and 106.
As shown in Figure 21, deflection adjusting mechanism 109 is arranged on four positions corresponding to the opposed end of paired leading axle 105 and 106.As can be seen from Figure 22, deflection adjusting mechanism 109 comprises: be arranged on the housing 125 in the chassis 101; Be arranged in the housing 125 and oppress the flexible member 126 of leading axle 105 and 106; And cross the adjustment screw 127 that leading axle 105 (106) is arranged on a side relative with flexible member 126, described adjustment screw 127 is compeled leading axle 105 (106) from a side pressure relative with flexible member 126.
When leading axle 105 (106) was adjusted screw 127 compressings, flexible member 126 was pressed and therefore is compressed between the inwall of leading axle 105 (106) and housing 125.At this moment, flexible member 126 is compressed to 1 millimeters long or littler length, and it moves in the bigger cardinal extremity 126b of diameter against the less end 126a of the diameter of leading axle 105 (106) simultaneously.Therefore, compare with the Elastic Cylindrical element that can be compressed to 1 millimeter or bigger length, the flexible member 126 that is used for the present invention can be compressed to littler length.Like this, housing 125 integral body can be designed to have the form of less thickness, and for example thickness is about 4 millimeters, and chassis 101 can be designed to be thinner.
In addition, adjusting screw 127 is inserted in the threaded hole 129 among the downside 101b that is formed on chassis 101 and has free end with the following side contacts of leading axle 105 (106).Extend into length in the housing 125 by adjusting described adjustment screw 127, for example can ± 0.4 millimeter gradient of adjusting leading axle 105 and 106 for one-level.
What note is that adjusting screw 127 is nickel plating or copper-plated so that it has electric conductivity.Adjust screw 127 also as the earth conductor of leading axle 105 (106), this is because it links to each other with the downside 101b on the chassis 101 that is in earth potential and against the lower surface of leading axle 105 (106).
Above-mentioned deflection adjusting mechanism 109 is arranged on four positions corresponding to the opposed end of each leading axle 105 and 106.In the assembling process of optical pickup units 6, deflection adjusting mechanism 109 is used in combination with the deflection adjustment dish of the gradient that is used to adjust leading axle 105 and 106 so that vertically incide the signal recording surface of deflection adjustment dish from the light beam of object lens 108 projections, and therefore adjusts the gradient relation between the signal recording surface of object lens 108 and deflection adjustment dish.
After utilizing deflection adjusting mechanism 109 to finish deflection to adjust, utilize cementing agent fixedly flexible member 126 to prevent the angle of deviation change.That is, as shown in Figure 23, deflection adjusting mechanism 109 has the cementing agent filling orifice 131 and 132 among the upside 101a that is formed on housing 125 and chassis 101.Cementing agent filling orifice 131 and 132 positions that form are corresponding to the position of flexible member 126.For example, the cementing agent 133 of ultraviolet setting type is injected in cementing agent filling orifice 131 and 132.
In the assembling process of optical pickup units 6, utilize the adjustment screw 127 of deflection adjusting mechanism 109 to adjust the gradient of leading axle 105 and 106 and then inject cementing agent 133 so that flexible member 126 sclerosis from cementing agent filling orifice 131 and 132.Like this, owing to can utilize cementing agent 133 to make flexible member 126 sclerosis, even therefore flexible member 126 is owing to plastic yield takes place in compression, deflection adjusting mechanism 109 also can keep the suitable gradient of leading axle 105 and 106.
What note is, is formed on the cementing agent filling orifice 131 in chassis 101 and the housing 125 and 132 diameter is very little and a kind of like this liquid adhesive 133 of injecting by their will be owing to its surface tension can not be from the chassis 101 overflows.
In addition, deflection adjusting mechanism 109 uses oval section volute spring as flexible member 126, but as shown in Figure 24, it can use the silicon rubber hollow circuit cylinder to replace.One end of silicon rubber hollow circuit cylinder contacts with the upper surface of leading axle 105 (106), and the other end contacts with the inwall of housing 125.
When leading axle 105 and 106 was adjusted screw 127 compressings, silicon rubber flexible member 126 was compressed between the inwall of leading axle 105 (106) and housing 125.At this moment, make flexible member 126 compressions by dwindling the volume that is compressed to the part in the flexible member 126.In addition, after finishing the deflection adjustment, utilize by cementing agent filling orifice 131 and the 132 ultraviolet ray setting type cementing agents 133 that inject and make flexible member 126 sclerosis.Like this, owing to utilize cementing agent 133 to make flexible member 126 harden, even therefore flexible member 126 owing to being adjusted screw 127 compressions plastic yield takes place, deflection adjusting mechanism 109 also can keep the suitable gradient of leading axle 105 and 106.
What note is, make flexible member 126 have electric conductivity flexible member 126 to be linked to each other with the downside 101b on the chassis 101 that is in earth potential and flexible member 126 is contacted with the lower surface of leading axle 105 (106), also can make leading axle 105 and 106 be used as an earth conductor by add a kind of adjuvant for silicon rubber flexible member 126.
In above-mentioned deflection adjusting mechanism 109, the housing 125 that wherein is provided with flexible member 126 and adjustment screw 127 is between the upside 101a and downside 101b on chassis 101.Like this, the space of elastic elements 126 is flattened, compare with the conventional chassis that the support member that is used in the leading axle of deflection adjusting mechanism by deep draw is formed at wherein, this has caused the thinner design and the simpler technology of the manufacturing on chassis 101.
Be used to make optical take-up apparatus 103 with respect to CD 4 move radially pick up travel mechanism 104 be arranged on leading axle 105 near.As shown in Figure 21 and Figure 25, pick up travel mechanism 104 and comprise guide spiro rod 140 adjacent with leading axle 105 and that be provided with along the radial parallel of CD 4 in leading axle 105 and the feeding motor 141 that guide spiro rod 140 is rotated.
The feeding motor 141 that guide spiro rod 140 is rotated is the DC motors that adopt step motor.By provide square wave to make the 141 step-by-step movement work of feeding motor for feeding motor 141, guide spiro rod 140 is rotated so that pick up pedestal 114 and move radially with respect to CD 4.
The feeding motor 141 that guide spiro rod 140 is rotated is DC motors.Unless since the DC motor do not provide any moment of torsion it with high-speed rotation, therefore, each contact point that picks up travel mechanism 104 will be subjected to heavy wear.In addition, pick up pedestal 114 if the feeding motor links to each other with guide spiro rod 140 by gear mechanism and move, will send very big gimp so.
Therefore, the feeding motor among the present invention 141 uses a kind of stepping motors.By for feeding motor 141 provides square wave, feeding motor 141 makes and picks up pedestal 114 and move radially with respect to CD 4.
As shown in Figure 25 A and Figure 25 B, feeding motor 141 has motor shell 145, and motor shell 145 does not have upper wall and lower wall.Be formed with opening 142 in the motor shell 145, the coil that is mounted in it 146 by opening 142 from the exposed at both sides up and down of motor 145 outside.Because opening 142 do not have upper wall and lower wall, so motor shell 145 can be designed to be thinner, and for example wall thickness is 5.1 millimeters.
Feeding motor 141 and guide spiro rod 140 are installed on the framework 148, and are installed on the chassis 101, and framework 148 is installed between them.Framework 148 comprises the coupling part 148a that is essentially rectangular plate shape and the fixedly sidepiece 148b that is formed by the sweep of coupling part 148a, the outstanding sidepiece of guide spiro rod 140 and the bearing at end 143 of support guide screw rod 140 are linked to each other, fixedly be formed with clamping screw hole 149 among the sidepiece 148b, the clamping screw that is used for installation chassis 101 is inserted in clamping screw hole 149.
As shown in Figure 25, utilize clamping screw the travel mechanism 104 of picking up with said structure is mounted the suitable position that the framework 148 that guide spiro rod 140 and feeding motor 141 are installed on it is fixed on chassis 101.
Make framework 148 be fixed on picking up in the travel mechanism 104 on the chassis 101 therein, as shown in Figure 29, when chassis 101 was between cap member 90 (below will describe in detail) that covers optical pickup units 6 from the top and the base plate 91 that covers optical pickup units 6 from the top, the opening 142 that is formed on the both sides up and down of motor shell 145 was sealed by cap member 90 and base plate 91.Like this, cap member 90 and base plate 91 are as the yoke that can seal coil 146 magnetic fields that are contained in the motor shell 145.Like this, the fringe magnetic field that can prevent to come from feeding motor 141 exerts an adverse impact and prevents and enter the motor shell 145 such as foreign matters such as dusts for write and read information signal from CD 4.It should be noted that the opening 142 in motor shell 145 can be by cap member 90 and base plate 91 complete closed and owing to the dimensional tolerence of each parts makes some gaps that may form between cap member 90 and the base plate 91 also allow.
In addition, the motor shell 145 that is used for feeding motor 141 descends both-side opening in picking up travel mechanism 104 thereon, and the heat that produces in the motor shell 145 dissipates easily.Particularly, in picking up travel mechanism 104, when picking up pedestal 114 when stationary state moves, friction factor is important, therefore needs big moment of torsion.But in case after picking up pedestal 114 and moving, friction factor reduces and moment of torsion correspondingly reduces.Then, the pedestal 114 that picks up in picking up travel mechanism 104 is provided with enough moments of torsion to prevent that picking up pedestal 114 produces any displacement (even twisting moment).In the operating process of recorder/player 1, even twisting moment always is applied in and feeding motor 141 always is provided electric current.Therefore, the motor shell 145 that is used for feeding motor 141 is designed to descend the unlimited form in both sides overheated to prevent feeding motor 141 thereon, is subjected to from the harmful effect that heat brought of feeding motor 141 dissipations thereby prevent to move the operation of picking up pedestal 114.
In addition, pick up in the travel mechanism 104, descend both sides to open wide thereon owing to be used for the motor shell 145 of feeding motor 141, so it is made thinner than chassis 101 above-mentioned.Like this, owing to limited the thickness that the chassis 101 of picking up travel mechanism 104 is installed on it, so recorder/player 1 can be designed to be thinner.
As shown in Figure 26 to 28, utilize clamping screw make be formed on guide spiro rod 140 on the joint element 120 that engages of screw thread 144 be fixed at one end place and pick up on the pedestal 114 and to change linearity into the rotation with guide spiro rod 140 in its other end place is bonded on screw thread 144 on the guide spiro rod 140 mobile.
The compartment 153 that is formed with copulational protuberance 151 on it is recesses that the cross section is essentially C shape and open-top.In compartment 153, copulational protuberance 155 and 156 is respectively formed on the sidewall 153b of the sidewall 153a of guide spiro rod 140 and leading axle 105. Copulational protuberance 155 and 156 can prevent that the gap from limiting element 152 and breaking away from compartment 153.To limit element 152 to the gap below is described in detail.
Connect on the coboundary of sidewall 153b that surface 157 is formed on leading axle 105 so that joint element 120 with pick up pedestal 114 and link to each other.Connecting surface 157 is being arranged at guide spiro rod 140 and is picking up to extend on the leading axle 105 between the pedestal 114 and pick up above the pedestal 114 and utilize clamping screw to make it be connected to the upside that picks up pedestal 114.
Being contained in the compartment 153 gap with supporting side walls 153a and 153b, to limit element 152 be to be made by the sheet metal that is essentially C shape of rigidity.As shown in Figure 27, the gap limits slit 158a and the 159a that element 152 has the close center that is respectively formed at supporting walls 158 and 159.Slit 158a and 159a be vertical the extension from the upper end.Because the copulational protuberance 155 and 156 that is arranged on sidewall 153a and the 153b is kept by slit 158a and 159a respectively, can prevent that therefore the gap from limiting element 152 and breaking away from compartment 153.
As shown in Figure 28, when the gap limits element 152 and is accommodated in the compartment 153, limit the gap that has between the supporting walls 158 and 159 of element 152 less than the depth of engagement between the screw thread on copulational protuberance 151 and the guide spiro rod 140 (for example the degree of depth is 0.1 millimeter) in the sidewall 153a of compartment 153 and 153b and gap.Therefore, the sidewall 153a of compartment 153 is not being pressed under the situation of guide spiro rod 140, making the gap limit element 152 and be received.In addition, because to limit element 152 are rigidity in the gap as mentioned above, though in the moving process that picks up pedestal 114 because the dimensional tolerence of joint element 120 makes the mismatch error that may exist between copulational protuberance 151 and the screw thread 144 can be limited in the gap (0.1 millimeter) between the supporting walls 158 of the sidewall 153a of compartment 153 and gap qualification element 152.Like this, joint element 120 prevents that the mismatch error of copulational protuberance 151 is greater than the degree of depth (0.3 millimeter) of screw thread 144 and prevent guide spiro rod 140 and copulational protuberance 151 is thrown off mutually in the moving process that picks up pedestal 114.
In addition, in recorder/player involved in the present invention 1, joint element and be accommodated in gap in the compartment of joint element and limit the form that element can be as described below and form.As shown in Figure 30, the joint element of representing with Reference numeral 220 comprises: compartment 222, the outside of compartment 222 is formed with copulational protuberance 221a and the 221b in the screw thread 144 of pair of engaging on guide spiro rod 140, accommodate in the compartment 222 can make copulational protuberance 221a and 221b be in guide spiro rod 140 on screw thread 144 keep the gap at position engaged places to limit element 223; And connect surface 225, utilize clamping screw to make to connect surface 225 to be fixed on the part of picking up pedestal 114 so that compartment with pick up pedestal 114 and link to each other.
In addition, compartment 222 has the compartment 228 and 229 that development length is shorter than second sidewall 227, and second sidewall 227 is formed with thin cardinal extremity, therefore is formed with to make the hinge 233 of second sidewall 227 towards and away from guide spiro rod 140 deflections.Therefore, second sidewall 227 will be towards compartment 222 inner deflections, even thereby owing to the dimensional tolerence of joint element 220, pick up pedestal 114 vibration in moving process etc. and copulational protuberance 221a and 221b be crushed on the screw thread 144 of guide spiro rod 140 also can on guide spiro rod 140, not apply excessive load.Therefore, can guarantee guide spiro rod 140 smooth rotation and pick up pedestal 114 fast moving.
In addition, be formed with the opening 235 that is essentially rectangle on the bottom of compartment 222.Like this, because second sidewall 227 has respectively the side 227a that extends along guide spiro rod 140 that supported by a pair of hinge 233a and 233b and the cardinal extremity of 227b, therefore guarantee at the copulational protuberance 221a of an edge 227a with in the copulational protuberance 221b of another edge 227b can be bonded on screw thread 144 on the guide spiro rod 140 independently.
On the other hand, copulational protuberance therein only by in the joint element of a hinge support, guarantees that paired copulational protuberance 221a and 221b can be bonded on the guide spiro rod 140 together to 221a and 221b.Therefore, if the dimensional tolerence of joint element 220 or pick up the vibration of pedestal 114 in moving process and make to exist between the gradient of gradient and one of copulational protuberance 221a and 221b of the screw thread on the guide spiro rod and conflict or a copulational protuberance is bonded in the screw thread forcefully, another copulational protuberance can not be bonded in the screw thread or can be bonded on the degree of depth that still reaches in the screw thread very little.
In the copulational protuberance 220 that is used for the present invention, the edge 227a of second sidewall 227 and 227b are supported by hinge 233a and 233b respectively at its cardinal extremity place, and paired copulational protuberance 221a and 221b are bonded in the screw thread 144 on the guide spiro rod 140 independently.Therefore, even any one among copulational protuberance 221a and the 221b compatibly is not bonded in the screw thread 144, another copulational protuberance 221a or 221b are bound to be engaged with in the screw thread 144 and can not be subjected to the influence of the bad joint of a copulational protuberance.
The gap qualification element 223 that is contained in the compartment 222 is sheet metals that are essentially C shape of rigidity.The gap limits on the element 223 and is formed with paired first and second supporting walls 237 and 238, and each supporting walls has enough big size being received in the compartment 222, and supports second sidewall 227 when they are accommodated in the compartment 222.First and second supporting walls 237 and 238 have vertical slits 237a and the 238a that is formed on the center basically respectively, and the position of vertical slits 237a and 238a is corresponding to the maintenance projection 231 and 232 on first and second sidewalls 226 and 227 that are respectively formed on the compartment 222.When gap qualification element 223 was accommodated in the compartment 222, the maintenance projection 231 and 232 that is respectively formed on first and second sidewalls 226 and 227 was kept by slit 237a and 238a, thereby prevents that their break away from compartment 222.
Be contained in the compartment 222 for the gap being limited element 223, the horizontal length that is arranged on first supporting walls 237 that picks up pedestal 114 1 sides is shorter than from the interval between the outstanding compartment 228 and 229 of the first side wall 226.On the other hand, be arranged on second supporting walls 238 of guide spiro rod 140 1 sides and be formed with the right side and the left support member 240 that extends beyond the first side wall 237 towards the side of compartment 222, and the length of second supporting walls 238 is substantially equal to or greater than the horizontal length of second sidewall 227.
When the gap being limited element 223 and is contained in the compartment 222, first and second sidewalls 226 of compartment 222 and 227 and the gap limit and have the gap that is shorter than the depth of engagement (as shown in Figure 28, the degree of depth for example is 0.1 millimeter) in the screw thread 144 that copulational protuberance 221 is bonded on guide spiro rod 140 between first and second supporting walls 237 and 238 of element 223.Therefore, the gap limits element 223 and is accommodated in the compartment 222, and second sidewall 227 of compartment 222 can not pressed to guide spiro rod 140.In addition, because as mentioned above, it is rigidity that the gap limits element 223, though in the moving process that picks up pedestal 114 because the dimensional tolerence of joint element 220 makes the mismatch error that may exist between copulational protuberance 221 and the screw thread 144 can be limited in the gap (0.1 millimeter) between the supporting walls 238 of second sidewall 227 of compartment 222 and gap qualification element 223.Like this, joint element 220 prevents that the mismatch error of copulational protuberance 221 is greater than the degree of depth (0.3 millimeter) of screw thread 144 and prevent guide spiro rod 140 and copulational protuberance 221 is thrown off mutually in the moving process that picks up pedestal 114.
In addition, when the gap being limited element 223 and be contained in the compartment 222, as shown in Figure 31 and Figure 32, the support member 240 that is formed on second sidewall 238 can be at second sidewall 227 of whole horizontal width upper support compartment 222.If in the moving process that picks up pedestal 114 or the recorder/player 1 that comprises joint element 220 owing to error is dropped, the gap limits element 223 can alleviate the load that concentrates on the hinge 233 that supports second sidewall 227 by copulational protuberance 221a and the 221b that is bonded in the screw thread 144 on the guide spiro rod 140.
Particularly, joint element 220 have the hinge 233 that forms by the cardinal extremity thickness that reduces second sidewall 227 so that second sidewall 227 towards and away from guide spiro rod 140 deflections.If recorder/player 1 drops owing to error and picks up pedestal 114 and slide fast on leading axle 105 and 106, being installed in the joint element 220 that picks up on the pedestal 114 will slide on guide spiro rod 140 fast.In this case, the fall impacting that picks up pedestal 114 will concentrate on the hinge 233 that supports second sidewall 227 which is provided with copulational protuberance 221a and 221b 221a and 221b by the copulational protuberance that is bonded in the screw thread 144 on the guide spiro rod 140.Make second sidewall 227, the particularly right side of second sidewall 227 and left hand edge 227a and 227b distortion on I that fall impacting will be in Figure 32 or the direction of J, depart from suitable skew direction slightly.Being in the edge 227a of second sidewall 227 of distortion form and the deflection of 227b will produce excessive load on hinge 233, hinge 233 may rupture.
But in recorder/player involved in the present invention 1, second supporting walls 238 of gap qualification element 223 is provided with and is used to support the edge 227a of second sidewall 227 and the support member 240 of 227b.Therefore, even when recorder/player 1 drops load in Figure 32 arrow I or the direction of J be applied on the edge 227a and 227b of second sidewall 227, the support member 240 that the gap limits element 223 will support second sidewall 227, thereby alleviate the load that is applied on the hinge 223, therefore can prevent hinge 223 fractures.
In addition, similar with above-mentioned gap qualification element 223 as shown in Figure 33, can bend towards second sidewall 227 by the free end of support member and form gaps qualification elements.Similar with above-mentioned gap qualification element 223, the gap qualification element of representing with Reference numeral 250 has the cross section that is essentially C shape, and is formed with paired first and second supporting walls 251 and 252 that are used to support first and second sidewalls that are formed on the compartment 222 on it.First and second supporting walls 251 and 252 have slit 251a and the 252a that is formed on the center basically respectively, and the position of slit 251a and 252a is corresponding to the copulational protuberance 231 and 232 on first and second sidewalls 226 and 227 that are respectively formed on the compartment 222. Slit 251a and 252a be vertical the extension from the upper end.
In addition, in the gap limited element 250, the horizontal length of first supporting walls 251 was shorter than from the interval between the outstanding compartment 228 and 229 of the first side wall 226.On the other hand, be formed with the right side and the left support member 253 that extend beyond first supporting walls 251 towards compartment 222 on second supporting walls 252, and the length of second supporting walls 252 is substantially equal to or for the horizontal length of second sidewall 227.
Right and left end is formed with folded part 254 towards 227 bendings of second sidewall to these support members 253 at it.When the gap being limited element 250 and be contained in the compartment 222, folded part 254 extends towards second sidewall 227, and as shown in Figure 34 and 35 the opposite end 227a and the 227b of second sidewall 227 is remained between them.
Similar with above-mentioned gap qualification element 223, above-mentioned gap limits element 250 as following mode is worked.Here hypothesis, recorder/player 1 picks up pedestal 114 slip fast on leading axle 105 and 106 because error is dropped, and departs from suitable skew direction and the arrow K in Figure 35 or the direction of L slightly and apply fall impacting.In this case, the right-hand member 227a of second sidewall 227 of joint element 220 and left end 227b support supported 253.In addition, even pick up that pedestal 114 slides fast and along pick up that pedestal slides as the direction of the arrow M among Figure 35 or the direction imposed load opposite with arrow M, the folded part 254 that the edge 227a of second sidewall 227 and 227b also will be formed on the free end of support member 253 supports.Therefore, supporting the hinge 233a of the edge 227a of second sidewall 227 and 227b and the load on the 233b is alleviated and is prevented joint element 220 fractures.
What note is that similar with above-mentioned gap qualification element 152, above-mentioned gap limits element 250 as following mode is worked.Promptly, when the gap being limited element 250 and is contained in the compartment 222, between second sidewall 227 of second supporting walls 252 and joint element 220, has gap less than the depth of engagement between the screw thread 144 of copulational protuberance 221 and guide spiro rod 140 (as shown in Figure 28, the degree of depth for example is 0.1 millimeter).Therefore, limit in the element 250 in the gap, second sidewall 227 of joint element 220 is received and second sidewall 227 of joint element 220 can not be pressed to guide spiro rod 140.In addition, because as mentioned above, it is rigidity that the gap limits element 250, though in the moving process that picks up pedestal 114 because the dimensional tolerence of joint element 220 makes the mismatch error that may exist between copulational protuberance 221 and the screw thread 144 can be limited in the gap (0.1 millimeter) between second supporting walls 252 of second sidewall 227 and gap qualification element 250.Like this, joint element 220 prevents that the mismatch error of copulational protuberance 221 is greater than the degree of depth (0.3 millimeter) of screw thread 144 and prevent guide spiro rod 140 and copulational protuberance 221 is thrown off mutually in the moving process that picks up pedestal 114.
What note is, can be if which is provided with second sidewall of copulational protuberance 221 towards moving with the direction of leaving guide spiro rod 140, and the hinge 233 that is arranged on the joint element 220 can be in any position except that the cardinal extremity of second sidewall 227 on the compartment 222.In addition, prevent that the gap from limiting that maintenance projection 231 (232) that element 223 (250) and compartment 222 throw off can be arranged on that the gap limits that element 223 (250) is gone up and slit can be formed in the inside surface of first and second sidewalls 226 and 227 and limits element to block the gap.
As shown in Figure 21, chassis 101 links to each other with printed-wiring board (PWB) 161, is formed with driving circuit on the printed-wiring board (PWB) 161.Printed-wiring board (PWB) 161 comprises the so-called rigid circuit substrate that is formed with circuitous pattern on it, and each electronic unit also is installed on the circuitous pattern, such as be installed in the Lower Half 9 that is arranged at equipment body 7 on printed-wiring board (PWB) 17 on the connector 162 that is connected of FPC (flexible print wiring) 23.
As shown in Figure 15 and 29, utilize clamping screw to utilize clamping screw to be fixed on the disc holder 5 upside and the base plate 91 that cap member 90 is fixed on chassis 101 at its downside, above-mentioned optical pickup units 6 is fastened between cap member 90 and the base plate 91.
Be formed with opening 166 in the cap member 90, the object lens 108 and the dish platform 18 that are arranged on the optical pickup units 103 upwards expose by opening 166.Opening 166 comprise corresponding to the inside circumference from CD 4 extend to the neighboring the moving range of picking up pedestal 114 rectangular aperture 166a and be circular opening 166b corresponding to dish platform 18 shapes basic, the inner periphery end of circular open 166b and rectangular aperture 166a is adjacent.In addition, be formed with bearing part 167 on the cap member 90, bearing part 167 is against the top of picking up the motor shell that is used for feeding motor 141 145 on the pedestal 114 that is formed on the chassis 101.
Utilize screw 135 cap member 90 to be fixed on the upside on chassis 101, pick up chassis 18 on the pedestal 114 and object lens 108 by opening 166 guiding above.In addition, when the motor shell 145 that is used for feeding motor 141 during against the rear side of bearing part 167, cap member 90 is enclosed in the opening 142 in the upside of motor shell 145, thereby sealing is contained in the magnetic field of the coil 146 in the motor shell 145.
When chassis 101 was accommodated in the compartment 21 that is used for disc holder 5, cap member 90 was directly faced CD 4 by the opening 16 in the disc holder 5 as shown in Figure 36.That is, cap member 90 forms the part of recess 15.Owing to utilize screw that cap member 90 is fixed on the chassis 101, so it closely is connected with chassis 101.Like this, stop it to rise, and prevent the signal recording surface of the end scraping CD 4 of the first type surface of cap member 90 and opening 166 from recess 15.
Form above-mentioned cap member 90 by the punching press aluminium sheet.Be provided with and pick up the flexibility printed circuit board 119 that pedestal 114 links to each other at the downside of cap member 90.Therefore, consider to prevent to produce any burr that may damage flexibility printed circuit board 119, by along preparing cap member 90 towards the direction punching press aluminium sheet of upside from downside.Then, make cap member 90 remove burr along the edge of opening 166 with along its periphery.
Also form base plate 91 by the punching press aluminium sheet.Be formed with screw hole in the base plate 91, and the downside on the chassis 101 from the compartment 21 that is contained in disc holder 5 utilizes screw that base plate 91 is fixed on the compartment 21.Like this, base plate 91 itself links to each other with chassis 101 and chassis 101 is fastened between base plate 91 and the cap member 90.
Be used for holding the disc holder 5 that the circular open 166 by cap member 90 is directed to and faces, the recess 15 that picks up pedestal 114 and dish platform 18 is configured as circular.As shown in Figure 36, recess 15 is that first to fourth wall 170 to 173 by circle limits.
The side that first wall 170 is formed on the front end 5a of disc holder 5 is formed on opening 16 in the recess 15 with extend through.First wall 170 has the constant clearance C that is limited between the cap member 90 that exposes in the face of the lower limb of the wall body 170a of recess 15 with by the opening in the recess 15 16.In this clearance C, be provided with the projection 175 of the lower limb of slave unit main body 7 towards recess 15 extensions.
Therefore, when recorder/player 1 work and disc holder 5, chassis 101 and cap member 90 had higher temperature, these parts were because the different degree that make that their twist of thermal linear expansion coefficient each other are different each other.Particularly, aluminum cap member 90 has the wall 166a towards the rectangular aperture 166 of CD 4 deflections.The wall 166a of deflection may with the signal recording surface sliding contact that receives the CD 4 in the recess 15.First wall 170 has the projection 175 on the lower limb that is formed on wall body 170a, and cap member 90 is against projection 175 like this, thereby can prevent that cap member 90 is towards CD 4 deflections.
What note is that the screw 135 that cap member 90 can be fixed on the chassis 101 is to be made by the lower liquid crystal polymer of percentage.Therefore, screw 135 restriction chassis 101 and cap member 90 heat distortions.
Be essentially circular second to wall 171 to 173 from recess 15 outstanding formation.
To be described being used to make the disc holder 5 of holding optical pickup units 6 and the printed-wiring board (PWB) 17 interconnective FPC23 that are arranged on the Lower Half 9 below.As shown in Figure 37, FPC23 is essentially U-shaped, and comprises linear, adjacent and first and second arms 180 that are parallel to each other and 181 and be used to make first and second arms 180 and 181 interconnective coupling parts 182.
In addition, second arm 181 182 positions of setting is backward having the coating 188 that can improve second arm, 181 rigidity from end 181a towards the coupling part.That is, second arm 181 from the coupling part 186 towards the coupling part rigidity of 182 positions of setting backward greater than the part that comprises coupling part 186.Coating 188 is attached to the middle place of second arm 181, thereby compares with other parts of 182 with comprising coupling part 186, improves the rigidity of the part of second arm 181 of having coating 188 on it.
Above-mentioned second arm 181 is not fixed on the bottom of Lower Half 9, but shown in Figure 38 A and Figure 38 B, when disc holder 5 moved, second arm 181 was in coupling part 182 moves to equipment body 7 and outside the equipment body 7.In addition, when shown in Figure 39 A and Figure 39 B, when disc holder 5 moved, the sweep 187 of second arm 181 moved along the moving direction of disc holder 5.
Here it should be noted, on the bottom that is not fixed on Lower Half 9 in second arm 181 and the length of the part of pliability distortion be that half and its of the displacement of disc holder 5 is in the midpoint of the moving range of disc holder 5 basically with respect to the border of coupling part 182 basically.In other words, second arm 181 has required minimum length or bigger length for disc holder 5 mobile.When disc holder 5 moved, second arm 181 moved to outside the Lower Half 9 from its border with respect to the coupling part on the bottom that is fixed on Lower Half 9 182, and therefore crooked following in the slave unit main body 7 pulled out at its cardinal extremity 181b place.In addition, when second arm 181 moves in the Lower Half 9, second arm 181 is accommodated in the equipment body 7 by the end 181a bending that is formed with coupling part 186 thereon.
Particularly, in the time of outside disc holder 5 is ejected into equipment body 7, as shown in Figure 39 A, second arm 181 makes its end 181a be ejected into outside the equipment body 7 and sweep 187 is formed near the coupling part 182.Then, when disc holder 5 moves in the equipment body 7 and second arm 181 when also moving in the equipment body 7, as shown in Figure 39 B, sweep 187 is shifted to end 181a.Then, when disc holder 5 is accommodated in the equipment body 7 fully, as shown in Figure 39 C, second arm 181 will make sweep 187 be formed near the coupling part 186.
As mentioned above, in second arm 181, it moves after slightly towards coupling part 182 and to have the part of coating 188 it on low near the ratio of rigidity of the part of coupling part 186 for it.Like this, even as shown in Figure 28 B and Figure 39 C, near the sweep 187 of second arm 181 is formed on coupling part 186 and disc holder 5 when being accommodated in the equipment body 7, can make the load that is applied on second arm 181 because bending is lowered.Like this, second arm 181 can prevent to be formed on the circuitous pattern on the FPC23 owing to the crack occurs and destroyed among the 181a of end.
In addition, because second arm 181 because of sweep 187 is formed near the load that reduce to apply the coupling part 186 thereon, therefore need not to increase distance between coupling part 186 and the sweep 187 in order to reduce to be applied to load on second arm 181 because of sweep when being contained in disc holder 5 in the equipment body 7.Like this, second arm 181 needn't have long length, and this can reduce manufacturing cost.
In addition, the thickness of the equipment body 7 of recorder/player 1 must be restricted, and this is because the main process equipment of many application is designed to be thinner.When the height in the space that FPC23 is set must be limited, sweep 187 should have bigger curvature, and the load on sweep 187 will be bigger like this.But when disc holder 5 was accommodated in the equipment body 7, because second arm 181 can reduce to be applied to the load on the sweep 187, so the present invention can satisfy the thin designing requirement of equipment body 7.
What note is that FPC23 has the coating 188 that is attached to its second arm, 181 pars intermedia offices, so when disc holder 5 is accommodated in the equipment body 7, FPC23 will can not be stuck between the rear end 5d of equipment body 7 and disc holder 5.Particularly, as shown in Figure 39 A, when disc holder 5 is in equipment body 7 outsides, between disc holder 6 and equipment body 7, has gap 190.Therefore, when being contained in disc holder 5 in the equipment body 7, when the second flexible arm 181 therebetween part locate downwards to the gap during 190 belows, it is located will be stuck in it between the rear end of disc holder 5 5d and equipment body 7 in the middle of.
Here it should be noted that in FPC23, the coating 188 that is arranged on the pars intermedia office of second arm 181 makes the rigidity in the pars intermedia office of second arm 181 roughly be higher than the rigidity of rear end part 181b.Therefore, when being accommodated in the equipment body 7 once more after outside disc holder 5 one is ejected out to equipment body 7, the center section that can prevent second arm 181 that rigidity is higher deflects into 190 belows, gap, and rigidity is lower and rear end part 181b bending flexible bigger second arm 181 moves in the equipment body 7 to guarantee disc holder 5.
To the circuit arrangement of recorder/player 1 with said structure be described below.
Recorder/player 1 involved in the present invention is write data on the CD 4 by light beam being projected CD 4, comes from the data of reflection ray reading and recording on CD 4 of CD 4 by detection.As shown in Figure 40, recorder/player 1 comprises the Spindle Motor 201 that CD 4 is rotated, the motor control circuit 202 that is used to control Spindle Motor 201, detects the optical take-up apparatus 103 from the reflection ray of CD 4, the RF amplifier 203 that amplifies the electric signal output that comes from optical take-up apparatus 103, the servo circuit 204 that is used to object lens 108 generation focus servo signals and tracking servo signal and the subcode extraction circuit 205 that extracts subcode by light beam being projected the CD 4 that utilizes Spindle Motor 201 to rotate.In addition, recorder/player 1 also comprises register system, and described register system comprises: link to each other with main process equipment 2 such as PC etc. with the input terminal 206 of receiving record data, can be to the record data error correction supplied with at input terminal 206 places and the error correction/coding circuit 207 of coding; Be used to modulate the error correction that comes from circuit 207 and the modulation circuit 208 of coded data; And the writing circuit 209 that is used to write down the record data of modulation.In addition, recorder/player 1 comprises playback system, and described playback system comprises: be used for the demodulator circuit 210 to the reading of data demodulation that comes from CD 4; The demodulation reading of data is carried out the error correction/decoding circuit 211 of error correction/decoding; And the lead-out terminal 212 that is used to provide error correction and decoded data.Recorder/player 1 also is included as the control circuit 215 of the user control unit 213 of equipment input instruction signal, the storer 214 of storing each control data etc. and control system operation.
Above-mentioned Spindle Motor 201 is provided with the dish platform 102 that CD 4 can be placed on it on its main shaft, and it rotates the CD on dish platform 102.Motor control circuit 202 control Spindle Motors 201 make CD 4 rotate with CLV (constant linear velocity).Particularly, motor control circuit 202 makes CD 4 rotate with CLV based on reference clock that comes from crystal oscillator and the clock control Spindle Motor 201 that comes from the PLL circuit.Certainly, CD 4 can CAV (Constant Angular Velocity) or the combination of CLV and CAV rotate.
Above-mentioned optical take-up apparatus 103 comprises: but emission wavelength is corresponding to the semiconductor laser of the light beam that is arranged on CD 4 types in the recorder/player 1; The object lens 108 that have corresponding to the numerical aperture of CD 4 types and the light beam that sends from semiconductor laser is focused on; Be used to detect the photodetector of the reflection ray that comes from CD 4 etc.When the data of reading and recording in CD 4, optical take-up apparatus 103 is set in standard level and control semiconductor laser emission light beam with the output of semiconductor laser.In addition, when record data being written in the CD 4, optical take-up apparatus 103 is set in recording level and the control semiconductor laser emission light beam that is higher than the standard level that is used for reading of data with the output of semiconductor laser.Write and read for data, optical take-up apparatus 103 reaches light beam projection on the CD 4, utilizes photodetector to detect the reflection ray of the signal recording surface that comes from CD 4 and carries out light-to-current inversion for detecting light.In addition, the object lens driving mechanism of utilization such as dual-axis actuator etc. supports object lens 108, and utilizes driving mechanism that object lens 108 moved along the focus direction of parallel its optical axial and based on tracking servo signal along the tracking direction of vertical its optical axial based on focus servo signal.
Above-mentioned RF amplifier 203 produces the RF signal, and based on focusing on and tracking error signal from the electric signal output that is included in the photodetector in the optical take-up apparatus 103.For example, utilize astigmatism method to produce focus error signal, and utilize three beams method or push-pull method to produce tracking error signal.When being in reproduction mode, RF amplifier 203 focuses on and tracking error signal for servo circuit 204 provides simultaneously for demodulator circuit 210 provides the RF signal.
Above-mentioned servo circuit 204 produces and is used for the servosignal that CD 4 reproduces.Particularly, servo circuit 204 produces focus servo signal based on the focus error signal that is provided by RF amplifier 203, utilizes focus servo signal to make the focus error signal vanishing; And, utilize tracking servo signal to make the tracking error signal vanishing based on the tracking error signal generation tracking servo signal that provides by RF amplifier 203.Then, servo circuit 204 provides focusing and tracking servo signal for the driving circuit that is included in the object lens driving mechanism in the optical take-up apparatus 103.Driving circuit drives dual-axis actuator based on focus servo signal so that object lens 108 move along the focus direction of the optical axial of parallel object lens 108, and drives dual-axis actuator so that object lens 108 move along the tracking direction of the optical axial of vertical object lens 108 based on tracking servo signal.
Above-mentioned subcode extraction circuit 205 extracts sub-code data and the sub-code data that extracts is offered control circuit 215 from the RF signal output that comes from RF amplifier 203, so control circuit 215 can the identification address data etc.
The interface such as SCSI (small computer system interface), ATAPI (Advanced Technology Attachment packet interface), USB (universal serial bus structural), IEEE (electronics and The Institution of Electrical Engineers) 1394 etc. of input terminal 206 and main process equipment 2 (such as PC etc.) be electrically connected with reception come from main process equipment 2 voice data, cinematic data, computer program, computer processing data etc. record data and the record data of supplying with are offered error correction/coding circuit 207.
Above-mentioned error correction/coding circuit 207 carries out offering modulation circuit 208 such as the error correction/coding of CIRC (intersection interleave Reed-Solomon code) or Reed-Solomon product ciphers and with error correction and encoded recording data.Have 8 to 10 and 88 record data will supplying with to the modulation circuit 208 of 16 conversion tables and be transformed to 14 or 16 bit data, and these data are offered writing circuit 209.Writing circuit 209 carries out offering optical take-up apparatus 103 such as the record compensation of NRZ (non-return to zero system), NRZI (reversing non-return-to-zero) etc. and with the data of handling.
Above-mentioned storer 214 for example is that EP-ROM (EPROM (Erasable Programmable Read Only Memory)) etc. is used for store various kinds of data and program in control circuit 215.Particularly, being stored in data in the storer 214 comprises and is used for feeding motor 141 (step motor) so that the control data that optical take-up apparatus 103 moves radially with respect to the CD 4 that is arranged on the dish platform 102.
What note is, the program zone in the zone that CD 4 has the ingress area that is formed in its inner circumference area, be formed on the ingress area outside and be formed on the export area of program region exterior, that is, and at its outermost circumferential area.In the sub-code data in ingress area, have TOC (contents table) data of storage, such as about the address date that is stored in the data in the program zone with about being stored in the address date of the data in the export area.In addition, feeding motor 141 is supplied to pulse voltage and drives optical take-up apparatus 103 with step-by-step movement.Therefore, storer 214 is stored in starting point (HOME) from ingress area in the scope of the terminal point (OUT) of export area, the number of steps (A) of the write and read that mobile optical take-up apparatus 103 is required, as shown in Figure 41, optical take-up apparatus 103 in this scope from CD 4 reading of data.It should be understood that working as optical take-up apparatus 103 reaches final position (OUT), its is mechanically limited the excircle that moves and can not further move to CD 4.
In addition, the mobile range of optical take-up apparatus 103 is movable to than the more inner position of the ingress area in the CD 4 so that optical take-up apparatus 103 can read the TOC data in the ingress area.Therefore, storer 214 is also stored the required number of steps (B) of starting point (HOME) that is moved to ingress area by optical take-up apparatus 103 from the innermost position (IN) of optical take-up apparatus 103.When optical take-up apparatus 103 reaches its IN position, its is moved and can not further move inward by restriction mechanically.
The mobile range of optical take-up apparatus 103 extends to the terminal point (OUT) of export area from innermost position (IN), and in this scope, optical take-up apparatus 103 can be from CD 4 reading of data, thereby optical take-up apparatus 103 must mechanically be accurately positioned.Therefore, storer 214 has been stored the number of steps (C) of the maximum that is used for step motor or feeding motor 141.Maximum number of steps (C) comprises and being applied to than the more inner zone of innermost circumferential area (IN) so that optical take-up apparatus 103 reaches innermost circumferential area (IN) and is applied to than more outer zone, land (OUT) so that optical take-up apparatus 103 reaches the extra number of steps (D) of land (OUT).In the zone of the extra number of steps (D) that applies some, mechanically limit optical take-up apparatus 103 and move, that is, can not move.Under this irremovable situation, step motor 141 is provided additional pulse voltage so that guide spiro rod rotates.The idle running of guide spiro rod will produce noise.
As shown in Figure 40, control circuit 215 comprises that microcomputer, CPU (central processing unit) etc. are to operate in response to the command signal control system that is provided by user control unit 213.As shown in Figure 41,215 pairs of starting points with ingress area of control circuit (HOME) are taken as " 0 " and carry out position counting for optical take-up apparatus 103.In addition, by At time of eject, control circuit 215 provides the magnetic force of the magnet of electric energy to eliminate magnetic attraction iron core 45 for coil on the core 44 at CD 4, thereby the engaging mechanism 20 of disc holder 5 and the coupling recess 11 of equipment body 7 are thrown off.
Function to recorder/player 1 with said structure is described below.
In recorder/player 1, deflection adjusting mechanism 109 is supported on the opposite two ends of paired leading axle 105 and 106 in advance.Deflection adjusting mechanism 109 is adjusted the gradient of leading axles 105 and 106 so that will vertically be incident on the signal recording surface of CD from the light beam of object lens 108 projections.Utilize cementing agent 133 feasible flexible members 126 sclerosis that are arranged in the housing 125 that is used for deflection adjusting mechanism 109.Like this, even flexible member 126 plastic yield owing to the compression of the screw 127 that is adjusted, deflection adjusting mechanism 109 also can keep the gradient that is fit to of leading axle 105 and 106.
In recorder/player 1, it is outer so that CD 4 is arranged on the disc holder 5 that disc holder 5 is ejected out to equipment body 7.At this moment, as shown in Figure 19, pivotal part 42 is along the direction pressurized of arrow E, therefore makes equipment body 7 contact with stop wall 81 on being arranged on disc holder 5.In addition, junction surface 41 pivots its bearing part 51 along the direction opposite with arrow D under the effect of the range of pivot restriction projection 55 of pivotal part 42, thereby makes the moving track withdrawal of its bonding part 48 from copulational protuberance 11.Therefore, the Lower Half 9 that is provided with the equipment body 7 of copulational protuberance 11 on it is vertically thrown off mutually with disc holder 5, and be subjected to being arranged on the rear wall 9a of the ejection element 30 compressing Lower Halves 9 of disc spring 28 compressings on the disc holder 5, thereby disc holder 5 is ejected into outside the equipment body 7.
When CD 4 is set at suitable position in the recess 15 of disc holder 5 and disc holder 5 when being directed in the equipment body 7 by the user, the direction that is arranged on the arrow H of copulational protuberance 11 in Figure 19 on the Lower Half 9a vertically moves forward the arm 70 until its contact pressuring piece 46, and the direction of arm 70 thereby the arrow G in Figure 20 pivots.When arm 70 pivots, the contact portion 57 of the compressing part 72 compressing pivotal parts 42 of pressuring piece 46 so that pivotal part pivot along the direction opposite with arrow E among Figure 20.The iron core 45 that links to each other with the coupling part 58 of pivotal part 42 inserts it into axle 63 and is inserted on the core in the coil 44 dearly and is set at the magnet magnetic attraction in the coil 44 on the core.
Since be formed with projection 60 on the contact portion 57 that the compressing part 72 of pressuring piece 46 contacts, therefore pressuring piece 46 can be oppressed projection 60 pivotal part 42 is pivoted along the direction opposite with arrow E, thereby makes iron core 45 be built in that the magnet in the coil 44 attracts on the core.In addition.Because but slit 61 is formed between contact portion 57 and the coupling part 58 and contact portion 57 resilient movement, even therefore when 42 oppressed 46 of pivotal parts are excessively oppressed, pivotal part 42 can make contact portion 57 deflections, thereby can absorption pressure.
Like this, acting force that iron core 45 and pivotal part 42 overcome torsion-coil spring 59 is pivoted along the direction opposite with arrow E among Figure 20.When the range of pivot of pivotal part 42 restriction projection 55 when the direction opposite with arrow E pivots, make junction surface 41 direction along arrow D in the scope that increases pivot, thereby as shown in Figure 20, bonding part 48 is on the moving track of copulational protuberance 11.
When disc holder 5 is inserted in the equipment body 7 more deeply, the inclined-plane 49a that the direction of the arrow H of copulational protuberance 11 in Figure 20 moves on the end that makes the main body 49 that is formed on junction surface 41 simultaneously pivots along the direction opposite with arrow D, and copulational protuberance 11 is engaged with on the bonding part 48.Like this, the Lower Half 9 of disc holder 5 and equipment body 7 is bonded with each other.
As shown in Figure 18, ejection element 30 moves from the rear wall 9a back pressure of Lower Half 9 and towards front end 5a and utilizes flange 30a that disc spring 28 is compressed towards front end 5a simultaneously.Kept by the compartment 29a of spring compartment 29 owing to be in the end of front end 5a one side, so disc spring 28 is oppressed and then is compressed to be kept for flange 30a is pressed to the acting force of rear end 5d by flange 30a.That is, disc holder 5 on the junction surface 41 be arranged on Lower Half 9 vertically on copulational protuberance 11 engage simultaneously Lower Half 9 pressed to rear end 5d, and it is in the equipment body 7.
In addition, when disc holder 5 was accommodated in the equipment body 7, the FPC23 that connects the printed-wiring board (PWB) 17 on the optical pickup units 6 be contained in the disc holder 5 and the Lower Half 9 that is arranged on equipment body 7 moved in the equipment body 7 while at the end of second arm 181 181a place deflection and the sweep 187 that is formed on rearward end 181b place and moves towards end 181a.Since FPC23 in the basic pars intermedia office of second arm 181 with coating 188, therefore second arm 181 therebetween the rigidity of part greater than rigidity at rearward end 181b.Therefore, when the disc holder 5 after outside being ejected into equipment body 7 is accommodated in the equipment body 7 once more, prevent second arm 181 below the bigger pars intermedia office of rigidity deflects into gap 190, and the rigidity of second arm 181 is lower and flexible bigger rearward end 181b is crooked and move in the equipment body 7.
In addition, when disc holder 5 is accommodated in the equipment body 7 fully, as shown in Figure 38 B and Figure 39 C, second arm 181 will with coupling part 186 that connector 162 links to each other near crooked (representing) with Reference numeral 187.But, since in second arm 181 near the ratio of rigidity of the part of coupling part 186 its move after slightly towards coupling part 182 and on it part with coating 188 low, therefore can make the load that is applied on second arm 181 owing to sweep reduces.Like this, second arm 181 can prevent to be formed on the circuitous pattern on the FPC23 owing to the crack occurs and destroyed among the 181a of end.
In addition, because second arm 181 because of sweep 187 is formed near the load that reduce to apply the coupling part 186 thereon, therefore need not to increase distance between coupling part 186 and the sweep 187 in order to reduce to be applied to load on second arm 181 because of sweep when being contained in disc holder 5 in the equipment body 7.Like this, second arm 181 needn't have long length, and this can reduce manufacturing cost significantly.
In addition, in the recorder/player 1 of thin formula design, because the height that the space of FPC23 is set is limited in holding the scope of the maximum possible of disc holder 5, so sweep 187 should have bigger curvature, and load will be bigger on sweep 187 like this.But when disc holder 5 was accommodated in the equipment body 7, because second arm 181 can reduce to be applied to the load on the sweep 187, so the present invention can satisfy the thin designing requirement of equipment body 7.
In addition, in recorder/player 1, optical take-up apparatus 103 is normally at the starting point (HOME) of ingress area.Because recorder/player 1 is comprised in the portable set such as notebook computer etc., when this portable set be carried or under similar situation recorder/player 1 may be applied in vibration.When the main process equipment 2 with built-in recorder/player 1 is carried and CD 4 when being set on the disc holder 5, the vibration that may be applied on the main process equipment 2 will make CD 4 be disturbed.The displacement that CD 4 produces owing to being disturbed is bigger at the excircle place.Therefore, in the recorder/player 1 of design according to the present invention, the very little inner periphery place of displacement that optical take-up apparatus 103 is in produce owing to being disturbed in the CD 4, thus the object lens 108 etc. that prevent CD 4 and optical take-up apparatus 103 are in contact with one another and scraping mutually.
As shown in Figure 42, after step S1 is switched on, drive step motor 141 at recorder/player 1 at step S2 control circuit 215.Particularly, control circuit 215 applies the pulse voltage that is equivalent to maximum number of steps (C) on step motor 141.Then, the guide spiro rod 140 that links to each other with step motor 141 rotates and optical take-up apparatus 103 progressively moves to the endpoint location (OUT) that is in CD 4 excircle places.
In recorder/player 1, if optical take-up apparatus 103 is applied in when vibrating owing to jumping when being carried, optical take-up apparatus 103 may move towards the inner periphery or the excircle of CD 4 from the starting point (HOME) of ingress area.If under such a case, step motor 141 is supplied to the quantity that is equivalent to the quantity of the write and read number of steps (A) among Figure 41, optical take-up apparatus 103 are moved to the required number of steps (B) of the starting point (HOME) of ingress area from the innermost circumferential position (IN) of optical take-up apparatus 103 and pulse voltage at the maximum quantity of the resulting number of steps of quantity addition (C) of the extra number of steps (D) of inner periphery and excircle.That is, because optical take-up apparatus 103 was moved beyond endpoint location (OUT) by mechanical constraint after, step motor 141 was driven until guide spiro rod 140 idle running, so the endpoint location of optical take-up apparatus 103 (OUT) can correctly be retrieved.
What note is that when guide spiro rod 140 idle running, it will produce noise.But, only produce noise in the quantity of the required number of steps (B) of the starting point (HOME) that moves to ingress area corresponding to optical take-up apparatus 103 from the innermost circumferential position (IN) of optical take-up apparatus 103 with in the time in the quantity summation of the extra number of steps (D) of inner periphery and excircle.Therefore, can restrain noise makes it less than for example being equivalent to the noise that produced during towards the negative pulse voltage of the number of steps (C) of the maximum quantity of the direction of innermost circumferential position (IN) along from the starting point (HOME) of ingress area when step motor 141 is supplied to.
When correctly discerning the endpoint location (OUT) of optical take-up apparatus 103 in step S2, control circuit 215 provides the negative pulse voltage of the number of steps (C) that is equivalent to maximum quantity for step motor 141 in step S3.Like this, optical take-up apparatus 103 was moved to innermost circumferential position (IN) by mechanical constraint after, step motor 141 was driven until guide spiro rod 140 idle running, so the innermost circumferential position (IN) of optical take-up apparatus 103 can correctly be retrieved.
What note is that when guide spiro rod 140 idle running, it will produce noise.But only the time that produces noise and noise is produced in corresponding to the time in the quantity of the extra number of steps (D) at inner periphery place reaches minimum.
When the innermost circumferential position (IN) of identification optical take-up apparatus 103 in step S3, control circuit 215 is equivalent to optical take-up apparatus 103 moves to the quantity of the required number of steps (B) of the starting point (HOME) of ingress area from the innermost position (IN) of optical take-up apparatus 103 negative pulse voltage for step motor 141 provides in step S4.Like this, control circuit 215 can make optical take-up apparatus 103 move to the starting point (HOME) of ingress area.In addition, control circuit 215 can be made as the starting point (HOME) of ingress area zero, beginning pulse count and begin to manage the position of optical take-up apparatus 103.
The operation that record data will be write on the CD 4 of recorder/player 1 is described below.
When the user pressed record button 213a on the user control unit 213, record data were supplied at input terminal 206 places of recorder/player 1.Record data experience error correction and the coding corresponding to present used CD 4 types in the recorder/player 1 in error correction/coding circuit 207, then experience the modulation corresponding to CD 4 types in modulation circuit 208.Modulating data is recorded in the writing circuit 209, then is fed into optical take-up apparatus 103.Then, light beam that optical take-up apparatus 103 will send from semiconductor laser and that have corresponding to the wavelength of CD 4 types projects on the recording layer of CD 4, detection comes from the reflection ray in the reflection horizon in the CD 4, detected light is carried out light-to-current inversion, and resulting electric signal is offered RF amplifier 203.RF amplifier 203 will produce focus error signal, tracking error signal and RF signal.Servo circuit 204 produces focus servo signal and tracking servo signal based on focus error signal that is provided by RF amplifier 203 and tracking error signal, and servosignal is offered the driving circuit in the object lens driving mechanism that is included in the optical take-up apparatus 103.Like this, the object lens 108 that supported by the object lens driving mechanism move along the focus direction of the optical axial that is parallel to object lens 108 with perpendicular to the tracking direction of the optical axial of object lens 108.In addition, motor control circuit 202 servosignal that rotates, it is synchronous with the reference clock that comes from crystal oscillator utilize to rotate the clock that servosignal makes tilting member by groove and addressing pit produce, and based on rotating servosignal drive shaft motor 201 so that CD 4 rotates with CLV.In addition, subcode extraction circuit 205 extracts wobble groove and extracts address date on ingress area from pit pattern from the RF signal, and the data that extract are offered control circuit 215.In order under the control of control circuit 215, to write on the data of handling in the writing circuit 209, optical take-up apparatus 103 obtains predetermined address based on the address date that extracts, drive semiconductor laser with recording level, and light beam is projected on the recording layer of CD 4 so that data are write on the CD 4.When optical take-up apparatus 103 write record data, utilize step motor to make it progressively to move record data are write on the inner periphery and the zone between the excircle of CD 4.
To the operation of the data of reading and recording on CD 4 of recorder/player 1 be described below.
When the user presses broadcast button 213c on the user control unit 213, light beam that optical take-up apparatus 103 will send from semiconductor laser and that have corresponding to the wavelength of CD 4 types projects on the recording layer of CD 4, detection comes from the reflection ray in the reflection horizon in the CD 4, the light-to-current inversion that detected light is carried out, and resulting electric signal offered RF amplifier 203.RF amplifier 203 will produce focus error signal, tracking error signal and RF signal.Servo circuit 204 produces focus servo signal and tracking servo signal based on focus error signal that is provided by RF amplifier 203 and tracking error signal, and servosignal is offered the driving circuit in the object lens driving mechanism that is included in the optical take-up apparatus 103.In addition, motor control circuit 202 servosignal that rotates, the clock that utilizes the rotation servosignal to make synchronizing signal produce is synchronous with the reference clock that comes from crystal oscillator, and based on rotating servosignal drive shaft motor 201 so that CD 4 rotates with CLV.In addition, subcode extraction circuit 205 extracts sub-code data from the RF signal, and the sub-code data that extracts is offered control circuit 215.For reading of data, optical take-up apparatus 103 obtains predetermined address based on the address date in the sub-code data that is included in extraction, drive semiconductor laser beam with reproduction level, light beam is projected on the recording layer of CD 4 with the record data of reading and recording in CD 4.When optical take-up apparatus 103 when optical disk reading is fetched data, utilize step motor to make it progressively to move with in reading of data on the inner periphery of CD 4 and the zone between the excircle.
At demodulator circuit 210 the RF signal that is produced by RF amplifier 203 is carried out demodulation corresponding to being used for modulating method for recording data, experience error correction and decoding then are transported to lead-out terminal 212 in error correction/decoding circuit 211.Then, export with digital form in lead-out terminal 212 place's data, perhaps for example using D-A (digital-to-analog) converter is simulation from digital conversion, to offer loudspeaker, monitor etc.
When as mentioned above data being write or read CD 4 or writing or during read data from CD 4, be formed on the compartment 153 that picks up the joint element 120 that pedestal 114 links to each other which is provided with object lens 108 in copulational protuberance 151 be bonded in the screw thread 144 on the guide spiro rod 140 and make screw thread 144 reach certain depth, for example the degree of depth is 0.3 millimeter, and the gap of being made by rigid metal plate in compartment 153 limits between the supporting walls 158 and 159 that element 152 is accommodated in compartment 153 and the interval between them is bonded on depth of engagement in the screw thread 144 on the guide spiro rod 140 less than copulational protuberance 151, and for example the gap is 0.1 millimeter.
Therefore, press under the situation of guide spiro rod 140, make the gap limit element 152 and be received at the copulational protuberance 151 that does not have to be formed on the compartment 153.That is, can prevent that guide spiro rod 140 is applied in excessive acting force, thereby can make the rotation of guide spiro rod 140 blunt.Thereby guarantee that guide spiro rod 140 smoothly rotates.In addition, in the moving process that picks up pedestal 114, limit to such an extent that limit gap (0.1 millimeter) between the supporting walls 158 of element 152 less than the sidewall 153a that is limited to compartment 153 and gap owing to the dimensional tolerence of joint element 120 makes the mismatch error that may exist between copulational protuberance 151 and the screw thread 144 to be limited element 52 by the gap.Like this, the mismatch error of joint element 120 restriction copulational protuberances 151 is less than the degree of depth (0.3 millimeter) of screw thread 144 and prevent guide spiro rod 140 and copulational protuberance 151 is thrown off mutually in the moving process that picks up pedestal 114.
In addition, wherein accommodating the gap, to limit the work of joint element 120 of element 220 (250) as follows.If recorder/player 1 drops owing to error and picks up pedestal 114 and slide fast on leading axle 105 and 106, be formed with on it with guide spiro rod 140 on the edge 227a of second sidewall 227 of copulational protuberance 221 of screw thread 144 engagements and 227b limited the support member 240 (253) of element 220 (250) by the gap or locate to support at folded part (254).Therefore, can alleviate load on the hinge 233 that concentrates on support second sidewall 227, thereby prevent hinge 233 fractures.
In addition, be supplied to square wave and make the feeding motor 141 that picks up pedestal 114 feedings be designed to be thinner, at least owing to motor shell 145 opens wide at its top and place, bottom to drive guide spiro rod 140 rotations.In addition, motor shell 145 is supported between the top and cap member on the bottom 90 and base plate 91 that is arranged at optical pickup units 6 respectively.
As mentioned above, the magnetic field that is accommodated in the coil 146 in the motor shell 145 can be closed, thereby can prevent that the fringe magnetic field that comes from feeding motor 1 from producing harmful effect to the information signal that is read or write by CD 4.In addition, open wide at its top and place, bottom, therefore in motor shell 145, discharge heat easily owing to be used for the motor shell 145 of feeding motor 141.
In addition, in recorder/player 1, disc holder 5, chassis 101 and cap member 90 are to be made by the different material of thermal linear expansion coefficient each other, when they had higher temperature, these parts made that owing to thermal linear expansion coefficient each other is different the degree of their distortions is different each other.Particularly, aluminum cap member 90 has the wall 166a towards the rectangular aperture 166 of CD 4 deflections, and the wall 166a of deflection may with the signal recording surface sliding contact that receives the CD 4 in the recess 15.
With reference to Figure 43 the operation of recorder/player 1 when depressing the ejector button 213a that is used to eject CD 4 is described below.
In step S11, control circuit 215 judges whether ejector button 213a is pressed by the user.When judged result when being sure, control circuit 215 carries out step S12.When control circuit 215 has detected, when the user has depressed ejector button 213a, it will provide negative pulse voltage so that optical take-up apparatus 103 moves to the starting point (HOME) of ingress area for step motor 141.
What note is, in order to make optical take-up apparatus 103 move to the starting point (HOME) of ingress area, the negative pulse voltage that is equivalent to maximum quantity number of steps (C) can be applied on the step motor 141 so that optical take-up apparatus 103 moves to its innermost position (IN), then is equivalent to optical take-up apparatus 103 moves to the quantity of the required number of steps (B) of the starting point (HOME) of ingress area from the innermost position (IN) of optical take-up apparatus 103 positive pulse voltage and can be applied on the step motor 141 so that optical take-up apparatus 103 moves to the starting point (HOME) of ingress area.
When optical take-up apparatus 103 moves to the starting point (HOME) of ingress area, control circuit 215 carries out step S13, will for coil on the core 44 provide the magnet of electric current to eliminate magnetic attraction iron core 45 magnetic force so that the copulational protuberance 11 of disc holder 5 and equipment body 7 throw off mutually.Like this, the disc holder 5 that is placed with CD 4 on it is ejected out to outside the equipment body 7 under the effect of the acting force of disc spring 28.
Particularly, in order to eject in the disc holder 5 slave unit main bodys 7, the control circuit 215 that the user control unit 213 on being arranged on disc holder 5 receives command signal provides electric current to be built in the magnetic force of the magnet the coil 44 on the core with elimination.Therefore, the direction of pivotal part 42 arrow E in Figure 19 under the effect of the acting force of torsion-coil spring 59 pivots.Range of pivot restriction projection 55 pivots along the direction of arrow E, thereby junction surface 41 is pivoted along the direction opposite with arrow D, is withdrawn from the moving track of copulational protuberance in bonding part 48.Like this, copulational protuberance 11 is thrown off with bonding part 48, and disc holder 5 is thrown off with the Lower Half 9 of equipment body 7 like this.
At this moment, eject the reacting force that element 30 is applied in the acting force that equals disc spring 28 that comes from rear wall 9a and disc spring 28 is pushed back front end 5a to utilize flange 30a.Because its end in front end 5a one side blocked by the wall 29a of spring compartment 29, so disc spring 28 will be expanded simultaneously compartment 29a will be extruded towards front end 5a.Like this, disc holder 5 is forced out and ejects towards the open end of equipment body 7 in the side of front end 5a towards the open end of equipment body 7.
What note is, because when pivotal part 42 makes the compressing part 72 of pressuring piece 46 conflict with the contact portion 57 of pivotal part 42 and make when oppressing part 72 along the direction pivot opposite with arrow G along the pivot of arrow E direction, therefore arm 70 is kept by backstop 80, can avoid arm 70 excessive pivotals and is not on the moving track of copulational protuberance 11.In addition, be wrapped in the holding element 75 that torsion-coil spring 73 on the pressuring piece 46 can be formed on the rear side 5c of disc holder 5 and be fixed on suitable position, therefore provide best acting force for pressuring piece 46.Therefore, even be engaged projection 11 compressing and pivotal part 42 along the direction of arrow G or when the direction opposite with arrow G pivots when pressuring piece 46, pressuring piece 46 turns back to the initial position that the moving track of arm 70 and copulational protuberance 11 intersects.
What note here is, when CD 4 by At time of eject, vibration can make it be disturbed.The displacement that CD 4 produces owing to being disturbed is bigger at the excircle place.Therefore, in the recorder/player 1 of design according to the present invention, the very little inner periphery place of displacement that optical take-up apparatus 103 is in produce owing to being disturbed in the CD 4, thus object lens 108 that prevent CD 4 and optical take-up apparatus 103 etc. are in contact with one another with mutual scraping.
In foregoing, in conjunction with some preferred embodiments the present invention is described in detail with reference to accompanying drawing.But, it should be understood that to those skilled in the art, the invention is not restricted to these embodiment and can on the basis that does not break away from protection domain defined by the appended claims, improve and modification them.For example, the present invention can be used for the recorder/player that can be used in combination with the CD such as CD (compact disc), CD-ROM, CD-R/RW, DVD-ROM or DVD-RAM.
In addition, the main process equipment that recorder/player involved in the present invention can be installed is such as portable recorder/player of notebook computer and PDA (personal digital assistant), such as the fixed recorder/player of desktop computer and server, vehicle-mounted recording device/player etc.
Be also to be noted that the related size about recorder/player of the present invention is only to be exemplary here, the present invention can utilize other any suitable sizes to make.
Claims (6)
1. one kind is write down and/or reproducer, comprising:
Wherein be provided with the optical pickup units of object lens;
Make the travel mechanism of picking up that optical pickup units moves; And
Make picking up pedestal and picking up the joint element that travel mechanism is bonded with each other of optical pickup units,
Described joint element comprises:
Be bonded on the copulational protuberance in the screw thread that is formed on the guide spiro rod; And
Be arranged on and pick up near the pedestal holding the compartment that the gap limits element, described gap limits element and copulational protuberance is remained on can guarantee to be bonded on distance on the guide spiro rod,
The gap that is received limits the depth of engagement of the gap at element and compartment interval less than copulational protuberance and the screw thread on guide spiro rod.
2. equipment as claimed in claim 1 is characterized in that, the described travel mechanism of picking up comprises and driving so that the step motor that guide spiro rod rotates.
3. one kind is write down and/or reproducer, comprising:
Comprise the optical pickup units that picks up pedestal;
The travel mechanism of picking up that comprises guide spiro rod, it can make and pick up pedestal and move; And
Joint element, described joint element comprises:
Be fixed on the sidewall that picks up on the pedestal, and be formed with the copulational protuberance that is bonded on the guide spiro rod in its outside;
Wherein accommodate the compartment of gap qualification element, keep a distance between the inside surface of the supporting walls (158,159) of described gap qualification element (152) and the sidewall (153a, 153b) of compartment (153), this distance can be guaranteed the joint between copulational protuberance and the guide spiro rod; And
Be arranged on the hinge on the cardinal extremity of sidewall, described hinge is shifted to guide spiro rod or left on the direction of guide spiro rod at sidewall is flexible,
The gap limits element and comprises the outside support member that extends along inside surface of side wall towards compartment.
4. equipment as claimed in claim 3 is characterized in that described support member bends towards the sidewall outside.
5. equipment as claimed in claim 3 is characterized in that, the gap that the gap that is received limits element and compartment interval is bonded on the degree of depth in the screw thread on the guide spiro rod less than copulational protuberance.
6. equipment as claimed in claim 3 is characterized in that, described compartment has the opening that is formed on its bottom.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP025239/2003 | 2003-01-31 | ||
| JP2003025239A JP3873895B2 (en) | 2003-01-31 | 2003-01-31 | Recording and / or reproducing device, optical pickup unit |
| JP415741/2003 | 2003-12-12 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100025274A Division CN1328727C (en) | 2003-01-31 | 2004-01-30 | Recording and/or playback device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1909080A CN1909080A (en) | 2007-02-07 |
| CN100452188C true CN100452188C (en) | 2009-01-14 |
Family
ID=32953566
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101150196A Expired - Fee Related CN100489970C (en) | 2003-01-31 | 2004-01-30 | Recording and/or playing back device |
| CNB2006101150209A Expired - Fee Related CN100470643C (en) | 2003-01-31 | 2004-01-30 | Recording and/or playing back device |
| CNB2006101150232A Expired - Fee Related CN100485792C (en) | 2003-01-31 | 2004-01-30 | Recording and/or playing back device |
| CNB2006101150228A Expired - Fee Related CN100452188C (en) | 2003-01-31 | 2004-01-30 | Recording and/or playing back device |
| CNB2006101150213A Expired - Fee Related CN100514459C (en) | 2003-01-31 | 2004-01-30 | Recording and/or playing back device |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101150196A Expired - Fee Related CN100489970C (en) | 2003-01-31 | 2004-01-30 | Recording and/or playing back device |
| CNB2006101150209A Expired - Fee Related CN100470643C (en) | 2003-01-31 | 2004-01-30 | Recording and/or playing back device |
| CNB2006101150232A Expired - Fee Related CN100485792C (en) | 2003-01-31 | 2004-01-30 | Recording and/or playing back device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101150213A Expired - Fee Related CN100514459C (en) | 2003-01-31 | 2004-01-30 | Recording and/or playing back device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3873895B2 (en) |
| CN (5) | CN100489970C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4561662B2 (en) * | 2006-03-22 | 2010-10-13 | ティアック株式会社 | Optical disk device |
| CN111966172B (en) * | 2020-07-29 | 2022-03-08 | 苏州浪潮智能科技有限公司 | Exempt from instrument installation hard disk bracket and hard disk case |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001307438A (en) * | 2000-04-21 | 2001-11-02 | Sony Corp | Leaf spring mechanism and disk drive device |
| JP2001357553A (en) * | 2000-06-13 | 2001-12-26 | Kenwood Corp | Disk reproducing device and its adjusting method |
| JP2002015434A (en) * | 2000-06-29 | 2002-01-18 | Toshiba Corp | Disk device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR960005407B1 (en) * | 1993-12-13 | 1996-04-24 | 대우전자주식회사 | Minidisc/compact disc player |
| US5724331A (en) * | 1994-08-25 | 1998-03-03 | Discovision Associates | Disk drive system having improved cartridge-loading apparatus including direct drive gear train and methods for making and operating same |
| JP3714779B2 (en) * | 1997-11-04 | 2005-11-09 | ティアック株式会社 | Disk drive device |
| CN2354290Y (en) * | 1998-11-17 | 1999-12-15 | 吸引力技术工业股份有限公司 | Dust-proof cover of step-by-step motor |
| CN1185650C (en) * | 2001-04-09 | 2005-01-19 | 索尼公司 | Disc recording and reproducing device |
-
2003
- 2003-01-31 JP JP2003025239A patent/JP3873895B2/en not_active Expired - Fee Related
-
2004
- 2004-01-30 CN CNB2006101150196A patent/CN100489970C/en not_active Expired - Fee Related
- 2004-01-30 CN CNB2006101150209A patent/CN100470643C/en not_active Expired - Fee Related
- 2004-01-30 CN CNB2006101150232A patent/CN100485792C/en not_active Expired - Fee Related
- 2004-01-30 CN CNB2006101150228A patent/CN100452188C/en not_active Expired - Fee Related
- 2004-01-30 CN CNB2006101150213A patent/CN100514459C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001307438A (en) * | 2000-04-21 | 2001-11-02 | Sony Corp | Leaf spring mechanism and disk drive device |
| JP2001357553A (en) * | 2000-06-13 | 2001-12-26 | Kenwood Corp | Disk reproducing device and its adjusting method |
| JP2002015434A (en) * | 2000-06-29 | 2002-01-18 | Toshiba Corp | Disk device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100489970C (en) | 2009-05-20 |
| JP2004234799A (en) | 2004-08-19 |
| CN1909077A (en) | 2007-02-07 |
| CN1909080A (en) | 2007-02-07 |
| JP3873895B2 (en) | 2007-01-31 |
| CN100514459C (en) | 2009-07-15 |
| CN100485792C (en) | 2009-05-06 |
| CN100470643C (en) | 2009-03-18 |
| CN1909081A (en) | 2007-02-07 |
| CN1909078A (en) | 2007-02-07 |
| CN1909079A (en) | 2007-02-07 |
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