CN1036474A - The sensor feed mechanism of disc-like record carrier replay device - Google Patents
The sensor feed mechanism of disc-like record carrier replay device Download PDFInfo
- Publication number
- CN1036474A CN1036474A CN 88109080 CN88109080A CN1036474A CN 1036474 A CN1036474 A CN 1036474A CN 88109080 CN88109080 CN 88109080 CN 88109080 A CN88109080 A CN 88109080A CN 1036474 A CN1036474 A CN 1036474A
- Authority
- CN
- China
- Prior art keywords
- nut
- sensor
- disc
- record carrier
- feed screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/0857—Arrangements for mechanically moving the whole head
- G11B7/08582—Sled-type positioners
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
Landscapes
- Moving Of Heads (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
The sensor feed mechanism of disc-like record carrier replay device of the present invention, nut is limited in the coupling member that extends out from the sensor module main body that can move a little, this nut matches with the rectilinear sensor feed screw, and this feed screw is rotated by motor-driven.The sensor assembly is moved along linear guide, it is characterized in that: on above-mentioned coupling member, be provided with elastic component, this elastic component along advance for screw rod radially nut is applied elastic pressure the time, also the spinning movement to nut applies elastic resistance.
Description
The present invention relates to the sensor feed mechanism of disc-like record carrier replay device, it be provided with elastic component to reduce since exist between sensor feed screw and the nut the gap and from cause the vibration of sensor module between extended coupling member of sensor module main body and the nut in the gap of sense of rotation, make it to carry out easily the position exploration of sensor module.
Usually, to be recorded in the CD(laser disk) etc. the disc-like record carrier replay device reset of the information on the so-called disc-like record carrier, be when record carrier is rotated, laser is shone on the record surface of record carrier from sensor module, read information by reflected light.
At this moment, sensor module is fixed, by continuously changing the angle of inclination of object lens, the direction that makes laser radiation moves the information of reading continuously along the radial outward of record carrier.When this amount of movement reaches a certain amount of (for example 0.5mm),, then, return again above-mentioned same action with radially feeding outwardly of sensor module (pitch feeding).And when making sensor module carry out the pitch feeding, object lens just move the positional information of exploring sensor module promptly.In addition, sensor module is also made the back and forth movement of fine pith apace on the advance and retreat direction, last, is parked in the next position of determining.So the assembling of object lens will consider to make its action extremely observantly in sensor module.
In this replay device, the sensor feed mechanism that has earlier as shown in Figure 7 and Figure 8, sensor feed screw a matches with the nut c that is assemblied in sensor module b one end, utilizes motor-driven sensor feed screw a rotation, and sensor module b is moved along rectilinear guide rod e.In the coupling member g that nut c is limited in stretching out on the main body by sensor module b, owing on mounting technology, be difficult to guarantee the depth of parallelism of guide rod e and sensor feed screw a, so, for the also unlikely bearing accuracy that influences sensor module b when the depth of parallelism is not good, between connecting elements g and nut c, leave a little gap h in the sense of rotation of nut c.
Because there is a little gap h between connecting portion g and the nut c, so, in order to explore the position of sensor module b, when if motor d does the forward and reverse rotation of fine pith apace repeatedly, nut c also can vibrate continually along sense of rotation, this vibration and when vibration nut c the bump of generation will pass to the main body f of sensor module b with connecting elements g collision.
So the object lens i that is installed in the sensor module b will responsive reaction, thereby produces vibration tempestuously, the result, the information on the reading and recording face just needs the long time, very causes and can not read.
In view of the problem that prior art as mentioned above exists, the application's purpose is to want to provide a kind of sensor feed mechanism of disc-like record carrier replay device, and it can prevent the vibration of object lens and the accurate and promptly information on the reading and recording face.
In order to achieve the above object, the sensor feed mechanism of disc-like record carrier replay device of the present invention is provided with elastic component on the coupling member that is stretched out by the sensor module main body, this elastic component is stuck on the nut that matches with the sensor feed screw, radially apply elastic pressure along this feed screw, simultaneously, the spinning movement to this nut applies elastic barrier power.
Since the elastic component that on coupling member, is provided with can be along the sensor feed screw radially nut is applied an elastic pressure always, simultaneously, can apply elastic resistance to the spinning movement of nut, therefore the gap between nut and the feed screw in fact just becomes zero, but also can suppress the vibration of nut along sense of rotation.
Below in conjunction with Fig. 1 to Fig. 6 embodiments of the invention are described, Fig. 1 is suitable for the oblique view that disc-like record carrier replay device of the present invention cuts a part, Fig. 2 is the backplan of sensor feed mechanism of the present invention, Fig. 3 is the sectional view of the III-III line along Fig. 2, and Fig. 4 is the sectional view of the IV-IV line along Fig. 1.Among Fig. 11 is the disc-like record carrier replay device, is provided with playback mechanism 2 at its about middle body, and this reproduction part 2 is identical with prior art, comprises rotating disk 4, steady arm 5 and sensor module 6 by motor 3 driven in rotation.
The a pair of rigging screw 8 of motor 3 usefulness be fixed on substrate 7 below.The rotating shaft 9 of this motor 3 be projected into substrate 7 above, rotating disk 4 is fixed in this rotating shaft 9.
Steady arm 5 is positioned at the top of substrate 7, and remaining on by the anchor clamps 11 that are made of leaf spring can be along on the holding plate that axially moves freely 10 of rotating shaft 9, and facing to rotating disk 4.
Below substrate 7, as shown in Figure 2, be screwed a pair of sensor support base 16a and the 16b that makes by synthetic resin respectively, between these two bearing 16a and 16b, be equipped with pair of guide rods 17a and 17b abreast.And this, can be free to slide in insert opening 18a, the 18b of main body 13 both sides of sensor module 6 guide rod 17a and 17b intercalation, and like this, the lower surface that sensor module 6 just can be parallel to substrate 7 moves freely.In addition, be circular hole as the insert opening 18a of the guide rod 17a of benchmark, the insert opening 18b of the attached guide rod 17b that helps is an elliptical aperture.The sensor feed screw 19 parallel with guide rod 17a and 17b is supported between sensor support base 16a and the 16b, and the nut that leaves certain interval 15 that is limited in the aforementioned coupling member 14 matches with this feed screw 19.Below coupling member 14, be provided with elastic component shown in Figure 2 20.This elastic component 20 is made by leaf spring, and its plane of another lateral plate 20b of ining succession, the middle part of a side 20a slightly is the T font.The front end of lateral plate 20b is bent into bend (teat) 21, the two ends of lateral plate 20a and linking part 14 1 reinstate trip bolt 22 be fixed on main body 13 below, the front end of another lateral plate 20b reach nut 15 below.The bottom of the periphery of this nut 15 is axially arranged with the breach 23 that is in the shape of the letter V along it, the bottom that bend 21 roof pressures of above-mentioned another lateral plate 20b front end this breach 23.Therefore, elastic component 20 along sensor feed screw 19 radially nut 15 is applied elastic pressure in, also the spinning movement to nut 15 is applying elastic resistance.The top of the main body 13 of sensor module 6 pass peristome 7a on the substrate 7 reach substrate 7 above, can move.And,, sensor module 6 can be moved along arrow A among Fig. 2 and Fig. 3 and B direction owing to follow the screw rod feeding effect of the forward and reverse rotation of feed screw 19.
The two ends rotation of sensor feed screw 19 is supported in freely with each sensor support base 16a, 16b and forms on the bearing 24,25 of one.One end of sensor feed screw 19 is fixed with belt pulley 26, and this belt pulley 26 passes through endless belt 28 by feeding motor 27 driven in rotation.The certain amount of sensor feed screw 19 every rotations, sensor module 6 just is fed a pitch.In addition, 29 among Fig. 1 is storage boxes of depositing a plurality of disc-like record carriers (diagram omit), the 30th, and close 9 from storage box and take out desirable disc-like record carriers and serve the unloading device of rotating disk 4.
The action of disc-like record carrier replay device 1 is the same with prior art, earlier disc-like record carrier 31(referring to Fig. 4) be placed on the rotating disk 4, steady arm 5 declines then, disc-like record carrier 31 by motor 3 driven in rotation by this steady arm 5 and rotating disk 4 clampings.Meanwhile, sensor feed screw 19 is by feeding motor 27 driven in rotation, and revolution moves certain amount, and sensor module 6 is just along guide rod 17a and pitch of 17b feeding.
In addition and since 20 pairs of nuts 15 of elastic component along feed screw 19 radially be applied with elastic pressure, so, the in fact vanishing of gap between nut 15 and the feed screw 19, nut 15 can rotate with feed screw 19 exactly.
Fig. 5 represents the application's the 2nd embodiment, and this embodiment is made for the nut that cuts half with nut 15a, like this nut 15a is cut the nut of half, easily assembling.
Also have, Fig. 6 represents the application's the 3rd embodiment, and this embodiment is processed into the nut that cuts half to nut 15a, simultaneously, and also elastic component 20 ' form one with the coupling member 14a that makes by elastic synthetic resin.Like this, by elastic component 20a is formed one with elastic synthetic resin and coupling member 14a, can reduce the number of part.
In addition, because other structures of the 2nd and the 3rd embodiment are identical with above-mentioned the 1st embodiment with effect, so part identical on the figure represents with prosign that all its explanation is omitted herein.
As mentioned above, the sensor feed mechanism of the application's disc-like record carrier replay device, utilization be arranged on the coupling member elastic component to nut along feed screw radially apply elastic pressure the time, spinning movement to nut applies elastic resistance again, so, in order to explore the position of sensor cluster, both made the feeding motor repeatedly do rapidly forward and reverse rotation of fine pith, also can suppress nut in the vibration of direction of rotation, thereby can prevent the fine pith bump between coupling member and the nut. Therefore, no matter whether have the gap between feed screw and the nut and between coupling member and the nut, can both suppress the nut outer peripheral portion and produce vibration and bump, thereby can prevent the object lens vibration, guarantee accurately and promptly to read the information on the recording surface.
Moreover, because radially nut is applied with elastic pressure at feed screw, this just makes the gap between nut and the feed screw in fact become zero, thereby, nut is rotated with feed screw exactly, eliminated the hysteresis of spinning movement of the relative feeding motor of action of sensor cluster, further raising information reads precision.
Fig. 1 to Fig. 4 represents first embodiment of the application, and Fig. 1 is that the disc-like record carrier replay device that is suitable for the application has cut a part of oblique view, and Fig. 2 is the backplan of the application's feed mechanism.Fig. 3 is the sectional view of the III-III line along Fig. 2, and Fig. 4 is the sectional view of the IV-IV line along Fig. 1.Fig. 5 is state the application's identical with Fig. 4 the 2nd embodiment, and Fig. 6 is state the application's identical with Fig. 4 the 3rd embodiment, and Fig. 7 is the backplan of prior art sensor feed mechanism, and Fig. 8 is the planimetric map of the nut portion of Fig. 7.
1 ... the disc-like record carrier replay device.
6 ... sensor module.
13 ... main body, 14,14a ... coupling member,
15,15a ... nut 17a, 17b ... guide rod
20,20 ' ... elastic component 21 ... bend (teat)
23 ... breach 27 ... the feeding motor.
Claims (3)
1, the sensor feed mechanism of disc-like record carrier replay device, nut is limited in the coupling member that extends out from the sensor module main body that can move a little, this nut matches with the rectilinear sensor feed screw, this feed screw is rotated by motor-driven, the sensor assembly is moved along linear guide rod, it is characterized in that: on above-mentioned coupling member, be provided with elastic component, this elastic component along feed screw radially nut is applied elastic pressure the time, also the spinning movement to nut applies elastic resistance.
2, the sensor feed mechanism of disc-like record carrier replay device according to claim 1 is characterized in that: be provided with breach in above-mentioned nut neighboring, be provided with the teat that snaps in this breach on aforementioned elastic component.
3, the sensor feed mechanism of disc-like record carrier replay device according to claim 2, it is characterized in that: above-mentioned elastic component is made with leaf spring, and the front end bending of this leaf spring, with its bend as aforementioned teat.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP47638/88 | 1988-03-02 | ||
| JP1988047638U JPH0731417Y2 (en) | 1988-04-08 | 1988-04-08 | Pickup feed mechanism for disc type recording medium reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1036474A true CN1036474A (en) | 1989-10-18 |
Family
ID=12780783
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88214592U Expired - Lifetime CN2041446U (en) | 1988-04-08 | 1988-10-05 | Sensor feed apparatus for reproducer of disc recording carrier |
| CN 88109080 Pending CN1036474A (en) | 1988-04-08 | 1988-10-05 | The sensor feed mechanism of disc-like record carrier replay device |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88214592U Expired - Lifetime CN2041446U (en) | 1988-04-08 | 1988-10-05 | Sensor feed apparatus for reproducer of disc recording carrier |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH0731417Y2 (en) |
| CN (2) | CN2041446U (en) |
| GB (1) | GB2217094B (en) |
| HK (1) | HK74493A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5175723A (en) * | 1990-06-20 | 1992-12-29 | Avnet, Inc. | Direct drive mechanism for data pickup carriage with no direct attachment between motor and frame |
| KR950001733A (en) * | 1993-06-30 | 1995-01-03 | 배순훈 | Pickup transfer device using Hyper Cycloid Gearing |
| JPH09213025A (en) * | 1996-02-08 | 1997-08-15 | Alps Electric Co Ltd | Optical pickup transfer mechanism |
| JPH09265743A (en) * | 1996-03-27 | 1997-10-07 | Ricoh Co Ltd | Optical disk device |
| KR0183893B1 (en) * | 1996-06-27 | 1999-04-15 | 김광호 | Pickup phase adjustment apparatus of disk player |
| KR100259150B1 (en) * | 1997-11-28 | 2000-06-15 | 윤종용 | Optical pickup movement apparatus |
| JP2000251423A (en) * | 1999-02-26 | 2000-09-14 | Pioneer Electronic Corp | Pickup carriage feed mechanism |
| JP2000339882A (en) * | 1999-05-31 | 2000-12-08 | Pioneer Electronic Corp | Information recording and reproducing device |
| DE10023581A1 (en) | 2000-05-13 | 2001-11-15 | Bosch Gmbh Robert | Optical scanning device e.g. for CD player in motor vehicle, has scanning head specifically provided with an objective for focusing light-beam on disc |
| TW556941U (en) * | 2002-12-09 | 2003-10-01 | Accesstek Inc | Wedge for a guide screw |
| TWI489452B (en) * | 2013-07-29 | 2015-06-21 | Wistron Corp | Computer system and controlling method for hard disk |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1230851A (en) * | 1967-05-08 | 1971-05-05 | ||
| US4071866A (en) * | 1977-03-16 | 1978-01-31 | Sycor, Inc. | Disc recorder drive follower assembly |
| JPS6023359U (en) * | 1983-07-26 | 1985-02-18 | ソニー株式会社 | Transfer mechanism |
| JPS6222696U (en) * | 1985-07-25 | 1987-02-10 |
-
1988
- 1988-04-08 JP JP1988047638U patent/JPH0731417Y2/en not_active Expired - Lifetime
- 1988-10-05 CN CN88214592U patent/CN2041446U/en not_active Expired - Lifetime
- 1988-10-05 CN CN 88109080 patent/CN1036474A/en active Pending
-
1989
- 1989-01-30 GB GB8901941A patent/GB2217094B/en not_active Expired - Fee Related
-
1993
- 1993-07-29 HK HK74493A patent/HK74493A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| HK74493A (en) | 1993-08-06 |
| JPH0731417Y2 (en) | 1995-07-19 |
| JPH01151465U (en) | 1989-10-19 |
| CN2041446U (en) | 1989-07-19 |
| GB2217094A (en) | 1989-10-18 |
| GB8901941D0 (en) | 1989-03-22 |
| GB2217094B (en) | 1992-09-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |