CN1311466C - Optical disc recording or reproducing device with oblique angle regulator for reading device - Google Patents
Optical disc recording or reproducing device with oblique angle regulator for reading device Download PDFInfo
- Publication number
- CN1311466C CN1311466C CNB2004100447577A CN200410044757A CN1311466C CN 1311466 C CN1311466 C CN 1311466C CN B2004100447577 A CNB2004100447577 A CN B2004100447577A CN 200410044757 A CN200410044757 A CN 200410044757A CN 1311466 C CN1311466 C CN 1311466C
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- axis
- guide
- base
- reader
- adjusting mechanism
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- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
An adjusting mechanism for altering the tilting angle of a guide rod in a plane containing the direction of movement of a pickup and orthogonal to an upper surface of a chassis has a horizontal piece having one end attached to the chassis and the other end in contact with the guide rod for biasing the guide rod toward an adjusting screw and a vertical piece for restraining the guide rod from deflecting in a plane containing the direction of movement of the pickup and approximately parallel to the upper surface of the chassis. The horizontal piece and the vertical piece each have an upper end positioned at a lower level than the lower surface of a tray having a disk placed on a turntable.
Description
Technical field
The present invention relates to have video disc recording or the regenerating unit of adjustment reader with respect to the mechanism at the inclination angle of CD signal face.
Background technology
Fig. 5 is the video disc recording of prior art or the skeleton view of regenerating unit.On base 1, have the turntable 3 of the known CD 7 of mounting and be configured to can near and away from the reader 2 of this turntable 3.Reader 2 its upper surfaces have object lens 22, lead mobile by two axis of guides 4,4 on the base 1.On the carriage 9 on the both ends embedding base 1 of each axis of guide 4.
Fig. 8 is the back view of CD 7.On the signal face of CD 7, be provided with a plurality of grooves 73,73 along its circumferencial direction, when laser radiation is to this groove 73 and when laser radiation is to groove 73 position in addition, catoptrical intensity difference.Thereby regeneration is by 0 and 1 digital signal that constitutes.
As CD, the DVD (digitalversatile disc) of record high density signal has been proposed in recent years.In this DVD, the spacing H between the groove 73,73 of CD radial direction as shown in Figure 8 is narrow.
Therefore, when the optical axis of laser has inclination slightly with respect to the signal face of CD 7, can shine on the groove 73 of errors present, the danger of regenerated signal is correctly arranged.
So, proposed in the mechanism that the inclination angle of adjusting reader 2 is set on the base 1, in the technological process of making video disc recording or regenerating unit, the inclination angle of reader 2 scheme of DVD of finely tuning, can regenerate swimmingly with CD.
Fig. 6 is the cut-open view along the A-A line intercepting of Fig. 5.CD 7 is carried on base 1 in pallet 5 by mounting.Pallet 5 descends flatly move to the top of base 1 from the outside of base 1 by the driving mechanism (not shown) after, with CD 7 mountings on turntable 3.
From the downside of base 1, be screwed into two accordingly with two ends of the axis of guide 4 and adjust bolts 6,6, adjust the two ends of the front end of bolt 6 with each from the below supporting axis of guide 4.The compression spring 90 that the axis of guide 4 is loaded downwards is set in each carriage 9.Utilize compression spring 90 and bracket bolt 6 be formed in the moving direction that comprises reader 2, vertical plane with the upper surface of base 1 in adjust the adjusting mechanism at the inclination angle of reader 2.
For making reader 2 inclinations, rotatable any one adjustment bolt 6.The axis of guide 4 resistance compression springs 90 upwards lift inclination.By the inclination of datum axle 4, reader 2 is tilted.
Fig. 7 is the planimetric map of pallet 5.Optionally the mounting diameter is the major diameter CD of 12cm and the minor diameter CD that diameter is 8cm on pallet 5, is provided with one heart to embed the little recess 52 that major diameter CD big recess of using 51 and the CD that embeds minor diameter are used on pallet 5.On pallet 5, the central opening 50 of crossing over big recess 51 and little recess 52 from an end of pallet 5 is set, the light beam opening 50 by reader 2 with irradiate light to CD 7.
But, the problem below in the adjusting mechanism of prior art, existing.
In the adjusting mechanism of prior art, because compression spring 90 loads the axis of guide 4 downwards, carriage 9 is raised the height of compression spring 90, and the upper end of carriage 9 exceeds the upper surface of reader 2.Thereby under the decline state of pallet 5, carriage 9 must be positioned at the opening 50 of pallet 5, thereby must form the opening 50 of pallet 5 significantly.
Yet when the opening 50 of pallet 5 was big, when little CD being crossed over mistakenly big recess 51 and little recess 52 mountings, little CD had the danger that comes off from pallet 5.If dip angle adjusting mechanism is not set, owing to there is no need dip angle adjusting mechanism is placed in the opening 50, so can dwindle opening 50.But, dip angle adjusting mechanism when regenerated signal on foregoing high-density optical disk, be a kind of must obligato structure.
Summary of the invention
The objective of the invention is in the video disc recording or regenerating unit of the dip angle adjusting mechanism that is provided with reader, can prevent that again little CD from coming off from pallet when reducing the height of adjusting mechanism.
According to the present invention, at the moving direction that comprises reader 2, the adjusting mechanism that changes the inclination angle of the axis of guide 4 in the plane vertical with the upper surface of base 1 has clamping piece 8, this clamping piece has all-in-one-piece spring body and vibrationproof pendulum device, this spring body and the axis of guide 4 extend abreast, the one end is installed on the base 1, the other end and the axis of guide 4 load the axis of guide 4 in contact to adjusting member, this vibrationproof pendulum device restricted guidance axle 4 is at the moving direction that contains reader 2, runout in the plane parallel with the upper surface of base 1
The lower surface that CD 7 is installed in the pallet 5 on the turntable 3 is arranged to be lower than in the upper end of spring body and vibrationproof pendulum device.
That is, under the state of turntable 3, adjusting mechanism is positioned at the below of pallet 5 in CD 7 mountings.Thereby, owing to adjusting mechanism needn't be configured in the opening 50 of pallet 5, so can form little opening 50.Thereby, can prevent that the CD of minor diameter from coming off from pallet 5.
And then, owing to can reduce the height of base 1, can make whole device slimming to pallet 5.
The invention provides a kind of video disc recording or regenerating unit, be equipped with: the turntable 3 that on base 1, makes CD 7 rotations; Be provided with can move freely, can near and leave the reader 2 of turntable 3; The a pair of axis of guide 4, the 4a that extend along the moving direction of reader 2, reader 2 is led; Two ends that offer the described a pair of axis of guide 4,4a embed the carriage 9 in the vertical hole 91 of usefulness; Be arranged on the adjusting mechanism that changes the inclination angle of the described a pair of axis of guide 4,4a in plane moving direction, vertical with the upper surface of base 1 that comprises reader 2; This adjusting mechanism has from the below of base 1 or the side is installed in the adjustment member that is connected on the base 1, with the axis of guide 4,4a; It is characterized by,
Described adjusting mechanism have an end be installed on the base 1, with the axis of guide 4,4a to adjusting the extension spring 65 that member loads,
The extension spring 65 that the lower axis of guide 4 loads is installed obliquely with respect to base 1, this axis of guide 4 is pressed on the lateral margin and bottom surface in the vertical hole (91) of adjusting member and carriage (9), and in the moving direction that comprises reader (2), the plane parallel, limit the runout of this axis of guide (4) with the upper surface of base (1)
The tensile elongation of the extension spring 65 that will load the described a pair of axis of guide 4,4a is set identical length for.
Description of drawings
Fig. 1 is the skeleton view of video disc recording or regenerating unit.
Fig. 2 is the side view when the B direction is observed Fig. 1, represents pallet 5 in the mode of sectional view.
Fig. 3 is the side view of the another kind of dip angle adjusting mechanism of expression.
Fig. 4 is the side view of the another kind of dip angle adjusting mechanism of expression.
Fig. 5 is the video disc recording of prior art or the skeleton view of regenerating unit.
Fig. 6 is the cut-open view of Fig. 5 being cut open with the plane that comprises the A-A line.
Fig. 7 is the planimetric map of pallet.
Fig. 8 is the back view of CD.
Fig. 9 is the skeleton view of video disc recording or regenerating unit.
Figure 10 is the front elevation when the C direction is observed Fig. 9.
Embodiment
First embodiment
Utilize accompanying drawing to describe an example of the present invention in detail below.
Fig. 1 is the video disc recording of relevant present embodiment or the skeleton view of regenerating unit, and the dip angle adjusting mechanism of its reader 2 has certain feature.Reader 2 is led by the axis of guide 4, and can near and away from turntable 3, this is the same with prior art.
Sidepiece on base 1 is provided with motor (M), is connected on the tooth bar 20 that is arranged on reader 2 sidepieces through gear mechanism 21 in the middle of this motor (M).When motor (M) is switched on, each gear rotation of gear mechanism 21, reader 2 moves.The same with prior art, CD 7 mountings are carried on base 1 on pallet 5.
Fig. 2 is the side view when the B direction is observed Fig. 1, represents pallet 5 in the mode of sectional view.Pallet 5 descends, and CD 7 mountings are on turntable 3.The lower surface of pallet 5 leaves the axis of guide 4, and the decline of pallet 5 is not subjected to the obstruction of the axis of guide 4.To adjust bolt 6 from the below of base 1 and be screwed on the base 1, its front end contacts with the axis of guide 4.
The clamping piece 8 that is made of the metal tape bending is being set on the base 1, below the axis of guide 4, and this clamping piece 8 constitutes the dip angle adjusting mechanism of reader 2.This clamping piece 8 has all-in-one-piece and is installed on flexure strip 80 on the base 1, the vertical piece 81 that vertically is provided with from the leading section of this flexure strip 80, from the upper end edge axis of guide 4 outward extending horizontal plates 82 of this vertical piece 81 and from the end of this horizontal plate 82 reclinate stator 83.
When bolt 6 is adjusted in the loading force rotation that overcomes horizontal plate 82, rise on the end of the axis of guide 4, the axis of guide 4 tilts.The reader 2 that is led by the axis of guide 4 also tilts.
As shown in Figure 2, in the structural elements of clamping piece 8, the horizontal plate 82 that is positioned at highest point contacts with the axis of guide 4, is positioned at the position lower than pallet 5.Thereby even will be with CD 7 mountings on turntable 3 and pallet 5 when descending, clamping piece 8 can not counteract pallet 5 yet.
Thereby this needn't resemble and dip angle adjusting mechanism be placed in the opening 50 of pallet 5 prior art, owing to can dwindle this opening 50, thus can prevent that little CD from coming off from pallet 5.Simultaneously, utilize clamping piece 8 that the axis of guide 4 is loaded downwards, but restricted guidance axle 4 the moving direction that comprises reader 2, with the substantially parallel plane of the upper surface of base 1 in runout, so can simplify the structure of dip angle adjusting mechanism.
In Fig. 2, be to utilize clamping piece 80 that the axis of guide 4 is loaded downwards, but also can adopt structure as shown in Figure 3 to replace this form.In this structure, the other end that an end is installed in the extension spring 65 on the base 1 is installed on the axis of guide 4, and the axis of guide 4 is loaded to adjusting bolt 6.With two ends of the axis of guide 4 carriage 9,9 is set accordingly, described two ends are embedded in the vertical hole 91 on the side that is opened in carriage 9.By the axis of guide 4 being embedded in this vertical hole 91, restricted guidance axle 4 the moving direction that contains reader 2, with the substantially parallel plane of the upper surface of base 1 in runout.
In addition, here, be to adjust bolt 6 by rotation to adjust the inclination angle of the axis of guide 4, but also can be as shown in Figure 4, cam bit 66 is set on base 1 replaces this form with can move freely.Fig. 4 is the front elevation during from turntable 3 unilateral observation readers 2.The inclined-plane 67 that cam bit 66 setting contact with the axis of guide 4 moves along base 1 in the plane vertical with the moving direction of reader 2 by making cam bit 66, and inclined-plane 67 is approaching and away from the axis of guide 4, reader 2 inclinations.
In addition, when adjusting the inclination angle of the axis of guide 4, for example can consider that one side confirms that the error rate of regenerated signal simultaneously adjusts.This can have the CD of reference signal by regenerative recording, and one side is confirmed the error rate of regenerated signal, that is, the bit string that affirmation can not correctly be regenerated is with respect to the ratio of the bit string of reference signal, and bolt 6 is adjusted in the one side rotation, adjusts the inclination angle of the axis of guide 4.Up to adjust to error rate minimum till.In addition, the CD of reference signal also can regenerative recording be arranged, adjust the inclination angle and make the instability of this regenerated signal for minimum.
Second embodiment
In commercially available reader 2, under the state that is installed on the base 1, it is different to be embedded in the hole pattern on the axis of guide 4, the 4a unshowned height.The applicant's conception is, in the device that adopts this cheap reader 2, reduces the height of dip angle adjusting mechanism.
Fig. 9 is the skeleton view of another video disc recording or regenerating unit, utilizes extension spring 65,65 that two axis of guides 4,4a are loaded downwards.That is, the same with structure shown in Figure 3, the height of the adjusting mechanism at the inclination angle of the reduction change axis of guide 4.Reader 2, moves along this axis of guide 4 to the axis of guide 4 on right side with the very little state setting-in of clearance.Reader 2 with state setting-in that clearance is arranged to the axis of guide 4.
On base 1, with two ends of two axis of guides 4,4a carriage 9,9 is set accordingly, the lower end of the axis of guide 4,4a is positioned at carriage 9, accepts the front end of the adjustment bolt 6,6 that embeds from the downside of base 1.Two axis of guides 4,4a are loaded downwards by the extension spring 65,65 that an end hangs on the base 1, are crimped on to adjust on the bolt 6,6.
In the present embodiment, though it is characterized by the height difference of two axis of guides 4,4a, to the extension spring the 65, the 65th that two axis of guides 4,4a load, identical.
Figure 10 is the front elevation of being seen when the C direction is observed Fig. 9.The axis of guide 4 on right side is consistent with the shape of reader 2, is arranged to be lower than the axis of guide 4a in left side, and two axis of guides 4,4a are embedded in the vertical hole 91 of carriage 9.On the axis of guide 4 on right side, with respect to base 1 extension spring 65 is set obliquely, on the axis of guide 4a in left side, extension spring 65 vertically is set with respect to base 1.Hang obliquely with respect to base 1 by the extension spring 65 that will hang on the lower axis of guide in position 4, the tensile elongation of two extension springs 65,65 is arranged to the same.
Because extension spring 65 is mounted obliquely within respect to base 1 on the axis of guide 4 on right side, this axis of guide 4 is crimped on the lateral margin and bottom surface in vertical hole 91.Thereby, utilize an extension spring 65 that the axis of guide 4 is loaded downwards, restricted guidance axle 4 the moving direction that contains reader 2, with the substantially parallel plane of the upper surface of base 1 in runout.Because reader 2 is directed on the axis of guide 4 on right side and moves, and by this axis of guide 4 is located in interior parallel with the upper surface of base 1 basically plane at the moving direction that contains reader 2, can correctly determine the moving direction of reader 2.
Simultaneously, because the tensile elongation of two extension springs 65,65 is identical, can use identical two extension springs 65,65.Thereby, in process for making, can improve the installation exercise performance of extension spring 65.
In the present embodiment, also can cam bit 66 be set on base 1 replace adjusting bolt 6,6 as shown in Figure 4.
Claims (1)
1. video disc recording or regenerating unit are equipped with: the turntable (3) that makes CD (7) rotation on base (1); Be provided with can move freely, can near and leave the reader (2) of turntable (3); The a pair of axis of guide that extends along the moving direction of reader (2), reader (2) is led (4,4a); Two ends that offer the described a pair of axis of guide (4,4a) embed the carriage (9) in the vertical hole (91) of usefulness; Be arranged in plane moving direction, vertical with the upper surface of base (1) that comprises reader (2) adjusting mechanism at the inclination angle that changes the described a pair of axis of guide (4,4a); This adjusting mechanism has from the below of base (1) or the side is installed in the adjustment member that base (1) is gone up, is connected with the described a pair of axis of guide (4,4a); It is characterized by,
Reader (2) is to form closely spaced state setting with an axis of guide (4), and this axis of guide (4) is arranged to be lower than another axis of guide (4a),
Described adjusting mechanism have an end be installed in base (1) go up, will the described a pair of axis of guide (4,4a) to the extension spring (65) of adjusting the member loading,
The extension spring (65) that the lower axis of guide (4) loads is installed obliquely with respect to base (1), this axis of guide (4) is pressed on the lateral margin and bottom surface in the vertical hole (91) of adjusting member and carriage (9), and in the moving direction that comprises reader (2), the plane parallel, limit the runout of this axis of guide (4) with the upper surface of base (1)
The tensile elongation of the extension spring (65) that will load the described a pair of axis of guide (4,4a) is set identical length for.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000075665 | 2000-03-17 | ||
| JP75665/00 | 2000-03-17 | ||
| JP128750/00 | 2000-04-28 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011117745A Division CN1184623C (en) | 2000-03-17 | 2001-03-16 | Optical disc recording and reproducing device with oblique angle regulator for reading device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1691186A CN1691186A (en) | 2005-11-02 |
| CN1311466C true CN1311466C (en) | 2007-04-18 |
Family
ID=35346546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100447577A Expired - Fee Related CN1311466C (en) | 2000-03-17 | 2001-03-16 | Optical disc recording or reproducing device with oblique angle regulator for reading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1311466C (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10105981A (en) * | 1996-09-26 | 1998-04-24 | Toshiba Corp | Disk reproducing device |
| JPH10269579A (en) * | 1997-03-27 | 1998-10-09 | Toshiba Corp | Disk reproducing device |
-
2001
- 2001-03-16 CN CNB2004100447577A patent/CN1311466C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10105981A (en) * | 1996-09-26 | 1998-04-24 | Toshiba Corp | Disk reproducing device |
| JPH10269579A (en) * | 1997-03-27 | 1998-10-09 | Toshiba Corp | Disk reproducing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1691186A (en) | 2005-11-02 |
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