CN1284176C - Optical pickup device - Google Patents
Optical pickup device Download PDFInfo
- Publication number
- CN1284176C CN1284176C CN 200410045653 CN200410045653A CN1284176C CN 1284176 C CN1284176 C CN 1284176C CN 200410045653 CN200410045653 CN 200410045653 CN 200410045653 A CN200410045653 A CN 200410045653A CN 1284176 C CN1284176 C CN 1284176C
- Authority
- CN
- China
- Prior art keywords
- countershaft
- main part
- sliding
- fitting portion
- optical take
- 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.)
- Expired - Fee Related
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 35
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 5
- 230000005465 channeling Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 210000002683 foot Anatomy 0.000 description 19
- 230000003321 amplification Effects 0.000 description 6
- 238000003199 nucleic acid amplification method Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 229910001234 light alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 241000222712 Kinetoplastida Species 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
Images
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Moving Of Heads (AREA)
Abstract
In the optical pickup device 10, a first leg 24a of a second metal bearing part 22 is slid into contact with a countershaft 18 by holding the same, the part thereof always in contact with the counter shaft 18 is constituted of a resin sliding contact body 26 of another member whose sliding contact surface 26a is a cylindrical surface, a dovetail tenon 30 is disposed, and fixed in the dovetail groove 32 of the first leg 24a by dovetail assembling connection. Thus, mechanical strength and wear resistance are made to be compatible without inhibiting device miniaturization. The invention is capable of providing a bearing mechanism engaged with the countershaft of an optical pickup device.
Description
Technical field
The optical take-up apparatus that the information data that the present invention relates to write down in the CD to CD (compact disk) and DVD (digital versatile disc) etc. reads and writes especially relates to the improvement of the bearing portion of the transporter that optical devices are carried.
Background technology
Generally, optical take-up apparatus, as everyone knows, the transporter of the optical devices of object lens, prism, laser irradiation device, optical integrating element etc. will have been loaded, be supported on sliding freely in respect to the parallel face of the record regenerating face of CD, radially carry out driving shaft (main shaft) that straight line moves go up go forward side by side mobile, CD is carried out the reading or writing of information data (action of these optical facilities is not main points of the present invention, the explanation that the Therefore, omited is detailed).
At this moment, need correctly keep the distance of the record surface and the object lens of CD.Therefore, transporter is for the swing around driving shaft limits to following it to move, the bearing portion on the countershaft that is provided with abreast with driving shaft in the same plane parallel with CD of generally will being bearing in sliding freely is arranged on the position away from driving shaft, promptly clips the opposition side of object lens ground at driving shaft.
Bearing portion is formed by the light-alloy or the resin molding material of aluminium etc., it is the piece that is installed in the U font that one moves on the transporter body, utilize the top and bottom of 2 foots at formation beginning from 2 relative direction clamping countershafts, the runout to above-below direction limits usually.Here, the foot that is positioned at upside all the time with the top sliding contact of countershaft, restriction is towards the runout of below, but what be positioned at the foot of downside and countershaft is followingly keeping small gap, by realizing little the moving of slyness and resistance, make the device low noiseization, guarantee the durable life-span.
But in order to tackle the requirement of the whole miniaturization and of device, the bearing that is made of light metal material is because of wearing and tearing with the slip of countershaft.In addition, can select anti abrasive material, but because small-sized by the bearing that resin molding material constitutes, as the tectosome undercapacity, can't anti impulsion load, there is the danger that makes bearing portion damaged because of usage frequency and environment for use.
For this reason, the Jap.P. spy opens among the 2001-256739, with resin system the 2nd fastened component 302 sliding freely with countershaft 202 sliding contacts, and supporting irradiation unit 110, the 2 fastened components 302 are provided with the engaging claw 302a that can engage with metallic the 1st fastened component 301 on being fixedly arranged on irradiation unit 110 integratedly.But, comprise the structure of engaging claw 302a at interior resin system the 2nd fastened component 302, need big space because of it is complex-shaped, thus can't tackle in recent years along with movable typeizations such as microcomputer and CD players and cause to the low price of optical take-up apparatus and the requirement of miniaturization and thin typeization.
Summary of the invention
In view of this, the objective of the invention is to, provide a kind of and can overcome the problems referred to above, have the structure of the bearing portion of simple and easy and the composition that permanance is good.
In order to achieve the above object, optical take-up apparatus of the present invention comprises: transporter is used to carry laser beam is converged at the optical devices of data channel to carry out data read or to write on the CD; Driving shaft and countershaft are used for the straight line of transporter in the plane parallel with the record surface of CD moved channeling conduct, so that CD is radially being scanned,
Transporter has the 1st bearing portion that is supported on driving shaft sliding freely, is supported on the 2nd bearing portion of countershaft sliding freely, and the 2nd bearing portion has main part, be provided on this main part and with the sliding part of countershaft sliding contact,
Sliding part is the member different with main part and is formed by resin material, and be formed with fitting portion facing on the inner face of countershaft of main part, this fitting portion is along extending with the countershaft quadrature and towards the direction parallel with the record surface of CD, at the chimeric sliding part of this fitting portion.
And described main part is formed by metal material.And, on described fitting portion, be formed with dovetail groove, it is chimeric that described main part and described sliding part both can utilize dovetail shaped to combine to carry out, (Japanese: ホ ゾ cave), described main part utilizes dihedral to combine (Japanese: ホ ゾ Group Jie ぎ Knot closes) with described sliding part to carry out chimeric also can to form the dihedral hole on described fitting portion.
As mentioned above, optical take-up apparatus of the present invention, as described in technical scheme 1, the 2nd bearing has main part, be provided on the main part and with the sliding part of countershaft sliding contact, sliding part is different members with main part, is formed by resin material simultaneously.Therefore, the sliding part light weight of resin material, friction factor is little, so sliding is good, be difficult for to produce wearing and tearing and cutting (Japanese: cut れ), can realize reducing noise and improving the durable life-span.
Optical take-up apparatus of the present invention as described in technical scheme 2, is formed with on main part at the orthogonal directions of countershaft and the fitting portion that extends with the record surface parallel direction of CD, and sliding part and fitting portion are chimeric.Therefore, can prevent that sliding part from coming off because of the external loading of sliding action etc. with simple structure.So can realize the miniaturization and the thin typeization of bearing portion, its result can realize the miniaturization and the thin typeization of optical take-up apparatus.
And, optical take-up apparatus of the present invention, as described in technical scheme 3, main part is formed by metal material, can guarantee the physical strength and the mar proof of bearing portion simultaneously.
And, optical take-up apparatus of the present invention, as described in technical scheme 4, on fitting portion, be formed with dovetail groove, main part and sliding part combine with dovetail and carry out chimericly, thereby when this sliding part is installed, do not need the auxiliary body of auxiliary part such as the fixing screw that is used to install and mount pad or complicated shape, with small-sized, do not take up room, can realize saving the miniaturization of space, device.
On the other hand, optical take-up apparatus of the present invention, as described in technical scheme 5, be formed with the dihedral hole on described fitting portion, it is chimeric that described main part and described sliding part utilize dihedral to combine to carry out, the simple shape of sliding part, so the notes type is easy, even miniaturization also can be guaranteed enough intensity, help mould manufacturing in batches, can reduce manufacturing cost.
Description of drawings
Fig. 1 is the summary vertical view of outward appearance of an embodiment of expression optical take-up apparatus of the present invention.
Fig. 2 is the side view of expression along the 2-2 line of Fig. 1.
Fig. 3 (a) is the amplification stereogram of slide mass of an embodiment of the 2nd bearing portion of optical take-up apparatus of the present invention.(b) be the local amplification stereogram of the 2nd bearing portion of optical take-up apparatus of the present invention.
Fig. 4 (a) is the amplification stereogram of slide mass of other embodiment of the 2nd bearing portion of optical take-up apparatus of the present invention.(b) be the local amplification stereogram of the 2nd bearing portion of optical take-up apparatus of the present invention.
Embodiment
Below, describe with reference to the example of accompanying drawing optical take-up apparatus of the present invention.With the vertical view of Fig. 1 and along the side view of the Fig. 2 shown in the 2-2 line of Fig. 1, the outward appearance of the summary of expression optical take-up apparatus 10.Among Fig. 1 and Fig. 2, optical take-up apparatus 10 comprises: the driving shaft 16 that has loaded transporter 14 to the optical devices of CD 12 irradiating lasers, transporter 14 is moved towards radially (tracking direction) of CD 12, be used for the countershaft 18 of transporter 14 along the plane channeling conduct parallel with the record surface of CD 12.
Fig. 3 is an embodiment of the 2nd bearing portion of optical take-up apparatus 10 of the present invention.In the 2nd bearing portion 22 shown in the local amplification stereogram of Fig. 3 (b), slide mass 26 is chimeric fixing with the 1st 24a of foot that constitutes main part 23.
Slide mass (sliding part) the 26th is by selecting suitable resin to form from engineering plastics.In addition, slide mass 26 shown in Fig. 3 (a), forms semi-cylindrical (so-called semi-cylindrical shaped) with the slipping plane 26a of countershaft 18.Make semi-cylindrical by slipping face 26a, the contact site of countershaft 18 and slide mass 26 becomes the tiny dots that quadrature contacts between the barrel surface, can alleviate frictional resistance.The chimeric surface 26b with the 1st 24a of foot of slide mass 26 is formed by the plane, shown in double dot dash line, can be provided with 1 at least at central portion and dodge groove 26c.And the cylindrical shape arc surface that slips face 26a faces the interface 28 of two end edge portions, 27 formation of chimeric surface 26b perpendicular to chimeric surface 26b, in addition, becomes the inclined-plane of dovetail 30 towards chimeric surface 26b.
On the other hand, the inner face that faces countershaft 18 that constitutes the 1st 24a of foot of main part 23 forms fitting portion 25, and this fitting portion 25 extends at the orthogonal directions of countershaft 18 and the direction parallel with the record surface of CD 12 from the U font piece open end side 24c of the 2nd bearing portion 22.More particularly, the fitting portion 25 open end side 24c that is formed on the 2nd bearing portion 22 has the dovetail groove 32 of opening.Dovetail groove 32 be the dovetail 30 with slide mass 26 complement one another identical shaped.And, the dovetail 30 of slide mass 26 is chimeric from the fitting portion 23 of open end side 24c and the 1st 24a of foot, can make face of cylinder 26a arrive the position relative and fix with countershaft 18.
This occasion, as long as from the grooving of chimeric surface 26b in the middle body incision appropriate depth of slide mass 26, be provided with at least 1 and dodge groove 26c, can utilize the elasticity of the resin that constitutes slide mass 26 itself to make to dodge groove 26c and be out of shape, can easily slide mass 26 be pushed towards the direction that narrows down.Behind the fitting portion 25 chimeric location with slide mass 26 and the 1st 24a of foot, be pressed into by the sheet material (not shown) with suitable thickness and dodge groove 26c in case the elastic deformation of on-slip kinetoplast 26, the 1st 24a of foot of slide mass 26 and the 2nd bearing portion 22 combines closely with dovetail and is affixed.The occasion that the face that the slips 26a of slide mass 26 sustains damage is pressed into the sheet material of dodging in the groove 26c as long as remove, and allows slide mass 26 elastic deformations, can easily change slide mass 26.
Fig. 4 is other embodiment of the 2nd bearing portion of optical take-up apparatus 10 of the present invention.In the 2nd bearing portion 122 shown in the local amplification stereogram of Fig. 4 (b), slide mass 126 is embedded in the 1st 124a of foot that constitutes main part 123 and fixes.The member common with the foregoing description uses identical symbol.
Slide mass 126 is to be formed by the appropriate resin of selecting from engineering plastics.In addition, slide mass 126 shown in Fig. 4 (a), is the profiled member with the cross section that roughly is the T font, has pedestal portion 127 and head 128, and the face that the slips 126a head that becomes with countershaft 18 forms elliptic cylinder.With the chimeric pedestal portion 127 of the 1st 124a of foot on further be formed extended at both sides and protrude, be crimped on the 127a of the portion that is pressed into that is arranged with at the madial wall 129a of the dihedral hole of the 1st 124a of foot 129a towards the side.Be formed with inclined-plane 127b, the 127c that dwindles towards direction of insertion (arrow S) on the 127a of portion being pressed into, thereby easily insert in the dihedral hole 129.The bottom surface of pedestal portion 127 is to reduce the structure of slipping face.Specifically, two side portions 127d contacts with the bottom surface 129b in dihedral hole 129, middle body be concaved with avoid contacting with bottom surface 129b dodge groove 127e.Not shown mould is provided with cast gate in this part, has got rid of slipping the influence of face.
On the other hand, be formed with fitting portion 125 on the 1st 124a of foot of formation main part 123, this fitting portion 125 extends at the orthogonal directions of countershaft 18 and the direction parallel with the record surface of CD 12 from the U font piece open end side 124c of the 2nd bearing portion 122.More particularly, be formed with the dihedral hole 129 that has opening at the open end side 124c of the 2nd bearing portion 122 on the fitting portion 125.Dihedral hole 129 be the pedestal portion 127 with slide mass 126 complement one another identical shaped, and a side that faces countershaft 18 has the opening 131 of the logical head 128 of embedding.And, can be with slide mass 126 from chimeric with the beginning 124c of portion and the dihedral hole 129 of the direction of the axis normal of the glide direction that becomes countershaft 18.On the madial wall 129a in dihedral hole 129, convex with from the beginning 124c of portion towards the depth width the trapezoidal convex surface 129c that increases, and be pressed into the 127a of portion sliding contact.With slide mass 126 and fitting portion 125 when chimeric, the insertion initial stage, little with the friction of slide mass 126, insert when finishing and can utilize the big face that slips to guarantee frictional engagement.
Among the embodiment 2,, can reduce the trouble of moulding not because of the dovetail 30 of sharp keen edge easy deformation.In addition,, reduce restriction, mould is oversimplified mould than the easier flatness of slipping part of guaranteeing slide mass 126 and fitting portion 125 of the composition face of dovetail groove 32.The structure role of the foregoing description all is that main part 23,123 is made of metal material, when guaranteeing intensity, slide mass 26,126 is made the member different with main part 23,123, and constitutes to guarantee mar proof with resin.
More than embodiment is illustrated, the present invention is not limited to illustrated embodiment, for its shape and structure, in not breaking away from composition aim scope of the present invention, can carry out various modifications and changes part composition etc. to thin portion.
Claims (4)
1. optical take-up apparatus comprises:
Transporter is used to carry laser beam is converged at the optical devices of data channel to carry out data read or to write on the CD;
Driving shaft and countershaft are used for the straight line of described transporter in the plane parallel with the record surface of described CD moved channeling conduct, so that described CD is radially being scanned, it is characterized in that,
Described transporter has the 1st bearing portion that is supported on described driving shaft sliding freely, is supported on the 2nd bearing portion of described countershaft sliding freely, and, described the 2nd bearing portion has main part, be provided on this main part and with the sliding part of described countershaft sliding contact
Described sliding part is the member different with described main part and is formed by resin material, and be formed with fitting portion facing on the inner face of countershaft of described main part, this fitting portion is along extending with described countershaft quadrature and towards the direction parallel with the record surface of described CD, at the chimeric described sliding part of this fitting portion.
2. optical take-up apparatus as claimed in claim 1 is characterized in that described main part is formed by metal material.
3. optical take-up apparatus as claimed in claim 2 is characterized in that, forms dovetail groove on described fitting portion, and it is chimeric that described main part and described sliding part can utilize dovetail shaped to combine to carry out.
4. optical take-up apparatus as claimed in claim 2 is characterized in that, forms the dihedral hole on described fitting portion, and it is chimeric that described main part and described sliding part utilize dihedral to combine to carry out.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003142055A JP2004348794A (en) | 2003-05-20 | 2003-05-20 | Optical pickup device |
| JP2003142055 | 2003-05-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1551204A CN1551204A (en) | 2004-12-01 |
| CN1284176C true CN1284176C (en) | 2006-11-08 |
Family
ID=33530251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410045653 Expired - Fee Related CN1284176C (en) | 2003-05-20 | 2004-05-20 | Optical pickup device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2004348794A (en) |
| CN (1) | CN1284176C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4163708B2 (en) | 2005-09-29 | 2008-10-08 | 東芝サムスン ストレージ・テクノロジー株式会社 | Optical pickup device and optical disk device using the same |
| JP2007242168A (en) | 2006-03-10 | 2007-09-20 | Tdk Corp | Optical head and optical recording and reproducing device |
-
2003
- 2003-05-20 JP JP2003142055A patent/JP2004348794A/en active Pending
-
2004
- 2004-05-20 CN CN 200410045653 patent/CN1284176C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1551204A (en) | 2004-12-01 |
| JP2004348794A (en) | 2004-12-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061108 |