CN1383253A - Mainshaft motor and its mfg. method - Google Patents
Mainshaft motor and its mfg. method Download PDFInfo
- Publication number
- CN1383253A CN1383253A CN 02118026 CN02118026A CN1383253A CN 1383253 A CN1383253 A CN 1383253A CN 02118026 CN02118026 CN 02118026 CN 02118026 A CN02118026 A CN 02118026A CN 1383253 A CN1383253 A CN 1383253A
- Authority
- CN
- China
- Prior art keywords
- turntable
- hot melt
- melt adhesive
- adhesive stick
- spindle motor
- 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
Links
Images
Landscapes
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Rotational Drive Of Disk (AREA)
- Brushless Motors (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The present invention provides a spindle motor and its manufacturing method. The object of the invention is to obviate a high cost process like accurately cutting a turn table, and to easily secure the right angle of a metal turn table against a shaft. The spindle motor is provided with the turn table 2 for supporting a disc and the shaft 1 which is so attached to the turn table as to maintain the right angle against the disc placing face of the turn table 2, and rotatably supports the shaft. The disc placing face of the turn table 2 is glued with a hot melt (or foamed urethane) 3 on its outer peripheral side. The disc placing side face of the hot melt 3 is flattened and cured to maintain the right angle against the shaft 1.
Description
Technical field
The present invention relates to a kind of Spindle Motor And Its Preparation Method that sound equipment, image, information instrument use with disc drives such as CDs that is used for.
Background technology
The rotating driving device of driving CD etc. is to be made of the Spindle Motor that turntable is supported in the turntable and the rotation of supports disc freely.In the rotating driving device of this CD, when quivering, the face of disc will take place to vibrate mistake when increasing, and be difficult to correctly recognition data or write data.On the other hand, corresponding with the densification of recording medium in recent years, the spacing that is recorded between the data on the disc is more and more littler, has the tendency of the rotation high speed of disc simultaneously.Therefore, also strict more to the requirement of the surface uniformity of disc.
Fig. 5 represents that known in the past disc drives is with Spindle Motor (opening flat 10-145997 communique with reference to the spy).The material of turntable 2 is a resin, makes axle 1 and rotor yoke 13 etc. integrated by inserting to be shaped.And, have at the central part of turntable 2 and to have applied magnetized fastening magnet 6, on its peripheral part, be fitted with the slip that the big rubber system ring-type sheet material 11 of coefficient of friction prevents CD.Insert on the rotor yoke 13 to be adhesively fixed with to have applied and specify magnetized rotor magnet 14.
Like this, illustrated prior art is to be shaped as one by axle 1 is inserted with rotor yoke 13 grades, guarantees the squareness of axle 1 and turntable 2, and makes fixation, the reliability height.
But, owing to be the turntable 2 that inserts shaping resin system, thus the complex structure of mould not only, the cost height, and have the long problem of required time that is shaped.And, because turntable 2 is resins, might Yin Wendu, various reasons such as humidity, load and being out of shape.In addition,, will increase thickness, have the problem that is difficult to slimming in order to ensure the intensity of turntable.For prevent disc slide will adhesive rubber etc. miscellaneous part, but on turntable the unusual difficulty of adhesive rubber equably.
Fig. 6 represents that the in the past known disc drives different with Fig. 5 is with Spindle Motor (spy opens flat 11-356023 communique).The rotor of this motor is made of by being pressed into axle 1 rotor case of installing 12 and being pressed into fixing ring-type rotor magnet 14 in the inboard of this rotor case 12 axle 1 that can directly be installed in freely to rotate on the pedestal 16.On the periphery of rotor case 12 upper surfaces that play the turntable effect, be formed with medium placement section 15.After being pressed into such rotor case 12 on the axle 1,, make the perpendicularity of axle by being that benchmark carries out cut to medium placement section 15 with this axle 1.Then, the antirust rubber-like coating of coating double as forms non-skid film on this medium placement section.
Like this, illustrated prior art will be carried out cut with the axle benchmark to turntable in order to ensure the axle perpendicularity after having assembled axle and turntable, but this cut expends time in adding man-hour, becomes the high reason of cost.In addition, anti-skidding for disc wanted miscellaneous parts such as adhesive rubber, therefore, and the unusual difficulty of adhesive rubber equably on turntable.
Summary of the invention, the present invention proposes in order to address the above problem, and its purpose do not need to be the such expensive operation of cutting rotary flatform accurately, can easily guarantee the squareness of metallic turntable and axle.
And, the objective of the invention is to, do not need the thickness management of slip-proofing device, needn't make excessive demands high accuracy to each parts, and needn't strictness carry out process management, finally can obtain the high-precision squareness of axle and turntable.
In addition, the present invention also aims to, even a kind of imbalance that has rotor or turntable around rotating shaft is provided, also can be to its device that compensates.
Spindle Motor of the present invention be a kind of turntable with supports disc and keep with the disc putting surface of this turntable for being installed in the axle on this turntable squarely, and this Spindle Motor is supported in rotation freely.On the disc putting surface of above-mentioned turntable, bonding hot melt adhesive stick or expanded polyester on outer Monday side.Then, with keep with above-mentioned axle be the mode at right angle, the disc loading side surface planarization ground of this hot melt adhesive stick or expanded polyester is solidified.
The manufacture method of Spindle Motor of the present invention is after being assembled into one with above-mentioned axle at least with above-mentioned turntable, on the disc putting surface of above-mentioned turntable, in outer Monday side coating hot melt adhesive stick or expanded polyester, simultaneously the part that has applied hot melt adhesive stick or expanded polyester on this turntable is heated.Then, with keep with above-mentioned axle be the mode at right angle, the low temperature contact-making surface that temperature is lower than the softening temperature of above-mentioned hot melt adhesive stick or expanded polyester presses against on this hot melt adhesive stick or the expanded polyester and is cured.Afterwards,, be formed flatly the disc loading side surface of this hot melt adhesive stick or expanded polyester, be the right angle so that keep with above-mentioned axle by this contact-making surface is separated from above-mentioned hot melt adhesive stick or expanded polyester.
The present invention does not need the such expensive operation of cutting rotary flatform accurately by adopting the technology that applies hot melt adhesive stick or expanded polyester on metal turntable, can easily guarantee the squareness of metal turntable and axle.In addition, the present invention has also gone for having formed in the external-rotor-type brushless spindle motor of medium placement section on the end face periphery of rotor case of turntable effect.
And the present invention can not need the thickness management of slip-proofing device.
And the present invention can remove the operation of this difficulties of slip-proofing device such as attaching, adhesive rubber equably.
And the present invention needn't make excessive demands high accuracy to each parts, and needn't strictness carry out process management, finally can obtain high-precision squareness.
In addition, even existence is around the imbalance of rotating shaft on rotor or turntable, the present invention also has can compensate its unbalanced effect.
Description of drawings
Fig. 1 is the stereogram of the brushless spindle motor of inner-rotor type.
Fig. 2 is the stereogram that only rotor of Spindle Motor shown in Figure 1 is taken out expression.
Fig. 3 is the accompanying drawing that is used to illustrate the magnetic loop of Spindle Motor shown in Figure 1.
Fig. 4 is the cutaway view that cuts off rotor with patrix along A-A ' line among Fig. 2.
Fig. 5 is the accompanying drawing of the known in the past disc drives of expression with Spindle Motor.
Fig. 6 uses the accompanying drawing of Spindle Motor for the expression known in the past disc drives different with Fig. 5.
The stereogram of Magnmet rotor when Fig. 7 is applicable to the outer-rotor brushless Spindle Motor for the present invention.
The cutaway view of rotor when Fig. 8 is applicable to the outer-rotor brushless Spindle Motor for the present invention.
Embodiment
Below, according to illustration the present invention is illustrated.Fig. 1 is the stereogram of inner-rotor type brushless spindle motor, and Fig. 2 only takes out the stereogram that amplifies expression with the rotor of its Spindle Motor, Fig. 3 is the accompanying drawing that is used to illustrate the magnetic loop of this Spindle Motor, is the diagram of having omitted turntable etc.Fig. 4 is the accompanying drawing that is used to illustrate the method for the device of making the squareness that obtains turntable.Rotor is to represent with cutaway view.
Before the structure as the turntable of feature of the present invention was described, the spinning movement to illustrative Spindle Motor self earlier was illustrated, and can be that the applicant is special be willing to 2000-111533 number in the such structure of first to file to the Spindle Motor of this structure.
Illustrated brushless spindle motor be axle 1 be bearing in be installed on base 9 or with the integrally formed bearing maintaining part (not shown) of base 9 on, and the cardinal extremity pivot suspension of axle 1 is on the bearing (not shown) of high sliding.A plurality of (example illustrates 2 among Fig. 3) main magnet 22,22 ' is installed in outer Monday of main yoke 21 (Fig. 4) on the side, and it is the N utmost point that a side main magnet 22 is magnetized into outer peripheral face, and the opposing party's main magnet 22 ' is the S utmost point (Fig. 3).On this main magnet 22, outer Monday of 22 ' side, armature is installed with radially leaving the space.In illustrated embodiment, armature is 3 electrode structures, is made of with parts the coil and the magnetic flux path that are wound on 3 pivots 28 that are installed on the base 9.3 coils can axle 1 dispose for the center symmetrically, but also have the illustrated embodiment of resembling in order to make being shaped as of motor integral body any and configurable in limited space and asymmetricly dispose.And in order to make the motor slimming, the axis of each coil disposes vertically.
Each magnetic flux path that is made of soft magnetic material with parts as shown in Figure 3, by each coil configuration, respectively by top plate-like portion 25, be positioned at coil central authorities, link this top plate-like portion 25 and also as the binding parts 26 of the base 9 of magnetic material, with combine with top plate-like portion 25, simultaneously via ground, space and main magnet 22,22 ' relative to cylindrical portion 27 formations.The main magnet 22 of the N utmost point be with relative with the cylindrical portion 27 of figure central authorities to the time be example, with reference to Fig. 3 magnetic flux path is described.The magnetic flux that produces in the main magnet 22 enters in the cylindrical portion 27 by the space.Then, magnetic flux enters the binding parts 26 from top plate-like portion 25 shown in figure arrow F2, is branched off into 2 tunnel, one side shown in arrow F4 below binding parts 26, and the opposing party enters in the adjacent binding parts 26 by base 9 respectively shown in arrow F6.Begin from here,, return the opposing party's main magnet 22 ' via cylindrical portion 27 from top plate-like portion 25 by the path shown in arrow F5 or the F7.The motor of this structure is by constituting the bending for several times of the three-dimensional ground of magnetic flux, and the volume direction size ground that can not increase coil portion increases winding number, can obtain high output torque.
Below, with reference to Fig. 2, Fig. 4 the rotor structure that comprises turntable structure as feature of the present invention is illustrated.Fig. 4 is the cutaway view that cuts off rotor with patrix 23 along A-A ' line among Fig. 2.Metal turntable 2 is by pressure processing, and central authorities have the hole, is pressed into axle 1 in it.On the bottom surface of this turntable 2, be fixed with the end face of main yoke 21, and on the outer peripheral face of its side surface part, be fixed with main magnet 22,22 ' with cylindric side surface part.In addition, be fixed with on the end face central portion of turntable 2 and transfer core spring 4, fastening yoke 5 and fastening magnet 6 are configured for the mechanism of fixing disc.By the rotor mechanism and the CD installing mechanism that are used to drive above-mentioned CD etc. itself is known, so omit its detailed description.
After in the operation of assemble rotor, as described later, suppress the mechanism that the face in the disc rotation quivers owing to be equipped with, so the axle 1 in this stage and the squareness of turntable 2 do not need very high precision, therefore, the hole of installation shaft 1 usefulness or disc putting surface need not carry out cut on turntable 2, can be undertaken by aforesaid pressure processing.Therefore, can reduce manufacturing cost.
After having assembled rotor like this, will become the hot melt adhesive stick that suppresses the mechanism that the face in the disc rotation quivers or expanded polyester 3 and make its upper surface 7 smooth and be bonded in outer Monday of side on the end face (disc putting surface) of turntable 2.In addition, the planarization of end face 7 needs not to be smooth even surface, as long as disc can be remained with axle 1 ground that meets at right angles smoothly on the whole, exists tiny concavo-convex also harmless from the teeth outwards.As long as this hot melt adhesive stick or expanded polyester 3 is continuous for ring-type, or separating appointed interval like that and can suitably keep the shape of disc discontinuously as seen in Figure 2 then can be arbitrarily.And, be not for axial symmetry or equally spaced be provided with.This is in order to measure rotor or the turntable imbalance around rotating shaft, and it is compensated is provided with.
Hot melt adhesive stick or expanded polyester itself are the known materials that belongs to thermoplastic resin.This hot melt adhesive stick or expanded polyester have and are easy to and warm material adhesive, and are difficult for the character with cool material adhesive.In addition, be easy to promptly solidify after the cooling of hot melt adhesive stick or expanded polyester, can lightheartedly mold its shape, and, under the state that solidifies, preventing to have sufficient frictional force on the function of sliding with respect to disc.
Because expanded polyester also has the character identical with the hot melt adhesive stick, can in identical operation, carry out bonding, so, below be that example describes with the hot melt adhesive stick.As affixed operation, the first, by nozzle etc. with the hot melt adhesive stick with ring-type or separate on the assigned address of end face outer circumferential side that appointed interval is coated in turntable 2 discontinuously temporarily.In addition, though the hot melt adhesive stick itself is warm, because turntable is a normal temperature, so the hot melt adhesive stick solidifies along with coating and be bonding securely.
The second, the part that has applied the hot melt adhesive stick on the turntable is heated to for example 50 ℃～200 ℃.This can for example be placed on the thermal source by the downside with the turntable outer circumferential side and contact with it and carry out.Therefore, the hot melt adhesive stick is being fixed on the turntable after the cooling reliably.In addition, though also can on the turntable that has heated, apply the hot melt adhesive stick, carry out the advantage that coating tool has simplified apparatus on the turntable before heating like that by above-mentioned.
The 3rd, as shown in Figure 4, rotor is moved to the below of patrix 23, the contact-making surface 24 that temperature specific heat is melted the low patrix 23 of the softening temperature of adhesive presses against on the hot melt adhesive stick of the state of being heated.Therefore, cooling of hot melt adhesive stick and curing.
And, when pushing, can on hot melt adhesive stick end face 7, set up the big parts of coefficient of friction, or process in order to improve coefficient of friction.This can be for example by be provided with on the contact-making surface 24 micropore or microspike etc. concavo-convex and with its hot melt adhesive stick end face 7 that is solidifying accordingly on small concavo-convex etc. carrying out is set.Small concavo-convex coefficient of friction, attraction, the absorption disc of improving on the end face 7 of hot melt adhesive stick.Perhaps, before the pushing contact-making surface 24, the big parts of coefficient of friction that for example rubber is such are placed on the end face 7 of hot melt adhesive stick of dissolving and carry out.Therefore, can be by the hot melt adhesive stick adhering components that turntable and coefficient of friction is big, be fixed together, and, because the surface and the patrix 23 of the big parts of coefficient of friction match, so can be vertically formed on axle.
Though the temperature of patrix 23 is as long as promptly enough below the softening temperature of hot melt adhesive stick, under for example normal temperature, but under situation about making continuously on the production line, because temperature rises the temperature of the contact-making surface 24 of patrix 23 gradually by contacting with the turntable that has heated, so preferably cool off.And, though be cooling, since fast than the cooling of hot melt adhesive stick, so the activity duration is short.Then, when pushing,, be easy on hot melt adhesive stick end face 7, form and 1 rectangular on axle by the axle 1 of rotor and the contact-making surface 24 of patrix 23 are remained on the right angle state accurately.And the hot melt adhesive stick 3 after the pushing then will excise it if extrude from turntable 2 in large quantities.But by experiment or the experience of test, suitably set the coating position, coating amount in above-mentioned interim coating stage and the conditions such as final suitable depth after the pushing, can make the hot melt adhesive stick outstanding.
The 4th, patrix 23 is peeled off from hot melt adhesive stick 3.Hot melt adhesive stick 3 is owing to having aforesaid character, so the part that hot melt adhesive stick 3 is bonded on the metal turntable 2 is easy to separate from the contact-making surface 24 of patrix 23.
More than, the situation as rotor affixed hot melt adhesive stick after assembling is illustrated, but the present invention can adopt expanded polyester too.And, because the present invention is to be the benchmark squareness that obtains turntable with the axle, so at least applicable to having assembled after turntable and the axle.For example, after having assembled motor shown in Figure 1, can affixed this hot melt adhesive stick or expanded polyester.In addition, with reference to Fig. 7 and Fig. 8, as mentioned above, also go in the outer-rotor brushless Spindle Motor.
The stereogram of the Magnmet rotor when Fig. 7 is applicable to the outer-rotor brushless Spindle Motor for the present invention, and Fig. 8 represents the cutaway view of motor.The rotor of this motor is made of by the ring-type rotor magnet 14 that is pressed into this 1 rotor case of installing 12 and be pressed on the inboard that is fixed on this rotor case 12 axle 1 that can directly be installed in freely to rotate on the axle retainer that is fixed on the base 9.Play on the periphery of end face (disc putting surface) of the rotor case 12 of turntable effect and form the medium placement section.This outer-rotor brushless Spindle Motor that the medium placement section is set on the end face of rotor case itself is owing to be for example with reference to the common motor shown in the prior art of Fig. 6 explanation, so omit its explanation.
On the medium placement section of this form, also be applicable to technology of the present invention,, its planarization ground solidified, can easily guarantee squareness with the axle of disc putting surface by bonding hot melt adhesive stick (or expanded polyester) 3.The same with aforesaid example, can after having assembled turntable and axle, be suitable at least, for example, promptly applicable after the assembling of motor finishes.
Claims (12)
1. Spindle Motor, have the turntable of supports disc and keep with the disc putting surface of this turntable for being installed in the axle on this turntable squarely, and rotation supports this axle freely, it is characterized in that,
On the disc putting surface of above-mentioned turntable, bonding hot melt adhesive stick or expanded polyester on outer Monday side,
The disc loading side surface planarization ground of this hot melt adhesive stick or expanded polyester is solidified, be the right angle so that keep with above-mentioned axle.
2. Spindle Motor according to claim 1 is characterized in that, above-mentioned hot melt adhesive stick or expanded polyester are to form to devices spaced apart continuously or discontinuously annularly.
3. Spindle Motor according to claim 1 is characterized in that, above-mentioned hot melt adhesive stick or expanded polyester form around the imbalance of rotating shaft in order to compensate rotor or turntable.
4. Spindle Motor according to claim 1 is characterized in that, sets up the big parts of coefficient of friction on the disc loading side surface of above-mentioned hot melt adhesive stick or expanded polyester, or processes for improving coefficient of friction.
5. Spindle Motor according to claim 1 is characterized in that, said motor is an inner rotor type motor.
6. Spindle Motor according to claim 1 is characterized in that, said motor is an outer rotor-type motor, and the disc putting surface of rotor case plays above-mentioned turntable.
7. the manufacture method of a Spindle Motor, described motor have the turntable of supports disc and keep with the disc putting surface of this turntable for being installed in the axle on this turntable squarely, and rotation supports this axle freely, it is characterized in that,
After above-mentioned turntable is assembled into one with above-mentioned axle at least, on the disc putting surface of above-mentioned turntable,, simultaneously the part that has applied hot melt adhesive stick or expanded polyester on this turntable is heated in outer Monday side coating hot melt adhesive stick or expanded polyester,
With keep with above-mentioned axle be the mode at right angle, the low temperature contact-making surface that temperature is lower than the softening temperature of above-mentioned hot melt adhesive stick or expanded polyester presses against on this hot melt adhesive stick or the expanded polyester and is cured.
Afterwards, with keep with above-mentioned axle be the mode at right angle, by this contact-making surface is separated from above-mentioned hot melt adhesive stick or expanded polyester, be formed flatly the disc loading side surface of this hot melt adhesive stick or expanded polyester.
8. the manufacture method of Spindle Motor according to claim 7 is characterized in that, above-mentioned hot melt adhesive stick or expanded polyester are to form to devices spaced apart continuously or discontinuously annularly.
9. the manufacture method of Spindle Motor according to claim 7 is characterized in that, above-mentioned hot melt adhesive stick or expanded polyester form around the imbalance of rotating shaft in order to compensate rotor or turntable.
10. the manufacture method of Spindle Motor according to claim 7 is characterized in that, sets up the big parts of coefficient of friction on the disc loading side surface of above-mentioned hot melt adhesive stick or expanded polyester, or processes for improving coefficient of friction.
11. the manufacture method of Spindle Motor according to claim 7 is characterized in that, said motor is an inner rotor type motor.
12. the manufacture method of Spindle Motor according to claim 7 is characterized in that, said motor is an outer rotor-type motor, and the disc putting surface of rotor case plays above-mentioned turntable.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001122062 | 2001-04-20 | ||
| JP122062/01 | 2001-04-20 | ||
| JP59970/02 | 2002-03-06 | ||
| JP2002059970A JP2003009482A (en) | 2001-04-20 | 2002-03-06 | Spindle motor and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1383253A true CN1383253A (en) | 2002-12-04 |
Family
ID=26613898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02118026 Pending CN1383253A (en) | 2001-04-20 | 2002-04-19 | Mainshaft motor and its mfg. method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2003009482A (en) |
| CN (1) | CN1383253A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102106061A (en) * | 2008-07-30 | 2011-06-22 | 罗伯特·博世有限公司 | Method for manufacturing an electrical machine and electrical machine for a hybrid vehicle |
| CN101521032B (en) * | 2008-02-29 | 2012-11-07 | 松下电器产业株式会社 | Base member, motor, and information apparatus, and manufacturing method thereof |
| CN111106722A (en) * | 2018-10-26 | 2020-05-05 | 发那科株式会社 | Method for manufacturing motor sheath with stator |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101101580B1 (en) * | 2010-06-30 | 2012-01-02 | 삼성전기주식회사 | Turntable for motor and method for producing the same |
| JP5708024B2 (en) * | 2011-02-24 | 2015-04-30 | トヨタ紡織株式会社 | Transformer |
| JP2012243370A (en) * | 2011-05-23 | 2012-12-10 | Nippon Densan Corp | Motor and disc drive |
-
2002
- 2002-03-06 JP JP2002059970A patent/JP2003009482A/en active Pending
- 2002-04-19 CN CN 02118026 patent/CN1383253A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521032B (en) * | 2008-02-29 | 2012-11-07 | 松下电器产业株式会社 | Base member, motor, and information apparatus, and manufacturing method thereof |
| CN102106061A (en) * | 2008-07-30 | 2011-06-22 | 罗伯特·博世有限公司 | Method for manufacturing an electrical machine and electrical machine for a hybrid vehicle |
| US8424186B2 (en) | 2008-07-30 | 2013-04-23 | Robert Bosch Gmbh | Method for manufacturing an electric machine by a lost foam casting process, and electric machine for a hybrid vehicle |
| CN111106722A (en) * | 2018-10-26 | 2020-05-05 | 发那科株式会社 | Method for manufacturing motor sheath with stator |
| CN111106722B (en) * | 2018-10-26 | 2024-05-10 | 发那科株式会社 | Method for manufacturing motor sheath with stator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003009482A (en) | 2003-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6240782B2 (en) | ||
| US5942820A (en) | Structure of spindle motor in a disk drive and method of assembling the disk drive | |
| JPH06295525A (en) | Disk drive spindle motor | |
| CN1383253A (en) | Mainshaft motor and its mfg. method | |
| CN102272839B (en) | Motor for use in a disk drive | |
| US20020113503A1 (en) | Spindle motor | |
| JP4035409B2 (en) | RECORDING DISK DRIVE DEVICE, TURN TABLE USED FOR THE SAME, AND MANUFACTURING METHOD THEREOF | |
| JPS62222475A (en) | Information storage medium | |
| JP2004265455A (en) | Manufacturing method of turntable device and turntable device | |
| JPH1125555A (en) | Turntable device of disk player and its manufacture | |
| EP1783762B1 (en) | Optical disk drive | |
| JP2001101741A5 (en) | Magnetic disk fixing method and magnetic disk support device | |
| JP2996805B2 (en) | Spindle motor | |
| JP3400258B2 (en) | Method of manufacturing magnetic disk chucking device | |
| JP2006079727A (en) | Optical disk drive unit | |
| CN1226061A (en) | Disc driving apparatus | |
| JP2001052401A (en) | Disk aligning device and disk driving motor equipped with the same | |
| JP2519676B2 (en) | Information processing device | |
| JPH0544919Y2 (en) | ||
| JPH0898452A (en) | Miniature motor | |
| JPH05316705A (en) | Disk rotating drive and its fabrication method | |
| JPS62167663A (en) | Information processor | |
| JPH06223446A (en) | Reel base for magnetic recording and reproducing device | |
| JPH10222905A (en) | Disk clamp mechanism of optical disk reproducing apparatus | |
| KR19990009902A (en) | Spindle Motors for Optical Discs |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Huayuan motor (Jiangsu) Co., Ltd. Assignor: Mabuchi Motor Co., Ltd. Contract fulfillment period: The period of performance of the contract is 2004-05-01 to the contract period Contract record no.: Contract filing No. 041000030097 Denomination of invention: Invention name spindle motor and manufacturing method thereof License type: License type general permission Record date: 20041022 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: COMMON LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT:2004-05-01 TO CONTRACT Name of requester: HUAYUAN MOTOR (JIANGSU) CO., LTD. Effective date: 20041022 |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: WD Ref document number: 1050084 Country of ref document: HK |