KR20090041935A - Turntable of spindle motor - Google Patents
Turntable of spindle motor Download PDFInfo
- Publication number
- KR20090041935A KR20090041935A KR1020070107735A KR20070107735A KR20090041935A KR 20090041935 A KR20090041935 A KR 20090041935A KR 1020070107735 A KR1020070107735 A KR 1020070107735A KR 20070107735 A KR20070107735 A KR 20070107735A KR 20090041935 A KR20090041935 A KR 20090041935A
- Authority
- KR
- South Korea
- Prior art keywords
- turntable
- disk
- circumferential surface
- coupling pipe
- spindle motor
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/02—Details
- G11B17/022—Positioning or locking of single discs
- G11B17/028—Positioning or locking of single discs of discs rotating during transducing operation
- G11B17/0282—Positioning or locking of single discs of discs rotating during transducing operation by means provided on the turntable
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
Landscapes
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Abstract
Description
1A and 1B are cross-sectional views of a turntable of a conventional spindle motor.
2 is a cross-sectional view of a spindle motor employing a turntable according to an embodiment of the present invention.
3A is a perspective view of the turntable shown in FIG. 2.
3B is a cross-sectional view taken along the line “A-A” of FIG. 3A.
4 is a cross-sectional view of a turntable according to another embodiment of the present invention.
Explanation of symbols on the main parts of the drawings
110: base 120: bearing housing
130: bearing 140: rotating shaft
150: stator 160: rotor
170: turntable 171: coupling pipe
173: Table 175: Claw
177: contact protrusion
The present invention relates to a turntable of a spindle motor.
The spindle motor functions to rotate the disk so that a linearly moving optical pickup can read the data recorded on the disk.
The disk is fixed to the turntable, which is formed with a claw which supports the center of the disk to coincide with the center of the rotation axis. The claws are of an Umbrella type whose end faces downward of the turntable and an Under Rib type whose end faces upward of the turntable.
A conventional turntable in which an under rib claw is formed will be described with reference to FIGS. 1A and 1B. 1A and 1B are cross-sectional views of a turntable of a conventional spindle motor.
As shown in FIG. 1A, the
The
The distance from the center of the
However, in the conventional spindle motor as described above, due to the eccentricity of the inner diameter of the
The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to provide a turntable of the spindle motor that can improve the reliability by configuring to match the center of the disk and the center of the rotation axis accurately Is in.
In the spindle motor according to the present invention for achieving the above object, in the spindle motor having a rotary table, a turntable coupled to the rotary shaft to rotate integrally with the rotary shaft, the disk is mounted and supported;
The turntable, the inner circumferential surface is coupled to the rotary shaft and the outer circumferential surface is coupled to the inner peripheral surface of the disk coupling support; A table extending outward from an outer circumferential surface of the coupling pipe to mount the disk; One end side is formed integrally with the table, and the other end side is elastically having a connecting bar located on the outer peripheral surface side of the coupling pipe and a vertically extending from the other end of the connecting bar, and having a support bar on which the inner circumferential surface of the disk is in contact and supported. A plurality of claw (Claw) having a; And means for preventing the claw from being pushed by the disk to the coupling side more than a predetermined time.
Hereinafter, a turntable of a spindle motor according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.
2 is a cross-sectional view of a spindle motor employing a turntable according to an embodiment of the present invention.
As shown, the cylindrical bearing
Hereinafter, in referring to the surfaces of the components, the surface facing upward in the vertical direction of the
The
The
Thus, when a current is applied to the
The
The lower surface of the bearing
A ring-
On the outer circumferential surface of the rotating
The
As shown, the
The
The table 173 extends radially outward of the
The
One end of the connecting
When the
Since an eccentricity exists in the inner diameter of the
The
The means is provided with a
4 is a cross-sectional view of a turntable according to another exemplary embodiment of the present invention, and only the difference from FIG. 3B will be described.
As shown, the
As described above, in the turntable of the spindle motor according to the present invention, when the claw is pushed to the center side of the turntable more than a predetermined time due to the eccentricity of the disc inner diameter, the contact protrusion formed in the claw contacts the outer circumferential surface of the coupling pipe, so that the claw is turned table. It is not pushed more than the predetermined side to the center side. Therefore, since the inner circumferential surface of the disk is uniformly elastically supported by the plurality of claws, the center of the disk coincides with the center of the turntable. This makes it possible to record information in the correct portion of the disc and to accurately reproduce the desired information from the disc, thereby improving the reliability of the product.
In the above, the present invention has been described in accordance with one embodiment of the present invention, but those skilled in the art to which the present invention pertains have been changed and modified without departing from the spirit of the present invention. Of course.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070107735A KR20090041935A (en) | 2007-10-25 | 2007-10-25 | Turntable of spindle motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070107735A KR20090041935A (en) | 2007-10-25 | 2007-10-25 | Turntable of spindle motor |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20090041935A true KR20090041935A (en) | 2009-04-29 |
Family
ID=40764875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020070107735A KR20090041935A (en) | 2007-10-25 | 2007-10-25 | Turntable of spindle motor |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20090041935A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012093870A2 (en) * | 2011-01-05 | 2012-07-12 | 주식회사 삼홍사 | Spindle motor |
-
2007
- 2007-10-25 KR KR1020070107735A patent/KR20090041935A/en not_active Application Discontinuation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012093870A2 (en) * | 2011-01-05 | 2012-07-12 | 주식회사 삼홍사 | Spindle motor |
WO2012093870A3 (en) * | 2011-01-05 | 2012-11-29 | 주식회사 삼홍사 | Spindle motor |
US9287748B2 (en) | 2011-01-05 | 2016-03-15 | Samhongsa Co., Ltd. | Spindle motor |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |