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Disk drive apparatus

A drive device and disk technology, applied in the direction of rotation vibration suppression, information recording on the disk, poor vibration/sound insulation/absorption, etc., can solve the problem of poor vibration resistance, shock resistance, and shaft loss torque Increase, bearing damage, etc.

Inactive Publication Date: 2009-06-03
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, if the rigidity of the junction between the chassis base 6 and the main base 8 is increased in this way, there is a problem that, on the contrary, when vibration or impact from the outside of the device acts on the disk drive device, the vibration or impact will be directly transmitted. On the chassis base 6 on which the disk 1 and the read / write head 3 etc. are installed, stable recording or playback cannot be performed, that is to say, the vibration resistance and impact resistance of the device become poor.
[0016] In addition, there is another problem that the vibration of the chassis base 6 caused by the unbalanced force F is transmitted to the outside of the disk drive device through the main base 8, etc., and has a bad influence on other equipment in the computer device in which the disk drive device is assembled.
[0017] In addition, due to the unbalanced force F, a large lateral pressure is applied to the bearing of the main shaft motor 2, resulting in an increase in shaft loss torque and damage to the bearing, which shortens the life of the bearing.

Method used

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Examples

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no. 1 example 》

[0234] A disk drive device according to a first embodiment of the present invention will be described below with reference to the drawings.

[0235] 1 is a side sectional view showing the vicinity of a spindle motor 2 in a disk drive device according to a first embodiment of the present invention. figure 2 It is a plan cross-sectional view showing only the hollow annular portion 23 which is the annular rail portion rotatably provided with the rotor 80 in the first embodiment of the present invention. image 3 In order to illustrate the effect of the disk drive device in the first embodiment of the present invention, the measured values ​​of the vibration acceleration of the chassis base 6 are given.

[0236] In the disk drive device of the first embodiment, the disk 1 mounted on the turntable 110 is configured to be rotationally driven by the spindle motor 2, and data is read or written by a head (not shown). Moreover, the disc drive device of the first embodiment, as descri...

no. 2 example 》

[0298] A disk drive device according to a second embodiment of the present invention will be described below with reference to the drawings. FIG. 4 is a side sectional view showing the surroundings of the spindle motor 2 in the disk drive apparatus according to the second embodiment of the present invention. In addition, the same reference numerals are attached to the components that are substantially the same as those in the disk drive apparatus of the first embodiment shown in FIG. 1 above, and the descriptions of the previous embodiments are referred to to omit repeated descriptions.

[0299] The disk drive device of the second embodiment of the present invention is the same as the above-mentioned first embodiment, and has a hollow ring portion 23, which is a ring-shaped track portion having a ring-shaped passage for accommodating a ball 24 inside. In the disk drive device of the second embodiment, if the recording surface of the disk 1 held on the turntable 110 is used as ...

no. 3 example 》

[0322] A disk drive device according to a third embodiment of the present invention will be described below with reference to the drawings. FIG. 5 is a side sectional view showing the surroundings of the spindle motor 2 in the disk drive apparatus according to the third embodiment of the present invention. In addition, the components that are substantially the same as those in the disk drive apparatus of the first and second embodiments described above are given the same reference numerals, and the descriptions of the previous embodiments are referred to to omit repeated descriptions.

[0323] In the disk drive device according to the third embodiment of the present invention, as shown in FIG. 5, a ball balancer 22a is formed to rotate integrally with the rotor 80 of the spindle motor 2, as in the above-mentioned first embodiment. The ball balancer 22a has the following configurations: a hollow annular portion 23 that has an annular passage coaxially provided with the main sha...

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Abstract

The present invention is intended to provide a disk drive apparatus capable of suppressing the occurrence of undesirable vibration due to the imbalance of a disk and capable of carrying out high-rate transfer, wherein a balancer is formed so as to accommodate a predetermined number of spherical bodies in a ring-shaped track portion having a predetermined shape, and this balancer is provided so as to be rotatable integrally and coaxially with the disk. In addition, in the disk drive apparatus of the present invention, the ring-shaped track of the balancer is divided into plural tracks by partition walls or the like, and a ball used as a balance member is disposed so as to be movable on each divided track. Furthermore, the disk drive apparatus of the present invention is configured so that the disk is held on both sides or one side thereof by using four or more projections or rubber sheets.

Description

[0001] This application is a divisional application of the invention patent application with the filing date of September 21, 1998, the application number of 98809374.X, and the invention title of "disk drive device". technical field [0002] The present invention relates to a disc drive device capable of stably recording or reproducing by suppressing unwanted vibration or noise caused by unbalanced recording medium discs. Background technique [0003] In recent years, in a disk drive device for recording and reproducing data, the rotation speed of the disk has been further increased in order to increase the data transfer speed. For example, in a CD-ROM disk drive device, its rotational speed can be increased from the existing 5000 rpm to more than 6000 rpm. Such a trend is not only reflected in half-height disk drive devices for desktop computers, but also in thin disk drive devices for notebook computers. [0004] However, there are the following situations in the disc, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B17/028G11B33/08F16F15/14G11B19/20
Inventor 正木清三原和博吉田修一仲昭行福山三千雄浦山德昭菊川正明丸冈诚大林伸一郎
Owner PANASONIC CORP