JP2001243686A - Disk attaching device for disk related testing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk attaching device capable of eliminating the trouble of replacing a disk in a disk related testing device. SOLUTION: A spindle motor is provided with an adapter for facilitating the attaching/detaching of a disk holder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a disk mounting apparatus of a disk-related test apparatus for testing a disk such as a hard disk or a disk-related mechanism such as a magnetic pickup mechanism for the disk.

[0002]

2. Description of the Related Art An example of a disk-related test apparatus is as follows.
There is an apparatus as shown in FIG. This apparatus measures the vibration of the disk 20 by irradiating a laser beam from a laser Doppler vibrometer (LDV) 1 while the disk 20 attached to the spindle motor 10 is rotated, and measures the vibration of the disk 20 from this vibration state. Is measured, and whether or not there is unevenness in rotation of the spindle motor 10 or the like is measured. Further, in this case, although not shown, there is an apparatus that irradiates the pickup (information reading unit) with the laser beam 2 to the disk 20 and determines whether the pickup is correct or not based on the vibration state of the pickup.

In such a disk-related test apparatus, a disk 2 attached to a spindle motor 10
It is often necessary to replace 0. In the conventional disk mounting device of this type of device, the replacement is troublesome.

FIG. 3 shows a conventional disk mounting device. The disk 20 is a spindle motor 20
Is fitted into the protruding part (rotating part). Next, a collar 30 for fixing the fitted disc 20 is fitted,
Finally, the holding plate 40 is screwed to the upper end of the spindle motor 10, and the disk 20 is mounted via the collar 30.

Generally, a plurality of screw holes 11, 12,... (Six in FIG. 3) are provided at the upper end of the spindle motor 10, Are provided. Therefore, in order to replace the disk 20, the holding plate 4
It was necessary to remove all the set screws 61 evenly or screw them in evenly. Also, in this case, the set screw 61 is small and thin in general, and the screw hole of the spindle motor 10 may be clogged due to a broken screw or the like, so that the spindle motor 10 itself may become unusable.

[0006]

As described above, in the conventional disk mounting apparatus, the work of tightening and loosening the small and thin screws must be performed each time the disk is replaced, so that it is troublesome and requires carefulness. There was an inconvenience. The present invention has been made to improve this point.

[0007]

For this reason, in the present invention, the spindle motor is provided with an adapter for easily attaching and detaching the disk holder.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The adapter has a fixing structure for easily attaching and detaching a disk holder, and has a structure to be attached to a spindle motor with a plurality of set screws. Thus, it is only necessary to attach / detach the disk holder from the adapter when attaching / detaching the disk.

[0009]

FIG. 1 is a structural explanatory view showing an apparatus according to an embodiment of the present invention. At the upper end of the spindle motor 10, a plurality of screw holes 11 to 16 are provided as in the related art. The adapter 70 is provided with screw locking portions 71 to 76 corresponding to the plurality of screw holes 11 to 16 of the spindle motor 10. These screw locking portions 71 to 76 of the adapter 70
The adapter 70 is attached to the spindle motor 10 by tightening the screw holes 11 to 16 of the spindle motor 10 with set screws 61.

Here, the screw locking portions 71-71 of the adapter 70
Each of the reference numerals 76 is formed relatively deep so that a predetermined space is formed above the set screw 61 when the set screw 61 is tightened. In addition, a screw hole 77 having a diameter larger than each of the screw locking portions 71 to 76 is provided in the center of the adapter 70.

Next, with the adapter 70 attached to the spindle motor 10, the disk 20 is inserted. Then, a cap 80 as a disk holder is covered, and the cap 80 is attached to the adapter 70 with a set screw 97 larger than the set screw 61.

A collar 81 is provided around the cap 80 to press the disk 20 beyond the protrusion of the spindle motor 10. Further, pins 82 and 83 projecting downward are provided on the inner surface of the upper end of the cap 80. The pins 82 and 83 are engaged with the space portions of the screw locking portions 71 to 76 of the adapter 70 (in the illustrated example, two pins 82 and 83 are provided to engage with the diagonal screw locking portions). ) To act as a stopper for the cap 80.

Therefore, the cap 80 is connected to the adapter 70
The cap 80 is twisted when it is fixed to the
After fitting 3 into the screw locking portion of the adapter 70, it may be fixed with a set screw 97. In addition, the spindle motor 10 shown in FIG.
The zero collar 81 need only have the function of fixing the disk 20.

[0014]

As described above, the disk 20 can be replaced simply by removing the cap 80. Moreover, in this case, it is only necessary to remove one large-diameter set screw 97, and the workability is remarkably improved.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory view showing a disk mounting device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of use of a disk mounting device.

FIG. 3 is a configuration explanatory view showing a conventional disk mounting device.

[Explanation of symbols]

 10: Spindle motor 20: Disk 70: Adapter 80: Cap

Claims (1)

[Claims] 1. A disk mounting apparatus for a disk-related test apparatus for removably mounting the disk 20 for testing a disk 20 main body or a mechanism related to the disk. And an adapter 70 having a fixing structure for detachably fixing the disk holder 80, and the disk 2 mounted on the spindle motor 10.
0 is detachable by attaching and detaching the disk holder 80 to and from the adapter 70.