JPH0624057Y2 - Disco Cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a disk cartridge most suitable for detachably using a hard disk used as a data recording medium of a CPU, for example.

[Outline of device]

The present invention relates to a disk cartridge such as a hard disk drive in which a disk in the cartridge is mounted on a turntable at a center core hole provided in the cartridge, and the disk is rotated at a high speed by the turntable. By providing an air intake for introducing clean air on the side surface and a plurality of blades for exhausting the center core of the disk, when the disk rotates at high speed, clean air is introduced from the air intake to the center. It is designed to be discharged from the core hole to the outside of the cartridge.

[Conventional technology]

As a conventional example of a disk cartridge in which a hard disk is housed in the cartridge, for example, U.S. Pat.
There is 628 publication.

In this conventional example, a disc is rotatably housed in a cartridge, a center core of the disc is mounted on a turntable in a center core hole provided in the cartridge, and a head is inserted into a head insertion hole provided in the cartridge to turn the disc. It is a disk cartridge configured such that recording or reproduction of the disk is performed by a head while the disk is rotated at high speed in the cartridge by a table.

[Problems to be solved by the invention]

As is well known in the art, a hard disk uses a hard magnetic disk and enables ultra-high density recording of several tens of megabytes. On the other hand, even if submicron-order dust or the like adheres to the recording surface of the hard disk, the hard disk or head will be destroyed or a read error will occur in the head. Management is necessary.

In this respect, when the hard disk is housed in the cartridge as in the conventional example, the effect of preventing the adhesion of dust and the like is much higher than that in the case where the hard disk is used naked.

However, in this conventional example, since the dust and the like that accidentally intrudes into the cartridge during or after the assembling of the disc cartridge is difficult to be discharged to the outside of the cartridge, the high-speed rotation of the disc causes the inside of the cartridge to be removed. However, there is a problem that the dust and the like are easily scattered and adhere to the recording surface of the hard disk.

The present invention was devised to solve the above problems, and reliably discharges dust and the like in the cartridge from the center core hole of the cartridge to the outside of the cartridge as the disc rotates at high speed. The present invention provides a disc cartridge capable of performing the above.

[Means for solving problems]

This invention relates to the disk cartridge described in the above [Prior Art], which is provided on one side surface of the cartridge and has an air intake for introducing clean air from a tangential direction with respect to a rotation direction of the disk, and the center core. A plurality of blades provided on the outer peripheral portion on the lower surface side of the cartridge, and in the high-speed rotation of the disc, clean air is introduced into the cartridge from the air inlet and the air in the cartridge is The blade is configured to discharge from the center core hole in the rotation axis direction of the disk.

[Operation] According to the disc cartridge of the present invention, when the disc is rotated at a high speed in the cartridge, clean air is introduced into the cartridge from the air inlet, and
The air is discharged from the center core hole to the outside of the cartridge by a plurality of blades of the center core that are rotated at a high speed integrally with the disc. As a result, it is possible to reliably discharge dust and the like in the cartridge together with the discharged air from the center core hole of the cartridge to the outside of the cartridge.

〔Example〕

An embodiment of a disk cartridge according to the present invention will be described below with reference to the drawings. In this embodiment, the hard disk is stored in the cartridge.

First, in FIGS. 2 and 3, a hard disk 1 which is a hard magnetic disk is rotatably housed in a cartridge 2. The cartridge 1 comprises upper and lower halves 3 and 4 formed of synthetic resin, which are fixed to each other from above and below. A center core hole 6 facing a center core 5 made of metal or the like fixed to the central portion of the hard disk 1 is provided substantially in the central portion of the lower half 4, and one end portion 3a of the upper and lower halves 3 and 4 is provided. On the 4a side, a pair of upper and lower head insertion holes 8 and 9 are provided to be connected to each other at their one end portions 3a and 4a. The shutter 1 has a substantially U-shaped cross section and simultaneously opens and closes both head insertion holes 8 and 9 and an air intake 23 described later.
0 is attached to the cartridge 2.

The disc cartridge is constructed as described above, and when it is mounted horizontally in the disc player, the shutter 10 is opened, and the center core 5 of the hard disk 1 is placed in the center core hole 6 as shown in FIG. It is mounted horizontally on the turntable 12. At this time,
The center core 5 is fitted into the upper end of the spindle 14 at the center of the turntable 12 by the center hole 13, and is fixed onto the turntable 12 by the magnetic attraction force of the magnet 15 provided on the turntable 12.

On the other hand, by mounting the disk cartridge, a pair of upper and lower magnetic heads 1 as recording and reproducing heads shown in FIG.
6 is inserted into the cartridge 2 through both head insertion holes 8 and 9, and both magnetic heads 16 elastically contact both upper and lower recording surfaces 17 of the hard disk 1.

After the disk cartridge is mounted, the turntable 12 is driven to rotate integrally with the spindle 14 by a motor (not shown) at a high speed, so that the hard disk 1 is located at a substantially central position between the upper and lower halves 3 and 4 in the cartridge 2. Thus, it is rotationally driven at a high speed in the direction of arrow a in FIG. At the same time, both magnetic heads 16 are moved and operated in the radial direction of the hard disk 1, and the recording surfaces 17 of the hard disk 1 are selectively recorded or reproduced by the both magnetic heads 16. At this time, while the hard disk 1 is rotating at a high speed, both magnetic heads 16 that move relative to it are recorded or reproduced while being floated on both recording surfaces 17 of the hard disk 1 by an air film of submicron order. To do.

Therefore, in this disc cartridge, as shown in FIGS. 1 and 3, the center core 5 of the hard disc 1 is
A plurality of blades 19 for exhaust are provided on the outer peripheral portion on the lower surface side.

Further, the shutter 10 is opened by the above-mentioned mounting of the disc cartridge, and as shown in FIG. 2 and FIG.
An air intake 23 provided at one end of the cartridge 2 (one end 3a, 4a side of the upper and lower halves 3, 4)
Are closely attached to and connected to the packing 26 around the air outlet 25 of the air filter 24.

With the above configuration, at the time of recording or reproducing described above,
When the hard disk 1 is rotated at high speed in the cartridge 2 in the direction of arrow a in FIG. 2, an air flow in the direction of arrow a in FIG. The air suctioned by the air flow a causes the air cleaned by the air filter 24 to move to the air outlet 25 and the air intake 23.
Through the cartridge 2 into the cartridge 2 in FIG. 2 and FIG.
It is sucked from the direction.

On the other hand, the air inside the cartridge 2 is discharged from the center core hole 6 to the outside of the cartridge 2 in the direction of arrow c in FIGS. It It should be noted that part of the air in the cartridge 2 is discharged to the outside of the cartridge 2 from both head insertion holes 8 and 9 in the direction of arrow d in FIG.

Then, dust or the like that has entered the cartridge 2 at the time of assembling the disk cartridge or after that is blown in the cartridge 2 by the air flow a generated in the cartridge 2 and, along with the air flows c and d, It is discharged from the cartridge 2 through the core hole 6 or both head insertion holes 8 and 9.

As a result, only the clean air cleaned by the air filter 24 is always taken into the cartridge 2, and the dust and the like in the cartridge 2 are surely discharged to the outside of the cartridge 2. Therefore, during recording or reproduction, dust or the like will not adhere to both recording surfaces 17 of the hard disk 1.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments and various effective modifications can be made based on the technical idea of the present invention.

Further, the present invention can be applied to a disc cartridge using various discs of various recording and reproducing systems other than the hard disc.

[Effect of device]

As described above, in the disc cartridge of the present invention, when the disc rotates at high speed, clean air is introduced into the cartridge from the air inlet, and the air is provided on the center core which is rotated together with the disc at high speed. Since the plurality of exhaust blades are used to discharge the cartridge from the center core hole to the outside of the cartridge, it is possible to reliably discharge the dust and the like in the cartridge from the center core hole to the outside of the cartridge together with the discharged air. it can. Therefore, it is possible to prevent inconveniences such as dust and the like that have entered the cartridge from adhering to the recording surface of the disk and destroying the disk or the head, or causing an error in reading the head. Can be significantly improved.

Moreover, the present invention has a center core having an exhaust function, and has a very simple structure as compared with a new special exhaust device.

[Brief description of drawings]

The drawings show an embodiment of the present invention.
FIG. 2 is a perspective view of an essential part, FIG. 2 is an exploded perspective view of a disc cartridge, and FIG. 3 is a sectional view taken along the line III-III in FIG. 2 for explaining the drive of a disc by a disc player. In the reference numerals used in the drawings, 1 ... hard disk 2 ... cartridge 5 ... center core 6 ... center core hole 8, 9 ... head insertion hole 12 ... turntable 16 ... magnetic head 19 ... blade is there.

Claims (1)

[Scope of utility model registration request] 1. A disc having a center core mounted on a turntable, a center core hole for rotatably accommodating the disc and allowing the center core to be mounted on the turntable, and recording / reproducing on / from the disc. And a cartridge having a head insertion hole for inserting a head for carrying out the following: an air inlet provided on one side surface of the cartridge for introducing clean air from a tangential direction to the rotation direction of the disk; A plurality of blades provided on the outer peripheral portion on the lower surface side of the center core, and at the time of high-speed rotation of the disk, clean air is introduced into the cartridge from the air inlet and air inside the cartridge By the plurality of blades from the center core hole in the rotation axis direction of the disc A disk cartridge characterized in that it is configured to be ejected.