JP2000090638A - Disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a disk device which prevents the outflow of air from the inside of an outer enclosure and which prevents dust particles from entering the outer enclosure from the outside. SOLUTION: An enclosure 2 which is opened in one side is installed. A cover body 3 which is supported by the enclosure 2 so as to be freely moved is installed. A mechanism chassis 6 which is arranged inside an outer enclosure 4 which is formed of the enclosure 2 and the cover body 3 is installed. A holder 5 which holds a disk cartridge 15 formed in such a way that a disklike recording medium 17 is housed rotatably inside a case body 16, in which an insertion hole 16c to be opened and closed by a shutter 18 is formed, and which is moved with respect to the enclosure 2 due to the movement of the cover body 3 is installed. An actuator 8 which is provided with heads 11, 11, which is moved when the shutter 18 at the disk cartridge 15 is opened, which allows the heads 11, 11 to be inserted through the insertion hole 16c and which positions the heads 11, 11 in arbitray positions on a recording track on the disklike recording medium 17 is installed. An air-outflow preventing space 13 which is opened only on the side of the insertion hole 16c in the disk cartridge 15 held by the holder 5 inside the outer enclosure 4 is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a disk drive. More specifically, the present invention relates to a technique for preventing outflow of air from the inside of an outer casing and preventing dust from entering the outer casing from the outside.

[0002]

2. Description of the Related Art A disk cartridge is inserted into a holder through a slot (insertion / removal opening) formed in an outer casing, and a disk-shaped recording medium rotatably housed in a case of the disk cartridge held in the holder. There is a disk device that records an information signal or reproduces the recorded information signal.

An outline of an example of such a conventional disk device will be described (see FIGS. 9 and 10).

[0004] The disk device a has a housing b opened upward.
Required members and mechanisms are arranged in an outer case d in which a cover c for covering the opening of the case b is supported.

[0005] The cover c is formed in a box shape having an opening at the bottom and the front, and is supported by the housing b so as to be vertically movable. A holder (not shown) is attached to the inner surface of the cover c, and the holder is moved up and down together with the cover c.

[0006] A mechanical chassis e is disposed in the housing b.
An actuator (not shown) having a head is rotatably supported on the mechanical chassis e. An arrangement hole f is formed in the mechanical chassis e, and a standing wall g is formed on the outer peripheral edge.

A spindle motor h is fixed to the housing b, and an upper end i thereof is formed as a disk mounting portion. Then, the spindle motor h is inserted into the arrangement hole f of the mechanical chassis e so that the disc mounting portion i is inserted into the mechanical chassis e.
Is located above.

The disk cartridge j has a case body k in which a disk-shaped recording medium 1 is rotatably housed, and an insertion hole m is formed in the rear surface of the case body k. Insertion hole m
Is a part for inserting a part of the actuator into the case body k when the disk-shaped recording medium l of the disk cartridge j is mounted on the disk mounting part i of the spindle motor h, and is opened and closed by a shutter (not shown). It has become so. Further, an insertion hole n into which the disk mounting portion i of the spindle motor h is inserted is formed at the center of the lower surface of the case body k.

When the cover c is moved upward with respect to the housing b, an insertion opening o for inserting or ejecting the disc cartridge j is formed on the front surface of the outer housing d. ). When the disc cartridge j is inserted through the insertion slot o, the shutter is rotated so that the insertion hole m and the insertion hole n of the disc cartridge j are opened.

When the disc cartridge j is inserted from the insertion opening o into a predetermined position of the holder attached to the cover member c, the cover member c is moved downward, and the disc cartridge j is moved downward together with the holder. The disk mounting portion i of the motor h is positioned in the case body k through the insertion hole n of the case body k, and the disk-shaped recording medium l is mounted on the disk mounting portion i.

When the disk cartridge j is mounted on the disk mounting portion i, a part of the actuator is inserted from the opened insertion hole m, and the disk-shaped recording medium 1 is rotated with the rotation of the spindle motor h. The head of the actuator is positioned at an arbitrary position on the recording track of the disk-shaped recording medium l, and the recording or reproduction of the information signal with respect to the disk-shaped recording medium l is performed.

At this time, air flows in the case body k of the disk cartridge j due to the rotation of the disk-shaped recording medium l. When the disk-shaped recording medium 1 is rotated, air flows from the center of the disk-shaped recording medium 1 toward the outer periphery.

Since the insertion hole m and the insertion hole n are formed in the disc cartridge j, air circulates so as to flow out of the insertion hole m and to flow in from the insertion hole n as shown in FIG. . As described above, in the disk device a, the cover c is movably supported by the housing b, and the cover c is placed between the housing b and the cover c. , Or a slight gap is formed due to a dimensional error or the like between the housing b and the cover c. Therefore, a part of the air flowing out of the insertion hole m is, for example, the rear gap p shown in FIG.
From the outside, and the outflow causes a negative pressure in the outer casing d, for example, the gap q on the front side shown in FIG.
External air flows in from the

When the rotation of the spindle motor h is stopped, the actuator is moved to the original position, and the recording or reproduction of the information signal on the disk-shaped recording medium 1 is completed. Then, the cover body c is moved upward, the disk cartridge j is moved upward together with the holder, the mounting state of the disk-shaped recording medium 1 in the disk mounting section i is released, and the disk cartridge j is ejected from the insertion opening o. You.

[0015]

However, in the conventional disk drive a, as described above, the air flowing out of the insertion hole m of the disk cartridge j is, for example,
The air flows out of the gap p to the outside, and during the rotation of the disc-shaped recording medium 1, for example, external air flows in through the gap q, and dust enters along with the air flowing into the outer casing d. . This intrusion of dust causes an error when recording or reproducing the information signal on the disk-shaped recording medium l.

Incidentally, the disc device a differs depending on the method of inserting the disc cartridge j into the device.
In addition to the type in which the cover c moves up and down with respect to the housing b, as shown in FIGS. 11 and 12, the cover c1 is rotated with respect to the housing A so-called pop-up type disk device a1 to be inserted, and an outer casing d as shown in FIGS.
There is known a so-called slot-in type disk device a2 in which a slot m2 is formed on the front surface of the disk 2 and a disk cartridge j is inserted from the slot m2.

In the disk device a2 of the slot-in type, the cover members c and c1 are movably supported by the housings b and b1 like the disk device a and the disk device a1. In addition, since there is no gap for the air to flow out of the outer casing d1, the problem of dust intrusion due to the inflow of air from the outside hardly occurs. However, in the case of the pop-up type disk device a1, Similarly, since a gap is formed between the housing b1 and the cover c1, a problem of intrusion of dust may occur.

Accordingly, it is an object of the present invention to overcome the above-mentioned problems, to prevent air from flowing out of the outer casing, and to prevent dust from entering the outer casing from the outside. .

[0019]

The disk device according to the present invention comprises:
In order to solve the above-described problems, a mechanical chassis disposed in an outer housing formed by a housing opened on one side, a cover body movably supported by the housing, and the housing and the cover body. And a holder that holds a disk cartridge in which a disk-shaped recording medium is rotatably housed in a case body having an insertion hole that is opened and closed by a shutter, and that is moved with respect to the housing as the cover body moves. And an actuator having a head and an actuator that moves when the shutter of the disk cartridge is opened, inserts the head from the insertion hole, and positions the head at an arbitrary position on the recording track of the disk-shaped recording medium, and a holder in the outer casing. An air outflow-prevention space that opens only on the side of the insertion hole of the disk cartridge held by the disk cartridge is formed.

Therefore, in the disk device of the present invention,
During the rotation of the disc-shaped recording medium, the inside of the outer casing is hardly negatively pressured.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a disk drive according to an embodiment of the present invention.

In the embodiments described below, the present invention is applied to a storage device using a large-capacity hard disk as a recording medium.

The storage device, that is, the disk device 1 is provided with required members in an outer housing 4 in which a cover body 3 covering an opening of the housing 2 is supported by a housing 2 opened upward to be able to move up and down. And each mechanism is arranged.

The cover body 3 is supported by the housing 2 so as to be vertically movable by a moving mechanism (not shown). The cover body 3 has a thin box shape opened downward, and has a top plate surface 3a and the top plate surface. A peripheral surface 3b suspended from the peripheral edge of 3a is integrally formed. A notch 3c opened downward is formed on the front surface of the peripheral surface 3b.

A holder 5 is mounted on the inner surface of the cover body 3 by screwing.
a and side portions 5 suspended from both left and right edges of the upper surface portion 5a
b, 5b and receiving portions 5c, 5c protruding from the side surface portions 5b, 5b in a direction approaching each other are integrally formed.
The holder 5 is moved up and down with respect to the housing 2 with the movement of the cover body 3 in the vertical direction, so that the holder 5 is moved inside and outside the housing 2.

The cover body 3 is moved downward (see FIG. 1),
That is, when moved from the closed position covering the opening of the housing 2 to the upper moving end, the insertion / removal opening 4 a surrounded by the notch 3 c and the upper edge of the front surface of the housing 2 is formed on the front surface of the outer housing 4. (See FIG. 2). At this time, the holder 5 is located immediately behind the insertion / removal opening 4a, and a disc cartridge described later can be inserted into the holder 5 via the insertion / removal opening 4a.

The housing 2 is provided with a mechanical chassis 6 for arranging required members and mechanisms, and the mechanical chassis 6 is provided with an arrangement hole 6a. 6). An upright wall 7 is provided upright on the outer peripheral edge of the mechanical chassis 6, and when the cover body 3 is in the closed position, the upright wall 7 is completely covered by the peripheral surface 3b of the cover body 3 (see FIG. 6). ).

A rotary actuator 8 is arranged on the rear one third of the mechanical chassis 6.

The actuator 8 includes a rotating part 9 and the rotating part 9.
, The upper yoke 10
a, composed of a lower yoke (not shown), a coil, and a magnet.

As shown in FIG. 4, the rotating portion 9 includes an arm portion 9a supported by a support shaft (not shown) erected on the mechanical chassis 6 and a mount base 9b attached to a tip end of the arm portion 9a. , 9b and the mount bases 9b, 9b
Suspensions 9c, 9 projecting vertically apart from each other
c and floating head sliders 9d, 9d provided at the tips of the suspensions 9c, 9c. Heads 11, 11 are fixed to the floating head sliders 9d, 9d. Then, the arm 9a and the suspensions 9c, 9
c are positioned so as to be orthogonal to each other via the mount bases 9b, 9b.

In the actuator 8, the rotating portion 9 is swung by an electromagnetic force generated between the coil and the magnet, and the heads 11, 11 are positioned on arbitrary recording tracks of a disk-shaped recording medium, which will be described later, and record information signals. Or, reproduction is performed.

When the actuator 8 is not performing a recording or reproducing operation on the disk-shaped recording medium, the rotating portion 9 is positioned at the clockwise moving end shown in FIG. State.

The cover plate 12 is fixed to a part of the upright wall 7 erected on the mechanical chassis 6. That is, the cover plate 12 is fixed to the upper edge of the rear wall substantially one-third of the standing wall 7,
By fixing the cover plate 12 to the upper edge of the upright wall 7, an air outflow prevention space 13 that opens forward and is surrounded by the cover plate 12, a part of the upright wall 7, and a part of the mechanical chassis 6 is formed ( See FIG. 6).

A spindle motor 14 is mounted on the bottom surface of the housing 2, and its upper end 14a is formed as a disk mounting portion. An annular magnet 14b is fixed to the disc mounting portion 14a. The spindle motor 14 is positioned above the mechanical chassis 6 with the disk mounting portion 14a inserted through the arrangement hole 6a of the mechanical chassis 6.

The disk cartridge 15 comprises a flat case body 16 in which a hard disk is rotatably housed as a disk-shaped recording medium 17, and the case body 16 is composed of an upper half 16a and a lower half 16b which are vertically connected ( 7 and 8). An insertion hole 16 c is formed in the rear surface of the case body 16, and the insertion hole 16 c is used for the disk-shaped recording medium 17 to be mounted on the disk mounting portion 14 a
This is for inserting a part of the actuator 8 when it is mounted on the actuator 8. An insertion hole 16d is formed substantially at the center of the lower half 16b.

A shutter 18 is rotatably supported inside the case body 16. The shutter 18 has a supported portion 18a and an opening / closing portion 18b provided at one end of the supported portion 18a. I have. In a state before the disk cartridge 15 is inserted from the insertion opening 4a of the disk device 1, the insertion hole 16c of the case body 16 is closed by the opening / closing portion 18b of the shutter 18 and the insertion hole 16d is connected to the supported portion 18a. Is blocked by

As described above, the insertion hole 16c and the insertion hole 16d of the case body 16 are closed by the shutter 17 when not in use, thereby preventing dust from entering the case body 16 when not in use. .

When the disk cartridge 15 is inserted through the insertion opening 4a, the shutter 18 is rotated in one direction so that the insertion hole 16c of the case body 16 is opened and the insertion hole 16d is opened. Has become.

At the center of the disk-shaped recording medium 17, a center core 17a made of a magnetic metal material is provided.

When the cover 3 is moved upward with respect to the housing 2, an insertion opening 4 a is formed in the front surface of the outer housing 4, and the disk cartridge 15 is moved from the insertion opening 4 a to a predetermined position of the holder 5. When the cover body 3 is moved downward, the disk cartridge 15 is moved downward, and the disk-shaped recording medium 17 is mounted on the disk mounting portion 14a of the spindle motor 14 (see FIG. 6).

At this time, the disk-shaped recording medium 17 is mounted on the disk mounting portion 14a by the center core 17a being attracted to the magnet 14b fixed to the spindle motor 14. The disk cartridge 15
Is inserted through the insertion opening 4a, the shutter 18 is rotated to open the insertion hole 16c and the insertion hole 16d of the disk cartridge 15, as described above. When the disk-shaped recording medium 17 of the disk cartridge 15 is mounted on the disk mounting portion 14a, the insertion hole 16c of the disk cartridge 15 faces the front opening of the air outflow prevention space 13.

From the insertion hole 16c, a part of the actuator 8, that is, suspensions 9c, 9c, floating head sliders 9d, 9d and the heads 11, 11 fixed thereto.
Is inserted, the disk-shaped recording medium 17 is rotated with the rotation of the spindle motor 14, and the heads 11 and 11 of the actuator 8 are positioned at arbitrary positions on the recording tracks of the disk-shaped recording medium 17, and The recording or reproduction of the information signal with respect to 17 is performed.

At this time, an air flow is generated in the outer casing 4 by the rotation of the disk-shaped recording medium 17. Since the insertion hole 16c and the insertion hole 16d are formed in the disc cartridge 15, air flows into the insertion hole 1c as shown in FIG.
It circulates so as to flow out of 6c and to flow in through the insertion hole 16d.

The air flowing out of the insertion hole 16c flows backward, that is, into the air outflow prevention space 13 opened to the insertion hole 16c side. Since the air outflow prevention space 13 is opened only on the side of the insertion hole 16c, the air flowing out of the insertion hole 16c is blocked by the cover plate 12 and the upright wall 7 from flowing upward and backward, and flows forward again. Through the space between the lower half 16b of the disk cartridge 15 and the mechanical chassis 6, it flows into the case body 16 through the insertion hole 16d.

As described above, since the air existing in the outer casing 4 is only circulated in the outer casing 4, it flows out of the rear gap 19a between the casing 2 and the cover 3 shown in FIG. Therefore, since the inside of the outer casing 4 does not have a negative pressure, external air does not flow into the outer casing 4 from the front gap 19b between the casing 2 and the cover 3 shown in FIG.

The rotation of the spindle motor 14 is stopped, and the rotating portion 9 of the actuator 8 is moved to its original position, that is,
The recording or reproduction of the information signal on the disk-shaped recording medium 17 is completed by moving to the position shown in FIG. Then, the cover 3 is moved upward with respect to the housing 2 and the holder 5 is moved.
At the same time, the disk cartridge 15 is moved upward,
The mounting state of the disk-shaped recording medium 17 to the disk mounting portion 14a is released, and the disk cartridge 15 is ejected from the insertion opening 4a.

When the disc cartridge 15 is ejected, the shutter 18 of the disc cartridge 15 is rotated in the opposite direction by the urging force of a not-shown torsion coil spring supported in the case body 16. The insertion hole 16c and the insertion hole 16d are closed.

As described above, in the disk device 1, the air outflow prevention space 13 that opens only in the insertion hole 16c side of the disk cartridge 15 held in the holder 5 is formed in the outer casing 4. Disc-shaped recording medium 1
7, the inside of the outer casing 4 does not become a negative pressure during the rotation of the
External air does not flow into the outer casing 4 from the gap 19b between the cover 3 and the cover 3.

Therefore, the intrusion of dust from the outside into the outer casing 4 when the disk-shaped recording medium 17 rotates can be prevented, and the recording or reproduction of information signals on the disk-shaped recording medium 17 due to the intrusion of dust can be prevented. Can be prevented from occurring.

The provision of the cover plate 12 can prevent dust from entering the outer casing 4 from above even when the disk-shaped recording medium 17 is not rotating.

Further, in the disk device 1, since the actuator 8 is disposed in the air outflow prevention space 13, the size of the disk device 1 can be reduced by effectively utilizing the space.

Further, dust can be prevented from entering the air outflow prevention space 13 from above by the cover plate 12, and the operation of the actuator 8 disposed in the air outflow prevention space 13 can be optimized. Can be planned.

In addition, the air outflow prevention space 13 is formed by a simple structure in which the cover plate 12 is attached to the upper edge of the upright wall 7 erected on the mechanical chassis 6 originally provided in the disk device. The formation of the air outflow prevention space 13 does not significantly increase the manufacturing cost of the disk device 1 or significantly increase the manufacturing time.

It should be noted that the formation of the air outflow prevention space 13 to prevent the intrusion of dust can be achieved by not only the type in which the cover 3 moves up and down with respect to the housing 2 such as the disk device 1 described above, but also FIG. Also, the present invention can be applied to a so-called pop-up type disk device a1 in which the cover c1 rotates with respect to the housing b1 shown in FIG.

It should be noted that the specific shapes and structures of the respective parts shown in the above-described embodiments are merely examples of the embodiment when the present invention is carried out.
These should not be construed as limiting the technical scope of the present invention.

[0056]

As is evident from the above description, the disk drive of the present invention comprises a housing having one opening,
A cover body movably supported by the housing, a mechanical chassis disposed in an outer housing formed by the housing and the cover body, and a disk-shaped body inside a case body having an insertion hole opened and closed by a shutter. A holder that holds a disk cartridge in which a recording medium is rotatably stored and that is moved with respect to the housing as the cover body moves; and a head that moves when the shutter of the disk cartridge is opened to move the head. An actuator which is inserted through the insertion hole and positions the head at an arbitrary position on the recording track of the disk-shaped recording medium; and an air outflow prevention space opened only on the insertion hole side of the disk cartridge held by the holder in the outer casing. Is formed.

Therefore, the intrusion of dust from the outside into the outer casing during rotation of the disk-shaped recording medium can be prevented,
It is possible to prevent an error at the time of recording or reproducing the information signal on the disk-shaped recording medium due to invasion of dust.

Further, even when the disk-shaped recording medium is not rotated, dust can be prevented from entering the outer casing by the cover plate.

According to the second aspect of the present invention, since the actuator is disposed in the air outflow prevention space, the size of the disk device can be reduced by effectively utilizing the space.

Further, the cover plate can prevent dust from entering the air outflow prevention space, and can optimize the operation of the actuator disposed in the air outflow prevention space.

According to the third and fourth aspects of the present invention, an upright wall is formed on the outer edge of the mechanical chassis, and the air outflow preventing space is formed between the mechanical chassis, the upright wall, and the edge of the upright wall opposite to the mechanical chassis. The air outflow prevention space is formed by a simple structure in which the cover plate is simply attached to one edge of an upright wall erected on a mechanical chassis originally provided in the disk device. The formation of the air outflow prevention space does not significantly increase the manufacturing cost of the disk device or significantly increase the manufacturing time.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the disk drive of the present invention together with FIGS. 2 to 8, and is a perspective view showing a state where a cover body is in a closed position.

FIG. 2 is a perspective view showing a state in which a cover body is moved upward to form an insertion opening.

FIG. 3 is an exploded perspective view showing a state where a disk cartridge is mounted.

FIG. 4 is an exploded perspective view showing an internal structure.

FIG. 5 is a perspective view showing an internal structure with a cover body and a holder removed.

FIG. 6 is a schematic enlarged longitudinal sectional view showing a flow of air generated during rotation of a disk-shaped recording medium.

FIG. 7 is a perspective view showing a disk cartridge.

FIG. 8 is an exploded perspective view showing the disk cartridge.

9 shows a conventional disk device together with FIG. 10, and is a schematic enlarged longitudinal sectional view showing a state where a disk cartridge is being inserted from an insertion slot. FIG.

FIG. 10 is a schematic enlarged longitudinal sectional view showing a flow of air generated during rotation of the disk-shaped recording medium.

11 shows a pop-up type disk device together with FIG. 12, and is a schematic view showing a state where a cover body is opened and a disk cartridge is inserted.

FIG. 12 is a schematic view showing a state where a disk cartridge is mounted.

FIG. 13 shows a slot-in type disk device together with FIG. 14, and is a schematic view showing a state where a disk cartridge is being inserted.

FIG. 14 is a schematic view showing a state where a disk cartridge is mounted.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Disk device, 2 ... Case, 3 ... Cover body, 4 ... Outer case, 5 ... Holder, 6 ... Mechanical chassis, 7 ... Standing wall, 8 ...
Actuator, 11 head, 12 cover plate, 13
Air outflow prevention space, 15 ... disk cartridge, 16
... case body, 16c ... insertion hole, 17 ... disk-shaped recording medium

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Toshio Mamiya 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Takashi Yamada 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Yotaro Sanada 6-7-35 Kita Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation

Claims (4)

[Claims] 1. A housing having an opening, a cover body movably supported by the housing, a mechanical chassis disposed in an outer housing formed by the housing and the cover body, and a shutter. A holder that holds a disk cartridge in which a disk-shaped recording medium is rotatably housed in a case body having an insertion hole that can be opened and closed, and that is moved with respect to the housing as the cover body moves; And an actuator that moves when the shutter of the disk cartridge is opened, inserts the head from the insertion hole, and positions the head at an arbitrary position on the recording track of the disk-shaped recording medium, and is held by the holder in the outer casing. A disk device, wherein an air outflow prevention space that opens only on the side of an insertion hole of a disk cartridge is formed. 2. The disk device according to claim 1, wherein an actuator is disposed in the air outflow prevention space. 3. An upflow wall is formed at an outer edge of the mechanical chassis, and an air outflow prevention space is formed by the upright wall, and a cover plate attached to an end of the upright wall opposite to the mechanical chassis. 2. The disk device according to claim 1, wherein: 4. An upflow wall is formed at an outer edge of the mechanical chassis, and an air outflow prevention space is formed by the mechanical chassis, the upright wall, and a cover plate attached to an edge of the upright wall opposite to the mechanical chassis. 3. The disk device according to claim 2, wherein: