JP2553320Y2 - Magnetic disk drive - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application] This invention is intended for external storage of information equipment.
The present invention relates to a magnetic disk device used as a device.

[0002]

2. Description of the Related Art Magnetic disk drives are widely used as external storage devices for information equipment, and in recent years, in particular, small magnetic disks have been used.
2. Description of the Related Art Disk devices have been widely mounted on small personal computers such as laptops and notebooks, and portable information devices and information terminals capable of handwriting input.

[0003] In the above-mentioned small information equipment, outer parts such as a casing directly touched by a user are often made of an electrically insulative material such as resin, but the inner chassis is made of a material. In some cases, it is necessary to take countermeasures such as a problem of an interfering electromagnetic wave, so that the case is made of metal, and the housing of the built-in magnetic disk device is also made of metal.

[0004] For this reason, mounting the magnetic disk device directly on the chassis of the information equipment requires a magnetic disk device electrically connected from a chassis in which a high-frequency noise current such as a drive circuit of a display section flows. Flows into the housing in which the head / disk assembly for handling the weak signal is stored, which hinders the recording / reproducing operation of the magnetic disk device.

As an example of measures against such a problem, conventionally, when a magnetic disk device is mounted on an information device, a mounting plate made of a metal sheet metal is used, and the mounting plate and the magnetic disk device housing are used. An insulating sheet made of rubber or the like is sandwiched between the body and the body, and in this state, the magnetic disk device and the information device are fixed to each other by screws via a mounting plate.

[0006]

However, the mounting structure using such a conventional mounting plate has the following problems.

(1) Vibration characteristics of the magnetic disk drive deteriorate due to insufficient strength of the mounting plate. (2) The installation space for the components inside the magnetic disk drive is reduced to secure the mounting space for the mounting plate. (3) Due to the play of the mounting plate on the magnetic disk device, the positions of the screw holes of the mounting plate with respect to the information equipment are varied, and the mounting property is deteriorated.

(4) Although the insulating sheet is interposed, the screw is used, so that the noise current flowing through the chassis of the information device flows into the housing of the magnetic disk device via the screw, causing a reading error. Operation failure occurs.

[0009] Therefore, this invention is to solve the conventional problems as described above, when mounted on the information device, to electrical noise current from the outside, resistance is strong, can be stably operated It is intended to provide such a magnetic disk drive .

[0010]

In order to achieve the above object, a magnetic disk drive of the present invention has a magnetic disk.
That is, it is attached to the system housing via the attachment
Magnetic disk device, the magnetic disk is removed.
Formed of a surrounding conductive material and facing the magnetic disk.
Inner surface and an outer surface opposite to the inner surface;
The mounting hole has an opening on the outer surface.
Device housing, and embedded and fixed in the plurality of mounting holes.
Receiving part for fixed and attached, receiving the fixing member
And, when the fixing member is received by the receiving portion,
The fixing member is electrically connected to the device housing made of a conductive material.
Multiple mountings with insulation for gaseous insulation
And a material.

[0011]

According to the above arrangement, an insulating mounting member is fixed and embedded outside the metal housing of the magnetic disk drive, and the magnetic disk is utilized by using the screw holes of the mounting member. by attaching the device to the information device, from the information device
Noise can be cut off.

[0012]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 7 are perspective views from the top side of a small magnetic disk drive in this embodiment . The housing of the magnetic disk device includes a base 1 on which components such as a magnetic disk 16 as a recording medium and a magnetic head assembly 17 are mounted, and a cover 3 that covers an upper portion of the base 1. It is made of metal in order to prevent electromagnetic interference.

At four locations on both left and right sides and four locations on the lower surface of the base 1, mounting portions 5 and 7 for mounting information equipment on which a magnetic disk is mounted to a metal chassis 18 are provided, respectively. The structure of the mounting portions 5 and 7 is such that a recess 1a is formed on the side surface of the base 1 in terms of the side surface.
A mounting hole 1b as shown in FIG. 2 is formed on the lower side of the mounting member. A mounting member 9 having electrical insulation as shown in FIGS. 3 and 4 is fitted into the mounting hole 1b and fixed by bonding. You.

The mounting member 9 comprises a hollow insulating bush 11 fitted in the mounting hole 1b and made of an insulating material such as plastic, and a nut 13 inserted into the insulating bush 11. The insulating bush 11 has a flange 11a formed at one end thereof, and the flange 11a is exposed to the outside of the concave portion 1a when inserted into the mounting hole 1b. The nut 13 has a screw hole 13a, and a concave portion 13b is formed in the outer peripheral portion to enhance the connection with the insulating bush 11 during the insert molding. The mounting portion 7 on the lower surface side of the base 1 also has the same configuration as the mounting portion 5 on the side surface, such as using the same mounting member 9 as described above.

According to such a mounting structure of the magnetic disk device, the magnetic disk device is shown in FIGS.
As described above, using the mounting member 9 fitted and adhered to the side surface or the lower surface of the base 1, the screw 1 is attached to the metal chassis 18 of the information equipment on which the magnetic disk drive is mounted.
9 is done. At this time, the nut 13 of the mounting member 9 to which the screw 19 is screwed is made of metal. Since the insulating bush 11 is interposed between the nut 13 and the metal base 1, the magnetic disk The base 1 of the apparatus is electrically insulated from the chassis 18 on the information device side. As a result, the high-frequency noise current flowing in the chassis 18 of the information device is
The magnetic disk device does not flow into the housing in which the head-disk assembly for handling weak signals of the magnetic disk device that is electrically connected is stored, and the magnetic disk device can perform the recording / reproducing operation without any trouble.

Further, since the mounting member 9 is embedded and bonded in the mounting hole 1b of the base 1 of the magnetic disk drive, the strength of the mounting portion is high, and the vibration characteristics of the magnetic disk drive are sufficiently ensured. The position of the screw hole 13a for attachment is constant, and attachment is easy.
Further, since the mounting member 9 has a configuration in which only the insulating bush 11 is formed around the nut 13, the mounting member 9 is small, and the mounting space of each component inside the magnetic disk device does not decrease because the mounting member 9 is mounted. .

FIGS. 5 and 6 show another embodiment of the mounting member. The attachment member 15 is an integral member entirely made of an insulating material such as plastic, has a screw hole 15a at the center, and has a flange 15b formed on the outer peripheral portion. In this embodiment, the same effects as those of the above-described embodiment can be obtained, and since it is integrated, the manufacturing is easier and the cost can be reduced as compared with the above-described embodiment.

In each of the above embodiments, the screw holes 13a and 15a may be processed before or after embedding in the base 1 of the magnetic disk drive.

[0020]

As described above, according to the present invention, a mounting member having a screw hole and having electrical insulation is embedded outside a metal housing of a magnetic disk drive. Therefore, if the magnetic disk drive is fixed to the metal housing of the information device via this mounting member, the vibration characteristics of the magnetic disk drive can be kept good, and the installation space for each component inside the magnetic disk drive is damaged. And the magnetic disk device can be easily attached to the information device side, and an electrical insulation structure of the magnetic disk device with respect to the information device side can be realized, and the original recording / reproducing operation of the magnetic disk device can be performed without any trouble. be able to.

[Brief description of the drawings]

FIG. 1A is a magnetic disk showing an embodiment of the present invention.
FIG. 2B is a perspective view of the apparatus, and FIG.
FIG. 2C is a side view of the magnetic disk drive of FIG.
FIG.

FIG. 2 is a perspective view of the magnetic disk device of FIG . 1 in a state where a mounting member is removed.

FIG. 3 is a sectional view of a mounting member mounted on the magnetic disk drive of FIG. 1;

FIG. 4 is a left side view of the attachment member of FIG. 3;

FIG. 5 is a sectional view showing another embodiment of the mounting member.

FIG. 6 is a left side view of the attachment member of FIG. 5;

FIG. 7 Remove the cover 3 of the magnetic disk drive of FIG.
FIG. 3 is a perspective view showing the internal structure in a folded state.

FIG. 8 Attach information equipment to the magnetic disk drive of Fig. 1
It is a side view showing the state where it fell.

FIG. 9 FIG. 9 is a sectional view showing the attachment state of FIG. 8 in detail.
(A) shows an information device mounted on the mounting part on the side of the base.
In the attached drawing, (b) shows information on the mounting part on the bottom of the base.
It is the drawing which attached the equipment.

[Explanation of symbols]

 Reference Signs List 1 base (metal housing) 9, 15 mounting member 13a, 15a screw hole

Claims (8)

(57) [Scope of request for utility model registration] 1. A magnetic disk having a magnetic disk via an attachment member.
To a magnetic disk drive that can be
Oite, wherein is formed of a conductive material surrounds the magnetic disk, before
The inner surface facing the magnetic disk and the opposite side to the inner surface
Having an outer surface and a plurality of mounting holes, wherein the mounting holes are
A device housing having an opening on the outer surface; and a plurality of mounting holes embedded and fixedly mounted.
Receiving portion for receiving the fixing member, and the fixing member
Is formed of the conductive material when received by the receiving portion.
The fixed member is electrically insulated from the
A plurality of mounting members with insulating parts for
A magnetic disk device characterized by the above-mentioned. 2. The apparatus of claim 1 wherein said mounting is performed.
The member contacts the device housing and the system housing.
To protrude from the outer surface of the device housing so as to prevent
A magnetic disk having an exposed portion made of an edge material.
Disk device. 3. The apparatus of claim 2 wherein said mounting.
The insulating part of the member shall be constructed integrally with the exposed part.
A magnetic disk drive characterized by the following. 4. An apparatus according to claim 2, wherein said exposed portion is
A magnetic disk drive having a flange. 5. The apparatus of claim 1, wherein said mounting is performed.
Each receiving part of the member has a fixing part having a fixing hole inside.
In addition, each insulating portion of the mounting member is provided on an outer periphery of the fixed portion.
A magnetic disk drive provided in a computer. 6. The apparatus according to claim 5, wherein
The fixing portion has a groove on the inner surface engaging with the fixing member.
Characteristic magnetic disk drive. 7. The apparatus of claim 1, wherein said mounting is performed.
Each insulating part of the member has an inner surface, and each receiving part of the mounting member is provided.
The fixing part has a fixing hole formed by the inner surface of the insulating part.
A magnetic disk drive characterized by having. 8. The apparatus according to claim 7, wherein said receiving portion is provided.
Has a groove on the inner surface of the insulating portion.
Qi disk device.