JP2000003583A - Magnetic disk unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the assembling work and stabilize the wiring of each of circuits and to improve the mechanical strength at the time of mounting a disk module to a printed wiring board. SOLUTION: Through holes 2a of proper numbers are formed at a peripheral part along its longitudinal direction in the printed wiring board 2 in which a connector 4 is attached to one end part and a display board 6 is attached to the other end part, and one pair of supporting boards 9 provided with a supporting projection 9a inserted into this through hole 2a is set to the wiring board 2. In this case, a projecting part of the supporting projection 9a is soldered to the wiring board 2. A disk module 3 is positioned between one pair of supporting boards 9, a disk fixing screw 10 passed through a fixing hole 9c of the supporting boards 9 is clamped to a screw hole 3a of the disk module 3 and the module is fixed. Electric connection is achieved by engaging a power source cable connector 8 and a signal cable connector 7 with a disk module side connector 3b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a magnetic disk unit incorporated in a disk array device, a magnetic disk device, or the like constituted by an aggregate of disks.

[0002]

2. Description of the Related Art In a magnetic disk drive having a structure in which a disk unit is incorporated, the recording capacity can be increased or decreased by increasing or decreasing the number of disk units incorporated in consideration of convenience in use. As a magnetic disk unit of this type of conventional magnetic disk device,
For example, there is a magnetic disk device described in JP-A-2-54401. This magnetic disk device is provided with a magnetic disk unit in which a magnetic recording medium and means for writing and reading to and from the magnetic recording medium are built in a casing,
A printed circuit board on which a control circuit for controlling the plurality of magnetic disk units is mounted is provided, and the casings of the plurality of magnetic disk units are electrically connected to devices in the casing and fitted to each other. Possible male and female connectors are provided, respectively, and connectors are provided between one magnetic disk unit and the printed circuit board so as to be fitted with the male and female connectors.

Further, as a magnetic disk drive having a sealed head disk assembly mounted thereon, for example, Japanese Utility Model Application Laid-Open No.
No. 42592. In this magnetic disk drive, the closed head assembly is mounted on a support frame with guide rails, and is mounted on the magnetic disk drive with a structure having a pull-out mechanism, and requires electrical connection with the closed head disk assembly. The electronic circuit unit and the sealed head disk assembly are connected to each other by connection of connectors provided at predetermined positions of the electronic circuit unit and the sealed disk assembly upon completion of mounting. It is a thing.

Further, as a small disk drive mounting structure, there is one described in, for example, Japanese Patent Application Laid-Open No. 1-112586. This small disk drive mounting structure includes, on a printed circuit board, a plurality of small disk drives, a connector for electrically connecting the printed circuit board and the small disk drive, and the printed circuit board and the outside. And a connector that makes electrical connection with the connector.

[0005]

However, in the magnetic disk drive described in Japanese Patent Application Laid-Open No. 2-54401, a failure or failure occurs in the control circuit shared by a plurality of magnetic disk units. In such a case, all of the plurality of magnetic disk units do not operate, and all data recorded on these recording media cannot be used, which may result in serious damage.

Further, in the magnetic disk drive disclosed in Japanese Utility Model Laid-Open No. 59-42592, the draw-out mechanism must be provided in both the closed head disk assembly and the magnetic disk drive, so that the mechanism becomes complicated and the hermetic seal is increased. A space for inserting and removing the die head disk assembly is required around the magnetic disk device, and the installation location may be restricted.

Further, in the small disk drive mounting structure described in Japanese Patent Application Laid-Open No. 1-112586, when a failure or failure occurs in one small disk drive, another small disk drive mounted on a printed circuit board is required. Stop the small disk drive,
The failed small disk device or the printed circuit board must be repaired or replaced, and during the work, the data recorded and stored in another small disk drive mounted on the printed circuit board concerned Can not be used, which causes great damage.

Accordingly, the present invention provides a magnetic disk unit of a magnetic disk drive which can simplify the assembly work and does not interrupt the use of data recorded and stored on each disk of the magnetic disk drive. It is intended to provide.

[0009]

As a technical means for achieving the above object, a magnetic disk unit according to the present invention comprises a recording medium, a medium driving means for driving the recording medium, and a recording medium. A head for writing and reading information and a head driving means for driving the head are housed in a casing, and a control circuit for controlling operations of the medium driving means, the head driving means, and the head is attached to the casing. A magnetic disk unit incorporated in a magnetic disk drive, wherein the disk module is fixed to a printed wiring board and electrically connected to a printed circuit formed on the printed wiring board. At the end of the plate, a connector is provided which is disengaged from the connector provided on the magnetic disk drive. It is characterized in that the appropriate circuit of the disk module and the magnetic disk device is connected by connection of the connector.

The disk module is fixed to a printed wiring board, and a printed circuit formed on the printed wiring board is electrically connected to the disk module by engaging a connector or the like. When the connector provided in the above is connected to the connector of the magnetic disk device, the connection between the disk module and the magnetic disk device is achieved. Therefore, the assembling operation can be simplified with a simple structure without a drawer mechanism or the like.

According to a second aspect of the present invention, in the magnetic disk unit, a pair of support plates are implanted on the printed wiring board, and the disk module is fixed to the support plate to be fixed to the printed wiring board. It is characterized by.

By fixing the disk module to a support plate planted on the printed wiring board, the disk module can be fixed to the printed wiring board. Then, the disk module and the predetermined circuit are connected by a printed circuit formed on the printed wiring board.

According to a third aspect of the present invention, in the magnetic disk unit, a locking hole is formed in the printed wiring board, and a support projection inserted into the locking hole is formed in the support plate. The present invention is characterized in that a portion protruding from a stop hole is brazed, a support plate is planted on a printed wiring board, and a disk module is screwed to the support plate.

The support projection formed on the support plate is inserted into the locking hole of the printed wiring board, and the portion protruding from the locking hole and the printed wiring board are brazed by soldering or other methods. If the disk module is fixed to this support plate by screws, the disk module is fixed to the printed wiring board. This simplifies the work of fixing the disk module to the printed wiring board.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a magnetic disk unit according to the present invention will be specifically described based on preferred embodiments shown in the drawings. 1 to 4 show a first embodiment, and FIGS. 5 to 7 show a second embodiment.

FIG. 1 is a schematic perspective view of a magnetic disk unit 1 according to a first embodiment of the present invention. I have. Disk module 3
Houses a disk as a magnetic recording medium and its drive mechanism inside a casing, a magnetic head for writing and reading information to and from the disk, and a drive mechanism therefor. A printed circuit board on which a control circuit for controlling operations of a motor and a drive mechanism is formed is mounted. This magnetic disk unit is incorporated into a magnetic disk device.

FIG. 2 is an exploded perspective view of the magnetic disk unit 1. The connector 4 is attached to one end of the printed wiring board 2 in the longitudinal direction, and the printed circuit formed on the printed wiring board 2 is connected to the connector. 4 to a predetermined circuit such as a control circuit of the magnetic disk drive. Further, the magnetic disk device is connected to a predetermined information processing device such as a computer.

A signal cable connector 7 and a power cable connector 8 are connected to a printed circuit formed on the printed wiring board 2. At the other end of the printed wiring board 2, the display plate 6 is attached by a set screw 6a at a substantially right angle to the printed wiring board 2, and a display lamp such as a light emitting diode described later is mounted on the display plate 6. An appropriate number of holding holes 6b to be held are formed.

A support plate 9 is attached to an edge of a side of the printed wiring board 2 along the longitudinal direction.
That is, the support plate 9 is formed by appropriately bending a band-shaped plate material, and an appropriate number of support protrusions 9a are formed at appropriate intervals at a lower end thereof. On the other hand, a through hole 2a as a locking hole is formed at the edge of the printed wiring board 2 at an interval equal to the interval between the support projections 9a, and the support projection 9a is inserted into the through hole 2a. It is. The support protrusion 9a is inserted into the through hole 2a, and a portion protruding from the printed wiring board 2 is formed on the back side of the printed wiring board 2 by soldering or the like, as shown in FIG. The support plate 9 is attached to the printed wiring board 2 by brazing. In addition, it is not limited to brazing, and it can also be attached by caulking or other methods.

The support plates 9 are mounted as a pair, and the distance between the support plates 9 is slightly smaller than the width of the disk module 3 because the distance between the surfaces of the holding spring portions 9b formed by bending inward is formed. It is like that. This holding spring part
9b is formed with a fixing hole 9c through which the disk fixing screw 10 is inserted. On the side surface of the disk module 3, a screw hole 3a screwed with the disk fixing screw 10 is formed. The disk module 3 is located between the pair of support plates 9.
Is positioned, the side surface of the disk module 3 is pressed and held by the restoring force of the holding spring portion 9b.

FIG. 4 is a block diagram showing the structure of the magnetic disk unit 1. As shown in FIG. 1, the signal cable connector 7 and the power cable connector 8 are connected to the disk module side connector 3b of the disk module 3. When connected, a power supply line 12 and a signal line 13 are formed between the disk module 3 and the connector 4. The printed circuit formed on the printed wiring board 2 connects between the connector 4 and the power cable connector 8 and between the connector 4 and the signal cable connector 7.

The indicator lamp is provided on the disk module 3.
14a and 14b are connected to display the drive state of the disk and the drive state of the magnetic head. An indicator lamp 16 is connected to the connector 4 via a signal line 15 by a printed circuit.
The indicator lamp 16 is turned on from the connector 4 via the signal line 15.

An assembly procedure and operation of the embodiment of the magnetic disk unit according to the present invention configured as described above will be described.

As shown in FIG. 2, support projections 9a of a pair of support plates 9 are formed in through holes 2a formed in printed wiring board 2.
Is inserted, and the front end of the support protrusion 9a protruding from the back surface side of the printed wiring board 2 is brazed by the brazing portion 11, and the support plate 9 is fixed to the printed wiring board 2. The disk fixing screw 10 in which the disk module 3 is housed in a portion sandwiched between the pair of support plates 9 and the fixing holes 9c of the support plate 9 are inserted.
When the disk module 3 is screwed into the screw hole 3a of the disk module 3 and tightened, the disk module 3 is sandwiched by the support plate 9 and is fixed to the printed wiring board 2. When the disk module 3 is stored in the position between the support plates 9, the distance between the support plates 9 is slightly widened, and after the storage, the disk module 3 receives the restoring force of the holding spring portion 9 b of the support plate 9. Since the disk module 3 does not fall off, the work of tightening the disk fixing screw 10 becomes easy. The display panel 6 is fixed to the printed wiring board 2 with the set screw 6a, and the display lamps 14a and 14b connected to the disk module 3 are turned on.
The display lamp 16 connected to the printed wiring board 2 is also held in the holding hole 6b of the display board 6 while being held in the holding hole 6b. When the disk module side connector 3b is connected to the signal cable connector 7 and the power cable connector 8 with predetermined contacts, the magnetic disk unit 1 can be configured by being connected as shown in FIG.

When power is supplied from the power supply line 12, the drive mechanism for the disk is driven. The state of power supply to the drive mechanism for the disk is displayed by turning on the display lamp 14a. When a command is input from the apparatus, the magnetic head is driven to indicate that the magnetic head is accessing the disk by turning on the display lamp 14b. When the magnetic head accesses the disk, writing and reading of information to and from the disk are performed.

The connector 4 is provided with a power contact and a signal contact so as to be electrically connected to the mating connector to be fitted. When the connector 4 is engaged with the mating connector, the power supply contact and the signal contact are structurally connected to each other, and make electrical contact according to a predetermined sequence. It can also be possible.

Next, a second embodiment shown in FIGS. 5 to 7 will be described. In addition, about the same structure as 1st Embodiment shown in FIGS. 1-4, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

As shown in FIG. 5, the magnetic disk unit 1 according to the second embodiment is obtained by adding a voltage conversion circuit 5 to the configuration according to the first embodiment, as shown in FIG. The power cable connector 8 connected to the printed circuit of the printed wiring board 2
Connected through. This voltage conversion circuit 5 has the configuration shown in FIG.
As shown in FIG. 6, the printed circuit board 2 is mounted on a portion of the printed circuit board 2 sandwiched between the disk module 3 and the connector 4.
To be supplied.

FIG. 7 is a block diagram showing the configuration of the magnetic disk unit 1 according to the second embodiment. The voltage conversion circuit 5 is connected to a power supply line 12 connecting the disk module 3 and the connector 4. Its output side is connected to the disk module 3 via a power supply line 12a and a power supply line 12b. That is, the voltage conversion circuit 5 divides the voltage into 12 V and 5 V, for example, for supplying power to the disk drive mechanism and for supplying power to the magnetic head drive mechanism via the power supply lines 12 a and 12 b. Supplied and supplied. The connector 4 and the power cable connector 8 via the voltage conversion circuit 5 are also connected by a printed circuit formed on the printed wiring board 2 in the same manner as between the connector 4 and the signal cable connector 7. .

The procedure for assembling the magnetic disk unit according to the second embodiment is the same as that of the magnetic disk unit according to the first embodiment, and the support plate 9 fixed to the printed wiring board 2 is used.
The disk module 3 is sandwiched between
The disk fixing screw 10 into which the disk 9c is inserted may be screwed into the screw hole 3a of the disk module 3 and tightened. Further, the display panel 6 is fixed to the printed wiring board 2 with the set screw 6a, and the display lamp connected to the disk module 3 is provided.
14a and 14b are held in the holding holes 6b of the display board 6, and the display lamp 16 connected to the printed wiring board 2 is also held in the holding holes 6b of the display board 6. If the disk module side connector 3b is connected to the signal cable connector 7 and the power cable connector 8 with predetermined contacts, the magnetic disk unit 1 can be configured by being connected as shown in FIG.

When power is supplied from the power supply lines 12a and 12b, the drive mechanism for the disk is driven. The power supply state to the drive mechanism for the disk is displayed by turning on an indicator lamp 14a. When a command from the information processing device is input, the magnetic head is driven to indicate that the magnetic head is accessing the disk.
Displayed by lighting 14b. When the magnetic head accesses the disk, writing and reading of information to and from the disk are performed.

[0032]

As described above, according to the magnetic disk unit of the present invention, the disk module is fixed to the printed wiring board, and the disk module and the printed wiring board are formed using the connector or the like. Since the connection to the printed circuit is made, the work of assembling the disk module can be simplified. Further, since the disk module is connected to the magnetic disk unit and a predetermined circuit of the magnetic disk device by the printed circuit, the wiring can be stabilized.

According to the magnetic disk unit of the present invention, the disk module is fixed to the support plate implanted on the printed wiring board and the disk module is fixed to the printed wiring board. The strength is improved and the disk module can be stably supported. In addition, since the disk module can be fixed by being sandwiched between the pair of support plates, the disk module can be appropriately held by the support plate when the disk module is mounted, and the mounting operation is facilitated.

According to the magnetic disk unit of the third aspect of the present invention, since the support projection inserted into the locking hole is brazed and implanted on the printed wiring board, the mounting of the support plate is stabilized, The disk module can be stably supported.

In addition, since a drawer mechanism is not required, the disk module can be supported with a simple structure.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a schematic structure of a magnetic disk unit according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a schematic structure of the magnetic disk unit shown in FIG.

FIG. 3 is a schematic sectional view taken along the line AA in FIG.

FIG. 4 is a schematic block diagram showing a circuit configuration of the magnetic disk unit shown in FIG. 1;

FIG. 5 is a perspective view showing a schematic structure of a magnetic disk unit according to a second embodiment of the present invention, which corresponds to FIG. 1, and a cross section taken along line AA in FIG. 5 is shown in FIG.

6 is an exploded perspective view showing a schematic structure of the magnetic disk unit shown in FIG. 5 and corresponds to FIG.

7 is a schematic block diagram showing a circuit configuration of the magnetic disk unit shown in FIG. 5, and corresponds to FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic disk unit 2 Printed wiring board 2a Through hole (locking hole) 3 Disk module 3b Disk module side connector 4 Connector 5 Voltage conversion circuit 6 Display plate 7 Signal cable connector 8 Power cable connector 9 Support plate 9a Support protrusion 10 Disk stop Set screw 11 Brazing part 12a, 12b Power line 13 Signal line 14a, 14b Indicator lamp 15 Signal line 16 Indicator lamp

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hideki Fukasawa 3-18-21 Shibaura, Minato-ku, Tokyo F-term in NEC Engineering Corporation (reference) 5D001 AA06 CC01 JJ04

Claims (3)

[Claims] A recording medium, a medium driving means for driving the recording medium, a head for writing and reading information to and from the recording medium, and a head driving means for driving the head are housed in a casing. A magnetic disk unit incorporated in a magnetic disk device, comprising a disk module having a control circuit for controlling the operation of each of a medium driving unit, a head driving unit, and a head attached to the casing, wherein the disk module is mounted on a printed wiring board; A connector that is fixed and electrically connected to a printed circuit formed on the printed wiring board; and a connector that engages with and disengages from a connector provided on the magnetic disk device is provided at an end of the printed wiring board. Connection between the disk module and an appropriate circuit in the magnetic disk drive A magnetic disk unit characterized by the following. 2. The magnetic disk according to claim 1, wherein a pair of support plates are implanted on the printed wiring board, and a disk module is fixed to the support plate to be fixed to the printed wiring board. unit. 3. A locking hole is formed in the printed wiring board, a support projection inserted into the locking hole is formed on the support plate, and a portion of the support projection protruding from the locking hole is brazed to support. The magnetic disk unit according to claim 2, wherein the board is implanted on a printed wiring board, and a disk module is screwed to the support plate.