JP2760411B2 - Disk drive - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive device for recording and reproducing information by rotating a disk-shaped information recording medium such as a magnetic disk or an optical disk. .

2. Description of the Related Art A conventional magnetic disk drive of this type includes a chassis made of an aluminum alloy and a car that is supported so as to be able to move up and down with respect to the chassis and holds the disk cartridge when it is inserted into the device. A cartridge holder (hereinafter abbreviated as a holder), a turntable for mounting a magnetic disk housed in a disk cartridge case, and a spindle disposed on the bottom side of the chassis for driving the turntable to rotate. A motor, an upper magnetic head and a lower magnetic head for writing / reading a signal to / from both surfaces of a magnetic disk loaded on a turntable, and a hold rotatable while holding the upper magnetic head at a free end. A case, a carriage for holding the lower magnetic head and rotatably supporting the hold case 14; It is mainly composed of a scan Tetsu ping motor for transporting the radial direction of the magnetic disk to Tsuji.

The magnetic disk drive device is assembled and adjusted with respective dedicated parts in accordance with the product variation.

[Problems to be Solved by the Invention] By the way, in the above-mentioned prior art, since a dedicated part was required corresponding to a product variation, for example,
The types of components such as circuit boards and housings have increased, and management costs have also increased.

Also, when remodeling a product for Company A for Company B, reassembly and adjustment were necessary from the initial process.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the prior art, and has been made in order to solve the problem. The object of the present invention is to reduce the number of types of parts, reduce man-hours required for management, An object of the present invention is to provide a disk drive device that can quickly respond to specifications.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a disk drive device using an information recording disk formed in a disk shape, comprising: a rotation driving means for driving the information recording disk to rotate; A disk drive mechanism integrally having a head for writing and / or reading signals to and from the information recording disk, and mounting the information recording disk in the apparatus and discharging the information recording disk from the apparatus; The disk drive mechanism and the detachable mechanism are configured separately from each other, and the disk drive mechanism and the detachable mechanism are integrally fixed by using coupling means. .

[Operation] By the above means, the function assurance can be maintained by performing the adjustment work separately in the fixed part or the variable part. Therefore, even if the product type is different and the parts are different, the entire product is not assembled and adjusted, It can be dealt with simply by changing the variable part.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIGS. 1 (a) and 1 (b) are a plan view and a bottom view showing the upper and lower portions of a disk drive device with a lower cover removed, and FIGS.
(B), (c), (d), and (e) are a plan view, a side view, a front view, a bottom view, and a rear view with the upper and lower covers attached, and FIGS. ) And (c) are plan views of the fixing portion,
4 (a), 4 (b), and 4 (c) are explanatory views showing a method of assembling the variable portion, FIG. 5 is a plan view of the sub-chassis, and FIG. 6 is a plan view of a main portion of the substrate. FIG.

FIG. 1 shows an unloaded state of the magnetic disk drive. In FIG. 1, the magnetic disk drive 1 has a housing 3 made of an aluminum alloy and a side plate 5a, 5b of a sub-chassis 5 attached to the housing 3. Housing 3
A cartridge holder 7 for holding a disk cartridge (not shown) that accommodates a magnetic disk as an information recording disk formed in a disk shape and that is vertically movable with respect to the main body; A turntable 9 serving as a rotary drive for driving a magnetic disk housed in a case of a cartridge, and a turntable 9 serving as a rotary drive for the turntable 9 disposed on the bottom side of the housing 3 for driving the turntable 9 for rotation. A spindle motor 10, magnetic heads 11a and 11b for writing and / or reading signals to and from a magnetic disk loaded on the turntable 9, and magnetic head supporting means for supporting the magnetic heads 11a and 11b, respectively. The carriage 13 and the hold case 15 and the hold case 15 can swing freely. Stepping motor 17 for transporting the supported carriage 13 in the radial direction of the magnetic disk
And a carriage transfer device 19 including

Guide guide grooves 5c are formed on the inner surfaces of the side plates 5a and 5b of the sub-chassis 5 to guide the protrusions 7a provided on the side surfaces of the cartridge holder 7, and the cartridge holder 7 is attached to the housing 3 along the guides. On the other hand, it is possible to perform loading and unloading of the magnetic disk by moving substantially vertically. This movement is performed by a known cam mechanism which vertically moves in accordance with the operation of a slide plate 25 which can move in parallel along the upper surfaces of the housing 3 and the sub-chassis 5, and the cartridge holder 7 is in a loaded state. When the eject button 27 connected to the slide plate 25 is pushed in the depth direction A of the housing 3, the cartridge holder 7 is pushed upward, that is, in the unloading direction with the movement.

A recess 29 is formed in the cartridge holder 7 on the rear side of the chassis 3 from the turntable 9, and the hold case 15 can advance and retreat in the recess 29. The hold case 15 is always loaded with the carriage 13 by the load spring 30.
The load arm 33, which is elastically biased to the side and extends from the hold case 15, is brought into contact with one end of a later-described lever member interlocking with a damper 41 serving as a buffering means, so that the car of the hold case 15 is rotated. The raising / lowering operation of the trig holder 7, that is, the opening / closing (approach / separation) operation according to the operation of the slide plate 25 is performed.

A lock lever 35 is swingably supported by a support shaft 37 in a state where the lock lever 35 is always elastically urged in the eject direction by a rock spring 38 at a portion substantially below the center of the cartridge holder 7 in the drawing. The slide plate 25 is locked and held by the lock lever 35 at the unload position.

The damper 41 is filled with silicone oil inside,
The mounting plate 31 is attached to a side plate 31a of the mounting plate 31, and the mounting plate 31 is fixed to the bottom surface of the housing 3 with screws 32. This damper 41 has a pivoting lever that pivots on a pivot shaft that projects in the direction of the side plate 5a.
42 is fixedly provided, and furthermore, an engagement pin 43 is protruded from the free end side surface of the rotating lever 42, and this engagement pin 43 is provided on a cam portion having two steps formed on the side plate 26 of the slide plate 25. Is engaged. A hemispherical engaging protrusion 44 is provided downward at the free end of the rotating lever 42, and the engaging protrusion 44 is engaged with one end 45 a of the damper arm 45. The damper arm 45 pivotally contacts a support shaft 46 of the side plate 31a of the mounting plate 31 and the side plate 31c orthogonal to the side plate 31c to abut on the other end 45b of the damper arm 45 to move up and down. It can be adjusted. 49 is a torsion coil spring,
This torsion coil spring 49 is wound around a support shaft 46 and has one end 49 thereof.
a is engaged with the damper arm 45, and the other end 49b is
The damper arm 45 is connected to the bottom end of the support shaft 46 in FIG. 1 (a).
It is urged to lower 45b.

3 (a), 3 (b) and 3 (c) show a fixed part A which constitutes a disk drive mechanism for rotating the magnetic disk and writing and / or reading signals to and from the disk. The fixed part A includes a spindle motor 10 having a housing 3 and a turntable 9 on an upper surface, and a stepping motor for rotating and driving a screw shaft 20 having a screw groove 20a for transferring a carriage 13.
17, one side is engaged with the thread groove 20a, and the other side is a guide rod 21.
A carriage 13 that slides upward and a zero-track sensor 22 that detects the zero-track position on the disk of the magnetic head 11a provided at the tip of the carriage 13 are integrally provided. One side of the carriage 13 has a screw shaft 20
An engaging element 23 that engages with the screw groove 20a and a pressing plate for holding the screw shaft 20 opposed thereto are formed, and together with the guide rod 21, define the height of the carriage 13. The carriage 13 and a stepping motor 17 having a screw shaft 20 for driving the carriage 13 form a transfer mechanism 19 for the carriage 13.

FIGS. 4 (a), (b), (c), and FIG. 5 show a variable section which constitutes an attaching / detaching mechanism for mounting the disk cartridge in the apparatus and discharging the disk cartridge from the apparatus. B, the variable portion B is formed separately from the fixed portion A, and is assembled and adjusted separately from the fixed portion A. Slide plate in FIGS. 1 (a) and 4 (b)
25 is provided with side plates 26, 26 in which a guide groove 6 including an inclined cam portion 6a and a parallel cam portion 6b is formed. The slide plate 25 further includes positioning pins 4 of a disk cartridge protruding from the upper surface of a sub-chassis 5 described later,
And a guide groove 25a engaging with the guide pin 8 is formed,
The slide plate 25 is slidable along the guide groove 25a. The slide plate 25 is constantly urged toward the cartridge insertion side A by a slide spring 28.

As shown in FIGS. 4 (b) and 4 (c), a disk cartridge is inserted and the holder 7 holding the cartridge cartridge is connected to the U-shaped cartridge holding portion 7b on both sides and the cartridge holding portion 7b. The cartridge insertion opening is formed integrally with the upper surface portion 7c made of a thin plate, and is inserted into the cartridge insertion side A.
Has 7d. The cartridge holding portion 7b of the holder 7
A projection which engages with the guide groove 5c and the guide groove 6
7a are formed.

Next, the loading and unloading operations of the magnetic disk drive device 1 configured generally as described above will be described.

When a disk cartridge (not shown) is inserted from the unloaded state shown in FIG. 1 through the cartridge insertion slot 7d, the rotating end 51a of the eject lever 51 contacts the side surface of the shutter (not shown) at the tip of the disk cartridge. When the disk cartridge is pushed in, the eject lever 51 rotates about its support shaft 51b, and moves forward while the shutter is released by the rotating end 51a of the eject lever 51. When the disk cartridge is inserted to the innermost part of the cartridge holder 7, the tip of the disk cartridge comes into contact with the locking pin 36, and the locking plate 35 rotates around the support shaft 37 against the locking spring 38. At the same time, the lock of the slide plate 25 is released, and the slide plate 25 is moved downward (FIG. 1) by the elastic force of a spring (not shown).
To the front of the camera). This slide plate 25 and the lock plate
When 35 is released, the shutter is fully opened. Further, with the movement of the slide plate 25, the cartridge holder 7 moves vertically (downs) to the upper surface side of the housing 3 by the cam mechanism described above. At this time, since the load arm 33 of the hold case 15 is not in contact with the cartridge holder 7, the lowering operation of the holder case 15 is performed by the cartridge holder 7.
Not directly linked to the descent.

That is, the lowering operation of the hold case 15 is performed by moving the slide plate 25 which lowers the cartridge holder 7. That is, when the slide plate 25 moves downward in FIG. 1 from the unloaded state, the cartridge holder 7 descends as described above, and the rotation lever 42 engaged with the lower step portion of the slide plate 25 moves. At the time of unloading, the holding case 15 is
Is held at the upper position, but this is released, and the hold case 15 is lowered by the urging force of the load spring 30. Here, the load arm 33 of the hold case 15 and the engagement protrusion 44 of the rotation lever 42 are in contact with the other end 45b and one end 45a of the damper arm 45, respectively. The rotation is linked with the rotation. Accordingly, the damper arm 45 gradually rotates the rotation lever 42 against the viscosity of the silicon oil by the elastic force of the load spring 30 and the torsion coil spring 49,
Hold the holder 15 gradually according to its rotation.
Lower in 13 directions. In this way, the hold case
The magnetic head 11b on the 15 side, that is, the upper magnetic head, touches the magnetic disk, and the magnetic disk 11a, that is, the lower magnetic head on the carriage 13 side, sandwiches the magnetic disk, and enters a loading state. Thus, the loading of the magnetic disk is completed. The damper arm 45 is further rotated by the torsion coil spring 49 to separate the damper arm 45 and the load arm 33 from each other.
45 is abutted on the bent portion 31c of the mounting plate 31 and is stopped.

When the recording or reproduction is completed and the disk cartridge is taken out, an eject operation is performed. At this time, the above-described eject button 27 is set to the housing 3.
Then, the slide plate 25 also moves to the rear side accordingly, and the cartridge holder 7 moves upward (in the direction away from the chassis 3). By moving the slide plate 25 inward, that is, in the upward direction in FIG. 1, the engagement pin 43 engaged with the upper step is moved to and engaged with the lower step. As a result, the rotation lever 42 rotates, and the damper arm 45 that is in contact with the engagement protrusion 44 rotates against the torsion coil spring 49. Then
The other end 45b of the damper arm 45 rises to load arm 33.
And raises the hold case 15 via the load arm 33 against the load spring 30. In the unloaded state, the lock of the lock lever 35 is released by the movement of the slide plate 25 described above, and the lock lever 35 is rotated counterclockwise in FIG. 1 by the lock spring 38, and is slid by the rotation of the lock lever 35. The plate 25 is locked. At this time, the disk cartridge is moved in the anti-A direction by the movement of the lock pin 36 of the lock lever 35. Then, eject lever from the recess of the disk cartridge
Since the pivoting end 51b of the 51, that is, the shutter opening / closing pin is disengaged, the eject lever 51 is rotated counterclockwise by the eject spring 53 to close the shutter of the disk cartridge and move the disk cartridge downward. The cartridge is discharged from the cartridge insertion opening of the cartridge holder 7.

 Next, an assembling method will be described.

In this embodiment, the fixing portion A shown in FIGS.
Then, the disk drive device shown in FIGS. 1 (a) and 1 (b) is completed by assembling the variable portion B shown in FIG. 4 (c).

As described above, the fixed portion A includes a housing 3, a magnetic head assembly, a stepping motor 17, a spindle motor 10, a damper mechanism having a damper 41, a board 48 described later, a board 52 having a common circuit, a track 0 sensor 22, and the like. Alignment adjustment at this fixed part A,
All the adjustments such as index adjustment and track φ adjustment are performed to guarantee the function. In other words, these components are common parts in the product variation of the disk drive device, and therefore, the fixed part A is required for each product specification.
Can be shared. Incidentally, as shown in FIG. 6, the substrate 48 has a circuit configuration capable of responding to each product variation. That is, a connection portion 48a for connecting a circuit pattern is provided on the substrate 48 as needed, and a predetermined circuit pattern is obtained by conducting the necessary connection portion 48a by soldering according to each product variation. Can be.

On the other hand, the variation B is configured by incorporating different components depending on the product variation. For example, the eject mechanism, the mounting plate 47, the shield cover 50, the LED 54, the bezel, the eject button 27, and other product options ( Auto-eject mechanism, bezel shape, 525 "adapter, etc.).

The assembling of the movable portion B is performed by adding a guide pin 8, a positioning pin 4, and a locking pin 3 to the sub-chassis 5 shown in FIG.
6. The lock plate 35, the support shaft 37, and the lock spring 38 are mounted, and the slide plate 25 is slidably mounted on the sub-chassis 5. The guide pin 8 and the positioning pin 4 of the sub-chassis 25 are fitted and fitted into the enlarged diameter portion of each guide groove 25a of the slide plate 25, and a slide spring 28 is stretched between the slide plate 25 and the sub-chassis 5. The locking plate urged in the counterclockwise direction by the locking spring 38
By rotating 35 in the clockwise direction against the rock spring 38, the distal end 35 a of the lock plate 35 is retracted from the movement path of the projecting piece 25 b of the slide plate 25, and the slide plate 25 is moved to the slide spring 38. Slide upward against
Guide pins 8 are provided on both sides of each guide groove 25a of slide plate 25.
And the positioning pins 4 are inserted into the annular grooves 8a, 4a. Then, by returning the lock plate 35 in the counterclockwise direction, the protruding piece 25b of the slide plate 25 is moved to the inner edge of the distal end portion 35a of the lock plate 35.
It comes in contact with 35b and stops.

After the sub-chassis 5 and the slide plate 25 are assembled, the cartridge holder 7 is assembled. First, the projection 25 of the slide plate 25 is
When a is in contact with the inner edge 35b of the tip 35a of the locking plate 35, the projection 7a on the cartridge insertion port side of the projections 7a on both sides of the holder 7 projects inside the both side plates 5a and 5b of the sub-chassis 5. Guide groove of the slide plate 25 by the projected portion 5e
Insertion into 6a is prevented. When the slide plate 25 is pushed in the direction of arrow A against the slide spring 28, the entrance of the guide groove 6a on the cartridge insertion side of the slide plate 25 is a portion of the sub-chassis 5 without the protruding portion 5e (a guide groove 5c). Then, the projection 7a of the cartridge holder 7 can be fitted into the guide groove 6a of the slide plate 25,
It can also be fitted into the guide groove 5c that guides in the vertical direction (the direction perpendicular to the drawing). When the pushing of the slide plate 25 in the direction of arrow A is stopped, the slide spring 28
As a result, the slide plate 25 is pushed back in the anti-A direction, and
Is brought into contact with the inner edge portion 35b of the front end portion 35a of the locking plate 35 and stops. In this state, since the protrusion 7a of the cartridge holder 7 is restricted from moving in the direction A by the guide groove 5c,
The projection 7a fitted in the guide groove 5c enters the guide groove 6a from the entrance of the guide groove 6a of the slide plate 25, and the cartridge holder 7 is held on the slide plate 25 by the guide groove 6a. A variable portion B shown in (c) is obtained.

The variable portion B shown in FIG.
(C) is integrally fastened and fixed to the fixing portion A by a mounting screw 55 as a connecting means. At this time, the positioning of the variable portion B with respect to the fixed portion A is performed by fitting the positioning protrusion 5d of the subchassis 5 that is the variable portion B into the positioning recess 3a of the housing 3 that is the fixed portion A. Reference numeral 56 denotes a hole into which a driver for tightening the mounting screw 55 is inserted.

In the above embodiment, since the function assurance can be maintained by separately performing adjustment work in the fixed part A or the variable part B, the entire product is assembled and adjusted even if the product type is different and the parts are different. This can be dealt with simply by changing the variable portion B.

Therefore, even if the number of product variations is large, it is possible to provide a disk drive device which can reduce the number of management steps by reducing the types of parts and can quickly respond to specifications required by customers.

[Effects of the Invention] As described above, according to the present invention, the disk drive mechanism unit having the rotary drive unit and the head integrally,
Prior to the process of integrally fixing the disk drive mechanism and the detachable mechanism, the positional relationship with the rotary drive can be adjusted before ordering, so after the order is received, the disk drive mechanism and the disk drive mechanism are fixed together By simply doing so, it is possible to reduce the time required to adjust the positional relationship between the rotary drive means and the head after receiving an order, improve productivity, and provide products to customers in a short time after receiving the order. In addition, even if the structure and configuration of the attachment / detachment mechanism differ depending on the product variety, the disk drive mechanism can be shared and the disk drive mechanism can be manufactured in the same process, improving productivity. Can be done.

[Brief description of the drawings]

The drawings are all for explaining one embodiment of the present invention,
1 (a) and 1 (b) are a plan view and a bottom view showing the upper and lower parts of a disk drive device with a lower cover removed, and FIGS.
(B), (c), (d), and (e) are a plan view, a side view, a front view, a bottom view, and a rear view with the upper and lower covers attached, and FIGS. ) And (c) are plan views of the fixing portion,
4 (a), 4 (b), and 4 (c) are explanatory views showing a method of assembling the variable portion, FIG. 5 is a plan view of the sub-chassis, and FIG. 6 is a plan view of a main portion of the substrate. FIG. 1 ... magnetic disk drive, 3 ... housing, 5 ...
... Sub-chassis, 7 ... Cartridge holder, 9 ... Turntable, 10 ... Spindle motor, 13 ... Carriage, 15 ... Hold case, 17 ... Stepping motor, 19 ... Transfer mechanism, 25 ... Slide Plate, 35 ... Rock plate, 48, 52 ... Board, 51 ... Eject lever, A ...
Fixed part, B ... variable part.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Minoru Hiwatari, Inventor Minoru 1-7 Yukiya Otsukacho, Ota-ku, Tokyo Alps Electric Co., Ltd. (72) Inventor Sadahiro Takahashi 1-7 Yukitani Otsukacho, Ota-ku, Tokyo Al (72) Inventor Atsushi Takahashi 5-30-23 Higashi Sendai, Miyagino-ku, Sendai City, Miyagi Prefecture (56) References JP-A-2-128390 (JP, A)

Claims (1)

(57) [Claims] 1. A disk drive device using an information recording disk formed in a disk shape, comprising: a rotation driving means for driving the information recording disk to rotate; and writing and / or reading signals to and from the information recording disk. A disk drive mechanism unit having a head integrally therewith; a detachable mechanism unit for mounting the information recording disk in the apparatus and discharging the information recording disk from the apparatus, wherein the disk drive mechanism unit and the detachable mechanism unit And a disk drive mechanism, wherein the disk drive mechanism and the attachment / detachment mechanism are integrally fixed using a connecting means.