JPH04162284A - Disk driver - Google Patents

Abstract

PURPOSE:To reduce the number of control steps and to rapidly meet client request specifications by separately regulating a variable section composed of special components different according to the type of a product and a stationary section composed of common components to be assembled. CONSTITUTION:A stationary section A is composed of a housing 3, a magnetic head assembly, a stepping motor 17, a spindle motor 10, etc., while a variable section b is composed of components different according to a product variation to be incorporated, such as, an ejecting mechanism, a mounting plate 47, an eject button 27, and other product options, etc. Regulations are separately conducted in the sections A and B to maintain a functional assurance. Accordingly, even if the type of the product is different and the components are different, only the section B may be altered in processing. Thus, the number of control steps can be reduced, and client request specifications can be rapidly coped with.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disk rotating device for recording and reproducing information by rotationally driving an information recording medium formed in a disk shape, such as a magnetic disk or an optical disk. .

[Prior Art] A conventional magnetic disk drive device of this type includes a chassis made of aluminum alloy, and a cartridge holder that is supported to be movable up and down with respect to the chassis and holds a disk cartridge when it is inserted into the device. (hereinafter abbreviated as holder), a turntable for mounting a magnetic disk housed in the case of the disk cartridge, and a spindle motor disposed on the bottom side of the chassis to rotationally drive the turntable. an upper magnetic head and a lower magnetic head that write/read signals on both sides of a magnetic disk loaded on a turntable; a hold case that holds the upper magnetic head at a free end and is rotatable; It mainly consists of a carriage that holds the lower magnetic head and rotatably supports the hold case 14, and a stepping motor that moves the carriage in the radial direction of the magnetic disk.

The above-mentioned magnetic disk drive devices are assembled and adjusted using dedicated parts for each product variation.

[Problems to be Solved by the Invention] By the way, the above-mentioned conventional technology requires specialized parts to correspond to product variations, which increases the number of types of parts such as circuit boards and housings, and increases management costs. was.

Also, when company A modifies its products for use by eight companies.

Reassembly and adjustment were required from the initial process.

The present invention was developed in view of the above-mentioned problems of the prior art, and its purpose is to reduce the number of parts and management man-hours even if there are many product variations, and to meet customer requirements. The object of the present invention is to provide a disk drive device that can quickly respond to the following problems.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a cartridge holder that holds a disk cartridge containing a disk-shaped information recording disk, and a cartridge holder that is moved up and down. , an elevating means for loading and unloading the information recording disk in the held disk cartridge onto the turntable, a rotation driving means for rotationally driving the turntable, and a writing signal on the information recording disk. and/or a head that performs reading, a head support means that supports this head and supports it so that it can move toward and away from the information recording disk, and a head transport means that moves the head support means in the radial direction of the information recording disk. A magnetic disk drive device comprising: a variable part mainly composed of special parts that differ depending on the product type; and a fixed part mainly composed of parts common to different product types; The structure is such that the variable part and the fixed part are assembled by adjusting the variable part or the fixed part separately.

[Function] With the above means, it is possible to maintain functional guarantee by performing adjustment work on the fixed part or the variable part separately, so even if the product type is different and one part is different, the variation can be adjusted without assembling or adjusting the entire product. This can be done by simply changing the part.

[Implementation M] An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1(a) and 1(b) are a plan view and a bottom view of the disk drive with the upper and lower covers removed, and FIG. 2(a) is a top view of the disk drive.

(b), (C), (d), and (e) are a plan view, side view, front view, bottom view, and rear view with the upper and lower covers attached; Figures 3 (a) and (b) ), (c)
Figure 4(a) is a plan view, bottom view, and rear view of the fixing part.
, (b) and (c) are explanatory diagrams showing a method of assembling the variable part, FIG. 5 is a plan view of the sub-chassis, and FIG. 6 is a plan view of the main part of the board.

FIG. 1 shows the unloaded state of the magnetic disk drive device, and in the same figure, the magnetic disk drive device 1 has a housing 3 made of aluminum alloy and a side plate 5a, 5b of a subchassis 5 attached to this housing 3. A cartridge holder 7 is supported to be vertically movable with respect to the main body of the housing 3 and holds a disk cartridge (not shown) inserted from a cartridge insertion opening, and a cartridge holder 7 is exposed on the upper surface of the housing 3 and is housed in a case of the disk cartridge. a turntable 9 for rotationally driving a magnetic disk; a spindle motor 10 serving as a rotational driving means for the turntable 9 (not shown) disposed on the bottom side of the housing 3 for rotationally driving the turntable 9; A magnetic head lla, which will be described later, writes and/or reads signals to and from a magnetic disk.

11b, a carriage 13 serving as a magnetic head support means that supports these magnetic heads lla and llb, and a hold case 15, and a carriage 13 that swingably supports the hold case 15, in the radial direction of the magnetic disk. The carriage transport device 119 includes a stepping motor 17.

A guide groove 5c is formed on the inner surface of the side plates 5a and 5b of the sub-chassis 5 to guide a protrusion 7a provided on the side surface of the cartridge holder 7, and the cartridge holder 7 is moved along this guide toward the main body of the housing 3. It is possible to load and unload magnetic disks by moving approximately vertically. This movement is performed by a known cam mechanism that moves vertically in accordance with the operation of a slide plate 25 that is movable in parallel along the upper surfaces of the housing 3 and subchassis 5, and when the cartridge holder 7 is in the loaded state, it slides. The eject button 27 connected to the plate 25 is moved in the depth direction A of the housing 3.
When the cartridge holder 7 is pushed in, the cartridge holder 7 is pushed upward, that is, in the unloading direction.

A recess 29 is formed in the cartridge holder 7 on the back side of the chassis 3 from the turntable 9, and the hold case 15 can move forward and backward within the recess 29. The hold case 15 is always elastically biased toward the carriage 13 by a load spring 30.
By bringing the load arm 33 extending from the holding case 15 into contact with one end of a lever member, which will be described later, and which is linked to a damper 41 serving as a buffer means, the cartridge holder 7 of the hold case 15 is moved up and down, that is, the slide plate 25 is moved. Opening/closing (approaching/separating) operations are performed according to the movement.

A lock lever 35 is swingably supported by a support shaft 37 at a portion of the cartridge holder 7 approximately at the lower center in the figure, with the lock lever 35 always being elastically biased in the ejection direction by a lock spring 38. Slide plate 25 by lock lever 35
is locked and held in the unloaded position.

The damper 41 is filled with silicone oil,
Attached to the side plate 31a of the mounting plate 31, this mounting plate 31
is fixed to the bottom of the chassis 3 with screws 32. A rotary lever 42 is fixed to the damper 41 on a rotary shaft protruding toward the side plate 5a, and an engaging pin 43 is protruded from the free end side of the rotary lever 42. It is engaged with a cam portion having two steps formed on the side plate 26 of the slide plate 25. Further, a hemispherical engagement protrusion 44 is provided at the free end of the rotary lever 42 facing downward, and this engagement protrusion 44 is engaged with one end 45a of the damper arm 45. This damper arm 45 is attached to the mounting plate 3 mentioned above.
The damper arm 45 is rotatably abutted on the other end 45b of the damper arm 45 on a support shaft 46 of the side plate 31b disposed orthogonally to the side plate 31a of the damper arm 45, so that the positional relationship between the damper arm 33 and the load arm 33 that moves up and down can be adjusted. . The torsion coil spring 49 is wound around the support shaft 46, one end 49a of which is engaged with the damper arm 45, and the other end 49a of the torsion coil spring 49.
b is engaged with the bottom plate portion of the mounting plate 31, so that the damper arm 45 is attached to the support shaft 46 in FIG. 1(a).
The other end 45b is biased in a direction to lower the other end 45b.

3(a), (b), and (c) show a fixed part A, which includes a housing 3, a spindle motor 10 with a turntable 9 on the upper surface, and a carriage 1.
A stepping motor 17 rotates a screw shaft 20 formed with a thread groove 20a for transferring the
and the - side engages with the thread groove 20a.

The main components include a carriage 13 whose other side slides on a guide rod 21, and an O-track sensor 22 that detects the 0 track position on the disk of the magnetic head lla provided at the tip of the carriage 13. It is formed of an engaging element 23 that engages with the thread groove 20a of the screw shaft 20 on one side of the carriage 13, and a holding plate opposing the engaging element 23 for holding the screw shaft 20, and the guide rod 2
1 and defines the height of the carriage 13.

A transport mechanism 19 for the carriage 13 is formed by the carriage 13 and a stepping motor 17 having a screw shaft 20 for driving the carriage.

4(a), (b), (c), and FIG. 5 show the variable part B, which is assembled separately from the above-mentioned fixed part A.

tAW is performed. In FIG. 1(a) and FIG. 4(b), the slide plate 25 is provided with side plates 26, 26 in which a guide groove 6 consisting of an inclined cam portion 6a and a parallel cam portion 6b is formed. This slide plate 25 is further formed with a guide groove 25a that engages with a disk cartridge positioning pin 4 and a guide pin 8 protruding from the upper surface of the sub-chassis 5, which will be described later. 2
It can be slid along 5a. Also, slide plate 2
5 is always urged toward the cartridge insertion side A by a slide spring 28.

As shown in FIGS. 4(b) and 4(C), the holder 7 into which the disk cartridge is inserted has a U-shaped cartridge holding portion 7b on both sides, and a thin plate connecting the cartridge holding portions 7b. The cartridge insertion side A is provided with a cartridge insertion lower d. The cartridge holding portion 7b of the holder 7 is further formed with a projection 7a that engages with the guide groove 5c and the guide groove 6.

Next, the loading and unloading operations of the magnetic disk drive device 21 roughly configured as described above will be described.

When a disk cartridge (not shown) is inserted from the unloaded state shown in FIG.
When the rotating end 51a of the eject lever 51 comes into contact with the disk cartridge and the disk cartridge is further pushed in, the eject lever 51 moves to its pivot 51b.
The eject lever 51 rotates around the eject lever 51, and the shutter is released by the rotating end 51a of the eject lever 51 and advances to the back.

When the disk cartridge is inserted to the innermost part of the cartridge holder 7, the tip of the disk cartridge contacts the lock pin 36, and the lock plate 35 rotates around the support shaft 37 against the lock spring 38. At the same time, the slide plate 25 is unlocked, and the slide plate 25 is moved downward in FIG. 1 (towards the front of the magnetic disk annotation device 1) by the elastic force of a spring (not shown). This slide plate 25 and lock plate 3
5 is released, the shutter becomes fully open. Also.

As the slide plate 25 moves, the cartridge holder 7 is vertically moved (descended) toward the upper surface of the housing 3 by the aforementioned cam mechanism. At this time, the load arm 33 of the hold case 15 is in contact with the cartridge holder 7. Therefore, the lowering operation of the hold case 15 is not directly linked to the lowering operation of the cartridge holder 7.

That is, the lowering operation of the hold case 15 is performed by the movement of the slide plate 25 that 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 slide plate 25
During unloading, the hold case 15 was held in the upper position by the engagement pin 43 of the rotary lever 42, which was engaged with the lower step of the rotary lever 42, and the step, but this is released. , and the hold case 15 is lowered by the biasing force of the load spring 30.

Here, the load arm 33 of the hold case 15 and the engagement protrusion 44 of the rotary lever 42 are in contact with the other end 45b and one end 45a of the damper arm 45, respectively, so that the hold case 15 can be lowered and the rotary lever 42 can be lowered. It is linked to rotation. Therefore, the damper arm 45 gradually rotates the rotary lever 42 against the viscosity of the silicone oil by the elastic force of the load spring 30 and the torsion coil spring 49, and the hold case 15 gradually rotates in accordance with the rotation. The carriage is lowered in the direction of 13. In this way,
The magnetic head llb on the hold case 15 side, that is, the upper magnetic head touches the magnetic disk, and the carriage 13
A magnetic disk is sandwiched between the side magnetic head lla, that is, the lower magnetic head.

It will be in a loading state. In this way, loading of the magnetic disk is completed. Furthermore, damper arm 45
is further rotated by the torsion coil spring 49 to separate the damper arm 45 and the load arm 33, and the damper bar arm 45 is stopped in contact with the bent portion 31c of the mounting plate 31.

When recording or playback is finished and the disc cartridge is taken out, an eject operation is performed.
When the cartridge holder 7 is pushed to the back side, the slide plate 25 also moves to the back side, and the cartridge holder 7 is moved upward (
(in the direction away from the chassis 3). By moving this slide plate 25 to the back side, that is, to the first @ upward direction,
The engagement pin 43 that was engaged with the upper step is moved to and engaged with the lower step. As a result, the rotary lever 42 rotates, and when the damper arm 45 in contact with the engaging protrusion 44 is rotated against the torsion coil spring 49, the other end of the damper arm 45 is rotated. 45b rises and comes into contact with the load arm 33, causing the hold case 15 to rise against the load spring 30 via the load arm 33. When the unloading state is reached, the lock lever 35 is unlocked by the movement of the slide plate 25 described above, and the lock lever 35 is moved by the lock spring 38.
The lock lever 3 rotates counterclockwise in Figure 1.
5, the slide plate 25 is locked. At this time, the disk cartridge is moved in the opposite direction by the movement of the lock pin 36 of the lock lever 35. This causes the rotating end 51b of the eject lever 51, that is, the shutter opening/closing pin, to come off from the recess of the disk cartridge.

The eject lever 51 is rotated counterclockwise by the eject spring 53, the shutter of the disk cartridge is closed, and the disk cartridge is moved downward and ejected from the cartridge insertion opening of the cartridge holder 7.

Next, the assembly method will be explained.

In this example, by assembling the fixed part A shown in FIGS. 3(a) to (c) and the variable part B shown in FIG. 4(C), The disk translation device is completed.

As described above, this fixed part A includes the housing 3, the magnetic head assembly, the stepping motor 17, the spindle motor 10. It is composed of a damper mechanism having a damper 41, a board 48 (described later), a board 52 with a common circuit, a track O sensor 22, etc., and this fixed part A performs alignment adjustment, index! Perform all *i such as gW and track φ adjustment to guarantee functionality. In other words, since these components are common among product variations of the disk rolling device, the fixing part A can be made common to each product specification. As shown in FIG. 6, this board 48 has a circuit configuration that can be adapted to various product variations. In other words, connection parts 48a are provided on the board 48 to connect circuit patterns as necessary, and the connection parts 48a are provided as necessary for each product variation.
A can be made conductive by soldering to obtain a predetermined circuit pattern.

On the other hand, the variable part B is configured by incorporating different parts depending on the product variation, and includes, for example, an eject mechanism, a mounting plate 47, a shield cover 50, and an LED.
54, bezel, eject button 27, other product options (auto eject mechanism, bezel shape, 525"
There are adapters, etc.).

The assembly of this variable part B consists of a sub-chassis 5, a guide pin 8, a positioning pin 4, and a lock pin 36 as shown in FIG.
, a lock plate 35, a support shaft 37, and a lock spring 38 are attached, and a slide plate 25 is slidably attached to this sub-chassis 5. Each guide groove 25 of this slide plate 25
The guide pin 8 and positioning pin 4 of the sub-chassis 25 are fitted into the enlarged diameter portion of the sub-chassis 25, and the slide spring 28 is stretched between the slide plate 25 and the sub-chassis 5ral. Then, by rotating the lock plate 35, which is biased counterclockwise by the lock spring 38, in the clockwise direction against the lock spring 38, the tip 35a of the lock plate 35 is moved from the slide plate 25. The protruding piece 25b is moved away from the moving path, and the slide plate 25 is slid upward against the slide spring 38.
Insert both side edges of each guide groove 25a into the annular grooves 8a and 4a of the guide bin 8 and the positioning pin 4. Then, by returning the lock plate 35 in the counterclockwise direction, the projection 25b of the slide plate 25 is brought into contact with the inner edge 35b of the tip 35a of the lock plate 35, and is prevented from coming off.

In this way, when the sub-chassis 5 and the slide plate 25 are assembled, the cartridge holder 7 is next assembled. 35b, of the protrusions 7a on both sides of the holder 7, the protrusions 7a on the cartridge insertion opening side are in contact with the side plates 5a of the sub-chassis 5.

The slide plate 25 is prevented from fitting into the guide groove 6a by a protrusion 5e protruding inwardly from the slide plate 5b. When the slide plate 25 is pushed in against the slide spring 28 in the direction of the six arrows, the entrance of the guide groove 68 on the cartridge insertion side of the slide plate 25 is aligned with the part of the sub-chassis 5 without the protrusion 5e (guide #It5C). ), the projection 7a of the cartridge holder 7 can be fitted into the guide groove 6a of the slide plate 25, and the projection 7a of the cartridge holder 7 can be fitted into the guide groove 6a of the slide plate 25, and
It can also be fitted into a guide groove 5C for guiding in a direction perpendicular to the drawing. When the slide plate 25 is stopped from being pushed in the six directions of the arrows, the slide spring 28 pushes the slide plate 25 back in the direction of the shakuhachi, and the protrusion 25b
is brought into contact with the inner edge 35b of the tip 35a of the lock plate 35 and stopped. In this state, the protrusion 7 of the cartridge holder 7
Since the movement of a in the A direction is restricted by the guide jli 5c, the protrusion 7a fitted into the guide groove 5c enters the guide groove a from the entrance of the guide groove 6a of the slide plate 25, and also moves into the guide groove 6a. As a result, the cartridge holder 7 is held by the slide plate 25 to obtain the variable part B shown in FIG. 4(C).

The variable part B shown in FIG. 4(C) is shown in FIGS. 3(a) to (C).
) is attached to the fixing part A shown in FIG.

At this time, the positioning of the variable part B with respect to the fixed part A is performed by fitting the positioning protrusion 5d of the sub-chassis 5, which is the variable part B, into the positioning recess 3a of the housing 3, which is the fixed part A.

Incidentally, reference numeral 56 is a hole into which a screwdriver for tightening the screw 55 is inserted.

In the above embodiment, since the function guarantee can be maintained by performing adjustment work on the fixed part A or the variable part B separately, even if the product type is different and the parts are different, the entire product can be assembled and sii* Without a word.

This can be handled by simply changing the variable part B.

Therefore, even if there are many product variations.

It is possible to provide a disk drive device that can reduce the number of parts, reduce management man-hours, and quickly respond to customer specifications.

[Effects of the Invention] As explained above, according to the present invention, even if there are many product variations, it is possible to reduce the number of parts, reduce management man-hours, and create a disk drive device that can quickly respond to customer specifications. can be provided.

[Brief explanation of the drawing]

All drawings are for explaining one embodiment of the present invention.
Figures 1 (a) and (b) are top and bottom views of the disk drive with the upper and lower covers removed, and Figures 2 (a) and (b).
), (c), (d), (e) are the plan view, side view, front view, bottom view, and rear view with the upper and lower covers installed, and Figure 3 (a), (b), (C) is a plan view, bottom view, and rear view of the fixing part, Figure 4 (a),
(b) and (c) are explanatory diagrams showing a method of assembling the variable part, FIG. 5 is a plan view of the sub-chassis, and FIG. 6 is a plan view of the main part of the board. 1...Magnetic disk drive, 3...
Housing, 5...Subchassis, 7...
...Cartridge holder, 9...Turntable, 10...Spindle motor, 13...
... Carriage, 15 ... Hold case, 17
...Spindle motor, 19...Transfer mechanism, 25...Slide plate, 35...
Lock plate, 48.52... Board, 51...
・・Eject lever, A・・Fixed part, B・・・
...Variable part. Figure 1 Figure 7 Figure 792 tcノ! Figure 21 td Noah (e) Figure 3 Figure 3 (b) Figure 3 (C) 17. 5 Figure 4 Wi4 Figure tb! Figure J4 (C) -ra' Figure 6

Claims (1)

[Claims] A cartridge holder that holds a disk cartridge containing a disk-shaped information recording disk, and a cartridge holder that is moved up and down to load the information recording disk in the held disk cartridge onto a turntable. In addition, there is an elevating means for unloading from the turntable, a rotary drive means for rotationally driving the turntable, a head for writing and/or reading signals on and/or from an information recording disk, and a head for supporting the head and for storing information. In a magnetic disk drive device equipped with a head support means that supports the recording disk so as to be able to move toward and away from the recording disk, and a head transport means that moves the head support means in the radial direction of the information recording disk, special parts that differ depending on the product type are used. It has a variable part mainly composed of parts, and a fixed part mainly composed of parts that are common even if the product type is different, and the variable part or the fixed part can be adjusted separately to A disk drive device characterized in that a part and a fixed part are assembled together.