JP2558604Y2 - Disk drive - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive, and more particularly, to a disk drive used by mounting a disk cartridge containing a magnetic disk as an information recording medium.

[0002]

2. Description of the Related Art A conventional disk drive of this type includes a lower cover, a chassis made of an aluminum alloy, a cartridge holder supported by the chassis so as to be able to move up and down, and holding a disk cartridge when it is inserted into the apparatus. A turntable for mounting the magnetic disk housed in the case of the disk cartridge, a spindle motor disposed on the bottom side of the chassis for rotating the turntable, and a back yoke attached to the spindle motor. , A printed circuit board connected to the spindle motor,
An upper magnetic head and a lower magnetic head for writing / reading signals to / from both surfaces of a magnetic disk loaded on a turntable; a hold case rotatable while holding the upper magnetic head at a free end; It mainly comprises a carriage that holds the lower magnetic head and rotatably supports the hold case, and a stepping motor that moves the carriage in the radial direction of the magnetic disk.

The raising and lowering operation of the cartridge holder is performed by a known cam mechanism interlocked with the operation of a movable slide plate. That is, when the disk cartridge is inserted to the innermost portion in the cartridge holder, the eject arm is locked by the lock lever with the shutter of the disk cartridge opened, and at the same time, the slide plate is unlocked, and the elastic force of the spring is released. As a result, the slide plate moves to the cartridge insertion port side, and with this movement, the cam mechanism lowers the cartridge holder to the load position. Also, when the eject button connected to the slide plate is pushed in when the cartridge holder is at the load position, the cartridge holder is raised by the cam mechanism as the slide plate moves to the back side, and the lock lever and The eject arm rotates and the disk cartridge moves to the cartridge insertion port side with the shutter closed, and is ejected from the cartridge insertion port to the outside of the apparatus.

[0004]

The disk drive of this type is required to be thin. However, if the thickness of the disk drive is reduced, the distance between the disk cartridge and the upper and lower magnetic heads is reduced. As approaching, the upper and lower pieces of the shutter of the disk cartridge are opened, and the edges thereof hit the upper and lower magnetic heads.
In addition to damaging the upper magnetic head, there is a possibility that the loading operation may not be performed smoothly, which has been an obstacle to thinning.

The present invention has been made in view of such circumstances, and an object of the present invention is to achieve a smooth loading operation without opening the upper and lower pieces of the shutter of a disk cartridge, thereby achieving a reduction in thickness. It is to provide a disk drive device which can be used.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to accommodate an information recording disk and remove the information recording disk.
A case having an opening that is exposed in the part, and an end of the case.
A shutter reciprocally mounted on the outside and covering the opening.
Disk drive that uses a disk cartridge with
A braking system, lifting of the cartridge holder for holding the disk cartridge, the cartridge holder is moved up and down, the information recording disc of the retaining disc cartridge loaded on a turntable, also be unloaded from the turntable Means, a rotary drive means for rotatingly driving the turntable, upper and lower heads for writing and / or reading signals to and from the information recording disk, and supporting the upper and lower heads and freely moving toward and away from the information recording disk supporting the upper and lower head support means, provided in said cartridge holder, said information
The path of the upper and lower heads moving in the radial direction of the information recording disk
In the disk drive apparatus example and Bei opening constituting,
Both edges of the opening in the moving direction of the upper and lower heads
The floating of the shutter comes into contact with the shutter
This is achieved by a first means in which a restricting portion for restricting the pressure is formed. The purpose of the present invention described above is to use an information recording disc.
Has an opening for storing and exposing the information recording disk to the outside
Case, and reciprocally attached to the outside of the end of the case
And a shutter covering the opening
A disk drive using a cartridge, a cartridge holder for holding the disk cartridge,
Lifting and lowering means for moving the cartridge holder up and down, loading the information recording disk in the disc cartridge held on the turntable, and unloading from the turntable; rotation driving means for rotating the turntable; and information recording upper and lower head for writing and / or reading of the signal to the disk, and the vertical head support means for supporting the movable toward and away from the information recording disk while supporting the upper and lower heads, the upper and lower heads
Drive means can be moved in the radial direction of the information recording disk
To the turntable and to the turntable
And the information holder provided on the cartridge holder.
The path of the upper and lower heads that move in the
A disk drive device having an opening formed therein;
Facing the side of the opening in the direction of movement of the upper and lower heads
Raise the cartridge holder on the chassis
Direction, and comes into contact with the shutter to
This is achieved by a second means in which a holding member for holding up the lift of the tab is formed.

An object of the present invention is to provide a cartridge holder for holding a disk cartridge containing an information recording disk formed in the shape of a disk, and to move the cartridge holder up and down to move the information recording disk in the held disk cartridge. Lifting means for loading on the turntable and unloading from the turntable, and rotation driving means for rotating the turntable,
Upper and lower heads for writing and / or reading signals to and from the information recording disk, upper and lower head supporting means for supporting the upper and lower heads and supporting the information recording disk so as to be able to approach and separate therefrom, and a cartridge holder. A disc drive provided with an opening through which the upper and lower heads enter and exit, and a shutter provided in a cartridge holder for opening and closing the opening, wherein a presser for holding up the lower shutter piece of the shutter of the disc cartridge; This is achieved by a second means provided with members.

[0008]

According to the first means, since the magnetic head protection wall 79 and the restricting portion 80 for the shutter 59 are integrally formed on the cartridge holder 15 in a series, the upper surface piece 81 of the shutter 59 of the disk cartridge 14 has conventionally been formed. When the disk drive device 1 is opened, the edge of the disk drive device 1 may hit the upper magnetic head 9 to damage the shutter 59 and the upper magnetic head 9 and the loading operation may not be performed smoothly. However, the above-described risk is increased, which is an obstacle to thinning.
The upper surface piece 81 of the shutter 59 of the disk cartridge 14 is pressed by the restricting portion 80 for the shutter 59 provided in the disk cartridge 14, and the loading operation can be performed without damaging parts by hitting the upper magnetic head 9 without opening the shutter 59. It can be done smoothly.

According to the second means, since the pressing member 83 for pressing the lower surface piece 82 of the shutter 59 of the disk cartridge 14 is provided, the lower member 82 of the shutter 59 of the disk cartridge 14 is pressed by the pressing member 83, The loading operation can be performed smoothly without damaging the components by hitting the lower magnetic head 8 without opening.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 23 illustrate a disk drive according to an embodiment of the present invention. FIG. 1 is a plan view showing a disk drive according to an embodiment of the present invention.
2 is a plan view showing the cartridge holder and the disk cartridge of the disk drive device according to one embodiment of the present invention, and FIG. 3 is a plan view showing the disk drive device according to one embodiment of the present invention with the cartridge holder removed. 4 (a), 4 (b) and 4 (c) are explanatory views showing the operation of inserting the disk cartridge of the disk drive device according to one embodiment of the present invention, and FIGS. 5 (a) and 5 (b) are the present invention. FIGS. 6A and 6B are side views and plan views of a main part showing a guide state of a cartridge holder of the disk drive device according to one embodiment of the present invention. FIGS. FIG. 7 is a side view and a plan view of a main part showing a guide state.
FIG. 8 is an explanatory view showing a carriage driving mechanism portion of the disk drive device according to one embodiment of the present invention. FIG. 8 is an exploded perspective view of the disk drive device according to one embodiment of the present invention. Exploded perspective view of the disk drive device according to FIG.
(A), (b) is an explanatory view showing the unloading and loading states of the disk cartridge holding mechanism portion of the disk drive according to one embodiment of the present invention, and FIG. 11 is a disk drive according to one embodiment of the present invention. FIG. 12 is a vertical sectional view of a disk drive device according to an embodiment of the present invention in the direction of a spindle motor and a carriage, and FIG. 13 is an explanatory view showing an arrangement of a flexible printed circuit (FPC). FIG. 14 is a longitudinal sectional view showing a spindle motor-circuit element direction of the disk drive device, FIG. 14 is a longitudinal sectional view showing an FPC holding state of the disk drive device according to an embodiment of the present invention, and FIG. 15 is an embodiment of the present invention. FIG. 16 is a longitudinal sectional view of the vicinity of the spindle motor of the disk drive device according to the third embodiment.
(A), (b) is an explanatory view showing a state before and after FPC connection of a disk drive according to an embodiment of the present invention, and FIG. 17 shows a connector of the disk drive according to an embodiment of the present invention. FIG. 18 is an explanatory view showing the principle of oblique insertion in the disk drive device according to one embodiment of the present invention, FIG.
FIG. 20A is an explanatory diagram showing the innermost position and the outermost position of the head of the disk drive device according to one embodiment of the present invention.
(B), (c) is a front view, a side view, and a partial front view showing a shutter holding member of a disk cartridge in a disk drive device according to an embodiment of the present invention, and FIG. 21 is an embodiment of the present invention. FIG. 22 is a bottom view of a disk cartridge used in the disk drive, FIG. 22 is an explanatory view showing the layout of a printed circuit board of the conventional disk drive corresponding to FIG. 11, and FIG. 23 is a connector of the conventional disk drive corresponding to FIG. FIG.

In these figures, a disk drive 1
Is a flexible printed circuit board (FPC) connected to the lower cover 2, the lower insulating sheet 3, and the spindle motor 4.
5, an upper insulating sheet 6 disposed on the FPC 5, a chassis 7 disposed via the upper insulating sheet 6, and a pair of magnetic heads 8 and 9 provided on the chassis 7 at the ends. A carriage 10, a carriage transfer device 12 for transferring the carriage 10 in a radial direction of a magnetic disk 11, which will be described later, a turntable 13 protruding above the chassis 7 and rotationally driven by a spindle motor 4 attached to the chassis 7, The cartridge holder 15 is held in the apparatus, and is supported so as to be able to move up and down in a direction perpendicular to the chassis 7, a slide plate 18 that moves the cartridge holder 15 up and down, and the disk cartridge 14 is introduced to the load position. Eject lever 16 for pushing out from the load position to the discharge position.
And an upper cover 17.

The chassis 7 is formed by pressing an aluminum alloy. A carriage transfer device 12 is provided on the rear side of the disk drive device 1, which is the upper side in FIG. 1, and a turntable 13 is provided on the front side, which is the lower side. Further, a cartridge holder 15 and a slide plate 18 are provided around the turntable 13. Further, the chassis 7 is provided with an opening 92 for exposing the spindle motor 4.

As a circuit board, a flexible printed circuit board (FPC) 5 is used in place of a conventional printed circuit board, and an opening (not shown) which penetrates a shaft of a spindle motor 4 and a bearing is provided in the FPC 5. An opening 28 for exposing the spindle motor 4 is provided in the cover 2, and the back yoke (motor yoke) holds the FPC 5 therebetween.
22 is fixed. The back yoke 22 of the spindle motor 4 is inserted into the opening 28 of the lower cover 2 and incorporated. The FPC 5 may be attached to the upper surface of the back yoke 22 with, for example, a double-sided tape. Reference numeral 20 denotes an FPC holding portion protrudingly formed on the chassis 7;
1 is a screw for fastening the chassis 7 to the back yoke 22, 23 is an IC element, and 24 is a chip component. Also,
The chassis 7 has a convex shape where there is no restriction on the component height, and has a concave shape where there is a restriction. As shown in FIG. 12, the lower surface of the chassis 7 is in close contact with the lower cover 2, and
In the portion where the FPC 5 is interposed, the chassis 7
A convex portion 26 is formed to accommodate the C5, the IC element 23, and the chip component 24. The chip component 24 is housed in the space formed by the convex portion 26. However, since the IC element 23 is high, an opening 27 is formed in the chassis 7 so that the IC element 23 is accommodated in the opening 27. I have. Since the circuit components of the stepping motor 25 are mounted on the FPC 5, the size of the back yoke 22 can be reduced. 0TR sensor, stepping motor 2
5. The spindle motor 4 is connected by one FPC 5, and various switches 90 can be directly soldered to the FPC 5.
As described above, since the FPC 5 is closely attached to the lower cover 2, the reference position can be set with the lower cover 2 and the rigidity can be increased. Further, since the FPC 5 is attached to the back yoke 22, there is no need to allow the FPC 5 to be attached to the back yoke 22, so that the size of the back yoke 22 can be reduced, and the opening 28 can be formed in the lower cover 2.
Is formed, and a part of the back yoke 22 of the spindle motor 4 is reduced in the opening 28, so that the height can be reduced.

As shown in FIG. 8, the carriage transfer device 12 includes a carriage 10 on which the lower magnetic head 8 is mounted,
The carriage 10 is swingably supported at the end where the anti-magnetic head is mounted, and has a hold case 29 on which the upper magnetic head 9 is mounted.
0 and a guide shaft 3
And a support member 35 projecting from the carriage 10 and supporting a follower pin 33 and a follower spring 34. The screw shaft 32 has a spiral feed groove 31 engraved on its outer periphery. Have been. 36 is a guide shaft holding member for fixing the guide shaft 30 to the chassis 7. The carriage 10 is slidably supported by the guide shaft 30 through a bearing, Katori
In the radial direction of the magnetic disk 11 mounted on the turntable 13 along the opening 41a of the Jjihoruda 15 has freely move. The follower pin 33 is formed integrally with the support member 35 as shown in FIG. 7, and the follower spring 34 is fixed to the lower surface of the support member 35 by a set screw 37. The follower pin 33 is provided so as to be aligned with the inclination direction of the feed groove 31, and the screw shaft 32 is elastically held between the follower spring 34 and the follower pin 33 to prevent the follower pin 33 from being detached from the feed groove 31. The lower surface 38 of the support member 35 of the carriage 10 is formed as an inclined surface and is made thinner toward its tip, and the follower spring 34 is fixed to the lower surface 38 by a set screw 37.
The follower spring 34 disposed obliquely as compared with the follower spring disposed horizontally can obtain a necessary elastic force even if its thickness is reduced. Further, the support member 35 can be made thick (high in rigidity).

As shown in FIGS. 1 and 8, one end of the screw shaft 32 is connected to the stepping motor 25, and rotates in synchronization with the rotation of the stepping motor 25. When the screw shaft 32 rotates, the follower pin 33 converts the rotational motion into a linear motion, and the carriage 10
Reciprocates along the guide shaft 30 in accordance with the amount of rotation of the magnetic disk 11 and is transferred to the commanded track position of the magnetic disk 11. A holding frame 39 holds the screw shaft 32 and the stepping motor 25.

As shown in FIG. 8, the cartridge holder 15 has a U-shaped cartridge holding portion 40 on both sides thereof.
The cartridge holding portion 40 is formed integrally with an upper surface portion 41 made of a thin plate for connecting the cartridge holding portion 40.
The lower portion supports the lower surface of the disk cartridge 14, and all other lower surfaces are open so that the turntable 13 and a hub 42 described later of the magnetic disk 11 can face each other. A
The cartridge insertion hole 43 is provided. The cartridge holding portion 40 of the cartridge holder 15 is further formed with protrusions 46, 46 which engage with guide grooves 44 and guide notches 45 of the chassis 7, which will be described later. The cartridge holder 15 is always elastically urged toward the chassis 7 by a coil spring (not shown). Also, cart
As shown in FIG. 1 and FIG.
Upper and lower heads 9, which move in the radial direction of the disk 11,
An opening 41a that constitutes the 8 moving paths is provided.

On the inner surfaces of the side plates 47 and 48 of the chassis 7,
As shown in FIG. 2, FIG. 5, and FIG.
A guide groove 44 and a guide notch 45 for guiding the projection 46 provided on the cartridge holding portion 40 of the cartridge holder 5 are formed, and the cartridge holder 15 is mounted on the chassis 7 along the guide of the guide groove 44 and the guide notch 45. On the other hand, loading and unloading of the magnetic disk 11 can be performed by moving substantially vertically.
This movement is performed by a slide plate 18 disposed on the upper surface of the cartridge holder 15 and movable in parallel along the upper surface.
When the eject button 91 connected to the slide plate 18 is pushed in the depth direction B of the chassis 7 when the cartridge holder 15 is in the loaded state, the movement is performed. Accordingly, the cartridge holder 15 is pushed upward, that is, in the unloading direction.

The slide plate 18 is mounted on the upper surface of the cartridge holder 15 as shown in FIGS.
Sliding motion in the front-rear direction with respect to the cartridge holder 15 (chassis 7) is allowed. This slide plate 1
8 is provided with an upper plate 49 and side plates 50, 50 bent downward from both side edges of the upper plate 49.
One of the side plates 50, 50 of the slide plate 18, the parallel cam portions 51, 52 parallel to the upper surface of the chassis 7 on which the protrusion 46 comes into contact and slides when not loaded, and lowers the cartridge holder 15 during the loading operation. In addition, inclined cam portions 53 and 54 formed with a downward slope on the rear (rear) side with respect to the chassis 7 for raising at the time of the eject operation are provided at two positions at the front and rear. Before and after the parallel cam part 5
1 and 52, the side closer to the cartridge insertion side A (parallel cam portion 51) is set higher than the back side (parallel cam portion 52), and as described later, the disc cartridge 14 is inserted obliquely. When the holder 15 is lowered to the load position, the disk cartridge 14 is in a horizontal state. The slide plate 18 is constantly urged toward the cartridge insertion side A by a slide spring 55. The slide plate 18 is locked and held by the eject lever 16 at the loading position, that is, the pushing position. The parallel cam portions 51 and 52 and the inclined cam portions 53 and 5
The cam mechanism is configured by the guide groove portion 44, the guide notch portion 45, the protrusion 46, and the like. This slide plate 1
8 are provided integrally with a plurality of operation button mounting portions 56, 56.
6, the other operation button mounting portions 56 are removed, and the operation button mounting portions 5 at desired positions on the slide plate 18 are removed.
For example, the type shown in FIG. 8 can be obtained by simply cutting the 6 and can be adapted to various demands of the user.

In the upper right part of the cartridge holder 15 in FIG. 1, an eject lever 16 is provided with an eject spring 5.
7, is supported by the support shaft 58 so as to be swingable in a state of being elastically biased in the ejecting direction (counterclockwise) at all times. The swing end of the eject lever 16 is brought into contact with the side end of the shutter 59 together with the rotation of the eject lever 16 to open the shutter 59 of the disk cartridge 14. In addition, the eject lever 16 is
When the disk cartridge 14 is inserted and the cartridge holder 15 is lowered, the cartridge holder 15 is engaged with a lock member (not shown), whereby the rotation of the eject lever 16 in the direction of arrow C is prevented, and the eject lever 16 is pushed in. Will be locked.

As shown in FIGS. 1 and 8, the arm portion 60 of the hold case 29 comes into contact with the end portion of the arm portion contact portion 61 that opens the hold case 29 of the cartridge holder 15 upward. Bent guide piece 62
Is extended. Even if the end of the arm contact portion 61 approaches the FPC cable 63 for connecting the magnetic head that is being routed by the transfer operation of the carriage 10, the end of the arm contact portion 61 hits the end of the arm contact portion 61 and the FPC cable is damaged. The FPC cable 63 is guided by the guide piece 62 to the lower surface of the guide piece 62 so that the FPC cable 63 does not abut on the end of the arm contact portion 61 without being hit.

The disk cartridge 14, as shown in FIG. 21, in which housing a magnetic disk 11 having flexibility into the case 64 of synthetic resin of a hard, on the outside of one end portion of the case 64 Is reciprocally mounted in a state where it is constantly elastically urged in the closing direction (the direction of arrow D) by a spring (not shown) incorporated in a metal shutter 59. At a predetermined position of the shutter 59, an opening 66 having substantially the same shape as the head insertion hole 65 formed in the case 64 is provided. When the shutter 59 is opened, the head insertion hole 65 and the opening 66 coincide with each other. And the magnetic disk 11
The magnetic heads 8 and 9 are exposed to the outside and can slide on the magnetic disk 11 from outside the case 64. The bottom surface of the case 64 further includes a hub protrusion hole 67 for exposing the hub 42 of the magnetic disk 11 to the outside of the case, and a positioning hole 6 for positioning the disk cartridge 14.
8, and a loading engagement groove 69 which is also opened on the side surface.

As shown in FIGS. 9 and 16, a part of the soldering part 70 of the FPC 5 is not overlapped with the soldering part 72 of the printed circuit board (PCB) 71 so that the PCB 71 and the FP are not overlapped.
C5 is a soldering structure, 73 is a copper foil portion formed on the PCB 71, and 74 is a copper foil portion formed on the FPC5. The solder 75 that has been melted and overflowed from between the PCB 71 and the FPC 5 is blocked by the resist 76 and does not leak to the PCB 71 side, as shown in FIG. FPC5 from part of 70
Although it leaks to the side, since the vicinity of the connection portion of the FPC 5 is covered with the resist 77, the adjacent connection terminal 78 is not connected by the overflowing solder 75.

As shown in FIGS. 1, 8, and 10, the magnetic hedge protective wall 79 and the regulating portion 80 for the shutter 59 are integrally formed on both side edges of the opening 41a of the cartridge holder 15 , so that the shutter 59 is formed. The upper surface piece 81 of the shutter 59 of the disk cartridge 14 is
As shown in 6 (b), since pressing the edge of the shutter 59
The loading operation can be performed smoothly without damaging the components by hitting the upper magnetic head 9 without the part floating and opening.

As shown in FIGS. 2, 3 and 10,
Opening 41 in the moving direction of upper and lower magnetic heads 8 and 9
a on the chassis 7 facing the side of FIG.
A pressing member 83 protruding toward the ascending direction of the die 15 and pressing the lower surface piece 82 of the shutter 59 of the disk cartridge 14.
As shown in FIG. 20, the pressing member 83 is formed in a substantially U-shape when viewed from the top, and the disc cartridge 14 is inserted into the cartridge holder 15.
And is formed to be bent upward so as to press against the lower surface piece 82 of the shutter 59. The substantially U-shaped portion of the holding member 83 matches the shape of the opening 27 of the chassis 7 described above. The guide shaft holding member 36 is formed integrally with the base of the holding member 83. As shown in FIG. 16B, the lower member 82 of the shutter 59 of the disk cartridge 14 is pressed by the pressing member 83, so that the shutter 59 does not open and hits the lower magnetic head 8 to damage components. Without this, the loading operation can be performed smoothly.

As shown in FIGS. 1 and 17, a connector 84 attached to the chassis 7 is arranged to be drawn in from the side of the disk drive 1. The retracted amount is, for example, the length of the connector 84 + the length of the reinforcing plate 85. Accordingly, even if the cord 86 pulled out from the connector 84 is pulled up, for example, upward while taking a relatively large arc, the reinforcing plate 85 commonly used for the connector 84 makes a space of approximately the radius of the arc. It absorbs in the idle space in the chassis 7 and does not require extra space outside the disk drive 1.

As shown in FIG. 11, a single-sided or multilayer FP
Flexible FPC5 constituted by C5 as a circuit board
Is used. Conventionally, as shown in FIG. 22, it is composed of a main PCB 100 on which main components are mounted and a motor PCB 102 on which a spindle motor drive circuit 101 is mounted. In addition to the connection between the two PCBs 100 and 102, non-main components (HD, STP, 0TR sensor, etc.)
Since it is necessary to connect to the CBs 100 and 102, there are many connection points and a certain number of connectors are required. However, according to the above-described embodiment, the reduction of the number of components and the cost can be reduced by the connector-less operation, and the rigidity can be improved because there is no need to drill a hole in the chassis 7 because there is no connector. Restrictions on designing a thin disk drive 1 are reduced. Further, by adopting the FPC, it is possible to design a thinner disk drive device 1 further, and since the FPC of the main component in which the conventional FPC is used is eliminated, the number of parts and the cost can be greatly reduced. In addition, the disk drive 1 can be made lighter than a normal PCB, and a space that cannot be used with a conventional hard PCB can be used, so that the disk drive 1 can be made thinner.
This makes it possible to reduce the cost of a single product, to reduce the manufacturing cost by reducing the number of connections when viewed as a whole of the disk drive 1, and to reduce the resonance mode when the disk drive 1 is vibrated. The environmental performance is improved with little effect on the mechanical side.
Due to the low rigidity of 5, no distortion occurs when attached to the chassis 7, and the influence on the attachment is small. In this way, it is possible to flexibly connect directly to a movable component (HD, 0TR sensor, etc.). There is only one connector 84 for I / F, and a connectorless board can be achieved in terms of internal configuration.

When the disc cartridge 14 is inserted, as described above, the cartridge holder 15 is held at an angle of 0.5 ° with the back side of the cartridge holder 15 at the lower position.
At the position where the upper and lower magnetic heads 8 and 9 are at the innermost circumference of the magnetic disk 11, the upper surface of the magnetic disk 11 does not abut against the upper magnetic head 9, and the upper and lower magnetic heads 8 and 9 are at the outermost circumference of the magnetic disk 11. , The lower surface of the disk cartridge 14 (the magnetic disk 11) is
The disk cartridge 14 (magnetic disk 11) is inserted obliquely so as not to hit the disk. That is, when the disk cartridge 14 is inserted into the cartridge holder 15, as shown in FIG. 18, the distance between the lower surface of the disk cartridge 14 and the shaft tip 87 of the turntable 13, the upper surface of the disk cartridge 14, and the innermost peripheral position are determined. Since the distance from the upper magnetic head 9 and the distance from the lower surface of the disk cartridge 14 to the lower magnetic head 8 at the outermost peripheral position are set to be equal, for example,
tanα × r = t (where α is the insertion inclination angle of the disk cartridge 14, r is the distance from the shaft 87 of the turntable 13 to the outermost peripheral position of the upper and lower magnetic heads 8 and 9, and t is the upper and lower magnetic heads 8 and 9 at the outermost positions of the disk cartridge 14).
r = 39.5 mm, t = 0.35 mm [This value is the thickness t1 ′ of the disk cartridge 14 = 3.3 mm and the error is ± 0.2 mm, so the thickness t1 = 3.5 mm and the warp d1 of the disk cartridge 14 = 4.2 mm, and therefore t = (d1−t1) / 2 = (4.2m
m−3.5 mm) /2=0.35 mm], then α = 0.5 °. Therefore, the descending amount of the disk cartridge 14 at the innermost peripheral position of the upper magnetic head 9 is approximately r1 × tan0.5 ° (where r1: the distance from the axis of the turntable 13 to the upper magnetic head 9 at the innermost peripheral position). In this embodiment, r1 × ta is larger than the parallel insertion of the conventional disk cartridge.
The thickness of the entire disk drive device 1 can be reduced by nα.

Reference numeral 88 denotes an opening / closing door attached to the cartridge insertion port side A, 89 denotes a front plate on which the opening / closing door 88 is attached so as to be freely opened and closed, and 90 denotes a medium IN or 1/2/4 MB.
Alternatively, it is a detection switch for write protection or the like.

Next, loading and unloading operations of the magnetic disk drive 1 having the above-described structure will be described.

When the disk cartridge 14 is inserted from the unloaded state shown in FIG. 4A, the disk cartridge 14 is first inserted obliquely at the unloaded position. Then, the rotating end of the eject lever 16 contacts the side surface of the shutter 59 at the tip of the disk cartridge 14, and when the disk cartridge 14 is further pushed in, the eject lever 16 rotates about its support shaft 58, and the eject lever 16 rotates. 1
The shutter 59 moves to the back while being released by the rotation end of the shutter 6. Then, when the disk cartridge 14 is inserted to the innermost part of the cartridge holder 15, the slide plate 18 is unlocked (not shown), and the slide plate 18 is moved downward in FIG. (To the front of the driving device 1). When the slide plate 18 is released, the shutter 59 is fully opened. Further, when the slide plate 18 is slid in the direction of arrow B and the hub 42 of the disk cartridge 14 is located right above the turntable 13 and is at a position where the disk cartridge 14 can no longer be introduced, FIG.
As shown in (b), the protrusion 46 of the cartridge holder 15 is set so as to be located just above the inclined cam portions 53 and 54 formed on the side plate 47 of the slide plate 18.
Thereby, the slide plate 18 that has been slid is moved.
Are the elastic force for urging the cartridge holder 15 in the base direction and the inclined cam portion 5 formed on the side surface of the slide plate 18.
The cartridge holder 15 further moves in the direction of arrow B by the action of the cartridge holders 3 and 54, and the cartridge holder 15 descends vertically to the chassis 7 along the guide grooves 44 and the guide notches 45, and the magnetic disk 11 is loaded on the turntable 13. FIG. 4 (b)
As shown in FIG. 7, the magnetic heads 8 and 9 enter the case 64 from the head insertion holes 65 and come into contact with the magnetic disk 11,
Recording / reproduction becomes possible.

In this manner, the upper magnetic head 9 on the hold case 29 side touches the magnetic disk 11, sandwiches the magnetic disk 11 with the lower magnetic head 8 on the carriage 10, and enters a loading state. Disc 1
1 is completed.

When the recording or reproduction is completed and the disc cartridge 14 is taken out, an eject operation is performed. At this time, the eject button 9 is used.
When the slide plate 18 is pushed into the rear side of the chassis 7, the slide plate 18 also moves to the rear side accordingly, and pushes up the projection 46 of the cartridge holder 15 along the inclined cam portions 53 and 54, and pushes the projection 46 into the parallel cam portion. 51, 52,
The cartridge holder 15 moves upward (in a direction away from the chassis 7) to enter an unloaded state. When the slide plate 18 is further pushed in, the slide plate 18 is locked at the far side position, and the movement of the slide plate 18 releases the lock of the eject lever 16 so that the eject lever 16 is pivoted about the support shaft 58 by the elastic force of the eject spring 57. 1 to eject the disc cartridge 14 in the direction of arrow B. In the process of ejecting, the shutter 59 of the disk cartridge 14 engaged with the eject lever 16 also moves in the closing direction, and is naturally closed when ejected. Therefore, the eject lever 16 also functions as a shutter opening / closing lever. In this manner, the disk cartridge 14 can be manually removed only after the ejection.

At the position where the upper and lower magnetic heads 8 and 9 are located at the innermost circumference of the magnetic disk 11, the upper surface of the magnetic disk 11 does not abut against the upper magnetic head 9, and the upper and lower magnetic heads 8 and 9 are magnetic. At the position on the outermost periphery of the disk 11,
The magnetic disk 11 is obliquely inserted and ejected so that the lower surface of the magnetic disk 11 does not hit the lower magnetic head 8.

According to the above-described embodiment, the spindle motor 4 for mounting and rotating the inserted magnetic disk 11, the printed circuit board connected to the spindle motor 4, the spindle motor 4, In a disk drive having a lower cover 2 for accommodating a substrate, a flexible printed circuit (FPC) 5 is used as a printed circuit board, and an opening (not shown) through which a shaft and a bearing of a spindle motor 4 pass through the FPC 5. An opening 28 for exposing the spindle motor 4 is provided in the lower cover 2, and a back yoke 22 is fixedly provided so as to sandwich the FPC 5. The back yoke 22 of the spindle motor 4 is inserted into the opening 28 of the lower cover 2 and incorporated. In addition, the chassis 7 has a convex shape where there is no restriction on the component height, and has a concave shape where there is a restriction. As shown in FIG. 12, the lower surface of the chassis 7 is in close contact with the lower cover 2. In the intervening portion, the chassis 7 includes the FPC 5 and the IC element 23.
And a convex portion 26 for accommodating the chip component 24. The chip component 24 is housed in the space formed by the convex portion 26. However, since the IC element 23 is high, an opening 27 is formed in the chassis 7 and the IC element 2 is formed.
3 is accommodated in the opening 27. Then, by integrating the stepping motor 25 and the FPC 5, the area of the back yoke 22 can be reduced and the weight can be reduced. Also,
The OTR sensor, the stepping motor 25, and the spindle motor 4 are connected by one FPC 5, and various switches 90
Can also be directly soldered to the FPC 5. As described above, since the FPC 5 is closely attached to the lower cover 2, the reference position can be set with the lower cover 2 and the rigidity can be increased.
Further, since the FPC 5 is attached to the back yoke 22, there is no need to allow the FPC 5 to be attached to the back yoke 22, so that the back yoke 22 can be downsized and the opening 28 is formed in the lower cover 2. Since a part of the back yoke 22 of the spindle motor 4 is partially inserted into the opening 28, the height can be reduced. Therefore, by using the FPC 5, the thickness of the hard printed circuit board and a part of the back yoke can be reduced, and the weight can be reduced.

Further, according to the above embodiment, the PCB 71 and the FP in which a part of the soldering part 70 of the FPC 5 is not overlapped with the soldering part 72 of the printed circuit board (PCB) 71
According to the soldering structure with C5, the PCB 71 is melted.
The solder 75 that has overflowed from between the FPC 5 and the
6 does not leak to the PCB 71 side, but leaks to the FPC 5 side from a part of the soldered portion 70 of the FPC 5 which has been opened. However, since the vicinity of the connection portion of the FPC 5 is covered with the resist 77, it is adjacent The connection terminals 78 are not erroneously connected by the overflowing solder 75.

Further, according to the above-described embodiment, the arm portion 60 of the hold case 29 abuts, and the end of the arm contact portion 61 for opening the hold case 29 of the cartridge holder 15 is bent upward. Guide piece 62 is provided. By the way, in order to reduce the thickness of the disk drive device and secure a sufficient opening of the hold case 29, it is better to lift the arm portion 60 of the hold case 29 from the opening / closing support portion of the hold case 29. However, when the end of the arm contact portion 61 is extended, the end of the arm contact portion 61 is
The FPC cable fixing member is conventionally required because the transfer operation of the FPC cable 63 comes close to the FPC cable 63 for connecting the magnetic head which is being routed and hits the end of the arm contact portion 61 to damage the FPC cable 63. However, the FPC cable 63 is guided by the guide piece 6 by the guide piece 62 so as not to abut against the end of the arm portion contact portion 61.
Since the guide is guided to the lower surface of the disk drive device 2, the disk drive device 1 can be made thinner and lighter with a simple configuration in which the guide piece 62 bent upward is provided without attaching the FPC cable fixing member as in the related art. I can do it.

Further, according to the above-described embodiment, since the connector 84 attached to the chassis 7 is drawn from the side surface of the disk drive device 1, the reinforcing member commonly used for this kind of connector 84 is generally used. By the plate 85, the cord 86 pulled out from the connector 84 is routed upward, for example, while taking a relatively large arc, and as shown in FIG. However, as shown in FIG. 17, a space of approximately the radius of the arc is absorbed in the idle space in the chassis 7, and no extra space is required outside the disk drive device 1.

According to the above-described embodiment, as shown in FIG. 7, the lower surface 38 of the support member 35 of the carriage 10 is formed as an inclined surface and is made thinner at its tip. Is fixed, the follower spring 34 disposed obliquely as compared with the follower spring disposed horizontally can obtain the required elastic force even if its thickness is reduced, and can increase the rigidity of the support member 35. The thickness of the carriage transfer mechanism can be reduced.

According to the above embodiment, the single-sided or multi-layer FPC 5 is formed as a circuit board, and the flexible FPC 5 is used.
By using the PC 5, it is possible to flexibly and directly connect to movable parts (HD, 0TR sensor, etc.). There is only one connector 84 for I / F, and a connectorless board can be achieved in terms of internal configuration. That is, conventionally, as shown in FIG. 22, a main PCB 100 on which main components are mounted and a motor PCB 102 on which a spindle motor drive circuit 101 is mounted.
It is composed of In addition to the connection between the two PCBs 100 and 102, non-main components (HD, STP, 0TR)
Sensors) need to be connected to the PCBs 100 and 102, so there are many connection points and a certain number of connectors are required. However, according to the embodiment, as shown in FIG. 11, by using a flexible FPC 5 to reduce the number of connectors, it is possible to reduce the number of components and costs for the connectors, and to reduce the number of connectors. Since it is not necessary to form a hole in the chassis 7, the rigidity is improved, and restrictions on designing a thin disk drive 1 are reduced. Also, FP
The use of the C makes it possible to design the thinner disk drive 1 further, and eliminates the FPC as a main component in which the conventional FPC is used, thereby enabling a significant reduction in the number of parts and cost reduction. It is possible to reduce the weight of the disk drive device 1 with respect to the PCB,
The use of a space that could not be used in the CB makes it possible to reduce the thickness of the disk drive 1, and by devising the shape of the FPC 5 as shown in FIG. It is possible to reduce the manufacturing cost by reducing the number of connections when viewed as a whole, and since the resonance mode becomes a low frequency when vibration is applied to the disk drive 1, the influence on the mechanical side is small and the environmental performance is reduced. In addition, since the rigidity of the FPC 5 is low, no distortion occurs when the FPC 5 is mounted on the chassis 7, and the influence on the attachment is small.

According to the above-described embodiment, the cartridge holder 15 for holding the disk cartridge 14 containing the magnetic disk 11 formed in the shape of a disk, and the cartridge holder 15 is moved up and down to move the disk cartridge 14 inside. Lifting means for loading the magnetic disk 11 on the turntable 13 and unloading it from the turntable 13, a spindle motor 4 for driving the turntable 13 to rotate,
Upper and lower magnetic heads 8 and 9 for writing and / or reading signals to and from the upper and lower magnetic heads for supporting the upper and lower magnetic heads 8 and 9 and supporting the magnetic disk 11 so as to be able to approach and separate therefrom. In the disk drive device 1 provided with support means and upper and lower magnetic head transfer means for transferring the upper and lower magnetic head support means in the radial direction of the magnetic disk 11, the upper and lower magnetic heads 8, 9 At the position on the inner circumference, the upper surface of the magnetic disk 11 does not abut against the upper magnetic head 9, and the upper and lower magnetic heads 8, 9 are at the outermost circumference of the magnetic disk 11,
Since the magnetic disk 11 is inclined and inserted so that the lower surface of the magnetic disk 11 does not hit the lower magnetic head 8, when the disk cartridge 14 is inserted into the cartridge holder 15, as shown in FIG. The distance between the lower surface of the disk cartridge 14 and the shaft tip 87 of the turntable 13, the distance between the upper surface of the disk cartridge 14 and the upper magnetic head 9 at the innermost peripheral position, and the distance between the lower surface of the disk cartridge 14 and the outermost peripheral position. The distance from the lower magnetic head 8 is set to, for example, the same distance. Therefore, in the above-described embodiment, r1 × tanα is required for the entire disk drive 1 compared to the parallel insertion of the conventional disk cartridge. Can be reduced in thickness.

According to the above-described embodiment, the cartridge holder 15 for holding the disk cartridge 14 containing the magnetic disk 11 formed in a disk shape, and the cartridge holder 15 is moved up and down to hold the disk cartridge 14 inside. Lifting means for loading the magnetic disk 11 on the turntable 13 and unloading it from the turntable 13; a slide plate 18 for operating the lifting means; a spindle motor 4 for rotating the turntable 13; A disk drive including upper and lower magnetic heads 8 and 9 for writing and / or reading signals to and from the disk 11 and head transfer means for transferring the upper and lower magnetic heads 8 and 9 in the radial direction of the magnetic disk 11. In the device 1, the slide plate 18 has a plurality of operation buttons. .. Are provided integrally and the other operation button mounting portions 56 are removed except for the desired operation button mounting portion 56. Therefore, several types of molds are manufactured, and several types of parts are manufactured and managed. It is not necessary to cut the operation button mounting portion 56 at a desired position of the slide plate 18 manufactured by one mold, and it is possible to meet various demands of the user. Therefore, mold costs, management costs, and the like can be reduced, and costs can be reduced.

According to the above-described embodiment, since the magnetic head protection wall 79 and the restricting portion 80 for the shutter 59 are integrally formed on the cartridge holder 15 in a series, the upper surface piece 81 of the shutter 59 of the disk cartridge 14 has conventionally been formed. When opened, its edge hits the upper magnetic head 9 and the shutter 5
9. The upper magnetic head 9 may be damaged, and the loading operation may not be performed smoothly. In particular, when the thickness of the disk drive device 1 is reduced, the above-described risk is increased, and there is an obstacle to the reduction in thickness. However, the upper surface piece 81 of the shutter 59 of the disk cartridge 14 is pressed by the regulating portion 80 for the shutter 59 provided on the cartridge holder 15,
The loading operation can be performed smoothly without damaging the parts by the upper magnetic head 9 being hit without the shutter 59 being opened.

According to the above-described embodiment, the pressing member 83 for pressing the lower surface piece 82 of the shutter 59 of the disk cartridge 14 is provided.
The edge of the lower surface piece 82 of the shutter 59 of No. 4 may be opened to hit the lower magnetic head 8, damaging the shutter 59 and the lower magnetic head 8, and possibly causing the loading operation to not be performed smoothly. In the case where the drive device 1 is made thinner, the above-described risk is increased, which is an obstacle to the thickness reduction.
The lower surface piece 82 of the shutter 59 is pressed, and the loading operation can be performed smoothly without damaging parts by hitting the lower magnetic head 8 without opening the shutter 59.

[0045]

As described above , according to the first aspect of the present invention, the opening in the moving direction of the upper and lower heads is performed.
The shutter is brought into contact with the shutter on both side edges of the mouth.
Formed a regulating part to regulate the lifting of the
Since the shutter is pressed at the two positions closest to the shutter,
Ensure that the raised shutter hits the upper head
To prevent damage to the shutter and upper head.
Recording operation can be performed smoothly and the disk drive
Molding can be achieved.

According to the invention of claim 2, the upper and lower portions
Before facing the side of the opening in the moving direction of the pad
On the chassis, the cartridge holder is
And comes into contact with the shutter to lift the shutter.
Since a holding member that holds up the lift is formed,
There is no member to press the shutter on the
The magnetic head hits one of the magnetic heads
There was a risk of damaging the
A holding member is provided near the mouth to prevent damage to the lower head.
Avoids damage to the shutter and upper head,
Disc drive can be performed smoothly and the disk drive is thin.
Can be achieved.

[Brief description of the drawings]

FIG. 1 is a plan view showing a disk drive according to an embodiment of the present invention.

FIG. 2 is a plan view showing the cartridge holder and the disk cartridge of the disk drive device according to the embodiment of the present invention.

FIG. 3 is a plan view of the disk drive according to the embodiment of the present invention with the cartridge holder removed;

FIG. 4 is an explanatory view showing an operation of inserting a disk cartridge of the disk drive device according to the embodiment of the present invention;

FIG. 5 is an explanatory view showing a guide state of a cartridge holder of the disk drive device according to the embodiment of the present invention;

FIG. 6 is an explanatory view showing a guide state of a cartridge holder of the disk drive device according to the embodiment of the present invention;

FIG. 7 is an explanatory view showing a carriage driving mechanism portion of the disk drive device according to the embodiment of the present invention;

FIG. 8 is an exploded perspective view of the disk drive device according to the embodiment of the present invention.

FIG. 9 is an exploded perspective view of the disk drive device according to the embodiment of the present invention.

FIG. 10 is an explanatory view showing an operation of a disk cartridge holding mechanism of the disk drive according to the embodiment of the present invention;

FIG. 11 is an explanatory view showing an arrangement of an FPC board of the disk drive device according to the embodiment of the present invention;

FIG. 12 is a longitudinal sectional view of the disk drive device according to the embodiment of the present invention in a spindle motor-carriage direction.

FIG. 13 is a vertical cross-sectional view of the disk drive device according to the embodiment of the present invention in a direction of a spindle motor and a circuit element;

FIG. 14 is a longitudinal sectional view showing an FPC holding state of the disk drive device according to the embodiment of the present invention.

FIG. 15 is a longitudinal sectional view of the vicinity of a spindle motor of the disk drive device according to one embodiment of the present invention;

FIG. 16 is an explanatory diagram showing an FPC connection of the disk drive device according to one embodiment of the present invention.

FIG. 17 is an explanatory view showing a connector of the disk drive device according to the embodiment of the present invention;

FIG. 18 is an explanatory view showing the principle of oblique insertion in the disk drive device according to one embodiment of the present invention.

FIG. 19 is an explanatory diagram showing the innermost position and the outermost position of the head of the disk drive device according to one embodiment of the present invention.

FIG. 20 is an explanatory view showing a shutter holding member of the disk cartridge in the disk drive device according to the embodiment of the present invention;

FIG. 21 is a bottom view of the disk cartridge used in the disk drive device according to one embodiment of the present invention.

FIG. 22 is an explanatory diagram showing an arrangement of a printed circuit board of a conventional disk drive device.

FIG. 23 is an explanatory view showing a connector of a conventional disk drive device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disk drive 4 Spindle motor 7 Chassis 8 Lower magnetic head 9 Upper magnetic head 11 Magnetic disk 13 Turntable 14 Disk cartridge 15 Cartridge holder 25 Stepping motor 40 Cartridge holding part 42 Hub 79 Magnetic head protection wall 80 Restrictor for shutter 81 Upper piece of shutter 82 Lower piece of shutter 83 Holding member

Claims (2)

(57) [Scope of request for utility model registration] 1. An information recording disk containing an information recording disk.
A case having an opening for exposing the disk to the outside; and
Use a disk cartridge with a shutter that covers the
A disc holder for holding the disc cartridge, raising and lowering the cartridge holder, loading the information recording disc in the held disc cartridge on a turntable, and unloading the disc from the turntable. Lifting means for loading, rotation driving means for rotationally driving the turntable, upper and lower heads for writing and / or reading signals to and from the information recording disk, and support for the upper and lower heads and proximity to the information recording disk - upper and lower head support means away freely supported, provided on the cartridge holder, the information recording di
Configure the path of the upper and lower heads that move in the radial direction of the disc
In the disk drive apparatus example Bei and openings, opposite side edges of the opening in the moving direction of the upper and lower head
The floating of the shutter comes into contact with the shutter
A disk drive device, wherein a restricting portion for restricting the rotation is formed. 2. An information recording disk containing an information recording disk.
A case having an opening for exposing the disk to the outside; and
Use a disk cartridge with a shutter that covers the
A disc holder for holding the disc cartridge, raising and lowering the cartridge holder, loading the information recording disc in the held disc cartridge on a turntable, and unloading the disc from the turntable. Lifting means for loading, rotation driving means for rotationally driving the turntable, upper and lower heads for writing and / or reading signals to and from the information recording disk, and support for the upper and lower heads and proximity to the information recording disk . An upper and lower head supporting means for supporting the upper and lower heads so that they can be separated from each other;
Support the turntable and support the turntable.
A chassis for lifting, provided in said cartridge holder, said information recording di
A disk drive device having an opening that constitutes a moving path for the upper and lower heads moving in the radial direction of the disc, wherein a side portion of the opening in the moving direction of the upper and lower heads is provided.
On the opposite chassis, the cartridge holder
Protrudes in the ascending direction, contacts the shutter, and
A disk drive device, wherein a holding member for holding up the cutter is formed.