JPH0221461A - Disk driving device - Google Patents

Abstract

PURPOSE:To simplify constitution and to miniaturize a device by providing a control member to connect/disconnect a clamping member to a spindle interlocking with an operating member, and performing position regulation by using the same engaging part. CONSTITUTION:A supporting member to support the clamping member 12 to crimp a disk on a rotating member 5, and also, to enable the clamping member 12 to move to an engaging position where the clamping member is engaged with the rotating member 5 and to an engagement releasing position where the clamping member 12 is separated from the rotating member 5, and the control member to control the supporting member corresponding to the operation of the operating member by engaging with the supporting member are provided. And the control member moves the supporting member 12 to the engaging position by an engaging part formed at part of the supporting member 12 when the operating member is pressed to a pressing position, and regulates the supporting member to the engagement releasing position when the operating member is moved to a releasing position. In such a way, the device can be miniaturized, and the constitution can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a disk drive device suitable for use in floppy disk drives and the like.

Conventionally, according to this type of disk drive device, a disk-shaped recording medium is inserted into the device through a disk insertion opening, mounted on a disk rotation spindle in the device, and the disk is rotated. It is configured to perform recording and reproduction by bringing a recording/reproducing head into contact with the disk surface.

Specifically, when installing a disc, after inserting the disc through the disc insertion slit.

The disk mounting operation member provided on the panel is operated to move the clamp member placed opposite the spindle toward the spindle, thereby engaging the disk with the spindle. Further, when the disk is ejected, the center cone is separated from the spindle by the operation member, and the engagement between the disk and the spindle is released.

On the other hand, as devices become smaller and thinner, the space for the panel that forms the opening for inserting the disc also becomes smaller.
The disc insertion slot is shaped like a thin slit, and the space around it is also reduced. Along with this, the internal mechanism of the device also needs to be downsized and simplified.

The present invention has been made in view of the above-mentioned needs, and it is an object of the present invention to provide a disk drive device that is downsized, has a simplified mechanism, and is capable of reliably loading a disk.

In order to achieve this object, the present invention provides an operating member that is locked in the pressed position by pressing from the release position and returns to the released position by pressing in the suppressed position, and an operating member that rotates the disk. Supports a rotating member to be driven and a clamp member that presses the disk against the rotating member, and an engagement position where the clamp member engages with the rotating member and an engagement where the clamp member is spaced apart from the rotating member. a support member movable to a release position; and a control member that engages with the support member and controls the support member in response to operation of the operating member, and the control member is configured to move the operating member to the pressed position. When pressed, the support member is moved to the engagement position using an engagement portion formed on a part of the support member, and when the operation member is moved to the release position, the engagement portion is moved to the engagement position. The support member is configured to be regulated to the disengaged position with the support member.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

Figures 1 and 2 show the disassembled and assembled states of the drive device according to the present invention, and the frame of the device, indicated by the symbol l in the figures, is formed in the shape of a casing with a bottom cutout 1a; A front panel 2 is fitted and fixed on the front side. The front panel 2 has disk insertion openings 2a, 2a arranged vertically in parallel, and further has openings 2b, 2b into which a clamp button 3 is fitted.

A base 4 is fixed to the upper surface of the frame l.

This base 4 has a large notch 4a through which a spindle, etc., which will be described later, is exposed.

With the spindle motor 5 facing this notch 4a,
is attached using the bearing portion 1b of the frame 1.

This spindle motor 5 has a spindle 6 on the upper side,
Another spindle 7 is provided below the bearing part 1b. A shield plate 8 is arranged below the spindle motor 5 to block noise generated from the spindle motor, and the spindle motor 5 is driven by a driving printed circuit board 9 on which a driving circuit is mounted.

Protruding pieces 10, 10 are provided on the base 4 in a protruding manner to face each other, and a shaft 11 is horizontally suspended between the protruding pieces 10, 10. A base portion of a clamp lever 12 is rotatably supported on this shaft 11.

The clamp lever 12 has an arm 12a at one end.
2a faces the direction of the head arm, which will be described later.

A button lever 13 is slidably provided on the upper side of the base 4 and on the side of the clamp lever 12. The button lever 13 has a pair of bent portions 1 bent upward at its rear end.
3a and 13a, and a shaft 14 is horizontally suspended between the two.

A button roller 1.5.15 for transmitting the operation of the button lever to the crank lever 12 and a crank link 16 are rotatably supported on the shaft 14 and sandwiched between the two. A bent portion 13b bent upward is formed at the tip of the button lever 13.

One end of a shaft 17 is rotatably supported on the other end of the clamp link 16, and the other end of the shaft 17 is rotatably supported on a protrusion 12b protruding from one end of the clamp lever 12. .

The bent portion 13a side of the button lever 13 faces the opening 2b of the front panel 2, and the button 3 is fixed to the front end thereof.

An eject plate 18 is arranged below the button lever 13. As shown in FIG. 7, this eject plate 18 is slidably held at a predetermined height by guide bins 19 and 20 protruding from the base 4. A long hole 18a is formed along the axial direction into which the diameter projections 19a, 20a are fitted.

A bent portion 18c is provided at the front end of the ejector ff118.
A bent portion 18d is formed downward at the tip, and as shown in FIG.
8 and is moved forward when the cassette 21 is installed.

Further, a downwardly bent portion 18e is formed on the outer edge of the eject plate 18 near the bent portion 18c, and this bent portion 18e engages with a protrusion 4b protruding from the base 4. It is in a stable position.

A latch 23 is attached via a root 22 above the button lever 13 and the eject plate 18 which are arranged in a vertically overlapping manner. For installation, one end of the plate 22 is bent upward in an L-shape to make it one step higher, and this part is the bent part 2 facing the upper side of the button lever 13.
2a, and one end of the latch 23 is rotatably supported on the upper side of the bent portion 22a via a spring 25 to a bottle 24 extending through the bent portion 22a.

By the way, the detailed structure and operation of the latch 23 will be explained as follows. That is, FIG. 9 and FIG. 1O (A)~
As shown in (C), the latch 23 is formed into a flat plate shape. That is, the latch 23 is rotatably supported on a pin 24 protruding from the button lever 13 side, and is always pressed toward the button lever 13 side by a spring 25.

This latch 23 has a W-shaped notch 23a in a part thereof. This notch 23a is shown in FIGS. 9 and 1O.
In the figure, the left side is open. Since the notch 23a is formed in a W-shape, there are two recesses 23b and 23c.
The lower surface of the fourth part 23c located on the back side with
As shown in A) to (C), a bulging portion 23d that is convex toward the upper side is formed. The button lever 13 cooperates with the bottle 26 protruding from the button lever 13 to perform the following operations.

That is, when the button 3 is not pressed, the button lever 13
Since the bin 26 is located on the front side, the latch 23
When the button lever 13 is pressed in this state, the bottle 26 moves forward and moves along the curved part 23e formed on the open side edge of the notch 23a of the latch 23. 23 is rotated counterclockwise in the figure, centering on the bottle 24, as shown in FIG. 1O(A).

When the bottle 26 reaches the open end of the cutout 23a, the bottle 26 fits into the recess 23b located outside the cutout 23a, and is maintained in this state.

In addition, at this time, the spring 25 (for example, a torsion coil spring)
The force is applied in the clockwise direction in Figure 1O.

When the button lever 13 is pressed again from this state, the bin 2
6 also moves forward, and as the latch 23 is rotated clockwise by the spring 25, the bottle 26 fits into the recess 23c on the back side. However, since the lower side of the recess 23c communicates with the recess formed by forming the bulge 23d, the bottle 26 is guided to the lower side of the bulge 23d. Since the button lever 13 is pulled toward the front by the spring, it moves toward the front together with the bottle 26.

As a result, the bottle 26 moves while pushing the latch 23 upward, returning to the state shown in FIG. 10(A).

Further, for attachment, a long hole 22b is formed in the bent portion 22a of the plate 22, and the bottle 26 is slidably fitted into the long hole 22b. Furthermore, projections 22c and 22d are formed upwardly on the bent portion 22a.

For attachment, a holder 27 is placed on the opposite side of the plate 22 across the button lever 13. This holder 27 is used to attach a phototransistor for index detection, and a projection 27a is formed at one end of the holder 27.
One end of the spring 28 is fixed to the spring 28, and the other end of the spring is fixed to the protrusion 18f of the eject plate 18.
The eject plate is rotated clockwise in FIG. 7 about the bottle 19a.

A detector 29 consisting of a photo-interrupter or the like for detecting a write protect notch on the disk faces a notch 4C formed on the side of the base 4.

On the other hand, the reference numeral 30 denotes a load arm, which faces above the spindle motor 25, and has a center on the lower surface of its tip which holds a magnetic disk or the like mounted opposite the spindle 6. cone 3
1 is rotatably supported via a spring 32. The rear end portion of the load arm 30 is fixed to the frame l side via a leaf spring 33. Therefore, 1 is elastically supported on a cantilever, and the protrusion 3 protruding from the tip of the arm
0a is engaged with the tip of the arm 12a of the clamp lever 12.

On the other hand, a helad carriage 34 is attached below the base of the load arm 30. As shown in FIG. 1, the carriage 34 has four supports arranged vertically and parallel to each other on its tip side! fi 35, and a head 36 is attached to the tip of each support plate 35 so as to face each other. The head carriage 34 has a protrusion 34a on its side, and an arcuate guide groove 34b formed on the lower surface of the protrusion 34a.
It is slidably guided by a guide bar 34c fitted therein.

A support frame 38 to which a steel belt 37 is attached is fixed to the projecting piece 34a of the head carriage 34. As is well known, the steel belt 37 has a wide part and a narrow part, each of which has one end fixed to a support frame 38 and the other end fixed to a pulley 39. Further, a long hole is formed into which the wide and narrow portions of the steel belt 37 fit, and care is taken to prevent the narrow and wide portions from overlapping each other.

The pulley 39 is fixed to the tip of an output shaft 40a of a step motor 40 attached to the frame l side.

A stopper 41 serves to keep the rotation angle of the stepper motor 40 within a certain range to prevent the head from moving beyond a certain range.

Reference numeral 42 designates a solenoid that is a driving source for moving the herad pad up and down, and a pin 44 rotatably supported on the lower side of a link 43 is connected to the tip of a rod 42a of this solenoid. Furthermore, rollers 45.45 are supported on the shaft 44 on both sides of the link 43.

What is indicated by the reference numeral 46 is a pad arm, which is formed in an L-shape, and has a U-shaped bent portion 4 formed at one end thereof.
6a is rotatably supported on the pin 47 above the solenoid 42. A pad 48 is fixed to the other end of the arm 46, and this pad 48 loads the head onto the disk in conjunction with the movement of the solenoid 42, thereby preventing the disk from wobbling.

Further, one end of a bin 49 arranged parallel to the bin 47 is rotatably supported on the arm 46.
The other end is rotatably supported on the upper end of the link 43. Therefore, when the solenoid 42 is driven, the link 43 is rotated via the load 42a, and the arm 46 is rotated vertically about the bin 47 via the bin 49.

A support frame 50 bent into an L-shape according to the information of the carriage 34 is attached with its base end fixed to the carriage 34 side, and the other end extends above the carriage 34 to connect the carriage 34 and the support frame 50. A spring 51 is loaded between the tip and the tip to apply a constant load pressure to the head.

A handling spring is arranged on the side of the carriage 34 to remove play in the helad carriage, and this leaf spring 52
A sensor 53 is fixed to the base end of the head for detecting that the head is at the starting end of the track, that is, the home position.

In FIG. 1, the reference numeral 54 is a head protector provided to prevent damage to the head due to the insertion and removal of the disk.

Note that the reference plate 55 on the side of the printed board 9 is a reference plate for adjusting the height of the disk to the head.

On the other hand, what is shown in FIG. 8 is a block diagram of a control circuit, which is controlled by a microcomputer MC.

In FIG. 8, reference numeral 101 indicates a motor control circuit for controlling the spindle motor 5, and the spindle motor 5 is controlled via this circuit. code 1
02 is a select circuit that generates a necessary select signal from a plurality of select signals and issues commands to each internal circuit.

The reference numeral 103 is a head loading circuit, which controls the solenoid 42 for performing head loading.
4 is a position control circuit for controlling the stepper motor 40; 105 is a detection circuit for receiving a signal from the sensor 53 and detecting the track position; and 106 is for transmitting or receiving information to a plurality of heads. This is the control circuit.

Further, reference numeral 107 indicates an index detection circuit for detecting an index, and reference numeral 108 indicates a pair of ready circuits that generate a ready signal based on the index signal.

By the way, although Figures 1 and 2 show the mechanism for the upper disk of two disks mounted above and below, these clamp mechanisms, head roll mechanisms, button latch mechanisms, and media eject mechanisms are It also exists under frame l in a symmetrical state.

Next, the operation of this embodiment configured as above will be explained.

First, when the magnetic disk 21 is inserted from the insertion opening 2a on the upper side of the front panel 2, the disk advances along the guide section made up of the frame 1 and the base 4, and the magnetic disk 21 is inserted into the bending section at the tip of the eject plate 18. It touches L8d and is inserted deep into the back while pushing the tampering root 18.

Next, when the clamp button 3 is pressed, the button lever 13 integrated with the button 3 moves forward.

In the following description, the front, rear, left, right, and up and down directions are indicated by adding + and - signs to the x, y, and z numbers shown by arrows in FIG. 2.

When the bar 13 moves in the 10X direction, the link 16 is rotated counterclockwise in FIG.
is rotated clockwise around axis 11, and its arm! 2
The tip of the load arm 3o contacts the protrusion 30a at the tip of the load arm 30 and pushes it downward. As a result, the load arm 3o is pushed in the -Z force direction, and the center cone 3 attached to it and the spindle 6 In this state, the spindle motor 8 is connected to the drive board 9.
The disk is rotated at a constant speed, and the disk rotates at a predetermined rotation speed.

The head 36 is positioned by moving the helad carriage 34. That is, the pulley 39 rotates as the stepper motor 40 rotates, and the steel belt 37 is wound and unwound to move in the +X or -X direction and perform one positioning. This movement is constantly monitored by the sensor 53. The carriage is moved while being guided by the guide bar 34c, and is carried out smoothly without wobbling due to the pressing force of the leaf spring 52.

The head 36 is loaded onto the disk by removing the pressing force applied by the spring 51 through the support frame 50. In other words, -Y of the solenoid 42
The link 43 rotates in the − and Z directions by driving in the force direction,
Rotate the bad arm 46 in the same -Z direction. The bad arm 46 supports the helad arm, and since the arm 46 is rotated in the -Z force direction, the support for the helad arm is removed, and the head is loaded onto the media by the force of the spring 51.

On the other hand, the latch 23 and the bin 2 hold and release the disc.
6. That is, pressing button 3 once activates the latch.

A second press releases the latch.

By the way, when the disk 21 is mounted, the eject plate 18 moves at the same time, energy is stored in the spring 28, and rotational force about the shaft is applied. When the disc 21 is pushed to the completely installed state, the protrusion 4b protruding from the base 4 is inserted into the bent portion 1.
By engaging with the rear end of 8e, it is locked and maintained in the attached state.

When the button 3 is pressed to clamp the disc, the button lever 13 moves, the bin 26 protruding from the top of the button lever 13 moves, the latch 23 rotates around the bin 24, and the eject plate 18 is moved to the second position. 7 Protrusion 4 for pushing to the right in Figure 7
b is disengaged from the bent portion 18e.

On the other hand, due to the movement of the button lever 13, the clamp lever 1
2 is rotated clockwise in FIG. 7, the protrusion 12c protruding from the side opposite to the arm 12a lowers and engages with the bent portion 18c of the eject plate 18 to prevent the eject plate 18 from retreating by the spring 28. do.

To take out the disc 21, press the button 2 again to release the latch 23, open the button lever 13, and in conjunction with its backward movement, the clamp lever is rotated counterclockwise in FIG. When the eject plate 18 is disengaged from the bent portion 18c, the eject plate 18 is pulled by the tensile force of the spring 28, so the disk 21 supported by the bent portion 18e retreats, and the disk 21 is automatically ejected. .

The above explanation is only about the disk mounted on the upper side, but the exact same operation is performed for the lower disk.6 Since this embodiment is configured as described above, it is possible to use a plurality of disks. The head can be driven by a common drive source, the head can be moved by a common drive source, the number of parts can be reduced, the efficiency of use of mechanical parts can be improved, and the entire device can be downsized.

Furthermore, power consumption can be reduced by sharing drive sources such as spindle motors and stepper motors.

In the above embodiment, two disks can be driven, or two spindle motors may be provided, or more disk holding mechanisms may be connected from one spindle motor to a power transmission means such as a belt. Of course, it is also possible to drive two or more disks by driving.

As described above, the disk drive device according to the present invention includes a control member that engages and disengages the clamp member from the spindle in conjunction with the operating member, and also moves the clamp member to the operating position and to the non-operating position. Since the position of the clamp member is restricted by using the same engaging portion of the support member, there is no need to separately provide a member for positionally restricting the clamp member to the non-operating position, and the configuration is simplified. Further, the non-operating position of the clamp is a position spaced above the spindle, and simplifying the regulating member at this non-operating position as described above has a great effect on making the device thinner.

[Brief explanation of the drawing]

The drawings are for explaining one embodiment of the present invention. Fig. 1 is an exploded perspective view, Fig. 2 is an overall perspective view, and Fig. 3 is a clamp lever.
Fig. 4 is a plan view, Fig. 5 is a rear view showing the loading mechanism using a solenoid, Fig. 6 is a side view illustrating the spindle, and Fig. 7 is a perspective view showing the interlocking relationship between the button lever and the load arm. A perspective view showing the interlocking relationship between the eject plate and the clamp lever, FIG. 8 is a block circuit diagram explaining the control method, FIG. 9 is a perspective view showing the structure of the latch, and FIGS. FIG. 3 is an explanatory diagram of the operation of the latch. l・-・Frame 2・Front panel 3・
-Button 4-...Base 5...Spindle motor 6.7...-Spindle 9-...Printed circuit board 13...Button lever 18...Eject plate 30...Load arm 34...-Carriage 36... Head 39... Pulley 42... Solenoid 53... Sensor 12... Clamp lever 16, 43... Link 23... Latch 31... Center cone 35... Support plate 37... Steel belt 40... Step motor 46... Bad arm Figure 3 Figure 8 Figure 9

Claims (1)

[Scope of Claims] 1) An operating member that is locked in the pressed position by pressing from the released position and returns to the released position by pressing at the pressed position, and a rotating member that rotationally drives the disk; A clamp member that presses the disk against the rotating member is supported, and is movable between an engagement position where the clamp member is engaged with the rotating member and an engagement release position where the clamp member is spaced apart from the rotating member. and a control member that engages with the support member and controls the support member in accordance with the operation of the operation member, and the control member is configured to control the operation member when the operation member is pressed to the pressed position. The support member is moved to the engagement position using an engagement portion formed on a part of the support member, and when the operating member is moved to the release position, the engagement portion is used to move the support member to the engagement position. A disk drive device characterized in that it is configured to be restricted to a disengaged position.