JPH0373462A - Disk driver - Google Patents

Abstract

PURPOSE:To prevent the occurrence of accidents such as the damage, deformation, etc. of a disk head and various mechanisms by ejecting a disk to the outside of a device after completely releasing the loaded state of the disk based upon a spindle and a clamping member. CONSTITUTION:After completely releasing the clamping member 12 from the spindle by the operation of an operation member 3, a disk ejecting member 18 executes disk ejecting operation and its timing is controlled by the 1st and 2nd engaging parts 12a, 12c integrally formed on the operation member 3. Thereby, various operation is not executed until all operation control is surely executed by the operation member 3 and the occurrence of malfunction unlocking the disk ejecting member 18 by external oscillation or the like can be prevented. Consequently, the disk 21, a recording/reproducing head 36 and other members can be prevented from being damaged or deformed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disk drive device that reads or writes information by driving a recording medium such as a magnetic disk housed in a cassette.

[Prior art 1] Conventionally, in this type of disk drive device, a disk-shaped ai1M body is inserted into the device through a disk insertion opening, mounted on a disk rotation spindle in the device, and the disk is inserted into the device through a disk insertion opening. The recording/reproducing head is brought into contact with the disk surface while rotating the disk, thereby performing recording/reproducing.

Specifically, when mounting a disc, after inserting the disc through the disc insertion slit, operate the disc mounting operation member arranged on the panel to insert the clamp located at a position facing the binder. The member is moved toward the spindle and the disk is engaged with the spindle. Further, when the disk is ejected, the clamp member is separated from the spindle by the operation member to release the engagement state between the disk and the spindle.

However, with the miniaturization of devices and the ``fa type''
The space of the panel that forms the opening for inserting a disc has become smaller, the disc insertion opening is formed in the shape of a thin slit, and the space around it has also been reduced. Therefore, when ejecting the disk, it becomes difficult to take out the disk from the slit, so when the engagement between the spindle and the clamp member is released by the operating member,
A disk ejecting member is provided for ejecting the large disk inserted into the apparatus to the outside of the apparatus.

[Problem to be Solved by the Invention] However, according to the conventional H device, there are dimensional errors in each 7m horizontal component and errors in assembling beans, resulting in variations in the mechanism and timing errors. ' etc., the disc may not be completely released from the spindle and the clamp member (this may cause the side of the disc ejector to operate,
There is a risk of damaging or deforming the disc, 2:11jj playback head, or other parts.

[Means for Solving the Problems J The present invention has been made with the aim of solving the above-mentioned problems, and is characterized by the fact that a disk inserted through a disk insertion slot formed on the front side of the device is a rotation drive unit that rotationally drives the disc; a disc clamp member that presses the disc brought to the rotation drive unit E through the disc insertion slot onto the rotation drive unit; and a disc clamp member that presses the disc brought into the rotation drive unit E through the disc insertion slot, a day or ejecting member that is biased by and moved in the disc insertion direction against the biasing force as the disc is inserted; and a predetermined position to which the disc ffl ejecting member is moved as the disc is inserted. a locking member that locks the disc and the disc ejecting member are moved to the predetermined position to become operable, and an operation of moving the clamping means to the rotation drive unit and mounting the disc on the rotation drive unit; Consisting of parts 5
The ridgework member includes a first engaging portion for unlocking that engages with and releases the locking member in response to an operation of attaching the clamping means to the rotational drive portion, and a first engaging portion for unlocking the locking member. A second engaging portion that engages with the released disc ejecting member and locks movement in the disc ejecting direction is integrally formed, and by operating the operating member, the clamping means is moved to the rotational drive portion. In response to the movement of moving further apart, the second (7) engaging portion moves further away from the disk ejecting member i! 1
The disk drive device is configured such that the disk is ejected outward from the disk insertion slot by the disk ejection member.

[Function 1] This allows the disc ejecting member to perform the disc ejecting operation after the clamping member is completely released from the spindle by operating the operating member, and the timing is integrally formed in the operating member. The first
．． Since the second engaging portion is connected to the iqwt, all motions can be reliably controlled by operating the operating member, and unless the operating member is operated, various operations will not be performed due to external vibration. It is possible to provide a disk drive device that operates extremely reliably and is highly reliable, without malfunctions such as unlocking of the disk ejecting member due to such factors.

[Example] The details of the present invention will be described below based on the example shown in the drawings.

Figures 1 and 2 are exploded views of the drive device according to the present invention!
′! The frame of the device, indicated by reference numeral 43 and l in Figure 1 to show the assembled state, is formed in the shape of a housing that covers the bottom plate 1a, and a front panel 2 is fitted and fixed on the front side of the frame. .The front panel 2 has disks inserted vertically in parallel [cos 2a, 2a].
It further has openings 2b, 2b into which the clamp button 3 is fitted.

The base 4 is fixed at the center of the L face of the fly 141.

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

A spindle 5 is attached using the bearing part tb of the frame l while facing this notch 4a.The spindle 6 is attached to the upper side of the spindle 6, and the spindle 5 is attached to the lower side of the bearing part 1b. It has another spindle 7. 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 connected to a drive printed circuit board 9 on which a drive circuit is mounted. Driven.

Protruding pieces 1O1IO 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 and 10. A base portion of a clamp lever 12 is rotatably supported on this shaft 11.

The clamp lever 12 has an arm 1.2a at one end thereof,
The arm 12a faces in the direction of a head arm, which will be described later.

A button lever 13 is slidably provided above the base 4 and to the side of the clamp lever I2. The button lever 13 has a pair of bent portions 13a, 13a at its rear end, and a shaft 14 is horizontally suspended between the bent portions 13a, 13a. A clamp lever is attached to the shaft 14 to control the operation of the button lever.
A button rotor 15.degree. 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 clamping ring 16, and the other end of the shaft 17 is rotatably supported on a projection 12b protruding from one end of the clamp lever 12. .

The bent part 13a side of the button lever 13 faces the opening part 2b of the front panel 2, and the button 3 is fixed to the :i'g part on the front side thereof.

An eject plate 18 is arranged below the button lever 13. This eject board! 8 is slidably held at a predetermined height by guide bars 19 and 20 protruding from the base 4, as shown in FIG. A long hole 18a is formed along the axial direction into which the projections +9a and 20a are fitted.

A bent portion 18c is formed at the front end of the eject plate 18, and a bent portion 18d is formed downward at the tip thereof.As shown in FIG. The tip of the magnetic disk cassette 21 to be inserted is the eject plate 18
The cassette 21 is moved forward when the cassette 21 is installed.

Further, a bent portion 18e is formed downward on the outer edge side of the eject plate 18 near the bent portion 18e.
in the hanging position.

A latch 23 is placed above the button lever 13 and the eject plate 18, which are placed in a vertically stretched state, via a handle plate 22. The latch 23 is shaped like an I-4 (3: bent and raised one step higher), and this part becomes the bent part 22a facing the upper side of the button lever 13. J2 is rotatably supported via a spring 25 on 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, FIGS. 9 and 10 (A) -
As shown in (C), the latch 23 is formed into a flat plate shape. That is, the lie 123 is rotatably supported on a pin 24 protruding from the button lever 13 side, and is constantly pressed toward the button lever 13 side by the subring 25.

This latch 23 has a notch 23a formed in a W-shape in a part thereof. This notch 23a is open on the left side in FIGS. 9 and 1O.

Since the notch 23a is formed in a W-shape, 2
Recess 2 located on the back side having two recesses 23b and 23c
As shown in FIGS. 10(A) to 10(C), a bulging portion 23d that is convex toward the upper side is formed on the lower surface of 3e. The button lever 13 is protruded from the button lever 13 and cooperates with the bottle 26 to perform the following operations.

That is, when the button 3 is not pressed, the button lever 13
is located on the front side, so bin 2 (5 is latch 2)
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. The latch 23 is rotated counterclockwise about the bottle 24 as shown in FIG. 10(A).

When the bottle 26 reaches the open end of the notch 23a, the bottle 26 is fitted into the four portions 23b located outside the notch 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 Fig. 10.

When the button lever 13 is pressed again from this state, the bin 2
6 also moves forward, and the bottle 26 is moved clockwise by the spring 25 of the latch 23, causing the recess 23 c f on the back side.
Insert into ill. However, since the lower side of the four portions 23e 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 in the -L direction -E, and returns 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. Further, 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 protection 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, the clamp lever 12 is elastically supported by a cantilever, and a protrusion 30a protruding from the tip of the arm 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 support plates 35 arranged in parallel under L on its distal end side, and a head 36 is attached to the distal end of each support plate 35 so as to face each other. It is being The head carriage 34 has a protruding piece 34a on its side, and is slidably guided by a guide bar 34c fitted in an arcuate guide groove 34b formed on the lower surface of the protruding piece 34a.

A support frame 38 to which a steel belt 37 is attached is fixed to the projecting piece 34 a of the head carriage 34 . As is well known, the steel belt 37 has a wide part and a wide part, each of which has one end fixed to a support frame 38 and the other end fixed to a pulley 39. Further, the wide portion of the steel belt 37 is formed with an elongated hole into which the wide width portion is fitted, so that the width portion and the wide portion do not overlap each other.

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

The one indicated by No. n 41'C is a stopper that is used to prevent the head from moving beyond a certain range.
It plays the role of keeping the rotation angle within a certain range.

What is essential with reference numeral 42 is a solenoid that is a driving source for moving the heradbutt up and down, and the rod 42 a of this solenoid
A bottle 44, which is rotatably supported at the lower end of the link 43, is connected to the tip of the link 43. Furthermore, rollers 45.45 are supported on the shaft 44 on both sides of the link 43.

The 6-t type with reference numeral 46 is formed into a substantially L-shape with a bad arm, and a U'7-shaped bent part 46a formed at one end is rotatably supported by a pin 47 on the upper side of the solenoid 42. has been done. A pad 48 is fixed to the other end of this arm 46, and this pad 48 is connected to the movement of the solenoid 42 to load the head onto the disk.
Prevents disk shaking.

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 rod 42a, and the arm 46 is rotated up and down via the pin 49 about the pin 47.

A support frame 50 bent into a 14-shape above the carriage 34 is attached with its base end fixed to the carriage 34011, and the other end is attached to the - of the carriage 34.
A spring 51 extends in the L direction and is loaded between the carriage 34 and the tip of the support frame 50 to apply a constant load pressure to the head.

A leaf spring is arranged on the side of the carriage 34 in order to remove play in the herad 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, at 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.

In the measurement of the printed circuit board 9, the reference numeral 55 is a reference plate for adjusting the i' isk to the height of the head.

Other than that, what is shown in Figure 8 is a block diagram of the control circuit.
Controlled by microcomputer MC.

? In the RB diagram, reference numeral 101 indicates a motor control circuit for controlling the spindle motor 5, and the spindle motor 5 is controlled via this circuit. Reference numeral 102 designates a select circuit, which generates a necessary select signal from a plurality of select signals and issues commands to each internal circuit.

The reference numeral 103 is a helad load circuit, which controls the solenoid 42 for head loading. 104
is the position ff I# for controlling the stepper motor 40
In the control circuit, 105 is a detection circuit for receiving a signal from the sensor 53 and detecting the track position, and 106 is a control circuit for transmitting or receiving information to a plurality of heads.

Further, reference numeral 107 designates an index detection circuit for detecting an index, and 108 designates a pair of ready circuits for producing Ready No. 12 from Index No. 15.

By the way, in Figures 1 and 2, the upper disc (and the mechanism for the two discs) that are attached to the upper F are shown, but these clamp mechanisms and head roll mechanism button latch machines H4t and The media eject mechanism is also symmetrically present under the frame 1.

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

First, when the magnetic disk 21 is inserted into the insertion slot 2a on the upper side of the front panel 2, the disk is inserted into the frame! The ejection plate 18 moves forward along the guide portion formed by the base 4 and the ejection plate 18, contacts the bent portion 18d at the tip of the ejection plate 18, and is inserted deep into the ejection plate 18 while pushing the ejection plate 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 direction of one piece are indicated by adding + and - signs to the x, y, and z numbers shown by arrows in FIG. 2.

When the button lever 13 moves in the +X direction, the link 16
is rotated counterclockwise in FIG.
The tip of the arm 12a contacts the protrusion 30a at the tip of the load arm 30 and pushes it downward.As a result, the load arm 30 is pushed in the -Z force direction, and The disk is clamped between the attached center cone 31 and the spindle 6. In this state, the spin router 8 is rotated at a constant speed by a driving substrate 9, 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 is rotated by the rotation of the stepper motor 40, and the steel belt 3 is wound up and unwound once, thereby moving in the +X or -X direction and performing one positioning. This movement is constantly monitored by the sensor 53. The carriage is guided by the guide pawl 34c and moves 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 -Z force direction by driving in the direction, and the bad arm 46 rotates in the same -Z direction. The bad arm 46 supports the helad arm, and the arm 4
6 is rotated in the -Z direction, the support for the rad 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, Disc 21! When the four ejection plates are placed, the eject plates 18 move at the same time, accumulating energy in the spring 28, and applying rotational force about the shaft as a fulcrum. When the disk 21 is pushed to the fully installed state, the protrusion 4b protruding from the rear end 4 engages with the rear end of the bent portion 18e, thereby locking and maintaining the installed 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
21 In Fig. 7, the protrusion protrudes from the side opposite to the arm 12a because it is rotated clockwise! 2c lowers and engages with the bent portion 18c of the eject plate 18 to prevent the eject plate 18 from moving back by the spring 28.

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

Although the above explanation is only for the disk mounted on the upper side, exactly the same operation is performed for the disk on the lower side.

Since this embodiment is configured as described above, multiple disks can be driven by a common drive source, and the heads can be moved by a common drive source, reducing the number of parts and improving the efficiency of use of mechanical parts. By changing the direction to -L, the entire ``A'' position can be made smaller.

Furthermore, power consumption can be reduced by using the same drive sources as the spindle motor and stepper motor.

In the above embodiment, two disks are exemplified as a structure capable of driving two disks, but it is also possible to install two spindle motors or drive more disks from one spindle motor via a power transmission means such as a belt. It is of course possible to drive two or more disks by driving the -j'f disk holding i side.

[Effects of the invention 1 1. As explained above, according to the disk drive device of the present invention, the disk is always ejected to the outside of the device after the disk is completely released from the state in which the disk is attached by the spindle and the clamp member. It is possible to reliably prevent damage and deformation of various types of heads, and to realize a disk drive device that is safe and operates reliably.

Then, the timing of this disk ejection operation is controlled by
Since the operation member itself is used to clamp and unclamp the disk, the timing of each operation can be reliably controlled according to the operation of the operation member, and this is extremely effective without causing malfunctions due to external vibrations, etc. This makes it possible to realize a highly reliable disk drive device.

[Brief explanation of drawings]

The drawings are for explaining one embodiment of the present invention, and FIG. 1 is an exploded perspective view, FIG. 2 is an overall perspective view, FIG. 3 is a perspective view showing the interlocking relationship of the clamp lever, button lever, and load arm, and FIG. Figure 4 is a plan view, Figure 5 is an I-V plane view showing the loading mechanism using a solenoid, Figure 6 is a side view explaining the spindle part, and Figure 7 is a perspective view showing the interlocking relationship of the eject plate with the clamp lever. 8 is a block circuit diagram explaining the control method, and FIG. 9 is a perspective view showing the structure of the latch.
FIGS. 10(A) to 10(C) are explanatory diagrams of the operation of the latch. l-...F L/-M 2...-Front panel:
3...Button 4...Base 5...Spindle motor f5.7...Spindle 9...Printed circuit board 12
- Clamp lever I3... Button lever 16.43... Link 18... - Eject plate 23
...Latch 30...Load arm 31...
・Center cone 34...-Carriage 35...-Support plate 36...
Head 37... - Steel belt: 39...
Pulley 40...Stepper motor 42...Solenoid 46...-Bad arm 53...Sensor Figure 3 Silk 8 Figure j Figure 9 Figure 10

Claims (1)

[Scope of Claims] A rotary drive unit that rotationally drives a disk inserted through a disk insertion port formed on the front side of the device, and a rotation drive unit that rotates the disk that is inserted through the disk insertion port and drives the disk that is brought onto the rotation drive unit through the disk insertion port. a disk clamp member that presses against the rotation drive unit; a disk ejection member that is biased in a direction opposite to the disk insertion direction and is moved in the disk insertion direction against the biasing force as the disk is inserted; a locking member that locks the disc ejection member at a predetermined position moved with the insertion operation of the disc; a locking member that becomes operable when the disc ejection member is moved to the predetermined position; an operating member for mounting the disk on the rotational drive unit by moving the disc to the rotational drive unit; a first engaging portion for unlocking the unlocked disc ejecting member; and a second engaging portion that engages with the unlocked disc ejecting member and locks movement in the disc ejecting direction. are integrally formed, and when the operation member is operated to separate the clamping means from the rotary drive unit, the second engaging portion is separated from the disk ejecting member, and the disk ejecting member moves the clamping means away from the rotational drive portion. A disk drive device characterized in that the disk is configured to be ejected outward from the disk insertion slot.