JPH0235654A - Disk driving device - Google Patents

Abstract

PURPOSE:To surely prevent an accident such as the damage and deformation of a disk, a head, and a various kinds of mechanisms by providing an operating button, a rotary member, a clamping member, a disk ejecting member, and a control member, and always performing the ejection of the disk after a loading state by a spindle and the clamping member is completely released. CONSTITUTION:The clamping member 12 to engage the disk inserted from a disk insertion port 2a with the rotary members 5 and 6 to rotate and drive the disk is provided. Also, the disk ejecting member 18 locked after being moved in a direction of disk insertion with the inserting operation of the disk and also, released corresponding to the depressing operation of the operating button 3 and to eject the disk from the disk insertion port 2a by the elastic force of a spring 28 is provided. Furthermore, the control member 23 to engage the disk with the rotary members 5 and 6 and to release the engagement of the disk with the rotary members 5 and 6 interlocking with the recovery operation of the operating button 3 and to enable the ejecting operation of the disk of the disk ejecting member 18 is provided. In such a way, it is possible to provide profitability in point of space and to improve operability, and also, to surely prevent the accident from being generated.

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 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 spindle. 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, as devices become smaller and thinner, the space for the panel that forms the opening for inserting the disc also becomes smaller, and the disc insertion opening is formed in the shape of a thin slit.
And the space around it is also reduced! has been done. Therefore, when ejecting the disk, it becomes difficult to remove the disk from the slit, so when the operation member releases the engagement between the spindle and the clamp member, the disk is ejected to the outside of the device from the disk insertion opening. Some discs are equipped with a disc ejecting member.

However, according to this type of conventional device, if there are variations in the mechanism or timing errors due to dimensional errors or assembly errors of each mechanism component, the disk is completely removed from the spindle and the clamp member. There is a risk that the disk ejection mechanism will operate before the release is released, damaging or deforming the disk, recording/reproducing head, or other components.

The present invention was made in view of these problems, and
A disk configured such that the disk is ejected after it is completely released from a spindle and a clamp member, and which can be realized using a button-type operating member that is advantageous in terms of space and has good operability. The object of the present invention is to provide a driving device.

In order to achieve the above object, according to the present invention, the device is locked at the pressed position by pressing from a released position that can project outward, and returned to the released position by pressing at the pressed position. an operation button, a rotating member that rotationally drives a disk, and a rotating member that is arranged so as to be able to move toward and away from the rotating member, and that drives the disk that is inserted onto the rotating member from a disk insertion opening formed in the device into the rotating member. A clamp member is pressed and engaged with the clamp member, and when the disc is inserted, the clamp member is moved in the disc insertion direction against a spring and is locked in that moving position, and is moved from the release position of the operation button to the clamp member. a disk ejection member that is unlocked in response to a pressing operation to a pressed position and ejects the disk from the disk insertion slot by the elastic force of the spring accumulated when the disk is inserted when the disk is ejected; The clamp member is moved to the rotating member in conjunction with the pressing operation from the release position to the pressed position, the disc is engaged with the rotating member, and the operation button is moved from the pressed position to the released position. A control member that separates the clamp member from the rotating member in conjunction with the return operation, releases the engagement between the disk and the rotating member, and enables the disk ejecting member to eject the disk. Adopted.

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

1 and 2 show a disassembled state and an assembled state of the drive device according to the present invention, and the frame of the device indicated by the reference numeral 1 in the figures is formed in the shape of a casing having a bottom plate 1a, and the front side of the frame is A front panel 2 is fitted and fixed on the 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 1.

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 for blocking noise generated from the spindle motor 5 is arranged below the spindle motor 5, and the spindle motor 5 is driven by a printed tea branch 9 for driving 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 to, to. 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.

The shaft 14 rotatably supports button rollers 15, 15 for transmitting the operation of the button lever to the crank lever 12, and a crank link 16 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 formed at the front end of the eject plate 18, and a bent portion 18d is formed downward at the tip.
As shown in FIG. 7, the leading end of the magnetic disk cassette 21 mounted through the underside of the base 4 comes into contact with the bent portion 18d of the eject plate 18, and is advanced when the cassette 21 is mounted.

Further, a bent portion 18e is formed downward on the outer edge side of the bent portion 18c of the eject plate 18, and this bent portion 18e engages with a protrusion 4b protruding from the base 4. It is in a position where it can be matched.

A latch 23 is mounted above the button lever 13 and the eject plate 18, which are arranged in a vertically overlapping manner, with a plate 22 interposed therebetween. 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, FIGS. 9 and 10 (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 10.
In the figure, the left side is open. Since the notch 23a is formed in a W-shape, there are two four parts 23b and 23c.
As shown in FIGS. 10(A) to 10(C), the lower surface of the recessed portion 23c located on the rA side is formed with a bulged portion 23d that is convex toward the upper side. And button lever 13
The following operations are performed in cooperation with the bottle 26 which is provided above.

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
not in contact with. When the button lever 13 is pressed in this state, the bottle 26 moves forward and advances along the curved part 23e formed on the open side edge of the notch 23a of the latch 23. In this case, 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 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 Fig. 10.

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 pin 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 1 side via a leaf spring 33. Therefore, the protrusion 3 protruding from the tip of the arm is elastically supported on a cantilever.
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 support plates 35 arranged vertically and parallel to each other 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. There is. 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 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 the description is such that the narrow and wide portions do not overlap.

The pulley 39 is fixed to the tip of an output shaft 40a of a step motor 40 attached to the frame 1 side.

A stopper 41 serves to keep the rotation angle of the stepper motor 40 within a certain range in order to prevent the movement of the head from exceeding a certain range.

Reference numeral 42 designates a solenoid that is a driving source for moving the head 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 bad 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 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, 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 a reference plate 55 on the side of the printed circuit board 9 is used to adjust 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.

A head loading circuit 103 controls a solenoid 42 for performing rad loading. 104
105 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 a detection circuit for transmitting or receiving information to a plurality of heads. It is a 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 the frame 1 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. 18d, and is inserted all the way to the back while pushing the eject 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, right, left, and top and bottom directions are indicated by adding + and - signs to the X, Y, and Z numbers indicated by arrows in FIG. 2.

When the button lever 13 moves in the +X direction, the link 16
is rotated counterclockwise in FIG.
The arm 12a is rotated clockwise around the load arm 30, and the tip of the arm 12a comes into contact with the protrusion 30a at the tip of the load arm 30, pushing it downward. As a result, the load arm 30 is pushed in the -Z direction, and the disk is clamped between the center cone 31 attached to the load arm 30 and the spindle 6. In this state, the spindle motor 8 is rotated at a constant speed by the drive substrate 9, causing the disk to rotate at a predetermined rotational speed.

The head 36 is positioned using the Herad carriage 34! It is carried out by three imperial orders. That is, the pulley 39 is rotated by the rotation of the stepper motor 40, and the steel belt 37 is wound and unwound to be moved in the +X or -X direction and positioning is performed. This movement is constantly monitored by the sensor 53. The third shift of the carriage is performed while being guided by the guide bar 34c, and is performed 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 direction by driving in the direction, and the bad arm 46 rotates in the same -Z direction. The pad arm 46 serves as a support for the helad arm, and since the arm 46 is rotated in the -Z direction, the support for the helad arm is removed, and the head is loaded onto the media by the force of the spring 510.

On the other hand, the latch 23 and pin 2 hold and release the disc.
6. That is, pressing the button 3 once activates the latch, and pressing the button a second time releases the latch.

By the way, when the disk 21 is mounted, the eject plate 18 simultaneously stores energy in the spring 28 and is given a rotational force about the shaft as a fulcrum. When the disk 21 is pushed to the completely installed state, the protrusion 4b protruding from the base 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 pin 26 protruding from its upper surface engages eight times, the latch 23 rotates around the pin 24, and the eject plate 18 is moved. Protrusion 4 for pushing to the right in Figure 7
b is disengaged from the bent portion 18a.

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 12g lowers and engages with the bent portion 18c of the eject plate 18, thereby preventing the spring 28 from retracting the eject plate 18. do.

To take out the disc 2I, 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 for the disk mounted on the upper side, but the same operation is performed for the disk on the lower side.

Since this embodiment is configured as described above, a plurality of disks can be driven by a common drive source, and eight shifts of the head can be performed by a common drive source, which reduces the number of parts and improves the mechanical parts. Usage efficiency 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, a structure capable of driving two disks was exemplified, but it is possible to provide two spindle motors or to connect more disk holding mechanisms from one spindle motor via a power transmission means such as a belt. Of course, it is also possible to drive two or more disks by driving.

As is clear from the above description, according to the present invention, the disk is always ejected to the outside of the apparatus after the disk is completely released from the spindle and the clamp member. , can reliably prevent accidents such as damage or deformation of the head and various mechanisms.
It is possible to realize a disk drive device that is safe and operates reliably, and it is also possible to effectively use a button-type operating member that is easy to operate and is advantageous in terms of space, and has the effect of facilitating miniaturization and thinning. .

[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. FIG. 8 is a block circuit diagram explaining the control method; FIG. 9 is a perspective view showing the structure of the latch; FIGS. 10 (A) to (C) are FIG. 3 is an explanatory diagram of the operation of the latch. 1... Frame 2... Front panel 3.
・・Button 4・Base 5・Spindle 7・Spindle 9・Printed circuit board 12・Clamp lever 1
3... Button lever 16, 43... Link 18.
... Eject plate 30 ... Load arm 34 ... Carriage 36 ... Head 39 ... Pulley 42 ... Solenoid 53 ... Sensor 23 ... Latch 31 ... Center cone 35 ... Support plate 37...Steel belt 40...Stepper motor 46...Bad arm Patent applicant Canon Electronics Co., Ltd. Representative Patent attorney Takashi Kato Figure 3 Figure 8

Claims (1)

[Scope of Claims] 1) An operation button that is locked in the pressed position by being pressed from a released position that can project outward from the device, and that returns to the released position by being pressed in the pressed position, and a disk. a rotating member that is rotatably driven; and a disk that is arranged so as to be movable towards and away from the rotating member and that is inserted onto the rotating member through a disk insertion opening formed in the device, and presses the disk against the rotating member. A clamp member to be engaged is moved in the disk insertion direction against a spring with the insertion operation of the disk, and is locked in that moving position, and when the operation button is pressed from the release position to the pressing position. a disk ejecting member that is unlocked in response to the disc ejection, and ejects the disk from the disk insertion slot by the elastic force of the spring accumulated when the disk is inserted when the disk is ejected; The clamp member is moved to the rotary member in conjunction with the pressing operation of the button to engage the disc with the rotary member, and the clamp member is moved to the rotating member in conjunction with the operation of returning the operating button from the pressed position to the release position. A disk drive device comprising: a control member that separates a clamp member from the rotating member to release the engagement between the disk and the rotating member and enables the disk ejecting member to perform a disk ejecting operation.