JP3651308B2 - Recording medium mounting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a recording medium mounting apparatus, and more particularly to a recording medium mounting apparatus configured to automatically eject a recording medium that has been written or read.
[0002]
[Prior art]
For example, an electronic device such as a personal computer or a word processor is equipped with a magnetic disk device as means for recording information. In the magnetic disk device, when a disk cartridge as a recording medium is loaded, the magnetic disk housed in the disk cartridge is rotated and the magnetic head slides on the magnetic disk to perform magnetic recording / reproduction.
[0003]
In the magnetic disk apparatus as described above, the disk holder into which the disk cartridge is inserted and the cartridge insertion / eject position (second position) to the cartridge mounting position (first position) by the disk cartridge insertion operation. There is provided a recording medium mounting device that includes a sliding slider and moves the disk holder from the recording medium unloading position to the recording medium loading position in conjunction with the sliding of the slider.
[0004]
Generally, in the conventional magnetic disk device, the disk holder is moved from the recording medium loading position to the recording medium unloading position by pushing the eject button attached to the front end of the slider, and the disk cartridge is ejected. Has been.
However, conventionally, since the disk cartridge is ejected by pressing the eject button, for example, the disk cartridge is ejected even when the magnetic head is ejected during writing or reading. There was a problem.
[0005]
Accordingly, a recording medium mounting apparatus is being developed that eliminates the mechanical ejection mechanism that uses the pressing force of the ejection button as a drive source and employs an auto-ejection mechanism that ejects the disk cartridge with the driving force of the motor. Therefore, in the recording medium loading apparatus incorporating the auto-eject mechanism, even if the disk cartridge is instructed to be ejected, the ejection operation is not performed until the writing or reading by the magnetic head is completed.
[0006]
Here, a specific example of a recording medium mounting apparatus incorporating an auto-eject mechanism will be described with reference to FIG.
As shown in FIG. 19, the magnetic disk device 1 includes a disk holder 2 into which a disk cartridge (not shown) is inserted, and a slider 3 that slides in the front-rear direction to raise and lower the disk holder 2 on the frame 4. Is attached. The slider 3 is slidable on the frame 4 in the A and B directions. When the disk cartridge is inserted, the latch lever 5 rotates in the clockwise direction to open a disk cartridge shutter (not shown) and unlock the slider 3.
[0007]
Therefore, the slider 3 urged in the A direction by the spring force of the coil spring 3b slides in the A direction to lower the holder 2 from the recording medium unload position to the recording medium load position. Thereby, the disc cartridge inserted into the holder 2 is mounted on the turntable.
When the eject signal is output, the gear 7a is rotationally driven by a motor (not shown) of the auto eject mechanism 7, and the eject slider 7b having a rack with which the gear 7a is engaged is driven in the B direction. As a result, the rising portion 7c of the eject slider 7b comes into contact with the rising portion 3a provided at the left end portion of the slider 3 and presses in the B direction.
[0008]
Therefore, the slider 3 slides in the B direction to raise the holder 2 from the recording medium loading position to the recording medium unloading position. When the slider 3 slides in the B direction, the latch with respect to the latch lever 5 is released. As a result, the latch lever 5 rotates counterclockwise by the spring force of the torsion spring 6 and pushes the disk cartridge in the disk holder 2 in the eject direction.
[0009]
A damper mechanism 8 that cushions the operation of the slider 3 is provided on the upper surface of the disk holder 2. The damper mechanism 8 includes a damper plate 8a that is rotatably supported by the slider 3 with one end engaged with the frame 4, and a damper spring 8b that urges the other end of the damper plate 8a to rotate. .
[0010]
[Problems to be solved by the invention]
By the way, in the recording medium mounting apparatus incorporating the auto-eject mechanism as described above, since the motor is used as the ejection drive source, when the power is turned off after the ejection operation is started, the ejection operation is not completely completed. It stops in the state. When the power is next turned on in this state, the magnetic disk device determines that the disk is mounted and automatically spins up (spindle motor is activated).
[0011]
However, as described above, the recording medium mounting apparatus is in a state where the ejection operation is not completely completed (the disk loading is incomplete), and therefore the disk or drive mechanism may be damaged if it is automatically spun up. There is.
As a method of coping with this, (1) a method of detecting that the previous ejection operation has not been completed, and (2) a method of always performing an ejection process immediately after the power is turned on can be considered.
[0012]
However, in the above method (1), two sensors are required to detect that the ejection operation is incomplete. That is, an ejection completion position sensor for detecting the ejection completion position and a loading completion position sensor for detecting the loading completion position are required.
Therefore, if not considering the abnormal state as described above (a state where the power is cut off during operation), one position sensor is sufficient, but two sensors must be provided, resulting in an increase in product cost. There is a point. Furthermore, since it is necessary to read two position sensor outputs output from each sensor, two LSl ports are also required. For this reason, the number of parts may increase, and a large-sized LSI package may be used, which also causes an increase in cost.
[0013]
On the other hand, in the method (2), the user of the magnetic disk apparatus is required to always use the disk while it is in the apparatus, and the specification that the disk cartridge is ejected every time the power is turned on is a computer. There is a problem that it is difficult for a user to accept it as a peripheral device.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a recording medium mounting apparatus capable of preventing the recording medium from being damaged even when the power is cut off during the ejection operation. .
[0014]
[Means for Solving the Problems]
In order to solve the above problems, a recording medium mounting apparatus according to the present invention includes:
A recording medium discharge switch operated when the recording medium is discharged;
A drive unit for driving a discharge mechanism for discharging the recording medium;
Detecting means for detecting that the discharge mechanism has completed the discharge processing of the storage medium, and outputting a discharge processing completion signal;
Drive start information indicating that the drive unit has started driving is stored at the start of driving of the drive unit, and storage means configured to erase the drive start information by outputting the discharge process completion signal;
Control means for starting the drive unit and discharging the recording medium when the storage means stores the drive start information when the recording medium discharge switch is operated and when the power is turned on; Is provided.
[0015]
According to the above configuration, since the detection unit only needs to detect that the discharge mechanism has completed the discharge processing of the storage medium, one detection unit is sufficient. Therefore, an increase in cost of the recording medium mounting device can be suppressed.
The storage means stores drive start information until the discharge process completion signal is output after the drive unit starts driving. For this reason, depending on whether or not the storage means stores the drive start information at the time when the power is turned on, the previous power-off was performed during the ejection of the recording medium or performed appropriately. Can be determined.
[0016]
Therefore, when the storage means stores the drive start information at the time when the power is turned on, it can be determined that the previous power-off was performed during the ejection of the recording medium. In this case, the control means performs a process of starting the drive unit and discharging the recording medium.
As a result, the process of discharging the recording medium is performed only when the previous power-off was performed in the middle of discharging the recording medium. When the previous power-off was performed properly, the recording medium was discharged. The processing to be performed may be configured not to be performed. Therefore, when the power is properly turned off, the recording / reproducing process can be started with the recording medium mounted on the recording medium mounting apparatus, and the user's request can be met.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing a state before insertion of a disk cartridge in a magnetic disk apparatus to which an embodiment of a recording medium mounting apparatus according to the present invention is applied. FIG. 2 is a plan view showing a disk cartridge mounted state.
[0018]
As shown in FIGS. 1 and 2, the recording medium mounting device 11 incorporated in the magnetic disk device 10 slides in the A and B directions with a disk holder 12 into which a disk cartridge (not shown) is inserted. A slider 14 for raising and lowering the disk holder 12 is attached on the frame 16. The slider 14 is slidable on the frame 16 in the A and B directions, and slides in the A direction by the disk cartridge insertion operation to lower the holder 12 from the recording medium unloading position to the recording medium loading position.
[0019]
A turntable 50 driven by a disk rotating motor and a head carriage 18 are provided from below the frame 16 so as to protrude onto the flat surface 16 a of the frame 16. A circuit board (not shown) having a control circuit is attached to the lower surface side of the frame 16.
Further, on the flat surface 16a of the frame 16, a head carriage drive unit 20 that drives the head carriage 18, a latch mechanism 22 that locks the slider 14, and an auto-eject mechanism that drives the slider 14 in the ejection direction (B direction). 24 and a head carriage lock mechanism 25 that locks the head carriage 18 in a non-movable state when writing or reading by the magnetic head is not performed.
[0020]
Thus, in the present embodiment, the head carriage lock mechanism 25 is provided on the right side of the head carriage 18, and the auto eject mechanism 24 is disposed on the left side of the head carriage 18.
In addition, a damper mechanism 26 that cushions the sliding motion of the slider 14 and an erroneous insertion prevention mechanism that prevents the disk cartridge from being inserted into the disk holder 12 when the disk cartridge is inserted in the wrong direction on the lower surface of the slider 14. 28 are provided. The damper mechanism 26 includes a damper plate 30 (shown by a broken line in FIG. 1) that is rotatably supported on the shaft 29 of the slider 14 with one end 30a engaged with the frame 16 in the same manner as the conventional one. The damper plate 30 includes a damper spring 32 that rotationally biases the other end of the damper plate 30. One end 32 a of the damper spring 32 is hooked on the hook portion 30 b of the damper plate 30, and the other end 32 b is hooked on the hook portion 14 i of the slider 14.
[0021]
In the damper mechanism 26, when the slider 14 is positioned on the B direction side from the intermediate position between the A direction side position and the B direction side position, the spring force of the damper spring 32 urges the slider 14 in the B direction. When the slider 14 is positioned in the A direction from the intermediate position, the spring force of the damper spring 32 operates so as to urge the slider 14 in the A direction.
[0022]
That is, when the slider 14 moves from the position on the B direction side to the position on the A direction side, the damper mechanism 26 urges the slider 14 in the B direction (the direction opposite to the moving direction of the slider 14) in the first half. In the second half, the slider 14 is urged in the A direction (the same direction as the movement direction of the slider 14). As a result, the initial movement speed of the slider 14 is decreased, and the final movement speed of the slider 14 is increased.
[0023]
The slider 14 is locked by a latch mechanism 22 and slides in the direction A by a disk cartridge insertion operation to lower the disk holder 12 from the recording medium unload position to the recording medium load position. The latch mechanism 22 includes a latch lever 44 that locks the slider 14 and a coil spring 48 that biases the latch lever 44 counterclockwise.
[0024]
One end of the coil spring 48 is latched by the latch lever 44 and the other end is latched by the slider 14, and the latch lever 44 is biased counterclockwise and the slider 14 is biased in the A direction. . Thus, the number of parts is reduced by making the spring for urging the latch lever 44 and the spring for urging the slider 14 common.
[0025]
The latch lever 44 has an engaging portion 44 a that engages with the shutter of the disk cartridge and a locking portion 44 b that is locked to the upright portion 14 g of the slider 14 as in the conventional case. The latch lever 44 is Of the holder 12 Arranged at the top.
[0026]
As a result, the slider 14 slides in the A direction by the spring force of the coil spring 48 hooked on the right end, and lowers the disk holder 12 to the recording medium loading position. Thus, the magnetic disk of the disk cartridge inserted into the disk holder 12 is mounted at the recording medium loading position and clamped by the turntable 50 so as to be rotationally driven.
[0027]
In addition, when an eject signal is input by operating the eject button 88 in the disk mounting state shown in FIG. 2, when writing or reading to the magnetic disk mounted as described above is completed, FIG. As shown, the auto-eject mechanism 24 is driven to slide the slider 14 in the B direction to raise the disk holder 12 to the recording medium unload position and to release the latch lever 44 from being locked.
[0028]
Accordingly, the latch lever 44 is rotated counterclockwise by the spring force of the coil spring 48 to eject the disk cartridge in the disk holder 12 in the A direction.
Therefore, the auto-eject mechanism 24 prevents the disk cartridge from being ejected until the writing or reading is completed even when the magnetic head is ejected during writing or reading.
[0029]
FIGS. 3A and 3B are a plan view and a left side view showing an enlarged main part of the auto-eject mechanism 24. The auto eject mechanism 24 is controlled and driven by an MPU 102 (see FIG. 13) described later.
As shown in FIGS. 3A and 3B, the auto-eject mechanism 24 has an upright portion 52 formed at the left end portion 14f of the slider 14 and an eccentric pin 54 that contacts and drives the upright portion 52. The rotating body 56 includes a motor 58 that rotates the rotating body 56, and a detection switch 100 that is disposed to face the lower surface of the rotating body 56.
[0030]
As shown in FIG. 13, a switch OFF region 56A and a switch ON region 56B having a semicircular shape when viewed from the bottom are formed on the lower surface of the rotating body 56. The switch OFF region 56A and the switch ON region 56B have different thicknesses, and therefore a step is formed between the switch OFF region 56A and the switch ON region 56B. The switch OFF region 56A is a thinned portion in the rotating body 56, and the switch ON region 56B is a thickened portion.
[0031]
The detection switch 100 is fixed at a predetermined position below the rotating body 56. When the detection switch 100 faces the switch OFF area 56A, the detection switch 100 is separated from the lower surface of the switch OFF area 56A and is in an OFF (open) state. Further, when the detection switch 100 is opposed to the switch ON region 56B, the detection switch 100 is in an ON (closed) state by being pressed against the thick switch ON region 56A. Has been.
[0032]
On the other hand, the upright portion 52 extends obliquely with respect to the disc cartridge insertion / ejection direction (A and B directions) and the C and D directions. Therefore, as described later, when the eccentric pin 54 presses the rising portion 52 of the slider 14 in the ejecting direction (B direction) by the rotation of the rotating body 56, the rising portion 52 has a force Fa in the B direction and a force Fb in the C direction. And are given. As a result, a force to rotate the slider 14 counterclockwise acts, and the spring force Fd of the damper spring 32 of the damper mechanism 26 and the spring force Fe of the coil spring 48 that urges the slider 14 in the A direction. It is possible to cancel the force to rotate clockwise by the action.
[0033]
Therefore, the slider 14 is prevented from being pressed against the side wall of the frame 16, and the sliding resistance is reduced. Therefore, the slider 14 can slide smoothly in the ejection direction (B direction).
A connector 36 to which a flexible wiring board 34 drawn from the head carriage 18 is connected and a flexible wiring board 38 drawn from the auto eject mechanism 24 are connected between the head carriage 18 and the auto eject mechanism 24. A connector 40 is attached.
[0034]
Since the connectors 36 and 40 are provided in an oblique direction with respect to the A and B directions and the C and D directions, the space in the depth portion can be effectively used. In addition, since the flexible wiring boards 34 and 38 are connected to the connectors 36 and 40 so as to alternate from opposite directions, the flexible wiring boards 34 and 38 do not cross each other and can be wired compactly.
[0035]
FIG. 4 is an exploded perspective view showing a schematic configuration of the recording medium mounting apparatus.
As shown in FIG. 4, the disc holder 12 includes a top plate 12a and cartridge guide portions 12b and 12c bent so as to hold the disc cartridge from both sides of the top plate 12a. Therefore, the space surrounded by the top plate 12a and the cartridge guide portions 12b and 12c on both sides is the cartridge insertion portion.
[0036]
Further, a pair of engaging pins 12 e that engage with the slider 14 are provided on both sides of the disk holder 12, and guide portions 12 f and 12 g protrude from the center of both sides of the disk holder 12. The guide portions 12 f and 12 g are fitted into guide grooves 16 d and 16 e provided on the side walls 16 b and 16 c of the frame 16 to guide the lifting and lowering operation of the disc holder 12.
[0037]
The slider 14 is slidably mounted above the disc holder 12, and is provided on a J-shaped flat plate 14a, side surfaces 14b and 14c bent downward from both sides of the flat plate 14a, and side surfaces 14b and 14c. And the engaging pin 12e of the disc holder 12 is fitted into the inclined groove 14d, and the engaging hole 14e is engaged with the projecting portion 16f projecting to the center of both sides of the frame 16.
[0038]
The frame 16 is provided with a mounting hole 16g to which the turntable 50 is mounted at the center of the flat plate 16a.
FIG. 5 is an exploded perspective view showing a schematic configuration of the head carriage mechanism.
As shown in FIG. 5, the head carriage 18 includes a carriage body 19 that supports the lower magnetic head 61 on the top surface of the tip, and a head arm 60 that supports the upper magnetic head 62 on the bottom surface of the tip.
[0039]
The head carriage 18 is provided so as to be movable while being guided by guide shafts 66 and 68 extending in the front-rear direction (A and B directions). On the left and right side surfaces of the head carriage 18, bearing portions 18 a and 18 b to which the guide shafts 66 and 68 are slidably fitted are provided.
The bearing portion 18a is a main bearing that is formed by a circular hole through which the main guide shaft 66 passes, and that regulates the horizontal position and height position of the head carriage 18. Further, since the bearing portion 18b is a U-shaped bearing into which the guide shaft 68 is fitted, the movement direction and the left-right direction are not restricted, and only the height position of the head carriage 18 is restricted.
[0040]
The head carriage 18 is guided in the guide shaft 66 and the guide shaft 68 by a driving force from a voice coil motor 64 of a carriage moving mechanism, which will be described later, and moves in the A and B directions. As a result, the magnetic heads 61 and 62 supported by the head carriage 18 can be slidably contacted with desired tracks on a magnetic disk (not shown) housed in the disk cartridge to perform magnetic recording / reproduction. .
[0041]
A lower suspension 70 is sandwiched and fixed on the upper surface of the arm portion 19a extending in the A and B directions of the carriage body 19 between the mounting plate 72 and the lower suspension 70 formed of a leaf spring via a lower block 73. A lower magnetic head 61 is attached. A flexible wiring board 34 is soldered to the lower magnetic head 61.
[0042]
The head arm 60 is fixed to the base 19 b of the carriage body 19 via a plate spring 74, and the end of the plate spring 74 is fixed to the base 19 b by a mounting plate 76. Therefore, the head arm 60 is supported so as to be pivotable in the vertical direction by the plate spring 74 and is biased downward by the torsion spring 77. A flexible wiring board 34a is soldered to the upper magnetic head 62 attached to the tip of the head arm 60. The flexible wiring board 34 a is connected to the flexible wiring board 34 at the rear end of the carriage body 19.
[0043]
The base 19b of the carriage body 19 has recesses 19c and 19d on both the left and right sides, and a coil 78 is attached to the recesses 19c and 19d. A center yoke 80 is inserted into the internal space of the coil 78. The center yoke 80 is held in such a direction that both ends are coupled to both side portions 82 a and 82 b of the side yoke 82 and extend in the moving direction (A and B directions) of the head carriage 18. Further, the side yoke 82 has a plate-like magnet 84 attached to the lower surfaces of both side portions 82a and 82b.
[0044]
Therefore, the coil 78 of the carriage body 19 is incorporated so that the upper part is interposed between the center yoke 80 and the magnet 84, and a driving force in the A and B directions is given by the electromagnetic repulsive force against the magnetic force of the magnet 84. Is done. Accordingly, the coil 78, the center yoke 80, the side yoke 82, and the magnet 84 constitute a voice coil motor 64.
[0045]
FIG. 6 is a front view of the magnetic disk device.
As shown in FIG. 6, a front bezel 87 having a disk insertion slot 86 is attached to the front end portion of the frame 14. An eject button 88 is provided on the lower right side of the front bezel 87. The eject button 88 is attached so as to output an eject signal by pressing an eject switch (not shown) disposed inside the front bezel 87.
[0046]
Further, on the back side of the front bezel 87, a flap 89 for closing the disc insertion slot 86 from the inside is provided so as to be rotatable in the opening / closing direction. Further, the small hole 90 arranged on the upper side of the disk insertion port 86 inserts a rod from the outside and presses the upright portion 14j provided at the front end of the slider 14 in the B direction when the auto eject mechanism 24 fails. This is for the eject operation.
[0047]
FIG. 7 is a side view showing a disc insertion / ejection state in which the disc holder 12 and the slider 14 are combined.
As shown in FIG. 7, since the engaging pin 12e of the disk holder 12 is fitted in the inclined groove 14d of the slider 14, the engaging pin 12e is moved along the inclined groove 14d by the sliding operation of the slider 14. Driven. Therefore, when the slider 14 is slid in the direction B from the cartridge mounting position (first position) by the disk cartridge insertion operation to reach the cartridge insertion / eject position (second position), the disk holder 12 is unloaded from the recording medium. Ascend to the load position.
[0048]
When the slider 14 is slid in the direction A from the cartridge insertion / ejection position (second position) to the cartridge mounting position (first position) by the ejection operation, the disk holder 12 is lowered to the recording medium loading position. To do. Accordingly, the disk holder 12 and the slider 14 constitute a recording medium transport mechanism.
Here, the operation of the auto-eject mechanism 24 constituting the main part of the present invention will be described.
[0049]
FIG. 8 is an enlarged plan view showing the operating state of the auto-eject mechanism 24 before the disk cartridge is inserted. FIG. 9 is an enlarged plan view showing an operation state when the disc cartridge is inserted. FIG. 10 is an enlarged plan view showing the operating state during ejection. FIG. 11 is an enlarged plan view showing the operating state of the latch release setting position. FIG. 12 is an enlarged plan view showing a state where the slider 14 has moved to the innermost position.
[0050]
As shown in FIG. 8, in the auto-eject mechanism 24 before the disk cartridge is inserted, the slider 14 slides in the direction B, so that the upright portion 52 formed on the left end portion 14f of the slider 14 has an eccentric pin 54. Further, it is in a standby position that is spaced apart by approximately the diameter dimension of the rotating body 56 in the B direction.
The standby position of the eccentric pin 54 is set on the D direction side with respect to the imaginary line in the A and B directions passing through the rotation center of the rotating body 56 for the purpose of increasing the moving stroke of the slider 14 by the auto eject mechanism 24 as will be described later. Yes.
[0051]
The upright portion 52 is formed to extend obliquely by a predetermined angle θ with respect to the C and D directions perpendicular to the sliding direction (A and B directions) of the slider 14.
Next, when the disk cartridge is inserted, the latch lever 44 is rotated clockwise by the disk cartridge insertion operation into the disk holder 12 as described above, and the insertion of the disk cartridge is completed and the latch of the slider 14 is released. Then, the slider 14 slides in the B direction. Therefore, as shown in FIG. 9, the upright portion 52 provided at the left end of the slider 14 approaches the eccentric pin 54 of the auto eject mechanism 24. In this state, the eccentric pin 54 is not in contact with the upright portion 52 and is separated via the gap A.
[0052]
Therefore, even when the disk cartridge is inserted into the disk holder 12, the rising portion 52 of the slider 14 does not collide with the eccentric pin 54.
Next, the operation in the case of ejecting the disk cartridge mounted at the mounting position together with the disk holder 12 will be described.
When the eject button 88 is pressed in a state where writing to or reading from the magnetic disk accommodated in the disk cartridge has been completed, as shown in FIG. 10, an auto-eject mechanism is activated by a control signal from a control circuit (not shown). The 24 motors 58 are rotationally driven, and the rotating body 56 having the eccentric pin 54 is rotationally driven in the clockwise direction. As a result, the eccentric pin 54 rotates to a position where it comes into contact with the upright portion 52 as the rotating body 56 rotates.
[0053]
The upright portion 52 is formed at an angle θ oblique direction with respect to the C and D directions perpendicular to the sliding direction (A and B directions). Therefore, the eccentric pin 54 presses the upright portion 52 with a force F in the left oblique direction orthogonal to the upright portion 52 with respect to the sliding direction (A, B direction) of the slider 14. As a result, a pressing force Fy in the B direction and a pressing force Fx in the C direction act on the rising portion 52. Therefore, the slider 14 slides in the eject direction by the pressing force Fy in the B direction because the pressing force Fx in the C direction acts so as to cancel the moment to rotate clockwise by the pressing force Fx. To do.
[0054]
In conjunction with the sliding movement of the slider 14 in the eject direction, the disc holder 12 rises from the recording medium loading position to the recording medium unloading position.
Further, when the rotating body 56 rotates clockwise, the slider 14 reaches a latch release position where the latch 14 is released from the latch lever 44 as shown in FIG. Therefore, the latch lever 44 is rotated counterclockwise by the spring force of the coil spring 48 and pushes the disk cartridge in the disk holder 12 in the ejection direction (A direction).
[0055]
Further, in this latch release state, the eccentric pin 54 presses the upright portion 52 while moving in the B direction and the D direction. In this ejecting operation state, the eccentric pin 54 presses the upright portion 52 obliquely to the left with respect to the sliding direction (A, B direction) of the slider 14. As a result, a pressing force Fy in the B direction and a pressing force Fx in the C direction act on the rising portion 52. Therefore, since the pressing force Fx in the C direction acts so as to cancel the moment to rotate clockwise by the pressing force Fx, the slider 14 slides in the ejecting direction by the pressing force Fy in the B direction. To do.
[0056]
The upright portion 52 is formed so as to extend obliquely at an angle θ with respect to the C and D directions orthogonal to the sliding directions (A and B directions). However, the eccentric pin 54 rotates clockwise and rotates in the D direction. Since the pressing force Fx is small, the force to turn the slider 14 counterclockwise gradually decreases. However, the slider 14 is pressed in the B direction and slid in the eject direction while the force to rotate in the clockwise direction is kept small.
[0057]
Further, when the rotating body 56 rotates clockwise, as shown in FIG. 12, it slides in the B direction from the latch release position. This sliding distance B is an overstroke from the latch release position, and the slider 14 is hooked by the latching portion 44b of the latch lever 44 and the raised portion 14g is latched to return to the state before the disk cartridge is inserted.
At this time, the pressing force F of the eccentric pin 54 against the upright portion 52 acts in a substantially B direction, but is separated from the upright portion 52 as the eccentric pin 54 rotates clockwise. Thereafter, the eccentric pin 54 further rotates clockwise and returns to the standby position shown in FIG.
[0058]
Since the auto eject mechanism 24 is configured to be operated by the eccentric pin 54 of the rotating body 56, the standby (stop) position and the moving direction of the auto eject mechanism 24 can be made one, and thereby the auto eject mechanism. The control of 24 could be made easy.
Next, a control device that performs drive control of the auto-eject mechanism 24 configured as described above will be described with reference to FIGS. 13 to 18. The control device includes an MPU 102 (microprocessor unit), a motor driver 104, and an EEPROM 106 (nonvolatile memory).
[0059]
The MPU 102 is connected to the detection switch 100, the motor driver 104, and the EEPROM 106, and the discharge process completion signal output from the detection switch 100 and the drive start information (discharge process completion signal and drive start information stored in the EEPROM 106 are described). The motor driver 104 is controlled based on (to be described later). As a result, the motor driver 104 drives and controls the motor 58 based on the control signal supplied from the MPU 102, so that the auto-eject mechanism 24 is driven and controlled by the MPU 102.
[0060]
In the present embodiment, the EEPROM 106 is used as the memory when the power supply to the magnetic disk device is stopped, that is, when the electronic device (such as a personal computer) provided with the magnetic disk device is turned off. Even so, it is for holding the stored contents. In general, the EEPROM 106 is provided in an intelligent magnetic disk device, and by using this, an increase in cost can be suppressed.
[0061]
Subsequently, the relationship between the above-described states (disk cartridge insertion state, ejection completed state, disk cartridge non-insertion state) of the auto-eject mechanism 24 and a signal (discharge process completion signal) output from the detection switch 100. This will be described mainly with reference to FIGS. In the rotator 56 shown in FIGS. 15 to 17, the switch OFF area 56A is white, and the switch ON area 56B is textured.
[0062]
In the disk cartridge insertion state shown in FIGS. 13 and 15, the slider 14 is moved in the direction of the arrow A, and the upright portion 52 and the eccentric pin 54 are in a state of facing each other with a slight separation distance. Hereinafter, the rotation angle (θ) of the rotating body 56 when the disk cartridge is inserted is assumed to be θ = 0. The rotator 56 is driven by the motor 58 from this state and rotates in the direction of the arrow (clockwise) in the figure.
[0063]
In this disk cartridge insertion state, as shown in FIGS. 13 and 15, the detection switch 100 faces the rotating body 56 switch OFF region 56A. Therefore, the detection switch 100 is OFF as shown in FIG.
Further, when the rotating body 56 rotates 180 ° clockwise from the disk cartridge insertion state, the ejection shown in FIG. 16 is completed (hereinafter referred to as ejection completion state). As described above, while the rotating body 56 rotates 180 ° in the clockwise direction, the eccentric pin 54 provided on the rotating body 56 moves and urges the upright portion 52 in the direction of arrow B in the figure. Along with this, the slider 14 also moves in the direction of arrow B in the figure, so that the above-described ejection operation is performed.
[0064]
In this ejection completion state, as shown in FIG. 16, the detection switch 100 faces the rotating body 56 switch ON region 56B. Therefore, the detection switch 100 is turned on as shown in FIG. Further, in this ejection completed state, the slider 14 is latched by the latch mechanism 22 so that the movement in the arrow A direction in the figure is restricted.
[0065]
Further, when the rotating body 56 is rotated 180 ° clockwise from the ejection completion state, the disk cartridge is not inserted as shown in FIG. As shown in the figure, in this ejection completion state, the detection switch 100 again faces the rotating body 56 switch OFF region 56A, and thus the detection switch 100 is switched from ON to OFF as shown in FIG.
[0066]
That is, by detecting that the signal output from the detection switch 100 is switched from ON to OFF, it is possible to detect that the ejection processing by the auto-ejection mechanism 24 has been completed. In the following description, a signal that is output from the detection switch 100 and switches from ON to OFF is referred to as a discharge process completion signal.
[0067]
Subsequently, the control operation of the auto-eject mechanism 24 performed by the MPU 102 will be described with reference to FIG. Note that the processing shown in the figure starts when the magnetic disk device on which the auto-eject mechanism 24 is mounted is started and the MPU 102 is turned on. Normally, the magnetic disk device is not provided with a power switch that is turned ON / OFF by an operator, and the magnetic disk device is turned on when an electronic device (such as a personal computer) provided with the magnetic disk device is turned on. The power is also turned on.
[0068]
When the control operation shown in FIG. 18 is started, first in step 10 (step is abbreviated as S in the figure), the MPU 102 determines whether the memory bit m stored in the EEPROM 106 is set to m = 1. Judging.
The memory bit m is set to “1” when a driving signal for driving the motor 58 is transmitted from the MPU 102 to the motor driver 104, and a driving stop signal for stopping the motor 58 is transmitted from the MPU 102 to the motor driver 104. Sometimes it is set to “0”. Therefore, the memory bit m functions as drive start information indicating that the motor 58 has started driving.
[0069]
If a negative determination is made in step 10, that is, if it is determined that the memory bit m is m = 0 and the motor 58 is stopped, the process proceeds to step 12, and the MPU 102 presses the eject button 88. Determine whether or not. The process of step 12 is performed by the eject button 88. Until pressed To be implemented.
Note that the state of the magnetic disk device in which the eject button 88 is pressed is a disk cartridge insertion state in which the disk cartridge is inserted into the magnetic disk (that is, the state shown in FIG. 15). Further, the rotation angle of the rotating body 56 in this state is 0 ° (see FIG. 14).
[0070]
If it is determined in step 12 that the eject button 88 has been pressed, the process proceeds to step 14 where the MPU 102 transmits a drive signal for driving the motor 58 to the motor driver 104, and the motor driver 104 starts the motor 58 accordingly. . As a result, the auto-eject mechanism 24 starts the above-described eject operation. Further, the MPU 102 sets the memory bit m in the EEPROM 106 to m = 1 together with the transmission of the driving signal (step 16).
[0071]
When the motor 58 starts to be driven by the processing in step 14, the rotating body 56 rotates clockwise from the state shown in FIG. Then, as the rotating body 56 rotates 180 °, the auto-eject mechanism 24 enters the ejection completion state shown in FIG. 16, and the disk cartridge is ejected from the magnetic disk device.
Further, when the rotator 56 is rotated by 180 °, the detection switch 100 faces the switch ON region 56B of the rotator 56 as shown in FIG. Therefore, as shown in FIG. 14, the detection switch 100 switches from the OFF state to the ON state.
[0072]
Then, the motor 58 further rotates and rotates 360 ° from the state shown in FIG. 15 (disk cartridge insertion state), so that the auto-eject mechanism 24 enters the disk cartridge non-insertion state. Further, when the rotating body 56 is rotated 360 °, the detection switch 100 is connected to the rotating body 56 as shown in FIG. Switch OFF area It will be in the state facing 56A. Therefore, as shown in FIG. 14, the detection switch 100 is switched from the ON state to the OFF state.
[0073]
The MPU 102 determines whether or not the detection switch 100 is switched from the ON state to the OFF state in Step 18, and the process of Step 14 is continued until the detection switch 100 is switched from the ON state to the OFF state. Keep driving.
On the other hand, if it is determined in step 18 that the detection switch 100 has been switched from the ON state to the OFF state, the process proceeds to step 20, and the MPU 102 transmits a drive stop signal for stopping the motor 58 to the motor driver 104. Along with this, the motor driver 104 stops the motor 58, and thus the auto-eject mechanism 24 is also stopped.
[0074]
Subsequently, in step 22, the MPU 102 sets the memory bit m in the EEPROM 106 to m = 0 together with the transmission of the drive stop signal described above. Therefore, when the auto-eject mechanism 24 properly finishes the ejection process, the memory bit m is m = 0.
Here, it returns to the process of step 10 again and continues description. As described above, when the auto-eject mechanism 24 properly finishes the ejection process, the memory bit m is m = 0. However, at step 12, the eject button 88 is When operated After the determination, if the power of the electronic device on which the magnetic disk device is mounted is turned off until the motor 58 is stopped in step 20 (that is, during the ejection), the power supply to the motor 58 is also performed. Accordingly, the auto-eject mechanism 24 is also stopped (hereinafter, such a stop state is referred to as an abnormal stop state).
[0075]
When the auto eject mechanism 24 is in the abnormally stopped state, the disk cartridge is in the auto eject mechanism 24. Therefore, as described above, there is a possibility that the auto-eject mechanism 24 and the magnetic disk may be damaged when the spin-up is performed in the abnormally stopped state.
If the auto-eject mechanism 24 is abnormally stopped in this way, the memory bit m in the EEPROM 106, which is a nonvolatile memory that maintains the memory state even when the power is turned off, remains set at m = 1. It is in the state of. Therefore, when the memory bit m in the EEPROM 106 is determined as m = 1 in the first step 10 after the power is turned on to the magnetic disk device, the auto-eject mechanism 24 is not normally stopped. It can be determined that the state is abnormally stopped.
[0076]
Therefore, in this embodiment, if it is determined in step 10 that the memory bit m in the EEPROM 106 is m = 1, the process proceeds to step 14 and the ejects after step 14 are performed regardless of the operation of the eject button 88. It was set as the structure which enforces a process compulsorily.
As a result, when the previous power-off is not performed properly and the auto-eject mechanism 24 is in an abnormally stopped state, a process for forcibly ejecting the disk cartridge is performed, so the auto-eject mechanism 24 and the magnetic disk Thus, it is possible to reliably prevent the occurrence of damage.
[0077]
In addition, if the previous power-off was properly performed, the disk cartridge is not forcibly ejected, so the recording / reproducing process can be started with the disk cartridge mounted in the magnetic disk device. Therefore, it is possible to respond to the user's request.
Further, in the configuration of the present embodiment, the detection switch 100 only needs to detect that the disk cartridge ejection process by the auto-eject mechanism 24 has been completed (that is, only to detect that the rotating body 56 has rotated 360 °). Therefore, one sensor is sufficient. Therefore, the cost increase of the magnetic disk device can be suppressed as compared with the conventional configuration in which two sensors are provided.
[0078]
In the above-described embodiments, the magnetic disk device has been described as an example. However, the present invention is not limited to this, and for example, a card-shaped recording medium such as an optical disk device, a magneto-optical disk device, or a memory card. Of course, the present invention can also be applied to a recording / reproducing apparatus or the like to which is attached.
In the above embodiment, the configuration in which the slider slides above the disk holder has been described as an example. However, the present invention is not limited to this, and the present invention is also applied to a configuration in which the slider slides below the disk holder. can do.
[0079]
【The invention's effect】
As described above, according to the present invention, the detection means need only detect that the discharge mechanism has completed the discharge processing of the storage medium. Therefore, an increase in cost of the recording medium mounting device can be suppressed.
Also, the process of ejecting the recording medium is performed only when the previous power switch was turned off in the middle of the ejection of the recording medium, and when the previous power switch was properly turned off, Since the discharging process can be configured not to be performed, the recording / reproducing process can be started with the recording medium mounted on the recording medium mounting apparatus when the power switch is properly turned off. And can respond to user requests.
[Brief description of the drawings]
FIG. 1 is a plan view showing a state before a disk cartridge is inserted in a disk apparatus to which an embodiment of a recording medium mounting apparatus according to the present invention is applied.
FIG. 2 is a plan view showing a disc cartridge mounted state.
FIG. 3 is an enlarged view showing a main part of the present invention.
FIG. 4 is an exploded perspective view showing a schematic configuration of a recording medium mounting apparatus.
FIG. 5 is an exploded perspective view showing a schematic configuration of a head carriage mechanism.
FIG. 6 is a front view of the magnetic disk device.
FIG. 7 is a side view showing a disc insertion / ejection state in which a disc holder and a slider are combined.
FIG. 8 is an enlarged plan view showing the operating state of the auto-eject mechanism before inserting the disk cartridge.
FIG. 9 is an enlarged plan view showing an operation state when a disc cartridge is inserted.
FIG. 10 is an enlarged plan view showing an operating state during ejection.
FIG. 11 is an enlarged plan view showing an operation state at a latch release setting position.
FIG. 12 is an enlarged plan view showing a state in which the slider has moved to the innermost position.
FIG. 13 is a system configuration diagram of a control device that controls the recording medium mounting device;
FIG. 14 is a timing chart for explaining a control operation of the control device;
FIG. 15 is a diagram showing a positional relationship between a detection switch and a rotating body in an operation state when a disc cartridge is inserted.
FIG. 16 is a diagram illustrating a positional relationship between the detection switch and the rotating body in a state where the slider is moved to the innermost position.
FIG. 17 is a diagram showing the positional relationship between the detection switch and the rotating body in the operating state of the auto-eject mechanism before inserting the disk cartridge.
FIG. 18 is a flowchart showing a control operation of the control device.
FIG. 19 is a plan view showing an example of a recording medium mounting apparatus that has been conventionally considered.
[Explanation of symbols]
10 Magnetic disk unit
11 Recording medium mounting device
12 Disc holder
14 Slider
16 frames
18 Head carriage
20 Head carriage drive
22 Latch mechanism
24 Autoject mechanism
25 Head carriage lock mechanism
26 Damper mechanism
28 Misinsertion prevention mechanism
30 damper plate
32 Damper spring
34,38 Flexible wiring board
36, 40 connectors
44 Latch lever
46 Torsion spring
52 Upright
54 Eccentric pin
56 Rotating body
56A Switch OFF area
56B Switch ON area
58 motor
60 head arm
61 Lower magnetic head
62 Upper magnetic head
64 voice coil motor
78 coils
80 Center yoke
82 Side York
84 Magnet
86 Disc insertion slot
87 Front bezel
88 Eject button
100 detection switch
102 MPU
104 Motor driver
106 EEPROM

Claims (1)

A recording medium discharge switch operated when the recording medium is discharged;
A drive unit for driving a discharge mechanism for discharging the recording medium;
Detecting means for detecting that the discharge mechanism has completed the discharge processing of the storage medium, and outputting a discharge processing completion signal;
Drive start information indicating that the drive unit has started driving is stored at the start of driving of the drive unit, and storage means configured to erase the drive start information by outputting the discharge process completion signal;
Control means for starting the drive unit and discharging the recording medium when the storage means stores the drive start information when the recording medium discharge switch is operated and when the power is turned on; ,
A recording medium mounting apparatus comprising:

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